Associated Banc-Corp (ASB) 10-Q 31 Oct 14 2014 Q3 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information (USD $)	9 Months Ended
	Sep. 30, 2014	Oct. 30, 2014	Jun. 30, 2014
Document And Entity Information [Abstract]	'	'	'
Entity Registrant Name	'ASSOCIATED BANC-CORP	'	'
Entity Central Index Key	'0000007789	'	'
Document Type	'10-Q	'	'
Document Period End Date	30-Sep-14	'	'
Amendment Flag	'false	'	'
Document Fiscal Year Focus	'2014	'	'
Document Fiscal Period Focus	'Q3	'	'
Current Fiscal Year End Date	'--12-31	'	'
Entity Well-known Seasoned Issuer	'Yes	'	'
Entity Voluntary Filers	'No	'	'
Entity Current Reporting Status	'Yes	'	'
Entity Filer Category	'Large Accelerated Filer	'	'
Entity Public Float	'	'	$2,852,499,000
Entity Common Stock, Shares Outstanding	'	151,985,246	'

Consolidated_Balance_Sheets_Un

Consolidated Balance Sheets (Unaudited) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, except Share data, unless otherwise specified
ASSETS	'	'
Cash and due from banks	$381,287	$455,482
Interest-bearing deposits in other financial institutions	74,945	126,018
Federal funds sold and securities purchased under agreements to resell	18,320	20,745
Investment securities held to maturity at amortized cost	301,941	175,210
Investment securities available for sale, fair value	5,345,422	5,250,585
Federal Home Loan Bank and Federal Reserve Bank stocks, at cost	188,875	181,249
Loans held for sale	141,672	64,738
Loans	17,159,090	15,896,261
Allowance for loan losses	-266,262	-268,315
Loans, net	16,892,828	15,627,946
Premises and equipment, net	272,283	270,890
Goodwill	929,168	929,168
Other intangible assets, net	69,201	74,464
Trading assets	34,005	43,728
Other assets	1,003,875	1,006,697
Total assets	25,653,822	24,226,920
LIABILITIES AND STOCKHOLDERS' EQUITY	'	'
Noninterest-bearing demand deposits	4,302,454	4,626,312
Interest-bearing deposits	13,898,804	12,640,855
Total deposits	18,201,258	17,267,167
Federal funds purchased and securities sold under agreements to repurchase	765,641	475,442
Other short-term funding	664,539	265,484
Long-term funding	2,931,547	3,087,267
Trading liabilities	36,003	46,470
Accrued expenses and other liabilities	185,256	193,800
Total liabilities	22,784,244	21,335,630
Stockholders' equity	'	'
Preferred equity	61,024	61,862
Common stock	1,719	1,750
Surplus	1,583,032	1,617,990
Retained earnings	1,466,525	1,392,508
Accumulated other comprehensive income (loss)	-1,725	-24,244
Treasury stock, at cost	-240,997	-158,576
Total stockholders' equity	2,869,578	2,891,290
Total liabilities and stockholders' equity	$25,653,822	$24,226,920
Preferred shares issued	62,689	63,549
Preferred shares authorized (par value $1.00 per share)	750,000	750,000
Common shares issued	171,888,747	175,012,686
Common shares authorized (par value $0.01 per share)	250,000,000	250,000,000
Treasury shares of common stock	15,126,171	10,874,182

Consolidated_Balance_Sheets_Un1

Consolidated Balance Sheets (Unaudited) (Parenthetical) (USD $)	Sep. 30, 2014	Dec. 31, 2013
Stockholders' equity	'	'
Preferred shares, par value	$1	$1
Common shares, par value	$0.01	$0.01

Consolidated_Statements_of_Inc

Consolidated Statements of Income (Unaudited) (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
INTEREST INCOME	'	'	'	'
Interest and fees on loans	$152,030	$146,219	$442,046	$438,642
Interest and dividends on investment securities	'	'	'	'
Taxable	25,037	21,544	77,403	64,603
Tax exempt	7,483	6,711	21,484	20,461
Other interest	1,503	1,260	4,814	3,740
Total interest income	186,053	175,734	545,747	527,446
INTEREST EXPENSE	'	'	'	'
Interest on deposits	6,621	7,617	18,975	23,927
Interest on Federal funds purchased and securities sold under agreements to repurchase	390	308	1,001	1,051
Interest on other short-term funding	233	434	629	1,291
Interest on long-term funding	6,179	6,866	18,836	22,833
Total interest expense	13,423	15,225	39,441	49,102
NET INTEREST INCOME	172,630	160,509	506,306	478,344
Provision for credit losses	1,000	-800	11,000	7,800
Net interest income after provision for credit losses	171,630	161,309	495,306	470,544
NONINTEREST INCOME	'	'	'	'
Trust service fees	12,218	11,380	35,946	33,695
Service charges on deposit accounts	17,961	18,407	51,773	52,679
Card-based and other nondeposit fees	12,407	12,688	37,493	37,229
Insurance commissions	7,860	11,356	33,828	32,750
Brokerage and annuity commissions	4,040	3,792	12,593	10,996
Mortgage banking, net	6,669	3,542	18,392	40,570
Capital market fees, net	2,939	2,652	7,360	10,309
Bank owned life insurance income	3,506	2,817	10,837	9,068
Asset gains (losses), net	4,934	1,934	6,561	2,726
Investment securities gains (losses), net	57	248	469	582
Other	2,317	2,100	5,424	6,622
Total noninterest income	74,908	70,916	220,676	237,226
NONINTEREST EXPENSE	'	'	'	'
Personnel expense	97,650	98,102	293,141	295,800
Occupancy	13,743	14,758	43,088	44,725
Equipment	6,133	6,213	18,636	18,842
Technology	13,573	12,323	40,891	36,482
Business development and advertising	7,467	5,947	17,606	15,512
Other intangible asset amortization	990	1,010	2,972	3,032
Loan expense	3,813	3,157	10,220	9,485
Legal and professional fees	4,604	3,482	13,228	14,310
Losses other than loans	677	-600	1,602	283
Foreclosure/OREO expense	2,083	2,515	5,554	7,239
FDIC expense	6,859	4,755	16,805	14,582
Other	14,261	13,509	43,693	41,190
Total noninterest expense	171,853	165,171	507,436	501,482
Income before income taxes	74,685	67,054	208,546	206,288
Income tax expense	24,478	21,396	66,775	65,354
Net income	50,207	45,658	141,771	140,934
Preferred stock dividends	1,255	1,285	3,777	3,885
Net income available to common equity	$48,952	$44,373	$137,994	$137,049
Earnings per common share:	'	'	'	'
Basic	$0.31	$0.27	$0.86	$0.82
Diluted	$0.31	$0.27	$0.85	$0.82
Average common shares outstanding:	'	'	'	'
Basic	155,925	164,954	159,090	166,586
Diluted	156,991	165,443	159,993	166,760

Consolidated_Statement_of_Comp

Consolidated Statement of Comprehensive Income (Unaudited) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Other Comprehensive Income [Abstract]	'	'	'	'
Net income	$50,207	$45,658	$141,771	$140,934
Investment securities available for sale:	'	'	'	'
Net unrealized gains (losses)	-20,123	-20,558	36,061	-142,318
Reclassification adjustment for net (gains) losses realized in net income	-57	-248	-469	-582
Income tax (expense) benefit	7,757	8,031	-13,684	55,169
Other comprehensive income (loss) on investment securities available for sale	-12,423	-12,775	21,908	-87,731
Defined benefit pension and postretirement obligations:	'	'	'	'
Amortization of prior service cost	15	17	45	52
Amortization of actuarial losses	317	1,073	949	3,218
Income tax (expense) benefit	-128	-420	-383	-1,262
Other comprehensive income on pension and postretirement obligations	204	670	611	2,008
Total other comprehensive income (loss)	-12,219	-12,105	22,519	-85,723
Comprehensive income (loss)	$37,988	$33,553	$164,290	$55,211

Consolidated_Statements_of_Cha

Consolidated Statements of Changes in Stockholder's Equity (Unaudited) (USD $)	Total	Preferred Equity	Common Stock	Surplus	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Treasury Stock
In Thousands, unless otherwise specified
Beginning balance at Dec. 31, 2012	$2,936,399	$63,272	$1,750	$1,602,136	$1,281,811	$48,603	($61,173)
Comprehensive (loss) income:	'	'	'	'	'	'	'
Net income	140,934	0	0	0	140,934	0	0
Other comprehensive income (loss)	-85,723	0	0	0	0	-85,723	0
Comprehensive income (loss)	55,211	'	'	'	'	'	'
Common stock issued:	'	'	'	'	'	'	'
Stock-based compensation plans, net	6,875	0	0	564	-17,057	0	23,368
Purchase of treasury stock	-93,294	0	0	0	0	0	-93,294
Cash dividends:	'	'	'	'	'	'	'
Common stock	-40,223	0	0	0	-40,223	0	0
Preferred stock	-3,885	0	0	0	-3,885	0	0
Accretion of preferred stock discount	0	0	0	0	0	0	0
Purchase of Preferred Stock	-617	-535	0	0	-82	0	0
Stock-based compensation expense, net	11,368	0	0	11,368	0	0	0
Tax benefit of stock options	448	0	0	448	0	0	0
Ending balance at Sep. 30, 2013	2,872,282	62,737	1,750	1,614,516	1,361,498	-37,120	-131,099
Beginning balance at Dec. 31, 2013	2,891,290	61,862	1,750	1,617,990	1,392,508	-24,244	-158,576
Comprehensive (loss) income:	'	'	'	'	'	'	'
Net income	141,771	0	0	0	141,771	0	0
Other comprehensive income (loss)	22,519	0	0	0	0	22,519	0
Comprehensive income (loss)	164,290	'	'	'	'	'	'
Common stock issued:	'	'	'	'	'	'	'
Stock-based compensation plans, net	11,131	0	0	1,863	-20,556	0	29,824
Purchase of treasury stock	-162,743	0	0	0	0	0	-162,743
Cash dividends:	'	'	'	'	'	'	'
Common stock	-43,299	0	0	'	-43,299	0	0
Preferred stock	-3,777	0	0	0	-3,777	0	0
Purchase of common stock returned to authorized but unissued	0	0	-31	-50,467	0	0	50,498
Purchase of Preferred Stock	-960	-838	0	0	-122	0	0
Stock-based compensation expense, net	12,462	0	0	12,462	0	0	0
Tax benefit of stock options	1,184	0	0	1,184	0	0	0
Ending balance at Sep. 30, 2014	$2,869,578	$61,024	$1,719	$1,583,032	$1,466,525	($1,725)	($240,997)

Consolidated_Statements_of_Cha1

Consolidated Statements of Changes in Stockholder's Equity (Unaudited) (Parenthetical) (Retained Earnings, USD $)	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Retained Earnings	'	'
Cash dividends:	'	'
Common stock, per share	$0.27	$0.24

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (Unaudited) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013
CASH FLOWS FROM OPERATING ACTIVITIES	'	'
Net income	$141,771	$140,934
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:	'	'
Provision for credit losses	11,000	7,800
Depreciation and amortization	38,023	36,738
(Recovery of) addition to valuation allowance on mortgage servicing rights, net	-89	-14,097
Amortization of mortgage servicing rights	8,224	12,479
Amortization of other intangible assets	2,972	3,032
Amortization and accretion on earning assets, funding, and other, net	21,647	36,973
Tax impact of stock-based compensation	1,184	448
(Gain) loss on sales of investment securities, net and impairment write-downs	-469	-582
(Gain) loss on sales of assets and impairment write-downs, net	-6,561	-2,726
Gain on mortgage banking activities, net	-11,668	-31,539
Mortgage loans originated and acquired for sale	-777,532	-1,977,357
Proceeds from sales of mortgage loans held for sale	735,565	2,152,286
Pension Contributions	-21,270	-28,000
(Increase) decrease in interest receivable	-3,301	739
Increase (decrease) in interest payable	-6,451	-8,293
Net change in other assets and other liabilities	-2,333	42,721
Net cash provided by (used in) operating activities	130,712	371,556
CASH FLOWS FROM INVESTING ACTIVITIES	'	'
Net (increase) decrease in loans	-1,292,718	-233,755
Purchases of:	'	'
Available for sale securities	-808,899	-1,305,155
Held to maturity securities	-126,602	-85,453
FHLB stock	-7,626	-28,520
Premises, equipment, and software, net of disposals	-35,507	-49,139
Other assets	-2,460	-1,401
Proceeds from:	'	'
Sales of available for sale securities	101,987	135,809
Sale of FHLB stock	0	14,399
Prepayments, calls and maturities of available for sale securities	620,606	1,082,290
Prepayments, calls and maturities of held to maturity securities	6,170	0
Prepayments, calls, and maturities of other assets	29,136	30,857
Net cash provided by (used in) investing activities	-1,515,913	-440,068
CASH FLOWS FROM FINANCING ACTIVITIES	'	'
Net increase (decrease) in deposits	934,091	1,398,043
Net increase (decrease) in short-term funding	689,254	-700,059
Repayment of long-term funding	-155,058	-400,156
Purchase of preferred stock	-960	-617
Cash dividends on common stock	-43,299	-40,223
Cash dividends on preferred stock	-3,777	-3,885
Purchase of treasury stock	-162,743	-93,294
Net cash provided by (used in) financing activities	1,257,508	159,809
Net increase (decrease) in cash and cash equivalents	-127,693	91,297
Cash and cash equivalents at beginning of period	602,245	737,873
Cash and cash equivalents at end of period	474,552	829,170
Supplemental disclosures of cash flow information:	'	'
Cash paid for interest	46,026	57,310
Cash (received) paid for income taxes	57,167	29,700
Loans and bank premises transferred to other real estate owned	17,125	21,962
Capitalized mortgage servicing rights	$5,844	$15,968

Basis_of_Presentation

Basis of Presentation	9 Months Ended
	Sep. 30, 2014
Basis of Presentation [Abstract]	'
Basis of Presentation	'
	NOTE 1: Basis of Presentation
	In the opinion of management, the accompanying unaudited consolidated financial statements contain all adjustments necessary to present fairly the financial position, results of operations and comprehensive income, changes in stockholders' equity, and cash flows of Associated Banc-Corp (individually referred to herein as the “Parent Company,” and together with all of its subsidiaries and affiliates, collectively referred to herein as the “Corporation”) for the periods presented, and all such adjustments are of a normal recurring nature. The consolidated financial statements include the accounts of all subsidiaries. All significant intercompany transactions and balances have been eliminated in consolidation. The results of operations for the interim periods are not necessarily indicative of the results to be expected for the full year.
	Certain amounts in the consolidated financial statements of prior periods have been reclassified to conform with the current period's presentation. The consolidated statements of income were modified from prior periods' presentation to conform with the current period presentation, which shows a new provision for credit losses line item comprised of the provision for loan losses and the provision for unfunded commitments. In prior periods' presentation, the provision for unfunded commitments was reported as a component of losses other than loans in the consolidated statements of income. The presentation of the consolidated balance sheets remains unchanged with the allowance for loan losses presented as a valuation allowance with the related loan asset, while the allowance for unfunded commitments is included in accrued expenses and other liabilities.
	In preparing the consolidated financial statements, management is required to make estimates and assumptions that affect the reported amounts of assets and liabilities as of the date of the balance sheet and revenues and expenses for the period. Actual results could differ significantly from those estimates. Estimates that are particularly susceptible to significant change include the determination of the allowance for credit losses, goodwill impairment assessment, mortgage servicing rights valuation, and income taxes. Management has evaluated subsequent events for potential recognition or disclosure.

New_Accounting_Pronouncements_

New Accounting Pronouncements Adopted	9 Months Ended
	Sep. 30, 2014
New Accounting Pronouncements Adopted [Abstract]	'
New Accounting Pronouncements Adopted	'
	NOTE 2: New Accounting Pronouncements Adopted
	In July 2013, the FASB issued an amendment to clarify the presentation of an unrecognized tax benefit when a net operating loss carryforward, a similar tax loss, or a tax credit carryforward exists. An unrecognized tax benefit, or a portion of an unrecognized tax benefit, should be presented in the financial statements as a reduction to a deferred tax asset for a net operating loss carryforward, a similar tax loss, or a tax credit carryforward, except as follows. To the extent a net operating loss carryforward, a similar tax loss, or a tax credit carryforward is not available at the reporting date under the tax law of the applicable jurisdiction to settle any additional income taxes that would result from the disallowance of a tax position or the tax law of the applicable jurisdiction does not require the entity to use, and the entity does not intend to use, the deferred tax asset for such purpose, the unrecognized tax benefit should be presented in the financial statements as a liability and should not be combined with deferred tax assets. This amendment is effective for fiscal years, and interim periods within those years, beginning after December 15, 2013 and should be applied prospectively. The Corporation adopted the accounting standard during the first quarter of 2014, as required, with no material impact on its results of operations, financial position, or liquidity.

Earnings_per_Share

Earnings per Share	9 Months Ended
	Sep. 30, 2014
Earnings Per Share [Abstract]	'
Earnings Per Share	'
	NOTE 3: Earnings Per Common Share
	Earnings per share are calculated utilizing the two-class method. Basic earnings per common share are calculated by dividing the sum of distributed earnings to common shareholders and undistributed earnings allocated to common shareholders by the weighted average number of common shares outstanding. Diluted earnings per common share are calculated by dividing the sum of distributed earnings to common shareholders and undistributed earnings allocated to common shareholders by the weighted average number of common shares outstanding adjusted for the dilutive effect of common stock awards (outstanding stock options, unvested restricted stock, and outstanding stock warrants). Presented below are the calculations for basic and diluted earnings per common share.
			For the Three Months Ended				For the Nine Months Ended
			30-Sep				30-Sep
			2014		2013		2014		2013
			(In Thousands, except per share data)
	Net income	$	50,207	$	45,658	$	141,771	$	140,934
	Preferred stock dividends		-1,255		-1,285		-3,777		-3,885
	Net income available to common equity	$	48,952	$	44,373	$	137,994	$	137,049
	Common shareholder dividends		-13,983		-13,167		-42,864		-39,849
	Dividends on unvested share-based payment awards		-140		-100		-435		-374
	Undistributed earnings	$	34,829	$	31,106	$	94,695	$	96,826
	Undistributed earnings allocated to common shareholders		34,481		30,873		93,862		96,112
	Undistributed earnings allocated to unvested share-based payment awards		348		233		833		714
	Undistributed earnings	$	34,829	$	31,106	$	94,695	$	96,826
	Basic
	Distributed earnings to common shareholders	$	13,983	$	13,167	$	42,864	$	39,849
	Undistributed earnings allocated to common shareholders		34,481		30,873		93,862		96,112
	Total common shareholders earnings, basic	$	48,464	$	44,040	$	136,726	$	135,961
	Diluted
	Distributed earnings to common shareholders	$	13,983	$	13,167	$	42,864	$	39,849
	Undistributed earnings allocated to common shareholders		34,481		30,873		93,862		96,112
	Total common shareholders earnings, diluted	$	48,464	$	44,040	$	136,726	$	135,961
	Weighted average common shares outstanding		155,925		164,954		159,090		166,586
	Effect of dilutive common stock awards		1,066		489		903		174
	Diluted weighted average common shares outstanding		156,991		165,443		159,993		166,760
	Basic earnings per common share	$	0.31	$	0.27	$	0.86	$	0.82
	Diluted earnings per common share	$	0.31	$	0.27	$	0.85	$	0.82
	Options to purchase approximately 2 million and 3 million shares were outstanding for the three and nine months ended September 30, 2014, respectively, but excluded from the calculation of diluted earnings per common share as the effect would have been anti-dilutive. Options to purchase approximately 3 million shares were outstanding for both the three and nine months ended September 30, 2013, but excluded from the calculation of diluted earnings per common share as the effect would have been anti-dilutive.

StockBased_Compensation

Stock-Based Compensation	9 Months Ended
	Sep. 30, 2014
Stock-Based Compensation [Abstract]	'
Stock-Based Compensation	'
	NOTE 4: Stock-Based Compensation
	At September 30, 2014, the Corporation had one stock-based compensation plan, the 2013 Incentive Compensation Plan. All stock options granted under this plan have an exercise price that is equal to the closing price of the Corporation's stock on the grant date.
	The Corporation also issues restricted common stock and restricted common stock units to certain key employees (collectively referred to as "restricted stock awards") under this plan. The shares of restricted stock are restricted as to transfer, but are not restricted as to dividend payment or voting rights. Restricted stock units receive dividend equivalents but do not have voting rights. The transfer restrictions primarily lapse over three or four years, depending upon whether the awards are service-based or performance-based. Service-based awards are contingent upon continued employment or meeting the requirements for retirement, and performance-based awards are based on earnings per share performance goals, relative total shareholder return, and continued employment or meeting the requirements for retirement. The plan provides that restricted stock awards and stock options will immediately become fully vested upon retirement from the Corporation of those colleagues whose retirement meets the early retirement or normal retirement definitions under the plan ("retirement eligible colleagues").
	The fair value of stock options granted is estimated on the date of grant using a Black-Scholes option pricing model, while the fair value of restricted stock awards is their fair market value on the date of grant. The fair values of stock options and restricted stock awards are amortized as compensation expense on a straight-line basis over the vesting period of the grants. Beginning with the 2014 grants, expenses related to stock options and restricted stock are fully recognized on the date the colleague meets the definition of normal or early retirement. Compensation expense recognized is included in personnel expense in the consolidated statements of income.
	Assumptions are used in estimating the fair value of stock options granted. The weighted average expected life of the stock option represents the period of time that stock options are expected to be outstanding and is estimated using historical data of stock option exercises and forfeitures. The risk-free interest rate is based on the U.S. Treasury yield curve in effect at the time of grant. The expected volatility is based on the implied volatility of the Corporation's stock. The following assumptions were used in estimating the fair value for options granted in the first nine months of 2014 and full year 2013.
			2014				2013
	Dividend yield		2	%			2	%
	Risk-free interest rate		2	%			0.99	%
	Weighted average expected volatility		20	%			34.35	%
	Weighted average expected life		6 years				6 years
	Weighted average per share fair value of options	$	3			$	3.8
	The Corporation is required to estimate potential forfeitures of stock grants and adjust compensation expense recorded accordingly. The estimate of forfeitures will be adjusted over the requisite service period to the extent that actual forfeitures differ, or are expected to differ, from such estimates. Changes in estimated forfeitures will be recognized in the period of change and will also impact the amount of stock compensation expense to be recognized in future periods.
	A summary of the Corporation's stock option activity for the year ended December 31, 2013 and for the nine months ended September 30, 2014, is presented below.
							Weighted Average		Aggregate Intrinsic
					Weighted Average		Remaining		Value
	Stock Options		Shares		Exercise Price		Contractual Term		(000s)
	Outstanding at December 31, 2012		8,640,558		$	18.88
	Granted		1,020,979			14.02
	Exercised		-642,202			13.43
	Forfeited or expired		-985,092			21.49
	Outstanding at December 31, 2013		8,034,243		$	18.37		6.03	$	20,838
	Options exercisable at December 31, 2013		4,923,720		$	21.48		4.62		8,580
	Outstanding at December 31, 2013		8,034,243		$	18.37
	Granted		1,389,452			17.45
	Exercised		-754,470			13.74
	Forfeited or expired		-589,238			24.36
	Outstanding at September 30, 2014		8,079,987		$	18.21		6.12	$	17,762
	Options exercisable at September 30, 2014		5,225,930		$	19.78		4.79		11,624
	The following table summarizes information about the Corporation's nonvested stock option activity for the year ended December 31, 2013, and for the nine months ended September 30, 2014.
					Weighted Average
	Stock Options		Shares		Grant Date Fair Value
	Nonvested at December 31, 2012		4,036,595		$	5.11
	Granted		1,020,979			3.8
	Vested		-1,680,981			5.1
	Forfeited		-266,070			5.05
	Nonvested at December 31, 2013		3,110,523		$	4.69
	Granted		1,389,452			3
	Vested		-1,492,733			4.95
	Forfeited		-153,185			4.41
	Nonvested at September 30, 2014		2,854,057		$	3.75
	The intrinsic value of stock options exercised for the nine months ended September 30, 2014 was $3 million and $2 million for the year ended December 31, 2013, respectively. The total fair value of stock options that vested was $7 million for the first nine months of 2014 and $9 million for the year ended December 31, 2013. For the nine months ended September 30, 2014 and 2013, the Corporation recognized compensation expense for the vesting of stock options of $5 million and $6 million, respectively. For the full year 2013, the Corporation recognized compensation expense of $8 million for the vesting of stock options. Included in compensation expense for 2014 was approximately $250,000 of expense for the accelerated vesting of stock options granted to retirement eligible colleagues. At September 30, 2014, the Corporation had $6 million of unrecognized compensation expense related to stock options that is expected to be recognized over the remaining requisite service periods that extend predominantly through fourth quarter 2018.
	The following table summarizes information about the Corporation's restricted stock awards activity for the year ended December 31, 2013, and for the nine months ended September 30, 2014.
					Weighted Average
	Restricted Stock		Shares		Grant Date Fair Value
	Outstanding at December 31, 2012		932,425		$	13.6
	Granted		1,276,868			14.03
	Vested		-626,480			13.68
	Forfeited		-71,048			13.92
	Outstanding at December 31, 2013		1,511,765		$	13.92
	Granted		1,158,711			17.41
	Vested		-526,784			14.13
	Forfeited		-124,222			15.06
	Outstanding at September 30, 2014		2,019,470		$	15.8
	The Corporation amortizes the expense related to restricted stock awards as compensation expense over the vesting period specified in the grant. Restricted stock awards granted during 2013 to executive officers will vest ratably over a three year period, while restricted stock awards granted during 2014 will vest ratably over a four year period. Restricted stock awards granted to non-executives during 2014 and 2013 will vest ratably over a four year period. Expense for restricted stock awards of approximately $8 million and $6 million was recognized for the nine months ended September 30, 2014 and 2013, respectively. The Corporation recognized approximately $7 million of expense for restricted stock awards for the full year 2013. Included in compensation expense for 2014 was approximately $1.1 million of expense for the accelerated vesting of restricted stock awards granted to retirement eligible colleagues. The Corporation had $24 million of unrecognized compensation costs related to restricted stock awards at September 30, 2014 that is expected to be recognized over the remaining requisite service periods that extend predominantly through fourth quarter 2018.
	The Corporation has the ability to issue shares from treasury or new shares upon the exercise of stock options or the granting of restricted stock awards. The Board of Directors has authorized management to repurchase shares of the Corporation's common stock each quarter in the market, to be made available for issuance in connection with the Corporation's employee incentive plans and for other corporate purposes. The repurchase of shares will be based on market and investment opportunities, capital levels, growth prospects, and regulatory constraints. Such repurchases may occur from time to time in open market purchases, block transactions, private transactions, accelerated share repurchase programs, or similar facilities.

Investment_Securities

Investment Securities	9 Months Ended
	Sep. 30, 2014
Investment Securities [Abstract]	'
Investment Securities	'
	NOTE 5: Investment Securities
	The amortized cost and fair values of investment securities available for sale and held to maturity were as follows.
								Gross			Gross
					Amortized			unrealized			unrealized
	September 30, 2014:				cost			gains			losses				Fair value
						($ in Thousands)
	Investment securities available for sale:
		U.S. Treasury securities			$	999		$	―		$	-3		$	996
		Obligations of state and political subdivisions
			(municipal securities)			588,255			26,229			-48			614,436
		Residential mortgage-related securities:
			Government-sponsored enterprise ("GSE")			3,725,218			59,047			-43,225			3,741,040
			Private-label			2,475			9			-2			2,482
		GNMA commercial mortgage-related securities				1,007,068			1,751			-28,217			980,602
		Other securities (debt and equity)				5,806			60			―			5,866
				Total investment securities available for sale	$	5,329,821		$	87,096		$	-71,495		$	5,345,422
	Investment securities held to maturity:
		Obligations of state and political subdivisions
			(municipal securities)		$	301,941		$	6,875		$	-934		$	307,882
				Total investment securities held to maturity	$	301,941		$	6,875		$	-934		$	307,882
								Gross			Gross
					Amortized			unrealized			unrealized
	December 31, 2013:				cost			gains			losses				Fair value
						($ in Thousands)
	Investment securities available for sale:
		U.S. Treasury securities			$	1,001		$	1		$	-		$	1,002
		Obligations of state and political subdivisions
			(municipal securities)			653,758			23,855			-1,533			676,080
		Residential mortgage-related securities:
			GSE			3,855,467			61,542			-78,579			3,838,430
			Private-label			3,035			16			-37			3,014
		GNMA commercial mortgage-related securities				673,555			1,764			-27,842			647,477
		Asset-backed securities (1)				23,049			10			-			23,059
		Other securities (debt and equity)				60,711			855			-43			61,523
				Total investment securities available for sale	$	5,270,576		$	88,043		$	-108,034		$	5,250,585
	Investment securities held to maturity:
		Obligations of state and political subdivisions
			(municipal securities)		$	175,210		$	401		$	-5,722		$	169,889
				Total investment securities held to maturity	$	175,210		$	401		$	-5,722		$	169,889
	(1) The asset-backed securities position is largely comprised of senior, floating rate, tranches of student loan securities issued by SLM Corp and guaranteed under the Federal Family Education Loan Program.
	The amortized cost and fair values of investment securities available for sale and held to maturity at September 30, 2014, are shown below. Expected maturities will differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties.
			Available for Sale						Held to Maturity
	($ in Thousands)		Amortized Cost				Fair Value		Amortized Cost				Fair Value
	Due in one year or less		$	28,053		$	28,232		$	-		$	-
	Due after one year through five years			224,059			236,326			765			774
	Due after five years through ten years			333,788			347,187			105,931			106,998
	Due after ten years			9,142			9,480			195,245			200,110
		Total debt securities		595,042			621,225			301,941			307,882
	Residential mortgage-related securities:
		GSE		3,725,218			3,741,040			-			-
		Private-label		2,475			2,482			-			-
	GNMA commercial mortgage-related securities			1,007,068			980,602			-			-
	Equity securities			18			73			-			-
		Total investment securities	$	5,329,821		$	5,345,422		$	301,941		$	307,882
	Ratio of Fair Value to Amortized Cost						100.3	%					102	%
	The following represents gross unrealized losses and the related fair value of investment securities available for sale and held to maturity, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, at September 30, 2014.
				Less than 12 months								12 months or more							Total
				Number of		Unrealized				Fair		Number of		Unrealized			Fair	Unrealized			Fair
	September 30, 2014:			Securities			Losses			Value		Securities			Losses		Value		Losses		Value
							($ in Thousands)
	Investment securities available for sale:
		U.S. Treasury securities		1		$	-3		$	996		0		$	―	$	―	$	-3	$	996
		Obligations of state and political
		subdivisions (municipal securities)	5			-1		$	1,799		13			-47	$	5,647		-48	$	7,446
	Residential mortgage-related securities:
		GSE	30			-1,472			331,085		64			-41,753		1,389,945		-43,225		1,721,030
		Private-label	1			-1			1,889		2			-1		30		-2		1,919
	GNMA commercial mortgage-related securities		12			-1,927			363,315		15			-26,290		390,443		-28,217		753,758
		Total			$	-3,404		$	699,084				$	-68,091	$	1,786,065	$	-71,495	$	2,485,149
Investment securities held to maturity:
	Obligations of state and political
		subdivisions (municipal securities)	39		$	-55		$	14,443		119		$	-879	$	55,522	$	-934	$	69,965
		Total			$	-55		$	14,443				$	-879	$	55,522	$	-934	$	69,965
For comparative purposes, the following represents gross unrealized losses and the related fair value of investment securities available for sale and held to maturity, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, at December 31, 2013.
						Less than 12 months								12 months or more				Total
			Number								Number
			of		Unrealized						of		Unrealized				Unrealized
December 31, 2013:			Securities		Losses			Fair Value			Securities		Losses		Fair Value		Losses		Fair Value
						($ in Thousands)
Investment securities available for sale:
	Obligations of state and political
		subdivisions (municipal securities)	113		$	-1,525		$	47,044		1		$	-8	$	273	$	-1,533	$	47,317
	Residential mortgage-related securities:
		GSE	106			-57,393			1,887,784		15			-21,186		421,082		-78,579		2,308,866
		Private-label	2			-37			2,105		1			-		35		-37		2,140
	GNMA commercial mortgage-related securities		19			-23,854			443,462		1			-3,988		45,950		-27,842		489,412
	Other debt securities		5			-43			6,452		0			-		-		-43		6,452
		Total			$	-82,852		$	2,386,847				$	-25,182	$	467,340	$	-108,034	$	2,854,187
Investment securities held to maturity:
	Obligations of state and political
		subdivisions (municipal securities)	298		$	-5,339		$	124,435		10		$	-383	$	5,010	$	-5,722	$	129,445
		Total			$	-5,339		$	124,435				$	-383	$	5,010	$	-5,722	$	129,445
The Corporation reviews the investment securities portfolio on a quarterly basis to monitor its exposure to other-than-temporary impairment. A determination as to whether a security's decline in fair value is other-than-temporary takes into consideration numerous factors and the relative significance of any single factor can vary by security. Some factors the Corporation may consider in the other-than-temporary impairment analysis include, the length of time and extent to which the security has been in an unrealized loss position, changes in security ratings, financial condition and near-term prospects of the issuer, as well as security and industry specific economic conditions. In addition, with regards to its debt securities, the Corporation may also evaluate payment structure, whether there are defaulted payments or expected defaults, prepayment speeds, and the value of any underlying collateral.
Based on the Corporation's evaluation, management does not believe any unrealized loss at September 30, 2014 represents an other-than-temporary impairment as these unrealized losses are primarily attributable to changes in interest rates and the current market conditions, and not credit deterioration. The unrealized losses reported for residential mortgage-related securities relate to private-label residential mortgage-related securities as well as residential mortgage-related securities issued by government-sponsored enterprises such as the Government National Mortgage Association ("GNMA"), the Federal National Mortgage Association (“FNMA”) and the Federal Home Loan Mortgage Corporation (“FHLMC”). The unrealized losses reported for commercial mortgage-related securities relate to securities issued by GNMA. The unrealized losses reported for municipal securities relate to various state and local political subdivisions and school districts. The Corporation currently does not intend to sell nor does it believe that it will be required to sell the securities contained in the above unrealized losses table before recovery of their amortized cost basis. The improvement in the unrealized loss position of the investment securities portfolio was due to a reduction in the overall level of interest rates from December 31, 2013 to September 30, 2014, as well as spread compression on mortgage-related and municipal securities, which increased the fair value of investment securities.
The following is a summary of the credit loss portion of other-than-temporary impairment recognized in earnings on debt securities for the year ended December 31, 2013 and the nine months ended September 30, 2014, respectively.
		Private-label
		Mortgage-Related			Trust Preferred
		Securities			Debt Securities				Total
		($ in Thousands)
Balance of credit-related other-than-temporary
	impairment at December 31, 2012	$	-532		$	-6,336		$	-6,868
Reduction due to credit impaired securities sold			532			57			589
Balance of credit-related other-than-temporary									.
	impairment at December 31, 2013	$	―		$	-6,279		$	-6,279
Reduction due to credit impaired securities sold or abandoned			―			6,279			6,279
Balance of credit-related other-than-temporary									.
	impairment at September 30, 2014	$	―		$	―		$	―
Federal Home Loan Bank (“FHLB”) and Federal Reserve Bank Stocks: The Corporation is required to maintain Federal Reserve stock and FHLB stock as a member of both the Federal Reserve System and the FHLB, and in amounts as required by these institutions. These equity securities are “restricted” in that they can only be sold back to the respective institutions or another member institution at par. Therefore, they are less liquid than other marketable equity securities and their fair value is equal to amortized cost. The Corporation had FHLB stock of $118 million at September 30, 2014 and $110 million at December 31, 2013 and Federal Reserve Bank stock of $71 million at both September 30, 2014 and December 31, 2013.

