Synovus Financial (SNV) 10-K 24 Feb 23 2022 FY Annual report Financial data

Cover Page

Cover Page - USD ($)	12 Months Ended
	Dec. 31, 2022	Feb. 21, 2023	Jun. 30, 2022
Entity Information [Line Items]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2022
Current Fiscal Year End Date	--12-31
Entity File Number	1-10312
Entity Registrant Name	SYNOVUS FINANCIAL CORP
Entity Incorporation, State or Country Code	GA
Entity Tax Identification Number	58-1134883
Entity Address, Address Line One	1111 Bay Avenue
Entity Address, Address Line Two	Suite 500,
Entity Address, City or Town	Columbus,
Entity Address, State or Province	GA
Entity Address, Postal Zip Code	31901
City Area Code	706
Local Phone Number	641-6500
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Public Float			$ 4,949,957,366
Entity Common Stock, Shares Outstanding		146,045,164
Documents Incorporated by Reference	Incorporated Documents Form 10-K Reference Locations Portions of the Proxy Statement for the Annual Meeting of Shareholders to be held April 26, 2023 (“Proxy Statement”) Part III
Entity Central Index Key	0000018349
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	FY
Amendment Flag	false
Document Transition Report	false
Common Stock, $1.00 Par Value
Entity Information [Line Items]
Title of 12(b) Security	Common Stock, $1.00 Par Value
Trading Symbol	SNV
Security Exchange Name	NYSE
Fixed-to-Floating Rate Non-Cumulative Perpetual Preferred Stock, Series D
Entity Information [Line Items]
Title of 12(b) Security	Fixed-to-Floating Rate Non-Cumulative Perpetual Preferred Stock, Series D
Trading Symbol	SNV - PrD
Security Exchange Name	NYSE
Fixed-Rate Reset Non-Cumulative Perpetual Preferred Stock, Series E
Entity Information [Line Items]
Title of 12(b) Security	Fixed-Rate Reset Non-Cumulative Perpetual Preferred Stock, Series E
Trading Symbol	SNV - PrE
Security Exchange Name	NYSE

Audit Information

Audit Information	12 Months Ended
	Dec. 31, 2022
Audit Information [Abstract]
Auditor Name	KPMG LLP
Auditor Location	Atlanta, Georgia
Auditor Firm ID	185

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
ASSETS
Cash and due from banks	$ 624,097	$ 432,925
Interest-bearing funds with Federal Reserve Bank	1,280,684	2,479,006
Interest earning deposits with banks	34,632	25,535
Federal funds sold and securities purchased under resale agreements	38,367	72,387
Total cash, cash equivalents, and restricted cash	1,977,780	3,009,853
Investment securities available for sale, at fair value	9,678,103	10,918,329
Loans held for sale (includes $51,136 and $108,198, measured at fair value, respectively)	391,502	750,642
Loans, net of deferred fees and costs	43,716,353	39,311,958
Allowance for loan losses	(443,424)	(427,597)
Loans, net	43,272,929	38,884,361
Cash surrender value of bank-owned life insurance	1,089,280	1,068,616
Premises, equipment and software, net	370,632	407,241
Goodwill	452,390	452,390
Other intangible assets, net	27,124	35,596
Other assets	2,471,638	1,790,198
Total assets	59,731,378	57,317,226
Deposits:
Non-interest-bearing deposits	15,639,899	16,392,653
Interest-bearing deposits	33,231,660	33,034,623
Total deposits	48,871,559	49,427,276
Federal funds purchased and securities sold under repurchase agreements	146,588	264,133
Other short-term borrowings	603,384	200
Long-term debt	4,109,597	1,204,229
Other liabilities	1,524,449	1,124,588
Total liabilities	55,255,577	52,020,426
Shareholders’ Equity
Preferred stock - no par value; authorized 100,000,000 shares; issued 22,000,000	537,145	537,145
Common stock - $1.00 par value; authorized 342,857,143 shares; issued 170,141,492 and 169,383,758, respectively; outstanding 145,486,634 and 145,010,086, respectively	170,141	169,384
Additional paid-in capital	3,920,346	3,894,109
Treasury stock, at cost; 24,654,858 and 24,373,672 shares, respectively	(944,484)	(931,497)
Accumulated other comprehensive income (loss), net	(1,442,117)	(82,321)
Retained earnings	2,234,770	1,709,980
Total shareholders’ equity	4,475,801	5,296,800
Total liabilities and shareholders' equity	$ 59,731,378	$ 57,317,226

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Statement of Financial Position [Abstract]
Loans held-for-sale, fair value disclosure	$ 51,136	$ 108,198
Preferred stock, par value (in dollars per share)	$ 0	$ 0
Preferred stock, shares authorized (in shares)	100,000,000	100,000,000
Preferred stock, shares issued (in shares)	22,000,000	22,000,000
Common stock, par value (in dollars per share)	$ 1	$ 1
Common stock, shares authorized (in shares)	342,857,143	342,857,143
Common stock, shares issued (in shares)	170,141,492	169,383,758
Common stock, shares outstanding (in shares)	145,486,634	145,010,086
Treasury stock, shares at cost (in shares)	24,654,858	24,373,672

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Statement [Abstract]
Loans, including fees	$ 1,806,060	$ 1,482,567	$ 1,600,462
Investment securities available for sale	209,951	140,077	178,575
Loans held for sale	34,037	23,809	15,078
Federal Reserve Bank balances	18,117	3,777	2,839
Other earning assets	7,622	3,113	7,541
Total interest income	2,075,787	1,653,343	1,804,495
Interest expense:
Deposits	187,232	74,919	217,777
Long-term debt	79,402	45,349	66,053
Federal funds purchased, securities sold under repurchase agreements, and other borrowings	12,253	128	7,917
Total interest expense	278,887	120,396	291,747
Net interest income	1,796,900	1,532,947	1,512,748
Provision for (reversal of) credit losses	84,553	(106,251)	355,022
Net interest income after provision for credit losses	1,712,347	1,639,198	1,157,726
Non-interest revenue:
Service charges on deposit accounts	93,067	86,310	73,132
Fiduciary and asset management fees	78,414	77,147	63,251
Card fees	61,833	51,399	42,702
Brokerage revenue	67,034	56,439	44,781
Mortgage banking income	17,476	54,371	91,413
Capital markets income	26,702	26,118	27,336
Income from bank-owned life insurance	29,720	38,019	31,297
Investment securities gains (losses), net	0	(799)	78,931
Other non-interest revenue	35,090	61,062	53,670
Total non-interest revenue	409,336	450,066	506,513
Non-interest expense:
Salaries and other personnel expense	681,710	649,426	618,214
Net occupancy, equipment, and software expense	174,730	169,222	169,658
Third-party processing and other services	88,617	86,688	87,992
Professional fees	37,189	32,785	56,899
FDIC insurance and other regulatory fees	29,083	22,355	25,210
Goodwill impairment	0	0	44,877
Restructuring charges	(9,690)	7,223	26,991
Other operating expense	155,867	132,205	149,733
Non-interest expense	1,157,506	1,099,904	1,179,574
Income before income taxes	964,177	989,360	484,665
Income tax expense	206,275	228,893	110,970
Net income	757,902	760,467	373,695
Less: Preferred stock dividends	33,163	33,163	33,163
Net income available to common shareholders	$ 724,739	$ 727,304	$ 340,532
Net income per common share, basic (in dollars per share)	$ 4.99	$ 4.95	$ 2.31
Net income per common share, diluted (in dollars per share)	$ 4.95	$ 4.90	$ 2.30
Weighted average common shares outstanding, basic (in shares)	145,364	147,041	147,415
Weighted average common shares outstanding, diluted (in shares)	146,481	148,495	148,210

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Statement of Comprehensive Income [Abstract]
Income before income taxes and equity in undistributed income of subsidiaries	$ 964,177	$ 989,360	$ 484,665
Net income, income tax	(206,275)	(228,893)	(110,970)
Net income	757,902	760,467	373,695
Before-tax Amount
Net unrealized gains (losses) arising during the period	(1,522,047)	(234,550)	108,626
Reclassification adjustment for realized (gains) losses included in net income	0	799	(78,931)
Net change	(1,522,047)	(233,751)	29,695
Income Tax
Net unrealized gains (losses) arising during the period	369,764	60,304	(28,135)
Reclassification adjustment for realized (gains) losses included in net income	0	(202)	20,443
Net change	369,764	60,102	(7,692)
Net of Tax Amount
Net unrealized gains (losses) arising during the period	(1,152,283)	(174,246)	80,491
Reclassification adjustment for realized (gains) losses included in net income	0	597	(58,488)
Net change	(1,152,283)	(173,649)	22,003
Before-tax Amount
Net unrealized gains (losses) arising during the period	(298,289)	(77,948)	99,193
Reclassification adjustment for realized (gains) losses included in net income	24,057	(12,862)	(2,765)
Net change	(274,232)	(90,810)	96,428
Income Tax
Net unrealized gains (losses) arising during the period	72,574	20,243	(25,691)
Reclassification adjustment for realized (gains) losses included in net income	(5,855)	3,260	716
Net change	66,719	23,503	(24,975)
Net of Tax Amount
Net unrealized gains (losses) arising during the period	(225,715)	(57,705)	73,502
Reclassification adjustment for realized (gains) losses included in net income	18,202	(9,602)	(2,049)
Net change	(207,513)	(67,307)	71,453
Before-tax Amount
Actuarial losses arising during the period	0	0	0
Reclassification adjustment for realized gains included in net income	0	0	(618)
Net change	0	0	(618)
Income Tax
Actuarial losses arising during the period	0	0	0
Reclassification adjustment for realized gains included in net income	0	0	156
Net change	0	0	156
Net of Tax Amount
Actuarial losses arising during the period	0	0	0
Reclassification adjustment for realized gains included in net income	0	0	(462)
Net change	0	0	(462)
Total other comprehensive income (loss)	(1,796,279)	(324,561)	125,505
Other comprehensive income (loss), income tax	436,483	83,605	(32,511)
Other comprehensive income (loss)	(1,359,796)	(240,956)	92,994
Comprehensive income (loss)	$ (601,894)	$ 519,511	$ 466,689

Consolidated Statements of Chan

Consolidated Statements of Changes in Shareholders' Equity - USD ($) $ in Thousands		Total	Cumulative Effect, Period of Adoption, Adjustment	Preferred Stock	Common Stock	Additional Paid-in Capital	Treasury Stock	AOCI	Retained Earnings	Retained Earnings Cumulative Effect, Period of Adoption, Adjustment
Beginning balance at Dec. 31, 2019		$ 4,941,690	$ (35,721)	$ 537,145	$ 166,801	$ 3,819,336	$ (715,560)	$ 65,641	$ 1,068,327	$ (35,721)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		373,695							373,695
Other comprehensive income (loss), net of income taxes		92,994						92,994
Cash dividends declared on common stock		(194,658)							(194,658)
Cash dividends declared on preferred stock	[1]	(33,163)							(33,163)
Repurchases of common stock including costs to repurchase		(16,246)			(16,200)		(16,246)
Issuance of common stock for earnout payment		8,695			379	8,316
Restricted share unit vesting and taxes paid related to net share settlement		(7,575)			389	(7,503)			(461)
Stock options/warrants exercised, net		12,982			564	12,418
Share-based compensation expense		18,641				18,641
Ending balance at Dec. 31, 2020		5,161,334		537,145	168,133	3,851,208	(731,806)	158,635	1,178,019
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		760,467							760,467
Other comprehensive income (loss), net of income taxes		(240,956)						(240,956)
Cash dividends declared on common stock		(193,695)							(193,695)
Cash dividends declared on preferred stock	[1]	(33,163)							(33,163)
Repurchases of common stock including costs to repurchase		(199,932)			(199,900)		(199,932)
Issuance of common stock for earnout payment		5,080				4,955	125
Restricted share unit vesting and taxes paid related to net share settlement		(7,544)			355	(6,254)			(1,645)
Stock options/warrants exercised, net		19,110			896	18,214
Warrants exercised with net settlement and common stock reissued		0				(113)	116		(3)
Share-based compensation expense		26,099				26,099
Ending balance at Dec. 31, 2021		5,296,800		537,145	169,384	3,894,109	(931,497)	(82,321)	1,709,980
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		757,902							757,902
Other comprehensive income (loss), net of income taxes		(1,359,796)						(1,359,796)
Cash dividends declared on common stock		(197,762)							(197,762)
Cash dividends declared on preferred stock	[1]	(33,163)							(33,163)
Repurchases of common stock including costs to repurchase		(12,987)			(13,000)		(12,987)
Restricted share unit vesting and taxes paid related to net share settlement		(9,877)			399	(8,089)			(2,187)
Stock options/warrants exercised, net		7,054			358	6,696
Share-based compensation expense		27,630				27,630
Ending balance at Dec. 31, 2022		$ 4,475,801		$ 537,145	$ 170,141	$ 3,920,346	$ (944,484)	$ (1,442,117)	$ 2,234,770
[1]For the years ended December 31, 2022, 2021 and 2020, dividends per share were $1.58 and $1.47 for Series D and Series E Preferred Stock, respectively.

Consolidated Statements of Ch_2

Consolidated Statements of Changes in Shareholders' Equity (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Cash dividends declared on common stock (in dollars per share)	$ 1.36	$ 1.32	$ 1.32
Series D Preferred Stock
Dividends declared on preferred stock during the year but paid after year-end (in dollars per share)	1.58	1.58	1.58
Series E Preferred Stock
Dividends declared on preferred stock during the year but paid after year-end (in dollars per share)	$ 1.47	$ 1.47	$ 1.47

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Operating Activities
Net income	$ 757,902	$ 760,467	$ 373,695
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for (reversal of) credit losses	84,553	(106,251)	355,022
Depreciation, amortization, and accretion, net	69,172	113,552	69,625
Deferred income tax expense (benefit)	10,868	45,000	(86,192)
Originations of loans held for sale	(3,352,235)	(3,698,368)	(3,466,170)
Proceeds from sales of loans held for sale	3,709,022	3,749,502	2,936,398
Gain on sales of loans held for sale, net	(12,126)	(42,513)	(67,115)
(Increase) decrease in other assets	(187,205)	(34,293)	(375,150)
Increase (decrease) in other liabilities	82,957	(21,674)	281,866
Investment securities (gains) losses, net	0	799	(78,931)
Share-based compensation expense	27,904	27,795	18,641
Other	677	0	55,343
Net cash provided by operating activities	1,191,489	794,016	17,032
Investing Activities
Proceeds from maturities and principal collections of investment securities available for sale	1,973,990	3,051,158	2,291,536
Proceeds from sales of investment securities available for sale	0	565,400	2,649,686
Purchases of investment securities available for sale	(2,287,318)	(6,877,712)	(6,036,179)
Proceeds from sales of loans	69,784	111,168	1,426,954
Purchases of loans	(514,475)	(1,624,182)	(126,152)
Net (increase) decrease in loans	(3,987,133)	373,964	(2,461,302)
Net (purchases) redemptions of Federal Reserve Bank stock	15,151	(1,220)	(658)
Net (purchases) redemptions of Federal Home Loan Bank stock	(163,531)	(1,200)	129,710
Net (purchases) proceeds from settlement of bank-owned life insurance policies	9,271	19,045	(242,300)
Net increase in premises, equipment and software	(30,105)	(25,954)	(30,102)
Other	58,884	25,367	45,834
Net cash used in investing activities	(4,855,482)	(4,384,166)	(2,352,973)
Financing Activities
Net increase (decrease) in deposits	(531,490)	2,735,705	8,284,519
Net increase (decrease) in federal funds purchased and securities sold under repurchase agreements	(117,545)	36,211	62,232
Net increase (decrease) in other short-term borrowings	603,184	(7,520)	(1,745,843)
Repayments and redemption of long-term debt	(700,000)	0	(2,408,939)
Proceeds from long-term debt, net	3,622,892	0	1,445,492
Dividends paid to common shareholders	(196,148)	(194,677)	(189,967)
Dividends paid to preferred shareholders	(33,163)	(33,163)	(33,163)
Issuances, net of taxes paid, under equity compensation plans	(2,823)	11,566	5,407
Repurchase of common stock	(12,987)	(199,932)	(16,246)
Other	0	(1,104)	(1,552)
Net cash provided by financing activities	2,631,920	2,347,086	5,401,940
Increase (decrease) in cash and cash equivalents including restricted cash	(1,032,073)	(1,243,064)	3,065,999
Cash, cash equivalents, and restricted cash at beginning of year	3,009,853	4,252,917	1,186,918
Cash, cash equivalents, and restricted cash at end of year	1,977,780	3,009,853	4,252,917
Supplemental Disclosures:
Income taxes paid	175,680	204,214	110,828
Interest paid	242,040	132,923	319,282
Non-cash Activities:
Loans foreclosed and transferred to other real estate	0	12,408	2,163
Loans transferred to (from) loans held for sale at fair value	(14,480)	(859)	49,821
Premises and equipment transferred to other assets held for sale	$ 24,163	$ 33,379	$ 7,014

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2022
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Note 1 - Summary of Significant Accounting Policies Business Operations Synovus provides commercial and consumer banking in addition to a full suite of specialized products and services including private banking, treasury management, wealth management, mortgage services, premium finance, asset-based lending, structured lending, capital markets, and international banking to its clients through its wholly-owned subsidiary bank, Synovus Bank, primarily in offices located throughout Alabama, Florida, Georgia, South Carolina and Tennessee. In addition to our banking operations, we also provide various other financial planning and investment advisory services to our clients through direct and indirect wholly-owned non-bank subsidiaries, including: Synovus Securities, headquartered in Columbus, Georgia, which specializes in professional portfolio management for fixed-income securities, investment banking, the execution of securities transactions as a broker/dealer, and the provision of individual investment advice on equity and other securities; and Synovus Trust, headquartered in Columbus, Georgia, which provides trust, asset management, and financial planning services. Principles of Consolidation and Basis of Presentation The consolidated financial statements of Synovus include the accounts of the Parent Company and its consolidated subsidiaries. All intercompany balances and transactions have been eliminated in consolidation. The accounting and financial reporting policies of Synovus are in accordance with GAAP and conform to the accounting and reporting guidelines prescribed by bank regulatory authorities. Prior period consolidated financial statements are reclassified whenever necessary to conform to the current period presentation. No reclassifications of prior period balances were material to the consolidated financial statements unless specifically disclosed. The Company’s consolidated financial statements include all entities in which the Company has a controlling financial interest. A VIE for which Synovus or a subsidiary has been determined to be the primary beneficiary is also consolidated. The determination of whether a controlling financial interest exists is based on whether a single party has both the power to direct the activities of the VIE that most significantly impact the VIE's economic performance and the obligation to absorb the losses of the VIE or the right to receive benefits from the VIE that could potentially be significant to the VIE. Investments in VIEs where Synovus is not the primary beneficiary are accounted for using either the proportional amortization method or equity method of accounting. The Company uses the hypothetical liquidation at book value (HLBV) method for equity investments when the liquidation rights and priorities as defined by an equity investment agreement differ from what is reflected by the underlying percentage ownership interests. Investments in VIEs are included in other assets on the consolidated balance sheets, and the Company's proportionate share of income or loss is included as either a component of income tax expense (proportional amortization method) or other non-interest revenue (equity method). The maximum potential exposure to losses relative to investments in VIEs is generally limited to the sum of the outstanding balance, future funding commitments and any related loans to the entity. The assessment of whether or not the Company has a controlling interest (i.e., the primary beneficiary) in a VIE is performed on an on-going basis. Refer to "Part II - Item 8. Financial Statements and Supplementary Data - Note 14 - Commitments and Contingencies" of this Report for additional details regarding Synovus' involvement with VIEs. Use of Estimates In preparing the consolidated financial statements in accordance with GAAP, management is required to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities as of the date of the respective consolidated balance sheets and the reported amounts of revenue and expense for the periods presented. Actual results could differ significantly from those estimates. Material estimates that are particularly susceptible to significant change relate to the determination of the ACL, estimates of fair value, income taxes, and contingent liabilities. Business Combinations Assets and liabilities acquired in business combinations are recorded at their acquisition date fair values, except as provided for by the applicable accounting guidance, with any excess recorded as goodwill. The results of operations of the acquired company are combined with Synovus’ results from the acquisition date forward. In accordance with ASC Topic 805, Business Combinations , the Company generally records provisional amounts at the time of acquisition based on the information available to the Company. The provisional estimates of fair values may be adjusted for a period of up to one year (“measurement period”) from the date of acquisition if new information is obtained about facts and circumstances that existed as of the acquisition date that, if known, would have affected the measurement of the amounts recognized as of that date. Subsequent to the acquisition date, adjustments recorded during the measurement period are recognized in the current reporting period. Acquisition costs are expensed when incurred. Cash, Cash Equivalents, and Restricted Cash Cash and cash equivalents consist of cash and due from banks as well as interest-bearing funds with Federal Reserve Bank, interest earning deposits with banks, and federal funds sold and securities purchased under resale agreements, which are inclusive of any restricted cash and restricted cash equivalents . On March 15, 2020, the Federal Reserve Board announced that, effective March 26, 2020, it would reduce reserve requirement ratios to zero percent for all depository institutions. Cash and cash equivalents included restricted cash of $66.8 million at December 31, 2022 and $65.1 million at December 31, 2021, which were pledged to collateralize certain derivative instruments and letters of credit. Investment Securities Available for Sale Investment securities available for sale are carried at fair value with unrealized gains and losses, net of the related tax effect, excluded from earnings and reported as a separate component of shareholders' equity within accumulated other comprehensive income (loss) until realized. For investment securities available for sale in an unrealized loss position, if Synovus has an intention to sell the security, or it is more likely than not that the security will be required to be sold prior to recovery, the security is written down to its fair value. The write down is charged against the ACL, if one was previously recorded, with any additional impairment recorded in earnings. If the aforementioned criteria are not met, Synovus performs a quarterly assessment of its available for sale debt securities to determine if the decline in fair value of a security below its amortized cost is related to credit losses or other factors. Management cons iders the extent to which fair value is less than amortized cost, the issuer of the security, any changes to the rating of the security by a rating agency, and adverse conditions specifically related to the security, among other factors. In assessing whether credit-related impairment exists, the present value of cash flows expected to be collected from the security is compared to the security's amortized cos t. If the present value of cash flows expected to be collected is less than the security's amortized cost basis, the difference is attributable to credit losses. For such differences, Synovus records an ACL with an offset to provision for credit losses. Synovus limits the ACL recorded to the amount the security's fair value is less than the amortized cost basis. Impairment losses related to other factors are recognized in other comprehensive income (loss). Interest income on securities available for sale is recorded on the accrual basis. Premiums and discounts are amortized or accreted over the life of the related security as an adjustment to yield using the effective interest method unless the premium is related to callable debt securities. For these securities, the amortization period is shortened to the earliest call date. Realized gains and losses for securities are included in investment securities gains (losses), net, on the consolidated statements of income and are derived using the specific identification method, on a trade date basis. Mortgage Loans Held for Sale and Mortgage Banking Income Mortgage Loans Held for Sale Mortgage loans held for sale are initially measured at fair value under the fair value option election with subsequent changes in fair value recognized in mortgage banking income on the consolidated statements of income. Mortgage Banking Income Mortgage banking income consists primarily of origination and ancillary fees on mortgage loans originated for sale, and gains and losses from the sale of those loans. Mortgage loans are sold servicing released, without recourse or continuing involvement, and meet ASC Topic 860, Transfers and Servicing criteria for sale accounting. Other Loans Held for Sale Other loans held for sale are carried at the lower of cost or estimated fair value. Loans Held for Investment and Interest Income Loans the Company has the intent and ability to hold for the foreseeable future are reported at principal amounts outstanding less amounts charged off, net of deferred fees and costs, and purchase premium/discount. Interest income is recognized on a level yield basis. Non-accrual Loans Loans on which the accrual of interest has been discontinued are designated as non-accrual loans. Accrual of interest is discontinued on loans when reasonable doubt exists as to the full collection of interest or principal, or when loans become contractually past due for 90 days or more as to either interest or principal, in accordance with the terms of the loan agreement, unless they are both well-secured and in the process of collection. When a loan is placed on non-accrual status, previously accrued and uncollected interest is reversed as an adjustment to interest income on loans. Interest payments received on non-accrual loans are generally recorded as a reduction of principal. As payments are received on non-accruing loans, interest income can be recognized on a cash basis; however, there must be an expectation of full repayment of the remaining recorded principal balance. The remaining portion of this payment is recorded as a reduction to principal. Loans are generally returned to accruing status when they are brought fully current with respect to interest and principal and when, in the judgment of management, the loans are estimated to be fully collectible as to both principal and interest, and the borrower has sustained repayment performance under the terms of the loan agreement for a reasonable period of time (generally six months). Troubled Debt Restructurings When borrowers are experiencing financial difficulties, Synovus may, in order to assist the borrowers in repaying the principal and interest owed to Synovus, make certain modifications to the borrower's loan. All loan modifications, renewals, and refinances are evaluated for TDR classification. The ALL on a TDR is measured using the same method as all other loans held for investment, except that the original interest rate, and not the rate specified with the restructuring, is used to discount the expected cash flows. Concessions provided by Synovus in a TDR are generally made in order to assist borrowers so that debt service is not interrupted and to mitigate the potential for loan losses. A number of factors are reviewed when a loan is renewed, refinanced, or modified, including cash flows, collateral values, guarantees, and loan structures. Concessions are primarily in the form of providing a below market interest rate given the borrower's credit risk to assist the borrower in managing cash flows, an extension of the maturity of the loan generally for less than one year, or a period of time generally less than one year with a reduction of required principal and/or interest payments (e.g., interest only for a period of time). Insignificant delays of principal and/or interest payments, or short-term deferrals, are generally not considered to be financial concessions. Further, it is generally Synovus' practice not to defer principal and/or interest for more than twelve months. Non-accruing TDRs may generally be returned to accrual status if there has been a period of performance, usually at least a six-month sustained period of repayment performance in accordance with the agreement. In the fiscal year subsequent to a loan's initial reporting as a TDR, a TDR for a borrower who is no longer experiencing financial difficulty (as evidenced by a period of performance), which yields a market rate of interest at the time of a renewal, and for which no principal was forgiven, is no longer considered a TDR. Concentrations of Credit Risk A substantial portion of the loan portfolio is secured by real estate in markets located throughout Alabama, Florida, Georgia, South Carolina, and Tennessee. Accordingly, the ultimate collectability of a substantial portion of the loan portfolio is susceptible to changes in market conditions in these areas. Loan Origination Fees and Costs Loan origination fees and direct loan origination costs are deferred and amortized to net interest income over the life of the related loan or over the commitment period as a yield adjustment. Allowance for Credit Losses (ACL) Synovus calculates its ACL utilizing an expected credit loss methodology (referred to as CECL). CECL requires management’s estimate of credit losses over the full remaining expected life of loans and other financial instruments and for Synovus, applies to loans, unfunded loan commitments, accrued interest receivable, and available for sale debt securities. Allowance for Loan Losses (ALL) The ALL on loans held for investment represents management's estimate of credit losses expected over the life of the loans included in Synovus' existing loans held for investment portfolio. Changes to the allowance are recorded through a provision for credit losses and reduced by loans charged-off, net of recoveries. Determining the appropriateness of the allowance is complex and requires judgment by management about the effect of matters that are inherently uncertain. Accrued but uncollected interest is recorded in other assets on the consolidated balance sheets. In general, the Company does not record an ACL for accrued interest receivables as allowable per ASC 326-20-30-5A as Synovus' non-accrual policies result in the timely write-off of accrued but uncollected interest. Credit loss measurement Synovus' loan loss estimation process includes procedures to appropriately consider the unique characteristics of its loan portfolio segments (C&I, CRE and consumer). These segments are further disaggregated into loan classes, the level at which credit quality is assessed and monitored (as described in the subsequent sections). The ALL is measured on a collective (pool) basis when similar risk characteristics exist. Loans are grouped based upon the nature of the loan type and are further segregated based upon the methods for risk assessment. Credit loss assumptions are primarily estimated using a DCF model applied to the aforementioned loan groupings. This model calculates an expected life-of-loan loss percentage for each loan category by considering the forecasted PD, which is the probability that a borrower will default, adjusted for relevant forecasted macroeconomic factors comprising multiple weighted scenarios representing different plausible outcomes, and LGD, which is the estimate of the amount of net loss in the event of default. Expected credit losses are estimated over the contractual term of the loan, adjusted for expected prepayments and curtailments when appropriate. Management's determination of the contract term excludes expected extensions, renewals, and modifications unless either of the following applies: there is a reasonable expectation at the reporting date that a TDR will be executed with an individual borrower, or an extension or renewal option is included in the contract at the reporting date that is not unconditionally cancellable by Synovus. To the extent the lives of the loans in the portfolio extend beyond the period for which a reasonable and supportable forecast can be made (which is two years for Synovus), the Company reverts, on a straight-line basis back to the historical rates over a one year period. Life-of-loan loss percentages may also be adjusted, as necessary, for certain quantitative and qualitative factors that in management's judgment are necessary to reflect losses expected in the portfolio. These adjustments address inherent limitations in the quantitative model including uncertainty and limitations, among others. The above reflects the ALL estimation process for most commercial and consumer sub-pools. In some cases, Synovus may apply other acceptable loss rate models to smaller sub-pools. Loans that do not share risk characteristics are individually evaluated on a loan-by-loan basis with specific reserves, if any, recorded as appropriate. Specific reserves are determined based on two methods: discounted cash flow based upon the loan's contractual effective interest rate or at the fair value of the collateral, less costs to sell if the loan is collateral-dependent. For individually evaluated loans, under the DCF method, resulting expected credit losses are recorded as a specific reserve with a charge-off for any portion of the expected credit loss that is determined not to be recoverable. The reserve is reassessed each quarter and adjusted as appropriate based on changes in estimated cash flows. Additionally, where guarantors are determined to be a source of repayment, an assessment of the guarantee is required. This guarantee assessment would include, but not be limited to, factors such as type and feature of the guarantee, consideration for the guarantor's financial strength and capacity to service the loan in combination with the guarantor's other financial obligations as well as the guarantor's willingness to assist in servicing the loan. For individually evaluated loans, if the loan is collateral-dependent, then the fair value of the loan's collateral, less estimated selling costs, is compared to the loan's carrying amount to determine impairment. Fair value is estimated using appraisals performed by a certified or licensed appraiser. Management also considers other factors or recent developments, such as changes in absorption rates or market conditions at the time of valuation, selling costs and anticipated sales values, taking into account management's plans for disposition, which could result in adjustments to the fair value estimates indicated in the appraisals. The assumptions used in determining the amount of the impairment are subject to significant judgment. Use of different assumptions, for example, changes in the fair value of the collateral or management's plans for disposition could have a significant impact on the amount of impairment. Purchased Loans with Credit Deterioration Purchased loans are evaluated upon acquisition in order to determine if the loan, or pool of loans, has experienced more-than-insignificant deterioration in credit quality since origination or issuance. In the performance of this evaluation, Synovus considers migration of the credit quality of the loans at origination in comparison to the credit quality at acquisition. Purchased loans classified as PCD are recognized in accordance with ASC 326-20-30, whereby the amortized cost basis of the PCD asset is ‘grossed-up’ by the initial estimate of credit losses with an offset to the ALL. This acquisition date allowance has no income statement effect. Post-acquisition, any changes in estimates of expected credit losses are recorded through the provision for credit losses. Non-credit discounts or premiums are accreted or amortized, respectively into interest income using the interest method. The accounting treatment for purchased loans classified as non-PCD is the same as loans held for investment as detailed in the above section. Allowance for Credit Losses on Off-balance-sheet Credit Exposures Synovus maintains a separate ACL for off-balance-sheet credit exposures, including unfunded loan commitments, unless the associated obligation is unconditionally cancellable by the Company. This allowance is included in other liabilities on the consolidated balance sheets with associated expense recognized as a component of the provision for credit losses on the consolidated statements of income. The reserve for off-balance-sheet credit exposures considers the likelihood that funding will occur and estimates the expected credit losses on resulting commitments expected to be funded over their estimated life using the estimated loss rates on loans held for investment. Commercial Loans - Risk Ratings Synovus utilizes two primary methods for risk assessment of the commercial loan portfolio: SRR Assessment and DRR Assessment. DRR is a statistical model approach to risk rating that includes a PD and a LGD. The SRR model is an expert judgment based model that results in a blended (i.e. single) rating. The single and dual risk ratings are based on the borrowers' credit risk profile, considering factors such as debt service history, current and estimated prospective cash flow information, collateral supporting the credit, source of repayment as well as other variables, as appropriate. Each loan is assigned a risk rating during its initial approval process. Commercial loans include classifications of pass, special mention, substandard, doubtful, and loss consistent with bank regulatory classifications. The loan rating (for both SRR and DRR loans) is subject to approvals from other members of management, regional credit and/or loan committees depending on the size of the loan and credit attributes. Loan ratings are regularly re-evaluated based upon annual scheduled credit reviews or on a more frequent basis if determined prudent by management. Additionally, an independent loan review function evaluates Synovus' risk rating processes on a continuous basis. The primary determinants of the risk ratings for commercial loans are the reliability of the primary source of repayment and the borrower's expected performance. Expected performance is based upon a full analysis of the borrower's historical financial results, current financial strength and future prospects, which includes any external drivers. Consumer Loans – Risk Ratings Consumer loans are subject to uniform lending policies and consist primarily of loans with strong borrower credit scores. Synovus makes consumer lending decisions based upon a number of key credit risk determinants including FICO scores as well as loan-to-value and debt-to-income ratios. Consumer loans are generally assigned a risk rating based on credit bureau scores. At 90 days past due, a loan grade substandard non-accrual is applied and at 120 days past due, the loan is generally charged-off. The consumer loan portfolio is sent on a quarterly basis to a consumer credit reporting agency for a refresh of clients' credit scores so that management can evaluate ongoing consistency or negative migration in the quality of the portfolio. Revolving lines of credit are reviewed for a material change in financial circumstances and, when appropriate, the line of credit may be suspended for further advances. Transfers of Financial Assets Transfers of financial assets in which Synovus has surrendered control over the transferred assets are accounted for as sales. Control over transferred assets is considered to be surrendered when 1) the assets have been legally isolated from Synovus or any consolidated affiliates, even in bankruptcy or other receivership, 2) the transferee has the right to pledge or exchange the assets with no conditions that constrain the transferee and provide more than a trivial benefit to Synovus, and 3) Synovus does not maintain effective control over the transferred assets. If the transfer is accounted for as a sale, the transferred assets are derecognized from the balance sheet and a gain or loss on sale is recognized on the consolidated statements of income. If the sale criteria are not met, the transfer is accounted for as a secured borrowing and the transferred assets remain on Synovus' consolidated balance sheets and the proceeds from the transaction are recognized as a liability. Cash Surrender Value of Bank-Owned Life Insurance Investments in bank-owned life insurance policies on certain current and former officers and employees of Synovus are recorded at the net realizable value of the policies. Net realizable value is the cash surrender value of the policies less any applicable surrender charges and any policy loans. Synovus has not borrowed against the cash surrender value of these policies. Changes in the cash surrender value of the policies as well as proceeds from insurance benefits are recorded in income from bank-owned life insurance on the consolidated statements of income. Premises, Equipment and Software Premises, equipment and software including bank-owned branch locations and leasehold improvements are reported at cost, less accumulated depreciation and amortization, which are computed using the straight-line method over the estimated useful lives of the related assets. Buildings and improvements are depreciated over an average of 10 to 40 years, while furniture, equipment, and software are depreciated and amortized over a range of 3 to 10 years. Synovus capitalizes certain costs associated with the acquisition or development of internal-use software. Once the software is ready for its intended use, these costs are amortized on a straight-line basis over the software’s expected useful life over a range of the lesser of contract terms or 3 to 7 years. Leasehold improvements are depreciated over the shorter of the estimated useful life or the remainder of the lease term. Synovus reviews long-lived assets, such as premises and equipment, for impairment whenever events and circumstances indicate that the carrying amount of an asset may not be recoverable. Maintenance and repairs are charged to non-interest expense and improvements that extend the useful life of the asset are capitalized to the asset's carrying value and depreciated. Goodwill and Other Intangible Assets Goodwill represents the excess purchase price over the fair value of identifiable net assets of acquired businesses. Goodwill is tested for impairment at the reporting unit level, equivalent to a business segment or one level below. Synovus performs its annual evaluation of goodwill impairment during the fourth quarter of each year and as events occur or circumstances change that would more likely than not reduce the fair value of a reporting unit below its carrying amount. Refer to "Part II - Item 8. Financial Statements and Supplementary Data - Note 5 - Goodwill and Other Intangible Assets" of this Report for details of the evaluation. Other intangible assets relate primarily to a core deposit intangible and borrower relationships resulting from business acquisitions. The core deposit intangible is amortized over its estimated useful life of approximately ten years utilizing an accelerated method. The remaining intangible assets are amortized using straight line methods based on the remaining lives of the assets with amortization periods ranging from eight Intangible assets are reviewed for impairment whenever events or changes in circumstances indicate the carrying amount of an asset may not be recoverable. Recoverability of the intangible assets is measured by a comparison of the asset's carrying amount to future undiscounted cash flows expected to be generated by the asset. Any resulting impairment is measured by the amount by which the carrying value exceeds the fair value of the asset (based on the undiscounted cash flows expected to be generated by the asset). Segment Disclosures ASC Topic 280, Segment Reporting , requires information be reported about a company’s operating segments using a “management approach.” Reportable segments are identified as those revenue-producing components for which discrete financial information is produced internally and which are subject to evaluation by the chief operating decision maker in making resource allocation decisions. Based on this guidance, Synovus identified four major reportable business segments: Community Banking, Wholesale Banking, Consumer Banking, and Financial Management Services (FMS), with functional activities such as treasury, technology, operations, marketing, finance, enterprise risk, legal, human resources, corporate communications, executive management, among others, included in Treasury and Corporate Other. Refer to "Part II - Item 8. Financial Statements and Supplementary Data - Note 17 - Segment Reporting" of this Report for additional details. The application and development of management reporting methodologies is a dynamic process and is subject to periodic enhancements. As these enhancements are made, financial results presented by each reportable segment may be periodically revised. Other Assets Other assets include net deferred tax assets, investments in tax credits and CRA partnerships, ROU assets, FRB and FHLB stock, accrued interest receivable, accounts receivable, derivative asset positions, prepaid expense, other investments, and other balances as shown in "Part II - Item 8. Financial Statements and Supplementary Data - Note 6 - Other Assets" of this Report. Derivative Instruments Synovus’ risk management policies emphasize the management of interest rate risk within acceptable guidelines. Synovus’ objective in maintaining these policies is to limit volatility in net interest income arising from changes in interest rates. Risks to be managed include both fair value and cash flow risks. Utilization of derivative financial instruments provides a valuable tool to assist in the management of these risks. All derivative instruments are recorded on the consolidated balance sheets at their respective fair values, net of variation margin payments, as components of other assets and other liabilities. The accounting for changes in fair value (i.e., unrealized gains or losses) of a derivative instrument depends on whether it qualifies and has been designated as part of a hedging relationship. Synovus formally assesses, both at the hedge’s inception and on an ongoing basis, whether the derivative instruments that are used are highly effective in offsetting changes in fair values or cash flows of the hedged items. Fair value hedges - If the hedged exposure is a fair value exposure, the unrealized gain or loss on the derivative instrument is recognized in earnings in the period of change, in the same income statement line as the offsetting unrealized loss or gain on the hedged item attributable to the risk being hedged. When a fair value hedge is discontinued, the cumulative basis adjustments related to the hedged asset or liability are amortized to earnings in the same manner as other components of the carrying amount of that asset of liability. Cash flow hedges - If the hedged exposure is a cash flow exposure, the effective portion of the gain or loss on the derivative instrument is reported initially as a component of accumulated other comprehensive income (loss), net of the tax impact, and subsequently reclassified into earnings when the hedged transaction affects earnings with the impacts recorded in the same income statement line item used to present the earnings effect of the hedged item. When a cash flow hedge is discontinued but the hedged cash flows or forecasted transactions are still expected to occur, gains or losses that were accumulated in other comprehensive income (loss) are amortized into earnings over the same periods which the hedged transactions are still expected to affect earnings. If, however, it is probable the forecasted transactions will no longer occur, the accumulated amounts in OCI at the de-designation date are immediately recognized in earnings. If the derivative instrument is not designated as a hedge, the gain or loss on the derivative instrument is recognized in earnings as a component of non-interest

Investment Securities Available

Investment Securities Available for Sale	12 Months Ended
	Dec. 31, 2022
Investments [Abstract]
Investment Securities Available for Sale	Note 2 - Investment Securities Available for Sale The amortized cost, gross unrealized gains and losses, and estimated fair values of investment securities available for sale at December 31, 2022 and 2021 are summarized below. December 31, 2022 (in thousands) Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value U.S. Treasury securities $ 515,953 $ — $ (44,140) $ 471,813 U.S. Government agency securities 52,411 — (3,613) 48,798 Mortgage-backed securities issued by U.S. Government agencies 904,593 1,624 (113,468) 792,749 Mortgage-backed securities issued by U.S. Government sponsored enterprises 8,144,374 936 (1,250,240) 6,895,070 Collateralized mortgage obligations issued by U.S. Government agencies or sponsored enterprises 769,498 — (114,371) 655,127 Commercial mortgage-backed securities issued by U.S. Government agencies or sponsored enterprises 877,590 — (71,645) 805,945 Corporate debt securities and other debt securities 8,908 — (307) 8,601 Total investment securities available for sale $ 11,273,327 $ 2,560 $ (1,597,784) $ 9,678,103 December 31, 2021 (in thousands) Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value U.S. Treasury securities $ 120,465 $ — $ (2,627) $ 117,838 U.S. Government agency securities 53,214 1,374 (387) 54,201 Mortgage-backed securities issued by U.S. Government agencies 790,329 768 (11,464) 779,633 Mortgage-backed securities issued by U.S. Government sponsored enterprises 8,063,890 50,491 (102,080) 8,012,301 Collateralized mortgage obligations issued by U.S. Government agencies or sponsored enterprises 951,691 4,658 (16,726) 939,623 Commercial mortgage-backed securities issued by U.S. Government agencies or sponsored enterprises 479,420 8,644 (6,320) 481,744 Asset-backed securities 514,188 — — 514,188 Corporate debt securities and other debt securities 18,309 492 — 18,801 Total investment securities available for sale $ 10,991,506 $ 66,427 $ (139,604) $ 10,918,329 At December 31, 2022 and 2021, investment securities with a carrying value of $4.47 billion and $4.03 billion, respectively, were pledged to secure certain deposits and other liabilities, as required by law or contractual agreements. Gross unrealized losses on investment securities and the fair value of the related securities, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, at December 31, 2022 and December 31, 2021 are presented below. December 31, 2022 Less than 12 Months 12 Months or Longer Total (in thousands) Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses U.S. Treasury securities $ 139,737 $ (6,789) $ 307,582 $ (37,351) $ 447,319 $ (44,140) U.S. Government agency securities 28,938 (1,053) 19,603 (2,560) 48,541 (3,613) Mortgage-backed securities issued by U.S. Government agencies 187,655 (5,952) 521,395 (107,516) 709,050 (113,468) Mortgage-backed securities issued by U.S. Government sponsored enterprises 1,473,348 (120,135) 5,365,233 (1,130,105) 6,838,581 (1,250,240) Collateralized mortgage obligations issued by U.S. Government agencies or sponsored enterprises 119,649 (10,311) 535,478 (104,060) 655,127 (114,371) Commercial mortgage-backed securities issued by U.S. Government agencies or sponsored enterprises 565,382 (29,383) 240,564 (42,262) 805,946 (71,645) Corporate debt securities and other debt securities 8,601 (307) — — 8,601 (307) Total $ 2,523,310 $ (173,930) $ 6,989,855 $ (1,423,854) $ 9,513,165 $ (1,597,784) December 31, 2021 Less than 12 Months 12 Months or Longer Total (in thousands) Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses U.S. Treasury securities $ 49,648 $ (379) $ 47,590 $ (2,248) $ 97,238 $ (2,627) U.S. Government agency securities 21,760 (387) — — 21,760 (387) Mortgage-backed securities issued by U.S. Government agencies 461,078 (5,858) 244,264 (5,606) 705,342 (11,464) Mortgage-backed securities issued by U.S. Government sponsored enterprises 5,729,476 (82,671) 643,758 (19,409) 6,373,234 (102,080) Collateralized mortgage obligations issued by U.S. Government agencies or sponsored enterprises 187,431 (3,981) 504,238 (12,745) 691,669 (16,726) Commercial mortgage-backed securities issued by U.S. Government agencies or sponsored enterprises 146,672 (2,951) 83,533 (3,369) 230,205 (6,320) Total $ 6,596,065 $ (96,227) $ 1,523,383 $ (43,377) $ 8,119,448 $ (139,604) As of December 31, 2022, Synovus had 213 investment securities in a loss position for less than twelve months and 210 investment securities in a loss position for twelve months or longer. Synovus does not intend to sell investment securities in an unrealized loss position prior to the recovery of the unrealized loss, which may not be until maturity, and has the ability and intent to hold those securities for that period of time. Additionally, Synovus is not currently aware of any circumstances which will require it to sell any of the securities that are in an unrealized loss position prior to the respective securities' recovery of all such unrealized losses. As such, no write-downs to the amortized cost basis of the portfolio were recorded at December 31, 2022. At December 31, 2022, no ACL was established for investment securities. Substantially all of the unrealized losses on the securities portfolio were the result of changes in market interest rates compared to the date the securities were acquired rather than the credit quality of the issuers or underlying loans. U.S. Treasury and agency securities and agency mortgage-backed securities are issued, guaranteed or otherwise supported by the United States government, an agency of the United States government, or a government sponsored enterprise. The amortized cost and fair value by contractual maturity of investment securities available for sale at December 31, 2022 are shown below. The expected life of MBSs or CMOs may differ from contractual maturities because issuers may have the right to call or prepay obligations with or without call or prepayment penalties. For purposes of the maturity table, MBSs and CMOs, which are not due at a single maturity date, have been classified based on the final contractual maturity date. Distribution of Maturities at December 31, 2022 (in thousands) Within One Year 1 to 5 5 to 10 More Than Total Amortized Cost U.S. Treasury securities $ 24,293 $ 441,804 $ 49,856 $ — $ 515,953 U.S. Government agency securities 273 22,148 29,990 — 52,411 Mortgage-backed securities issued by U.S. Government agencies — 534 4 904,055 904,593 Mortgage-backed securities issued by U.S. Government sponsored enterprises — 4,659 109,583 8,030,132 8,144,374 Collateralized mortgage obligations issued by U.S. Government agencies or sponsored enterprises — 91 12,293 757,114 769,498 Commercial mortgage-backed securities issued by U.S. Government agencies or sponsored enterprises — 573,334 238,228 66,028 877,590 Corporate debt securities and other debt securities — 8,908 — — 8,908 Total amortized cost $ 24,566 $ 1,051,478 $ 439,954 $ 9,757,329 $ 11,273,327 Fair Value U.S. Treasury securities $ 24,293 $ 407,430 $ 40,090 $ — $ 471,813 U.S. Government agency securities 273 19,588 28,937 — 48,798 Mortgage-backed securities issued by U.S. Government agencies — 517 4 792,228 792,749 Mortgage-backed securities issued by U.S. Government sponsored enterprises — 4,451 102,400 6,788,219 6,895,070 Collateralized mortgage obligations issued by U.S. Government agencies or sponsored enterprises — 88 11,808 643,231 655,127 Commercial mortgage-backed securities issued by U.S. Government agencies or sponsored enterprises — 540,820 203,757 61,368 805,945 Corporate debt securities and other debt securities — 8,601 — — 8,601 Total fair value $ 24,566 $ 981,495 $ 386,996 $ 8,285,046 $ 9,678,103 Gross gains and gross losses on sales of securities available for sale for the years ended December 31, 2022, 2021, and 2020 are presented below. The specific identification method is used to reclassify gains and losses out of other comprehensive income (loss) at the time of sale. (in thousands) 2022 2021 2020 Gross realized gains on sales $ — $ 1,191 $ 85,375 Gross realized losses on sales — (1,990) (6,444) Investment securities gains (losses), net $ — $ (799) $ 78,931

