Synovus Financial (SNV) 10-Q 5 Nov 15 2015 Q3 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	9 Months Ended
	Sep. 30, 2015	Oct. 31, 2015
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2015
Document Fiscal Year Focus	2,015
Document Fiscal Period Focus	Q3
Entity Registrant Name	SYNOVUS FINANCIAL CORP
Entity Central Index Key	18,349
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		130,600,417

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
ASSETS
Cash and cash equivalents	$ 329,396	$ 485,489
Interest bearing funds with Federal Reserve Bank	837,641	721,362
Interest earning deposits with banks	21,170	11,810
Federal funds sold and securities purchased under resale agreements	69,732	73,111
Trading account assets, at fair value	5,844	13,863
Mortgage loans held for sale, at fair value	73,623	63,328
Investment securities available for sale, at fair value	3,487,332	3,041,406
Loans, net of deferred fees and costs	21,864,309	21,097,699
Allowance for loan losses	(250,900)	(261,317)
Loans, net	21,613,409	20,836,382
Premises and equipment, net	449,078	455,235
Goodwill	24,431	24,431
Other real estate	64,346	85,472
Deferred tax asset, net	526,492	622,464
Other assets	665,333	616,878
Total assets	28,167,827	27,051,231
LIABILITIES AND SHAREHOLDERS' EQUITY
Non-interest bearing deposits	6,570,227	6,228,472
Interest bearing deposits, excluding brokered deposits	14,961,388	13,660,830
Brokered deposits	1,245,798	1,642,398
Total deposits	22,777,413	21,531,700
Federal funds purchased and securities sold under repurchase agreements	135,475	126,916
Long-term debt	2,038,719	2,140,319
Other liabilities	199,104	211,026
Total liabilities	25,150,711	24,009,961
Shareholders' Equity:
Series C Preferred Stock – no par value. 5,200,000 shares outstanding at September 30, 2015 and December 31, 2014	125,980	125,980
Common stock - $1.00 par value. Authorized 342,857,143 shares; 140,525,608 issued at September 30, 2015 and 139,950,422 issued at December 31, 2014; 130,632,731 outstanding at September 30, 2015 and 136,122,843 outstanding at December 31, 2014	140,526	139,950
Additional paid-in capital	2,986,333	2,960,825
Treasury stock, at cost – 9,892,877 shares at September 30, 2015 and 3,827,579 shares at December 31, 2014	(364,428)	(187,774)
Accumulated other comprehensive loss, net	(6,092)	(12,605)
Retained earnings	134,797	14,894
Total shareholders' equity	3,017,116	3,041,270
Total liabilities and shareholders' equity	$ 28,167,827	$ 27,051,231

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Sep. 30, 2015	Dec. 31, 2014
Statement of Financial Position [Abstract]
Preferred stock, shares outstanding	5,200,000	5,200,000
Common stock, par value (per share)	$ 1	$ 1
Common stock, shares authorized	342,857,143	342,857,143
Common stock, shares issued	140,525,608	139,950,422
Common stock, shares outstanding	130,632,731	136,122,843
Treasury stock, shares at cost	9,892,877	3,827,579

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Interest income:
Loans, including fees	$ 220,782	$ 217,288	$ 652,807	$ 644,392
Investment securities available for sale	14,926	14,029	43,043	43,775
Trading account assets	34	106	258	357
Mortgage loans held for sale	662	701	2,060	1,719
Federal Reserve Bank balances	821	562	2,413	1,561
Other earning assets	868	708	2,567	2,185
Total interest income	238,093	233,394	703,148	693,989
Interest expense:
Deposits	17,227	13,504	48,859	41,246
Federal funds purchased and securities sold under repurchase agreements	46	35	134	186
Long-term debt	13,030	13,592	39,457	40,728
Total interest expense	30,303	27,131	88,450	82,160
Net interest income	207,790	206,263	614,698	611,829
Provision for loan losses	2,956	3,843	13,990	25,638
Net interest income after provision for loan losses	204,834	202,420	600,708	586,191
Non-interest income:
Service charges on deposit accounts	20,692	20,159	59,621	58,610
Fiduciary and asset management fees	11,308	11,207	34,722	33,536
Brokerage revenue	6,946	7,281	20,978	20,201
Mortgage banking income	5,965	4,665	19,960	13,459
Bankcard fees	8,334	8,182	24,910	24,394
Investment securities gains, net	0	0	2,710	1,331
Other fee income	5,521	4,704	15,371	14,495
Gain on sale of Memphis branches, net	0	0	0	5,789
Other non-interest income	8,293	7,787	23,474	25,740
Total non-interest income	67,059	63,985	201,746	197,555
Non-interest expense:
Salaries and other personnel expense	94,341	93,870	285,394	279,855
Net occupancy and equipment expense	26,937	26,956	79,650	79,436
Third-party processing expense	10,844	10,044	31,858	29,604
FDIC insurance and other regulatory fees	6,591	7,839	20,315	25,369
Professional fees	6,371	2,526	18,382	18,427
Advertising expense	5,488	7,177	11,797	15,935
Foreclosed real estate expense, net	4,503	9,074	18,350	18,818
Visa indemnification charges	363	1,979	1,092	2,731
Restructuring charges, net	69	809	(33)	17,101
Other operating expenses	22,400	33,475	67,816	72,839
Total non-interest expense	177,907	193,749	534,621	560,115
Income before income taxes	93,986	72,656	267,833	223,631
Income tax expense	36,058	25,868	100,149	81,554
Net income	57,928	46,788	167,684	142,077
Dividends on preferred stock	2,559	2,559	7,678	7,678
Net income available to common shareholders	$ 55,369	$ 44,229	$ 160,006	$ 134,399
Net income per common share, basic	$ 0.42	$ 0.32	$ 1.20	$ 0.97
Net income per common share, diluted	$ 0.42	$ 0.32	$ 1.20	$ 0.96
Weighted average common shares outstanding, basic	131,516	139,043	133,120	138,989
Weighted average common shares outstanding, diluted	132,297	139,726	133,876	139,600

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Statement of Comprehensive Income [Abstract]
Net income, Before-tax Amount	$ 93,986	$ 72,656	$ 267,833	$ 223,631
Net income, Tax (Expense) Benefit	(36,058)	(25,868)	(100,149)	(81,554)
Net income	57,928	46,788	167,684	142,077
Reclassification adjustment for losses realized in net income, Before-tax Amount	112	112	336	336
Reclassification adjustment for losses realized in net income, Tax (Expense) Benefit	(43)	(43)	(130)	(130)
Reclassification adjustment for losses realized in net income, Net of Tax Amount	69	69	206	206
Net unrealized (losses) gains on investment securities available for sale:
Reclassification adjustment for net gains realized in net income, Before-tax Amount			(2,710)	(1,331)
Net unrealized gains (losses) arising during the period, Before-tax Amount	26,374	(18,173)	12,907	27,467
Net unrealized (losses) gains, Before-tax Amount	26,374	(18,173)	10,197	26,136
Net unrealized (losses) gains on investment securities available for sale: Tax (Expense) Benefit
Reclassification adjustment for net gains realized in net income, Tax (Expense) Benefit			1,043	513
Net unrealized gains (losses) arising during the period, Tax (Expense) Benefit	(10,154)	6,993	(4,966)	(10,579)
Net unrealized (losses) gains, Tax (Expense) Benefit	(10,154)	6,993	(3,923)	(10,066)
Net unrealized (losses) gains on investment securities available for sale: Net of Tax Amount
Reclassification adjustment for net gains realized in net income, Net of Tax Amount			(1,667)	(818)
Net unrealized gains (losses) arising during the period, Net of Tax Amount	16,220	(11,180)	7,941	16,888
Net unrealized (losses) gains, Net of Tax Amount	16,220	(11,180)	6,274	16,070
Post-retirement unfunded health benefit: Before-tax Amount
Reclassification adjustment for gains realized in net income, Before-tax Amount	(94)	0	(178)	(144)
Actuarial gains arising during the period, Before-tax Amount	0	0	236	395
Net unrealized gains, Before-tax Amount	(94)	0	58	251
Post-retirement unfunded health benefit: Tax (Expense) Benefit
Reclassification adjustment for gains realized in net income, Tax (Expense) Benefit	36	0	68	56
Actuarial gains arising during the period, Tax (Expense) Benefit	0	0	(93)	(152)
Net unrealized gains, Tax (Expense) Benefit	36	0	(25)	(96)
Post-retirement unfunded health benefit: Net of Tax Amount
Reclassification adjustment for gains realized in net income, Net of Tax Amount	(58)	0	(110)	(88)
Actuarial gains arising during the period, Net of Tax Amount	0	0	143	243
Net unrealized gains, Net of Tax Amount	(58)	0	33	155
Other comprehensive income (loss), Before-tax Amount	26,392	(18,061)	10,591	26,723
Other comprehensive income (loss), Tax (Expense) Benefit	(10,161)	6,950	(4,078)	(10,292)
Other comprehensive income (loss), Net of Tax Amount	16,231	(11,111)	6,513	16,431
Comprehensive income, Net of Tax Amount	$ 74,159	$ 35,677	$ 174,197	$ 158,508

Consolidated Statements of Chan

Consolidated Statements of Changes in Equity - USD ($) $ in Thousands	Total	Series C Preferred Stock [Member]	Preferred Stock [Member]Series C Preferred Stock [Member]	Common Stock [Member]	Additional Paid-In Capital [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Retained Earnings (Deficit) [Member]	Retained Earnings (Deficit) [Member]Series C Preferred Stock [Member]
Balance at Dec. 31, 2013	$ 2,948,985		$ 125,862	$ 139,721	$ 2,976,348	$ (114,176)	$ (41,258)	$ (137,512)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	142,077							142,077
Other comprehensive income, net of income taxes	16,431						16,431
Cash dividends declared on common stock	(29,194)							(29,194)
Cash dividends paid on Series C Preferred Stock	(7,678)				(7,678)
Issuance of stock, net of issuance costs	118		118
Restricted share unit activity	(468)			41	(509)
Stock options exercised	1,985			116	1,869
Share-based compensation net tax (deficiency) benefit	(3,164)				(3,164)
Share-based compensation expense	7,453				7,453
Balance at Sep. 30, 2014	3,076,545		125,980	139,878	2,974,319	(114,176)	(24,827)	(24,629)
Balance at Dec. 31, 2014	3,041,270		125,980	139,950	2,960,825	(187,774)	(12,605)	14,894
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	167,684							167,684
Other comprehensive income, net of income taxes	6,513						6,513
Cash dividends declared on common stock	(39,736)							(39,736)
Cash dividends paid on Series C Preferred Stock		$ (7,678)							$ (7,678)
Issuance of stock, net of issuance costs	(162,138)				14,516	(176,654)
Restricted share unit activity	(4,461)			282	(4,376)			(367)
Stock options exercised	4,897			294	4,603
Share-based compensation net tax (deficiency) benefit	1,303				1,303
Share-based compensation expense	9,462				9,462
Balance at Sep. 30, 2015	$ 3,017,116		$ 125,980	$ 140,526	$ 2,986,333	$ (364,428)	$ (6,092)	$ 134,797

Consolidated Statements of Cha7

Consolidated Statements of Changes in Equity (Parenthetical) - $ / shares	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Statement of Stockholders' Equity [Abstract]
Cash dividends declared on common stock, per share	$ 0.30	$ 0.21

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Operating Activities
Net income	$ 167,684	$ 142,077
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan losses	13,990	25,638
Depreciation, amortization, and accretion, net	42,725	39,524
Deferred income tax expense	93,198	74,940
Decrease (increase) in trading account assets	8,019	(6,592)
Originations of mortgage loans held for sale	(656,987)	(579,139)
Proceeds from sales of mortgage loans held for sale	658,787	561,796
Gain on sales of mortgage loans held for sale, net	(12,531)	(8,971)
(Increase) decrease in other assets	(12,534)	816
(Decrease) increase in other liabilities	(11,679)	20,131
Investment securities gains, net	(2,710)	(1,331)
Losses and write-downs on other real estate, net	14,864	16,734
Share-based compensation expense	9,462	7,453
Write-downs on other assets held for sale	1,043	7,608
Gain on sale of Memphis branches, net	0	(5,789)
Net cash provided by operating activities	313,331	294,895
Investing Activities
Net cash used in dispositions	0	(90,571)
Net (increase) decrease in interest earning deposits with banks	(9,360)	10,713
Net decrease in federal funds sold and securities purchased under resale agreements	3,378	10,057
Net increase in interest bearing funds with Federal Reserve Bank	(116,278)	(105,918)
Proceeds from maturities and principal collections of investment securities available for sale	517,077	417,704
Proceeds from sales of investment securities available for sale	82,156	20,815
Purchases of investment securities available for sale	(1,048,048)	(277,375)
Proceeds from sales of loans and principal repayments on other loans held for sale	28,045	44,771
Proceeds from sale of other real estate	30,124	49,754
Net increase in loans	(839,971)	(754,930)
Purchases of BOLI policies	(45,000)	0
Net increase in premises and equipment	(21,667)	(31,221)
Proceeds from sale of other assets held for sale	2,304	507
Net cash used in investing activities	(1,417,240)	(705,694)
Financing Activities
Net increase in demand and savings deposits	1,500,506	8,677
Net (decrease) increase in certificates of deposit	(254,793)	295,687
Net increase (decrease) in federal funds purchased and securities sold under repurchase agreements	8,559	(40,972)
Principal repayments on long-term debt	(525,000)	(800,667)
Proceeds from issuance of long-term debt	425,000	900,000
Dividends paid to common shareholders	(39,736)	(29,194)
Dividends paid to preferred shareholders	(7,678)	(7,678)
Stock options exercised	4,897	1,985
Repurchases of common stock	(162,138)	0
Excess tax benefit from share-based compensation	2,660	201
Restricted stock activity	(4,461)	(468)
Net cash provided by financing activities	947,816	327,571
Decrease in cash and cash equivalents	(156,093)	(83,228)
Cash and cash equivalents at beginning of period	485,489	469,630
Cash and cash equivalents at end of period	329,396	386,402
Supplemental Cash Flow Information
Income tax payments (refunds), net	9,109	4,693
Interest paid	86,451	83,861
Non-cash Investing Activities:
Premises and equipment transferred to other assets held for sale	1,477	16,613
Loans foreclosed and transferred to other real estate	23,862	35,495
Dispositions:
Fair value of non-cash assets sold	0	(100,982)
Fair value of liabilities sold	$ 0	$ (191,553)

Significant Accounting Policies

Significant Accounting Policies	9 Months Ended
	Sep. 30, 2015
Significant Accounting Policies [Abstract]
Significant Accounting Policies	Note 1 - Significant Accounting Policies Business Operations The accompanying unaudited interim consolidated financial statements of Synovus include the accounts of the Parent Company and its consolidated subsidiaries. Synovus provides integrated financial services including commercial and retail banking, financial management, insurance and mortgage services to customers through locally-branded divisions of its wholly-owned subsidiary bank, Synovus Bank, in offices located in Georgia, Alabama, South Carolina, Florida, and Tennessee. In addition to our banking operations, we also provide various other financial services to our customers through direct and indirect wholly-owned non-bank subsidiaries, including: Synovus Securities, Inc., headquartered in Columbus, Georgia, which specializes in professional portfolio management for fixed-income securities, investment banking, the execution of securities transactions as a broker/dealer and the provision of individual investment advice on equity and other securities; Synovus Trust Company, N.A., headquartered in Columbus, Georgia, which provides trust, asset management and financial planning services; and Synovus Mortgage Corp., headquartered in Birmingham, Alabama, which offers mortgage services. 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' 2014 Form 10-K. There have been no significant changes to the accounting policies as disclosed in Synovus' 2014 Form 10-K. In preparing the unaudited interim consolidated financial statements in accordance with GAAP, management is required to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities as of the date of the respective consolidated balance sheets and the reported amounts of revenues and expenses for the periods presented. Actual results could differ significantly from those estimates. Material estimates that are particularly susceptible to significant change relate to the determination of the allowance for loan losses, the valuation of other real estate, the fair value of investment securities, the fair value of private equity investments, contingent liabilities related to legal matters, and the deferred tax assets valuation allowance. Cash and Cash Equivalents Cash and cash equivalents consist of cash and due from banks. At September 30, 2015 , no amount of the due from banks balance was restricted as to withdrawal. At December 31, 2014 , $ 125 thousand of the due from banks balance was restricted as to withdrawal. Short-term Investments Short-term investments consist of interest bearing funds with the Federal Reserve Bank, interest earning deposits with banks, and Federal funds sold and securities purchased under resale agreements. At September 30, 2015 and December 31, 2014 , interest bearing funds with the Federal Reserve Bank included $116.3 million and $89.7 million , respectively, on deposit to meet Federal Reserve Bank requirements. Interest earning deposits with banks include $7.0 million and $7.1 million at September 30, 2015 and December 31, 2014 , respectively, which is pledged as collateral in connection with certain letters of credit. Federal funds sold include $68.4 million and $67.5 million at September 30, 2015 and December 31, 2014 , respectively, which are pledged to collateralize certain derivative instruments. Federal funds sold and securities purchased under resale agreements, and Federal funds purchased and securities sold under repurchase agreements, generally mature in one day. Recently Adopted Accounting Standards Updates During 2014, the FASB issued the following ASUs, all of which became effective January 1, 2015: • ASU 2014-01, Investments-Equity Method and Joint Ventures (Topic 323), Accounting for Investments in Qualified Affordable Housing Projects In January 2014, the FASB issued amended guidance which permits Synovus to make an accounting policy election to account for its investments in qualified affordable housing projects using a proportional amortization method, if certain conditions are met, and to present the amortization as a component of income tax expense. The amended guidance would be applied retrospectively to all periods presented and is effective for fiscal years, and interim periods within those years, beginning after December 15, 2014. Regardless of the policy election, the amended guidance, where disclosed, enables the users of the financial statements to understand the nature of investments in qualified affordable housing projects and the effect of the measurement of the investments in qualified affordable housing projects and the related tax credits on Synovus’ financial position and results of operations. Synovus adopted the amended guidance on January 1, 2015, and did not make an accounting policy election to apply the proportional amortization method for its investments in qualified affordable housing projects because the impact to the consolidated financial statements was insignificant. Therefore, the adoption did not have an impact on Synovus’ consolidated financial statements. At September 30, 2015 , the aggregate carrying value of Synovus' investments in LIHTC partnerships was $19.6 million . See Note 18 "Variable Interest Entities" to the consolidated financial statements of Synovus' 2014 Form 10-K for additional information regarding these investments. Additionally, adoption of the following standards effective January 1, 2015 did not have a significant impact on Synovus’ consolidated financial statements. • ASU 2014-14, Classification of Certain Government-Guaranteed Mortgage Loans upon Foreclosure • ASU 2014-12, Accounting for Share-Based Payments when the Terms of an Award Provide that a Performance Target Could be Achieved after the Requisite Service Period • ASU 2014-11, Repurchase-to-Maturity Transactions, Repurchase Financings, and Disclosures • ASU 2014-08, Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity • ASU 2014-04, Receivables -Troubled Debt Restructurings by Creditors (Subtopic 310-40), Reclassification of Residential Real Estate Collateralized Consumer Mortgage Loans upon Foreclosure Reclassifications Prior periods' consolidated financial statements are reclassified whenever necessary to conform to the current periods' presentation. Subsequent Events Synovus has evaluated for consideration, or disclosure, all transactions, events, and circumstances, subsequent to the date of the consolidated balance sheet and through the date the accompanying unaudited interim consolidated financial statements were issued, and has reflected, or disclosed, those items deemed appropriate within the unaudited interim consolidated financial statements.

Share Repurchase Programs

Share Repurchase Programs	9 Months Ended
	Sep. 30, 2015
Equity [Abstract]
Share Repurchase Program	Note 2 - Share Repurchase Programs During the third quarter of 2015, Synovus completed the $250 million share repurchase program which was announced on October 21, 2014 and had an expiration date of October 23, 2015. Total repurchases under this program amounted to $250.0 million , or 9.1 million shares at an average price of $27.53 , of common stock through a combination of share repurchases under the accelerated share repurchase (ASR) agreement described below and open market transactions. Synovus entered into the ASR agreement during October 2014 to purchase $75.0 million of Synovus common stock under the share repurchase program. As of December 31, 2014, Synovus had repurchased 2.5 million shares of common stock under the ASR agreement. During January 2015, Synovus repurchased 392 thousand shares upon completion of the ASR agreement. Additionally, from October 2014 through September 30, 2015 , Synovus repurchased $175.0 million , or 6.2 million shares, of common stock through open market transactions, including $161.9 million , or 5.7 million shares, of common stock repurchased during the nine months ended September 30, 2015. On October 20, 2015, Synovus announced a $300 million share repurchase program, which will expire after a 15 month period.

Sale of Branches

Sale of Branches	9 Months Ended
	Sep. 30, 2015
Restructuring and Related Activities [Abstract]
Sale of Branches	Note 3 - Sale of Branches On January 17, 2014, Synovus completed the sale of certain loans, premises, deposits, and other assets and liabilities of the Memphis, Tennessee branches of Trust One Bank, a division of Synovus Bank. The sale included $89.6 million in total loans and $191.3 million in total deposits. Results for the nine months ended September 30, 2014 reflect a pre-tax gain, net of associated costs, of $5.8 million relating to this transaction.

Investment Securities

Investment Securities	9 Months Ended
	Sep. 30, 2015
Investments [Abstract]
Investment Securities	Note 4 - Investment Securities The amortized cost, gross unrealized gains and losses, and estimated fair values of investment securities available for sale at September 30, 2015 and December 31, 2014 are summarized below. September 30, 2015 (in thousands) Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value U.S. Treasury securities $ 43,159 514 — 43,673 U.S. Government agency securities 13,096 705 — 13,801 Securities issued by U.S. Government sponsored enterprises 126,734 866 — 127,600 Mortgage-backed securities issued by U.S. Government agencies 208,785 2,458 (388 ) 210,855 Mortgage-backed securities issued by U.S. Government sponsored enterprises 2,531,543 22,314 (5,764 ) 2,548,093 Collateralized mortgage obligations issued by U.S. Government agencies or sponsored enterprises 505,498 6,039 (917 ) 510,620 State and municipal securities 4,437 110 (1 ) 4,546 Equity securities 3,228 5,243 — 8,471 Other investments 20,161 51 (539 ) 19,673 Total investment securities available for sale $ 3,456,641 38,300 (7,609 ) 3,487,332 December 31, 2014 (in thousands) Amortized Cost (1) Gross Unrealized Gains Gross Unrealized Losses Fair Value U.S. Treasury securities $ 42,636 190 — 42,826 U.S. Government agency securities 26,426 898 — 27,324 Securities issued by U.S. Government sponsored enterprises 81,332 710 — 82,042 Mortgage-backed securities issued by U.S. Government agencies 177,678 2,578 (440 ) 179,816 Mortgage-backed securities issued by U.S. Government sponsored enterprises 2,250,897 19,915 (9,131 ) 2,261,681 Collateralized mortgage obligations issued by U.S. Government agencies or sponsored enterprises 414,562 4,856 (2,342 ) 417,076 State and municipal securities 5,024 183 (1 ) 5,206 Equity securities 3,228 3,520 6,748 Other investments 19,121 7 (441 ) 18,687 Total investment securities available for sale $ 3,020,904 32,857 (12,355 ) 3,041,406 (1) Amortized cost is adjusted for other-than-temporary impairment charges in 2014 , which have been recognized in the consolidated statements of income and were considered inconsequential. At September 30, 2015 and December 31, 2014 , investment securities with a carrying value of $2.13 billion and $2.12 billion respectively, were pledged to secure certain deposits and securities sold under repurchase agreements as required by law and contractual agreements. Synovus has reviewed investment securities that are in an unrealized loss position as of September 30, 2015 and December 31, 2014 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 income. Synovus does not intend to sell investment securities in an unrealized loss position prior to the recovery of the unrealized loss, which may 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. Declines in the fair value of available for sale securities below their cost that are deemed to have OTTI are reflected in earnings as realized losses to the extent the impairment is related to credit losses. The amount of the impairment related to other factors is recognized in other comprehensive income. 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 September 30, 2015 , Synovus had eight investment securities in a loss position for less than twelve months and thirty-two investment securities in a loss position for twelve months or longer. 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 September 30, 2015 and December 31, 2014 , are presented below. September 30, 2015 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 — — 18,912 388 18,912 388 Mortgage-backed securities issued by U.S. Government sponsored enterprises 225,845 745 591,427 5,019 817,272 5,764 Collateralized mortgage obligations issued by U.S. Government agencies or sponsored enterprises — — 76,198 917 76,198 917 State and municipal securities — — 48 1 48 1 Other investments — — 4,623 539 4,623 539 Total $ 225,845 745 691,208 6,864 917,053 7,609 December 31, 2014 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 — — 21,488 440 21,488 440 Mortgage-backed securities issued by U.S. Government sponsored enterprises 251,134 763 798,282 8,368 1,049,416 9,131 Collateralized mortgage obligations issued by U.S. Government agencies or sponsored enterprises 20,338 61 119,172 2,281 139,510 2,342 State and municipal securities — — 45 1 45 1 Other investments — — 3,680 441 3,680 441 Total $ 271,472 824 942,667 11,531 1,214,139 12,355 The amortized cost and fair value by contractual maturity of investment securities available for sale at September 30, 2015 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 September 30, 2015 (in thousands) Within One Year 1 to 5 Years 5 to 10 Years More Than 10 Years No Stated Maturity Total Amortized Cost U.S. Treasury securities $ 18,287 24,872 — — — 43,159 U.S. Government agency securities — 6,676 6,420 — — 13,096 Securities issued by U.S. Government sponsored enterprises 80,679 46,055 — — — 126,734 Mortgage-backed securities issued by U.S. Government agencies — — 20,052 188,733 — 208,785 Mortgage-backed securities issued by U.S. Government sponsored enterprises — 870 1,881,955 648,718 — 2,531,543 Collateralized mortgage obligations issued by U.S. Government agencies or sponsored enterprises — — — 505,498 — 505,498 State and municipal securities 1,082 748 — 2,607 — 4,437 Equity securities — — — — 3,228 3,228 Other investments — — 15,000 2,000 3,161 20,161 Total amortized cost $ 100,048 79,221 1,923,427 1,347,556 6,389 3,456,641 Fair Value U.S. Treasury securities $ 18,287 25,386 — — — 43,673 U.S. Government agency securities — 6,990 6,811 — — 13,801 Securities issued by U.S. Government sponsored enterprises 81,139 46,461 — — — 127,600 Mortgage-backed securities issued by U.S. Government agencies — — 20,441 190,414 — 210,855 Mortgage-backed securities issued by U.S. Government sponsored enterprises — 910 1,886,916 660,267 — 2,548,093 Collateralized mortgage obligations issued by U.S. Government agencies or sponsored enterprises — — — 510,620 — 510,620 State and municipal securities 1,097 755 — 2,694 — 4,546 Equity securities — — — — 8,471 8,471 Other investments — — 15,051 1,531 3,091 19,673 Total fair value $ 100,523 80,502 1,929,219 1,365,526 11,562 3,487,332 Proceeds from sales, gross gains, and gross losses on sales of securities available for sale for the nine and three months ended September 30, 2015 and 2014 are presented below. Other-than-temporary impairment charges of $88 thousand are included in gross realized losses for the nine months ended September 30, 2014 . The specific identification method is used to reclassify gains and losses out of other comprehensive income at the time of sale. Nine Months Ended September 30, Three Months Ended September 30, (in thousands) 2015 2014 2015 2014 Proceeds from sales of investment securities available for sale $ 82,156 20,815 — — Gross realized gains 2,710 1,419 — — Gross realized losses — (88 ) — — Investment securities gains, net $ 2,710 1,331 — —

Restructuring Charges

Restructuring Charges	9 Months Ended
	Sep. 30, 2015
Restructuring Charges [Abstract]
Restructuring Charges	Note 5 - Restructuring Charges For the nine and three months ended September 30, 2015 and 2014 , total restructuring charges consist of the following components: Nine Months Ended September 30, Three Months Ended September 30, (in thousands) 2015 2014 2015 2014 Severance charges $ — 8,046 $ — — Lease termination charges (4 ) — — — Asset impairment charges 229 7,374 229 36 Gain on sale of assets held for sale, net (374 ) — (217 ) — Professional fees and other charges 116 1,681 57 773 Total restructuring charges, net $ (33 ) 17,101 $ 69 809 For the nine months ended September 30, 2015 , Synovus recorded net gains of $374 thousand on the sale of certain branch locations and recorded additional expense, net of $341 thousand associated primarily with the 2014 branch closings. Restructuring charges for the nine and three months ended September 30, 2014 related primarily to expense savings initiatives that were approved during 2014. The initiatives included the consolidation or closing of certain branch locations as well as workforce reductions. Severance charges for the nine months ended September 30, 2014 consisted of estimated involuntary termination benefits for targeted staff reductions identified during 2014. These termination benefits were provided under an ongoing benefit arrangement as defined in ASC 712, Compensation-Nonretirement Postemployment Benefits ; accordingly, the charges were recorded pursuant to the liability recognition criteria of ASC 712. Asset impairment charges for the nine and three months ended September 30, 2014 were recorded following the decision to close 13 branches during 2014. Additionally, substantially all of the professional fees and other charges for the nine and three months ended September 30, 2014 consisted of professional fees incurred in connection with an organizational restructuring implemented during 2014. The following table presents aggregate activity associated with accruals that resulted from restructuring charges during the nine and three months ended September 30, 2015 and 2014 : Severance Charges Lease Termination Charges Total (in thousands) Balance at December 31, 2014 $ 3,291 5,539 8,830 Accruals for efficiency initiatives — (4 ) (4 ) Payments (1,259 ) (608 ) (1,867 ) Balance at September 30, 2015 2,032 4,927 6,959 Balance at July 1, 2015 2,253 5,124 7,377 Accruals for efficiency initiatives — — — Payments (221 ) (197 ) (418 ) Balance at September 30, 2015 $ 2,032 4,927 6,959 Severance Charges Lease Termination Charges Total (in thousands) Balance at December 31, 2013 $ 1,572 1,383 2,955 Accruals for efficiency initiatives 8,046 — 8,046 Payments (4,965 ) (1,312 ) (6,277 ) Balance at September 30, 2014 4,653 71 4,724 Balance at July 1, 2014 6,224 78 6,302 Accruals for efficiency initiatives — — — Payments (1,571 ) (7 ) (1,578 ) Balance at September 30, 2014 $ 4,653 71 4,724 All professional fees and other charges were paid in the years that they were incurred. No other restructuring charges resulted in payment accruals.

