Synovus Financial (SNV) 10-Q 2 Aug 19 2019 Q2 Quarterly report Financial data

Cover Page

Cover Page - shares	6 Months Ended
	Jun. 30, 2019	Jul. 31, 2019
Entity Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Transition Report	false
Document Period End Date	Jun. 30, 2019
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	649-2311
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		154,320,484
Entity Central Index Key	0000018349
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q2
Amendment Flag	false
Common Stock
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

CONSOLIDATED BALANCE SHEETS (un

CONSOLIDATED BALANCE SHEETS (unaudited) - USD ($) $ in Thousands		Jun. 30, 2019	Dec. 31, 2018
ASSETS
Cash and due from banks		$ 549,616	$ 468,426
Interest-bearing funds with Federal Reserve Bank		531,488	641,476
Interest earning deposits with banks		20,271	19,841
Federal funds sold and securities purchased under resale agreements		49,946	13,821
Total cash, cash equivalents, restricted cash, and restricted cash equivalents	[1]	1,151,321	1,143,564
Investment securities available for sale, at fair value		7,007,012	3,991,632
Mortgage loans held for sale, at fair value		81,855	37,129
Loans		36,138,561	25,946,573
Allowance for loan losses		(257,376)	(250,555)
Loans, net		35,881,185	25,696,018
Cash surrender value of bank-owned life insurance		766,287	554,134
Premises and equipment, net		490,644	434,307
Goodwill		492,390	57,315
Other intangible assets		61,473	9,875
Other assets		1,386,036	745,218
Total assets		47,318,203	32,669,192
Deposits:
Non-interest-bearing deposits		9,205,066	7,650,967
Interest-bearing deposits		28,761,656	19,069,355
Total deposits		37,966,722	26,720,322
Federal funds purchased and securities sold under repurchase agreements		273,481	237,692
Other short-term borrowings		1,330,000	650,000
Long-term debt		2,306,072	1,657,157
Other liabilities		688,112	270,419
Total liabilities		42,564,387	29,535,590
Shareholders' Equity
Series D Preferred Stock – no par value. Authorized 100,000,000 shares; 8,000,000 shares issued and outstanding at June 30, 2019 and December 31, 2018		195,140	195,140
Common stock - $1.00 par value. Authorized 342,857,143 shares; 166,079,543 issued at June 30, 2019 and 143,300,449 issued at December 31, 2018; 156,872,026 outstanding at June 30, 2019 and 115,865,510 outstanding at December 31, 2018		166,080	143,300
Additional paid-in capital		3,801,748	3,060,561
Treasury stock, at cost – 9,207,517 shares at June 30, 2019 and 27,434,939 shares at December 31, 2018		(344,901)	(1,014,746)
Accumulated other comprehensive income (loss), net		49,289	(94,420)
Retained earnings		886,460	843,767
Total shareholders’ equity		4,753,816	3,133,602
Total liabilities and shareholders' equity		$ 47,318,203	$ 32,669,192
[1]	Where applicable, changes for balances as of June 30, 2019, compared to December 31, 2018, exclude amounts acquired on the Acquisition Date. See accompanying notes to unaudited interim consolidated financial statements.

CONSOLIDATED BALANCE SHEETS (_2

CONSOLIDATED BALANCE SHEETS (unaudited) (Parenthetical) - $ / shares	Jun. 30, 2019	Dec. 31, 2018
Statement of Financial Position [Abstract]
Preferred Stock, shares authorized (in shares)	100,000,000	100,000,000
Preferred Stock, shares issued (in shares)	8,000,000	8,000,000
Preferred stock, shares outstanding (in shares)	8,000,000	8,000,000
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)	166,079,543	143,300,449
Common stock, shares outstanding (in shares)	156,872,026	115,865,510
Treasury stock, shares at cost (in shares)	9,207,517	27,434,939

CONSOLIDATED STATEMENTS OF INCO

CONSOLIDATED STATEMENTS OF INCOME (unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019		Jun. 30, 2018
Interest income:
Loans, including fees	$ 457,564	$ 300,056	$ 905,333		$ 585,396
Investment securities available for sale	52,794	23,884	102,732		47,812
Mortgage loans held for sale	752	557	1,143		936
Federal Reserve Bank balances	2,701	2,818	6,371		4,568
Other earning assets	2,320	2,519	5,391		4,256
Total interest income	516,131	329,834	1,020,970		642,968
Interest expense:
Deposits	92,700	32,600	180,383		58,975
Federal funds purchased, securities sold under repurchase agreements, and other short-term borrowings	7,294	203	10,757		310
Long-term debt	18,875	12,454	35,392		24,822
Total interest expense	118,869	45,257	226,532		84,107
Net interest income	397,262	284,577	794,438		558,861
Provision for loan losses	12,119	11,790	35,688	[1]	24,566
Net interest income after provision for loan losses	385,143	272,787	758,750		534,295
Non-interest income:
Capital markets income	8,385	1,118	13,291		2,086
Income from bank-owned life insurance	5,176	3,733	10,466		7,949
Investment securities losses, net	(1,845)	(1,296)	(1,771)		(1,296)
Other non-interest income	12,499	11,469	21,859		16,333
Total non-interest income	89,807	73,387	169,185		140,433
Non-interest expense:
Salaries and other personnel expense	143,009	111,863	282,436		225,583
Net occupancy and equipment expense	39,851	32,654	78,245		64,134
Third-party processing expense	19,118	15,067	36,875		29,012
Professional fees	9,312	6,284	15,660		11,789
FDIC insurance and other regulatory fees	7,867	6,543	14,629		13,335
Advertising expense	5,923	5,220	11,045		10,312
Amortization of intangibles	2,410	292	5,802		583
Merger-related expense	7,401	0	57,140		0
Other operating expenses	29,235	26,134	54,705		44,486
Total non-interest expense	264,126	204,057	556,537		399,234
Income before income taxes	210,824	142,117	371,398		275,494
Income tax expense	54,640	30,936	95,028		61,146
Net income	156,184	111,181	276,370	[1]	214,348
Less: Preferred stock dividends	3,150	2,559	6,300		5,119
Net income available to common shareholders	$ 153,034	$ 108,622	$ 270,070		$ 209,229
Net income per common share, basic (in dollars per share)	$ 0.97	$ 0.92	$ 1.70		$ 1.77
Net income per common share, diluted (in dollars per share)	$ 0.96	$ 0.91	$ 1.68		$ 1.75
Weighted average common shares outstanding, basic (in shares)	157,389	118,397	159,148		118,531
Weighted average common shares outstanding, diluted (in shares)	159,077	119,139	160,908		119,229
Service charges on deposit accounts
Non-interest income:
Revenue from contract with customers	$ 21,994	$ 19,999	$ 42,853		$ 39,938
Fiduciary and asset management fees
Non-interest income:
Revenue from contract with customers	14,478	13,983	28,057		27,419
Card fees
Non-interest income:
Revenue from contract with customers	11,161	10,833	22,037		21,032
Brokerage revenue
Non-interest income:
Revenue from contract with customers	10,052	8,709	19,431		17,085
Mortgage banking income
Non-interest income:
Revenue from contract with customers	$ 7,907	$ 4,839	$ 12,962		$ 9,887
[1]	Where applicable, changes for balances as of June 30, 2019, compared to December 31, 2018, exclude amounts acquired on the Acquisition Date. See accompanying notes to unaudited interim consolidated financial statements.

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019		Jun. 30, 2018
Statement of Comprehensive Income [Abstract]
Net income, Before-tax Amount	$ 210,824	$ 142,117	$ 371,398		$ 275,494
Net income, Tax Effect	(54,640)	(30,936)	(95,028)		(61,146)
Net income	156,184	111,181	276,370	[1]	214,348
Net unrealized gains (losses) on investment securities available for sale: Before-tax Amount
Reclassification adjustment for net losses realized in net income, Before-tax Amount	1,845	1,296	1,771		1,296
Net unrealized gains (losses) arising during the period, Before-tax Amount	89,459	(25,476)	192,241		(86,921)
Net unrealized gains (losses), Before-tax Amount	91,304	(24,180)	194,012		(85,625)
Net unrealized gains on investment securities available for sale: Tax Effect
Reclassification adjustment for net losses realized in net income, Tax Effect	(478)	(336)	(459)		(336)
Net unrealized gains (losses) arising during the period, Tax Effect	(23,169)	6,598	(49,788)		22,512
Net unrealized gains (losses), Tax Effect	(23,647)	6,262	(50,247)		22,176
Net unrealized gains on investment securities available for sale: Net of Tax Amount
Reclassification adjustment for net losses realized in net income, Net of Tax Amount	1,367	960	1,312		960
Net unrealized gains (losses) arising during the period, Net of Tax Amount	66,290	(18,878)	142,453		(64,409)
Net unrealized gains (losses), Net of Tax Amount	67,657	(17,918)	143,765		(63,449)
Post-retirement unfunded health benefit: Before-tax Amount
Reclassification adjustment for gains realized in net income, Before-tax Amount	(35)	(34)	(70)		(68)
Post-retirement unfunded health benefit: Tax Effect
Reclassification adjustment for gains realized in net income, Tax Effect	9	9	14		22
Post-retirement unfunded health benefit: Net of Tax Amount
Reclassification adjustment for gains realized in net income, Net of Tax Amount	(26)	(25)	(56)		(46)
Other comprehensive income (loss), Before-tax Amount	91,269	(24,214)	193,942		(85,693)
Other comprehensive income (loss), Tax Effect	(23,638)	6,271	(50,233)		22,198
Other comprehensive income (loss), Net of Tax Amount	67,631	(17,943)	143,709		(63,495)
Comprehensive income, Net of Tax Amount	$ 223,815	$ 93,238	$ 420,079		$ 150,853
[1]	Where applicable, changes for balances as of June 30, 2019, compared to December 31, 2018, exclude amounts acquired on the Acquisition Date. See accompanying notes to unaudited interim consolidated financial statements.

CONSOLIDATED STATEMENTS OF CHAN

CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (unaudited) - USD ($) $ in Thousands	Total		Series C Preferred Stock	Series D Preferred Stock	Preferred StockSeries C Preferred Stock	Preferred StockSeries D Preferred Stock	Common Stock	Additional Paid-in Capital	Treasury Stock	Accumulated Other Comprehensive Income (Loss)	Retained Earnings	Retained EarningsSeries C Preferred Stock	Retained EarningsSeries D Preferred Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Adoption of ASU | ASU 2014-09	$ (685)										$ (685)
Adoption of ASU | ASU 2018-02	0									$ (7,588)	7,588
Adoption of ASU | ASU 2016-01	0									117	(117)
Balance at Dec. 31, 2017	2,961,566				$ 125,980	$ 0	$ 142,678	$ 3,043,129	$ (839,674)	(54,754)	544,207
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	214,348										214,348
Other comprehensive income (loss), net of income taxes	(63,495)									(63,495)
Cash dividends declared on common stock	(59,185)										(59,185)
Cash dividends paid on Preferred Stock	(5,119)										(5,119)
Issuance of Series D Preferred Stock, net of issuance costs	195,138					195,138
Repurchases of common stock including costs to repurchase	(76,810)								(76,810)
Restricted share unit vesting and taxes paid related to net share settlement	(8,280)						289	(8,220)			(349)
Stock options exercised	1,896						111	1,785
Share-based compensation expense	8,320							8,320
Balance at Jun. 30, 2018	3,167,694				125,980	195,138	143,078	3,045,014	(916,484)	(125,720)	700,688
Balance at Mar. 31, 2018	2,956,495				125,980	0	143,017	3,039,757	(866,407)	(107,777)	621,925
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	111,181										111,181
Other comprehensive income (loss), net of income taxes	(17,943)									(17,943)
Cash dividends declared on common stock	(29,510)										(29,510)
Cash dividends paid on Preferred Stock			$ (2,559)									$ (2,559)
Issuance of Series D Preferred Stock, net of issuance costs	195,138					195,138
Repurchases of common stock including costs to repurchase	(50,077)								(50,077)
Restricted share unit vesting and taxes paid related to net share settlement	(52)						23	274			(349)
Stock options exercised	656						38	618
Share-based compensation expense	4,365							4,365
Balance at Jun. 30, 2018	3,167,694				125,980	195,138	143,078	3,045,014	(916,484)	(125,720)	700,688
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Adoption of ASU	4,270										4,270
Balance at Dec. 31, 2018	3,133,602				0	195,140	143,300	3,060,561	(1,014,746)	(94,420)	843,767
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	276,370	[1]									276,370
Other comprehensive income (loss), net of income taxes	143,709									143,709
Issuance of common stock, net of issuance costs	704,146						22,043	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			$ (94,471)									$ (94,471)
Cash dividends paid on Preferred Stock				$ (6,300)									$ (6,300)
Repurchases of common stock including costs to repurchase	(345,170)								(345,170)
Restricted share unit vesting and taxes paid related to net share settlement	(8,643)						285	(8,928)			0
Stock options/warrants exercised, net	8,536						452	7,815	269
Share-based compensation expense	16,225							16,225
Balance at Jun. 30, 2019	4,753,816				0	195,140	166,080	3,801,748	(344,901)	49,289	886,460
Balance at Mar. 31, 2019	4,597,753				0	195,140	165,929	3,794,262	(319,898)	(18,342)	780,662
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	156,184										156,184
Other comprehensive income (loss), net of income taxes	67,631									67,631
Cash dividends declared on common stock	(47,236)										(47,236)
Cash dividends paid on Preferred Stock				$ (3,150)									$ (3,150)
Repurchases of common stock including costs to repurchase	(25,003)								(25,003)
Restricted share unit vesting and taxes paid related to net share settlement	(231)						50	(281)
Stock options/warrants exercised, net	1,887						101	1,786
Share-based compensation expense	5,981							5,981
Balance at Jun. 30, 2019	$ 4,753,816				$ 0	$ 195,140	$ 166,080	$ 3,801,748	$ (344,901)	$ 49,289	$ 886,460
[1]	Where applicable, changes for balances as of June 30, 2019, compared to December 31, 2018, exclude amounts acquired on the Acquisition Date. See accompanying notes to unaudited interim consolidated financial statements.

CONSOLIDATED STATEMENTS OF CH_2

CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (unaudited) (Parenthetical) - $ / shares	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Statement of Stockholders' Equity [Abstract]
Cash dividends declared on common stock (USD per share)	$ 0.30	$ 0.25	$ 0.60	$ 0.50
Series D Preferred Stock
Cash dividends declared on preferred stock (USD per share)	$ 0.39	$ 0.49	$ 0.78	$ 0.98

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS (unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019		Jun. 30, 2018
Operating Activities
Net income	$ 276,370	[1]	$ 214,348
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan losses	35,688	[1]	24,566
Depreciation, amortization, and accretion, net	11,446	[1]	28,661
Deferred income tax expense	27,539	[1]	5,222
Originations of mortgage loans held for sale	(325,109)	[1]	(286,070)
Proceeds from sales of mortgage loans held for sale	287,648	[1]	287,175
Gain on sales of mortgage loans held for sale, net	(8,286)	[1]	(6,198)
Increase in other assets	(22,191)	[1]	(54,639)
(Decrease) increase in other liabilities	(45,265)	[1]	8,292
Investment securities losses, net	1,771	[1]	1,296
Share-based compensation expense	16,225	[1]	8,320
Net cash provided by operating activities	255,836	[1]	230,973
Investing Activities
Net cash received in business combination, net of cash paid	201,100	[1]	0
Proceeds from maturities and principal collections of investment securities available for sale	444,865	[1]	294,152
Proceeds from sales of investment securities available for sale	1,292,673	[1]	35,066
Purchases of investment securities available for sale	(2,263,383)	[1]	(367,458)
Proceeds from sales of loans	44,229	[1]	13,954
Proceeds from sales of other real estate and other assets	8,255	[1]	6,737
Net increase in loans excluding loans acquired in business combination	(970,160)	[1]	(382,086)
Net (purchases) redemptions of Federal Home Loan Bank stock	(43,775)	[1]	(6,155)
Net (purchases) redemptions of Federal Reserve Bank stock	(24,239)	[1]	8,500
Proceeds from settlements of bank-owned life insurance policies	656	[1]	1,783
Net increase in premises and equipment	(31,767)	[1]	(26,780)
Net cash used in investing activities	(1,341,546)	[1]	(422,287)
Financing Activities
Net increase in deposits	337,552	[1]	294,516
Net increase in federal funds purchased and securities sold under repurchase agreements	6,650	[1]	46,390
Net change in other short-term borrowings	680,000	[1]	0
Repayments and redemption of long-term debt	0	[1]	(2,330,052)
Proceeds from issuance of long-term debt, net	497,045	[1]	2,280,000
Dividends paid to common shareholders	(76,203)	[1]	(47,510)
Dividends paid to preferred shareholders	(6,300)	[1]	(5,119)
Proceeds from issuance of Series D Preferred Stock	0		195,138
Stock options and warrants exercised	8,536	[1]	1,896
Repurchase of common stock	(345,170)	[1]	(76,810)
Taxes paid related to net share settlement of equity awards	(8,643)	[1]	(8,280)
Net cash provided by financing activities	1,093,467	[1]	350,169
Increase in cash and cash equivalents including restricted cash	7,757	[1]	158,855
Cash, cash equivalents, restricted cash, and restricted cash equivalents at beginning of period	1,143,564	[1]	932,933
Cash, cash equivalents, restricted cash, and restricted cash equivalents at end of period	1,151,321	[1]	1,091,788
Supplemental Disclosures:
Income taxes paid (refunded)	62,913	[1]	38,619
Interest paid	221,475	[1]	80,884
Non-cash Activities
Common stock issued, treasury stock reissued, equity awards/warrants exchanged to acquire FCB	1,625,688	[1]	0
Premises and equipment transferred to other assets held for sale	0	[1]	785
Loans foreclosed and transferred to other real estate	7,586	[1]	7,561
Loans transferred to/(from) other loans held for sale at fair value	47,927	[1]	5,233
Subtopic 825-10 equity investment securities available for sale transferred to other assets	0	[1]	3,162
Dividends declared on common stock during the period but paid after period-end	$ 47,236	[1]	$ 29,510
[1]	Where applicable, changes for balances as of June 30, 2019, compared to December 31, 2018, exclude amounts acquired on the Acquisition Date. See accompanying notes to unaudited interim consolidated financial statements.

Basis of Presentation

Basis of Presentation	6 Months Ended
	Jun. 30, 2019
Accounting Policies [Abstract]
Basis of Presentation	Note 1 - Basis of Presentation General The accompanying unaudited interim consolidated financial statements of Synovus Financial Corp. include the accounts of the Parent Company and its consolidated subsidiaries. Synovus Financial Corp. is a financial services company based in Columbus, Georgia. Through its wholly-owned subsidiary, Synovus Bank, a Georgia state-chartered bank that is a member of the Federal Reserve System, the company provides commercial and retail banking in addition to a full suite of specialized products and services including private banking, treasury management, wealth management, premium finance and international banking. Synovus Bank is positioned in markets in the Southeast, with 297 branches and 385 ATMs in Alabama, Florida, Georgia, South Carolina, and Tennessee. The accompanying unaudited interim consolidated financial statements have been prepared in accordance with the instructions to the SEC Form 10-Q and Article 10 of Regulation S-X; therefore, they do not include all information and footnotes necessary for a fair presentation of financial position, results of operations, comprehensive income, and cash flows in conformity with GAAP. All adjustments consisting of normally recurring accruals that, in the opinion of management, are necessary for a fair presentation of the consolidated financial position and results of operations for the periods covered by this Report have been included. The accompanying unaudited interim consolidated financial statements should be read in conjunction with the consolidated financial statements and related notes appearing in Synovus' 2018 Form 10-K . Reclassifications Prior periods' consolidated financial statements are reclassified whenever necessary to conform to the current periods' presentation. Use of Estimates in the Preparation of Financial Statements In preparing the consolidated financial statements in accordance with U.S. 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 revenues and expenses for the periods presented. Actual results could differ significantly from those estimates. Material estimates that are particularly susceptible to change relate to the determination of the allowance for loan losses; estimates of fair value; income taxes; and contingent liabilities including legal matters, among others. Purchased loans Purchased loans are recorded at fair value in accordance with ASC Topic 820, Fair Value Measurement , consistent with the exit price concept on the date of acquisition. Credit risk assumptions and resulting credit discounts are included in the determination of fair value; therefore, no ALL is recorded at the acquisition date. Pursuant to an AICPA letter dated December 18, 2009, the AICPA summarized the SEC staff's view regarding the accounting in subsequent periods for discount accretion associated with loan receivables acquired in a business combination or asset purchase. Regarding the accounting for such loan receivables, in the absence of further standard setting, the AICPA understands the SEC staff would not object to an accounting policy based on contractual cash flows (ASC Topic 310-20, Nonrefundable Fees and Other Costs ) or an accounting policy based on expected cash flows (ASC 310-30, Loans and Debt Securities Acquired with Deteriorated Credit Quality ). Synovus analogizes to ASC Topic 310-30 to account for the fair value discount. Purchased loans are evaluated upon acquisition as following the ASC 310-30 approach or ASC 310-20. Loans meeting the scope exception of ASC 310-30 (e.g. loans with revolving components) are not permitted to be analogized and will be accounted for in accordance with ASC 310-20. For ASC 310-30 loans, expected cash flows at the acquisition date in excess of the fair value of loans are recorded as interest income over the life of the loans using a level yield method if the timing and amount of the future cash flows is reasonably estimable. Subsequent to the acquisition date, increases in cash flows over those expected at the acquisition date are recognized prospectively as interest income. Decreases in expected cash flows due to credit deterioration are recognized by recording an ALL. Loan removals from pools due to pay-off or charge-off are removed at their carrying amount. The difference between the carrying amount and the amount received to satisfy the loan is recorded in interest income. For ASC 310-20 loans, the difference between the fair value and UPB of the loan at the acquisition date is amortized or accreted to interest income over the contractual life of the loans using the effective interest method. In the event of prepayment, the remaining unamortized amount is recognized in interest income in the quarter of prepayment. Due to the significant difference in accounting for ASC 310-30 loans, Synovus believes inclusion of these loans in certain asset quality ratios that reflect non-performing assets in the numerator or denominator (or both) results in significant distortion to these ratios. In addition, because loan level charge-offs related to ASC 310-30 loans are not recognized in the financial statements until the cumulative amounts exceed the original loss projections on a pool basis, the net charge-off ratio is inconsistent with the net charge-off ratio for other loan portfolios. The inclusion of ASC 310-30 loans in certain asset quality ratios could result in a lack of comparability across quarters or years, and could impact comparability with other portfolios that were not impacted by ASC 310-30 accounting. Synovus believes that presenting certain loan and asset quality disclosures separately for ASC 310-20 and ASC 310-30 loans, and/or excluding ASC 310-30 loans, where appropriate and indicated within each table, provides better perspective into underlying trends related to the quality of its loan portfolio. Non-interest Income - Revenue from Contracts with Customers within the scope of ASC Topic 606 Synovus' contracts with customers generally do not contain terms that require significant judgment to determine the amount of revenue to recognize. Synovus' policies for recognizing non-interest income within the scope of ASC Topic 606, 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, non-sufficient funds, 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 customers' 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 customer 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 customers' 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 expenses and network expenses. Brokerage Revenue: Brokerage revenue consists primarily of commissions. Additionally, brokerage revenue includes advisory fees earned from the management of customer assets. 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. 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. Insurance Revenue (included in other non-interest income 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 customer executes an insurance policy with the insurance carrier. In some cases, Synovus receives payment of trailing commissions each year when the customer pays its annual premium. Recently Adopted Accounting Standards ASU 2016-02, Leases (ASC 842) . Synovus adopted ASC 842 prospectively as of January 1, 2019 for existing leasing arrangements. As such, financial information was not updated and the disclosures required under the new standard are not presented for dates and periods prior to January 1, 2019. Refer to the 2018 10-K for lease disclosures surrounding prior period information reported under ASC 840, Leases. For leases that commenced prior to the effective date of ASC 842, Synovus elected the package of practical expedients not to reassess (a) whether existing contracts contain leases, (b) lease classification for existing leases, and (c) initial direct cost for any existing leases as well as the short-term lease recognition exemption for all leases that qualify. Additionally, Synovus did not elect the practical expedient to combine lease and non-lease components for all of our leases. Adoption of the new standard resulted in the recording of ROU assets and lease liabilities of $381.1 million and $391.0 million , respectively, as of January 1, 2019. These amounts were based on the present value of the remaining rental payments for existing leases and include consideration for renewal and termination options available that we were reasonably certain of exercising. The difference between the asset and liability balance is primarily the result of lease liabilities that existed prior to adoption of the new guidance. The adoption of the standard also resulted in a cumulative-effect adjustment, net of income taxes, to the beginning balance of retained earnings of $4.3 million ( $3.9 million of which consisted of deferred gains associated with sale-leaseback transactions that previously did not qualify for recognition). The ROU assets are included in other assets (other than $4.0 million of finance leases included in premises and equipment) on the consolidated balance sheet and the lease liabilities are included in other liabilities. Adoption of the standard did not materially impact our consolidated statements of income and had no impact on cash flows. Synovus determines if an arrangement is a lease at inception in accordance with ASC 842-10-15-3 and classifies leases as either operating or financing from a lessee perspective and operating or direct financing and sales-type from a lessor perspective based on criteria that are largely similar to those applied under ASC 840, Leases , but without explicit bright lines. ROU assets and lease liabilities are recognized based on the present value of the future minimum lease payments over the lease term at the commencement date. The determination of future minimum lease payments includes consideration for extension or termination options when it is reasonably certain Synovus will exercise that option as well as rent escalation clauses (including market or index-based escalations) and abatements, capital improvement funding or other lease concessions. As most leases in Synovus' portfolio do not provide an implicit rate, Synovus utilizes a collateralized incremental borrowing rate, referenced to the Federal Home Loan Bank rates for borrowings of similar terms, based on the information available at lease commencement date in determining the present value of future payments. Additionally, for all real estate leases, Synovus applies a portfolio approach (based on lease term) in the application of the discount rate. Determination of the ROU asset also includes prepaid lease payments and amounts recognized relating to favorable or unfavorable lease terms from leases acquired through business combinations. For operating leases, minimum rental expense is recognized on a straight-line basis based on the fixed components of leasing arrangements. Variable lease components represent amounts that are not fixed in nature and are not tied to an index or rate, and are recognized as expense when incurred. For financing leases, rent expense is recognized as amortization expense on a straight-line basis and interest expense using the effective interest method. Additionally, leases with an initial term of 12 months or less are not recorded on the balance sheet; lease expense for these leases is recognized on a straight-line basis over the lease term. Net lease cost is recorded net of sublease income. For leases beginning in 2019 and later, lease components (e.g., base rent) are accounted for separately from non-lease components (e.g., common-area maintenance costs, real estate taxes and insurance costs). ASU 2017-04, Intangibles-Goodwill and Other, Simplifying the Test for Goodwill Impairment : In January 2017, the FASB issued ASU 2017- 04, which simplifies how an entity is required to test goodwill for impairment by eliminating Step 2 from the goodwill impairment test. Therefore, any carrying amount which exceeds the reporting unit’s fair value (up to the amount of goodwill recorded) will be recognized as an impairment loss. The ASU is effective for annual reporting periods beginning after December 15, 2019, including interim periods within those periods. Early adoption is permitted for interim or annual goodwill impairment tests performed on testing dates after January 1, 2017. Synovus elected to early adopt the guidance, effective January 1, 2019. Synovus performed a qualitative assessment as allowed under ASC 350-20-35 during its annual impairment test as of June 30, 2019 and based on the assessment performed, management concluded goodwill was not impaired. As such, the adoption of this ASU had no impact. Recently Issued Accounting Standards Not Yet Adopted ASU 2016-13, Financial Instruments--Credit Losses (CECL). In June 2016, the FASB issued new guidance related to credit losses. The new guidance (and all subsequent ASUs) replaces the existing incurred loss impairment guidance with an expected credit loss methodology. The new guidance will require management’s estimate of credit losses over the full remaining expected life of loans and other financial instruments. For Synovus, the standard will apply to loans, unfunded loan commitments, and debt securities available for sale. The standard is effective for fiscal years beginning after December 15, 2019 and interim periods within those fiscal years with early adoption permitted on January 1, 2019. Synovus will adopt the guidance on January 1, 2020. Upon adoption, Synovus will record a cumulative-effect adjustment to retained earnings as of the beginning of the reporting period of adoption. In addition, the amendments provide for a simplified accounting model for purchased financial assets with a more-than-insignificant amount of credit deterioration since their acquisition ("PCD assets"). The initial estimate of expected credit losses on PCD assets will be recognized through the ALL with an offset to the cost basis of the related financial asset at acquisition. Synovus is continuing its implementation efforts which are led by a cross-functional steering committee. The team meets periodically to discuss the latest developments and ensure progress compared to the planned timeline. We continued our limited parallel testing during the second quarter of 2019. The results are being utilized to refine our models and estimation techniques. Documentation of new processes and internal controls that will be implemented as part of standard adoption is also in process. Implementation status updates are provided quarterly to executive management and the Audit Committee of the Board. Management expects that the allowance for loan losses will be higher under the new standard primarily for longer duration consumer loans, due to the difference between loss emergence periods currently used versus the remaining life of the asset required under CECL. However, management is still in the process of refining estimates to ultimately determine the impact on the financial statements and regulatory capital ratios. Additionally, the extent of the expected increase on the ALL will depend upon the composition of the loan portfolio upon adoption of the standard, as well as economic conditions and forecasts at that time.

Acquisitions

Acquisitions	6 Months Ended
	Jun. 30, 2019
Business Combinations [Abstract]
Acquisitions	Note 2 - Acquisitions Acquisition of FCB Financial Holdings, Inc. Effective January 1, 2019 (the "Acquisition Date"), Synovus completed its acquisition of all of the outstanding stock of FCB, a bank holding company based in Weston, Florida, for total consideration of $1.63 billion . Effective January 1, 2019, FCB's wholly-owned banking subsidiary, Florida Community Bank National Association, merged into Synovus Bank. On the Acquisition Date, the preliminary estimated fair values of FCB included approximately $12.4 billion of identifiable assets, $9.3 billion in loans, and $10.9 billion in deposits. With the addition of FCB and its 51 full service banking centers, Synovus expanded its deposit base in the Southeast. The addition of FCB elevated Synovus' growth profile through a deepened presence in high-growth Florida markets. Conversion of FCB systems occurred during the second quarter of 2019. The results of FCB's operations are included in Synovus' consolidated financial statements since the Acquisition Date. Under the terms of the Merger Agreement, each outstanding share of FCB common stock was converted into the right to receive 1.055 Synovus common shares and cash in lieu of fractional shares. Additionally, under the terms of the Merger Agreement, certain outstanding FCB non-vested equity awards with a fair value of $7.5 million on the Acquisition Date accelerated vesting and converted automatically into the right to receive merger consideration at the merger exchange ratio of 1.055 , or an equivalent amount in cash, of which $3.5 million was allocated to purchase price and the remaining to merger-related compensation expense. In the aggregate, on the Acquisition Date, FCB stockholders received 49.5 million shares of Synovus common stock valued at $1.58 billion and $601 thousand in cash. Also, under the terms of the Merger Agreement, FCB employee and non-employee director outstanding stock options and non-vested restricted share units as well as outstanding FCB warrants were converted into options, restricted share units, and warrants, respectively, to purchase and receive Synovus common stock. The converted options and restricted share units had a fair value of $41.5 million on the Acquisition Date, of which $37.3 million was allocated to purchase price and the remaining to compensation expense and the converted warrants had a fair value of $6.7 million attributed to purchase price. The estimated fair value of the converted restricted share units was based on Synovus' closing stock price on December 31, 2018 of $31.99 , and the estimated fair value of the converted stock options was determined using a Hull-White model in a binomial lattice option pricing framework. The estimated fair value of the converted warrants was determined using the Black-Scholes-Merton model. The acquisition of FCB constituted a business combination and was accounted for under the acquisition method of accounting in accordance with ASC Topic 805, Business Combinations . Accordingly, assets acquired, liabilities assumed, and consideration exchanged were recorded at their estimated fair value on the Acquisition Date. The determination of estimated fair values requires management to make certain estimates about discount rates, future expected cash flows, market conditions, and other future events that are highly subjective in nature and may require adjustments. Upon receipt of final fair value estimates during the measurement period, which must be within one year of the acquisition date, Synovus will record any adjustments to the preliminary fair value estimates in the reporting period in which the adjustments are determined. Fair value adjustments based on updated estimates could materially affect the goodwill recorded on the acquisition. Synovus may incur losses on the acquired loans that are materially different from losses Synovus originally projected. Preliminary goodwill of $435.1 million was recorded as a result of the transaction and is not-deductible for tax purposes. FCB's $19.6 million of merger-based success fees payable to third-party advisors and investment bankers were accounted for as part of the business combination and an assumed liability. Since the success fees payable by FCB were contingent upon the consummation of the merger, the expense was recognized as an "on the line" expense with no expense recognition in either the pre- or post-acquisition financials of FCB or Synovus. The following table reflects the consideration transferred for FCB's net assets and the identifiable assets purchased and liabilities assumed at their estimated fair values as of January 1, 2019. These fair value measurement estimates are based on third-party and internal valuations and reflect measurement period adjustments to the amounts reported as of March 31, 2019, the most significant of which consists of a decrease in core deposit intangibles of $10.8 million , with offsetting increases in goodwill and net deferred tax assets (the income statement impact of such adjustments was immaterial). (in thousands) Consideration transferred: Synovus common stock issued and reissued from treasury attributed to purchase price (1) $ 1,582,133 Cash payments to FCB stockholders attributed to purchase price (2) 173 Fair value of exchanged employee and director equity awards and FCB warrants attributed to purchase price (1) 43,972 Total purchase price $ 1,626,278 Statement of Net Assets Acquired at Fair Value (Preliminary): Assets Cash and cash equivalents $ 201,689 Investment securities available for sale 2,301,001 Loans 9,289,208 Cash surrender value of bank-owned life insurance 216,848 Premises and equipment 44,875 Core deposit intangible 57,400 Other assets 268,804 Total Assets $ 12,379,825 Liabilities Deposits $ 10,930,724 Federal funds purchased and securities sold under repurchase agreements 29,139 Long-term debt 153,236 Other liabilities 75,523 Total Liabilities $ 11,188,622 Fair value of net identifiable assets acquired 1,191,203 Preliminary goodwill $ 435,075 (1) Based on Synovus' closing stock price of $31.99 on December 31, 2018. (2) $173 thousand of cash payment of $601 thousand attributed to purchase price with remaining allocated to compensation expense. The following is a description of the methods used to determine the fair values of significant assets acquired and liabilities assumed presented above. Investment Securities Available for Sale : Fair values of securities were based on quoted market prices from multiple third-party pricing services as well as realized proceeds upon sale of certain corporate bonds. Loans : The Income Approach was utilized in accordance with ASC Topic 820 to estimate the fair value of the loans as of the Acquisition Date. The Income Approach utilizes a discounted cash flow method, to present value the expected cash flows using a market-based discount rate. The acquired loans were grouped together based on the terms of the loans, variable or fixed interest rate, variable index rate, interest or principal only loans, payment plans and amortizing or non-amortizing loans. The discounted cash flow model utilized the contractual loan data and market-based assumptions for prepayment rates, loss rates, and servicing fee, at the loan group level, to project expected loan cash flows as of the Acquisition Date. Core Deposit Intangible (CDI): This intangible asset represents the value of the relationships with deposit customers. The fair value of the core deposit intangible asset was estimated based on a discounted cash flow methodology that gave appropriate consideration to expected customer attrition rates, net maintenance cost of the deposit base, alternative costs of funds, and the interest costs associated with the customer deposits. The CDI is being amortized over its estimated useful life of approximately ten years utilizing an accelerated method. The decrease in the CDI of $10.8 million during the quarter was based on further review of the alternative cost of funds assumptions at the Acquisition Date. Deposits : Certificates of deposit were valued by projecting out the expected cash flows based on the contractual terms of the certificates of deposit. These cash flows were discounted based on a market rate for a certificate of deposit with a corresponding maturity. The fair values for demand and savings deposits were assumed to approximate the carrying value as these accounts have no stated maturity and are payable on demand. Long-term Debt : Fair values for FHLB borrowings were based on market values and market rates provided by the FHLB. The following table presents consolidated financial information included in Synovus' unaudited consolidated statements of income from the Acquisition Date (January 1, 2019) through June 30, 2019 under the column "Actual from Acquisition Date." Synovus does not provide separate summary financial information of FCB from the Acquisition Date since it would be impracticable to do so as certain systems and processes were integrated during the six months ended June 30, 2019. The following table also presents unaudited pro forma information as if the acquisition occurred on January 1, 2018 under the "Pro Forma" column. The unaudited pro forma results include the estimated impact of amortizing and accreting certain estimated purchase accounting adjustments such as intangible assets as well as fair value adjustments to loans and deposits. Merger-related expenses that occurred at the effective time of the merger or subsequent to the merger are not reflected in the unaudited pro forma amounts. Cost savings are also not reflected in the unaudited pro forma amounts for the six months ended June 30, 2018. The pro forma information does not necessarily reflect the results of operations that would have occurred had Synovus merged with FCB at the beginning of 2018. (in thousands) Actual from Acquisition Date (January 1, 2019) through June 30, 2019 (1) Pro Forma for Six Months Ended June 30, 2018 Net interest income $ 794,438 $ 760,304 Non-interest income 169,185 155,610 Net income available to common shareholders 270,070 309,786 (1) Actual results for the six months ended June 30, 2019 include pre-tax merger-related expense of $57.1 million . In connection with the FCB acquisition, Synovus incurred merger-related expense totaling $7.4 million and $57.1 million for the three and six months ended June 30, 2019 , primarily related to employment compensation agreements, severance, professional services, and contract termination charges, including the payment of $21.8 million related to employment agreements of certain FCB executives. Merger-related expense for the three and six months ended June 30, 2019 is presented in the table below: (in thousands) Three Months Ended June 30, 2019 Six Months Ended June 30, 2019 Employment compensation agreements, severance, and other employee benefit costs $ 1,774 $ 34,762 Professional fees 1,791 16,991 All other expense (1) 3,836 5,387 Total merger-related expense $ 7,401 $ 57,140 (1) Primarily relates to fees associated with lease exit accruals, asset impairments related to the integration, and contract termination charges. Acquisition of Global One On October 1, 2016, Synovus completed its acquisition of all of the outstanding stock of Global One. Under the terms of the merger agreement, the purchase price included additional annual payments ("Earnout Payments") to Global One's former shareholders over a three to five years period, with amounts based on a percentage of "Global One Earnings," as defined in the merger agreement. The Earnout Payments consist of shares of Synovus common stock as well as a smaller cash consideration component. During 2018, Synovus recorded an $11.7 million increase to the earnout liability driven by increased earnings projections of Global One and issued the second annual Earnout Payment of 199 thousand shares of Synovus common stock valued at $7.4 million and $1.2 million in cash. The total fair value of the earnout liability at June 30, 2019 was $14.4 million based on the estimated fair value of the remaining Earnout Payments.

