Zions Bancorporation, National Association (ZION) 10-Q 8 May 14 2014 Q1 Quarterly report Financial data

Document_And_Entity_Informatio

Document And Entity Information	3 Months Ended
	Mar. 31, 2014	Apr. 30, 2014
Document And Entity Information [Abstract]	'	'
Document Type	'10-Q	'
Amendment Flag	'false	'
Document Period End Date	31-Mar-14	'
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'Q1	'
Trading Symbol	'zion	'
Entity Registrant Name	'ZIONS BANCORPORATION /UT/	'
Entity Central Index Key	'0000109380	'
Current Fiscal Year End Date	'--12-31	'
Entity Filer Category	'Large Accelerated Filer	'
Entity Common Stock, Shares Outstanding	'	184,895,233

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
ASSETS	'	'
Cash and due from banks	$1,341,319	$1,175,083
Money market investments:	'	'
Interest-bearing deposits	8,157,837	8,175,048
Federal funds sold and security resell agreements	379,947	282,248
Investment securities:	'	'
Held-to-maturity, at adjusted cost (approximate fair value $635,379 and $609,547)	606,279	588,981
Available-for-sale, at fair value	3,423,205	3,701,886
Trading account, at fair value	56,172	34,559
Marketable securities, total	4,085,656	4,325,426
Loans held for sale	126,344	171,328
Loans, net of unearned income and fees:	'	'
Loans and Leases Receivable, Net of Deferred Income	39,198,136	39,043,365
Less allowance for loan losses	736,953	746,291
Loans and Leases Receivable, Net Reported Amount, Covered and Not Covered	38,461,183	38,297,074
Other noninterest-bearing investments	848,775	855,642
Premises and equipment, net	785,519	726,372
Goodwill	1,014,129	1,014,129
Core deposit and other intangibles	33,562	36,444
Other real estate owned	39,248	46,105
Other assets	807,325	926,228
Total assets	56,080,844	56,031,127
LIABILITIES AND SHAREHOLDERS' EQUITY	'	'
Noninterest-bearing demand	19,257,889	18,758,753
Interest-bearing:	'	'
Savings and money market	23,097,351	23,029,928
Time	2,528,735	2,593,038
Foreign	1,648,111	1,980,161
Total deposits	46,532,086	46,361,880
Federal funds purchased and security repurchase agreements	279,837	340,348
Long-term debt	2,158,701	2,273,575
Reserve for unfunded lending commitments	88,693	89,705
Other liabilities	435,311	501,056
Total liabilities	49,494,628	49,566,564
Shareholders' equity:	'	'
Preferred stock, without par value, authorized 4,400,000 shares	1,003,970	1,003,970
Common stock, without par value; authorized 350,000,000 shares; issued and outstanding 184,895,182 and 184,677,696 shares	4,185,513	4,179,024
Retained earnings	1,542,195	1,473,670
Accumulated other comprehensive income (loss)	-145,462	-192,101
Total shareholders' equity	6,586,216	6,464,563
Total liabilities and shareholders' equity	$56,080,844	$56,031,127

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, except Share data, unless otherwise specified
Statement of Financial Position [Abstract]	'	'
Held-to-maturity, fair value	$635,379	$609,547
Preferred stock, authorized shares	4,400,000	4,400,000
Common stock, authorized shares	350,000,000	350,000,000
Common stock, issued shares	184,895,182	184,677,696
Common stock, outstanding shares	184,895,182	184,677,696

Consolidated_Statements_Of_Inc

Consolidated Statements Of Income (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Document Fiscal Year Focus	'2014	'
Interest income:	'	'
Interest and fees on loans	$434,344	$453,433
Interest on money market investments	5,130	5,439
Investment Income, Interest	28,094	25,876
Interest expense:	'	'
Interest on deposits	12,779	15,642
Interest Expense, Debt	38,324	50,991
Total interest expense	51,103	66,633
Net interest income	416,465	418,115
Provision for loan losses	-610	-29,035
Net interest income after provision for loan losses	417,075	447,150
Noninterest income:	'	'
Service charges and fees on deposit accounts	42,594	43,580
Other service charges, commissions and fees	43,519	42,731
Trust and wealth management income	7,077	6,994
Capital markets and foreign exchange	5,000	7,486
Dividends and other investment income	7,864	12,724
Loan sales and servicing income	6,474	10,951
Fair value and nonhedge derivative loss	-8,539	-5,445
Equity securities gains, net	912	2,832
Fixed income securities gains, net	30,914	3,299
Impairment losses on investment securities:	'	'
Impairment losses on investment securities	-27	-31,493
Non-credit losses on secutities not expectd to be sold (recognized in other comprehensive income	0	21,376
Net impairment losses on investment securities	-27	-10,117
Other noninterest income	2,531	6,184
Total noninterest income	138,319	121,219
Noninterest expense:	'	'
Salaries and employee benefits	233,406	229,789
Occupancy, net	28,305	27,389
Equipment, software and furniture	27,944	26,074
Gains (Losses) on Sales of Other Real Estate	1,607	1,977
Credit-related expense	6,906	10,482
Provision for unfunded lending commitments	-1,012	-6,354
Professional and legal services	10,995	10,471
Advertising	6,398	5,893
FDIC premiums	7,922	9,711
Amortization of core deposit and other intangibles	2,882	3,819
Other	72,710	78,097
Total noninterest expense	398,063	397,348
Income before income taxes	157,331	171,021
Income taxes	56,121	60,634
Net income	101,210	110,387
Net loss applicable to noncontrolling interests	0	-336
Net income applicable to controlling interest	101,210	110,723
Preferred stock dividends	-25,020	-22,399
Net earnings applicable to common shareholders	76,190	88,324
Weighted average common shares outstanding during the period:	'	'
Basic shares	184,440	183,396
Diluted shares	185,123	183,655
Net earnings per common share:	'	'
Basic	$0.41	$0.48
Diluted	$0.41	$0.48
Interest and Dividend Income, Operating	$467,568	$484,748

Consolidated_Statements_Of_Com

Consolidated Statements Of Comprehensive Income (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Net income	$101,210	$110,387
Other comprehensive income (loss), net of tax:	'	'
Unrealized holding gains (losses) on investment securities	71,066	48,796
Noncredit-related impairment losses on securities not expected to be sold	0	-12,754
Reclassification to earnings for realized net fixed income securities losses	-24,840	-2,037
Reclassification to earnings for net credit-related impairment losses on investment securities	17	5,999
Accretion of securities with noncredit-related impairment losses not expected to be sold	286	209
Net unrealized holding gains (losses) on derivative instruments	320	-2
Reclassification adjustment for increase in interest income recognized in earnings on derivatives instruments	-210	-957
Other comprehensive income (loss)	46,639	39,254
Comprehensive income	147,849	149,641
Comprehensive loss applicable to noncontrolling interests	0	-336
Comprehensive income applicable to controlling interest	$147,849	$149,977

Consolidated_Statements_Of_Cha

Consolidated Statements Of Changes In Shareholders' Equity (USD $)	Total	Preferred Stock [Member]	Common Stock [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Noncontrolling Interests [Member]
In Thousands, except Share data, unless otherwise specified
Balance at Dec. 31, 2012	$6,048,641	$1,128,302	$4,166,109	$1,203,815	($446,157)	($3,428)
Balance (in shares) at Dec. 31, 2012	'	'	184,199,198	'	'	'
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'	'	'	'	'
Net income (loss) for the period	110,387	'	'	110,723	'	-336
Other comprehensive income	39,254	'	'	'	39,254	'
Stock Issued During Period, Value, New Issues	168,751	171,827	3,076	'	'	'
Subordinated debt converted to preferred stock	991	1,160	-169	'	'	'
Net activity under employee plans and related tax benefits, shares	'	'	47,273	'	'	'
Net activity under employee plans and related tax benefits	7,438	'	7,438	'	'	'
Dividends on preferred stock	-22,399	'	'	-22,399	'	'
Dividends on common stock	-1,833	'	'	-1,833	'	'
Change in deferred compensation	-175	'	'	-175	'	'
Other changes in noncontrolling interests	-402	'	586	'	'	-988
Balance at Mar. 31, 2013	6,350,653	1,301,289	4,170,888	1,290,131	-406,903	-4,752
Balance (in shares) at Mar. 31, 2013	'	'	184,246,471	'	'	'
Balance at Dec. 31, 2013	6,464,563	1,003,970	4,179,024	1,473,670	-192,101	0
Balance (in shares) at Dec. 31, 2013	184,677,696	'	184,677,696	'	'	'
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'	'	'	'	'
Net income (loss) for the period	101,210	'	'	101,210	'	0
Other comprehensive income	46,639	'	'	'	46,639	'
Subordinated debt converted to preferred stock	0	'	'	'	'	'
Net activity under employee plans and related tax benefits, shares	'	'	217,486	'	'	'
Net activity under employee plans and related tax benefits	6,489	'	6,489	'	'	'
Dividends on preferred stock	-25,020	'	'	-25,020	'	'
Dividends on common stock	-7,436	'	'	-7,436	'	'
Change in deferred compensation	-229	'	'	-229	'	'
Balance at Mar. 31, 2014	$6,586,216	$1,003,970	$4,185,513	$1,542,195	($145,462)	$0
Balance (in shares) at Mar. 31, 2014	184,895,182	'	184,895,182	'	'	'

Consolidated_Statements_Of_Cha1

Consolidated Statements Of Changes In Shareholders' Equity (Parenthetical) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Dividends on common stock, per share	$0.04	$0.01

Consolidated_Statements_Of_Cas

Consolidated Statements Of Cash Flows (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Document Fiscal Year Focus	'2014	'
CASH FLOWS FROM OPERATING ACTIVITIES	'	'
Net income for the period	$101,210	$110,387
Adjustments to reconcile net income to net cash provided by operating activities:	'	'
Net impairment losses on investment securities	27	10,117
Provision for credit losses	-1,622	-35,389
Depreciation and amortization	32,404	38,258
Fixed income securities gains (losses), net	-30,914	-3,299
Deferred income tax expense (benefit)	78,278	1,282
Net decrease (increase) in trading securities	-21,862	-11
Net decrease (increase) in loans held for sale	41,195	89,996
Change in other liabilities	-77,580	-48,477
Change in other assets	3,086	51,580
Other, net	2,336	-12,153
Net cash provided by operating activities	126,558	202,291
CASH FLOWS FROM INVESTING ACTIVITIES	'	'
Net decrease (increase) in money market investments	-80,488	628,887
Proceeds from maturities and paydowns of investment securities held-to-maturity	18,935	53,612
Purchases of investment securities held-to-maturity	-35,750	-45,800
Proceeds from sales, maturities, and paydowns of investment securities available-for-sale	847,288	359,223
Purchases of investment securities available-for-sale	-452,123	-486,975
Proceeds from sales of loans and leases	6,142	6,011
Net loan and lease originations	-168,628	-126,862
Net purchases of premises and equipment	-76,916	-15,800
Proceeds from sales of other real estate owned	11,825	27,974
Payments for (Proceeds from) Other Investing Activities	5,617	7,388
Net cash provided by (used in) investing activities	75,902	407,658
CASH FLOWS FROM FINANCING ACTIVITIES	'	'
Net increase (decrease) in deposits	170,206	-1,642,878
Net change in short-term funds borrowed	-60,511	-25,853
Proceeds from issuance of long-term debt	0	19,362
Repayments of long-term debt	-124,755	-18,398
Proceeds from issuances of common and preferred stock	2,880	169,399
Dividends paid on common and preferred stock	-23,741	-24,232
Other, net	-303	-439
Net cash provided by (used in) financing activities	-36,224	-1,523,039
Net increase (decrease) in cash and due from banks	166,236	-913,090
Cash and due from banks at beginning of period	1,175,083	1,841,907
Cash and due from banks at end of period	1,341,319	928,817
Cash paid for interest	40,849	62,131
Net cash paid for income taxes	($81)	$3,565

Basis_of_Presentaion

Basis of Presentaion	3 Months Ended
	Mar. 31, 2014
Basis Of Presentation [Abstract]	'
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]	'
	BASIS OF PRESENTATION
	The accompanying unaudited consolidated financial statements of Zions Bancorporation (“the Parent”) and its majority-owned subsidiaries (collectively “the Company,” “Zions,” “we,” “our,” “us”) have been prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation have been included. References to GAAP, including standards promulgated by the Financial Accounting Standards Board (“FASB”), are made according to sections of the Accounting Standards Codification (“ASC”) and to Accounting Standards Updates (“ASU”), which include consensus issues of the Emerging Issues Task Force (“EITF”). Certain prior period amounts have been reclassified to conform with the current period presentation.
	Operating results for the three months ended March 31, 2014 and 2013 are not necessarily indicative of the results that may be expected in future periods. The consolidated balance sheet at December 31, 2013 is from the audited financial statements at that date, but does not include all of the information and footnotes required by GAAP for complete financial statements. For further information, refer to the consolidated financial statements and footnotes thereto included in the Company’s 2013 Annual Report on Form 10-K.
	The Company provides a full range of banking and related services through subsidiary banks in 10 Western and Southwestern states as follows: Zions First National Bank (“Zions Bank”), in Utah and Idaho; California Bank & Trust (“CB&T”); Amegy Corporation (“Amegy”) and its subsidiary, Amegy Bank, in Texas; National Bank of Arizona (“NBAZ”); Nevada State Bank (“NSB”); Vectra Bank Colorado (“Vectra”), in Colorado and New Mexico; The Commerce Bank of Washington (“TCBW”); and The Commerce Bank of Oregon (“TCBO”). The Parent and its subsidiary banks also own and operate certain nonbank subsidiaries that engage in financial services.

Certain_Recent_Accounting_Pron

Certain Recent Accounting Pronouncements (Notes)	3 Months Ended
	Mar. 31, 2014
Certain Recent Accounting Pronouncements [Abstract]	'
Certain Recent Accounting Pronouncements [Text Block]	'
	2	CERTAIN RECENT ACCOUNTING PRONOUNCEMENTS
	In January 2014, the FASB issued ASU 2014-04, Reclassification of Residential Real Estate Collateralized Consumer Mortgage Loans upon Foreclosure. This new guidance under ASU 310-40, Receivables – Troubled Debt Restructurings by Creditors, clarifies that a creditor should be considered to have physical possession of a residential real estate property collateralizing a residential mortgage loan and thus would reclassify the loan to other real estate owned when certain conditions are satisfied. The new amendments will require additional financial statement disclosures and may be applied on either a prospective or a modified retrospective basis, with early adoption permitted. For public companies, adoption is required for interim or annual periods beginning after December 15, 2014. Management is currently evaluating the impact this new guidance may have on its financial statement disclosures.
	In January 2014, the FASB issued ASU 2014-01, Accounting for Investments in Qualified Affordable Housing Projects. This new accounting guidance under ASC 323, Investments – Equity Method and Joint Ventures, revised the conditions that an entity must meet to elect to use the effective yield method when accounting for qualified affordable housing project investments. The final consensus of the EITF changed the method of amortizing a Low Income Housing Tax Credit (“LIHTC”) investment from the effective yield method to a proportional amortization method. The amortization would be proportional to the tax credits and tax benefits received but, under a practical expedient that would be available in certain circumstances, amortization could be proportional to only the tax credits. Reporting entities that invest in LIHTC investments through a limited liability entity could elect the proportional amortization method if certain conditions are met. The guidance would not extend to other types of tax credit investments. The final consensus would be applied retrospectively with early adoption and other adjustments permitted. For public companies, adoption is required for interim or annual periods beginning after December 15, 2014. Management is currently evaluating the impact this new guidance may have on its financial statements.

Supplemental_Cash_Flow_Informa

Supplemental Cash Flow Information	3 Months Ended
	Mar. 31, 2014
Supplemental Cash Flow Information [Abstract]	'
Cash Flow, Supplemental Disclosures [Text Block]	'
	.	SUPPLEMENTAL CASH FLOW INFORMATION
	Noncash activities are summarized as follows:
	(In thousands)	Three Months Ended
		March 31,
		2014		2013
	Loans transferred to other real estate owned	$	6,338	$	23,442
	Loans held for sale transferred to loans and leases	3,789		96
	Beneficial conversion feature transferred from common stock to preferred stock as a result of subordinated debt conversions	—		169
	Subordinated debt converted to preferred stock	—		991

Cash_and_Money_Market_Investme

Cash and Money Market Investments	3 Months Ended
	Mar. 31, 2014
Gross and net information for selected financial instruments [Abstract]	'
Cash, Cash Equivalents, and Short-term Investments [Text Block]	'
	.	CASH AND MONEY MARKET INVESTMENTS
	Gross and net information for selected financial instruments in the balance sheet is as follows:
			March 31, 2014
	(In thousands)								Gross amounts not offset in the balance sheet
	Description		Gross amounts recognized		Gross amounts offset in the balance sheet		Net amounts presented in the balance sheet		Financial instruments			Cash collateral received/pledged			Net amount
	Assets:
	Federal funds sold and security resell agreements		$	379,947	$	—	$	379,947	$	—		$	—		$	379,947
	Derivatives (included in other assets)		57,683		—		57,683		(8,646		)	760			49,797
			$	437,630	$	—	$	437,630	$	(8,646	)	$	760		$	429,744
	Liabilities:
	Federal funds and other short-term borrowings		$	279,837	$	—	$	279,837	$	—		$	—		$	279,837
	Derivatives (included in other liabilities)		62,589		—		62,589		(8,646		)	(29,260		)	24,683
			$	342,426	$	—	$	342,426	$	(8,646	)	$	(29,260	)	$	304,520
			December 31, 2013
	(In thousands)								Gross amounts not offset in the balance sheet
	Description		Gross amounts recognized		Gross amounts offset in the balance sheet		Net amounts presented in the balance sheet		Financial instruments			Cash collateral received/pledged			Net amount
	Assets:
	Federal funds sold and security resell agreements		$	282,248	$	—	$	282,248	$	—		$	—		$	282,248
	Derivatives (included in other assets)		65,683		—		65,683		(11,650		)	2,210			56,243
			$	347,931	$	—	$	347,931	$	(11,650	)	$	2,210		$	338,491
	Liabilities:
	Federal funds and other short-term borrowings		$	340,348	$	—	$	340,348	$	—		$	—		$	340,348
	Derivatives (included in other liabilities)		68,397		—		68,397		(11,650		)	(26,997		)	29,750
			$	408,745	$	—	$	408,745	$	(11,650	)	$	(26,997	)	$	370,098
	Security resell and repurchase agreements are offset, when applicable, in the balance sheet according to master netting agreements. Security repurchase agreements are included with “Federal funds and other short-term borrowings.” Derivative instruments may be offset under their master netting agreements; however, for accounting purposes, we present these items on a gross basis in the Company’s balance sheet. See Note 7 for further information regarding derivative instruments.

Investment_Securities

Investment Securities	3 Months Ended
	Mar. 31, 2014
Investments [Abstract]	'
Investment Securities	'
	INVESTMENT SECURITIES
	Investment securities are summarized below. Note 10 discusses the process to estimate fair value for investment securities.
		March 31, 2014
					Recognized in OCI 1											Not recognized in OCI
	(In thousands)	Amortized			Gross				Gross			Carrying				Gross			Gross			Estimated
		cost			unrealized				unrealized			value				unrealized			unrealized			fair
					gains				losses							gains			losses			value
	Held-to-maturity
	Municipal securities	$	567,935		$	—			$	—		$	567,935			$	14,429		$	1,707		$	580,657
	Asset-backed securities:
	Trust preferred securities – banks and insurance	79,351			—				41,107			38,244				17,603			1,225			54,622
	Other debt securities	100			—				—			100				—			—			100
		647,386			—				41,107			606,279				32,032			2,932			635,379
	Available-for-sale
	U.S. Treasury securities	1,471			75				—			1,546										1,546
	U.S. Government agencies and corporations:
	Agency securities	561,153			2,595				5,997			557,751										557,751
	Agency guaranteed mortgage-backed securities	301,020			10,662				844			310,838										310,838
	Small Business Administration loan-backed securities	1,366,783			19,964				4,868			1,381,879										1,381,879
	Municipal securities	150,897			1,213				704			151,406										151,406
	Asset-backed securities:
	Trust preferred securities – banks and insurance	934,353			13,578				188,520			759,411										759,411
	Auction rate securities	6,508			87				35			6,560										6,560
	Other	1,462			290				—			1,752										1,752
		3,323,647			48,464				200,968			3,171,143										3,171,143
	Mutual funds and other	257,643			180				5,761			252,062										252,062
		3,581,290			48,644				206,729			3,423,205										3,423,205
	Total	$	4,228,676		$	48,644			$	247,836		$	4,029,484									$	4,058,584
	1	Other comprehensive income
		December 31, 2013
					Recognized in OCI											Not recognized in OCI
	(In thousands)	Amortized			Gross				Gross			Carrying				Gross			Gross			Estimated
		cost			unrealized				unrealized			value				unrealized			unrealized			fair
					gains				losses							gains			losses			value
	Held-to-maturity
	Municipal securities	$	551,055		$	—			$	—		$	551,055			$	11,295		$	4,616		$	557,734
	Asset-backed securities:
	Trust preferred securities – banks and insurance	79,419			—				41,593			37,826				15,195			1,308			51,713
	Other debt securities	100			—				—			100				—			—			100
		630,574			—				41,593			588,981				26,490			5,924			609,547
	Available-for-sale
	U.S. Treasury securities	1,442			104				—			1,546										1,546
	U.S. Government agencies and
	corporations:
	Agency securities	517,905			1,920				901			518,924										518,924
	Agency guaranteed mortgage-backed securities	308,687			9,926				1,237			317,376										317,376
	Small Business Administration loan-backed securities	1,202,901			21,129				2,771			1,221,259										1,221,259
	Municipal securities	65,425			1,329				490			66,264										66,264
	Asset-backed securities:
	Trust preferred securities – banks and insurance	1,508,224			13,439				282,843			1,238,820										1,238,820
	Trust preferred securities – real estate investment trusts	22,996			—				—			22,996										22,996
	Auction rate securities	6,507			118				26			6,599										6,599
	Other	27,540			359				—			27,899										27,899
		3,661,627			48,324				288,268			3,421,683										3,421,683
	Mutual funds and other	287,603			21				7,421			280,203										280,203
		3,949,230			48,345				295,689			3,701,886										3,701,886
	Total	$	4,579,804		$	48,345			$	337,282		$	4,290,867									$	4,311,433
	The amortized cost and estimated fair value of investment debt securities are shown subsequently as of March 31, 2014 by expected maturity distribution for collateralized debt obligations (“CDOs”) and by contractual maturity for other debt securities. Actual maturities may differ from expected or contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties.
		Held-to-maturity							Available-for-sale
	(In thousands)	Amortized			Estimated				Amortized			Estimated
		cost			fair				cost			fair
					value							value
	Due in one year or less	$	77,395		$	56,283			$	510,870		$	497,041
Due after one year through five years	195,088			161,077				1,212,400			1,205,205
Due after five years through ten years	135,308			138,806				709,151			697,454
Due after ten years	239,595			279,213				891,226			771,443
	$	647,386		$	635,379			$	3,323,647		$	3,171,143
The following is a summary of the amount of gross unrealized losses for investment securities and the estimated fair value by length of time the securities have been in an unrealized loss position:
	March 31, 2014
	Less than 12 months							12 months or more							Total
(In thousands)	Gross			Estimated				Gross			Estimated				Gross			Estimated
	unrealized			fair				unrealized			fair				unrealized			fair
	losses			value				losses			value				losses			value
Held-to-maturity
Municipal securities	$	1,414		$	43,060			$	293		$	5,721			$	1,707		$	48,781
Asset-backed securities:
Trust preferred securities – banks and insurance	56			71				42,276			54,551				42,332			54,622
	1,470			43,131				42,569			60,272				44,039			103,403
Available-for-sale
U.S. Government agencies and corporations:
Agency securities	5,936			326,547				61			5,803				5,997			332,350
Agency guaranteed mortgage-backed securities	792			48,560				52			3,054				844			51,614
Small Business Administration loan-backed securities	3,537			347,883				1,331			37,832				4,868			385,715
Municipal securities	57			7,127				647			2,824				704			9,951
Asset-backed securities:
Trust preferred securities – banks and insurance	1,280			52,845				187,240			624,501				188,520			677,346
Auction rate securities	11			1,603				24			889				35			2,492
	11,613			784,565				189,355			674,903				200,968			1,459,468
Mutual funds and other	—			—				5,761			124,331				5,761			124,331
	11,613			784,565				195,116			799,234				206,729			1,583,799
Total	$	13,083		$	827,696			$	237,685		$	859,506			$	250,768		$	1,687,202
		December 31, 2013
		Less than 12 months							12 months or more							Total
	(In thousands)	Gross unrealized losses			Estimated fair value				Gross unrealized losses			Estimated fair value				Gross unrealized losses			Estimated fair value
	Held-to-maturity
	Municipal securities	$	4,025		$	70,400			$	591		$	9,103			$	4,616		$	79,503
	Asset-backed securities:
	Trust preferred securities – banks and insurance	—			—				42,901			51,319				42,901			51,319
		4,025			70,400				43,492			60,422				47,517			130,822
	Available-for-sale
	U.S. Government agencies and corporations:
	Agency securities	828			47,862				73			5,874				901			53,736
	Agency guaranteed mortgage-backed securities	1,231			64,533				6			935				1,237			65,468
	Small Business Administration loan-backed securities	1,709			187,680				1,062			39,256				2,771			226,936
	Municipal securities	73			8,834				417			3,179				490			12,013
	Asset-backed securities:
	Trust preferred securities – banks and insurance	2,539			51,911				280,304			847,990				282,843			899,901
	Auction rate securities	5			1,609				21			892				26			2,501
		6,385			362,429				281,883			898,126				288,268			1,260,555
	Mutual funds and other	943			24,057				6,478			103,614				7,421			127,671
		7,328			386,486				288,361			1,001,740				295,689			1,388,226
	Total	$	11,353		$	456,886			$	331,853		$	1,062,162			$	343,206		$	1,519,048
At March 31, 2014 and December 31, 2013, respectively, 126 and 157 held-to-maturity (“HTM”) and 334 and 317 available -for-sale (“AFS”) investment securities were in an unrealized loss position.
Other-Than-Temporary Impairment
Ongoing Policy
We conduct a formal review of investment securities on a quarterly basis for the presence of other-than-temporary impairment (“OTTI”). We assess whether OTTI is present when the fair value of a debt security is less than its amortized cost basis at the balance sheet date (the vast majority of the investment portfolio are debt securities). Under these circumstances, OTTI is considered to have occurred if (1) we intend to sell the security; (2) it is “more likely than not” we will be required to sell the security before recovery of its amortized cost basis; or (3) the present value of expected cash flows is not sufficient to recover the entire amortized cost basis.
Noncredit-related OTTI in securities we intend to sell is recognized in earnings as is any credit-related OTTI in securities, regardless of our intent. Noncredit-related OTTI on AFS securities not expected to be sold is recognized in OCI. The amount of noncredit-related OTTI in a security is quantified as the difference in a security’s amortized cost after adjustment for credit impairment, and its lower fair value. Presentation of OTTI is made in the statement of income on a gross basis with an offset for the amount of OTTI recognized in OCI. For securities classified as HTM, the amount of noncredit-related OTTI recognized in OCI is accreted using the effective interest rate method to the credit-adjusted expected cash flow amounts of the securities over future periods.
Effect of Volcker Rule and Interim Final Rule
On December 10, 2013, the final Volcker Rule (“VR”) was published pursuant to the Dodd-Frank Act. The VR significantly restricted certain activities by covered bank holding companies, including restrictions on certain types of securities, proprietary trading, and private equity investing. On January 14, 2014, the VR’s application to certain CDO securities was revised by an Interim Final Rule (“IFR”) related primarily to bank trust preferred CDO securities.
Certain of the Company’s CDO securities backed primarily by insurance trust preferred securities, real estate investment trust (“REIT”) securities, and asset-backed securities (“ABS”) became disallowed to be held effective July 21, 2015 under the VR and the IFR. This regulatory change resulted in the Company no longer being able to hold these securities to maturity. Further, to reduce the risk profile of the portfolio, we determined as of December 31, 2013, an intent to sell certain disallowed as well as other allowed CDO securities.
During the first quarter of 2014, we recorded a total of $993 million par amount of sales and paydowns of CDO securities. Total sales proceeds were $607 million and, together with approximately $5 million of gains on paydowns, resulted in net gains of $31 million. Sales made reflected price improvement during the first quarter of 2014.
The sales included those announced on February 12, 2014 of $631 million par amount of CDO securities resulting in pretax gains of $65 million. These securities had been identified for sale as of December 31, 2013 and their amortized cost was adjusted to fair value as of that date.
Late in the first quarter, we sold an additional $301 million par amount of primarily insurance CDOs. These sales resulted in net realized pretax losses of $39 million. Unrealized losses on these securities were approximately $65 million at December 31, 2013. Their amortized cost was not adjusted to fair value at December 31, 2013 because the Company did not, at that date, intend to sell these securities.
OTTI Conclusions
Our 2013 Annual Report on Form 10-K describes in more detail our OTTI evaluation process. The following summarizes the conclusions from our OTTI evaluation for the security type that has significant gross unrealized losses at March 31, 2014:
OTTI – Asset-Backed Securities
Trust preferred securities – banks and insurance – These CDO securities are interests in variable rate pools of trust preferred securities issued by trusts related to bank holding companies and insurance companies (“collateral issuers”). They are rated by one or more Nationally Recognized Statistical Rating Organizations (“NRSROs”), which are rating agencies registered with the Securities and Exchange Commission (“SEC”). The more junior securities were purchased generally at par, while the senior securities were purchased from Lockhart Funding LLC (“Lockhart”), a previously consolidated qualifying special-purpose entity securities conduit, at their carrying values (generally par) and then adjusted to their lower fair values. The primary drivers that have given rise to the unrealized losses on CDOs with bank and insurance collateral are listed below:
1)	Market yield requirements for bank CDO securities remain elevated. The financial crisis and economic downturn resulted in significant utilization of both the unique five-year deferral option, which each collateral issuer maintains during the life of the CDO, and the payment in kind (“PIK”) feature described subsequently. The resulting increase in the rate of return demanded by the market for trust preferred CDOs remains substantially higher than the contractual interest rates. CDO tranches backed by bank trust preferred securities continue to be characterized by uncertainty surrounding collateral behavior, specifically including, but not limited to, prepayments; the future number, size and timing of bank failures; holding company bankruptcies; and allowed deferrals and subsequent resumption of payment or default due to nonpayment of contractual interest.
2)	Structural features of the collateral make these CDO tranches difficult for market participants to model. The first feature unique to bank CDOs is the interest deferral feature previously noted. Throughout the crisis starting in 2008, certain banks within our CDO pools have exercised this prerogative. The extent to which these deferrals are likely to either transition to default or, alternatively, come current prior to the five-year deadline is extremely difficult for market participants to assess.
A second structural feature that is difficult to model is the PIK feature, which provides that upon reaching certain levels of collateral default or deferral, certain junior CDO tranches will not receive current interest but will instead have the interest amount that is unpaid capitalized or deferred. The delay in payment caused by PIKing results in lower security fair values even if PIKing is projected to be fully cured.
3)	The ratings from one NRSRO remain below-investment-grade for even some of the most senior tranches that originally were rated AAA or the equivalent. Ratings on a number of CDO tranches vary significantly among rating agencies. The presence of a below-investment-grade rating by even a single rating agency will severely limit the pool of buyers, which causes greater illiquidity and therefore most likely a higher implicit discount rate/lower price with regard to that CDO tranche.
Our ongoing review of these securities determined that OTTI should be recorded for the three months ended March 31, 2014.
The following is a tabular rollforward of the total amount of credit-related OTTI:
(In thousands)	Three Months Ended										Three Months Ended
	31-Mar-14										31-Mar-13
	HTM			AFS				Total			HTM				AFS			Total
Balance of credit-related OTTI at beginning	$	(9,052	)	$	(176,833	)		$	(185,885	)	$	(13,549	)		$	(394,494	)	$	(408,043	)
of period
Additions recognized in earnings during the period:
Credit-related OTTI on securities not previously impaired	—			—				—			(403		)		—			(403		)
Additional credit-related OTTI on securities previously impaired	(27		)	—				(27		)	—				(9,714		)	(9,714		)
Subtotal of amounts recognized in earnings	(27		)	—				(27		)	(403		)		(9,714		)	(10,117		)
Reductions for securities sold or paid off during the period	—			12,919				12,919			—				—			—
Balance of credit-related OTTI at end of period	$	(9,079	)	$	(163,914	)		$	(172,993	)	$	(13,952	)		$	(404,208	)	$	(418,160	)
To determine the credit component of OTTI for all security types, we utilize projected cash flows. These cash flows are credit adjusted using, among other things, assumptions for default probability and loss severity. Certain other unobservable inputs such as prepayment rate assumptions are also utilized. In addition, certain internal and external models may be utilized. See Note 10 for further discussion. To determine the credit-related portion of OTTI in accordance with applicable accounting guidance, we use the security specific effective interest rate when estimating the present value of cash flows.
For those securities with credit-related OTTI recognized in the statement of income, the amounts of pretax noncredit-related OTTI recognized in OCI were as follows:
(In thousands)	Three Months Ended
	March 31,
	2014			2013
HTM	$	—		$	16,114
AFS	—			5,262
	$	—		$	21,376
The following summarizes gains and losses, including OTTI, that were recognized in the statement of income:
		Three Months Ended
		March 31, 2014							March 31, 2013
	(In thousands)	Gross gains			Gross losses				Gross gains			Gross losses
	Investment securities:
	Held-to-maturity	$	—		$	27			$	24		$	403
	Available-for-sale	72,561			41,647				3,276			9,715
	Other noninterest-bearing investments:
	Nonmarketable equity securities	912			—				2,857			25
		73,473			41,674				6,157			10,143
	Net gains (losses)				$	31,799						$	(3,986	)
	Statement of income information:
	Net impairment losses on investment securities				$	(27	)					$	(10,117	)
	Equity securities gains, net				912							2,832
	Fixed income securities gains, net				30,914							3,299
	Net gains (losses)				$	31,799						$	(3,986	)
Interest income by security type was as follows:
		Three Months Ended
		March 31, 2014										March 31, 2013
	(In thousands)	Taxable			Nontaxable				Total			Taxable				Nontaxable			Total
	Investment securities:
	Held-to-maturity	$	3,828		$	2,836			$	6,664		$	5,073			$	2,901		$	7,974
	Available-for-sale	20,424			524				20,948			17,173				539			17,712
	Trading	482			—				482			190				—			190
		$	24,734		$	3,360			$	28,094		$	22,436			$	3,440		$	25,876
Securities with a carrying value of $1.5 billion at March 31, 2014 and December 31, 2013 were pledged to secure public and trust deposits, advances, and for other purposes as required by law. Securities are also pledged as collateral for security repurchase agreements.