Loans And Allowance For Loan Lo

Loans And Allowance For Loan Losses	12 Months Ended
	Dec. 31, 2022
Receivables [Abstract]
Loans and Allowance for Loan Losses	Note 3 - Loans and Allowance for Loan Losses Aging and Non-Accrual Analysis The following tables provide a summary of current, accruing past due, and non-accrual loans by portfolio class as of December 31, 2022 and December 31, 2021. December 31, 2022 (in thousands) Current Accruing 30-89 Days Past Due Accruing 90 Days or Greater Past Due Total Accruing Past Due Non-accrual with an ALL Non-accrual without an ALL Total Commercial, financial, and agricultural $ 13,798,639 $ 15,033 $ 1,437 $ 16,470 $ 48,008 $ 11,299 $ 13,874,416 Owner-occupied 8,181,649 487 — 487 9,499 605 8,192,240 Total commercial and industrial 21,980,288 15,520 1,437 16,957 57,507 11,904 22,066,656 Investment properties 11,639,614 960 — 960 1,785 1,688 11,644,047 1-4 family properties 613,049 762 — 762 2,172 950 616,933 Land and development 388,098 77 — 77 1,158 — 389,333 Total commercial real estate 12,640,761 1,799 — 1,799 5,115 2,638 12,650,313 Consumer mortgages 5,163,417 13,969 210 14,179 36,847 — 5,214,443 Home equity 1,742,412 7,795 1 7,796 6,830 — 1,757,038 Credit cards 200,047 1,843 1,722 3,565 — — 203,612 Other consumer loans 1,795,799 21,269 3 21,272 7,220 — 1,824,291 Total consumer 8,901,675 44,876 1,936 46,812 50,897 — 8,999,384 Loans, net of deferred fees and costs $ 43,522,724 $ 62,195 $ 3,373 $ 65,568 $ 113,519 $ 14,542 $ 43,716,353 December 31, 2021 (in thousands) Current Accruing 30-89 Days Past Due Accruing 90 Days or Greater Past Due Total Accruing Past Due Non-accrual with an ALL Non-accrual without an ALL Total Commercial, financial, and agricultural $ 12,068,740 $ 13,378 $ 3,953 $ 17,331 $ 37,918 $ 23,869 $ 12,147,858 Owner-occupied 7,460,184 3,627 59 3,686 7,146 4,050 7,475,066 Total commercial and industrial 19,528,924 17,005 4,012 21,017 45,064 27,919 19,622,924 Investment properties 9,894,924 1,285 717 2,002 3,273 2,577 9,902,776 1-4 family properties 639,631 1,182 93 1,275 4,535 28 645,469 Land and development 463,949 845 154 999 1,918 — 466,866 Total commercial real estate 10,998,504 3,312 964 4,276 9,726 2,605 11,015,111 Consumer mortgages 5,033,537 6,257 126 6,383 29,078 — 5,068,998 Home equity 1,349,027 2,619 — 2,619 9,773 — 1,361,419 Credit cards 201,929 1,233 1,010 2,243 — — 204,172 Other consumer loans 2,011,430 20,369 658 21,027 6,877 — 2,039,334 Total consumer 8,595,923 30,478 1,794 32,272 45,728 — 8,673,923 Loans, net of deferred fees and costs $ 39,123,351 $ 50,795 $ 6,770 $ 57,565 $ 100,518 $ 30,524 $ 39,311,958 Interest income on non-accrual loans outstanding that would have been recorded if the loans had been current and performing in accordance with their original terms wa s $9.0 million and $12.0 million durin g the years ended December 31, 2022 and 2021, respectively. Of the interest income recognized during the years ended December 31, 2022 and 2021, cash-basis interest income was $3.0 million and $2.4 million, respectively. Pledged Loans Loans with carrying values of $16.09 billion and $14.19 billion, respectively, were pledged as collateral for borrowings and capacity at December 31, 2022 and 2021 respectively, to the FHLB and Federal Reserve Bank. Portfolio Segment Risk Factors The risk characteristics and collateral information of each portfolio segment are as follows: Commercial and Industrial Loans - The C&I loan portfolio is comprised of general middle market and commercial banking clients across a diverse set of industries. In accordance with Synovus' lending policy, each loan undergoes a detailed underwriting process which incorporates uniform underwriting standards and oversight in proportion to the size and complexity of the lending relationship. These loans are secured by collateral such as business equipment, inventory, and real estate. Credit decisions on loans in the C&I portfolio are based on cash flow from the operations of the business as the primary source of repayment of the debt, with underlying real estate or other collateral being the secondary source of repayment . PPP loans, which are categorized as C&I loans and guaranteed by the SBA, were $14.7 million and $399.6 million, net of unearned fees, at December 31, 2022 and 2021, respectively. Commercial Real Estate Loans - CRE loans primarily consist of income-producing investment properties loans. Additionally, CRE loans include 1-4 family properties loans as well as land and development loans. Investment properties loans consist of construction and mortgage loans for income-producing properties and are primarily made to finance multi-family properties, hotels, office buildings, shopping centers, warehouses and other commercial development properties. 1-4 family properties loans include construction loans to homebuilders and commercial mortgage loans related to 1-4 family rental properties and are almost always secured by the underlying property being financed by such loans. These properties are primarily located in the markets served by Synovus. Land and development loans include commercial and residential development as well as land acquisition loans and are secured by land held for future development, typically in excess of one year. Properties securing these loans are substantially within markets served by Synovus, and loan terms generally include personal guarantees from the principals. Loans in this portfolio are underwritten based on the LTV of the collateral and the capacity of the guarantor(s). Consumer Loans - The consumer loan portfolio consists of a wide variety of loan products offered through Synovus' banking network including first and second residential mortgages, home equity, and consumer credit card loans, as well as home improvement loans, student, personal, and auto loans from third-party lending ("other consumer loans"). Together, consumer mortgages and home equity comprise the majority of Synovus' consumer loans and are secured by first and second liens on residential real estate primarily located in the markets served by Synovus. The primary source of repayment for all consumer loans is generally the personal income of the borrower(s). Credit Quality Indicators The credit quality of the loan portfolio is reviewed and updated no less frequently than annually using the standard asset classification system utilized by the federal banking agencies. These classifications are divided into three groups: Not Criticized (Pass), Special Mention, and Classified or Adverse rating (Substandard, Doubtful, and Loss) and are defined as follows: Pass - loans which are well protected by the current net worth and paying capacity of the obligor (or guarantors, if any) or by the fair value, less cost to acquire and sell in a timely manner, of any underlying collateral. Special Mention - loans which have potential weaknesses that deserve management's close attention. These loans are not adversely classified and do not expose an institution to sufficient risk to warrant an adverse classification. Substandard - loans which are inadequately protected by the current net worth and paying capacity of the obligor or by the collateral pledged, if any. Loans with this classification are characterized by the distinct possibility that the institution will sustain some loss if the deficiencies are not corrected. Doubtful - loans which have all the weaknesses inherent in loans classified as Substandard with the added characteristic that the weaknesses make collection or liquidation in full highly questionable and improbable on the basis of currently known facts, conditions, and values. Loss - loans which are considered by management to be uncollectible and of such little value that their continuance on the institution's books as an asset, without establishment of a specific valuation allowance or charge-off, is not warranted. Synovus fully reserves for any loans rated as Loss. In the following tables, consumer loans are generally assigned a risk grade similar to the classifications described above; however, upon reaching 90 days and 120 days past due, they are generally downgraded to Substandard and Loss, respectively, in accordance with the FFIEC Retail Credit Classification Policy. Additionally, in accordance with Interagency Supervisory Guidance, the risk grade classifications of consumer loans (consumer mortgages and home equity) secured by junior liens on 1-4 family residential properties also consider available information on the payment status of the associated senior liens with other financial institutions. The following table summarizes each loan portfolio class by regulatory risk grade and origination year as of December 31, 2022 as required by CECL. December 31, 2022 Term Loans Amortized Cost Basis by Origination Year Revolving Loans (in thousands) 2022 2021 2020 2019 2018 Prior Amortized Cost Basis Converted to Term Loans Total Commercial, financial and agricultural Pass $ 1,276,814 $ 1,911,353 $ 1,009,230 $ 782,100 $ 536,001 $ 1,037,488 $ 6,862,070 $ 43,748 $ 13,458,804 Special Mention 4,131 14,289 12,691 6,637 5,716 2,777 81,889 1,710 129,840 Substandard (1) 13,751 17,780 38,943 42,773 18,405 21,418 131,422 1,003 285,495 Loss (3) — — — — — — 277 — 277 Total commercial, financial and agricultural 1,294,696 1,943,422 1,060,864 831,510 560,122 1,061,683 7,075,658 46,461 13,874,416 Owner-occupied Pass 1,537,016 1,675,524 1,137,889 909,525 664,734 1,103,500 866,920 — 7,895,108 Special Mention 4,238 6,760 24,175 13,913 5,024 69,500 — — 123,610 Substandard (1) 19,437 13,381 63,925 7,415 51,364 17,755 — — 173,277 Loss (2) — 245 — — — — — — 245 Total owner-occupied 1,560,691 1,695,910 1,225,989 930,853 721,122 1,190,755 866,920 — 8,192,240 Total commercial and industrial 2,855,387 3,639,332 2,286,853 1,762,363 1,281,244 2,252,438 7,942,578 46,461 22,066,656 Investment properties Pass 2,671,660 3,245,669 1,532,230 1,220,974 775,747 1,543,724 541,118 — 11,531,122 Special Mention 2,379 1,550 — 14,570 5,908 2,388 146 — 26,941 Substandard (1) 5,973 1,455 176 1,688 51,767 3,931 20,994 — 85,984 Total investment properties 2,680,012 3,248,674 1,532,406 1,237,232 833,422 1,550,043 562,258 — 11,644,047 1-4 family properties Pass 248,418 154,181 44,032 33,246 27,053 55,543 47,732 — 610,205 Special Mention 1 — 752 — — 297 — — 1,050 Substandard (1) 1,309 1,429 75 741 836 1,243 45 — 5,678 Total 1-4 family properties 249,728 155,610 44,859 33,987 27,889 57,083 47,777 — 616,933 Land and development Pass 119,801 84,055 21,984 39,484 18,600 64,854 5,078 — 353,856 Special Mention — — 744 — 29,618 1,118 — — 31,480 Substandard (1) 699 325 220 627 472 1,654 — — 3,997 Total land and development 120,500 84,380 22,948 40,111 48,690 67,626 5,078 — 389,333 Total commercial real estate 3,050,240 3,488,664 1,600,213 1,311,330 910,001 1,674,752 615,113 — 12,650,313 December 31, 2022 Term Loans Amortized Cost Basis by Origination Year Revolving Loans (in thousands) 2022 2021 2020 2019 2018 Prior Amortized Cost Basis Converted to Term Loans Total Consumer mortgages Pass $ 857,489 $ 1,188,652 $ 1,356,065 $ 458,441 $ 182,834 $ 1,118,686 $ 143 $ — $ 5,162,310 Substandard (1) 1,153 6,452 8,519 9,442 6,167 19,662 — — 51,395 Loss (2) — — — 4 — 734 — — 738 Total consumer mortgages 858,642 1,195,104 1,364,584 467,887 189,001 1,139,082 143 — 5,214,443 Home equity Pass — — — — — — 1,241,201 504,272 1,745,473 Substandard (1) — — — — — — 6,534 4,512 11,046 Loss (2) — — — — — — 402 117 519 Total home equity — — — — — — 1,248,137 508,901 1,757,038 Credit cards Pass — — — — — — 201,898 — 201,898 Substandard (1) — — — — — — 617 — 617 Loss (3) — — — — — — 1,097 — 1,097 Total credit cards — — — — — — 203,612 — 203,612 Other consumer loans Pass 284,045 524,601 457,684 61,760 31,662 142,189 313,565 — 1,815,506 Substandard (1) 1,417 3,810 1,648 712 163 888 139 — 8,777 Loss (3) — — — — — 8 — — 8 Total other consumer loans 285,462 528,411 459,332 62,472 31,825 143,085 313,704 — 1,824,291 Total consumer 1,144,104 1,723,515 1,823,916 530,359 220,826 1,282,167 1,765,596 508,901 8,999,384 Loans, net of deferred fees and costs $ 7,049,731 $ 8,851,511 $ 5,710,982 $ 3,604,052 $ 2,412,071 $ 5,209,357 $ 10,323,287 $ 555,362 $ 43,716,353 (1) The majority of loans within Substandard risk grade are accruing loans at December 31, 2022. (2) Loans within Loss risk grade are on non-accrual status and have an ALL equal to the full loan amount. (3) Represent amounts that were 120 days past due. These credits are downgraded to the Loss category with an ALL equal to the full loan amount and are generally charged off upon reaching 181 days past due in accordance with the FFIEC Retail Credit Classification Policy. December 31, 2021 Term Loans Amortized Cost Basis by Origination Year Revolving Loans (in thousands) 2021 2020 2019 2018 2017 Prior Amortized Cost Basis Converted to Term Loans Total Commercial, financial and agricultural Pass $ 2,396,717 $ 1,332,549 $ 922,396 $ 607,918 $ 433,045 $ 903,995 $ 5,151,981 $ 42,809 $ 11,791,410 Special Mention 2,731 15,166 17,571 10,433 2,242 2,489 71,996 — 122,628 Substandard (1) 16,105 50,979 40,125 10,383 16,473 37,565 51,442 33 223,105 Doubtful (2) 469 — 1,601 8,512 — — 48 — 10,630 Loss (4) — — — — — — 85 — 85 Total commercial, financial and agricultural 2,416,022 1,398,694 981,693 637,246 451,760 944,049 5,275,552 42,842 12,147,858 Owner-occupied Pass 1,776,086 1,276,797 1,117,825 858,721 708,942 1,116,766 437,724 — 7,292,861 Special Mention 702 19,950 4,724 10,202 18,109 36,481 — — 90,168 Substandard (1) 7,312 1,294 8,386 43,276 6,169 25,329 — — 91,766 Loss (3) 271 — — — — — — — 271 Total owner-occupied 1,784,371 1,298,041 1,130,935 912,199 733,220 1,178,576 437,724 — 7,475,066 Total commercial and industrial 4,200,393 2,696,735 2,112,628 1,549,445 1,184,980 2,122,625 5,713,276 42,842 19,622,924 Investment properties Pass 2,823,978 1,463,503 1,905,534 1,019,765 738,036 1,317,634 278,697 — 9,547,147 Special Mention 6,163 — 32,290 63,900 59,194 44,532 33,659 — 239,738 Substandard (1) 1,465 326 8,550 57,127 3,564 23,505 21,354 — 115,891 Total investment properties 2,831,606 1,463,829 1,946,374 1,140,792 800,794 1,385,671 333,710 — 9,902,776 1-4 family properties Pass 295,082 82,976 51,939 43,025 49,057 57,025 55,588 — 634,692 Special Mention 192 207 641 — — 239 — — 1,279 Substandard (1) 1,999 — 566 4,222 489 2,177 45 — 9,498 Total 1-4 family properties 297,273 83,183 53,146 47,247 49,546 59,441 55,633 — 645,469 Land and development Pass 141,614 42,201 77,868 34,058 37,167 44,989 44,730 — 422,627 Special Mention — 800 1,900 31,458 — 1,179 — — 35,337 Substandard (1) 824 1,149 46 3,021 807 3,055 — — 8,902 Total land and development 142,438 44,150 79,814 68,537 37,974 49,223 44,730 — 466,866 Total commercial real estate 3,271,317 1,591,162 2,079,334 1,256,576 888,314 1,494,335 434,073 — 11,015,111 December 31, 2021 Term Loans Amortized Cost Basis by Origination Year Revolving Loans (in thousands) 2021 2020 2019 2018 2017 Prior Amortized Cost Basis Converted to Term Loans Total Consumer mortgages Pass $ 1,274,999 $ 1,556,733 $ 572,467 $ 216,277 $ 392,492 $ 1,001,771 $ 255 $ — $ 5,014,994 Substandard (1) 1,031 3,680 5,943 12,387 5,717 25,025 — — 53,783 Loss (3) — — 5 — — 216 — — 221 Total consumer mortgages 1,276,030 1,560,413 578,415 228,664 398,209 1,027,012 255 — 5,068,998 Home equity Pass — — — — — — 1,199,556 146,635 1,346,191 Substandard (1) — — — — — — 9,058 5,372 14,430 Loss (3) — — — — — — 658 140 798 Total home equity — — — — — — 1,209,272 152,147 1,361,419 Credit cards Pass — — — — — — 203,161 — 203,161 Substandard (1) — — — — — — 348 — 348 Loss (4) — — — — — — 663 — 663 Total credit cards — — — — — — 204,172 — 204,172 Other consumer loans Pass 654,419 708,937 127,131 49,993 86,175 97,765 306,500 — 2,030,920 Substandard (1) 668 1,550 2,064 1,308 1,892 750 162 — 8,394 Loss (4) — — — — — 20 — — 20 Total other consumer loans 655,087 710,487 129,195 51,301 88,067 98,535 306,662 — 2,039,334 Total consumer 1,931,117 2,270,900 707,610 279,965 486,276 1,125,547 1,720,361 152,147 8,673,923 Loan, net of deferred fees and costs $ 9,402,827 $ 6,558,797 $ 4,899,572 $ 3,085,986 $ 2,559,570 $ 4,742,507 $ 7,867,710 $ 194,989 $ 39,311,958 (1) The majority of loans within Substandard risk grade are accruing loans at December 31, 2021. (2) Loans within Doubtful risk grade are on non-accrual status and generally have an ALL equal to 50% of the loan amount. (3) Loans within Loss risk grade are on non-accrual status and have an ALL equal to the full loan amount. (4) Represent amounts that were 120 days past due. These credits are downgraded to the Loss category with an ALL equal to the full loan amount and are generally charged off upon reaching 181 days past due in accordance with the FFIEC Retail Credit Classification Policy. Collateral-Dependent Loans We classify a loan as collateral-dependent when our borrower is experiencing financial difficulty, and we expect repayment to be provided substantially through the operation or sale of collateral. Our commercial loans have collateral that is comprised of real estate and business assets. Our consumer loans have collateral that is substantially comprised of residential real estate. There were no significant changes in the extent to which collateral secures our collateral-dependent loans during the years ended December 31, 2022 and 2021. Rollforward of Allowance for Loan Losses The following tables detail the changes in the ALL by loan segment for the years ended December 31, 2022, 2021, and 2020. For the years ended December 31, 2022 and 2021 , Synovus had no significant transfers to loans held for sale. For the year ended December 31, 2020, Synovus reversed a net amount of $18.3 million in previously established reserves for credit losses associated with net transfers to held for sale of $1.43 billion in performing loans, primarily related to third-party single-service consumer loans and non-relationship consumer mortgages. As of and For The Year Ended December 31, 2022 (in thousands) Commercial & Industrial Commercial Real Estate Consumer Total Allowance for loan losses: Beginning balance $ 188,364 $ 97,760 $ 141,473 $ 427,597 Charge-offs (42,588) (3,102) (38,020) (83,710) Recoveries 14,625 1,633 14,296 30,554 Provision for (reversal of) loan losses 1,149 47,284 20,550 68,983 Ending balance $ 161,550 $ 143,575 $ 138,299 $ 443,424 As of and For The Year Ended December 31, 2021 (in thousands) Commercial & Industrial Commercial Real Estate Consumer Total Allowance for loan losses: Beginning balance $ 229,555 $ 130,742 $ 245,439 $ 605,736 Charge-offs (59,457) (15,392) (30,383) (105,232) Recoveries 9,734 7,444 10,266 27,444 Provision for (reversal of) loan losses 8,532 (25,034) (83,849) (100,351) Ending balance $ 188,364 $ 97,760 $ 141,473 $ 427,597 As of and For The Year Ended December 31, 2020 (in thousands) Commercial & Industrial Commercial Real Estate Consumer Total Allowance for loan losses: Beginning balance, prior to adoption of ASC 326 $ 145,782 $ 67,430 $ 68,190 $ 281,402 Impact from adoption of ASC 326 (2,310) (651) 85,955 82,994 Beginning balance, after adoption of ASC 326 143,472 66,779 154,145 364,396 Charge-offs (76,260) (13,213) (29,789) (119,262) Recoveries 13,544 2,857 8,149 24,550 Provision for (reversal of) loan losses 148,799 74,319 112,934 336,052 Ending balance $ 229,555 $ 130,742 $ 245,439 $ 605,736 The ALL of $443.4 million and the reserve for unfunded commitments of $57.5 million, which is recorded in other liabilities, comprise the total ACL of $500.9 million at December 31, 2022. The ACL increased $31.4 million compared to the December 31, 2021 ACL of $469.5 million , which consisted of an ALL of $427.6 million and the reserve for unfunded commitments of $41.9 million . The ACL to loans coverage ratio of 1.15% at December 31, 2022 was 4 bps lower compared to December 31, 2021. The increase in the ACL from December 31, 2021 resulted primarily from loan growth and an increase in the reserve for unfunded commitments, largely due to an increase in both reserve rates and the level of unfunded commitments, mostly offset by decreased specific reserves and continued positive trends in our credit performance. The ACL is estimated using a two-year reasonable and supportable forecast period. To the extent the lives of the loans in the portfolio extend beyond the period for which a reasonable and supportable forecast can be made, the Company reverts on a straight-line basis back to the historical rates over a one-year period. Synovus utilizes multiple economic forecast scenarios sourced from a reputable third-party provider that are probability-weighted internally. The current scenarios include a consensus baseline forecast, an upside scenario reflecting an accelerated recovery, a downside scenario that reflects adverse economic conditions, and an additional adverse scenario that assumes consistent slow growth that is less optimistic than the baseline. At December 31, 2022, the unemployment rate is the input that most significantly impacts our estimate. The multi-scenario forecast used in our estimate includes a weighted average unemployment rate of 4.7% over the forecast period at December 31, 2022, compared to 4.4% at December 31, 2021. TDRs Information about Synovus' TDRs is presented in the following tables. Synovus began entering into loan modifications with borrowers in response to the COVID-19 pandemic under the CARES Act, some of which had not been classified as TDRs. The CARES Act election period ended on January 1, 2022. The following tables present, by concession type, the post-modification balance for loans modified or renewed during the years ended December 31, 2022, 2021, and 2020 that were reported as accruing or non-accruing TDRs. TDRs by Concession Type Year Ended December 31, 2022 (in thousands, except contract data) Number of Contracts Below Market Interest Rate Other Concessions (1) Total Commercial, financial, and agricultural 86 $ 34,518 $ 1,279 $ 35,797 Owner-occupied 29 65,956 3,857 69,813 Total commercial and industrial 115 100,474 5,136 105,610 Investment properties 7 5,026 6,610 11,636 1-4 family properties 14 3,850 — 3,850 Land and development 4 3,168 — 3,168 Total commercial real estate 25 12,044 6,610 18,654 Consumer mortgages 10 1,176 266 1,442 Home equity 41 4,836 39 4,875 Other consumer loans 15 — 605 605 Total consumer 66 6,012 910 6,922 Loans, net of deferred fees and costs 206 $ 118,530 $ 12,656 $ 131,186 (2) Year Ended December 31, 2021 (in thousands, except contract data) Number of Contracts Below Market Interest Rate Other Concessions (1) Total Commercial, financial, and agricultural 152 $ 12,746 $ 8,096 $ 20,842 Owner-occupied 24 5,908 868 6,776 Total commercial and industrial 176 18,654 8,964 27,618 Investment properties 9 3,130 — 3,130 1-4 family properties 13 1,131 123 1,254 Land and development 8 1,948 60 2,008 Total commercial real estate 30 6,209 183 6,392 Consumer mortgages 18 2,512 1,006 3,518 Home equity 55 4,991 258 5,249 Other consumer loans 103 435 5,720 6,155 Total consumer 176 7,938 6,984 14,922 Loans, net of deferred fees and costs 382 $ 32,801 $ 16,131 $ 48,932 (3) TDRs by Concession Type (continued) Year Ended December 31, 2020 (in thousands, except contract data) Number of Contracts Below Market Interest Rate Other Concessions (1) Total Commercial, financial, and agricultural 152 $ 10,939 $ 11,912 $ 22,851 Owner-occupied 22 4,536 1,530 6,066 Total commercial and industrial 174 15,475 13,442 28,917 Investment properties 9 29,679 1,420 31,099 1-4 family properties 22 1,769 1,105 2,874 Land and development 4 606 — 606 Total commercial real estate 35 32,054 2,525 34,579 Consumer mortgages 23 1,866 2,789 4,655 Home equity 63 1,970 2,530 4,500 Other consumer loans 57 1,185 2,779 3,964 Total consumer 143 5,021 8,098 13,119 Loans, net of deferred fees and costs 352 $ 52,550 $ 24,065 $ 76,615 (4) (1) Other concessions generally include term extensions, interest only payments for a period of time, or principal forgiveness, but there was no principal forgiveness for the years ended December 31, 2022, 2021, and 2020. (2) No charge-offs were recorded during the year ended December 31, 2022 upon restructuring of these loans. (3) No charge-offs were recorded during the year ended December 31, 2021 upon restructuring of these loans. (4) No charge-offs were recorded during the year ended December 31, 2020 upon restructuring of these loans. For the years ended December 31, 2022, 2021 and 2020, there were five defaults with a recorded investment of $1.0 million, eight defaults with a recorded investment of $978 thousand, and seven defaults with a recorded investment of $21.7 million, respectively, on accruing TDRs restructured during the previous twelve months (defaults are defined as the earlier of the TDR being placed on non-accrual status or reaching 90 days past due with respect to principal and/or interest payments). As of December 31, 2022 and 2021, there were no commitments to lend a material amount of additional funds to any client s whose loans were classified as TDRs .

Premises Equipment and Software

Premises Equipment and Software	12 Months Ended
	Dec. 31, 2022
Property, Plant and Equipment [Abstract]
Premises Equipment and Software	Note 4 - Premises, Equipment and Software Premises, equipment and software at December 31, 2022 and 2021 consist of the following: (in thousands) 2022 2021 Land $ 92,125 $ 104,768 Buildings and improvements 303,934 361,593 Leasehold improvements 89,619 55,098 Furniture, equipment and software 422,495 441,091 Construction in progress 17,528 18,918 Total premises, equipment and software 925,701 981,468 Less: Accumulated depreciation and amortization (555,069) (574,227) Net premises, equipment and software $ 370,632 $ 407,241 Net premises, equipment, and software

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	12 Months Ended
	Dec. 31, 2022
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangible Assets	Note 5 - Goodwill and Other Intangible Assets During the first quarter of 2022, Synovus reorganized its internal management reporting structure to add an additional segment for Consumer Banking. The Consumer Banking segment was previously included in the Community Banking segment. In connection with the reorganization, management reallocated a portion of the Community Banking goodwill to Consumer Banking using a relative fair value approach. See "Part II - Item 8. Financial Statements and Supplementary Data - Note 17 - Segment Reporting" in this Report for additional information. Goodwill allocated to each reporting unit at December 31, 2022 and 2021 is presented as follows: (in thousands) Wholesale Banking Reporting Unit Community Banking Reporting Unit Consumer Banking Reporting Unit Wealth Management Reporting Unit Total Goodwill Balance as of December 31, 2020 (1) $ 171,636 $ 256,323 $ — $ 24,431 $ 452,390 Change in goodwill — — — — — Balance as of December 31, 2021 $ 171,636 $ 256,323 $ — $ 24,431 $ 452,390 Change in goodwill from reallocation — (114,701) 114,701 — — Balance as of December 31, 2022 $ 171,636 $ 141,622 $ 114,701 $ 24,431 $ 452,390 (1) During 2020, Synovus recorded a $44.9 million goodwill impairment charge representing all of the goodwill allocated to the Consumer Mortgage reporting unit; as such, the Consumer Mortgage reporting unit is not presented in the table above. Goodwill is evaluated for impairment on an annual basis or whenever an event occurs or circumstances change to indicate that it is more likely than not that an impairment loss has been incurred (i.e., a triggering event). During the fourth quarter of 2022, Synovus completed its annual goodwill impairment evaluation by performing a qualitative assessment of goodwill at the reporting unit level. In performing the qualitative assessment, the Company evaluated events and circumstances since the last impairment analysis, recent operating performance including reporting unit performance, changes in market capitalization, changes in the business climate, company-specific factors and trends in the banking industry. The results of the qualitative assessment indicated that it was more likely than not that the estimated fair value of each reporting unit exceeded its carrying amount as of the test date; therefore, the quantitative goodwill impairment tests were deemed unnecessary. The following table shows the gross carrying amount and accumulated amortization of other intangible assets as of December 31, 2022 and 2021, which primarily consist of core deposit intangible assets. The CDI is being amortized over its estimated useful life of approximately ten years utilizing an accelerated method. Aggregate other intangible assets amortization expense for the years ended December 31, 2022, 2021, and 2020 was $8.5 million, $9.5 million, and $10.6 million, respectively, and is included in other operating expense on the consolidated statements of income. (in thousands) Gross Carrying Amount Accumulated Amortization Net Carrying Value December 31, 2022 CDI $ 57,400 $ (35,484) $ 21,916 Other 12,500 (7,292) 5,208 Total other intangible assets $ 69,900 $ (42,776) $ 27,124 December 31, 2021 CDI 57,400 (28,178) $ 29,222 Other 12,500 (6,126) 6,374 Total other intangible assets $ 69,900 $ (34,304) $ 35,596 The estimated amortization expense of other intangible assets for the next five years is as follows: (in thousands) Amortization Expense 2023 $ 7,429 2024 6,366 2025 5,266 2026 4,195 2027 2,824

Other Assets

Other Assets	12 Months Ended
	Dec. 31, 2022
Other Assets [Abstract]
Other Assets	Note 6 - Other Assets Significant balances included in other assets at December 31, 2022 and 2021 are presented below. (in thousands) 2022 2021 Deferred tax asset, net $ 595,317 $ 169,051 Investments in tax credits and CRA partnerships 496,527 426,137 ROU assets 421,481 411,472 Federal Reserve Bank and FHLB Stock 308,321 159,941 Accrued interest receivable 226,209 145,659 Accounts receivable 152,460 81,325 Derivative asset positions 89,815 191,708 Prepaid expense 48,152 42,874 Mutual funds and mutual funds held in rabbi trusts 42,659 43,657 MPS receivable (1) 15,320 15,320 Other investments 11,172 12,185 Trading securities, at fair value 8,295 8,391 Other real estate — 11,818 Miscellaneous other assets 55,910 70,660 Total other assets $ 2,471,638 $ 1,790,198 (1) See "Part II - Item 8. Financial Statements and Supplementary Data - Note 14 - Commitments and Contingencies" in this Report for more information on this receivable which is classified as a NPA. As a member of the Federal Reserve System, Synovus is currently required to purchase and hold shares of capital stock in the Federal Reserve Bank of Atlanta (recorded at amortized cost, which approximates fair value, of $128.6 million and $143.7 million at December 31, 2022 and 2021, respectively) in an amount equal to the greater of 6% of its capital and surplus or 0.6% of deposits. As a member of the FHLB, Synovus is also required to purchase and hold shares of capital stock in the FHLB (recorded at amortized cost, which approximates fair value, of $179.7 million and $16.2 million at December 31, 2022 and 2021, respectively) in an amount equal to its membership base investment plus an activity-based investment determined according to the level of outstanding FHLB advances.

Deposits

Deposits	12 Months Ended
	Dec. 31, 2022
Interest-Bearing Deposit Liabilities [Abstract]
Deposits	Note 7 - Deposits A summary of interest-bearing deposits at December 31, 2022 and 2021 is presented below. ( in thousands) 2022 2021 Interest-bearing demand deposits (1) $ 8,721,397 $ 9,321,611 Money market accounts (1) 14,830,934 16,364,338 Savings accounts 1,416,246 1,420,647 Time deposits (1) 2,964,078 3,093,027 Brokered deposits 5,299,005 2,835,000 Total interest-bearing deposits $ 33,231,660 $ 33,034,623 (1) Excluding brokered deposits The aggregate amount of time deposits (excluding brokered deposits) of $250,000 or more was $1.20 billion at December 31, 2022 and $1.33 billion at December 31, 2021. The following table presents contractual maturities of all time deposits, including brokered time deposits, at December 31, 2022. (in thousands) Maturing within one year $ 3,908,149 Between 1 - 2 years 1,748,784 2 - 3 years 567,936 3 - 4 years 32,037 4 - 5 years 26,282 Thereafter 11,837 Total $ 6,295,025

Other Short-term Borrowings and

Other Short-term Borrowings and Long-term Debt	12 Months Ended
	Dec. 31, 2022
Debt Disclosure [Abstract]
Other Short-term Borrowings and Long-term Debt	Note 8 - Other Short-term Borrowings and Long-term Debt Other Short-term Borrowings Other short-term borrowings at December 31, 2022 and 2021 consisted of the following: (dollars in thousands) 2022 2021 FHLB advances with original maturities of one year or less $ 600,014 $ — Securities sold short 3,370 200 Total other short-term borrowings $ 603,384 $ 200 The following table sets forth additional information on Synovus' other short-term borrowings for the years indicated. (dollars in thousands) 2022 2021 Total balance at December 31, $ 603,384 $ 200 Weighted average interest rate at December 31, 4.51 % 0.08 % Maximum month-end balance during the year $ 1,705,069 $ 200 Average amount outstanding during the year 466,254 8 Weighted average interest rate during the year 2.32 % — % Long-term Debt The following table presents long-term debt at December 31, 2022 and 2021 net of unamortized discounts, debt issuance costs, and the impact of hedge accounting (refer to "Part II - Item 8. Financial Statements and Supplementary Data - Note 13 - Derivative Instruments" of this Report for additional information). (dollars in thousands) 2022 2021 Parent Company: 3.125% Senior Notes, issued November 1, 2017, due November 1, 2022, $300.0 million par value with semi-annual interest payments and principal to be paid at maturity $ — $ 299,479 5.90% Fixed-to-Fixed Rate Subordinated Notes issued February 7, 2019, due February 7, 2029, subject to redemption prior to February 7, 2029: $300.0 million par value with semi-annual interest payments at 5.90% for the first five years and semi-annual payments thereafter at a fixed rate of 3.379% above the 5-Year Mid-Swap Rate as of the reset date 298,158 297,855 5.200% Senior Notes issued August 11, 2022, due August 11, 2025, subject to redemption on or after February 11, 2023, $350.0 million par value with semi-annual interest payments in arrears and principal to be paid at maturity 336,332 — LIBOR + 1.80% junior subordinated debentures, due June 15, 2035, $10.0 million par value with quarterly interest payments and principal to be paid at maturity (rate of 6.57% at December 31, 2022 and 2.00% at December 31, 2021) 10,000 10,000 Total long-term debt — Parent Company $ 644,490 $ 607,334 Synovus Bank: 2.289% Fixed-to-Floating Rate Senior Bank Notes issued February 12, 2020, due February 10, 2023, subject to redemption on February 10, 2022: $400.0 million par value with semi-annual interest payments at 2.289% for the first two years and quarterly payments thereafter at an adjustable rate equal to the then-current SOFR + 94.5 bps per annum (1) $ — $ 399,269 4.00% Fixed-to-Fixed Rate Subordinated Bank Notes issued October 29, 2020, due October 29, 2030, $200.0 million par value with semi-annual interest payments at 4.00% for the first five years and semi-annual payments thereafter at a fixed rate of 3.625% above the 5-Year U.S. Treasury Rate 190,107 197,626 FHLB advances with weighted average interest rate of 4.56% at December 31, 2022 3,275,000 — Total long-term debt — Synovus Bank 3,465,107 596,895 Total long-term debt $ 4,109,597 $ 1,204,229 (1) Synovus Bank called these Notes and settled them on February 10, 2022 with a net payment of $405.3 million that included principal, interest, and written off debt issuance costs. The provisions of the indentures governing Synovus’ long-term debt contain certain restrictions within specified limits on mergers, sales of all or substantially all of Synovus' assets and limitations on sales and issuances of voting stock of subsidiaries and Synovus’ ability to pay dividends on its capital stock if there is an event of default under the applicable indenture. As of December 31, 2022 and 2021, Synovus and its subsidiaries were in compliance with the covenants in these agreements. Contractual annual principal payments on long-term debt for the next five years and thereafter are shown in the following table. These maturities are based upon the par value of the long-term debt. (in thousands) Parent Synovus Bank Total 2023 $ — $ 500,000 $ 500,000 2024 — 2,775,000 2,775,000 2025 350,000 — 350,000 2026 — — — 2027 — — — Thereafter 310,000 200,000 510,000 Total $ 660,000 $ 3,475,000 $ 4,135,000

Shareholders' Equity and Other

Shareholders' Equity and Other Comprehensive Income	12 Months Ended
	Dec. 31, 2022
Stockholders' Equity Note [Abstract]
Shareholders' Equity and Other Comprehensive Income	Note 9 - Shareholders' Equity and Other Comprehensive Income The following table shows the changes in shares of preferred and common stock issued and common stock held as treasury shares for the years ended December 31, 2022, 2021, and 2020. (shares in thousands) Series D Preferred Stock Issued Series E Preferred Stock Issued Total Preferred Stock Issued Common Stock Issued Treasury Stock Held Common Stock Outstanding Balance at December 31, 2019 8,000 14,000 22,000 166,801 19,643 147,158 Issuance of common stock for earnout payment — — — 379 — 379 Restricted share unit activity — — — 389 — 389 Stock options exercised — — — 564 — 564 Repurchase of common stock — — — — 450 (450) Balance at December 31, 2020 8,000 14,000 22,000 168,133 20,093 148,040 Warrants exercised and common stock reissued — — — — (3) 3 Common stock reissued for earnout payment — — — — (125) 125 Restricted share unit activity — — — 355 — 355 Stock options exercised — — — 896 — 896 Repurchase of common stock — — — — 4,409 (4,409) Balance at December 31, 2021 8,000 14,000 22,000 169,384 24,374 145,010 Restricted share unit activity — — — 399 — 399 Stock options exercised — — — 358 — 358 Repurchase of common stock — — — — 281 (281) Balance at December 31, 2022 8,000 14,000 22,000 170,141 24,655 145,486 Preferred Stock The following table presents a summary of Preferred Stock as of December 31, 2022, 2021, and 2020. Issuance Date Public Offering Amount Net Proceeds Earliest Redemption Date Dividend Rate (1) Liquidation Preference Series D June 21, 2018 $200.0 million $195.1 million June 21, 2023 6.300 % (2) $25 per share Series E July 1, 2019 $350.0 million $342.0 million July 1, 2024 5.875 % (3) $25 per share (1) Dividends on all series of Preferred Stock are non-cumulative and, if declared, will accrue and be payable in arrears, quarterly. (2) Dividends, if declared, will be paid quarterly at a rate per annum equal to 6.300% for each dividend period from the original issue date to, but excluding, June 21, 2023. From and including June 21, 2023, the dividend rate will change to a floating rate equal to the three-month LIBOR plus a spread of 3.352% per annum. Dividends declared beyond June 30, 2023 will be determined based on the floating rate index terms as described in the issuance documentation. (3) Dividends, if declared, will be paid quarterly at a rate per annum equal to 5.875% for each dividend period from the original issue date to, but excluding, July 1, 2024. From and including July 1, 2024, the dividend rate will change and reset every five years on July 1 at a rate equal to the five-year U.S. Treasury Rate plus 4.127% per annum. All series of Preferred Stock are redeemable at Synovus' option in whole or in part, from time to time, on the earliest redemption date or any subsequent reset date, or in whole but not in part, at any time within 90 days following a regulatory capital treatment event, in each case, at a redemption price equal to $25 per share, plus any declared and unpaid dividends, without accumulation of any undeclared dividends. All series of Preferred Stock have no preemptive or conversion rights. Except in limited circumstances, all series of Preferred Stock do not have any voting rights. Common Stock Repurchases of Common Stock During 2022, Synovus repurchased $13.0 million, or 281 thousand shares, of common stock through open market transactions under the share repurchase program announced on January 20, 2022. During 2021, Synovus repurchased $199.9 million, or 4.4 million shares, of common stock through open market transactions under the share repurchase program announced on January 26, 2021. During 2020, Synovus repurchased $16.2 million, or 450 thousand shares, of common stock through open market transactions under the share repurchase program announced on January 24, 2020. Accumulated Other Comprehensive Income (Loss) The following table illustrates activity within the balances in AOCI by component, and is shown for the years ended December 31, 2022, 2021, and 2020. Changes in Accumulated Other Comprehensive Income (Loss) by Component (Net of Income Taxes) (in thousands) Net Unrealized Gains (Losses) on Investment Securities Available for Sale (1) Net Unrealized Gains (Losses) on Cash Flow Hedges (1) Post-Retirement Unfunded Health Benefit Total Balance at December 31, 2019 $ 83,666 $ (18,487) $ 462 $ 65,641 Other comprehensive income (loss) before reclassifications 80,491 73,502 — 153,993 Amounts reclassified from accumulated other comprehensive income (loss) (58,488) (2,049) (462) (60,999) Net current period other comprehensive income (loss) 22,003 71,453 (462) 92,994 Balance at December 31, 2020 $ 105,669 $ 52,966 $ — $ 158,635 Other comprehensive income (loss) before reclassifications (174,246) (57,705) — (231,951) Amounts reclassified from accumulated other comprehensive income (loss) 597 (9,602) — (9,005) Net current period other comprehensive income (loss) (173,649) (67,307) — (240,956) Balance at December 31, 2021 $ (67,980) $ (14,341) $ — $ (82,321) Other comprehensive income (loss) before reclassifications (1,152,283) (225,715) — (1,377,998) Amounts reclassified from accumulated other comprehensive income (loss) — 18,202 — 18,202 Net current period other comprehensive income (loss) (1,152,283) (207,513) — (1,359,796) Balance at December 31, 2022 $ (1,220,263) $ (221,854) $ — $ (1,442,117) (1) For all periods presented, the ending balance in net unrealized gains (losses) on investment securities available for sale and cash flow hedges includes unrealized losses of $13.3 million and $12.1 million, respectively, related to residual tax effects remaining in OCI due to previously established deferred tax asset valuation allowances in 2010 and 2011. In accordance with ASC 740-20-45-11(b), under the portfolio approach, these unrealized losses are realized at the time the entire portfolio is sold or disposed.

Regulatory Capital

Regulatory Capital	12 Months Ended
	Dec. 31, 2022
Regulatory Capital Disclosure [Abstract]
Regulatory Capital	Note 10 - Regulatory Capital Synovus and Synovus Bank are each subject to regulatory capital requirements administered by the federal banking agencies under Basel III. Failure to meet minimum capital requirements can initiate certain mandatory, and possibly additional discretionary actions by regulators that, if undertaken, could have a direct material effect on the consolidated financial statements. Specific capital levels that involve quantitative measures of both on- and off-balance sheet items as calculated under regulatory capital guidelines must be met. Capital amounts and classification are also subject to qualitative judgments by the regulators about components, risk weightings, and other factors. Additionally, regulatory capital rules include a capital conservation buffer of 2.5% that is added on top of each of the minimum risk-based capital ratios in order to avoid restrictions on capital distributions and discretionary bonuses. Based on internal capital analyses and earnings projections, Synovus' and Synovus Bank’s capital positions are each adequate to meet regulatory minimum capital requirements inclusive of the capital conservation buffer. Synovus Bank is also required to maintain certain capital levels, and not be subject to any written agreement, order, capital directive, or prompt corrective action directive requiring it to meet and maintain a specific capital level for any capital measure, in order to be considered a well-capitalized institution as defined by federal prompt corrective action banking regulations. The following table summarizes regulatory capital information at December 31, 2022 and 2021 for Synovus and Synovus Bank. Actual Capital Minimum Requirement For Capital Adequacy (1) To Be Well-Capitalized Under Prompt Corrective Action Provisions (2) (dollars in thousands) 2022 2021 2022 2021 2022 2021 Synovus Financial Corp. CET1 capital $ 4,926,194 $ 4,388,618 $ 2,302,824 $ 2,079,435 N/A N/A Tier 1 risk-based capital 5,463,339 4,925,763 3,070,432 2,772,581 N/A N/A Total risk-based capital 6,415,681 5,827,196 4,093,909 3,696,774 N/A N/A CET1 capital ratio 9.63 % 9.50 % 4.50 % 4.50 % N/A N/A Tier 1 risk-based capital ratio 10.68 10.66 6.00 6.00 N/A N/A Total risk-based capital ratio 12.54 12.61 8.00 8.00 N/A N/A Leverage ratio 9.07 8.72 4.00 4.00 N/A N/A Synovus Bank CET1 capital $ 5,446,703 $ 4,998,698 $ 2,300,126 $ 2,076,515 $ 3,322,404 $ 2,999,410 Tier 1 risk-based capital 5,446,703 4,998,698 3,066,835 2,768,686 4,089,113 3,691,581 Total risk-based capital 6,079,152 5,587,757 4,089,113 3,691,581 5,111,391 4,614,477 CET1 capital ratio 10.66 % 10.83 % 4.50 % 4.50 % 6.50 % 6.50 % Tier 1 risk-based capital ratio 10.66 10.83 6.00 6.00 8.00 8.00 Total risk-based capital ratio 11.89 12.11 8.00 8.00 10.00 10.00 Leverage ratio 9.06 8.86 4.00 4.00 5.00 5.00 (1) The additional capital conservation buffer in effect is 2.5%. (2) The prompt corrective action provisions are applicable at the bank level only.

Net Income Per Common Share

Net Income Per Common Share	12 Months Ended
	Dec. 31, 2022
Earnings Per Share [Abstract]
Net Income Per Common Share	Note 11 - Net Income Per Common Share The following table displays a reconciliation of the information used in calculating basic and diluted net income per common share for the years ended December 31, 2022, 2021, and 2020. Diluted net income per common share incorporates the potential impact of contingently issuable shares, including awards which require future service as a condition of delivery of the underlying common stock. Years Ended December 31, (in thousands, except per share data) 2022 2021 2020 Net income $ 757,902 $ 760,467 $ 373,695 Less: Preferred stock dividends 33,163 33,163 33,163 Net income available to common shareholders $ 724,739 $ 727,304 $ 340,532 Weighted average common shares outstanding 145,364 147,041 147,415 Effect of dilutive outstanding equity-based awards, warrants, and earnout payments 1,117 1,454 795 Weighted average diluted common shares 146,481 148,495 148,210 Net income per common share, basic $ 4.99 $ 4.95 $ 2.31 Net income per common share, diluted $ 4.95 $ 4.90 $ 2.30 For both the years ended December 31, 2022, and 2021, there was 21 thousand of potentially dilutive shares related to stock options to purchase shares of common stock that were outstanding but were not included in the computation of diluted net income per common share because the effect would have been anti-dilutive. For the year ended December 31, 2020, there was 602 thousand of potentially dilutive shares related to stock options to purchase shares of common stock that were outstanding but were not included in the computation of diluted net income per common share because the effect would have been anti-dilutive.