Investment Securities Available

Investment Securities Available for Sale	6 Months Ended
	Jun. 30, 2019
Investments [Abstract]
Investment Securities Available for Sale	Note 3 - Investment Securities Available for Sale The amortized cost, gross unrealized gains and losses, and estimated fair values of investment securities available for sale at June 30, 2019 and December 31, 2018 are summarized below. June 30, 2019 (in thousands) Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value U.S. Treasury securities $ 19,689 $ — $ — $ 19,689 U.S. Government agency securities 64,070 1,617 — 65,687 Mortgage-backed securities issued by U.S. Government agencies 88,677 367 (767 ) 88,277 Mortgage-backed securities issued by U.S. Government sponsored enterprises 4,873,285 84,794 (9,408 ) 4,948,671 Collateralized mortgage obligations issued by U.S. Government agencies or sponsored enterprises 859,235 6,391 (3,093 ) 862,533 Commercial mortgage-backed securities issued by U.S. Government sponsored enterprises 354,104 14,339 — 368,443 State and municipal securities 2,107 — (7 ) 2,100 Asset-backed securities 501,713 4,044 (640 ) 505,117 Corporate debt securities 144,401 2,124 (30 ) 146,495 Total investment securities available for sale $ 6,907,281 $ 113,676 $ (13,945 ) $ 7,007,012 December 31, 2018 (in thousands) Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value U.S. Treasury securities $ 123,436 $ — $ (1,359 ) $ 122,077 U.S. Government agency securities 38,021 361 — 38,382 Mortgage-backed securities issued by U.S. Government agencies 100,060 172 (3,027 ) 97,205 Mortgage-backed securities issued by U.S. Government sponsored enterprises 2,460,498 1,981 (63,829 ) 2,398,650 Collateralized mortgage obligations issued by U.S. Government agencies or sponsored enterprises 1,215,406 2,997 (29,885 ) 1,188,518 Commercial mortgage-backed securities issued by U.S. Government sponsored enterprises 131,492 613 (2,240 ) 129,865 Corporate debt securities 17,000 150 (215 ) 16,935 Total investment securities available for sale $ 4,085,913 $ 6,274 $ (100,555 ) $ 3,991,632 At June 30, 2019 and December 31, 2018 , investment securities with a carrying value of $1.59 billion and $1.56 billion , respectively, were pledged to secure certain deposits and securities sold under repurchase agreements as required by law and contractual agreements. Synovus has evaluated investment securities that are in an unrealized loss position as of June 30, 2019 and December 31, 2018 for OTTI and does not consider any securities in an unrealized loss position to be other-than-temporarily impaired. If Synovus intended to sell a security in an unrealized loss position, the entire unrealized loss would be reflected in earnings. 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. For investment securities that Synovus does not expect to sell, or it is not more likely than not it will be required to sell prior to recovery of its amortized cost basis, the credit component of an OTTI would be recognized in earnings and the non-credit component would be recognized in OCI. Currently, unrealized losses on debt securities are attributable to increases in interest rates on comparable securities from the date of purchase. Synovus regularly evaluates its investment securities portfolio to ensure that there are no conditions that would indicate that unrealized losses represent OTTI. These factors include the length of time the security has been in a loss position, the extent that the fair value is below amortized cost, and the credit standing of the issuer. As of June 30, 2019 , Synovus had 21 investment securities in a loss position for less than twelve months and 69 investment securities in a loss position for twelve months or longer. Asset-backed securities and corporate bonds and other debt securities acquired as part of the FCB acquisition were generally underwritten in accordance with Synovus' credit extension standards, without relying on a bond issuer's guarantee in making the investment decision. These investments are investment grade and will continue to be monitored as part of Synovus' ongoing impairment analysis, but are expected to perform in accordance with their terms. 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 June 30, 2019 and December 31, 2018 are presented below. June 30, 2019 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 $ 626 $ (4 ) $ 61,656 $ (763 ) $ 62,282 $ (767 ) Mortgage-backed securities issued by U.S. Government sponsored enterprises 10,523 (15 ) 1,213,574 (9,393 ) 1,224,097 (9,408 ) Collateralized mortgage obligations issued by U.S. Government agencies or sponsored enterprises 44,539 (21 ) 345,169 (3,072 ) 389,708 (3,093 ) State and municipal securities 1,599 (7 ) — — 1,599 (7 ) Asset-backed securities 124,312 (640 ) — — 124,312 (640 ) Corporate debt securities 9,478 (30 ) — — 9,478 (30 ) Total $ 191,077 $ (717 ) $ 1,620,399 $ (13,228 ) $ 1,811,476 $ (13,945 ) December 31, 2018 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 $ 39,031 $ (118 ) $ 63,570 $ (1,241 ) $ 102,601 $ (1,359 ) Mortgage-backed securities issued by U.S. Government agencies 2,059 (2 ) 79,736 (3,025 ) 81,795 (3,027 ) Mortgage-backed securities issued by U.S. Government sponsored enterprises 130,432 (700 ) 2,105,358 (63,129 ) 2,235,790 (63,829 ) Collateralized mortgage obligations issued by U.S. Government agencies or sponsored enterprises — — 964,732 (29,885 ) 964,732 (29,885 ) Commercial mortgage-backed securities issued by U.S. Government sponsored enterprises 58,998 (1,298 ) 44,220 (942 ) 103,218 (2,240 ) Corporate debt securities — — 1,785 (215 ) 1,785 (215 ) Total $ 230,520 $ (2,118 ) $ 3,259,401 $ (98,437 ) $ 3,489,921 $ (100,555 ) The amortized cost and fair value by contractual maturity of investment securities available for sale at June 30, 2019 are shown below. The expected life of mortgage-backed securities 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, mortgage-backed securities 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 June 30, 2019 (in thousands) Within One 1 to 5 5 to 10 More Than Total Amortized Cost U.S. Treasury securities $ 19,689 $ — $ — $ — $ 19,689 U.S. Government agency securities 791 2,100 61,179 — 64,070 Mortgage-backed securities issued by U.S. Government agencies — 809 16,111 71,757 88,677 Mortgage-backed securities issued by U.S. Government sponsored enterprises — 43,477 467,320 4,362,488 4,873,285 Collateralized mortgage obligations issued by U.S. Government agencies or sponsored enterprises — — 370 858,865 859,235 Commercial mortgage-backed securities issued by U.S. Government sponsored enterprises — 22,699 236,738 94,667 354,104 State and municipal securities — — 1,084 1,023 2,107 Asset-backed securities — 4,496 324,224 172,993 501,713 Corporate debt securities — 109,216 33,185 2,000 144,401 Total amortized cost $ 20,480 $ 182,797 $ 1,140,211 $ 5,563,793 $ 6,907,281 Fair Value U.S. Treasury securities $ 19,689 $ — $ — $ — $ 19,689 U.S. Government agency securities 793 2,107 62,787 — 65,687 Mortgage-backed securities issued by U.S. Government agencies — 810 16,022 71,445 88,277 Mortgage-backed securities issued by U.S. Government sponsored enterprises — 43,479 469,441 4,435,751 4,948,671 Collateralized mortgage obligations issued by U.S. Government agencies or sponsored enterprises — — 377 862,156 862,533 Commercial mortgage-backed securities issued by U.S. Government sponsored enterprises — 23,158 246,337 98,948 368,443 State and municipal securities — — 1,078 1,022 2,100 Asset-backed securities — 4,607 327,521 172,989 505,117 Corporate debt securities — 110,354 34,124 2,017 146,495 Total fair value $ 20,482 $ 184,515 $ 1,157,687 $ 5,644,328 $ 7,007,012 Proceeds from sales, gross gains, and gross losses on sales of securities available for sale for the three and six months ended June 30, 2019 and 2018 are presented below. The specific identification method is used to reclassify gains and losses out of other comprehensive income at the time of sale. Three Months Ended June 30, Six Months Ended June 30, (in thousands) 2019 2018 2019 2018 Proceeds from sales of investment securities available for sale $ 104,434 $ 35,066 $ 1,292,673 $ 35,066 Gross realized gains on sales — — 9,129 — Gross realized losses on sales (1,845 ) (1,296 ) (10,900 ) (1,296 ) Investment securities losses, net $ (1,845 ) $ (1,296 ) $ (1,771 ) $ (1,296 )

Loans and Allowance for Loan Lo

Loans and Allowance for Loan Losses	6 Months Ended
	Jun. 30, 2019
Loans and Allowance for Loan Losses [Abstract]
Loans and Allowance for Loan Losses	Note 4 - Loans and Allowance for Loan Losses The following tables provide a summary of current, accruing past due, and non-accrual loans separately reported by originated (loans originated, renewed, refinanced, modified, or otherwise underwritten by Synovus) and acquired loans from business combinations by portfolio class as of June 30, 2019 and December 31, 2018 . See "Part I - Item 1. Financial Statements and Supplementary Data - Note 1 - Basis of Presentation" in this Report for more information on Synovus' accounting for purchased loans. Current, Accruing Past Due, and Non-accrual Originated Loans June 30, 2019 (in thousands) Current Accruing 30-89 Days Past Due Accruing 90 Days or Greater Past Due Total Accruing Past Due Non-accrual Total Commercial, financial and agricultural $ 7,712,371 $ 19,804 $ 462 $ 20,266 $ 68,573 $ 7,801,210 Owner-occupied 5,348,232 6,331 284 6,615 11,557 5,366,404 Total commercial and industrial 13,060,603 26,135 746 26,881 80,130 13,167,614 Investment properties 5,924,501 1,525 881 2,406 799 5,927,706 1-4 family properties 639,534 2,296 — 2,296 1,618 643,448 Land and development 359,921 1,874 158 2,032 2,735 364,688 Total commercial real estate 6,923,956 5,695 1,039 6,734 5,152 6,935,842 Consumer mortgages 3,175,355 4,494 550 5,044 13,628 3,194,027 Home equity lines 1,569,312 4,783 265 5,048 13,494 1,587,854 Credit cards 253,331 2,503 2,449 4,952 — 258,283 Other consumer loans 2,213,665 18,272 802 19,074 4,667 2,237,406 Total consumer 7,211,663 30,052 4,066 34,118 31,789 7,277,570 Total loans $ 27,196,222 $ 61,882 $ 5,851 $ 67,733 $ 117,071 $ 27,381,026 (1) Current, Accruing Past Due, and Non-accrual Acquired Loans June 30, 2019 (in thousands) Current Accruing 30-89 Days Past Due (2) Accruing 90 Days or Greater Past Due (2) Total Accruing Past Due (2) Non-accrual (2) ASC 310-30 Loans Discount/Premium Total Commercial, financial and agricultural $ 754,672 $ 317 $ — $ 317 $ — $ 1,177,713 $ (16,166 ) $ 1,916,536 Owner-occupied 69,569 — — — — 1,098,670 (4,846 ) 1,163,393 Total commercial and industrial 824,241 317 — 317 — 2,276,383 (21,012 ) 3,079,929 Investment properties 991,090 — — — — 2,105,867 (19,563 ) 3,077,394 1-4 family properties 49,695 — — — 174 55,192 (1,119 ) 103,942 Land and development 125,101 — — — — 109,342 (3,174 ) 231,269 Total commercial real estate 1,165,886 — — — 174 2,270,401 (23,856 ) 3,412,605 Consumer mortgages 132,011 — — — — 2,165,966 (84,242 ) 2,213,735 Home equity lines 65,112 155 — 155 55 5,088 (7,519 ) 62,891 Other consumer loans 308 — — — — 12,902 (1,279 ) 11,931 Total consumer 197,431 155 — 155 55 2,183,956 (93,040 ) 2,288,557 Total loans $ 2,187,558 $ 472 $ — $ 472 $ 229 $ 6,730,740 $ (137,908 ) $ 8,781,091 (3) Current, Accruing Past Due, and Non-accrual Loans December 31, 2018 (in thousands) Current Accruing 30-89 Days Past Due Accruing 90 Days or Greater Past Due Total Accruing Past Due Non-accrual Total Commercial, financial and agricultural $ 7,372,301 $ 7,988 $ 114 $ 8,102 $ 69,295 $ 7,449,698 Owner-occupied 5,317,023 5,433 81 5,514 8,971 5,331,508 Total commercial and industrial 12,689,324 13,421 195 13,616 78,266 12,781,206 Investment properties 5,557,224 1,312 34 1,346 2,381 5,560,951 1-4 family properties 674,648 2,745 96 2,841 2,381 679,870 Land and development 319,978 739 — 739 2,953 323,670 Total commercial real estate 6,551,850 4,796 130 4,926 7,715 6,564,491 Consumer mortgages 2,922,136 7,150 — 7,150 4,949 2,934,235 Home equity lines 1,496,562 7,092 28 7,120 12,114 1,515,796 Credit cards 252,832 3,066 2,347 5,413 — 258,245 Other consumer loans 1,894,352 17,604 1,098 18,702 3,689 1,916,743 Total consumer 6,565,882 34,912 3,473 38,385 20,752 6,625,019 Total loans $ 25,807,056 $ 53,129 $ 3,798 $ 56,927 $ 106,733 $ 25,970,716 (4) (1) Total before net deferred fees and costs of $23.6 million . (2) For purposes of this table, non-performing and past due loans exclude acquired loans accounted for under ASC 310-30. (3) Represents $9.29 billion (at fair value) of loans acquired from FCB, net of paydowns and payoffs since acquisition date. (4) Total before net deferred fees and costs of $24.1 million . Loans with carrying values of $12.16 billion and $8.40 billion were pledged as collateral for borrowings and capacity at June 30, 2019 and December 31, 2018 , respectively, to the FHLB and Federal Reserve Bank. The credit quality of the loan portfolio is reviewed and updated no less frequently than quarterly using the standard asset classification system utilized by the federal banking agencies. These classifications are divided into three groups – Not Criticized (Pass), Special Mention, and Classified or Adverse rating (Substandard, Doubtful, and Loss) and are defined as follows: Pass - loans which are well protected by the current net worth and paying capacity of the obligor (or guarantors, if any) or by the fair value, less cost to acquire and sell in a timely manner, of any underlying collateral. Special Mention - loans which have potential weaknesses that deserve management's close attention. These loans are not adversely classified and do not expose an institution to sufficient risk to warrant an adverse classification. Substandard - loans which are inadequately protected by the current net worth and paying capacity of the obligor or by the collateral pledged, if any. Loans with this classification are characterized by the distinct possibility that the institution will sustain some loss if the deficiencies are not corrected. Doubtful - loans which have all the weaknesses inherent in loans classified as Substandard with the added characteristic that the weaknesses make collection or liquidation in full highly questionable and improbable on the basis of currently known facts, conditions, and values. Loss - loans which are considered by management to be uncollectible and of such little value that their continuance on the institution's books as an asset, without establishment of a specific valuation allowance or charge-off, is not warranted. Synovus fully reserves for any loans rated as Loss. In the following tables, consumer loans are generally assigned a risk grade similar to the classifications described above; however, upon reaching 90 days and 120 days past due, they are generally downgraded to Substandard and Loss, respectively, in accordance with the FFIEC Retail Credit Classification Policy. Additionally, in accordance with Interagency Supervisory Guidance, the risk grade classifications of consumer loans (consumer mortgages and home equity lines) secured by junior liens on 1-4 family residential properties also consider available information on the payment status of any associated senior liens with other financial institutions. Originated Loan Portfolio Credit Exposure by Risk Grade June 30, 2019 (in thousands) Pass Special Mention Substandard (1) Doubtful (2) Loss (3) Total Commercial, financial and agricultural $ 7,534,124 $ 117,878 $ 144,660 $ 4,548 $ — $ 7,801,210 Owner-occupied 5,268,926 17,844 79,561 73 — 5,366,404 Total commercial and industrial 12,803,050 135,722 224,221 4,621 — 13,167,614 Investment properties 5,860,735 22,206 44,765 — — 5,927,706 1-4 family properties 631,648 3,610 8,190 — — 643,448 Land and development 342,427 9,880 12,381 — — 364,688 Total commercial real estate 6,834,810 35,696 65,336 — — 6,935,842 Consumer mortgages 3,179,300 — 13,708 943 76 3,194,027 Home equity lines 1,572,002 — 14,362 21 1,469 1,587,854 Credit cards 255,836 — 934 — 1,513 (4) 258,283 Other consumer loans 2,232,459 — 4,947 — — 2,237,406 Total consumer 7,239,597 — 33,951 964 3,058 7,277,570 Total loans $ 26,877,457 $ 171,418 $ 323,508 $ 5,585 $ 3,058 $ 27,381,026 (5) Acquired Loan Portfolio Credit Exposure by Risk Grade June 30, 2019 (in thousands) Pass Special Mention Substandard (1) Doubtful Loss Total Commercial, financial and agricultural $ 1,881,798 $ 19,981 $ 14,757 $ — $ — $ 1,916,536 Owner-occupied 1,153,900 5,686 3,807 — — 1,163,393 Total commercial and industrial 3,035,698 25,667 18,564 — — 3,079,929 Investment properties 3,035,213 6,439 35,742 — — 3,077,394 1-4 family properties 101,480 — 2,462 — — 103,942 Land and development 231,141 128 — — — 231,269 Total commercial real estate 3,367,834 6,567 38,204 — — 3,412,605 Consumer mortgages 2,213,735 — — — — 2,213,735 Home equity lines 62,746 — 145 — — 62,891 Other consumer loans 11,931 — — — — 11,931 Total consumer 2,288,412 — 145 — — 2,288,557 Total loans $ 8,691,944 $ 32,234 $ 56,913 $ — $ — $ 8,781,091 (6) Loan Portfolio Credit Exposure by Risk Grade December 31, 2018 (in thousands) Pass Special Mention Substandard (1) Doubtful (2) Loss (3) Total Commercial, financial and agricultural $ 7,190,517 $ 118,188 $ 140,218 $ 775 $ — $ 7,449,698 Owner-occupied 5,212,473 55,038 63,572 425 — 5,331,508 Total commercial and industrial 12,402,990 173,226 203,790 1,200 — 12,781,206 Investment properties 5,497,344 40,516 23,091 — — 5,560,951 1-4 family properties 663,692 6,424 9,754 — — 679,870 Land and development 297,855 12,786 13,029 — — 323,670 Total commercial real estate 6,458,891 59,726 45,874 — — 6,564,491 Consumer mortgages 2,926,712 — 7,425 98 — 2,934,235 Home equity lines 1,501,316 — 13,130 174 1,176 1,515,796 Credit cards 255,904 — 858 — 1,483 (4) 258,245 Other consumer loans 1,912,902 — 3,841 — — 1,916,743 Total consumer 6,596,834 — 25,254 272 2,659 6,625,019 Total loans $ 25,458,715 $ 232,952 $ 274,918 $ 1,472 $ 2,659 $ 25,970,716 (7) (1) Includes $265.0 million and $172.3 million of Substandard accruing loans at June 30, 2019 and December 31, 2018 , respectively. (2) The loans within this risk grade are on non-accrual status and generally have an allowance for loan losses equal to 50% of the loan amount. (3) The loans within this risk grade are on non-accrual status and have an allowance for loan losses 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 allowance for loan losses 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. (5) Total before net deferred fees and costs of $23.6 million . (6) Represents $9.29 billion (at fair value) of loans acquired from FCB, net of paydowns and payoffs since acquisition date. (7) Total before net deferred fees and costs of $24.1 million . Acquired loans As discussed in "Part I - Item 1. Financial Statements and Supplementary Data - Note 2 - Acquisitions" , on January 1, 2019, Synovus acquired loans from FCB with fair values of $9.29 billion net of total discount of $168.0 million . At the Acquisition Date, the contractual required payments receivable on the purchased loans accounted for under ASC 310-20 totaled $2.45 billion , with a corresponding fair value of $2.15 billion . The estimated cash flows not expected to be collected at the Acquisition Date were $39.5 million . Information about the acquired FCB loan portfolio accounted for under ASC 310-30 as of the Acquisition Date is in the following table. (in thousands) ASC 310-30 Loans Contractually required principal and interest at acquisition $ 8,377,942 Non-accretable difference (expected losses and foregone interest) (163,147 ) Cash flows expected to be collected at acquisition 8,214,795 Accretable yield (1,066,689 ) Basis in ASC 310-30 loans at acquisition $ 7,148,106 The following table is a summary of changes in the accretable difference for all loans accounted for under ASC 310-30 for the six months ended June 30, 2019 . (in thousands) Six Months Ended June 30, 2019 Beginning balance $ — Additions 1,066,689 Transfers from non-accretable difference to accretable yield (1) 13,516 Accretion (182,944 ) Changes in expected cash flows not affecting non-accretable differences (2) 24,929 Ending balance $ 922,190 (1) Represents improvement in the credit component of expected cash flows. (2) Includes changes in cash flows expected to be collected due to the impact of changes in actual or expected timing of liquidation events, modifications, changes in interest rates and changes in prepayment assumptions. The following tables detail the changes in the allowance for loan losses by loan segment for the three and six months ended June 30, 2019 and 2018 . Allowance for Loan Losses and Recorded Investment in Loans As Of and For The Three Months Ended June 30, 2019 (in thousands) Commercial & Industrial Commercial Real Estate Consumer Total Allowance for loan losses: Beginning balance $ 135,639 $ 69,009 $ 52,388 $ 257,036 Charge-offs (11,095 ) (861 ) (4,909 ) (16,865 ) Recoveries 1,821 1,954 1,311 5,086 Provision for (reversal of) loan losses 11,639 (6,639 ) 7,119 12,119 Ending balance (1) $ 138,004 $ 63,463 $ 55,909 $ 257,376 Ending balance: individually evaluated for impairment $ 16,126 $ 1,229 $ 811 $ 18,166 Ending balance: collectively evaluated for impairment $ 121,878 $ 62,234 $ 55,098 $ 239,210 Loans: Ending balance: total loans (2) $ 16,247,543 $ 10,348,447 $ 9,566,127 $ 36,162,117 Ending balance: individually evaluated for impairment $ 135,548 $ 28,231 $ 31,713 $ 195,492 Ending balance: collectively evaluated for impairment (3) $ 13,857,183 $ 8,070,437 $ 7,433,959 $ 29,361,579 Ending balance: acquired loans accounted for under ASC 310-30 (4) $ 2,254,812 $ 2,249,779 $ 2,100,455 $ 6,605,046 As Of and For The Three Months Ended June 30, 2018 (in thousands) Commercial & Industrial Commercial Real Estate Consumer Total Allowance for loan losses: Beginning balance $ 134,745 $ 73,991 $ 49,028 $ 257,764 Charge-offs (15,770 ) (523 ) (5,211 ) (21,504 ) Recoveries 1,635 480 1,560 3,675 Provision for loan losses 9,725 1,257 808 11,790 Ending balance $ 130,335 $ 75,205 $ 46,185 $ 251,725 Ending balance: individually evaluated for impairment $ 9,474 $ 4,687 $ 771 $ 14,932 Ending balance: collectively evaluated for impairment $ 120,861 $ 70,518 $ 45,414 $ 236,793 Loans: Ending balance: total loans (5)(6) $ 12,275,472 $ 6,644,171 $ 6,237,130 $ 25,156,773 Ending balance: individually evaluated for impairment $ 107,544 $ 53,805 $ 27,676 $ 189,025 Ending balance: collectively evaluated for impairment $ 12,167,928 $ 6,590,366 $ 6,209,454 $ 24,967,748 (1) As of and for the three months ended June 30, 2019 , there was no allowance for loan losses for acquired loans accounted for under ASC 310-30. (2) Total before net deferred fees and costs of $23.6 million . (3) These loans are presented net of the remaining fair value discount of $12.2 million at June 30, 2019 . (4) These loans are presented net of the remaining fair value discount of $125.7 million at June 30, 2019 . (5) Total before net deferred fees and costs of $22.7 million . (6) As of and for the three months ended June 30, 2018 , there were no purchased credit-impaired loans and no allowance for loan losses for purchased credit-impaired loans. Allowance for Loan Losses and Recorded Investment in Loans As Of and For The Six Months Ended June 30, 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 (24,133 ) (2,093 ) (11,337 ) (37,563 ) Recoveries 3,810 2,298 2,588 8,696 Provision for (reversal of) loan losses 25,204 (5,538 ) 16,022 35,688 Ending balance (1) $ 138,004 $ 63,463 $ 55,909 $ 257,376 Ending balance: individually evaluated for impairment $ 16,126 $ 1,229 $ 811 $ 18,166 Ending balance: collectively evaluated for impairment $ 121,878 $ 62,234 $ 55,098 $ 239,210 Loans: Ending balance: total loans (2) $ 16,247,543 $ 10,348,447 $ 9,566,127 $ 36,162,117 Ending balance: individually evaluated for impairment $ 135,548 $ 28,231 $ 31,713 $ 195,492 Ending balance: collectively evaluated for impairment (3) $ 13,857,183 $ 8,070,437 $ 7,433,959 $ 29,361,579 Ending balance: acquired loans accounted for under ASC 310-30 (4) $ 2,254,812 $ 2,249,779 $ 2,100,455 $ 6,605,046 As Of and For The Six Months Ended June 30, 2018 (in thousands) Commercial & Industrial Commercial Real Estate Consumer Total Allowance for loan losses: Beginning balance $ 126,803 $ 74,998 $ 47,467 $ 249,268 Charge-offs (23,786 ) (2,446 ) (9,894 ) (36,126 ) Recoveries 3,995 6,964 3,058 14,017 Provision for (reversal of) loan losses 23,323 (4,311 ) 5,554 24,566 Ending balance $ 130,335 $ 75,205 $ 46,185 $ 251,725 Ending balance: individually evaluated for impairment $ 9,474 $ 4,687 $ 771 $ 14,932 Ending balance: collectively evaluated for impairment $ 120,861 $ 70,518 $ 45,414 $ 236,793 Loans: Ending balance: total loans (5)(6) $ 12,275,472 $ 6,644,171 $ 6,237,130 $ 25,156,773 Ending balance: individually evaluated for impairment $ 107,544 $ 53,805 $ 27,676 $ 189,025 Ending balance: collectively evaluated for impairment $ 12,167,928 $ 6,590,366 $ 6,209,454 $ 24,967,748 (1) As of and for the six months ended June 30, 2019 , there was no allowance for loan losses for acquired loans accounted for under ASC 310-30. (2) Total before net deferred fees and costs of $23.6 million . (3) These loans are presented net of the remaining fair value discount of $12.2 million at June 30, 2019 . (4) These loans are presented net of the remaining fair value discount of $125.7 million at June 30, 2019 . (5) Total before net deferred fees and costs of $22.7 million . (6) As of and for the six months ended June 30, 2018 , there were no purchased credit-impaired loans and no allowance for loan losses for purchased credit-impaired loans. Below is a detailed summary of impaired loans (including TDRs) by class as of June 30, 2019 and December 31, 2018 and for the three and six months ended June 30, 2019 and 2018 . At June 30, 2019 and December 31, 2018 , impaired loans of $69.1 million and $51.3 million , respectively, were on non-accrual status. Impaired Loans (including accruing TDRs) June 30, 2019 December 31, 2018 Recorded Investment Recorded Investment (in thousands) Unpaid Principal Balance Without an ALL With an ALL Related Allowance Unpaid Principal Balance Without an ALL With an ALL Related Allowance Commercial, financial and agricultural $ 94,581 $ 24,420 $ 59,760 $ 13,248 $ 65,150 $ 22,298 $ 34,222 $ 7,133 Owner-occupied 53,576 116 51,252 2,878 49,588 — 48,902 3,074 Total commercial and industrial 148,157 24,536 111,012 16,126 114,738 22,298 83,124 10,207 Investment properties 12,493 — 12,494 585 13,916 — 13,916 1,523 1-4 family properties 5,369 — 5,369 181 5,586 — 5,586 131 Land and development 11,636 1,055 9,313 463 16,283 265 13,431 944 Total commercial real estate 29,498 1,055 27,176 1,229 35,785 265 32,933 2,598 Consumer mortgages 19,988 883 18,814 268 19,506 — 19,506 343 Home equity lines 5,666 — 5,604 335 3,264 — 3,235 224 Other consumer loans 6,412 — 6,412 208 5,565 — 5,565 177 Total consumer 32,066 883 30,830 811 28,335 — 28,306 744 Total loans $ 209,721 $ 26,474 $ 169,018 $ 18,166 $ 178,858 $ 22,563 $ 144,363 $ 13,549 Three Months Ended June 30, 2019 Three Months Ended June 30, 2018 (in thousands) Average Recorded Investment Interest Income Recognized (1) Average Recorded Investment Interest Income Recognized (1) Commercial, financial and agricultural $ 86,393 $ 384 $ 71,505 $ 452 Owner-occupied 51,549 614 38,432 444 Total commercial and industrial 137,942 998 109,937 896 Investment properties 12,929 157 24,439 220 1-4 family properties 5,096 134 11,217 226 Land and development 11,061 34 18,428 74 Total commercial real estate 29,086 325 54,084 520 Consumer mortgages 19,565 217 3,986 200 Home equity lines 4,849 37 21,239 56 Other consumer loans 5,940 81 4,985 71 Total consumer 30,354 335 30,210 327 Total loans $ 197,382 $ 1,658 $ 194,231 $ 1,743 (1) Of the interest income recognized during the three months ended June 30, 2019 and 2018 , cash-basis interest income was $290 thousand and $394 thousand , respectively. Six Months Ended June 30, 2019 Six Months Ended June 30, 2018 (in thousands) Average Recorded Investment Interest Income Recognized (1) Average Recorded Investment Interest Income Recognized (1) Commercial, financial and agricultural $ 81,373 $ 938 $ 73,693 $ 851 Owner-occupied 50,794 1,140 38,073 814 Total commercial and industrial 132,167 2,078 111,766 1,665 Investment properties 12,984 298 23,604 418 1-4 family properties 5,302 265 11,466 442 Land and development 11,062 69 18,299 150 Total commercial real estate 29,348 632 53,369 1,010 Consumer mortgages 19,801 429 5,245 395 Home equity lines 4,076 73 20,613 102 Other consumer loans 5,701 159 5,188 143 Total consumer 29,578 661 31,046 640 Total loans $ 191,093 $ 3,371 $ 196,181 $ 3,315 (1) Of the interest income recognized during the six months ended June 30, 2019 and 2018 , cash-basis interest income was $690 thousand and $535 thousand , respectively. Information about Synovus' TDRs is presented in the following tables. Modifications of loans that are accounted for within a pool under ASC Topic 310-30 are excluded as TDRs. Accordingly, such modifications do not result in the removal of those loans from the pool, even if the modification of those loans would otherwise be considered a TDR. As a result, all such acquired loans that would otherwise meet the criteria for classification as a TDR are excluded from the tables below. The following tables represent, by concession type, the post-modification balance for loans modified or renewed during the three and six months ended June 30, 2019 and 2018 that were reported as accruing or non-accruing TDRs. TDRs by Concession Type Three Months Ended June 30, 2019 (in thousands, except contract data) Number of Contracts Below Market Interest Rate Other Concessions (1) Total Commercial, financial and agricultural 21 $ 1,343 $ 1,589 $ 2,932 Owner-occupied 4 1,082 — 1,082 Total commercial and industrial 25 2,425 1,589 4,014 Investment properties 1 180 — 180 1-4 family properties 4 514 — 514 Land and development 2 169 — 169 Total commercial real estate 7 863 — 863 Consumer mortgages 1 109 — 109 Home equity lines 24 2,321 — 2,321 Other consumer loans 34 586 1,332 1,918 Total consumer 59 3,016 1,332 4,348 Total TDRs 91 $ 6,304 $ 2,921 $ 9,225 (2) Three Months Ended June 30, 2018 (in thousands, except contract data) Number of Contracts Below Market Interest Rate Other Concessions (1) Total Commercial, financial and agricultural 5 $ — $ 576 $ 576 Owner-occupied 4 2,094 592 2,686 Total commercial and industrial 9 2,094 1,168 3,262 Investment properties 2 6,011 256 6,267 1-4 family properties 1 — 492 492 Land and development 3 — 1,786 1,786 Total commercial real estate 6 6,011 2,534 8,545 Consumer mortgages 7 2,963 87 3,050 Home equity lines 3 172 148 320 Other consumer loans 17 388 313 701 Total consumer 27 3,523 548 4,071 Total TDRs 42 $ 11,628 $ 4,250 $ 15,878 (3) (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 each of the three months ended June 30, 2019 and 2018 . (2) No net charge-offs were recorded during the three months ended June 30, 2019 upon restructuring of these loans. (3) No net charge-offs were recorded during the three months ended June 30, 2018 upon restructuring of these loans. TDRs by Concession Type Six Months Ended June 30, 2019 (in thousands, except contract data) Number of Contracts Below Market Interest Rate Other Concessions (1) Total Commercial, financial and agricultural 34 $ 3,126 $ 2,488 $ 5,614 Owner-occupied 6 2,031 — 2,031 Total commercial and industrial 40 5,157 2,488 7,645 Investment properties 2 663 — 663 1-4 family properties 10 1,307 — 1,307 Land and development 2 169 — 169 Total commercial real estate 14 2,139 — 2,139 Consumer mortgages 5 237 1,214 1,451 Home equity lines 25 2,321 105 2,426 Other consumer loans 52 694 2,377 3,071 Total consumer 82 3,252 3,696 6,948 Total TDRs 136 $ 10,548 $ 6,184 $ 16,732 (2 ) Six Months Ended June 30, 2018 (in thousands, except contract data) Number of Contracts Below Market Interest Rate Other Concessions (1) Total Commercial, financial and agricultural 14 $ — $ 1,565 $ 1,565 Owner-occupied 6 4,799 684 5,483 Total commercial and industrial 20 4,799 2,249 7,048 Investment properties 3 6,011 2,215 8,226 1-4 family properties 7 965 492 1,457 Land and development 3 — 1,786 1,786 Total commercial real estate 13 6,976 4,493 11,469 Consumer mortgages 14 4,695 87 4,782 Home equity lines 3 172 148 320 Other consumer loans 31 925 821 1,746 Total consumer 48 5,792 1,056 6,848 Total TDRs 81 $ 17,567 $ 7,798 $ 25,365 (3) (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 each of the six months ended June 30, 2019 and 2018 . (2) No net charge-offs were recorded during the six months ended June 30, 2019 upon restructuring of these loans. (3) No net charge-offs were recorded during the six months ended June 30, 2018 upon restructuring of these loans. For both the three and six months ended June 30, 2019 there was one default with a recorded investment of $5 thousand 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) compared to eight defaults with a recorded investment of $10.5 million for both the three and six months ended June 30, 2018 . If, at the time a loan was designated as a TDR, the loan was not already impaired, the measurement of impairment that resulted from the TDR designation closely approximates the reserve derived through specific loan measurement of impairment in accordance with ASC 310-10-35. Generally, the change in the allowance for loan losses resulting from such TDR designation is not significant. At June 30, 2019 , the allowance for loan losses allocated to accruing TDRs totaling $126.4 million was $5.7 million compared to accruing TDRs of $115.6 million with an allocated allowance for loan losses of $6.1 million at December 31, 2018 . Non-accrual, non-homogeneous loans (commercial-type impaired loans greater than $1 million ) that are designated as TDRs are individually measured for the amount of impairment, if any, both before and after the TDR designation. As of June 30, 2019 and December 31, 2018 , there were no commitments to lend a material amount of additional funds to any customer whose loan was classified as a TDR.