Loans_And_Allowance_For_Credit

Loans And Allowance For Credit Losses	3 Months Ended
	Mar. 31, 2014
Loans And Allowance For Credit Losses [Abstract]	'
Loans And Allowance For Credit Losses	'
	LOANS AND ALLOWANCE FOR CREDIT LOSSES
	Loans and Loans Held for Sale
	Loans are summarized as follows according to major portfolio segment and specific loan class:
	(In thousands)	March 31,			December 31,
		2014			2013
	Loans held for sale	$	126,344		$	171,328
	Commercial:
	Commercial and industrial	$	12,511,630		$	12,481,083
	Leasing	389,576			387,929
	Owner occupied	7,347,813			7,437,195
	Municipal	482,074			449,418
	Total commercial	20,731,093			20,755,625
	Commercial real estate:
	Construction and land development	2,263,920			2,182,821
	Term	8,080,348			8,005,837
	Total commercial real estate	10,344,268			10,188,658
	Consumer:
	Home equity credit line	2,165,285			2,133,120
	1-4 family residential	4,795,484			4,736,665
	Construction and other consumer real estate	330,215			324,922
	Bankcard and other revolving plans	360,389			356,240
	Other	186,089			197,864
	Total consumer	7,837,462			7,748,811
	FDIC-supported loans	285,313			350,271
	Total loans	$	39,198,136		$	39,043,365
	Loan balances are presented net of unearned income and fees, which amounted to $144.5 million at March 31, 2014 and $141.7 million at December 31, 2013.
	Owner occupied and commercial real estate (“CRE”) loans include unamortized premiums of approximately $44.1 million at March 31, 2014 and $47.2 million at December 31, 2013.
	Municipal loans generally include loans to municipalities with the debt service being repaid from general funds or pledged revenues of the municipal entity, or to private commercial entities or 501(c)(3) not-for-profit entities utilizing a pass-through municipal entity to achieve favorable tax treatment.
	Land development loans included in the construction and land development loan class were $589.1 million at March 31, 2014 and $561.3 million at December 31, 2013.
	FDIC-supported loans were acquired during 2009 and are indemnified by the Federal Deposit Insurance Corporation (“FDIC”) under loss sharing agreements. The FDIC-supported loan balances presented in the accompanying schedules include purchased credit-impaired (“PCI”) loans accounted for at their carrying values rather than their outstanding balances. See subsequent discussion under Purchased Loans.
	Loans with a carrying value of approximately $23.5 billion at March 31, 2014 and $23.0 billion at December 31, 2013 have been pledged at the Federal Reserve and various Federal Home Loan Banks (“FHLB”) as collateral for current and potential borrowings.
	We sold loans totaling $337.6 million and $447.6 million for the three months ended March 31, 2014, and 2013, respectively, that were classified as loans held for sale. Loans classified as loans held for sale primarily consist of conforming residential mortgages. Amounts added to loans held for sale during these periods were $295.5 million and $358.9 million, respectively. Income from loans sold, excluding servicing, for these same periods was $3.5 million and $8.5 million.
	Allowance for Credit Losses
	The allowance for credit losses (“ACL”) consists of the allowance for loan and lease losses (“ALLL”) (also referred to as the allowance for loan losses) and the reserve for unfunded lending commitments (“RULC”).
	Allowance for Loan and Lease Losses
	The ALLL represents our estimate of probable and estimable losses inherent in the loan and lease portfolio as of the balance sheet date. Losses are charged to the ALLL when recognized. Generally, commercial loans are charged off or charged down at the point at which they are determined to be uncollectible in whole or in part, or when 180 days past due unless the loan is well secured and in the process of collection. Consumer loans are either charged off or charged down to net realizable value no later than the month in which they become 180 days past due. Closed-end consumer loans that are not secured by residential real estate are either charged off or charged down to net realizable value no later than the month in which they become 120 days past due. We establish the amount of the ALLL by analyzing the portfolio at least quarterly, and we adjust the provision for loan losses so the ALLL is at an appropriate level at the balance sheet date.
	We determine our ALLL as the best estimate within a range of estimated losses. The methodologies we use to estimate the ALLL depend upon the impairment status and portfolio segment of the loan. The methodology for impaired loans is discussed subsequently. For the commercial and CRE segments, we use a comprehensive loan grading system to assign probability of default (“PD”) and loss given default (“LGD”) grades to each loan. The credit quality indicators discussed subsequently are based on this grading system. PD and LGD grades are based on both financial and statistical models and loan officers’ judgment. We create groupings of these grades for each subsidiary bank and loan class and calculate historic loss rates using a loss migration analysis that attributes historic realized losses to these loan grade groupings over the period of January 2008 through the most recent full quarter.
	For the consumer loan segment, we use roll rate models to forecast probable inherent losses. Roll rate models measure the rate at which consumer loans migrate from one delinquency category to the next worse delinquency category, and eventually to loss. We estimate roll rates for consumer loans using recent delinquency and loss experience by segmenting our consumer loan portfolio into separate pools based on common risk characteristics and separately calculating historical delinquency and loss experience for each pool. These roll rates are then applied to current delinquency levels to estimate probable inherent losses. Roll rates incorporate housing market trends inasmuch as these trends manifest themselves in charge-offs and delinquencies. In addition, our qualitative and environmental factors discussed subsequently incorporate the most recent housing market trends.
	For FDIC-supported loans purchased with evidence of credit deterioration, we determine the ALLL according to separate accounting guidance. The accounting for these loans, including the allowance calculation, is described in the Purchased Loans section following.
	The current status and historical changes in qualitative and environmental factors may not be reflected in our quantitative models. Thus, after applying historical loss experience, as described above, we review the quantitatively derived level of ALLL for each segment using qualitative criteria and use those criteria to determine our estimate within the range. We track various risk factors that influence our judgment regarding the level of the ALLL across the portfolio segments. These factors primarily include:
	•	Asset quality trends
	•	Risk management and loan administration practices
	•	Risk identification practices
	•	Effect of changes in the nature and volume of the portfolio
	•	Existence and effect of any portfolio concentrations
	•	National economic and business conditions
	•	Regional and local economic and business conditions
	•	Data availability and applicability
	•	Effects of other external factors
	The magnitude of the impact of these factors on our qualitative assessment of the ALLL changes from quarter to quarter according to the extent these factors are already reflected in historic loss rates and according to the extent these factors diverge from one to another. We also consider the uncertainty inherent in the estimation process when evaluating the ALLL.
	Reserve for Unfunded Lending Commitments
	We also estimate a reserve for potential losses associated with off-balance sheet commitments, including standby letters of credit. We determine the RULC using the same procedures and methodologies that we use for the ALLL. The loss factors used in the RULC are the same as the loss factors used in the ALLL, and the qualitative adjustments used in the RULC are the same as the qualitative adjustments used in the ALLL. We adjust the Company’s unfunded lending commitments that are not unconditionally cancelable to an outstanding amount equivalent using credit conversion factors, and we apply the loss factors to the outstanding equivalents.
	Changes in the allowance for credit losses are summarized as follows:
		Three Months Ended March 31, 2014
	(In thousands)	Commercial			Commercial				Consumer			FDIC-				Total
					real estate							supported 1
	Allowance for loan losses:
	Balance at beginning of period	$	465,145		$	213,363			$	60,865		$	6,918			$	746,291
	Additions:
	Provision for loan losses	11,682			(1,567		)		(8,868		)	(1,857		)		(610		)
	Adjustment for FDIC-supported loans	—			—				—			(817		)		(817		)
	Deductions:
	Gross loan and lease charge-offs	(9,124		)	(7,854		)		(3,114		)	(703		)		(20,795		)
Recoveries	6,845			2,604				2,197			1,238				12,884
Net loan and lease charge-offs	(2,279		)	(5,250		)		(917		)	535				(7,911		)
Balance at end of period	$	474,548		$	206,546			$	51,080		$	4,779			$	736,953
Reserve for unfunded lending commitments:
Balance at beginning of period	$	48,345		$	37,485			$	3,875		$	—			$	89,705
Provision charged (credited) to earnings	1,525			(2,212		)		(325		)	—				(1,012		)
Balance at end of period	$	49,870		$	35,273			$	3,550		$	—			$	88,693
Total allowance for credit losses at end of period:
Allowance for loan losses	$	474,548		$	206,546			$	51,080		$	4,779			$	736,953
Reserve for unfunded lending commitments	49,870			35,273				3,550			—				88,693
Total allowance for credit losses	$	524,418		$	241,819			$	54,630		$	4,779			$	825,646
	Three Months Ended March 31, 2013
(In thousands)	Commercial			Commercial				Consumer			FDIC-				Total
				real estate							supported 1
Allowance for loan losses:
Balance at beginning of period	$	510,908		$	276,976			$	95,656		$	12,547			$	896,087
Additions:
Provision for loan losses	(3,229		)	(18,628		)		(5,020		)	(2,158		)		(29,035		)
Adjustment for FDIC-supported loans	—			—				—			(7,429		)		(7,429		)
Deductions:
Gross loan and lease charge-offs	(18,100		)	(7,224		)		(9,937		)	(206		)		(35,467		)
Recoveries	7,351			5,297				3,923			1,054				17,625
Net loan and lease charge-offs	(10,749		)	(1,927		)		(6,014		)	848				(17,842		)
Balance at end of period	$	496,930		$	256,421			$	84,622		$	3,808			$	841,781
Reserve for unfunded lending commitments:
Balance at beginning of period	$	67,374		$	37,852			$	1,583		$	—			$	106,809
Provision charged (credited) to earnings	(1,742		)	(4,612		)		—			—				(6,354		)
Balance at end of period	$	65,632		$	33,240			$	1,583		$	—			$	100,455
Total allowance for credit losses at end of period:
Allowance for loan losses	$	496,930		$	256,421			$	84,622		$	3,808			$	841,781
Reserve for unfunded lending commitments	65,632			33,240				1,583			—				100,455
Total allowance for credit losses	$	562,562		$	289,661			$	86,205		$	3,808			$	942,236
1 The Purchased Loans section following contains further discussion related to FDIC-supported loans.
The ALLL and outstanding loan balances according to the Company’s impairment method are summarized as follows:
	March 31, 2014
(In thousands)	Commercial			Commercial				Consumer			FDIC-				Total
				real estate							supported
Allowance for loan losses:
Individually evaluated for impairment	$	41,739		$	7,409			$	10,137		$	—			$	59,285
Collectively evaluated for impairment	432,809			199,137				40,943			528				673,417
Purchased loans with evidence of credit deterioration	—			—				—			4,251				4,251
Total	$	474,548		$	206,546			$	51,080		$	4,779			$	736,953
Outstanding loan balances:
Individually evaluated for impairment	$	329,389		$	240,384			$	100,680		$	1,218			$	671,671
Collectively evaluated for impairment	20,401,704			10,103,884				7,736,782			35,128				38,277,498
Purchased loans with evidence of credit deterioration	—			—				—			248,967				248,967
Total	$	20,731,093		$	10,344,268			$	7,837,462		$	285,313			$	39,198,136
	December 31, 2013
(In thousands)	Commercial			Commercial				Consumer			FDIC-				Total
				real estate							supported
Allowance for loan losses:
Individually evaluated for impairment	$	39,288		$	12,510			$	10,701		$	—			$	62,499
Collectively evaluated for impairment	425,857			200,853				50,164			392				677,266
Purchased loans with evidence of credit deterioration	—			—				—			6,526				6,526
Total	$	465,145		$	213,363			$	60,865		$	6,918			$	746,291
Outstanding loan balances:
Individually evaluated for impairment	$	315,604		$	262,907			$	101,545		$	1,224			$	681,280
Collectively evaluated for impairment	20,440,021			9,925,751				7,647,266			37,963				38,051,001
Purchased loans with evidence of credit deterioration	—			—				—			311,084				311,084
Total	$	20,755,625		$	10,188,658			$	7,748,811		$	350,271			$	39,043,365
Nonaccrual and Past Due Loans
Loans are generally placed on nonaccrual status when payment in full of principal and interest is not expected, or the loan is 90 days or more past due as to principal or interest, unless the loan is both well secured and in the process of collection. Factors we consider in determining whether a loan is placed on nonaccrual include delinquency status, collateral value, borrower or guarantor financial statement information, bankruptcy status, and other information which would indicate that the full and timely collection of interest and principal is uncertain.
A nonaccrual loan may be returned to accrual status when all delinquent interest and principal become current in accordance with the terms of the loan agreement; the loan, if secured, is well secured; the borrower has paid according to the contractual terms for a minimum of six months; and analysis of the borrower indicates a reasonable assurance of the ability and willingness to maintain payments. Payments received on nonaccrual loans are applied as a reduction to the principal outstanding.
Closed-end loans with payments scheduled monthly are reported as past due when the borrower is in arrears for two or more monthly payments. Similarly, open-end credit such as charge-card plans and other revolving credit plans are reported as past due when the minimum payment has not been made for two or more billing cycles. Other multi-payment obligations (i.e., quarterly, semiannual, etc.), single payment, and demand notes are reported as past due when either principal or interest is due and unpaid for a period of 30 days or more.
Nonaccrual loans are summarized as follows:
(In thousands)	March 31,			December 31,
	2014			2013
Commercial:
Commercial and industrial	$	108,618		$	97,960
Leasing	684			757
Owner occupied	127,140			136,281
Municipal	9,947			9,986
Total commercial	246,389			244,984
Commercial real estate:
Construction and land development	29,061			29,205
Term	59,202			60,380
Total commercial real estate	88,263			89,585
Consumer:
Home equity credit line	9,624			8,969
1-4 family residential	48,023			53,002
Construction and other consumer real estate	3,424			3,510
Bankcard and other revolving plans	882			1,365
Other	944			804
Total consumer loans	62,897			67,650
FDIC-supported loans	4,117			4,394
Total	$	401,666		$	406,613
Past due loans (accruing and nonaccruing) are summarized as follows:
	March 31, 2014
(In thousands)	Current			30-89 days				90+ days			Total				Total			Accruing		Nonaccrual
				past  due				past  due			past  due				loans			loans		loans
																		90+ days		that are
																		past due		current1
Commercial:
Commercial and industrial	$	12,403,866		$	53,684			$	54,080		$	107,764			$	12,511,630		$	826	$	45,137
Leasing	389,201			181				194			375				389,576			—		490
Owner occupied	7,262,832			44,218				40,763			84,981				7,347,813			130		71,445
Municipal	473,263			—				8,811			8,811				482,074			—		1,136
Total commercial	20,529,162			98,083				103,848			201,931				20,731,093			956		118,208
Commercial real estate:
Construction and land development	2,246,891			5,518				11,511			17,029				2,263,920			—		16,934
Term	8,023,737			31,597				25,014			56,611				8,080,348			3,992		21,690
Total commercial real estate	10,270,628			37,115				36,525			73,640				10,344,268			3,992		38,624
Consumer:
Home equity credit line	2,151,938			6,305				7,042			13,347				2,165,285			—		2,145
1-4 family residential	4,765,571			11,351				18,562			29,913				4,795,484			702		25,889
Construction and other consumer real estate	326,297			3,035				883			3,918				330,215			—		2,100
Bankcard and other revolving plans	357,596			1,722				1,071			2,793				360,389			1,008		739
Other	184,687			625				777			1,402				186,089			3		127
Total consumer loans	7,786,089			23,038				28,335			51,373				7,837,462			1,713		31,000
FDIC-supported loans	247,399			4,390				33,524			37,914				285,313			31,530		1,572
Total	$	38,833,278		$	162,626			$	202,232		$	364,858			$	39,198,136		$	38,191	$	189,404
	December 31, 2013
(In thousands)	Current			30-89 days				90+ days			Total				Total			Accruing		Nonaccrual
				past  due				past  due			past due				loans			loans		loans
																		90+ days		that are
																		past due		current1
Commercial:
Commercial and industrial	$	12,387,546		$	48,811			$	44,726		$	93,537			$	12,481,083		$	1,855	$	52,412
Leasing	387,526			173				230			403				387,929			36		563
Owner occupied	7,357,618			36,718				42,859			79,577				7,437,195			744		82,072
Municipal	440,608			3,307				5,503			8,810				449,418			—		1,176
Total commercial	20,573,298			89,009				93,318			182,327				20,755,625			2,635		136,223
Commercial real estate:
Construction and land development	2,162,018			8,967				11,836			20,803				2,182,821			23		17,311
Term	7,971,327			15,362				19,148			34,510				8,005,837			5,580		42,624
Total commercial real estate	10,133,345			24,329				30,984			55,313				10,188,658			5,603		59,935
Consumer:
Home equity credit line	2,122,549			8,001				2,570			10,571				2,133,120			98		2,868
1-4 family residential	4,704,852			8,526				23,287			31,813				4,736,665			667		27,592
Construction and other consumer real estate	322,807			1,038				1,077			2,115				324,922			—		2,232
Bankcard and other revolving plans	353,060			2,093				1,087			3,180				356,240			900		1,105
Other	196,327			827				710			1,537				197,864			54		125
Total consumer loans	7,699,595			20,485				28,731			49,216				7,748,811			1,719		33,922
FDIC-supported loans	305,709			12,026				32,536			44,562				350,271			30,391		1,975
Total	$	38,711,947		$	145,849			$	185,569		$	331,418			$	39,043,365		$	40,348	$	232,055
1 Represents nonaccrual loans that are not past due more than 30 days; however, full payment of principal and interest is still not expected.
Credit Quality Indicators
In addition to the past due and nonaccrual criteria, we also analyze loans using loan risk grading systems, which vary based on the size and type of credit risk exposure. The internal risk grades assigned to loans follow our definitions of Pass, Special Mention, Substandard, and Doubtful, which are consistent with published definitions of regulatory risk classifications.
Definitions of Pass, Special Mention, Substandard, and Doubtful are summarized as follows:
Pass – A Pass asset is higher quality and does not fit any of the other categories described below. The likelihood of loss is considered remote.
Special Mention – A Special Mention asset has potential weaknesses that deserve management’s close attention. If left uncorrected, these potential weaknesses may result in deterioration of the repayment prospects for the asset or in the bank’s credit position at some future date.
Substandard – A Substandard asset is inadequately protected by the current sound worth and paying capacity of the obligor or of the collateral pledged, if any. Assets so classified have well defined weaknesses and are characterized by the distinct possibility that the bank may sustain some loss if deficiencies are not corrected.
Doubtful – A Doubtful asset has all the weaknesses inherent in a Substandard asset with the added characteristics that the weaknesses make collection or liquidation in full highly questionable and improbable.
We generally assign internal risk grades to commercial and CRE loans with commitments equal to or greater than $750,000 based on financial and statistical models, individual credit analysis, and loan officer judgment. For these larger loans, we assign one of multiple grades within the Pass classification or one of the following four grades: Special Mention, Substandard, Doubtful, and Loss. Loss indicates that the outstanding balance has been charged off. We confirm our internal risk grades quarterly, or as soon as we identify information that affects the credit risk of the loan.
For consumer loans or certain small commercial loans with commitments equal to or less than $750,000, we generally assign internal risk grades similar to those described previously based on automated rules that depend on refreshed credit scores, payment performance, and other risk indicators. These are generally assigned either a Pass or Substandard grade and are reviewed as we identify information that might warrant a grade change.
Outstanding loan balances (accruing and nonaccruing) categorized by these credit quality indicators are summarized as follows:
	March 31, 2014
(In thousands)	Pass			Special				Sub-			Doubtful				Total			Total
				Mention				standard							loans			allowance
Commercial:
Commercial and industrial	$	11,722,928		$	340,409			$	436,572		$	11,721			$	12,511,630
Leasing	383,454			992				5,130			—				389,576
Owner occupied	6,762,002			167,655				417,828			328				7,347,813
Municipal	472,127			—				9,947			—				482,074
Total commercial	19,340,511			509,056				869,477			12,049				20,731,093			$	474,548
Commercial real estate:
Construction and land development	2,192,237			14,181				57,502			—				2,263,920
Term	7,675,747			149,016				253,739			1,846				8,080,348
Total commercial real estate	9,867,984			163,197				311,241			1,846				10,344,268			206,546
Consumer:
Home equity credit line	2,140,762			—				24,523			—				2,165,285
1-4 family residential	4,732,423			—				63,061			—				4,795,484
Construction and other consumer real estate	321,328			—				8,887			—				330,215
Bankcard and other revolving plans	358,045			—				2,344			—				360,389
Other	184,863			—				1,226			—				186,089
Total consumer loans	7,737,421			—				100,041			—				7,837,462			51,080
FDIC-supported loans	181,100			19,366				84,847			—				285,313			4,779
Total	$	37,127,016		$	691,619			$	1,365,606		$	13,895			$	39,198,136		$	736,953
	December 31, 2013
(In thousands)	Pass			Special				Sub-			Doubtful				Total			Total
				Mention				standard							loans			allowance
Commercial:
Commercial and industrial	$	11,807,825		$	303,598			$	360,391		$	9,269			$	12,481,083
Leasing	380,268			2,050				5,611			—				387,929
Owner occupied	6,827,464			184,328				425,403			—				7,437,195
Municipal	439,432			—				9,986			—				449,418
Total commercial	19,454,989			489,976				801,391			9,269				20,755,625			$	465,145
Commercial real estate:
Construction and land development	2,107,828			15,010				59,983			—				2,182,821
Term	7,569,472			172,856				263,509			—				8,005,837
Total commercial real estate	9,677,300			187,866				323,492			—				10,188,658			213,363
Consumer:
Home equity credit line	2,111,475			—				21,645			—				2,133,120
1-4 family residential	4,668,841			—				67,824			—				4,736,665
Construction and other consumer real estate	313,881			—				11,041			—				324,922
Bankcard and other revolving plans	353,618			—				2,622			—				356,240
Other	196,770			—				1,094			—				197,864
Total consumer loans	7,644,585			—				104,226			—				7,748,811			60,865
FDIC-supported loans	232,893			22,532				94,846			—				350,271			6,918
Total	$	37,009,767		$	700,374			$	1,323,955		$	9,269			$	39,043,365		$	746,291
Impaired Loans
Loans are considered impaired when, based on current information and events, it is probable that we will be unable to collect all amounts due in accordance with the contractual terms of the loan agreement, including scheduled interest payments. For our non-purchased credit impaired loans, if a nonaccrual loan has a balance greater than $1 million or if a loan is a troubled debt restructuring (“TDR”), including TDRs that subsequently default, we individually evaluate the loan for impairment and estimate a specific reserve for the loan for all portfolio segments under applicable accounting guidance. Smaller nonaccrual loans are pooled for ALLL estimation purposes. PCI loans in our FDIC-supported portfolio segment are included in impaired loans and are accounted for under separate accounting guidance. See subsequent discussion under Purchased Loans.
When a loan is impaired, we estimate a specific reserve for the loan based on the projected present value of the loan’s future cash flows discounted at the loan’s effective interest rate, the observable market price of the loan, or the fair value of the loan’s underlying collateral. The process of estimating future cash flows also incorporates the same determining factors discussed previously under nonaccrual loans. When we base the impairment amount on the fair value of the loan’s underlying collateral, we generally charge off the portion of the balance that is impaired, such that these loans do not have a specific reserve in the ALLL. Payments received on impaired loans that are accruing are recognized in interest income, according to the contractual loan agreement. Payments received on impaired loans that are on nonaccrual are not recognized in interest income, but are applied as a reduction to the principal outstanding. The amount of interest income recognized on a cash basis during the time the loans were impaired within the three months ended March 31, 2014 and 2013 was not significant.
Information on impaired loans individually evaluated is summarized as follows, including the average recorded investment and interest income recognized for the three months ended March 31, 2014 and 2013:
	March 31, 2014
(In thousands)	Unpaid			Recorded investment							Total				Related
	principal										recorded				allowance
	balance			with no				with			investment
				allowance				allowance
Commercial:
Commercial and industrial	$	201,765		$	36,155			$	140,988		$	177,143			$	31,319
Owner occupied	146,504			59,435				71,281			130,716				8,487
Total commercial	348,269			95,590				212,269			307,859				39,806
Commercial real estate:
Construction and land development	70,088			28,680				30,460			59,140				2,865
Term	175,713			70,196				62,043			132,239				3,634
Total commercial real estate	245,801			98,876				92,503			191,379				6,499
Consumer:
Home equity credit line	18,145			13,095				2,177			15,272				67
1-4 family residential	94,639			39,589				39,841			79,430				9,790
Construction and other consumer real estate	4,241			2,341				986			3,327				179
Other	630			630				—			630				—
Total consumer loans	117,655			55,655				43,004			98,659				10,036
FDIC-supported loans	321,798			91,487				158,698			250,185				4,251
Total	$	1,033,523		$	341,608			$	506,474		$	848,082			$	60,592
	December 31, 2013
(In thousands)	Unpaid			Recorded investment							Total				Related
	principal										recorded				allowance
	balance			with no				with			investment
				allowance				allowance
Commercial:
Commercial and industrial	$	178,281		$	30,092			$	126,692		$	156,784			$	23,687
Owner occupied	151,499			50,361				88,584			138,945				13,900
Total commercial	329,780			80,453				215,276			295,729				37,587
Commercial real estate:
Construction and land development	85,440			19,206				50,744			69,950				3,483
Term	171,826			34,258				112,330			146,588				7,981
Total commercial real estate	257,266			53,464				163,074			216,538				11,464
Consumer:
Home equity credit line	17,547			12,568				2,200			14,768				178
1-4 family residential	95,613			38,775				42,132			80,907				10,276
Construction and other consumer real estate	4,713			2,643				933			3,576				175
Bankcard and other revolving plans	726			726				—			726				—
Other	—			—				—			—				—
Total consumer loans	118,599			54,712				45,265			99,977				10,629
FDIC-supported loans	404,308			83,917				228,392			312,309				6,526
Total	$	1,109,953		$	272,546			$	652,007		$	924,553			$	66,206
	Three Months Ended							Three Months Ended
	31-Mar-14							31-Mar-13
(In thousands)	Average			Interest				Average			Interest
	recorded			income				recorded			income
	investment			recognized				investment			recognized
Commercial:
Commercial and industrial	$	175,155		$	1,024			$	177,745		$	856
Owner occupied	137,175			752				182,825			806
Total commercial	312,330			1,776				360,570			1,662
Commercial real estate:
Construction and land development	62,548			552				147,225			664
Term	149,425			1,294				289,103			1,836
Total commercial real estate	211,973			1,846				436,328			2,500
Consumer:
Home equity credit line	14,952			135				11,455			59
1-4 family residential	80,154			448				99,191			382
Construction and other consumer real estate	3,332			35				6,122			46
Other	704			—				1,816			—
Total consumer loans	99,142			618				118,584			487
FDIC-supported loans	283,782			22,305			1	447,841			25,153			1
Total	$	907,227		$	26,545			$	1,363,323		$	29,802
1 The balance of interest income recognized results primarily from accretion of interest income on impaired FDIC-supported loans.
Modified and Restructured Loans
Loans may be modified in the normal course of business for competitive reasons or to strengthen the Company’s position. Loan modifications and restructurings may also occur when the borrower experiences financial difficulty and needs temporary or permanent relief from the original contractual terms of the loan. These modifications are structured on a loan-by-loan basis and, depending on the circumstances, may include extended payment terms, a modified interest rate, forgiveness of principal, or other concessions. Loans that have been modified to accommodate a borrower who is experiencing financial difficulties, and for which the Company has granted a concession that it would not otherwise consider, are considered TDRs.
We consider many factors in determining whether to agree to a loan modification involving concessions, and seek a solution that will both minimize potential loss to the Company and attempt to help the borrower. We evaluate borrowers’ current and forecasted future cash flows, their ability and willingness to make current contractual or proposed modified payments, the value of the underlying collateral (if applicable), the possibility of obtaining additional security or guarantees, and the potential costs related to a repossession or foreclosure and the subsequent sale of the collateral.
TDRs are classified as either accrual or nonaccrual loans. A loan on nonaccrual and restructured as a TDR will remain on nonaccrual status until the borrower has proven the ability to perform under the modified structure for a minimum of six months, and there is evidence that such payments can and are likely to continue as agreed. Performance prior to the restructuring, or significant events that coincide with the restructuring, are included in assessing whether the borrower can meet the new terms and may result in the loan being returned to accrual at the time of restructuring or after a shorter performance period. If the borrower’s ability to meet the revised payment schedule is uncertain, the loan remains classified as a nonaccrual loan. A TDR loan that specifies an interest rate that at the time of the restructuring is greater than or equal to the rate the bank is willing to accept for a new loan with comparable risk may not be reported as a TDR or an impaired loan in the calendar years subsequent to the restructuring if it is in compliance with its modified terms.
Selected information on TDRs that includes the recorded investment on an accruing and nonaccruing basis by loan class and modification type is summarized in the following schedules:
	March 31, 2014
	Recorded investment resulting from the following modification types:
(In thousands)	Interest			Maturity				Principal			Payment				Other1			Multiple		Total
	rate below			or term				forgiveness			deferral							modification
	market			extension														types2
Accruing
Commercial:
Commercial and industrial	$	640		$	8,738			$	21		$	3,553			$	4,214		$	64,547	$	81,713
Owner occupied	22,484			1,072				980			1,282				9,573			21,437		56,828
Total commercial	23,124			9,810				1,001			4,835				13,787			85,984		138,541
Commercial real estate:
Construction and land development	—			8,003				—			1,077				562			23,328		32,970
Term	8,603			8,980				188			3,695				4,151			59,215		84,832
Total commercial real estate	8,603			16,983				188			4,772				4,713			82,543		117,802
Consumer:
Home equity credit line	742			34				10,158			—				164			426		11,524
1-4 family residential	2,608			55				6,966			638				1,437			37,323		49,027
Construction and other consumer real estate	123			326				49			—				—			1,494		1,992
Total consumer loans	3,473			415				17,173			638				1,601			39,243		62,543
Total accruing	35,200			27,208				18,362			10,245				20,101			207,770		318,886
Nonaccruing
Commercial:
Commercial and industrial	1,881			6,412				—			412				409			18,800		27,914
Owner occupied	2,678			1,184				1,037			1,558				6,917			16,599		29,973
Total commercial	4,559			7,596				1,037			1,970				7,326			35,399		57,887
Commercial real estate:
Construction and land development	11,555			1,075				—			—				1,645			11,895		26,170
Term	2,311			84				—			1,867				392			15,577		20,231
Total commercial real estate	13,866			1,159				—			1,867				2,037			27,472		46,401
Consumer:
Home equity credit line	—			—				793			—				217			69		1,079
1-4 family residential	4,249			48				1,784			—				3,257			14,581		23,919
Construction and other consumer real estate	4			1,105				—			—				—			139		1,248
Bankcard and other revolving plans	—			—				—			—				—			—		—
Total consumer loans	4,253			1,153				2,577			—				3,474			14,789		26,246
Total nonaccruing	22,678			9,908				3,614			3,837				12,837			77,660		130,534
Total	$	57,878		$	37,116			$	21,976		$	14,082			$	32,938		$	285,430	$	449,420
	December 31, 2013
	Recorded investment resulting from the following modification types:
(In thousands)	Interest			Maturity				Principal			Payment				Other1			Multiple		Total
	rate below			or term				forgiveness			deferral							modification
	market			extension														types2
Accruing
Commercial:
Commercial and industrial	$	1,143		$	9,848			$	11,491		$	3,217			$	4,308		$	53,117	$	83,124
Owner occupied	22,841			1,482				987			1,291				9,659			23,576		59,836
Total commercial	23,984			11,330				12,478			4,508				13,967			76,693		142,960
Commercial real estate:
Construction and land development	1,067			8,231				—			1,063				4,119			28,295		42,775
Term	7,542			9,241				190			3,783				14,932			61,024		96,712
Total commercial real estate	8,609			17,472				190			4,846				19,051			89,319		139,487
Consumer:
Home equity credit line	743			—				9,438			—				323			332		10,836
1-4 family residential	2,628			997				6,814			643				3,083			35,869		50,034
Construction and other consumer real estate	128			329				11			—				—			1,514		1,982
Total consumer loans	3,499			1,326				16,263			643				3,406			37,715		62,852
Total accruing	36,092			30,128				28,931			9,997				36,424			203,727		345,299
Nonaccruing
Commercial:
Commercial and industrial	2,028			6,989				—			473				8,948			10,395		28,833
Owner occupied	3,020			1,489				1,043			1,593				10,482			14,927		32,554
Total commercial	5,048			8,478				1,043			2,066				19,430			25,322		61,387
Commercial real estate:
Construction and land development	11,699			1,555				—			—				5,303			8,617		27,174
Term	2,126			—				—			1,943				315			14,861		19,245
Total commercial real estate	13,825			1,555				—			1,943				5,618			23,478		46,419
Consumer:
Home equity credit line	—			—				1,036			—				221			—		1,257
1-4 family residential	4,315			1,396				1,606			—				3,901			14,109		25,327
Construction and other consumer real estate	4			1,260				—			—				—			229		1,493
Bankcard and other revolving plans	—			252				—			—				—			—		252
Total consumer loans	4,319			2,908				2,642			—				4,122			14,338		28,329
Total nonaccruing	23,192			12,941				3,685			4,009				29,170			63,138		136,135
Total	$	59,284		$	43,069			$	32,616		$	14,006			$	65,594		$	266,865	$	481,434
1 Includes TDRs that resulted from other modification types including, but not limited to, a legal judgment awarded on different terms, a bankruptcy plan confirmed on different terms, a settlement that includes the delivery of collateral in exchange for debt reduction, etc.
2 Includes TDRs that resulted from a combination of any of the previous modification types.
Unused commitments to extend credit on TDRs amounted to approximately $3.8 million at March 31, 2014 and $5.6 million at December 31, 2013.
The total recorded investment of all TDRs in which interest rates were modified below market was $186.2 million at March 31, 2014 and $172.6 million at December 31, 2013. These loans are included in the previous table in the columns for interest rate below market and multiple modification types.
The net financial impact on interest income due to interest rate modifications below market for accruing TDRs is summarized in the following schedule:
(In thousands)	Three Months Ended
	March 31,
	2014			2013
Commercial:
Commercial and industrial	$	212		$	(181	)
Owner occupied	(1,709		)	(1,060		)
Total commercial	(1,497		)	(1,241		)
Commercial real estate:
Construction and land development	(666		)	(416		)
Term	(1,778		)	(2,659		)
Total commercial real estate	(2,444		)	(3,075		)
Consumer:
Home equity credit line	(24		)	(39		)
1-4 family residential	(3,601		)	(3,860		)
Construction and other consumer real estate	(105		)	(109		)
Total consumer loans	(3,730		)	(4,008		)
Total decrease to interest income1	$	(7,671	)	$	(8,324	)
1Calculated based on the difference between the modified rate and the premodified rate applied to the recorded investment.
On an ongoing basis, we monitor the performance of all TDRs according to their restructured terms. Subsequent payment default is defined in terms of delinquency, when principal or interest payments are past due 90 days or more for commercial loans, or 60 days or more for consumer loans.
The recorded investment of accruing and nonaccruing TDRs that had a payment default during the period listed below (and are still in default at period-end) and are within 12 months or less of being modified as TDRs is as follows:
	Three Months Ended										Three Months Ended
	31-Mar-14										31-Mar-13
(In thousands)	Accruing			Nonaccruing				Total			Accruing				Nonaccruing			Total
Commercial:
Commercial and industrial	$	—		$	—			$	—		$	—			$	25		$	25
Owner occupied	—			—				—			—				135			135
Total commercial	—			—				—			—				160			160
Commercial real estate:
Term	—			84				84			—				1,071			1,071
Total commercial real estate	—			84				84			—				1,071			1,071
Consumer:
Home equity credit line	—			217				217			—				85			85
Construction and other consumer real estate	—			26				26			—				—			—
Total consumer loans	—			243				243			—				85			85
Total	$	—		$	327			$	327		$	—			$	1,316		$	1,316
Note: Total loans modified as TDRs during the 12 months previous to March 31, 2014 and 2013 were $142.4 million and $181.5 million, respectively.
Concentrations of Credit Risk
We perform an ongoing analysis of our loan portfolio to evaluate whether there is any significant exposure to any concentrations of credit risk. These potential concentrations include, but are not limited to, individual borrowers, groups of borrowers, industries, geographies, collateral types, sponsors, etc. Such credit risks (whether on- or off-balance sheet) may occur when groups of borrowers or counterparties have similar economic characteristics and are similarly affected by changes in economic or other conditions. Credit risk also includes the loss that would be recognized subsequent to the reporting date if counterparties failed to perform as contracted. See Note 7 for a discussion of counterparty risk associated with the Company’s derivative transactions.
Purchased Loans
Background and Accounting
We purchase loans in the ordinary course of business and account for them and the related interest income based on their performing status at the time of acquisition. PCI loans have evidence of credit deterioration at the time of acquisition and it is probable that not all contractual payments will be collected. Interest income for PCI loans is accounted for on an expected cash flow basis. Certain other loans acquired by the Company that are not credit-impaired include loans with revolving privileges and are excluded from the PCI tabular disclosures following. Interest income for these loans is accounted for on a contractual cash flow basis. Upon acquisition, in accordance with applicable accounting guidance, the acquired loans were recorded at their fair value without a corresponding ALLL. Certain acquired loans with similar characteristics such as risk exposure, type, size, etc., are grouped and accounted for in loan pools.
During 2009, CB&T and NSB acquired failed banks from the FDIC as receiver and entered into loss sharing agreements with the FDIC for the acquired loans and foreclosed assets. In general, the FDIC assumed 80% of credit losses up to a specified threshold and 95% above that threshold. The five-year agreements for commercial loans, which comprised the major portion of the covered portfolio, expire in 2014 through September 30. The ten-year agreements for single family residential loans, which are a small portion of the covered portfolio, will expire in 2019. Due to their declining balances, the “FDIC-supported loans” are included with “Loans and leases” in the Company’s balance sheet. However, they continue to be shown separately in this footnote and in other disclosures, and include both PCI and certain other acquired loans.
Outstanding Balances and Accretable Yield
The outstanding balances of all required payments and the related carrying amounts for PCI loans are as follows:
(In thousands)	March 31,			December 31,
	2014			2013
Commercial	$	130,834		$	150,191
Commercial real estate	173,714			233,720
Consumer	23,724			28,608
Outstanding balance	$	328,272		$	412,519
Carrying amount	$	249,563		$	311,797
ALLL	4,203			6,478
Carrying amount, net	$	245,360		$	305,319
At the time of acquisition of PCI loans, we determine the loan’s contractually required payments in excess of all cash flows expected to be collected as an amount that should not be accreted (nonaccretable difference). With respect to the cash flows expected to be collected, the portion representing the excess of the loan’s expected cash flows over our initial investment (accretable yield) is accreted into interest income on a level yield basis over the remaining expected life of the loan or pool of loans. The effects of estimated prepayments are considered in estimating the expected cash flows.
Certain PCI loans are not accounted for as previously described because the estimation of cash flows to be collected involves a high degree of uncertainty. Under these circumstances, the accounting guidance provides that interest income is recognized on a cash basis similar to the cost recovery methodology for nonaccrual loans. The net carrying amounts in the preceding schedule also include the amounts for these loans, which were not significant at March 31, 2014 and December 31, 2013.
Changes in the accretable yield for PCI loans were as follows:
(In thousands)	Three Months Ended
	March 31,
	2014			2013
Balance at beginning of period	$	77,528		$	134,461
Accretion	(22,307		)	(25,266		)
Reclassification from nonaccretable difference	8,920			14,872
Disposals and other	1,624			2,292
Balance at end of period	$	65,765		$	126,359
Note: Amounts have been adjusted based on refinements to the original estimates of the accretable yield. Because of the estimation process required, we expect that additional adjustments to these amounts may be necessary in future periods.
The primary drivers of reclassification to accretable yield from nonaccretable difference and increases in disposals and other resulted primarily from (1) changes in estimated cash flows, (2) unexpected payments on nonaccrual loans, and (3) recoveries on zero balance loans pools. See subsequent discussion under changes in cash flow estimates.
ALLL Determination
For all acquired loans, the ALLL is only established for credit deterioration subsequent to the date of acquisition and represents our estimate of the inherent losses in excess of the book value of acquired loans. The ALLL for acquired loans is determined without giving consideration to the amounts recoverable from the FDIC through loss sharing agreements. These amounts recoverable were separately accounted for in the FDIC indemnification asset (“IA”) and are thus presented “gross” in the balance sheet. The FDIC IA is included in other assets in the balance sheet and is discussed subsequently. The ALLL for acquired loans is included in the overall ALLL in the balance sheet. The provision for loan losses is reported net of changes in the amounts recoverable under the loss sharing agreements.
During the three months ended March 31, 2014, and 2013, we adjusted the ALLL for acquired loans by recording a negative provision for loan losses of $(2.7) million and $(9.6) million, respectively. The negative provision is net of the ALLL reversals discussed subsequently. As separately discussed and in accordance with the loss sharing agreements, portions of the provision reductions result in a corresponding decrease of the FDIC IA. For the three months ended March 31, 2014, and 2013, these adjustments resulted in net recoveries of $1.2 million and $0.9 million, respectively.
Changes in the provision for loan losses and related ALLL are driven in large part by the same factors that affect the changes in reclassification from nonaccretable difference to accretable yield, as discussed under changes in cash flow estimates.
Changes in Cash Flow Estimates
Over the life of the loan or loan pool, we continue to estimate cash flows expected to be collected. We evaluate quarterly at the balance sheet date whether the estimated present values of these loans using the effective interest rates have decreased below their carrying values. If so, we record a provision for loan losses.
For increases in carrying values that resulted from better-than-expected cash flows, we use such increases first to reverse any existing ALLL. During the three months ended March 31, total reversals to the ALLL were $2.9 million in 2014 and $9.7 million in 2013, respectively. When there is no current ALLL, we increase the amount of accretable yield on a prospective basis over the remaining life of the loan and recognize this increase in interest income. Any related decrease to the FDIC IA is recorded through a charge to other noninterest expense. Changes that increase cash flows have been due primarily to (1) the enhanced economic status of borrowers compared to original evaluations, (2) improvements in the Southern California market where the majority of these loans were originated, and (3) efforts by our credit officers and loan workout professionals to resolve problem loans.
For the three months ended March 31, the impact of increased cash flow estimates recognized in the statement of income for acquired loans with no ALLL was approximately $18.5 million in 2014 and $19.0 million in 2013, respectively, of additional interest income; and $16.0 million in 2014 and $20.3 million in 2013, respectively, of additional other noninterest expense due to the reduction of the FDIC IA.
FDIC Indemnification Asset
The balance of the FDIC IA was 13.2 million at March 31, 2014 and 26.4 million at December 31, 2013. In accordance with applicable accounting guidance, the balance will reduce to a de minimus level by September 30, 2014 when the final commercial loan loss sharing agreement expires. The remaining amount of the FDIC IA will relate to the residential loan loss sharing agreements and to in-process amounts with the FDIC.

Derivative_Instruments_And_Hed

Derivative Instruments And Hedging Activities	3 Months Ended
	Mar. 31, 2014
Summary of Derivative Instruments [Abstract]	'
Derivative Instruments And Hedging Activities	'
		DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES
	We record all derivatives on the balance sheet at fair value. Note 10 discusses the process to estimate fair value for derivatives. The accounting for changes in the fair value of derivatives depends on the intended use of the derivative and the resulting designation. Derivatives used to hedge the exposure to changes in the fair value of an asset, liability, or firm commitment attributable to a particular risk, such as interest rate risk, are considered fair value hedges. Derivatives used to hedge the exposure to variability in expected future cash flows, or other types of forecasted transactions, are considered cash flow hedges.
	For derivatives designated as fair value hedges, the effective portion of changes in the fair value of the derivative are recognized in earnings together with changes in the fair value of the related hedged item. The net amount, if any, representing hedge ineffectiveness, is reflected in earnings. In previous periods, we used fair value hedges to manage interest rate exposure to certain long-term debt. These hedges have been terminated and their remaining balances are being amortized to earnings, as discussed subsequently.
	For derivatives designated as cash flow hedges, the effective portion of changes in the fair value of the derivative is recorded in OCI and recognized in earnings when the hedged transaction affects earnings. The ineffective portion of changes in the fair value of cash flow hedges is recognized directly in earnings.
	No derivatives have been designated for hedges of investments in foreign operations.
	We assess the effectiveness of each hedging relationship by comparing the changes in fair value or cash flows on the derivative hedging instrument with the changes in fair value or cash flows on the designated hedged item or transaction. For derivatives not designated as accounting hedges, changes in fair value are recognized in earnings.
	Our objectives in using derivatives are to add stability to interest income or expense, to modify the duration of specific assets or liabilities as we consider advisable, to manage exposure to interest rate movements or other identified risks, and/or to directly offset derivatives sold to our customers. To accomplish these objectives, we use interest rate swaps as part of our cash flow hedging strategy. These derivatives are used to hedge the variable cash flows associated with designated loans.
	Exposure to credit risk arises from the possibility of nonperformance by counterparties. These counterparties primarily consist of financial institutions that are well established and well capitalized. We control this credit risk through credit approvals, limits, pledges of collateral, and monitoring procedures. No losses on derivative instruments have occurred as a result of counterparty nonperformance. Nevertheless, the related credit risk is considered and measured when and where appropriate.
	Our derivative contracts require us to pledge collateral for derivatives that are in a net liability position at a given balance sheet date. Certain of these derivative contracts contain credit-risk-related contingent features that include the requirement to maintain a minimum debt credit rating. We may be required to pledge additional collateral if a credit-risk-related feature were triggered, such as a downgrade of our credit rating. However, in past situations, not all counterparties have demanded that additional collateral be pledged when provided for under their contracts. At March 31, 2014, the fair value of our derivative liabilities was $62.6 million, for which we were required to pledge cash collateral of approximately $38.5 million in the normal course of business. If our credit rating were downgraded one notch by either Standard & Poor’s or Moody’s at March 31, 2014, the additional amount of collateral we could be required to pledge is approximately $1.4 million. Since July 2013, as required by the Dodd-Frank Act, all new eligible derivatives entered into are cleared through a central clearinghouse. Derivatives that are centrally cleared do not have credit-risk-related features that require additional collateral if our credit rating were downgraded.
	Interest rate swap agreements designated as cash flow hedges involve the receipt of fixed-rate amounts in exchange for variable-rate payments over the life of the agreements without exchange of the underlying principal amount. Derivatives not designated as accounting hedges, including basis swap agreements, are not speculative and are used to economically manage our exposure to interest rate movements and other identified risks, but do not meet the strict hedge accounting requirements.
	Selected information with respect to notional amounts and recorded gross fair values at March 31, 2014 and December 31, 2013, and the related gain (loss) of derivative instruments for the three months ended March 31, 2014 and 2013 is summarized as follows:
		March 31, 2014							December 31, 2013
		Notional		Fair value					Notional		Fair value
	(In thousands)	amount		Other		Other			amount		Other			Other
				assets		liabilities					assets			liabilities
	Derivatives designated as hedging instruments
	Asset derivatives
	Cash flow hedges:
	Interest rate swaps	$	150,000	$	298	$	492		$	100,000	$	202		$	583
	Total derivatives designated as hedging instruments	150,000		298		492			100,000		202			583
	Derivatives not designated as hedging instruments
	Interest rate swaps	60,967		332		286			65,850		420			421
	Interest rate swaps for customers 2	2,900,444		50,644		51,000			2,902,776		55,447			54,688
	Foreign exchange	434,058		6,409		5,412			751,066		9,614			8,643
	Total return swap	1,159,686		—		5,399			1,159,686		—			4,062
	Total derivatives not designated as hedging instruments	4,555,155		57,385		62,097			4,879,378		65,481			67,814
	Total derivatives	$	4,705,155	$	57,683	$	62,589		$	4,979,378	$	65,683		$	68,397
		Three Months Ended March 31, 2014									Three Months Ended March 31, 2013
		Amount of derivative gain (loss) recognized/reclassified
	(In thousands)	OCI		Reclassified		Noninterest			Offset to		OCI			Reclassified		Noninterest			Offset to
				from AOCI		income			interest					from AOCI		income			interest
				to interest		(expense)			expense					to interest		(expense)			expense
				income 3										income 3
	Derivatives designated as hedging instruments
	Asset derivatives
	Cash flow hedges 1:
	Interest rate swaps	$	538	$	351	$	—				$	(4	)	$	1,605	$	—
		538		351		—					(4		)	1,605		—
	Liability derivatives
	Fair value hedges:
	Terminated swaps on long-term debt								$	718									$	766
	Total derivatives designated as hedging instruments	538		351		—			718		(4		)	1,605		—			766
	Derivatives not designated as hedging instruments
	Interest rate swaps					6										(67		)
	Interest rate swaps for customers 2					(549		)								1,458
	Futures contracts					—										1
	Foreign exchange					1,711										2,754
	Total return swap					(7,427		)								(5,558		)
	Total derivatives not designated as hedging instruments					(6,259		)								(1,412		)
	Total derivatives	$	538	$	351	$	(6,259	)	$	718	$	(4	)	$	1,605	$	(1,412	)	$	766
	Note: These schedules are not intended to present at any given time the Company’s long/short position with respect to its derivative contracts.
	1 Amounts recognized in OCI and reclassified from accumulated OCI (“AOCI”) represent the effective portion of the derivative gain (loss).
	2	Amounts include both the customer swaps and the offsetting derivative contracts.
	3 Amounts for the three months ended March 31 2014 and 2013 of $0.4 million and $1.6 million, respectively, are the amounts of reclassification to earnings from AOCI presented in Note 8.
	At March 31, the fair values of derivative assets and liabilities were reduced (increased) by net credit valuation adjustments of $1.6 million and $1.2 million in 2014, and $3.0 million and $(0.1) million in 2013, respectively. These adjustments are required to reflect both our own nonperformance risk and the respective counterparty’s nonperformance risk.
	We offer interest rate swaps to our customers to assist them in managing their exposure to changing interest rates. Upon issuance, all of these customer swaps are immediately “hedged” by offsetting derivative contracts, such that the Company minimizes its net risk exposure resulting from such transactions. Fee income from customer swaps is included in other service charges, commissions and fees. As with other derivative instruments, we have credit risk for any nonperformance by counterparties.
	The remaining balances of any derivative instruments terminated prior to maturity, including amounts in AOCI for swap hedges, are accreted or amortized to interest income or expense over the period corresponding to their previously stated maturity dates.
	Amounts in AOCI are reclassified to interest income as interest is earned on variable rate loans and as amounts for terminated hedges are accreted or amortized to earnings. For the 12 months following March 31, 2014, we estimate that an additional $1.3 million will be reclassified.
	Total Return Swap
	Since July 28, 2010, we had a total return swap and related interest rate swaps (“TRS”) with Deutsche Bank AG (“DB”) relating to a portfolio of $1.16 billion par amount of our bank and insurance trust preferred CDOs. As a result of the TRS, DB had assumed all of the credit risk of this CDO portfolio, providing timely payment of all scheduled payments of interest and principal when contractually due to the Company (without regard to acceleration or deferral events). The transaction reduced regulatory risk-weighted assets and improved the Company’s risk-based capital ratios.
	The fair value of the TRS derivative liability was $5.4 million at March 31, 2014 and $4.1 million at December 31, 2013.
	Effective April 28, 2014, we canceled the TRS and will recognize approximately $0.5 million of TRS expenses during the second quarter of 2014 beyond that already accrued. At March 31, 2014, the par amount of the portfolio covered by the TRS was $545 million, or less than half of the original balance. This significant decrease was due to intervening CDO sales, paydowns and payoffs, as discussed in Note 5, and led to our cancellation of the TRS. At March 31, 2014, the TRS reduced risk-weighted assets by approximately $1 billion. We expect that, absent significant additional sales or paydowns, this cancellation will increase risk weighted assets by a similar amount at the end of the second quarter of 2014.

Debt_And_Shareholders_Equity

Debt And Shareholders' Equity	3 Months Ended
	Mar. 31, 2014
Capitalization, Long-term Debt and Equity [Abstract]	'
Debt And Shareholders' Equity	'
	DEBT AND SHAREHOLDERS’ EQUITY
	Debt Redemptions
	During the three months ended March 31, 2014 under our senior medium-term note program, we redeemed $125 million of long-term notes. At March 31, 2014, the outstanding notes in this program amounted to $210.8 million, with interest rates from 2.55% to 5.50% and maturities through November 2019.
	Accumulated Other Comprehensive Income
	Changes in AOCI by component are as follows:
	(In thousands)	Net unrealized gains (losses) on investment securities						Net unrealized gains (losses) on derivative instruments					Pension and post-retirement			Total
	Three Months Ended March 31, 2014
	Balance at December 31, 2013		$	(167,032	)				$	(217	)		$	(24,852	)	$	(192,101	)
	Other comprehensive income before reclassifications, net of tax		71,066						320				—			71,386
	Amounts reclassified from AOCI, net of tax		(24,537		)				(210		)		—			(24,747		)
	Other comprehensive income		46,529						110				—			46,639
	Balance at March 31, 2014		$	(120,503	)				$	(107	)		$	(24,852	)	$	(145,462	)
	Income tax expense included in other comprehensive income		$	38,636					$	77			$	—		$	38,713
	Three Months Ended March 31, 2013
	Balance at December 31, 2012		$	(397,616	)				$	1,794			$	(50,335	)	$	(446,157	)
	Other comprehensive income (loss) before reclassifications, net of tax		36,042						(2		)		—			36,040
	Amounts reclassified from AOCI, net of tax		4,171						(957		)		—			3,214
	Other comprehensive income (loss)		40,213						(959		)		—			39,254
	Balance at March 31, 2013		$	(357,403	)				$	835			$	(50,335	)	$	(406,903	)
	Income tax expense (benefit) included in other comprehensive income (loss)		$	23,853					$	(650	)		$	—		$	23,203
		Amounts reclassified from AOCI 1								Statement of income (SI) Balance sheet
	(In thousands)	Three Months Ended March 31,								(BS)
	Details about AOCI components	2014				2013						Affected line item
	Net realized gains on investment securities	$	30,914			$	3,299			SI		Fixed income securities gains, net
	Income tax expense	6,074				1,262
		24,840				2,037
	Net unrealized losses on investment	(27		)		(9,714		)		SI		Net impairment losses on investment securities
	securities
	Income tax benefit	(10		)		(3,715		)
		(17		)		(5,999		)
	Accretion of securities with noncredit-related impairment losses not expected to be sold	(482		)		(344		)		BS		Investment securities, held-to-maturity
	Deferred income taxes	196				135				BS		Other assets
		$	24,537			$	(4,171	)
	Net unrealized gains on derivative instruments	$	351			$	1,605			SI		Interest and fees on loans
	Income tax expense	141				648
		$	210			$	957
	1 Negative reclassification amounts indicate decreases to earnings in the statement of income and increases to balance sheet assets. The opposite applies to positive reclassification amounts.
	Basel III Capital Framework
	The Federal Reserve has published final rules establishing a new capital framework for U.S. banking organizations. These new rules implement the Basel Committee’s December 2010 framework, commonly referred to as Basel III, which will become effective for the Company on January 1, 2015, with the fully phased-in requirements becoming effective in 2018.
	Among other things, the new rules revise capital adequacy guidelines and the regulatory framework for prompt corrective action, and they modify specified quantitative measures of our assets, liabilities, and capital. The impact of these new rules will require the Company to maintain capital in excess of current “well-capitalized” regulatory standards, and in excess of historical levels.

Income_Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2014
Income Tax Disclosure [Abstract]	'
Income Taxes	'
		INCOME TAXES
	Income tax expense for the three months ended March 31, 2014 and 2013 was lower than the blended statutory rate of 38.25% primarily because of the non-taxability of certain income items.
	Net deferred tax assets were approximately $187 million at March 31, 2014 and $304 million at December 31, 2013. We evaluate net deferred tax assets on a regular basis to determine whether an additional valuation allowance is required. Based on this evaluation, and considering the weight of the positive evidence compared to the negative evidence, we have concluded that an additional valuation allowance is not required as of March 31, 2014.

