Synovus Financial (SNV) 10-K 25 Feb 22 2021 FY Annual report Financial data

Cover Page

Cover Page - USD ($)	12 Months Ended
	Dec. 31, 2021	Feb. 23, 2022	Jun. 30, 2021
Entity Information [Line Items]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2021
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			$ 6,104,918,737
Entity Common Stock, Shares Outstanding		145,463,669
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 27, 2022 (“Proxy Statement”) Part III
Entity Central Index Key	0000018349
Document Fiscal Year Focus	2021
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, 2021
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, 2021	Dec. 31, 2020
ASSETS
Cash and due from banks	$ 432,925	$ 531,579
Interest-bearing funds with Federal Reserve Bank	2,479,006	3,586,565
Interest earning deposits with banks	25,535	20,944
Federal funds sold and securities purchased under resale agreements	72,387	113,829
Total cash, cash equivalents, and restricted cash	3,009,853	4,252,917
Investment securities available for sale, at fair value	10,918,329	7,962,438
Loans held for sale (includes $108,198 and $216,647, measured at fair value, respectively)	750,642	760,123
Loans, net of deferred fees and costs	39,311,958	38,252,984
Allowance for loan losses	(427,597)	(605,736)
Loans, net	38,884,361	37,647,248
Cash surrender value of bank-owned life insurance	1,068,616	1,049,373
Premises, equipment and software, net	407,241	463,959
Goodwill	452,390	452,390
Other intangible assets, net	35,596	45,112
Other assets	1,790,198	1,760,599
Total assets	57,317,226	54,394,159
Deposits:
Non-interest-bearing deposits	16,392,653	13,477,854
Interest-bearing deposits	33,034,623	33,213,717
Total deposits	49,427,276	46,691,571
Securities sold under repurchase agreements	264,133	227,922
Long-term debt	1,204,229	1,202,494
Other liabilities	1,124,788	1,110,838
Total liabilities	52,020,426	49,232,825
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 169,383,758 and 168,132,522; outstanding 145,010,086 and 148,039,495	169,384	168,133
Additional paid-in capital	3,894,109	3,851,208
Treasury stock, at cost; 24,373,672 and 20,093,027 shares	(931,497)	(731,806)
Accumulated other comprehensive income (loss), net	(82,321)	158,635
Retained earnings	1,709,980	1,178,019
Total shareholders’ equity	5,296,800	5,161,334
Total liabilities and shareholders' equity	$ 57,317,226	$ 54,394,159

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Statement of Financial Position [Abstract]
Loans held-for-sale, fair value disclosure	$ 108,198	$ 216,647
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)	169,383,758	168,132,522
Common stock, shares outstanding (in shares)	145,010,086	148,039,495
Treasury stock, shares at cost (in shares)	24,373,672	20,093,027

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Statement [Abstract]
Loans, including fees		$ 1,482,567	$ 1,600,462	$ 1,817,285
Investment securities available for sale		140,077	178,575	208,826
Loans held for sale		23,809	15,078	3,254
Federal Reserve Bank balances		3,777	2,839	10,384
Other earning assets		3,113	7,541	10,889
Total interest income		1,653,343	1,804,495	2,050,638
Interest expense:
Deposits		74,919	217,777	356,949
Federal funds purchased, securities sold under repurchase agreements, and other liabilities		128	7,917	26,185
Long-term debt		45,349	66,053	71,701
Total interest expense		120,396	291,747	454,835
Net interest income		1,532,947	1,512,748	1,595,803
Provision for (reversal of) credit losses	[1]	(106,251)	355,022	87,720
Net interest income after provision for credit losses		1,639,198	1,157,726	1,508,083
Non-interest revenue:
Service charges on deposit accounts		86,310	73,132	88,190
Fiduciary and asset management fees		77,147	63,251	58,388
Card fees		51,399	42,702	45,659
Brokerage revenue		56,439	44,781	41,608
Mortgage banking income		54,371	91,413	32,599
Capital markets income		26,118	27,336	30,529
Income from bank-owned life insurance		38,019	31,297	21,226
Investment securities gains (losses), net		(799)	78,931	(7,659)
Other non-interest revenue		61,062	53,670	45,360
Total non-interest revenue		450,066	506,513	355,900
Non-interest expense:
Salaries and other personnel expense		649,426	618,214	570,036
Net occupancy, equipment, and software expense		169,222	169,658	161,906
Third-party processing and other services		86,688	87,992	79,225
Professional fees		32,785	56,899	35,300
FDIC insurance and other regulatory fees		22,355	25,210	31,696
Goodwill impairment		0	44,877	0
Restructuring charges		7,223	26,991	1,230
Merger-related expense		0	0	56,580
Other operating expense		132,205	149,733	162,995
Non-interest expense		1,099,904	1,179,574	1,098,968
Income before income taxes		989,360	484,665	765,015
Income tax expense		228,893	110,970	201,235
Net income		760,467	373,695	563,780
Less: Preferred stock dividends		33,163	33,163	22,881
Net income available to common shareholders		$ 727,304	$ 340,532	$ 540,899
Net income per common share, basic (in dollars per share)		$ 4.95	$ 2.31	$ 3.50
Net income per common share, diluted (in dollars per share)		$ 4.90	$ 2.30	$ 3.47
Weighted average common shares outstanding, basic (in shares)		147,041	147,415	154,331
Weighted average common shares outstanding, diluted (in shares)		148,495	148,210	156,058
[1]	Beginning January 1, 2020, provision calculation is based on current expected credit loss methodology. Prior to January 1, 2020, calculation was based on incurred loss methodology.

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Statement of Comprehensive Income [Abstract]
Income before income taxes and equity in undistributed income of subsidiaries	$ 989,360	$ 484,665	$ 765,015
Net income, income tax	(228,893)	(110,970)	(201,235)
Net income	760,467	373,695	563,780
Before-tax Amount
Net unrealized gains (losses) arising during the period	(234,550)	108,626	217,501
Reclassification adjustment for realized (gains) losses included in net income	799	(78,931)	7,659
Net change	(233,751)	29,695	225,160
Income Tax
Net unrealized gains (losses) arising during the period	60,304	(28,135)	(56,331)
Reclassification adjustment for realized (gains) losses included in net income	(202)	20,443	(1,984)
Net change	60,102	(7,692)	(58,315)
Net of Tax Amount
Net unrealized gains (losses) arising during the period	(174,246)	80,491	161,170
Reclassification adjustment for realized (gains) losses included in net income	597	(58,488)	5,675
Net change	(173,649)	22,003	166,845
Before-tax Amount
Net unrealized gains (losses) arising during the period	(77,948)	99,193	(8,570)
Reclassification adjustment for realized (gains) losses included in net income	(12,862)	(2,765)	0
Net change	(90,810)	96,428	(8,570)
Income Tax
Net unrealized gains (losses) arising during the period	20,243	(25,691)	2,220
Reclassification adjustment for realized (gains) losses included in net income	3,260	716	0
Net change	23,503	(24,975)	2,220
Net of Tax Amount
Net unrealized gains (losses) arising during the period	(57,705)	73,502	(6,350)
Reclassification adjustment for realized (gains) losses included in net income	(9,602)	(2,049)	0
Net change	(67,307)	71,453	(6,350)
Before-tax Amount
Actuarial losses arising during the period	0	0	(510)
Reclassification adjustment for realized gains included in net income	0	(618)	(70)
Net change	0	(618)	(580)
Income Tax
Actuarial losses arising during the period	0	0	132
Reclassification adjustment for realized gains included in net income	0	156	14
Net change	0	156	146
Net of Tax Amount
Actuarial losses arising during the period	0	0	(378)
Reclassification adjustment for realized gains included in net income	0	(462)	(56)
Net change	0	(462)	(434)
Other comprehensive income (loss), before-tax amount	(324,561)	125,505	216,010
Other comprehensive income (loss), income tax	83,605	(32,511)	(55,949)
Net current period other comprehensive income (loss)	(240,956)	92,994	160,061
Comprehensive income	$ 519,511	$ 466,689	$ 723,841

Consolidated Statements of Chan

Consolidated Statements of Changes in Shareholders' Equity - USD ($) $ in Thousands		Total	Cumulative Effect, Period of Adoption, Adjustment		FCB Financial Holdings, Inc.	Series E Preferred Stock	Preferred Stock	Preferred StockSeries E Preferred Stock	Common Stock	Common StockFCB Financial Holdings, Inc.	Additional Paid-in Capital	Additional Paid-in CapitalFCB Financial Holdings, Inc.	Treasury Stock	Treasury StockFCB Financial Holdings, Inc.	AOCI	Retained Earnings	Retained EarningsCumulative Effect, Period of Adoption, Adjustment		Retained EarningsFCB Financial Holdings, Inc.
Beginning balance at Dec. 31, 2018		$ 3,133,602	$ 4,270				$ 195,140		$ 143,300		$ 3,060,561		$ (1,014,746)		$ (94,420)	$ 843,767	$ 4,270
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		563,780														563,780
Other comprehensive income (loss), net of income taxes		160,061													160,061
Issuance of common stock for earnout payment		11,846			$ 704,146				344	$ 22,043	11,502	$ 682,103
Common stock reissued					877,570									$ 1,014,746					$ (137,176)
Fair value of exchanged equity awards and warrants attributed to purchase price					$ 43,972							$ 43,972
Cash dividends declared on common stock		(183,091)														(183,091)
Cash dividends declared on preferred stock	[1]	(22,881)														(22,881)
Issuance of preferred stock, net of issuance costs						$ 342,005		$ 342,005
Repurchases of common stock including costs to repurchase		(725,398)							(725,000)				(725,398)
Restricted share unit vesting and taxes paid related to net share settlement		(8,855)							302		(8,831)					(326)
Stock options exercised, net		16,176							812		15,364
Warrants exercised with net settlement and common stock reissued		0									(9,822)		9,838			(16)
Share-based compensation expense		24,487									24,487
Ending balance at Dec. 31, 2019		4,941,690	$ (35,721)	[2]			537,145		166,801		3,819,336		(715,560)		65,641	1,068,327	$ (35,721)	[2]
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
Issuance of common stock for earnout payment		8,695							379		8,316
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)
Restricted share unit vesting and taxes paid related to net share settlement		(7,575)							389		(7,503)					(461)
Stock options 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)
Issuance of common stock for earnout payment		5,080							0		4,955		125
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)
Restricted share unit vesting and taxes paid related to net share settlement		(7,544)							355		(6,254)					(1,645)
Stock options 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
[1]	For the years ended December 31, 2021 and 2020, dividends per share were $1.58 and $1.47 for Series D and Series E Preferred Stock, respectively. For the year ended December 31, 2019, dividends per share were $1.58 and $0.73 for Series D and E Preferred Stock. respectively.
[2]	For additional information, see "Part II - Item 8. Financial Statements and Supplementary Data - Note 1 - Summary of Significant Accounting Policies.

Consolidated Statements of Ch_2

Consolidated Statements of Changes in Shareholders' Equity (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Accounting standards update [Extensible Enumeration]			Accounting Standards Update 2016-13 [Member]	Accounting Standards Update 2016-02
Common stock, dividends, per share, declared (in dollars per share)	$ 1.32	$ 1.32	$ 1.20
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	$ 0.73

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Operating Activities
Net income		$ 760,467	$ 373,695	$ 563,780
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for (reversal of) credit losses	[1]	(106,251)	355,022	87,720
Depreciation, amortization, and accretion, net		157,987	106,107	8,079
Deferred income tax expense (benefit)		45,000	(86,192)	86,633
Originations of loans held for sale		(3,698,368)	(3,466,170)	(872,105)
Proceeds from sales of loans held for sale		3,749,502	2,936,398	816,223
Gain on sales of loans held for sale, net		(42,513)	(67,115)	(21,448)
Increase in other assets		(78,728)	(411,632)	(127,636)
Increase (decrease) in other liabilities		(21,674)	281,866	43,066
Investment securities (gains) losses, net		799	(78,931)	7,659
Share-based compensation expense		27,795	18,641	24,487
Other		0	55,343	4,592
Net cash provided by operating activities		794,016	17,032	621,050
Investing Activities
Net cash received in business combination, net of cash paid		0	0	201,100
Proceeds from maturities and principal collections of investment securities available for sale		3,051,158	2,291,536	1,102,651
Proceeds from sales of investment securities available for sale		565,400	2,649,686	2,923,787
Purchases of investment securities available for sale		(6,877,712)	(6,036,179)	(4,300,021)
Proceeds from sales of loans		111,168	1,426,954	74,123
Purchases of loans		(1,624,182)	(126,152)	(667,954)
Net (increase) decrease in loans		373,964	(2,461,302)	(1,361,693)
Net purchases of Federal Reserve Bank stock		(1,220)	(658)	(55,335)
Net (purchases) redemptions of Federal Home Loan Bank stock		(1,200)	129,710	(45,856)
Net (purchases) proceeds from settlement of bank-owned life insurance policies		19,045	(242,300)	16,637
Net increase in premises, equipment and software		(25,954)	(30,102)	(61,208)
Other		25,367	45,834	19,907
Net cash used in investing activities		(4,384,166)	(2,352,973)	(2,153,862)
Financing Activities
Net increase in deposits		2,735,705	8,284,519	797,612
Net increase (decrease) in federal funds purchased and securities sold under repurchase agreements		36,211	62,232	(101,142)
Net increase (decrease) in other short-term borrowings		0	(1,745,843)	1,103,560
Repayments and redemption of long-term debt		0	(2,408,939)	(157,226)
Proceeds from issuance of long-term debt, net		0	1,445,492	497,045
Dividends paid to common shareholders		(194,677)	(189,967)	(167,923)
Dividends paid to preferred shareholders		(33,163)	(33,163)	(17,741)
Proceeds from issuance of preferred stock, net		0	0	342,005
Issuances, net of taxes paid, under equity compensation plans		11,566	5,407	7,321
Repurchase of common stock		(199,932)	(16,246)	(725,398)
Other		(8,624)	(1,552)	(1,947)
Net cash provided by financing activities		2,347,086	5,401,940	1,576,166
Increase (decrease) in cash and cash equivalents including restricted cash		(1,243,064)	3,065,999	43,354
Cash, cash equivalents, and restricted cash at beginning of year		4,252,917	1,186,918	1,143,564
Cash, cash equivalents, and restricted cash at end of year		3,009,853	4,252,917	1,186,918
Supplemental Disclosures:
Income taxes paid		204,214	110,828	101,781
Interest paid		132,923	319,282	464,712
Non-cash Activities:
Common stock issued, treasury stock reissued, equity awards/warrants exchanged to acquire FCB		0	0	1,625,688
Loans foreclosed and transferred to other real estate		12,408	2,163	19,423
Loans transferred to (from) loans held for sale at fair value		$ (859)	$ 49,821	$ 72,707
[1]	Beginning January 1, 2020, provision calculation is based on current expected credit loss methodology. Prior to January 1, 2020, calculation was based on incurred loss methodology.

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2021
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, 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 significant 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 non-interest income (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. Immaterial Correction of Prior Period Financial Statements During the third quarter of 2021, the Company made corrections to proceeds and purchases of investment securities available for sale by adjusting for the impact of timing differences associated with unsettled trades that crossed certain reporting periods. The Company concluded that the corrections were not material to any prior or current periods from a combined qualitative and quantitative perspective. A summary of corrections is presented below. Corrected Consolidated Statement of Cash Flows (unaudited) Year Ended December 31, 2020 (in thousands) As Reported Adjustment As Corrected Investing Activities Proceeds from sales of investment securities available for sale $ 4,054,670 $ (1,404,984) $ 2,649,686 Purchases of investment securities available for sale (7,441,163) 1,404,984 (6,036,179) Net cash used in investing activities $ 2,352,973 $ — $ 2,352,973 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 $65.1 million at December 31, 2021 and $158.7 million at December 31, 2020, 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 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. Accrued interest on available for sale debt securities is excluded from the ACL determination and is recognized within other assets on the consolidated balance sheets. Available for sale debt securities are placed on non-accrual status when we no longer expect to receive all contractual amounts due, which is generally at 90 days past due. Accrued interest receivable is reversed against interest income when a security is placed on non-accrual status. Accordingly, we do not recognize an allowance for credit loss against accrued interest receivable. 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 periods of reduction 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) On January 1, 2020, Synovus adopted ASU 2016-13 (and all subsequent ASUs on this topic, collectively, ASC 326), which replaced the existing incurred loss impairment guidance with 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. Upon adoption, Synovus applied the modified retrospective approach and recorded an after-tax cumulative-effect adjustment to beginning retained earnings for non-PCD assets (formerly non-PCI assets) and unfunded commitments of $35.7 million. Additionally, an initial estimate of expected credit losses on PCD assets (formerly PCI or ASC 310-30) was recognized with an offset to the cost basis of the related loans of $62.2 million. As permitted by transition guidance, Synovus did not reassess whether PCI assets met the criteria of PCD assets as of the adoption date. The remaining non-credit discount (based on the adjusted amortized cost basis) will be accreted into interest income. Results for reporting periods after adoption are presented under ASC 326 while prior period amounts continue to be reported in accordance with previously applicable GAAP. The following table illustrates the impact of ASC 326 adoption: As of January 1, 2020 in thousands Pre-ASC 326 Adoption Impact of ASC 326 Adoption As Reported under ASC 326 Assets Allowance for loan losses: Commercial and industrial $ 145,782 $ (2,310) $ 143,472 Commercial real estate 67,430 (651) 66,779 Consumer 68,190 85,955 154,145 Total allowance for loan losses $ 281,402 $ 82,994 $ 364,396 Liabilities Reserve for unfunded commitments $ 1,375 $ 27,440 $ 28,815 Allowance for credit losses $ 282,777 $ 110,434 $ 393,211 The following table illustrates the distribution of the ASC 326 adoption impact to loans and equity: As of January 1, 2020 in thousands Pre-ASC 326 Adoption Impact of ASC 326 Adoption As Reported under ASC 326 Loans, net $ 36,881,048 $ (20,767) $ 36,860,281 Retained earnings 1,068,327 (35,721) 1,032,606 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. Loans formerly accounted for as purchased credit-impaired in accordance with ASC 310-30 were automatically transitioned to PCD classification. The Company did not maintain ASC 310-30 pools. PCD loans were integrated into existing pool structures based upon the nature of the loan type and are further segregated based upon the individual loan risk ratings as noted above. 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. For SRR loans, this process begins with a loan rating recommendation from the loan officer responsible for originating the loan. Commercial SRR loans are graded on a 10-point scale and include classifications of special mention, substandard, doubtful, and loss consistent with bank regulatory classifications. The primary determinants of the risk ratings for commercial SRR loans are the reliability of the primary source of repayment and the borrower's expected performance (i.e., the likelihood that the borrower will be able to service its obligations in accordance with the terms). 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. The DRR methodology is used for larger relationships within the C&I loan portfolio as well as certain IPRE loa ns. At December 31, 2021 and 2020, approximat ely 41% a nd 40% of total commercial loans were rated using the DRR methodology, respectively. The DRR includes sixteen PD categories. 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. 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 on a 9-point scale based on credit bureau scores, with a loan grade of 1 assigned as the lowest level of risk and a loan grade of 6 as the highest level of risk. No loans graded higher than 6 at origination are approved for funding. At 90-119 days past due, a loan grade of 7-substandard non-accrual is applied and at 120 days past due, the loan is generally downgraded to grade 9-loss or is 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. FICO scores within the residential real estate portfolio have generally remained stable over the last several years. The Allowance for Loan Losses, for periods before 2020, was established as follows: a. Impaired loans were generally evaluated on a loan by loan basis with specific reserves, if any, recorded as appropriate. Specific reserves were determined based on ASC 310-10-35, which provided for measurement of a loan's impairment based on one of three methods: i) discounted cash flow based upon the loan's contractual effective interest rate, ii) at the loan's observable market price, or iii) at the fair value of the collateral, less costs to sell if the loan was collateral-dependent. b. For loans that were not considered impaired, the allocated allowance for loan losses was calculated consistent with ASC 450, and determined based upon EL factors, which were applied to groupings of specific loan types by loan risk ratings. Allocated EL factors were also adjusted, as necessary, for certain qualitative factors that in management's judgment were necessary to reflect losses incurred in the portfolio. 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

Investment Securities Available

Investment Securities Available for Sale	12 Months Ended
	Dec. 31, 2021
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, 2021 and 2020 are summarized below. 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 December 31, 2020 (in thousands) Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value U.S. Treasury securities $ 20,257 $ — $ — $ 20,257 U.S. Government agency securities 79,638 2,682 — 82,320 Mortgage-backed securities issued by U.S. Government agencies 1,216,012 7,930 (5,925) 1,218,017 Mortgage-backed securities issued by U.S. Government sponsored enterprises 4,865,858 134,188 — 5,000,046 Collateralized mortgage obligations issued by U.S. Government agencies or sponsored enterprises 1,245,644 15,309 (10,576) 1,250,377 Commercial mortgage-backed securities issued by U.S. Government agencies or sponsored enterprises 354,244 16,677 — 370,921 Corporate debt securities and other debt securities 20,211 457 (168) 20,500 Total investment securities available for sale $ 7,801,864 $ 177,243 $ (16,669) $ 7,962,438 At December 31, 2021 and 2020, investment securities with a carrying value of $4.03 billion and $3.84 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, 2021 and December 31, 2020 are presented below. 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) December 31, 2020 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 Mortgage-backed securities issued by U.S. Government agencies $ 566,896 $ (5,925) $ — $ — $ 566,896 $ (5,925) Collateralized mortgage obligations issued by U.S. Government agencies or sponsored enterprises 803,429 (10,576) — — 803,429 (10,576) Corporate debt securities and other debt securities 9,337 (168) — — 9,337 (168) Total $ 1,379,662 $ (16,669) $ — $ — $ 1,379,662 $ (16,669) As of December 31, 2021, Synovus had 143 investment securities in a loss position for less than twelve months and 37 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, 2021. At December 31, 2021, 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, 2021 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, 2021 (in thousands) Within One Year 1 to 5 5 to 10 More Than Total Amortized Cost U.S. Treasury securities $ 20,600 $ — $ 99,865 $ — $ 120,465 U.S. Government agency securities 756 321 52,137 — 53,214 Mortgage-backed securities issued by U.S. Government agencies — 842 131 789,356 790,329 Mortgage-backed securities issued by U.S. Government sponsored enterprises 28 — 80,539 7,983,323 8,063,890 Collateralized mortgage obligations issued by U.S. Government agencies or sponsored enterprises — — 146 951,545 951,691 Commercial mortgage-backed securities issued by U.S. Government agencies or sponsored enterprises — 181,144 211,328 86,948 479,420 Asset-backed securities 514,188 — — — 514,188 Corporate debt securities and other debt securities 9,502 — 8,807 — 18,309 Total amortized cost $ 545,074 $ 182,307 $ 452,953 $ 9,811,172 $ 10,991,506 Fair Value U.S. Treasury securities $ 20,600 $ — $ 97,238 $ — $ 117,838 U.S. Government agency securities 760 322 53,119 — 54,201 Mortgage-backed securities issued by U.S. Government agencies — 870 136 778,627 779,633 Mortgage-backed securities issued by U.S. Government sponsored enterprises 28 — 83,271 7,929,002 8,012,301 Collateralized mortgage obligations issued by U.S. Government agencies or sponsored enterprises — — 150 939,473 939,623 Commercial mortgage-backed securities issued by U.S. Government agencies or sponsored enterprises — 182,821 209,311 89,612 481,744 Asset-backed securities 514,188 — — — 514,188 Corporate debt securities and other debt securities 9,730 — 9,071 — 18,801 Total fair value $ 545,306 $ 184,013 $ 452,296 $ 9,736,714 $ 10,918,329 Gross gains and gross losses on sales of securities available for sale for the years ended December 31, 2021, 2020, and 2019 are presented below. The specific identification method is used to reclassify gains and losses out of other comprehensive income at the time of sale. (in thousands) 2021 2020 2019 Gross realized gains on sales $ 1,191 $ 85,375 $ 10,370 Gross realized losses on sales (1,990) (6,444) (18,029) Investment securities gains (losses), net $ (799) $ 78,931 $ (7,659)

Loans And Allowance For Loan Lo

Loans And Allowance For Loan Losses	12 Months Ended
	Dec. 31, 2021
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, 2021 and December 31, 2020. 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 $ 11,973,974 $ 13,028 $ 3,686 $ 16,714 $ 37,918 $ 23,869 $ 12,052,475 Owner-occupied 7,493,804 3,627 59 3,686 7,146 4,050 7,508,686 Total commercial and industrial 19,467,778 16,655 3,745 20,400 45,064 27,919 19,561,161 Investment properties 9,861,303 1,285 717 2,002 3,273 2,577 9,869,155 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 10,964,883 3,312 964 4,276 9,726 2,605 10,981,490 Consumer mortgages 5,033,579 6,256 126 6,382 29,078 — 5,069,039 Home equity lines 1,269,610 2,619 — 2,619 9,760 — 1,281,989 Credit cards 296,695 1,584 1,277 2,861 — — 299,556 Other consumer loans 2,090,806 20,369 658 21,027 6,890 — 2,118,723 Total consumer 8,690,690 30,828 2,061 32,889 45,728 — 8,769,307 Loans, net of deferred fees and costs $ 39,123,351 $ 50,795 $ 6,770 $ 57,565 $ 100,518 $ 30,524 $ 39,311,958 December 31, 2020 (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 $ 12,321,514 $ 10,256 $ 996 $ 11,252 $ 55,527 $ 21,859 $ 12,410,152 Owner-occupied 7,087,992 1,913 92 2,005 20,019 — 7,110,016 Total commercial and industrial 19,409,506 12,169 1,088 13,257 75,546 21,859 19,520,168 Investment properties 9,075,843 2,751 154 2,905 24,631 — 9,103,379 1-4 family properties 621,492 3,548 36 3,584 2,383 1,236 628,695 Land and development 591,048 422 — 422 1,899 264 593,633 Total commercial real estate 10,288,383 6,721 190 6,911 28,913 1,500 10,325,707 Consumer mortgages 5,495,415 8,851 485 9,336 8,740 — 5,513,491 Home equity lines 1,521,575 4,006 — 4,006 12,145 — 1,537,726 Credit cards 276,778 2,363 1,877 4,240 — — 281,018 Other consumer loans 1,062,899 9,122 477 9,599 2,376 — 1,074,874 Total consumer 8,356,667 24,342 2,839 27,181 23,261 — 8,407,109 Loans, net of deferred fees and costs $ 38,054,556 $ 43,232 $ 4,117 $ 47,349 $ 127,720 $ 23,359 $ 38,252,984 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 $11.1 million and $12.6 million durin g the years ended December 31, 2021 and 2020, respectively. Of the interest income recognized during the years ended December 31, 2021 and 2020, cash-basis interest income was $1.8 million and $3.9 million, respectively. Pledged Loans Loans with carrying values of $14.19 billion and $15.05 billion, respectively, were pledged as collateral for borrowings and capacity at December 31, 2021 and 2020 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 $399.6 million and $2.19 billion net of unearned fees at December 31, 2021 and 2020, 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, HELOCs, and 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 HELOCs 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 HELOCs) 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, 2021 as required by CECL. 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 $ 2,397,405 $ 1,332,549 $ 922,396 $ 607,918 $ 433,045 $ 903,995 $ 5,056,168 $ 42,809 $ 11,696,285 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 51,269 33 222,932 Doubtful (2) 469 — 1,601 8,512 — — 48 — 10,630 Total commercial, financial and agricultural 2,416,710 1,398,694 981,693 637,246 451,760 944,049 5,179,481 42,842 12,052,475 Owner-occupied Pass 1,776,086 1,276,797 1,117,825 858,721 708,942 1,150,386 437,724 — 7,326,481 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 Doubtful (2) — — — — — — — — — Loss 271 — — — — — — — 271 Total owner-occupied 1,784,371 1,298,041 1,130,935 912,199 733,220 1,212,196 437,724 — 7,508,686 Total commercial and industrial 4,201,081 2,696,735 2,112,628 1,549,445 1,184,980 2,156,245 5,617,205 42,842 19,561,161 Investment properties Pass 2,823,978 1,463,503 1,905,534 1,019,765 738,036 1,284,013 278,697 — 9,513,526 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 1,352,050 333,710 — 9,869,155 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 1,460,714 434,073 — 10,981,490 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 $ 1,293,106 $ 1,551,510 $ 570,344 $ 216,277 $ 392,422 $ 991,080 $ 296 $ — $ 5,015,035 Substandard (1) 1,031 3,680 5,943 12,387 5,717 25,025 — — 53,783 Loss (3) — — 5 — — 216 — — 221 Total consumer mortgages 1,294,137 1,555,190 576,292 228,664 398,139 1,016,321 296 — 5,069,039 Home equity lines Pass — — — — — — 1,199,635 67,139 1,266,774 Substandard (1) — — — — — — 9,058 5,359 14,417 Doubtful (2) — — — — — — — — — Loss (3) — — — — — — 658 140 798 Total home equity lines — — — — — — 1,209,351 72,638 1,281,989 Credit cards Pass — — — — — — 298,287 — 298,287 Substandard (1) — — — — — — 521 — 521 Loss (4) — — — — — — 748 — 748 Total credit cards — — — — — — 299,556 — 299,556 Other consumer loans — Pass 654,818 709,077 127,131 50,007 86,175 97,780 385,308 — 2,110,296 Substandard (1) 668 1,550 2,064 1,308 1,892 750 175 — 8,407 Loss — — — — — 20 — — 20 Total other consumer loans 655,486 710,627 129,195 51,315 88,067 98,550 385,483 — 2,118,723 Total consumer 1,949,623 2,265,817 705,487 279,979 486,206 1,114,871 1,894,686 72,638 8,769,307 Loans, net of deferred fees and costs $ 9,422,021 $ 6,553,714 $ 4,897,449 $ 3,086,000 $ 2,559,500 $ 4,731,830 $ 7,945,964 $ 115,480 $ 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. December 31, 2020 Term Loans Amortized Cost Basis by Origination Year Revolving Loans (in thousands) 2020 2019 2018 2017 2016 Prior Amortized Cost Basis Converted to Term Loans Total Commercial, financial and agricultural Pass $ 3,819,048 $ 1,333,460 $ 847,283 $ 582,612 $ 551,413 $ 633,871 $ 4,102,751 $ 49,762 $ 11,920,200 Special Mention 63,307 40,618 12,723 22,070 1,665 5,545 60,741 489 207,158 Substandard (1) 28,698 36,618 24,867 36,072 12,808 35,172 84,498 514 259,247 Doubtful (2) — 3,721 19,778 — — — 48 — 23,547 Total commercial, financial and agricultural 3,911,053 1,414,417 904,651 640,754 565,886 674,588 4,248,038 50,765 12,410,152 Owner-occupied Pass 1,321,680 1,275,435 1,131,183 982,056 555,932 1,297,070 349,566 — 6,912,922 Special Mention 6,170 9,995 10,682 14,138 1,582 13,768 — — 56,335 Substandard (1) 2,570 22,793 42,615 26,033 7,316 29,794 — — 131,121 Doubtful (2) — — 9,638 — — — — — 9,638 Total owner-occupied 1,330,420 1,308,223 1,194,118 1,022,227 564,830 1,340,632 349,566 — 7,110,016 Total commercial and industrial 5,241,473 2,722,640 2,098,769 1,662,981 1,130,716 2,015,220 4,597,604 50,765 19,520,168 Investment properties Pass 1,055,440 2,126,667 1,999,345 1,091,880 483,780 1,301,088 229,044 — 8,287,244 Special Mention 1,482 66,160 176,794 136,004 138,362 129,401 55,440 — 703,643 Substandard (1) 1,007 4,770 24,476 19,820 21,875 40,509 35 — 112,492 Total investment properties 1,057,929 2,197,597 2,200,615 1,247,704 644,017 1,470,998 284,519 — 9,103,379 1-4 family properties Pass 197,320 95,145 70,267 88,454 38,729 97,374 27,657 — 614,946 Special Mention 402 — 508 109 786 118 — — 1,923 Substandard (1) 1,527 653 4,312 1,141 554 2,299 1,340 — 11,826 Total 1-4 family properties 199,249 95,798 75,087 89,704 40,069 99,791 28,997 — 628,695 Land and development Pass 84,985 173,302 83,734 92,911 12,249 76,380 53,250 — 576,811 Special Mention 857 1,995 2,866 282 — 1,332 636 — 7,968 Substandard (1) 1,229 425 4,664 915 136 1,485 — — 8,854 Total land and development 87,071 175,722 91,264 94,108 12,385 79,197 53,886 — 593,633 Total commercial real estate 1,344,249 2,469,117 2,366,966 1,431,516 696,471 1,649,986 367,402 — 10,325,707 December 31, 2020 Term Loans Amortized Cost Basis by Origination Year Revolving Loans (in thousands) 2020 2019 2018 2017 2016 Prior Amortized Cost Basis Converted to Term Loans Total Consumer mortgages Pass $ 1,871,512 $ 874,769 $ 425,711 $ 678,255 $ 685,810 $ 965,382 $ 1,040 $ — $ 5,502,479 Substandard (1) 33 961 748 889 866 7,224 — — 10,721 Loss (3) — — — — — 291 — — 291 Total consumer mortgages 1,871,545 875,730 426,459 679,144 686,676 972,897 1,040 — 5,513,491 Home equity lines Pass — — — — — — 1,429,755 90,832 1,520,587 Substandard (1) — — — — — — 9,698 5,996 15,694 Doubtful (2) — — — — — — — 19 19 Loss (3) — — — — — — 1,283 143 1,426 Total home equity lines — — — — — — 1,440,736 96,990 1,537,726 Credit cards Pass — — — — — — 279,142 — 279,142 Substandard (1) — — — — — — 595 — 595 Loss (4) — — — — — — 1,281 — 1,281 Total credit cards — — — — — — 281,018 — 281,018 Other consumer loans — Pass 252,160 190,820 89,187 100,459 80,365 61,040 297,637 — 1,071,668 Substandard (1) 19 762 262 1,195 121 585 227 — 3,171 Loss — — — — — 35 — — 35 Total other consumer loans 252,179 191,582 89,449 101,654 80,486 61,660 297,864 — 1,074,874 Total consumer 2,123,724 1,067,312 515,908 780,798 767,162 1,034,557 2,020,658 96,990 8,407,109 Loan, net of deferred fees and costs $ 8,709,446 $ 6,259,069 $ 4,981,643 $ 3,875,295 $ 2,594,349 $ 4,699,763 $ 6,985,664 $ 147,755 $ 38,252,984 (1) The majority of loans within Substandard risk grade are accruing loans at December 31, 2020. (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, 2021 and 2020. Rollforward of Allowance for Loan Losses The following tables detail the changes in the ALL by loan segment for the years ended December 31, 2021, 2020, and 2019. On January 1, 2020, Synovus adopted ASC 326, which replaced the existing incurred loss methodology with an expected credit loss methodology (referred to as CECL). Under the incurred loss methodology, reserves for credit losses were recognized only when the losses were probable or had been incurred; under CECL, companies are required to recognize the full amount of expected credit losses for the lifetime of the financial assets, based on historical experience, current conditions and reasonable and supportable forecasts. See "Part II - Item 8. Financial Statements and Supplementary Data - Note 1 - Summary of Significant Accounting Policies" of this Report for more information on Synovus' adoption of CECL. For the year ended December 31, 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. For the year ended December 31, 2019, Synovus had no significant transfers to loans held for sale. 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 As of and For The Year Ended December 31, 2019 (in thousands) Commercial & Industrial Commercial Real Estate Consumer Total Allowance for loan losses: Beginning balance $ 133,123 $ 68,796 $ 48,636 $ 250,555 Charge-offs (49,572) (5,540) (24,023) (79,135) Recoveries 7,827 8,618 5,078 21,523 Provision for (reversal of) loan losses 53,665 (4,444) 38,499 87,720 Transfer of unfunded commitment reserve 739 — — 739 Ending balance $ 145,782 $ 67,430 $ 68,190 $ 281,402 The ALL of $427.6 million and the reserve for unfunded commitments of $41.9 million, which is recorded in other liabilities, comprise the total ACL of $469.5 million at December 31, 2021. The ACL decreased $184.0 million compared to the December 31, 2020 ACL of $653.5 million , which consisted of an ALL of $605.7 million and the reserve for unfunded commitments of $47.8 million . The ACL to loans coverage ratio of 1.19% at December 31, 2021 was 52 bps lower compared to December 31, 2020. The reduction in the overall ACL is due to the notable improvement in the economic environment compared to December 31, 2020 as evidenced by the decrease in the unemployment rate from 6.7% at the end of 2020 to 3.9% at December 31, 2021. Likewise, our economic and credit outlook have progressed substantially compared to 2020. The factors reducing the ACL were partially offset by purchases of $1.62 billion of third-party lending loans as well as net organic loan growth in 2021, requiring additional reserves of $38.6 million. The ACL is estimated using a two one 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, some of which have not been classified as TDRs, and therefore are not included in the discussion below. The following tables represent, by concession type, the post-modification balance for loans modified or renewed during the years ended December 31, 2021, 2020, and 2019 that were reported as accruing or non-accruing TDRs. TDRs by Concession Type 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 lines 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 (2) 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 lines 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 (3) TDRs by Concession Type (continued) Year Ended December 31, 2019 (in thousands, except contract data) Number of Contracts Below Market Interest Rate Other Concessions (1) Total Commercial, financial, and agricultural 127 $ 9,042 $ 9,873 $ 18,915 Owner-occupied 22 9,017 861 9,878 Total commercial and industrial 149 18,059 10,734 28,793 Investment properties 8 1,548 — 1,548 1-4 family properties 18 2,182 643 2,825 Land and development 8 1,187 30 1,217 Total commercial real estate 34 4,917 673 5,590 Consumer mortgages 18 1,587 1,361 2,948 Home equity lines 70 3,024 2,522 5,546 Other consumer loans 109 1,712 5,270 6,982 Total consumer 197 6,323 9,153 15,476 Loans, net of deferred fees and costs 380 $ 29,299 $ 20,560 $ 49,859 (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, 2021, 2020, and 2019. (2) No charge-offs were recorded during the year ended December 31, 2021 upon restructuring of these loans. (3) No charge-offs were recorded during the year ended December 31, 2020 upon restructuring of these loans. (4) No charge-offs were recorded during the year ended December 31, 2019 upon restructuring of these loans. For the years ended December 31, 2021, 2020 and 2019, there were eight defaults with a recorded investment of $978 thousand, seven defaults with a recorded investment of $21.7 million, and four defaults with a recorded investment of $326 thousand, 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, 2021 and 2020, there were no commitments to lend a material amount of additional funds to any client s whose loans were classified as TDR s .