Fair Value Accounting

Fair Value Accounting	12 Months Ended
	Dec. 31, 2022
Fair Value Disclosures [Abstract]
Fair Value Accounting	Note 12 - Fair Value Accounting Fair value accounting guidance defines fair value as the exchange price that would be received to sell an asset or paid to transfer a liability (an "exit price") in the principal or most advantageous market available to the entity in an orderly transaction between market participants, on the measurement date. See "Part II - Item 8. Financial Statements and Supplementary Data - Note 1 - Summary of Significant Accounting Policies" of this Report for a description of how fair value measurements are determined. Assets and Liabilities Measured at Fair Value on a Recurring Basis The following table presents all financial instruments measured at fair value on a recurring basis as of December 31, 2022 and 2021. December 31, 2022 December 31, 2021 (in thousands) Level 1 Level 2 Level 3 Total Assets and Liabilities at Fair Value Level 1 Level 2 Level 3 Total Assets and Liabilities at Fair Value Assets Trading securities: Mortgage-backed securities issued by U.S. Government agencies $ — $ — $ — $ — $ — $ 197 $ — $ 197 Collateralized mortgage obligations issued by U.S. Government sponsored enterprises — 2,991 — 2,991 — 671 — 671 Other mortgage-backed securities — 3,185 — 3,185 — — — — State and municipal securities — 48 — 48 — 560 — 560 Asset-backed securities — 2,071 — 2,071 — 6,963 — 6,963 Total trading securities $ — $ 8,295 $ — $ 8,295 $ — $ 8,391 $ — $ 8,391 Investment securities available for sale: U.S. Treasury securities $ 471,813 $ — $ — $ 471,813 $ 117,838 $ — $ — $ 117,838 U.S. Government agency securities — 48,798 — 48,798 — 54,201 — 54,201 Mortgage-backed securities issued by U.S. Government agencies — 792,749 — 792,749 — 779,633 — 779,633 Mortgage-backed securities issued by U.S. Government sponsored enterprises — 6,895,070 — 6,895,070 — 8,012,301 — 8,012,301 Collateralized mortgage obligations issued by U.S. Government agencies or sponsored enterprises — 655,127 — 655,127 — 939,623 — 939,623 Commercial mortgage-backed securities issued by U.S. Government agencies or sponsored enterprises — 805,945 — 805,945 — 481,744 — 481,744 Asset-backed securities — — — — — 514,188 — 514,188 Corporate debt securities and other debt securities — 8,601 — 8,601 — 18,801 — 18,801 Total investment securities available for sale $ 471,813 $ 9,206,290 $ — $ 9,678,103 $ 117,838 $ 10,800,491 $ — $ 10,918,329 Mortgage loans held for sale $ — $ 51,136 $ — $ 51,136 $ — $ 108,198 $ — $ 108,198 Other investments — — 11,172 11,172 — — 12,185 12,185 Mutual funds and mutual funds held in rabbi trusts 42,659 — — 42,659 43,657 — — 43,657 SBA loans servicing asset — — 2,354 2,354 — — 3,233 3,233 Derivative assets — 89,815 — 89,815 — 191,708 — 191,708 Liabilities Securities sold short $ 3,370 $ — $ — $ 3,370 $ — $ 200 $ — $ 200 Mutual fund held in rabbi trusts 27,944 — — 27,944 27,205 — — 27,205 Derivative liabilities — 339,227 3,453 342,680 — 95,067 3,535 98,602 Fair Value Option Synovus has elected the fair value option for mortgage loans held for sale primarily to ease the operational burden required to maintain hedge accounting for these loans. Synovus is still able to achieve effective economic hedges on mortgage loans held for sale without the time and expense needed to manage a hedge accounting program. The following table summarizes the difference between the fair value and the UPB of mortgage loans held for sale and the changes in fair value of these loans. An immaterial portion of these changes in fair value was attributable to instrument-specific credit risk. Years Ended December 31, (in thousands) 2022 2021 2020 Changes in fair value included in net income: Mortgage loans held for sale $ (1,541) $ (3,942) $ 3,400 Mortgage loans held for sale: Fair value 51,136 108,198 216,647 Unpaid principal balance 50,264 105,785 210,292 Fair value less aggregate unpaid principal balance $ 872 $ 2,413 $ 6,355 Fair Value Measurements Using Significant Unobservable Inputs (Level 3) During 2022 and 2021, Synovus did not have any transfers in or out of Level 3 in the fair value hierarchy. 2022 (in thousands) Other Investments SBA Loans Servicing Asset Visa Derivative Liability Beginning balance $ 12,185 $ 3,233 $ (3,535) Total gains (losses) realized/unrealized: Included in earnings (7,201) (2,012) (6,000) Additions 6,188 1,133 — Settlements — — 6,082 Ending balance $ 11,172 $ 2,354 $ (3,453) Total net gains (losses) for the year included in earnings attributable to the change in unrealized gains (losses) relating to assets and liabilities still held at December 31, 2022 $ (7,201) $ (460) $ (6,000) 2021 (in thousands) Investment Securities Available for Sale Other Investments SBA Loans Servicing Asset Earnout Liability Visa Derivative Liability Beginning balance $ 2,021 $ 1,021 $ 3,258 $ (5,677) $ (2,048) Total gains (losses) realized/unrealized: Included in earnings — 1,164 (1,339) (507) (2,656) Sales (2,021) — — — — Additions — 10,000 1,314 — — Settlements — — — 6,184 1,169 Ending balance $ — $ 12,185 $ 3,233 $ — $ (3,535) Total net gains (losses) for the year included in earnings attributable to the change in unrealized gains (losses) relating to assets and liabilities still held at December 31, 2021 $ — $ 1,164 $ — $ — $ (2,656) The table below provides an overview of the valuation techniques and significant unobservable inputs used in those techniques to measure financial instruments that are classified within Level 3 of the valuation hierarchy and are measured at fair value on a recurring basis. The range of sensitivities that management utilized in its fair value calculations is deemed acceptable in the industry with respect to the identified financial instruments. December 31, 2022 December 31, 2021 (dollars in thousands) Valuation Technique Significant Unobservable Input Level 3 Fair Value Rate/Range Level 3 Fair Value Rate/Range Assets (liabilities) measured at fair value on a recurring basis Other investments Individual analysis of each investee company Multiple factors, including but not limited to, current operations, financial condition, cash flows, evaluation of business management and financial plans, and recently executed financing transactions related to the investee companies $11,172 N/A $12,185 N/A SBA loans servicing asset Discounted cash flow analysis Discount rate 2,354 18.85% 14.73% 3,233 8.55% 18.50% Visa derivative liability Discounted cash flow analysis Estimated timing of resolution of Covered Litigation and future cumulative deposits to the litigation escrow for settlement of the Covered Litigation Conversion Ratio (3,453) 0-1.6 years (3Q2024) 1.5991 (3,535) 0-1.8 years (3Q 2023) 1.6181 Assets (Liabilities) Measured at Fair Value on a Non-recurring Basis Certain assets and liabilities are required to be measured at fair value on a non-recurring basis subsequent to their initial recognition. These assets and liabilities are not measured at fair value on an ongoing basis; however, they are subject to fair value adjustments in certain circumstances, such as when there is evidence of impairment. The following table presents items measured at fair value on a non-recurring basis as of the dates indicated for which there was a fair value adjustment. December 31, 2022 December 31, 2021 (in thousands) Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Loans (1) $ — $ — $ 19,410 $ 19,410 $ — $ — $ 19,482 $ 19,482 Other real estate — — — — — — 270 270 Other assets held for sale — — 7,548 7,548 — — 1,256 1,256 Years Ended December 31, (in thousands) 2022 2021 Location in Consolidated Statements of Income Loans (1) $ 7,098 $ 27,613 Provision for credit losses Other real estate — 120 Other operating expense Other assets held for sale 1,843 462 Other operating expense (1) Collateral-dependent loans that are written down to fair value of collateral. The table below provides an overview of the valuation techniques and significant unobservable inputs used in those techniques to measure financial instruments that are classified within Level 3 of the valuation hierarchy and are measured at fair value on a non-recurring basis. December 31, 2022 December 31, 2021 Valuation Technique Significant Unobservable Input Range (Weighted Average) (1) Range (Weighted Average) (1) Assets (liabilities) measured at fair value on a non-recurring basis Loans Third-party appraised value of collateral less estimated selling costs Discount to appraised value 0%-74% (21%) 0%-10% (7%) 0%-71% (48%) 0%-10% (7%) Other real estate Third-party appraised value of real estate less estimated selling costs Discount to appraised value N/A 0%-48% (24%) 0%-10%(7%) Other assets held for sale Third-party appraised value less estimated selling costs or BOV Discount to appraised value 0%-35% (13%) 0%-10% (7%) 0%-51% (20%) 0%-10% (7%) (1) The weighted average is the measure of central tendencies; it is not the value that management is using for the asset or liability. Fair Value of Financial Instruments The following table present s the carrying and estimated fair values of financial instruments at December 31, 2022 and 2021. The fair values represent management’s best estimates based on a range of methodologies and assumptions. See "Part II - Item 8. Financial Statements and Supplementary Data - Note 1 - Summary of Significant Accounting Policies" of this Report for a description of how fair value measurements are determined. December 31, 2022 (in thousands) Carrying Value Fair Value Level 1 Level 2 Level 3 Financial assets Total cash, cash equivalents, and restricted cash $ 1,977,780 $ 1,977,780 $ 1,977,780 $ — $ — Trading securities 8,295 8,295 — 8,295 — Investment securities available for sale 9,678,103 9,678,103 471,813 9,206,290 — Loans held for sale 391,502 391,085 — 51,136 339,949 Other investments 11,172 11,172 — — 11,172 Mutual funds and mutual funds held in rabbi trusts 42,659 42,659 42,659 — — Loans, net 43,272,929 42,192,295 — — 42,192,295 SBA loans servicing asset 2,354 2,354 — — 2,354 FRB and FHLB stock 308,321 308,321 — 308,321 — Derivative assets 89,815 89,815 — 89,815 — Financial liabilities Non-interest-bearing deposits $ 15,639,899 $ 15,639,899 $ — $ 15,639,899 $ — Non-time interest-bearing deposits 26,936,635 26,936,635 — 26,936,635 — Time deposits 6,295,025 6,260,315 — 6,260,315 — Total deposits $ 48,871,559 $ 48,836,849 $ — $ 48,836,849 $ — Federal funds purchased and securities sold under repurchase agreements 146,588 146,588 146,588 — — Securities sold short 3,370 3,370 3,370 — — Short-term FHLB advances 600,014 600,014 — 600,014 — Long-term debt 4,109,597 4,120,113 — 4,120,113 — Mutual fund held in rabbi trusts 27,944 27,944 27,944 — — Derivative liabilities 342,680 342,680 — 339,227 3,453 December 31, 2021 (in thousands) Carrying Value Fair Value Level 1 Level 2 Level 3 Financial assets Total cash, cash equivalents, and restricted cash $ 3,009,853 $ 3,009,853 $ 3,009,853 $ — $ — Trading securities 8,391 8,391 — 8,391 — Investment securities available for sale 10,918,329 10,918,329 117,838 10,800,491 — Loans held for sale 750,642 749,980 — 108,198 641,782 Other investments 12,185 12,185 — — 12,185 Mutual funds and mutual funds held in rabbi trusts 43,657 43,657 43,657 — — Loans, net 38,884,361 39,118,275 — — 39,118,275 SBA loans servicing asset 3,233 3,233 — — 3,233 FRB and FHLB stock 159,941 159,941 — 159,941 — Derivative assets 191,708 191,708 — 191,708 — Financial liabilities Non-interest-bearing deposits $ 16,392,653 $ 16,392,653 $ — $ 16,392,653 $ — Non-time interest-bearing deposits 28,917,148 28,917,148 — 28,917,148 — Time deposits 4,117,475 4,125,673 — 4,125,673 — Total deposits $ 49,427,276 $ 49,435,474 $ — $ 49,435,474 $ — Federal funds purchased and securities sold under repurchase agreements 264,133 264,133 264,133 — — Securities sold short 200 200 — 200 — Long-term debt 1,204,229 1,243,147 — 1,243,147 — Mutual fund held in rabbi trusts 27,205 27,205 27,205 — — Derivative liabilities 98,602 98,602 — 95,067 3,535

Derivative Instruments

Derivative Instruments	12 Months Ended
	Dec. 31, 2022
Summary of Derivative Instruments [Abstract]
Derivative Instruments	Note 13 - Derivative Instruments Synovus utilizes derivative instruments to manage its exposure to various types of interest rate risk, exposures related to liquidity and credit risk, and to facilitate client transactions. The primary types of derivative instruments utilized by Synovus consist of interest rate swaps, interest rate lock commitments made to prospective mortgage loan clients, commitments to sell fixed-rate mortgage loans, and foreign currency exchange forwards. Interest rate lock commitments represent derivative instruments since it is intended that such loans will be sold. Synov us also provides foreign currency exchange services, primarily forward contracts, with counterparties to allow commercial clients to mitigate exchange rate risk. Synovus covers its risk by entering into an offsetting foreign currency exchange forward contract. Synovus enters into risk participation agreements with financial institution counterparties where we are either a participant or a lead bank so that the risk of default on the interest rate swaps is shared. Synovus either pays or receives a fee depending on the participation type. Synovus is party to master netting arrangements with its dealer counterparties; however, Synovus does not offset assets and liabilities under these arrangements for financial statement presentation purposes. See "Part II - Item 8. Financial Statements and Supplementary Data - Note 1 - Summary of Significant Accounting Policies" of this Report for additional information regarding accounting policies for derivatives. Hedging Derivatives Cash flow hedge relationships mitigate exposure to the variability of future cash flows or other forecasted transactions. Synovus has entered into interest rate swap contracts to manage overall cash flow changes related to interest rate risk exposure on index-based variable rate commercial loans. The contracts effectively modify Synovus' exposure to interest rate risk by utilizing receive fixed/pay index-based variable rate interest rate swaps. For cash f low hedges, the effective portion of the gain or loss on the derivative instrument is reported initially as a component of accumulated other comprehensive income (loss), net of the tax impact, and subsequently reclassified into earnings when the hedged transaction affects earnings with the impacts recorded in the same income statement line item used to present the earnings effect of the hedged item. When a cash flow hedge relationship is discontinued but the hedged cash flows, or forecasted transactions, are still expected to occur, gains or losses that were accumulated in OCI are amortized into earnings over the same periods which the hedged transactions are still expected to affect earnings. If, however, it is probable the forecasted transactions will no longer occur, the remaining accumulated amounts in OCI for the impacted cash flow hedges are immediately recognized in earnings. Synovus recorded net unrealized gains (losses) of $(57.4) million, or $(43.4) million, after tax, in OCI during the year ended December 31, 2022 and $1.2 million, or $930 thousand, after-tax, in OCI, during the year ended December 31, 2021, related to terminated cash flow hedges, which are being recognized into earnings in conjunction with the effective terms of the original swaps through the third quarter of 2026. Synovus recognized pre-tax income of $3.8 million and $12.9 million, respectively, during the years ended December 31, 2022 and 2021 related to t he amortization o f terminated cash flow hedges. As of December 31, 2022, Synovus expects to reclassify into earnings approximately $165 million in pre-tax loss due to the receipt or payment of interest payments on all cash flow hedges within the next twelve months. Included in this amount is approximately $24 million in pre-tax loss related to the amortization of terminated cash flow hedges. As of December 31, 2022, the maximum length of time over which Synovus is hedging its exposure to the variability in future cash flows is through the first quarter of 2027. Fair value hedging relationships mitigate exposure to the change in fair value of an asset or liability. Synovus has entered into receive-fixed, pay-variable interest rate swap contracts to hedge the change in the fair value due to fluctuations in market interest rates for outstanding fixed-rate long-term debt and interest-bearing deposits. The changes in fair value of the fair value hedges are recorded through earnings with an offset against changes in the fair value of the hedged item within interest expense in the consolidated statements of income. All components of each derivative instrument’s gain (loss) are included in the assessment of hedge effectiveness. For derivative instruments that are not designated as hedging instruments, changes in the fair value of the derivatives are recognized in earnings immediately. Client Related Derivative Positions Synovus enters into interest rate swap agreements to facilitate the risk management strategies of certain commercial banking clients. Synovus typically mitigates this risk largely by entering into equal and offsetting interest rate swap agreements with highly rated counterparties. The interest rate swap agreements are free-standing derivatives and are recorded at fair value in other assets or other liabilities on Synovus' consolidated balance sheets. The credit risk to these clients is evaluated and included in the calculation of fair value. Fair value changes including credit-related adjustments are recorded as a component of capital markets income. Counterparty Credit Risk and Collateral Entering into derivative contracts potentially exposes Synovus to the risk of counterparties’ failure to fulfill their legal obligations, including, but not limited to, potential amounts due or payable under each derivative contract. Notional principal amounts are often used to express the volume of these transactions, but the amounts potentially subject to credit risk are much smaller. Synovus assesses the credit risk of its dealer counterparties by regularly monitoring publicly available credit rating information, evaluating other market indicators, and periodically reviewing detailed financials. Dealer collateral requirements are determined via risk-based policies and procedures and in accordance with existing agreements. Synovus seeks to minimize dealer credit risk by dealing with highly rated counterparties and by obtaining collateral for exposures above certain predetermined limits. Management closely monitors credit conditions within the client swap portfolio, which management deems to be of higher risk than dealer counterparties. Collateral is secured at origination and credit-related fair value adjustments are recorded against the asset value of the derivative as deemed necessary based upon an analysis, which includes consideration of the current asset value of the swap, client risk rating, collateral value, and client standing with regards to its swap contractual obligations and other related matters. Such asset values fluctuate based upon changes in interest rates regardless of changes in notional amounts and changes in client specific risk. Mortgage Derivatives Synovus originates first lien residential mortgage loans for sale into the secondary market. Mortgage loans are sold either individually or in a bulk sale by Synovus on a whole loan servicing-released basis to third-party servicing aggregators for potential conversion into mortgage-backed securities which can be traded in the secondary market or retained on their respective balance sheet. Synovus enters into interest rate lock commitments for residential mortgage loans which commits it to lend funds to a potential borrower at a specific interest rate and within a specified period of time. Interest rate lock commitments that relate to the origination of mortgage loans that, if originated, will be held for sale, are considered derivative financial instruments under applicable accounting guidance. Outstanding interest rate lock commitments expose Synovus to the risk that the price of the mortgage loans underlying the commitments may decline due to increases in mortgage interest rates from inception of the rate lock to the funding of the loan and the eventual commitment for sale into the secondary market. Forward commitments to sell primarily fixed-rate mortgage loans are entered into to reduce the exposure to market risk arising from potential changes in interest rates, which could affect the fair value of mortgage loans held for sale and outstanding interest rate lock commitments, which guarantee a certain interest rate if the loan is ultimately funded or granted by Synovus as a mortgage loan held for sale. The commitments to sell mortgage loans are at fixed prices and are scheduled to settle at specified dates that generally do not exceed 90 days. Collateral Requirements Certain derivative transactions have collateral requirements, both at the inception of the trade, and as the value of each derivative position changes. As of December 31, 2022 and 2021, Synovus had recorded the right to reclaim cash collateral of $66.8 million and $64.5 million, respectively. As of December 31, 2022 and 2021, Synovus had recorded the obligation to return cash collateral of $7.7 million and $0.0 million, respectively. For derivatives cleared through central clearing houses, the variation margin payments made are legally characterized as settlements of the derivatives. As a result, these variation margin payments are netted against the fair value of the respective derivative contracts on the consolidated balance sheets and related disclosures. The following table reflects the estimated fair value of derivative instruments included in other assets and other liabilities on the consolidated balance sheets along with their respective notional amounts on a gross basis. December 31, 2022 December 31, 2021 Fair Value Fair Value (in thousands) Notional Amount Derivative Assets Derivative Liabilities Notional Amount Derivative Assets Derivative Liabilities Derivatives in cash flow hedging relationships: Interest rate contracts $ 5,250,000 $ — $ 8,286 $ 3,600,000 $ 22,004 $ 20,395 Total derivatives designated as hedging instruments $ — $ 8,286 $ 22,004 $ 20,395 Derivatives in fair value hedging relationships: Interest rate contracts 2,230,232 $ — $ 8,093 $ — $ — $ — Total fair value hedges $ — $ 8,093 $ — $ — Total derivatives designated as hedging instruments $ — $ 16,379 $ 22,004 $ 20,395 Derivatives not designated: Interest rate contracts $ 10,276,754 $ 89,310 $ 322,329 $ 9,653,600 $ 167,560 $ 74,514 Mortgage derivatives - interest rate lock commitments 50,218 350 — 99,006 2,105 — Mortgage derivatives - forward commitments to sell fixed-rate mortgage loans 76,500 155 — 105,500 — 122 Risk participation agreements 635,891 — 3 374,214 — 36 Foreign exchange contracts 20,439 — 516 22,387 39 — Visa derivative — — 3,453 — — 3,535 Total derivatives not designated as hedging instruments $ 89,815 $ 326,301 $ 169,704 $ 78,207 The following table presents the effect of hedging derivative instruments on the consolidated statements of income and the total amounts for the respective line item affected for the years ended December 31, 2022, 2021, and 2020. 2022 Interest Income Interest Expense (in thousands) Loans, including fees Deposits Long-term debt Total interest income (expense) amounts presented in the consolidated statements of income $ 1,806,060 $ (187,232) $ (79,402) Gain (loss) on cash flow hedging relationships: (1) Interest rate contracts: Realized gains (losses) reclassified from AOCI, pre-tax, to interest income on loans $ (24,057) $ — $ — Pre-tax income (loss) recognized on cash flow hedges $ (24,057) $ — $ — Gain (loss) on fair value hedging relationships: Amounts related to interest settlements and amortization on derivatives $ — $ 1,516 $ (322) Recognized on derivatives — (24,227) (19,348) Recognized on hedged items — 24,227 19,348 Pre-tax income (loss) recognized on fair value hedges $ — $ 1,516 $ (322) 2021 Interest Income (in thousands) Loans, including fees Total interest income (expense) amounts presented in the consolidated statements of income $ 1,482,567 Gain (loss) on cash flow hedging relationships: (1) Interest rate contracts: Realized gains (losses) reclassified from AOCI, pre-tax, to interest income on loans 12,862 Pre-tax income (loss) recognized on cash flow hedges $ 12,862 2020 Interest Income (in thousands) Loans, including fees Total interest income (expense) amounts presented in the consolidated statements of income $ 1,600,462 Gain (loss) on cash flow hedging relationships: (1) Interest rate contracts: Realized gains (losses) reclassified from AOCI, pre-tax, to interest income on loans 2,765 Pre-tax income (loss) recognized on cash flow hedges $ 2,765 (1) See "Part II - Item 8. Financial Statements and Supplementary Data - Note 9 - Shareholders' Equity and Other Comprehensive Income" in this Report for additional information. The following table presents the carrying amount and associated cumulative basis adjustment related to the application of hedge accounting that is included in the carrying amount of the hedged assets/(liabilities) in fair value hedging relationships. December 31, 2022 December 31, 2021 Hedged Items Currently Designated Hedged Items Currently Designated (in thousands) Carrying Amount of Assets/(Liabilities) Hedge Accounting Basis Adjustment Carrying Amount of Assets/(Liabilities) Hedge Accounting Basis Adjustment Interest-bearing deposits $ (1,680,000) $ 24,227 $ — — Long-term debt (545,787) 19,348 — — The pre-tax effect of changes in fair value from derivative instruments not designated as hedging instruments on the consolidated statements of income for the years ended December 31, 2022, 2021 and 2020 is presented below. Gain (Loss) Recognized in Consolidated Statements of Income For The Years Ended December 31, (in thousands) Location in Consolidated Statements of Income 2022 2021 2020 Derivatives not designated as hedging instruments: Interest rate contracts (1) Capital markets income $ 1,570 $ 100 $ (777) Mortgage derivatives - interest rate lock commitments Mortgage banking income (1,756) (4,154) 4,969 Mortgage derivatives - forward commitments to sell fixed-rate mortgage loans Mortgage banking income 277 1,489 (1,443) Risk participation agreements Capital markets income 33 269 (213) Foreign exchange contracts Capital markets income (555) 39 — Visa derivative Other non-interest expense (6,000) (2,656) (890) Total derivatives not designated as hedging instruments $ (6,431) $ (4,913) $ 1,646 (1) Gain (loss) represents net fair value adjustments (including credit related adjustments) for client swaps. Additionally, losses related to termination of client swaps of $2.5 million

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2022
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Note 14 - Commitments and Contingencies In the normal course of business, Synovus enters into commitments to extend credit such as loan commitments and letters of credit to meet the financing needs of its clients. Synovus uses the same credit policies in making commitments and conditional obligations as it does for on-balance sheet instruments. Commitments to extend credit are agreements to lend to a client as long as there is no violation of any condition established in the contract. Commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. Synovus also has commitments to fund certain tax credits, CRA partnerships, and other investments. The contractual amount of these financial instruments represents Synovus' maximum credit risk should the counterparty draw upon the commitment, and should the counterparty subsequently fail to perform according to the terms of the contract. Since many of the commitments are expected to expire without being drawn upon, total commitment amounts do not necessarily represent future cash requirements. Additionally, certain commitments (primarily consumer) can generally be canceled by providing notice to the borrower. The ACL associated with unfunded commitments and letters of credit is recorded within other liabilities on the consolidated balance sheets. At December 31, 2022, the ACL for unfunded commitments was $57.5 million, compared to a reserve of $41.9 million at December 31, 2021. Additionally, an immaterial amount of unearned fees relating to letters of credit are recorded within other liabilities on the consolidated balance sheets. Synovus invests in certain LIHTC partnerships which are engaged in the development and operation of affordable multi-family housing pursuant to Section 42 of the Code. Additionally, Synovus invests in certain solar energy tax credit partnerships pursuant to Section 48 of the Code and certain new market tax credit partnerships pursuant to section 45D of the Code. Synovus typically acts as a limited partner in these investments and does not exert control over the operating or financial policies of the partnerships and as such, is not considered the primary beneficiary of the partnership. For certain of its LIHTC investments, Synovus provides financing during the construction and development of the properties and is at risk for the funded amount of its equity investment plus the outstanding amount of any construction loans in excess of the fair value of the collateral for the loan, but has no obligation to fund the operations or working capital of the partnerships and is not exposed to losses beyond Synovus’ investment. Synovus receives tax credits related to these investments which are subject to recapture by taxing authorities based on compliance provisions required to be met at the project level. Synovus also invests in CRA partnerships, including SBIC programs, and other investments. The SBIC is a program initiated by the SBA in 1958 to assist in the funding of small business loans. December 31, (in thousands) 2022 2021 Letters of credit (1) $ 220,622 $ 183,463 Commitments to fund commercial and industrial loans 9,970,733 9,595,793 Commitments to fund commercial real estate, construction, and land development loans 3,629,531 3,593,171 Commitments under home equity lines of credit 2,156,641 1,805,869 Unused credit card lines 461,443 473,582 Other loan commitments 742,976 604,353 Total letters of credit and unfunded lending commitments $ 17,181,946 $ 16,256,231 Tax credits, CRA partnerships, and other investments with a future funding commitment: Carrying amount included in other assets $ 488,944 $ 426,137 Amount of future funding commitments 283,212 250,733 Permanent and short-term construction loans and letter of credit commitments (2) 177,998 204,391 Funded portion of permanent and short-term loans and letters of credit (3) 234,166 104,315 (1) Represent the contractual amount net of risk participations purchased of approximately $25.7 million and $26.1 million at December 31, 2022 and December 31, 2021, respectively. (2) Represent the contractual amount net of risk participations of $4.7 million and $6.0 million at December 31, 2022 and December 31, 2021, respectively (3) Represent the contractual amount net of risk participations of $6.9 million and $3.0 million at December 31, 2022 and December 31, 2021, respectively. Merchant Services In accordance with credit and debit card association rules, Synovus provides merchant processing services for clients with a contractual arrangement under which certain sales and processing support are provided through an outside merchant services provider with Synovus owning the merchant contract relationship. In addition, Synovus sponsors various third-party MPS businesses that process credit and debit card transactions on behalf of merchants. In connection with these services, a liability may arise in the event of a billing dispute between the merchant and a cardholder that is ultimately resolved in the cardholder's favor. If the merchant defaults on its obligations, the cardholder, through its issuing bank, generally has until six months after the date of the transaction to present a chargeback to the MPS, which is primarily liable for any losses on covered transactions. However, if a sponsored MPS fails to meet its obligations, then Synovus, as the sponsor, could be held liable for the disputed amount. Synovus seeks to mitigate this risk through its contractual arrangements with the MPS and the merchants by withholding future settlements, retaining cash reserve accounts and/or obtaining other security. For the years ended December 31, 2022 and 2021, Synovus and the sponsored entities processed and settled $119.20 billion and $105.14 billion of transactions, respectively. Synovus covered chargebacks related to a particular sponsored MPS during 2019 and 2018 where the MPS’s cash reserve account was unavailable to support the chargebacks. The remaining amount, net of reserves, included in other assets and classified in N PAs, was $15.3 million a s of December 31, 2022 and December 31, 2021. While Synovus has contractual protections to mitigate against loss, repayment of the amounts owed to Synovus will depend in large part upon the continued financial viability and/or valuation of the MPS. Legal Proceedings Synovus and its subsidiaries are subject to various legal proceedings, claims and disputes that arise in the ordinary course of its business. Additionally, in the ordinary course of business, Synovus and its subsidiaries are subject to regulatory and governmental examinations, information gathering requests, inquiries and investigations. Synovus, like many other financial institutions, has been the target of legal actions and other proceedings asserting claims for damages and related relief for losses. These actions include mortgage loan and other loan put-back claims, claims and counterclaims asserted by individual borrowers related to their loans, allegations of violations of state and federal laws and regulations relating to banking practices, including putative class action matters. In addition to actual damages, if Synovus does not prevail in such asserted legal actions, credit-related litigation could result in additional write-downs or charge-offs of assets, which could adversely affect Synovus' results of operations during the period in which the write-down or charge-off were to occur. Synovus carefully examines and considers each legal matter, and, in those situations where Synovus determines that a particular legal matter presents loss contingencies that are both probable and reasonably estimable, Synovus establishes an appropriate reserve. An event is considered to be probable if the future event is likely to occur. While the final outcome of any legal proceeding is inherently uncertain, based on the information currently available, advice of counsel and available insurance coverage, management believes that the amounts accrued with respect to legal matters as of December 31, 2022 are adequate. The actual costs of resolving legal claims may be higher or lower than the amounts accrued.

Share-based Compensation and Ot

Share-based Compensation and Other Employment Benefit Plans	12 Months Ended
	Dec. 31, 2022
Share-Based Payment Arrangement [Abstract]
Share-based Compensation and Other Employment Benefit Plans	Note 15 - Share-based Compensation and Other Employment Benefit Plans General Description of Share-based Plans Synovus has a long-term incentive plan under which the Compensation and Human Capital Committee of the Board of Directors has the authority to grant share-based awards to Synovus employees. The 2021 Omnibus Plan authorized 5.8 million common share equivalents available for grants. Any restricted share units that are forfeited and options that expire unexercised will again become available for issuance under the 2021 Omnibus Plan. At December 31, 2022, Synovus had a total of 5.2 million common share equivalents of its authorized but unissued common stock reserved for future grants under the 2021 Omnibus Plan. Share-based Compensation Expense Total share-based compensation expense recognized for 2022, 2021, and 2020 is presented in the following table by its classification within total non-interest expense. Years Ended December 31, (in thousands) 2022 2021 2020 Salaries and other personnel expense $ 26,751 $ 26,957 $ 17,827 Other operating expense 1,153 838 814 Total share-based compensation expense included in non-interest expense $ 27,904 $ 27,795 $ 18,641 No share-based compensation costs have been capitalized for the years ended December 31, 2022, 2021, and 2020. As of December 31, 2022, total unrecognized compensation cost related to the unvested portion of share-based compensation arrangements involving shares of Synovus stock was $31.8 million. This cost is expected to be recognized over a weighted average remaining period of 1.84 years. Stock Options There were no stock option grants in 2022, 2021, or 2020. A summary of stock option activity and changes during the years ended December 31, 2022, 2021, and 2020 is presented below. Stock Options 2022 2021 2020 (in thousands, except per share data) Quantity Weighted-Average Exercise Price Quantity Weighted-Average Exercise Price Quantity Weighted-Average Exercise Price Outstanding at beginning of year 1,478 $ 22.71 2,401 $ 22.47 3,037 $ 22.74 Assumed in acquisition — — — — — — Options exercised (365) 20.27 (923) 22.07 (572) 22.67 Options forfeited/expired/canceled — — — — (64) 33.50 Options outstanding at end of year 1,113 $ 23.51 1,478 $ 22.71 2,401 $ 22.47 Options exercisable at end of year 1,113 $ 23.51 1,478 $ 22.71 2,401 $ 22.47 The aggregate intrinsic value for both outstanding and exercisable stock options at December 31, 2022 was $15.8 million with a weighted average remaining contractual life of 1.76 years. The intrinsic value of stock options exercised during the years ended December 31, 2022, 2021, and 2020 was $10.0 million, $21.3 million, and $5.3 million, respectively. Restricted Share Units and Performance Share Units Compensation expense is measured based on the grant date fair value of restricted share units and performance share units. The fair value of restricted share units and performance share units that do not contain market conditions is equal to the market price of common stock on the grant date. The fair value of performance share units, which include a market condition, was estimated on the date of grant using a Monte Carlo simulation model with the following weighted average assumptions: 2022 2021 2020 Risk-free interest rate 2.87 % 2.87 % 1.42 % Expected stock price volatility 57.2 56.1 25.4 Simulation period 2.9 years 2.9 years 3.0 years The stock price expected volatility was based on Synovus' historical volatility for grants in 2022, 2021 and 2020. The Monte Carlo model estimates fair value based on 100,000 simulations of future share price using a theoretical model of stock price behavior. Synovus granted performance share units, which included a market condition with respect to 50% of the award, to senior management during the years ended December 31, 2022, 2021, and 2020. The performance share units have a three-year service-based vesting component, a 50% weighted performance condition based on adjusted ROATCE, and a 50% weighted market condition based on Synovus' relative TSR. The number of performance share units that will ultimately vest ranges from 0% to 150% of a defined target based on Synovus' relative TSR and three-year weighted average adjusted ROATCE. A summary of restricted share units and performance share units outstanding and changes during the years ended December 31, 2022, 2021, and 2020 is presented below. Restricted Share Units Performance Share Units (in thousands, except per share data) Quantity Weighted-Average Grant Date Fair Value Quantity Weighted-Average Grant Date Fair Value Outstanding at December 31, 2019 817 $ 38.32 495 $ 40.85 Granted 822 32.42 204 37.74 Vested (384) 38.04 (214) 41.31 Forfeited (34) 35.97 (46) 39.03 Outstanding at December 31, 2020 1,221 34.50 439 39.37 Granted 599 42.31 141 42.94 Vested (482) 37.05 (58) 42.43 Forfeited (93) 31.41 — — Outstanding at December 31, 2021 1,245 37.00 522 37.59 Granted 608 48.14 29 54.76 Vested (571) 36.98 (45) 38.86 Forfeited (58) 42.21 (34) 43.06 Outstanding at December 31, 2022 1,224 $ 41.80 472 $ 44.11 The total fair value of restricted share units vested during 2022, 2021, and 2020 was $28.0 million, $19.8 million, and $13.4 million, respectively. The total fair value of performance share units vested during 2022, 2021, and 2020 was $2.2 million, $2.4 million, and $7.9 million, respectively. Other Employment Benefit Plans For the years ended December 31, 2022, 2021, and 2020, Synovus provided a 100% matching contribution on the first 5% of eligible employee 401(k) contributions for a total annual contribution of $23.0 million, $21.5 million , and $21.3 million, respectively. For the years ended December 31, 2022, 2021, and 2020, Synovus sponsored a stock purchase plan for directors and employees whereby Synovus made contributions equal to 15% of employee and director voluntary contributions, subject to certain maximum contribution limitations. The funds are used to purchase outstanding shares of Synovus common stock. Synovus recorded expense of $1.1 million

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2022
Income Tax Disclosure [Abstract]
Income Taxes	Note 16 - Income Taxes The components of income tax expense (benefit) included on the consolidated statements of income for the years ended December 31, 2022, 2021, and 2020 are presented below: (in thousands) 2022 2021 2020 Current Federal $ 167,255 $ 153,911 $ 187,741 State 28,152 29,982 9,421 Total current income tax expense 195,407 183,893 197,162 Deferred Federal 11,570 28,873 (90,777) State (702) 16,127 4,585 Total deferred income tax expense (benefit) 10,868 45,000 (86,192) Total income tax expense $ 206,275 $ 228,893 $ 110,970 Income tax expense as shown on the consolidated statements of income differed from the federal statutory rate for the years ended December 31, 2022, 2021, and 2020. A reconciliation of the differences is presented below: Years Ended December 31, (dollars in thousands) 2022 2021 2020 Income tax expense at statutory federal income tax rate $ 202,477 $ 207,765 $ 101,779 Increase (decrease) resulting from: State income tax expense, net of federal income tax benefit 21,981 38,452 11,168 Income not subject to tax (9,346) (10,455) (9,207) Low income housing tax credits and other tax benefits, net of amortization (6,336) (4,858) (2,611) FDIC premiums 5,517 4,111 4,744 General business tax credits (3,293) (3,727) (657) Excess tax benefit from share-based compensation (3,153) (3,084) 311 Executive compensation 2,152 1,096 1,501 Goodwill impairment — — 9,424 Other, net (3,724) (407) (5,482) Total income tax expense $ 206,275 $ 228,893 $ 110,970 Effective tax rate 21.4 % 23.1 % 22.9 % The components of the Company's deferred tax assets and liabilities at December 31, 2022 and 2021 are presented below: (in thousands) 2022 2021 Deferred tax assets Net unrealized losses on investment securities available for sale and cash flow hedges $ 455,744 $ 19,261 Allowance for credit losses 121,941 112,180 Lease liability 107,818 102,412 Employee benefits and deferred compensation 42,746 36,701 Net operating loss carryforwards 23,590 23,897 Tax credit carryforwards 14,553 15,870 Unrealized losses on fair value hedges 11,101 — Miscellaneous accrued expenses 5,125 3,870 Fair value of investment securities and loans 2,019 6,439 Non-performing loan interest 2,695 2,621 Deferred revenue — 14,616 Other 6,585 6,182 Total gross deferred tax assets 793,917 344,049 Less valuation allowance (19,114) (19,003) Total deferred tax assets 774,803 325,046 Deferred tax liabilities Right-of-use asset (102,945) (98,773) Excess tax over financial statement depreciation (23,762) (27,355) Purchase accounting intangibles (15,224) (14,820) Deferred loan fees (15,901) — Unrealized gain on hedged liabilities (11,101) — Prepaid expense (4,947) (4,631) Other properties held for sale (2,828) (5,345) Other (2,778) (5,071) Total gross deferred tax liabilities (179,486) (155,995) Net deferred tax assets $ 595,317 $ 169,051 Synovus believes the realization of net deferred tax assets (after valuation allowance) at December 31, 2022 is more likely than not based on its history of cumulative profitability as well as expectations of future taxable income, including reversals of taxable temporary differences, in the jurisdictions in which it operates. Synovus expects that a portion of its $23.6 million of federal and state NOLs, which have carryforward periods ending in tax years 2027 through 2042, will not be realized before their carryforward period lapses and the Company has accordingly established a valuation allowance in the amount of $19.1 million at December 31, 2022. State tax credit deferred tax assets at December 31, 2022 total $14.6 million and have expiration dates through the tax year 2032. Federal and state NOLs and tax credit carryforwards as of December 31, 2022 are summarized in the following table on a tax effected basis. Tax Carryforwards As of December 31, 2022 (in thousands) Expiration Dates Deferred Valuation Allowance Net Deferred Tax Asset Balance Net operating losses - federal 2027-2033 $ 18,969 $ (15,544) $ 3,425 Net operating losses - states (1) 2027-2042 4,621 (3,570) 1,051 Other credits - states 2023-2032 14,553 — 14,553 (1) Included in this balance are state NOLs that can be carried forward indefinitely and have no expiration date. Synovus is subject to income taxation in the United States and various state and local taxing jurisdictions. Generally, Synovus is no longer subject to income tax examinations by the IRS for years before 2019 and by state and local income tax authorities for years before 2015. Although Synovus is unable to determine the ultimate outcome of current and future examinations, Synovus believes that the resolution of these examinations will not have a material effect on the consolidated financial statements. A reconciliation of the beginning and ending amount of unrecognized income tax benefits is as follows (unrecognized state income tax benefits are not adjusted for the federal income tax impact). Years Ended December 31, (in thousands) 2022 2021 2020 Balance at January 1, $ 25,104 $ 20,250 $ 20,994 Additions based on income tax positions related to current year 649 3,754 461 Additions for income tax positions of prior years (1) 247 1,379 147 Reductions for income tax positions of prior years (1,215) (200) (327) Statute of limitation expirations (2,002) (79) (820) Settlements (383) — (205) Balance at December 31, $ 22,400 $ 25,104 $ 20,250 (1) Includes deferred tax benefits that could reduce future tax liabilities. Accrued interest and penalties related to unrecognized income tax benefits are recognized as a component of income tax expense, and totaled $3.2 million, $3.3 million, and $2.7 million as of December 31, 2022, 2021 and 2020, respectively. Unrecognized income tax benefits as of December 31, 2022, 2021 and 2020 that, if recognized, would affect the effective income tax rate totaled $20.9 million, $23.5 million and $19.1 million (net of the federal benefit on state income tax issues), respectively. It is reasonably possible that significant changes in the balance of unrecognized tax benefits may occur within the next 12 months. At this time, Synovus expects that $1.4 million of uncertain income tax positions will be either settled or resolved during the next twelve months.

Segment Reporting

Segment Reporting	12 Months Ended
	Dec. 31, 2022
Segment Reporting [Abstract]
Segment Reporting	Note 17 - Segment Reporting Synovus' business segments are based on the products and services provided or the clients served and reflect the manner in which financial information is evaluated by the chief operating decision maker. During the first quarter of 2022, Synovus reorganized its management reporting structure to separate the previous Community Banking segment into Consumer Banking and Community Banking segments. Accordingly, its operating segment reporting structure was also updated. Synovus now has four major reportable business segments: Wholesale Banking, Community Banking, Consumer Banking, and Financial Management Services with functional activities such as treasury, technology, operations, marketing, finance, enterprise risk, legal, human resources, corporate communications, executive management, among others, included in Treasury and Corporate Other. Business segment results are determined based upon Synovus' management reporting system, which assigns balance sheet and income statement items to each of the business segments. Certain assets, liabilities, revenue, and expense not allocated or attributable to a particular business segment are included in Treasury and Corporate Other. Synovus' third-party lending consumer loans and loans held for sale, PPP loans, as well as Corporate and Investment Banking (CIB) loans are included in Treasury and Corporate Other. The management accounting policies and processes utilized in compiling segment financial information are highly subjective and, unlike financial accounting, are not based on authoritative guidance similar to GAAP. As a result, reported segment results are not necessarily comparable with similar information reported by other financial institutions. The Wholesale Banking business segment serves primarily larger corporate clients and governmental clients by providing commercial lending, capital markets, and deposit services through specialty teams including middle market, CRE, senior housing, national accounts, premium finance, structured lending, healthcare, asset-based lending, public finance, restaurant services, and community investment capital. The Community Banking business segment primarily serves small and medium-sized commercial clients as well as individual private wealth clients using a relationship-based approach. The commercial component of this segment focuses on locally owned and operated businesses. Private wealth services are delivered to the individuals operating the businesses as well as other individuals in the communities in which the Community Bank operates. A comprehensive set of banking products are offered to the client set including a full suite of lending, payments, and depository products as well as financial planning services. The Consumer Banking business segment services individual and small business clients through its branch and ATM network, in addition to digital and telephone channels. This segment primarily provides individuals and small businesses with an array of comprehensive banking products and services including depository accounts, credit and debit cards, payment solutions, goal-based planning, home equity and other consumer loans, and small business lending solutions. The Financial Management Services business segment serves its clients by providing mortgage and trust services and also specializing in professional portfolio management for fixed-income securities, investment banking, the execution of securities transactions as a broker/dealer, asset management, financial planning, and family office services, as well as the provision of individual investment advice on equity and other securities. Synovus uses a centralized FTP methodology to attribute appropriate net interest income to the business segments. The intent of the FTP methodology is to transfer interest rate risk from the business segments by providing matched duration funding of assets and liabilities. The result is to centralize the financial impact, management, and reporting of interest rate risk in the Treasury and Corporate Other function where it can be centrally monitored and managed. Treasury and Corporate Other includes certain assets and/or liabilities managed within that function. Additionally, Treasury and Corporate Other also charges (credits) an internal cost of funds for assets held in (or pays for funding provided by) each business segment. The process for determining FTP is based on a number of factors and assumptions, including prevailing market interest rates, the expected lives of various assets and liabilities, and the Company's broader funding profile. The following tables present certain financial information for each reportable business segment for the years ended December 31, 2022, 2021, and 2020 and as of December 31, 2022 and 2021. The application and development of management reporting methodologies is a dynamic process and is subject to periodic enhancements. As these enhancements are made, financial results presented by each reportable business segment may be periodically revised. Loan and deposit transfers occur from time to time between reportable business segments primarily to maintain the migration of clients and relationship managers between segments. During the third quarter of 2022, public funds deposits (and related net interest income, FTP, and non-interest expense) in the Financial Management Services segment were transferred to the Wholesale Banking segment in order to maintain consistency so that all public funds deposits can be managed together in the same business segment. Prior periods have been adjusted accordingly. During the years ended December 31, 2022, 2021, and 2020 Treasury and Corporate Other's net interest income benefited from the recognition of PPP fees totaling $12.6 million, $79.2 million, and $46.0 million, respectively. During the year ended December 31, 2020, Synovus strategically repositioned the investment securities portfolio, which resulted in net gains of $78.9 million in the Treasury and Corporate Other segment. Additionally, during the year ended December 31, 2020, Synovus recognized a $44.9 million non-cash goodwill impairment charge representing all of the goodwill allocated to the Consumer Mortgage reporting unit (which is included in the FMS reportable segment) resulting from a combination of factors, including the extended duration of lower market valuations, high volumes in refinance activity that reduced mortgage yields, and the clarity around the FOMC's longer term policy actions designed to keep interest rates low. Year Ended December 31, 2022 (in thousands) Wholesale Banking Community Banking Consumer Banking Financial Management Services Treasury and Corporate Other Synovus Consolidated Net interest income $ 691,535 $ 412,660 $ 465,840 $ 69,539 $ 157,326 $ 1,796,900 Non-interest revenue 39,262 50,077 86,570 182,861 50,566 409,336 Non-interest expense 114,212 130,398 189,839 171,325 551,732 1,157,506 Pre-provision net revenue $ 616,585 $ 332,339 $ 362,571 $ 81,075 $ (343,840) $ 1,048,730 Year Ended December 31, 2021 (in thousands) Wholesale Banking Community Banking Consumer Banking Financial Management Services Treasury and Corporate Other Synovus Consolidated Net interest income $ 558,469 $ 399,261 $ 409,439 $ 78,647 $ 87,131 $ 1,532,947 Non-interest revenue 34,590 48,301 79,725 211,002 76,448 450,066 Non-interest expense 90,198 115,366 175,451 184,133 534,756 1,099,904 Pre-provision net revenue $ 502,861 $ 332,196 $ 313,713 $ 105,516 $ (371,177) $ 883,109 Year Ended December 31, 2020 (in thousands) Wholesale Banking Community Banking Consumer Banking Financial Management Services Treasury and Corporate Other Synovus Consolidated Net interest income $ 548,398 $ 403,535 $ 450,486 $ 79,116 $ 31,213 $ 1,512,748 Non-interest revenue 26,379 37,753 73,503 224,620 144,258 506,513 Non-interest expense 85,292 115,561 181,510 232,180 565,031 1,179,574 Pre-provision net revenue $ 489,485 $ 325,727 $ 342,479 $ 71,556 $ (389,560) $ 839,687 December 31, 2022 (dollars in thousands) Wholesale Banking Community Banking Consumer Banking Financial Management Services Treasury and Corporate Other Synovus Consolidated Loans, net of deferred fees and costs $ 25,865,667 $ 8,138,606 $ 2,933,504 $ 5,157,014 $ 1,621,562 $ 43,716,353 Deposits $ 12,942,732 $ 10,798,409 $ 18,561,521 $ 102,496 $ 6,466,401 $ 48,871,559 Full-time equivalent employees 337 624 1,503 768 1,795 5,027 December 31, 2021 (dollars in thousands) Wholesale Banking Community Banking Consumer Banking Financial Management Services Treasury and Corporate Other Synovus Consolidated Loans, net of deferred fees and costs $ 21,496,050 $ 8,231,451 $ 2,559,892 $ 4,994,494 $ 2,030,071 $ 39,311,958 Deposits $ 12,795,224 $ 12,557,631 $ 19,668,846 $ 401,969 $ 4,003,606 $ 49,427,276 Full-time equivalent employees 284 617 1,522 794 1,670 4,887

Condensed Financial Information

Condensed Financial Information Of Synovus Financial Corp. (Parent Company Only)	12 Months Ended
	Dec. 31, 2022
Condensed Financial Information Disclosure [Abstract]
Condensed Financial Information Of Synovus Financial Corp. (Parent Company Only)	Note 18 - Condensed Financial Information of Synovus Financial Corp. (Parent Company only) Condensed Balance Sheets December 31, (in thousands) 2022 2021 Assets Cash due from bank subsidiary $ 517,235 $ 389,071 Funds due from other depository institutions 7,250 9,277 Total cash, cash equivalents, and restricted cash 524,485 398,348 Investment in consolidated bank subsidiary, at equity 4,471,207 5,381,311 Investment in consolidated nonbank subsidiaries, at equity 92,349 69,712 Note receivable from bank subsidiary 100,000 100,000 Other assets 19,431 25,538 Total assets $ 5,207,472 $ 5,974,909 Liabilities and Shareholders' Equity Liabilities: Long-term debt $ 644,490 $ 607,334 Other liabilities 87,181 70,775 Total liabilities 731,671 678,109 Shareholders’ equity: Preferred stock 537,145 537,145 Common stock 170,141 169,384 Additional paid-in capital 3,920,346 3,894,109 Treasury stock (944,484) (931,497) Accumulated other comprehensive income (loss), net (1,442,117) (82,321) Retained earnings 2,234,770 1,709,980 Total shareholders’ equity 4,475,801 5,296,800 Total liabilities and shareholders’ equity $ 5,207,472 $ 5,974,909 Condensed Statements of Income Years Ended December 31, (in thousands) 2022 2021 2020 Income Cash dividends received from subsidiaries $ 350,000 $ 420,000 $ 547,500 Interest income 1,841 777 3,341 Other income (loss) (7,203) 1,070 4,966 Total income 344,638 421,847 555,807 Expense Interest expense 34,154 27,616 42,911 Other expense 17,804 10,300 10,584 Total expense 51,958 37,916 53,495 Income before income taxes and equity in undistributed income of subsidiaries 292,680 383,931 502,312 Allocated income tax benefit (16,667) (7,834) (12,202) Income before equity in undistributed income of subsidiaries 309,347 391,765 514,514 Equity in undistributed income (loss) of subsidiaries 448,555 368,702 (140,819) Net income 757,902 760,467 373,695 Dividends on preferred stock 33,163 33,163 33,163 Net income available to common shareholders $ 724,739 $ 727,304 $ 340,532 Condensed Statements of Comprehensive Income Years Ended December 31, 2022 2021 2020 (in thousands) Net of Tax Amount Net of Tax Amount Net of Tax Amount Net income $ 757,902 $ 760,467 $ 373,695 Other comprehensive gain (loss) of bank subsidiary (1,359,796) (240,956) 92,994 Other comprehensive income (loss) (1,359,796) (240,956) 92,994 Comprehensive income (loss) $ (601,894) $ 519,511 $ 466,689 Condensed Statements of Cash Flows Years Ended December 31, (in thousands) 2022 2021 2020 Operating Activities Net income $ 757,902 $ 760,467 $ 373,695 Adjustments to reconcile net income to net cash provided by (used in) operating activities: Equity in undistributed (income) loss of subsidiaries (448,555) (368,702) 140,819 Deferred income tax expense (benefit) 143 (7,296) 3,962 Net increase (decrease) in other liabilities 3,233 (2,082) 11,243 Net (increase) decrease in other assets 8,022 5,280 17,441 Other, net 825 928 (5,132) Net cash provided by (used in) operating activities 321,570 388,595 542,028 Investing Activities Proceeds from sales of equity securities — — 23,141 Increase in other investments (1,027) (10,000) — Net cash provided by (used in) investing activities (1,027) (10,000) 23,141 Financing Activities Dividends paid to common and preferred shareholders (229,311) (227,840) (223,130) Repurchase of common stock (12,987) (199,932) (16,246) Redemption of long-term debt (300,000) — (250,000) Proceeds from issuance of long-term debt, net 347,892 — — Other — (1,104) (1,552) Net cash provided by (used in) financing activities (194,406) (428,876) (490,928) Increase (decrease) in cash, cash equivalents, and restricted cash 126,137 (50,281) 74,241 Cash, cash equivalents, and restricted cash at beginning of year 398,348 448,629 374,388 Cash, cash equivalents, and restricted cash at end of year $ 524,485 $ 398,348 $ 448,629 See accompanying notes to the audited consolidated financial statements. For the years ended December 31, 2022, 2021, and 2020, the Parent Company paid income taxes of $173.9 million , $203.2 million, and $119.1 million, respectively. For the years ended December 31, 2022, 2021, and 2020, the Parent Comp any paid interest of $29.9 million, $27.3 million, and $42.0 million, respectively.