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	6 Months Ended
	Jun. 30, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangible Assets	Note 5 - Goodwill and Other Intangible Assets Changes to the carrying amount of goodwill by reporting unit for the six months ended June 30, 2019 are provided in the following table. There were no changes to the carrying amount of goodwill during the year ended December 31, 2018 . (in thousands) Synovus Bank Reporting Unit Trust Services Reporting Unit Total Balance as of December 31, 2018 $ 32,884 $ 24,431 $ 57,315 Goodwill acquired during the year (preliminary allocation) and adjustments 435,075 — 435,075 Balance as of June 30, 2019 $ 467,959 $ 24,431 $ 492,390 Effective January 1, 2019, Synovus acquired FCB. In connection with the acquisition, Synovus recorded $435.1 million of goodwill based on Acquisition Date preliminary fair value estimates of the assets acquired and liabilities assumed in the business combination, including measurement period adjustments recorded during the three months ended June 30, 2019, the most significant of which consisted of a decrease in core deposit intangible assets of $10.8 million , with offsetting increases in goodwill and net deferred tax assets. Additionally, Synovus recorded a $57.4 million core deposit intangible asset on the Acquisition Date, including the aforementioned measurement period adjustment recorded during the three months ended June 30, 2019. See "Part I - Item 1. Financial Statements and Supplementary Data - Note 2 - Acquisitions" in this Report for additional information on the FCB acquisition. As of June 30, 2019, Synovus completed its annual goodwill impairment evaluation applying ASC 350-20-35-3A, Goodwill Subsequent Measurement - Qualitative Assessment Approach based on the preliminary allocation of goodwill to the reporting units shown above and concluded that goodwill was not impaired. The following table shows the gross carrying amount and accumulated amortization of other intangible assets as of June 30, 2019 and December 31, 2018 , which primarily consist of core deposit intangible assets acquired in the FCB acquisition. Core deposit intangible assets were $52.2 million at June 30, 2019 . The CDI is being amortized over its estimated useful life of approximately ten years utilizing an accelerated method. Amortization expense recognized on intangible assets for the three and six months ended June 30, 2019 , was $2.4 million and $5.8 million , respectively. Amortization expense recognized on intangible assets for the three and six months ended June 30, 2018 was $292 thousand and $583 thousand , respectively. (in thousands) June 30, 2019 December 31, 2018 Other intangible assets, gross carrying amount $ 70,328 $ 12,928 Other intangible assets, accumulated amortization (8,855 ) (3,053 ) Other intangible assets, net carrying amount $ 61,473 $ 9,875

Shareholders' Equity and Other

Shareholders' Equity and Other Comprehensive Income (Loss)	6 Months Ended
	Jun. 30, 2019
Equity [Abstract]
Shareholders' Equity and Other Comprehensive Income (Loss)	Note 6 - Shareholders' Equity and Other Comprehensive Income (Loss) Stock issued for acquisition of FCB On January 1, 2019, as part of the FCB acquisition, Synovus issued 22.0 million shares of common stock and reissued 27.4 million shares of treasury stock and incurred $417 thousand in costs related to the issuance. FCB stockholders received 1.055 shares of Synovus common stock for each outstanding share of FCB common stock. Also, under the terms of the Merger Agreement, outstanding stock options, non-vested restricted share units, and warrants were converted into options, restricted share units, and warrants, respectively, to purchase and receive Synovus common stock. The total value of the acquisition consideration transferred by Synovus was $1.63 billion . See "Part I - Item 1. Financial Statements and Supplementary Data - Note 2 - Acquisitions" in this Report for more information on the FCB acquisition. Repurchases of Common Stock On June 17, 2019, Synovus announced that the Board of Directors increased its prior $400 million share repurchase authorization to $725 million for the year 2019. As of June 30, 2019 , Synovus had repurchased under this program a total of $345.0 million , or 9.2 million shares of its common stock, at an average price of $37.43 per share. Changes in Accumulated Other Comprehensive Income (Loss) by Component (Net of Income Taxes) The following tables illustrate activity within the balances in accumulated other comprehensive income (loss) by component for the three and six months ended June 30, 2019 and 2018 . Changes in Accumulated Other Comprehensive Income (Loss) by Component (Net of Income Taxes) (in thousands) Net unrealized losses on cash flow hedges (1) Net unrealized gains (losses) on investment securities available for sale (1) Post-retirement unfunded health benefit Total Balance, April 1, 2019 $ (12,137 ) $ (7,071 ) $ 866 $ (18,342 ) Other comprehensive income (loss) before reclassifications — 66,290 — 66,290 Amounts reclassified from AOCI — 1,367 (26 ) 1,341 Net current period other comprehensive income (loss) — 67,657 (26 ) 67,631 Balance, June 30, 2019 $ (12,137 ) $ 60,586 $ 840 $ 49,289 Balance, April 1, 2018 $ (12,137 ) $ (96,647 ) $ 1,007 $ (107,777 ) Other comprehensive income (loss) before reclassifications — (18,878 ) — (18,878 ) Amounts reclassified from AOCI — 960 (25 ) 935 Net current period other comprehensive income (loss) — (17,918 ) (25 ) (17,943 ) Balance, June 30, 2018 $ (12,137 ) $ (114,565 ) $ 982 $ (125,720 ) Balance, January 1, 2019 $ (12,137 ) $ (83,179 ) $ 896 $ (94,420 ) Other comprehensive income (loss) before reclassifications — 142,453 — 142,453 Amounts reclassified from AOCI — 1,312 (56 ) 1,256 Net current period other comprehensive income (loss) — 143,765 (56 ) 143,709 Balance, June 30, 2019 $ (12,137 ) $ 60,586 $ 840 $ 49,289 Balance, December 31, 2017 $ (12,137 ) $ (43,470 ) $ 853 $ (54,754 ) Reclassification from adoption of ASU 2018-02 — (7,763 ) 175 (7,588 ) Cumulative-effect adjustment from adoption of ASU 2016-01 — 117 — 117 Other comprehensive income (loss) before reclassifications — (64,409 ) — (64,409 ) Amounts reclassified from AOCI — 960 (46 ) 914 Net current period other comprehensive income (loss) — (63,449 ) (46 ) (63,495 ) Balance, June 30, 2018 $ (12,137 ) $ (114,565 ) $ 982 $ (125,720 ) (1) In accordance with ASC 740-20-45-11(b), in 2010 and 2011, Synovus recorded a deferred tax asset valuation allowance associated with net unrealized losses not recognized in income directly to other comprehensive income (loss) by applying the portfolio approach which treats derivative instruments and available for sale securities as a single portfolio. For all periods presented, the ending balance in net unrealized gains (losses) on cash flow hedges and investment securities available for sale includes unrealized losses of $12.1 million and $13.3 million , respectively, related to the residual tax effects remaining in OCI due to the previously established deferred tax asset valuation allowance. Under the portfolio approach, these unrealized losses are realized at the time the entire portfolio is sold or disposed.

Fair Value Accounting

Fair Value Accounting	6 Months Ended
	Jun. 30, 2019
Fair Value Disclosures [Abstract]
Fair Value Accounting	Note 7 - Fair Value Accounting See "Part II - Item 8. Financial Statements and Supplementary Data - Note 1 - Summary of Significant Accounting Policies" to the consolidated financial statements of Synovus' 2018 Form 10-K for a description of the fair value hierarchy and valuation methodologies for assets and liabilities measured at fair value on a recurring and non-recurring basis. Assets and Liabilities Measured at Fair Value on a Recurring Basis The following tables present all financial instruments measured at fair value on a recurring basis as of June 30, 2019 and December 31, 2018 . June 30, 2019 (in thousands) Level 1 Level 2 Level 3 Total Assets and Liabilities at Fair Value Assets Trading securities: U.S. Government agency securities $ — $ 31 $ — $ 31 Mortgage-backed securities issued by U.S. Government agencies — 3,504 — 3,504 Collateralized mortgage obligations issued by U.S. Government sponsored enterprises — 999 — 999 Other mortgage-backed securities — 1,464 — 1,464 State and municipal securities — 382 — 382 Corporate debt securities — 77 — 77 Total trading securities $ — $ 6,457 $ — $ 6,457 Investment securities available for sale: U.S. Treasury securities $ 19,689 $ — $ — $ 19,689 U.S. Government agency securities — 65,687 — 65,687 Mortgage-backed securities issued by U.S. Government agencies — 88,277 — 88,277 Mortgage-backed securities issued by U.S. Government sponsored enterprises — 4,948,671 — 4,948,671 Collateralized mortgage obligations issued by U.S. Government agencies or sponsored enterprises — 862,533 — 862,533 Commercial mortgage-backed securities issued by U.S. Government sponsored enterprises — 368,443 — 368,443 State and municipal securities — 2,100 — 2,100 Asset-backed securities — 505,117 — 505,117 Corporate debt securities — 144,478 2,017 146,495 Total investment securities available for sale $ 19,689 $ 6,985,306 $ 2,017 $ 7,007,012 Mortgage loans held for sale — 81,855 — 81,855 Private equity investments — — 13,341 13,341 Mutual funds 16,390 — — 16,390 Mutual funds held in rabbi trusts 14,816 — — 14,816 GGL/SBA loans servicing asset — — 3,326 3,326 Derivative assets: Interest rate contracts $ — $ 134,504 $ — $ 134,504 Mortgage derivatives (1) — 1,892 — 1,892 Total derivative assets $ — $ 136,396 $ — $ 136,396 Liabilities Earnout liability (2) — — 14,353 14,353 Derivative liabilities: Interest rate contracts $ — $ 32,193 $ — $ 32,193 Mortgage derivatives (1) — 1,049 — 1,049 Visa derivative — — 1,049 1,049 Total derivative liabilities $ — $ 33,242 $ 1,049 $ 34,291 December 31, 2018 (in thousands) Level 1 Level 2 Level 3 Total Assets and Liabilities at Fair Value Assets Trading securities: U.S. Government agency securities $ — $ 44 $ — $ 44 State and municipal securities — 1,064 — 1,064 Other investments 1,128 894 — 2,022 Total trading securities $ 1,128 $ 2,002 $ — $ 3,130 Investment securities available for sale: U.S. Treasury securities $ 122,077 $ — $ — $ 122,077 U.S. Government agency securities — 38,382 — 38,382 Mortgage-backed securities issued by U.S. Government agencies — 97,205 — 97,205 Mortgage-backed securities issued by U.S. Government sponsored enterprises — 2,398,650 — 2,398,650 Collateralized mortgage obligations issued by U.S. Government agencies or sponsored enterprises — 1,188,518 — 1,188,518 Commercial mortgage-backed securities issued by U.S. Government sponsored enterprises — 129,865 — 129,865 Corporate debt securities — 15,150 1,785 16,935 Total investment securities available for sale $ 122,077 $ 3,867,770 $ 1,785 $ 3,991,632 Mortgage loans held for sale — 37,129 — 37,129 Private equity investments — — 11,028 11,028 Mutual funds 3,168 — — 3,168 Mutual funds held in rabbi trusts 12,844 — — 12,844 GGL/SBA loans servicing asset — — 3,729 3,729 Derivative assets: Interest rate contracts $ — $ 18,388 $ — $ 18,388 Mortgage derivatives (1) — 944 — 944 Total derivative assets $ — $ 19,332 $ — $ 19,332 Liabilities Earnout liability (2) — — 14,353 14,353 Derivative liabilities: Interest rate contracts $ — $ 15,716 $ — $ 15,716 Mortgage derivatives (1) — 819 — 819 Visa derivative — — 1,673 1,673 Total derivative liabilities $ — $ 16,535 $ 1,673 $ 18,208 (1) Mortgage derivatives consist of customer interest rate lock commitments that relate to the potential origination of mortgage loans, which would be classified as held for sale and forward loan sales commitments with third-party investors. (2) Earnout liability consists of contingent consideration obligation related to the Global One acquisition. 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 unpaid principal balance of mortgage loans held for sale measured at fair value and the changes in fair value of these loans. An immaterial portion of these changes in fair value was attributable to changes in instrument-specific credit risk. Mortgage Loans Held for Sale (in thousands) As of June 30, 2019 As of December 31, 2018 Fair value $ 81,855 $ 37,129 Unpaid principal balance 79,873 35,848 Fair value less aggregate unpaid principal balance $ 1,982 $ 1,281 Changes in Fair Value Included in Net Income Three Months Ended June 30, Six Months Ended June 30, (in thousands) 2019 2018 2019 2018 Mortgage loans held for sale $ 345 $ 40 $ 701 $ 155 Fair Value Measurements Using Significant Unobservable Inputs (Level 3) During the three and six months ended June 30, 2019 and 2018 , Synovus did not have any transfers in or out of Level 3 in the fair value hierarchy. For the three and six months ended June 30, 2019 , total net gains/(losses) included in earnings attributable to the change in unrealized gains/(losses) relating to assets/liabilities still held at June 30, 2019 were a $1.5 million gain and a $2.3 million gain, respectively. For the three and six months ended June 30, 2018 , total net gains/(losses) included in earnings attributable to the change in unrealized gains/(losses) relating to assets/liabilities still held at June 30, 2018 were a $2.4 million loss and a $5.4 million loss , respectively. Three Months Ended June 30, 2019 (in thousands) Investment Securities Available for Sale Private Equity Investments GGL / SBA Loans Servicing Asset Earnout Visa Derivative Beginning balance, April 1, 2019 $ 1,981 $ 11,886 $ 3,447 $ (14,353 ) $ (1,366 ) Total gains (losses) realized/unrealized: Included in earnings — 1,455 (305 ) — — Unrealized gains (losses) included in OCI 36 — — — — Additions — — 184 — — Settlements — — — — 317 Ending balance, June 30, 2019 $ 2,017 $ 13,341 $ 3,326 $ (14,353 ) $ (1,049 ) Total net gains for the period included in earnings attributable to the change in unrealized gains/(losses) relating to assets/liabilities still held at June 30, 2019 $ — $ 1,455 $ — $ — $ — Three Months Ended June 30, 2018 (in thousands) Investment Securities Available for Sale Private Equity Investments GGL / SBA Earnout Visa Derivative Beginning balance, April 1, 2018 $ 1,852 $ 12,715 $ 3,971 $ (11,348 ) $ (3,974 ) Total (losses) gains realized/unrealized: Included in earnings — (37 ) (312 ) — (2,328 ) Unrealized gains (losses) included in OCI 5 — — — — Additions — — 527 — — Settlements — — — — 359 Ending balance, June 30, 2018 $ 1,857 $ 12,678 $ 4,186 $ (11,348 ) $ (5,943 ) Total net losses for the period included in earnings attributable to the change in unrealized losses relating to assets/liabilities still held at June 30, 2018 $ — $ (37 ) $ — $ — $ (2,328 ) Six Months Ended June 30, 2019 (in thousands) Investment Securities Available for Sale Private Equity Investments GGL / SBA Earnout Visa Derivative Beginning balance, January 1, 2019 $ 1,785 $ 11,028 $ 3,729 $ (14,353 ) $ (1,673 ) Total gains (losses) realized/unrealized: Included in earnings — 2,313 (793 ) — — Unrealized gains (losses) included in OCI 232 — — — — Additions — — 390 — — Settlements — — — — 624 Ending balance, June 30, 2019 $ 2,017 $ 13,341 $ 3,326 $ (14,353 ) $ (1,049 ) Total net losses for the period included in earnings attributable to the change in unrealized losses relating to assets/liabilities still held at June 30, 2019 $ — $ 2,313 $ — $ — $ — Six Months Ended June 30, 2018 (in thousands) Investment Securities Available for Sale Private Equity Investments GGL / SBA Earnout Visa Derivative Beginning balance, January 1, 2018 $ 1,935 $ 15,771 $ 4,101 $ (11,348 ) $ (4,330 ) Total (losses) gains realized/unrealized: Included in earnings — (3,093 ) (734 ) — (2,328 ) Unrealized gains (losses) included in OCI (78 ) — — — — Additions — — 819 — — Sales and settlements — — — — 715 Ending balance, June 30, 2018 $ 1,857 $ 12,678 $ 4,186 $ (11,348 ) $ (5,943 ) Total net losses for the period included in earnings attributable to the change in unrealized losses relating to assets/liabilities still held at June 30, 2018 $ — $ (3,093 ) $ — $ — $ (2,328 ) Assets Measured at Fair Value on a Non-recurring Basis Certain assets are recorded at fair value on a non-recurring basis. Non-recurring fair value adjustments typically are a result of the application of lower of cost or fair value accounting occurring during the period recorded as a charge-off with associated provision expense or a write-down in non-interest expense. For example, if the fair value of an asset in these categories falls below its cost basis, it is considered to be at fair value at the end of the period of the adjustment. 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 during the period. June 30, 2019 December 31, 2018 (in thousands) Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Impaired loans (1) $ — $ — $ 1,540 $ 1,540 $ — $ — $ 21,742 $ 21,742 Other loans held for sale — — — — — — 1,494 1,494 Other real estate — — 2,332 2,332 — — 3,827 3,827 Other assets held for sale — — 350 350 — — 1,104 1,104 (1) Collateral-dependent impaired loans that were written down to fair value during the period. Other real estate (ORE) properties are included in other assets on the consolidated balance sheets. The carrying value of ORE at June 30, 2019 and December 31, 2018 was $14.8 million and $6.2 million , respectively. The following table presents fair value adjustments recognized in earnings for the three and six months ended June 30, 2019 and 2018 for assets measured at fair value on a non-recurring basis still held at period-end. Three Months Ended June 30, Six Months Ended June 30, (in thousands) 2019 2018 2019 2018 Impaired loans (1) $ — $ 6,828 $ 2,625 $ 7,548 Other real estate 612 — 624 — Other assets held for sale — 499 91 499 (1) Collateral-dependent impaired loans that were written down to fair value during the period. Fair Value of Financial Instruments The following tables present the carrying and fair values of financial instruments at June 30, 2019 and December 31, 2018 . The fair values represent management’s estimates based on various methodologies and assumptions. See "Part II - Item 8. Financial Statements and Supplementary Data - Note 1 - Summary of Significant Accounting Policies" to the consolidated financial statements of Synovus' 2018 Form 10-K for a description of how fair value measurements are determined. June 30, 2019 (in thousands) Carrying Value Fair Value Level 1 Level 2 Level 3 Financial assets Total cash, cash equivalents, restricted cash, and restricted cash equivalents $ 1,151,321 $ 1,151,321 $ 1,151,321 $ — $ — Trading securities 6,457 6,457 — 6,457 — Investment securities available for sale 7,007,012 7,007,012 19,689 6,985,306 2,017 Mortgage loans held for sale 81,855 81,855 — 81,855 — Other loans held for sale 4,861 4,861 — — 4,861 Private equity investments 13,341 13,341 — — 13,341 Mutual funds 16,390 16,390 16,390 — — Mutual funds held in rabbi trusts 14,816 14,816 14,816 — — Loans, net 35,881,185 35,674,964 — — 35,674,964 GGL/SBA loans servicing asset 3,326 3,326 — — 3,326 Derivative assets 136,396 136,396 — 136,396 — Financial liabilities Non-interest-bearing deposits $ 9,205,066 $ 9,205,066 $ — $ 9,205,066 $ — Non-time interest-bearing deposits 18,264,053 18,264,053 — 18,264,053 — Time deposits 10,497,603 10,542,659 — 10,542,659 — Total deposits $ 37,966,722 $ 38,011,778 $ — $ 38,011,778 $ — Federal funds purchased and securities sold under repurchase agreements 273,481 273,481 273,481 — — Other short-term borrowings 1,330,000 1,330,000 — 1,330,000 — Long-term debt 2,306,072 2,334,573 — 2,334,573 — Earnout liability 14,353 14,353 — — 14,353 Derivative liabilities 34,291 34,291 — 33,242 1,049 December 31, 2018 (in thousands) Carrying Value Fair Value Level 1 Level 2 Level 3 Financial assets Total cash, cash equivalents, restricted cash, and restricted cash equivalents $ 1,143,564 $ 1,143,564 $ 1,143,564 $ — $ — Trading securities 3,130 3,130 1,128 2,002 — Investment securities available for sale 3,991,632 3,991,632 122,077 3,867,770 1,785 Mortgage loans held for sale 37,129 37,129 — 37,129 — Other loans for sale 1,506 1,506 — — 1,506 Private equity investments 11,028 11,028 — — 11,028 Mutual funds 3,168 3,168 3,168 — — Mutual funds held in rabbi trusts 12,844 12,844 12,844 — — Loans, net 25,696,018 25,438,890 — — 25,438,890 GGL/SBA loans servicing asset 3,729 3,729 — — 3,729 Derivative assets 19,332 19,332 — 19,332 — Financial liabilities Non-interest-bearing deposits $ 7,650,967 $ 7,650,967 $ — $ 7,650,967 $ — Non-time interest-bearing deposits 14,065,959 14,065,959 — 14,065,959 — Time deposits 5,003,396 4,989,570 — 4,989,570 — Total deposits $ 26,720,322 $ 26,706,496 $ — $ 26,706,496 $ — Federal funds purchased and securities sold under repurchase agreements 237,692 237,692 237,692 — — Other short-term borrowings 650,000 650,000 — 650,000 — Long-term debt 1,657,157 1,649,642 — 1,649,642 — Earnout liability 14,353 14,353 — — 14,353 Derivative liabilities 18,208 18,208 — 16,535 1,673

Derivative Instruments

Derivative Instruments	6 Months Ended
	Jun. 30, 2019
Summary of Derivative Instruments [Abstract]
Derivative Instruments	Note 8 - 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 customer transactions. The primary types of derivative instruments utilized by Synovus consist of interest rate swaps, interest rate lock commitments made to prospective mortgage loan customers, and commitments to sell fixed-rate mortgage loans. Interest rate lock commitments represent derivative instruments since it is intended that such loans will be sold. Synovus may also utilize interest rate swaps to manage interest rate risks primarily arising from its core banking activities. As of June 30, 2019 and December 31, 2018 , Synovus had no outstanding interest rate swap contracts utilized to manage interest rate risk related to core banking activities. 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. 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 customer 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, customer credit rating, collateral value, and customer 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 customer specific risk. Collateral Requirements Pursuant to the Dodd-Frank Act, certain derivative transactions have collateral requirements, both at the inception of the trade and as the value of each derivative position changes. As of June 30, 2019 , collateral totaling $77.4 million was pledged to the derivative counterparties to comply with collateral requirements. 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 in the balance sheet and related disclosures. At June 30, 2019 and December 31, 2018 , Synovus had a variation margin of $103.0 million and $3.1 million respectively, each reducing the derivative liability. The following table reflects the notional amount and fair value of derivative instruments included on the consolidated balance sheets. June 30, 2019 December 31, 2018 Fair Value Fair Value (in thousands) Notional Amount Derivative Assets (1) Derivative Liabilities (2) Notional Amount Derivative Assets (1) Derivative Liabilities (2) Derivatives not designated Interest rate contracts (3) $ 5,799,682 $ 134,504 $ 32,193 $ 1,840,288 18,388 $ 15,716 Mortgage derivatives - interest rate lock commitments 119,590 1,892 — 52,420 944 — Mortgage derivatives - forward commitments to sell fixed-rate mortgage loans 127,519 — 1,049 65,500 — 819 Visa derivative — — 1,049 — — 1,673 Total derivatives not designated as hedging instruments $ 136,396 $ 34,291 $ 19,332 $ 18,208 (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 customer swaps and offsetting positions, net of variation margin payments. Synovus has entered into risk participation agreements with counterparties to transfer or assume credit exposures related to interest rate derivatives. The notional amounts of risk participation agreements sold were $102.2 million and $69.9 million at June 30, 2019 and December 31, 2018 , respectively. Assuming all underlying third-party customers referenced in the swap contracts defaulted at June 30, 2019 and December 31, 2018 , the exposure from these agreements would not be material based on the fair value of the underlying swaps. 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 three and six months ended June 30, 2019 and 2018 is presented below. Gain (Loss) Recognized in Consolidated Statements of Income Three Months Ended June 30, Six Months Ended June 30, (in thousands) Location in Consolidated Statements of Income 2019 2018 2019 2018 Derivatives not designated as hedging instruments: Interest rate contracts (1) Capital markets income $ 221 $ (16 ) $ 91 $ (9 ) Mortgage derivatives - interest rate lock commitments Mortgage banking income 255 (369 ) 948 366 Mortgage derivatives - forward commitments to sell fixed-rate mortgage loans Mortgage banking income (243 ) (311 ) (229 ) (119 ) Total derivatives not designated as hedging instruments $ 233 $ (696 ) $ 810 $ 238 (1) Gain (loss) represents net fair value adjustments (including credit-related adjustments and interest settlements on variation margin payments) for customer swaps and offsetting positions.

Net Income Per Common Share

Net Income Per Common Share	6 Months Ended
	Jun. 30, 2019
Earnings Per Share [Abstract]
Net Income Per Common Share	Note 9 - Net Income Per Common Share The following table displays a reconciliation of the information used in calculating basic and diluted earnings per common share for the three and six months ended June 30, 2019 and 2018 . Three Months Ended June 30, Six Months Ended June 30, (in thousands, except per share data) 2019 2018 2019 2018 Basic Net Income Per Common Share: Net income available to common shareholders $ 153,034 $ 108,622 $ 270,070 $ 209,229 Weighted average common shares outstanding 157,389 118,397 159,148 118,531 Net income per common share, basic $ 0.97 $ 0.92 $ 1.70 $ 1.77 Diluted Net Income Per Common Share: Net income available to common shareholders $ 153,034 $ 108,622 $ 270,070 $ 209,229 Weighted average common shares outstanding 157,389 118,397 159,148 118,531 Effect of dilutive outstanding equity-based awards, warrants, and earnout payments 1,688 742 1,760 698 Weighted average diluted common shares 159,077 119,139 160,908 119,229 Net income per common share, diluted $ 0.96 $ 0.91 $ 1.68 $ 1.75 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 stock options, restricted share units, and warrants is reflected in diluted net income per common share, unless the impact is anti-dilutive, by application of the treasury stock method. As of June 30, 2019 , there were 40 thousand potentially dilutive shares related to stock options to purchase shares of common stock that were outstanding during 2019 , and as of June 30, 2018 , there were 2.2 million potentially dilutive shares related to the Warrant to purchase shares of common stock that were outstanding during 2018 but were not included in the computation of diluted net income per common share because the effect would have been anti-dilutive.

Share-based Compensation

Share-based Compensation	6 Months Ended
	Jun. 30, 2019
Share-based Payment Arrangement [Abstract]
Share-based Compensation	Note 10 - Share-based Compensation As a result of the FCB acquisition on January 1, 2019, Synovus assumed 3.2 million outstanding FCB stock option awards and 136 thousand outstanding FCB restricted stock unit awards. Pursuant to the Merger Agreement, each stock option and restricted share unit outstanding on the Acquisition Date was assumed and converted into a stock option or restricted stock unit award relating to shares of Synovus common stock, with the same terms and conditions as were applicable under such award prior to the acquisition. The converted options and restricted share units had a fair value of $41.5 million on the Acquisition Date, of which $4.2 million was allocated to compensation expense and the remaining to purchase price. The estimated fair value of the converted restricted share units was based on Synovus' closing stock price on December 31, 2018, and the estimated fair value of the converted stock options was determined using a Hull-White model in a binomial lattice option pricing framework. Additionally, under the terms of the Merger Agreement, certain outstanding FCB non-vested equity awards with a fair value of $7.5 million on the Acquisition Date, accelerated vesting and converted automatically into the right to receive merger consideration at the merger exchange ratio of 1.055 , or an equivalent amount in cash, of which $3.9 million was allocated to merger-related compensation expense consisting of $3.5 million settled in equity and $400 thousand settled in cash with the remaining $3.5 million allocated to purchase price. The following tables summarize the status of Synovus' stock options, restricted share units, market restricted share units, and performance share units as of June 30, 2019 , and activity for the six months ended June 30, 2019 . Stock Options (in thousands, except per share amounts) Quantity Weighted-Average Exercise Price Per Share Outstanding at January 1, 2019 640 $ 16.93 Assumed 3,230 23.22 Exercised (461 ) 19.23 Outstanding at June 30, 2019 3,409 $ 22.58 Restricted Share Units Market Restricted Share Units Performance Share Units (in thousands, except per share amounts) Quantity Weighted-Average Grant Date Fair Value Per Share Quantity Weighted-Average Grant Date Fair Value Per Share Quantity Weighted-Average Grant Date Fair Value Per Share Non-vested at January 1, 2019 526 $ 41.18 144 $ 41.91 248 $ 38.29 Granted 537 36.26 151 36.96 140 37.34 Assumed 136 31.99 — — — — Quantity change by TSR factor — — (18 ) 38.06 — — Dividend equivalents granted 10 36.26 2 36.96 10 37.34 Vested (292 ) 36.78 (55 ) 38.06 (93 ) 26.35 Forfeited (82 ) 36.14 (19 ) 40.94 (31 ) 40.65 Non-vested at June 30, 2019 835 $ 38.49 205 $ 39.68 274 $ 41.56 Total share-based compensation expense recognized for the three and six months ended June 30, 2019 and 2018 is presented in the following table by its classification within total non-interest expense. Three Months Ended June 30, Six Months Ended June 30, (in thousands) 2019 2018 2019 2018 Salaries and other personnel expense $ 5,405 $ 3,976 $ 11,713 $ 7,749 Merger-related expense 413 — 4,219 — Other operating expenses 163 389 293 571 Total share-based compensation expense included in non-interest expense $ 5,981 $ 4,365 $ 16,225 $ 8,320

Leases

Leases	6 Months Ended
	Jun. 30, 2019
Leases [Abstract]
Leases	Note 11 - Leases Synovus’ leasing activities are primarily comprised of real estate leases used for retail branch locations and office space for core administrative and operating activities of Synovus’ banking and financial services business, and to a significantly lesser extent, certain equipment. The majority of these leases provide for fixed lease payments, including periodic escalators which are fixed at lease inception, however, a number of leases provide for variable lease payments where periodic increases in payment amounts are indexed to a consumer price index. Many leases include one or more options to renew which generally range from one to five years . Optional extension periods which are reasonably certain to be exercised in the future were included in the measurement of ROU assets and lease liabilities. Synovus’ leasing arrangements do not contain any material residual value guarantees, material restrictive covenants, or material end of lease purchase options. The following table presents the lease balances within the consolidated balance sheet as of June 30, 2019 . The difference between the asset and liability balance is primarily the result of lease liabilities that existed prior to the January 1, 2019 adoption of the new accounting guidance for leases. Leases (in thousands) Classification June 30, 2019 Assets Operating Other Assets $ 373,675 Finance Premises and Equipment, net (1) 3,233 Total leased assets $ 376,908 Liabilities Operating Other Liabilities 381,345 Finance Other Liabilities 3,050 Total lease liabilities $ 384,395 (1) Finance lease assets are recorded net of accumulated amortization of $448 thousand as of June 30, 2019 . For the three and six months ended June 30, 2019 , the components of lease expense were as follows: Lease Cost (in thousands) Classification Three Months Ended June 30, 2019 Six Months Ended June 30, 2019 Operating lease cost, net (1) Net occupancy and equipment expense $ 8,137 $ 16,309 Finance lease cost Amortization of leased assets Net occupancy and equipment expense 224 448 Interest on lease liabilities Net occupancy and equipment expense 19 39 Sublease income (2) Net occupancy and equipment expense (157 ) (323 ) Net lease cost $ 8,223 $ 16,473 (1) Excludes variable and short-term lease costs, which are not material. (2) Sublease income excludes rental income from owned properties of $639 thousand and $1.2 million , respectively, for the three and six months ended June 30, 2019 , which is also included in net occupancy and equipment expenses. The following table presents the weighted average remaining lease term and weighted average discount rates related to Synovus' leases as of June 30, 2019 : Lease Term and Discount Rate Weighted-average remaining lease term (years) Weighted-average discount rate (percentage) Operating leases 21.5 3.55 % Finance leases 4.2 2.44 Supplemental cash flow information related to the Company's leasing activities for the six months ended June 30, 2019 are as follows: Other Information (in thousands) Six Months Ended June 30, 2019 Cash paid for amounts included in the measurement of lease liabilities Operating cash flows from operating leases $ (14,893 ) Operating cash flows from finance leases (39 ) Financing cash flows from finance leases (357 ) The following table presents the maturity of the Company’s lease liabilities as of June 30, 2019 : Maturity of Lease Liabilities (in thousands) Operating Leases Finance Leases Total 2019 $ 14,732 $ 494 $ 15,226 2020 29,437 871 30,308 2021 28,104 839 28,943 2022 27,369 465 27,834 2023 25,711 180 25,891 After 2023 434,340 343 434,683 Total lease payments $ 559,693 $ 3,192 $ 562,885 Less: Imputed interest 178,348 142 178,490 Present value of lease liabilities $ 381,345 $ 3,050 $ 384,395 As of June 30, 2019, minimum lease payments related to operating leases that had not yet commenced were $20.8 million .
Leases	Note 11 - Leases Synovus’ leasing activities are primarily comprised of real estate leases used for retail branch locations and office space for core administrative and operating activities of Synovus’ banking and financial services business, and to a significantly lesser extent, certain equipment. The majority of these leases provide for fixed lease payments, including periodic escalators which are fixed at lease inception, however, a number of leases provide for variable lease payments where periodic increases in payment amounts are indexed to a consumer price index. Many leases include one or more options to renew which generally range from one to five years . Optional extension periods which are reasonably certain to be exercised in the future were included in the measurement of ROU assets and lease liabilities. Synovus’ leasing arrangements do not contain any material residual value guarantees, material restrictive covenants, or material end of lease purchase options. The following table presents the lease balances within the consolidated balance sheet as of June 30, 2019 . The difference between the asset and liability balance is primarily the result of lease liabilities that existed prior to the January 1, 2019 adoption of the new accounting guidance for leases. Leases (in thousands) Classification June 30, 2019 Assets Operating Other Assets $ 373,675 Finance Premises and Equipment, net (1) 3,233 Total leased assets $ 376,908 Liabilities Operating Other Liabilities 381,345 Finance Other Liabilities 3,050 Total lease liabilities $ 384,395 (1) Finance lease assets are recorded net of accumulated amortization of $448 thousand as of June 30, 2019 . For the three and six months ended June 30, 2019 , the components of lease expense were as follows: Lease Cost (in thousands) Classification Three Months Ended June 30, 2019 Six Months Ended June 30, 2019 Operating lease cost, net (1) Net occupancy and equipment expense $ 8,137 $ 16,309 Finance lease cost Amortization of leased assets Net occupancy and equipment expense 224 448 Interest on lease liabilities Net occupancy and equipment expense 19 39 Sublease income (2) Net occupancy and equipment expense (157 ) (323 ) Net lease cost $ 8,223 $ 16,473 (1) Excludes variable and short-term lease costs, which are not material. (2) Sublease income excludes rental income from owned properties of $639 thousand and $1.2 million , respectively, for the three and six months ended June 30, 2019 , which is also included in net occupancy and equipment expenses. The following table presents the weighted average remaining lease term and weighted average discount rates related to Synovus' leases as of June 30, 2019 : Lease Term and Discount Rate Weighted-average remaining lease term (years) Weighted-average discount rate (percentage) Operating leases 21.5 3.55 % Finance leases 4.2 2.44 Supplemental cash flow information related to the Company's leasing activities for the six months ended June 30, 2019 are as follows: Other Information (in thousands) Six Months Ended June 30, 2019 Cash paid for amounts included in the measurement of lease liabilities Operating cash flows from operating leases $ (14,893 ) Operating cash flows from finance leases (39 ) Financing cash flows from finance leases (357 ) The following table presents the maturity of the Company’s lease liabilities as of June 30, 2019 : Maturity of Lease Liabilities (in thousands) Operating Leases Finance Leases Total 2019 $ 14,732 $ 494 $ 15,226 2020 29,437 871 30,308 2021 28,104 839 28,943 2022 27,369 465 27,834 2023 25,711 180 25,891 After 2023 434,340 343 434,683 Total lease payments $ 559,693 $ 3,192 $ 562,885 Less: Imputed interest 178,348 142 178,490 Present value of lease liabilities $ 381,345 $ 3,050 $ 384,395 As of June 30, 2019, minimum lease payments related to operating leases that had not yet commenced were $20.8 million .