Fair_Value

Fair Value	3 Months Ended
	Mar. 31, 2014
Fair Value Disclosures [Abstract]	'
Fair Value	'
	Fair Value Measurement
	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. To measure fair value, a hierarchy has been established that requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs. This hierarchy uses three levels of inputs to measure the fair value of assets and liabilities as follows:
	Level 1 – Quoted prices in active markets for identical assets or liabilities in active markets that the Company has the ability to access;
	Level 2 – Observable inputs other than Level 1 including quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in less active markets, observable inputs other than quoted prices that are used in the valuation of an asset or liability, and inputs that are derived principally from or corroborated by observable market data by correlation or other means; and
	Level 3 – Unobservable inputs supported by little or no market activity for financial instruments whose value is determined by pricing models, discounted cash flow methodologies, or similar techniques, as well as instruments for which the determination of fair value requires significant management judgment or estimation.
	The level in the fair value hierarchy within which the fair value measurement is classified is determined based on the lowest level input that is significant to the fair value measure in its entirety. Market activity is presumed to be orderly in the absence of evidence of forced or disorderly sales, although such sales may still be indicative of fair value. Applicable accounting guidance precludes the use of blockage factors or liquidity adjustments due to the quantity of securities held by an entity.
	We use fair value to measure certain assets and liabilities on a recurring basis when fair value is the primary measure for accounting. Fair value is used on a nonrecurring basis to measure certain assets when adjusting carrying values, such as the application of lower of cost or fair value accounting, including recognition of impairment on assets. Fair value is also used when providing required disclosures for certain financial instruments.
	Fair Value Policies and Procedures
	We have various policies, processes and controls in place to ensure that fair values are reasonably developed, reviewed and approved for use. These include a Securities Valuation and Securitization Oversight Committee (“SOC”) comprised of executive management that reports directly to the Board of Directors. The SOC reviews and approves on a quarterly basis the key components of fair value estimation, including critical valuation assumptions for Level 3 modeling. Attribution analyses are completed when significant changes occur between quarters. The SOC also requires quarterly back testing of certain significant assumptions. A Model Risk Management Group conducts model validations, including the internal model, and sets policies and procedures for revalidation, including the timing of revalidation.
	Third Party Service Providers
	We use a third party pricing service to provide pricing for approximately 89% of our AFS Level 2 securities, and an internal model to estimate fair value for approximately 98% of our AFS Level 3 securities. Fair values for the remaining AFS Level 2 and Level 3 securities generally use standard form discounted cash flow modeling with certain inputs corroborated by market data.
	For Level 2 securities, the third party pricing service provides documentation on an ongoing basis that presents market corroborative data, including detail pricing information and market reference data. The documentation includes benchmark yields, reported trades, broker/dealer quotes, issuer spreads, two-sided markets, benchmark securities, bids, offers, and reference data, including information from the vendor trading platform. We review, test and validate this information as appropriate.
	For Level 3 securities, we review and evaluate on a quarterly basis the relevant third party modeling assumptions. These include PDs, loss-given-default rates, over-collateralization levels, and rating transition probability matrices from ratings agencies. In addition, we also compare the results and valuation with our information about market trends and trading data. This includes information regarding trading prices, implied discounts, outlier information, valuation assumptions, etc.
	Absent observable trade data, we do not adjust prices from our third party sources. The procedures described help ensure that resulting fair value estimates were determined in accordance with applicable accounting guidance.
	The following describes the hierarchy designations, valuation methodologies, and key inputs to measure fair value on a recurring basis for designated financial instruments:
	Available-for-Sale and Trading
	U.S. Treasury, Agencies and Corporations
	U.S. Treasury securities are measured under Level 1 using quoted market prices. U.S. agencies and corporations are measured under Level 2 generally using the previously-discussed third party pricing service.
	Municipal Securities
	Municipal securities are measured under Level 2 using the third party pricing service, or under Level 3 using a discounted cash flow approach. Valuation inputs include BBB and Baa municipal curves, as well as FHLB and London Interbank Offered Rate (“LIBOR”) swap curves. Additional valuation inputs include internal credit scoring, and security- and client-type groupings.
	Asset-Backed Securities: Trust Preferred Collateralized Debt Obligations
	The majority of the CDO portfolio is measured under Level 3 primarily with the internal model using an income-based cash flow modeling approach incorporating several methodologies. The Company inputs its own key valuation assumptions:
	Trust preferred – banks and insurance – We primarily use an internal model for our bank and insurance CDO securities. Our “ratio-based approach” utilizes a statistical regression of regulatory ratios we have identified as predictive of future bank failures and bank holding company defaults to create a credit-specific PD for each bank issuer. The approach generally references trailing quarter regulatory data, financial ratios and macroeconomic factors.
	The PDs used depend on whether the collateral is performing or deferring. Deferring PDs increase, all else being equal, as the deferral ages and approaches the end of its allowable five-year deferral period. The internal model includes the expectation that deferrals that do not default will pay their contractually required back interest and return to a current status at the end of five years. Estimates of loss for the individual pieces of underlying collateral are aggregated to arrive at a pool-level loss rate for each CDO. These loss assumptions are applied to the CDO’s structure to generate cash flow projections for each tranche of the CDO.
	We utilize a present value technique to identify both the OTTI present in the CDO tranches and to estimate fair value. To estimate fair value, we discount the credit-adjusted cash flows of each CDO tranche at a tranche-specific discount rate derived from trading data and a measure of the credit risk in the CDO tranche. Because these securities are not traded on exchanges and trading prices are not posted on the TRACE® system (Trade Reporting and Compliance Engine®), we seek information from market participants to obtain trade price information.
	Trading data is generally limited and may include trades of tranches within our same CDO. We use this limited trade data along with our modeled expected credit adjusted cash flows to determine a relationship between the market required yield and the downside variability of the returns of each CDO security. The loss/downside variability for this purpose is a measure of the downside variability of cash flows from the mean estimate of cash flow.
	During the three months ended March 31, 2014, as shown in the Level 3 reconciliation schedules following, two insurance CDO securities and two single-name bank trust preferred securities, were transferred from Level 3 to Level 2 primarily due to the increasing ability to utilize fair value inputs corroborated by observed market data. The securities constitute the Company’s entire holding of each asset class.
	Trust preferred – REITS, Other – During the three months ended March 31, 2014, substantially all of these securities were sold, as discussed in Note 5.
	Auction Rate Securities
	Auction rate securities are measured under Level 3 primarily using valuation inputs that include AAA corporate bond yield curves, municipal yield curves, credit ratings and leverage of each closed-end fund, market yields for commercial paper, and any observable trade commentaries.
	Bank-Owned Life Insurance
	Bank-owned life insurance is measured under Level 2 according to cash surrender values (“CSVs”) of the insurance contracts that are provided by a third party service. Nearly all CSVs are computed based on valuations and earnings of the underlying assets in the insurance companies’ general accounts. The underlying investments include predominantly fixed income securities consisting of investment grade corporate bonds and various types of mortgage instruments. Average duration ranges from five to eight years. Management regularly reviews investment performance, including concentrations of investments and regulatory restrictions.
	Private Equity Investments
	Private equity investments are measured under Level 2 or Level 3. The Other Equity Investments Committee, consisting of executives familiar with the investments, reviews periodic financial information, including audited financial statements when available. The amount of unfunded commitments to these partnerships is disclosed in Note 11. Certain restrictions apply for the redemption of these investments. Approximately $59 million of private equity investments at March 31, 2014 are prohibited by the Volcker Rule.
	Private equity investments under Level 2 include partnerships that invest in certain financial services and real estate companies, some of which are publicly traded. Fair values are determined from net asset values, or their equivalents, provided by the partnerships. These fair values are determined on the last business day of the month using values from the primary exchange. In the case of illiquid or nontraded assets, the partnerships obtain fair values from independent sources.
	Private equity investments are measured under Level 3 primarily using current and projected financial performance, recent financing activities, economic and market conditions, market comparables, market liquidity, sales restrictions, and other factors.
	Agriculture Loan Servicing
	This asset results from our servicing of agriculture loans approved by the Federal Agricultural Mortgage Corporation (“FAMC,” or “Farmer Mac”) and funded by them. We provide this servicing under an agreement with Farmer Mac for loans they own. The asset’s fair value represents our projection of the present value of future cash flows measured under Level 3 using discounted cash flow methodologies.
	Interest-Only Strips
	Interest-only strips are created as a by-product of the securitization process. When the guaranteed portion of Small Business Administration (“SBA”) 7(a) loans are pooled, interest-only strips may be created in the pooling process. The asset’s fair value represents our projection of the present value of future cash flows measured under Level 3 using discounted cash flow methodologies.
	Deferred Compensation Plan Assets and Obligations
	Invested assets in the deferred compensation plan consists of shares of registered investment companies. These mutual funds are valued under Level 1 at quoted market prices, which represents the net asset value of shares held by the plan at the end of the period.
	Derivatives
	Derivatives are measured according to their classification as either exchange-traded or over-the-counter (“OTC”). Exchange-traded derivatives consist of forward currency exchange contracts measured under Level 1 because they are traded in active markets. OTC derivatives, including those for customers, consist of interest rate swaps and options. These derivatives are measured under Level 2 using third party services. Observable market inputs include yield curves (the LIBOR swap curve and applicable basis swap curves), foreign exchange rates, commodity prices, option volatilities, counterparty credit risk, and other related data. Credit valuation adjustments are required to reflect nonperformance risk for both the Company and the respective counterparty. These adjustments are determined generally by applying a credit spread to the total expected exposure of the derivative.
	Securities Sold, Not Yet Purchased
	Securities sold, not yet purchased, are measured under Level 1 using quoted market prices. If not available, quoted prices under Level 2 for similar securities are used.
	Quantitative Disclosure of Fair Value Measurements
	Assets and liabilities measured at fair value by class on a recurring basis are summarized as follows:
	(In thousands)	March 31, 2014
		Level 1			Level 2			Level 3				Total
	ASSETS
	Investment securities:
	Available-for-sale:
	U.S. Treasury, agencies and corporations				$	2,252,014						$	2,252,014
	Municipal securities				141,222			$	10,184			151,406
	Asset-backed securities:
	Trust preferred – banks and insurance				69,194			690,217				759,411
	Trust preferred – real estate investment trusts							—				—
	Auction rate							6,560				6,560
	Other				1,722			30				1,752
	Mutual funds and stock	$	231,405		20,657							252,062
		231,405			2,484,809			706,991				3,423,205
	Trading account				56,172							56,172
Other noninterest-bearing investments:
Bank-owned life insurance				469,241							469,241
Private equity				4,923			81,052				85,975
Other assets:
Agriculture loan servicing and interest-only strips							11,207				11,207
Deferred compensation plan assets	88,606										88,606
Derivatives:
Interest rate related and other				630							630
Interest rate swaps for customers				50,644							50,644
Foreign currency exchange contracts	6,409										6,409
	6,409			51,274							57,683
	$	326,420		$	3,066,419		$	799,250			$	4,192,089
LIABILITIES
Securities sold, not yet purchased	$	1,340									$	1,340
Other liabilities:
Deferred compensation plan obligations	88,606										88,606
Derivatives:
Interest rate related and other				$	778						778
Interest rate swaps for customers				51,000							51,000
Foreign currency exchange contracts	5,412										5,412
Total return swap							$	5,399			5,399
	5,412			51,778			5,399				62,589
Other							233				233
	$	95,358		$	51,778		$	5,632			$	152,768
(In thousands)	December 31, 2013
	Level 1			Level 2			Level 3				Total
ASSETS
Investment securities:
Available-for-sale:
U.S. Treasury, agencies and corporations	$	—		$	2,059,105						$	2,059,105
Municipal securities				55,602			$	10,662			66,264
Asset-backed securities:
Trust preferred – banks and insurance				—			1,238,820				1,238,820
Trust preferred – real estate investment trusts							22,996				22,996
Auction rate							6,599				6,599
Other				2,099			25,800				27,899
Mutual funds and stock	259,750			20,453							280,203
	259,750			2,137,259			1,304,877				3,701,886
Trading account				34,559							34,559
Other noninterest-bearing investments:
Bank-owned life insurance				466,428							466,428
Private equity				4,822			82,410				87,232
Other assets:
Agriculture loan servicing and interest-only strips							8,852				8,852
Deferred compensation plan assets	86,184										86,184
Derivatives:
Interest rate related and other				622							622
Interest rate swaps for customers				55,447							55,447
Foreign currency exchange contracts	9,614										9,614
	9,614			56,069							65,683
	$	355,548		$	2,699,137		$	1,396,139			$	4,450,824
LIABILITIES
Securities sold, not yet purchased	$	73,606									$	73,606
Other liabilities:
Deferred compensation plan obligations	86,184										86,184
Derivatives:
Interest rate related and other				$	1,004						1,004
Interest rate swaps for customers				54,688							54,688
Foreign currency exchange contracts	8,643										8,643
Total return swap							$	4,062			4,062
	8,643			55,692			4,062				68,397
Other							241				241
	$	168,433		$	55,692		$	4,303			$	228,428
The fair value of the Level 3 bank and insurance CDO portfolio would generally be adversely affected by significant increases in the constant default rate (“CDR”) for performing collateral, the loss percentage expected from deferring collateral, and the discount rate used. The fair value of the portfolio would generally be positively affected by increases in interest rates and prepayment rates. For a specific tranche within a CDO, the directionality of the fair value change for a given assumption change may differ depending on the seniority level of the tranche. For example, faster prepayment may increase the fair value of a senior most tranche of a CDO while decreasing the fair value of a more junior tranche.
Reconciliation of Level 3 Fair Value Measurements
The following reconciles the beginning and ending balances of assets and liabilities that are measured at fair value by class on a recurring basis using Level 3 inputs:
	Level 3 Instruments
	Three Months Ended March 31, 2014
(In thousands)	Municipal			Trust			Trust				Auction				Other			Private			Ag loan svcg and int-only strips			Derivatives
	securities			preferred – banks and insurance			preferred				rate				asset-backed			equity						and other
							– REIT											investments						liabilities
Balance at December 31, 2013	$	10,662		$	1,238,820		$	22,996			$	6,599			$	25,800		$	82,410		$	8,852		$	(4,303	)
Net gains (losses) included in:
Statement of income:
Accretion of purchase discount on securities available-for-sale	10			720							1
Dividends and other investment income																		(1,695		)
Fair value and nonhedge derivative loss																								(7,427		)
Fixed income securities gains, net	16			18,582			1,399								10,917
Other noninterest income																					481
Other noninterest expense																								8
Other comprehensive income	(274		)	94,462							(40		)		(15		)
Purchases																		1,356			2,077
Sales				(546,388		)	(24,395		)						(36,669		)	(824		)
Redemptions and paydowns	(230		)	(46,786		)									(3		)	(195		)	(203		)	6,090
Transfers to Level 2				(69,193		)
Balance at March 31, 2014	$	10,184		$	690,217		$	—			$	6,560			$	30		$	81,052		$	11,207		$	(5,632	)
	Level 3 Instruments
	Three Months Ended March 31, 2013
(In thousands)	Municipal			Trust			Trust				Auction				Other			Private			Ag loan svcg and int-only strips			Derivatives
	securities			preferred – banks and insurance			preferred – REIT				rate				asset-backed			equity						and other
																		investments						liabilities
Balance at December 31, 2012	$	16,551		$	949,271		$	16,403			$	6,515			$	15,160		$	64,223		$	8,334		$	(5,251	)
Net gains (losses) included in:
Statement of income:
Accretion of purchase discount on securities available-for-sale	21			815			63				1				5
Dividends and other investment income																		2,989
Fair value and nonhedge derivative loss																								(5,558		)
Equity securities gains, net																		2,399
Fixed income securities gains, net	21			3,226											30
Net impairment losses on investment securities				(9,714		)
Other noninterest income																					119
Other noninterest expense																								(71		)
Other comprehensive income	725			78,650			840				8				2,651
Purchases																		959
Sales																		(733		)
Redemptions and paydowns	(275		)	(19,146		)									(2,453		)	(131		)	(201		)	5,810
Balance at March 31, 2013	$	17,043		$	1,003,102		$	17,306			$	6,524			$	15,393		$	69,706		$	8,252		$	(5,070	)
The preceding reconciling amounts using Level 3 inputs include the following realized gains:
	(In thousands)	Three Months Ended March 31,
		2014			2013
	Dividends and other investment income	$	34		$	15
	Fixed income securities gains, net	30,914			3,277
Except as previously discussed, no other transfers of assets or liabilities occurred among Levels 1, 2 or 3 for the three months ended March 31, 2014 and 2013. Transfers are considered to have occurred as of the end of the reporting period.
Following is a summary of quantitative information relating to the principal valuation techniques and significant unobservable inputs for Level 3 instruments measured on a recurring basis:
	Level 3 Instruments
	Quantitative information at March 31, 2014
(Dollar amounts in thousands)	Fair value			Principal valuation techniques		Significant unobservable inputs	Range of inputs
							(% annually)
Asset-backed securities:
Trust preferred – predominantly banks 1	$	744,840		Discounted cash flow		Constant prepayment rate	until 2016 – 5.50% to 23.30%
				Market comparables
							2016 to maturity – 3.0%
						Constant default rate	yr 1 – 0.30% to 2.17%
							yrs 2-5 – 0.48% to 0.82 %
							yrs 6 to maturity – 0.59% to 0.65%
						Loss given default	100%
						Loss given deferral	13.56% to 100%
						Discount rate	5.3% to 5.6%
						(spread over forward LIBOR)
1 Amount consists of $690.2 million AFS and $54.6 million HTM.
	Level 3 Instruments
	Quantitative information at December 31, 2013
(Dollar amounts in thousands)	Fair value			Principal valuation techniques		Significant unobservable inputs	Range of inputs
							(% annually)
Asset-backed securities:
Trust preferred – predominantly banks	$	921,819		Discounted cash flow		Constant prepayment rate	until 2016 – 5.50% to 20.73%
				Market comparables
							2016 to maturity – 3.0%
						Constant default rate	yr 1 – 0.30% to 1.94%
							yrs 2-5 – 0.49% to 1.14%
							yrs 6 to maturity – 0.58% to 0.65%
						Loss given default	100%
						Loss given deferral	14.39% to 100%
						Discount rate	5.6% to 7.7%
						(spread over forward LIBOR)
Trust preferred – predominantly insurance	346,390			Discounted cash flow		Constant prepayment rate	until maturity – 5.0%
				Market comparables
						Constant default rate	yr 1 – 0.38% to 1.03%
							yrs 2-5 – 0.53% to 0.89%
							yrs 6 to maturity – 0.50% to 0.55%
						Loss given default	100%
						Loss given deferral	2.18% to 30.13%
						Discount rate	3.72% to 6.49%
						(spread over forward LIBOR)
Trust preferred – individual banks	22,324			Market comparables		Yield	6.6% to 7.8%
						Price	81.25% to 109.6%
Trust preferred – real estate investment trust	22,996			Discounted cash flow		Constant prepayment rate	until maturity – 0.0%
				Market comparables
						Constant default rate	yr 1 – 4.1% to 10.6%
							yrs 2-3 – 4.6% to 5.5%
							yrs 4-6 – 1.0%
							yrs 7 to maturity – 0.50%
						Loss given default	60% to 100%
						Discount rate	5.5% to 15%
						(spread over forward LIBOR)
Other (predominantly ABS CDOs)	25,800			Discounted cash flow		Constant default rate	0.01% to 100%
						Loss given default	70% to 92%
						Discount rate	9% to 22%
						(spread over forward LIBOR)
Nonrecurring Fair Value Measurements
Included in the balance sheet amounts are the following amounts of assets that had fair value changes measured on a nonrecurring basis.
(In thousands)	Fair value at March 31, 2014														Fair value at December 31, 2013
	Level 1			Level 2			Level 3				Total				Level 1			Level 2			Level 3			Total
ASSETS
HTM securities adjusted for OTTI	$	—		$	—		$	71			$	71			$	—		$	—		$	8,483		$	8,483
Private equity investments, carried at cost	—			—			—				—				—			—			13,270			13,270
Impaired loans	—			21,943			—				21,943				—			11,765			—			11,765
Other real estate owned	—			13,720			—				13,720				—			24,684			—			24,684
	$	—		$	35,663		$	71			$	35,734			$	—		$	36,449		$	21,753		$	58,202
The previous fair values may not be current as of the dates indicated, but rather as of the date the fair value change occurred, such as a charge for impairment. Accordingly, carrying values may not equal current fair value.
	Gains (losses) from fair value changes
(In thousands)	Three Months Ended
	March 31,
	2014			2013
ASSETS
HTM securities adjusted for OTTI	$	(27	)	$	(403	)
Private equity investments, carried at cost	—			(820		)
Impaired loans	(2,177		)	(883		)
Other real estate owned	(2,234		)	(4,691		)
	$	(4,438	)	$	(6,797	)
During the three months ended March 31, we recognized net gains of $1.0 million in 2014 and $3.9 million in 2013 from the sale of other real estate owned (“OREO”) properties that had a carrying value at the time of sale of approximately $10.0 million and $22.0 million, respectively. Previous to their sale in these periods, we recognized impairment on these properties of $0.2 million in 2014 and $0.1 million in 2013.
HTM securities adjusted for OTTI were measured at fair value using the same methodology for trust preferred CDO securities.
Private equity investments carried at cost were measured at fair value for impairment purposes according to the methodology previously discussed for these investments. Amounts of private equity investments carried at cost were $50.4 million at March 31, 2014 and $53.6 million at December 31, 2013. Amounts of other noninterest-bearing investments carried at cost were $243.1 million at March 31, 2014 and $248.4 million at December 31, 2013, which were comprised of Federal Reserve, Federal Home Loan Bank, and Farmer Mac stock.
Impaired (or nonperforming) loans that are collateral-dependent were measured at fair value based on the fair value of the collateral. OREO was measured at fair value at the lower of cost or fair value based on property appraisals at the time the property is recorded in OREO and as appropriate thereafter.
Measurement of fair value for collateral-dependent loans and OREO was based on third party appraisals that utilize one or more valuation techniques (income, market and/or cost approaches). Any adjustments to calculated fair value were made based on recently completed and validated third party appraisals, third party appraisal services, automated valuation services, or our informed judgment. Evaluations were made to determine that the appraisal process met the relevant concepts and requirements of applicable accounting guidance.
Automated valuation services may be used primarily for residential properties when values from any of the previous methods were not available within 90 days of the balance sheet date. These services use models based on market, economic, and demographic values. The use of these models has only occurred in a very few instances and the related property valuations have not been significant to consider disclosure under Level 3 rather than Level 2.
Impaired loans not collateral-dependent were measured at fair valued based on the present value of future cash flows discounted at the expected coupon rates over the lives of the loans. Because the loans were not discounted at market interest rates, the valuations do not represent fair value and have been excluded from the nonrecurring fair value balance in the preceding schedules.
Fair Value of Certain Financial Instruments
Following is a summary of the carrying values and estimated fair values of certain financial instruments:
	March 31, 2014								December 31, 2013
(In thousands)	Carrying			Estimated			Level		Carrying				Estimated				Level
	value			fair value					value				fair value
Financial assets:
HTM investment securities	$	606,279		$	635,379		3		$	588,981			$	609,547			3
Loans and leases (including loans held for sale), net of allowance	38,587,527			38,333,815			3		38,468,402				38,088,242				3
Financial liabilities:
Time deposits	2,528,735			2,536,904			2		2,593,038				2,602,955				2
Foreign deposits	1,648,111			1,647,876			2		1,980,161				1,979,805				2
Long-term debt (less fair value hedges)	2,155,606			2,301,239			2		2,269,762				2,423,643				2
This summary excludes financial assets and liabilities for which carrying value approximates fair value. For financial assets, these include cash and due from banks and money market investments. For financial liabilities, these include demand, savings and money market deposits, and federal funds purchased and security repurchase agreements. The estimated fair value of demand, savings and money market deposits is the amount payable on demand at the reporting date. Carrying value is used because the accounts have no stated maturity and the customer has the ability to withdraw funds immediately. Also excluded from the summary are financial instruments recorded at fair value on a recurring basis, as previously described.
HTM investment securities primarily consist of municipal securities and bank and insurance trust preferred CDOs. They were measured at fair value according to the methodologies previously discussed for these investment types.
Loans are measured at fair value according to their status as nonimpaired or impaired. For nonimpaired loans, fair value is estimated by discounting future cash flows using the LIBOR yield curve adjusted by a factor which reflects the credit and interest rate risk inherent in the loan. These future cash flows are then reduced by the estimated “life-of-the-loan” aggregate credit losses in the loan portfolio. These adjustments for lifetime future credit losses are derived from the methods used to estimate the ALLL for our loan portfolio and are adjusted quarterly as necessary to reflect the most recent loss experience. Impaired loans are already considered to be held at fair value, except those whose fair value is determined by discounting cash flows, as discussed previously. See Impaired Loans in Note 6 for details on the impairment measurement method for impaired loans. Loans, other than those held for sale, are not normally purchased and sold by the Company, and there are no active trading markets for most of this portfolio.
Time and foreign deposits, and any other short-term borrowings, are measured at fair value by discounting future cash flows using the LIBOR yield curve to the given maturity dates.
Long-term debt is measured at fair value based on actual market trades (i.e., an asset value) when available, or discounting cash flows to maturity using the LIBOR yield curve adjusted for credit spreads.
These fair value disclosures represent our best estimates based on relevant market information and information about the financial instruments. Fair value estimates are based on judgments regarding current economic conditions, future expected loss experience, risk characteristics of the various instruments, and other factors. These estimates are subjective in nature, involve uncertainties and matters of significant judgment, and cannot be determined with precision. Changes in these methodologies and assumptions could significantly affect the estimates.

Commitments_Guarantees_And_Con

Commitments, Guarantees, And Contingent Liabilities	3 Months Ended
	Mar. 31, 2014
Guarantees, Commitments And Contingencies [Abstract]	'
Guarantees, Commitments And Contingencies	'
	COMMITMENTS, GUARANTEES AND CONTINGENT LIABILITIES
	Commitments and Guarantees
	Contractual amounts of off-balance sheet financial instruments used to meet the financing needs of our customers are as follows:
	(In thousands)	March 31,		December 31,
		2014		2013
	Unfunded commitments to extend credit	$	16,443,367	$	16,174,326
	Standby letters of credit:
	Financial	812,011		779,811
	Performance	180,453		159,485
	Commercial letters of credit	72,806		80,218
	Total unfunded lending commitments	$	17,508,637	$	17,193,840
	The Company’s 2013 Annual Report on Form 10-K contains further information about these commitments and guarantees including their terms and collateral requirements. At March 31, 2014, the Company had recorded approximately $10.6 million as a liability for the guarantees associated with the standby letters of credit, which consisted of $7.9 million attributable to the RULC and $2.7 million of deferred commitment fees.
	At March 31, 2014, the Parent has guaranteed $15 million of debt of affiliated trusts issuing trust preferred securities.
	At March 31, 2014, we had unfunded commitments for private equity and other noninterest-bearing investments of $27.8 million. These obligations have no stated maturity. However, at March 31, 2014, substantially all of the private equity investments related to these commitments are prohibited by the Volcker Rule. See further discussions in Notes 5 and 10.
	Legal Matters
	We are subject to litigation in court and arbitral proceedings, as well as proceedings, investigations, examinations and other actions brought or considered by governmental and self-regulatory agencies. At any given time, litigation may relate to lending, deposit and other customer relationships, vendor and contractual issues, employee matters, intellectual property matters, personal injuries and torts, regulatory and legal compliance, and other matters. While most matters relate to individual claims, we are also subject to putative class action claims and similar broader claims. Current putative class actions and similar claims include the following:
	•	a complaint relating to our banking relationships with customers that allegedly engaged in wrongful telemarketing practices in which the plaintiff seeks a trebled monetary award under the federal RICO Act, Reyes v. Zions First National Bank, et. al., brought in the United States District Court for the Eastern District of Pennsylvania; and
	•	a complaint arising from our banking relationships with Frederick Berg and a number of investment funds controlled by him using the “Meridian” brand name, in which the liquidating trustee for the funds seeks an award from us, on the basis of aiding and abetting and other claims, for monetary damages suffered by victims of a fraud allegedly perpetrated by Berg, In re Consolidated Meridian Funds a/k/a Meridian Investors Trust, Mark Calvert as Liquidating Trustee, et. al. vs. Zions Bancorporation and The Commerce Bank of Washington, N.A., pending in the United States Bankruptcy Court for the Western District of Washington.
	In the third quarter of 2013, the District Court denied the plaintiff’s motion for class certification in the Reyes case. In the first quarter of 2014, the Third Circuit Court of Appeals approved the plaintiff’s motion to appeal the District Court decision.
	Discovery has been completed in the Reyes case and is in process in the Meridian Funds case.
	In the third quarter of 2013, we entered into definitive settlement agreements with respect to complaints relating to allegedly wrongful acts in our processing of overdraft fees on debit card transactions, Barlow, et. al. v. Zions First National Bank and Zions Bancorporation. The settlement agreements, which cover all of our affiliates alleged to have engaged in wrongful processing, were approved by the court and paid into escrow in the first quarter of 2014.
	At any given time, proceedings, investigations, examinations and other actions brought or considered by governmental and self-regulatory agencies may relate to our banking, investment advisory, trust, securities, and other products and services; our customers’ involvement in money-laundering, fraud, securities violations and other illicit activities or our policies and practices relating to such customer activities; and our compliance with the broad range of banking, securities and other laws and regulations applicable to us. At any given time, we may be in the process of responding to subpoenas, requests for documents, data and testimony relating to such matters and engaging in discussions to resolve the matters. Significant investigations and similar inquiries to which we are currently subject relate to:
	•	possible money laundering activities of a customer of one of our subsidiary banks and the anti-money laundering practices of that bank (conducted by the United States Attorneys Office for the Southern District of New York); and
	•	the practices of our subsidiary, Zions Bank; our former subsidiary, NetDeposit, LLC; and possibly other of our affiliates relating primarily to payment processing for allegedly fraudulent telemarketers and other customer types (conducted by the Department of Justice).
	These two matters appear to be ongoing.
	At least quarterly, we review outstanding and new legal matters, utilizing then available information. In accordance with applicable accounting guidance, if we determine that a loss from a matter is probable and the amount of the loss can be reasonably estimated, we establish an accrual for the loss. In the absence of such a determination, no accrual is made. Once established, accruals are adjusted to reflect developments relating to the matters.
	In our review, we also assess whether we can determine the range of reasonably possible losses for significant matters in which we are unable to determine that the likelihood of a loss is remote. Because of the difficulty of predicting the outcome of legal matters, discussed subsequently, we are able to meaningfully estimate such a range only for a limited number of matters. We currently estimate the aggregate range of reasonably possible losses for those matters to be from $0 million to roughly $50 million in excess of amounts accrued. This estimated range of reasonably possible losses is based on information currently available as of March 31, 2014. The matters underlying the estimated range will change from time to time, and actual results may vary significantly from this estimate. Those matters for which an estimate is not possible are not included within this estimated range and, therefore, this estimated range does not represent our maximum loss exposure.
	Based on our current knowledge, we believe that our current estimated liability for litigation and other legal actions and claims, reflected in our accruals and determined in accordance with applicable accounting guidance, is adequate and that liabilities in excess of the amounts currently accrued, if any, arising from litigation and other legal actions and claims for which an estimate as previously described is possible, will not have a material impact on our financial condition, results of operations, or cash flows. However, in light of the significant uncertainties involved in these matters, and the very large or indeterminate damages sought in some of these matters, an adverse outcome in one or more of these matters could be material to our financial condition, results of operations, or cash flows for any given reporting period.
	Any estimate or determination relating to the future resolution of litigation, arbitration, governmental or self-regulatory examinations, investigations or actions or similar matters is inherently uncertain and involves significant judgment. This is particularly true in the early stages of a legal matter, when legal issues and facts have not been well articulated, reviewed, analyzed, and vetted through discovery, preparation for trial or hearings, substantive and productive mediation or settlement discussions, or other actions. It is also particularly true with respect to class action and similar claims involving multiple defendants, matters with complex procedural requirements or substantive issues or novel legal theories, and examinations, investigations and other actions conducted or brought by governmental and self-regulatory agencies, in which the normal adjudicative process is not applicable. Accordingly, we usually are unable to determine whether a favorable or unfavorable outcome is remote, reasonably likely, or probable, or to estimate the amount or range of a probable or reasonably likely loss, until relatively late in the course of a legal matter, sometimes not until a number of years have elapsed. Accordingly, our judgments and estimates relating to claims will change from time to time in light of developments and actual outcomes will differ from our estimates. These differences may be material.

Retirement_Plans

Retirement Plans	3 Months Ended
	Mar. 31, 2014
Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]	'
Retirement Plans	'
	RETIREMENT PLANS
	The following discloses the net periodic benefit cost (credit) and its components for the Company’s pension and postretirement plans:
		Pension benefits						Supplemental				Postretirement
								retirement				benefits
								benefits
	(In thousands)	Three Months Ended March 31,
		2014			2013			2014		2013		2014			2013
	Service cost	$	—		$	—		$	—	$	—	$	8		$	8
	Interest cost	1,880			1,739			113		101		12			10
	Expected return on plan assets	(3,326		)	(3,027		)
	Amortization of prior service							13		31		—			(37		)
	cost (credit)
	Amortization of net actuarial	797			2,157			5		17		(18		)	(19		)
	(gain) loss
	Net periodic benefit cost (credit)	$	(649	)	$	869		$	131	$	149	$	2		$	(38	)
	As disclosed in the Company’s 2013 Annual Report on Form 10-K, the Company has frozen its participation and benefit accruals for the pension plan and its contributions for individual benefit payments in the postretirement benefit plan.

Operating_Segment_Information

Operating Segment Information	3 Months Ended
	Mar. 31, 2014
Operating Segment Information [Abstract]	'
Operating Segment Information	'
	.	OPERATING SEGMENT INFORMATION
	We manage our operations and prepare management reports and other information with a primary focus on geographical area. As of March 31, 2014, we operate eight community/regional banks in distinct geographical areas. Performance assessment and resource allocation are based upon this geographical structure. Zions Bank operates 98 branches in Utah and 26 branches in Idaho. CB&T operates 95 branches in California. Amegy operates 84 branches in Texas. NBAZ operates 71 branches in Arizona. NSB operates 48 branches in Nevada. Vectra operates 37 branches in Colorado and one branch in New Mexico. TCBW operates one branch in the state of Washington. TCBO operates one branch in Oregon.
	The operating segment identified as “Other” includes the Parent, Zions Management Services Company (“ZMSC”), certain nonbank financial service subsidiaries, TCBO, and eliminations of transactions between segments. The Parent’s operations are significant to the Other segment. Net interest income is substantially affected by the Parent’s interest on long-term debt. Net impairment losses on investment securities relate to the Parent. ZMSC provides internal technology and operational services to affiliated operating businesses of the Company. ZMSC charges most of its costs to the affiliates on an approximate break-even basis.
	The accounting policies of the individual operating segments are the same as those of the Company. Transactions between operating segments are primarily conducted at fair value, resulting in profits that are eliminated for reporting consolidated results of operations. Operating segments pay for centrally provided services based upon estimated or actual usage of those services.
	The following table presents selected operating segment information for the three months ended March 31, 2014 and 2013:
	(In millions)	Zions Bank						CB&T						Amegy						NBAZ						NSB
		2014			2013			2014			2013			2014			2013			2014			2013			2014			2013
	CONDENSED INCOME STATEMENT
	Net interest income	$	142.5		$	151.5		$	109.2		$	114.6		$	94.7		$	95.4		$	40.3		$	40.5		$	27.9		$	27.4
	Provision for loan losses	(8.7		)	1.8			(2.1		)	(6.8		)	16.9			(13.8		)	(3.0		)	—			(2.6		)	(0.2		)
	Net interest income after provision for loan losses	151.2			149.7			111.3			121.4			77.8			109.2			43.3			40.5			30.5			27.6
	Net impairment losses on investment securities	—			—			—			—			—			—			—			—			—			—
	Other noninterest income	44			50.3			5.8			21.6			32			38.4			8.3			8.2			4.9			8.9
	Noninterest expense	121.5			115			85.3			90.3			87			84.2			37.3			34.2			32.1			31.7
	Income (loss) before income taxes	73.7			85			31.8			52.7			22.8			63.4			14.3			14.5			3.3			4.8
	Income tax expense (benefit)	26.8			31			12.1			20.8			7.3			21.3			5.2			5.4			1			1.6
	Net income (loss)	$	46.9		$	54		$	19.7		$	31.9		$	15.5		$	42.1		$	9.1		$	9.1		$	2.3		$	3.2
	AVERAGE BALANCE SHEET DATA
	Total assets	$	18,275		$	17,055		$	10,889		$	10,922		$	13,467		$	12,690		$	4,612		$	4,592		$	3,991		$	4,052
	Cash and due from banks	340			350			166			175			322			321			73			69			89			86
	Money market investments	3,545			2,507			1,129			1,327			2,503			2,183			288			479			699			994
	Total securities	1,596			1,239			327			344			242			412			365			274			781			742
	Total loans	12,247			12,357			8,538			8,275			9,362			8,595			3,696			3,552			2,306			2,098
	Total deposits	15,980			14,743			9,272			9,309			11,099			10,291			3,952			3,894			3,598			3,593
	Shareholder’s equity:
	Preferred equity	280			280			162			162			153			251			120			180			50			139
	Common equity	1,538			1,509			1,350			1,327			1,849			1,744			422			401			318			298
	Noncontrolling interests	—			—			—			—			—			—			—			—			—			—
	Total shareholder’s equity	1,818			1,789			1,512			1,489			2,002			1,995			542			581			368			437
		Vectra						TCBW						Other						Consolidated
																				Company
		2014			2013			2014			2013			2014			2013			2014			2013
	CONDENSED INCOME STATEMENT
	Net interest income	$	25.3		$	25.6		$	7		$	6.5		$	(30.4	)	$	(43.4	)	$	416.5		$	418.1
	Provision for loan losses	(1.8		)	(8.6		)	0.7			(0.9		)	—			(0.5		)	(0.6		)	(29.0		)
	Net interest income after provision for loan losses	27.1			34.2			6.3			7.4			(30.4		)	(42.9		)	417.1			447.1
	Net impairment losses on investment securities	—			—			—			—			—			(10.1		)	—			(10.1		)
	Other noninterest income	3.8			7			(1.0		)	1			40.5			(4.1		)	138.3			131.3
	Noninterest expense	25.3			25.1			4.5			4.9			5.1			11.9			398.1			397.3
	Income (loss) before income taxes	5.6			16.1			0.8			3.5			5			(69.0		)	157.3			171
	Income tax expense (benefit)	1.8			5.8			0.3			1.2			1.6			(26.5		)	56.1			60.6
	Net income (loss)	$	3.8		$	10.3		$	0.5		$	2.3		$	3.4		$	(42.5	)	$	101.2		$	110.4
	AVERAGE BALANCE SHEET DATA
	Total assets	$	2,569		$	2,463		$	873		$	880		$	758		$	1,207		$	55,434		$	53,861
	Cash and due from banks	47			52			21			19			(17		)	(9		)	1,041			1,063
	Money market investments	14			46			118			181			(159		)	395			8,137			8,112
	Total securities	164			184			90			101			552			519			4,117			3,815
	Total loans	2,280			2,092			631			565			65			64			39,125			37,598
	Total deposits	2,168			2,107			742			735			(1,033		)	(262		)	45,778			44,410
	Shareholder’s equity:
	Preferred equity	70			70			3			3			166			145			1,004			1,230
	Common equity	247			227			88			82			(217		)	(598		)	5,595			4,990
	Noncontrolling interests	—			—			—			—			—			(4		)	—			(4		)
	Total shareholder’s equity	317			297			91			85			(51		)	(457		)	6,599			6,216

Supplemental_Cash_Flow_Informa1

Supplemental Cash Flow Information (Tables)	3 Months Ended
	Mar. 31, 2014
Supplemental Cash Flow Information [Abstract]	'
Schedule of Other Significant Noncash Transactions [Table Text Block]	'
	(In thousands)	Three Months Ended
		March 31,
		2014		2013
	Loans transferred to other real estate owned	$	6,338	$	23,442
	Loans held for sale transferred to loans and leases	3,789		96
	Beneficial conversion feature transferred from common stock to preferred stock as a result of subordinated debt conversions	—		169
	Subordinated debt converted to preferred stock	—		991

Cash_and_Money_Market_Investme1

Cash and Money Market Investments Cash and Money Market Investments (Tables)	3 Months Ended
	Mar. 31, 2014
Gross and net information for selected financial instruments [Abstract]	'
Fair Value, by Balance Sheet Grouping [Table Text Block]	'
			March 31, 2014
	(In thousands)											Gross amounts not offset in the balance sheet
	Description		Gross amounts recognized			Gross amounts offset in the balance sheet			Net amounts presented in the balance sheet			Financial instruments			Cash collateral received/pledged			Net amount
	Assets:
	Federal funds sold and security resell agreements		$	379,947		$	—		$	379,947		$	—		$	—		$	379,947
	Derivatives (included in other assets)		57,683			—			57,683			(8,646		)	760			49,797
			$	437,630		$	—		$	437,630		$	(8,646	)	$	760		$	429,744
	Liabilities:
	Federal funds and other short-term borrowings		$	279,837		$	—		$	279,837		$	—		$	—		$	279,837
	Derivatives (included in other liabilities)		62,589			—			62,589			(8,646		)	(29,260		)	24,683
			$	342,426		$	—		$	342,426		$	(8,646	)	$	(29,260	)	$	304,520
			December 31, 2013
	(In thousands)											Gross amounts not offset in the balance sheet
	Description		Gross amounts recognized			Gross amounts offset in the balance sheet			Net amounts presented in the balance sheet			Financial instruments			Cash collateral received/pledged			Net amount
	Assets:
	Federal funds sold and security resell agreements		$	282,248		$	—		$	282,248		$	—		$	—		$	282,248
	Derivatives (included in other assets)		65,683			—			65,683			(11,650		)	2,210			56,243
			$	347,931		$	—		$	347,931		$	(11,650	)	$	2,210		$	338,491
	Liabilities:
	Federal funds and other short-term borrowings		$	340,348		$	—		$	340,348		$	—		$	—		$	340,348
	Derivatives (included in other liabilities)		68,397			—			68,397			(11,650		)	(26,997		)	29,750
			$	408,745		$	—		$	408,745		$	(11,650	)	$	(26,997	)	$	370,098
		March 31, 2014								December 31, 2013
	(In thousands)	Carrying			Estimated			Level		Carrying			Estimated			Level
		value			fair value					value			fair value
	Financial assets:
	HTM investment securities	$	606,279		$	635,379		3		$	588,981		$	609,547		3
	Loans and leases (including loans held for sale), net of allowance	38,587,527			38,333,815			3		38,468,402			38,088,242			3
	Financial liabilities:
	Time deposits	2,528,735			2,536,904			2		2,593,038			2,602,955			2
	Foreign deposits	1,648,111			1,647,876			2		1,980,161			1,979,805			2
	Long-term debt (less fair value hedges)	2,155,606			2,301,239			2		2,269,762			2,423,643			2

Investment_Securities_Tables

Investment Securities (Tables)	3 Months Ended																							12 Months Ended
	Mar. 31, 2014																							Dec. 31, 2012
Investments [Abstract]	'																							'
Summary Of Investment Securities	'																							'
		March 31, 2014
					Recognized in OCI 1											Not recognized in OCI
	(In thousands)	Amortized			Gross				Gross			Carrying				Gross			Gross			Estimated
		cost			unrealized				unrealized			value				unrealized			unrealized			fair
					gains				losses							gains			losses			value
	Held-to-maturity
	Municipal securities	$	567,935		$	—			$	—		$	567,935			$	14,429		$	1,707		$	580,657
	Asset-backed securities:
	Trust preferred securities – banks and insurance	79,351			—				41,107			38,244				17,603			1,225			54,622
	Other debt securities	100			—				—			100				—			—			100
		647,386			—				41,107			606,279				32,032			2,932			635,379
	Available-for-sale
	U.S. Treasury securities	1,471			75				—			1,546										1,546
	U.S. Government agencies and corporations:
	Agency securities	561,153			2,595				5,997			557,751										557,751
	Agency guaranteed mortgage-backed securities	301,020			10,662				844			310,838										310,838
	Small Business Administration loan-backed securities	1,366,783			19,964				4,868			1,381,879										1,381,879
	Municipal securities	150,897			1,213				704			151,406										151,406
	Asset-backed securities:
	Trust preferred securities – banks and insurance	934,353			13,578				188,520			759,411										759,411
	Auction rate securities	6,508			87				35			6,560										6,560
	Other	1,462			290				—			1,752										1,752
		3,323,647			48,464				200,968			3,171,143										3,171,143
	Mutual funds and other	257,643			180				5,761			252,062										252,062
		3,581,290			48,644				206,729			3,423,205										3,423,205
	Total	$	4,228,676		$	48,644			$	247,836		$	4,029,484									$	4,058,584
	1	Other comprehensive income
		December 31, 2013
					Recognized in OCI											Not recognized in OCI
	(In thousands)	Amortized			Gross				Gross			Carrying				Gross			Gross			Estimated
		cost			unrealized				unrealized			value				unrealized			unrealized			fair
					gains				losses							gains			losses			value
	Held-to-maturity
	Municipal securities	$	551,055		$	—			$	—		$	551,055			$	11,295		$	4,616		$	557,734
	Asset-backed securities:
	Trust preferred securities – banks and insurance	79,419			—				41,593			37,826				15,195			1,308			51,713
	Other debt securities	100			—				—			100				—			—			100
		630,574			—				41,593			588,981				26,490			5,924			609,547
	Available-for-sale
	U.S. Treasury securities	1,442			104				—			1,546										1,546
	U.S. Government agencies and
	corporations:
	Agency securities	517,905			1,920				901			518,924										518,924
	Agency guaranteed mortgage-backed securities	308,687			9,926				1,237			317,376										317,376
	Small Business Administration loan-backed securities	1,202,901			21,129				2,771			1,221,259										1,221,259
	Municipal securities	65,425			1,329				490			66,264										66,264
	Asset-backed securities:
	Trust preferred securities – banks and insurance	1,508,224			13,439				282,843			1,238,820										1,238,820
	Trust preferred securities – real estate investment trusts	22,996			—				—			22,996										22,996
	Auction rate securities	6,507			118				26			6,599										6,599
	Other	27,540			359				—			27,899										27,899
		3,661,627			48,324				288,268			3,421,683										3,421,683
	Mutual funds and other	287,603			21				7,421			280,203										280,203
		3,949,230			48,345				295,689			3,701,886										3,701,886
	Total	$	4,579,804		$	48,345			$	337,282		$	4,290,867									$	4,311,433
Contractual Maturities Debt Securities	'																							'
		Held-to-maturity							Available-for-sale
	(In thousands)	Amortized			Estimated				Amortized			Estimated
		cost			fair				cost			fair
					value							value
	Due in one year or less	$	77,395		$	56,283			$	510,870		$	497,041
	Due after one year through five years	195,088			161,077				1,212,400			1,205,205
	Due after five years through ten years	135,308			138,806				709,151			697,454
	Due after ten years	239,595			279,213				891,226			771,443
		$	647,386		$	635,379			$	3,323,647		$	3,171,143
Summary Of Amount Of Gross Unrealized Losses For Debt Securities And Estimated Fair Value	'																							'
	The following is a summary of the amount of gross unrealized losses for investment securities and the estimated fair value by length of time the securities have been in an unrealized loss position:
		March 31, 2014																								December 31, 2013
		Less than 12 months							12 months or more							Total										Less than 12 months				12 months or more				Total
	(In thousands)	Gross			Estimated				Gross			Estimated				Gross			Estimated						(In thousands)	Gross unrealized losses		Estimated fair value		Gross unrealized losses		Estimated fair value		Gross unrealized losses		Estimated fair value
		unrealized			fair				unrealized			fair				unrealized			fair
		losses			value				losses			value				losses			value
	Held-to-maturity																								Held-to-maturity
	Municipal securities	$	1,414		$	43,060			$	293		$	5,721			$	1,707		$	48,781					Municipal securities	$	4,025	$	70,400	$	591	$	9,103	$	4,616	$	79,503
	Asset-backed securities:																								Asset-backed securities:
																									Trust preferred securities – banks and insurance	—		—		42,901		51,319		42,901		51,319
	Trust preferred securities – banks and insurance	56			71				42,276			54,551				42,332			54,622
																										4,025		70,400		43,492		60,422		47,517		130,822
		1,470			43,131				42,569			60,272				44,039			103,403
																									Available-for-sale
	Available-for-sale																								U.S. Government agencies and corporations:
	U.S. Government agencies and corporations:																								Agency securities	828		47,862		73		5,874		901		53,736
	Agency securities	5,936			326,547				61			5,803				5,997			332,350
																									Agency guaranteed mortgage-backed securities	1,231		64,533		6		935		1,237		65,468
	Agency guaranteed mortgage-backed securities	792			48,560				52			3,054				844			51,614
																									Small Business Administration loan-backed securities	1,709		187,680		1,062		39,256		2,771		226,936
	Small Business Administration loan-backed securities	3,537			347,883				1,331			37,832				4,868			385,715
																									Municipal securities	73		8,834		417		3,179		490		12,013
	Municipal securities	57			7,127				647			2,824				704			9,951
																									Asset-backed securities:
	Asset-backed securities:																								Trust preferred securities – banks and insurance	2,539		51,911		280,304		847,990		282,843		899,901
	Trust preferred securities – banks and insurance	1,280			52,845				187,240			624,501				188,520			677,346						Auction rate securities	5		1,609		21		892		26		2,501
	Auction rate securities	11			1,603				24			889				35			2,492							6,385		362,429		281,883		898,126		288,268		1,260,555
		11,613			784,565				189,355			674,903				200,968			1,459,468						Mutual funds and other	943		24,057		6,478		103,614		7,421		127,671
	Mutual funds and other	—			—				5,761			124,331				5,761			124,331							7,328		386,486		288,361		1,001,740		295,689		1,388,226
		11,613			784,565				195,116			799,234				206,729			1,583,799						Total	$	11,353	$	456,886	$	331,853	$	1,062,162	$	343,206	$	1,519,048
	Total	$	13,083		$	827,696			$	237,685		$	859,506			$	250,768		$	1,687,202
Rollforward Of Total Amount Of Credit-Related OTTI	'																							'
	(In thousands)	Three Months Ended										Three Months Ended
		31-Mar-14										31-Mar-13
		HTM			AFS				Total			HTM				AFS			Total
	Balance of credit-related OTTI at beginning	$	(9,052	)	$	(176,833	)		$	(185,885	)	$	(13,549	)		$	(394,494	)	$	(408,043	)
	of period
	Additions recognized in earnings during the period:
	Credit-related OTTI on securities not previously impaired	—			—				—			(403		)		—			(403		)
	Additional credit-related OTTI on securities previously impaired	(27		)	—				(27		)	—				(9,714		)	(9,714		)
	Subtotal of amounts recognized in earnings	(27		)	—				(27		)	(403		)		(9,714		)	(10,117		)
	Reductions for securities sold or paid off during the period	—			12,919				12,919			—				—			—
	Balance of credit-related OTTI at end of period	$	(9,079	)	$	(163,914	)		$	(172,993	)	$	(13,952	)		$	(404,208	)	$	(418,160	)
Noncredit Related OTTI	'																							'
	(In thousands)	Three Months Ended
		March 31,
		2014			2013
	HTM	$	—		$	16,114
	AFS	—			5,262
		$	—		$	21,376
Gains And Losses, Including OTTI, Recognized In Statement Of Income	'																							'
			Three Months Ended
			March 31, 2014							March 31, 2013
		(In thousands)	Gross gains			Gross losses				Gross gains			Gross losses
		Investment securities:
		Held-to-maturity	$	—		$	27			$	24		$	403
		Available-for-sale	72,561			41,647				3,276			9,715
		Other noninterest-bearing investments:
		Nonmarketable equity securities	912			—				2,857			25
			73,473			41,674				6,157			10,143
		Net gains (losses)				$	31,799						$	(3,986	)
		Statement of income information:
		Net impairment losses on investment securities				$	(27	)					$	(10,117	)
		Equity securities gains, net				912							2,832
		Fixed income securities gains, net				30,914							3,299
		Net gains (losses)				$	31,799						$	(3,986	)
Tax and Nontaxable Interest Income by Investment Type [Table Text Block]	'																							'
			Three Months Ended
			March 31, 2014										March 31, 2013
		(In thousands)	Taxable			Nontaxable				Total			Taxable				Nontaxable			Total
		Investment securities:
		Held-to-maturity	$	3,828		$	2,836			$	6,664		$	5,073			$	2,901		$	7,974
		Available-for-sale	20,424			524				20,948			17,173				539			17,712
		Trading	482			—				482			190				—			190
			$	24,734		$	3,360			$	28,094		$	22,436			$	3,440		$	25,876