Premises Equipment and Software

Premises Equipment and Software	12 Months Ended
	Dec. 31, 2021
Property, Plant and Equipment [Abstract]
Premises Equipment and Software	Note 4 - Premises, Equipment and Software Premises, equipment and software at December 31, 2021 and 2020 consist of the following: (in thousands) 2021 2020 Land $ 104,768 $ 113,828 Buildings and improvements 361,593 407,735 Leasehold improvements 55,098 53,174 Furniture, equipment and software 441,091 481,560 Construction in progress 18,918 13,052 Total premises, equipment and software 981,468 1,069,349 Less: Accumulated depreciation and amortization (574,227) (605,390) Net premises, equipment and software $ 407,241 $ 463,959 Net premises, equipment, and software

Goodwill And Other Intangible A

Goodwill And Other Intangible Assets	12 Months Ended
	Dec. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangible Assets	Note 5 - Goodwill and Other Intangible Assets Goodwill allocated to each reporting unit at December 31, 2021 and December 31, 2020 is presented as follows: (in thousands) Community Banking Reporting Unit Wholesale Banking Reporting Unit Consumer Mortgage Reporting Unit Wealth Management Reporting Unit Total Balance as of December 31, 2019 $ 256,323 $ 171,636 $ 44,877 $ 24,431 $ 497,267 Goodwill impairment — — (44,877) — (44,877) Balance as of December 31, 2020 $ 256,323 $ 171,636 $ — $ 24,431 $ 452,390 Change in goodwill — — — — — Balance as of December 31, 2021 $ 256,323 $ 171,636 $ — $ 24,431 $ 452,390 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 2021, Synovus completed its annual goodwill impairment evaluation applying ASC 350-20-35-3A Goodwill Subsequent Measurement - Qualitative Assessment Approach and concluded that goodwill was not impaired. During 2020, Synovus recorded a $44.9 million goodwill impairment charge representing all of the goodwill allocated to the Consumer Mortgage reporting unit 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. The following table shows the gross carrying amount and accumulated amortization of other intangible assets as of December 31, 2021 and 2020, 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, 2021, 2020, and 2019 was $9.5 million, $10.6 million, and $11.6 million, respectively, and is included in amortization of intangibles expense within non-interest expense. (in thousands) Gross Carrying Amount Accumulated Amortization Net Carrying Value 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 December 31, 2020 CDI 57,400 (19,829) $ 37,571 Other 12,500 (4,959) 7,541 Total other intangible assets $ 69,900 $ (24,788) $ 45,112 The estimated amortization expense of other intangible assets for the next five years is as follows: (in thousands) Amortization Expense 2022 $ 8,472 2023 7,429 2024 6,366 2025 5,266 2026 4,195

Other Assets

Other Assets	12 Months Ended
	Dec. 31, 2021
Other Assets [Abstract]
Other Assets	Note 6 - Other Assets Significant balances included in other assets at December 31, 2021 and 2020 are presented below. (in thousands) 2021 2020 Investments in tax credits, CRA partnerships, and other investments $ 426,137 $ 262,855 ROU assets 411,472 380,380 Derivative asset positions 191,708 401,295 Deferred tax asset, net 169,051 130,848 Federal Reserve Bank and FHLB Stock 159,941 157,520 Accrued interest receivable 145,659 177,865 Accounts receivable 81,325 88,286 Mutual funds and mutual funds held in rabbi trusts 43,657 37,650 Prepaid expense 42,874 45,088 MPS receivable (1) 15,320 15,575 Other investments 12,185 1,021 Other real estate 11,818 1,819 Trading account assets, at fair value 8,391 10,880 Miscellaneous other assets 70,660 49,517 Total other assets $ 1,790,198 $ 1,760,599 (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

Deposits	12 Months Ended
	Dec. 31, 2021
Interest-bearing Deposit Liabilities [Abstract]
Deposits	Note 7 - Deposits A summary of interest-bearing deposits at December 31, 2021 and 2020 is presented below. ( in thousands) 2021 2020 Interest-bearing demand deposits (1) $ 9,321,611 $ 8,838,710 Money market accounts (1) 16,364,338 15,277,829 Savings accounts 1,420,647 1,168,672 Time deposits (1) 3,093,027 4,358,100 Brokered deposits 2,835,000 3,570,406 Total interest-bearing deposits $ 33,034,623 $ 33,213,717 (1) Excluding brokered deposits The aggregate amount of time deposits of $250,000 or more was $1.33 billion at December 31, 2021 and $1.80 billion at December 31, 2020. The following table presents contractual maturities of all time deposits, including brokered time deposits, at December 31, 2021. (in thousands) Maturing within one year $ 3,025,020 Between 1 - 2 years 789,274 2 - 3 years 171,042 3 - 4 years 79,903 4 - 5 years 41,967 Thereafter 10,269 Total $ 4,117,475

Long-term Debt

Long-term Debt	12 Months Ended
	Dec. 31, 2021
Debt Disclosure [Abstract]
Long-term Debt	Note 8 - Long-term Debt Long-term debt at December 31, 2021 and 2020 is presented in the following table: (dollars in thousands) 2021 2020 Parent Company: 3.125% senior notes, due November 1, 2022, $300.0 million par value with semi-annual interest payments and principal to be paid at maturity $ 299,479 $ 298,853 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 297,855 297,553 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 2.00% at December 31, 2021 and 2.02% at December 31, 2020) 10,000 10,000 Total long-term debt — Parent Company $ 607,334 $ 606,406 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 $ 398,594 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 197,626 197,349 FRB PPP Lending Facility — 145 Total long-term debt — Synovus Bank 596,895 596,088 Total long-term debt $ 1,204,229 $ 1,202,494 (1) Subsequent to December 31, 2021, 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. See "Part II - Item 8. Financial Statements and Supplementary Data - Note 19 - Subsequent Event" in this Report for more information. 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, 2021 and 2020, 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 2022 $ 300,000 $ — $ 300,000 2023 — 400,000 (1) 400,000 2024 — — — 2025 — — — 2026 — — — Thereafter 310,000 200,000 510,000 Total $ 610,000 $ 600,000 $ 1,210,000 (1) Subsequent to December 31, 2021, 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. See "Part II - Item 8. Financial Statements and Supplementary Data - Note 19 - Subsequent Event" in this Report for more information.

Shareholders' Equity and Other

Shareholders' Equity and Other Comprehensive Income	12 Months Ended
	Dec. 31, 2021
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, 2021, 2020, and 2019. (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, 2018 8,000 — 8,000 143,300 27,434 115,866 FCB acquisition: Issuance of common stock for acquisition — — — 22,043 — 22,043 Common stock reissued — — — — (27,434) 27,434 Warrants exercised and common stock reissued — — — — (260) 260 Issuance of preferred stock — 14,000 14,000 — — — Issuance of common stock for earnout payment — — — 344 — 344 Restricted share unit activity — — — 302 — 302 Stock options exercised — — — 812 — 812 Repurchase of common stock — — — — 19,903 (19,903) 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 Preferred Stock The following table presents a summary of Preferred Stock as of December 31, 2021, 2020, and 2019. 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. (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 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. During 2019, Synovus repurchased $725.0 million, or 19.9 million shares, of common stock through open market transactions under the $725.0 million repurchase program, with $400.0 million authorized during the fourth quarter of 2018 for execution in 2019 and $325.0 million authorized in 2019. 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, 2021, 2020, and 2019. 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, 2018 $ (83,179) $ (12,137) $ 896 $ (94,420) Other comprehensive income (loss) before reclassifications 161,170 (6,350) (378) 154,442 Amounts reclassified from accumulated other comprehensive income (loss) 5,675 — (56) 5,619 Net current period other comprehensive income (loss) 166,845 (6,350) (434) 160,061 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) (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, 2021
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. Management currently believes, based on internal capital analyses and earnings projections, that 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, 2021 and 2020 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) 2021 2020 2021 2020 2021 2020 Synovus Financial Corp. CET1 capital $ 4,388,618 $ 4,034,865 $ 2,079,435 $ 1,879,551 N/A N/A Tier 1 risk-based capital 4,925,763 4,572,010 2,772,581 2,506,068 N/A N/A Total risk-based capital 5,827,196 5,604,230 3,696,774 3,341,425 N/A N/A CET1 capital ratio 9.50 % 9.66 % 4.50 % 4.50 % N/A N/A Tier 1 risk-based capital ratio 10.66 10.95 6.00 6.00 N/A N/A Total risk-based capital ratio 12.61 13.42 8.00 8.00 N/A N/A Leverage ratio 8.72 8.50 4.00 4.00 N/A N/A Synovus Bank CET1 capital $ 4,998,698 $ 4,641,711 $ 2,076,515 $ 1,880,757 $ 2,999,410 $ 2,716,650 Tier 1 risk-based capital 4,998,698 4,641,711 2,768,686 2,507,677 3,691,581 3,343,569 Total risk-based capital 5,587,757 5,361,611 3,691,581 3,343,569 4,614,477 4,176,461 CET1 capital ratio 10.83 % 11.11 % 4.50 % 4.50 % 6.50 % 6.50 % Tier 1 risk-based capital ratio 10.83 11.11 6.00 6.00 8.00 8.00 Total risk-based capital ratio 12.11 12.83 8.00 8.00 10.00 10.00 Leverage ratio 8.86 8.73 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, 2021
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, 2021, 2020, and 2019. 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) 2021 2020 2019 Net income $ 760,467 $ 373,695 $ 563,780 Less: Preferred stock dividends 33,163 33,163 22,881 Net income available to common shareholders $ 727,304 $ 340,532 $ 540,899 Weighted average common shares outstanding 147,041 147,415 154,331 Effect of dilutive outstanding equity-based awards, warrants, and earnout payments 1,454 795 1,727 Weighted average diluted common shares 148,495 148,210 156,058 Net income per common share, basic $ 4.95 $ 2.31 $ 3.50 Net income per common share, diluted $ 4.90 $ 2.30 $ 3.47 For the years ended December 31, 2021, 2020, and 2019, there were 21 thousand, 602 thousand, and 40 thousand, respectively, 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, 2021
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, 2021 and 2020. December 31, 2021 December 31, 2020 (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 $ — $ 10,185 $ — $ 10,185 Collateralized mortgage obligations issued by U.S. Government sponsored enterprises — 671 — 671 — 158 — 158 Other mortgage-backed securities — — — — — 178 — 178 State and municipal securities — 560 — 560 — 176 — 176 Asset-backed securities — 6,963 — 6,963 — 183 — 183 Total trading securities $ — $ 8,391 $ — $ 8,391 $ — $ 10,880 $ — $ 10,880 Investment securities available for sale: U.S. Treasury securities $ 117,838 $ — $ — $ 117,838 $ 20,257 $ — $ — $ 20,257 U.S. Government agency securities — 54,201 — 54,201 — 82,320 — 82,320 Mortgage-backed securities issued by U.S. Government agencies — 779,633 — 779,633 — 1,218,017 — 1,218,017 Mortgage-backed securities issued by U.S. Government sponsored enterprises — 8,012,301 — 8,012,301 — 5,000,046 — 5,000,046 Collateralized mortgage obligations issued by U.S. Government agencies or sponsored enterprises — 939,623 — 939,623 — 1,250,377 — 1,250,377 Commercial mortgage-backed securities issued by U.S. Government agencies or sponsored enterprises — 481,744 — 481,744 — 370,921 — 370,921 Asset-backed securities — 514,188 — 514,188 — — — — Corporate debt securities and other debt securities — 18,801 — 18,801 — 18,479 2,021 20,500 Total investment securities available for sale $ 117,838 $ 10,800,491 $ — $ 10,918,329 $ 20,257 $ 7,940,160 $ 2,021 $ 7,962,438 Mortgage loans held for sale — 108,198 — 108,198 — 216,647 — 216,647 Other investments — — 12,185 12,185 — — 1,021 1,021 Mutual funds and mutual funds held in rabbi trusts 43,657 — — 43,657 37,650 — — 37,650 GGL/SBA loans servicing asset — — 3,233 3,233 — — 3,258 3,258 Derivative assets — 191,708 — 191,708 — 401,295 — 401,295 Liabilities Trading liability for short positions $ — $ 200 $ — $ 200 $ — $ 7,717 $ — $ 7,717 Mutual fund held in rabbi trusts 27,205 — — 27,205 20,752 — — 20,752 Earnout liability — — — — — — 5,677 5,677 Derivative liabilities — 95,067 3,535 98,602 — 155,119 2,048 157,167 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) 2021 2020 2019 Changes in fair value included in net income: Mortgage loans held for sale $ (3,942) $ 3,400 $ 1,675 Mortgage loans held for sale: Fair value 108,198 216,647 115,173 Unpaid principal balance 105,785 210,292 112,218 Fair value less aggregate unpaid principal balance $ 2,413 $ 6,355 $ 2,955 Fair Value Measurements Using Significant Unobservable Inputs (Level 3) During 2021 and 2020, Synovus did not have any transfers in or out of Level 3 in the fair value hierarchy. 2021 (in thousands) Investment Securities Available for Sale Other Investments GGL/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 — — — Settlements — — 1,314 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) 2020 (in thousands) Investment Securities Available for Sale Other Investments GGL/SBA Loans Servicing Asset Earnout Liability Visa Derivative Liability Beginning balance $ 2,105 $ 3,887 $ 3,040 $ (11,016) $ (2,339) Total gains (losses) realized/unrealized: Included in earnings — (2,866) (1,000) (4,908) (890) Unrealized gains (losses) included in other comprehensive income (84) — — — — Additions — — 1,218 — — Settlements — — — 10,247 1,181 Ending balance $ 2,021 $ 1,021 $ 3,258 $ (5,677) $ (2,048) 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, 2020 $ — $ (2,866) $ — $ (4,908) $ (890) 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, 2021 December 31, 2020 (dollars in thousands) Valuation Technique Significant Unobservable Input Level 3 Fair Value Rate/Range Level 3 Fair Value Rate/Range Assets measured at fair value on a recurring basis Investment Securities Available for Sale: Corporate debt and other debt securities trust preferred security Discounted cash flow analysis Discount rate $— N/A $2,021 4.96% 4.06% 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 $12,185 N/A $1,021 N/A GGL/SBA loans servicing asset Discounted cash flow analysis Discount rate $3,233 8.55% 18.50% $3,258 10.79% 18.81% Earnout liability Option pricing methods and Monte Carlo simulation Financial projections of Global One through June 30, 2021 $— N/A $5,677 N/A 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 $3,535 0-1.8 years (3Q 2023) $2,048 0-1.8 years (3Q 2022) Assets Measured at Fair Value on a Non-recurring Basis Certain assets 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 assets measured at fair value on a non-recurring basis as of the dates indicated for which there was a fair value adjustment. December 31, 2021 December 31, 2020 (in thousands) Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Loans (1) $ — $ — $ 19,482 $ 19,482 $ — $ — $ 44,802 $ 44,802 Other real estate — — 270 270 — — 860 860 MPS receivable — — — — — — 15,575 15,575 Other assets held for sale — — 1,256 1,256 — — 2,354 2,354 Years Ended December 31, (in thousands) 2021 2020 Location in Consolidated Statements of Income Loans (1) $ 27,613 $ 21,927 Provision for credit losses Other real estate 120 200 Other operating expense MPS receivable — 2,663 Other operating expense Other assets held for sale 462 2,292 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, 2021 December 31, 2020 Valuation Technique Significant Unobservable Input Range (Weighted Average) (1) Range (Weighted Average) (1) Assets 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%-71% (48%) 0%-10% (7%) 0%-39% (25%) 0%-7% (7%) Loans held for sale Analysis of anticipated market prices for similar assets less estimated selling costs Market price analysis for similar assets N/A N/A Other real estate Third-party appraised value of real estate less estimated selling costs Discount to appraised value 0%-48% (24%) 0%-10% (7%) 0%-23% (12%) 0%-10% (7%) MPS receivable (2) Third-party appraised value of business less estimated selling costs Discount to appraised value N/A N/A Other assets held for sale Third-party appraised value less estimated selling costs or BOV Discount to appraised value 0%-51% (20%) 0%-10% (7%) 0%-66% (45%) 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. (2) See "Part II - Item 8. Financial Statements and Supplementary Data - Note 14 - Commitments and Contingencies" of this Report for more information on this receivable which was classified as a NPA at December 31, 2021 and 2020. Fair Value of Financial Instruments The following table present s the carrying and estimated fair values of financial instruments at December 31, 2021 and 2020. 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, 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 of deferred fees and costs 38,884,361 39,118,275 — — 39,118,275 GGL/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 $ — Securities sold under repurchase agreements 264,133 264,133 264,133 — — Trading liability for short positions 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 December 31, 2020 (in thousands) Carrying Value Fair Value Level 1 Level 2 Level 3 Financial assets Total cash, cash equivalents, and restricted cash $ 4,252,917 $ 4,252,917 $ 4,252,917 $ — $ — Trading securities 10,880 10,880 — 10,880 — Investment securities available for sale 7,962,438 7,962,438 20,257 7,940,160 2,021 Loans held for sale 760,123 760,939 — 216,647 544,292 Other investments 1,021 1,021 — — 1,021 Mutual funds and mutual funds held in rabbi trusts 37,650 37,650 37,650 — — Loans, net of deferred fees and costs 37,647,248 37,605,881 — — 37,605,881 GGL/SBA loans servicing asset 3,258 3,258 — — 3,258 FRB and FHLB stock 157,520 157,520 — 157,520 — Derivative assets 401,295 401,295 — 401,295 — Financial Liabilities Non-interest-bearing deposits $ 13,477,854 $ 13,477,854 $ — $ 13,477,854 $ — Non-time interest-bearing deposits 27,265,521 27,265,521 — 27,265,521 — Time deposits 5,948,196 5,970,146 — 5,970,146 — Total deposits $ 46,691,571 $ 46,713,521 $ — $ 46,713,521 $ — Securities sold under repurchase agreements 227,922 227,922 227,922 — — Trading liability for short positions 7,717 7,717 — 7,717 — Long-term debt 1,202,494 1,266,825 — 1,266,825 — Earnout liability 5,677 5,677 — — 5,677 Mutual fund held in rabbi trusts 20,752 20,752 20,752 — — Derivative liabilities 157,167 157,167 — 155,119 2,048

Derivative Instruments

Derivative Instruments	12 Months Ended
	Dec. 31, 2021
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. 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, 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 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 of $1.2 million, or $930 thousand, after tax, in OCI during the year ended December 31, 2021 and $9.8 million, or $7.3 million, after-tax, in OCI, during the year ended December 31, 2020, related to terminated cash flow hedges, which are being recognized into earnings in conjunction with the effective terms of the original swaps through the second quarter of 2026. Synovus recognized pre-tax income of $12.9 million and $2.8 million, respectively, during the years ended December 31, 2021 and 2020 related to t he amortization o f terminated cash flow hedges. As of December 31, 2021, Synovus expects to reclassify into earnings approximately $27 million in pre-tax income 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 $4 million in pre-tax income related to the amortization of terminated cash flow hedges. As of December 31, 2021, the maximum length of time over which Synovus is hedging its exposure to the variability in future cash flows is through the third quarter of 2026. 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 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 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. 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. The fair value of the derivative contract is determined based on management's estimate of the timing and amount of the Covered Litigation settlement, and the resulting payments due to the counterparty under the terms of the contract. During the years ended December 31, 2021 and 2020, Synovus recorded fair value adjustments of $2.7 million and $890 thousand, respectively, in other non-interest expense. Management believes that the estimate of Synovus' exposure to the Visa indemnification including fees associated with the Visa derivative is adequate based on current information, including Visa's recent announcements and disclosures. However, future developments in the litigation could require changes to Synovus' estimate. 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, 2021 and 2020, collateral totaling $64.5 million and $155.4 million, respectively, was pledged to the derivative counterparties to comply with collateral requirements in the normal course of business. 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. At December 31, 2021 and 2020, Synovus had a variation margin of $94.6 million and $162.7 million, respectively, reducing the derivative liability. The following table reflects the notional amount and fair value of derivative instruments included on the consolidated balance sheets. December 31, 2021 December 31, 2020 Fair Value Fair Value (in thousands) Notional Amount Derivative Assets (1) Derivative Liabilities (2) Notional Amount Derivative Assets (1) Derivative Liabilities (2) Derivatives in cash flow hedging relationships: Interest rate contracts $ 3,600,000 $ 22,004 $ 20,395 $ 3,000,000 $ 80,802 $ — Total derivatives designated as hedging instruments $ 22,004 $ 20,395 $ 80,802 $ — Derivatives not designated: Interest rate contracts (3) $ 9,653,600 $ 167,560 $ 74,514 $ 8,784,141 $ 314,234 $ 153,204 Mortgage derivatives - interest rate lock commitments 99,006 2,105 — 306,138 6,259 — Mortgage derivatives - forward commitments to sell fixed-rate mortgage loans 105,500 — 122 230,500 — 1,611 Other contracts (4) 293,059 — 36 234,884 — 304 Foreign exchange contracts (5) 22,387 39 — 24,125 Visa derivative — — 3,535 — — 2,048 Total derivatives not designated as hedging instruments $ 169,704 $ 78,207 $ 320,493 $ 157,167 (1) Derivative assets are recorded in other assets on the consolidated balance sheets. (2) Derivative liabilities are recorded in other liabilities on the consolidated balance sheets. (3) Includes interest rate contracts for client swaps and offsetting positions, net of variation margin payments. (4) Includes risk participation agreements sold. Additionally, the notional amount of risk participation agreements purchased was $81.2 million and $2.6 million at December 31, 2021 and 2020, respectively. (5) The fair value of foreign exchange contracts was negligible at December 31, 2020 due to the very short duration of these contracts. 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 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, 2021, 2020, and 2019. (in thousands) 2021 2020 2019 Total amounts presented on the consolidated statements of income in interest income on loans $ 31,522 $ 22,215 $ — Gain/loss on cash flow hedging relationships: (1) Interest rate swaps: Realized gains (losses) reclassified from AOCI, pre-tax, to interest income on loans 12,862 2,765 — Pre-tax income recognized on cash flow hedges $ 12,862 $ 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 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, 2021, 2020 and 2019 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 2021 2020 2019 Derivatives not designated as hedging instruments: Interest rate contracts (1) Capital markets income $ 100 $ (777) $ (338) Other contracts (2) Capital markets income 269 (213) (91) Foreign exchange contracts Capital markets income 39 — — Mortgage derivatives - interest rate lock commitments Mortgage banking income (4,154) 4,969 346 Mortgage derivatives - forward commitments to sell fixed-rate mortgage loans Mortgage banking income 1,489 (1,443) 651 Visa derivative Other non-interest expense 2,656 (890) (3,611) Total derivatives not designated as hedging instruments $ 399 $ 1,646 $ (3,043) (1) Gain (loss) represents net fair value adjustments (including credit related adjustments) for client swaps and offsetting positions. Additionally, losses related to termination of client swaps of $2.5 million were recorded in other non-interest expense during 2020. (2) Includes risk participation agreements sold.

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2021
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, 2021, the ACL for unfunded commitments was $41.9 million, compared to a reserve of $47.8 million at December 31, 2020. 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) 2021 2020 Letters of credit (1) $ 183,463 $ 190,562 Commitments to fund commercial and industrial loans 9,069,588 8,200,608 Commitments to fund commercial real estate, construction, and land development loans 3,593,171 3,290,041 Commitments under home equity lines of credit 1,805,869 1,602,831 Unused credit card lines 999,787 1,012,313 Other loan commitments 604,353 472,233 Total letters of credit and unfunded lending commitments $ 16,256,231 $ 14,768,588 Tax credits, CRA partnerships, and other investments: Carrying amount included in other assets $ 426,137 $ 262,855 Amount of future funding commitments 250,733 133,946 Permanent and short-term construction loans and letter of credit commitments (2) 204,391 82,786 Funded portion of permanent and short-term loans and letters of credit (3) 104,315 9,528 (1) Represent the contractual amount net of risk participations purchased of approximately $26 million and $30 million at December 31, 2021 and December 31, 2020, respectively. (2) Represent the contractual amount net of risk participations of $3.0 million and $1.8 million at December 31, 2021 and December 31, 2020, respectively (3) Represent the contractual amount net of risk participations of $3.0 million and $234 thousand at December 31, 2021 December 31, 2020, respectively. Merchant Services In accordance with credit and debit card association rules, Synovus provides merchant processing services for clients. 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, 2021 and 2020, Synovus and the sponsored entities processed and settled $105.14 billion and $78.19 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. As of December 31, 2021, the remaining amount, net of reserves, included in other assets and classified in N PAs, is $15.3 million, co mpared to $15.6 million at December 31, 2020. 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, 2021 are adequate. The actual costs of resolving legal claims may be higher or lower than the amounts accrued. In addition, where Synovus determines that there is a reasonable possibility of a loss in respect of legal matters, Synovus

Share-based Compensation and Ot

Share-based Compensation and Other Employment Benefit Plans	12 Months Ended
	Dec. 31, 2021
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. The Plan permits grants of share-based compensation including stock options, restricted share units, market restricted share units, and performance share units. The grants generally include vesting periods of three years. The restricted share units and the market restricted share units contain a service-based vesting period of three years with most awards vesting pro-rata over three years. Restricted share units are primarily equity-based but can be cash settled as well. When cash settled awards are granted, they are classified as a liability and revalued quarterly. As further discussed below, market restricted share units and performance share units are granted at a defined target level and are compared annually to required market and performance metrics to determine actual units vested and for performance share units, 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, market 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. 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, 2021, Synovus had a total of 5.8 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 2021, 2020, and 2019 is presented in the following table by its classification within total non-interest expense. Years Ended December 31, (in thousands) 2021 2020 2019 Salaries and other personnel expense $ 26,957 $ 17,827 $ 19,618 Merger-related expense — — 4,219 Other operating expense 838 814 650 Total share-based compensation expense included in non-interest expense $ 27,795 $ 18,641 $ 24,487 The total income tax benefit recognized on the consolidated statements of income related to share-based compensation expense was $7.0 million, $4.8 million, and $6.3 million for 2021, 2020, and 2019, respectively. No share-based compensation costs have been capitalized for the years ended December 31, 2021, 2020, and 2019. As of December 31, 2021, total unrecognized compensation cost related to the unvested portion of share-based compensation arrangements involving shares of Synovus stock was $30.3 million. This cost is expected to be recognized over a weighted average remaining period of 1.87 years. Stock Options There were no stock option grants in 2021, 2020, or 2019; however, Synovus assumed 3.2 million outstanding employee and director stock options in the FCB Merger on January 1, 2019. The estimated fair value of the converted stock options was determined using a Hull-White model in a binomial lattice option pricing framework with the following weighted average assumptions: 2019 Stock price (Synovus' closing stock price on December 31, 2018) $ 31.99 Weighted average fair value of converted stock options 11.50 Risk-free interest rate 2.51 % Expected stock price volatility 26.4 % Dividend yield 3.13 % Term to expiration 5.1 years A summary of stock option activity and changes during the years ended December 31, 2021, 2020, and 2019 is presented below. Stock Options 2021 2020 2019 (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 2,401 $ 22.47 3,037 $ 22.74 640 $ 16.93 Assumed in acquisition — — — — 3,230 23.22 Options exercised (923) 22.07 (572) 22.67 (820) 19.91 Options forfeited/expired/canceled — — (64) 33.50 (13) 34.23 Options outstanding at end of year 1,478 $ 22.71 2,401 $ 22.47 3,037 $ 22.74 Options exercisable at end of year 1,478 $ 22.71 2,401 $ 22.47 2,399 $ 19.52 The aggregate intrinsic value for both outstanding and exercisable stock options at December 31, 2021 was $37.2 million with a weighted average remaining contractual life of 2.51 years. The intrinsic value of stock options exercised during the years ended December 31, 2021, 2020, and 2019 was $21.3 million, $5.3 million, and $13.6 million, respectively. Restricted Share Units, Market Restricted Share Units, and Performance Share Units Compensation expense is measured based on the grant date fair value of restricted share units, market 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 market restricted share units granted was estimated on the date of grant using a Monte Carlo simulation model with the following weighted average assumptions: 2021 2020 2019 Risk-free interest rate 2.87 % 1.42 % 2.40 % Expected stock price volatility 56.1 25.4 24.4 Simulation period 2.9 years 3.0 years 3.0 years The stock price expected volatility was based on Synovus' historical volatility for grants in 2021, 2020 and 2019. 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, 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. During the year ended December 31, 2019, Synovus granted market restricted share units and performance share units to senior management. The market restricted share units have a three-year service-based vesting component as well as a total shareholder return multiplier and the performance share units vest upon meeting certain service and performance conditions. The number of market restricted share units that will ultimately vest ranges from 75% to 125% of a defined target based on Synovus' TSR. Adjusted ROAA and adjusted ROATCE performance is evaluated each year over a three-year performance period, with share distribution determined at the end of the three years. The number of performance share units that will ultimately vest ranges from 0% to 150% of defined targets based on Synovus' three-year weighted average adjusted ROAA and adjusted ROATCE. A summary of restricted share units and market/performance share units outstanding and changes during the years ended December 31, 2021, 2020, and 2019 is presented below. Restricted Share Units Market/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, 2018 526 $ 41.18 392 $ 39.62 Granted 573 36.27 305 37.22 Assumed in acquisition 136 31.99 — — Vested (304) 37.04 (152) 30.87 Forfeited (114) 37.04 (50) 39.45 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 The total fair value of restricted share units vested during 2021, 2020, and 2019 was $19.8 million, $13.4 million, and $11.2 million, respectively. The total fair value of market/performance share units vested during 2021, 2020, and 2019 was $2.4 million, $7.9 million, and $5.7 million, respectively. Other Employment Benefit Plans For the years ended December 31, 2021, 2020, and 2019, Synovus provided a 100% matching contribution on the first 5% of eligible employee 401(k) contributions for a total annual contribution of $21.5 million, $21.3 million , and $18.8 million, respectively. For the years ended December 31, 2021, 2020, and 2019, 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 as expense $1.1 million , $1.1 million, and $1.1 million for contributions to these plans in 2021, 2020, and 2019, respectively.