Commitments and Contingencies

Commitments and Contingencies	6 Months Ended
	Jun. 30, 2019
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Note 12 - 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 customers. 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 customer 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 low income housing 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 allowance for credit losses associated with unfunded commitments and letters of credit is a component of the unfunded commitments reserve recorded within other liabilities on the consolidated balance sheets. Additionally, unearned fees relating to letters of credit are recorded within other liabilities on the consolidated balance sheets. These amounts are not material to Synovus' consolidated balance sheets. Synovus invests in certain low income housing tax credit partnerships which are engaged in the development and operation of affordable multi-family housing utilizing the LIHTC pursuant to Section 42 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. Synovus typically provides financing during the construction and development of the properties and is at risk for the 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 features required to be met at the project level. (in thousands) June 30, 2019 December 31, 2018 Letters of credit* $ 216,304 $ 157,675 Commitments to fund commercial and industrial loans 6,065,365 5,527,017 Commitments to fund commercial real estate, construction, and land development loans 3,020,509 2,034,223 Commitments under home equity lines of credit 1,419,312 1,258,657 Unused credit card lines 857,536 775,003 Other loan commitments 473,824 400,983 Total unfunded lending commitments and letters of credit $ 12,052,850 $ 10,153,558 Investments in low income housing tax credit partnerships: Carrying amount included in other assets $ 79,541 $ 83,736 Amount of future funding commitments included in carrying amount 28,382 47,123 Short-term construction loans and letter of credit commitments 259 1,585 Funded portion of short-term loans and letters of credit 2,822 5,595 * Represent the contractual amount net of risk participations of approximately $34 million and $46 million at June 30, 2019 and December 31, 2018 , respectively. Merchant Services In accordance with credit and debit card association rules, Synovus sponsors various 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 the 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 three and six months ended June 30, 2019 , the sponsored entities processed and settled $18.88 billion and $36.59 billion of transactions, respectively. For the three and six months ended June 30, 2018 , the sponsored entities processed and settled $17.63 billion and $34.35 billion of transactions, respectively. Synovus began covering and has continued to cover chargebacks related to a particular MPS during 2019 and 2018 where the MPS’s cash reserve account was unavailable to support the chargebacks. As of June 30, 2019 , Synovus had advanced approximately $22.6 million to the MPS to cover these chargebacks. While Synovus has contractual protections against loss, repayment of such amounts will depend upon the continued financial viability and/or valuation of the MPS and the availability of any cash reserve accounts. Legal Proceedings Synovus and its subsidiaries are subject to various legal proceedings and claims that arise in the ordinary course of its business. Additionally, in the ordinary course of business, Synovus and its subsidiaries are subject to regulatory examinations, information gathering requests, tax matters, inquiries and investigations. Synovus, like many other financial institutions, has been the target of numerous legal actions and other proceedings asserting claims for damages and related relief for losses. These actions include claims and counterclaims asserted by individuals related to loans and allegations of violations of state and federal laws and regulations relating to banking practices, including putative class action matters and also claims asserted by shareholders or purported shareholders against Synovus, members of Synovus' Board of Directors, and members of Synovus' management team. In addition to actual damages, if Synovus does not prevail in asserted legal actions, credit-related litigation could result in additional write-downs or charge-offs of loans, 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 June 30, 2019 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 considers whether it is able to estimate the total reasonably possible loss or range of loss. An event is “reasonably possible” if “the chance of the future event or events occurring is more than remote but less than likely.” An event is “remote” if “the chance of the future event or events occurring is more than slight but less than reasonably possible." 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. For those legal matters where Synovus is able to estimate a range of reasonably possible losses, management currently estimates the aggregate range from our outstanding litigation is from zero to $5 million in excess of the amounts accrued, if any, related to those matters. This estimated aggregate range is based upon information currently available to Synovus, and the actual losses could prove to be lower or higher. As there are further developments in these legal matters, Synovus will reassess these matters, and the estimated range of reasonably possible losses may change as a result of this assessment. Based on Synovus' current knowledge and advice of counsel, management presently does not believe that the liabilities arising from these legal matters will have a material adverse effect on Synovus' consolidated financial condition, results of operations or cash flows. However, it is possible that the ultimate resolution of these legal matters could have a material adverse effect on Synovus' results of operations for any particular period. Synovus intends to vigorously pursue all available defenses to these legal matters, but will also consider other alternatives, including settlement, in situations where there is an opportunity to resolve such legal matters on terms that Synovus considers to be favorable, including in light of the continued expense and distraction of defending such legal matters. Synovus maintains insurance coverage, which may be available to cover legal fees, or potential losses that might be incurred in connection with such legal matters. The above-noted estimated range of reasonably possible losses does not take into consideration insurance coverage which may or may not be available for the respective legal matters.

Subsequent Event

Subsequent Event	6 Months Ended
	Jun. 30, 2019
Subsequent Events [Abstract]
Subsequent Event	Note 13 - Subsequent Event Issuance of Series E Preferred Stock On July 1, 2019, Synovus completed a $350 million public offering of Series E Preferred Stock. The offering generated net proceeds of $341.5 million . Dividends on the shares are non-cumulative and, if declared, will accrue and be payable, in arrears, 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. The Series E Preferred Stock is redeemable at Synovus' option in whole or in part, from time to time, on July 1, 2024 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 $25.00 per share, plus any declared and unpaid dividends, without accumulation of any undeclared dividends. The Series E Preferred Stock has no preemptive or conversion rights. Except in limited circumstances, the Series E Preferred Stock does not have any voting rights.

Basis of Presentation (Policies

Basis of Presentation (Policies)	6 Months Ended
	Jun. 30, 2019
Accounting Policies [Abstract]
Basis of Presentation	The accompanying unaudited interim consolidated financial statements have been prepared in accordance with the instructions to the SEC Form 10-Q and Article 10 of Regulation S-X; therefore, they do not include all information and footnotes necessary for a fair presentation of financial position, results of operations, comprehensive income, and cash flows in conformity with GAAP. All adjustments consisting of normally recurring accruals that, in the opinion of management, are necessary for a fair presentation of the consolidated financial position and results of operations for the periods covered by this Report have been included. The accompanying unaudited interim consolidated financial statements should be read in conjunction with the consolidated financial statements and related notes appearing in Synovus' 2018 Form 10-K .
Reclassifications	Prior periods' consolidated financial statements are reclassified whenever necessary to conform to the current periods' presentation.
Use of Estimates in the Preparation of Financial Statements	In preparing the consolidated financial statements in accordance with U.S. 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 revenues and expenses for the periods presented. Actual results could differ significantly from those estimates. Material estimates that are particularly susceptible to change relate to the determination of the allowance for loan losses; estimates of fair value; income taxes; and contingent liabilities including legal matters, among others.
Purchased Loans	Purchased loans are recorded at fair value in accordance with ASC Topic 820, Fair Value Measurement , consistent with the exit price concept on the date of acquisition. Credit risk assumptions and resulting credit discounts are included in the determination of fair value; therefore, no ALL is recorded at the acquisition date. Pursuant to an AICPA letter dated December 18, 2009, the AICPA summarized the SEC staff's view regarding the accounting in subsequent periods for discount accretion associated with loan receivables acquired in a business combination or asset purchase. Regarding the accounting for such loan receivables, in the absence of further standard setting, the AICPA understands the SEC staff would not object to an accounting policy based on contractual cash flows (ASC Topic 310-20, Nonrefundable Fees and Other Costs ) or an accounting policy based on expected cash flows (ASC 310-30, Loans and Debt Securities Acquired with Deteriorated Credit Quality ). Synovus analogizes to ASC Topic 310-30 to account for the fair value discount. Purchased loans are evaluated upon acquisition as following the ASC 310-30 approach or ASC 310-20. Loans meeting the scope exception of ASC 310-30 (e.g. loans with revolving components) are not permitted to be analogized and will be accounted for in accordance with ASC 310-20. For ASC 310-30 loans, expected cash flows at the acquisition date in excess of the fair value of loans are recorded as interest income over the life of the loans using a level yield method if the timing and amount of the future cash flows is reasonably estimable. Subsequent to the acquisition date, increases in cash flows over those expected at the acquisition date are recognized prospectively as interest income. Decreases in expected cash flows due to credit deterioration are recognized by recording an ALL. Loan removals from pools due to pay-off or charge-off are removed at their carrying amount. The difference between the carrying amount and the amount received to satisfy the loan is recorded in interest income. For ASC 310-20 loans, the difference between the fair value and UPB of the loan at the acquisition date is amortized or accreted to interest income over the contractual life of the loans using the effective interest method. In the event of prepayment, the remaining unamortized amount is recognized in interest income in the quarter of prepayment. Due to the significant difference in accounting for ASC 310-30 loans, Synovus believes inclusion of these loans in certain asset quality ratios that reflect non-performing assets in the numerator or denominator (or both) results in significant distortion to these ratios. In addition, because loan level charge-offs related to ASC 310-30 loans are not recognized in the financial statements until the cumulative amounts exceed the original loss projections on a pool basis, the net charge-off ratio is inconsistent with the net charge-off ratio for other loan portfolios. The inclusion of ASC 310-30 loans in certain asset quality ratios could result in a lack of comparability across quarters or years, and could impact comparability with other portfolios that were not impacted by ASC 310-30 accounting. Synovus believes that presenting certain loan and asset quality disclosures separately for ASC 310-20 and ASC 310-30 loans, and/or excluding ASC 310-30 loans, where appropriate and indicated within each table, provides better perspective into underlying trends related to the quality of its loan portfolio.
Non-interest Income - Revenue from Contracts with Customers within the scope of ASC Topic 606	Synovus' contracts with customers generally do not contain terms that require significant judgment to determine the amount of revenue to recognize. Synovus' policies for recognizing non-interest income within the scope of ASC Topic 606, 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, non-sufficient funds, 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 customers' 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 customer 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 customers' 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 expenses and network expenses. Brokerage Revenue: Brokerage revenue consists primarily of commissions. Additionally, brokerage revenue includes advisory fees earned from the management of customer assets. 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. 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. Insurance Revenue (included in other non-interest income 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 customer executes an insurance policy with the insurance carrier. In some cases, Synovus receives payment of trailing commissions each year when the customer pays its annual premium.
Accounting Standards Updates	Recently Adopted Accounting Standards ASU 2016-02, Leases (ASC 842) . Synovus adopted ASC 842 prospectively as of January 1, 2019 for existing leasing arrangements. As such, financial information was not updated and the disclosures required under the new standard are not presented for dates and periods prior to January 1, 2019. Refer to the 2018 10-K for lease disclosures surrounding prior period information reported under ASC 840, Leases. For leases that commenced prior to the effective date of ASC 842, Synovus elected the package of practical expedients not to reassess (a) whether existing contracts contain leases, (b) lease classification for existing leases, and (c) initial direct cost for any existing leases as well as the short-term lease recognition exemption for all leases that qualify. Additionally, Synovus did not elect the practical expedient to combine lease and non-lease components for all of our leases. Adoption of the new standard resulted in the recording of ROU assets and lease liabilities of $381.1 million and $391.0 million , respectively, as of January 1, 2019. These amounts were based on the present value of the remaining rental payments for existing leases and include consideration for renewal and termination options available that we were reasonably certain of exercising. The difference between the asset and liability balance is primarily the result of lease liabilities that existed prior to adoption of the new guidance. The adoption of the standard also resulted in a cumulative-effect adjustment, net of income taxes, to the beginning balance of retained earnings of $4.3 million ( $3.9 million of which consisted of deferred gains associated with sale-leaseback transactions that previously did not qualify for recognition). The ROU assets are included in other assets (other than $4.0 million of finance leases included in premises and equipment) on the consolidated balance sheet and the lease liabilities are included in other liabilities. Adoption of the standard did not materially impact our consolidated statements of income and had no impact on cash flows. Synovus determines if an arrangement is a lease at inception in accordance with ASC 842-10-15-3 and classifies leases as either operating or financing from a lessee perspective and operating or direct financing and sales-type from a lessor perspective based on criteria that are largely similar to those applied under ASC 840, Leases , but without explicit bright lines. ROU assets and lease liabilities are recognized based on the present value of the future minimum lease payments over the lease term at the commencement date. The determination of future minimum lease payments includes consideration for extension or termination options when it is reasonably certain Synovus will exercise that option as well as rent escalation clauses (including market or index-based escalations) and abatements, capital improvement funding or other lease concessions. As most leases in Synovus' portfolio do not provide an implicit rate, Synovus utilizes a collateralized incremental borrowing rate, referenced to the Federal Home Loan Bank rates for borrowings of similar terms, based on the information available at lease commencement date in determining the present value of future payments. Additionally, for all real estate leases, Synovus applies a portfolio approach (based on lease term) in the application of the discount rate. Determination of the ROU asset also includes prepaid lease payments and amounts recognized relating to favorable or unfavorable lease terms from leases acquired through business combinations. For operating leases, minimum rental expense is recognized on a straight-line basis based on the fixed components of leasing arrangements. Variable lease components represent amounts that are not fixed in nature and are not tied to an index or rate, and are recognized as expense when incurred. For financing leases, rent expense is recognized as amortization expense on a straight-line basis and interest expense using the effective interest method. Additionally, leases with an initial term of 12 months or less are not recorded on the balance sheet; lease expense for these leases is recognized on a straight-line basis over the lease term. Net lease cost is recorded net of sublease income. For leases beginning in 2019 and later, lease components (e.g., base rent) are accounted for separately from non-lease components (e.g., common-area maintenance costs, real estate taxes and insurance costs). ASU 2017-04, Intangibles-Goodwill and Other, Simplifying the Test for Goodwill Impairment : In January 2017, the FASB issued ASU 2017- 04, which simplifies how an entity is required to test goodwill for impairment by eliminating Step 2 from the goodwill impairment test. Therefore, any carrying amount which exceeds the reporting unit’s fair value (up to the amount of goodwill recorded) will be recognized as an impairment loss. The ASU is effective for annual reporting periods beginning after December 15, 2019, including interim periods within those periods. Early adoption is permitted for interim or annual goodwill impairment tests performed on testing dates after January 1, 2017. Synovus elected to early adopt the guidance, effective January 1, 2019. Synovus performed a qualitative assessment as allowed under ASC 350-20-35 during its annual impairment test as of June 30, 2019 and based on the assessment performed, management concluded goodwill was not impaired. As such, the adoption of this ASU had no impact. Recently Issued Accounting Standards Not Yet Adopted ASU 2016-13, Financial Instruments--Credit Losses (CECL). In June 2016, the FASB issued new guidance related to credit losses. The new guidance (and all subsequent ASUs) replaces the existing incurred loss impairment guidance with an expected credit loss methodology. The new guidance will require management’s estimate of credit losses over the full remaining expected life of loans and other financial instruments. For Synovus, the standard will apply to loans, unfunded loan commitments, and debt securities available for sale. The standard is effective for fiscal years beginning after December 15, 2019 and interim periods within those fiscal years with early adoption permitted on January 1, 2019. Synovus will adopt the guidance on January 1, 2020. Upon adoption, Synovus will record a cumulative-effect adjustment to retained earnings as of the beginning of the reporting period of adoption. In addition, the amendments provide for a simplified accounting model for purchased financial assets with a more-than-insignificant amount of credit deterioration since their acquisition ("PCD assets"). The initial estimate of expected credit losses on PCD assets will be recognized through the ALL with an offset to the cost basis of the related financial asset at acquisition. Synovus is continuing its implementation efforts which are led by a cross-functional steering committee. The team meets periodically to discuss the latest developments and ensure progress compared to the planned timeline. We continued our limited parallel testing during the second quarter of 2019. The results are being utilized to refine our models and estimation techniques. Documentation of new processes and internal controls that will be implemented as part of standard adoption is also in process. Implementation status updates are provided quarterly to executive management and the Audit Committee of the Board. Management expects that the allowance for loan losses will be higher under the new standard primarily for longer duration consumer loans, due to the difference between loss emergence periods currently used versus the remaining life of the asset required under CECL. However, management is still in the process of refining estimates to ultimately determine the impact on the financial statements and regulatory capital ratios. Additionally, the extent of the expected increase on the ALL will depend upon the composition of the loan portfolio upon adoption of the standard, as well as economic conditions and forecasts at that time.

Acquisitions (Tables)

Acquisitions (Tables)	6 Months Ended
	Jun. 30, 2019
Business Combinations [Abstract]
Schedule of Business Acquisition	The following table reflects the consideration transferred for FCB's net assets and the identifiable assets purchased and liabilities assumed at their estimated fair values as of January 1, 2019. These fair value measurement estimates are based on third-party and internal valuations and reflect measurement period adjustments to the amounts reported as of March 31, 2019, the most significant of which consists of a decrease in core deposit intangibles of $10.8 million , with offsetting increases in goodwill and net deferred tax assets (the income statement impact of such adjustments was immaterial). (in thousands) Consideration transferred: Synovus common stock issued and reissued from treasury attributed to purchase price (1) $ 1,582,133 Cash payments to FCB stockholders attributed to purchase price (2) 173 Fair value of exchanged employee and director equity awards and FCB warrants attributed to purchase price (1) 43,972 Total purchase price $ 1,626,278 Statement of Net Assets Acquired at Fair Value (Preliminary): Assets Cash and cash equivalents $ 201,689 Investment securities available for sale 2,301,001 Loans 9,289,208 Cash surrender value of bank-owned life insurance 216,848 Premises and equipment 44,875 Core deposit intangible 57,400 Other assets 268,804 Total Assets $ 12,379,825 Liabilities Deposits $ 10,930,724 Federal funds purchased and securities sold under repurchase agreements 29,139 Long-term debt 153,236 Other liabilities 75,523 Total Liabilities $ 11,188,622 Fair value of net identifiable assets acquired 1,191,203 Preliminary goodwill $ 435,075 (1) Based on Synovus' closing stock price of $31.99 on December 31, 2018. (2) $173 thousand of cash payment of $601 thousand attributed to purchase price with remaining allocated to compensation expense.
Business Acquisition, Pro Forma Information	The following table presents consolidated financial information included in Synovus' unaudited consolidated statements of income from the Acquisition Date (January 1, 2019) through June 30, 2019 under the column "Actual from Acquisition Date." Synovus does not provide separate summary financial information of FCB from the Acquisition Date since it would be impracticable to do so as certain systems and processes were integrated during the six months ended June 30, 2019. The following table also presents unaudited pro forma information as if the acquisition occurred on January 1, 2018 under the "Pro Forma" column. The unaudited pro forma results include the estimated impact of amortizing and accreting certain estimated purchase accounting adjustments such as intangible assets as well as fair value adjustments to loans and deposits. Merger-related expenses that occurred at the effective time of the merger or subsequent to the merger are not reflected in the unaudited pro forma amounts. Cost savings are also not reflected in the unaudited pro forma amounts for the six months ended June 30, 2018. The pro forma information does not necessarily reflect the results of operations that would have occurred had Synovus merged with FCB at the beginning of 2018. (in thousands) Actual from Acquisition Date (January 1, 2019) through June 30, 2019 (1) Pro Forma for Six Months Ended June 30, 2018 Net interest income $ 794,438 $ 760,304 Non-interest income 169,185 155,610 Net income available to common shareholders 270,070 309,786 (1) Actual results for the six months ended June 30, 2019 include pre-tax merger-related expense of $57.1 million .
Schedule of Acquisition Related Costs	In connection with the FCB acquisition, Synovus incurred merger-related expense totaling $7.4 million and $57.1 million for the three and six months ended June 30, 2019 , primarily related to employment compensation agreements, severance, professional services, and contract termination charges, including the payment of $21.8 million related to employment agreements of certain FCB executives. Merger-related expense for the three and six months ended June 30, 2019 is presented in the table below: (in thousands) Three Months Ended June 30, 2019 Six Months Ended June 30, 2019 Employment compensation agreements, severance, and other employee benefit costs $ 1,774 $ 34,762 Professional fees 1,791 16,991 All other expense (1) 3,836 5,387 Total merger-related expense $ 7,401 $ 57,140 (1) Primarily relates to fees associated with lease exit accruals, asset impairments related to the integration, and contract termination charges.

Investment Securities Availab_2

Investment Securities Available for Sale (Tables)	6 Months Ended
	Jun. 30, 2019
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 June 30, 2019 and December 31, 2018 are summarized below. June 30, 2019 (in thousands) Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value U.S. Treasury securities $ 19,689 $ — $ — $ 19,689 U.S. Government agency securities 64,070 1,617 — 65,687 Mortgage-backed securities issued by U.S. Government agencies 88,677 367 (767 ) 88,277 Mortgage-backed securities issued by U.S. Government sponsored enterprises 4,873,285 84,794 (9,408 ) 4,948,671 Collateralized mortgage obligations issued by U.S. Government agencies or sponsored enterprises 859,235 6,391 (3,093 ) 862,533 Commercial mortgage-backed securities issued by U.S. Government sponsored enterprises 354,104 14,339 — 368,443 State and municipal securities 2,107 — (7 ) 2,100 Asset-backed securities 501,713 4,044 (640 ) 505,117 Corporate debt securities 144,401 2,124 (30 ) 146,495 Total investment securities available for sale $ 6,907,281 $ 113,676 $ (13,945 ) $ 7,007,012 December 31, 2018 (in thousands) Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value U.S. Treasury securities $ 123,436 $ — $ (1,359 ) $ 122,077 U.S. Government agency securities 38,021 361 — 38,382 Mortgage-backed securities issued by U.S. Government agencies 100,060 172 (3,027 ) 97,205 Mortgage-backed securities issued by U.S. Government sponsored enterprises 2,460,498 1,981 (63,829 ) 2,398,650 Collateralized mortgage obligations issued by U.S. Government agencies or sponsored enterprises 1,215,406 2,997 (29,885 ) 1,188,518 Commercial mortgage-backed securities issued by U.S. Government sponsored enterprises 131,492 613 (2,240 ) 129,865 Corporate debt securities 17,000 150 (215 ) 16,935 Total investment securities available for sale $ 4,085,913 $ 6,274 $ (100,555 ) $ 3,991,632
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 June 30, 2019 and December 31, 2018 are presented below. June 30, 2019 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 $ 626 $ (4 ) $ 61,656 $ (763 ) $ 62,282 $ (767 ) Mortgage-backed securities issued by U.S. Government sponsored enterprises 10,523 (15 ) 1,213,574 (9,393 ) 1,224,097 (9,408 ) Collateralized mortgage obligations issued by U.S. Government agencies or sponsored enterprises 44,539 (21 ) 345,169 (3,072 ) 389,708 (3,093 ) State and municipal securities 1,599 (7 ) — — 1,599 (7 ) Asset-backed securities 124,312 (640 ) — — 124,312 (640 ) Corporate debt securities 9,478 (30 ) — — 9,478 (30 ) Total $ 191,077 $ (717 ) $ 1,620,399 $ (13,228 ) $ 1,811,476 $ (13,945 ) December 31, 2018 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 $ 39,031 $ (118 ) $ 63,570 $ (1,241 ) $ 102,601 $ (1,359 ) Mortgage-backed securities issued by U.S. Government agencies 2,059 (2 ) 79,736 (3,025 ) 81,795 (3,027 ) Mortgage-backed securities issued by U.S. Government sponsored enterprises 130,432 (700 ) 2,105,358 (63,129 ) 2,235,790 (63,829 ) Collateralized mortgage obligations issued by U.S. Government agencies or sponsored enterprises — — 964,732 (29,885 ) 964,732 (29,885 ) Commercial mortgage-backed securities issued by U.S. Government sponsored enterprises 58,998 (1,298 ) 44,220 (942 ) 103,218 (2,240 ) Corporate debt securities — — 1,785 (215 ) 1,785 (215 ) Total $ 230,520 $ (2,118 ) $ 3,259,401 $ (98,437 ) $ 3,489,921 $ (100,555 )
Amortized Cost and Estimated Fair Value by Contractual Maturity of Investment Securities Available-for-Sale	For purposes of the maturity table, mortgage-backed securities 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 June 30, 2019 (in thousands) Within One 1 to 5 5 to 10 More Than Total Amortized Cost U.S. Treasury securities $ 19,689 $ — $ — $ — $ 19,689 U.S. Government agency securities 791 2,100 61,179 — 64,070 Mortgage-backed securities issued by U.S. Government agencies — 809 16,111 71,757 88,677 Mortgage-backed securities issued by U.S. Government sponsored enterprises — 43,477 467,320 4,362,488 4,873,285 Collateralized mortgage obligations issued by U.S. Government agencies or sponsored enterprises — — 370 858,865 859,235 Commercial mortgage-backed securities issued by U.S. Government sponsored enterprises — 22,699 236,738 94,667 354,104 State and municipal securities — — 1,084 1,023 2,107 Asset-backed securities — 4,496 324,224 172,993 501,713 Corporate debt securities — 109,216 33,185 2,000 144,401 Total amortized cost $ 20,480 $ 182,797 $ 1,140,211 $ 5,563,793 $ 6,907,281 Fair Value U.S. Treasury securities $ 19,689 $ — $ — $ — $ 19,689 U.S. Government agency securities 793 2,107 62,787 — 65,687 Mortgage-backed securities issued by U.S. Government agencies — 810 16,022 71,445 88,277 Mortgage-backed securities issued by U.S. Government sponsored enterprises — 43,479 469,441 4,435,751 4,948,671 Collateralized mortgage obligations issued by U.S. Government agencies or sponsored enterprises — — 377 862,156 862,533 Commercial mortgage-backed securities issued by U.S. Government sponsored enterprises — 23,158 246,337 98,948 368,443 State and municipal securities — — 1,078 1,022 2,100 Asset-backed securities — 4,607 327,521 172,989 505,117 Corporate debt securities — 110,354 34,124 2,017 146,495 Total fair value $ 20,482 $ 184,515 $ 1,157,687 $ 5,644,328 $ 7,007,012
Schedule of Activity for Available-for-Sale Securities	Proceeds from sales, gross gains, and gross losses on sales of securities available for sale for the three and six months ended June 30, 2019 and 2018 are presented below. The specific identification method is used to reclassify gains and losses out of other comprehensive income at the time of sale. Three Months Ended June 30, Six Months Ended June 30, (in thousands) 2019 2018 2019 2018 Proceeds from sales of investment securities available for sale $ 104,434 $ 35,066 $ 1,292,673 $ 35,066 Gross realized gains on sales — — 9,129 — Gross realized losses on sales (1,845 ) (1,296 ) (10,900 ) (1,296 ) Investment securities losses, net $ (1,845 ) $ (1,296 ) $ (1,771 ) $ (1,296 )