Loans and Allowance for Loan Lo

Loans and Allowance for Loan Losses	9 Months Ended
	Sep. 30, 2015
Loans and Leases Receivable, Allowance [Abstract]
Loans and Allowance for Loan Losses	Note 6 - Loans and Allowance for Loan Losses The following is a summary of current, accruing past due, and non-accrual loans by portfolio class as of September 30, 2015 and December 31, 2014 . Current, Accruing Past Due, and Non-accrual Loans September 30, 2015 (in thousands) Current Accruing 30-89 Days Past Due Accruing 90 Days or Greater Past Due Total Accruing Past Due Non-accrual Total Investment properties $ 5,544,594 2,400 — 2,400 10,582 5,557,576 1-4 family properties 1,073,356 4,122 81 4,203 16,994 1,094,553 Land acquisition 517,728 1,322 67 1,389 19,010 538,127 Total commercial real estate 7,135,678 7,844 148 7,992 46,586 7,190,256 Commercial, financial and agricultural 6,219,484 7,095 533 7,628 50,656 6,277,768 Owner-occupied 4,241,159 5,969 132 6,101 18,148 4,265,408 Total commercial and industrial 10,460,643 13,064 665 13,729 68,804 10,543,176 Home equity lines 1,662,930 4,557 297 4,854 16,263 1,684,047 Consumer mortgages 1,857,640 6,284 378 6,662 24,154 1,888,456 Credit cards 238,519 1,473 1,323 2,796 — 241,315 Other retail loans 340,277 3,128 187 3,315 1,833 345,425 Total retail 4,099,366 15,442 2,185 17,627 42,250 4,159,243 Total loans $ 21,695,687 36,350 2,998 39,348 157,640 21,892,675 (1 ) December 31, 2014 (in thousands) Current Accruing 30-89 Days Past Due Accruing 90 Days or Greater Past Due Total Accruing Past Due Non-accrual Total Investment properties $ 5,184,103 1,851 — 1,851 20,720 5,206,674 1-4 family properties 1,105,186 4,067 432 4,499 24,197 1,133,882 Land acquisition 551,308 363 — 363 34,375 586,046 Total commercial real estate 6,840,597 6,281 432 6,713 79,292 6,926,602 Commercial, financial and agricultural 6,130,184 9,979 1,790 11,769 40,359 6,182,312 Owner-occupied 4,052,679 6,404 225 6,629 26,099 4,085,407 Total commercial and industrial 10,182,863 16,383 2,015 18,398 66,458 10,267,719 Home equity lines 1,659,869 6,992 703 7,695 16,434 1,683,998 Consumer mortgages 1,648,145 12,626 12 12,638 33,278 1,694,061 Credit cards 250,304 1,971 1,374 3,345 — 253,649 Other retail loans 297,703 2,361 101 2,462 2,295 302,460 Total retail 3,856,021 23,950 2,190 26,140 52,007 3,934,168 Total loans $ 20,879,481 46,614 4,637 51,251 197,757 21,128,489 (2 ) (1) Total before net deferred fees and costs of $28.4 million . (2) Total before net deferred fees and costs of $30.8 million . The credit quality of the loan portfolio is summarized 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. In the following tables, retail 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 Uniform Retail Credit Classification and Account Management Policy. Additionally, in accordance with the Interagency Supervisory Guidance on Allowance for Loan and Lease Losses Estimation Practices for Loans and Lines of Credit Secured by Junior Liens on 1-4 Family Residential Properties, the risk grade classifications of retail loans (home equity lines and consumer mortgages) secured by junior liens on 1-4 family residential properties also consider available information on the payment status of the associated senior lien with other financial institutions. Loan Portfolio Credit Exposure by Risk Grade September 30, 2015 (in thousands) Pass Special Mention Substandard (1) Doubtful (2) Loss Total Investment properties $ 5,357,016 125,646 74,914 — — 5,557,576 1-4 family properties 953,403 58,314 75,586 7,250 — 1,094,553 Land acquisition 451,438 52,157 34,084 448 — 538,127 Total commercial real estate 6,761,857 236,117 184,584 7,698 — 7,190,256 Commercial, financial and agricultural 6,001,990 141,305 117,256 15,789 1,428 (3) 6,277,768 Owner-occupied 4,059,211 77,470 128,091 177 459 (3) 4,265,408 Total commercial and industrial 10,061,201 218,775 245,347 15,966 1,887 10,543,176 Home equity lines 1,659,346 — 21,758 1,448 1,495 (3) 1,684,047 Consumer mortgages 1,858,377 — 28,460 1,494 125 (3) 1,888,456 Credit cards 239,992 — 497 — 826 (4) 241,315 Other retail loans 341,584 — 3,761 — 80 (3) 345,425 Total retail 4,099,299 — 54,476 2,942 2,526 4,159,243 Total loans $ 20,922,357 454,892 484,407 26,606 4,413 21,892,675 (5 ) December 31, 2014 (in thousands) Pass Special Mention Substandard (1) Doubtful (2) Loss Total Investment properties $ 4,936,319 167,490 102,865 — — 5,206,674 1-4 family properties 943,721 86,072 96,392 7,697 — 1,133,882 Land acquisition 462,313 60,902 62,101 730 — 586,046 Total commercial real estate 6,342,353 314,464 261,358 8,427 — 6,926,602 Commercial, financial and agricultural 5,905,589 143,879 123,225 9,539 80 (3) 6,182,312 Owner-occupied 3,827,943 95,647 161,045 327 445 (3) 4,085,407 Total commercial and industrial 9,733,532 239,526 284,270 9,866 525 10,267,719 Home equity lines 1,659,794 — 20,043 2,009 2,152 (3) 1,683,998 Consumer mortgages 1,653,491 — 37,656 2,654 260 (3) 1,694,061 Credit cards 252,275 — 495 — 879 (4) 253,649 Other retail loans 298,991 — 3,339 32 98 (3) 302,460 Total retail 3,864,551 — 61,533 4,695 3,389 3,934,168 Total loans $ 19,940,436 553,990 607,161 22,988 3,914 21,128,489 (6 ) (1) Includes $126.6 million and $170.9 million of non-accrual Substandard loans at September 30, 2015 and December 31, 2014 , respectively. (2) The loans within this risk grade are on non-accrual status. Commercial loans generally have an allowance for loan losses in accordance with ASC 310, and retail loans 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 Uniform Retail Credit Classification and Account Management Policy. (5) Total before net deferred fees and costs of $28.4 million . (6) Total before net deferred fees and costs of $30.8 million . The following table details the changes in the allowance for loan losses by loan segment for the nine months ended September 30, 2015 and 2014 . Allowance for Loan Losses and Recorded Investment in Loans As Of and For The Nine Months Ended September 30, 2015 (in thousands) Commercial Real Estate Commercial & Industrial Retail Unallocated Total Allowance for loan losses: Beginning balance $ 101,471 118,110 41,736 — 261,317 Charge-offs (12,120 ) (17,417 ) (16,535 ) — (46,072 ) Recoveries 10,500 5,774 5,391 — 21,665 Provision for loan losses (10,845 ) 15,954 8,881 — 13,990 Ending balance $ 89,006 122,421 $ 39,473 $ — $ 250,900 Ending balance: individually evaluated for impairment 18,091 12,568 783 — 31,441 Ending balance: collectively evaluated for impairment $ 70,915 109,853 38,690 — 219,459 Loans: Ending balance: total loans (1) $ 7,190,257 10,543,176 4,159,243 — 21,892,675 Ending balance: individually evaluated for impairment 159,582 109,904 39,858 — 309,344 Ending balance: collectively evaluated for impairment $ 7,030,675 10,433,272 4,119,385 — 21,583,331 As Of and For The Nine Months Ended September 30, 2014 (in thousands) Commercial Real Estate Commercial & Industrial Retail Unallocated Total Allowance for loan losses: Beginning balance $ 127,646 115,435 41,479 23,000 307,560 Allowance for loan losses of sold loans (281 ) (398 ) (340 ) (1,019 ) Charge-offs (41,139 ) (26,896 ) (19,082 ) — (87,117 ) Recoveries 8,318 9,562 6,434 — 24,314 Provision for loan losses 7,445 27,140 14,053 (23,000 ) 25,638 Ending balance $ 101,989 124,843 42,544 — 269,376 Ending balance: individually evaluated for impairment 22,107 15,863 1,195 — 39,165 Ending balance: collectively evaluated for impairment $ 79,882 108,980 41,349 — 230,211 Loans: Ending balance: total loans (2) $ 6,774,794 9,987,660 3,854,961 — 20,617,415 Ending balance: individually evaluated for impairment 317,011 172,860 47,669 — 537,540 Ending balance: collectively evaluated for impairment $ 6,457,783 9,814,800 3,807,292 — 20,079,875 (1) Total before net deferred fees and costs of $28.4 million . (2) Total before net deferred fees and costs of $28.8 million . The following table details the changes in the allowance for loan losses by loan segment for the three months ended September 30, 2015 and 2014 . Allowance for Loan Losses and Recorded Investment in Loans As Of and For The Three Months Ended September 30, 2015 (in thousands) Commercial Real Estate Commercial & Industrial Retail Unallocated Total Allowance for loan losses: Beginning balance $ 90,691 123,050 40,961 — 254,702 Charge-offs (1,722 ) (8,342 ) (4,779 ) — (14,843 ) Recoveries 4,019 2,203 1,863 — 8,085 Provision for loan losses (3,982 ) 5,510 1,428 — 2,956 Ending balance $ 89,006 122,421 39,473 — 250,900 Ending balance: individually evaluated for impairment 18,091 12,568 783 — 31,441 Ending balance: collectively evaluated for impairment $ 70,915 109,853 38,690 — 219,459 Loans: Ending balance: total loans (1) $ 7,190,257 10,543,176 4,159,243 — 21,892,675 Ending balance: individually evaluated for impairment 159,582 109,904 39,858 — 309,344 Ending balance: collectively evaluated for impairment $ 7,030,675 10,433,272 4,119,385 — 21,583,331 As Of and For The Three Months Ended September 30, 2014 (in thousands) Commercial Real Estate Commercial & Industrial Retail Unallocated Total Allowance for loan losses: Beginning balance $ 104,394 130,814 42,575 — 277,783 Charge-offs (5,233 ) (11,306 ) (6,222 ) — (22,761 ) Recoveries 3,099 5,257 2,155 — 10,511 Provision for loan losses (271 ) 78 4,036 — 3,843 Ending balance $ 101,989 $ 124,843 $ 42,544 $ — $ 269,376 Ending balance: individually evaluated for impairment 22,107 15,863 1,195 — 39,165 Ending balance: collectively evaluated for impairment $ 79,882 108,980 41,349 — 230,211 Loans: Ending balance: total loans (2) $ 6,774,794 9,987,660 3,854,961 — 20,617,415 Ending balance: individually evaluated for impairment 317,011 172,860 47,669 — 537,540 Ending balance: collectively evaluated for impairment $ 6,457,783 9,814,800 3,807,292 — 20,079,875 (1) Total before net deferred fees and costs of $28.4 million . (2) Total before net deferred fees and costs of $28.8 million . During the first quarter of 2014, Synovus designated $23.0 million of allowance for loan losses that was included in the unallocated component of the allowance for loan losses at December 31, 2013 to the allowance for loan losses allocated to the respective loan segments. The tables below summarize impaired loans (including accruing TDRs) as of September 30, 2015 and December 31, 2014 . Impaired Loans (including accruing TDRs) September 30, 2015 Nine Months Ended September 30, 2015 Three Months Ended September 30, 2015 (in thousands) Recorded Investment Unpaid Principal Balance Related Allowance Average Recorded Investment Interest Income Recognized Average Recorded Investment Interest Income Recognized With no related allowance recorded Investment properties $ 8,087 10,715 — 12,301 — 8,343 — 1-4 family properties 2,327 6,378 — 2,544 — 2,262 — Land acquisition 10,238 40,401 — 16,034 — 11,001 — Total commercial real estate 20,652 57,494 — 30,879 — 21,606 — Commercial, financial and agricultural 6,326 9,656 — 5,976 — 7,242 — Owner-occupied 6,941 8,949 — 16,983 — 15,087 — Total commercial and industrial 13,267 18,605 — 22,959 — 22,329 — Home equity lines 1,030 1,030 — 421 — 1,145 — Consumer mortgages 837 2,065 — 1,053 — 1,030 — Credit cards — — — — — — — Other retail loans — — — — — — — Total retail 1,867 3,095 — 1,474 — 2,175 — Total impaired loans with no related allowance recorded $ 35,786 79,194 — 55,312 — 46,110 — With allowance recorded Investment properties 56,882 56,882 9,893 77,466 1,722 66,726 475 1-4 family properties 56,191 56,978 5,622 63,889 1,230 57,956 423 Land acquisition 25,857 26,588 2,576 37,502 746 27,338 198 Total commercial real estate 138,930 140,448 18,091 178,857 3,698 152,020 1,096 Commercial, financial and agricultural 45,172 46,678 10,437 43,821 828 36,225 191 Owner-occupied 51,465 51,595 2,131 57,079 1,378 50,487 426 Total commercial and industrial 96,637 98,273 12,568 100,900 2,206 86,712 617 Home equity lines 9,809 9,809 155 7,880 226 9,573 104 Consumer mortgages 23,270 23,270 555 27,309 955 24,007 295 Credit cards — — — — — — — Other retail loans 4,912 4,912 72 5,213 248 5,064 81 Total retail 37,991 37,991 782 40,402 1,429 38,644 480 Total impaired loans with allowance recorded $ 273,558 276,712 31,441 320,159 7,333 277,376 2,193 Total impaired loans Investment properties $ 64,969 67,597 9,893 89,767 1,722 75,069 475 1-4 family properties 58,518 63,356 5,622 66,433 1,230 60,218 423 Land acquisition 36,095 66,989 2,576 53,536 746 38,339 198 Total commercial real estate 159,582 197,942 18,091 209,736 3,698 173,626 1,096 Commercial, financial and agricultural 51,498 56,334 10,437 49,797 828 43,467 191 Owner-occupied 58,406 60,544 2,131 74,062 1,378 65,574 426 Total commercial and industrial 109,904 116,878 12,568 123,859 2,206 109,041 617 Home equity lines 10,839 10,839 155 8,301 226 10,718 104 Consumer mortgages 24,107 25,335 555 28,362 955 25,037 295 Credit cards — — — — — — — Other retail loans 4,912 4,912 72 5,213 248 5,064 81 Total retail 39,858 41,086 782 41,876 1,429 40,819 480 Total impaired loans $ 309,344 355,906 31,441 375,471 7,333 323,486 2,193 Impaired Loans (including accruing TDRs) December 31, 2014 Year Ended December 31, 2014 (in thousands) Recorded Investment Unpaid Principal Balance Related Allowance Average Recorded Investment Interest Income Recognized With no related allowance recorded Investment properties $ 15,368 20,237 — 25,311 — 1-4 family properties 2,981 10,520 — 5,441 — Land acquisition 21,504 61,843 — 29,954 — Total commercial real estate 39,853 92,600 — 60,706 — Commercial, financial and agricultural 7,391 11,193 — 8,984 — Owner-occupied 17,017 19,612 — 19,548 — Total commercial and industrial 24,408 30,805 — 28,532 — Home equity lines — — — — — Consumer mortgages 995 2,065 — 1,352 — Credit cards — — — — — Other retail loans — — — — — Total retail 995 2,065 — 1,352 — Total impaired loans with no related allowance recorded $ 65,256 125,470 — 90,590 — With allowance recorded Investment properties $ 81,758 83,963 5,413 129,289 3,690 1-4 family properties 80,625 81,357 11,442 94,773 2,645 Land acquisition 49,300 49,483 4,900 89,195 1,689 Total commercial real estate 211,683 214,803 21,755 313,257 8,024 Commercial, financial and agricultural 59,035 59,041 7,597 91,221 2,392 Owner-occupied 62,583 62,601 2,854 78,950 2,610 Total commercial and industrial 121,618 121,642 10,451 170,171 5,002 Home equity lines 4,848 4,848 129 3,604 1,405 Consumer mortgages 33,450 33,450 1,040 39,427 115 Credit cards — — — — — Other retail loans 5,293 5,293 101 4,997 315 Total retail 43,591 43,591 1,270 48,028 1,835 Total impaired loans with allowance recorded $ 376,892 380,036 33,476 531,456 14,861 Total impaired loans Investment properties $ 97,126 104,200 5,413 154,600 3,690 1-4 family properties 83,606 91,877 11,442 100,214 2,645 Land acquisition 70,804 111,326 4,900 119,149 1,689 Total commercial real estate 251,536 307,403 21,755 373,963 8,024 Commercial, financial and agricultural 66,426 70,234 7,597 100,205 2,392 Owner-occupied 79,600 82,213 2,854 98,498 2,610 Total commercial and industrial 146,026 152,447 10,451 198,703 5,002 Home equity lines 4,848 4,848 129 3,604 1,405 Consumer mortgages 34,445 35,515 1,040 40,779 115 Credit cards — — — — — Other retail loans 5,293 5,293 101 4,997 315 Total retail 44,586 45,656 1,270 49,380 1,835 Total impaired loans $ 442,148 505,506 33,476 622,046 14,861 The average recorded investment in impaired loans was $666.8 million and $559.7 million for the nine and three months ended September 30, 2014 . Excluding accruing TDRs, there was no interest income recognized for the investment in impaired loans for the nine and three months ended September 30, 2014 . Interest income recognized for accruing TDRs was $11.7 million and $3.7 million for the nine and three months ended September 30, 2014 . At September 30, 2015 and December 31, 2014 , all impaired loans other than $240.4 million and $348.4 million , respectively, of accruing TDRs, were on non-accrual status. Concessions provided in a TDR are primarily in the form of providing a below market interest rate given the borrower's credit risk, a period of time generally less than one year with a reduction of required principal and/or interest payments (e.g., interest only for a period of time), or extension of the maturity of the loan generally for less than one year. Insignificant periods of reduction of principal and/or interest payments, or one-time deferrals of 3 months or less, are generally not considered to be financial concessions. The following tables represent, by concession type, the post-modification balance for loans modified or renewed during the nine and three months ended September 30, 2015 and 2014 that were reported as accruing or non-accruing TDRs. TDRs by Concession Type Nine Months Ended September 30, 2015 (in thousands, except contract data) Number of Contracts Principal Forgiveness Below Market Interest Rate Term Extensions and/or Other Concessions Total Investment properties 5 $ — 16,932 6,905 23,837 1-4 family properties 31 14,823 4,078 1,774 20,675 Land acquisition 8 — 604 1,187 1,791 Total commercial real estate 44 14,823 21,614 9,866 46,303 Commercial, financial and agricultural 71 — 3,094 5,455 8,549 Owner-occupied 7 — 1,739 1,314 3,053 Total commercial and industrial 78 — 4,833 6,769 11,602 Home equity lines 53 — 2,826 2,905 5,731 Consumer mortgages 12 — 510 786 1,296 Credit cards — — — — — Other retail loans 20 — 259 634 893 Total retail 85 — 3,595 4,325 7,920 Total TDRs 207 $ 14,823 30,042 20,960 65,825 (1 ) Three Months Ended September 30, 2015 (in thousands, except contract data) Number of Contracts Principal Forgiveness Below Market Interest Rate Term Extensions and/or Other Concessions Total Investment properties 1 $ — — 3,090 3,090 1-4 family properties 10 — 721 895 1,616 Land acquisition 2 — — 368 368 Total commercial real estate 13 — 721 4,353 5,074 Commercial, financial and agricultural 22 — 1,514 1,611 3,125 Owner-occupied 4 — — 898 898 Total commercial and industrial 26 — 1,514 2,509 4,023 Home equity lines 5 — 309 757 1,066 Consumer mortgages — — — — — Credit cards — — — — — Other retail loans 7 — 2 139 141 Total retail 12 — 311 896 1,207 Total TDRs 51 $ — 2,546 7,758 10,304 (2 ) (1) Net charge-offs of $4.0 million were recorded during the nine months ended September 30, 2015 upon restructuring of these loans. (2) No net charge-offs were recorded during the three months ended September 30, 2015 upon restructuring of these loans. TDRs by Concession Type Nine Months Ended September 30, 2014 (in thousands, except contract data) Number of Contracts Principal Forgiveness Below Market Interest Rate Term Extensions and/or Other Concessions Total Investment properties 14 $ — 8,423 5,598 14,021 1-4 family properties 36 — 2,390 3,859 6,249 Land acquisition 15 2,338 4,721 2,688 9,747 Total commercial real estate 65 2,338 15,534 12,145 30,017 Commercial, financial and agricultural 68 60 7,639 16,977 24,676 Owner-occupied 14 — 22,178 14,392 36,570 Total commercial and industrial 82 60 29,817 31,369 61,247 Home equity lines 11 — 1,163 451 1,614 Consumer mortgages 13 — 2,296 315 2,611 Credit cards — — — — — Other retail loans 17 — 543 385 928 Total retail 41 — 4,002 1,151 5,153 Total TDRs 188 $ 2,398 49,354 44,665 96,417 (1 ) Three Months Ended September 30, 2014 (in thousands, except contract data) Number of Contracts Principal Forgiveness Below Market Interest Rate Term Extensions and/or Other Concessions Total Investment properties 4 $ — 875 3,899 4,774 1-4 family properties 7 — 879 203 1,082 Land acquisition 3 2,338 204 646 3,188 Total commercial real estate 14 2,338 1,958 4,748 9,044 Commercial, financial and agricultural 28 60 3,098 5,280 8,438 Owner-occupied 2 — 2,703 130 2,833 Total commercial and industrial 30 60 5,801 5,410 11,271 Home equity lines 5 — 435 — 435 Consumer mortgages 5 — 543 212 755 Credit cards — — — — Other retail loans 7 — 101 150 251 Total retail 17 — 1,079 362 1,441 Total TDRs 61 $ 2,398 8,838 10,520 21,756 (2 ) (1) Net charge-offs of $163 thousand were recorded during the nine months ended September 30, 2014 upon restructuring of these loans. (2) Net charge-offs of $163 thousand were recorded during the three months ended September 30, 2014 upon restructuring of these loans. The following table presents TDRs that defaulted in the periods indicated and which were modified or renewed in a TDR within 12 months of the default date. Nine Months Ended September 30, 2015 Three Months Ended September 30, 2015 (in thousands, except contract data) Number of Contracts Recorded Investment Number of Contracts Recorded Investment Investment properties — $ — — $ — 1-4 family properties — — — — Land acquisition — — — — Total commercial real estate — — — — Commercial, financial and agricultural — — — — Owner-occupied 1 438 1 438 Total commercial and industrial 1 438 1 438 Home equity lines 2 74 1 40 Consumer mortgages — — — — Credit cards — — — — Other retail loans 1 81 — — Total retail 3 155 1 40 Total TDRs 4 $ 593 2 $ 478 Nine Months Ended September 30, 2014 Three Months Ended September 30, 2014 (in thousands, except contract data) Number of Contracts Recorded Investment Number of Contracts Recorded Investment Investment properties 1 186 — $ — 1-4 family properties 3 1,018 — — Land acquisition 1 428 — — Total commercial real estate 5 1,632 — — Commercial, financial and agricultural 4 1,559 2 181 Owner-occupied — — — — Total commercial and industrial 4 1,559 2 181 Home equity lines — — — — Consumer mortgages 3 206 2 136 Credit cards — — — — Other retail loans — — — — Total retail 3 206 2 136 Total TDRs 12 3,397 4 $ 317 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 changes from a general pool-level reserve to a 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 September 30, 2015 , the allowance for loan losses allocated to accruing TDRs totaling $240.4 million was $16.2 million compared to accruing TDRs of $348.4 million with an allocated allowance for loan losses of $21.0 million at December 31, 2014 . 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.

Other Real Estate

Other Real Estate	9 Months Ended
	Sep. 30, 2015
Other Real Estate, Foreclosed Assets, and Repossessed Assets [Abstract]
Other Real Estate	Note 7 - Other Real Estate The carrying value of ORE was $64.3 million and $85.5 million at September 30, 2015 and December 31, 2014 , respectively. During the nine months ended September 30, 2015 and 2014 , $23.9 million and $35.5 million , respectively, of loans and other loans held for sale were foreclosed and transferred to other real estate at fair value less costs to sell. During the nine months ended September 30, 2015 and 2014 , Synovus recognized foreclosed real estate expense, net, of $18.4 million and $18.8 million , respectively. These expenses included write-downs for declines in fair value of ORE subsequent to the date of foreclosure and net realized losses resulting from sales transactions totaling $14.9 million and $16.7 million for the nine months ended September 30, 2015 and 2014 , respectively. As of September 30, 2015 and December 31, 2014, there were $6.2 million and $12.8 million , respectively, of consumer mortgages secured by residential real estate properties for which formal foreclosure proceedings were in process.