Loans_And_Allowance_For_Credit1

Loans And Allowance For Credit Losses (Tables)	3 Months Ended																						12 Months Ended
	Mar. 31, 2014																						Dec. 31, 2012
Loans And Allowance For Credit Losses [Abstract]	'																						'
Summary Of Major Portfolio Segment And Specific Loan Class	'																						'
	(In thousands)	March 31,			December 31,
		2014			2013
	Loans held for sale	$	126,344		$	171,328
	Commercial:
	Commercial and industrial	$	12,511,630		$	12,481,083
	Leasing	389,576			387,929
	Owner occupied	7,347,813			7,437,195
	Municipal	482,074			449,418
	Total commercial	20,731,093			20,755,625
	Commercial real estate:
	Construction and land development	2,263,920			2,182,821
	Term	8,080,348			8,005,837
	Total commercial real estate	10,344,268			10,188,658
	Consumer:
	Home equity credit line	2,165,285			2,133,120
	1-4 family residential	4,795,484			4,736,665
	Construction and other consumer real estate	330,215			324,922
	Bankcard and other revolving plans	360,389			356,240
	Other	186,089			197,864
	Total consumer	7,837,462			7,748,811
	FDIC-supported loans	285,313			350,271
	Total loans	$	39,198,136		$	39,043,365
Summary Of Changes in The Allowance For Credit Losses	'																						'
	Changes in the allowance for credit losses are summarized as follows:
		Three Months Ended March 31, 2014
	(In thousands)	Commercial			Commercial				Consumer			FDIC-				Total
					real estate							supported 1
	Allowance for loan losses:
	Balance at beginning of period	$	465,145		$	213,363			$	60,865		$	6,918			$	746,291
	Additions:
	Provision for loan losses	11,682			(1,567		)		(8,868		)	(1,857		)		(610		)
	Adjustment for FDIC-supported loans	—			—				—			(817		)		(817		)
	Deductions:
	Gross loan and lease charge-offs	(9,124		)	(7,854		)		(3,114		)	(703		)		(20,795		)
	Recoveries	6,845			2,604				2,197			1,238				12,884
	Net loan and lease charge-offs	(2,279		)	(5,250		)		(917		)	535				(7,911		)
	Balance at end of period	$	474,548		$	206,546			$	51,080		$	4,779			$	736,953
	Reserve for unfunded lending commitments:
	Balance at beginning of period	$	48,345		$	37,485			$	3,875		$	—			$	89,705
	Provision charged (credited) to earnings	1,525			(2,212		)		(325		)	—				(1,012		)
	Balance at end of period	$	49,870		$	35,273			$	3,550		$	—			$	88,693
	Total allowance for credit losses at end of period:
	Allowance for loan losses	$	474,548		$	206,546			$	51,080		$	4,779			$	736,953
	Reserve for unfunded lending commitments	49,870			35,273				3,550			—				88,693
	Total allowance for credit losses	$	524,418		$	241,819			$	54,630		$	4,779			$	825,646
		Three Months Ended March 31, 2013
	(In thousands)	Commercial			Commercial				Consumer			FDIC-				Total
					real estate							supported 1
	Allowance for loan losses:
	Balance at beginning of period	$	510,908		$	276,976			$	95,656		$	12,547			$	896,087
	Additions:
	Provision for loan losses	(3,229		)	(18,628		)		(5,020		)	(2,158		)		(29,035		)
	Adjustment for FDIC-supported loans	—			—				—			(7,429		)		(7,429		)
	Deductions:
	Gross loan and lease charge-offs	(18,100		)	(7,224		)		(9,937		)	(206		)		(35,467		)
	Recoveries	7,351			5,297				3,923			1,054				17,625
	Net loan and lease charge-offs	(10,749		)	(1,927		)		(6,014		)	848				(17,842		)
	Balance at end of period	$	496,930		$	256,421			$	84,622		$	3,808			$	841,781
	Reserve for unfunded lending commitments:
	Balance at beginning of period	$	67,374		$	37,852			$	1,583		$	—			$	106,809
	Provision charged (credited) to earnings	(1,742		)	(4,612		)		—			—				(6,354		)
	Balance at end of period	$	65,632		$	33,240			$	1,583		$	—			$	100,455
	Total allowance for credit losses at end of period:
	Allowance for loan losses	$	496,930		$	256,421			$	84,622		$	3,808			$	841,781
	Reserve for unfunded lending commitments	65,632			33,240				1,583			—				100,455
	Total allowance for credit losses	$	562,562		$	289,661			$	86,205		$	3,808			$	942,236
	1 The Purchased Loans section following contains further discussion related to FDIC-supported loans.
Summary Of Nonaccrual Loans	'																						'
	Nonaccrual loans are summarized as follows:
	(In thousands)	March 31,			December 31,
		2014			2013
	Commercial:
	Commercial and industrial	$	108,618		$	97,960
	Leasing	684			757
	Owner occupied	127,140			136,281
	Municipal	9,947			9,986
	Total commercial	246,389			244,984
	Commercial real estate:
	Construction and land development	29,061			29,205
	Term	59,202			60,380
	Total commercial real estate	88,263			89,585
	Consumer:
	Home equity credit line	9,624			8,969
	1-4 family residential	48,023			53,002
	Construction and other consumer real estate	3,424			3,510
	Bankcard and other revolving plans	882			1,365
	Other	944			804
	Total consumer loans	62,897			67,650
	FDIC-supported loans	4,117			4,394
	Total	$	401,666		$	406,613
Summary Of Past Due Loans (Accruing And Nonaccruing)	'																						'
	Past due loans (accruing and nonaccruing) are summarized as follows:
		March 31, 2014
	(In thousands)	Current			30-89 days				90+ days			Total				Total			Accruing		Nonaccrual
					past  due				past  due			past  due				loans			loans		loans
																			90+ days		that are
																			past due		current1
	Commercial:
	Commercial and industrial	$	12,403,866		$	53,684			$	54,080		$	107,764			$	12,511,630		$	826	$	45,137
	Leasing	389,201			181				194			375				389,576			—		490
	Owner occupied	7,262,832			44,218				40,763			84,981				7,347,813			130		71,445
	Municipal	473,263			—				8,811			8,811				482,074			—		1,136
	Total commercial	20,529,162			98,083				103,848			201,931				20,731,093			956		118,208
	Commercial real estate:
	Construction and land development	2,246,891			5,518				11,511			17,029				2,263,920			—		16,934
	Term	8,023,737			31,597				25,014			56,611				8,080,348			3,992		21,690
	Total commercial real estate	10,270,628			37,115				36,525			73,640				10,344,268			3,992		38,624
	Consumer:
	Home equity credit line	2,151,938			6,305				7,042			13,347				2,165,285			—		2,145
	1-4 family residential	4,765,571			11,351				18,562			29,913				4,795,484			702		25,889
	Construction and other consumer real estate	326,297			3,035				883			3,918				330,215			—		2,100
	Bankcard and other revolving plans	357,596			1,722				1,071			2,793				360,389			1,008		739
	Other	184,687			625				777			1,402				186,089			3		127
	Total consumer loans	7,786,089			23,038				28,335			51,373				7,837,462			1,713		31,000
	FDIC-supported loans	247,399			4,390				33,524			37,914				285,313			31,530		1,572
	Total	$	38,833,278		$	162,626			$	202,232		$	364,858			$	39,198,136		$	38,191	$	189,404
		December 31, 2013
	(In thousands)	Current			30-89 days				90+ days			Total				Total			Accruing		Nonaccrual
					past  due				past  due			past due				loans			loans		loans
																			90+ days		that are
																			past due		current1
	Commercial:
	Commercial and industrial	$	12,387,546		$	48,811			$	44,726		$	93,537			$	12,481,083		$	1,855	$	52,412
	Leasing	387,526			173				230			403				387,929			36		563
	Owner occupied	7,357,618			36,718				42,859			79,577				7,437,195			744		82,072
	Municipal	440,608			3,307				5,503			8,810				449,418			—		1,176
	Total commercial	20,573,298			89,009				93,318			182,327				20,755,625			2,635		136,223
	Commercial real estate:
	Construction and land development	2,162,018			8,967				11,836			20,803				2,182,821			23		17,311
	Term	7,971,327			15,362				19,148			34,510				8,005,837			5,580		42,624
	Total commercial real estate	10,133,345			24,329				30,984			55,313				10,188,658			5,603		59,935
	Consumer:
	Home equity credit line	2,122,549			8,001				2,570			10,571				2,133,120			98		2,868
	1-4 family residential	4,704,852			8,526				23,287			31,813				4,736,665			667		27,592
	Construction and other consumer real estate	322,807			1,038				1,077			2,115				324,922			—		2,232
	Bankcard and other revolving plans	353,060			2,093				1,087			3,180				356,240			900		1,105
	Other	196,327			827				710			1,537				197,864			54		125
	Total consumer loans	7,699,595			20,485				28,731			49,216				7,748,811			1,719		33,922
	FDIC-supported loans	305,709			12,026				32,536			44,562				350,271			30,391		1,975
	Total	$	38,711,947		$	145,849			$	185,569		$	331,418			$	39,043,365		$	40,348	$	232,055
	1 Represents nonaccrual loans that are not past due more than 30 days; however, full payment of principal and interest is still not expected.
Summary Of Outstanding Loan Balances (Accruing And Nonaccruing) Categorized By Credit Quality Indicators	'																						'
		March 31, 2014
	(In thousands)	Pass			Special				Sub-			Doubtful				Total			Total
					Mention				standard							loans			allowance
	Commercial:
	Commercial and industrial	$	11,722,928		$	340,409			$	436,572		$	11,721			$	12,511,630
	Leasing	383,454			992				5,130			—				389,576
	Owner occupied	6,762,002			167,655				417,828			328				7,347,813
	Municipal	472,127			—				9,947			—				482,074
	Total commercial	19,340,511			509,056				869,477			12,049				20,731,093			$	474,548
	Commercial real estate:
	Construction and land development	2,192,237			14,181				57,502			—				2,263,920
	Term	7,675,747			149,016				253,739			1,846				8,080,348
	Total commercial real estate	9,867,984			163,197				311,241			1,846				10,344,268			206,546
	Consumer:
	Home equity credit line	2,140,762			—				24,523			—				2,165,285
	1-4 family residential	4,732,423			—				63,061			—				4,795,484
	Construction and other consumer real estate	321,328			—				8,887			—				330,215
	Bankcard and other revolving plans	358,045			—				2,344			—				360,389
	Other	184,863			—				1,226			—				186,089
	Total consumer loans	7,737,421			—				100,041			—				7,837,462			51,080
	FDIC-supported loans	181,100			19,366				84,847			—				285,313			4,779
	Total	$	37,127,016		$	691,619			$	1,365,606		$	13,895			$	39,198,136		$	736,953
		December 31, 2013
	(In thousands)	Pass			Special				Sub-			Doubtful				Total			Total
					Mention				standard							loans			allowance
	Commercial:
	Commercial and industrial	$	11,807,825		$	303,598			$	360,391		$	9,269			$	12,481,083
	Leasing	380,268			2,050				5,611			—				387,929
	Owner occupied	6,827,464			184,328				425,403			—				7,437,195
	Municipal	439,432			—				9,986			—				449,418
	Total commercial	19,454,989			489,976				801,391			9,269				20,755,625			$	465,145
	Commercial real estate:
	Construction and land development	2,107,828			15,010				59,983			—				2,182,821
	Term	7,569,472			172,856				263,509			—				8,005,837
	Total commercial real estate	9,677,300			187,866				323,492			—				10,188,658			213,363
	Consumer:
	Home equity credit line	2,111,475			—				21,645			—				2,133,120
	1-4 family residential	4,668,841			—				67,824			—				4,736,665
	Construction and other consumer real estate	313,881			—				11,041			—				324,922
	Bankcard and other revolving plans	353,618			—				2,622			—				356,240
	Other	196,770			—				1,094			—				197,864
	Total consumer loans	7,644,585			—				104,226			—				7,748,811			60,865
	FDIC-supported loans	232,893			22,532				94,846			—				350,271			6,918
	Total	$	37,009,767		$	700,374			$	1,323,955		$	9,269			$	39,043,365		$	746,291
Summary Of Information On Impaired Loans	'																						'
																							The ALLL and outstanding loan balances according to the Company’s impairment method are summarized as follows:
		March 31, 2014																						March 31, 2014
	(In thousands)	Unpaid			Recorded investment							Total				Related							(In thousands)	Commercial		Commercial		Consumer		FDIC-		Total
		principal										recorded				allowance										real estate				supported
		balance			with no				with			investment											Allowance for loan losses:
					allowance				allowance														Individually evaluated for impairment	$	41,739	$	7,409	$	10,137	$	—	$	59,285
	Commercial:
	Commercial and industrial	$	201,765		$	36,155			$	140,988		$	177,143			$	31,319						Collectively evaluated for impairment	432,809		199,137		40,943		528		673,417
	Owner occupied	146,504			59,435				71,281			130,716				8,487							Purchased loans with evidence of credit deterioration	—		—		—		4,251		4,251
	Total commercial	348,269			95,590				212,269			307,859				39,806							Total	$	474,548	$	206,546	$	51,080	$	4,779	$	736,953
	Commercial real estate:
	Construction and land development	70,088			28,680				30,460			59,140				2,865							Outstanding loan balances:
																							Individually evaluated for impairment	$	329,389	$	240,384	$	100,680	$	1,218	$	671,671
	Term	175,713			70,196				62,043			132,239				3,634
																							Collectively evaluated for impairment	20,401,704		10,103,884		7,736,782		35,128		38,277,498
	Total commercial real estate	245,801			98,876				92,503			191,379				6,499
																							Purchased loans with evidence of credit deterioration	—		—		—		248,967		248,967
	Consumer:
	Home equity credit line	18,145			13,095				2,177			15,272				67							Total	$	20,731,093	$	10,344,268	$	7,837,462	$	285,313	$	39,198,136
	1-4 family residential	94,639			39,589				39,841			79,430				9,790
	Construction and other consumer real estate	4,241			2,341				986			3,327				179
																								December 31, 2013
	Other	630			630				—			630				—							(In thousands)	Commercial		Commercial		Consumer		FDIC-		Total
																										real estate				supported
	Total consumer loans	117,655			55,655				43,004			98,659				10,036							Allowance for loan losses:
																							Individually evaluated for impairment	$	39,288	$	12,510	$	10,701	$	—	$	62,499
	FDIC-supported loans	321,798			91,487				158,698			250,185				4,251
																							Collectively evaluated for impairment	425,857		200,853		50,164		392		677,266
	Total	$	1,033,523		$	341,608			$	506,474		$	848,082			$	60,592
																							Purchased loans with evidence of credit deterioration	—		—		—		6,526		6,526
																							Total	$	465,145	$	213,363	$	60,865	$	6,918	$	746,291
		December 31, 2013
	(In thousands)	Unpaid			Recorded investment							Total				Related							Outstanding loan balances:
		principal										recorded				allowance							Individually evaluated for impairment	$	315,604	$	262,907	$	101,545	$	1,224	$	681,280
		balance			with no				with			investment
					allowance				allowance														Collectively evaluated for impairment	20,440,021		9,925,751		7,647,266		37,963		38,051,001
	Commercial:
	Commercial and industrial	$	178,281		$	30,092			$	126,692		$	156,784			$	23,687						Purchased loans with evidence of credit deterioration	—		—		—		311,084		311,084
	Owner occupied	151,499			50,361				88,584			138,945				13,900							Total	$	20,755,625	$	10,188,658	$	7,748,811	$	350,271	$	39,043,365
	Total commercial	329,780			80,453				215,276			295,729				37,587
	Commercial real estate:
	Construction and land development	85,440			19,206				50,744			69,950				3,483
	Term	171,826			34,258				112,330			146,588				7,981
	Total commercial real estate	257,266			53,464				163,074			216,538				11,464
	Consumer:
	Home equity credit line	17,547			12,568				2,200			14,768				178
	1-4 family residential	95,613			38,775				42,132			80,907				10,276
	Construction and other consumer real estate	4,713			2,643				933			3,576				175
	Bankcard and other revolving plans	726			726				—			726				—
	Other	—			—				—			—				—
	Total consumer loans	118,599			54,712				45,265			99,977				10,629
	FDIC-supported loans	404,308			83,917				228,392			312,309				6,526
	Total	$	1,109,953		$	272,546			$	652,007		$	924,553			$	66,206
		Three Months Ended							Three Months Ended
		31-Mar-14							31-Mar-13
	(In thousands)	Average			Interest				Average			Interest
		recorded			income				recorded			income
		investment			recognized				investment			recognized
	Commercial:
	Commercial and industrial	$	175,155		$	1,024			$	177,745		$	856
	Owner occupied	137,175			752				182,825			806
	Total commercial	312,330			1,776				360,570			1,662
	Commercial real estate:
Construction and land development	62,548			552				147,225			664
Term	149,425			1,294				289,103			1,836
Total commercial real estate	211,973			1,846				436,328			2,500
Consumer:
Home equity credit line	14,952			135				11,455			59
1-4 family residential	80,154			448				99,191			382
Construction and other consumer real estate	3,332			35				6,122			46
Other	704			—				1,816			—
Total consumer loans	99,142			618				118,584			487
FDIC-supported loans	283,782			22,305			1	447,841			25,153			1
Total	$	907,227		$	26,545			$	1,363,323		$	29,802
1 The balance of interest income recognized results primarily from accretion of interest income on impaired FDIC-supported loans.
Summary Of Selected Information On TDRs That Includes Recorded Investment On An Accruing And Nonaccruing Basis By Loan Class And Modification Type	'																						'
		Three Months Ended										Three Months Ended												March 31, 2014
		31-Mar-14										31-Mar-13												Recorded investment resulting from the following modification types:
	(In thousands)	Accruing			Nonaccruing				Total			Accruing				Nonaccruing			Total				(In thousands)	Interest		Maturity		Principal		Payment		Other1		Multiple		Total
	Commercial:																							rate below		or term		forgiveness		deferral				modification
	Commercial and industrial	$	—		$	—			$	—		$	—			$	25		$	25				market		extension								types2
																							Accruing
	Owner occupied	—			—				—			—				135			135				Commercial:
																							Commercial and industrial	$	640	$	8,738	$	21	$	3,553	$	4,214	$	64,547	$	81,713
	Total commercial	—			—				—			—				160			160
																							Owner occupied	22,484		1,072		980		1,282		9,573		21,437		56,828
	Commercial real estate:
	Term	—			84				84			—				1,071			1,071				Total commercial	23,124		9,810		1,001		4,835		13,787		85,984		138,541
	Total commercial real estate	—			84				84			—				1,071			1,071				Commercial real estate:
																							Construction and land development	—		8,003		—		1,077		562		23,328		32,970
	Consumer:
	Home equity credit line	—			217				217			—				85			85				Term	8,603		8,980		188		3,695		4,151		59,215		84,832
	Construction and other consumer real estate	—			26				26			—				—			—				Total commercial real estate	8,603		16,983		188		4,772		4,713		82,543		117,802
	Total consumer loans	—			243				243			—				85			85				Consumer:
																							Home equity credit line	742		34		10,158		—		164		426		11,524
	Total	$	—		$	327			$	327		$	—			$	1,316		$	1,316
																							1-4 family residential	2,608		55		6,966		638		1,437		37,323		49,027
																							Construction and other consumer real estate	123		326		49		—		—		1,494		1,992
																							Total consumer loans	3,473		415		17,173		638		1,601		39,243		62,543
																							Total accruing	35,200		27,208		18,362		10,245		20,101		207,770		318,886
																							Nonaccruing
																							Commercial:
																							Commercial and industrial	1,881		6,412		—		412		409		18,800		27,914
																							Owner occupied	2,678		1,184		1,037		1,558		6,917		16,599		29,973
																							Total commercial	4,559		7,596		1,037		1,970		7,326		35,399		57,887
																							Commercial real estate:
																							Construction and land development	11,555		1,075		—		—		1,645		11,895		26,170
																							Term	2,311		84		—		1,867		392		15,577		20,231
																							Total commercial real estate	13,866		1,159		—		1,867		2,037		27,472		46,401
																							Consumer:
																							Home equity credit line	—		—		793		—		217		69		1,079
																							1-4 family residential	4,249		48		1,784		—		3,257		14,581		23,919
																							Construction and other consumer real estate	4		1,105		—		—		—		139		1,248
																							Bankcard and other revolving plans	—		—		—		—		—		—		—
																							Total consumer loans	4,253		1,153		2,577		—		3,474		14,789		26,246
																							Total nonaccruing	22,678		9,908		3,614		3,837		12,837		77,660		130,534
																							Total	$	57,878	$	37,116	$	21,976	$	14,082	$	32,938	$	285,430	$	449,420
																								December 31, 2013
																								Recorded investment resulting from the following modification types:
																							(In thousands)	Interest		Maturity		Principal		Payment		Other1		Multiple		Total
																								rate below		or term		forgiveness		deferral				modification
																								market		extension								types2
																							Accruing
																							Commercial:
																							Commercial and industrial	$	1,143	$	9,848	$	11,491	$	3,217	$	4,308	$	53,117	$	83,124
																							Owner occupied	22,841		1,482		987		1,291		9,659		23,576		59,836
																							Total commercial	23,984		11,330		12,478		4,508		13,967		76,693		142,960
																							Commercial real estate:
																							Construction and land development	1,067		8,231		—		1,063		4,119		28,295		42,775
																							Term	7,542		9,241		190		3,783		14,932		61,024		96,712
																							Total commercial real estate	8,609		17,472		190		4,846		19,051		89,319		139,487
																							Consumer:
																							Home equity credit line	743		—		9,438		—		323		332		10,836
																							1-4 family residential	2,628		997		6,814		643		3,083		35,869		50,034
																							Construction and other consumer real estate	128		329		11		—		—		1,514		1,982
																							Total consumer loans	3,499		1,326		16,263		643		3,406		37,715		62,852
																							Total accruing	36,092		30,128		28,931		9,997		36,424		203,727		345,299
																							Nonaccruing
																							Commercial:
																						Commercial and industrial	2,028		6,989		—		473		8,948		10,395		28,833
																						Owner occupied	3,020		1,489		1,043		1,593		10,482		14,927		32,554
																						Total commercial	5,048		8,478		1,043		2,066		19,430		25,322		61,387
																						Commercial real estate:
																						Construction and land development	11,699		1,555		—		—		5,303		8,617		27,174
																						Term	2,126		—		—		1,943		315		14,861		19,245
																						Total commercial real estate	13,825		1,555		—		1,943		5,618		23,478		46,419
																						Consumer:
																						Home equity credit line	—		—		1,036		—		221		—		1,257
																						1-4 family residential	4,315		1,396		1,606		—		3,901		14,109		25,327
																						Construction and other consumer real estate	4		1,260		—		—		—		229		1,493
																						Bankcard and other revolving plans	—		252		—		—		—		—		252
																						Total consumer loans	4,319		2,908		2,642		—		4,122		14,338		28,329
																						Total nonaccruing	23,192		12,941		3,685		4,009		29,170		63,138		136,135
																						Total	$	59,284	$	43,069	$	32,616	$	14,006	$	65,594	$	266,865	$	481,434
																						1 Includes TDRs that resulted from other modification types including, but not limited to, a legal judgment awarded on different terms, a bankruptcy plan confirmed on different terms, a settlement that includes the delivery of collateral in exchange for debt reduction, etc.
																						2 Includes TDRs that resulted from a combination of any of the previous modification types.
Schedule Of Net Financial Impact On Interest Income Due To Interest Rate Modifications Below Market For Accruing TDR Loans	'																						'
	(In thousands)	Three Months Ended
		March 31,
		2014			2013
	Commercial:
	Commercial and industrial	$	212		$	(181	)
	Owner occupied	(1,709		)	(1,060		)
	Total commercial	(1,497		)	(1,241		)
	Commercial real estate:
	Construction and land development	(666		)	(416		)
	Term	(1,778		)	(2,659		)
	Total commercial real estate	(2,444		)	(3,075		)
	Consumer:
	Home equity credit line	(24		)	(39		)
	1-4 family residential	(3,601		)	(3,860		)
	Construction and other consumer real estate	(105		)	(109		)
	Total consumer loans	(3,730		)	(4,008		)
	Total decrease to interest income1	$	(7,671	)	$	(8,324	)
	1Calculated based on the difference between the modified rate and the premodified rate applied to the recorded investment.
Schedule Of Outstanding Balances Of All Required Payments And The Related Carrying Amounts For PCI Loans	'																						'
	(In thousands)	March 31,			December 31,
		2014			2013
	Commercial	$	130,834		$	150,191
	Commercial real estate	173,714			233,720
	Consumer	23,724			28,608
	Outstanding balance	$	328,272		$	412,519
	Carrying amount	$	249,563		$	311,797
	ALLL	4,203			6,478
	Carrying amount, net	$	245,360		$	305,319
Schedule Of Changes In The Accretable Yield For PCI Loans	'																						'
	(In thousands)	Three Months Ended
		March 31,
		2014			2013
	Balance at beginning of period	$	77,528		$	134,461
	Accretion	(22,307		)	(25,266		)
	Reclassification from nonaccretable difference	8,920			14,872
	Disposals and other	1,624			2,292
	Balance at end of period	$	65,765		$	126,359

Derivative_Instruments_And_Hed1

Derivative Instruments And Hedging Activities Derivative Instruments and Hedging Activities (Tables)	3 Months Ended
	Mar. 31, 2014
Summary of Derivative Instruments [Abstract]	'
Schedule of Derivative Instruments	'
		March 31, 2014							December 31, 2013
		Notional		Fair value					Notional		Fair value
	(In thousands)	amount		Other		Other			amount		Other			Other
				assets		liabilities					assets			liabilities
	Derivatives designated as hedging instruments
	Asset derivatives
	Cash flow hedges:
	Interest rate swaps	$	150,000	$	298	$	492		$	100,000	$	202		$	583
	Total derivatives designated as hedging instruments	150,000		298		492			100,000		202			583
	Derivatives not designated as hedging instruments
	Interest rate swaps	60,967		332		286			65,850		420			421
	Interest rate swaps for customers 2	2,900,444		50,644		51,000			2,902,776		55,447			54,688
	Foreign exchange	434,058		6,409		5,412			751,066		9,614			8,643
	Total return swap	1,159,686		—		5,399			1,159,686		—			4,062
	Total derivatives not designated as hedging instruments	4,555,155		57,385		62,097			4,879,378		65,481			67,814
	Total derivatives	$	4,705,155	$	57,683	$	62,589		$	4,979,378	$	65,683		$	68,397
Schedule Of Gain (Loss) Of Derivative Instruments	'
		Three Months Ended March 31, 2014									Three Months Ended March 31, 2013
		Amount of derivative gain (loss) recognized/reclassified
	(In thousands)	OCI		Reclassified		Noninterest			Offset to		OCI			Reclassified		Noninterest			Offset to
				from AOCI		income			interest					from AOCI		income			interest
				to interest		(expense)			expense					to interest		(expense)			expense
				income 3										income 3
	Derivatives designated as hedging instruments
	Asset derivatives
	Cash flow hedges 1:
	Interest rate swaps	$	538	$	351	$	—				$	(4	)	$	1,605	$	—
		538		351		—					(4		)	1,605		—
	Liability derivatives
	Fair value hedges:
	Terminated swaps on long-term debt								$	718									$	766
	Total derivatives designated as hedging instruments	538		351		—			718		(4		)	1,605		—			766
	Derivatives not designated as hedging instruments
	Interest rate swaps					6										(67		)
	Interest rate swaps for customers 2					(549		)								1,458
	Futures contracts					—										1
	Foreign exchange					1,711										2,754
	Total return swap					(7,427		)								(5,558		)
	Total derivatives not designated as hedging instruments					(6,259		)								(1,412		)
	Total derivatives	$	538	$	351	$	(6,259	)	$	718	$	(4	)	$	1,605	$	(1,412	)	$	766
	Note: These schedules are not intended to present at any given time the Company’s long/short position with respect to its derivative contracts.
	1 Amounts recognized in OCI and reclassified from accumulated OCI (“AOCI”) represent the effective portion of the derivative gain (loss).
	2	Amounts include both the customer swaps and the offsetting derivative contracts.
	3 Amounts for the three months ended March 31 2014 and 2013 of $0.4 million and $1.6 million, respectively, are the amounts of reclassification to earnings from AOCI presented in Note 8.

Debt_And_Shareholders_Equity_T

Debt And Shareholders' Equity (Tables)	3 Months Ended
	Mar. 31, 2014
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]	'
Reclassification out of Accumulated Other Comprehensive Income [Table Text Block]	'
		Amounts reclassified from AOCI 1								Statement of income (SI) Balance sheet
	(In thousands)	Three Months Ended March 31,								(BS)
	Details about AOCI components	2014				2013						Affected line item
	Net realized gains on investment securities	$	30,914			$	3,299			SI		Fixed income securities gains, net
	Income tax expense	6,074				1,262
		24,840				2,037
	Net unrealized losses on investment	(27		)		(9,714		)		SI		Net impairment losses on investment securities
	securities
	Income tax benefit	(10		)		(3,715		)
		(17		)		(5,999		)
	Accretion of securities with noncredit-related impairment losses not expected to be sold	(482		)		(344		)		BS		Investment securities, held-to-maturity
	Deferred income taxes	196				135				BS		Other assets
		$	24,537			$	(4,171	)
	Net unrealized gains on derivative instruments	$	351			$	1,605			SI		Interest and fees on loans
	Income tax expense	141				648
		$	210			$	957
Schedule Of Changes In Accumulated Other Comprehensive Income (Loss)	'
	(In thousands)	Net unrealized gains (losses) on investment securities						Net unrealized gains (losses) on derivative instruments					Pension and post-retirement			Total
	Three Months Ended March 31, 2014
	Balance at December 31, 2013		$	(167,032	)				$	(217	)		$	(24,852	)	$	(192,101	)
	Other comprehensive income before reclassifications, net of tax		71,066						320				—			71,386
	Amounts reclassified from AOCI, net of tax		(24,537		)				(210		)		—			(24,747		)
	Other comprehensive income		46,529						110				—			46,639
	Balance at March 31, 2014		$	(120,503	)				$	(107	)		$	(24,852	)	$	(145,462	)
	Income tax expense included in other comprehensive income		$	38,636					$	77			$	—		$	38,713
	Three Months Ended March 31, 2013
	Balance at December 31, 2012		$	(397,616	)				$	1,794			$	(50,335	)	$	(446,157	)
	Other comprehensive income (loss) before reclassifications, net of tax		36,042						(2		)		—			36,040
	Amounts reclassified from AOCI, net of tax		4,171						(957		)		—			3,214
	Other comprehensive income (loss)		40,213						(959		)		—			39,254
	Balance at March 31, 2013		$	(357,403	)				$	835			$	(50,335	)	$	(406,903	)
	Income tax expense (benefit) included in other comprehensive income (loss)		$	23,853					$	(650	)		$	—		$	23,203

Fair_Value_Tables

Fair Value (Tables)	3 Months Ended
	Mar. 31, 2014
Fair Value Disclosures [Abstract]	'
Schedule Of Assets And Liabilities Measured At Fair Value By Class On A Recurring Basis	'
	(In thousands)	March 31, 2014
		Level 1			Level 2			Level 3				Total
	ASSETS
	Investment securities:
	Available-for-sale:
	U.S. Treasury, agencies and corporations				$	2,252,014						$	2,252,014
	Municipal securities				141,222			$	10,184			151,406
	Asset-backed securities:
	Trust preferred – banks and insurance				69,194			690,217				759,411
	Trust preferred – real estate investment trusts							—				—
	Auction rate							6,560				6,560
	Other				1,722			30				1,752
	Mutual funds and stock	$	231,405		20,657							252,062
		231,405			2,484,809			706,991				3,423,205
	Trading account				56,172							56,172
	Other noninterest-bearing investments:
	Bank-owned life insurance				469,241							469,241
	Private equity				4,923			81,052				85,975
	Other assets:
	Agriculture loan servicing and interest-only strips							11,207				11,207
	Deferred compensation plan assets	88,606										88,606
	Derivatives:
	Interest rate related and other				630							630
	Interest rate swaps for customers				50,644							50,644
	Foreign currency exchange contracts	6,409										6,409
		6,409			51,274							57,683
		$	326,420		$	3,066,419		$	799,250			$	4,192,089
	LIABILITIES
	Securities sold, not yet purchased	$	1,340									$	1,340
	Other liabilities:
	Deferred compensation plan obligations	88,606										88,606
	Derivatives:
	Interest rate related and other				$	778						778
	Interest rate swaps for customers				51,000							51,000
	Foreign currency exchange contracts	5,412										5,412
	Total return swap							$	5,399			5,399
		5,412			51,778			5,399				62,589
	Other							233				233
		$	95,358		$	51,778		$	5,632			$	152,768
	(In thousands)	December 31, 2013
		Level 1			Level 2			Level 3				Total
	ASSETS
	Investment securities:
	Available-for-sale:
	U.S. Treasury, agencies and corporations	$	—		$	2,059,105						$	2,059,105
	Municipal securities				55,602			$	10,662			66,264
	Asset-backed securities:
	Trust preferred – banks and insurance				—			1,238,820				1,238,820
	Trust preferred – real estate investment trusts							22,996				22,996
	Auction rate							6,599				6,599
	Other				2,099			25,800				27,899
	Mutual funds and stock	259,750			20,453							280,203
		259,750			2,137,259			1,304,877				3,701,886
	Trading account				34,559							34,559
	Other noninterest-bearing investments:
	Bank-owned life insurance				466,428							466,428
	Private equity				4,822			82,410				87,232
	Other assets:
	Agriculture loan servicing and interest-only strips							8,852				8,852
	Deferred compensation plan assets	86,184										86,184
	Derivatives:
	Interest rate related and other				622							622
	Interest rate swaps for customers				55,447							55,447
Foreign currency exchange contracts	9,614										9,614
	9,614			56,069							65,683
	$	355,548		$	2,699,137		$	1,396,139			$	4,450,824
LIABILITIES
Securities sold, not yet purchased	$	73,606									$	73,606
Other liabilities:
Deferred compensation plan obligations	86,184										86,184
Derivatives:
Interest rate related and other				$	1,004						1,004
Interest rate swaps for customers				54,688							54,688
Foreign currency exchange contracts	8,643										8,643
Total return swap							$	4,062			4,062
	8,643			55,692			4,062				68,397
Other							241				241
	$	168,433		$	55,692		$	4,303			$	228,428
Schedule Of Assets And Liabilities Measured At Fair Value By Class On A Recurring Basis Using Level 3 Inputs	'
		Level 3 Instruments
		Three Months Ended March 31, 2014
	(In thousands)	Municipal			Trust			Trust				Auction				Other				Private			Ag loan svcg and int-only strips			Derivatives
		securities			preferred – banks and insurance			preferred				rate				asset-backed				equity						and other
								– REIT												investments						liabilities
	Balance at December 31, 2013	$	10,662		$	1,238,820		$	22,996			$	6,599			$	25,800			$	82,410		$	8,852		$	(4,303	)
	Net gains (losses) included in:
	Statement of income:
	Accretion of purchase discount on securities available-for-sale	10			720							1
	Dividends and other investment income																			(1,695		)
	Fair value and nonhedge derivative loss																									(7,427		)
	Fixed income securities gains, net	16			18,582			1,399								10,917
	Other noninterest income																						481
	Other noninterest expense																									8
	Other comprehensive income	(274		)	94,462							(40		)		(15		)
	Purchases																			1,356			2,077
	Sales				(546,388		)	(24,395		)						(36,669		)		(824		)
	Redemptions and paydowns	(230		)	(46,786		)									(3		)		(195		)	(203		)	6,090
	Transfers to Level 2				(69,193		)
	Balance at March 31, 2014	$	10,184		$	690,217		$	—			$	6,560			$	30			$	81,052		$	11,207		$	(5,632	)
		Level 3 Instruments
		Three Months Ended March 31, 2013
	(In thousands)	Municipal			Trust			Trust				Auction				Other				Private			Ag loan svcg and int-only strips			Derivatives
		securities			preferred – banks and insurance			preferred – REIT				rate				asset-backed				equity						and other
																				investments						liabilities
	Balance at December 31, 2012	$	16,551		$	949,271		$	16,403			$	6,515			$	15,160			$	64,223		$	8,334		$	(5,251	)
	Net gains (losses) included in:
	Statement of income:
	Accretion of purchase discount on securities available-for-sale	21			815			63				1				5
	Dividends and other investment income																			2,989
	Fair value and nonhedge derivative loss																									(5,558		)
	Equity securities gains, net																			2,399
	Fixed income securities gains, net	21			3,226											30
	Net impairment losses on investment securities				(9,714		)
	Other noninterest income																						119
	Other noninterest expense																									(71		)
	Other comprehensive income	725			78,650			840				8				2,651
	Purchases																			959
	Sales																			(733		)
	Redemptions and paydowns	(275		)	(19,146		)									(2,453		)		(131		)	(201		)	5,810
	Balance at March 31, 2013	$	17,043		$	1,003,102		$	17,306			$	6,524			$	15,393			$	69,706		$	8,252		$	(5,070	)
Schedule Of Realized Gains (Losses) Using Level 3 Inputs	'
		(In thousands)	Three Months Ended March 31,
			2014			2013
		Dividends and other investment income	$	34		$	15
		Fixed income securities gains, net	30,914			3,277
Summary of Quantitative Information Relating to the Principal Valuation Techniques and Significant Unobservable Inputs for Level 3 [Table Text Block]	'
		Level 3 Instruments
		Quantitative information at March 31, 2014
	(Dollar amounts in thousands)	Fair value			Principal valuation techniques		Significant unobservable inputs	Range of inputs
								(% annually)
	Asset-backed securities:
	Trust preferred – predominantly banks 1	$	744,840		Discounted cash flow		Constant prepayment rate	until 2016 – 5.50% to 23.30%
					Market comparables
								2016 to maturity – 3.0%
							Constant default rate	yr 1 – 0.30% to 2.17%
								yrs 2-5 – 0.48% to 0.82 %
								yrs 6 to maturity – 0.59% to 0.65%
							Loss given default	100%
							Loss given deferral	13.56% to 100%
							Discount rate	5.3% to 5.6%
							(spread over forward LIBOR)
	1 Amount consists of $690.2 million AFS and $54.6 million HTM.
		Level 3 Instruments
		Quantitative information at December 31, 2013
	(Dollar amounts in thousands)	Fair value			Principal valuation techniques		Significant unobservable inputs	Range of inputs
								(% annually)
	Asset-backed securities:
	Trust preferred – predominantly banks	$	921,819		Discounted cash flow		Constant prepayment rate	until 2016 – 5.50% to 20.73%
					Market comparables
								2016 to maturity – 3.0%
							Constant default rate	yr 1 – 0.30% to 1.94%
								yrs 2-5 – 0.49% to 1.14%
								yrs 6 to maturity – 0.58% to 0.65%
							Loss given default	100%
							Loss given deferral	14.39% to 100%
							Discount rate	5.6% to 7.7%
							(spread over forward LIBOR)
	Trust preferred – predominantly insurance	346,390			Discounted cash flow		Constant prepayment rate	until maturity – 5.0%
					Market comparables
							Constant default rate	yr 1 – 0.38% to 1.03%
								yrs 2-5 – 0.53% to 0.89%
								yrs 6 to maturity – 0.50% to 0.55%
							Loss given default	100%
							Loss given deferral	2.18% to 30.13%
							Discount rate	3.72% to 6.49%
							(spread over forward LIBOR)
	Trust preferred – individual banks	22,324			Market comparables		Yield	6.6% to 7.8%
							Price	81.25% to 109.6%
	Trust preferred – real estate investment trust	22,996			Discounted cash flow		Constant prepayment rate	until maturity – 0.0%
					Market comparables
							Constant default rate	yr 1 – 4.1% to 10.6%
								yrs 2-3 – 4.6% to 5.5%
								yrs 4-6 – 1.0%
								yrs 7 to maturity – 0.50%
							Loss given default	60% to 100%
							Discount rate	5.5% to 15%
							(spread over forward LIBOR)
	Other (predominantly ABS CDOs)	25,800			Discounted cash flow		Constant default rate	0.01% to 100%
							Loss given default	70% to 92%
							Discount rate	9% to 22%
							(spread over forward LIBOR)
Schedule Of Assets With Fair Value Changes On Nonrecurring Basis	'
	(In thousands)	Fair value at March 31, 2014														Fair value at December 31, 2013
		Level 1			Level 2			Level 3				Total				Level 1				Level 2			Level 3			Total
	ASSETS
	HTM securities adjusted for OTTI	$	—		$	—		$	71			$	71			$	—			$	—		$	8,483		$	8,483
	Private equity investments, carried at cost	—			—			—				—				—				—			13,270			13,270
	Impaired loans	—			21,943			—				21,943				—				11,765			—			11,765
	Other real estate owned	—			13,720			—				13,720				—				24,684			—			24,684
		$	—		$	35,663		$	71			$	35,734			$	—			$	36,449		$	21,753		$	58,202
	The previous fair values may not be current as of the dates indicated, but rather as of the date the fair value change occurred, such as a charge for impairment. Accordingly, carrying values may not equal current fair value.
		Gains (losses) from fair value changes
	(In thousands)	Three Months Ended
		March 31,
		2014			2013
	ASSETS
	HTM securities adjusted for OTTI	$	(27	)	$	(403	)
	Private equity investments, carried at cost	—			(820		)
	Impaired loans	(2,177		)	(883		)
	Other real estate owned	(2,234		)	(4,691		)
		$	(4,438	)	$	(6,797	)
Fair Value, by Balance Sheet Grouping [Table Text Block]	'
			March 31, 2014
	(In thousands)												Gross amounts not offset in the balance sheet
	Description		Gross amounts recognized			Gross amounts offset in the balance sheet			Net amounts presented in the balance sheet				Financial instruments				Cash collateral received/pledged				Net amount
	Assets:
	Federal funds sold and security resell agreements		$	379,947		$	—		$	379,947			$	—			$	—			$	379,947
	Derivatives (included in other assets)		57,683			—			57,683				(8,646		)		760				49,797
			$	437,630		$	—		$	437,630			$	(8,646	)		$	760			$	429,744
	Liabilities:
	Federal funds and other short-term borrowings		$	279,837		$	—		$	279,837			$	—			$	—			$	279,837
	Derivatives (included in other liabilities)		62,589			—			62,589				(8,646		)		(29,260		)		24,683
			$	342,426		$	—		$	342,426			$	(8,646	)		$	(29,260	)		$	304,520
			December 31, 2013
	(In thousands)												Gross amounts not offset in the balance sheet
	Description		Gross amounts recognized			Gross amounts offset in the balance sheet			Net amounts presented in the balance sheet				Financial instruments				Cash collateral received/pledged				Net amount
	Assets:
	Federal funds sold and security resell agreements		$	282,248		$	—		$	282,248			$	—			$	—			$	282,248
	Derivatives (included in other assets)		65,683			—			65,683				(11,650		)		2,210				56,243
			$	347,931		$	—		$	347,931			$	(11,650	)		$	2,210			$	338,491
	Liabilities:
	Federal funds and other short-term borrowings		$	340,348		$	—		$	340,348			$	—			$	—			$	340,348
	Derivatives (included in other liabilities)		68,397			—			68,397				(11,650		)		(26,997		)		29,750
			$	408,745		$	—		$	408,745			$	(11,650	)		$	(26,997	)		$	370,098
		March 31, 2014								December 31, 2013
	(In thousands)	Carrying			Estimated			Level		Carrying				Estimated				Level
		value			fair value					value				fair value
	Financial assets:
	HTM investment securities	$	606,279		$	635,379		3		$	588,981			$	609,547			3
	Loans and leases (including loans held for sale), net of allowance	38,587,527			38,333,815			3		38,468,402				38,088,242				3
	Financial liabilities:
	Time deposits	2,528,735			2,536,904			2		2,593,038				2,602,955				2
	Foreign deposits	1,648,111			1,647,876			2		1,980,161				1,979,805				2
	Long-term debt (less fair value hedges)	2,155,606			2,301,239			2		2,269,762				2,423,643				2

Commitments_Guarantees_And_Con1

Commitments, Guarantees, And Contingent Liabilities (Tables)	3 Months Ended
	Mar. 31, 2014
Guarantees, Commitments And Contingencies [Abstract]	'
Schedule Of Guarantees Issued	'
	(In thousands)	March 31,		December 31,
		2014		2013
	Unfunded commitments to extend credit	$	16,443,367	$	16,174,326
	Standby letters of credit:
	Financial	812,011		779,811
	Performance	180,453		159,485
	Commercial letters of credit	72,806		80,218
	Total unfunded lending commitments	$	17,508,637	$	17,193,840

Retirement_Plans_Tables

Retirement Plans (Tables)	3 Months Ended
	Mar. 31, 2014
Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]	'
Schedule Of Net Periodic Benefit Cost (Credit) For Pension And Postretirement Plans	'
		Pension benefits						Supplemental				Postretirement
								retirement				benefits
								benefits
	(In thousands)	Three Months Ended March 31,
		2014			2013			2014		2013		2014			2013
	Service cost	$	—		$	—		$	—	$	—	$	8		$	8
	Interest cost	1,880			1,739			113		101		12			10
	Expected return on plan assets	(3,326		)	(3,027		)
	Amortization of prior service							13		31		—			(37		)
	cost (credit)
	Amortization of net actuarial	797			2,157			5		17		(18		)	(19		)
	(gain) loss
	Net periodic benefit cost (credit)	$	(649	)	$	869		$	131	$	149	$	2		$	(38	)

Operating_Segment_Information_

Operating Segment Information (Tables)	3 Months Ended
	Mar. 31, 2014
Operating Segment Information [Abstract]	'
Schedule of Segment Reporting Information, by Segment	'
	(In millions)	Zions Bank						CB&T						Amegy						NBAZ						NSB
		2014			2013			2014			2013			2014			2013			2014			2013			2014			2013
	CONDENSED INCOME STATEMENT
	Net interest income	$	142.5		$	151.5		$	109.2		$	114.6		$	94.7		$	95.4		$	40.3		$	40.5		$	27.9		$	27.4
	Provision for loan losses	(8.7		)	1.8			(2.1		)	(6.8		)	16.9			(13.8		)	(3.0		)	—			(2.6		)	(0.2		)
	Net interest income after provision for loan losses	151.2			149.7			111.3			121.4			77.8			109.2			43.3			40.5			30.5			27.6
	Net impairment losses on investment securities	—			—			—			—			—			—			—			—			—			—
	Other noninterest income	44			50.3			5.8			21.6			32			38.4			8.3			8.2			4.9			8.9
	Noninterest expense	121.5			115			85.3			90.3			87			84.2			37.3			34.2			32.1			31.7
	Income (loss) before income taxes	73.7			85			31.8			52.7			22.8			63.4			14.3			14.5			3.3			4.8
	Income tax expense (benefit)	26.8			31			12.1			20.8			7.3			21.3			5.2			5.4			1			1.6
	Net income (loss)	$	46.9		$	54		$	19.7		$	31.9		$	15.5		$	42.1		$	9.1		$	9.1		$	2.3		$	3.2
	AVERAGE BALANCE SHEET DATA
	Total assets	$	18,275		$	17,055		$	10,889		$	10,922		$	13,467		$	12,690		$	4,612		$	4,592		$	3,991		$	4,052
	Cash and due from banks	340			350			166			175			322			321			73			69			89			86
	Money market investments	3,545			2,507			1,129			1,327			2,503			2,183			288			479			699			994
	Total securities	1,596			1,239			327			344			242			412			365			274			781			742
	Total loans	12,247			12,357			8,538			8,275			9,362			8,595			3,696			3,552			2,306			2,098
	Total deposits	15,980			14,743			9,272			9,309			11,099			10,291			3,952			3,894			3,598			3,593
	Shareholder’s equity:
	Preferred equity	280			280			162			162			153			251			120			180			50			139
	Common equity	1,538			1,509			1,350			1,327			1,849			1,744			422			401			318			298
	Noncontrolling interests	—			—			—			—			—			—			—			—			—			—
	Total shareholder’s equity	1,818			1,789			1,512			1,489			2,002			1,995			542			581			368			437
		Vectra						TCBW						Other						Consolidated
																				Company
		2014			2013			2014			2013			2014			2013			2014			2013
	CONDENSED INCOME STATEMENT
	Net interest income	$	25.3		$	25.6		$	7		$	6.5		$	(30.4	)	$	(43.4	)	$	416.5		$	418.1
	Provision for loan losses	(1.8		)	(8.6		)	0.7			(0.9		)	—			(0.5		)	(0.6		)	(29.0		)
	Net interest income after provision for loan losses	27.1			34.2			6.3			7.4			(30.4		)	(42.9		)	417.1			447.1
	Net impairment losses on investment securities	—			—			—			—			—			(10.1		)	—			(10.1		)
	Other noninterest income	3.8			7			(1.0		)	1			40.5			(4.1		)	138.3			131.3
	Noninterest expense	25.3			25.1			4.5			4.9			5.1			11.9			398.1			397.3
	Income (loss) before income taxes	5.6			16.1			0.8			3.5			5			(69.0		)	157.3			171
	Income tax expense (benefit)	1.8			5.8			0.3			1.2			1.6			(26.5		)	56.1			60.6
	Net income (loss)	$	3.8		$	10.3		$	0.5		$	2.3		$	3.4		$	(42.5	)	$	101.2		$	110.4
	AVERAGE BALANCE SHEET DATA
	Total assets	$	2,569		$	2,463		$	873		$	880		$	758		$	1,207		$	55,434		$	53,861
	Cash and due from banks	47			52			21			19			(17		)	(9		)	1,041			1,063
	Money market investments	14			46			118			181			(159		)	395			8,137			8,112
	Total securities	164			184			90			101			552			519			4,117			3,815
	Total loans	2,280			2,092			631			565			65			64			39,125			37,598
	Total deposits	2,168			2,107			742			735			(1,033		)	(262		)	45,778			44,410
	Shareholder’s equity:
	Preferred equity	70			70			3			3			166			145			1,004			1,230
	Common equity	247			227			88			82			(217		)	(598		)	5,595			4,990
	Noncontrolling interests	—			—			—			—			—			(4		)	—			(4		)
	Total shareholder’s equity	317			297			91			85			(51		)	(457		)	6,599			6,216

Basis_of_Presentaion_Details

Basis of Presentaion (Details)	Mar. 31, 2014
	States
Basis Of Presentation [Abstract]	'
Number of States in which Entity Operates	10

Supplemental_Cash_Flow_Informa2

Supplemental Cash Flow Information (Schedule Of Noncash Activities) (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Other Significant Noncash Transactions [Line Items]	'	'
Loans Transfered to Other Real Estate Owned	$6,338	$23,442
Transfer of Portfolio Loans and Leases to Held-for-sale	3,789	96
Beneficial Conversion Feature Transferred From Common Stock to Preferred Stock as a Result of Subordinated Debt Conversions	0	169
Subordinated debt converted to preferred stock	$0	$991