Loans and Allowance for Loan _2

Loans and Allowance for Loan Losses (Tables)	6 Months Ended
	Jun. 30, 2019
Loans and Allowance for Loan Losses [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 separately reported by originated (loans originated, renewed, refinanced, modified, or otherwise underwritten by Synovus) and acquired loans from business combinations by portfolio class as of June 30, 2019 and December 31, 2018 . See "Part I - Item 1. Financial Statements and Supplementary Data - Note 1 - Basis of Presentation" in this Report for more information on Synovus' accounting for purchased loans. Current, Accruing Past Due, and Non-accrual Originated Loans June 30, 2019 (in thousands) Current Accruing 30-89 Days Past Due Accruing 90 Days or Greater Past Due Total Accruing Past Due Non-accrual Total Commercial, financial and agricultural $ 7,712,371 $ 19,804 $ 462 $ 20,266 $ 68,573 $ 7,801,210 Owner-occupied 5,348,232 6,331 284 6,615 11,557 5,366,404 Total commercial and industrial 13,060,603 26,135 746 26,881 80,130 13,167,614 Investment properties 5,924,501 1,525 881 2,406 799 5,927,706 1-4 family properties 639,534 2,296 — 2,296 1,618 643,448 Land and development 359,921 1,874 158 2,032 2,735 364,688 Total commercial real estate 6,923,956 5,695 1,039 6,734 5,152 6,935,842 Consumer mortgages 3,175,355 4,494 550 5,044 13,628 3,194,027 Home equity lines 1,569,312 4,783 265 5,048 13,494 1,587,854 Credit cards 253,331 2,503 2,449 4,952 — 258,283 Other consumer loans 2,213,665 18,272 802 19,074 4,667 2,237,406 Total consumer 7,211,663 30,052 4,066 34,118 31,789 7,277,570 Total loans $ 27,196,222 $ 61,882 $ 5,851 $ 67,733 $ 117,071 $ 27,381,026 (1) Current, Accruing Past Due, and Non-accrual Acquired Loans June 30, 2019 (in thousands) Current Accruing 30-89 Days Past Due (2) Accruing 90 Days or Greater Past Due (2) Total Accruing Past Due (2) Non-accrual (2) ASC 310-30 Loans Discount/Premium Total Commercial, financial and agricultural $ 754,672 $ 317 $ — $ 317 $ — $ 1,177,713 $ (16,166 ) $ 1,916,536 Owner-occupied 69,569 — — — — 1,098,670 (4,846 ) 1,163,393 Total commercial and industrial 824,241 317 — 317 — 2,276,383 (21,012 ) 3,079,929 Investment properties 991,090 — — — — 2,105,867 (19,563 ) 3,077,394 1-4 family properties 49,695 — — — 174 55,192 (1,119 ) 103,942 Land and development 125,101 — — — — 109,342 (3,174 ) 231,269 Total commercial real estate 1,165,886 — — — 174 2,270,401 (23,856 ) 3,412,605 Consumer mortgages 132,011 — — — — 2,165,966 (84,242 ) 2,213,735 Home equity lines 65,112 155 — 155 55 5,088 (7,519 ) 62,891 Other consumer loans 308 — — — — 12,902 (1,279 ) 11,931 Total consumer 197,431 155 — 155 55 2,183,956 (93,040 ) 2,288,557 Total loans $ 2,187,558 $ 472 $ — $ 472 $ 229 $ 6,730,740 $ (137,908 ) $ 8,781,091 (3) Current, Accruing Past Due, and Non-accrual Loans December 31, 2018 (in thousands) Current Accruing 30-89 Days Past Due Accruing 90 Days or Greater Past Due Total Accruing Past Due Non-accrual Total Commercial, financial and agricultural $ 7,372,301 $ 7,988 $ 114 $ 8,102 $ 69,295 $ 7,449,698 Owner-occupied 5,317,023 5,433 81 5,514 8,971 5,331,508 Total commercial and industrial 12,689,324 13,421 195 13,616 78,266 12,781,206 Investment properties 5,557,224 1,312 34 1,346 2,381 5,560,951 1-4 family properties 674,648 2,745 96 2,841 2,381 679,870 Land and development 319,978 739 — 739 2,953 323,670 Total commercial real estate 6,551,850 4,796 130 4,926 7,715 6,564,491 Consumer mortgages 2,922,136 7,150 — 7,150 4,949 2,934,235 Home equity lines 1,496,562 7,092 28 7,120 12,114 1,515,796 Credit cards 252,832 3,066 2,347 5,413 — 258,245 Other consumer loans 1,894,352 17,604 1,098 18,702 3,689 1,916,743 Total consumer 6,565,882 34,912 3,473 38,385 20,752 6,625,019 Total loans $ 25,807,056 $ 53,129 $ 3,798 $ 56,927 $ 106,733 $ 25,970,716 (4) (1) Total before net deferred fees and costs of $23.6 million . (2) For purposes of this table, non-performing and past due loans exclude acquired loans accounted for under ASC 310-30. (3) Represents $9.29 billion (at fair value) of loans acquired from FCB, net of paydowns and payoffs since acquisition date. (4) Total before net deferred fees and costs of $24.1 million .
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 home equity lines) secured by junior liens on 1-4 family residential properties also consider available information on the payment status of any associated senior liens with other financial institutions. Originated Loan Portfolio Credit Exposure by Risk Grade June 30, 2019 (in thousands) Pass Special Mention Substandard (1) Doubtful (2) Loss (3) Total Commercial, financial and agricultural $ 7,534,124 $ 117,878 $ 144,660 $ 4,548 $ — $ 7,801,210 Owner-occupied 5,268,926 17,844 79,561 73 — 5,366,404 Total commercial and industrial 12,803,050 135,722 224,221 4,621 — 13,167,614 Investment properties 5,860,735 22,206 44,765 — — 5,927,706 1-4 family properties 631,648 3,610 8,190 — — 643,448 Land and development 342,427 9,880 12,381 — — 364,688 Total commercial real estate 6,834,810 35,696 65,336 — — 6,935,842 Consumer mortgages 3,179,300 — 13,708 943 76 3,194,027 Home equity lines 1,572,002 — 14,362 21 1,469 1,587,854 Credit cards 255,836 — 934 — 1,513 (4) 258,283 Other consumer loans 2,232,459 — 4,947 — — 2,237,406 Total consumer 7,239,597 — 33,951 964 3,058 7,277,570 Total loans $ 26,877,457 $ 171,418 $ 323,508 $ 5,585 $ 3,058 $ 27,381,026 (5) Acquired Loan Portfolio Credit Exposure by Risk Grade June 30, 2019 (in thousands) Pass Special Mention Substandard (1) Doubtful Loss Total Commercial, financial and agricultural $ 1,881,798 $ 19,981 $ 14,757 $ — $ — $ 1,916,536 Owner-occupied 1,153,900 5,686 3,807 — — 1,163,393 Total commercial and industrial 3,035,698 25,667 18,564 — — 3,079,929 Investment properties 3,035,213 6,439 35,742 — — 3,077,394 1-4 family properties 101,480 — 2,462 — — 103,942 Land and development 231,141 128 — — — 231,269 Total commercial real estate 3,367,834 6,567 38,204 — — 3,412,605 Consumer mortgages 2,213,735 — — — — 2,213,735 Home equity lines 62,746 — 145 — — 62,891 Other consumer loans 11,931 — — — — 11,931 Total consumer 2,288,412 — 145 — — 2,288,557 Total loans $ 8,691,944 $ 32,234 $ 56,913 $ — $ — $ 8,781,091 (6) Loan Portfolio Credit Exposure by Risk Grade December 31, 2018 (in thousands) Pass Special Mention Substandard (1) Doubtful (2) Loss (3) Total Commercial, financial and agricultural $ 7,190,517 $ 118,188 $ 140,218 $ 775 $ — $ 7,449,698 Owner-occupied 5,212,473 55,038 63,572 425 — 5,331,508 Total commercial and industrial 12,402,990 173,226 203,790 1,200 — 12,781,206 Investment properties 5,497,344 40,516 23,091 — — 5,560,951 1-4 family properties 663,692 6,424 9,754 — — 679,870 Land and development 297,855 12,786 13,029 — — 323,670 Total commercial real estate 6,458,891 59,726 45,874 — — 6,564,491 Consumer mortgages 2,926,712 — 7,425 98 — 2,934,235 Home equity lines 1,501,316 — 13,130 174 1,176 1,515,796 Credit cards 255,904 — 858 — 1,483 (4) 258,245 Other consumer loans 1,912,902 — 3,841 — — 1,916,743 Total consumer 6,596,834 — 25,254 272 2,659 6,625,019 Total loans $ 25,458,715 $ 232,952 $ 274,918 $ 1,472 $ 2,659 $ 25,970,716 (7) (1) Includes $265.0 million and $172.3 million of Substandard accruing loans at June 30, 2019 and December 31, 2018 , respectively. (2) The loans within this risk grade are on non-accrual status and generally have an allowance for loan losses equal to 50% of the loan amount. (3) The loans within this risk grade are on non-accrual status and have an allowance for loan losses 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 allowance for loan losses 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. (5) Total before net deferred fees and costs of $23.6 million . (6) Represents $9.29 billion (at fair value) of loans acquired from FCB, net of paydowns and payoffs since acquisition date. (7) Total before net deferred fees and costs of $24.1 million .
Schedule of Acquired Portfolio Loans	Information about the acquired FCB loan portfolio accounted for under ASC 310-30 as of the Acquisition Date is in the following table. (in thousands) ASC 310-30 Loans Contractually required principal and interest at acquisition $ 8,377,942 Non-accretable difference (expected losses and foregone interest) (163,147 ) Cash flows expected to be collected at acquisition 8,214,795 Accretable yield (1,066,689 ) Basis in ASC 310-30 loans at acquisition $ 7,148,106
Schedule Of Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Movement	The following table is a summary of changes in the accretable difference for all loans accounted for under ASC 310-30 for the six months ended June 30, 2019 . (in thousands) Six Months Ended June 30, 2019 Beginning balance $ — Additions 1,066,689 Transfers from non-accretable difference to accretable yield (1) 13,516 Accretion (182,944 ) Changes in expected cash flows not affecting non-accretable differences (2) 24,929 Ending balance $ 922,190 (1) Represents improvement in the credit component of expected cash flows. (2)
Schedule of Allowances for Loan Losses and Recorded Investment in Loans	The following tables detail the changes in the allowance for loan losses by loan segment for the three and six months ended June 30, 2019 and 2018 . Allowance for Loan Losses and Recorded Investment in Loans As Of and For The Three Months Ended June 30, 2019 (in thousands) Commercial & Industrial Commercial Real Estate Consumer Total Allowance for loan losses: Beginning balance $ 135,639 $ 69,009 $ 52,388 $ 257,036 Charge-offs (11,095 ) (861 ) (4,909 ) (16,865 ) Recoveries 1,821 1,954 1,311 5,086 Provision for (reversal of) loan losses 11,639 (6,639 ) 7,119 12,119 Ending balance (1) $ 138,004 $ 63,463 $ 55,909 $ 257,376 Ending balance: individually evaluated for impairment $ 16,126 $ 1,229 $ 811 $ 18,166 Ending balance: collectively evaluated for impairment $ 121,878 $ 62,234 $ 55,098 $ 239,210 Loans: Ending balance: total loans (2) $ 16,247,543 $ 10,348,447 $ 9,566,127 $ 36,162,117 Ending balance: individually evaluated for impairment $ 135,548 $ 28,231 $ 31,713 $ 195,492 Ending balance: collectively evaluated for impairment (3) $ 13,857,183 $ 8,070,437 $ 7,433,959 $ 29,361,579 Ending balance: acquired loans accounted for under ASC 310-30 (4) $ 2,254,812 $ 2,249,779 $ 2,100,455 $ 6,605,046 As Of and For The Three Months Ended June 30, 2018 (in thousands) Commercial & Industrial Commercial Real Estate Consumer Total Allowance for loan losses: Beginning balance $ 134,745 $ 73,991 $ 49,028 $ 257,764 Charge-offs (15,770 ) (523 ) (5,211 ) (21,504 ) Recoveries 1,635 480 1,560 3,675 Provision for loan losses 9,725 1,257 808 11,790 Ending balance $ 130,335 $ 75,205 $ 46,185 $ 251,725 Ending balance: individually evaluated for impairment $ 9,474 $ 4,687 $ 771 $ 14,932 Ending balance: collectively evaluated for impairment $ 120,861 $ 70,518 $ 45,414 $ 236,793 Loans: Ending balance: total loans (5)(6) $ 12,275,472 $ 6,644,171 $ 6,237,130 $ 25,156,773 Ending balance: individually evaluated for impairment $ 107,544 $ 53,805 $ 27,676 $ 189,025 Ending balance: collectively evaluated for impairment $ 12,167,928 $ 6,590,366 $ 6,209,454 $ 24,967,748 (1) As of and for the three months ended June 30, 2019 , there was no allowance for loan losses for acquired loans accounted for under ASC 310-30. (2) Total before net deferred fees and costs of $23.6 million . (3) These loans are presented net of the remaining fair value discount of $12.2 million at June 30, 2019 . (4) These loans are presented net of the remaining fair value discount of $125.7 million at June 30, 2019 . (5) Total before net deferred fees and costs of $22.7 million . (6) As of and for the three months ended June 30, 2018 , there were no purchased credit-impaired loans and no allowance for loan losses for purchased credit-impaired loans. Allowance for Loan Losses and Recorded Investment in Loans As Of and For The Six Months Ended June 30, 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 (24,133 ) (2,093 ) (11,337 ) (37,563 ) Recoveries 3,810 2,298 2,588 8,696 Provision for (reversal of) loan losses 25,204 (5,538 ) 16,022 35,688 Ending balance (1) $ 138,004 $ 63,463 $ 55,909 $ 257,376 Ending balance: individually evaluated for impairment $ 16,126 $ 1,229 $ 811 $ 18,166 Ending balance: collectively evaluated for impairment $ 121,878 $ 62,234 $ 55,098 $ 239,210 Loans: Ending balance: total loans (2) $ 16,247,543 $ 10,348,447 $ 9,566,127 $ 36,162,117 Ending balance: individually evaluated for impairment $ 135,548 $ 28,231 $ 31,713 $ 195,492 Ending balance: collectively evaluated for impairment (3) $ 13,857,183 $ 8,070,437 $ 7,433,959 $ 29,361,579 Ending balance: acquired loans accounted for under ASC 310-30 (4) $ 2,254,812 $ 2,249,779 $ 2,100,455 $ 6,605,046 As Of and For The Six Months Ended June 30, 2018 (in thousands) Commercial & Industrial Commercial Real Estate Consumer Total Allowance for loan losses: Beginning balance $ 126,803 $ 74,998 $ 47,467 $ 249,268 Charge-offs (23,786 ) (2,446 ) (9,894 ) (36,126 ) Recoveries 3,995 6,964 3,058 14,017 Provision for (reversal of) loan losses 23,323 (4,311 ) 5,554 24,566 Ending balance $ 130,335 $ 75,205 $ 46,185 $ 251,725 Ending balance: individually evaluated for impairment $ 9,474 $ 4,687 $ 771 $ 14,932 Ending balance: collectively evaluated for impairment $ 120,861 $ 70,518 $ 45,414 $ 236,793 Loans: Ending balance: total loans (5)(6) $ 12,275,472 $ 6,644,171 $ 6,237,130 $ 25,156,773 Ending balance: individually evaluated for impairment $ 107,544 $ 53,805 $ 27,676 $ 189,025 Ending balance: collectively evaluated for impairment $ 12,167,928 $ 6,590,366 $ 6,209,454 $ 24,967,748 (1) As of and for the six months ended June 30, 2019 , there was no allowance for loan losses for acquired loans accounted for under ASC 310-30. (2) Total before net deferred fees and costs of $23.6 million . (3) These loans are presented net of the remaining fair value discount of $12.2 million at June 30, 2019 . (4) These loans are presented net of the remaining fair value discount of $125.7 million at June 30, 2019 . (5) Total before net deferred fees and costs of $22.7 million . (6) As of and for the six months ended June 30, 2018 , there were no purchased credit-impaired loans and no allowance for loan losses for purchased credit-impaired loans.
Schedule of Impaired Loans	Below is a detailed summary of impaired loans (including TDRs) by class as of June 30, 2019 and December 31, 2018 and for the three and six months ended June 30, 2019 and 2018 . At June 30, 2019 and December 31, 2018 , impaired loans of $69.1 million and $51.3 million , respectively, were on non-accrual status. Impaired Loans (including accruing TDRs) June 30, 2019 December 31, 2018 Recorded Investment Recorded Investment (in thousands) Unpaid Principal Balance Without an ALL With an ALL Related Allowance Unpaid Principal Balance Without an ALL With an ALL Related Allowance Commercial, financial and agricultural $ 94,581 $ 24,420 $ 59,760 $ 13,248 $ 65,150 $ 22,298 $ 34,222 $ 7,133 Owner-occupied 53,576 116 51,252 2,878 49,588 — 48,902 3,074 Total commercial and industrial 148,157 24,536 111,012 16,126 114,738 22,298 83,124 10,207 Investment properties 12,493 — 12,494 585 13,916 — 13,916 1,523 1-4 family properties 5,369 — 5,369 181 5,586 — 5,586 131 Land and development 11,636 1,055 9,313 463 16,283 265 13,431 944 Total commercial real estate 29,498 1,055 27,176 1,229 35,785 265 32,933 2,598 Consumer mortgages 19,988 883 18,814 268 19,506 — 19,506 343 Home equity lines 5,666 — 5,604 335 3,264 — 3,235 224 Other consumer loans 6,412 — 6,412 208 5,565 — 5,565 177 Total consumer 32,066 883 30,830 811 28,335 — 28,306 744 Total loans $ 209,721 $ 26,474 $ 169,018 $ 18,166 $ 178,858 $ 22,563 $ 144,363 $ 13,549 Three Months Ended June 30, 2019 Three Months Ended June 30, 2018 (in thousands) Average Recorded Investment Interest Income Recognized (1) Average Recorded Investment Interest Income Recognized (1) Commercial, financial and agricultural $ 86,393 $ 384 $ 71,505 $ 452 Owner-occupied 51,549 614 38,432 444 Total commercial and industrial 137,942 998 109,937 896 Investment properties 12,929 157 24,439 220 1-4 family properties 5,096 134 11,217 226 Land and development 11,061 34 18,428 74 Total commercial real estate 29,086 325 54,084 520 Consumer mortgages 19,565 217 3,986 200 Home equity lines 4,849 37 21,239 56 Other consumer loans 5,940 81 4,985 71 Total consumer 30,354 335 30,210 327 Total loans $ 197,382 $ 1,658 $ 194,231 $ 1,743 (1) Of the interest income recognized during the three months ended June 30, 2019 and 2018 , cash-basis interest income was $290 thousand and $394 thousand , respectively. Six Months Ended June 30, 2019 Six Months Ended June 30, 2018 (in thousands) Average Recorded Investment Interest Income Recognized (1) Average Recorded Investment Interest Income Recognized (1) Commercial, financial and agricultural $ 81,373 $ 938 $ 73,693 $ 851 Owner-occupied 50,794 1,140 38,073 814 Total commercial and industrial 132,167 2,078 111,766 1,665 Investment properties 12,984 298 23,604 418 1-4 family properties 5,302 265 11,466 442 Land and development 11,062 69 18,299 150 Total commercial real estate 29,348 632 53,369 1,010 Consumer mortgages 19,801 429 5,245 395 Home equity lines 4,076 73 20,613 102 Other consumer loans 5,701 159 5,188 143 Total consumer 29,578 661 31,046 640 Total loans $ 191,093 $ 3,371 $ 196,181 $ 3,315 (1) Of the interest income recognized during the six months ended June 30, 2019 and 2018 , cash-basis interest income was $690 thousand and $535 thousand , respectively.
Troubled Debt Restructurings	Information about Synovus' TDRs is presented in the following tables. Modifications of loans that are accounted for within a pool under ASC Topic 310-30 are excluded as TDRs. Accordingly, such modifications do not result in the removal of those loans from the pool, even if the modification of those loans would otherwise be considered a TDR. As a result, all such acquired loans that would otherwise meet the criteria for classification as a TDR are excluded from the tables below. The following tables represent, by concession type, the post-modification balance for loans modified or renewed during the three and six months ended June 30, 2019 and 2018 that were reported as accruing or non-accruing TDRs. TDRs by Concession Type Three Months Ended June 30, 2019 (in thousands, except contract data) Number of Contracts Below Market Interest Rate Other Concessions (1) Total Commercial, financial and agricultural 21 $ 1,343 $ 1,589 $ 2,932 Owner-occupied 4 1,082 — 1,082 Total commercial and industrial 25 2,425 1,589 4,014 Investment properties 1 180 — 180 1-4 family properties 4 514 — 514 Land and development 2 169 — 169 Total commercial real estate 7 863 — 863 Consumer mortgages 1 109 — 109 Home equity lines 24 2,321 — 2,321 Other consumer loans 34 586 1,332 1,918 Total consumer 59 3,016 1,332 4,348 Total TDRs 91 $ 6,304 $ 2,921 $ 9,225 (2) Three Months Ended June 30, 2018 (in thousands, except contract data) Number of Contracts Below Market Interest Rate Other Concessions (1) Total Commercial, financial and agricultural 5 $ — $ 576 $ 576 Owner-occupied 4 2,094 592 2,686 Total commercial and industrial 9 2,094 1,168 3,262 Investment properties 2 6,011 256 6,267 1-4 family properties 1 — 492 492 Land and development 3 — 1,786 1,786 Total commercial real estate 6 6,011 2,534 8,545 Consumer mortgages 7 2,963 87 3,050 Home equity lines 3 172 148 320 Other consumer loans 17 388 313 701 Total consumer 27 3,523 548 4,071 Total TDRs 42 $ 11,628 $ 4,250 $ 15,878 (3) (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 each of the three months ended June 30, 2019 and 2018 . (2) No net charge-offs were recorded during the three months ended June 30, 2019 upon restructuring of these loans. (3) No net charge-offs were recorded during the three months ended June 30, 2018 upon restructuring of these loans. TDRs by Concession Type Six Months Ended June 30, 2019 (in thousands, except contract data) Number of Contracts Below Market Interest Rate Other Concessions (1) Total Commercial, financial and agricultural 34 $ 3,126 $ 2,488 $ 5,614 Owner-occupied 6 2,031 — 2,031 Total commercial and industrial 40 5,157 2,488 7,645 Investment properties 2 663 — 663 1-4 family properties 10 1,307 — 1,307 Land and development 2 169 — 169 Total commercial real estate 14 2,139 — 2,139 Consumer mortgages 5 237 1,214 1,451 Home equity lines 25 2,321 105 2,426 Other consumer loans 52 694 2,377 3,071 Total consumer 82 3,252 3,696 6,948 Total TDRs 136 $ 10,548 $ 6,184 $ 16,732 (2 ) Six Months Ended June 30, 2018 (in thousands, except contract data) Number of Contracts Below Market Interest Rate Other Concessions (1) Total Commercial, financial and agricultural 14 $ — $ 1,565 $ 1,565 Owner-occupied 6 4,799 684 5,483 Total commercial and industrial 20 4,799 2,249 7,048 Investment properties 3 6,011 2,215 8,226 1-4 family properties 7 965 492 1,457 Land and development 3 — 1,786 1,786 Total commercial real estate 13 6,976 4,493 11,469 Consumer mortgages 14 4,695 87 4,782 Home equity lines 3 172 148 320 Other consumer loans 31 925 821 1,746 Total consumer 48 5,792 1,056 6,848 Total TDRs 81 $ 17,567 $ 7,798 $ 25,365 (3) (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 each of the six months ended June 30, 2019 and 2018 . (2) No net charge-offs were recorded during the six months ended June 30, 2019 upon restructuring of these loans. (3) No net charge-offs were recorded during the six months ended June 30, 2018 upon restructuring of these loans.

Goodwill and Other Intangible_2

Goodwill and Other Intangible Assets (Tables)	6 Months Ended
	Jun. 30, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Goodwill	Changes to the carrying amount of goodwill by reporting unit for the six months ended June 30, 2019 are provided in the following table. There were no changes to the carrying amount of goodwill during the year ended December 31, 2018 . (in thousands) Synovus Bank Reporting Unit Trust Services Reporting Unit Total Balance as of December 31, 2018 $ 32,884 $ 24,431 $ 57,315 Goodwill acquired during the year (preliminary allocation) and adjustments 435,075 — 435,075 Balance as of June 30, 2019 $ 467,959 $ 24,431 $ 492,390
Schedule of Finite-Lived Intangible Assets	The following table shows the gross carrying amount and accumulated amortization of other intangible assets as of June 30, 2019 and December 31, 2018 , which primarily consist of core deposit intangible assets acquired in the FCB acquisition. Core deposit intangible assets were $52.2 million at June 30, 2019 . The CDI is being amortized over its estimated useful life of approximately ten years utilizing an accelerated method. Amortization expense recognized on intangible assets for the three and six months ended June 30, 2019 , was $2.4 million and $5.8 million , respectively. Amortization expense recognized on intangible assets for the three and six months ended June 30, 2018 was $292 thousand and $583 thousand , respectively. (in thousands) June 30, 2019 December 31, 2018 Other intangible assets, gross carrying amount $ 70,328 $ 12,928 Other intangible assets, accumulated amortization (8,855 ) (3,053 ) Other intangible assets, net carrying amount $ 61,473 $ 9,875

Shareholders' Equity and Othe_2

Shareholders' Equity and Other Comprehensive Income (Loss) (Tables)	6 Months Ended
	Jun. 30, 2019
Equity [Abstract]
Schedule of Changes in Accumulated Other Comprehensive Income (Loss) by Component (Net of Income Taxes)	The following tables illustrate activity within the balances in accumulated other comprehensive income (loss) by component for the three and six months ended June 30, 2019 and 2018 . Changes in Accumulated Other Comprehensive Income (Loss) by Component (Net of Income Taxes) (in thousands) Net unrealized losses on cash flow hedges (1) Net unrealized gains (losses) on investment securities available for sale (1) Post-retirement unfunded health benefit Total Balance, April 1, 2019 $ (12,137 ) $ (7,071 ) $ 866 $ (18,342 ) Other comprehensive income (loss) before reclassifications — 66,290 — 66,290 Amounts reclassified from AOCI — 1,367 (26 ) 1,341 Net current period other comprehensive income (loss) — 67,657 (26 ) 67,631 Balance, June 30, 2019 $ (12,137 ) $ 60,586 $ 840 $ 49,289 Balance, April 1, 2018 $ (12,137 ) $ (96,647 ) $ 1,007 $ (107,777 ) Other comprehensive income (loss) before reclassifications — (18,878 ) — (18,878 ) Amounts reclassified from AOCI — 960 (25 ) 935 Net current period other comprehensive income (loss) — (17,918 ) (25 ) (17,943 ) Balance, June 30, 2018 $ (12,137 ) $ (114,565 ) $ 982 $ (125,720 ) Balance, January 1, 2019 $ (12,137 ) $ (83,179 ) $ 896 $ (94,420 ) Other comprehensive income (loss) before reclassifications — 142,453 — 142,453 Amounts reclassified from AOCI — 1,312 (56 ) 1,256 Net current period other comprehensive income (loss) — 143,765 (56 ) 143,709 Balance, June 30, 2019 $ (12,137 ) $ 60,586 $ 840 $ 49,289 Balance, December 31, 2017 $ (12,137 ) $ (43,470 ) $ 853 $ (54,754 ) Reclassification from adoption of ASU 2018-02 — (7,763 ) 175 (7,588 ) Cumulative-effect adjustment from adoption of ASU 2016-01 — 117 — 117 Other comprehensive income (loss) before reclassifications — (64,409 ) — (64,409 ) Amounts reclassified from AOCI — 960 (46 ) 914 Net current period other comprehensive income (loss) — (63,449 ) (46 ) (63,495 ) Balance, June 30, 2018 $ (12,137 ) $ (114,565 ) $ 982 $ (125,720 ) (1) In accordance with ASC 740-20-45-11(b), in 2010 and 2011, Synovus recorded a deferred tax asset valuation allowance associated with net unrealized losses not recognized in income directly to other comprehensive income (loss) by applying the portfolio approach which treats derivative instruments and available for sale securities as a single portfolio. For all periods presented, the ending balance in net unrealized gains (losses) on cash flow hedges and investment securities available for sale includes unrealized losses of $12.1 million and $13.3 million , respectively, related to the residual tax effects remaining in OCI due to the previously established deferred tax asset valuation allowance. Under the portfolio approach, these unrealized losses are realized at the time the entire portfolio is sold or disposed.

Fair Value Accounting (Tables)

Fair Value Accounting (Tables)	6 Months Ended
	Jun. 30, 2019
Fair Value Disclosures [Abstract]
Financial Instruments Measured at Fair Value on Recurring Basis	The following tables present all financial instruments measured at fair value on a recurring basis as of June 30, 2019 and December 31, 2018 . June 30, 2019 (in thousands) Level 1 Level 2 Level 3 Total Assets and Liabilities at Fair Value Assets Trading securities: U.S. Government agency securities $ — $ 31 $ — $ 31 Mortgage-backed securities issued by U.S. Government agencies — 3,504 — 3,504 Collateralized mortgage obligations issued by U.S. Government sponsored enterprises — 999 — 999 Other mortgage-backed securities — 1,464 — 1,464 State and municipal securities — 382 — 382 Corporate debt securities — 77 — 77 Total trading securities $ — $ 6,457 $ — $ 6,457 Investment securities available for sale: U.S. Treasury securities $ 19,689 $ — $ — $ 19,689 U.S. Government agency securities — 65,687 — 65,687 Mortgage-backed securities issued by U.S. Government agencies — 88,277 — 88,277 Mortgage-backed securities issued by U.S. Government sponsored enterprises — 4,948,671 — 4,948,671 Collateralized mortgage obligations issued by U.S. Government agencies or sponsored enterprises — 862,533 — 862,533 Commercial mortgage-backed securities issued by U.S. Government sponsored enterprises — 368,443 — 368,443 State and municipal securities — 2,100 — 2,100 Asset-backed securities — 505,117 — 505,117 Corporate debt securities — 144,478 2,017 146,495 Total investment securities available for sale $ 19,689 $ 6,985,306 $ 2,017 $ 7,007,012 Mortgage loans held for sale — 81,855 — 81,855 Private equity investments — — 13,341 13,341 Mutual funds 16,390 — — 16,390 Mutual funds held in rabbi trusts 14,816 — — 14,816 GGL/SBA loans servicing asset — — 3,326 3,326 Derivative assets: Interest rate contracts $ — $ 134,504 $ — $ 134,504 Mortgage derivatives (1) — 1,892 — 1,892 Total derivative assets $ — $ 136,396 $ — $ 136,396 Liabilities Earnout liability (2) — — 14,353 14,353 Derivative liabilities: Interest rate contracts $ — $ 32,193 $ — $ 32,193 Mortgage derivatives (1) — 1,049 — 1,049 Visa derivative — — 1,049 1,049 Total derivative liabilities $ — $ 33,242 $ 1,049 $ 34,291 December 31, 2018 (in thousands) Level 1 Level 2 Level 3 Total Assets and Liabilities at Fair Value Assets Trading securities: U.S. Government agency securities $ — $ 44 $ — $ 44 State and municipal securities — 1,064 — 1,064 Other investments 1,128 894 — 2,022 Total trading securities $ 1,128 $ 2,002 $ — $ 3,130 Investment securities available for sale: U.S. Treasury securities $ 122,077 $ — $ — $ 122,077 U.S. Government agency securities — 38,382 — 38,382 Mortgage-backed securities issued by U.S. Government agencies — 97,205 — 97,205 Mortgage-backed securities issued by U.S. Government sponsored enterprises — 2,398,650 — 2,398,650 Collateralized mortgage obligations issued by U.S. Government agencies or sponsored enterprises — 1,188,518 — 1,188,518 Commercial mortgage-backed securities issued by U.S. Government sponsored enterprises — 129,865 — 129,865 Corporate debt securities — 15,150 1,785 16,935 Total investment securities available for sale $ 122,077 $ 3,867,770 $ 1,785 $ 3,991,632 Mortgage loans held for sale — 37,129 — 37,129 Private equity investments — — 11,028 11,028 Mutual funds 3,168 — — 3,168 Mutual funds held in rabbi trusts 12,844 — — 12,844 GGL/SBA loans servicing asset — — 3,729 3,729 Derivative assets: Interest rate contracts $ — $ 18,388 $ — $ 18,388 Mortgage derivatives (1) — 944 — 944 Total derivative assets $ — $ 19,332 $ — $ 19,332 Liabilities Earnout liability (2) — — 14,353 14,353 Derivative liabilities: Interest rate contracts $ — $ 15,716 $ — $ 15,716 Mortgage derivatives (1) — 819 — 819 Visa derivative — — 1,673 1,673 Total derivative liabilities $ — $ 16,535 $ 1,673 $ 18,208 (1) Mortgage derivatives consist of customer interest rate lock commitments that relate to the potential origination of mortgage loans, which would be classified as held for sale and forward loan sales commitments with third-party investors. (2) Earnout liability consists of contingent consideration obligation related to the Global One acquisition.
Changes in Fair Value Included in Consolidated Statements of Income	The following table summarizes the difference between the fair value and the unpaid principal balance of mortgage loans held for sale measured at fair value and the changes in fair value of these loans. An immaterial portion of these changes in fair value was attributable to changes in instrument-specific credit risk. Mortgage Loans Held for Sale (in thousands) As of June 30, 2019 As of December 31, 2018 Fair value $ 81,855 $ 37,129 Unpaid principal balance 79,873 35,848 Fair value less aggregate unpaid principal balance $ 1,982 $ 1,281 Changes in Fair Value Included in Net Income Three Months Ended June 30, Six Months Ended June 30, (in thousands) 2019 2018 2019 2018 Mortgage loans held for sale $ 345 $ 40 $ 701 $ 155
Changes in Level 3 Fair Value Measurements	Three Months Ended June 30, 2019 (in thousands) Investment Securities Available for Sale Private Equity Investments GGL / SBA Loans Servicing Asset Earnout Visa Derivative Beginning balance, April 1, 2019 $ 1,981 $ 11,886 $ 3,447 $ (14,353 ) $ (1,366 ) Total gains (losses) realized/unrealized: Included in earnings — 1,455 (305 ) — — Unrealized gains (losses) included in OCI 36 — — — — Additions — — 184 — — Settlements — — — — 317 Ending balance, June 30, 2019 $ 2,017 $ 13,341 $ 3,326 $ (14,353 ) $ (1,049 ) Total net gains for the period included in earnings attributable to the change in unrealized gains/(losses) relating to assets/liabilities still held at June 30, 2019 $ — $ 1,455 $ — $ — $ — Three Months Ended June 30, 2018 (in thousands) Investment Securities Available for Sale Private Equity Investments GGL / SBA Earnout Visa Derivative Beginning balance, April 1, 2018 $ 1,852 $ 12,715 $ 3,971 $ (11,348 ) $ (3,974 ) Total (losses) gains realized/unrealized: Included in earnings — (37 ) (312 ) — (2,328 ) Unrealized gains (losses) included in OCI 5 — — — — Additions — — 527 — — Settlements — — — — 359 Ending balance, June 30, 2018 $ 1,857 $ 12,678 $ 4,186 $ (11,348 ) $ (5,943 ) Total net losses for the period included in earnings attributable to the change in unrealized losses relating to assets/liabilities still held at June 30, 2018 $ — $ (37 ) $ — $ — $ (2,328 ) Six Months Ended June 30, 2019 (in thousands) Investment Securities Available for Sale Private Equity Investments GGL / SBA Earnout Visa Derivative Beginning balance, January 1, 2019 $ 1,785 $ 11,028 $ 3,729 $ (14,353 ) $ (1,673 ) Total gains (losses) realized/unrealized: Included in earnings — 2,313 (793 ) — — Unrealized gains (losses) included in OCI 232 — — — — Additions — — 390 — — Settlements — — — — 624 Ending balance, June 30, 2019 $ 2,017 $ 13,341 $ 3,326 $ (14,353 ) $ (1,049 ) Total net losses for the period included in earnings attributable to the change in unrealized losses relating to assets/liabilities still held at June 30, 2019 $ — $ 2,313 $ — $ — $ — Six Months Ended June 30, 2018 (in thousands) Investment Securities Available for Sale Private Equity Investments GGL / SBA Earnout Visa Derivative Beginning balance, January 1, 2018 $ 1,935 $ 15,771 $ 4,101 $ (11,348 ) $ (4,330 ) Total (losses) gains realized/unrealized: Included in earnings — (3,093 ) (734 ) — (2,328 ) Unrealized gains (losses) included in OCI (78 ) — — — — Additions — — 819 — — Sales and settlements — — — — 715 Ending balance, June 30, 2018 $ 1,857 $ 12,678 $ 4,186 $ (11,348 ) $ (5,943 ) Total net losses for the period included in earnings attributable to the change in unrealized losses relating to assets/liabilities still held at June 30, 2018 $ — $ (3,093 ) $ — $ — $ (2,328 )
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 during the period. June 30, 2019 December 31, 2018 (in thousands) Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Impaired loans (1) $ — $ — $ 1,540 $ 1,540 $ — $ — $ 21,742 $ 21,742 Other loans held for sale — — — — — — 1,494 1,494 Other real estate — — 2,332 2,332 — — 3,827 3,827 Other assets held for sale — — 350 350 — — 1,104 1,104 (1) Collateral-dependent impaired loans that were written down to fair value during the period.
Assets Measured at Fair Value on a Nonrecurring Basis	The following table presents fair value adjustments recognized in earnings for the three and six months ended June 30, 2019 and 2018 for assets measured at fair value on a non-recurring basis still held at period-end. Three Months Ended June 30, Six Months Ended June 30, (in thousands) 2019 2018 2019 2018 Impaired loans (1) $ — $ 6,828 $ 2,625 $ 7,548 Other real estate 612 — 624 — Other assets held for sale — 499 91 499 (1) Collateral-dependent impaired loans that were written down to fair value during the period.
Carrying and Estimated Fair Values of Financial Instruments Carried on Balance Sheet	The following tables present the carrying and fair values of financial instruments at June 30, 2019 and December 31, 2018 . The fair values represent management’s estimates based on various methodologies and assumptions. See "Part II - Item 8. Financial Statements and Supplementary Data - Note 1 - Summary of Significant Accounting Policies" to the consolidated financial statements of Synovus' 2018 Form 10-K for a description of how fair value measurements are determined. June 30, 2019 (in thousands) Carrying Value Fair Value Level 1 Level 2 Level 3 Financial assets Total cash, cash equivalents, restricted cash, and restricted cash equivalents $ 1,151,321 $ 1,151,321 $ 1,151,321 $ — $ — Trading securities 6,457 6,457 — 6,457 — Investment securities available for sale 7,007,012 7,007,012 19,689 6,985,306 2,017 Mortgage loans held for sale 81,855 81,855 — 81,855 — Other loans held for sale 4,861 4,861 — — 4,861 Private equity investments 13,341 13,341 — — 13,341 Mutual funds 16,390 16,390 16,390 — — Mutual funds held in rabbi trusts 14,816 14,816 14,816 — — Loans, net 35,881,185 35,674,964 — — 35,674,964 GGL/SBA loans servicing asset 3,326 3,326 — — 3,326 Derivative assets 136,396 136,396 — 136,396 — Financial liabilities Non-interest-bearing deposits $ 9,205,066 $ 9,205,066 $ — $ 9,205,066 $ — Non-time interest-bearing deposits 18,264,053 18,264,053 — 18,264,053 — Time deposits 10,497,603 10,542,659 — 10,542,659 — Total deposits $ 37,966,722 $ 38,011,778 $ — $ 38,011,778 $ — Federal funds purchased and securities sold under repurchase agreements 273,481 273,481 273,481 — — Other short-term borrowings 1,330,000 1,330,000 — 1,330,000 — Long-term debt 2,306,072 2,334,573 — 2,334,573 — Earnout liability 14,353 14,353 — — 14,353 Derivative liabilities 34,291 34,291 — 33,242 1,049 December 31, 2018 (in thousands) Carrying Value Fair Value Level 1 Level 2 Level 3 Financial assets Total cash, cash equivalents, restricted cash, and restricted cash equivalents $ 1,143,564 $ 1,143,564 $ 1,143,564 $ — $ — Trading securities 3,130 3,130 1,128 2,002 — Investment securities available for sale 3,991,632 3,991,632 122,077 3,867,770 1,785 Mortgage loans held for sale 37,129 37,129 — 37,129 — Other loans for sale 1,506 1,506 — — 1,506 Private equity investments 11,028 11,028 — — 11,028 Mutual funds 3,168 3,168 3,168 — — Mutual funds held in rabbi trusts 12,844 12,844 12,844 — — Loans, net 25,696,018 25,438,890 — — 25,438,890 GGL/SBA loans servicing asset 3,729 3,729 — — 3,729 Derivative assets 19,332 19,332 — 19,332 — Financial liabilities Non-interest-bearing deposits $ 7,650,967 $ 7,650,967 $ — $ 7,650,967 $ — Non-time interest-bearing deposits 14,065,959 14,065,959 — 14,065,959 — Time deposits 5,003,396 4,989,570 — 4,989,570 — Total deposits $ 26,720,322 $ 26,706,496 $ — $ 26,706,496 $ — Federal funds purchased and securities sold under repurchase agreements 237,692 237,692 237,692 — — Other short-term borrowings 650,000 650,000 — 650,000 — Long-term debt 1,657,157 1,649,642 — 1,649,642 — Earnout liability 14,353 14,353 — — 14,353 Derivative liabilities 18,208 18,208 — 16,535 1,673

Derivative Instruments (Tables)

Derivative Instruments (Tables)	6 Months Ended
	Jun. 30, 2019
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. June 30, 2019 December 31, 2018 Fair Value Fair Value (in thousands) Notional Amount Derivative Assets (1) Derivative Liabilities (2) Notional Amount Derivative Assets (1) Derivative Liabilities (2) Derivatives not designated Interest rate contracts (3) $ 5,799,682 $ 134,504 $ 32,193 $ 1,840,288 18,388 $ 15,716 Mortgage derivatives - interest rate lock commitments 119,590 1,892 — 52,420 944 — Mortgage derivatives - forward commitments to sell fixed-rate mortgage loans 127,519 — 1,049 65,500 — 819 Visa derivative — — 1,049 — — 1,673 Total derivatives not designated as hedging instruments $ 136,396 $ 34,291 $ 19,332 $ 18,208 (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 customer swaps and offsetting positions, net of variation margin payments.
Effect of Fair Value Hedges on 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 three and six months ended June 30, 2019 and 2018 is presented below. Gain (Loss) Recognized in Consolidated Statements of Income Three Months Ended June 30, Six Months Ended June 30, (in thousands) Location in Consolidated Statements of Income 2019 2018 2019 2018 Derivatives not designated as hedging instruments: Interest rate contracts (1) Capital markets income $ 221 $ (16 ) $ 91 $ (9 ) Mortgage derivatives - interest rate lock commitments Mortgage banking income 255 (369 ) 948 366 Mortgage derivatives - forward commitments to sell fixed-rate mortgage loans Mortgage banking income (243 ) (311 ) (229 ) (119 ) Total derivatives not designated as hedging instruments $ 233 $ (696 ) $ 810 $ 238 (1) Gain (loss) represents net fair value adjustments (including credit-related adjustments and interest settlements on variation margin payments) for customer swaps and offsetting positions.

