First Niagara Financial (FNFG) Inactive 10-K25 Feb 142013 Q4 Annual reportFinancial data

Company Profile

Document_and_Entity_Informatio

Document and Entity Information (USD $)	12 Months Ended
Document and Entity Information (USD $)	Dec. 31, 2013	Feb. 24, 2014	Jun. 30, 2013
Document and Entity Information [Abstract]	'	'	'
Entity Registrant Name	'FIRST NIAGARA FINANCIAL GROUP INC	'	'
Entity Central Index Key	'0001051741	'	'
Current Fiscal Year End Date	'--12-31	'	'
Entity Filer Category	'Large Accelerated Filer	'	'
Document Type	'10-K	'	'
Document Period End Date	31-Dec-13	'	'
Document Fiscal Year Focus	'2013	'	'
Document Fiscal Period Focus	'Q4	'	'
Amendment Flag	'false	'	'
Entity Common Stock, Shares Outstanding	'	353,897,001	'
Public Float	'	'	$3,534,226,180
Entity Well-known Seasoned Issuer	'Yes	'	'
Entity Voluntary Filers	'No	'	'
Entity Current Reporting Status	'Yes	'	'

Consolidated_Statements_of_Con

Consolidated Statements of Condition (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
ASSETS	'	'
Cash and cash equivalents	$463	$431
Investment securities:	'	'
Available for sale, at fair value (amortized cost of $7,319 and $10,658 in 2013 and 2012; includes pledged securities that can be sold or repledged of $303 and $586 in 2013 and 2012)	7,423	10,994
Held to maturity, at amortized cost (fair value of $3,988 and $1,374 in 2013 and 2012; includes pledged securities that can be sold or repledged of $388 and $31 in 2013 and 2012)	4,042	1,300
Federal Home Loan Bank and Federal Reserve Bank common stock, at amortized cost	469	420
Loans held for sale	50	155
Loans and leases (net of allowance for loan losses of $209 and $163 in 2013 and 2012)	21,230	19,547
Bank owned life insurance	415	404
Premises and equipment, net	418	411
Goodwill	2,449	2,484
Core deposit and other intangibles, net	94	134
Other assets	574	527
Total assets	37,628	36,806
Liabilities:	'	'
Deposits	26,665	27,677
Short-term borrowings	4,822	2,984
Long-term borrowings	734	732
Other	414	487
Total liabilities	32,635	31,880
Stockholdersâ€™ equity:	'	'
Preferred stock, $0.01 par value, 50,000,000 shares authorized; Series B, noncumulative perpetual preferred stock, $25 liquidation preference; 14,000,000 shares issued in 2013 and 2012	338	338
Common stock, $0.01 par value, 500,000,000 shares authorized; 366,002,045 shares issued in 2013 and 2012	4	4
Additional paid-in capital	4,235	4,231
Retained earnings	536	399
Accumulated other comprehensive income	62	157
Common stock held by employee stock ownership plan, 2,001,373 and 2,179,315 shares in 2013 and 2012	-17	-18
Treasury stock, at cost, 12,060,739 and 13,381,063 shares in 2013 and 2012	-165	-184
Total stockholdersâ€™ equity	4,993	4,927
Total liabilities and stockholdersâ€™ equity	$37,628	$36,806

Consolidated_Statements_of_Con1

Consolidated Statements of Condition (Parenthetical) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, except Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Statement of Financial Position [Abstract]	'	'
Amortized cost for securities available for sale	$7,319	$10,658
Fair value of pledged securities that can be sold or repledged	303	586
Fair value for securities held-to-maturity	3,988	1,374
Amortized cost of pledged securities that can be sold or repledged	388	31
Allowance for credit losses on loans and leases	$209	$163
Preferred stock, par value	$0.01	$0.01
Preferred stock, shares authorized	50,000,000	50,000,000
Preferred stock, shares issued	14,000,000	14,000,000
Liquidation preference	$25	$25
Common stock, par value	$0.01	$0.01
Common stock, shares authorized	500,000,000	500,000,000
Common stock, shares issued	366,002,045	366,002,045
Common stock held by employee stock ownership plan, shares	2,001,373	2,179,315
Treasury stock, shares	12,060,739	13,381,063

Consolidated_Statements_of_Inc

Consolidated Statements of Income (USD $)	12 Months Ended
In Millions, except Per Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Interest income:	'	'	'
Loans and leases	$845	$814	$705
Investment securities and other	365	362	361
Total interest income	1,210	1,176	1,065
Interest expense:	'	'	'
Deposits	53	67	83
Borrowings	64	86	101
Total interest expense	117	153	184
Net interest income	1,093	1,023	881
Provision for credit losses	105	92	58
Net interest income after provision for credit losses	988	931	823
Noninterest income:	'	'	'
Deposit service charges	104	91	66
Insurance commissions	67	68	65
Merchant and card fees	49	39	29
Wealth management services	58	41	31
Mortgage banking	18	32	15
Capital markets income	22	27	8
Lending and leasing	17	15	11
Bank owned life insurance	17	14	11
Gain on securities portfolio repositioning	0	21	0
Other	12	12	8
Total noninterest income	366	360	245
Noninterest expense:	'	'	'
Salaries and employee benefits	461	427	342
Occupancy and equipment	111	99	78
Technology and communications	115	101	62
Marketing and advertising	20	32	22
Professional services	39	41	36
Amortization of intangibles	40	45	26
Federal deposit insurance premiums	35	35	29
Merger and acquisition integration expenses	0	178	98
Restructuring charges	0	6	43
Other	110	88	71
Total noninterest expense	931	1,051	806
Income before income taxes	423	239	262
Income taxes	128	71	88
Net income	295	168	174
Preferred stock dividend	30	28	0
Net income available to common stockholders	$265	$141	$174
Earnings per share:	'	'	'
Basic (dollars per share)	$0.75	$0.40	$0.64
Diluted (dollars per share)	$0.75	$0.40	$0.64
Weighted average common shares outstanding:	'	'	'
Basic	350	349	271
Diluted	350	349	272
Dividends per common share	$0.32	$0.32	$0.64

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Income (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Statement of Comprehensive Income [Abstract]	'	'	'
Net income	$295	$168	$174
Securities available for sale:	'	'	'
Net unrealized (losses) gains arising during the year	-109	109	42
Reclassification adjustment for realized gains included in net income	0	-10	-3
Reclassification adjustment for net unrealized holding gains on securities transferred between available for sale and held to maturity during the year	-34	2	-4
Net unrealized (losses) gains on securities available for sale	-143	101	35
Net unrealized holding gains on securities transferred between available for sale and held to maturity:	'	'	'
Net unrealized holding gains on securities transferred during the year	34	-2	4
Less: amortization of net unrealized holding gains to income during the year	-12	-2	-1
Net unrealized holding gains on securities transferred during the year	22	-4	3
Net unrealized gains (losses) on interest rate swaps designated as cash flow hedges arising during the year	1	7	-16
Pension and post-retirement actuarial gains (losses)	25	-14	-11
Total other comprehensive (loss) income	-95	89	10
Total comprehensive income	$200	$258	$184

Consolidated_Statements_of_Cha

Consolidated Statements of Changes in Stockholders' Equity (USD $)	Total	Preferred stock	Common stock	Additional paid-in capital	Retained earnings	Accumulated other comprehensive income	Common stock held by ESOP	Treasury stock
In Millions	Total	Preferred stock	Common stock	Additional paid-in capital	Retained earnings	Accumulated other comprehensive income	Common stock held by ESOP	Treasury stock
Beginning Balance at Dec. 31, 2010	$2,765	$0	$2	$2,431	$377	$58	($21)	($81)
Net income	174	'	'	'	174	'	'	'
Total other comprehensive (loss) income, net	10	'	'	'	'	10	'	'
Purchases of treasury stock (9,106,000 shares)	-127	'	'	'	'	'	'	-127
Proceeds from follow-on stock offering, net of related expenses (56,911,764 shares)	468	'	1	467	'	'	'	'
Common stock issued for the acquisition of NewAlliance Bancshares, Inc. (93,984,715 shares) in 2011	1,332	'	1	1,331	'	'	'	'
Preferred stock issuance, net of related expenses (14,000,000 shares)	338	338	'	'	'	'	'	'
ESOP shares committed to be released (264,721 shares, 177,942 shares, and 177,942 shares in 2011, 2012 and 2013, respectively)	3	'	'	2	'	'	2	'
Stock-based compensation expense	8	'	'	8	'	'	'	'
Net tax expense from stock-based compensation	-1	'	'	-1	'	'	'	'
Exercise of stock options and restricted stock activity (932,173 shares, 786,670 shares, 1,320,324 shares in 2011, 2012, and 2013, respectively)	3	'	'	-8	-1	'	'	13
Common stock dividends of $0.64 per share in 2011 and $0.32 per share in 2012 and 2013	-175	'	'	'	-175	'	'	'
Ending Balance at Dec. 31, 2011	4,798	338	4	4,228	375	68	-19	-196
Net income	168	'	'	'	168	'	'	'
Total other comprehensive (loss) income, net	89	'	'	'	'	89	'	'
ESOP shares committed to be released (264,721 shares, 177,942 shares, and 177,942 shares in 2011, 2012 and 2013, respectively)	2	'	'	0	'	'	1	'
Stock-based compensation expense	11	'	'	11	'	'	'	'
Net tax expense from stock-based compensation	-1	'	'	-1	'	'	'	'
Exercise of stock options and restricted stock activity (932,173 shares, 786,670 shares, 1,320,324 shares in 2011, 2012, and 2013, respectively)	-2	'	'	-9	-5	'	'	12
Preferred stock dividends	-28	'	'	'	-28	'	'	'
Common stock dividends of $0.64 per share in 2011 and $0.32 per share in 2012 and 2013	-112	'	'	'	-112	'	'	'
Ending Balance at Dec. 31, 2012	4,927	338	4	4,231	399	157	-18	-184
Net income	295	'	'	'	295	'	'	'
Total other comprehensive (loss) income, net	-95	'	'	'	'	-95	'	'
ESOP shares committed to be released (264,721 shares, 177,942 shares, and 177,942 shares in 2011, 2012 and 2013, respectively)	2	'	'	'	0	'	1	'
Stock-based compensation expense	9	'	'	9	'	'	'	'
Net tax expense from stock-based compensation	-1	'	'	-1	'	'	'	'
Exercise of stock options and restricted stock activity (932,173 shares, 786,670 shares, 1,320,324 shares in 2011, 2012, and 2013, respectively)	-1	'	'	-4	-15	'	'	19
Preferred stock dividends	-30	'	'	'	-30	'	'	'
Common stock dividends of $0.64 per share in 2011 and $0.32 per share in 2012 and 2013	-112	'	'	'	-112	'	'	'
Ending Balance at Dec. 31, 2013	$4,993	$338	$4	$4,235	$536	$62	($17)	($165)

Consolidated_Statements_of_Cha1

Consolidated Statements of Changes in Stockholders' Equity (Unaudited) (Parenthetical) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Statement of Stockholders' Equity [Abstract]	'	'	'
Treasury stock, purchased	'	'	9,106,000
Proceeds from follow-on stock offerings, net of related expenses, shares	'	'	56,911,764
Shares issued for acquisition	'	'	93,984,715
Preferred stock, shares issued	'	'	14,000,000
ESOP shares committed to be released	177,942	177,942	264,721
Exercise of stock options and restricted stock activity, shares	1,320,324	786,670	932,173
Common stock, dividend per share	$0.32	$0.32	$0.64

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Cash flows from operating activities:	'	'	'
Net income	$295	$168	$174
Adjustments to reconcile net income to net cash provided by operating activities:	'	'	'
Amortization of fees and discounts, net	49	30	12
Provision for credit losses	105	92	58
Depreciation of premises and equipment	53	43	34
Amortization of intangibles	40	45	26
Gain on securities portfolio repositioning	0	-21	0
Origination of loans held for sale	-1,295	-1,504	-795
Proceeds from sales of loans held for sale	1,412	1,453	741
ESOP and stock based-compensation expense	11	13	11
Deferred income tax expense	5	34	1
Contributions to defined benefit pension plans	0	-112	0
(Increase) decrease in other assets	-5	-39	46
Increase (decrease) in other liabilities	46	-43	23
Net cash provided by operating activities	716	159	330
Cash flows from investing activities:	'	'	'
Proceeds from sales of securities available for sale	485	3,239	638
Proceeds from maturities of securities available for sale	196	242	480
Principal payments received on securities available for sale	1,124	2,108	1,401
Purchases of securities available for sale	-1,497	-6,273	-3,774
Principal payments received on securities held to maturity	868	481	423
Purchases of securities held to maturity	-636	0	-87
Purchases of Federal Home Loan Bank and Federal Reserve Bank common stock	-49	-62	-54
Purchase of bank owned life insurance	0	0	-35
Proceeds from surrender of bank owned life insurance	0	0	27
Net increase in loans and leases	-1,767	-1,814	-950
Acquisitions, net of cash and cash equivalents	0	7,703	-51
Purchases of premises and equipment	-67	-104	-69
Other, net	-32	53	47
Net cash (used in) provided by investing activities	-1,375	5,574	-2,006
Cash flows from financing activities:	'	'	'
Net (decrease) increase in deposits	-1,004	-1,645	839
Proceeds from short-term borrowings, net	1,839	775	730
Proceeds from long-term borrowings	0	0	864
Repayments of long-term borrowings	0	-5,127	-644
Purchases of treasury stock	0	0	-127
Issuances of preferred stock, net	0	0	338
Issuance of common stock in follow-on stock offerings, net	0	0	468
Dividends paid on noncumulative preferred stock	-30	-28	0
Dividends paid on common stock	-112	-112	-175
Other, net	-1	-1	6
Net cash provided by (used in) financing activities	692	-6,138	2,299
Net increase (decrease) in cash and cash equivalents	32	-406	623
Cash and cash equivalents at beginning of period	431	837	214
Cash and cash equivalents at end of period	463	431	837
Cash paid during the period for:	'	'	'
Income taxes	57	16	85
Interest expense	126	241	243
Acquisition of noncash assets and liabilities:	'	'	'
Assets acquired	0	2,408	9,073
Liabilities assumed	0	10,111	7,690
Other noncash activity:	'	'	'
Securities transferred from available for sale to held to maturity (at fair value)	3,001	0	1,994
Unsettled ACH transactions	0	0	140
Securities transferred from held to maturity to available for sale	$0	$861	$0

Summary_of_Significant_Account

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2013
Accounting Policies [Abstract]	'
Summary of Significant Accounting Policies	'
	Summary of Significant Accounting Policies
	First Niagara Financial Group, Inc. (the “Company”), a Delaware corporation, and its subsidiaries provide financial services to individuals and businesses in New York, Western and Eastern Pennsylvania, Connecticut, and Western Massachusetts. Through our wholly owned subsidiary, First Niagara Bank, N.A. (the “Bank”), a federally chartered national bank, we provide a full range of products and services through our retail consumer, commercial, business services, and wealth management operations, including retail banking, consumer and commercial lending, cash management, insurance and wealth management products.
	Our accounting and reporting policies conform to U.S. generally accepted accounting principles (“GAAP”) and general practices within the banking industry. Reclassifications of prior years’ amounts are made whenever necessary to conform to the current year’s presentation. The following is a description of our significant accounting policies:
	Principles of Consolidation
	Our Consolidated Financial Statements include the accounts of the Company and its subsidiaries. We have eliminated all significant intercompany balances in consolidation.
	Subsequent Events
	We reviewed subsequent events and determined that no further disclosures or measurements were required.
	Cash and Cash Equivalents
	For purposes of our Consolidated Statement of Cash Flows, cash and cash equivalents include cash and due from banks, money market investments, and federal funds sold which have an original term of less than three months.
	Investment Securities
	We have classified our investments in debt and equity securities as held to maturity or available for sale. We classify investment securities as held to maturity if we have the positive intent and ability to hold them to maturity. Held to maturity securities are reported at amortized cost. We classify investment securities not classified as held to maturity as available for sale, and report them at fair value with unrealized gains and losses, net of deferred taxes, reported in other comprehensive income as a separate component of stockholders’ equity.
	We are required to maintain an investment in common stock of the Federal Home Loan Bank (“FHLB”) of New York and Boston as well as the Federal Reserve Bank because our Bank is a member of the FHLB and the Federal Reserve System. We consider these stocks to be nonmarketable equity securities and carry them at cost.
	We conduct a quarterly review and evaluation of our investment securities portfolio to determine if any declines in fair value below amortized cost are other than temporary. In making this determination, we consider some or all of the following factors: the period of time the securities have been in an unrealized loss position, the percentage decline in fair value in comparison to the securities’ amortized cost, credit rating, the financial condition of the issuer and guarantor, where applicable, the delinquency or default rates of underlying collateral, credit enhancement, projected losses, level of credit loss, and projected cash flows. If we intend to sell a security with a fair value below amortized cost or if it is more likely than not that we will be required to sell such a security before recovery, we record an other than temporary impairment charge through current period earnings for the full decline in fair value below amortized cost. For debt securities that we do not intend to sell or it is more likely than not that we will not be required to sell before recovery, we record an other than temporary impairment charge through current period earnings for the amount of the valuation decline below amortized cost that is attributable to credit losses. The remaining difference between the debt security’s fair value and amortized cost (that is, decline in fair value not attributable to credit losses) is recognized in other comprehensive income.
	Our investment securities portfolio includes residential mortgage-backed securities and collateralized mortgage obligations. As the underlying collateral of each of these securities is comprised of a large number of similar residential mortgage loans for which prepayments are probable and the timing and amount of such prepayments can be reasonably estimated, we consider estimates of future principal prepayments of these underlying residential mortgage loans in the calculation of the constant effective yield used to apply the interest method for income recognition, with retroactive adjustments made as warranted.
	Purchases and sales of investment securities are recorded on trade date, with realized gains and losses on sales included in our Consolidated Statements of Income using the specific identification method. We amortize premiums and accrete discounts on our investment securities to interest income utilizing the interest method.
	Originated Loans and Leases
	Loans we originate and intend to hold in our portfolio are stated at the principal amount outstanding, adjusted for unamortized deferred fees and costs which we amortize to interest income over the expected life of the loan using the interest method. We discontinue accrual of interest on originated loans after payments become more than 90 days past due, or earlier if we do not expect the full collection of principal or interest, with the exception of credit cards. Credit cards are placed on nonaccrual status at 180 days past due. The delinquency status is based upon the contractual terms of the loans. We reverse all uncollected interest income that we previously recognized on nonaccrual loans. When we have doubt as to the collectibility of a loan’s principal, we apply interest payments to principal. With the exception of residential mortgage loans that are well secured and in the process of collection, cash receipts received on nonperforming impaired loans are first applied to the loan’s principal. Once the remaining principal balance has been collected in full, cash receipts are then applied as recoveries of any partially charged-off amount on the loan. Once a loan’s principal balance, including any previously charged-off amounts are collected in full, cash receipts are recorded as interest income. For residential mortgage loans, where the loan is both well secured and in the process of collection, we recognize interest income on a cash basis. Interest income on performing troubled debt restructurings, which are considered impaired loans, are applied in accordance with the terms of the modified loan.
	We return loans to accrual status when principal and interest payments are current, we expect full collectibility of principal and interest, and a consistent repayment record, generally six consecutive payments, has been demonstrated.
	We charge loans off against our allowance for loan losses when it becomes evident that we will not fully collect the balance of the loan. For business and commercial real estate loans, we record a charge off when it is determined that the collection of all or a portion of a loan may not be collected and the amount of that loss is reasonably estimable. For our consumer loans secured by real estate, including our residential mortgages, home equity loans and home equity lines of credit, we order broker price opinions (“BPOs”) at 90 days past due and record partial or full charge-offs based upon the results of such valuations by no later than 180 days past due. All other closed end consumer loans are charged off at 120 days past due and all other open ended consumer lines, including credit card loans, are charged off at 180 days past due.
	We consider a loan impaired when, based on current information, it is probable that we will be unable to collect all amounts of principal and interest due under the original terms of the agreement. Nonaccrual business and commercial real estate loans greater than $200 thousand are evaluated individually for impairment. Additionally, all loans modified in a troubled debt restructuring (“TDR”) are considered to be impaired, even if the principal balance is less than $200 thousand. We measure the impairment in these loans based on the present value of expected future cash flows discounted at the loan’s effective interest rate or, as a practical alternative, the loan’s observable market price or the fair value of the underlying collateral, if the loan is collateral dependent.
	At origination, a determination is made whether a loan will be held in our portfolio or is intended for sale in the secondary market. Loans that will be held in our portfolio are carried at amortized cost. Beginning in the second quarter of 2011, we elected the fair value option for substantially all residential mortgage loans held for sale as we believe the fair value measurement of such loans reduces certain timing differences in our Statement of Income and better aligns with our management of the portfolio from a business perspective. This loan by loan election is made at the time of origination and is irrevocable. Residential mortgage loans held for sale for which the fair value option has not been elected, are recorded at the lower of the aggregate cost or market value (“LOCOM”). For residential mortgage loans held for sale where we have elected the fair value option, any change in fair value subsequent to origination is recognized immediately in earnings in mortgage banking income. For residential mortgage loans held for sale that are recorded at LOCOM, we recognize any subsequent decreases in fair value in a valuation allowance through a charge to earnings at the time the decline in value occurs. We include gains and losses occurring during the holding period as well as those resulting from sales of our loans held for sale in mortgage banking income.
	Acquired Loans
	Loans that we acquired in acquisitions subsequent to January 1, 2009 were recorded at fair value with no carryover of the related allowance for loan losses at the time of acquisition. Determining the fair value of the loans involved estimating the amount and timing of principal and interest cash flows expected to be collected on the loans and discounting those cash flows at a market rate of interest.
	We have acquired loans in four separate acquisitions after January 1, 2009. For each acquisition, we reviewed all loans greater than $1 million and considered the following factors as indicators that such an acquired loan had evidence of deterioration in credit quality and was therefore in the scope of Accounting Standards Codification (“ASC”) 310-30 (Loans and Debt Securities Acquired with Deteriorated Credit Quality):

	•	Loans that were 90 days or more past due;

	•	Loans that had an internal risk rating of substandard or worse. Substandard is consistent with regulatory definitions and is defined as having a well defined weakness that jeopardizes liquidation of the loan;

	•	Loans that were classified as nonaccrual by the acquired bank at the time of acquisition; or

	•	Loans that had been previously modified in a troubled debt restructuring.

	Individual acquired loans determined to have evidence of deterioration in credit quality are accounted for individually in accordance with ASC 310-30. Any acquired loans that were not individually in the scope of ASC 310-30 because they did not meet the criteria above were either (i) pooled into groups of similar loans based on the borrower type, loan purpose, and collateral type and accounted for under ASC 310-30 by analogy or (ii) accounted for under ASC 310-20 (Nonrefundable Fees and Other Costs.)
	Based on the guidance included in the December 18, 2009 letter from the AICPA Depository Institutions Panel to the Office of the Chief Accountant of the SEC, we have made an accounting policy election to apply ASC 310-30 by analogy to qualifying acquired pools of loans that (i) were acquired in a business combination or asset purchase, (ii) resulted in recognition of a discount attributable, at least in part, to credit quality; and (iii) were not subsequently accounted for at fair value.
	Acquired loans accounted for under ASC 310-30
	The excess of expected cash flows from acquired loans over the estimated fair value of acquired loans at acquisition is referred to as the accretable discount and is recognized into interest income over the remaining life of the acquired loans using the interest method. The difference between contractually required payments at acquisition and the cash flows expected to be collected at acquisition is referred to as the nonaccretable discount. The nonaccretable discount represents estimated future credit losses expected to be incurred over the life of the acquired loans. Subsequent decreases to the expected cash flows require us to evaluate the need for an addition to the allowance for loan losses. Subsequent improvements in expected cash flows result in the reversal of a corresponding amount of the nonaccretable discount which we then reclassify as accretable discount that is recognized into interest income over the remaining life of the loan using the interest method. Our evaluation of the amount of future cash flows that we expect to collect takes into account actual credit performance of the acquired loans to date and our best estimates for the expected lifetime credit performance of the loans using currently available information. Charge-offs on acquired loans would be first applied to the nonaccretable discount portion of the fair value adjustment. To the extent that we experience a deterioration in credit quality in our expected cash flows subsequent to the acquisition of the loans, an allowance for loan losses would be established based on our estimate of future credit losses over the remaining life of the loans.

	In accordance with ASC 310-30, recognition of income is dependent on having a reasonable expectation about the timing and amount of cash flows expected to be collected. We perform such an evaluation on a quarterly basis on both our acquired loans individually accounted for under ASC 310-30 and those in pools accounted for under ASC 310-30 by analogy.

	Cash flows for acquired loans individually accounted for under ASC 310-30 are estimated on a quarterly basis. Based on this evaluation, a determination is made as to whether or not we have a reasonable expectation about the timing and amount of cash flows. Such an expectation includes cash flows from normal customer repayment, foreclosure or other collection efforts. Cash flows for acquired loans accounted for on a pooled basis under ASC 310-30 by analogy are also estimated on a quarterly basis. For residential real estate, home equity and other consumer loans, cash flow loss estimates are calculated by a vintage and FICO based model which incorporates a projected forward loss curve. For commercial loans, lifetime loss rates are assigned to each pool with consideration given for pool make-up, including risk rating profile. Lifetime loss rates are developed from internally generated loss data and are applied to each pool.

	To the extent that we cannot reasonably estimate cash flows, interest income recognition is discontinued. The unit of account for loans in pools accounted for under ASC 310-30 by analogy is the pool of loans. Accordingly, as long as we can reasonably estimate cash flows for the pool as a whole, accretable yield on the pool is recognized and all individual loans within the pool - even those more than 90 days past due - would be considered to be accruing interest in our financial statement disclosures, regardless of whether or not we expected to collect any principal or interest cash flows on an individual loan 90 days or more past due.
	Allowance for Loan Losses
	We determined our allowance for loan losses by portfolio segment, which consists of commercial loans and consumer loans. Our commercial loan portfolio includes both business and commercial real estate loans. Our consumer loan portfolio includes residential real estate, home equity, indirect auto, credit card and other consumer loans. We further segregate these portfolios between loans which are accounted for under the amortized cost method (referred to as “originated” loans) and loans acquired (referred to as “acquired” loans), as acquired loans were originally recorded at fair value, which included an estimate of lifetime credit losses, resulting in no carryover of the related allowance for loan losses.
	Originated loans
	We establish our allowance for loan losses through a provision for credit losses. The level of the allowance for loan losses is based on our evaluation of the credit quality of our loan portfolio. This evaluation, which includes a review of loans on which full collectability may not be reasonably assured, considers, among other matters, the estimated fair value of the underlying collateral, economic conditions, historical net loan loss experience, and other factors that warrant recognition in determining our allowance for loan losses. We continue to monitor and modify the level of our allowance for loan losses to ensure it is adequate to cover losses inherent in our loan portfolio.
	For our originated loans, our allowance for loan losses consists of the following elements: (i) valuation allowances based on net historical loan loss experience for similar loans with similar inherent risk characteristics and performance trends, adjusted, as appropriate, for qualitative risk factors specific to respective loan types; and (ii) specific valuation allowances based on probable losses on specifically identified impaired loans.
	Impaired loans
	For our originated loans, when current information and events indicate that it is probable that we will be unable to collect all amounts of principal and interest due under the original terms of a business or commercial real estate loan greater than $200 thousand, such loan will be classified as impaired. Additionally, all loans modified in a TDR are considered impaired. The need for specific valuation allowances are determined for impaired loans and recorded as necessary. For impaired loans, we consider the fair value of the underlying collateral, less estimated costs to sell, if the loan is collateral dependent, or we use the present value of estimated future cash flows in determining the estimates of impairment and any related allowance for loan losses for these loans. Confirmed losses are charged off immediately. Prior to a loan becoming impaired, we typically would obtain an appraisal through our internal loan grading process to use as the basis for the fair value of the underlying collateral.
	Commercial loan portfolio
	We estimate the allowance for our commercial loan portfolio by applying a historic loss rate to loans based on their type and loan grade. This amount is then adjusted, as necessary, for qualitative considerations to reflect changes in underwriting, market or industry conditions, or based on changes in trends in the composition of the portfolio, including risk composition, seasoning, and underlying collateral. Our loan grading system is described in “Management’s Discussion and Analysis of Financial Condition and Results of Operations” under the heading “Credit Risk.”
	Consumer loan portfolio
	We estimate the allowance for loan losses for our consumer loan portfolio by estimating the amount of loans that will eventually default based on their current delinquency severity. We then apply a loss rate to the amount of loans that we predict will default based on our historical net loss experience. This amount is then adjusted, as necessary, for qualitative considerations to reflect changes in underwriting, market or industry conditions or based on changes in trends in the composition of the portfolio, including risk composition, seasoning, and underlying collateral. We obtain and review refreshed FICO scores on a quarterly basis, and trends are evaluated for consideration as a qualitative adjustment to the allowance. Other qualitative considerations include, but are not limited to, the evaluation of trends in property values, building permits and unemployment.
	Acquired Loans
	Acquired loans accounted for under ASC 310-30 (including those accounted for under ASC 310-30 by analogy)
	For our acquired loans accounted for under ASC 310-30, our allowance for loan losses is estimated based upon our expected cash flows for these loans. To the extent that we experience a deterioration in borrower credit quality resulting in a decrease in our expected cash flows subsequent to the acquisition of the loans, an allowance for loan losses would be established based on our estimate of future credit losses over the remaining life of the loans.
	Acquired loans accounted for under ASC 310-20
	We establish our allowance for loan losses through a provision for credit losses based upon an evaluation process that is similar to our evaluation process used for originated loans. This evaluation, which includes a review of loans on which full collectability may not be reasonably assured, considers, among other matters, the estimated fair value of the underlying collateral, economic conditions, historical net loan loss experience, carrying value of the loans, which includes the remaining net purchase discount or premium, and other factors that warrant recognition in determining our allowance for loan losses.
	Premises and Equipment
	Our premises and equipment are carried at cost, net of accumulated depreciation and amortization. We compute depreciation on the straight-line method over the estimated useful lives of the assets. We amortize our leasehold improvements on the straight-line method over the lesser of the life of the improvements or the lease term. We generally depreciate buildings over a period of 20 to 39 years, furniture and equipment over a period of 3 to 10 years, and capital leases over the lesser of the useful life or the respective lease term.
	Goodwill and Intangible Assets
	We record the excess of the cost of acquired entities over the fair value of identifiable tangible and intangible assets acquired less the fair value of liabilities assumed as goodwill. We amortize our acquired identifiable intangible assets with definite useful economic lives over their useful economic life utilizing an accelerated amortization method. On a periodic basis, we assess whether events or changes in circumstances indicate that the carrying amounts of our core deposit and other intangible assets may be impaired. We do not amortize goodwill or any acquired identifiable intangible assets with an indefinite useful economic life, but we review them for impairment on an annual basis, or when events or changes in circumstances indicate that the carrying amounts may be impaired. Goodwill is reviewed for impairment at the reporting unit level. We define a reporting unit as a distinct, separately identifiable component of one of our operating segments for which complete, discrete financial information is available and reviewed regularly by that segment’s management.
We have the option to first assess qualitative factors to determine whether there are events or circumstances that exist that make it more likely than not that the fair value of the reporting unit is less than its carrying amount (Step 0). If it is more likely than not that the fair value of the reporting unit is less than its carrying amount, or if we choose to bypass the qualitative assessment, we proceed to compare each reporting unit's fair value to carrying value to identify potential impairment (Step 1). If the estimated fair value of a reporting unit exceeds its carrying amount, goodwill of the reporting unit is not considered impaired. However, if the carrying amount of the reporting unit were to exceed its estimated fair value, a second step (Step 2) would be performed that would compare the implied fair value of the reporting unit's goodwill with the carrying amount of the goodwill for the reporting unit. The implied fair value of goodwill is determined in the same manner as goodwill that is recognized in a business combination. Significant judgment and estimates are involved in estimating the fair value of the assets and liabilities of the reporting units.
We perform our annual impairment review of goodwill on November 1 of each year utilizing valuation methods we believe appropriate, given the availability and applicability of market-based inputs for those methods.
Derivative Instruments
We use interest rate swaps to manage our interest rate risk. We also act as an interest rate swap counterparty for certain commercial customers, and manage the interest rate risk of these positions by entering into offsetting interest rate swap agreements with third parties. Interest rate swaps are recorded on our Consolidated Statements of Condition as either an asset or liability at estimated fair value and recognition of the changes in fair value in the income statement depends upon whether the interest rate swaps are in a designated hedging relationship. The change in the fair value of interest rate swaps designated as fair value hedges, including both the effective and ineffective portions, is recognized in earnings. These amounts are offset by the change in fair value of the hedged item, which is also recognized in earnings. The gain or loss associated with the effective portion of our cash flow hedges is recognized in other comprehensive income and is subsequently reclassified into earnings in the period during which the hedged forecasted transactions affects earnings. The gain or loss associated with the ineffective portion of our cash flow hedges is recognized immediately in earnings. We formally document our risk management objectives, strategy, and the relationship between the hedging instrument and the hedged items. We evaluate the effectiveness of the hedge relationship both at inception of the hedge and on an ongoing basis. If the interest rate swap is not designated in a hedge relationship, gains or losses reflecting changes in fair value are recorded in earnings.
Employee Benefits
We maintain an employer sponsored 401(k) plan where participants may make contributions in the form of salary deferrals and we provide matching contributions in accordance with the terms of the plan. Contributions due under the terms of our defined contribution plans are accrued as earned by employees.
We also maintain noncontributory, qualified, defined benefit pension plans for certain employees who meet age and service requirements. We provide post-retirement benefits, principally health care and group life insurance, to employees who meet certain age and service requirements. We have frozen all benefit participation in our pension and post-retirement plans. Pension plans that we acquired in connection with our previous whole-bank acquisitions were frozen prior to or shortly after the completion of the transactions. The actuarially determined pension benefit in the form of a life annuity is based on the employee’s combined years of service, age, and compensation. The cost of our pension plan is based on actuarial estimates of current and future benefits for employees and is charged to current operating expenses.
We recognize an asset for a plan’s overfunded status or a liability for a plan’s underfunded status in our financial statements. We report changes in the funded status of our pension and postretirement plans as a component of other comprehensive income, net of applicable taxes, in the year in which changes occur.
We measure our plans’ assets and obligations that determine its future funded status as of December 31st each year.
Stock-Based Compensation
We maintain various long-term incentive stock benefit plans under which we grant stock options, restricted stock awards, and restricted stock units to certain key employees and directors. We recognize compensation expense in our income statement over the requisite service period, based on the grant-date fair value of the award. The fair values of stock options are estimated using the Black-Scholes option pricing model. For restricted stock awards and units, we recognize compensation expense on a straight-line basis over the vesting period for the fair value of the award, measured at the grant date.
Income Taxes
We account for income taxes under the asset and liability method. Our deferred tax assets and liabilities are reflected at currently enacted income tax rates applicable to the periods in which we expect the deferred tax assets or liabilities to be realized or settled. Deferred tax assets are recognized only to the extent that it is probable that sufficient taxable profit will be available against which those unused tax losses, unused tax credits or deductible temporary differences can be utilized. As changes in tax laws or rates are enacted, we adjust our deferred tax assets and liabilities through income tax expense. We recognize penalties and accrued interest related to unrecognized tax benefits in income tax expense. Federal and State tax credits are accounted for as a reduction of income tax expense.
Earnings per Share
We compute earnings per common share (“EPS”) in accordance with the two-class method, which requires that our unvested restricted stock awards that contain nonforfeitable rights to dividends be treated as participating securities in the computation of EPS pursuant to the two-class method. The two-class method is an earnings allocation that determines EPS for each class of common stock and participating security. Our basic EPS is computed by dividing net income allocable to common stockholders by the weighted average number of our common shares outstanding for the period. Our diluted EPS reflects the potential dilution that could occur if securities or other contracts to issue common stock were exercised or converted into common stock or resulted in the issuance of common stock that then shared in our earnings. Unallocated common shares held by the Employee Stock Ownership Plan (“ESOP”) are not included in the weighted-average number of common shares outstanding for either basic or diluted earnings per share calculations.
Investment and Fiduciary Services
Assets that we hold in a fiduciary or agency capacity for our customers are not included in our accompanying Consolidated Statements of Condition, since these assets are not our assets and we are not the primary beneficiary. We recognize fee income from the management of these assets using the accrual method.
Use of Estimates
We have made a number of estimates and assumptions relating to the reporting of assets and liabilities and disclosure of contingent assets and liabilities in order to prepare these financial statements in conformity with GAAP. The estimates and assumptions that we deem to be critical involve our accounting policies relating to our valuation of our investment securities, prepayment assumptions on our collateralized mortgage obligations and mortgage-backed securities, the accounting treatment and valuation of our acquired loans, adequacy of our allowance for loan losses, and the analysis of the carrying value of goodwill for impairment. These estimates and assumptions are based on management’s best estimates and judgment and we evaluate them on an ongoing basis using historical experience and other factors, including the current economic environment. We adjust our estimates and assumptions when facts and circumstances dictate. As future events cannot be determined with precision, actual results could differ significantly from our estimates.
Accounting Standards Adopted in 2013
In December 2011 and January 2013, the Financial Accounting Standards Board (“FASB”) announced new disclosure requirements for offsetting arrangements. The new rules seek to enhance the comparability of financial statements for users by providing information about offsetting and related arrangements. The rules require entities to disclose gross amounts subject to right of set-off, amounts set-off, net amounts presented in the balance sheet, amounts subject to master netting agreements that have not been offset including related amounts of financial collateral. The requirements became effective for us beginning January 1, 2013 and did not have a significant impact on our financial statements.
In February 2013, the FASB issued guidance requiring an entity to provide information about the amounts reclassified out of accumulated other comprehensive income (AOCI) by component. The objective is to improve the reporting of reclassifications out of AOCI for significant amounts reclassified if the amount is required under US GAAP to be reclassified to net income in its entirety in the same reporting period. For amounts not required to be reclassified in their entirety to net income, an entity is required to cross-reference to other disclosures that provide detail about those amounts. The requirements became effective for us beginning January 1, 2013 and did not have a significant impact on our financial statements.
In July 2013, the FASB issued guidance to permit the Federal Funds Effective Swap Rate (OIS) to be used as a U.S. benchmark interest rate for hedge accounting purposes under Topic 815, Derivatives and Hedging. The amendment becomes effective prospectively for new or redesignated interest rate risk hedging relationships entered into on or after July 17, 2013. Given the elective nature of hedge accounting, the prospective nature of the guidance, and our objective to minimize ineffectiveness when hedge accounting is elected, this did not have a significant impact on our financial statements.
Accounting Standards Not Yet Required to be Adopted as of December 31, 2013
In February 2013, the FASB issued guidance for the recognition, measurement, and disclosure of obligations resulting from joint and several liability arrangements for which the total amount of the obligation is fixed at the reporting date. Examples of obligations within the scope of the guidance include debt arrangements, other contractual obligations, and settled litigation and judicial rulings. The guidance becomes effective for us on January 1, 2014 and we do not expect it will have a significant impact on our financial statements.
In June 2013, the FASB released amended guidance to improve the accounting for determining whether an entity is an investment company. The amendments change the approach to assessing investment company status and provide two required fundamental characteristics and five typical characteristics for determining whether an entity is an investment company. The guidance becomes effective for us on January 1, 2014 and we do not expect it will have a significant impact on our financial statements.
In July 2013, the FASB issued guidance to reduce diversity in practice related to the financial statement presentation of an unrecognized tax benefit when a net operating loss carryforward, a similar tax loss, or a tax credit carryforward exists. Some entities present the unrecognized tax benefit as a liability and other entities present the unrecognized tax benefit as a reduction to a deferred tax asset. The guidance requires an unrecognized tax benefit to be presented in the financial statements as a reduction to a deferred tax asset, and becomes effective for us on January 1, 2014. We do not expect this to have a significant impact on our financial statements.
In January 2014, the FASB issued guidance on accounting for investments by a reporting entity in flow-through limited liability entities that manage or invest in affordable housing projects that qualify for the low-income housing tax credit. The low-income housing tax credit program is designed to encourage private capital investment in the construction and rehabilitation of low-income housing. The guidance becomes effective for us on January 1, 2015 with early adoption permitted. We have not decided on whether to early adopt and we do not expect this to have a significant impact on our financial statements.
In January 2014, the FASB issued guidance on when a creditor should reclassify a collateralized mortgage loan such that the loan should be derecognized and the collateral asset recognized. The objective of the guidance is to reduce diversity by clarifying when an in substance repossession or foreclosure occurs, that is, when a creditor should be considered to have received physical possession of residential real estate property collateralizing a consumer mortgage loan such that the loan receivable should be derecognized and the real estate property recognized. The guidance becomes effective for us on January 1, 2015 with early adoption permitted. We have not decided on whether to early adopt and we do not expect this to have a significant impact on our financial statements.

Acquisitions

Acquisitions	12 Months Ended
	Dec. 31, 2013
Business Combinations [Abstract]	'
Business Combination Disclosure	'
	Acquisitions
	HSBC Bank Branches
	On May 18, 2012, the Bank acquired 137 full-service branches from HSBC Bank USA, National Association (“HSBC”) and its affiliates (the “HSBC Branch Acquisition”) in the Buffalo, Rochester, Syracuse, Albany, Downstate New York and Connecticut banking markets, as contemplated by the Purchase and Assumption Agreement, dated July 30, 2011, as amended and restated as of May 17, 2012. The purchase price, net of deposit premiums received of $122 million upon closing of the assignments from HSBC to KeyBank N.A. (“Key”), Five Star Bank (“Five Star”), and Community Bank System, Inc. (“Community Bank”), was $772 million. We also acquired certain wealth management relationships which included approximately $2.5 billion of assets under management. While the HSBC Branch Acquisition is considered a purchase of a business for accounting purposes, pro forma income statement information is not presented because the HSBC Branch Acquisition does not represent the acquisition of a business which has continuity both before and after the acquisition.
	The following table summarizes the estimated fair values of the assets acquired and liabilities assumed at the date of acquisition:


	Recognized amounts of identifiable assets acquired and (liabilities assumed), at fair value:
	Cash and cash equivalents (1)	$	7,360

	Loans	1,600

	Core deposit and other intangibles	85

	Other assets	72

	Total assets acquired	9,117


	Deposits(2)	(9,855		)
	Other liabilities	(33		)
	Total liabilities assumed	(9,887		)
	Goodwill	$	770


	(1)	Amount is net of $772 million deposit premium paid to HSBC.

	(2)	Deposits reported exclude $0.5 billion in municipal deposits that were subject to a price concession.
	In connection with the regulatory process for the HSBC Branch Acquisition, we agreed with the U.S. Department of Justice to assign our purchase rights related to 26 HSBC branches in the Buffalo area. In January 2012, we entered into an agreement with Key assigning our right to purchase the 26 HSBC Buffalo branches as well as 11 additional HSBC branches in the Rochester area. On July 13, 2012, Key acquired these 37 branches with a total of $2.0 billion in deposits and approximately $256.5 million in loans, and paid us a deposit premium of $91.5 million.
	In January 2012, we also entered into separate agreements with Five Star Bank and Community Bank for them to purchase seven First Niagara branches and 20 HSBC branches, for which we had assigned our purchase rights.
	On June 22, 2012, Five Star acquired four First Niagara branches with $58.6 million in loans, assumed approximately $129.3 million in deposits, and paid us a deposit premium of $5.3 million. On August 17, 2012, Five Star acquired four of the HSBC branches, assumed approximately $18 million in loans, $157.2 million in deposits, and paid us a deposit premium of $6.5 million.
	On July 20, 2012, Community Bank acquired the remaining 16 HSBC branches, with a total of $107.0 million in loans, $696.6 million in deposits, and paid us a deposit premium of $23.8 million. On September 7, 2012, Community Bank acquired three First Niagara branches, assumed approximately $55.4 million in loans, $100.8 million in deposits, and paid us a deposit premium of $3.1 million.
	We estimated the fair value of loans acquired from HSBC by utilizing a methodology wherein similar loans were aggregated into pools. Cash flows for each pool were determined by estimating future credit losses and the rate of prepayments. Projected monthly cash flows were then discounted to present value based on a market rate for similar loans. There was no carryover of HSBC’s allowance for loan losses associated with the loans we acquired as the loans were initially recorded at fair value.
	Information about the acquired HSBC loan portfolio as of May 18, 2012 is in the following table, and excludes home equity lines of credit, credit card, and any other line of credit:


	Contractually required principal and interest at acquisition	$	758

	Contractual cash flows not expected to be collected (nonaccretable discount)	(16		)
	Expected cash flows at acquisition	742

	Interest component of expected cash flows (accretable discount)	(91		)
	Fair value of acquired loans (excluding lines of credit)	$	651

	The $41 million core deposit intangible asset recognized as part of the HSBC Branch Acquisition is being amortized over its estimated useful life of approximately three years using an accelerated method and the $9 million wealth management and $34 million purchased credit card relationships intangibles are being amortized over their useful lives of 10 years using an accelerated method. The goodwill, which is not amortized for book purposes, was assigned to our banking segment and is deductible for tax purposes.
	The fair value of savings and transaction deposit accounts acquired from HSBC was assumed to approximate the carrying value as these accounts have no stated maturity and are payable on demand. Certificates of deposit were valued by projecting out the expected cash flows based on the remaining contractual terms of the certificate of deposit. These cash flows were discounted based on a market rate for a certificate of deposit with a corresponding remaining maturity.
	During the quarter ended March 31, 2013, we recorded a $36 million reduction to our goodwill balance related to the establishment of deferred tax assets in connection with the HSBC Branch Acquisition and our National City Bank branch acquisition.
	Direct costs related to the HSBC Branch Acquisition were expensed as incurred and amounted to $178 million for the year ended December 31, 2012. There were no such costs during the year ended December 31, 2013.

Investment_Securities

Investment Securities	12 Months Ended
	Dec. 31, 2013
Investments, Debt and Equity Securities [Abstract]	'
Investment Securities	'
	Investment Securities
	The amortized cost, gross unrealized gains and losses, and fair value of our investment securities are as follows at December 31:


		Amortized			Unrealized			Unrealized			Fair
	2013	cost			gains			losses			value
	Investment securities available for sale:
	Debt securities:
	States and political subdivisions	$	516		$	14		$	—		$	529

	U.S. Treasury	20			—			—			20

	U.S. government agencies	4			—			—			4

	U.S. government sponsored enterprises	302			7			(1		)	308

	Corporate	859			19			(10		)	868

	Trust preferred securities	4			—			—			4

	Total debt securities	1,705			40			(12		)	1,734

	Mortgage-backed securities:
	Residential mortgage-backed securities:
	Government National Mortgage Association	41			1			(2		)	40

	Federal National Mortgage Association	134			5			—			139

	Federal Home Loan Mortgage Corporation	154			5			—			159

	Collateralized mortgage obligations:

	Federal National Mortgage Association	797			—			(36		)	761

	Federal Home Loan Mortgage Corporation	396			—			(17		)	379

	Non-agency issued	12			1			—			13

	Total collateralized mortgage obligations	1,205			1			(54		)	1,152

	Total residential mortgage-backed securities	1,534			12			(56		)	1,490

	Commercial mortgage-backed securities, non-agency issued	1,759			74			(2		)	1,831

	Total mortgage-backed securities	3,294			85			(58		)	3,321

	Collateralized loan obligations, non-agency issued	1,392			40			(2		)	1,431

	Asset-backed securities collateralized by:
	Student loans	306			6			—			312

	Credit cards	73			—			(1		)	73

	Auto loans	331			4			—			335

	Other	186			1			(1		)	186

	Total asset-backed securities	896			11			(2		)	905

	Other	33			1			—			33

	Total securities available for sale	$	7,319		$	178		$	(74	)	$	7,423

Investment securities held to maturity:
Debt securities, U.S. government agencies	$	5		$	—		$	—		$	5

Residential mortgage-backed securities:
Government National Mortgage Association	17			—			—			17

Federal National Mortgage Association	146			—			(3		)	143

Federal Home Loan Mortgage Corporation	81			—			(1		)	81

Collateralized mortgage obligations:
Government National Mortgage Association	1,713			26			(12		)	1,727

Federal National Mortgage Association	1,074			—			(47		)	1,027

Federal Home Loan Mortgage Corporation	1,007			12			(30		)	989

Total collateralized mortgage obligations	3,793			39			(90		)	3,742

Total residential mortgage-backed securities	4,037			40			(94		)	3,983

Total securities held to maturity	$	4,042		$	40		$	(94	)	$	3,988



	Amortized			Unrealized			Unrealized			Fair
2012	cost			gains			losses			value
Investment securities available for sale:
Debt securities:
States and political subdivisions	$	587		$	21		$	—		$	608

U.S. Treasury	20			1			—			21

U.S. government agencies	5			—			—			5

U.S. government sponsored enterprises	390			13			—			404

Corporate	812			28			(3		)	837

Trust preferred securities	16			—			(1		)	14

Total debt securities	1,830			63			(5		)	1,889

Mortgage-backed securities:
Residential mortgage-backed securities:
Government National Mortgage Association	68			2			—			70

Federal National Mortgage Association	394			20			—			414

Federal Home Loan Mortgage Corporation	343			12			—			355

Collateralized mortgage obligations:
Government National Mortgage Association	1,060			31			—			1,091

Federal National Mortgage Association	1,460			15			(1		)	1,474

Federal Home Loan Mortgage Corporation	1,036			11			—			1,047

Non-agency issued	60			2			—			61

Total collateralized mortgage obligations	3,617			58			(1		)	3,674

Total residential mortgage-backed securities	4,422			93			(1		)	4,513

Commercial mortgage-backed securities, non-agency issued	1,930			132			(1		)	2,060

Total mortgage-backed securities	6,351			225			(3		)	6,573

Collateralized loan obligations, non-agency issued	1,510			35			(1		)	1,545

Asset-backed securities collateralized by:
Student loans	378			12			—			390

Credit cards	74			1			—			75

Auto loans	367			6			—			372

Other	118			1			—			119

Total asset-backed securities	936			20			—			956

Other	31			1			—			31

Total securities available for sale	$	10,658		$	344		$	(8	)	$	10,994

Investment securities held to maturity:
Residential mortgage-backed securities:
Government National Mortgage Association	$	6		$	—		$	—		$	6

Federal National Mortgage Association	5			—			—			5

Federal Home Loan Mortgage Corporation	7			—			—			7

Collateralized mortgage obligations:
Government National Mortgage Association	1,006			49			—			1,055

Federal National Mortgage Association	18			1			—			19

Federal Home Loan Mortgage Corporation	257			24			—			281

Total collateralized mortgage obligations	1,282			73			—			1,355

Total securities held to maturity	$	1,300		$	74		$	—		$	1,374

The table below details certain information regarding our investment securities that were in an unrealized loss position at the dates indicated by the length of time those securities were in a continuous loss position:


	Less than 12 months									12 months or longer							Total
	Fair			Unrealized						Fair			Unrealized				Fair		Unrealized
31-Dec-13	value			losses			Count			value			losses			Count	value		losses			Count
Investment securities available for sale:
Debt securities:
States and political subdivisions	$	13		$	—		25			$	3		$	—		7	$	16	$	—		32

U.S. government agencies	1			—			5			2			—			2	3		—			7

U.S. government sponsored enterprises	70			(1		)	6			—			—			—	70		(1		)	6

Corporate	228			(8		)	164			74			(2		)	23	302		(10		)	187

Trust preferred securities	4			—			1			—			—			—	4		—			1

Total debt securities	315			(9		)	201			79			(2		)	32	394		(12		)	233

Mortgage-backed securities:
Residential mortgage-backed securities:
Government National Mortgage Association	—			—			—			19			(2		)	6	19		(2		)	6

Federal National Mortgage Association	—			—			3			—			—			3	1		—			6

Collateralized mortgage obligations:

Federal National Mortgage Association	744			(36		)	41			—			—			—	744		(36		)	41

Federal Home Loan Mortgage Corporation	361			(17		)	19			—			—			—	361		(17		)	19

Non-agency issued	1			—			3			—			—			—	1		—			3

Total collateralized mortgage obligations	1,106			(54		)	63			—			—			—	1,106		(54		)	63

Total residential mortgage-backed securities	1,106			(54		)	66			19			(2		)	9	1,125		(56		)	75

Commercial mortgage-backed securities, non-agency issued	158			(2		)	15			12			—			3	170		(2		)	18

Total mortgage-backed securities	1,264			(56		)	81			32			(2		)	12	1,296		(58		)	93

Collateralized loan obligations, non-agency issued	261			(2		)	28			3			—			1	264		(2		)	29

Asset-backed securities collateralized by:
Student loans	67			—			8			—			—			—	67		—			8

Credit card	36			(1		)	4			—			—			—	36		(1		)	4

Auto loans	25			—			5			—			—			—	25		—			5

Other	72			(1		)	11			—			—			—	72		(1		)	11

Total asset-backed securities	200			(2		)	28			—			—			—	200		(2		)	28

Other	14			—			3			8			—			2	22		—			5

Total securities available for sale in an unrealized loss position	$	2,054		$	(69	)	341			$	122		$	(5	)	47	$	2,176	$	(74	)	388




	Less than 12 months									12 months or longer							Total
	Fair			Unrealized						Fair			Unrealized				Fair		Unrealized
31-Dec-13	value			losses			Count			value			losses			Count	value		losses			Count
Investment securities held to maturity:
Debt securities, U.S. government agencies	$	5		$	—		1			$	—		$	—		—	$	5	$	—		1

Residential mortgage-backed securities:
Government National Mortgage Association	11			—			4			—			—			—	11		—			4

Federal National Mortgage Association	119			(3		)	30			—			—			—	119		(3		)	30

Federal Home Loan Mortgage Corporation	59			(1		)	15			—			—			—	59		(1		)	15

Collateralized mortgage obligations:
Government National Mortgage Association	520			(12		)	58			—			—			—	520		(12		)	58

Federal National Mortgage Association	1,011			(47		)	59			—			—			—	1,011		(47		)	59

Federal Home Loan Mortgage Corporation	629			(30		)	35			22			(1		)	1	652		(30		)	36

Total collateralized mortgage obligations	2,160			(89		)	152			22			(1		)	1	2,182		(90		)	153

Total residential mortgage-backed securities	2,348			(94		)	201			22			(1		)	1	2,371		(94		)	202

Total securities held to maturity in an unrealized loss position	$	2,353		$	(94	)	202			$	22		$	(1	)	1	$	2,376	$	(94	)	203



	Less than 12 months									12 months or longer							Total
	Fair			Unrealized						Fair			Unrealized				Fair		Unrealized
31-Dec-12	value			losses			Count			value			losses			Count	value		losses			Count
Investment securities available for sale:
Debt securities:
States and political subdivisions	$	21		$	—		42			$	4		$	—		5	$	26	$	—		47

U.S. government agencies	—			—			—			2			—			2	2		—			2

Corporate	92			(2		)	27			44			(1		)	2	136		(3		)	29

Trust preferred securities	1			—			1			13			(1		)	6	14		(1		)	7

Total debt securities	115			(2		)	70			64			(2		)	15	178		(5		)	85

Mortgage-backed securities:
Residential mortgage-backed securities:
Government National Mortgage Association	23			—			6			—			—			—	23		—			6

Federal National Mortgage Association	1			—			7			—			—			2	2		—			9

Collateralized mortgage obligations:
Federal National Mortgage Association	232			(1		)	12			—			—			—	232		(1		)	12

Federal Home Loan Mortgage Corporation	118			—			6			—			—			—	118		—			6

Non-agency issued	—			—			—			4			—			1	4		—			1

Total collateralized mortgage obligations	350			(1		)	18			4			—			1	354		(1		)	19

Total residential mortgage-backed securities	374			(1		)	31			4			—			3	379		(1		)	34

Commercial mortgage-backed securities, non-agency issued	30			(1		)	5			32			(1		)	4	61		(1		)	9

Total mortgage-backed securities	404			(2		)	36			36			(1		)	7	440		(3		)	43

Collateralized loan obligations, non-agency issued	168			(1		)	25			—			—			—	168		(1		)	25

Asset-backed securities collateralized by:
Student loans	2			—			1			26			—			1	28		—			2

Credit cards	6			—			2			—			—			—	6		—			2

Auto loans	42			—			7			—			—			—	42		—			7

Other	5			—			2			—			—			1	5		—			3

Total asset-backed securities	54			—			12			26			—			2	80		—			14

Other	—			—			—			8			—			3	8		—			3

Total securities available for sale in an unrealized loss position	$	741		$	(5	)	143			$	134		$	(3	)	27	$	874	$	(8	)	170

Investment securities held to maturity:
Residential mortgage-backed securities:
Government National Mortgage Association	$	2		$	—		1			$	—		$	—		—	$	2	$	—		1

Collateralized mortgage obligations:
Government National Mortgage Association	23			—			2			—			—			—	23		—			2

Total securities held to maturity in an unrealized loss position	$	25		$	—		3			$	—		$	—		—	$	25	$	—		3

We have assessed our securities that were in an unrealized loss position at December 31, 2013 and 2012 and determined that any decline in fair value below amortized cost was temporary.
For our CLOs subject to the Volcker Rule in an unrealized loss position, we believe it is more likely than not that we will be able to hold these securities to recovery. While there may be additional regulatory guidance, similar to the interim final rule issued on January 14, 2014 that provided relief to banks to hold certain Trust Preferred Collateralized Debt Obligations, or a legislative ruling that, if they occur, would enable us to continue to hold the CLO securities under the Volcker Rule, we may be able to develop structural solutions that can be applied to our CLO securities to bring them into compliance with the final Volcker Rule.
In making this determination for the remaining portfolio, we considered the following factors: the period of time the securities were in an unrealized loss position, the percentage decline in comparison to the securities’ amortized cost, credit rating, the financial condition of the issuer and guarantor, where applicable, the delinquency or default rates of underlying collateral, projected collateral losses, projected cash flows and credit enhancement. If the level of credit enhancement is sufficient based on our expectations of future collateral losses, we conclude that we will receive all of the originally scheduled cash flows. If the present value of the cash flows indicates that we should not expect to recover the amortized cost basis of the security, we would consider the security to be other than temporarily impaired and write down the credit component of the unrealized loss through a charge to current period earnings. We do not intend to sell these securities in an unrealized loss position and it is not more likely than not that we will be required to sell these securities before the recovery of their amortized cost bases, which may be at maturity.
Scheduled contractual maturities of our investment securities were as follows at December 31, 2013:


	Amortized cost			Fair value
Debt securities:
Within one year	$	228		$	229

After one year through five years	875			902

After five years through ten years	592			592

After ten years	16			15

Total debt securities	1,710			1,739

Mortgage-backed securities	7,331			7,304

Collateralized loan obligations	1,392			1,431

Asset-backed securities	896			905

Other	33			33

	$	11,362		$	11,411

While the contractual maturities of our mortgage-backed securities, collateralized loan obligations, asset-backed securities, and other securities generally exceed ten years, we expect the effective lives to be significantly shorter due to prepayments of the underlying loans and the nature of these securities. The duration of our investment securities portfolio was 3.5 years at December 31, 2013, which was consistent with the duration at December 31, 2012.
On March 29, 2013, we transferred $3 billion of residential mortgage-backed securities from available for sale to held to maturity. The amortized cost, unrealized gains and losses, and fair value of these transferred investment securities immediately prior to the transfer were as follows:


	Amortized			Unrealized			Unrealized			Fair
	cost			gains			losses			value
Residential mortgage-backed securities:
Government National Mortgage Association	$	15		$	1		$	—		$	15

Federal National Mortgage Association	173			12			—			185

Federal Home Loan Mortgage Corporation	96			5			—			102

Collateralized mortgage obligations:
Government National Mortgage Association	885			26			—			910

Federal National Mortgage Association	1,019			9			(3		)	1,026

Federal Home Loan Mortgage Corporation	758			7			(2		)	763

Total collateralized mortgage obligations	2,662			42			(4		)	2,699

Total residential mortgage-backed securities	$	2,946		$	59		$	(4	)	$	3,001

During the quarter ended June 30, 2012 and subsequent to the HSBC Branch Acquisition, we transferred certain mortgage-backed securities with a carrying value of $861 million from our held to maturity portfolio to our available for sale portfolio. We then sold these and other mortgage-backed securities in our available for sale portfolio with a total carrying value of $3 billion for a total pre-tax gain of $21 million in order to manage our interest rate risk and strengthen key financial metrics. The securities sold were selected based on an assessment of their prepayment risk and did not include any that were purchased in conjunction with the HSBC Branch Acquisition. The proceeds from these sales were used to pay down short-term borrowings.
At December 31, 2013 and 2012, $5.6 billion and $5.5 billion, respectively, of our investment securities were pledged to secure borrowings and lines of credit from the FHLB and Federal Reserve Bank (“FRB”), as well as repurchase agreements, certain deposits, and derivative instruments. At December 31, 2013, our investment portfolio included securities issued by the Federal Home Loan Mortgage Corporation, Federal National Mortgage Association, and Government National Mortgage Association with a fair value of $1.6 billion, $2.2 billion, and $1.8 billion, respectively. We had no other investments in securities of a single issuer that exceeded 10% of our stockholders’ equity.
Our investment in FHLB stock consists of $231 million and $102 million of FHLB of New York common stock and FHLB of Boston common stock, respectively, at December 31, 2013 and of $140 million, $24 million, and $121 million of FHLB of New York common stock, FHLB of Pittsburgh common stock, and FHLB of Boston common stock, respectively, at December 31, 2012.
Our investment in FRB stock amounted to $136 million at December 31, 2013 and 2012.