Loans_Allowance_for_Loan_Losse

Loans Allowance for Loan Losses and Credit Quality	9 Months Ended
	Sep. 30, 2014
Loans Allowance for Loan Losses and Credit Quality Disclosure [Line Items]	'
Loans, Allowance for Loan Losses, and Credit Quality	'
	NOTE 6: Loans, Allowance for Credit Losses, and Credit Quality
	The period end loan composition was as follows.
						September 30,			December 31,
						2014			2013
						($ in Thousands)
	Commercial and industrial				$	5,603,899		$	4,822,680
	Commercial real estate - owner occupied					1,014,335			1,114,715
	Lease financing					52,600			55,483
		Commercial and business lending				6,670,834			5,992,878
	Commercial real estate - investor					3,043,361			2,939,456
	Real estate construction					982,426			896,248
		Commercial real estate lending				4,025,787			3,835,704
			Total commercial			10,696,621			9,828,582
	Home equity					1,676,525			1,825,014
	Installment and credit cards					459,682			407,074
	Residential mortgage					4,326,262			3,835,591
			Total consumer			6,462,469			6,067,679
				Total loans	$	17,159,090		$	15,896,261
	A summary of the changes in the allowance for credit losses was as follows.
			Nine Months Ended			Year Ended
			30-Sep-14			31-Dec-13
				($ in Thousands)
	Allowance for Loan Losses:
	Balance at beginning of period		$	268,315		$	297,409
	Provision for loan losses			8,500			10,000
	Charge offs			-35,318			-88,061
	Recoveries			24,765			48,967
		Net charge offs		-10,553			-39,094
	Balance at end of period		$	266,262		$	268,315
	Allowance for Unfunded Commitments:
	Balance at beginning of period		$	21,900		$	21,800
	Provision for unfunded commitments			2,500			100
	Balance at end of period		$	24,400		$	21,900
	Allowance for Credit Losses		$	290,662		$	290,215
	The level of the allowance for loan losses represents management's estimate of an amount appropriate to provide for probable credit losses in the loan portfolio at the balance sheet date. In general, the change in the allowance for loan losses is a function of a number of factors, including but not limited to changes in the loan portfolio, net charge offs, trends in past due and impaired loans, and the level of potential problem loans. Management considers the allowance for loan losses a critical accounting policy, as assessing these numerous factors involves significant judgment.
	The allowance for unfunded commitments is maintained at a level believed by management to be sufficient to absorb estimated probable losses related to unfunded credit facilities (including unfunded loan commitments and letters of credit) and is included in accrued expenses and other liabilities on the consolidated balance sheets. The determination of the appropriate level of the allowance for unfunded commitments is based upon an evaluation of the unfunded credit facilities, including an assessment of historical commitment utilization experience and credit risk grading of the loan. Net adjustments to the allowance for unfunded commitments are included in provision for credit losses in the consolidated statements of income. See Note 12 for additional information on the allowance for unfunded commitments.
	A summary of the changes in the allowance for loan losses by portfolio segment for the nine months ended September 30, 2014, was as follows.
	$ in Thousands	Commercial and industrial		Commercial real estate - owner occupied		Lease financing		Commercial real estate - investor		Real estate construction			Home equity	Installment and credit cards		Residential mortgage			Total
	Balance at Dec 31, 2013	$	104,501	$	19,476	$	1,607	$	58,156	$	23,418	$	32,196	$	2,416	$	26,545	$	268,315
	Provision for loan losses		18,700		1,098		777		-14,292		-3,831		1,278		3,486		1,284		8,500
	Charge offs		-11,421		-2,963		-29		-4,358		-1,761		-9,713		-1,751		-3,322		-35,318
	Recoveries		9,501		1,427		6		9,693		503		2,546		481		608		24,765
	Balance at Sep 30, 2014	$	121,281	$	19,038	$	2,361	$	49,199	$	18,329	$	26,307	$	4,632	$	25,115	$	266,262
	Allowance for loan losses:
	Ending balance impaired loans individually evaluated for impairment	$	14,006	$	1,672	$	735	$	1,829	$	1,140	$	11	$	-	$	588	$	19,981
	Ending balance impaired loans collectively evaluated for impairment	$	3,590	$	2,404	$	4	$	2,429	$	1,021	$	12,480	$	339	$	11,503	$	33,770
	Total impaired loans	$	17,596	$	4,076	$	739	$	4,258	$	2,161	$	12,491	$	339	$	12,091	$	53,751
	Ending balance all other loans collectively evaluated for impairment	$	103,685	$	14,962	$	1,622	$	44,941	$	16,168	$	13,816	$	4,293	$	13,024	$	212,511
	Total	$	121,281	$	19,038	$	2,361	$	49,199	$	18,329	$	26,307	$	4,632	$	25,115	$	266,262
	Loans:
	Ending balance impaired loans individually evaluated for impairment	$	45,242	$	17,927	$	1,938	$	21,204	$	6,026	$	1,025	$	-	$	10,390	$	103,752
	Ending balance impaired loans collectively evaluated for impairment	$	42,856	$	17,987	$	9	$	28,342	$	2,966	$	30,818	$	1,759	$	60,252	$	184,989
	Total impaired loans	$	88,098	$	35,914	$	1,947	$	49,546	$	8,992	$	31,843	$	1,759	$	70,642	$	288,741
	Ending balance all other loans collectively evaluated for impairment	$	5,515,801	$	978,421	$	50,653	$	2,993,815	$	973,434	$	1,644,682	$	457,923	$	4,255,620	$	16,870,349
	Total	$	5,603,899	$	1,014,335	$	52,600	$	3,043,361	$	982,426	$	1,676,525	$	459,682	$	4,326,262	$	17,159,090
	The allocation methodology used by the Corporation includes allocations for specifically identified impaired loans and loss factor allocations (used for both criticized and non-criticized loan categories), with a component primarily based on historical loss rates and a component primarily based on other qualitative factors. Management allocates the allowance for loan losses by pools of risk within each loan portfolio. The allocation of the allowance for loan losses by loan portfolio is made for analytical purposes and is not necessarily indicative of the trend of future loan losses in any particular category. The total allowance for loan losses is available to absorb losses from any segment of the loan portfolio.
	For comparison purposes, a summary of the changes in the allowance for loan losses by portfolio segment for the year ended December 31, 2013, was as follows.
	$ in Thousands	Commercial and industrial		Commercial real estate - owner occupied			Lease financing	Commercial real estate - investor		Real estate construction		Home equity		Installment		Residential mortgage			Total
	Balance at Dec 31, 2012	$	97,852	$	27,389	$	3,024	$	63,181	$	20,741	$	56,826	$	4,299	$	24,097	$	297,409
	Provision for loan losses		12,930		-1,778		-1,429		-2,140		541		-8,213		-2,127		12,216		10,000
	Charge offs		-35,146		-6,474		-206		-9,846		-3,375		-20,629		-1,389		-10,996		-88,061
	Recoveries		28,865		339		218		6,961		5,511		4,212		1,633		1,228		48,967
	Balance at Dec 31, 2013	$	104,501	$	19,476	$	1,607	$	58,156	$	23,418	$	32,196	$	2,416	$	26,545	$	268,315
Allowance for loan losses:
Ending balance impaired loans individually evaluated for impairment	$	7,994	$	1,019	$	-	$	3,932	$	254	$	123	$	-	$	315	$	13,637
Ending balance impaired loans collectively evaluated for impairment	$	3,923	$	1,936	$	29	$	3,963	$	2,162	$	13,866	$	487	$	11,872	$	38,238
Total impaired loans	$	11,917	$	2,955	$	29	$	7,895	$	2,416	$	13,989	$	487	$	12,187	$	51,875
Ending balance all other loans collectively evaluated for impairment	$	92,584	$	16,521	$	1,578	$	50,261	$	21,002	$	18,207	$	1,929	$	14,358	$	216,440
Total	$	104,501	$	19,476	$	1,607	$	58,156	$	23,418	$	32,196	$	2,416	$	26,545	$	268,315
Loans:
Ending balance impaired loans individually evaluated for impairment	$	29,343	$	24,744	$	-	$	32,367	$	3,777	$	929	$	-	$	10,526	$	101,686
Ending balance impaired loans collectively evaluated for impairment	$	40,893	$	17,929	$	69	$	50,175	$	6,483	$	33,871	$	1,360	$	56,947	$	207,727
Total impaired loans	$	70,236	$	42,673	$	69	$	82,542	$	10,260	$	34,800	$	1,360	$	67,473	$	309,413
Ending balance all other loans collectively evaluated for impairment	$	4,752,444	$	1,072,042	$	55,414	$	2,856,914	$	885,988	$	1,790,214	$	405,714	$	3,768,118	$	15,586,848
Total	$	4,822,680	$	1,114,715	$	55,483	$	2,939,456	$	896,248	$	1,825,014	$	407,074	$	3,835,591	$	15,896,261
The following table presents commercial loans by credit quality indicator at September 30, 2014.
		Pass		Special Mention		Potential Problem		Impaired		Total
		($ in Thousands)
Commercial and industrial	$	5,268,521	$	113,864	$	133,416	$	88,098	$	5,603,899
Commercial real estate - owner occupied		900,306		29,107		49,008		35,914		1,014,335
Lease financing		45,506		1,360		3,787		1,947		52,600
Commercial and business lending		6,214,333		144,331		186,211		125,959		6,670,834
Commercial real estate - investor		2,930,817		34,524		28,474		49,546		3,043,361
Real estate construction		967,914		3,293		2,227		8,992		982,426
Commercial real estate lending		3,898,731		37,817		30,701		58,538		4,025,787
Total commercial	$	10,113,064	$	182,148	$	216,912	$	184,497	$	10,696,621
The following table presents commercial loans by credit quality indicator at December 31, 2013.
		Pass		Special Mention		Potential Problem		Impaired		Total
		($ in Thousands)
Commercial and industrial	$	4,485,160	$	153,615	$	113,669	$	70,236	$	4,822,680
Commercial real estate - owner occupied		959,849		55,404		56,789		42,673		1,114,715
Lease financing		52,733		897		1,784		69		55,483
Commercial and business lending		5,497,742		209,916		172,242		112,978		5,992,878
Commercial real estate - investor		2,740,255		64,230		52,429		82,542		2,939,456
Real estate construction		877,911		2,814		5,263		10,260		896,248
Commercial real estate lending		3,618,166		67,044		57,692		92,802		3,835,704
Total commercial	$	9,115,908	$	276,960	$	229,934	$	205,780	$	9,828,582
The following table presents consumer loans by credit quality indicator at September 30, 2014.
		Performing		30-89 Days Past Due		Potential Problem		Impaired		Total
		($ in Thousands)
Home equity	$	1,633,033	$	10,738	$	911	$	31,843	$	1,676,525
Installment and credit cards		456,101		1,818		4		1,759		459,682
Residential mortgage		4,250,223		3,231		2,166		70,642		4,326,262
Total consumer	$	6,339,357	$	15,787	$	3,081	$	104,244	$	6,462,469
The following table presents consumer loans by credit quality indicator at December 31, 2013.
		Performing		30-89 Days Past Due		Potential Problem		Impaired		Total
		($ in Thousands)
Home equity	$	1,777,421	$	10,680	$	2,113	$	34,800	$	1,825,014
Installment		404,514		1,150		50		1,360		407,074
Residential mortgage		3,758,688		6,118		3,312		67,473		3,835,591
Total consumer	$	5,940,623	$	17,948	$	5,475	$	103,633	$	6,067,679
Factors that are important to managing overall credit quality are sound loan underwriting and administration, systematic monitoring of existing loans and commitments, effective loan review on an ongoing basis, early identification of potential problems, and appropriate allowance for credit losses, nonaccrual and charge off policies.
For commercial loans, management has determined the pass credit quality indicator to include credits that exhibit acceptable financial statements, cash flow, and leverage. If any risk exists, it is mitigated by the loan structure, collateral, monitoring, or control. For consumer loans, performing loans include credits that are performing in accordance with the original contractual terms. Loans are considered past due if the required principal and interest payments have not been received as of the date such payments were due. Special mention credits have potential weaknesses that deserve management's attention. If left uncorrected, these potential weaknesses may result in deterioration of the repayment prospects for the credit. Potential problem loans are considered inadequately protected by the current net worth and paying capacity of the obligor or the collateral pledged. These loans generally have a well-defined weakness, or weaknesses that may jeopardize liquidation of the debt and are characterized by the distinct possibility that the Corporation will sustain some loss if the deficiencies are not corrected. Lastly, management considers a loan to be impaired when it is probable that the Corporation will be unable to collect all amounts due according to the original contractual terms of the note agreement, including both principal and interest. Management has determined that commercial and consumer loan relationships that have nonaccrual status or have had their terms restructured in a troubled debt restructuring meet this impaired loan definition. Commercial loans classified as special mention, potential problem, and impaired are reviewed at a minimum on a quarterly basis, while pass and performing rated credits are reviewed on an annual basis or more frequently if the loan renewal is less than one year or if otherwise warranted.
The following table presents loans by past due status at September 30, 2014.
		30-59 Days Past Due		60-89 Days Past Due	90 Days or More Past Due *			Total Past Due		Current		Total
	($ in Thousands)
Accruing loans
Commercial and industrial	$	2,035	$	1,912	$	269	$	4,216	$	5,548,540	$	5,552,756
Commercial real estate - owner occupied		1,024		1,651		-		2,675		987,320		989,995
Lease financing		-		-		-		-		50,653		50,653
Commercial and business lending		3,059		3,563		269		6,891		6,586,513		6,593,404
Commercial real estate - investor		15,869		-		-		15,869		3,002,386		3,018,255
Real estate construction		299		100		-		399		973,840		974,239
Commercial real estate lending		16,168		100		-		16,268		3,976,226		3,992,494
Total commercial		19,227		3,663		269		23,159		10,562,739		10,585,898
Home equity		7,999		2,739		-		10,738		1,644,526		1,655,264
Installment and credit cards		1,106		712		1,369		3,187		455,842		459,029
Residential mortgage		2,944		287		52		3,283		4,271,478		4,274,761
Total consumer		12,049		3,738		1,421		17,208		6,371,846		6,389,054
Total accruing loans	$	31,276	$	7,401	$	1,690	$	40,367	$	16,934,585	$	16,974,952
Nonaccrual loans
Commercial and industrial	$	2,061	$	1,254	$	7,633	$	10,948	$	40,195	$	51,143
Commercial real estate - owner occupied		429		582		10,159		11,170		13,170		24,340
Lease financing		-		-		550		550		1,397		1,947
Commercial and business lending		2,490		1,836		18,342		22,668		54,762		77,430
Commercial real estate - investor		140		685		8,418		9,243		15,863		25,106
Real estate construction		64		56		1,061		1,181		7,006		8,187
Commercial real estate lending		204		741		9,479		10,424		22,869		33,293
Total commercial		2,694		2,577		27,821		33,092		77,631		110,723
Home equity		1,606		2,067		10,607		14,280		6,981		21,261
Installment and credit cards		57		49		138		244		409		653
Residential mortgage		3,934		2,657		22,117		28,708		22,793		51,501
Total consumer		5,597		4,773		32,862		43,232		30,183		73,415
Total nonaccrual loans **	$	8,291	$	7,350	$	60,683	$	76,324	$	107,814	$	184,138
Total loans
Commercial and industrial	$	4,096	$	3,166	$	7,902	$	15,164	$	5,588,735	$	5,603,899
Commercial real estate - owner occupied		1,453		2,233		10,159		13,845		1,000,490		1,014,335
Lease financing		-		-		550		550		52,050		52,600
Commercial and business lending		5,549		5,399		18,611		29,559		6,641,275		6,670,834
Commercial real estate - investor		16,009		685		8,418		25,112		3,018,249		3,043,361
Real estate construction		363		156		1,061		1,580		980,846		982,426
Commercial real estate lending		16,372		841		9,479		26,692		3,999,095		4,025,787
Total commercial		21,921		6,240		28,090		56,251		10,640,370		10,696,621
Home equity		9,605		4,806		10,607		25,018		1,651,507		1,676,525
Installment and credit cards		1,163		761		1,507		3,431		456,251		459,682
Residential mortgage		6,878		2,944		22,169		31,991		4,294,271		4,326,262
Total consumer		17,646		8,511		34,283		60,440		6,402,029		6,462,469
Total loans	$	39,567	$	14,751	$	62,373	$	116,691	$	17,042,399	$	17,159,090
* The recorded investment in loans past due 90 days or more and still accruing totaled $2 million at September 30, 2014 (the same as the reported balances for the accruing loans noted above). ** The percent of nonaccrual loans which are current was 59% at September 30, 2014.
The following table presents loans by past due status at December 31, 2013.
		30-59 Days Past Due		60-89 Days Past Due	90 Days or More Past Due *			Total Past Due		Current		Total
	($ in Thousands)
Accruing loans
Commercial and industrial	$	3,390	$	3,436	$	1,199	$	8,025	$	4,776,936	$	4,784,961
Commercial real estate - owner occupied		1,015		2,091		-		3,106		1,081,945		1,085,051
Lease financing		-		-		-		-		55,414		55,414
Commercial and business lending		4,405		5,527		1,199		11,131		5,914,295		5,925,426
Commercial real estate - investor		9,081		14,134		-		23,215		2,878,645		2,901,860
Real estate construction		836		1,118		-		1,954		887,827		889,781
Commercial real estate lending		9,917		15,252		-		25,169		3,766,472		3,791,641
Total commercial		14,322		20,779		1,199		36,300		9,680,767		9,717,067
Home equity		8,611		2,069		346		11,026		1,788,821		1,799,847
Installment		885		265		637		1,787		404,173		405,960
Residential mortgage		5,253		865		168		6,286		3,781,673		3,787,959
Total consumer		14,749		3,199		1,151		19,099		5,974,667		5,993,766
Total accruing loans	$	29,071	$	23,978	$	2,350	$	55,399	$	15,655,434	$	15,710,833
Nonaccrual loans
Commercial and industrial	$	998	$	1,764	$	9,765	$	12,527	$	25,192	$	37,719
Commercial real estate - owner occupied		2,482		1,724		11,125		15,331		14,333		29,664
Lease financing		-		-		69		69		-		69
Commercial and business lending		3,480		3,488		20,959		27,927		39,525		67,452
Commercial real estate - investor		3,408		899		20,466		24,773		12,823		37,596
Real estate construction		2,376		-		2,267		4,643		1,824		6,467
Commercial real estate lending		5,784		899		22,733		29,416		14,647		44,063
Total commercial		9,264		4,387		43,692		57,343		54,172		111,515
Home equity		1,725		1,635		14,331		17,691		7,476		25,167
Installment		129		24		289		442		672		1,114
Residential mortgage		3,199		3,257		26,201		32,657		14,975		47,632
Total consumer		5,053		4,916		40,821		50,790		23,123		73,913
Total nonaccrual loans**	$	14,317	$	9,303	$	84,513	$	108,133	$	77,295	$	185,428
Total loans
Commercial and industrial	$	4,388	$	5,200	$	10,964	$	20,552	$	4,802,128	$	4,822,680
Commercial real estate - owner occupied		3,497		3,815		11,125		18,437		1,096,278		1,114,715
Lease financing		-		-		69		69		55,414		55,483
Commercial and business lending		7,885		9,015		22,158		39,058		5,953,820		5,992,878
Commercial real estate - investor		12,489		15,033		20,466		47,988		2,891,468		2,939,456
Real estate construction		3,212		1,118		2,267		6,597		889,651		896,248
Commercial real estate lending		15,701		16,151		22,733		54,585		3,781,119		3,835,704
Total commercial		23,586		25,166		44,891		93,643		9,734,939		9,828,582
Home equity		10,336		3,704		14,677		28,717		1,796,297		1,825,014
Installment		1,014		289		926		2,229		404,845		407,074
Residential mortgage		8,452		4,122		26,369		38,943		3,796,648		3,835,591
Total consumer		19,802		8,115		41,972		69,889		5,997,790		6,067,679
Total loans	$	43,388	$	33,281	$	86,863	$	163,532	$	15,732,729	$	15,896,261
* The recorded investment in loans past due 90 days or more and still accruing totaled $2 million at December 31, 2013 (the same as the reported balances for the accruing loans noted above). ** The percent of nonaccrual loans which are current was 42% at December 31, 2013.
The following table presents impaired loans at September 30, 2014.
		Recorded Investment		Unpaid Principal Balance		Related Allowance		YTD Average Recorded Investment		YTD Interest Income Recognized(a)
Loans with a related allowance		($ in Thousands)
Commercial and industrial	$	74,410	$	76,852	$	17,596	$	74,470	$	2,548
Commercial real estate - owner occupied		23,250		25,849		4,076		24,412		585
Lease financing		1,946		1,946		739		2,074		-
Commercial and business lending		99,606		104,647		22,411		100,956		3,133
Commercial real estate - investor		38,566		42,836		4,258		40,288		988
Real estate construction		5,778		8,576		2,161		6,702		158
Commercial real estate lending		44,344		51,412		6,419		46,990		1,146
Total commercial		143,950		156,059		28,830		147,946		4,279
Home equity		30,996		34,392		12,491		31,842		1,105
Installment and credit cards		1,759		1,979		339		1,864		41
Residential mortgage		62,916		67,457		12,091		63,920		1,526
Total consumer		95,671		103,828		24,921		97,626		2,672
Total loans	$	239,621	$	259,887	$	53,751	$	245,572	$	6,951
Loans with no related allowance
Commercial and industrial	$	13,688	$	21,230	$	-	$	16,781	$	46
Commercial real estate - owner occupied		12,664		14,996		-		13,775		36
Lease financing		1		-		-		-		-
Commercial and business lending		26,353		36,226		-		30,556		82
Commercial real estate - investor		10,980		17,169		-		12,556		133
Real estate construction		3,214		3,904		-		3,313		-
Commercial real estate lending		14,194		21,073		-		15,869		133
Total commercial		40,547		57,299		-		46,425		215
Home equity		847		859		-		864		15
Installment and credit cards		-		-		-		-		-
Residential mortgage		7,726		7,845		-		7,774		104
Total consumer		8,573		8,704		-		8,638		119
Total loans	$	49,120	$	66,003	$	-	$	55,063	$	334
Total
Commercial and industrial	$	88,098	$	98,082	$	17,596	$	91,251	$	2,594
Commercial real estate - owner occupied		35,914		40,845		4,076		38,187		621
Lease financing		1,947		1,946		739		2,074		-
Commercial and business lending		125,959		140,873		22,411		131,512		3,215
Commercial real estate - investor		49,546		60,005		4,258		52,844		1,121
Real estate construction		8,992		12,480		2,161		10,015		158
Commercial real estate lending		58,538		72,485		6,419		62,859		1,279
Total commercial		184,497		213,358		28,830		194,371		4,494
Home equity		31,843		35,251		12,491		32,706		1,120
Installment and credit cards		1,759		1,979		339		1,864		41
Residential mortgage		70,642		75,302		12,091		71,694		1,630
Total consumer		104,244		112,532		24,921		106,264		2,791
Total loans(b)	$	288,741	$	325,890	$	53,751	$	300,635	$	7,285
(a) Interest income recognized included $4 million of interest income recognized on accruing restructured loans for the nine months ended September 30, 2014.
(b) The implied fair value mark on all impaired loans at September 30, 2014, was 72% of their unpaid principal balance. The fair value mark is calculated as the recorded investment, net of the related allowance, divided by the unpaid principal balance.
The following table presents impaired loans at December 31, 2013.
		Recorded Investment		Unpaid Principal Balance		Related Allowance		YTD Average Recorded Investment		YTD Interest Income Recognized (a)
Loans with a related allowance		($ in Thousands)
Commercial and industrial	$	57,857	$	65,443	$	11,917	$	61,000	$	1,741
Commercial real estate - owner occupied		22,651		25,072		2,955		24,549		995
Lease financing		69		69		29		76		-
Commercial and business lending		80,577		90,584		14,901		85,625		2,736
Commercial real estate - investor		64,647		68,228		7,895		68,776		2,735
Real estate construction		8,815		12,535		2,416		9,796		236
Commercial real estate lending		73,462		80,763		10,311		78,572		2,971
Total commercial		154,039		171,347		25,212		164,197		5,707
Home equity		34,707		40,344		13,989		36,623		1,518
Installment		1,360		1,676		487		1,753		100
Residential mortgage		60,157		69,699		12,187		62,211		1,861
Total consumer		96,224		111,719		26,663		100,587		3,479
Total loans	$	250,263	$	283,066	$	51,875	$	264,784	$	9,186
Loans with no related allowance
Commercial and industrial	$	12,379	$	19,556	$	-	$	14,291	$	306
Commercial real estate - owner occupied		20,022		22,831		-		20,602		315
Lease financing		-		-		-		-		-
Commercial and business lending		32,401		42,387		-		34,893		621
Commercial real estate - investor		17,895		25,449		-		19,354		130
Real estate construction		1,445		1,853		-		1,576		13
Commercial real estate lending		19,340		27,302		-		20,930		143
Total commercial		51,741		69,689		-		55,823		764
Home equity		93		92		-		94		2
Installment		-		-		-		-		-
Residential mortgage		7,316		8,847		-		7,321		185
Total consumer		7,409		8,939		-		7,415		187
Total loans	$	59,150	$	78,628	$	-	$	63,238	$	951
Total
Commercial and industrial	$	70,236	$	84,999	$	11,917	$	75,291	$	2,047
Commercial real estate - owner occupied		42,673		47,903		2,955		45,151		1,310
Lease financing		69		69		29		76		-
Commercial and business lending		112,978		132,971		14,901		120,518		3,357
Commercial real estate - investor		82,542		93,677		7,895		88,130		2,865
Real estate construction		10,260		14,388		2,416		11,372		249
Commercial real estate lending		92,802		108,065		10,311		99,502		3,114
Total commercial		205,780		241,036		25,212		220,020		6,471
Home equity		34,800		40,436		13,989		36,717		1,520
Installment		1,360		1,676		487		1,753		100
Residential mortgage		67,473		78,546		12,187		69,532		2,046
Total consumer		103,633		120,658		26,663		108,002		3,666
Total loans (b)	$	309,413	$	361,694	$	51,875	$	328,022	$	10,137
(a) Interest income recognized included $6 million of interest income recognized on accruing restructured loans for the year ended December 31, 2013.
(b) The implied fair value mark on all impaired loans at December 31, 2013, was 71% of their unpaid principal balance. The fair value mark is calculated as the recorded investment, net of the related allowance, divided by the unpaid principal balance.
Loans are considered past due if the required principal and interest payments have not been received as of the date such payments were due. Loans are generally placed on nonaccrual status when contractually past due 90 days or more as to interest or principal payments, unless the loan is well secured and in the process of collection. Additionally, whenever management becomes aware of facts or circumstances that may adversely impact the collectability of principal or interest on loans, it is management's practice to place such loans on nonaccrual status immediately, rather than delaying such action until the loans become 90 days past due. When a loan is placed on nonaccrual status, previously accrued and uncollected interest is reversed, amortization of related deferred loan fees or costs is suspended, and income is recorded only to the extent that interest payments are subsequently received in cash and a determination has been made that the principal and interest of the loan is collectible. If collectability of the principal and interest is in doubt, payments received are applied to loan principal.
While an asset is in nonaccrual status, some or all of the cash interest payments received may be treated as interest income on a cash basis as long as the remaining recorded investment in the asset (i.e., after charge off of identified losses, if any) is deemed to be fully collectible. The determination as to the ultimate collectability of the asset's remaining recorded investment must be supported by a current, well documented credit evaluation of the borrower's financial condition and prospects for repayment, including consideration of the borrower's sustained historical repayment performance and other relevant factors. A nonaccrual loan is returned to accrual status when all delinquent principal and interest payments become current in accordance with the terms of the loan agreement, the borrower has demonstrated a period of sustained repayment performance, and the ultimate collectability of the total contractual principal and interest is no longer in doubt. A sustained period of repayment performance generally would be a minimum of six months.
Troubled Debt Restructurings (“Restructured Loans”):
Loans are considered restructured loans if concessions have been granted to borrowers that are experiencing financial difficulty. The concessions granted generally involve the modification of terms of the loan, such as changes in payment schedule or interest rate, which generally would not otherwise be considered. Restructured loans can involve loans remaining on nonaccrual, moving to nonaccrual, or continuing on accrual status, depending on the individual facts and circumstances of the borrower. Nonaccrual restructured loans are included and treated with all other nonaccrual loans. In addition, all accruing restructured loans are reported as troubled debt restructurings, which are considered and accounted for as impaired loans. Generally, restructured loans remain on nonaccrual until the customer has attained a sustained period of repayment performance under the modified loan terms (generally a minimum of six months). However, performance prior to the restructuring, or significant events that coincide with the restructuring, are considered in assessing whether the borrower can meet the new terms and whether the loan should be returned to or maintained on accrual status. If the borrower's ability to meet the revised payment schedule is not reasonably assured, the loan remains on nonaccrual status. The Corporation had a $26 million recorded investment in loans modified in a troubled debt restructuring for the nine months ended September 30, 2014, of which $10 million were in accrual status and $16 million were in nonaccrual pending a sustained period of repayment.
All restructured loans are considered impaired in the calendar year of restructuring. In subsequent years, a restructured loan may cease being classified as impaired if the loan was modified at a market rate and has performed according to the modified terms for at least six months. A loan that has been modified at a below market rate will return to performing status if it satisfies the six month performance requirement; however, it will remain classified as a restructured loan. The following table presents nonaccrual and performing restructured loans by loan portfolio.
		30-Sep-14						31-Dec-13
		Performing Restructured Loans			Nonaccrual Restructured Loans *			Performing Restructured Loans			Nonaccrual Restructured Loans *
		($ in Thousands)
Commercial and industrial	$	36,956		$	4,759		$	32,517		$	6,900
Commercial real estate - owner occupied		11,574			8,031			13,009			10,999
Commercial real estate - investor		24,439			17,472			44,946			18,069
Real estate construction		805			2,833			3,793			2,065
Home equity		10,582			6,729			9,633			5,419
Installment and credit cards		1,106			230			246			451
Residential mortgage		19,141			23,260			19,841			15,682
Total	$	104,603		$	63,314		$	123,985		$	59,585
* Nonaccrual restructured loans have been included with nonaccrual loans.
The following table provides the number of loans modified in a troubled debt restructuring by loan portfolio during the three and nine months ended September 30, 2014, and the recorded investment and unpaid principal balance as of September 30, 2014.
		Three Months Ended September 30, 2014						Nine Months Ended September 30, 2014
		Number of Loans		Recorded Investment (1)		Unpaid Principal Balance (2)		Number of Loans		Recorded Investment (1)		Unpaid Principal Balance (2)
		($ in Thousands)
Commercial and industrial		10	$	7,383	$	7,384		13	$	7,695	$	7,707
Commercial real estate - owner occupied		―		―		―		2		1,123		1,260
Commercial real estate - investor		3		5,603		5,918		4		6,096		6,425
Real estate construction		1		8		8		2		14		14
Home equity		42		1,428		1,486		94		3,407		3,593
Installment and credit cards		2		25		25		3		34		45
Residential mortgage		45		4,057		4,347		85		8,004		8,555
Total		103	$	18,504	$	19,168		203	$	26,373	$	27,599
(1) Represents post-modification outstanding recorded investment.
(2) Represents pre-modification outstanding recorded investment.
The following table provides the number of loans modified in a troubled debt restructuring by loan portfolio during the three and nine months ended September 30, 2013, and the recorded investment and unpaid principal balance as of September 30, 2013.
		Three Months Ended September 30, 2013						Nine Months Ended September 30, 2013
		Number of Loans		Recorded Investment (1)		Unpaid Principal Balance (2)		Number of Loans		Recorded Investment (1)		Unpaid Principal Balance (2)
		($ in Thousands)
Commercial and industrial		19	$	5,479	$	6,384		58	$	11,379	$	14,028
Commercial real estate - owner occupied		7		3,373		3,488		17		9,313		9,596
Commercial real estate - investor		10		1,222		1,304		18		5,013		5,320
Real estate construction		3		227		248		9		2,006		2,084
Home equity		16		933		985		74		4,149		4,554
Installment		―		―		―		2		187		193
Residential mortgage		19		1,664		1,826		71		6,744		7,619
Total		74	$	12,898	$	14,235		249	$	38,791	$	43,394
(1) Represents post-modification outstanding recorded investment.
(2) Represents pre-modification outstanding recorded investment.
Restructured loan modifications may include payment schedule modifications, interest rate concessions, maturity date extensions, modification of note structure (A/B Note), non-reaffirmed Chapter 7 bankruptcies, principal reduction, or some combination of these concessions. During the three and nine months ended September 30, 2014, restructured loan modifications of commercial and industrial, commercial real estate and real estate construction loans primarily included maturity date extensions and payment schedule modifications. Restructured loan modifications of home equity and residential mortgage loans for the three and nine months ended September 30, 2014, primarily included maturity date extensions, interest rate concessions, payment schedule modifications, non-reaffirmed Chapter 7 bankruptcies, or a combination of these concessions.
The following table provides the number of loans modified in a troubled debt restructuring during the previous 12 months which subsequently defaulted during the three and nine months ended September 30, 2014, as well as the recorded investment in these restructured loans as of September 30, 2014.
		Three Months Ended September 30, 2014				Nine Months Ended September 30, 2014
		Number of Loans	Recorded Investment			Number of Loans		Recorded Investment
		($ in Thousands)
Commercial and industrial		―	$	―		1	$	52
Commercial real estate - owner occupied		―		―		2		203
Commercial real estate - investor		1		493		2		1,613
Real estate construction		―		―		1		160
Home equity		12		367		25		939
Installment and credit cards		1		10		3		34
Residential mortgage		18		1,502		50		4,743
Total		32	$	2,372		84	$	7,744
The following table provides the number of loans modified in a troubled debt restructuring during the previous 12 months which subsequently defaulted during the three and nine months ended September 30, 2013, as well as the recorded investment in these restructured loans as of September 30, 2013.
		Three Months Ended September 30, 2013				Nine Months Ended September 30, 2013
		Number of Loans	Recorded Investment			Number of Loans		Recorded Investment
		($ in Thousands)
Commercial and industrial		8	$	506		18	$	1,626
Commercial real estate - owner occupied		2		464		4		578
Commercial real estate - investor		1		405		5		1,992
Real estate construction		1		118		2		158
Home equity		4		147		12		699
Residential mortgage		8		1,150		15		2,385
Total		24	$	2,790		56	$	7,438
All loans modified in a troubled debt restructuring are evaluated for impairment. The nature and extent of the impairment of restructured loans, including those which have experienced a subsequent payment default, is considered in the determination of an appropriate level of the allowance for loan losses.

Goodwill_And_Other_Intangible_

Goodwill And Other Intangible Assets	9 Months Ended
	Sep. 30, 2014
Goodwill and Other Intangible Assets [Abstract]	'
Goodwill and Other Intangible Assets	'
	NOTE 7: Goodwill and Other Intangible Assets
	Goodwill: Goodwill is not amortized but, instead, is subject to impairment tests on at least an annual basis, and more frequently if an event occurs or circumstances change that would more likely than not reduce the fair value of a reporting unit below its carrying amount. The impairment testing process is conducted by assigning net assets and goodwill to each reporting unit. An initial qualitative evaluation is made to assess the likelihood of impairment and determine whether further quantitative testing to calculate the fair value is necessary. When the qualitative evaluation indicates that impairment is more likely than not, quantitative testing is required whereby the fair value of each reporting unit is calculated and compared to the recorded book value, “step one.” If the calculated fair value of the reporting unit exceeds its carrying value, goodwill is not considered impaired and “step two” is not considered necessary. If the carrying value of a reporting unit exceeds its calculated fair value, the impairment test continues (“step two”) by comparing the carrying value of the reporting unit's goodwill to the implied fair value of goodwill. The implied fair value is computed by adjusting all assets and liabilities of the reporting unit to current fair value with the offset adjustment to goodwill. The adjusted goodwill balance is the implied fair value of the goodwill. An impairment charge is recognized if the carrying value of goodwill exceeds the implied fair value of goodwill.
	The Corporation conducted its annual impairment testing in May 2014, utilizing a qualitative assessment. Factors that management considered in this assessment included macroeconomic conditions, industry and market considerations, overall financial performance of the Corporation and each reporting unit (both current and projected), changes in management strategy, and changes in the composition or carrying amount of net assets. In addition, management considered the increases in both the Corporation's common stock price and in the overall bank common stock index (based on the NASDAQ bank index), as well as the Corporation's earnings per common share trend over the past year. Based on these assessments, management concluded that the 2014 annual qualitative impairment assessment indicated that it is more likely than not that the estimated fair value exceeded the carrying value (including goodwill) for each reporting unit. Therefore, a step one quantitative analysis was not required. There were no impairment charges recorded in 2013 or through September 30, 2014.
	At September 30, 2014, the Corporation had goodwill of $929 million. There was no change in the carrying amount of goodwill for the nine months ended September 30, 2014, and the year ended December 31, 2013.
	Other Intangible Assets: The Corporation has other intangible assets that are amortized, consisting of core deposit intangibles, other intangibles (primarily related to customer relationships acquired in connection with the Corporation's insurance agency acquisitions), and mortgage servicing rights. For core deposit intangibles and other intangibles, changes in the gross carrying amount, accumulated amortization, and net book value were as follows.
		Nine Months Ended			Year Ended
		30-Sep-14			31-Dec-13
			($ in Thousands)
	Core deposit intangibles:
	Gross carrying amount	$	36,230		$	36,230
	Accumulated amortization		-33,878			-31,565
	Net book value	$	2,352		$	4,665
	Amortization during the period	$	2,313		$	3,122
	Other intangibles:
	Gross carrying amount	$	19,283		$	19,283
	Accumulated amortization		-13,423			-12,764
	Net book value	$	5,860		$	6,519
	Amortization during the period	$	659		$	921
	The Corporation sells residential mortgage loans in the secondary market and typically retains the right to service the loans sold. Upon sale, a mortgage servicing rights asset is capitalized, which represents the then current fair value of future net cash flows expected to be realized for performing servicing activities. Mortgage servicing rights, when purchased, are initially recorded at fair value. As the Corporation has not elected to subsequently measure any class of servicing assets under the fair value measurement method, the Corporation follows the amortization method. Mortgage servicing rights are amortized in proportion to and over the period of estimated net servicing income, and assessed for impairment at each reporting date. Mortgage servicing rights are carried at the lower of the initial capitalized amount, net of accumulated amortization, or estimated fair value, and are included in other intangible assets, net, in the consolidated balance sheets.
	The Corporation periodically evaluates its mortgage servicing rights asset for impairment. Impairment is assessed based on fair value at each reporting date using estimated prepayment speeds of the underlying mortgage loans serviced and stratifications based on the risk characteristics of the underlying loans (predominantly loan type and note interest rate). As mortgage interest rates fall, prepayment speeds are usually faster and the value of the mortgage servicing rights asset generally decreases, requiring additional valuation reserve. Conversely, as mortgage interest rates rise, prepayment speeds are usually slower and the value of the mortgage servicing rights asset generally increases, requiring less valuation reserve. A valuation allowance is established, through a charge to earnings, to the extent the amortized cost of the mortgage servicing rights exceeds the estimated fair value by stratification. If it is later determined that all or a portion of the temporary impairment no longer exists for a stratification, the valuation is reduced through a recovery to earnings. An other-than-temporary impairment (i.e., recoverability is considered remote when considering interest rates and loan pay off activity) is recognized as a write-down of the mortgage servicing rights asset and the related valuation allowance (to the extent a valuation allowance is available) and then against earnings. A direct write-down permanently reduces the carrying value of the mortgage servicing rights asset and valuation allowance, precluding subsequent recoveries. See Note 12 for a discussion of the recourse provisions on sold residential mortgage loans. See Note 13 which further discusses fair value measurement relative to the mortgage servicing rights asset.
	A summary of changes in the balance of the mortgage servicing rights asset and the mortgage servicing rights valuation allowance was as follows.
			Nine Months Ended			Year Ended
			30-Sep-14			31-Dec-13
				($ in Thousands)
	Mortgage servicing rights:
	Mortgage servicing rights at beginning of period		$	64,193		$	61,425
		Additions		5,844			18,256
		Amortization		-8,224			-15,488
	Mortgage servicing rights at end of period		$	61,813		$	64,193
	Valuation allowance at beginning of period			-913			-15,476
		Recoveries, net		89			14,563
	Valuation allowance at end of period			-824			-913
	Mortgage servicing rights, net		$	60,989		$	63,280
	Fair value of mortgage servicing rights		$	69,940		$	74,444
	Portfolio of residential mortgage loans serviced for others (“servicing portfolio”)			8,012,000			8,084,000
	Mortgage servicing rights, net to servicing portfolio			0.76	%		0.78	%
	Mortgage servicing rights expense (1)		$	8,135		$	925
	(1)       Includes the amortization of mortgage servicing rights and additions/recoveries to the valuation allowance of mortgage servicing rights, and is a component of mortgage banking, net, in the consolidated statements of income.
	The following table shows the estimated future amortization expense for amortizing intangible assets. The projections of amortization expense are based on existing asset balances, the current interest rate environment, and prepayment speeds as of September 30, 2014. The actual amortization expense the Corporation recognizes in any given period may be significantly different depending upon acquisition or sale activities, changes in interest rates, prepayment speeds, market conditions, regulatory requirements, and events or circumstances that indicate the carrying amount of an asset may not be recoverable.
		Core Deposit			Other			Mortgage Servicing
	Estimated amortization expense:	Intangibles			Intangibles			Rights
			($ in Thousands)
	Three months ending December 31, 2014	$	555		$	220		$	2,773
	Year ending December 31, 2015		1,404			839			9,760
	Year ending December 31, 2016		281			803			8,084
	Year ending December 31, 2017		112			770			6,727
	Year ending December 31, 2018		―			740			5,621
	Year ending December 31, 2019		―			441			4,721
	Beyond 2019		―			2,047			24,127
	Total Estimated Amortization Expense	$	2,352		$	5,860		$	61,813

Short_And_Longterm_Funding

Short And Long-term Funding	9 Months Ended
	Sep. 30, 2014
Debt Disclosure [Abstract]	'
Short and long-term funding	'
	NOTE 8: Short and Long-Term Funding
	The components of short-term funding (funding with original contractual maturities of one year or less) and long-term funding (funding with original contractual maturities greater than one year) were as follows.
				September 30,		December 31,
				2014		2013
				($ in Thousands)
	Short-Term Funding
	Federal funds purchased		$	272,190	$	56,195
	Securities sold under agreements to repurchase			493,451		419,247
		Federal funds purchased and securities sold under agreements to repurchase		765,641		475,442
	FHLB advances			605,000		200,000
	Commercial paper			59,539		65,484
		Other short-term funding		664,539		265,484
		Total short-term funding	$	1,430,180	$	740,926
	Long-Term Funding
	FHLB advances		$	2,500,268	$	2,500,297
	Senior notes, at par			430,000		585,000
	Other long-term funding and capitalized costs			1,279		1,970
		Total long-term funding	$	2,931,547	$	3,087,267
	Total short and long-term funding		$	4,361,727	$	3,828,193
	Short-term funding:
	The FHLB advances included in short-term funding are those with original contractual maturities of one year or less. The securities sold under agreements to repurchase represent short-term funding which is collateralized by securities of the U.S. Government or its agencies.
	Long-term funding:
	FHLB Advances: Long-term FHLB advances had a weighted-average interest rate of 0.10% for both September 30, 2014 and December 31, 2013. During the fourth quarter of 2013, the Corporation executed $2.5 billion of five year, variable rate FHLB advances that can be repaid, at our option, without penalty. The FHLB advances are indexed to the FHLB discount note and reprice at varying intervals, including $1.0 billion repricing at four week intervals, $750 million repricing at 13 week intervals, and $750 million repricing daily. The advances offer flexible, low cost, long-term funding that improves the Corporation's liquidity profile.
	2011 Senior Notes: In March 2011, the Corporation issued $300 million of senior notes due March 2016, and callable February 2016, with a 5.125% fixed coupon at a discount. In September 2011, the Corporation "re-opened" the offering and issued an additional $130 million of the same notes at a premium. The Corporation intends to refinance the 2011 Senior Notes prior to their maturity.
	2012 Senior Notes: In September 2012, the Corporation issued $155 million of senior notes, due March 2014, and callable February 2014, at a discount. These notes were called and redeemed in February 2014.