Net Income Per Common Share (Ta

Net Income Per Common Share (Tables)	6 Months Ended
	Jun. 30, 2019
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 earnings per common share for the three and six months ended June 30, 2019 and 2018 . Three Months Ended June 30, Six Months Ended June 30, (in thousands, except per share data) 2019 2018 2019 2018 Basic Net Income Per Common Share: Net income available to common shareholders $ 153,034 $ 108,622 $ 270,070 $ 209,229 Weighted average common shares outstanding 157,389 118,397 159,148 118,531 Net income per common share, basic $ 0.97 $ 0.92 $ 1.70 $ 1.77 Diluted Net Income Per Common Share: Net income available to common shareholders $ 153,034 $ 108,622 $ 270,070 $ 209,229 Weighted average common shares outstanding 157,389 118,397 159,148 118,531 Effect of dilutive outstanding equity-based awards, warrants, and earnout payments 1,688 742 1,760 698 Weighted average diluted common shares 159,077 119,139 160,908 119,229 Net income per common share, diluted $ 0.96 $ 0.91 $ 1.68 $ 1.75

Share-based Compensation (Table

Share-based Compensation (Tables)	6 Months Ended
	Jun. 30, 2019
Share-based Payment Arrangement [Abstract]
Share-based Compensation, Stock Options, Activity	The following tables summarize the status of Synovus' stock options, restricted share units, market restricted share units, and performance share units as of June 30, 2019 , and activity for the six months ended June 30, 2019 . Stock Options (in thousands, except per share amounts) Quantity Weighted-Average Exercise Price Per Share Outstanding at January 1, 2019 640 $ 16.93 Assumed 3,230 23.22 Exercised (461 ) 19.23 Outstanding at June 30, 2019 3,409 $ 22.58
Schedule of Nonvested Restricted Stock Units Activity	Restricted Share Units Market Restricted Share Units Performance Share Units (in thousands, except per share amounts) Quantity Weighted-Average Grant Date Fair Value Per Share Quantity Weighted-Average Grant Date Fair Value Per Share Quantity Weighted-Average Grant Date Fair Value Per Share Non-vested at January 1, 2019 526 $ 41.18 144 $ 41.91 248 $ 38.29 Granted 537 36.26 151 36.96 140 37.34 Assumed 136 31.99 — — — — Quantity change by TSR factor — — (18 ) 38.06 — — Dividend equivalents granted 10 36.26 2 36.96 10 37.34 Vested (292 ) 36.78 (55 ) 38.06 (93 ) 26.35 Forfeited (82 ) 36.14 (19 ) 40.94 (31 ) 40.65 Non-vested at June 30, 2019 835 $ 38.49 205 $ 39.68 274 $ 41.56
Share-based Compensation, Allocation of Recognized Period Costs	Total share-based compensation expense recognized for the three and six months ended June 30, 2019 and 2018 is presented in the following table by its classification within total non-interest expense. Three Months Ended June 30, Six Months Ended June 30, (in thousands) 2019 2018 2019 2018 Salaries and other personnel expense $ 5,405 $ 3,976 $ 11,713 $ 7,749 Merger-related expense 413 — 4,219 — Other operating expenses 163 389 293 571 Total share-based compensation expense included in non-interest expense $ 5,981 $ 4,365 $ 16,225 $ 8,320

Leases (Tables)

Leases (Tables)	6 Months Ended
	Jun. 30, 2019
Leases [Abstract]
Assets And Liabilities, Lessee	The following table presents the lease balances within the consolidated balance sheet as of June 30, 2019 . The difference between the asset and liability balance is primarily the result of lease liabilities that existed prior to the January 1, 2019 adoption of the new accounting guidance for leases. Leases (in thousands) Classification June 30, 2019 Assets Operating Other Assets $ 373,675 Finance Premises and Equipment, net (1) 3,233 Total leased assets $ 376,908 Liabilities Operating Other Liabilities 381,345 Finance Other Liabilities 3,050 Total lease liabilities $ 384,395 (1) Finance lease assets are recorded net of accumulated amortization of $448 thousand as of June 30, 2019 .
Lease, Cost	Supplemental cash flow information related to the Company's leasing activities for the six months ended June 30, 2019 are as follows: Other Information (in thousands) Six Months Ended June 30, 2019 Cash paid for amounts included in the measurement of lease liabilities Operating cash flows from operating leases $ (14,893 ) Operating cash flows from finance leases (39 ) Financing cash flows from finance leases (357 ) For the three and six months ended June 30, 2019 , the components of lease expense were as follows: Lease Cost (in thousands) Classification Three Months Ended June 30, 2019 Six Months Ended June 30, 2019 Operating lease cost, net (1) Net occupancy and equipment expense $ 8,137 $ 16,309 Finance lease cost Amortization of leased assets Net occupancy and equipment expense 224 448 Interest on lease liabilities Net occupancy and equipment expense 19 39 Sublease income (2) Net occupancy and equipment expense (157 ) (323 ) Net lease cost $ 8,223 $ 16,473 (1) Excludes variable and short-term lease costs, which are not material. (2) Sublease income excludes rental income from owned properties of $639 thousand and $1.2 million , respectively, for the three and six months ended June 30, 2019 , which is also included in net occupancy and equipment expenses.
Lease Term and Discount Rate, Lessee	The following table presents the weighted average remaining lease term and weighted average discount rates related to Synovus' leases as of June 30, 2019 : Lease Term and Discount Rate Weighted-average remaining lease term (years) Weighted-average discount rate (percentage) Operating leases 21.5 3.55 % Finance leases 4.2 2.44
Lessee, Operating Lease, Liability, Maturity	The following table presents the maturity of the Company’s lease liabilities as of June 30, 2019 : Maturity of Lease Liabilities (in thousands) Operating Leases Finance Leases Total 2019 $ 14,732 $ 494 $ 15,226 2020 29,437 871 30,308 2021 28,104 839 28,943 2022 27,369 465 27,834 2023 25,711 180 25,891 After 2023 434,340 343 434,683 Total lease payments $ 559,693 $ 3,192 $ 562,885 Less: Imputed interest 178,348 142 178,490 Present value of lease liabilities $ 381,345 $ 3,050 $ 384,395
Finance Lease, Liability, Maturity	The following table presents the maturity of the Company’s lease liabilities as of June 30, 2019 : Maturity of Lease Liabilities (in thousands) Operating Leases Finance Leases Total 2019 $ 14,732 $ 494 $ 15,226 2020 29,437 871 30,308 2021 28,104 839 28,943 2022 27,369 465 27,834 2023 25,711 180 25,891 After 2023 434,340 343 434,683 Total lease payments $ 559,693 $ 3,192 $ 562,885 Less: Imputed interest 178,348 142 178,490 Present value of lease liabilities $ 381,345 $ 3,050 $ 384,395

Commitments and Contingencies (

Commitments and Contingencies (Tables)	6 Months Ended
	Jun. 30, 2019
Commitments and Contingencies Disclosure [Abstract]
Loan Commitments and Letters of Credit	(in thousands) June 30, 2019 December 31, 2018 Letters of credit* $ 216,304 $ 157,675 Commitments to fund commercial and industrial loans 6,065,365 5,527,017 Commitments to fund commercial real estate, construction, and land development loans 3,020,509 2,034,223 Commitments under home equity lines of credit 1,419,312 1,258,657 Unused credit card lines 857,536 775,003 Other loan commitments 473,824 400,983 Total unfunded lending commitments and letters of credit $ 12,052,850 $ 10,153,558 Investments in low income housing tax credit partnerships: Carrying amount included in other assets $ 79,541 $ 83,736 Amount of future funding commitments included in carrying amount 28,382 47,123 Short-term construction loans and letter of credit commitments 259 1,585 Funded portion of short-term loans and letters of credit 2,822 5,595 * Represent the contractual amount net of risk participations of approximately $34 million and $46 million at June 30, 2019 and December 31, 2018 , respectively.

Basis of Presentation (Details)

Basis of Presentation (Details) $ in Thousands	Jun. 30, 2019USD ($)ATMbranch	Jan. 01, 2019USD ($)	Dec. 31, 2018USD ($)
Accounting Policies [Abstract]
Number of branches | branch	297
Number of ATMs | ATM	385
Operating lease, right-of-use asset	$ 373,675	$ 381,100
Operating lease, liability	381,345	391,000
Basis Of Presentation [Line Items]
Adjustment from adoption of ASU			$ 4,270
Assets finance	$ 3,233
Deferred gains on sale-leaseback transactions		3,900
Premises and Equipment
Basis Of Presentation [Line Items]
Assets finance		4,000
Retained Earnings
Basis Of Presentation [Line Items]
Adjustment from adoption of ASU			$ 4,270
Accounting Standards Update 2016-02 | Retained Earnings
Basis Of Presentation [Line Items]
Adjustment from adoption of ASU		$ 4,300

Acquisitions (Narrative) (Detai

Acquisitions (Narrative) (Details) $ / shares in Units, $ in Thousands	Jan. 01, 2019USD ($)branchshares	Oct. 01, 2016	Jun. 30, 2019USD ($)shares	Mar. 31, 2019USD ($)	Jun. 30, 2018USD ($)	Jun. 30, 2019USD ($)shares	Jun. 30, 2018USD ($)	Dec. 31, 2018USD ($)$ / sharesshares
Business Acquisition [Line Items]
Closing stock price (in dollars per share) | $ / shares								$ 31.99
Goodwill			$ 492,390			$ 492,390		$ 57,315
Merger-related expense			$ 7,401		$ 0	$ 57,140	$ 0
Common stock, shares issued (in shares) | shares			166,079,543			166,079,543		143,300,449
Common stock			$ 166,080			$ 166,080		$ 143,300
FCB Financial Holdings, Inc.
Business Acquisition [Line Items]
Consideration transferred	$ 1,626,278
Identifiable assets acquired	12,379,825
Loans	9,289,208
Deposits	$ 10,930,724
Service banking centers acquired | branch	51
Cash equivalents	$ 3,500
Stock issued in acquisitions (in shares) | shares	49,500,000
Synovus common stock issued and reissued from treasury	$ 1,582,133
Cash paid	601
Converted options and restricted share units, fair value	41,500
Share based awards allocated to purchase price	37,300
Warrants converted fair value	6,700
Goodwill	$ 435,075
Merger-related expense			7,401			57,140
Core deposits decrease			10,800	$ 10,800
Estimated useful life	10 years
FCB Financial Holdings, Inc. | Executives
Business Acquisition [Line Items]
Merger-related expense						21,800
FCB Financial Holdings, Inc. | FCB Financial Holdings, Inc.
Business Acquisition [Line Items]
Merger exchange ratio	1.055
Other equity compensation, non-vested shares outstanding (in shares)	$ 7,500
Merger-related expense						19,600
Global One
Business Acquisition [Line Items]
Increase in earnout liabilities							$ 11,700
Common stock, shares issued (in shares) | shares								199,000
Common stock								$ 7,400
Earnout payments, cash								$ 1,200
Earnout liability			$ 14,400			$ 14,400
Global One | Minimum
Business Acquisition [Line Items]
Period of additional annual payments		3 years
Global One | Maximum
Business Acquisition [Line Items]
Period of additional annual payments		5 years

Acquisitions (Assets Acquired a

Acquisitions (Assets Acquired and Liabilities Assumed) (Details) - USD ($) $ / shares in Units, $ in Thousands	Jan. 01, 2019	Jun. 30, 2019	Dec. 31, 2018
Liabilities
Preliminary goodwill		$ 492,390	$ 57,315
Closing stock price (in dollars per share)			$ 31.99
FCB Financial Holdings, Inc.
Business Acquisition [Line Items]
Synovus common stock issued and reissued from treasury attributed to purchase price	$ 1,582,133
Cash payments to FCB stockholders attributed to purchase price	173
Fair value of exchanged employee and director equity awards and FCB warrants attributed to purchase price	43,972
Total purchase price	1,626,278
Assets
Cash and cash equivalents	201,689
Investment securities available for sale	2,301,001
Loans	9,289,208
Cash surrender value of bank-owned life insurance	216,848
Premises and equipment	44,875
Core deposit intangible	57,400
Other assets	268,804
Total Assets	12,379,825
Liabilities
Deposits	10,930,724
Federal funds purchased and securities sold under repurchase agreements	29,139
Long-term debt	153,236
Other liabilities	75,523
Total Liabilities	11,188,622
Fair value of net identifiable assets acquired	1,191,203
Preliminary goodwill	435,075
Cash paid	$ 601

Acquisitions (Pro Forma) (Detai

Acquisitions (Pro Forma) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Business Acquisition [Line Items]
Actual, Net interest income	$ 397,262	$ 284,577	$ 794,438	$ 558,861
Actual, Non-interest income	89,807	73,387	169,185	140,433
Actual, Net income available to common shareholders	153,034	108,622	270,070	209,229
Merger-related expense	7,401	$ 0	57,140	0
FCB Financial Holdings, Inc.
Business Acquisition [Line Items]
Actual, Net interest income			794,438
Pro Forma, Net interest income				760,304
Actual, Non-interest income			169,185
Pro Forma, Non-interest income				155,610
Actual, Net income available to common shareholders			270,070
Pro Forma, Net income available to common shareholders				$ 309,786
Merger-related expense	$ 7,401		$ 57,140

Acquisitions (Acquisition Relat

Acquisitions (Acquisition Related Costs) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Business Acquisition [Line Items]
Total merger-related expense	$ 7,401	$ 0	$ 57,140	$ 0
FCB Financial Holdings, Inc.
Business Acquisition [Line Items]
Total merger-related expense	7,401		57,140
FCB Financial Holdings, Inc. | Employment compensation agreements, severance, and other employee benefit costs
Business Acquisition [Line Items]
Total merger-related expense	1,774		34,762
FCB Financial Holdings, Inc. | Professional fees
Business Acquisition [Line Items]
Total merger-related expense	1,791		16,991
FCB Financial Holdings, Inc. | All other expense
Business Acquisition [Line Items]
Total merger-related expense	$ 3,836		$ 5,387

Investment Securities Availab_3

Investment Securities Available for Sale (Summary Of Available For Sale Investment Securities) (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 6,907,281	$ 4,085,913
Gross Unrealized Gains	113,676	6,274
Gross Unrealized Losses	(13,945)	(100,555)
Fair Value	7,007,012	3,991,632
U.S. Treasury securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	19,689	123,436
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	(1,359)
Fair Value	19,689	122,077
U.S. Government agency securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	64,070	38,021
Gross Unrealized Gains	1,617	361
Gross Unrealized Losses	0	0
Fair Value	65,687	38,382
Mortgage-backed securities issued by U.S. Government agencies
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	88,677	100,060
Gross Unrealized Gains	367	172
Gross Unrealized Losses	(767)	(3,027)
Fair Value	88,277	97,205
Mortgage-backed securities issued by U.S. Government sponsored enterprises
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	4,873,285	2,460,498
Gross Unrealized Gains	84,794	1,981
Gross Unrealized Losses	(9,408)	(63,829)
Fair Value	4,948,671	2,398,650
Collateralized mortgage obligations issued by U.S. Government agencies or sponsored enterprises
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	859,235	1,215,406
Gross Unrealized Gains	6,391	2,997
Gross Unrealized Losses	(3,093)	(29,885)
Fair Value	862,533	1,188,518
Commercial mortgage-backed securities issued by U.S. Government sponsored enterprises
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	354,104	131,492
Gross Unrealized Gains	14,339	613
Gross Unrealized Losses	0	(2,240)
Fair Value	368,443	129,865
State and municipal securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	2,107
Gross Unrealized Gains	0
Gross Unrealized Losses	(7)
Fair Value	2,100
Asset-backed securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	501,713
Gross Unrealized Gains	4,044
Gross Unrealized Losses	(640)
Fair Value	505,117
Corporate debt securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	144,401	17,000
Gross Unrealized Gains	2,124	150
Gross Unrealized Losses	(30)	(215)
Fair Value	$ 146,495	$ 16,935

Investment Securities Availab_4

Investment Securities Available for Sale (Narrative) (Details) $ in Millions	Jun. 30, 2019USD ($)securities	Dec. 31, 2018USD ($)
Financing Receivable, Impaired [Line Items]
Investment securities in a loss position for less than twelve months	21
Investment securities in a loss position for twelve months or longer	69
Collateral Pledged
Financing Receivable, Impaired [Line Items]
Pledged to secure deposits | $	$ 1,590	$ 1,560

Investment Securities Availab_5

Investment Securities Available for Sale (Schedule Of Unrealized Loss On Investments) (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Debt Securities, Available-for-sale [Line Items]
Less than 12 Months, Fair Value	$ 191,077	$ 230,520
Less than 12 Months, Unrealized Losses	(717)	(2,118)
12 Months or Longer, Fair Value	1,620,399	3,259,401
12 Months or Longer, Unrealized Losses	(13,228)	(98,437)
Total Fair Value, Fair Value	1,811,476	3,489,921
Total Fair Value, Unrealized Losses	(13,945)	(100,555)
U.S. Treasury securities
Debt Securities, Available-for-sale [Line Items]
Less than 12 Months, Fair Value		39,031
Less than 12 Months, Unrealized Losses		(118)
12 Months or Longer, Fair Value		63,570
12 Months or Longer, Unrealized Losses		(1,241)
Total Fair Value, Fair Value		102,601
Total Fair Value, Unrealized Losses		(1,359)
Mortgage-backed securities issued by U.S. Government agencies
Debt Securities, Available-for-sale [Line Items]
Less than 12 Months, Fair Value	626	2,059
Less than 12 Months, Unrealized Losses	(4)	(2)
12 Months or Longer, Fair Value	61,656	79,736
12 Months or Longer, Unrealized Losses	(763)	(3,025)
Total Fair Value, Fair Value	62,282	81,795
Total Fair Value, Unrealized Losses	(767)	(3,027)
Mortgage-backed securities issued by U.S. Government sponsored enterprises
Debt Securities, Available-for-sale [Line Items]
Less than 12 Months, Fair Value	10,523	130,432
Less than 12 Months, Unrealized Losses	(15)	(700)
12 Months or Longer, Fair Value	1,213,574	2,105,358
12 Months or Longer, Unrealized Losses	(9,393)	(63,129)
Total Fair Value, Fair Value	1,224,097	2,235,790
Total Fair Value, Unrealized Losses	(9,408)	(63,829)
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	44,539	0
Less than 12 Months, Unrealized Losses	(21)	0
12 Months or Longer, Fair Value	345,169	964,732
12 Months or Longer, Unrealized Losses	(3,072)	(29,885)
Total Fair Value, Fair Value	389,708	964,732
Total Fair Value, Unrealized Losses	(3,093)	(29,885)
Commercial mortgage-backed securities issued by U.S. Government sponsored enterprises
Debt Securities, Available-for-sale [Line Items]
Less than 12 Months, Fair Value		58,998
Less than 12 Months, Unrealized Losses		(1,298)
12 Months or Longer, Fair Value		44,220
12 Months or Longer, Unrealized Losses		(942)
Total Fair Value, Fair Value		103,218
Total Fair Value, Unrealized Losses		(2,240)
State and municipal securities
Debt Securities, Available-for-sale [Line Items]
Less than 12 Months, Fair Value	1,599
Less than 12 Months, Unrealized Losses	(7)
12 Months or Longer, Fair Value	0
12 Months or Longer, Unrealized Losses	0
Total Fair Value, Fair Value	1,599
Total Fair Value, Unrealized Losses	(7)
Asset-backed securities
Debt Securities, Available-for-sale [Line Items]
Less than 12 Months, Fair Value	124,312
Less than 12 Months, Unrealized Losses	(640)
12 Months or Longer, Fair Value	0
12 Months or Longer, Unrealized Losses	0
Total Fair Value, Fair Value	124,312
Total Fair Value, Unrealized Losses	(640)
Corporate debt securities
Debt Securities, Available-for-sale [Line Items]
Less than 12 Months, Fair Value	9,478	0
Less than 12 Months, Unrealized Losses	(30)	0
12 Months or Longer, Fair Value	0	1,785
12 Months or Longer, Unrealized Losses	0	(215)
Total Fair Value, Fair Value	9,478	1,785
Total Fair Value, Unrealized Losses	$ (30)	$ (215)

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	Jun. 30, 2019	Dec. 31, 2018
Amortized Cost
Within One year, Amortized Cost	$ 20,480
1 to 5 Years, Amortized Cost	182,797
5 to 10 Years, Amortized Cost	1,140,211
More Than 10 years, Amortized Cost	5,563,793
Amortized Cost	6,907,281	$ 4,085,913
Fair Value
Within One Year, Fair Value	20,482
1 to 5 Years, Fair Value	184,515
5 to 10 Years, Fair Value	1,157,687
More Than 10 years, Fair Value	5,644,328
Total, Fair Value	7,007,012	3,991,632
U.S. Treasury securities
Amortized Cost
Within One year, Amortized Cost	19,689
1 to 5 Years, Amortized Cost	0
5 to 10 Years, Amortized Cost	0
More Than 10 years, Amortized Cost	0
Amortized Cost	19,689	123,436
Fair Value
Within One Year, Fair Value	19,689
1 to 5 Years, Fair Value	0
5 to 10 Years, Fair Value	0
More Than 10 years, Fair Value	0
Total, Fair Value	19,689	122,077
U.S. Government agency securities
Amortized Cost
Within One year, Amortized Cost	791
1 to 5 Years, Amortized Cost	2,100
5 to 10 Years, Amortized Cost	61,179
More Than 10 years, Amortized Cost	0
Amortized Cost	64,070	38,021
Fair Value
Within One Year, Fair Value	793
1 to 5 Years, Fair Value	2,107
5 to 10 Years, Fair Value	62,787
More Than 10 years, Fair Value	0
Total, Fair Value	65,687	38,382
Mortgage-backed securities issued by U.S. Government agencies
Amortized Cost
Within One year, Amortized Cost	0
1 to 5 Years, Amortized Cost	809
5 to 10 Years, Amortized Cost	16,111
More Than 10 years, Amortized Cost	71,757
Amortized Cost	88,677	100,060
Fair Value
Within One Year, Fair Value	0
1 to 5 Years, Fair Value	810
5 to 10 Years, Fair Value	16,022
More Than 10 years, Fair Value	71,445
Total, Fair Value	88,277	97,205
Mortgage-backed securities issued by U.S. Government sponsored enterprises
Amortized Cost
Within One year, Amortized Cost	0
1 to 5 Years, Amortized Cost	43,477
5 to 10 Years, Amortized Cost	467,320
More Than 10 years, Amortized Cost	4,362,488
Amortized Cost	4,873,285	2,460,498
Fair Value
Within One Year, Fair Value	0
1 to 5 Years, Fair Value	43,479
5 to 10 Years, Fair Value	469,441
More Than 10 years, Fair Value	4,435,751
Total, Fair Value	4,948,671	2,398,650
Collateralized mortgage obligations issued by U.S. Government agencies or sponsored enterprises
Amortized Cost
Within One year, Amortized Cost	0
1 to 5 Years, Amortized Cost	0
5 to 10 Years, Amortized Cost	370
More Than 10 years, Amortized Cost	858,865
Amortized Cost	859,235
Fair Value
Within One Year, Fair Value	0
1 to 5 Years, Fair Value	0
5 to 10 Years, Fair Value	377
More Than 10 years, Fair Value	862,156
Total, Fair Value	862,533
Commercial mortgage-backed securities issued by U.S. Government sponsored enterprises
Amortized Cost
Within One year, Amortized Cost	0
1 to 5 Years, Amortized Cost	22,699
5 to 10 Years, Amortized Cost	236,738
More Than 10 years, Amortized Cost	94,667
Amortized Cost	354,104	131,492
Fair Value
Within One Year, Fair Value	0
1 to 5 Years, Fair Value	23,158
5 to 10 Years, Fair Value	246,337
More Than 10 years, Fair Value	98,948
Total, Fair Value	368,443	129,865
State and municipal securities
Amortized Cost
Within One year, Amortized Cost	0
1 to 5 Years, Amortized Cost	0
5 to 10 Years, Amortized Cost	1,084
More Than 10 years, Amortized Cost	1,023
Amortized Cost	2,107
Fair Value
Within One Year, Fair Value	0
1 to 5 Years, Fair Value	0
5 to 10 Years, Fair Value	1,078
More Than 10 years, Fair Value	1,022
Total, Fair Value	2,100
Asset-backed securities
Amortized Cost
Within One year, Amortized Cost	0
1 to 5 Years, Amortized Cost	4,496
5 to 10 Years, Amortized Cost	324,224
More Than 10 years, Amortized Cost	172,993
Amortized Cost	501,713
Fair Value
Within One Year, Fair Value	0
1 to 5 Years, Fair Value	4,607
5 to 10 Years, Fair Value	327,521
More Than 10 years, Fair Value	172,989
Total, Fair Value	505,117
Corporate debt securities
Amortized Cost
Within One year, Amortized Cost	0
1 to 5 Years, Amortized Cost	109,216
5 to 10 Years, Amortized Cost	33,185
More Than 10 years, Amortized Cost	2,000
Amortized Cost	144,401	17,000
Fair Value
Within One Year, Fair Value	0
1 to 5 Years, Fair Value	110,354
5 to 10 Years, Fair Value	34,124
More Than 10 years, Fair Value	2,017
Total, Fair Value	$ 146,495	$ 16,935

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	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019		Jun. 30, 2018
Investments [Abstract]
Proceeds from sales of investment securities available for sale	$ 104,434	$ 35,066	$ 1,292,673	[1]	$ 35,066
Gross realized gains on sales	0	0	9,129		0
Gross realized losses on sales	(1,845)	(1,296)	(10,900)		(1,296)
Investment securities losses, net	$ (1,845)	$ (1,296)	$ (1,771)	[1]	$ (1,296)
[1]	Where applicable, changes for balances as of June 30, 2019, compared to December 31, 2018, exclude amounts acquired on the Acquisition Date. See accompanying notes to unaudited interim consolidated financial statements.

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	Jun. 30, 2019	Jan. 01, 2019	Dec. 31, 2018	Jun. 30, 2018
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	$ 36,138,561		$ 25,946,573
Non-accrual	117,071		106,733
Total loans	27,381,026		25,970,716	$ 25,156,773
Deferred fees and costs, net	(23,600)		(24,100)	$ (22,700)
FCB Financial Holdings, Inc.
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Non-accrual	229
ASC 310-30 Loans	6,730,740	$ 1,066,689
Discount/Premium	(137,908)
Total loans	8,781,091
Loans		$ 9,289,208
Total commercial and industrial
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Non-accrual	80,130		78,266
Total loans	13,167,614		12,781,206
Total commercial and industrial | FCB Financial Holdings, Inc.
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Non-accrual	0
ASC 310-30 Loans	2,276,383
Discount/Premium	(21,012)
Total loans	3,079,929
Total commercial and industrial | Commercial, financial and agricultural
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Non-accrual	68,573		69,295
Total loans	7,801,210		7,449,698
Total commercial and industrial | Commercial, financial and agricultural | FCB Financial Holdings, Inc.
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Non-accrual	0
ASC 310-30 Loans	1,177,713
Discount/Premium	(16,166)
Total loans	1,916,536
Total commercial and industrial | Owner-occupied
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Non-accrual	11,557		8,971
Total loans	5,366,404		5,331,508
Total commercial and industrial | Owner-occupied | FCB Financial Holdings, Inc.
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Non-accrual	0
ASC 310-30 Loans	1,098,670
Discount/Premium	(4,846)
Total loans	1,163,393
Total commercial real estate
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Non-accrual	5,152		7,715
Total loans	6,935,842		6,564,491
Total commercial real estate | FCB Financial Holdings, Inc.
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Non-accrual	174
ASC 310-30 Loans	2,270,401
Discount/Premium	(23,856)
Total loans	3,412,605
Total commercial real estate | Investment properties
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Non-accrual	799		2,381
Total loans	5,927,706		5,560,951
Total commercial real estate | Investment properties | FCB Financial Holdings, Inc.
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Non-accrual	0
ASC 310-30 Loans	2,105,867
Discount/Premium	(19,563)
Total loans	3,077,394
Total commercial real estate | 1-4 family properties
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Non-accrual	1,618		2,381
Total loans	643,448		679,870
Total commercial real estate | 1-4 family properties | FCB Financial Holdings, Inc.
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Non-accrual	174
ASC 310-30 Loans	55,192
Discount/Premium	(1,119)
Total loans	103,942
Total commercial real estate | Land and development
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Non-accrual	2,735		2,953
Total loans	364,688		323,670
Total commercial real estate | Land and development | FCB Financial Holdings, Inc.
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Non-accrual	0
ASC 310-30 Loans	109,342
Discount/Premium	(3,174)
Total loans	231,269
Total consumer
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Non-accrual	31,789		20,752
Total loans	7,277,570		6,625,019
Total consumer | FCB Financial Holdings, Inc.
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Non-accrual	55
ASC 310-30 Loans	2,183,956
Discount/Premium	(93,040)
Total loans	2,288,557
Total consumer | Consumer mortgages
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Non-accrual	13,628		4,949
Total loans	3,194,027		2,934,235
Total consumer | Consumer mortgages | FCB Financial Holdings, Inc.
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Non-accrual	0
ASC 310-30 Loans	2,165,966
Discount/Premium	(84,242)
Total loans	2,213,735
Total consumer | Home equity lines
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Non-accrual	13,494		12,114
Total loans	1,587,854		1,515,796
Total consumer | Home equity lines | FCB Financial Holdings, Inc.
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Non-accrual	55
ASC 310-30 Loans	5,088
Discount/Premium	(7,519)
Total loans	62,891
Total consumer | Credit cards
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Non-accrual	0		0
Total loans	258,283		258,245
Total consumer | Other consumer loans
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Non-accrual	4,667		3,689
Total loans	2,237,406		1,916,743
Total consumer | Other consumer loans | FCB Financial Holdings, Inc.
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Non-accrual	0
ASC 310-30 Loans	12,902
Discount/Premium	(1,279)
Total loans	11,931
Current
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	27,196,222		25,807,056
Current | FCB Financial Holdings, Inc.
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	2,187,558
Current | Total commercial and industrial
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	13,060,603		12,689,324
Current | Total commercial and industrial | FCB Financial Holdings, Inc.
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	824,241
Current | Total commercial and industrial | Commercial, financial and agricultural
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	7,712,371		7,372,301
Current | Total commercial and industrial | Commercial, financial and agricultural | FCB Financial Holdings, Inc.
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	754,672
Current | Total commercial and industrial | Owner-occupied
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	5,348,232		5,317,023
Current | Total commercial and industrial | Owner-occupied | FCB Financial Holdings, Inc.
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	69,569
Current | Total commercial real estate
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	6,923,956		6,551,850
Current | Total commercial real estate | FCB Financial Holdings, Inc.
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	1,165,886
Current | Total commercial real estate | Investment properties
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	5,924,501		5,557,224
Current | Total commercial real estate | Investment properties | FCB Financial Holdings, Inc.
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	991,090
Current | Total commercial real estate | 1-4 family properties
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	639,534		674,648
Current | Total commercial real estate | 1-4 family properties | FCB Financial Holdings, Inc.
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	49,695
Current | Total commercial real estate | Land and development
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	359,921		319,978
Current | Total commercial real estate | Land and development | FCB Financial Holdings, Inc.
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	125,101
Current | Total consumer
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	7,211,663		6,565,882
Current | Total consumer | FCB Financial Holdings, Inc.
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	197,431
Current | Total consumer | Consumer mortgages
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	3,175,355		2,922,136
Current | Total consumer | Consumer mortgages | FCB Financial Holdings, Inc.
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	132,011
Current | Total consumer | Home equity lines
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	1,569,312		1,496,562
Current | Total consumer | Home equity lines | FCB Financial Holdings, Inc.
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	65,112
Current | Total consumer | Credit cards
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	253,331		252,832
Current | Total consumer | Other consumer loans
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	2,213,665		1,894,352
Current | Total consumer | Other consumer loans | FCB Financial Holdings, Inc.
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	308
Accruing 30-89 Days Past Due
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	61,882		53,129
Accruing 30-89 Days Past Due | FCB Financial Holdings, Inc.
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	472
Accruing 30-89 Days Past Due | Total commercial and industrial
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	26,135		13,421
Accruing 30-89 Days Past Due | Total commercial and industrial | FCB Financial Holdings, Inc.
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	317
Accruing 30-89 Days Past Due | Total commercial and industrial | Commercial, financial and agricultural
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	19,804		7,988
Accruing 30-89 Days Past Due | Total commercial and industrial | Commercial, financial and agricultural | FCB Financial Holdings, Inc.
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	317
Accruing 30-89 Days Past Due | Total commercial and industrial | Owner-occupied
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	6,331		5,433
Accruing 30-89 Days Past Due | Total commercial and industrial | Owner-occupied | FCB Financial Holdings, Inc.
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	0
Accruing 30-89 Days Past Due | Total commercial real estate
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	5,695		4,796
Accruing 30-89 Days Past Due | Total commercial real estate | FCB Financial Holdings, Inc.
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	0
Accruing 30-89 Days Past Due | Total commercial real estate | Investment properties
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	1,525		1,312
Accruing 30-89 Days Past Due | Total commercial real estate | Investment properties | FCB Financial Holdings, Inc.
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	0
Accruing 30-89 Days Past Due | Total commercial real estate | 1-4 family properties
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	2,296		2,745
Accruing 30-89 Days Past Due | Total commercial real estate | 1-4 family properties | FCB Financial Holdings, Inc.
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	0
Accruing 30-89 Days Past Due | Total commercial real estate | Land and development
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	1,874		739
Accruing 30-89 Days Past Due | Total commercial real estate | Land and development | FCB Financial Holdings, Inc.
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	0
Accruing 30-89 Days Past Due | Total consumer
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	30,052		34,912
Accruing 30-89 Days Past Due | Total consumer | FCB Financial Holdings, Inc.
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	155
Accruing 30-89 Days Past Due | Total consumer | Consumer mortgages
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	4,494		7,150
Accruing 30-89 Days Past Due | Total consumer | Consumer mortgages | FCB Financial Holdings, Inc.
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	0
Accruing 30-89 Days Past Due | Total consumer | Home equity lines
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	4,783		7,092
Accruing 30-89 Days Past Due | Total consumer | Home equity lines | FCB Financial Holdings, Inc.
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	155
Accruing 30-89 Days Past Due | Total consumer | Credit cards
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	2,503		3,066
Accruing 30-89 Days Past Due | Total consumer | Other consumer loans
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	18,272		17,604
Accruing 30-89 Days Past Due | Total consumer | Other consumer loans | FCB Financial Holdings, Inc.
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	0
Accruing 90 Days or Greater Past Due
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	5,851		3,798
Accruing 90 Days or Greater Past Due | FCB Financial Holdings, Inc.
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	0
Accruing 90 Days or Greater Past Due | Total commercial and industrial
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	746		195
Accruing 90 Days or Greater Past Due | Total commercial and industrial | FCB Financial Holdings, Inc.
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	0
Accruing 90 Days or Greater Past Due | Total commercial and industrial | Commercial, financial and agricultural
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	462		114
Accruing 90 Days or Greater Past Due | Total commercial and industrial | Commercial, financial and agricultural | FCB Financial Holdings, Inc.
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	0
Accruing 90 Days or Greater Past Due | Total commercial and industrial | Owner-occupied
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	284		81
Accruing 90 Days or Greater Past Due | Total commercial and industrial | Owner-occupied | FCB Financial Holdings, Inc.
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	0
Accruing 90 Days or Greater Past Due | Total commercial real estate
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	1,039		130
Accruing 90 Days or Greater Past Due | Total commercial real estate | FCB Financial Holdings, Inc.
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	0
Accruing 90 Days or Greater Past Due | Total commercial real estate | Investment properties
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	881		34
Accruing 90 Days or Greater Past Due | Total commercial real estate | Investment properties | FCB Financial Holdings, Inc.
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	0
Accruing 90 Days or Greater Past Due | Total commercial real estate | 1-4 family properties
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	0		96
Accruing 90 Days or Greater Past Due | Total commercial real estate | 1-4 family properties | FCB Financial Holdings, Inc.
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	0
Accruing 90 Days or Greater Past Due | Total commercial real estate | Land and development
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	158		0
Accruing 90 Days or Greater Past Due | Total commercial real estate | Land and development | FCB Financial Holdings, Inc.
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	0
Accruing 90 Days or Greater Past Due | Total consumer
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	4,066		3,473
Accruing 90 Days or Greater Past Due | Total consumer | FCB Financial Holdings, Inc.
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	0
Accruing 90 Days or Greater Past Due | Total consumer | Consumer mortgages
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	550		0
Accruing 90 Days or Greater Past Due | Total consumer | Consumer mortgages | FCB Financial Holdings, Inc.
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	0
Accruing 90 Days or Greater Past Due | Total consumer | Home equity lines
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	265		28
Accruing 90 Days or Greater Past Due | Total consumer | Home equity lines | FCB Financial Holdings, Inc.
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	0
Accruing 90 Days or Greater Past Due | Total consumer | Credit cards
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	2,449		2,347
Accruing 90 Days or Greater Past Due | Total consumer | Other consumer loans
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	802		1,098
Accruing 90 Days or Greater Past Due | Total consumer | Other consumer loans | FCB Financial Holdings, Inc.
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	0
Total Accruing Past Due
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	67,733		56,927
Total Accruing Past Due | FCB Financial Holdings, Inc.
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	472
Total Accruing Past Due | Total commercial and industrial
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	26,881		13,616
Total Accruing Past Due | Total commercial and industrial | FCB Financial Holdings, Inc.
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	317
Total Accruing Past Due | Total commercial and industrial | Commercial, financial and agricultural
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	20,266		8,102
Total Accruing Past Due | Total commercial and industrial | Commercial, financial and agricultural | FCB Financial Holdings, Inc.
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	317
Total Accruing Past Due | Total commercial and industrial | Owner-occupied
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	6,615		5,514
Total Accruing Past Due | Total commercial and industrial | Owner-occupied | FCB Financial Holdings, Inc.
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	0
Total Accruing Past Due | Total commercial real estate
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	6,734		4,926
Total Accruing Past Due | Total commercial real estate | FCB Financial Holdings, Inc.
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	0
Total Accruing Past Due | Total commercial real estate | Investment properties
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	2,406		1,346
Total Accruing Past Due | Total commercial real estate | Investment properties | FCB Financial Holdings, Inc.
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	0
Total Accruing Past Due | Total commercial real estate | 1-4 family properties
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	2,296		2,841
Total Accruing Past Due | Total commercial real estate | 1-4 family properties | FCB Financial Holdings, Inc.
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	0
Total Accruing Past Due | Total commercial real estate | Land and development
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	2,032		739
Total Accruing Past Due | Total commercial real estate | Land and development | FCB Financial Holdings, Inc.
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	0
Total Accruing Past Due | Total consumer
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	34,118		38,385
Total Accruing Past Due | Total consumer | FCB Financial Holdings, Inc.
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	155
Total Accruing Past Due | Total consumer | Consumer mortgages
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	5,044		7,150
Total Accruing Past Due | Total consumer | Consumer mortgages | FCB Financial Holdings, Inc.
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	0
Total Accruing Past Due | Total consumer | Home equity lines
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	5,048		7,120
Total Accruing Past Due | Total consumer | Home equity lines | FCB Financial Holdings, Inc.
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	155
Total Accruing Past Due | Total consumer | Credit cards
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	4,952		5,413
Total Accruing Past Due | Total consumer | Other consumer loans
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	19,074		$ 18,702
Total Accruing Past Due | Total consumer | Other consumer loans | FCB Financial Holdings, Inc.
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Loans and leases receivables	$ 0

Loans and Allowance for Loan _4

Loans and Allowance for Loan Losses (Narrative) (Details)	3 Months Ended		6 Months Ended			12 Months Ended
	Jun. 30, 2019USD ($)contract	Jun. 30, 2018USD ($)contract	Jun. 30, 2019USD ($)contract		Jun. 30, 2018USD ($)contract	Dec. 31, 2018USD ($)	Jan. 01, 2019USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	$ 12,160,000,000		$ 12,160,000,000			$ 8,400,000,000
Non-accrual status	69,100,000		69,100,000			51,300,000
Recorded Investment	9,225,000	$ 15,878,000	16,732,000		$ 25,365,000
Provision for loan losses	12,119,000	$ 11,790,000	35,688,000	[1]	$ 24,566,000
Commitments to land additional funds to TDRs	$ 0		$ 0			0
Troubled Debt Restructuring That Subsequently Defaults
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of contracts | contract	1	8	1		8
Recorded Investment	$ 5,000	$ 10,500,000	$ 5,000		$ 10,500,000
FCB Financial Holdings, Inc.
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans acquired at fair value							$ 9,290,000,000
Loans							9,289,208,000
Loans acquired at fair value, discount							168,000,000
Contractual required payments							2,450,000,000
Contractual required payments at fair value							2,150,000,000
Cash flows expected not to be collected							$ 39,500,000
Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Retail loan substandard period (in days)			90 days
Loss And Charged Off
Accounts, Notes, Loans and Financing Receivable [Line Items]
Retail loans downgraded to loss (in days)			120 days
Accruing TDRs With Modifications And Renewals Completed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accruing troubled debt restructuring	$ 126,400,000		$ 126,400,000			115,600,000
Provision for loan losses			5,700,000			$ 6,100,000
Accruing TDRs With Modifications And Renewals Completed | Minimum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial-type impaired loans			$ 1,000,000
[1]	Where applicable, changes for balances as of June 30, 2019, compared to December 31, 2018, exclude amounts acquired on the Acquisition Date. See accompanying notes to unaudited interim consolidated financial statements.