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2021
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, 2021, 2020, and 2019 are presented below: (in thousands) 2021 2020 2019 Current Federal $ 153,911 $ 187,741 $ 112,517 State 29,982 9,421 2,085 Total current income tax expense 183,893 197,162 114,602 Deferred Federal 28,873 (90,777) 46,182 State 16,127 4,585 40,451 Total deferred income tax expense (benefit) 45,000 (86,192) 86,633 Total income tax expense $ 228,893 $ 110,970 $ 201,235 Income tax expense as shown on the consolidated statements of income differed from the federal statutory rate for the years ended December 31, 2021, 2020, and 2019. A reconciliation of the differences is presented below: Years Ended December 31, (dollars in thousands) 2021 2020 2019 Income tax expense at statutory federal income tax rate $ 207,765 $ 101,779 $ 160,653 Increase (decrease) resulting from: State income tax expense, net of federal income tax benefit 38,452 11,168 33,764 Income not subject to tax (10,455) (9,207) (6,564) Low income housing tax credits and other tax benefits, net of amortization (4,858) (2,611) (1,583) FDIC premiums 4,111 4,744 5,802 General business tax credits (3,727) (657) (678) Excess tax benefit from share-based compensation (3,084) 311 (1,337) Executive compensation 1,096 1,501 6,385 Goodwill impairment — 9,424 — Other, net (407) (5,482) 4,793 Total income tax expense $ 228,893 $ 110,970 $ 201,235 Effective tax rate 23.1 % 22.9 % 26.3 % The components of the Company's deferred tax assets and liabilities at December 31, 2021 and 2020 are presented below: (in thousands) 2021 2020 Deferred tax assets Allowance for loan losses $ 112,180 $ 165,691 Lease liability 102,412 98,340 Employee benefits and deferred compensation 35,782 27,917 Net operating loss carryforwards 23,897 29,684 Net unrealized losses on investment securities available for sale and cash flow hedges 19,261 — Deferred revenue 18,487 24,751 Tax credit carryforwards 15,870 8,605 Fair value of investment securities and loans 6,439 10,093 Non-performing loan interest 2,621 12,472 Other 7,100 9,819 Total gross deferred tax assets 344,049 387,372 Less valuation allowance (19,003) (19,191) Total deferred tax assets 325,046 368,181 Deferred tax liabilities Right-of-use asset (98,773) (98,681) Excess tax over financial statement depreciation (27,355) (40,452) Purchase accounting intangibles (14,820) (14,458) Other properties held for sale (5,345) (3,025) Prepaid expense (4,631) (5,955) Net unrealized gains on investment securities available for sale and cash flow hedges — (64,344) Other (5,071) (10,418) Total gross deferred tax liabilities (155,995) (237,333) Net deferred tax assets $ 169,051 $ 130,848 Synovus believes the realization of net deferred tax assets (after valuation allowance) at December 31, 2021 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 $23.9 million of federal and state NOLs, which have carryforward periods ending in tax years 2023 through 2034, will not be realized before their carryforward period lapses and the Company has accordingly established a valuation allowance in the amount of $19.0 million at December 31, 2021 and $19.2 million at December 31, 2020. State tax credit deferred tax assets at December 31, 2021 total $15.9 million and have expiration dates through the tax year 2031. State NOLs and tax credit carryforwards as of December 31, 2021 are summarized in the following table. Tax Carryforwards As of December 31, 2021 (in thousands) Expiration Dates Deferred Valuation Allowance Net Deferred Tax Asset Balance Net operating losses - federal 2027-2033 $ 19,592 $ (15,851) $ 3,741 Net operating losses - states 2023-2034 4,305 (3,152) 1,153 Other credits - states 2022-2031 15,870 — 15,870 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 2018 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) 2021 2020 2019 Balance at January 1, $ 20,250 $ 20,994 $ 18,586 Additions based on income tax positions related to current year 3,754 461 550 Additions for income tax positions of prior years (1) 1,379 147 — Additions from acquisition — — 3,464 Reductions for income tax positions of prior years (200) (327) (1,589) Statute of limitation expirations (79) (820) (17) Settlements — (205) — Balance at December 31, $ 25,104 $ 20,250 $ 20,994 (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 $3.3 million, $2.7 million, and $3.3 million as of December 31, 2021, 2020 and 2019, respectively. Unrecognized income tax benefits as of December 31, 2021, 2020 and 2019 that, if recognized, would affect the effective income tax rate totaled $23.5 million, $19.1 million and $20.4 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 $2.3 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, 2021
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. Prior to the fourth quarter of 2019, Synovus identified its overall banking operations as its only reportable segment. During the fourth quarter of 2019, Synovus announced changes in its organizational structure and segmented its business into three major reportable business segments: Community Banking, Wholesale 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, as well as PPP 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 Community Banking business segment serves clients using a relationship-based approach through its branch, ATM, commercial, and private wealth network in addition to mobile, Internet, and telephone banking. This segment primarily provides individual, small business, and corporate clients with an array of comprehensive banking products and services including commercial, home equity, and other consumer loans, credit and debit cards, and deposit accounts. The Wholesale Banking business segment serves primarily larger corporate clients by providing commercial lending and deposit services through specialty teams including middle market, CRE, senior housing, national accounts, premium finance, structured lending, healthcare, asset-based lending, and community investment capital. 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, 2021, 2020, and 2019 and as of December 31, 2021 and 2020. The fourth quarter of 2019 was the first financial period in which the new segment reporting became effective; thus, to provide comparable prior year information, Synovus has included proforma business segment financial information for the full year 2019 utilizing various allocation methodologies based on balance sheet and income statement items assigned to each business segment. 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. During the year ended December 31, 2021, Treasury and Corporate Other's net interest income benefited from the recognition of $79.2 million of PPP fees, an increase of $33.2 million from $46.0 million for the year ended December 31, 2020. 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 longer term policy actions designed to keep interest rates low. Year Ended December 31, 2021 (in thousands) Community Banking Wholesale Banking Financial Management Services Treasury and Corporate Other Synovus Consolidated Net interest income $ 808,700 $ 557,943 $ 79,173 $ 87,131 $ 1,532,947 Non-interest revenue 128,026 34,590 211,002 76,448 450,066 Non-interest expense 290,817 90,074 184,257 534,756 1,099,904 Pre-provision net revenue $ 645,909 $ 502,459 $ 105,918 $ (371,177) $ 883,109 Year Ended December 31, 2020 (in thousands) Community Banking Wholesale Banking Financial Management Services Treasury and Corporate Other Synovus Consolidated Net interest income $ 854,021 $ 548,152 $ 79,362 $ 31,213 $ 1,512,748 Non-interest revenue 111,256 26,379 224,620 144,258 506,513 Non-interest expense 297,071 85,250 232,222 565,031 1,179,574 Pre-provision net revenue $ 668,206 $ 489,281 $ 71,760 $ (389,560) $ 839,687 Year Ended December 31, 2019 (Proforma) (in thousands) Community Banking Wholesale Banking Financial Management Services Treasury and Corporate Other Synovus Consolidated Net interest income $ 825,219 $ 518,033 $ 112,431 $ 140,120 $ 1,595,803 Non-interest revenue 136,657 28,948 154,166 36,129 355,900 Non-interest expense 302,327 71,393 152,115 573,133 1,098,968 Pre-provision net revenue $ 659,549 $ 475,588 $ 114,482 $ (396,884) $ 852,735 December 31, 2021 (dollars in thousands) Community Banking Wholesale Banking Financial Management Services Treasury and Corporate Other Synovus Consolidated Loans, net of deferred fees and costs $ 10,791,343 $ 21,496,050 $ 4,994,494 $ 2,030,071 $ 39,311,958 Deposits $ 32,226,477 $ 12,370,554 $ 826,639 $ 4,003,606 $ 49,427,276 Full-time equivalent employees 2,139 284 794 1,670 4,887 December 31, 2020 (dollars in thousands) Community Banking Wholesale Banking Financial Management Services Treasury and Corporate Other Synovus Consolidated Loans, net of deferred fees and costs $ 11,171,055 $ 18,810,729 $ 5,370,748 $ 2,900,452 $ 38,252,984 Deposits $ 29,141,242 $ 11,958,105 $ 739,200 $ 4,853,024 $ 46,691,571 Full-time equivalent employees 2,296 285 835 1,718 5,134

Condensed Financial Information

Condensed Financial Information Of Synovus Financial Corp. (Parent Company Only)	12 Months Ended
	Dec. 31, 2021
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) 2021 2020 Assets Cash due from bank subsidiary $ 389,071 $ 439,352 Funds due from other depository institutions 9,277 9,277 Total cash, cash equivalents, and restricted cash 398,348 448,629 Investment in consolidated bank subsidiary, at equity 5,381,311 5,239,849 Investment in consolidated nonbank subsidiaries, at equity 69,712 46,271 Note receivable from bank subsidiary 100,000 100,000 Other assets 25,538 16,975 Total assets $ 5,974,909 $ 5,851,724 Liabilities and Shareholders' Equity Liabilities: Long-term debt $ 607,334 $ 606,406 Other liabilities 70,775 83,984 Total liabilities 678,109 690,390 Shareholders’ equity: Preferred stock 537,145 537,145 Common stock 169,384 168,133 Additional paid-in capital 3,894,109 3,851,208 Treasury stock (931,497) (731,806) Accumulated other comprehensive income (loss), net (82,321) 158,635 Retained earnings 1,709,980 1,178,019 Total shareholders’ equity 5,296,800 5,161,334 Total liabilities and shareholders’ equity $ 5,974,909 $ 5,851,724 Condensed Statements of Income Years Ended December 31, (in thousands) 2021 2020 2019 Income Cash dividends received from subsidiaries $ 420,000 $ 547,500 $ 400,000 Interest income 777 3,341 5,920 Other income (loss) 1,070 4,966 11,590 Total income 421,847 555,807 417,510 Expense Interest expense 27,616 42,911 41,328 Other expense 10,300 10,584 13,528 Total expense 37,916 53,495 54,856 Income before income taxes and equity in undistributed income of subsidiaries 383,931 502,312 362,654 Allocated income tax benefit (7,834) (12,202) (9,753) Income before equity in undistributed income of subsidiaries 391,765 514,514 372,407 Equity in undistributed income (loss) of subsidiaries 368,702 (140,819) 191,373 Net income 760,467 373,695 563,780 Dividends on preferred stock 33,163 33,163 22,881 Net income available to common shareholders $ 727,304 $ 340,532 $ 540,899 Condensed Statements of Comprehensive Income Years Ended December 31, 2021 2020 2019 (in thousands) Before-tax Amount Income Tax Net of Tax Amount Before-tax Amount Income Tax Net of Tax Amount Before-tax Amount Income Tax Net of Tax Amount Net income $ 989,360 $ (228,893) $ 760,467 $ 484,665 $ (110,970) $ 373,695 $ 765,015 $ (201,235) $ 563,780 Reclassification adjustment for realized (gains) losses included in net income on investment securities available for sale — — — — — — (22) 6 (16) Other comprehensive gain (loss) of bank subsidiary (324,561) 83,605 (240,956) 125,505 (32,511) 92,994 216,032 (55,955) 160,077 Other comprehensive income (loss) $ (324,561) $ 83,605 $ (240,956) $ 125,505 $ (32,511) $ 92,994 $ 216,010 $ (55,949) $ 160,061 Comprehensive income $ 519,511 $ 466,689 $ 723,841 Condensed Statements of Cash Flows Years Ended December 31, (in thousands) 2021 2020 2019 Operating Activities Net income $ 760,467 $ 373,695 $ 563,780 Adjustments to reconcile net income to net cash provided by operating activities: Equity in undistributed (income) loss of subsidiaries (368,702) 140,819 (191,373) Deferred income tax expense (benefit) (7,296) 3,962 1,775 Net increase (decrease) in other liabilities (2,082) 11,243 43,617 Net decrease in other assets 5,280 17,441 3,367 Other, net 928 (5,132) 1,037 Net cash provided by operating activities 388,595 542,028 422,203 Investing Activities Proceeds from sales of investment securities available for sale — — 97,389 Advance of long-term note receivable due from bank subsidiary — — (100,000) Return of investment non-bank subsidiary — — 790 Proceeds from sales of equity securities — 23,141 — Increase in other investments (10,000) — — Net cash received in business combination, net of cash paid — — 4,813 Net cash provided by investing activities (10,000) 23,141 2,992 Financing Activities Dividends paid to common and preferred shareholders (227,840) (223,130) (185,664) Repurchase of common stock (199,932) (16,246) (725,398) Redemption of long-term debt — (250,000) — Proceeds from issuance of long-term debt, net — — 297,174 Proceeds from issuance of preferred stock, net — — 342,005 Other (1,104) (1,552) (1,947) Net cash used in financing activities (428,876) (490,928) (273,830) Increase (decrease) in cash, cash equivalents, and restricted cash (50,281) 74,241 151,365 Cash, cash equivalents, and restricted cash at beginning of year 448,629 374,388 223,023 Cash, cash equivalents, and restricted cash at end of year $ 398,348 $ 448,629 $ 374,388 See accompanying notes to the audited consolidated financial statements. For the years ended December 31, 2021, 2020, and 2019, the Parent Company paid income taxes of $203.2 million , $119.1 million, and $101.6 million, respectively. For the years ended December 31, 2021, 2020, and 2019, the Parent Comp any paid interest of $27.3 million, $42.0 million, and $33.1 million, respectively.

Subsequent Event

Subsequent Event	12 Months Ended
	Dec. 31, 2021
Subsequent Events [Abstract]
Subsequent Event	Note 19 - Subsequent EventSubsequent to December 31, 2021, Synovus Bank provided irrevocable notice to its holders of its intent to redeem the 2.289% Fixed-to-Floating Senior Bank Notes of $400 million par value that were subject to redemption. The Notes were redeemed on February 10, 2022 with a net payment of $405.3 million that included $400.0 million in principal, $4.6 million in interest, and $675 thousand of written off debt issuance costs.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2021
Accounting Policies [Abstract]
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 significant 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.
Immaterial Correction of Prior Period Financial Statements	During the third quarter of 2021, the Company made corrections to proceeds and purchases of investment securities available for sale by adjusting for the impact of timing differences associated with unsettled trades that crossed certain reporting periods. The Company concluded that the corrections were not material to any prior or current periods from a combined qualitative and quantitative perspective.
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
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.
Short-term Investment	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 $65.1 million at December 31, 2021 and $158.7 million at December 31, 2020, 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 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. Accrued interest on available for sale debt securities is excluded from the ACL determination and is recognized within other assets on the consolidated balance sheets. Available for sale debt securities are placed on non-accrual status when we no longer expect to receive all contractual amounts due, which is generally at 90 days past due. Accrued interest receivable is reversed against interest income when a security is placed on non-accrual status. Accordingly, we do not recognize an allowance for credit loss against accrued interest receivable. 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 Investments 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 periods of reduction 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 Loan Losses	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. Loans formerly accounted for as purchased credit-impaired in accordance with ASC 310-30 were automatically transitioned to PCD classification. The Company did not maintain ASC 310-30 pools. PCD loans were integrated into existing pool structures based upon the nature of the loan type and are further segregated based upon the individual loan risk ratings as noted above. 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. For SRR loans, this process begins with a loan rating recommendation from the loan officer responsible for originating the loan. Commercial SRR loans are graded on a 10-point scale and include classifications of special mention, substandard, doubtful, and loss consistent with bank regulatory classifications. The primary determinants of the risk ratings for commercial SRR loans are the reliability of the primary source of repayment and the borrower's expected performance (i.e., the likelihood that the borrower will be able to service its obligations in accordance with the terms). 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. The DRR methodology is used for larger relationships within the C&I loan portfolio as well as certain IPRE loa ns. At December 31, 2021 and 2020, approximat ely 41% a nd 40% of total commercial loans were rated using the DRR methodology, respectively. The DRR includes sixteen PD categories. 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. 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 on a 9-point scale based on credit bureau scores, with a loan grade of 1 assigned as the lowest level of risk and a loan grade of 6 as the highest level of risk. No loans graded higher than 6 at origination are approved for funding. At 90-119 days past due, a loan grade of 7-substandard non-accrual is applied and at 120 days past due, the loan is generally downgraded to grade 9-loss or is 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. FICO scores within the residential real estate portfolio have generally remained stable over the last several years. The Allowance for Loan Losses, for periods before 2020, was established as follows: a. Impaired loans were generally evaluated on a loan by loan basis with specific reserves, if any, recorded as appropriate. Specific reserves were determined based on ASC 310-10-35, which provided for measurement of a loan's impairment based on one of three methods: i) discounted cash flow based upon the loan's contractual effective interest rate, ii) at the loan's observable market price, or iii) at the fair value of the collateral, less costs to sell if the loan was collateral-dependent. b. For loans that were not considered impaired, the allocated allowance for loan losses was calculated consistent with ASC 450, and determined based upon EL factors, which were applied to groupings of specific loan types by loan risk ratings. Allocated EL factors were also adjusted, as necessary, for certain qualitative factors that in management's judgment were necessary to reflect losses incurred in the portfolio.
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
Segment Disclosure	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 three major reportable business segments: Community Banking, Wholesale 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 ROU assets, FRB and FHLB stock, derivative asset positions, net deferred tax assets, accrued interest receivable and investments in tax credits, other investments, and other balances as shown in "Part II - Item 8. Financial Statements and Supplementary Data - Note 6 - Other Assets" of this Report. 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 $143.7 million and $142.5 million at December 31, 2021 and 2020, respectively) in an amount equal to the greater of 6% of its capital and surplus or 0.6%
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 in accordance with ASC Topic 815, Derivatives and Hedging . 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 remaining cumulative adjustments to the hedged item and accumulated amounts in OCI are accounted for in the same manner as other components of the carrying amount of the asset or liability. If the hedged item is derecognized, the accumulated amounts in OCI are immediately reclassified to net income. 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 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 other non-interest revenue 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. 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 other non-interest revenue. These instruments, and their offsetting positions, are recorded in other assets and other liabilities on the consolidated balance sheets.
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 (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. Other Fees (included in other non-interest revenue on the consolidated statements of income) : Other fees within the scope of ASC Topic 606 primarily consist of revenue generated from safe deposit box rental fees and lockbox services. Fees are recognized over time, on a monthly basis, as Synovus' performance obligation for services is satisfied. Payment is received upfront for safe deposit box rentals and in the following month for lockbox services.
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. It also includes increases and decreases in the amount of taxes payable for 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 accrues tax liabilities for uncertain income tax positions based on current assumptions regarding the expected outcome by weighing the facts and circumstances available at the reporting date. If related tax benefits of a transaction are not more likely than not of being sustained upon examination, Synovus will accrue a tax liability or reduce a deferred tax asset for the expected tax impact associated with the transaction. Events and circumstances may alter the estimates and assumptions used
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. 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. Share-based compensation costs associated with grants made to non-employee directors of Synovus are recorded as a component of other operating expense. Vesting for grants of share-based awards granted to Synovus employees accelerates upon retirement for plan participants who have reached age 65 and who also have no less than ten years of service at the date of their election to retire. Share-based compensation expense for service-based awards that contain a graded vesting schedule is recognized net of estimated forfeitures for plan participants on a straight-line basis over the shorter of the requisite service period for the entire award or the period until reaching retirement eligibility. The non-employee director restricted share units become fully vested and transferable upon the earlier to occur of the completion of three years of service or the date the holder reaches the mandatory retirement age, as set forth in the Company's Corporate Governance Guidelines. Thus, share-based compensation expense for non-employee awards is recognized over the shorter of three years or mandatory retirement. Synovus records all tax effects associated with share-based compensation through the income statement.
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	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. The Company has not historically retired shares repurchased, but Synovus' policy is to record retirement of shares in accordance with ASC 505-30-30. 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	Synovus carries various assets and liabilities at fair value based on the fair value accounting guidance under ASC Topic 820, Fair Value Measurements, 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 established under ASC 820-10-35, 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 Account Assets/Liabilities 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 The other investments in which Synovus holds a limited partner interest consist of i) funds that invest in privately held companies and ii) funds previously invested in privately held companies which become publicly traded securities. 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, or 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). Fair Value of Financial Instruments Cash, Cash Equivalents, and Restricted Cash Cash and cash equivalents, interest bearing funds with the Federal Reserve Bank, interest earning deposits with banks, and federal funds sold and securities purchased under resale agreements are repriced on a short-term basis; as such, the carrying value closely approximates fair value. Since these amounts relate to highly liquid assets, these are considered a Level 1 measurement. Loans, net of Deferred Fees and Costs Synovus estimates the fair value of loans based on the present value of the future cash flows using the interest rate that would be charged for a similar loan to a borrower with similar risk, adjusted for a discount based on the estimated time period to complete a sale transaction with a market participant. Loans are considered a Level 3 fair value measurement. Deposits The fair value of deposits with no stated maturity, such as non-interest-bearing demand accounts, interest bearing demand deposits, money market accounts, and savings accounts, is estimated to be equal to the amount payable on demand as of that respective date. The fair value of time deposits is based on the discounted value of contractual cash flows. The discount rate is estimated using the rates currently offered for deposits of similar remaining maturities. Synovus has determined that the appropriate classification for deposits is Level 2 due to the ability to reasonably measure all inputs to valuation based on observable market variables. Short-term and Long-term Debt Short-term and long-term debt is considered a Level 2 valuation, as management relies on market prices for bonds or debt that is similar, but not necessarily identical, to the debt being valued. Short-term debt that matures within ten days is assumed to be at fair value and is considered a Level 1 measurement.
Long-term Debt	Long-term debt balances are presented net of discounts and premiums as well as debt issuance costs that arise from the issuance of long-term debt. 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).
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.
Recently Adopted Accounting Standards and Recently Issued Accounting Standards Not Yet Adopted	Recently Adopted Accounting Standards ASU 2020-08, Codification Improvements to Subtopic 310-20, Receivables – Nonrefundable Fees and Other Costs . The guidance in this ASU pertains to the shortened amortization period for certain purchased callable debt securities held at a premium, which p remium is amortized to the next call date, and clarifies that each reporting period an entity should reevaluate the effective yield if there is no remaining premium or no further call dates remaining. The amendments in this ASU are effective for fiscal years beginning after December 15, 2020. Synovus adopted ASU 2020-08 effective January 1, 2021 with no material impact to the consolidated financial statements. ASU 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes . In December 2019, the FASB issued ASU 2019-12 to simplify and reduce complexities when accounting for income taxes by removing certain exceptions. Among the provisions of this guidance is the requirement that an entity reflect the effect of an enacted change in tax laws or rates in the annual effective tax rate computation in the interim period that includes the enactment date. ASU 2019-12 is effective for public entities for fiscal years beginning after December 15, 2020. Synovus adopted ASU 2019-12 effective January 1, 2021 with no material impact to the consolidated financial statements unless there are changes in tax law that require recognition as set forth in this guidance. ASU 2021-06, Presentation of Financial Statements (Topic 205), Financial Services - Depository and Lending (Topic 942), and Financial Services-Investment Companies (Topic 946). In August 2021, the FASB issued ASU 2021-06 which amends SEC paragraphs in the codif ication pursuant to SEC Final Rule Rele ases No. 33-10786 and No. 33-10835. These rule releases amend disclosure requirements applicable to acquisitions and dispositions of businesses and also amend statistical disclosures that banks and bank holding companies provide to investors. ASU 2021-06 eliminates disclosures that overlap with SEC rules or US GAAP. The amendments in this ASU were effective upon its addition to the FASB codification with no material effect to the consolidated financial statements Recently Issued Accounting Standards Not Yet Adopted 2021-08, Business Combinations (Topic 805): Accounting for Contract Assets and Contract Liabilities from Contracts with Customers . In October 2021, the FASB issued ASU 2021-08 to address diversity in practice related to the accounting for revenue contracts with customers acquired in a business combination. Generally, this new guidance will result in the acquirer recognizing contract assets and contract liabilities at the same amounts recorded by the acquiree (in accordance with ASC 606). The guidance in ASU 2021-08 should be applied prospectively to acquisitions occurring on or after the effective date. For Synovus, the amendments in this Update are effective for fiscal years beginning after December 15, 2022, including interim periods within those fiscal years. Early adoption of the amendments is permitted, including adoption in an interim period . 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. The expedients and exceptions provided by ASU 2021-01 will not be available after December 31, 2022, other than for existing hedging relationships entered into by December 31, 2022. The ASU may be applied as of the beginning of an interim period that includes or is subsequent to March 12, 2020, until the sunset date of December 31, 2022. Synovus adopted ASU 2020-04 Reference Rate Reform: Facilitation of the Effects of Reference Rate Reform on Financial Reporting on October 1, 2020. While Synovus has not yet finalized the election of optional expedients for ASU 2021-01, we do not currently expect there to be a material financial impact to the Company regardless of which optional expedients the Company selects to replace LIBOR.

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2021
Accounting Policies [Abstract]
Schedule of Error Corrections and Prior Period Adjustments	A summary of corrections is presented below. Corrected Consolidated Statement of Cash Flows (unaudited) Year Ended December 31, 2020 (in thousands) As Reported Adjustment As Corrected Investing Activities Proceeds from sales of investment securities available for sale $ 4,054,670 $ (1,404,984) $ 2,649,686 Purchases of investment securities available for sale (7,441,163) 1,404,984 (6,036,179) Net cash used in investing activities $ 2,352,973 $ — $ 2,352,973
Accounting Standards Update and Change in Accounting Principle	The following table illustrates the impact of ASC 326 adoption: As of January 1, 2020 in thousands Pre-ASC 326 Adoption Impact of ASC 326 Adoption As Reported under ASC 326 Assets Allowance for loan losses: Commercial and industrial $ 145,782 $ (2,310) $ 143,472 Commercial real estate 67,430 (651) 66,779 Consumer 68,190 85,955 154,145 Total allowance for loan losses $ 281,402 $ 82,994 $ 364,396 Liabilities Reserve for unfunded commitments $ 1,375 $ 27,440 $ 28,815 Allowance for credit losses $ 282,777 $ 110,434 $ 393,211 The following table illustrates the distribution of the ASC 326 adoption impact to loans and equity: As of January 1, 2020 in thousands Pre-ASC 326 Adoption Impact of ASC 326 Adoption As Reported under ASC 326 Loans, net $ 36,881,048 $ (20,767) $ 36,860,281 Retained earnings 1,068,327 (35,721) 1,032,606

Investment Securities Availab_2

Investment Securities Available for Sale (Tables)	12 Months Ended
	Dec. 31, 2021
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, 2021 and 2020 are summarized below. 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 December 31, 2020 (in thousands) Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value U.S. Treasury securities $ 20,257 $ — $ — $ 20,257 U.S. Government agency securities 79,638 2,682 — 82,320 Mortgage-backed securities issued by U.S. Government agencies 1,216,012 7,930 (5,925) 1,218,017 Mortgage-backed securities issued by U.S. Government sponsored enterprises 4,865,858 134,188 — 5,000,046 Collateralized mortgage obligations issued by U.S. Government agencies or sponsored enterprises 1,245,644 15,309 (10,576) 1,250,377 Commercial mortgage-backed securities issued by U.S. Government agencies or sponsored enterprises 354,244 16,677 — 370,921 Corporate debt securities and other debt securities 20,211 457 (168) 20,500 Total investment securities available for sale $ 7,801,864 $ 177,243 $ (16,669) $ 7,962,438
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, 2021 and December 31, 2020 are presented below. 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) December 31, 2020 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 Mortgage-backed securities issued by U.S. Government agencies $ 566,896 $ (5,925) $ — $ — $ 566,896 $ (5,925) Collateralized mortgage obligations issued by U.S. Government agencies or sponsored enterprises 803,429 (10,576) — — 803,429 (10,576) Corporate debt securities and other debt securities 9,337 (168) — — 9,337 (168) Total $ 1,379,662 $ (16,669) $ — $ — $ 1,379,662 $ (16,669)
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, 2021 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, 2021 (in thousands) Within One Year 1 to 5 5 to 10 More Than Total Amortized Cost U.S. Treasury securities $ 20,600 $ — $ 99,865 $ — $ 120,465 U.S. Government agency securities 756 321 52,137 — 53,214 Mortgage-backed securities issued by U.S. Government agencies — 842 131 789,356 790,329 Mortgage-backed securities issued by U.S. Government sponsored enterprises 28 — 80,539 7,983,323 8,063,890 Collateralized mortgage obligations issued by U.S. Government agencies or sponsored enterprises — — 146 951,545 951,691 Commercial mortgage-backed securities issued by U.S. Government agencies or sponsored enterprises — 181,144 211,328 86,948 479,420 Asset-backed securities 514,188 — — — 514,188 Corporate debt securities and other debt securities 9,502 — 8,807 — 18,309 Total amortized cost $ 545,074 $ 182,307 $ 452,953 $ 9,811,172 $ 10,991,506 Fair Value U.S. Treasury securities $ 20,600 $ — $ 97,238 $ — $ 117,838 U.S. Government agency securities 760 322 53,119 — 54,201 Mortgage-backed securities issued by U.S. Government agencies — 870 136 778,627 779,633 Mortgage-backed securities issued by U.S. Government sponsored enterprises 28 — 83,271 7,929,002 8,012,301 Collateralized mortgage obligations issued by U.S. Government agencies or sponsored enterprises — — 150 939,473 939,623 Commercial mortgage-backed securities issued by U.S. Government agencies or sponsored enterprises — 182,821 209,311 89,612 481,744 Asset-backed securities 514,188 — — — 514,188 Corporate debt securities and other debt securities 9,730 — 9,071 — 18,801 Total fair value $ 545,306 $ 184,013 $ 452,296 $ 9,736,714 $ 10,918,329
Summary of Sales Transactions in the Investment Securities Available-for-Sale Portfolio	The specific identification method is used to reclassify gains and losses out of other comprehensive income at the time of sale. (in thousands) 2021 2020 2019 Gross realized gains on sales $ 1,191 $ 85,375 $ 10,370 Gross realized losses on sales (1,990) (6,444) (18,029) Investment securities gains (losses), net $ (799) $ 78,931 $ (7,659)