Other Comprehensive Income (Los

Other Comprehensive Income (Loss)	9 Months Ended
	Sep. 30, 2015
Equity [Abstract]
Other Comprehensive Income (Loss)	Note 8 - Other Comprehensive Income (Loss) The following tables illustrate activity within the balances in accumulated other comprehensive income (loss) by component for the nine and three months ended September 30, 2015 and 2014 . Changes in Accumulated Other Comprehensive Income (Loss) by Component (Net of Income Taxes) (in thousands) Net unrealized gains (losses) on cash flow hedges Net unrealized gains (losses) on investment securities available for sale Post-retirement unfunded health benefit Total Balance as of December 31, 2014 $ (12,824 ) (713 ) 932 (12,605 ) Other comprehensive income before reclassifications — 7,941 143 8,084 Amounts reclassified from accumulated other comprehensive income (loss) 206 (1,667 ) (110 ) (1,571 ) Net current period other comprehensive income 206 6,274 33 6,513 Balance as of September 30, 2015 $ (12,618 ) 5,561 965 (6,092 ) Balance as of July 1, 2015 $ (12,687 ) (10,659 ) 1,023 (22,323 ) Other comprehensive income before reclassifications — 16,220 — 16,220 Amounts reclassified from accumulated other comprehensive income (loss) 69 — (58 ) 11 Net current period other comprehensive income 69 16,220 (58 ) 16,231 Balance as of September 30, 2015 $ (12,618 ) 5,561 965 (6,092 ) Changes in Accumulated Other Comprehensive Income (Loss) by Component (Net of Income Taxes) (in thousands) Net unrealized gains (losses) on cash flow hedges Net unrealized gains (losses) on investment securities available for sale Post-retirement unfunded health benefit Total Balance as of December 31, 2013 $ (13,099 ) (28,936 ) 777 (41,258 ) Other comprehensive income before reclassifications — 16,888 243 17,131 Amounts reclassified from accumulated other comprehensive income (loss) 206 (818 ) (88 ) (700 ) Net current period other comprehensive income 206 16,070 155 16,431 Balance at September 30, 2014 $ (12,893 ) (12,866 ) 932 (24,827 ) Balance as of July 1, 2014 $ (12,962 ) (1,686 ) 932 (13,716 ) Other comprehensive income (loss) before reclassifications — (11,180 ) — (11,180 ) Amounts reclassified from accumulated other comprehensive income (loss) 69 — — 69 Net current period other comprehensive income (loss) 69 (11,180 ) — (11,111 ) Balance as of September 30, 2014 $ (12,893 ) (12,866 ) 932 (24,827 ) In accordance with ASC 740-20-45-11(b), a deferred tax asset valuation allowance associated with unrealized gains and losses not recognized in income is charged directly to other comprehensive income (loss). During the years 2010 and 2011, Synovus recorded a deferred tax asset valuation allowance associated with unrealized gains and losses not recognized in income directly to other comprehensive income (loss) by applying the portfolio approach for allocation of the valuation allowance. Synovus has consistently applied the portfolio approach which treats derivative financial instruments, equity securities, and debt securities as a single portfolio. As of September 30, 2015 , the balance in net unrealized gains (losses) on cash flow hedges and net unrealized gains (losses) on 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 a 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. The following table illustrates activity within the reclassifications out of accumulated other comprehensive income (loss), for the nine and three months ended September 30, 2015 and 2014 . Reclassifications out of Accumulated Other Comprehensive Income (Loss) Details About Accumulated Other Comprehensive Income (Loss) Components Amount Reclassified from Accumulated Other Comprehensive Income (Loss) Affected Line Item in the Statement Where Net Income is Presented For the Nine Months Ended September 30, 2015 2014 Net unrealized gains (losses) on cash flow hedges: Amortization of deferred losses $ (336 ) (336 ) Interest expense 130 130 Income tax (expense) benefit $ (206 ) (206 ) Reclassifications, net of income taxes Net unrealized gains (losses) on investment securities available for sale: Realized gain on sale of securities $ 2,710 1,331 Investment securities gains, net (1,043 ) (513 ) Income tax (expense) benefit $ 1,667 818 Reclassifications, net of income taxes Post-retirement unfunded health benefit: Amortization of actuarial gains $ 178 144 Salaries and other personnel expense (68 ) (56 ) Income tax (expense) benefit $ 110 88 Reclassifications, net of income taxes Reclassifications out of Accumulated Other Comprehensive Income (Loss) Details About Accumulated Other Comprehensive Income (Loss) Components Amount Reclassified from Accumulated Other Comprehensive Income (Loss) Affected Line Item in the Statement Where Net Income is Presented For the Three Months Ended September 30, 2015 2014 Net unrealized gains (losses) on cash flow hedges: Amortization of deferred losses $ (112 ) (112 ) Interest expense 43 43 Income tax (expense) benefit $ (69 ) (69 ) Reclassifications, net of income taxes Post-retirement unfunded health benefit: Amortization of actuarial gains $ 94 — Salaries and other personnel expense (36 ) — Income tax (expense) benefit $ 58 — Reclassifications, net of income taxes

Fair Value Accounting

Fair Value Accounting	9 Months Ended
	Sep. 30, 2015
Fair Value Disclosures [Abstract]
Fair Value Accounting	Note 9 - Fair Value Accounting Synovus carries various assets and liabilities at fair value based on the fair value accounting guidance under ASC 820, Fair Value Measurements , and ASC 825, Financial Instruments . Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability (an “exit price”) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. Fair Value Hierarchy Synovus determines the fair value of its financial instruments based on the fair value hierarchy established under ASC 820-10, which requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. A financial instrument’s categorization within the valuation hierarchy is based upon the lowest level of input that is significant to the financial instrument's fair value measurement in its entirety. There are three levels of inputs that may be used to measure fair value. The three levels of inputs of the valuation hierarchy are defined below: Level 1 Quoted prices (unadjusted) in active markets for identical assets and liabilities for the instrument or security to be valued. Level 1 assets include marketable equity securities, U.S. Treasury securities, and mutual funds. Level 2 Observable inputs other than Level 1 quoted prices, such as quoted prices for similar assets and liabilities in active markets, quoted prices in markets that are not active or model-based valuation techniques for which all significant assumptions are derived principally from or corroborated by observable market data. Level 2 assets and liabilities include debt securities with quoted prices that are traded less frequently than exchange-traded instruments and derivative contracts whose value is determined by using a pricing model with inputs that are observable in the market or can be derived principally from or corroborated by observable market data. U.S. Government sponsored agency securities, mortgage-backed securities issued by U.S. Government sponsored enterprises and agencies, obligations of states and municipalities, collateralized mortgage obligations issued by U.S. Government sponsored enterprises, and mortgage loans held-for-sale are generally included in this category. Certain private equity investments that invest in publicly traded companies are also considered Level 2 assets. Level 3 Unobservable inputs that are supported by little, if any, market activity for the asset or liability. Level 3 assets and liabilities include financial instruments whose value is determined using pricing models, discounted cash flow models and similar techniques, and may also include the use of market prices of assets or liabilities that are not directly comparable to the subject asset or liability. These methods of valuation may result in a significant portion of the fair value being derived from unobservable assumptions that reflect Synovus' own estimates for assumptions that market participants would use in pricing the asset or liability. This category primarily includes collateral-dependent impaired loans, other real estate, certain equity investments, and private equity investments. See Note 16 "Fair Value Accounting" to the consolidated financial statements of Synovus' 2014 Form 10-K for a description of 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 table presents all financial instruments measured at fair value on a recurring basis as of September 30, 2015 and December 31, 2014, according to the valuation hierarchy included in ASC 820-10. For equity and debt securities, class was determined based on the nature and risks of the investments. Transfers betweens levels during the nine months ended September 30, 2015 and year ended December 31, 2014 were inconsequential. September 30, 2015 (in thousands) Level 1 Level 2 Level 3 Total Assets and Liabilities at Fair Value Assets Trading securities: Mortgage-backed securities issued by U.S. Government agencies — 3,141 — 3,141 Collateralized mortgage obligations issued by U.S. Government sponsored enterprises — 1,926 — 1,926 State and municipal securities — 757 — 757 Other investments — 20 — 20 Total trading securities $ — 5,844 — 5,844 Mortgage loans held for sale — 73,623 — 73,623 Investment securities available for sale: U.S. Treasury securities 43,673 — — 43,673 U.S. Government agency securities — 13,801 — 13,801 Securities issued by U.S. Government sponsored enterprises — 127,600 — 127,600 Mortgage-backed securities issued by U.S. Government agencies — 210,855 — 210,855 Mortgage-backed securities issued by U.S. Government sponsored enterprises — 2,548,093 — 2,548,093 Collateralized mortgage obligations issued by U.S. Government agencies or sponsored enterprises — 510,620 — 510,620 State and municipal securities — 4,546 — 4,546 Equity securities 8,471 — — 8,471 Other investments (1) 3,091 15,051 1,531 19,673 Total investment securities available for sale $ 55,235 3,430,566 1,531 3,487,332 Private equity investments — 867 26,850 27,717 Mutual funds held in rabbi trusts 10,233 — — 10,233 Derivative assets: Interest rate contracts — 32,710 — 32,710 Mortgage derivatives (2) — 1,845 — 1,845 Total derivative assets $ — 34,555 — 34,555 Liabilities Trading account liabilities — 3,002 — 3,002 Derivative liabilities: Interest rate contracts — 33,158 — 33,158 Mortgage derivatives (2) — 1,110 — 1,110 Visa derivative — — 1,415 1,415 Total derivative liabilities $ — 34,268 1,415 35,683 December 31, 2014 (in thousands) Level 1 Level 2 Level 3 Total Assets and Liabilities at Fair Value Assets Trading securities: Mortgage-backed securities issued by U.S. Government agencies — 145 — 145 Collateralized mortgage obligations issued by U.S. Government sponsored enterprises — 2,449 — 2,449 State and municipal securities — 1,976 — 1,976 All other mortgage-backed securities — 2,483 — 2,483 Other investments — 6,810 — 6,810 Total trading securities $ — 13,863 — 13,863 Mortgage loans held for sale — 63,328 — 63,328 Investment securities available for sale: U.S. Treasury securities 42,826 — — 42,826 U.S. Government agency securities — 27,324 — 27,324 Securities issued by U.S. Government sponsored enterprises — 82,042 — 82,042 Mortgage-backed securities issued by U.S. Government agencies — 179,816 — 179,816 Mortgage-backed securities issued by U.S. Government sponsored enterprises — 2,261,681 — 2,261,681 Collateralized mortgage obligations issued by U.S. Government agencies or sponsored enterprises — 417,076 — 417,076 State and municipal securities — 5,206 — 5,206 Equity securities 6,748 — — 6,748 Other investments (1) 2,035 15,007 1,645 18,687 Total investment securities available for sale $ 51,609 2,988,152 1,645 3,041,406 Private equity investments — 995 27,367 28,362 Mutual funds held in rabbi trusts 11,252 — — 11,252 Derivative assets: Interest rate contracts — 30,904 — 30,904 Mortgage derivatives (2) — 1,213 — 1,213 Total derivative assets $ — 32,117 — 32,117 Liabilities Trading account liabilities — 2,100 — 2,100 Salary stock units 1,206 — — 1,206 Derivative liabilities: Interest rate contracts — 31,398 — 31,398 Mortgage derivatives (2) — 753 — 753 Visa derivative — — 1,401 1,401 Total derivative liabilities $ — 32,151 1,401 33,552 (1) Based on an analysis of the nature and risks of these investments, Synovus has determined that presenting these investments as a single asset class is appropriate. (2) 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. Fair Value Option 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. Mortgage loans held for sale are initially measured at fair value with subsequent changes in fair value recognized in earnings. Changes in fair value were recorded as a component of mortgage banking income in the consolidated statements of income. An immaterial portion of these changes in fair value was attributable to changes in instrument-specific credit risk. Changes in Fair Value Included in Net Income For the Nine Months Ended September 30, For the Three Months Ended September 30, (in thousands) 2015 2014 2015 2014 Mortgage loans held for sale $ 450 969 1,012 (813 ) Mortgage Loans Held for Sale (in thousands) As of September 30, 2015 As of December 31, 2014 Fair value 73,623 63,328 Unpaid principal balance 71,333 61,488 Fair value less aggregate unpaid principal balance $ 2,290 1,840 Changes in Level 3 Fair Value Measurements As noted above, Synovus uses significant unobservable inputs (Level 3) in determining the fair value of assets and liabilities classified as Level 3 in the fair value hierarchy. The table below includes a roll-forward of the amounts on the consolidated balance sheet for the nine and three months ended September 30, 2015 and 2014 (including the change in fair value), for financial instruments of a material nature that are classified by Synovus within Level 3 of the fair value hierarchy and are measured at fair value on a recurring basis. Transfers between fair value levels are recognized at the end of the reporting period in which the associated changes in inputs occur. During the nine and three months ended September 30, 2015 and 2014 , Synovus did not have any transfers between levels in the fair value hierarchy. Nine Months Ended September 30, 2015 2014 (in thousands) Investment Securities Available for Sale Private Equity Investments Visa Derivative Investment Securities Available for Sale Private Equity Investments Other Derivative Contracts, Net Beginning balance, January 1, $ 1,645 27,367 (1,401 ) 2,350 27,745 (2,706 ) Total gains (losses) realized/unrealized: Included in earnings — (517 ) (1,092 ) (88 ) (513 ) (2,731 ) Unrealized gains (losses) included in other comprehensive income (114 ) — — 63 — — Purchases — — — — — — Sales — — — — — — Issuances — — — — — — Settlements — — 1,078 (540 ) — 1,416 Amortization of discount/premium — — — — — — Transfers in and/or out of Level 3 — — — — — — Ending balance, September 30, $ 1,531 26,850 (1,415 ) 1,785 27,232 (4,021 ) Total net gains (losses) for the period included in earnings attributable to the change in unrealized gains (losses) relating to assets still held at September 30, $ — (517 ) (1,092 ) (88 ) (513 ) (2,731 ) Three Months Ended September 30, 2015 2014 (in thousands) Investment Securities Available for Sale Private Equity Investments Visa Derivative Investment Securities Available for Sale Private Equity Investments Visa Derivative Beginning balance, July 1, $ 1,700 26,959 (1,415 ) 1,866 27,376 (2,438 ) Total gains (losses) realized/unrealized: Included in earnings — (109 ) (363 ) — (144 ) (1,979 ) Unrealized gains (losses) included in other comprehensive income (169 ) — — (81 ) — — Purchases — — — — — — Sales — — — — — — Issuances — — — — — — Settlements — — 363 — — 396 Amortization of discount/premium — — — — — — Transfers in and/or out of Level 3 — — — — — — Ending balance, September 30, $ 1,531 26,850 (1,415 ) 1,785 27,232 (4,021 ) Total net gains (losses) for the period included in earnings attributable to the change in unrealized gains (losses) relating to assets still held at September 30, $ — (109 ) (363 ) — (144 ) (1,979 ) Assets Measured at Fair Value on a Non-recurring Basis Certain assets are recorded at fair value on a non-recurring basis. These non-recurring fair value adjustments typically are a result of the application of lower of cost or fair value accounting or a write-down occurring during the period. 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. September 30, 2015 December 31, 2014 (in thousands) Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Impaired loans * — — 12,430 12,430 — — 28,588 28,588 Other loans held for sale — — — — — — 3,411 3,411 Other real estate — — 23,457 23,457 — — 32,046 32,046 Other assets held for sale $ — — 1,844 1,844 $ — — 3,718 3,718 The following table presents fair value adjustments recognized in earnings for the nine and three months ended September 30, 2015 and 2014 for the assets measured at fair value on a non-recurring basis. Nine Months Ended September 30, Three Months Ended September 30, (in thousands) 2015 2014 2015 2014 Impaired loans * 3,549 20,661 1,789 9,380 Other loans held for sale — 285 — 285 Other real estate 7,405 7,343 2,645 4,114 Other assets held for sale $ 1,043 7,608 $ 1,043 100 * Impaired loans that are collateral-dependent. Quantitative Information about Level 3 Fair Value Measurements The tables below provide an overview of the valuation techniques and significant unobservable inputs used in those techniques to measure financial instruments that are classified within Level 3 of the valuation hierarchy. The range of sensitivities that management utilized in its fair value calculations is deemed acceptable in the industry with respect to the identified financial instruments. The tables below present both the total balance as of the dates indicated for assets measured at fair value on a recurring basis and the assets measured at fair value on a non-recurring basis for which there was a fair value adjustment during the period. September 30, 2015 (dollars in thousands) Level 3 Fair Value Valuation Technique Significant Unobservable Input Range (Weighted Average) (1) Assets measured at fair value on a recurring basis Investment Securities Available for Sale: Other Investments: Trust preferred securities $ 1,531 Discounted cash flow analysis Credit spread embedded in discount rate 549-649 bps (599 bps) Discount for lack of marketability (2) 0%-10% (0%) Private equity investments 26,850 Individual analysis of each investee company Multiple factors, including but not limited to, current operations, financial condition, cash flows, evaluation of business management and financial plans, and recently executed financing transactions related to the investee companies N/A Visa derivative liability 1,415 Internal valuation Estimated future cumulative deposits to the litigation escrow for settlement of the Covered Litigation, and estimated future monthly fees payable to the derivative counterparty N/A September 30, 2015 (dollars in thousands) Level 3 Fair Value Valuation Technique Significant Unobservable Input Range (Weighted Average) (1) Assets measured at fair value on a non-recurring basis Collateral dependent impaired loans $ 12,430 Third-party appraised value of collateral less estimated selling costs Discount to appraised value (3) Estimated selling costs 0% - 100% (44%) 0% - 10% (7%) Other real estate 23,457 Third-party appraised value of collateral less estimated selling costs Discount to appraised value (3) Estimated selling costs 0% - 25% (8%) 0% - 10% (7%) Other assets held for sale 1,844 Third-party appraised value of collateral less estimated selling costs or BOV Discount to appraised value (3) Estimated selling costs 0%-100% (55%) 0%-10% (7%) (1) The range represents management's best estimate of the high and low of the value that would be assigned to a particular input. For assets measured at fair value on a non-recurring basis, the weighted average is the measure of central tendencies; it is not the value that management is using for the asset or liability. (2) Represents management's estimate of discount that market participants would require based on the instrument's lack of liquidity. (3) Synovus also makes adjustments to the values of the assets listed above for various reasons, including age of the appraisal, information known by management about the property, such as occupancy rates, changes to the physical conditions of the property, and other factors. December 31, 2014 (dollars in thousands) Level 3 Fair Value Valuation Technique Significant Unobservable Input Range (Weighted Average) (1) Assets measured at fair value on a recurring basis Investment Securities Available for Sale: Other Investments: Trust preferred securities $ 1,645 Discounted cash flow analysis Credit spread embedded in discount rate 600-675 bps (639 bps) Discount for lack of marketability (2) 0%-10% (0%) Private equity investments 27,367 Individual analysis of each investee company Multiple factors, including but not limited to, current operations, financial condition, cash flows, evaluation of business management and financial plans, and recently executed financing transactions related to the investee companies (2) N/A Visa derivative liability 1,401 Internal valuation Estimated future cumulative deposits to the litigation escrow for settlement of the Covered Litigation, and estimated future monthly fees payable to the derivative counterparty N/A December 31, 2014 (dollars in thousands) Level 3 Fair Value Valuation Technique Significant Unobservable Input Range (Weighted Average) (1) Assets measured at fair value on a non-recurring basis Collateral dependent impaired loans $ 28,588 Third-party appraised value of collateral less estimated selling costs Discount to appraised value (2) Estimated selling costs 0%-100% (46%) 0%-10% (7%) Other loans held for sale 3,411 Third-party appraised value of collateral less estimated selling costs Discount to appraised value (2) Estimated selling costs 0%-11% (7%) 0%-10% (7%) Other real estate 32,046 Third-party appraised value of collateral less estimated selling costs Discount to appraised value (2) Estimated selling costs 0%-61% (16%) 0%-10% (7%) Other assets held for sale 3,718 Third-party appraised value of collateral less estimated selling costs or BOV Discount to appraised value (2) Estimated selling costs 0%-100% (49%) 0%-10% (7%) (1) The range represents management's best estimate of the high and low end of the value that would be assigned to a particular input. For assets measured at fair value on a non-recurring basis, the weighted average is the measure of central tendencies; it is not the value that management is using for the asset or liability. (2) Represents management's estimate of discount that market participants would require based on the instrument's lack of liquidity. (3) Synovus also makes adjustments to the values of the assets listed above for various reasons, including age of the appraisal, information known by management about the property, such as occupancy rates, changes to the physical conditions of the property, pending sales, and other factors. Sensitivity Analysis of Level 3 Unobservable Inputs Measured on a Recurring Basis Included in the fair value estimates of financial instruments carried at fair value on the consolidated balance sheet are those estimated in full or in part using valuation techniques based on assumptions that are not supported by observable market prices, rates, or other inputs. Unobservable inputs are assessed carefully, considering the current economic environment and market conditions. However, by their very nature, unobservable inputs imply a degree of uncertainty in their determination, because they are supported by little, if any, market activity for the related asset or liability. Investment Securities Available for Sale The significant unobservable inputs used in the fair value measurement of the corporate obligations in Level 3 assets are the credit spread embedded in the discount rate and the discount for lack of liquidity. Generally, a change in one or more assumptions, and the degree or sensitivity of the change used, can have a significant impact on fair value. With regard to the trust preferred securities in Level 3 assets, raising the credit spread, and raising the discount for lack of liquidity assumptions will result in a lower fair value measurement. Private Equity Investments In the absence of quoted market prices, inherent lack of liquidity, and the long-term nature of private equity investments, significant judgment is required to value these investments. The significant unobservable inputs used in the fair value measurement of private equity investments include current operations, financial condition, and cash flows, comparables and private sales, when available, and recently executed financing transactions related to investee companies. Significant increases or decreases in any of these inputs in isolation would result in a significantly lower or higher fair value measurement. Visa Derivative Liability The fair value of the Visa derivative contract is determined based on management's estimate of the timing and amount of the Covered Litigation settlement, and the resulting payments due to the counterparty under the terms of the contract. Significant changes in any of these inputs in isolation could result in a significantly higher (lower) valuation of the Visa derivative liability. Also, additional funding into the escrow generally results in a proportional increase in our derivative liability. Fair Value of Financial Instruments The following table presents the carrying and fair values of financial instruments at September 30, 2015 and December 31, 2014 . The fair value represents management’s best estimates based on a range of methodologies and assumptions. For financial instruments that are not recorded at fair value on the balance sheet, such as loans, interest bearing deposits (including brokered deposits), and long-term debt, the fair value amounts should not be taken as an estimate of the amount that would be realized if all such financial instruments were to be settled immediately. The carrying and estimated fair values of financial instruments, as well as the level within the fair value hierarchy, as of September 30, 2015 and December 31, 2014 are as follows: September 30, 2015 (in thousands) Carrying Value Fair Value Level 1 Level 2 Level 3 Financial assets Cash and cash equivalents $ 329,396 329,396 329,396 — — Interest bearing funds with Federal Reserve Bank 837,641 837,641 837,641 — — Interest earning deposits with banks 21,170 21,170 21,170 — — Federal funds sold and securities purchased under resale agreements 69,732 69,732 69,732 — — Trading account assets 5,844 5,844 — 5,844 — Mortgage loans held for sale 73,623 73,623 — 73,623 — Investment securities available for sale 3,487,332 3,487,332 55,235 3,430,566 1,531 Private equity investments 27,717 27,717 — 867 26,850 Mutual funds held in rabbi trusts 10,233 10,233 10,233 — — Loans, net of deferred fees and costs 21,864,309 21,677,842 — — 21,677,842 Derivative assets 34,555 34,555 — 34,555 — Financial liabilities Trading account liabilities 3,002 3,002 — 3,002 — Non-interest bearing deposits 6,570,227 6,570,227 — 6,570,227 — Interest bearing deposits 16,207,186 16,218,720 — 16,218,720 — Federal funds purchased and securities sold under repurchase agreements 135,475 135,475 135,475 — — Long-term debt 2,038,719 2,098,864 — 2,098,864 — Derivative liabilities $ 35,683 35,683 — 34,268 1,415 December 31, 2014 (in thousands) Carrying Value Fair Value Level 1 Level 2 Level 3 Financial assets Cash and cash equivalents $ 485,489 485,489 485,489 — — Interest bearing funds with Federal Reserve Bank 721,362 721,362 721,362 — — Interest earning deposits with banks 11,810 11,810 11,810 — — Federal funds sold and securities purchased under resale agreements 73,111 73,111 73,111 — — Trading account assets 13,863 13,863 — 13,863 — Mortgage loans held for sale 63,328 63,328 — 63,328 — Other loans held for sale 3,606 3,606 — — 3,606 Investment securities available for sale 3,041,406 3,041,406 51,609 2,988,152 1,645 Private equity investments 28,362 28,362 — 995 27,367 Mutual funds held in rabbi trusts 11,252 11,252 11,252 — — Loans, net of deferred fees and costs 21,097,699 20,872,939 — — 20,872,939 Derivative assets 32,117 32,117 — 32,117 — Financial liabilities Trading account liabilities 2,100 2,100 — 2,100 — Non-interest bearing deposits 6,228,472 6,228,472 — 6,228,472 — Interest bearing deposits 15,303,228 15,299,372 — 15,299,372 — Federal funds purchased and securities sold under repurchase agreements 126,916 126,916 126,916 — — Salary stock units 1,206 1,206 1,206 — — Long-term debt 2,140,319 2,191,279 — 2,191,279 — Derivative liabilities $ 33,553 33,553 — 32,151 1,401

Derivative Instruments

Derivative Instruments	9 Months Ended
	Sep. 30, 2015
Summary of Derivative Instruments [Abstract]
Derivative Instruments	Note 10 - Derivative Instruments As part of its overall interest rate risk management activities, Synovus utilizes derivative instruments to manage its exposure to various types of interest rate risk. These derivative instruments generally 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. These interest rate swap transactions generally involve the exchange of fixed and floating interest rate payment obligations without the exchange of underlying principal amounts. Swaps may be designated as either cash flow hedges or fair value hedges, as discussed below. As of September 30, 2015 and December 31, 2014, Synovus had no outstanding interest rate swap contracts utilized to manage interest rate risk. 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 and other market indicators. 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. Cash Flow Hedges Synovus designates hedges of floating rate loans as cash flow hedges. These swaps hedge against the variability of cash flows from specified pools of floating rate prime based loans. Synovus calculates effectiveness of the hedging relationship quarterly using regression analysis. The effective portion of the gain or loss on the derivative instrument is reported as a component of other comprehensive income and reclassified into earnings in the same period or periods during which the hedged transactions affect earnings. Ineffectiveness from cash flow hedges is recognized in the consolidated statements of income as a component of other non-interest income. As of September 30, 2015 , there were no cash flow hedges outstanding, and therefore, no cumulative ineffectiveness. Synovus expects to reclassify from accumulated other comprehensive income (loss) $447 thousand of interest expense during the next twelve months as amortization of deferred losses is recorded. Synovus did not terminate any cash flow hedges during 2015 or 2014 . The remaining unamortized deferred net loss balance of all previously terminated cash flow hedges at September 30, 2015 and December 31, 2014 was $(782) thousand and $(1.1) million , respectively. Fair Value Hedges Synovus designates hedges of fixed rate liabilities as fair value hedges. These swaps hedge against the change in fair value of various fixed rate liabilities due to changes in the benchmark interest rate, LIBOR. Synovus calculates effectiveness of the fair value hedges quarterly using regression analysis. Ineffectiveness from fair value hedges is recognized in the consolidated statements of income as a component of other non-interest income. As of September 30, 2015 , there were no fair value hedges outstanding, and therefore, no cumulative ineffectiveness. Synovus did not terminate any fair value hedges during 2015 or 2014 . The remaining unamortized deferred gain balance on all previously terminated fair value hedges at September 30, 2015 and December 31, 2014 was $5.3 million and $7.6 million , respectively. Synovus expects to reclassify from hedge-related basis adjustment, a component of long-term debt, $3.1 million of the deferred gain balance on previously terminated fair value hedges as a reduction to interest expense during the next twelve months as amortization of deferred gains is recorded. Customer Related Derivative Positions Synovus enters into interest rate swap agreements to facilitate the risk management strategies of a small number of commercial banking customers. Synovus mitigates this risk by entering into equal and offsetting interest rate swap agreements with highly rated third-party financial institutions. The interest rate swap agreements are free-standing derivatives and are recorded at fair value on Synovus' consolidated balance sheet. Fair value changes are recorded in non-interest income in Synovus' consolidated statements of income. As of September 30, 2015 , the notional amount of customer related interest rate derivative financial instruments, including both the customer position and the offsetting position, was $1.19 billion , an increase of $103.7 million compared to December 31, 2014 . Visa Derivative In conjunction with the sale of Class B shares of common stock issued by Visa to Synovus as a Visa USA member, Synovus entered into a derivative contract with the purchaser, which provides for settlements between the parties based upon a change in the ratio for conversion of Visa Class B shares to Visa Class A shares. The conversion ratio changes when Visa deposits funds to a litigation escrow established by Visa to pay settlements for certain litigation, for which Visa is indemnified by Visa USA members. The litigation escrow is funded by proceeds from Visa’s conversion of Class B shares. The fair value of the derivative contract was $1.4 million at both September 30, 2015 and December 31, 2014. The fair value of the derivative contract is determined based on management's estimate of the timing and amount of the Covered Litigation settlement, and the resulting payments due to the counterparty under the terms of the contract. Mortgage Derivatives Synovus originates first lien residential mortgage loans for sale into the secondary market. Mortgage loans are sold by Synovus for conversion to securities and the servicing of these loans is generally sold to a third-party servicing aggregator, or Synovus sells the mortgage loans as whole loans to investors either individually or in bulk on a servicing released basis. Synovus enters into interest rate lock commitments for residential mortgage loans which commits it to lend funds to a potential borrower at a specific interest rate and within a specified period of time. Interest rate lock commitments that relate to the origination of mortgage loans that, if originated, will be held for sale, are considered derivative financial instruments under applicable accounting guidance. Outstanding interest rate lock commitments expose Synovus to the risk that the price of the mortgage loans underlying the commitments may decline due to increases in mortgage interest rates from inception of the rate lock to the funding of the loan. At September 30, 2015 and December 31, 2014 , Synovus had commitments to fund at a locked interest rate, primarily fixed-rate mortgage loans to customers in the amount of $93.2 million and $73.4 million , respectively. The fair value of these commitments resulted in a gain of $632 thousand and $ 531 thousand for the nine months ended September 30, 2015 and 2014 , respectively, which was recorded as a component of mortgage banking income in the consolidated statements of income. At September 30, 2015 and December 31, 2014 , outstanding commitments to sell primarily fixed-rate mortgage loans amounted to $111.5 million and $113.0 million , respectively. Such commitments are entered into to reduce the exposure to market risk arising from potential changes in interest rates, which could affect the fair value of mortgage loans held for sale and outstanding rate lock commitments, which guarantee a certain interest rate if the loan is ultimately funded or granted by Synovus as a mortgage loan held for sale. The commitments to sell mortgage loans are at fixed prices and are scheduled to settle at specified dates that generally do not exceed 90 days. The fair value of outstanding commitments to sell mortgage loans resulted in a loss of $(356) thousand and $ (1.2) million for the nine months ended September 30, 2015 and 2014 , respectively, which was recorded as a component of mortgage banking income in the consolidated statements of income. Collateral Contingencies Certain derivative instruments contain provisions that require Synovus to maintain an investment grade credit rating from each of the major credit rating agencies. When Synovus’ credit rating falls below investment grade, these provisions allow the counterparties of the derivative instrument to demand immediate and ongoing full collateralization on derivative instruments in net liability positions and, for certain counterparties, request immediate termination. As Synovus’ current rating is below investment grade, Synovus is required to post collateral, as required by each agreement, against these positions. Additionally, as of June 10, 2013, the CCC became mandatory for certain trades as required under the Dodd-Frank Act. These derivative transactions also carry collateral requirements, both at the inception of the trade, and as the value of each derivative position changes. As trades are migrated to the CCC, dealer counterparty exposure will be reduced, and higher notional amounts of Synovus' derivative instruments will be housed at the CCC, a highly regulated and well-capitalized entity. As of September 30, 2015 , collateral totaling $68.4 million , consisting of Federal funds sold, was pledged to the derivative counterparties, including $12.6 million with the CCC, to comply with collateral requirements. The impact of derivative instruments on the consolidated balance sheets at September 30, 2015 and December 31, 2014 is presented below. Fair Value of Derivative Assets Fair Value of Derivative Liabilities (in thousands) Location on Consolidated Balance Sheet September 30, 2015 December 31, 2014 Location on Consolidated Balance Sheet September 30, 2015 December 31, 2014 Derivatives not designated as hedging instruments: Interest rate contracts Other assets 32,710 30,904 Other liabilities 33,158 31,398 Mortgage derivatives Other assets 1,845 1,213 Other liabilities 1,110 753 Visa derivative — — Other liabilities 1,415 1,401 Total derivatives not designated as hedging instruments $ 34,555 32,117 $ 35,683 33,552 The pre-tax effect of fair value hedges on the consolidated statements of income for the nine and three months ended September 30, 2015 and 2014 is presented below. Location of Gain (Loss) Recognized in Income Gain (Loss) Recognized in Income (in thousands) Nine Months Ended September 30, Derivatives not designated as hedging instruments 2015 2014 Interest rate contracts (1) Other non-interest income 10 449 Mortgage derivatives (2) Mortgage banking income 276 (704 ) Total $ 286 (255 ) Location of Gain (Loss) Recognized in Income Gain (Loss) Recognized in Income (in thousands) Three Months Ended September 30, Derivatives not designated as hedging instruments 2015 2014 Interest rate contracts (1) Other non-interest income 170 65 Mortgage derivatives (2) Mortgage banking income (1,955 ) 51 Total $ (1,785 ) 116 (1) Gain (loss) represents net fair value adjustments (including credit related adjustments) for customer swaps and offsetting positions. (2) Gain (loss) represents net fair value adjustments recorded for interest rate lock commitments and commitments to sell mortgage loans to third-party investors. During the nine months ended September 30, 2015 and 2014 , Synovus reclassified $2.3 million from hedge-related basis adjustment, a component of long-term debt, as a reduction to interest expense. These deferred gains relate to hedging relationships that have been previously terminated and are reclassified into earnings over the remaining life of the hedged items.