Loans_and_Leases

Loans and Leases	12 Months Ended
	Dec. 31, 2013
Receivables [Abstract]	'
Loans and Leases	'
	Note 4. Loans and Leases
	Overall Portfolio
	Our loan portfolio is made up of two segments, commercial loans and consumer loans. Those segments are further segregated between our loans initially accounted for under the amortized cost method (referred to as “originated” loans) and loans acquired (referred to as “acquired” loans). Our commercial loan portfolio segment includes both business and commercial real estate loans. Our consumer portfolio segment includes residential real estate, home equity, indirect auto, credit cards, and other consumer loans.
	Our loans and leases receivable consisted of the following at December 31:


		2013										2012
		Originated			Acquired			Total				Originated			Acquired			Total
	Commercial:
	Real estate	$	5,527		$	1,387		$	6,914			$	4,491		$	1,975		$	6,466

	Construction	828			36			864				552			75			627

	Business	4,876			414			5,290				4,286			667			4,953

	Total commercial	11,231			1,838			13,068				9,330			2,716			12,047

	Consumer:
	Residential real estate	1,902			1,546			3,448				1,724			2,037			3,762

	Home equity	1,618			1,134			2,752				1,286			1,366			2,652

	Indirect auto	1,544			—			1,544				601			—			601

	Credit cards	325			—			325				215			100			315

	Other consumer	302			—			302				215			118			334

	Total consumer	5,691			2,680			8,371				4,042			3,621			7,663

	Total loans and leases	16,922			4,517			21,440				13,372			6,338			19,710

	Allowance for loan losses	(205		)	(4		)	(209		)		(161		)	(2		)	(163		)
	Total loans and leases, net	$	16,717		$	4,514		$	21,230			$	13,211		$	6,336		$	19,547

	As of December 31, 2013 and 2012, we had a liability for unfunded loan commitments of $13 million and $12 million, respectively. For the years ended 2013 and 2012, we recognized provision for credit losses related to our unfunded loan commitments of $2 million and $1 million, respectively.
	Of the $2.8 billion and $2.7 billion home equity portfolio at December 31, 2013 and 2012, respectively, $1.0 billion and $0.9 billion were in a first lien position at each period end. We hold or service the first lien loan for approximately 10% of the remainder of the home equity portfolio that was in a second lien position as of December 31, 2013 and 2012.
	Acquired loan portfolios
	We have acquired loans in four acquisitions since January 1, 2009. All acquired loans were initially measured at fair value and subsequently accounted for under either Accounting Standards Codification Topic (“ASC”) 310-30 (Loans and Debt Securities Acquired with Deteriorated Credit Quality) or ASC 310-20 (Nonrefundable Fees and Other Costs.)
	The outstanding principal balance and the related carrying amount of our acquired loans included in our Consolidated Statements of Condition were as follows at December 31:


		2013			2012
	Credit impaired acquired loans evaluated individually for future credit losses
	Outstanding principal balance	$	18		$	31

	Carrying amount	12			24

	Acquired loans evaluated collectively for future credit losses
	Outstanding principal balance	3,301			4,774

	Carrying amount	3,233			4,690

	Other acquired loans
	Outstanding principal balance	1,321			1,696

	Carrying amount	1,273			1,623

	Total acquired loans
	Outstanding principal balance	4,640			6,501

	Carrying amount	4,517			6,338

The following table presents changes in the accretable yield, which includes income recognized from contractual interest cash flows, for the dates indicated. Acquired lines of credit accounted for under ASC 310-20 are not included in this table.


Balance at January 1, 2012	$	(1,187	)
HSBC acquisition	(91		)
Net reclassifications from nonaccretable yield	(28		)
Accretion	249

Balance at December 31, 2012	(1,057		)
Reclassifications from nonaccretable yield	(15		)
Accretion	199

Other (1)	22

Balance at December 31, 2013	$	(851	)



-1	Includes changes in expected cash flows from changes in interest rate and prepayment assumptions.
During the first quarter of 2013, we reduced our estimate of future cash flows on acquired loans to reflect our current outlook for prepayment speeds on these balances. The increase in prepayment speed assumptions reduced our accretable discount by $22 million. This change did not materially impact our interest income or net interest margin in 2013.
Allowance for loan losses
As further discussed in Note 1, Summary of Significant Accounting Policies, we establish our allowance for loan losses through a provision for credit losses based on our evaluation of the credit quality of our loan portfolio. We determined our allowance for loan losses by portfolio segment as defined above. For our originated loans, our allowance for loan losses consists of the following elements: (i) specific valuation allowances based on probable losses on specifically identified impaired loans; and (ii) valuation allowances based on net historical loan loss experience for similar loans with similar inherent risk characteristics and performance trends, adjusted, as appropriate for qualitative risk factors specific to respective loan types.
We also maintain an allowance for loan losses on acquired loans when: (i) for loans accounted for under ASC 310-30, there is deterioration in credit quality subsequent to acquisition, and (ii) for loans accounted for under ASC 310-20, the inherent losses in the loans exceed the remaining credit discount recorded at the time of acquisition.


The following table presents the activity in our allowance for loan losses on originated loans and related recorded investment of the associated loans in our originated loan portfolio segment for the years ended December 31:


	Commercial							Consumer
Originated loans	Real estate			Business				Residential			Home equity			Indirect auto			Credit cards			Other			Total
																				consumer
2013
Allowance for loan losses:
Balance at beginning of year	$	38		$	99			$	5		$	5		$	3		$	7		$	5		$	161

Provision for loan losses	17			48				(1		)	6			9			11			8			96

Charge-offs	(10		)	(31		)		(2		)	(3		)	(3		)	(6		)	(8		)	(63		)
Recoveries	4			3				1			—			1			1			2			11

Balance at end of year	$	48		$	119			$	2		$	7		$	10		$	13		$	6		$	205

Allowance for loan losses:
Individually evaluated for impairment	$	4		$	2			$	1		$	3		$	—		$	—		$	—		$	9

Collectively evaluated for impairment	44			117				1			4			10			13			6			196

Total	$	48		$	119			$	2		$	7		$	10		$	13		$	6		$	205

Loans receivable:
Balance at end of year
Individually evaluated for impairment	$	72		$	59			$	20		$	8		$	1		$	—		$	3		$	163

Collectively evaluated for impairment	6,282			4,818				1,882			1,610			1,543			325			299			16,759

Total	$	6,354		$	4,876			$	1,902		$	1,618		$	1,544		$	325		$	302		$	16,922

2012
Allowance for loan losses:
Balance at beginning of year	$	50		$	57			$	4		$	4		$	—		$	—		$	2		$	118

Provision for loan losses	(7		)	67				3			4			4			8			5			84

Charge-offs	(7		)	(27		)		(3		)	(4		)	(1		)	(1		)	(4		)	(46		)
Recoveries	1			2				—			—			—			—			1			6

Allowance related to loans sold	—			—				—			—			—			—			—			(1		)

Balance at end of year	$	38		$	99			$	5		$	5		$	3		$	7		$	5		$	161

Allowance for loan losses:
Individually evaluated for impairment	$	3		$	5			$	3		$	1		$	—		$	—		$	—		$	11

Collectively evaluated for impairment	35			94				1			4			3			7			5			150

Total	$	38		$	99			$	5		$	5		$	3		$	7		$	5		$	161

Loans receivable:
Balance at end of year
Individually evaluated for impairment	$	67		$	58			$	20		$	5		$	—		$	—		$	2		$	152

Collectively evaluated for impairment	4,977			4,228				1,705			1,281			601			215			214			13,221

Total	$	5,044		$	4,286			$	1,724		$	1,286		$	601		$	215		$	215		$	13,372



	Commercial							Consumer
Originated loans	Real estate			Business				Residential			Home Equity			Indirect auto			Credit cards			Other			Total
																				Consumer
2011
Allowance for loan losses:
Balance at beginning of year	$	47		$	42			$	2		$	2		$	—		$	—		$	3		$	95

Provision for loan losses	12			30				3			5			—			—			1			51

Charge-offs	(12		)	(17		)		(2		)	(2		)	—			—			(3		)	(36		)

Recoveries	3			3				1			—			—			—			1			8

Balance at end of year	$	50		$	57			$	4		$	4		$	—		$	—		$	2		$	118

Allowance for loan losses:
Individually evaluated for impairment	$	3		$	2			$	2		$	—		$	—		$	—		$	—		$	7

Collectively evaluated for impairment	47			56				2			4			—			—			2			111

Total	$	50		$	57			$	4		$	4		$	—		$	—		$	2		$	118

Loans receivable:
Balance at end of year
Individually evaluated for impairment	$	60		$	29			$	13		$	2		$	—		$	—		$	—		$	104

Collectively evaluated for impairment	3,921			2,923				1,631			1,131			—			—			167			9,772

Total	$	3,981		$	2,952			$	1,644		$	1,132		$	—		$	—		$	167		$	9,876


The following table presents the activity in our allowance for loan losses and related recorded investment of the associated loans in our acquired loan portfolio for the years ended December 31:


	Commercial							Consumer
Acquired loans	Real estate			Business				Residential			Home equity			Credit cards			Other			Total
																	consumer
2013
Allowance for loan losses:
Balance at beginning of year	$	—		$	—			$	—		$	—		$	—		$	1		$	2

Provision for loan losses	4			—				1			3			—			(1		)	7

Charge-offs	(4		)	—				—			—			—			(1		)	(5		)

Recoveries	—			—				—			—			—			—			—

Balance at end of year	$	—		$	—			$	1		$	3		$	—		$	—		$	4

Allowance for loan losses:
Individually evaluated for impairment	$	—		$	—			$	—		$	—		$	—		$	—		$	—

Collectively evaluated for impairment	—			—				1			3			—			—			4

Total	$	—		$	—			$	1		$	3		$	—		$	—		$	4

Loans receivable:
Balance at end of year
Individually evaluated for impairment	$	1		$	7			$	—		$	1		$	—		$	—		$	10

Collectively evaluated for impairment	—			305				—			960			—			—			1,264

Loans acquired with deteriorated credit quality	1,423			102				1,546			173			—			—			3,244

Total	$	1,423		$	414			$	1,546		$	1,134		$	—		$	—		$	4,517

2012
Allowance for loan losses:
Balance at beginning of year	$	—		$	—			$	—		$	—		$	—		$	2		$	2

Provision for loan losses	6			—				—			—			—			1			7

Charge-offs	(7		)	—				—			—			—			(2		)	(9		)

Recoveries	1			—				—			—			—			—			1

Balance at end of year	$	—		$	—			$	—		$	—		$	—		$	1		$	2

Allowance for loan losses:
Individually evaluated for impairment	$	—		$	—			$	—		$	—		$	—		$	—		$	—

Collectively evaluated for impairment	—			—				—			—			—			1			2

Total	$	—		$	—			$	—		$	—		$	—		$	1		$	2

Loans receivable:
Balance at end of year
Individually evaluated for impairment	$	1		$	7			$	—		$	2		$	—		$	—		$	10

Collectively evaluated for impairment	—			427				—			1,045			100			42			1,614

Loans acquired with deteriorated credit quality	2,048			233				2,037			319			—			76			4,713

Total	$	2,049		$	667			$	2,037		$	1,366		$	100		$	118		$	6,338




	Commercial							Consumer
Acquired loans	Real estate			Business				Residential			Home equity			Credit cards			Other			Total
																	consumer
2011
Allowance for loan losses:
Balance at beginning of year	$	—		$	—			$	—		$	—		$	—		$	—		$	—

Provision for loan losses	1			—				—			—			—			2			3

Charge-offs	(1		)	—				—			—			—			—			(1		)

Recoveries	—			—				—			—			—			—			—

Balance at end of year	$	—		$	—			$	—		$	—		$	—		$	2		$	2

Allowance for loan losses:
Individually evaluated for impairment	$	—		$	—			$	—		$	—		$	—		$	—		$	—

Collectively evaluated for impairment	—			—				—			—			—			2			2

Total	$	—		$	—			$	—		$	—		$	—		$	2		$	2

Loans receivable:
Balance at end of year
Individually evaluated for impairment	$	—		$	—			$	—		$	—		$	—		$	—		$	—

Collectively evaluated for impairment	—			531				—			607			—			44			1,182

Loans acquired with deteriorated credit quality	2,263			289				2,369			426			—			68			5,415

Total	$	2,263		$	820			$	2,369		$	1,034		$	—		$	111		$	6,597

Credit Quality
We monitor credit quality as indicated by various factors and utilize such information in our evaluation of the adequacy of the allowance for loan losses. The following sections discuss the various credit quality indicators that we consider.
Nonperforming loans
Our nonperforming loans consisted of the following at December 31:


	2013										2012
	Originated			Acquired			Total				Originated			Acquired			Total
Commercial:
Real estate	$	53		$	1		$	54			$	51		$	1		$	52

Business	42			9			51				47			9			56

Total commercial	95			10			105				98			10			108

Consumer:
Residential real estate	31			—			31				27			—			27

Home equity	18			20			39				14			19			33

Indirect auto	6			—			6				1			—			1

Other consumer	6			—			6				3			—			3

Total consumer	62			20			82				45			20			65

Total	$	157		$	30		$	188			$	143		$	30		$	173

The table below provides information about the interest income that would have been recognized if our nonperforming loans had performed in accordance with terms for the years ending December 31:


	2013			2012			2011
Additional interest income that would have been recorded if nonperforming loans had performed in accordance with original terms	$	7		$	7		$	6

Impaired loans
The following table provides information about our impaired originated loans including ending recorded investment, principal balance, and related allowance amount at December 31. Loans with no related allowance for loan losses have adequate collateral securing their carrying value and in some circumstances have been charged down to their current carrying value based on the fair value of the collateral. The carrying value of our impaired loans, less any related allowance for loan losses, was 69% and 67% of the loans’ contractual principal balance at December 31, 2013 and 2012, respectively.


	2013										2012
Originated loans	Recorded			Unpaid			Related				Recorded			Unpaid			Related
	investment			principal			allowance				investment			principal			allowance
				balance										balance
With no related allowance recorded:
Commercial:
Real estate	$	48		$	63		$	—			$	42		$	55		$	—

Business	55			84			—				34			57			—

Total commercial	103			146			—				76			112			—

Consumer:
Residential real estate	12			12			—				6			6			—

Home equity	4			5			—				3			3			—

Indirect auto	1			1			—				—			—			—

Other consumer	1			1			—				2			2			—

Total consumer	18			20			—				11			12			—

Total	$	121		$	166		$	—			$	87		$	124		$	—

With a related allowance recorded:
Commercial:
Real estate	$	24		$	35		$	4			$	25		$	37		$	3

Business	4			6			2				24			31			5

Total commercial	28			41			5				48			68			7

Consumer:
Residential real estate	8			9			1				13			14			3

Home equity	4			5			3				2			3			1

Indirect auto	1			1			—				—			—			—

Other consumer	1			1			—				—			—			—

Total consumer	14			16			4				16			17			4

Total	$	42		$	57		$	9			$	64		$	85		$	11

Total
Commercial:
Real estate	$	72		$	97		$	4			$	67		$	92		$	3

Business	59			90			2				58			89			5

Total commercial	131			187			5				125			181			7

Consumer:
Residential real estate	20			21			1				20			20			3

Home equity	8			10			3				5			6			1

Indirect auto	1			2			—				—			—			—

Other consumer	3			3			—				2			2			—

Total consumer	32			36			4				27			28			4

Total	$	163		$	222		$	9			$	152		$	209		$	11

The following table provides information about our impaired acquired loans with no related allowance at December 31. The remaining credit mark is considered adequate to cover any loss on these balances.


	2013										2012
Acquired loans	Recorded			Unpaid principal balance			Related				Recorded			Unpaid principal balance			Related
	investment						allowance				investment						allowance
Commercial:
Real estate	$	1		$	4		$	—			$	1		$	5		$	—

Business	7			8			—				7			7			—

Total commercial	8			12			—				8			12			—

Consumer:
Residential real estate	—			—			—				—			—			—

Home equity	1			2			—				2			3			—

Other consumer	—			—			—				—			—			—

Total consumer	1			2			—				2			3			—

Total(1)	$	10		$	14		$	—			$	10		$	16		$	—


-1	Includes nonaccrual purchased credit impaired loans.
The following table provides information about our impaired originated loans including the average recorded investment and interest income recognized on impaired loans for the years ended December 31:


	2013							2012							2011
Originated loans	Average			Interest				Average			Interest				Average			Interest
	recorded			income				recorded			income				recorded			income
	investment			recognized				investment			recognized				investment			recognized
Commercial:
Real estate	$	80		$	1			$	72		$	1			$	51		$	3

Business	63			1				63			1				24			2

Total commercial	142			2				135			2				75			5

Consumer:
Residential real estate	20			—				20			—				13			1

Home equity	5			—				4			—				1			—

Indirect auto	1			—				—			—				—			—

Other consumer	3			—				2			—				—			—

Total consumer	29			1				26			—				14			1

Total	$	172		$	3			$	161		$	3			$	88		$	5

The following table provides information about our impaired acquired loans including the average recorded investment and interest income recognized on impaired loans for the years ended December 31. There were no impaired acquired loans at December 31, 2011.


	2013							2012
Acquired loans	Average			Interest				Average			Interest
	recorded			income				recorded			income
	investment			recognized				investment			recognized
Commercial:
Real estate	$	1		$	—			$	1		$	—

Business	7			—				8			—

Total commercial	8			—				9			—

Consumer:
Residential real estate	—			—				—			—

Home equity	—			—				1			—

Other consumer	—			—				—			—

Total consumer	—			—				1			—

Total(1)	$	9		$	—			$	10		$	—


-1	Includes nonaccrual purchased credit impaired loans.
Period end nonaccrual loans differed from the amount of total impaired loans as certain TDRs, which are considered impaired loans, were accruing interest because the borrower demonstrated its ability to satisfy the terms of the restructured loan for at least six consecutive payments. Also contributing to the difference are nonaccrual commercial loans less than $200 thousand and nonaccrual consumer loans, which are not considered impaired unless they have been modified in a TDR as they are evaluated collectively when determining the allowance for loan losses.
The following table is a reconciliation between nonaccrual loans and impaired loans at December 31:


	2013										2012
	Commercial			Consumer			Total				Commercial			Consumer			Total

Nonaccrual loans	$	105		$	82		$	188			$	108		$	65		$	173

Plus: Accruing TDRs	45			8			52				36			10			46

Less: Smaller balance nonaccrual loans evaluated collectively when determining the allowance for loan losses	(11		)	(57		)	(67		)		(12		)	(45		)	(57		)
Total impaired loans(1)	$	139		$	33		$	172			$	133		$	29		$	162



-1	Included nonaccrual purchased credit impaired loans.
Credit Quality Indicators
The primary indicators of credit quality are delinquency status and our internal loan gradings for our commercial loan portfolio segment and delinquency status and current FICO scores for our consumer loan portfolio segment.
The following table contains an aging analysis of our loans by class at December 31:


	30-59 days			60-89 days			Greater than			Total			Current			Total loans			Greater than
	past due			past due			90 days			past due						receivable			90 days
							past due												and accruing (1)
2013
Originated loans
Commercial:
Real estate	$	5		$	2		$	27		$	34		$	6,321		$	6,354		$	—

Business	4			3			20			28			4,849			4,876			—

Total commercial	9			5			47			61			11,169			11,231			—

Consumer:
Residential real estate	6			2			21			30			1,872			1,902			—

Home equity	3			2			12			17			1,601			1,618			—

Indirect auto	12			2			3			18			1,526			1,544			—

Credit cards	2			1			3			6			319			325			3

Other consumer	3			1			3			7			295			302			—

Total consumer	27			9			43			79			5,613			5,691			3

Total	$	36		$	15		$	90		$	140		$	16,782		$	16,922		$	3

Acquired loans
Commercial:
Real estate	$	8		$	8		$	37		$	52		$	1,371		$	1,423		$	36

Business	2			1			8			11			403			414			5

Total commercial	10			8			45			63			1,774			1,838			41

Consumer:
Residential real estate	19			11			64			94			1,452			1,546			64

Home equity	7			4			20			31			1,103			1,134			5

Total consumer	26			15			84			125			2,555			2,680			70

Total	$	35		$	23		$	130		$	188		$	4,330		$	4,517		$	110

2012
Originated loans
Commercial:
Real estate	$	4		$	3		$	40		$	47		$	4,996		$	5,044		$	4

Business	5			5			19			29			4,257			4,286			—

Total commercial	10			7			60			77			9,253			9,330			4

Consumer:
Residential real estate	8			2			19			29			1,695			1,724			—

Home equity	3			2			9			13			1,273			1,286			—

Indirect auto	4			—			—			5			596			601			—

Credit cards	—			—			—			1			214			215			—

Other consumer	2			1			1			4			212			215			—

Total consumer	17			5			30			52			3,990			4,042			—

Total	$	26		$	13		$	90		$	129		$	13,244		$	13,372		$	5

Acquired loans
Commercial:
Real estate	$	11		$	18		$	80		$	109		$	1,940		$	2,049		$	79

Business	6			2			13			20			647			667			6

Total commercial	16			20			93			129			2,587			2,716			85

Consumer:
Residential real estate	24			12			69			105			1,932			2,037			69

Home equity	10			5			21			36			1,329			1,366			7

Credit cards	3			2			4			8			92			100			4

Other consumer	2			1			2			5			113			118			2

Total consumer	39			20			96			155			3,466			3,621			82

Total	$	55		$	40		$	189		$	284		$	6,053		$	6,338		$	167


(1)	Includes credit card loans, loans that have matured and are in the process of collection, and acquired loans that were originally recorded at fair value upon acquisition. Acquired loans are considered to be accruing as we can reasonably estimate future cash flows on these acquired loans and we expect to fully collect the carrying value of these loans net of the allowance for acquired loan losses. Therefore, we are accreting the difference between the carrying value of these loans and their expected cash flows into interest income.
Our internal loan risk assessment provides information about the financial health of our commercial borrowers and our risk of potential loss. The following tables present information about the credit quality of our commercial loan portfolio at December 31:


	Real estate			Business			Total			Percent of total
2013
Originated loans:
Pass	$	6,028		$	4,590		$	10,618		94.6	%

Criticized:(1)
Accrual	273			244			517			4.6	%

Nonaccrual	53			42			95			0.8	%

Total criticized	327			286			612			5.4	%

Total	$	6,354		$	4,876		$	11,231		100	%

Acquired loans:
Pass	$	1,260		$	359		$	1,619		88.2	%

Criticized:(1)
Accrual	162			46			208			11.3	%

Nonaccrual	1			9			10			0.5	%

Total criticized	163			55			218			11.8	%

Total	$	1,423		$	414		$	1,838		100	%

2012
Originated loans:
Pass	$	4,746		$	4,069		$	8,815		94.5	%

Criticized:(1)
Accrual	247			170			417			4.5	%

Nonaccrual	51			47			98			1	%

Total criticized	298			217			515			5.5	%

Total	$	5,044		$	4,286		$	9,330		100	%

Acquired loans:
Pass	$	1,794		$	582		$	2,376		87.4	%

Criticized:(1)
Accrual	254			77			331			12.2	%

Nonaccrual	1			9			10			0.4	%

Total criticized	255			85			341			12.6	%

Total	$	2,049		$	667		$	2,716		100	%


(1)	Includes special mention, substandard, doubtful, and loss, which are consistent with regulatory definitions, and as described in Part I, Item 1, “Business,” under the heading “Asset Quality Review.”

Borrower FICO scores provide information about the credit quality of our consumer loan portfolio as they provide an indication as to the likelihood that a debtor will repay their debts. The scores are obtained from a nationally recognized consumer rating agency and are presented in the table below at December 31:


	Residential			Home equity			Indirect Auto			Credit cards			Other			Total			Percent of
	real estate												consumer						total
2013
Originated loans by refreshed FICO score:
Over 700	$	1,609		$	1,327		$	993		$	223		$	173		$	4,324		76	%

660-700	128			158			304			53			53			696			12.2

620-660	56			69			149			25			28			328			5.8

580-620	32			30			55			12			14			142			2.5

Less than 580	38			30			43			8			15			135			2.4

No score(1)	39			3			—			4			20			66			1.1

Total	$	1,902		$	1,618		$	1,544		$	325		$	302		$	5,691		100	%

Acquired loans by refreshed FICO score:
Over 700	$	1,074		$	874		$	—		$	—		$	—		$	1,948		72.7	%

660-700	115			103			—			—			—			218			8.1

620-660	61			57			—			—			—			119			4.4

580-620	57			39			—			—			—			95			3.6

Less than 580	75			40			—			—			—			114			4.3

No score(1)	164			21			—			—			—			185			6.9

Total	$	1,546		$	1,134		$	—		$	—		$	—		$	2,680		100	%

2012
Originated loans by refreshed FICO score:
Over 700	$	1,382		$	1,010		$	335		$	137		$	118		$	2,981		73.7	%

660-700	167			149			146			37			49			548			13.6

620-660	68			59			76			18			28			249			6.2

580-620	39			28			27			9			10			113			2.8

Less than 580	58			36			16			11			10			131			3.2

No score(1)	12			4			1			3			1			20			0.5

Total	$	1,724		$	1,286		$	601		$	215		$	215		$	4,042		100	%

Acquired loans by refreshed FICO score:
Over 700	$	1,353		$	998		$	—		$	63		$	57		$	2,472		68.3	%

660-700	177			136			—			17			18			348			9.6

620-660	104			84			—			9			11			207			5.7

580-620	73			54			—			4			6			136			3.8

Less than 580	109			70			—			5			8			193			5.3

No score(1)	222			24			—			1			19			265			7.3

Total	$	2,037		$	1,366		$	—		$	100		$	118		$	3,621		100	%


(1)	Primarily includes loans that are serviced by others for which refreshed FICO scores were not available as of the date indicated.
Troubled Debt Restructures
The following table details additional information about our TDRs at December 31:


	2013			2012			2011
Aggregate recorded investment of impaired loans with terms modified through a troubled debt restructuring:
Accruing interest	$	52		$	46		$	44

Nonaccrual	56			42			34

Total troubled debt restructurings(1)	$	108		$	89		$	77


(1)	Includes 40 and 44 acquired loans that were restructured with a recorded investment of $1 million and $3 million at December 31, 2013 and 2012, respectively.
The modifications made to loans classified as TDRs typically consist of an extension of the payment terms, providing for a period with interest-only payments with deferred principal payments, rate reduction, or loans restructured in a Chapter 7 bankruptcy. We generally do not forgive principal when restructuring loans.
The financial effects of our modifications are as follows for the years ended December 31:


Type of Concession	Count		Postmodification			Premodification			Postmodification
			recorded			allowance for			allowance for
			investment(1)			loan losses			loan losses
2013
Commercial:
Commercial real estate
Extension of term	5		$	9		$	1		$	1

Deferral of principal	1		8			—			—

Extension of term and rate reduction	8		17			1			—

Commercial business
Extension of term	10		10			2			—

Extension of term and rate reduction	7		1			—			—

Total commercial	31		46			4			1

Consumer:
Residential real estate
Extension of term	2		—			—			—

Rate reduction	3		—			—			—

Deferral of principal and extension of term	5		—			—			—

Extension of term and rate reduction	11		2			—			—

Chapter 7 Bankruptcy	15		1			—			—

Home equity
Rate reduction	2		—			—			—

Deferral of principal and extension of term	3		—			—			—

Extension of term and rate reduction	3		—			—			—

Chapter 7 Bankruptcy	61		2			—			—

Indirect auto
Chapter 7 Bankruptcy	74		1			—			—



Type of Concession	Count		Postmodification			Premodification			Postmodification
			recorded			allowance for			allowance for
			investment(1)			loan losses			loan losses
Other consumer
Extension of term	1		$	—		$	—		$	—

Rate reduction	1		—			—			—

Extension of term and rate reduction	1		—			—			—

Chapter 7 Bankruptcy	54		1			—			—

Total consumer	236		9			—			—

Total	267		$	55		$	4		$	2

2012
Commercial:
Commercial real estate
Extension of term	10		$	11		$	1		$	—

Deferral of principal	1		—			—			—

Extension of term and rate reduction	1		1			—			—

Commercial business
Extension of term	8		4			—			—

Deferral of principal	1		—			—			—

Rate reduction	1		—			—			—

Extension of term and rate reduction	2		4			1			1

Total commercial	24		20			2			1

Consumer:
Residential real estate
Extension of term	4		—			—			—

Rate reduction	3		—			—			—

Deferral of principal and extension of term	5		1			—			—

Extension of term and rate reduction	3		2			—			—

Chapter 7 Bankruptcy	79		6			—			—

Other	6		1			—			—

Home equity
Extension of term and rate reduction	4		—			—			—

Chapter 7 Bankruptcy	160		7			—			—

Other	2		—			—			—

Indirect auto
Chapter 7 Bankruptcy	12		—			—			—

Other consumer
Chapter 7 Bankruptcy	60		2			—			—

Total consumer	338		20			—			1

Total	362		$	40		$	2		$	1


(1)	Postmodification balances approximate premodification balances. The aggregate amount of charge-offs as a result of the restructurings was not significant.
The recorded investment in loans modified as TDRs within 12 months of the balance sheet date and for which there was a payment default during the year ended December 31 are as follows:


	2013			2012
Commercial:
Real estate	$	—		$	1

Business	—			6

Total commercial	—			7

Consumer:
Residential real estate	—			—

Home Equity	—			—

Consumer	—			—

Total consumer	—			—

Total	$	—		$	7

Residential Mortgage Banking
The following table provides information about our residential mortgage banking activities at December 31:


	2013			2012			2011
Loans classified as held for sale	$	50		$	155		$	94

Loans sold during the year	1,400			1,444			738

Gains on sale of loans, net	12			9			3

Mortgages serviced for others	3,665			2,909			2,071

Mortgage servicing asset recorded for loans serviced for others, net	35			26			17

Premises_and_Equipment

Premises and Equipment	12 Months Ended
	Dec. 31, 2013
Property, Plant and Equipment [Abstract]	'
Premises and equipment	'
	Premises and Equipment
	The following table presents the composition of our premises and equipment at December 31:


		2013			2012
	Land	$	29		$	29

	Buildings and leasehold improvements	287			270

	Furniture and equipment	307			268

	Total	623			567

	Accumulated depreciation	(205		)	(156		)
	Premises and equipment, net	$	418		$	411

	Our rent expense, which is included in occupancy and equipment in our Consolidated Statements of Income, was $33 million, $28 million, and $34 million, for 2013, 2012, and 2011, respectively.

Goodwill_and_Other_Intangible_

Goodwill and Other Intangible Assets	12 Months Ended
	Dec. 31, 2013
Goodwill and Intangible Assets Disclosure [Abstract]	'
Goodwill and Intangible Assets Disclosure [Text Block]	'
	Goodwill and Other Intangible Assets
	Goodwill
	The following table shows information regarding our goodwill for the periods indicated:


		Banking			Financial			Consolidated
					services			total
	Balances at January 1, 2012	$	1,641		$	68		$	1,708

	Acquisitions	780			—			780

	Branch sales	(5		)	—			(5		)

	Balances at December 31, 2012	2,416			68			2,484

	Purchase accounting adjustments(1)	(35		)	—			(35		)

	Balances at December 31, 2013	$	2,381		$	68		$	2,449


	(1)	Establishment of deferred tax assets in connection with the HSBC Branch Acquisition and our National City Bank branch acquisition.
	We perform our annual impairment test of goodwill on November 1st of each year. After giving appropriate consideration to all available information, we determined that no impairment of goodwill had been incurred in either 2013 or 2012.
	As part of our impairment test, we utilized both the income and market approaches to compare the carrying values of our Banking and Financial Services reporting units to their estimated fair values.
	Key changes in the market and our operations were monitored from our impairment test date of November 1st to each year end date in order to identify circumstances necessitating further testing of impairment. No such changes were noted for 2013 or 2012.
	At February 24, 2014, the market value of a share of our common stock was $8.82, representing a decline from the $11.05 market value of our common stock at November 1, 2013. The market value of a share of our common stock could be an indicator that an event has occurred which could be indicative of goodwill impairment, which may require us to reevaluate goodwill for impairment prior to the next annual test. As of the date of the filing of these financial statements, we do not know whether or not we will be required to assess goodwill for impairment prior to the next annual impairment test, and if so, whether there will be any goodwill impairment.
	Other Intangible Assets
	The following table provides information regarding our amortizing intangible assets at December 31:


		2013			2012
	Core deposit intangible	$	191		$	191

	Accumulated amortization	(139		)	(111		)
	Net carrying amount	52			81

	Customer lists	95			99

	Accumulated amortization	(53		)	(46		)
	Net carrying amount	42			53

	Total amortizing intangible assets, net	$	94		$	134


	The estimated future amortization expense for our amortizing intangible assets is as follows at December 31, 2013:


		First quarter			Second quarter			Third quarter			Fourth quarter		Total
	2014	$	8		$	7		$	6		$	6	$	27

	2015	6			5			4			4		19

	2016	4			3			3			3		13

	2017	3			3			3			3		12

	2018	3			2			2			2		9

	Thereafter												14

Goodwill and Other Intangible Assets	'
	The estimated future amortization expense for our amortizing intangible assets is as follows at December 31, 2013:


		First quarter			Second quarter			Third quarter			Fourth quarter		Total
	2014	$	8		$	7		$	6		$	6	$	27

	2015	6			5			4			4		19

	2016	4			3			3			3		13

	2017	3			3			3			3		12

	2018	3			2			2			2		9

	Thereafter												14

Deposits

Deposits	12 Months Ended
	Dec. 31, 2013
Deposits [Abstract]	'
Deposits	'
	Deposits
	Our deposits consisted of the following at December 31:


		2013				2012
		Balance		Weighted		Balance		Weighted
				average				average
				rate				rate
	Core deposits:
	Savings	$	3,667	0.1	%	$	3,888	0.15	%

	Interest-bearing checking	4,744		0.04		4,451		0.07

	Money market deposits	9,740		0.21		10,581		0.28

	Noninterest-bearing	4,866		—		4,644		—

	Total core deposits	23,016		0.12		23,563		0.17

	Certificates	3,649		0.68		4,113		0.81

	Total deposits	$	26,665	0.2	%	$	27,677	0.27	%

	Interest expense on our deposits is summarized as follows for the years ended December 31:


		2013		2012		2011
	Certificates	$	26	$	33	$	40

	Money market deposits	21		26		36

	Savings	4		5		5

	Interest-bearing checking	2		2		2

	Total interest expense	$	53	$	67	$	83

	Interest rates on our certificates range from 0.05% to 5.02% at December 31, 2013. Certificates of deposit that we issued in amounts over $100 thousand amounted to $928 million, $1.7 billion, and $1.3 billion at December 31, 2013, 2012, and 2011, respectively. Interest expense on certificates of deposit over $100 thousand totaled $11 million, $11 million, and $16 million in 2013, 2012, and 2011, respectively. Included in certificates of deposit issued in amounts over $100 thousand at December 31, 2013, 2012 and 2011 are $739 million, $635 million and $62 million, respectively, of brokered deposits.
	Included in total deposits are municipal deposits totaling $2.9 billion and $3.3 billion at December 31, 2013 and 2012, respectively.

Borrowings

Borrowings	12 Months Ended
	Dec. 31, 2013
Debt Disclosure [Abstract]	'
Borrowings	'
	Borrowings
	Our outstanding borrowings are summarized as follows at December 31:


		2013		2012
	Short-term borrowings:
	FHLB advances	$	4,304	$	2,439

	Repurchase agreements	518		545

	Total short-term borrowings	4,822		2,984

	Long-term borrowings:
	Senior notes (maturing in 2020)	298		297

	Subordinated notes (maturing in 2021)	298		298

	Junior subordinated debentures (maturing between 2030 and 2037)	113		112

	Other (maturing between 2014 and 2032)	25		25

	Total long-term borrowings	734		732

	Total borrowings	$	5,556	$	3,716

	Our FHLB advances bear interest rates ranging from 0.39% to 0.51% and had a weighted average rate of 0.46% at December 31, 2013 and 0.43% at December 31, 2012. Our repurchase agreements bear interest rates ranging from 0.02% to 0.20% and had a weighted average rate of 0.18% at December 31, 2013 and 2012. Our senior notes and subordinated notes bear interest at annual rates of 6.75% and 7.25%, respectively. Our junior subordinated debentures bear interest rates ranging from 1.52% to 10.88% and have a weighted average interest rate of 2.65% at December 31, 2013.
	Interest expense on our borrowings is summarized as follows for the years ended December 31:


		2013		2012		2011
	FHLB advances	$	14	$	19	$	43

	Repurchase agreements	1		17		31

	Senior notes	21		21		21

	Subordinated notes	23		23		1

	Junior subordinated debentures	5		6		5

	Total interest expense	$	64	$	86	$	101

	Our Bank has lines of credit with the FHLB, FRB, and commercial banks that serve as secondary funding sources for lending, liquidity, and asset and liability management. At December 31, 2013 and 2012, the FHLB facility totaled $4.5 billion and $4.0 billion, respectively, of which $4.2 billion and $2.4 billion was utilized and secured by approximately $3.9 billion and $4.0 billion, respectively, of our commercial real estate, residential real estate, and multifamily loans. Investment securities used to secure the FHLB facility totaled $584 million at December 31, 2013 and no investment securities were used to secure the FHLB facility at December 31, 2012. As of December 31, 2013 and 2012, our lines of credit totaled $777 million and $738 million, respectively with the FRB, and $200 million at December 31, 2013 and 2012, with commercial banks, neither of which was utilized at December 31, 2013 and 2012. Our lines of credit with commercial banks include a committed line of credit agreement, which contains a negative pledge against our First Niagara Bank, N.A. stock and the maintenance of certain standard financial covenants. The interest rate on outstanding borrowings under this line of credit is, at our election, equal to London Interbank Offered Rate (“LIBOR”) plus 150 basis points, resetting every 30, 60 or 90 days. Interest on the other lines of credit with commercial banks is payable at the overnight federal funds rate.
	At times we may enter into repurchase agreements with various broker-dealers, whereby certain of our securities available for sale and certain of our securities held to maturity were pledged to collateralize the borrowings. We treat these repurchase agreements as financing transactions and our obligation to repurchase is reflected as a borrowing in our Consolidated Statements of Condition. The dollar amount of our securities underlying the agreements is included in our securities available for sale and securities held to maturity in our Consolidated Statements of Condition. These securities however, are delivered to the dealer with whom we execute each transaction. The dealers may sell, loan or otherwise dispose of these securities to other parties in the normal course of their business, but they agree to resell to us the same securities at the maturity of the agreements. We also retain the right of substitution of collateral throughout the terms of the agreements. During 2013, we did not enter into any repurchase agreements with broker-dealers and therefore, none of our investment securities were pledged to collateralize these borrowings. Such repurchase agreements averaged $0.9 billion during 2012.
	Our junior subordinated debentures include amounts related to our First Niagara Financial Group Statutory Trust I as well as junior subordinated debentures associated with six statutory trust affiliates that were acquired from our merger with Harleysville and three statutory trusts acquired from NewAlliance (the “Trusts”). The Trusts qualify as variable interest entities and were formed to issue mandatorily redeemable trust preferred securities to investors and loan the proceeds to us for general corporate purposes. The Trusts hold, as their sole assets, junior subordinated debentures of the Company with face amounts totaling $142 million at December 31, 2013. The carrying value of the trust preferred junior subordinated debentures, net of the unamortized purchase accounting fair value adjustment of approximately $29 million, is $113 million at December 31, 2013. We own all of the common securities of the Trusts and have accordingly recorded $4 million in equity method investments classified as other assets in our Consolidated Statement of Condition at December 31, 2013. As the shareholders of the trust preferred securities are the primary beneficiaries of these trusts, the Trusts are not consolidated in our financial statements.
	Our junior subordinated debentures are redeemable prior to the maturity date at our option upon each trust’s stated option repurchase dates, and from time to time thereafter. These debentures are also redeemable in whole at any time upon the occurrence of specific events defined within the trust indenture. Our obligations under the debentures and related documents, taken together, constitute a full and unconditional guarantee by the Company of the issuers’ obligations under the trust preferred securities.
	The aggregate maturities of our long-term borrowings are as follows at December 31, 2013 (by year of maturity):


	2014	$	2

	2015	2

	2016	2

	2017	2

	2018	2

	Thereafter	724



Total	$	734

Derivative_Financial_Instrumen

Derivative Financial Instruments	12 Months Ended
	Dec. 31, 2013
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'
Derivative Financial Instruments	'
	Derivative Financial Instruments
	We are a party to derivative financial instruments in the normal course of business to manage our own exposure to fluctuations in interest rates and to meet the needs of our customers. These financial instruments have been limited to interest rate swap agreements, which are entered into with counterparties that meet established credit standards and, where appropriate, contain master netting and collateral provisions protecting the party at risk. We believe that the credit risk inherent in all of our derivative contracts is minimal based on our credit standards and the netting and collateral provisions of the interest rate swap agreements.
	Our derivative positions include both instruments that are designated as hedging instruments and instruments that are customer related and not designated in hedging relationships. The following table presents information regarding our derivative financial instruments, at December 31:


		Asset derivatives							Liability derivatives
		Notional			Fair value (1)				Notional			Fair value (2)
		amount							amount
	2013
	Derivatives designated as hedging instruments:
	Interest rate swap agreements	$	22		$	—			$	13		$	1

	Derivatives not designated as hedging instruments:
	Interest rate swap agreements	3,092			76				3,094			76

	Total derivatives	$	3,114		$	76			$	3,107		$	77

	2012
	Derivatives designated as hedging instruments:
	Interest rate swap agreements	$	—		$	—			$	15		$	2

	Derivatives not designated as hedging instruments:
	Interest rate swap agreements	2,195			102				2,195			103

	Total derivatives	$	2,195		$	102			$	2,210		$	105


	-1	Represents gross amounts, included in Other Assets in our Consolidated Statements of Condition.

	-2	Represents gross amounts, included in Other Liabilities in our Consolidated Statements of Condition.

	At December 31, 2013, some of our interest rate swaps for which we had master netting arrangements with the counterparty were in a net liability position of $49 million. We offset $76 million of liabilities with $27 million of assets in our Consolidated Statements of Financial Condition at December 31, 2013 related to these interest rate swaps and we did not include any cash collateral in the netting. We posted collateral for liability positions with a fair value of $43 million at December 31, 2013.
	At December 31, 2012, all of our interest rate swaps for which we had master netting arrangements with the counterparty were in a liability position. Accordingly, there was no offsetting in our Consolidated Statements of Financial Condition at December 31, 2012 related to these interest rate swaps. We posted collateral for these liability positions with a fair value of $125 million at December 31, 2012.
	Derivatives designated in hedging relationships
	We designate interest rate swap agreements used to manage changes in the fair value of loans due to interest rate changes as fair value hedges. We have designated the risk of changes in the fair value of loans attributable to changes in the benchmark rate as the hedged risk. Accordingly, changes to the fair value of the hedged items or derivatives attributable to a change in credit risk are excluded from our assessment of hedge effectiveness. The change in fair value of the derivatives, including both the effective and ineffective portions, is recognized in earnings and, so long as our fair value hedging relationships remain highly effective, such change is offset by the gain or loss due to the change in fair value of the loans. The net impact of the fair value hedging relationships on net income was not significant during 2013 and 2012.
	Historically, we have also entered into interest rate swaps to offset the variability in the interest cash outflows of LIBOR based borrowings. These derivative instruments have been designated as cash flow hedges. At December 31, 2013, we did not have any derivatives classified as cash flow hedges. At December 31, 2013, there was a $6 million loss recognized in accumulated other comprehensive income related to borrowings that were previously hedged using interest rate swaps that were classified as cash flow hedges. This amount will be reclassified out of accumulated other comprehensive income and into earnings over the remaining life of the hedged borrowings as an adjustment of yield.
	The following table presents information about amounts recognized for our derivative financial instruments designated in cash flow hedging relationships for the years ended December 31:


	Cash Flow Hedges	2013				2012				2011
	Interest rate swap agreements:
	Amount of gain (loss) on derivatives recognized in other comprehensive income, net of tax	$	1			$	7			$	(16	)

	Amount of (loss) on derivatives reclassified from other comprehensive income to income	(1		)	(1)	(15		)	(2)	(10		)	(1)

	-1	Recognized in interest expense on borrowings in our Consolidated Statements of Income.

	-2	Of this amount, $12 million was recognized in merger and acquisition integration expenses when the associated borrowings were repaid in connection with the HSBC Branch Acquisition and $4 million was recognized in interest expense on borrowings in our Consolidated Statements of Income.
	Derivatives not designated in hedging relationships
	In addition to our derivatives designated in hedge relationships, we act as an interest rate swap counterparty for certain commercial borrowers in the normal course of servicing our customers, which are accounted for at fair value. We manage our exposure to such interest rate swaps by entering into corresponding and offsetting interest rate swaps with third parties that mirror the terms of the interest rate swaps we have with the commercial borrowers. These positions (referred to as “customer swaps”) directly offset each other and our exposure is the positive fair value of the derivatives due to changes in credit risk of our commercial borrowers and third parties. We recognized revenue for this service that we provide our customers of $18 million and $25 million for the years ended December 31, 2013 and 2012, respectively, included in Capital Markets income in our Consolidated Statements of Income.
	In the second quarter of 2012, we sold $3.1 billion of investment securities to a third party (“purchaser”) at a certain price as of the date of the sale. Under the sales agreement, the purchaser subsequently sold all of the investment securities over a set period of time and we received a portion of the additional net profits received in excess of the floor price. The agreement qualified as a free standing derivative and was accounted for at fair value. During 2012, we recorded a total gain of $5 million for the increase in the fair value of the derivative. The agreement concluded with the sale of all of the investment securities.

Commitments_and_Contingent_Lia

Commitments and Contingent Liabilities	12 Months Ended
	Dec. 31, 2013
Commitments and Contingencies Disclosure [Abstract]	'
Commitments and Contingent Liabilities	'
	Commitments and Contingent Liabilities
	Loan Commitments
	In the ordinary course of business, we extend commitments to originate commercial and residential mortgages, commercial loans, and consumer loans. Commitments to extend credit are agreements to lend to a customer as long as there is no violation of any condition established under the contract. Our commitments generally have fixed expiration dates or other termination clauses, and may require our customer to pay us a fee. Since we do not expect all of our commitments to be funded, the total commitment amounts do not necessarily represent our future cash requirements. We evaluate each customer’s creditworthiness on a case-by-case basis. We may obtain collateral based upon our assessment of the customer’s creditworthiness. We may write a commitment on a fixed rate basis exposing us to interest rate risk given the possibility that market rates may change between the commitment date and the actual extension of credit. We also extend credit to our retail and commercial customers, up to a specified amount, through lines of credit. The borrowers are able to draw on these lines as needed, making our funding requirements for these products generally more difficult to predict.
	In addition to the above, we issue standby letters of credit to third parties that guarantee payments on behalf of our commercial customers in the event our customer fails to perform under the terms of the contract between our customer and the third party. Since the majority of our unused commercial lines of credit and our outstanding standby letters of credit expire without being funded, our actual funding requirements may be substantially less than the amounts that we report. We anticipate that we will have sufficient funds available to meet our current loan commitments and other obligations through our normal business operations. The credit risk involved in our issuance of these commitments is essentially the same as that involved in extending loans to customers and is limited to the contractual notional amount of these instruments.
	We had a liability for unfunded commitments of $13 million and $12 million as of December 31, 2013 and 2012, respectively. For the years ending December 31, 2013, and 2012, we recognized provision for credit losses related to our unfunded commitments of $2 million and $1 million, respectively.
	Information pertaining to our loan commitments is as follows at December 31:


		2013		2012
	Outstanding commitments to originate loans:
	Fixed rate	$	217	$	502

	Variable rate	964		837

	Total commitments outstanding	$	1,181	$	1,339

	Unused lines of credit	$	8,400	$	7,734

	Standby letters of credit	297		352

	Commitments to sell residential mortgages	168		474

	Given the current interest rate environment and current customer preference for long-term fixed rate mortgages, coupled with our desire to not hold these assets in our portfolio, we generally sell newly originated fixed rate conventional, 15 to 30 year and most FHA and VA loans in the secondary market to government sponsored enterprises such as FNMA and FHLMC or to wholesale lenders. We generally retain the servicing rights on residential mortgage loans sold which results in the recognition of a mortgage service asset upon sale and monthly service fee income, thereafter, net of servicing asset amortization.
	Lease Obligations
	Our future minimum rental commitments for premises and equipment under non-cancelable operating leases and capital lease obligations are as follows at December 31:


		Operating leases			Capital leases
	2014	$	33		$	3

	2015	30			3

	2016	27			3

	2017	21			3

	2018	17			3

	Thereafter	69		(1)	19		(2)


	-1	Thereafter through 2041.

	(2)	Thereafter through 2032.
	Contingent Liabilities
	In the ordinary course of our business there are various threatened and pending legal proceedings against us. Based on our review and consultation with our outside legal counsel, we believe that the aggregate liability, if any, arising from such litigation would not have a material adverse effect on our Consolidated Financial Statements at December 31, 2013.

Capital

Capital	12 Months Ended
	Dec. 31, 2013
Equity [Abstract]	'
Capital	'
	Capital
	First Niagara Financial Group, Inc. and our bank subsidiary, First Niagara Bank, N.A. are subject to regulatory capital requirements administered by the Board of Governors of the Federal Reserve System (the “Federal Reserve”) and the Office of the Comptroller of Currency (the “OCC”), respectively. Failure to meet minimum capital requirements can initiate certain mandatory and possibly additional discretionary actions by regulators that, if undertaken, could have a direct material effect on our financial statements.
	Under capital adequacy guidelines and the regulatory framework for prompt corrective action, we must meet specific capital guidelines that involve quantitative measures of our assets, liabilities and certain off-balance sheet items as calculated under regulatory accounting practices. Such quantitative measures are also subject to qualitative judgment of the regulators regarding components, risk weightings, and other factors.
	The actual capital amounts, ratios, and requirements for First Niagara Financial Group, Inc. and First Niagara Bank, N.A. are as follows at December 31:


						For capital adequacy				Minimum amount to be
		Actual				purposes				well-capitalized
		Amount		Ratio		Amount		Ratio		Amount		Ratio
	First Niagara Financial Group, Inc.:
	2013
	Leverage ratio	$	2,526	7.26	%	$	1,392	4	%	$	1,739	5	%

	Tier 1 risk-based capital	2,526		9.56		1,057		4		1,585		6

	Total risk-based capital	3,046		11.53		2,114		8		2,642		10

	2012
	Leverage ratio	$	2,265	6.75	%	$	1,342	4	%	$	1,678	5	%

	Tier 1 risk-based capital	2,265		9.29		975		4		1,463		6

	Total risk-based capital	2,737		11.23		1,950		8		2,437		10

	First Niagara Bank, N.A.:
	2013
	Leverage ratio	$	2,675	7.7	%	$	1,390	4	%	$	1,737	5	%

	Tier 1 risk-based capital	2,675		10.15		1,054		4		1,581		6

	Total risk-based capital	2,898		10.99		2,109		8		2,637		10

	2012
	Leverage ratio	$	2,423	7.23	%	$	1,340	4	%	$	1,676	5	%

	Tier 1 risk-based capital	2,423		9.94		975		4		1,462		6

	Total risk-based capital	2,597		10.66		1,949		8		2,437		10

	As of December 31, 2013, we met all capital adequacy requirements to which we were subject and both First Niagara Financial Group, Inc. and First Niagara Bank, N.A. were considered well-capitalized under the Federal Reserve’s Regulation Y (in the case of First Niagara Financial Group, Inc.) and the OCC’s prompt corrective action regulations (in the case of First Niagara Bank, N.A.). We are unaware of any conditions or events since the latest notification from federal regulators that have changed our capital adequacy categories. During 2012, the Company contributed $215 million of capital to the Bank. The Company did not contribute any capital to the Bank in 2013.
	Our ability to pay dividends to our stockholders is substantially dependent upon the ability of the Bank to pay dividends to the Company. Subject to First Niagara Bank, N.A. meeting or exceeding regulatory capital requirements, the prior approval of the OCC is required if the total of all dividends declared by First Niagara Bank, N.A. in any calendar year would exceed the sum of the Bank’s net profits for that year and its retained net profits for the preceding two calendar years, less any required transfers to surplus. Federal law also prohibits the Bank from paying dividends that would be greater than its undivided profits after deducting statutory bad debt in excess of its allowance for loan losses. Under the foregoing dividend restrictions, the Bank could pay additional dividends of approximately $464 million to the Company without obtaining regulatory approvals, however, this amount would be limited to $261 million to maintain its “well-capitalized” status.
	The Bank paid $175 million and $45 million in dividends to the Company in 2013 and 2012, respectively.
	Common Stock Repurchases
	We did not repurchase shares of our common stock during 2013. As of December 31, 2013, we are authorized to repurchase up to 12 million shares of our common stock.
	Preferred Stock
	Our preferred stock pays dividends quarterly when, as and if declared by our board of directors, at a rate of 8.625% per year until February 15, 2017, whereby the dividends are then paid at a floating rate equal to three month LIBOR plus 7.327% per year. Additionally, the preferred stock has no maturity date. We may redeem the preferred stock, in whole or in part, from time to time, on any dividend payment date on or after February 15, 2017, at a redemption price of $25 per share, plus any declared and unpaid dividends.