Income_Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2014
Income Taxes [Abstract]	'
Income Taxes	'
	NOTE 9: Income Taxes
	The Corporation recognized income tax expense of $67 million for the first nine months of 2014, compared to income tax expense of $65 million for the comparable period in 2013. The effective tax rate was 32.02% for the first nine months of 2014, compared to an effective tax rate of 31.68% for the first nine months of 2013.

Derivative_and_Hedging_Activit

Derivative and Hedging Activities	9 Months Ended
	Sep. 30, 2014
Derivative and Hedging Activities [Abstract]	'
Derivative and Hedging Activities	'
	NOTE 10: Derivative and Hedging Activities
	The Corporation facilitates customer borrowing activity by providing various interest rate risk management solutions through its capital markets area. To date, all of the notional amounts of customer transactions have been matched with a mirror swap with another counterparty. The Corporation has used, and may again use in the future, derivative instruments to hedge the variability in interest payments or protect the value of certain assets and liabilities recorded on its consolidated balance sheet from changes in interest rates. The predominant derivative and hedging activities include interest rate-related instruments (swaps and caps), foreign currency exchange forwards, written options, purchased options, and certain mortgage banking activities. The contract or notional amount of a derivative is used to determine, along with the other terms of the derivative, the amounts to be exchanged between the counterparties. The Corporation is exposed to credit risk in the event of nonperformance by counterparties to financial instruments. To mitigate the counterparty risk, interest rate-related instruments generally contain language outlining collateral pledging requirements for each counterparty. Collateral must be posted when the market value exceeds certain threshold limits which are determined from the credit ratings of each counterparty. The Corporation was required to pledge $11 million of investment securities as collateral at September 30, 2014, and pledged $42 million of investment securities as collateral at December 31, 2013. Under the Dodd-Frank Wall Street Reform and Consumer Protection Act, as of June 10, 2013, the Corporation must clear all LIBOR interest rate swaps through a clearing house if it can be cleared. As such, the Corporation is required to pledge cash collateral for the margin. At September 30, 2014, the Corporation posted cash collateral for the margin of $10 million, compared to $6 million at December 31, 2013.
	The Corporation's derivative and hedging instruments are recorded at fair value on the consolidated balance sheets. The fair value of the Corporation's interest rate-related instruments is determined using discounted cash flow analysis on the expected cash flows of each derivative and also includes a nonperformance / credit risk component (credit valuation adjustment). See Note 13 for additional fair value information and disclosures.
	The table below identifies the balance sheet category and fair values of the Corporation's derivative instruments not designated as hedging instruments.
									Weighted Average
	($ in Thousands)			Notional		Fair		Balance Sheet	Receive		Pay
				Amount		Value		Category	Rate(1)		Rate(1)		Maturity
	30-Sep-14
	Interest rate-related instruments — customer and mirror		$	1,665,024	$	31,862		Trading assets	1.62	%	1.62	%	41	months
	Interest rate-related instruments — customer and mirror			1,665,024		-34,071		Trading liabilities	1.62	%	1.62	%	41	months
	Interest rate lock commitments (mortgage)			145,037		1,440		Other assets	-		-			-
	Forward commitments (mortgage)			247,000		-623		Other liabilities	-		-			-
	Foreign currency exchange forwards			69,737		2,143		Trading assets	-		-			-
	Foreign currency exchange forwards			65,277		-1,932		Trading liabilities	-		-			-
	Purchased options (time deposit)			111,163		6,943		Other assets	-		-			-
	Written options (time deposit)			111,163		-6,943		Other liabilities	-		-			-
	31-Dec-13
	Interest rate-related instruments — customer and mirror		$	1,821,787	$	42,980		Trading assets	1.63	%	1.63	%	45	months
	Interest rate-related instruments — customer and mirror			1,821,787		-45,815		Trading liabilities	1.63	%	1.63	%	45	months
	Interest rate lock commitments (mortgage)			102,225		416		Other assets	-		-			-
	Forward commitments (mortgage)			135,000		1,301		Other assets	-		-			-
	Foreign currency exchange forwards			25,747		748		Trading assets	-		-			-
	Foreign currency exchange forwards			24,413		-655		Trading liabilities	-		-			-
	Purchased options (time deposit)			115,953		7,328		Other assets	-		-			-
	Written options (time deposit)			115,953		-7,328		Other liabilities	-		-			-
	-1	Reflects the weighted average receive rate and pay rate for the interest rate swap derivative financial instruments only.
	The table below identifies the income statement category of the gains and losses recognized in income on the Corporation's derivative instruments not designated as hedging instruments.
				Income Statement Category of		Gain / (Loss)
				Gain / (Loss) Recognized in Income		Recognized in Income
							($ in Thousands)
		Nine Months Ended September 30, 2014
		Interest rate-related instruments — customer and mirror, net		Capital market fees, net		$	626
		Interest rate lock commitments (mortgage)		Mortgage banking, net			1,024
		Forward commitments (mortgage)		Mortgage banking, net			-1,924
		Foreign currency exchange forwards		Capital market fees, net			118
		Nine Months Ended September 30, 2013
		Interest rate-related instruments — customer and mirror, net		Capital market fees, net		$	2,600
		Interest rate lock commitments (mortgage)		Mortgage banking, net			-4,234
		Forward commitments (mortgage)		Mortgage banking, net			-4,406
		Foreign currency exchange forwards		Capital market fees, net			4
	Free standing derivatives
	The Corporation enters into various derivative contracts which are designated as free standing derivative contracts. These derivative contracts are not designated against specific assets and liabilities on the balance sheet or forecasted transactions and, therefore, do not qualify for hedge accounting treatment. Such derivative contracts are carried at fair value on the consolidated balance sheet with changes in the fair value recorded as a component of Capital market fees, net, and typically include interest rate-related instruments (swaps and caps).
	Free standing derivative products are entered into primarily for the benefit of commercial customers seeking to manage their exposures to interest rate risk. The Corporation's market risk from unfavorable movements in interest rates related to these derivative contracts is generally economically hedged by concurrently entering into offsetting derivative contracts. The offsetting derivative contracts have identical notional values, terms and indices.
	Mortgage derivatives
	Interest rate lock commitments to originate residential mortgage loans held for sale and forward commitments to sell residential mortgage loans are considered derivative instruments, and the fair value of these commitments is recorded on the consolidated balance sheets with the changes in fair value recorded as a component of mortgage banking, net.
	Foreign currency derivatives
	The Corporation provides foreign exchange services to customers. The Corporation may enter into a foreign currency forward to mitigate the exchange rate risk attached to the cash flows of a loan or as an offsetting contract to a forward entered into as a service to our customer.
	Written and purchased option derivatives (time deposit)
	The Corporation has periodically entered into written and purchased option derivative instruments to facilitate an equity linked time deposit product (the “Power CD”). During September 2013, the Corporation terminated its Power CD product. The Power CD was a time deposit that provided the purchaser a guaranteed return of principal at maturity plus a potential equity return (a written option), while the Corporation received a known stream of funds based on the equity return (a purchased option). The written and purchased options are mirror derivative instruments which are carried at fair value on the consolidated balance sheets.

Balance_Sheet_Offsetting

Balance Sheet Offsetting	9 Months Ended
	Sep. 30, 2014
Balance Sheet Offsetting Disclosure [Abstract]	'
Balance Sheet Offsetting	'
	NOTE 11: Balance Sheet Offsetting
	Interest Rate-Related Instruments (“Interest Agreements”)
	The Corporation enters into interest rate-related instruments to facilitate the interest rate risk management strategies of commercial customers. The Corporation mitigates this risk by entering into equal and offsetting interest rate-related instruments with highly rated third party financial institutions. The interest agreements are free-standing derivatives and are recorded at fair value in the Corporation's consolidated balance sheet. The Corporation is party to master netting arrangements with its financial institution counterparties; however, the Corporation does not offset assets and liabilities under these arrangements for financial statement presentation purposes. The master netting arrangements provide for a single net settlement of all interest agreements, as well as collateral, in the event of default on, or termination of, any one contract. Collateral, usually in the form of investment securities and cash, is posted by the counterparty with net liability positions in accordance with contract thresholds. See Note 10 for additional information on the Corporation's derivative and hedging activities.
	Securities Sold Under Agreements to Repurchase (“Repurchase Agreements”)
	The Corporation enters into agreements under which it sells securities subject to an obligation to repurchase the same or similar securities. Under these arrangements, the Corporation may transfer legal control over the assets but still retain effective control through an agreement that both entitles and obligates the Corporation to repurchase the assets. As a result, these repurchase agreements are accounted for as collateralized financing arrangements (i.e., secured borrowings) and not as a sale and subsequent repurchase of securities. The obligation to repurchase the securities is reflected as a liability in the Corporation's consolidated balance sheet, while the securities underlying the repurchase agreements remain in the respective investment securities asset accounts (i.e., there is no offsetting or netting of the investment securities assets with the repurchase agreement liabilities). The right of setoff for a repurchase agreement resembles a secured borrowing, whereby the collateral would be used to settle the fair value of the repurchase agreement should the Corporation be in default (e.g., fails to make an interest payment to the counterparty). In addition, the Corporation does not enter into reverse repurchase agreements; therefore, there is no such offsetting to be done with the repurchase agreements.
	The following table presents the assets and liabilities subject to an enforceable master netting arrangement as of September 30, 2014 and December 31, 2013. The swap agreements we have with our commercial customers are not subject to an enforceable master netting arrangement, and therefore, are excluded from this table.
	30-Sep-14								Gross amounts not offset
		Gross		Gross amounts		Net amounts			in the balance sheet
		amounts		offset in the		presented in		Financial
		recognized		balance sheet		the balance sheet		instruments			Collateral	Net amount
		($ in Thousands)
	Derivative assets:
	Interest rate-related instruments	$	1,406	$	―	$	1,406	$	-1,406	$	―	$	―
	Derivative liabilities:
	Interest rate-related instruments	$	31,898	$	―	$	31,898	$	-1,406	$	-21,149	$	9,343
	31-Dec-13
	Derivative assets:
	Interest rate-related instruments	$	3,084	$	―	$	3,084	$	-3,082	$	―	$	2
	Derivative liabilities:
	Interest rate-related instruments	$	41,786	$	―	$	41,786	$	-3,082	$	-33,405	$	5,299

Commitments_OffBalance_Sheet_A

Commitments, Off-Balance Sheet Arrangements, and Contingent Liabilities	9 Months Ended
	Sep. 30, 2014
Commitments, off-balance Sheet Arrangements, and Contingent Liabilities [Abstract]	'
Commitments, off-balance Sheet Arrangements, and Contingent Liabilities	'
	NOTE 12: Commitments, Off-Balance Sheet Arrangements, and Contingent Liabilities
	The Corporation utilizes a variety of financial instruments in the normal course of business to meet the financial needs of its customers and to manage its own exposure to fluctuations in interest rates. These financial instruments include lending-related and other commitments (see below) and derivative instruments (see Note 10). During the second quarter of 2014, the Corporation reclassified certain letters of credit from commercial letters of credit to standby letters of credit. The letters of credit balances for December 31, 2013, have also been adjusted to reflect this change in classification. The following is a summary of lending-related commitments.
				30-Sep-14		31-Dec-13
				($ in Thousands)
	Commitments to extend credit, excluding commitments to originate residential
		mortgage loans held for sale(1)(2)	$	6,703,718	$	6,367,771
	Commercial letters of credit (1)			8,705		12,034
	Standby letters of credit (3)			352,445		370,773
	(1)       These off-balance sheet financial instruments are exercisable at the market rate prevailing at the date the underlying transaction will be completed and, thus, are deemed to have no current fair value, or the fair value is based on fees currently charged to enter into similar agreements and is not material at September 30, 2014 or December 31, 2013.
	(2)       Interest rate lock commitments to originate residential mortgage loans held for sale are considered derivative instruments and are disclosed in Note 10.
	(3)       The Corporation has established a liability of $4 million at both September 30, 2014 and December 31, 2013, as an estimate of the fair value of these financial instruments.
	Lending-related Commitments
	As a financial services provider, the Corporation routinely enters into commitments to extend credit. Such commitments are subject to the same credit policies and approval process accorded to loans made by the Corporation, with each customer's creditworthiness evaluated on a case-by-case basis. The commitments generally have fixed expiration dates or other termination clauses and may require the payment of a fee. The Corporation's exposure to credit loss in the event of nonperformance by the other party to these financial instruments is represented by the contractual amount of those instruments. The amount of collateral obtained, if deemed necessary by the Corporation upon extension of credit, is based on management's credit evaluation of the customer. Since a significant portion of commitments to extend credit are subject to specific restrictive loan covenants or may expire without being drawn upon, the total commitment amounts do not necessarily represent future cash flow requirements. An allowance for unfunded commitments is maintained at a level believed by management to be sufficient to absorb estimated probable losses related to unfunded commitments (including unfunded loan commitments and letters of credit). For September 30, 2014 and December 31, 2013, the Corporation had an allowance for unfunded commitments totaling $24 million and $22 million, respectively, included in accrued expenses and other liabilities on the consolidated balance sheets. See Note 6 for additional information on the allowance for unfunded commitments.
	Lending-related commitments include commitments to extend credit, commitments to originate residential mortgage loans held for sale, commercial letters of credit, and standby letters of credit. Commitments to extend credit are legally binding agreements to lend to customers at predetermined interest rates, as long as there is no violation of any condition established in the contracts. Interest rate lock commitments to originate residential mortgage loans held for sale and forward commitments to sell residential mortgage loans are considered derivative instruments, and the fair value of these commitments is recorded on the consolidated balance sheets. The Corporation's derivative and hedging activity is further described in Note 10. Commercial and standby letters of credit are conditional commitments issued to guarantee the performance of a customer to a third party. Commercial letters of credit are issued specifically to facilitate commerce and typically result in the commitment being drawn on when the underlying transaction is consummated between the customer and the third party, while standby letters of credit generally are contingent upon the failure of the customer to perform according to the terms of the underlying contract with the third party.
	Other Commitments
	The Corporation has principal investment commitments to provide capital-based financing to private and public companies through either direct investments in specific companies or through investment funds and partnerships. The timing of future cash requirements to fund such commitments is generally dependent on the investment cycle, whereby privately held companies are funded by private equity investors and ultimately sold, merged, or taken public through an initial offering, which can vary based on overall market conditions, as well as the nature and type of industry in which the companies operate. The Corporation also invests in low-income housing, small-business commercial real estate, new market tax credit projects, and historic tax credit projects to promote the revitalization of low-to-moderate-income neighborhoods throughout the local communities of its bank subsidiary. As a limited partner in these unconsolidated projects, the Corporation is allocated tax credits and deductions associated with the underlying projects. The aggregate carrying value of these investments at September 30, 2014 was $28 million, included in other assets on the consolidated balance sheets, compared to $33 million at December 31, 2013. Related to these investments, the Corporation had remaining commitments to fund of $15 million at September 30, 2014 and $16 million at December 31, 2013.
	Contingent Liabilities
	The Corporation is party to various pending and threatened claims and legal proceedings arising in the normal course of business activities, some of which involve claims for substantial amounts. Although there can be no assurance as to the ultimate outcomes, the Corporation believes it has meritorious defenses to the claims asserted against it in its currently outstanding matters, including the matters described below, and with respect to such legal proceedings, intends to continue to defend itself vigorously. The Corporation will consider settlement of cases when, in management's judgment, it is in the best interests of both the Corporation and its shareholders.
	On at least a quarterly basis, the Corporation assesses its liabilities and contingencies in connection with all pending or threatened claims and litigation, utilizing the most recent information available. On a matter by matter basis, an accrual for loss is established for those matters which the Corporation believes it is probable that a loss may be incurred and that the amount of such loss can be reasonably estimated. Once established, each accrual is adjusted as appropriate to reflect any subsequent developments. Accordingly, management's estimate will change from time to time, and actual losses may be more or less than the current estimate. For matters where a loss is not probable, or the amount of the loss cannot be estimated, no accrual is established.
	Resolution of legal claims is inherently unpredictable, and in many legal proceedings various factors exacerbate this inherent unpredictability, including where the damages sought are unsubstantiated or indeterminate, it is unclear whether a case brought as a class action will be allowed to proceed on that basis, discovery is not complete, the proceeding is not yet in its final stages, the matters present legal uncertainties, there are significant facts in dispute, there are a large number of parties (including where it is uncertain how liability, if any, will be shared among multiple defendants), or there is a wide range of potential results.
	A lawsuit, R.J. ZAYED v. Associated Bank, N.A., was filed in the United States District Court for the District of Minnesota on January 29, 2013. The lawsuit relates to a Ponzi scheme perpetrated by Oxford Global Partners and related entities (“Oxford”) and individuals and was brought by the receiver for Oxford. Oxford was a depository customer of Associated Bank, N.A. (the "Bank"). The lawsuit claims that the Bank is liable for failing to uncover the Oxford Ponzi scheme, and specifically alleges the Bank aided and abetted (1) the fraudulent scheme; (2) a breach of fiduciary duty; (3) conversion; and (4) false representations and omissions. The lawsuit seeks unspecified consequential and punitive damages. The District Court granted the Bank's motion to dismiss the complaint on September 30, 2013, and the plaintiff has appealed such dismissal to the U.S. Court of Appeals for the Eighth Circuit. It is not possible for management to assess the probability of a material adverse outcome or reasonably estimate the amount of any potential loss at this time. A lawsuit by investors in the same Ponzi scheme, Herman Grad, et al v. Associated Bank, N.A., brought in Brown County, Wisconsin in October 2009 was dismissed by the circuit court, and the dismissal was affirmed by the Wisconsin Court of Appeals in June 2011 in an unpublished opinion.
	A purported class action lawsuit, Wanda Boone v. Associated Banc-Corp, was filed on April 10, 2014 in the United States District Court for the Eastern District of Wisconsin. The lawsuit claimed that loan coordinators employed by the Bank were not compensated for all hours worked, including the payment of overtime, in violation of the Fair Labor Standards Act of 1938 and Wisconsin wage laws. On July 30, 2014, the case was dismissed with prejudice. As part of the resolution of this matter, the Corporation made an immaterial payment to the plaintiff.
	The Office of the Comptroller of the Currency (OCC) and the Department of Housing and Urban Development (HUD) are examining the Bank's compliance with fair housing laws, particularly from the period 2008-2011.  The Corporation believes it has been in compliance in all material respects with all applicable laws and regulations related to fair housing. It is not possible at this time for management to assess the probability of a material adverse outcome or reasonably estimate the amount of any potential loss related to such examinations by the OCC and HUD.
	During the last year, the Corporation has reviewed a variety of legacy products provided by third parties, including debt protection and identity protection products. In connection with this review, the Corporation has made, and plans to make, remediation payments to affected customers and former customers. See Part I, Item 2, “Management's Discussion and Analysis of Financial Condition and Results of Operations” sections “Noninterest Income,” “Comparable Third Quarter Results,” and “Sequential Quarter Results,” for additional information. These types of products have recently received increased regulatory scrutiny, and it is possible that regulatory authorities could bring enforcement actions, including civil money penalties, or take other actions against the Corporation in regard to these legacy products. It is not possible at this time for management to assess the probability of a material adverse outcome or reasonably estimate the amount of any potential loss related to this matter.
	The Corporation sells residential mortgage loans to investors in the normal course of business. Residential mortgage loans sold to others are predominantly conventional residential first lien mortgages originated under our usual underwriting procedures, and are most often sold on a nonrecourse basis, primarily to the government-sponsored enterprises ("GSEs"). The Corporation's agreements to sell residential mortgage loans in the normal course of business usually require certain representations and warranties on the underlying loans sold, related to credit information, loan documentation, collateral, and insurability. Subsequent to being sold, if a material underwriting deficiency or documentation defect is discovered, the Corporation may be obligated to repurchase the loan or reimburse the GSEs for losses incurred (collectively, "make whole requests"). The make whole requests and any related risk of loss under the representations and warranties are largely driven by borrower performance.
	As a result of make whole requests, the Corporation has repurchased loans with principal balances of $4 million and $3 million during the nine months ended September 30, 2014 and the year ended December 31, 2013, respectively, and paid loss reimbursement claims of $500,000 and $3 million during the nine months ended September 30, 2014 and the year ended December 31, 2013, respectively. The Corporation had a mortgage repurchase reserve for potential claims on loans previously sold of $3 million at September 30, 2014, compared to $6 million at December 31, 2013. Make whole requests during 2013 and the first nine months of 2014 generally arose from loans sold during the period January 1, 2006 to September 30, 2014, which totaled $18.4 billion at the time of sale, and consisted primarily of loans sold to GSEs. As of September 30, 2014, approximately $7.6 billion of these sold loans remain outstanding.
	The balance in the mortgage repurchase reserve at the balance sheet date reflects the estimated amount of potential loss the Corporation could incur from repurchasing a loan, as well as loss reimbursements, indemnifications, and other settlement resolutions. The following summarizes the changes in the mortgage repurchase reserve.
				For the Nine
				Months Ended		For the Year Ended
				30-Sep-14		31-Dec-13
				($ in Thousands)
	Balance at beginning of period		$	5,700	$	3,300
	Repurchase provision (recovery) expense			-1,883		5,909
	Charge offs			-417		-3,509
	Balance at end of period		$	3,400	$	5,700
	The Corporation may also sell residential mortgage loans with limited recourse (limited in that the recourse period ends prior to the loan's maturity, usually after certain time and / or loan paydown criteria have been met), whereby repurchase could be required if the loan had defined delinquency issues during the limited recourse periods. At September 30, 2014, and December 31, 2013, there were approximately $44 million and $56 million, respectively, of residential mortgage loans sold with such recourse risk. There have been limited instances and immaterial historical losses on repurchases for recourse under the limited recourse criteria.
	The Corporation has a subordinate position to the FHLB in the credit risk on residential mortgage loans it sold to the FHLB in exchange for a monthly credit enhancement fee. The Corporation has not sold loans to the FHLB with such credit risk retention since February 2005. At September 30, 2014 and December 31, 2013, there were $190 million and $233 million, respectively, of such residential mortgage loans with credit risk recourse, upon which there have been negligible historical losses to the Corporation.

Fair_Value_Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2014
Fair Value Measurements [Abstract]	'
Fair Value Measurements	'
	NOTE 13: Fair Value Measurements
	Fair value represents the estimated price at which an orderly transaction to sell an asset or to transfer a liability would take place between market participants at the measurement date under current market conditions (i.e., an exit price concept). As there is no active market for many of the Corporation's financial instruments, estimates are made using discounted cash flow or other valuation techniques. Inputs into the valuation methods are subjective in nature, involve uncertainties, and require significant judgment and therefore cannot be determined with precision. Accordingly, the derived fair value estimates presented herein are not necessarily indicative of the amounts the Corporation could realize in a current market exchange. Assets and liabilities are categorized into three levels based on the markets in which the assets and liabilities are traded and the reliability of the assumptions used to determine fair value. In instances where the determination of the fair value measurement is based on inputs from different levels of the fair value hierarchy, the level in the fair value hierarchy in which the entire fair value measurement falls is based on the lowest level input that is significant to the fair value measurement in its entirety. The Corporation's assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment, and considers factors specific to the asset or liability. Below is a brief description of each fair value level.
	Level 1 inputs	Level 1 inputs utilize quoted prices (unadjusted) in active markets for identical assets or liabilities that the Corporation has the ability to access.
	Level 2 inputs	Level 2 inputs are inputs other than quoted prices included in Level 1 that are observable for the asset or liability, either directly or indirectly. Level 2 inputs may include quoted prices for similar assets and liabilities in active markets, as well as inputs that are observable for the asset or liability (other than quoted prices), such as interest rates, foreign exchange rates, and yield curves that are observable at commonly quoted intervals.
	Level 3 inputs	Level 3 inputs are unobservable inputs for the asset or liability, which are typically based on an entity’s own assumptions, as there is little, if any, related market activity.
	Following is a description of the valuation methodologies used for the Corporation's more significant instruments measured on a recurring basis at fair value, including the general classification of such instruments pursuant to the valuation hierarchy.
	Investment securities available for sale: Where quoted prices are available in an active market, investment securities are classified in Level 1 of the fair value hierarchy. Level 1 investment securities primarily include U.S. Treasury, certain Federal agency, and exchange-traded debt and equity securities. If quoted market prices are not available for the specific security, then fair values are estimated by using pricing models, quoted prices of securities with similar characteristics or discounted cash flows, with consideration given to the nature of the quote and the relationship of recently evidenced market activity to the fair value estimate, and are classified in Level 2 of the fair value hierarchy. Examples of these investment securities include certain Federal agency securities, obligations of state and political subdivisions (municipal securities), mortgage-related securities, asset-backed securities, and other debt securities. Lastly, in certain cases where there is limited activity or less transparency around inputs to the estimated fair value, securities are classified within Level 3 of the fair value hierarchy. Level 3 securities primarily include pooled trust preferred and other debt securities. To validate the fair value estimates, assumptions, and controls, the Corporation looks to transactions for similar instruments and utilizes independent pricing provided by third party vendors or brokers and relevant market indices. While none of these sources are solely indicative of fair value, they serve as directional indicators for the appropriateness of the Corporation's fair value estimates. The Corporation has determined that the fair value measures of its investment securities are classified predominantly within Level 1 or 2 of the fair value hierarchy. See Note 5 for additional disclosure regarding the Corporation's investment securities.
	Derivative financial instruments (interest rate-related instruments): The Corporation has used, and may again use in the future, interest rate swaps to manage its interest rate risk. In addition, the Corporation offers customer interest rate-related instruments (swaps and caps) to service our customers' needs, for which the Corporation simultaneously enters into offsetting derivative financial instruments (i.e., mirror interest rate-related instruments) with third parties to manage its interest rate risk associated with these financial instruments. The valuation of the Corporation's derivative financial instruments is determined using discounted cash flow analysis on the expected cash flows of each derivative and, also includes a nonperformance / credit risk component (credit valuation adjustment). See Note 10 for additional disclosure regarding the Corporation's derivative financial instruments.
	The discounted cash flow analysis component in the fair value measurement reflects the contractual terms of the derivative financial instruments, including the period to maturity, and uses observable market-based inputs, including interest rate curves and implied volatilities. More specifically, the fair values of interest rate swaps are determined using the market standard methodology of netting the discounted future fixed cash receipts (or payments), with the variable cash payments (or receipts) based on an expectation of future interest rates (forward curves) derived from observable market interest rate curves. Likewise, the fair values of interest rate options (i.e., interest rate caps) are determined using the market standard methodology of discounting the future expected cash receipts that would occur if variable interest rates fall below (or rise above) the strike rate of the floors (or caps), with the variable interest rates used in the calculation of projected receipts on the floor (or cap) based on an expectation of future interest rates derived from observable market interest rate curves and volatilities.
	The Corporation also incorporates credit valuation adjustments to appropriately reflect both its own nonperformance risk and the respective counterparty's nonperformance risk in the fair value measurements. In adjusting the fair value of its derivative financial instruments for the effect of nonperformance risk, the Corporation has considered the impact of netting and any applicable credit enhancements, such as collateral postings, thresholds, mutual puts, and guarantees. In conjunction with the FASB's fair value measurement guidance, the Corporation made an accounting policy election to measure the credit risk of its derivative financial instruments that are subject to master netting agreements on a net basis by counterparty portfolio.
	While the Corporation has determined that the majority of the inputs used to value its derivative financial instruments fall within Level 2 of the fair value hierarchy, the credit valuation adjustments utilize Level 3 inputs, such as estimates of current credit spreads to evaluate the likelihood of default by itself and its counterparties. The Corporation has assessed the significance of the impact of the credit valuation adjustments on the overall valuation of its derivative positions as of September 30, 2014, and December 31, 2013, and has determined that the credit valuation adjustments are not significant to the overall valuation of its derivative financial instruments. Therefore, the Corporation has determined that the fair value measures of its derivative financial instruments in their entirety are classified within Level 2 of the fair value hierarchy.
	Derivative financial instruments (foreign currency exchange forwards): The Corporation provides foreign currency exchange services to customers. In addition, the Corporation may enter into a foreign currency exchange forward to mitigate the exchange rate risk attached to the cash flows of a loan or as an offsetting contract to a forward entered into as a service to our customer. The valuation of the Corporation's foreign currency exchange forwards is determined using quoted prices of foreign currency exchange forwards with similar characteristics, with consideration given to the nature of the quote and the relationship of recently evidenced market activity to the fair value estimate, and are classified in Level 2 of the fair value hierarchy. See Note 10 for additional disclosures regarding the Corporation's foreign currency exchange forwards.
	Derivative financial instruments (mortgage derivatives): Mortgage derivatives include interest rate lock commitments to originate residential mortgage loans held for sale to individual customers and forward commitments to sell residential mortgage loans to various investors. The Corporation relies on an internal valuation model to estimate the fair value of its interest rate lock commitments to originate residential mortgage loans held for sale, which includes grouping the interest rate lock commitments by interest rate and terms, applying an estimated pull-through rate based on historical experience, and then multiplying by quoted investor prices determined to be reasonably applicable to the loan commitment groups based on interest rate, terms, and rate lock expiration dates of the loan commitment groups.
	The Corporation also relies on an internal valuation model to estimate the fair value of its forward commitments to sell residential mortgage loans (i.e., an estimate of what the Corporation would receive or pay to terminate the forward delivery contract based on market prices for similar financial instruments), which includes matching specific terms and maturities of the forward commitments against applicable investor pricing available. While there are Level 2 and 3 inputs used in the valuation models, the Corporation has determined that the majority of the inputs significant in the valuation of both of the mortgage derivatives fall within Level 3 of the fair value hierarchy. See Note 10 for additional disclosure regarding the Corporation's mortgage derivatives.
	Following is a description of the valuation methodologies used for the Corporation's more significant instruments measured on a nonrecurring basis at the lower of amortized cost or estimated fair value, including the general classification of such instruments pursuant to the valuation hierarchy.
	Loans Held for Sale: Loans held for sale, which consist generally of current production of certain fixed-rate, first-lien residential mortgage loans, are carried at the lower of cost or estimated fair value. The estimated fair value was based on what secondary markets are currently offering for portfolios with similar characteristics, which the Corporation classifies as a Level 2 nonrecurring fair value measurement.
	Impaired Loans: The Corporation considers a loan impaired when it is probable that the Corporation will be unable to collect all amounts due according to the original contractual terms of the note agreement, including both principal and interest. Management has determined that commercial and consumer loan relationships that have nonaccrual status or have had their terms restructured in a troubled debt restructuring meet this impaired loan definition. For individually evaluated impaired loans, the amount of impairment is based upon the present value of expected future cash flows discounted at the loan's effective interest rate, the estimated fair value of the underlying collateral for collateral-dependent loans, or the estimated liquidity of the note. See Note 6 for additional information regarding the Corporation's impaired loans.
	Mortgage servicing rights: Mortgage servicing rights do not trade in an active, open market with readily observable prices. While sales of mortgage servicing rights do occur, the precise terms and conditions typically are not readily available to allow for a “quoted price for similar assets” comparison. Accordingly, the Corporation utilizes an independent valuation from a third party which uses a discounted cash flow model to estimate the fair value of its mortgage servicing rights. The valuation model incorporates prepayment assumptions to project mortgage servicing rights cash flows based on the current interest rate scenario, which is then discounted to estimate an expected fair value of the mortgage servicing rights. The valuation model considers portfolio characteristics of the underlying mortgages, contractually specified servicing fees, prepayment assumptions, discount rate assumptions, delinquency rates, late charges, other ancillary revenue, costs to service, and other economic factors. The Corporation periodically reviews and assesses the underlying inputs and assumptions used in the model. In addition, the Corporation compares its fair value estimates and assumptions to observable market data for mortgage servicing rights, where available, and to recent market activity and actual portfolio experience. Due to the nature of the valuation inputs, mortgage servicing rights are classified within Level 3 of the fair value hierarchy. The Corporation uses the amortization method (i.e., lower of amortized cost or estimated fair value measured on a nonrecurring basis), not fair value measurement accounting, for its mortgage servicing rights assets. See Note 7 for additional disclosure regarding the Corporation's mortgage servicing rights.
	The table below presents the Corporation's investment securities available for sale and derivative financial instruments measured at fair value on a recurring basis as of September 30, 2014 and December 31, 2013, aggregated by the level in the fair value hierarchy within which those measurements fall.
	Assets and Liabilities Measured at Fair Value on a Recurring Basis
							Fair Value Measurements Using
			30-Sep-14				Level 1			Level 2			Level 3
				($ in Thousands)
	Assets:
	Investment securities available for sale:
	U.S. Treasury securities		$	996		$	996		$	―		$	―
	Obligations of state and political subdivisions (municipal securities)			614,436			―			614,436			―
	Residential mortgage-related securities:
		Government-sponsored enterprise (GSE)		3,741,040			―			3,741,040			―
		Private-label		2,482			―			2,482			―
	GNMA commercial mortgage-related securities			980,602			―			980,602			―
	Other securities (debt and equity)			5,866			2,666			3,000			200
		Total investment securities available for sale	$	5,345,422		$	3,662		$	5,341,560		$	200
	Derivatives (trading and other assets)		$	42,388		$	―		$	40,948		$	1,440
	Liabilities:
	Derivatives (trading and other liabilities)		$	43,569		$	―		$	42,946		$	623
							Fair Value Measurements Using
			31-Dec-13				Level 1			Level 2			Level 3
				($ in Thousands)
	Assets:
	Investment securities available for sale:
	U.S. Treasury securities		$	1,002		$	1,002		$	―		$	―
	Obligations of state and political subdivisions (municipal securities)			676,080			―			676,080			―
	Residential mortgage-related securities:
		Government-sponsored enterprise (GSE)		3,838,430			―			3,838,430			―
		Private-label		3,014			―			3,014			―
	GNMA commercial mortgage-related securities			647,477			―			647,477			―
	Asset-backed securities			23,059			―			23,059			―
	Other securities (debt and equity)			61,523			3,238			57,986			299
		Total investment securities available for sale	$	5,250,585		$	4,240		$	5,246,046		$	299
	Derivatives (trading and other assets)		$	52,773		$	―		$	51,056		$	1,717
	Liabilities:
	Derivatives (trading and other liabilities)		$	53,798		$	―		$	53,798		$	―
	The table below presents a rollforward of the balance sheet amounts for the year ended December 31, 2013 and the nine months ended September 30, 2014, for financial instruments measured on a recurring basis and classified within Level 3 of the fair value hierarchy.
	Assets and Liabilities Measured at Fair Value
	Using Significant Unobservable Inputs (Level 3)
				Investment Securities Available for Sale			Derivative Financial Instruments
	($ in Thousands)
	Balance December 31, 2012			$	480		$	7,647
		Total net losses included in income:
			Mortgage derivative loss		―			-5,930
		Total net losses included in other comprehensive income:
			Unrealized investment securities loss		-70			―
	Sales of investment securities			-111			―
Balance December 31, 2013			$	299		$	1,717
	Total net losses included in income:
		Mortgage derivative loss		―			-900
	Sales of investment securities			-99			―
Balance September 30, 2014			$	200		$	817
For Level 3 assets and liabilities measured at fair value on a recurring or nonrecurring basis as of September 30, 2014, the Corporation utilized the following valuation techniques and significant unobservable inputs.
Derivative financial instruments (mortgage derivative – interest rate lock commitments to originate residential mortgage loans held for sale): The significant unobservable input used in the fair value measurement of the Corporation's mortgage derivative interest rate lock commitments (“IRLC”) is the closing ratio, which represents the percentage of loans currently in a lock position which management estimates will ultimately close.  The closing ratio calculation takes into consideration historical data and loan-level data, (particularly the change in the current interest rates from the time of initial rate lock).  The closing ratio is periodically reviewed for reasonableness and reported to the Mortgage Risk Management Committee. At September 30, 2014, the closing ratio was 88%.
Impaired loans: For individually evaluated impaired loans, the amount of impairment is based upon the present value of expected future cash flows discounted at the loan's effective interest rate, the estimated fair value of the underlying collateral for collateral-dependent loans, or the estimated liquidity of the note, resulting in average discounts of 20% to 30%.
Mortgage servicing rights: The discounted cash flow analyses that generate expected market prices utilize the observable characteristics of the mortgage servicing rights portfolio, as well as certain unobservable valuation parameters.  The significant unobservable inputs used in the fair value measurement of the Corporation's mortgage servicing rights are the weighted average constant prepayment rate and weighted average discount rate, which were 13.4% and 10.1% at September 30, 2014, respectively.  Significant increases (decreases) in any of those inputs in isolation could result in a significantly lower (higher) fair value measurement.
These parameter assumptions fall within a range that the Corporation, in consultation with an independent third party, believes purchasers of servicing would apply to such portfolios sold into the current secondary servicing market. Discussions are held with members from Treasury and Consumer Banking to reconcile the fair value estimates and the key assumptions used by the respective parties in arriving at those estimates.  The Associated Mortgage Group Risk Committee is responsible for providing control over the valuation methodology and key assumptions.  To assess the reasonableness of the fair value measurement, the Corporation also compares the fair value and constant prepayment rate to a value calculated by an independent third party on an annual basis.
The table below presents the Corporation's loans held for sale, impaired loans, and mortgage servicing rights measured at fair value on a nonrecurring basis as of September 30, 2014 and December 31, 2013, aggregated by the level in the fair value hierarchy within which those measurements fall.
Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis
					Fair Value Measurements Using
	30-Sep-14				Level 1			Level 2			Level 3
		($ in Thousands)
Assets:
Loans held for sale	$	142,097		$	―		$	142,097		$	―
Impaired loans (1)		83,771			―			―			83,771
Mortgage servicing rights		69,940			―			―			69,940
					Fair Value Measurements Using
	31-Dec-13				Level 1			Level 2			Level 3
		($ in Thousands)
Assets:
Loans held for sale	$	64,738		$	―		$	64,738		$	―
Impaired loans (1)		88,049			―			―			88,049
Mortgage servicing rights		74,444			―			―			74,444
(1)       Represents individually evaluated impaired loans, net of the related allowance for loan losses.
Certain nonfinancial assets measured at fair value on a nonrecurring basis include other real estate owned (upon initial recognition or subsequent impairment), nonfinancial assets and nonfinancial liabilities measured at fair value in the second step of a goodwill impairment test, and intangible assets and other nonfinancial long-lived assets measured at fair value for impairment assessment.
During the first nine months of 2014 and the full year 2013, certain other real estate owned, upon initial recognition, was re-measured and reported at fair value through a charge off to the allowance for loan losses based upon the estimated fair value of the other real estate owned, less estimated selling costs. The fair value of other real estate owned, upon initial recognition or subsequent impairment, was estimated using appraised values, which the Corporation classifies as a Level 2 nonrecurring fair value measurement. Other real estate owned measured at fair value upon initial recognition totaled approximately $19 million for the first nine months of 2014 and $29 million for the year ended December 31, 2013. In addition to other real estate owned measured at fair value upon initial recognition, the Corporation also recorded write-downs to the balance of other real estate owned for subsequent impairment of $2 million and $4 million to asset losses, net for the nine months ended September 30, 2014 and the year ended December 31, 2013, respectively.
Fair Value of Financial Instruments:
The Corporation is required to disclose estimated fair values for its financial instruments. Fair value estimates, methods, and assumptions are set forth below for the Corporation's financial instruments.
The estimated fair values of the Corporation's financial instruments at September 30, 2014 and December 31, 2013, were as follows.
		30-Sep-14
		Carrying				Fair Value Measurements Using
		Amount		Fair Value		Level 1		Level 2		Level 3
		($ in Thousands)
Financial assets:
Cash and due from banks	$	381,287	$	381,287	$	381,287	$	―	$	―
Interest-bearing deposits in other financial institutions		74,945		74,945		74,945		―		―
Federal funds sold and securities purchased under
agreements to resell		18,320		18,320		18,320		―		―
Investment securities held to maturity		301,941		307,882		―		307,882		―
Investment securities available for sale		5,345,422		5,345,422		3,662		5,341,560		200
FHLB and Federal Reserve Bank stocks		188,875		188,875		―		188,875		―
Loans held for sale		141,672		142,097		―		142,097		―
Loans, net		16,892,828		17,038,692		―		―		17,038,692
Bank owned life insurance		571,422		571,422		―		571,422		―
Accrued interest receivable		69,609		69,609		69,609		―		―
Interest rate-related instruments		31,862		31,862		―		31,862		―
Foreign currency exchange forwards		2,143		2,143		―		2,143		―
Interest rate lock commitments to originate residential
mortgage loans held for sale		1,440		1,440		―		―		1,440
Purchased options (time deposit)		6,943		6,943		―		6,943		―
Financial liabilities:
Noninterest-bearing demand, savings, interest-bearing
demand, and money market deposits	$	16,687,892	$	16,687,892	$	―	$	―	$	16,687,892
Brokered CDs and other time deposits		1,513,366		1,513,366		―		1,513,366		―
Short-term funding		1,430,180		1,430,180		―		1,430,180		―
Long-term funding		2,931,547		2,922,749		―		2,922,749		―
Accrued interest payable		1,543		1,543		1,543		―		―
Interest rate-related instruments		34,071		34,071		―		34,071		―
Foreign currency exchange forwards		1,932		1,932		―		1,932		―
Standby letters of credit (1)		3,526		3,526		―		3,526		―
Forward commitments to sell residential mortgage loans		623		623		―		―		623
Written options (time deposit)		6,943		6,943		―		6,943		―
		31-Dec-13
		Carrying				Fair Value Measurements Using
		Amount		Fair Value		Level 1		Level 2		Level 3
		($ in Thousands)
Financial assets:
Cash and due from banks	$	455,482	$	455,482	$	455,482	$	―	$	―
Interest-bearing deposits in other financial institutions		126,018		126,018		126,018		―		―
Federal funds sold and securities purchased under
agreements to resell		20,745		20,745		20,745		―		―
Investment securities held to maturity		175,210		169,889		―		169,889		―
Investment securities available for sale		5,250,585		5,250,585		4,240		5,246,046		299
FHLB and Federal Reserve Bank stocks		181,249		181,249		―		181,249		―
Loans held for sale		64,738		64,738		―		64,738		―
Loans, net		15,627,946		15,599,094		―		―		15,599,094
Bank owned life insurance		568,413		568,413		―		568,413		―
Accrued interest receivable		66,308		66,308		66,308		―		―
Interest rate-related instruments		42,980		42,980		―		42,980		―
Foreign currency exchange forwards		748		748		―		748		―
Interest rate lock commitments to originate residential
mortgage loans held for sale		416		416		―		―		416
Forward commitments to sell residential mortgage loans		1,301		1,301		―		―		1,301
Purchased options (time deposit)		7,328		7,328		―		7,328		―
Financial liabilities:
Noninterest-bearing demand, savings, interest-bearing
demand, and money market deposits	$	15,581,971	$	15,581,971	$	―	$	―	$	15,581,971
Brokered CDs and other time deposits		1,685,196		1,687,198		―		1,687,198		―
Short-term funding		740,926		740,926		―		740,926		―
Long-term funding		3,087,267		3,085,893		―		3,085,893		―
Accrued interest payable		7,994		7,994		7,994		―		―
Interest rate-related instruments		45,815		45,815		―		45,815		―
Foreign currency exchange forwards		655		655		―		655		―
Standby letters of credit (1)		3,754		3,754		―		3,754		―
Written options (time deposit)		7,328		7,328		―		7,328		―
(1)       The commitment on standby letters of credit was $352 million and $371 million at September 30, 2014 and December 31, 2013, respectively. See Note 12 for additional information on the standby letters of credit and for information on the fair value of lending-related commitments.
Cash and due from banks, interest-bearing deposits in other financial institutions, federal funds sold and securities purchased under agreements to resell, and accrued interest receivable - For these short-term instruments, the carrying amount is a reasonable estimate of fair value.
Investment securities (held to maturity and available for sale) - The fair value of investment securities is based on quoted prices in active markets, or if quoted prices are not available for a specific security, then fair values are estimated by using pricing models, quoted prices of securities with similar characteristics, or discounted cash flows.
FHLB and Federal Reserve Bank stocks – The carrying amount is a reasonable fair value estimate for the Federal Reserve Bank and Federal Home Loan Bank stocks given their “restricted” nature (i.e., the stock can only be sold back to the respective institutions (Federal Home Loan Bank or Federal Reserve Bank) or another member institution at par).
Loans held for sale –The fair value estimation process for the loans held for sale portfolio is segregated by loan type. The estimated fair value was based on what secondary markets are currently offering for portfolios with similar characteristics.
Loans, net - The fair value estimation process for the loan portfolio uses an exit price concept and reflects discounts the Corporation believes are consistent with liquidity discounts in the market place. Fair values are estimated for portfolios of loans with similar financial characteristics. Loans are segregated by type such as commercial and industrial, real estate construction, commercial real estate (owner occupied and investor), lease financing, residential mortgage, home equity, other installment, and credit cards. The fair value of loans is estimated by discounting the future cash flows using the current rates at which similar loans would be made to borrowers with similar credit ratings and for similar maturities. The fair value analysis also included other assumptions to estimate fair value, intended to approximate those a market participant would use in an orderly transaction, with adjustments for discount rates, interest rates, liquidity, and credit spreads, as appropriate.
Bank owned life insurance – The fair value of bank owned life insurance approximates the carrying amount, because upon liquidation of these investments, the Corporation would receive the cash surrender value which equals the carrying amount.
Deposits - The fair value of deposits with no stated maturity such as noninterest-bearing demand deposits, savings, interest-bearing demand deposits, and money market accounts, is equal to the amount payable on demand as of the balance sheet date. The fair value of Brokered CDs and other time deposits is based on the discounted value of contractual cash flows. The discount rate is estimated using the rates currently offered for deposits of similar remaining maturities. However, if the estimated fair value of Brokered CDs and other time deposits is less than the carrying value, the carrying value is reported as the fair value.
Accrued interest payable and short-term funding - For these short-term instruments, the carrying amount is a reasonable estimate of fair value.
Long-term funding - Rates currently available to the Corporation for debt with similar terms and remaining maturities are used to estimate the fair value of existing long-term funding.
Interest rate-related instruments - The fair value of interest rate-related instruments is determined using discounted cash flow analysis on the expected cash flows of each derivative. The Corporation also incorporates credit valuation adjustments to appropriately reflect both its own nonperformance risk and the respective counterparty's nonperformance risk in the fair value measurements.
Foreign currency exchange forwards – The fair value of the Corporation's foreign currency exchange forwards is determined using quoted prices of foreign currency exchange forwards with similar characteristics, with consideration given to the nature of the quote and the relationship of recently evidenced market activity to the fair value estimate.
Standby letters of credit - The fair value of standby letters of credit represent deferred fees arising from the related off-balance sheet financial instruments. These deferred fees approximate the fair value of these instruments and are based on several factors, including the remaining terms of the agreement and the credit standing of the customer.
Interest rate lock commitments to originate residential mortgage loans held for sale - The Corporation relies on an internal valuation model to estimate the fair value of its interest rate lock commitments to originate residential mortgage loans held for sale, which includes grouping the interest rate lock commitments by interest rate and terms, applying an estimated pull-through rate based on historical experience, and then multiplying by quoted investor prices determined to be reasonably applicable to the loan commitment groups based on interest rate, terms, and rate lock expiration dates of the loan commitment groups.
Forward commitments to sell residential mortgage loans - The Corporation relies on an internal valuation model to estimate the fair value of its forward commitments to sell residential mortgage loans (i.e., an estimate of what the Corporation would receive or pay to terminate the forward delivery contract based on market prices for similar financial instruments), which includes matching specific terms and maturities of the forward commitments against applicable investor pricing available.
Purchased and written options - The fair value of the Corporation's purchased and written options is determined using quoted prices of the underlying stocks.
Limitations - Fair value estimates are made at a specific point in time, based on relevant market information and information about the financial instrument. These estimates do not reflect any premium or discount that could result from offering for sale at one time the Corporation's entire holdings of a particular financial instrument. Because no market exists for a significant portion of the Corporation's financial instruments, fair value estimates are based on judgments regarding future expected loss experience, current economic conditions, risk characteristics of various financial instruments, and other factors. These estimates are subjective in nature and involve uncertainties and matters of significant judgment and, therefore, cannot be determined with precision. Changes in assumptions could significantly affect the estimates.