Cash_and_Money_Market_Investme2

Cash and Money Market Investments Cash and Money Market Investments (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Other Liabilities [Member]	'	'
Gain (Loss) on Investments [Line Items]	'	'
Derivative Liability, Fair Value, Gross Liability	$62,589	$68,397
Federal Funds Sold and Securities Borrowed or Purchased under Agreements to Resell [Member] | Assets [Member]	'	'
Gain (Loss) on Investments [Line Items]	'	'
Gross amounts recognized	379,947	282,248
Gross amounts offset in the balance sheet	0	0
Net amounts presented in the balance sheet	379,947	282,248
Net amount	379,947	282,248
Assets, Total [Member] | Assets [Member]	'	'
Gain (Loss) on Investments [Line Items]	'	'
Gross amounts recognized	437,630	347,931
Gross amounts offset in the balance sheet	0	0
Net amounts presented in the balance sheet	437,630	347,931
Net amount	429,744	338,491
Federal Funds Purchased and Securities Sold under Agreements to Repurchase [Member] | Other Liabilities [Member]	'	'
Gain (Loss) on Investments [Line Items]	'	'
Gross amounts recognized	279,837	340,348
Gross amounts offset in the balance sheet	0	0
Net amounts presented in the balance sheet	279,837	340,348
Net amount	279,837	340,348
Liabilities, Total [Member] | Other Liabilities [Member]	'	'
Gain (Loss) on Investments [Line Items]	'	'
Gross amounts recognized	342,426	408,745
Gross amounts offset in the balance sheet	0	0
Net amounts presented in the balance sheet	342,426	408,745
Net amount	304,520	370,098
Derivative Assets Included In Other Assets [Member] | Assets [Member]	'	'
Gain (Loss) on Investments [Line Items]	'	'
Gross amounts recognized	57,683	65,683
Gross amounts offset in the balance sheet	0	0
Net amounts presented in the balance sheet	57,683	65,683
Net amount	49,797	56,243
Derivative Liabilities Offsets In Other Assets-Offset [Member] | Other Liabilities [Member]	'	'
Gain (Loss) on Investments [Line Items]	'	'
Gross amounts offset in the balance sheet	0	0
Net amounts presented in the balance sheet	62,589	68,397
Net amount	24,683	29,750
Derivative Liability, Fair Value, Gross Liability	62,589	68,397
Cash collateral received/pledged [Domain] | Federal Funds Sold and Securities Borrowed or Purchased under Agreements to Resell [Member] | Assets [Member]	'	'
Gain (Loss) on Investments [Line Items]	'	'
Gross amounts not offset in the balance sheet	0	0
Cash collateral received/pledged [Domain] | Assets, Total [Member] | Assets [Member]	'	'
Gain (Loss) on Investments [Line Items]	'	'
Gross amounts not offset in the balance sheet	760	2,210
Cash collateral received/pledged [Domain] | Federal Funds Purchased and Securities Sold under Agreements to Repurchase [Member] | Other Liabilities [Member]	'	'
Gain (Loss) on Investments [Line Items]	'	'
Gross amounts not offset in the balance sheet	0	0
Cash collateral received/pledged [Domain] | Liabilities, Total [Member] | Other Liabilities [Member]	'	'
Gain (Loss) on Investments [Line Items]	'	'
Gross amounts not offset in the balance sheet	-29,260	-26,997
Cash collateral received/pledged [Domain] | Derivative Assets Included In Other Assets [Member] | Assets [Member]	'	'
Gain (Loss) on Investments [Line Items]	'	'
Gross amounts not offset in the balance sheet	760	2,210
Cash collateral received/pledged [Domain] | Derivative Liabilities Offsets In Other Assets-Offset [Member] | Other Liabilities [Member]	'	'
Gain (Loss) on Investments [Line Items]	'	'
Gross amounts not offset in the balance sheet	-29,260	-26,997
Types of Financial Instruments [Domain] | Federal Funds Sold and Securities Borrowed or Purchased under Agreements to Resell [Member] | Assets [Member]	'	'
Gain (Loss) on Investments [Line Items]	'	'
Gross amounts not offset in the balance sheet	0	0
Types of Financial Instruments [Domain] | Assets, Total [Member] | Assets [Member]	'	'
Gain (Loss) on Investments [Line Items]	'	'
Gross amounts not offset in the balance sheet	-8,646	-11,650
Types of Financial Instruments [Domain] | Federal Funds Purchased and Securities Sold under Agreements to Repurchase [Member] | Other Liabilities [Member]	'	'
Gain (Loss) on Investments [Line Items]	'	'
Gross amounts not offset in the balance sheet	0	0
Types of Financial Instruments [Domain] | Liabilities, Total [Member] | Other Liabilities [Member]	'	'
Gain (Loss) on Investments [Line Items]	'	'
Gross amounts not offset in the balance sheet	-8,646	-11,650
Types of Financial Instruments [Domain] | Derivative Assets Included In Other Assets [Member] | Assets [Member]	'	'
Gain (Loss) on Investments [Line Items]	'	'
Gross amounts not offset in the balance sheet	-8,646	-11,650
Types of Financial Instruments [Domain] | Derivative Liabilities Offsets In Other Assets-Offset [Member] | Other Liabilities [Member]	'	'
Gain (Loss) on Investments [Line Items]	'	'
Gross amounts not offset in the balance sheet	($8,646)	($11,650)

Investment_Securities_Narrativ

Investment Securities (Narrative) (Details) (USD $)	0 Months Ended		1 Months Ended	3 Months Ended
	Feb. 12, 2014	Dec. 31, 2013	Feb. 12, 2014	Mar. 31, 2014
		Securities		Securities
Investment [Line Items]	'	'	'	'
Number of HTM investment securities in an unrealized loss position	'	157	'	126
Number of AFS investment securities in an unrealized loss position	'	317	'	334
Carrying value of pledged securities	'	$1,500,000,000	'	$1,500,000,000
Par Value of CDO Securities Sold	'	'	631,000,000	993,000,000
Proceeds from CDOs Sold	'	'	'	607,000,000
Gains on Paydowns of CDOs	'	'	'	5,000,000
Net Gains on Sales of CDOs	'	'	'	31,000,000
Available-for-sale Securities, Gross Realized Gains	65,000,000	'	'	'
Par Amount of Primarily Insurance CDOs Sold	'	'	'	301,000,000
Realized Losses on Sales of CDOs	'	'	'	39,000,000
Unrealized Losses on CDOs	'	$65,000,000	'	'

Investment_Securities_Summary_

Investment Securities (Summary Of Investment Securities) (Details) (USD $)	0 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Investment [Line Items]	'	'
Held-to-maturity, fair value	$635,379	$609,547
Held-to-maturity, Amortized cost	647,386	630,574
Held To Maturity Securities Gross Unrealized Gains	0	'
Held To Maturity Securities Gross Unrealized Gains Losses 1	'	0
Held To Maturity Securities Gross Unrealized Losses	41,107	'
Held To Maturity Securities Gross Unrealized Losses 1	'	41,593
Held-to-maturity, Carrying value	606,279	588,981
Available-for-sale debt securities, Amortized cost	3,323,647	'
Available-For-Sale Debt Securities, Gross Unrealized Gains, Recognized In O C I	48,464	'
Available-For-Sale Debt Securities, Gross Unrealized Losses, Recognized In O C I	200,968	'
Available-For-Sale Securities, Debt Securities, Net Carrying Amount	3,171,143	'
Available-for-sale debt securities, Estimated fair value	3,171,143	3,421,683
Available-for-sale Securities, Gross Unrealized Gain	48,644	48,345
Available-for-sale equity securities, Amortized cost	'	3,661,627
Gross Unrealized Gains on Debt Securities	'	48,324
Gross Unrealized Losses on AFS Debt Securities	'	288,268
Available-for-sale equity securities, Carrying value	'	3,421,683
Available-for-sale, Amortized cost	3,581,290	3,949,230
Available-for-sale, Gross unrealized losses, Recognized in OCI	206,729	295,689
Carrying value	3,423,205	3,701,886
Available-for-sale securities, Estimated fair value	3,423,205	3,701,886
Held-to-maturity Securities, Unrecognized Holding Gain	32,032	26,490
Held-to-maturity Securities, Unrecognized Holding Loss	2,932	5,924
amortized cost of investment securities	4,228,676	4,579,804
Gross Unrealized Gains of Investment Securities Recognized in OCI	48,644	48,345
Gross Unrealized Losses of Investment Securities Recognized in OCI	247,836	337,282
Carrying Value of Investment Securities	4,029,484	4,290,867
Estimated Fair Value of Investment Securities	4,058,584	4,311,433
Municipal Securities [Member]	'	'
Investment [Line Items]	'	'
Held-to-maturity, fair value	580,657	557,734
Held-to-maturity, Amortized cost	567,935	551,055
Held To Maturity Securities Gross Unrealized Gains	0	'
Held To Maturity Securities Gross Unrealized Gains Losses 1	'	0
Held To Maturity Securities Gross Unrealized Losses	0	'
Held To Maturity Securities Gross Unrealized Losses 1	'	0
Held-to-maturity, Carrying value	567,935	551,055
Available-for-sale debt securities, Amortized cost	150,897	65,425
Available-For-Sale Debt Securities, Gross Unrealized Gains, Recognized In O C I	1,213	'
Available-For-Sale Debt Securities, Gross Unrealized Losses, Recognized In O C I	704	'
Available-For-Sale Securities, Debt Securities, Net Carrying Amount	151,406	66,264
Available-for-sale debt securities, Estimated fair value	151,406	66,264
Available-for-sale Securities, Gross Unrealized Gain	'	1,329
Available-for-sale, Gross unrealized losses, Recognized in OCI	'	490
Held-to-maturity Securities, Unrecognized Holding Gain	14,429	11,295
Held-to-maturity Securities, Unrecognized Holding Loss	1,707	4,616
Trust Preferred Securities - Banks And Insurance [Member] | Asset-Backed Securities [Member]	'	'
Investment [Line Items]	'	'
Held-to-maturity, fair value	54,622	51,713
Held-to-maturity, Amortized cost	79,351	79,419
Held To Maturity Securities Gross Unrealized Gains	0	'
Held To Maturity Securities Gross Unrealized Gains Losses 1	'	0
Held To Maturity Securities Gross Unrealized Losses	41,107	'
Held To Maturity Securities Gross Unrealized Losses 1	'	41,593
Held-to-maturity, Carrying value	38,244	37,826
Available-for-sale debt securities, Amortized cost	934,353	'
Available-For-Sale Debt Securities, Gross Unrealized Gains, Recognized In O C I	13,578	'
Available-For-Sale Debt Securities, Gross Unrealized Losses, Recognized In O C I	188,520	'
Available-For-Sale Securities, Debt Securities, Net Carrying Amount	759,411	'
Available-for-sale debt securities, Estimated fair value	759,411	'
Available-for-sale Securities, Gross Unrealized Gain	'	13,439
Available-for-sale equity securities, Amortized cost	'	1,508,224
Available-for-sale equity securities, Carrying value	'	1,238,820
Available-for-sale, Gross unrealized losses, Recognized in OCI	'	282,843
Available-for-sale securities, Estimated fair value	'	1,238,820
Held-to-maturity Securities, Unrecognized Holding Gain	17,603	15,195
Held-to-maturity Securities, Unrecognized Holding Loss	1,225	1,308
Other [Member] | Asset-Backed Securities [Member]	'	'
Investment [Line Items]	'	'
Available-for-sale debt securities, Amortized cost	1,462	'
Available-For-Sale Debt Securities, Gross Unrealized Gains, Recognized In O C I	290	'
Available-For-Sale Debt Securities, Gross Unrealized Losses, Recognized In O C I	0	'
Available-For-Sale Securities, Debt Securities, Net Carrying Amount	1,752	'
Available-for-sale debt securities, Estimated fair value	1,752	'
Available-for-sale Securities, Gross Unrealized Gain	'	359
Available-for-sale equity securities, Amortized cost	'	27,540
Available-for-sale equity securities, Carrying value	'	27,899
Available-for-sale, Gross unrealized losses, Recognized in OCI	'	0
Available-for-sale securities, Estimated fair value	'	27,899
Other Debt Securities [Member] | Asset-Backed Securities [Member]	'	'
Investment [Line Items]	'	'
Held-to-maturity, fair value	100	100
Held-to-maturity, Amortized cost	100	100
Held To Maturity Securities Gross Unrealized Gains	0	'
Held To Maturity Securities Gross Unrealized Gains Losses 1	'	0
Held To Maturity Securities Gross Unrealized Losses	0	'
Held To Maturity Securities Gross Unrealized Losses 1	'	0
Held-to-maturity, Carrying value	100	100
Held-to-maturity Securities, Unrecognized Holding Gain	0	0
Held-to-maturity Securities, Unrecognized Holding Loss	0	0
U.S. Treasury Securities [Member]	'	'
Investment [Line Items]	'	'
Available-for-sale debt securities, Amortized cost	1,471	1,442
Available-For-Sale Debt Securities, Gross Unrealized Gains, Recognized In O C I	75	'
Available-For-Sale Debt Securities, Gross Unrealized Losses, Recognized In O C I	0	'
Available-For-Sale Securities, Debt Securities, Net Carrying Amount	1,546	1,546
Available-for-sale debt securities, Estimated fair value	1,546	1,546
Available-for-sale Securities, Gross Unrealized Gain	'	104
Available-for-sale, Gross unrealized losses, Recognized in OCI	'	0
Agency Securities [Member]	'	'
Investment [Line Items]	'	'
Available-for-sale debt securities, Amortized cost	561,153	517,905
Available-For-Sale Debt Securities, Gross Unrealized Gains, Recognized In O C I	2,595	'
Available-For-Sale Debt Securities, Gross Unrealized Losses, Recognized In O C I	5,997	'
Available-For-Sale Securities, Debt Securities, Net Carrying Amount	557,751	518,924
Available-for-sale debt securities, Estimated fair value	557,751	518,924
Available-for-sale Securities, Gross Unrealized Gain	'	1,920
Available-for-sale, Gross unrealized losses, Recognized in OCI	'	901
Agency Guaranteed Mortgage-Backed Securities [Member]	'	'
Investment [Line Items]	'	'
Available-for-sale debt securities, Amortized cost	301,020	308,687
Available-For-Sale Debt Securities, Gross Unrealized Gains, Recognized In O C I	10,662	'
Available-For-Sale Debt Securities, Gross Unrealized Losses, Recognized In O C I	844	'
Available-For-Sale Securities, Debt Securities, Net Carrying Amount	310,838	317,376
Available-for-sale debt securities, Estimated fair value	310,838	317,376
Available-for-sale Securities, Gross Unrealized Gain	'	9,926
Available-for-sale, Gross unrealized losses, Recognized in OCI	'	1,237
Small Business Administration Loan-Backed Securities [Member]	'	'
Investment [Line Items]	'	'
Available-for-sale debt securities, Amortized cost	1,366,783	1,202,901
Available-For-Sale Debt Securities, Gross Unrealized Gains, Recognized In O C I	19,964	'
Available-For-Sale Debt Securities, Gross Unrealized Losses, Recognized In O C I	4,868	'
Available-For-Sale Securities, Debt Securities, Net Carrying Amount	1,381,879	1,221,259
Available-for-sale debt securities, Estimated fair value	1,381,879	1,221,259
Available-for-sale Securities, Gross Unrealized Gain	'	21,129
Available-for-sale, Gross unrealized losses, Recognized in OCI	'	2,771
Trust Preferred Securities - Real Estate Investment Trusts [Member] | Asset-Backed Securities [Member]	'	'
Investment [Line Items]	'	'
Available-for-sale Securities, Gross Unrealized Gain	'	0
Available-for-sale equity securities, Amortized cost	'	22,996
Available-for-sale equity securities, Carrying value	'	22,996
Available-for-sale, Gross unrealized losses, Recognized in OCI	'	0
Available-for-sale securities, Estimated fair value	'	22,996
Auction Rate Securities [Member] | Asset-Backed Securities [Member]	'	'
Investment [Line Items]	'	'
Available-for-sale debt securities, Amortized cost	6,508	'
Available-For-Sale Debt Securities, Gross Unrealized Gains, Recognized In O C I	87	'
Available-For-Sale Debt Securities, Gross Unrealized Losses, Recognized In O C I	35	'
Available-For-Sale Securities, Debt Securities, Net Carrying Amount	6,560	'
Available-for-sale debt securities, Estimated fair value	6,560	'
Available-for-sale Securities, Gross Unrealized Gain	'	118
Available-for-sale equity securities, Amortized cost	'	6,507
Available-for-sale equity securities, Carrying value	'	6,599
Available-for-sale, Gross unrealized losses, Recognized in OCI	'	26
Available-for-sale securities, Estimated fair value	'	6,599
Mutual Funds And Other [Member]	'	'
Investment [Line Items]	'	'
Available-for-sale Securities, Gross Unrealized Gain	'	21
Available-for-sale, Amortized cost	'	287,603
Available-for-sale, Gross unrealized losses, Recognized in OCI	'	7,421
Carrying value	'	280,203
Available-for-sale securities, Estimated fair value	'	280,203
Mutual Funds And Stock [Member]	'	'
Investment [Line Items]	'	'
Available-for-sale Securities, Gross Unrealized Gain	180	'
Available-for-sale, Amortized cost	257,643	'
Available-for-sale, Gross unrealized losses, Recognized in OCI	5,761	'
Carrying value	252,062	'
Available-for-sale securities, Estimated fair value	$252,062	'

Investment_Securities_Contract

Investment Securities (Contractual Maturities Debt Securities) (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Investments [Abstract]	'	'
Held-to-maturity, Due in one year or less, Amortized cost	$77,395	'
Held-to-maturity, Due in one year or less, Estimated fair value	56,283	'
Held-to-maturity, Due after one year through five years, Amortized cost	195,088	'
Held-to-maturity, Due after one year through five years, Estimated fair value	161,077	'
Held-to-maturity, Due after five years through ten years, Amortized cost	135,308	'
Held-to-maturity, Due after five years through ten years, Estimated fair value	138,806	'
Held-to-maturity, Due after ten years, Amortized cost	239,595	'
Held-to-maturity, Due after ten years, Estimated fair value	279,213	'
Held-to-maturity, Amortized cost	647,386	630,574
Held-to-maturity, fair value	635,379	609,547
Available-for-sale, Due in one year or less, Amortized cost	510,870	'
Available-for-sale, Due in one year or less, Estimated fair value	497,041	'
Available-for-sale, Due after one year through five years, Amortized cost	1,212,400	'
Available-for-sale, Due after one year through five years, Estimated fair value	1,205,205	'
Available-for-sale, Due after five years through ten years, Amortized cost	709,151	'
Available-for-sale, Due after five years through ten years, Estimated fair value	697,454	'
Available-for-sale, Due after ten years, Amortized cost	891,226	'
Available-for-sale, Due after ten years, Estimated fair value	771,443	'
Available-for-sale, Amortized cost	3,323,647	'
Available-for-sale, Estimated fair value	$3,171,143	$3,421,683

Investment_Securities_Summary_1

Investment Securities (Summary Of Amount Of Gross Unrealized Losses For Debt Securities And Estimated Fair Value) (Details) (USD $)	3 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Investment [Line Items]	'	'
Available-for-sale, Less than 12 months - Gross unrealized losses	$11,613	$7,328
Available-for-sale, Less than 12 months - Estimated fair value	784,565	386,486
Available-for-sale, 12 months or more - Gross unrealized losses	195,116	288,361
Available-for-sale, 12 months or more - Estimated fair value	799,234	1,001,740
Available-for-sale, Total - Gross unrealized losses	206,729	295,689
Available-for-sale, Total - Estimated fair value	1,583,799	1,388,226
Investment Securities Gross Unrealized Losses Less Than 12 Months	13,083	11,353
Investment Securities Estimated Fair Value Less Than 12 Months	827,696	456,886
Investment Securities Gross Unrealized Losses 12 Months or More	237,685	331,853
Investment Securities Estimated Fair Value 12 Months or More	859,506	1,062,162
Investment Securities Gross Unrealized Losses Total	250,768	343,206
Investment Securities Estimated Fair Value Total	1,687,202	1,519,048
Municipal Securities [Member]	'	'
Investment [Line Items]	'	'
Held-to-maturity, Less than 12 months - Gross unrealized losses	1,414	4,025
Held-to-maturity, Less than 12 months - Estimated fair value	43,060	70,400
Held-to-maturity, 12 months or more - Gross unrealized losses	293	591
Held-to-maturity, 12 months or more - Estimated fair value	5,721	9,103
Held-to-maturity, Total - Gross unrealized losses	1,707	4,616
Held-to-maturity, Total - Estimated fair value	48,781	79,503
Available-for-sale, Less than 12 months - Gross unrealized losses	57	73
Available-for-sale, Less than 12 months - Estimated fair value	7,127	8,834
Available-for-sale, 12 months or more - Gross unrealized losses	647	417
Available-for-sale, 12 months or more - Estimated fair value	2,824	3,179
Available-for-sale, Total - Gross unrealized losses	704	490
Available-for-sale, Total - Estimated fair value	9,951	12,013
Agency Securities [Member]	'	'
Investment [Line Items]	'	'
Available-for-sale, Less than 12 months - Gross unrealized losses	5,936	828
Available-for-sale, Less than 12 months - Estimated fair value	326,547	47,862
Available-for-sale, 12 months or more - Gross unrealized losses	61	73
Available-for-sale, 12 months or more - Estimated fair value	5,803	5,874
Available-for-sale, Total - Gross unrealized losses	5,997	901
Available-for-sale, Total - Estimated fair value	332,350	53,736
Agency Guaranteed Mortgage-Backed Securities [Member]	'	'
Investment [Line Items]	'	'
Available-for-sale, Less than 12 months - Gross unrealized losses	792	1,231
Available-for-sale, Less than 12 months - Estimated fair value	48,560	64,533
Available-for-sale, 12 months or more - Gross unrealized losses	52	6
Available-for-sale, 12 months or more - Estimated fair value	3,054	935
Available-for-sale, Total - Gross unrealized losses	844	1,237
Available-for-sale, Total - Estimated fair value	51,614	65,468
Small Business Administration Loan-Backed Securities [Member]	'	'
Investment [Line Items]	'	'
Available-for-sale, Less than 12 months - Gross unrealized losses	3,537	1,709
Available-for-sale, Less than 12 months - Estimated fair value	347,883	187,680
Available-for-sale, 12 months or more - Gross unrealized losses	1,331	1,062
Available-for-sale, 12 months or more - Estimated fair value	37,832	39,256
Available-for-sale, Total - Gross unrealized losses	4,868	2,771
Available-for-sale, Total - Estimated fair value	385,715	226,936
Mutual Funds And Other [Member]	'	'
Investment [Line Items]	'	'
Available-for-sale, Less than 12 months - Gross unrealized losses	0	943
Available-for-sale, Less than 12 months - Estimated fair value	0	24,057
Available-for-sale, 12 months or more - Gross unrealized losses	5,761	6,478
Available-for-sale, 12 months or more - Estimated fair value	124,331	103,614
Available-for-sale, Total - Gross unrealized losses	5,761	7,421
Available-for-sale, Total - Estimated fair value	124,331	127,671
Held-To-Maturity [Member]	'	'
Investment [Line Items]	'	'
Held-to-maturity, Less than 12 months - Gross unrealized losses	1,470	4,025
Held-to-maturity, Less than 12 months - Estimated fair value	43,131	70,400
Held-to-maturity, 12 months or more - Gross unrealized losses	42,569	43,492
Held-to-maturity, 12 months or more - Estimated fair value	60,272	60,422
Held-to-maturity, Total - Gross unrealized losses	44,039	47,517
Held-to-maturity, Total - Estimated fair value	103,403	130,822
Available-for-sale Securities [Member]	'	'
Investment [Line Items]	'	'
Available-for-sale, Less than 12 months - Gross unrealized losses	11,613	6,385
Available-for-sale, Less than 12 months - Estimated fair value	784,565	362,429
Available-for-sale, 12 months or more - Gross unrealized losses	189,355	281,883
Available-for-sale, 12 months or more - Estimated fair value	674,903	898,126
Available-for-sale, Total - Gross unrealized losses	200,968	288,268
Available-for-sale, Total - Estimated fair value	1,459,468	1,260,555
Asset-Backed Securities [Member] | Trust Preferred Securities - Banks And Insurance [Member]	'	'
Investment [Line Items]	'	'
Held-to-maturity, Less than 12 months - Gross unrealized losses	56	0
Held-to-maturity, Less than 12 months - Estimated fair value	71	0
Held-to-maturity, 12 months or more - Gross unrealized losses	42,276	42,901
Held-to-maturity, 12 months or more - Estimated fair value	54,551	51,319
Held-to-maturity, Total - Gross unrealized losses	42,332	42,901
Held-to-maturity, Total - Estimated fair value	54,622	51,319
Available-for-sale, Less than 12 months - Gross unrealized losses	1,280	2,539
Available-for-sale, Less than 12 months - Estimated fair value	52,845	51,911
Available-for-sale, 12 months or more - Gross unrealized losses	187,240	280,304
Available-for-sale, 12 months or more - Estimated fair value	624,501	847,990
Available-for-sale, Total - Gross unrealized losses	188,520	282,843
Available-for-sale, Total - Estimated fair value	677,346	899,901
Asset-Backed Securities [Member] | Auction Rate Securities [Member]	'	'
Investment [Line Items]	'	'
Available-for-sale, Less than 12 months - Gross unrealized losses	11	5
Available-for-sale, Less than 12 months - Estimated fair value	1,603	1,609
Available-for-sale, 12 months or more - Gross unrealized losses	24	21
Available-for-sale, 12 months or more - Estimated fair value	889	892
Available-for-sale, Total - Gross unrealized losses	35	26
Available-for-sale, Total - Estimated fair value	$2,492	$2,501

Investment_Securities_Rollforw

Investment Securities (Rollforward Of Total Amount Of Credit-Related OTTI) (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Investment [Line Items]	'	'
Balance of credit-related OTTI at beginning of period	($185,885,000)	$408,043,000
Credit-related OTTI not previously recognized	0	403,000
Credit-related OTTI previously recognized when there is no intent to sell and no requirement to sell before recovery of amortized cost basis	-27,000	9,714,000
Subtotal of amounts recognized in earnings	-27,000	10,117,000
Reductions for securities sold during the period	12,919,000	0
Balance of credit-related OTTI at end of period	-172,993,000	418,160,000
Held-To-Maturity [Member]	'	'
Investment [Line Items]	'	'
Balance of credit-related OTTI at beginning of period	-9,052,000	13,549,000
Credit-related OTTI not previously recognized	0	403,000
Credit-related OTTI previously recognized when there is no intent to sell and no requirement to sell before recovery of amortized cost basis	-27,000	0
Subtotal of amounts recognized in earnings	-27,000	403,000
Reductions for securities sold during the period	0	0
Balance of credit-related OTTI at end of period	-9,079,000	13,952,000
Available-for-sale Securities [Member]	'	'
Investment [Line Items]	'	'
Balance of credit-related OTTI at beginning of period	-176,833,000	394,494,000
Credit-related OTTI not previously recognized	0	0
Credit-related OTTI previously recognized when there is no intent to sell and no requirement to sell before recovery of amortized cost basis	0	9,714,000
Subtotal of amounts recognized in earnings	0	9,714,000
Reductions for securities sold during the period	12,919,000	0
Balance of credit-related OTTI at end of period	($163,914,000)	$404,208,000

Investment_Securities_Noncredi

Investment Securities Noncredit Related Other Than Temporary Impairment (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Noncredit Related Losses On Securities Not Expected To Be Sold [Line Items]	'	'
Noncredit-related losses on securities not expected to be sold (recognized in other comprehensive income)	$0	$21,376
Held-to-maturity Securities [Member]	'	'
Noncredit Related Losses On Securities Not Expected To Be Sold [Line Items]	'	'
Noncredit-related losses on securities not expected to be sold (recognized in other comprehensive income)	0	16,114
Available-for-sale Securities [Member]	'	'
Noncredit Related Losses On Securities Not Expected To Be Sold [Line Items]	'	'
Noncredit-related losses on securities not expected to be sold (recognized in other comprehensive income)	$0	$5,262

Investment_Securities_Gains_An

Investment Securities (Gains And Losses, Including OTTI, Recognized In Statement Of Income) (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Investments [Abstract]	'	'
Investment securities, Held-to-maturity, Gross gains	$0	$24
Other than Temporary Impairment Losses, Investments, Held-to-maturity Securities	27	403
Investment securities, Available-for-sale, Gross gains	72,561	3,276
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net, Available-for-sale Securities	41,647	9,715
Other noninterest-bearing investments, Nonmarketable equity securities, Gross gains	912	2,857
Other noninterest-bearing investments, Nonmarketable equity securities, Gross losses	0	25
Total investment securities and other noninterest-bearing investments, Gross gains	73,473	6,157
Total investment securities and other noninterest-bearing investments, Gross losses	41,674	10,143
Net losses	31,799	-3,986
Net impairment losses on investment securities	-27	-10,117
Equity securities gains (losses)	912	2,832
Fixed income securities gains (losses), net	$30,914	$3,299

Investment_Securities_Taxable_

Investment Securities Taxable and Nontaxable Interest Income by Investment Type (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Noninterest Income	$28,094	$25,876
Taxable [Member]	'	'
Noninterest Income	24,734	22,436
Nontaxable [Member]	'	'
Noninterest Income	3,360	3,440
Held-To-Maturity [Member]	'	'
Noninterest Income	6,664	7,974
Held-To-Maturity [Member] | Taxable [Member]	'	'
Noninterest Income	3,828	5,073
Held-To-Maturity [Member] | Nontaxable [Member]	'	'
Noninterest Income	2,836	2,901
Available-for-sale Securities [Member]	'	'
Noninterest Income	20,948	17,712
Available-for-sale Securities [Member] | Taxable [Member]	'	'
Noninterest Income	20,424	17,173
Available-for-sale Securities [Member] | Nontaxable [Member]	'	'
Noninterest Income	524	539
Trading Securities [Member]	'	'
Noninterest Income	482	190
Trading Securities [Member] | Taxable [Member]	'	'
Noninterest Income	482	190
Trading Securities [Member] | Nontaxable [Member]	'	'
Noninterest Income	$0	$0

Loans_And_Allowance_For_Credit2

Loans And Allowance For Credit Losses (Narrative) (Details) (USD $)	3 Months Ended		12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
	Payments
	Billing_Cycles
	D
	M
Loans And Allowance For Credit Losses [Line Items]	'	'	'	'	'
Threshold for Internal risk grades assigned to commercial and commercial real estate loans	$750,000	'	$750,000	'	'
Unused Commitments to Extend Credit	3,800,000	'	3,800,000	'	5,600,000
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Provision for Loan Losses	-2,700,000	-9,600,000	'	'	'
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	327,000	1,316,000	142,400,000	181,500,000	'
Unearned income and fees, net of related costs	144,500,000	'	144,500,000	'	141,700,000
Owner occupied and commercial real estate loans, unamortized premiums	44,100,000	'	44,100,000	'	47,200,000
Land Development Loans	589,100,000	'	589,100,000	'	561,300,000
Loans at carrying value pledged as collateral for current and potential borrowings	23,500,000,000	'	23,500,000,000	'	23,000,000,000
Payments for Origination and Purchases of Loans Held-for-sale	295,500,000	358,900,000	'	'	'
Loans and Leases Receivable, Gain (Loss) on Sales, Net	3,500,000	8,500,000	'	'	'
Principle amount of loans held for sale sold	337,600,000	447,600,000	'	'	'
Number of days for consumer loans to be charged off	180	'	'	'	'
Number of days for closed-end loans to be charged off	120	'	'	'	'
Minimum number of days past due for nonaccrual status	90	'	'	'	'
Minimum number of monthly payments in arrears when reporting past due	2	'	'	'	'
Minimum number of billing cycles in arrears when reported as past due	2	'	'	'	'
Minimum number of days unpaid when reported as past due	30	'	'	'	'
Threshold for nonaccrual loans for evaluation of impairment	1,000,000	'	'	'	'
Minimum number of months for borrower to meet terms For TDR status	6	'	'	'	'
Recorded investment in TDR loans modified with interest rates below market	186,200,000	'	186,200,000	'	172,600,000
Charge-offs (recoveries), net before FDIC indemnification	-1,200,000	-900,000	'	'	'
Total reversal amount to ALLL	2,900,000	9,700,000	'	'	'
Additional interest income due to increased cash flows from acquired loans	18,500,000	20,300,000	'	'	'
Additional noninterest expense due to increased cash flows from acquired loans	16,000,000	19,000,000	'	'	'
Loss sharing reimbursement, minimum	80.00%	'	80.00%	'	'
Loss sharing reimbursement, maximum	95.00%	'	95.00%	'	'
FDIC Indemnification Asset	$13,200,000	'	$13,200,000	'	$26,400,000
Commercial [Member]	'	'	'	'	'
Loans And Allowance For Credit Losses [Line Items]	'	'	'	'	'
Subsequent payment default period, number of days	90	'	'	'	'
Consumer Portfolio Segment [Member]	'	'	'	'	'
Loans And Allowance For Credit Losses [Line Items]	'	'	'	'	'
Subsequent payment default period, number of days	60	'	'	'	'

Loans_And_Allowance_For_Credit3

Loans And Allowance For Credit Losses (Summary Of Major Portfolio Segment And Specific Loan Class) (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Loans And Allowance For Credit Losses [Abstract]	'	'
Loans held for sale	$126,344	$171,328
Commercial and industrial	12,511,630	12,481,083
Leasing	389,576	387,929
Owner occupied	7,347,813	7,437,195
Municipal	482,074	449,418
Total commercial	20,731,093	20,755,625
Construction and land development	2,263,920	2,182,821
Term	8,080,348	8,005,837
Total commercial real estate	10,344,268	10,188,658
Home equity credit line	2,165,285	2,133,120
1-4 family residential	4,795,484	4,736,665
Construction and other consumer real estate	330,215	324,922
Bankcard and other revolving plans	360,389	356,240
Other	186,089	197,864
Total consumer	7,837,462	7,748,811
FDIC-supported loans	285,313	350,271
Total loans	$39,198,136	$39,043,365

Loans_And_Allowance_For_Credit4

Loans And Allowance For Credit Losses (Summary Of Changes In The Allowance For Credit Losses) (Details) (USD $)	3 Months Ended
	Mar. 31, 2014		Mar. 31, 2013		Dec. 31, 2013		Dec. 31, 2012
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'		'		'
Allowance for Loan and Lease Losses, Provision for Loss, Gross	($610,000)		($29,035,000)		'		'
Change In Allowance Covered By F D I C Indemnification	-817,000		-7,429,000		'		'
Allowance for Loan and Lease Losses, Write-offs	-20,795,000		-35,467,000		'		'
Allowance for Credit Losses [Roll Forward]	'		'		'		'
Balance at beginning of period	746,291,000		896,087,000		'		'
Net loan and lease charge-offs	-7,911,000		-17,842,000		'		'
Balance at end of period	88,693,000		100,455,000		89,705,000		106,809,000
Allowance for loan losses	736,953,000		841,781,000		'		'
Reserve for unfunded lending commitments	88,693,000		100,455,000		89,705,000		106,809,000
Total allowance for credit losses	825,646,000		942,236,000		'		'
Allowance for Loan and Lease Losses, Recoveries of Bad Debts	12,884,000		17,625,000		'		'
Provision for Unfunded Lending Commitments	-1,012,000		-6,354,000		'		'
Balance at end of period	736,953,000		841,781,000		'		'
Commercial [Member]	'		'		'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'		'		'
Allowance for Loan and Lease Losses, Provision for Loss, Gross	11,682,000		-3,229,000		'		'
Change In Allowance Covered By F D I C Indemnification	0		0		'		'
Allowance for Loan and Lease Losses, Write-offs	-9,124,000		-18,100,000		'		'
Allowance for Credit Losses [Roll Forward]	'		'		'		'
Balance at beginning of period	465,145,000		510,908,000		'		'
Net loan and lease charge-offs	-2,279,000		-10,749,000		'		'
Balance at end of period	49,870,000		65,632,000		48,345,000		67,374,000
Allowance for loan losses	474,548,000		496,930,000		'		'
Reserve for unfunded lending commitments	49,870,000		65,632,000		48,345,000		67,374,000
Total allowance for credit losses	524,418,000		562,562,000		'		'
Allowance for Loan and Lease Losses, Recoveries of Bad Debts	6,845,000		7,351,000		'		'
Provision for Unfunded Lending Commitments	1,525,000		-1,742,000		'		'
Balance at end of period	474,548,000		496,930,000		'		'
Commercial Real Estate [Member]	'		'		'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'		'		'
Allowance for Loan and Lease Losses, Provision for Loss, Gross	-1,567,000		-18,628,000		'		'
Change In Allowance Covered By F D I C Indemnification	0		0		'		'
Allowance for Loan and Lease Losses, Write-offs	-7,854,000		-7,224,000		'		'
Allowance for Credit Losses [Roll Forward]	'		'		'		'
Balance at beginning of period	213,363,000		276,976,000		'		'
Net loan and lease charge-offs	-5,250,000		-1,927,000		'		'
Balance at end of period	35,273,000		33,240,000		37,485,000		37,852,000
Allowance for loan losses	206,546,000		256,421,000		'		'
Reserve for unfunded lending commitments	35,273,000		33,240,000		37,485,000		37,852,000
Total allowance for credit losses	241,819,000		289,661,000		'		'
Allowance for Loan and Lease Losses, Recoveries of Bad Debts	2,604,000		5,297,000		'		'
Provision for Unfunded Lending Commitments	-2,212,000		-4,612,000		'		'
Balance at end of period	206,546,000		256,421,000		'		'
Consumer Portfolio Segment [Member]	'		'		'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'		'		'
Allowance for Loan and Lease Losses, Provision for Loss, Gross	-8,868,000		-5,020,000		'		'
Change In Allowance Covered By F D I C Indemnification	0		0		'		'
Allowance for Loan and Lease Losses, Write-offs	-3,114,000		-9,937,000		'		'
Allowance for Credit Losses [Roll Forward]	'		'		'		'
Balance at beginning of period	60,865,000		95,656,000		'		'
Net loan and lease charge-offs	-917,000		-6,014,000		'		'
Balance at end of period	3,550,000		1,583,000		3,875,000		1,583,000
Allowance for loan losses	51,080,000		84,622,000		'		'
Reserve for unfunded lending commitments	3,550,000		1,583,000		3,875,000		1,583,000
Total allowance for credit losses	54,630,000		86,205,000		'		'
Allowance for Loan and Lease Losses, Recoveries of Bad Debts	2,197,000		3,923,000		'		'
Provision for Unfunded Lending Commitments	-325,000		0		'		'
Balance at end of period	51,080,000		84,622,000		'		'
Federal Deposit Insurance Corporation Supported [Member]	'		'		'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'		'		'
Allowance for Loan and Lease Losses, Provision for Loss, Gross	-1,857,000	[1]	-2,158,000	[1]	'		'
Change In Allowance Covered By F D I C Indemnification	-817,000	[1]	-7,429,000	[1]	'		'
Allowance for Loan and Lease Losses, Write-offs	-703,000	[1]	-206,000	[1]	'		'
Allowance for Credit Losses [Roll Forward]	'		'		'		'
Balance at beginning of period	6,918,000	[1]	12,547,000	[1]	'		'
Net loan and lease charge-offs	535,000	[1]	848,000	[1]	'		'
Balance at end of period	0	[1]	0	[1]	0	[1]	0	[1]
Allowance for loan losses	4,779,000	[1]	3,808,000	[1]	'		'
Reserve for unfunded lending commitments	0	[1]	0	[1]	0	[1]	0	[1]
Total allowance for credit losses	4,779,000	[1]	3,808,000	[1]	'		'
Allowance for Loan and Lease Losses, Recoveries of Bad Debts	1,238,000	[1]	1,054,000	[1]	'		'
Provision for Unfunded Lending Commitments	0	[1]	0	[1]	'		'
Balance at end of period	$4,779,000	[1]	$3,808,000	[1]	'		'
[1]	The Purchased Loans section following contains further discussion related to FDIC-supported loans.

Loans_And_Allowance_For_Credit5

Loans And Allowance For Credit Losses (Summary Of ALLL And Outstanding Loan Balances According To The Company's Impairment Method) (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014		Mar. 31, 2013		Dec. 31, 2013		Dec. 31, 2012
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'		'		'
Impaired Financing Receivable, Average Recorded Investment	$907,227		$1,363,323		'		'
Impaired Financing Receivable, Interest Income, Accrual Method	26,545		29,802		'		'
Allowance for loan losses: Individually evaluated for impairment	-59,285		'		-62,499		'
Allowance for loan losses: Collectively evaluated for impairment	673,417		'		677,266		'
Allowance for loan losses: Purchased loans with evidence of credit deterioration	4,251		'		6,526		'
Allowance for loan losses: Total	736,953		841,781		746,291		896,087
Outstanding loan balances: Individually evaluated for impairment	671,671		'		681,280		'
Outstanding loan balances: Collectively evaluated for impairment	38,277,498		'		38,051,001		'
Outstanding loan balances: Purchased loans with evidence of credit deterioration	248,967		'		311,084		'
Total loans	39,198,136		'		39,043,365		'
Commercial And Industrial [Member]	'		'		'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'		'		'
Impaired Financing Receivable, Average Recorded Investment	175,155		177,745		'		'
Impaired Financing Receivable, Interest Income, Accrual Method	1,024		856		'		'
Total loans	12,511,630		'		12,481,083		'
Owner Occupied [Member]	'		'		'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'		'		'
Impaired Financing Receivable, Average Recorded Investment	137,175		182,825		'		'
Impaired Financing Receivable, Interest Income, Accrual Method	752		806		'		'
Total loans	7,347,813		'		7,437,195		'
Commercial [Member]	'		'		'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'		'		'
Allowance for loan losses: Individually evaluated for impairment	-41,739		'		-39,288		'
Allowance for loan losses: Collectively evaluated for impairment	432,809		'		425,857		'
Allowance for loan losses: Purchased loans with evidence of credit deterioration	0		'		0		'
Allowance for loan losses: Total	474,548		496,930		465,145		510,908
Outstanding loan balances: Individually evaluated for impairment	329,389		'		315,604		'
Outstanding loan balances: Collectively evaluated for impairment	20,401,704		'		20,440,021		'
Outstanding loan balances: Purchased loans with evidence of credit deterioration	0		'		0		'
Total loans	20,731,093		'		20,755,625		'
Commercial Real Estate [Member]	'		'		'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'		'		'
Allowance for loan losses: Individually evaluated for impairment	-7,409		'		-12,510		'
Allowance for loan losses: Collectively evaluated for impairment	199,137		'		200,853		'
Allowance for loan losses: Purchased loans with evidence of credit deterioration	0		'		0		'
Allowance for loan losses: Total	206,546		256,421		213,363		276,976
Outstanding loan balances: Individually evaluated for impairment	240,384		'		262,907		'
Outstanding loan balances: Collectively evaluated for impairment	10,103,884		'		9,925,751		'
Outstanding loan balances: Purchased loans with evidence of credit deterioration	0		'		0		'
Total loans	10,344,268		'		10,188,658		'
Consumer Portfolio Segment [Member]	'		'		'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'		'		'
Allowance for loan losses: Individually evaluated for impairment	-10,137		'		-10,701		'
Allowance for loan losses: Collectively evaluated for impairment	40,943		'		50,164		'
Allowance for loan losses: Purchased loans with evidence of credit deterioration	0		'		0		'
Allowance for loan losses: Total	51,080		84,622		60,865		95,656
Outstanding loan balances: Individually evaluated for impairment	100,680		'		101,545		'
Outstanding loan balances: Collectively evaluated for impairment	7,736,782		'		7,647,266		'
Outstanding loan balances: Purchased loans with evidence of credit deterioration	0		'		0		'
Total loans	7,837,462		'		7,748,811		'
FDIC- Supported [Member]	'		'		'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'		'		'
Allowance for loan losses: Individually evaluated for impairment	0		'		0		'
Allowance for loan losses: Collectively evaluated for impairment	528		'		392		'
Allowance for loan losses: Purchased loans with evidence of credit deterioration	4,251		'		6,526		'
Allowance for loan losses: Total	4,779	[1]	3,808	[1]	6,918	[1]	12,547	[1]
Outstanding loan balances: Individually evaluated for impairment	1,218		'		1,224		'
Outstanding loan balances: Collectively evaluated for impairment	35,128		'		37,963		'
Outstanding loan balances: Purchased loans with evidence of credit deterioration	248,967		'		311,084		'
Total loans	285,313		'		350,271		'
Municipal [Member]	'		'		'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'		'		'
Total loans	482,074		'		449,418		'
Commercial Loan [Member]	'		'		'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'		'		'
Impaired Financing Receivable, Average Recorded Investment	312,330		360,570		'		'
Impaired Financing Receivable, Interest Income, Accrual Method	1,776		1,662		'		'
Total loans	20,731,093		'		20,755,625		'
Commercial Real Estate Construction Financing Receivable [Member]	'		'		'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'		'		'
Impaired Financing Receivable, Average Recorded Investment	62,548		147,225		'		'
Impaired Financing Receivable, Interest Income, Accrual Method	552		664		'		'
Total loans	2,263,920		'		2,182,821		'
Term [Member]	'		'		'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'		'		'
Impaired Financing Receivable, Average Recorded Investment	149,425		289,103		'		'
Impaired Financing Receivable, Interest Income, Accrual Method	1,294		1,836		'		'
Total loans	8,080,348		'		8,005,837		'
Commercial Real Estate [Member]	'		'		'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'		'		'
Impaired Financing Receivable, Average Recorded Investment	211,973		436,328		'		'
Impaired Financing Receivable, Interest Income, Accrual Method	1,846		2,500		'		'
Total loans	10,344,268		'		10,188,658		'
Home Equity Line of Credit [Member]	'		'		'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'		'		'
Impaired Financing Receivable, Average Recorded Investment	14,952		11,455		'		'
Impaired Financing Receivable, Interest Income, Accrual Method	135		59		'		'
Total loans	2,165,285		'		2,133,120		'
One Through Four Family Residential [Member]	'		'		'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'		'		'
Impaired Financing Receivable, Average Recorded Investment	80,154		99,191		'		'
Impaired Financing Receivable, Interest Income, Accrual Method	448		382		'		'
Total loans	4,795,484		'		4,736,665		'
Construction And Other Consumer Real Estate [Member]	'		'		'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'		'		'
Impaired Financing Receivable, Average Recorded Investment	3,332		6,122		'		'
Impaired Financing Receivable, Interest Income, Accrual Method	35		46		'		'
Total loans	330,215		'		324,922		'
Revolving Credit Facility [Member]	'		'		'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'		'		'
Total loans	360,389		'		356,240		'
Consumer Other Financing Receivable [Member]	'		'		'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'		'		'
Impaired Financing Receivable, Average Recorded Investment	704		1,816		'		'
Impaired Financing Receivable, Interest Income, Accrual Method	0		0		'		'
Total loans	186,089		'		197,864		'
Consumer Loan [Member]	'		'		'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'		'		'
Impaired Financing Receivable, Average Recorded Investment	99,142		118,584		'		'
Impaired Financing Receivable, Interest Income, Accrual Method	618		487		'		'
Total loans	7,837,462		'		7,748,811		'
Fdic Supported Loans [Member]	'		'		'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'		'		'
Impaired Financing Receivable, Average Recorded Investment	283,782		447,841		'		'
Impaired Financing Receivable, Interest Income, Accrual Method	22,305	[2]	25,153	[2]	'		'
Total loans	$285,313		'		$350,271		'
[1]	The Purchased Loans section following contains further discussion related to FDIC-supported loans.
[2]	The balance of interest income recognized results primarily from accretion of interest income on impaired FDIC-supported loans.