Subsequent Event

Subsequent Event	12 Months Ended
	Dec. 31, 2022
Subsequent Events [Abstract]
Subsequent Event	Note 19 - Subsequent Event On February 15, 2023, Synovus Bank issued $500 million aggregate principal amount of 5.625% Senior Bank Notes due 2028, and the Notes will mature on February 15, 2028. The Notes will bear interest at 5.625% per annum, payable semi-annually in arrears on each February 15 and August 15, beginning on August 15, 2023. Synovus Bank may not redeem the Notes prior to August 15, 2023. The redemption price for any redemption in whole or in part, at our option, on or after August 15, 2023, and prior to January 15, 2028, is equal to the greater of: (1) (a) the sum of the present values of the remaining scheduled payments of principal and interest thereon discounted to the redemption date (assuming the Notes matured on January 15, 2028) on a semi-annual basis (assuming a 360-day year consisting of twelve 30-day months) at the Treasury Rate plus 30 basis points less (b) interest accrued to the date of redemption, and (2) 100% of the principal amount of the Notes to be redeemed, plus, in either case, accrued and unpaid interest thereon to the redemption date. The redemption price for any redemption after January 15, 2028 is 100% of the principal amount of the Notes, plus accrued and unpaid interest thereon to the redemption date. The Notes are not redeemable at the option or election of holders.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2022
Accounting Policies [Abstract]
Principles of Consolidation and Basis of Presentation	Principles of Consolidation and Basis of Presentation The consolidated financial statements of Synovus include the accounts of the Parent Company and its consolidated subsidiaries. All intercompany balances and transactions have been eliminated in consolidation. The accounting and financial reporting policies of Synovus are in accordance with GAAP and conform to the accounting and reporting guidelines prescribed by bank regulatory authorities. Prior period consolidated financial statements are reclassified whenever necessary to conform to the current period presentation. No reclassifications of prior period balances were material to the consolidated financial statements unless specifically disclosed. The Company’s consolidated financial statements include all entities in which the Company has a controlling financial interest. A VIE for which Synovus or a subsidiary has been determined to be the primary beneficiary is also consolidated. The determination of whether a controlling financial interest exists is based on whether a single party has both the power to direct the activities of the VIE that most significantly impact the VIE's economic performance and the obligation to absorb the losses of the VIE or the right to receive benefits from the VIE that could potentially be significant to the VIE. Investments in VIEs where Synovus is not the primary beneficiary are accounted for using either the proportional amortization method or equity method of accounting. The Company uses the hypothetical liquidation at book value (HLBV) method for equity investments when the liquidation rights and priorities as defined by an equity investment agreement differ from what is reflected by the underlying percentage ownership interests.
Use of Estimates	Use of Estimates In preparing the consolidated financial statements in accordance with GAAP, management is required to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities as of the date of the respective consolidated balance sheets and the reported amounts of revenue and expense for the periods presented. Actual results could differ significantly from those estimates. Material estimates that are particularly susceptible to significant change relate to the determination of the ACL, estimates of fair value, income taxes, and contingent liabilities.
Business Combinations	Business Combinations Assets and liabilities acquired in business combinations are recorded at their acquisition date fair values, except as provided for by the applicable accounting guidance, with any excess recorded as goodwill. The results of operations of the acquired company are combined with Synovus’ results from the acquisition date forward. In accordance with ASC Topic 805, Business Combinations
Cash, Cash Equivalents, and Restricted Cash	Cash, Cash Equivalents, and Restricted CashCash and cash equivalents consist of cash and due from banks as well as interest-bearing funds with Federal Reserve Bank, interest earning deposits with banks, and federal funds sold and securities purchased under resale agreements, which are inclusive of any restricted cash and restricted cash equivalents. On March 15, 2020, the Federal Reserve Board announced that, effective March 26, 2020, it would reduce reserve requirement ratios to zero percent for all depository institutions.
Investment Securities Available for Sale	Investment Securities Available for Sale Investment securities available for sale are carried at fair value with unrealized gains and losses, net of the related tax effect, excluded from earnings and reported as a separate component of shareholders' equity within accumulated other comprehensive income (loss) until realized. For investment securities available for sale in an unrealized loss position, if Synovus has an intention to sell the security, or it is more likely than not that the security will be required to be sold prior to recovery, the security is written down to its fair value. The write down is charged against the ACL, if one was previously recorded, with any additional impairment recorded in earnings. If the aforementioned criteria are not met, Synovus performs a quarterly assessment of its available for sale debt securities to determine if the decline in fair value of a security below its amortized cost is related to credit losses or other factors. Management cons iders the extent to which fair value is less than amortized cost, the issuer of the security, any changes to the rating of the security by a rating agency, and adverse conditions specifically related to the security, among other factors. In assessing whether credit-related impairment exists, the present value of cash flows expected to be collected from the security is compared to the security's amortized cos t. If the present value of cash flows expected to be collected is less than the security's amortized cost basis, the difference is attributable to credit losses. For such differences, Synovus records an ACL with an offset to provision for credit losses. Synovus limits the ACL recorded to the amount the security's fair value is less than the amortized cost basis. Impairment losses related to other factors are recognized in other comprehensive income (loss). Interest income on securities available for sale is recorded on the accrual basis. Premiums and discounts are amortized or accreted over the life of the related security as an adjustment to yield using the effective interest method unless the premium is related to callable debt securities. For these securities, the amortization period is shortened to the earliest call date. Realized gains and losses for securities are included in investment securities gains (losses), net, on the consolidated statements of income and are derived using the specific identification method, on a trade date basis.
Mortgage Loans Held for Sale and Mortgage Banking Income	Mortgage Loans Held for Sale and Mortgage Banking Income Mortgage Loans Held for Sale Mortgage loans held for sale are initially measured at fair value under the fair value option election with subsequent changes in fair value recognized in mortgage banking income on the consolidated statements of income. Mortgage Banking Income Mortgage banking income consists primarily of origination and ancillary fees on mortgage loans originated for sale, and gains and losses from the sale of those loans. Mortgage loans are sold servicing released, without recourse or continuing involvement, and meet ASC Topic 860, Transfers and Servicing criteria for sale accounting. Other Loans Held for Sale Other loans held for sale are carried at the lower of cost or estimated fair value.
Loans Held for Investments and Interest Income	Loans Held for Investment and Interest Income Loans the Company has the intent and ability to hold for the foreseeable future are reported at principal amounts outstanding less amounts charged off, net of deferred fees and costs, and purchase premium/discount. Interest income is recognized on a level yield basis. Non-accrual Loans Loans on which the accrual of interest has been discontinued are designated as non-accrual loans. Accrual of interest is discontinued on loans when reasonable doubt exists as to the full collection of interest or principal, or when loans become contractually past due for 90 days or more as to either interest or principal, in accordance with the terms of the loan agreement, unless they are both well-secured and in the process of collection. When a loan is placed on non-accrual status, previously accrued and uncollected interest is reversed as an adjustment to interest income on loans. Interest payments received on non-accrual loans are generally recorded as a reduction of principal. As payments are received on non-accruing loans, interest income can be recognized on a cash basis; however, there must be an expectation of full repayment of the remaining recorded principal balance. The remaining portion of this payment is recorded as a reduction to principal. Loans are generally returned to accruing status when they are brought fully current with respect to interest and principal and when, in the judgment of management, the loans are estimated to be fully collectible as to both principal and interest, and the borrower has sustained repayment performance under the terms of the loan agreement for a reasonable period of time (generally six months). Troubled Debt Restructurings When borrowers are experiencing financial difficulties, Synovus may, in order to assist the borrowers in repaying the principal and interest owed to Synovus, make certain modifications to the borrower's loan. All loan modifications, renewals, and refinances are evaluated for TDR classification. The ALL on a TDR is measured using the same method as all other loans held for investment, except that the original interest rate, and not the rate specified with the restructuring, is used to discount the expected cash flows. Concessions provided by Synovus in a TDR are generally made in order to assist borrowers so that debt service is not interrupted and to mitigate the potential for loan losses. A number of factors are reviewed when a loan is renewed, refinanced, or modified, including cash flows, collateral values, guarantees, and loan structures. Concessions are primarily in the form of providing a below market interest rate given the borrower's credit risk to assist the borrower in managing cash flows, an extension of the maturity of the loan generally for less than one year, or a period of time generally less than one year with a reduction of required principal and/or interest payments (e.g., interest only for a period of time). Insignificant delays of principal and/or interest payments, or short-term deferrals, are generally not considered to be financial concessions. Further, it is generally Synovus' practice not to defer principal and/or interest for more than twelve months. Non-accruing TDRs may generally be returned to accrual status if there has been a period of performance, usually at least a six-month sustained period of repayment performance in accordance with the agreement. In the fiscal year subsequent to a loan's initial reporting as a TDR, a TDR for a borrower who is no longer experiencing financial difficulty (as evidenced by a period of performance), which yields a market rate of interest at the time of a renewal, and for which no principal was forgiven, is no longer considered a TDR. Concentrations of Credit Risk A substantial portion of the loan portfolio is secured by real estate in markets located throughout Alabama, Florida, Georgia, South Carolina, and Tennessee. Accordingly, the ultimate collectability of a substantial portion of the loan portfolio is susceptible to changes in market conditions in these areas. Loan Origination Fees and Costs Loan origination fees and direct loan origination costs are deferred and amortized to net interest income over the life of the related loan or over the commitment period as a yield adjustment.
Allowance for Credit Losses	Allowance for Credit Losses (ACL) Synovus calculates its ACL utilizing an expected credit loss methodology (referred to as CECL). CECL requires management’s estimate of credit losses over the full remaining expected life of loans and other financial instruments and for Synovus, applies to loans, unfunded loan commitments, accrued interest receivable, and available for sale debt securities. Allowance for Loan Losses (ALL) The ALL on loans held for investment represents management's estimate of credit losses expected over the life of the loans included in Synovus' existing loans held for investment portfolio. Changes to the allowance are recorded through a provision for credit losses and reduced by loans charged-off, net of recoveries. Determining the appropriateness of the allowance is complex and requires judgment by management about the effect of matters that are inherently uncertain. Accrued but uncollected interest is recorded in other assets on the consolidated balance sheets. In general, the Company does not record an ACL for accrued interest receivables as allowable per ASC 326-20-30-5A as Synovus' non-accrual policies result in the timely write-off of accrued but uncollected interest. Credit loss measurement Synovus' loan loss estimation process includes procedures to appropriately consider the unique characteristics of its loan portfolio segments (C&I, CRE and consumer). These segments are further disaggregated into loan classes, the level at which credit quality is assessed and monitored (as described in the subsequent sections). The ALL is measured on a collective (pool) basis when similar risk characteristics exist. Loans are grouped based upon the nature of the loan type and are further segregated based upon the methods for risk assessment. Credit loss assumptions are primarily estimated using a DCF model applied to the aforementioned loan groupings. This model calculates an expected life-of-loan loss percentage for each loan category by considering the forecasted PD, which is the probability that a borrower will default, adjusted for relevant forecasted macroeconomic factors comprising multiple weighted scenarios representing different plausible outcomes, and LGD, which is the estimate of the amount of net loss in the event of default. Expected credit losses are estimated over the contractual term of the loan, adjusted for expected prepayments and curtailments when appropriate. Management's determination of the contract term excludes expected extensions, renewals, and modifications unless either of the following applies: there is a reasonable expectation at the reporting date that a TDR will be executed with an individual borrower, or an extension or renewal option is included in the contract at the reporting date that is not unconditionally cancellable by Synovus. To the extent the lives of the loans in the portfolio extend beyond the period for which a reasonable and supportable forecast can be made (which is two years for Synovus), the Company reverts, on a straight-line basis back to the historical rates over a one year period. Life-of-loan loss percentages may also be adjusted, as necessary, for certain quantitative and qualitative factors that in management's judgment are necessary to reflect losses expected in the portfolio. These adjustments address inherent limitations in the quantitative model including uncertainty and limitations, among others. The above reflects the ALL estimation process for most commercial and consumer sub-pools. In some cases, Synovus may apply other acceptable loss rate models to smaller sub-pools. Loans that do not share risk characteristics are individually evaluated on a loan-by-loan basis with specific reserves, if any, recorded as appropriate. Specific reserves are determined based on two methods: discounted cash flow based upon the loan's contractual effective interest rate or at the fair value of the collateral, less costs to sell if the loan is collateral-dependent. For individually evaluated loans, under the DCF method, resulting expected credit losses are recorded as a specific reserve with a charge-off for any portion of the expected credit loss that is determined not to be recoverable. The reserve is reassessed each quarter and adjusted as appropriate based on changes in estimated cash flows. Additionally, where guarantors are determined to be a source of repayment, an assessment of the guarantee is required. This guarantee assessment would include, but not be limited to, factors such as type and feature of the guarantee, consideration for the guarantor's financial strength and capacity to service the loan in combination with the guarantor's other financial obligations as well as the guarantor's willingness to assist in servicing the loan. For individually evaluated loans, if the loan is collateral-dependent, then the fair value of the loan's collateral, less estimated selling costs, is compared to the loan's carrying amount to determine impairment. Fair value is estimated using appraisals performed by a certified or licensed appraiser. Management also considers other factors or recent developments, such as changes in absorption rates or market conditions at the time of valuation, selling costs and anticipated sales values, taking into account management's plans for disposition, which could result in adjustments to the fair value estimates indicated in the appraisals. The assumptions used in determining the amount of the impairment are subject to significant judgment. Use of different assumptions, for example, changes in the fair value of the collateral or management's plans for disposition could have a significant impact on the amount of impairment. Purchased Loans with Credit Deterioration Purchased loans are evaluated upon acquisition in order to determine if the loan, or pool of loans, has experienced more-than-insignificant deterioration in credit quality since origination or issuance. In the performance of this evaluation, Synovus considers migration of the credit quality of the loans at origination in comparison to the credit quality at acquisition. Purchased loans classified as PCD are recognized in accordance with ASC 326-20-30, whereby the amortized cost basis of the PCD asset is ‘grossed-up’ by the initial estimate of credit losses with an offset to the ALL. This acquisition date allowance has no income statement effect. Post-acquisition, any changes in estimates of expected credit losses are recorded through the provision for credit losses. Non-credit discounts or premiums are accreted or amortized, respectively into interest income using the interest method. The accounting treatment for purchased loans classified as non-PCD is the same as loans held for investment as detailed in the above section. Allowance for Credit Losses on Off-balance-sheet Credit Exposures Synovus maintains a separate ACL for off-balance-sheet credit exposures, including unfunded loan commitments, unless the associated obligation is unconditionally cancellable by the Company. This allowance is included in other liabilities on the consolidated balance sheets with associated expense recognized as a component of the provision for credit losses on the consolidated statements of income. The reserve for off-balance-sheet credit exposures considers the likelihood that funding will occur and estimates the expected credit losses on resulting commitments expected to be funded over their estimated life using the estimated loss rates on loans held for investment. Commercial Loans - Risk Ratings Synovus utilizes two primary methods for risk assessment of the commercial loan portfolio: SRR Assessment and DRR Assessment. DRR is a statistical model approach to risk rating that includes a PD and a LGD. The SRR model is an expert judgment based model that results in a blended (i.e. single) rating. The single and dual risk ratings are based on the borrowers' credit risk profile, considering factors such as debt service history, current and estimated prospective cash flow information, collateral supporting the credit, source of repayment as well as other variables, as appropriate. Each loan is assigned a risk rating during its initial approval process. Commercial loans include classifications of pass, special mention, substandard, doubtful, and loss consistent with bank regulatory classifications. The loan rating (for both SRR and DRR loans) is subject to approvals from other members of management, regional credit and/or loan committees depending on the size of the loan and credit attributes. Loan ratings are regularly re-evaluated based upon annual scheduled credit reviews or on a more frequent basis if determined prudent by management. Additionally, an independent loan review function evaluates Synovus' risk rating processes on a continuous basis. The primary determinants of the risk ratings for commercial loans are the reliability of the primary source of repayment and the borrower's expected performance. Expected performance is based upon a full analysis of the borrower's historical financial results, current financial strength and future prospects, which includes any external drivers. Consumer Loans – Risk Ratings
Transfers of Financial Assets	Transfers of Financial Assets Transfers of financial assets in which Synovus has surrendered control over the transferred assets are accounted for as sales. Control over transferred assets is considered to be surrendered when 1) the assets have been legally isolated from Synovus or any consolidated affiliates, even in bankruptcy or other receivership, 2) the transferee has the right to pledge or exchange the assets with no conditions that constrain the transferee and provide more than a trivial benefit to Synovus, and 3) Synovus does not maintain effective control over the transferred assets. If the transfer is accounted for as a sale, the transferred assets are derecognized from the balance sheet and a gain or loss on sale is recognized on the consolidated statements of income. If the sale criteria are not met, the transfer is accounted for as a secured borrowing and the transferred assets remain on Synovus' consolidated balance sheets and the proceeds from the transaction are recognized as a liability.
Cash Surrender Value of Bank-Owned Life Insurance	Cash Surrender Value of Bank-Owned Life Insurance Investments in bank-owned life insurance policies on certain current and former officers and employees of Synovus are recorded at the net realizable value of the policies. Net realizable value is the cash surrender value of the policies less any applicable surrender charges and any policy loans. Synovus has not borrowed against the cash surrender value of these policies. Changes in the cash surrender value of the policies as well as proceeds from insurance benefits are recorded in income from bank-owned life insurance on the consolidated statements of income.
Premises, Equipment and Software	Premises, Equipment and Software Premises, equipment and software including bank-owned branch locations and leasehold improvements are reported at cost, less accumulated depreciation and amortization, which are computed using the straight-line method over the estimated useful lives of the related assets. Buildings and improvements are depreciated over an average of 10 to 40 years, while furniture, equipment, and software are depreciated and amortized over a range of 3 to 10 years. Synovus capitalizes certain costs associated with the acquisition or development of internal-use software. Once the software is ready for its intended use, these costs are amortized on a straight-line basis over the software’s expected useful life over a range of the lesser of contract terms or 3 to 7 years. Leasehold improvements are depreciated over the shorter of the estimated useful life or the remainder of the lease term. Synovus reviews long-lived assets, such as premises and equipment, for impairment whenever events and circumstances indicate that the carrying amount of an asset may not be recoverable. Maintenance and repairs are charged to non-interest expense and improvements that extend the useful life of the asset are capitalized to the asset's carrying value and depreciated.
Goodwill and Other Intangible Assets	Goodwill and Other Intangible Assets Goodwill represents the excess purchase price over the fair value of identifiable net assets of acquired businesses. Goodwill is tested for impairment at the reporting unit level, equivalent to a business segment or one level below. Synovus performs its annual evaluation of goodwill impairment during the fourth quarter of each year and as events occur or circumstances change that would more likely than not reduce the fair value of a reporting unit below its carrying amount. Refer to "Part II - Item 8. Financial Statements and Supplementary Data - Note 5 - Goodwill and Other Intangible Assets" of this Report for details of the evaluation. Other intangible assets relate primarily to a core deposit intangible and borrower relationships resulting from business acquisitions. The core deposit intangible is amortized over its estimated useful life of approximately ten years utilizing an accelerated method. The remaining intangible assets are amortized using straight line methods based on the remaining lives of the assets with amortization periods ranging from eight
Segment Disclosure	Segment Disclosures ASC Topic 280, Segment Reporting , requires information be reported about a company’s operating segments using a “management approach.” Reportable segments are identified as those revenue-producing components for which discrete financial information is produced internally and which are subject to evaluation by the chief operating decision maker in making resource allocation decisions. Based on this guidance, Synovus identified four major reportable business segments: Community Banking, Wholesale Banking, Consumer Banking, and Financial Management Services (FMS), with functional activities such as treasury, technology, operations, marketing, finance, enterprise risk, legal, human resources, corporate communications, executive management, among others, included in Treasury and Corporate Other. Refer to "Part II - Item 8. Financial Statements and Supplementary Data - Note 17 - Segment Reporting" of this Report for additional details. The application and development of management reporting methodologies is a dynamic process and is subject to periodic enhancements. As these enhancements are made, financial results presented by each reportable segment may be periodically revised.
Other Assets	Other Assets Other assets include net deferred tax assets, investments in tax credits and CRA partnerships, ROU assets, FRB and FHLB stock, accrued interest receivable, accounts receivable, derivative asset positions, prepaid expense, other investments, and other balances as shown in "Part II - Item 8. Financial Statements and Supplementary Data - Note 6 - Other Assets" of this Report.
Derivative Instruments	Derivative Instruments Synovus’ risk management policies emphasize the management of interest rate risk within acceptable guidelines. Synovus’ objective in maintaining these policies is to limit volatility in net interest income arising from changes in interest rates. Risks to be managed include both fair value and cash flow risks. Utilization of derivative financial instruments provides a valuable tool to assist in the management of these risks. All derivative instruments are recorded on the consolidated balance sheets at their respective fair values, net of variation margin payments, as components of other assets and other liabilities. The accounting for changes in fair value (i.e., unrealized gains or losses) of a derivative instrument depends on whether it qualifies and has been designated as part of a hedging relationship. Synovus formally assesses, both at the hedge’s inception and on an ongoing basis, whether the derivative instruments that are used are highly effective in offsetting changes in fair values or cash flows of the hedged items. Fair value hedges - If the hedged exposure is a fair value exposure, the unrealized gain or loss on the derivative instrument is recognized in earnings in the period of change, in the same income statement line as the offsetting unrealized loss or gain on the hedged item attributable to the risk being hedged. When a fair value hedge is discontinued, the cumulative basis adjustments related to the hedged asset or liability are amortized to earnings in the same manner as other components of the carrying amount of that asset of liability. Cash flow hedges - If the hedged exposure is a cash flow exposure, the effective portion of the gain or loss on the derivative instrument is reported initially as a component of accumulated other comprehensive income (loss), net of the tax impact, and subsequently reclassified into earnings when the hedged transaction affects earnings with the impacts recorded in the same income statement line item used to present the earnings effect of the hedged item. When a cash flow hedge is discontinued but the hedged cash flows or forecasted transactions are still expected to occur, gains or losses that were accumulated in other comprehensive income (loss) are amortized into earnings over the same periods which the hedged transactions are still expected to affect earnings. If, however, it is probable the forecasted transactions will no longer occur, the accumulated amounts in OCI at the de-designation date are immediately recognized in earnings. If the derivative instrument is not designated as a hedge, the gain or loss on the derivative instrument is recognized in earnings as a component of non-interest revenue or other non-interest expense on the consolidated statements of income in the period of change. Synovus also holds derivative instruments, which consist of interest rate lock agreements related to expected funding of fixed-rate mortgage loans to clients (interest rate lock commitments) and forward commitments to sell mortgage-backed securities and individual fixed-rate mortgage loans. Synovus’ objective in obtaining the forward commitments is to mitigate the interest rate risk associated with the interest rate lock commitments and the mortgage loans that are held for sale. Both the interest rate lock commitments and the forward commitments are reported at fair value, with adjustments recorded in current period earnings in mortgage banking income. Synovus also enters into interest rate swap agreements to facilitate the risk management strategies of certain commercial banking clients. Synovus mitigates this risk by entering into equal and offsetting interest rate swap agreements with highly rated third-party financial institutions. Synovus also provides foreign currency exchange services, primarily forward contracts, with counterparties to allow commercial clients to mitigate exchange rate risk. Synovus covers its risk by entering into an offsetting foreign currency exchange forward contract. The interest rate swap agreements are free-standing derivatives and are recorded at fair value with any unrealized gain or loss recorded in current period earnings in non-interest revenue. These instruments, and their offsetting positions, are recorded in other assets and other liabilities on the consolidated balance sheets. Visa Derivative - In conjunction with the sale of Class B shares of common stock issued by Visa to Synovus as a Visa USA member, Synovus entered into a derivative contract with the purchaser, which provides for settlements between the parties based upon a change in the ratio for conversion of Visa Class B shares to Visa Class A shares. 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 litigation escrow is funded by proceeds from Visa’s conversion of Class B shares.
Non-interest Revenue	Non-interest Revenue Synovus' contracts with clients generally do not contain terms that require significant judgment to determine the amount of revenue to recognize. Synovus' policies for recognizing non-interest revenue within the scope of ASC Topic 606, Revenue from Contracts with Customers , including the nature and timing of such revenue streams, are included below. Service Charges on Deposit Accounts : Revenue from service charges on deposit accounts is earned through cash management, wire transfer, and other deposit-related services, as well as overdraft, NSF, account management and other deposit-related fees. Revenue is recognized for these services either over time, corresponding with deposit accounts' monthly cycle, or at a point in time for transaction-related services and fees. Payment for service charges on deposit accounts is primarily received immediately or in the following month through a direct charge to clients' accounts. Fiduciary and Asset Management Fees : Fiduciary and asset management fees are primarily comprised of fees earned from the management and administration of trusts and other client assets. Synovus' performance obligation is generally satisfied over time and the resulting fees are recognized monthly, based upon the month-end market value of the assets under management and the applicable fee rate. Payment is generally received a few days after month-end through a direct charge to clients' accounts. Synovus does not earn performance-based incentives. Card Fees : Card fees consist primarily of interchange fees from consumer credit and debit cards processed by card association networks, as well as merchant discounts, and other card-related services. Interchange rates are generally set by the credit card associations and based on purchase volumes and other factors. Interchange fees and merchant discounts are recognized concurrently with the delivery of service on a daily basis as transactions occur. Payment is typically received immediately or in the following month. Card fees are reported net of certain associated expense items including loyalty program expense and network expense. Brokerage Revenue : Brokerage revenue consists primarily of commissions. Additionally, brokerage revenue includes advisory fees earned from the management of client assets. Transactional revenues are based on the size and number of transactions executed at the client's direction and are generally recognized on the trade date with payment received on the settlement date. Advisory fees for brokerage services are recognized and collected monthly and are based upon the month-end market value of the assets under management at a rate predetermined in the contract. Capital Markets Income (partially within the scope of ASC Topic 606) : Investment banking income, a component of capital markets income, is comprised primarily of securities underwriting fees and remarketing fees. Synovus assists corporate clients in raising capital by offering equity or debt securities to potential investors. The transaction fees are based on a percentage of the total transaction amount. The underwriting and remarketing fees are recognized on the trade date when the securities are sold to third-party investors with payment received on the settlement date. Insurance Revenue (included in other non-interest revenue on the consolidated statements of income) : Insurance revenue primarily consists of commissions received on annuity and life product sales. The commissions are recognized as revenue when the client executes an insurance policy with the insurance carrier. In some cases, Synovus receives payment of trailing commissions each year when the client pays its annual premium.
Income Taxes	Income Taxes Synovus is a domestic corporation that files a consolidated federal income tax return with its wholly-owned subsidiaries and files state income tax returns on a consolidated or separate entity basis with the various taxing jurisdictions based on its taxable presence. The current income tax payable or receivable is an estimate of the amounts currently owed to or due from taxing authorities in which Synovus conducts business. Current income taxes payable also reflects changes in liabilities associated with uncertain tax positions reported in tax returns for the current and/or prior years. Synovus uses the asset and liability method to account for future income taxes expected to be paid or received (i.e., deferred income taxes). Under this method, deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement (GAAP) carrying amounts of existing assets and liabilities and their respective tax bases, including operating losses and tax credit carryforwards. The deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in income tax rates is recognized in income in the period that includes the enactment date. A valuation allowance is required for deferred tax assets if, based on available evidence, it is more likely than not that all or some portion of the asset will not be realized. In making this assessment, all sources of taxable income available to realize the deferred tax asset are considered, including taxable income in prior carryback years, future reversals of existing temporary differences, tax planning strategies, and future taxable income exclusive of reversing temporary differences and carryforwards. The predictability that future taxable income, exclusive of reversing temporary differences, will occur is the most subjective of these four sources. Changes in the valuation allowance are recorded through income tax expense. Significant estimates used in accounting for income taxes relate to the valuation allowance for deferred tax assets, estimates of the realizability of income tax credits, utilization of NOLs, the determination of taxable income, and the determination of temporary differences between book and tax bases. Synovus regularly evaluates its material tax positions for recognizability in its financial statements. Each tax position is evaluated under the presumption that all positions will be examined and that tax authorities will have full knowledge of all relevant information, and whether a position can be recognized is based solely on the technical merits of the position. Synovus performs a cumulative probability analysis and recognizes tax benefits where there is a greater than fifty percent likelihood of the position being upheld. If, upon this evaluation, the tax benefits of a transaction do not meet this ‘more likely than not’ standard, Synovus will accrue a tax liability for the uncertain tax position or reduce a deferred tax asset for the expected tax impact of the transaction. Events and circumstances may alter the estimates and assumptions used in the analysis of its income tax positions and, accordingly, Synovus' effective tax rate may fluctuate in the future. Synovus recognizes accrued interest and penalties related to uncertain tax positions as a component of income tax expense.
Share-based Compensation	Share-based Compensation Synovus has a long-term incentive plan under which the Compensation and Human Capital Committee of the Board of Directors has the authority to grant share-based awards to Synovus employees. The Plan permits grants of share-based compensation including stock options, restricted share units, and performance share units. The grants generally include a service-based vesting period of three years. Restricted share units are primarily equity-based but certain specific grants may be cash settled as well. When cash settled awards are granted, they are classified as a liability and revalued quarterly. Performance share units are granted with a defined target level and are compared to required market and performance metrics to determine adjustments to compensation expense. Synovus has historically issued new shares to satisfy share option exercises and share unit conversions. Dividend equivalents are paid on outstanding restricted share units and performance share units in the form of additional restricted share units that vest over the same vesting period or the vesting period left on the original restricted share unit grant. Compensation expense is measured based on the grant date fair value of restricted share units and performance share units. Synovus' share-based compensation costs associated with employee grants are recorded as a component of salaries and other personnel expense on the consolidated statements of income. As compensation expense is recognized, a deferred tax asset is recorded that represents an estimate of the future tax deduction from exercise or release of restrictions. At the time awards are exercised, cancelled, expire or restrictions are released, Synovus recognizes an adjustment to income tax expense for the difference between the previously estimated tax deduction and the actual tax deduction realized.
Earnings Per Share	Earnings per Share Basic net income per common share is computed by dividing net income available to common shareholders by the average common shares outstanding for the period. Diluted net income per common share reflects the dilution that could occur if securities or other contracts to issue common stock were exercised or converted. The dilutive effect of outstanding options and restricted share units is reflected in diluted net income per common share, unless the impact is anti-dilutive, by application of the treasury stock method.
Share Repurchases	Share Repurchases Common stock repurchases are recorded at cost. At the date of repurchase, shareholders' equity is reduced by the repurchase price and includes commissions and other transaction expenses that arise from the repurchases. If treasury shares are subsequently reissued, treasury stock is reduced by the cost of such stock with differences between cost and the re-issuance date fair value recorded in additional paid-in capital or retained earnings, as applicable.
Fair Value Measurements and Disclosures	Fair Value Measurements and Disclosures Synovus carries various assets and liabilities at fair value based on the fair value accounting guidance under ASC Topic 820, Fair Value Measurement, and ASC Topic 825, Financial Instruments . Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability (an “exit price”) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. Fair Value Hierarchy Synovus determines the fair value of its financial instruments based on the fair value hierarchy, which requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. A financial instrument’s categorization within the valuation hierarchy is based upon the lowest level of input that is significant to the financial instrument's fair value measurement in its entirety. There are three levels of inputs that may be used to measure fair value. The three levels of inputs of the valuation hierarchy are defined below: Level 1 Quoted prices (unadjusted) in active markets for identical assets and liabilities for the instrument or security to be valued. Level 2 Observable inputs other than Level 1 quoted prices, such as quoted prices for similar assets and liabilities in active markets, quoted prices in markets that are not active or model-based valuation techniques for which all significant assumptions are derived principally from or corroborated by observable market data. Level 3 Unobservable inputs that are supported by little, if any, market activity for the asset or liability. Valuation Methodology by Instrument - Recurring Basis The following is a description of the valuation methodologies used for the major categories of financial assets and liabilities measured at fair value on a recurring basis. Investment Securities Available for Sale and Trading Securities The fair values of investment securities available for sale and trading securities are primarily based on actively traded markets where prices are based on either quoted market prices or observed transactions. Management employs independent third-party pricing services to provide fair value estimates for Synovus' investment securities available for sale and trading securities. Fair values for fixed income investment securities are typically determined based upon quoted market prices, and/or inputs that are observable in the market, either directly or indirectly, for substantially similar securities. Level 1 securities are typically exchange-quoted prices and include financial instruments such as U.S. Treasury securities and marketable equity securities. Level 2 securities are typically matrix-priced by the third-party pricing service to calculate the fair value. Such fair value measurements consider observable data such as market spreads, cash flows, yield curves, live trading levels, trade execution data, market consensus prepayments speeds, credit information, and the respective terms and conditions for debt instruments. The types of securities classified as Level 2 within the valuation hierarchy primarily consist of collateralized mortgage obligations, mortgage-backed securities, debt securities of GSEs and agencies, corporate debt, asset-backed securities, and state and municipal securities. Management uses various validation procedures to confirm the prices received from pricing services are reasonable. Such validation procedures include reference to market quotes and a review of valuations and trade activity of comparable securities. Consideration is given to the nature of the quotes (e.g., indicative or firm) and the relationship of recently evidenced market activity to the prices provided by the third-party pricing service. Further, management also employs the services of an additional independent pricing firm as a means to verify and confirm the fair values of the primary independent pricing firms. When there is limited activity or less transparency around inputs to valuation, Synovus develops valuations based on assumptions that are not readily observable in the marketplace; these securities are classified as Level 3 within the valuation hierarchy. Mortgage Loans Held for Sale Synovus elected to apply the fair value option for mortgage loans originated with the intent to sell to investors in the secondary market. When loans are not committed to an investor at a set price, fair value is derived from a hypothetical bulk sale model using current market pricing indicators. A best execution valuation model is used for loan pricing for similar assets based upon forward settlements of a pool of loans of similar coupon, maturity, product, and credit attributes. The inputs to the model are continuously updated with available market and historical data. As the loans are sold in the secondary market and primarily used as collateral for securitizations, the valuation model methodology attempts to reflect the pricing execution available to Synovus’ principal market. Mortgage loans held for sale are classified within Level 2 of the valuation hierarchy. Other investments Funds invested in privately held companies are classified as Level 3 and the estimated fair value of the company is the estimated fair value as an exit price the fund would receive if it were to sell the company in the marketplace. The fair value of the fund's underlying investments is estimated through the use of valuation models, such as option pricing or a discounted cash flow model. Synovus typically sells shares in any investment after initial public offering (IPO) lock-up periods have ended. Mutual Funds Mutual funds (including those held in rabbi trusts) primarily invest in equity and fixed income securities. Shares of mutual funds are valued based on quoted market prices and are therefore classified within Level 1 of the fair value hierarchy. Derivative Assets and Liabilities Fair values of interest rate lock commitments and forward commitments are estimated based on an internally developed model that uses readily observable market data such as interest rates, prices and indices to generate continuous yield or pricing curves, volatility factors, and client credit-related adjustments, subject to the anticipated loan funding probability (pull-through rate). These fair value estimates are classified as Level 2 within the valuation hierarchy. Fair values of interest rate swaps are determined using a discounted cash flow analysis on the expected cash flows of each derivative, which also includes a credit value adjustment for client swaps, or provided by the clearing house centralized counter party (CCP), for swaps within our hedging program. An independent third-party valuation is used to verify and confirm these values, which are classified as Level 2 within the fair value hierarchy. Valuation Methodology by Instrument - Non-recurring Basis The following is a description of the valuation methodologies used for the major categories of financial assets and liabilities measured at fair value on a non-recurring basis. Loans Loans measured at fair value on a non-recurring basis consist of loans that do not share similar risk characteristics. These loans are typically collateral-dependent loans that are valued using third-party appraised value of collateral less estimated selling price (Level 3). Other Loans Held for Sale Loans are transferred to other loans held for sale at amortized cost when Synovus makes the determination to sell specifically identified loans. If the amortized cost exceeds fair value a valuation allowance is established for the difference. The fair value of the loans is primarily determined by analyzing the anticipated market prices of similar assets less estimated costs to sell. At the time of transfer, any credit losses are determined in accordance with Synovus' policy and recorded as a charge-off against the allowance for loan losses. Subsequent changes in the valuation allowance due to changes in the fair value subsequent to the transfer, as well as gains/losses realized from the sale of these assets, are recorded as gains/losses on other loans held for sale, net, as a component of non-interest expense on the consolidated statements of income (Level 3). Other Real Estate Other Real Estate (ORE) consists of properties obtained through a foreclosure proceeding or through an in-substance foreclosure in satisfaction of loans. A loan is classified as an in-substance foreclosure when Synovus has taken possession of the collateral regardless of whether formal foreclosure proceedings have taken place. At foreclosure, ORE is recorded at fair value less estimated selling costs, which establishes a new cost basis. Subsequent to foreclosure, ORE is evaluated quarterly and reported at fair value less estimated selling costs, not to exceed the new cost basis, determined by review of current appraisals, as well as the review of comparable sales and other estimates of fair value obtained principally from independent sources, adjusted for estimated selling costs (Level 3). Any adjustments are recorded as a component of foreclosed real estate expense, net on the consolidated statements of income. Other Assets Held for Sale Other assets held for sale consist of certain premises and equipment held for sale. The fair value of these assets is determined primarily on the basis of appraisals or BOV, as circumstances warrant, adjusted for estimated selling costs. Both techniques engage licensed or certified professionals that use inputs such as absorption rates, capitalization rates, and market comparables (Level 3).
Long-term Debt	Long-term Debt Long-term debt balances are presented net of discounts and premiums, debt issuance costs that arise from the issuance of long-term debt, and the impact of hedge accounting. Discounts, premiums and debt issuance costs are amortized using the effective interest rate method or straight-line method (when the financial statement impacts of this method are not materially different from the former method). For additional information on hedge accounting, refer to the Derivative Instruments section of this Note and "Part II - Item 8. Financial Statements and Supplementary Data - Note 13 - Derivative Instruments" of this Report.
Contingent Liabilities and Legal Costs	Contingent Liabilities and Legal Costs Synovus estimates its contingent liabilities with respect to outstanding legal matters based on information currently available to management, management’s estimates about the probability of outcomes of each case and the advice of legal counsel. Management accrues an estimated loss from a loss contingency when information available indicates that it is probable that a loss has been incurred and the amount of the loss can be reasonably estimated. Significant judgment is required in making these estimates and management must make assumptions about matters that are highly uncertain. Accordingly, the actual loss may be more or less than the current estimate. In many situations, Synovus may be unable to estimate reasonably possible losses due to the preliminary nature of the legal matters, as well as a variety of other factors and uncertainties. As there are further developments, Synovus will reassess these legal matters and the related potential liabilities and will revise, when needed, its estimate of contingent liabilities.
Recent Accounting Pronouncements	Recent Accounting Pronouncements The following table provides a brief description of accounting standards adopted or issued in 2022 and the estimated effect on the Company’s financial statements. Standard Description Required date of adoption Effect on Company's financial statements or other significant matters Standards Adopted (or partially adopted ) in 2022 ASU 2021-01, Reference Rate Reform (Topic 848) In January 2021, the FASB issued ASU 2021-01 which provides optional expedients and exceptions in Topic 848 for derivative instruments and hedge accounting modifications resulting from the discounting transition of reference rate reform. This ASU is effective upon issuance and can be applied through December 31, 2024. The Company is in the process of evaluating and applying, as applicable, the optional expedients and exceptions in accounting for eligible contract modifications, eligible existing hedging relationships and new hedging relationships. The application of this guidance has not had and is not expected to have a material impact to the consolidated financial statements. SAB 121, Accounting for Obligations to Safeguard Crypto-Assets an Entity Holds for its Platform Users In March 2022, the SEC released SAB 121 to add interpretive guidance for entities to consider when they have obligations to safeguard crypto-assets held for clients. The new guidance requires reporting entities who allow clients to transact in crypto-assets and act as a custodian to record a liability with a corresponding asset regardless of whether they control the crypto-asset. The crypto-asset will need to be marked at fair value for each reporting period. The new guidance requires disclosures in the footnotes to address the amount of crypto-assets reported, and the safeguarding and recordkeeping of the assets. June 30, 2022, with retrospective application back to the beginning of the fiscal year. The adoption of this standard on June 30, 2022 had no impact to the consolidated financial statements. ASU 2022-01, Derivatives and Hedging (Topic 815): Fair Value Hedging - Portfolio Layer Method In March 2022, the FASB issued ASU 2022-01 to improve fair value hedge accounting for interest rate risk hedges for prepayable financial assets. The update allows non-prepayable financial assets to be included in a closed portfolio hedge using the portfolio layer method. The expanded scope allows entities to apply the same portfolio hedging method to both prepayable and non-prepayable financial assets. January 1, 2023. Early adoption is permitted on any date on or after the issuance date. The Company early adopted this standard during the third quarter of 2022 on a prospective basis. The adoption of this standard has not had and is not expected to have a material impact to the consolidated financial statements. Standard Description Required date of adoption Effect on Company's financial statements or other significant matters Standards Issued But Not Yet Adopted in 2022 ASU 2022-02, Financial Instruments – Credit Losses (Topic 326): Troubled Debt Restructurings and Vintage Disclosure In March 2022, the FASB issued ASU 2022-02 to eliminate TDR accounting guidance while enhancing disclosure requirements for certain loan refinancings and restructurings by creditors when a borrower is experiencing financial difficulty. The ASU also provides guidance for vintage table disclosures and gross write-offs. The ASU requires an entity to disclose current-period gross write-offs by year of origination for financing receivables within the scope of Subtopic 326-20. January 1, 2023. Early adoption is permitted as of an interim period with retrospective application back to the beginning of the fiscal year. The Company adopted this standard on January 1, 2023 on a prospective basis. The adoption of this standard has not had a material impact to the consolidated financial statements.

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2022
Accounting Policies [Abstract]
Accounting Standards Update and Change in Accounting Principle	The following table provides a brief description of accounting standards adopted or issued in 2022 and the estimated effect on the Company’s financial statements. Standard Description Required date of adoption Effect on Company's financial statements or other significant matters Standards Adopted (or partially adopted ) in 2022 ASU 2021-01, Reference Rate Reform (Topic 848) In January 2021, the FASB issued ASU 2021-01 which provides optional expedients and exceptions in Topic 848 for derivative instruments and hedge accounting modifications resulting from the discounting transition of reference rate reform. This ASU is effective upon issuance and can be applied through December 31, 2024. The Company is in the process of evaluating and applying, as applicable, the optional expedients and exceptions in accounting for eligible contract modifications, eligible existing hedging relationships and new hedging relationships. The application of this guidance has not had and is not expected to have a material impact to the consolidated financial statements. SAB 121, Accounting for Obligations to Safeguard Crypto-Assets an Entity Holds for its Platform Users In March 2022, the SEC released SAB 121 to add interpretive guidance for entities to consider when they have obligations to safeguard crypto-assets held for clients. The new guidance requires reporting entities who allow clients to transact in crypto-assets and act as a custodian to record a liability with a corresponding asset regardless of whether they control the crypto-asset. The crypto-asset will need to be marked at fair value for each reporting period. The new guidance requires disclosures in the footnotes to address the amount of crypto-assets reported, and the safeguarding and recordkeeping of the assets. June 30, 2022, with retrospective application back to the beginning of the fiscal year. The adoption of this standard on June 30, 2022 had no impact to the consolidated financial statements. ASU 2022-01, Derivatives and Hedging (Topic 815): Fair Value Hedging - Portfolio Layer Method In March 2022, the FASB issued ASU 2022-01 to improve fair value hedge accounting for interest rate risk hedges for prepayable financial assets. The update allows non-prepayable financial assets to be included in a closed portfolio hedge using the portfolio layer method. The expanded scope allows entities to apply the same portfolio hedging method to both prepayable and non-prepayable financial assets. January 1, 2023. Early adoption is permitted on any date on or after the issuance date. The Company early adopted this standard during the third quarter of 2022 on a prospective basis. The adoption of this standard has not had and is not expected to have a material impact to the consolidated financial statements. Standard Description Required date of adoption Effect on Company's financial statements or other significant matters Standards Issued But Not Yet Adopted in 2022 ASU 2022-02, Financial Instruments – Credit Losses (Topic 326): Troubled Debt Restructurings and Vintage Disclosure In March 2022, the FASB issued ASU 2022-02 to eliminate TDR accounting guidance while enhancing disclosure requirements for certain loan refinancings and restructurings by creditors when a borrower is experiencing financial difficulty. The ASU also provides guidance for vintage table disclosures and gross write-offs. The ASU requires an entity to disclose current-period gross write-offs by year of origination for financing receivables within the scope of Subtopic 326-20. January 1, 2023. Early adoption is permitted as of an interim period with retrospective application back to the beginning of the fiscal year. The Company adopted this standard on January 1, 2023 on a prospective basis. The adoption of this standard has not had a material impact to the consolidated financial statements.

Investment Securities Availab_2

Investment Securities Available for Sale (Tables)	12 Months Ended
	Dec. 31, 2022
Investments [Abstract]
Summary of Available-for-Sale Investment Securities	The amortized cost, gross unrealized gains and losses, and estimated fair values of investment securities available for sale at December 31, 2022 and 2021 are summarized below. December 31, 2022 (in thousands) Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value U.S. Treasury securities $ 515,953 $ — $ (44,140) $ 471,813 U.S. Government agency securities 52,411 — (3,613) 48,798 Mortgage-backed securities issued by U.S. Government agencies 904,593 1,624 (113,468) 792,749 Mortgage-backed securities issued by U.S. Government sponsored enterprises 8,144,374 936 (1,250,240) 6,895,070 Collateralized mortgage obligations issued by U.S. Government agencies or sponsored enterprises 769,498 — (114,371) 655,127 Commercial mortgage-backed securities issued by U.S. Government agencies or sponsored enterprises 877,590 — (71,645) 805,945 Corporate debt securities and other debt securities 8,908 — (307) 8,601 Total investment securities available for sale $ 11,273,327 $ 2,560 $ (1,597,784) $ 9,678,103 December 31, 2021 (in thousands) Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value U.S. Treasury securities $ 120,465 $ — $ (2,627) $ 117,838 U.S. Government agency securities 53,214 1,374 (387) 54,201 Mortgage-backed securities issued by U.S. Government agencies 790,329 768 (11,464) 779,633 Mortgage-backed securities issued by U.S. Government sponsored enterprises 8,063,890 50,491 (102,080) 8,012,301 Collateralized mortgage obligations issued by U.S. Government agencies or sponsored enterprises 951,691 4,658 (16,726) 939,623 Commercial mortgage-backed securities issued by U.S. Government agencies or sponsored enterprises 479,420 8,644 (6,320) 481,744 Asset-backed securities 514,188 — — 514,188 Corporate debt securities and other debt securities 18,309 492 — 18,801 Total investment securities available for sale $ 10,991,506 $ 66,427 $ (139,604) $ 10,918,329
Schedule of Unrealized Loss on Investments	Gross unrealized losses on investment securities and the fair value of the related securities, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, at December 31, 2022 and December 31, 2021 are presented below. December 31, 2022 Less than 12 Months 12 Months or Longer Total (in thousands) Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses U.S. Treasury securities $ 139,737 $ (6,789) $ 307,582 $ (37,351) $ 447,319 $ (44,140) U.S. Government agency securities 28,938 (1,053) 19,603 (2,560) 48,541 (3,613) Mortgage-backed securities issued by U.S. Government agencies 187,655 (5,952) 521,395 (107,516) 709,050 (113,468) Mortgage-backed securities issued by U.S. Government sponsored enterprises 1,473,348 (120,135) 5,365,233 (1,130,105) 6,838,581 (1,250,240) Collateralized mortgage obligations issued by U.S. Government agencies or sponsored enterprises 119,649 (10,311) 535,478 (104,060) 655,127 (114,371) Commercial mortgage-backed securities issued by U.S. Government agencies or sponsored enterprises 565,382 (29,383) 240,564 (42,262) 805,946 (71,645) Corporate debt securities and other debt securities 8,601 (307) — — 8,601 (307) Total $ 2,523,310 $ (173,930) $ 6,989,855 $ (1,423,854) $ 9,513,165 $ (1,597,784) December 31, 2021 Less than 12 Months 12 Months or Longer Total (in thousands) Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses U.S. Treasury securities $ 49,648 $ (379) $ 47,590 $ (2,248) $ 97,238 $ (2,627) U.S. Government agency securities 21,760 (387) — — 21,760 (387) Mortgage-backed securities issued by U.S. Government agencies 461,078 (5,858) 244,264 (5,606) 705,342 (11,464) Mortgage-backed securities issued by U.S. Government sponsored enterprises 5,729,476 (82,671) 643,758 (19,409) 6,373,234 (102,080) Collateralized mortgage obligations issued by U.S. Government agencies or sponsored enterprises 187,431 (3,981) 504,238 (12,745) 691,669 (16,726) Commercial mortgage-backed securities issued by U.S. Government agencies or sponsored enterprises 146,672 (2,951) 83,533 (3,369) 230,205 (6,320) Total $ 6,596,065 $ (96,227) $ 1,523,383 $ (43,377) $ 8,119,448 $ (139,604)
Amortized Cost and Estimated Fair Value by Contractual Maturity of Investment Securities Available-for-Sale	The amortized cost and fair value by contractual maturity of investment securities available for sale at December 31, 2022 are shown below. The expected life of MBSs or CMOs may differ from contractual maturities because issuers may have the right to call or prepay obligations with or without call or prepayment penalties. For purposes of the maturity table, MBSs and CMOs, which are not due at a single maturity date, have been classified based on the final contractual maturity date. Distribution of Maturities at December 31, 2022 (in thousands) Within One Year 1 to 5 5 to 10 More Than Total Amortized Cost U.S. Treasury securities $ 24,293 $ 441,804 $ 49,856 $ — $ 515,953 U.S. Government agency securities 273 22,148 29,990 — 52,411 Mortgage-backed securities issued by U.S. Government agencies — 534 4 904,055 904,593 Mortgage-backed securities issued by U.S. Government sponsored enterprises — 4,659 109,583 8,030,132 8,144,374 Collateralized mortgage obligations issued by U.S. Government agencies or sponsored enterprises — 91 12,293 757,114 769,498 Commercial mortgage-backed securities issued by U.S. Government agencies or sponsored enterprises — 573,334 238,228 66,028 877,590 Corporate debt securities and other debt securities — 8,908 — — 8,908 Total amortized cost $ 24,566 $ 1,051,478 $ 439,954 $ 9,757,329 $ 11,273,327 Fair Value U.S. Treasury securities $ 24,293 $ 407,430 $ 40,090 $ — $ 471,813 U.S. Government agency securities 273 19,588 28,937 — 48,798 Mortgage-backed securities issued by U.S. Government agencies — 517 4 792,228 792,749 Mortgage-backed securities issued by U.S. Government sponsored enterprises — 4,451 102,400 6,788,219 6,895,070 Collateralized mortgage obligations issued by U.S. Government agencies or sponsored enterprises — 88 11,808 643,231 655,127 Commercial mortgage-backed securities issued by U.S. Government agencies or sponsored enterprises — 540,820 203,757 61,368 805,945 Corporate debt securities and other debt securities — 8,601 — — 8,601 Total fair value $ 24,566 $ 981,495 $ 386,996 $ 8,285,046 $ 9,678,103
Summary of Sales Transactions in the Investment Securities Available-for-Sale Portfolio	Gross gains and gross losses on sales of securities available for sale for the years ended December 31, 2022, 2021, and 2020 are presented below. The specific identification method is used to reclassify gains and losses out of other comprehensive income (loss) at the time of sale. (in thousands) 2022 2021 2020 Gross realized gains on sales $ — $ 1,191 $ 85,375 Gross realized losses on sales — (1,990) (6,444) Investment securities gains (losses), net $ — $ (799) $ 78,931