Loans And Allowance For Loan _2

Loans And Allowance For Loan Losses (Tables)	12 Months Ended
	Dec. 31, 2021
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, 2021 and December 31, 2020. 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 $ 11,973,974 $ 13,028 $ 3,686 $ 16,714 $ 37,918 $ 23,869 $ 12,052,475 Owner-occupied 7,493,804 3,627 59 3,686 7,146 4,050 7,508,686 Total commercial and industrial 19,467,778 16,655 3,745 20,400 45,064 27,919 19,561,161 Investment properties 9,861,303 1,285 717 2,002 3,273 2,577 9,869,155 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 10,964,883 3,312 964 4,276 9,726 2,605 10,981,490 Consumer mortgages 5,033,579 6,256 126 6,382 29,078 — 5,069,039 Home equity lines 1,269,610 2,619 — 2,619 9,760 — 1,281,989 Credit cards 296,695 1,584 1,277 2,861 — — 299,556 Other consumer loans 2,090,806 20,369 658 21,027 6,890 — 2,118,723 Total consumer 8,690,690 30,828 2,061 32,889 45,728 — 8,769,307 Loans, net of deferred fees and costs $ 39,123,351 $ 50,795 $ 6,770 $ 57,565 $ 100,518 $ 30,524 $ 39,311,958 December 31, 2020 (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 $ 12,321,514 $ 10,256 $ 996 $ 11,252 $ 55,527 $ 21,859 $ 12,410,152 Owner-occupied 7,087,992 1,913 92 2,005 20,019 — 7,110,016 Total commercial and industrial 19,409,506 12,169 1,088 13,257 75,546 21,859 19,520,168 Investment properties 9,075,843 2,751 154 2,905 24,631 — 9,103,379 1-4 family properties 621,492 3,548 36 3,584 2,383 1,236 628,695 Land and development 591,048 422 — 422 1,899 264 593,633 Total commercial real estate 10,288,383 6,721 190 6,911 28,913 1,500 10,325,707 Consumer mortgages 5,495,415 8,851 485 9,336 8,740 — 5,513,491 Home equity lines 1,521,575 4,006 — 4,006 12,145 — 1,537,726 Credit cards 276,778 2,363 1,877 4,240 — — 281,018 Other consumer loans 1,062,899 9,122 477 9,599 2,376 — 1,074,874 Total consumer 8,356,667 24,342 2,839 27,181 23,261 — 8,407,109 Loans, net of deferred fees and costs $ 38,054,556 $ 43,232 $ 4,117 $ 47,349 $ 127,720 $ 23,359 $ 38,252,984
Loan Portfolio Credit Exposure	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 HELOCs) 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, 2021 as required by CECL. 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 $ 2,397,405 $ 1,332,549 $ 922,396 $ 607,918 $ 433,045 $ 903,995 $ 5,056,168 $ 42,809 $ 11,696,285 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 51,269 33 222,932 Doubtful (2) 469 — 1,601 8,512 — — 48 — 10,630 Total commercial, financial and agricultural 2,416,710 1,398,694 981,693 637,246 451,760 944,049 5,179,481 42,842 12,052,475 Owner-occupied Pass 1,776,086 1,276,797 1,117,825 858,721 708,942 1,150,386 437,724 — 7,326,481 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 Doubtful (2) — — — — — — — — — Loss 271 — — — — — — — 271 Total owner-occupied 1,784,371 1,298,041 1,130,935 912,199 733,220 1,212,196 437,724 — 7,508,686 Total commercial and industrial 4,201,081 2,696,735 2,112,628 1,549,445 1,184,980 2,156,245 5,617,205 42,842 19,561,161 Investment properties Pass 2,823,978 1,463,503 1,905,534 1,019,765 738,036 1,284,013 278,697 — 9,513,526 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 1,352,050 333,710 — 9,869,155 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 1,460,714 434,073 — 10,981,490 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 $ 1,293,106 $ 1,551,510 $ 570,344 $ 216,277 $ 392,422 $ 991,080 $ 296 $ — $ 5,015,035 Substandard (1) 1,031 3,680 5,943 12,387 5,717 25,025 — — 53,783 Loss (3) — — 5 — — 216 — — 221 Total consumer mortgages 1,294,137 1,555,190 576,292 228,664 398,139 1,016,321 296 — 5,069,039 Home equity lines Pass — — — — — — 1,199,635 67,139 1,266,774 Substandard (1) — — — — — — 9,058 5,359 14,417 Doubtful (2) — — — — — — — — — Loss (3) — — — — — — 658 140 798 Total home equity lines — — — — — — 1,209,351 72,638 1,281,989 Credit cards Pass — — — — — — 298,287 — 298,287 Substandard (1) — — — — — — 521 — 521 Loss (4) — — — — — — 748 — 748 Total credit cards — — — — — — 299,556 — 299,556 Other consumer loans — Pass 654,818 709,077 127,131 50,007 86,175 97,780 385,308 — 2,110,296 Substandard (1) 668 1,550 2,064 1,308 1,892 750 175 — 8,407 Loss — — — — — 20 — — 20 Total other consumer loans 655,486 710,627 129,195 51,315 88,067 98,550 385,483 — 2,118,723 Total consumer 1,949,623 2,265,817 705,487 279,979 486,206 1,114,871 1,894,686 72,638 8,769,307 Loans, net of deferred fees and costs $ 9,422,021 $ 6,553,714 $ 4,897,449 $ 3,086,000 $ 2,559,500 $ 4,731,830 $ 7,945,964 $ 115,480 $ 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. December 31, 2020 Term Loans Amortized Cost Basis by Origination Year Revolving Loans (in thousands) 2020 2019 2018 2017 2016 Prior Amortized Cost Basis Converted to Term Loans Total Commercial, financial and agricultural Pass $ 3,819,048 $ 1,333,460 $ 847,283 $ 582,612 $ 551,413 $ 633,871 $ 4,102,751 $ 49,762 $ 11,920,200 Special Mention 63,307 40,618 12,723 22,070 1,665 5,545 60,741 489 207,158 Substandard (1) 28,698 36,618 24,867 36,072 12,808 35,172 84,498 514 259,247 Doubtful (2) — 3,721 19,778 — — — 48 — 23,547 Total commercial, financial and agricultural 3,911,053 1,414,417 904,651 640,754 565,886 674,588 4,248,038 50,765 12,410,152 Owner-occupied Pass 1,321,680 1,275,435 1,131,183 982,056 555,932 1,297,070 349,566 — 6,912,922 Special Mention 6,170 9,995 10,682 14,138 1,582 13,768 — — 56,335 Substandard (1) 2,570 22,793 42,615 26,033 7,316 29,794 — — 131,121 Doubtful (2) — — 9,638 — — — — — 9,638 Total owner-occupied 1,330,420 1,308,223 1,194,118 1,022,227 564,830 1,340,632 349,566 — 7,110,016 Total commercial and industrial 5,241,473 2,722,640 2,098,769 1,662,981 1,130,716 2,015,220 4,597,604 50,765 19,520,168 Investment properties Pass 1,055,440 2,126,667 1,999,345 1,091,880 483,780 1,301,088 229,044 — 8,287,244 Special Mention 1,482 66,160 176,794 136,004 138,362 129,401 55,440 — 703,643 Substandard (1) 1,007 4,770 24,476 19,820 21,875 40,509 35 — 112,492 Total investment properties 1,057,929 2,197,597 2,200,615 1,247,704 644,017 1,470,998 284,519 — 9,103,379 1-4 family properties Pass 197,320 95,145 70,267 88,454 38,729 97,374 27,657 — 614,946 Special Mention 402 — 508 109 786 118 — — 1,923 Substandard (1) 1,527 653 4,312 1,141 554 2,299 1,340 — 11,826 Total 1-4 family properties 199,249 95,798 75,087 89,704 40,069 99,791 28,997 — 628,695 Land and development Pass 84,985 173,302 83,734 92,911 12,249 76,380 53,250 — 576,811 Special Mention 857 1,995 2,866 282 — 1,332 636 — 7,968 Substandard (1) 1,229 425 4,664 915 136 1,485 — — 8,854 Total land and development 87,071 175,722 91,264 94,108 12,385 79,197 53,886 — 593,633 Total commercial real estate 1,344,249 2,469,117 2,366,966 1,431,516 696,471 1,649,986 367,402 — 10,325,707 December 31, 2020 Term Loans Amortized Cost Basis by Origination Year Revolving Loans (in thousands) 2020 2019 2018 2017 2016 Prior Amortized Cost Basis Converted to Term Loans Total Consumer mortgages Pass $ 1,871,512 $ 874,769 $ 425,711 $ 678,255 $ 685,810 $ 965,382 $ 1,040 $ — $ 5,502,479 Substandard (1) 33 961 748 889 866 7,224 — — 10,721 Loss (3) — — — — — 291 — — 291 Total consumer mortgages 1,871,545 875,730 426,459 679,144 686,676 972,897 1,040 — 5,513,491 Home equity lines Pass — — — — — — 1,429,755 90,832 1,520,587 Substandard (1) — — — — — — 9,698 5,996 15,694 Doubtful (2) — — — — — — — 19 19 Loss (3) — — — — — — 1,283 143 1,426 Total home equity lines — — — — — — 1,440,736 96,990 1,537,726 Credit cards Pass — — — — — — 279,142 — 279,142 Substandard (1) — — — — — — 595 — 595 Loss (4) — — — — — — 1,281 — 1,281 Total credit cards — — — — — — 281,018 — 281,018 Other consumer loans — Pass 252,160 190,820 89,187 100,459 80,365 61,040 297,637 — 1,071,668 Substandard (1) 19 762 262 1,195 121 585 227 — 3,171 Loss — — — — — 35 — — 35 Total other consumer loans 252,179 191,582 89,449 101,654 80,486 61,660 297,864 — 1,074,874 Total consumer 2,123,724 1,067,312 515,908 780,798 767,162 1,034,557 2,020,658 96,990 8,407,109 Loan, net of deferred fees and costs $ 8,709,446 $ 6,259,069 $ 4,981,643 $ 3,875,295 $ 2,594,349 $ 4,699,763 $ 6,985,664 $ 147,755 $ 38,252,984 (1) The majority of loans within Substandard risk grade are accruing loans at December 31, 2020. (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	Rollforward of Allowance for Loan Losses The following tables detail the changes in the ALL by loan segment for the years ended December 31, 2021, 2020, and 2019. On January 1, 2020, Synovus adopted ASC 326, which replaced the existing incurred loss methodology with an expected credit loss methodology (referred to as CECL). Under the incurred loss methodology, reserves for credit losses were recognized only when the losses were probable or had been incurred; under CECL, companies are required to recognize the full amount of expected credit losses for the lifetime of the financial assets, based on historical experience, current conditions and reasonable and supportable forecasts. See "Part II - Item 8. Financial Statements and Supplementary Data - Note 1 - Summary of Significant Accounting Policies" of this Report for more information on Synovus' adoption of CECL. For the year ended December 31, 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. For the year ended December 31, 2019, Synovus had no significant transfers to loans held for sale. 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 As of and For The Year Ended December 31, 2019 (in thousands) Commercial & Industrial Commercial Real Estate Consumer Total Allowance for loan losses: Beginning balance $ 133,123 $ 68,796 $ 48,636 $ 250,555 Charge-offs (49,572) (5,540) (24,023) (79,135) Recoveries 7,827 8,618 5,078 21,523 Provision for (reversal of) loan losses 53,665 (4,444) 38,499 87,720 Transfer of unfunded commitment reserve 739 — — 739 Ending balance $ 145,782 $ 67,430 $ 68,190 $ 281,402
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, some of which have not been classified as TDRs, and therefore are not included in the discussion below. The following tables represent, by concession type, the post-modification balance for loans modified or renewed during the years ended December 31, 2021, 2020, and 2019 that were reported as accruing or non-accruing TDRs. TDRs by Concession Type 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 lines 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 (2) 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 lines 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 (3) TDRs by Concession Type (continued) Year Ended December 31, 2019 (in thousands, except contract data) Number of Contracts Below Market Interest Rate Other Concessions (1) Total Commercial, financial, and agricultural 127 $ 9,042 $ 9,873 $ 18,915 Owner-occupied 22 9,017 861 9,878 Total commercial and industrial 149 18,059 10,734 28,793 Investment properties 8 1,548 — 1,548 1-4 family properties 18 2,182 643 2,825 Land and development 8 1,187 30 1,217 Total commercial real estate 34 4,917 673 5,590 Consumer mortgages 18 1,587 1,361 2,948 Home equity lines 70 3,024 2,522 5,546 Other consumer loans 109 1,712 5,270 6,982 Total consumer 197 6,323 9,153 15,476 Loans, net of deferred fees and costs 380 $ 29,299 $ 20,560 $ 49,859 (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, 2021, 2020, and 2019. (2) No charge-offs were recorded during the year ended December 31, 2021 upon restructuring of these loans. (3) No charge-offs were recorded during the year ended December 31, 2020 upon restructuring of these loans.

Premises Equipment and Softwa_2

Premises Equipment and Software (Tables)	12 Months Ended
	Dec. 31, 2021
Property, Plant and Equipment [Abstract]
Schedule of Premises Equipment and Software	Premises, equipment and software at December 31, 2021 and 2020 consist of the following: (in thousands) 2021 2020 Land $ 104,768 $ 113,828 Buildings and improvements 361,593 407,735 Leasehold improvements 55,098 53,174 Furniture, equipment and software 441,091 481,560 Construction in progress 18,918 13,052 Total premises, equipment and software 981,468 1,069,349 Less: Accumulated depreciation and amortization (574,227) (605,390) Net premises, equipment and software $ 407,241 $ 463,959

Goodwill And Other Intangible_2

Goodwill And Other Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Goodwill	Goodwill allocated to each reporting unit at December 31, 2021 and December 31, 2020 is presented as follows: (in thousands) Community Banking Reporting Unit Wholesale Banking Reporting Unit Consumer Mortgage Reporting Unit Wealth Management Reporting Unit Total Balance as of December 31, 2019 $ 256,323 $ 171,636 $ 44,877 $ 24,431 $ 497,267 Goodwill impairment — — (44,877) — (44,877) Balance as of December 31, 2020 $ 256,323 $ 171,636 $ — $ 24,431 $ 452,390 Change in goodwill — — — — — Balance as of December 31, 2021 $ 256,323 $ 171,636 $ — $ 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, 2021 and 2020, 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, 2021, 2020, and 2019 was $9.5 million, $10.6 million, and $11.6 million, respectively, and is included in amortization of intangibles expense within non-interest expense. (in thousands) Gross Carrying Amount Accumulated Amortization Net Carrying Value 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 December 31, 2020 CDI 57,400 (19,829) $ 37,571 Other 12,500 (4,959) 7,541 Total other intangible assets $ 69,900 $ (24,788) $ 45,112
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 2022 $ 8,472 2023 7,429 2024 6,366 2025 5,266 2026 4,195

Other Assets (Tables)

Other Assets (Tables)	12 Months Ended
	Dec. 31, 2021
Other Assets [Abstract]
Schedule of Other Assets	Significant balances included in other assets at December 31, 2021 and 2020 are presented below. (in thousands) 2021 2020 Investments in tax credits, CRA partnerships, and other investments $ 426,137 $ 262,855 ROU assets 411,472 380,380 Derivative asset positions 191,708 401,295 Deferred tax asset, net 169,051 130,848 Federal Reserve Bank and FHLB Stock 159,941 157,520 Accrued interest receivable 145,659 177,865 Accounts receivable 81,325 88,286 Mutual funds and mutual funds held in rabbi trusts 43,657 37,650 Prepaid expense 42,874 45,088 MPS receivable (1) 15,320 15,575 Other investments 12,185 1,021 Other real estate 11,818 1,819 Trading account assets, at fair value 8,391 10,880 Miscellaneous other assets 70,660 49,517 Total other assets $ 1,790,198 $ 1,760,599 (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, 2021
Interest-bearing Deposit Liabilities [Abstract]
Schedule of Interest Bearing Deposits	A summary of interest-bearing deposits at December 31, 2021 and 2020 is presented below. ( in thousands) 2021 2020 Interest-bearing demand deposits (1) $ 9,321,611 $ 8,838,710 Money market accounts (1) 16,364,338 15,277,829 Savings accounts 1,420,647 1,168,672 Time deposits (1) 3,093,027 4,358,100 Brokered deposits 2,835,000 3,570,406 Total interest-bearing deposits $ 33,034,623 $ 33,213,717 (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, 2021. (in thousands) Maturing within one year $ 3,025,020 Between 1 - 2 years 789,274 2 - 3 years 171,042 3 - 4 years 79,903 4 - 5 years 41,967 Thereafter 10,269 Total $ 4,117,475

Long-term Debt (Tables)

Long-term Debt (Tables)	12 Months Ended
	Dec. 31, 2021
Debt Disclosure [Abstract]
Schedule of Long-term Debt Instruments	Long-term debt at December 31, 2021 and 2020 is presented in the following table: (dollars in thousands) 2021 2020 Parent Company: 3.125% senior notes, due November 1, 2022, $300.0 million par value with semi-annual interest payments and principal to be paid at maturity $ 299,479 $ 298,853 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 297,855 297,553 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 2.00% at December 31, 2021 and 2.02% at December 31, 2020) 10,000 10,000 Total long-term debt — Parent Company $ 607,334 $ 606,406 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 $ 398,594 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 197,626 197,349 FRB PPP Lending Facility — 145 Total long-term debt — Synovus Bank 596,895 596,088 Total long-term debt $ 1,204,229 $ 1,202,494 (1) Subsequent to December 31, 2021, 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. See "Part II - Item 8. Financial Statements and Supplementary Data - Note 19 - Subsequent Event" in this Report for more information.
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 2022 $ 300,000 $ — $ 300,000 2023 — 400,000 (1) 400,000 2024 — — — 2025 — — — 2026 — — — Thereafter 310,000 200,000 510,000 Total $ 610,000 $ 600,000 $ 1,210,000 (1) Subsequent to December 31, 2021, 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. See "Part II - Item 8. Financial Statements and Supplementary Data - Note 19 - Subsequent Event" in this Report for more information.

Shareholders' Equity and Othe_2

Shareholders' Equity and Other Comprehensive Income (Tables)	12 Months Ended
	Dec. 31, 2021
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, 2021, 2020, and 2019. (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, 2018 8,000 — 8,000 143,300 27,434 115,866 FCB acquisition: Issuance of common stock for acquisition — — — 22,043 — 22,043 Common stock reissued — — — — (27,434) 27,434 Warrants exercised and common stock reissued — — — — (260) 260 Issuance of preferred stock — 14,000 14,000 — — — Issuance of common stock for earnout payment — — — 344 — 344 Restricted share unit activity — — — 302 — 302 Stock options exercised — — — 812 — 812 Repurchase of common stock — — — — 19,903 (19,903) 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
Schedule of Preferred Stock	The following table presents a summary of Preferred Stock as of December 31, 2021, 2020, and 2019. 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. (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, 2021, 2020, and 2019. 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, 2018 $ (83,179) $ (12,137) $ 896 $ (94,420) Other comprehensive income (loss) before reclassifications 161,170 (6,350) (378) 154,442 Amounts reclassified from accumulated other comprehensive income (loss) 5,675 — (56) 5,619 Net current period other comprehensive income (loss) 166,845 (6,350) (434) 160,061 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) (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, 2021
Regulatory Capital Disclosure [Abstract]
Schedule of Compliance with Regulatory Capital	The following table summarizes regulatory capital information at December 31, 2021 and 2020 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) 2021 2020 2021 2020 2021 2020 Synovus Financial Corp. CET1 capital $ 4,388,618 $ 4,034,865 $ 2,079,435 $ 1,879,551 N/A N/A Tier 1 risk-based capital 4,925,763 4,572,010 2,772,581 2,506,068 N/A N/A Total risk-based capital 5,827,196 5,604,230 3,696,774 3,341,425 N/A N/A CET1 capital ratio 9.50 % 9.66 % 4.50 % 4.50 % N/A N/A Tier 1 risk-based capital ratio 10.66 10.95 6.00 6.00 N/A N/A Total risk-based capital ratio 12.61 13.42 8.00 8.00 N/A N/A Leverage ratio 8.72 8.50 4.00 4.00 N/A N/A Synovus Bank CET1 capital $ 4,998,698 $ 4,641,711 $ 2,076,515 $ 1,880,757 $ 2,999,410 $ 2,716,650 Tier 1 risk-based capital 4,998,698 4,641,711 2,768,686 2,507,677 3,691,581 3,343,569 Total risk-based capital 5,587,757 5,361,611 3,691,581 3,343,569 4,614,477 4,176,461 CET1 capital ratio 10.83 % 11.11 % 4.50 % 4.50 % 6.50 % 6.50 % Tier 1 risk-based capital ratio 10.83 11.11 6.00 6.00 8.00 8.00 Total risk-based capital ratio 12.11 12.83 8.00 8.00 10.00 10.00 Leverage ratio 8.86 8.73 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, 2021
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, 2021, 2020, and 2019. 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) 2021 2020 2019 Net income $ 760,467 $ 373,695 $ 563,780 Less: Preferred stock dividends 33,163 33,163 22,881 Net income available to common shareholders $ 727,304 $ 340,532 $ 540,899 Weighted average common shares outstanding 147,041 147,415 154,331 Effect of dilutive outstanding equity-based awards, warrants, and earnout payments 1,454 795 1,727 Weighted average diluted common shares 148,495 148,210 156,058 Net income per common share, basic $ 4.95 $ 2.31 $ 3.50 Net income per common share, diluted $ 4.90 $ 2.30 $ 3.47

Fair Value Accounting (Tables)

Fair Value Accounting (Tables)	12 Months Ended
	Dec. 31, 2021
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, 2021 and 2020. December 31, 2021 December 31, 2020 (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 $ — $ 10,185 $ — $ 10,185 Collateralized mortgage obligations issued by U.S. Government sponsored enterprises — 671 — 671 — 158 — 158 Other mortgage-backed securities — — — — — 178 — 178 State and municipal securities — 560 — 560 — 176 — 176 Asset-backed securities — 6,963 — 6,963 — 183 — 183 Total trading securities $ — $ 8,391 $ — $ 8,391 $ — $ 10,880 $ — $ 10,880 Investment securities available for sale: U.S. Treasury securities $ 117,838 $ — $ — $ 117,838 $ 20,257 $ — $ — $ 20,257 U.S. Government agency securities — 54,201 — 54,201 — 82,320 — 82,320 Mortgage-backed securities issued by U.S. Government agencies — 779,633 — 779,633 — 1,218,017 — 1,218,017 Mortgage-backed securities issued by U.S. Government sponsored enterprises — 8,012,301 — 8,012,301 — 5,000,046 — 5,000,046 Collateralized mortgage obligations issued by U.S. Government agencies or sponsored enterprises — 939,623 — 939,623 — 1,250,377 — 1,250,377 Commercial mortgage-backed securities issued by U.S. Government agencies or sponsored enterprises — 481,744 — 481,744 — 370,921 — 370,921 Asset-backed securities — 514,188 — 514,188 — — — — Corporate debt securities and other debt securities — 18,801 — 18,801 — 18,479 2,021 20,500 Total investment securities available for sale $ 117,838 $ 10,800,491 $ — $ 10,918,329 $ 20,257 $ 7,940,160 $ 2,021 $ 7,962,438 Mortgage loans held for sale — 108,198 — 108,198 — 216,647 — 216,647 Other investments — — 12,185 12,185 — — 1,021 1,021 Mutual funds and mutual funds held in rabbi trusts 43,657 — — 43,657 37,650 — — 37,650 GGL/SBA loans servicing asset — — 3,233 3,233 — — 3,258 3,258 Derivative assets — 191,708 — 191,708 — 401,295 — 401,295 Liabilities Trading liability for short positions $ — $ 200 $ — $ 200 $ — $ 7,717 $ — $ 7,717 Mutual fund held in rabbi trusts 27,205 — — 27,205 20,752 — — 20,752 Earnout liability — — — — — — 5,677 5,677 Derivative liabilities — 95,067 3,535 98,602 — 155,119 2,048 157,167
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) 2021 2020 2019 Changes in fair value included in net income: Mortgage loans held for sale $ (3,942) $ 3,400 $ 1,675 Mortgage loans held for sale: Fair value 108,198 216,647 115,173 Unpaid principal balance 105,785 210,292 112,218 Fair value less aggregate unpaid principal balance $ 2,413 $ 6,355 $ 2,955
Changes in Level 3 Fair Value Measurements	During 2021 and 2020, Synovus did not have any transfers in or out of Level 3 in the fair value hierarchy. 2021 (in thousands) Investment Securities Available for Sale Other Investments GGL/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 — — — Settlements — — 1,314 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) 2020 (in thousands) Investment Securities Available for Sale Other Investments GGL/SBA Loans Servicing Asset Earnout Liability Visa Derivative Liability Beginning balance $ 2,105 $ 3,887 $ 3,040 $ (11,016) $ (2,339) Total gains (losses) realized/unrealized: Included in earnings — (2,866) (1,000) (4,908) (890) Unrealized gains (losses) included in other comprehensive income (84) — — — — Additions — — 1,218 — — Settlements — — — 10,247 1,181 Ending balance $ 2,021 $ 1,021 $ 3,258 $ (5,677) $ (2,048) 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, 2020 $ — $ (2,866) $ — $ (4,908) $ (890)
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, 2021 December 31, 2020 (dollars in thousands) Valuation Technique Significant Unobservable Input Level 3 Fair Value Rate/Range Level 3 Fair Value Rate/Range Assets measured at fair value on a recurring basis Investment Securities Available for Sale: Corporate debt and other debt securities trust preferred security Discounted cash flow analysis Discount rate $— N/A $2,021 4.96% 4.06% 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 $12,185 N/A $1,021 N/A GGL/SBA loans servicing asset Discounted cash flow analysis Discount rate $3,233 8.55% 18.50% $3,258 10.79% 18.81% Earnout liability Option pricing methods and Monte Carlo simulation Financial projections of Global One through June 30, 2021 $— N/A $5,677 N/A 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 $3,535 0-1.8 years (3Q 2023) $2,048 0-1.8 years (3Q 2022) 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, 2021 December 31, 2020 Valuation Technique Significant Unobservable Input Range (Weighted Average) (1) Range (Weighted Average) (1) Assets 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%-71% (48%) 0%-10% (7%) 0%-39% (25%) 0%-7% (7%) Loans held for sale Analysis of anticipated market prices for similar assets less estimated selling costs Market price analysis for similar assets N/A N/A Other real estate Third-party appraised value of real estate less estimated selling costs Discount to appraised value 0%-48% (24%) 0%-10% (7%) 0%-23% (12%) 0%-10% (7%) MPS receivable (2) Third-party appraised value of business less estimated selling costs Discount to appraised value N/A N/A Other assets held for sale Third-party appraised value less estimated selling costs or BOV Discount to appraised value 0%-51% (20%) 0%-10% (7%) 0%-66% (45%) 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. (2) See "Part II - Item 8. Financial Statements and Supplementary Data - Note 14 - Commitments and Contingencies" of this Report for more information on this receivable which was classified as a NPA at December 31, 2021 and 2020.
Assets and Liabilities Measured at Fair Value on Non-Recurring Basis	The following table presents assets measured at fair value on a non-recurring basis as of the dates indicated for which there was a fair value adjustment. December 31, 2021 December 31, 2020 (in thousands) Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Loans (1) $ — $ — $ 19,482 $ 19,482 $ — $ — $ 44,802 $ 44,802 Other real estate — — 270 270 — — 860 860 MPS receivable — — — — — — 15,575 15,575 Other assets held for sale — — 1,256 1,256 — — 2,354 2,354 Years Ended December 31, (in thousands) 2021 2020 Location in Consolidated Statements of Income Loans (1) $ 27,613 $ 21,927 Provision for credit losses Other real estate 120 200 Other operating expense MPS receivable — 2,663 Other operating expense Other assets held for sale 462 2,292 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, 2021 and 2020. 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, 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 of deferred fees and costs 38,884,361 39,118,275 — — 39,118,275 GGL/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 $ — Securities sold under repurchase agreements 264,133 264,133 264,133 — — Trading liability for short positions 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 December 31, 2020 (in thousands) Carrying Value Fair Value Level 1 Level 2 Level 3 Financial assets Total cash, cash equivalents, and restricted cash $ 4,252,917 $ 4,252,917 $ 4,252,917 $ — $ — Trading securities 10,880 10,880 — 10,880 — Investment securities available for sale 7,962,438 7,962,438 20,257 7,940,160 2,021 Loans held for sale 760,123 760,939 — 216,647 544,292 Other investments 1,021 1,021 — — 1,021 Mutual funds and mutual funds held in rabbi trusts 37,650 37,650 37,650 — — Loans, net of deferred fees and costs 37,647,248 37,605,881 — — 37,605,881 GGL/SBA loans servicing asset 3,258 3,258 — — 3,258 FRB and FHLB stock 157,520 157,520 — 157,520 — Derivative assets 401,295 401,295 — 401,295 — Financial Liabilities Non-interest-bearing deposits $ 13,477,854 $ 13,477,854 $ — $ 13,477,854 $ — Non-time interest-bearing deposits 27,265,521 27,265,521 — 27,265,521 — Time deposits 5,948,196 5,970,146 — 5,970,146 — Total deposits $ 46,691,571 $ 46,713,521 $ — $ 46,713,521 $ — Securities sold under repurchase agreements 227,922 227,922 227,922 — — Trading liability for short positions 7,717 7,717 — 7,717 — Long-term debt 1,202,494 1,266,825 — 1,266,825 — Earnout liability 5,677 5,677 — — 5,677 Mutual fund held in rabbi trusts 20,752 20,752 20,752 — — Derivative liabilities 157,167 157,167 — 155,119 2,048

Derivative Instruments (Tables)

Derivative Instruments (Tables)	12 Months Ended
	Dec. 31, 2021
Summary of Derivative Instruments [Abstract]
Impact of Derivatives on Balance Sheet	The following table reflects the notional amount and fair value of derivative instruments included on the consolidated balance sheets. December 31, 2021 December 31, 2020 Fair Value Fair Value (in thousands) Notional Amount Derivative Assets (1) Derivative Liabilities (2) Notional Amount Derivative Assets (1) Derivative Liabilities (2) Derivatives in cash flow hedging relationships: Interest rate contracts $ 3,600,000 $ 22,004 $ 20,395 $ 3,000,000 $ 80,802 $ — Total derivatives designated as hedging instruments $ 22,004 $ 20,395 $ 80,802 $ — Derivatives not designated: Interest rate contracts (3) $ 9,653,600 $ 167,560 $ 74,514 $ 8,784,141 $ 314,234 $ 153,204 Mortgage derivatives - interest rate lock commitments 99,006 2,105 — 306,138 6,259 — Mortgage derivatives - forward commitments to sell fixed-rate mortgage loans 105,500 — 122 230,500 — 1,611 Other contracts (4) 293,059 — 36 234,884 — 304 Foreign exchange contracts (5) 22,387 39 — 24,125 Visa derivative — — 3,535 — — 2,048 Total derivatives not designated as hedging instruments $ 169,704 $ 78,207 $ 320,493 $ 157,167 (1) Derivative assets are recorded in other assets on the consolidated balance sheets. (2) Derivative liabilities are recorded in other liabilities on the consolidated balance sheets. (3) Includes interest rate contracts for client swaps and offsetting positions, net of variation margin payments. (4) Includes risk participation agreements sold. Additionally, the notional amount of risk participation agreements purchased was $81.2 million and $2.6 million at December 31, 2021 and 2020, respectively. (5) The fair value of foreign exchange contracts was negligible at December 31, 2020 due to the very short duration of these contracts.
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, 2021, 2020, and 2019. (in thousands) 2021 2020 2019 Total amounts presented on the consolidated statements of income in interest income on loans $ 31,522 $ 22,215 $ — Gain/loss on cash flow hedging relationships: (1) Interest rate swaps: Realized gains (losses) reclassified from AOCI, pre-tax, to interest income on loans 12,862 2,765 — Pre-tax income recognized on cash flow hedges $ 12,862 $ 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.
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, 2021, 2020 and 2019 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 2021 2020 2019 Derivatives not designated as hedging instruments: Interest rate contracts (1) Capital markets income $ 100 $ (777) $ (338) Other contracts (2) Capital markets income 269 (213) (91) Foreign exchange contracts Capital markets income 39 — — Mortgage derivatives - interest rate lock commitments Mortgage banking income (4,154) 4,969 346 Mortgage derivatives - forward commitments to sell fixed-rate mortgage loans Mortgage banking income 1,489 (1,443) 651 Visa derivative Other non-interest expense 2,656 (890) (3,611) Total derivatives not designated as hedging instruments $ 399 $ 1,646 $ (3,043) (1) Gain (loss) represents net fair value adjustments (including credit related adjustments) for client swaps and offsetting positions. Additionally, losses related to termination of client swaps of $2.5 million were recorded in other non-interest expense during 2020.