Net Income Per Common Share

Net Income Per Common Share	9 Months Ended
	Sep. 30, 2015
Earnings Per Share [Abstract]
Net Income Per Common Share	Note 11 - Net Income Per Common Share The following table displays a reconciliation of the information used in calculating basic and diluted earnings per common share for the nine and three months ended September 30, 2015 and 2014 . Nine Months Ended September 30, Three Months Ended September 30, (in thousands, except per share data) 2015 2014 2015 2014 Basic Net Income Per Common Share: Net income available to common shareholders $ 160,006 134,399 $ 55,369 44,229 Weighted average common shares outstanding 133,120 138,989 131,516 139,043 Net income per common share, basic $ 1.20 0.97 0.42 0.32 Diluted Net Income Per Common Share: Net income available to common shareholders $ 160,006 134,399 55,369 44,229 Weighted average common shares outstanding 133,120 138,989 131,516 139,043 Potentially dilutive shares from assumed exercise of securities or other contracts to purchase common stock 756 611 781 683 Weighted average diluted common shares 133,876 139,600 132,297 139,726 Net income per common share, diluted $ 1.20 0.96 0.42 0.32 Basic net income per common share is computed by dividing net income by the average common shares outstanding for the period. Diluted net income per common share reflects the dilution that could occur if securities or other contracts to issue common stock were exercised or converted. The dilutive effect of outstanding options and restricted share units is reflected in diluted net income per common share, unless the impact is anti-dilutive, by application of the treasury stock method. As of September 30, 2015 and 2014 , there were 2.7 million and 3.2 million , respectively, potentially dilutive shares related to common stock options and Warrants to purchase shares of common stock that were outstanding during 2015 and 2014 , 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	9 Months Ended
	Sep. 30, 2015
Share-based Compensation [Abstract]
Share-based Compensation	Note 12 - Share-based Compensation General Description of Share-based Plans Synovus has a long-term incentive plan under which the Compensation Committee of the Board of Directors has the authority to grant share-based awards to Synovus employees. At September 30, 2015 , Synovus had a total of 7.1 million shares of its authorized but unissued common stock reserved for future grants under the 2013 Omnibus Plan. The 2013 Omnibus Plan authorizes 8.6 million common share equivalents available for grant, where grants of options count as one share equivalent and grants of full value awards (e.g., restricted share units, market restricted share units, and performance share units) count as two share equivalents. Any restricted share units that are forfeited and options that expire unexercised will again become available for issuance under the Plan. The Plan permits grants of share-based compensation including stock options, restricted share units, market restricted share units, and performance share units. The grants generally include vesting periods ranging from three to five years and contractual terms of ten years. Stock options are granted at exercise prices which equal the fair value of a share of common stock on the grant-date. Synovus has historically issued new shares to satisfy share option exercises and share unit conversions. Dividend equivalents are paid on outstanding restricted share units, market restricted share units, and performance share units in the form of additional restricted share units that vest over the same vesting period or the vesting period left on the original restricted share unit grant. Share-based Compensation Expense Share-based compensation costs associated with employee grants are recorded as a component of salaries and other personnel expense in the consolidated statements of income. Share-based compensation costs associated with grants made to non-employee directors of Synovus are recorded as a component of other operating expenses. Total share-based compensation expense was $9.5 million and $3.2 million for the nine and three months ended September 30, 2015 , respectively, and $7.5 million and $2.8 million for the nine and three months ended September 30, 2014 , respectively. Stock Options No stock option grants were made during the nine months ended September 30, 2015 . At September 30, 2015 , there were 1.8 million outstanding options to purchase shares of common stock with a weighted average exercise price of $37.36 . Restricted Share Units, Performance Share Units, and Market Restricted Share Units During the nine months ended September 30, 2015 , Synovus awarded 320 thousand restricted share units that have a service-based vesting period of three years and awarded 82 thousand performance share units that vest upon service and performance conditions. Synovus also granted 82 thousand market restricted share units during the nine months ended September 30, 2015 . The weighted average grant-date fair value of the awarded restricted share units, performance share units and market restricted share units was $28.30 per share. Market restricted share units and performance share units are granted at target and are compared annually to required market and performance metrics. The performance share units vest upon meeting certain service and performance conditions. Return on average assets (ROAA) performance is evaluated each year over a three-year performance period, with share distribution determined at the end of the three years. The number of performance share units that will ultimately vest ranges from 0% to 150% of target based on Synovus' three-year weighted average ROAA (as defined). The market restricted share units have a three-year service-based vesting component as well as a total shareholder return multiplier. The number of market restricted share units that will ultimately vest ranges from 75% to 125% of target based on Synovus' total shareholder return (TSR). At September 30, 2015 , including dividend equivalents granted, there were 1.1 million restricted share units, performance share units and market restricted share units outstanding with a weighted average grant-date fair value of $24.92 .

Legal Proceedings

Legal Proceedings	9 Months Ended
	Sep. 30, 2015
Legal Proceedings Disclosure [Abstract]
Legal Proceedings	Note 13 - Legal Proceedings Synovus and its subsidiaries are subject to various legal proceedings, claims and disputes that arise in the ordinary course of its business. Additionally, in the ordinary course of business, Synovus and its subsidiaries are subject to regulatory examinations, information gathering requests, 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 mortgage loan and other loan put-back claims, claims and counterclaims asserted by individual borrowers related to their loans and allegations of violations of state and federal laws and regulations relating to banking practices, including putative class action matters. In addition to actual damages if Synovus does not prevail in such asserted legal actions, credit-related litigation could result in additional write-downs or charge-offs of assets, which could adversely affect Synovus' results of operations during the period in which the write-down or charge-off were to occur. Synovus also from time to time faces disputes with customers and other counterparties, and in many cases, those disputes can pose both financial and reputational risk to Synovus. 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 accrual. 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 September 30, 2015 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, including those legal matters described below, 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 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 pending and threatened litigation, including, without limitation, the matters described below, is from zero to $15 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 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, reputational risk and distraction of defending such legal matters. Synovus also maintains insurance coverage, which may (or may not) be available to cover legal fees, or potential losses that might be incurred in connection with the legal matters described below. 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. TelexFree Litigation On October 22, 2014, several pending lawsuits were consolidated into a multi-district putative class action case captioned In re: TelexFree Securities Litigation, MDL Number 4:14-md2566-TSH, United States District Court District of Massachusetts. Synovus Financial Corp. and Synovus Bank were named as defendants with numerous other defendants in the purported class action lawsuit. An Amended Complaint was filed on March 31, 2015 which consolidated and amended the claims previously asserted. The claims against Synovus Financial Corp. were dismissed by Plaintiffs on April 10, 2015 so now, as to Synovus-related entities, only claims against Synovus Bank remain pending. TelexFree was a merchant customer of Base Commerce, LLC “Base Commerce”, an independent sales organization/member service provider sponsored by Synovus Bank. The purported class action lawsuit generally alleges that TelexFree engaged in an improper multi-tier marketing scheme involving voice-over Internet protocol telephone services and that the various defendants, including Synovus Bank, provided financial services to TelexFree that allowed TelexFree to conduct its business operations. Synovus Bank filed a motion to dismiss the lawsuit on June 1, 2015. Synovus Bank believes it has substantial defenses related to these purported claims and intends to vigorously defend the claims asserted. Synovus currently cannot reasonably estimate losses attributable to this matter.

Significant Accounting Polici22

Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2015
Significant Accounting Policies [Abstract]
Cash and Cash Equivalents	Cash and cash equivalents consist of cash and due from banks. At September 30, 2015 , no amount of the due from banks balance was restricted as to withdrawal.
Short-term Investment	Short-term investments consist of interest bearing funds with the Federal Reserve Bank, interest earning deposits with banks, and Federal funds sold and securities purchased under resale agreements.
Recently Adopted Accounting Standards Updates	During 2014, the FASB issued the following ASUs, all of which became effective January 1, 2015: • ASU 2014-01, Investments-Equity Method and Joint Ventures (Topic 323), Accounting for Investments in Qualified Affordable Housing Projects In January 2014, the FASB issued amended guidance which permits Synovus to make an accounting policy election to account for its investments in qualified affordable housing projects using a proportional amortization method, if certain conditions are met, and to present the amortization as a component of income tax expense. The amended guidance would be applied retrospectively to all periods presented and is effective for fiscal years, and interim periods within those years, beginning after December 15, 2014. Regardless of the policy election, the amended guidance, where disclosed, enables the users of the financial statements to understand the nature of investments in qualified affordable housing projects and the effect of the measurement of the investments in qualified affordable housing projects and the related tax credits on Synovus’ financial position and results of operations. Synovus adopted the amended guidance on January 1, 2015, and did not make an accounting policy election to apply the proportional amortization method for its investments in qualified affordable housing projects because the impact to the consolidated financial statements was insignificant. Therefore, the adoption did not have an impact on Synovus’ consolidated financial statements. At September 30, 2015 , the aggregate carrying value of Synovus' investments in LIHTC partnerships was $19.6 million . See Note 18 "Variable Interest Entities" to the consolidated financial statements of Synovus' 2014 Form 10-K for additional information regarding these investments. Additionally, adoption of the following standards effective January 1, 2015 did not have a significant impact on Synovus’ consolidated financial statements. • ASU 2014-14, Classification of Certain Government-Guaranteed Mortgage Loans upon Foreclosure • ASU 2014-12, Accounting for Share-Based Payments when the Terms of an Award Provide that a Performance Target Could be Achieved after the Requisite Service Period • ASU 2014-11, Repurchase-to-Maturity Transactions, Repurchase Financings, and Disclosures • ASU 2014-08, Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity • ASU 2014-04, Receivables -Troubled Debt Restructurings by Creditors (Subtopic 310-40), Reclassification of Residential Real Estate Collateralized Consumer Mortgage Loans upon Foreclosure
Reclassifications	Prior periods' consolidated financial statements are reclassified whenever necessary to conform to the current periods' presentation.
Subsequent Events	Synovus has evaluated for consideration, or disclosure, all transactions, events, and circumstances, subsequent to the date of the consolidated balance sheet and through the date the accompanying unaudited interim consolidated financial statements were issued, and has reflected, or disclosed, those items deemed appropriate within the unaudited interim consolidated financial statements.

Investment Securities (Tables)

Investment Securities (Tables)	9 Months Ended
	Sep. 30, 2015
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 September 30, 2015 and December 31, 2014 are summarized below. September 30, 2015 (in thousands) Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value U.S. Treasury securities $ 43,159 514 — 43,673 U.S. Government agency securities 13,096 705 — 13,801 Securities issued by U.S. Government sponsored enterprises 126,734 866 — 127,600 Mortgage-backed securities issued by U.S. Government agencies 208,785 2,458 (388 ) 210,855 Mortgage-backed securities issued by U.S. Government sponsored enterprises 2,531,543 22,314 (5,764 ) 2,548,093 Collateralized mortgage obligations issued by U.S. Government agencies or sponsored enterprises 505,498 6,039 (917 ) 510,620 State and municipal securities 4,437 110 (1 ) 4,546 Equity securities 3,228 5,243 — 8,471 Other investments 20,161 51 (539 ) 19,673 Total investment securities available for sale $ 3,456,641 38,300 (7,609 ) 3,487,332 December 31, 2014 (in thousands) Amortized Cost (1) Gross Unrealized Gains Gross Unrealized Losses Fair Value U.S. Treasury securities $ 42,636 190 — 42,826 U.S. Government agency securities 26,426 898 — 27,324 Securities issued by U.S. Government sponsored enterprises 81,332 710 — 82,042 Mortgage-backed securities issued by U.S. Government agencies 177,678 2,578 (440 ) 179,816 Mortgage-backed securities issued by U.S. Government sponsored enterprises 2,250,897 19,915 (9,131 ) 2,261,681 Collateralized mortgage obligations issued by U.S. Government agencies or sponsored enterprises 414,562 4,856 (2,342 ) 417,076 State and municipal securities 5,024 183 (1 ) 5,206 Equity securities 3,228 3,520 6,748 Other investments 19,121 7 (441 ) 18,687 Total investment securities available for sale $ 3,020,904 32,857 (12,355 ) 3,041,406 (1) Amortized cost is adjusted for other-than-temporary impairment charges in 2014 , which have been recognized in the consolidated statements of income and were considered inconsequential.
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 September 30, 2015 and December 31, 2014 , are presented below. September 30, 2015 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 — — 18,912 388 18,912 388 Mortgage-backed securities issued by U.S. Government sponsored enterprises 225,845 745 591,427 5,019 817,272 5,764 Collateralized mortgage obligations issued by U.S. Government agencies or sponsored enterprises — — 76,198 917 76,198 917 State and municipal securities — — 48 1 48 1 Other investments — — 4,623 539 4,623 539 Total $ 225,845 745 691,208 6,864 917,053 7,609 December 31, 2014 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 — — 21,488 440 21,488 440 Mortgage-backed securities issued by U.S. Government sponsored enterprises 251,134 763 798,282 8,368 1,049,416 9,131 Collateralized mortgage obligations issued by U.S. Government agencies or sponsored enterprises 20,338 61 119,172 2,281 139,510 2,342 State and municipal securities — — 45 1 45 1 Other investments — — 3,680 441 3,680 441 Total $ 271,472 824 942,667 11,531 1,214,139 12,355
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 September 30, 2015 (in thousands) Within One Year 1 to 5 Years 5 to 10 Years More Than 10 Years No Stated Maturity Total Amortized Cost U.S. Treasury securities $ 18,287 24,872 — — — 43,159 U.S. Government agency securities — 6,676 6,420 — — 13,096 Securities issued by U.S. Government sponsored enterprises 80,679 46,055 — — — 126,734 Mortgage-backed securities issued by U.S. Government agencies — — 20,052 188,733 — 208,785 Mortgage-backed securities issued by U.S. Government sponsored enterprises — 870 1,881,955 648,718 — 2,531,543 Collateralized mortgage obligations issued by U.S. Government agencies or sponsored enterprises — — — 505,498 — 505,498 State and municipal securities 1,082 748 — 2,607 — 4,437 Equity securities — — — — 3,228 3,228 Other investments — — 15,000 2,000 3,161 20,161 Total amortized cost $ 100,048 79,221 1,923,427 1,347,556 6,389 3,456,641 Fair Value U.S. Treasury securities $ 18,287 25,386 — — — 43,673 U.S. Government agency securities — 6,990 6,811 — — 13,801 Securities issued by U.S. Government sponsored enterprises 81,139 46,461 — — — 127,600 Mortgage-backed securities issued by U.S. Government agencies — — 20,441 190,414 — 210,855 Mortgage-backed securities issued by U.S. Government sponsored enterprises — 910 1,886,916 660,267 — 2,548,093 Collateralized mortgage obligations issued by U.S. Government agencies or sponsored enterprises — — — 510,620 — 510,620 State and municipal securities 1,097 755 — 2,694 — 4,546 Equity securities — — — — 8,471 8,471 Other investments — — 15,051 1,531 3,091 19,673 Total fair value $ 100,523 80,502 1,929,219 1,365,526 11,562 3,487,332
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 nine and three months ended September 30, 2015 and 2014 are presented below. Other-than-temporary impairment charges of $88 thousand are included in gross realized losses for the nine months ended September 30, 2014 . The specific identification method is used to reclassify gains and losses out of other comprehensive income at the time of sale. Nine Months Ended September 30, Three Months Ended September 30, (in thousands) 2015 2014 2015 2014 Proceeds from sales of investment securities available for sale $ 82,156 20,815 — — Gross realized gains 2,710 1,419 — — Gross realized losses — (88 ) — — Investment securities gains, net $ 2,710 1,331 — —

Restructuring Charges (Tables)

Restructuring Charges (Tables)	9 Months Ended
	Sep. 30, 2015
Restructuring Charges [Abstract]
Schedule of Restructuring and Related Costs	The following table presents aggregate activity associated with accruals that resulted from restructuring charges during the nine and three months ended September 30, 2015 and 2014 : Severance Charges Lease Termination Charges Total (in thousands) Balance at December 31, 2014 $ 3,291 5,539 8,830 Accruals for efficiency initiatives — (4 ) (4 ) Payments (1,259 ) (608 ) (1,867 ) Balance at September 30, 2015 2,032 4,927 6,959 Balance at July 1, 2015 2,253 5,124 7,377 Accruals for efficiency initiatives — — — Payments (221 ) (197 ) (418 ) Balance at September 30, 2015 $ 2,032 4,927 6,959 Severance Charges Lease Termination Charges Total (in thousands) Balance at December 31, 2013 $ 1,572 1,383 2,955 Accruals for efficiency initiatives 8,046 — 8,046 Payments (4,965 ) (1,312 ) (6,277 ) Balance at September 30, 2014 4,653 71 4,724 Balance at July 1, 2014 6,224 78 6,302 Accruals for efficiency initiatives — — — Payments (1,571 ) (7 ) (1,578 ) Balance at September 30, 2014 $ 4,653 71 4,724 For the nine and three months ended September 30, 2015 and 2014 , total restructuring charges consist of the following components: Nine Months Ended September 30, Three Months Ended September 30, (in thousands) 2015 2014 2015 2014 Severance charges $ — 8,046 $ — — Lease termination charges (4 ) — — — Asset impairment charges 229 7,374 229 36 Gain on sale of assets held for sale, net (374 ) — (217 ) — Professional fees and other charges 116 1,681 57 773 Total restructuring charges, net $ (33 ) 17,101 $ 69 809

Loans and Allowance for Loan 25

Loans and Allowance for Loan Losses (Tables)	9 Months Ended
	Sep. 30, 2015
Loans and Leases Receivable, Allowance [Abstract]
Schedule of Current, Accruing Past Due, and Nonaccrual Loans	The following is a summary of current, accruing past due, and non-accrual loans by portfolio class as of September 30, 2015 and December 31, 2014 . Current, Accruing Past Due, and Non-accrual Loans September 30, 2015 (in thousands) Current Accruing 30-89 Days Past Due Accruing 90 Days or Greater Past Due Total Accruing Past Due Non-accrual Total Investment properties $ 5,544,594 2,400 — 2,400 10,582 5,557,576 1-4 family properties 1,073,356 4,122 81 4,203 16,994 1,094,553 Land acquisition 517,728 1,322 67 1,389 19,010 538,127 Total commercial real estate 7,135,678 7,844 148 7,992 46,586 7,190,256 Commercial, financial and agricultural 6,219,484 7,095 533 7,628 50,656 6,277,768 Owner-occupied 4,241,159 5,969 132 6,101 18,148 4,265,408 Total commercial and industrial 10,460,643 13,064 665 13,729 68,804 10,543,176 Home equity lines 1,662,930 4,557 297 4,854 16,263 1,684,047 Consumer mortgages 1,857,640 6,284 378 6,662 24,154 1,888,456 Credit cards 238,519 1,473 1,323 2,796 — 241,315 Other retail loans 340,277 3,128 187 3,315 1,833 345,425 Total retail 4,099,366 15,442 2,185 17,627 42,250 4,159,243 Total loans $ 21,695,687 36,350 2,998 39,348 157,640 21,892,675 (1 ) December 31, 2014 (in thousands) Current Accruing 30-89 Days Past Due Accruing 90 Days or Greater Past Due Total Accruing Past Due Non-accrual Total Investment properties $ 5,184,103 1,851 — 1,851 20,720 5,206,674 1-4 family properties 1,105,186 4,067 432 4,499 24,197 1,133,882 Land acquisition 551,308 363 — 363 34,375 586,046 Total commercial real estate 6,840,597 6,281 432 6,713 79,292 6,926,602 Commercial, financial and agricultural 6,130,184 9,979 1,790 11,769 40,359 6,182,312 Owner-occupied 4,052,679 6,404 225 6,629 26,099 4,085,407 Total commercial and industrial 10,182,863 16,383 2,015 18,398 66,458 10,267,719 Home equity lines 1,659,869 6,992 703 7,695 16,434 1,683,998 Consumer mortgages 1,648,145 12,626 12 12,638 33,278 1,694,061 Credit cards 250,304 1,971 1,374 3,345 — 253,649 Other retail loans 297,703 2,361 101 2,462 2,295 302,460 Total retail 3,856,021 23,950 2,190 26,140 52,007 3,934,168 Total loans $ 20,879,481 46,614 4,637 51,251 197,757 21,128,489 (2 ) (1) Total before net deferred fees and costs of $28.4 million . (2) Total before net deferred fees and costs of $30.8 million .
Loan Portfolio Credit Exposure	In the following tables, retail 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 Uniform Retail Credit Classification and Account Management Policy. Additionally, in accordance with the Interagency Supervisory Guidance on Allowance for Loan and Lease Losses Estimation Practices for Loans and Lines of Credit Secured by Junior Liens on 1-4 Family Residential Properties, the risk grade classifications of retail loans (home equity lines and consumer mortgages) secured by junior liens on 1-4 family residential properties also consider available information on the payment status of the associated senior lien with other financial institutions. Loan Portfolio Credit Exposure by Risk Grade September 30, 2015 (in thousands) Pass Special Mention Substandard (1) Doubtful (2) Loss Total Investment properties $ 5,357,016 125,646 74,914 — — 5,557,576 1-4 family properties 953,403 58,314 75,586 7,250 — 1,094,553 Land acquisition 451,438 52,157 34,084 448 — 538,127 Total commercial real estate 6,761,857 236,117 184,584 7,698 — 7,190,256 Commercial, financial and agricultural 6,001,990 141,305 117,256 15,789 1,428 (3) 6,277,768 Owner-occupied 4,059,211 77,470 128,091 177 459 (3) 4,265,408 Total commercial and industrial 10,061,201 218,775 245,347 15,966 1,887 10,543,176 Home equity lines 1,659,346 — 21,758 1,448 1,495 (3) 1,684,047 Consumer mortgages 1,858,377 — 28,460 1,494 125 (3) 1,888,456 Credit cards 239,992 — 497 — 826 (4) 241,315 Other retail loans 341,584 — 3,761 — 80 (3) 345,425 Total retail 4,099,299 — 54,476 2,942 2,526 4,159,243 Total loans $ 20,922,357 454,892 484,407 26,606 4,413 21,892,675 (5 ) December 31, 2014 (in thousands) Pass Special Mention Substandard (1) Doubtful (2) Loss Total Investment properties $ 4,936,319 167,490 102,865 — — 5,206,674 1-4 family properties 943,721 86,072 96,392 7,697 — 1,133,882 Land acquisition 462,313 60,902 62,101 730 — 586,046 Total commercial real estate 6,342,353 314,464 261,358 8,427 — 6,926,602 Commercial, financial and agricultural 5,905,589 143,879 123,225 9,539 80 (3) 6,182,312 Owner-occupied 3,827,943 95,647 161,045 327 445 (3) 4,085,407 Total commercial and industrial 9,733,532 239,526 284,270 9,866 525 10,267,719 Home equity lines 1,659,794 — 20,043 2,009 2,152 (3) 1,683,998 Consumer mortgages 1,653,491 — 37,656 2,654 260 (3) 1,694,061 Credit cards 252,275 — 495 — 879 (4) 253,649 Other retail loans 298,991 — 3,339 32 98 (3) 302,460 Total retail 3,864,551 — 61,533 4,695 3,389 3,934,168 Total loans $ 19,940,436 553,990 607,161 22,988 3,914 21,128,489 (6 ) (1) Includes $126.6 million and $170.9 million of non-accrual Substandard loans at September 30, 2015 and December 31, 2014 , respectively. (2) The loans within this risk grade are on non-accrual status. Commercial loans generally have an allowance for loan losses in accordance with ASC 310, and retail loans 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 Uniform Retail Credit Classification and Account Management Policy. (5) Total before net deferred fees and costs of $28.4 million . (6) Total before net deferred fees and costs of $30.8 million .
Schedule of Allowances for Loan Losses and Recorded Investment in Loans	The following table details the changes in the allowance for loan losses by loan segment for the nine months ended September 30, 2015 and 2014 . Allowance for Loan Losses and Recorded Investment in Loans As Of and For The Nine Months Ended September 30, 2015 (in thousands) Commercial Real Estate Commercial & Industrial Retail Unallocated Total Allowance for loan losses: Beginning balance $ 101,471 118,110 41,736 — 261,317 Charge-offs (12,120 ) (17,417 ) (16,535 ) — (46,072 ) Recoveries 10,500 5,774 5,391 — 21,665 Provision for loan losses (10,845 ) 15,954 8,881 — 13,990 Ending balance $ 89,006 122,421 $ 39,473 $ — $ 250,900 Ending balance: individually evaluated for impairment 18,091 12,568 783 — 31,441 Ending balance: collectively evaluated for impairment $ 70,915 109,853 38,690 — 219,459 Loans: Ending balance: total loans (1) $ 7,190,257 10,543,176 4,159,243 — 21,892,675 Ending balance: individually evaluated for impairment 159,582 109,904 39,858 — 309,344 Ending balance: collectively evaluated for impairment $ 7,030,675 10,433,272 4,119,385 — 21,583,331 As Of and For The Nine Months Ended September 30, 2014 (in thousands) Commercial Real Estate Commercial & Industrial Retail Unallocated Total Allowance for loan losses: Beginning balance $ 127,646 115,435 41,479 23,000 307,560 Allowance for loan losses of sold loans (281 ) (398 ) (340 ) (1,019 ) Charge-offs (41,139 ) (26,896 ) (19,082 ) — (87,117 ) Recoveries 8,318 9,562 6,434 — 24,314 Provision for loan losses 7,445 27,140 14,053 (23,000 ) 25,638 Ending balance $ 101,989 124,843 42,544 — 269,376 Ending balance: individually evaluated for impairment 22,107 15,863 1,195 — 39,165 Ending balance: collectively evaluated for impairment $ 79,882 108,980 41,349 — 230,211 Loans: Ending balance: total loans (2) $ 6,774,794 9,987,660 3,854,961 — 20,617,415 Ending balance: individually evaluated for impairment 317,011 172,860 47,669 — 537,540 Ending balance: collectively evaluated for impairment $ 6,457,783 9,814,800 3,807,292 — 20,079,875 (1) Total before net deferred fees and costs of $28.4 million . (2) Total before net deferred fees and costs of $28.8 million . The following table details the changes in the allowance for loan losses by loan segment for the three months ended September 30, 2015 and 2014 . Allowance for Loan Losses and Recorded Investment in Loans As Of and For The Three Months Ended September 30, 2015 (in thousands) Commercial Real Estate Commercial & Industrial Retail Unallocated Total Allowance for loan losses: Beginning balance $ 90,691 123,050 40,961 — 254,702 Charge-offs (1,722 ) (8,342 ) (4,779 ) — (14,843 ) Recoveries 4,019 2,203 1,863 — 8,085 Provision for loan losses (3,982 ) 5,510 1,428 — 2,956 Ending balance $ 89,006 122,421 39,473 — 250,900 Ending balance: individually evaluated for impairment 18,091 12,568 783 — 31,441 Ending balance: collectively evaluated for impairment $ 70,915 109,853 38,690 — 219,459 Loans: Ending balance: total loans (1) $ 7,190,257 10,543,176 4,159,243 — 21,892,675 Ending balance: individually evaluated for impairment 159,582 109,904 39,858 — 309,344 Ending balance: collectively evaluated for impairment $ 7,030,675 10,433,272 4,119,385 — 21,583,331 As Of and For The Three Months Ended September 30, 2014 (in thousands) Commercial Real Estate Commercial & Industrial Retail Unallocated Total Allowance for loan losses: Beginning balance $ 104,394 130,814 42,575 — 277,783 Charge-offs (5,233 ) (11,306 ) (6,222 ) — (22,761 ) Recoveries 3,099 5,257 2,155 — 10,511 Provision for loan losses (271 ) 78 4,036 — 3,843 Ending balance $ 101,989 $ 124,843 $ 42,544 $ — $ 269,376 Ending balance: individually evaluated for impairment 22,107 15,863 1,195 — 39,165 Ending balance: collectively evaluated for impairment $ 79,882 108,980 41,349 — 230,211 Loans: Ending balance: total loans (2) $ 6,774,794 9,987,660 3,854,961 — 20,617,415 Ending balance: individually evaluated for impairment 317,011 172,860 47,669 — 537,540 Ending balance: collectively evaluated for impairment $ 6,457,783 9,814,800 3,807,292 — 20,079,875 (1) Total before net deferred fees and costs of $28.4 million . (2) Total before net deferred fees and costs of $28.8 million .
Schedule of Impaired Loans	The tables below summarize impaired loans (including accruing TDRs) as of September 30, 2015 and December 31, 2014 . Impaired Loans (including accruing TDRs) September 30, 2015 Nine Months Ended September 30, 2015 Three Months Ended September 30, 2015 (in thousands) Recorded Investment Unpaid Principal Balance Related Allowance Average Recorded Investment Interest Income Recognized Average Recorded Investment Interest Income Recognized With no related allowance recorded Investment properties $ 8,087 10,715 — 12,301 — 8,343 — 1-4 family properties 2,327 6,378 — 2,544 — 2,262 — Land acquisition 10,238 40,401 — 16,034 — 11,001 — Total commercial real estate 20,652 57,494 — 30,879 — 21,606 — Commercial, financial and agricultural 6,326 9,656 — 5,976 — 7,242 — Owner-occupied 6,941 8,949 — 16,983 — 15,087 — Total commercial and industrial 13,267 18,605 — 22,959 — 22,329 — Home equity lines 1,030 1,030 — 421 — 1,145 — Consumer mortgages 837 2,065 — 1,053 — 1,030 — Credit cards — — — — — — — Other retail loans — — — — — — — Total retail 1,867 3,095 — 1,474 — 2,175 — Total impaired loans with no related allowance recorded $ 35,786 79,194 — 55,312 — 46,110 — With allowance recorded Investment properties 56,882 56,882 9,893 77,466 1,722 66,726 475 1-4 family properties 56,191 56,978 5,622 63,889 1,230 57,956 423 Land acquisition 25,857 26,588 2,576 37,502 746 27,338 198 Total commercial real estate 138,930 140,448 18,091 178,857 3,698 152,020 1,096 Commercial, financial and agricultural 45,172 46,678 10,437 43,821 828 36,225 191 Owner-occupied 51,465 51,595 2,131 57,079 1,378 50,487 426 Total commercial and industrial 96,637 98,273 12,568 100,900 2,206 86,712 617 Home equity lines 9,809 9,809 155 7,880 226 9,573 104 Consumer mortgages 23,270 23,270 555 27,309 955 24,007 295 Credit cards — — — — — — — Other retail loans 4,912 4,912 72 5,213 248 5,064 81 Total retail 37,991 37,991 782 40,402 1,429 38,644 480 Total impaired loans with allowance recorded $ 273,558 276,712 31,441 320,159 7,333 277,376 2,193 Total impaired loans Investment properties $ 64,969 67,597 9,893 89,767 1,722 75,069 475 1-4 family properties 58,518 63,356 5,622 66,433 1,230 60,218 423 Land acquisition 36,095 66,989 2,576 53,536 746 38,339 198 Total commercial real estate 159,582 197,942 18,091 209,736 3,698 173,626 1,096 Commercial, financial and agricultural 51,498 56,334 10,437 49,797 828 43,467 191 Owner-occupied 58,406 60,544 2,131 74,062 1,378 65,574 426 Total commercial and industrial 109,904 116,878 12,568 123,859 2,206 109,041 617 Home equity lines 10,839 10,839 155 8,301 226 10,718 104 Consumer mortgages 24,107 25,335 555 28,362 955 25,037 295 Credit cards — — — — — — — Other retail loans 4,912 4,912 72 5,213 248 5,064 81 Total retail 39,858 41,086 782 41,876 1,429 40,819 480 Total impaired loans $ 309,344 355,906 31,441 375,471 7,333 323,486 2,193 Impaired Loans (including accruing TDRs) December 31, 2014 Year Ended December 31, 2014 (in thousands) Recorded Investment Unpaid Principal Balance Related Allowance Average Recorded Investment Interest Income Recognized With no related allowance recorded Investment properties $ 15,368 20,237 — 25,311 — 1-4 family properties 2,981 10,520 — 5,441 — Land acquisition 21,504 61,843 — 29,954 — Total commercial real estate 39,853 92,600 — 60,706 — Commercial, financial and agricultural 7,391 11,193 — 8,984 — Owner-occupied 17,017 19,612 — 19,548 — Total commercial and industrial 24,408 30,805 — 28,532 — Home equity lines — — — — — Consumer mortgages 995 2,065 — 1,352 — Credit cards — — — — — Other retail loans — — — — — Total retail 995 2,065 — 1,352 — Total impaired loans with no related allowance recorded $ 65,256 125,470 — 90,590 — With allowance recorded Investment properties $ 81,758 83,963 5,413 129,289 3,690 1-4 family properties 80,625 81,357 11,442 94,773 2,645 Land acquisition 49,300 49,483 4,900 89,195 1,689 Total commercial real estate 211,683 214,803 21,755 313,257 8,024 Commercial, financial and agricultural 59,035 59,041 7,597 91,221 2,392 Owner-occupied 62,583 62,601 2,854 78,950 2,610 Total commercial and industrial 121,618 121,642 10,451 170,171 5,002 Home equity lines 4,848 4,848 129 3,604 1,405 Consumer mortgages 33,450 33,450 1,040 39,427 115 Credit cards — — — — — Other retail loans 5,293 5,293 101 4,997 315 Total retail 43,591 43,591 1,270 48,028 1,835 Total impaired loans with allowance recorded $ 376,892 380,036 33,476 531,456 14,861 Total impaired loans Investment properties $ 97,126 104,200 5,413 154,600 3,690 1-4 family properties 83,606 91,877 11,442 100,214 2,645 Land acquisition 70,804 111,326 4,900 119,149 1,689 Total commercial real estate 251,536 307,403 21,755 373,963 8,024 Commercial, financial and agricultural 66,426 70,234 7,597 100,205 2,392 Owner-occupied 79,600 82,213 2,854 98,498 2,610 Total commercial and industrial 146,026 152,447 10,451 198,703 5,002 Home equity lines 4,848 4,848 129 3,604 1,405 Consumer mortgages 34,445 35,515 1,040 40,779 115 Credit cards — — — — — Other retail loans 5,293 5,293 101 4,997 315 Total retail 44,586 45,656 1,270 49,380 1,835 Total impaired loans $ 442,148 505,506 33,476 622,046 14,861
Troubled Debt Restructurings	The following tables represent, by concession type, the post-modification balance for loans modified or renewed during the nine and three months ended September 30, 2015 and 2014 that were reported as accruing or non-accruing TDRs. TDRs by Concession Type Nine Months Ended September 30, 2015 (in thousands, except contract data) Number of Contracts Principal Forgiveness Below Market Interest Rate Term Extensions and/or Other Concessions Total Investment properties 5 $ — 16,932 6,905 23,837 1-4 family properties 31 14,823 4,078 1,774 20,675 Land acquisition 8 — 604 1,187 1,791 Total commercial real estate 44 14,823 21,614 9,866 46,303 Commercial, financial and agricultural 71 — 3,094 5,455 8,549 Owner-occupied 7 — 1,739 1,314 3,053 Total commercial and industrial 78 — 4,833 6,769 11,602 Home equity lines 53 — 2,826 2,905 5,731 Consumer mortgages 12 — 510 786 1,296 Credit cards — — — — — Other retail loans 20 — 259 634 893 Total retail 85 — 3,595 4,325 7,920 Total TDRs 207 $ 14,823 30,042 20,960 65,825 (1 ) Three Months Ended September 30, 2015 (in thousands, except contract data) Number of Contracts Principal Forgiveness Below Market Interest Rate Term Extensions and/or Other Concessions Total Investment properties 1 $ — — 3,090 3,090 1-4 family properties 10 — 721 895 1,616 Land acquisition 2 — — 368 368 Total commercial real estate 13 — 721 4,353 5,074 Commercial, financial and agricultural 22 — 1,514 1,611 3,125 Owner-occupied 4 — — 898 898 Total commercial and industrial 26 — 1,514 2,509 4,023 Home equity lines 5 — 309 757 1,066 Consumer mortgages — — — — — Credit cards — — — — — Other retail loans 7 — 2 139 141 Total retail 12 — 311 896 1,207 Total TDRs 51 $ — 2,546 7,758 10,304 (2 ) (1) Net charge-offs of $4.0 million were recorded during the nine months ended September 30, 2015 upon restructuring of these loans. (2) No net charge-offs were recorded during the three months ended September 30, 2015 upon restructuring of these loans. TDRs by Concession Type Nine Months Ended September 30, 2014 (in thousands, except contract data) Number of Contracts Principal Forgiveness Below Market Interest Rate Term Extensions and/or Other Concessions Total Investment properties 14 $ — 8,423 5,598 14,021 1-4 family properties 36 — 2,390 3,859 6,249 Land acquisition 15 2,338 4,721 2,688 9,747 Total commercial real estate 65 2,338 15,534 12,145 30,017 Commercial, financial and agricultural 68 60 7,639 16,977 24,676 Owner-occupied 14 — 22,178 14,392 36,570 Total commercial and industrial 82 60 29,817 31,369 61,247 Home equity lines 11 — 1,163 451 1,614 Consumer mortgages 13 — 2,296 315 2,611 Credit cards — — — — — Other retail loans 17 — 543 385 928 Total retail 41 — 4,002 1,151 5,153 Total TDRs 188 $ 2,398 49,354 44,665 96,417 (1 ) Three Months Ended September 30, 2014 (in thousands, except contract data) Number of Contracts Principal Forgiveness Below Market Interest Rate Term Extensions and/or Other Concessions Total Investment properties 4 $ — 875 3,899 4,774 1-4 family properties 7 — 879 203 1,082 Land acquisition 3 2,338 204 646 3,188 Total commercial real estate 14 2,338 1,958 4,748 9,044 Commercial, financial and agricultural 28 60 3,098 5,280 8,438 Owner-occupied 2 — 2,703 130 2,833 Total commercial and industrial 30 60 5,801 5,410 11,271 Home equity lines 5 — 435 — 435 Consumer mortgages 5 — 543 212 755 Credit cards — — — — Other retail loans 7 — 101 150 251 Total retail 17 — 1,079 362 1,441 Total TDRs 61 $ 2,398 8,838 10,520 21,756 (2 ) (1) Net charge-offs of $163 thousand were recorded during the nine months ended September 30, 2014 upon restructuring of these loans. (2) Net charge-offs of $163 thousand were recorded during the three months ended September 30, 2014 upon restructuring of these loans.
Troubled Debt Restructurings that Subsequently Defaulted	The following table presents TDRs that defaulted in the periods indicated and which were modified or renewed in a TDR within 12 months of the default date. Nine Months Ended September 30, 2015 Three Months Ended September 30, 2015 (in thousands, except contract data) Number of Contracts Recorded Investment Number of Contracts Recorded Investment Investment properties — $ — — $ — 1-4 family properties — — — — Land acquisition — — — — Total commercial real estate — — — — Commercial, financial and agricultural — — — — Owner-occupied 1 438 1 438 Total commercial and industrial 1 438 1 438 Home equity lines 2 74 1 40 Consumer mortgages — — — — Credit cards — — — — Other retail loans 1 81 — — Total retail 3 155 1 40 Total TDRs 4 $ 593 2 $ 478 Nine Months Ended September 30, 2014 Three Months Ended September 30, 2014 (in thousands, except contract data) Number of Contracts Recorded Investment Number of Contracts Recorded Investment Investment properties 1 186 — $ — 1-4 family properties 3 1,018 — — Land acquisition 1 428 — — Total commercial real estate 5 1,632 — — Commercial, financial and agricultural 4 1,559 2 181 Owner-occupied — — — — Total commercial and industrial 4 1,559 2 181 Home equity lines — — — — Consumer mortgages 3 206 2 136 Credit cards — — — — Other retail loans — — — — Total retail 3 206 2 136 Total TDRs 12 3,397 4 $ 317