Income_Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2013
Income Tax Disclosure [Abstract]	'
Income Taxes	'
	Income Taxes
	The components of our income tax expense are as follows for the years ended December 31:


		2013			2012			2011
	Current:
	Federal	$	119		$	36		$	81

	State	4			1			6

		123			37			87

	Deferred taxes (benefit):
	Federal	3			31			3

	State	1			3			(2		)

		5			34			1

	Total income tax expense	$	128		$	71		$	88

	Our effective tax rates for 2013, 2012, and 2011 were 30.2%, 29.6%, and 33.7%, respectively. Our income tax expense differs from our expected tax expense (computed by applying the Federal corporate tax rate of 35% to income before income taxes) as follows for the years ended December 31:


		2013			2012			2011
	Tax expense at statutory rate	$	148		$	84		$	92

	Increase (decrease) attributable to:
	State income taxes, net of Federal benefit	4			2			3

	Bank owned life insurance income	(6		)	(5		)	(4		)
	Tax exempt interest	(11		)	(10		)	(9		)
	Nondeductible acquisition costs	—			—			2

	Credits	(13		)	(2		)	(2		)
	Other	6			2			7

	Income taxes	$	128		$	71		$	88

	The tax effects of our temporary differences that give rise to significant portions of our deferred tax assets and deferred tax liabilities are as follows at December 31:


		2013			2012
	Deferred tax assets:
	Net operating loss and other carryforwards	$	58		$	77

	Financial statement allowance for credit losses	111			103

	Securitizations	2			(27		)

	Deferred compensation	13			15

	Stock-based compensation	14			14

	Other accrued expenses not currently deductible	21			18

	Post-retirement benefit obligation	4			5

	Nonperforming loan interest	12			9

	Other	28			22

	Total gross deferred tax assets	264			236


Valuation allowance	—			(2		)


Deferred tax liabilities:
Unrealized gain on investment securities available for sale	(52		)	(128		)
Partnerships	(3		)	(3		)
Leases	(27		)	(22		)
Acquired intangibles	(33		)	(29		)
Premises and equipment	(19		)	(19		)
Mortgage servicing rights	(13		)	(10		)
Pension benefits	(37		)	(22		)
Other	(2		)	(6		)
Total gross deferred tax liabilities	(187		)	(239		)
Net deferred tax asset (liability)	$	77		$	(5	)



In assessing the realizability of our deferred tax assets, we consider whether it is more likely than not that we will not realize some portion or all of our deferred tax assets. Our ultimate realization of our deferred tax assets is dependent upon our generation of future taxable income during the periods in which those temporary differences become deductible. We consider the scheduled reversal of our deferred tax liabilities, availability of operating loss carrybacks, our projected future taxable income, and our tax planning strategies in making this assessment. Based upon the level of our available historical taxable income, the opportunity for our net operating loss carrybacks, and projections for our future taxable income over the periods which our deferred tax assets are realizable, we believe it is more likely than not that we will realize the benefits of these deductible differences at December 31, 2013.
We may carry net operating losses back to the preceding two taxable years for Federal income tax purposes and forward to the succeeding 20 taxable years for Federal and State income tax purposes, subject to certain limitations. At December 31, 2013, we had net operating loss carryforwards of $139 million for Federal income tax purposes, which will begin to expire in 2020. These losses, subject to an annual limitation, were obtained through our acquisitions of Great Lakes Bancorp, Inc. and Harleysville. State net operating loss carryforwards at December 31, 2013 were $69 million and are expected to expire by 2030. As of December 31, 2013, there is no longer a valuation allowance for net operating loss carryover that is not expected to be utilized by then end of the carryover period.

We generated approximately $25 million in Federal and State tax credits in 2013 associated with investment tax credits that arose in 2013. We have Federal alternative minimum tax credits of approximately $7 million that have an unlimited carryforward period.

We had a valuation allowance of $0.2 million and $2 million, at December 31, 2013 and 2012, respectively. The change in the valuation allowance was recognized through the effective tax rate.

At December 31, 2013, our Bank’s Federal pre-1988 reserve, for which no Federal income tax provision has been made, was approximately $92 million. Under current Federal law, these reserves are subject to recapture into taxable income should our Bank make nondividend distributions, make distributions in excess of earnings and profits retained, as defined, or cease to maintain a banking type charter. A deferred tax liability is not recognized for the base year amount unless it becomes apparent that those temporary differences will reverse into taxable income in the foreseeable future. No deferred tax liability has been established as these two events are not expected to occur in the foreseeable future.
A reconciliation of our unrecognized tax benefits is as follows for the years ended December 31:


	2013			2012			2011
Balance at beginning of year	$	3		$	3		$	8

Additions based on tax positions related to the current year	1			1			1

Additions for tax positions of prior years	3			—			—

Reductions related to settlements with taxing authorities	(1		)	(2		)	—

Reductions as a result of a lapse of the applicable statute of limitations	—			—			(6		)

Balance at end of year	$	6		$	3		$	3

The entire balance of unrecognized tax benefits, if recognized, would favorably affect our effective income tax rate. We recognize penalties and accrued interest related to unrecognized tax benefits in tax expense. Accrued penalties and interest amounted to $0.3 million at December 31, 2013 and 2012. The change in accrued penalties and interest for the current year impacted Consolidated Statements of Income as a component of provision for income taxes. We anticipate that approximately $0.1 million in unrecognized tax benefits will reverse in 2014.

As a large taxpayer, we are under continual audit by the IRS and other taxing authorities. Although we do not anticipate that a significant impact to our unrecognized tax benefit balance will occur during the next 12 months as a result of these audits, it remains possible that the amount of our liability for unrecognized tax benefits could change over that time period. With few exceptions, we are no longer subject to Federal and State income tax examinations by tax authorities for years before 2010. There are no indications of any material adjustments relating to any examination currently being conducted by any taxing authority.

Earnings_Per_Share

Earnings Per Share	12 Months Ended
	Dec. 31, 2013
Earnings Per Share [Abstract]	'
Earnings Per Share	'
	Earnings Per Share
	The following table is a computation of our basic and diluted earnings per share using the two-class method for the years ended December 31:


		2013			2012			2011
	Net income available to common stockholders	$	265		$	141		$	174

	Less income allocable to unvested restricted stock awards	1			—			—

	Net income allocable to common stockholders	$	264		$	140		$	173

	Weighted average common shares outstanding:
	Total shares issued	366			366			285

	Unallocated employee stock ownership plan shares	(2		)	(2		)	(3		)
	Unvested restricted stock awards	(2		)	(1		)	(1		)
	Treasury shares	(12		)	(14		)	(11		)
	Total basic weighted average common shares outstanding	350			349			271

	Incremental shares from assumed vesting of restricted stock awards	1			—			—

	Total diluted weighted average common shares outstanding	350			349			272

	Basic earnings per common share	$	0.75		$	0.4		$	0.64

	Diluted earnings per common share	$	0.75		$	0.4		$	0.64

	Anti-dilutive stock options and restricted stock awards excluded from the diluted weighted average common share calculations	11			12			11

Other_Comprehensive_Income

Other Comprehensive Income	12 Months Ended
	Dec. 31, 2013
Equity [Abstract]	'
Other Comprehensive Income	'
	Other Comprehensive Income
	The following table presents the activity in our other comprehensive income for the years ended December 31:


		Pretax			Income taxes			Net
	2013
	Securities available for sale:
	Net unrealized holding losses arising during the year	$	(177	)	$	(68	)	$	(109	)
	Reclassification adjustment for net unrealized holding gains on securities transferred between available for sale and held to maturity	(55		)	(21		)	(34		)
	Net unrealized losses on securities available for sale	(232		)	(89		)	(143		)
	Net unrealized holding gains on securities transferred between available for sale and held to maturity:
	Net unrealized holding gains transferred during the year	55			21			34

	Amortization of net unrealized holding gains to income during the year	(20		)	(7		)	(12		)	(1)
	Net unrealized holding gains on securities transferred during the year	35			14			22

	Interest rate swaps designated as cash flow hedges:
	Reclassification adjustment for realized losses included in net income	1			1			1			(2)

	Pension and post-retirement actuarial gains	40			15			25

	Total other comprehensive loss	$	(154	)	$	(59	)	$	(95	)
	2012
	Securities available for sale:
	Net unrealized holding gains arising during the year	$	177		$	68		$	109

	Reclassification adjustment for realized gains included in net income	(16		)	(6		)	(10		)
	Reclassification adjustment for net unrealized holding gains on securities transferred between available for sale and held to maturity	4			2			2

	Net unrealized gains on securities available for sale	165			64			101

	Net unrealized holding gains on securities transferred between available for sale and held to maturity:
	Reclassification adjustment for net unrealized holding gains on securities transferred	(4		)	(2		)	(2		)
	Less: amortization of net unrealized holding gains to income during the year	(3		)	(1		)	(2		)	(1)
	Net unrealized holding gains on securities transferred during the year	(7		)	(3		)	(4		)
	Interest rate swaps designated as cash flow hedges:
	Net unrealized gains arising during the year	(1		)	2			(3		)

	Reclassification adjustment for realized losses included in net income	15			6			10			(2)

	Net unrealized losses on interest rate swaps designated as cash flow hedges	15			8			7

	Pension and post-retirement actuarial losses	(24		)	(10		)	(14		)
	Total other comprehensive income	$	149		$	59		$	89




		Pretax			Income taxes			Net
	2011
	Securities available for sale:
	Net unrealized holding gains arising during the year	$	68		$	26		$	42

	Reclassification adjustment for realized gains included in net income	(5		)	(2		)	(3		)
	Reclassification adjustment for net unrealized holding gains on securities transferred between available for sale and held to maturity	(6		)	(2		)	(4		)
	Net unrealized gains on securities available for sale	56			22			35

	Net unrealized holding gains on securities transferred from available for sale and held to maturity:
	Net unrealized holding gains transferred during the year	6			2			4

	Less: amortization of net unrealized holding gains to income during the year	(2		)	(1		)	(1		)	(1)
	Net unrealized holding gains on securities transferred during the year	4			2			3

Interest rate swaps designated as cash flow hedges:
Net unrealized losses arising during the year	(36		)	(14		)	(22		)
Reclassification adjustment for realized losses included in net income	10			4			6			(2)

Net unrealized losses on interest rate swaps designated as cash flow hedges	(26		)	(10		)	(16		)
Pension and post-retirement actuarial losses	(19		)	(8		)	(11		)
Total other comprehensive income	$	16		$	6		$	10


(1)	Included in Interest income on investment securities and other in our Consolidated Statement of Income.

(2)	Included in Interest expense on borrowings in our Consolidated Statement of Income.
The following table presents the activity in our accumulated other comprehensive income for the periods indicated:


	Net unrealized gains on securities available for sale			Net unrealized gains on			Unrealized gains on			Pension and postretirement plans			Total
				securities transferred from			interest rate
				available for sale to			swaps designated as
				held to maturity			cash flow hedges
Balance, January 1, 2011	$	71		$	—		$	3		$	(16	)	$	58

Period change, net of tax	35			3			(16		)	(11		)	10

Balance, December 31, 2011	105			3			(13		)	(27		)	68

Period change, net of tax	101			(4		)	7			(14		)	89

Balance, December 31, 2012	207			(2		)	(6		)	(41		)	157

Period change, net of tax	(143		)	22			1			25			(95		)

Balance, December 31, 2013	$	64		$	20		$	(6	)	$	(16	)	$	62

During the next twelve months, we expect to reclassify $1 million of pre-tax net loss on previous cash flow hedges from accumulated other comprehensive income to earnings.

StockBased_Compensation

Stock-Based Compensation	12 Months Ended
	Dec. 31, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
Stock-Based Compensation	'
	Stock-Based Compensation
	We offer several stock-based incentive plans which are described below. Stock-based compensation expense for 2013, 2012, and 2011 totaled $10 million, $11 million, and $8 million, respectively, which is included in salaries and benefits in our Consolidated Statements of Income.
	Stock Option Plan
	We have two stock-based compensation plans under which we grant options to our directors and key employees. The Amended and Restated 2002 Long-Term Incentive Stock Benefit Plan (the “2002 Plan”), which expires in 2015, authorizes us to issue up to 8 million shares of common stock for grants of stock options, stock appreciation rights, restricted stock awards, restricted stock units, or performance unit awards. The 2012 Equity Incentive Plan (the "2012 Plan"), which expires in 2022, authorizes us to issue up to 7 million shares of common stock for grants of stock options, stock appreciation rights, accelerated ownership option rights, restricted stock awards or restricted stock units. During 2013, we granted stock options and stock awards and units under both plans. We grant stock options with an exercise price equal to the market price of our stock on the date of grant. All options have a ten year term and become fully vested and exercisable over a period of three years from the grant date. When option recipients exercise their options, we issue shares from treasury stock and record the proceeds as additions to capital. At December 31, 2013, we had approximately 1 million and 3 million shares available for grant under the 2002 and 2012 plans, respectively.
	Restricted Stock Plan
	As discussed above, restricted stock awards and restricted stock units may also be granted under both the 2002 Plan and 2012 Plan. Restricted stock grants to non-employee directors vest over one year while restricted stock grants to employees generally vest over three years from the grant date. When restricted stock grants are forfeited before they vest, we reacquire the shares into treasury stock, and hold them to use for new awards.
	Long-Term Performance Plan
	We also have a Long-Term Performance Plan (the “LTPP Plan”) which provides our key executives and other employees with long-term incentives based primarily on performance, as a motivation for future performance and as a retention tool for continued employment. The LTPP Plan is a multi-year performance plan, with stock-based incentive award opportunities if certain company performance targets are met. The LTPP Plan is funded by shares previously approved and authorized under the 2002 Plan and 2012 Plan. For the year ended December 31, 2013, we allocated approximately 30 thousand shares to the LTPP Plan.
	At December 31, 2013, we held approximately 12 million shares of our stock as treasury shares, which is adequate to meet the share requirements of our current stock-based compensation plans. During 2013, we issued 1 million shares from treasury stock in connection with the exercise of stock options and grants of restricted stock.
	Stock Option Grants
	The following is a summary of our stock option activity for the year ended December 31, 2013:


		Number of		Weighted average			Weighted average remaining	Aggregate intrinsic
		shares (in thousands)		exercise price			contractual term	value(1)
	Outstanding at January 1, 2013	11,175		$	13.65

	Granted	434		8.86

	Exercised	(19	)	9.84

	Forfeited	(54	)	10.7

	Expired	(350	)	21.37

	Outstanding at December 31, 2013	11,186		$	13.23		2.7 years	$	1

	Exercisable at December 31, 2013	10,533		$	13.46		2.3 years	$	—


	(1)	Intrinsic value is the difference between the fair value of our stock at December 31, 2013 and the exercise price of the stock award.
	The following is a summary of our nonvested stock option activity for the year ended December 31, 2013:


		Number of		Weighted			Weighted average
		shares (in thousands)		average			grant date
				exercise price			fair value
	Nonvested at January 1, 2013	800		$	11.25		$	3

	Granted	434		8.86			2.36

	Vested	(527	)	11.56			3.07

	Forfeited	(54	)	10.7			2.86

	Nonvested at December 31, 2013	653		$	9.45		$	2.52

	The following is a summary of our stock options outstanding at December 31:


	Exercise price	Options outstanding (in thousands)		Weighted average exercise price			Weighted average remaining life (years)	Options exercisable (in thousands)		Weighted average exercise price
	2013
	$8.86 – $12.00	1,835		$	10.25		6.8	1,225		$	10.8

	$12.01 – $15.00	9,099		13.2			1.9	9,056		13.19

	$15.01 – $18.00	42		15.25			0.5	42		15.25

	$18.01 – $57.75	210		40.07			1.5	210		40.07

	Total	11,186		13.23			2.7	10,533		13.46

	2012
$9.71 – $13.00	2,693		$	11.58		5.6	2,165		$	12

$13.01 – $16.00	8,168		13.3			2.9	7,896		13.28

$16.01 – $20.00	19		16.27			0.6	19		16.27

$20.01 – $57.75	295		41.96			2	295		41.96

Total	11,175		13.65			3.5	10,375		13.83

2011
$9.71 – $13.00	2,569		$	12.04		5.3	2,508		$	12.02

$13.01 – $16.00	8,371		13.32			3.9	7,828		13.28

$16.01 – $20.00	19		16.27			1.6	19		16.27

$20.01 – $57.75	449		38.82			2.2	449		38.82

Total	11,408		14.04			4.2	10,804		14.05

The total intrinsic value of stock options exercised during 2013 was less than $100 thousand. No options were exercised during 2012. As of December 31, 2013, we have $1 million of unrecognized compensation cost related to unvested options that we have granted. We expect this cost to be recognized over a weighted average period of 1.8 years.
We use the Black-Scholes valuation method to estimate the fair value of our stock option awards. This method is dependent upon certain assumptions. The following is a summary of our stock options granted for the years ended December 31, as well as the weighted average assumptions that we utilized to compute the fair value of the options:


	2013			2012			2011
Options granted (in thousands)	434			528			288

Grant date weighted average fair value per stock option	$	2.36		$	2.73		$	3.36

Grant date weighted average share price	$	8.86		$	9.84		$	13.8

Dividend yield	3.61		%	3.25		%	4.64		%
Risk-free interest rate	0.99		%	1.26		%	2.4		%
Expected volatility factor	40.7		%	40.36		%	39.11		%
Expected life (in years)	5.7			5.6			5.5

In the table above, the risk-free interest rate is the zero coupon U.S. Treasury rate commensurate with the expected life of options on the date of their grant. We based the volatility of our stock on historical volatility over a span of time equal to the expected life of the options.
Restricted Stock Awards and Restricted Stock Units
We expense the grant date fair value of our restricted stock awards and restricted stock units over their respective vesting periods. At December 31, 2013 we had $12 million of unrecognized compensation cost related to unvested restricted stock awards and units and we expect this cost to be recognized over a weighted average period of 2.0 years.
The following is a summary of our restricted stock and restricted stock unit activity for 2013:


	Number of		Weighted average grant date fair value
	shares (in thousands)
Unvested at January 1, 2013	1,270		$	10.67

Awarded	1,534		9.31

Vested	(573	)	11.01

Forfeited	(128	)	9.54

Unvested at December 31, 2013	2,103		$	9.65

The fair value of restricted stock awards and restricted stock units that vested during 2013, 2012, and 2011 was $5 million, $3 million, and $3 million, respectively.
Restricted stock units granted to certain members of our Board of Directors vested on December 31, 2013 and 2012 but are not released until the board member retires. Dividend equivalent units earned during 2013 and 2012 on these restricted stock units totaled 4,495 and 3,020, respectively.

Benefit_Plans

Benefit Plans	12 Months Ended
	Dec. 31, 2013
Compensation and Retirement Disclosure [Abstract]	'
Benefit Plans	'
	Benefit Plans
	We account for our pension and postretirement plans by recognizing in our financial statements an asset for a plan’s overfunded status or a liability for a plan’s underfunded status. We report changes in the funded status of our pension and postretirement plan as a component of other comprehensive income, net of applicable taxes, in the year in which changes occur.
	Pension Plans
	We maintain a legacy employer sponsored defined benefit pension plan (the “First Niagara Plan”) for which participation and benefit accruals have been frozen since 2002. Additionally, any pension plans acquired in connection with previous whole-bank acquisitions, and subsequently merged into the First Niagara Plan were frozen prior to or shortly after completion of the transactions. Upon our merger with NewAlliance, we acquired the Employees’ Retirement Plan of NewAlliance Bank (the “NewAlliance Plan”), an employer sponsored defined benefit pension plan. The NewAlliance Plan was frozen prior to completion of the merger and has not been merged into the First Niagara Plan.
	Accordingly, no employees are permitted to commence participation in the First Niagara Plan or the NewAlliance Plan (collectively, the “Plans”) and future salary increases and years of credited service are not considered when computing an employee’s benefits under the Plans. As of December 31, 2013, we have met all minimum ERISA funding requirements.
	We also have unfunded supplemental executive retirement plans (“SERPs”) for which we have recorded an accumulated other comprehensive loss of $3 million and $5 million at December 31, 2013 and 2012, respectively. We had assumed these plans in connection with the NewAlliance and other previous acquisitions, therefore no employees are eligible to commence participation in the SERPs. The projected benefit obligation and accumulated benefit obligation for these SERPs was $21 million and $24 million, respectively, at December 31, 2013 and 2012.
	Information regarding our pension plans is as follows at December 31:


		2013			2012
	Change in projected benefit obligation:
	Projected benefit obligation at beginning of year	$	243		$	219

	Service cost	1			1

	Interest cost	10			11

	Actuarial (gain) loss	(26		)	34

	Benefits paid	(13		)	(21		)
	Projected benefit obligation at end of year	214			243

	Change in fair value of plan assets:
	Fair value of plan assets at beginning of year	276			157

	Employer contributions	2			112

	Actual return on plan assets	25			28

	Benefits paid	(13		)	(21		)
	Fair value of plan assets at end of year	290			276

	Overfunded status at year end	$	76		$	33

	Net pension cost is comprised of the following for the years ended December 31:


		2013			2012			2011
	Service cost	$	1		$	1		$	—

	Interest cost	10			11			9

	Expected return on plan assets	(16		)	(14		)	(7		)
	Amortization of unrecognized loss	3			2			1

	Settlement credit	—			—			(9		)

	Net periodic pension (gain)	$	(2	)	$	(2	)	$	(6	)
	Changes in plan assets and benefit obligations recognized in other comprehensive income are as follows for the years ended December 31:


		2013			2012
	Net (gain) loss	$	(38	)	$	26

	Total (gain) loss recognized in other comprehensive income	(38		)	26

	Total recognized in net periodic pension cost and other comprehensive income	$	(40	)	$	24

	The principal actuarial assumptions we used were as follows for the years ended December 31:


		2013		2012		2011
	Projected benefit obligation:
Discount rate	5.02	%	4.04	%	5.11	%
Net periodic pension cost:
Discount rate	4.07	%	5.16	%	5.48	%
Expected long-term rate of return on plan assets	5.89	%	5.86	%	5	%
The discount rate that we used in the measurement of our pension obligation is determined by modeling the pension plan expected future retirement payment cash flows to the Milliman Bond Matching Model as of the measurement date. The expected long-term rate of return on plan assets reflects long-term earnings expectations on existing plan assets and those contributions expected to be received during the current plan year. In estimating that rate, we gave appropriate consideration to historical returns earned by plan assets in the fund and the rates of return expected to be available for reinvestment. We adjusted rates of return to reflect current capital market assumptions and changes in investment allocations.
Our overall investment strategy with respect to the assets of the Retirement Plan of the First Niagara Financial Group, Inc. is primarily for preservation of capital and to provide regular dividend and interest payments. The Plan’s target asset allocation is 74% fixed income securities, 21% equity securities and 5% cash. The fixed income portion of the Plan assets is to be managed as a high-grade intermediate term fixed income account. Equity securities primarily include investments in large cap value and growth stocks as well as mid and small cap companies. We assumed equity securities to earn a return in the range of 8.5% to 9.5% and fixed income securities to earn a return in the range of 3.5% to 4.5%. The long-term inflation rate was estimated to be 2.5%. When these overall return expectations are applied to our Plan's target allocation, we expect the rate of return to be approximately 5.0%.
Our overall investment strategy with respect to the assets of the Employees' Retirement Plan of NewAlliance Bank is primarily for preservation of capital and to provide regular dividend and interest payments. The Plan’s target asset allocation is 30% fixed income securities, 65% equity securities and 5% cash. The fixed income portion of the Plan assets is to be managed as a high-grade intermediate term fixed income account. Equity securities primarily include investments in large cap value and growth stocks as well as mid and small cap companies. We assumed equity securities to earn a return in the range of 8.5% to 9.5% and fixed income securities to earn a return in the range of 3.5% to 4.5%. The long-term inflation rate was estimated to be 2.5%. When these overall return expectations are applied to our Plan’s target allocation, we expect the rate of return to be approximately 6.5%.
The fair values of the Plans’ assets by asset category and level within the fair value hierarchy are as follows at December 31:


Asset Category	Total			Level 1			Level 2			Level 3
2013
Cash	$	43		$	43		$	—		$	—

Equity securities:
First Niagara Financial Group, Inc. common stock	1			1			—			—

U.S. companies	32			32			—			—

International companies	2			2			—			—

Fixed income securities:
Corporate bonds	4			—			4			—

Exchange traded funds:
Large cap growth	15			15			—			—

Large cap value	9			9			—			—

Foreign large cap blend	3			3			—			—

Small and mid cap blend	2			2			—			—

Mutual fund investments:
Foreign large value and blend	14			14			—			—

Small and midcap growth and blend	11			11			—			—

Mortgage-backed securities	7			7			—			—

Large blend	26			26			—			—

Total return investment grade securities	41			41			—			—

Real estate	3			3			—			—

Diversified emerging markets	5			5			—			—

High yield bond	9			9			—			—

World bond	4			4			—			—

Intermediate term bond	58			58			—			—

	$	290		$	286		$	4		$	—



Asset Category	Total			Level 1			Level 2			Level 3
2012
Cash	$	52		$	52		$	—		$	—

Equity securities:
U.S. companies	24			24			—			—

International companies	2			2			—			—

Fixed income securities:
Corporate bonds	5			—			5			—

Exchange traded funds:
Large cap growth	12			12			—			—

Large cap value	6			6			—			—

Foreign large cap blend	2			2			—			—

Intermediate term bond fund	4			4			—			—

Diversified emerging markets	1			1			—			—

Small and mid cap blend	2			2			—			—

Mutual fund investments:
Foreign large value and blend	14			14			—			—

Small and midcap growth and blend	8			8			—			—

Mortgage-backed securities	7			7			—			—

Large blend	18			18			—			—

Total return investment grade securities	42			42			—			—

Real estate	3			3			—			—

Diversified emerging markets	3			3			—			—

High yield bond	5			5			—			—

World bond	4			4			—			—

Intermediate term bond	60			60			—			—

	$	276		$	271		$	5		$	—

The Plans did not hold any assets classified as Level 3 during 2013 or 2012.
Estimated benefit payments under our pension plans over the next ten years are as follow at December 31, 2013:


2014	$	13

2015	13

2016	13

2017	13

2018	14

2019-2023	70

Other Post-Retirement Benefits
We have an unfunded post-retirement medical plan which we have modified so that participation is closed to those employees who did not meet the retirement eligibility requirements by December 31, 2001. We also acquired three unfunded post-retirement employee benefit plans from our merger with NewAlliance which are also frozen. Information regarding these post-retirement plans is as follows at December 31:


	2013			2012
Change in accumulated post-retirement benefit obligation:
Accumulated post-retirement benefit obligation at beginning of year	$	13		$	15

Interest cost	1			1

Actuarial (gain)	(3		)	(1		)
Curtailments	—			(1		)

Benefits paid	(1		)	(1		)
Accumulated post-retirement benefit obligation at end of year	$	10		$	13

Unfunded status at year end	$	(10	)	$	(13	)
The components of net periodic post-retirement benefit cost are as follows for the years ended December 31:


	2013			2012			2011
Interest cost	$	1		$	1		$	1

Total periodic post-retirement cost	$	—		$	1		$	1

Changes in plan benefit obligations recognized in other comprehensive income are as follows for the years ended December 31:


	2013			2012
Net (gain)	$	(3	)	$	(2	)
Total (gain) recognized in other comprehensive income	$	(3	)	$	(2	)
Total recognized in net periodic post-retirement cost and other comprehensive income	$	(2	)	$	(1	)
The principal actuarial assumptions used were as follows for the years ended December 31:


	2013		2012		2011
Accumulated post-retirement benefit obligation:
Discount rate	4.87	%	3.89	%	5.19	%
Total periodic cost:
Discount rate	3.89	%	5.19	%	5.36	%
The assumed health care cost trend rate used in measuring the accumulated post-retirement benefit obligation was 7.8% for 2013, and gradually decreased to 6.4% by 2015. This assumption can have a significant effect on the amounts reported. If the rate were increased one percent, our accumulated post-retirement benefit obligation as of December 31, 2013 and our total periodic cost for 2013 would have increased by 5% and 7%, respectively. If the rate were decreased one percent, our accumulated post-retirement benefit obligation as of December 31, 2013 and our total periodic cost would have decreased by 4% and 6%, respectively. We do not anticipate making any contributions to the post-retirement plan in 2013, except to continue funding benefit payments as they come due.
Estimated benefit payments under the post-retirement plan over the next ten years are as follows at December 31, 2013:


2014	$	1

2015	1

2016	1

2017	1

2018	1

2019-2023	4

Amounts recognized in our Consolidated Statements of Condition related to our pension and post-retirement plans are as follows for the years ended December 31:


	2013			2012
Other assets:
Fair value of plan assets in excess of projected benefit obligation	$	76		$	33

Other liabilities:
Accumulated post-retirement benefit obligation	$	10		$	13


Accumulated other comprehensive loss (income), net of taxes:
Pension plans	$	19		$	42

Post-retirement benefit plan	(2		)	(1		)
	$	16		$	41

401(k) Plan
Our employees that meet certain age and service requirements are eligible to participate in our employer sponsored 401(k) plan. Under the plan, participants may make contributions, in the form of salary deferrals, up to the maximum Internal Revenue Code limit. We contribute to the plan an amount equal to 100% of the first 4% of employee contributions plus 50% of employee contributions between 5% and 6%. These matching contributions are 100% vested. Our total contributions to the 401(k) plan amounted to $13 million, $11 million, and $9 million for 2013, 2012, and 2011, respectively.
Employee Stock Ownership Plan (“ESOP”)
Our employees that meet certain age and service requirements are eligible to participate in our ESOP. Our ESOP holds shares of First Niagara Financial Group, Inc. common stock that were purchased in our 1998 initial public offering and in the open market. The purchased shares were funded by loans in 1998 and 2003 from the Company to the Bank payable in equal annual installments over 30 years bearing a fixed interest rate. Loan payments are funded by cash contributions from the Bank and dividends on allocated and unallocated First Niagara Financial Group, Inc. stock held by the ESOP. The loans can be prepaid without penalty. As the loan is internally leveraged, the loan receivable from the Bank to the Company is not reported as an asset nor is the debt of the Bank shown as a liability in the Company’s financial statements.
Shares purchased by the ESOP are maintained in a suspense account and held for allocation among the participants. As annual loan payments are made, shares are released and allocated to employee accounts. We recognize compensation expense in an amount equal to the average market price of the shares released during the respective periods in which they are committed to be released. Compensation expense of $1 million, $2 million, and $2 million was recognized for 2013, 2012, and 2011, respectively, in connection with 178 thousand shares allocated to participants during both 2013 and 2012 and 265 thousand shares allocated to participants during 2011. The amounts of unallocated and allocated shares held by the ESOP were both 2 million at December 31, 2013 and 2012. The fair value of unallocated ESOP shares was $21 million and $17 million at December 31, 2013 and 2012, respectively.
Other Plans
We also sponsor various nonqualified compensation plans for officers and employees. Awards are payable if certain earnings and performance objectives are met. Expenses under these plans amounted to $27 million, $18 million and $22 million for 2013, 2012, and 2011, respectively.

Fair_Value_Measurements

Fair Value Measurements	12 Months Ended
	Dec. 31, 2013
Fair Value Disclosures [Abstract]	'
Fair Value Measurements	'
	Fair Value Measurements
	Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. Current accounting guidance establishes a fair value hierarchy based on the transparency of inputs participants use to price an asset or liability. The fair value hierarchy prioritizes these inputs into the following three levels:
	Level 1 Inputs—Unadjusted quoted prices in active markets for identical assets or liabilities that are available at the measurement date.
	Level 2 Inputs—Inputs, other than quoted prices included within Level 1, that are observable for the asset or liability, either directly or indirectly. These might include quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the asset or liability (such as interest rates, volatilities, prepayment speeds, credit risks, etc.), or inputs that are derived principally from or corroborated by market data through correlation or other means.
	Level 3 Inputs—Unobservable inputs for determining the fair value of the asset or liability and are based on the entity’s own estimates about the assumptions that market participants would use to price the asset or liability.
	A financial instrument’s categorization within the valuation hierarchy is based on the lowest level of input that is significant to the fair value measurement. A description of the valuation methodologies used for instruments measured at fair value, as well as the general classification of such instruments pursuant to the valuation hierarchy, is set forth below.
	Our valuation methodologies may produce a fair value calculation that may not be indicative of net realizable value or reflective of future fair values. While we believe our valuation methodologies are appropriate and consistent with other market participants, the use of different methodologies or assumptions to determine the fair value of certain financial instruments could result in a different estimate of fair value.
	Assets and Liabilities Measured at Fair Value on a Recurring Basis
	Securities Available for Sale
	The fair value estimates of available for sale securities are based on quoted market prices of identical securities, where available (Level 1). However, as quoted prices of identical securities are not often available, the fair value estimate for almost our entire investment portfolio is based on quoted market prices of similar securities, adjusted for differences between the securities (Level 2). Adjustments may include amounts to reflect differences in underlying collateral, interest rates, estimated prepayment speeds, and counterparty credit quality. Where sufficient information is not available from the pricing services to produce a reliable valuation, we estimate fair value based on either broker quotes or internally developed models. We determined the fair value using third party pricing services, including brokers. As of December 31, 2013, $1.4 billion of our investment securities were priced utilizing broker quotes and $68 million were internally priced. See Item 7, "Management's Discussion and Analysis of Financial Condition and Results of Operations,"Critical Accounting Policies and Estimates," for details regarding our pricing process and sources.
	Loans held for sale
	We have elected the fair value option for certain residential real estate loans held for sale as we believe the fair value measurement of such loans reduces certain timing differences in our Statement of Income and better aligns with our management of the portfolio from a business perspective. This election is made at the time of origination, on a loan by loan basis, and is irrevocable. The secondary market for securities backed by similar loan types is actively traded, which provides readily observable market pricing to be used as input for the estimate for the fair value of our loans. Accordingly, we have classified this fair value measurement as Level 2. Interest income on these loans is recognized in Interest Income—Loans and Leases in our Consolidated Statements of Income.
	There were no loans held for sale that were nonaccrual or 90 or more days past due as of December 31, 2013 or 2012. The table below presents information about our loans held for sale for which we elected the fair value option at December 31:


		2013			2012
	Fair value carrying amount	$	50		$	155

	Aggregate unpaid principal balance	1			149

	Fair value carrying amount less aggregate unpaid principal balance	$	49		$	5

	Derivatives
	We obtain fair value measurements of our interest rate swaps from a third party. The fair value measurements are determined using a market standard methodology of netting discounted future fixed cash receipts (or payments) and the discounted expected variable cash payments (or receipts). Variable cash payments (or receipts) are based on an expectation of future interest rates derived from observable market interest rate curves. Credit valuation adjustments are incorporated to appropriately reflect our nonperformance risk as well as the counterparty’s nonperformance risk. The impact of netting and any applicable credit enhancements, such as bilateral collateral postings, thresholds, mutual puts, and guarantees are also considered in the fair value measurement.
	The fair value of our interest rate swaps was estimated using primarily Level 2 inputs. However, Level 3 inputs were used to determine credit valuation adjustments, such as estimates of current credit spreads to evaluate the likelihood of default. We have determined that the impact of these credit valuation adjustments was not significant to the overall valuation of our interest rate swaps. Therefore, we have classified the entire fair value of our interest rate swaps in Level 2 of the fair value hierarchy.


	Assets and Liabilities Measured at Fair Value on a Recurring Basis
	The following tables summarize our assets and liabilities measured at fair value on a recurring basis at December 31:


		Fair Value Measurements
		Total			Level 1			Level 2			Level 3
	2013
	Assets:
	Investment securities available for sale:
	Debt securities:
	States and political subdivisions	$	529		$	—		$	529		$	—

	U.S. Treasury	20			20			—			—

	U.S. government agencies	4			—			4			—

	U.S. government sponsored enterprises	308			—			308			—

	Corporate	868			—			868			—

	Trust preferred securities	4			—			—			4

	Total debt securities	1,734			20			1,709			4

	Mortgage-backed securities:
	Residential mortgage-backed securities:
	Government National Mortgage Association	40			—			40			—

	Federal National Mortgage Association	139			—			139			—

	Federal Home Loan Mortgage Corporation	159			—			159			—

	Collateralized mortgage obligations:
	Federal National Mortgage Association	761			—			761			—

	Federal Home Loan Mortgage Corporation	379			—			379			—

Non-agency issued	13			—			13			—

Total collateralized mortgage obligations	1,152			—			1,152			—

Total residential mortgage-backed securities	1,490			—			1,490			—

Commercial mortgage-backed securities, non-agency issued	1,831			—			1,831			—

Total mortgage-backed securities	3,321			—			3,321			—

Collateralized loan obligations, non-agency issued	1,431			—			1,431

Asset-backed securities collateralized by:
Student loans	312			—			312			—

Credit cards	73			—			73			—

Auto loans	335			—			335			—

Other	186			—			186			—

Total asset-backed securities	905			—			905			—

Other	33			22			10			—

Total securities available for sale	7,423			43			7,376			4

Loans held for sale (1)	50			—			50			—

Derivatives	49			—			49			—

Total assets	$	7,522		$	43		$	7,476		$	4

Liabilities:
Derivatives	$	50		$	—		$	50		$	—


(1)	Represents loans for which we have elected the fair value option.



	Fair Value Measurements
	Total			Level 1			Level 2			Level 3
2012
Assets:
Investment securities available for sale:
Debt securities:
States and political subdivisions	$	608		$	—		$	608		$	—

U.S. Treasury	21			21			—			—

U.S. government agencies	5			—			5			—

U.S. government sponsored enterprises	404			—			404			—

Corporate	837			—			837			—

Trust preferred securities	14			—			—			14

Total debt securities	1,889			21			1,854			14

Mortgage-backed securities:
Residential mortgage-backed securities:
Government National Mortgage Association	70			—			70			—

Federal National Mortgage Association	414			—			414			—

Federal Home Loan Mortgage Corporation	355			—			355			—

Collateralized mortgage obligations:
Government National Mortgage Association	1,091			—			1,091			—

Federal National Mortgage Association	1,474			—			1,474			—

Federal Home Loan Mortgage Corporation	1,047			—			1,047			—

Non-agency issued	61			—			61			—

Total collateralized mortgage obligations	3,674			—			3,674			—

Total residential mortgage-backed securities	4,513			—			4,513			—

Commercial mortgage-backed securities, non-agency issued	2,060			—			2,060			—

Total mortgage-backed securities	6,573			—			6,573			—

Collateralized loan obligations, non-agency issued	1,545			—			—			1,545

Asset-backed securities collateralized by:
Student loans	390			—			390			—

Credit cards	75			—			75			—

Auto loans	372			—			372			—

Other	119			—			119			—

Total asset-backed securities	956			—			956			—

Other	31			23			8			—

Total securities available for sale	10,994			44			9,391			1,559

Loans held for sale (1)	155			—			155			—

Derivatives	102			—			102			—

Total assets	$	11,250		$	44		$	9,647		$	1,559

Liabilities:
Derivatives	$	105		$	—		$	105		$	—


(1)	Represents loans for which we have elected the fair value option.
Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis
The following table summarizes our assets and liabilities measured at fair value on a nonrecurring basis for the years ended December 31:


	Fair Value Measurements													Total gains
	Total			Level 1			Level 2			Level 3				(losses)
2013
Collateral dependent impaired loans	$	32		$	—		$	20		$	12			$	(2	)

2012
Collateral dependent impaired loans	$	48		$	—		$	31		$	17			$	(2	)

Collateral Dependent Impaired Loans
We record nonrecurring fair value adjustments to the carrying value of collateral dependent impaired loans when establishing the allowance for loan losses. Such amounts are generally based on the fair value of the underlying collateral supporting the loan less estimated costs to sell the collateral. When the fair value of such collateral, less costs to sell, is less than the carrying value of the loan, a specific allowance or charge off is recorded through a provision for credit losses. Real estate collateral is typically valued using independent appraisals that we review for acceptability, or other indications of value based on recent comparable sales of similar properties or assumptions generally observable in the marketplace and the related nonrecurring fair value measurements have been classified as Level 2. Under certain circumstances significant adjustments may be made to the appraised value due to the lack of direct marketplace information. Such adjustments are made as determined necessary in the judgment of our experienced senior credit officers to reflect current market conditions and current operating results for the specific collateral. When the fair value of collateral dependent impaired loans is based on appraisals containing significant adjustments, such collateral dependent impaired loans are classified as Level 3. We obtain new appraisals from an approved appraiser, in accordance with Interagency Appraisal and Evaluation Guidelines and internal policy. Appraisals or evaluations for assets securing substandard rated loans are usually completed within 90 days of the downgrade. An appraisal may be obtained more frequently when volatile or unusual market conditions exist that could affect the ultimate realization of the value of the real estate collateral.
During 2013, we recorded an increase of $2 million to our specific allowance as a result of adjusting the fair value of the collateral for certain collateral dependent impaired loans to $32 million at December 31, 2013, which is included in our provision for credit losses. During 2012, we recorded an increase of $2 million to our specific allowance as a result of adjusting the fair value of the collateral for certain collateral dependent impaired loans to $48 million at December 31, 2012, which is included in our provision for credit losses.
Level 3 Assets
The changes in Level 3 assets and liabilities measured at estimated fair value on a recurring basis were as follows for the years ended December 31:


	2013										2012
	Trust			Collateralized			Total				Trust			Collateralized			Total
	preferred			loan obligations							preferred			loan obligations
	securities										securities
Balance at beginning of period	$	14		$	1,545		$	1,559			$	25		$	—		$	25

Transfers between level 2 and level 3(1)	—			(1,545		)	(1,545		)		—			158			158

Purchases	—			—			—				—			1,352			1,352

Settlements	(10		)	—			(10		)		(14		)	—			(14		)

Gains included in other comprehensive income	1			—			1				3			35			38

Losses included in earnings	(1		)	—			(1		)		—			—			—

Balance at end of period	$	4		$	—		$	4			$	14		$	1,545		$	1,559


-1	Our policy is to recognize the transfer at the beginning of the period.
Due to the lack of observable market data, we have classified our trust preferred securities in Level 3 of the fair value hierarchy.
Our CLOs are securitized products where payments from multiple middle sized and large business loans are pooled together and passed on to different classes of owners in various tranches. In 2012 and most of 2013, the markets for such securities were generally characterized by low trading volumes and wide bid-ask spreads, all driven by more limited market participants. Although estimated prices were generally obtained for such securities, the level of market observable assumptions used was limited in the valuation. Specifically, market assumptions regarding credit adjusted cash flows and liquidity influences on discount rates were difficult to observe at the individual bond level. During 2012, we transferred our CLOs from level 2 to level 3 of the fair value hierarchy as fair values utilized significant unobservable inputs because observable market data was not available to incorporate into the pricing during 2012. The securities were valued either by a third party specialist using a discounted cash flow approach and proprietary pricing model or internally using similarly developed models. The models considered estimated prepayment speeds, losses, recoveries, default rates that are implied by the underlying performance of collateral in the structure or similar structures, and discount rates that are implied by market prices for similar securities and collateral structure types. During 2013, we transferred our collateralized loan obligations ("CLOs") from level 3 to level 2 of the fair value hierarchy based on increased trading activity and price transparency.
The table below provides a summary of our level 3 fair value measurements, valuation techniques, and the significant unobservable inputs at December 31:


	Fair			Valuation	Unobservable	Range (weighted average)
	Value			technique	input
2012
Collateralized loan obligations	$	1,545		Internally modeled	Market spreads	150 - 550 bps (213 bps)

As of December 31, 2012, the fair values of our trust preferred securities were based upon third party pricing without adjustment and as a result the assets are not included in the above table.
Significant changes in any of the unobservable inputs would result in changes in fair value of the related assets. The fair value of our CLOs is inversely related to the market spreads. Increases in market spreads would decrease the fair value of our CLOs while decreases in the market spreads would increase our fair value.

Fair Value of Financial Instruments
The carrying value and estimated fair value of our financial instruments, including those that are not measured and reported at fair value on a recurring basis or nonrecurring basis, are as follows at December 31:


	2013									2012
	Carrying value			Estimated fair			Fair value			Carrying value			Estimated fair			Fair value
				value			level						value			level
Financial assets:
Cash and cash equivalents	$	463		$	463		1			$	431		$	431		1

Investment securities available for sale	7,423			7,423			1,2,3		(1)	10,994			10,994			1,2,3		(1)

Investment securities held to maturity	4,042			3,988			2			1,300			1,374			2

Federal Home Loan Bank and Federal Reserve Bank common stock	469			469			2			420			420			2

Loans held for sale	50			50			2			155			155			2

Loans and leases, net	21,230			21,774			2,3		(2)	19,547			20,213			2,3		(2)

Derivatives	49			49			2			102			102			2

Accrued interest receivable	103			103			2			108			108			2

Financial liabilities:
Deposits	$	26,665		$	26,695		2			$	27,677		$	27,852		2

Borrowings	5,556			5,599			2			3,716			3,774			2

Derivatives	50			50			2			105			105			2

Accrued interest payable	10			10			2			10			10			2


(1)	For a detailed breakout of our investment securities available for sale, refer to our table of recurring fair value measurements.

-2	Loans and leases classified as level 2 are made up of $20 million and $31 million of collateral dependent impaired loans without significant adjustments made to appraised values at December 31, 2013 and 2012, respectively. All other loans and leases are classified as level 3.

Our fair value estimates are based on our existing on and off balance sheet financial instruments without attempting to estimate the value of any anticipated future business and the value of assets and liabilities that are not considered financial instruments. In addition, the tax ramifications related to the realization of the unrealized gains and losses can have a significant effect on our fair value estimates and have not been considered in these estimates.
Our fair value estimates are made as of the dates indicated, based on relevant market information and information about the financial instruments, including our 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 our assumptions could significantly affect the estimates. Our fair value estimates, methods, and assumptions are set forth below for each type of financial instrument. The method of estimating the fair value of the financial instruments disclosed in the table above does not necessarily incorporate the exit price concept used to record financial instruments at fair value in our Consolidated Statements of Condition.
Cash and Cash Equivalents
The carrying value of our cash and cash equivalents approximates fair value because these instruments have original maturities of three months or less.
Investment Securities
The fair value estimates of securities are based on quoted market prices of identical securities, where available. However, as quoted prices of identical securities are not often available, the fair value estimate for almost our entire investment portfolio is based on quoted market prices of similar securities, adjusted for differences between the securities. Adjustments may include amounts to reflect differences in underlying collateral, interest rates, estimated prepayment speeds, and counterparty credit quality.
Federal Home Loan Bank and Federal Reserve Bank Common Stock
The carrying value of our Federal Home Loan Bank and Federal Reserve Bank common stock, which are non-marketable equity investments, approximates fair value.
Loans and Leases
Our variable rate loans reprice as the associated rate index changes. The calculation of fair value for our variable rate loans is driven by the comparison between the loan’s margin and the prevailing margin observed in the market at the time of the valuation. Any caps and floors embedded in the loan’s pricing structure are also incorporated into the fair value. We calculated the fair value of our fixed-rate loans and leases by discounting scheduled cash flows through the estimated maturity using credit adjusted period end origination rates. Our estimate of maturity is based on the contractual cash flows adjusted for prepayment estimates based on current economic and lending conditions.
Accrued Interest Receivable and Accrued Interest Payable
The carrying value of accrued interest receivable and accrued interest payable approximates fair value.
Deposits
The fair value of our deposits with no stated maturity, such as savings and checking, as well as mortgagors’ payments held in escrow, is equal to the amount payable on demand. The fair value of our certificates of deposit is based on the discounted value of contractual cash flows, using the period end rates offered for deposits of similar remaining maturities.
Borrowings
The fair value of our borrowings is calculated by discounting scheduled cash flows through the estimated maturity using period end market rates for borrowings of similar remaining maturities.
Commitments
The fair value of our commitments to extend credit, standby letters of credit, and financial guarantees are not included in the above table as the carrying value generally approximates fair value. These instruments generate fees that approximate those currently charged to originate similar commitments.

Segment_Information

Segment Information	12 Months Ended
	Dec. 31, 2013
Segment Reporting [Abstract]	'
Segment Information	'
	Segment Information
	We have two business segments: banking and financial services. The banking segment includes all of our retail and commercial banking operations. The financial services segment includes our insurance operations. Substantially all of our assets relate to the banking segment. Transactions between our banking and financial services segments are eliminated in consolidation.
	Selected financial information for our segments follows for the years ended December 31:


		Banking		Financial		Consolidated
				services		total
	2013
	Net interest income	$	1,093	$	—	$	1,093

	Provision for credit losses	105		—		105

	Net interest income after provision for credit losses	988		—		988

	Noninterest income	298		67		366

	Amortization of intangibles	37		3		40

	Other noninterest expense	839		52		891

	Income before income taxes	411		12		423

	Income tax expense	123		5		128

	Net income	$	288	$	7	$	295

	2012
	Net interest income	$	1,023	$	—	$	1,023

	Provision for credit losses	92		—		92

	Net interest income after provision for credit losses	931		—		931

	Noninterest income	291		68		360

	Amortization of intangibles	41		4		45

	Other noninterest expense	955		51		1,006

	Income before income taxes	227		13		239

	Income tax expense	66		5		71

	Net income	$	161	$	8	$	168

	2011
	Net interest income	$	881	$	—	$	881

	Provision for credit losses	58		—		58

	Net interest income after provision for credit losses	823		—		823

	Noninterest income	180		65		245

	Amortization of intangibles	21		5		26

	Other noninterest expense	728		53		781

	Income before income taxes	254		8		262

	Income tax expense	85		3		88

	Net income	$	169	$	5	$	174

Condensed_Parent_Company_Only_

Condensed Parent Company Only Financial Statements (Notes)	12 Months Ended
	Dec. 31, 2013
Condensed Financial Information of Parent Company Only Disclosure [Abstract]	'
Condensed Parent Company Only Financial Statements	'
	Condensed Parent Company Only Financial Statements
	The following condensed statements of condition of the Company at December 31, 2013 and 2012 and the related condensed statements of income and cash flows for the years ended December 31, 2013, 2012, and 2011 should be read in conjunction with our Consolidated Financial Statements and related notes:


	Condensed Statements of Condition	2013			2012
	Assets:
	Cash and cash equivalents	$	390		$	415

	Investment securities available for sale	3			2

	Loan receivable from ESOP	21			22

	Investment in subsidiary	5,255			5,166

	Deferred taxes	34			16

	Other assets	13			34

	Total assets	$	5,715		$	5,655

	Liabilities and Stockholders’ Equity:

	Accounts payable and other liabilities	$	13		$	22

	Borrowings	709			707

	Stockholders’ equity	4,993			4,927

	Total liabilities and stockholders’ equity	$	5,715		$	5,655




	Condensed Statements of Income	2013			2012			2011
	Interest income	$	2		$	7		$	2

	Dividends received from subsidiary	175			45			75

	Total interest and dividend income	177			52			77

	Interest expense	49			50			27

	Net interest income	128			3			50

	Noninterest income	2			3			(3		)

	Noninterest expense	30			27			25

	Income (loss) before income taxes and undisbursed income of subsidiary	100			(21		)	22

	Income tax benefit	(29		)	(24		)	(19		)
	Income before undisbursed income of subsidiary	129			3			42

	Undisbursed income of subsidiary	167			166			132

	Net income	295			168			174

	Preferred stock dividend and discount accretion	30			28			—

	Net income available to common stockholders	$	265		$	141		$	174


	Net income	$	295		$	168		$	174

Other comprehensive (loss) income(1)	(95		)	89			10

Total comprehensive income	$	200		$	258		$	184


(1)	See Consolidated Statements of Comprehensive Income for other comprehensive income detail.


Condensed Statements of Cash Flows	2013			2012			2011
Cash flows from operating activities:
Net income	$	295		$	168		$	174

Adjustments to reconcile net income to net cash provided by operating activities:
Undisbursed income of subsidiaries	(167		)	(166		)	(132		)
Stock-based compensation expense	9			11			8

Deferred income tax (benefit) expense	(18		)	7			6

Decrease in other assets	7			35			4

Decrease in other liabilities	(9		)	(18		)	(9		)
Net cash provided by operating activities	118			38			51

Cash flows from investing activities:
Principal payments received on securities available for sale	1			2			3

Purchases of securities available for sale	(2		)	—			—

Capital contributed to subsidiary	—			(215		)	(645		)

Repayments from (loan to) subsidiary	—			215			(215		)

Acquisitions, net of cash and cash equivalents	—			—			(43		)

Repayment of ESOP loan receivable	1			1			2

Other, net	(1		)	—			—

Net cash provided by (used in) investing activities	—			3			(898		)

Cash flows from financing activities:
Proceeds from long-term borrowings, net	—			—			299

Advance from subsidiary	—			—			9

Issuance of common stock in follow-on stock offerings, net	—			—			468

Issuance of preferred stock, net	—			—			338

Purchase of treasury stock	—			—			(127		)

Proceeds from exercise of stock options	—			—			6

Dividends paid on preferred stock	(30		)	(28		)	—

Dividends paid on common stock	(112		)	(112		)	(175		)
Net cash (used in) provided by financing activities	(143		)	(140		)	818

Net decrease in cash and cash equivalents	(25		)	(99		)	(29		)
Cash and cash equivalents at beginning of year	415			514			543

Cash and cash equivalents at end of year	$	390		$	415		$	514

Summary_of_Significant_Account1

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2013
Accounting Policies [Abstract]	'
Principles of Consolidation	'
	Principles of Consolidation
	Our Consolidated Financial Statements include the accounts of the Company and its subsidiaries. We have eliminated all significant intercompany balances in consolidation.
Subsequent Events	'
	Subsequent Events
	We reviewed subsequent events and determined that no further disclosures or measurements were required.
Cash and Cash Equivalents	'
	Cash and Cash Equivalents
	For purposes of our Consolidated Statement of Cash Flows, cash and cash equivalents include cash and due from banks, money market investments, and federal funds sold which have an original term of less than three months.
Investment Securities	'
	Investment Securities
	We have classified our investments in debt and equity securities as held to maturity or available for sale. We classify investment securities as held to maturity if we have the positive intent and ability to hold them to maturity. Held to maturity securities are reported at amortized cost. We classify investment securities not classified as held to maturity as available for sale, and report them at fair value with unrealized gains and losses, net of deferred taxes, reported in other comprehensive income as a separate component of stockholders’ equity.
	We are required to maintain an investment in common stock of the Federal Home Loan Bank (“FHLB”) of New York and Boston as well as the Federal Reserve Bank because our Bank is a member of the FHLB and the Federal Reserve System. We consider these stocks to be nonmarketable equity securities and carry them at cost.
	We conduct a quarterly review and evaluation of our investment securities portfolio to determine if any declines in fair value below amortized cost are other than temporary. In making this determination, we consider some or all of the following factors: the period of time the securities have been in an unrealized loss position, the percentage decline in fair value in comparison to the securities’ amortized cost, credit rating, the financial condition of the issuer and guarantor, where applicable, the delinquency or default rates of underlying collateral, credit enhancement, projected losses, level of credit loss, and projected cash flows. If we intend to sell a security with a fair value below amortized cost or if it is more likely than not that we will be required to sell such a security before recovery, we record an other than temporary impairment charge through current period earnings for the full decline in fair value below amortized cost. For debt securities that we do not intend to sell or it is more likely than not that we will not be required to sell before recovery, we record an other than temporary impairment charge through current period earnings for the amount of the valuation decline below amortized cost that is attributable to credit losses. The remaining difference between the debt security’s fair value and amortized cost (that is, decline in fair value not attributable to credit losses) is recognized in other comprehensive income.
	Our investment securities portfolio includes residential mortgage-backed securities and collateralized mortgage obligations. As the underlying collateral of each of these securities is comprised of a large number of similar residential mortgage loans for which prepayments are probable and the timing and amount of such prepayments can be reasonably estimated, we consider estimates of future principal prepayments of these underlying residential mortgage loans in the calculation of the constant effective yield used to apply the interest method for income recognition, with retroactive adjustments made as warranted.
	Purchases and sales of investment securities are recorded on trade date, with realized gains and losses on sales included in our Consolidated Statements of Income using the specific identification method. We amortize premiums and accrete discounts on our investment securities to interest income utilizing the interest method.
Loans and Leases	'
	Loans and Leases
	Loans we originate and intend to hold in our portfolio are stated at the principal amount outstanding, adjusted for unamortized deferred fees and costs which we amortize to interest income over the expected life of the loan using the interest method. We discontinue accrual of interest on originated loans after payments become more than 90 days past due, or earlier if we do not expect the full collection of principal or interest, with the exception of credit cards. Credit cards are placed on nonaccrual status at 180 days past due. The delinquency status is based upon the contractual terms of the loans. We reverse all uncollected interest income that we previously recognized on nonaccrual loans. When we have doubt as to the collectibility of a loan’s principal, we apply interest payments to principal. With the exception of residential mortgage loans that are well secured and in the process of collection, cash receipts received on nonperforming impaired loans are first applied to the loan’s principal. Once the remaining principal balance has been collected in full, cash receipts are then applied as recoveries of any partially charged-off amount on the loan. Once a loan’s principal balance, including any previously charged-off amounts are collected in full, cash receipts are recorded as interest income. For residential mortgage loans, where the loan is both well secured and in the process of collection, we recognize interest income on a cash basis. Interest income on performing troubled debt restructurings, which are considered impaired loans, are applied in accordance with the terms of the modified loan.
	We return loans to accrual status when principal and interest payments are current, we expect full collectibility of principal and interest, and a consistent repayment record, generally six consecutive payments, has been demonstrated.
	We charge loans off against our allowance for loan losses when it becomes evident that we will not fully collect the balance of the loan. For business and commercial real estate loans, we record a charge off when it is determined that the collection of all or a portion of a loan may not be collected and the amount of that loss is reasonably estimable. For our consumer loans secured by real estate, including our residential mortgages, home equity loans and home equity lines of credit, we order broker price opinions (“BPOs”) at 90 days past due and record partial or full charge-offs based upon the results of such valuations by no later than 180 days past due. All other closed end consumer loans are charged off at 120 days past due and all other open ended consumer lines, including credit card loans, are charged off at 180 days past due.
	We consider a loan impaired when, based on current information, it is probable that we will be unable to collect all amounts of principal and interest due under the original terms of the agreement. Nonaccrual business and commercial real estate loans greater than $200 thousand are evaluated individually for impairment. Additionally, all loans modified in a troubled debt restructuring (“TDR”) are considered to be impaired, even if the principal balance is less than $200 thousand. We measure the impairment in these loans based on the present value of expected future cash flows discounted at the loan’s effective interest rate or, as a practical alternative, the loan’s observable market price or the fair value of the underlying collateral, if the loan is collateral dependent.
	At origination, a determination is made whether a loan will be held in our portfolio or is intended for sale in the secondary market. Loans that will be held in our portfolio are carried at amortized cost. Beginning in the second quarter of 2011, we elected the fair value option for substantially all residential mortgage loans held for sale as we believe the fair value measurement of such loans reduces certain timing differences in our Statement of Income and better aligns with our management of the portfolio from a business perspective. This loan by loan election is made at the time of origination and is irrevocable. Residential mortgage loans held for sale for which the fair value option has not been elected, are recorded at the lower of the aggregate cost or market value (“LOCOM”). For residential mortgage loans held for sale where we have elected the fair value option, any change in fair value subsequent to origination is recognized immediately in earnings in mortgage banking income. For residential mortgage loans held for sale that are recorded at LOCOM, we recognize any subsequent decreases in fair value in a valuation allowance through a charge to earnings at the time the decline in value occurs. We include gains and losses occurring during the holding period as well as those resulting from sales of our loans held for sale in mortgage banking income.
Acquired Loans	'
	Acquired Loans
	Loans that we acquired in acquisitions subsequent to January 1, 2009 were recorded at fair value with no carryover of the related allowance for loan losses at the time of acquisition. Determining the fair value of the loans involved estimating the amount and timing of principal and interest cash flows expected to be collected on the loans and discounting those cash flows at a market rate of interest.
	We have acquired loans in four separate acquisitions after January 1, 2009. For each acquisition, we reviewed all loans greater than $1 million and considered the following factors as indicators that such an acquired loan had evidence of deterioration in credit quality and was therefore in the scope of Accounting Standards Codification (“ASC”) 310-30 (Loans and Debt Securities Acquired with Deteriorated Credit Quality):

	•	Loans that were 90 days or more past due;

	•	Loans that had an internal risk rating of substandard or worse. Substandard is consistent with regulatory definitions and is defined as having a well defined weakness that jeopardizes liquidation of the loan;

	•	Loans that were classified as nonaccrual by the acquired bank at the time of acquisition; or

	•	Loans that had been previously modified in a troubled debt restructuring.