Loans_And_Allowance_For_Credit6

Loans And Allowance For Credit Losses (Summary Of Nonaccrual Loans) (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Total	$401,666	$406,613
Commercial And Industrial [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Total	108,618	97,960
Leasing [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Total	684	757
Owner Occupied [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Total	127,140	136,281
Municipal [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Total	9,947	9,986
Commercial Loan [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Total	246,389	244,984
Commercial Real Estate Construction Financing Receivable [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Total	29,061	29,205
Term [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Total	59,202	60,380
Commercial Real Estate [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Total	88,263	89,585
Home Equity Line of Credit [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Total	9,624	8,969
One Through Four Family Residential [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Total	48,023	53,002
Construction And Other Consumer Real Estate [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Total	3,424	3,510
Revolving Credit Facility [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Total	882	1,365
Consumer Other Financing Receivable [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Total	944	804
Consumer Loan [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Total	62,897	67,650
Fdic Supported Loans [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Total	$4,117	$4,394

Loans_And_Allowance_For_Credit7

Loans And Allowance For Credit Losses (Summary Of Past Due Loans (Accruing And Nonaccruing)) (Details) (USD $)	Mar. 31, 2014		Dec. 31, 2013
In Thousands, unless otherwise specified
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'
Current	$38,833,278		$38,711,947
30-89 days past due	162,626		145,849
90+ days past due	202,232		185,569
Total past due	364,858		331,418
Total loans	39,198,136		39,043,365
Accruing loans 90+ days past due	38,191		40,348
Nonaccrual loans that are current	189,404	[1]	232,055	[1]
Commercial [Member]	'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'
Total loans	20,731,093		20,755,625
Commercial Loan [Member]	'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'
Current	20,529,162		20,573,298
30-89 days past due	98,083		89,009
90+ days past due	103,848		93,318
Total past due	201,931		182,327
Total loans	20,731,093		20,755,625
Accruing loans 90+ days past due	956		2,635
Nonaccrual loans that are current	118,208	[1]	136,223	[1]
Commercial Real Estate [Member]	'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'
Total loans	10,344,268		10,188,658
Consumer Portfolio Segment [Member]	'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'
Total loans	7,837,462		7,748,811
Consumer Loan [Member]	'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'
Current	7,786,089		7,699,595
30-89 days past due	23,038		20,485
90+ days past due	28,335		28,731
Total past due	51,373		49,216
Total loans	7,837,462		7,748,811
Accruing loans 90+ days past due	1,713		1,719
Nonaccrual loans that are current	31,000	[1]	33,922	[1]
Commercial And Industrial [Member]	'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'
Current	12,403,866		12,387,546
30-89 days past due	53,684		48,811
90+ days past due	54,080		44,726
Total past due	107,764		93,537
Total loans	12,511,630		12,481,083
Accruing loans 90+ days past due	826		1,855
Nonaccrual loans that are current	45,137	[1]	52,412	[1]
Leasing [Member]	'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'
Current	389,201		387,526
30-89 days past due	181		173
90+ days past due	194		230
Total past due	375		403
Total loans	389,576		387,929
Accruing loans 90+ days past due	0		36
Nonaccrual loans that are current	490	[1]	563	[1]
Owner Occupied [Member]	'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'
Current	7,262,832		7,357,618
30-89 days past due	44,218		36,718
90+ days past due	40,763		42,859
Total past due	84,981		79,577
Total loans	7,347,813		7,437,195
Accruing loans 90+ days past due	130		744
Nonaccrual loans that are current	71,445	[1]	82,072	[1]
Municipal [Member]	'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'
Current	473,263		440,608
30-89 days past due	0		3,307
90+ days past due	8,811		5,503
Total past due	8,811		8,810
Total loans	482,074		449,418
Accruing loans 90+ days past due	0		0
Nonaccrual loans that are current	1,136	[1]	1,176	[1]
Commercial Real Estate Construction Financing Receivable [Member]	'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'
Current	2,246,891		2,162,018
30-89 days past due	5,518		8,967
90+ days past due	11,511		11,836
Total past due	17,029		20,803
Total loans	2,263,920		2,182,821
Accruing loans 90+ days past due	0		23
Nonaccrual loans that are current	16,934	[1]	17,311	[1]
Term [Member]	'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'
Current	8,023,737		7,971,327
30-89 days past due	31,597		15,362
90+ days past due	25,014		19,148
Total past due	56,611		34,510
Total loans	8,080,348		8,005,837
Accruing loans 90+ days past due	3,992		5,580
Nonaccrual loans that are current	21,690	[1]	42,624	[1]
Commercial Real Estate [Member]	'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'
Current	10,270,628		10,133,345
30-89 days past due	37,115		24,329
90+ days past due	36,525		30,984
Total past due	73,640		55,313
Total loans	10,344,268		10,188,658
Accruing loans 90+ days past due	3,992		5,603
Nonaccrual loans that are current	38,624	[1]	59,935	[1]
Home Equity Line of Credit [Member]	'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'
Current	2,151,938		2,122,549
30-89 days past due	6,305		8,001
90+ days past due	7,042		2,570
Total past due	13,347		10,571
Total loans	2,165,285		2,133,120
Accruing loans 90+ days past due	0		98
Nonaccrual loans that are current	2,145	[1]	2,868	[1]
One Through Four Family Residential [Member]	'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'
Current	4,765,571		4,704,852
30-89 days past due	11,351		8,526
90+ days past due	18,562		23,287
Total past due	29,913		31,813
Total loans	4,795,484		4,736,665
Accruing loans 90+ days past due	702		667
Nonaccrual loans that are current	25,889	[1]	27,592	[1]
Construction And Other Consumer Real Estate [Member]	'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'
Current	326,297		322,807
30-89 days past due	3,035		1,038
90+ days past due	883		1,077
Total past due	3,918		2,115
Total loans	330,215		324,922
Accruing loans 90+ days past due	0		0
Nonaccrual loans that are current	2,100	[1]	2,232	[1]
Revolving Credit Facility [Member]	'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'
Current	357,596		353,060
30-89 days past due	1,722		2,093
90+ days past due	1,071		1,087
Total past due	2,793		3,180
Total loans	360,389		356,240
Accruing loans 90+ days past due	1,008		900
Nonaccrual loans that are current	739	[1]	1,105	[1]
Consumer Other Financing Receivable [Member]	'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'
Current	184,687		196,327
30-89 days past due	625		827
90+ days past due	777		710
Total past due	1,402		1,537
Total loans	186,089		197,864
Accruing loans 90+ days past due	3		54
Nonaccrual loans that are current	127	[1]	125	[1]
Fdic Supported Loans [Member]	'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'
Current	247,399		305,709
30-89 days past due	4,390		12,026
90+ days past due	33,524		32,536
Total past due	37,914		44,562
Total loans	285,313		350,271
Accruing loans 90+ days past due	31,530		30,391
Nonaccrual loans that are current	$1,572	[1]	$1,975	[1]
[1]	Represents nonaccrual loans that are not past due more than 30 days; however, full payment of principal and interest is still not expected.

Loans_And_Allowance_For_Credit8

Loans And Allowance For Credit Losses (Summary Of Outstanding Loan Balances (Accruing And Nonaccruing) Categorized By Credit Quality Indicators) (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Loans held for sale	$126,344	$171,328
Commercial and industrial	12,511,630	12,481,083
Leasing	389,576	387,929
Owner occupied	7,347,813	7,437,195
Municipal	482,074	449,418
Total commercial	20,731,093	20,755,625
Construction and land development	2,263,920	2,182,821
Term	8,080,348	8,005,837
Total commercial real estate	10,344,268	10,188,658
Home equity credit line	2,165,285	2,133,120
1-4 family residential	4,795,484	4,736,665
Construction and other consumer real estate	330,215	324,922
Bankcard and other revolving plans	360,389	356,240
Other	186,089	197,864
Total consumer	7,837,462	7,748,811
Total loans	39,198,136	39,043,365
Pass [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Total loans	37,127,016	37,009,767
Special Mention [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Total loans	691,619	700,374
Sub-Standard [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Total loans	1,365,606	1,323,955
Doubtful [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Total loans	13,895	9,269
Total Allowance [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Total loans	736,953	746,291
Commercial [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Commercial and industrial	12,511,630	12,481,083
Leasing	389,576	387,929
Owner occupied	7,347,813	7,437,195
Municipal	482,074	449,418
Total commercial	20,731,093	20,755,625
Total loans	20,731,093	20,755,625
Commercial [Member] | Pass [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Commercial and industrial	11,722,928	11,807,825
Leasing	383,454	380,268
Owner occupied	6,762,002	6,827,464
Municipal	472,127	439,432
Total commercial	19,340,511	19,454,989
Commercial [Member] | Special Mention [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Commercial and industrial	340,409	303,598
Leasing	992	2,050
Owner occupied	167,655	184,328
Municipal	0	0
Total commercial	509,056	489,976
Commercial [Member] | Sub-Standard [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Commercial and industrial	436,572	360,391
Leasing	5,130	5,611
Owner occupied	417,828	425,403
Municipal	9,947	9,986
Total commercial	869,477	801,391
Commercial [Member] | Doubtful [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Commercial and industrial	11,721	9,269
Leasing	0	0
Owner occupied	328	0
Municipal	0	0
Total commercial	12,049	9,269
Commercial [Member] | Total Allowance [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Total commercial	474,548	465,145
Commercial Real Estate Construction Financing Receivable [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Construction and land development	2,263,920	2,182,821
Total loans	2,263,920	2,182,821
Commercial Real Estate Construction Financing Receivable [Member] | Pass [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Construction and land development	2,192,237	2,107,828
Commercial Real Estate Construction Financing Receivable [Member] | Special Mention [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Construction and land development	14,181	15,010
Commercial Real Estate Construction Financing Receivable [Member] | Sub-Standard [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Construction and land development	57,502	59,983
Commercial Real Estate Construction Financing Receivable [Member] | Doubtful [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Construction and land development	0	0
Commercial Real Estate [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Term	8,080,348	8,005,837
Total commercial real estate	10,344,268	10,188,658
Total loans	10,344,268	10,188,658
Commercial Real Estate [Member] | Pass [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Term	7,675,747	7,569,472
Total commercial real estate	9,867,984	9,677,300
Commercial Real Estate [Member] | Special Mention [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Term	149,016	172,856
Total commercial real estate	163,197	187,866
Commercial Real Estate [Member] | Sub-Standard [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Term	253,739	263,509
Total commercial real estate	311,241	323,492
Commercial Real Estate [Member] | Doubtful [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Term	1,846	0
Total commercial real estate	1,846	0
Commercial Real Estate [Member] | Total Allowance [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Total commercial real estate	206,546	213,363
Consumer Portfolio Segment [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Home equity credit line	2,165,285	2,133,120
1-4 family residential	4,795,484	4,736,665
Construction and other consumer real estate	330,215	324,922
Bankcard and other revolving plans	360,389	356,240
Other	186,089	197,864
Total consumer	7,837,462	7,748,811
Total loans	7,837,462	7,748,811
Consumer Portfolio Segment [Member] | Pass [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Home equity credit line	2,140,762	2,111,475
1-4 family residential	4,732,423	4,668,841
Construction and other consumer real estate	321,328	313,881
Bankcard and other revolving plans	358,045	353,618
Other	184,863	196,770
Total consumer	7,737,421	7,644,585
Consumer Portfolio Segment [Member] | Special Mention [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Home equity credit line	0	0
1-4 family residential	0	0
Construction and other consumer real estate	0	0
Bankcard and other revolving plans	0	0
Other	0	0
Total consumer	0	0
Consumer Portfolio Segment [Member] | Sub-Standard [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Home equity credit line	24,523	21,645
1-4 family residential	63,061	67,824
Construction and other consumer real estate	8,887	11,041
Bankcard and other revolving plans	2,344	2,622
Other	1,226	1,094
Total consumer	100,041	104,226
Consumer Portfolio Segment [Member] | Doubtful [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Home equity credit line	0	0
1-4 family residential	0	0
Construction and other consumer real estate	0	0
Bankcard and other revolving plans	0	0
Other	0	0
Total consumer	0	0
Consumer Portfolio Segment [Member] | Total Allowance [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Total consumer	51,080	60,865
FDIC-Supported Loans [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
FDIC-supported loans	285,313	350,271
FDIC-Supported Loans [Member] | Pass [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
FDIC-supported loans	181,100	232,893
FDIC-Supported Loans [Member] | Special Mention [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
FDIC-supported loans	19,366	22,532
FDIC-Supported Loans [Member] | Sub-Standard [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
FDIC-supported loans	84,847	94,846
FDIC-Supported Loans [Member] | Doubtful [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
FDIC-supported loans	0	0
FDIC-Supported Loans [Member] | Total Allowance [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
FDIC-supported loans	$4,779	$6,918

Loans_And_Allowance_For_Credit9

Loans And Allowance For Credit Losses (Summary Of Information On Impaired Loans) (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014		Mar. 31, 2013		Dec. 31, 2013
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'		'
Loans and Leases Receivable, Gross, Consumer, Home Equity	$2,165,285		'		$2,133,120
Unpaid principal balance	1,033,523		'		1,109,953
Recorded investment	848,082		'		924,553
Impaired Financing Receivable, Related Allowance	60,592		'		66,206
Average recorded investment	907,227		1,363,323		'
Interest income recognized	26,545		29,802		'
Commercial And Industrial [Member]	'		'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'		'
Unpaid principal balance	201,765		'		178,281
Recorded investment	177,143		'		156,784
Impaired Financing Receivable, Related Allowance	31,319		'		23,687
Average recorded investment	175,155		177,745		'
Interest income recognized	1,024		856		'
Owner Occupied [Member]	'		'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'		'
Unpaid principal balance	146,504		'		151,499
Recorded investment	130,716		'		138,945
Impaired Financing Receivable, Related Allowance	8,487		'		13,900
Average recorded investment	137,175		182,825		'
Interest income recognized	752		806		'
Commercial Loan [Member]	'		'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'		'
Unpaid principal balance	348,269		'		329,780
Recorded investment	307,859		'		295,729
Impaired Financing Receivable, Related Allowance	39,806		'		37,587
Average recorded investment	312,330		360,570		'
Interest income recognized	1,776		1,662		'
Commercial Real Estate Construction Financing Receivable [Member]	'		'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'		'
Unpaid principal balance	70,088		'		85,440
Recorded investment	59,140		'		69,950
Impaired Financing Receivable, Related Allowance	2,865		'		3,483
Average recorded investment	62,548		147,225		'
Interest income recognized	552		664		'
Term [Member]	'		'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'		'
Unpaid principal balance	175,713		'		171,826
Recorded investment	132,239		'		146,588
Impaired Financing Receivable, Related Allowance	3,634		'		7,981
Average recorded investment	149,425		289,103		'
Interest income recognized	1,294		1,836		'
Commercial Real Estate [Member]	'		'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'		'
Unpaid principal balance	245,801		'		257,266
Recorded investment	191,379		'		216,538
Impaired Financing Receivable, Related Allowance	6,499		'		11,464
Average recorded investment	211,973		436,328		'
Interest income recognized	1,846		2,500		'
Home Equity Line of Credit [Member]	'		'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'		'
Unpaid principal balance	18,145		'		17,547
Recorded investment	15,272		'		14,768
Impaired Financing Receivable, Related Allowance	67		'		178
Average recorded investment	14,952		11,455		'
Interest income recognized	135		59		'
Consumer Portfolio Segment [Member]	'		'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'		'
Loans and Leases Receivable, Gross, Consumer, Home Equity	2,165,285		'		2,133,120
One Through Four Family Residential [Member]	'		'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'		'
Unpaid principal balance	94,639		'		95,613
Recorded investment	79,430		'		80,907
Impaired Financing Receivable, Related Allowance	9,790		'		10,276
Average recorded investment	80,154		99,191		'
Interest income recognized	448		382		'
Construction And Other Consumer Real Estate [Member]	'		'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'		'
Unpaid principal balance	4,241		'		4,713
Recorded investment	3,327		'		3,576
Impaired Financing Receivable, Related Allowance	179		'		175
Average recorded investment	3,332		6,122		'
Interest income recognized	35		46		'
Revolving Credit Facility [Member]	'		'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'		'
Unpaid principal balance	'		'		726
Recorded investment	'		'		726
Impaired Financing Receivable, Related Allowance	'		'		0
Consumer Other Financing Receivable [Member]	'		'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'		'
Unpaid principal balance	630		'		0
Recorded investment	630		'		0
Impaired Financing Receivable, Related Allowance	0		'		0
Average recorded investment	704		1,816		'
Interest income recognized	0		0		'
Consumer Loan [Member]	'		'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'		'
Unpaid principal balance	117,655		'		118,599
Recorded investment	98,659		'		99,977
Impaired Financing Receivable, Related Allowance	10,036		'		10,629
Average recorded investment	99,142		118,584		'
Interest income recognized	618		487		'
Fdic Supported Loans [Member]	'		'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'		'
Unpaid principal balance	321,798		'		404,308
Recorded investment	250,185		'		312,309
Impaired Financing Receivable, Related Allowance	4,251		'		6,526
Average recorded investment	283,782		447,841		'
Interest income recognized	22,305	[1]	25,153	[1]	'
Impaired Financing Receivable Related Allowance [Member]	'		'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'		'
Recorded investment	506,474		'		652,007
Impaired Financing Receivable Related Allowance [Member] | Commercial And Industrial [Member]	'		'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'		'
Recorded investment	140,988		'		126,692
Impaired Financing Receivable Related Allowance [Member] | Owner Occupied [Member]	'		'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'		'
Recorded investment	71,281		'		88,584
Impaired Financing Receivable Related Allowance [Member] | Commercial Loan [Member]	'		'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'		'
Recorded investment	212,269		'		215,276
Impaired Financing Receivable Related Allowance [Member] | Commercial Real Estate Construction Financing Receivable [Member]	'		'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'		'
Recorded investment	30,460		'		50,744
Impaired Financing Receivable Related Allowance [Member] | Term [Member]	'		'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'		'
Recorded investment	62,043		'		112,330
Impaired Financing Receivable Related Allowance [Member] | Commercial Real Estate [Member]	'		'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'		'
Recorded investment	92,503		'		163,074
Impaired Financing Receivable Related Allowance [Member] | Home Equity Line of Credit [Member]	'		'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'		'
Recorded investment	2,177		'		2,200
Impaired Financing Receivable Related Allowance [Member] | One Through Four Family Residential [Member]	'		'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'		'
Recorded investment	39,841		'		42,132
Impaired Financing Receivable Related Allowance [Member] | Construction And Other Consumer Real Estate [Member]	'		'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'		'
Recorded investment	986		'		933
Impaired Financing Receivable Related Allowance [Member] | Revolving Credit Facility [Member]	'		'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'		'
Recorded investment	'		'		0
Impaired Financing Receivable Related Allowance [Member] | Consumer Other Financing Receivable [Member]	'		'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'		'
Recorded investment	0		'		0
Impaired Financing Receivable Related Allowance [Member] | Consumer Loan [Member]	'		'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'		'
Recorded investment	43,004		'		45,265
Impaired Financing Receivable Related Allowance [Member] | Fdic Supported Loans [Member]	'		'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'		'
Recorded investment	158,698		'		228,392
Impaired Financing Receivable Recorded Investment With No Allowance [Member]	'		'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'		'
Recorded investment	341,608		'		272,546
Impaired Financing Receivable Recorded Investment With No Allowance [Member] | Commercial And Industrial [Member]	'		'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'		'
Recorded investment	36,155		'		30,092
Impaired Financing Receivable Recorded Investment With No Allowance [Member] | Owner Occupied [Member]	'		'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'		'
Recorded investment	59,435		'		50,361
Impaired Financing Receivable Recorded Investment With No Allowance [Member] | Commercial Loan [Member]	'		'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'		'
Recorded investment	95,590		'		80,453
Impaired Financing Receivable Recorded Investment With No Allowance [Member] | Commercial Real Estate Construction Financing Receivable [Member]	'		'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'		'
Recorded investment	28,680		'		19,206
Impaired Financing Receivable Recorded Investment With No Allowance [Member] | Term [Member]	'		'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'		'
Recorded investment	70,196		'		34,258
Impaired Financing Receivable Recorded Investment With No Allowance [Member] | Commercial Real Estate [Member]	'		'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'		'
Recorded investment	98,876		'		53,464
Impaired Financing Receivable Recorded Investment With No Allowance [Member] | Home Equity Line of Credit [Member]	'		'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'		'
Recorded investment	13,095		'		12,568
Impaired Financing Receivable Recorded Investment With No Allowance [Member] | One Through Four Family Residential [Member]	'		'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'		'
Recorded investment	39,589		'		38,775
Impaired Financing Receivable Recorded Investment With No Allowance [Member] | Construction And Other Consumer Real Estate [Member]	'		'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'		'
Recorded investment	2,341		'		2,643
Impaired Financing Receivable Recorded Investment With No Allowance [Member] | Revolving Credit Facility [Member]	'		'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'		'
Recorded investment	'		'		726
Impaired Financing Receivable Recorded Investment With No Allowance [Member] | Consumer Other Financing Receivable [Member]	'		'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'		'
Recorded investment	630		'		0
Impaired Financing Receivable Recorded Investment With No Allowance [Member] | Consumer Loan [Member]	'		'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'		'
Recorded investment	55,655		'		54,712
Impaired Financing Receivable Recorded Investment With No Allowance [Member] | Fdic Supported Loans [Member]	'		'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'		'
Recorded investment	91,487		'		83,917
Nonaccruing [Member] | Home Equity Credit Line [Member]	'		'		'
Financing Receivable, Allowance for Credit Losses [Line Items]	'		'		'
Loans and Leases Receivable, Gross, Consumer, Home Equity	'		'		$1,257
[1]	The balance of interest income recognized results primarily from accretion of interest income on impaired FDIC-supported loans.

Recovered_Sheet1

Loans And Allowance For Credit Losses (Summary Of Selected Information On TDRs That Includes Recorded Investment On An Accruing And Nonaccruing Basis By Loan Class And Modification Type) (Details) (USD $)	3 Months Ended			12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014		Mar. 31, 2013	Mar. 31, 2014		Mar. 31, 2013	Dec. 31, 2013
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$327		$1,316	$142,400		$181,500	'
Recorded investment resulting from the following modification types	449,420		'	449,420		'	481,434
1-4 family residential	4,795,484		'	4,795,484		'	4,736,665
Construction and other consumer real estate	330,215		'	330,215		'	324,922
Commercial and industrial	12,511,630		'	12,511,630		'	12,481,083
Home equity credit line	2,165,285		'	2,165,285		'	2,133,120
Bankcard and other revolving plans	360,389		'	360,389		'	356,240
Commercial [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Commercial and industrial	12,511,630		'	12,511,630		'	12,481,083
Consumer Portfolio Segment [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
1-4 family residential	4,795,484		'	4,795,484		'	4,736,665
Construction and other consumer real estate	330,215		'	330,215		'	324,922
Home equity credit line	2,165,285		'	2,165,285		'	2,133,120
Bankcard and other revolving plans	360,389		'	360,389		'	356,240
Commercial And Industrial [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	0		25	'		'	'
Owner Occupied [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	0		135	'		'	'
Commercial Loan [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	0		160	'		'	'
Term [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	84		1,071	'		'	'
Commercial Real Estate [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	84		1,071	'		'	'
Home Equity Line of Credit [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	217		85	'		'	'
Construction And Other Consumer Real Estate [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	26		0	'		'	'
Consumer Loan [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	243		85	'		'	'
Accruing [Member] | Commercial And Industrial [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Commercial and industrial	81,713		'	81,713		'	'
Accruing [Member] | Owner Occupied [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Recorded investment resulting from the following modification types	56,828		'	56,828		'	'
Accruing [Member] | Commercial Real Estate Construction Financing Receivable [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Recorded investment resulting from the following modification types	32,970		'	32,970		'	'
Accruing [Member] | Term [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Recorded investment resulting from the following modification types	84,832		'	84,832		'	'
Accruing [Member] | Home Equity Credit Line [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Recorded investment resulting from the following modification types	11,524		'	11,524		'	'
Accruing [Member] | One Through Four Family Residential [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
1-4 family residential	49,027		'	49,027		'	'
Accruing [Member] | Construction And Other Consumer Real Estate [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Construction and other consumer real estate	1,992		'	1,992		'	'
Nonaccruing [Member] | Commercial And Industrial [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Commercial and industrial	27,914		'	27,914		'	'
Nonaccruing [Member] | Owner Occupied [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Recorded investment resulting from the following modification types	29,973		'	29,973		'	'
Nonaccruing [Member] | Commercial Real Estate Construction Financing Receivable [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Recorded investment resulting from the following modification types	26,170		'	26,170		'	'
Nonaccruing [Member] | Term [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Recorded investment resulting from the following modification types	20,231		'	20,231		'	'
Nonaccruing [Member] | Home Equity Line of Credit [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Home equity credit line	1,079		'	1,079		'	'
Nonaccruing [Member] | One Through Four Family Residential [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
1-4 family residential	23,919		'	23,919		'	'
Nonaccruing [Member] | Construction And Other Consumer Real Estate [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Construction and other consumer real estate	1,248		'	1,248		'	'
Nonaccruing [Member] | ERROR in label resolution.	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Bankcard and other revolving plans	0		'	0		'	252
Interest Rate Below Market [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Recorded investment resulting from the following modification types	57,878		'	57,878		'	59,284
Interest Rate Below Market [Member] | Accruing [Member] | Commercial And Industrial [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Commercial and industrial	640		'	640		'	'
Interest Rate Below Market [Member] | Accruing [Member] | Owner Occupied [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Recorded investment resulting from the following modification types	22,484		'	22,484		'	'
Interest Rate Below Market [Member] | Accruing [Member] | Commercial Real Estate Construction Financing Receivable [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Recorded investment resulting from the following modification types	0		'	0		'	'
Interest Rate Below Market [Member] | Accruing [Member] | Term [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Recorded investment resulting from the following modification types	8,603		'	8,603		'	'
Interest Rate Below Market [Member] | Accruing [Member] | Home Equity Credit Line [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Recorded investment resulting from the following modification types	742		'	742		'	'
Interest Rate Below Market [Member] | Accruing [Member] | One Through Four Family Residential [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
1-4 family residential	2,608		'	2,608		'	'
Interest Rate Below Market [Member] | Accruing [Member] | Construction And Other Consumer Real Estate [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Construction and other consumer real estate	123		'	123		'	'
Interest Rate Below Market [Member] | Nonaccruing [Member] | Commercial And Industrial [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Commercial and industrial	1,881		'	1,881		'	'
Interest Rate Below Market [Member] | Nonaccruing [Member] | Owner Occupied [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Recorded investment resulting from the following modification types	2,678		'	2,678		'	'
Interest Rate Below Market [Member] | Nonaccruing [Member] | Commercial Real Estate Construction Financing Receivable [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Recorded investment resulting from the following modification types	11,555		'	11,555		'	'
Interest Rate Below Market [Member] | Nonaccruing [Member] | Term [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Recorded investment resulting from the following modification types	2,311		'	2,311		'	'
Interest Rate Below Market [Member] | Nonaccruing [Member] | Home Equity Line of Credit [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Home equity credit line	0		'	0		'	'
Interest Rate Below Market [Member] | Nonaccruing [Member] | One Through Four Family Residential [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
1-4 family residential	4,249		'	4,249		'	'
Interest Rate Below Market [Member] | Nonaccruing [Member] | Construction And Other Consumer Real Estate [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Construction and other consumer real estate	4		'	4		'	'
Interest Rate Below Market [Member] | Nonaccruing [Member] | ERROR in label resolution.	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Bankcard and other revolving plans	0		'	0		'	0
Maturity Or Term Extension [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Recorded investment resulting from the following modification types	37,116		'	37,116		'	43,069
Maturity Or Term Extension [Member] | Accruing [Member] | Commercial And Industrial [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Commercial and industrial	8,738		'	8,738		'	'
Maturity Or Term Extension [Member] | Accruing [Member] | Owner Occupied [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Recorded investment resulting from the following modification types	1,072		'	1,072		'	'
Maturity Or Term Extension [Member] | Accruing [Member] | Commercial Real Estate Construction Financing Receivable [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Recorded investment resulting from the following modification types	8,003		'	8,003		'	'
Maturity Or Term Extension [Member] | Accruing [Member] | Term [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Recorded investment resulting from the following modification types	8,980		'	8,980		'	'
Maturity Or Term Extension [Member] | Accruing [Member] | Home Equity Credit Line [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Recorded investment resulting from the following modification types	34		'	34		'	'
Maturity Or Term Extension [Member] | Accruing [Member] | One Through Four Family Residential [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
1-4 family residential	55		'	55		'	'
Maturity Or Term Extension [Member] | Accruing [Member] | Construction And Other Consumer Real Estate [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Construction and other consumer real estate	326		'	326		'	'
Maturity Or Term Extension [Member] | Nonaccruing [Member] | Commercial And Industrial [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Commercial and industrial	6,412		'	6,412		'	'
Maturity Or Term Extension [Member] | Nonaccruing [Member] | Owner Occupied [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Recorded investment resulting from the following modification types	1,184		'	1,184		'	'
Maturity Or Term Extension [Member] | Nonaccruing [Member] | Commercial Real Estate Construction Financing Receivable [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Recorded investment resulting from the following modification types	1,075		'	1,075		'	'
Maturity Or Term Extension [Member] | Nonaccruing [Member] | Term [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Recorded investment resulting from the following modification types	84		'	84		'	'
Maturity Or Term Extension [Member] | Nonaccruing [Member] | Home Equity Line of Credit [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Home equity credit line	0		'	0		'	'
Maturity Or Term Extension [Member] | Nonaccruing [Member] | One Through Four Family Residential [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
1-4 family residential	48		'	48		'	'
Maturity Or Term Extension [Member] | Nonaccruing [Member] | Construction And Other Consumer Real Estate [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Construction and other consumer real estate	1,105		'	1,105		'	'
Maturity Or Term Extension [Member] | Nonaccruing [Member] | ERROR in label resolution.	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Bankcard and other revolving plans	0		'	0		'	252
Principal Forgiveness [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Recorded investment resulting from the following modification types	21,976		'	21,976		'	32,616
Principal Forgiveness [Member] | Accruing [Member] | Commercial And Industrial [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Commercial and industrial	21		'	21		'	'
Principal Forgiveness [Member] | Accruing [Member] | Owner Occupied [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Recorded investment resulting from the following modification types	980		'	980		'	'
Principal Forgiveness [Member] | Accruing [Member] | Commercial Real Estate Construction Financing Receivable [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Recorded investment resulting from the following modification types	0		'	0		'	'
Principal Forgiveness [Member] | Accruing [Member] | Term [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Recorded investment resulting from the following modification types	188		'	188		'	'
Principal Forgiveness [Member] | Accruing [Member] | Home Equity Credit Line [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Recorded investment resulting from the following modification types	10,158		'	10,158		'	'
Principal Forgiveness [Member] | Accruing [Member] | One Through Four Family Residential [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
1-4 family residential	6,966		'	6,966		'	'
Principal Forgiveness [Member] | Accruing [Member] | Construction And Other Consumer Real Estate [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Construction and other consumer real estate	49		'	49		'	'
Principal Forgiveness [Member] | Nonaccruing [Member] | Commercial And Industrial [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Commercial and industrial	0		'	0		'	'
Principal Forgiveness [Member] | Nonaccruing [Member] | Owner Occupied [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Recorded investment resulting from the following modification types	1,037		'	1,037		'	'
Principal Forgiveness [Member] | Nonaccruing [Member] | Commercial Real Estate Construction Financing Receivable [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Recorded investment resulting from the following modification types	0		'	0		'	'
Principal Forgiveness [Member] | Nonaccruing [Member] | Term [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Recorded investment resulting from the following modification types	0		'	0		'	'
Principal Forgiveness [Member] | Nonaccruing [Member] | Home Equity Line of Credit [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Home equity credit line	793		'	793		'	'
Principal Forgiveness [Member] | Nonaccruing [Member] | One Through Four Family Residential [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
1-4 family residential	1,784		'	1,784		'	'
Principal Forgiveness [Member] | Nonaccruing [Member] | Construction And Other Consumer Real Estate [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Construction and other consumer real estate	0		'	0		'	'
Principal Forgiveness [Member] | Nonaccruing [Member] | ERROR in label resolution.	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Bankcard and other revolving plans	0		'	0		'	0
Payment Deferral [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Recorded investment resulting from the following modification types	14,082		'	14,082		'	14,006
Payment Deferral [Member] | Accruing [Member] | Commercial And Industrial [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Commercial and industrial	3,553		'	3,553		'	'
Payment Deferral [Member] | Accruing [Member] | Owner Occupied [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Recorded investment resulting from the following modification types	1,282		'	1,282		'	'
Payment Deferral [Member] | Accruing [Member] | Commercial Real Estate Construction Financing Receivable [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Recorded investment resulting from the following modification types	1,077		'	1,077		'	'
Payment Deferral [Member] | Accruing [Member] | Term [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Recorded investment resulting from the following modification types	3,695		'	3,695		'	'
Payment Deferral [Member] | Accruing [Member] | Home Equity Credit Line [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Recorded investment resulting from the following modification types	0		'	0		'	'
Payment Deferral [Member] | Accruing [Member] | One Through Four Family Residential [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
1-4 family residential	638		'	638		'	'
Payment Deferral [Member] | Accruing [Member] | Construction And Other Consumer Real Estate [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Construction and other consumer real estate	0		'	0		'	'
Payment Deferral [Member] | Nonaccruing [Member] | Commercial And Industrial [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Commercial and industrial	412		'	412		'	'
Payment Deferral [Member] | Nonaccruing [Member] | Owner Occupied [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Recorded investment resulting from the following modification types	1,558		'	1,558		'	'
Payment Deferral [Member] | Nonaccruing [Member] | Commercial Real Estate Construction Financing Receivable [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Recorded investment resulting from the following modification types	0		'	0		'	'
Payment Deferral [Member] | Nonaccruing [Member] | Term [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Recorded investment resulting from the following modification types	1,867		'	1,867		'	'
Payment Deferral [Member] | Nonaccruing [Member] | Home Equity Line of Credit [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Home equity credit line	0		'	0		'	'
Payment Deferral [Member] | Nonaccruing [Member] | One Through Four Family Residential [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
1-4 family residential	0		'	0		'	'
Payment Deferral [Member] | Nonaccruing [Member] | Construction And Other Consumer Real Estate [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Construction and other consumer real estate	0		'	0		'	'
Payment Deferral [Member] | Nonaccruing [Member] | ERROR in label resolution.	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Bankcard and other revolving plans	0		'	0		'	0
Other Recorded Investment Resulting From Following Modification [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Recorded investment resulting from the following modification types	32,938	[1]	'	32,938	[1]	'	65,594	[1]
Other Recorded Investment Resulting From Following Modification [Member] | Accruing [Member] | Commercial And Industrial [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Commercial and industrial	4,214	[1]	'	4,214	[1]	'	'
Other Recorded Investment Resulting From Following Modification [Member] | Accruing [Member] | Owner Occupied [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Recorded investment resulting from the following modification types	9,573	[1]	'	9,573	[1]	'	'
Other Recorded Investment Resulting From Following Modification [Member] | Accruing [Member] | Commercial Real Estate Construction Financing Receivable [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Recorded investment resulting from the following modification types	562	[1]	'	562	[1]	'	'
Other Recorded Investment Resulting From Following Modification [Member] | Accruing [Member] | Term [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Recorded investment resulting from the following modification types	4,151	[1]	'	4,151	[1]	'	'
Other Recorded Investment Resulting From Following Modification [Member] | Accruing [Member] | Home Equity Credit Line [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Recorded investment resulting from the following modification types	164	[1]	'	164	[1]	'	'
Other Recorded Investment Resulting From Following Modification [Member] | Accruing [Member] | One Through Four Family Residential [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
1-4 family residential	1,437	[1]	'	1,437	[1]	'	'
Other Recorded Investment Resulting From Following Modification [Member] | Accruing [Member] | Construction And Other Consumer Real Estate [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Construction and other consumer real estate	0	[1]	'	0	[1]	'	'
Other Recorded Investment Resulting From Following Modification [Member] | Nonaccruing [Member] | Commercial And Industrial [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Commercial and industrial	409	[1]	'	409	[1]	'	'
Other Recorded Investment Resulting From Following Modification [Member] | Nonaccruing [Member] | Owner Occupied [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Recorded investment resulting from the following modification types	6,917	[1]	'	6,917	[1]	'	'
Other Recorded Investment Resulting From Following Modification [Member] | Nonaccruing [Member] | Commercial Real Estate Construction Financing Receivable [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Recorded investment resulting from the following modification types	1,645	[1]	'	1,645	[1]	'	'
Other Recorded Investment Resulting From Following Modification [Member] | Nonaccruing [Member] | Term [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Recorded investment resulting from the following modification types	392	[1]	'	392	[1]	'	'
Other Recorded Investment Resulting From Following Modification [Member] | Nonaccruing [Member] | Home Equity Line of Credit [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Home equity credit line	217	[1]	'	217	[1]	'	'
Other Recorded Investment Resulting From Following Modification [Member] | Nonaccruing [Member] | One Through Four Family Residential [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
1-4 family residential	3,257	[1]	'	3,257	[1]	'	'
Other Recorded Investment Resulting From Following Modification [Member] | Nonaccruing [Member] | Construction And Other Consumer Real Estate [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Construction and other consumer real estate	0	[1]	'	0	[1]	'	'
Other Recorded Investment Resulting From Following Modification [Member] | Nonaccruing [Member] | ERROR in label resolution.	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Bankcard and other revolving plans	0	[1]	'	0	[1]	'	0	[1]
Multiple Modification Types [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Recorded investment resulting from the following modification types	285,430	[2]	'	285,430	[2]	'	266,865	[2]
Multiple Modification Types [Member] | Accruing [Member] | Commercial And Industrial [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Commercial and industrial	64,547	[2]	'	64,547	[2]	'	'
Multiple Modification Types [Member] | Accruing [Member] | Owner Occupied [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Recorded investment resulting from the following modification types	21,437	[2]	'	21,437	[2]	'	'
Multiple Modification Types [Member] | Accruing [Member] | Commercial Real Estate Construction Financing Receivable [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Recorded investment resulting from the following modification types	23,328	[2]	'	23,328	[2]	'	'
Multiple Modification Types [Member] | Accruing [Member] | Term [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Recorded investment resulting from the following modification types	59,215	[2]	'	59,215	[2]	'	'
Multiple Modification Types [Member] | Accruing [Member] | Home Equity Credit Line [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Recorded investment resulting from the following modification types	426	[2]	'	426	[2]	'	'
Multiple Modification Types [Member] | Accruing [Member] | One Through Four Family Residential [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
1-4 family residential	37,323	[2]	'	37,323	[2]	'	'
Multiple Modification Types [Member] | Accruing [Member] | Construction And Other Consumer Real Estate [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Construction and other consumer real estate	1,494	[2]	'	1,494	[2]	'	'
Multiple Modification Types [Member] | Nonaccruing [Member] | Commercial And Industrial [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Commercial and industrial	18,800	[2]	'	18,800	[2]	'	'
Multiple Modification Types [Member] | Nonaccruing [Member] | Owner Occupied [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Recorded investment resulting from the following modification types	16,599	[2]	'	16,599	[2]	'	'
Multiple Modification Types [Member] | Nonaccruing [Member] | Commercial Real Estate Construction Financing Receivable [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Recorded investment resulting from the following modification types	11,895	[2]	'	11,895	[2]	'	'
Multiple Modification Types [Member] | Nonaccruing [Member] | Term [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Recorded investment resulting from the following modification types	15,577	[2]	'	15,577	[2]	'	'
Multiple Modification Types [Member] | Nonaccruing [Member] | Home Equity Line of Credit [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Home equity credit line	69	[2]	'	69	[2]	'	'
Multiple Modification Types [Member] | Nonaccruing [Member] | One Through Four Family Residential [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
1-4 family residential	14,581	[2]	'	14,581	[2]	'	'
Multiple Modification Types [Member] | Nonaccruing [Member] | Construction And Other Consumer Real Estate [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Construction and other consumer real estate	139	[2]	'	139	[2]	'	'
Multiple Modification Types [Member] | Nonaccruing [Member] | ERROR in label resolution.	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Bankcard and other revolving plans	$0	[2]	'	$0	[2]	'	$0	[2]
[1]	Includes TDRs that resulted from other modification types including, but not limited to, a legal judgment awarded on different terms, a bankruptcy plan confirmed on different terms, a settlement that includes the delivery of collateral in exchange for debt reduction, etc.
[2]	Includes TDRs that resulted from a combination of any of the previous modification types.

Recovered_Sheet2

Loans And Allowance For Credit Losses (Summary Of Net Financial Impact On Interest Income Due To Interest Rate Modifications Below Market For Accruing TDR Loans) (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Financing Receivable, Modifications [Line Items]	'	'	'
Loans and Leases Receivable, Gross, Consumer, Home Equity	$2,165,285	'	$2,133,120
Net financial impact on interest income	7,671	8,324	'
Commercial [Member]	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'
Net financial impact on interest income	1,497	1,241	'
Commercial Real Estate [Member]	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'
Net financial impact on interest income	2,444	3,075	'
Consumer Portfolio Segment [Member]	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'
Loans and Leases Receivable, Gross, Consumer, Home Equity	2,165,285	'	2,133,120
Net financial impact on interest income	3,730	4,008	'
Commercial And Industrial [Member]	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'
Net financial impact on interest income	212	-181	'
Owner Occupied [Member]	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'
Net financial impact on interest income	-1,709	-1,060	'
Commercial Real Estate Construction Financing Receivable [Member]	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'
Net financial impact on interest income	-666	-416	'
Term [Member]	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'
Net financial impact on interest income	-1,778	-2,659	'
Home Equity Credit Line [Member]	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'
Net financial impact on interest income	-24	-39	'
One Through Four Family Residential [Member]	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'
Net financial impact on interest income	-3,601	-3,860	'
Construction And Other Consumer Real Estate [Member]	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'
Net financial impact on interest income	-105	-109	'
Nonaccruing [Member] | Home Equity Credit Line [Member]	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'
Loans and Leases Receivable, Gross, Consumer, Home Equity	'	'	1,257
Nonaccruing [Member] | Principal Forgiveness [Member] | Home Equity Credit Line [Member]	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'
Loans and Leases Receivable, Gross, Consumer, Home Equity	'	'	1,036
Nonaccruing [Member] | Interest Rate Below Market [Member] | Home Equity Credit Line [Member]	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'
Loans and Leases Receivable, Gross, Consumer, Home Equity	'	'	0
Nonaccruing [Member] | Maturity Or Term Extension [Member] | Home Equity Credit Line [Member]	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'
Loans and Leases Receivable, Gross, Consumer, Home Equity	'	'	0
Nonaccruing [Member] | Payment Deferral [Member] | Home Equity Credit Line [Member]	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'
Loans and Leases Receivable, Gross, Consumer, Home Equity	'	'	0
Nonaccruing [Member] | Other Recorded Investment Resulting From Following Modification [Member] | Home Equity Credit Line [Member]	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'
Loans and Leases Receivable, Gross, Consumer, Home Equity	'	'	221	[1]
Nonaccruing [Member] | Multiple Modification Types [Member] | Home Equity Credit Line [Member]	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'
Loans and Leases Receivable, Gross, Consumer, Home Equity	'	'	$0	[2]
[1]	Includes TDRs that resulted from other modification types including, but not limited to, a legal judgment awarded on different terms, a bankruptcy plan confirmed on different terms, a settlement that includes the delivery of collateral in exchange for debt reduction, etc.
[2]	Includes TDRs that resulted from a combination of any of the previous modification types.