Commitments and Contingencies (

Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2021
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) 2021 2020 Letters of credit (1) $ 183,463 $ 190,562 Commitments to fund commercial and industrial loans 9,069,588 8,200,608 Commitments to fund commercial real estate, construction, and land development loans 3,593,171 3,290,041 Commitments under home equity lines of credit 1,805,869 1,602,831 Unused credit card lines 999,787 1,012,313 Other loan commitments 604,353 472,233 Total letters of credit and unfunded lending commitments $ 16,256,231 $ 14,768,588 Tax credits, CRA partnerships, and other investments: Carrying amount included in other assets $ 426,137 $ 262,855 Amount of future funding commitments 250,733 133,946 Permanent and short-term construction loans and letter of credit commitments (2) 204,391 82,786 Funded portion of permanent and short-term loans and letters of credit (3) 104,315 9,528 (1) Represent the contractual amount net of risk participations purchased of approximately $26 million and $30 million at December 31, 2021 and December 31, 2020, respectively. (2) Represent the contractual amount net of risk participations of $3.0 million and $1.8 million at December 31, 2021 and December 31, 2020, respectively (3) Represent the contractual amount net of risk participations of $3.0 million and $234 thousand at December 31, 2021 December 31, 2020, respectively.

Share-based Compensation and _2

Share-based Compensation and Other Employment Benefit Plans (Tables)	12 Months Ended
	Dec. 31, 2021
Share-based Payment Arrangement [Abstract]
Share-based Compensation, Allocation of Recognized Period Costs	Total share-based compensation expense recognized for 2021, 2020, and 2019 is presented in the following table by its classification within total non-interest expense. Years Ended December 31, (in thousands) 2021 2020 2019 Salaries and other personnel expense $ 26,957 $ 17,827 $ 19,618 Merger-related expense — — 4,219 Other operating expense 838 814 650 Total share-based compensation expense included in non-interest expense $ 27,795 $ 18,641 $ 24,487
Schedule of Measuring Compensation Expense	The estimated fair value of the converted stock options was determined using a Hull-White model in a binomial lattice option pricing framework with the following weighted average assumptions: 2019 Stock price (Synovus' closing stock price on December 31, 2018) $ 31.99 Weighted average fair value of converted stock options 11.50 Risk-free interest rate 2.51 % Expected stock price volatility 26.4 % Dividend yield 3.13 % Term to expiration 5.1 years 2021 2020 2019 Risk-free interest rate 2.87 % 1.42 % 2.40 % Expected stock price volatility 56.1 25.4 24.4 Simulation period 2.9 years 3.0 years 3.0 years
Schedule of Stock Options Activity	A summary of stock option activity and changes during the years ended December 31, 2021, 2020, and 2019 is presented below. Stock Options 2021 2020 2019 (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 2,401 $ 22.47 3,037 $ 22.74 640 $ 16.93 Assumed in acquisition — — — — 3,230 23.22 Options exercised (923) 22.07 (572) 22.67 (820) 19.91 Options forfeited/expired/canceled — — (64) 33.50 (13) 34.23 Options outstanding at end of year 1,478 $ 22.71 2,401 $ 22.47 3,037 $ 22.74 Options exercisable at end of year 1,478 $ 22.71 2,401 $ 22.47 2,399 $ 19.52
Schedule of Restricted Stock Units Activity	A summary of restricted share units and market/performance share units outstanding and changes during the years ended December 31, 2021, 2020, and 2019 is presented below. Restricted Share Units Market/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, 2018 526 $ 41.18 392 $ 39.62 Granted 573 36.27 305 37.22 Assumed in acquisition 136 31.99 — — Vested (304) 37.04 (152) 30.87 Forfeited (114) 37.04 (50) 39.45 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

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2021
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, 2021, 2020, and 2019 are presented below: (in thousands) 2021 2020 2019 Current Federal $ 153,911 $ 187,741 $ 112,517 State 29,982 9,421 2,085 Total current income tax expense 183,893 197,162 114,602 Deferred Federal 28,873 (90,777) 46,182 State 16,127 4,585 40,451 Total deferred income tax expense (benefit) 45,000 (86,192) 86,633 Total income tax expense $ 228,893 $ 110,970 $ 201,235
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, 2021, 2020, and 2019. A reconciliation of the differences is presented below: Years Ended December 31, (dollars in thousands) 2021 2020 2019 Income tax expense at statutory federal income tax rate $ 207,765 $ 101,779 $ 160,653 Increase (decrease) resulting from: State income tax expense, net of federal income tax benefit 38,452 11,168 33,764 Income not subject to tax (10,455) (9,207) (6,564) Low income housing tax credits and other tax benefits, net of amortization (4,858) (2,611) (1,583) FDIC premiums 4,111 4,744 5,802 General business tax credits (3,727) (657) (678) Excess tax benefit from share-based compensation (3,084) 311 (1,337) Executive compensation 1,096 1,501 6,385 Goodwill impairment — 9,424 — Other, net (407) (5,482) 4,793 Total income tax expense $ 228,893 $ 110,970 $ 201,235 Effective tax rate 23.1 % 22.9 % 26.3 %
Schedule of Deferred Tax Assets and Liabilities	The components of the Company's deferred tax assets and liabilities at December 31, 2021 and 2020 are presented below: (in thousands) 2021 2020 Deferred tax assets Allowance for loan losses $ 112,180 $ 165,691 Lease liability 102,412 98,340 Employee benefits and deferred compensation 35,782 27,917 Net operating loss carryforwards 23,897 29,684 Net unrealized losses on investment securities available for sale and cash flow hedges 19,261 — Deferred revenue 18,487 24,751 Tax credit carryforwards 15,870 8,605 Fair value of investment securities and loans 6,439 10,093 Non-performing loan interest 2,621 12,472 Other 7,100 9,819 Total gross deferred tax assets 344,049 387,372 Less valuation allowance (19,003) (19,191) Total deferred tax assets 325,046 368,181 Deferred tax liabilities Right-of-use asset (98,773) (98,681) Excess tax over financial statement depreciation (27,355) (40,452) Purchase accounting intangibles (14,820) (14,458) Other properties held for sale (5,345) (3,025) Prepaid expense (4,631) (5,955) Net unrealized gains on investment securities available for sale and cash flow hedges — (64,344) Other (5,071) (10,418) Total gross deferred tax liabilities (155,995) (237,333) Net deferred tax assets $ 169,051 $ 130,848
Schedule of Net Operating Loss and Tax Credit Carryforward	State NOLs and tax credit carryforwards as of December 31, 2021 are summarized in the following table. Tax Carryforwards As of December 31, 2021 (in thousands) Expiration Dates Deferred Valuation Allowance Net Deferred Tax Asset Balance Net operating losses - federal 2027-2033 $ 19,592 $ (15,851) $ 3,741 Net operating losses - states 2023-2034 4,305 (3,152) 1,153 Other credits - states 2022-2031 15,870 — 15,870
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) 2021 2020 2019 Balance at January 1, $ 20,250 $ 20,994 $ 18,586 Additions based on income tax positions related to current year 3,754 461 550 Additions for income tax positions of prior years (1) 1,379 147 — Additions from acquisition — — 3,464 Reductions for income tax positions of prior years (200) (327) (1,589) Statute of limitation expirations (79) (820) (17) Settlements — (205) — Balance at December 31, $ 25,104 $ 20,250 $ 20,994 (1) Includes deferred tax benefits that could reduce future tax liabilities.

Segment Reporting (Tables)

Segment Reporting (Tables)	12 Months Ended
	Dec. 31, 2021
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, 2021, 2020, and 2019 and as of December 31, 2021 and 2020. The fourth quarter of 2019 was the first financial period in which the new segment reporting became effective; thus, to provide comparable prior year information, Synovus has included proforma business segment financial information for the full year 2019 utilizing various allocation methodologies based on balance sheet and income statement items assigned to each business segment. 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. During the year ended December 31, 2021, Treasury and Corporate Other's net interest income benefited from the recognition of $79.2 million of PPP fees, an increase of $33.2 million from $46.0 million for the year ended December 31, 2020. 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 longer term policy actions designed to keep interest rates low. Year Ended December 31, 2021 (in thousands) Community Banking Wholesale Banking Financial Management Services Treasury and Corporate Other Synovus Consolidated Net interest income $ 808,700 $ 557,943 $ 79,173 $ 87,131 $ 1,532,947 Non-interest revenue 128,026 34,590 211,002 76,448 450,066 Non-interest expense 290,817 90,074 184,257 534,756 1,099,904 Pre-provision net revenue $ 645,909 $ 502,459 $ 105,918 $ (371,177) $ 883,109 Year Ended December 31, 2020 (in thousands) Community Banking Wholesale Banking Financial Management Services Treasury and Corporate Other Synovus Consolidated Net interest income $ 854,021 $ 548,152 $ 79,362 $ 31,213 $ 1,512,748 Non-interest revenue 111,256 26,379 224,620 144,258 506,513 Non-interest expense 297,071 85,250 232,222 565,031 1,179,574 Pre-provision net revenue $ 668,206 $ 489,281 $ 71,760 $ (389,560) $ 839,687 Year Ended December 31, 2019 (Proforma) (in thousands) Community Banking Wholesale Banking Financial Management Services Treasury and Corporate Other Synovus Consolidated Net interest income $ 825,219 $ 518,033 $ 112,431 $ 140,120 $ 1,595,803 Non-interest revenue 136,657 28,948 154,166 36,129 355,900 Non-interest expense 302,327 71,393 152,115 573,133 1,098,968 Pre-provision net revenue $ 659,549 $ 475,588 $ 114,482 $ (396,884) $ 852,735 December 31, 2021 (dollars in thousands) Community Banking Wholesale Banking Financial Management Services Treasury and Corporate Other Synovus Consolidated Loans, net of deferred fees and costs $ 10,791,343 $ 21,496,050 $ 4,994,494 $ 2,030,071 $ 39,311,958 Deposits $ 32,226,477 $ 12,370,554 $ 826,639 $ 4,003,606 $ 49,427,276 Full-time equivalent employees 2,139 284 794 1,670 4,887 December 31, 2020 (dollars in thousands) Community Banking Wholesale Banking Financial Management Services Treasury and Corporate Other Synovus Consolidated Loans, net of deferred fees and costs $ 11,171,055 $ 18,810,729 $ 5,370,748 $ 2,900,452 $ 38,252,984 Deposits $ 29,141,242 $ 11,958,105 $ 739,200 $ 4,853,024 $ 46,691,571 Full-time equivalent employees 2,296 285 835 1,718 5,134

Condensed Financial Informati_2

Condensed Financial Information Of Synovus Financial Corp. (Parent Company Only) (Tables)	12 Months Ended
	Dec. 31, 2021
Condensed Financial Information Disclosure [Abstract]
Schedule of Condensed Balance Sheets	Condensed Balance Sheets December 31, (in thousands) 2021 2020 Assets Cash due from bank subsidiary $ 389,071 $ 439,352 Funds due from other depository institutions 9,277 9,277 Total cash, cash equivalents, and restricted cash 398,348 448,629 Investment in consolidated bank subsidiary, at equity 5,381,311 5,239,849 Investment in consolidated nonbank subsidiaries, at equity 69,712 46,271 Note receivable from bank subsidiary 100,000 100,000 Other assets 25,538 16,975 Total assets $ 5,974,909 $ 5,851,724 Liabilities and Shareholders' Equity Liabilities: Long-term debt $ 607,334 $ 606,406 Other liabilities 70,775 83,984 Total liabilities 678,109 690,390 Shareholders’ equity: Preferred stock 537,145 537,145 Common stock 169,384 168,133 Additional paid-in capital 3,894,109 3,851,208 Treasury stock (931,497) (731,806) Accumulated other comprehensive income (loss), net (82,321) 158,635 Retained earnings 1,709,980 1,178,019 Total shareholders’ equity 5,296,800 5,161,334 Total liabilities and shareholders’ equity $ 5,974,909 $ 5,851,724
Schedule of Condensed Statements of Income	Condensed Statements of Income Years Ended December 31, (in thousands) 2021 2020 2019 Income Cash dividends received from subsidiaries $ 420,000 $ 547,500 $ 400,000 Interest income 777 3,341 5,920 Other income (loss) 1,070 4,966 11,590 Total income 421,847 555,807 417,510 Expense Interest expense 27,616 42,911 41,328 Other expense 10,300 10,584 13,528 Total expense 37,916 53,495 54,856 Income before income taxes and equity in undistributed income of subsidiaries 383,931 502,312 362,654 Allocated income tax benefit (7,834) (12,202) (9,753) Income before equity in undistributed income of subsidiaries 391,765 514,514 372,407 Equity in undistributed income (loss) of subsidiaries 368,702 (140,819) 191,373 Net income 760,467 373,695 563,780 Dividends on preferred stock 33,163 33,163 22,881 Net income available to common shareholders $ 727,304 $ 340,532 $ 540,899
Schedule of Condensed Statements of Comprehensive Income	Condensed Statements of Comprehensive Income Years Ended December 31, 2021 2020 2019 (in thousands) Before-tax Amount Income Tax Net of Tax Amount Before-tax Amount Income Tax Net of Tax Amount Before-tax Amount Income Tax Net of Tax Amount Net income $ 989,360 $ (228,893) $ 760,467 $ 484,665 $ (110,970) $ 373,695 $ 765,015 $ (201,235) $ 563,780 Reclassification adjustment for realized (gains) losses included in net income on investment securities available for sale — — — — — — (22) 6 (16) Other comprehensive gain (loss) of bank subsidiary (324,561) 83,605 (240,956) 125,505 (32,511) 92,994 216,032 (55,955) 160,077 Other comprehensive income (loss) $ (324,561) $ 83,605 $ (240,956) $ 125,505 $ (32,511) $ 92,994 $ 216,010 $ (55,949) $ 160,061 Comprehensive income $ 519,511 $ 466,689 $ 723,841
Schedule of Condensed Statements of Cash Flows	Condensed Statements of Cash Flows Years Ended December 31, (in thousands) 2021 2020 2019 Operating Activities Net income $ 760,467 $ 373,695 $ 563,780 Adjustments to reconcile net income to net cash provided by operating activities: Equity in undistributed (income) loss of subsidiaries (368,702) 140,819 (191,373) Deferred income tax expense (benefit) (7,296) 3,962 1,775 Net increase (decrease) in other liabilities (2,082) 11,243 43,617 Net decrease in other assets 5,280 17,441 3,367 Other, net 928 (5,132) 1,037 Net cash provided by operating activities 388,595 542,028 422,203 Investing Activities Proceeds from sales of investment securities available for sale — — 97,389 Advance of long-term note receivable due from bank subsidiary — — (100,000) Return of investment non-bank subsidiary — — 790 Proceeds from sales of equity securities — 23,141 — Increase in other investments (10,000) — — Net cash received in business combination, net of cash paid — — 4,813 Net cash provided by investing activities (10,000) 23,141 2,992 Financing Activities Dividends paid to common and preferred shareholders (227,840) (223,130) (185,664) Repurchase of common stock (199,932) (16,246) (725,398) Redemption of long-term debt — (250,000) — Proceeds from issuance of long-term debt, net — — 297,174 Proceeds from issuance of preferred stock, net — — 342,005 Other (1,104) (1,552) (1,947) Net cash used in financing activities (428,876) (490,928) (273,830) Increase (decrease) in cash, cash equivalents, and restricted cash (50,281) 74,241 151,365 Cash, cash equivalents, and restricted cash at beginning of year 448,629 374,388 223,023 Cash, cash equivalents, and restricted cash at end of year $ 398,348 $ 448,629 $ 374,388

Summary of Significant Accoun_4

Summary of Significant Accounting Policies - Summary of Corrections (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Basis Of Presentation [Line Items]
Proceeds from sales of investment securities available for sale	$ 565,400	$ 2,649,686	$ 2,923,787
Purchases of investment securities available for sale	(6,877,712)	(6,036,179)	(4,300,021)
Net cash used in investing activities	$ 4,384,166	2,352,973	$ 2,153,862
As Reported
Basis Of Presentation [Line Items]
Proceeds from sales of investment securities available for sale		4,054,670
Purchases of investment securities available for sale		(7,441,163)
Net cash used in investing activities		2,352,973
Adjustment
Basis Of Presentation [Line Items]
Proceeds from sales of investment securities available for sale		(1,404,984)
Purchases of investment securities available for sale		1,404,984
Net cash used in investing activities		$ 0

Summary of Significant Accoun_5

Summary of Significant Accounting Policies - Narrative (Details) $ in Thousands	Jan. 01, 2020USD ($)	Dec. 31, 2021USD ($)segment	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)		Dec. 31, 2018USD ($)
Basis Of Presentation [Line Items]
Federal funds sold		$ 65,100	$ 158,700
Total shareholders’ equity		$ 5,296,800	5,161,334	$ 4,941,690		$ 3,133,602
Number of reportable segments | segment		3
Federal reserve bank stock		$ 143,700	142,500
Required percent of capital or surplus		6.00%
Required percent of deposits		0.60%
Federal home loan bank stock		$ 16,200	15,000
Vesting period		3 years
Cumulative Effect, Period of Adoption, Adjustment
Basis Of Presentation [Line Items]
Total shareholders’ equity				(35,721)	[1]	4,270
Retained Earnings
Basis Of Presentation [Line Items]
Total shareholders’ equity		$ 1,709,980	$ 1,178,019	1,068,327		843,767
Retained Earnings | Cumulative Effect, Period of Adoption, Adjustment
Basis Of Presentation [Line Items]
Total shareholders’ equity	$ 35,700			$ (35,721)	[1]	$ 4,270
Non-employee Director
Basis Of Presentation [Line Items]
Vesting period		3 years
Non-employee
Basis Of Presentation [Line Items]
Vesting period		3 years
Unfunded Loan Commitment
Basis Of Presentation [Line Items]
Financing receivable, purchased with credit deterioration, amount at purchase price	$ 62,200
DRR Methodology
Basis Of Presentation [Line Items]
Loans, net		41.00%	40.00%
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
[1]	For additional information, see "Part II - Item 8. Financial Statements and Supplementary Data - Note 1 - Summary of Significant Accounting Policies.

Summary of Significant Accoun_6

Summary of Significant Accounting Policies - ASC 326 Adoption (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Jan. 01, 2020	Dec. 31, 2019	Dec. 31, 2018
Basis Of Presentation [Line Items]
Financing receivable, allowance for credit loss	$ 427,597	$ 605,736	$ 281,402	$ 281,402	$ 250,555
Reserve for unfunded commitments	41,900		1,375
Allowance for credit losses	469,500	653,500	282,777
Loans, net of deferred fees and costs			36,881,048
Retained earnings	$ 1,709,980	$ 1,178,019	1,068,327
Accounting Standards Update 2016-02
Basis Of Presentation [Line Items]
Financing receivable, allowance for credit loss			364,396
Reserve for unfunded commitments			28,815
Allowance for credit losses			393,211
Loans, net of deferred fees and costs			36,860,281
Retained earnings			1,032,606
Cumulative Effect, Period of Adoption, Adjustment
Basis Of Presentation [Line Items]
Financing receivable, allowance for credit loss			82,994	$ 82,994
Reserve for unfunded commitments			27,440
Allowance for credit losses			110,434
Loans, net of deferred fees and costs			(20,767)
Retained earnings			(35,721)
Commercial and industrial
Basis Of Presentation [Line Items]
Financing receivable, allowance for credit loss			145,782
Commercial and industrial | Accounting Standards Update 2016-02
Basis Of Presentation [Line Items]
Financing receivable, allowance for credit loss			143,472
Commercial and industrial | Cumulative Effect, Period of Adoption, Adjustment
Basis Of Presentation [Line Items]
Financing receivable, allowance for credit loss			(2,310)
Commercial real estate
Basis Of Presentation [Line Items]
Financing receivable, allowance for credit loss			67,430
Commercial real estate | Accounting Standards Update 2016-02
Basis Of Presentation [Line Items]
Financing receivable, allowance for credit loss			66,779
Commercial real estate | Cumulative Effect, Period of Adoption, Adjustment
Basis Of Presentation [Line Items]
Financing receivable, allowance for credit loss			(651)
Consumer mortgages
Basis Of Presentation [Line Items]
Financing receivable, allowance for credit loss			68,190
Consumer mortgages | Accounting Standards Update 2016-02
Basis Of Presentation [Line Items]
Financing receivable, allowance for credit loss			154,145
Consumer mortgages | Cumulative Effect, Period of Adoption, Adjustment
Basis Of Presentation [Line Items]
Financing receivable, allowance for credit loss			$ 85,955

Investment Securities Availab_3

Investment Securities Available for Sale - Summary Of Available For Sale Investment Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 10,991,506	$ 7,801,864
Gross Unrealized Gains	66,427	177,243
Gross Unrealized Losses	(139,604)	(16,669)
Fair Value	10,918,329	7,962,438
U.S. Treasury securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	120,465	20,257
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(2,627)	0
Fair Value	117,838	20,257
U.S. Government agency securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	53,214	79,638
Gross Unrealized Gains	1,374	2,682
Gross Unrealized Losses	(387)	0
Fair Value	54,201	82,320
Mortgage-backed securities issued by U.S. Government agencies
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	790,329	1,216,012
Gross Unrealized Gains	768	7,930
Gross Unrealized Losses	(11,464)	(5,925)
Fair Value	779,633	1,218,017
Mortgage-backed securities issued by U.S. Government sponsored enterprises
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	8,063,890	4,865,858
Gross Unrealized Gains	50,491	134,188
Gross Unrealized Losses	(102,080)	0
Fair Value	8,012,301	5,000,046
Collateralized mortgage obligations issued by U.S. Government agencies or sponsored enterprises
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	951,691	1,245,644
Gross Unrealized Gains	4,658	15,309
Gross Unrealized Losses	(16,726)	(10,576)
Fair Value	939,623	1,250,377
Commercial mortgage-backed securities issued by U.S. Government agencies or sponsored enterprises
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	479,420	354,244
Gross Unrealized Gains	8,644	16,677
Gross Unrealized Losses	(6,320)	0
Fair Value	481,744	370,921
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	18,309	20,211
Gross Unrealized Gains	492	457
Gross Unrealized Losses	0	(168)
Fair Value	$ 18,801	$ 20,500

Investment Securities Availab_4

Investment Securities Available for Sale - Narrative (Details)	Dec. 31, 2021USD ($)security	Dec. 31, 2020USD ($)
Financing Receivable, Impaired [Line Items]
Securities in a loss position for less than twelve months | security	143
Investment securities in a loss position for twelve months or longer | security	37
Allowance for credit loss | $	$ 0
Collateral Pledged
Financing Receivable, Impaired [Line Items]
Pledged to secure deposits | $	$ 4,030,000,000	$ 3,840,000,000

Investment Securities Availab_5

Investment Securities Available for Sale - Schedule Of Unrealized Loss On Investments (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, fair value	$ 6,596,065	$ 1,379,662
Less than 12 months, gross unrealized losses	(96,227)	(16,669)
12 months or longer, fair value	1,523,383	0
12 months or longer, gross unrealized losses	(43,377)	0
Total, fair value	8,119,448	1,379,662
Total, gross unrealized losses	(139,604)	(16,669)
U.S. Treasury securities
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, fair value	49,648
Less than 12 months, gross unrealized losses	(379)
12 months or longer, fair value	47,590
12 months or longer, gross unrealized losses	(2,248)
Total, fair value	97,238
Total, gross unrealized losses	(2,627)
U.S. Government agency securities
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, fair value	21,760
Less than 12 months, gross unrealized losses	(387)
12 months or longer, fair value	0
12 months or longer, gross unrealized losses	0
Total, fair value	21,760
Total, gross unrealized losses	(387)
Mortgage-backed securities issued by U.S. Government agencies
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, fair value	461,078	566,896
Less than 12 months, gross unrealized losses	(5,858)	(5,925)
12 months or longer, fair value	244,264	0
12 months or longer, gross unrealized losses	(5,606)	0
Total, fair value	705,342	566,896
Total, gross unrealized losses	(11,464)	(5,925)
Mortgage-backed securities issued by U.S. Government sponsored enterprises
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, fair value	5,729,476
Less than 12 months, gross unrealized losses	(82,671)
12 months or longer, fair value	643,758
12 months or longer, gross unrealized losses	(19,409)
Total, fair value	6,373,234
Total, gross unrealized losses	(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	187,431	803,429
Less than 12 months, gross unrealized losses	(3,981)	(10,576)
12 months or longer, fair value	504,238	0
12 months or longer, gross unrealized losses	(12,745)	0
Total, fair value	691,669	803,429
Total, gross unrealized losses	(16,726)	(10,576)
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	146,672
Less than 12 months, gross unrealized losses	(2,951)
12 months or longer, fair value	83,533
12 months or longer, gross unrealized losses	(3,369)
Total, fair value	230,205
Total, gross unrealized losses	$ (6,320)
Corporate debt securities and other debt securities
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, fair value		9,337
Less than 12 months, gross unrealized losses		(168)
12 months or longer, fair value		0
12 months or longer, gross unrealized losses		0
Total, fair value		9,337
Total, gross unrealized losses		$ (168)

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, 2021	Dec. 31, 2020
Amortized Cost
Amortized cost, within one year	$ 545,074
Amortized cost, 1 to 5 years	182,307
Amortized cost, 5 to 10 years	452,953
Amortized cost, more than 10 years	9,811,172
Amortized Cost	10,991,506	$ 7,801,864
Fair Value
Fair value, within one year	545,306
Fair value, 1 to 5 years	184,013
Fair value, 5 to 10 years	452,296
Fair value, more than 10 years	9,736,714
Total fair value	10,918,329	7,962,438
U.S. Treasury securities
Amortized Cost
Amortized cost, within one year	20,600
Amortized cost, 1 to 5 years	0
Amortized cost, 5 to 10 years	99,865
Amortized cost, more than 10 years	0
Amortized Cost	120,465	20,257
Fair Value
Fair value, within one year	20,600
Fair value, 1 to 5 years	0
Fair value, 5 to 10 years	97,238
Fair value, more than 10 years	0
Total fair value	117,838	20,257
U.S. Government agency securities
Amortized Cost
Amortized cost, within one year	756
Amortized cost, 1 to 5 years	321
Amortized cost, 5 to 10 years	52,137
Amortized cost, more than 10 years	0
Amortized Cost	53,214	79,638
Fair Value
Fair value, within one year	760
Fair value, 1 to 5 years	322
Fair value, 5 to 10 years	53,119
Fair value, more than 10 years	0
Total fair value	54,201	82,320
Mortgage-backed securities issued by U.S. Government agencies
Amortized Cost
Amortized cost, within one year	0
Amortized cost, 1 to 5 years	842
Amortized cost, 5 to 10 years	131
Amortized cost, more than 10 years	789,356
Amortized Cost	790,329	1,216,012
Fair Value
Fair value, within one year	0
Fair value, 1 to 5 years	870
Fair value, 5 to 10 years	136
Fair value, more than 10 years	778,627
Total fair value	779,633	1,218,017
Mortgage-backed securities issued by U.S. Government sponsored enterprises
Amortized Cost
Amortized cost, within one year	28
Amortized cost, 1 to 5 years	0
Amortized cost, 5 to 10 years	80,539
Amortized cost, more than 10 years	7,983,323
Amortized Cost	8,063,890	4,865,858
Fair Value
Fair value, within one year	28
Fair value, 1 to 5 years	0
Fair value, 5 to 10 years	83,271
Fair value, more than 10 years	7,929,002
Total fair value	8,012,301	5,000,046
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	0
Amortized cost, 5 to 10 years	146
Amortized cost, more than 10 years	951,545
Amortized Cost	951,691	1,245,644
Fair Value
Fair value, within one year	0
Fair value, 1 to 5 years	0
Fair value, 5 to 10 years	150
Fair value, more than 10 years	939,473
Total fair value	939,623	1,250,377
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	181,144
Amortized cost, 5 to 10 years	211,328
Amortized cost, more than 10 years	86,948
Amortized Cost	479,420	354,244
Fair Value
Fair value, within one year	0
Fair value, 1 to 5 years	182,821
Fair value, 5 to 10 years	209,311
Fair value, more than 10 years	89,612
Total fair value	481,744	370,921
Asset-backed securities
Amortized Cost
Amortized cost, within one year	514,188
Amortized cost, 1 to 5 years	0
Amortized cost, 5 to 10 years	0
Amortized cost, more than 10 years	0
Amortized Cost	514,188
Fair Value
Fair value, within one year	514,188
Fair value, 1 to 5 years	0
Fair value, 5 to 10 years	0
Fair value, more than 10 years	0
Total fair value	514,188
Corporate debt securities and other debt securities
Amortized Cost
Amortized cost, within one year	9,502
Amortized cost, 1 to 5 years	0
Amortized cost, 5 to 10 years	8,807
Amortized cost, more than 10 years	0
Amortized Cost	18,309	20,211
Fair Value
Fair value, within one year	9,730
Fair value, 1 to 5 years	0
Fair value, 5 to 10 years	9,071
Fair value, more than 10 years	0
Total fair value	$ 18,801	$ 20,500

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, 2021	Dec. 31, 2020	Dec. 31, 2019
Investments [Abstract]
Gross realized gains on sales	$ 1,191	$ 85,375	$ 10,370
Gross realized losses on sales	(1,990)	(6,444)	(18,029)
Investment securities gains (losses), net	$ (799)	$ 78,931	$ (7,659)