Other Comprehensive Income (L26

Other Comprehensive Income (Loss) (Tables)	9 Months Ended
	Sep. 30, 2015
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 nine and three months ended September 30, 2015 and 2014 . Changes in Accumulated Other Comprehensive Income (Loss) by Component (Net of Income Taxes) (in thousands) Net unrealized gains (losses) on cash flow hedges Net unrealized gains (losses) on investment securities available for sale Post-retirement unfunded health benefit Total Balance as of December 31, 2014 $ (12,824 ) (713 ) 932 (12,605 ) Other comprehensive income before reclassifications — 7,941 143 8,084 Amounts reclassified from accumulated other comprehensive income (loss) 206 (1,667 ) (110 ) (1,571 ) Net current period other comprehensive income 206 6,274 33 6,513 Balance as of September 30, 2015 $ (12,618 ) 5,561 965 (6,092 ) Balance as of July 1, 2015 $ (12,687 ) (10,659 ) 1,023 (22,323 ) Other comprehensive income before reclassifications — 16,220 — 16,220 Amounts reclassified from accumulated other comprehensive income (loss) 69 — (58 ) 11 Net current period other comprehensive income 69 16,220 (58 ) 16,231 Balance as of September 30, 2015 $ (12,618 ) 5,561 965 (6,092 ) Changes in Accumulated Other Comprehensive Income (Loss) by Component (Net of Income Taxes) (in thousands) Net unrealized gains (losses) on cash flow hedges Net unrealized gains (losses) on investment securities available for sale Post-retirement unfunded health benefit Total Balance as of December 31, 2013 $ (13,099 ) (28,936 ) 777 (41,258 ) Other comprehensive income before reclassifications — 16,888 243 17,131 Amounts reclassified from accumulated other comprehensive income (loss) 206 (818 ) (88 ) (700 ) Net current period other comprehensive income 206 16,070 155 16,431 Balance at September 30, 2014 $ (12,893 ) (12,866 ) 932 (24,827 ) Balance as of July 1, 2014 $ (12,962 ) (1,686 ) 932 (13,716 ) Other comprehensive income (loss) before reclassifications — (11,180 ) — (11,180 ) Amounts reclassified from accumulated other comprehensive income (loss) 69 — — 69 Net current period other comprehensive income (loss) 69 (11,180 ) — (11,111 ) Balance as of September 30, 2014 $ (12,893 ) (12,866 ) 932 (24,827 )
Schedule of Reclassifications out of Accumulated Other Comprehensive Income (Loss)	The following table illustrates activity within the reclassifications out of accumulated other comprehensive income (loss), for the nine and three months ended September 30, 2015 and 2014 . Reclassifications out of Accumulated Other Comprehensive Income (Loss) Details About Accumulated Other Comprehensive Income (Loss) Components Amount Reclassified from Accumulated Other Comprehensive Income (Loss) Affected Line Item in the Statement Where Net Income is Presented For the Nine Months Ended September 30, 2015 2014 Net unrealized gains (losses) on cash flow hedges: Amortization of deferred losses $ (336 ) (336 ) Interest expense 130 130 Income tax (expense) benefit $ (206 ) (206 ) Reclassifications, net of income taxes Net unrealized gains (losses) on investment securities available for sale: Realized gain on sale of securities $ 2,710 1,331 Investment securities gains, net (1,043 ) (513 ) Income tax (expense) benefit $ 1,667 818 Reclassifications, net of income taxes Post-retirement unfunded health benefit: Amortization of actuarial gains $ 178 144 Salaries and other personnel expense (68 ) (56 ) Income tax (expense) benefit $ 110 88 Reclassifications, net of income taxes Reclassifications out of Accumulated Other Comprehensive Income (Loss) Details About Accumulated Other Comprehensive Income (Loss) Components Amount Reclassified from Accumulated Other Comprehensive Income (Loss) Affected Line Item in the Statement Where Net Income is Presented For the Three Months Ended September 30, 2015 2014 Net unrealized gains (losses) on cash flow hedges: Amortization of deferred losses $ (112 ) (112 ) Interest expense 43 43 Income tax (expense) benefit $ (69 ) (69 ) Reclassifications, net of income taxes Post-retirement unfunded health benefit: Amortization of actuarial gains $ 94 — Salaries and other personnel expense (36 ) — Income tax (expense) benefit $ 58 — Reclassifications, net of income taxes

Fair Value Accounting (Tables)

Fair Value Accounting (Tables)	9 Months Ended
	Sep. 30, 2015
Fair Value Disclosures [Abstract]
Financial Instruments Measured at Fair Value on Recurring Basis	The following table presents all financial instruments measured at fair value on a recurring basis as of September 30, 2015 and December 31, 2014, according to the valuation hierarchy included in ASC 820-10. For equity and debt securities, class was determined based on the nature and risks of the investments. Transfers betweens levels during the nine months ended September 30, 2015 and year ended December 31, 2014 were inconsequential. September 30, 2015 (in thousands) Level 1 Level 2 Level 3 Total Assets and Liabilities at Fair Value Assets Trading securities: Mortgage-backed securities issued by U.S. Government agencies — 3,141 — 3,141 Collateralized mortgage obligations issued by U.S. Government sponsored enterprises — 1,926 — 1,926 State and municipal securities — 757 — 757 Other investments — 20 — 20 Total trading securities $ — 5,844 — 5,844 Mortgage loans held for sale — 73,623 — 73,623 Investment securities available for sale: U.S. Treasury securities 43,673 — — 43,673 U.S. Government agency securities — 13,801 — 13,801 Securities issued by U.S. Government sponsored enterprises — 127,600 — 127,600 Mortgage-backed securities issued by U.S. Government agencies — 210,855 — 210,855 Mortgage-backed securities issued by U.S. Government sponsored enterprises — 2,548,093 — 2,548,093 Collateralized mortgage obligations issued by U.S. Government agencies or sponsored enterprises — 510,620 — 510,620 State and municipal securities — 4,546 — 4,546 Equity securities 8,471 — — 8,471 Other investments (1) 3,091 15,051 1,531 19,673 Total investment securities available for sale $ 55,235 3,430,566 1,531 3,487,332 Private equity investments — 867 26,850 27,717 Mutual funds held in rabbi trusts 10,233 — — 10,233 Derivative assets: Interest rate contracts — 32,710 — 32,710 Mortgage derivatives (2) — 1,845 — 1,845 Total derivative assets $ — 34,555 — 34,555 Liabilities Trading account liabilities — 3,002 — 3,002 Derivative liabilities: Interest rate contracts — 33,158 — 33,158 Mortgage derivatives (2) — 1,110 — 1,110 Visa derivative — — 1,415 1,415 Total derivative liabilities $ — 34,268 1,415 35,683 December 31, 2014 (in thousands) Level 1 Level 2 Level 3 Total Assets and Liabilities at Fair Value Assets Trading securities: Mortgage-backed securities issued by U.S. Government agencies — 145 — 145 Collateralized mortgage obligations issued by U.S. Government sponsored enterprises — 2,449 — 2,449 State and municipal securities — 1,976 — 1,976 All other mortgage-backed securities — 2,483 — 2,483 Other investments — 6,810 — 6,810 Total trading securities $ — 13,863 — 13,863 Mortgage loans held for sale — 63,328 — 63,328 Investment securities available for sale: U.S. Treasury securities 42,826 — — 42,826 U.S. Government agency securities — 27,324 — 27,324 Securities issued by U.S. Government sponsored enterprises — 82,042 — 82,042 Mortgage-backed securities issued by U.S. Government agencies — 179,816 — 179,816 Mortgage-backed securities issued by U.S. Government sponsored enterprises — 2,261,681 — 2,261,681 Collateralized mortgage obligations issued by U.S. Government agencies or sponsored enterprises — 417,076 — 417,076 State and municipal securities — 5,206 — 5,206 Equity securities 6,748 — — 6,748 Other investments (1) 2,035 15,007 1,645 18,687 Total investment securities available for sale $ 51,609 2,988,152 1,645 3,041,406 Private equity investments — 995 27,367 28,362 Mutual funds held in rabbi trusts 11,252 — — 11,252 Derivative assets: Interest rate contracts — 30,904 — 30,904 Mortgage derivatives (2) — 1,213 — 1,213 Total derivative assets $ — 32,117 — 32,117 Liabilities Trading account liabilities — 2,100 — 2,100 Salary stock units 1,206 — — 1,206 Derivative liabilities: Interest rate contracts — 31,398 — 31,398 Mortgage derivatives (2) — 753 — 753 Visa derivative — — 1,401 1,401 Total derivative liabilities $ — 32,151 1,401 33,552 (1) Based on an analysis of the nature and risks of these investments, Synovus has determined that presenting these investments as a single asset class is appropriate. (2) 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.
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. Mortgage loans held for sale are initially measured at fair value with subsequent changes in fair value recognized in earnings. Changes in fair value were recorded as a component of mortgage banking income in the consolidated statements of income. An immaterial portion of these changes in fair value was attributable to changes in instrument-specific credit risk. Changes in Fair Value Included in Net Income For the Nine Months Ended September 30, For the Three Months Ended September 30, (in thousands) 2015 2014 2015 2014 Mortgage loans held for sale $ 450 969 1,012 (813 ) Mortgage Loans Held for Sale (in thousands) As of September 30, 2015 As of December 31, 2014 Fair value 73,623 63,328 Unpaid principal balance 71,333 61,488 Fair value less aggregate unpaid principal balance $ 2,290 1,840
Changes in Level 3 Fair Value Measurements	Nine Months Ended September 30, 2015 2014 (in thousands) Investment Securities Available for Sale Private Equity Investments Visa Derivative Investment Securities Available for Sale Private Equity Investments Other Derivative Contracts, Net Beginning balance, January 1, $ 1,645 27,367 (1,401 ) 2,350 27,745 (2,706 ) Total gains (losses) realized/unrealized: Included in earnings — (517 ) (1,092 ) (88 ) (513 ) (2,731 ) Unrealized gains (losses) included in other comprehensive income (114 ) — — 63 — — Purchases — — — — — — Sales — — — — — — Issuances — — — — — — Settlements — — 1,078 (540 ) — 1,416 Amortization of discount/premium — — — — — — Transfers in and/or out of Level 3 — — — — — — Ending balance, September 30, $ 1,531 26,850 (1,415 ) 1,785 27,232 (4,021 ) Total net gains (losses) for the period included in earnings attributable to the change in unrealized gains (losses) relating to assets still held at September 30, $ — (517 ) (1,092 ) (88 ) (513 ) (2,731 ) Three Months Ended September 30, 2015 2014 (in thousands) Investment Securities Available for Sale Private Equity Investments Visa Derivative Investment Securities Available for Sale Private Equity Investments Visa Derivative Beginning balance, July 1, $ 1,700 26,959 (1,415 ) 1,866 27,376 (2,438 ) Total gains (losses) realized/unrealized: Included in earnings — (109 ) (363 ) — (144 ) (1,979 ) Unrealized gains (losses) included in other comprehensive income (169 ) — — (81 ) — — Purchases — — — — — — Sales — — — — — — Issuances — — — — — — Settlements — — 363 — — 396 Amortization of discount/premium — — — — — — Transfers in and/or out of Level 3 — — — — — — Ending balance, September 30, $ 1,531 26,850 (1,415 ) 1,785 27,232 (4,021 ) Total net gains (losses) for the period included in earnings attributable to the change in unrealized gains (losses) relating to assets still held at September 30, $ — (109 ) (363 ) — (144 ) (1,979 )
Assets and Liabilities Measured at Fair Value on Non-Recurring Basis	September 30, 2015 December 31, 2014 (in thousands) Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Impaired loans * — — 12,430 12,430 — — 28,588 28,588 Other loans held for sale — — — — — — 3,411 3,411 Other real estate — — 23,457 23,457 — — 32,046 32,046 Other assets held for sale $ — — 1,844 1,844 $ — — 3,718 3,718
Assets Measured at Fair Value on a Nonrecurring Basis	The following table presents fair value adjustments recognized in earnings for the nine and three months ended September 30, 2015 and 2014 for the assets measured at fair value on a non-recurring basis. Nine Months Ended September 30, Three Months Ended September 30, (in thousands) 2015 2014 2015 2014 Impaired loans * 3,549 20,661 1,789 9,380 Other loans held for sale — 285 — 285 Other real estate 7,405 7,343 2,645 4,114 Other assets held for sale $ 1,043 7,608 $ 1,043 100 * Impaired loans that are collateral-dependent.
Fair Value Inputs, Assets, Quantitative Information	September 30, 2015 (dollars in thousands) Level 3 Fair Value Valuation Technique Significant Unobservable Input Range (Weighted Average) (1) Assets measured at fair value on a recurring basis Investment Securities Available for Sale: Other Investments: Trust preferred securities $ 1,531 Discounted cash flow analysis Credit spread embedded in discount rate 549-649 bps (599 bps) Discount for lack of marketability (2) 0%-10% (0%) Private equity investments 26,850 Individual analysis of each investee company Multiple factors, including but not limited to, current operations, financial condition, cash flows, evaluation of business management and financial plans, and recently executed financing transactions related to the investee companies N/A Visa derivative liability 1,415 Internal valuation Estimated future cumulative deposits to the litigation escrow for settlement of the Covered Litigation, and estimated future monthly fees payable to the derivative counterparty N/A September 30, 2015 (dollars in thousands) Level 3 Fair Value Valuation Technique Significant Unobservable Input Range (Weighted Average) (1) Assets measured at fair value on a non-recurring basis Collateral dependent impaired loans $ 12,430 Third-party appraised value of collateral less estimated selling costs Discount to appraised value (3) Estimated selling costs 0% - 100% (44%) 0% - 10% (7%) Other real estate 23,457 Third-party appraised value of collateral less estimated selling costs Discount to appraised value (3) Estimated selling costs 0% - 25% (8%) 0% - 10% (7%) Other assets held for sale 1,844 Third-party appraised value of collateral less estimated selling costs or BOV Discount to appraised value (3) Estimated selling costs 0%-100% (55%) 0%-10% (7%) (1) The range represents management's best estimate of the high and low of the value that would be assigned to a particular input. For assets measured at fair value on a non-recurring basis, the weighted average is the measure of central tendencies; it is not the value that management is using for the asset or liability. (2) Represents management's estimate of discount that market participants would require based on the instrument's lack of liquidity. (3) Synovus also makes adjustments to the values of the assets listed above for various reasons, including age of the appraisal, information known by management about the property, such as occupancy rates, changes to the physical conditions of the property, and other factors. December 31, 2014 (dollars in thousands) Level 3 Fair Value Valuation Technique Significant Unobservable Input Range (Weighted Average) (1) Assets measured at fair value on a recurring basis Investment Securities Available for Sale: Other Investments: Trust preferred securities $ 1,645 Discounted cash flow analysis Credit spread embedded in discount rate 600-675 bps (639 bps) Discount for lack of marketability (2) 0%-10% (0%) Private equity investments 27,367 Individual analysis of each investee company Multiple factors, including but not limited to, current operations, financial condition, cash flows, evaluation of business management and financial plans, and recently executed financing transactions related to the investee companies (2) N/A Visa derivative liability 1,401 Internal valuation Estimated future cumulative deposits to the litigation escrow for settlement of the Covered Litigation, and estimated future monthly fees payable to the derivative counterparty N/A December 31, 2014 (dollars in thousands) Level 3 Fair Value Valuation Technique Significant Unobservable Input Range (Weighted Average) (1) Assets measured at fair value on a non-recurring basis Collateral dependent impaired loans $ 28,588 Third-party appraised value of collateral less estimated selling costs Discount to appraised value (2) Estimated selling costs 0%-100% (46%) 0%-10% (7%) Other loans held for sale 3,411 Third-party appraised value of collateral less estimated selling costs Discount to appraised value (2) Estimated selling costs 0%-11% (7%) 0%-10% (7%) Other real estate 32,046 Third-party appraised value of collateral less estimated selling costs Discount to appraised value (2) Estimated selling costs 0%-61% (16%) 0%-10% (7%) Other assets held for sale 3,718 Third-party appraised value of collateral less estimated selling costs or BOV Discount to appraised value (2) Estimated selling costs 0%-100% (49%) 0%-10% (7%) (1) The range represents management's best estimate of the high and low end of the value that would be assigned to a particular input. For assets measured at fair value on a non-recurring basis, the weighted average is the measure of central tendencies; it is not the value that management is using for the asset or liability. (2) Represents management's estimate of discount that market participants would require based on the instrument's lack of liquidity. (3) Synovus also makes adjustments to the values of the assets listed above for various reasons, including age of the appraisal, information known by management about the property, such as occupancy rates, changes to the physical conditions of the property, pending sales, and other factors.
Carrying and Estimated Fair Values of Financial Instruments Carried on Balance Sheet	The carrying and estimated fair values of financial instruments, as well as the level within the fair value hierarchy, as of September 30, 2015 and December 31, 2014 are as follows: September 30, 2015 (in thousands) Carrying Value Fair Value Level 1 Level 2 Level 3 Financial assets Cash and cash equivalents $ 329,396 329,396 329,396 — — Interest bearing funds with Federal Reserve Bank 837,641 837,641 837,641 — — Interest earning deposits with banks 21,170 21,170 21,170 — — Federal funds sold and securities purchased under resale agreements 69,732 69,732 69,732 — — Trading account assets 5,844 5,844 — 5,844 — Mortgage loans held for sale 73,623 73,623 — 73,623 — Investment securities available for sale 3,487,332 3,487,332 55,235 3,430,566 1,531 Private equity investments 27,717 27,717 — 867 26,850 Mutual funds held in rabbi trusts 10,233 10,233 10,233 — — Loans, net of deferred fees and costs 21,864,309 21,677,842 — — 21,677,842 Derivative assets 34,555 34,555 — 34,555 — Financial liabilities Trading account liabilities 3,002 3,002 — 3,002 — Non-interest bearing deposits 6,570,227 6,570,227 — 6,570,227 — Interest bearing deposits 16,207,186 16,218,720 — 16,218,720 — Federal funds purchased and securities sold under repurchase agreements 135,475 135,475 135,475 — — Long-term debt 2,038,719 2,098,864 — 2,098,864 — Derivative liabilities $ 35,683 35,683 — 34,268 1,415 December 31, 2014 (in thousands) Carrying Value Fair Value Level 1 Level 2 Level 3 Financial assets Cash and cash equivalents $ 485,489 485,489 485,489 — — Interest bearing funds with Federal Reserve Bank 721,362 721,362 721,362 — — Interest earning deposits with banks 11,810 11,810 11,810 — — Federal funds sold and securities purchased under resale agreements 73,111 73,111 73,111 — — Trading account assets 13,863 13,863 — 13,863 — Mortgage loans held for sale 63,328 63,328 — 63,328 — Other loans held for sale 3,606 3,606 — — 3,606 Investment securities available for sale 3,041,406 3,041,406 51,609 2,988,152 1,645 Private equity investments 28,362 28,362 — 995 27,367 Mutual funds held in rabbi trusts 11,252 11,252 11,252 — — Loans, net of deferred fees and costs 21,097,699 20,872,939 — — 20,872,939 Derivative assets 32,117 32,117 — 32,117 — Financial liabilities Trading account liabilities 2,100 2,100 — 2,100 — Non-interest bearing deposits 6,228,472 6,228,472 — 6,228,472 — Interest bearing deposits 15,303,228 15,299,372 — 15,299,372 — Federal funds purchased and securities sold under repurchase agreements 126,916 126,916 126,916 — — Salary stock units 1,206 1,206 1,206 — — Long-term debt 2,140,319 2,191,279 — 2,191,279 — Derivative liabilities $ 33,553 33,553 — 32,151 1,401

Derivative Instruments (Tables)

Derivative Instruments (Tables)	9 Months Ended
	Sep. 30, 2015
Summary of Derivative Instruments [Abstract]
Impact of Derivatives on Balance Sheet	The impact of derivative instruments on the consolidated balance sheets at September 30, 2015 and December 31, 2014 is presented below. Fair Value of Derivative Assets Fair Value of Derivative Liabilities (in thousands) Location on Consolidated Balance Sheet September 30, 2015 December 31, 2014 Location on Consolidated Balance Sheet September 30, 2015 December 31, 2014 Derivatives not designated as hedging instruments: Interest rate contracts Other assets 32,710 30,904 Other liabilities 33,158 31,398 Mortgage derivatives Other assets 1,845 1,213 Other liabilities 1,110 753 Visa derivative — — Other liabilities 1,415 1,401 Total derivatives not designated as hedging instruments $ 34,555 32,117 $ 35,683 33,552
Effect of Fair Value Hedges on Consolidated Statements of Income	The pre-tax effect of fair value hedges on the consolidated statements of income for the nine and three months ended September 30, 2015 and 2014 is presented below. Location of Gain (Loss) Recognized in Income Gain (Loss) Recognized in Income (in thousands) Nine Months Ended September 30, Derivatives not designated as hedging instruments 2015 2014 Interest rate contracts (1) Other non-interest income 10 449 Mortgage derivatives (2) Mortgage banking income 276 (704 ) Total $ 286 (255 ) Location of Gain (Loss) Recognized in Income Gain (Loss) Recognized in Income (in thousands) Three Months Ended September 30, Derivatives not designated as hedging instruments 2015 2014 Interest rate contracts (1) Other non-interest income 170 65 Mortgage derivatives (2) Mortgage banking income (1,955 ) 51 Total $ (1,785 ) 116 (1) Gain (loss) represents net fair value adjustments (including credit related adjustments) for customer swaps and offsetting positions. (2) Gain (loss) represents net fair value adjustments recorded for interest rate lock commitments and commitments to sell mortgage loans to third-party investors.