Recovered_Sheet3

Loans And Allowance For Credit Losses (Schedule Of Investment Of Accruing And Nonaccruing Loans Modified As Troubled Debt Restructurings) (Details) (USD $)	3 Months Ended			12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014		Mar. 31, 2013	Mar. 31, 2014		Mar. 31, 2013	Dec. 31, 2013
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$327		$1,316	$142,400		$181,500	'
Loans Receivable, Gross, Commercial and Industrial	12,511,630		'	12,511,630		'	12,481,083
Financing Receivable, Modifications, Recorded Investment	449,420		'	449,420		'	481,434
Loans and Leases Receivable, Gross, Consumer, Home Equity	2,165,285		'	2,165,285		'	2,133,120
Loans and Leases Receivable, Gross, Consumer, Mortgage	4,795,484		'	4,795,484		'	4,736,665
Loans and Leases Receivable, Gross, Consumer, Construction	330,215		'	330,215		'	324,922
Loans and Leases Receivable, Gross, Consumer, Revolving, Credit Card	360,389		'	360,389		'	356,240
Accruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	0		0	'		'	'
Financing Receivable, Modifications, Recorded Investment	318,886		'	318,886		'	345,299
Nonaccruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	327		1,316	'		'	'
Financing Receivable, Modifications, Recorded Investment	130,534		'	130,534		'	136,135
Commercial [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Loans Receivable, Gross, Commercial and Industrial	12,511,630		'	12,511,630		'	12,481,083
Consumer Portfolio Segment [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Loans and Leases Receivable, Gross, Consumer, Home Equity	2,165,285		'	2,165,285		'	2,133,120
Loans and Leases Receivable, Gross, Consumer, Mortgage	4,795,484		'	4,795,484		'	4,736,665
Loans and Leases Receivable, Gross, Consumer, Construction	330,215		'	330,215		'	324,922
Loans and Leases Receivable, Gross, Consumer, Revolving, Credit Card	360,389		'	360,389		'	356,240
Commercial And Industrial [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	0		25	'		'	'
Commercial And Industrial [Member] | Accruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	0		0	'		'	'
Loans Receivable, Gross, Commercial and Industrial	'		'	'		'	83,124
Commercial And Industrial [Member] | Nonaccruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	0		25	'		'	'
Loans Receivable, Gross, Commercial and Industrial	'		'	'		'	28,833
Owner Occupied [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	0		135	'		'	'
Owner Occupied [Member] | Accruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	0		0	'		'	'
Financing Receivable, Modifications, Recorded Investment	'		'	'		'	59,836
Owner Occupied [Member] | Nonaccruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	0		135	'		'	'
Financing Receivable, Modifications, Recorded Investment	'		'	'		'	32,554
Commercial Loan [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	0		160	'		'	'
Commercial Loan [Member] | Accruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	0		0	'		'	'
Financing Receivable, Modifications, Recorded Investment	138,541		'	138,541		'	142,960
Commercial Loan [Member] | Nonaccruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	0		160	'		'	'
Financing Receivable, Modifications, Recorded Investment	57,887		'	57,887		'	61,387
Commercial Real Estate Construction Financing Receivable [Member] | Accruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	'		'	'		'	42,775
Commercial Real Estate Construction Financing Receivable [Member] | Nonaccruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	'		'	'		'	27,174
Term [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	84		1,071	'		'	'
Term [Member] | Accruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	0		0	'		'	'
Financing Receivable, Modifications, Recorded Investment	'		'	'		'	96,712
Term [Member] | Nonaccruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	84		1,071	'		'	'
Financing Receivable, Modifications, Recorded Investment	'		'	'		'	19,245
Commercial Real Estate [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	84		1,071	'		'	'
Commercial Real Estate [Member] | Accruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	0		0	'		'	'
Financing Receivable, Modifications, Recorded Investment	117,802		'	117,802		'	139,487
Commercial Real Estate [Member] | Nonaccruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	84		1,071	'		'	'
Financing Receivable, Modifications, Recorded Investment	46,401		'	46,401		'	46,419
Home Equity Line of Credit [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	217		85	'		'	'
Home Equity Line of Credit [Member] | Accruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	0		0	'		'	'
Financing Receivable, Modifications, Recorded Investment	'		'	'		'	10,836
Home Equity Line of Credit [Member] | Nonaccruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	217		85	'		'	'
One Through Four Family Residential [Member] | Accruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Loans and Leases Receivable, Gross, Consumer, Mortgage	'		'	'		'	50,034
One Through Four Family Residential [Member] | Nonaccruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Loans and Leases Receivable, Gross, Consumer, Mortgage	'		'	'		'	25,327
Construction And Other Consumer Real Estate [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	26		0	'		'	'
Construction And Other Consumer Real Estate [Member] | Accruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	0		0	'		'	'
Loans and Leases Receivable, Gross, Consumer, Construction	'		'	'		'	1,982
Construction And Other Consumer Real Estate [Member] | Nonaccruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	26		0	'		'	'
Loans and Leases Receivable, Gross, Consumer, Construction	'		'	'		'	1,493
Consumer Loan [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	243		85	'		'	'
Consumer Loan [Member] | Accruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	0		0	'		'	'
Financing Receivable, Modifications, Recorded Investment	62,543		'	62,543		'	62,852
Consumer Loan [Member] | Nonaccruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	243		85	'		'	'
Financing Receivable, Modifications, Recorded Investment	26,246		'	26,246		'	28,329
Maturity Or Term Extension [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	37,116		'	37,116		'	43,069
Maturity Or Term Extension [Member] | Accruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	27,208		'	27,208		'	30,128
Maturity Or Term Extension [Member] | Nonaccruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	9,908		'	9,908		'	12,941
Maturity Or Term Extension [Member] | Commercial And Industrial [Member] | Accruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Loans Receivable, Gross, Commercial and Industrial	'		'	'		'	9,848
Maturity Or Term Extension [Member] | Commercial And Industrial [Member] | Nonaccruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Loans Receivable, Gross, Commercial and Industrial	'		'	'		'	6,989
Maturity Or Term Extension [Member] | Owner Occupied [Member] | Accruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	'		'	'		'	1,482
Maturity Or Term Extension [Member] | Owner Occupied [Member] | Nonaccruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	'		'	'		'	1,489
Maturity Or Term Extension [Member] | Commercial Loan [Member] | Accruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	9,810		'	9,810		'	11,330
Maturity Or Term Extension [Member] | Commercial Loan [Member] | Nonaccruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	7,596		'	7,596		'	8,478
Maturity Or Term Extension [Member] | Commercial Real Estate Construction Financing Receivable [Member] | Accruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	'		'	'		'	8,231
Maturity Or Term Extension [Member] | Commercial Real Estate Construction Financing Receivable [Member] | Nonaccruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	'		'	'		'	1,555
Maturity Or Term Extension [Member] | Term [Member] | Accruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	'		'	'		'	9,241
Maturity Or Term Extension [Member] | Term [Member] | Nonaccruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	'		'	'		'	0
Maturity Or Term Extension [Member] | Commercial Real Estate [Member] | Accruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	16,983		'	16,983		'	17,472
Maturity Or Term Extension [Member] | Commercial Real Estate [Member] | Nonaccruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	1,159		'	1,159		'	1,555
Maturity Or Term Extension [Member] | Home Equity Line of Credit [Member] | Accruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	'		'	'		'	0
Maturity Or Term Extension [Member] | One Through Four Family Residential [Member] | Accruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Loans and Leases Receivable, Gross, Consumer, Mortgage	'		'	'		'	997
Maturity Or Term Extension [Member] | One Through Four Family Residential [Member] | Nonaccruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Loans and Leases Receivable, Gross, Consumer, Mortgage	'		'	'		'	1,396
Maturity Or Term Extension [Member] | Construction And Other Consumer Real Estate [Member] | Accruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Loans and Leases Receivable, Gross, Consumer, Construction	'		'	'		'	329
Maturity Or Term Extension [Member] | Construction And Other Consumer Real Estate [Member] | Nonaccruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Loans and Leases Receivable, Gross, Consumer, Construction	'		'	'		'	1,260
Maturity Or Term Extension [Member] | Consumer Loan [Member] | Accruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	415		'	415		'	1,326
Maturity Or Term Extension [Member] | Consumer Loan [Member] | Nonaccruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	1,153		'	1,153		'	2,908
Other Recorded Investment Resulting From Following Modification [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	32,938	[1]	'	32,938	[1]	'	65,594	[1]
Other Recorded Investment Resulting From Following Modification [Member] | Accruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	20,101	[1]	'	20,101	[1]	'	36,424	[1]
Other Recorded Investment Resulting From Following Modification [Member] | Nonaccruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	12,837	[1]	'	12,837	[1]	'	29,170	[1]
Other Recorded Investment Resulting From Following Modification [Member] | Commercial And Industrial [Member] | Accruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Loans Receivable, Gross, Commercial and Industrial	'		'	'		'	4,308	[1]
Other Recorded Investment Resulting From Following Modification [Member] | Commercial And Industrial [Member] | Nonaccruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Loans Receivable, Gross, Commercial and Industrial	'		'	'		'	8,948	[1]
Other Recorded Investment Resulting From Following Modification [Member] | Owner Occupied [Member] | Accruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	'		'	'		'	9,659	[1]
Other Recorded Investment Resulting From Following Modification [Member] | Owner Occupied [Member] | Nonaccruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	'		'	'		'	10,482	[1]
Other Recorded Investment Resulting From Following Modification [Member] | Commercial Loan [Member] | Accruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	13,787	[1]	'	13,787	[1]	'	13,967	[1]
Other Recorded Investment Resulting From Following Modification [Member] | Commercial Loan [Member] | Nonaccruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	7,326	[1]	'	7,326	[1]	'	19,430	[1]
Other Recorded Investment Resulting From Following Modification [Member] | Commercial Real Estate Construction Financing Receivable [Member] | Accruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	'		'	'		'	4,119	[1]
Other Recorded Investment Resulting From Following Modification [Member] | Commercial Real Estate Construction Financing Receivable [Member] | Nonaccruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	'		'	'		'	5,303	[1]
Other Recorded Investment Resulting From Following Modification [Member] | Term [Member] | Accruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	'		'	'		'	14,932	[1]
Other Recorded Investment Resulting From Following Modification [Member] | Term [Member] | Nonaccruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	'		'	'		'	315	[1]
Other Recorded Investment Resulting From Following Modification [Member] | Commercial Real Estate [Member] | Accruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	4,713	[1]	'	4,713	[1]	'	19,051	[1]
Other Recorded Investment Resulting From Following Modification [Member] | Commercial Real Estate [Member] | Nonaccruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	2,037	[1]	'	2,037	[1]	'	5,618	[1]
Other Recorded Investment Resulting From Following Modification [Member] | Home Equity Line of Credit [Member] | Accruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	'		'	'		'	323	[1]
Other Recorded Investment Resulting From Following Modification [Member] | One Through Four Family Residential [Member] | Accruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Loans and Leases Receivable, Gross, Consumer, Mortgage	'		'	'		'	3,083	[1]
Other Recorded Investment Resulting From Following Modification [Member] | One Through Four Family Residential [Member] | Nonaccruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Loans and Leases Receivable, Gross, Consumer, Mortgage	'		'	'		'	3,901	[1]
Other Recorded Investment Resulting From Following Modification [Member] | Construction And Other Consumer Real Estate [Member] | Accruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Loans and Leases Receivable, Gross, Consumer, Construction	'		'	'		'	0	[1]
Other Recorded Investment Resulting From Following Modification [Member] | Construction And Other Consumer Real Estate [Member] | Nonaccruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Loans and Leases Receivable, Gross, Consumer, Construction	'		'	'		'	0	[1]
Other Recorded Investment Resulting From Following Modification [Member] | Consumer Loan [Member] | Accruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	1,601	[1]	'	1,601	[1]	'	3,406	[1]
Other Recorded Investment Resulting From Following Modification [Member] | Consumer Loan [Member] | Nonaccruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	3,474	[1]	'	3,474	[1]	'	4,122	[1]
Multiple Modification Types [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	285,430	[2]	'	285,430	[2]	'	266,865	[2]
Multiple Modification Types [Member] | Accruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	207,770	[2]	'	207,770	[2]	'	203,727	[2]
Multiple Modification Types [Member] | Nonaccruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	77,660	[2]	'	77,660	[2]	'	63,138	[2]
Multiple Modification Types [Member] | Commercial And Industrial [Member] | Accruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Loans Receivable, Gross, Commercial and Industrial	'		'	'		'	53,117	[2]
Multiple Modification Types [Member] | Commercial And Industrial [Member] | Nonaccruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Loans Receivable, Gross, Commercial and Industrial	'		'	'		'	10,395	[2]
Multiple Modification Types [Member] | Owner Occupied [Member] | Accruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	'		'	'		'	23,576	[2]
Multiple Modification Types [Member] | Owner Occupied [Member] | Nonaccruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	'		'	'		'	14,927	[2]
Multiple Modification Types [Member] | Commercial Loan [Member] | Accruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	85,984	[2]	'	85,984	[2]	'	76,693	[2]
Multiple Modification Types [Member] | Commercial Loan [Member] | Nonaccruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	35,399	[2]	'	35,399	[2]	'	25,322	[2]
Multiple Modification Types [Member] | Commercial Real Estate Construction Financing Receivable [Member] | Accruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	'		'	'		'	28,295	[2]
Multiple Modification Types [Member] | Commercial Real Estate Construction Financing Receivable [Member] | Nonaccruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	'		'	'		'	8,617	[2]
Multiple Modification Types [Member] | Term [Member] | Accruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	'		'	'		'	61,024	[2]
Multiple Modification Types [Member] | Term [Member] | Nonaccruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	'		'	'		'	14,861	[2]
Multiple Modification Types [Member] | Commercial Real Estate [Member] | Accruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	82,543	[2]	'	82,543	[2]	'	89,319	[2]
Multiple Modification Types [Member] | Commercial Real Estate [Member] | Nonaccruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	27,472	[2]	'	27,472	[2]	'	23,478	[2]
Multiple Modification Types [Member] | Home Equity Line of Credit [Member] | Accruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	'		'	'		'	332	[2]
Multiple Modification Types [Member] | One Through Four Family Residential [Member] | Accruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Loans and Leases Receivable, Gross, Consumer, Mortgage	'		'	'		'	35,869	[2]
Multiple Modification Types [Member] | One Through Four Family Residential [Member] | Nonaccruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Loans and Leases Receivable, Gross, Consumer, Mortgage	'		'	'		'	14,109	[2]
Multiple Modification Types [Member] | Construction And Other Consumer Real Estate [Member] | Accruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Loans and Leases Receivable, Gross, Consumer, Construction	'		'	'		'	1,514	[2]
Multiple Modification Types [Member] | Construction And Other Consumer Real Estate [Member] | Nonaccruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Loans and Leases Receivable, Gross, Consumer, Construction	'		'	'		'	229	[2]
Multiple Modification Types [Member] | Consumer Loan [Member] | Accruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	39,243	[2]	'	39,243	[2]	'	37,715	[2]
Multiple Modification Types [Member] | Consumer Loan [Member] | Nonaccruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	14,789	[2]	'	14,789	[2]	'	14,338	[2]
Interest Rate Below Market [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	57,878		'	57,878		'	59,284
Interest Rate Below Market [Member] | Accruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	35,200		'	35,200		'	36,092
Interest Rate Below Market [Member] | Nonaccruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	22,678		'	22,678		'	23,192
Interest Rate Below Market [Member] | Commercial And Industrial [Member] | Accruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Loans Receivable, Gross, Commercial and Industrial	'		'	'		'	1,143
Interest Rate Below Market [Member] | Commercial And Industrial [Member] | Nonaccruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Loans Receivable, Gross, Commercial and Industrial	'		'	'		'	2,028
Interest Rate Below Market [Member] | Owner Occupied [Member] | Accruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	'		'	'		'	22,841
Interest Rate Below Market [Member] | Owner Occupied [Member] | Nonaccruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	'		'	'		'	3,020
Interest Rate Below Market [Member] | Commercial Loan [Member] | Accruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	23,124		'	23,124		'	23,984
Interest Rate Below Market [Member] | Commercial Loan [Member] | Nonaccruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	4,559		'	4,559		'	5,048
Interest Rate Below Market [Member] | Commercial Real Estate Construction Financing Receivable [Member] | Accruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	'		'	'		'	1,067
Interest Rate Below Market [Member] | Commercial Real Estate Construction Financing Receivable [Member] | Nonaccruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	'		'	'		'	11,699
Interest Rate Below Market [Member] | Term [Member] | Accruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	'		'	'		'	7,542
Interest Rate Below Market [Member] | Term [Member] | Nonaccruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	'		'	'		'	2,126
Interest Rate Below Market [Member] | Commercial Real Estate [Member] | Accruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	8,603		'	8,603		'	8,609
Interest Rate Below Market [Member] | Commercial Real Estate [Member] | Nonaccruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	13,866		'	13,866		'	13,825
Interest Rate Below Market [Member] | Home Equity Line of Credit [Member] | Accruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	'		'	'		'	743
Interest Rate Below Market [Member] | One Through Four Family Residential [Member] | Accruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Loans and Leases Receivable, Gross, Consumer, Mortgage	'		'	'		'	2,628
Interest Rate Below Market [Member] | One Through Four Family Residential [Member] | Nonaccruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Loans and Leases Receivable, Gross, Consumer, Mortgage	'		'	'		'	4,315
Interest Rate Below Market [Member] | Construction And Other Consumer Real Estate [Member] | Accruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Loans and Leases Receivable, Gross, Consumer, Construction	'		'	'		'	128
Interest Rate Below Market [Member] | Construction And Other Consumer Real Estate [Member] | Nonaccruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Loans and Leases Receivable, Gross, Consumer, Construction	'		'	'		'	4
Interest Rate Below Market [Member] | Consumer Loan [Member] | Accruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	3,473		'	3,473		'	3,499
Interest Rate Below Market [Member] | Consumer Loan [Member] | Nonaccruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	4,253		'	4,253		'	4,319
Principal Forgiveness [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	21,976		'	21,976		'	32,616
Principal Forgiveness [Member] | Accruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	18,362		'	18,362		'	28,931
Principal Forgiveness [Member] | Nonaccruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	3,614		'	3,614		'	3,685
Principal Forgiveness [Member] | Commercial And Industrial [Member] | Accruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Loans Receivable, Gross, Commercial and Industrial	'		'	'		'	11,491
Principal Forgiveness [Member] | Commercial And Industrial [Member] | Nonaccruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Loans Receivable, Gross, Commercial and Industrial	'		'	'		'	0
Principal Forgiveness [Member] | Owner Occupied [Member] | Accruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	'		'	'		'	987
Principal Forgiveness [Member] | Owner Occupied [Member] | Nonaccruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	'		'	'		'	1,043
Principal Forgiveness [Member] | Commercial Loan [Member] | Accruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	1,001		'	1,001		'	12,478
Principal Forgiveness [Member] | Commercial Loan [Member] | Nonaccruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	1,037		'	1,037		'	1,043
Principal Forgiveness [Member] | Commercial Real Estate Construction Financing Receivable [Member] | Accruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	'		'	'		'	0
Principal Forgiveness [Member] | Commercial Real Estate Construction Financing Receivable [Member] | Nonaccruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	'		'	'		'	0
Principal Forgiveness [Member] | Term [Member] | Accruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	'		'	'		'	190
Principal Forgiveness [Member] | Term [Member] | Nonaccruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	'		'	'		'	0
Principal Forgiveness [Member] | Commercial Real Estate [Member] | Accruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	188		'	188		'	190
Principal Forgiveness [Member] | Commercial Real Estate [Member] | Nonaccruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	0		'	0		'	0
Principal Forgiveness [Member] | Home Equity Line of Credit [Member] | Accruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	'		'	'		'	9,438
Principal Forgiveness [Member] | One Through Four Family Residential [Member] | Accruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Loans and Leases Receivable, Gross, Consumer, Mortgage	'		'	'		'	6,814
Principal Forgiveness [Member] | One Through Four Family Residential [Member] | Nonaccruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Loans and Leases Receivable, Gross, Consumer, Mortgage	'		'	'		'	1,606
Principal Forgiveness [Member] | Construction And Other Consumer Real Estate [Member] | Accruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Loans and Leases Receivable, Gross, Consumer, Construction	'		'	'		'	11
Principal Forgiveness [Member] | Construction And Other Consumer Real Estate [Member] | Nonaccruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Loans and Leases Receivable, Gross, Consumer, Construction	'		'	'		'	0
Principal Forgiveness [Member] | Consumer Loan [Member] | Accruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	17,173		'	17,173		'	16,263
Principal Forgiveness [Member] | Consumer Loan [Member] | Nonaccruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	2,577		'	2,577		'	2,642
Payment Deferral [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	14,082		'	14,082		'	14,006
Payment Deferral [Member] | Accruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	10,245		'	10,245		'	9,997
Payment Deferral [Member] | Nonaccruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	3,837		'	3,837		'	4,009
Payment Deferral [Member] | Commercial And Industrial [Member] | Accruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Loans Receivable, Gross, Commercial and Industrial	'		'	'		'	3,217
Payment Deferral [Member] | Commercial And Industrial [Member] | Nonaccruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Loans Receivable, Gross, Commercial and Industrial	'		'	'		'	473
Payment Deferral [Member] | Owner Occupied [Member] | Accruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	'		'	'		'	1,291
Payment Deferral [Member] | Owner Occupied [Member] | Nonaccruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	'		'	'		'	1,593
Payment Deferral [Member] | Commercial Loan [Member] | Accruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	4,835		'	4,835		'	4,508
Payment Deferral [Member] | Commercial Loan [Member] | Nonaccruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	1,970		'	1,970		'	2,066
Payment Deferral [Member] | Commercial Real Estate Construction Financing Receivable [Member] | Accruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	'		'	'		'	1,063
Payment Deferral [Member] | Commercial Real Estate Construction Financing Receivable [Member] | Nonaccruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	'		'	'		'	0
Payment Deferral [Member] | Term [Member] | Accruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	'		'	'		'	3,783
Payment Deferral [Member] | Term [Member] | Nonaccruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	'		'	'		'	1,943
Payment Deferral [Member] | Commercial Real Estate [Member] | Accruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	4,772		'	4,772		'	4,846
Payment Deferral [Member] | Commercial Real Estate [Member] | Nonaccruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	1,867		'	1,867		'	1,943
Payment Deferral [Member] | Home Equity Line of Credit [Member] | Accruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	'		'	'		'	0
Payment Deferral [Member] | One Through Four Family Residential [Member] | Accruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Loans and Leases Receivable, Gross, Consumer, Mortgage	'		'	'		'	643
Payment Deferral [Member] | One Through Four Family Residential [Member] | Nonaccruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Loans and Leases Receivable, Gross, Consumer, Mortgage	'		'	'		'	0
Payment Deferral [Member] | Construction And Other Consumer Real Estate [Member] | Accruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Loans and Leases Receivable, Gross, Consumer, Construction	'		'	'		'	0
Payment Deferral [Member] | Construction And Other Consumer Real Estate [Member] | Nonaccruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Loans and Leases Receivable, Gross, Consumer, Construction	'		'	'		'	0
Payment Deferral [Member] | Consumer Loan [Member] | Accruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	638		'	638		'	643
Payment Deferral [Member] | Consumer Loan [Member] | Nonaccruing [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	0		'	0		'	0
Nonaccruing [Member] | Commercial And Industrial [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Loans Receivable, Gross, Commercial and Industrial	27,914		'	27,914		'	'
Nonaccruing [Member] | Owner Occupied [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	29,973		'	29,973		'	'
Nonaccruing [Member] | Commercial Real Estate Construction Financing Receivable [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	26,170		'	26,170		'	'
Nonaccruing [Member] | Term [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	20,231		'	20,231		'	'
Nonaccruing [Member] | Home Equity Line of Credit [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Loans and Leases Receivable, Gross, Consumer, Home Equity	1,079		'	1,079		'	'
Nonaccruing [Member] | One Through Four Family Residential [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Loans and Leases Receivable, Gross, Consumer, Mortgage	23,919		'	23,919		'	'
Nonaccruing [Member] | Construction And Other Consumer Real Estate [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Loans and Leases Receivable, Gross, Consumer, Construction	1,248		'	1,248		'	'
Nonaccruing [Member] | Revolving Credit Facility [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Loans and Leases Receivable, Gross, Consumer, Revolving, Credit Card	0		'	0		'	252
Nonaccruing [Member] | Maturity Or Term Extension [Member] | Commercial And Industrial [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Loans Receivable, Gross, Commercial and Industrial	6,412		'	6,412		'	'
Nonaccruing [Member] | Maturity Or Term Extension [Member] | Owner Occupied [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	1,184		'	1,184		'	'
Nonaccruing [Member] | Maturity Or Term Extension [Member] | Commercial Real Estate Construction Financing Receivable [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	1,075		'	1,075		'	'
Nonaccruing [Member] | Maturity Or Term Extension [Member] | Term [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	84		'	84		'	'
Nonaccruing [Member] | Maturity Or Term Extension [Member] | Home Equity Line of Credit [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Loans and Leases Receivable, Gross, Consumer, Home Equity	0		'	0		'	'
Nonaccruing [Member] | Maturity Or Term Extension [Member] | One Through Four Family Residential [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Loans and Leases Receivable, Gross, Consumer, Mortgage	48		'	48		'	'
Nonaccruing [Member] | Maturity Or Term Extension [Member] | Construction And Other Consumer Real Estate [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Loans and Leases Receivable, Gross, Consumer, Construction	1,105		'	1,105		'	'
Nonaccruing [Member] | Maturity Or Term Extension [Member] | Revolving Credit Facility [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Loans and Leases Receivable, Gross, Consumer, Revolving, Credit Card	0		'	0		'	252
Nonaccruing [Member] | Other Recorded Investment Resulting From Following Modification [Member] | Commercial And Industrial [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Loans Receivable, Gross, Commercial and Industrial	409	[1]	'	409	[1]	'	'
Nonaccruing [Member] | Other Recorded Investment Resulting From Following Modification [Member] | Owner Occupied [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	6,917	[1]	'	6,917	[1]	'	'
Nonaccruing [Member] | Other Recorded Investment Resulting From Following Modification [Member] | Commercial Real Estate Construction Financing Receivable [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	1,645	[1]	'	1,645	[1]	'	'
Nonaccruing [Member] | Other Recorded Investment Resulting From Following Modification [Member] | Term [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	392	[1]	'	392	[1]	'	'
Nonaccruing [Member] | Other Recorded Investment Resulting From Following Modification [Member] | Home Equity Line of Credit [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Loans and Leases Receivable, Gross, Consumer, Home Equity	217	[1]	'	217	[1]	'	'
Nonaccruing [Member] | Other Recorded Investment Resulting From Following Modification [Member] | One Through Four Family Residential [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Loans and Leases Receivable, Gross, Consumer, Mortgage	3,257	[1]	'	3,257	[1]	'	'
Nonaccruing [Member] | Other Recorded Investment Resulting From Following Modification [Member] | Construction And Other Consumer Real Estate [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Loans and Leases Receivable, Gross, Consumer, Construction	0	[1]	'	0	[1]	'	'
Nonaccruing [Member] | Other Recorded Investment Resulting From Following Modification [Member] | Revolving Credit Facility [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Loans and Leases Receivable, Gross, Consumer, Revolving, Credit Card	0	[1]	'	0	[1]	'	0	[1]
Nonaccruing [Member] | Multiple Modification Types [Member] | Commercial And Industrial [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Loans Receivable, Gross, Commercial and Industrial	18,800	[2]	'	18,800	[2]	'	'
Nonaccruing [Member] | Multiple Modification Types [Member] | Owner Occupied [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	16,599	[2]	'	16,599	[2]	'	'
Nonaccruing [Member] | Multiple Modification Types [Member] | Commercial Real Estate Construction Financing Receivable [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	11,895	[2]	'	11,895	[2]	'	'
Nonaccruing [Member] | Multiple Modification Types [Member] | Term [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	15,577	[2]	'	15,577	[2]	'	'
Nonaccruing [Member] | Multiple Modification Types [Member] | Home Equity Line of Credit [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Loans and Leases Receivable, Gross, Consumer, Home Equity	69	[2]	'	69	[2]	'	'
Nonaccruing [Member] | Multiple Modification Types [Member] | One Through Four Family Residential [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Loans and Leases Receivable, Gross, Consumer, Mortgage	14,581	[2]	'	14,581	[2]	'	'
Nonaccruing [Member] | Multiple Modification Types [Member] | Construction And Other Consumer Real Estate [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Loans and Leases Receivable, Gross, Consumer, Construction	139	[2]	'	139	[2]	'	'
Nonaccruing [Member] | Multiple Modification Types [Member] | Revolving Credit Facility [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Loans and Leases Receivable, Gross, Consumer, Revolving, Credit Card	0	[2]	'	0	[2]	'	0	[2]
Nonaccruing [Member] | Interest Rate Below Market [Member] | Commercial And Industrial [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Loans Receivable, Gross, Commercial and Industrial	1,881		'	1,881		'	'
Nonaccruing [Member] | Interest Rate Below Market [Member] | Owner Occupied [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	2,678		'	2,678		'	'
Nonaccruing [Member] | Interest Rate Below Market [Member] | Commercial Real Estate Construction Financing Receivable [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	11,555		'	11,555		'	'
Nonaccruing [Member] | Interest Rate Below Market [Member] | Term [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	2,311		'	2,311		'	'
Nonaccruing [Member] | Interest Rate Below Market [Member] | Home Equity Line of Credit [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Loans and Leases Receivable, Gross, Consumer, Home Equity	0		'	0		'	'
Nonaccruing [Member] | Interest Rate Below Market [Member] | One Through Four Family Residential [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Loans and Leases Receivable, Gross, Consumer, Mortgage	4,249		'	4,249		'	'
Nonaccruing [Member] | Interest Rate Below Market [Member] | Construction And Other Consumer Real Estate [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Loans and Leases Receivable, Gross, Consumer, Construction	4		'	4		'	'
Nonaccruing [Member] | Interest Rate Below Market [Member] | Revolving Credit Facility [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Loans and Leases Receivable, Gross, Consumer, Revolving, Credit Card	0		'	0		'	0
Nonaccruing [Member] | Principal Forgiveness [Member] | Commercial And Industrial [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Loans Receivable, Gross, Commercial and Industrial	0		'	0		'	'
Nonaccruing [Member] | Principal Forgiveness [Member] | Owner Occupied [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	1,037		'	1,037		'	'
Nonaccruing [Member] | Principal Forgiveness [Member] | Commercial Real Estate Construction Financing Receivable [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	0		'	0		'	'
Nonaccruing [Member] | Principal Forgiveness [Member] | Term [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	0		'	0		'	'
Nonaccruing [Member] | Principal Forgiveness [Member] | Home Equity Line of Credit [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Loans and Leases Receivable, Gross, Consumer, Home Equity	793		'	793		'	'
Nonaccruing [Member] | Principal Forgiveness [Member] | One Through Four Family Residential [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Loans and Leases Receivable, Gross, Consumer, Mortgage	1,784		'	1,784		'	'
Nonaccruing [Member] | Principal Forgiveness [Member] | Construction And Other Consumer Real Estate [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Loans and Leases Receivable, Gross, Consumer, Construction	0		'	0		'	'
Nonaccruing [Member] | Principal Forgiveness [Member] | Revolving Credit Facility [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Loans and Leases Receivable, Gross, Consumer, Revolving, Credit Card	0		'	0		'	0
Nonaccruing [Member] | Payment Deferral [Member] | Commercial And Industrial [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Loans Receivable, Gross, Commercial and Industrial	412		'	412		'	'
Nonaccruing [Member] | Payment Deferral [Member] | Owner Occupied [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	1,558		'	1,558		'	'
Nonaccruing [Member] | Payment Deferral [Member] | Commercial Real Estate Construction Financing Receivable [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	0		'	0		'	'
Nonaccruing [Member] | Payment Deferral [Member] | Term [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Financing Receivable, Modifications, Recorded Investment	1,867		'	1,867		'	'
Nonaccruing [Member] | Payment Deferral [Member] | Home Equity Line of Credit [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Loans and Leases Receivable, Gross, Consumer, Home Equity	0		'	0		'	'
Nonaccruing [Member] | Payment Deferral [Member] | One Through Four Family Residential [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Loans and Leases Receivable, Gross, Consumer, Mortgage	0		'	0		'	'
Nonaccruing [Member] | Payment Deferral [Member] | Construction And Other Consumer Real Estate [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Loans and Leases Receivable, Gross, Consumer, Construction	0		'	0		'	'
Nonaccruing [Member] | Payment Deferral [Member] | Revolving Credit Facility [Member]	'		'	'		'	'
Financing Receivable, Modifications [Line Items]	'		'	'		'	'
Loans and Leases Receivable, Gross, Consumer, Revolving, Credit Card	$0		'	$0		'	$0
[1]	Includes TDRs that resulted from other modification types including, but not limited to, a legal judgment awarded on different terms, a bankruptcy plan confirmed on different terms, a settlement that includes the delivery of collateral in exchange for debt reduction, etc.
[2]	Includes TDRs that resulted from a combination of any of the previous modification types.

Recovered_Sheet4

Loans And Allowance For Credit Losses (Schedule Of Outstanding Balances Of All Required Payments And The Related Carrying Amounts For PCI Loans) (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Loans And Allowance For Credit Losses [Abstract]	'	'
Commercial	$130,834	$150,191
Commercial real estate	173,714	233,720
Consumer	23,724	28,608
Outstanding balance	328,272	412,519
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Carrying Amount, Net	249,563	311,797
ALLL	4,203	6,478
Carrying amount, net	$245,360	$305,319

Recovered_Sheet5

Loans And Allowance For Credit Losses (Schedule Of Changes In The Accretable Yield For PCI Loans) (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Changes in Accretable Yield [Roll Forward]	'	'
Balance at beginning of period	$77,528	$134,461
Accretion	-22,307	-25,266
Reclassification from nonaccretable difference	8,920	14,872
Disposals and other	1,624	2,292
Balance at end of period	$65,765	$126,359

Recovered_Sheet6

Loans And Allowance For Credit Losses (Schedule Of Changes In The FDIC Indemnification Asset) (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Loans And Allowance For Credit Losses [Abstract]	'	'
FDIC Indemnification Asset	$13.20	$26.40

Derivative_Instruments_And_Hed2

Derivative Instruments And Hedging Activities (Narrative) (Details) (USD $)

0 Months Ended

3 Months Ended

3 Months Ended

3 Months Ended

Mar. 31, 2014

Jun. 30, 2014

Mar. 31, 2014

Mar. 31, 2013

Dec. 31, 2013

Jul. 28, 2010

Mar. 31, 2014

Mar. 31, 2013

Dec. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Interest Rate Swaps [Member]

Derivatives Designated As Hedging Instruments [Member]

Derivatives Designated As Hedging Instruments [Member]

Derivatives Designated As Hedging Instruments [Member]

Derivatives Designated As Hedging Instruments [Member]

Derivatives Designated As Hedging Instruments [Member]

Other Liabilities [Member]

Other Liabilities [Member]

Other Liabilities [Member]

Other Liabilities [Member]

Other Liabilities [Member]

Other Liabilities [Member]

Total Return Swap [Member]

Cash Flow Hedging [Member]

Cash Flow Hedging [Member]

Derivatives Designated As Hedging Instruments [Member]

Derivatives Designated As Hedging Instruments [Member]

Derivative Liabilities Included Other liabilities [Member]

Derivative Liabilities Included Other liabilities [Member]

Derivative [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Derivative Instruments in Hedges, Net Investment in Foreign Operations, Assets, Fair Value

$0

'

$0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Losses on derivative instruments from counterparty nonperformance

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net

'

'

351,000

[1]

1,605,000

[1]

'

'

351,000

[1]

1,605,000

[1]

'

351,000

[1],[2]

1,605,000

[1],[2]

'

'

'

'

'

'

Derivative Liability, Fair Value, Gross Liability

'

'

'

'

'

'

'

'

'

'

'

62,589,000

68,397,000

492,000

583,000

62,589,000

68,397,000

Fair values of derivative assets reduced (increased) by net credit valuation adjustments

1,600,000

'

1,600,000

3,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Fair values of derivative liabilities reduced (increased) by net credit valuation adjustments

1,200,000

'

1,200,000

-100,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Future Expected

'

'

1,300,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total derivatives, Notional amount

4,705,155,000

'

4,705,155,000

'

4,979,378,000

1,160,000,000

150,000,000

'

100,000,000

'

'

'

'

'

'

'

'

Cash collateral pledged for derivative liabilities

38,500,000

'

38,500,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Additional collateral that would be required to be pledge if credit rating was downgraded by one notch

1,400,000

'

1,400,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

TRS Expense Recognized Beyond Accrual

'

500,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Par Amount of Portfolio Covered by TRS

545,000,000

'

545,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Reduction of Risk-weighted Assets from TRS

$1,000,000,000

'

$1,000,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

[1]

Amounts for the three months ended MarchB 31 2014 and 2013 of $0.4 million and $1.6 million, respectively, are the amounts of reclassification to earnings from AOCI presented in Note 8.

[2]

Amounts recognized in OCI and reclassified from accumulated OCI (bAOCIb) represent the effective portion of the derivative gain (loss).

Derivative_Instruments_And_Hed3

Derivative Instruments And Hedging Activities (Schedule Of Notional Amounts And Recorded Gross Fair Values And Related Gain (Loss) Of Derivative Instruments) (Details) (USD $)	3 Months Ended
	Mar. 31, 2014		Mar. 31, 2013		Dec. 31, 2013
Derivative [Line Items]	'		'		'
Other Comprehensvie Income Loss Reclassification Adjustment From AOCI on Derivative Instruments, Gross	$400,000		$1,600,000		'
Total derivatives, Notional amount	4,705,155,000		'		4,979,378,000
Amount of derivative gain (loss), recognized in OCI	538,000		-4,000		'
Amount of derivative gain (loss), Reclassified from AOCI to interest income	351,000	[1]	1,605,000	[1]	'
Derivatives instruments, Noninterest income (expense)	-6,259,000		-1,412,000		'
Derivatives designated as hedging instruments, Offset to interest expense	718,000		766,000		'
Cash Flow Hedging [Member]	'		'		'
Derivative [Line Items]	'		'		'
Derivatives instruments, Noninterest income (expense)	0	[2]	0	[2]	'
Other Assets [Member]	'		'		'
Derivative [Line Items]	'		'		'
Derivatives hedging instruments, assets	57,683,000		'		65,683,000
Other Liabilities [Member]	'		'		'
Derivative [Line Items]	'		'		'
Derivatives hedging instruments, liabilities	62,589,000		'		68,397,000
Derivatives Designated As Hedging Instruments [Member]	'		'		'
Derivative [Line Items]	'		'		'
Total derivatives, Notional amount	150,000,000		'		100,000,000
Amount of derivative gain (loss), recognized in OCI	538,000		-4,000		'
Amount of derivative gain (loss), Reclassified from AOCI to interest income	351,000	[1]	1,605,000	[1]	'
Derivatives instruments, Noninterest income (expense)	0		0		'
Derivatives designated as hedging instruments, Offset to interest expense	718,000		766,000		'
Derivatives Designated As Hedging Instruments [Member] | Cash Flow Hedging [Member]	'		'		'
Derivative [Line Items]	'		'		'
Amount of derivative gain (loss), recognized in OCI	538,000	[2]	-4,000	[2]	'
Amount of derivative gain (loss), Reclassified from AOCI to interest income	351,000	[1],[2]	1,605,000	[1],[2]	'
Derivatives Designated As Hedging Instruments [Member] | Other Assets [Member]	'		'		'
Derivative [Line Items]	'		'		'
Derivatives hedging instruments, assets	298,000		'		202,000
Derivatives Designated As Hedging Instruments [Member] | Other Liabilities [Member]	'		'		'
Derivative [Line Items]	'		'		'
Derivatives hedging instruments, liabilities	492,000		'		583,000
Derivatives Designated As Hedging Instruments [Member] | Interest Rate Swaps [Member] | Cash Flow Hedging [Member]	'		'		'
Derivative [Line Items]	'		'		'
Total derivatives, Notional amount	150,000,000	[2]	'		100,000,000	[2]
Amount of derivative gain (loss), recognized in OCI	538,000	[2]	-4,000	[2]	'
Amount of derivative gain (loss), Reclassified from AOCI to interest income	351,000	[1],[2]	1,605,000	[1],[2]	'
Derivatives instruments, Noninterest income (expense)	0	[2]	0	[2]	'
Derivatives Designated As Hedging Instruments [Member] | Interest Rate Swaps [Member] | Other Assets [Member] | Cash Flow Hedging [Member]	'		'		'
Derivative [Line Items]	'		'		'
Derivatives hedging instruments, assets	298,000	[2]	'		202,000	[2]
Derivatives Designated As Hedging Instruments [Member] | Interest Rate Swaps [Member] | Other Liabilities [Member] | Cash Flow Hedging [Member]	'		'		'
Derivative [Line Items]	'		'		'
Derivatives hedging instruments, liabilities	492,000	[2]	'		583,000	[2]
Derivatives Designated As Hedging Instruments [Member] | Terminated Swaps On Long-Term Debt [Member] | Fair Value Hedges [Member]	'		'		'
Derivative [Line Items]	'		'		'
Derivatives designated as hedging instruments, Offset to interest expense	718,000		766,000		'
Derivatives Not Designated As Hedging Instruments [Member]	'		'		'
Derivative [Line Items]	'		'		'
Total derivatives, Notional amount	4,555,155,000		'		4,879,378,000
Derivatives instruments, Noninterest income (expense)	-6,259,000		-1,412,000		'
Derivatives Not Designated As Hedging Instruments [Member] | Other Assets [Member]	'		'		'
Derivative [Line Items]	'		'		'
Derivatives hedging instruments, assets	57,385,000		'		65,481,000
Derivatives Not Designated As Hedging Instruments [Member] | Other Liabilities [Member]	'		'		'
Derivative [Line Items]	'		'		'
Derivatives hedging instruments, liabilities	62,097,000		'		67,814,000
Derivatives Not Designated As Hedging Instruments [Member] | Foreign Exchange [Member]	'		'		'
Derivative [Line Items]	'		'		'
Total derivatives, Notional amount	434,058,000		'		751,066,000
Derivatives instruments, Noninterest income (expense)	1,711,000		2,754,000		'
Derivatives Not Designated As Hedging Instruments [Member] | Foreign Exchange [Member] | Other Assets [Member]	'		'		'
Derivative [Line Items]	'		'		'
Derivatives hedging instruments, assets	6,409,000		'		9,614,000
Derivatives Not Designated As Hedging Instruments [Member] | Foreign Exchange [Member] | Other Liabilities [Member]	'		'		'
Derivative [Line Items]	'		'		'
Derivatives hedging instruments, liabilities	5,412,000		'		8,643,000
Derivatives Not Designated As Hedging Instruments [Member] | Interest Rate Swaps [Member]	'		'		'
Derivative [Line Items]	'		'		'
Total derivatives, Notional amount	60,967,000		'		65,850,000
Derivatives instruments, Noninterest income (expense)	6,000		-67,000		'
Derivatives Not Designated As Hedging Instruments [Member] | Interest Rate Swaps [Member] | Other Assets [Member]	'		'		'
Derivative [Line Items]	'		'		'
Derivatives hedging instruments, assets	332,000		'		420,000
Derivatives Not Designated As Hedging Instruments [Member] | Interest Rate Swaps [Member] | Other Liabilities [Member]	'		'		'
Derivative [Line Items]	'		'		'
Derivatives hedging instruments, liabilities	286,000		'		421,000
Derivatives Not Designated As Hedging Instruments [Member] | Interest Rate Swaps For Customers [Member]	'		'		'
Derivative [Line Items]	'		'		'
Total derivatives, Notional amount	2,900,444,000	[3]	'		2,902,776,000	[3]
Derivatives instruments, Noninterest income (expense)	-549,000	[3]	1,458,000	[3]	'
Derivatives Not Designated As Hedging Instruments [Member] | Interest Rate Swaps For Customers [Member] | Other Assets [Member]	'		'		'
Derivative [Line Items]	'		'		'
Derivatives hedging instruments, assets	50,644,000	[3]	'		55,447,000	[3]
Derivatives Not Designated As Hedging Instruments [Member] | Interest Rate Swaps For Customers [Member] | Other Liabilities [Member]	'		'		'
Derivative [Line Items]	'		'		'
Derivatives hedging instruments, liabilities	51,000,000	[3]	'		54,688,000	[3]
Derivatives Not Designated As Hedging Instruments [Member] | Futures Contracts [Member]	'		'		'
Derivative [Line Items]	'		'		'
Derivatives instruments, Noninterest income (expense)	0		1,000		'
Derivatives Not Designated As Hedging Instruments [Member] | Total Return Swap [Member]	'		'		'
Derivative [Line Items]	'		'		'
Total derivatives, Notional amount	1,159,686,000		'		1,159,686,000
Derivatives instruments, Noninterest income (expense)	-7,427,000		-5,558,000		'
Derivatives Not Designated As Hedging Instruments [Member] | Total Return Swap [Member] | Other Assets [Member]	'		'		'
Derivative [Line Items]	'		'		'
Derivatives hedging instruments, assets	0		'		0
Derivatives Not Designated As Hedging Instruments [Member] | Total Return Swap [Member] | Other Liabilities [Member]	'		'		'
Derivative [Line Items]	'		'		'
Derivatives hedging instruments, liabilities	$5,399,000		'		$4,062,000
[1]	Amounts for the three months ended MarchB 31 2014 and 2013 of $0.4 million and $1.6 million, respectively, are the amounts of reclassification to earnings from AOCI presented in Note 8.
[2]	Amounts recognized in OCI and reclassified from accumulated OCI (bAOCIb) represent the effective portion of the derivative gain (loss).
[3]	Amounts include both the customer swaps and the offsetting derivative contracts.

Debt_And_Shareholders_Equity_N

Debt And Shareholders' Equity (Narrative) (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Debt And Shareholders' Equity [Line Items]	'	'
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	$71,386,000	$36,040,000
Debt [Abstract]	'	'
Medium-term Notes	210,800,000	'
Debt Instrument, Maturity Date	1-Nov-19	'
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	-24,747,000	3,214,000
Long-Term Senior Notes [Member]	'	'
Debt [Abstract]	'	'
Repayments of notes	$125,000,000	'
Minimum [Member]	'	'
Debt [Abstract]	'	'
Interest rate on senior notes	2.55%	'
Maximum [Member]	'	'
Debt [Abstract]	'	'
Interest rate on senior notes	5.50%	'

Debt_And_Shareholders_Equity_S

Debt And Shareholders' Equity (Schedule Of Changes In Accumulated Other Comprehensive Income (Loss)) (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Debt And Shareholders' Equity [Line Items]	'	'
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Tax	$38,636	$23,853
Interest income expense, net, after tax	76,190	88,324
Income Tax Expense (Benefit)	56,121	60,634
Interest Income (Expense), Net	416,465	418,115
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net	27	10,117
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	71,386	36,040
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	-24,747	3,214
Beginning balance	-192,101	-446,157
Other comprehensive income (loss)	46,639	39,254
Ending balance	-145,462	-406,903
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Tax	77	-650
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Tax	0	0
Other Comprehensive Income (Loss), Tax	38,713	23,203
Accumulated Net Unrealized Investment Gain (Loss) [Member]	'	'
Debt And Shareholders' Equity [Line Items]	'	'
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	71,066	36,042
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	-24,537	4,171
Beginning balance	-167,032	-397,616
Other comprehensive income (loss)	46,529	40,213
Ending balance	-120,503	-357,403
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]	'	'
Debt And Shareholders' Equity [Line Items]	'	'
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	320	-2
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	-210	-957
Beginning balance	-217	1,794
Other comprehensive income (loss)	110	-959
Ending balance	-107	835
Accumulated Defined Benefit Plans Adjustment [Member]	'	'
Debt And Shareholders' Equity [Line Items]	'	'
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	0	0
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	0	0
Beginning balance	-24,852	-50,335
Other comprehensive income (loss)	0	0
Ending balance	-24,852	-50,335
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Net Unrealized Investment Gain (Loss) [Member]	'	'
Debt And Shareholders' Equity [Line Items]	'	'
Gain (Loss) on Investments, Excluding Other than Temporary Impairments	30,914	3,299
Interest income expense, net, after tax	-17	-5,999
Income Tax Expense (Benefit)	-10	-3,715
Other than temporary impairment losses investments accretion of noncreidt portion held to maturity securities, after tax	24,537	-4,171
Other than temporary impairment losses investments accretion of noncredit portion held to maturity securities, tax	196	135
Other than Temporary Impairment Losses, Investments, Accretion of Noncredit Portion, Held-to-maturity Securities, before Tax	-482	-344
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net	-27	-9,714
Interest Rate Contract [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]	'	'
Debt And Shareholders' Equity [Line Items]	'	'
Interest income expense, net, after tax	210	957
Income Tax Expense (Benefit)	141	648
Interest Income (Expense), Net	351	1,605
Fixed income securities gain loss [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Net Unrealized Investment Gain (Loss) [Member]	'	'
Debt And Shareholders' Equity [Line Items]	'	'
Interest income expense, net, after tax	24,840	2,037
Income Tax Expense (Benefit)	$6,074	$1,262

Income_Taxes_Details

Income Taxes (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Income Tax Disclosure [Abstract]	'	'
Net deferred tax assets	$187	$304

Fair_Value_Narrative_Details

Fair Value (Narrative) (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Derivatives, Fair Value [Line Items]	'	'	'
Fair Value Level Transfers Among Levels 1, 2, and 3	0	0	'
Other noninterest-bearing investments valued under the cost method	$50,400,000	'	$53,600,000
Federal Home Loan Bank Stock and Federal Reserve Bank Stock	243,100,000	'	248,400,000
Net gains on sale of OREO properties	-1,607,000	-1,977,000	'
Principal amount of other real estate owned property sold	10,000,000	22,000,000	'
Private equity investments prohibited by Volker rule	59,000,000	'	'
OREO Properties [Member]	'	'	'
Derivatives, Fair Value [Line Items]	'	'	'
Net gains on sale of OREO properties	1,000,000	3,900,000	'
Impairment of OREO properties	-200,000	-100,000	'
Level 2 [Member]	'	'	'
Derivatives, Fair Value [Line Items]	'	'	'
Fair value of AFS securities	2,484,809,000	'	2,137,259,000
Level 3 [Member]	'	'	'
Derivatives, Fair Value [Line Items]	'	'	'
Fair value of AFS securities	706,991,000	'	1,304,877,000
Third Party Pricing Service [Member] | Level 2 [Member]	'	'	'
Derivatives, Fair Value [Line Items]	'	'	'
Fair value of AFS securities	0	'	'
Third Party Pricing Service [Member] | Level 3 [Member]	'	'	'
Derivatives, Fair Value [Line Items]	'	'	'
Fair value of AFS securities	$0	'	'

Fair_Value_Schedule_Of_Assets_

Fair Value (Schedule Of Assets And Liabilities Measured At Fair Value By Class On A Recurring Basis) (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'	'
Fair Value Level Transfers Among Levels 1, 2, and 3	0	0	'
Trading account	$56,172	'	$34,559
Level 1 [Member]	'	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'	'
Investments, Fair Value Disclosure	231,405	'	259,750
Total assets	326,420	'	355,548
Securities sold, not yet purchased	1,340	'	73,606
Total liabilities	95,358	'	168,433
Level 1 [Member] | Mutual Funds And Other [Member]	'	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'	'
Investments, Fair Value Disclosure	231,405	'	259,750
Level 1 [Member] | Type of Deferred Compensation, All Types [Domain]	'	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'	'
Other assets	88,606	'	86,184
Other liabilities	88,606	'	86,184
Level 1 [Member] | Available-for-sale Securities [Member] | U.S. Treasury, Agencies And Corporations [Member]	'	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'	'
Investments, Fair Value Disclosure	'	'	0
Level 1 [Member] | Derivatives [Member]	'	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'	'
Other assets	6,409	'	9,614
Other liabilities	5,412	'	8,643
Level 1 [Member] | Derivatives [Member] | Foreign Currency Exchange Contracts [Member]	'	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'	'
Other assets	6,409	'	9,614
Other liabilities	5,412	'	8,643
Level 2 [Member]	'	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'	'
Investments, Fair Value Disclosure	2,484,809	'	2,137,259
Trading account	56,172	'	34,559
Total assets	3,066,419	'	2,699,137
Securities sold, not yet purchased	'	'	'
Total liabilities	51,778	'	55,692
Level 2 [Member] | Mutual Funds And Other [Member]	'	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'	'
Investments, Fair Value Disclosure	20,657	'	20,453
Level 2 [Member] | Bank-owned life insurance [Member]	'	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'	'
Other noninterest-bearing investments	469,241	'	466,428
Level 2 [Member] | Private Equity [Member]	'	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'	'
Other noninterest-bearing investments	4,923	'	4,822
Level 2 [Member] | Available-for-sale Securities [Member] | U.S. Treasury, Agencies And Corporations [Member]	'	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'	'
Investments, Fair Value Disclosure	2,252,014	'	2,059,105
Level 2 [Member] | Available-for-sale Securities [Member] | Municipal Securities [Member]	'	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'	'
Investments, Fair Value Disclosure	141,222	'	55,602
Level 2 [Member] | Asset-Backed Securities [Member] | Trust Preferred - Banks And Insurance [Member]	'	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'	'
Investments, Fair Value Disclosure	69,194	'	0
Level 2 [Member] | Asset-Backed Securities [Member] | Other (Including ABS CDOs) [Member]	'	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'	'
Investments, Fair Value Disclosure	'	'	2,099
Level 2 [Member] | Asset-Backed Securities [Member] | Other [Member]	'	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'	'
Investments, Fair Value Disclosure	1,722	'	'
Level 2 [Member] | Derivatives [Member]	'	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'	'
Other assets	51,274	'	56,069
Other liabilities	51,778	'	55,692
Level 2 [Member] | Derivatives [Member] | Interest Rate Related And Other [Member]	'	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'	'
Other assets	630	'	622
Other liabilities	778	'	1,004
Level 2 [Member] | Derivatives [Member] | Interest Rate Swaps For Customers [Member]	'	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'	'
Other assets	50,644	'	55,447
Other liabilities	51,000	'	54,688
Level 3 [Member]	'	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'	'
Investments, Fair Value Disclosure	706,991	'	1,304,877
Total assets	799,250	'	1,396,139
Other liabilities	233	'	241
Total liabilities	5,632	'	4,303
Level 3 [Member] | Private Equity [Member]	'	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'	'
Other noninterest-bearing investments	81,052	'	82,410
Level 3 [Member] | Interest-Only-Strip [Member]	'	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'	'
Other assets	11,207	'	8,852
Level 3 [Member] | Available-for-sale Securities [Member] | Municipal Securities [Member]	'	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'	'
Investments, Fair Value Disclosure	10,184	'	10,662
Level 3 [Member] | Asset-Backed Securities [Member] | Trust Preferred - Banks And Insurance [Member]	'	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'	'
Investments, Fair Value Disclosure	690,217	'	1,238,820
Level 3 [Member] | Asset-Backed Securities [Member] | Trust Preferred - Real Estate Investment Trusts [Member]	'	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'	'
Investments, Fair Value Disclosure	0	'	22,996
Level 3 [Member] | Asset-Backed Securities [Member] | Auction Rate Securities [Member]	'	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'	'
Investments, Fair Value Disclosure	6,560	'	6,599
Level 3 [Member] | Asset-Backed Securities [Member] | Other (Including ABS CDOs) [Member]	'	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'	'
Investments, Fair Value Disclosure	'	'	25,800
Level 3 [Member] | Asset-Backed Securities [Member] | Other [Member]	'	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'	'
Investments, Fair Value Disclosure	30	'	25,800
Level 3 [Member] | Derivatives [Member]	'	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'	'
Other liabilities	5,399	'	4,062
Level 3 [Member] | Derivatives [Member] | Total Return Swap [Member]	'	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'	'
Other liabilities	5,399	'	4,062
Estimated Fair Value [Member]	'	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'	'
Investments, Fair Value Disclosure	3,423,205	'	3,701,886
Trading account	56,172	'	34,559
Total assets	4,192,089	'	4,450,824
Securities sold, not yet purchased	1,340	'	73,606
Other liabilities	233	'	241
Total liabilities	152,768	'	228,428
Estimated Fair Value [Member] | Mutual Funds And Other [Member]	'	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'	'
Investments, Fair Value Disclosure	252,062	'	280,203
Estimated Fair Value [Member] | Bank-owned life insurance [Member]	'	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'	'
Other noninterest-bearing investments	469,241	'	466,428
Estimated Fair Value [Member] | Private Equity [Member]	'	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'	'
Other noninterest-bearing investments	85,975	'	87,232
Estimated Fair Value [Member] | Interest-Only-Strip [Member]	'	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'	'
Other assets	11,207	'	8,852
Estimated Fair Value [Member] | Type of Deferred Compensation, All Types [Domain]	'	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'	'
Other assets	88,606	'	86,184
Other liabilities	88,606	'	86,184
Estimated Fair Value [Member] | Available-for-sale Securities [Member] | U.S. Treasury, Agencies And Corporations [Member]	'	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'	'
Investments, Fair Value Disclosure	2,252,014	'	2,059,105
Estimated Fair Value [Member] | Available-for-sale Securities [Member] | Municipal Securities [Member]	'	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'	'
Investments, Fair Value Disclosure	151,406	'	66,264
Estimated Fair Value [Member] | Asset-Backed Securities [Member] | Trust Preferred - Banks And Insurance [Member]	'	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'	'
Investments, Fair Value Disclosure	759,411	'	1,238,820
Estimated Fair Value [Member] | Asset-Backed Securities [Member] | Trust Preferred - Real Estate Investment Trusts [Member]	'	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'	'
Investments, Fair Value Disclosure	0	'	22,996
Estimated Fair Value [Member] | Asset-Backed Securities [Member] | Auction Rate Securities [Member]	'	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'	'
Investments, Fair Value Disclosure	6,560	'	6,599
Estimated Fair Value [Member] | Asset-Backed Securities [Member] | Other [Member]	'	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'	'
Investments, Fair Value Disclosure	1,752	'	27,899
Estimated Fair Value [Member] | Derivatives [Member]	'	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'	'
Other assets	57,683	'	65,683
Other liabilities	62,589	'	68,397
Estimated Fair Value [Member] | Derivatives [Member] | Interest Rate Related And Other [Member]	'	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'	'
Other assets	630	'	622
Other liabilities	778	'	1,004
Estimated Fair Value [Member] | Derivatives [Member] | Interest Rate Swaps For Customers [Member]	'	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'	'
Other assets	50,644	'	55,447
Other liabilities	51,000	'	54,688
Estimated Fair Value [Member] | Derivatives [Member] | Foreign Currency Exchange Contracts [Member]	'	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'	'
Other assets	6,409	'	9,614
Other liabilities	5,412	'	8,643
Estimated Fair Value [Member] | Derivatives [Member] | Total Return Swap [Member]	'	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'	'
Other liabilities	$5,399	'	$4,062