Loans and Allowance for Loan _5

Loans and Allowance for Loan Losses (Loan Portfolio Credit Exposure) (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jan. 01, 2019	Dec. 31, 2018	Jun. 30, 2018
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	$ 27,381,026		$ 25,970,716	$ 25,156,773
Accrual substandard loans	265,000		172,300
Deferred fees and costs, net	(23,600)		(24,100)	$ (22,700)
FCB Financial Holdings, Inc.
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	$ 8,781,091
Loans		$ 9,289,208
Maximum
Financing Receivable, Credit Quality Indicator [Line Items]
Allowance for loan losses, percent of loan amount	50.00%
Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	$ 26,877,457		25,458,715
Pass | FCB Financial Holdings, Inc.
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	8,691,944
Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	171,418		232,952
Special Mention | FCB Financial Holdings, Inc.
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	32,234
Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	323,508		274,918
Substandard | FCB Financial Holdings, Inc.
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	56,913
Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	5,585		1,472
Doubtful | FCB Financial Holdings, Inc.
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	0
Loss
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	3,058		2,659
Loss | FCB Financial Holdings, Inc.
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	0
Total commercial and industrial
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	13,167,614		12,781,206
Total commercial and industrial | FCB Financial Holdings, Inc.
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	3,079,929
Total commercial and industrial | Commercial, financial and agricultural
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	7,801,210		7,449,698
Total commercial and industrial | Commercial, financial and agricultural | FCB Financial Holdings, Inc.
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	1,916,536
Total commercial and industrial | Owner-occupied
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	5,366,404		5,331,508
Total commercial and industrial | Owner-occupied | FCB Financial Holdings, Inc.
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	1,163,393
Total commercial and industrial | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	12,803,050		12,402,990
Total commercial and industrial | Pass | FCB Financial Holdings, Inc.
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	3,035,698
Total commercial and industrial | Pass | Commercial, financial and agricultural
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	7,534,124		7,190,517
Total commercial and industrial | Pass | Commercial, financial and agricultural | FCB Financial Holdings, Inc.
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	1,881,798
Total commercial and industrial | Pass | Owner-occupied
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	5,268,926		5,212,473
Total commercial and industrial | Pass | Owner-occupied | FCB Financial Holdings, Inc.
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	1,153,900
Total commercial and industrial | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	135,722		173,226
Total commercial and industrial | Special Mention | FCB Financial Holdings, Inc.
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	25,667
Total commercial and industrial | Special Mention | Commercial, financial and agricultural
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	117,878		118,188
Total commercial and industrial | Special Mention | Commercial, financial and agricultural | FCB Financial Holdings, Inc.
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	19,981
Total commercial and industrial | Special Mention | Owner-occupied
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	17,844		55,038
Total commercial and industrial | Special Mention | Owner-occupied | FCB Financial Holdings, Inc.
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	5,686
Total commercial and industrial | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	224,221		203,790
Total commercial and industrial | Substandard | FCB Financial Holdings, Inc.
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	18,564
Total commercial and industrial | Substandard | Commercial, financial and agricultural
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	144,660		140,218
Total commercial and industrial | Substandard | Commercial, financial and agricultural | FCB Financial Holdings, Inc.
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	14,757
Total commercial and industrial | Substandard | Owner-occupied
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	79,561		63,572
Total commercial and industrial | Substandard | Owner-occupied | FCB Financial Holdings, Inc.
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	3,807
Total commercial and industrial | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	4,621		1,200
Total commercial and industrial | Doubtful | FCB Financial Holdings, Inc.
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	0
Total commercial and industrial | Doubtful | Commercial, financial and agricultural
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	4,548		775
Total commercial and industrial | Doubtful | Commercial, financial and agricultural | FCB Financial Holdings, Inc.
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	0
Total commercial and industrial | Doubtful | Owner-occupied
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	73		425
Total commercial and industrial | Doubtful | Owner-occupied | FCB Financial Holdings, Inc.
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	0
Total commercial and industrial | Loss
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	0		0
Total commercial and industrial | Loss | FCB Financial Holdings, Inc.
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	0
Total commercial and industrial | Loss | Commercial, financial and agricultural
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	0		0
Total commercial and industrial | Loss | Commercial, financial and agricultural | FCB Financial Holdings, Inc.
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	0
Total commercial and industrial | Loss | Owner-occupied
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	0		0
Total commercial and industrial | Loss | Owner-occupied | FCB Financial Holdings, Inc.
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	0
Total commercial real estate
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	6,935,842		6,564,491
Total commercial real estate | FCB Financial Holdings, Inc.
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	3,412,605
Total commercial real estate | Investment properties
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	5,927,706		5,560,951
Total commercial real estate | Investment properties | FCB Financial Holdings, Inc.
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	3,077,394
Total commercial real estate | 1-4 family properties
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	643,448		679,870
Total commercial real estate | 1-4 family properties | FCB Financial Holdings, Inc.
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	103,942
Total commercial real estate | Land and development
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	364,688		323,670
Total commercial real estate | Land and development | FCB Financial Holdings, Inc.
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	231,269
Total commercial real estate | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	6,834,810		6,458,891
Total commercial real estate | Pass | FCB Financial Holdings, Inc.
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	3,367,834
Total commercial real estate | Pass | Investment properties
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	5,860,735		5,497,344
Total commercial real estate | Pass | Investment properties | FCB Financial Holdings, Inc.
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	3,035,213
Total commercial real estate | Pass | 1-4 family properties
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	631,648		663,692
Total commercial real estate | Pass | 1-4 family properties | FCB Financial Holdings, Inc.
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	101,480
Total commercial real estate | Pass | Land and development
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	342,427		297,855
Total commercial real estate | Pass | Land and development | FCB Financial Holdings, Inc.
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	231,141
Total commercial real estate | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	35,696		59,726
Total commercial real estate | Special Mention | FCB Financial Holdings, Inc.
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	6,567
Total commercial real estate | Special Mention | Investment properties
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	22,206		40,516
Total commercial real estate | Special Mention | Investment properties | FCB Financial Holdings, Inc.
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	6,439
Total commercial real estate | Special Mention | 1-4 family properties
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	3,610		6,424
Total commercial real estate | Special Mention | 1-4 family properties | FCB Financial Holdings, Inc.
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	0
Total commercial real estate | Special Mention | Land and development
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	9,880		12,786
Total commercial real estate | Special Mention | Land and development | FCB Financial Holdings, Inc.
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	128
Total commercial real estate | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	65,336		45,874
Total commercial real estate | Substandard | FCB Financial Holdings, Inc.
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	38,204
Total commercial real estate | Substandard | Investment properties
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	44,765		23,091
Total commercial real estate | Substandard | Investment properties | FCB Financial Holdings, Inc.
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	35,742
Total commercial real estate | Substandard | 1-4 family properties
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	8,190		9,754
Total commercial real estate | Substandard | 1-4 family properties | FCB Financial Holdings, Inc.
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	2,462
Total commercial real estate | Substandard | Land and development
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	12,381		13,029
Total commercial real estate | Substandard | Land and development | FCB Financial Holdings, Inc.
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	0
Total commercial real estate | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	0		0
Total commercial real estate | Doubtful | FCB Financial Holdings, Inc.
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	0
Total commercial real estate | Doubtful | Investment properties
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	0		0
Total commercial real estate | Doubtful | Investment properties | FCB Financial Holdings, Inc.
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	0
Total commercial real estate | Doubtful | 1-4 family properties
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	0		0
Total commercial real estate | Doubtful | 1-4 family properties | FCB Financial Holdings, Inc.
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	0
Total commercial real estate | Doubtful | Land and development
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	0		0
Total commercial real estate | Doubtful | Land and development | FCB Financial Holdings, Inc.
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	0
Total commercial real estate | Loss
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	0		0
Total commercial real estate | Loss | FCB Financial Holdings, Inc.
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	0
Total commercial real estate | Loss | Investment properties
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	0		0
Total commercial real estate | Loss | Investment properties | FCB Financial Holdings, Inc.
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	0
Total commercial real estate | Loss | 1-4 family properties
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	0		0
Total commercial real estate | Loss | 1-4 family properties | FCB Financial Holdings, Inc.
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	0
Total commercial real estate | Loss | Land and development
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	0		0
Total commercial real estate | Loss | Land and development | FCB Financial Holdings, Inc.
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	0
Total consumer
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	7,277,570		6,625,019
Total consumer | FCB Financial Holdings, Inc.
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	2,288,557
Total consumer | Consumer mortgages
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	3,194,027		2,934,235
Total consumer | Consumer mortgages | FCB Financial Holdings, Inc.
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	2,213,735
Total consumer | Home equity lines
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	1,587,854		1,515,796
Total consumer | Home equity lines | FCB Financial Holdings, Inc.
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	62,891
Total consumer | Credit cards
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	258,283		258,245
Total consumer | Other consumer loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	2,237,406		1,916,743
Total consumer | Other consumer loans | FCB Financial Holdings, Inc.
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	11,931
Total consumer | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	7,239,597		6,596,834
Total consumer | Pass | FCB Financial Holdings, Inc.
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	2,288,412
Total consumer | Pass | Consumer mortgages
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	3,179,300		2,926,712
Total consumer | Pass | Consumer mortgages | FCB Financial Holdings, Inc.
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	2,213,735
Total consumer | Pass | Home equity lines
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	1,572,002		1,501,316
Total consumer | Pass | Home equity lines | FCB Financial Holdings, Inc.
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	62,746
Total consumer | Pass | Credit cards
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	255,836		255,904
Total consumer | Pass | Other consumer loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	2,232,459		1,912,902
Total consumer | Pass | Other consumer loans | FCB Financial Holdings, Inc.
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	11,931
Total consumer | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	0		0
Total consumer | Special Mention | FCB Financial Holdings, Inc.
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	0
Total consumer | Special Mention | Consumer mortgages
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	0		0
Total consumer | Special Mention | Consumer mortgages | FCB Financial Holdings, Inc.
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	0
Total consumer | Special Mention | Home equity lines
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	0		0
Total consumer | Special Mention | Home equity lines | FCB Financial Holdings, Inc.
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	0
Total consumer | Special Mention | Credit cards
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	0		0
Total consumer | Special Mention | Other consumer loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	0		0
Total consumer | Special Mention | Other consumer loans | FCB Financial Holdings, Inc.
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	0
Total consumer | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	33,951		25,254
Total consumer | Substandard | FCB Financial Holdings, Inc.
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	145
Total consumer | Substandard | Consumer mortgages
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	13,708		7,425
Total consumer | Substandard | Consumer mortgages | FCB Financial Holdings, Inc.
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	0
Total consumer | Substandard | Home equity lines
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	14,362		13,130
Total consumer | Substandard | Home equity lines | FCB Financial Holdings, Inc.
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	145
Total consumer | Substandard | Credit cards
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	934		858
Total consumer | Substandard | Other consumer loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	4,947		3,841
Total consumer | Substandard | Other consumer loans | FCB Financial Holdings, Inc.
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	0
Total consumer | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	964		272
Total consumer | Doubtful | FCB Financial Holdings, Inc.
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	0
Total consumer | Doubtful | Consumer mortgages
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	943		98
Total consumer | Doubtful | Consumer mortgages | FCB Financial Holdings, Inc.
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	0
Total consumer | Doubtful | Home equity lines
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	21		174
Total consumer | Doubtful | Home equity lines | FCB Financial Holdings, Inc.
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	0
Total consumer | Doubtful | Credit cards
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	0		0
Total consumer | Doubtful | Other consumer loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	0		0
Total consumer | Doubtful | Other consumer loans | FCB Financial Holdings, Inc.
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	0
Total consumer | Loss
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	3,058		2,659
Total consumer | Loss | FCB Financial Holdings, Inc.
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	0
Total consumer | Loss | Consumer mortgages
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	76		0
Total consumer | Loss | Consumer mortgages | FCB Financial Holdings, Inc.
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	0
Total consumer | Loss | Home equity lines
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	1,469		1,176
Total consumer | Loss | Home equity lines | FCB Financial Holdings, Inc.
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	0
Total consumer | Loss | Credit cards
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	1,513		1,483
Total consumer | Loss | Other consumer loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	0		$ 0
Total consumer | Loss | Other consumer loans | FCB Financial Holdings, Inc.
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans	$ 0

Loans and Allowance for Loan _6

Loans and Allowance for Loan Losses (Acuired Loan Portfolio) (Details) - FCB Financial Holdings, Inc. - USD ($) $ in Thousands	Jun. 30, 2019	Jan. 01, 2019
Business Acquisition [Line Items]
Contractually required principal and interest at acquisition		$ 8,377,942
Non-accretable difference (expected losses and foregone interest)		(163,147)
Cash flows expected to be collected at acquisition		8,214,795
Accretable yield	$ (6,730,740)	(1,066,689)
Basis in ASC 310-30 loans at acquisition		$ 7,148,106

Loans and Allowance for Loan _7

Loans and Allowance for Loan Losses (Changes in Accretable Difference) (Details) - FCB Financial Holdings, Inc. $ in Thousands	6 Months Ended
	Jun. 30, 2019USD ($)
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward]
Beginning balance	$ 0
Additions	1,066,689
Transfers from non-accretable difference to accretable yield	13,516
Accretion	(182,944)
Changes in expected cash flows not affecting non-accretable differences	24,929
Ending balance	$ 922,190

Loans and Allowance for Loan _8

Loans and Allowance for Loan Losses (Schedule Of Allowances For Loan Losses And Recorded Investment In Loans) (Details) - USD ($)	3 Months Ended		6 Months Ended			12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019		Jun. 30, 2018	Dec. 31, 2018
Allowance for loan losses:
Beginning balance, allowance	$ 257,036,000	$ 257,764,000	$ 250,555,000		$ 249,268,000	$ 249,268,000
Charge-offs	(16,865,000)	(21,504,000)	(37,563,000)		(36,126,000)
Recoveries	5,086,000	3,675,000	8,696,000		14,017,000
Provision for (reversal of) loan losses	12,119,000	11,790,000	35,688,000	[1]	24,566,000
Ending balance, allowance	257,376,000	251,725,000	257,376,000		251,725,000	250,555,000
Ending balance: individually evaluated for impairment, allowance	18,166,000	14,932,000	18,166,000		14,932,000
Ending balance: collectively evaluated for impairment, allowance	239,210,000	236,793,000	239,210,000		236,793,000
Ending balance: total loans	36,162,117,000		36,162,117,000
Total loans	27,381,026,000	25,156,773,000	27,381,026,000		25,156,773,000	25,970,716,000
Ending balance: individually evaluated for impairment, loans	195,492,000	189,025,000	195,492,000		189,025,000
Ending balance: collectively evaluated for impairment, loans	29,361,579,000	24,967,748,000	29,361,579,000		24,967,748,000
Ending balance: acquired loans accounted for under ASC 310-30	6,605,046,000		6,605,046,000
Allowance for purchased credit-impaired loans	0	0	0		0
Deferred fees and costs, net	(23,600,000)	(22,700,000)	(23,600,000)		(22,700,000)	(24,100,000)
Acquired collectively evaluated for impairment loan discount	12,200,000		12,200,000
Acquired loans under 310-30 loan discount	125,700,000		125,700,000
Purchased credit-impaired loans		0			0
Commercial & Industrial
Allowance for loan losses:
Beginning balance, allowance	135,639,000	134,745,000	133,123,000		126,803,000	126,803,000
Charge-offs	(11,095,000)	(15,770,000)	(24,133,000)		(23,786,000)
Recoveries	1,821,000	1,635,000	3,810,000		3,995,000
Provision for (reversal of) loan losses	11,639,000	9,725,000	25,204,000		23,323,000
Ending balance, allowance	138,004,000	130,335,000	138,004,000		130,335,000	133,123,000
Ending balance: individually evaluated for impairment, allowance	16,126,000	9,474,000	16,126,000		9,474,000
Ending balance: collectively evaluated for impairment, allowance	121,878,000	120,861,000	121,878,000		120,861,000
Ending balance: total loans	16,247,543,000		16,247,543,000
Total loans		12,275,472,000			12,275,472,000
Ending balance: individually evaluated for impairment, loans	135,548,000	107,544,000	135,548,000		107,544,000
Ending balance: collectively evaluated for impairment, loans	13,857,183,000	12,167,928,000	13,857,183,000		12,167,928,000
Ending balance: acquired loans accounted for under ASC 310-30	2,254,812,000		2,254,812,000
Commercial Real Estate
Allowance for loan losses:
Beginning balance, allowance	69,009,000	73,991,000	68,796,000		74,998,000	74,998,000
Charge-offs	(861,000)	(523,000)	(2,093,000)		(2,446,000)
Recoveries	1,954,000	480,000	2,298,000		6,964,000
Provision for (reversal of) loan losses	(6,639,000)	1,257,000	(5,538,000)		(4,311,000)
Ending balance, allowance	63,463,000	75,205,000	63,463,000		75,205,000	68,796,000
Ending balance: individually evaluated for impairment, allowance	1,229,000	4,687,000	1,229,000		4,687,000
Ending balance: collectively evaluated for impairment, allowance	62,234,000	70,518,000	62,234,000		70,518,000
Ending balance: total loans	10,348,447,000		10,348,447,000
Total loans		6,644,171,000			6,644,171,000
Ending balance: individually evaluated for impairment, loans	28,231,000	53,805,000	28,231,000		53,805,000
Ending balance: collectively evaluated for impairment, loans	8,070,437,000	6,590,366,000	8,070,437,000		6,590,366,000
Ending balance: acquired loans accounted for under ASC 310-30	2,249,779,000		2,249,779,000
Consumer
Allowance for loan losses:
Beginning balance, allowance	52,388,000	49,028,000	48,636,000		47,467,000	47,467,000
Charge-offs	(4,909,000)	(5,211,000)	(11,337,000)		(9,894,000)
Recoveries	1,311,000	1,560,000	2,588,000		3,058,000
Provision for (reversal of) loan losses	7,119,000	808,000	16,022,000		5,554,000
Ending balance, allowance	55,909,000	46,185,000	55,909,000		46,185,000	$ 48,636,000
Ending balance: individually evaluated for impairment, allowance	811,000	771,000	811,000		771,000
Ending balance: collectively evaluated for impairment, allowance	55,098,000	45,414,000	55,098,000		45,414,000
Ending balance: total loans	9,566,127,000		9,566,127,000
Total loans		6,237,130,000			6,237,130,000
Ending balance: individually evaluated for impairment, loans	31,713,000	27,676,000	31,713,000		27,676,000
Ending balance: collectively evaluated for impairment, loans	7,433,959,000	$ 6,209,454,000	7,433,959,000		$ 6,209,454,000
Ending balance: acquired loans accounted for under ASC 310-30	$ 2,100,455,000		$ 2,100,455,000
[1]	Where applicable, changes for balances as of June 30, 2019, compared to December 31, 2018, exclude amounts acquired on the Acquisition Date. See accompanying notes to unaudited interim consolidated financial statements.

Loans and Allowance for Loan _9

Loans and Allowance for Loan Losses (Schedule Of Impaired Loans) (Details) - USD ($)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	$ 209,721,000		$ 209,721,000		$ 178,858,000
Recorded Investment, Without an ALL	26,474,000		26,474,000		22,563,000
Recorded Investment, With an ALL	169,018,000		169,018,000		144,363,000
Related Allowance	18,166,000		18,166,000		13,549,000
Average Recorded Investment	197,382,000	$ 194,231,000	191,093,000	$ 196,181,000
Interest Income Recognized	1,658,000	1,743,000	3,371,000	3,315,000	0
Interest income, cash basis method	290,000	394,000	690,000	535,000
Total commercial and industrial
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	148,157,000		148,157,000		114,738,000
Recorded Investment, Without an ALL	24,536,000		24,536,000		22,298,000
Recorded Investment, With an ALL	111,012,000		111,012,000		83,124,000
Related Allowance	16,126,000		16,126,000		10,207,000
Average Recorded Investment	137,942,000	109,937,000	132,167,000	111,766,000
Interest Income Recognized	998,000	896,000	2,078,000	1,665,000
Total commercial and industrial | Commercial, financial and agricultural
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	94,581,000		94,581,000		65,150,000
Recorded Investment, Without an ALL	24,420,000		24,420,000		22,298,000
Recorded Investment, With an ALL	59,760,000		59,760,000		34,222,000
Related Allowance	13,248,000		13,248,000		7,133,000
Average Recorded Investment	86,393,000	71,505,000	81,373,000	73,693,000
Interest Income Recognized	384,000	452,000	938,000	851,000
Total commercial and industrial | Owner-occupied
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	53,576,000		53,576,000		49,588,000
Recorded Investment, Without an ALL	116,000		116,000		0
Recorded Investment, With an ALL	51,252,000		51,252,000		48,902,000
Related Allowance	2,878,000		2,878,000		3,074,000
Average Recorded Investment	51,549,000	38,432,000	50,794,000	38,073,000
Interest Income Recognized	614,000	444,000	1,140,000	814,000
Total commercial real estate
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	29,498,000		29,498,000		35,785,000
Recorded Investment, Without an ALL	1,055,000		1,055,000		265,000
Recorded Investment, With an ALL	27,176,000		27,176,000		32,933,000
Related Allowance	1,229,000		1,229,000		2,598,000
Average Recorded Investment	29,086,000	54,084,000	29,348,000	53,369,000
Interest Income Recognized	325,000	520,000	632,000	1,010,000
Total commercial real estate | Investment properties
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	12,493,000		12,493,000		13,916,000
Recorded Investment, Without an ALL	0		0		0
Recorded Investment, With an ALL	12,494,000		12,494,000		13,916,000
Related Allowance	585,000		585,000		1,523,000
Average Recorded Investment	12,929,000	24,439,000	12,984,000	23,604,000
Interest Income Recognized	157,000	220,000	298,000	418,000
Total commercial real estate | 1-4 family properties
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	5,369,000		5,369,000		5,586,000
Recorded Investment, Without an ALL	0		0		0
Recorded Investment, With an ALL	5,369,000		5,369,000		5,586,000
Related Allowance	181,000		181,000		131,000
Average Recorded Investment	5,096,000	11,217,000	5,302,000	11,466,000
Interest Income Recognized	134,000	226,000	265,000	442,000
Total commercial real estate | Land and development
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	11,636,000		11,636,000		16,283,000
Recorded Investment, Without an ALL	1,055,000		1,055,000		265,000
Recorded Investment, With an ALL	9,313,000		9,313,000		13,431,000
Related Allowance	463,000		463,000		944,000
Average Recorded Investment	11,061,000	18,428,000	11,062,000	18,299,000
Interest Income Recognized	34,000	74,000	69,000	150,000
Total consumer
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	32,066,000		32,066,000		28,335,000
Recorded Investment, Without an ALL	883,000		883,000		0
Recorded Investment, With an ALL	30,830,000		30,830,000		28,306,000
Related Allowance	811,000		811,000		744,000
Average Recorded Investment	30,354,000	30,210,000	29,578,000	31,046,000
Interest Income Recognized	335,000	327,000	661,000	640,000
Total consumer | Consumer mortgages
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	19,988,000		19,988,000		19,506,000
Recorded Investment, Without an ALL	883,000		883,000		0
Recorded Investment, With an ALL	18,814,000		18,814,000		19,506,000
Related Allowance	268,000		268,000		343,000
Average Recorded Investment	19,565,000	3,986,000	19,801,000	5,245,000
Interest Income Recognized	217,000	200,000	429,000	395,000
Total consumer | Home equity lines
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	5,666,000		5,666,000		3,264,000
Recorded Investment, Without an ALL	0		0		0
Recorded Investment, With an ALL	5,604,000		5,604,000		3,235,000
Related Allowance	335,000		335,000		224,000
Average Recorded Investment	4,849,000	21,239,000	4,076,000	20,613,000
Interest Income Recognized	37,000	56,000	73,000	102,000
Total consumer | Other consumer loans
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance	6,412,000		6,412,000		5,565,000
Recorded Investment, Without an ALL	0		0		0
Recorded Investment, With an ALL	6,412,000		6,412,000		5,565,000
Related Allowance	208,000		208,000		$ 177,000
Average Recorded Investment	5,940,000	4,985,000	5,701,000	5,188,000
Interest Income Recognized	$ 81,000	$ 71,000	$ 159,000	$ 143,000

Loans and Allowance for Loan_10

Loans and Allowance for Loan Losses (Troubled Debt Restructurings) (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2019USD ($)Contract	Jun. 30, 2018USD ($)Contract	Jun. 30, 2019USD ($)Contract	Jun. 30, 2018USD ($)Contract
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | Contract	91	42	136	81
Recorded Investment	$ 9,225,000	$ 15,878,000	$ 16,732,000	$ 25,365,000
Net charge-offs			$ 0	$ 0
Total commercial and industrial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | Contract	25	9	40	20
Recorded Investment	$ 4,014,000	$ 3,262,000	$ 7,645,000	$ 7,048,000
Total commercial and industrial | Commercial, financial and agricultural
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | Contract	21	5	34	14
Recorded Investment	$ 2,932,000	$ 576,000	$ 5,614,000	$ 1,565,000
Total commercial and industrial | Owner-occupied
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | Contract	4	4	6	6
Recorded Investment	$ 1,082,000	$ 2,686,000	$ 2,031,000	$ 5,483,000
Total commercial real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | Contract	7	6	14	13
Recorded Investment	$ 863,000	$ 8,545,000	$ 2,139,000	$ 11,469,000
Total commercial real estate | Investment properties
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | Contract	1	2	2	3
Recorded Investment	$ 180,000	$ 6,267,000	$ 663,000	$ 8,226,000
Total commercial real estate | 1-4 family properties
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | Contract	4	1	10	7
Recorded Investment	$ 514,000	$ 492,000	$ 1,307,000	$ 1,457,000
Total commercial real estate | Land and development
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | Contract	2	3	2	3
Recorded Investment	$ 169,000	$ 1,786,000	$ 169,000	$ 1,786,000
Total consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | Contract	59	27	82	48
Recorded Investment	$ 4,348,000	$ 4,071,000	$ 6,948,000	$ 6,848,000
Total consumer | Consumer mortgages
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | Contract	1	7	5	14
Recorded Investment	$ 109,000	$ 3,050,000	$ 1,451,000	$ 4,782,000
Total consumer | Home equity lines
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | Contract	24	3	25	3
Recorded Investment	$ 2,321,000	$ 320,000	$ 2,426,000	$ 320,000
Total consumer | Other consumer loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | Contract	34	17	52	31
Recorded Investment	$ 1,918,000	$ 701,000	$ 3,071,000	$ 1,746,000
Below Market Interest Rate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded Investment	6,304,000	11,628,000	10,548,000	17,567,000
Below Market Interest Rate | Total commercial and industrial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded Investment	2,425,000	2,094,000	5,157,000	4,799,000
Below Market Interest Rate | Total commercial and industrial | Commercial, financial and agricultural
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded Investment	1,343,000	0	3,126,000	0
Below Market Interest Rate | Total commercial and industrial | Owner-occupied
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded Investment	1,082,000	2,094,000	2,031,000	4,799,000
Below Market Interest Rate | Total commercial real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded Investment	863,000	6,011,000	2,139,000	6,976,000
Below Market Interest Rate | Total commercial real estate | Investment properties
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded Investment	180,000	6,011,000	663,000	6,011,000
Below Market Interest Rate | Total commercial real estate | 1-4 family properties
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded Investment	514,000	0	1,307,000	965,000
Below Market Interest Rate | Total commercial real estate | Land and development
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded Investment	169,000	0	169,000	0
Below Market Interest Rate | Total consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded Investment	3,016,000	3,523,000	3,252,000	5,792,000
Below Market Interest Rate | Total consumer | Consumer mortgages
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded Investment	109,000	2,963,000	237,000	4,695,000
Below Market Interest Rate | Total consumer | Home equity lines
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded Investment	2,321,000	172,000	2,321,000	172,000
Below Market Interest Rate | Total consumer | Other consumer loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded Investment	586,000	388,000	694,000	925,000
Other Concessions
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded Investment	2,921,000	4,250,000	6,184,000	7,798,000
Other Concessions | Total commercial and industrial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded Investment	1,589,000	1,168,000	2,488,000	2,249,000
Other Concessions | Total commercial and industrial | Commercial, financial and agricultural
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded Investment	1,589,000	576,000	2,488,000	1,565,000
Other Concessions | Total commercial and industrial | Owner-occupied
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded Investment	0	592,000	0	684,000
Other Concessions | Total commercial real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded Investment	0	2,534,000	0	4,493,000
Other Concessions | Total commercial real estate | Investment properties
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded Investment	0	256,000	0	2,215,000
Other Concessions | Total commercial real estate | 1-4 family properties
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded Investment	0	492,000	0	492,000
Other Concessions | Total commercial real estate | Land and development
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded Investment	0	1,786,000	0	1,786,000
Other Concessions | Total consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded Investment	1,332,000	548,000	3,696,000	1,056,000
Other Concessions | Total consumer | Consumer mortgages
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded Investment	0	87,000	1,214,000	87,000
Other Concessions | Total consumer | Home equity lines
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded Investment	0	148,000	105,000	148,000
Other Concessions | Total consumer | Other consumer loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded Investment	$ 1,332,000	$ 313,000	$ 2,377,000	$ 821,000

Goodwill and Other Intangible_3

Goodwill and Other Intangible Assets (Goodwill) (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2019USD ($)
Goodwill [Roll Forward]
Balance as of December 31, 2018	$ 57,315
Goodwill acquired during the year (preliminary allocation) and adjustments	435,075
Balance as of June 30, 2019	492,390
Synovus Bank Reporting Unit
Goodwill [Roll Forward]
Balance as of December 31, 2018	32,884
Goodwill acquired during the year (preliminary allocation) and adjustments	435,075
Balance as of June 30, 2019	467,959
Trust Services Reporting Unit
Goodwill [Roll Forward]
Balance as of December 31, 2018	24,431
Goodwill acquired during the year (preliminary allocation) and adjustments	0
Balance as of June 30, 2019	$ 24,431

Goodwill and Other Intangible_4

Goodwill and Other Intangible Assets (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Jan. 01, 2019	Dec. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization of intangibles	$ 2,410		$ 292	$ 5,802	$ 583
Business Acquisition [Line Items]
Goodwill	492,390			492,390			$ 57,315
FCB Financial Holdings, Inc.
Business Acquisition [Line Items]
Goodwill						$ 435,075
Core deposits decrease	10,800	$ 10,800
Core deposits	$ 52,200			$ 52,200		$ 57,400
FCB Financial Holdings, Inc. | Core Deposits
Business Acquisition [Line Items]
Useful life				10 years

Goodwill and Other Intangible_5

Goodwill and Other Intangible Assets (Intangible Assets) (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Other intangible assets, gross carrying amount	$ 70,328	$ 12,928
Other intangible assets, accumulated amortization	(8,855)	(3,053)
Other intangible assets, net carrying amount	$ 61,473	$ 9,875

Shareholders' Equity and Othe_3

Shareholders' Equity and Other Comprehensive Income (Loss) (Narrative) (Details) $ / shares in Units, shares in Millions	Jan. 01, 2019USD ($)shares	Jun. 30, 2019USD ($)	Jun. 30, 2018USD ($)	Jun. 30, 2019USD ($)$ / sharesshares	Jun. 30, 2019USD ($)	Jun. 30, 2018USD ($)	Jun. 17, 2019USD ($)	Jan. 15, 2019USD ($)
Class of Stock [Line Items]
Authorized amount							$ 725,000,000	$ 400,000,000
Value repurchased		$ 25,003,000	$ 50,077,000		$ 345,170,000	$ 76,810,000
Common Stock
Class of Stock [Line Items]
Value repurchased				$ 345,000,000
Treasury Stock
Class of Stock [Line Items]
Value repurchased		$ 25,003,000	$ 50,077,000		$ 345,170,000	$ 76,810,000
Shares repurchased (in shares) | shares				9.2
Shares repurchased, average cost per share (in dollars per share) | $ / shares				$ 37.43
FCB Financial Holdings, Inc.
Class of Stock [Line Items]
Stock issued in acquisitions (in shares) | shares	49.5
Treasury stock reissued (in shares) | shares	27.4
Payments of stock issuance costs	$ 417,000
Consideration transferred	$ 1,626,278,000
FCB Financial Holdings, Inc. | FCB Financial Holdings, Inc.
Class of Stock [Line Items]
Merger exchange ratio	1.055
FCB Financial Holdings, Inc. | Common Stock
Class of Stock [Line Items]
Stock issued in acquisitions (in shares) | shares	22

Shareholders' Equity and Othe_4

Shareholders' Equity and Other Comprehensive Income (Loss) (Changes in Accumulated Other Comprehensive Income (Loss) by Component (Net of Income Taxes)) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Changes in Accumulated Other Comprehensive Income (Loss) by Component [Roll Forward]
Balance	$ 4,597,753	$ 2,956,495	$ 3,133,602	$ 2,961,566
Other comprehensive income (loss), Net of Tax Amount	67,631	(17,943)	143,709	(63,495)
Balance	4,753,816	3,167,694	4,753,816	3,167,694
Accumulated other comprehensive income (loss)	(49,289)		(49,289)		$ 94,420
Total
Changes in Accumulated Other Comprehensive Income (Loss) by Component [Roll Forward]
Balance	(18,342)	(107,777)	(94,420)	(54,754)
Other comprehensive income (loss) before reclassifications	66,290	(18,878)	142,453	(64,409)
Amounts reclassified from AOCI	1,341	935	1,256	914
Other comprehensive income (loss), Net of Tax Amount	67,631	(17,943)	143,709	(63,495)
Reclassification from adoption of ASU 2018-02				(7,588)
Cumulative-effect adjustment from adoption of ASU 2016-01				117
Balance	49,289	(125,720)	49,289	(125,720)
Net unrealized losses on cash flow hedges
Changes in Accumulated Other Comprehensive Income (Loss) by Component [Roll Forward]
Balance	(12,137)	(12,137)	(12,137)	(12,137)
Other comprehensive income (loss) before reclassifications	0	0	0	0
Amounts reclassified from AOCI	0	0	0	0
Other comprehensive income (loss), Net of Tax Amount	0	0	0	0
Reclassification from adoption of ASU 2018-02				0
Cumulative-effect adjustment from adoption of ASU 2016-01				0
Balance	(12,137)	(12,137)	(12,137)	(12,137)
Net unrealized losses on cash flow hedges | Valuation Allowance of Deferred Tax Assets
Changes in Accumulated Other Comprehensive Income (Loss) by Component [Roll Forward]
Accumulated other comprehensive income (loss)	12,100		12,100
Net unrealized gains (losses) on investment securities available for sale
Changes in Accumulated Other Comprehensive Income (Loss) by Component [Roll Forward]
Balance	(7,071)	(96,647)	(83,179)	(43,470)
Other comprehensive income (loss) before reclassifications	66,290	(18,878)	142,453	(64,409)
Amounts reclassified from AOCI	1,367	960	1,312	960
Other comprehensive income (loss), Net of Tax Amount	67,657	(17,918)	143,765	(63,449)
Reclassification from adoption of ASU 2018-02				(7,763)
Cumulative-effect adjustment from adoption of ASU 2016-01				117
Balance	60,586	(114,565)	60,586	(114,565)
Net unrealized gains (losses) on investment securities available for sale | Valuation Allowance of Deferred Tax Assets
Changes in Accumulated Other Comprehensive Income (Loss) by Component [Roll Forward]
Accumulated other comprehensive income (loss)	13,300		13,300
Post-retirement unfunded health benefit
Changes in Accumulated Other Comprehensive Income (Loss) by Component [Roll Forward]
Balance	866	1,007	896	853
Other comprehensive income (loss) before reclassifications	0	0	0	0
Amounts reclassified from AOCI	(26)	(25)	(56)	(46)
Other comprehensive income (loss), Net of Tax Amount	(26)	(25)	(56)	(46)
Reclassification from adoption of ASU 2018-02				175
Cumulative-effect adjustment from adoption of ASU 2016-01				0
Balance	$ 840	$ 982	$ 840	$ 982