	Individual acquired loans determined to have evidence of deterioration in credit quality are accounted for individually in accordance with ASC 310-30. Any acquired loans that were not individually in the scope of ASC 310-30 because they did not meet the criteria above were either (i) pooled into groups of similar loans based on the borrower type, loan purpose, and collateral type and accounted for under ASC 310-30 by analogy or (ii) accounted for under ASC 310-20 (Nonrefundable Fees and Other Costs.)
	Based on the guidance included in the December 18, 2009 letter from the AICPA Depository Institutions Panel to the Office of the Chief Accountant of the SEC, we have made an accounting policy election to apply ASC 310-30 by analogy to qualifying acquired pools of loans that (i) were acquired in a business combination or asset purchase, (ii) resulted in recognition of a discount attributable, at least in part, to credit quality; and (iii) were not subsequently accounted for at fair value.
	Acquired loans accounted for under ASC 310-30
	The excess of expected cash flows from acquired loans over the estimated fair value of acquired loans at acquisition is referred to as the accretable discount and is recognized into interest income over the remaining life of the acquired loans using the interest method. The difference between contractually required payments at acquisition and the cash flows expected to be collected at acquisition is referred to as the nonaccretable discount. The nonaccretable discount represents estimated future credit losses expected to be incurred over the life of the acquired loans. Subsequent decreases to the expected cash flows require us to evaluate the need for an addition to the allowance for loan losses. Subsequent improvements in expected cash flows result in the reversal of a corresponding amount of the nonaccretable discount which we then reclassify as accretable discount that is recognized into interest income over the remaining life of the loan using the interest method. Our evaluation of the amount of future cash flows that we expect to collect takes into account actual credit performance of the acquired loans to date and our best estimates for the expected lifetime credit performance of the loans using currently available information. Charge-offs on acquired loans would be first applied to the nonaccretable discount portion of the fair value adjustment. To the extent that we experience a deterioration in credit quality in our expected cash flows subsequent to the acquisition of the loans, an allowance for loan losses would be established based on our estimate of future credit losses over the remaining life of the loans.

	In accordance with ASC 310-30, recognition of income is dependent on having a reasonable expectation about the timing and amount of cash flows expected to be collected. We perform such an evaluation on a quarterly basis on both our acquired loans individually accounted for under ASC 310-30 and those in pools accounted for under ASC 310-30 by analogy.

	Cash flows for acquired loans individually accounted for under ASC 310-30 are estimated on a quarterly basis. Based on this evaluation, a determination is made as to whether or not we have a reasonable expectation about the timing and amount of cash flows. Such an expectation includes cash flows from normal customer repayment, foreclosure or other collection efforts. Cash flows for acquired loans accounted for on a pooled basis under ASC 310-30 by analogy are also estimated on a quarterly basis. For residential real estate, home equity and other consumer loans, cash flow loss estimates are calculated by a vintage and FICO based model which incorporates a projected forward loss curve. For commercial loans, lifetime loss rates are assigned to each pool with consideration given for pool make-up, including risk rating profile. Lifetime loss rates are developed from internally generated loss data and are applied to each pool.

	To the extent that we cannot reasonably estimate cash flows, interest income recognition is discontinued. The unit of account for loans in pools accounted for under ASC 310-30 by analogy is the pool of loans. Accordingly, as long as we can reasonably estimate cash flows for the pool as a whole, accretable yield on the pool is recognized and all individual loans within the pool - even those more than 90 days past due - would be considered to be accruing interest in our financial statement disclosures, regardless of whether or not we expected to collect any principal or interest cash flows on an individual loan 90 days or more past due.
Allowance for Loan Losses	'
	Allowance for Loan Losses
	We determined our allowance for loan losses by portfolio segment, which consists of commercial loans and consumer loans. Our commercial loan portfolio includes both business and commercial real estate loans. Our consumer loan portfolio includes residential real estate, home equity, indirect auto, credit card and other consumer loans. We further segregate these portfolios between loans which are accounted for under the amortized cost method (referred to as “originated” loans) and loans acquired (referred to as “acquired” loans), as acquired loans were originally recorded at fair value, which included an estimate of lifetime credit losses, resulting in no carryover of the related allowance for loan losses.
	Originated loans
	We establish our allowance for loan losses through a provision for credit losses. The level of the allowance for loan losses is based on our evaluation of the credit quality of our loan portfolio. This evaluation, which includes a review of loans on which full collectability may not be reasonably assured, considers, among other matters, the estimated fair value of the underlying collateral, economic conditions, historical net loan loss experience, and other factors that warrant recognition in determining our allowance for loan losses. We continue to monitor and modify the level of our allowance for loan losses to ensure it is adequate to cover losses inherent in our loan portfolio.
	For our originated loans, our allowance for loan losses consists of the following elements: (i) valuation allowances based on net historical loan loss experience for similar loans with similar inherent risk characteristics and performance trends, adjusted, as appropriate, for qualitative risk factors specific to respective loan types; and (ii) specific valuation allowances based on probable losses on specifically identified impaired loans.
	Impaired loans
	For our originated loans, when current information and events indicate that it is probable that we will be unable to collect all amounts of principal and interest due under the original terms of a business or commercial real estate loan greater than $200 thousand, such loan will be classified as impaired. Additionally, all loans modified in a TDR are considered impaired. The need for specific valuation allowances are determined for impaired loans and recorded as necessary. For impaired loans, we consider the fair value of the underlying collateral, less estimated costs to sell, if the loan is collateral dependent, or we use the present value of estimated future cash flows in determining the estimates of impairment and any related allowance for loan losses for these loans. Confirmed losses are charged off immediately. Prior to a loan becoming impaired, we typically would obtain an appraisal through our internal loan grading process to use as the basis for the fair value of the underlying collateral.
	Commercial loan portfolio
	We estimate the allowance for our commercial loan portfolio by applying a historic loss rate to loans based on their type and loan grade. This amount is then adjusted, as necessary, for qualitative considerations to reflect changes in underwriting, market or industry conditions, or based on changes in trends in the composition of the portfolio, including risk composition, seasoning, and underlying collateral. Our loan grading system is described in “Management’s Discussion and Analysis of Financial Condition and Results of Operations” under the heading “Credit Risk.”
	Consumer loan portfolio
	We estimate the allowance for loan losses for our consumer loan portfolio by estimating the amount of loans that will eventually default based on their current delinquency severity. We then apply a loss rate to the amount of loans that we predict will default based on our historical net loss experience. This amount is then adjusted, as necessary, for qualitative considerations to reflect changes in underwriting, market or industry conditions or based on changes in trends in the composition of the portfolio, including risk composition, seasoning, and underlying collateral. We obtain and review refreshed FICO scores on a quarterly basis, and trends are evaluated for consideration as a qualitative adjustment to the allowance. Other qualitative considerations include, but are not limited to, the evaluation of trends in property values, building permits and unemployment.
	Acquired Loans
	Acquired loans accounted for under ASC 310-30 (including those accounted for under ASC 310-30 by analogy)
	For our acquired loans accounted for under ASC 310-30, our allowance for loan losses is estimated based upon our expected cash flows for these loans. To the extent that we experience a deterioration in borrower credit quality resulting in a decrease in our expected cash flows subsequent to the acquisition of the loans, an allowance for loan losses would be established based on our estimate of future credit losses over the remaining life of the loans.
	Acquired loans accounted for under ASC 310-20
	We establish our allowance for loan losses through a provision for credit losses based upon an evaluation process that is similar to our evaluation process used for originated loans. This evaluation, which includes a review of loans on which full collectability may not be reasonably assured, considers, among other matters, the estimated fair value of the underlying collateral, economic conditions, historical net loan loss experience, carrying value of the loans, which includes the remaining net purchase discount or premium, and other factors that warrant recognition in determining our allowance for loan losses.
Premises and Equipment	'
	Premises and Equipment
	Our premises and equipment are carried at cost, net of accumulated depreciation and amortization. We compute depreciation on the straight-line method over the estimated useful lives of the assets. We amortize our leasehold improvements on the straight-line method over the lesser of the life of the improvements or the lease term. We generally depreciate buildings over a period of 20 to 39 years, furniture and equipment over a period of 3 to 10 years, and capital leases over the lesser of the useful life or the respective lease term.
Goodwill and Intangible Assets	'
	Goodwill and Intangible Assets
	We record the excess of the cost of acquired entities over the fair value of identifiable tangible and intangible assets acquired less the fair value of liabilities assumed as goodwill. We amortize our acquired identifiable intangible assets with definite useful economic lives over their useful economic life utilizing an accelerated amortization method. On a periodic basis, we assess whether events or changes in circumstances indicate that the carrying amounts of our core deposit and other intangible assets may be impaired. We do not amortize goodwill or any acquired identifiable intangible assets with an indefinite useful economic life, but we review them for impairment on an annual basis, or when events or changes in circumstances indicate that the carrying amounts may be impaired. Goodwill is reviewed for impairment at the reporting unit level. We define a reporting unit as a distinct, separately identifiable component of one of our operating segments for which complete, discrete financial information is available and reviewed regularly by that segment’s management.
	We have the option to first assess qualitative factors to determine whether there are events or circumstances that exist that make it more likely than not that the fair value of the reporting unit is less than its carrying amount (Step 0). If it is more likely than not that the fair value of the reporting unit is less than its carrying amount, or if we choose to bypass the qualitative assessment, we proceed to compare each reporting unit's fair value to carrying value to identify potential impairment (Step 1). If the estimated fair value of a reporting unit exceeds its carrying amount, goodwill of the reporting unit is not considered impaired. However, if the carrying amount of the reporting unit were to exceed its estimated fair value, a second step (Step 2) would be performed that would compare the implied fair value of the reporting unit's goodwill with the carrying amount of the goodwill for the reporting unit. The implied fair value of goodwill is determined in the same manner as goodwill that is recognized in a business combination. Significant judgment and estimates are involved in estimating the fair value of the assets and liabilities of the reporting units.
	We perform our annual impairment review of goodwill on November 1 of each year utilizing valuation methods we believe appropriate, given the availability and applicability of market-based inputs for those methods.
Derivative Instruments	'
	Derivative Instruments
	We use interest rate swaps to manage our interest rate risk. We also act as an interest rate swap counterparty for certain commercial customers, and manage the interest rate risk of these positions by entering into offsetting interest rate swap agreements with third parties. Interest rate swaps are recorded on our Consolidated Statements of Condition as either an asset or liability at estimated fair value and recognition of the changes in fair value in the income statement depends upon whether the interest rate swaps are in a designated hedging relationship. The change in the fair value of interest rate swaps designated as fair value hedges, including both the effective and ineffective portions, is recognized in earnings. These amounts are offset by the change in fair value of the hedged item, which is also recognized in earnings. The gain or loss associated with the effective portion of our cash flow hedges is recognized in other comprehensive income and is subsequently reclassified into earnings in the period during which the hedged forecasted transactions affects earnings. The gain or loss associated with the ineffective portion of our cash flow hedges is recognized immediately in earnings. We formally document our risk management objectives, strategy, and the relationship between the hedging instrument and the hedged items. We evaluate the effectiveness of the hedge relationship both at inception of the hedge and on an ongoing basis. If the interest rate swap is not designated in a hedge relationship, gains or losses reflecting changes in fair value are recorded in earnings.
Employee Benefits	'
	Employee Benefits
	We maintain an employer sponsored 401(k) plan where participants may make contributions in the form of salary deferrals and we provide matching contributions in accordance with the terms of the plan. Contributions due under the terms of our defined contribution plans are accrued as earned by employees.
	We also maintain noncontributory, qualified, defined benefit pension plans for certain employees who meet age and service requirements. We provide post-retirement benefits, principally health care and group life insurance, to employees who meet certain age and service requirements. We have frozen all benefit participation in our pension and post-retirement plans. Pension plans that we acquired in connection with our previous whole-bank acquisitions were frozen prior to or shortly after the completion of the transactions. The actuarially determined pension benefit in the form of a life annuity is based on the employee’s combined years of service, age, and compensation. The cost of our pension plan is based on actuarial estimates of current and future benefits for employees and is charged to current operating expenses.
	We recognize an asset for a plan’s overfunded status or a liability for a plan’s underfunded status in our financial statements. We report changes in the funded status of our pension and postretirement plans as a component of other comprehensive income, net of applicable taxes, in the year in which changes occur.
	We measure our plans’ assets and obligations that determine its future funded status as of December 31st each year.
Stock-Based Compensation	'
	Stock-Based Compensation
	We maintain various long-term incentive stock benefit plans under which we grant stock options, restricted stock awards, and restricted stock units to certain key employees and directors. We recognize compensation expense in our income statement over the requisite service period, based on the grant-date fair value of the award. The fair values of stock options are estimated using the Black-Scholes option pricing model. For restricted stock awards and units, we recognize compensation expense on a straight-line basis over the vesting period for the fair value of the award, measured at the grant date.
Income Taxes	'
	Income Taxes
	We account for income taxes under the asset and liability method. Our deferred tax assets and liabilities are reflected at currently enacted income tax rates applicable to the periods in which we expect the deferred tax assets or liabilities to be realized or settled. Deferred tax assets are recognized only to the extent that it is probable that sufficient taxable profit will be available against which those unused tax losses, unused tax credits or deductible temporary differences can be utilized. As changes in tax laws or rates are enacted, we adjust our deferred tax assets and liabilities through income tax expense. We recognize penalties and accrued interest related to unrecognized tax benefits in income tax expense.
Earnings per Share	'
	Earnings per Share
	We compute earnings per common share (“EPS”) in accordance with the two-class method, which requires that our unvested restricted stock awards that contain nonforfeitable rights to dividends be treated as participating securities in the computation of EPS pursuant to the two-class method. The two-class method is an earnings allocation that determines EPS for each class of common stock and participating security. Our basic EPS is computed by dividing net income allocable to common stockholders by the weighted average number of our common shares outstanding for the period. Our diluted EPS reflects the potential dilution that could occur if securities or other contracts to issue common stock were exercised or converted into common stock or resulted in the issuance of common stock that then shared in our earnings. Unallocated common shares held by the Employee Stock Ownership Plan (“ESOP”) are not included in the weighted-average number of common shares outstanding for either basic or diluted earnings per share calculations.
Investment and Fiduciary Services	'
	Investment and Fiduciary Services
	Assets that we hold in a fiduciary or agency capacity for our customers are not included in our accompanying Consolidated Statements of Condition, since these assets are not our assets and we are not the primary beneficiary. We recognize fee income from the management of these assets using the accrual method.
Use of Estimates	'
	Use of Estimates
	We have made a number of estimates and assumptions relating to the reporting of assets and liabilities and disclosure of contingent assets and liabilities in order to prepare these financial statements in conformity with GAAP. The estimates and assumptions that we deem to be critical involve our accounting policies relating to our valuation of our investment securities, prepayment assumptions on our collateralized mortgage obligations and mortgage-backed securities, the accounting treatment and valuation of our acquired loans, adequacy of our allowance for loan losses, and the analysis of the carrying value of goodwill for impairment. These estimates and assumptions are based on management’s best estimates and judgment and we evaluate them on an ongoing basis using historical experience and other factors, including the current economic environment. We adjust our estimates and assumptions when facts and circumstances dictate. As future events cannot be determined with precision, actual results could differ significantly from our estimates.
Accounting Standards Adopted in 2013	'
	Accounting Standards Adopted in 2013
	In December 2011 and January 2013, the Financial Accounting Standards Board (“FASB”) announced new disclosure requirements for offsetting arrangements. The new rules seek to enhance the comparability of financial statements for users by providing information about offsetting and related arrangements. The rules require entities to disclose gross amounts subject to right of set-off, amounts set-off, net amounts presented in the balance sheet, amounts subject to master netting agreements that have not been offset including related amounts of financial collateral. The requirements became effective for us beginning January 1, 2013 and did not have a significant impact on our financial statements.
Accounting Standards Not Adopted as of December 31, 2013	'
	Accounting Standards Not Yet Required to be Adopted as of December 31, 2013
	In February 2013, the FASB issued guidance for the recognition, measurement, and disclosure of obligations resulting from joint and several liability arrangements for which the total amount of the obligation is fixed at the reporting date. Examples of obligations within the scope of the guidance include debt arrangements, other contractual obligations, and settled litigation and judicial rulings. The guidance becomes effective for us on January 1, 2014 and we do not expect it will have a significant impact on our financial statements.
	In June 2013, the FASB released amended guidance to improve the accounting for determining whether an entity is an investment company. The amendments change the approach to assessing investment company status and provide two required fundamental characteristics and five typical characteristics for determining whether an entity is an investment company. The guidance becomes effective for us on January 1, 2014 and we do not expect it will have a significant impact on our financial statements.
	In July 2013, the FASB issued guidance to reduce diversity in practice related to the financial statement presentation of an unrecognized tax benefit when a net operating loss carryforward, a similar tax loss, or a tax credit carryforward exists. Some entities present the unrecognized tax benefit as a liability and other entities present the unrecognized tax benefit as a reduction to a deferred tax asset. The guidance requires an unrecognized tax benefit to be presented in the financial statements as a reduction to a deferred tax asset, and becomes effective for us on January 1, 2014. We do not expect this to have a significant impact on our financial statements.
	In January 2014, the FASB issued guidance on accounting for investments by a reporting entity in flow-through limited liability entities that manage or invest in affordable housing projects that qualify for the low-income housing tax credit. The low-income housing tax credit program is designed to encourage private capital investment in the construction and rehabilitation of low-income housing. The guidance becomes effective for us on January 1, 2015 with early adoption permitted. We have not decided on whether to early adopt and we do not expect this to have a significant impact on our financial statements.
	In January 2014, the FASB issued guidance on when a creditor should reclassify a collateralized mortgage loan such that the loan should be derecognized and the collateral asset recognized. The objective of the guidance is to reduce diversity by clarifying when an in substance repossession or foreclosure occurs, that is, when a creditor should be considered to have received physical possession of residential real estate property collateralizing a consumer mortgage loan such that the loan receivable should be derecognized and the real estate property recognized. The guidance becomes effective for us on January 1, 2015 with early adoption permitted. We have not decided on whether to early adopt and we do not expect this to have a significant impact on our financial statements.

Acquisitions_Tables

Acquisitions (Tables)	12 Months Ended
	Dec. 31, 2013
Business Combinations [Abstract]	'
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]	'
	The following table summarizes the estimated fair values of the assets acquired and liabilities assumed at the date of acquisition:


	Recognized amounts of identifiable assets acquired and (liabilities assumed), at fair value:
	Cash and cash equivalents (1)	$	7,360

	Loans	1,600

	Core deposit and other intangibles	85

	Other assets	72

	Total assets acquired	9,117


	Deposits(2)	(9,855		)
	Other liabilities	(33		)
	Total liabilities assumed	(9,887		)
	Goodwill	$	770


	(1)	Amount is net of $772 million deposit premium paid to HSBC.

	(2)	Deposits reported exclude $0.5 billion in municipal deposits that were subject to a price concession.
Information about Acquired Entity Loan Portfolio	'
	Information about the acquired HSBC loan portfolio as of May 18, 2012 is in the following table, and excludes home equity lines of credit, credit card, and any other line of credit:


	Contractually required principal and interest at acquisition	$	758

	Contractual cash flows not expected to be collected (nonaccretable discount)	(16		)
	Expected cash flows at acquisition	742

	Interest component of expected cash flows (accretable discount)	(91		)
	Fair value of acquired loans (excluding lines of credit)	$	651

Investment_Securities_Tables

Investment Securities (Tables)	12 Months Ended
	Dec. 31, 2013
Investments, Debt and Equity Securities [Abstract]	'
The amortized cost, gross unrealized gains and losses, and approximate fair value of investment securities	'
	The amortized cost, gross unrealized gains and losses, and fair value of our investment securities are as follows at December 31:


		Amortized			Unrealized			Unrealized			Fair
	2013	cost			gains			losses			value
	Investment securities available for sale:
	Debt securities:
	States and political subdivisions	$	516		$	14		$	—		$	529

	U.S. Treasury	20			—			—			20

	U.S. government agencies	4			—			—			4

	U.S. government sponsored enterprises	302			7			(1		)	308

	Corporate	859			19			(10		)	868

	Trust preferred securities	4			—			—			4

	Total debt securities	1,705			40			(12		)	1,734

	Mortgage-backed securities:
	Residential mortgage-backed securities:
	Government National Mortgage Association	41			1			(2		)	40

	Federal National Mortgage Association	134			5			—			139

	Federal Home Loan Mortgage Corporation	154			5			—			159

	Collateralized mortgage obligations:

	Federal National Mortgage Association	797			—			(36		)	761

	Federal Home Loan Mortgage Corporation	396			—			(17		)	379

	Non-agency issued	12			1			—			13

	Total collateralized mortgage obligations	1,205			1			(54		)	1,152

	Total residential mortgage-backed securities	1,534			12			(56		)	1,490

	Commercial mortgage-backed securities, non-agency issued	1,759			74			(2		)	1,831

	Total mortgage-backed securities	3,294			85			(58		)	3,321

	Collateralized loan obligations, non-agency issued	1,392			40			(2		)	1,431

	Asset-backed securities collateralized by:
	Student loans	306			6			—			312

	Credit cards	73			—			(1		)	73

	Auto loans	331			4			—			335

	Other	186			1			(1		)	186

	Total asset-backed securities	896			11			(2		)	905

	Other	33			1			—			33

	Total securities available for sale	$	7,319		$	178		$	(74	)	$	7,423

	Investment securities held to maturity:
Debt securities, U.S. government agencies	$	5		$	—		$	—		$	5

Residential mortgage-backed securities:
Government National Mortgage Association	17			—			—			17

Federal National Mortgage Association	146			—			(3		)	143

Federal Home Loan Mortgage Corporation	81			—			(1		)	81

Collateralized mortgage obligations:
Government National Mortgage Association	1,713			26			(12		)	1,727

Federal National Mortgage Association	1,074			—			(47		)	1,027

Federal Home Loan Mortgage Corporation	1,007			12			(30		)	989

Total collateralized mortgage obligations	3,793			39			(90		)	3,742

Total residential mortgage-backed securities	4,037			40			(94		)	3,983

Total securities held to maturity	$	4,042		$	40		$	(94	)	$	3,988



	Amortized			Unrealized			Unrealized			Fair
2012	cost			gains			losses			value
Investment securities available for sale:
Debt securities:
States and political subdivisions	$	587		$	21		$	—		$	608

U.S. Treasury	20			1			—			21

U.S. government agencies	5			—			—			5

U.S. government sponsored enterprises	390			13			—			404

Corporate	812			28			(3		)	837

Trust preferred securities	16			—			(1		)	14

Total debt securities	1,830			63			(5		)	1,889

Mortgage-backed securities:
Residential mortgage-backed securities:
Government National Mortgage Association	68			2			—			70

Federal National Mortgage Association	394			20			—			414

Federal Home Loan Mortgage Corporation	343			12			—			355

Collateralized mortgage obligations:
Government National Mortgage Association	1,060			31			—			1,091

Federal National Mortgage Association	1,460			15			(1		)	1,474

Federal Home Loan Mortgage Corporation	1,036			11			—			1,047

Non-agency issued	60			2			—			61

Total collateralized mortgage obligations	3,617			58			(1		)	3,674

Total residential mortgage-backed securities	4,422			93			(1		)	4,513

Commercial mortgage-backed securities, non-agency issued	1,930			132			(1		)	2,060

Total mortgage-backed securities	6,351			225			(3		)	6,573

Collateralized loan obligations, non-agency issued	1,510			35			(1		)	1,545

Asset-backed securities collateralized by:
Student loans	378			12			—			390

Credit cards	74			1			—			75

Auto loans	367			6			—			372

Other	118			1			—			119

Total asset-backed securities	936			20			—			956

Other	31			1			—			31

Total securities available for sale	$	10,658		$	344		$	(8	)	$	10,994

Investment securities held to maturity:
Residential mortgage-backed securities:
Government National Mortgage Association	$	6		$	—		$	—		$	6

Federal National Mortgage Association	5			—			—			5

Federal Home Loan Mortgage Corporation	7			—			—			7

Collateralized mortgage obligations:
Government National Mortgage Association	1,006			49			—			1,055

Federal National Mortgage Association	18			1			—			19

Federal Home Loan Mortgage Corporation	257			24			—			281

Total collateralized mortgage obligations	1,282			73			—			1,355

Total securities held to maturity	$	1,300		$	74		$	—		$	1,374

Available for Sale Securities and Held to Maturity Securities Continuous Unrealized Loss Position	'
	The table below details certain information regarding our investment securities that were in an unrealized loss position at the dates indicated by the length of time those securities were in a continuous loss position:


		Less than 12 months									12 months or longer								Total
		Fair			Unrealized						Fair			Unrealized					Fair			Unrealized
	31-Dec-13	value			losses			Count			value			losses			Count		value			losses			Count
	Investment securities available for sale:
	Debt securities:
	States and political subdivisions	$	13		$	—		25			$	3		$	—		7		$	16		$	—		32

	U.S. government agencies	1			—			5			2			—			2		3			—			7

	U.S. government sponsored enterprises	70			(1		)	6			—			—			—		70			(1		)	6

	Corporate	228			(8		)	164			74			(2		)	23		302			(10		)	187

	Trust preferred securities	4			—			1			—			—			—		4			—			1

	Total debt securities	315			(9		)	201			79			(2		)	32		394			(12		)	233

	Mortgage-backed securities:
	Residential mortgage-backed securities:
	Government National Mortgage Association	—			—			—			19			(2		)	6		19			(2		)	6

	Federal National Mortgage Association	—			—			3			—			—			3		1			—			6

	Collateralized mortgage obligations:

	Federal National Mortgage Association	744			(36		)	41			—			—			—		744			(36		)	41

	Federal Home Loan Mortgage Corporation	361			(17		)	19			—			—			—		361			(17		)	19

	Non-agency issued	1			—			3			—			—			—		1			—			3

	Total collateralized mortgage obligations	1,106			(54		)	63			—			—			—		1,106			(54		)	63

	Total residential mortgage-backed securities	1,106			(54		)	66			19			(2		)	9		1,125			(56		)	75

	Commercial mortgage-backed securities, non-agency issued	158			(2		)	15			12			—			3		170			(2		)	18

	Total mortgage-backed securities	1,264			(56		)	81			32			(2		)	12		1,296			(58		)	93

	Collateralized loan obligations, non-agency issued	261			(2		)	28			3			—			1		264			(2		)	29

	Asset-backed securities collateralized by:
	Student loans	67			—			8			—			—			—		67			—			8

	Credit card	36			(1		)	4			—			—			—		36			(1		)	4

	Auto loans	25			—			5			—			—			—		25			—			5

	Other	72			(1		)	11			—			—			—		72			(1		)	11

	Total asset-backed securities	200			(2		)	28			—			—			—		200			(2		)	28

	Other	14			—			3			8			—			2		22			—			5

	Total securities available for sale in an unrealized loss position	$	2,054		$	(69	)	341			$	122		$	(5	)	47		$	2,176		$	(74	)	388




		Less than 12 months									12 months or longer								Total
	Fair			Unrealized						Fair			Unrealized					Fair			Unrealized
31-Dec-13	value			losses			Count			value			losses			Count		value			losses			Count
Investment securities held to maturity:
Debt securities, U.S. government agencies	$	5		$	—		1			$	—		$	—		—		$	5		$	—		1

Residential mortgage-backed securities:
Government National Mortgage Association	11			—			4			—			—			—		11			—			4

Federal National Mortgage Association	119			(3		)	30			—			—			—		119			(3		)	30

Federal Home Loan Mortgage Corporation	59			(1		)	15			—			—			—		59			(1		)	15

Collateralized mortgage obligations:
Government National Mortgage Association	520			(12		)	58			—			—			—		520			(12		)	58

Federal National Mortgage Association	1,011			(47		)	59			—			—			—		1,011			(47		)	59

Federal Home Loan Mortgage Corporation	629			(30		)	35			22			(1		)	1		652			(30		)	36

Total collateralized mortgage obligations	2,160			(89		)	152			22			(1		)	1		2,182			(90		)	153

Total residential mortgage-backed securities	2,348			(94		)	201			22			(1		)	1		2,371			(94		)	202

Total securities held to maturity in an unrealized loss position	$	2,353		$	(94	)	202			$	22		$	(1	)	1		$	2,376		$	(94	)	203



	Less than 12 months									12 months or longer								Total
	Fair			Unrealized						Fair			Unrealized					Fair			Unrealized
31-Dec-12	value			losses			Count			value			losses			Count		value			losses			Count
Investment securities available for sale:
Debt securities:
States and political subdivisions	$	21		$	—		42			$	4		$	—		5		$	26		$	—		47

U.S. government agencies	—			—			—			2			—			2		2			—			2

Corporate	92			(2		)	27			44			(1		)	2		136			(3		)	29

Trust preferred securities	1			—			1			13			(1		)	6		14			(1		)	7

Total debt securities	115			(2		)	70			64			(2		)	15		178			(5		)	85

Mortgage-backed securities:
Residential mortgage-backed securities:
Government National Mortgage Association	23			—			6			—			—			—		23			—			6

Federal National Mortgage Association	1			—			7			—			—			2		2			—			9

Collateralized mortgage obligations:
Federal National Mortgage Association	232			(1		)	12			—			—			—		232			(1		)	12

Federal Home Loan Mortgage Corporation	118			—			6			—			—			—		118			—			6

Non-agency issued	—			—			—			4			—			1		4			—			1

Total collateralized mortgage obligations	350			(1		)	18			4			—			1		354			(1		)	19

Total residential mortgage-backed securities	374			(1		)	31			4			—			3		379			(1		)	34

Commercial mortgage-backed securities, non-agency issued	30			(1		)	5			32			(1		)	4		61			(1		)	9

Total mortgage-backed securities	404			(2		)	36			36			(1		)	7		440			(3		)	43

Collateralized loan obligations, non-agency issued	168			(1		)	25			—			—			—		168			(1		)	25

Asset-backed securities collateralized by:
Student loans	2			—			1			26			—			1		28			—			2

Credit cards	6			—			2			—			—			—		6			—			2

Auto loans	42			—			7			—			—			—		42			—			7

Other	5			—			2			—			—			1		5			—			3

Total asset-backed securities	54			—			12			26			—			2		80			—			14

Other	—			—			—			8			—			3		8			—			3

Total securities available for sale in an unrealized loss position	$	741		$	(5	)	143			$	134		$	(3	)	27		$	874		$	(8	)	170

Investment securities held to maturity:
Residential mortgage-backed securities:
Government National Mortgage Association	$	2		$	—		1			$	—		$	—		—		$	2		$	—		1

Collateralized mortgage obligations:
Government National Mortgage Association	23			—			2			—			—			—		23			—			2

Total securities held to maturity in an unrealized loss position	$	25		$	—		3			$	—		$	—		—		$	25		$	—		3

Scheduled contractual maturities of investment securities	'
	Scheduled contractual maturities of our investment securities were as follows at December 31, 2013:


		Amortized cost			Fair value
	Debt securities:
	Within one year	$	228		$	229

	After one year through five years	875			902

	After five years through ten years	592			592

	After ten years	16			15

	Total debt securities	1,710			1,739

	Mortgage-backed securities	7,331			7,304

	Collateralized loan obligations	1,392			1,431

	Asset-backed securities	896			905

	Other	33			33

		$	11,362		$	11,411

Schedule of Available for Sale Securities Transferred to Held to Maturity Securities [Table Text Block]	'
	On March 29, 2013, we transferred $3 billion of residential mortgage-backed securities from available for sale to held to maturity. The amortized cost, unrealized gains and losses, and fair value of these transferred investment securities immediately prior to the transfer were as follows:


		Amortized			Unrealized			Unrealized			Fair
		cost			gains			losses			value
	Residential mortgage-backed securities:
	Government National Mortgage Association	$	15		$	1		$	—		$	15

	Federal National Mortgage Association	173			12			—			185

	Federal Home Loan Mortgage Corporation	96			5			—			102

	Collateralized mortgage obligations:
	Government National Mortgage Association	885			26			—			910

	Federal National Mortgage Association	1,019			9			(3		)	1,026

	Federal Home Loan Mortgage Corporation	758			7			(2		)	763

	Total collateralized mortgage obligations	2,662			42			(4		)	2,699

	Total residential mortgage-backed securities	$	2,946		$	59		$	(4	)	$	3,001

Loans_and_Leases_Tables

Loans and Leases (Tables)	12 Months Ended
	Dec. 31, 2013
Receivables [Abstract]	'
Summary of loans and leases	'
	Our loans and leases receivable consisted of the following at December 31:


		2013										2012
		Originated			Acquired			Total				Originated			Acquired			Total
	Commercial:
	Real estate	$	5,527		$	1,387		$	6,914			$	4,491		$	1,975		$	6,466

	Construction	828			36			864				552			75			627

	Business	4,876			414			5,290				4,286			667			4,953

	Total commercial	11,231			1,838			13,068				9,330			2,716			12,047

	Consumer:
	Residential real estate	1,902			1,546			3,448				1,724			2,037			3,762

	Home equity	1,618			1,134			2,752				1,286			1,366			2,652

	Indirect auto	1,544			—			1,544				601			—			601

	Credit cards	325			—			325				215			100			315

	Other consumer	302			—			302				215			118			334

	Total consumer	5,691			2,680			8,371				4,042			3,621			7,663

	Total loans and leases	16,922			4,517			21,440				13,372			6,338			19,710

	Allowance for loan losses	(205		)	(4		)	(209		)		(161		)	(2		)	(163		)
	Total loans and leases, net	$	16,717		$	4,514		$	21,230			$	13,211		$	6,336		$	19,547

The outstanding principal balance and the related carrying amount of acquired loans	'
	The outstanding principal balance and the related carrying amount of our acquired loans included in our Consolidated Statements of Condition were as follows at December 31:


		2013			2012
	Credit impaired acquired loans evaluated individually for future credit losses
	Outstanding principal balance	$	18		$	31

	Carrying amount	12			24

	Acquired loans evaluated collectively for future credit losses
	Outstanding principal balance	3,301			4,774

	Carrying amount	3,233			4,690

	Other acquired loans
	Outstanding principal balance	1,321			1,696

	Carrying amount	1,273			1,623

	Total acquired loans
	Outstanding principal balance	4,640			6,501

	Carrying amount	4,517			6,338

Changes in the accretable discount on loans acquired	'
	The following table presents changes in the accretable yield, which includes income recognized from contractual interest cash flows, for the dates indicated. Acquired lines of credit accounted for under ASC 310-20 are not included in this table.


	Balance at January 1, 2012	$	(1,187	)
	HSBC acquisition	(91		)
	Net reclassifications from nonaccretable yield	(28		)
	Accretion	249

	Balance at December 31, 2012	(1,057		)
	Reclassifications from nonaccretable yield	(15		)
	Accretion	199

	Other (1)	22

	Balance at December 31, 2013	$	(851	)


Activity in the allowance for credit losses for the years ended	'
	The following table presents the activity in our allowance for loan losses on originated loans and related recorded investment of the associated loans in our originated loan portfolio segment for the years ended December 31:


		Commercial							Consumer
	Originated loans	Real estate			Business				Residential			Home equity			Indirect auto			Credit cards			Other			Total
																					consumer
	2013
	Allowance for loan losses:
	Balance at beginning of year	$	38		$	99			$	5		$	5		$	3		$	7		$	5		$	161

	Provision for loan losses	17			48				(1		)	6			9			11			8			96

	Charge-offs	(10		)	(31		)		(2		)	(3		)	(3		)	(6		)	(8		)	(63		)
	Recoveries	4			3				1			—			1			1			2			11

	Balance at end of year	$	48		$	119			$	2		$	7		$	10		$	13		$	6		$	205

	Allowance for loan losses:
	Individually evaluated for impairment	$	4		$	2			$	1		$	3		$	—		$	—		$	—		$	9

	Collectively evaluated for impairment	44			117				1			4			10			13			6			196

	Total	$	48		$	119			$	2		$	7		$	10		$	13		$	6		$	205

	Loans receivable:
	Balance at end of year
	Individually evaluated for impairment	$	72		$	59			$	20		$	8		$	1		$	—		$	3		$	163

	Collectively evaluated for impairment	6,282			4,818				1,882			1,610			1,543			325			299			16,759

	Total	$	6,354		$	4,876			$	1,902		$	1,618		$	1,544		$	325		$	302		$	16,922

	2012
	Allowance for loan losses:
	Balance at beginning of year	$	50		$	57			$	4		$	4		$	—		$	—		$	2		$	118

	Provision for loan losses	(7		)	67				3			4			4			8			5			84

	Charge-offs	(7		)	(27		)		(3		)	(4		)	(1		)	(1		)	(4		)	(46		)
	Recoveries	1			2				—			—			—			—			1			6

	Allowance related to loans sold	—			—				—			—			—			—			—			(1		)

	Balance at end of year	$	38		$	99			$	5		$	5		$	3		$	7		$	5		$	161

	Allowance for loan losses:
	Individually evaluated for impairment	$	3		$	5			$	3		$	1		$	—		$	—		$	—		$	11

	Collectively evaluated for impairment	35			94				1			4			3			7			5			150

	Total	$	38		$	99			$	5		$	5		$	3		$	7		$	5		$	161

	Loans receivable:
	Balance at end of year
	Individually evaluated for impairment	$	67		$	58			$	20		$	5		$	—		$	—		$	2		$	152

	Collectively evaluated for impairment	4,977			4,228				1,705			1,281			601			215			214			13,221

	Total	$	5,044		$	4,286			$	1,724		$	1,286		$	601		$	215		$	215		$	13,372



		Commercial							Consumer
Originated loans	Real estate			Business				Residential			Home Equity			Indirect auto			Credit cards			Other			Total
																				Consumer
2011
Allowance for loan losses:
Balance at beginning of year	$	47		$	42			$	2		$	2		$	—		$	—		$	3		$	95

Provision for loan losses	12			30				3			5			—			—			1			51

Charge-offs	(12		)	(17		)		(2		)	(2		)	—			—			(3		)	(36		)

Recoveries	3			3				1			—			—			—			1			8

Balance at end of year	$	50		$	57			$	4		$	4		$	—		$	—		$	2		$	118

Allowance for loan losses:
Individually evaluated for impairment	$	3		$	2			$	2		$	—		$	—		$	—		$	—		$	7

Collectively evaluated for impairment	47			56				2			4			—			—			2			111

Total	$	50		$	57			$	4		$	4		$	—		$	—		$	2		$	118

Loans receivable:
Balance at end of year
Individually evaluated for impairment	$	60		$	29			$	13		$	2		$	—		$	—		$	—		$	104

Collectively evaluated for impairment	3,921			2,923				1,631			1,131			—			—			167			9,772

Total	$	3,981		$	2,952			$	1,644		$	1,132		$	—		$	—		$	167		$	9,876


The following table presents the activity in our allowance for loan losses and related recorded investment of the associated loans in our acquired loan portfolio for the years ended December 31:


	Commercial							Consumer
Acquired loans	Real estate			Business				Residential			Home equity			Credit cards			Other			Total
																	consumer
2013
Allowance for loan losses:
Balance at beginning of year	$	—		$	—			$	—		$	—		$	—		$	1		$	2

Provision for loan losses	4			—				1			3			—			(1		)	7

Charge-offs	(4		)	—				—			—			—			(1		)	(5		)

Recoveries	—			—				—			—			—			—			—

Balance at end of year	$	—		$	—			$	1		$	3		$	—		$	—		$	4

Allowance for loan losses:
Individually evaluated for impairment	$	—		$	—			$	—		$	—		$	—		$	—		$	—

Collectively evaluated for impairment	—			—				1			3			—			—			4

Total	$	—		$	—			$	1		$	3		$	—		$	—		$	4

Loans receivable:
Balance at end of year
Individually evaluated for impairment	$	1		$	7			$	—		$	1		$	—		$	—		$	10

Collectively evaluated for impairment	—			305				—			960			—			—			1,264

Loans acquired with deteriorated credit quality	1,423			102				1,546			173			—			—			3,244

Total	$	1,423		$	414			$	1,546		$	1,134		$	—		$	—		$	4,517

2012
Allowance for loan losses:
Balance at beginning of year	$	—		$	—			$	—		$	—		$	—		$	2		$	2

Provision for loan losses	6			—				—			—			—			1			7

Charge-offs	(7		)	—				—			—			—			(2		)	(9		)

Recoveries	1			—				—			—			—			—			1

Balance at end of year	$	—		$	—			$	—		$	—		$	—		$	1		$	2

Allowance for loan losses:
Individually evaluated for impairment	$	—		$	—			$	—		$	—		$	—		$	—		$	—

Collectively evaluated for impairment	—			—				—			—			—			1			2

Total	$	—		$	—			$	—		$	—		$	—		$	1		$	2

Loans receivable:
Balance at end of year
Individually evaluated for impairment	$	1		$	7			$	—		$	2		$	—		$	—		$	10

Collectively evaluated for impairment	—			427				—			1,045			100			42			1,614

Loans acquired with deteriorated credit quality	2,048			233				2,037			319			—			76			4,713

Total	$	2,049		$	667			$	2,037		$	1,366		$	100		$	118		$	6,338




	Commercial							Consumer
Acquired loans	Real estate			Business				Residential			Home equity			Credit cards			Other			Total
																	consumer
2011
Allowance for loan losses:
Balance at beginning of year	$	—		$	—			$	—		$	—		$	—		$	—		$	—

Provision for loan losses	1			—				—			—			—			2			3

Charge-offs	(1		)	—				—			—			—			—			(1		)

Recoveries	—			—				—			—			—			—			—

Balance at end of year	$	—		$	—			$	—		$	—		$	—		$	2		$	2

Allowance for loan losses:
Individually evaluated for impairment	$	—		$	—			$	—		$	—		$	—		$	—		$	—

Collectively evaluated for impairment	—			—				—			—			—			2			2

Total	$	—		$	—			$	—		$	—		$	—		$	2		$	2

Loans receivable:
Balance at end of year
Individually evaluated for impairment	$	—		$	—			$	—		$	—		$	—		$	—		$	—

Collectively evaluated for impairment	—			531				—			607			—			44			1,182

Loans acquired with deteriorated credit quality	2,263			289				2,369			426			—			68			5,415

Total	$	2,263		$	820			$	2,369		$	1,034		$	—		$	111		$	6,597

Summary of nonaccruing loans	'
	Our nonperforming loans consisted of the following at December 31:


		2013										2012
		Originated			Acquired			Total				Originated			Acquired			Total
	Commercial:
	Real estate	$	53		$	1		$	54			$	51		$	1		$	52

	Business	42			9			51				47			9			56

	Total commercial	95			10			105				98			10			108

	Consumer:
	Residential real estate	31			—			31				27			—			27

	Home equity	18			20			39				14			19			33

	Indirect auto	6			—			6				1			—			1

	Other consumer	6			—			6				3			—			3

	Total consumer	62			20			82				45			20			65

	Total	$	157		$	30		$	188			$	143		$	30		$	173

Details of additional information on loans	'
	The table below provides information about the interest income that would have been recognized if our nonperforming loans had performed in accordance with terms for the years ending December 31:


		2013			2012			2011
	Additional interest income that would have been recorded if nonperforming loans had performed in accordance with original terms	$	7		$	7		$	6

Summary of originated impaired loans	'
	The carrying value of our impaired loans, less any related allowance for loan losses, was 69% and 67% of the loans’ contractual principal balance at December 31, 2013 and 2012, respectively.


		2013										2012
	Originated loans	Recorded			Unpaid			Related				Recorded			Unpaid			Related
		investment			principal			allowance				investment			principal			allowance
					balance										balance
	With no related allowance recorded:
	Commercial:
	Real estate	$	48		$	63		$	—			$	42		$	55		$	—

	Business	55			84			—				34			57			—

	Total commercial	103			146			—				76			112			—

	Consumer:
	Residential real estate	12			12			—				6			6			—

	Home equity	4			5			—				3			3			—

	Indirect auto	1			1			—				—			—			—

	Other consumer	1			1			—				2			2			—

	Total consumer	18			20			—				11			12			—

	Total	$	121		$	166		$	—			$	87		$	124		$	—

	With a related allowance recorded:
	Commercial:
	Real estate	$	24		$	35		$	4			$	25		$	37		$	3

	Business	4			6			2				24			31			5

	Total commercial	28			41			5				48			68			7

	Consumer:
	Residential real estate	8			9			1				13			14			3

	Home equity	4			5			3				2			3			1

	Indirect auto	1			1			—				—			—			—

	Other consumer	1			1			—				—			—			—

	Total consumer	14			16			4				16			17			4

	Total	$	42		$	57		$	9			$	64		$	85		$	11

	Total
	Commercial:
	Real estate	$	72		$	97		$	4			$	67		$	92		$	3

	Business	59			90			2				58			89			5

	Total commercial	131			187			5				125			181			7

	Consumer:
	Residential real estate	20			21			1				20			20			3

	Home equity	8			10			3				5			6			1

	Indirect auto	1			2			—				—			—			—

Other consumer	3			3			—				2			2			—

Total consumer	32			36			4				27			28			4

Total	$	163		$	222		$	9			$	152		$	209		$	11

The following table provides information about our impaired acquired loans with no related allowance at December 31. The remaining credit mark is considered adequate to cover any loss on these balances.


	2013										2012
Acquired loans	Recorded			Unpaid principal balance			Related				Recorded			Unpaid principal balance			Related
	investment						allowance				investment						allowance
Commercial:
Real estate	$	1		$	4		$	—			$	1		$	5		$	—

Business	7			8			—				7			7			—

Total commercial	8			12			—				8			12			—

Consumer:
Residential real estate	—			—			—				—			—			—

Home equity	1			2			—				2			3			—

Other consumer	—			—			—				—			—			—

Total consumer	1			2			—				2			3			—

Total(1)	$	10		$	14		$	—			$	10		$	16		$	—


-1	Includes nonaccrual purchased credit impaired loans.
The following table provides information about our impaired originated loans including the average recorded investment and interest income recognized on impaired loans for the years ended December 31:


	2013							2012							2011
Originated loans	Average			Interest				Average			Interest				Average			Interest
	recorded			income				recorded			income				recorded			income
	investment			recognized				investment			recognized				investment			recognized
Commercial:
Real estate	$	80		$	1			$	72		$	1			$	51		$	3

Business	63			1				63			1				24			2

Total commercial	142			2				135			2				75			5

Consumer:
Residential real estate	20			—				20			—				13			1

Home equity	5			—				4			—				1			—

Indirect auto	1			—				—			—				—			—

Other consumer	3			—				2			—				—			—

Total consumer	29			1				26			—				14			1

Total	$	172		$	3			$	161		$	3			$	88		$	5

The following table provides information about our impaired acquired loans including the average recorded investment and interest income recognized on impaired loans for the years ended December 31. There were no impaired acquired loans at December 31, 2011.


	2013							2012
Acquired loans	Average			Interest				Average			Interest
	recorded			income				recorded			income
	investment			recognized				investment			recognized
Commercial:
Real estate	$	1		$	—			$	1		$	—

Business	7			—				8			—

Total commercial	8			—				9			—

Consumer:
Residential real estate	—			—				—			—

Home equity	—			—				1			—

Other consumer	—			—				—			—

Total consumer	—			—				1			—

Total(1)	$	9		$	—			$	10		$	—

Reconciliation between nonaccrual loans and impaired loans	'
	The following table is a reconciliation between nonaccrual loans and impaired loans at December 31:


		2013										2012
		Commercial			Consumer			Total				Commercial			Consumer			Total

	Nonaccrual loans	$	105		$	82		$	188			$	108		$	65		$	173

	Plus: Accruing TDRs	45			8			52				36			10			46

	Less: Smaller balance nonaccrual loans evaluated collectively when determining the allowance for loan losses	(11		)	(57		)	(67		)		(12		)	(45		)	(57		)
	Total impaired loans(1)	$	139		$	33		$	172			$	133		$	29		$	162


Aging analysis of loans	'
	The following table contains an aging analysis of our loans by class at December 31:


		30-59 days			60-89 days			Greater than			Total			Current			Total loans			Greater than
		past due			past due			90 days			past due						receivable			90 days
								past due												and accruing (1)
	2013
	Originated loans
	Commercial:
	Real estate	$	5		$	2		$	27		$	34		$	6,321		$	6,354		$	—

	Business	4			3			20			28			4,849			4,876			—

	Total commercial	9			5			47			61			11,169			11,231			—

	Consumer:
	Residential real estate	6			2			21			30			1,872			1,902			—

	Home equity	3			2			12			17			1,601			1,618			—

	Indirect auto	12			2			3			18			1,526			1,544			—

	Credit cards	2			1			3			6			319			325			3

	Other consumer	3			1			3			7			295			302			—

	Total consumer	27			9			43			79			5,613			5,691			3

	Total	$	36		$	15		$	90		$	140		$	16,782		$	16,922		$	3

	Acquired loans
	Commercial:
	Real estate	$	8		$	8		$	37		$	52		$	1,371		$	1,423		$	36

	Business	2			1			8			11			403			414			5

	Total commercial	10			8			45			63			1,774			1,838			41

	Consumer:
	Residential real estate	19			11			64			94			1,452			1,546			64

	Home equity	7			4			20			31			1,103			1,134			5

	Total consumer	26			15			84			125			2,555			2,680			70

	Total	$	35		$	23		$	130		$	188		$	4,330		$	4,517		$	110

	2012
	Originated loans
	Commercial:
	Real estate	$	4		$	3		$	40		$	47		$	4,996		$	5,044		$	4

	Business	5			5			19			29			4,257			4,286			—

	Total commercial	10			7			60			77			9,253			9,330			4

	Consumer:
	Residential real estate	8			2			19			29			1,695			1,724			—

	Home equity	3			2			9			13			1,273			1,286			—

	Indirect auto	4			—			—			5			596			601			—

Credit cards	—			—			—			1			214			215			—

Other consumer	2			1			1			4			212			215			—

Total consumer	17			5			30			52			3,990			4,042			—

Total	$	26		$	13		$	90		$	129		$	13,244		$	13,372		$	5

Acquired loans
Commercial:
Real estate	$	11		$	18		$	80		$	109		$	1,940		$	2,049		$	79

Business	6			2			13			20			647			667			6

Total commercial	16			20			93			129			2,587			2,716			85

Consumer:
Residential real estate	24			12			69			105			1,932			2,037			69

Home equity	10			5			21			36			1,329			1,366			7

Credit cards	3			2			4			8			92			100			4

Other consumer	2			1			2			5			113			118			2

Total consumer	39			20			96			155			3,466			3,621			82

Total	$	55		$	40		$	189		$	284		$	6,053		$	6,338		$	167


(1)	Includes credit card loans, loans that have matured and are in the process of collection, and acquired loans that were originally recorded at fair value upon acquisition. Acquired loans are considered to be accruing as we can reasonably estimate future cash flows on these acquired loans and we expect to fully
Information about the credit quality of our commercial loan portfolio	'
	Our internal loan risk assessment provides information about the financial health of our commercial borrowers and our risk of potential loss. The following tables present information about the credit quality of our commercial loan portfolio at December 31:


		Real estate			Business			Total			Percent of total
	2013
	Originated loans:
	Pass	$	6,028		$	4,590		$	10,618		94.6	%

	Criticized:(1)
	Accrual	273			244			517			4.6	%

	Nonaccrual	53			42			95			0.8	%

	Total criticized	327			286			612			5.4	%

	Total	$	6,354		$	4,876		$	11,231		100	%

	Acquired loans:
	Pass	$	1,260		$	359		$	1,619		88.2	%

	Criticized:(1)
	Accrual	162			46			208			11.3	%

	Nonaccrual	1			9			10			0.5	%

	Total criticized	163			55			218			11.8	%

	Total	$	1,423		$	414		$	1,838		100	%

	2012
	Originated loans:
	Pass	$	4,746		$	4,069		$	8,815		94.5	%

	Criticized:(1)
	Accrual	247			170			417			4.5	%

	Nonaccrual	51			47			98			1	%

	Total criticized	298			217			515			5.5	%

	Total	$	5,044		$	4,286		$	9,330		100	%

	Acquired loans:
	Pass	$	1,794		$	582		$	2,376		87.4	%

	Criticized:(1)
	Accrual	254			77			331			12.2	%

	Nonaccrual	1			9			10			0.4	%

	Total criticized	255			85			341			12.6	%

	Total	$	2,049		$	667		$	2,716		100	%


	(1)	Includes special mention, substandard, doubtful, and loss, which are consistent with regulatory definitions, and as described in Part I, Item 1, “Business,” under the heading “Asset Quality Review.”
Information about the credit quality of our consumer loan portfolio	'
	The scores are obtained from a nationally recognized consumer rating agency and are presented in the table below at December 31:


		Residential			Home equity			Indirect Auto			Credit cards			Other			Total			Percent of
		real estate												consumer						total
	2013
	Originated loans by refreshed FICO score:
	Over 700	$	1,609		$	1,327		$	993		$	223		$	173		$	4,324		76	%

	660-700	128			158			304			53			53			696			12.2

	620-660	56			69			149			25			28			328			5.8

	580-620	32			30			55			12			14			142			2.5

	Less than 580	38			30			43			8			15			135			2.4

	No score(1)	39			3			—			4			20			66			1.1

	Total	$	1,902		$	1,618		$	1,544		$	325		$	302		$	5,691		100	%

	Acquired loans by refreshed FICO score:
	Over 700	$	1,074		$	874		$	—		$	—		$	—		$	1,948		72.7	%

	660-700	115			103			—			—			—			218			8.1

	620-660	61			57			—			—			—			119			4.4

	580-620	57			39			—			—			—			95			3.6

	Less than 580	75			40			—			—			—			114			4.3

	No score(1)	164			21			—			—			—			185			6.9

	Total	$	1,546		$	1,134		$	—		$	—		$	—		$	2,680		100	%

	2012
	Originated loans by refreshed FICO score:
	Over 700	$	1,382		$	1,010		$	335		$	137		$	118		$	2,981		73.7	%

	660-700	167			149			146			37			49			548			13.6

	620-660	68			59			76			18			28			249			6.2

	580-620	39			28			27			9			10			113			2.8

	Less than 580	58			36			16			11			10			131			3.2

	No score(1)	12			4			1			3			1			20			0.5

	Total	$	1,724		$	1,286		$	601		$	215		$	215		$	4,042		100	%

	Acquired loans by refreshed FICO score:
	Over 700	$	1,353		$	998		$	—		$	63		$	57		$	2,472		68.3	%

	660-700	177			136			—			17			18			348			9.6

	620-660	104			84			—			9			11			207			5.7

	580-620	73			54			—			4			6			136			3.8

	Less than 580	109			70			—			5			8			193			5.3

No score(1)	222			24			—			1			19			265			7.3

Total	$	2,037		$	1,366		$	—		$	100		$	118		$	3,621		100	%


(1)	Primarily includes loans that are serviced by others for which refreshed FICO scores were not available as of the date indicated.
Aggregate recorded investment of impaired loans with terms through troubled debt restructuring	'
	The following table details additional information about our TDRs at December 31:


		2013			2012			2011
	Aggregate recorded investment of impaired loans with terms modified through a troubled debt restructuring:
	Accruing interest	$	52		$	46		$	44

	Nonaccrual	56			42			34

	Total troubled debt restructurings(1)	$	108		$	89		$	77


	(1)	Includes 40 and 44 acquired loans that were restructured with a recorded investment of $1 million and $3 million at December 31, 2013 and 2012, respectively.
Schedule of financial effects of modifications made to restructured loans	'
	The financial effects of our modifications are as follows for the years ended December 31:


	Type of Concession	Count		Postmodification			Premodification			Postmodification
				recorded			allowance for			allowance for
				investment(1)			loan losses			loan losses
	2013
	Commercial:
	Commercial real estate
	Extension of term	5		$	9		$	1		$	1