Fair_Value_Schedule_Of_Key_Mod

Fair Value (Schedule Of Key Model Inputs And Assumptions Used To Fair Value Certain Asset-Backed Securities) (Details)	3 Months Ended	12 Months Ended
	Mar. 31, 2014	Dec. 31, 2013
Trust Preferred - Predominantly Insurance [Member]	'	'
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]	'	'
Assumption for Fair Value of Assets or Liabilities that relate to Transferor's Continuing Involvement, Prepayment Speed	'	5.00%
Trust Preferred Real Estate Investment Trusts [Member]	'	'
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]	'	'
Assumption for Fair Value of Assets or Liabilities that relate to Transferor's Continuing Involvement, Prepayment Speed	'	0.00%
Asset-Backed Securities [Member] | Trust Preferred - Predominantly Banks [Member]	'	'
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]	'	'
Asset-backed securities, Loss severity	100.00%	100.00%
Asset-Backed Securities [Member] | Trust Preferred - Predominantly Insurance [Member]	'	'
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]	'	'
Asset-backed securities, Loss severity	'	100.00%
Minimum [Member] | Asset-Backed Securities [Member] | Trust Preferred Securities - Real Estate Investment Trusts [Member]	'	'
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]	'	'
Asset-backed securities, Loss severity	'	60.00%
Maximum [Member] | Asset-Backed Securities [Member] | Trust Preferred Securities - Real Estate Investment Trusts [Member]	'	'
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]	'	'
Asset-backed securities, Loss severity	'	100.00%
Constant Default Rate Year 1 [Member] | Minimum [Member] | Trust Preferred - Predominantly Banks [Member]	'	'
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]	'	'
Asset-backed securities, Constant default rate	0.30%	0.30%
Constant Default Rate Year 1 [Member] | Minimum [Member] | Trust Preferred - Predominantly Insurance [Member]	'	'
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]	'	'
Asset-backed securities, Constant default rate	'	0.38%
Constant Default Rate Year 1 [Member] | Minimum [Member] | Trust Preferred Real Estate Investment Trusts [Member]	'	'
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]	'	'
Asset-backed securities, Constant default rate	'	4.10%
Constant Default Rate Year 1 [Member] | Maximum [Member] | Trust Preferred - Predominantly Banks [Member]	'	'
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]	'	'
Asset-backed securities, Constant default rate	2.17%	1.94%
Constant Default Rate Year 1 [Member] | Maximum [Member] | Trust Preferred - Predominantly Insurance [Member]	'	'
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]	'	'
Asset-backed securities, Constant default rate	'	1.03%
Constant Default Rate Year 1 [Member] | Maximum [Member] | Trust Preferred Real Estate Investment Trusts [Member]	'	'
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]	'	'
Asset-backed securities, Constant default rate	'	10.60%
Constant Default Rate Year 2 to 3 [Member] | Minimum [Member] | Trust Preferred Real Estate Investment Trusts [Member]	'	'
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]	'	'
Asset-backed securities, Constant default rate	'	4.60%
Constant Default Rate Year 2 to 3 [Member] | Maximum [Member] | Trust Preferred Real Estate Investment Trusts [Member]	'	'
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]	'	'
Asset-backed securities, Constant default rate	'	5.50%
Constant Default Rate Year 2 to 5 [Member] | Minimum [Member] | Trust Preferred - Predominantly Banks [Member]	'	'
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]	'	'
Asset-backed securities, Constant default rate	0.48%	0.49%
Constant Default Rate Year 2 to 5 [Member] | Minimum [Member] | Trust Preferred - Predominantly Insurance [Member]	'	'
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]	'	'
Asset-backed securities, Constant default rate	'	0.53%
Constant Default Rate Year 2 to 5 [Member] | Maximum [Member] | Trust Preferred - Predominantly Banks [Member]	'	'
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]	'	'
Asset-backed securities, Constant default rate	0.82%	1.14%
Constant Default Rate Year 2 to 5 [Member] | Maximum [Member] | Trust Preferred - Predominantly Insurance [Member]	'	'
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]	'	'
Asset-backed securities, Constant default rate	'	0.89%
Constant Default Rate Year 4 to 6 [Member] | Trust Preferred Real Estate Investment Trusts [Member]	'	'
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]	'	'
Asset-backed securities, Constant default rate	'	1.00%
Constant Default Rate Year 6 to Maturity [Member] | Minimum [Member] | Trust Preferred - Predominantly Banks [Member]	'	'
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]	'	'
Asset-backed securities, Constant default rate	0.59%	0.58%
Constant Default Rate Year 6 to Maturity [Member] | Minimum [Member] | Trust Preferred - Predominantly Insurance [Member]	'	'
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]	'	'
Asset-backed securities, Constant default rate	'	0.50%
Constant Default Rate Year 6 to Maturity [Member] | Maximum [Member] | Trust Preferred - Predominantly Banks [Member]	'	'
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]	'	'
Asset-backed securities, Constant default rate	0.65%	0.65%
Constant Default Rate Year 6 to Maturity [Member] | Maximum [Member] | Trust Preferred - Predominantly Insurance [Member]	'	'
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]	'	'
Asset-backed securities, Constant default rate	'	0.55%
Constant Default Rate Until 2016 [Member] | Minimum [Member] | Trust Preferred - Predominantly Banks [Member]	'	'
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]	'	'
Assumption for Fair Value of Assets or Liabilities that relate to Transferor's Continuing Involvement, Prepayment Speed	5.50%	5.50%
Constant Default Rate Until 2016 [Member] | Maximum [Member] | Trust Preferred - Predominantly Banks [Member]	'	'
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]	'	'
Assumption for Fair Value of Assets or Liabilities that relate to Transferor's Continuing Involvement, Prepayment Speed	23.30%	20.73%
Constant Default Rate 2016 to Maturity [Member] | Trust Preferred - Predominantly Banks [Member]	'	'
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]	'	'
Assumption for Fair Value of Assets or Liabilities that relate to Transferor's Continuing Involvement, Prepayment Speed	3.00%	3.00%

Fair_Value_Schedule_Of_Assets_1

Fair Value (Schedule Of Assets And Liabilities Measured At Fair Value By Class On A Recurring Basis Using Level 3 Inputs) (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Total net gains (losses) included in, Other noninterest expense	$72,710	$78,097
Municipal Securities [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Fair value of assets, Beginning balance	10,662	16,551
Total net gains (losses) included in, Accretion of purchase discount on securities available-for-sale	10	21
Total net gains (losses) included in, Fixed income securities gains (losses), net	16	21
Total net gains (losses) included in, Other comprehensive income (loss)	-274	725
Total net gains (losses) included in, Redemptions and paydowns	-230	-275
Fair value of assets, Ending balance	10,184	17,043
Trust Preferred - Banks And Insurance [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Fair value of assets, Beginning balance	1,238,820	949,271
Total net gains (losses) included in, Accretion of purchase discount on securities available-for-sale	720	815
Total net gains (losses) included in, Fixed income securities gains (losses), net	18,582	3,226
Total net gains (losses) included in, Net impairment losses on investment securities	'	-9,714
Total net gains (losses) included in, Other comprehensive income (loss)	94,462	78,650
Total net gains (losses) included in, Sales	546,388	'
Total net gains (losses) included in, Redemptions and paydowns	-46,786	-19,146
Fair value of assets, Ending balance	690,217	1,003,102
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers out of Level 3	-69,193	'
Trust Preferred Securities - Real Estate Investment Trusts [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Fair value of assets, Beginning balance	22,996	16,403
Total net gains (losses) included in, Accretion of purchase discount on securities available-for-sale	'	63
Total net gains (losses) included in, Fixed income securities gains (losses), net	1,399	'
Total net gains (losses) included in, Other comprehensive income (loss)	'	840
Total net gains (losses) included in, Sales	24,395	'
Fair value of assets, Ending balance	0	17,306
Auction Rate Securities [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Fair value of assets, Beginning balance	6,599	6,515
Total net gains (losses) included in, Accretion of purchase discount on securities available-for-sale	1	1
Total net gains (losses) included in, Fixed income securities gains (losses), net	'	'
Total net gains (losses) included in, Other comprehensive income (loss)	-40	8
Total net gains (losses) included in, Redemptions and paydowns	'	'
Fair value of assets, Ending balance	6,560	6,524
Other Asset-Backed [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Fair value of assets, Beginning balance	25,800	15,160
Total net gains (losses) included in, Accretion of purchase discount on securities available-for-sale	'	5
Total net gains (losses) included in, Fixed income securities gains (losses), net	10,917	30
Total net gains (losses) included in, Net impairment losses on investment securities	'	'
Total net gains (losses) included in, Other comprehensive income (loss)	-15	2,651
Total net gains (losses) included in, Sales	36,669	'
Total net gains (losses) included in, Redemptions and paydowns	-3	-2,453
Fair value of assets, Ending balance	30	15,393
Private Equity Investments [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Fair value of assets, Beginning balance	82,410	64,223
Total net gains (losses) included in, Dividends and other investment income	-1,695	2,989
Total net gains (losses) included in, Equity securities gains, net	'	2,399
Total net gains (losses) included in, Purchases	1,356	959
Total net gains (losses) included in, Sales	-824	-733
Total net gains (losses) included in, Redemptions and paydowns	-195	-131
Fair value of assets, Ending balance	81,052	69,706
Servicing Contracts [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Fair value of liabilities, Beginning balance	8,852	8,334
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Noninterest Income	481	119
Total net gains (losses) included in, Purchases	2,077	'
Total net gains (losses) included in, Redemptions and paydowns	-203	-201
Fair value of liabilities, Ending balance	11,207	8,252
Derivatives [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Fair value of liabilities, Beginning balance	-4,303	-5,251
Derivative, Gain (Loss) on Derivative, Net	-7,427	-5,558
Total net gains (losses) included in, Other noninterest expense	8	-71
Total net gains (losses) included, in Redemptions and paydowns, Liabilities	6,090	-5,810
Fair value of liabilities, Ending balance	($5,632)	($5,070)

Fair_Value_Schedule_Of_Realize

Fair Value (Schedule Of Realized Gains (Losses) Using Level 3 Inputs) (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Dividends and Other Investment Income (Loss) [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Realized gains (losses) from Level 3 inputs	$34	$15
Fixed Income Securities Gains (Losses), Net [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Realized gains (losses) from Level 3 inputs	30,914	3,277
US States and Political Subdivisions Debt Securities [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Fair Value Assets Measured On Recurring Basis And Gain Loss Included In Fixed Income Securities Gains (Losses), Net	16	21
Fair Value, Assets Measured On Recurring Basis, And Gain (Loss) Included In Accretion Of Purchase Discount On Securities Available-For-Sale	10	21
Trust Preferred Securities Real Estate Investment Trusts [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Fair Value Assets Measured On Recurring Basis And Gain Loss Included In Fixed Income Securities Gains (Losses), Net	1,399	'
Fair Value, Assets Measured On Recurring Basis, And Gain (Loss) Included In Accretion Of Purchase Discount On Securities Available-For-Sale	'	$63

Fair_Value_Summary_of_Quantita

Fair Value Summary of Quantitative Information Relating to the Principal Valuation Techniques and Significant Unobservable Inputs for Level 3 (Details) (USD $)	3 Months Ended		12 Months Ended
	Mar. 31, 2014		Dec. 31, 2013
Trust Preferred - Real Estate Investment Trusts [Member]	'		'
Summary of Quantitative Information Relating to the Principal Valuation Techniques and Significant Unobservable Inputs for Level 3 [Line Items]	'		'
Assumption for Fair Value of Assets or Liabilities that relate to Transferor's Continuing Involvement, Prepayment Speed	'		0.00%
Trust Preferred - Real Estate Investment Trusts [Member] | Constant Default Rate Year 4 to 6 [Member]	'		'
Summary of Quantitative Information Relating to the Principal Valuation Techniques and Significant Unobservable Inputs for Level 3 [Line Items]	'		'
Assumption For Fair Value Of Assets Or Liabilities Constant Default Rate	'		1.00%
Trust Preferred - Real Estate Investment Trusts [Member] | Constant Default Rate Years 7 to Maturity [Member]	'		'
Summary of Quantitative Information Relating to the Principal Valuation Techniques and Significant Unobservable Inputs for Level 3 [Line Items]	'		'
Assumption For Fair Value Of Assets Or Liabilities Constant Default Rate	'		0.50%
Trust Preferred - Predominantly Insurance [Member]	'		'
Summary of Quantitative Information Relating to the Principal Valuation Techniques and Significant Unobservable Inputs for Level 3 [Line Items]	'		'
Assumption for Fair Value of Assets or Liabilities that relate to Transferor's Continuing Involvement, Prepayment Speed	'		5.00%
Trust Preferred - Predominantly Banks [Member] | Constant Default Rate 2016 to Maturity [Member]	'		'
Summary of Quantitative Information Relating to the Principal Valuation Techniques and Significant Unobservable Inputs for Level 3 [Line Items]	'		'
Assumption for Fair Value of Assets or Liabilities that relate to Transferor's Continuing Involvement, Prepayment Speed	3.00%		3.00%
Minimum [Member] | Other Predominantly ABS CODs [Member]	'		'
Summary of Quantitative Information Relating to the Principal Valuation Techniques and Significant Unobservable Inputs for Level 3 [Line Items]	'		'
Assumption For Fair Value Of Assets Or Liabilities Constant Default Rate	'		0.01%
Discount rate range of LIBOR utilized for fair value purposes	'		9.00%
Minimum [Member] | Trust Preferred - Real Estate Investment Trusts [Member]	'		'
Summary of Quantitative Information Relating to the Principal Valuation Techniques and Significant Unobservable Inputs for Level 3 [Line Items]	'		'
Discount rate range of LIBOR utilized for fair value purposes	'		5.50%
Minimum [Member] | Trust Preferred - Real Estate Investment Trusts [Member] | Constant Default Rate Year 1 [Member]	'		'
Summary of Quantitative Information Relating to the Principal Valuation Techniques and Significant Unobservable Inputs for Level 3 [Line Items]	'		'
Assumption For Fair Value Of Assets Or Liabilities Constant Default Rate	'		4.10%
Minimum [Member] | Trust Preferred - Real Estate Investment Trusts [Member] | Constant Default Rate Year 2 to 3 [Member]	'		'
Summary of Quantitative Information Relating to the Principal Valuation Techniques and Significant Unobservable Inputs for Level 3 [Line Items]	'		'
Assumption For Fair Value Of Assets Or Liabilities Constant Default Rate	'		4.60%
Minimum [Member] | Trust Preferred - Individual Banks [Member]	'		'
Summary of Quantitative Information Relating to the Principal Valuation Techniques and Significant Unobservable Inputs for Level 3 [Line Items]	'		'
Significant Unobservable Inputs, Yield Rate	'		6.60%
Significant Unobservable Inputs, Price Rate	'		81.25%
Minimum [Member] | Trust Preferred - Predominantly Insurance [Member]	'		'
Summary of Quantitative Information Relating to the Principal Valuation Techniques and Significant Unobservable Inputs for Level 3 [Line Items]	'		'
Significant Unobservable Inputs, Loss Given Deferral Rate	'		2.18%
Discount rate range of LIBOR utilized for fair value purposes	'		3.72%
Minimum [Member] | Trust Preferred - Predominantly Insurance [Member] | Constant Default Rate Year 1 [Member]	'		'
Summary of Quantitative Information Relating to the Principal Valuation Techniques and Significant Unobservable Inputs for Level 3 [Line Items]	'		'
Assumption For Fair Value Of Assets Or Liabilities Constant Default Rate	'		0.38%
Minimum [Member] | Trust Preferred - Predominantly Insurance [Member] | Constant Default Rate Year 2 to 5 [Member]	'		'
Summary of Quantitative Information Relating to the Principal Valuation Techniques and Significant Unobservable Inputs for Level 3 [Line Items]	'		'
Assumption For Fair Value Of Assets Or Liabilities Constant Default Rate	'		0.53%
Minimum [Member] | Trust Preferred - Predominantly Insurance [Member] | Constant Default Rate Year 6 to Maturity [Member]	'		'
Summary of Quantitative Information Relating to the Principal Valuation Techniques and Significant Unobservable Inputs for Level 3 [Line Items]	'		'
Assumption For Fair Value Of Assets Or Liabilities Constant Default Rate	'		0.50%
Minimum [Member] | Trust Preferred - Predominantly Banks [Member]	'		'
Summary of Quantitative Information Relating to the Principal Valuation Techniques and Significant Unobservable Inputs for Level 3 [Line Items]	'		'
Significant Unobservable Inputs, Loss Given Deferral Rate	13.56%		14.39%
Discount rate range of LIBOR utilized for fair value purposes	5.30%		5.60%
Minimum [Member] | Trust Preferred - Predominantly Banks [Member] | Constant Default Rate Until 2016 [Member]	'		'
Summary of Quantitative Information Relating to the Principal Valuation Techniques and Significant Unobservable Inputs for Level 3 [Line Items]	'		'
Assumption for Fair Value of Assets or Liabilities that relate to Transferor's Continuing Involvement, Prepayment Speed	5.50%		5.50%
Minimum [Member] | Trust Preferred - Predominantly Banks [Member] | Constant Default Rate Year 1 [Member]	'		'
Summary of Quantitative Information Relating to the Principal Valuation Techniques and Significant Unobservable Inputs for Level 3 [Line Items]	'		'
Assumption For Fair Value Of Assets Or Liabilities Constant Default Rate	0.30%		0.30%
Minimum [Member] | Trust Preferred - Predominantly Banks [Member] | Constant Default Rate Year 2 to 5 [Member]	'		'
Summary of Quantitative Information Relating to the Principal Valuation Techniques and Significant Unobservable Inputs for Level 3 [Line Items]	'		'
Assumption For Fair Value Of Assets Or Liabilities Constant Default Rate	0.48%		0.49%
Minimum [Member] | Trust Preferred - Predominantly Banks [Member] | Constant Default Rate Year 6 to Maturity [Member]	'		'
Summary of Quantitative Information Relating to the Principal Valuation Techniques and Significant Unobservable Inputs for Level 3 [Line Items]	'		'
Assumption For Fair Value Of Assets Or Liabilities Constant Default Rate	0.59%		0.58%
Maximum [Member] | Other Predominantly ABS CODs [Member]	'		'
Summary of Quantitative Information Relating to the Principal Valuation Techniques and Significant Unobservable Inputs for Level 3 [Line Items]	'		'
Assumption For Fair Value Of Assets Or Liabilities Constant Default Rate	'		100.00%
Discount rate range of LIBOR utilized for fair value purposes	'		22.00%
Maximum [Member] | Trust Preferred - Real Estate Investment Trusts [Member]	'		'
Summary of Quantitative Information Relating to the Principal Valuation Techniques and Significant Unobservable Inputs for Level 3 [Line Items]	'		'
Discount rate range of LIBOR utilized for fair value purposes	'		15.00%
Maximum [Member] | Trust Preferred - Real Estate Investment Trusts [Member] | Constant Default Rate Year 1 [Member]	'		'
Summary of Quantitative Information Relating to the Principal Valuation Techniques and Significant Unobservable Inputs for Level 3 [Line Items]	'		'
Assumption For Fair Value Of Assets Or Liabilities Constant Default Rate	'		10.60%
Maximum [Member] | Trust Preferred - Real Estate Investment Trusts [Member] | Constant Default Rate Year 2 to 3 [Member]	'		'
Summary of Quantitative Information Relating to the Principal Valuation Techniques and Significant Unobservable Inputs for Level 3 [Line Items]	'		'
Assumption For Fair Value Of Assets Or Liabilities Constant Default Rate	'		5.50%
Maximum [Member] | Trust Preferred - Individual Banks [Member]	'		'
Summary of Quantitative Information Relating to the Principal Valuation Techniques and Significant Unobservable Inputs for Level 3 [Line Items]	'		'
Significant Unobservable Inputs, Yield Rate	'		7.80%
Significant Unobservable Inputs, Price Rate	'		109.60%
Maximum [Member] | Trust Preferred - Predominantly Insurance [Member]	'		'
Summary of Quantitative Information Relating to the Principal Valuation Techniques and Significant Unobservable Inputs for Level 3 [Line Items]	'		'
Significant Unobservable Inputs, Loss Given Deferral Rate	'		30.13%
Discount rate range of LIBOR utilized for fair value purposes	'		6.49%
Maximum [Member] | Trust Preferred - Predominantly Insurance [Member] | Constant Default Rate Year 1 [Member]	'		'
Summary of Quantitative Information Relating to the Principal Valuation Techniques and Significant Unobservable Inputs for Level 3 [Line Items]	'		'
Assumption For Fair Value Of Assets Or Liabilities Constant Default Rate	'		1.03%
Maximum [Member] | Trust Preferred - Predominantly Insurance [Member] | Constant Default Rate Year 2 to 5 [Member]	'		'
Summary of Quantitative Information Relating to the Principal Valuation Techniques and Significant Unobservable Inputs for Level 3 [Line Items]	'		'
Assumption For Fair Value Of Assets Or Liabilities Constant Default Rate	'		0.89%
Maximum [Member] | Trust Preferred - Predominantly Insurance [Member] | Constant Default Rate Year 6 to Maturity [Member]	'		'
Summary of Quantitative Information Relating to the Principal Valuation Techniques and Significant Unobservable Inputs for Level 3 [Line Items]	'		'
Assumption For Fair Value Of Assets Or Liabilities Constant Default Rate	'		0.55%
Maximum [Member] | Trust Preferred - Predominantly Banks [Member]	'		'
Summary of Quantitative Information Relating to the Principal Valuation Techniques and Significant Unobservable Inputs for Level 3 [Line Items]	'		'
Significant Unobservable Inputs, Loss Given Deferral Rate	100.00%		100.00%
Discount rate range of LIBOR utilized for fair value purposes	5.60%		7.70%
Maximum [Member] | Trust Preferred - Predominantly Banks [Member] | Constant Default Rate Until 2016 [Member]	'		'
Summary of Quantitative Information Relating to the Principal Valuation Techniques and Significant Unobservable Inputs for Level 3 [Line Items]	'		'
Assumption for Fair Value of Assets or Liabilities that relate to Transferor's Continuing Involvement, Prepayment Speed	23.30%		20.73%
Maximum [Member] | Trust Preferred - Predominantly Banks [Member] | Constant Default Rate Year 1 [Member]	'		'
Summary of Quantitative Information Relating to the Principal Valuation Techniques and Significant Unobservable Inputs for Level 3 [Line Items]	'		'
Assumption For Fair Value Of Assets Or Liabilities Constant Default Rate	2.17%		1.94%
Maximum [Member] | Trust Preferred - Predominantly Banks [Member] | Constant Default Rate Year 2 to 5 [Member]	'		'
Summary of Quantitative Information Relating to the Principal Valuation Techniques and Significant Unobservable Inputs for Level 3 [Line Items]	'		'
Assumption For Fair Value Of Assets Or Liabilities Constant Default Rate	0.82%		1.14%
Maximum [Member] | Trust Preferred - Predominantly Banks [Member] | Constant Default Rate Year 6 to Maturity [Member]	'		'
Summary of Quantitative Information Relating to the Principal Valuation Techniques and Significant Unobservable Inputs for Level 3 [Line Items]	'		'
Assumption For Fair Value Of Assets Or Liabilities Constant Default Rate	0.65%		0.65%
Asset-Backed Securities [Member] | Trust Preferred - Predominantly Insurance [Member]	'		'
Summary of Quantitative Information Relating to the Principal Valuation Techniques and Significant Unobservable Inputs for Level 3 [Line Items]	'		'
Assumption for Fair Value of Assets or Liabilities that relate to Transferor's Continuing Involvement, Static Pool Losses	'		100.00%
Asset-Backed Securities [Member] | Trust Preferred - Predominantly Banks [Member]	'		'
Summary of Quantitative Information Relating to the Principal Valuation Techniques and Significant Unobservable Inputs for Level 3 [Line Items]	'		'
Assumption for Fair Value of Assets or Liabilities that relate to Transferor's Continuing Involvement, Static Pool Losses	100.00%		100.00%
Asset-Backed Securities [Member] | Minimum [Member] | Other Predominantly ABS CODs [Member]	'		'
Summary of Quantitative Information Relating to the Principal Valuation Techniques and Significant Unobservable Inputs for Level 3 [Line Items]	'		'
Assumption for Fair Value of Assets or Liabilities that relate to Transferor's Continuing Involvement, Static Pool Losses	'		70.00%
Asset-Backed Securities [Member] | Minimum [Member] | Trust Preferred Securities - Real Estate Investment Trusts [Member]	'		'
Summary of Quantitative Information Relating to the Principal Valuation Techniques and Significant Unobservable Inputs for Level 3 [Line Items]	'		'
Assumption for Fair Value of Assets or Liabilities that relate to Transferor's Continuing Involvement, Static Pool Losses	'		60.00%
Asset-Backed Securities [Member] | Maximum [Member] | Other Predominantly ABS CODs [Member]	'		'
Summary of Quantitative Information Relating to the Principal Valuation Techniques and Significant Unobservable Inputs for Level 3 [Line Items]	'		'
Assumption for Fair Value of Assets or Liabilities that relate to Transferor's Continuing Involvement, Static Pool Losses	'		92.00%
Asset-Backed Securities [Member] | Maximum [Member] | Trust Preferred Securities - Real Estate Investment Trusts [Member]	'		'
Summary of Quantitative Information Relating to the Principal Valuation Techniques and Significant Unobservable Inputs for Level 3 [Line Items]	'		'
Assumption for Fair Value of Assets or Liabilities that relate to Transferor's Continuing Involvement, Static Pool Losses	'		100.00%
Level 3 [Member]	'		'
Summary of Quantitative Information Relating to the Principal Valuation Techniques and Significant Unobservable Inputs for Level 3 [Line Items]	'		'
Investments, Fair Value Disclosure	706,991,000		1,304,877,000
Level 3 [Member] | Trust Preferred - Predominantly Insurance [Member] | Asset-Backed Securities [Member]	'		'
Summary of Quantitative Information Relating to the Principal Valuation Techniques and Significant Unobservable Inputs for Level 3 [Line Items]	'		'
Investments, Fair Value Disclosure	'		346,390,000
Level 3 [Member] | Trust Preferred - Predominantly Banks [Member] | Asset-Backed Securities [Member]	'		'
Summary of Quantitative Information Relating to the Principal Valuation Techniques and Significant Unobservable Inputs for Level 3 [Line Items]	'		'
Investments, Fair Value Disclosure	744,840,000	[1]	921,819,000
Level 3 [Member] | Trust Preferred - Individual Banks [Member] | Asset-Backed Securities [Member]	'		'
Summary of Quantitative Information Relating to the Principal Valuation Techniques and Significant Unobservable Inputs for Level 3 [Line Items]	'		'
Investments, Fair Value Disclosure	'		22,324,000
Level 3 [Member] | Trust Preferred - Real Estate Investment Trusts [Member] | Asset-Backed Securities [Member]	'		'
Summary of Quantitative Information Relating to the Principal Valuation Techniques and Significant Unobservable Inputs for Level 3 [Line Items]	'		'
Investments, Fair Value Disclosure	0		22,996,000
Level 3 [Member] | Other Credit Derivatives [Member] | Asset-Backed Securities [Member]	'		'
Summary of Quantitative Information Relating to the Principal Valuation Techniques and Significant Unobservable Inputs for Level 3 [Line Items]	'		'
Investments, Fair Value Disclosure	30,000		25,800,000
Trust Preferred Banks and Insurance [Member] | Available-for-sale Securities [Member]	'		'
Summary of Quantitative Information Relating to the Principal Valuation Techniques and Significant Unobservable Inputs for Level 3 [Line Items]	'		'
Assumption For Fair Value Of Interests Continued To Be Held By Transferor Servicing Assets Or Liabilities Other Key Assumption Value	690,200,000		'
Trust Preferred Banks and Insurance [Member] | Held-to-maturity Securities [Member]	'		'
Summary of Quantitative Information Relating to the Principal Valuation Techniques and Significant Unobservable Inputs for Level 3 [Line Items]	'		'
Assumption For Fair Value Of Interests Continued To Be Held By Transferor Servicing Assets Or Liabilities Other Key Assumption Value	54,600,000		'
[1]	1 Amount consists of $690.2 million AFS and $54.6 million HTM.

Fair_Value_Schedule_Of_Assets_2

Fair Value (Schedule Of Assets With Fair Value Changes On Nonrecurring Basis) (Details) (USD $)

3 Months Ended

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

HTM Securities Adjusted For OTTI [Member]

HTM Securities Adjusted For OTTI [Member]

Impaired Loans [Member]

Impaired Loans [Member]

Private Equity Investments [Member]

Private Equity Investments [Member]

Other Real Estate Owned [Member]

Other Real Estate Owned [Member]

Level 1 [Member]

Level 1 [Member]

Level 1 [Member]

Level 1 [Member]

Level 1 [Member]

Level 1 [Member]

Level 1 [Member]

Level 1 [Member]

Level 1 [Member]

Level 1 [Member]

Level 2 [Member]

Level 2 [Member]

Level 2 [Member]

Level 2 [Member]

Level 2 [Member]

Level 2 [Member]

Level 2 [Member]

Level 2 [Member]

Level 2 [Member]

Level 2 [Member]

Level 3 [Member]

Level 3 [Member]

Level 3 [Member]

Level 3 [Member]

Level 3 [Member]

Level 3 [Member]

Level 3 [Member]

Level 3 [Member]

Level 3 [Member]

Level 3 [Member]

Estimated Fair Value [Member]

Estimated Fair Value [Member]

Estimated Fair Value [Member]

Estimated Fair Value [Member]

Estimated Fair Value [Member]

Estimated Fair Value [Member]

Estimated Fair Value [Member]

Estimated Fair Value [Member]

Estimated Fair Value [Member]

Estimated Fair Value [Member]

HTM Securities Adjusted For OTTI [Member]

HTM Securities Adjusted For OTTI [Member]

Impaired Loans [Member]

Impaired Loans [Member]

Private Equity Investments [Member]

Private Equity Investments [Member]

Other Real Estate Owned [Member]

Other Real Estate Owned [Member]

HTM Securities Adjusted For OTTI [Member]

HTM Securities Adjusted For OTTI [Member]

Impaired Loans [Member]

Impaired Loans [Member]

Private Equity Investments [Member]

Private Equity Investments [Member]

Other Real Estate Owned [Member]

Other Real Estate Owned [Member]

HTM Securities Adjusted For OTTI [Member]

HTM Securities Adjusted For OTTI [Member]

Impaired Loans [Member]

Impaired Loans [Member]

Private Equity Investments [Member]

Private Equity Investments [Member]

Other Real Estate Owned [Member]

Other Real Estate Owned [Member]

HTM Securities Adjusted For OTTI [Member]

HTM Securities Adjusted For OTTI [Member]

Impaired Loans [Member]

Impaired Loans [Member]

Private Equity Investments [Member]

Private Equity Investments [Member]

Other Real Estate Owned [Member]

Other Real Estate Owned [Member]

Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]

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Principal amount of other real estate owned property sold

$10,000,000

$22,000,000

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Fair value of assets measured on nonrecurring basis

'

'

'

'

'

'

'

'

'

'

0

0

0

0

0

0

0

0

0

0

35,663,000

36,449,000

0

0

21,943,000

11,765,000

0

0

13,720,000

24,684,000

71,000

21,753,000

71,000

8,483,000

0

0

0

13,270,000

0

0

35,734,000

58,202,000

71,000

8,483,000

21,943,000

11,765,000

0

13,270,000

13,720,000

24,684,000

Gains (losses) from fair value changes

($4,438,000)

($6,797,000)

($27,000)

($403,000)

($2,177,000)

($883,000)

$0

($820,000)

($2,234,000)

($4,691,000)

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Fair_Value_Schedule_Of_Carryin

Fair Value (Schedule Of Carrying Values And Estimated Fair Values Of Financial Instruments) (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Fair Value, Estimate Not Practicable, Financial Statement Captions [Line Items]	'	'
Held-to-maturity, fair value	$635,379	$609,547
Time deposits	2,528,735	2,593,038
Long-term debt (less fair value hedges)	2,158,701	2,273,575
Carrying Value [Member]	'	'
Fair Value, Estimate Not Practicable, Financial Statement Captions [Line Items]	'	'
Held-to-maturity, fair value	606,279	588,981
Loans and leases (including loans held for sale), net of allowance	38,587,527	38,468,402
Time deposits	2,528,735	2,593,038
Foreign deposits	1,648,111	1,980,161
Other short-term borrowings	0	0
Long-term debt (less fair value hedges)	2,155,606	2,269,762
Estimated Fair Value [Member]	'	'
Fair Value, Estimate Not Practicable, Financial Statement Captions [Line Items]	'	'
Held-to-maturity, fair value	635,379	609,547
Loans and leases (including loans held for sale), net of allowance	38,333,815	38,088,242
Time deposits	2,536,904	2,602,955
Foreign deposits	1,647,876	1,979,805
Other short-term borrowings	0	0
Long-term debt (less fair value hedges)	$2,301,239	$2,423,643

Commitments_Guarantees_And_Con2

Commitments, Guarantees, And Contingent Liabilities (Narrative) (Details) (USD $)	Mar. 31, 2014
In Millions, unless otherwise specified
Guarantees, Commitments And Contingencies [Abstract]	'
Letters of credit, accrued liability	$10.60
Reserve for unfunded lending commitments	7.9
Deferred commitment fees	2.7
Guarantee of trust preferred securities issued by affiliated trusts	15
Commitments for Private Equity and Other Noninterest-bearing Investments	27.8
Range of possible loss, minimum	0
Range of possible loss, maximum	$50

Commitments_Guarantees_And_Con3

Commitments, Guarantees, And Contingent Liabilities (Schedule Of Guarantees Issued) (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Liabilities for Guarantees on Long-Duration Contracts [Line Items]	'	'
Commitments To Extend Credit	$16,443,367	$16,174,326
Commercial Letters Of Credit	72,806	80,218
Total Unfunded Lending Commitments	17,508,637	17,193,840
Financial [Member]	'	'
Liabilities for Guarantees on Long-Duration Contracts [Line Items]	'	'
Standby letters of credit	812,011	779,811
Performance [Member]	'	'
Liabilities for Guarantees on Long-Duration Contracts [Line Items]	'	'
Standby letters of credit	$180,453	$159,485

Retirement_Plans_Schedule_Of_N

Retirement Plans (Schedule Of Net Periodic Benefit Cost (Credit) For Pension And Postretirement Plans) (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Pension Benefits [Member]	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Service cost	$0	$0
Interest cost	1,880	1,739
Expected return on plan assets	-3,326	-3,027
Amortization of net actuarial (gain) loss	797	2,157
Net periodic benefit cost (credit)	-649	869
Supplemental Retirement Benefits [Member]	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Service cost	0	0
Interest cost	113	101
Amortization of prior service cost (credit)	13	31
Amortization of net actuarial (gain) loss	5	17
Net periodic benefit cost (credit)	131	149
Postretirement Benefits [Member]	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Service cost	8	8
Interest cost	12	10
Amortization of prior service cost (credit)	0	-37
Amortization of net actuarial (gain) loss	-18	-19
Net periodic benefit cost (credit)	$2	($38)

Operating_Segment_Information_1

Operating Segment Information (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
	Banks
Segment Reporting Information [Line Items]	'	'
Net interest income	$416,465,000	$418,115,000
Provision for loan losses	-610,000	-29,035,000
Net interest income after provision for loan losses	417,075,000	447,150,000
Net impairment losses on investment securities	27,000	31,493,000
Other noninterest income	2,531,000	6,184,000
Noninterest expense	398,063,000	397,348,000
Income before income taxes	157,331,000	171,021,000
Income Tax Expense (Benefit)	56,121,000	60,634,000
Net income	101,210,000	110,387,000
Number of community/regional banks operating in distinct geographical areas	8	'
Zions Bank [Member]	'	'
Segment Reporting Information [Line Items]	'	'
Net interest income	142,500,000	151,500,000
Provision for loan losses	-8,700,000	1,800,000
Net interest income after provision for loan losses	151,200,000	149,700,000
Net impairment losses on investment securities	0	0
Other noninterest income	44,000,000	50,300,000
Noninterest expense	121,500,000	115,000,000
Income before income taxes	73,700,000	85,000,000
Income Tax Expense (Benefit)	26,800,000	31,000,000
Net income	46,900,000	54,000,000
Total assets	18,275,000,000	17,055,000,000
Average cash and due from banks	340,000,000	350,000,000
Average money market investments	3,545,000,000	2,507,000,000
Average Securities	1,596,000,000	1,239,000,000
Total loans	12,247,000,000	12,357,000,000
Total deposits	15,980,000,000	14,743,000,000
Preferred equity	280,000,000	280,000,000
Common equity	1,538,000,000	1,509,000,000
Noncontrolling interests	0	0
Total shareholders' equity	1,818,000,000	1,789,000,000
CB&T [Member]	'	'
Segment Reporting Information [Line Items]	'	'
Net interest income	109,200,000	114,600,000
Provision for loan losses	-2,100,000	-6,800,000
Net interest income after provision for loan losses	111,300,000	121,400,000
Net impairment losses on investment securities	0	0
Other noninterest income	5,800,000	21,600,000
Noninterest expense	85,300,000	90,300,000
Income before income taxes	31,800,000	52,700,000
Income Tax Expense (Benefit)	12,100,000	20,800,000
Net income	19,700,000	31,900,000
Total assets	10,889,000,000	10,922,000,000
Average cash and due from banks	166,000,000	175,000,000
Average money market investments	1,129,000,000	1,327,000,000
Average Securities	327,000,000	344,000,000
Total loans	8,538,000,000	8,275,000,000
Total deposits	9,272,000,000	9,309,000,000
Preferred equity	162,000,000	162,000,000
Common equity	1,350,000,000	1,327,000,000
Noncontrolling interests	0	0
Total shareholders' equity	1,512,000,000	1,489,000,000
Number of branches	95	'
Amegy [Member]	'	'
Segment Reporting Information [Line Items]	'	'
Net interest income	94,700,000	95,400,000
Provision for loan losses	16,900,000	-13,800,000
Net interest income after provision for loan losses	77,800,000	109,200,000
Net impairment losses on investment securities	0	0
Other noninterest income	32,000,000	38,400,000
Noninterest expense	87,000,000	84,200,000
Income before income taxes	22,800,000	63,400,000
Income Tax Expense (Benefit)	7,300,000	21,300,000
Net income	15,500,000	42,100,000
Total assets	13,467,000,000	12,690,000,000
Average cash and due from banks	322,000,000	321,000,000
Average money market investments	2,503,000,000	2,183,000,000
Average Securities	242,000,000	412,000,000
Total loans	9,362,000,000	8,595,000,000
Total deposits	11,099,000,000	10,291,000,000
Preferred equity	153,000,000	251,000,000
Common equity	1,849,000,000	1,744,000,000
Noncontrolling interests	0	0
Total shareholders' equity	2,002,000,000	1,995,000,000
Number of branches	84	'
NBA [Member]	'	'
Segment Reporting Information [Line Items]	'	'
Net interest income	40,300,000	40,500,000
Provision for loan losses	-3,000,000	0
Net interest income after provision for loan losses	43,300,000	40,500,000
Net impairment losses on investment securities	0	0
Other noninterest income	8,300,000	8,200,000
Noninterest expense	37,300,000	34,200,000
Income before income taxes	14,300,000	14,500,000
Income Tax Expense (Benefit)	5,200,000	5,400,000
Net income	9,100,000	9,100,000
Total assets	4,612,000,000	4,592,000,000
Average cash and due from banks	73,000,000	69,000,000
Average money market investments	288,000,000	479,000,000
Average Securities	365,000,000	274,000,000
Total loans	3,696,000,000	3,552,000,000
Total deposits	3,952,000,000	3,894,000,000
Preferred equity	120,000,000	180,000,000
Common equity	422,000,000	401,000,000
Noncontrolling interests	0	0
Total shareholders' equity	542,000,000	581,000,000
Number of branches	71	'
NSB [Member]	'	'
Segment Reporting Information [Line Items]	'	'
Net interest income	27,900,000	27,400,000
Provision for loan losses	-2,600,000	-200,000
Net interest income after provision for loan losses	30,500,000	27,600,000
Net impairment losses on investment securities	0	0
Other noninterest income	4,900,000	8,900,000
Noninterest expense	32,100,000	31,700,000
Income before income taxes	3,300,000	4,800,000
Income Tax Expense (Benefit)	1,000,000	1,600,000
Net income	2,300,000	3,200,000
Total assets	3,991,000,000	4,052,000,000
Average cash and due from banks	89,000,000	86,000,000
Average money market investments	699,000,000	994,000,000
Average Securities	781,000,000	742,000,000
Total loans	2,306,000,000	2,098,000,000
Total deposits	3,598,000,000	3,593,000,000
Preferred equity	50,000,000	139,000,000
Common equity	318,000,000	298,000,000
Noncontrolling interests	0	0
Total shareholders' equity	368,000,000	437,000,000
Number of branches	48	'
Vectra [Member]	'	'
Segment Reporting Information [Line Items]	'	'
Net interest income	25,300,000	25,600,000
Provision for loan losses	-1,800,000	-8,600,000
Net interest income after provision for loan losses	27,100,000	34,200,000
Net impairment losses on investment securities	0	0
Other noninterest income	3,800,000	7,000,000
Noninterest expense	25,300,000	25,100,000
Income before income taxes	5,600,000	16,100,000
Income Tax Expense (Benefit)	1,800,000	5,800,000
Net income	3,800,000	10,300,000
Total assets	2,569,000,000	2,463,000,000
Average cash and due from banks	47,000,000	52,000,000
Average money market investments	14,000,000	46,000,000
Average Securities	164,000,000	184,000,000
Total loans	2,280,000,000	2,092,000,000
Total deposits	2,168,000,000	2,107,000,000
Preferred equity	70,000,000	70,000,000
Common equity	247,000,000	227,000,000
Noncontrolling interests	0	0
Total shareholders' equity	317,000,000	297,000,000
TCBW [Member]	'	'
Segment Reporting Information [Line Items]	'	'
Net interest income	7,000,000	6,500,000
Provision for loan losses	700,000	-900,000
Net interest income after provision for loan losses	6,300,000	7,400,000
Net impairment losses on investment securities	0	0
Other noninterest income	-1,000,000	1,000,000
Noninterest expense	4,500,000	4,900,000
Income before income taxes	800,000	3,500,000
Income Tax Expense (Benefit)	300,000	1,200,000
Net income	500,000	2,300,000
Total assets	873,000,000	880,000,000
Average cash and due from banks	21,000,000	19,000,000
Average money market investments	118,000,000	181,000,000
Average Securities	90,000,000	101,000,000
Total loans	631,000,000	565,000,000
Total deposits	742,000,000	735,000,000
Preferred equity	3,000,000	3,000,000
Common equity	88,000,000	82,000,000
Noncontrolling interests	0	0
Total shareholders' equity	91,000,000	85,000,000
Number of branches	1	'
Other Banks [Member]	'	'
Segment Reporting Information [Line Items]	'	'
Net interest income	-30,400,000	-43,400,000
Provision for loan losses	0	-500,000
Net interest income after provision for loan losses	-30,400,000	-42,900,000
Net impairment losses on investment securities	0	-10,100,000
Other noninterest income	40,500,000	-4,100,000
Noninterest expense	5,100,000	11,900,000
Income before income taxes	5,000,000	-69,000,000
Income Tax Expense (Benefit)	1,600,000	-26,500,000
Net income	3,400,000	-42,500,000
Total assets	758,000,000	1,207,000,000
Average cash and due from banks	-17,000,000	-9,000,000
Average money market investments	-159,000,000	395,000,000
Average Securities	552,000,000	519,000,000
Total loans	65,000,000	64,000,000
Total deposits	-1,033,000,000	-262,000,000
Preferred equity	166,000,000	145,000,000
Common equity	-217,000,000	-598,000,000
Noncontrolling interests	0	-4,000,000
Total shareholders' equity	-51,000,000	-457,000,000
Consolidated Company [Member]	'	'
Segment Reporting Information [Line Items]	'	'
Net interest income	416,500,000	418,100,000
Provision for loan losses	-600,000	-29,000,000
Net interest income after provision for loan losses	417,100,000	447,100,000
Net impairment losses on investment securities	0	-10,100,000
Other noninterest income	138,300,000	131,300,000
Noninterest expense	398,100,000	397,300,000
Income before income taxes	157,300,000	171,000,000
Income Tax Expense (Benefit)	56,100,000	60,600,000
Net income	101,200,000	110,400,000
Total assets	55,434,000,000	53,861,000,000
Average cash and due from banks	1,041,000,000	1,063,000,000
Average money market investments	8,137,000,000	8,112,000,000
Average Securities	4,117,000,000	3,815,000,000
Total loans	39,125,000,000	37,598,000,000
Total deposits	45,778,000,000	44,410,000,000
Preferred equity	1,004,000,000	1,230,000,000
Common equity	5,595,000,000	4,990,000,000
Noncontrolling interests	0	-4,000,000
Total shareholders' equity	$6,599,000,000	$6,216,000,000
TCBO [Member]	'	'
Segment Reporting Information [Line Items]	'	'
Number of branches	1	'
Utah [Member] | Zions Bank [Member]	'	'
Segment Reporting Information [Line Items]	'	'
Number of branches	98	'
Idaho [Member] | Zions Bank [Member]	'	'
Segment Reporting Information [Line Items]	'	'
Number of branches	26	'
Colorado [Member] | Vectra [Member]	'	'
Segment Reporting Information [Line Items]	'	'
Number of branches	37	'
New Mexico [Member] | Vectra [Member]	'	'
Segment Reporting Information [Line Items]	'	'
Number of branches	1	'