Retirement_Plans

Retirement Plans	9 Months Ended
	Sep. 30, 2014
Retirement Plans [Abstract]	'
Retirement Plans	'
	NOTE 14: Retirement Plans
	The Corporation has a noncontributory defined benefit retirement plan (the Retirement Account Plan (“RAP”)) covering substantially all full-time employees. The benefits are based primarily on years of service and the employee's compensation paid. Employees of acquired entities generally participate in the RAP after consummation of the business combinations. Any retirement plans of acquired entities are typically merged into the RAP after completion of the mergers, and credit is usually given to employees for years of service at the acquired institution for vesting and eligibility purposes. In connection with the First Federal acquisition in October 2004, the Corporation assumed the First Federal pension plan (the "First Federal Plan"). The First Federal Plan was frozen on December 31, 2004 and qualified participants in the First Federal Plan became eligible to participate in the RAP as of January 1, 2005. Additional discussion and information on the RAP and the First Federal Plan are collectively referred to below as the "Pension Plan".
	The Corporation also provides healthcare access for eligible retired employees in its Postretirement Plan (the “Postretirement Plan”). Retirees who are at least 55 years of age with 5 years of service are eligible to participate in the Postretirement Plan. The Corporation has no plan assets attributable to the Postretirement Plan. The Corporation reserves the right to terminate or make changes to the Postretirement Plan at any time.
	The components of net periodic benefit cost for the Pension and Postretirement Plans for the three and nine months ended September 30, 2014 and 2013, and for the full year 2013 were as follows.
			Three Months Ended				Nine Months Ended			Year Ended
			September 30,				September 30,			December 31,
			2014		2013		2014		2013	2013
	Components of Net Periodic Benefit Cost		($ in Thousands)
	Pension Plan:
	Service cost	$	2,975	$	2,975	$	8,925	$	8,925	$	12,078
	Interest cost		1,790		1,548		5,370		4,643		6,237
	Expected return on plan assets		-4,855		-4,305		-14,565		-12,915		-17,647
	Amortization of prior service cost		15		17		45		52		72
	Amortization of actuarial loss		326		1,073		975		3,218		4,344
	Total net periodic benefit cost	$	251	$	1,308	$	750	$	3,923	$	5,084
	Postretirement Plan:
	Interest cost	$	39	$	40	$	116	$	120	$	142
	Amortization of actuarial gain		-9		―		-26		―		―
	Total net periodic benefit cost	$	30	$	40	$	90	$	120	$	142
	The Corporation's funding policy is to pay at least the minimum amount required by the funding requirements of federal law and regulations, with consideration given to the maximum funding amounts allowed. The Corporation regularly reviews the funding of its Pension Plan. The Corporation made contributions of $21 million and $28 million to its Pension Plan in the first nine months of 2014 and 2013, respectively.

Segment_Reporting

Segment Reporting	9 Months Ended
	Sep. 30, 2014
Segment Reporting [Abstract]	'
Segment Reporting	'
	NOTE 15: Segment Reporting
	The Corporation utilizes a risk-based internal profitability measurement system to provide strategic business unit reporting. The profitability measurement system is based on internal management methodologies designed to produce consistent results and reflect the underlying economics of the units. Certain strategic business units have been combined for segment information reporting purposes where the nature of the products and services, the type of customer and the distribution of those products and services are similar. The three reportable segments are Corporate and Commercial Specialty; Community, Consumer, and Business; and Risk Management and Shared Services, with no segment representing more than half of the assets, liabilities or Tier 1 common equity of the Corporation as a whole.
	The financial information of the Corporation's segments has been compiled utilizing the accounting policies described in the Corporation's 2013 annual report on Form 10-K with certain exceptions. The more significant of these exceptions are described herein. The Corporation allocates interest income or interest expense using a funds transfer pricing methodology that charges users of funds (assets) interest expense and credits providers of funds (liabilities, primarily deposits) with income based on the maturity, prepayment and / or repricing characteristics of the assets and liabilities. The net effect of this allocation is recorded in the Risk Management and Shared Services segment. A credit provision is allocated to segments based on the expected long-term annual net charge off rates attributable to the credit risk of loans managed by the segment during the period. In contrast, the level of the consolidated provision for credit losses is determined using the methodologies described in the Corporation's 2013 annual report on Form 10-K to assess the overall appropriateness of the allowance for credit losses. The net effect of the credit provision is recorded in Risk Management and Shared Services. Indirect expenses incurred by certain centralized support areas are allocated to segments based on actual usage (for example, volume measurements) and other criteria. Certain types of administrative expense and bank-wide expense accruals (including amortization of core deposit and other intangible assets associated with acquisitions) are generally not allocated to segments. Income taxes are allocated to segments based on the Corporation's estimated effective tax rate, with certain segments adjusted for any tax-exempt income or non-deductible expenses. Equity is allocated to the segments based on regulatory capital requirements and in proportion to an assessment of the inherent risks associated with the business of the segment (including interest, credit and operating risk).
	The management accounting policies and processes utilized in compiling segment financial information are highly subjective and, unlike financial accounting, are not based on authoritative guidance similar to U.S. generally accepted accounting principles. As a result, reported segments and the financial information of the reported segments are not necessarily comparable with similar information reported by other financial institutions. Furthermore, changes in management structure or allocation methodologies and procedures may result in changes in previously reported segment financial data. During 2014, certain organization and methodology changes were made and, accordingly, 2013 results have been restated and presented on a comparable basis.
	A description of each business segment is presented below.
	Corporate and Commercial Specialty – The Corporate and Commercial Specialty segment serves a wide range of customers including, larger businesses, developers, non-profits, municipalities, and financial institutions. In serving this segment we compete based on an in-depth understanding of our customers' financial needs, the ability to match market competitive solutions to those needs, and the highest standards of relationship and service excellence in the delivery of these services. Delivery of services is provided through our corporate and commercial units, our commercial real estate unit, as well as our specialized industries and commercial financial services units. Within this segment, the following products and services are provided: (1) lending solutions, such as commercial loans and lines of credit, commercial real estate financing, construction loans, letters of credit, leasing, and asset based lending; for our larger clients we also provide loan syndications; (2) deposit and cash management solutions such as commercial checking and interest-bearing deposit products, cash vault and night depository services, liquidity solutions, payables and receivables solutions; and information services; and (3) specialized financial services such as swaps, capital markets, foreign exchange, and international banking solutions.
	Community, Consumer, and Business – The Community, Consumer, and Business segment serves individuals, as well as small and mid-sized businesses. In serving this segment we compete based on providing a broad range of solutions to meet the needs of our customers in their entire financial lifecycle, convenient access to our services through multiple channels such as branches, phone based services, online and mobile banking, and a relationship based business model which assists our customers in navigating any changes and challenges in their financial circumstances. Delivery of services is provided through our various Consumer Banking, Community Banking, and Private Client units. Within this segment, the following products and services are provided: (1) lending solutions such as residential mortgages, home equity loans and lines of credit, personal and installment loans, real estate financing, business loans, and business lines of credit; (2) deposit and transactional solutions such as checking, credit, debit and pre-paid cards, online banking and bill pay, and money transfer services; (3) investable funds solutions such as savings, money market deposit accounts, IRA accounts, certificates of deposit, fixed and variable annuities, full-service, discount and on-line investment brokerage; as well as trust and investment management accounts; and (4) insurance, benefits related products and services, and fiduciary services such as administration of pension, profit-sharing and other employee benefit plans, fiduciary and corporate agency services, and institutional asset management.
	Risk Management and Shared Services – The Risk Management and Shared Services segment includes Corporate Risk Management, Credit Administration, Finance, Treasury, Operations and Technology, which are key shared functions. The segment also includes Parent Company activity, intersegment eliminations and residual revenue and expenses, representing the difference between actual amounts incurred and the amounts allocated to operating segments, including interest rate risk residuals (funds transfer pricing mismatches) and credit risk and provision residuals (long term credit charge mismatches). The earning assets within this segment include the Corporation's investment portfolio and capital includes both allocated as well as any remaining unallocated capital.
	Information about the Corporation's segments is presented below.
	Segment Income Statement Data
		($ in Thousands)		Corporate and Commercial Specialty		Community, Consumer, and Business			Risk Management and Shared Services			Consolidated Total
	Nine Months Ended September 30, 2014
	Net interest income		$	209,212		$	236,687		$	60,407		$	506,306
	Noninterest income			33,711			170,547			16,418			220,676
		Total revenue		242,923			407,234			76,825			726,982
	Credit provision *			34,983			18,572			-42,555			11,000
	Noninterest expense			103,383			353,258			50,795			507,436
	Income before income taxes			104,557			35,404			68,585			208,546
	Income tax expense			35,568			12,391			18,816			66,775
	Net income		$	68,989		$	23,013		$	49,769		$	141,771
	Return on average allocated capital (ROT1CE) **			12.5	%		5.4	%		10.5	%		9.8	%
	Nine Months Ended September 30, 2013
	Net interest income		$	222,705		$	253,716		$	1,923		$	478,344
	Noninterest income			32,175			191,236			13,815			237,226
		Total revenue		254,880			444,952			15,738			715,570
	Credit provision *			38,161			18,029			-48,390			7,800
	Noninterest expense			93,806			364,609			43,067			501,482
	Income before income taxes			122,913			62,314			21,061			206,288
	Income tax expense			43,019			21,810			525			65,354
	Net income		$	79,894		$	40,504		$	20,536		$	140,934
	Return on average allocated capital (ROT1CE) **			14.7	%		9.4	%		3.9	%		9.8	%
	Segment Balance Sheet Data
		($ in Thousands)		Corporate and Commercial Specialty		Community, Consumer, and Business			Risk Management and Shared Services			Consolidated Total
	Average Balances for YTD 3Q 2014
	Average earning assets		$	8,606,965		$	7,973,138		$	5,933,220		$	22,513,323
	Average loans			8,595,980			7,973,138			85,115			16,654,233
	Average deposits			4,841,852			10,159,818			2,347,059			17,348,729
	Average allocated capital (T1CE) **		$	736,285		$	565,588		$	585,539		$	1,887,412
	Average Balances for YTD 3Q 2013
	Average earning assets		$	7,942,744		$	7,696,572		$	5,252,541		$	20,891,857
	Average loans			7,933,954			7,696,572			3,927			15,634,453
	Average deposits			4,964,426			10,050,400			2,273,966			17,288,792
	Average allocated capital (T1CE) **		$	724,974		$	575,382		$	575,654		$	1,876,010
	Segment Income Statement Data
		($ in Thousands)		Corporate and Commercial Specialty		Community, Consumer, and Business			Risk Management and Shared Services			Consolidated Total
	Three Months Ended September 30, 2014
	Net interest income		$	71,716		$	81,916		$	18,998		$	172,630
	Noninterest income			11,888			54,601			8,419			74,908
		Total revenue		83,604			136,517			27,417			247,538
	Credit provision *			11,074			6,773			-16,847			1,000
	Noninterest expense			35,044			122,722			14,087			171,853
	Income before income taxes			37,486			7,022			30,177			74,685
	Income tax expense			12,608			2,458			9,412			24,478
	Net income		$	24,878		$	4,564		$	20,765		$	50,207
	Return on average allocated capital (ROT1CE) **			13.3	%		3.1	%		14.2	%		10.4	%
	Three Months Ended September 30, 2013
	Net interest income		$	75,677		$	85,477		$	-645		$	160,509
	Noninterest income			11,142			55,366			4,408			70,916
		Total revenue		86,819			140,843			3,763			231,425
	Credit provision *			13,097			6,041			-19,938			-800
	Noninterest expense			32,094			122,450			10,627			165,171
	Income before income taxes			41,628			12,352			13,074			67,054
	Income tax expense			14,569			4,324			2,503			21,396
Net income		$	27,059		$	8,028		$	10,571		$	45,658
Return on average allocated capital (ROT1CE) **			14.8	%		5.6	%		6.2	%		9.3	%
Segment Balance Sheet Data
	($ in Thousands)		Corporate and Commercial Specialty		Community, Consumer, and Business			Risk Management and Shared Services			Consolidated Total
Average Balances for 3Q 2014
Average earning assets		$	8,761,870		$	8,310,839		$	6,024,008		$	23,096,717
Average loans			8,750,207			8,310,839			79,915			17,140,961
Average deposits			5,092,314			10,337,637			2,443,427			17,873,378
Average allocated capital (T1CE) **		$	744,605		$	583,148		$	543,493		$	1,871,246
Average Balances for 3Q 2013
Average earning assets		$	8,080,676		$	7,647,106		$	5,311,685		$	21,039,467
Average loans			8,074,076			7,647,106			3,183			15,724,365
Average deposits			5,124,746			10,066,487			2,418,586			17,609,819
Average allocated capital (T1CE) **		$	726,588		$	567,073		$	596,736		$	1,890,397
* The consolidated credit provision is equal to the actual reported provision for credit losses.
** The Federal Reserve establishes capital adequacy requirements for the Corporation, including Tier 1 capital. Tier 1 capital is comprised of common capital and certain redeemable, non-cumulative preferred stock. Average allocated capital represents average Tier 1 common equity which is defined as average Tier 1 capital excluding qualifying perpetrual preferred stock and qualifying trust preferred securities. This is a non-GAAP financial measure. For segment reporting purposes, the ROT1CE reflects return on average allocated Tier 1 common equity ("T1CE"). The ROT1CE for the Risk Management and Shared Services segment and the Consolidated Total is inclusive of the annualized effect of the preferred stock dividends.

Accumulated_Other_Comprehensiv

Accumulated Other Comprehensive Income (Loss)	9 Months Ended
	Sep. 30, 2014
Accumulated Other Comprehensive Income (Loss), Net Of Tax [Abstract]	'
Accumulated Other Comprehensive Income (Loss)	'
	Note 16: Accumulated Other Comprehensive Income (Loss)
	The following table summarizes the components of accumulated other comprehensive income (loss) at September 30, 2014 and 2013, changes during the nine and three month periods then ended, and reclassifications out of accumulated other comprehensive income during the nine and three month periods ended September 30, 2014 and 2013, respectively. The amounts reclassified from accumulated other comprehensive income for the investment securities available for sale are included in investment securities gains, net on the consolidated statements of income, while the amounts reclassified from accumulated other comprehensive income for the defined benefit pension and post retirement obligations are a component of personnel expense on the consolidated statements of income.
				Investments	Defined Benefit			Accumulated
				Securities		Pension and		Other
				Available	Post Retirement			Comprehensive
		($ in Thousands)		For Sale		Obligations		Income (Loss)
	Balance January 1, 2014		$	-11,396	$	-12,848	$	-24,244
	Other comprehensive income before reclassifications			36,061		-		36,061
	Amounts reclassified from accumulated other comprehensive income (loss)			-469		994		525
	Income tax expense			-13,684		-383		-14,067
	Net other comprehensive income during period			21,908		611		22,519
	Balance September 30, 2014		$	10,512	$	-12,237	$	-1,725
	Balance January 1, 2013		$	86,109	$	-37,506	$	48,603
	Other comprehensive loss before reclassifications			-142,318		-		-142,318
	Amounts reclassified from accumulated other comprehensive income (loss)			-582		3,270		2,688
	Income tax (expense) benefit			55,169		-1,262		53,907
	Net other comprehensive income (loss) during period			-87,731		2,008		-85,723
	Balance September 30, 2013		$	-1,622	$	-35,498	$	-37,120
				Investments	Defined Benefit			Accumulated
				Securities		Pension and		Other
				Available	Post Retirement			Comprehensive
				For Sale		Obligations		Income (Loss)
	Balance July 1, 2014		$	22,935	$	-12,441	$	10,494
	Other comprehensive loss before reclassifications			-20,123		-		-20,123
	Amounts reclassified from accumulated other comprehensive income (loss)			-57		332		275
	Income tax (expense) benefit			7,757		-128		7,629
	Net other comprehensive income (loss) during period			-12,423		204		-12,219
	Balance September 30, 2014		$	10,512	$	-12,237	$	-1,725
	Balance July 1, 2013		$	11,153	$	-36,168	$	-25,015
	Other comprehensive loss before reclassifications			-20,558		-		-20,558
	Amounts reclassified from accumulated other comprehensive income (loss)			-248		1,090		842
	Income tax (expense) benefit			8,031		-420		7,611
	Net other comprehensive income (loss) during period			-12,775		670		-12,105
	Balance September 30, 2013		$	-1,622	$	-35,498	$	-37,120

New_Accounting_Pronouncements_1

New Accounting Pronouncements Adopted (Policies)	9 Months Ended
	Sep. 30, 2014
New Accounting Pronouncements Adopted [Abstract]	'
Income Taxes	'
	In July 2013, the FASB issued an amendment to clarify the presentation of an unrecognized tax benefit when a net operating loss carryforward, a similar tax loss, or a tax credit carryforward exists. An unrecognized tax benefit, or a portion of an unrecognized tax benefit, should be presented in the financial statements as a reduction to a deferred tax asset for a net operating loss carryforward, a similar tax loss, or a tax credit carryforward, except as follows. To the extent a net operating loss carryforward, a similar tax loss, or a tax credit carryforward is not available at the reporting date under the tax law of the applicable jurisdiction to settle any additional income taxes that would result from the disallowance of a tax position or the tax law of the applicable jurisdiction does not require the entity to use, and the entity does not intend to use, the deferred tax asset for such purpose, the unrecognized tax benefit should be presented in the financial statements as a liability and should not be combined with deferred tax assets. This amendment is effective for fiscal years, and interim periods within those years, beginning after December 15, 2013 and should be applied prospectively. The Corporation adopted the accounting standard during the first quarter of 2014, as required, with no material impact on its results of operations, financial position, or liquidity.

Earnings_Per_Share_Tables

Earnings Per Share (Tables)	9 Months Ended
	Sep. 30, 2014
Earnings Per Share [Abstract]	'
Calculations for basic and diluted earnings per common share	'
			For the Three Months Ended				For the Nine Months Ended
			30-Sep				30-Sep
			2014		2013		2014		2013
			(In Thousands, except per share data)
	Net income	$	50,207	$	45,658	$	141,771	$	140,934
	Preferred stock dividends		-1,255		-1,285		-3,777		-3,885
	Net income available to common equity	$	48,952	$	44,373	$	137,994	$	137,049
	Common shareholder dividends		-13,983		-13,167		-42,864		-39,849
	Dividends on unvested share-based payment awards		-140		-100		-435		-374
	Undistributed earnings	$	34,829	$	31,106	$	94,695	$	96,826
	Undistributed earnings allocated to common shareholders		34,481		30,873		93,862		96,112
	Undistributed earnings allocated to unvested share-based payment awards		348		233		833		714
	Undistributed earnings	$	34,829	$	31,106	$	94,695	$	96,826
	Basic
	Distributed earnings to common shareholders	$	13,983	$	13,167	$	42,864	$	39,849
	Undistributed earnings allocated to common shareholders		34,481		30,873		93,862		96,112
	Total common shareholders earnings, basic	$	48,464	$	44,040	$	136,726	$	135,961
	Diluted
	Distributed earnings to common shareholders	$	13,983	$	13,167	$	42,864	$	39,849
	Undistributed earnings allocated to common shareholders		34,481		30,873		93,862		96,112
	Total common shareholders earnings, diluted	$	48,464	$	44,040	$	136,726	$	135,961
	Weighted average common shares outstanding		155,925		164,954		159,090		166,586
	Effect of dilutive common stock awards		1,066		489		903		174
	Diluted weighted average common shares outstanding		156,991		165,443		159,993		166,760
	Basic earnings per common share	$	0.31	$	0.27	$	0.86	$	0.82
	Diluted earnings per common share	$	0.31	$	0.27	$	0.85	$	0.82

StockBased_Compensation_Tables

Stock-Based Compensation (Tables)	9 Months Ended
	Sep. 30, 2014
Stock-Based Compensation [Abstract]	'
Fair value assumptions of stock options	'
			2014				2013
	Dividend yield		2	%			2	%
	Risk-free interest rate		2	%			0.99	%
	Weighted average expected volatility		20	%			34.35	%
	Weighted average expected life		6 years				6 years
	Weighted average per share fair value of options	$	3			$	3.8
Summary of Company's Stock Option Activities	'
							Weighted Average		Aggregate Intrinsic
					Weighted Average		Remaining		Value
	Stock Options		Shares		Exercise Price		Contractual Term		(000s)
	Outstanding at December 31, 2012		8,640,558		$	18.88
	Granted		1,020,979			14.02
	Exercised		-642,202			13.43
	Forfeited or expired		-985,092			21.49
	Outstanding at December 31, 2013		8,034,243		$	18.37		6.03	$	20,838
	Options exercisable at December 31, 2013		4,923,720		$	21.48		4.62		8,580
	Outstanding at December 31, 2013		8,034,243		$	18.37
	Granted		1,389,452			17.45
	Exercised		-754,470			13.74
	Forfeited or expired		-589,238			24.36
	Outstanding at September 30, 2014		8,079,987		$	18.21		6.12	$	17,762
	Options exercisable at September 30, 2014		5,225,930		$	19.78		4.79		11,624
Summary of Company's Nonvested Stock Option Activities	'
					Weighted Average
	Stock Options		Shares		Grant Date Fair Value
	Nonvested at December 31, 2012		4,036,595		$	5.11
	Granted		1,020,979			3.8
	Vested		-1,680,981			5.1
	Forfeited		-266,070			5.05
	Nonvested at December 31, 2013		3,110,523		$	4.69
	Granted		1,389,452			3
	Vested		-1,492,733			4.95
	Forfeited		-153,185			4.41
	Nonvested at September 30, 2014		2,854,057		$	3.75
Summary of Restricted Stock Awards Activity (Excluding Salary Shares)	'
					Weighted Average
	Restricted Stock		Shares		Grant Date Fair Value
	Outstanding at December 31, 2012		932,425		$	13.6
	Granted		1,276,868			14.03
	Vested		-626,480			13.68
	Forfeited		-71,048			13.92
	Outstanding at December 31, 2013		1,511,765		$	13.92
	Granted		1,158,711			17.41
	Vested		-526,784			14.13
	Forfeited		-124,222			15.06
	Outstanding at September 30, 2014		2,019,470		$	15.8

Investment_Securities_Tables

Investment Securities (Tables)	9 Months Ended
	Sep. 30, 2014
Investment Securities [Abstract]	'
Investment securities available for sale	'
								Gross			Gross
					Amortized			unrealized			unrealized
	September 30, 2014:				cost			gains			losses				Fair value
						($ in Thousands)
	Investment securities available for sale:
		U.S. Treasury securities			$	999		$	―		$	-3		$	996
		Obligations of state and political subdivisions
			(municipal securities)			588,255			26,229			-48			614,436
		Residential mortgage-related securities:
			Government-sponsored enterprise ("GSE")			3,725,218			59,047			-43,225			3,741,040
			Private-label			2,475			9			-2			2,482
		GNMA commercial mortgage-related securities				1,007,068			1,751			-28,217			980,602
		Other securities (debt and equity)				5,806			60			―			5,866
				Total investment securities available for sale	$	5,329,821		$	87,096		$	-71,495		$	5,345,422
								Gross			Gross
					Amortized			unrealized			unrealized
	December 31, 2013:				cost			gains			losses				Fair value
						($ in Thousands)
	Investment securities available for sale:
		U.S. Treasury securities			$	1,001		$	1		$	-		$	1,002
		Obligations of state and political subdivisions
			(municipal securities)			653,758			23,855			-1,533			676,080
		Residential mortgage-related securities:
			GSE			3,855,467			61,542			-78,579			3,838,430
			Private-label			3,035			16			-37			3,014
		GNMA commercial mortgage-related securities				673,555			1,764			-27,842			647,477
		Asset-backed securities (1)				23,049			10			-			23,059
		Other securities (debt and equity)				60,711			855			-43			61,523
				Total investment securities available for sale	$	5,270,576		$	88,043		$	-108,034		$	5,250,585
HeldToMaturitySecuritiesTextBlock	'
	Investment securities held to maturity:
		Obligations of state and political subdivisions
			(municipal securities)		$	301,941		$	6,875		$	-934		$	307,882
				Total investment securities held to maturity	$	301,941		$	6,875		$	-934		$	307,882
	Investment securities held to maturity:
		Obligations of state and political subdivisions
			(municipal securities)		$	175,210		$	401		$	-5,722		$	169,889
				Total investment securities held to maturity	$	175,210		$	401		$	-5,722		$	169,889
	(1) The asset-backed securities position is largely comprised of senior, floating rate, tranches of student loan securities issued by SLM Corp and guaranteed under the Federal Family Education Loan Program.
Amortized cost and fair values of investment securities available for sale by contractual maturity	'
			Available for Sale						Held to Maturity
	($ in Thousands)		Amortized Cost				Fair Value		Amortized Cost				Fair Value
	Due in one year or less		$	28,053		$	28,232		$	-		$	-
	Due after one year through five years			224,059			236,326			765			774
	Due after five years through ten years			333,788			347,187			105,931			106,998
	Due after ten years			9,142			9,480			195,245			200,110
		Total debt securities		595,042			621,225			301,941			307,882
	Residential mortgage-related securities:
		GSE		3,725,218			3,741,040			-			-
		Private-label		2,475			2,482			-			-
	GNMA commercial mortgage-related securities			1,007,068			980,602			-			-
	Equity securities			18			73			-			-
		Total investment securities	$	5,329,821		$	5,345,422		$	301,941		$	307,882
	Ratio of Fair Value to Amortized Cost						100.3	%					102	%
Unrealized losses and fair value of available for sale and held to maturity securities, by investment category and time length	'
				Less than 12 months								12 months or more							Total
				Number of		Unrealized				Fair		Number of		Unrealized			Fair	Unrealized			Fair
	September 30, 2014:			Securities			Losses			Value		Securities			Losses		Value		Losses		Value
							($ in Thousands)
	Investment securities available for sale:
		U.S. Treasury securities		1		$	-3		$	996		0		$	―	$	―	$	-3	$	996
		Obligations of state and political
			subdivisions (municipal securities)	5			-1		$	1,799		13			-47	$	5,647		-48	$	7,446
		Residential mortgage-related securities:
			GSE	30			-1,472			331,085		64			-41,753		1,389,945		-43,225		1,721,030
			Private-label	1			-1			1,889		2			-1		30		-2		1,919
		GNMA commercial mortgage-related securities		12			-1,927			363,315		15			-26,290		390,443		-28,217		753,758
			Total			$	-3,404		$	699,084				$	-68,091	$	1,786,065	$	-71,495	$	2,485,149
	Investment securities held to maturity:
		Obligations of state and political
			subdivisions (municipal securities)	39		$	-55		$	14,443		119		$	-879	$	55,522	$	-934	$	69,965
			Total			$	-55		$	14,443				$	-879	$	55,522	$	-934	$	69,965
							Less than 12 months								12 months or more				Total
				Number								Number
				of		Unrealized						of		Unrealized				Unrealized
	December 31, 2013:			Securities		Losses			Fair Value			Securities		Losses		Fair Value		Losses		Fair Value
							($ in Thousands)
	Investment securities available for sale:
		Obligations of state and political
			subdivisions (municipal securities)	113		$	-1,525		$	47,044		1		$	-8	$	273	$	-1,533	$	47,317
		Residential mortgage-related securities:
			GSE	106			-57,393			1,887,784		15			-21,186		421,082		-78,579		2,308,866
			Private-label	2			-37			2,105		1			-		35		-37		2,140
		GNMA commercial mortgage-related securities		19			-23,854			443,462		1			-3,988		45,950		-27,842		489,412
		Other debt securities		5			-43			6,452		0			-		-		-43		6,452
			Total			$	-82,852		$	2,386,847				$	-25,182	$	467,340	$	-108,034	$	2,854,187
	Investment securities held to maturity:
		Obligations of state and political
			subdivisions (municipal securities)	298		$	-5,339		$	124,435		10		$	-383	$	5,010	$	-5,722	$	129,445
			Total			$	-5,339		$	124,435				$	-383	$	5,010	$	-5,722	$	129,445
Credit loss portion of other than temporary impairment	'
			Private-label
			Mortgage-Related			Trust Preferred
			Securities			Debt Securities				Total
			($ in Thousands)
	Balance of credit-related other-than-temporary
		impairment at December 31, 2012	$	-532		$	-6,336		$	-6,868
	Reduction due to credit impaired securities sold			532			57			589
	Balance of credit-related other-than-temporary									.
		impairment at December 31, 2013	$	―		$	-6,279		$	-6,279
	Reduction due to credit impaired securities sold or abandoned			―			6,279			6,279
	Balance of credit-related other-than-temporary									.
		impairment at September 30, 2014	$	―		$	―		$	―