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, 2021	Dec. 31, 2020
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans, net of deferred fees and costs	$ 39,311,958	$ 38,252,984
Non-accrual with an ALL	100,518	127,720
Non-accrual without an ALL	30,524	23,359
Total	39,311,958	38,252,984
Commercial and industrial
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Non-accrual with an ALL	45,064	75,546
Non-accrual without an ALL	27,919	21,859
Total	19,561,161	19,520,168
Commercial and industrial | Commercial, financial, and agricultural
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Non-accrual with an ALL	37,918	55,527
Non-accrual without an ALL	23,869	21,859
Total	12,052,475	12,410,152
Commercial and industrial | Owner-occupied
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Non-accrual with an ALL	7,146	20,019
Non-accrual without an ALL	4,050	0
Total	7,508,686	7,110,016
Commercial real estate
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Non-accrual with an ALL	9,726	28,913
Non-accrual without an ALL	2,605	1,500
Total	10,981,490	10,325,707
Commercial real estate | Investment properties
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Non-accrual with an ALL	3,273	24,631
Non-accrual without an ALL	2,577	0
Total	9,869,155	9,103,379
Commercial real estate | 1-4 family properties
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Non-accrual with an ALL	4,535	2,383
Non-accrual without an ALL	28	1,236
Total	645,469	628,695
Commercial real estate | Land and development
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Non-accrual with an ALL	1,918	1,899
Non-accrual without an ALL	0	264
Total	466,866	593,633
Consumer
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Non-accrual with an ALL	45,728	23,261
Non-accrual without an ALL	0	0
Total	8,769,307	8,407,109
Consumer | Consumer mortgages
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Non-accrual with an ALL	29,078	8,740
Non-accrual without an ALL	0	0
Total	5,069,039	5,513,491
Consumer | Home equity lines
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Non-accrual with an ALL	9,760	12,145
Non-accrual without an ALL	0	0
Total	1,281,989	1,537,726
Consumer | Credit cards
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Non-accrual with an ALL	0	0
Non-accrual without an ALL	0	0
Total	299,556	281,018
Consumer | Other consumer loans
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Non-accrual with an ALL	6,890	2,376
Non-accrual without an ALL	0	0
Total	2,118,723	1,074,874
Current
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans, net of deferred fees and costs	39,123,351	38,054,556
Current | Commercial and industrial
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans, net of deferred fees and costs	19,467,778	19,409,506
Current | Commercial and industrial | Commercial, financial, and agricultural
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans, net of deferred fees and costs	11,973,974	12,321,514
Current | Commercial and industrial | Owner-occupied
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans, net of deferred fees and costs	7,493,804	7,087,992
Current | Commercial real estate
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans, net of deferred fees and costs	10,964,883	10,288,383
Current | Commercial real estate | Investment properties
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans, net of deferred fees and costs	9,861,303	9,075,843
Current | Commercial real estate | 1-4 family properties
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans, net of deferred fees and costs	639,631	621,492
Current | Commercial real estate | Land and development
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans, net of deferred fees and costs	463,949	591,048
Current | Consumer
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans, net of deferred fees and costs	8,690,690	8,356,667
Current | Consumer | Consumer mortgages
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans, net of deferred fees and costs	5,033,579	5,495,415
Current | Consumer | Home equity lines
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans, net of deferred fees and costs	1,269,610	1,521,575
Current | Consumer | Credit cards
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans, net of deferred fees and costs	296,695	276,778
Current | Consumer | Other consumer loans
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans, net of deferred fees and costs	2,090,806	1,062,899
Accruing 30-89 Days Past Due
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans, net of deferred fees and costs	50,795	43,232
Accruing 30-89 Days Past Due | Commercial and industrial
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans, net of deferred fees and costs	16,655	12,169
Accruing 30-89 Days Past Due | Commercial and industrial | Commercial, financial, and agricultural
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans, net of deferred fees and costs	13,028	10,256
Accruing 30-89 Days Past Due | Commercial and industrial | Owner-occupied
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans, net of deferred fees and costs	3,627	1,913
Accruing 30-89 Days Past Due | Commercial real estate
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans, net of deferred fees and costs	3,312	6,721
Accruing 30-89 Days Past Due | Commercial real estate | Investment properties
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans, net of deferred fees and costs	1,285	2,751
Accruing 30-89 Days Past Due | Commercial real estate | 1-4 family properties
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans, net of deferred fees and costs	1,182	3,548
Accruing 30-89 Days Past Due | Commercial real estate | Land and development
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans, net of deferred fees and costs	845	422
Accruing 30-89 Days Past Due | Consumer
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans, net of deferred fees and costs	30,828	24,342
Accruing 30-89 Days Past Due | Consumer | Consumer mortgages
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans, net of deferred fees and costs	6,256	8,851
Accruing 30-89 Days Past Due | Consumer | Home equity lines
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans, net of deferred fees and costs	2,619	4,006
Accruing 30-89 Days Past Due | Consumer | Credit cards
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans, net of deferred fees and costs	1,584	2,363
Accruing 30-89 Days Past Due | Consumer | Other consumer loans
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans, net of deferred fees and costs	20,369	9,122
Accruing 90 Days or Greater Past Due
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans, net of deferred fees and costs	6,770	4,117
Accruing 90 Days or Greater Past Due | Commercial and industrial
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans, net of deferred fees and costs	3,745	1,088
Accruing 90 Days or Greater Past Due | Commercial and industrial | Commercial, financial, and agricultural
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans, net of deferred fees and costs	3,686	996
Accruing 90 Days or Greater Past Due | Commercial and industrial | Owner-occupied
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans, net of deferred fees and costs	59	92
Accruing 90 Days or Greater Past Due | Commercial real estate
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans, net of deferred fees and costs	964	190
Accruing 90 Days or Greater Past Due | Commercial real estate | Investment properties
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans, net of deferred fees and costs	717	154
Accruing 90 Days or Greater Past Due | Commercial real estate | 1-4 family properties
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans, net of deferred fees and costs	93	36
Accruing 90 Days or Greater Past Due | Commercial real estate | Land and development
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans, net of deferred fees and costs	154	0
Accruing 90 Days or Greater Past Due | Consumer
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans, net of deferred fees and costs	2,061	2,839
Accruing 90 Days or Greater Past Due | Consumer | Consumer mortgages
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans, net of deferred fees and costs	126	485
Accruing 90 Days or Greater Past Due | Consumer | Home equity lines
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans, net of deferred fees and costs	0	0
Accruing 90 Days or Greater Past Due | Consumer | Credit cards
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans, net of deferred fees and costs	1,277	1,877
Accruing 90 Days or Greater Past Due | Consumer | Other consumer loans
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans, net of deferred fees and costs	658	477
Total Accruing Past Due
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans, net of deferred fees and costs	57,565	47,349
Total Accruing Past Due | Commercial and industrial
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans, net of deferred fees and costs	20,400	13,257
Total Accruing Past Due | Commercial and industrial | Commercial, financial, and agricultural
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans, net of deferred fees and costs	16,714	11,252
Total Accruing Past Due | Commercial and industrial | Owner-occupied
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans, net of deferred fees and costs	3,686	2,005
Total Accruing Past Due | Commercial real estate
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans, net of deferred fees and costs	4,276	6,911
Total Accruing Past Due | Commercial real estate | Investment properties
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans, net of deferred fees and costs	2,002	2,905
Total Accruing Past Due | Commercial real estate | 1-4 family properties
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans, net of deferred fees and costs	1,275	3,584
Total Accruing Past Due | Commercial real estate | Land and development
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans, net of deferred fees and costs	999	422
Total Accruing Past Due | Consumer
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans, net of deferred fees and costs	32,889	27,181
Total Accruing Past Due | Consumer | Consumer mortgages
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans, net of deferred fees and costs	6,382	9,336
Total Accruing Past Due | Consumer | Home equity lines
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans, net of deferred fees and costs	2,619	4,006
Total Accruing Past Due | Consumer | Credit cards
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans, net of deferred fees and costs	2,861	4,240
Total Accruing Past Due | Consumer | Other consumer loans
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans, net of deferred fees and costs	$ 21,027	$ 9,599

Loans And Allowance For Loan _4

Loans And Allowance For Loan Losses - Narrative (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2021USD ($)contract	Dec. 31, 2020USD ($)contract	Dec. 31, 2019USD ($)contract	Jan. 01, 2020USD ($)	Dec. 31, 2018USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable, impaired, interest lost on nonaccrual loans	$ 11,100	$ 12,600
Loans and leases receivable, impaired, interest income recognized, change in present value attributable to passage of time	1,800	3,900
Loans pledged as collateral	14,190,000	15,050,000
Loans	39,311,958	38,252,984
Financing receivable, change in method, credit loss expense (reversal)		18,300
Transfers to held for sale		1,430,000
Financing receivable, allowance for credit loss	427,597	605,736	$ 281,402	$ 281,402	$ 250,555
Reserve for unfunded commitments	41,900			1,375
Allowance for credit losses	469,500	653,500		$ 282,777
Allowance for credit loss, decrease	$ 184,000
ACL to loans ratio	1.19%
Decrease in ACL to loans ratio	0.0052
Estimated unemployment rate	3.70%
Downside bias	43.00%
Financing receivable, allowance for credit loss, period increase (decrease) from increase in size of loan profile	$ 1,620,000
Financing receivable, purchase	$ 38,600
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	$ 48,932	76,615	$ 49,859
Unfunded Loan Commitment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, allowance for credit loss		$ 47,800
Troubled Debt Restructuring That Subsequently Defaulted
Accounts, Notes, Loans and Financing Receivable [Line Items]
Subsequent default, number of contracts | contract	8,000	7	4
Modifications, post-modification recorded investment	$ 978	$ 21,700	$ 326
Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	19,561,161	19,520,168
Modifications, post-modification recorded investment	27,618	28,917	$ 28,793
Commercial and industrial | Small Business Administration (SBA), CARES Act, Paycheck Protection Program
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 399,600	$ 2,190,000

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, 2021	Dec. 31, 2020
Financing Receivable, Credit Quality Indicator [Line Items]
2021	$ 9,422,021	$ 8,709,446
2020	6,553,714	6,259,069
2019	4,897,449	4,981,643
2018	3,086,000	3,875,295
2017	2,559,500	2,594,349
Prior	4,731,830	4,699,763
Total	$ 39,311,958	$ 38,252,984
Maximum
Financing Receivable, Credit Quality Indicator [Line Items]
Allowance for loan and lease losses, percent of loan amount	50.00%	50.00%
Revolving Loans Amortized Cost Basis
Financing Receivable, Credit Quality Indicator [Line Items]
Total	$ 7,945,964	$ 6,985,664
Revolving Loans Converted to Term Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total	115,480	147,755
Commercial and industrial
Financing Receivable, Credit Quality Indicator [Line Items]
2021	4,201,081	5,241,473
2020	2,696,735	2,722,640
2019	2,112,628	2,098,769
2018	1,549,445	1,662,981
2017	1,184,980	1,130,716
Prior	2,156,245	2,015,220
Total	19,561,161	19,520,168
Commercial and industrial | Revolving Loans Amortized Cost Basis
Financing Receivable, Credit Quality Indicator [Line Items]
Total	5,617,205	4,597,604
Commercial and industrial | Revolving Loans Converted to Term Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total	42,842	50,765
Commercial and industrial | Commercial, financial, and agricultural
Financing Receivable, Credit Quality Indicator [Line Items]
2021	2,416,710	3,911,053
2020	1,398,694	1,414,417
2019	981,693	904,651
2018	637,246	640,754
2017	451,760	565,886
Prior	944,049	674,588
Total	12,052,475	12,410,152
Commercial and industrial | Commercial, financial, and agricultural | Revolving Loans Amortized Cost Basis
Financing Receivable, Credit Quality Indicator [Line Items]
Total	5,179,481	4,248,038
Commercial and industrial | Commercial, financial, and agricultural | Revolving Loans Converted to Term Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total	42,842	50,765
Commercial and industrial | Owner-occupied
Financing Receivable, Credit Quality Indicator [Line Items]
2021	1,784,371	1,330,420
2020	1,298,041	1,308,223
2019	1,130,935	1,194,118
2018	912,199	1,022,227
2017	733,220	564,830
Prior	1,212,196	1,340,632
Total	7,508,686	7,110,016
Commercial and industrial | Owner-occupied | Revolving Loans Amortized Cost Basis
Financing Receivable, Credit Quality Indicator [Line Items]
Total	437,724	349,566
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]
2021	3,271,317	1,344,249
2020	1,591,162	2,469,117
2019	2,079,334	2,366,966
2018	1,256,576	1,431,516
2017	888,314	696,471
Prior	1,460,714	1,649,986
Total	10,981,490	10,325,707
Commercial real estate | Revolving Loans Amortized Cost Basis
Financing Receivable, Credit Quality Indicator [Line Items]
Total	434,073	367,402
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]
2021	2,831,606	1,057,929
2020	1,463,829	2,197,597
2019	1,946,374	2,200,615
2018	1,140,792	1,247,704
2017	800,794	644,017
Prior	1,352,050	1,470,998
Total	9,869,155	9,103,379
Commercial real estate | Investment properties | Revolving Loans Amortized Cost Basis
Financing Receivable, Credit Quality Indicator [Line Items]
Total	333,710	284,519
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]
2021	297,273	199,249
2020	83,183	95,798
2019	53,146	75,087
2018	47,247	89,704
2017	49,546	40,069
Prior	59,441	99,791
Total	645,469	628,695
Commercial real estate | 1-4 family properties | Revolving Loans Amortized Cost Basis
Financing Receivable, Credit Quality Indicator [Line Items]
Total	55,633	28,997
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]
2021	142,438	87,071
2020	44,150	175,722
2019	79,814	91,264
2018	68,537	94,108
2017	37,974	12,385
Prior	49,223	79,197
Total	466,866	593,633
Commercial real estate | Land and development | Revolving Loans Amortized Cost Basis
Financing Receivable, Credit Quality Indicator [Line Items]
Total	44,730	53,886
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]
2021	1,949,623	2,123,724
2020	2,265,817	1,067,312
2019	705,487	515,908
2018	279,979	780,798
2017	486,206	767,162
Prior	1,114,871	1,034,557
Total	8,769,307	8,407,109
Consumer | Revolving Loans Amortized Cost Basis
Financing Receivable, Credit Quality Indicator [Line Items]
Total	1,894,686	2,020,658
Consumer | Revolving Loans Converted to Term Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total	72,638	96,990
Consumer | Consumer mortgages
Financing Receivable, Credit Quality Indicator [Line Items]
2021	1,294,137	1,871,545
2020	1,555,190	875,730
2019	576,292	426,459
2018	228,664	679,144
2017	398,139	686,676
Prior	1,016,321	972,897
Total	5,069,039	5,513,491
Consumer | Consumer mortgages | Revolving Loans Amortized Cost Basis
Financing Receivable, Credit Quality Indicator [Line Items]
Total	296	1,040
Consumer | Consumer mortgages | Revolving Loans Converted to Term Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total	0	0
Consumer | Home equity lines
Financing Receivable, Credit Quality Indicator [Line Items]
2021	0	0
2020	0	0
2019	0	0
2018	0	0
2017	0	0
Prior	0	0
Total	1,281,989	1,537,726
Consumer | Home equity lines | Revolving Loans Amortized Cost Basis
Financing Receivable, Credit Quality Indicator [Line Items]
Total	1,209,351	1,440,736
Consumer | Home equity lines | Revolving Loans Converted to Term Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total	72,638	96,990
Consumer | Credit cards
Financing Receivable, Credit Quality Indicator [Line Items]
2021	0	0
2020	0	0
2019	0	0
2018	0	0
2017	0	0
Prior	0	0
Total	299,556	281,018
Consumer | Credit cards | Revolving Loans Amortized Cost Basis
Financing Receivable, Credit Quality Indicator [Line Items]
Total	299,556	281,018
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]
2021	655,486	252,179
2020	710,627	191,582
2019	129,195	89,449
2018	51,315	101,654
2017	88,067	80,486
Prior	98,550	61,660
Total	2,118,723	1,074,874
Consumer | Other consumer loans | Revolving Loans Amortized Cost Basis
Financing Receivable, Credit Quality Indicator [Line Items]
Total	385,483	297,864
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]
2021	2,397,405	3,819,048
2020	1,332,549	1,333,460
2019	922,396	847,283
2018	607,918	582,612
2017	433,045	551,413
Prior	903,995	633,871
Total	11,696,285	11,920,200
Pass | Commercial and industrial | Commercial, financial, and agricultural | Revolving Loans Amortized Cost Basis
Financing Receivable, Credit Quality Indicator [Line Items]
Total	5,056,168	4,102,751
Pass | Commercial and industrial | Commercial, financial, and agricultural | Revolving Loans Converted to Term Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total	42,809	49,762
Pass | Commercial and industrial | Owner-occupied
Financing Receivable, Credit Quality Indicator [Line Items]
2021	1,776,086	1,321,680
2020	1,276,797	1,275,435
2019	1,117,825	1,131,183
2018	858,721	982,056
2017	708,942	555,932
Prior	1,150,386	1,297,070
Total	7,326,481	6,912,922
Pass | Commercial and industrial | Owner-occupied | Revolving Loans Amortized Cost Basis
Financing Receivable, Credit Quality Indicator [Line Items]
Total	437,724	349,566
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]
2021	2,823,978	1,055,440
2020	1,463,503	2,126,667
2019	1,905,534	1,999,345
2018	1,019,765	1,091,880
2017	738,036	483,780
Prior	1,284,013	1,301,088
Total	9,513,526	8,287,244
Pass | Commercial real estate | Investment properties | Revolving Loans Amortized Cost Basis
Financing Receivable, Credit Quality Indicator [Line Items]
Total	278,697	229,044
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]
2021	295,082	197,320
2020	82,976	95,145
2019	51,939	70,267
2018	43,025	88,454
2017	49,057	38,729
Prior	57,025	97,374
Total	634,692	614,946
Pass | Commercial real estate | 1-4 family properties | Revolving Loans Amortized Cost Basis
Financing Receivable, Credit Quality Indicator [Line Items]
Total	55,588	27,657
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]
2021	141,614	84,985
2020	42,201	173,302
2019	77,868	83,734
2018	34,058	92,911
2017	37,167	12,249
Prior	44,989	76,380
Total	422,627	576,811
Pass | Commercial real estate | Land and development | Revolving Loans Amortized Cost Basis
Financing Receivable, Credit Quality Indicator [Line Items]
Total	44,730	53,250
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]
2021	1,293,106	1,871,512
2020	1,551,510	874,769
2019	570,344	425,711
2018	216,277	678,255
2017	392,422	685,810
Prior	991,080	965,382
Total	5,015,035	5,502,479
Pass | Consumer | Consumer mortgages | Revolving Loans Amortized Cost Basis
Financing Receivable, Credit Quality Indicator [Line Items]
Total	296	1,040
Pass | Consumer | Consumer mortgages | Revolving Loans Converted to Term Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total	0	0
Pass | Consumer | Home equity lines
Financing Receivable, Credit Quality Indicator [Line Items]
2021	0	0
2020	0	0
2019	0	0
2018	0	0
2017	0	0
Prior	0	0
Total	1,266,774	1,520,587
Pass | Consumer | Home equity lines | Revolving Loans Amortized Cost Basis
Financing Receivable, Credit Quality Indicator [Line Items]
Total	1,199,635	1,429,755
Pass | Consumer | Home equity lines | Revolving Loans Converted to Term Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total	67,139	90,832
Pass | Consumer | Credit cards
Financing Receivable, Credit Quality Indicator [Line Items]
2021	0	0
2020	0	0
2019	0	0
2018	0	0
2017	0	0
Prior	0	0
Total	298,287	279,142
Pass | Consumer | Credit cards | Revolving Loans Amortized Cost Basis
Financing Receivable, Credit Quality Indicator [Line Items]
Total	298,287	279,142
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]
2021	654,818	252,160
2020	709,077	190,820
2019	127,131	89,187
2018	50,007	100,459
2017	86,175	80,365
Prior	97,780	61,040
Total	2,110,296	1,071,668
Pass | Consumer | Other consumer loans | Revolving Loans Amortized Cost Basis
Financing Receivable, Credit Quality Indicator [Line Items]
Total	385,308	297,637
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]
2021	2,731	63,307
2020	15,166	40,618
2019	17,571	12,723
2018	10,433	22,070
2017	2,242	1,665
Prior	2,489	5,545
Total	122,628	207,158
Special Mention | Commercial and industrial | Commercial, financial, and agricultural | Revolving Loans Amortized Cost Basis
Financing Receivable, Credit Quality Indicator [Line Items]
Total	71,996	60,741
Special Mention | Commercial and industrial | Commercial, financial, and agricultural | Revolving Loans Converted to Term Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total	0	489
Special Mention | Commercial and industrial | Owner-occupied
Financing Receivable, Credit Quality Indicator [Line Items]
2021	702	6,170
2020	19,950	9,995
2019	4,724	10,682
2018	10,202	14,138
2017	18,109	1,582
Prior	36,481	13,768
Total	90,168	56,335
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]
2021	6,163	1,482
2020	0	66,160
2019	32,290	176,794
2018	63,900	136,004
2017	59,194	138,362
Prior	44,532	129,401
Total	239,738	703,643
Special Mention | Commercial real estate | Investment properties | Revolving Loans Amortized Cost Basis
Financing Receivable, Credit Quality Indicator [Line Items]
Total	33,659	55,440
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]
2021	192	402
2020	207	0
2019	641	508
2018	0	109
2017	0	786
Prior	239	118
Total	1,279	1,923
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]
2021	0	857
2020	800	1,995
2019	1,900	2,866
2018	31,458	282
2017	0	0
Prior	1,179	1,332
Total	35,337	7,968
Special Mention | Commercial real estate | Land and development | Revolving Loans Amortized Cost Basis
Financing Receivable, Credit Quality Indicator [Line Items]
Total	0	636
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]
2021	16,105	28,698
2020	50,979	36,618
2019	40,125	24,867
2018	10,383	36,072
2017	16,473	12,808
Prior	37,565	35,172
Total	222,932	259,247
Substandard | Commercial and industrial | Commercial, financial, and agricultural | Revolving Loans Amortized Cost Basis
Financing Receivable, Credit Quality Indicator [Line Items]
Total	51,269	84,498
Substandard | Commercial and industrial | Commercial, financial, and agricultural | Revolving Loans Converted to Term Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total	33	514
Substandard | Commercial and industrial | Owner-occupied
Financing Receivable, Credit Quality Indicator [Line Items]
2021	7,312	2,570
2020	1,294	22,793
2019	8,386	42,615
2018	43,276	26,033
2017	6,169	7,316
Prior	25,329	29,794
Total	91,766	131,121
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]
2021	1,465	1,007
2020	326	4,770
2019	8,550	24,476
2018	57,127	19,820
2017	3,564	21,875
Prior	23,505	40,509
Total	115,891	112,492
Substandard | Commercial real estate | Investment properties | Revolving Loans Amortized Cost Basis
Financing Receivable, Credit Quality Indicator [Line Items]
Total	21,354	35
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]
2021	1,999	1,527
2020	0	653
2019	566	4,312
2018	4,222	1,141
2017	489	554
Prior	2,177	2,299
Total	9,498	11,826
Substandard | Commercial real estate | 1-4 family properties | Revolving Loans Amortized Cost Basis
Financing Receivable, Credit Quality Indicator [Line Items]
Total	45	1,340
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]
2021	824	1,229
2020	1,149	425
2019	46	4,664
2018	3,021	915
2017	807	136
Prior	3,055	1,485
Total	8,902	8,854
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]
2021	1,031	33
2020	3,680	961
2019	5,943	748
2018	12,387	889
2017	5,717	866
Prior	25,025	7,224
Total	53,783	10,721
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 lines
Financing Receivable, Credit Quality Indicator [Line Items]
2021	0	0
2020	0	0
2019	0	0
2018	0	0
2017	0	0
Prior	0	0
Total	14,417	15,694
Substandard | Consumer | Home equity lines | Revolving Loans Amortized Cost Basis
Financing Receivable, Credit Quality Indicator [Line Items]
Total	9,058	9,698
Substandard | Consumer | Home equity lines | Revolving Loans Converted to Term Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total	5,359	5,996
Substandard | Consumer | Credit cards
Financing Receivable, Credit Quality Indicator [Line Items]
2021	0	0
2020	0	0
2019	0	0
2018	0	0
2017	0	0
Prior	0	0
Total	521	595
Substandard | Consumer | Credit cards | Revolving Loans Amortized Cost Basis
Financing Receivable, Credit Quality Indicator [Line Items]
Total	521	595
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]
2021	668	19
2020	1,550	762
2019	2,064	262
2018	1,308	1,195
2017	1,892	121
Prior	750	585
Total	8,407	3,171
Substandard | Consumer | Other consumer loans | Revolving Loans Amortized Cost Basis
Financing Receivable, Credit Quality Indicator [Line Items]
Total	175	227
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]
2021	469	0
2020	0	3,721
2019	1,601	19,778
2018	8,512	0
2017	0	0
Prior	0	0
Total	10,630	23,547
Doubtful | Commercial and industrial | Commercial, financial, and agricultural | Revolving Loans Amortized Cost Basis
Financing Receivable, Credit Quality Indicator [Line Items]
Total	48	48
Doubtful | Commercial and industrial | Commercial, financial, and agricultural | Revolving Loans Converted to Term Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total	0	0
Doubtful | Commercial and industrial | Owner-occupied
Financing Receivable, Credit Quality Indicator [Line Items]
2021	0	0
2020	0	0
2019	0	9,638
2018	0	0
2017	0	0
Prior	0	0
Total	0	9,638
Doubtful | Commercial and industrial | Owner-occupied | Revolving Loans Amortized Cost Basis
Financing Receivable, Credit Quality Indicator [Line Items]
Total	0	0
Doubtful | Commercial and industrial | Owner-occupied | Revolving Loans Converted to Term Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total	0	0
Doubtful | Consumer | Home equity lines
Financing Receivable, Credit Quality Indicator [Line Items]
2021	0	0
2020	0	0
2019	0	0
2018	0	0
2017	0	0
Prior	0	0
Total	0	19
Doubtful | Consumer | Home equity lines | Revolving Loans Amortized Cost Basis
Financing Receivable, Credit Quality Indicator [Line Items]
Total	0	0
Doubtful | Consumer | Home equity lines | Revolving Loans Converted to Term Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total	0	19
Loss | Commercial and industrial | Owner-occupied
Financing Receivable, Credit Quality Indicator [Line Items]
2021	271
2020	0
2019	0
2018	0
2017	0
Prior	0
Total	271
Loss | Commercial and industrial | Owner-occupied | Revolving Loans Amortized Cost Basis
Financing Receivable, Credit Quality Indicator [Line Items]
Total	0
Loss | Commercial and industrial | Owner-occupied | Revolving Loans Converted to Term Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total	0
Loss | Consumer | Consumer mortgages
Financing Receivable, Credit Quality Indicator [Line Items]
2021	0	0
2020	0	0
2019	5	0
2018	0	0
2017	0	0
Prior	216	291
Total	221	291
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 lines
Financing Receivable, Credit Quality Indicator [Line Items]
2021	0	0
2020	0	0
2019	0	0
2018	0	0
2017	0	0
Prior	0	0
Total	798	1,426
Loss | Consumer | Home equity lines | Revolving Loans Amortized Cost Basis
Financing Receivable, Credit Quality Indicator [Line Items]
Total	658	1,283
Loss | Consumer | Home equity lines | Revolving Loans Converted to Term Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total	140	143
Loss | Consumer | Credit cards
Financing Receivable, Credit Quality Indicator [Line Items]
2021	0	0
2020	0	0
2019	0	0
2018	0	0
2017	0	0
Prior	0	0
Total	748	1,281
Loss | Consumer | Credit cards | Revolving Loans Amortized Cost Basis
Financing Receivable, Credit Quality Indicator [Line Items]
Total	748	1,281
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]
2021	0	0
2020	0	0
2019	0	0
2018	0	0
2017	0	0
Prior	20	35
Total	20	35
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, 2021	Dec. 31, 2020	Dec. 31, 2019
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	$ 605,736	$ 281,402	$ 250,555
Charge-offs	(105,232)	(119,262)	(79,135)
Recoveries	27,444	24,550	21,523
Provision for (reversal of) loan losses	(100,351)	336,052	87,720
Transfer of unfunded commitment reserve			739
Ending balance	427,597	605,736	281,402
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	605,736	364,396
Ending balance		605,736	364,396
Commercial and industrial
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	229,555	145,782	133,123
Charge-offs	(59,457)	(76,260)	(49,572)
Recoveries	9,734	13,544	7,827
Provision for (reversal of) loan losses	8,532	148,799	53,665
Transfer of unfunded commitment reserve			739
Ending balance	188,364	229,555	145,782
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	229,555	143,472
Ending balance		229,555	143,472
Commercial real estate
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	130,742	67,430	68,796
Charge-offs	(15,392)	(13,213)	(5,540)
Recoveries	7,444	2,857	8,618
Provision for (reversal of) loan losses	(25,034)	74,319	(4,444)
Transfer of unfunded commitment reserve			0
Ending balance	97,760	130,742	67,430
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	130,742	66,779
Ending balance		130,742	66,779
Consumer
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	245,439	68,190	48,636
Charge-offs	(30,383)	(29,789)	(24,023)
Recoveries	10,266	8,149	5,078
Provision for (reversal of) loan losses	(83,849)	112,934	38,499
Transfer of unfunded commitment reserve			0
Ending balance	141,473	245,439	68,190
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	$ 245,439	154,145
Ending balance		$ 245,439	$ 154,145

Loans And Allowance For Loan _7

Loans And Allowance For Loan Losses - Troubled Debt Restructurings (Details)	12 Months Ended
	Dec. 31, 2021USD ($)Contract	Dec. 31, 2020USD ($)Contract	Dec. 31, 2019USD ($)Contract
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | Contract	382	352	380
Total loans	$ 48,932,000	$ 76,615,000	$ 49,859,000
Write-down	$ 0	$ 0	$ 0
Commercial and industrial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | Contract	176	174	149
Total loans	$ 27,618,000	$ 28,917,000	$ 28,793,000
Commercial and industrial | Commercial, financial, and agricultural
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | Contract	152	152	127
Total loans	$ 20,842,000	$ 22,851,000	$ 18,915,000
Commercial and industrial | Owner-occupied
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | Contract	24	22	22
Total loans	$ 6,776,000	$ 6,066,000	$ 9,878,000
Commercial real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | Contract	30	35	34
Total loans	$ 6,392,000	$ 34,579,000	$ 5,590,000
Commercial real estate | Investment properties
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | Contract	9	9	8
Total loans	$ 3,130,000	$ 31,099,000	$ 1,548,000
Commercial real estate | 1-4 family properties
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | Contract	13	22	18
Total loans	$ 1,254,000	$ 2,874,000	$ 2,825,000
Commercial real estate | Land and development
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | Contract	8	4	8
Total loans	$ 2,008,000	$ 606,000	$ 1,217,000
Consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | Contract	176	143	197
Total loans	$ 14,922,000	$ 13,119,000	$ 15,476,000
Consumer | Consumer mortgages
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | Contract	18	23	18
Total loans	$ 3,518,000	$ 4,655,000	$ 2,948,000
Consumer | Home equity lines
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | Contract	55	63	70
Total loans	$ 5,249,000	$ 4,500,000	$ 5,546,000
Consumer | Other consumer loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | Contract	103	57	109
Total loans	$ 6,155,000	$ 3,964,000	$ 6,982,000
Below Market Interest Rate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	32,801,000	52,550,000	29,299,000
Below Market Interest Rate | Commercial and industrial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	18,654,000	15,475,000	18,059,000
Below Market Interest Rate | Commercial and industrial | Commercial, financial, and agricultural
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	12,746,000	10,939,000	9,042,000
Below Market Interest Rate | Commercial and industrial | Owner-occupied
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	5,908,000	4,536,000	9,017,000
Below Market Interest Rate | Commercial real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	6,209,000	32,054,000	4,917,000
Below Market Interest Rate | Commercial real estate | Investment properties
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	3,130,000	29,679,000	1,548,000
Below Market Interest Rate | Commercial real estate | 1-4 family properties
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	1,131,000	1,769,000	2,182,000
Below Market Interest Rate | Commercial real estate | Land and development
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	1,948,000	606,000	1,187,000
Below Market Interest Rate | Consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	7,938,000	5,021,000	6,323,000
Below Market Interest Rate | Consumer | Consumer mortgages
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	2,512,000	1,866,000	1,587,000
Below Market Interest Rate | Consumer | Home equity lines
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	4,991,000	1,970,000	3,024,000
Below Market Interest Rate | Consumer | Other consumer loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	435,000	1,185,000	1,712,000
Other Concessions
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	16,131,000	24,065,000	20,560,000
Other Concessions | Commercial and industrial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	8,964,000	13,442,000	10,734,000
Other Concessions | Commercial and industrial | Commercial, financial, and agricultural
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	8,096,000	11,912,000	9,873,000
Other Concessions | Commercial and industrial | Owner-occupied
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	868,000	1,530,000	861,000
Other Concessions | Commercial real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	183,000	2,525,000	673,000
Other Concessions | Commercial real estate | Investment properties
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	0	1,420,000	0
Other Concessions | Commercial real estate | 1-4 family properties
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	123,000	1,105,000	643,000
Other Concessions | Commercial real estate | Land and development
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	60,000	0	30,000
Other Concessions | Consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	6,984,000	8,098,000	9,153,000
Other Concessions | Consumer | Consumer mortgages
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	1,006,000	2,789,000	1,361,000
Other Concessions | Consumer | Home equity lines
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	258,000	2,530,000	2,522,000
Other Concessions | Consumer | Other consumer loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	5,720,000	2,779,000	5,270,000
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, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Total premises, equipment and software	$ 981,468	$ 1,069,349
Less: Accumulated depreciation and amortization	(574,227)	(605,390)
Net premises, equipment and software	407,241	463,959
Land
Property, Plant and Equipment [Line Items]
Total premises, equipment and software	104,768	113,828
Buildings and improvements
Property, Plant and Equipment [Line Items]
Total premises, equipment and software	361,593	407,735
Leasehold improvements
Property, Plant and Equipment [Line Items]
Total premises, equipment and software	55,098	53,174
Furniture, equipment and software
Property, Plant and Equipment [Line Items]
Total premises, equipment and software	441,091	481,560
Construction in progress
Property, Plant and Equipment [Line Items]
Total premises, equipment and software	$ 18,918	$ 13,052

Premises Equipment and Softwa_4

Premises Equipment and Software - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
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	$ 2.2	$ 3.4
Depreciation and amortization expense	50.5	51.6	$ 49.2
Premises and equipment transferred to/(from) other assets, net	33.4	$ 7
Real Estate Assets
Property, Plant and Equipment [Line Items]
Premises and equipment transferred to/(from) other assets, net	$ 17.6

Goodwill And Other Intangible_3

Goodwill And Other Intangible Assets - Schedule of Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Goodwill [Roll Forward]
Beginning balance	$ 452,390	$ 497,267
Goodwill impairment	0	(44,877)	$ 0
Change in goodwill	0
Ending balance	452,390	452,390	497,267
Community Banking Reporting Unit
Goodwill [Roll Forward]
Beginning balance	256,323	256,323
Goodwill impairment		0
Change in goodwill	0
Ending balance	256,323	256,323	256,323
Wholesale Banking Reporting Unit
Goodwill [Roll Forward]
Beginning balance	171,636	171,636
Goodwill impairment		0
Change in goodwill	0
Ending balance	171,636	171,636	171,636
Consumer Mortgage Reporting Unit
Goodwill [Roll Forward]
Beginning balance	0	44,877
Goodwill impairment		(44,877)
Change in goodwill	0
Ending balance	0	0	44,877
Wealth Management Reporting Unit
Goodwill [Roll Forward]
Beginning balance	24,431	24,431
Goodwill impairment		0
Change in goodwill	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, 2021	Dec. 31, 2020	Dec. 31, 2019
Goodwill [Line Items]
Goodwill impairment	$ 0	$ 44,877	$ 0
Amortization of intangibles	$ 9,500	10,600	$ 11,600
Consumer Mortgage Reporting Unit
Goodwill [Line Items]
Goodwill impairment		$ 44,877
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, 2021	Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 69,900	$ 69,900
Accumulated Amortization	(34,304)	(24,788)
Net Carrying Value	35,596	45,112
CDI
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	57,400	57,400
Accumulated Amortization	(28,178)	(19,829)
Net Carrying Value	29,222	37,571
Other
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	12,500	12,500
Accumulated Amortization	(6,126)	(4,959)
Net Carrying Value	$ 6,374	$ 7,541