	Deferral of principal	1		8			—			—

	Extension of term and rate reduction	8		17			1			—

	Commercial business
	Extension of term	10		10			2			—

	Extension of term and rate reduction	7		1			—			—

	Total commercial	31		46			4			1

	Consumer:
	Residential real estate
	Extension of term	2		—			—			—

	Rate reduction	3		—			—			—

	Deferral of principal and extension of term	5		—			—			—

	Extension of term and rate reduction	11		2			—			—

	Chapter 7 Bankruptcy	15		1			—			—

	Home equity
	Rate reduction	2		—			—			—

	Deferral of principal and extension of term	3		—			—			—

	Extension of term and rate reduction	3		—			—			—

	Chapter 7 Bankruptcy	61		2			—			—

	Indirect auto
	Chapter 7 Bankruptcy	74		1			—			—



	Type of Concession	Count		Postmodification			Premodification			Postmodification
				recorded			allowance for			allowance for
				investment(1)			loan losses			loan losses
	Other consumer
	Extension of term	1		$	—		$	—		$	—

	Rate reduction	1		—			—			—

	Extension of term and rate reduction	1		—			—			—

	Chapter 7 Bankruptcy	54		1			—			—

	Total consumer	236		9			—			—

	Total	267		$	55		$	4		$	2

2012
Commercial:
Commercial real estate
Extension of term	10		$	11		$	1		$	—

Deferral of principal	1		—			—			—

Extension of term and rate reduction	1		1			—			—

Commercial business
Extension of term	8		4			—			—

Deferral of principal	1		—			—			—

Rate reduction	1		—			—			—

Extension of term and rate reduction	2		4			1			1

Total commercial	24		20			2			1

Consumer:
Residential real estate
Extension of term	4		—			—			—

Rate reduction	3		—			—			—

Deferral of principal and extension of term	5		1			—			—

Extension of term and rate reduction	3		2			—			—

Chapter 7 Bankruptcy	79		6			—			—

Other	6		1			—			—

Home equity
Extension of term and rate reduction	4		—			—			—

Chapter 7 Bankruptcy	160		7			—			—

Other	2		—			—			—

Indirect auto
Chapter 7 Bankruptcy	12		—			—			—

Other consumer
Chapter 7 Bankruptcy	60		2			—			—

Total consumer	338		20			—			1

Total	362		$	40		$	2		$	1


(1)	Postmodification balances approximate premodification balances. The aggregate amount of charge-offs as a result of the restructurings was not significant.
Recorded investment in loan which have been modified	'
	The recorded investment in loans modified as TDRs within 12 months of the balance sheet date and for which there was a payment default during the year ended December 31 are as follows:


		2013			2012
	Commercial:
	Real estate	$	—		$	1

	Business	—			6

	Total commercial	—			7

	Consumer:
	Residential real estate	—			—

	Home Equity	—			—

	Consumer	—			—

	Total consumer	—			—

	Total	$	—		$	7

Information about residential mortgage loans	'
	The following table provides information about our residential mortgage banking activities at December 31:


		2013			2012			2011
	Loans classified as held for sale	$	50		$	155		$	94

	Loans sold during the year	1,400			1,444			738

	Gains on sale of loans, net	12			9			3

	Mortgages serviced for others	3,665			2,909			2,071

	Mortgage servicing asset recorded for loans serviced for others, net	35			26			17

Premises_and_Equipment_Tables

Premises and Equipment (Tables)	12 Months Ended
	Dec. 31, 2013
Property, Plant and Equipment [Abstract]	'
A summary of our premises and equipment	'
	premises and equipment at December 31:


		2013			2012
	Land	$	29		$	29

	Buildings and leasehold improvements	287			270

	Furniture and equipment	307			268

	Total	623			567

	Accumulated depreciation	(205		)	(156		)
	Premises and equipment, net	$	418		$	411

Goodwill_and_Other_Intangible_1

Goodwill and Other Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2013
Goodwill and Intangible Assets Disclosure [Abstract]	'
Information regarding our goodwill	'
	The following table shows information regarding our goodwill for the periods indicated:


		Banking			Financial			Consolidated
					services			total
	Balances at January 1, 2012	$	1,641		$	68		$	1,708

	Acquisitions	780			—			780

	Branch sales	(5		)	—			(5		)

	Balances at December 31, 2012	2,416			68			2,484

	Purchase accounting adjustments(1)	(35		)	—			(35		)

	Balances at December 31, 2013	$	2,381		$	68		$	2,449


	(1)	Establishment of deferred tax assets in connection with the HSBC Branch Acquisition and our National City Bank branch acquisition.
Information regarding our amortizing intangible assets	'
	The following table provides information regarding our amortizing intangible assets at December 31:


		2013			2012
	Core deposit intangible	$	191		$	191

	Accumulated amortization	(139		)	(111		)
	Net carrying amount	52			81

	Customer lists	95			99

	Accumulated amortization	(53		)	(46		)
	Net carrying amount	42			53

	Total amortizing intangible assets, net	$	94		$	134

Estimated future amortization expense for our amortizing intangible assets	'
	The estimated future amortization expense for our amortizing intangible assets is as follows at December 31, 2013:


		First quarter			Second quarter			Third quarter			Fourth quarter		Total
	2014	$	8		$	7		$	6		$	6	$	27

	2015	6			5			4			4		19

	2016	4			3			3			3		13

	2017	3			3			3			3		12

	2018	3			2			2			2		9

	Thereafter												14

Deposits_Tables

Deposits (Tables)	12 Months Ended
	Dec. 31, 2013
Deposits [Abstract]	'
Deposits	'
	Our deposits consisted of the following at December 31:


		2013				2012
		Balance		Weighted		Balance		Weighted
				average				average
				rate				rate
	Core deposits:
	Savings	$	3,667	0.1	%	$	3,888	0.15	%

	Interest-bearing checking	4,744		0.04		4,451		0.07

	Money market deposits	9,740		0.21		10,581		0.28

	Noninterest-bearing	4,866		—		4,644		—

	Total core deposits	23,016		0.12		23,563		0.17

	Certificates	3,649		0.68		4,113		0.81

	Total deposits	$	26,665	0.2	%	$	27,677	0.27	%

Interest expense on deposits	'
	Interest expense on our deposits is summarized as follows for the years ended December 31:


		2013		2012		2011
	Certificates	$	26	$	33	$	40

	Money market deposits	21		26		36

	Savings	4		5		5

	Interest-bearing checking	2		2		2

	Total interest expense	$	53	$	67	$	83

Borrowings_Tables

Borrowings (Tables)	12 Months Ended
	Dec. 31, 2013
Debt Disclosure [Abstract]	'
Summary of outstanding borrowings	'
	Our outstanding borrowings are summarized as follows at December 31:


		2013		2012
	Short-term borrowings:
	FHLB advances	$	4,304	$	2,439

	Repurchase agreements	518		545

	Total short-term borrowings	4,822		2,984

	Long-term borrowings:
	Senior notes (maturing in 2020)	298		297

	Subordinated notes (maturing in 2021)	298		298

	Junior subordinated debentures (maturing between 2030 and 2037)	113		112

	Other (maturing between 2014 and 2032)	25		25

	Total long-term borrowings	734		732

	Total borrowings	$	5,556	$	3,716

Interest expense on borrowings	'
	Interest expense on our borrowings is summarized as follows for the years ended December 31:


		2013		2012		2011
	FHLB advances	$	14	$	19	$	43

	Repurchase agreements	1		17		31

	Senior notes	21		21		21

	Subordinated notes	23		23		1

	Junior subordinated debentures	5		6		5

	Total interest expense	$	64	$	86	$	101

Aggregate maturities of our long term borrowings	'
	The aggregate maturities of our long-term borrowings are as follows at December 31, 2013 (by year of maturity):


	2014	$	2

	2015	2

	2016	2

	2017	2

	2018	2

	Thereafter	724



	Total	$	734

Derivative_Financial_Instrumen1

Derivative Financial Instruments (Tables)	12 Months Ended
	Dec. 31, 2013
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'
Derivative financial instruments	'
	Our derivative positions include both instruments that are designated as hedging instruments and instruments that are customer related and not designated in hedging relationships. The following table presents information regarding our derivative financial instruments, at December 31:


		Asset derivatives							Liability derivatives
		Notional			Fair value (1)				Notional			Fair value (2)
		amount							amount
	2013
	Derivatives designated as hedging instruments:
	Interest rate swap agreements	$	22		$	—			$	13		$	1

	Derivatives not designated as hedging instruments:
	Interest rate swap agreements	3,092			76				3,094			76

	Total derivatives	$	3,114		$	76			$	3,107		$	77

	2012
	Derivatives designated as hedging instruments:
	Interest rate swap agreements	$	—		$	—			$	15		$	2

	Derivatives not designated as hedging instruments:
	Interest rate swap agreements	2,195			102				2,195			103

	Total derivatives	$	2,195		$	102			$	2,210		$	105



Amounts recognized for derivative financial instruments	'
	The following table presents information about amounts recognized for our derivative financial instruments designated in cash flow hedging relationships for the years ended December 31:


	Cash Flow Hedges	2013				2012				2011
	Interest rate swap agreements:
	Amount of gain (loss) on derivatives recognized in other comprehensive income, net of tax	$	1			$	7			$	(16	)

	Amount of (loss) on derivatives reclassified from other comprehensive income to income	(1		)	(1)	(15		)	(2)	(10		)	(1)

	-1	Recognized in interest expense on borrowings in our Consolidated Statements of Income.

	-2	Of this amount, $12 million was recognized in merger and acquisition integration expenses when the associated borrowings were repaid in connection with the HSBC Branch Acquisition and $4 million was recognized in interest expense on borrowings in our Consolidated Statements of Income.

Commitments_and_Contingent_Lia1

Commitments and Contingent Liabilities (Tables)	12 Months Ended
	Dec. 31, 2013
Commitments and Contingencies Disclosure [Abstract]	'
Loan commitments	'
	Information pertaining to our loan commitments is as follows at December 31:


		2013		2012
	Outstanding commitments to originate loans:
	Fixed rate	$	217	$	502

	Variable rate	964		837

	Total commitments outstanding	$	1,181	$	1,339

	Unused lines of credit	$	8,400	$	7,734

	Standby letters of credit	297		352

	Commitments to sell residential mortgages	168		474

Future minimum lease payments	'
	Lease Obligations
	Our future minimum rental commitments for premises and equipment under non-cancelable operating leases and capital lease obligations are as follows at December 31:


		Operating leases			Capital leases
	2014	$	33		$	3

	2015	30			3

	2016	27			3

	2017	21			3

	2018	17			3

	Thereafter	69		(1)	19		(2)


	-1	Thereafter through 2041.

	(2)	Thereafter through 2032.

Capital_Tables

Capital (Tables)	12 Months Ended
	Dec. 31, 2013
Equity [Abstract]	'
Actual capital amounts ratios and requirements	'
	The actual capital amounts, ratios, and requirements for First Niagara Financial Group, Inc. and First Niagara Bank, N.A. are as follows at December 31:


						For capital adequacy				Minimum amount to be
		Actual				purposes				well-capitalized
		Amount		Ratio		Amount		Ratio		Amount		Ratio
	First Niagara Financial Group, Inc.:
	2013
	Leverage ratio	$	2,526	7.26	%	$	1,392	4	%	$	1,739	5	%

	Tier 1 risk-based capital	2,526		9.56		1,057		4		1,585		6

	Total risk-based capital	3,046		11.53		2,114		8		2,642		10

	2012
	Leverage ratio	$	2,265	6.75	%	$	1,342	4	%	$	1,678	5	%

	Tier 1 risk-based capital	2,265		9.29		975		4		1,463		6

	Total risk-based capital	2,737		11.23		1,950		8		2,437		10

	First Niagara Bank, N.A.:
	2013
	Leverage ratio	$	2,675	7.7	%	$	1,390	4	%	$	1,737	5	%

	Tier 1 risk-based capital	2,675		10.15		1,054		4		1,581		6

	Total risk-based capital	2,898		10.99		2,109		8		2,637		10

	2012
	Leverage ratio	$	2,423	7.23	%	$	1,340	4	%	$	1,676	5	%

	Tier 1 risk-based capital	2,423		9.94		975		4		1,462		6

	Total risk-based capital	2,597		10.66		1,949		8		2,437		10

Income_Taxes_Tables

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2013
Income Tax Disclosure [Abstract]	'
Components of our income tax	'
	The components of our income tax expense are as follows for the years ended December 31:


		2013			2012			2011
	Current:
	Federal	$	119		$	36		$	81

	State	4			1			6

		123			37			87

	Deferred taxes (benefit):
	Federal	3			31			3

	State	1			3			(2		)

		5			34			1

	Total income tax expense	$	128		$	71		$	88

Summary Income tax expense	'
	Our income tax expense differs from our expected tax expense (computed by applying the Federal corporate tax rate of 35% to income before income taxes) as follows for the years ended December 31:


		2013			2012			2011
	Tax expense at statutory rate	$	148		$	84		$	92

	Increase (decrease) attributable to:
	State income taxes, net of Federal benefit	4			2			3

	Bank owned life insurance income	(6		)	(5		)	(4		)
	Tax exempt interest	(11		)	(10		)	(9		)
	Nondeductible acquisition costs	—			—			2

	Credits	(13		)	(2		)	(2		)
	Other	6			2			7

	Income taxes	$	128		$	71		$	88

Significant portions of deferred tax assets and deferred tax liabilities	'
	The tax effects of our temporary differences that give rise to significant portions of our deferred tax assets and deferred tax liabilities are as follows at December 31:


		2013			2012
	Deferred tax assets:
	Net operating loss and other carryforwards	$	58		$	77

	Financial statement allowance for credit losses	111			103

	Securitizations	2			(27		)

	Deferred compensation	13			15

	Stock-based compensation	14			14

	Other accrued expenses not currently deductible	21			18

	Post-retirement benefit obligation	4			5

	Nonperforming loan interest	12			9

	Other	28			22

	Total gross deferred tax assets	264			236


	Valuation allowance	—			(2		)


	Deferred tax liabilities:
	Unrealized gain on investment securities available for sale	(52		)	(128		)
	Partnerships	(3		)	(3		)
	Leases	(27		)	(22		)
	Acquired intangibles	(33		)	(29		)
	Premises and equipment	(19		)	(19		)
	Mortgage servicing rights	(13		)	(10		)
	Pension benefits	(37		)	(22		)
	Other	(2		)	(6		)
	Total gross deferred tax liabilities	(187		)	(239		)
	Net deferred tax asset (liability)	$	77		$	(5	)


Reconciliation of unrecognized tax benefits	'
	A reconciliation of our unrecognized tax benefits is as follows for the years ended December 31:


		2013			2012			2011
	Balance at beginning of year	$	3		$	3		$	8

	Additions based on tax positions related to the current year	1			1			1

	Additions for tax positions of prior years	3			—			—

	Reductions related to settlements with taxing authorities	(1		)	(2		)	—

	Reductions as a result of a lapse of the applicable statute of limitations	—			—			(6		)

	Balance at end of year	$	6		$	3		$	3

Earnings_Per_Share_Tables

Earnings Per Share (Tables)	12 Months Ended
	Dec. 31, 2013
Earnings Per Share [Abstract]	'
Computation of basic and diluted earnings per share using two-class method	'
	The following table is a computation of our basic and diluted earnings per share using the two-class method for the years ended December 31:


		2013			2012			2011
	Net income available to common stockholders	$	265		$	141		$	174

	Less income allocable to unvested restricted stock awards	1			—			—

	Net income allocable to common stockholders	$	264		$	140		$	173

	Weighted average common shares outstanding:
	Total shares issued	366			366			285

	Unallocated employee stock ownership plan shares	(2		)	(2		)	(3		)
	Unvested restricted stock awards	(2		)	(1		)	(1		)
	Treasury shares	(12		)	(14		)	(11		)
	Total basic weighted average common shares outstanding	350			349			271

	Incremental shares from assumed vesting of restricted stock awards	1			—			—

	Total diluted weighted average common shares outstanding	350			349			272

	Basic earnings per common share	$	0.75		$	0.4		$	0.64

	Diluted earnings per common share	$	0.75		$	0.4		$	0.64

	Anti-dilutive stock options and restricted stock awards excluded from the diluted weighted average common share calculations	11			12			11

Other_Comprehensive_Income_Tab

Other Comprehensive Income (Tables)	12 Months Ended
	Dec. 31, 2013
Equity [Abstract]	'
Schedule of Comprehensive Income (Loss)	'
	The following table presents the activity in our other comprehensive income for the years ended December 31:


		Pretax			Income taxes			Net
	2013
	Securities available for sale:
	Net unrealized holding losses arising during the year	$	(177	)	$	(68	)	$	(109	)
	Reclassification adjustment for net unrealized holding gains on securities transferred between available for sale and held to maturity	(55		)	(21		)	(34		)
	Net unrealized losses on securities available for sale	(232		)	(89		)	(143		)
	Net unrealized holding gains on securities transferred between available for sale and held to maturity:
	Net unrealized holding gains transferred during the year	55			21			34

	Amortization of net unrealized holding gains to income during the year	(20		)	(7		)	(12		)	(1)
	Net unrealized holding gains on securities transferred during the year	35			14			22

	Interest rate swaps designated as cash flow hedges:
	Reclassification adjustment for realized losses included in net income	1			1			1			(2)

	Pension and post-retirement actuarial gains	40			15			25

	Total other comprehensive loss	$	(154	)	$	(59	)	$	(95	)
	2012
	Securities available for sale:
	Net unrealized holding gains arising during the year	$	177		$	68		$	109

	Reclassification adjustment for realized gains included in net income	(16		)	(6		)	(10		)
	Reclassification adjustment for net unrealized holding gains on securities transferred between available for sale and held to maturity	4			2			2

	Net unrealized gains on securities available for sale	165			64			101

	Net unrealized holding gains on securities transferred between available for sale and held to maturity:
	Reclassification adjustment for net unrealized holding gains on securities transferred	(4		)	(2		)	(2		)
	Less: amortization of net unrealized holding gains to income during the year	(3		)	(1		)	(2		)	(1)
	Net unrealized holding gains on securities transferred during the year	(7		)	(3		)	(4		)
	Interest rate swaps designated as cash flow hedges:
	Net unrealized gains arising during the year	(1		)	2			(3		)

	Reclassification adjustment for realized losses included in net income	15			6			10			(2)

	Net unrealized losses on interest rate swaps designated as cash flow hedges	15			8			7

	Pension and post-retirement actuarial losses	(24		)	(10		)	(14		)
	Total other comprehensive income	$	149		$	59		$	89




		Pretax			Income taxes			Net
	2011
	Securities available for sale:
	Net unrealized holding gains arising during the year	$	68		$	26		$	42

	Reclassification adjustment for realized gains included in net income	(5		)	(2		)	(3		)
	Reclassification adjustment for net unrealized holding gains on securities transferred between available for sale and held to maturity	(6		)	(2		)	(4		)
	Net unrealized gains on securities available for sale	56			22			35

	Net unrealized holding gains on securities transferred from available for sale and held to maturity:
	Net unrealized holding gains transferred during the year	6			2			4

	Less: amortization of net unrealized holding gains to income during the year	(2		)	(1		)	(1		)	(1)
	Net unrealized holding gains on securities transferred during the year	4			2			3

	Interest rate swaps designated as cash flow hedges:
Net unrealized losses arising during the year	(36		)	(14		)	(22		)
Reclassification adjustment for realized losses included in net income	10			4			6			(2)

Net unrealized losses on interest rate swaps designated as cash flow hedges	(26		)	(10		)	(16		)
Pension and post-retirement actuarial losses	(19		)	(8		)	(11		)
Total other comprehensive income	$	16		$	6		$	10


(1)	Included in Interest income on investment securities and other in our Consolidated Statement of Income.

(2)	Included in Interest expense on borrowings in our Consolidated Statement of Income.
Schedule of Accumulated Other Comprehensive Income (Loss)	'
	The following table presents the activity in our accumulated other comprehensive income for the periods indicated:


		Net unrealized gains on securities available for sale			Net unrealized gains on			Unrealized gains on			Pension and postretirement plans			Total
					securities transferred from			interest rate
					available for sale to			swaps designated as
					held to maturity			cash flow hedges
	Balance, January 1, 2011	$	71		$	—		$	3		$	(16	)	$	58

	Period change, net of tax	35			3			(16		)	(11		)	10

	Balance, December 31, 2011	105			3			(13		)	(27		)	68

	Period change, net of tax	101			(4		)	7			(14		)	89

	Balance, December 31, 2012	207			(2		)	(6		)	(41		)	157

	Period change, net of tax	(143		)	22			1			25			(95		)

	Balance, December 31, 2013	$	64		$	20		$	(6	)	$	(16	)	$	62

StockBased_Compensation_Tables

Stock-Based Compensation (Tables)	12 Months Ended
	Dec. 31, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
Stock Option Activity	'
	The following is a summary of our stock option activity for the year ended December 31, 2013:


		Number of		Weighted average			Weighted average remaining	Aggregate intrinsic
		shares (in thousands)		exercise price			contractual term	value(1)
	Outstanding at January 1, 2013	11,175		$	13.65

	Granted	434		8.86

	Exercised	(19	)	9.84

	Forfeited	(54	)	10.7

	Expired	(350	)	21.37

	Outstanding at December 31, 2013	11,186		$	13.23		2.7 years	$	1

	Exercisable at December 31, 2013	10,533		$	13.46		2.3 years	$	—


	(1)	Intrinsic value is the difference between the fair value of our stock at December 31, 2013 and the exercise price of the stock award.
Nonvested Stock Option	'
	The following is a summary of our nonvested stock option activity for the year ended December 31, 2013:


		Number of		Weighted			Weighted average
		shares (in thousands)		average			grant date
				exercise price			fair value
	Nonvested at January 1, 2013	800		$	11.25		$	3

	Granted	434		8.86			2.36

	Vested	(527	)	11.56			3.07

	Forfeited	(54	)	10.7			2.86

	Nonvested at December 31, 2013	653		$	9.45		$	2.52

Summary of Stock Option Outstanding	'
	The following is a summary of our stock options outstanding at December 31:


	Exercise price	Options outstanding (in thousands)		Weighted average exercise price			Weighted average remaining life (years)	Options exercisable (in thousands)		Weighted average exercise price
	2013
	$8.86 – $12.00	1,835		$	10.25		6.8	1,225		$	10.8

	$12.01 – $15.00	9,099		13.2			1.9	9,056		13.19

	$15.01 – $18.00	42		15.25			0.5	42		15.25

	$18.01 – $57.75	210		40.07			1.5	210		40.07

	Total	11,186		13.23			2.7	10,533		13.46

	2012
	$9.71 – $13.00	2,693		$	11.58		5.6	2,165		$	12

	$13.01 – $16.00	8,168		13.3			2.9	7,896		13.28

	$16.01 – $20.00	19		16.27			0.6	19		16.27

	$20.01 – $57.75	295		41.96			2	295		41.96

	Total	11,175		13.65			3.5	10,375		13.83

	2011
	$9.71 – $13.00	2,569		$	12.04		5.3	2,508		$	12.02

	$13.01 – $16.00	8,371		13.32			3.9	7,828		13.28

	$16.01 – $20.00	19		16.27			1.6	19		16.27

	$20.01 – $57.75	449		38.82			2.2	449		38.82

	Total	11,408		14.04			4.2	10,804		14.05

Summary of Stock Option Granted and Weighted Average Assumption to Compute Fair Value of Options	'
	The following is a summary of our stock options granted for the years ended December 31, as well as the weighted average assumptions that we utilized to compute the fair value of the options:


		2013			2012			2011
	Options granted (in thousands)	434			528			288

	Grant date weighted average fair value per stock option	$	2.36		$	2.73		$	3.36

	Grant date weighted average share price	$	8.86		$	9.84		$	13.8

	Dividend yield	3.61		%	3.25		%	4.64		%
	Risk-free interest rate	0.99		%	1.26		%	2.4		%
	Expected volatility factor	40.7		%	40.36		%	39.11		%
	Expected life (in years)	5.7			5.6			5.5

Summary of Restricted Stock Activity	'
	The following is a summary of our restricted stock and restricted stock unit activity for 2013:


		Number of		Weighted average grant date fair value
		shares (in thousands)
	Unvested at January 1, 2013	1,270		$	10.67

	Awarded	1,534		9.31

	Vested	(573	)	11.01

	Forfeited	(128	)	9.54

	Unvested at December 31, 2013	2,103		$	9.65

Benefit_Plans_Tables

Benefit Plans (Tables)	12 Months Ended
	Dec. 31, 2013
Compensation and Retirement Disclosure [Abstract]	'
Information regarding our pension plans	'
	Information regarding our pension plans is as follows at December 31:


		2013			2012
	Change in projected benefit obligation:
	Projected benefit obligation at beginning of year	$	243		$	219

	Service cost	1			1

	Interest cost	10			11

	Actuarial (gain) loss	(26		)	34

	Benefits paid	(13		)	(21		)
	Projected benefit obligation at end of year	214			243

	Change in fair value of plan assets:
	Fair value of plan assets at beginning of year	276			157

	Employer contributions	2			112

	Actual return on plan assets	25			28

	Benefits paid	(13		)	(21		)
	Fair value of plan assets at end of year	290			276

	Overfunded status at year end	$	76		$	33

Net pension cost	'
	Net pension cost is comprised of the following for the years ended December 31:


		2013			2012			2011
	Service cost	$	1		$	1		$	—

	Interest cost	10			11			9

	Expected return on plan assets	(16		)	(14		)	(7		)
	Amortization of unrecognized loss	3			2			1

	Settlement credit	—			—			(9		)

	Net periodic pension (gain)	$	(2	)	$	(2	)	$	(6	)
Change in plan assets and benefit obligation recognized in other comprehensive income	'
	Changes in plan assets and benefit obligations recognized in other comprehensive income are as follows for the years ended December 31:


		2013			2012
	Net (gain) loss	$	(38	)	$	26

	Total (gain) loss recognized in other comprehensive income	(38		)	26

	Total recognized in net periodic pension cost and other comprehensive income	$	(40	)	$	24

Principal actuarial assumption	'
	The principal actuarial assumptions we used were as follows for the years ended December 31:


		2013		2012		2011
	Projected benefit obligation:
	Discount rate	5.02	%	4.04	%	5.11	%
	Net periodic pension cost:
	Discount rate	4.07	%	5.16	%	5.48	%
	Expected long-term rate of return on plan assets	5.89	%	5.86	%	5	%
Fair value of the plan's assets by assets category and level within the faire value hierarchy	'
	The fair values of the Plans’ assets by asset category and level within the fair value hierarchy are as follows at December 31:


	Asset Category	Total			Level 1			Level 2			Level 3
	2013
	Cash	$	43		$	43		$	—		$	—

	Equity securities:
	First Niagara Financial Group, Inc. common stock	1			1			—			—

	U.S. companies	32			32			—			—

	International companies	2			2			—			—

	Fixed income securities:
	Corporate bonds	4			—			4			—

	Exchange traded funds:
	Large cap growth	15			15			—			—

	Large cap value	9			9			—			—

	Foreign large cap blend	3			3			—			—

	Small and mid cap blend	2			2			—			—

	Mutual fund investments:
	Foreign large value and blend	14			14			—			—

	Small and midcap growth and blend	11			11			—			—

	Mortgage-backed securities	7			7			—			—

	Large blend	26			26			—			—

	Total return investment grade securities	41			41			—			—

	Real estate	3			3			—			—

	Diversified emerging markets	5			5			—			—

	High yield bond	9			9			—			—

	World bond	4			4			—			—

	Intermediate term bond	58			58			—			—

		$	290		$	286		$	4		$	—



	Asset Category	Total			Level 1			Level 2			Level 3
	2012
	Cash	$	52		$	52		$	—		$	—

	Equity securities:
	U.S. companies	24			24			—			—

	International companies	2			2			—			—

	Fixed income securities:
	Corporate bonds	5			—			5			—

Exchange traded funds:
Large cap growth	12			12			—			—

Large cap value	6			6			—			—

Foreign large cap blend	2			2			—			—

Intermediate term bond fund	4			4			—			—

Diversified emerging markets	1			1			—			—

Small and mid cap blend	2			2			—			—

Mutual fund investments:
Foreign large value and blend	14			14			—			—

Small and midcap growth and blend	8			8			—			—

Mortgage-backed securities	7			7			—			—

Large blend	18			18			—			—

Total return investment grade securities	42			42			—			—

Real estate	3			3			—			—

Diversified emerging markets	3			3			—			—

High yield bond	5			5			—			—

World bond	4			4			—			—

Intermediate term bond	60			60			—			—

	$	276		$	271		$	5		$	—

Estimated benefit payment under pension plan	'
	Estimated benefit payments under our pension plans over the next ten years are as follow at December 31, 2013:


	2014	$	13

	2015	13

	2016	13

	2017	13

	2018	14

	2019-2023	70

Information regarding post-retirement plan	'
	Information regarding these post-retirement plans is as follows at December 31:


		2013			2012
	Change in accumulated post-retirement benefit obligation:
	Accumulated post-retirement benefit obligation at beginning of year	$	13		$	15

	Interest cost	1			1

	Actuarial (gain)	(3		)	(1		)
	Curtailments	—			(1		)

	Benefits paid	(1		)	(1		)
	Accumulated post-retirement benefit obligation at end of year	$	10		$	13

	Unfunded status at year end	$	(10	)	$	(13	)
Components of net periodic post-retirement benefit cost	'
	The components of net periodic post-retirement benefit cost are as follows for the years ended December 31:


		2013			2012			2011
	Interest cost	$	1		$	1		$	1

	Total periodic post-retirement cost	$	—		$	1		$	1

Change in plan benefit obligation recognized in other comprehensive income	'
	Changes in plan benefit obligations recognized in other comprehensive income are as follows for the years ended December 31:


		2013			2012
	Net (gain)	$	(3	)	$	(2	)
	Total (gain) recognized in other comprehensive income	$	(3	)	$	(2	)
	Total recognized in net periodic post-retirement cost and other comprehensive income	$	(2	)	$	(1	)
Principal actuarial assumptions related to other post retirement benefit	'
	The principal actuarial assumptions used were as follows for the years ended December 31:


		2013		2012		2011
	Accumulated post-retirement benefit obligation:
	Discount rate	4.87	%	3.89	%	5.19	%
	Total periodic cost:
	Discount rate	3.89	%	5.19	%	5.36	%
Estimated benefit payments under the post-retirement plan over the next ten years	'
	Estimated benefit payments under the post-retirement plan over the next ten years are as follows at December 31, 2013:


	2014	$	1

	2015	1

	2016	1

	2017	1

	2018	1

	2019-2023	4

Amount recognized in consolidated statements of condition related to pension and post retirement plans	'
	Amounts recognized in our Consolidated Statements of Condition related to our pension and post-retirement plans are as follows for the years ended December 31:


		2013			2012
	Other assets:
	Fair value of plan assets in excess of projected benefit obligation	$	76		$	33

	Other liabilities:
	Accumulated post-retirement benefit obligation	$	10		$	13


	Accumulated other comprehensive loss (income), net of taxes:
	Pension plans	$	19		$	42

	Post-retirement benefit plan	(2		)	(1		)
		$	16		$	41

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	12 Months Ended
	Dec. 31, 2013																				Dec. 31, 2012
Fair Value Disclosures [Abstract]	'																				'
Fair value option quantitative disclosures	'																				'


		2013			2012
	Fair value carrying amount	$	50		$	155

	Aggregate unpaid principal balance	1			149

	Fair value carrying amount less aggregate unpaid principal balance	$	49		$	5

Summary of assets and liabilities measured at fair value on a recurring basis	'																				'
	The following tables summarize our assets and liabilities measured at fair value on a recurring basis at December 31:

																						Fair Value Measurements
		Fair Value Measurements																				Total			Level 1			Level 2			Level 3
		Total			Level 1			Level 2			Level 3										2012
	2013																				Assets:
	Assets:																				Investment securities available for sale:
	Investment securities available for sale:																				Debt securities:
	Debt securities:																				States and political subdivisions	$	608		$	—		$	608		$	—
	States and political subdivisions	$	529		$	—		$	529		$	—
																					U.S. Treasury	21			21			—			—
	U.S. Treasury	20			20			—			—
																					U.S. government agencies	5			—			5			—
	U.S. government agencies	4			—			4			—
																					U.S. government sponsored enterprises	404			—			404			—
	U.S. government sponsored enterprises	308			—			308			—
																					Corporate	837			—			837			—
	Corporate	868			—			868			—
																					Trust preferred securities	14			—			—			14
	Trust preferred securities	4			—			—			4
																					Total debt securities	1,889			21			1,854			14
	Total debt securities	1,734			20			1,709			4
																					Mortgage-backed securities:
	Mortgage-backed securities:																				Residential mortgage-backed securities:
	Residential mortgage-backed securities:																				Government National Mortgage Association	70			—			70			—
	Government National Mortgage Association	40			—			40			—
																					Federal National Mortgage Association	414			—			414			—
	Federal National Mortgage Association	139			—			139			—
																					Federal Home Loan Mortgage Corporation	355			—			355			—
	Federal Home Loan Mortgage Corporation	159			—			159			—
																					Collateralized mortgage obligations:
	Collateralized mortgage obligations:																				Government National Mortgage Association	1,091			—			1,091			—
	Federal National Mortgage Association	761			—			761			—
																					Federal National Mortgage Association	1,474			—			1,474			—
	Federal Home Loan Mortgage Corporation	379			—			379			—
																					Federal Home Loan Mortgage Corporation	1,047			—			1,047			—
	Non-agency issued	13			—			13			—
																					Non-agency issued	61			—			61			—
	Total collateralized mortgage obligations	1,152			—			1,152			—
																					Total collateralized mortgage obligations	3,674			—			3,674			—
	Total residential mortgage-backed securities	1,490			—			1,490			—
																					Total residential mortgage-backed securities	4,513			—			4,513			—
	Commercial mortgage-backed securities, non-agency issued	1,831			—			1,831			—
																					Commercial mortgage-backed securities, non-agency issued	2,060			—			2,060			—
	Total mortgage-backed securities	3,321			—			3,321			—
																					Total mortgage-backed securities	6,573			—			6,573			—
	Collateralized loan obligations, non-agency issued	1,431			—			1,431
																					Collateralized loan obligations, non-agency issued	1,545			—			—			1,545
	Asset-backed securities collateralized by:
	Student loans	312			—			312			—										Asset-backed securities collateralized by:
																					Student loans	390			—			390			—
	Credit cards	73			—			73			—
																					Credit cards	75			—			75			—
	Auto loans	335			—			335			—
																					Auto loans	372			—			372			—
	Other	186			—			186			—
																					Other	119			—			119			—
	Total asset-backed securities	905			—			905			—
																					Total asset-backed securities	956			—			956			—
	Other	33			22			10			—
																					Other	31			23			8			—
	Total securities available for sale	7,423			43			7,376			4
																					Total securities available for sale	10,994			44			9,391			1,559
Loans held for sale (1)	50			—			50			—
																				Loans held for sale (1)	155			—			155			—
Derivatives	49			—			49			—
																				Derivatives	102			—			102			—
Total assets	$	7,522		$	43		$	7,476		$	4
																				Total assets	$	11,250		$	44		$	9,647		$	1,559
Liabilities:
Derivatives	$	50		$	—		$	50		$	—									Liabilities:
																				Derivatives	$	105		$	—		$	105		$	—

(1)	Represents loans for which we have elected the fair value option
																				(1)	Represents loans for which we have elected the fair value option
Summary of assets and liabilities measured at fair value on a nonrecurring basis	'																				'
	The following table summarizes our assets and liabilities measured at fair value on a nonrecurring basis for the years ended December 31:


		Fair Value Measurements													Total gains
		Total			Level 1			Level 2			Level 3				(losses)
	2013
	Collateral dependent impaired loans	$	32		$	—		$	20		$	12			$	(2	)

	2012
	Collateral dependent impaired loans	$	48		$	—		$	31		$	17			$	(2	)

Changes in Level 3 assets and liabilities measured at estimated fair value on a recurring basis	'																				'
	The changes in Level 3 assets and liabilities measured at estimated fair value on a recurring basis were as follows for the years ended December 31:


		2013										2012
		Trust			Collateralized			Total				Trust			Collateralized			Total
		preferred			loan obligations							preferred			loan obligations
		securities										securities
	Balance at beginning of period	$	14		$	1,545		$	1,559			$	25		$	—		$	25

	Transfers between level 2 and level 3(1)	—			(1,545		)	(1,545		)		—			158			158

	Purchases	—			—			—				—			1,352			1,352

	Settlements	(10		)	—			(10		)		(14		)	—			(14		)

	Gains included in other comprehensive income	1			—			1				3			35			38

	Losses included in earnings	(1		)	—			(1		)		—			—			—

	Balance at end of period	$	4		$	—		$	4			$	14		$	1,545		$	1,559


	-1	Our policy is to recognize the transfer at the beginning of the period.
Fair value measurements, valuation techniques and significant unobservable inputs	'																				'
	The table below provides a summary of our level 3 fair value measurements, valuation techniques, and the significant unobservable inputs at December 31:


		Fair			Valuation	Unobservable	Range (weighted average)
		Value			technique	input
	2012
	Collateralized loan obligations	$	1,545		Internally modeled	Market spreads	150 - 550 bps (213 bps)

Carrying value and estimated fair value of financial instruments	'																				'
	The carrying value and estimated fair value of our financial instruments, including those that are not measured and reported at fair value on a recurring basis or nonrecurring basis, are as follows at December 31:


		2013									2012
		Carrying value			Estimated fair			Fair value			Carrying value			Estimated fair			Fair value
					value			level						value			level
	Financial assets:
	Cash and cash equivalents	$	463		$	463		1			$	431		$	431		1

	Investment securities available for sale	7,423			7,423			1,2,3		(1)	10,994			10,994			1,2,3		(1)

	Investment securities held to maturity	4,042			3,988			2			1,300			1,374			2

	Federal Home Loan Bank and Federal Reserve Bank common stock	469			469			2			420			420			2

	Loans held for sale	50			50			2			155			155			2

	Loans and leases, net	21,230			21,774			2,3		(2)	19,547			20,213			2,3		(2)

	Derivatives	49			49			2			102			102			2

	Accrued interest receivable	103			103			2			108			108			2

	Financial liabilities:
	Deposits	$	26,665		$	26,695		2			$	27,677		$	27,852		2

	Borrowings	5,556			5,599			2			3,716			3,774			2

	Derivatives	50			50			2			105			105			2

	Accrued interest payable	10			10			2			10			10			2


	(1)	For a detailed breakout of our investment securities available for sale, refer to our table of recurring fair value measurements.

	-2	Loans and leases classified as level 2 are made up of $20 million and $31 million of collateral dependent impaired loans without significant adjustments made to appraised values at December 31, 2013 and 2012, respectively. All other loans and leases are classified as level 3.

Segment_Information_Tables

Segment Information (Tables)	12 Months Ended
	Dec. 31, 2013
Segment Reporting [Abstract]	'
Financial information of business segments	'
	Selected financial information for our segments follows for the years ended December 31:


		Banking		Financial		Consolidated
				services		total
	2013
	Net interest income	$	1,093	$	—	$	1,093

	Provision for credit losses	105		—		105

	Net interest income after provision for credit losses	988		—		988

	Noninterest income	298		67		366

	Amortization of intangibles	37		3		40

	Other noninterest expense	839		52		891

	Income before income taxes	411		12		423

	Income tax expense	123		5		128

	Net income	$	288	$	7	$	295

	2012
	Net interest income	$	1,023	$	—	$	1,023

	Provision for credit losses	92		—		92

	Net interest income after provision for credit losses	931		—		931

	Noninterest income	291		68		360

	Amortization of intangibles	41		4		45

	Other noninterest expense	955		51		1,006

	Income before income taxes	227		13		239

	Income tax expense	66		5		71

	Net income	$	161	$	8	$	168

	2011
	Net interest income	$	881	$	—	$	881

	Provision for credit losses	58		—		58

	Net interest income after provision for credit losses	823		—		823

	Noninterest income	180		65		245

	Amortization of intangibles	21		5		26

	Other noninterest expense	728		53		781

	Income before income taxes	254		8		262

	Income tax expense	85		3		88

	Net income	$	169	$	5	$	174

Condensed_Parent_Company_Only_1

Condensed Parent Company Only Financial Statements (Tables)	12 Months Ended
	Dec. 31, 2013
Condensed Financial Information of Parent Company Only Disclosure [Abstract]	'
Schedule of Condensed Balance Sheet	'


	Condensed Statements of Condition	2013			2012
	Assets:
	Cash and cash equivalents	$	390		$	415

	Investment securities available for sale	3			2

	Loan receivable from ESOP	21			22

	Investment in subsidiary	5,255			5,166

	Deferred taxes	34			16

	Other assets	13			34

	Total assets	$	5,715		$	5,655

	Liabilities and Stockholders’ Equity:

	Accounts payable and other liabilities	$	13		$	22

	Borrowings	709			707

	Stockholders’ equity	4,993			4,927

	Total liabilities and stockholders’ equity	$	5,715		$	5,655

Schedule of Condensed Income Statement	'


	Condensed Statements of Income	2013			2012			2011
	Interest income	$	2		$	7		$	2

	Dividends received from subsidiary	175			45			75

	Total interest and dividend income	177			52			77

	Interest expense	49			50			27

	Net interest income	128			3			50

	Noninterest income	2			3			(3		)

	Noninterest expense	30			27			25

	Income (loss) before income taxes and undisbursed income of subsidiary	100			(21		)	22

	Income tax benefit	(29		)	(24		)	(19		)
	Income before undisbursed income of subsidiary	129			3			42

	Undisbursed income of subsidiary	167			166			132

	Net income	295			168			174

	Preferred stock dividend and discount accretion	30			28			—

	Net income available to common stockholders	$	265		$	141		$	174


	Net income	$	295		$	168		$	174

	Other comprehensive (loss) income(1)	(95		)	89			10

	Total comprehensive income	$	200		$	258		$	184


	(1)	See Consolidated Statements of Comprehensive Income for other comprehensive income detail.
Schedule of Condensed Cash Flow Statement	'


	Condensed Statements of Cash Flows	2013			2012			2011
	Cash flows from operating activities:
	Net income	$	295		$	168		$	174

	Adjustments to reconcile net income to net cash provided by operating activities:
	Undisbursed income of subsidiaries	(167		)	(166		)	(132		)
	Stock-based compensation expense	9			11			8

	Deferred income tax (benefit) expense	(18		)	7			6

	Decrease in other assets	7			35			4

	Decrease in other liabilities	(9		)	(18		)	(9		)
	Net cash provided by operating activities	118			38			51

	Cash flows from investing activities:
	Principal payments received on securities available for sale	1			2			3

	Purchases of securities available for sale	(2		)	—			—

	Capital contributed to subsidiary	—			(215		)	(645		)

	Repayments from (loan to) subsidiary	—			215			(215		)

	Acquisitions, net of cash and cash equivalents	—			—			(43		)

	Repayment of ESOP loan receivable	1			1			2

	Other, net	(1		)	—			—

	Net cash provided by (used in) investing activities	—			3			(898		)

	Cash flows from financing activities:
	Proceeds from long-term borrowings, net	—			—			299

	Advance from subsidiary	—			—			9

	Issuance of common stock in follow-on stock offerings, net	—			—			468

	Issuance of preferred stock, net	—			—			338

	Purchase of treasury stock	—			—			(127		)

	Proceeds from exercise of stock options	—			—			6

	Dividends paid on preferred stock	(30		)	(28		)	—

	Dividends paid on common stock	(112		)	(112		)	(175		)
	Net cash (used in) provided by financing activities	(143		)	(140		)	818

	Net decrease in cash and cash equivalents	(25		)	(99		)	(29		)
	Cash and cash equivalents at beginning of year	415			514			543

	Cash and cash equivalents at end of year	$	390		$	415		$	514

Summary_of_Significant_Account2

Summary of Significant Accounting Policies (Details) (USD $)	12 Months Ended
	Dec. 31, 2013
	payment
	acquisition
Maturity period of cash and cash equivalents	'3 months
Number of consecutive payments of principal and interest for repayment of real estate loans	6
Number of days consumer loans secured by real estate are past due when we order broker price opinions and record partial or full charge-offs	'90 days
Number of days past due for residential mortgage and home equity loans and home equity lines of credit are charged off	'180 days
Number of days past due for other consumer loans are charged off for closed end loans	'120 days
Number of days past due for other consumer loans are charged off for open ended loans	'180 days
Minimum amount of nonaccrual business and commercial real estate loans evaluated individually for impairment	$200,000
Principal amount of loans modified in a troubled debt restructuring are considered to be impaired	200,000
Amount of allowance for credit losses related to acquired loans	0
Number of separate acquisitions	4
Loans that reviewed for each acquisition	'greater than $1Â million
Minimum amounts of principal and interest due under original terms	$200,000
Building [Member] \| Minimum [Member]	'
Useful life	'20 years
Building [Member] \| Maximum [Member]	'
Useful life	'39 years
Furniture and equipment \| Minimum [Member]	'
Useful life	'3 years
Furniture and equipment \| Maximum [Member]	'
Useful life	'10 years
Loans receivable [Member]	'
Minimum number of days past due for estimate future cash flows on acquired loans expect to fully collect	'90 days
Credit card receivable [Member]	'
Minimum number of days past due for estimate future cash flows on acquired loans expect to fully collect	'180 days
Originated loans [Member] \| Loans receivable [Member]	'
Minimum Number of Days Originated Loans are Past Due Prior to Deterioration in Credit Quality	'90 days

Acquisitions_Assets_Acquired_a

Acquisitions - Assets Acquired and Liabilities Assumed (Details ) (HSBC Bank Branches, USD $)	18-May-12
In Millions, unless otherwise specified	18-May-12
HSBC Bank Branches	'
Recognized amounts of identifiable assets acquired and (liabilities assumed), at fair value:	'
Cash and cash equivalents	$7,360	[1]
Loans	1,600
Core deposit and other intangibles	85
Other assets	72
Total assets acquired	9,117
Deposits	-9,855	[2]
Other liabilities	-33
Total liabilities assumed	-9,887
Goodwill	$770

[1]	Amount is net of $772 million deposit premium paid to HSBC.
[2]	Deposits reported exclude $0.5 billion in municipal deposits that were subject to a price concession.

Acquisitions_Acquired_Loans_De

Acquisitions - Acquired Loans (Details 1) (HSBC Bank Branches [Member], USD $)	18-May-12
In Millions, unless otherwise specified	18-May-12
HSBC Bank Branches [Member]	'
Business Acquisition [Line Items]	'
Contractually required principal and interest at acquisition	$758
Contractual cash flows not expected to be collected (nonaccretable discount)	-16
Expected cash flows at acquisition	742
Interest component of expected cash flows (accretable discount)	-91
Fair value of acquired loans (excluding lines of credit)	$651

Acquisitions_Details_Textual

Acquisitions (Details Textual) (USD $)

12 Months Ended

0 Months Ended

1 Months Ended

0 Months Ended

1 Months Ended

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Mar. 31, 2013

18-May-12

Dec. 31, 2012

18-May-12

Dec. 31, 2012

18-May-12

Dec. 31, 2012

18-May-12

Jul. 13, 2012

Jan. 31, 2012

Jul. 20, 2012

Sep. 07, 2012

Aug. 17, 2012

Jun. 22, 2012

Jun. 30, 2012

Jan. 31, 2012

HSBC Bank Branches [Member]

KeyBank [Member]

Community Bank [Member]

Five Star [Member]

Community Bank and Five Star [Member]

Branch

Core deposit intangible [Member]

Wealth management [Member]

Purchased Credit Card [Member]

HSBC Bank Branches [Member]

FNFG Bank Branches [Member]

HSBC Bank Branches [Member]

FNFG Bank Branches [Member]

HSBC Bank Branches [Member]

FNFG Bank Branches [Member]

Branch

Schedule of Business Acquisitions by Acquisition (Textual) [Abstract]

Branch locations acquired

137

Premium received by company for purchase assignments

$122,000,000

Amount of deposit premium for acquisition

772,000,000

Assets acquired under wealth management relationship

2,500,000,000

Acquired deposits subject to price concession

500,000,000

Branches to be transferred to purchaser

Number of branches for which purchase right to be assigned

Additional branches transferred to purchaser

Number of branches for which direct cost relates

Loans acquired by purchaser

256,500,000

107,000,000

55,400,000

18,000,000

58,600,000

Deposits acquired by purchaser

2,000,000,000

696,600,000

100,800,000

157,200,000

129,300,000

Deposit Premium Received on Sale of Branches

91,500,000

23,800,000

3,100,000

6,500,000

5,300,000

Core deposit intangible asset recognized

41,000,000

9,000,000

34,000,000

Estimated useful life intangible asset amortized

'3 years

'10 years

Reduction to goodwill

36,000,000

Merger and acquisition integration expenses

$178,000,000

$98,000,000

Investment_Securities_Availabl

Investment Securities - Available for Sale and Held to Maturity Securities (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Schedule of available for sale securities [Line Items]	'	'
Amortized cost for securities available for sale	$7,319	$10,658
Securities available for sale, unrealized gains	178	344
Securities available for sale, unrealized losses	-74	-8
Securities available for sale, fair value	7,423	10,994
Securities held-to-maturity, amortized cost	4,042	1,300
Securities held to maturity, unrealized gains	40	74
Securities held to maturity, unrealized losses	-94	0
Securities held-to-maturity, fair value	3,988	1,374
Residential mortgage-backed securities [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Securities held-to-maturity, amortized cost	4,037	'
Securities held to maturity, unrealized gains	40	'
Securities held to maturity, unrealized losses	-94	'
Securities held-to-maturity, fair value	3,983	'
Collateralized mortgage obligations [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Securities held-to-maturity, amortized cost	3,793	1,282
Securities held to maturity, unrealized gains	39	73
Securities held to maturity, unrealized losses	-90	0
Securities held-to-maturity, fair value	3,742	1,355
Government National Mortgage Association [Member] \| Residential mortgage-backed securities [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Securities held-to-maturity, amortized cost	17	6
Securities held to maturity, unrealized gains	0	0
Securities held to maturity, unrealized losses	0	0
Securities held-to-maturity, fair value	17	6
Government National Mortgage Association [Member] \| Collateralized mortgage obligations [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Securities held-to-maturity, amortized cost	1,713	1,006
Securities held to maturity, unrealized gains	26	49
Securities held to maturity, unrealized losses	-12	0
Securities held-to-maturity, fair value	1,727	1,055
Federal National Mortgage Association [Member] \| Residential mortgage-backed securities [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Securities held-to-maturity, amortized cost	146	5
Securities held to maturity, unrealized gains	0	0
Securities held to maturity, unrealized losses	-3	0
Securities held-to-maturity, fair value	143	5
Federal National Mortgage Association [Member] \| Collateralized mortgage obligations [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Securities held-to-maturity, amortized cost	1,074	18
Securities held to maturity, unrealized gains	0	1
Securities held to maturity, unrealized losses	-47	0
Securities held-to-maturity, fair value	1,027	19
Federal Home Loan Mortgage Corporation [Member] \| Residential mortgage-backed securities [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Securities held-to-maturity, amortized cost	81	7
Securities held to maturity, unrealized gains	0	0
Securities held to maturity, unrealized losses	-1	0
Securities held-to-maturity, fair value	81	7
Federal Home Loan Mortgage Corporation [Member] \| Collateralized mortgage obligations [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Securities held-to-maturity, amortized cost	1,007	257
Securities held to maturity, unrealized gains	12	24
Securities held to maturity, unrealized losses	-30	0
Securities held-to-maturity, fair value	989	281
U.S. government agencies debt securities [Member] \| Debt securities [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Securities held-to-maturity, amortized cost	5	'
Securities held to maturity, unrealized gains	0	'
Securities held to maturity, unrealized losses	0	'
Securities held-to-maturity, fair value	5	'
Debt securities [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Amortized cost for securities available for sale	1,705	1,830
Securities available for sale, unrealized gains	40	63
Securities available for sale, unrealized losses	-12	-5
Securities available for sale, fair value	1,734	1,889
Debt securities [Member] \| States and political subdivisions [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Amortized cost for securities available for sale	516	587
Securities available for sale, unrealized gains	14	21
Securities available for sale, unrealized losses	0	0
Securities available for sale, fair value	529	608
Debt securities [Member] \| U.S. Treasury [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Amortized cost for securities available for sale	20	20
Securities available for sale, unrealized gains	0	1
Securities available for sale, unrealized losses	0	0
Securities available for sale, fair value	20	21
Debt securities [Member] \| U.S. government agencies debt securities [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Amortized cost for securities available for sale	4	5
Securities available for sale, unrealized gains	0	0
Securities available for sale, unrealized losses	0	0
Securities available for sale, fair value	4	5
Debt securities [Member] \| U.S. government sponsored enterprises [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Amortized cost for securities available for sale	302	390
Securities available for sale, unrealized gains	7	13
Securities available for sale, unrealized losses	-1	0
Securities available for sale, fair value	308	404
Debt securities [Member] \| Corporate [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Amortized cost for securities available for sale	859	812
Securities available for sale, unrealized gains	19	28
Securities available for sale, unrealized losses	-10	-3
Securities available for sale, fair value	868	837
Debt securities [Member] \| Trust preferred securities [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Amortized cost for securities available for sale	4	16
Securities available for sale, unrealized gains	0	0
Securities available for sale, unrealized losses	0	-1
Securities available for sale, fair value	4	14
Mortgage-backed securities [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Amortized cost for securities available for sale	3,294	6,351
Securities available for sale, unrealized gains	85	225
Securities available for sale, unrealized losses	-58	-3
Securities available for sale, fair value	3,321	6,573
Residential mortgage-backed securities [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Amortized cost for securities available for sale	1,534	4,422
Securities available for sale, unrealized gains	12	93
Securities available for sale, unrealized losses	-56	-1
Securities available for sale, fair value	1,490	4,513
Residential mortgage-backed securities [Member] \| Government National Mortgage Association [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Amortized cost for securities available for sale	41	68
Securities available for sale, unrealized gains	1	2
Securities available for sale, unrealized losses	-2	0
Securities available for sale, fair value	40	70
Residential mortgage-backed securities [Member] \| Federal National Mortgage Association [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Amortized cost for securities available for sale	134	394
Securities available for sale, unrealized gains	5	20
Securities available for sale, unrealized losses	0	0
Securities available for sale, fair value	139	414
Residential mortgage-backed securities [Member] \| Federal Home Loan Mortgage Corporation [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Amortized cost for securities available for sale	154	343
Securities available for sale, unrealized gains	5	12
Securities available for sale, unrealized losses	0	0
Securities available for sale, fair value	159	355
Collateralized mortgage obligations [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Amortized cost for securities available for sale	1,205	3,617
Securities available for sale, unrealized gains	1	58
Securities available for sale, unrealized losses	-54	-1
Securities available for sale, fair value	1,152	3,674
Collateralized mortgage obligations [Member] \| Government National Mortgage Association [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Amortized cost for securities available for sale	'	1,060
Securities available for sale, unrealized gains	'	31
Securities available for sale, unrealized losses	'	0
Securities available for sale, fair value	'	1,091
Collateralized mortgage obligations [Member] \| Federal National Mortgage Association [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Amortized cost for securities available for sale	797	1,460
Securities available for sale, unrealized gains	0	15
Securities available for sale, unrealized losses	-36	-1
Securities available for sale, fair value	761	1,474
Collateralized mortgage obligations [Member] \| Federal Home Loan Mortgage Corporation [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Amortized cost for securities available for sale	396	1,036
Securities available for sale, unrealized gains	0	11
Securities available for sale, unrealized losses	-17	0
Securities available for sale, fair value	379	1,047
Collateralized mortgage obligations [Member] \| Non-agency issued [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Amortized cost for securities available for sale	12	60
Securities available for sale, unrealized gains	1	2
Securities available for sale, unrealized losses	0	0
Securities available for sale, fair value	13	61
Commercial mortgage-backed securities, non-agency issued [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Amortized cost for securities available for sale	1,759	1,930
Securities available for sale, unrealized gains	74	132
Securities available for sale, unrealized losses	-2	-1
Securities available for sale, fair value	1,831	2,060
Collateralized loan obligations, non-agency issued [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Amortized cost for securities available for sale	1,392	1,510
Securities available for sale, unrealized gains	40	35
Securities available for sale, unrealized losses	-2	-1
Securities available for sale, fair value	1,431	1,545
Asset-backed securities [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Amortized cost for securities available for sale	896	936
Securities available for sale, unrealized gains	11	20
Securities available for sale, unrealized losses	-2	0
Securities available for sale, fair value	905	956
Asset-backed securities [Member] \| Student loans [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Amortized cost for securities available for sale	306	378
Securities available for sale, unrealized gains	6	12
Securities available for sale, unrealized losses	0	0
Securities available for sale, fair value	312	390
Asset-backed securities [Member] \| Credit cards [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Amortized cost for securities available for sale	73	74
Securities available for sale, unrealized gains	0	1
Securities available for sale, unrealized losses	-1	0
Securities available for sale, fair value	73	75
Asset-backed securities [Member] \| Auto loans [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Amortized cost for securities available for sale	331	367
Securities available for sale, unrealized gains	4	6
Securities available for sale, unrealized losses	0	0
Securities available for sale, fair value	335	372
Asset-backed securities [Member] \| Other [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Amortized cost for securities available for sale	186	118
Securities available for sale, unrealized gains	1	1
Securities available for sale, unrealized losses	-1	0
Securities available for sale, fair value	186	119
Other securities [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Amortized cost for securities available for sale	33	31
Securities available for sale, unrealized gains	1	1
Securities available for sale, unrealized losses	0	0
Securities available for sale, fair value	$33	$31