Loans_Allowance_for_Loan_Losse1

Loans, Allowance for Loan Losses, and Credit Quality (Tables)	9 Months Ended
	Sep. 30, 2014
Financing Receivable, Impaired [Line Items]	'
Loan composition	'
	The period end loan composition was as follows.
						September 30,			December 31,
						2014			2013
						($ in Thousands)
	Commercial and industrial				$	5,603,899		$	4,822,680
	Commercial real estate - owner occupied					1,014,335			1,114,715
	Lease financing					52,600			55,483
		Commercial and business lending				6,670,834			5,992,878
	Commercial real estate - investor					3,043,361			2,939,456
	Real estate construction					982,426			896,248
		Commercial real estate lending				4,025,787			3,835,704
			Total commercial			10,696,621			9,828,582
	Home equity					1,676,525			1,825,014
	Installment and credit cards					459,682			407,074
	Residential mortgage					4,326,262			3,835,591
			Total consumer			6,462,469			6,067,679
				Total loans	$	17,159,090		$	15,896,261
Changes in the allowance for loan losses	'
	A summary of the changes in the allowance for credit losses was as follows.
			Nine Months Ended			Year Ended
			30-Sep-14			31-Dec-13
				($ in Thousands)
	Allowance for Loan Losses:
	Balance at beginning of period		$	268,315		$	297,409
	Provision for loan losses			8,500			10,000
	Charge offs			-35,318			-88,061
	Recoveries			24,765			48,967
		Net charge offs		-10,553			-39,094
	Balance at end of period		$	266,262		$	268,315
	Allowance for Unfunded Commitments:
	Balance at beginning of period		$	21,900		$	21,800
	Provision for unfunded commitments			2,500			100
	Balance at end of period		$	24,400		$	21,900
	Allowance for Credit Losses		$	290,662		$	290,215
Changes in the allowance for loan losses by portfolio segment	'
	$ in Thousands	Commercial and industrial		Commercial real estate - owner occupied		Lease financing		Commercial real estate - investor		Real estate construction			Home equity	Installment and credit cards		Residential mortgage			Total
	Balance at Dec 31, 2013	$	104,501	$	19,476	$	1,607	$	58,156	$	23,418	$	32,196	$	2,416	$	26,545	$	268,315
	Provision for loan losses		18,700		1,098		777		-14,292		-3,831		1,278		3,486		1,284		8,500
	Charge offs		-11,421		-2,963		-29		-4,358		-1,761		-9,713		-1,751		-3,322		-35,318
	Recoveries		9,501		1,427		6		9,693		503		2,546		481		608		24,765
	Balance at Sep 30, 2014	$	121,281	$	19,038	$	2,361	$	49,199	$	18,329	$	26,307	$	4,632	$	25,115	$	266,262
	Allowance for loan losses:
	Ending balance impaired loans individually evaluated for impairment	$	14,006	$	1,672	$	735	$	1,829	$	1,140	$	11	$	-	$	588	$	19,981
	Ending balance impaired loans collectively evaluated for impairment	$	3,590	$	2,404	$	4	$	2,429	$	1,021	$	12,480	$	339	$	11,503	$	33,770
	Total impaired loans	$	17,596	$	4,076	$	739	$	4,258	$	2,161	$	12,491	$	339	$	12,091	$	53,751
	Ending balance all other loans collectively evaluated for impairment	$	103,685	$	14,962	$	1,622	$	44,941	$	16,168	$	13,816	$	4,293	$	13,024	$	212,511
	Total	$	121,281	$	19,038	$	2,361	$	49,199	$	18,329	$	26,307	$	4,632	$	25,115	$	266,262
	Loans:
	Ending balance impaired loans individually evaluated for impairment	$	45,242	$	17,927	$	1,938	$	21,204	$	6,026	$	1,025	$	-	$	10,390	$	103,752
	Ending balance impaired loans collectively evaluated for impairment	$	42,856	$	17,987	$	9	$	28,342	$	2,966	$	30,818	$	1,759	$	60,252	$	184,989
	Total impaired loans	$	88,098	$	35,914	$	1,947	$	49,546	$	8,992	$	31,843	$	1,759	$	70,642	$	288,741
	Ending balance all other loans collectively evaluated for impairment	$	5,515,801	$	978,421	$	50,653	$	2,993,815	$	973,434	$	1,644,682	$	457,923	$	4,255,620	$	16,870,349
	Total	$	5,603,899	$	1,014,335	$	52,600	$	3,043,361	$	982,426	$	1,676,525	$	459,682	$	4,326,262	$	17,159,090
	$ in Thousands	Commercial and industrial		Commercial real estate - owner occupied			Lease financing	Commercial real estate - investor		Real estate construction		Home equity		Installment		Residential mortgage			Total
	Balance at Dec 31, 2012	$	97,852	$	27,389	$	3,024	$	63,181	$	20,741	$	56,826	$	4,299	$	24,097	$	297,409
	Provision for loan losses		12,930		-1,778		-1,429		-2,140		541		-8,213		-2,127		12,216		10,000
	Charge offs		-35,146		-6,474		-206		-9,846		-3,375		-20,629		-1,389		-10,996		-88,061
	Recoveries		28,865		339		218		6,961		5,511		4,212		1,633		1,228		48,967
	Balance at Dec 31, 2013	$	104,501	$	19,476	$	1,607	$	58,156	$	23,418	$	32,196	$	2,416	$	26,545	$	268,315
	Allowance for loan losses:
	Ending balance impaired loans individually evaluated for impairment	$	7,994	$	1,019	$	-	$	3,932	$	254	$	123	$	-	$	315	$	13,637
	Ending balance impaired loans collectively evaluated for impairment	$	3,923	$	1,936	$	29	$	3,963	$	2,162	$	13,866	$	487	$	11,872	$	38,238
	Total impaired loans	$	11,917	$	2,955	$	29	$	7,895	$	2,416	$	13,989	$	487	$	12,187	$	51,875
	Ending balance all other loans collectively evaluated for impairment	$	92,584	$	16,521	$	1,578	$	50,261	$	21,002	$	18,207	$	1,929	$	14,358	$	216,440
	Total	$	104,501	$	19,476	$	1,607	$	58,156	$	23,418	$	32,196	$	2,416	$	26,545	$	268,315
	Loans:
	Ending balance impaired loans individually evaluated for impairment	$	29,343	$	24,744	$	-	$	32,367	$	3,777	$	929	$	-	$	10,526	$	101,686
	Ending balance impaired loans collectively evaluated for impairment	$	40,893	$	17,929	$	69	$	50,175	$	6,483	$	33,871	$	1,360	$	56,947	$	207,727
	Total impaired loans	$	70,236	$	42,673	$	69	$	82,542	$	10,260	$	34,800	$	1,360	$	67,473	$	309,413
	Ending balance all other loans collectively evaluated for impairment	$	4,752,444	$	1,072,042	$	55,414	$	2,856,914	$	885,988	$	1,790,214	$	405,714	$	3,768,118	$	15,586,848
	Total	$	4,822,680	$	1,114,715	$	55,483	$	2,939,456	$	896,248	$	1,825,014	$	407,074	$	3,835,591	$	15,896,261
Summarized details of Loans	'
	The following table presents loans by past due status at September 30, 2014.
			30-59 Days Past Due		60-89 Days Past Due	90 Days or More Past Due *			Total Past Due		Current		Total
		($ in Thousands)
	Accruing loans
	Commercial and industrial	$	2,035	$	1,912	$	269	$	4,216	$	5,548,540	$	5,552,756
	Commercial real estate - owner occupied		1,024		1,651		-		2,675		987,320		989,995
	Lease financing		-		-		-		-		50,653		50,653
	Commercial and business lending		3,059		3,563		269		6,891		6,586,513		6,593,404
	Commercial real estate - investor		15,869		-		-		15,869		3,002,386		3,018,255
	Real estate construction		299		100		-		399		973,840		974,239
	Commercial real estate lending		16,168		100		-		16,268		3,976,226		3,992,494
	Total commercial		19,227		3,663		269		23,159		10,562,739		10,585,898
	Home equity		7,999		2,739		-		10,738		1,644,526		1,655,264
	Installment and credit cards		1,106		712		1,369		3,187		455,842		459,029
	Residential mortgage		2,944		287		52		3,283		4,271,478		4,274,761
	Total consumer		12,049		3,738		1,421		17,208		6,371,846		6,389,054
	Total accruing loans	$	31,276	$	7,401	$	1,690	$	40,367	$	16,934,585	$	16,974,952
	Nonaccrual loans
	Commercial and industrial	$	2,061	$	1,254	$	7,633	$	10,948	$	40,195	$	51,143
	Commercial real estate - owner occupied		429		582		10,159		11,170		13,170		24,340
	Lease financing		-		-		550		550		1,397		1,947
	Commercial and business lending		2,490		1,836		18,342		22,668		54,762		77,430
	Commercial real estate - investor		140		685		8,418		9,243		15,863		25,106
	Real estate construction		64		56		1,061		1,181		7,006		8,187
	Commercial real estate lending		204		741		9,479		10,424		22,869		33,293
	Total commercial		2,694		2,577		27,821		33,092		77,631		110,723
	Home equity		1,606		2,067		10,607		14,280		6,981		21,261
	Installment and credit cards		57		49		138		244		409		653
	Residential mortgage		3,934		2,657		22,117		28,708		22,793		51,501
	Total consumer		5,597		4,773		32,862		43,232		30,183		73,415
	Total nonaccrual loans **	$	8,291	$	7,350	$	60,683	$	76,324	$	107,814	$	184,138
	Total loans
	Commercial and industrial	$	4,096	$	3,166	$	7,902	$	15,164	$	5,588,735	$	5,603,899
	Commercial real estate - owner occupied		1,453		2,233		10,159		13,845		1,000,490		1,014,335
	Lease financing		-		-		550		550		52,050		52,600
	Commercial and business lending		5,549		5,399		18,611		29,559		6,641,275		6,670,834
	Commercial real estate - investor		16,009		685		8,418		25,112		3,018,249		3,043,361
	Real estate construction		363		156		1,061		1,580		980,846		982,426
	Commercial real estate lending		16,372		841		9,479		26,692		3,999,095		4,025,787
	Total commercial		21,921		6,240		28,090		56,251		10,640,370		10,696,621
	Home equity		9,605		4,806		10,607		25,018		1,651,507		1,676,525
	Installment and credit cards		1,163		761		1,507		3,431		456,251		459,682
	Residential mortgage		6,878		2,944		22,169		31,991		4,294,271		4,326,262
	Total consumer		17,646		8,511		34,283		60,440		6,402,029		6,462,469
	Total loans	$	39,567	$	14,751	$	62,373	$	116,691	$	17,042,399	$	17,159,090
	* The recorded investment in loans past due 90 days or more and still accruing totaled $2 million at September 30, 2014 (the same as the reported balances for the accruing loans noted above). ** The percent of nonaccrual loans which are current was 59% at September 30, 2014.
	The following table presents loans by past due status at December 31, 2013.
			30-59 Days Past Due		60-89 Days Past Due	90 Days or More Past Due *			Total Past Due		Current		Total
		($ in Thousands)
	Accruing loans
	Commercial and industrial	$	3,390	$	3,436	$	1,199	$	8,025	$	4,776,936	$	4,784,961
	Commercial real estate - owner occupied		1,015		2,091		-		3,106		1,081,945		1,085,051
	Lease financing		-		-		-		-		55,414		55,414
	Commercial and business lending		4,405		5,527		1,199		11,131		5,914,295		5,925,426
	Commercial real estate - investor		9,081		14,134		-		23,215		2,878,645		2,901,860
	Real estate construction		836		1,118		-		1,954		887,827		889,781
	Commercial real estate lending		9,917		15,252		-		25,169		3,766,472		3,791,641
	Total commercial		14,322		20,779		1,199		36,300		9,680,767		9,717,067
	Home equity		8,611		2,069		346		11,026		1,788,821		1,799,847
	Installment		885		265		637		1,787		404,173		405,960
	Residential mortgage		5,253		865		168		6,286		3,781,673		3,787,959
	Total consumer		14,749		3,199		1,151		19,099		5,974,667		5,993,766
	Total accruing loans	$	29,071	$	23,978	$	2,350	$	55,399	$	15,655,434	$	15,710,833
Nonaccrual loans
Commercial and industrial	$	998	$	1,764	$	9,765	$	12,527	$	25,192	$	37,719
Commercial real estate - owner occupied		2,482		1,724		11,125		15,331		14,333		29,664
Lease financing		-		-		69		69		-		69
Commercial and business lending		3,480		3,488		20,959		27,927		39,525		67,452
Commercial real estate - investor		3,408		899		20,466		24,773		12,823		37,596
Real estate construction		2,376		-		2,267		4,643		1,824		6,467
Commercial real estate lending		5,784		899		22,733		29,416		14,647		44,063
Total commercial		9,264		4,387		43,692		57,343		54,172		111,515
Home equity		1,725		1,635		14,331		17,691		7,476		25,167
Installment		129		24		289		442		672		1,114
Residential mortgage		3,199		3,257		26,201		32,657		14,975		47,632
Total consumer		5,053		4,916		40,821		50,790		23,123		73,913
Total nonaccrual loans**	$	14,317	$	9,303	$	84,513	$	108,133	$	77,295	$	185,428
Total loans
Commercial and industrial	$	4,388	$	5,200	$	10,964	$	20,552	$	4,802,128	$	4,822,680
Commercial real estate - owner occupied		3,497		3,815		11,125		18,437		1,096,278		1,114,715
Lease financing		-		-		69		69		55,414		55,483
Commercial and business lending		7,885		9,015		22,158		39,058		5,953,820		5,992,878
Commercial real estate - investor		12,489		15,033		20,466		47,988		2,891,468		2,939,456
Real estate construction		3,212		1,118		2,267		6,597		889,651		896,248
Commercial real estate lending		15,701		16,151		22,733		54,585		3,781,119		3,835,704
Total commercial		23,586		25,166		44,891		93,643		9,734,939		9,828,582
Home equity		10,336		3,704		14,677		28,717		1,796,297		1,825,014
Installment		1,014		289		926		2,229		404,845		407,074
Residential mortgage		8,452		4,122		26,369		38,943		3,796,648		3,835,591
Total consumer		19,802		8,115		41,972		69,889		5,997,790		6,067,679
Total loans	$	43,388	$	33,281	$	86,863	$	163,532	$	15,732,729	$	15,896,261
* The recorded investment in loans past due 90 days or more and still accruing totaled $2 million at December 31, 2013 (the same as the reported balances for the accruing loans noted above). ** The percent of nonaccrual loans which are current was 42% at December 31, 2013.
Summarized details of impaired Loans	'
	The following table presents impaired loans at September 30, 2014.
			Recorded Investment		Unpaid Principal Balance		Related Allowance		YTD Average Recorded Investment		YTD Interest Income Recognized(a)
	Loans with a related allowance		($ in Thousands)
	Commercial and industrial	$	74,410	$	76,852	$	17,596	$	74,470	$	2,548
	Commercial real estate - owner occupied		23,250		25,849		4,076		24,412		585
	Lease financing		1,946		1,946		739		2,074		-
	Commercial and business lending		99,606		104,647		22,411		100,956		3,133
	Commercial real estate - investor		38,566		42,836		4,258		40,288		988
	Real estate construction		5,778		8,576		2,161		6,702		158
	Commercial real estate lending		44,344		51,412		6,419		46,990		1,146
	Total commercial		143,950		156,059		28,830		147,946		4,279
	Home equity		30,996		34,392		12,491		31,842		1,105
	Installment and credit cards		1,759		1,979		339		1,864		41
	Residential mortgage		62,916		67,457		12,091		63,920		1,526
	Total consumer		95,671		103,828		24,921		97,626		2,672
	Total loans	$	239,621	$	259,887	$	53,751	$	245,572	$	6,951
	Loans with no related allowance
	Commercial and industrial	$	13,688	$	21,230	$	-	$	16,781	$	46
	Commercial real estate - owner occupied		12,664		14,996		-		13,775		36
	Lease financing		1		-		-		-		-
	Commercial and business lending		26,353		36,226		-		30,556		82
	Commercial real estate - investor		10,980		17,169		-		12,556		133
	Real estate construction		3,214		3,904		-		3,313		-
	Commercial real estate lending		14,194		21,073		-		15,869		133
	Total commercial		40,547		57,299		-		46,425		215
	Home equity		847		859		-		864		15
	Installment and credit cards		-		-		-		-		-
	Residential mortgage		7,726		7,845		-		7,774		104
	Total consumer		8,573		8,704		-		8,638		119
	Total loans	$	49,120	$	66,003	$	-	$	55,063	$	334
	Total
	Commercial and industrial	$	88,098	$	98,082	$	17,596	$	91,251	$	2,594
	Commercial real estate - owner occupied		35,914		40,845		4,076		38,187		621
	Lease financing		1,947		1,946		739		2,074		-
	Commercial and business lending		125,959		140,873		22,411		131,512		3,215
	Commercial real estate - investor		49,546		60,005		4,258		52,844		1,121
	Real estate construction		8,992		12,480		2,161		10,015		158
	Commercial real estate lending		58,538		72,485		6,419		62,859		1,279
	Total commercial		184,497		213,358		28,830		194,371		4,494
	Home equity		31,843		35,251		12,491		32,706		1,120
	Installment and credit cards		1,759		1,979		339		1,864		41
	Residential mortgage		70,642		75,302		12,091		71,694		1,630
	Total consumer		104,244		112,532		24,921		106,264		2,791
	Total loans(b)	$	288,741	$	325,890	$	53,751	$	300,635	$	7,285
	(a) Interest income recognized included $4 million of interest income recognized on accruing restructured loans for the nine months ended September 30, 2014.
	(b) The implied fair value mark on all impaired loans at September 30, 2014, was 72% of their unpaid principal balance. The fair value mark is calculated as the recorded investment, net of the related allowance, divided by the unpaid principal balance.
	The following table presents impaired loans at December 31, 2013.
			Recorded Investment		Unpaid Principal Balance		Related Allowance		YTD Average Recorded Investment		YTD Interest Income Recognized (a)
	Loans with a related allowance		($ in Thousands)
	Commercial and industrial	$	57,857	$	65,443	$	11,917	$	61,000	$	1,741
	Commercial real estate - owner occupied		22,651		25,072		2,955		24,549		995
	Lease financing		69		69		29		76		-
	Commercial and business lending		80,577		90,584		14,901		85,625		2,736
	Commercial real estate - investor		64,647		68,228		7,895		68,776		2,735
	Real estate construction		8,815		12,535		2,416		9,796		236
	Commercial real estate lending		73,462		80,763		10,311		78,572		2,971
	Total commercial		154,039		171,347		25,212		164,197		5,707
	Home equity		34,707		40,344		13,989		36,623		1,518
	Installment		1,360		1,676		487		1,753		100
	Residential mortgage		60,157		69,699		12,187		62,211		1,861
	Total consumer		96,224		111,719		26,663		100,587		3,479
	Total loans	$	250,263	$	283,066	$	51,875	$	264,784	$	9,186
	Loans with no related allowance
Commercial and industrial	$	12,379	$	19,556	$	-	$	14,291	$	306
Commercial real estate - owner occupied		20,022		22,831		-		20,602		315
Lease financing		-		-		-		-		-
Commercial and business lending		32,401		42,387		-		34,893		621
Commercial real estate - investor		17,895		25,449		-		19,354		130
Real estate construction		1,445		1,853		-		1,576		13
Commercial real estate lending		19,340		27,302		-		20,930		143
Total commercial		51,741		69,689		-		55,823		764
Home equity		93		92		-		94		2
Installment		-		-		-		-		-
Residential mortgage		7,316		8,847		-		7,321		185
Total consumer		7,409		8,939		-		7,415		187
Total loans	$	59,150	$	78,628	$	-	$	63,238	$	951
Total
Commercial and industrial	$	70,236	$	84,999	$	11,917	$	75,291	$	2,047
Commercial real estate - owner occupied		42,673		47,903		2,955		45,151		1,310
Lease financing		69		69		29		76		-
Commercial and business lending		112,978		132,971		14,901		120,518		3,357
Commercial real estate - investor		82,542		93,677		7,895		88,130		2,865
Real estate construction		10,260		14,388		2,416		11,372		249
Commercial real estate lending		92,802		108,065		10,311		99,502		3,114
Total commercial		205,780		241,036		25,212		220,020		6,471
Home equity		34,800		40,436		13,989		36,717		1,520
Installment		1,360		1,676		487		1,753		100
Residential mortgage		67,473		78,546		12,187		69,532		2,046
Total consumer		103,633		120,658		26,663		108,002		3,666
Total loans (b)	$	309,413	$	361,694	$	51,875	$	328,022	$	10,137
(a) Interest income recognized included $6 million of interest income recognized on accruing restructured loans for the year ended December 31, 2013.
(b) The implied fair value mark on all impaired loans at December 31, 2013, was 71% of their unpaid principal balance. The fair value mark is calculated as the recorded investment, net of the related allowance, divided by the unpaid principal balance.
Nonaccrual and Performing Restructured Loans	'
			30-Sep-14						31-Dec-13
			Performing Restructured Loans			Nonaccrual Restructured Loans *			Performing Restructured Loans			Nonaccrual Restructured Loans *
			($ in Thousands)
	Commercial and industrial	$	36,956		$	4,759		$	32,517		$	6,900
	Commercial real estate - owner occupied		11,574			8,031			13,009			10,999
	Commercial real estate - investor		24,439			17,472			44,946			18,069
	Real estate construction		805			2,833			3,793			2,065
	Home equity		10,582			6,729			9,633			5,419
	Installment and credit cards		1,106			230			246			451
	Residential mortgage		19,141			23,260			19,841			15,682
	Total	$	104,603		$	63,314		$	123,985		$	59,585
	* Nonaccrual restructured loans have been included with nonaccrual loans.
Summary of Restructured Loans	'
	The following table provides the number of loans modified in a troubled debt restructuring by loan portfolio during the three and nine months ended September 30, 2014, and the recorded investment and unpaid principal balance as of September 30, 2014.
			Three Months Ended September 30, 2014						Nine Months Ended September 30, 2014
			Number of Loans		Recorded Investment (1)		Unpaid Principal Balance (2)		Number of Loans		Recorded Investment (1)		Unpaid Principal Balance (2)
			($ in Thousands)
	Commercial and industrial		10	$	7,383	$	7,384		13	$	7,695	$	7,707
	Commercial real estate - owner occupied		―		―		―		2		1,123		1,260
	Commercial real estate - investor		3		5,603		5,918		4		6,096		6,425
	Real estate construction		1		8		8		2		14		14
	Home equity		42		1,428		1,486		94		3,407		3,593
	Installment and credit cards		2		25		25		3		34		45
	Residential mortgage		45		4,057		4,347		85		8,004		8,555
	Total		103	$	18,504	$	19,168		203	$	26,373	$	27,599
	(1) Represents post-modification outstanding recorded investment.
	(2) Represents pre-modification outstanding recorded investment.
	The following table provides the number of loans modified in a troubled debt restructuring by loan portfolio during the three and nine months ended September 30, 2013, and the recorded investment and unpaid principal balance as of September 30, 2013.
			Three Months Ended September 30, 2013						Nine Months Ended September 30, 2013
			Number of Loans		Recorded Investment (1)		Unpaid Principal Balance (2)		Number of Loans		Recorded Investment (1)		Unpaid Principal Balance (2)
			($ in Thousands)
	Commercial and industrial		19	$	5,479	$	6,384		58	$	11,379	$	14,028
	Commercial real estate - owner occupied		7		3,373		3,488		17		9,313		9,596
	Commercial real estate - investor		10		1,222		1,304		18		5,013		5,320
	Real estate construction		3		227		248		9		2,006		2,084
	Home equity		16		933		985		74		4,149		4,554
	Installment		―		―		―		2		187		193
	Residential mortgage		19		1,664		1,826		71		6,744		7,619
	Total		74	$	12,898	$	14,235		249	$	38,791	$	43,394
	(1) Represents post-modification outstanding recorded investment.
	(2) Represents pre-modification outstanding recorded investment.
Troubled debt restructurings subsequent redefault	'
			Three Months Ended September 30, 2014				Nine Months Ended September 30, 2014
			Number of Loans	Recorded Investment			Number of Loans		Recorded Investment
			($ in Thousands)
	Commercial and industrial		―	$	―		1	$	52
	Commercial real estate - owner occupied		―		―		2		203
	Commercial real estate - investor		1		493		2		1,613
	Real estate construction		―		―		1		160
	Home equity		12		367		25		939
	Installment and credit cards		1		10		3		34
	Residential mortgage		18		1,502		50		4,743
	Total		32	$	2,372		84	$	7,744
			Three Months Ended September 30, 2013				Nine Months Ended September 30, 2013
			Number of Loans	Recorded Investment			Number of Loans		Recorded Investment
			($ in Thousands)
	Commercial and industrial		8	$	506		18	$	1,626
	Commercial real estate - owner occupied		2		464		4		578
	Commercial real estate - investor		1		405		5		1,992
	Real estate construction		1		118		2		158
	Home equity		4		147		12		699
	Residential mortgage		8		1,150		15		2,385
	Total		24	$	2,790		56	$	7,438
Commercial Loan [Member]	'
Financing Receivable, Impaired [Line Items]	'
Commercial and Consumer loans by credit quality indicator	'
	The following table presents commercial loans by credit quality indicator at September 30, 2014.
			Pass		Special Mention		Potential Problem		Impaired		Total
			($ in Thousands)
	Commercial and industrial	$	5,268,521	$	113,864	$	133,416	$	88,098	$	5,603,899
	Commercial real estate - owner occupied		900,306		29,107		49,008		35,914		1,014,335
	Lease financing		45,506		1,360		3,787		1,947		52,600
	Commercial and business lending		6,214,333		144,331		186,211		125,959		6,670,834
	Commercial real estate - investor		2,930,817		34,524		28,474		49,546		3,043,361
	Real estate construction		967,914		3,293		2,227		8,992		982,426
	Commercial real estate lending		3,898,731		37,817		30,701		58,538		4,025,787
	Total commercial	$	10,113,064	$	182,148	$	216,912	$	184,497	$	10,696,621
	The following table presents commercial loans by credit quality indicator at December 31, 2013.
			Pass		Special Mention		Potential Problem		Impaired		Total
			($ in Thousands)
	Commercial and industrial	$	4,485,160	$	153,615	$	113,669	$	70,236	$	4,822,680
	Commercial real estate - owner occupied		959,849		55,404		56,789		42,673		1,114,715
	Lease financing		52,733		897		1,784		69		55,483
	Commercial and business lending		5,497,742		209,916		172,242		112,978		5,992,878
	Commercial real estate - investor		2,740,255		64,230		52,429		82,542		2,939,456
	Real estate construction		877,911		2,814		5,263		10,260		896,248
	Commercial real estate lending		3,618,166		67,044		57,692		92,802		3,835,704
	Total commercial	$	9,115,908	$	276,960	$	229,934	$	205,780	$	9,828,582
Consumer Loan [Member]	'
Financing Receivable, Impaired [Line Items]	'
Commercial and Consumer loans by credit quality indicator	'
	The following table presents consumer loans by credit quality indicator at September 30, 2014.
			Performing		30-89 Days Past Due		Potential Problem		Impaired		Total
			($ in Thousands)
	Home equity	$	1,633,033	$	10,738	$	911	$	31,843	$	1,676,525
	Installment and credit cards		456,101		1,818		4		1,759		459,682
	Residential mortgage		4,250,223		3,231		2,166		70,642		4,326,262
	Total consumer	$	6,339,357	$	15,787	$	3,081	$	104,244	$	6,462,469
	The following table presents consumer loans by credit quality indicator at December 31, 2013.
			Performing		30-89 Days Past Due		Potential Problem		Impaired		Total
			($ in Thousands)
	Home equity	$	1,777,421	$	10,680	$	2,113	$	34,800	$	1,825,014
	Installment		404,514		1,150		50		1,360		407,074
	Residential mortgage		3,758,688		6,118		3,312		67,473		3,835,591
	Total consumer	$	5,940,623	$	17,948	$	5,475	$	103,633	$	6,067,679

Recovered_Sheet1

Goodwill and Other Intangible Assets (Tables)	9 Months Ended
	Sep. 30, 2014
Goodwill and Other Intangible Assets [Abstract]	'
Summary of core deposit intangibles and other intangibles	'
		Nine Months Ended			Year Ended
		30-Sep-14			31-Dec-13
			($ in Thousands)
	Core deposit intangibles:
	Gross carrying amount	$	36,230		$	36,230
	Accumulated amortization		-33,878			-31,565
	Net book value	$	2,352		$	4,665
	Amortization during the period	$	2,313		$	3,122
	Other intangibles:
	Gross carrying amount	$	19,283		$	19,283
	Accumulated amortization		-13,423			-12,764
	Net book value	$	5,860		$	6,519
	Amortization during the period	$	659		$	921
Summary of changes in balance of mortgage servicing rights asset and mortgage servicing rights valuation allowance	'
			Nine Months Ended			Year Ended
			30-Sep-14			31-Dec-13
				($ in Thousands)
	Mortgage servicing rights:
	Mortgage servicing rights at beginning of period		$	64,193		$	61,425
		Additions		5,844			18,256
		Amortization		-8,224			-15,488
	Mortgage servicing rights at end of period		$	61,813		$	64,193
	Valuation allowance at beginning of period			-913			-15,476
		Recoveries, net		89			14,563
	Valuation allowance at end of period			-824			-913
	Mortgage servicing rights, net		$	60,989		$	63,280
	Fair value of mortgage servicing rights		$	69,940		$	74,444
	Portfolio of residential mortgage loans serviced for others (“servicing portfolio”)			8,012,000			8,084,000
	Mortgage servicing rights, net to servicing portfolio			0.76	%		0.78	%
	Mortgage servicing rights expense (1)		$	8,135		$	925
Summary of estimated future amortization expense	'
		Core Deposit			Other			Mortgage Servicing
	Estimated amortization expense:	Intangibles			Intangibles			Rights
			($ in Thousands)
	Three months ending December 31, 2014	$	555		$	220		$	2,773
	Year ending December 31, 2015		1,404			839			9,760
	Year ending December 31, 2016		281			803			8,084
	Year ending December 31, 2017		112			770			6,727
	Year ending December 31, 2018		―			740			5,621
	Year ending December 31, 2019		―			441			4,721
	Beyond 2019		―			2,047			24,127
	Total Estimated Amortization Expense	$	2,352		$	5,860		$	61,813

Short_And_Longterm_Funding_Tab

Short And Long-term Funding (Tables)	9 Months Ended
	Sep. 30, 2014
Debt Disclosure [Abstract]	'
Breakdown of short and long-term debt balances	'
				September 30,		December 31,
				2014		2013
				($ in Thousands)
	Short-Term Funding
	Federal funds purchased		$	272,190	$	56,195
	Securities sold under agreements to repurchase			493,451		419,247
		Federal funds purchased and securities sold under agreements to repurchase		765,641		475,442
	FHLB advances			605,000		200,000
	Commercial paper			59,539		65,484
		Other short-term funding		664,539		265,484
		Total short-term funding	$	1,430,180	$	740,926
	Long-Term Funding
	FHLB advances		$	2,500,268	$	2,500,297
	Senior notes, at par			430,000		585,000
	Other long-term funding and capitalized costs			1,279		1,970
		Total long-term funding	$	2,931,547	$	3,087,267
	Total short and long-term funding		$	4,361,727	$	3,828,193

Derivative_and_Hedging_Activit1

Derivative and Hedging Activities (Tables)	9 Months Ended
	Sep. 30, 2014
Derivative and Hedging Activities [Abstract]	'
Balance sheet category and fair values of derivative instruments not designated as hedging instruments	'
									Weighted Average
	($ in Thousands)			Notional		Fair		Balance Sheet	Receive		Pay
				Amount		Value		Category	Rate(1)		Rate(1)		Maturity
	30-Sep-14
	Interest rate-related instruments — customer and mirror		$	1,665,024	$	31,862		Trading assets	1.62	%	1.62	%	41	months
	Interest rate-related instruments — customer and mirror			1,665,024		-34,071		Trading liabilities	1.62	%	1.62	%	41	months
	Interest rate lock commitments (mortgage)			145,037		1,440		Other assets	-		-			-
	Forward commitments (mortgage)			247,000		-623		Other liabilities	-		-			-
	Foreign currency exchange forwards			69,737		2,143		Trading assets	-		-			-
	Foreign currency exchange forwards			65,277		-1,932		Trading liabilities	-		-			-
	Purchased options (time deposit)			111,163		6,943		Other assets	-		-			-
	Written options (time deposit)			111,163		-6,943		Other liabilities	-		-			-
	31-Dec-13
	Interest rate-related instruments — customer and mirror		$	1,821,787	$	42,980		Trading assets	1.63	%	1.63	%	45	months
	Interest rate-related instruments — customer and mirror			1,821,787		-45,815		Trading liabilities	1.63	%	1.63	%	45	months
	Interest rate lock commitments (mortgage)			102,225		416		Other assets	-		-			-
	Forward commitments (mortgage)			135,000		1,301		Other assets	-		-			-
	Foreign currency exchange forwards			25,747		748		Trading assets	-		-			-
	Foreign currency exchange forwards			24,413		-655		Trading liabilities	-		-			-
	Purchased options (time deposit)			115,953		7,328		Other assets	-		-			-
	Written options (time deposit)			115,953		-7,328		Other liabilities	-		-			-
	-1	Reflects the weighted average receive rate and pay rate for the interest rate swap derivative financial instruments only.
Gain (loss) on derivative instruments not designated as hedging instruments	'
				Income Statement Category of		Gain / (Loss)
				Gain / (Loss) Recognized in Income		Recognized in Income
							($ in Thousands)
		Nine Months Ended September 30, 2014
		Interest rate-related instruments — customer and mirror, net		Capital market fees, net		$	626
		Interest rate lock commitments (mortgage)		Mortgage banking, net			1,024
		Forward commitments (mortgage)		Mortgage banking, net			-1,924
		Foreign currency exchange forwards		Capital market fees, net			118
		Nine Months Ended September 30, 2013
		Interest rate-related instruments — customer and mirror, net		Capital market fees, net		$	2,600
		Interest rate lock commitments (mortgage)		Mortgage banking, net			-4,234
		Forward commitments (mortgage)		Mortgage banking, net			-4,406
		Foreign currency exchange forwards		Capital market fees, net			4

Balance_Sheet_Offsetting_Table

Balance Sheet Offsetting (Tables)	9 Months Ended
	Sep. 30, 2014
Balance Sheet Offsetting Disclosure [Abstract]	'
Balance Sheet Offsetting of Derivative Assets and Liabilities	'
	30-Sep-14								Gross amounts not offset
		Gross		Gross amounts		Net amounts			in the balance sheet
		amounts		offset in the		presented in		Financial
		recognized		balance sheet		the balance sheet		instruments			Collateral	Net amount
		($ in Thousands)
	Derivative assets:
	Interest rate-related instruments	$	1,406	$	―	$	1,406	$	-1,406	$	―	$	―
	Derivative liabilities:
	Interest rate-related instruments	$	31,898	$	―	$	31,898	$	-1,406	$	-21,149	$	9,343
	31-Dec-13
	Derivative assets:
	Interest rate-related instruments	$	3,084	$	―	$	3,084	$	-3,082	$	―	$	2
	Derivative liabilities:
	Interest rate-related instruments	$	41,786	$	―	$	41,786	$	-3,082	$	-33,405	$	5,299

Commitments_OffBalance_Sheet_A1

Commitments, Off-Balance Sheet Arrangements and Contingent Liabilities (Tables)	9 Months Ended
	Sep. 30, 2014
Commitments, off-balance Sheet Arrangements, and Contingent Liabilities [Abstract]	'
Summary of lending-related and other commitments	'
				30-Sep-14		31-Dec-13
				($ in Thousands)
	Commitments to extend credit, excluding commitments to originate residential
		mortgage loans held for sale(1)(2)	$	6,703,718	$	6,367,771
	Commercial letters of credit (1)			8,705		12,034
	Standby letters of credit (3)			352,445		370,773
Summary of changes in the residential mortgage repurchase reserve	'
				For the Nine
				Months Ended		For the Year Ended
				30-Sep-14		31-Dec-13
				($ in Thousands)
	Balance at beginning of period		$	5,700	$	3,300
	Repurchase provision (recovery) expense			-1,883		5,909
	Charge offs			-417		-3,509
	Balance at end of period		$	3,400	$	5,700

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'
Assets and Liabilities Measured at Fair Value Using Significant Unobservable Inputs (Level 3)	'
	Assets and Liabilities Measured at Fair Value
	Using Significant Unobservable Inputs (Level 3)
				Investment Securities Available for Sale			Derivative Financial Instruments
	($ in Thousands)
	Balance December 31, 2012			$	480		$	7,647
		Total net losses included in income:
			Mortgage derivative loss		―			-5,930
		Total net losses included in other comprehensive income:
			Unrealized investment securities loss		-70			―
		Sales of investment securities			-111			―
	Balance December 31, 2013			$	299		$	1,717
		Total net losses included in income:
			Mortgage derivative loss		―			-900
		Sales of investment securities			-99			―
	Balance September 30, 2014			$	200		$	817
Assets and Liabilities Measured on Nonrecurring Basis at Fair Value	'
	Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis
						Fair Value Measurements Using
		30-Sep-14				Level 1			Level 2			Level 3
			($ in Thousands)
	Assets:
	Loans held for sale	$	142,097		$	―		$	142,097		$	―
	Impaired loans (1)		83,771			―			―			83,771
	Mortgage servicing rights		69,940			―			―			69,940
						Fair Value Measurements Using
		31-Dec-13				Level 1			Level 2			Level 3
			($ in Thousands)
	Assets:
	Loans held for sale	$	64,738		$	―		$	64,738		$	―
	Impaired loans (1)		88,049			―			―			88,049
	Mortgage servicing rights		74,444			―			―			74,444
Estimated fair values of financial instruments	'
			30-Sep-14
			Carrying				Fair Value Measurements Using
			Amount		Fair Value		Level 1		Level 2		Level 3
			($ in Thousands)
	Financial assets:
	Cash and due from banks	$	381,287	$	381,287	$	381,287	$	―	$	―
	Interest-bearing deposits in other financial institutions		74,945		74,945		74,945		―		―
	Federal funds sold and securities purchased under
	agreements to resell		18,320		18,320		18,320		―		―
	Investment securities held to maturity		301,941		307,882		―		307,882		―
	Investment securities available for sale		5,345,422		5,345,422		3,662		5,341,560		200
	FHLB and Federal Reserve Bank stocks		188,875		188,875		―		188,875		―
	Loans held for sale		141,672		142,097		―		142,097		―
	Loans, net		16,892,828		17,038,692		―		―		17,038,692
	Bank owned life insurance		571,422		571,422		―		571,422		―
	Accrued interest receivable		69,609		69,609		69,609		―		―
	Interest rate-related instruments		31,862		31,862		―		31,862		―
	Foreign currency exchange forwards		2,143		2,143		―		2,143		―
	Interest rate lock commitments to originate residential
	mortgage loans held for sale		1,440		1,440		―		―		1,440
	Purchased options (time deposit)		6,943		6,943		―		6,943		―
	Financial liabilities:
	Noninterest-bearing demand, savings, interest-bearing
	demand, and money market deposits	$	16,687,892	$	16,687,892	$	―	$	―	$	16,687,892
	Brokered CDs and other time deposits		1,513,366		1,513,366		―		1,513,366		―
	Short-term funding		1,430,180		1,430,180		―		1,430,180		―
	Long-term funding		2,931,547		2,922,749		―		2,922,749		―
	Accrued interest payable		1,543		1,543		1,543		―		―
	Interest rate-related instruments		34,071		34,071		―		34,071		―
	Foreign currency exchange forwards		1,932		1,932		―		1,932		―
	Standby letters of credit (1)		3,526		3,526		―		3,526		―
	Forward commitments to sell residential mortgage loans		623		623		―		―		623
	Written options (time deposit)		6,943		6,943		―		6,943		―
			31-Dec-13
			Carrying				Fair Value Measurements Using
			Amount		Fair Value		Level 1		Level 2		Level 3
			($ in Thousands)
	Financial assets:
	Cash and due from banks	$	455,482	$	455,482	$	455,482	$	―	$	―
	Interest-bearing deposits in other financial institutions		126,018		126,018		126,018		―		―
	Federal funds sold and securities purchased under
	agreements to resell		20,745		20,745		20,745		―		―
	Investment securities held to maturity		175,210		169,889		―		169,889		―
	Investment securities available for sale		5,250,585		5,250,585		4,240		5,246,046		299
	FHLB and Federal Reserve Bank stocks		181,249		181,249		―		181,249		―
	Loans held for sale		64,738		64,738		―		64,738		―
	Loans, net		15,627,946		15,599,094		―		―		15,599,094
	Bank owned life insurance		568,413		568,413		―		568,413		―
	Accrued interest receivable		66,308		66,308		66,308		―		―
	Interest rate-related instruments		42,980		42,980		―		42,980		―
	Foreign currency exchange forwards		748		748		―		748		―
	Interest rate lock commitments to originate residential
	mortgage loans held for sale		416		416		―		―		416
	Forward commitments to sell residential mortgage loans		1,301		1,301		―		―		1,301
	Purchased options (time deposit)		7,328		7,328		―		7,328		―
	Financial liabilities:
	Noninterest-bearing demand, savings, interest-bearing
	demand, and money market deposits	$	15,581,971	$	15,581,971	$	―	$	―	$	15,581,971
	Brokered CDs and other time deposits		1,685,196		1,687,198		―		1,687,198		―
	Short-term funding		740,926		740,926		―		740,926		―
	Long-term funding		3,087,267		3,085,893		―		3,085,893		―
	Accrued interest payable		7,994		7,994		7,994		―		―
	Interest rate-related instruments		45,815		45,815		―		45,815		―
Foreign currency exchange forwards		655		655		―		655		―
Standby letters of credit (1)		3,754		3,754		―		3,754		―
Written options (time deposit)		7,328		7,328		―		7,328		―
Fair Value, Measurements, Recurring [Member]	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'
Assets and Liabilities Measured on Recurring Basis at Fair Value	'
	Assets and Liabilities Measured at Fair Value on a Recurring Basis
							Fair Value Measurements Using
			30-Sep-14				Level 1			Level 2			Level 3
				($ in Thousands)
	Assets:
	Investment securities available for sale:
	U.S. Treasury securities		$	996		$	996		$	―		$	―
	Obligations of state and political subdivisions (municipal securities)			614,436			―			614,436			―
	Residential mortgage-related securities:
		Government-sponsored enterprise (GSE)		3,741,040			―			3,741,040			―
		Private-label		2,482			―			2,482			―
	GNMA commercial mortgage-related securities			980,602			―			980,602			―
	Other securities (debt and equity)			5,866			2,666			3,000			200
		Total investment securities available for sale	$	5,345,422		$	3,662		$	5,341,560		$	200
	Derivatives (trading and other assets)		$	42,388		$	―		$	40,948		$	1,440
	Liabilities:
	Derivatives (trading and other liabilities)		$	43,569		$	―		$	42,946		$	623
							Fair Value Measurements Using
			31-Dec-13				Level 1			Level 2			Level 3
				($ in Thousands)
	Assets:
	Investment securities available for sale:
	U.S. Treasury securities		$	1,002		$	1,002		$	―		$	―
	Obligations of state and political subdivisions (municipal securities)			676,080			―			676,080			―
	Residential mortgage-related securities:
		Government-sponsored enterprise (GSE)		3,838,430			―			3,838,430			―
		Private-label		3,014			―			3,014			―
	GNMA commercial mortgage-related securities			647,477			―			647,477			―
	Asset-backed securities			23,059			―			23,059			―
	Other securities (debt and equity)			61,523			3,238			57,986			299
		Total investment securities available for sale	$	5,250,585		$	4,240		$	5,246,046		$	299
	Derivatives (trading and other assets)		$	52,773		$	―		$	51,056		$	1,717
	Liabilities:
	Derivatives (trading and other liabilities)		$	53,798		$	―		$	53,798		$	―