Net Income Per Common Share (Ta

Net Income Per Common Share (Tables)	9 Months Ended
	Sep. 30, 2015
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 nine and three months ended September 30, 2015 and 2014 . Nine Months Ended September 30, Three Months Ended September 30, (in thousands, except per share data) 2015 2014 2015 2014 Basic Net Income Per Common Share: Net income available to common shareholders $ 160,006 134,399 $ 55,369 44,229 Weighted average common shares outstanding 133,120 138,989 131,516 139,043 Net income per common share, basic $ 1.20 0.97 0.42 0.32 Diluted Net Income Per Common Share: Net income available to common shareholders $ 160,006 134,399 55,369 44,229 Weighted average common shares outstanding 133,120 138,989 131,516 139,043 Potentially dilutive shares from assumed exercise of securities or other contracts to purchase common stock 756 611 781 683 Weighted average diluted common shares 133,876 139,600 132,297 139,726 Net income per common share, diluted $ 1.20 0.96 0.42 0.32

Significant Accounting Polici30

Significant Accounting Policies (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
LIHTC [Member]
Basis Of Presentation [Line Items]
Investments	$ 19,600
Cash and Cash Equivalents [Member]
Basis Of Presentation [Line Items]
Total deposits	0	$ 125
Cash and cash equivalents	116,300	89,700
Interest earning deposits with banks	7,000	7,100
Federal funds sold	$ 68,400	$ 67,500

Share Repurchase Programs (Deta

Share Repurchase Programs (Details) - USD ($)	Oct. 20, 2015	Jan. 31, 2015	Sep. 30, 2015	Sep. 30, 2015	Dec. 31, 2014	Oct. 31, 2014
Accelerated Share Repurchase Program [Member] | Subsequent Event [Member]
Equity, Class of Treasury Stock [Line Items]
Authorized amount	$ 300,000,000
Stock repurchase program expiration date	15 months
Common Stock [Member]
Equity, Class of Treasury Stock [Line Items]
Repurchased amount			$ 161,900,000	$ 175,000,000
Shares repurchased			5,673,686
Additional shares repurchased				6,177,455
Common Stock [Member] | Accelerated Share Repurchase Program [Member]
Equity, Class of Treasury Stock [Line Items]
Authorized amount			$ 250,000,000	$ 250,000,000		$ 75,000,000
Repurchased amount				$ 250,000,000
Shares repurchased		391,612		9,100,000	2,510,460
Shares repurchased, average cost per share				$ 27.53

Sale of Branches (Details)

Sale of Branches (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2015	Dec. 31, 2014	Jan. 17, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loans		$ 21,613,409	$ 20,836,382
Deposits		$ 22,777,413	$ 21,531,700
Trust One Bank, Memphis, Tennessee [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loans				$ 89,600
Deposits				$ 191,300
Gain on sale of branches	$ 5,800

Investment Securities (Narrativ

Investment Securities (Narrative) (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2015USD ($)securities	Sep. 30, 2014USD ($)	Dec. 31, 2014USD ($)
Investments [Abstract]
Pledged to secure deposits | $	$ 2,130,000		$ 2,120,000
Other-than-temporary impairment charges | $	$ 88	$ 88
Number of securities in a loss position for less than twelve months	8
Number of securities in a loss position for twelve months or longer	32

Investment Securities (Summary

Investment Securities (Summary Of Available For Sale Investment Securities) (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 3,456,641	$ 3,020,904
Gross Unrealized Gains	38,300	32,857
Gross Unrealized Losses	(7,609)	(12,355)
Fair Value	3,487,332	3,041,406
U.S. Treasury Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	43,159	42,636
Gross Unrealized Gains	514	190
Gross Unrealized Losses	0	0
Fair Value	43,673	42,826
U.S. Government Agency Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	13,096	26,426
Gross Unrealized Gains	705	898
Gross Unrealized Losses	0	0
Fair Value	13,801	27,324
Securities Issued By U.S. Government Sponsored Enterprises [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	126,734	81,332
Gross Unrealized Gains	866	710
Gross Unrealized Losses	0	0
Fair Value	127,600	82,042
Mortgage-Backed Securities Issued By U.S. Government Agencies [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	208,785	177,678
Gross Unrealized Gains	2,458	2,578
Gross Unrealized Losses	(388)	(440)
Fair Value	210,855	179,816
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	2,531,543	2,250,897
Gross Unrealized Gains	22,314	19,915
Gross Unrealized Losses	(5,764)	(9,131)
Fair Value	2,548,093	2,261,681
Collateralized Mortgage Obligations Issued By U.S. Government Sponsored Enterprises [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	505,498	414,562
Gross Unrealized Gains	6,039	4,856
Gross Unrealized Losses	(917)	(2,342)
Fair Value	510,620	417,076
State And Municipal Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	4,437	5,024
Gross Unrealized Gains	110	183
Gross Unrealized Losses	(1)	(1)
Fair Value	4,546	5,206
Equity Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	3,228	3,228
Gross Unrealized Gains	5,243	$ 3,520
Gross Unrealized Losses	0
Fair Value	8,471	$ 6,748
Other Investments [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	20,161	19,121
Gross Unrealized Gains	51	7
Gross Unrealized Losses	(539)	(441)
Fair Value	$ 19,673	$ 18,687

Investment Securities (Schedule

Investment Securities (Schedule Of Unrealized Loss On Investments) (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Fair Value	$ 225,845	$ 271,472
Less than 12 Months, Unrealized Losses	745	824
12 Months or Longer, Fair Value	691,208	942,667
12 Months or Longer, Unrealized Losses	6,864	11,531
Total Fair Value, Fair Value	917,053	1,214,139
Total Fair Value, Unrealized Losses	7,609	12,355
Mortgage-Backed Securities Issued By U.S. Government Agencies [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Fair Value	0	0
Less than 12 Months, Unrealized Losses	0	0
12 Months or Longer, Fair Value	18,912	21,488
12 Months or Longer, Unrealized Losses	388	440
Total Fair Value, Fair Value	18,912	21,488
Total Fair Value, Unrealized Losses	388	440
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Fair Value	225,845	251,134
Less than 12 Months, Unrealized Losses	745	763
12 Months or Longer, Fair Value	591,427	798,282
12 Months or Longer, Unrealized Losses	5,019	8,368
Total Fair Value, Fair Value	817,272	1,049,416
Total Fair Value, Unrealized Losses	5,764	9,131
Collateralized Mortgage Obligations Issued By U.S. Government Sponsored Enterprises [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Fair Value	0	20,338
Less than 12 Months, Unrealized Losses	0	61
12 Months or Longer, Fair Value	76,198	119,172
12 Months or Longer, Unrealized Losses	917	2,281
Total Fair Value, Fair Value	76,198	139,510
Total Fair Value, Unrealized Losses	917	2,342
State And Municipal Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Fair Value	0	0
Less than 12 Months, Unrealized Losses	0	0
12 Months or Longer, Fair Value	48	45
12 Months or Longer, Unrealized Losses	1	1
Total Fair Value, Fair Value	48	45
Total Fair Value, Unrealized Losses	1	1
Other Investments [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Fair Value	0	0
Less than 12 Months, Unrealized Losses	0	0
12 Months or Longer, Fair Value	4,623	3,680
12 Months or Longer, Unrealized Losses	539	441
Total Fair Value, Fair Value	4,623	3,680
Total Fair Value, Unrealized Losses	$ 539	$ 441

Investment Securities (Amortize

Investment Securities (Amortized Cost And Estimated Fair Value By Contractual Maturity Of Investment Securities Available For Sale) (Details) $ in Thousands	Sep. 30, 2015USD ($)
Schedule of Available-for-sale Securities [Line Items]
Within One year, Amortized Cost	$ 100,048
1 to 5 Years, Amortized Cost	79,221
5 to 10 Years, Amortized Cost	1,923,427
More Than 10 years, Amortized Cost	1,347,556
No Stated Maturity, Amortized Cost	6,389
Total, Amortized Cost	3,456,641
Within One Year, Fair Value	100,523
1 to 5 Years, Fair Value	80,502
5 to 10 Years, Fair Value	1,929,219
More Than 10 years, Fair Value	1,365,526
No Stated Maturity, Fair Value	11,562
Total, Fair Value	3,487,332
U.S. Treasury Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Within One year, Amortized Cost	18,287
1 to 5 Years, Amortized Cost	24,872
5 to 10 Years, Amortized Cost	0
More Than 10 years, Amortized Cost	0
No Stated Maturity, Amortized Cost	0
Total, Amortized Cost	43,159
Within One Year, Fair Value	18,287
1 to 5 Years, Fair Value	25,386
5 to 10 Years, Fair Value	0
More Than 10 years, Fair Value	0
No Stated Maturity, Fair Value	0
Total, Fair Value	43,673
U.S. Government Agency Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Within One year, Amortized Cost	0
1 to 5 Years, Amortized Cost	6,676
5 to 10 Years, Amortized Cost	6,420
More Than 10 years, Amortized Cost	0
No Stated Maturity, Amortized Cost	0
Total, Amortized Cost	13,096
Within One Year, Fair Value	0
1 to 5 Years, Fair Value	6,990
5 to 10 Years, Fair Value	6,811
More Than 10 years, Fair Value	0
No Stated Maturity, Fair Value	0
Total, Fair Value	13,801
Securities Issued By U.S. Government Sponsored Enterprises [Member]
Schedule of Available-for-sale Securities [Line Items]
Within One year, Amortized Cost	80,679
1 to 5 Years, Amortized Cost	46,055
5 to 10 Years, Amortized Cost	0
More Than 10 years, Amortized Cost	0
No Stated Maturity, Amortized Cost	0
Total, Amortized Cost	126,734
Within One Year, Fair Value	81,139
1 to 5 Years, Fair Value	46,461
5 to 10 Years, Fair Value	0
More Than 10 years, Fair Value	0
No Stated Maturity, Fair Value	0
Total, Fair Value	127,600
Mortgage-Backed Securities Issued By U.S. Government Agencies [Member]
Schedule of Available-for-sale Securities [Line Items]
Within One year, Amortized Cost	0
1 to 5 Years, Amortized Cost	0
5 to 10 Years, Amortized Cost	20,052
More Than 10 years, Amortized Cost	188,733
No Stated Maturity, Amortized Cost	0
Total, Amortized Cost	208,785
Within One Year, Fair Value	0
1 to 5 Years, Fair Value	0
5 to 10 Years, Fair Value	20,441
More Than 10 years, Fair Value	190,414
No Stated Maturity, Fair Value	0
Total, Fair Value	210,855
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Schedule of Available-for-sale Securities [Line Items]
Within One year, Amortized Cost	0
1 to 5 Years, Amortized Cost	870
5 to 10 Years, Amortized Cost	1,881,955
More Than 10 years, Amortized Cost	648,718
No Stated Maturity, Amortized Cost	0
Total, Amortized Cost	2,531,543
Within One Year, Fair Value	0
1 to 5 Years, Fair Value	910
5 to 10 Years, Fair Value	1,886,916
More Than 10 years, Fair Value	660,267
No Stated Maturity, Fair Value	0
Total, Fair Value	2,548,093
Collateralized Mortgage-Backed Securities Issued By U.S. Government Sponsored Enterprises [Member]
Schedule of Available-for-sale Securities [Line Items]
Within One year, Amortized Cost	0
1 to 5 Years, Amortized Cost	0
5 to 10 Years, Amortized Cost	0
More Than 10 years, Amortized Cost	505,498
No Stated Maturity, Amortized Cost	0
Total, Amortized Cost	505,498
Within One Year, Fair Value	0
1 to 5 Years, Fair Value	0
5 to 10 Years, Fair Value	0
More Than 10 years, Fair Value	510,620
No Stated Maturity, Fair Value	0
Total, Fair Value	510,620
State And Municipal Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Within One year, Amortized Cost	1,082
1 to 5 Years, Amortized Cost	748
5 to 10 Years, Amortized Cost	0
More Than 10 years, Amortized Cost	2,607
No Stated Maturity, Amortized Cost	0
Total, Amortized Cost	4,437
Within One Year, Fair Value	1,097
1 to 5 Years, Fair Value	755
5 to 10 Years, Fair Value	0
More Than 10 years, Fair Value	2,694
No Stated Maturity, Fair Value	0
Total, Fair Value	4,546
Securities With No Stated Maturity (Equity Securities) [Member]
Schedule of Available-for-sale Securities [Line Items]
Within One year, Amortized Cost	0
1 to 5 Years, Amortized Cost	0
5 to 10 Years, Amortized Cost	0
More Than 10 years, Amortized Cost	0
No Stated Maturity, Amortized Cost	3,228
Total, Amortized Cost	3,228
Within One Year, Fair Value	0
1 to 5 Years, Fair Value	0
5 to 10 Years, Fair Value	0
More Than 10 years, Fair Value	0
No Stated Maturity, Fair Value	8,471
Total, Fair Value	8,471
Other Investments [Member]
Schedule of Available-for-sale Securities [Line Items]
Within One year, Amortized Cost	0
1 to 5 Years, Amortized Cost	0
5 to 10 Years, Amortized Cost	15,000
More Than 10 years, Amortized Cost	2,000
No Stated Maturity, Amortized Cost	3,161
Total, Amortized Cost	20,161
Within One Year, Fair Value	0
1 to 5 Years, Fair Value	0
5 to 10 Years, Fair Value	15,051
More Than 10 years, Fair Value	1,531
No Stated Maturity, Fair Value	3,091
Total, Fair Value	$ 19,673

Investment Securities (Summar37

Investment Securities (Summary Of Sales Transactions In The Investment Securities Available For Sale Portfolio) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Investments [Abstract]
Proceeds from sale and maturity of investment securities available for sale	$ 0	$ 0	$ 82,156	$ 20,815
Gross realized gains	0	0	2,710	1,419
Gross realized losses	0	0	0	(88)
Investment securities gains, net	$ 0	$ 0	$ 2,710	$ 1,331

Restructuring Charges (Narrativ

Restructuring Charges (Narrative) (Details) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2015USD ($)	Sep. 30, 2014USD ($)	Sep. 30, 2015USD ($)	Sep. 30, 2014USD ($)	Dec. 31, 2014branches
Restructuring Cost and Reserve [Line Items]
Gain on disposition of certain branch locations			$ 374
Other operating expenses	$ 22,400	$ 33,475	67,816	$ 72,839
Number of branches closed | branches					13
Facility Closing [Member]
Restructuring Cost and Reserve [Line Items]
Other operating expenses			$ 341

Restructuring Charges (Schedule

Restructuring Charges (Schedule Of Restructuring And Related Costs) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Restructuring Charges [Abstract]
Severance charges	$ 0	$ 0	$ 0	$ 8,046
Lease termination charges	0	0	(4)	0
Asset impairment charges	229	36	229	7,374
Gain on sale of assets held for sale, net	(217)	0	(374)	0
Professional fees and other charges	57	773	116	1,681
Total restructuring charges, net	$ 69	$ 809	$ (33)	$ 17,101

Restructuring Charges (Restruct

Restructuring Charges (Restructuring Reserve) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Restructuring Reserve [Roll Forward]
Beginning balance	$ 7,377	$ 6,302	$ 8,830	$ 2,955
Accruals for efficiency initiatives	0	0	(4)	8,046
Payments	(418)	(1,578)	(1,867)	(6,277)
Ending balance	6,959	4,724	6,959	4,724
Severance Charges [Member]
Restructuring Reserve [Roll Forward]
Beginning balance	2,253	6,224	3,291	1,572
Accruals for efficiency initiatives	0	0	0	8,046
Payments	(221)	(1,571)	(1,259)	(4,965)
Ending balance	2,032	4,653	2,032	4,653
Lease Termination Charges [Member]
Restructuring Reserve [Roll Forward]
Beginning balance	5,124	78	5,539	1,383
Accruals for efficiency initiatives	0	0	(4)	0
Payments	(197)	(7)	(608)	(1,312)
Ending balance	$ 4,927	$ 71	$ 4,927	$ 71

Loans and Allowance for Loan 41

Loans and Allowance for Loan Losses (Narrative) (Details) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average recorded investment in impaired loans	$ 309,344,000	$ 537,540,000	$ 309,344,000	$ 537,540,000
Provision for loan losses	(2,956,000)	(3,843,000)	(13,990,000)	(25,638,000)
Interest income recognized	2,193,000		7,333,000	0	$ 14,861,000
Average recorded investment in impaired loans	323,486,000	559,700,000	375,471,000	666,800,000	622,046,000
Interest income recognized for accruing TDRs		3,700,000		11,700,000
Allowance for loan losses	250,900,000	269,376,000	$ 250,900,000	269,376,000	261,317,000	$ 254,702,000	$ 277,783,000	$ 307,560,000
Substandard [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Retail loan substandard period (in days)			90 days
Loss and Charged Off [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Retail loans downgraded to loss (in days)			120 days
Accruing TDRs With Modifications And Renewals Completed [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accruing troubled debt restructuring	240,400,000		$ 240,400,000		348,400,000
Allowance for loan losses	16,200,000		16,200,000		21,000,000
Minimum [Member] | Accruing TDRs With Modifications And Renewals Completed [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial-type impaired loans			1,000,000
Unallocated [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average recorded investment in impaired loans	0	0	0	0
Provision for loan losses	0	0	0	23,000,000
Allowance for loan losses	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 23,000,000

Loans and Allowance for Loan 42

Loans and Allowance for Loan Losses (Schedule Of Current, Accruing Past Due And Nonaccrual Loans) (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014	Sep. 30, 2014
Valuation and Qualifying Accounts Disclosure [Line Items]
Current	$ 21,695,687	$ 20,879,481
Accruing 30-89 Days Past Due	36,350	46,614
Accruing 90 Days or Greater Past Due	2,998	4,637
Total Accruing Past Due	39,348	51,251
Non-accrual	157,640	197,757
Total loans	21,892,675	21,128,489	$ 20,617,415
Deferred fees and costs, net	28,400	30,800	$ 28,800
Home Equity Lines [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Current	1,662,930	1,659,869
Accruing 30-89 Days Past Due	4,557	6,992
Accruing 90 Days or Greater Past Due	297	703
Total Accruing Past Due	4,854	7,695
Non-accrual	16,263	16,434
Total loans	1,684,047	1,683,998
Consumer Mortgages [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Current	1,857,640	1,648,145
Accruing 30-89 Days Past Due	6,284	12,626
Accruing 90 Days or Greater Past Due	378	12
Total Accruing Past Due	6,662	12,638
Non-accrual	24,154	33,278
Total loans	1,888,456	1,694,061
Credit Cards [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Current	238,519	250,304
Accruing 30-89 Days Past Due	1,473	1,971
Accruing 90 Days or Greater Past Due	1,323	1,374
Total Accruing Past Due	2,796	3,345
Non-accrual	0	0
Total loans	241,315	253,649
Other Retail Loans [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Current	340,277	297,703
Accruing 30-89 Days Past Due	3,128	2,361
Accruing 90 Days or Greater Past Due	187	101
Total Accruing Past Due	3,315	2,462
Non-accrual	1,833	2,295
Total loans	345,425	302,460
Investment Properties [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Current	5,544,594	5,184,103
Accruing 30-89 Days Past Due	2,400	1,851
Accruing 90 Days or Greater Past Due	0	0
Total Accruing Past Due	2,400	1,851
Non-accrual	10,582	20,720
Total loans	5,557,576	5,206,674
1-4 Family Properties [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Current	1,073,356	1,105,186
Accruing 30-89 Days Past Due	4,122	4,067
Accruing 90 Days or Greater Past Due	81	432
Total Accruing Past Due	4,203	4,499
Non-accrual	16,994	24,197
Total loans	1,094,553	1,133,882
Land Acquisition [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Current	517,728	551,308
Accruing 30-89 Days Past Due	1,322	363
Accruing 90 Days or Greater Past Due	67	0
Total Accruing Past Due	1,389	363
Non-accrual	19,010	34,375
Total loans	538,127	586,046
Commercial Real Estate [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Current	7,135,678	6,840,597
Accruing 30-89 Days Past Due	7,844	6,281
Accruing 90 Days or Greater Past Due	148	432
Total Accruing Past Due	7,992	6,713
Non-accrual	46,586	79,292
Total loans	7,190,256	6,926,602
Commercial, Financial and Agricultural [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Current	6,219,484	6,130,184
Accruing 30-89 Days Past Due	7,095	9,979
Accruing 90 Days or Greater Past Due	533	1,790
Total Accruing Past Due	7,628	11,769
Non-accrual	50,656	40,359
Total loans	6,277,768	6,182,312
Owner-Occupied [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Current	4,241,159	4,052,679
Accruing 30-89 Days Past Due	5,969	6,404
Accruing 90 Days or Greater Past Due	132	225
Total Accruing Past Due	6,101	6,629
Non-accrual	18,148	26,099
Total loans	4,265,408	4,085,407
Commercial and Industrial [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Current	10,460,643	10,182,863
Accruing 30-89 Days Past Due	13,064	16,383
Accruing 90 Days or Greater Past Due	665	2,015
Total Accruing Past Due	13,729	18,398
Non-accrual	68,804	66,458
Total loans	10,543,176	10,267,719
Retail [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Current	4,099,366	3,856,021
Accruing 30-89 Days Past Due	15,442	23,950
Accruing 90 Days or Greater Past Due	2,185	2,190
Total Accruing Past Due	17,627	26,140
Non-accrual	42,250	52,007
Total loans	$ 4,159,243	$ 3,934,168

Loans and Allowance for Loan 43

Loans and Allowance for Loan Losses (Loan Portfolio Credit Exposure) (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Dec. 31, 2014	Sep. 30, 2014
Financing Receivable, Recorded Investment [Line Items]
Total loans	$ 21,892,675	$ 21,128,489	$ 20,617,415
Nonaccrual substandard loans	126,600	170,900
Deferred fees and costs, net	$ 28,400	30,800	$ 28,800
Maximum [Member]
Financing Receivable, Recorded Investment [Line Items]
Allowance for loan losses, percent of loan amount	50.00%
Home Equity Lines [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	$ 1,684,047	1,683,998
Consumer Mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,888,456	1,694,061
Credit Cards [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	241,315	253,649
Other Retail Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	345,425	302,460
Commercial and Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	10,543,176	10,267,719
Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	7,190,256	6,926,602
Investment Properties [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	5,557,576	5,206,674
1-4 Family Properties [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,094,553	1,133,882
Land Acquisition [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	538,127	586,046
Commercial, Financial and Agricultural [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	6,277,768	6,182,312
Owner-Occupied [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	4,265,408	4,085,407
Retail [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	4,159,243	3,934,168
Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	20,922,357	19,940,436
Pass [Member] | Home Equity Lines [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,659,346	1,659,794
Pass [Member] | Consumer Mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,858,377	1,653,491
Pass [Member] | Credit Cards [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	239,992	252,275
Pass [Member] | Other Retail Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	341,584	298,991
Pass [Member] | Commercial and Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	10,061,201	9,733,532
Pass [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	6,761,857	6,342,353
Pass [Member] | Investment Properties [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	5,357,016	4,936,319
Pass [Member] | 1-4 Family Properties [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	953,403	943,721
Pass [Member] | Land Acquisition [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	451,438	462,313
Pass [Member] | Commercial, Financial and Agricultural [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	6,001,990	5,905,589
Pass [Member] | Owner-Occupied [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	4,059,211	3,827,943
Pass [Member] | Retail [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	4,099,299	3,864,551
Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	454,892	553,990
Special Mention [Member] | Home Equity Lines [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Special Mention [Member] | Consumer Mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Special Mention [Member] | Credit Cards [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Special Mention [Member] | Other Retail Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Special Mention [Member] | Commercial and Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	218,775	239,526
Special Mention [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	236,117	314,464
Special Mention [Member] | Investment Properties [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	125,646	167,490
Special Mention [Member] | 1-4 Family Properties [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	58,314	86,072
Special Mention [Member] | Land Acquisition [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	52,157	60,902
Special Mention [Member] | Commercial, Financial and Agricultural [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	141,305	143,879
Special Mention [Member] | Owner-Occupied [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	77,470	95,647
Special Mention [Member] | Retail [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	484,407	607,161
Substandard [Member] | Home Equity Lines [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	21,758	20,043
Substandard [Member] | Consumer Mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	28,460	37,656
Substandard [Member] | Credit Cards [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	497	495
Substandard [Member] | Other Retail Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	3,761	3,339
Substandard [Member] | Commercial and Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	245,347	284,270
Substandard [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	184,584	261,358
Substandard [Member] | Investment Properties [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	74,914	102,865
Substandard [Member] | 1-4 Family Properties [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	75,586	96,392
Substandard [Member] | Land Acquisition [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	34,084	62,101
Substandard [Member] | Commercial, Financial and Agricultural [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	117,256	123,225
Substandard [Member] | Owner-Occupied [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	128,091	161,045
Substandard [Member] | Retail [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	54,476	61,533
Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	26,606	22,988
Doubtful [Member] | Home Equity Lines [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,448	2,009
Doubtful [Member] | Consumer Mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,494	2,654
Doubtful [Member] | Credit Cards [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Doubtful [Member] | Other Retail Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	32
Doubtful [Member] | Commercial and Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	15,966	9,866
Doubtful [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	7,698	8,427
Doubtful [Member] | Investment Properties [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Doubtful [Member] | 1-4 Family Properties [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	7,250	7,697
Doubtful [Member] | Land Acquisition [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	448	730
Doubtful [Member] | Commercial, Financial and Agricultural [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	15,789	9,539
Doubtful [Member] | Owner-Occupied [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	177	327
Doubtful [Member] | Retail [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	2,942	4,695
Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	4,413	3,914
Loss [Member] | Home Equity Lines [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,495	2,152
Loss [Member] | Consumer Mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	125	260
Loss [Member] | Credit Cards [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	826	879
Loss [Member] | Other Retail Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	80	98
Loss [Member] | Commercial and Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,887	525
Loss [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Loss [Member] | Investment Properties [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Loss [Member] | 1-4 Family Properties [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Loss [Member] | Land Acquisition [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Loss [Member] | Commercial, Financial and Agricultural [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,428	80
Loss [Member] | Owner-Occupied [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	459	445
Loss [Member] | Retail [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans	$ 2,526	$ 3,389