Investment_Securities_Availabl1

Investment Securities - Available for Sale and Held to Maturity Securities Continuous Unrealized Loss Position (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified	Security	Security
Schedule of available for sale securities [Line Items]	'	'
Fair value of available-for-sale securities in unrealized loss position less than 12 months	$2,054	$741
Unrealized losses of available for sale securities in unrealized loss position less than 12 months	-69	-5
Available-for-sale securities in unrealized loss position less than 12 months, count	341	143
Fair value of available-for-sale securities in unrealized loss position 12 months or longer	122	134
Unrealized losses of available for sale securities in unrealized loss position 12 month or longer	-5	-3
Available-for-sale securities in unrealized loss position 12 months or longer, count	47	27
Total fair value available-for-sale securities	2,176	874
Total unrealized losses, available for sale securities	-74	-8
Available for sale securities in unrealized loss position, count	388	170
Fair value of held-to-maturity securities in unrealized loss position less than 12 months	2,353	25
Unrealized losses of held to maturity securities in unrealized loss position less than 12 months	-94	0
Held-to-maturity securities in unrealized loss position less than 12 months, count	202	3
Fair value held-to-maturity securities in unrealized loss position 12 months or longer	22	0
Unrealized losses of held to maturity securities in unrealized loss position 12 months or longer	-1	0
Held-to-maturiy securities in unrealized loss position longer than 12 months, count	1	0
Total fair value of held-to-maturity securities	2,376	25
Total unrealized losses of held to maturity securities	-94	0
Held-to-maturity securities in unrealized loss position, count	203	3
Residential mortgage-backed securities [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Fair value of held-to-maturity securities in unrealized loss position less than 12 months	2,348	'
Unrealized losses of held to maturity securities in unrealized loss position less than 12 months	-94	'
Held-to-maturity securities in unrealized loss position less than 12 months, count	201	'
Fair value held-to-maturity securities in unrealized loss position 12 months or longer	22	'
Unrealized losses of held to maturity securities in unrealized loss position 12 months or longer	-1	'
Held-to-maturiy securities in unrealized loss position longer than 12 months, count	1	'
Total fair value of held-to-maturity securities	2,371	'
Total unrealized losses of held to maturity securities	-94	'
Held-to-maturity securities in unrealized loss position, count	202	'
Collateralized mortgage obligations [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Fair value of held-to-maturity securities in unrealized loss position less than 12 months	2,160	'
Unrealized losses of held to maturity securities in unrealized loss position less than 12 months	-89	'
Held-to-maturity securities in unrealized loss position less than 12 months, count	152	'
Fair value held-to-maturity securities in unrealized loss position 12 months or longer	22	'
Unrealized losses of held to maturity securities in unrealized loss position 12 months or longer	-1	'
Held-to-maturiy securities in unrealized loss position longer than 12 months, count	1	'
Total fair value of held-to-maturity securities	2,182	'
Total unrealized losses of held to maturity securities	-90	'
Held-to-maturity securities in unrealized loss position, count	153	'
Government National Mortgage Association [Member] \| Residential mortgage-backed securities [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Fair value of held-to-maturity securities in unrealized loss position less than 12 months	11	2
Unrealized losses of held to maturity securities in unrealized loss position less than 12 months	0	0
Held-to-maturity securities in unrealized loss position less than 12 months, count	4	1
Fair value held-to-maturity securities in unrealized loss position 12 months or longer	0	0
Unrealized losses of held to maturity securities in unrealized loss position 12 months or longer	0	0
Held-to-maturiy securities in unrealized loss position longer than 12 months, count	0	0
Total fair value of held-to-maturity securities	11	2
Total unrealized losses of held to maturity securities	0	0
Held-to-maturity securities in unrealized loss position, count	4	1
Government National Mortgage Association [Member] \| Collateralized mortgage obligations [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Fair value of held-to-maturity securities in unrealized loss position less than 12 months	520	23
Unrealized losses of held to maturity securities in unrealized loss position less than 12 months	-12	0
Held-to-maturity securities in unrealized loss position less than 12 months, count	58	2
Fair value held-to-maturity securities in unrealized loss position 12 months or longer	0	0
Unrealized losses of held to maturity securities in unrealized loss position 12 months or longer	0	0
Held-to-maturiy securities in unrealized loss position longer than 12 months, count	0	0
Total fair value of held-to-maturity securities	520	23
Total unrealized losses of held to maturity securities	-12	0
Held-to-maturity securities in unrealized loss position, count	58	2
Federal National Mortgage Association [Member] \| Residential mortgage-backed securities [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Fair value of held-to-maturity securities in unrealized loss position less than 12 months	119	'
Unrealized losses of held to maturity securities in unrealized loss position less than 12 months	-3	'
Held-to-maturity securities in unrealized loss position less than 12 months, count	30	'
Fair value held-to-maturity securities in unrealized loss position 12 months or longer	0	'
Unrealized losses of held to maturity securities in unrealized loss position 12 months or longer	0	'
Held-to-maturiy securities in unrealized loss position longer than 12 months, count	0	'
Total fair value of held-to-maturity securities	119	'
Total unrealized losses of held to maturity securities	-3	'
Held-to-maturity securities in unrealized loss position, count	30	'
Federal National Mortgage Association [Member] \| Collateralized mortgage obligations [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Fair value of held-to-maturity securities in unrealized loss position less than 12 months	1,011	'
Unrealized losses of held to maturity securities in unrealized loss position less than 12 months	-47	'
Held-to-maturity securities in unrealized loss position less than 12 months, count	59	'
Fair value held-to-maturity securities in unrealized loss position 12 months or longer	0	'
Unrealized losses of held to maturity securities in unrealized loss position 12 months or longer	0	'
Held-to-maturiy securities in unrealized loss position longer than 12 months, count	0	'
Total fair value of held-to-maturity securities	1,011	'
Total unrealized losses of held to maturity securities	-47	'
Held-to-maturity securities in unrealized loss position, count	59	'
Federal Home Loan Mortgage Corporation [Member] \| Residential mortgage-backed securities [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Fair value of held-to-maturity securities in unrealized loss position less than 12 months	59	'
Unrealized losses of held to maturity securities in unrealized loss position less than 12 months	-1	'
Held-to-maturity securities in unrealized loss position less than 12 months, count	15	'
Fair value held-to-maturity securities in unrealized loss position 12 months or longer	0	'
Unrealized losses of held to maturity securities in unrealized loss position 12 months or longer	0	'
Held-to-maturiy securities in unrealized loss position longer than 12 months, count	0	'
Total fair value of held-to-maturity securities	59	'
Total unrealized losses of held to maturity securities	-1	'
Held-to-maturity securities in unrealized loss position, count	15	'
Federal Home Loan Mortgage Corporation [Member] \| Collateralized mortgage obligations [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Fair value of held-to-maturity securities in unrealized loss position less than 12 months	629	'
Unrealized losses of held to maturity securities in unrealized loss position less than 12 months	-30	'
Held-to-maturity securities in unrealized loss position less than 12 months, count	35	'
Fair value held-to-maturity securities in unrealized loss position 12 months or longer	22	'
Unrealized losses of held to maturity securities in unrealized loss position 12 months or longer	-1	'
Held-to-maturiy securities in unrealized loss position longer than 12 months, count	1	'
Total fair value of held-to-maturity securities	652	'
Total unrealized losses of held to maturity securities	-30	'
Held-to-maturity securities in unrealized loss position, count	36	'
Debt securities [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Fair value of available-for-sale securities in unrealized loss position less than 12 months	315	115
Unrealized losses of available for sale securities in unrealized loss position less than 12 months	-9	-2
Available-for-sale securities in unrealized loss position less than 12 months, count	201	70
Fair value of available-for-sale securities in unrealized loss position 12 months or longer	79	64
Unrealized losses of available for sale securities in unrealized loss position 12 month or longer	-2	-2
Available-for-sale securities in unrealized loss position 12 months or longer, count	32	15
Total fair value available-for-sale securities	394	178
Total unrealized losses, available for sale securities	-12	-5
Available for sale securities in unrealized loss position, count	233	85
Collateralized mortgage obligations [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Fair value of available-for-sale securities in unrealized loss position less than 12 months	1,106	350
Unrealized losses of available for sale securities in unrealized loss position less than 12 months	-54	-1
Available-for-sale securities in unrealized loss position less than 12 months, count	63	18
Fair value of available-for-sale securities in unrealized loss position 12 months or longer	0	4
Unrealized losses of available for sale securities in unrealized loss position 12 month or longer	0	0
Available-for-sale securities in unrealized loss position 12 months or longer, count	0	1
Total fair value available-for-sale securities	1,106	354
Total unrealized losses, available for sale securities	-54	-1
Available for sale securities in unrealized loss position, count	63	19
Residential mortgage-backed securities [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Fair value of available-for-sale securities in unrealized loss position less than 12 months	1,106	374
Unrealized losses of available for sale securities in unrealized loss position less than 12 months	-54	-1
Available-for-sale securities in unrealized loss position less than 12 months, count	66	31
Fair value of available-for-sale securities in unrealized loss position 12 months or longer	19	4
Unrealized losses of available for sale securities in unrealized loss position 12 month or longer	-2	0
Available-for-sale securities in unrealized loss position 12 months or longer, count	9	3
Total fair value available-for-sale securities	1,125	379
Total unrealized losses, available for sale securities	-56	-1
Available for sale securities in unrealized loss position, count	75	34
Commercial mortgage-backed securities, non-agency issued [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Fair value of available-for-sale securities in unrealized loss position less than 12 months	158	30
Unrealized losses of available for sale securities in unrealized loss position less than 12 months	-2	-1
Available-for-sale securities in unrealized loss position less than 12 months, count	15	5
Fair value of available-for-sale securities in unrealized loss position 12 months or longer	12	32
Unrealized losses of available for sale securities in unrealized loss position 12 month or longer	0	-1
Available-for-sale securities in unrealized loss position 12 months or longer, count	3	4
Total fair value available-for-sale securities	170	61
Total unrealized losses, available for sale securities	-2	-1
Available for sale securities in unrealized loss position, count	18	9
Mortgage-backed securities [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Fair value of available-for-sale securities in unrealized loss position less than 12 months	1,264	404
Unrealized losses of available for sale securities in unrealized loss position less than 12 months	-56	-2
Available-for-sale securities in unrealized loss position less than 12 months, count	81	36
Fair value of available-for-sale securities in unrealized loss position 12 months or longer	32	36
Unrealized losses of available for sale securities in unrealized loss position 12 month or longer	-2	-1
Available-for-sale securities in unrealized loss position 12 months or longer, count	12	7
Total fair value available-for-sale securities	1,296	440
Total unrealized losses, available for sale securities	-58	-3
Available for sale securities in unrealized loss position, count	93	43
Collateralized loan obligations, non-agency issued [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Fair value of available-for-sale securities in unrealized loss position less than 12 months	261	168
Unrealized losses of available for sale securities in unrealized loss position less than 12 months	-2	-1
Available-for-sale securities in unrealized loss position less than 12 months, count	28	25
Fair value of available-for-sale securities in unrealized loss position 12 months or longer	3	0
Unrealized losses of available for sale securities in unrealized loss position 12 month or longer	0	0
Available-for-sale securities in unrealized loss position 12 months or longer, count	1	0
Total fair value available-for-sale securities	264	168
Total unrealized losses, available for sale securities	-2	-1
Available for sale securities in unrealized loss position, count	29	25
Asset-backed securities [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Fair value of available-for-sale securities in unrealized loss position less than 12 months	200	54
Unrealized losses of available for sale securities in unrealized loss position less than 12 months	-2	0
Available-for-sale securities in unrealized loss position less than 12 months, count	28	12
Fair value of available-for-sale securities in unrealized loss position 12 months or longer	0	26
Unrealized losses of available for sale securities in unrealized loss position 12 month or longer	0	0
Available-for-sale securities in unrealized loss position 12 months or longer, count	0	2
Total fair value available-for-sale securities	200	80
Total unrealized losses, available for sale securities	-2	0
Available for sale securities in unrealized loss position, count	28	14
Other securities [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Fair value of available-for-sale securities in unrealized loss position less than 12 months	14	0
Unrealized losses of available for sale securities in unrealized loss position less than 12 months	0	0
Available-for-sale securities in unrealized loss position less than 12 months, count	3	0
Fair value of available-for-sale securities in unrealized loss position 12 months or longer	8	8
Unrealized losses of available for sale securities in unrealized loss position 12 month or longer	0	0
Available-for-sale securities in unrealized loss position 12 months or longer, count	2	3
Total fair value available-for-sale securities	22	8
Total unrealized losses, available for sale securities	0	0
Available for sale securities in unrealized loss position, count	5	3
Student loans [Member] \| Asset-backed securities [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Fair value of available-for-sale securities in unrealized loss position less than 12 months	67	2
Unrealized losses of available for sale securities in unrealized loss position less than 12 months	0	0
Available-for-sale securities in unrealized loss position less than 12 months, count	8	1
Fair value of available-for-sale securities in unrealized loss position 12 months or longer	0	26
Unrealized losses of available for sale securities in unrealized loss position 12 month or longer	0	0
Available-for-sale securities in unrealized loss position 12 months or longer, count	0	1
Total fair value available-for-sale securities	67	28
Total unrealized losses, available for sale securities	0	0
Available for sale securities in unrealized loss position, count	8	2
Credit cards [Member] \| Asset-backed securities [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Fair value of available-for-sale securities in unrealized loss position less than 12 months	36	6
Unrealized losses of available for sale securities in unrealized loss position less than 12 months	-1	0
Available-for-sale securities in unrealized loss position less than 12 months, count	4	2
Fair value of available-for-sale securities in unrealized loss position 12 months or longer	0	0
Unrealized losses of available for sale securities in unrealized loss position 12 month or longer	0	0
Available-for-sale securities in unrealized loss position 12 months or longer, count	0	0
Total fair value available-for-sale securities	36	6
Total unrealized losses, available for sale securities	-1	0
Available for sale securities in unrealized loss position, count	4	2
Auto loans [Member] \| Asset-backed securities [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Fair value of available-for-sale securities in unrealized loss position less than 12 months	25	42
Unrealized losses of available for sale securities in unrealized loss position less than 12 months	0	0
Available-for-sale securities in unrealized loss position less than 12 months, count	5	7
Fair value of available-for-sale securities in unrealized loss position 12 months or longer	0	0
Unrealized losses of available for sale securities in unrealized loss position 12 month or longer	0	0
Available-for-sale securities in unrealized loss position 12 months or longer, count	0	0
Total fair value available-for-sale securities	25	42
Total unrealized losses, available for sale securities	0	0
Available for sale securities in unrealized loss position, count	5	7
Other [Member] \| Asset-backed securities [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Fair value of available-for-sale securities in unrealized loss position less than 12 months	72	5
Unrealized losses of available for sale securities in unrealized loss position less than 12 months	-1	0
Available-for-sale securities in unrealized loss position less than 12 months, count	11	2
Fair value of available-for-sale securities in unrealized loss position 12 months or longer	0	0
Unrealized losses of available for sale securities in unrealized loss position 12 month or longer	0	0
Available-for-sale securities in unrealized loss position 12 months or longer, count	0	1
Total fair value available-for-sale securities	72	5
Total unrealized losses, available for sale securities	-1	0
Available for sale securities in unrealized loss position, count	11	3
States and political subdivisions [Member] \| Debt securities [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Fair value of available-for-sale securities in unrealized loss position less than 12 months	13	21
Unrealized losses of available for sale securities in unrealized loss position less than 12 months	0	0
Available-for-sale securities in unrealized loss position less than 12 months, count	25	42
Fair value of available-for-sale securities in unrealized loss position 12 months or longer	3	4
Unrealized losses of available for sale securities in unrealized loss position 12 month or longer	0	0
Available-for-sale securities in unrealized loss position 12 months or longer, count	7	5
Total fair value available-for-sale securities	16	26
Total unrealized losses, available for sale securities	0	0
Available for sale securities in unrealized loss position, count	32	47
U.S. government agencies debt securities [Member] \| Debt securities [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Fair value of held-to-maturity securities in unrealized loss position less than 12 months	5	'
Unrealized losses of held to maturity securities in unrealized loss position less than 12 months	0	'
Held-to-maturity securities in unrealized loss position less than 12 months, count	1	'
Fair value held-to-maturity securities in unrealized loss position 12 months or longer	0	'
Unrealized losses of held to maturity securities in unrealized loss position 12 months or longer	0	'
Held-to-maturiy securities in unrealized loss position longer than 12 months, count	0	'
Total fair value of held-to-maturity securities	5	'
Total unrealized losses of held to maturity securities	0	'
Held-to-maturity securities in unrealized loss position, count	1	'
U.S. government agencies debt securities [Member] \| Debt securities [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Fair value of available-for-sale securities in unrealized loss position less than 12 months	1	0
Unrealized losses of available for sale securities in unrealized loss position less than 12 months	0	0
Available-for-sale securities in unrealized loss position less than 12 months, count	5	0
Fair value of available-for-sale securities in unrealized loss position 12 months or longer	2	2
Unrealized losses of available for sale securities in unrealized loss position 12 month or longer	0	0
Available-for-sale securities in unrealized loss position 12 months or longer, count	2	2
Total fair value available-for-sale securities	3	2
Total unrealized losses, available for sale securities	0	0
Available for sale securities in unrealized loss position, count	7	2
U.S. government sponsored enterprises [Member] \| Debt securities [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Fair value of available-for-sale securities in unrealized loss position less than 12 months	70	'
Unrealized losses of available for sale securities in unrealized loss position less than 12 months	-1	'
Available-for-sale securities in unrealized loss position less than 12 months, count	6	'
Fair value of available-for-sale securities in unrealized loss position 12 months or longer	0	'
Unrealized losses of available for sale securities in unrealized loss position 12 month or longer	0	'
Available-for-sale securities in unrealized loss position 12 months or longer, count	0	'
Total fair value available-for-sale securities	70	'
Total unrealized losses, available for sale securities	-1	'
Available for sale securities in unrealized loss position, count	6	'
Corporate [Member] \| Debt securities [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Fair value of available-for-sale securities in unrealized loss position less than 12 months	228	92
Unrealized losses of available for sale securities in unrealized loss position less than 12 months	-8	-2
Available-for-sale securities in unrealized loss position less than 12 months, count	164	27
Fair value of available-for-sale securities in unrealized loss position 12 months or longer	74	44
Unrealized losses of available for sale securities in unrealized loss position 12 month or longer	-2	-1
Available-for-sale securities in unrealized loss position 12 months or longer, count	23	2
Total fair value available-for-sale securities	302	136
Total unrealized losses, available for sale securities	-10	-3
Available for sale securities in unrealized loss position, count	187	29
Trust preferred securities [Member] \| Debt securities [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Fair value of available-for-sale securities in unrealized loss position less than 12 months	4	1
Unrealized losses of available for sale securities in unrealized loss position less than 12 months	0	0
Available-for-sale securities in unrealized loss position less than 12 months, count	1	1
Fair value of available-for-sale securities in unrealized loss position 12 months or longer	0	13
Unrealized losses of available for sale securities in unrealized loss position 12 month or longer	0	-1
Available-for-sale securities in unrealized loss position 12 months or longer, count	0	6
Total fair value available-for-sale securities	4	14
Total unrealized losses, available for sale securities	0	-1
Available for sale securities in unrealized loss position, count	1	7
Government National Mortgage Association [Member] \| Residential mortgage-backed securities [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Fair value of available-for-sale securities in unrealized loss position less than 12 months	0	23
Unrealized losses of available for sale securities in unrealized loss position less than 12 months	0	0
Available-for-sale securities in unrealized loss position less than 12 months, count	0	6
Fair value of available-for-sale securities in unrealized loss position 12 months or longer	19	0
Unrealized losses of available for sale securities in unrealized loss position 12 month or longer	-2	0
Available-for-sale securities in unrealized loss position 12 months or longer, count	6	0
Total fair value available-for-sale securities	19	23
Total unrealized losses, available for sale securities	-2	0
Available for sale securities in unrealized loss position, count	6	6
Federal National Mortgage Association [Member] \| Collateralized mortgage obligations [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Fair value of available-for-sale securities in unrealized loss position less than 12 months	744	232
Unrealized losses of available for sale securities in unrealized loss position less than 12 months	-36	-1
Available-for-sale securities in unrealized loss position less than 12 months, count	41	12
Fair value of available-for-sale securities in unrealized loss position 12 months or longer	0	0
Unrealized losses of available for sale securities in unrealized loss position 12 month or longer	0	0
Available-for-sale securities in unrealized loss position 12 months or longer, count	0	0
Total fair value available-for-sale securities	744	232
Total unrealized losses, available for sale securities	-36	-1
Available for sale securities in unrealized loss position, count	41	12
Federal National Mortgage Association [Member] \| Residential mortgage-backed securities [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Fair value of available-for-sale securities in unrealized loss position less than 12 months	0	1
Unrealized losses of available for sale securities in unrealized loss position less than 12 months	0	0
Available-for-sale securities in unrealized loss position less than 12 months, count	3	7
Fair value of available-for-sale securities in unrealized loss position 12 months or longer	0	0
Unrealized losses of available for sale securities in unrealized loss position 12 month or longer	0	0
Available-for-sale securities in unrealized loss position 12 months or longer, count	3	2
Total fair value available-for-sale securities	1	2
Total unrealized losses, available for sale securities	0	0
Available for sale securities in unrealized loss position, count	6	9
Federal Home Loan Mortgage Corporation [Member] \| Collateralized mortgage obligations [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Fair value of available-for-sale securities in unrealized loss position less than 12 months	361	118
Unrealized losses of available for sale securities in unrealized loss position less than 12 months	-17	0
Available-for-sale securities in unrealized loss position less than 12 months, count	19	6
Fair value of available-for-sale securities in unrealized loss position 12 months or longer	0	0
Unrealized losses of available for sale securities in unrealized loss position 12 month or longer	0	0
Available-for-sale securities in unrealized loss position 12 months or longer, count	0	0
Total fair value available-for-sale securities	361	118
Total unrealized losses, available for sale securities	-17	0
Available for sale securities in unrealized loss position, count	19	6
Non-agency issued [Member] \| Collateralized mortgage obligations [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Fair value of available-for-sale securities in unrealized loss position less than 12 months	1	0
Unrealized losses of available for sale securities in unrealized loss position less than 12 months	0	0
Available-for-sale securities in unrealized loss position less than 12 months, count	3	0
Fair value of available-for-sale securities in unrealized loss position 12 months or longer	0	4
Unrealized losses of available for sale securities in unrealized loss position 12 month or longer	0	0
Available-for-sale securities in unrealized loss position 12 months or longer, count	0	1
Total fair value available-for-sale securities	1	4
Total unrealized losses, available for sale securities	$0	$0
Available for sale securities in unrealized loss position, count	3	1

Investment_Securities_Maturiti

Investment Securities - Maturities of Available for Sale and Held to Maturity Debt Securities (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Scheduled contractual maturities of investment securities [Line Items]	'	'
Debt securities, amortized cost within one year	$228	'
Debt securities, fair value within one year	229	'
Debt securities, amortized cost after one year through five years	875	'
Debt securities, fair value after one year through five years	902	'
Debt securities, amortized cost after five years through ten years	592	'
Debt securities, fair value after five years through ten years	592	'
Debt securities, amortized cost after ten years	16	'
Debt securities, fair value after ten years	15	'
Debt securities, amortized cost	1,710	'
Debt securities, fair value	1,739	'
Mortgage-backed securities, amortized cost	7,331	'
Mortgage-backed securities, fair value	7,304	'
Amortized cost for securities available for sale	7,319	10,658
Investment securities available for sale	7,423	10,994
Total available for sale and held to maturity securities, amortized cost	11,362	'
Total available for sale and held to maturity, fair value	11,411	'
Collateralized loan obligations, non-agency issued [Member]	'	'
Scheduled contractual maturities of investment securities [Line Items]	'	'
Amortized cost for securities available for sale	1,392	1,510
Investment securities available for sale	1,431	1,545
Asset-backed securities [Member]	'	'
Scheduled contractual maturities of investment securities [Line Items]	'	'
Amortized cost for securities available for sale	896	936
Investment securities available for sale	905	956
Other securities [Member]	'	'
Scheduled contractual maturities of investment securities [Line Items]	'	'
Amortized cost for securities available for sale	33	31
Investment securities available for sale	$33	$31

Investment_Securities_Investme

Investment Securities Investment Securities - Schedule of Available for Sale Securities Transferred to Held to Maturity Securities (Details) (USD $)	Dec. 31, 2013	Mar. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
In Millions, unless otherwise specified	Dec. 31, 2013	Mar. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Schedule of available for sale securities [Line Items]	'	'	'	'
Available for sale securities transferred to Hhld to maturity, amortized cost	'	$2,946	'	'
Available for sale securities, transferred to held to maturity, unrealized gains	'	59	'	'
Available for sale securities transferred to held to maturity, unrealized losses	'	-4	'	'
Securities transferred from available for sale to held to maturity, fair value	3,001	3,001	0	1,994
Collateralized mortgage obligations [Member]	'	'	'	'
Schedule of available for sale securities [Line Items]	'	'	'	'
Available for sale securities transferred to Hhld to maturity, amortized cost	'	2,662	'	'
Available for sale securities, transferred to held to maturity, unrealized gains	'	42	'	'
Available for sale securities transferred to held to maturity, unrealized losses	'	-4	'	'
Securities transferred from available for sale to held to maturity, fair value	'	2,699	'	'
Government National Mortgage Association [Member] \| Residential mortgage-backed securities [Member]	'	'	'	'
Schedule of available for sale securities [Line Items]	'	'	'	'
Available for sale securities transferred to Hhld to maturity, amortized cost	'	15	'	'
Available for sale securities, transferred to held to maturity, unrealized gains	'	1	'	'
Available for sale securities transferred to held to maturity, unrealized losses	'	0	'	'
Securities transferred from available for sale to held to maturity, fair value	'	15	'	'
Government National Mortgage Association [Member] \| Collateralized mortgage obligations [Member]	'	'	'	'
Schedule of available for sale securities [Line Items]	'	'	'	'
Available for sale securities transferred to Hhld to maturity, amortized cost	'	885	'	'
Available for sale securities, transferred to held to maturity, unrealized gains	'	26	'	'
Available for sale securities transferred to held to maturity, unrealized losses	'	0	'	'
Securities transferred from available for sale to held to maturity, fair value	'	910	'	'
Federal National Mortgage Association [Member] \| Residential mortgage-backed securities [Member]	'	'	'	'
Schedule of available for sale securities [Line Items]	'	'	'	'
Available for sale securities transferred to Hhld to maturity, amortized cost	'	173	'	'
Available for sale securities, transferred to held to maturity, unrealized gains	'	12	'	'
Available for sale securities transferred to held to maturity, unrealized losses	'	0	'	'
Securities transferred from available for sale to held to maturity, fair value	'	185	'	'
Federal National Mortgage Association [Member] \| Collateralized mortgage obligations [Member]	'	'	'	'
Schedule of available for sale securities [Line Items]	'	'	'	'
Available for sale securities transferred to Hhld to maturity, amortized cost	'	1,019	'	'
Available for sale securities, transferred to held to maturity, unrealized gains	'	9	'	'
Available for sale securities transferred to held to maturity, unrealized losses	'	-3	'	'
Securities transferred from available for sale to held to maturity, fair value	'	1,026	'	'
Federal Home Loan Mortgage Corporation [Member] \| Residential mortgage-backed securities [Member]	'	'	'	'
Schedule of available for sale securities [Line Items]	'	'	'	'
Available for sale securities transferred to Hhld to maturity, amortized cost	'	96	'	'
Available for sale securities, transferred to held to maturity, unrealized gains	'	5	'	'
Available for sale securities transferred to held to maturity, unrealized losses	'	0	'	'
Securities transferred from available for sale to held to maturity, fair value	'	102	'	'
Federal Home Loan Mortgage Corporation [Member] \| Collateralized mortgage obligations [Member]	'	'	'	'
Schedule of available for sale securities [Line Items]	'	'	'	'
Available for sale securities transferred to Hhld to maturity, amortized cost	'	758	'	'
Available for sale securities, transferred to held to maturity, unrealized gains	'	7	'	'
Available for sale securities transferred to held to maturity, unrealized losses	'	-2	'	'
Securities transferred from available for sale to held to maturity, fair value	'	$763	'	'

Investment_Securities_Details_

Investment Securities (Details Textual) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Mar. 31, 2013	Jun. 30, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Mar. 31, 2013	Mortgage-backed securities [Member]	New York common stock [Member]	New York common stock [Member]	Pittsburgh common stock [Member]	Boston common stock [Member]	Boston common stock [Member]
Investment Securities (Textual) [Abstract]	'	'	'	'	'	'	'	'	'	'
Contractual maturity period of securities (in years)	'10 years	'	'	'	'	'	'	'	'	'
Weighted average duration investment securities portfolio (in years)	'3 years 6 months	'	'	'	'	'	'	'	'	'
Securities transferred from available for sale to held to maturity (at fair value)	$3,001,000,000	$0	$1,994,000,000	$3,001,000,000	'	'	'	'	'	'
Securities transferred from held to maturity to available for sale	'	'	'	'	861,000,000	'	'	'	'	'
Available for sale securities sold security at carrying value	'	'	'	'	3,000,000,000	'	'	'	'	'
Gain on securities portfolio repositioning	0	21,000,000	0	'	'	'	'	'	'	'
Investment securities pledged as collateral	5,600,000,000	5,500,000,000	'	'	'	'	'	'	'	'
Fair value of securities issued, FHLMC	1,600,000,000	'	'	'	'	'	'	'	'	'
Fair value of securities issued, FNMA	2,200,000,000	'	'	'	'	'	'	'	'	'
Fair value of securities issued, GNMA	1,800,000,000	'	'	'	'	'	'	'	'	'
Maximum percentage of our stockholders equity invested in securities of single issuer	10.00%	'	'	'	'	'	'	'	'	'
Investment related to FHLB stock	'	'	'	'	'	231,000,000	140,000,000	24,000,000	102,000,000	121,000,000
Federal Reserve Bank Stock	$136,000,000	$136,000,000	'	'	'	'	'	'	'	'

Loans_and_Leases_Composition_D

Loans and Leases - Composition (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Summary of loans and leases	'	'	'
Loans receivable	$21,440	$19,710	'
Home Equity Portfolio	2,800	2,700	'
Allowance for loan losses	-209	-163	'
Total loans and leases, net	21,230	19,547	'
Total commercial [Member]	'	'	'
Summary of loans and leases	'	'	'
Loans receivable	13,068	12,047	'
Total commercial [Member] \| Commercial real estate [Member]	'	'	'
Summary of loans and leases	'	'	'
Loans receivable	6,914	6,466	'
Total commercial [Member] \| Construction [Member]	'	'	'
Summary of loans and leases	'	'	'
Loans receivable	864	627	'
Total commercial [Member] \| Business [Member]	'	'	'
Summary of loans and leases	'	'	'
Loans receivable	5,290	4,953	'
Total consumer [Member]	'	'	'
Summary of loans and leases	'	'	'
Loans receivable	8,371	7,663	'
Total consumer [Member] \| Residential real estate [Member]	'	'	'
Summary of loans and leases	'	'	'
Loans receivable	3,448	3,762	'
Total consumer [Member] \| Home equity [Member]	'	'	'
Summary of loans and leases	'	'	'
Home Equity Portfolio	2,752	2,652	'
Total consumer [Member] \| Indirect auto [Member]	'	'	'
Summary of loans and leases	'	'	'
Loans receivable	1,544	601	'
Total consumer [Member] \| Credit cards [Member]	'	'	'
Summary of loans and leases	'	'	'
Loans receivable	325	315	'
Total consumer [Member] \| Other consumer [Member]	'	'	'
Summary of loans and leases	'	'	'
Loans receivable	302	334	'
Originated loans [Member]	'	'	'
Summary of loans and leases	'	'	'
Loans receivable	16,922	13,372	9,876
Allowance for loan losses	-205	-161	'
Total loans and leases, net	16,717	13,211	'
Originated loans [Member] \| Total commercial [Member]	'	'	'
Summary of loans and leases	'	'	'
Loans receivable	11,231	9,330	'
Originated loans [Member] \| Total commercial [Member] \| Commercial real estate [Member]	'	'	'
Summary of loans and leases	'	'	'
Loans receivable	5,527	4,491	'
Originated loans [Member] \| Total commercial [Member] \| Construction [Member]	'	'	'
Summary of loans and leases	'	'	'
Loans receivable	828	552	'
Originated loans [Member] \| Total commercial [Member] \| Business [Member]	'	'	'
Summary of loans and leases	'	'	'
Loans receivable	4,876	4,286	2,952
Originated loans [Member] \| Total consumer [Member]	'	'	'
Summary of loans and leases	'	'	'
Loans receivable	5,691	4,042	'
Originated loans [Member] \| Total consumer [Member] \| Residential real estate [Member]	'	'	'
Summary of loans and leases	'	'	'
Loans receivable	1,902	1,724	1,644
Originated loans [Member] \| Total consumer [Member] \| Home equity [Member]	'	'	'
Summary of loans and leases	'	'	'
Loans receivable	1,618	1,286	1,132
Originated loans [Member] \| Total consumer [Member] \| Indirect auto [Member]	'	'	'
Summary of loans and leases	'	'	'
Loans receivable	1,544	601	0
Originated loans [Member] \| Total consumer [Member] \| Credit cards [Member]	'	'	'
Summary of loans and leases	'	'	'
Loans receivable	325	215	'
Originated loans [Member] \| Total consumer [Member] \| Other consumer [Member]	'	'	'
Summary of loans and leases	'	'	'
Loans receivable	302	215	'
Acquired loans [Member]	'	'	'
Summary of loans and leases	'	'	'
Loans receivable	4,517	6,338	6,597
Allowance for loan losses	-4	-2	'
Total loans and leases, net	4,514	6,336	'
Acquired loans [Member] \| Total commercial [Member]	'	'	'
Summary of loans and leases	'	'	'
Loans receivable	1,838	2,716	'
Acquired loans [Member] \| Total commercial [Member] \| Commercial real estate [Member]	'	'	'
Summary of loans and leases	'	'	'
Loans receivable	1,387	1,975	'
Acquired loans [Member] \| Total commercial [Member] \| Construction [Member]	'	'	'
Summary of loans and leases	'	'	'
Loans receivable	36	75	'
Acquired loans [Member] \| Total commercial [Member] \| Business [Member]	'	'	'
Summary of loans and leases	'	'	'
Loans receivable	414	667	820
Acquired loans [Member] \| Total consumer [Member]	'	'	'
Summary of loans and leases	'	'	'
Loans receivable	2,680	3,621	'
Acquired loans [Member] \| Total consumer [Member] \| Residential real estate [Member]	'	'	'
Summary of loans and leases	'	'	'
Loans receivable	1,546	2,037	2,369
Acquired loans [Member] \| Total consumer [Member] \| Home equity [Member]	'	'	'
Summary of loans and leases	'	'	'
Loans receivable	1,134	1,366	1,034
Acquired loans [Member] \| Total consumer [Member] \| Indirect auto [Member]	'	'	'
Summary of loans and leases	'	'	'
Loans receivable	0	0	'
Acquired loans [Member] \| Total consumer [Member] \| Credit cards [Member]	'	'	'
Summary of loans and leases	'	'	'
Loans receivable	0	100	'
Acquired loans [Member] \| Total consumer [Member] \| Other consumer [Member]	'	'	'
Summary of loans and leases	'	'	'
Loans receivable	$0	$118	'

Loans_and_Leases_Acquired_Loan

Loans and Leases - Acquired Loans (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
The outstanding principal balance and the related carrying amount of the acquired loans	'	'
Outstanding principal balance	$4,640	$6,501
Carrying amount	4,517	6,338
Credit impaired acquired loans evaluated individually for future credit losses [Member]	'	'
The outstanding principal balance and the related carrying amount of the acquired loans	'	'
Outstanding principal balance	18	31
Carrying amount	12	24
Credit impaired acquired loans evaluated collectively for future credit losses [Member]	'	'
The outstanding principal balance and the related carrying amount of the acquired loans	'	'
Outstanding principal balance	3,301	4,774
Carrying amount	3,233	4,690
Other acquired loans [Member]	'	'
The outstanding principal balance and the related carrying amount of the acquired loans	'	'
Outstanding principal balance	1,321	1,696
Carrying amount	$1,273	$1,623

Loans_and_Leases_Accretable_Yi

Loans and Leases - Accretable Yield Rollforward (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012
Changes in the accretable discount on loans acquired	'		'
Beginning Balance	($1,057)		($1,187)
HSBC acquisition	'		-91
Net reclassifications from nonaccretable yield	-15		-28
Accretion	199		249
Other changes in accretable yield	22	[1]	'
Ending Balance	($851)		($1,057)

[1]	Includes changes in expected cash flows from changes in interest rate and prepayment assumptions.

Loans_and_Leases_Allowance_for

Loans and Leases - Allowance for Loan Loss Rollforward (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Activity in the allowance for credit losses for the years ended	'	'	'
Total	$21,440	$19,710	'
Total commercial [Member]	'	'	'
Activity in the allowance for credit losses for the years ended	'	'	'
Total	13,068	12,047	'
Total commercial [Member] \| Business [Member]	'	'	'
Activity in the allowance for credit losses for the years ended	'	'	'
Total	5,290	4,953	'
Total consumer [Member]	'	'	'
Activity in the allowance for credit losses for the years ended	'	'	'
Total	8,371	7,663	'
Total consumer [Member] \| Residential real estate [Member]	'	'	'
Activity in the allowance for credit losses for the years ended	'	'	'
Total	3,448	3,762	'
Total consumer [Member] \| Indirect auto [Member]	'	'	'
Activity in the allowance for credit losses for the years ended	'	'	'
Total	1,544	601	'
Originated loans [Member]	'	'	'
Activity in the allowance for credit losses for the years ended	'	'	'
Balance at beginning of year	161	118	95
Provision for loan losses	96	84	51
Charge-offs	-63	-46	-36
Recoveries	11	6	8
Allowance related to loans sold	'	-1	'
Balance at end of year	205	161	118
Allowance for loan losses, individually evaluated for impairment	9	11	7
Allowance for loan losses, collectively evaluated for impairment	196	150	111
Total	205	161	118
Loans receivables, individually evaluated for impairment	163	152	104
Loans receivables, collectively evaluated for impairment	16,759	13,221	9,772
Total	16,922	13,372	9,876
Originated loans [Member] \| Total commercial [Member]	'	'	'
Activity in the allowance for credit losses for the years ended	'	'	'
Total	11,231	9,330	'
Originated loans [Member] \| Total commercial [Member] \| Commercial real estate [Member]	'	'	'
Activity in the allowance for credit losses for the years ended	'	'	'
Balance at beginning of year	38	50	47
Provision for loan losses	17	-7	12
Charge-offs	-10	-7	-12
Recoveries	4	1	3
Allowance related to loans sold	'	0	'
Balance at end of year	48	38	50
Allowance for loan losses, individually evaluated for impairment	4	3	3
Allowance for loan losses, collectively evaluated for impairment	44	35	47
Total	48	38	50
Loans receivables, individually evaluated for impairment	72	67	60
Loans receivables, collectively evaluated for impairment	6,282	4,977	3,921
Total	6,354	5,044	3,981
Originated loans [Member] \| Total commercial [Member] \| Business [Member]	'	'	'
Activity in the allowance for credit losses for the years ended	'	'	'
Balance at beginning of year	99	57	42
Provision for loan losses	48	67	30
Charge-offs	-31	-27	-17
Recoveries	3	2	3
Allowance related to loans sold	'	0	'
Balance at end of year	119	99	57
Allowance for loan losses, individually evaluated for impairment	2	5	2
Allowance for loan losses, collectively evaluated for impairment	117	94	56
Total	119	99	57
Loans receivables, individually evaluated for impairment	59	58	29
Loans receivables, collectively evaluated for impairment	4,818	4,228	2,923
Total	4,876	4,286	2,952
Originated loans [Member] \| Total consumer [Member]	'	'	'
Activity in the allowance for credit losses for the years ended	'	'	'
Total	5,691	4,042	'
Originated loans [Member] \| Total consumer [Member] \| Residential real estate [Member]	'	'	'
Activity in the allowance for credit losses for the years ended	'	'	'
Balance at beginning of year	5	4	2
Provision for loan losses	-1	3	3
Charge-offs	-2	-3	-2
Recoveries	1	0	1
Allowance related to loans sold	'	0	'
Balance at end of year	2	5	4
Allowance for loan losses, individually evaluated for impairment	1	3	2
Allowance for loan losses, collectively evaluated for impairment	1	1	2
Total	2	5	4
Loans receivables, individually evaluated for impairment	20	20	13
Loans receivables, collectively evaluated for impairment	1,882	1,705	1,631
Total	1,902	1,724	1,644
Originated loans [Member] \| Total consumer [Member] \| Home equity [Member]	'	'	'
Activity in the allowance for credit losses for the years ended	'	'	'
Balance at beginning of year	5	4	2
Provision for loan losses	6	4	5
Charge-offs	-3	-4	-2
Recoveries	0	0	0
Allowance related to loans sold	'	0	'
Balance at end of year	7	5	4
Allowance for loan losses, individually evaluated for impairment	3	1	0
Allowance for loan losses, collectively evaluated for impairment	4	4	4
Total	7	5	4
Loans receivables, individually evaluated for impairment	8	5	2
Loans receivables, collectively evaluated for impairment	1,610	1,281	1,131
Total	1,618	1,286	1,132
Originated loans [Member] \| Total consumer [Member] \| Indirect auto [Member]	'	'	'
Activity in the allowance for credit losses for the years ended	'	'	'
Balance at beginning of year	3	0	0
Provision for loan losses	9	4	0
Charge-offs	-3	-1	0
Recoveries	1	0	0
Allowance related to loans sold	'	0	'
Balance at end of year	10	3	0
Allowance for loan losses, individually evaluated for impairment	0	0	0
Allowance for loan losses, collectively evaluated for impairment	10	3	0
Total	10	3	0
Loans receivables, individually evaluated for impairment	1	0	0
Loans receivables, collectively evaluated for impairment	1,543	601	0
Total	1,544	601	0
Originated loans [Member] \| Total consumer [Member] \| Credit Cards [Member]	'	'	'
Activity in the allowance for credit losses for the years ended	'	'	'
Balance at beginning of year	7	0	0
Provision for loan losses	11	8	0
Charge-offs	-6	-1	0
Recoveries	1	0	0
Allowance related to loans sold	'	0	'
Balance at end of year	13	7	0
Allowance for loan losses, individually evaluated for impairment	0	0	0
Allowance for loan losses, collectively evaluated for impairment	13	7	0
Total	13	7	0
Loans receivables, individually evaluated for impairment	0	0	0
Loans receivables, collectively evaluated for impairment	325	215	0
Total	325	215	0
Originated loans [Member] \| Total consumer [Member] \| Other consumer [Member]	'	'	'
Activity in the allowance for credit losses for the years ended	'	'	'
Balance at beginning of year	5	2	3
Provision for loan losses	8	5	1
Charge-offs	-8	-4	-3
Recoveries	2	1	1
Allowance related to loans sold	'	0	'
Balance at end of year	6	5	2
Allowance for loan losses, individually evaluated for impairment	0	0	0
Allowance for loan losses, collectively evaluated for impairment	6	5	2
Total	6	5	2
Loans receivables, individually evaluated for impairment	3	2	0
Loans receivables, collectively evaluated for impairment	299	214	167
Total	302	215	167
Acquired loans [Member]	'	'	'
Activity in the allowance for credit losses for the years ended	'	'	'
Balance at beginning of year	2	2	0
Provision for loan losses	7	7	3
Charge-offs	-5	-9	-1
Recoveries	0	1	0
Balance at end of year	4	2	2
Allowance for loan losses, individually evaluated for impairment	0	0	0
Allowance for loan losses, collectively evaluated for impairment	4	2	2
Total	4	2	2
Loans receivables, individually evaluated for impairment	10	10	0
Loans receivables, collectively evaluated for impairment	1,264	1,614	1,182
Loans acquired with deteriorated credit quality	3,244	4,713	5,415
Total	4,517	6,338	6,597
Acquired loans [Member] \| Total commercial [Member]	'	'	'
Activity in the allowance for credit losses for the years ended	'	'	'
Total	1,838	2,716	'
Acquired loans [Member] \| Total commercial [Member] \| Commercial real estate [Member]	'	'	'
Activity in the allowance for credit losses for the years ended	'	'	'
Balance at beginning of year	0	0	0
Provision for loan losses	4	6	1
Charge-offs	-4	-7	-1
Recoveries	0	1	0
Balance at end of year	0	0	0
Allowance for loan losses, individually evaluated for impairment	0	0	0
Allowance for loan losses, collectively evaluated for impairment	0	0	0
Total	0	0	0
Loans receivables, individually evaluated for impairment	1	1	0
Loans receivables, collectively evaluated for impairment	0	0	0
Loans acquired with deteriorated credit quality	1,423	2,048	2,263
Total	1,423	2,049	2,263
Acquired loans [Member] \| Total commercial [Member] \| Business [Member]	'	'	'
Activity in the allowance for credit losses for the years ended	'	'	'
Balance at beginning of year	0	0	0
Provision for loan losses	0	0	0
Charge-offs	0	0	0
Recoveries	0	0	0
Balance at end of year	0	0	0
Allowance for loan losses, individually evaluated for impairment	0	0	0
Allowance for loan losses, collectively evaluated for impairment	0	0	0
Total	0	0	0
Loans receivables, individually evaluated for impairment	7	7	0
Loans receivables, collectively evaluated for impairment	305	427	531
Loans acquired with deteriorated credit quality	102	233	289
Total	414	667	820
Acquired loans [Member] \| Total consumer [Member]	'	'	'
Activity in the allowance for credit losses for the years ended	'	'	'
Total	2,680	3,621	'
Acquired loans [Member] \| Total consumer [Member] \| Residential real estate [Member]	'	'	'
Activity in the allowance for credit losses for the years ended	'	'	'
Balance at beginning of year	0	0	0
Provision for loan losses	1	0	0
Charge-offs	0	0	0
Recoveries	0	0	0
Balance at end of year	1	0	0
Allowance for loan losses, individually evaluated for impairment	0	0	0
Allowance for loan losses, collectively evaluated for impairment	1	0	0
Total	1	0	0
Loans receivables, individually evaluated for impairment	0	0	0
Loans receivables, collectively evaluated for impairment	0	0	0
Loans acquired with deteriorated credit quality	1,546	2,037	2,369
Total	1,546	2,037	2,369
Acquired loans [Member] \| Total consumer [Member] \| Home equity [Member]	'	'	'
Activity in the allowance for credit losses for the years ended	'	'	'
Balance at beginning of year	0	0	0
Provision for loan losses	3	0	0
Charge-offs	0	0	0
Recoveries	0	0	0
Balance at end of year	3	0	0
Allowance for loan losses, individually evaluated for impairment	0	0	0
Allowance for loan losses, collectively evaluated for impairment	3	0	0
Total	3	0	0
Loans receivables, individually evaluated for impairment	1	2	0
Loans receivables, collectively evaluated for impairment	960	1,045	607
Loans acquired with deteriorated credit quality	173	319	426
Total	1,134	1,366	1,034
Acquired loans [Member] \| Total consumer [Member] \| Indirect auto [Member]	'	'	'
Activity in the allowance for credit losses for the years ended	'	'	'
Total	0	0	'
Acquired loans [Member] \| Total consumer [Member] \| Credit Cards [Member]	'	'	'
Activity in the allowance for credit losses for the years ended	'	'	'
Balance at beginning of year	0	0	0
Provision for loan losses	0	0	0
Charge-offs	0	0	0
Recoveries	0	0	0
Balance at end of year	0	0	0
Allowance for loan losses, individually evaluated for impairment	0	0	0
Allowance for loan losses, collectively evaluated for impairment	0	0	0
Total	0	0	0
Loans receivables, individually evaluated for impairment	0	0	0
Loans receivables, collectively evaluated for impairment	0	100	0
Loans acquired with deteriorated credit quality	0	0	0
Total	0	100	0
Acquired loans [Member] \| Total consumer [Member] \| Other consumer [Member]	'	'	'
Activity in the allowance for credit losses for the years ended	'	'	'
Balance at beginning of year	1	2	0
Provision for loan losses	-1	1	2
Charge-offs	-1	-2	0
Recoveries	0	0	0
Balance at end of year	0	1	2
Allowance for loan losses, individually evaluated for impairment	0	0	0
Allowance for loan losses, collectively evaluated for impairment	0	1	2
Total	0	1	2
Loans receivables, individually evaluated for impairment	0	0	0
Loans receivables, collectively evaluated for impairment	0	42	44
Loans acquired with deteriorated credit quality	0	76	68
Total	$0	$118	$111

Loans_and_Leases_Nonperforming

Loans and Leases - Nonperforming Loans (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Summary of nonaccruing loans	'	'
Nonaccruing loans	$188	$173
Total commercial [Member]	'	'
Summary of nonaccruing loans	'	'
Nonaccruing loans	105	108
Total commercial [Member] \| Commercial real estate [Member]	'	'
Summary of nonaccruing loans	'	'
Nonaccruing loans	54	52
Total commercial [Member] \| Business [Member]	'	'
Summary of nonaccruing loans	'	'
Nonaccruing loans	51	56
Total consumer [Member]	'	'
Summary of nonaccruing loans	'	'
Nonaccruing loans	82	65
Total consumer [Member] \| Residential real estate [Member]	'	'
Summary of nonaccruing loans	'	'
Nonaccruing loans	31	27
Total consumer [Member] \| Home equity [Member]	'	'
Summary of nonaccruing loans	'	'
Nonaccruing loans	39	33
Total consumer [Member] \| Indirect auto [Member]	'	'
Summary of nonaccruing loans	'	'
Nonaccruing loans	6	1
Total consumer [Member] \| Other consumer [Member]	'	'
Summary of nonaccruing loans	'	'
Nonaccruing loans	6	3
Originated loans [Member]	'	'
Summary of nonaccruing loans	'	'
Nonaccruing loans	157	143
Originated loans [Member] \| Total commercial [Member]	'	'
Summary of nonaccruing loans	'	'
Nonaccruing loans	95	98
Originated loans [Member] \| Total commercial [Member] \| Commercial real estate [Member]	'	'
Summary of nonaccruing loans	'	'
Nonaccruing loans	53	51
Originated loans [Member] \| Total commercial [Member] \| Business [Member]	'	'
Summary of nonaccruing loans	'	'
Nonaccruing loans	42	47
Originated loans [Member] \| Total consumer [Member]	'	'
Summary of nonaccruing loans	'	'
Nonaccruing loans	62	45
Originated loans [Member] \| Total consumer [Member] \| Residential real estate [Member]	'	'
Summary of nonaccruing loans	'	'
Nonaccruing loans	31	27
Originated loans [Member] \| Total consumer [Member] \| Home equity [Member]	'	'
Summary of nonaccruing loans	'	'
Nonaccruing loans	18	14
Originated loans [Member] \| Total consumer [Member] \| Indirect auto [Member]	'	'
Summary of nonaccruing loans	'	'
Nonaccruing loans	6	1
Originated loans [Member] \| Total consumer [Member] \| Other consumer [Member]	'	'
Summary of nonaccruing loans	'	'
Nonaccruing loans	6	3
Acquired loans [Member]	'	'
Summary of nonaccruing loans	'	'
Nonaccruing loans	30	30
Acquired loans [Member] \| Total commercial [Member]	'	'
Summary of nonaccruing loans	'	'
Nonaccruing loans	10	10
Acquired loans [Member] \| Total commercial [Member] \| Commercial real estate [Member]	'	'
Summary of nonaccruing loans	'	'
Nonaccruing loans	1	1
Acquired loans [Member] \| Total commercial [Member] \| Business [Member]	'	'
Summary of nonaccruing loans	'	'
Nonaccruing loans	9	9
Acquired loans [Member] \| Total consumer [Member]	'	'
Summary of nonaccruing loans	'	'
Nonaccruing loans	20	20
Acquired loans [Member] \| Total consumer [Member] \| Residential real estate [Member]	'	'
Summary of nonaccruing loans	'	'
Nonaccruing loans	0	0
Acquired loans [Member] \| Total consumer [Member] \| Home equity [Member]	'	'
Summary of nonaccruing loans	'	'
Nonaccruing loans	20	19
Acquired loans [Member] \| Total consumer [Member] \| Indirect auto [Member]	'	'
Summary of nonaccruing loans	'	'
Nonaccruing loans	0	0
Acquired loans [Member] \| Total consumer [Member] \| Other consumer [Member]	'	'
Summary of nonaccruing loans	'	'
Nonaccruing loans	$0	$0

Loans_and_Leases_Interest_Inco

Loans and Leases - Interest Income Foregone (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Details of additional information on loans	'	'	'
Additional interest income that would have been recorded if nonperforming loans had performed in accordance with original terms	$7	$7	$6

Loans_and_Leases_Impaired_Loan

Loans and Leases - Impaired Loans (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Summary of impaired loans	'		'		'
Recorded investment	$172	[1]	$162	[1]	'
Total commercial [Member]	'		'		'
Summary of impaired loans	'		'		'
Recorded investment	139	[1]	133	[1]	'
Total commercial [Member] \| With no related allowance recorded	'		'		'
Summary of impaired loans	'		'		'
Recorded investment	103		76		'
Unpaid principal balance	146		112		'
Related allowance	0		0		'
Total commercial [Member] \| With a related allowance recorded	'		'		'
Summary of impaired loans	'		'		'
Recorded investment	28		48		'
Unpaid principal balance	41		68		'
Related allowance	5		7		'
Total consumer [Member]	'		'		'
Summary of impaired loans	'		'		'
Recorded investment	33	[1]	29	[1]	'
Total consumer [Member] \| With no related allowance recorded	'		'		'
Summary of impaired loans	'		'		'
Recorded investment	18		11		'
Unpaid principal balance	20		12		'
Related allowance	0		0		'
Total consumer [Member] \| With a related allowance recorded	'		'		'
Summary of impaired loans	'		'		'
Recorded investment	14		16		'
Unpaid principal balance	16		17		'
Related allowance	4		4		'
Originated loans [Member]	'		'		'
Summary of impaired loans	'		'		'
Recorded investment	163		152		'
Unpaid principal balance	222		209		'
Related allowance	9		11		'
Average recorded investment	172		161		88
Interest income recognized	3		3		5
Originated loans [Member] \| With no related allowance recorded	'		'		'
Summary of impaired loans	'		'		'
Recorded investment	121		87		'
Unpaid principal balance	166		124		'
Related allowance	0		0		'
Originated loans [Member] \| With a related allowance recorded	'		'		'
Summary of impaired loans	'		'		'
Recorded investment	42		64		'
Unpaid principal balance	57		85		'
Related allowance	9		11		'
Originated loans [Member] \| Total commercial [Member]	'		'		'
Summary of impaired loans	'		'		'
Recorded investment	131		125		'
Unpaid principal balance	187		181		'
Related allowance	5		7		'
Average recorded investment	142		135		75
Interest income recognized	2		2		5
Originated loans [Member] \| Total commercial [Member] \| Commercial real estate [Member]	'		'		'
Summary of impaired loans	'		'		'
Recorded investment	72		67		'
Unpaid principal balance	97		92		'
Related allowance	4		3		'
Average recorded investment	80		72		51
Interest income recognized	1		1		3
Originated loans [Member] \| Total commercial [Member] \| Commercial real estate [Member] \| With no related allowance recorded	'		'		'
Summary of impaired loans	'		'		'
Recorded investment	48		42		'
Unpaid principal balance	63		55		'
Related allowance	0		0		'
Originated loans [Member] \| Total commercial [Member] \| Commercial real estate [Member] \| With a related allowance recorded	'		'		'
Summary of impaired loans	'		'		'
Recorded investment	24		25		'
Unpaid principal balance	35		37		'
Related allowance	4		3		'
Originated loans [Member] \| Total commercial [Member] \| Business [Member]	'		'		'
Summary of impaired loans	'		'		'
Recorded investment	59		58		'
Unpaid principal balance	90		89		'
Related allowance	2		5		'
Average recorded investment	63		63		24
Interest income recognized	1		1		2
Originated loans [Member] \| Total commercial [Member] \| Business [Member] \| With no related allowance recorded	'		'		'
Summary of impaired loans	'		'		'
Recorded investment	55		34		'
Unpaid principal balance	84		57		'
Related allowance	0		0		'
Originated loans [Member] \| Total commercial [Member] \| Business [Member] \| With a related allowance recorded	'		'		'
Summary of impaired loans	'		'		'
Recorded investment	4		24		'
Unpaid principal balance	6		31		'
Related allowance	2		5		'
Originated loans [Member] \| Total consumer [Member]	'		'		'
Summary of impaired loans	'		'		'
Recorded investment	32		27		'
Unpaid principal balance	36		28		'
Related allowance	4		4		'
Average recorded investment	29		26		14
Interest income recognized	1		0		1
Originated loans [Member] \| Total consumer [Member] \| Residential real estate [Member]	'		'		'
Summary of impaired loans	'		'		'
Recorded investment	20		20		'
Unpaid principal balance	21		20		'
Related allowance	1		3		'
Average recorded investment	20		20		13
Interest income recognized	0		0		1
Originated loans [Member] \| Total consumer [Member] \| Residential real estate [Member] \| With no related allowance recorded	'		'		'
Summary of impaired loans	'		'		'
Recorded investment	12		6		'
Unpaid principal balance	12		6		'
Related allowance	0		0		'
Originated loans [Member] \| Total consumer [Member] \| Residential real estate [Member] \| With a related allowance recorded	'		'		'
Summary of impaired loans	'		'		'
Recorded investment	8		13		'
Unpaid principal balance	9		14		'
Related allowance	1		3		'
Originated loans [Member] \| Total consumer [Member] \| Home equity [Member]	'		'		'
Summary of impaired loans	'		'		'
Recorded investment	8		5		'
Unpaid principal balance	10		6		'
Related allowance	3		1		'
Average recorded investment	5		4		1
Interest income recognized	0		0		0
Originated loans [Member] \| Total consumer [Member] \| Home equity [Member] \| With no related allowance recorded	'		'		'
Summary of impaired loans	'		'		'
Recorded investment	4		3		'
Unpaid principal balance	5		3		'
Related allowance	0		0		'
Originated loans [Member] \| Total consumer [Member] \| Home equity [Member] \| With a related allowance recorded	'		'		'
Summary of impaired loans	'		'		'
Recorded investment	4		2		'
Unpaid principal balance	5		3		'
Related allowance	3		1		'
Originated loans [Member] \| Total consumer [Member] \| Indirect auto [Member]	'		'		'
Summary of impaired loans	'		'		'
Recorded investment	1		0		'
Unpaid principal balance	2		0		'
Related allowance	0		0		'
Average recorded investment	1		0		0
Interest income recognized	0		0		0
Originated loans [Member] \| Total consumer [Member] \| Indirect auto [Member] \| With no related allowance recorded	'		'		'
Summary of impaired loans	'		'		'
Recorded investment	1		0		'
Unpaid principal balance	1		0		'
Related allowance	0		0		'
Originated loans [Member] \| Total consumer [Member] \| Indirect auto [Member] \| With a related allowance recorded	'		'		'
Summary of impaired loans	'		'		'
Recorded investment	1		0		'
Unpaid principal balance	1		0		'
Related allowance	0		0		'
Originated loans [Member] \| Total consumer [Member] \| Other consumer [Member]	'		'		'
Summary of impaired loans	'		'		'
Recorded investment	3		2		'
Unpaid principal balance	3		2		'
Related allowance	0		0		'
Average recorded investment	3		2		0
Interest income recognized	0		0		0
Originated loans [Member] \| Total consumer [Member] \| Other consumer [Member] \| With no related allowance recorded	'		'		'
Summary of impaired loans	'		'		'
Recorded investment	1		2		'
Unpaid principal balance	1		2		'
Related allowance	0		0		'
Originated loans [Member] \| Total consumer [Member] \| Other consumer [Member] \| With a related allowance recorded	'		'		'
Summary of impaired loans	'		'		'
Recorded investment	1		0		'
Unpaid principal balance	1		0		'
Related allowance	0		0		'
Acquired loans [Member]	'		'		'
Summary of impaired loans	'		'		'
Average recorded investment	9	[2]	10	[2]	'
Interest income recognized	0	[2]	0	[2]	'
Acquired loans [Member] \| With no related allowance recorded	'		'		'
Summary of impaired loans	'		'		'
Recorded investment	10	[2]	10	[2]	'
Unpaid principal balance	14	[2]	16	[2]	'
Related allowance	0	[2]	0	[2]	'
Acquired loans [Member] \| Total commercial [Member]	'		'		'
Summary of impaired loans	'		'		'
Average recorded investment	8		9		'
Interest income recognized	0		0		'
Acquired loans [Member] \| Total commercial [Member] \| With no related allowance recorded	'		'		'
Summary of impaired loans	'		'		'
Recorded investment	8		8		'
Unpaid principal balance	12		12		'
Related allowance	0		0		'
Acquired loans [Member] \| Total commercial [Member] \| Commercial real estate [Member]	'		'		'
Summary of impaired loans	'		'		'
Average recorded investment	1		1		'
Interest income recognized	0		0		'
Acquired loans [Member] \| Total commercial [Member] \| Commercial real estate [Member] \| With no related allowance recorded	'		'		'
Summary of impaired loans	'		'		'
Recorded investment	1		1		'
Unpaid principal balance	4		5		'
Related allowance	0		0		'
Acquired loans [Member] \| Total commercial [Member] \| Business [Member]	'		'		'
Summary of impaired loans	'		'		'
Average recorded investment	7		8		'
Interest income recognized	0		0		'
Acquired loans [Member] \| Total commercial [Member] \| Business [Member] \| With no related allowance recorded	'		'		'
Summary of impaired loans	'		'		'
Recorded investment	7		7		'
Unpaid principal balance	8		7		'
Related allowance	0		0		'
Acquired loans [Member] \| Total consumer [Member]	'		'		'
Summary of impaired loans	'		'		'
Average recorded investment	0		1		'
Interest income recognized	0		0		'
Acquired loans [Member] \| Total consumer [Member] \| With no related allowance recorded	'		'		'
Summary of impaired loans	'		'		'
Recorded investment	1		2		'
Unpaid principal balance	2		3		'
Related allowance	0		0		'
Acquired loans [Member] \| Total consumer [Member] \| Residential real estate [Member]	'		'		'
Summary of impaired loans	'		'		'
Average recorded investment	0		0		'
Interest income recognized	0		0		'
Acquired loans [Member] \| Total consumer [Member] \| Residential real estate [Member] \| With no related allowance recorded	'		'		'
Summary of impaired loans	'		'		'
Recorded investment	0		0		'
Unpaid principal balance	0		0		'
Related allowance	0		0		'
Acquired loans [Member] \| Total consumer [Member] \| Home equity [Member]	'		'		'
Summary of impaired loans	'		'		'
Average recorded investment	0		1		'
Interest income recognized	0		0		'
Acquired loans [Member] \| Total consumer [Member] \| Home equity [Member] \| With no related allowance recorded	'		'		'
Summary of impaired loans	'		'		'
Recorded investment	1		2		'
Unpaid principal balance	2		3		'
Related allowance	0		0		'
Acquired loans [Member] \| Total consumer [Member] \| Other consumer [Member]	'		'		'
Summary of impaired loans	'		'		'
Average recorded investment	0		0		'
Interest income recognized	0		0		'
Acquired loans [Member] \| Total consumer [Member] \| Other consumer [Member] \| With no related allowance recorded	'		'		'
Summary of impaired loans	'		'		'
Recorded investment	0		0		'
Unpaid principal balance	0		0		'
Related allowance	$0		$0		'

[1]	Included nonaccrual purchased credit impaired loans.
[2]	Includes nonaccrual purchased credit impaired loans.