Retirement_Plans_Tables

Retirement Plans (Tables)	9 Months Ended
	Sep. 30, 2014
Retirement Plans [Abstract]	'
Net period benefit cost for the pension and postretirement plans	'
			Three Months Ended				Nine Months Ended			Year Ended
			September 30,				September 30,			December 31,
			2014		2013		2014		2013	2013
	Components of Net Periodic Benefit Cost		($ in Thousands)
	Pension Plan:
	Service cost	$	2,975	$	2,975	$	8,925	$	8,925	$	12,078
	Interest cost		1,790		1,548		5,370		4,643		6,237
	Expected return on plan assets		-4,855		-4,305		-14,565		-12,915		-17,647
	Amortization of prior service cost		15		17		45		52		72
	Amortization of actuarial loss		326		1,073		975		3,218		4,344
	Total net periodic benefit cost	$	251	$	1,308	$	750	$	3,923	$	5,084
	Postretirement Plan:
	Interest cost	$	39	$	40	$	116	$	120	$	142
	Amortization of actuarial gain		-9		―		-26		―		―
	Total net periodic benefit cost	$	30	$	40	$	90	$	120	$	142

Segment_Reporting_Tables

Segment Reporting (Tables)	9 Months Ended
	Sep. 30, 2014
Segment Reporting [Abstract]	'
Selected segment information	'
	Segment Income Statement Data
		($ in Thousands)		Corporate and Commercial Specialty		Community, Consumer, and Business			Risk Management and Shared Services			Consolidated Total
	Nine Months Ended September 30, 2014
	Net interest income		$	209,212		$	236,687		$	60,407		$	506,306
	Noninterest income			33,711			170,547			16,418			220,676
		Total revenue		242,923			407,234			76,825			726,982
	Credit provision *			34,983			18,572			-42,555			11,000
	Noninterest expense			103,383			353,258			50,795			507,436
	Income before income taxes			104,557			35,404			68,585			208,546
	Income tax expense			35,568			12,391			18,816			66,775
	Net income		$	68,989		$	23,013		$	49,769		$	141,771
	Return on average allocated capital (ROT1CE) **			12.5	%		5.4	%		10.5	%		9.8	%
	Nine Months Ended September 30, 2013
	Net interest income		$	222,705		$	253,716		$	1,923		$	478,344
	Noninterest income			32,175			191,236			13,815			237,226
		Total revenue		254,880			444,952			15,738			715,570
	Credit provision *			38,161			18,029			-48,390			7,800
	Noninterest expense			93,806			364,609			43,067			501,482
	Income before income taxes			122,913			62,314			21,061			206,288
	Income tax expense			43,019			21,810			525			65,354
	Net income		$	79,894		$	40,504		$	20,536		$	140,934
	Return on average allocated capital (ROT1CE) **			14.7	%		9.4	%		3.9	%		9.8	%
	Segment Balance Sheet Data
		($ in Thousands)		Corporate and Commercial Specialty		Community, Consumer, and Business			Risk Management and Shared Services			Consolidated Total
	Average Balances for YTD 3Q 2014
	Average earning assets		$	8,606,965		$	7,973,138		$	5,933,220		$	22,513,323
	Average loans			8,595,980			7,973,138			85,115			16,654,233
	Average deposits			4,841,852			10,159,818			2,347,059			17,348,729
	Average allocated capital (T1CE) **		$	736,285		$	565,588		$	585,539		$	1,887,412
	Average Balances for YTD 3Q 2013
	Average earning assets		$	7,942,744		$	7,696,572		$	5,252,541		$	20,891,857
	Average loans			7,933,954			7,696,572			3,927			15,634,453
	Average deposits			4,964,426			10,050,400			2,273,966			17,288,792
	Average allocated capital (T1CE) **		$	724,974		$	575,382		$	575,654		$	1,876,010
	Segment Income Statement Data
		($ in Thousands)		Corporate and Commercial Specialty		Community, Consumer, and Business			Risk Management and Shared Services			Consolidated Total
	Three Months Ended September 30, 2014
	Net interest income		$	71,716		$	81,916		$	18,998		$	172,630
	Noninterest income			11,888			54,601			8,419			74,908
		Total revenue		83,604			136,517			27,417			247,538
	Credit provision *			11,074			6,773			-16,847			1,000
	Noninterest expense			35,044			122,722			14,087			171,853
	Income before income taxes			37,486			7,022			30,177			74,685
	Income tax expense			12,608			2,458			9,412			24,478
	Net income		$	24,878		$	4,564		$	20,765		$	50,207
	Return on average allocated capital (ROT1CE) **			13.3	%		3.1	%		14.2	%		10.4	%
	Three Months Ended September 30, 2013
	Net interest income		$	75,677		$	85,477		$	-645		$	160,509
	Noninterest income			11,142			55,366			4,408			70,916
		Total revenue		86,819			140,843			3,763			231,425
	Credit provision *			13,097			6,041			-19,938			-800
	Noninterest expense			32,094			122,450			10,627			165,171
	Income before income taxes			41,628			12,352			13,074			67,054
	Income tax expense			14,569			4,324			2,503			21,396
	Net income		$	27,059		$	8,028		$	10,571		$	45,658
	Return on average allocated capital (ROT1CE) **			14.8	%		5.6	%		6.2	%		9.3	%
	Segment Balance Sheet Data
		($ in Thousands)		Corporate and Commercial Specialty		Community, Consumer, and Business			Risk Management and Shared Services			Consolidated Total
	Average Balances for 3Q 2014
	Average earning assets		$	8,761,870		$	8,310,839		$	6,024,008		$	23,096,717
	Average loans			8,750,207			8,310,839			79,915			17,140,961
	Average deposits			5,092,314			10,337,637			2,443,427			17,873,378
	Average allocated capital (T1CE) **		$	744,605		$	583,148		$	543,493		$	1,871,246
Average Balances for 3Q 2013
Average earning assets		$	8,080,676		$	7,647,106		$	5,311,685		$	21,039,467
Average loans			8,074,076			7,647,106			3,183			15,724,365
Average deposits			5,124,746			10,066,487			2,418,586			17,609,819
Average allocated capital (T1CE) **		$	726,588		$	567,073		$	596,736		$	1,890,397
* The consolidated credit provision is equal to the actual reported provision for credit losses.
** The Federal Reserve establishes capital adequacy requirements for the Corporation, including Tier 1 capital. Tier 1 capital is comprised of common capital and certain redeemable, non-cumulative preferred stock. Average allocated capital represents average Tier 1 common equity which is defined as average Tier 1 capital excluding qualifying perpetrual preferred stock and qualifying trust preferred securities. This is a non-GAAP financial measure. For segment reporting purposes, the ROT1CE reflects return on average allocated Tier 1 common equity ("T1CE"). The ROT1CE for the Risk Management and Shared Services segment and the Consolidated Total is inclusive of the annualized effect of the preferred stock dividends.

Accumulated_Other_Comprehensiv1

Accumulated Other Comprehensive Income (Loss) (Tables)	9 Months Ended
	Sep. 30, 2014
Accumulated Other Comprehensive Income (Loss), Net Of Tax [Abstract]	'
Summary of activity in accumulated other comprehensive income	'
				Investments	Defined Benefit			Accumulated
				Securities		Pension and		Other
				Available	Post Retirement			Comprehensive
		($ in Thousands)		For Sale		Obligations		Income (Loss)
	Balance January 1, 2014		$	-11,396	$	-12,848	$	-24,244
	Other comprehensive income before reclassifications			36,061		-		36,061
	Amounts reclassified from accumulated other comprehensive income (loss)			-469		994		525
	Income tax expense			-13,684		-383		-14,067
	Net other comprehensive income during period			21,908		611		22,519
	Balance September 30, 2014		$	10,512	$	-12,237	$	-1,725
	Balance January 1, 2013		$	86,109	$	-37,506	$	48,603
	Other comprehensive loss before reclassifications			-142,318		-		-142,318
	Amounts reclassified from accumulated other comprehensive income (loss)			-582		3,270		2,688
	Income tax (expense) benefit			55,169		-1,262		53,907
	Net other comprehensive income (loss) during period			-87,731		2,008		-85,723
	Balance September 30, 2013		$	-1,622	$	-35,498	$	-37,120
				Investments	Defined Benefit			Accumulated
				Securities		Pension and		Other
				Available	Post Retirement			Comprehensive
				For Sale		Obligations		Income (Loss)
	Balance July 1, 2014		$	22,935	$	-12,441	$	10,494
	Other comprehensive loss before reclassifications			-20,123		-		-20,123
	Amounts reclassified from accumulated other comprehensive income (loss)			-57		332		275
	Income tax (expense) benefit			7,757		-128		7,629
	Net other comprehensive income (loss) during period			-12,423		204		-12,219
	Balance September 30, 2014		$	10,512	$	-12,237	$	-1,725
	Balance July 1, 2013		$	11,153	$	-36,168	$	-25,015
	Other comprehensive loss before reclassifications			-20,558		-		-20,558
	Amounts reclassified from accumulated other comprehensive income (loss)			-248		1,090		842
	Income tax (expense) benefit			8,031		-420		7,611
	Net other comprehensive income (loss) during period			-12,775		670		-12,105
	Balance September 30, 2013		$	-1,622	$	-35,498	$	-37,120

Earnings_Per_Share_Details

Earnings Per Share (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Share data, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Calculations for basic and diluted earnings per common share	'	'	'	'
Net income	$50,207	$45,658	$141,771	$140,934
Preferred stock dividends and discount accretion	-1,255	-1,285	-3,777	-3,885
Net income available to common equity	48,952	44,373	137,994	137,049
Common shareholder dividends	-13,983	-13,167	-42,864	-39,849
Unvested share-based payment awards	-140	-100	-435	-374
Undistributed earnings	34,829	31,106	94,695	96,826
Undistributed earnings allocated to common shareholders	34,481	30,873	93,862	96,112
Undistributed earnings allocated to unvested share-based payment awards	348	233	833	714
Undistributed earnings	34,829	31,106	94,695	96,826
Basic	'	'	'	'
Distributed earnings to common shareholders	13,983	13,167	42,864	39,849
Undistributed earnings allocated to common shareholders	34,481	30,873	93,862	96,112
Total common shareholders earnings, basic	48,464	44,040	136,726	135,961
Diluted	'	'	'	'
Distributed earnings to common shareholders	13,983	13,167	42,864	39,849
Undistributed earnings allocated to common shareholders	34,481	30,873	93,862	96,112
Total common shareholders earnings, diluted	$48,464	$44,040	$136,726	$135,961
Weighted average common shares outstanding	155,925,000	164,954,000	159,090,000	166,586,000
Effect of dilutive common stock awards	1,066,000	489,000	903,000	174,000
Diluted weighted average common shares outstanding	156,991,000	165,443,000	159,993,000	166,760,000
Basic earnings per common share	$0.31	$0.27	$0.86	$0.82
Diluted earnings per common share	$0.31	$0.27	$0.85	$0.82
Earnings Per Share (Textuals) [Abstract]	'	'	'	'
Number of antidilutive stock options excluded from the computation of diluted earnings per share	2,000,000	3,000,000	3,000,000	3,000,000

StockBased_Compensation_Stock_

Stock-Based Compensation Stock Option Activity (Details) (USD $)	9 Months Ended	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Fair value assumptions of stock options	'	'
Dividend yield	2.00%	2.00%
Risk-free interest rate	2.00%	0.99%
Weighted average expected volatility	20.00%	34.35%
Weighted average expected life	'6 years	'6 years
Weighted average per share fair value of stock options	$3	$3.80
Summary of Company's Stock Option Activities	'	'
Stock Options Shares Outstanding, Beginning balance	8,034,243	8,640,558
Granted, Shares	1,389,452	1,020,979
Exercised, Shares	-754,470	-642,202
Forfeited or expired, Shares	-589,238	-985,092
Stock Options Shares Outstanding, Ending balance	8,079,987	8,034,243
Options exercisable, shares	5,225,930	4,923,720
Stock Options Outstanding, Weighted Average Exercise Price, Beginning balance	$18.37	$18.88
Granted, Weighted Average Exercise Price	$17.45	$14.02
Exercised, Weighted Average Exercise Price	$13.74	$13.43
Forfeited or expired, Weighted Average Exercise Price	$24.36	$21.49
Stock Options Outstanding, Weighted Average Exercise Price, Ending balance	$18.21	$18.37
Options Exercisable, Weighted Average Exercise Price	$19.78	$21.48
Stock Options Outstanding, Weighted Average Remaining Contractual Term	'6 years 1 month	'6 years 0 months
Options exercisable, Weighted Average Remaining Contractual Term	'4 years 9 months	'4 years 7 months
Stock Options Outstanding, Aggregate Intrinsic Value	$17,762	$20,838
Options exercisable, Aggregate Intrinsic Value	$11,624	$8,580

Stock_Based_Compensation_Nonve

Stock Based Compensation Nonvested Stock Option Activity (Details) (USD $)	9 Months Ended	12 Months Ended
In Millions, except Share data, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Summary of nonvested stock activity	'	'
Instrinsic value of stock options exercised	$3	$2
Granted, Shares	1,389,452	1,020,979
Nonvested Stock Options [Member]	'	'
Summary of nonvested stock activity	'	'
Stock Options Shares Outstanding, Beginning balance	3,110,523	4,036,595
Granted, Shares	1,389,452	1,020,979
Vested, Shares	-1,492,733	-1,680,981
Forfeited, Shares	-153,185	-266,070
Stock Options Shares Outstanding, Ending balance	2,854,057	3,110,523
Nonvested Weighted Average Grant Date Fair Value, Beginning balance	$4.69	$5.11
Granted Weighted Average Grant Date Fair Value	$3	$3.80
Vested Weighted Average Grant Date Fair Value	$4.95	$5.10
Forfeited Weighted Average Grant Date Fair Value	$4.41	$5.05
Nonvested Weighted Average Grant Date Fair Value, Ending balance	$3.75	$4.69

Stock_Based_Compensation_Restr

Stock Based Compensation Restricted Stock Activity (Details) (Restricted Stock Award [Member], USD $)	9 Months Ended	12 Months Ended
	Sep. 30, 2014	Dec. 31, 2013
Restricted Stock Award [Member]	'	'
Summary of Restricted Stock Awards Activity (Excluding Salary Shares)	'	'
Outstanding Shares, Beginning balance	1,511,765	932,425
Granted, Shares	1,158,711	1,276,868
Vested, Shares	-526,784	-626,480
Forfeited, Shares	-124,222	-71,048
Outstanding Shares, Ending balance	2,019,470	1,511,765
Outstanding, Weighted Average Grant Date Fair Value, Beginning balance	$13.92	$13.60
Granted, Weighted Average Grant Date Fair Value	$17.41	$14.03
Vested, Weighted Average Grant Date Fair Value	$14.13	$13.68
Forfeited, Weighted Average Grant Date Fair Value	$15.06	$13.92
Outstanding Weighted Average Grant Date Fair Value, Ending balance	$15.80	$13.92

Stock_Based_Compensation_Detai

Stock Based Compensation (Details Textuals) (USD $)	9 Months Ended		12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Stock Based Compensation (Textuals) [Abstract]	'	'	'
Total fair value of vested stock options	$7,000,000	'	$9,000,000
Instrinsic value of stock options exercised	3,000,000	'	2,000,000
Employee Stock Option [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Recognized compensation expense for accelerated vesting of stock options	250,000	'	'
Recognized compensation expense for vesting of stock options	5,000,000	6,000,000	8,000,000
Unvested share-based payment awards	6,000,000	'	'
Total compensation cost not yet recognized, period for recognition	'fourth quarter 2018	'	'
Restricted Stock Award [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Recognized compensation expense for accelerated vesting of stock options	1,100,000	'	'
Recognized compensation expense for vesting of stock options	8,000,000	6,000,000	7,000,000
Unvested share-based payment awards	$24,000,000	'	'
Total compensation cost not yet recognized, period for recognition	'fourth quarter 2018	'	'

Investment_Securities_AFS_Secu

Investment Securities AFS Securities Amortized Cost and Fair Value (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Investment securities available for sale:	'	'
Investment securities available for sale, amortized cost	$5,329,821	$5,270,576
Investment securities available for sale, gross unrealized gains	87,096	88,043
Investment securities available for sale, gross unrealized losses	-71,495	-108,034
Investment securities available for sale, fair value	5,345,422	5,250,585
US Treasury Securities [Member]	'	'
Investment securities available for sale:	'	'
Investment securities available for sale, amortized cost	999	1,001
Investment securities available for sale, gross unrealized gains	0	1
Investment securities available for sale, gross unrealized losses	-3	0
Investment securities available for sale, fair value	996	1,002
Obligations of state and political subdivisions (municipal securities) [Member]	'	'
Investment securities available for sale:	'	'
Investment securities available for sale, amortized cost	588,255	653,758
Investment securities available for sale, gross unrealized gains	26,229	23,855
Investment securities available for sale, gross unrealized losses	-48	-1,533
Investment securities available for sale, fair value	614,436	676,080
Government-Sponsored Enterprise (GSE) [Member]	'	'
Investment securities available for sale:	'	'
Investment securities available for sale, amortized cost	3,725,218	3,855,467
Investment securities available for sale, gross unrealized gains	59,047	61,542
Investment securities available for sale, gross unrealized losses	-43,225	-78,579
Investment securities available for sale, fair value	3,741,040	3,838,430
Private Label [Member]	'	'
Investment securities available for sale:	'	'
Investment securities available for sale, amortized cost	2,475	3,035
Investment securities available for sale, gross unrealized gains	9	16
Investment securities available for sale, gross unrealized losses	-2	-37
Investment securities available for sale, fair value	2,482	3,014
GNMA commercial mortgage-related securities [Member]	'	'
Investment securities available for sale:	'	'
Investment securities available for sale, amortized cost	1,007,068	673,555
Investment securities available for sale, gross unrealized gains	1,751	1,764
Investment securities available for sale, gross unrealized losses	-28,217	-27,842
Investment securities available for sale, fair value	980,602	647,477
Asset-backed Securities [Member]	'	'
Investment securities available for sale:	'	'
Investment securities available for sale, amortized cost	0	23,049
Investment securities available for sale, gross unrealized gains	0	10
Investment securities available for sale, gross unrealized losses	0	0
Investment securities available for sale, fair value	0	23,059
Other Debt And Other Equity Securities [Member]	'	'
Investment securities available for sale:	'	'
Investment securities available for sale, amortized cost	5,806	60,711
Investment securities available for sale, gross unrealized gains	60	855
Investment securities available for sale, gross unrealized losses	0	-43
Investment securities available for sale, fair value	$5,866	$61,523

Investment_Securities_HTM_Secu

Investment Securities HTM Securities Amortized Cost and Fair Value (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Investment securities held to maturity:	'	'
Investment securities held to maturity at amortized cost	$301,941	$175,210
Investment securities held to maturity, gross unrealized gains	6,875	401
Investment securities held to maturity, gross unrealized losses	-934	-5,722
Investment securities held to maturity, fair value	307,882	169,889
Obligations of state and political subdivisions (municipal securities) [Member]	'	'
Investment securities held to maturity:	'	'
Investment securities held to maturity at amortized cost	301,941	175,210
Investment securities held to maturity, gross unrealized gains	6,875	401
Investment securities held to maturity, gross unrealized losses	-934	-5,722
Investment securities held to maturity, fair value	$307,882	$169,889

Investment_Securities_AFS_Cont

Investment Securities AFS Contractual Maturity Table (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Amortized cost and fair values of investment securities available for sale by contractual maturity	'	'
Securities available for sale, debt securities due in one year or less, amortized cost	$28,053	'
Securities available for sale, debt securities due after one year through five years, amortized cost	224,059	'
Securities available for sale, debt securities due after five years through ten years, amortized cost	333,788	'
Securities available for sale, debt securities due after ten years, amortized cost	9,142	'
Total available for sale debt securities, amortized cost	595,042	'
Securities available for sale, debt securities due in one year or less, fair value	28,232	'
Securities available for sale, debt securities due after one year through five years, fair value	236,326	'
Securities available for sale, debt securities due after five years through ten years, fair value	347,187	'
Securities available for sale, debt securities due after ten years, fair value	9,480	'
Total available for sale debt securities, Fair value	621,225	'
Investment securities available for sale, amortized cost	5,329,821	5,270,576
Investment securities available for sale, fair value	5,345,422	5,250,585
Ratio of Fair Value to Amortized Cost, AFS	100.30%	'
Government-Sponsored Enterprise (GSE) [Member]	'	'
Amortized cost and fair values of investment securities available for sale by contractual maturity	'	'
Investment securities available for sale, amortized cost	3,725,218	3,855,467
Investment securities available for sale, fair value	3,741,040	3,838,430
Private Label [Member]	'	'
Amortized cost and fair values of investment securities available for sale by contractual maturity	'	'
Investment securities available for sale, amortized cost	2,475	3,035
Investment securities available for sale, fair value	2,482	3,014
GNMA commercial mortgage-related securities [Member]	'	'
Amortized cost and fair values of investment securities available for sale by contractual maturity	'	'
Investment securities available for sale, amortized cost	1,007,068	673,555
Investment securities available for sale, fair value	980,602	647,477
Asset-backed Securities [Member]	'	'
Amortized cost and fair values of investment securities available for sale by contractual maturity	'	'
Investment securities available for sale, amortized cost	0	23,049
Investment securities available for sale, fair value	0	23,059
Equity Securities [Member]	'	'
Amortized cost and fair values of investment securities available for sale by contractual maturity	'	'
Investment securities available for sale, amortized cost	18	'
Investment securities available for sale, fair value	$73	'

Investment_securities_HTM_Cont

Investment securities HTM Contractual Maturity Table (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Amortized cost and fair values of investment securities held to maturity	'	'
Securities held to maturity, debt securities due in one year or less, amortized cost	$0	'
Securities held to maturity, debt securities due after one year through five years, amortized cost	765	'
Securities held to maturity, debt securities due after five years through ten years, amortized cost	105,931	'
Securities held to maturity, debt securities due after ten years, amortized cost	195,245	'
Total held to maturity debt securities, amortized Cost	301,941	175,210
Securities held to maturity, debt securities due in one year or less, fair value	0	'
Securities held to maturity, debt securities due in one year through five years, fair value	774	'
Securities held to maturity, debt securities due after five years through ten years, fair value	106,998	'
Securities held to maturity, debt securities due after ten years, fair value	200,110	'
Investment securities held to maturity, fair value	$307,882	$169,889
Ratio of Fair Value to Amortized Cost, HTM	102.00%	'

Investment_Securities_AFS_Gros

Investment Securities AFS Gross Unrealized Losses (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Unrealized losses and fair value of available for sale securities , by investment category and time length	'	'
Unrealized losses on available for sale securities, less than 12 months	($3,404)	($82,852)
Unrealized losses on available for sale securities, 12 months or more	-68,091	-25,182
Total unrealized losses on available for sale securities	-71,495	-108,034
Fair value of unrealized losses on available for sale securities, less than 12 months	699,084	2,386,847
Fair value of unrealized losses on available for sale securities, 12 months or more	1,786,065	467,340
Total fair value of unrealized losses on available for sale securities	2,485,149	2,854,187
US Treasury Securities [Member]	'	'
Unrealized losses and fair value of available for sale securities , by investment category and time length	'	'
Unrealized losses on available for sale securities, less than 12 months	-3	'
Unrealized losses on available for sale securities, 12 months or more	0	'
Total unrealized losses on available for sale securities	-3	'
Fair value of unrealized losses on available for sale securities, less than 12 months	996	'
Fair value of unrealized losses on available for sale securities, 12 months or more	0	'
Total fair value of unrealized losses on available for sale securities	996	'
Number of available for sale securities in a continuous unrealized loss position less than twelve months	1	'
Number of available for sale securities in a continuous unrealized loss position for twelve months or more	0	'
Obligations of state and political subdivisions (municipal securities) [Member]	'	'
Unrealized losses and fair value of available for sale securities , by investment category and time length	'	'
Unrealized losses on available for sale securities, less than 12 months	-1	-1,525
Unrealized losses on available for sale securities, 12 months or more	-47	-8
Total unrealized losses on available for sale securities	-48	-1,533
Fair value of unrealized losses on available for sale securities, less than 12 months	1,799	47,044
Fair value of unrealized losses on available for sale securities, 12 months or more	5,647	273
Total fair value of unrealized losses on available for sale securities	7,446	47,317
Number of available for sale securities in a continuous unrealized loss position less than twelve months	5	113
Number of available for sale securities in a continuous unrealized loss position for twelve months or more	13	1
Government-Sponsored Enterprise (GSE) [Member]	'	'
Unrealized losses and fair value of available for sale securities , by investment category and time length	'	'
Unrealized losses on available for sale securities, less than 12 months	-1,472	-57,393
Unrealized losses on available for sale securities, 12 months or more	-41,753	-21,186
Total unrealized losses on available for sale securities	-43,225	-78,579
Fair value of unrealized losses on available for sale securities, less than 12 months	331,085	1,887,784
Fair value of unrealized losses on available for sale securities, 12 months or more	1,389,945	421,082
Total fair value of unrealized losses on available for sale securities	1,721,030	2,308,866
Number of available for sale securities in a continuous unrealized loss position less than twelve months	30	106
Number of available for sale securities in a continuous unrealized loss position for twelve months or more	64	15
Private Label [Member]	'	'
Unrealized losses and fair value of available for sale securities , by investment category and time length	'	'
Unrealized losses on available for sale securities, less than 12 months	-1	-37
Unrealized losses on available for sale securities, 12 months or more	-1	0
Total unrealized losses on available for sale securities	-2	-37
Fair value of unrealized losses on available for sale securities, less than 12 months	1,889	2,105
Fair value of unrealized losses on available for sale securities, 12 months or more	30	35
Total fair value of unrealized losses on available for sale securities	1,919	2,140
Number of available for sale securities in a continuous unrealized loss position less than twelve months	1	2
Number of available for sale securities in a continuous unrealized loss position for twelve months or more	2	1
GNMA commercial mortgage-related securities [Member]	'	'
Unrealized losses and fair value of available for sale securities , by investment category and time length	'	'
Unrealized losses on available for sale securities, less than 12 months	-1,927	-23,854
Unrealized losses on available for sale securities, 12 months or more	-26,290	-3,988
Total unrealized losses on available for sale securities	-28,217	-27,842
Fair value of unrealized losses on available for sale securities, less than 12 months	363,315	443,462
Fair value of unrealized losses on available for sale securities, 12 months or more	390,443	45,950
Total fair value of unrealized losses on available for sale securities	753,758	489,412
Number of available for sale securities in a continuous unrealized loss position less than twelve months	12	19
Number of available for sale securities in a continuous unrealized loss position for twelve months or more	15	1
Asset-backed Securities [Member]	'	'
Unrealized losses and fair value of available for sale securities , by investment category and time length	'	'
Unrealized losses on available for sale securities, less than 12 months	0	'
Unrealized losses on available for sale securities, 12 months or more	0	'
Total unrealized losses on available for sale securities	0	'
Fair value of unrealized losses on available for sale securities, less than 12 months	0	'
Fair value of unrealized losses on available for sale securities, 12 months or more	0	'
Total fair value of unrealized losses on available for sale securities	0	'
Number of available for sale securities in a continuous unrealized loss position less than twelve months	0	'
Number of available for sale securities in a continuous unrealized loss position for twelve months or more	0	'
Other Debt And Other Equity Securities [Member]	'	'
Unrealized losses and fair value of available for sale securities , by investment category and time length	'	'
Unrealized losses on available for sale securities, less than 12 months	0	-43
Unrealized losses on available for sale securities, 12 months or more	0	0
Total unrealized losses on available for sale securities	0	-43
Fair value of unrealized losses on available for sale securities, less than 12 months	0	6,452
Fair value of unrealized losses on available for sale securities, 12 months or more	0	0
Total fair value of unrealized losses on available for sale securities	$0	$6,452
Number of available for sale securities in a continuous unrealized loss position less than twelve months	0	5
Number of available for sale securities in a continuous unrealized loss position for twelve months or more	0	0

Investment_Securities_HTM_Gros

Investment Securities HTM Gross Unrealized Losses (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
HeldToMaturitySecuritiesContinuousUnrealizedLossPositionAbstract	'	'
Unrealized losses on held to maturity securities, less than 12 months	($55)	($5,339)
Unrealized losses on held to maturity securities, 12 months or more	-879	-383
Total unrealized losses on held to maturity securities	-934	-5,722
Fair value of unrealized losses on held to maturity securities, less than 12 months	14,443	124,435
Fair value of unrealized losses on held to maturity securities, 12 months or more	55,522	5,010
Total fair value of unrealized losses on held to maturity securities	69,965	129,445
Obligations of state and political subdivisions (municipal securities) [Member]	'	'
HeldToMaturitySecuritiesContinuousUnrealizedLossPositionAbstract	'	'
Unrealized losses on held to maturity securities, less than 12 months	-55	-5,339
Unrealized losses on held to maturity securities, 12 months or more	-879	-383
Total unrealized losses on held to maturity securities	-934	-5,722
Fair value of unrealized losses on held to maturity securities, less than 12 months	14,443	124,435
Fair value of unrealized losses on held to maturity securities, 12 months or more	55,522	5,010
Total fair value of unrealized losses on held to maturity securities	$69,965	$129,445
Obligations of state and political subdivisions (municipal securities) [Member] | Held To Maturity Securities In Unrealized Loss Positions Qualitative Disclosure Number Of Positions Less Than One Year [Member]	'	'
HeldToMaturitySecuritiesContinuousUnrealizedLossPositionAbstract	'	'
Number of held to maturity securities in a continuous unrealized loss position less than twelve months	39	298
Obligations of state and political subdivisions (municipal securities) [Member] | Held To Maturity Securities In Unrealized Loss Positions Qualitative Disclosure Number Of Positions Greater Than Or Equal To One Year [Member]	'	'
HeldToMaturitySecuritiesContinuousUnrealizedLossPositionAbstract	'	'
Number of held to maturity securities in a continuous unrealized loss position less than twelve months	119	10

Investment_Securities_OTTI_Cre

Investment Securities OTTI Credit Losses (Details) (USD $)	9 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013	Dec. 31, 2012
Credit loss portion of other than temporary impairment	'	'	'
Credit-related other-than-temporary impairment	$0	($6,279)	($6,868)
Reduction due to credit impaired securities sold or abandoned	6,279	589	'
Collateralized Mortgage Backed Securities [Member]	'	'	'
Credit loss portion of other than temporary impairment	'	'	'
Credit-related other-than-temporary impairment	0	0	-532
Reduction due to credit impaired securities sold or abandoned	0	532	'
Trust Preferred Debt Securities [Member]	'	'	'
Credit loss portion of other than temporary impairment	'	'	'
Credit-related other-than-temporary impairment	0	-6,279	-6,336
Reduction due to credit impaired securities sold or abandoned	$6,279	$57	'

Investment_Securities_Details_

Investment Securities (Details Textuals) (USD $)	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Investment Securities (Textuals) [Abstract]	'	'	'
Federal Home Loan Bank Stock	$118,000,000	'	$110,000,000
Federal Reserve Bank Stock	71,000,000	'	71,000,000
FHLB stock	-7,626,000	-28,520,000	'
Sale of FHLB stock	$0	$14,399,000	'

Loans_Allowance_for_Loan_Losse2

Loans, Allowance for Loan Losses, and Credit Quality Loan Composition (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Loan composition	'	'
Commercial and industrial	$5,603,899	$4,822,680
Commercial real estate - owner occupied	1,014,335	1,114,715
Lease financing	52,600	55,483
Commercial and business lending	6,670,834	5,992,878
Commercial real estate - investor	3,043,361	2,939,456
Real estate construction	982,426	896,248
Commercial real estate lending	4,025,787	3,835,704
Total commercial	10,696,621	9,828,582
Home equity	1,676,525	1,825,014
Installment and Credit Cards	459,682	407,074
Residential mortgage	4,326,262	3,835,591
Total consumer	6,462,469	6,067,679
Total loans	$17,159,090	$15,896,261

Loans_Allowance_for_Loan_Losse3

Loans, Allowance for Loan Losses, and Credit Quality Changes in the Allowance for Loan Losses (Details) (USD $)	9 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Changes in the allowance for loan losses	'	'
Loans and Leases Receivable, Allowance, Beginning Balance	$268,315	$297,409
Provision for loan losses	8,500	10,000
Charge offs	-35,318	-88,061
Recoveries	24,765	48,967
Net charge offs	-10,553	-39,094
Loans and Leases Receivable, Allowance, Ending Balance	266,262	268,315
Changes in the allowance for unfunded commitments	'	'
Allowance for Credit Losses	290,662	290,215
Reserve for Off-balance Sheet Activities [Member]	'	'
Changes in the allowance for unfunded commitments	'	'
Balance at beginning of period	21,900	21,800
Provision for unfunded commitments	2,500	100
Balance at end of period	$24,400	$21,900

Loans_Allowance_for_Loan_Losse4

Loans, Allowance for Loan Losses, and Credit Quality Changes in the Allowance for Loan Losses by Portfolio Segment (Details) (USD $)	9 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Changes in the allowance for loan losses by portfolio segment	'	'
Loans and Leases Receivable, Allowance, Beginning Balance	$268,315	$297,409
Provision for loan losses	8,500	10,000
Charge offs	-35,318	-88,061
Recoveries	24,765	48,967
Loans and Leases Receivable, Allowance, Ending Balance	266,262	268,315
Allowance for loan losses:	'	'
Ending balance impaired loans individually evaluated for impairment	19,981	13,637
Ending balance impaired loans collectively evaluated for impairment	33,770	38,238
Total Impaired Loans, Related Allowance	53,751	51,875
Ending balance all other loans collectively evaluated for impairment	212,511	216,440
Loans and Leases Receivable, Allowance, Total	266,262	268,315
Loans [Abstract]	'	'
Ending balance impaired loans individually evaluated for impairment	103,752	101,686
Ending balance impaired loans collectively evaluated for impairment	184,989	207,727
Total Impaired Loans, Recorded Investment	288,741	309,413
Ending balance all other loans collectively evaluated for impairment	16,870,349	15,586,848
Total loans	17,159,090	15,896,261
Commercial and Industrial Portfolio Segment [Member]	'	'
Changes in the allowance for loan losses by portfolio segment	'	'
Loans and Leases Receivable, Allowance, Beginning Balance	104,501	97,852
Provision for loan losses	18,700	12,930
Charge offs	-11,421	-35,146
Recoveries	9,501	28,865
Loans and Leases Receivable, Allowance, Ending Balance	121,281	104,501
Allowance for loan losses:	'	'
Ending balance impaired loans individually evaluated for impairment	14,006	7,994
Ending balance impaired loans collectively evaluated for impairment	3,590	3,923
Total Impaired Loans, Related Allowance	17,596	11,917
Ending balance all other loans collectively evaluated for impairment	103,685	92,584
Loans and Leases Receivable, Allowance, Total	121,281	104,501
Loans [Abstract]	'	'
Ending balance impaired loans individually evaluated for impairment	45,242	29,343
Ending balance impaired loans collectively evaluated for impairment	42,856	40,893
Total Impaired Loans, Recorded Investment	88,098	70,236
Ending balance all other loans collectively evaluated for impairment	5,515,801	4,752,444
Total loans	5,603,899	4,822,680
Commercial Real Estate Owner Occupied Portfolio [Member]	'	'
Changes in the allowance for loan losses by portfolio segment	'	'
Loans and Leases Receivable, Allowance, Beginning Balance	19,476	27,389
Provision for loan losses	1,098	-1,778
Charge offs	-2,963	-6,474
Recoveries	1,427	339
Loans and Leases Receivable, Allowance, Ending Balance	19,038	19,476
Allowance for loan losses:	'	'
Ending balance impaired loans individually evaluated for impairment	1,672	1,019
Ending balance impaired loans collectively evaluated for impairment	2,404	1,936
Total Impaired Loans, Related Allowance	4,076	2,955
Ending balance all other loans collectively evaluated for impairment	14,962	16,521
Loans and Leases Receivable, Allowance, Total	19,038	19,476
Loans [Abstract]	'	'
Ending balance impaired loans individually evaluated for impairment	17,927	24,744
Ending balance impaired loans collectively evaluated for impairment	17,987	17,929
Total Impaired Loans, Recorded Investment	35,914	42,673
Ending balance all other loans collectively evaluated for impairment	978,421	1,072,042
Total loans	1,014,335	1,114,715
Finance Leases Portfolio Segment [Member]	'	'
Changes in the allowance for loan losses by portfolio segment	'	'
Loans and Leases Receivable, Allowance, Beginning Balance	1,607	3,024
Provision for loan losses	777	-1,429
Charge offs	-29	-206
Recoveries	6	218
Loans and Leases Receivable, Allowance, Ending Balance	2,361	1,607
Allowance for loan losses:	'	'
Ending balance impaired loans individually evaluated for impairment	735	0
Ending balance impaired loans collectively evaluated for impairment	4	29
Total Impaired Loans, Related Allowance	739	29
Ending balance all other loans collectively evaluated for impairment	1,622	1,578
Loans and Leases Receivable, Allowance, Total	2,361	1,607
Loans [Abstract]	'	'
Ending balance impaired loans individually evaluated for impairment	1,938	0
Ending balance impaired loans collectively evaluated for impairment	9	69
Total Impaired Loans, Recorded Investment	1,947	69
Ending balance all other loans collectively evaluated for impairment	50,653	55,414
Total loans	52,600	55,483
Commercial Real Estate Investor Portfolio Segment [Member]	'	'
Changes in the allowance for loan losses by portfolio segment	'	'
Loans and Leases Receivable, Allowance, Beginning Balance	58,156	63,181
Provision for loan losses	-14,292	-2,140
Charge offs	-4,358	-9,846
Recoveries	9,693	6,961
Loans and Leases Receivable, Allowance, Ending Balance	49,199	58,156
Allowance for loan losses:	'	'
Ending balance impaired loans individually evaluated for impairment	1,829	3,932
Ending balance impaired loans collectively evaluated for impairment	2,429	3,963
Total Impaired Loans, Related Allowance	4,258	7,895
Ending balance all other loans collectively evaluated for impairment	44,941	50,261
Loans and Leases Receivable, Allowance, Total	49,199	58,156
Loans [Abstract]	'	'
Ending balance impaired loans individually evaluated for impairment	21,204	32,367
Ending balance impaired loans collectively evaluated for impairment	28,342	50,175
Total Impaired Loans, Recorded Investment	49,546	82,542
Ending balance all other loans collectively evaluated for impairment	2,993,815	2,856,914
Total loans	3,043,361	2,939,456
Real Estate Construction Port Folio Segment [Member]	'	'
Changes in the allowance for loan losses by portfolio segment	'	'
Loans and Leases Receivable, Allowance, Beginning Balance	23,418	20,741
Provision for loan losses	-3,831	541
Charge offs	-1,761	-3,375
Recoveries	503	5,511
Loans and Leases Receivable, Allowance, Ending Balance	18,329	23,418
Allowance for loan losses:	'	'
Ending balance impaired loans individually evaluated for impairment	1,140	254
Ending balance impaired loans collectively evaluated for impairment	1,021	2,162
Total Impaired Loans, Related Allowance	2,161	2,416
Ending balance all other loans collectively evaluated for impairment	16,168	21,002
Loans and Leases Receivable, Allowance, Total	18,329	23,418
Loans [Abstract]	'	'
Ending balance impaired loans individually evaluated for impairment	6,026	3,777
Ending balance impaired loans collectively evaluated for impairment	2,966	6,483
Total Impaired Loans, Recorded Investment	8,992	10,260
Ending balance all other loans collectively evaluated for impairment	973,434	885,988
Total loans	982,426	896,248
Home Equity Port Folio Segments [Member]	'	'
Changes in the allowance for loan losses by portfolio segment	'	'
Loans and Leases Receivable, Allowance, Beginning Balance	32,196	56,826
Provision for loan losses	1,278	-8,213
Charge offs	-9,713	-20,629
Recoveries	2,546	4,212
Loans and Leases Receivable, Allowance, Ending Balance	26,307	32,196
Allowance for loan losses:	'	'
Ending balance impaired loans individually evaluated for impairment	11	123
Ending balance impaired loans collectively evaluated for impairment	12,480	13,866
Total Impaired Loans, Related Allowance	12,491	13,989
Ending balance all other loans collectively evaluated for impairment	13,816	18,207
Loans and Leases Receivable, Allowance, Total	26,307	32,196
Loans [Abstract]	'	'
Ending balance impaired loans individually evaluated for impairment	1,025	929
Ending balance impaired loans collectively evaluated for impairment	30,818	33,871
Total Impaired Loans, Recorded Investment	31,843	34,800
Ending balance all other loans collectively evaluated for impairment	1,644,682	1,790,214
Total loans	1,676,525	1,825,014
Installment and Credit Cards Portfolio Segment [Member]	'	'
Changes in the allowance for loan losses by portfolio segment	'	'
Loans and Leases Receivable, Allowance, Beginning Balance	2,416	4,299
Provision for loan losses	3,486	-2,127
Charge offs	-1,751	-1,389
Recoveries	481	1,633
Loans and Leases Receivable, Allowance, Ending Balance	4,632	2,416
Allowance for loan losses:	'	'
Ending balance impaired loans individually evaluated for impairment	0	0
Ending balance impaired loans collectively evaluated for impairment	339	487
Total Impaired Loans, Related Allowance	339	487
Ending balance all other loans collectively evaluated for impairment	4,293	1,929
Loans and Leases Receivable, Allowance, Total	4,632	2,416
Loans [Abstract]	'	'
Ending balance impaired loans individually evaluated for impairment	0	0
Ending balance impaired loans collectively evaluated for impairment	1,759	1,360
Total Impaired Loans, Recorded Investment	1,759	1,360
Ending balance all other loans collectively evaluated for impairment	457,923	405,714
Total loans	459,682	407,074
Residential Portfolio Segment [Member]	'	'
Changes in the allowance for loan losses by portfolio segment	'	'
Loans and Leases Receivable, Allowance, Beginning Balance	26,545	24,097
Provision for loan losses	1,284	12,216
Charge offs	-3,322	-10,996
Recoveries	608	1,228
Loans and Leases Receivable, Allowance, Ending Balance	25,115	26,545
Allowance for loan losses:	'	'
Ending balance impaired loans individually evaluated for impairment	588	315
Ending balance impaired loans collectively evaluated for impairment	11,503	11,872
Total Impaired Loans, Related Allowance	12,091	12,187
Ending balance all other loans collectively evaluated for impairment	13,024	14,358
Loans and Leases Receivable, Allowance, Total	25,115	26,545
Loans [Abstract]	'	'
Ending balance impaired loans individually evaluated for impairment	10,390	10,526
Ending balance impaired loans collectively evaluated for impairment	60,252	56,947
Total Impaired Loans, Recorded Investment	70,642	67,473
Ending balance all other loans collectively evaluated for impairment	4,255,620	3,768,118
Total loans	$4,326,262	$3,835,591