Loans and Allowance for Loan 44

Loans and Allowance for Loan Losses (Schedule Of Allowances For Loan Losses And Recorded Investment In Loans) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance, allowance	$ 254,702	$ 277,783	$ 261,317	$ 307,560
Allowance for loan losses of sold loans				(1,019)
Charge-offs	(14,843)	(22,761)	(46,072)	(87,117)
Recoveries	8,085	10,511	21,665	24,314
Provision for loan losses	2,956	3,843	13,990	25,638
Ending balance, allowance	250,900	269,376	250,900	269,376
Ending balance: individually evaluated for impairment, allowance	31,441	39,165	31,441	39,165
Ending balance: collectively evaluated for impairment, allowance	219,459	230,211	219,459	230,211
Total loans	21,892,675	20,617,415	21,892,675	20,617,415	$ 21,128,489
Ending balance: individually evaluated for impairment, loans	309,344	537,540	309,344	537,540
Ending balance: collectively evaluated for impairment, loans	21,583,331	20,079,875	21,583,331	20,079,875
Deferred fees and costs, net	28,400	28,800	28,400	28,800	$ 30,800
Commercial Real Estate [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance, allowance	90,691	104,394	101,471	127,646
Allowance for loan losses of sold loans				(281)
Charge-offs	(1,722)	(5,233)	(12,120)	(41,139)
Recoveries	4,019	3,099	10,500	8,318
Provision for loan losses	(3,982)	(271)	(10,845)	7,445
Ending balance, allowance	89,006	101,989	89,006	101,989
Ending balance: individually evaluated for impairment, allowance	18,091	22,107	18,091	22,107
Ending balance: collectively evaluated for impairment, allowance	70,915	79,882	70,915	79,882
Total loans	7,190,257	6,774,794	7,190,257	6,774,794
Ending balance: individually evaluated for impairment, loans	159,582	317,011	159,582	317,011
Ending balance: collectively evaluated for impairment, loans	7,030,675	6,457,783	7,030,675	6,457,783
Commercial and Industrial [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance, allowance	123,050	130,814	118,110	115,435
Allowance for loan losses of sold loans				(398)
Charge-offs	(8,342)	(11,306)	(17,417)	(26,896)
Recoveries	2,203	5,257	5,774	9,562
Provision for loan losses	5,510	78	15,954	27,140
Ending balance, allowance	122,421	124,843	122,421	124,843
Ending balance: individually evaluated for impairment, allowance	12,568	15,863	12,568	15,863
Ending balance: collectively evaluated for impairment, allowance	109,853	108,980	109,853	108,980
Total loans	10,543,176	9,987,660	10,543,176	9,987,660
Ending balance: individually evaluated for impairment, loans	109,904	172,860	109,904	172,860
Ending balance: collectively evaluated for impairment, loans	10,433,272	9,814,800	10,433,272	9,814,800
Retail [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance, allowance	40,961	42,575	41,736	41,479
Allowance for loan losses of sold loans				(340)
Charge-offs	(4,779)	(6,222)	(16,535)	(19,082)
Recoveries	1,863	2,155	5,391	6,434
Provision for loan losses	1,428	4,036	8,881	14,053
Ending balance, allowance	39,473	42,544	39,473	42,544
Ending balance: individually evaluated for impairment, allowance	783	1,195	783	1,195
Ending balance: collectively evaluated for impairment, allowance	38,690	41,349	38,690	41,349
Total loans	4,159,243	3,854,961	4,159,243	3,854,961
Ending balance: individually evaluated for impairment, loans	39,858	47,669	39,858	47,669
Ending balance: collectively evaluated for impairment, loans	4,119,385	3,807,292	4,119,385	3,807,292
Unallocated [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance, allowance	0	0	0	23,000
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provision for loan losses	0	0	0	(23,000)
Ending balance, allowance	0	0	0	0
Ending balance: individually evaluated for impairment, allowance	0	0	0	0
Ending balance: collectively evaluated for impairment, allowance	0	0	0	0
Total loans	0	0	0	0
Ending balance: individually evaluated for impairment, loans	0	0	0	0
Ending balance: collectively evaluated for impairment, loans	$ 0	$ 0	$ 0	$ 0

Loans and Allowance for Loan 45

Loans and Allowance for Loan Losses (Schedule Of Impaired Loans) (Details) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Financing Receivable, Impaired [Line Items]
Recorded Investment, With no related allowance recorded	$ 35,786,000		$ 35,786,000		$ 65,256,000
Recorded Investment, With allowance recorded	273,558,000		273,558,000		376,892,000
Recorded Investment	309,344,000		309,344,000		442,148,000
Unpaid Principal Balance, With no related allowance recorded	79,194,000		79,194,000		125,470,000
Unpaid Principal Balance, With allowance recorded	276,712,000		276,712,000		380,036,000
Unpaid Principal Balance	355,906,000		355,906,000		505,506,000
Related Allowance, With no related allowance recorded	0		0		0
Related Allowance, With allowance recorded	31,441,000		31,441,000		33,476,000
Related Allowance	31,441,000		31,441,000		33,476,000
Average Recorded Investment, With no related allowance recorded	46,110,000		55,312,000		90,590,000
Average Recorded Investment, With allowance recorded	277,376,000		320,159,000		531,456,000
Average Recorded Investment	323,486,000	$ 559,700,000	375,471,000	$ 666,800,000	622,046,000
Interest Income Recognized, With no related allowance recorded	0		0		0
Interest Income Recognized, With allowance recorded	2,193,000		7,333,000		14,861,000
Interest Income Recognized	2,193,000		7,333,000	$ 0	14,861,000
Home Equity Lines [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment, With no related allowance recorded	1,030,000		1,030,000		0
Recorded Investment, With allowance recorded	9,809,000		9,809,000		4,848,000
Recorded Investment	10,839,000		10,839,000		4,848,000
Unpaid Principal Balance, With no related allowance recorded	1,030,000		1,030,000		0
Unpaid Principal Balance, With allowance recorded	9,809,000		9,809,000		4,848,000
Unpaid Principal Balance	10,839,000		10,839,000		4,848,000
Related Allowance, With no related allowance recorded	0		0		0
Related Allowance, With allowance recorded	155,000		155,000		129,000
Related Allowance	155,000		155,000		129,000
Average Recorded Investment, With no related allowance recorded	1,145,000		421,000		0
Average Recorded Investment, With allowance recorded	9,573,000		7,880,000		3,604,000
Average Recorded Investment	10,718,000		8,301,000		3,604,000
Interest Income Recognized, With no related allowance recorded	0		0		0
Interest Income Recognized, With allowance recorded	104,000		226,000		1,405,000
Interest Income Recognized	104,000		226,000		1,405,000
Consumer Mortgages [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment, With no related allowance recorded	837,000		837,000		995,000
Recorded Investment, With allowance recorded	23,270,000		23,270,000		33,450,000
Recorded Investment	24,107,000		24,107,000		34,445,000
Unpaid Principal Balance, With no related allowance recorded	2,065,000		2,065,000		2,065,000
Unpaid Principal Balance, With allowance recorded	23,270,000		23,270,000		33,450,000
Unpaid Principal Balance	25,335,000		25,335,000		35,515,000
Related Allowance, With no related allowance recorded	0		0		0
Related Allowance, With allowance recorded	555,000		555,000		1,040,000
Related Allowance	555,000		555,000		1,040,000
Average Recorded Investment, With no related allowance recorded	1,030,000		1,053,000		1,352,000
Average Recorded Investment, With allowance recorded	24,007,000		27,309,000		39,427,000
Average Recorded Investment	25,037,000		28,362,000		40,779,000
Interest Income Recognized, With no related allowance recorded	0		0		0
Interest Income Recognized, With allowance recorded	295,000		955,000		115,000
Interest Income Recognized	295,000		955,000		115,000
Credit Card Receivable [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment, With no related allowance recorded	0		0		0
Recorded Investment, With allowance recorded	0		0		0
Recorded Investment	0		0		0
Unpaid Principal Balance, With no related allowance recorded	0		0		0
Unpaid Principal Balance, With allowance recorded	0		0		0
Unpaid Principal Balance	0		0		0
Related Allowance, With no related allowance recorded	0		0		0
Related Allowance, With allowance recorded	0		0		0
Related Allowance	0		0		0
Average Recorded Investment, With no related allowance recorded	0		0		0
Average Recorded Investment, With allowance recorded	0		0		0
Average Recorded Investment	0		0		0
Interest Income Recognized, With no related allowance recorded	0		0		0
Interest Income Recognized, With allowance recorded	0		0		0
Interest Income Recognized	0		0		0
Other Retail Loans [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment, With no related allowance recorded	0		0		0
Recorded Investment, With allowance recorded	4,912,000		4,912,000		5,293,000
Recorded Investment	4,912,000		4,912,000		5,293,000
Unpaid Principal Balance, With no related allowance recorded	0		0		0
Unpaid Principal Balance, With allowance recorded	4,912,000		4,912,000		5,293,000
Unpaid Principal Balance	4,912,000		4,912,000		5,293,000
Related Allowance, With no related allowance recorded	0		0		0
Related Allowance, With allowance recorded	72,000		72,000		101,000
Related Allowance	72,000		72,000		101,000
Average Recorded Investment, With no related allowance recorded	0		0		0
Average Recorded Investment, With allowance recorded	5,064,000		5,213,000		4,997,000
Average Recorded Investment	5,064,000		5,213,000		4,997,000
Interest Income Recognized, With no related allowance recorded	0		0		0
Interest Income Recognized, With allowance recorded	81,000		248,000		315,000
Interest Income Recognized	81,000		248,000		315,000
Investment Properties [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment, With no related allowance recorded	8,087,000		8,087,000		15,368,000
Recorded Investment, With allowance recorded	56,882,000		56,882,000		81,758,000
Recorded Investment	64,969,000		64,969,000		97,126,000
Unpaid Principal Balance, With no related allowance recorded	10,715,000		10,715,000		20,237,000
Unpaid Principal Balance, With allowance recorded	56,882,000		56,882,000		83,963,000
Unpaid Principal Balance	67,597,000		67,597,000		104,200,000
Related Allowance, With no related allowance recorded	0		0		0
Related Allowance, With allowance recorded	9,893,000		9,893,000		5,413,000
Related Allowance	9,893,000		9,893,000		5,413,000
Average Recorded Investment, With no related allowance recorded	8,343,000		12,301,000		25,311,000
Average Recorded Investment, With allowance recorded	66,726,000		77,466,000		129,289,000
Average Recorded Investment	75,069,000		89,767,000		154,600,000
Interest Income Recognized, With no related allowance recorded	0		0		0
Interest Income Recognized, With allowance recorded	475,000		1,722,000		3,690,000
Interest Income Recognized	475,000		1,722,000		3,690,000
1-4 Family Properties [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment, With no related allowance recorded	2,327,000		2,327,000		2,981,000
Recorded Investment, With allowance recorded	56,191,000		56,191,000		80,625,000
Recorded Investment	58,518,000		58,518,000		83,606,000
Unpaid Principal Balance, With no related allowance recorded	6,378,000		6,378,000		10,520,000
Unpaid Principal Balance, With allowance recorded	56,978,000		56,978,000		81,357,000
Unpaid Principal Balance	63,356,000		63,356,000		91,877,000
Related Allowance, With no related allowance recorded	0		0		0
Related Allowance, With allowance recorded	5,622,000		5,622,000		11,442,000
Related Allowance	5,622,000		5,622,000		11,442,000
Average Recorded Investment, With no related allowance recorded	2,262,000		2,544,000		5,441,000
Average Recorded Investment, With allowance recorded	57,956,000		63,889,000		94,773,000
Average Recorded Investment	60,218,000		66,433,000		100,214,000
Interest Income Recognized, With no related allowance recorded	0		0		0
Interest Income Recognized, With allowance recorded	423,000		1,230,000		2,645,000
Interest Income Recognized	423,000		1,230,000		2,645,000
Land Acquisition [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment, With no related allowance recorded	10,238,000		10,238,000		21,504,000
Recorded Investment, With allowance recorded	25,857,000		25,857,000		49,300,000
Recorded Investment	36,095,000		36,095,000		70,804,000
Unpaid Principal Balance, With no related allowance recorded	40,401,000		40,401,000		61,843,000
Unpaid Principal Balance, With allowance recorded	26,588,000		26,588,000		49,483,000
Unpaid Principal Balance	66,989,000		66,989,000		111,326,000
Related Allowance, With no related allowance recorded	0		0		0
Related Allowance, With allowance recorded	2,576,000		2,576,000		4,900,000
Related Allowance	2,576,000		2,576,000		4,900,000
Average Recorded Investment, With no related allowance recorded	11,001,000		16,034,000		29,954,000
Average Recorded Investment, With allowance recorded	27,338,000		37,502,000		89,195,000
Average Recorded Investment	38,339,000		53,536,000		119,149,000
Interest Income Recognized, With no related allowance recorded	0		0		0
Interest Income Recognized, With allowance recorded	198,000		746,000		1,689,000
Interest Income Recognized	198,000		746,000		1,689,000
Commercial Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment, With no related allowance recorded	20,652,000		20,652,000		39,853,000
Recorded Investment, With allowance recorded	138,930,000		138,930,000		211,683,000
Recorded Investment	159,582,000		159,582,000		251,536,000
Unpaid Principal Balance, With no related allowance recorded	57,494,000		57,494,000		92,600,000
Unpaid Principal Balance, With allowance recorded	140,448,000		140,448,000		214,803,000
Unpaid Principal Balance	197,942,000		197,942,000		307,403,000
Related Allowance, With no related allowance recorded	0		0		0
Related Allowance, With allowance recorded	18,091,000		18,091,000		21,755,000
Related Allowance	18,091,000		18,091,000		21,755,000
Average Recorded Investment, With no related allowance recorded	21,606,000		30,879,000		60,706,000
Average Recorded Investment, With allowance recorded	152,020,000		178,857,000		313,257,000
Average Recorded Investment	173,626,000		209,736,000		373,963,000
Interest Income Recognized, With no related allowance recorded	0		0		0
Interest Income Recognized, With allowance recorded	1,096,000		3,698,000		8,024,000
Interest Income Recognized	1,096,000		3,698,000		8,024,000
Commercial, Financial and Agricultural [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment, With no related allowance recorded	6,326,000		6,326,000		7,391,000
Recorded Investment, With allowance recorded	45,172,000		45,172,000		59,035,000
Recorded Investment	51,498,000		51,498,000		66,426,000
Unpaid Principal Balance, With no related allowance recorded	9,656,000		9,656,000		11,193,000
Unpaid Principal Balance, With allowance recorded	46,678,000		46,678,000		59,041,000
Unpaid Principal Balance	56,334,000		56,334,000		70,234,000
Related Allowance, With no related allowance recorded	0		0		0
Related Allowance, With allowance recorded	10,437,000		10,437,000		7,597,000
Related Allowance	10,437,000		10,437,000		7,597,000
Average Recorded Investment, With no related allowance recorded	7,242,000		5,976,000		8,984,000
Average Recorded Investment, With allowance recorded	36,225,000		43,821,000		91,221,000
Average Recorded Investment	43,467,000		49,797,000		100,205,000
Interest Income Recognized, With no related allowance recorded	0		0		0
Interest Income Recognized, With allowance recorded	191,000		828,000		2,392,000
Interest Income Recognized	191,000		828,000		2,392,000
Owner-Occupied [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment, With no related allowance recorded	6,941,000		6,941,000		17,017,000
Recorded Investment, With allowance recorded	51,465,000		51,465,000		62,583,000
Recorded Investment	58,406,000		58,406,000		79,600,000
Unpaid Principal Balance, With no related allowance recorded	8,949,000		8,949,000		19,612,000
Unpaid Principal Balance, With allowance recorded	51,595,000		51,595,000		62,601,000
Unpaid Principal Balance	60,544,000		60,544,000		82,213,000
Related Allowance, With no related allowance recorded	0		0		0
Related Allowance, With allowance recorded	2,131,000		2,131,000		2,854,000
Related Allowance	2,131,000		2,131,000		2,854,000
Average Recorded Investment, With no related allowance recorded	15,087,000		16,983,000		19,548,000
Average Recorded Investment, With allowance recorded	50,487,000		57,079,000		78,950,000
Average Recorded Investment	65,574,000		74,062,000		98,498,000
Interest Income Recognized, With no related allowance recorded	0		0		0
Interest Income Recognized, With allowance recorded	426,000		1,378,000		2,610,000
Interest Income Recognized	426,000		1,378,000		2,610,000
Commercial and Industrial [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment, With no related allowance recorded	13,267,000		13,267,000		24,408,000
Recorded Investment, With allowance recorded	96,637,000		96,637,000		121,618,000
Recorded Investment	109,904,000		109,904,000		146,026,000
Unpaid Principal Balance, With no related allowance recorded	18,605,000		18,605,000		30,805,000
Unpaid Principal Balance, With allowance recorded	98,273,000		98,273,000		121,642,000
Unpaid Principal Balance	116,878,000		116,878,000		152,447,000
Related Allowance, With no related allowance recorded	0		0		0
Related Allowance, With allowance recorded	12,568,000		12,568,000		10,451,000
Related Allowance	12,568,000		12,568,000		10,451,000
Average Recorded Investment, With no related allowance recorded	22,329,000		22,959,000		28,532,000
Average Recorded Investment, With allowance recorded	86,712,000		100,900,000		170,171,000
Average Recorded Investment	109,041,000		123,859,000		198,703,000
Interest Income Recognized, With no related allowance recorded	0		0		0
Interest Income Recognized, With allowance recorded	617,000		2,206,000		5,002,000
Interest Income Recognized	617,000		2,206,000		5,002,000
Retail [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment, With no related allowance recorded	1,867,000		1,867,000		995,000
Recorded Investment, With allowance recorded	37,991,000		37,991,000		43,591,000
Recorded Investment	39,858,000		39,858,000		44,586,000
Unpaid Principal Balance, With no related allowance recorded	3,095,000		3,095,000		2,065,000
Unpaid Principal Balance, With allowance recorded	37,991,000		37,991,000		43,591,000
Unpaid Principal Balance	41,086,000		41,086,000		45,656,000
Related Allowance, With no related allowance recorded	0		0		0
Related Allowance, With allowance recorded	782,000		782,000		1,270,000
Related Allowance	782,000		782,000		1,270,000
Average Recorded Investment, With no related allowance recorded	2,175,000		1,474,000		1,352,000
Average Recorded Investment, With allowance recorded	38,644,000		40,402,000		48,028,000
Average Recorded Investment	40,819,000		41,876,000		49,380,000
Interest Income Recognized, With no related allowance recorded	0		0		0
Interest Income Recognized, With allowance recorded	480,000		1,429,000		1,835,000
Interest Income Recognized	$ 480,000		$ 1,429,000		$ 1,835,000

Loans and Allowance for Loan 46

Loans and Allowance for Loan Losses (Troubled Debt Restructurings) (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2015USD ($)Contract	Sep. 30, 2014USD ($)Contract	Sep. 30, 2015USD ($)Contract	Sep. 30, 2014USD ($)Contract
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	51	61	207	188
Recorded Investment	$ 10,304,000	$ 21,756,000	$ 65,825,000	$ 96,417,000
Net charge-offs	$ 0	$ 163,000	$ 4,000,000	$ 163,000
Home Equity Lines [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	5	5	53	11
Recorded Investment	$ 1,066,000	$ 435,000	$ 5,731,000	$ 1,614,000
Consumer Mortgages [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	0	5	12	13
Recorded Investment	$ 0	$ 755,000	$ 1,296,000	$ 2,611,000
Credit Cards [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	0	0	0	0
Recorded Investment	$ 0	$ 0	$ 0	$ 0
Other Retail Loans [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	7	7	20	17
Recorded Investment	$ 141,000	$ 251,000	$ 893,000	$ 928,000
Investment Properties [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	1	4	5	14
Recorded Investment	$ 3,090,000	$ 4,774,000	$ 23,837,000	$ 14,021,000
1-4 Family Properties [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	10	7	31	36
Recorded Investment	$ 1,616,000	$ 1,082,000	$ 20,675,000	$ 6,249,000
Land Acquisition [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	2	3	8	15
Recorded Investment	$ 368,000	$ 3,188,000	$ 1,791,000	$ 9,747,000
Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	13	14	44	65
Recorded Investment	$ 5,074,000	$ 9,044,000	$ 46,303,000	$ 30,017,000
Commercial, Financial and Agricultural [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	22	28	71	68
Recorded Investment	$ 3,125,000	$ 8,438,000	$ 8,549,000	$ 24,676,000
Owner-Occupied [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	4	2	7	14
Recorded Investment	$ 898,000	$ 2,833,000	$ 3,053,000	$ 36,570,000
Commercial and Industrial [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	26	30	78	82
Recorded Investment	$ 4,023,000	$ 11,271,000	$ 11,602,000	$ 61,247,000
Retail [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	12	17	85	41
Recorded Investment	$ 1,207,000	$ 1,441,000	$ 7,920,000	$ 5,153,000
Principal Forgiveness [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment	0	2,398,000	14,823,000	2,398,000
Principal Forgiveness [Member] | Home Equity Lines [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment	0	0	0	0
Principal Forgiveness [Member] | Consumer Mortgages [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment	0	0	0	0
Principal Forgiveness [Member] | Credit Cards [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment	0	0	0	0
Principal Forgiveness [Member] | Other Retail Loans [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment	0	0	0	0
Principal Forgiveness [Member] | Investment Properties [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment	0	0	0	0
Principal Forgiveness [Member] | 1-4 Family Properties [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment	0	0	14,823,000	0
Principal Forgiveness [Member] | Land Acquisition [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment	0	2,338,000	0	2,338,000
Principal Forgiveness [Member] | Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment	0	2,338,000	14,823,000	2,338,000
Principal Forgiveness [Member] | Commercial, Financial and Agricultural [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment	0	60,000	0	60,000
Principal Forgiveness [Member] | Owner-Occupied [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment	0	0	0	0
Principal Forgiveness [Member] | Commercial and Industrial [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment	0	60,000	0	60,000
Principal Forgiveness [Member] | Retail [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment	0	0	0	0
Below Market Interest Rate [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment	2,546,000	8,838,000	30,042,000	49,354,000
Below Market Interest Rate [Member] | Home Equity Lines [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment	309,000	435,000	2,826,000	1,163,000
Below Market Interest Rate [Member] | Consumer Mortgages [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment	0	543,000	510,000	2,296,000
Below Market Interest Rate [Member] | Credit Cards [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment	0	0	0	0
Below Market Interest Rate [Member] | Other Retail Loans [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment	2,000	101,000	259,000	543,000
Below Market Interest Rate [Member] | Investment Properties [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment	0	875,000	16,932,000	8,423,000
Below Market Interest Rate [Member] | 1-4 Family Properties [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment	721,000	879,000	4,078,000	2,390,000
Below Market Interest Rate [Member] | Land Acquisition [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment	0	204,000	604,000	4,721,000
Below Market Interest Rate [Member] | Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment	721,000	1,958,000	21,614,000	15,534,000
Below Market Interest Rate [Member] | Commercial, Financial and Agricultural [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment	1,514,000	3,098,000	3,094,000	7,639,000
Below Market Interest Rate [Member] | Owner-Occupied [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment	0	2,703,000	1,739,000	22,178,000
Below Market Interest Rate [Member] | Commercial and Industrial [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment	1,514,000	5,801,000	4,833,000	29,817,000
Below Market Interest Rate [Member] | Retail [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment	311,000	1,079,000	3,595,000	4,002,000
Term Extensions and or Other Concessions [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment	7,758,000	10,520,000	20,960,000	44,665,000
Term Extensions and or Other Concessions [Member] | Home Equity Lines [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment	757,000	0	2,905,000	451,000
Term Extensions and or Other Concessions [Member] | Consumer Mortgages [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment	0	$ 212,000	786,000	315,000
Term Extensions and or Other Concessions [Member] | Credit Cards [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment	0		0	0
Term Extensions and or Other Concessions [Member] | Other Retail Loans [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment	139,000	$ 150,000	634,000	385,000
Term Extensions and or Other Concessions [Member] | Investment Properties [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment	3,090,000	3,899,000	6,905,000	5,598,000
Term Extensions and or Other Concessions [Member] | 1-4 Family Properties [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment	895,000	203,000	1,774,000	3,859,000
Term Extensions and or Other Concessions [Member] | Land Acquisition [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment	368,000	646,000	1,187,000	2,688,000
Term Extensions and or Other Concessions [Member] | Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment	4,353,000	4,748,000	9,866,000	12,145,000
Term Extensions and or Other Concessions [Member] | Commercial, Financial and Agricultural [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment	1,611,000	5,280,000	5,455,000	16,977,000
Term Extensions and or Other Concessions [Member] | Owner-Occupied [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment	898,000	130,000	1,314,000	14,392,000
Term Extensions and or Other Concessions [Member] | Commercial and Industrial [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment	2,509,000	5,410,000	6,769,000	31,369,000
Term Extensions and or Other Concessions [Member] | Retail [Member]
Financing Receivable, Modifications [Line Items]
Recorded Investment	$ 896,000	$ 362,000	$ 4,325,000	$ 1,151,000

Loans and Allowance for Loan 47

Loans and Allowance for Loan Losses (Troubled Debt Restructurings That Subsequently Defaulted) (Details) - Troubled Debt Restructurings That Subsequently Defaulted [Member] $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015USD ($)Contract	Sep. 30, 2014USD ($)Contract	Sep. 30, 2015USD ($)Contract	Sep. 30, 2014USD ($)Contract
Financing Receivable, Modifications [Line Items]
Number of Contracts	2	4	4	12
Recorded Investment | $	$ 478	$ 317	$ 593	$ 3,397
Home Equity Lines [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	1	0	2	0
Recorded Investment | $	$ 40	$ 0	$ 74	$ 0
Consumer Mortgages [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	2	0	3
Recorded Investment | $	$ 0	$ 136	$ 0	$ 206
Credit Cards [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	0	0	0
Recorded Investment | $	$ 0	$ 0	$ 0	$ 0
Other Retail Loans [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	0	1	0
Recorded Investment | $	$ 0	$ 0	$ 81	$ 0
Investment Properties [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	0	0	1
Recorded Investment | $	$ 0	$ 0	$ 0	$ 186
1-4 Family Properties [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	0	0	3
Recorded Investment | $	$ 0	$ 0	$ 0	$ 1,018
Land Acquisition [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	0	0	1
Recorded Investment | $	$ 0	$ 0	$ 0	$ 428
Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	0	0	5
Recorded Investment | $	$ 0	$ 0	$ 0	$ 1,632
Commercial, Financial and Agricultural [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	0	2	0	4
Recorded Investment | $	$ 0	$ 181	$ 0	$ 1,559
Owner-Occupied [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	1	0	1	0
Recorded Investment | $	$ 438	$ 0	$ 438	$ 0
Commercial and Industrial [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	1	2	1	4
Recorded Investment | $	$ 438	$ 181	$ 438	$ 1,559
Retail [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	1	2	3	3
Recorded Investment | $	$ 40	$ 136	$ 155	$ 206

Other Real Estate (Details)

Other Real Estate (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Other Real Estate, Foreclosed Assets, and Repossessed Assets [Abstract]
Other real estate	$ 64,346		$ 64,346		$ 85,472
Loans foreclosed and transferred to other real estate			23,900	$ 35,500
Foreclosed real estate expense, net	4,503	$ 9,074	18,350	18,818
Write-downs to net realizable value and losses resulting from sales transactions			14,864	$ 16,734
Consumer mortgages	$ 6,200		$ 6,200		$ 12,800

Other Comprehensive Income (L49

Other Comprehensive Income (Loss) (Narrative) (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Jun. 30, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Dec. 31, 2013
Class of Stock [Line Items]
Accumulated other comprehensive income (loss)	$ (6,092)	$ (22,323)	$ (12,605)	$ (24,827)	$ (13,716)	$ (41,258)
Net Unrealized Gains (Losses) on Cash Flow Hedges [Member]
Class of Stock [Line Items]
Accumulated other comprehensive income (loss)	(12,618)	(12,687)	(12,824)	(12,893)	(12,962)	(13,099)
Net Unrealized Gains (Losses) on Cash Flow Hedges [Member] | Valuation Allowance of Deferred Tax Assets [Member]
Class of Stock [Line Items]
Accumulated other comprehensive income (loss)	(12,100)
Net Unrealized Gains (Losses) on Investment Securities Available for Sale [Member]
Class of Stock [Line Items]
Accumulated other comprehensive income (loss)	5,561	$ (10,659)	$ (713)	$ (12,866)	$ (1,686)	$ (28,936)
Net Unrealized Gains (Losses) on Investment Securities Available for Sale [Member] | Valuation Allowance of Deferred Tax Assets [Member]
Class of Stock [Line Items]
Accumulated other comprehensive income (loss)	$ (13,300)

Other Comprehensive Income (L50

Other Comprehensive Income (Loss) (Changes in Accumulated Other Comprehensive Income (Loss) by Component (Net of Income Taxes)) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Changes in Accumulated Other Comprehensive Income (Loss) by Component [Roll Forward]
Beginning balance	$ (22,323)	$ (13,716)	$ (12,605)	$ (41,258)
Other comprehensive income (loss) before reclassifications	16,220	(11,180)	8,084	17,131
Amounts reclassified from accumulated other comprehensive income (loss)	11	69	(1,571)	(700)
Net current period other comprehensive income (loss)	16,231	(11,111)	6,513	16,431
Ending balance	(6,092)	(24,827)	(6,092)	(24,827)
Net Unrealized Gains (Losses) on Cash Flow Hedges [Member]
Changes in Accumulated Other Comprehensive Income (Loss) by Component [Roll Forward]
Beginning balance	(12,687)	(12,962)	(12,824)	(13,099)
Other comprehensive income (loss) before reclassifications	0	0	0	0
Amounts reclassified from accumulated other comprehensive income (loss)	69	69	206	206
Net current period other comprehensive income (loss)	69	69	206	206
Ending balance	(12,618)	(12,893)	(12,618)	(12,893)
Net Unrealized Gains (Losses) on Investment Securities Available for Sale [Member]
Changes in Accumulated Other Comprehensive Income (Loss) by Component [Roll Forward]
Beginning balance	(10,659)	(1,686)	(713)	(28,936)
Other comprehensive income (loss) before reclassifications	16,220	(11,180)	7,941	16,888
Amounts reclassified from accumulated other comprehensive income (loss)	0	0	(1,667)	(818)
Net current period other comprehensive income (loss)	16,220	(11,180)	6,274	16,070
Ending balance	5,561	(12,866)	5,561	(12,866)
Post-Retirement Unfunded Health Benefit [Member]
Changes in Accumulated Other Comprehensive Income (Loss) by Component [Roll Forward]
Beginning balance	1,023	932	932	777
Other comprehensive income (loss) before reclassifications	0	0	143	243
Amounts reclassified from accumulated other comprehensive income (loss)	(58)	0	(110)	(88)
Net current period other comprehensive income (loss)	(58)	0	33	155
Ending balance	$ 965	$ 932	$ 965	$ 932