Fair Value Accounting (Financia

Fair Value Accounting (Financial Instruments Measured At Fair Value On A Recurring Basis) (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	$ 7,007,012	$ 3,991,632
Mortgage loans held for sale, at fair value	81,855	37,129
Mortgage-backed securities issued by U.S. Government agencies
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	88,277	97,205
Collateralized mortgage obligations issued by U.S. Government agencies or sponsored enterprises
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	862,533	1,188,518
U.S. Treasury securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	19,689	122,077
Mortgage-backed securities issued by U.S. Government sponsored enterprises
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	4,948,671	2,398,650
Commercial mortgage-backed securities issued by U.S. Government sponsored enterprises
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	368,443	129,865
State and municipal securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	2,100
Asset-backed securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	505,117
Corporate debt securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	146,495	16,935
Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	0	1,128
Investment securities available for sale	19,689	122,077
Private equity investments	0	0
Mutual funds held in rabbi trusts	14,816	12,844
GGL/SBA loans servicing asset	0	0
Derivative assets	0	0
Earnout liability	0	0
Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	6,457	2,002
Investment securities available for sale	6,985,306	3,867,770
Private equity investments	0	0
Mutual funds held in rabbi trusts	0	0
GGL/SBA loans servicing asset	0	0
Derivative assets	136,396	19,332
Earnout liability	0	0
Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	0	0
Investment securities available for sale	2,017	1,785
Private equity investments	13,341	11,028
Mutual funds held in rabbi trusts	0	0
GGL/SBA loans servicing asset	3,326	3,729
Derivative assets	0	0
Earnout liability	14,353	14,353
Fair Value, Measurements, Recurring Basis
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	6,457	3,130
Investment securities available for sale	7,007,012	3,991,632
Mortgage loans held for sale, at fair value	81,855	37,129
Private equity investments	13,341	11,028
Mutual funds held in rabbi trusts	14,816	12,844
GGL/SBA loans servicing asset	3,326	3,729
Derivative assets	136,396	19,332
Earnout liability	14,353	14,353
Derivative liabilities	34,291	18,208
Fair Value, Measurements, Recurring Basis | Mortgage-backed securities issued by U.S. Government agencies
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	3,504
Investment securities available for sale	88,277	97,205
Fair Value, Measurements, Recurring Basis | Collateralized mortgage obligations issued by U.S. Government agencies or sponsored enterprises
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	999
Investment securities available for sale	862,533	1,188,518
Fair Value, Measurements, Recurring Basis | Other mortgage-backed securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	1,464
Fair Value, Measurements, Recurring Basis | Corporate debt securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities		2,022
Fair Value, Measurements, Recurring Basis | U.S. Treasury securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	19,689	122,077
Fair Value, Measurements, Recurring Basis | U.S. Government agency securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	31	44
Investment securities available for sale	65,687	38,382
Fair Value, Measurements, Recurring Basis | Mortgage-backed securities issued by U.S. Government sponsored enterprises
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	4,948,671	2,398,650
Fair Value, Measurements, Recurring Basis | Commercial mortgage-backed securities issued by U.S. Government sponsored enterprises
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	368,443	129,865
Fair Value, Measurements, Recurring Basis | State and municipal securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	382	1,064
Investment securities available for sale	2,100
Fair Value, Measurements, Recurring Basis | Asset-backed securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	505,117
Fair Value, Measurements, Recurring Basis | Corporate debt securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	77
Investment securities available for sale	146,495	16,935
Fair Value, Measurements, Recurring Basis | Mutual funds
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Mutual funds	16,390	3,168
Fair Value, Measurements, Recurring Basis | Interest rate contracts
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets	134,504	18,388
Derivative liabilities	32,193	15,716
Fair Value, Measurements, Recurring Basis | Mortgage derivatives
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets	1,892	944
Derivative liabilities	1,049	819
Fair Value, Measurements, Recurring Basis | Visa derivative
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative liabilities	1,049	1,673
Fair Value, Measurements, Recurring Basis | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	0	1,128
Investment securities available for sale	19,689	122,077
Mortgage loans held for sale, at fair value	0	0
Private equity investments	0	0
Mutual funds held in rabbi trusts	14,816	12,844
GGL/SBA loans servicing asset	0	0
Derivative assets	0	0
Earnout liability	0	0
Derivative liabilities	0	0
Fair Value, Measurements, Recurring Basis | Level 1 | Mortgage-backed securities issued by U.S. Government agencies
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	0
Investment securities available for sale	0	0
Fair Value, Measurements, Recurring Basis | Level 1 | Collateralized mortgage obligations issued by U.S. Government agencies or sponsored enterprises
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	0
Investment securities available for sale	0	0
Fair Value, Measurements, Recurring Basis | Level 1 | Other mortgage-backed securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	0
Fair Value, Measurements, Recurring Basis | Level 1 | Corporate debt securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities		1,128
Fair Value, Measurements, Recurring Basis | Level 1 | U.S. Treasury securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	19,689	122,077
Fair Value, Measurements, Recurring Basis | Level 1 | U.S. Government agency securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	0	0
Investment securities available for sale	0	0
Fair Value, Measurements, Recurring Basis | Level 1 | Mortgage-backed securities issued by U.S. Government sponsored enterprises
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	0	0
Fair Value, Measurements, Recurring Basis | Level 1 | Commercial mortgage-backed securities issued by U.S. Government sponsored enterprises
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	0	0
Fair Value, Measurements, Recurring Basis | Level 1 | State and municipal securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	0	0
Investment securities available for sale	0
Fair Value, Measurements, Recurring Basis | Level 1 | Asset-backed securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	0
Fair Value, Measurements, Recurring Basis | Level 1 | Corporate debt securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	0
Investment securities available for sale	0	0
Fair Value, Measurements, Recurring Basis | Level 1 | Mutual funds
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Mutual funds	16,390	3,168
Fair Value, Measurements, Recurring Basis | Level 1 | Interest rate contracts
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets	0	0
Derivative liabilities	0	0
Fair Value, Measurements, Recurring Basis | Level 1 | Mortgage derivatives
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets	0	0
Derivative liabilities	0	0
Fair Value, Measurements, Recurring Basis | Level 1 | Visa derivative
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative liabilities	0	0
Fair Value, Measurements, Recurring Basis | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	6,457	2,002
Investment securities available for sale	6,985,306	3,867,770
Mortgage loans held for sale, at fair value	81,855	37,129
Private equity investments	0	0
Mutual funds held in rabbi trusts	0	0
GGL/SBA loans servicing asset	0	0
Derivative assets	136,396	19,332
Earnout liability	0	0
Derivative liabilities	33,242	16,535
Fair Value, Measurements, Recurring Basis | Level 2 | Mortgage-backed securities issued by U.S. Government agencies
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	3,504
Investment securities available for sale	88,277	97,205
Fair Value, Measurements, Recurring Basis | Level 2 | Collateralized mortgage obligations issued by U.S. Government agencies or sponsored enterprises
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	999
Investment securities available for sale	862,533	1,188,518
Fair Value, Measurements, Recurring Basis | Level 2 | Other mortgage-backed securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	1,464
Fair Value, Measurements, Recurring Basis | Level 2 | Corporate debt securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities		894
Fair Value, Measurements, Recurring Basis | Level 2 | U.S. Treasury securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	0	0
Fair Value, Measurements, Recurring Basis | Level 2 | U.S. Government agency securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	31	44
Investment securities available for sale	65,687	38,382
Fair Value, Measurements, Recurring Basis | Level 2 | Mortgage-backed securities issued by U.S. Government sponsored enterprises
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	4,948,671	2,398,650
Fair Value, Measurements, Recurring Basis | Level 2 | Commercial mortgage-backed securities issued by U.S. Government sponsored enterprises
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	368,443	129,865
Fair Value, Measurements, Recurring Basis | Level 2 | State and municipal securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	382	1,064
Investment securities available for sale	2,100
Fair Value, Measurements, Recurring Basis | Level 2 | Asset-backed securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	505,117
Fair Value, Measurements, Recurring Basis | Level 2 | Corporate debt securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	77
Investment securities available for sale	144,478	15,150
Fair Value, Measurements, Recurring Basis | Level 2 | Mutual funds
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Mutual funds	0	0
Fair Value, Measurements, Recurring Basis | Level 2 | Interest rate contracts
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets	134,504	18,388
Derivative liabilities	32,193	15,716
Fair Value, Measurements, Recurring Basis | Level 2 | Mortgage derivatives
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets	1,892	944
Derivative liabilities	1,049	819
Fair Value, Measurements, Recurring Basis | Level 2 | Visa derivative
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative liabilities	0	0
Fair Value, Measurements, Recurring Basis | Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	0	0
Investment securities available for sale	2,017	1,785
Mortgage loans held for sale, at fair value	0	0
Private equity investments	13,341	11,028
Mutual funds held in rabbi trusts	0	0
GGL/SBA loans servicing asset	3,326	3,729
Derivative assets	0	0
Earnout liability	14,353	14,353
Derivative liabilities	1,049	1,673
Fair Value, Measurements, Recurring Basis | Level 3 | Mortgage-backed securities issued by U.S. Government agencies
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	0
Investment securities available for sale	0	0
Fair Value, Measurements, Recurring Basis | Level 3 | Collateralized mortgage obligations issued by U.S. Government agencies or sponsored enterprises
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	0
Investment securities available for sale	0	0
Fair Value, Measurements, Recurring Basis | Level 3 | Other mortgage-backed securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	0
Fair Value, Measurements, Recurring Basis | Level 3 | Corporate debt securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities		0
Fair Value, Measurements, Recurring Basis | Level 3 | U.S. Treasury securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	0	0
Fair Value, Measurements, Recurring Basis | Level 3 | U.S. Government agency securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	0	0
Investment securities available for sale	0	0
Fair Value, Measurements, Recurring Basis | Level 3 | Mortgage-backed securities issued by U.S. Government sponsored enterprises
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	0	0
Fair Value, Measurements, Recurring Basis | Level 3 | Commercial mortgage-backed securities issued by U.S. Government sponsored enterprises
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	0	0
Fair Value, Measurements, Recurring Basis | Level 3 | State and municipal securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	0	0
Investment securities available for sale	0
Fair Value, Measurements, Recurring Basis | Level 3 | Asset-backed securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	0
Fair Value, Measurements, Recurring Basis | Level 3 | Corporate debt securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	0
Investment securities available for sale	2,017	1,785
Fair Value, Measurements, Recurring Basis | Level 3 | Mutual funds
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Mutual funds	0	0
Fair Value, Measurements, Recurring Basis | Level 3 | Interest rate contracts
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets	0	0
Derivative liabilities	0	0
Fair Value, Measurements, Recurring Basis | Level 3 | Mortgage derivatives
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets	0	0
Derivative liabilities	0	0
Fair Value, Measurements, Recurring Basis | Level 3 | Visa derivative
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative liabilities	$ 1,049	$ 1,673

Fair Value Accounting (Changes

Fair Value Accounting (Changes In Fair Value Included In Consolidated Statements Of Income) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Financing Receivable, Impaired [Line Items]
Unpaid principal balance	$ 79,873		$ 79,873		$ 35,848
Fair value less aggregate unpaid principal balance	1,982		1,982		1,281
Mortgage loans held for sale	345	$ 40	701	$ 155
Fair value
Financing Receivable, Impaired [Line Items]
Loans receivable held-for-sale	$ 81,855		$ 81,855		$ 37,129

Fair Value Accounting (Change_2

Fair Value Accounting (Changes In Level 3 Fair Value Measurements) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Losses included in earnings attributable to the change in unrealized losses relating to assets/liabilities	$ 1,500	$ (2,400)	$ 2,300	$ (5,400)
GGL / SBA Loans Servicing Asset
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	3,447	3,971	3,729	4,101
Included in earnings	(305)	(312)	(793)	(734)
Unrealized gains (losses) included in OCI	0	0	0	0
Additions	184	527	390	819
Settlements	0	0	0	0
Ending balance	3,326	4,186	3,326	4,186
Total net losses for the period included in earnings attributable to the change in unrealized losses relating to assets/liabilities still held	0	0	0	0
Earnout Liability
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	(14,353)	(11,348)	(14,353)	(11,348)
Included in earnings	0	0	0	0
Unrealized gains (losses) included in OCI	0	0	0	0
Additions	0	0	0	0
Settlements	0	0	0	0
Ending balance	(14,353)	(11,348)	(14,353)	(11,348)
Total net losses for the period included in earnings attributable to the change in unrealized losses relating to assets/liabilities still held	0	0	0	0
Visa Derivative
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	(1,366)	(3,974)	(1,673)	(4,330)
Included in earnings	0	(2,328)	0	(2,328)
Unrealized gains (losses) included in OCI	0	0	0	0
Additions	0	0	0	0
Settlements	317	359	624	715
Ending balance	(1,049)	(5,943)	(1,049)	(5,943)
Total net losses for the period included in earnings attributable to the change in unrealized losses relating to assets/liabilities still held	0	(2,328)	0	(2,328)
Investment Securities Available for Sale
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	1,981	1,852	1,785	1,935
Included in earnings	0	0	0	0
Unrealized gains (losses) included in OCI	36	5	232	(78)
Additions	0	0	0	0
Settlements	0	0	0	0
Ending balance	2,017	1,857	2,017	1,857
Total net losses for the period included in earnings attributable to the change in unrealized losses relating to assets/liabilities still held	0	0	0	0
Private Equity Investments
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	11,886	12,715	11,028	15,771
Included in earnings	1,455	(37)	2,313	(3,093)
Unrealized gains (losses) included in OCI	0	0	0	0
Additions	0	0	0	0
Settlements	0	0	0	0
Ending balance	13,341	12,678	13,341	12,678
Total net losses for the period included in earnings attributable to the change in unrealized losses relating to assets/liabilities still held	$ 1,455	$ (37)	$ 2,313	$ (3,093)

Fair Value Accounting (Assets A

Fair Value Accounting (Assets And Liabilities Measured At Fair Value On A Non-Recurring Basis) (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Other assets held for sale
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other real estate	$ 14,800	$ 6,200
Fair Value, Measurements, Nonrecurring Basis
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	1,540	21,742
Other loans held for sale	0	1,494
Other real estate	2,332	3,827
Other assets held for sale	350	1,104
Fair Value, Measurements, Nonrecurring Basis | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	0	0
Other loans held for sale	0	0
Other real estate	0	0
Other assets held for sale	0	0
Fair Value, Measurements, Nonrecurring Basis | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	0	0
Other loans held for sale	0	0
Other real estate	0	0
Other assets held for sale	0	0
Fair Value, Measurements, Nonrecurring Basis | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	1,540	21,742
Other loans held for sale	0	1,494
Other real estate	2,332	3,827
Other assets held for sale	$ 350	$ 1,104

Fair Value Accounting (Assets M

Fair Value Accounting (Assets Measured at Fair Value on Nonrecurring Basis) (Details) - Fair Value, Measurements, Nonrecurring Basis - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Impaired loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value adjustment	$ 0	$ 6,828	$ 2,625	$ 7,548
Other real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value adjustment	612	0	624	0
Other assets held for sale
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value adjustment	$ 0	$ 499	$ 91	$ 499

Fair Value Accounting (Carrying

Fair Value Accounting (Carrying And Estimated Fair Values Of Financial Instruments Carried On Balance Sheet) (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Financial assets
Investment securities available for sale	$ 7,007,012	$ 3,991,632
Loans, net	35,881,185	25,696,018
Financial liabilities
Non-interest-bearing deposits	9,205,066	7,650,967
Total deposits	37,966,722	26,720,322
Federal funds purchased and securities sold under repurchase agreements	273,481	237,692
Other short-term borrowings	1,330,000	650,000
Long-term debt	2,306,072	1,657,157
Mortgage loans held for sale
Financial assets
Loans receivable held-for-sale	81,855	37,129
Level 1
Financial assets
Total cash, cash equivalents, restricted cash, and restricted cash equivalents	1,151,321	1,143,564
Trading account assets	0	1,128
Investment securities available for sale	19,689	122,077
Private equity investments	0	0
Mutual funds	16,390	3,168
Mutual funds held in rabbi trusts	14,816	12,844
Loans, net	0	0
GGL/SBA loans servicing asset	0	0
Derivative assets	0	0
Financial liabilities
Non-interest-bearing deposits	0	0
Non-time interest-bearing deposits	0	0
Time deposits	0	0
Total deposits	0	0
Federal funds purchased and securities sold under repurchase agreements	273,481	237,692
Other short-term borrowings	0	0
Long-term debt	0	0
Earnout liability	0	0
Derivative liabilities	0	0
Level 1 | Mortgage loans held for sale
Financial assets
Loans receivable held-for-sale	0	0
Level 1 | Other loans held for sale
Financial assets
Loans receivable held-for-sale	0	0
Level 2
Financial assets
Total cash, cash equivalents, restricted cash, and restricted cash equivalents	0	0
Trading account assets	6,457	2,002
Investment securities available for sale	6,985,306	3,867,770
Private equity investments	0	0
Mutual funds	0	0
Mutual funds held in rabbi trusts	0	0
Loans, net	0	0
GGL/SBA loans servicing asset	0	0
Derivative assets	136,396	19,332
Financial liabilities
Non-interest-bearing deposits	9,205,066	7,650,967
Non-time interest-bearing deposits	18,264,053	14,065,959
Time deposits	10,542,659	4,989,570
Total deposits	38,011,778	26,706,496
Federal funds purchased and securities sold under repurchase agreements	0	0
Other short-term borrowings	1,330,000	650,000
Long-term debt	2,334,573	1,649,642
Earnout liability	0	0
Derivative liabilities	33,242	16,535
Level 2 | Mortgage loans held for sale
Financial assets
Loans receivable held-for-sale	81,855	37,129
Level 2 | Other loans held for sale
Financial assets
Loans receivable held-for-sale	0	0
Level 3
Financial assets
Total cash, cash equivalents, restricted cash, and restricted cash equivalents	0	0
Trading account assets	0	0
Investment securities available for sale	2,017	1,785
Private equity investments	13,341	11,028
Mutual funds	0	0
Mutual funds held in rabbi trusts	0	0
Loans, net	35,674,964	25,438,890
GGL/SBA loans servicing asset	3,326	3,729
Derivative assets	0	0
Financial liabilities
Non-interest-bearing deposits	0	0
Non-time interest-bearing deposits	0	0
Time deposits	0	0
Total deposits	0	0
Federal funds purchased and securities sold under repurchase agreements	0	0
Other short-term borrowings	0	0
Long-term debt	0	0
Earnout liability	14,353	14,353
Derivative liabilities	1,049	1,673
Level 3 | Mortgage loans held for sale
Financial assets
Loans receivable held-for-sale	0	0
Level 3 | Other loans held for sale
Financial assets
Loans receivable held-for-sale	4,861	1,506
Carrying Value
Financial assets
Total cash, cash equivalents, restricted cash, and restricted cash equivalents	1,151,321	1,143,564
Trading account assets	6,457	3,130
Investment securities available for sale	7,007,012	3,991,632
Private equity investments	13,341	11,028
Mutual funds	16,390	3,168
Mutual funds held in rabbi trusts	14,816	12,844
Loans, net	35,881,185	25,696,018
GGL/SBA loans servicing asset	3,326	3,729
Derivative assets	136,396	19,332
Financial liabilities
Non-interest-bearing deposits	9,205,066	7,650,967
Non-time interest-bearing deposits	18,264,053	14,065,959
Time deposits	10,497,603	5,003,396
Total deposits	37,966,722	26,720,322
Federal funds purchased and securities sold under repurchase agreements	273,481	237,692
Other short-term borrowings	1,330,000	650,000
Long-term debt	2,306,072	1,657,157
Earnout liability	14,353	14,353
Derivative liabilities	34,291	18,208
Carrying Value | Mortgage loans held for sale
Financial assets
Loans receivable held-for-sale	81,855	37,129
Carrying Value | Other loans held for sale
Financial assets
Loans receivable held-for-sale	4,861	1,506
Fair Value
Financial assets
Total cash, cash equivalents, restricted cash, and restricted cash equivalents	1,151,321	1,143,564
Trading account assets	6,457	3,130
Investment securities available for sale	7,007,012	3,991,632
Private equity investments	13,341	11,028
Mutual funds	16,390	3,168
Mutual funds held in rabbi trusts	14,816	12,844
Loans, net	35,674,964	25,438,890
GGL/SBA loans servicing asset	3,326	3,729
Derivative assets	136,396	19,332
Financial liabilities
Non-interest-bearing deposits	9,205,066	7,650,967
Non-time interest-bearing deposits	18,264,053	14,065,959
Time deposits	10,542,659	4,989,570
Total deposits	38,011,778	26,706,496
Federal funds purchased and securities sold under repurchase agreements	273,481	237,692
Other short-term borrowings	1,330,000	650,000
Long-term debt	2,334,573	1,649,642
Earnout liability	14,353	14,353
Derivative liabilities	34,291	18,208
Fair Value | Mortgage loans held for sale
Financial assets
Loans receivable held-for-sale	81,855	37,129
Fair Value | Other loans held for sale
Financial assets
Loans receivable held-for-sale	$ 4,861	$ 1,506

Derivative Instruments (Narrati

Derivative Instruments (Narrative) (Details) - USD ($)	Jun. 30, 2019	Dec. 31, 2018
Derivative [Line Items]
Collateral requirements	$ 77,400,000
Variation margin, amount reducing derivative asset	103,000,000	$ 3,100,000
Credit Risk Contract
Derivative [Line Items]
Notional amount	102,200,000	69,900,000
Cash Flow Hedges
Derivative [Line Items]
Derivative instruments	0	0
Fair Value Hedges
Derivative [Line Items]
Derivative instruments	$ 0	$ 0

Derivative Instruments (Impact

Derivative Instruments (Impact Of Derivatives On Balance Sheet) (Details) - Derivatives not designated as hedging instruments - USD ($)	Jun. 30, 2019	Dec. 31, 2018
Derivative [Line Items]
Fair value of derivative assets	$ 136,396,000	$ 19,332,000
Fair value of derivative liabilities	34,291,000	18,208,000
Interest rate contracts
Derivative [Line Items]
Notional amount	5,799,682,000	1,840,288,000
Fair value of derivative assets	134,504,000	18,388,000
Fair value of derivative liabilities	32,193,000	15,716,000
Mortgage derivatives | Interest rate lock commitments
Derivative [Line Items]
Notional amount	119,590,000	52,420,000
Fair value of derivative assets	1,892,000	944,000
Fair value of derivative liabilities	0	0
Mortgage derivatives | Frward commitments to sell fixed-rate mortgage loans
Derivative [Line Items]
Notional amount	127,519,000	65,500,000
Fair value of derivative assets	0	0
Fair value of derivative liabilities	1,049,000	819,000
Visa derivative
Derivative [Line Items]
Fair value of derivative assets	0	0
Fair value of derivative liabilities	$ 1,049,000	$ 1,673,000

Derivative Instruments (Effect

Derivative Instruments (Effect Of Fair Value Hedges On Consolidated Statements Of Income) (Details) - Derivatives not designated as hedging instruments - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Derivative [Line Items]
Gain (Loss) Recognized in Consolidated Statements of Income	$ 233	$ (696)	$ 810	$ 238
Capital markets income | Capital markets income
Derivative [Line Items]
Gain (Loss) Recognized in Consolidated Statements of Income	221	(16)	91	(9)
Mortgage derivatives | Interest rate lock commitments | Mortgage banking income
Derivative [Line Items]
Gain (Loss) Recognized in Consolidated Statements of Income	255	(369)	948	366
Mortgage derivatives | Frward commitments to sell fixed-rate mortgage loans | Mortgage banking income
Derivative [Line Items]
Gain (Loss) Recognized in Consolidated Statements of Income	$ (243)	$ (311)	$ (229)	$ (119)

Net Income Per Common Share (Sc

Net Income Per Common Share (Schedule Of Basic And Diluted Earnings Per Share) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Basic Net Income Per Common Share:
Net income available to common shareholders	$ 153,034	$ 108,622	$ 270,070	$ 209,229
Weighted average common shares outstanding (in shares)	157,389	118,397	159,148	118,531
Net income per common share, basic (in dollars per share)	$ 0.97	$ 0.92	$ 1.70	$ 1.77
Diluted Net Income Per Common Share:
Net income available to common shareholders	$ 153,034	$ 108,622	$ 270,070	$ 209,229
Weighted average common shares outstanding (in shares)	157,389	118,397	159,148	118,531
Effect of dilutive outstanding equity-based awards, warrants, and earnout payments	1,688	742	1,760	698
Weighted average number of diluted common shares (in shares)	159,077	119,139	160,908	119,229
Net income per common share, diluted (in dollars per share)	$ 0.96	$ 0.91	$ 1.68	$ 1.75

Net Income Per Common Share (Na

Net Income Per Common Share (Narrative) (Details) - shares shares in Thousands	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Earnings Per Share [Abstract]
Potentially dilutive shares (in shares)	40	2,200

Share-based Compensation (Narra

Share-based Compensation (Narrative) (Details) shares in Thousands, $ in Thousands	Jan. 01, 2019USD ($)shares	Jun. 30, 2019USD ($)	Jun. 30, 2018USD ($)	Jun. 30, 2019USD ($)shares	Jun. 30, 2018USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Assumed (in shares) | shares				3,230
Exercised (in shares) | shares				461
Merger-related expense
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense		$ 413	$ 0	$ 4,219	$ 0
FCB Financial Holdings, Inc.
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Assumed (in shares) | shares	3,200
Exercised (in shares) | shares	136
Converted options and restricted share units, fair value	$ 41,500
Cash equivalents	3,500
FCB Financial Holdings, Inc. | Merger-related expense
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	3,900
FCB Financial Holdings, Inc. | Merger-related expense, settle in equity
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	3,500
FCB Financial Holdings, Inc. | Merger-related expense, settled in cash
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	400
FCB Financial Holdings, Inc. | FCB Financial Holdings, Inc.
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Other equity compensation, non-vested shares outstanding (in shares)	$ 7,500
Merger exchange ratio	1.055
FCB Financial Holdings, Inc. | Compensation Expense and Remaining to Purchase Price
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Converted options and restricted share units, fair value	$ 4,200

Share-based Compensation (Stock

Share-based Compensation (Stock Options) (Details) shares in Thousands	6 Months Ended
	Jun. 30, 2019$ / sharesshares
Quantity
Outstanding at January 1, 2019 (in shares) | shares	640
Assumed (in shares) | shares	3,230
Exercised (in shares) | shares	(461)
Outstanding at June 30, 2019 (in shares) | shares	3,409
Weighted-Average Exercise Price Per Share
Outstanding at January 1, 2019 (in dollars per share) | $ / shares	$ 16.93
Assumed (in dollars per share) | $ / shares	23.22
Exercised (in dollars per share) | $ / shares	19.23
Outstanding at June 30, 2019 (in dollars per share) | $ / shares	$ 22.58

Share-based Compensation (Share

Share-based Compensation (Share Units) (Details) shares in Thousands	6 Months Ended
	Jun. 30, 2019$ / sharesshares
Restricted Share Units
Quantity
Non-vested at January 1, 2019 (in shares) | shares	526
Granted (in shares) | shares	537
Assumed (in shares) | shares	136
Quantity change by TSR factor (in shares) | shares	0
Dividend equivalents granted (in shares) | shares	10
Vested (in shares) | shares	(292)
Forfeited (in shares) | shares	(82)
Non-vested at March 31, 2019 (in shares) | shares	835
Weighted-Average Grant Date Fair Value Per Share
Non-vested at January 1, 2019 (in dollars per share) | $ / shares	$ 41.18
Granted (in dollars per share) | $ / shares	36.26
Assumed (in dollars per share) | $ / shares	31.99
Quantity change by TSR factor (in dollars per share) | $ / shares	0
Dividend equivalents granted (in dollars per share) | $ / shares	36.26
Vested (in dollars per share) | $ / shares	36.78
Forfeited (in dollars per share) | $ / shares	36.14
Non-vested at March 31, 2019 (in dollars per share) | $ / shares	$ 38.49
Market Restricted Share Units
Quantity
Non-vested at January 1, 2019 (in shares) | shares	144
Granted (in shares) | shares	151
Assumed (in shares) | shares	0
Quantity change by TSR factor (in shares) | shares	(18)
Dividend equivalents granted (in shares) | shares	2
Vested (in shares) | shares	(55)
Forfeited (in shares) | shares	(19)
Non-vested at March 31, 2019 (in shares) | shares	205
Weighted-Average Grant Date Fair Value Per Share
Non-vested at January 1, 2019 (in dollars per share) | $ / shares	$ 41.91
Granted (in dollars per share) | $ / shares	36.96
Assumed (in dollars per share) | $ / shares	0
Quantity change by TSR factor (in dollars per share) | $ / shares	38.06
Dividend equivalents granted (in dollars per share) | $ / shares	36.96
Vested (in dollars per share) | $ / shares	38.06
Forfeited (in dollars per share) | $ / shares	40.94
Non-vested at March 31, 2019 (in dollars per share) | $ / shares	$ 39.68
Performance Share Units
Quantity
Non-vested at January 1, 2019 (in shares) | shares	248
Granted (in shares) | shares	140
Assumed (in shares) | shares	0
Quantity change by TSR factor (in shares) | shares	0
Dividend equivalents granted (in shares) | shares	10
Vested (in shares) | shares	(93)
Forfeited (in shares) | shares	(31)
Non-vested at March 31, 2019 (in shares) | shares	274
Weighted-Average Grant Date Fair Value Per Share
Non-vested at January 1, 2019 (in dollars per share) | $ / shares	$ 38.29
Granted (in dollars per share) | $ / shares	37.34
Assumed (in dollars per share) | $ / shares	0
Quantity change by TSR factor (in dollars per share) | $ / shares	0
Dividend equivalents granted (in dollars per share) | $ / shares	37.34
Vested (in dollars per share) | $ / shares	26.35
Forfeited (in dollars per share) | $ / shares	40.65
Non-vested at March 31, 2019 (in dollars per share) | $ / shares	$ 41.56

Share-based Compensation (Expen

Share-based Compensation (Expense) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Salaries and other personnel expense
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Share-based compensation expense	$ 5,405	$ 3,976	$ 11,713	$ 7,749
Merger-related expense
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Share-based compensation expense	413	0	4,219	0
Other operating expenses
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Share-based compensation expense	163	389	293	571
Non-interest expense
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Share-based compensation expense	$ 5,981	$ 4,365	$ 16,225	$ 8,320

Leases (Details)

Leases (Details) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2019USD ($)	Jun. 30, 2019USD ($)renewal_option	Jan. 01, 2019USD ($)
Assets and Liabilities, Lessee [Abstract]
Assets operating	$ 373,675	$ 373,675	$ 381,100
Assets finance	3,233	3,233
Total leased assets	376,908	376,908
Liabilities operating	381,345	381,345	391,000
Present value of lease liabilities	3,050	3,050
Total lease liabilities	384,395	384,395
Finance lease asset, accumulated amortization	448	448
Lease, Cost [Abstract]
Operating lease cost, net	8,137	16,309
Amortization of leased assets	224	448
Interest on lease liabilities	19	39
Sublease income	(157)	(323)
Net lease cost	8,223	16,473
Rental income	$ 639	$ 1,200
Weighted-average remaining lease term (years), Operating leases	21 years 6 months	21 years 6 months
Weighted-average discount rate (percentage), Operating leases	3.55%	3.55%
Weighted-average remaining lease term (years), Finance leases	4 years 2 months 12 days	4 years 2 months 12 days
Weighted-average discount rate (percentage), Finance leases	2.44%	2.44%
Operating cash flows from operating leases		$ (14,893)
Operating cash flows from finance leases		(39)
Financing cash flows from finance leases		(357)
Maturity of Lease Liabilities, Operating Leases
2019	$ 14,732	14,732
2020	29,437	29,437
2021	28,104	28,104
2022	27,369	27,369
2023	25,711	25,711
After 2023	434,340	434,340
Total lease payments	559,693	559,693
Less: Imputed interest	178,348	178,348
Present value of lease liabilities	381,345	381,345	$ 391,000
Maturity of Lease Liabilities, Finance Leases
2019	494	494
2020	871	871
2021	839	839
2022	465	465
2023	180	180
After 2023	343	343
Total lease payments	3,192	3,192
Less: Imputed interest	142	142
Present value of lease liabilities	3,050	3,050
Maturity of Lease Liabilities, Total
2019	15,226	15,226
2020	30,308	30,308
2021	28,943	28,943
2022	27,834	27,834
2023	25,891	25,891
After 2023	434,683	434,683
Total lease payments	562,885	562,885
Less: Imputed interest	178,490	178,490
Present value of lease liabilities	384,395	384,395
Minimum lease payments related to operating leases that had not yet commenced	$ 20,800	$ 20,800
Minimum
Lessee, Lease, Description [Line Items]
Term of contract	1 year	1 year
Number of renewal options | renewal_option		1
Maximum
Lessee, Lease, Description [Line Items]
Term of contract	5 years	5 years

Commitments and Contingencies_2

Commitments and Contingencies (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Loss Contingencies [Line Items]
Carrying amount included in other assets	$ 79,541,000		$ 79,541,000		$ 83,736,000
Amount of future funding commitments included in carrying amount	28,382,000		28,382,000		47,123,000
Short-term construction loans and letter of credit commitments	259,000		259,000		1,585,000
Funded portion of short-term loans and letters of credit	2,822,000		2,822,000		5,595,000
Contractual amount net of risk participations	34,000,000		34,000,000		46,000,000
Guarantor obligations, advanced payment to merchant	22,600,000		22,600,000
Minimum
Loss Contingencies [Line Items]
Total unfunded lending commitments and letters of credit	0		0
Maximum
Loss Contingencies [Line Items]
Total unfunded lending commitments and letters of credit	5,000,000		5,000,000
Guarantee obligations
Loss Contingencies [Line Items]
Total unfunded lending commitments and letters of credit	12,052,850,000		12,052,850,000		10,153,558,000
Maximum potential exposure for sponsored transactions	18,880,000,000	$ 17,630,000,000	36,590,000,000	$ 34,350,000,000
Letters of credit
Loss Contingencies [Line Items]
Total unfunded lending commitments and letters of credit	216,304,000		216,304,000		157,675,000
Commitments to fund commercial and industrial loans
Loss Contingencies [Line Items]
Total unfunded lending commitments and letters of credit	6,065,365,000		6,065,365,000		5,527,017,000
Commitments to fund commercial real estate, construction, and land development loans
Loss Contingencies [Line Items]
Total unfunded lending commitments and letters of credit	3,020,509,000		3,020,509,000		2,034,223,000
Commitments under home equity lines of credit
Loss Contingencies [Line Items]
Total unfunded lending commitments and letters of credit	1,419,312,000		1,419,312,000		1,258,657,000
Unused credit card lines
Loss Contingencies [Line Items]
Total unfunded lending commitments and letters of credit	857,536,000		857,536,000		775,003,000
Other loan commitments
Loss Contingencies [Line Items]
Total unfunded lending commitments and letters of credit	$ 473,824,000		$ 473,824,000		$ 400,983,000

Subsequent Event (Details)

Subsequent Event (Details) - Subsequent Event - Series E Preferred Stock	Jul. 01, 2019USD ($)$ / shares
Subsequent Event [Line Items]
Face amount	$ 350,000,000
Proceeds from issuance of debt	$ 341,500,000
Redemption period from regulatory capital treatment	90 days
Preferred stock, redemption price per share (in usd per share) | $ / shares	$ 25
Until July 1, 2024 (Excluding July 1, 2024)
Subsequent Event [Line Items]
Preferred stock, dividend rate, percentage	5.875%
From July 1, 2024 (Including July 1, 2024)
Subsequent Event [Line Items]
Preferred stock, dividend rate, percentage	4.127%