Goodwill And Other Intangible_6

Goodwill And Other Intangible Assets - Amortization Expense (Details) $ in Thousands	Dec. 31, 2021USD ($)
Aggregate estimated amortization expense
2022	$ 8,472
2023	7,429
2024	6,366
2025	5,266
2026	$ 4,195

Other Assets (Details)

Other Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Other Assets [Abstract]
Investments in tax credits, CRA partnerships, and other investments	$ 426,137	$ 262,855
ROU assets	411,472	380,380
Derivative asset positions	191,708	401,295
Deferred tax asset, net	169,051	130,848
Federal Reserve Bank and FHLB Stock	159,941	157,520
Accrued interest receivable	145,659	177,865
Accounts receivable	81,325	88,286
Mutual funds and mutual funds held in rabbi trusts	43,657	37,650
Prepaid expense	42,874	45,088
MPS receivable	15,320	15,575
Other investments	12,185	1,021
Other real estate	11,818	1,819
Trading account assets, at fair value	8,391	10,880
Miscellaneous other assets	70,660	49,517
Total other assets	$ 1,790,198	$ 1,760,599

Deposits (Details)

Deposits (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Interest-bearing Deposit Liabilities [Abstract]
Interest-bearing demand deposits	$ 9,321,611	$ 8,838,710
Money market accounts	16,364,338	15,277,829
Savings accounts	1,420,647	1,168,672
Time deposits	3,093,027	4,358,100
Brokered deposits	2,835,000	3,570,406
Total interest-bearing deposits	33,034,623	33,213,717
Aggregate amount of time deposits of $250,000 or more	1,330,000	$ 1,800,000
Time Deposits, by Maturity [Abstract]
Maturing within one year	3,025,020
Between 1 - 2 years	789,274
2 - 3 years	171,042
3 - 4 years	79,903
4 - 5 years	41,967
Thereafter	10,269
Total	$ 4,117,475

Long-term Debt and Short-term B

Long-term Debt and Short-term Borrowings - Schedule of Long-term Debt Instruments (Details) - USD ($)	Feb. 10, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Long-term debt		$ 1,204,229,000	$ 1,202,494,000
Repayments of long-term debt, net		0	2,408,939,000	$ 157,226,000
Synovus Bank
Debt Instrument [Line Items]
Other long-term debt		0	145,000
Long-term debt		596,895,000	596,088,000
Synovus Bank | 2.289% Fixed-to-Floating Rate Senior Bank Notes due 2023 | Subsequent Event
Debt Instrument [Line Items]
Repayments of long-term debt, net	$ 405,300,000
Stated percentage	2.289%
Debt, face amount	$ 400,000,000
Synovus Bank | Four Percent Subordinated Notes, Due October 29, 2030
Debt Instrument [Line Items]
Subordinated notes		$ 197,626,000	197,349,000
Stated percentage		4.00%
Debt, face amount		$ 200,000,000
Interest rate period		5 years
Synovus Bank | Four Percent Subordinated Notes, Due October 29, 2030 | US Treasury Rate
Debt Instrument [Line Items]
Basis spread on variable rate		3.625%
Synovus Bank | Senior Notes | 2.289% Fixed-to-Floating Rate Senior Bank Notes due 2023
Debt Instrument [Line Items]
Long-term debt		$ 399,269,000	398,594,000
Stated percentage		2.289%
Debt, face amount		$ 400,000,000
Interest rate period		2 years
Synovus Bank | Senior Notes | 2.289% Fixed-to-Floating Rate Senior Bank Notes due 2023 | 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		$ 607,334,000	606,406,000
Repayments of long-term debt, net		0	250,000,000	$ 0
Parent Company | 5.90% Subordinated Notes, due February 7, 2029
Debt Instrument [Line Items]
Subordinated notes		$ 297,855,000	297,553,000
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		2.00%	2.02%
Parent Company | Senior Notes | 3.125% Senior Notes due November 1, 2022
Debt Instrument [Line Items]
Long-term debt		$ 299,479,000	$ 298,853,000
Stated percentage		3.125%
Debt, face amount		$ 300,000,000

Long-term Debt and Short-term_2

Long-term Debt and Short-term Borrowings - Principal Payments on Long-term Debt (Details) - USD ($) $ in Thousands	Feb. 10, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
2022		$ 300,000
2023		400,000
2024		0
2025		0
2026		0
Thereafter		510,000
Total		1,210,000
Repayments of long-term debt, net		0	$ 2,408,939	$ 157,226
Synovus Bank
Debt Instrument [Line Items]
2022		0
2023		400,000
2024		0
2025		0
2026		0
Thereafter		200,000
Total		600,000
Synovus Bank | 2.289% Fixed-to-Floating Rate Senior Bank Notes due 2023 | Subsequent Event
Debt Instrument [Line Items]
Repayments of long-term debt, net	$ 405,300
Parent Company
Debt Instrument [Line Items]
2022		300,000
2023		0
2024		0
2025		0
2026		0
Thereafter		310,000
Total		610,000
Repayments of long-term debt, net		$ 0	$ 250,000	$ 0

Shareholders' Equity and Othe_3

Shareholders' Equity and Other Comprehensive Income - Changes in Shares by Class (Details) - shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, common stock, shares outstanding (in shares)	148,039,495
Stock options exercised (in shares)	923,000	572,000	820,000
Balance, common stock, shares outstanding (in shares)	145,010,086	148,039,495
Preferred Shares Issued
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance (in shares)	22,000,000	22,000,000	8,000,000
Issuance of preferred stock (in shares)			14,000,000
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]
Balance (in shares)	8,000,000	8,000,000	8,000,000
Issuance of preferred stock (in shares)			0
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]
Balance (in shares)	14,000,000	14,000,000	0
Issuance of preferred stock (in shares)			14,000,000
Balance (in shares)	14,000,000	14,000,000	14,000,000
Common Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance (in shares)	168,133,000	166,801,000	143,300,000
Balance, common stock, shares outstanding (in shares)	148,040,000	147,158,000	115,866,000
Issuance of common stock (in shares)	125,000	379,000	344,000
Warrants exercised and common stock reissued (in shares)	3,000		260,000
Restricted share unit activity (in shares)	355,000	389,000	302,000
Stock options exercised (in shares)	896,000	564,000	812,000
Repurchase of common stock (in shares)	4,400,000	450,000	19,900,000
Repurchase of stock (in shares)	(4,409,000)	(450,000)	(19,903,000)
Balance (in shares)	169,384,000	168,133,000	166,801,000
Balance, common stock, shares outstanding (in shares)	145,010,000	148,040,000	147,158,000
Common Stock | FCB Financial Holdings, Inc.
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock (in shares)			22,043,000
Common stock reissued (in shares)			(27,434,000)
Treasury Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance (in shares)	20,093,000	19,643,000	27,434,000
Issuance of common stock (in shares)	(125,000)
Warrants exercised and common stock reissued (in shares)	(3,000)		(260,000)
Repurchase of common stock (in shares)	4,409,000	450,000	19,903,000
Balance (in shares)	24,374,000	20,093,000	19,643,000
Treasury Stock | FCB Financial Holdings, Inc.
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock reissued (in shares)			(27,434,000)

Shareholders' Equity and Othe_4

Shareholders' Equity and Other Comprehensive Income - Summary of Preferred Stock (Details) - USD ($) $ / shares in Units, $ in Thousands	Jul. 01, 2019	Jun. 21, 2018	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Class of Stock [Line Items]
Proceeds from issuance of stock			$ 0	$ 0	$ 342,005
Fixed-to-Floating Rate Non-Cumulative Perpetual Preferred Stock, Series D
Class of Stock [Line Items]
Proceeds from issuance of stock		$ 200,000
Net Proceeds		$ 195,100
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	$ 350,000
Net Proceeds	$ 342,000
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	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Class of Stock [Line Items]
Repurchases of common stock	$ 199,932,000	$ 16,246,000	$ 725,398,000
Stock repurchase program, authorized amount			725,000,000
Fourth Quarter of 2018
Class of Stock [Line Items]
Stock repurchase program, authorized amount			400,000,000
Authorized 2019
Class of Stock [Line Items]
Stock repurchase program, authorized amount			325,000,000
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	$ 199,900,000	$ 16,200,000	$ 725,000,000
Repurchase of common stock (in shares)	4,400	450	19,900
Treasury Stock
Class of Stock [Line Items]
Repurchases of common stock	$ 199,932,000	$ 16,246,000	$ 725,398,000
Repurchase of common stock (in shares)	4,409	450	19,903

Shareholders' Equity and Othe_6

Shareholders' Equity and Other Comprehensive Income - OCI (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Changes in Accumulated Other Comprehensive Income (Loss) by Component [Roll Forward]
Beginning balance	$ 5,161,334	$ 4,941,690	$ 3,133,602
Other comprehensive income (loss) before reclassifications	(231,951)	153,993	154,442
Amounts reclassified from accumulated other comprehensive income (loss)	(9,005)	(60,999)	5,619
Net current period other comprehensive income (loss)	(240,956)	92,994	160,061
Ending balance	5,296,800	5,161,334	4,941,690
Accumulated other comprehensive income (loss), net	(82,321)	158,635
Net Unrealized Gains (Losses) on Investment Securities Available for Sale
Changes in Accumulated Other Comprehensive Income (Loss) by Component [Roll Forward]
Beginning balance	105,669	83,666	(83,179)
Other comprehensive income (loss) before reclassifications	(174,246)	80,491	161,170
Amounts reclassified from accumulated other comprehensive income (loss)	597	(58,488)	5,675
Net current period other comprehensive income (loss)	(173,649)	22,003	166,845
Ending balance	(67,980)	105,669	83,666
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	52,966	(18,487)	(12,137)
Other comprehensive income (loss) before reclassifications	(57,705)	73,502	(6,350)
Amounts reclassified from accumulated other comprehensive income (loss)	(9,602)	(2,049)	0
Net current period other comprehensive income (loss)	(67,307)	71,453	(6,350)
Ending balance	(14,341)	52,966	(18,487)
Post-Retirement Unfunded Health Benefit
Changes in Accumulated Other Comprehensive Income (Loss) by Component [Roll Forward]
Beginning balance	0	462	896
Other comprehensive income (loss) before reclassifications	0	0	(378)
Amounts reclassified from accumulated other comprehensive income (loss)	0	(462)	(56)
Net current period other comprehensive income (loss)	0	(462)	(434)
Ending balance	0	0	462
AOCI
Changes in Accumulated Other Comprehensive Income (Loss) by Component [Roll Forward]
Beginning balance	158,635	65,641	(94,420)
Net current period other comprehensive income (loss)	(240,956)	92,994	160,061
Ending balance	(82,321)	$ 158,635	$ 65,641
Net Unrealized Gains (Losses) on Cash Flow Hedges
Changes in Accumulated Other Comprehensive Income (Loss) by Component [Roll Forward]
Accumulated other comprehensive income (loss), net	$ 12,100

Regulatory Capital (Details)

Regulatory Capital (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Capital conservation buffer	2.50%
CET1 capital
CET1 capital, actual	$ 4,388,618	$ 4,034,865
CET1 capital, For capital adequacy purposes	2,079,435	1,879,551
Tier 1 risk-based capital
Tier I risk-based capital, actual	4,925,763	4,572,010
Tier I risk-based capital, for capital adequacy purposes	2,772,581	2,506,068
Total risk-based capital
Total risk-based capital, actual	5,827,196	5,604,230
Total risk-based capital, for capital adequacy purposes	$ 3,696,774	$ 3,341,425
CET1 capital ratio
CET1 capital ratio, actual	9.50%	9.66%
CET1 capital ratio, for capital adequacy purposes	4.50%	4.50%
Tier 1 risk-based capital ratio
Tier I risk-based capital ratio, actual	0.1066	0.1095
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	0.1261	0.1342
Total risk-based capital ratio, for capital adequacy purposes	0.0800	0.0800
Leverage ratio
Leverage ratio, actual	0.0872	0.0850
Leverage ratio, for capital adequacy purposes	0.0400	0.0400
Synovus Bank
CET1 capital
CET1 capital, actual	$ 4,998,698	$ 4,641,711
CET1 capital, For capital adequacy purposes	2,076,515	1,880,757
CET1 capital, to be well capitalized under prompt corrective action provisions	2,999,410	2,716,650
Tier 1 risk-based capital
Tier I risk-based capital, actual	4,998,698	4,641,711
Tier I risk-based capital, for capital adequacy purposes	2,768,686	2,507,677
Tier I risk-based capital, to be well capitalized under prompt corrective action provisions	3,691,581	3,343,569
Total risk-based capital
Total risk-based capital, actual	5,587,757	5,361,611
Total risk-based capital, for capital adequacy purposes	3,691,581	3,343,569
Total risk-based capital, to be well capitalized under prompt corrective action provisions	$ 4,614,477	$ 4,176,461
CET1 capital ratio
CET1 capital ratio, actual	10.83%	11.11%
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	0.1083	0.1111
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	0.1211	0.1283
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	0.0886	0.0873
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, 2021	Dec. 31, 2020	Dec. 31, 2019
Earnings Per Share [Abstract]
Net income	$ 760,467	$ 373,695	$ 563,780
Less: Preferred stock dividends	33,163	33,163	22,881
Net income available to common shareholders	$ 727,304	$ 340,532	$ 540,899
Weighted average common shares outstanding, basic (in shares)	147,041	147,415	154,331
Effect of dilutive outstanding equity-based awards, warrants, and earnout payments (in shares)	1,454	795	1,727
Weighted average common shares outstanding, diluted (in shares)	148,495	148,210	156,058
Net income per common share, basic (in dollars per share)	$ 4.95	$ 2.31	$ 3.50
Net income per common share, diluted (in dollars per share)	$ 4.90	$ 2.30	$ 3.47

Net Income Per Common Share - N

Net Income Per Common Share - Narrative (Details) - shares shares in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Earnings Per Share [Abstract]
Antidilutive securities excluded from computation of earnings per share, amount (in shares)	21	602	40

Fair Value Accounting - Financi

Fair Value Accounting - Financial Instruments Measured At Fair Value On A Recurring Basis (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total investment securities available for sale	$ 10,918,329	$ 7,962,438
Mutual funds and mutual funds held in rabbi trusts	43,657	37,650
Derivative assets	191,708	401,295
Mortgage-backed securities issued by U.S. Government agencies
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total investment securities available for sale	779,633	1,218,017
Collateralized mortgage obligations issued by U.S. Government agencies or sponsored enterprises
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total investment securities available for sale	939,623	1,250,377
Asset-backed securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total investment securities available for sale	514,188
U.S. Treasury securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total investment securities available for sale	117,838	20,257
Mortgage-backed securities issued by U.S. Government sponsored enterprises
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total investment securities available for sale	8,012,301	5,000,046
Commercial mortgage-backed securities issued by U.S. Government agencies or sponsored enterprises
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total investment securities available for sale	481,744	370,921
Corporate debt securities and other debt securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total investment securities available for sale	18,801	20,500
Fair Value, Measurements, Recurring
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total trading securities	8,391	10,880
Total investment securities available for sale	10,918,329	7,962,438
Mortgage loans held for sale	108,198	216,647
Other investments	12,185	1,021
Mutual funds and mutual funds held in rabbi trusts	43,657	37,650
GGL/SBA loans servicing asset	3,233	3,258
Derivative assets	191,708	401,295
Trading liability for short positions	200	7,717
Mutual fund held in rabbi trusts	27,205	20,752
Earnout liability	0	5,677
Derivative liabilities	98,602	157,167
Fair Value, Measurements, Recurring | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total trading securities	0	0
Total investment securities available for sale	117,838	20,257
Mortgage loans held for sale	0	0
Other investments	0	0
Mutual funds and mutual funds held in rabbi trusts	43,657	37,650
GGL/SBA loans servicing asset	0	0
Derivative assets	0	0
Trading liability for short positions	0	0
Mutual fund held in rabbi trusts	27,205	20,752
Earnout liability	0	0
Derivative liabilities	0	0
Fair Value, Measurements, Recurring | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total trading securities	8,391	10,880
Total investment securities available for sale	10,800,491	7,940,160
Mortgage loans held for sale	108,198	216,647
Other investments	0	0
Mutual funds and mutual funds held in rabbi trusts	0	0
GGL/SBA loans servicing asset	0	0
Derivative assets	191,708	401,295
Trading liability for short positions	200	7,717
Mutual fund held in rabbi trusts	0	0
Earnout liability	0	0
Derivative liabilities	95,067	155,119
Fair Value, Measurements, Recurring | Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total trading securities	0	0
Total investment securities available for sale	0	2,021
Mortgage loans held for sale	0	0
Other investments	12,185	1,021
Mutual funds and mutual funds held in rabbi trusts	0	0
GGL/SBA loans servicing asset	3,233	3,258
Derivative assets	0	0
Trading liability for short positions	0	0
Mutual fund held in rabbi trusts	0	0
Earnout liability	0	5,677
Derivative liabilities	3,535	2,048
Fair Value, Measurements, Recurring | Mortgage-backed securities issued by U.S. Government agencies
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total trading securities	197	10,185
Total investment securities available for sale	779,633	1,218,017
Fair Value, Measurements, Recurring | Mortgage-backed securities issued by U.S. Government agencies | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
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
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total trading securities	197	10,185
Total investment securities available for sale	779,633	1,218,017
Fair Value, Measurements, Recurring | Mortgage-backed securities issued by U.S. Government agencies | Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
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
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total trading securities	671	158
Total investment securities available for sale	939,623	1,250,377
Fair Value, Measurements, Recurring | Collateralized mortgage obligations issued by U.S. Government agencies or sponsored enterprises | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
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
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total trading securities	671	158
Total investment securities available for sale	939,623	1,250,377
Fair Value, Measurements, Recurring | Collateralized mortgage obligations issued by U.S. Government agencies or sponsored enterprises | Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total trading securities	0	0
Total investment securities available for sale	0	0
Fair Value, Measurements, Recurring | Other mortgage-backed securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total trading securities	0	178
Fair Value, Measurements, Recurring | Other mortgage-backed securities | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total trading securities	0	0
Fair Value, Measurements, Recurring | Other mortgage-backed securities | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total trading securities	0	178
Fair Value, Measurements, Recurring | Other mortgage-backed securities | Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total trading securities	0	0
Fair Value, Measurements, Recurring | State and municipal securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total trading securities	560	176
Fair Value, Measurements, Recurring | State and municipal securities | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total trading securities	0	0
Fair Value, Measurements, Recurring | State and municipal securities | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total trading securities	560	176
Fair Value, Measurements, Recurring | State and municipal securities | Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total trading securities	0	0
Fair Value, Measurements, Recurring | Asset-backed securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total trading securities	6,963	183
Total investment securities available for sale	514,188	0
Fair Value, Measurements, Recurring | Asset-backed securities | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total trading securities	0	0
Total investment securities available for sale	0	0
Fair Value, Measurements, Recurring | Asset-backed securities | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total trading securities	6,963	183
Total investment securities available for sale	514,188	0
Fair Value, Measurements, Recurring | Asset-backed securities | Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total trading securities	0	0
Total investment securities available for sale	0	0
Fair Value, Measurements, Recurring | U.S. Treasury securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total investment securities available for sale	117,838	20,257
Fair Value, Measurements, Recurring | U.S. Treasury securities | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total investment securities available for sale	117,838	20,257
Fair Value, Measurements, Recurring | U.S. Treasury securities | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total investment securities available for sale	0	0
Fair Value, Measurements, Recurring | U.S. Treasury securities | Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total investment securities available for sale	0	0
Fair Value, Measurements, Recurring | U.S. Government agency securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total investment securities available for sale	54,201	82,320
Fair Value, Measurements, Recurring | U.S. Government agency securities | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total investment securities available for sale	0	0
Fair Value, Measurements, Recurring | U.S. Government agency securities | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total investment securities available for sale	54,201	82,320
Fair Value, Measurements, Recurring | U.S. Government agency securities | Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total investment securities available for sale	0	0
Fair Value, Measurements, Recurring | Mortgage-backed securities issued by U.S. Government sponsored enterprises
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total investment securities available for sale	8,012,301	5,000,046
Fair Value, Measurements, Recurring | Mortgage-backed securities issued by U.S. Government sponsored enterprises | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total investment securities available for sale	0	0
Fair Value, Measurements, Recurring | Mortgage-backed securities issued by U.S. Government sponsored enterprises | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total investment securities available for sale	8,012,301	5,000,046
Fair Value, Measurements, Recurring | Mortgage-backed securities issued by U.S. Government sponsored enterprises | Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
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
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total investment securities available for sale	481,744	370,921
Fair Value, Measurements, Recurring | Commercial mortgage-backed securities issued by U.S. Government agencies or sponsored enterprises | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
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
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total investment securities available for sale	481,744	370,921
Fair Value, Measurements, Recurring | Commercial mortgage-backed securities issued by U.S. Government agencies or sponsored enterprises | Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total investment securities available for sale	0	0
Fair Value, Measurements, Recurring | Corporate debt securities and other debt securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total investment securities available for sale	18,801	20,500
Fair Value, Measurements, Recurring | Corporate debt securities and other debt securities | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total investment securities available for sale	0	0
Fair Value, Measurements, Recurring | Corporate debt securities and other debt securities | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total investment securities available for sale	18,801	18,479
Fair Value, Measurements, Recurring | Corporate debt securities and other debt securities | Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total investment securities available for sale	$ 0	$ 2,021

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, 2021	Dec. 31, 2020	Dec. 31, 2019
Fair Value Disclosures [Abstract]
Mortgage loans held for sale	$ (3,942)	$ 3,400	$ 1,675
Fair value	108,198	216,647	115,173
Unpaid principal balance	105,785	210,292	112,218
Fair value less aggregate unpaid principal balance	$ 2,413	$ 6,355	$ 2,955

Fair Value Accounting - Chang_2

Fair Value Accounting - Changes In Level 3 Fair Value Measurements (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Investment securities available for sale, at fair value	$ 10,918,329	$ 7,962,438
Corporate debt securities and other debt securities
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Investment securities available for sale, at fair value	18,801	20,500
Fair Value, Measurements, Recurring
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Investment securities available for sale, at fair value	10,918,329	7,962,438
Other investments	12,185	1,021
GGL/SBA loans servicing asset	3,233	3,258
Earnout liability	0	5,677
Derivative liabilities	98,602	157,167
Fair Value, Measurements, Recurring | Corporate debt securities and other debt securities
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Investment securities available for sale, at fair value	18,801	20,500
Level 3 | Fair Value, Measurements, Recurring
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Investment securities available for sale, at fair value	0	2,021
Other investments	12,185	1,021
GGL/SBA loans servicing asset	3,233	3,258
Earnout liability	0	5,677
Derivative liabilities	3,535	2,048
Level 3 | Fair Value, Measurements, Recurring | Corporate debt securities and other debt securities
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Investment securities available for sale, at fair value	$ 0	$ 2,021
Level 3 | Fair Value, Measurements, Recurring | Discounted cash flow analysis
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Servicing assets and servicing liabilities at fair value, assumptions used to estimate fair value, discount rate	8.55%	4.96%
Servicing assets and servicing liabilities at fair value, assumptions used to estimate fair value, discount rate		4.06%
Servicing assets and servicing liabilities at fair value, assumptions used to estimate fair value, discount rate	18.50%
GGL/SBA Loans Servicing Asset | Level 3 | Fair Value, Measurements, Recurring
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Beginning balance	$ 3,258	$ 3,040
Included in earnings	(1,339)	(1,000)
Sales	0
Unrealized gains (losses) included in other comprehensive income		0
Additions	0	1,218
Settlements	1,314	0
Ending balance	3,233	3,258
Total net gain (losses) for the year included in earnings attributable to the change in unrealized gains (losses)	0	0
GGL/SBA loans servicing asset		$ 3,258
GGL/SBA Loans Servicing Asset | Level 3 | Fair Value, Measurements, Recurring | Discounted cash flow analysis
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Servicing assets and servicing liabilities at fair value, assumptions used to estimate fair value, discount rate		10.79%
Servicing assets and servicing liabilities at fair value, assumptions used to estimate fair value, discount rate		18.81%
Earnout Liability | Level 3 | Fair Value, Measurements, Recurring
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Beginning balance	(5,677)	$ (11,016)
Included in earnings	(507)	(4,908)
Sales	0
Unrealized gains (losses) included in other comprehensive income		0
Additions	0	0
Settlements	6,184	10,247
Ending balance	0	(5,677)
Total net gain (losses) for the year included in earnings attributable to the change in unrealized gains (losses)		(4,908)
Visa Derivative Liability | Level 3 | Fair Value, Measurements, Recurring
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Beginning balance	(2,048)	(2,339)
Included in earnings	(2,656)	(890)
Sales	0
Unrealized gains (losses) included in other comprehensive income		0
Additions	0	0
Settlements	1,169	1,181
Ending balance	(3,535)	(2,048)
Total net gain (losses) for the year included in earnings attributable to the change in unrealized gains (losses)	$ (2,656)	$ (890)
Visa Derivative Liability | Level 3 | Fair Value, Measurements, Recurring | Discounted cash flow analysis | Minimum
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
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
Visa Derivative Liability | Level 3 | Fair Value, Measurements, Recurring | Discounted cash flow analysis | Maximum
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Estimated timing of resolution of covered litigation and future cumulative deposits to the litigation escrow for settlement of the covered litigation	1 year 9 months 18 days	1 year 9 months 18 days
Investment Securities Available for Sale | Level 3 | Fair Value, Measurements, Recurring
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Beginning balance	$ 2,021	$ 2,105
Included in earnings	0	0
Sales	(2,021)
Unrealized gains (losses) included in other comprehensive income		(84)
Additions	0	0
Settlements	0	0
Ending balance	0	2,021
Total net gain (losses) for the year included in earnings attributable to the change in unrealized gains (losses)	0	0
Other investments | Level 3 | Fair Value, Measurements, Recurring
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Beginning balance	1,021	3,887
Included in earnings	1,164	(2,866)
Sales	0
Unrealized gains (losses) included in other comprehensive income		0
Additions	10,000	0
Settlements	0	0
Ending balance	12,185	1,021
Total net gain (losses) for the year included in earnings attributable to the change in unrealized gains (losses)	$ 1,164	$ (2,866)

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, 2021	Dec. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other real estate	$ 11,818	$ 1,819
Fair Value, Measurements, Nonrecurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	19,482	44,802
Other real estate	270	860
MPS receivable	0	15,575
Other assets held for sale	$ 1,256	2,354
Fair Value, Measurements, Nonrecurring | 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	51.00%
Fair Value, Measurements, Nonrecurring | 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	20.00%
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
MPS receivable	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
MPS receivable	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	19,482	44,802
Other real estate	270	860
MPS receivable	0	15,575
Other assets held for sale	$ 1,256	$ 2,354
Fair Value, Measurements, Nonrecurring | Level 3 | Minimum | Collateral Dependent Impaired Loans | 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	0.00%	0.00%
Fair value inputs, estimated selling costs	0.00%	0.00%
Fair Value, Measurements, Nonrecurring | Level 3 | Minimum | Other real estate | 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	0.00%	0.00%
Fair value inputs, estimated selling costs	0.00%	0.00%
Fair Value, Measurements, Nonrecurring | Level 3 | Minimum | 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	0.00%	0.00%
Fair value inputs, estimated selling costs	0.00%	0.00%
Fair Value, Measurements, Nonrecurring | Level 3 | Maximum | Collateral Dependent Impaired Loans | 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	71.00%	39.00%
Fair value inputs, estimated selling costs	10.00%	7.00%
Fair Value, Measurements, Nonrecurring | Level 3 | Maximum | Other real estate | 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	48.00%	23.00%
Fair value inputs, estimated selling costs	10.00%	10.00%
Fair Value, Measurements, Nonrecurring | Level 3 | 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		66.00%
Fair value inputs, estimated selling costs	10.00%	10.00%
Fair Value, Measurements, Nonrecurring | Level 3 | Weighted Average | Collateral Dependent Impaired Loans | 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	48.00%	25.00%
Fair value inputs, estimated selling costs	7.00%	7.00%
Fair Value, Measurements, Nonrecurring | Level 3 | Weighted Average | Other real estate | 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	24.00%	12.00%
Fair value inputs, estimated selling costs	7.00%	7.00%
Fair Value, Measurements, Nonrecurring | Level 3 | 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		45.00%
Fair value inputs, estimated selling costs	7.00%	7.00%

Fair Value Accounting - Fair Va

Fair Value Accounting - Fair Value Adjustments Recognized in Earnings for Assets Measured at Fair Value on a Non-recurring Basis (Details) - Fair Value, Measurements, Nonrecurring - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Loans | Provision for credit losses
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value adjustment	$ 27,613	$ 21,927
Other real estate | Other operating expense
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value adjustment	120	200
MPS receivable | Other operating expense
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value adjustment	0	2,663
Other assets held for sale | Other operating expense
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value adjustment	$ 462	$ 2,292

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, 2021	Dec. 31, 2020	Jan. 01, 2020
Financial assets
Total investment securities available for sale	$ 10,918,329	$ 7,962,438
Loans held for sale	750,642	760,123
Mutual funds and mutual funds held in rabbi trusts	43,657	37,650
Loans, net of deferred fees and costs			$ 36,881,048
Derivative assets	191,708	401,295
Financial Liabilities
Non-interest-bearing deposits	16,392,653	13,477,854
Time deposits	4,117,475
Total deposits	49,427,276	46,691,571
Securities sold under repurchase agreements	264,133	227,922
Long-term debt	1,204,229	1,202,494
Fair Value, Measurements, Recurring
Financial assets
Trading securities	8,391	10,880
Total investment securities available for sale	10,918,329	7,962,438
Other investments	12,185	1,021
Mutual funds and mutual funds held in rabbi trusts	43,657	37,650
GGL/SBA loans servicing asset	3,233	3,258
Derivative assets	191,708	401,295
Financial Liabilities
Trading liability for short positions	200	7,717
Earnout liability	0	5,677
Mutual fund held in rabbi trusts	27,205	20,752
Derivative liabilities	98,602	157,167
Level 1 | Fair Value, Measurements, Recurring
Financial assets
Total cash, cash equivalents, and restricted cash	3,009,853	4,252,917
Trading securities	0	0
Total investment securities available for sale	117,838	20,257
Loans held for sale	0	0
Other investments	0	0
Mutual funds and mutual funds held in rabbi trusts	43,657	37,650
Loans, net of deferred fees and costs	0	0
GGL/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
Securities sold under repurchase agreements	264,133	227,922
Trading liability for short positions	0	0
Long-term debt	0	0
Earnout liability	0	0
Mutual fund held in rabbi trusts	27,205	20,752
Derivative liabilities	0	0
Level 2 | Fair Value, Measurements, Recurring
Financial assets
Total cash, cash equivalents, and restricted cash	0	0
Trading securities	8,391	10,880
Total investment securities available for sale	10,800,491	7,940,160
Loans held for sale	108,198	216,647
Other investments	0	0
Mutual funds and mutual funds held in rabbi trusts	0	0
Loans, net of deferred fees and costs	0	0
GGL/SBA loans servicing asset	0	0
FRB and FHLB stock	159,941	157,520
Derivative assets	191,708	401,295
Financial Liabilities
Non-interest-bearing deposits	16,392,653	13,477,854
Non-time interest-bearing deposits	28,917,148	27,265,521
Time deposits	4,125,673	5,970,146
Total deposits	49,435,474	46,713,521
Securities sold under repurchase agreements	0	0
Trading liability for short positions	200	7,717
Long-term debt	1,243,147	1,266,825
Earnout liability	0	0
Mutual fund held in rabbi trusts	0	0
Derivative liabilities	95,067	155,119
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	2,021
Loans held for sale	641,782	544,292
Other investments	12,185	1,021
Mutual funds and mutual funds held in rabbi trusts	0	0
Loans, net of deferred fees and costs	39,118,275	37,605,881
GGL/SBA loans servicing asset	3,233	3,258
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
Securities sold under repurchase agreements	0	0
Trading liability for short positions	0	0
Long-term debt	0	0
Earnout liability	0	5,677
Mutual fund held in rabbi trusts	0	0
Derivative liabilities	3,535	2,048
Carrying Value | Fair Value, Measurements, Recurring
Financial assets
Total cash, cash equivalents, and restricted cash	3,009,853	4,252,917
Trading securities	8,391	10,880
Total investment securities available for sale	10,918,329	7,962,438
Loans held for sale	750,642	760,123
Other investments	12,185	1,021
Mutual funds and mutual funds held in rabbi trusts	43,657	37,650
Loans, net of deferred fees and costs	38,884,361	37,647,248
GGL/SBA loans servicing asset	3,233	3,258
FRB and FHLB stock	159,941	157,520
Derivative assets	191,708	401,295
Financial Liabilities
Non-interest-bearing deposits	16,392,653	13,477,854
Non-time interest-bearing deposits	28,917,148	27,265,521
Time deposits	4,117,475	5,948,196
Total deposits	49,427,276	46,691,571
Securities sold under repurchase agreements	264,133	227,922
Trading liability for short positions	200	7,717
Long-term debt	1,204,229	1,202,494
Earnout liability		5,677
Mutual fund held in rabbi trusts	27,205	20,752
Derivative liabilities	98,602	157,167
Fair Value | Fair Value, Measurements, Recurring
Financial assets
Total cash, cash equivalents, and restricted cash	3,009,853	4,252,917
Trading securities	8,391	10,880
Total investment securities available for sale	10,918,329	7,962,438
Loans held for sale	749,980	760,939
Other investments	12,185	1,021
Mutual funds and mutual funds held in rabbi trusts	43,657	37,650
Loans, net of deferred fees and costs	39,118,275	37,605,881
GGL/SBA loans servicing asset	3,233	3,258
FRB and FHLB stock	159,941	157,520
Derivative assets	191,708	401,295
Financial Liabilities
Non-interest-bearing deposits	16,392,653	13,477,854
Non-time interest-bearing deposits	28,917,148	27,265,521
Time deposits	4,125,673	5,970,146
Total deposits	49,435,474	46,713,521
Securities sold under repurchase agreements	264,133	227,922
Trading liability for short positions	200	7,717
Long-term debt	1,243,147	1,266,825
Earnout liability		5,677
Mutual fund held in rabbi trusts	27,205	20,752
Derivative liabilities	$ 98,602	$ 157,167