Loans And Allowance For Loan _2

Loans And Allowance For Loan Losses (Tables)	12 Months Ended
	Dec. 31, 2022
Receivables [Abstract]
Schedule of Current, Accruing Past Due, and Nonaccrual Loans	The following tables provide a summary of current, accruing past due, and non-accrual loans by portfolio class as of December 31, 2022 and December 31, 2021. December 31, 2022 (in thousands) Current Accruing 30-89 Days Past Due Accruing 90 Days or Greater Past Due Total Accruing Past Due Non-accrual with an ALL Non-accrual without an ALL Total Commercial, financial, and agricultural $ 13,798,639 $ 15,033 $ 1,437 $ 16,470 $ 48,008 $ 11,299 $ 13,874,416 Owner-occupied 8,181,649 487 — 487 9,499 605 8,192,240 Total commercial and industrial 21,980,288 15,520 1,437 16,957 57,507 11,904 22,066,656 Investment properties 11,639,614 960 — 960 1,785 1,688 11,644,047 1-4 family properties 613,049 762 — 762 2,172 950 616,933 Land and development 388,098 77 — 77 1,158 — 389,333 Total commercial real estate 12,640,761 1,799 — 1,799 5,115 2,638 12,650,313 Consumer mortgages 5,163,417 13,969 210 14,179 36,847 — 5,214,443 Home equity 1,742,412 7,795 1 7,796 6,830 — 1,757,038 Credit cards 200,047 1,843 1,722 3,565 — — 203,612 Other consumer loans 1,795,799 21,269 3 21,272 7,220 — 1,824,291 Total consumer 8,901,675 44,876 1,936 46,812 50,897 — 8,999,384 Loans, net of deferred fees and costs $ 43,522,724 $ 62,195 $ 3,373 $ 65,568 $ 113,519 $ 14,542 $ 43,716,353 December 31, 2021 (in thousands) Current Accruing 30-89 Days Past Due Accruing 90 Days or Greater Past Due Total Accruing Past Due Non-accrual with an ALL Non-accrual without an ALL Total Commercial, financial, and agricultural $ 12,068,740 $ 13,378 $ 3,953 $ 17,331 $ 37,918 $ 23,869 $ 12,147,858 Owner-occupied 7,460,184 3,627 59 3,686 7,146 4,050 7,475,066 Total commercial and industrial 19,528,924 17,005 4,012 21,017 45,064 27,919 19,622,924 Investment properties 9,894,924 1,285 717 2,002 3,273 2,577 9,902,776 1-4 family properties 639,631 1,182 93 1,275 4,535 28 645,469 Land and development 463,949 845 154 999 1,918 — 466,866 Total commercial real estate 10,998,504 3,312 964 4,276 9,726 2,605 11,015,111 Consumer mortgages 5,033,537 6,257 126 6,383 29,078 — 5,068,998 Home equity 1,349,027 2,619 — 2,619 9,773 — 1,361,419 Credit cards 201,929 1,233 1,010 2,243 — — 204,172 Other consumer loans 2,011,430 20,369 658 21,027 6,877 — 2,039,334 Total consumer 8,595,923 30,478 1,794 32,272 45,728 — 8,673,923 Loans, net of deferred fees and costs $ 39,123,351 $ 50,795 $ 6,770 $ 57,565 $ 100,518 $ 30,524 $ 39,311,958
Loan Portfolio Credit Exposure	The following table summarizes each loan portfolio class by regulatory risk grade and origination year as of December 31, 2022 as required by CECL. December 31, 2022 Term Loans Amortized Cost Basis by Origination Year Revolving Loans (in thousands) 2022 2021 2020 2019 2018 Prior Amortized Cost Basis Converted to Term Loans Total Commercial, financial and agricultural Pass $ 1,276,814 $ 1,911,353 $ 1,009,230 $ 782,100 $ 536,001 $ 1,037,488 $ 6,862,070 $ 43,748 $ 13,458,804 Special Mention 4,131 14,289 12,691 6,637 5,716 2,777 81,889 1,710 129,840 Substandard (1) 13,751 17,780 38,943 42,773 18,405 21,418 131,422 1,003 285,495 Loss (3) — — — — — — 277 — 277 Total commercial, financial and agricultural 1,294,696 1,943,422 1,060,864 831,510 560,122 1,061,683 7,075,658 46,461 13,874,416 Owner-occupied Pass 1,537,016 1,675,524 1,137,889 909,525 664,734 1,103,500 866,920 — 7,895,108 Special Mention 4,238 6,760 24,175 13,913 5,024 69,500 — — 123,610 Substandard (1) 19,437 13,381 63,925 7,415 51,364 17,755 — — 173,277 Loss (2) — 245 — — — — — — 245 Total owner-occupied 1,560,691 1,695,910 1,225,989 930,853 721,122 1,190,755 866,920 — 8,192,240 Total commercial and industrial 2,855,387 3,639,332 2,286,853 1,762,363 1,281,244 2,252,438 7,942,578 46,461 22,066,656 Investment properties Pass 2,671,660 3,245,669 1,532,230 1,220,974 775,747 1,543,724 541,118 — 11,531,122 Special Mention 2,379 1,550 — 14,570 5,908 2,388 146 — 26,941 Substandard (1) 5,973 1,455 176 1,688 51,767 3,931 20,994 — 85,984 Total investment properties 2,680,012 3,248,674 1,532,406 1,237,232 833,422 1,550,043 562,258 — 11,644,047 1-4 family properties Pass 248,418 154,181 44,032 33,246 27,053 55,543 47,732 — 610,205 Special Mention 1 — 752 — — 297 — — 1,050 Substandard (1) 1,309 1,429 75 741 836 1,243 45 — 5,678 Total 1-4 family properties 249,728 155,610 44,859 33,987 27,889 57,083 47,777 — 616,933 Land and development Pass 119,801 84,055 21,984 39,484 18,600 64,854 5,078 — 353,856 Special Mention — — 744 — 29,618 1,118 — — 31,480 Substandard (1) 699 325 220 627 472 1,654 — — 3,997 Total land and development 120,500 84,380 22,948 40,111 48,690 67,626 5,078 — 389,333 Total commercial real estate 3,050,240 3,488,664 1,600,213 1,311,330 910,001 1,674,752 615,113 — 12,650,313 December 31, 2022 Term Loans Amortized Cost Basis by Origination Year Revolving Loans (in thousands) 2022 2021 2020 2019 2018 Prior Amortized Cost Basis Converted to Term Loans Total Consumer mortgages Pass $ 857,489 $ 1,188,652 $ 1,356,065 $ 458,441 $ 182,834 $ 1,118,686 $ 143 $ — $ 5,162,310 Substandard (1) 1,153 6,452 8,519 9,442 6,167 19,662 — — 51,395 Loss (2) — — — 4 — 734 — — 738 Total consumer mortgages 858,642 1,195,104 1,364,584 467,887 189,001 1,139,082 143 — 5,214,443 Home equity Pass — — — — — — 1,241,201 504,272 1,745,473 Substandard (1) — — — — — — 6,534 4,512 11,046 Loss (2) — — — — — — 402 117 519 Total home equity — — — — — — 1,248,137 508,901 1,757,038 Credit cards Pass — — — — — — 201,898 — 201,898 Substandard (1) — — — — — — 617 — 617 Loss (3) — — — — — — 1,097 — 1,097 Total credit cards — — — — — — 203,612 — 203,612 Other consumer loans Pass 284,045 524,601 457,684 61,760 31,662 142,189 313,565 — 1,815,506 Substandard (1) 1,417 3,810 1,648 712 163 888 139 — 8,777 Loss (3) — — — — — 8 — — 8 Total other consumer loans 285,462 528,411 459,332 62,472 31,825 143,085 313,704 — 1,824,291 Total consumer 1,144,104 1,723,515 1,823,916 530,359 220,826 1,282,167 1,765,596 508,901 8,999,384 Loans, net of deferred fees and costs $ 7,049,731 $ 8,851,511 $ 5,710,982 $ 3,604,052 $ 2,412,071 $ 5,209,357 $ 10,323,287 $ 555,362 $ 43,716,353 (1) The majority of loans within Substandard risk grade are accruing loans at December 31, 2022. (2) Loans within Loss risk grade are on non-accrual status and have an ALL equal to the full loan amount. (3) Represent amounts that were 120 days past due. These credits are downgraded to the Loss category with an ALL equal to the full loan amount and are generally charged off upon reaching 181 days past due in accordance with the FFIEC Retail Credit Classification Policy. December 31, 2021 Term Loans Amortized Cost Basis by Origination Year Revolving Loans (in thousands) 2021 2020 2019 2018 2017 Prior Amortized Cost Basis Converted to Term Loans Total Commercial, financial and agricultural Pass $ 2,396,717 $ 1,332,549 $ 922,396 $ 607,918 $ 433,045 $ 903,995 $ 5,151,981 $ 42,809 $ 11,791,410 Special Mention 2,731 15,166 17,571 10,433 2,242 2,489 71,996 — 122,628 Substandard (1) 16,105 50,979 40,125 10,383 16,473 37,565 51,442 33 223,105 Doubtful (2) 469 — 1,601 8,512 — — 48 — 10,630 Loss (4) — — — — — — 85 — 85 Total commercial, financial and agricultural 2,416,022 1,398,694 981,693 637,246 451,760 944,049 5,275,552 42,842 12,147,858 Owner-occupied Pass 1,776,086 1,276,797 1,117,825 858,721 708,942 1,116,766 437,724 — 7,292,861 Special Mention 702 19,950 4,724 10,202 18,109 36,481 — — 90,168 Substandard (1) 7,312 1,294 8,386 43,276 6,169 25,329 — — 91,766 Loss (3) 271 — — — — — — — 271 Total owner-occupied 1,784,371 1,298,041 1,130,935 912,199 733,220 1,178,576 437,724 — 7,475,066 Total commercial and industrial 4,200,393 2,696,735 2,112,628 1,549,445 1,184,980 2,122,625 5,713,276 42,842 19,622,924 Investment properties Pass 2,823,978 1,463,503 1,905,534 1,019,765 738,036 1,317,634 278,697 — 9,547,147 Special Mention 6,163 — 32,290 63,900 59,194 44,532 33,659 — 239,738 Substandard (1) 1,465 326 8,550 57,127 3,564 23,505 21,354 — 115,891 Total investment properties 2,831,606 1,463,829 1,946,374 1,140,792 800,794 1,385,671 333,710 — 9,902,776 1-4 family properties Pass 295,082 82,976 51,939 43,025 49,057 57,025 55,588 — 634,692 Special Mention 192 207 641 — — 239 — — 1,279 Substandard (1) 1,999 — 566 4,222 489 2,177 45 — 9,498 Total 1-4 family properties 297,273 83,183 53,146 47,247 49,546 59,441 55,633 — 645,469 Land and development Pass 141,614 42,201 77,868 34,058 37,167 44,989 44,730 — 422,627 Special Mention — 800 1,900 31,458 — 1,179 — — 35,337 Substandard (1) 824 1,149 46 3,021 807 3,055 — — 8,902 Total land and development 142,438 44,150 79,814 68,537 37,974 49,223 44,730 — 466,866 Total commercial real estate 3,271,317 1,591,162 2,079,334 1,256,576 888,314 1,494,335 434,073 — 11,015,111 December 31, 2021 Term Loans Amortized Cost Basis by Origination Year Revolving Loans (in thousands) 2021 2020 2019 2018 2017 Prior Amortized Cost Basis Converted to Term Loans Total Consumer mortgages Pass $ 1,274,999 $ 1,556,733 $ 572,467 $ 216,277 $ 392,492 $ 1,001,771 $ 255 $ — $ 5,014,994 Substandard (1) 1,031 3,680 5,943 12,387 5,717 25,025 — — 53,783 Loss (3) — — 5 — — 216 — — 221 Total consumer mortgages 1,276,030 1,560,413 578,415 228,664 398,209 1,027,012 255 — 5,068,998 Home equity Pass — — — — — — 1,199,556 146,635 1,346,191 Substandard (1) — — — — — — 9,058 5,372 14,430 Loss (3) — — — — — — 658 140 798 Total home equity — — — — — — 1,209,272 152,147 1,361,419 Credit cards Pass — — — — — — 203,161 — 203,161 Substandard (1) — — — — — — 348 — 348 Loss (4) — — — — — — 663 — 663 Total credit cards — — — — — — 204,172 — 204,172 Other consumer loans Pass 654,419 708,937 127,131 49,993 86,175 97,765 306,500 — 2,030,920 Substandard (1) 668 1,550 2,064 1,308 1,892 750 162 — 8,394 Loss (4) — — — — — 20 — — 20 Total other consumer loans 655,087 710,487 129,195 51,301 88,067 98,535 306,662 — 2,039,334 Total consumer 1,931,117 2,270,900 707,610 279,965 486,276 1,125,547 1,720,361 152,147 8,673,923 Loan, net of deferred fees and costs $ 9,402,827 $ 6,558,797 $ 4,899,572 $ 3,085,986 $ 2,559,570 $ 4,742,507 $ 7,867,710 $ 194,989 $ 39,311,958 (1) The majority of loans within Substandard risk grade are accruing loans at December 31, 2021. (2) Loans within Doubtful risk grade are on non-accrual status and generally have an ALL equal to 50% of the loan amount. (3) Loans within Loss risk grade are on non-accrual status and have an ALL equal to the full loan amount. (4) Represent amounts that were 120 days past due. These credits are downgraded to the Loss category with an ALL equal to the full loan amount and are generally charged off upon reaching 181 days past due in accordance with the FFIEC Retail Credit Classification Policy.
Financing Receivable, Allowance for Credit Loss	The following tables detail the changes in the ALL by loan segment for the years ended December 31, 2022, 2021, and 2020. For the years ended December 31, 2022 and 2021 , Synovus had no significant transfers to loans held for sale. For the year ended December 31, 2020, Synovus reversed a net amount of $18.3 million in previously established reserves for credit losses associated with net transfers to held for sale of $1.43 billion in performing loans, primarily related to third-party single-service consumer loans and non-relationship consumer mortgages. As of and For The Year Ended December 31, 2022 (in thousands) Commercial & Industrial Commercial Real Estate Consumer Total Allowance for loan losses: Beginning balance $ 188,364 $ 97,760 $ 141,473 $ 427,597 Charge-offs (42,588) (3,102) (38,020) (83,710) Recoveries 14,625 1,633 14,296 30,554 Provision for (reversal of) loan losses 1,149 47,284 20,550 68,983 Ending balance $ 161,550 $ 143,575 $ 138,299 $ 443,424 As of and For The Year Ended December 31, 2021 (in thousands) Commercial & Industrial Commercial Real Estate Consumer Total Allowance for loan losses: Beginning balance $ 229,555 $ 130,742 $ 245,439 $ 605,736 Charge-offs (59,457) (15,392) (30,383) (105,232) Recoveries 9,734 7,444 10,266 27,444 Provision for (reversal of) loan losses 8,532 (25,034) (83,849) (100,351) Ending balance $ 188,364 $ 97,760 $ 141,473 $ 427,597 As of and For The Year Ended December 31, 2020 (in thousands) Commercial & Industrial Commercial Real Estate Consumer Total Allowance for loan losses: Beginning balance, prior to adoption of ASC 326 $ 145,782 $ 67,430 $ 68,190 $ 281,402 Impact from adoption of ASC 326 (2,310) (651) 85,955 82,994 Beginning balance, after adoption of ASC 326 143,472 66,779 154,145 364,396 Charge-offs (76,260) (13,213) (29,789) (119,262) Recoveries 13,544 2,857 8,149 24,550 Provision for (reversal of) loan losses 148,799 74,319 112,934 336,052 Ending balance $ 229,555 $ 130,742 $ 245,439 $ 605,736
Troubled Debt Restructurings	Information about Synovus' TDRs is presented in the following tables. Synovus began entering into loan modifications with borrowers in response to the COVID-19 pandemic under the CARES Act, some of which had not been classified as TDRs. The CARES Act election period ended on January 1, 2022. The following tables present, by concession type, the post-modification balance for loans modified or renewed during the years ended December 31, 2022, 2021, and 2020 that were reported as accruing or non-accruing TDRs. TDRs by Concession Type Year Ended December 31, 2022 (in thousands, except contract data) Number of Contracts Below Market Interest Rate Other Concessions (1) Total Commercial, financial, and agricultural 86 $ 34,518 $ 1,279 $ 35,797 Owner-occupied 29 65,956 3,857 69,813 Total commercial and industrial 115 100,474 5,136 105,610 Investment properties 7 5,026 6,610 11,636 1-4 family properties 14 3,850 — 3,850 Land and development 4 3,168 — 3,168 Total commercial real estate 25 12,044 6,610 18,654 Consumer mortgages 10 1,176 266 1,442 Home equity 41 4,836 39 4,875 Other consumer loans 15 — 605 605 Total consumer 66 6,012 910 6,922 Loans, net of deferred fees and costs 206 $ 118,530 $ 12,656 $ 131,186 (2) Year Ended December 31, 2021 (in thousands, except contract data) Number of Contracts Below Market Interest Rate Other Concessions (1) Total Commercial, financial, and agricultural 152 $ 12,746 $ 8,096 $ 20,842 Owner-occupied 24 5,908 868 6,776 Total commercial and industrial 176 18,654 8,964 27,618 Investment properties 9 3,130 — 3,130 1-4 family properties 13 1,131 123 1,254 Land and development 8 1,948 60 2,008 Total commercial real estate 30 6,209 183 6,392 Consumer mortgages 18 2,512 1,006 3,518 Home equity 55 4,991 258 5,249 Other consumer loans 103 435 5,720 6,155 Total consumer 176 7,938 6,984 14,922 Loans, net of deferred fees and costs 382 $ 32,801 $ 16,131 $ 48,932 (3) TDRs by Concession Type (continued) Year Ended December 31, 2020 (in thousands, except contract data) Number of Contracts Below Market Interest Rate Other Concessions (1) Total Commercial, financial, and agricultural 152 $ 10,939 $ 11,912 $ 22,851 Owner-occupied 22 4,536 1,530 6,066 Total commercial and industrial 174 15,475 13,442 28,917 Investment properties 9 29,679 1,420 31,099 1-4 family properties 22 1,769 1,105 2,874 Land and development 4 606 — 606 Total commercial real estate 35 32,054 2,525 34,579 Consumer mortgages 23 1,866 2,789 4,655 Home equity 63 1,970 2,530 4,500 Other consumer loans 57 1,185 2,779 3,964 Total consumer 143 5,021 8,098 13,119 Loans, net of deferred fees and costs 352 $ 52,550 $ 24,065 $ 76,615 (4) (1) Other concessions generally include term extensions, interest only payments for a period of time, or principal forgiveness, but there was no principal forgiveness for the years ended December 31, 2022, 2021, and 2020. (2) No charge-offs were recorded during the year ended December 31, 2022 upon restructuring of these loans. (3) No charge-offs were recorded during the year ended December 31, 2021 upon restructuring of these loans.

Premises Equipment and Softwa_2

Premises Equipment and Software (Tables)	12 Months Ended
	Dec. 31, 2022
Property, Plant and Equipment [Abstract]
Schedule of Premises Equipment and Software	Premises, equipment and software at December 31, 2022 and 2021 consist of the following: (in thousands) 2022 2021 Land $ 92,125 $ 104,768 Buildings and improvements 303,934 361,593 Leasehold improvements 89,619 55,098 Furniture, equipment and software 422,495 441,091 Construction in progress 17,528 18,918 Total premises, equipment and software 925,701 981,468 Less: Accumulated depreciation and amortization (555,069) (574,227) Net premises, equipment and software $ 370,632 $ 407,241

Goodwill and Other Intangible_2

Goodwill and Other Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2022
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Goodwill	Goodwill allocated to each reporting unit at December 31, 2022 and 2021 is presented as follows: (in thousands) Wholesale Banking Reporting Unit Community Banking Reporting Unit Consumer Banking Reporting Unit Wealth Management Reporting Unit Total Goodwill Balance as of December 31, 2020 (1) $ 171,636 $ 256,323 $ — $ 24,431 $ 452,390 Change in goodwill — — — — — Balance as of December 31, 2021 $ 171,636 $ 256,323 $ — $ 24,431 $ 452,390 Change in goodwill from reallocation — (114,701) 114,701 — — Balance as of December 31, 2022 $ 171,636 $ 141,622 $ 114,701 $ 24,431 $ 452,390
Schedule of Other Intangible Assets	The following table shows the gross carrying amount and accumulated amortization of other intangible assets as of December 31, 2022 and 2021, which primarily consist of core deposit intangible assets. The CDI is being amortized over its estimated useful life of approximately ten years utilizing an accelerated method. Aggregate other intangible assets amortization expense for the years ended December 31, 2022, 2021, and 2020 was $8.5 million, $9.5 million, and $10.6 million, respectively, and is included in other operating expense on the consolidated statements of income. (in thousands) Gross Carrying Amount Accumulated Amortization Net Carrying Value December 31, 2022 CDI $ 57,400 $ (35,484) $ 21,916 Other 12,500 (7,292) 5,208 Total other intangible assets $ 69,900 $ (42,776) $ 27,124 December 31, 2021 CDI 57,400 (28,178) $ 29,222 Other 12,500 (6,126) 6,374 Total other intangible assets $ 69,900 $ (34,304) $ 35,596
Schedule of Finite-lived Intangible Assets Amortization Expense	The estimated amortization expense of other intangible assets for the next five years is as follows: (in thousands) Amortization Expense 2023 $ 7,429 2024 6,366 2025 5,266 2026 4,195 2027 2,824

Other Assets (Tables)

Other Assets (Tables)	12 Months Ended
	Dec. 31, 2022
Other Assets [Abstract]
Schedule of Other Assets	Significant balances included in other assets at December 31, 2022 and 2021 are presented below. (in thousands) 2022 2021 Deferred tax asset, net $ 595,317 $ 169,051 Investments in tax credits and CRA partnerships 496,527 426,137 ROU assets 421,481 411,472 Federal Reserve Bank and FHLB Stock 308,321 159,941 Accrued interest receivable 226,209 145,659 Accounts receivable 152,460 81,325 Derivative asset positions 89,815 191,708 Prepaid expense 48,152 42,874 Mutual funds and mutual funds held in rabbi trusts 42,659 43,657 MPS receivable (1) 15,320 15,320 Other investments 11,172 12,185 Trading securities, at fair value 8,295 8,391 Other real estate — 11,818 Miscellaneous other assets 55,910 70,660 Total other assets $ 2,471,638 $ 1,790,198 (1) See "Part II - Item 8. Financial Statements and Supplementary Data - Note 14 - Commitments and Contingencies" in this Report for more information on this receivable which is classified as a NPA.

Deposits (Tables)

Deposits (Tables)	12 Months Ended
	Dec. 31, 2022
Interest-Bearing Deposit Liabilities [Abstract]
Schedule of Interest Bearing Deposits	A summary of interest-bearing deposits at December 31, 2022 and 2021 is presented below. ( in thousands) 2022 2021 Interest-bearing demand deposits (1) $ 8,721,397 $ 9,321,611 Money market accounts (1) 14,830,934 16,364,338 Savings accounts 1,416,246 1,420,647 Time deposits (1) 2,964,078 3,093,027 Brokered deposits 5,299,005 2,835,000 Total interest-bearing deposits $ 33,231,660 $ 33,034,623 (1) Excluding brokered deposits
Schedule of Cash Maturities of Time Deposits	The following table presents contractual maturities of all time deposits, including brokered time deposits, at December 31, 2022. (in thousands) Maturing within one year $ 3,908,149 Between 1 - 2 years 1,748,784 2 - 3 years 567,936 3 - 4 years 32,037 4 - 5 years 26,282 Thereafter 11,837 Total $ 6,295,025

Other Short-term Borrowings a_2

Other Short-term Borrowings and Long-term Debt (Tables)	12 Months Ended
	Dec. 31, 2022
Debt Disclosure [Abstract]
Schedule of Short-term Borrowings	Other short-term borrowings at December 31, 2022 and 2021 consisted of the following: (dollars in thousands) 2022 2021 FHLB advances with original maturities of one year or less $ 600,014 $ — Securities sold short 3,370 200 Total other short-term borrowings $ 603,384 $ 200 The following table sets forth additional information on Synovus' other short-term borrowings for the years indicated. (dollars in thousands) 2022 2021 Total balance at December 31, $ 603,384 $ 200 Weighted average interest rate at December 31, 4.51 % 0.08 % Maximum month-end balance during the year $ 1,705,069 $ 200 Average amount outstanding during the year 466,254 8 Weighted average interest rate during the year 2.32 % — %
Schedule of Long-term Debt Instruments	The following table presents long-term debt at December 31, 2022 and 2021 net of unamortized discounts, debt issuance costs, and the impact of hedge accounting (refer to "Part II - Item 8. Financial Statements and Supplementary Data - Note 13 - Derivative Instruments" of this Report for additional information). (dollars in thousands) 2022 2021 Parent Company: 3.125% Senior Notes, issued November 1, 2017, due November 1, 2022, $300.0 million par value with semi-annual interest payments and principal to be paid at maturity $ — $ 299,479 5.90% Fixed-to-Fixed Rate Subordinated Notes issued February 7, 2019, due February 7, 2029, subject to redemption prior to February 7, 2029: $300.0 million par value with semi-annual interest payments at 5.90% for the first five years and semi-annual payments thereafter at a fixed rate of 3.379% above the 5-Year Mid-Swap Rate as of the reset date 298,158 297,855 5.200% Senior Notes issued August 11, 2022, due August 11, 2025, subject to redemption on or after February 11, 2023, $350.0 million par value with semi-annual interest payments in arrears and principal to be paid at maturity 336,332 — LIBOR + 1.80% junior subordinated debentures, due June 15, 2035, $10.0 million par value with quarterly interest payments and principal to be paid at maturity (rate of 6.57% at December 31, 2022 and 2.00% at December 31, 2021) 10,000 10,000 Total long-term debt — Parent Company $ 644,490 $ 607,334 Synovus Bank: 2.289% Fixed-to-Floating Rate Senior Bank Notes issued February 12, 2020, due February 10, 2023, subject to redemption on February 10, 2022: $400.0 million par value with semi-annual interest payments at 2.289% for the first two years and quarterly payments thereafter at an adjustable rate equal to the then-current SOFR + 94.5 bps per annum (1) $ — $ 399,269 4.00% Fixed-to-Fixed Rate Subordinated Bank Notes issued October 29, 2020, due October 29, 2030, $200.0 million par value with semi-annual interest payments at 4.00% for the first five years and semi-annual payments thereafter at a fixed rate of 3.625% above the 5-Year U.S. Treasury Rate 190,107 197,626 FHLB advances with weighted average interest rate of 4.56% at December 31, 2022 3,275,000 — Total long-term debt — Synovus Bank 3,465,107 596,895 Total long-term debt $ 4,109,597 $ 1,204,229
Schedule of Principal Payments on Long-term Debt	Contractual annual principal payments on long-term debt for the next five years and thereafter are shown in the following table. These maturities are based upon the par value of the long-term debt. (in thousands) Parent Synovus Bank Total 2023 $ — $ 500,000 $ 500,000 2024 — 2,775,000 2,775,000 2025 350,000 — 350,000 2026 — — — 2027 — — — Thereafter 310,000 200,000 510,000 Total $ 660,000 $ 3,475,000 $ 4,135,000

Shareholders' Equity and Othe_2

Shareholders' Equity and Other Comprehensive Income (Tables)	12 Months Ended
	Dec. 31, 2022
Stockholders' Equity Note [Abstract]
Schedule of Change in Preferred and Common Shares Issued and Common Shares Held as Treasury Shares	The following table shows the changes in shares of preferred and common stock issued and common stock held as treasury shares for the years ended December 31, 2022, 2021, and 2020. (shares in thousands) Series D Preferred Stock Issued Series E Preferred Stock Issued Total Preferred Stock Issued Common Stock Issued Treasury Stock Held Common Stock Outstanding Balance at December 31, 2019 8,000 14,000 22,000 166,801 19,643 147,158 Issuance of common stock for earnout payment — — — 379 — 379 Restricted share unit activity — — — 389 — 389 Stock options exercised — — — 564 — 564 Repurchase of common stock — — — — 450 (450) Balance at December 31, 2020 8,000 14,000 22,000 168,133 20,093 148,040 Warrants exercised and common stock reissued — — — — (3) 3 Common stock reissued for earnout payment — — — — (125) 125 Restricted share unit activity — — — 355 — 355 Stock options exercised — — — 896 — 896 Repurchase of common stock — — — — 4,409 (4,409) Balance at December 31, 2021 8,000 14,000 22,000 169,384 24,374 145,010 Restricted share unit activity — — — 399 — 399 Stock options exercised — — — 358 — 358 Repurchase of common stock — — — — 281 (281) Balance at December 31, 2022 8,000 14,000 22,000 170,141 24,655 145,486
Schedule of Preferred Stock	The following table presents a summary of Preferred Stock as of December 31, 2022, 2021, and 2020. Issuance Date Public Offering Amount Net Proceeds Earliest Redemption Date Dividend Rate (1) Liquidation Preference Series D June 21, 2018 $200.0 million $195.1 million June 21, 2023 6.300 % (2) $25 per share Series E July 1, 2019 $350.0 million $342.0 million July 1, 2024 5.875 % (3) $25 per share (1) Dividends on all series of Preferred Stock are non-cumulative and, if declared, will accrue and be payable in arrears, quarterly. (2) Dividends, if declared, will be paid quarterly at a rate per annum equal to 6.300% for each dividend period from the original issue date to, but excluding, June 21, 2023. From and including June 21, 2023, the dividend rate will change to a floating rate equal to the three-month LIBOR plus a spread of 3.352% per annum. Dividends declared beyond June 30, 2023 will be determined based on the floating rate index terms as described in the issuance documentation. (3) Dividends, if declared, will be paid quarterly at a rate per annum equal to 5.875% for each dividend period from the original issue date to, but excluding, July 1, 2024. From and including July 1, 2024, the dividend rate will change and reset every five years on July 1 at a rate equal to the five-year U.S. Treasury Rate plus 4.127% per annum.
Schedule of Changes in Accumulated Other Comprehensive Income (Loss)	The following table illustrates activity within the balances in AOCI by component, and is shown for the years ended December 31, 2022, 2021, and 2020. Changes in Accumulated Other Comprehensive Income (Loss) by Component (Net of Income Taxes) (in thousands) Net Unrealized Gains (Losses) on Investment Securities Available for Sale (1) Net Unrealized Gains (Losses) on Cash Flow Hedges (1) Post-Retirement Unfunded Health Benefit Total Balance at December 31, 2019 $ 83,666 $ (18,487) $ 462 $ 65,641 Other comprehensive income (loss) before reclassifications 80,491 73,502 — 153,993 Amounts reclassified from accumulated other comprehensive income (loss) (58,488) (2,049) (462) (60,999) Net current period other comprehensive income (loss) 22,003 71,453 (462) 92,994 Balance at December 31, 2020 $ 105,669 $ 52,966 $ — $ 158,635 Other comprehensive income (loss) before reclassifications (174,246) (57,705) — (231,951) Amounts reclassified from accumulated other comprehensive income (loss) 597 (9,602) — (9,005) Net current period other comprehensive income (loss) (173,649) (67,307) — (240,956) Balance at December 31, 2021 $ (67,980) $ (14,341) $ — $ (82,321) Other comprehensive income (loss) before reclassifications (1,152,283) (225,715) — (1,377,998) Amounts reclassified from accumulated other comprehensive income (loss) — 18,202 — 18,202 Net current period other comprehensive income (loss) (1,152,283) (207,513) — (1,359,796) Balance at December 31, 2022 $ (1,220,263) $ (221,854) $ — $ (1,442,117) (1) For all periods presented, the ending balance in net unrealized gains (losses) on investment securities available for sale and cash flow hedges includes unrealized losses of $13.3 million and $12.1 million, respectively, related to residual tax effects remaining in OCI due to previously established deferred tax asset valuation allowances in 2010 and 2011. In accordance with ASC 740-20-45-11(b), under the portfolio approach, these unrealized losses are realized at the time the entire portfolio is sold or disposed.

Regulatory Capital (Tables)

Regulatory Capital (Tables)	12 Months Ended
	Dec. 31, 2022
Regulatory Capital Disclosure [Abstract]
Schedule of Compliance with Regulatory Capital	The following table summarizes regulatory capital information at December 31, 2022 and 2021 for Synovus and Synovus Bank. Actual Capital Minimum Requirement For Capital Adequacy (1) To Be Well-Capitalized Under Prompt Corrective Action Provisions (2) (dollars in thousands) 2022 2021 2022 2021 2022 2021 Synovus Financial Corp. CET1 capital $ 4,926,194 $ 4,388,618 $ 2,302,824 $ 2,079,435 N/A N/A Tier 1 risk-based capital 5,463,339 4,925,763 3,070,432 2,772,581 N/A N/A Total risk-based capital 6,415,681 5,827,196 4,093,909 3,696,774 N/A N/A CET1 capital ratio 9.63 % 9.50 % 4.50 % 4.50 % N/A N/A Tier 1 risk-based capital ratio 10.68 10.66 6.00 6.00 N/A N/A Total risk-based capital ratio 12.54 12.61 8.00 8.00 N/A N/A Leverage ratio 9.07 8.72 4.00 4.00 N/A N/A Synovus Bank CET1 capital $ 5,446,703 $ 4,998,698 $ 2,300,126 $ 2,076,515 $ 3,322,404 $ 2,999,410 Tier 1 risk-based capital 5,446,703 4,998,698 3,066,835 2,768,686 4,089,113 3,691,581 Total risk-based capital 6,079,152 5,587,757 4,089,113 3,691,581 5,111,391 4,614,477 CET1 capital ratio 10.66 % 10.83 % 4.50 % 4.50 % 6.50 % 6.50 % Tier 1 risk-based capital ratio 10.66 10.83 6.00 6.00 8.00 8.00 Total risk-based capital ratio 11.89 12.11 8.00 8.00 10.00 10.00 Leverage ratio 9.06 8.86 4.00 4.00 5.00 5.00 (1) The additional capital conservation buffer in effect is 2.5%. (2) The prompt corrective action provisions are applicable at the bank level only.

Net Income Per Common Share (Ta

Net Income Per Common Share (Tables)	12 Months Ended
	Dec. 31, 2022
Earnings Per Share [Abstract]
Schedule of Basic And Diluted Earnings per Share	The following table displays a reconciliation of the information used in calculating basic and diluted net income per common share for the years ended December 31, 2022, 2021, and 2020. Diluted net income per common share incorporates the potential impact of contingently issuable shares, including awards which require future service as a condition of delivery of the underlying common stock. Years Ended December 31, (in thousands, except per share data) 2022 2021 2020 Net income $ 757,902 $ 760,467 $ 373,695 Less: Preferred stock dividends 33,163 33,163 33,163 Net income available to common shareholders $ 724,739 $ 727,304 $ 340,532 Weighted average common shares outstanding 145,364 147,041 147,415 Effect of dilutive outstanding equity-based awards, warrants, and earnout payments 1,117 1,454 795 Weighted average diluted common shares 146,481 148,495 148,210 Net income per common share, basic $ 4.99 $ 4.95 $ 2.31 Net income per common share, diluted $ 4.95 $ 4.90 $ 2.30

Fair Value Accounting (Tables)

Fair Value Accounting (Tables)	12 Months Ended
	Dec. 31, 2022
Fair Value Disclosures [Abstract]
Financial Instruments Measured at Fair Value on Recurring Basis	The following table presents all financial instruments measured at fair value on a recurring basis as of December 31, 2022 and 2021. December 31, 2022 December 31, 2021 (in thousands) Level 1 Level 2 Level 3 Total Assets and Liabilities at Fair Value Level 1 Level 2 Level 3 Total Assets and Liabilities at Fair Value Assets Trading securities: Mortgage-backed securities issued by U.S. Government agencies $ — $ — $ — $ — $ — $ 197 $ — $ 197 Collateralized mortgage obligations issued by U.S. Government sponsored enterprises — 2,991 — 2,991 — 671 — 671 Other mortgage-backed securities — 3,185 — 3,185 — — — — State and municipal securities — 48 — 48 — 560 — 560 Asset-backed securities — 2,071 — 2,071 — 6,963 — 6,963 Total trading securities $ — $ 8,295 $ — $ 8,295 $ — $ 8,391 $ — $ 8,391 Investment securities available for sale: U.S. Treasury securities $ 471,813 $ — $ — $ 471,813 $ 117,838 $ — $ — $ 117,838 U.S. Government agency securities — 48,798 — 48,798 — 54,201 — 54,201 Mortgage-backed securities issued by U.S. Government agencies — 792,749 — 792,749 — 779,633 — 779,633 Mortgage-backed securities issued by U.S. Government sponsored enterprises — 6,895,070 — 6,895,070 — 8,012,301 — 8,012,301 Collateralized mortgage obligations issued by U.S. Government agencies or sponsored enterprises — 655,127 — 655,127 — 939,623 — 939,623 Commercial mortgage-backed securities issued by U.S. Government agencies or sponsored enterprises — 805,945 — 805,945 — 481,744 — 481,744 Asset-backed securities — — — — — 514,188 — 514,188 Corporate debt securities and other debt securities — 8,601 — 8,601 — 18,801 — 18,801 Total investment securities available for sale $ 471,813 $ 9,206,290 $ — $ 9,678,103 $ 117,838 $ 10,800,491 $ — $ 10,918,329 Mortgage loans held for sale $ — $ 51,136 $ — $ 51,136 $ — $ 108,198 $ — $ 108,198 Other investments — — 11,172 11,172 — — 12,185 12,185 Mutual funds and mutual funds held in rabbi trusts 42,659 — — 42,659 43,657 — — 43,657 SBA loans servicing asset — — 2,354 2,354 — — 3,233 3,233 Derivative assets — 89,815 — 89,815 — 191,708 — 191,708 Liabilities Securities sold short $ 3,370 $ — $ — $ 3,370 $ — $ 200 $ — $ 200 Mutual fund held in rabbi trusts 27,944 — — 27,944 27,205 — — 27,205 Derivative liabilities — 339,227 3,453 342,680 — 95,067 3,535 98,602
Changes in Fair Value Included in Consolidated Statements of Income	The following table summarizes the difference between the fair value and the UPB of mortgage loans held for sale and the changes in fair value of these loans. An immaterial portion of these changes in fair value was attributable to instrument-specific credit risk. Years Ended December 31, (in thousands) 2022 2021 2020 Changes in fair value included in net income: Mortgage loans held for sale $ (1,541) $ (3,942) $ 3,400 Mortgage loans held for sale: Fair value 51,136 108,198 216,647 Unpaid principal balance 50,264 105,785 210,292 Fair value less aggregate unpaid principal balance $ 872 $ 2,413 $ 6,355
Changes in Level 3 Fair Value Measurements	During 2022 and 2021, Synovus did not have any transfers in or out of Level 3 in the fair value hierarchy. 2022 (in thousands) Other Investments SBA Loans Servicing Asset Visa Derivative Liability Beginning balance $ 12,185 $ 3,233 $ (3,535) Total gains (losses) realized/unrealized: Included in earnings (7,201) (2,012) (6,000) Additions 6,188 1,133 — Settlements — — 6,082 Ending balance $ 11,172 $ 2,354 $ (3,453) Total net gains (losses) for the year included in earnings attributable to the change in unrealized gains (losses) relating to assets and liabilities still held at December 31, 2022 $ (7,201) $ (460) $ (6,000) 2021 (in thousands) Investment Securities Available for Sale Other Investments SBA Loans Servicing Asset Earnout Liability Visa Derivative Liability Beginning balance $ 2,021 $ 1,021 $ 3,258 $ (5,677) $ (2,048) Total gains (losses) realized/unrealized: Included in earnings — 1,164 (1,339) (507) (2,656) Sales (2,021) — — — — Additions — 10,000 1,314 — — Settlements — — — 6,184 1,169 Ending balance $ — $ 12,185 $ 3,233 $ — $ (3,535) Total net gains (losses) for the year included in earnings attributable to the change in unrealized gains (losses) relating to assets and liabilities still held at December 31, 2021 $ — $ 1,164 $ — $ — $ (2,656)
Fair Value Measurement Inputs and Valuation Techniques	The table below provides an overview of the valuation techniques and significant unobservable inputs used in those techniques to measure financial instruments that are classified within Level 3 of the valuation hierarchy and are measured at fair value on a recurring basis. The range of sensitivities that management utilized in its fair value calculations is deemed acceptable in the industry with respect to the identified financial instruments. December 31, 2022 December 31, 2021 (dollars in thousands) Valuation Technique Significant Unobservable Input Level 3 Fair Value Rate/Range Level 3 Fair Value Rate/Range Assets (liabilities) measured at fair value on a recurring basis Other investments Individual analysis of each investee company Multiple factors, including but not limited to, current operations, financial condition, cash flows, evaluation of business management and financial plans, and recently executed financing transactions related to the investee companies $11,172 N/A $12,185 N/A SBA loans servicing asset Discounted cash flow analysis Discount rate 2,354 18.85% 14.73% 3,233 8.55% 18.50% Visa derivative liability Discounted cash flow analysis Estimated timing of resolution of Covered Litigation and future cumulative deposits to the litigation escrow for settlement of the Covered Litigation Conversion Ratio (3,453) 0-1.6 years (3Q2024) 1.5991 (3,535) 0-1.8 years (3Q 2023) 1.6181 The table below provides an overview of the valuation techniques and significant unobservable inputs used in those techniques to measure financial instruments that are classified within Level 3 of the valuation hierarchy and are measured at fair value on a non-recurring basis. December 31, 2022 December 31, 2021 Valuation Technique Significant Unobservable Input Range (Weighted Average) (1) Range (Weighted Average) (1) Assets (liabilities) measured at fair value on a non-recurring basis Loans Third-party appraised value of collateral less estimated selling costs Discount to appraised value 0%-74% (21%) 0%-10% (7%) 0%-71% (48%) 0%-10% (7%) Other real estate Third-party appraised value of real estate less estimated selling costs Discount to appraised value N/A 0%-48% (24%) 0%-10%(7%) Other assets held for sale Third-party appraised value less estimated selling costs or BOV Discount to appraised value 0%-35% (13%) 0%-10% (7%) 0%-51% (20%) 0%-10% (7%) (1) The weighted average is the measure of central tendencies; it is not the value that management is using for the asset or liability.
Assets and Liabilities Measured at Fair Value on Non-Recurring Basis	The following table presents items measured at fair value on a non-recurring basis as of the dates indicated for which there was a fair value adjustment. December 31, 2022 December 31, 2021 (in thousands) Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Loans (1) $ — $ — $ 19,410 $ 19,410 $ — $ — $ 19,482 $ 19,482 Other real estate — — — — — — 270 270 Other assets held for sale — — 7,548 7,548 — — 1,256 1,256 Years Ended December 31, (in thousands) 2022 2021 Location in Consolidated Statements of Income Loans (1) $ 7,098 $ 27,613 Provision for credit losses Other real estate — 120 Other operating expense Other assets held for sale 1,843 462 Other operating expense (1) Collateral-dependent loans that are written down to fair value of collateral.
Carrying and Estimated Fair Values of Financial Instruments Carried on Balance Sheet	The following table present s the carrying and estimated fair values of financial instruments at December 31, 2022 and 2021. The fair values represent management’s best estimates based on a range of methodologies and assumptions. See "Part II - Item 8. Financial Statements and Supplementary Data - Note 1 - Summary of Significant Accounting Policies" of this Report for a description of how fair value measurements are determined. December 31, 2022 (in thousands) Carrying Value Fair Value Level 1 Level 2 Level 3 Financial assets Total cash, cash equivalents, and restricted cash $ 1,977,780 $ 1,977,780 $ 1,977,780 $ — $ — Trading securities 8,295 8,295 — 8,295 — Investment securities available for sale 9,678,103 9,678,103 471,813 9,206,290 — Loans held for sale 391,502 391,085 — 51,136 339,949 Other investments 11,172 11,172 — — 11,172 Mutual funds and mutual funds held in rabbi trusts 42,659 42,659 42,659 — — Loans, net 43,272,929 42,192,295 — — 42,192,295 SBA loans servicing asset 2,354 2,354 — — 2,354 FRB and FHLB stock 308,321 308,321 — 308,321 — Derivative assets 89,815 89,815 — 89,815 — Financial liabilities Non-interest-bearing deposits $ 15,639,899 $ 15,639,899 $ — $ 15,639,899 $ — Non-time interest-bearing deposits 26,936,635 26,936,635 — 26,936,635 — Time deposits 6,295,025 6,260,315 — 6,260,315 — Total deposits $ 48,871,559 $ 48,836,849 $ — $ 48,836,849 $ — Federal funds purchased and securities sold under repurchase agreements 146,588 146,588 146,588 — — Securities sold short 3,370 3,370 3,370 — — Short-term FHLB advances 600,014 600,014 — 600,014 — Long-term debt 4,109,597 4,120,113 — 4,120,113 — Mutual fund held in rabbi trusts 27,944 27,944 27,944 — — Derivative liabilities 342,680 342,680 — 339,227 3,453 December 31, 2021 (in thousands) Carrying Value Fair Value Level 1 Level 2 Level 3 Financial assets Total cash, cash equivalents, and restricted cash $ 3,009,853 $ 3,009,853 $ 3,009,853 $ — $ — Trading securities 8,391 8,391 — 8,391 — Investment securities available for sale 10,918,329 10,918,329 117,838 10,800,491 — Loans held for sale 750,642 749,980 — 108,198 641,782 Other investments 12,185 12,185 — — 12,185 Mutual funds and mutual funds held in rabbi trusts 43,657 43,657 43,657 — — Loans, net 38,884,361 39,118,275 — — 39,118,275 SBA loans servicing asset 3,233 3,233 — — 3,233 FRB and FHLB stock 159,941 159,941 — 159,941 — Derivative assets 191,708 191,708 — 191,708 — Financial liabilities Non-interest-bearing deposits $ 16,392,653 $ 16,392,653 $ — $ 16,392,653 $ — Non-time interest-bearing deposits 28,917,148 28,917,148 — 28,917,148 — Time deposits 4,117,475 4,125,673 — 4,125,673 — Total deposits $ 49,427,276 $ 49,435,474 $ — $ 49,435,474 $ — Federal funds purchased and securities sold under repurchase agreements 264,133 264,133 264,133 — — Securities sold short 200 200 — 200 — Long-term debt 1,204,229 1,243,147 — 1,243,147 — Mutual fund held in rabbi trusts 27,205 27,205 27,205 — — Derivative liabilities 98,602 98,602 — 95,067 3,535

Derivative Instruments (Tables)

Derivative Instruments (Tables)	12 Months Ended
	Dec. 31, 2022
Summary of Derivative Instruments [Abstract]
Impact of Derivatives on Balance Sheet	The following table reflects the estimated fair value of derivative instruments included in other assets and other liabilities on the consolidated balance sheets along with their respective notional amounts on a gross basis. December 31, 2022 December 31, 2021 Fair Value Fair Value (in thousands) Notional Amount Derivative Assets Derivative Liabilities Notional Amount Derivative Assets Derivative Liabilities Derivatives in cash flow hedging relationships: Interest rate contracts $ 5,250,000 $ — $ 8,286 $ 3,600,000 $ 22,004 $ 20,395 Total derivatives designated as hedging instruments $ — $ 8,286 $ 22,004 $ 20,395 Derivatives in fair value hedging relationships: Interest rate contracts 2,230,232 $ — $ 8,093 $ — $ — $ — Total fair value hedges $ — $ 8,093 $ — $ — Total derivatives designated as hedging instruments $ — $ 16,379 $ 22,004 $ 20,395 Derivatives not designated: Interest rate contracts $ 10,276,754 $ 89,310 $ 322,329 $ 9,653,600 $ 167,560 $ 74,514 Mortgage derivatives - interest rate lock commitments 50,218 350 — 99,006 2,105 — Mortgage derivatives - forward commitments to sell fixed-rate mortgage loans 76,500 155 — 105,500 — 122 Risk participation agreements 635,891 — 3 374,214 — 36 Foreign exchange contracts 20,439 — 516 22,387 39 — Visa derivative — — 3,453 — — 3,535 Total derivatives not designated as hedging instruments $ 89,815 $ 326,301 $ 169,704 $ 78,207
Schedule of Derivatives Instruments Statements of Financial Performance and Financial Position, Location	The following table presents the effect of hedging derivative instruments on the consolidated statements of income and the total amounts for the respective line item affected for the years ended December 31, 2022, 2021, and 2020. 2022 Interest Income Interest Expense (in thousands) Loans, including fees Deposits Long-term debt Total interest income (expense) amounts presented in the consolidated statements of income $ 1,806,060 $ (187,232) $ (79,402) Gain (loss) on cash flow hedging relationships: (1) Interest rate contracts: Realized gains (losses) reclassified from AOCI, pre-tax, to interest income on loans $ (24,057) $ — $ — Pre-tax income (loss) recognized on cash flow hedges $ (24,057) $ — $ — Gain (loss) on fair value hedging relationships: Amounts related to interest settlements and amortization on derivatives $ — $ 1,516 $ (322) Recognized on derivatives — (24,227) (19,348) Recognized on hedged items — 24,227 19,348 Pre-tax income (loss) recognized on fair value hedges $ — $ 1,516 $ (322) 2021 Interest Income (in thousands) Loans, including fees Total interest income (expense) amounts presented in the consolidated statements of income $ 1,482,567 Gain (loss) on cash flow hedging relationships: (1) Interest rate contracts: Realized gains (losses) reclassified from AOCI, pre-tax, to interest income on loans 12,862 Pre-tax income (loss) recognized on cash flow hedges $ 12,862 2020 Interest Income (in thousands) Loans, including fees Total interest income (expense) amounts presented in the consolidated statements of income $ 1,600,462 Gain (loss) on cash flow hedging relationships: (1) Interest rate contracts: Realized gains (losses) reclassified from AOCI, pre-tax, to interest income on loans 2,765 Pre-tax income (loss) recognized on cash flow hedges $ 2,765 (1) See "Part II - Item 8. Financial Statements and Supplementary Data - Note 9 - Shareholders' Equity and Other Comprehensive Income" in this Report for additional information.
Schedule of Carrying Amount and Associated Cumulative Basis Adjustment Related to the Application of Hedge Accounting	The following table presents the carrying amount and associated cumulative basis adjustment related to the application of hedge accounting that is included in the carrying amount of the hedged assets/(liabilities) in fair value hedging relationships. December 31, 2022 December 31, 2021 Hedged Items Currently Designated Hedged Items Currently Designated (in thousands) Carrying Amount of Assets/(Liabilities) Hedge Accounting Basis Adjustment Carrying Amount of Assets/(Liabilities) Hedge Accounting Basis Adjustment Interest-bearing deposits $ (1,680,000) $ 24,227 $ — — Long-term debt (545,787) 19,348 — —
Effect of Fair Value Hedges on the Consolidated Statements of Income	The pre-tax effect of changes in fair value from derivative instruments not designated as hedging instruments on the consolidated statements of income for the years ended December 31, 2022, 2021 and 2020 is presented below. Gain (Loss) Recognized in Consolidated Statements of Income For The Years Ended December 31, (in thousands) Location in Consolidated Statements of Income 2022 2021 2020 Derivatives not designated as hedging instruments: Interest rate contracts (1) Capital markets income $ 1,570 $ 100 $ (777) Mortgage derivatives - interest rate lock commitments Mortgage banking income (1,756) (4,154) 4,969 Mortgage derivatives - forward commitments to sell fixed-rate mortgage loans Mortgage banking income 277 1,489 (1,443) Risk participation agreements Capital markets income 33 269 (213) Foreign exchange contracts Capital markets income (555) 39 — Visa derivative Other non-interest expense (6,000) (2,656) (890) Total derivatives not designated as hedging instruments $ (6,431) $ (4,913) $ 1,646 (1) Gain (loss) represents net fair value adjustments (including credit related adjustments) for client swaps. Additionally, losses related to termination of client swaps of $2.5 million

Commitments and Contingencies (

Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2022
Commitments and Contingencies Disclosure [Abstract]
Loan Commitments and Letters of Credit	Synovus also invests in CRA partnerships, including SBIC programs, and other investments. The SBIC is a program initiated by the SBA in 1958 to assist in the funding of small business loans. December 31, (in thousands) 2022 2021 Letters of credit (1) $ 220,622 $ 183,463 Commitments to fund commercial and industrial loans 9,970,733 9,595,793 Commitments to fund commercial real estate, construction, and land development loans 3,629,531 3,593,171 Commitments under home equity lines of credit 2,156,641 1,805,869 Unused credit card lines 461,443 473,582 Other loan commitments 742,976 604,353 Total letters of credit and unfunded lending commitments $ 17,181,946 $ 16,256,231 Tax credits, CRA partnerships, and other investments with a future funding commitment: Carrying amount included in other assets $ 488,944 $ 426,137 Amount of future funding commitments 283,212 250,733 Permanent and short-term construction loans and letter of credit commitments (2) 177,998 204,391 Funded portion of permanent and short-term loans and letters of credit (3) 234,166 104,315 (1) Represent the contractual amount net of risk participations purchased of approximately $25.7 million and $26.1 million at December 31, 2022 and December 31, 2021, respectively. (2) Represent the contractual amount net of risk participations of $4.7 million and $6.0 million at December 31, 2022 and December 31, 2021, respectively (3) Represent the contractual amount net of risk participations of $6.9 million and $3.0 million at December 31, 2022 and December 31, 2021, respectively.