Loans_and_Leases_Reconciliatio

Loans and Leases - Reconciliation of Nonperforming Loans to Impaired Loans (Details) (USD $)	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
In Millions, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Accounts, Notes, Loans and Financing Receivable [Line Items]	'		'		'
Nonaccruing loans	$188		$173		'
Plus: Accruing TDRs	52		46		44
Less : Smaller balance nonaccrual loans evaluated collectively when determining the allowance for loan losses	-67		-57		'
Total impaired loans	172	[1]	162	[1]	'
Total commercial [Member]	'		'		'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'		'		'
Nonaccruing loans	105		108		'
Plus: Accruing TDRs	45		36		'
Less : Smaller balance nonaccrual loans evaluated collectively when determining the allowance for loan losses	-11		-12		'
Total impaired loans	139	[1]	133	[1]	'
Total consumer [Member]	'		'		'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'		'		'
Nonaccruing loans	82		65		'
Plus: Accruing TDRs	8		10		'
Less : Smaller balance nonaccrual loans evaluated collectively when determining the allowance for loan losses	-57		-45		'
Total impaired loans	$33	[1]	$29	[1]	'

[1]	Included nonaccrual purchased credit impaired loans.

Loans_and_Leases_Past_Due_Agin

Loans and Leases - Past Due Aging Analysis (Details) (USD $)	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
In Millions, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Aging analysis of loans	'		'		'
Total	$21,440		$19,710		'
Greater than 90 days and accruing	0		0		'
Total commercial [Member]	'		'		'
Aging analysis of loans	'		'		'
Total	13,068		12,047		'
Total commercial [Member] \| Business [Member]	'		'		'
Aging analysis of loans	'		'		'
Total	5,290		4,953		'
Total consumer [Member]	'		'		'
Aging analysis of loans	'		'		'
Total	8,371		7,663		'
Total consumer [Member] \| Residential real estate [Member]	'		'		'
Aging analysis of loans	'		'		'
Total	3,448		3,762		'
Total consumer [Member] \| Indirect auto [Member]	'		'		'
Aging analysis of loans	'		'		'
Total	1,544		601		'
Originated loans [Member]	'		'		'
Aging analysis of loans	'		'		'
30-59 days past due	36		26		'
60-89 days past due	15		13		'
Greater than 90 days past due	90		90		'
Total past due	140		129		'
Current	16,782		13,244		'
Total	16,922		13,372		9,876
Greater than 90 days and accruing	3	[1]	5	[1]	'
Originated loans [Member] \| Total commercial [Member]	'		'		'
Aging analysis of loans	'		'		'
30-59 days past due	9		10		'
60-89 days past due	5		7		'
Greater than 90 days past due	47		60		'
Total past due	61		77		'
Current	11,169		9,253		'
Total	11,231		9,330		'
Greater than 90 days and accruing	0	[1]	4	[1]	'
Originated loans [Member] \| Total commercial [Member] \| Commercial real estate [Member]	'		'		'
Aging analysis of loans	'		'		'
30-59 days past due	5		4		'
60-89 days past due	2		3		'
Greater than 90 days past due	27		40		'
Total past due	34		47		'
Current	6,321		4,996		'
Total	6,354		5,044		3,981
Greater than 90 days and accruing	0	[1]	4	[1]	'
Originated loans [Member] \| Total commercial [Member] \| Business [Member]	'		'		'
Aging analysis of loans	'		'		'
30-59 days past due	4		5		'
60-89 days past due	3		5		'
Greater than 90 days past due	20		19		'
Total past due	28		29		'
Current	4,849		4,257		'
Total	4,876		4,286		2,952
Greater than 90 days and accruing	0	[1]	0	[1]	'
Originated loans [Member] \| Total consumer [Member]	'		'		'
Aging analysis of loans	'		'		'
30-59 days past due	27		17		'
60-89 days past due	9		5		'
Greater than 90 days past due	43		30		'
Total past due	79		52		'
Current	5,613		3,990		'
Total	5,691		4,042		'
Greater than 90 days and accruing	3	[1]	0	[1]	'
Originated loans [Member] \| Total consumer [Member] \| Residential real estate [Member]	'		'		'
Aging analysis of loans	'		'		'
30-59 days past due	6		8		'
60-89 days past due	2		2		'
Greater than 90 days past due	21		19		'
Total past due	30		29		'
Current	1,872		1,695		'
Total	1,902		1,724		1,644
Greater than 90 days and accruing	0	[1]	0	[1]	'
Originated loans [Member] \| Total consumer [Member] \| Home equity [Member]	'		'		'
Aging analysis of loans	'		'		'
30-59 days past due	3		3		'
60-89 days past due	2		2		'
Greater than 90 days past due	12		9		'
Total past due	17		13		'
Current	1,601		1,273		'
Total	1,618		1,286		1,132
Greater than 90 days and accruing	0	[1]	0	[1]	'
Originated loans [Member] \| Total consumer [Member] \| Indirect auto [Member]	'		'		'
Aging analysis of loans	'		'		'
30-59 days past due	12		4		'
60-89 days past due	2		0		'
Greater than 90 days past due	3		0		'
Total past due	18		5		'
Current	1,526		596		'
Total	1,544		601		0
Greater than 90 days and accruing	0	[1]	0	[1]	'
Originated loans [Member] \| Total consumer [Member] \| Credit Cards [Member]	'		'		'
Aging analysis of loans	'		'		'
30-59 days past due	2		0		'
60-89 days past due	1		0		'
Greater than 90 days past due	3		0		'
Total past due	6		1		'
Current	319		214		'
Total	325		215		0
Greater than 90 days and accruing	3	[1]	0	[1]	'
Originated loans [Member] \| Total consumer [Member] \| Other consumer [Member]	'		'		'
Aging analysis of loans	'		'		'
30-59 days past due	3		2		'
60-89 days past due	1		1		'
Greater than 90 days past due	3		1		'
Total past due	7		4		'
Current	295		212		'
Total	302		215		167
Greater than 90 days and accruing	0	[1]	0	[1]	'
Acquired loans [Member]	'		'		'
Aging analysis of loans	'		'		'
30-59 days past due	35		55		'
60-89 days past due	23		40		'
Greater than 90 days past due	130		189		'
Total past due	188		284		'
Current	4,330		6,053		'
Total	4,517		6,338		6,597
Greater than 90 days and accruing	110	[1]	167	[1]	'
Acquired loans [Member] \| Total commercial [Member]	'		'		'
Aging analysis of loans	'		'		'
30-59 days past due	10		16		'
60-89 days past due	8		20		'
Greater than 90 days past due	45		93		'
Total past due	63		129		'
Current	1,774		2,587		'
Total	1,838		2,716		'
Greater than 90 days and accruing	41	[1]	85	[1]	'
Acquired loans [Member] \| Total commercial [Member] \| Commercial real estate [Member]	'		'		'
Aging analysis of loans	'		'		'
30-59 days past due	8		11		'
60-89 days past due	8		18		'
Greater than 90 days past due	37		80		'
Total past due	52		109		'
Current	1,371		1,940		'
Total	1,423		2,049		2,263
Greater than 90 days and accruing	36	[1]	79	[1]	'
Acquired loans [Member] \| Total commercial [Member] \| Business [Member]	'		'		'
Aging analysis of loans	'		'		'
30-59 days past due	2		6		'
60-89 days past due	1		2		'
Greater than 90 days past due	8		13		'
Total past due	11		20		'
Current	403		647		'
Total	414		667		820
Greater than 90 days and accruing	5	[1]	6	[1]	'
Acquired loans [Member] \| Total consumer [Member]	'		'		'
Aging analysis of loans	'		'		'
30-59 days past due	26		39		'
60-89 days past due	15		20		'
Greater than 90 days past due	84		96		'
Total past due	125		155		'
Current	2,555		3,466		'
Total	2,680		3,621		'
Greater than 90 days and accruing	70	[1]	82	[1]	'
Acquired loans [Member] \| Total consumer [Member] \| Residential real estate [Member]	'		'		'
Aging analysis of loans	'		'		'
30-59 days past due	19		24		'
60-89 days past due	11		12		'
Greater than 90 days past due	64		69		'
Total past due	94		105		'
Current	1,452		1,932		'
Total	1,546		2,037		2,369
Greater than 90 days and accruing	64	[1]	69	[1]	'
Acquired loans [Member] \| Total consumer [Member] \| Home equity [Member]	'		'		'
Aging analysis of loans	'		'		'
30-59 days past due	7		10		'
60-89 days past due	4		5		'
Greater than 90 days past due	20		21		'
Total past due	31		36		'
Current	1,103		1,329		'
Total	1,134		1,366		1,034
Greater than 90 days and accruing	5	[1]	7	[1]	'
Acquired loans [Member] \| Total consumer [Member] \| Indirect auto [Member]	'		'		'
Aging analysis of loans	'		'		'
Total	0		0		'
Acquired loans [Member] \| Total consumer [Member] \| Credit Cards [Member]	'		'		'
Aging analysis of loans	'		'		'
30-59 days past due	'		3		'
60-89 days past due	'		2		'
Greater than 90 days past due	'		4		'
Total past due	'		8		'
Current	'		92		'
Total	0		100		0
Greater than 90 days and accruing	'		4	[1]	'
Acquired loans [Member] \| Total consumer [Member] \| Other consumer [Member]	'		'		'
Aging analysis of loans	'		'		'
30-59 days past due	'		2		'
60-89 days past due	'		1		'
Greater than 90 days past due	'		2		'
Total past due	'		5		'
Current	'		113		'
Total	0		118		111
Greater than 90 days and accruing	'		$2	[1]	'

[1]	Includes credit card loans, loans that have matured and are in the process of collection, and acquired loans that were originally recorded at fair value upon acquisition. Acquired loans are considered to be accruing as we can reasonably estimate future cash flows on these acquired loans and we expect to fully collect the carrying value of these loans net of the allowance for acquired loan losses. Therefore, we are accreting the difference between the carrying value of these loans and their expected cash flows into interest income.

Loans_and_Leases_Commercial_Cr

Loans and Leases - Commercial Credit Quality Indicators (Details) (USD $)	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
In Millions, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Information about the credit quality of our commercial loan portfolio	'		'		'
Loans receivable	$21,440		$19,710		'
Total commercial [Member]	'		'		'
Information about the credit quality of our commercial loan portfolio	'		'		'
Loans receivable	13,068		12,047		'
Total commercial [Member] \| Business [Member]	'		'		'
Information about the credit quality of our commercial loan portfolio	'		'		'
Loans receivable	5,290		4,953		'
Originated Loans	'		'		'
Information about the credit quality of our commercial loan portfolio	'		'		'
Loans receivable	16,922		13,372		9,876
Originated Loans \| Total commercial [Member]	'		'		'
Information about the credit quality of our commercial loan portfolio	'		'		'
Loans receivable	11,231		9,330		'
Percent of total	100.00%		100.00%		'
Originated Loans \| Total commercial [Member] \| Criticized [Member]	'		'		'
Information about the credit quality of our commercial loan portfolio	'		'		'
Loans receivable	612	[1]	515	[1]	'
Percent of total	5.40%	[1]	5.50%	[1]	'
Originated Loans \| Total commercial [Member] \| Criticized [Member] \| Accrual	'		'		'
Information about the credit quality of our commercial loan portfolio	'		'		'
Loans receivable	517	[1]	417	[1]	'
Percent of total	4.60%	[1]	4.50%	[1]	'
Originated Loans \| Total commercial [Member] \| Criticized [Member] \| Nonaccrual	'		'		'
Information about the credit quality of our commercial loan portfolio	'		'		'
Loans receivable	95	[1]	98	[1]	'
Percent of total	0.80%	[1]	1.00%	[1]	'
Originated Loans \| Total commercial [Member] \| Pass [Member]	'		'		'
Information about the credit quality of our commercial loan portfolio	'		'		'
Loans receivable	10,618		8,815		'
Percent of total	94.60%		94.50%		'
Originated Loans \| Total commercial [Member] \| Business [Member]	'		'		'
Information about the credit quality of our commercial loan portfolio	'		'		'
Loans receivable	4,876		4,286		2,952
Originated Loans \| Total commercial [Member] \| Business [Member] \| Criticized [Member]	'		'		'
Information about the credit quality of our commercial loan portfolio	'		'		'
Loans receivable	286	[1]	217	[1]	'
Originated Loans \| Total commercial [Member] \| Business [Member] \| Criticized [Member] \| Accrual	'		'		'
Information about the credit quality of our commercial loan portfolio	'		'		'
Loans receivable	244	[1]	170	[1]	'
Originated Loans \| Total commercial [Member] \| Business [Member] \| Criticized [Member] \| Nonaccrual	'		'		'
Information about the credit quality of our commercial loan portfolio	'		'		'
Loans receivable	42	[1]	47	[1]	'
Originated Loans \| Total commercial [Member] \| Business [Member] \| Pass [Member]	'		'		'
Information about the credit quality of our commercial loan portfolio	'		'		'
Loans receivable	4,590		4,069		'
Originated Loans \| Total commercial [Member] \| Commercial real estate [Member]	'		'		'
Information about the credit quality of our commercial loan portfolio	'		'		'
Loans receivable	6,354		5,044		3,981
Originated Loans \| Total commercial [Member] \| Commercial real estate [Member] \| Criticized [Member]	'		'		'
Information about the credit quality of our commercial loan portfolio	'		'		'
Loans receivable	327	[1]	298	[1]	'
Originated Loans \| Total commercial [Member] \| Commercial real estate [Member] \| Criticized [Member] \| Accrual	'		'		'
Information about the credit quality of our commercial loan portfolio	'		'		'
Loans receivable	273	[1]	247	[1]	'
Originated Loans \| Total commercial [Member] \| Commercial real estate [Member] \| Criticized [Member] \| Nonaccrual	'		'		'
Information about the credit quality of our commercial loan portfolio	'		'		'
Loans receivable	53	[1]	51	[1]	'
Originated Loans \| Total commercial [Member] \| Commercial real estate [Member] \| Pass [Member]	'		'		'
Information about the credit quality of our commercial loan portfolio	'		'		'
Loans receivable	6,028		4,746		'
Acquired loans [Member]	'		'		'
Information about the credit quality of our commercial loan portfolio	'		'		'
Loans receivable	4,517		6,338		6,597
Acquired loans [Member] \| Total commercial [Member]	'		'		'
Information about the credit quality of our commercial loan portfolio	'		'		'
Loans receivable	1,838		2,716		'
Percent of total	100.00%		100.00%		'
Acquired loans [Member] \| Total commercial [Member] \| Criticized [Member]	'		'		'
Information about the credit quality of our commercial loan portfolio	'		'		'
Loans receivable	218	[1]	341	[1]	'
Percent of total	11.80%	[1]	12.60%	[1]	'
Acquired loans [Member] \| Total commercial [Member] \| Criticized [Member] \| Accrual	'		'		'
Information about the credit quality of our commercial loan portfolio	'		'		'
Loans receivable	208	[1]	331	[1]	'
Percent of total	11.30%	[1]	12.20%	[1]	'
Acquired loans [Member] \| Total commercial [Member] \| Criticized [Member] \| Nonaccrual	'		'		'
Information about the credit quality of our commercial loan portfolio	'		'		'
Loans receivable	10	[1]	10	[1]	'
Percent of total	0.50%	[1]	0.40%	[1]	'
Acquired loans [Member] \| Total commercial [Member] \| Pass [Member]	'		'		'
Information about the credit quality of our commercial loan portfolio	'		'		'
Loans receivable	1,619		2,376		'
Percent of total	88.20%		87.40%		'
Acquired loans [Member] \| Total commercial [Member] \| Business [Member]	'		'		'
Information about the credit quality of our commercial loan portfolio	'		'		'
Loans receivable	414		667		820
Acquired loans [Member] \| Total commercial [Member] \| Business [Member] \| Criticized [Member]	'		'		'
Information about the credit quality of our commercial loan portfolio	'		'		'
Loans receivable	55	[1]	85	[1]	'
Acquired loans [Member] \| Total commercial [Member] \| Business [Member] \| Criticized [Member] \| Accrual	'		'		'
Information about the credit quality of our commercial loan portfolio	'		'		'
Loans receivable	46	[1]	77	[1]	'
Acquired loans [Member] \| Total commercial [Member] \| Business [Member] \| Criticized [Member] \| Nonaccrual	'		'		'
Information about the credit quality of our commercial loan portfolio	'		'		'
Loans receivable	9	[1]	9	[1]	'
Acquired loans [Member] \| Total commercial [Member] \| Business [Member] \| Pass [Member]	'		'		'
Information about the credit quality of our commercial loan portfolio	'		'		'
Loans receivable	359		582		'
Acquired loans [Member] \| Total commercial [Member] \| Commercial real estate [Member]	'		'		'
Information about the credit quality of our commercial loan portfolio	'		'		'
Loans receivable	1,423		2,049		2,263
Acquired loans [Member] \| Total commercial [Member] \| Commercial real estate [Member] \| Criticized [Member]	'		'		'
Information about the credit quality of our commercial loan portfolio	'		'		'
Loans receivable	163	[1]	255	[1]	'
Acquired loans [Member] \| Total commercial [Member] \| Commercial real estate [Member] \| Criticized [Member] \| Accrual	'		'		'
Information about the credit quality of our commercial loan portfolio	'		'		'
Loans receivable	162	[1]	254	[1]	'
Acquired loans [Member] \| Total commercial [Member] \| Commercial real estate [Member] \| Criticized [Member] \| Nonaccrual	'		'		'
Information about the credit quality of our commercial loan portfolio	'		'		'
Loans receivable	1	[1]	1	[1]	'
Acquired loans [Member] \| Total commercial [Member] \| Commercial real estate [Member] \| Pass [Member]	'		'		'
Information about the credit quality of our commercial loan portfolio	'		'		'
Loans receivable	$1,260		$1,794		'

[1]	Includes special mention, substandard, doubtful, and loss, which are consistent with regulatory definitions, and as described in PartÂ I, ItemÂ 1, â€œBusiness,â€ under the heading â€œAsset Quality Review.â€

Loans_and_Leases_Consumer_Cred

Loans and Leases - Consumer Credit Quality Indicators - Refreshed FICO (Details) (USD $)	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
In Millions, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	$21,440		$19,710		'
Originated loans [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	16,922		13,372		9,876
Acquired loans [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	4,517		6,338		6,597
Total consumer [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	8,371		7,663		'
Total consumer [Member] \| Residential real estate [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	3,448		3,762		'
Total consumer [Member] \| Indirect auto [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	1,544		601		'
Total consumer [Member] \| Originated loans [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	5,691		4,042		'
Percent of total	100.00%		100.00%		'
Total consumer [Member] \| Originated loans [Member] \| Over 700 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	4,324		2,981		'
Percent of total	76.00%		73.70%		'
Total consumer [Member] \| Originated loans [Member] \| 660 - 700 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	696		548		'
Percent of total	12.20%		13.60%		'
Total consumer [Member] \| Originated loans [Member] \| 620-660 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	328		249		'
Percent of total	5.80%		6.20%		'
Total consumer [Member] \| Originated loans [Member] \| 580 - 620 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	142		113		'
Percent of total	2.50%		2.80%		'
Total consumer [Member] \| Originated loans [Member] \| Less than 580 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	135		131		'
Percent of total	2.40%		3.20%		'
Total consumer [Member] \| Originated loans [Member] \| No Score [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	66	[1]	20	[1]	'
Percent of total	1.10%	[1]	0.50%	[1]	'
Total consumer [Member] \| Originated loans [Member] \| Residential real estate [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	1,902		1,724		1,644
Total consumer [Member] \| Originated loans [Member] \| Residential real estate [Member] \| Over 700 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	1,609		1,382		'
Total consumer [Member] \| Originated loans [Member] \| Residential real estate [Member] \| 660 - 700 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	128		167		'
Total consumer [Member] \| Originated loans [Member] \| Residential real estate [Member] \| 620-660 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	56		68		'
Total consumer [Member] \| Originated loans [Member] \| Residential real estate [Member] \| 580 - 620 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	32		39		'
Total consumer [Member] \| Originated loans [Member] \| Residential real estate [Member] \| Less than 580 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	38		58		'
Total consumer [Member] \| Originated loans [Member] \| Residential real estate [Member] \| No Score [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	39	[1]	12	[1]	'
Total consumer [Member] \| Originated loans [Member] \| Home equity [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	1,618		1,286		1,132
Total consumer [Member] \| Originated loans [Member] \| Home equity [Member] \| Over 700 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	1,327		1,010		'
Total consumer [Member] \| Originated loans [Member] \| Home equity [Member] \| 660 - 700 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	158		149		'
Total consumer [Member] \| Originated loans [Member] \| Home equity [Member] \| 620-660 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	69		59		'
Total consumer [Member] \| Originated loans [Member] \| Home equity [Member] \| 580 - 620 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	30		28		'
Total consumer [Member] \| Originated loans [Member] \| Home equity [Member] \| Less than 580 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	30		36		'
Total consumer [Member] \| Originated loans [Member] \| Home equity [Member] \| No Score [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	3	[1]	4	[1]	'
Total consumer [Member] \| Originated loans [Member] \| Indirect auto [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	1,544		601		0
Total consumer [Member] \| Originated loans [Member] \| Indirect auto [Member] \| Over 700 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	993		335		'
Total consumer [Member] \| Originated loans [Member] \| Indirect auto [Member] \| 660 - 700 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	304		146		'
Total consumer [Member] \| Originated loans [Member] \| Indirect auto [Member] \| 620-660 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	149		76		'
Total consumer [Member] \| Originated loans [Member] \| Indirect auto [Member] \| 580 - 620 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	55		27		'
Total consumer [Member] \| Originated loans [Member] \| Indirect auto [Member] \| Less than 580 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	43		16		'
Total consumer [Member] \| Originated loans [Member] \| Indirect auto [Member] \| No Score [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	0	[1]	1	[1]	'
Total consumer [Member] \| Originated loans [Member] \| Credit Cards [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	325		215		0
Total consumer [Member] \| Originated loans [Member] \| Credit Cards [Member] \| Over 700 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	223		137		'
Total consumer [Member] \| Originated loans [Member] \| Credit Cards [Member] \| 660 - 700 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	53		37		'
Total consumer [Member] \| Originated loans [Member] \| Credit Cards [Member] \| 620-660 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	25		18		'
Total consumer [Member] \| Originated loans [Member] \| Credit Cards [Member] \| 580 - 620 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	12		9		'
Total consumer [Member] \| Originated loans [Member] \| Credit Cards [Member] \| Less than 580 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	8		11		'
Total consumer [Member] \| Originated loans [Member] \| Credit Cards [Member] \| No Score [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	4	[1]	3	[1]	'
Total consumer [Member] \| Originated loans [Member] \| Other consumer [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	302		215		167
Total consumer [Member] \| Originated loans [Member] \| Other consumer [Member] \| Over 700 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	173		118		'
Total consumer [Member] \| Originated loans [Member] \| Other consumer [Member] \| 660 - 700 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	53		49		'
Total consumer [Member] \| Originated loans [Member] \| Other consumer [Member] \| 620-660 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	28		28		'
Total consumer [Member] \| Originated loans [Member] \| Other consumer [Member] \| 580 - 620 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	14		10		'
Total consumer [Member] \| Originated loans [Member] \| Other consumer [Member] \| Less than 580 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	15		10		'
Total consumer [Member] \| Originated loans [Member] \| Other consumer [Member] \| No Score [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	20	[1]	1	[1]	'
Total consumer [Member] \| Acquired loans [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	2,680		3,621		'
Percent of total	100.00%		100.00%		'
Total consumer [Member] \| Acquired loans [Member] \| Over 700 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	1,948		2,472		'
Percent of total	72.70%		68.30%		'
Total consumer [Member] \| Acquired loans [Member] \| 660 - 700 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	218		348		'
Percent of total	8.10%		9.60%		'
Total consumer [Member] \| Acquired loans [Member] \| 620-660 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	119		207		'
Percent of total	4.40%		5.70%		'
Total consumer [Member] \| Acquired loans [Member] \| 580 - 620 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	95		136		'
Percent of total	3.60%		3.80%		'
Total consumer [Member] \| Acquired loans [Member] \| Less than 580 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	114		193		'
Percent of total	4.30%		5.30%		'
Total consumer [Member] \| Acquired loans [Member] \| No Score [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	185	[1]	265	[1]	'
Percent of total	6.90%	[1]	7.30%	[1]	'
Total consumer [Member] \| Acquired loans [Member] \| Residential real estate [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	1,546		2,037		2,369
Total consumer [Member] \| Acquired loans [Member] \| Residential real estate [Member] \| Over 700 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	1,074		1,353		'
Total consumer [Member] \| Acquired loans [Member] \| Residential real estate [Member] \| 660 - 700 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	115		177		'
Total consumer [Member] \| Acquired loans [Member] \| Residential real estate [Member] \| 620-660 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	61		104		'
Total consumer [Member] \| Acquired loans [Member] \| Residential real estate [Member] \| 580 - 620 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	57		73		'
Total consumer [Member] \| Acquired loans [Member] \| Residential real estate [Member] \| Less than 580 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	75		109		'
Total consumer [Member] \| Acquired loans [Member] \| Residential real estate [Member] \| No Score [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	164	[1]	222	[1]	'
Total consumer [Member] \| Acquired loans [Member] \| Home equity [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	1,134		1,366		1,034
Total consumer [Member] \| Acquired loans [Member] \| Home equity [Member] \| Over 700 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	874		998		'
Total consumer [Member] \| Acquired loans [Member] \| Home equity [Member] \| 660 - 700 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	103		136		'
Total consumer [Member] \| Acquired loans [Member] \| Home equity [Member] \| 620-660 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	57		84		'
Total consumer [Member] \| Acquired loans [Member] \| Home equity [Member] \| 580 - 620 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	39		54		'
Total consumer [Member] \| Acquired loans [Member] \| Home equity [Member] \| Less than 580 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	40		70		'
Total consumer [Member] \| Acquired loans [Member] \| Home equity [Member] \| No Score [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	21	[1]	24	[1]	'
Total consumer [Member] \| Acquired loans [Member] \| Indirect auto [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	0		0		'
Total consumer [Member] \| Acquired loans [Member] \| Indirect auto [Member] \| Over 700 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	0		0		'
Total consumer [Member] \| Acquired loans [Member] \| Indirect auto [Member] \| 660 - 700 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	0		0		'
Total consumer [Member] \| Acquired loans [Member] \| Indirect auto [Member] \| 620-660 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	0		0		'
Total consumer [Member] \| Acquired loans [Member] \| Indirect auto [Member] \| 580 - 620 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	0		0		'
Total consumer [Member] \| Acquired loans [Member] \| Indirect auto [Member] \| Less than 580 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	0		0		'
Total consumer [Member] \| Acquired loans [Member] \| Indirect auto [Member] \| No Score [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	0	[1]	0	[1]	'
Total consumer [Member] \| Acquired loans [Member] \| Credit Cards [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	0		100		0
Total consumer [Member] \| Acquired loans [Member] \| Credit Cards [Member] \| Over 700 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	0		63		'
Total consumer [Member] \| Acquired loans [Member] \| Credit Cards [Member] \| 660 - 700 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	0		17		'
Total consumer [Member] \| Acquired loans [Member] \| Credit Cards [Member] \| 620-660 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	0		9		'
Total consumer [Member] \| Acquired loans [Member] \| Credit Cards [Member] \| 580 - 620 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	0		4		'
Total consumer [Member] \| Acquired loans [Member] \| Credit Cards [Member] \| Less than 580 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	0		5		'
Total consumer [Member] \| Acquired loans [Member] \| Credit Cards [Member] \| No Score [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	0	[1]	1	[1]	'
Total consumer [Member] \| Acquired loans [Member] \| Other consumer [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	0		118		111
Total consumer [Member] \| Acquired loans [Member] \| Other consumer [Member] \| Over 700 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	0		57		'
Total consumer [Member] \| Acquired loans [Member] \| Other consumer [Member] \| 660 - 700 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	0		18		'
Total consumer [Member] \| Acquired loans [Member] \| Other consumer [Member] \| 620-660 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	0		11		'
Total consumer [Member] \| Acquired loans [Member] \| Other consumer [Member] \| 580 - 620 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	0		6		'
Total consumer [Member] \| Acquired loans [Member] \| Other consumer [Member] \| Less than 580 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	0		8		'
Total consumer [Member] \| Acquired loans [Member] \| Other consumer [Member] \| No Score [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	$0	[1]	$19	[1]	'

[1]	Primarily includes loans that are serviced by others for which refreshed FICO scores were not available as of the date indicated.

Loans_and_Leases_Summary_of_Tr

Loans and Leases - Summary of Troubled Debt Restructurings (Details) (USD $)	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
In Millions, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Aggregate recorded investment of impaired loans with terms through troubled debt restructuring	'		'		'
Accruing interest	$52		$46		$44
Nonaccrual	56		42		34
Total troubled debt restructurings	$108	[1]	$89	[1]	$77

[1]	Includes 40 and 44 acquired loans that were restructured with a recorded investment of $1 million and $3 million at December 31, 2013 and 2012, respectively.

Loans_and_Leases_Troubled_Debt

Loans and Leases - Troubled Debt Restructuring by Concession Type (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012
	Contract		Contract
Financing effects of our modifications	'		'
Count	267		362
Postmodification recorded investment	$55	[1]	$40	[1]
Premodification allowance for loan losses	4		2
Postmodification allowance for loan losses	2		1
Total commercial [Member]	'		'
Financing effects of our modifications	'		'
Count	31		24
Postmodification recorded investment	46	[1]	20	[1]
Premodification allowance for loan losses	4		2
Postmodification allowance for loan losses	1		1
Total commercial [Member] \| Commercial real estate [Member] \| Extension of term [Member]	'		'
Financing effects of our modifications	'		'
Count	5		10
Postmodification recorded investment	9	[1]	11	[1]
Premodification allowance for loan losses	1		1
Postmodification allowance for loan losses	1		0
Total commercial [Member] \| Commercial real estate [Member] \| Deferral of principal [Member]	'		'
Financing effects of our modifications	'		'
Count	1		1
Postmodification recorded investment	8	[1]	0	[1]
Premodification allowance for loan losses	0		0
Postmodification allowance for loan losses	0		0
Total commercial [Member] \| Commercial real estate [Member] \| Extension of term and rate reduction [Member]	'		'
Financing effects of our modifications	'		'
Count	8		1
Postmodification recorded investment	17	[1]	1	[1]
Premodification allowance for loan losses	1		0
Postmodification allowance for loan losses	0		0
Total commercial [Member] \| Business [Member] \| Extension of term [Member]	'		'
Financing effects of our modifications	'		'
Count	10		8
Postmodification recorded investment	10	[1]	4	[1]
Premodification allowance for loan losses	2		0
Postmodification allowance for loan losses	0		0
Total commercial [Member] \| Business [Member] \| Deferral of principal [Member]	'		'
Financing effects of our modifications	'		'
Count	'		1
Postmodification recorded investment	'		0	[1]
Premodification allowance for loan losses	'		0
Postmodification allowance for loan losses	'		0
Total commercial [Member] \| Business [Member] \| Extension of term and rate reduction [Member]	'		'
Financing effects of our modifications	'		'
Count	7		2
Postmodification recorded investment	1	[1]	4	[1]
Premodification allowance for loan losses	0		1
Postmodification allowance for loan losses	0		1
Total commercial [Member] \| Business [Member] \| Rate reduction [Member][	'		'
Financing effects of our modifications	'		'
Count	'		1
Postmodification recorded investment	'		0	[1]
Premodification allowance for loan losses	'		0
Postmodification allowance for loan losses	'		0
Total consumer [Member]	'		'
Financing effects of our modifications	'		'
Count	236		338
Postmodification recorded investment	9	[1]	20	[1]
Premodification allowance for loan losses	0		0
Postmodification allowance for loan losses	0		1
Total consumer [Member] \| Residential real estate [Member] \| Extension of term [Member]	'		'
Financing effects of our modifications	'		'
Count	2		4
Postmodification recorded investment	0	[1]	0	[1]
Premodification allowance for loan losses	0		0
Postmodification allowance for loan losses	0		0
Total consumer [Member] \| Residential real estate [Member] \| Extension of term and rate reduction [Member]	'		'
Financing effects of our modifications	'		'
Count	11		3
Postmodification recorded investment	2	[1]	2	[1]
Premodification allowance for loan losses	0		0
Postmodification allowance for loan losses	0		0
Total consumer [Member] \| Residential real estate [Member] \| Rate reduction [Member][	'		'
Financing effects of our modifications	'		'
Count	3		3
Postmodification recorded investment	0	[1]	0	[1]
Premodification allowance for loan losses	0		0
Postmodification allowance for loan losses	0		0
Total consumer [Member] \| Residential real estate [Member] \| Deferral of principal and extension of term [Member]	'		'
Financing effects of our modifications	'		'
Count	5		5
Postmodification recorded investment	0	[1]	1	[1]
Premodification allowance for loan losses	0		0
Postmodification allowance for loan losses	0		0
Total consumer [Member] \| Residential real estate [Member] \| Chapter 7 bankruptcy [Member]	'		'
Financing effects of our modifications	'		'
Count	15		79
Postmodification recorded investment	1	[1]	6	[1]
Premodification allowance for loan losses	0		0
Postmodification allowance for loan losses	0		0
Total consumer [Member] \| Residential real estate [Member] \| Other [Member]	'		'
Financing effects of our modifications	'		'
Count	'		6
Postmodification recorded investment	'		1	[1]
Premodification allowance for loan losses	'		0
Postmodification allowance for loan losses	'		0
Total consumer [Member] \| Home equity [Member] \| Extension of term and rate reduction [Member]	'		'
Financing effects of our modifications	'		'
Count	3		4
Postmodification recorded investment	0	[1]	0	[1]
Premodification allowance for loan losses	0		0
Postmodification allowance for loan losses	0		0
Total consumer [Member] \| Home equity [Member] \| Rate reduction [Member][	'		'
Financing effects of our modifications	'		'
Count	2		'
Postmodification recorded investment	0	[1]	'
Premodification allowance for loan losses	0		'
Postmodification allowance for loan losses	0		'
Total consumer [Member] \| Home equity [Member] \| Deferral of principal and extension of term [Member]	'		'
Financing effects of our modifications	'		'
Count	3		'
Postmodification recorded investment	0	[1]	'
Premodification allowance for loan losses	0		'
Postmodification allowance for loan losses	0		'
Total consumer [Member] \| Home equity [Member] \| Chapter 7 bankruptcy [Member]	'		'
Financing effects of our modifications	'		'
Count	61		160
Postmodification recorded investment	2	[1]	7	[1]
Premodification allowance for loan losses	0		0
Postmodification allowance for loan losses	0		0
Total consumer [Member] \| Home equity [Member] \| Other [Member]	'		'
Financing effects of our modifications	'		'
Count	'		2
Postmodification recorded investment	'		0	[1]
Premodification allowance for loan losses	'		0
Postmodification allowance for loan losses	'		0
Total consumer [Member] \| Indirect auto [Member] \| Chapter 7 bankruptcy [Member]	'		'
Financing effects of our modifications	'		'
Count	74		12
Postmodification recorded investment	1	[1]	0	[1]
Premodification allowance for loan losses	0		0
Postmodification allowance for loan losses	0		0
Total consumer [Member] \| Other consumer [Member] \| Chapter 7 bankruptcy [Member]	'		'
Financing effects of our modifications	'		'
Count	54		60
Postmodification recorded investment	1	[1]	2	[1]
Premodification allowance for loan losses	0		0
Postmodification allowance for loan losses	0		0
Total consumer [Member] \| Other consumer [Member] \| Extension of term [Member]	'		'
Financing effects of our modifications	'		'
Count	1		'
Postmodification recorded investment	0	[1]	'
Premodification allowance for loan losses	0		'
Postmodification allowance for loan losses	0		'
Total consumer [Member] \| Other consumer [Member] \| Extension of term and rate reduction [Member]	'		'
Financing effects of our modifications	'		'
Count	1		'
Postmodification recorded investment	0	[1]	'
Premodification allowance for loan losses	0		'
Postmodification allowance for loan losses	0		'
Total consumer [Member] \| Other consumer [Member] \| Rate reduction [Member][	'		'
Financing effects of our modifications	'		'
Count	1		'
Postmodification recorded investment	0	[1]	'
Premodification allowance for loan losses	0		'
Postmodification allowance for loan losses	$0		'

[1]	Postmodification balances approximate premodification balances. The aggregate amount of charge-offs as a result of the restructurings was not significant.

Loans_and_Leases_Troubled_Debt1

Loans and Leases - Troubled Debt Restructurings which have Redefaulted (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Recorded investment in loans which have been modified	'	'
Recorded investment in TDRs	$0	$7
Total commercial [Member]	'	'
Recorded investment in loans which have been modified	'	'
Recorded investment in TDRs	0	7
Total commercial [Member] \| Commercial real estate [Member]	'	'
Recorded investment in loans which have been modified	'	'
Recorded investment in TDRs	0	1
Total commercial [Member] \| Business [Member]	'	'
Recorded investment in loans which have been modified	'	'
Recorded investment in TDRs	0	6
Total consumer [Member]	'	'
Recorded investment in loans which have been modified	'	'
Recorded investment in TDRs	0	0
Total consumer [Member] \| Residential real estate [Member]	'	'
Recorded investment in loans which have been modified	'	'
Recorded investment in TDRs	0	0
Total consumer [Member] \| Home equity [Member]	'	'
Recorded investment in loans which have been modified	'	'
Recorded investment in TDRs	0	0
Total consumer [Member] \| Other consumer [Member]	'	'
Recorded investment in loans which have been modified	'	'
Recorded investment in TDRs	$0	$0

Loans_and_Leases_Information_a

Loans and Leases - Information about Residential Mortgage Banking (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Information about residential mortgage loans	'	'	'
Loans classified as held for sale	$50	$155	$94
Loans sold during the year	1,400	1,444	738
Gain on sale of loans, net	12	9	3
Mortgages serviced for others	3,665	2,909	2,071
Mortgage servicing asset recorded for loans serviced for others, net	$35	$26	$17

Loans_and_Leases_Details_Textu

Loans and Leases (Details Textual) (USD $)	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012
	Contract		Contract
Accounts, Notes, Loans and Financing Receivable [Line Items]	'		'
Number of segments in portfolio	2		'
Liability for unfunded commitments	$13,000,000		$12,000,000
Provision for credit losses	2,000,000		1,000,000
Home equity portfolio	2,800,000,000		2,700,000,000
Portion of home equity portfolio in first lien position	1,000,000,000		900,000,000
Percentage of home equity portfolio first lien loan hold and service	10.00%		'
Other changes in accretable yield	22,000,000	[1]	'
Carrying value of impaired loans, less related allowance, as percent of principal	69.00%		67.00%
Minimum number of payments of restructured loan	6		'
Threshold Loans Individually Impaired	'less than $200 thousand		'
Troubled debt restructures acquired loan portfolio count	40		44
Troubled debt restructures acquired loan portfolio	$1,000,000		$3,000,000

[1]	Includes changes in expected cash flows from changes in interest rate and prepayment assumptions.

Premises_and_Equipment_Details

Premises and Equipment (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
A summary of our premises and equipment	'	'	'
Land	$29	$29	'
Buildings and leasehold improvements	287	270	'
Furniture and equipment	307	268	'
Total	623	567	'
Accumulated depreciation	-205	-156	'
Premises and equipment, net	418	411	'
Premises and Equipment (Textual) [Abstract]	'	'	'
Rent expense	$33	$28	$34

Goodwill_and_Other_Intangible_2

Goodwill and Other Intangible Assets - Goodwill (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012
Information regarding our goodwill	'		'
Goodwill, beginning	$2,484		$1,708
Acquisitions	'		780
Branch sales	'		-5
Adjustment	-35	[1]	'
Goodwill, ending	2,449		2,484
Banking [Member]	'		'
Information regarding our goodwill	'		'
Goodwill, beginning	2,416		1,641
Acquisitions	'		780
Branch sales	'		-5
Adjustment	-35	[1]	'
Goodwill, ending	2,381		2,416
Financial services [Member]	'		'
Information regarding our goodwill	'		'
Goodwill, beginning	68		68
Acquisitions	'		0
Branch sales	'		0
Adjustment	0		'
Goodwill, ending	$68		$68

[1]	Establishment of deferred tax assets in connection with the HSBC Branch Acquisition and our National City Bank branch acquisition.

Goodwill_and_Other_Intangible_3

Goodwill and Other Intangible Assets - Amortizing Intangible Assets (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Information regarding our amortizing intangible assets	'	'
Net carrying amount	$94	$134
Core deposit intangible [Member]	'	'
Information regarding our amortizing intangible assets	'	'
Finite-Lived Intangible Asset, Gross	191	191
Accumulated amortization	-139	-111
Net carrying amount	52	81
Other intangibles [Member]	'	'
Information regarding our amortizing intangible assets	'	'
Finite-Lived Intangible Asset, Gross	95	99
Accumulated amortization	-53	-46
Net carrying amount	$42	$53

Goodwill_and_Other_Intangible_4

Goodwill and Other Intangible Assets - Future Amortization Expense (Details) (USD $)	Dec. 31, 2013
In Millions, unless otherwise specified	Dec. 31, 2013
Goodwill [Line Items]	'
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months	$27
Finite-Lived Intangible Assets, Amortization Expense, Year Two	19
Finite-Lived Intangible Assets, Amortizations Expense, Year Three	13
Finite-Lived Intangible Assets, Amortizations Expense, Year Four	12
Finite-Lived Intangible Assets, Amortizations Expense, Year Five	9
Finite-Lived Intangible Assets, Amortizations Expense, after Year Five	14
First quarter [Member]	'
Goodwill [Line Items]	'
Finite-Lived Intangible Assets, Amortizations Expense, Year Five	3
Second quarter [Member]	'
Goodwill [Line Items]	'
Finite-Lived Intangible Assets, Amortizations Expense, Year Five	2
Third quarter [Member]	'
Goodwill [Line Items]	'
Finite-Lived Intangible Assets, Amortizations Expense, Year Five	2
Fourth quarter [Member]	'
Goodwill [Line Items]	'
Finite-Lived Intangible Assets, Amortizations Expense, Year Five	2
First quarter [Member]	'
Goodwill [Line Items]	'
Finite-Lived Intangible Assets, Amortizations Expense, Year Four	3
Second quarter [Member]	'
Goodwill [Line Items]	'
Finite-Lived Intangible Assets, Amortizations Expense, Year Four	3
Third quarter [Member]	'
Goodwill [Line Items]	'
Finite-Lived Intangible Assets, Amortizations Expense, Year Four	3
Fourth quarter [Member]	'
Goodwill [Line Items]	'
Finite-Lived Intangible Assets, Amortizations Expense, Year Four	3
First quarter [Member]	'
Goodwill [Line Items]	'
Finite-Lived Intangible Assets, Amortizations Expense, Year Three	4
Second quarter [Member]	'
Goodwill [Line Items]	'
Finite-Lived Intangible Assets, Amortizations Expense, Year Three	3
Third quarter [Member]	'
Goodwill [Line Items]	'
Finite-Lived Intangible Assets, Amortizations Expense, Year Three	3
Fourth quarter [Member]	'
Goodwill [Line Items]	'
Finite-Lived Intangible Assets, Amortizations Expense, Year Three	3
First quarter [Member]	'
Goodwill [Line Items]	'
Finite-Lived Intangible Assets, Amortization Expense, Year Two	6
Second quarter [Member]	'
Goodwill [Line Items]	'
Finite-Lived Intangible Assets, Amortization Expense, Year Two	5
Third quarter [Member]	'
Goodwill [Line Items]	'
Finite-Lived Intangible Assets, Amortization Expense, Year Two	4
Fourth quarter [Member]	'
Goodwill [Line Items]	'
Finite-Lived Intangible Assets, Amortization Expense, Year Two	4
First quarter [Member]	'
Goodwill [Line Items]	'
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months	8
Second quarter [Member]	'
Goodwill [Line Items]	'
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months	7
Third quarter [Member]	'
Goodwill [Line Items]	'
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months	6
Fourth quarter [Member]	'
Goodwill [Line Items]	'
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months	$6

Goodwill_and_Other_Intangible_5

Goodwill and Other Intangible Assets (Details Textual) (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Feb. 24, 2014	Nov. 01, 2013
Goodwill and Intangible Assets Disclosure [Abstract]	'	'	'	'
Goodwill impairment charge	$0	$0	'	'
Share Price	'	'	$8.82	$11.05

Deposits_Composition_Rates_and

Deposits - Composition, Rates and Interest Expense (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Core deposits:	'	'	'
Savings, balance	$3,667	$3,888	'
Savings, weighted average rate	0.10%	0.15%	'
Interest-bearing checking, balance	4,744	4,451	'
Interest-bearing checking, weighted average rate	0.04%	0.07%	'
Money market deposits, balance	9,740	10,581	'
Money market deposits, weighted average rate	0.21%	0.28%	'
Noninterest-bearing, balance	4,866	4,644	'
Noninterest-bearing, weighted average rate	0.00%	0.00%	'
Total core deposits, balance	23,016	23,563	'
Total core deposits, weighted average rate	0.12%	0.17%	'
Certificates, balance	3,649	4,113	'
Certificates, weighted average rate	0.68%	0.81%	'
Total deposits, balance	26,665	27,677	'
Total deposits, weighted average rate	0.20%	0.27%	'
Interest expense on deposits	'	'	'
Certificates	26	33	40
Money market deposits	21	26	36
Savings	4	5	5
Interest bearing checking	2	2	2
Total interest expense	$53	$67	$83

Deposits_Details_Textual

Deposits (Details Textual) (USD $)	12 Months Ended
Deposits (Details Textual) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Deposits (Textual) [Abstract]	'	'	'
Interest rates on certificates minimum	0.05%	'	'
Interest rates on certificates maximum	5.02%	'	'
Certificates of Deposits issued over $100 thousand	$928,000,000	$1,700,000,000	$1,300,000,000
Interest Expense certificates of deposit $100,000 or More	11,000,000	11,000,000	16,000,000
Brokered deposits in Certificates	739,000,000	635,000,000	62,000,000
Municipal deposits	$2,900,000,000	$3,300,000,000	'

Borrowings_Composition_Outstan

Borrowings - Composition Outstanding (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Short-term borrowings:	'	'
FHLB advances	$4,304	$2,439
Repurchase agreements	518	545
Total short-term borrowings	4,822	2,984
Long-term borrowings:	'	'
Senior notes (maturing in 2020)	298	297
Subordinated notes (maturing in 2021)	298	298
Junior subordinated debentures (maturing between 2030 and 2037)	113	112
Other (maturing between 2014 and 2032)	25	25
Total long-term borrowings	734	732
Total borrowings	$5,556	$3,716

Borrowings_Interest_Expense_De

Borrowings - Interest Expense (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Interest expense by debt instrument [Line Items]	'	'	'
Interest expense	$64	$86	$101
FHLB advances	'	'	'
Interest expense by debt instrument [Line Items]	'	'	'
Interest expense	14	19	43
Repurchase agreements	'	'	'
Interest expense by debt instrument [Line Items]	'	'	'
Interest expense	1	17	31
Senior notes	'	'	'
Interest expense by debt instrument [Line Items]	'	'	'
Interest expense	21	21	21
Subordinated notes	'	'	'
Interest expense by debt instrument [Line Items]	'	'	'
Interest expense	23	23	1
Junior subordinated debentures	'	'	'
Interest expense by debt instrument [Line Items]	'	'	'
Interest expense	$5	$6	$5

Borrowings_Aggregate_Maturitie

Borrowings - Aggregate Maturities (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Aggregate Maturities of long term Borrowings	'	'
2014	$2	'
2015	2	'
2016	2	'
2017	2	'
2018	2	'
Thereafter	724	'
Total long-term borrowings	$734	$732

Borrowings_Details_Textual

Borrowings (Details Textual) (USD $)	12 Months Ended
Borrowings (Details Textual) (USD $)	Dec. 31, 2013	Dec. 31, 2012
Debt instrument [Line Items]	'	'
FHLB advances fixed interest rates, minimum	0.39%	'
FHLB advances fixed interest rates, maximum	0.51%	'
FHLB advances bear fixed interest weighted average rate	0.46%	0.43%
Repurchase agreements fixed interest rates, minimum	0.02%	'
Repurchase agreements fixed interest rates, maximum	0.20%	'
Repurchase agreements bear fixed interest weighted average rate	0.18%	0.18%
Rates paid on senior notes	6.75%	'
Subordinated debenture interest rates, minimum	1.52%	'
Subordinated debenture interest rates, maximum	10.88%	'
Subordinated debenture weighted interest rates	2.65%	'
FHLB facility total	$4,500,000,000	$4,000,000,000
FHLB facility, utilized	4,200,000,000	2,400,000,000
FHLB facility, secured by real estate loans	3,900,000,000	4,000,000,000
FHLB facility, secured by investment securities	584,000,000	0
Federal Reserve Bank facility not utilized	777,000,000	738,000,000
Commercial banks facility, not utilized	200,000,000	200,000,000
Line of credit rate commercial bank	'London Interbank Offered Rate (â€œLIBORâ€) plus 150 basis points	'
Period Change in debt basis spread on variable rate user condition one	'30 days	'
Period Change in debt basis spread on variable rate user condition two	'60 days	'
Period Change in debt basis spread on variable rate user condition three	'90 days	'
Average broker repurchase agreements	'	900,000,000
Fair value of pledged securities to collateralize repurchase borrowing	303,000,000	586,000,000
Amount at risk under repurchase agreements with any individual counterparty or group of related counterparties	0	'
Securities held to maturity were pledged to collateralize the borrowings	0	'
Rate paid on subordinated notes	7.25%	'
First Niagara Financial Group Statutory Trust	'	'
Debt instrument [Line Items]	'	'
Number of statutory trusts	6	'
Acquired from Merger with Harleysville, New Alliance and related to First Niagara Statutory Trusts I	'	'
Debt instrument [Line Items]	'	'
Number of statutory trusts	3	'
Equity method investments classified as other assets	4,000,000	'
Junior Subordinated debentures of the Company held by Statutory Trusts \| Acquired from Merger with Harleysville, New Alliance and related to First Niagara Statutory Trusts I	'	'
Debt instrument [Line Items]	'	'
Face value of junior subordinated debentures	142,000,000	'
Carrying value of junior subordinated debentures of the Company	113,000,000	'
Preferred subordinate debentures \| Acquired from Merger with Harleysville, New Alliance and related to First Niagara Statutory Trusts I	'	'
Debt instrument [Line Items]	'	'
Unamortized fair value adjustment related to merger with Harleysville	$29,000,000	'

Derivative_Financial_Instrumen2

Derivative Financial Instruments - Notional Amount and Fair Value of Derivative Instruments (Details) (USD $)	Dec. 31, 2013		Dec. 31, 2012
In Millions, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012
Derivative financial instruments	'		'
Asset Derivatives, Notional Amount	$3,114		$2,195
Asset Derivatives, Fair Value	76	[1]	102	[1]
Liability Derivatives, Notional Amount	3,107		2,210
Liability Derivatives, Fair Value	77		105	[2]
Interest Rate Swap [Member] \| Designated as Hedging Instrument [Member]	'		'
Derivative financial instruments	'		'
Asset Derivatives, Notional Amount	22		0
Asset Derivatives, Fair Value	0	[1]	0	[1]
Liability Derivatives, Notional Amount	13		15
Liability Derivatives, Fair Value	1	[2]	2	[2]
Interest Rate Swap [Member] \| Not Designated as Hedging Instrument [Member]	'		'
Derivative financial instruments	'		'
Asset Derivatives, Notional Amount	3,092		2,195
Asset Derivatives, Fair Value	76	[1]	102	[1]
Liability Derivatives, Notional Amount	3,094		2,195
Liability Derivatives, Fair Value	$76	[2]	$103	[2]

[1]	Represents gross amounts, included in Other Assets in our Consolidated Statements of Condition.
[2]	Represents gross amounts, included in Other Liabilities in our Consolidated Statements of Condition.