Loans_Allowance_for_Loan_Losse5

Loans, Allowance for Loan Losses, and Credit Quality Commercial Loans by Credit Quality Indicator (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Commercial loans by credit quality indicator	'	'
Commercial and industrial	$5,603,899	$4,822,680
Commercial real estate - owner occupied	1,014,335	1,114,715
Lease financing	52,600	55,483
Commercial and business lending	6,670,834	5,992,878
Commercial real estate - investor	3,043,361	2,939,456
Real estate construction	982,426	896,248
Commercial real estate lending	4,025,787	3,835,704
Total commercial	10,696,621	9,828,582
Pass [Member]	'	'
Commercial loans by credit quality indicator	'	'
Commercial and industrial	5,268,521	4,485,160
Commercial real estate - owner occupied	900,306	959,849
Lease financing	45,506	52,733
Commercial and business lending	6,214,333	5,497,742
Commercial real estate - investor	2,930,817	2,740,255
Real estate construction	967,914	877,911
Commercial real estate lending	3,898,731	3,618,166
Total commercial	10,113,064	9,115,908
Special Mention [Member]	'	'
Commercial loans by credit quality indicator	'	'
Commercial and industrial	113,864	153,615
Commercial real estate - owner occupied	29,107	55,404
Lease financing	1,360	897
Commercial and business lending	144,331	209,916
Commercial real estate - investor	34,524	64,230
Real estate construction	3,293	2,814
Commercial real estate lending	37,817	67,044
Total commercial	182,148	276,960
Potential Problem [Member]	'	'
Commercial loans by credit quality indicator	'	'
Commercial and industrial	133,416	113,669
Commercial real estate - owner occupied	49,008	56,789
Lease financing	3,787	1,784
Commercial and business lending	186,211	172,242
Commercial real estate - investor	28,474	52,429
Real estate construction	2,227	5,263
Commercial real estate lending	30,701	57,692
Total commercial	216,912	229,934
Impaired [Member]	'	'
Commercial loans by credit quality indicator	'	'
Commercial and industrial	88,098	70,236
Commercial real estate - owner occupied	35,914	42,673
Lease financing	1,947	69
Commercial and business lending	125,959	112,978
Commercial real estate - investor	49,546	82,542
Real estate construction	8,992	10,260
Commercial real estate lending	58,538	92,802
Total commercial	$184,497	$205,780

Loans_Allowance_for_Loan_Losse6

Loans, Allowance for Loan Losses, and Credit Quality Consumer Loans by Credit Quality Indicator (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Consumer Loans By Credit Quality Indicator [Abstract]	'	'
Home equity	$1,676,525	$1,825,014
Installment and Credit Cards	459,682	407,074
Residential mortgage	4,326,262	3,835,591
Total consumer	6,462,469	6,067,679
Performing Financing Receivable [Member]	'	'
Consumer Loans By Credit Quality Indicator [Abstract]	'	'
Home equity	1,633,033	1,777,421
Installment and Credit Cards	456,101	404,514
Residential mortgage	4,250,223	3,758,688
Total consumer	6,339,357	5,940,623
Thirty To Eighty Nine Days Past Due [Member]	'	'
Consumer Loans By Credit Quality Indicator [Abstract]	'	'
Home equity	10,738	10,680
Installment and Credit Cards	1,818	1,150
Residential mortgage	3,231	6,118
Total consumer	15,787	17,948
Potential Problem [Member]	'	'
Consumer Loans By Credit Quality Indicator [Abstract]	'	'
Home equity	911	2,113
Installment and Credit Cards	4	50
Residential mortgage	2,166	3,312
Total consumer	3,081	5,475
Impaired [Member]	'	'
Consumer Loans By Credit Quality Indicator [Abstract]	'	'
Home equity	31,843	34,800
Installment and Credit Cards	1,759	1,360
Residential mortgage	70,642	67,473
Total consumer	$104,244	$103,633

Loans_Allowance_for_Loan_Losse7

Loans, Allowance for Loan Losses, and Credit Quality Loans by Past Due Status (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Summarized details of Loans	'	'
30-59 Days Past Due	$39,567	$43,388
60-89 Days Past Due	14,751	33,281
90 Days or More Past Due	62,373	86,863
Total Past Due	116,691	163,532
Current	17,042,399	15,732,729
Total loans	17,159,090	15,896,261
Percent of current nonaccrual loans	59.00%	42.00%
Commercial And Industrial Financing Receivable [Member]	'	'
Summarized details of Loans	'	'
30-59 Days Past Due	4,096	4,388
60-89 Days Past Due	3,166	5,200
90 Days or More Past Due	7,902	10,964
Total Past Due	15,164	20,552
Current	5,588,735	4,802,128
Total loans	5,603,899	4,822,680
Commercial Real Estate Owner Occupied Portfolio [Member]	'	'
Summarized details of Loans	'	'
30-59 Days Past Due	1,453	3,497
60-89 Days Past Due	2,233	3,815
90 Days or More Past Due	10,159	11,125
Total Past Due	13,845	18,437
Current	1,000,490	1,096,278
Total loans	1,014,335	1,114,715
Finance Leases Financing Receivable [Member]	'	'
Summarized details of Loans	'	'
30-59 Days Past Due	0	0
60-89 Days Past Due	0	0
90 Days or More Past Due	550	69
Total Past Due	550	69
Current	52,050	55,414
Total loans	52,600	55,483
Commercial And Business Lending [Member]	'	'
Summarized details of Loans	'	'
30-59 Days Past Due	5,549	7,885
60-89 Days Past Due	5,399	9,015
90 Days or More Past Due	18,611	22,158
Total Past Due	29,559	39,058
Current	6,641,275	5,953,820
Total loans	6,670,834	5,992,878
Commercial Real Estate Investor Portfolio Segment [Member]	'	'
Summarized details of Loans	'	'
30-59 Days Past Due	16,009	12,489
60-89 Days Past Due	685	15,033
90 Days or More Past Due	8,418	20,466
Total Past Due	25,112	47,988
Current	3,018,249	2,891,468
Total loans	3,043,361	2,939,456
Commercial Real Estate Construction Financing Receivable [Member]	'	'
Summarized details of Loans	'	'
30-59 Days Past Due	363	3,212
60-89 Days Past Due	156	1,118
90 Days or More Past Due	1,061	2,267
Total Past Due	1,580	6,597
Current	980,846	889,651
Total loans	982,426	896,248
Commercial Real Estate Lending [Member]	'	'
Summarized details of Loans	'	'
30-59 Days Past Due	16,372	15,701
60-89 Days Past Due	841	16,151
90 Days or More Past Due	9,479	22,733
Total Past Due	26,692	54,585
Current	3,999,095	3,781,119
Total loans	4,025,787	3,835,704
Commercial Financing Receivable [Member]	'	'
Summarized details of Loans	'	'
30-59 Days Past Due	21,921	23,586
60-89 Days Past Due	6,240	25,166
90 Days or More Past Due	28,090	44,891
Total Past Due	56,251	93,643
Current	10,640,370	9,734,939
Total loans	10,696,621	9,828,582
Home Equity [Member]	'	'
Summarized details of Loans	'	'
30-59 Days Past Due	9,605	10,336
60-89 Days Past Due	4,806	3,704
90 Days or More Past Due	10,607	14,677
Total Past Due	25,018	28,717
Current	1,651,507	1,796,297
Total loans	1,676,525	1,825,014
Installment and Credit Cards [Member]	'	'
Summarized details of Loans	'	'
30-59 Days Past Due	1,163	1,014
60-89 Days Past Due	761	289
90 Days or More Past Due	1,507	926
Total Past Due	3,431	2,229
Current	456,251	404,845
Total loans	459,682	407,074
Residential, Prime, Financing Receivable [Member]	'	'
Summarized details of Loans	'	'
30-59 Days Past Due	6,878	8,452
60-89 Days Past Due	2,944	4,122
90 Days or More Past Due	22,169	26,369
Total Past Due	31,991	38,943
Current	4,294,271	3,796,648
Total loans	4,326,262	3,835,591
Consumer Loan [Member]	'	'
Summarized details of Loans	'	'
30-59 Days Past Due	17,646	19,802
60-89 Days Past Due	8,511	8,115
90 Days or More Past Due	34,283	41,972
Total Past Due	60,440	69,889
Current	6,402,029	5,997,790
Total loans	6,462,469	6,067,679
Accruing Loans [Member]	'	'
Summarized details of Loans	'	'
30-59 Days Past Due	31,276	29,071
60-89 Days Past Due	7,401	23,978
90 Days or More Past Due	1,690	2,350
Total Past Due	40,367	55,399
Current	16,934,585	15,655,434
Total loans	16,974,952	15,710,833
Accruing Loans [Member] | Commercial And Industrial Financing Receivable [Member]	'	'
Summarized details of Loans	'	'
30-59 Days Past Due	2,035	3,390
60-89 Days Past Due	1,912	3,436
90 Days or More Past Due	269	1,199
Total Past Due	4,216	8,025
Current	5,548,540	4,776,936
Total loans	5,552,756	4,784,961
Accruing Loans [Member] | Commercial Real Estate Owner Occupied Portfolio [Member]	'	'
Summarized details of Loans	'	'
30-59 Days Past Due	1,024	1,015
60-89 Days Past Due	1,651	2,091
90 Days or More Past Due	0	0
Total Past Due	2,675	3,106
Current	987,320	1,081,945
Total loans	989,995	1,085,051
Accruing Loans [Member] | Finance Leases Financing Receivable [Member]	'	'
Summarized details of Loans	'	'
30-59 Days Past Due	0	0
60-89 Days Past Due	0	0
90 Days or More Past Due	0	0
Total Past Due	0	0
Current	50,653	55,414
Total loans	50,653	55,414
Accruing Loans [Member] | Commercial And Business Lending [Member]	'	'
Summarized details of Loans	'	'
30-59 Days Past Due	3,059	4,405
60-89 Days Past Due	3,563	5,527
90 Days or More Past Due	269	1,199
Total Past Due	6,891	11,131
Current	6,586,513	5,914,295
Total loans	6,593,404	5,925,426
Accruing Loans [Member] | Commercial Real Estate Investor Portfolio Segment [Member]	'	'
Summarized details of Loans	'	'
30-59 Days Past Due	15,869	9,081
60-89 Days Past Due	0	14,134
90 Days or More Past Due	0	0
Total Past Due	15,869	23,215
Current	3,002,386	2,878,645
Total loans	3,018,255	2,901,860
Accruing Loans [Member] | Commercial Real Estate Construction Financing Receivable [Member]	'	'
Summarized details of Loans	'	'
30-59 Days Past Due	299	836
60-89 Days Past Due	100	1,118
90 Days or More Past Due	0	0
Total Past Due	399	1,954
Current	973,840	887,827
Total loans	974,239	889,781
Accruing Loans [Member] | Commercial Real Estate Lending [Member]	'	'
Summarized details of Loans	'	'
30-59 Days Past Due	16,168	9,917
60-89 Days Past Due	100	15,252
90 Days or More Past Due	0	0
Total Past Due	16,268	25,169
Current	3,976,226	3,766,472
Total loans	3,992,494	3,791,641
Accruing Loans [Member] | Commercial Financing Receivable [Member]	'	'
Summarized details of Loans	'	'
30-59 Days Past Due	19,227	14,322
60-89 Days Past Due	3,663	20,779
90 Days or More Past Due	269	1,199
Total Past Due	23,159	36,300
Current	10,562,739	9,680,767
Total loans	10,585,898	9,717,067
Accruing Loans [Member] | Home Equity [Member]	'	'
Summarized details of Loans	'	'
30-59 Days Past Due	7,999	8,611
60-89 Days Past Due	2,739	2,069
90 Days or More Past Due	0	346
Total Past Due	10,738	11,026
Current	1,644,526	1,788,821
Total loans	1,655,264	1,799,847
Accruing Loans [Member] | Installment and Credit Cards [Member]	'	'
Summarized details of Loans	'	'
30-59 Days Past Due	1,106	885
60-89 Days Past Due	712	265
90 Days or More Past Due	1,369	637
Total Past Due	3,187	1,787
Current	455,842	404,173
Total loans	459,029	405,960
Accruing Loans [Member] | Residential, Prime, Financing Receivable [Member]	'	'
Summarized details of Loans	'	'
30-59 Days Past Due	2,944	5,253
60-89 Days Past Due	287	865
90 Days or More Past Due	52	168
Total Past Due	3,283	6,286
Current	4,271,478	3,781,673
Total loans	4,274,761	3,787,959
Accruing Loans [Member] | Consumer Loan [Member]	'	'
Summarized details of Loans	'	'
30-59 Days Past Due	12,049	14,749
60-89 Days Past Due	3,738	3,199
90 Days or More Past Due	1,421	1,151
Total Past Due	17,208	19,099
Current	6,371,846	5,974,667
Total loans	6,389,054	5,993,766
Nonaccrual Loan [Member]	'	'
Summarized details of Loans	'	'
30-59 Days Past Due	8,291	14,317
60-89 Days Past Due	7,350	9,303
90 Days or More Past Due	60,683	84,513
Total Past Due	76,324	108,133
Current	107,814	77,295
Total loans	184,138	185,428
Nonaccrual Loan [Member] | Commercial And Industrial Financing Receivable [Member]	'	'
Summarized details of Loans	'	'
30-59 Days Past Due	2,061	998
60-89 Days Past Due	1,254	1,764
90 Days or More Past Due	7,633	9,765
Total Past Due	10,948	12,527
Current	40,195	25,192
Total loans	51,143	37,719
Nonaccrual Loan [Member] | Commercial Real Estate Owner Occupied Portfolio [Member]	'	'
Summarized details of Loans	'	'
30-59 Days Past Due	429	2,482
60-89 Days Past Due	582	1,724
90 Days or More Past Due	10,159	11,125
Total Past Due	11,170	15,331
Current	13,170	14,333
Total loans	24,340	29,664
Nonaccrual Loan [Member] | Finance Leases Financing Receivable [Member]	'	'
Summarized details of Loans	'	'
30-59 Days Past Due	0	0
60-89 Days Past Due	0	0
90 Days or More Past Due	550	69
Total Past Due	550	69
Current	1,397	0
Total loans	1,947	69
Nonaccrual Loan [Member] | Commercial And Business Lending [Member]	'	'
Summarized details of Loans	'	'
30-59 Days Past Due	2,490	3,480
60-89 Days Past Due	1,836	3,488
90 Days or More Past Due	18,342	20,959
Total Past Due	22,668	27,927
Current	54,762	39,525
Total loans	77,430	67,452
Nonaccrual Loan [Member] | Commercial Real Estate Investor Portfolio Segment [Member]	'	'
Summarized details of Loans	'	'
30-59 Days Past Due	140	3,408
60-89 Days Past Due	685	899
90 Days or More Past Due	8,418	20,466
Total Past Due	9,243	24,773
Current	15,863	12,823
Total loans	25,106	37,596
Nonaccrual Loan [Member] | Commercial Real Estate Construction Financing Receivable [Member]	'	'
Summarized details of Loans	'	'
30-59 Days Past Due	64	2,376
60-89 Days Past Due	56	0
90 Days or More Past Due	1,061	2,267
Total Past Due	1,181	4,643
Current	7,006	1,824
Total loans	8,187	6,467
Nonaccrual Loan [Member] | Commercial Real Estate Lending [Member]	'	'
Summarized details of Loans	'	'
30-59 Days Past Due	204	5,784
60-89 Days Past Due	741	899
90 Days or More Past Due	9,479	22,733
Total Past Due	10,424	29,416
Current	22,869	14,647
Total loans	33,293	44,063
Nonaccrual Loan [Member] | Commercial Financing Receivable [Member]	'	'
Summarized details of Loans	'	'
30-59 Days Past Due	2,694	9,264
60-89 Days Past Due	2,577	4,387
90 Days or More Past Due	27,821	43,692
Total Past Due	33,092	57,343
Current	77,631	54,172
Total loans	110,723	111,515
Nonaccrual Loan [Member] | Home Equity [Member]	'	'
Summarized details of Loans	'	'
30-59 Days Past Due	1,606	1,725
60-89 Days Past Due	2,067	1,635
90 Days or More Past Due	10,607	14,331
Total Past Due	14,280	17,691
Current	6,981	7,476
Total loans	21,261	25,167
Nonaccrual Loan [Member] | Installment and Credit Cards [Member]	'	'
Summarized details of Loans	'	'
30-59 Days Past Due	57	129
60-89 Days Past Due	49	24
90 Days or More Past Due	138	289
Total Past Due	244	442
Current	409	672
Total loans	653	1,114
Nonaccrual Loan [Member] | Residential, Prime, Financing Receivable [Member]	'	'
Summarized details of Loans	'	'
30-59 Days Past Due	3,934	3,199
60-89 Days Past Due	2,657	3,257
90 Days or More Past Due	22,117	26,201
Total Past Due	28,708	32,657
Current	22,793	14,975
Total loans	51,501	47,632
Nonaccrual Loan [Member] | Consumer Loan [Member]	'	'
Summarized details of Loans	'	'
30-59 Days Past Due	5,597	5,053
60-89 Days Past Due	4,773	4,916
90 Days or More Past Due	32,862	40,821
Total Past Due	43,232	50,790
Current	30,183	23,123
Total loans	$73,415	$73,913

Loans_Allowance_for_Loan_Losse8

Loans, Allowance for Loan Losses, and Credit Quality Impaired Loans Recorded Investment, Unpaid Principal Balance, Related Allowance, Average Recorded Investment, and Interest Income Recognized (Details) (USD $)	9 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Summarize of nonaccrual loans, accruing loans past due 90 days or more, and restructured loans	'	'
Recorded Investment	$288,741	$309,413
Unpaid Principal Balance	325,890	361,694
Related Allowance	53,751	51,875
YTD Average Recorded Investment	300,635	328,022
YTD Interest Income Recognized	7,285	10,137
Fair Value Mark	72.00%	71.00%
Loans With Related Allowance [Member]	'	'
Summarize of nonaccrual loans, accruing loans past due 90 days or more, and restructured loans	'	'
Recorded Investment	239,621	250,263
Unpaid Principal Balance	259,887	283,066
Related Allowance	53,751	51,875
YTD Average Recorded Investment	245,572	264,784
YTD Interest Income Recognized	6,951	9,186
Loans With No Related Allowance [Member]	'	'
Summarize of nonaccrual loans, accruing loans past due 90 days or more, and restructured loans	'	'
Recorded Investment	49,120	59,150
Unpaid Principal Balance	66,003	78,628
Related Allowance	0	0
YTD Average Recorded Investment	55,063	63,238
YTD Interest Income Recognized	334	951
Commercial And Industrial Financing Receivable [Member]	'	'
Summarize of nonaccrual loans, accruing loans past due 90 days or more, and restructured loans	'	'
Recorded Investment	88,098	70,236
Unpaid Principal Balance	98,082	84,999
Related Allowance	17,596	11,917
YTD Average Recorded Investment	91,251	75,291
YTD Interest Income Recognized	2,594	2,047
Commercial And Industrial Financing Receivable [Member] | Loans With Related Allowance [Member]	'	'
Summarize of nonaccrual loans, accruing loans past due 90 days or more, and restructured loans	'	'
Recorded Investment	74,410	57,857
Unpaid Principal Balance	76,852	65,443
Related Allowance	17,596	11,917
YTD Average Recorded Investment	74,470	61,000
YTD Interest Income Recognized	2,548	1,741
Commercial And Industrial Financing Receivable [Member] | Loans With No Related Allowance [Member]	'	'
Summarize of nonaccrual loans, accruing loans past due 90 days or more, and restructured loans	'	'
Recorded Investment	13,688	12,379
Unpaid Principal Balance	21,230	19,556
Related Allowance	0	0
YTD Average Recorded Investment	16,781	14,291
YTD Interest Income Recognized	46	306
Commercial Real Estate Owner Occupied Portfolio [Member]	'	'
Summarize of nonaccrual loans, accruing loans past due 90 days or more, and restructured loans	'	'
Recorded Investment	35,914	42,673
Unpaid Principal Balance	40,845	47,903
Related Allowance	4,076	2,955
YTD Average Recorded Investment	38,187	45,151
YTD Interest Income Recognized	621	1,310
Commercial Real Estate Owner Occupied Portfolio [Member] | Loans With Related Allowance [Member]	'	'
Summarize of nonaccrual loans, accruing loans past due 90 days or more, and restructured loans	'	'
Recorded Investment	23,250	22,651
Unpaid Principal Balance	25,849	25,072
Related Allowance	4,076	2,955
YTD Average Recorded Investment	24,412	24,549
YTD Interest Income Recognized	585	995
Commercial Real Estate Owner Occupied Portfolio [Member] | Loans With No Related Allowance [Member]	'	'
Summarize of nonaccrual loans, accruing loans past due 90 days or more, and restructured loans	'	'
Recorded Investment	12,664	20,022
Unpaid Principal Balance	14,996	22,831
Related Allowance	0	0
YTD Average Recorded Investment	13,775	20,602
YTD Interest Income Recognized	36	315
Finance Leases Financing Receivable [Member]	'	'
Summarize of nonaccrual loans, accruing loans past due 90 days or more, and restructured loans	'	'
Recorded Investment	1,947	69
Unpaid Principal Balance	1,946	69
Related Allowance	739	29
YTD Average Recorded Investment	2,074	76
YTD Interest Income Recognized	0	0
Finance Leases Financing Receivable [Member] | Loans With Related Allowance [Member]	'	'
Summarize of nonaccrual loans, accruing loans past due 90 days or more, and restructured loans	'	'
Recorded Investment	1,946	69
Unpaid Principal Balance	1,946	69
Related Allowance	739	29
YTD Average Recorded Investment	2,074	76
YTD Interest Income Recognized	0	0
Finance Leases Financing Receivable [Member] | Loans With No Related Allowance [Member]	'	'
Summarize of nonaccrual loans, accruing loans past due 90 days or more, and restructured loans	'	'
Recorded Investment	1	0
Unpaid Principal Balance	0	0
Related Allowance	0	0
YTD Average Recorded Investment	0	0
YTD Interest Income Recognized	0	0
Commercial And Business Lending [Member]	'	'
Summarize of nonaccrual loans, accruing loans past due 90 days or more, and restructured loans	'	'
Recorded Investment	125,959	112,978
Unpaid Principal Balance	140,873	132,971
Related Allowance	22,411	14,901
YTD Average Recorded Investment	131,512	120,518
YTD Interest Income Recognized	3,215	3,357
Commercial And Business Lending [Member] | Loans With Related Allowance [Member]	'	'
Summarize of nonaccrual loans, accruing loans past due 90 days or more, and restructured loans	'	'
Recorded Investment	99,606	80,577
Unpaid Principal Balance	104,647	90,584
Related Allowance	22,411	14,901
YTD Average Recorded Investment	100,956	85,625
YTD Interest Income Recognized	3,133	2,736
Commercial And Business Lending [Member] | Loans With No Related Allowance [Member]	'	'
Summarize of nonaccrual loans, accruing loans past due 90 days or more, and restructured loans	'	'
Recorded Investment	26,353	32,401
Unpaid Principal Balance	36,226	42,387
Related Allowance	0	0
YTD Average Recorded Investment	30,556	34,893
YTD Interest Income Recognized	82	621
Commercial Real Estate Investor Portfolio Segment [Member]	'	'
Summarize of nonaccrual loans, accruing loans past due 90 days or more, and restructured loans	'	'
Recorded Investment	49,546	82,542
Unpaid Principal Balance	60,005	93,677
Related Allowance	4,258	7,895
YTD Average Recorded Investment	52,844	88,130
YTD Interest Income Recognized	1,121	2,865
Commercial Real Estate Investor Portfolio Segment [Member] | Loans With Related Allowance [Member]	'	'
Summarize of nonaccrual loans, accruing loans past due 90 days or more, and restructured loans	'	'
Recorded Investment	38,566	64,647
Unpaid Principal Balance	42,836	68,228
Related Allowance	4,258	7,895
YTD Average Recorded Investment	40,288	68,776
YTD Interest Income Recognized	988	2,735
Commercial Real Estate Investor Portfolio Segment [Member] | Loans With No Related Allowance [Member]	'	'
Summarize of nonaccrual loans, accruing loans past due 90 days or more, and restructured loans	'	'
Recorded Investment	10,980	17,895
Unpaid Principal Balance	17,169	25,449
Related Allowance	0	0
YTD Average Recorded Investment	12,556	19,354
YTD Interest Income Recognized	133	130
Commercial Real Estate Construction Financing Receivable [Member]	'	'
Summarize of nonaccrual loans, accruing loans past due 90 days or more, and restructured loans	'	'
Recorded Investment	8,992	10,260
Unpaid Principal Balance	12,480	14,388
Related Allowance	2,161	2,416
YTD Average Recorded Investment	10,015	11,372
YTD Interest Income Recognized	158	249
Commercial Real Estate Construction Financing Receivable [Member] | Loans With Related Allowance [Member]	'	'
Summarize of nonaccrual loans, accruing loans past due 90 days or more, and restructured loans	'	'
Recorded Investment	5,778	8,815
Unpaid Principal Balance	8,576	12,535
Related Allowance	2,161	2,416
YTD Average Recorded Investment	6,702	9,796
YTD Interest Income Recognized	158	236
Commercial Real Estate Construction Financing Receivable [Member] | Loans With No Related Allowance [Member]	'	'
Summarize of nonaccrual loans, accruing loans past due 90 days or more, and restructured loans	'	'
Recorded Investment	3,214	1,445
Unpaid Principal Balance	3,904	1,853
Related Allowance	0	0
YTD Average Recorded Investment	3,313	1,576
YTD Interest Income Recognized	0	13
Commercial Real Estate Lending [Member]	'	'
Summarize of nonaccrual loans, accruing loans past due 90 days or more, and restructured loans	'	'
Recorded Investment	58,538	92,802
Unpaid Principal Balance	72,485	108,065
Related Allowance	6,419	10,311
YTD Average Recorded Investment	62,859	99,502
YTD Interest Income Recognized	1,279	3,114
Commercial Real Estate Lending [Member] | Loans With Related Allowance [Member]	'	'
Summarize of nonaccrual loans, accruing loans past due 90 days or more, and restructured loans	'	'
Recorded Investment	44,344	73,462
Unpaid Principal Balance	51,412	80,763
Related Allowance	6,419	10,311
YTD Average Recorded Investment	46,990	78,572
YTD Interest Income Recognized	1,146	2,971
Commercial Real Estate Lending [Member] | Loans With No Related Allowance [Member]	'	'
Summarize of nonaccrual loans, accruing loans past due 90 days or more, and restructured loans	'	'
Recorded Investment	14,194	19,340
Unpaid Principal Balance	21,073	27,302
Related Allowance	0	0
YTD Average Recorded Investment	15,869	20,930
YTD Interest Income Recognized	133	143
Commercial Financing Receivable [Member]	'	'
Summarize of nonaccrual loans, accruing loans past due 90 days or more, and restructured loans	'	'
Recorded Investment	184,497	205,780
Unpaid Principal Balance	213,358	241,036
Related Allowance	28,830	25,212
YTD Average Recorded Investment	194,371	220,020
YTD Interest Income Recognized	4,494	6,471
Commercial Financing Receivable [Member] | Loans With Related Allowance [Member]	'	'
Summarize of nonaccrual loans, accruing loans past due 90 days or more, and restructured loans	'	'
Recorded Investment	143,950	154,039
Unpaid Principal Balance	156,059	171,347
Related Allowance	28,830	25,212
YTD Average Recorded Investment	147,946	164,197
YTD Interest Income Recognized	4,279	5,707
Commercial Financing Receivable [Member] | Loans With No Related Allowance [Member]	'	'
Summarize of nonaccrual loans, accruing loans past due 90 days or more, and restructured loans	'	'
Recorded Investment	40,547	51,741
Unpaid Principal Balance	57,299	69,689
Related Allowance	0	0
YTD Average Recorded Investment	46,425	55,823
YTD Interest Income Recognized	215	764
Home Equity [Member]	'	'
Summarize of nonaccrual loans, accruing loans past due 90 days or more, and restructured loans	'	'
Recorded Investment	31,843	34,800
Unpaid Principal Balance	35,251	40,436
Related Allowance	12,491	13,989
YTD Average Recorded Investment	32,706	36,717
YTD Interest Income Recognized	1,120	1,520
Home Equity [Member] | Loans With Related Allowance [Member]	'	'
Summarize of nonaccrual loans, accruing loans past due 90 days or more, and restructured loans	'	'
Recorded Investment	30,996	34,707
Unpaid Principal Balance	34,392	40,344
Related Allowance	12,491	13,989
YTD Average Recorded Investment	31,842	36,623
YTD Interest Income Recognized	1,105	1,518
Home Equity [Member] | Loans With No Related Allowance [Member]	'	'
Summarize of nonaccrual loans, accruing loans past due 90 days or more, and restructured loans	'	'
Recorded Investment	847	93
Unpaid Principal Balance	859	92
Related Allowance	0	0
YTD Average Recorded Investment	864	94
YTD Interest Income Recognized	15	2
Installment and Credit Cards [Member]	'	'
Summarize of nonaccrual loans, accruing loans past due 90 days or more, and restructured loans	'	'
Recorded Investment	1,759	1,360
Unpaid Principal Balance	1,979	1,676
Related Allowance	339	487
YTD Average Recorded Investment	1,864	1,753
YTD Interest Income Recognized	41	100
Installment and Credit Cards [Member] | Loans With Related Allowance [Member]	'	'
Summarize of nonaccrual loans, accruing loans past due 90 days or more, and restructured loans	'	'
Recorded Investment	1,759	1,360
Unpaid Principal Balance	1,979	1,676
Related Allowance	339	487
YTD Average Recorded Investment	1,864	1,753
YTD Interest Income Recognized	41	100
Installment and Credit Cards [Member] | Loans With No Related Allowance [Member]	'	'
Summarize of nonaccrual loans, accruing loans past due 90 days or more, and restructured loans	'	'
Recorded Investment	0	0
Unpaid Principal Balance	0	0
Related Allowance	0	0
YTD Average Recorded Investment	0	0
YTD Interest Income Recognized	0	0
Residential, Prime, Financing Receivable [Member]	'	'
Summarize of nonaccrual loans, accruing loans past due 90 days or more, and restructured loans	'	'
Recorded Investment	70,642	67,473
Unpaid Principal Balance	75,302	78,546
Related Allowance	12,091	12,187
YTD Average Recorded Investment	71,694	69,532
YTD Interest Income Recognized	1,630	2,046
Residential, Prime, Financing Receivable [Member] | Loans With Related Allowance [Member]	'	'
Summarize of nonaccrual loans, accruing loans past due 90 days or more, and restructured loans	'	'
Recorded Investment	62,916	60,157
Unpaid Principal Balance	67,457	69,699
Related Allowance	12,091	12,187
YTD Average Recorded Investment	63,920	62,211
YTD Interest Income Recognized	1,526	1,861
Residential, Prime, Financing Receivable [Member] | Loans With No Related Allowance [Member]	'	'
Summarize of nonaccrual loans, accruing loans past due 90 days or more, and restructured loans	'	'
Recorded Investment	7,726	7,316
Unpaid Principal Balance	7,845	8,847
Related Allowance	0	0
YTD Average Recorded Investment	7,774	7,321
YTD Interest Income Recognized	104	185
Consumer Loan [Member]	'	'
Summarize of nonaccrual loans, accruing loans past due 90 days or more, and restructured loans	'	'
Recorded Investment	104,244	103,633
Unpaid Principal Balance	112,532	120,658
Related Allowance	24,921	26,663
YTD Average Recorded Investment	106,264	108,002
YTD Interest Income Recognized	2,791	3,666
Consumer Loan [Member] | Loans With Related Allowance [Member]	'	'
Summarize of nonaccrual loans, accruing loans past due 90 days or more, and restructured loans	'	'
Recorded Investment	95,671	96,224
Unpaid Principal Balance	103,828	111,719
Related Allowance	24,921	26,663
YTD Average Recorded Investment	97,626	100,587
YTD Interest Income Recognized	2,672	3,479
Consumer Loan [Member] | Loans With No Related Allowance [Member]	'	'
Summarize of nonaccrual loans, accruing loans past due 90 days or more, and restructured loans	'	'
Recorded Investment	8,573	7,409
Unpaid Principal Balance	8,704	8,939
Related Allowance	0	0
YTD Average Recorded Investment	8,638	7,415
YTD Interest Income Recognized	$119	$187

Loans_Allowance_for_Loan_Losse9

Loans, Allowance for Loan Losses, and Credit Quality Troubled Debt Restructurings Performing and Nonaccrual (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Financing Receivable, Modifications [Line Items]	'	'
Performing Restructured Loans	$104,603	$123,985
Nonaccrual Restructured Loans	63,314	59,585
Commercial and Industrial Portfolio Segment [Member]	'	'
Financing Receivable, Modifications [Line Items]	'	'
Performing Restructured Loans	36,956	32,517
Nonaccrual Restructured Loans	4,759	6,900
Commercial Real Estate Owner Occupied Portfolio [Member]	'	'
Financing Receivable, Modifications [Line Items]	'	'
Performing Restructured Loans	11,574	13,009
Nonaccrual Restructured Loans	8,031	10,999
Commercial Real Estate Investor Portfolio Segment [Member]	'	'
Financing Receivable, Modifications [Line Items]	'	'
Performing Restructured Loans	24,439	44,946
Nonaccrual Restructured Loans	17,472	18,069
Commercial Real Estate Construction Financing Receivable [Member]	'	'
Financing Receivable, Modifications [Line Items]	'	'
Performing Restructured Loans	805	3,793
Nonaccrual Restructured Loans	2,833	2,065
Home Equity Port Folio Segments [Member]	'	'
Financing Receivable, Modifications [Line Items]	'	'
Performing Restructured Loans	10,582	9,633
Nonaccrual Restructured Loans	6,729	5,419
Installment and Credit Cards [Member]	'	'
Financing Receivable, Modifications [Line Items]	'	'
Performing Restructured Loans	1,106	246
Nonaccrual Restructured Loans	230	451
Residential Portfolio Segment [Member]	'	'
Financing Receivable, Modifications [Line Items]	'	'
Performing Restructured Loans	19,141	19,841
Nonaccrual Restructured Loans	$23,260	$15,682

Recovered_Sheet2

Loans, Allowance for Loan Losses, and Credit Quality Loans Modified in a Troubled Debt Restructuring (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Financing Receivable, Modifications [Line Items]	'	'	'	'
Number of Loans	103	74	203	249
Recorded Investment	$18,504	$12,898	$26,373	$38,791
Unpaid Principal Balance	19,168	14,235	27,599	43,394
Commercial and Industrial Portfolio Segment [Member]	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Number of Loans	10	19	13	58
Recorded Investment	7,383	5,479	7,695	11,379
Unpaid Principal Balance	7,384	6,384	7,707	14,028
Commercial Real Estate Owner Occupied Portfolio [Member]	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Number of Loans	0	7	2	17
Recorded Investment	0	3,373	1,123	9,313
Unpaid Principal Balance	0	3,488	1,260	9,596
Commercial Real Estate Investor Portfolio Segment [Member]	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Number of Loans	3	10	4	18
Recorded Investment	5,603	1,222	6,096	5,013
Unpaid Principal Balance	5,918	1,304	6,425	5,320
Commercial Real Estate Construction Financing Receivable [Member]	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Number of Loans	1	3	2	9
Recorded Investment	8	227	14	2,006
Unpaid Principal Balance	8	248	14	2,084
Home Equity Port Folio Segments [Member]	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Number of Loans	42	16	94	74
Recorded Investment	1,428	933	3,407	4,149
Unpaid Principal Balance	1,486	985	3,593	4,554
Installment and Credit Cards [Member]	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Number of Loans	2	0	3	2
Recorded Investment	25	0	34	187
Unpaid Principal Balance	25	0	45	193
Residential Portfolio Segment [Member]	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Number of Loans	45	19	85	71
Recorded Investment	4,057	1,664	8,004	6,744
Unpaid Principal Balance	$4,347	$1,826	$8,555	$7,619

Recovered_Sheet3

Loans, Allowance for Loan Losses, and Credit Quality Troubled Debt Restructurings Subsequent Default (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Financing Receivable, Modifications [Line Items]	'	'	'	'
Number of Loans	32	24	84	56
Recorded Investment	$2,372	$2,790	$7,744	$7,438
Commercial and Industrial Portfolio Segment [Member]	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Number of Loans	0	8	1	18
Recorded Investment	0	506	52	1,626
Commercial Real Estate Owner Occupied Portfolio [Member]	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Number of Loans	0	2	2	4
Recorded Investment	0	464	203	578
Commercial Real Estate Investor Portfolio Segment [Member]	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Number of Loans	1	1	2	5
Recorded Investment	493	405	1,613	1,992
Commercial Real Estate Construction Financing Receivable [Member]	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Number of Loans	0	1	1	2
Recorded Investment	0	118	160	158
Home Equity Port Folio Segments [Member]	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Number of Loans	12	4	25	12
Recorded Investment	367	147	939	699
Installment and Credit Cards [Member]	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Number of Loans	1	0	3	0
Recorded Investment	10	0	34	0
Residential Portfolio Segment [Member]	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Number of Loans	18	8	50	15
Recorded Investment	$1,502	$1,150	$4,743	$2,385