Derivative Instruments - Narrat

Derivative Instruments - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Derivative [Line Items]
Net unrealized gains (losses) arising during the period	$ (77,948)	$ 99,193	$ (8,570)
Unrealized gain, after tax	(57,705)	73,502	$ (6,350)
Pre-tax income	12,900	2,800
Unamortized deferred net loss balance from previously terminated cash flow hedges	27,000
Pre-tax gains included in interest income on cash flow hedges	4,000
Collateral	64,500	155,400
Variation margin, amount reducing derivative liability	94,600	162,700
Visa Derivative Liability | Level 3 | Fair Value, Measurements, Recurring
Derivative [Line Items]
Derivative, fair value adjustment	2,700	890
Cash Flow Hedging
Derivative [Line Items]
Net unrealized gains (losses) arising during the period	1,200	9,800
Unrealized gain, after tax	$ 930	$ 7,300

Derivative Instruments - Impact

Derivative Instruments - Impact Of Derivatives On Balance Sheet (Details) - USD ($)	Dec. 31, 2021	Dec. 31, 2020
Not Designated As Hedging Instruments
Derivative [Line Items]
Fair value of derivative assets	$ 169,704,000	$ 320,493,000
Fair value of derivative liabilities	78,207,000	157,167,000
Not Designated As Hedging Instruments | Interest rate contracts
Derivative [Line Items]
Notional Amount	9,653,600,000	8,784,141,000
Fair value of derivative assets	167,560,000	314,234,000
Fair value of derivative liabilities	74,514,000	153,204,000
Not Designated As Hedging Instruments | Mortgage derivatives | Mortgage derivatives - interest rate lock commitments
Derivative [Line Items]
Notional Amount	99,006,000	306,138,000
Fair value of derivative assets	2,105,000	6,259,000
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	105,500,000	230,500,000
Fair value of derivative assets	0	0
Fair value of derivative liabilities	122,000	1,611,000
Not Designated As Hedging Instruments | Other contracts
Derivative [Line Items]
Notional Amount	293,059,000	234,884,000
Fair value of derivative assets	0	0
Fair value of derivative liabilities	36,000	304,000
Not Designated As Hedging Instruments | Foreign exchange contracts
Derivative [Line Items]
Notional Amount	22,387,000	24,125,000
Fair value of derivative assets	39,000
Fair value of derivative liabilities	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	3,535,000	2,048,000
Not Designated As Hedging Instruments | Price Risk Derivative
Derivative [Line Items]
Notional Amount	81,200,000	2,600,000
Cash Flow Hedging
Derivative [Line Items]
Fair value of derivative assets	22,004,000	80,802,000
Fair value of derivative liabilities	20,395,000	0
Cash Flow Hedging | Interest rate contracts
Derivative [Line Items]
Notional Amount	3,600,000,000	3,000,000,000
Fair value of derivative assets	22,004,000	80,802,000
Fair value of derivative liabilities	$ 20,395,000	$ 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, 2021	Dec. 31, 2020	Dec. 31, 2019
Derivative [Line Items]
Total amounts presented on the consolidated statements of income in interest income on loans	$ 31,522	$ 22,215	$ 0
Not Designated As Hedging Instruments
Derivative [Line Items]
Derivative, gain (loss) on derivative, net	399	1,646	(3,043)
Interest rate contracts | Cash Flow Hedging
Derivative [Line Items]
Realized gains (losses) reclassified from AOCI, pre-tax, to interest income on loans	12,862	2,765	0
Pre-tax income recognized on cash flow hedges	12,862	2,765	0
Interest rate contracts | Not Designated As Hedging Instruments | Capital markets income
Derivative [Line Items]
Derivative, gain (loss) on derivative, net	100	(777)	(338)
Other contracts | Not Designated As Hedging Instruments | Capital markets income
Derivative [Line Items]
Derivative, gain (loss) on derivative, net	269	(213)	(91)
Foreign exchange contracts | Not Designated As Hedging Instruments | Capital markets income
Derivative [Line Items]
Derivative, gain (loss) on derivative, net	39	0	0
Mortgage derivatives - interest rate lock commitments | Not Designated As Hedging Instruments | Mortgage banking income
Derivative [Line Items]
Derivative, gain (loss) on derivative, net	(4,154)	4,969	346
Mortgage derivatives - forward commitments to sell fixed-rate mortgage loans | Not Designated As Hedging Instruments | Mortgage banking income
Derivative [Line Items]
Derivative, gain (loss) on derivative, net	1,489	(1,443)	651
Visa Derivative Liability | Not Designated As Hedging Instruments | Other non-interest expense
Derivative [Line Items]
Derivative, gain (loss) on derivative, net	$ 2,656	(890)	$ (3,611)
Swap | Not Designated As Hedging Instruments | Capital markets income
Derivative [Line Items]
Derivative, gain (loss) on derivative, net		$ 2,500

Commitments and Contingencies -

Commitments and Contingencies - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Jan. 01, 2020	Dec. 31, 2019	Dec. 31, 2018
Loss Contingencies [Line Items]
Reserve for unfunded commitments	$ 41,900,000		$ 1,375,000
Financing receivable, allowance for credit loss	427,597,000	$ 605,736,000	$ 281,402,000	$ 281,402,000	$ 250,555,000
Other Assets
Loss Contingencies [Line Items]
Guarantor obligations, advanced payment to merchant	15,300,000
Total letters of credit and unfunded lending commitments		15,600,000
Unfunded Loan Commitment
Loss Contingencies [Line Items]
Financing receivable, allowance for credit loss		47,800,000
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	105,140,000,000	78,190,000,000
Total letters of credit and unfunded lending commitments	$ 16,256,231,000	$ 14,768,588,000

Commitments and Contingencies_2

Commitments and Contingencies - Small Business Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Loss Contingencies [Line Items]
Carrying amount included in other assets	$ 426,137	$ 262,855
Amount of future funding commitments	250,733	133,946
Permanent and short-term construction loans and letter of credit commitments	204,391	82,786
Funded portion of permanent and short-term loans and letters of credit	104,315	9,528
Letters of credit
Loss Contingencies [Line Items]
Total letters of credit and unfunded lending commitments	183,463	190,562
Amounts participated	26,000	30,000
Commitments to fund commercial and industrial loans
Loss Contingencies [Line Items]
Total letters of credit and unfunded lending commitments	9,069,588	8,200,608
Commitments to fund commercial real estate, construction, and land development loans
Loss Contingencies [Line Items]
Total letters of credit and unfunded lending commitments	3,593,171	3,290,041
Commitments under home equity lines of credit
Loss Contingencies [Line Items]
Total letters of credit and unfunded lending commitments	1,805,869	1,602,831
Unused credit card lines
Loss Contingencies [Line Items]
Total letters of credit and unfunded lending commitments	999,787	1,012,313
Other loan commitments
Loss Contingencies [Line Items]
Total letters of credit and unfunded lending commitments	604,353	472,233
Guarantee Obligations
Loss Contingencies [Line Items]
Total letters of credit and unfunded lending commitments	16,256,231	14,768,588
Permanent and Short-term Construction Loans and Letter of Credit Commitments
Loss Contingencies [Line Items]
Amounts participated	3,000	1,800
Funded Portion of Permanent and Short-term Loans and Letters of Credit
Loss Contingencies [Line Items]
Amounts participated	$ 3,000	$ 234

Share-based Compensation and _3

Share-based Compensation and Other Employment Benefit Plans - Narrative (Details) $ in Millions	Jan. 01, 2019shares	Dec. 31, 2021USD ($)simulationshares	Dec. 31, 2020USD ($)shares	Dec. 31, 2019USD ($)shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period		3 years
Award requisite service period		3 years
Tax benefit recognized from compensation expense		$ 7	$ 4.8	$ 6.3
Unrecognized compensation cost		$ 30.3
Unrecognized compensation cost, period of recognition (years)		1 year 10 months 13 days
Stock option grants (in shares) | shares		0	0	0
Assumed in acquisition (in shares) | shares		0	0	3,230,000
Options outstanding, intrinsic value		$ 37.2
Options outstanding, weighted average remaining contractual term (years)		2 years 6 months 3 days
Options exercised, intrinsic value		$ 21.3	$ 5.3	$ 13.6
Performance period		3 years
FCB Financial Holdings, Inc.
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Assumed in acquisition (in shares) | shares	3,200,000
Market/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		$ 2.4	7.9	5.7
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		50.00%
Percentage of awards subject to ROATCE		50.00%
vesting
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period		3 years
performance period
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period		3 years
ROAA and ROATCE
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period		3 years
Restricted Share Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-option awards vested, total fair value		$ 19.8	$ 13.4	$ 11.2
Minimum | Market/Performance Share Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting range based on return on average assets (ROAA)		75.00%
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		0.00%
Maximum | Market/Performance Share Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting range based on return on average assets (ROAA)		125.00%
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		150.00%
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

Share-based Compensation and _4

Share-based Compensation and Other Employment Benefit Plans - Expenses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
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	$ 26,957	$ 17,827	$ 19,618
Merger-related expense
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total share-based compensation expense included in non-interest expense	0	0	4,219
Other operating expense
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total share-based compensation expense included in non-interest expense	838	814	650
Non-interest expense
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total share-based compensation expense included in non-interest expense	$ 27,795	$ 18,641	$ 24,487

Share-based Compensation and _5

Share-based Compensation and Other Employment Benefit Plans - Fair Value Assumptions Options (Details) - FCB Financial Holdings, Inc. - Stock Options	12 Months Ended
	Dec. 31, 2019$ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock price (in dollars per share)	$ 31.99
Weighted average fair value of converted stock options (in dollars per share)	$ 11.50
Risk-free interest rate	2.51%
Expected stock price volatility	26.40%
Dividend yield	3.13%
Term to expiration	5 years 1 month 6 days

Share-based Compensation and _6

Share-based Compensation and Other Employment Benefit Plans - Stock Options (Details) - $ / shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Quantity
Outstanding at beginning of year (in shares)	2,401,000	3,037,000	640,000
Assumed in acquisition (in shares)	0	0	3,230,000
Options exercised (in shares)	(923,000)	(572,000)	(820,000)
Options expired/canceled (in shares)	0	(64,000)	(13,000)
Options outstanding at end of year (in shares)	1,478,000	2,401,000	3,037,000
Options exercisable at end of year (in shares)	1,478,000	2,401,000	2,399,000
Weighted-Average Exercise Price
Outstanding at beginning of year (in dollars per share)	$ 22.47	$ 22.74	$ 16.93
Assumed in acquisition (in dollars per share)	0	0	23.22
Options exercised (in dollars per share)	22.07	22.67	19.91
Options expired (in dollars per share)	0	33.50	34.23
Options outstanding at end of year (in dollars per share)	22.71	22.47	22.74
Options exercisable at end of year (in dollars per share)	$ 22.71	$ 22.47	$ 19.52

Share-based Compensation and _7

Share-based Compensation and Other Employment Benefit Plans - Fair Value Assumptions-RSUs (Details) - Restricted Share Units	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate	2.87%	1.42%	2.40%
Expected stock price volatility	56.10%	25.40%	24.40%
Simulation period	2 years 10 months 24 days	3 years	3 years

Share-based Compensation and _8

Share-based Compensation and Other Employment Benefit Plans - Restricted Stock Units Activity (Details) - $ / shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Restricted Share Units
Quantity
Outstanding, beginning of period (in shares)	1,221,000	817,000	526,000
Granted (in shares)	599,000	822,000	573,000
Assumed in acquisition (in shares)			136,000
Vested (in shares)	(482,000)	(384,000)	(304,000)
Forfeited (in shares)	(93,000)	(34,000)	(114,000)
Outstanding, end of period (in shares)	1,245,000	1,221,000	817,000
Weighted-Average Grant Date Fair Value
Outstanding, beginning of period, weighted-average grant-date fair value (in dollars per share)	$ 34.50	$ 38.32	$ 41.18
Granted, weighted-average grant-date fair value (in dollars per share)	42.31	32.42	36.27
Assumed in acquisition (in dollars per share)			31.99
Vested, weighted-average grant-date fair value (in dollars per share)	37.05	38.04	37.04
Forfeited, weighted-average grant-date fair value (in dollars per share)	31.41	35.97	37.04
Outstanding, end of period, weighted-average grant-date fair value (in dollars per share)	$ 37	$ 34.50	$ 38.32
Market/Performance Share Units
Quantity
Outstanding, beginning of period (in shares)	439,000	495,000	392,000
Granted (in shares)	141,000	204,000	305,000
Assumed in acquisition (in shares)			0
Vested (in shares)	(58,000)	(214,000)	(152,000)
Forfeited (in shares)	0	(46,000)	(50,000)
Outstanding, end of period (in shares)	522,000	439,000	495,000
Weighted-Average Grant Date Fair Value
Outstanding, beginning of period, weighted-average grant-date fair value (in dollars per share)	$ 39.37	$ 40.85	$ 39.62
Granted, weighted-average grant-date fair value (in dollars per share)	42.94	37.74	37.22
Assumed in acquisition (in dollars per share)			0
Vested, weighted-average grant-date fair value (in dollars per share)	42.43	41.31	30.87
Forfeited, weighted-average grant-date fair value (in dollars per share)	0	39.03	39.45
Outstanding, end of period, weighted-average grant-date fair value (in dollars per share)	$ 37.59	$ 39.37	$ 40.85

Share-based Compensation and _9

Share-based Compensation and Other Employment Benefit Plans - Other Employee Benefit Plans (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Share-based Payment Arrangement [Abstract]
Employer matching contribution, percent	100.00%	100.00%	100.00%
401(k) percent of match	5.00%	5.00%	5.00%
Annual contribution	$ 21.5	$ 21.3	$ 18.8
Stock purchase plan, percent of match	15.00%	15.00%	15.00%
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, 2021	Dec. 31, 2020	Dec. 31, 2019
Current
Federal	$ 153,911	$ 187,741	$ 112,517
State	29,982	9,421	2,085
Total current income tax expense	183,893	197,162	114,602
Deferred
Federal	28,873	(90,777)	46,182
State	16,127	4,585	40,451
Total deferred income tax expense (benefit)	45,000	(86,192)	86,633
Total income tax expense	$ 228,893	$ 110,970	$ 201,235

Income Taxes - Effective Income

Income Taxes - Effective Income Tax Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Income tax expense at statutory federal income tax rate	$ 207,765	$ 101,779	$ 160,653
State income tax expense, net of federal income tax benefit	38,452	11,168	33,764
Income not subject to tax	(10,455)	(9,207)	(6,564)
Low income housing tax credits and other tax benefits, net of amortization	(4,858)	(2,611)	(1,583)
FDIC premiums	4,111	4,744	5,802
General business tax credits	(3,727)	(657)	(678)
Excess tax benefit from share-based compensation	(3,084)	311	(1,337)
Executive compensation	1,096	1,501	6,385
Goodwill impairment	0	9,424	0
Other, net	(407)	(5,482)	4,793
Total income tax expense	$ 228,893	$ 110,970	$ 201,235
Effective tax rate	23.10%	22.90%	26.30%

Income Taxes - Deferred Tax Ass

Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Deferred income tax assets
Allowance for loan losses	$ 112,180	$ 165,691
Lease liability	102,412	98,340
Employee benefits and deferred compensation	35,782	27,917
Net operating loss carryforwards	23,897	29,684
Net unrealized losses on investment securities available for sale and cash flow hedges	19,261	0
Deferred revenue	18,487	24,751
Tax credit carryforwards	15,870	8,605
Fair value of investment securities and loans	6,439	10,093
Non-performing loan interest	2,621	12,472
Other	7,100	9,819
Deferred Tax Asset, Before Valuation Allowance	344,049	387,372
Less valuation allowance	(19,003)	(19,191)
Total deferred tax assets	325,046	368,181
Deferred tax liabilities
Right-of-use asset	(98,773)	(98,681)
Excess tax over financial statement depreciation	(27,355)	(40,452)
Purchase accounting intangibles	(14,820)	(14,458)
Other properties held for sale	(5,345)	(3,025)
Prepaid expense	(4,631)	(5,955)
Net unrealized gains on investment securities available for sale and cash flow hedges	0	(64,344)
Other	(5,071)	(10,418)
Total gross deferred tax liabilities	(155,995)	(237,333)
Net deferred tax assets	$ 169,051	$ 130,848

Income Taxes - Narrative (Detai

Income Taxes - Narrative (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Income Tax Contingency [Line Items]
Valuation allowance	$ 19,003	$ 19,191
Federal and State
Income Tax Contingency [Line Items]
Deferred tax assets, subject to expiration	23,900
State
Income Tax Contingency [Line Items]
Tax credit carryforward, amount	$ 15,900

Income Taxes - Tax Carryforward

Income Taxes - Tax Carryforwards (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Operating Loss Carryforwards [Line Items]
Deferred Tax Asset, Before Valuation Allowance	$ 344,049	$ 387,372
Valuation Allowance	(19,003)	(19,191)
Total deferred tax assets	325,046	$ 368,181
Federal | Net Operating Loss | 2027-2033
Operating Loss Carryforwards [Line Items]
Deferred Tax Asset, Before Valuation Allowance	19,592
Valuation Allowance	(15,851)
Total deferred tax assets	3,741
State | Net Operating Loss | 2023-2034
Operating Loss Carryforwards [Line Items]
Deferred Tax Asset, Before Valuation Allowance	4,305
Valuation Allowance	(3,152)
Total deferred tax assets	1,153
State | Other Credits | 2022-2031
Operating Loss Carryforwards [Line Items]
Deferred Tax Asset, Before Valuation Allowance	15,870
Valuation Allowance	0
Total deferred tax assets	$ 15,870

Income Taxes - Unrecognized Tax

Income Taxes - Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Reconciliation of Unrecognized Income Tax Benefits
Balance at January 1,	$ 20,250	$ 20,994	$ 18,586
Additions based on income tax positions related to current year	3,754	461	550
Additions for income tax positions of prior years	1,379	147	0
Additions from acquisition	0	0	3,464
Reductions for income tax positions of prior years	(200)	(327)	(1,589)
Statute of limitation expirations	(79)	(820)	(17)
Settlements	0	(205)	0
Balance at December 31,	25,104	20,250	20,994
Unrecognized tax benefits, income tax penalties and interest accrued	3,300	2,700	3,300
Unrecognized tax benefits that would impact effective tax rate	23,500	$ 19,100	$ 20,400
Approximate range of uncertain income tax positions expected to be settled or resolved during the next 12 months, minimum	$ 2,300

Segment Reporting - Narrative (

Segment Reporting - Narrative (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2021USD ($)segment	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | segment	3
Investment securities gains (losses), net	$ (799)	$ 78,931	$ (7,659)
Goodwill impairment	0	44,877	$ 0
Treasury and Corporate Other
Segment Reporting Information [Line Items]
PPP fees	79,200	46,000
Increase in PPP fees	$ 33,200
Operating Segments | Consumer Mortgage Reporting Unit
Segment Reporting Information [Line Items]
Goodwill impairment		$ 44,900

Segment Reporting (Details)

Segment Reporting (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2021USD ($)employee	Dec. 31, 2020USD ($)employee	Dec. 31, 2019USD ($)
Income Statement Related Disclosures
Net interest income	$ 1,532,947	$ 1,512,748	$ 1,595,803
Non-interest revenue	450,066	506,513	355,900
Non-interest expense	1,099,904	1,179,574	1,098,968
Pre-provision net revenue	883,109	839,687
Balance Sheet Related Disclosures
Loans, net of deferred fees and costs	39,311,958	38,252,984
Deposits	$ 49,427,276	$ 46,691,571
Full-time equivalent employees | employee	4,887	5,134
Operating Segments | Community Banking
Income Statement Related Disclosures
Net interest income	$ 808,700	$ 854,021
Non-interest revenue	128,026	111,256
Non-interest expense	290,817	297,071
Pre-provision net revenue	645,909	668,206
Balance Sheet Related Disclosures
Loans, net of deferred fees and costs	10,791,343	11,171,055
Deposits	$ 32,226,477	$ 29,141,242
Full-time equivalent employees | employee	2,139	2,296
Operating Segments | Wholesale Banking
Income Statement Related Disclosures
Net interest income	$ 557,943	$ 548,152
Non-interest revenue	34,590	26,379
Non-interest expense	90,074	85,250
Pre-provision net revenue	502,459	489,281
Balance Sheet Related Disclosures
Loans, net of deferred fees and costs	21,496,050	18,810,729
Deposits	$ 12,370,554	$ 11,958,105
Full-time equivalent employees | employee	284	285
Operating Segments | Financial Management Services
Income Statement Related Disclosures
Net interest income	$ 79,173	$ 79,362
Non-interest revenue	211,002	224,620
Non-interest expense	184,257	232,222
Pre-provision net revenue	105,918	71,760
Balance Sheet Related Disclosures
Loans, net of deferred fees and costs	4,994,494	5,370,748
Deposits	$ 826,639	$ 739,200
Full-time equivalent employees | employee	794	835
Treasury and Corporate Other
Income Statement Related Disclosures
Net interest income	$ 87,131	$ 31,213
Non-interest revenue	76,448	144,258
Non-interest expense	534,756	565,031
Pre-provision net revenue	(371,177)	(389,560)
Balance Sheet Related Disclosures
Loans, net of deferred fees and costs	2,030,071	2,900,452
Deposits	$ 4,003,606	$ 4,853,024
Full-time equivalent employees | employee	1,670	1,718
Pro Forma
Income Statement Related Disclosures
Net interest income			1,595,803
Non-interest revenue			355,900
Non-interest expense			1,098,968
Pre-provision net revenue			852,735
Pro Forma | Operating Segments | Community Banking
Income Statement Related Disclosures
Net interest income			825,219
Non-interest revenue			136,657
Non-interest expense			302,327
Pre-provision net revenue			659,549
Pro Forma | Operating Segments | Wholesale Banking
Income Statement Related Disclosures
Net interest income			518,033
Non-interest revenue			28,948
Non-interest expense			71,393
Pre-provision net revenue			475,588
Pro Forma | Operating Segments | Financial Management Services
Income Statement Related Disclosures
Net interest income			112,431
Non-interest revenue			154,166
Non-interest expense			152,115
Pre-provision net revenue			114,482
Pro Forma | Treasury and Corporate Other
Income Statement Related Disclosures
Net interest income			140,120
Non-interest revenue			36,129
Non-interest expense			573,133
Pre-provision net revenue			$ (396,884)

Condensed Financial Informati_3

Condensed Financial Information Of Synovus Financial Corp. (Parent Company Only) - Condensed Balance Sheets (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Jan. 01, 2020	Dec. 31, 2019	Dec. 31, 2018
ASSETS
Cash due from bank subsidiary	$ 432,925	$ 531,579
Total cash, cash equivalents, and restricted cash	3,009,853	4,252,917		$ 1,186,918	$ 1,143,564
Other assets	1,790,198	1,760,599
Total assets	57,317,226	54,394,159
Liabilities and Shareholders' Equity
Long-term debt	1,204,229	1,202,494
Other liabilities	1,124,788	1,110,838
Total liabilities	52,020,426	49,232,825
Shareholders’ equity:
Preferred stock	537,145	537,145
Common stock	169,384	168,133
Additional paid-in capital	3,894,109	3,851,208
Treasury stock	(931,497)	(731,806)
Accumulated other comprehensive income (loss), net	(82,321)	158,635
Retained earnings	1,709,980	1,178,019	$ 1,068,327
Total shareholders’ equity	5,296,800	5,161,334		4,941,690	3,133,602
Total liabilities and shareholders' equity	57,317,226	54,394,159
Parent Company
ASSETS
Cash due from bank subsidiary	389,071	439,352
Funds due from other depository institutions	9,277	9,277
Total cash, cash equivalents, and restricted cash	398,348	448,629		$ 374,388	$ 223,023
Investment in consolidated bank subsidiary, at equity	5,381,311	5,239,849
Investment in consolidated nonbank subsidiaries, at equity	69,712	46,271
Note receivable from bank subsidiary	100,000	100,000
Other assets	25,538	16,975
Total assets	5,974,909	5,851,724
Liabilities and Shareholders' Equity
Long-term debt	607,334	606,406
Other liabilities	70,775	83,984
Total liabilities	678,109	690,390
Shareholders’ equity:
Preferred stock	537,145	537,145
Common stock	169,384	168,133
Additional paid-in capital	3,894,109	3,851,208
Treasury stock	(931,497)	(731,806)
Accumulated other comprehensive income (loss), net	(82,321)	158,635
Retained earnings	1,709,980	1,178,019
Total shareholders’ equity	5,296,800	5,161,334
Total liabilities and shareholders' equity	$ 5,974,909	$ 5,851,724

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, 2021	Dec. 31, 2020	Dec. 31, 2019
Expense
Interest expense	$ 120,396	$ 291,747	$ 454,835
Other expense	1,099,904	1,179,574	1,098,968
Net income	760,467	373,695	563,780
Less: Preferred stock dividends	33,163	33,163	22,881
Net income available to common shareholders	727,304	340,532	540,899
Parent Company
Income
Cash dividends received from subsidiaries	420,000	547,500	400,000
Interest income	777	3,341	5,920
Other income (loss)	1,070	4,966	11,590
Total income	421,847	555,807	417,510
Expense
Interest expense	27,616	42,911	41,328
Other expense	10,300	10,584	13,528
Total expense	37,916	53,495	54,856
Income before income taxes and equity in undistributed income of subsidiaries	383,931	502,312	362,654
Allocated income tax benefit	(7,834)	(12,202)	(9,753)
Income before equity in undistributed income of subsidiaries	391,765	514,514	372,407
Equity in undistributed income (loss) of subsidiaries	368,702	(140,819)	191,373
Net income	760,467	373,695	563,780
Less: Preferred stock dividends	33,163	33,163	22,881
Net income available to common shareholders	$ 727,304	$ 340,532	$ 540,899

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, 2021	Dec. 31, 2020	Dec. 31, 2019
Condensed Financial Statements, Captions [Line Items]
Net income, income tax	$ (228,893)	$ (110,970)	$ (201,235)
Net income	760,467	373,695	563,780
Reclassification adjustment for net losses (gains) realized in net income on investment securities available for sale, before-tax amount	799	(78,931)	7,659
Reclassification adjustment for net losses (gains) realized in net income on investment securities available for sale, income tax	(202)	20,443	(1,984)
Reclassification adjustment for realized (gains) losses included in net income	597	(58,488)	5,675
Other comprehensive income (loss), before-tax amount	(324,561)	125,505	216,010
Other comprehensive income (loss), income tax	83,605	(32,511)	(55,949)
Net current period other comprehensive income (loss)	(240,956)	92,994	160,061
Comprehensive income	519,511	466,689	723,841
Parent Company
Condensed Financial Statements, Captions [Line Items]
Net income, before-tax amount	989,360	484,665	765,015
Net income, income tax	(228,893)	(110,970)	(201,235)
Net income	760,467	373,695	563,780
Reclassification adjustment for net losses (gains) realized in net income on investment securities available for sale, before-tax amount	0	0	(22)
Reclassification adjustment for net losses (gains) realized in net income on investment securities available for sale, income tax	0	0	6
Reclassification adjustment for realized (gains) losses included in net income	0	0	(16)
Other comprehensive (loss) gain of bank subsidiary, before-tax amount	(324,561)	125,505	216,032
Other comprehensive (loss) gain of bank subsidiary, income tax	83,605	(32,511)	(55,955)
Other comprehensive (loss) gain of bank subsidiary, net of tax amount	(240,956)	92,994	160,077
Other comprehensive income (loss), before-tax amount	(324,561)	125,505	216,010
Other comprehensive income (loss), income tax	83,605	(32,511)	(55,949)
Net current period other comprehensive income (loss)	(240,956)	92,994	160,061
Comprehensive income	$ 519,511	$ 466,689	$ 723,841

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, 2021	Dec. 31, 2020	Dec. 31, 2019
Operating Activities
Net income	$ 760,467	$ 373,695	$ 563,780
Adjustments to reconcile net income to net cash provided by operating activities:
Other	0	55,343	4,592
Net cash provided by operating activities	794,016	17,032	621,050
Investing Activities
Proceeds from sales of investment securities available for sale	565,400	2,649,686	2,923,787
Net cash used in investing activities	(4,384,166)	(2,352,973)	(2,153,862)
Financing Activities
Repurchase of common stock	(199,932)	(16,246)	(725,398)
Repayments and redemption of long-term debt	0	(2,408,939)	(157,226)
Proceeds from issuance of long-term debt, net	0	1,445,492	497,045
Proceeds from issuance of preferred stock, net	0	0	342,005
Other	(8,624)	(1,552)	(1,947)
Net cash provided by financing activities	2,347,086	5,401,940	1,576,166
Increase (decrease) in cash and cash equivalents including restricted cash	(1,243,064)	3,065,999	43,354
Cash, cash equivalents, and restricted cash at beginning of year	4,252,917	1,186,918	1,143,564
Cash, cash equivalents, and restricted cash at end of year	3,009,853	4,252,917	1,186,918
Income taxes paid	204,214	110,828	101,781
Interest paid	132,923	319,282	464,712
Parent Company
Operating Activities
Net income	760,467	373,695	563,780
Adjustments to reconcile net income to net cash provided by operating activities:
Equity in undistributed (income) loss of subsidiaries	(368,702)	140,819	(191,373)
Deferred income tax expense (benefit)	(7,296)	3,962	1,775
Net increase (decrease) in other liabilities	(2,082)	11,243	43,617
Net decrease in other assets	5,280	17,441	3,367
Other	928	(5,132)	1,037
Net cash provided by operating activities	388,595	542,028	422,203
Investing Activities
Proceeds from sales of investment securities available for sale	0	0	97,389
Advance of long-term note receivable due from bank subsidiary	0	0	(100,000)
Return of investment non-bank subsidiary	0	0	790
Proceeds from sales of equity securities	0	23,141	0
Increase in other investments	(10,000)	0	0
Net cash received in business combination, net of cash paid	0	0	4,813
Net cash used in investing activities	(10,000)	23,141	2,992
Financing Activities
Dividends paid to common and preferred shareholders	(227,840)	(223,130)	(185,664)
Repurchase of common stock	(199,932)	(16,246)	(725,398)
Repayments and redemption of long-term debt	0	(250,000)	0
Proceeds from issuance of long-term debt, net	0	0	297,174
Proceeds from issuance of preferred stock, net	0	0	342,005
Other	(1,104)	(1,552)	(1,947)
Net cash provided by financing activities	(428,876)	(490,928)	(273,830)
Increase (decrease) in cash and cash equivalents including restricted cash	(50,281)	74,241	151,365
Cash, cash equivalents, and restricted cash at beginning of year	448,629	374,388	223,023
Cash, cash equivalents, and restricted cash at end of year	398,348	448,629	374,388
Income taxes paid	203,200	119,100	101,600
Interest paid	$ 27,300	$ 42,000	$ 33,100

Subsequent Event (Details)

Subsequent Event (Details) - USD ($)	Feb. 10, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Subsequent Event [Line Items]
Repayments of long-term debt, net		$ 0	$ 2,408,939,000	$ 157,226,000
Subsequent Event | 2.289% Fixed-to-Floating Rate Senior Bank Notes due 2023 | Synovus Bank
Subsequent Event [Line Items]
Stated percentage	2.289%
Debt, face amount	$ 400,000,000
Repayments of long-term debt, net	405,300,000
Repayments of long-term debt, principal	400,000,000
Repayments of long-term debt, interest	4,600,000
Write off debt issuance cost	$ 675,000