Share-based Compensation and _2

Share-based Compensation and Other Employment Benefit Plans (Tables)	12 Months Ended
	Dec. 31, 2022
Share-Based Payment Arrangement [Abstract]
Share-based Compensation, Allocation of Recognized Period Costs	Total share-based compensation expense recognized for 2022, 2021, and 2020 is presented in the following table by its classification within total non-interest expense. Years Ended December 31, (in thousands) 2022 2021 2020 Salaries and other personnel expense $ 26,751 $ 26,957 $ 17,827 Other operating expense 1,153 838 814 Total share-based compensation expense included in non-interest expense $ 27,904 $ 27,795 $ 18,641
Schedule of Measuring Compensation Expense	The fair value of performance share units, which include a market condition, was estimated on the date of grant using a Monte Carlo simulation model with the following weighted average assumptions: 2022 2021 2020 Risk-free interest rate 2.87 % 2.87 % 1.42 % Expected stock price volatility 57.2 56.1 25.4 Simulation period 2.9 years 2.9 years 3.0 years
Schedule of Stock Options Activity	A summary of stock option activity and changes during the years ended December 31, 2022, 2021, and 2020 is presented below. Stock Options 2022 2021 2020 (in thousands, except per share data) Quantity Weighted-Average Exercise Price Quantity Weighted-Average Exercise Price Quantity Weighted-Average Exercise Price Outstanding at beginning of year 1,478 $ 22.71 2,401 $ 22.47 3,037 $ 22.74 Assumed in acquisition — — — — — — Options exercised (365) 20.27 (923) 22.07 (572) 22.67 Options forfeited/expired/canceled — — — — (64) 33.50 Options outstanding at end of year 1,113 $ 23.51 1,478 $ 22.71 2,401 $ 22.47 Options exercisable at end of year 1,113 $ 23.51 1,478 $ 22.71 2,401 $ 22.47
Schedule of Restricted Stock Units Activity	A summary of restricted share units and performance share units outstanding and changes during the years ended December 31, 2022, 2021, and 2020 is presented below. Restricted Share Units Performance Share Units (in thousands, except per share data) Quantity Weighted-Average Grant Date Fair Value Quantity Weighted-Average Grant Date Fair Value Outstanding at December 31, 2019 817 $ 38.32 495 $ 40.85 Granted 822 32.42 204 37.74 Vested (384) 38.04 (214) 41.31 Forfeited (34) 35.97 (46) 39.03 Outstanding at December 31, 2020 1,221 34.50 439 39.37 Granted 599 42.31 141 42.94 Vested (482) 37.05 (58) 42.43 Forfeited (93) 31.41 — — Outstanding at December 31, 2021 1,245 37.00 522 37.59 Granted 608 48.14 29 54.76 Vested (571) 36.98 (45) 38.86 Forfeited (58) 42.21 (34) 43.06 Outstanding at December 31, 2022 1,224 $ 41.80 472 $ 44.11

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2022
Income Tax Disclosure [Abstract]
Schedule of Components of Income Tax Expense (Benefit)	The components of income tax expense (benefit) included on the consolidated statements of income for the years ended December 31, 2022, 2021, and 2020 are presented below: (in thousands) 2022 2021 2020 Current Federal $ 167,255 $ 153,911 $ 187,741 State 28,152 29,982 9,421 Total current income tax expense 195,407 183,893 197,162 Deferred Federal 11,570 28,873 (90,777) State (702) 16,127 4,585 Total deferred income tax expense (benefit) 10,868 45,000 (86,192) Total income tax expense $ 206,275 $ 228,893 $ 110,970
Schedule of Effective Income Tax Rate Reconciliation	Income tax expense as shown on the consolidated statements of income differed from the federal statutory rate for the years ended December 31, 2022, 2021, and 2020. A reconciliation of the differences is presented below: Years Ended December 31, (dollars in thousands) 2022 2021 2020 Income tax expense at statutory federal income tax rate $ 202,477 $ 207,765 $ 101,779 Increase (decrease) resulting from: State income tax expense, net of federal income tax benefit 21,981 38,452 11,168 Income not subject to tax (9,346) (10,455) (9,207) Low income housing tax credits and other tax benefits, net of amortization (6,336) (4,858) (2,611) FDIC premiums 5,517 4,111 4,744 General business tax credits (3,293) (3,727) (657) Excess tax benefit from share-based compensation (3,153) (3,084) 311 Executive compensation 2,152 1,096 1,501 Goodwill impairment — — 9,424 Other, net (3,724) (407) (5,482) Total income tax expense $ 206,275 $ 228,893 $ 110,970 Effective tax rate 21.4 % 23.1 % 22.9 %
Schedule of Deferred Tax Assets and Liabilities	The components of the Company's deferred tax assets and liabilities at December 31, 2022 and 2021 are presented below: (in thousands) 2022 2021 Deferred tax assets Net unrealized losses on investment securities available for sale and cash flow hedges $ 455,744 $ 19,261 Allowance for credit losses 121,941 112,180 Lease liability 107,818 102,412 Employee benefits and deferred compensation 42,746 36,701 Net operating loss carryforwards 23,590 23,897 Tax credit carryforwards 14,553 15,870 Unrealized losses on fair value hedges 11,101 — Miscellaneous accrued expenses 5,125 3,870 Fair value of investment securities and loans 2,019 6,439 Non-performing loan interest 2,695 2,621 Deferred revenue — 14,616 Other 6,585 6,182 Total gross deferred tax assets 793,917 344,049 Less valuation allowance (19,114) (19,003) Total deferred tax assets 774,803 325,046 Deferred tax liabilities Right-of-use asset (102,945) (98,773) Excess tax over financial statement depreciation (23,762) (27,355) Purchase accounting intangibles (15,224) (14,820) Deferred loan fees (15,901) — Unrealized gain on hedged liabilities (11,101) — Prepaid expense (4,947) (4,631) Other properties held for sale (2,828) (5,345) Other (2,778) (5,071) Total gross deferred tax liabilities (179,486) (155,995) Net deferred tax assets $ 595,317 $ 169,051
Schedule of Net Operating Loss and Tax Credit Carryforward	Federal and state NOLs and tax credit carryforwards as of December 31, 2022 are summarized in the following table on a tax effected basis. Tax Carryforwards As of December 31, 2022 (in thousands) Expiration Dates Deferred Valuation Allowance Net Deferred Tax Asset Balance Net operating losses - federal 2027-2033 $ 18,969 $ (15,544) $ 3,425 Net operating losses - states (1) 2027-2042 4,621 (3,570) 1,051 Other credits - states 2023-2032 14,553 — 14,553 (1) Included in this balance are state NOLs that can be carried forward indefinitely and have no expiration date.
Reconciliation of Unrecognized Tax Benefits	A reconciliation of the beginning and ending amount of unrecognized income tax benefits is as follows (unrecognized state income tax benefits are not adjusted for the federal income tax impact). Years Ended December 31, (in thousands) 2022 2021 2020 Balance at January 1, $ 25,104 $ 20,250 $ 20,994 Additions based on income tax positions related to current year 649 3,754 461 Additions for income tax positions of prior years (1) 247 1,379 147 Reductions for income tax positions of prior years (1,215) (200) (327) Statute of limitation expirations (2,002) (79) (820) Settlements (383) — (205) Balance at December 31, $ 22,400 $ 25,104 $ 20,250 (1) Includes deferred tax benefits that could reduce future tax liabilities.

Segment Reporting (Tables)

Segment Reporting (Tables)	12 Months Ended
	Dec. 31, 2022
Segment Reporting [Abstract]
Schedule of Segment Reporting Information, by Segment	The following tables present certain financial information for each reportable business segment for the years ended December 31, 2022, 2021, and 2020 and as of December 31, 2022 and 2021. The application and development of management reporting methodologies is a dynamic process and is subject to periodic enhancements. As these enhancements are made, financial results presented by each reportable business segment may be periodically revised. Loan and deposit transfers occur from time to time between reportable business segments primarily to maintain the migration of clients and relationship managers between segments. During the third quarter of 2022, public funds deposits (and related net interest income, FTP, and non-interest expense) in the Financial Management Services segment were transferred to the Wholesale Banking segment in order to maintain consistency so that all public funds deposits can be managed together in the same business segment. Prior periods have been adjusted accordingly. During the years ended December 31, 2022, 2021, and 2020 Treasury and Corporate Other's net interest income benefited from the recognition of PPP fees totaling $12.6 million, $79.2 million, and $46.0 million, respectively. During the year ended December 31, 2020, Synovus strategically repositioned the investment securities portfolio, which resulted in net gains of $78.9 million in the Treasury and Corporate Other segment. Additionally, during the year ended December 31, 2020, Synovus recognized a $44.9 million non-cash goodwill impairment charge representing all of the goodwill allocated to the Consumer Mortgage reporting unit (which is included in the FMS reportable segment) resulting from a combination of factors, including the extended duration of lower market valuations, high volumes in refinance activity that reduced mortgage yields, and the clarity around the FOMC's longer term policy actions designed to keep interest rates low. Year Ended December 31, 2022 (in thousands) Wholesale Banking Community Banking Consumer Banking Financial Management Services Treasury and Corporate Other Synovus Consolidated Net interest income $ 691,535 $ 412,660 $ 465,840 $ 69,539 $ 157,326 $ 1,796,900 Non-interest revenue 39,262 50,077 86,570 182,861 50,566 409,336 Non-interest expense 114,212 130,398 189,839 171,325 551,732 1,157,506 Pre-provision net revenue $ 616,585 $ 332,339 $ 362,571 $ 81,075 $ (343,840) $ 1,048,730 Year Ended December 31, 2021 (in thousands) Wholesale Banking Community Banking Consumer Banking Financial Management Services Treasury and Corporate Other Synovus Consolidated Net interest income $ 558,469 $ 399,261 $ 409,439 $ 78,647 $ 87,131 $ 1,532,947 Non-interest revenue 34,590 48,301 79,725 211,002 76,448 450,066 Non-interest expense 90,198 115,366 175,451 184,133 534,756 1,099,904 Pre-provision net revenue $ 502,861 $ 332,196 $ 313,713 $ 105,516 $ (371,177) $ 883,109 Year Ended December 31, 2020 (in thousands) Wholesale Banking Community Banking Consumer Banking Financial Management Services Treasury and Corporate Other Synovus Consolidated Net interest income $ 548,398 $ 403,535 $ 450,486 $ 79,116 $ 31,213 $ 1,512,748 Non-interest revenue 26,379 37,753 73,503 224,620 144,258 506,513 Non-interest expense 85,292 115,561 181,510 232,180 565,031 1,179,574 Pre-provision net revenue $ 489,485 $ 325,727 $ 342,479 $ 71,556 $ (389,560) $ 839,687 December 31, 2022 (dollars in thousands) Wholesale Banking Community Banking Consumer Banking Financial Management Services Treasury and Corporate Other Synovus Consolidated Loans, net of deferred fees and costs $ 25,865,667 $ 8,138,606 $ 2,933,504 $ 5,157,014 $ 1,621,562 $ 43,716,353 Deposits $ 12,942,732 $ 10,798,409 $ 18,561,521 $ 102,496 $ 6,466,401 $ 48,871,559 Full-time equivalent employees 337 624 1,503 768 1,795 5,027 December 31, 2021 (dollars in thousands) Wholesale Banking Community Banking Consumer Banking Financial Management Services Treasury and Corporate Other Synovus Consolidated Loans, net of deferred fees and costs $ 21,496,050 $ 8,231,451 $ 2,559,892 $ 4,994,494 $ 2,030,071 $ 39,311,958 Deposits $ 12,795,224 $ 12,557,631 $ 19,668,846 $ 401,969 $ 4,003,606 $ 49,427,276 Full-time equivalent employees 284 617 1,522 794 1,670 4,887

Condensed Financial Informati_2

Condensed Financial Information Of Synovus Financial Corp. (Parent Company Only) (Tables)	12 Months Ended
	Dec. 31, 2022
Condensed Financial Information Disclosure [Abstract]
Schedule of Condensed Balance Sheets	Condensed Balance Sheets December 31, (in thousands) 2022 2021 Assets Cash due from bank subsidiary $ 517,235 $ 389,071 Funds due from other depository institutions 7,250 9,277 Total cash, cash equivalents, and restricted cash 524,485 398,348 Investment in consolidated bank subsidiary, at equity 4,471,207 5,381,311 Investment in consolidated nonbank subsidiaries, at equity 92,349 69,712 Note receivable from bank subsidiary 100,000 100,000 Other assets 19,431 25,538 Total assets $ 5,207,472 $ 5,974,909 Liabilities and Shareholders' Equity Liabilities: Long-term debt $ 644,490 $ 607,334 Other liabilities 87,181 70,775 Total liabilities 731,671 678,109 Shareholders’ equity: Preferred stock 537,145 537,145 Common stock 170,141 169,384 Additional paid-in capital 3,920,346 3,894,109 Treasury stock (944,484) (931,497) Accumulated other comprehensive income (loss), net (1,442,117) (82,321) Retained earnings 2,234,770 1,709,980 Total shareholders’ equity 4,475,801 5,296,800 Total liabilities and shareholders’ equity $ 5,207,472 $ 5,974,909
Schedule of Condensed Statements of Income	Condensed Statements of Income Years Ended December 31, (in thousands) 2022 2021 2020 Income Cash dividends received from subsidiaries $ 350,000 $ 420,000 $ 547,500 Interest income 1,841 777 3,341 Other income (loss) (7,203) 1,070 4,966 Total income 344,638 421,847 555,807 Expense Interest expense 34,154 27,616 42,911 Other expense 17,804 10,300 10,584 Total expense 51,958 37,916 53,495 Income before income taxes and equity in undistributed income of subsidiaries 292,680 383,931 502,312 Allocated income tax benefit (16,667) (7,834) (12,202) Income before equity in undistributed income of subsidiaries 309,347 391,765 514,514 Equity in undistributed income (loss) of subsidiaries 448,555 368,702 (140,819) Net income 757,902 760,467 373,695 Dividends on preferred stock 33,163 33,163 33,163 Net income available to common shareholders $ 724,739 $ 727,304 $ 340,532
Schedule of Condensed Statements of Comprehensive Income	Condensed Statements of Comprehensive Income Years Ended December 31, 2022 2021 2020 (in thousands) Net of Tax Amount Net of Tax Amount Net of Tax Amount Net income $ 757,902 $ 760,467 $ 373,695 Other comprehensive gain (loss) of bank subsidiary (1,359,796) (240,956) 92,994 Other comprehensive income (loss) (1,359,796) (240,956) 92,994 Comprehensive income (loss) $ (601,894) $ 519,511 $ 466,689
Schedule of Condensed Statements of Cash Flows	Condensed Statements of Cash Flows Years Ended December 31, (in thousands) 2022 2021 2020 Operating Activities Net income $ 757,902 $ 760,467 $ 373,695 Adjustments to reconcile net income to net cash provided by (used in) operating activities: Equity in undistributed (income) loss of subsidiaries (448,555) (368,702) 140,819 Deferred income tax expense (benefit) 143 (7,296) 3,962 Net increase (decrease) in other liabilities 3,233 (2,082) 11,243 Net (increase) decrease in other assets 8,022 5,280 17,441 Other, net 825 928 (5,132) Net cash provided by (used in) operating activities 321,570 388,595 542,028 Investing Activities Proceeds from sales of equity securities — — 23,141 Increase in other investments (1,027) (10,000) — Net cash provided by (used in) investing activities (1,027) (10,000) 23,141 Financing Activities Dividends paid to common and preferred shareholders (229,311) (227,840) (223,130) Repurchase of common stock (12,987) (199,932) (16,246) Redemption of long-term debt (300,000) — (250,000) Proceeds from issuance of long-term debt, net 347,892 — — Other — (1,104) (1,552) Net cash provided by (used in) financing activities (194,406) (428,876) (490,928) Increase (decrease) in cash, cash equivalents, and restricted cash 126,137 (50,281) 74,241 Cash, cash equivalents, and restricted cash at beginning of year 398,348 448,629 374,388 Cash, cash equivalents, and restricted cash at end of year $ 524,485 $ 398,348 $ 448,629 See accompanying notes to the audited consolidated financial statements.

Summary of Significant Accoun_4

Summary of Significant Accounting Policies (Details) $ in Millions	12 Months Ended
	Dec. 31, 2022 USD ($) segment	Dec. 31, 2021 USD ($)
Basis Of Presentation [Line Items]
Restricted cash	$ 66.8	$ 65.1
Loan agreement, repayment performance, reasonable period of time	6 months
Troubled debt restructurings, extension of the maturity, term	1 year
Short-term deferrals, term	12 months
Financing receivable, allowance for credit losses, period beyond a reasonable forecast can be made	2 years
Financing receivable, allowance for credit losses, historical rates period	1 year
Number of reportable segments | segment	4
Award requisite service period	3 years
CDI
Basis Of Presentation [Line Items]
Finite-lived intangible asset, useful life	10 years
Level 3 | Fair Value, Measurements, Recurring | Other non-interest expense
Basis Of Presentation [Line Items]
Fair value adjustment on derivative	$ 6	$ 2.7
Minimum
Basis Of Presentation [Line Items]
Other intangible assets, useful life	8 years
Minimum | Buildings and improvements
Basis Of Presentation [Line Items]
Premises and equipment, useful life	10 years
Minimum | Furniture, equipment and software
Basis Of Presentation [Line Items]
Premises and equipment, useful life	3 years
Minimum | Software and Software Development Costs
Basis Of Presentation [Line Items]
Premises and equipment, useful life	3 years
Maximum
Basis Of Presentation [Line Items]
Other intangible assets, useful life	10 years
Maximum | Buildings and improvements
Basis Of Presentation [Line Items]
Premises and equipment, useful life	40 years
Maximum | Furniture, equipment and software
Basis Of Presentation [Line Items]
Premises and equipment, useful life	10 years
Maximum | Software and Software Development Costs
Basis Of Presentation [Line Items]
Premises and equipment, useful life	7 years

Investment Securities Availab_3

Investment Securities Available for Sale - Summary Of Available For Sale Investment Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 11,273,327	$ 10,991,506
Gross Unrealized Gains	2,560	66,427
Gross Unrealized Losses	(1,597,784)	(139,604)
Fair Value	9,678,103	10,918,329
U.S. Treasury securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	515,953	120,465
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(44,140)	(2,627)
Fair Value	471,813	117,838
U.S. Government agency securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	52,411	53,214
Gross Unrealized Gains	0	1,374
Gross Unrealized Losses	(3,613)	(387)
Fair Value	48,798	54,201
Mortgage-backed securities issued by U.S. Government agencies
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	904,593	790,329
Gross Unrealized Gains	1,624	768
Gross Unrealized Losses	(113,468)	(11,464)
Fair Value	792,749	779,633
Mortgage-backed securities issued by U.S. Government sponsored enterprises
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	8,144,374	8,063,890
Gross Unrealized Gains	936	50,491
Gross Unrealized Losses	(1,250,240)	(102,080)
Fair Value	6,895,070	8,012,301
Collateralized mortgage obligations issued by U.S. Government agencies or sponsored enterprises
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	769,498	951,691
Gross Unrealized Gains	0	4,658
Gross Unrealized Losses	(114,371)	(16,726)
Fair Value	655,127	939,623
Commercial mortgage-backed securities issued by U.S. Government agencies or sponsored enterprises
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	877,590	479,420
Gross Unrealized Gains	0	8,644
Gross Unrealized Losses	(71,645)	(6,320)
Fair Value	805,945	481,744
Asset-backed securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost		514,188
Gross Unrealized Gains		0
Gross Unrealized Losses		0
Fair Value		514,188
Corporate debt securities and other debt securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	8,908	18,309
Gross Unrealized Gains	0	492
Gross Unrealized Losses	(307)	0
Fair Value	$ 8,601	$ 18,801

Investment Securities Availab_4

Investment Securities Available for Sale - Narrative (Details)	Dec. 31, 2022 USD ($) security	Dec. 31, 2021 USD ($)
Financing Receivable, Impaired [Line Items]
Securities in a loss position for less than twelve months | security	213
Investment securities in a loss position for twelve months or longer | security	210
Allowance for credit loss | $	$ 0
Collateral Pledged
Financing Receivable, Impaired [Line Items]
Pledged to secure deposits | $	$ 4,470,000,000	$ 4,030,000,000

Investment Securities Availab_5

Investment Securities Available for Sale - Schedule Of Unrealized Loss On Investments (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, fair value	$ 2,523,310	$ 6,596,065
Less than 12 months, gross unrealized losses	(173,930)	(96,227)
12 months or longer, fair value	6,989,855	1,523,383
12 months or longer, gross unrealized losses	(1,423,854)	(43,377)
Total, fair value	9,513,165	8,119,448
Total, gross unrealized losses	(1,597,784)	(139,604)
U.S. Treasury securities
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, fair value	139,737	49,648
Less than 12 months, gross unrealized losses	(6,789)	(379)
12 months or longer, fair value	307,582	47,590
12 months or longer, gross unrealized losses	(37,351)	(2,248)
Total, fair value	447,319	97,238
Total, gross unrealized losses	(44,140)	(2,627)
U.S. Government agency securities
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, fair value	28,938	21,760
Less than 12 months, gross unrealized losses	(1,053)	(387)
12 months or longer, fair value	19,603	0
12 months or longer, gross unrealized losses	(2,560)	0
Total, fair value	48,541	21,760
Total, gross unrealized losses	(3,613)	(387)
Mortgage-backed securities issued by U.S. Government agencies
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, fair value	187,655	461,078
Less than 12 months, gross unrealized losses	(5,952)	(5,858)
12 months or longer, fair value	521,395	244,264
12 months or longer, gross unrealized losses	(107,516)	(5,606)
Total, fair value	709,050	705,342
Total, gross unrealized losses	(113,468)	(11,464)
Mortgage-backed securities issued by U.S. Government sponsored enterprises
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, fair value	1,473,348	5,729,476
Less than 12 months, gross unrealized losses	(120,135)	(82,671)
12 months or longer, fair value	5,365,233	643,758
12 months or longer, gross unrealized losses	(1,130,105)	(19,409)
Total, fair value	6,838,581	6,373,234
Total, gross unrealized losses	(1,250,240)	(102,080)
Collateralized mortgage obligations issued by U.S. Government agencies or sponsored enterprises
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, fair value	119,649	187,431
Less than 12 months, gross unrealized losses	(10,311)	(3,981)
12 months or longer, fair value	535,478	504,238
12 months or longer, gross unrealized losses	(104,060)	(12,745)
Total, fair value	655,127	691,669
Total, gross unrealized losses	(114,371)	(16,726)
Commercial mortgage-backed securities issued by U.S. Government agencies or sponsored enterprises
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, fair value	565,382	146,672
Less than 12 months, gross unrealized losses	(29,383)	(2,951)
12 months or longer, fair value	240,564	83,533
12 months or longer, gross unrealized losses	(42,262)	(3,369)
Total, fair value	805,946	230,205
Total, gross unrealized losses	(71,645)	$ (6,320)
Corporate debt securities and other debt securities
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, fair value	8,601
Less than 12 months, gross unrealized losses	(307)
12 months or longer, fair value	0
12 months or longer, gross unrealized losses	0
Total, fair value	8,601
Total, gross unrealized losses	$ (307)

Investment Securities Availab_6

Investment Securities Available for Sale - Amortized Cost And Estimated Fair Value By Contractual Maturity Of Investment Securities Available For Sale (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Amortized Cost
Amortized cost, within one year	$ 24,566
Amortized cost, 1 to 5 years	1,051,478
Amortized cost, 5 to 10 years	439,954
Amortized cost, more than 10 years	9,757,329
Amortized Cost	11,273,327	$ 10,991,506
Fair Value
Fair value, within one year	24,566
Fair value, 1 to 5 years	981,495
Fair value, 5 to 10 years	386,996
Fair value, more than 10 years	8,285,046
Total fair value	9,678,103	10,918,329
U.S. Treasury securities
Amortized Cost
Amortized cost, within one year	24,293
Amortized cost, 1 to 5 years	441,804
Amortized cost, 5 to 10 years	49,856
Amortized cost, more than 10 years	0
Amortized Cost	515,953	120,465
Fair Value
Fair value, within one year	24,293
Fair value, 1 to 5 years	407,430
Fair value, 5 to 10 years	40,090
Fair value, more than 10 years	0
Total fair value	471,813	117,838
U.S. Government agency securities
Amortized Cost
Amortized cost, within one year	273
Amortized cost, 1 to 5 years	22,148
Amortized cost, 5 to 10 years	29,990
Amortized cost, more than 10 years	0
Amortized Cost	52,411	53,214
Fair Value
Fair value, within one year	273
Fair value, 1 to 5 years	19,588
Fair value, 5 to 10 years	28,937
Fair value, more than 10 years	0
Total fair value	48,798	54,201
Mortgage-backed securities issued by U.S. Government agencies
Amortized Cost
Amortized cost, within one year	0
Amortized cost, 1 to 5 years	534
Amortized cost, 5 to 10 years	4
Amortized cost, more than 10 years	904,055
Amortized Cost	904,593	790,329
Fair Value
Fair value, within one year	0
Fair value, 1 to 5 years	517
Fair value, 5 to 10 years	4
Fair value, more than 10 years	792,228
Total fair value	792,749	779,633
Mortgage-backed securities issued by U.S. Government sponsored enterprises
Amortized Cost
Amortized cost, within one year	0
Amortized cost, 1 to 5 years	4,659
Amortized cost, 5 to 10 years	109,583
Amortized cost, more than 10 years	8,030,132
Amortized Cost	8,144,374	8,063,890
Fair Value
Fair value, within one year	0
Fair value, 1 to 5 years	4,451
Fair value, 5 to 10 years	102,400
Fair value, more than 10 years	6,788,219
Total fair value	6,895,070	8,012,301
Collateralized mortgage obligations issued by U.S. Government agencies or sponsored enterprises
Amortized Cost
Amortized cost, within one year	0
Amortized cost, 1 to 5 years	91
Amortized cost, 5 to 10 years	12,293
Amortized cost, more than 10 years	757,114
Amortized Cost	769,498	951,691
Fair Value
Fair value, within one year	0
Fair value, 1 to 5 years	88
Fair value, 5 to 10 years	11,808
Fair value, more than 10 years	643,231
Total fair value	655,127	939,623
Commercial mortgage-backed securities issued by U.S. Government agencies or sponsored enterprises
Amortized Cost
Amortized cost, within one year	0
Amortized cost, 1 to 5 years	573,334
Amortized cost, 5 to 10 years	238,228
Amortized cost, more than 10 years	66,028
Amortized Cost	877,590	479,420
Fair Value
Fair value, within one year	0
Fair value, 1 to 5 years	540,820
Fair value, 5 to 10 years	203,757
Fair value, more than 10 years	61,368
Total fair value	805,945	481,744
Corporate debt securities and other debt securities
Amortized Cost
Amortized cost, within one year	0
Amortized cost, 1 to 5 years	8,908
Amortized cost, 5 to 10 years	0
Amortized cost, more than 10 years	0
Amortized Cost	8,908	18,309
Fair Value
Fair value, within one year	0
Fair value, 1 to 5 years	8,601
Fair value, 5 to 10 years	0
Fair value, more than 10 years	0
Total fair value	$ 8,601	$ 18,801

Investment Securities Availab_7

Investment Securities Available for Sale - Summary Of Sales Transactions In The Investment Securities Available For Sale Portfolio (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Investments [Abstract]
Gross realized gains on sales	$ 0	$ 1,191	$ 85,375
Gross realized losses on sales	0	(1,990)	(6,444)
Investment securities gains (losses), net	$ 0	$ (799)	$ 78,931

Loans And Allowance For Loan _3

Loans And Allowance For Loan Losses - Schedule Of Current, Accruing Past Due And Nonaccrual Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Financing Receivable, Nonaccrual [Line Items]
Loans, net of deferred fees and costs	$ 43,716,353	$ 39,311,958
Non-accrual with an ALL	113,519	100,518
Non-accrual without an ALL	14,542	30,524
Commercial And Industrial
Financing Receivable, Nonaccrual [Line Items]
Loans, net of deferred fees and costs	22,066,656	19,622,924
Non-accrual with an ALL	57,507	45,064
Non-accrual without an ALL	11,904	27,919
Commercial And Industrial | Commercial, financial, and agricultural
Financing Receivable, Nonaccrual [Line Items]
Loans, net of deferred fees and costs	13,874,416	12,147,858
Non-accrual with an ALL	48,008	37,918
Non-accrual without an ALL	11,299	23,869
Commercial And Industrial | Owner-occupied
Financing Receivable, Nonaccrual [Line Items]
Loans, net of deferred fees and costs	8,192,240	7,475,066
Non-accrual with an ALL	9,499	7,146
Non-accrual without an ALL	605	4,050
Commercial Real Estate
Financing Receivable, Nonaccrual [Line Items]
Loans, net of deferred fees and costs	12,650,313	11,015,111
Non-accrual with an ALL	5,115	9,726
Non-accrual without an ALL	2,638	2,605
Commercial Real Estate | Investment properties
Financing Receivable, Nonaccrual [Line Items]
Loans, net of deferred fees and costs	11,644,047	9,902,776
Non-accrual with an ALL	1,785	3,273
Non-accrual without an ALL	1,688	2,577
Commercial Real Estate | 1-4 family properties
Financing Receivable, Nonaccrual [Line Items]
Loans, net of deferred fees and costs	616,933	645,469
Non-accrual with an ALL	2,172	4,535
Non-accrual without an ALL	950	28
Commercial Real Estate | Land and development
Financing Receivable, Nonaccrual [Line Items]
Loans, net of deferred fees and costs	389,333	466,866
Non-accrual with an ALL	1,158	1,918
Non-accrual without an ALL	0	0
Consumer
Financing Receivable, Nonaccrual [Line Items]
Loans, net of deferred fees and costs	8,999,384	8,673,923
Non-accrual with an ALL	50,897	45,728
Non-accrual without an ALL	0	0
Consumer | Consumer mortgages
Financing Receivable, Nonaccrual [Line Items]
Loans, net of deferred fees and costs	5,214,443	5,068,998
Non-accrual with an ALL	36,847	29,078
Non-accrual without an ALL	0	0
Consumer | Home equity
Financing Receivable, Nonaccrual [Line Items]
Loans, net of deferred fees and costs	1,757,038	1,361,419
Non-accrual with an ALL	6,830	9,773
Non-accrual without an ALL	0	0
Consumer | Credit cards
Financing Receivable, Nonaccrual [Line Items]
Loans, net of deferred fees and costs	203,612	204,172
Non-accrual with an ALL	0	0
Non-accrual without an ALL	0	0
Consumer | Other consumer loans
Financing Receivable, Nonaccrual [Line Items]
Loans, net of deferred fees and costs	1,824,291	2,039,334
Non-accrual with an ALL	7,220	6,877
Non-accrual without an ALL	0	0
Current
Financing Receivable, Nonaccrual [Line Items]
Loans, net of deferred fees and costs	43,522,724	39,123,351
Current | Commercial And Industrial
Financing Receivable, Nonaccrual [Line Items]
Loans, net of deferred fees and costs	21,980,288	19,528,924
Current | Commercial And Industrial | Commercial, financial, and agricultural
Financing Receivable, Nonaccrual [Line Items]
Loans, net of deferred fees and costs	13,798,639	12,068,740
Current | Commercial And Industrial | Owner-occupied
Financing Receivable, Nonaccrual [Line Items]
Loans, net of deferred fees and costs	8,181,649	7,460,184
Current | Commercial Real Estate
Financing Receivable, Nonaccrual [Line Items]
Loans, net of deferred fees and costs	12,640,761	10,998,504
Current | Commercial Real Estate | Investment properties
Financing Receivable, Nonaccrual [Line Items]
Loans, net of deferred fees and costs	11,639,614	9,894,924
Current | Commercial Real Estate | 1-4 family properties
Financing Receivable, Nonaccrual [Line Items]
Loans, net of deferred fees and costs	613,049	639,631
Current | Commercial Real Estate | Land and development
Financing Receivable, Nonaccrual [Line Items]
Loans, net of deferred fees and costs	388,098	463,949
Current | Consumer
Financing Receivable, Nonaccrual [Line Items]
Loans, net of deferred fees and costs	8,901,675	8,595,923
Current | Consumer | Consumer mortgages
Financing Receivable, Nonaccrual [Line Items]
Loans, net of deferred fees and costs	5,163,417	5,033,537
Current | Consumer | Home equity
Financing Receivable, Nonaccrual [Line Items]
Loans, net of deferred fees and costs	1,742,412	1,349,027
Current | Consumer | Credit cards
Financing Receivable, Nonaccrual [Line Items]
Loans, net of deferred fees and costs	200,047	201,929
Current | Consumer | Other consumer loans
Financing Receivable, Nonaccrual [Line Items]
Loans, net of deferred fees and costs	1,795,799	2,011,430
Accruing 30-89 Days Past Due
Financing Receivable, Nonaccrual [Line Items]
Loans, net of deferred fees and costs	62,195	50,795
Accruing 30-89 Days Past Due | Commercial And Industrial
Financing Receivable, Nonaccrual [Line Items]
Loans, net of deferred fees and costs	15,520	17,005
Accruing 30-89 Days Past Due | Commercial And Industrial | Commercial, financial, and agricultural
Financing Receivable, Nonaccrual [Line Items]
Loans, net of deferred fees and costs	15,033	13,378
Accruing 30-89 Days Past Due | Commercial And Industrial | Owner-occupied
Financing Receivable, Nonaccrual [Line Items]
Loans, net of deferred fees and costs	487	3,627
Accruing 30-89 Days Past Due | Commercial Real Estate
Financing Receivable, Nonaccrual [Line Items]
Loans, net of deferred fees and costs	1,799	3,312
Accruing 30-89 Days Past Due | Commercial Real Estate | Investment properties
Financing Receivable, Nonaccrual [Line Items]
Loans, net of deferred fees and costs	960	1,285
Accruing 30-89 Days Past Due | Commercial Real Estate | 1-4 family properties
Financing Receivable, Nonaccrual [Line Items]
Loans, net of deferred fees and costs	762	1,182
Accruing 30-89 Days Past Due | Commercial Real Estate | Land and development
Financing Receivable, Nonaccrual [Line Items]
Loans, net of deferred fees and costs	77	845
Accruing 30-89 Days Past Due | Consumer
Financing Receivable, Nonaccrual [Line Items]
Loans, net of deferred fees and costs	44,876	30,478
Accruing 30-89 Days Past Due | Consumer | Consumer mortgages
Financing Receivable, Nonaccrual [Line Items]
Loans, net of deferred fees and costs	13,969	6,257
Accruing 30-89 Days Past Due | Consumer | Home equity
Financing Receivable, Nonaccrual [Line Items]
Loans, net of deferred fees and costs	7,795	2,619
Accruing 30-89 Days Past Due | Consumer | Credit cards
Financing Receivable, Nonaccrual [Line Items]
Loans, net of deferred fees and costs	1,843	1,233
Accruing 30-89 Days Past Due | Consumer | Other consumer loans
Financing Receivable, Nonaccrual [Line Items]
Loans, net of deferred fees and costs	21,269	20,369
Accruing 90 Days or Greater Past Due
Financing Receivable, Nonaccrual [Line Items]
Loans, net of deferred fees and costs	3,373	6,770
Accruing 90 Days or Greater Past Due | Commercial And Industrial
Financing Receivable, Nonaccrual [Line Items]
Loans, net of deferred fees and costs	1,437	4,012
Accruing 90 Days or Greater Past Due | Commercial And Industrial | Commercial, financial, and agricultural
Financing Receivable, Nonaccrual [Line Items]
Loans, net of deferred fees and costs	1,437	3,953
Accruing 90 Days or Greater Past Due | Commercial And Industrial | Owner-occupied
Financing Receivable, Nonaccrual [Line Items]
Loans, net of deferred fees and costs	0	59
Accruing 90 Days or Greater Past Due | Commercial Real Estate
Financing Receivable, Nonaccrual [Line Items]
Loans, net of deferred fees and costs	0	964
Accruing 90 Days or Greater Past Due | Commercial Real Estate | Investment properties
Financing Receivable, Nonaccrual [Line Items]
Loans, net of deferred fees and costs	0	717
Accruing 90 Days or Greater Past Due | Commercial Real Estate | 1-4 family properties
Financing Receivable, Nonaccrual [Line Items]
Loans, net of deferred fees and costs	0	93
Accruing 90 Days or Greater Past Due | Commercial Real Estate | Land and development
Financing Receivable, Nonaccrual [Line Items]
Loans, net of deferred fees and costs	0	154
Accruing 90 Days or Greater Past Due | Consumer
Financing Receivable, Nonaccrual [Line Items]
Loans, net of deferred fees and costs	1,936	1,794
Accruing 90 Days or Greater Past Due | Consumer | Consumer mortgages
Financing Receivable, Nonaccrual [Line Items]
Loans, net of deferred fees and costs	210	126
Accruing 90 Days or Greater Past Due | Consumer | Home equity
Financing Receivable, Nonaccrual [Line Items]
Loans, net of deferred fees and costs	1	0
Accruing 90 Days or Greater Past Due | Consumer | Credit cards
Financing Receivable, Nonaccrual [Line Items]
Loans, net of deferred fees and costs	1,722	1,010
Accruing 90 Days or Greater Past Due | Consumer | Other consumer loans
Financing Receivable, Nonaccrual [Line Items]
Loans, net of deferred fees and costs	3	658
Total Accruing Past Due
Financing Receivable, Nonaccrual [Line Items]
Loans, net of deferred fees and costs	65,568	57,565
Total Accruing Past Due | Commercial And Industrial
Financing Receivable, Nonaccrual [Line Items]
Loans, net of deferred fees and costs	16,957	21,017
Total Accruing Past Due | Commercial And Industrial | Commercial, financial, and agricultural
Financing Receivable, Nonaccrual [Line Items]
Loans, net of deferred fees and costs	16,470	17,331
Total Accruing Past Due | Commercial And Industrial | Owner-occupied
Financing Receivable, Nonaccrual [Line Items]
Loans, net of deferred fees and costs	487	3,686
Total Accruing Past Due | Commercial Real Estate
Financing Receivable, Nonaccrual [Line Items]
Loans, net of deferred fees and costs	1,799	4,276
Total Accruing Past Due | Commercial Real Estate | Investment properties
Financing Receivable, Nonaccrual [Line Items]
Loans, net of deferred fees and costs	960	2,002
Total Accruing Past Due | Commercial Real Estate | 1-4 family properties
Financing Receivable, Nonaccrual [Line Items]
Loans, net of deferred fees and costs	762	1,275
Total Accruing Past Due | Commercial Real Estate | Land and development
Financing Receivable, Nonaccrual [Line Items]
Loans, net of deferred fees and costs	77	999
Total Accruing Past Due | Consumer
Financing Receivable, Nonaccrual [Line Items]
Loans, net of deferred fees and costs	46,812	32,272
Total Accruing Past Due | Consumer | Consumer mortgages
Financing Receivable, Nonaccrual [Line Items]
Loans, net of deferred fees and costs	14,179	6,383
Total Accruing Past Due | Consumer | Home equity
Financing Receivable, Nonaccrual [Line Items]
Loans, net of deferred fees and costs	7,796	2,619
Total Accruing Past Due | Consumer | Credit cards
Financing Receivable, Nonaccrual [Line Items]
Loans, net of deferred fees and costs	3,565	2,243
Total Accruing Past Due | Consumer | Other consumer loans
Financing Receivable, Nonaccrual [Line Items]
Loans, net of deferred fees and costs	$ 21,272	$ 21,027

Loans And Allowance For Loan _4

Loans And Allowance For Loan Losses - Narrative (Details)	12 Months Ended
	Dec. 31, 2022 USD ($) contract	Dec. 31, 2021 USD ($) contract	Dec. 31, 2020 USD ($) contract	Dec. 31, 2019 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable, impaired, interest lost on nonaccrual loans	$ 9,000,000	$ 12,000,000
Cash-basis interest income recognized	3,000,000	2,400,000
Financing receivable, change in method, credit loss expense (reversal)			$ 18,300,000
Transfers to held for sale			1,430,000,000
Financing receivable, allowance for credit loss	443,424,000	427,597,000	605,736,000	$ 281,402,000
Reserve for unfunded commitments	57,500,000
All financing receivable, allowance for credit loss	500,900,000	469,500,000
Provision for (reversal of) loan losses	$ 31,400,000
ACL to loans ratio	1.15%
Decrease in ACL to loans ratio	0.0004
Allowance for credit loss, reasonable and supportable forecast period	2 years
Allowance for credit loss, straight-line basis historical period	1 year
Modifications, post-modification recorded investment	$ 131,186,000	48,932,000	$ 76,615,000
Commitments to lend additional funds to TDRs		$ 0
Troubled Debt Restructuring That Subsequently Defaulted
Accounts, Notes, Loans and Financing Receivable [Line Items]
Subsequent default, number of contracts | contract	5,000	8	7
Modifications, post-modification recorded investment	$ 1,000,000	$ 978,000	$ 21,700,000
Baseline
Accounts, Notes, Loans and Financing Receivable [Line Items]
Estimated unemployment rate	4.70%	4.40%
Unfunded Loan Commitment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, allowance for credit loss		$ 41,900,000
Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Retail loan substandard period (in days)	90 days
Loss And Charged Off
Accounts, Notes, Loans and Financing Receivable [Line Items]
Retail loan charge off (in days)	120 days
Commercial And Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Modifications, post-modification recorded investment	$ 105,610,000	27,618,000	$ 28,917,000
Commercial And Industrial | Small Business Administration (SBA), CARES Act, Paycheck Protection Program
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	14,700,000	399,600,000
Asset Pledged as Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 16,090,000,000	$ 14,190,000,000