Other Comprehensive Income (L51

Other Comprehensive Income (Loss) (Reclassifications out of Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Interest expense	$ (30,303)	$ (27,131)	$ (88,450)	$ (82,160)
Income tax (expense) benefit	(36,058)	(25,868)	(100,149)	(81,554)
Investment securities gains, net	0	0	2,710	1,331
Salaries and other personnel expense	(177,907)	(193,749)	(534,621)	(560,115)
Net income available to common shareholders	55,369	44,229	160,006	134,399
Net Unrealized Gains (Losses) on Cash Flow Hedges [Member]
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Interest expense	(112)	(112)	(336)	(336)
Income tax (expense) benefit	43	43	130	130
Net income available to common shareholders	(69)	(69)	(206)	(206)
Net Unrealized Gains (Losses) on Investment Securities Available for Sale [Member]
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Income tax (expense) benefit			(1,043)	(513)
Investment securities gains, net			2,710	1,331
Net income available to common shareholders			1,667	818
Post-Retirement Unfunded Health Benefit [Member]
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Income tax (expense) benefit	(36)	0	(68)	(56)
Salaries and other personnel expense	94	0	178	144
Net income available to common shareholders	$ 58	$ 0	$ 110	$ 88

Fair Value Accounting (Financia

Fair Value Accounting (Financial Instruments Measured At Fair Value On A Recurring Basis) (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	$ 5,844	$ 13,863
Investment securities available for sale	3,487,332	3,041,406
Mortgage-Backed Securities Issued By U.S. Government Agencies [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	210,855	179,816
Collateralized Mortgage Obligations Issued By U.S. Government Sponsored Enterprises [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	510,620	417,076
State And Municipal Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	4,546	5,206
Other Investments [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	19,673	18,687
U.S. Treasury Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	43,673	42,826
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	2,548,093	2,261,681
Equity Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	8,471	6,748
Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	0	0
Investment securities available for sale	55,235	51,609
Private equity investments	0	0
Derivative assets	0	0
Salary stock units		1,206
Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	5,844	13,863
Investment securities available for sale	3,430,566	2,988,152
Private equity investments	867	995
Derivative assets	34,555	32,117
Salary stock units		0
Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	0	0
Investment securities available for sale	1,531	1,645
Private equity investments	26,850	27,367
Derivative assets	0	0
Salary stock units		0
Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	5,844	13,863
Mortgage loans held for sale	73,623	63,328
Investment securities available for sale	3,487,332	3,041,406
Private equity investments	27,717	28,362
Mutual funds held in Rabbi Trusts	10,233	11,252
Derivative assets	34,555	32,117
Trading account liabilities	3,002
Salary stock units		1,206
Derivative liabilities	35,683	33,552
Fair Value, Measurements, Recurring [Member] | Mortgage-Backed Securities Issued By U.S. Government Agencies [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	3,141	145
Investment securities available for sale	210,855	179,816
Fair Value, Measurements, Recurring [Member] | Collateralized Mortgage Obligations Issued By U.S. Government Sponsored Enterprises [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	1,926	2,449
Investment securities available for sale	510,620	417,076
Fair Value, Measurements, Recurring [Member] | State And Municipal Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	757	1,976
Investment securities available for sale	4,546	5,206
Fair Value, Measurements, Recurring [Member] | All Other Mortgage-Backed Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities		2,483
Fair Value, Measurements, Recurring [Member] | Other Investments [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	20	6,810
Investment securities available for sale	19,673	18,687
Fair Value, Measurements, Recurring [Member] | U.S. Treasury Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	43,673	42,826
Fair Value, Measurements, Recurring [Member] | US Government Agencies Debt Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	13,801	27,324
Fair Value, Measurements, Recurring [Member] | Securities Issued By U S Government Sponsored Enterprises [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	127,600	82,042
Fair Value, Measurements, Recurring [Member] | Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	2,548,093	2,261,681
Fair Value, Measurements, Recurring [Member] | Equity Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	8,471	6,748
Fair Value, Measurements, Recurring [Member] | Mortgages [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading account liabilities		2,100
Fair Value, Measurements, Recurring [Member] | Interest Rate Contracts [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets	32,710	30,904
Derivative liabilities	33,158	31,398
Fair Value, Measurements, Recurring [Member] | Mortgage Derivatives [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets	1,845	1,213
Derivative liabilities	1,110	753
Fair Value, Measurements, Recurring [Member] | Other Derivative Contracts, Net [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative liabilities	1,415	1,401
Fair Value, Measurements, Recurring [Member] | Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	0	0
Mortgage loans held for sale	0	0
Investment securities available for sale	55,235	51,609
Private equity investments	0	0
Mutual funds held in Rabbi Trusts	10,233	11,252
Derivative assets	0	0
Trading account liabilities	0
Salary stock units		1,206
Derivative liabilities	0	0
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | Mortgage-Backed Securities Issued By U.S. Government Agencies [Member]
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 [Member] | Level 1 [Member] | Collateralized Mortgage Obligations Issued By U.S. Government Sponsored Enterprises [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	0
Investment securities available for sale	0	0
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | State And Municipal Securities [Member]
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 [Member] | Level 1 [Member] | All Other Mortgage-Backed Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities		0
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | Other Investments [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	0	0
Investment securities available for sale	3,091	2,035
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | U.S. Treasury Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	43,673	42,826
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | US Government Agencies Debt Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	0	0
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | Securities Issued By U S Government Sponsored Enterprises [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	0	0
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	0	0
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | Equity Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	8,471	6,748
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | Mortgages [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading account liabilities		0
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | Interest Rate Contracts [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets	0	0
Derivative liabilities	0	0
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | Mortgage Derivatives [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets	0	0
Derivative liabilities	0	0
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | Other Derivative Contracts, Net [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative liabilities	0	0
Fair Value, Measurements, Recurring [Member] | Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	5,844	13,863
Mortgage loans held for sale	73,623	63,328
Investment securities available for sale	3,430,566	2,988,152
Private equity investments	867	995
Mutual funds held in Rabbi Trusts	0	0
Derivative assets	34,555	32,117
Trading account liabilities	3,002
Salary stock units		0
Derivative liabilities	34,268	32,151
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Mortgage-Backed Securities Issued By U.S. Government Agencies [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	3,141	145
Investment securities available for sale	210,855	179,816
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Collateralized Mortgage Obligations Issued By U.S. Government Sponsored Enterprises [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	1,926	2,449
Investment securities available for sale	510,620	417,076
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | State And Municipal Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	757	1,976
Investment securities available for sale	4,546	5,206
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | All Other Mortgage-Backed Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities		2,483
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Other Investments [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	20	6,810
Investment securities available for sale	15,051	15,007
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | U.S. Treasury Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	0	0
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | US Government Agencies Debt Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	13,801	27,324
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Securities Issued By U S Government Sponsored Enterprises [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	127,600	82,042
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	2,548,093	2,261,681
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Equity Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	0	0
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Mortgages [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading account liabilities		2,100
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Interest Rate Contracts [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets	32,710	30,904
Derivative liabilities	33,158	31,398
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Mortgage Derivatives [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets	1,845	1,213
Derivative liabilities	1,110	753
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Other Derivative Contracts, Net [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative liabilities	0	0
Fair Value, Measurements, Recurring [Member] | Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	0	0
Mortgage loans held for sale	0	0
Investment securities available for sale	1,531	1,645
Private equity investments	26,850	27,367
Mutual funds held in Rabbi Trusts	0	0
Derivative assets	0	0
Trading account liabilities	0
Salary stock units		0
Derivative liabilities	1,415	1,401
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Mortgage-Backed Securities Issued By U.S. Government Agencies [Member]
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 [Member] | Level 3 [Member] | Collateralized Mortgage Obligations Issued By U.S. Government Sponsored Enterprises [Member]
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 [Member] | Level 3 [Member] | State And Municipal Securities [Member]
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 [Member] | Level 3 [Member] | All Other Mortgage-Backed Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities		0
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Other Investments [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	0	0
Investment securities available for sale	1,531	1,645
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | U.S. Treasury Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	0	0
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | US Government Agencies Debt Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	0	0
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Securities Issued By U S Government Sponsored Enterprises [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	0	0
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	0	0
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Equity Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities available for sale	0	0
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Mortgages [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading account liabilities		0
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Interest Rate Contracts [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets	0	0
Derivative liabilities	0	0
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Mortgage Derivatives [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets	0	0
Derivative liabilities	0	0
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Other Derivative Contracts, Net [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative liabilities	$ 1,415	$ 1,401

Fair Value Accounting (Changes

Fair Value Accounting (Changes In Fair Value Included In Consolidated Statements Of Income) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Fair Value Disclosures [Abstract]
Mortgage loans held for sale	$ 1,012	$ (813)	$ 450	$ 969
Aggregate fair value	73,623		73,623		$ 63,328
Unpaid principal balance	71,333		71,333		61,488
Fair value less aggregate unpaid principal balance	$ 2,290		$ 2,290		$ 1,840

Fair Value Accounting (Change54

Fair Value Accounting (Changes In Level 3 Fair Value Measurements) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Investment Securities Available for Sale [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	$ 1,700	$ 1,866	$ 1,645	$ 2,350
Included in earnings	0	0	0	(88)
Unrealized gains (losses) included in other comprehensive income	(169)	(81)	(114)	63
Purchases	0	0	0	0
Sales	0	0	0	0
Issuances	0	0	0	0
Settlements	0	0	0	(540)
Amortization of discount/premium	0	0	0	0
Transfers in and/or out of Level 3	0	0	0	0
Ending balance	1,531	1,785	1,531	1,785
Total net gains (losses) for the period included in earnings attributable to the change in unrealized gains (losses) relating to assets still held at September 30,	0	0	0	(88)
Private Equity Investments [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	26,959	27,376	27,367	27,745
Included in earnings	(109)	(144)	(517)	(513)
Unrealized gains (losses) included in other comprehensive income	0	0	0	0
Purchases	0	0	0	0
Sales	0	0	0	0
Issuances	0	0	0	0
Settlements	0	0	0	0
Amortization of discount/premium	0	0	0	0
Transfers in and/or out of Level 3	0	0	0	0
Ending balance	26,850	27,232	26,850	27,232
Total net gains (losses) for the period included in earnings attributable to the change in unrealized gains (losses) relating to assets still held at September 30,	(109)	(144)	(517)	(513)
Visa Derivative [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	(1,415)	(2,438)	(1,401)
Included in earnings	(363)	(1,979)	(1,092)
Unrealized gains (losses) included in other comprehensive income	0	0	0
Purchases	0	0	0
Sales	0	0	0
Issuances	0	0	0
Settlements	363	396	1,078
Amortization of discount/premium	0	0	0
Transfers in and/or out of Level 3	0	0	0
Ending balance	(1,415)	(4,021)	(1,415)	(4,021)
Total net gains (losses) for the period included in earnings attributable to the change in unrealized gains (losses) relating to assets still held at September 30,	$ (363)	(1,979)	$ (1,092)
Other Derivative Contracts, Net [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance				(2,706)
Included in earnings				(2,731)
Unrealized gains (losses) included in other comprehensive income				0
Purchases				0
Sales				0
Issuances				0
Settlements				1,416
Amortization of discount/premium				0
Transfers in and/or out of Level 3				0
Ending balance		$ (4,021)		(4,021)
Total net gains (losses) for the period included in earnings attributable to the change in unrealized gains (losses) relating to assets still held at September 30,				$ (2,731)

Fair Value Accounting (Assets A

Fair Value Accounting (Assets And Liabilities Measured At Fair Value On A Non-Recurring Basis) (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans	$ 309,344	$ 442,148
Other real estate	64,346	85,472
Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other loans held for sale		0
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other loans held for sale		0
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other loans held for sale		3,606
Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans	12,430	28,588
Other loans held for sale	0	3,411
Other real estate	23,457	32,046
Other assets held for sale	1,844	3,718
Fair Value, Measurements, Nonrecurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent 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 [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent 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 [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans	12,430	28,588
Other loans held for sale	0	3,411
Other real estate	23,457	32,046
Other assets held for sale	$ 1,844	$ 3,718

Fair Value Accounting (Assets M

Fair Value Accounting (Assets Measured at Fair Value on Nonrecurring Basis) (Details) - Fair Value, Measurements, Nonrecurring [Member] - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Impaired Loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value adjustment	$ 1,789	$ 9,380	$ 3,549	$ 20,661
Other Loans Held for Sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value adjustment	0	285	0	285
Other Real Estate [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value adjustment	2,645	4,114	7,405	7,343
Other Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value adjustment	$ 1,043	$ 100	$ 1,043	$ 7,608

Fair Value Accounting (Fair Val

Fair Value Accounting (Fair Value Inputs, Assets, Quantitative Information) (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Fair Value, Measurements, Recurring [Member] | Trust Preferred Securities [Member] | Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Credit spread embedded in discount rate		6.00%
Discount for lack of marketability	0.00%	0.00%
Fair Value, Measurements, Recurring [Member] | Trust Preferred Securities [Member] | Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Credit spread embedded in discount rate		6.75%
Discount for lack of marketability	10.00%	10.00%
Fair Value, Measurements, Recurring [Member] | Trust Preferred Securities [Member] | Weighted Average [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Credit spread embedded in discount rate		6.39%
Discount for lack of marketability	0.00%	0.00%
Fair Value, Measurements, Recurring [Member] | Trust Preferred Securities [Member] | Discounted Cash Flow [Member] | Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Credit spread embedded in discount rate	5.49%
Fair Value, Measurements, Recurring [Member] | Trust Preferred Securities [Member] | Discounted Cash Flow [Member] | Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Credit spread embedded in discount rate	6.49%
Fair Value, Measurements, Recurring [Member] | Trust Preferred Securities [Member] | Discounted Cash Flow [Member] | Weighted Average [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Credit spread embedded in discount rate	5.99%
Fair Value, Measurements, Recurring [Member] | Collateral Dependent Impaired Loans [Member] | Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount to appraised value		0.00%
Estimated selling costs		0.00%
Fair Value, Measurements, Recurring [Member] | Collateral Dependent Impaired Loans [Member] | Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount to appraised value		100.00%
Estimated selling costs		10.00%
Fair Value, Measurements, Recurring [Member] | Collateral Dependent Impaired Loans [Member] | Weighted Average [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount to appraised value		46.00%
Estimated selling costs		7.00%
Fair Value, Measurements, Recurring [Member] | Collateral Dependent Impaired Loans [Member] | Third Party Appraised value of Collateral Less Estimated Selling Costs [Member] | Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount to appraised value	0.00%
Estimated selling costs	0.00%
Fair Value, Measurements, Recurring [Member] | Collateral Dependent Impaired Loans [Member] | Third Party Appraised value of Collateral Less Estimated Selling Costs [Member] | Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount to appraised value	100.00%
Estimated selling costs	10.00%
Fair Value, Measurements, Recurring [Member] | Collateral Dependent Impaired Loans [Member] | Third Party Appraised value of Collateral Less Estimated Selling Costs [Member] | Weighted Average [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount to appraised value	44.00%
Estimated selling costs	7.00%
Fair Value, Measurements, Recurring [Member] | Other Loans Held for Sale [Member] | Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount to appraised value		0.00%
Estimated selling costs		0.00%
Fair Value, Measurements, Recurring [Member] | Other Loans Held for Sale [Member] | Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount to appraised value		11.00%
Estimated selling costs		10.00%
Fair Value, Measurements, Recurring [Member] | Other Loans Held for Sale [Member] | Weighted Average [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount to appraised value		7.00%
Estimated selling costs		7.00%
Fair Value, Measurements, Recurring [Member] | Other Real Estate [Member] | Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount to appraised value		0.00%
Estimated selling costs		0.00%
Fair Value, Measurements, Recurring [Member] | Other Real Estate [Member] | Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount to appraised value		61.00%
Estimated selling costs		10.00%
Fair Value, Measurements, Recurring [Member] | Other Real Estate [Member] | Weighted Average [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount to appraised value		16.00%
Estimated selling costs		7.00%
Fair Value, Measurements, Recurring [Member] | Other Real Estate [Member] | Third Party Appraised value of Collateral Less Estimated Selling Costs [Member] | Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount to appraised value	0.00%
Estimated selling costs	0.00%
Fair Value, Measurements, Recurring [Member] | Other Real Estate [Member] | Third Party Appraised value of Collateral Less Estimated Selling Costs [Member] | Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount to appraised value	25.00%
Estimated selling costs	10.00%
Fair Value, Measurements, Recurring [Member] | Other Real Estate [Member] | Third Party Appraised value of Collateral Less Estimated Selling Costs [Member] | Weighted Average [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount to appraised value	8.00%
Estimated selling costs	7.00%
Fair Value, Measurements, Recurring [Member] | Other Assets Held for Sale [Member] | Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount to appraised value		5.00%
Estimated selling costs		0.00%
Fair Value, Measurements, Recurring [Member] | Other Assets Held for Sale [Member] | Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount to appraised value		100.00%
Estimated selling costs		10.00%
Fair Value, Measurements, Recurring [Member] | Other Assets Held for Sale [Member] | Weighted Average [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount to appraised value		49.00%
Estimated selling costs		7.00%
Fair Value, Measurements, Recurring [Member] | Other Assets Held for Sale [Member] | Third Party Appraised value of Collateral Less Estimated Selling Costs or BOV [Member] | Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount to appraised value	0.00%
Estimated selling costs	0.00%
Fair Value, Measurements, Recurring [Member] | Other Assets Held for Sale [Member] | Third Party Appraised value of Collateral Less Estimated Selling Costs or BOV [Member] | Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount to appraised value	100.00%
Estimated selling costs	10.00%
Fair Value, Measurements, Recurring [Member] | Other Assets Held for Sale [Member] | Third Party Appraised value of Collateral Less Estimated Selling Costs or BOV [Member] | Weighted Average [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount to appraised value	55.00%
Estimated selling costs	7.00%
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Trust Preferred Securities [Member] | Discounted Cash Flow [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets, Fair Value Disclosure	$ 1,531	$ 1,645
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Private Equity Investments [Member] | Individual Analysis of Each Investment [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets, Fair Value Disclosure	26,850
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Private Equity Investments [Member] | Individual Analysis of Each Investee Company [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets, Fair Value Disclosure		27,367
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Visa Derivative [Member] | Probability Model [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets, Fair Value Disclosure	1,415	1,401
Fair Value, Measurements, Nonrecurring [Member] | Level 3 [Member] | Collateral Dependent Impaired Loans [Member] | Third Party Appraised value of Collateral Less Estimated Selling Costs [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets, Fair Value Disclosure	12,430	28,588
Fair Value, Measurements, Nonrecurring [Member] | Level 3 [Member] | Other Loans Held for Sale [Member] | Third Party Appraised value of Collateral Less Estimated Selling Costs [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets, Fair Value Disclosure		3,411
Fair Value, Measurements, Nonrecurring [Member] | Level 3 [Member] | Other Real Estate [Member] | Third Party Appraised value of Collateral Less Estimated Selling Costs [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets, Fair Value Disclosure	23,457	32,046
Fair Value, Measurements, Nonrecurring [Member] | Level 3 [Member] | Other Assets Held for Sale [Member] | Third Party Appraised value of Collateral Less Estimated Selling Costs or BOV [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets, Fair Value Disclosure	$ 1,844	$ 3,718

Fair Value Accounting (Carrying

Fair Value Accounting (Carrying And Estimated Fair Values Of Financial Instruments Carried On Balance Sheet) (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	$ 329,396	$ 485,489
Interest bearing funds with Federal Reserve Bank	837,641	721,362
Interest earning deposits with banks	21,170	11,810
Federal funds sold and securities purchased under resale agreements	69,732	73,111
Trading account assets	5,844	13,863
Mortgage loans held for sale	73,623	63,328
Investment securities available for sale	3,487,332	3,041,406
Loans, net	21,613,409	20,836,382
Non-interest bearing deposits	6,570,227	6,228,472
Federal funds purchased and securities sold under repurchase agreements	135,475	126,916
Long-term debt	2,038,719	2,140,319
Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	329,396	485,489
Interest bearing funds with Federal Reserve Bank	837,641	721,362
Interest earning deposits with banks	21,170	11,810
Federal funds sold and securities purchased under resale agreements	69,732	73,111
Trading account assets	0	0
Mortgage loans held for sale	0	0
Other loans held for sale		0
Investment securities available for sale	55,235	51,609
Private equity investments	0	0
Mutual funds held in Rabbi Trusts	10,233	11,252
Loans, net	0	0
Derivative asset positions	0	0
Trading account liabilities	0	0
Non-interest bearing deposits	0	0
Interest bearing deposits	0	0
Federal funds purchased and securities sold under repurchase agreements	135,475	126,916
Salary stock units		1,206
Long-term debt	0	0
Derivative liability positions	0	0
Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	0	0
Interest bearing funds with Federal Reserve Bank	0	0
Interest earning deposits with banks	0	0
Federal funds sold and securities purchased under resale agreements	0	0
Trading account assets	5,844	13,863
Mortgage loans held for sale	73,623	63,328
Other loans held for sale		0
Investment securities available for sale	3,430,566	2,988,152
Private equity investments	867	995
Mutual funds held in Rabbi Trusts	0	0
Loans, net	0	0
Derivative asset positions	34,555	32,117
Trading account liabilities	3,002	2,100
Non-interest bearing deposits	6,570,227	6,228,472
Interest bearing deposits	16,218,720	15,299,372
Federal funds purchased and securities sold under repurchase agreements	0	0
Salary stock units		0
Long-term debt	2,098,864	2,191,279
Derivative liability positions	34,268	32,151
Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	0	0
Interest bearing funds with Federal Reserve Bank	0	0
Interest earning deposits with banks	0	0
Federal funds sold and securities purchased under resale agreements	0	0
Trading account assets	0	0
Mortgage loans held for sale	0	0
Other loans held for sale		3,606
Investment securities available for sale	1,531	1,645
Private equity investments	26,850	27,367
Mutual funds held in Rabbi Trusts	0	0
Loans, net	21,677,842	20,872,939
Derivative asset positions	0	0
Trading account liabilities	0	0
Non-interest bearing deposits	0	0
Interest bearing deposits	0	0
Federal funds purchased and securities sold under repurchase agreements	0	0
Salary stock units		0
Long-term debt	0	0
Derivative liability positions	1,415	1,401
Carrying Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	329,396	485,489
Interest bearing funds with Federal Reserve Bank	837,641	721,362
Interest earning deposits with banks	21,170	11,810
Federal funds sold and securities purchased under resale agreements	69,732	73,111
Trading account assets	5,844	13,863
Mortgage loans held for sale	73,623	63,328
Other loans held for sale		3,606
Investment securities available for sale	3,487,332	3,041,406
Private equity investments	27,717	28,362
Mutual funds held in Rabbi Trusts	10,233	11,252
Loans, net	21,864,309	21,097,699
Derivative asset positions	34,555	32,117
Trading account liabilities	3,002	2,100
Non-interest bearing deposits	6,570,227	6,228,472
Interest bearing deposits	16,207,186	15,303,228
Federal funds purchased and securities sold under repurchase agreements	135,475	126,916
Salary stock units		1,206
Long-term debt	2,038,719	2,140,319
Derivative liability positions	35,683	33,553
Estimated Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	329,396	485,489
Interest bearing funds with Federal Reserve Bank	837,641	721,362
Interest earning deposits with banks	21,170	11,810
Federal funds sold and securities purchased under resale agreements	69,732	73,111
Trading account assets	5,844	13,863
Mortgage loans held for sale	73,623	63,328
Other loans held for sale		3,606
Investment securities available for sale	3,487,332	3,041,406
Private equity investments	27,717	28,362
Mutual funds held in Rabbi Trusts	10,233	11,252
Loans, net	21,677,842	20,872,939
Derivative asset positions	34,555	32,117
Trading account liabilities	3,002	2,100
Non-interest bearing deposits	6,570,227	6,228,472
Interest bearing deposits	16,218,720	15,299,372
Federal funds purchased and securities sold under repurchase agreements	135,475	126,916
Salary stock units		1,206
Long-term debt	2,098,864	2,191,279
Derivative liability positions	$ 35,683	$ 33,553

Derivative Instruments (Narrati

Derivative Instruments (Narrative) (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Derivative [Line Items]
Cash flow hedge gain (loss) to be reclassified within 12 months	$ (447)
Remaining unamortized deferred gain (loss) balance of all previously terminated cash flow hedges	(782)		$ (1,100)
Remaining deferred gain (loss) balance on all previously terminated fair value hedges	5,300		7,600
Deferred gain balance on terminated fair value hedges expected to be reclassified from long-term debt	3,100
Derivative, fair value	1,400
Gain (loss) on sale of outstanding commitments	(356)	$ (1,200)
Deferred gains (loss) on discontinuation of cash flow hedge reclassified to earnings	2,300	1,500
Fixed Rate Residential Mortgage [Member]
Derivative [Line Items]
Commitments to fund fixed-rate mortgage loans	93,200		73,400
Unrealized gain on fair value of fixed-rate mortgage loans to customers	632	$ 531
Sale of outstanding commitments	111,500		113,000
Interest Rate Swap [Member] | Customer Related Interest Rate Risk [Member]
Derivative [Line Items]
Notional amount of interest rate swap contracts	1,190,000		$ 103,700
Federal Funds Sold [Member]
Derivative [Line Items]
Federal funds sold	68,400
Federal Funds Sold, Counterparty with CCC [Member]
Derivative [Line Items]
Federal funds sold	$ 12,600

Derivative Instruments (Impact

Derivative Instruments (Impact Of Derivatives On Balance Sheet) (Details) - Not Designated As Hedging Instruments [Member] - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Other Assets [Member]
Derivative [Line Items]
Fair value of derivative assets	$ 34,555	$ 32,117
Other Assets [Member] | Interest Rate Contracts [Member]
Derivative [Line Items]
Fair value of derivative assets	32,710	30,904
Other Assets [Member] | Mortgage Derivatives [Member]
Derivative [Line Items]
Fair value of derivative assets	1,845	1,213
Other Assets [Member] | Visa Derivative[Member]
Derivative [Line Items]
Fair value of derivative assets	0	0
Other Liabilities [Member]
Derivative [Line Items]
Fair value of derivative liabilities	35,683	33,552
Other Liabilities [Member] | Interest Rate Contracts [Member]
Derivative [Line Items]
Fair value of derivative liabilities	33,158	31,398
Other Liabilities [Member] | Mortgage Derivatives [Member]
Derivative [Line Items]
Fair value of derivative liabilities	1,110	753
Other Liabilities [Member] | Visa Derivative[Member]
Derivative [Line Items]
Fair value of derivative liabilities	$ 1,415	$ 1,401

Derivative Instruments (Effect

Derivative Instruments (Effect Of Fair Value Hedges On Consolidated Statements Of Income) (Details) - Not Designated As Hedging Instruments [Member] - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Derivative [Line Items]
Amount of Gain (Loss) Recognized in Income on Derivative	$ (1,785)	$ 116	$ 286	$ (255)
Other Non-Interest Income [Member] | Interest Rate Contracts [Member]
Derivative [Line Items]
Amount of Gain (Loss) Recognized in Income on Derivative	170	65	10	449
Mortgage Banking Income [Member] | Mortgage Derivatives [Member]
Derivative [Line Items]
Amount of Gain (Loss) Recognized in Income on Derivative	$ (1,955)	$ 51	$ 276	$ (704)

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		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Basic Earnings (Loss) Per Share
Net income available to common shareholders	$ 55,369	$ 44,229	$ 160,006	$ 134,399
Weighted average common shares outstanding	131,516	139,043	133,120	138,989
Net income per common share, basic	$ 0.42	$ 0.32	$ 1.20	$ 0.97
Diluted Earnings (Loss) Per Share
Net income available to common shareholders	$ 55,369	$ 44,229	$ 160,006	$ 134,399
Weighted average common shares outstanding	131,516	139,043	133,120	138,989
Potentially dilutive shares from assumed exercise of securities or other contracts to purchase common stock	781	683	756	611
Weighted average number of diluted common shares	132,297	139,726	133,876	139,600
Net income per common share, diluted	$ 0.42	$ 0.32	$ 1.20	$ 0.96

Net Income Per Common Share (Na

Net Income Per Common Share (Narrative) (Details) - shares shares in Millions	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Earnings Per Share [Abstract]
Potentially dilutive shares	2.7	3.2

Share-based Compensation (Detai

Share-based Compensation (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	$ 3.2	$ 2.8	$ 9.5	$ 7.5
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Other equity compensation, shares granted			0
Options outstanding	1,800,000		1,800,000
Weighted-average exercise price, options	$ 37.36		$ 37.36
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)			3 years
Other equity compensation, shares granted			320,000
Weighted-average exercise price, shares granted during period			$ 28.30
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Other equity compensation, shares granted			82,000
Market Restricted Stock Units (MRSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Other equity compensation, shares granted			82,000
Non-Vested Synovus Shares And Restricted Share Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Other equity compensation, non-vested shares outstanding	1,100,000		1,100,000
Weighted-average exercise price, non-vested shares outstanding	$ 24.92		$ 24.92
Minimum [Member] | Performance Share Units (PSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range based on return on average assets (ROAA)	0.00%		0.00%
Minimum [Member] | Market Restricted Stock Units (MRSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range based on shareholder return	75.00%		75.00%
Maximum [Member] | Performance Share Units (PSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range based on return on average assets (ROAA)	150.00%		150.00%
Maximum [Member] | Market Restricted Stock Units (MRSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range based on shareholder return	125.00%		125.00%
2013 Omnibus Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equivalents authorized	7,100,000		7,100,000
Shares of authorized but unissued common stock reserved for future grants	8,600,000		8,600,000
Contractual term (years)			10 years
2013 Omnibus Plan [Member] | Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share equivalents ratio	1		1
2013 Omnibus Plan [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)			3 years
2013 Omnibus Plan [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)			5 years

Legal Proceedings (Details)

Legal Proceedings (Details)	Sep. 30, 2015USD ($)
Legal Proceedings Disclosure [Abstract]
Aggregate range of reasonably possible losses, minimum	$ 0
Aggregate range of reasonably possible losses, maximum	$ 15,000,000