Recovered_Sheet4

Loans, Allowance for Loan Losses, and Credit Quality (Details Textuals) (USD $)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Loans Allowance For Loan Losses And Credit Quality Disclosure Textuals [Line Items]	'	'	'	'	'
Interest income recognized on accruing restructured loans	'	'	$4,000,000	'	$6,000,000
Restructured Loans Subsequently Accruing	10,000,000	'	10,000,000	'	'
YTD restructured loans still on nonaccrual	16,000,000	'	16,000,000	'	'
90 Days or More Past Due	62,373,000	'	62,373,000	'	86,863,000
Financing Receivable Modification Recorded Investment	18,504,000	12,898,000	26,373,000	38,791,000	'
Accruing Loans [Member]	'	'	'	'	'
Loans Allowance For Loan Losses And Credit Quality Disclosure Textuals [Line Items]	'	'	'	'	'
90 Days or More Past Due	$1,690,000	'	$1,690,000	'	$2,350,000

Goodwill_and_Other_Intangible_1

Goodwill and Other Intangible Assets Summary of Core Deposit and Other Intangibles (Details) (USD $)	3 Months Ended		9 Months Ended			12 Months Ended	9 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2014	Dec. 31, 2013
					Core Deposits Member	Core Deposits Member	Other Intangible Assets [Member]	Other Intangible Assets [Member]
Summary of core deposit intangibles and other intangibles	'	'	'	'	'	'	'	'
Gross carrying amount	'	'	'	'	$36,230	$36,230	$19,283	$19,283
Accumulated amortization	'	'	'	'	-33,878	-31,565	-13,423	-12,764
Total Estimated Amortization Expense	'	'	'	'	2,352	4,665	5,860	6,519
Amortization of other intangible assets	$990	$1,010	$2,972	$3,032	$2,313	$3,122	$659	$921

Goodwill_and_Other_Intangible_2

Goodwill and Other Intangible Assets Mortgage Servicing Rights Roll-Forward (Details) (USD $)	9 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Mortgage servicing rights:	'	'
Servicing Asset at Amortized Cost, Beginning Balance	$64,193	$61,425
Additions	5,844	18,256
Amortization	-8,224	-15,488
Servicing Asset at Amortized Cost, Ending Balance	61,813	64,193
Valuation allowance at beginning of period	-913	-15,476
(Additions) / Recoveries, net	89	14,563
Valuation allowance at end of period	-824	-913
Mortgage servicing rights, net	60,989	63,280
Fair value of mortgage servicing rights	69,940	74,444
Portfolio of residential mortgage loans serviced for others ("servicing portfolio")	8,012,000	8,084,000
Mortgage servicing rights, net to servicing portfolio	0.76%	0.78%
Mortgage servicing rights expense (1)	$8,135	$925

Goodwill_and_Other_Intangible_3

Goodwill and Other Intangible Assets Estimated Future Amortization Expense (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Core Deposits Member	'	'
Estimated future amortization expense	'	'
Six months ending December 31, 2014	$555	'
Year ending December 31, 2015	1,404	'
Year ending December 31, 2016	281	'
Year ending December 31, 2017	112	'
Year ending December 31, 2018	0	'
Year ending December 31, 2019	0	'
Beyond 2019	0	'
Total Estimated Amortization Expense	2,352	4,665
Other Intangible Assets [Member]	'	'
Estimated future amortization expense	'	'
Six months ending December 31, 2014	220	'
Year ending December 31, 2015	839	'
Year ending December 31, 2016	803	'
Year ending December 31, 2017	770	'
Year ending December 31, 2018	740	'
Year ending December 31, 2019	441	'
Beyond 2019	2,047	'
Total Estimated Amortization Expense	5,860	6,519
Mortgage Service Rights [Member]	'	'
Estimated future amortization expense	'	'
Six months ending December 31, 2014	2,773	'
Year ending December 31, 2015	9,760	'
Year ending December 31, 2016	8,084	'
Year ending December 31, 2017	6,727	'
Year ending December 31, 2018	5,621	'
Year ending December 31, 2019	4,721	'
Beyond 2019	24,127	'
Total Estimated Amortization Expense	$61,813	'

Goodwill_and_Other_Intangible_4

Goodwill and Other Intangible Assets (Details Textuals) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Goodwill [Line Items]	'	'
Goodwill	$929,168	$929,168

Short_and_Longterm_Funding_Det

Short and Long-term Funding (Details) (USD $)	9 Months Ended
	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2012	Sep. 30, 2011	Mar. 31, 2011
Short-term Funding	'	'	'	'	'
Federal funds purchased	$272,190,000	$56,195,000	'	'	'
Securities sold under agreements to repurchase	493,451,000	419,247,000	'	'	'
Federal funds purchased and securities sold under agreements to repurchase	765,641,000	475,442,000	'	'	'
Federal Home Loan Bank ("FHLB") short-term advances	605,000,000	200,000,000	'	'	'
Commercial paper	59,539,000	65,484,000	'	'	'
Other short-term funding	664,539,000	265,484,000	'	'	'
Total short-term funding	1,430,180,000	740,926,000	'	'	'
Long-term Funding	'	'	'	'	'
Federal Home Loan Bank long-term advances	2,500,268,000	2,500,297,000	'	'	'
Senior notes , at par	430,000,000	585,000,000	'	'	'
Other long-term funding and capitalized costs	1,279,000	1,970,000	'	'	'
Total long-term funding	2,931,547,000	3,087,267,000	'	'	'
Total short and long-term funding	4,361,727,000	3,828,193,000	'	'	'
Long-term Funding (Textuals) [Abstract]	'	'	'	'	'
Weighted average interest rate of Long-term advances	0.10%	0.10%	'	'	'
New senior debt issued	'	'	$155,000,000	$130,000,000	$300,000,000
Debt instrument description	'reprice at varying intervals, including $1.0 billion repricing at four week intervals, $750 million repricing at 13 week intervals, and $750 million repricing daily	'	'	'	'
Debt instrument description of variable rate basis	'FHLB discount note	'	'	'	'
Senior Notes [Member]	'	'	'	'	'
Long Term Debt Disclosure [Line Items]	'	'	'	'	'
Percentage of interest rate on senior notes	'	'	'	5.13%	5.13%

Income_Taxes_Details

Income Taxes (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Income Taxes (Textuals) [Abstract]	'	'	'	'
Income taxes	$24,478	$21,396	$66,775	$65,354
Effective income tax rate	'	'	32.02%	31.68%

Recovered_Sheet5

Derivative And Hedging Activities Derivative Instruments Not Designated as Hedging Instruments (Details) (USD $)	9 Months Ended		12 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014		Dec. 31, 2013
Derivative Instruments Not Designated as Hedging Instruments [Abstract]	'		'
Fair Value	$31,862		$42,980
Other Assets [Member] | Interest Rate Lock Commitments [Member]	'		'
Derivative Instruments Not Designated as Hedging Instruments [Abstract]	'		'
Notional Amount	145,037		102,225
Fair Value	1,440		416
Other Assets [Member] | Forward Commitments [Member]	'		'
Derivative Instruments Not Designated as Hedging Instruments [Abstract]	'		'
Notional Amount	'		135,000
Fair Value	'		1,301
Other Assets [Member] | Purchased deposit option [Member]	'		'
Derivative Instruments Not Designated as Hedging Instruments [Abstract]	'		'
Notional Amount	111,163		115,953
Fair Value	6,943		7,328
Other Liabilities [Member] | Forward Commitments [Member]	'		'
Derivative Instruments Not Designated as Hedging Instruments [Abstract]	'		'
Notional Amount	247,000		'
Fair Value	-623		'
Other Liabilities [Member] | Written deposit option [Member]	'		'
Derivative Instruments Not Designated as Hedging Instruments [Abstract]	'		'
Notional Amount	111,163		115,953
Fair Value	-6,943		-7,328
Trading Assets [Member] | Interest Rate Related Instruments Customer and Mirror [Member]	'		'
Derivative Instruments Not Designated as Hedging Instruments [Abstract]	'		'
Notional Amount	1,665,024		1,821,787
Fair Value	31,862		42,980
Receive Rate	1.62%	[1]	1.63%	[1]
Pay Rate	1.62%	[1]	1.63%	[1]
Maturity	'3 years 5 months		'3 years 9 months
Trading Assets [Member] | Foreign Currency Exchange Forward [Member]	'		'
Derivative Instruments Not Designated as Hedging Instruments [Abstract]	'		'
Notional Amount	69,737		25,747
Fair Value	2,143		748
Trading Liabilities [Member] | Interest Rate Related Instruments Customer and Mirror [Member]	'		'
Derivative Instruments Not Designated as Hedging Instruments [Abstract]	'		'
Notional Amount	1,665,024		1,821,787
Fair Value	-34,071		-45,815
Receive Rate	1.62%	[1]	1.63%	[1]
Pay Rate	1.62%	[1]	1.63%	[1]
Maturity	'3 years 5 months		'3 years 9 months
Trading Liabilities [Member] | Foreign Currency Exchange Forward [Member]	'		'
Derivative Instruments Not Designated as Hedging Instruments [Abstract]	'		'
Notional Amount	65,277		24,413
Fair Value	($1,932)		($655)
[1]	(1)Reflects the weighted average receive rate and pay rate for the interest rate swap derivative financial instruments only.

Recovered_Sheet6

Derivative And Hedging Activities Gains and Losses on Derivative Instruments Not Designated at Hedging Instruments (Details) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013
Interest Rate Lock Commitments [Member]	'	'
Gain (loss) on derivative instruments not designated as hedging instruments	'	'
Gain / (Loss) Recognized in Income	$1,024	($4,234)
Forward Contracts [Member]	'	'
Gain (loss) on derivative instruments not designated as hedging instruments	'	'
Gain / (Loss) Recognized in Income	-1,924	-4,406
Capital Market Fees [Member] | Interest Rate Related Instruments Customer and Mirror [Member]	'	'
Gain (loss) on derivative instruments not designated as hedging instruments	'	'
Gain / (Loss) Recognized in Income	626	2,600
Capital Market Fees [Member] | Foreign Exchange Forward [Member]	'	'
Gain (loss) on derivative instruments not designated as hedging instruments	'	'
Gain / (Loss) Recognized in Income	$118	$4

Derivative_and_Hedging_Activit2

Derivative and Hedging Activities (Details Textuals) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Derivative and Hedging Activities (Textuals) [Abstract]	'	'
Investment securities and cash equivalents pledged as collateral	$11	$42
Derivative collateral right to reclaim cash	$10	$6

Balance_Sheet_Offsetting_Detai

Balance Sheet Offsetting (Details) (Interest Rate Contract [Member], USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Interest Rate Contract [Member]	'	'
Offsetting of Derivative Assets [Abstract]	'	'
Gross amounts recognized	$1,406	$3,084
Gross amounts offset in the balance sheet	0	0
Net amounts presented in the balance sheet	1,406	3,084
Financial instruments	-1,406	-3,082
Collateral	0	0
Net amount	0	2
Offsetting of Derivative Liabilities [Abstract]	'	'
Gross amounts recognized	31,898	41,786
Gross amounts offset in the balance sheet	0	0
Net amounts presented in the balance sheet	31,898	41,786
Financial instruments	-1,406	-3,082
Collateral	-21,149	-33,405
Net amount	$9,343	$5,299

Commitments_OffBalance_Sheet_A2

Commitments, Off-Balance Sheet Arrangements and Contingent Liabilities Summary of Lending Related and Other Commitments (Details) (USD $)	Sep. 30, 2014		Dec. 31, 2013
In Thousands, unless otherwise specified
Commitments to Extend Credit [Member]	'		'
Summary of lending-related and other commitments	'		'
Lending related commitments	$6,703,718	[1],[2]	$6,367,771	[1],[2]
Commercial Letters Of Credit [Member]	'		'
Summary of lending-related and other commitments	'		'
Lending related commitments	8,705	[1]	12,034	[1]
Standby Letters of Credit [Member]	'		'
Summary of lending-related and other commitments	'		'
Lending related commitments	$352,445	[3]	$370,773	[3]
[1]	(1)B B B B B B B B These off-balance sheet financial instruments are exercisable at the market rate prevailing at the date the underlying transaction will be completed and, thus, are deemed to have no current fair value, or the fair value is based on fees currently charged to enter into similar agreements and is not material at September 30, 2014 or December 31, 2013.
[2]	(2)B B B B B B B B Interest rate lock commitments to originate residential mortgage loans held for sale are considered derivative instruments and are disclosed in Note 10.
[3]	(3)B B B B B B B B The Corporation has established a liability of $4 million at both September 30, 2014 and December 31, 2013, as an estimate of the fair value of these financial instruments.

Commitments_OffBalance_Sheet_A3

Commitments, Off-Balance Sheet Arrangements and Contingent Liabilities Residential Mortgage Repurchase Reserve (Details) (Mortgage Repurchase Reserve [Member], USD $)	9 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Mortgage Repurchase Reserve [Member]	'	'
Residential mortgage repurchase reserve	'	'
Balance at beginning of period	$5,700	$3,300
Repurchase provision (recovery) expense	-1,883	5,909
Charge offs	417	3,509
Balance at end of period	$3,400	$5,700

Commitments_OffBalance_Sheet_A4

Commitments, Off-Balance Sheet Arrangements and Contingent Liabilities (Details Textuals) (USD $)	Sep. 30, 2014	Dec. 31, 2013	Dec. 31, 2012
Commitments, Off-Balance Sheet Arrangements, and Contingent Liabilities (Textuals) [Line Items]	'	'	'
Standby letters of credit Fair value	$3,526,000	$3,754,000	'
Carrying value of investments	28,000,000	33,000,000	'
Commitments under unconsolidated projects	15,000,000	16,000,000	'
Residential mortgage loans sold with recourse risk	44,000,000	56,000,000	'
Residential mortgage loans sold with credit recourse risk	190,000,000	233,000,000	'
Loans sold to outside investors original amount	18,400,000,000	'	'
Loans sold to outside investors remaining outstanding amount	7,600,000,000	'	'
Loans repurchased under make whole requests	4,000,000	3,000,000	'
Loss reimbursements under make whole requests	500,000	3,000,000	'
Mortgage Repurchase Reserve [Member]	'	'	'
Commitments, Off-Balance Sheet Arrangements, and Contingent Liabilities (Textuals) [Line Items]	'	'	'
Balance at end of period	3,400,000	5,700,000	3,300,000
Reserve for Off-balance Sheet Activities [Member]	'	'	'
Commitments, Off-Balance Sheet Arrangements, and Contingent Liabilities (Textuals) [Line Items]	'	'	'
Balance at end of period	$24,400,000	$21,900,000	$21,800,000

Fair_Value_Measurements_Asset_

Fair Value Measurements Asset and Liabilities Measured at Fair Value on a Recurring Basis (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Investment securities available for sale:	'	'
Investment securities available for sale, fair value	$5,345,422	$5,250,585
Trading assets	34,005	43,728
Liabilities, Fair Value Disclosure [Abstract]	'	'
Trading liabilities	36,003	46,470
Fair Value, Inputs, Level 3 [Member] | Federal agency securities [Member]	'	'
Investment securities available for sale:	'	'
Investment securities available for sale, fair value	0	'
Fair Value, Measurements, Recurring [Member]	'	'
Investment securities available for sale:	'	'
Trading assets	42,388	52,773
Liabilities, Fair Value Disclosure [Abstract]	'	'
Trading liabilities	43,569	53,798
Fair Value, Measurements, Recurring [Member] | US Treasury Securities [Member]	'	'
Investment securities available for sale:	'	'
Investment securities available for sale, fair value	996	1,002
Fair Value, Measurements, Recurring [Member] | Federal agency securities [Member]	'	'
Investment securities available for sale:	'	'
Investment securities available for sale, fair value	0	0
Fair Value, Measurements, Recurring [Member] | Obligations of state and political subdivisions (municipal securities) [Member]	'	'
Investment securities available for sale:	'	'
Investment securities available for sale, fair value	614,436	676,080
Fair Value, Measurements, Recurring [Member] | Government-Sponsored Enterprise (GSE) [Member]	'	'
Investment securities available for sale:	'	'
Investment securities available for sale, fair value	3,741,040	3,838,430
Fair Value, Measurements, Recurring [Member] | Private Label [Member]	'	'
Investment securities available for sale:	'	'
Investment securities available for sale, fair value	2,482	3,014
Fair Value, Measurements, Recurring [Member] | GNMA commercial mortgage-related securities [Member]	'	'
Investment securities available for sale:	'	'
Investment securities available for sale, fair value	980,602	647,477
Fair Value, Measurements, Recurring [Member] | Asset-backed Securities [Member]	'	'
Investment securities available for sale:	'	'
Investment securities available for sale, fair value	'	23,059
Fair Value, Measurements, Recurring [Member] | Other Debt And Other Equity Securities [Member]	'	'
Investment securities available for sale:	'	'
Investment securities available for sale, fair value	5,866	61,523
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]	'	'
Investment securities available for sale:	'	'
Investment securities available for sale, fair value	3,662	4,240
Trading assets	0	0
Liabilities, Fair Value Disclosure [Abstract]	'	'
Trading liabilities	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | US Treasury Securities [Member]	'	'
Investment securities available for sale:	'	'
Investment securities available for sale, fair value	996	1,002
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Federal agency securities [Member]	'	'
Investment securities available for sale:	'	'
Investment securities available for sale, fair value	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Obligations of state and political subdivisions (municipal securities) [Member]	'	'
Investment securities available for sale:	'	'
Investment securities available for sale, fair value	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Government-Sponsored Enterprise (GSE) [Member]	'	'
Investment securities available for sale:	'	'
Investment securities available for sale, fair value	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Private Label [Member]	'	'
Investment securities available for sale:	'	'
Investment securities available for sale, fair value	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | GNMA commercial mortgage-related securities [Member]	'	'
Investment securities available for sale:	'	'
Investment securities available for sale, fair value	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Asset-backed Securities [Member]	'	'
Investment securities available for sale:	'	'
Investment securities available for sale, fair value	'	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Other Debt And Other Equity Securities [Member]	'	'
Investment securities available for sale:	'	'
Investment securities available for sale, fair value	2,666	3,238
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]	'	'
Investment securities available for sale:	'	'
Investment securities available for sale, fair value	5,341,560	5,246,046
Trading assets	40,948	51,056
Liabilities, Fair Value Disclosure [Abstract]	'	'
Trading liabilities	42,946	53,798
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | US Treasury Securities [Member]	'	'
Investment securities available for sale:	'	'
Investment securities available for sale, fair value	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Federal agency securities [Member]	'	'
Investment securities available for sale:	'	'
Investment securities available for sale, fair value	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Obligations of state and political subdivisions (municipal securities) [Member]	'	'
Investment securities available for sale:	'	'
Investment securities available for sale, fair value	614,436	676,080
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Government-Sponsored Enterprise (GSE) [Member]	'	'
Investment securities available for sale:	'	'
Investment securities available for sale, fair value	3,741,040	3,838,430
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Private Label [Member]	'	'
Investment securities available for sale:	'	'
Investment securities available for sale, fair value	2,482	3,014
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | GNMA commercial mortgage-related securities [Member]	'	'
Investment securities available for sale:	'	'
Investment securities available for sale, fair value	980,602	647,477
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Asset-backed Securities [Member]	'	'
Investment securities available for sale:	'	'
Investment securities available for sale, fair value	'	23,059
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Other Debt And Other Equity Securities [Member]	'	'
Investment securities available for sale:	'	'
Investment securities available for sale, fair value	3,000	57,986
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]	'	'
Investment securities available for sale:	'	'
Investment securities available for sale, fair value	200	299
Trading assets	1,440	1,717
Liabilities, Fair Value Disclosure [Abstract]	'	'
Trading liabilities	623	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | US Treasury Securities [Member]	'	'
Investment securities available for sale:	'	'
Investment securities available for sale, fair value	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Federal agency securities [Member]	'	'
Investment securities available for sale:	'	'
Investment securities available for sale, fair value	'	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Obligations of state and political subdivisions (municipal securities) [Member]	'	'
Investment securities available for sale:	'	'
Investment securities available for sale, fair value	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Government-Sponsored Enterprise (GSE) [Member]	'	'
Investment securities available for sale:	'	'
Investment securities available for sale, fair value	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Private Label [Member]	'	'
Investment securities available for sale:	'	'
Investment securities available for sale, fair value	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | GNMA commercial mortgage-related securities [Member]	'	'
Investment securities available for sale:	'	'
Investment securities available for sale, fair value	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Asset-backed Securities [Member]	'	'
Investment securities available for sale:	'	'
Investment securities available for sale, fair value	'	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Other Debt And Other Equity Securities [Member]	'	'
Investment securities available for sale:	'	'
Investment securities available for sale, fair value	$200	$299

Fair_Value_Measurements_Assets

Fair Value Measurements Assets and Liabilities Measured at Fair Value Using Significant Unobservable Inputs (Details) (USD $)	9 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Available-for-sale Securities [Member]	'	'
Assets and Liabilities Measured at Fair Value Using Significant Unobservable Inputs (Level 3)	'	'
Beginning Balance	$299	$480
Total net gain (losses) included in income:	'	'
Sale of investment securities	-99	-111
Total net losses included in other comprehensive income	'	'
Unrealized investment securities gains (losses)	'	-70
Ending Balance	200	299
Derivatives [Member]	'	'
Assets and Liabilities Measured at Fair Value Using Significant Unobservable Inputs (Level 3)	'	'
Beginning Balance	1,717	7,647
Total net gain (losses) included in income:	'	'
Mortgage derivative gain (loss), net	-900	-5,930
Total net losses included in other comprehensive income	'	'
Ending Balance	$817	$1,717

Fair_Value_Measurements_Assets1

Fair Value Measurements Assets and Liabilities Measured at Fair Value on a Non-recurring Basis (Details) (USD $)	Sep. 30, 2014		Dec. 31, 2013
In Thousands, unless otherwise specified
Assets and Liabilities Measured at Fair Value on a Non-recurring Basis	'		'
Loans held for sale	$142,097		$64,738
Mortgage servicing rights	60,989		63,280
Fair Value, Inputs, Level 1 [Member]	'		'
Assets and Liabilities Measured at Fair Value on a Non-recurring Basis	'		'
Loans held for sale	0		0
Fair Value, Inputs, Level 2 [Member]	'		'
Assets and Liabilities Measured at Fair Value on a Non-recurring Basis	'		'
Loans held for sale	142,097		64,738
Fair Value, Inputs, Level 3 [Member]	'		'
Assets and Liabilities Measured at Fair Value on a Non-recurring Basis	'		'
Loans held for sale	0		0
Fair Value, Measurements, Nonrecurring [Member]	'		'
Assets and Liabilities Measured at Fair Value on a Non-recurring Basis	'		'
Loans held for sale	142,097		64,738
Impaired Loans	83,771	[1]	88,049	[1]
Mortgage servicing rights	69,940		74,444
Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 1 [Member]	'		'
Assets and Liabilities Measured at Fair Value on a Non-recurring Basis	'		'
Loans held for sale	0		0
Impaired Loans	0	[1]	0	[1]
Mortgage servicing rights	0		0
Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 2 [Member]	'		'
Assets and Liabilities Measured at Fair Value on a Non-recurring Basis	'		'
Loans held for sale	142,097		64,738
Impaired Loans	0	[1]	0	[1]
Mortgage servicing rights	0		0
Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member]	'		'
Assets and Liabilities Measured at Fair Value on a Non-recurring Basis	'		'
Loans held for sale	0		0
Impaired Loans	83,771	[1]	88,049	[1]
Mortgage servicing rights	$69,940		$74,444
[1]	(1)B B B B B B B B Represents individually evaluated impaired loans, net of the related allowance for loan losses.

Fair_Value_Measurements_Fair_V

Fair Value Measurements Fair Value of Financial Instruments (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Financial assets	'	'
Cash and due from banks	$381,287	$455,482
Cash and due from banks, Fair Value	381,287	455,482
Interest-bearing deposits in other financial institutions	74,945	126,018
Interest-bearing deposits in other financial institutions, Fair value	74,945	126,018
Federal funds sold and securities purchased under agreements to resell	18,320	20,745
Federal funds sold and securities purchased under agreements to resell, Fair value	18,320	20,745
Investment securities held to maturity, carrying amount	301,941	175,210
Investment securities held to maturity, fair value	307,882	169,889
Investment securities available for sale, fair value	5,345,422	5,250,585
Investment securities available for sale, fair value	5,345,422	5,250,585
Federal Home Loan Bank and Federal Reserve Bank stocks, carrying amount	188,875	181,249
Federal Home Loan Bank and Federal Reserve Bank stocks, Fair value	188,875	181,249
Loans held for sale	141,672	64,738
Loans held for sale, fair value	142,097	64,738
Loans, net	16,892,828	15,627,946
Loans, net Fair value	17,038,692	15,599,094
Bank owned life insurance, carrying amount	571,422	568,413
Bank owned life insurance, Fair value	571,422	568,413
Accrued interest receivable, carrying amount	69,609	66,308
Accrued interest receivable, Fair value	69,609	66,308
Interest rate-related agreements (1), carrying amount	31,862	42,980
Interest rate-related agreements (1), fair value	31,862	42,980
Foreign currency exchange forwards	2,143	748
Foreign currency exchange forwards, Fair value	2,143	748
Interest rate lock commitments to originate residential mortgage loans held for sale	1,440	416
Interest rate lock commitments to originate residential mortgage loans held for sale, fair value	1,440	416
Forward commitments to sell residential mortgage loans, carrying value	0	1,301
Forward commitments to sell residential mortgage loans, fair value	0	1,301
Purchased options (time deposit), carrying value	6,943	7,328
Purchased options (time deposit), fair value	6,943	7,328
Financial liabilities	'	'
Noninterest-bearing demand, savings, interest-bearing demand, and money market deposits	16,687,892	15,581,971
Noninterest-bearing demand, savings, interest-bearing demand, and money market deposits, Fair value	16,687,892	15,581,971
Brokered CDs and other time deposits	1,513,366	1,685,196
Brokered CDs and other time deposits, Fair value	1,513,366	1,687,198
Short-term funding	1,430,180	740,926
Short-term funding, Fair value	1,430,180	740,926
Long-term funding	2,931,547	3,087,267
Long-term funding, fair value	2,922,749	3,085,893
Accrued interest payable	1,543	7,994
Accrued interest payable, Fair value	1,543	7,994
Interest rate-related agreements (1)	34,071	45,815
Interest rate-related agreements (1), Fair value	34,071	45,815
Foreign currency exchange forwards	1,932	655
Foreign currency exchange forwards, Fair value	1,932	655
Standby letters of credit (2), carrying amount	3,526	3,754
Standby letters of credit (2), Fair value	3,526	3,754
Forward commitments to sell residential mortgage loans	623	0
Forward commitments to sell residential mortgage loans, fair value	623	0
Written options (time deposit), carrying value	6,943	7,328
Written option (time deposit), fair value	6,943	7,328
Fair Value, Inputs, Level 1 [Member]	'	'
Financial assets	'	'
Cash and due from banks, Fair Value	381,287	455,482
Interest-bearing deposits in other financial institutions, Fair value	74,945	126,018
Federal funds sold and securities purchased under agreements to resell, Fair value	18,320	20,745
Investment securities held to maturity, fair value	0	0
Investment securities available for sale, fair value	3,662	4,240
Federal Home Loan Bank and Federal Reserve Bank stocks, Fair value	0	0
Loans held for sale, fair value	0	0
Loans, net Fair value	0	0
Bank owned life insurance, Fair value	0	0
Accrued interest receivable, Fair value	69,609	66,308
Interest rate-related agreements (1), fair value	0	0
Foreign currency exchange forwards, Fair value	0	0
Interest rate lock commitments to originate residential mortgage loans held for sale, fair value	0	0
Forward commitments to sell residential mortgage loans, fair value	0	0
Purchased options (time deposit), fair value	0	0
Financial liabilities	'	'
Noninterest-bearing demand, savings, interest-bearing demand, and money market deposits, Fair value	0	0
Brokered CDs and other time deposits, Fair value	0	0
Short-term funding, Fair value	0	0
Long-term funding, fair value	0	0
Accrued interest payable, Fair value	1,543	7,994
Interest rate-related agreements (1), Fair value	0	0
Foreign currency exchange forwards, Fair value	0	0
Standby letters of credit (2), Fair value	0	0
Forward commitments to sell residential mortgage loans	0	0
Written option (time deposit), fair value	0	0
Fair Value, Inputs, Level 2 [Member]	'	'
Financial assets	'	'
Cash and due from banks, Fair Value	0	0
Interest-bearing deposits in other financial institutions, Fair value	0	0
Federal funds sold and securities purchased under agreements to resell, Fair value	0	0
Investment securities held to maturity, fair value	307,882	169,889
Investment securities available for sale, fair value	5,341,560	5,246,046
Federal Home Loan Bank and Federal Reserve Bank stocks, Fair value	188,875	181,249
Loans held for sale, fair value	142,097	64,738
Loans, net Fair value	0	0
Bank owned life insurance, Fair value	571,422	568,413
Accrued interest receivable, Fair value	0	0
Interest rate-related agreements (1), fair value	31,862	42,980
Foreign currency exchange forwards, Fair value	2,143	748
Interest rate lock commitments to originate residential mortgage loans held for sale, fair value	0	0
Forward commitments to sell residential mortgage loans, fair value	0	0
Purchased options (time deposit), fair value	6,943	7,328
Financial liabilities	'	'
Noninterest-bearing demand, savings, interest-bearing demand, and money market deposits, Fair value	0	0
Brokered CDs and other time deposits, Fair value	1,513,366	1,687,198
Short-term funding, Fair value	1,430,180	740,926
Long-term funding, fair value	2,922,749	3,085,893
Accrued interest payable, Fair value	0	0
Interest rate-related agreements (1), Fair value	34,071	45,815
Foreign currency exchange forwards, Fair value	1,932	655
Standby letters of credit (2), Fair value	3,526	3,754
Forward commitments to sell residential mortgage loans	0	0
Written option (time deposit), fair value	6,943	7,328
Fair Value, Inputs, Level 3 [Member]	'	'
Financial assets	'	'
Cash and due from banks, Fair Value	0	0
Interest-bearing deposits in other financial institutions, Fair value	0	0
Federal funds sold and securities purchased under agreements to resell, Fair value	0	0
Investment securities held to maturity, fair value	0	0
Investment securities available for sale, fair value	200	299
Federal Home Loan Bank and Federal Reserve Bank stocks, Fair value	0	0
Loans held for sale, fair value	0	0
Loans, net Fair value	17,038,692	15,599,094
Bank owned life insurance, Fair value	0	0
Accrued interest receivable, Fair value	0	0
Interest rate-related agreements (1), fair value	0	0
Foreign currency exchange forwards, Fair value	0	0
Interest rate lock commitments to originate residential mortgage loans held for sale, fair value	1,440	416
Forward commitments to sell residential mortgage loans, fair value	0	1,301
Purchased options (time deposit), fair value	0	0
Financial liabilities	'	'
Noninterest-bearing demand, savings, interest-bearing demand, and money market deposits, Fair value	16,687,892	15,581,971
Brokered CDs and other time deposits, Fair value	0	0
Short-term funding, Fair value	0	0
Long-term funding, fair value	0	0
Accrued interest payable, Fair value	0	0
Interest rate-related agreements (1), Fair value	0	0
Foreign currency exchange forwards, Fair value	0	0
Standby letters of credit (2), Fair value	0	0
Forward commitments to sell residential mortgage loans	623	0
Written option (time deposit), fair value	$0	$0

Fair_Value_Measurements_Detail

Fair Value Measurements (Details Textuals) (USD $)	9 Months Ended	12 Months Ended
	Sep. 30, 2014	Dec. 31, 2013
Fair Value Measurements (Textuals) [Abstract]	'	'
Other real estate owned measured at fair value	$19,000,000	$29,000,000
Write down of Other Real Estate Owned	2,000,000	4,000,000
Commitment on standby letters of credit	$352,445,000	$370,773,000
Fair Value, Option, Quantitative Disclosures [Line Items]	'	'
Mortgage derivative interest rate lock commitments closing ratio	88.00%	'
Mortgage servicing rights (MSR) weighted average constant prepayment rate	13.40%	'
Weighted average discount rate	10.10%	'
MaximumMember	'	'
Fair Value, Option, Quantitative Disclosures [Line Items]	'	'
Weighted average discount rate	30.00%	'
MinimumMember	'	'
Fair Value, Option, Quantitative Disclosures [Line Items]	'	'
Weighted average discount rate	20.00%	'

Retirement_Plans_Components_of

Retirement Plans Components of Net Periodic Benefit Cost (Details) (USD $)	3 Months Ended		9 Months Ended		12 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Retirement Plans (Textuals) [Abstract]	'	'	'	'	'
Retirement eligible age for participation	'	'	'55	'	'
Years of service for pension plan eligibility	'	'	'5	'	'
Pension Contributions	'	'	$21,270	$28,000	'
Pension Plans, Defined Benefit [Member]	'	'	'	'	'
Net period benefit cost for the pension and postretirement plans	'	'	'	'	'
Service cost	2,975	2,975	8,925	8,925	12,078
Interest cost	1,790	1,548	5,370	4,643	6,237
Expected return on plan assets	-4,855	-4,305	-14,565	-12,915	-17,647
Amortization of prior service cost	15	17	45	52	72
Amortization of actuarial (gain) loss	326	1,073	975	3,218	4,344
Settlement charge	0	0	0	0	0
Total net periodic benefit cost	251	1,308	750	3,923	5,084
Other Postretirement Benefit Plans, Defined Benefit [Member]	'	'	'	'	'
Net period benefit cost for the pension and postretirement plans	'	'	'	'	'
Interest cost	39	40	116	120	142
Amortization of prior service cost	0	0	0	0	0
Amortization of actuarial (gain) loss	-9	0	-26	0	'
Total net periodic benefit cost	$30	$40	$90	$120	$142

Segment_Reporting_Selected_Seg

Segment Reporting Selected Segment Income Statement and Balance Sheet Data (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Segment Income Statement Data Abstract	'	'	'	'
Net interest income	$172,630	$160,509	$506,306	$478,344
Noninterest income	74,908	70,916	220,676	237,226
Total revenue	247,538	231,425	726,982	715,570
Provision for credit losses	1,000	-800	11,000	7,800
Noninterest expense	171,853	165,171	507,436	501,482
Income before income taxes	74,685	67,054	208,546	206,288
Income tax expense	24,478	21,396	66,775	65,354
Net income	50,207	45,658	141,771	140,934
Return on average allocated capital	10.40%	9.30%	9.80%	9.80%
Segment Balance Sheet Data	'	'	'	'
Average earning assets	23,096,717	21,039,467	22,513,323	20,891,857
Average loans	17,140,961	15,724,365	16,654,233	15,634,453
Average deposits	17,873,378	17,609,819	17,348,729	17,288,792
Average allocated capital	1,871,246	1,890,397	1,887,412	1,876,010
Corporate and Commercial Specialty [Member]	'	'	'	'
Segment Income Statement Data Abstract	'	'	'	'
Net interest income	71,716	75,677	209,212	222,705
Noninterest income	11,888	11,142	33,711	32,175
Total revenue	83,604	86,819	242,923	254,880
Provision for credit losses	11,074	13,097	34,983	38,161
Noninterest expense	35,044	32,094	103,383	93,806
Income before income taxes	37,486	41,628	104,557	122,913
Income tax expense	12,608	14,569	35,568	43,019
Net income	24,878	27,059	68,989	79,894
Return on average allocated capital	13.30%	14.80%	12.50%	14.70%
Segment Balance Sheet Data	'	'	'	'
Average earning assets	8,761,870	8,080,676	8,606,965	7,942,744
Average loans	8,750,207	8,074,076	8,595,980	7,933,954
Average deposits	5,092,314	5,124,746	4,841,852	4,964,426
Average allocated capital	744,605	726,588	736,285	724,974
Community, Consumer, and Business [Member]	'	'	'	'
Segment Income Statement Data Abstract	'	'	'	'
Net interest income	81,916	85,477	236,687	253,716
Noninterest income	54,601	55,366	170,547	191,236
Total revenue	136,517	140,843	407,234	444,952
Provision for credit losses	6,773	6,041	18,572	18,029
Noninterest expense	122,722	122,450	353,258	364,609
Income before income taxes	7,022	12,352	35,404	62,314
Income tax expense	2,458	4,324	12,391	21,810
Net income	4,564	8,028	23,013	40,504
Return on average allocated capital	3.10%	5.60%	5.40%	9.40%
Segment Balance Sheet Data	'	'	'	'
Average earning assets	8,310,839	7,647,106	7,973,138	7,696,572
Average loans	8,310,839	7,647,106	7,973,138	7,696,572
Average deposits	10,337,637	10,066,487	10,159,818	10,050,400
Average allocated capital	583,148	567,073	565,588	575,382
Risk Management and Shared Services [Member]	'	'	'	'
Segment Income Statement Data Abstract	'	'	'	'
Net interest income	18,998	-645	60,407	1,923
Noninterest income	8,419	4,408	16,418	13,815
Total revenue	27,417	3,763	76,825	15,738
Provision for credit losses	-16,847	-19,938	-42,555	-48,390
Noninterest expense	14,087	10,627	50,795	43,067
Income before income taxes	30,177	13,074	68,585	21,061
Income tax expense	9,412	2,503	18,816	525
Net income	20,765	10,571	49,769	20,536
Return on average allocated capital	14.20%	6.20%	10.50%	3.90%
Segment Balance Sheet Data	'	'	'	'
Average earning assets	6,024,008	5,311,685	5,933,220	5,252,541
Average loans	79,915	3,183	85,115	3,927
Average deposits	2,443,427	2,418,586	2,347,059	2,273,966
Average allocated capital	$543,493	$596,736	$585,539	$575,654

Accumulated_Other_Comprehensiv2

Accumulated Other Comprehensive Income (Loss) Reclassifications Out of AOCI (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Accumulated Other Comprehensive Income (Loss) [Line Items]	'	'	'	'
Beginning Balance	$10,494	($25,015)	($24,244)	$48,603
Other comprehensive income (loss) before reclassification	-20,123	-20,558	36,061	-142,318
Amounts reclassified from accumulated other comprehensive income (loss)	275	842	525	2,688
Income tax (expense) benefit	7,629	7,611	-14,067	53,907
Total other comprehensive income (loss)	-12,219	-12,105	22,519	-85,723
Ending Balance	-1,725	-37,120	-1,725	-37,120
Securities Available For Sale [Member]	'	'	'	'
Accumulated Other Comprehensive Income (Loss) [Line Items]	'	'	'	'
Beginning Balance	22,935	11,153	-11,396	86,109
Other comprehensive income (loss) before reclassification	-20,123	-20,558	36,061	-142,318
Amounts reclassified from accumulated other comprehensive income (loss)	-57	-248	-469	-582
Income tax (expense) benefit	7,757	8,031	-13,684	55,169
Total other comprehensive income (loss)	-12,423	-12,775	21,908	-87,731
Ending Balance	10,512	-1,622	10,512	-1,622
Defined Benefit Plans [Member]	'	'	'	'
Accumulated Other Comprehensive Income (Loss) [Line Items]	'	'	'	'
Beginning Balance	-12,441	-36,168	-12,848	-37,506
Other comprehensive income (loss) before reclassification	0	0	0	0
Amounts reclassified from accumulated other comprehensive income (loss)	332	1,090	994	3,270
Income tax (expense) benefit	-128	-420	-383	-1,262
Total other comprehensive income (loss)	204	670	611	2,008
Ending Balance	($12,237)	($35,498)	($12,237)	($35,498)