Loans And Allowance For Loan _5

Loans And Allowance For Loan Losses - Loan Portfolio Credit Exposure (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	$ 7,049,731	$ 9,402,827
Term loans amortized cost basis by origination, before current fiscal year	8,851,511	6,558,797
Term loans amortized cost basis by origination, two years before current fiscal year	5,710,982	4,899,572
Term loans amortized cost basis by origination, three years before current fiscal year	3,604,052	3,085,986
Term loans amortized cost basis by origination, four years before current fiscal year	2,412,071	2,559,570
Term loans amortized cost basis by origination, prior	5,209,357	4,742,507
Total	$ 43,716,353	$ 39,311,958
Allowance for loan and lease losses, number of past due days	120 days	120 days
Allowance for loan and lease losses, number of past due days threshold for charge-off	181 days	181 days
Maximum
Financing Receivable, Credit Quality Indicator [Line Items]
Allowance for loan and lease losses, percent of loan amount		50%
Revolving Loans Amortized Cost Basis
Financing Receivable, Credit Quality Indicator [Line Items]
Total	$ 10,323,287	$ 7,867,710
Revolving Loans Converted to Term Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total	555,362	194,989
Commercial And Industrial
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	2,855,387	4,200,393
Term loans amortized cost basis by origination, before current fiscal year	3,639,332	2,696,735
Term loans amortized cost basis by origination, two years before current fiscal year	2,286,853	2,112,628
Term loans amortized cost basis by origination, three years before current fiscal year	1,762,363	1,549,445
Term loans amortized cost basis by origination, four years before current fiscal year	1,281,244	1,184,980
Term loans amortized cost basis by origination, prior	2,252,438	2,122,625
Total	22,066,656	19,622,924
Commercial And Industrial | Revolving Loans Amortized Cost Basis
Financing Receivable, Credit Quality Indicator [Line Items]
Total	7,942,578	5,713,276
Commercial And Industrial | Revolving Loans Converted to Term Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total	46,461	42,842
Commercial And Industrial | Commercial, financial, and agricultural
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	1,294,696	2,416,022
Term loans amortized cost basis by origination, before current fiscal year	1,943,422	1,398,694
Term loans amortized cost basis by origination, two years before current fiscal year	1,060,864	981,693
Term loans amortized cost basis by origination, three years before current fiscal year	831,510	637,246
Term loans amortized cost basis by origination, four years before current fiscal year	560,122	451,760
Term loans amortized cost basis by origination, prior	1,061,683	944,049
Total	13,874,416	12,147,858
Commercial And Industrial | Commercial, financial, and agricultural | Revolving Loans Amortized Cost Basis
Financing Receivable, Credit Quality Indicator [Line Items]
Total	7,075,658	5,275,552
Commercial And Industrial | Commercial, financial, and agricultural | Revolving Loans Converted to Term Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total	46,461	42,842
Commercial And Industrial | Owner-occupied
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	1,560,691	1,784,371
Term loans amortized cost basis by origination, before current fiscal year	1,695,910	1,298,041
Term loans amortized cost basis by origination, two years before current fiscal year	1,225,989	1,130,935
Term loans amortized cost basis by origination, three years before current fiscal year	930,853	912,199
Term loans amortized cost basis by origination, four years before current fiscal year	721,122	733,220
Term loans amortized cost basis by origination, prior	1,190,755	1,178,576
Total	8,192,240	7,475,066
Commercial And Industrial | Owner-occupied | Revolving Loans Amortized Cost Basis
Financing Receivable, Credit Quality Indicator [Line Items]
Total	866,920	437,724
Commercial And Industrial | Owner-occupied | Revolving Loans Converted to Term Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total	0	0
Commercial Real Estate
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	3,050,240	3,271,317
Term loans amortized cost basis by origination, before current fiscal year	3,488,664	1,591,162
Term loans amortized cost basis by origination, two years before current fiscal year	1,600,213	2,079,334
Term loans amortized cost basis by origination, three years before current fiscal year	1,311,330	1,256,576
Term loans amortized cost basis by origination, four years before current fiscal year	910,001	888,314
Term loans amortized cost basis by origination, prior	1,674,752	1,494,335
Total	12,650,313	11,015,111
Commercial Real Estate | Revolving Loans Amortized Cost Basis
Financing Receivable, Credit Quality Indicator [Line Items]
Total	615,113	434,073
Commercial Real Estate | Revolving Loans Converted to Term Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total	0	0
Commercial Real Estate | Investment properties
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	2,680,012	2,831,606
Term loans amortized cost basis by origination, before current fiscal year	3,248,674	1,463,829
Term loans amortized cost basis by origination, two years before current fiscal year	1,532,406	1,946,374
Term loans amortized cost basis by origination, three years before current fiscal year	1,237,232	1,140,792
Term loans amortized cost basis by origination, four years before current fiscal year	833,422	800,794
Term loans amortized cost basis by origination, prior	1,550,043	1,385,671
Total	11,644,047	9,902,776
Commercial Real Estate | Investment properties | Revolving Loans Amortized Cost Basis
Financing Receivable, Credit Quality Indicator [Line Items]
Total	562,258	333,710
Commercial Real Estate | Investment properties | Revolving Loans Converted to Term Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total	0	0
Commercial Real Estate | 1-4 family properties
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	249,728	297,273
Term loans amortized cost basis by origination, before current fiscal year	155,610	83,183
Term loans amortized cost basis by origination, two years before current fiscal year	44,859	53,146
Term loans amortized cost basis by origination, three years before current fiscal year	33,987	47,247
Term loans amortized cost basis by origination, four years before current fiscal year	27,889	49,546
Term loans amortized cost basis by origination, prior	57,083	59,441
Total	616,933	645,469
Commercial Real Estate | 1-4 family properties | Revolving Loans Amortized Cost Basis
Financing Receivable, Credit Quality Indicator [Line Items]
Total	47,777	55,633
Commercial Real Estate | 1-4 family properties | Revolving Loans Converted to Term Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total	0	0
Commercial Real Estate | Land and development
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	120,500	142,438
Term loans amortized cost basis by origination, before current fiscal year	84,380	44,150
Term loans amortized cost basis by origination, two years before current fiscal year	22,948	79,814
Term loans amortized cost basis by origination, three years before current fiscal year	40,111	68,537
Term loans amortized cost basis by origination, four years before current fiscal year	48,690	37,974
Term loans amortized cost basis by origination, prior	67,626	49,223
Total	389,333	466,866
Commercial Real Estate | Land and development | Revolving Loans Amortized Cost Basis
Financing Receivable, Credit Quality Indicator [Line Items]
Total	5,078	44,730
Commercial Real Estate | Land and development | Revolving Loans Converted to Term Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total	0	0
Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	1,144,104	1,931,117
Term loans amortized cost basis by origination, before current fiscal year	1,723,515	2,270,900
Term loans amortized cost basis by origination, two years before current fiscal year	1,823,916	707,610
Term loans amortized cost basis by origination, three years before current fiscal year	530,359	279,965
Term loans amortized cost basis by origination, four years before current fiscal year	220,826	486,276
Term loans amortized cost basis by origination, prior	1,282,167	1,125,547
Total	8,999,384	8,673,923
Consumer | Revolving Loans Amortized Cost Basis
Financing Receivable, Credit Quality Indicator [Line Items]
Total	1,765,596	1,720,361
Consumer | Revolving Loans Converted to Term Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total	508,901	152,147
Consumer | Consumer mortgages
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	858,642	1,276,030
Term loans amortized cost basis by origination, before current fiscal year	1,195,104	1,560,413
Term loans amortized cost basis by origination, two years before current fiscal year	1,364,584	578,415
Term loans amortized cost basis by origination, three years before current fiscal year	467,887	228,664
Term loans amortized cost basis by origination, four years before current fiscal year	189,001	398,209
Term loans amortized cost basis by origination, prior	1,139,082	1,027,012
Total	5,214,443	5,068,998
Consumer | Consumer mortgages | Revolving Loans Amortized Cost Basis
Financing Receivable, Credit Quality Indicator [Line Items]
Total	143	255
Consumer | Consumer mortgages | Revolving Loans Converted to Term Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total	0	0
Consumer | Home equity
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	0	0
Term loans amortized cost basis by origination, before current fiscal year	0	0
Term loans amortized cost basis by origination, two years before current fiscal year	0	0
Term loans amortized cost basis by origination, three years before current fiscal year	0	0
Term loans amortized cost basis by origination, four years before current fiscal year	0	0
Term loans amortized cost basis by origination, prior	0	0
Total	1,757,038	1,361,419
Consumer | Home equity | Revolving Loans Amortized Cost Basis
Financing Receivable, Credit Quality Indicator [Line Items]
Total	1,248,137	1,209,272
Consumer | Home equity | Revolving Loans Converted to Term Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total	508,901	152,147
Consumer | Credit cards
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	0	0
Term loans amortized cost basis by origination, before current fiscal year	0	0
Term loans amortized cost basis by origination, two years before current fiscal year	0	0
Term loans amortized cost basis by origination, three years before current fiscal year	0	0
Term loans amortized cost basis by origination, four years before current fiscal year	0	0
Term loans amortized cost basis by origination, prior	0	0
Total	203,612	204,172
Consumer | Credit cards | Revolving Loans Amortized Cost Basis
Financing Receivable, Credit Quality Indicator [Line Items]
Total	203,612	204,172
Consumer | Credit cards | Revolving Loans Converted to Term Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total	0	0
Consumer | Other consumer loans
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	285,462	655,087
Term loans amortized cost basis by origination, before current fiscal year	528,411	710,487
Term loans amortized cost basis by origination, two years before current fiscal year	459,332	129,195
Term loans amortized cost basis by origination, three years before current fiscal year	62,472	51,301
Term loans amortized cost basis by origination, four years before current fiscal year	31,825	88,067
Term loans amortized cost basis by origination, prior	143,085	98,535
Total	1,824,291	2,039,334
Consumer | Other consumer loans | Revolving Loans Amortized Cost Basis
Financing Receivable, Credit Quality Indicator [Line Items]
Total	313,704	306,662
Consumer | Other consumer loans | Revolving Loans Converted to Term Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total	0	0
Pass | Commercial And Industrial | Commercial, financial, and agricultural
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	1,276,814	2,396,717
Term loans amortized cost basis by origination, before current fiscal year	1,911,353	1,332,549
Term loans amortized cost basis by origination, two years before current fiscal year	1,009,230	922,396
Term loans amortized cost basis by origination, three years before current fiscal year	782,100	607,918
Term loans amortized cost basis by origination, four years before current fiscal year	536,001	433,045
Term loans amortized cost basis by origination, prior	1,037,488	903,995
Total	13,458,804	11,791,410
Pass | Commercial And Industrial | Commercial, financial, and agricultural | Revolving Loans Amortized Cost Basis
Financing Receivable, Credit Quality Indicator [Line Items]
Total	6,862,070	5,151,981
Pass | Commercial And Industrial | Commercial, financial, and agricultural | Revolving Loans Converted to Term Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total	43,748	42,809
Pass | Commercial And Industrial | Owner-occupied
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	1,537,016	1,776,086
Term loans amortized cost basis by origination, before current fiscal year	1,675,524	1,276,797
Term loans amortized cost basis by origination, two years before current fiscal year	1,137,889	1,117,825
Term loans amortized cost basis by origination, three years before current fiscal year	909,525	858,721
Term loans amortized cost basis by origination, four years before current fiscal year	664,734	708,942
Term loans amortized cost basis by origination, prior	1,103,500	1,116,766
Total	7,895,108	7,292,861
Pass | Commercial And Industrial | Owner-occupied | Revolving Loans Amortized Cost Basis
Financing Receivable, Credit Quality Indicator [Line Items]
Total	866,920	437,724
Pass | Commercial And Industrial | Owner-occupied | Revolving Loans Converted to Term Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total	0	0
Pass | Commercial Real Estate | Investment properties
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	2,671,660	2,823,978
Term loans amortized cost basis by origination, before current fiscal year	3,245,669	1,463,503
Term loans amortized cost basis by origination, two years before current fiscal year	1,532,230	1,905,534
Term loans amortized cost basis by origination, three years before current fiscal year	1,220,974	1,019,765
Term loans amortized cost basis by origination, four years before current fiscal year	775,747	738,036
Term loans amortized cost basis by origination, prior	1,543,724	1,317,634
Total	11,531,122	9,547,147
Pass | Commercial Real Estate | Investment properties | Revolving Loans Amortized Cost Basis
Financing Receivable, Credit Quality Indicator [Line Items]
Total	541,118	278,697
Pass | Commercial Real Estate | Investment properties | Revolving Loans Converted to Term Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total	0	0
Pass | Commercial Real Estate | 1-4 family properties
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	248,418	295,082
Term loans amortized cost basis by origination, before current fiscal year	154,181	82,976
Term loans amortized cost basis by origination, two years before current fiscal year	44,032	51,939
Term loans amortized cost basis by origination, three years before current fiscal year	33,246	43,025
Term loans amortized cost basis by origination, four years before current fiscal year	27,053	49,057
Term loans amortized cost basis by origination, prior	55,543	57,025
Total	610,205	634,692
Pass | Commercial Real Estate | 1-4 family properties | Revolving Loans Amortized Cost Basis
Financing Receivable, Credit Quality Indicator [Line Items]
Total	47,732	55,588
Pass | Commercial Real Estate | 1-4 family properties | Revolving Loans Converted to Term Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total	0	0
Pass | Commercial Real Estate | Land and development
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	119,801	141,614
Term loans amortized cost basis by origination, before current fiscal year	84,055	42,201
Term loans amortized cost basis by origination, two years before current fiscal year	21,984	77,868
Term loans amortized cost basis by origination, three years before current fiscal year	39,484	34,058
Term loans amortized cost basis by origination, four years before current fiscal year	18,600	37,167
Term loans amortized cost basis by origination, prior	64,854	44,989
Total	353,856	422,627
Pass | Commercial Real Estate | Land and development | Revolving Loans Amortized Cost Basis
Financing Receivable, Credit Quality Indicator [Line Items]
Total	5,078	44,730
Pass | Commercial Real Estate | Land and development | Revolving Loans Converted to Term Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total	0	0
Pass | Consumer | Consumer mortgages
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	857,489	1,274,999
Term loans amortized cost basis by origination, before current fiscal year	1,188,652	1,556,733
Term loans amortized cost basis by origination, two years before current fiscal year	1,356,065	572,467
Term loans amortized cost basis by origination, three years before current fiscal year	458,441	216,277
Term loans amortized cost basis by origination, four years before current fiscal year	182,834	392,492
Term loans amortized cost basis by origination, prior	1,118,686	1,001,771
Total	5,162,310	5,014,994
Pass | Consumer | Consumer mortgages | Revolving Loans Amortized Cost Basis
Financing Receivable, Credit Quality Indicator [Line Items]
Total	143	255
Pass | Consumer | Consumer mortgages | Revolving Loans Converted to Term Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total	0	0
Pass | Consumer | Home equity
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	0	0
Term loans amortized cost basis by origination, before current fiscal year	0	0
Term loans amortized cost basis by origination, two years before current fiscal year	0	0
Term loans amortized cost basis by origination, three years before current fiscal year	0	0
Term loans amortized cost basis by origination, four years before current fiscal year	0	0
Term loans amortized cost basis by origination, prior	0	0
Total	1,745,473	1,346,191
Pass | Consumer | Home equity | Revolving Loans Amortized Cost Basis
Financing Receivable, Credit Quality Indicator [Line Items]
Total	1,241,201	1,199,556
Pass | Consumer | Home equity | Revolving Loans Converted to Term Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total	504,272	146,635
Pass | Consumer | Credit cards
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	0	0
Term loans amortized cost basis by origination, before current fiscal year	0	0
Term loans amortized cost basis by origination, two years before current fiscal year	0	0
Term loans amortized cost basis by origination, three years before current fiscal year	0	0
Term loans amortized cost basis by origination, four years before current fiscal year	0	0
Term loans amortized cost basis by origination, prior	0	0
Total	201,898	203,161
Pass | Consumer | Credit cards | Revolving Loans Amortized Cost Basis
Financing Receivable, Credit Quality Indicator [Line Items]
Total	201,898	203,161
Pass | Consumer | Credit cards | Revolving Loans Converted to Term Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total	0	0
Pass | Consumer | Other consumer loans
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	284,045	654,419
Term loans amortized cost basis by origination, before current fiscal year	524,601	708,937
Term loans amortized cost basis by origination, two years before current fiscal year	457,684	127,131
Term loans amortized cost basis by origination, three years before current fiscal year	61,760	49,993
Term loans amortized cost basis by origination, four years before current fiscal year	31,662	86,175
Term loans amortized cost basis by origination, prior	142,189	97,765
Total	1,815,506	2,030,920
Pass | Consumer | Other consumer loans | Revolving Loans Amortized Cost Basis
Financing Receivable, Credit Quality Indicator [Line Items]
Total	313,565	306,500
Pass | Consumer | Other consumer loans | Revolving Loans Converted to Term Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total	0	0
Special Mention | Commercial And Industrial | Commercial, financial, and agricultural
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	4,131	2,731
Term loans amortized cost basis by origination, before current fiscal year	14,289	15,166
Term loans amortized cost basis by origination, two years before current fiscal year	12,691	17,571
Term loans amortized cost basis by origination, three years before current fiscal year	6,637	10,433
Term loans amortized cost basis by origination, four years before current fiscal year	5,716	2,242
Term loans amortized cost basis by origination, prior	2,777	2,489
Total	129,840	122,628
Special Mention | Commercial And Industrial | Commercial, financial, and agricultural | Revolving Loans Amortized Cost Basis
Financing Receivable, Credit Quality Indicator [Line Items]
Total	81,889	71,996
Special Mention | Commercial And Industrial | Commercial, financial, and agricultural | Revolving Loans Converted to Term Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total	1,710	0
Special Mention | Commercial And Industrial | Owner-occupied
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	4,238	702
Term loans amortized cost basis by origination, before current fiscal year	6,760	19,950
Term loans amortized cost basis by origination, two years before current fiscal year	24,175	4,724
Term loans amortized cost basis by origination, three years before current fiscal year	13,913	10,202
Term loans amortized cost basis by origination, four years before current fiscal year	5,024	18,109
Term loans amortized cost basis by origination, prior	69,500	36,481
Total	123,610	90,168
Special Mention | Commercial And Industrial | Owner-occupied | Revolving Loans Amortized Cost Basis
Financing Receivable, Credit Quality Indicator [Line Items]
Total	0	0
Special Mention | Commercial And Industrial | Owner-occupied | Revolving Loans Converted to Term Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total	0	0
Special Mention | Commercial Real Estate | Investment properties
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	2,379	6,163
Term loans amortized cost basis by origination, before current fiscal year	1,550	0
Term loans amortized cost basis by origination, two years before current fiscal year	0	32,290
Term loans amortized cost basis by origination, three years before current fiscal year	14,570	63,900
Term loans amortized cost basis by origination, four years before current fiscal year	5,908	59,194
Term loans amortized cost basis by origination, prior	2,388	44,532
Total	26,941	239,738
Special Mention | Commercial Real Estate | Investment properties | Revolving Loans Amortized Cost Basis
Financing Receivable, Credit Quality Indicator [Line Items]
Total	146	33,659
Special Mention | Commercial Real Estate | Investment properties | Revolving Loans Converted to Term Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total	0	0
Special Mention | Commercial Real Estate | 1-4 family properties
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	1	192
Term loans amortized cost basis by origination, before current fiscal year	0	207
Term loans amortized cost basis by origination, two years before current fiscal year	752	641
Term loans amortized cost basis by origination, three years before current fiscal year	0	0
Term loans amortized cost basis by origination, four years before current fiscal year	0	0
Term loans amortized cost basis by origination, prior	297	239
Total	1,050	1,279
Special Mention | Commercial Real Estate | 1-4 family properties | Revolving Loans Amortized Cost Basis
Financing Receivable, Credit Quality Indicator [Line Items]
Total	0	0
Special Mention | Commercial Real Estate | 1-4 family properties | Revolving Loans Converted to Term Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total	0	0
Special Mention | Commercial Real Estate | Land and development
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	0	0
Term loans amortized cost basis by origination, before current fiscal year	0	800
Term loans amortized cost basis by origination, two years before current fiscal year	744	1,900
Term loans amortized cost basis by origination, three years before current fiscal year	0	31,458
Term loans amortized cost basis by origination, four years before current fiscal year	29,618	0
Term loans amortized cost basis by origination, prior	1,118	1,179
Total	31,480	35,337
Special Mention | Commercial Real Estate | Land and development | Revolving Loans Amortized Cost Basis
Financing Receivable, Credit Quality Indicator [Line Items]
Total	0	0
Special Mention | Commercial Real Estate | Land and development | Revolving Loans Converted to Term Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total	0	0
Substandard | Commercial And Industrial | Commercial, financial, and agricultural
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	13,751	16,105
Term loans amortized cost basis by origination, before current fiscal year	17,780	50,979
Term loans amortized cost basis by origination, two years before current fiscal year	38,943	40,125
Term loans amortized cost basis by origination, three years before current fiscal year	42,773	10,383
Term loans amortized cost basis by origination, four years before current fiscal year	18,405	16,473
Term loans amortized cost basis by origination, prior	21,418	37,565
Total	285,495	223,105
Substandard | Commercial And Industrial | Commercial, financial, and agricultural | Revolving Loans Amortized Cost Basis
Financing Receivable, Credit Quality Indicator [Line Items]
Total	131,422	51,442
Substandard | Commercial And Industrial | Commercial, financial, and agricultural | Revolving Loans Converted to Term Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total	1,003	33
Substandard | Commercial And Industrial | Owner-occupied
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	19,437	7,312
Term loans amortized cost basis by origination, before current fiscal year	13,381	1,294
Term loans amortized cost basis by origination, two years before current fiscal year	63,925	8,386
Term loans amortized cost basis by origination, three years before current fiscal year	7,415	43,276
Term loans amortized cost basis by origination, four years before current fiscal year	51,364	6,169
Term loans amortized cost basis by origination, prior	17,755	25,329
Total	173,277	91,766
Substandard | Commercial And Industrial | Owner-occupied | Revolving Loans Amortized Cost Basis
Financing Receivable, Credit Quality Indicator [Line Items]
Total	0	0
Substandard | Commercial And Industrial | Owner-occupied | Revolving Loans Converted to Term Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total	0	0
Substandard | Commercial Real Estate | Investment properties
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	5,973	1,465
Term loans amortized cost basis by origination, before current fiscal year	1,455	326
Term loans amortized cost basis by origination, two years before current fiscal year	176	8,550
Term loans amortized cost basis by origination, three years before current fiscal year	1,688	57,127
Term loans amortized cost basis by origination, four years before current fiscal year	51,767	3,564
Term loans amortized cost basis by origination, prior	3,931	23,505
Total	85,984	115,891
Substandard | Commercial Real Estate | Investment properties | Revolving Loans Amortized Cost Basis
Financing Receivable, Credit Quality Indicator [Line Items]
Total	20,994	21,354
Substandard | Commercial Real Estate | Investment properties | Revolving Loans Converted to Term Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total	0	0
Substandard | Commercial Real Estate | 1-4 family properties
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	1,309	1,999
Term loans amortized cost basis by origination, before current fiscal year	1,429	0
Term loans amortized cost basis by origination, two years before current fiscal year	75	566
Term loans amortized cost basis by origination, three years before current fiscal year	741	4,222
Term loans amortized cost basis by origination, four years before current fiscal year	836	489
Term loans amortized cost basis by origination, prior	1,243	2,177
Total	5,678	9,498
Substandard | Commercial Real Estate | 1-4 family properties | Revolving Loans Amortized Cost Basis
Financing Receivable, Credit Quality Indicator [Line Items]
Total	45	45
Substandard | Commercial Real Estate | 1-4 family properties | Revolving Loans Converted to Term Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total	0	0
Substandard | Commercial Real Estate | Land and development
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	699	824
Term loans amortized cost basis by origination, before current fiscal year	325	1,149
Term loans amortized cost basis by origination, two years before current fiscal year	220	46
Term loans amortized cost basis by origination, three years before current fiscal year	627	3,021
Term loans amortized cost basis by origination, four years before current fiscal year	472	807
Term loans amortized cost basis by origination, prior	1,654	3,055
Total	3,997	8,902
Substandard | Commercial Real Estate | Land and development | Revolving Loans Amortized Cost Basis
Financing Receivable, Credit Quality Indicator [Line Items]
Total	0	0
Substandard | Commercial Real Estate | Land and development | Revolving Loans Converted to Term Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total	0	0
Substandard | Consumer | Consumer mortgages
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	1,153	1,031
Term loans amortized cost basis by origination, before current fiscal year	6,452	3,680
Term loans amortized cost basis by origination, two years before current fiscal year	8,519	5,943
Term loans amortized cost basis by origination, three years before current fiscal year	9,442	12,387
Term loans amortized cost basis by origination, four years before current fiscal year	6,167	5,717
Term loans amortized cost basis by origination, prior	19,662	25,025
Total	51,395	53,783
Substandard | Consumer | Consumer mortgages | Revolving Loans Amortized Cost Basis
Financing Receivable, Credit Quality Indicator [Line Items]
Total	0	0
Substandard | Consumer | Consumer mortgages | Revolving Loans Converted to Term Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total	0	0
Substandard | Consumer | Home equity
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	0	0
Term loans amortized cost basis by origination, before current fiscal year	0	0
Term loans amortized cost basis by origination, two years before current fiscal year	0	0
Term loans amortized cost basis by origination, three years before current fiscal year	0	0
Term loans amortized cost basis by origination, four years before current fiscal year	0	0
Term loans amortized cost basis by origination, prior	0	0
Total	11,046	14,430
Substandard | Consumer | Home equity | Revolving Loans Amortized Cost Basis
Financing Receivable, Credit Quality Indicator [Line Items]
Total	6,534	9,058
Substandard | Consumer | Home equity | Revolving Loans Converted to Term Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total	4,512	5,372
Substandard | Consumer | Credit cards
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	0	0
Term loans amortized cost basis by origination, before current fiscal year	0	0
Term loans amortized cost basis by origination, two years before current fiscal year	0	0
Term loans amortized cost basis by origination, three years before current fiscal year	0	0
Term loans amortized cost basis by origination, four years before current fiscal year	0	0
Term loans amortized cost basis by origination, prior	0	0
Total	617	348
Substandard | Consumer | Credit cards | Revolving Loans Amortized Cost Basis
Financing Receivable, Credit Quality Indicator [Line Items]
Total	617	348
Substandard | Consumer | Credit cards | Revolving Loans Converted to Term Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total	0	0
Substandard | Consumer | Other consumer loans
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	1,417	668
Term loans amortized cost basis by origination, before current fiscal year	3,810	1,550
Term loans amortized cost basis by origination, two years before current fiscal year	1,648	2,064
Term loans amortized cost basis by origination, three years before current fiscal year	712	1,308
Term loans amortized cost basis by origination, four years before current fiscal year	163	1,892
Term loans amortized cost basis by origination, prior	888	750
Total	8,777	8,394
Substandard | Consumer | Other consumer loans | Revolving Loans Amortized Cost Basis
Financing Receivable, Credit Quality Indicator [Line Items]
Total	139	162
Substandard | Consumer | Other consumer loans | Revolving Loans Converted to Term Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total	0	0
Doubtful | Commercial And Industrial | Commercial, financial, and agricultural
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year		469
Term loans amortized cost basis by origination, before current fiscal year		0
Term loans amortized cost basis by origination, two years before current fiscal year		1,601
Term loans amortized cost basis by origination, three years before current fiscal year		8,512
Term loans amortized cost basis by origination, four years before current fiscal year		0
Term loans amortized cost basis by origination, prior		0
Total		10,630
Doubtful | Commercial And Industrial | Commercial, financial, and agricultural | Revolving Loans Amortized Cost Basis
Financing Receivable, Credit Quality Indicator [Line Items]
Total		48
Doubtful | Commercial And Industrial | Commercial, financial, and agricultural | Revolving Loans Converted to Term Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total		0
Loss | Commercial And Industrial | Commercial, financial, and agricultural
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	0	0
Term loans amortized cost basis by origination, before current fiscal year	0	0
Term loans amortized cost basis by origination, two years before current fiscal year	0	0
Term loans amortized cost basis by origination, three years before current fiscal year	0	0
Term loans amortized cost basis by origination, four years before current fiscal year	0	0
Term loans amortized cost basis by origination, prior	0	0
Total	277	85
Loss | Commercial And Industrial | Commercial, financial, and agricultural | Revolving Loans Amortized Cost Basis
Financing Receivable, Credit Quality Indicator [Line Items]
Total	277	85
Loss | Commercial And Industrial | Commercial, financial, and agricultural | Revolving Loans Converted to Term Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total	0	0
Loss | Commercial And Industrial | Owner-occupied
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	0	271
Term loans amortized cost basis by origination, before current fiscal year	245	0
Term loans amortized cost basis by origination, two years before current fiscal year	0	0
Term loans amortized cost basis by origination, three years before current fiscal year	0	0
Term loans amortized cost basis by origination, four years before current fiscal year	0	0
Term loans amortized cost basis by origination, prior	0	0
Total	245	271
Loss | Commercial And Industrial | Owner-occupied | Revolving Loans Amortized Cost Basis
Financing Receivable, Credit Quality Indicator [Line Items]
Total	0	0
Loss | Commercial And Industrial | Owner-occupied | Revolving Loans Converted to Term Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total	0	0
Loss | Consumer | Consumer mortgages
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	0	0
Term loans amortized cost basis by origination, before current fiscal year	0	0
Term loans amortized cost basis by origination, two years before current fiscal year	0	5
Term loans amortized cost basis by origination, three years before current fiscal year	4	0
Term loans amortized cost basis by origination, four years before current fiscal year	0	0
Term loans amortized cost basis by origination, prior	734	216
Total	738	221
Loss | Consumer | Consumer mortgages | Revolving Loans Amortized Cost Basis
Financing Receivable, Credit Quality Indicator [Line Items]
Total	0	0
Loss | Consumer | Consumer mortgages | Revolving Loans Converted to Term Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total	0	0
Loss | Consumer | Home equity
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	0	0
Term loans amortized cost basis by origination, before current fiscal year	0	0
Term loans amortized cost basis by origination, two years before current fiscal year	0	0
Term loans amortized cost basis by origination, three years before current fiscal year	0	0
Term loans amortized cost basis by origination, four years before current fiscal year	0	0
Term loans amortized cost basis by origination, prior	0	0
Total	519	798
Loss | Consumer | Home equity | Revolving Loans Amortized Cost Basis
Financing Receivable, Credit Quality Indicator [Line Items]
Total	402	658
Loss | Consumer | Home equity | Revolving Loans Converted to Term Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total	117	140
Loss | Consumer | Credit cards
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	0	0
Term loans amortized cost basis by origination, before current fiscal year	0	0
Term loans amortized cost basis by origination, two years before current fiscal year	0	0
Term loans amortized cost basis by origination, three years before current fiscal year	0	0
Term loans amortized cost basis by origination, four years before current fiscal year	0	0
Term loans amortized cost basis by origination, prior	0	0
Total	1,097	663
Loss | Consumer | Credit cards | Revolving Loans Amortized Cost Basis
Financing Receivable, Credit Quality Indicator [Line Items]
Total	1,097	663
Loss | Consumer | Credit cards | Revolving Loans Converted to Term Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total	0	0
Loss | Consumer | Other consumer loans
Financing Receivable, Credit Quality Indicator [Line Items]
Term loans amortized cost basis by origination, current fiscal year	0	0
Term loans amortized cost basis by origination, before current fiscal year	0	0
Term loans amortized cost basis by origination, two years before current fiscal year	0	0
Term loans amortized cost basis by origination, three years before current fiscal year	0	0
Term loans amortized cost basis by origination, four years before current fiscal year	0	0
Term loans amortized cost basis by origination, prior	8	20
Total	8	20
Loss | Consumer | Other consumer loans | Revolving Loans Amortized Cost Basis
Financing Receivable, Credit Quality Indicator [Line Items]
Total	0	0
Loss | Consumer | Other consumer loans | Revolving Loans Converted to Term Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total	$ 0	$ 0

Loans And Allowance For Loan _6

Loans And Allowance For Loan Losses - Schedule Of Allowances For Loan Losses And Recorded Investment In Loans (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	$ 427,597	$ 605,736	$ 281,402
Charge-offs	(83,710)	(105,232)	(119,262)
Recoveries	30,554	27,444	24,550
Provision for (reversal of) loan losses	68,983	(100,351)	336,052
Ending balance	443,424	427,597	605,736
Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance		82,994
Ending balance			82,994
Cumulative Effect, Period of Adoption, Adjusted Balance
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance		364,396
Ending balance			364,396
Commercial And Industrial
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	188,364	229,555	145,782
Charge-offs	(42,588)	(59,457)	(76,260)
Recoveries	14,625	9,734	13,544
Provision for (reversal of) loan losses	1,149	8,532	148,799
Ending balance	161,550	188,364	229,555
Commercial And Industrial | Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance		(2,310)
Ending balance			(2,310)
Commercial And Industrial | Cumulative Effect, Period of Adoption, Adjusted Balance
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance		143,472
Ending balance			143,472
Commercial Real Estate
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	97,760	130,742	67,430
Charge-offs	(3,102)	(15,392)	(13,213)
Recoveries	1,633	7,444	2,857
Provision for (reversal of) loan losses	47,284	(25,034)	74,319
Ending balance	143,575	97,760	130,742
Commercial Real Estate | Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance		(651)
Ending balance			(651)
Commercial Real Estate | Cumulative Effect, Period of Adoption, Adjusted Balance
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance		66,779
Ending balance			66,779
Consumer
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	141,473	245,439	68,190
Charge-offs	(38,020)	(30,383)	(29,789)
Recoveries	14,296	10,266	8,149
Provision for (reversal of) loan losses	20,550	(83,849)	112,934
Ending balance	$ 138,299	141,473	245,439
Consumer | Cumulative Effect, Period of Adoption, Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance		85,955
Ending balance			85,955
Consumer | Cumulative Effect, Period of Adoption, Adjusted Balance
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance		$ 154,145
Ending balance			$ 154,145

Loans And Allowance For Loan _7

Loans And Allowance For Loan Losses - Troubled Debt Restructurings (Details)	12 Months Ended
	Dec. 31, 2022 USD ($) contract	Dec. 31, 2021 USD ($) contract	Dec. 31, 2020 USD ($) contract
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	206	382	352
Total loans	$ 131,186,000	$ 48,932,000	$ 76,615,000
Write-down	$ 0	$ 0	$ 0
Commercial And Industrial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	115	176	174
Total loans	$ 105,610,000	$ 27,618,000	$ 28,917,000
Commercial And Industrial | Commercial, financial, and agricultural
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	86	152	152
Total loans	$ 35,797,000	$ 20,842,000	$ 22,851,000
Commercial And Industrial | Owner-occupied
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	29	24	22
Total loans	$ 69,813,000	$ 6,776,000	$ 6,066,000
Commercial Real Estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	25	30	35
Total loans	$ 18,654,000	$ 6,392,000	$ 34,579,000
Commercial Real Estate | Investment properties
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	7	9	9
Total loans	$ 11,636,000	$ 3,130,000	$ 31,099,000
Commercial Real Estate | 1-4 family properties
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	14	13	22
Total loans	$ 3,850,000	$ 1,254,000	$ 2,874,000
Commercial Real Estate | Land and development
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	4	8	4
Total loans	$ 3,168,000	$ 2,008,000	$ 606,000
Consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	66	176	143
Total loans	$ 6,922,000	$ 14,922,000	$ 13,119,000
Consumer | Consumer mortgages
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	10	18	23
Total loans	$ 1,442,000	$ 3,518,000	$ 4,655,000
Consumer | Home equity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	41	55	63
Total loans	$ 4,875,000	$ 5,249,000	$ 4,500,000
Consumer | Other consumer loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	15	103	57
Total loans	$ 605,000	$ 6,155,000	$ 3,964,000
Below Market Interest Rate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	118,530,000	32,801,000	52,550,000
Below Market Interest Rate | Commercial And Industrial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	100,474,000	18,654,000	15,475,000
Below Market Interest Rate | Commercial And Industrial | Commercial, financial, and agricultural
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	34,518,000	12,746,000	10,939,000
Below Market Interest Rate | Commercial And Industrial | Owner-occupied
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	65,956,000	5,908,000	4,536,000
Below Market Interest Rate | Commercial Real Estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	12,044,000	6,209,000	32,054,000
Below Market Interest Rate | Commercial Real Estate | Investment properties
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	5,026,000	3,130,000	29,679,000
Below Market Interest Rate | Commercial Real Estate | 1-4 family properties
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	3,850,000	1,131,000	1,769,000
Below Market Interest Rate | Commercial Real Estate | Land and development
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	3,168,000	1,948,000	606,000
Below Market Interest Rate | Consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	6,012,000	7,938,000	5,021,000
Below Market Interest Rate | Consumer | Consumer mortgages
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	1,176,000	2,512,000	1,866,000
Below Market Interest Rate | Consumer | Home equity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	4,836,000	4,991,000	1,970,000
Below Market Interest Rate | Consumer | Other consumer loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	0	435,000	1,185,000
Other Concessions
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	12,656,000	16,131,000	24,065,000
Other Concessions | Commercial And Industrial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	5,136,000	8,964,000	13,442,000
Other Concessions | Commercial And Industrial | Commercial, financial, and agricultural
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	1,279,000	8,096,000	11,912,000
Other Concessions | Commercial And Industrial | Owner-occupied
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	3,857,000	868,000	1,530,000
Other Concessions | Commercial Real Estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	6,610,000	183,000	2,525,000
Other Concessions | Commercial Real Estate | Investment properties
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	6,610,000	0	1,420,000
Other Concessions | Commercial Real Estate | 1-4 family properties
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	0	123,000	1,105,000
Other Concessions | Commercial Real Estate | Land and development
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	0	60,000	0
Other Concessions | Consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	910,000	6,984,000	8,098,000
Other Concessions | Consumer | Consumer mortgages
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	266,000	1,006,000	2,789,000
Other Concessions | Consumer | Home equity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	39,000	258,000	2,530,000
Other Concessions | Consumer | Other consumer loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	605,000	5,720,000	2,779,000
Principal Forgiveness
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	$ 0	$ 0	$ 0

Premises Equipment and Softwa_3

Premises Equipment and Software - Schedule of Premises Equipment and Software (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Property, Plant and Equipment [Line Items]
Total premises, equipment and software	$ 925,701	$ 981,468
Less: Accumulated depreciation and amortization	(555,069)	(574,227)
Net premises, equipment and software	370,632	407,241
Land
Property, Plant and Equipment [Line Items]
Total premises, equipment and software	92,125	104,768
Buildings and improvements
Property, Plant and Equipment [Line Items]
Total premises, equipment and software	303,934	361,593
Leasehold improvements
Property, Plant and Equipment [Line Items]
Total premises, equipment and software	89,619	55,098
Furniture, equipment and software
Property, Plant and Equipment [Line Items]
Total premises, equipment and software	422,495	441,091
Construction in progress
Property, Plant and Equipment [Line Items]
Total premises, equipment and software	$ 17,528	$ 18,918

Premises Equipment and Softwa_4

Premises Equipment and Software - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Premises, equipment and software, net	Premises, equipment and software, net
Finance lease, right-of-use asset	$ 1,400	$ 2,200
Depreciation and amortization expense	42,100	50,500	$ 51,600
Premises and equipment transferred to other assets held for sale	$ 24,163	33,379	$ 7,014
Real Estate Assets
Property, Plant and Equipment [Line Items]
Premises and equipment transferred to other assets held for sale		$ 17,600

Goodwill and Other Intangible_3

Goodwill and Other Intangible Assets - Schedule of Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Goodwill [Roll Forward]
Beginning balance	$ 452,390	$ 452,390
Change in goodwill from reallocation	0	0
Ending balance	452,390	452,390	$ 452,390
Goodwill impairment	0	0	44,877
Wholesale Banking Reporting Unit
Goodwill [Roll Forward]
Beginning balance	171,636	171,636
Change in goodwill from reallocation	0	0
Ending balance	171,636	171,636	171,636
Community Banking Reporting Unit
Goodwill [Roll Forward]
Beginning balance	256,323	256,323
Change in goodwill from reallocation	(114,701)	0
Ending balance	141,622	256,323	256,323
Consumer Banking Reporting Unit
Goodwill [Roll Forward]
Beginning balance	0	0
Change in goodwill from reallocation	114,701	0
Ending balance	114,701	0	0
Goodwill impairment			44,900
Wealth Management Reporting Unit
Goodwill [Roll Forward]
Beginning balance	24,431	24,431
Change in goodwill from reallocation	0	0
Ending balance	$ 24,431	$ 24,431	$ 24,431

Goodwill and Other Intangible_4

Goodwill and Other Intangible Assets - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Goodwill [Line Items]
Goodwill impairment	$ 0	$ 0	$ 44,877
Amortization of intangibles	$ 8,500	$ 9,500	10,600
Consumer Banking Reporting Unit
Goodwill [Line Items]
Goodwill impairment			$ 44,900
CDI
Goodwill [Line Items]
Finite-lived intangible asset, useful life	10 years
CDI | FCB Financial Holdings, Inc.
Goodwill [Line Items]
Finite-lived intangible asset, useful life	10 years

Goodwill and Other Intangible_5

Goodwill and Other Intangible Assets - Other Intangible Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 69,900	$ 69,900
Accumulated Amortization	(42,776)	(34,304)
Net Carrying Value	27,124	35,596
CDI
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	57,400	57,400
Accumulated Amortization	(35,484)	(28,178)
Net Carrying Value	21,916	29,222
Other
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	12,500	12,500
Accumulated Amortization	(7,292)	(6,126)
Net Carrying Value	$ 5,208	$ 6,374

Goodwill and Other Intangible_6

Goodwill and Other Intangible Assets - Amortization Expense (Details) $ in Thousands	Dec. 31, 2022 USD ($)
Aggregate estimated amortization expense
2023	$ 7,429
2024	6,366
2025	5,266
2026	4,195
2027	$ 2,824

Other Assets - Schedule of Othe

Other Assets - Schedule of Other Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Other Assets [Abstract]
Deferred tax asset, net	$ 595,317	$ 169,051
Investments in tax credits and CRA partnerships	496,527	426,137
ROU assets	421,481	411,472
Federal Reserve Bank and FHLB Stock	308,321	159,941
Accrued interest receivable	226,209	145,659
Accounts receivable	152,460	81,325
Derivative asset positions	89,815	191,708
Prepaid expense	48,152	42,874
Mutual funds and mutual funds held in rabbi trusts	42,659	43,657
MPS receivable	15,320	15,320
Other investments	11,172	12,185
Trading securities, at fair value	8,295	8,391
Other real estate	0	11,818
Miscellaneous other assets	55,910	70,660
Total other assets	$ 2,471,638	$ 1,790,198

Other Assets - Narrative (Detai

Other Assets - Narrative (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Other Assets [Abstract]
Federal reserve bank stock	$ 128.6	$ 143.7
Required percent of capital or surplus	6%
Required percent of deposits	0.60%
Federal home loan bank stock	$ 179.7	$ 16.2

Deposits (Details)

Deposits (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Interest-Bearing Deposit Liabilities [Abstract]
Interest-bearing demand deposits	$ 8,721,397	$ 9,321,611
Money market accounts	14,830,934	16,364,338
Savings accounts	1,416,246	1,420,647
Time deposits	2,964,078	3,093,027
Brokered deposits	5,299,005	2,835,000
Total interest-bearing deposits	33,231,660	33,034,623
Aggregate amount of time deposits of $250,000 or more	1,200,000	$ 1,330,000
Time Deposits, by Maturity [Abstract]
Maturing within one year	3,908,149
Between 1 - 2 years	1,748,784
2 - 3 years	567,936
3 - 4 years	32,037
4 - 5 years	26,282
Thereafter	11,837
Total	$ 6,295,025

Other Short-term Borrowings a_3

Other Short-term Borrowings and Long-term Debt - Schedule of Short-term Borrowings (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Short-Term Debt [Line Items]
Other short-term borrowings	$ 603,384	$ 200
FHLB advances with original maturities of one year or less
Short-Term Debt [Line Items]
Other short-term borrowings	600,014	0
Securities sold short
Short-Term Debt [Line Items]
Other short-term borrowings	$ 3,370	$ 200

Other Short-term Borrowings a_4

Other Short-term Borrowings and Long-term Debt - Additional Information on Synovus' Short-term Borrowings (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Debt Disclosure [Abstract]
Total balance at December 31,	$ 603,384	$ 200
Weighted average interest rate at December 31,	4.51%	0.08%
Maximum month-end balance during the year	$ 1,705,069	$ 200
Average amount outstanding during the year	$ 466,254	$ 8
Weighted average interest rate during the year	2.32%	0%

Other Short-term Borrowings a_5

Other Short-term Borrowings and Long-term Debt - Schedule of Long-term Debt Instruments (Details) - USD ($)		12 Months Ended
	Feb. 10, 2022	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Long-term debt		$ 4,109,597,000	$ 1,204,229,000
Repayments of long-term debt, net		700,000,000	0	$ 2,408,939,000
Synovus Bank
Debt Instrument [Line Items]
Long-term debt		3,465,107,000	596,895,000
2.289% Fixed-to-Floating Rate Senior Bank Notes due 2023 | Synovus Bank
Debt Instrument [Line Items]
Repayments of long-term debt, net	$ 405,300,000
4.00% Subordinated Notes, Due October 29, 2030 | Synovus Bank
Debt Instrument [Line Items]
Subordinated notes		$ 190,107,000	197,626,000
Stated percentage		4%
Debt, face amount		$ 200,000,000
Interest rate period		5 years
4.00% Subordinated Notes, Due October 29, 2030 | Synovus Bank | US Treasury Rate
Debt Instrument [Line Items]
Basis spread on variable rate		3.625%
Federal Home Loan Bank Advance | Synovus Bank
Debt Instrument [Line Items]
Other long-term debt		$ 3,275,000,000	0
Weighted average interest rate		4.56%
Senior Notes | 2.289% Fixed-to-Floating Rate Senior Bank Notes due 2023 | Synovus Bank
Debt Instrument [Line Items]
Long-term debt, gross		$ 0	399,269,000
Stated percentage		2.289%
Debt, face amount		$ 400,000,000
Interest rate period		2 years
Senior Notes | 2.289% Fixed-to-Floating Rate Senior Bank Notes due 2023 | Synovus Bank | Secured Overnight Financing Rate (SOFR)
Debt Instrument [Line Items]
Basis spread on variable rate		0.945%
Parent Company
Debt Instrument [Line Items]
Long-term debt		$ 644,490,000	607,334,000
Repayments of long-term debt, net		300,000,000	0	$ 250,000,000
Parent Company | 5.90% Subordinated Notes, due February 7, 2029
Debt Instrument [Line Items]
Subordinated notes		$ 298,158,000	297,855,000
Stated percentage		5.90%
Debt, face amount		$ 300,000,000
Interest rate period		5 years
Parent Company | 5.90% Subordinated Notes, due February 7, 2029 | Five-Year Mid Swap Rate
Debt Instrument [Line Items]
Basis spread on variable rate		3.379%
Parent Company | LIBOR 1.80% debentures, due June 15, 2035
Debt Instrument [Line Items]
Unsecured debt		$ 10,000,000	$ 10,000,000
Stated percentage		1.80%
Debt, face amount		$ 10,000,000
Interest rate at period end		6.57%	2%
Parent Company | Senior Notes | 3.125% Senior Notes due November 1, 2022
Debt Instrument [Line Items]
Long-term debt, gross		$ 0	$ 299,479,000
Stated percentage		3.125%
Debt, face amount		$ 300,000,000
Parent Company | Senior Notes | 5.200% Senior Notes due August 11, 2025
Debt Instrument [Line Items]
Long-term debt, gross		$ 336,332,000	$ 0
Stated percentage		5.20%
Debt, face amount		$ 350,000,000

Other Short-term Borrowings a_6

Other Short-term Borrowings and Long-term Debt - Principal Payments on Long-term Debt (Details) $ in Thousands	Dec. 31, 2022 USD ($)
Debt Instrument [Line Items]
2023	$ 500,000
2024	2,775,000
2025	350,000
2026	0
2027	0
Thereafter	510,000
Total	4,135,000
Synovus Bank
Debt Instrument [Line Items]
2023	500,000
2024	2,775,000
2025	0
2026	0
2027	0
Thereafter	200,000
Total	3,475,000
Parent Company
Debt Instrument [Line Items]
2023	0
2024	0
2025	350,000
2026	0
2027	0
Thereafter	310,000
Total	$ 660,000

Other Short-term Borrowings a_7

Other Short-term Borrowings and Long-term Debt (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Debt Disclosure [Abstract]
Other short-term borrowings	$ 603,384	$ 200

Other Short-term Borrowings a_8

Other Short-term Borrowings and Long-term Debt - Components of Short-term Borrowings (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Debt Disclosure [Abstract]
Short-term FHLB advances	$ 603,384	$ 200
Weighted average interest rate at December 31,	4.51%	0.08%
Maximum month-end balance during the year	$ 1,705,069	$ 200
Average amount outstanding during the year	$ 466,254	$ 8
Weighted average interest rate during the year	2.32%	0%

Shareholders' Equity and Othe_3

Shareholders' Equity and Other Comprehensive Income - Changes in Shares by Class (Details) - shares	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Preferred stock issued, beginning balance (in shares)	22,000,000
Common stock issued, beginning balance (in shares)	169,383,758
Treasury stock, beginning balance (in shares)	24,373,672
Common stock outstanding, beginning balance (in shares)	145,010,086
Stock options exercised (in shares)	365,000	923,000	572,000
Preferred stock issued, ending balance (in shares)	22,000,000	22,000,000
Common stock issued, ending balance (in shares)	170,141,492	169,383,758
Treasury stock, ending balance (in shares)	24,654,858	24,373,672
Common stock outstanding, ending balance (in shares)	145,486,634	145,010,086
Preferred Shares Issued
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Preferred stock issued, beginning balance (in shares)	22,000,000	22,000,000	22,000,000
Preferred stock issued, ending balance (in shares)	22,000,000	22,000,000	22,000,000
Preferred Shares Issued | Series D Preferred Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Preferred stock issued, beginning balance (in shares)	8,000,000	8,000,000	8,000,000
Preferred stock issued, ending balance (in shares)	8,000,000	8,000,000	8,000,000
Preferred Shares Issued | Series E Preferred Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Preferred stock issued, beginning balance (in shares)	14,000,000	14,000,000	14,000,000
Preferred stock issued, ending balance (in shares)	14,000,000	14,000,000	14,000,000
Common Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock issued, beginning balance (in shares)	169,384,000	168,133,000	166,801,000
Common stock outstanding, beginning balance (in shares)	145,010,000	148,040,000	147,158,000
Issuance of common stock for earnout payment (in shares)			379,000
Warrants exercised and common stock reissued (in shares)		3,000
Common stock reissued for earnout payment (in shares)		125,000
Restricted share unit activity (in shares)	399,000	355,000	389,000
Stock options exercised (in shares)	358,000	896,000	564,000
Repurchase of common stock (in shares)	281,000	4,400,000	450,000
Repurchase of stock (in shares)	(281,000)	(4,409,000)	(450,000)
Common stock issued, ending balance (in shares)	170,141,000	169,384,000	168,133,000
Common stock outstanding, ending balance (in shares)	145,486,000	145,010,000	148,040,000
Treasury Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Treasury stock, beginning balance (in shares)	24,374,000	20,093,000	19,643,000
Warrants exercised and common stock reissued (in shares)		(3,000)
Common stock reissued for earnout payment (in shares)		(125,000)
Repurchase of common stock (in shares)	281,000	4,409,000	450,000
Treasury stock, ending balance (in shares)	24,655,000	24,374,000	20,093,000

Shareholders' Equity and Othe_4

Shareholders' Equity and Other Comprehensive Income - Summary of Preferred Stock (Details) - USD ($) $ / shares in Units, $ in Millions			12 Months Ended
	Jul. 01, 2019	Jun. 21, 2018	Dec. 31, 2022
Fixed-to-Floating Rate Non-Cumulative Perpetual Preferred Stock, Series D
Class of Stock [Line Items]
Proceeds from issuance of stock		$ 200
Net Proceeds		$ 195.1
Liquidation preference (in dollars per share)		$ 25
Fixed-Rate Reset Non-Cumulative Perpetual Preferred Stock, Series E
Class of Stock [Line Items]
Proceeds from issuance of stock	$ 350
Net Proceeds	$ 342
Liquidation preference (in dollars per share)	$ 25
Up to and Excluding June 21, 2023 | Fixed-to-Floating Rate Non-Cumulative Perpetual Preferred Stock, Series D
Class of Stock [Line Items]
Dividend rate, percentage		6.30%
From and Including June 21, 2023 | Fixed-to-Floating Rate Non-Cumulative Perpetual Preferred Stock, Series D
Class of Stock [Line Items]
Dividend rate, percentage		3.352%
Until July 1, 2024 (Excluding July 1, 2024) | Fixed-Rate Reset Non-Cumulative Perpetual Preferred Stock, Series E
Class of Stock [Line Items]
Dividend rate, percentage	5.875%		5.875%
From July 1, 2024 (Including July 1, 2024) | Fixed-Rate Reset Non-Cumulative Perpetual Preferred Stock, Series E
Class of Stock [Line Items]
Dividend rate, percentage			4.127%

Shareholders' Equity and Othe_5

Shareholders' Equity and Other Comprehensive Income - Narrative (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Class of Stock [Line Items]
Repurchases of common stock	$ 12,987	$ 199,932	$ 16,246
Preferred Stock
Class of Stock [Line Items]
Redemption period from regulatory capital treatment	90 days
Redemption price per share (in dollars per share)	$ 25
Common Stock
Class of Stock [Line Items]
Repurchases of common stock	$ 13,000	$ 199,900	$ 16,200
Repurchase of common stock (in shares)	281	4,400	450

Shareholders' Equity and Othe_6

Shareholders' Equity and Other Comprehensive Income - OCI (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Changes in Accumulated Other Comprehensive Income (Loss) by Component [Roll Forward]
Beginning balance	$ 5,296,800	$ 5,161,334	$ 4,941,690
Other comprehensive income (loss) before reclassifications	(1,377,998)	(231,951)	153,993
Amounts reclassified from accumulated other comprehensive income (loss)	18,202	(9,005)	(60,999)
Other comprehensive income (loss)	(1,359,796)	(240,956)	92,994
Ending balance	4,475,801	5,296,800	5,161,334
Accumulated other comprehensive income (loss), net	(1,442,117)	(82,321)
Net Unrealized Gains (Losses) on Investment Securities Available for Sale
Changes in Accumulated Other Comprehensive Income (Loss) by Component [Roll Forward]
Beginning balance	(67,980)	105,669	83,666
Other comprehensive income (loss) before reclassifications	(1,152,283)	(174,246)	80,491
Amounts reclassified from accumulated other comprehensive income (loss)	0	597	(58,488)
Other comprehensive income (loss)	(1,152,283)	(173,649)	22,003
Ending balance	(1,220,263)	(67,980)	105,669
Accumulated other comprehensive income (loss), net	13,300
Net Unrealized Gains (Losses) on Cash Flow Hedges
Changes in Accumulated Other Comprehensive Income (Loss) by Component [Roll Forward]
Beginning balance	(14,341)	52,966	(18,487)
Other comprehensive income (loss) before reclassifications	(225,715)	(57,705)	73,502
Amounts reclassified from accumulated other comprehensive income (loss)	18,202	(9,602)	(2,049)
Other comprehensive income (loss)	(207,513)	(67,307)	71,453
Ending balance	(221,854)	(14,341)	52,966
Accumulated other comprehensive income (loss), net	12,100
Post-Retirement Unfunded Health Benefit
Changes in Accumulated Other Comprehensive Income (Loss) by Component [Roll Forward]
Beginning balance	0	0	462
Other comprehensive income (loss) before reclassifications	0	0	0
Amounts reclassified from accumulated other comprehensive income (loss)	0	0	(462)
Other comprehensive income (loss)	0	0	(462)
Ending balance	0	0	0
AOCI
Changes in Accumulated Other Comprehensive Income (Loss) by Component [Roll Forward]
Beginning balance	(82,321)	158,635	65,641
Other comprehensive income (loss)	(1,359,796)	(240,956)	92,994
Ending balance	$ (1,442,117)	$ (82,321)	$ 158,635

Regulatory Capital (Details)

Regulatory Capital (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Capital conservation buffer	2.50%
CET1 capital
CET1 capital, actual	$ 4,926,194	$ 4,388,618
CET1 capital, For capital adequacy purposes	2,302,824	2,079,435
Tier 1 risk-based capital
Tier I risk-based capital, actual	5,463,339	4,925,763
Tier I risk-based capital, for capital adequacy purposes	3,070,432	2,772,581
Total risk-based capital
Total risk-based capital, actual	6,415,681	5,827,196
Total risk-based capital, for capital adequacy purposes	$ 4,093,909	$ 3,696,774
CET1 capital ratio
CET1 capital ratio, actual	9.63%	9.50%
CET1 capital ratio, for capital adequacy purposes	4.50%	4.50%
Tier 1 risk-based capital ratio
Tier I risk-based capital ratio, actual	0.1068	0.1066
Tier I risk-based capital ratio, for capital adequacy purposes	0.0600	0.0600
Total risk-based capital ratio
Total risk-based capital ratio, actual	0.1254	0.1261
Total risk-based capital ratio, for capital adequacy purposes	0.0800	0.0800
Leverage ratio
Leverage ratio, actual	0.0907	0.0872
Leverage ratio, for capital adequacy purposes	0.0400	0.0400
Synovus Bank
CET1 capital
CET1 capital, actual	$ 5,446,703	$ 4,998,698
CET1 capital, For capital adequacy purposes	2,300,126	2,076,515
CET1 capital, to be well capitalized under prompt corrective action provisions	3,322,404	2,999,410
Tier 1 risk-based capital
Tier I risk-based capital, actual	5,446,703	4,998,698
Tier I risk-based capital, for capital adequacy purposes	3,066,835	2,768,686
Tier I risk-based capital, to be well capitalized under prompt corrective action provisions	4,089,113	3,691,581
Total risk-based capital
Total risk-based capital, actual	6,079,152	5,587,757
Total risk-based capital, for capital adequacy purposes	4,089,113	3,691,581
Total risk-based capital, to be well capitalized under prompt corrective action provisions	$ 5,111,391	$ 4,614,477
CET1 capital ratio
CET1 capital ratio, actual	10.66%	10.83%
CET1 capital ratio, for capital adequacy purposes	4.50%	4.50%
CET1 capital ratio, to be well capitalized under prompt corrective action provisions	6.50%	6.50%
Tier 1 risk-based capital ratio
Tier I risk-based capital ratio, actual	0.1066	0.1083
Tier I risk-based capital ratio, for capital adequacy purposes	0.0600	0.0600
Tier I risk-based capital ratio, to be well capitalized under prompt corrective action provisions	0.0800	0.0800
Total risk-based capital ratio
Total risk-based capital ratio, actual	0.1189	0.1211
Total risk-based capital ratio, for capital adequacy purposes	0.0800	0.0800
Total risk-based capital ratio, to be well capitalized under prompt corrective action provisions	0.1000	0.1000
Leverage ratio
Leverage ratio, actual	0.0906	0.0886
Leverage ratio, for capital adequacy purposes	0.0400	0.0400
Leverage ratio, to be well capitalized under prompt corrective action provisions	0.0500	0.0500

Net Income Per Common Share - S

Net Income Per Common Share - Schedule of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Earnings Per Share [Abstract]
Net income	$ 757,902	$ 760,467	$ 373,695
Less: Preferred stock dividends	33,163	33,163	33,163
Net income available to common shareholders	$ 724,739	$ 727,304	$ 340,532
Weighted average common shares outstanding, basic (in shares)	145,364	147,041	147,415
Effect of dilutive outstanding equity-based awards, warrants, and earnout payments (in shares)	1,117	1,454	795
Weighted average common shares outstanding, diluted (in shares)	146,481	148,495	148,210
Net income per common share, basic (in dollars per share)	$ 4.99	$ 4.95	$ 2.31
Net income per common share, diluted (in dollars per share)	$ 4.95	$ 4.90	$ 2.30

Net Income Per Common Share - N

Net Income Per Common Share - Narrative (Details) - shares shares in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Earnings Per Share [Abstract]
Antidilutive securities excluded from computation of earnings per share, amount (in shares)	21	21	602

Fair Value Accounting - Financi

Fair Value Accounting - Financial Instruments Measured At Fair Value On A Recurring Basis (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Assets
Total investment securities available for sale	$ 9,678,103	$ 10,918,329
Mutual funds and mutual funds held in rabbi trusts	42,659	43,657
Derivative assets	89,815	191,708
U.S. Treasury securities
Assets
Total investment securities available for sale	471,813	117,838
Mortgage-backed securities issued by U.S. Government agencies
Assets
Total investment securities available for sale	792,749	779,633
Mortgage-backed securities issued by U.S. Government sponsored enterprises
Assets
Total investment securities available for sale	6,895,070	8,012,301
Collateralized mortgage obligations issued by U.S. Government agencies or sponsored enterprises
Assets
Total investment securities available for sale	655,127	939,623
Commercial mortgage-backed securities issued by U.S. Government agencies or sponsored enterprises
Assets
Total investment securities available for sale	805,945	481,744
Asset-backed securities
Assets
Total investment securities available for sale		514,188
Corporate debt securities and other debt securities
Assets
Total investment securities available for sale	8,601	18,801
Fair Value, Measurements, Recurring
Assets
Total trading securities	8,295	8,391
Total investment securities available for sale	9,678,103	10,918,329
Mortgage loans held for sale	51,136	108,198
Other investments	11,172	12,185
Mutual funds and mutual funds held in rabbi trusts	42,659	43,657
SBA loans servicing asset	2,354	3,233
Derivative assets	89,815	191,708
Liabilities
Securities sold short	3,370	200
Mutual fund held in rabbi trusts	27,944	27,205
Derivative liabilities	342,680	98,602
Fair Value, Measurements, Recurring | Level 1
Assets
Total trading securities	0	0
Total investment securities available for sale	471,813	117,838
Mortgage loans held for sale	0	0
Other investments	0	0
Mutual funds and mutual funds held in rabbi trusts	42,659	43,657
SBA loans servicing asset	0	0
Derivative assets	0	0
Liabilities
Securities sold short	3,370	0
Mutual fund held in rabbi trusts	27,944	27,205
Derivative liabilities	0	0
Fair Value, Measurements, Recurring | Level 2
Assets
Total trading securities	8,295	8,391
Total investment securities available for sale	9,206,290	10,800,491
Mortgage loans held for sale	51,136	108,198
Other investments	0	0
Mutual funds and mutual funds held in rabbi trusts	0	0
SBA loans servicing asset	0	0
Derivative assets	89,815	191,708
Liabilities
Securities sold short	0	200
Mutual fund held in rabbi trusts	0	0
Derivative liabilities	339,227	95,067
Fair Value, Measurements, Recurring | Level 3
Assets
Total trading securities	0	0
Total investment securities available for sale	0	0
Mortgage loans held for sale	0	0
Other investments	11,172	12,185
Mutual funds and mutual funds held in rabbi trusts	0	0
SBA loans servicing asset	2,354	3,233
Derivative assets	0	0
Liabilities
Securities sold short	0	0
Mutual fund held in rabbi trusts	0	0
Derivative liabilities	3,453	3,535
Fair Value, Measurements, Recurring | U.S. Treasury securities
Assets
Total investment securities available for sale	471,813	117,838
Fair Value, Measurements, Recurring | U.S. Treasury securities | Level 1
Assets
Total investment securities available for sale	471,813	117,838
Fair Value, Measurements, Recurring | U.S. Treasury securities | Level 2
Assets
Total investment securities available for sale	0	0
Fair Value, Measurements, Recurring | U.S. Treasury securities | Level 3
Assets
Total investment securities available for sale	0	0
Fair Value, Measurements, Recurring | U.S. Government agency securities
Assets
Total investment securities available for sale	48,798	54,201
Fair Value, Measurements, Recurring | U.S. Government agency securities | Level 1
Assets
Total investment securities available for sale	0	0
Fair Value, Measurements, Recurring | U.S. Government agency securities | Level 2
Assets
Total investment securities available for sale	48,798	54,201
Fair Value, Measurements, Recurring | U.S. Government agency securities | Level 3
Assets
Total investment securities available for sale	0	0
Fair Value, Measurements, Recurring | Mortgage-backed securities issued by U.S. Government agencies
Assets
Total trading securities	0	197
Total investment securities available for sale	792,749	779,633
Fair Value, Measurements, Recurring | Mortgage-backed securities issued by U.S. Government agencies | Level 1
Assets
Total trading securities	0	0
Total investment securities available for sale	0	0
Fair Value, Measurements, Recurring | Mortgage-backed securities issued by U.S. Government agencies | Level 2
Assets
Total trading securities	0	197
Total investment securities available for sale	792,749	779,633
Fair Value, Measurements, Recurring | Mortgage-backed securities issued by U.S. Government agencies | Level 3
Assets
Total trading securities	0	0
Total investment securities available for sale	0	0
Fair Value, Measurements, Recurring | Mortgage-backed securities issued by U.S. Government sponsored enterprises
Assets
Total investment securities available for sale	6,895,070	8,012,301
Fair Value, Measurements, Recurring | Mortgage-backed securities issued by U.S. Government sponsored enterprises | Level 1
Assets
Total investment securities available for sale	0	0
Fair Value, Measurements, Recurring | Mortgage-backed securities issued by U.S. Government sponsored enterprises | Level 2
Assets
Total investment securities available for sale	6,895,070	8,012,301
Fair Value, Measurements, Recurring | Mortgage-backed securities issued by U.S. Government sponsored enterprises | Level 3
Assets
Total investment securities available for sale	0	0
Fair Value, Measurements, Recurring | Collateralized mortgage obligations issued by U.S. Government agencies or sponsored enterprises
Assets
Total trading securities	2,991	671
Total investment securities available for sale	655,127	939,623
Fair Value, Measurements, Recurring | Collateralized mortgage obligations issued by U.S. Government agencies or sponsored enterprises | Level 1
Assets
Total trading securities	0	0
Total investment securities available for sale	0	0
Fair Value, Measurements, Recurring | Collateralized mortgage obligations issued by U.S. Government agencies or sponsored enterprises | Level 2
Assets
Total trading securities	2,991	671
Total investment securities available for sale	655,127	939,623
Fair Value, Measurements, Recurring | Collateralized mortgage obligations issued by U.S. Government agencies or sponsored enterprises | Level 3
Assets
Total trading securities	0	0
Total investment securities available for sale	0	0
Fair Value, Measurements, Recurring | Other mortgage-backed securities
Assets
Total trading securities	3,185	0
Fair Value, Measurements, Recurring | Other mortgage-backed securities | Level 1
Assets
Total trading securities	0	0
Fair Value, Measurements, Recurring | Other mortgage-backed securities | Level 2
Assets
Total trading securities	3,185	0
Fair Value, Measurements, Recurring | Other mortgage-backed securities | Level 3
Assets
Total trading securities	0	0
Fair Value, Measurements, Recurring | State and municipal securities
Assets
Total trading securities	48	560
Fair Value, Measurements, Recurring | State and municipal securities | Level 1
Assets
Total trading securities	0	0
Fair Value, Measurements, Recurring | State and municipal securities | Level 2
Assets
Total trading securities	48	560
Fair Value, Measurements, Recurring | State and municipal securities | Level 3
Assets
Total trading securities	0	0
Fair Value, Measurements, Recurring | Commercial mortgage-backed securities issued by U.S. Government agencies or sponsored enterprises
Assets
Total investment securities available for sale	805,945	481,744
Fair Value, Measurements, Recurring | Commercial mortgage-backed securities issued by U.S. Government agencies or sponsored enterprises | Level 1
Assets
Total investment securities available for sale	0	0
Fair Value, Measurements, Recurring | Commercial mortgage-backed securities issued by U.S. Government agencies or sponsored enterprises | Level 2
Assets
Total investment securities available for sale	805,945	481,744
Fair Value, Measurements, Recurring | Commercial mortgage-backed securities issued by U.S. Government agencies or sponsored enterprises | Level 3
Assets
Total investment securities available for sale	0	0
Fair Value, Measurements, Recurring | Asset-backed securities
Assets
Total trading securities	2,071	6,963
Total investment securities available for sale	0	514,188
Fair Value, Measurements, Recurring | Asset-backed securities | Level 1
Assets
Total trading securities	0	0
Total investment securities available for sale	0	0
Fair Value, Measurements, Recurring | Asset-backed securities | Level 2
Assets
Total trading securities	2,071	6,963
Total investment securities available for sale	0	514,188
Fair Value, Measurements, Recurring | Asset-backed securities | Level 3
Assets
Total trading securities	0	0
Total investment securities available for sale	0	0
Fair Value, Measurements, Recurring | Corporate debt securities and other debt securities
Assets
Total investment securities available for sale	8,601	18,801
Fair Value, Measurements, Recurring | Corporate debt securities and other debt securities | Level 1
Assets
Total investment securities available for sale	0	0
Fair Value, Measurements, Recurring | Corporate debt securities and other debt securities | Level 2
Assets
Total investment securities available for sale	8,601	18,801
Fair Value, Measurements, Recurring | Corporate debt securities and other debt securities | Level 3
Assets
Total investment securities available for sale	$ 0	$ 0

Fair Value Accounting - Changes

Fair Value Accounting - Changes in Fair Value Included in Consolidated Statements of Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Fair Value Disclosures [Abstract]
Mortgage loans held for sale	$ (1,541)	$ (3,942)	$ 3,400
Fair value	51,136	108,198	216,647
Unpaid principal balance	50,264	105,785	210,292
Fair value less aggregate unpaid principal balance	$ 872	$ 2,413	$ 6,355

Fair Value Accounting - Chang_2

Fair Value Accounting - Changes In Level 3 Fair Value Measurements (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Other Liabilities
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	$ 0	$ (5,677)
Included in earnings		(507)
Sales		0
Additions		0
Settlements		6,184
Ending balance		0
Total net gains (losses) for the year included in earnings attributable to the change in unrealized gains (losses) relating to liabilities still held		0
Visa Derivative Liability
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	(3,535)	(2,048)
Included in earnings	(6,000)	(2,656)
Sales		0
Additions	0	0
Settlements	6,082	1,169
Ending balance	(3,453)	(3,535)
Total net gains (losses) for the year included in earnings attributable to the change in unrealized gains (losses) relating to liabilities still held	(6,000)	(2,656)
Other investments
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	12,185	1,021
Included in earnings	(7,201)	1,164
Sales		0
Additions	6,188	10,000
Settlements	0	0
Ending balance	11,172	12,185
Total net gains (losses) for the year included in earnings attributable to the change in unrealized gains (losses) relating to assets still held	(7,201)	1,164
SBA Loans Servicing Asset
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	3,233	3,258
Included in earnings	(2,012)	(1,339)
Sales		0
Additions	1,133	1,314
Settlements	0	0
Ending balance	2,354	3,233
Total net gains (losses) for the year included in earnings attributable to the change in unrealized gains (losses) relating to assets still held	(460)	0
Securities Investment
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	$ 0	2,021
Included in earnings		0
Sales		(2,021)
Additions		0
Settlements		0
Ending balance		0
Total net gains (losses) for the year included in earnings attributable to the change in unrealized gains (losses) relating to assets still held		$ 0

Fair Value Accounting - Fair Va

Fair Value Accounting - Fair Value Measurements and Valuation Techniques (Details) - Fair Value, Measurements, Recurring - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other investments	$ 11,172	$ 12,185
SBA loans servicing asset	2,354	3,233
Visa derivative liability	(342,680)	(98,602)
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other investments	11,172	12,185
SBA loans servicing asset	2,354	3,233
Visa derivative liability	$ (3,453)	$ (3,535)
Level 3 | Discounted cash flow analysis
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing assets and servicing liabilities at fair value, assumptions used to estimate fair value, discount rate	18.85%	8.55%
Servicing assets and servicing liabilities at fair value, assumptions used to estimate fair value, prepayment speeds	14.73%	18.50%
Level 3 | Discounted cash flow analysis | Visa Derivative Liability
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Covered litigation conversion ratio	1.5991	1.6181
Level 3 | Discounted cash flow analysis | Minimum | Visa Derivative Liability
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimated timing of resolution of covered litigation and future cumulative deposits to the litigation escrow for settlement of the Covered Litigation	0 years	0 years
Level 3 | Discounted cash flow analysis | Maximum | Visa Derivative Liability
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimated timing of resolution of covered litigation and future cumulative deposits to the litigation escrow for settlement of the Covered Litigation	1 year 7 months 6 days	1 year 9 months 18 days

Fair Value Accounting - Assets

Fair Value Accounting - Assets And Liabilities Measured At Fair Value On A Non-Recurring Basis (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other real estate	$ 0	$ 11,818
Fair Value, Measurements, Nonrecurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	19,410	19,482
Other real estate	0	270
Other assets held for sale	7,548	1,256
Fair Value, Measurements, Nonrecurring | Loans | Provision for credit losses
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value adjustment	7,098	27,613
Fair Value, Measurements, Nonrecurring | Other real estate | Other operating expense
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value adjustment	0	120
Fair Value, Measurements, Nonrecurring | Other assets held for sale | Other operating expense
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value adjustment	1,843	462
Fair Value, Measurements, Nonrecurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	0	0
Other real estate	0	0
Other assets held for sale	0	0
Fair Value, Measurements, Nonrecurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	0	0
Other real estate	0	0
Other assets held for sale	0	0
Fair Value, Measurements, Nonrecurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	19,410	19,482
Other real estate	0	270
Other assets held for sale	$ 7,548	$ 1,256

Fair Value Accounting - Valuati

Fair Value Accounting - Valuation Techniques and Significant Unobservable Inputs (Details) - Fair Value, Measurements, Nonrecurring	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Minimum | Collateral Dependent Impaired Loans | Level 3 | Third Party Appraised value of Real Estate Less Estimated Selling Costs
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing assets and servicing liabilities at fair value, assumptions used to estimate fair value, discount rate	0%	0%
Fair value inputs, estimated selling costs	0%	0%
Minimum | Other real estate | Level 3 | Third Party Appraised value of Real Estate Less Estimated Selling Costs
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing assets and servicing liabilities at fair value, assumptions used to estimate fair value, discount rate		0%
Fair value inputs, estimated selling costs		0%
Minimum | Other assets held for sale | Level 3 | Third-party appraised value less estimated selling costs or BOV
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing assets and servicing liabilities at fair value, assumptions used to estimate fair value, discount rate	0%	0%
Fair value inputs, estimated selling costs	0%	0%
Maximum | Collateral Dependent Impaired Loans | Level 3 | Third Party Appraised value of Real Estate Less Estimated Selling Costs
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing assets and servicing liabilities at fair value, assumptions used to estimate fair value, discount rate	74%	71%
Fair value inputs, estimated selling costs	10%	10%
Maximum | Other real estate | Level 3 | Third Party Appraised value of Real Estate Less Estimated Selling Costs
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing assets and servicing liabilities at fair value, assumptions used to estimate fair value, discount rate		48%
Fair value inputs, estimated selling costs		10%
Maximum | Other assets held for sale | Third-party appraised value less estimated selling costs or BOV
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing assets and servicing liabilities at fair value, assumptions used to estimate fair value, discount rate		51%
Maximum | Other assets held for sale | Level 3 | Third-party appraised value less estimated selling costs or BOV
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing assets and servicing liabilities at fair value, assumptions used to estimate fair value, discount rate	35%
Fair value inputs, estimated selling costs	10%	10%
Weighted Average | Collateral Dependent Impaired Loans | Level 3 | Third Party Appraised value of Real Estate Less Estimated Selling Costs
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing assets and servicing liabilities at fair value, assumptions used to estimate fair value, discount rate	21%	48%
Fair value inputs, estimated selling costs	7%	7%
Weighted Average | Other real estate | Level 3 | Third Party Appraised value of Real Estate Less Estimated Selling Costs
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing assets and servicing liabilities at fair value, assumptions used to estimate fair value, discount rate		24%
Fair value inputs, estimated selling costs		7%
Weighted Average | Other assets held for sale | Third-party appraised value less estimated selling costs or BOV
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing assets and servicing liabilities at fair value, assumptions used to estimate fair value, discount rate		20%
Weighted Average | Other assets held for sale | Level 3 | Third-party appraised value less estimated selling costs or BOV
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing assets and servicing liabilities at fair value, assumptions used to estimate fair value, discount rate	13%
Fair value inputs, estimated selling costs	7%	7%

Fair Value Accounting - Carryin

Fair Value Accounting - Carrying And Estimated Fair Values Of Financial Instruments Carried On Balance Sheet (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Financial assets
Total investment securities available for sale	$ 9,678,103	$ 10,918,329
Mutual funds and mutual funds held in rabbi trusts	42,659	43,657
Loans, net	43,272,929	38,884,361
Derivative assets	89,815	191,708
Financial liabilities
Non-interest-bearing deposits	15,639,899	16,392,653
Time deposits	6,295,025
Total deposits	48,871,559	49,427,276
Federal funds purchased and securities sold under repurchase agreements	146,588	264,133
Short-term FHLB advances	603,384	200
Long-term debt	4,109,597	1,204,229
Fair Value, Measurements, Recurring
Financial assets
Trading securities	8,295	8,391
Total investment securities available for sale	9,678,103	10,918,329
Other investments	11,172	12,185
Mutual funds and mutual funds held in rabbi trusts	42,659	43,657
SBA loans servicing asset	2,354	3,233
Derivative assets	89,815	191,708
Financial liabilities
Securities sold short	3,370	200
Mutual fund held in rabbi trusts	27,944	27,205
Derivative liabilities	342,680	98,602
Level 1 | Fair Value, Measurements, Recurring
Financial assets
Total cash, cash equivalents, and restricted cash	1,977,780	3,009,853
Trading securities	0	0
Total investment securities available for sale	471,813	117,838
Loans held for sale	0	0
Other investments	0	0
Mutual funds and mutual funds held in rabbi trusts	42,659	43,657
Loans, net	0	0
SBA loans servicing asset	0	0
FRB and FHLB stock	0	0
Derivative assets	0	0
Financial liabilities
Non-interest-bearing deposits	0	0
Non-time interest-bearing deposits	0	0
Time deposits	0	0
Total deposits	0	0
Federal funds purchased and securities sold under repurchase agreements	146,588	264,133
Securities sold short	3,370	0
Short-term FHLB advances	0
Long-term debt	0	0
Mutual fund held in rabbi trusts	27,944	27,205
Derivative liabilities	0	0
Level 2 | Fair Value, Measurements, Recurring
Financial assets
Total cash, cash equivalents, and restricted cash	0	0
Trading securities	8,295	8,391
Total investment securities available for sale	9,206,290	10,800,491
Loans held for sale	51,136	108,198
Other investments	0	0
Mutual funds and mutual funds held in rabbi trusts	0	0
Loans, net	0	0
SBA loans servicing asset	0	0
FRB and FHLB stock	308,321	159,941
Derivative assets	89,815	191,708
Financial liabilities
Non-interest-bearing deposits	15,639,899	16,392,653
Non-time interest-bearing deposits	26,936,635	28,917,148
Time deposits	6,260,315	4,125,673
Total deposits	48,836,849	49,435,474
Federal funds purchased and securities sold under repurchase agreements	0	0
Securities sold short	0	200
Short-term FHLB advances	600,014
Long-term debt	4,120,113	1,243,147
Mutual fund held in rabbi trusts	0	0
Derivative liabilities	339,227	95,067
Level 3 | Fair Value, Measurements, Recurring
Financial assets
Total cash, cash equivalents, and restricted cash	0	0
Trading securities	0	0
Total investment securities available for sale	0	0
Loans held for sale	339,949	641,782
Other investments	11,172	12,185
Mutual funds and mutual funds held in rabbi trusts	0	0
Loans, net	42,192,295	39,118,275
SBA loans servicing asset	2,354	3,233
FRB and FHLB stock	0	0
Derivative assets	0	0
Financial liabilities
Non-interest-bearing deposits	0	0
Non-time interest-bearing deposits	0	0
Time deposits	0	0
Total deposits	0	0
Federal funds purchased and securities sold under repurchase agreements	0	0
Securities sold short	0	0
Short-term FHLB advances	0
Long-term debt	0	0
Mutual fund held in rabbi trusts	0	0
Derivative liabilities	3,453	3,535
Carrying Value | Fair Value, Measurements, Recurring
Financial assets
Total cash, cash equivalents, and restricted cash	1,977,780	3,009,853
Trading securities	8,295	8,391
Total investment securities available for sale	9,678,103	10,918,329
Loans held for sale	391,502	750,642
Other investments	11,172	12,185
Mutual funds and mutual funds held in rabbi trusts	42,659	43,657
Loans, net	43,272,929	38,884,361
SBA loans servicing asset	2,354	3,233
FRB and FHLB stock	308,321	159,941
Derivative assets	89,815	191,708
Financial liabilities
Non-interest-bearing deposits	15,639,899	16,392,653
Non-time interest-bearing deposits	26,936,635	28,917,148
Time deposits	6,295,025	4,117,475
Total deposits	48,871,559	49,427,276
Federal funds purchased and securities sold under repurchase agreements	146,588	264,133
Securities sold short	3,370	200
Short-term FHLB advances	600,014
Long-term debt	4,109,597	1,204,229
Mutual fund held in rabbi trusts	27,944	27,205
Derivative liabilities	342,680	98,602
Fair Value | Fair Value, Measurements, Recurring
Financial assets
Total cash, cash equivalents, and restricted cash	1,977,780	3,009,853
Trading securities	8,295	8,391
Total investment securities available for sale	9,678,103	10,918,329
Loans held for sale	391,085	749,980
Other investments	11,172	12,185
Mutual funds and mutual funds held in rabbi trusts	42,659	43,657
Loans, net	42,192,295	39,118,275
SBA loans servicing asset	2,354	3,233
FRB and FHLB stock	308,321	159,941
Derivative assets	89,815	191,708
Financial liabilities
Non-interest-bearing deposits	15,639,899	16,392,653
Non-time interest-bearing deposits	26,936,635	28,917,148
Time deposits	6,260,315	4,125,673
Total deposits	48,836,849	49,435,474
Federal funds purchased and securities sold under repurchase agreements	146,588	264,133
Securities sold short	3,370	200
Short-term FHLB advances	600,014
Long-term debt	4,120,113	1,243,147
Mutual fund held in rabbi trusts	27,944	27,205
Derivative liabilities	$ 342,680	$ 98,602

Derivative Instruments - Narrat

Derivative Instruments - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Derivative [Line Items]
Net unrealized gains (losses) arising during the period	$ (298,289)	$ (77,948)	$ 99,193
Unrealized gain, after tax	(225,715)	(57,705)	$ 73,502
Pre-tax income	3,800	12,900
Unamortized deferred net loss balance from previously terminated cash flow hedges	165,000
Pre-tax loss included in interest income on cash flow hedges	24,000
Reclaim cash collateral	66,800	64,500
Obligation to return cash collateral	7,700	0
Cash Flow Hedging
Derivative [Line Items]
Net unrealized gains (losses) arising during the period	(57,400)	1,200
Unrealized gain, after tax	$ (43,400)	$ 930

Derivative Instruments - Impact

Derivative Instruments - Impact Of Derivatives On Balance Sheet (Details) - USD ($)	Dec. 31, 2022	Dec. 31, 2021
Designated as Hedging Instrument
Derivative [Line Items]
Fair value of derivative assets	$ 0	$ 22,004,000
Fair value of derivative liabilities	16,379,000	20,395,000
Not Designated As Hedging Instruments
Derivative [Line Items]
Fair value of derivative assets	89,815,000	169,704,000
Fair value of derivative liabilities	326,301,000	78,207,000
Not Designated As Hedging Instruments | Interest rate contracts
Derivative [Line Items]
Notional Amount	10,276,754,000	9,653,600,000
Fair value of derivative assets	89,310,000	167,560,000
Fair value of derivative liabilities	322,329,000	74,514,000
Not Designated As Hedging Instruments | Mortgage derivatives | Mortgage derivatives - interest rate lock commitments
Derivative [Line Items]
Notional Amount	50,218,000	99,006,000
Fair value of derivative assets	350,000	2,105,000
Fair value of derivative liabilities	0	0
Not Designated As Hedging Instruments | Mortgage derivatives | Mortgage derivatives - forward commitments to sell fixed-rate mortgage loans
Derivative [Line Items]
Notional Amount	76,500,000	105,500,000
Fair value of derivative assets	155,000	0
Fair value of derivative liabilities	0	122,000
Not Designated As Hedging Instruments | Risk participation agreements
Derivative [Line Items]
Notional Amount	635,891,000	374,214,000
Fair value of derivative assets	0	0
Fair value of derivative liabilities	3,000	36,000
Not Designated As Hedging Instruments | Foreign exchange contracts
Derivative [Line Items]
Notional Amount	20,439,000	22,387,000
Fair value of derivative assets	0	39,000
Fair value of derivative liabilities	516,000	0
Not Designated As Hedging Instruments | Visa Derivative Liability
Derivative [Line Items]
Notional Amount	0	0
Fair value of derivative assets	0	0
Fair value of derivative liabilities	3,453,000	3,535,000
Cash Flow Hedging
Derivative [Line Items]
Fair value of derivative assets	0	22,004,000
Fair value of derivative liabilities	8,286,000	20,395,000
Cash Flow Hedging | Interest rate contracts
Derivative [Line Items]
Notional Amount	5,250,000,000	3,600,000,000
Fair value of derivative assets	0	22,004,000
Fair value of derivative liabilities	8,286,000	20,395,000
Fair Value Hedging
Derivative [Line Items]
Fair value of derivative assets	0	0
Fair value of derivative liabilities	8,093,000	0
Fair Value Hedging | Interest rate contracts
Derivative [Line Items]
Notional Amount	2,230,232,000	0
Fair value of derivative assets	0	0
Fair value of derivative liabilities	$ 8,093,000	$ 0

Derivative Instruments - Effect

Derivative Instruments - Effect Of Fair Value Hedges On Consolidated Statements Of Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Derivative [Line Items]
Loans, including fees	$ 1,796,900	$ 1,532,947	$ 1,512,748
Deposits	(187,232)	(74,919)	(217,777)
Long-term debt	(79,402)	(45,349)	(66,053)
Interest Income, Loans, Including Fees
Derivative [Line Items]
Loans, including fees	1,806,060	1,482,567	1,600,462
Interest Income, Loans, Including Fees | Cash Flow Hedging
Derivative [Line Items]
Pre-tax income (loss) recognized on hedges	(24,057)
Interest Income, Loans, Including Fees | Fair Value Hedging
Derivative [Line Items]
Amounts related to interest settlements and amortization on derivatives	0
Recognized on derivatives	0
Recognized on hedged items	0
Pre-tax income (loss) recognized on hedges	0
Interest Income, Loans, Including Fees | Interest rate contracts | Cash Flow Hedging
Derivative [Line Items]
Realized gains (losses) reclassified from AOCI, pre-tax, to interest income on loans	(24,057)	12,862	2,765
Pre-tax income (loss) recognized on hedges		12,862	$ 2,765
Deposits
Derivative [Line Items]
Deposits	(187,232)
Deposits | Cash Flow Hedging
Derivative [Line Items]
Pre-tax income (loss) recognized on hedges	0
Deposits | Fair Value Hedging
Derivative [Line Items]
Amounts related to interest settlements and amortization on derivatives	1,516
Recognized on derivatives	(24,227)
Recognized on hedged items	24,227
Pre-tax income (loss) recognized on hedges	1,516
Deposits | Interest rate contracts | Cash Flow Hedging
Derivative [Line Items]
Realized gains (losses) reclassified from AOCI, pre-tax, to interest income on loans	0
Deposits | Interest rate contracts | Fair Value Hedging
Derivative [Line Items]
Recognized on hedged items	24,227	0
Long-Term Debt
Derivative [Line Items]
Long-term debt	(79,402)
Long-Term Debt | Cash Flow Hedging
Derivative [Line Items]
Pre-tax income (loss) recognized on hedges	0
Long-Term Debt | Fair Value Hedging
Derivative [Line Items]
Amounts related to interest settlements and amortization on derivatives	(322)
Recognized on derivatives	(19,348)
Recognized on hedged items	19,348
Pre-tax income (loss) recognized on hedges	(322)
Long-Term Debt | Interest rate contracts | Cash Flow Hedging
Derivative [Line Items]
Realized gains (losses) reclassified from AOCI, pre-tax, to interest income on loans	$ 0
Long-Term Debt | Interest rate contracts | Fair Value Hedging
Derivative [Line Items]
Recognized on hedged items		$ 0

Derivative Instruments - (Sched

Derivative Instruments - (Schedule of the Carrying Amount and Associated Cumulative Basis Adjustment Related to the Application of Hedge Accounting) (Details) - Fair Value Hedging - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Interest-bearing deposits
Derivative [Line Items]
Hedge Accounting Basis Adjustment	$ 24,227
Long-Term Debt
Derivative [Line Items]
Hedge Accounting Basis Adjustment	19,348
Interest rate contracts | Interest-bearing deposits
Derivative [Line Items]
Carrying amount of liabilities	(1,680,000)	$ 0
Hedge Accounting Basis Adjustment	24,227	0
Interest rate contracts | Long-Term Debt
Derivative [Line Items]
Carrying amount of liabilities	$ (545,787)	0
Hedge Accounting Basis Adjustment		$ 0

Derivative Instruments - (Effec

Derivative Instruments - (Effect of Fair Value Hedges on Consolidated Statements of Income) (Details) - Not Designated As Hedging Instruments - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Derivative [Line Items]
Gain (Loss) Recognized in Consolidated Statements of Income	$ (6,431)	$ (4,913)	$ 1,646
Interest rate contracts
Derivative [Line Items]
Gain (Loss) Recognized in Consolidated Statements of Income	1,570	100	(777)
Mortgage derivatives | Mortgage derivatives - interest rate lock commitments
Derivative [Line Items]
Gain (Loss) Recognized in Consolidated Statements of Income	(1,756)	(4,154)	4,969
Mortgage derivatives | Mortgage derivatives - forward commitments to sell fixed-rate mortgage loans
Derivative [Line Items]
Gain (Loss) Recognized in Consolidated Statements of Income	277	1,489	(1,443)
Risk participation agreements
Derivative [Line Items]
Gain (Loss) Recognized in Consolidated Statements of Income	33	269	(213)
Foreign exchange contracts
Derivative [Line Items]
Gain (Loss) Recognized in Consolidated Statements of Income	(555)	39	0
Visa Derivative Liability
Derivative [Line Items]
Gain (Loss) Recognized in Consolidated Statements of Income	$ (6,000)	$ (2,656)	(890)
Swap
Derivative [Line Items]
Gain (Loss) Recognized in Consolidated Statements of Income			$ 2,500

Commitments and Contingencies -

Commitments and Contingencies - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Loss Contingencies [Line Items]
Reserve for unfunded commitments	$ 57,500,000
Financing receivable, allowance for credit loss	443,424,000	$ 427,597,000	$ 605,736,000	$ 281,402,000
Other Assets
Loss Contingencies [Line Items]
Guarantor obligations, advanced payment to merchant	15,300,000	15,300,000
Unfunded Loan Commitment
Loss Contingencies [Line Items]
Financing receivable, allowance for credit loss		41,900,000
Minimum
Loss Contingencies [Line Items]
Total letters of credit and unfunded lending commitments	0
Maximum
Loss Contingencies [Line Items]
Total letters of credit and unfunded lending commitments	5,000,000
Guarantee Obligations
Loss Contingencies [Line Items]
Guarantor obligations, monetary amount	119,200,000,000	105,140,000,000
Total letters of credit and unfunded lending commitments	$ 17,181,946,000	$ 16,256,231,000

Commitments and Contingencies_2

Commitments and Contingencies - Small Business Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Loss Contingencies [Line Items]
Carrying amount included in other assets	$ 488,944	$ 426,137
Amount of future funding commitments	283,212	250,733
Permanent and short-term construction loans and letter of credit commitments	177,998	204,391
Funded portion of permanent and short-term loans and letters of credit	234,166	104,315
Letters of credit
Loss Contingencies [Line Items]
Total letters of credit and unfunded lending commitments	220,622	183,463
Amounts participated	25,700	26,100
Commitments to fund commercial and industrial loans
Loss Contingencies [Line Items]
Total letters of credit and unfunded lending commitments	9,970,733	9,595,793
Commitments to fund commercial real estate, construction, and land development loans
Loss Contingencies [Line Items]
Total letters of credit and unfunded lending commitments	3,629,531	3,593,171
Commitments under home equity lines of credit
Loss Contingencies [Line Items]
Total letters of credit and unfunded lending commitments	2,156,641	1,805,869
Unused credit card lines
Loss Contingencies [Line Items]
Total letters of credit and unfunded lending commitments	461,443	473,582
Other loan commitments
Loss Contingencies [Line Items]
Total letters of credit and unfunded lending commitments	742,976	604,353
Guarantee Obligations
Loss Contingencies [Line Items]
Total letters of credit and unfunded lending commitments	17,181,946	16,256,231
Permanent and Short-term Construction Loans and Letter of Credit Commitments
Loss Contingencies [Line Items]
Amounts participated	4,700	6,000
Funded Portion of Permanent and Short-term Loans and Letters of Credit
Loss Contingencies [Line Items]
Amounts participated	$ 6,900	$ 3,000

Share-based Compensation and _3

Share-based Compensation and Other Employment Benefit Plans - Narrative (Details) $ in Millions	12 Months Ended
	Dec. 31, 2022 USD ($) simulation shares	Dec. 31, 2021 USD ($) shares	Dec. 31, 2020 USD ($) shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award requisite service period	3 years
Unrecognized compensation cost	$ 31.8
Unrecognized compensation cost, period of recognition (years)	1 year 10 months 2 days
Stock option grants (in shares) | shares	0	0	0
Options outstanding, intrinsic value	$ 15.8
Options outstanding, weighted average remaining contractual term (years)	1 year 9 months 3 days
Options exercised, intrinsic value	$ 10	$ 21.3	$ 5.3
Stock purchase plans compensation expense	$ 1.1	1.1	1.1
Performance Share Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of simulations | simulation	100,000
Non-option awards vested, total fair value	$ 2.2	$ 2.4	$ 7.9
Performance Share Units (PSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
Percentage of awards subject to market condition	50%	50%	50%
Percentage of awards subject to ROATCE	50%
Restricted Share Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-option awards vested, total fair value	$ 28	$ 19.8	$ 13.4
Minimum | Performance Share Units (PSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options, vested and expected to vest, range based on return on average assets	0%
Maximum | Performance Share Units (PSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options, vested and expected to vest, range based on return on average assets	150%
2021 Omnibus Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares of authorized but unissued common stock reserved for future grants (in shares) | shares	5,800,000
Common stock, reserved for future issuance (in shares) | shares	5,200,000

Share-based Compensation and _4

Share-based Compensation and Other Employment Benefit Plans - Expenses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Salaries and other personnel expense
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total share-based compensation expense included in non-interest expense	$ 26,751	$ 26,957	$ 17,827
Other operating expense
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total share-based compensation expense included in non-interest expense	1,153	838	814
Non-interest expense
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total share-based compensation expense included in non-interest expense	$ 27,904	$ 27,795	$ 18,641

Share-based Compensation and _5

Share-based Compensation and Other Employment Benefit Plans - Stock Options (Details) - $ / shares	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Quantity
Outstanding at beginning of year (in shares)	1,478,000	2,401,000	3,037,000
Assumed in acquisition (in shares)	0	0	0
Options exercised (in shares)	(365,000)	(923,000)	(572,000)
Options expired/canceled (in shares)	0	0	(64,000)
Options outstanding at end of year (in shares)	1,113,000	1,478,000	2,401,000
Options exercisable at end of year (in shares)	1,113,000	1,478,000	2,401,000
Weighted-Average Exercise Price
Outstanding at beginning of year (in dollars per share)	$ 22.71	$ 22.47	$ 22.74
Assumed in acquisition (in dollars per share)	0	0	0
Options exercised (in dollars per share)	20.27	22.07	22.67
Options expired (in dollars per share)	0	0	33.50
Options outstanding at end of year (in dollars per share)	23.51	22.71	22.47
Options exercisable at end of year (in dollars per share)	$ 23.51	$ 22.71	$ 22.47

Share-based Compensation and _6

Share-based Compensation and Other Employment Benefit Plans - Fair Value Assumptions-RSUs (Details) - Restricted Share Units	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate	2.87%	2.87%	1.42%
Expected stock price volatility	57.20%	56.10%	25.40%
Simulation period	2 years 10 months 24 days	2 years 10 months 24 days	3 years

Share-based Compensation and _7

Share-based Compensation and Other Employment Benefit Plans - Restricted Stock Units Activity (Details) - $ / shares	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Restricted Share Units
Quantity
Outstanding, beginning of period (in shares)	1,245,000	1,221,000	817,000
Granted (in shares)	608,000	599,000	822,000
Vested (in shares)	(571,000)	(482,000)	(384,000)
Forfeited (in shares)	(58,000)	(93,000)	(34,000)
Outstanding, end of period (in shares)	1,224,000	1,245,000	1,221,000
Weighted-Average Grant Date Fair Value
Outstanding, beginning of period, weighted-average grant-date fair value (in dollars per share)	$ 37	$ 34.50	$ 38.32
Granted, weighted-average grant-date fair value (in dollars per share)	48.14	42.31	32.42
Vested, weighted-average grant-date fair value (in dollars per share)	36.98	37.05	38.04
Forfeited, weighted-average grant-date fair value (in dollars per share)	42.21	31.41	35.97
Outstanding, end of period, weighted-average grant-date fair value (in dollars per share)	$ 41.80	$ 37	$ 34.50
Performance Share Units
Quantity
Outstanding, beginning of period (in shares)	522,000	439,000	495,000
Granted (in shares)	29,000	141,000	204,000
Vested (in shares)	(45,000)	(58,000)	(214,000)
Forfeited (in shares)	(34,000)	0	(46,000)
Outstanding, end of period (in shares)	472,000	522,000	439,000
Weighted-Average Grant Date Fair Value
Outstanding, beginning of period, weighted-average grant-date fair value (in dollars per share)	$ 37.59	$ 39.37	$ 40.85
Granted, weighted-average grant-date fair value (in dollars per share)	54.76	42.94	37.74
Vested, weighted-average grant-date fair value (in dollars per share)	38.86	42.43	41.31
Forfeited, weighted-average grant-date fair value (in dollars per share)	43.06	0	39.03
Outstanding, end of period, weighted-average grant-date fair value (in dollars per share)	$ 44.11	$ 37.59	$ 39.37

Share-based Compensation and _8

Share-based Compensation and Other Employment Benefit Plans - Other Employee Benefit Plans (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Share-Based Payment Arrangement [Abstract]
Employer matching contribution, percent	100%	100%	100%
401(k) percent of match	5%	5%	5%
Annual contribution	$ 23	$ 21.5	$ 21.3
Stock purchase plan, percent of match	15%	15%	15%
Stock purchase plans compensation expense	$ 1.1	$ 1.1	$ 1.1

Income Taxes - Components of In

Income Taxes - Components of Income Tax Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Current
Federal	$ 167,255	$ 153,911	$ 187,741
State	28,152	29,982	9,421
Total current income tax expense	195,407	183,893	197,162
Deferred
Federal	11,570	28,873	(90,777)
State	(702)	16,127	4,585
Total deferred income tax expense (benefit)	10,868	45,000	(86,192)
Total income tax expense	$ 206,275	$ 228,893	$ 110,970

Income Taxes - Effective Income

Income Taxes - Effective Income Tax Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Income tax expense at statutory federal income tax rate	$ 202,477	$ 207,765	$ 101,779
State income tax expense, net of federal income tax benefit	21,981	38,452	11,168
Income not subject to tax	(9,346)	(10,455)	(9,207)
Low income housing tax credits and other tax benefits, net of amortization	(6,336)	(4,858)	(2,611)
FDIC premiums	5,517	4,111	4,744
General business tax credits	(3,293)	(3,727)	(657)
Excess tax benefit from share-based compensation	(3,153)	(3,084)	311
Executive compensation	2,152	1,096	1,501
Goodwill impairment	0	0	9,424
Other, net	(3,724)	(407)	(5,482)
Total income tax expense	$ 206,275	$ 228,893	$ 110,970
Effective tax rate	21.40%	23.10%	22.90%

Income Taxes - Deferred Tax Ass

Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Deferred income tax assets
Net unrealized losses on investment securities available for sale and cash flow hedges	$ 455,744	$ 19,261
Allowance for credit losses	121,941	112,180
Lease liability	107,818	102,412
Employee benefits and deferred compensation	42,746	36,701
Net operating loss carryforwards	23,590	23,897
Tax credit carryforwards	14,553	15,870
Unrealized losses on fair value hedges	11,101	0
Miscellaneous accrued expenses	5,125	3,870
Fair value of investment securities and loans	2,019	6,439
Non-performing loan interest	2,695	2,621
Deferred revenue	0	14,616
Other	6,585	6,182
Total gross deferred tax assets	793,917	344,049
Less valuation allowance	(19,114)	(19,003)
Total deferred tax assets	774,803	325,046
Deferred tax liabilities
Right-of-use asset	(102,945)	(98,773)
Excess tax over financial statement depreciation	(23,762)	(27,355)
Purchase accounting intangibles	(15,224)	(14,820)
Deferred loan fees	(15,901)	0
Unrealized gain on hedged liabilities	(11,101)	0
Prepaid expense	(4,947)	(4,631)
Other properties held for sale	(2,828)	(5,345)
Other	(2,778)	(5,071)
Total gross deferred tax liabilities	(179,486)	(155,995)
Net deferred tax assets	$ 595,317	$ 169,051

Income Taxes - Narrative (Detai

Income Taxes - Narrative (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Income Tax Contingency [Line Items]
Valuation allowance	$ 19,114	$ 19,003
Federal and State
Income Tax Contingency [Line Items]
Deferred tax assets, subject to expiration	23,600
State
Income Tax Contingency [Line Items]
Tax credit carryforward, amount	$ 14,600

Income Taxes - Tax Carryforward

Income Taxes - Tax Carryforwards (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Operating Loss Carryforwards [Line Items]
Deferred Tax Asset, Before Valuation Allowance	$ 793,917	$ 344,049
Valuation Allowance	(19,114)	(19,003)
Total deferred tax assets	774,803	$ 325,046
Federal | Net Operating Loss | 2027-2033
Operating Loss Carryforwards [Line Items]
Deferred Tax Asset, Before Valuation Allowance	18,969
Valuation Allowance	(15,544)
Total deferred tax assets	3,425
State | Net Operating Loss | 2027-2042
Operating Loss Carryforwards [Line Items]
Deferred Tax Asset, Before Valuation Allowance	4,621
Valuation Allowance	(3,570)
Total deferred tax assets	1,051
State | Other Credits | 2023-2032
Operating Loss Carryforwards [Line Items]
Deferred Tax Asset, Before Valuation Allowance	14,553
Valuation Allowance	0
Total deferred tax assets	$ 14,553

Income Taxes - Unrecognized Tax

Income Taxes - Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Reconciliation of Unrecognized Income Tax Benefits
Balance at January 1,	$ 25,104	$ 20,250	$ 20,994
Additions based on income tax positions related to current year	649	3,754	461
Additions for income tax positions of prior years	247	1,379	147
Reductions for income tax positions of prior years	(1,215)	(200)	(327)
Statute of limitation expirations	(2,002)	(79)	(820)
Settlements	(383)	0	(205)
Balance at December 31,	22,400	25,104	20,250
Unrecognized tax benefits, income tax penalties and interest accrued	3,200	3,300	2,700
Unrecognized tax benefits that would impact effective tax rate	20,900	$ 23,500	$ 19,100
Approximate range of uncertain income tax positions expected to be settled or resolved during the next 12 months, minimum	$ 1,400

Segment Reporting - Narrative (

Segment Reporting - Narrative (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($) segment	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | segment	4
Increase in PPP fees	$ 12,600	$ 79,200	$ 46,000
Investment securities gains (losses), net	0	(799)	78,931
Goodwill impairment	$ 0	$ 0	44,877
Operating Segments | Consumer Banking Reporting Unit
Segment Reporting Information [Line Items]
Goodwill impairment			$ 44,900

Segment Reporting - Schedule of

Segment Reporting - Schedule of Segment Reporting Information, by Segment (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($) employee	Dec. 31, 2021 USD ($) employee	Dec. 31, 2020 USD ($)
Income Statement Related Disclosures
Net interest income	$ 1,796,900	$ 1,532,947	$ 1,512,748
Non-interest revenue	409,336	450,066	506,513
Non-interest expense	1,157,506	1,099,904	1,179,574
Pre-provision net revenue	1,048,730	883,109	839,687
Balance Sheet Related Disclosures
Loans, net of deferred fees and costs	43,716,353	39,311,958
Deposits	$ 48,871,559	$ 49,427,276
Full-time equivalent employees | employee	5,027	4,887
Operating Segments | Wholesale Banking
Income Statement Related Disclosures
Net interest income	$ 691,535	$ 558,469	548,398
Non-interest revenue	39,262	34,590	26,379
Non-interest expense	114,212	90,198	85,292
Pre-provision net revenue	616,585	502,861	489,485
Balance Sheet Related Disclosures
Loans, net of deferred fees and costs	25,865,667	21,496,050
Deposits	$ 12,942,732	$ 12,795,224
Full-time equivalent employees | employee	337	284
Operating Segments | Community Banking
Income Statement Related Disclosures
Net interest income	$ 412,660	$ 399,261	403,535
Non-interest revenue	50,077	48,301	37,753
Non-interest expense	130,398	115,366	115,561
Pre-provision net revenue	332,339	332,196	325,727
Balance Sheet Related Disclosures
Loans, net of deferred fees and costs	8,138,606	8,231,451
Deposits	$ 10,798,409	$ 12,557,631
Full-time equivalent employees | employee	624	617
Operating Segments | Consumer Banking
Income Statement Related Disclosures
Net interest income	$ 465,840	$ 409,439	450,486
Non-interest revenue	86,570	79,725	73,503
Non-interest expense	189,839	175,451	181,510
Pre-provision net revenue	362,571	313,713	342,479
Balance Sheet Related Disclosures
Loans, net of deferred fees and costs	2,933,504	2,559,892
Deposits	$ 18,561,521	$ 19,668,846
Full-time equivalent employees | employee	1,503	1,522
Operating Segments | Financial Management Services
Income Statement Related Disclosures
Net interest income	$ 69,539	$ 78,647	79,116
Non-interest revenue	182,861	211,002	224,620
Non-interest expense	171,325	184,133	232,180
Pre-provision net revenue	81,075	105,516	71,556
Balance Sheet Related Disclosures
Loans, net of deferred fees and costs	5,157,014	4,994,494
Deposits	$ 102,496	$ 401,969
Full-time equivalent employees | employee	768	794
Treasury and Corporate Other
Income Statement Related Disclosures
Net interest income	$ 157,326	$ 87,131	31,213
Non-interest revenue	50,566	76,448	144,258
Non-interest expense	551,732	534,756	565,031
Pre-provision net revenue	(343,840)	(371,177)	$ (389,560)
Balance Sheet Related Disclosures
Loans, net of deferred fees and costs	1,621,562	2,030,071
Deposits	$ 6,466,401	$ 4,003,606
Full-time equivalent employees | employee	1,795	1,670

Condensed Financial Informati_3

Condensed Financial Information Of Synovus Financial Corp. (Parent Company Only) - Condensed Balance Sheets (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
ASSETS
Cash due from bank subsidiary	$ 624,097	$ 432,925
Total cash, cash equivalents, and restricted cash	1,977,780	3,009,853	$ 4,252,917	$ 1,186,918
Other assets	2,471,638	1,790,198
Total assets	59,731,378	57,317,226
Liabilities and Shareholders' Equity
Long-term debt	4,109,597	1,204,229
Other liabilities	1,524,449	1,124,588
Total liabilities	55,255,577	52,020,426
Shareholders’ equity:
Preferred stock	537,145	537,145
Common stock	170,141	169,384
Additional paid-in capital	3,920,346	3,894,109
Accumulated other comprehensive income (loss), net	(1,442,117)	(82,321)
Retained earnings	2,234,770	1,709,980
Total shareholders’ equity	4,475,801	5,296,800	5,161,334	4,941,690
Total liabilities and shareholders' equity	59,731,378	57,317,226
Parent Company
ASSETS
Cash due from bank subsidiary	517,235	389,071
Funds due from other depository institutions	7,250	9,277
Total cash, cash equivalents, and restricted cash	524,485	398,348	$ 448,629	$ 374,388
Investment in consolidated bank subsidiary, at equity	4,471,207	5,381,311
Investment in consolidated nonbank subsidiaries, at equity	92,349	69,712
Note receivable from bank subsidiary	100,000	100,000
Other assets	19,431	25,538
Total assets	5,207,472	5,974,909
Liabilities and Shareholders' Equity
Long-term debt	644,490	607,334
Other liabilities	87,181	70,775
Total liabilities	731,671	678,109
Shareholders’ equity:
Preferred stock	537,145	537,145
Common stock	170,141	169,384
Additional paid-in capital	3,920,346	3,894,109
Treasury stock	(944,484)	(931,497)
Accumulated other comprehensive income (loss), net	(1,442,117)	(82,321)
Retained earnings	2,234,770	1,709,980
Total shareholders’ equity	4,475,801	5,296,800
Total liabilities and shareholders' equity	$ 5,207,472	$ 5,974,909

Condensed Financial Informati_4

Condensed Financial Information Of Synovus Financial Corp. (Parent Company Only) - Condensed Statements Of Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Expense
Interest expense	$ 278,887	$ 120,396	$ 291,747
Other expense	1,157,506	1,099,904	1,179,574
Net income	757,902	760,467	373,695
Less: Preferred stock dividends	33,163	33,163	33,163
Net income available to common shareholders	724,739	727,304	340,532
Parent Company
Income
Cash dividends received from subsidiaries	350,000	420,000	547,500
Interest income	1,841	777	3,341
Other income (loss)	(7,203)	1,070	4,966
Total income	344,638	421,847	555,807
Expense
Interest expense	34,154	27,616	42,911
Other expense	17,804	10,300	10,584
Total expense	51,958	37,916	53,495
Income before income taxes and equity in undistributed income of subsidiaries	292,680	383,931	502,312
Allocated income tax benefit	(16,667)	(7,834)	(12,202)
Income before equity in undistributed income of subsidiaries	309,347	391,765	514,514
Equity in undistributed income (loss) of subsidiaries	448,555	368,702	(140,819)
Net income	757,902	760,467	373,695
Less: Preferred stock dividends	33,163	33,163	33,163
Net income available to common shareholders	$ 724,739	$ 727,304	$ 340,532

Condensed Financial Informati_5

Condensed Financial Information Of Synovus Financial Corp. (Parent Company Only) - Condensed Statements of Comprehensive Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Condensed Financial Statements, Captions [Line Items]
Net income	$ 757,902	$ 760,467	$ 373,695
Other comprehensive income (loss)	(1,359,796)	(240,956)	92,994
Comprehensive income (loss)	(601,894)	519,511	466,689
Parent Company
Condensed Financial Statements, Captions [Line Items]
Net income	757,902	760,467	373,695
Other comprehensive gain (loss) of bank subsidiary	(1,359,796)	(240,956)	92,994
Other comprehensive income (loss)	(1,359,796)	(240,956)	92,994
Comprehensive income (loss)	$ (601,894)	$ 519,511	$ 466,689

Condensed Financial Informati_6

Condensed Financial Information Of Synovus Financial Corp. (Parent Company Only) - Condensed Statements of Cash Flows (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Operating Activities
Net income	$ 757,902	$ 760,467	$ 373,695
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Other	677	0	55,343
Net cash provided by operating activities	1,191,489	794,016	17,032
Investing Activities
Net cash used in investing activities	(4,855,482)	(4,384,166)	(2,352,973)
Financing Activities
Repurchase of common stock	(12,987)	(199,932)	(16,246)
Repayments and redemption of long-term debt	(700,000)	0	(2,408,939)
Proceeds from long-term debt, net	3,622,892	0	1,445,492
Other	0	(1,104)	(1,552)
Net cash provided by financing activities	2,631,920	2,347,086	5,401,940
Increase (decrease) in cash and cash equivalents including restricted cash	(1,032,073)	(1,243,064)	3,065,999
Cash, cash equivalents, and restricted cash at beginning of year	3,009,853	4,252,917	1,186,918
Cash, cash equivalents, and restricted cash at end of year	1,977,780	3,009,853	4,252,917
Income taxes paid	175,680	204,214	110,828
Interest paid	242,040	132,923	319,282
Parent Company
Operating Activities
Net income	757,902	760,467	373,695
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Equity in undistributed (income) loss of subsidiaries	(448,555)	(368,702)	140,819
Deferred income tax expense (benefit)	143	(7,296)	3,962
Net increase (decrease) in other liabilities	3,233	(2,082)	11,243
Net (increase) decrease in other assets	8,022	5,280	17,441
Other	825	928	(5,132)
Net cash provided by operating activities	321,570	388,595	542,028
Investing Activities
Proceeds from sales of equity securities	0	0	23,141
Increase in other investments	(1,027)	(10,000)	0
Net cash used in investing activities	(1,027)	(10,000)	23,141
Financing Activities
Dividends paid to common and preferred shareholders	(229,311)	(227,840)	(223,130)
Repurchase of common stock	(12,987)	(199,932)	(16,246)
Repayments and redemption of long-term debt	(300,000)	0	(250,000)
Proceeds from long-term debt, net	347,892	0	0
Other	0	(1,104)	(1,552)
Net cash provided by financing activities	(194,406)	(428,876)	(490,928)
Increase (decrease) in cash and cash equivalents including restricted cash	126,137	(50,281)	74,241
Cash, cash equivalents, and restricted cash at beginning of year	398,348	448,629	374,388
Cash, cash equivalents, and restricted cash at end of year	524,485	398,348	448,629
Income taxes paid	173,900	203,200	119,100
Interest paid	$ 29,900	$ 27,300	$ 42,000

Subsequent Event (Details)

Subsequent Event (Details) - 5.625% Senior Bank Notes due 2028 - Subsequent Event - Senior Notes	Feb. 15, 2023 USD ($)
Subsequent Event [Line Items]
Debt, face amount	$ 500,000,000
Stated percentage	5.625%
Redemption price, percentage	100%
US Treasury Rate
Subsequent Event [Line Items]
Basis spread on variable rate	0.30%

Uncategorized Items - syn-20221

Label	Element	Value
Accounting Standards Update [Extensible Enumeration]	us-gaap_AccountingStandardsUpdateExtensibleList	Accounting Standards Update 2016-13 [Member]