Derivative_Financial_Instrumen3

Derivative Financial Instruments - Amount of Gain/Loss Recognized for Derivative Instruments (Details) (Interest Rate Swap [Member], Cash Flow Hedging [Member], USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Interest Rate Swap [Member] \| Cash Flow Hedging [Member]	'		'		'
Interest rate swap agreements:	'		'		'
Amount of gain (loss) on derivatives recognized in other comprehensive income, net of tax	$1		$7		($16)
Amount of (loss) on derivatives reclassified from other comprehensive income to income	($1)	[1]	($15)	[2]	($10)	[1]

[1]	Recognized in interest expense on borrowings in our Consolidated Statements of Income.
[2]	Of this amount, $12 million was recognized in merger and acquisition integration expenses when the associated borrowings were repaid in connection with the HSBC Branch Acquisition and $4 million was recognized in interest expense on borrowings in our Consolidated Statements of Income.

Derivative_Financial_Instrumen4

Derivative Financial Instruments (Details Textual) (USD $)	3 Months Ended					12 Months Ended
	Jun. 30, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2012	Dec. 31, 2012	Dec. 31, 2012
	Jun. 30, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Customer Swap [Member]	Customer Swap [Member]	Securities Sale Agreement [Member]	Merger and Acquisition expense [Member]	Interest Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'	'	'	'	'	'	'	'
Net liability positions with counterparties	'	$49,000,000	'	'	'	'	'	'	'	'
Gross amounts of recognized liabilities to be offset with asset	'	76,000,000	'	'	'	'	'	'	'	'
Gross amount of asset offsetting liabilities in the Statement of Condition	'	27,000,000	'	'	'	'	'	'	'	'
Amount recognized in merger and acquisition integration expenses and interest expense	'	'	'	'	'	'	'	'	12,000,000	4,000,000
Collateral posted for net liability positions	'	43,000,000	125,000,000	'	'	'	'	'	'	'
Loss in accumulated other comprehensive income borrowings previously hedged	'	6,000,000	6,000,000	13,000,000	-3,000,000	'	'	'	'	'
Derivative Revenue	'	'	'	'	'	18,000,000	25,000,000	'	'	'
Sale of investment securities to third party	3,100,000,000	'	'	'	'	'	'	'	'	'
Security sales derivative gain	'	'	'	'	'	'	'	$5,000,000	'	'

Commitments_and_Contingent_Lia2

Commitments and Contingent Liabilities - Loan Commitments (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Commitments and Contingencies [Line Items]	'	'
Commitments to sell residential mortgages	$168	$474
Outstanding commitments to originate loans:	'	'
Fixed rate	217	502
Variable rate	964	837
Total commitments outstanding	1,181	1,339
Unused lines of credit	'	'
Commitments and Contingencies [Line Items]	'	'
Unused lines of credit	8,400	7,734
Standby letters of credit	'	'
Commitments and Contingencies [Line Items]	'	'
Standby letters of credit	$297	$352

Commitments_and_Contingent_Lia3

Commitments and Contingent Liabilities Commitments and Contingent Liabilities - Lease Commitments (Details) (USD $)	Dec. 31, 2013
In Millions, unless otherwise specified	Dec. 31, 2013
Operating leases, future minimum payments [Abstract]	'
2014	$33
2015	30
2016	27
2017	21
2018	17
Thereafter through 2041	69	[1]
Capital leases, future minimum payments [Abstract]	'
2014	3
2015	3
2016	3
2017	3
2018	3
Thereafter through 2032	$19	[2]

[1]	Thereafter through 2041.
[2]	Thereafter through 2032.

Commitments_and_Contingent_Lia4

Commitments and Contingent Liabilities (Details Textual) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Commitments and Contingencies Disclosure [Abstract]	'	'
Liability for unfunded commitments	$13	$12
Provision for credit losses for unfunded commitments	$2	$1

Capital_Details

Capital (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
First Niagara Financial Group, Inc.	'	'
Actual capital amounts, ratios, and requirements	'	'
Leverage ratio amount	$2,526	$2,265
Leverage ratio	7.26%	6.75%
Leverage capital for capital adequacy purposes	1,392	1,342
Leverage ratio for capital adequacy purposes	4.00%	4.00%
Leverage ratio required to be well-capitalized value	1,739	1,678
Leverage ratio required to be well-capitalized	5.00%	5.00%
Tier one risk-based capital	2,526	2,265
Tier one risk-based capital ratio	9.56%	9.29%
Tier one risk-based capital for capital adequacy purposes	1,057	975
Tier one risk-based capital ratio for capital adequacy purposes	4.00%	4.00%
Tier one risk-based capital to be well-capitalized	1,585	1,463
Tier one risk-based capital ratio to be well-capitalized	6.00%	6.00%
Tota risk-based capital	3,046	2,737
Total risk-based capital ratio	11.53%	11.23%
Total risk-based capital for capital adequacy purposes	2,114	1,950
Total risk-based capital ratio for capital adequacy purposes	8.00%	8.00%
Total risk-based capital to be well-capitalized	2,642	2,437
Total risk-based capital ratio to be well-capitalized	10.00%	10.00%
First Niagara Bank, N.A.	'	'
Actual capital amounts, ratios, and requirements	'	'
Leverage ratio amount	2,675	2,423
Leverage ratio	7.70%	7.23%
Leverage capital for capital adequacy purposes	1,390	1,340
Leverage ratio for capital adequacy purposes	4.00%	4.00%
Leverage ratio required to be well-capitalized value	1,737	1,676
Leverage ratio required to be well-capitalized	5.00%	5.00%
Tier one risk-based capital	2,675	2,423
Tier one risk-based capital ratio	10.15%	9.94%
Tier one risk-based capital for capital adequacy purposes	1,054	975
Tier one risk-based capital ratio for capital adequacy purposes	4.00%	4.00%
Tier one risk-based capital to be well-capitalized	1,581	1,462
Tier one risk-based capital ratio to be well-capitalized	6.00%	6.00%
Tota risk-based capital	2,898	2,597
Total risk-based capital ratio	10.99%	10.66%
Total risk-based capital for capital adequacy purposes	2,109	1,949
Total risk-based capital ratio for capital adequacy purposes	8.00%	8.00%
Total risk-based capital to be well-capitalized	$2,637	$2,437
Total risk-based capital ratio to be well-capitalized	10.00%	10.00%

Capital_Detail_Textual

Capital (Detail Textual) (USD $)	12 Months Ended
In Millions, except Per Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]	'	'
Company's contribution in capital to the Bank in order to provide capital for the upcoming HSBC acquisition	'	$215
Preferred stock, par value	$0.01	$0.01
Common stock	'	'
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]	'	'
Shares authorized to be repurchased	12	'
Series B Preferred Stock [Member]	'	'
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]	'	'
Preferred rate of dividend	8.63%	'
Dividends paid at floating rate	7.33%	'
Redemption price per share	$25	'
First Niagara Bank, N.A.	'	'
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]	'	'
Aggregate dividends that can be paid	464	'
Dividend Limitation To Maintain Well Capitalized Status	261	'
Dividends paid	$175	$45

Income_Taxes_Components_of_Exp

Income Taxes - Components of Expense (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Current:	'	'	'
Federal	$119	$36	$81
State	4	1	6
Current income tax expense	123	37	87
Deferred taxes (benefit):	'	'	'
Federal	3	31	3
State	1	3	-2
Deferred income tax expense	5	34	1
Total income tax expense	$128	$71	$88

Income_Taxes_Actual_Expense_Vs

Income Taxes - Actual Expense Vs Statutory Expense (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Disclosure [Abstract]	'	'	'
Tax expense at statutory rate	$148	$84	$92
Increase (decrease) attributable to:	'	'	'
State income taxes, net of Federal benefit	4	2	3
Bank owned life insurance income	-6	-5	-4
Tax exempt interest	-11	-10	-9
Nondeductible acquisition costs	0	0	2
Credits	-13	-2	-2
Other	6	2	7
Total income tax expense	$128	$71	$88

Income_Taxes_Deferred_Tax_Asse

Income Taxes - Deferred Tax Asset and Liability (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
Deferred tax assets:	'	'
Net operating loss and other carryforwards acquired	$58,000,000	$77,000,000
Financial statement allowance for credit losses	111,000,000	103,000,000
Securitizations	2,000,000	-27,000,000
Deferred compensation	13,000,000	15,000,000
Stock-based compensation	14,000,000	14,000,000
Other accrued expenses not currently deductible	21,000,000	18,000,000
Post-retirement benefit obligation	4,000,000	5,000,000
Nonperforming loan interest	12,000,000	9,000,000
Other	28,000,000	22,000,000
Total gross deferred tax assets	264,000,000	236,000,000
Valuation allowance	-200,000	-2,000,000
Deferred tax liabilities:	'	'
Unrealized gain on investment securities available for sale	-52,000,000	-128,000,000
Partnerships	-3,000,000	-3,000,000
Leases	-27,000,000	-22,000,000
Acquired intangibles	-33,000,000	-29,000,000
Premises and equipment	-19,000,000	-19,000,000
Mortgage servicing rights	-13,000,000	-10,000,000
Pension benefits	-37,000,000	-22,000,000
Other	-2,000,000	-6,000,000
Total gross deferred tax liabilities	-187,000,000	-239,000,000
Net deferred tax asset (liability)	$77,000,000	($5,000,000)

Income_Taxes_Unrecognized_Tax_

Income Taxes - Unrecognized Tax Benefits (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Reconciliation of unrecognized tax benefits	'	'	'
Balance at beginning of year	$3	$3	$8
Additions based on tax positions related to the current year	1	1	1
Additions for tax positions of prior years	3	0	0
Reductions related to settlements with taxing authorities	-1	-2	0
Reductions as a result of the lapse of the applicable statute of limitations	0	0	-6
Balance at end of year	$6	$3	$3

Income_Taxes_Details_Textual

Income Taxes (Details Textual) (USD $)	12 Months Ended
Income Taxes (Details Textual) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Operating Loss Carryforwards [Line Items]	'	'	'
Effective income tax rate	30.20%	29.60%	33.70%
Effective income tax rate reconciliation, at federal statutory income tax rate	35.00%	'	'
Valuation allowance for net operating loss carryforwards	$0	'	'
Federal and state tax credits	25,000,000	'	'
Valuation allowance	200,000	2,000,000	'
Unrecognized tax benefits, income tax penalties and interest accrued	300,000	300,000	'
Reversal of Unrecognized Tax Benefits	100,000	'	'
Federal Alternative Minimum Tax	'	'	'
Operating Loss Carryforwards [Line Items]	'	'	'
Tax credit carryforward, amount	7,000,000	'	'
Domestic Tax Authority [Member]	'	'	'
Operating Loss Carryforwards [Line Items]	'	'	'
Net operating losses carried to number of preceeding years	'2 years	'	'
Net operating losses carried to number of succeeding years	'20 years	'	'
Operating loss carryforwards	139,000,000	'	'
State and Local Jurisdiction [Member]	'	'	'
Operating Loss Carryforwards [Line Items]	'	'	'
Operating loss carryforwards	69,000,000	'	'
Federal Pre Nineteen Eighty Eight Reserve for Which No Federal Income Tax Provision Has Been Made [Member]	'	'	'
Operating Loss Carryforwards [Line Items]	'	'	'
Federal reserve excluding federal income tax provision	$92,000,000	'	'

Earnings_Per_Share_Details

Earnings Per Share (Details) (USD $)	12 Months Ended
In Millions, except Per Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Computation of basic and diluted earnings per share using two-class method	'	'	'
Net income available to common stockholders	$265	$141	$174
Less income allocable to unvested restricted stock awards	1	0	0
Net income allocable to common stockholders	$264	$140	$173
Weighted average common shares outstanding:	'	'	'
Total shares issued	366	366	285
Unallocated employee stock ownership plan shares	-2	-2	-3
Unvested restricted stock awards	-2	-1	-1
Treasury shares	-12	-14	-11
Total basic weighted average common shares outstanding	350	349	271
Incremental shares from assumed vesting of restricted stock awards	1	0	0
Total diluted weighted average common shares outstanding	350	349	272
Basic earnings per common share	$0.75	$0.40	$0.64
Diluted earnings per common share	$0.75	$0.40	$0.64
Anti-dilutive stock options and restricted stock awards excluded from the diluted weighted average common share calculations	11	12	11

Other_Comprehensive_Income_Com

Other Comprehensive Income - Comprehensive Income (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Securities available for sale:	'		'		'
Net unrealized holding (losses) gains arising during the year, pretax	($177)		$177		$68
Reclassification adjustment for realized gains included in net income, pretax	'		-16		-5
Reclassification adjustment for net unrealized holding gains on securities transferred between available for sale and held to maturity, pretax	-55		4		-6
Net unrealized (losses) gains on securities available for sale, pretax	-232		165		56
Net unrealized holding (losses) gains arising during the year, tax	-68		68		26
Reclassification adjustment for realized gains included in net income, tax	'		-6		-2
Reclassification adjustment for net unrealized holding gains on securities transferred between available for sale and held to maturity, tax	-21		2		-2
Net unrealized (losses) gains on securities available for sale, tax	-89		64		22
Net unrealized holding (losses) gains arising during the year, net of tax	-109		109		42
Reclassification adjustment for realized gains included in net income, net of tax	0		-10		-3
Reclassification adjustment for net unrealized holding gains on securities transferred between available for sale and held to maturity, net of tax	-34		2		-4
Net unrealized (losses) gains on securities available for sale	-143		101		35
Net unrealized holding gains on securities transferred between available for sale and held to maturity:	'		'		'
Net unrealized holding gains transferred during the year, pretax	55		-4		6
Amortization of net unrealized holding gains to income during the year, pretax	-20	[1]	-3	[1]	-2	[1]
Net unrealized holding gains (losses) on securities transferred during the year, pretax	35		-7		4
Net unrealized holding gains transferred during the year, tax	21		-2		2
Amortization of net unrealized holding gains to income during the year, tax	-7	[1]	-1	[1]	-1	[1]
Net unrealized holding gains (losses) on securities transferred during the year, tax	14		-3		2
Net unrealized holding gains transferred during the year, net of tax	34		-2		4
Amortization of net unrealized holding gains to income during the year, net of tax	-12		-2		-1	[1]
Net unrealized holding gains on securities transferred during the year	22		-4		3
Interest rate swaps designated as cash flow hedges:	'		'		'
Net unrealized gains (losses) arising during the year, pretax	'		-1		-36
Pension and post-retirement actuarial losses, pretax	1	[2]	15	[2]	10	[2]
Net unrealized losses on interest rate swaps designated as cash flow hedges, pretax	'		15		-26
Net unrealized gains (losses) arising during the year, tax	'		2		-14
Reclassification adjustment for realized losses included in net income, tax	1	[2]	6	[2]	4	[2]
Net unrealized losses on interest rate swaps designated as cash flow hedges, tax	'		8		-10
Net unrealized gains (losses) arising during the year, net of tax	'		-3		-22
Reclassification adjustment for realized losses included in net income, net of tax	1	[2]	10	[2]	-6
Net unrealized gains (losses) on interest rate swaps designated as cash flow hedges, net of tax	1		7		-16
Pension and post-retirement plans:	'		'		'
Pension and post-retirement actuarial losses, pretax	-40		24		19
Pension and post-retirement actuarial losses, tax	-15		10		8
Pension and postretirement actuarial losses, net of tax	-25		14		11
Total other comprehensive (loss) income, pretax	-154		149		16
Total other comprehensive (loss) income, tax	-59		59		6
Total other comprehensive (loss) income	($95)		$89		$10

[1]	Included in Interest income on investment securities and other in our Consolidated Statement of Income.
[2]	Included in Interest expense on borrowings in our Consolidated Statement of Income.

Other_Comprehensive_Income_Cha

Other Comprehensive Income - Change in Accumulated Other Comprehensive Income (Loss) (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Equity [Abstract]	'	'	'
Reclassification of Pre Tax Net Loss on Cash Flow Hedge from Accumulated Other Comprehensive Income to Earnings	$1	'	'
Accumulated other comprehensive income	'	'	'
Net unrealized gains on securities available for sale, beginning balance	207	105	71
Net unrealized gains (losses) on securities transferred from available for sale to held to maturity, beginning balance	-2	3	0
Unrealized (losses) gains on interest rate swaps designated as cash flow hedges, beginning balance	-6	-13	3
Pension and postretirement plans, beginning balance	-41	-27	-16
Accumulated other comprehensive income, Total, Beginning balance	157	68	58
Net unrealized gains on securities available for sale, period change, net of tax	-143	101	35
Net unrealized gains (losses) on securities transferred from available for sale to held to maturity, period change, net of tax	22	-4	3
Net unrealized gains (losses) on interest rate swaps designated as cash flow hedges arising during the year	1	7	-16
Pension and postretirement plans, period change, net of tax	25	-14	-11
Accumulated other comprehensive (loss) income, period change, net of tax	-95	89	10
Net unrealized gains on securities available for sale, ending balance	64	207	105
Net unrealized gains (losses) on securities transferred from available for sale to held to maturity, ending balance	20	-2	3
Unrealized (losses) gains on interest rate swaps designated as cash flow hedges, ending balance	-6	-6	-13
Pension and postretirement plans, ending balance	-16	-41	-27
Accumulated other comprehensive income, Total, Ending balance	$62	$157	$68

StockBased_Compensation_Stock_

Stock-Based Compensation - Stock Option Activity (Details) (USD $)	12 Months Ended
In Millions, except Share data in Thousands, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012	Dec. 31, 2011
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'		'	'
Options outstanding, beginning balance	11,175		'	'
Granted, number of shares	434		528	288
Exercised, number of shares	-19		'	'
Forfeited, number of shares	-54		'	'
Expired, number of shares	-350		'	'
Options outstanding, ending balance	11,186		11,175	'
Options exercisable, number of shares	10,533		'	'
Options outstanding, weighted average exercise price, beginning of period	$13.65		'	'
Granted, weighted average exercise price	$8.86		$9.84	$13.80
Exercised, weighted average exercise price	$9.84		'	'
Forfeited, weighted average exercise price	$10.70		'	'
Expired, weighted average exercise price	$21.37		'	'
Options outstanding, weighted average exercise price, end of period	$13.23		$13.65	'
Options exercisable, weighted average exercise price	$13.46		'	'
Options outstanding, weighted average remaining contractual term, ending balance	'2 years 8 months		'	'
Options exercisable weighted average remaining contractual term	'2 years 3 months		'	'
Options outstanding, aggregate intrinsic value, ending balance	$1	[1]	'	'
Options exercisable, aggregate intrinsic value	$0	[1]	'	'

[1]	Intrinsic value is the difference between the fair value of our stock at December 31, 2013 and the exercise price of the stock award.

StockBased_Compensation_Nonves

Stock-Based Compensation - Nonvested Stock Option Activity (Details) (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Nonvested stock options	'	'	'
Options outstanding, beginning balance	11,175	'	'
Granted, number of shares	434	528	288
Forfeited, number of shares	-54	'	'
Options outstanding, ending balance	11,186	11,175	'
Granted, weighted average exercise price	$8.86	$9.84	$13.80
Forfeited, weighted average exercise price	$10.70	'	'
Granted, weighted average grant date fair value	$2.36	$2.73	$3.36
Nonvested stock options	'	'	'
Nonvested stock options	'	'	'
Options outstanding, beginning balance	800	'	'
Granted, number of shares	434	'	'
Vested, number of shares	-527	'	'
Forfeited, number of shares	-54	'	'
Options outstanding, ending balance	653	'	'
Options outstanding, weighted average exercise price, beginning of period	$11.25	'	'
Granted, weighted average exercise price	$8.86	'	'
Vested, weighted average exercise price	$11.56	'	'
Forfeited, weighted average exercise price	$10.70	'	'
Options outstanding, weighted average exercise price, end of period	$9.45	'	'
Options outstanding, weighted average grant date fair value, beginning of period	$3	'	'
Granted, weighted average grant date fair value	$2.36	'	'
Vested, weighted average grant date fair value	$3.07	'	'
Forfeited, weighted average grant date fair value	$2.86	'	'
Options outstanding, weighted average grant date fair value, end of period	$2.52	'	'

StockBased_Compensation_Stock_1

Stock-Based Compensation - Stock Options Outstanding (Details) (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Summary of Stock Options Outstanding	'	'	'
Options Outstanding	11,186	11,175	11,408
Options Outstanding, Weighted Average Exercise Price	$13.23	$13.65	$14.04
Weighted Average Remaining Life (Years)	'2 years 8 months	'3 years 6 months	'4 years 2 months
Options Exercisable	10,533	10,375	10,804
Options Exercisable, Weighted Average Exercise Price	$13.46	$13.83	$14.05
Exercise price range 1	'	'	'
Summary of Stock Options Outstanding	'	'	'
Exercise Price Range, Lower Range Limit	$8.86	$9.71	$9.71
Exercise Price Range, Upper Range Limit	$12	$13	$13
Options Outstanding	1,835	2,693	2,569
Options Outstanding, Weighted Average Exercise Price	$10.25	$11.58	$12.04
Weighted Average Remaining Life (Years)	'6 years 9 months	'5 years 7 months	'5 years 4 months
Options Exercisable	1,225	2,165	2,508
Options Exercisable, Weighted Average Exercise Price	$10.80	$12	$12.02
Exercise price range 2	'	'	'
Summary of Stock Options Outstanding	'	'	'
Exercise Price Range, Lower Range Limit	$12.01	$13.01	$13.01
Exercise Price Range, Upper Range Limit	$15	$16	$16
Options Outstanding	9,099	8,168	8,371
Options Outstanding, Weighted Average Exercise Price	$13.20	$13.30	$13.32
Weighted Average Remaining Life (Years)	'1 year 11 months	'2 years 11 months	'3 years 11 months
Options Exercisable	9,056	7,896	7,828
Options Exercisable, Weighted Average Exercise Price	$13.19	$13.28	$13.28
Exercise price range 3	'	'	'
Summary of Stock Options Outstanding	'	'	'
Exercise Price Range, Lower Range Limit	$15.01	$16.01	$16.01
Exercise Price Range, Upper Range Limit	$18	$20	$20
Options Outstanding	42	19	19
Options Outstanding, Weighted Average Exercise Price	$15.25	$16.27	$16.27
Weighted Average Remaining Life (Years)	'6 months	'7 months	'1 year 7 months
Options Exercisable	42	19	19
Options Exercisable, Weighted Average Exercise Price	$15.25	$16.27	$16.27
Exercise price range 4	'	'	'
Summary of Stock Options Outstanding	'	'	'
Exercise Price Range, Lower Range Limit	$18.01	$20.01	$20.01
Exercise Price Range, Upper Range Limit	$57.75	$57.75	$57.75
Options Outstanding	210	295	449
Options Outstanding, Weighted Average Exercise Price	$40.07	$41.96	$38.82
Weighted Average Remaining Life (Years)	'1 year 6 months	'2 years	'2 years 2 months
Options Exercisable	210	295	449
Options Exercisable, Weighted Average Exercise Price	$40.07	$41.96	$38.82

StockBased_Compensation_Stock_2

Stock-Based Compensation - Stock Option Valuation (Details) (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Summary of Stock Options Granted and Weighted Average Assumptions to Compute the Fair Value of the Options	'	'	'
Options granted	434	528	288
Grant date weighted average fair value per stock option	$2.36	$2.73	$3.36
Grant date weighted average share price	$8.86	$9.84	$13.80
Dividend yield	3.61%	3.25%	4.64%
Risk-free interest rate	0.99%	1.26%	2.40%
Expected volatility factor	40.70%	40.36%	39.11%
Expected life (in years)	'5 years 8 months	'5 years 7 months	'5 years 6 months

StockBased_Compensation_Restri

Stock-Based Compensation - Restricted Stock Awards (Details) (Restricted Stock, USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013
Restricted Stock	'
Summary of Restricted Stock Activity [Abstract]	'
Unvested, Number of shares, Beginning Balance	1,270
Unvested, Weighted Average Grant Date Fair Value, Beginning Balance	$10.67
Awarded Number of Shares	1,534
Awarded Weighted Average Grant Date Fair Value	$9.31
Vested Number of Shares	-573
Vested weighted average grant date fair value	$11.01
Forfeited Number of Shares	-128
Forfeited Weighted Average Grant Date Fair Value	$9.54
Unvested, Number of shares, Ending Balance	2,103
Unvested, Weighted Average Grant Date Fair Value, Ending Balance	$9.65

StockBased_Compensation_Detail

Stock-Based Compensation (Details Textual) (USD $)	12 Months Ended
Stock-Based Compensation (Details Textual) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award	'	'	'
Stock-based compensation expenses	$10,000,000	$11,000,000	$8,000,000
Stock held as Treasury Shares	12,060,739	13,381,063	'
Exercise of Stock Options and Restricted Stock Activity, Shares	1,320,324	786,670	932,173
Stock Options	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award	'	'	'
Term of Plan	'10 years	'	'
Vesting period of grants	'3 years	'	'
Intrinsic value of stock options exercised was less than $100,000 in 2013	100,000	0	'
Stock Option Grant	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award	'	'	'
Unrecognized compensation cost related to unvested	1,000,000	'	'
Weighted average period for cost recognition	'1 year 9 months	'	'
Restricted Stock Awards	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award	'	'	'
Unrecognized compensation cost related to unvested	12,000,000	'	'
Weighted average period for cost recognition	'2 years 0 months	'	'
Restricted Stock	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award	'	'	'
Awarded Number of Shares	1,534,000	'	'
Total fair value of restricted stock awards that vested during the period	$5,000,000	$3,000,000	$3,000,000
Restricted Stock Units (RSUs)	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award	'	'	'
Dividend equivalent units earned restricted stock units	4,495	3,020	'
2002 Plan \| Stock Options	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award	'	'	'
Authorized to issue up to common stock for grants of stock options	8,000,000	'	'
Shares available for Grant under the plan	1,000,000	'	'
2012 Plan \| Stock Options	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award	'	'	'
Authorized to issue up to common stock for grants of stock options	7,000,000	'	'
Shares available for Grant under the plan	3,000,000	'	'
Long Term Performance Plan	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award	'	'	'
Awarded Number of Shares	30,000	'	'
Director \| Restricted Stock Plan \| Restricted Stock Awards	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award	'	'	'
Vesting period of grants	'1 year	'	'
Employees \| Restricted Stock Plan \| Restricted Stock Awards	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award	'	'	'
Vesting period of grants	'3 years	'	'

Benefit_Plans_Pension_Plan_Inf

Benefit Plans - Pension Plan Information (Details) (Pension plans [Member], USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Pension plans [Member]	'	'	'
Change in projected benefit obligation:	'	'	'
Projected benefit obligation at beginning of year	$243	$219	'
Service cost	1	1	0
Interest cost	10	11	9
Actuarial (gain) loss	-26	34	'
Benefits paid	-13	-21	'
Projected benefit obligation at end of year	214	243	219
Change in fair value of plan assets:	'	'	'
Fair value of plan assets at beginning of year	276	157	'
Employer contributions	2	112	'
Actual return on plan assets	25	28	'
Benefits paid	-13	-21	'
Fair value of plan assets at end of year	290	276	157
Overfunded status at year end	$76	$33	'

Benefit_Plans_Net_Pension_Cost

Benefit Plans - Net Pension Cost (Details) (Pension plans [Member], USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Pension plans [Member]	'	'	'
Net pension cost	'	'	'
Service cost	$1	$1	$0
Interest cost	10	11	9
Expected return on plan assets	-16	-14	-7
Amortization of unrecognized loss	3	2	1
Settlement credit	0	0	-9
Net periodic pension (gain)	($2)	($2)	($6)

Benefit_Plans_Pension_Change_i

Benefit Plans - Pension Change in Assets and Benefit Obligations OCI (Details) (Pension plans [Member], USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Pension plans [Member]	'	'
Change in plan assets and benefit obligation recognized in other comprehensive income	'	'
Net (gain) loss	($38)	$26
Total (gain) loss recognized in other comprehensive income	-38	26
Total recognized in net periodic pension cost and other comprehensive income	($40)	$24

Benefit_Plans_Pension_Actuaria

Benefit Plans - Pension Actuarial Assumptions (Details) (Pension plans [Member])	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Pension plans [Member]	'	'	'
Projected benefit obligation:	'	'	'
Discount rate	5.02%	4.04%	5.11%
Net periodic pension cost:	'	'	'
Discount rate	4.07%	5.16%	5.48%
Expected long-term rate of return on plan assets	5.89%	5.86%	5.00%

Benefit_Plans_Pension_Fair_Val

Benefit Plans - Pension Fair Value Hierarchy (Details) (Pension plans [Member], USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of the plan's assets by assets category	$290	$276	$157
Fair Value, Measurements, Recurring [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of the plan's assets by assets category	290	276	'
Fair Value, Measurements, Recurring [Member] \| Cash \| Cash	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of the plan's assets by assets category	43	52	'
Fair Value, Measurements, Recurring [Member] \| Equity Securities \| First Niagara Financial Group, Inc. common stock	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of the plan's assets by assets category	1	'	'
Fair Value, Measurements, Recurring [Member] \| Equity Securities \| U.S. Companies	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of the plan's assets by assets category	32	24	'
Fair Value, Measurements, Recurring [Member] \| Equity Securities \| International companies	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of the plan's assets by assets category	2	2	'
Fair Value, Measurements, Recurring [Member] \| Fixed Income Securities \| Corporate Bonds	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of the plan's assets by assets category	4	5	'
Fair Value, Measurements, Recurring [Member] \| Exchange Traded Funds \| Large cap growth	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of the plan's assets by assets category	15	12	'
Fair Value, Measurements, Recurring [Member] \| Exchange Traded Funds \| Large cap value	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of the plan's assets by assets category	9	6	'
Fair Value, Measurements, Recurring [Member] \| Exchange Traded Funds \| Foreign large cap blend	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of the plan's assets by assets category	3	2	'
Fair Value, Measurements, Recurring [Member] \| Exchange Traded Funds \| Small and mid cap blend	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of the plan's assets by assets category	2	2	'
Fair Value, Measurements, Recurring [Member] \| Exchange Traded Funds \| Intermediate term bond	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of the plan's assets by assets category	'	4	'
Fair Value, Measurements, Recurring [Member] \| Exchange Traded Funds \| Diversified emerging markets	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of the plan's assets by assets category	'	1	'
Fair Value, Measurements, Recurring [Member] \| Mutual Fund Investments \| Intermediate term bond	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of the plan's assets by assets category	58	60	'
Fair Value, Measurements, Recurring [Member] \| Mutual Fund Investments \| Diversified emerging markets	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of the plan's assets by assets category	5	3	'
Fair Value, Measurements, Recurring [Member] \| Mutual Fund Investments \| Foreign large value and blend	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of the plan's assets by assets category	14	14	'
Fair Value, Measurements, Recurring [Member] \| Mutual Fund Investments \| Small and midcap growth and blend	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of the plan's assets by assets category	11	8	'
Fair Value, Measurements, Recurring [Member] \| Mutual Fund Investments \| Mortgage-backed securities	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of the plan's assets by assets category	7	7	'
Fair Value, Measurements, Recurring [Member] \| Mutual Fund Investments \| Large blend	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of the plan's assets by assets category	26	18	'
Fair Value, Measurements, Recurring [Member] \| Mutual Fund Investments \| Total return investment grade securities	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of the plan's assets by assets category	41	42	'
Fair Value, Measurements, Recurring [Member] \| Mutual Fund Investments \| Real estate	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of the plan's assets by assets category	3	3	'
Fair Value, Measurements, Recurring [Member] \| Mutual Fund Investments \| High yield bond	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of the plan's assets by assets category	9	5	'
Fair Value, Measurements, Recurring [Member] \| Mutual Fund Investments \| World bond	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of the plan's assets by assets category	4	4	'
Fair Value, Measurements, Recurring [Member] \| Level 1 [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of the plan's assets by assets category	286	271	'
Fair Value, Measurements, Recurring [Member] \| Level 1 [Member] \| Cash \| Cash	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of the plan's assets by assets category	43	52	'
Fair Value, Measurements, Recurring [Member] \| Level 1 [Member] \| Equity Securities \| First Niagara Financial Group, Inc. common stock	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of the plan's assets by assets category	1	'	'
Fair Value, Measurements, Recurring [Member] \| Level 1 [Member] \| Equity Securities \| U.S. Companies	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of the plan's assets by assets category	32	24	'
Fair Value, Measurements, Recurring [Member] \| Level 1 [Member] \| Equity Securities \| International companies	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of the plan's assets by assets category	2	2	'
Fair Value, Measurements, Recurring [Member] \| Level 1 [Member] \| Exchange Traded Funds \| Large cap growth	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of the plan's assets by assets category	15	12	'
Fair Value, Measurements, Recurring [Member] \| Level 1 [Member] \| Exchange Traded Funds \| Large cap value	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of the plan's assets by assets category	9	6	'
Fair Value, Measurements, Recurring [Member] \| Level 1 [Member] \| Exchange Traded Funds \| Foreign large cap blend	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of the plan's assets by assets category	3	2	'
Fair Value, Measurements, Recurring [Member] \| Level 1 [Member] \| Exchange Traded Funds \| Small and mid cap blend	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of the plan's assets by assets category	2	2	'
Fair Value, Measurements, Recurring [Member] \| Level 1 [Member] \| Exchange Traded Funds \| Intermediate term bond	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of the plan's assets by assets category	'	4	'
Fair Value, Measurements, Recurring [Member] \| Level 1 [Member] \| Exchange Traded Funds \| Diversified emerging markets	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of the plan's assets by assets category	'	1	'
Fair Value, Measurements, Recurring [Member] \| Level 1 [Member] \| Mutual Fund Investments \| Intermediate term bond	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of the plan's assets by assets category	58	60	'
Fair Value, Measurements, Recurring [Member] \| Level 1 [Member] \| Mutual Fund Investments \| Diversified emerging markets	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of the plan's assets by assets category	5	3	'
Fair Value, Measurements, Recurring [Member] \| Level 1 [Member] \| Mutual Fund Investments \| Foreign large value and blend	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of the plan's assets by assets category	14	14	'
Fair Value, Measurements, Recurring [Member] \| Level 1 [Member] \| Mutual Fund Investments \| Small and midcap growth and blend	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of the plan's assets by assets category	11	8	'
Fair Value, Measurements, Recurring [Member] \| Level 1 [Member] \| Mutual Fund Investments \| Mortgage-backed securities	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of the plan's assets by assets category	7	7	'
Fair Value, Measurements, Recurring [Member] \| Level 1 [Member] \| Mutual Fund Investments \| Large blend	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of the plan's assets by assets category	26	18	'
Fair Value, Measurements, Recurring [Member] \| Level 1 [Member] \| Mutual Fund Investments \| Total return investment grade securities	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of the plan's assets by assets category	41	42	'
Fair Value, Measurements, Recurring [Member] \| Level 1 [Member] \| Mutual Fund Investments \| Real estate	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of the plan's assets by assets category	3	3	'
Fair Value, Measurements, Recurring [Member] \| Level 1 [Member] \| Mutual Fund Investments \| High yield bond	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of the plan's assets by assets category	9	5	'
Fair Value, Measurements, Recurring [Member] \| Level 1 [Member] \| Mutual Fund Investments \| World bond	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of the plan's assets by assets category	4	4	'
Fair Value, Measurements, Recurring [Member] \| Level 2 [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of the plan's assets by assets category	4	5	'
Fair Value, Measurements, Recurring [Member] \| Level 2 [Member] \| Fixed Income Securities \| Corporate Bonds	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Fair value of the plan's assets by assets category	$4	$5	'

Benefit_Plans_Pension_Estimate

Benefit Plans - Pension Estimated Benefit Payments(Details) (Pension plans [Member], USD $)	Dec. 31, 2013
In Millions, unless otherwise specified	Dec. 31, 2013
Pension plans [Member]	'
Estimated benefit payment under pension plan	'
2014	$13
2015	13
2016	13
2017	13
2018	14
2019-2023	$70

Benefit_Plans_OPEB_Change_in_B

Benefit Plans - OPEB Change in Benefit Obligation (Details) (Other Post-retirement Benefits, USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Other Post-retirement Benefits	'	'	'
Change in accumulated post-retirement benefit obligation [Roll Forward]	'	'	'
Projected benefit obligation at beginning of year	$13	$15	'
Interest cost	1	1	1
Actuarial (gain) loss	-3	-1	'
Curtailments	0	-1	'
Benefits paid	-1	-1	'
Projected benefit obligation at end of year	10	13	15
Overfunded (underfunded) status at year end	($10)	($13)	'

Benefit_Plans_OPEB_Benefit_Cos

Benefit Plans - OPEB Benefit Cost (Details) (Other Post-retirement Benefits, USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Other Post-retirement Benefits	'	'	'
Components of net periodic post-retirement benefit cost	'	'	'
Interest cost	$1	$1	$1
Total periodic post-retirement cost	$0	$1	$1

Benefit_Plans_OPEB_OCI_Details

Benefit Plans - OPEB OCI (Details) (Other Post-retirement Benefits, USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Other Post-retirement Benefits	'	'
Change in plan benefit obligation recognized in other comprehensive income	'	'
Net (gain) loss	($3)	($2)
Total (gain) loss recognized in other comprehensive income	-3	-2
Total recognized in net periodic pension cost and other comprehensive income	($2)	($1)

Benefit_Plans_OPEB_Actuarial_A

Benefit Plans - OPEB Actuarial Assumptions (Details) (Other Post-retirement Benefits)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Other Post-retirement Benefits	'	'	'
Accumulated Post Retirement Benefit Obligation	'	'	'
Discount rate	4.87%	3.89%	5.19%
Total Periodic Cost	'	'	'
Discount rate	3.89%	5.19%	5.36%

Benefit_Plans_OPEB_Estimated_B

Benefit Plans - OPEB Estimated Benefit Payments (Details) (Other Post-retirement Benefits, USD $)	Dec. 31, 2013
In Millions, unless otherwise specified	Dec. 31, 2013
Other Post-retirement Benefits	'
Estimated benefit payment under pension plan	'
2014	$1
2015	1
2016	1
2017	1
2018	1
2019-2023	$4

Benefit_Plans_Pension_and_OPEB

Benefit Plans - Pension and OPEB Statement of Condition (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Accumulated other comprehensive loss (income), net of taxes:	'	'	'	'
Pension and Post-retirement benefit plan	$16	$41	$27	$16
Pension plans	'	'	'	'
Other Assets:	'	'	'	'
Fair value of plan assets in excess of projected benefit obligation	76	33	'	'
Accumulated other comprehensive loss (income), net of taxes:	'	'	'	'
Pension and Post-retirement benefit plan	19	42	'	'
Other Post-retirement Benefits	'	'	'	'
Other Liabilities:	'	'	'	'
Accumulated post-retirement benefit obligation	10	13	'	'
Accumulated other comprehensive loss (income), net of taxes:	'	'	'	'
Pension and Post-retirement benefit plan	($2)	($1)	'	'

Benefit_Plans_Details_Textual

Benefit Plans (Details Textual) (USD $)

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2010

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

In Millions, unless otherwise specified

Pension plans

SERPs

Plan 401 k

First Niagara Plan

New Alliance Plan

Benefit_Plans_Details_Textual_

Benefit Plans (Details Textual 1) (USD $)	12 Months Ended
In Millions, except Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Benefit Plans (Textual) [Abstract]	'	'	'
Common stock held by employee stock ownership plan, shares	2,001,373	2,179,315	'
Employee Stock Ownership Plan (ESOP)	'	'	'
Benefit Plans (Textual) [Abstract]	'	'	'
Annual loan payable installments years	'30 years	'	'
Compensation expense	$1	$2	$2
Shares allocated to participants	178,000	178,000	265,000
Common stock held by employee stock ownership plan, shares	2,000,000	2,000,000	'
Amount of allocated shares held by ESOP	2,000,000	2,000,000	'
Fair value of unallocated ESOP shares	$21	$17	'

Fair_Value_Measurements_Fair_V

Fair Value Measurements - Fair Value Option on Loans Held for Sale (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Loans held for sale	'	'
Fair value carrying amount	$50	$155
Aggregate unpaid principal balance	1	149
Fair value carrying amount less aggregate unpaid principal balance	$49	$5

Fair_Value_Measurements_Fair_V1

Fair Value Measurements - Fair Value, Assets and Liabilities Measured on Recurring Basis (Details) (USD $)	Dec. 31, 2013		Dec. 31, 2012
In Millions, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012
Assets:	'		'
Investment securities available for sale	$7,423		$10,994
Loans held for sale	50		155
Debt securities [Member]	'		'
Assets:	'		'
Investment securities available for sale	1,734		1,889
Residential mortgage-backed securities [Member]	'		'
Assets:	'		'
Investment securities available for sale	1,490		4,513
Collateralized mortgage obligations [Member]	'		'
Assets:	'		'
Investment securities available for sale	1,152		3,674
Commercial mortgage-backed securities, non-agency issued [Member]	'		'
Assets:	'		'
Investment securities available for sale	1,831		2,060
Mortgage-backed securities [Member]	'		'
Assets:	'		'
Investment securities available for sale	3,321		6,573
Collateralized loan obligations, non-agency issued [Member]	'		'
Assets:	'		'
Investment securities available for sale	1,431		1,545
States and political subdivisions [Member] \| Debt securities [Member]	'		'
Assets:	'		'
Investment securities available for sale	529		608
U.S. Treasury [Member] \| Debt securities [Member]	'		'
Assets:	'		'
Investment securities available for sale	20		21
U.S. government sponsored enterprises [Member] \| Debt securities [Member]	'		'
Assets:	'		'
Investment securities available for sale	308		404
Corporate [Member] \| Debt securities [Member]	'		'
Assets:	'		'
Investment securities available for sale	868		837
Trust preferred securities [Member] \| Debt securities [Member]	'		'
Assets:	'		'
Investment securities available for sale	4		14
Government National Mortgage Association [Member] \| Residential mortgage-backed securities [Member]	'		'
Assets:	'		'
Investment securities available for sale	40		70
Government National Mortgage Association [Member] \| Collateralized mortgage obligations [Member]	'		'
Assets:	'		'
Investment securities available for sale	'		1,091
Federal National Mortgage Association [Member] \| Residential mortgage-backed securities [Member]	'		'
Assets:	'		'
Investment securities available for sale	139		414
Federal National Mortgage Association [Member] \| Collateralized mortgage obligations [Member]	'		'
Assets:	'		'
Investment securities available for sale	761		1,474
Federal Home Loan Mortgage Corporation [Member] \| Residential mortgage-backed securities [Member]	'		'
Assets:	'		'
Investment securities available for sale	159		355
Federal Home Loan Mortgage Corporation [Member] \| Collateralized mortgage obligations [Member]	'		'
Assets:	'		'
Investment securities available for sale	379		1,047
Non-agency issued [Member] \| Collateralized mortgage obligations [Member]	'		'
Assets:	'		'
Investment securities available for sale	13		61
Fair Value, Measurements, Recurring [Member]	'		'
Assets:	'		'
Investment securities available for sale	7,423		10,994
Loans held for sale	50	[1]	155	[1]
Derivatives	49		102
Total assets	7,522		11,250
Liabilities:	'		'
Derivatives	50		105
Fair Value, Measurements, Recurring [Member] \| Debt securities [Member]	'		'
Assets:	'		'
Investment securities available for sale	1,734		1,889
Fair Value, Measurements, Recurring [Member] \| Residential mortgage-backed securities [Member]	'		'
Assets:	'		'
Investment securities available for sale	1,490		4,513
Fair Value, Measurements, Recurring [Member] \| Collateralized mortgage obligations [Member]	'		'
Assets:	'		'
Investment securities available for sale	1,152		3,674
Fair Value, Measurements, Recurring [Member] \| Mortgage-backed securities [Member]	'		'
Assets:	'		'
Investment securities available for sale	3,321		6,573
Fair Value, Measurements, Recurring [Member] \| Collateralized loan obligations, non-agency issued [Member]	'		'
Assets:	'		'
Investment securities available for sale	1,431		1,545
Fair Value, Measurements, Recurring [Member] \| States and political subdivisions [Member] \| Debt securities [Member]	'		'
Assets:	'		'
Investment securities available for sale	529		608
Fair Value, Measurements, Recurring [Member] \| U.S. Treasury [Member] \| Debt securities [Member]	'		'
Assets:	'		'
Investment securities available for sale	20		21
Fair Value, Measurements, Recurring [Member] \| U.S. government agencies [Member] \| Debt securities [Member]	'		'
Assets:	'		'
Investment securities available for sale	4		5
Fair Value, Measurements, Recurring [Member] \| U.S. government sponsored enterprises [Member] \| Debt securities [Member]	'		'
Assets:	'		'
Investment securities available for sale	308		404
Fair Value, Measurements, Recurring [Member] \| Corporate [Member] \| Debt securities [Member]	'		'
Assets:	'		'
Investment securities available for sale	868		837
Fair Value, Measurements, Recurring [Member] \| Trust preferred securities [Member] \| Debt securities [Member]	'		'
Assets:	'		'
Investment securities available for sale	4		14
Fair Value, Measurements, Recurring [Member] \| Government National Mortgage Association [Member] \| Residential mortgage-backed securities [Member]	'		'
Assets:	'		'
Investment securities available for sale	40		70
Fair Value, Measurements, Recurring [Member] \| Government National Mortgage Association [Member] \| Collateralized mortgage obligations [Member]	'		'
Assets:	'		'
Investment securities available for sale	'		1,091
Fair Value, Measurements, Recurring [Member] \| Federal National Mortgage Association [Member] \| Residential mortgage-backed securities [Member]	'		'
Assets:	'		'
Investment securities available for sale	139		414
Fair Value, Measurements, Recurring [Member] \| Federal National Mortgage Association [Member] \| Collateralized mortgage obligations [Member]	'		'
Assets:	'		'
Investment securities available for sale	761		1,474
Fair Value, Measurements, Recurring [Member] \| Federal Home Loan Mortgage Corporation [Member] \| Residential mortgage-backed securities [Member]	'		'
Assets:	'		'
Investment securities available for sale	159		355
Fair Value, Measurements, Recurring [Member] \| Federal Home Loan Mortgage Corporation [Member] \| Collateralized mortgage obligations [Member]	'		'
Assets:	'		'
Investment securities available for sale	379		1,047
Fair Value, Measurements, Recurring [Member] \| Collateralized Mortgage Obligations, non-agency issued [Member] \| Collateralized mortgage obligations [Member]	'		'
Assets:	'		'
Investment securities available for sale	13		61
Fair Value, Measurements, Recurring [Member] \| Non-agency issued [Member] \| Commercial mortgage-backed securities, non-agency issued [Member]	'		'
Assets:	'		'
Investment securities available for sale	1,831		2,060
Fair Value, Measurements, Recurring [Member] \| Asset-backed securities [Member]	'		'
Assets:	'		'
Investment securities available for sale	905		956
Fair Value, Measurements, Recurring [Member] \| Asset-backed securities [Member] \| Student loans [Member]	'		'
Assets:	'		'
Investment securities available for sale	312		390
Fair Value, Measurements, Recurring [Member] \| Asset-backed securities [Member] \| Credit cards [Member]	'		'
Assets:	'		'
Investment securities available for sale	73		75
Fair Value, Measurements, Recurring [Member] \| Asset-backed securities [Member] \| Auto loans [Member]	'		'
Assets:	'		'
Investment securities available for sale	335		372
Fair Value, Measurements, Recurring [Member] \| Asset-backed securities [Member] \| Other Loans [Member]	'		'
Assets:	'		'
Investment securities available for sale	186		119
Fair Value, Measurements, Recurring [Member] \| Other securities [Member]	'		'
Assets:	'		'
Investment securities available for sale	33		31
Fair Value, Measurements, Recurring [Member] \| Level 1 [Member]	'		'
Assets:	'		'
Investment securities available for sale	43		44
Total assets	43		44
Fair Value, Measurements, Recurring [Member] \| Level 1 [Member] \| Debt securities [Member]	'		'
Assets:	'		'
Investment securities available for sale	20		21
Fair Value, Measurements, Recurring [Member] \| Level 1 [Member] \| U.S. Treasury [Member] \| Debt securities [Member]	'		'
Assets:	'		'
Investment securities available for sale	20		21
Fair Value, Measurements, Recurring [Member] \| Level 1 [Member] \| Other securities [Member]	'		'
Assets:	'		'
Investment securities available for sale	22		23
Fair Value, Measurements, Recurring [Member] \| Level 2 [Member]	'		'
Assets:	'		'
Investment securities available for sale	7,376		9,391
Loans held for sale	50	[1]	155	[1]
Derivatives	49		102
Total assets	7,476		9,647
Liabilities:	'		'
Derivatives	50		105
Fair Value, Measurements, Recurring [Member] \| Level 2 [Member] \| Debt securities [Member]	'		'
Assets:	'		'
Investment securities available for sale	1,709		1,854
Fair Value, Measurements, Recurring [Member] \| Level 2 [Member] \| Residential mortgage-backed securities [Member]	'		'
Assets:	'		'
Investment securities available for sale	1,490		4,513
Fair Value, Measurements, Recurring [Member] \| Level 2 [Member] \| Collateralized mortgage obligations [Member]	'		'
Assets:	'		'
Investment securities available for sale	1,152		3,674
Fair Value, Measurements, Recurring [Member] \| Level 2 [Member] \| Mortgage-backed securities [Member]	'		'
Assets:	'		'
Investment securities available for sale	3,321		6,573
Fair Value, Measurements, Recurring [Member] \| Level 2 [Member] \| Collateralized loan obligations, non-agency issued [Member]	'		'
Assets:	'		'
Investment securities available for sale	1,431		'
Fair Value, Measurements, Recurring [Member] \| Level 2 [Member] \| States and political subdivisions [Member] \| Debt securities [Member]	'		'
Assets:	'		'
Investment securities available for sale	529		608
Fair Value, Measurements, Recurring [Member] \| Level 2 [Member] \| U.S. government agencies [Member] \| Debt securities [Member]	'		'
Assets:	'		'
Investment securities available for sale	4		5
Fair Value, Measurements, Recurring [Member] \| Level 2 [Member] \| U.S. government sponsored enterprises [Member] \| Debt securities [Member]	'		'
Assets:	'		'
Investment securities available for sale	308		404
Fair Value, Measurements, Recurring [Member] \| Level 2 [Member] \| Corporate [Member] \| Debt securities [Member]	'		'
Assets:	'		'
Investment securities available for sale	868		837
Fair Value, Measurements, Recurring [Member] \| Level 2 [Member] \| Government National Mortgage Association [Member] \| Residential mortgage-backed securities [Member]	'		'
Assets:	'		'
Investment securities available for sale	40		70
Fair Value, Measurements, Recurring [Member] \| Level 2 [Member] \| Government National Mortgage Association [Member] \| Collateralized mortgage obligations [Member]	'		'
Assets:	'		'
Investment securities available for sale	'		1,091
Fair Value, Measurements, Recurring [Member] \| Level 2 [Member] \| Federal National Mortgage Association [Member] \| Residential mortgage-backed securities [Member]	'		'
Assets:	'		'
Investment securities available for sale	139		414
Fair Value, Measurements, Recurring [Member] \| Level 2 [Member] \| Federal National Mortgage Association [Member] \| Collateralized mortgage obligations [Member]	'		'
Assets:	'		'
Investment securities available for sale	761		1,474
Fair Value, Measurements, Recurring [Member] \| Level 2 [Member] \| Federal Home Loan Mortgage Corporation [Member] \| Residential mortgage-backed securities [Member]	'		'
Assets:	'		'
Investment securities available for sale	159		355
Fair Value, Measurements, Recurring [Member] \| Level 2 [Member] \| Federal Home Loan Mortgage Corporation [Member] \| Collateralized mortgage obligations [Member]	'		'
Assets:	'		'
Investment securities available for sale	379		1,047
Fair Value, Measurements, Recurring [Member] \| Level 2 [Member] \| Collateralized Mortgage Obligations, non-agency issued [Member] \| Collateralized mortgage obligations [Member]	'		'
Assets:	'		'
Investment securities available for sale	13		61
Fair Value, Measurements, Recurring [Member] \| Level 2 [Member] \| Non-agency issued [Member] \| Commercial mortgage-backed securities, non-agency issued [Member]	'		'
Assets:	'		'
Investment securities available for sale	1,831		2,060
Fair Value, Measurements, Recurring [Member] \| Level 2 [Member] \| Asset-backed securities [Member]	'		'
Assets:	'		'
Investment securities available for sale	905		956
Fair Value, Measurements, Recurring [Member] \| Level 2 [Member] \| Asset-backed securities [Member] \| Student loans [Member]	'		'
Assets:	'		'
Investment securities available for sale	312		390
Fair Value, Measurements, Recurring [Member] \| Level 2 [Member] \| Asset-backed securities [Member] \| Credit cards [Member]	'		'
Assets:	'		'
Investment securities available for sale	73		75
Fair Value, Measurements, Recurring [Member] \| Level 2 [Member] \| Asset-backed securities [Member] \| Auto loans [Member]	'		'
Assets:	'		'
Investment securities available for sale	335		372
Fair Value, Measurements, Recurring [Member] \| Level 2 [Member] \| Asset-backed securities [Member] \| Other Loans [Member]	'		'
Assets:	'		'
Investment securities available for sale	186		119
Fair Value, Measurements, Recurring [Member] \| Level 2 [Member] \| Other securities [Member]	'		'
Assets:	'		'
Investment securities available for sale	10		8
Fair Value, Measurements, Recurring [Member] \| Level 3 [Member]	'		'
Assets:	'		'
Investment securities available for sale	4		1,559
Total assets	4		1,559
Fair Value, Measurements, Recurring [Member] \| Level 3 [Member] \| Debt securities [Member]	'		'
Assets:	'		'
Investment securities available for sale	4		14
Fair Value, Measurements, Recurring [Member] \| Level 3 [Member] \| Collateralized loan obligations, non-agency issued [Member]	'		'
Assets:	'		'
Investment securities available for sale	'		1,545
Fair Value, Measurements, Recurring [Member] \| Level 3 [Member] \| Trust preferred securities [Member] \| Debt securities [Member]	'		'
Assets:	'		'
Investment securities available for sale	$4		$14

[1]	Represents loans for which we have elected the fair value option

Fair_Value_Measurements_Fair_V2

Fair Value Measurements - Fair Value, Assets and Liabilities Measured on Nonrecurring Basis (Details) (Fair Value, Measurements, Nonrecurring [Member], USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Summary of assets and liabilities measured at fair value on a nonrecurring basis	'	'
Collateral dependent impaired loans	$32	$48
Level 1 [Member]	'	'
Summary of assets and liabilities measured at fair value on a nonrecurring basis	'	'
Collateral dependent impaired loans	0	0
Level 2 [Member]	'	'
Summary of assets and liabilities measured at fair value on a nonrecurring basis	'	'
Collateral dependent impaired loans	20	31
Level 3 [Member]	'	'
Summary of assets and liabilities measured at fair value on a nonrecurring basis	'	'
Collateral dependent impaired loans	12	17
Collateral Dependent Impaired Loans [Member]	'	'
Summary of assets and liabilities measured at fair value on a nonrecurring basis	'	'
Total gains (losses)	($2)	($2)

Fair_Value_Measurements_Change

Fair Value Measurements - Change in Level 3 Assets Measured on Recurring Basis (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012
Changes in Level 3 assets and liabilities measured at estimated fair value on a recurring basis [Roll Forward]	'		'
Balance at beginning of period	$1,559		$25
Transfers between level 2 and level 3	-1,545	[1]	158	[1]
Purchases	0		1,352
Settlements	-10		-14
Gains included in other comprehensive income	1		38
Losses included in earnings	-1		0
Balance at end of period	4		1,559
Trust preferred securities [Member]	'		'
Changes in Level 3 assets and liabilities measured at estimated fair value on a recurring basis [Roll Forward]	'		'
Balance at beginning of period	14		25
Transfers between level 2 and level 3	0	[1]	0	[1]
Settlements	-10		-14
Gains included in other comprehensive income	1		3
Losses included in earnings	-1		0
Balance at end of period	4		14
Collateralized loan obligations [Member]	'		'
Changes in Level 3 assets and liabilities measured at estimated fair value on a recurring basis [Roll Forward]	'		'
Balance at beginning of period	1,545		0
Transfers between level 2 and level 3	-1,545	[1]	158	[1]
Purchases	0		1,352
Settlements	0		0
Gains included in other comprehensive income	0		35
Losses included in earnings	0		0
Balance at end of period	$0		$1,545

[1]	Our policy is to recognize the transfer at the beginning of the period.

Fair_Value_Measurements_Level_

Fair Value Measurements - Level 3 Fair Value Measurements Valuation Techniques and Inputs (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2012
Collateralized loan obligations, non-agency issued [Member] \| Level 3 [Member]	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'
Valuation techniques	'Internally modeled
Unobservable input	'Market spreads
Collateralized loan obligations, non-agency issued [Member] \| Level 3 [Member] \| Minimum [Member]	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'
Spreads	150
Collateralized loan obligations, non-agency issued [Member] \| Level 3 [Member] \| Maximum [Member]	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'
Spreads	550
Collateralized loan obligations, non-agency issued [Member] \| Level 3 [Member] \| Weighted Average [Member]	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'
Spreads	213
Collateralized loan obligations, non-agency issued [Member]	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'
Available for sale securities broker price adjusted	1,545

Fair_Value_Measurements_Fair_V3

Fair Value Measurements - Fair Value of Financial Instruments by Balance Sheet Grouping (Details) (USD $)	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011	Dec. 31, 2010
In Millions, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011	Dec. 31, 2010
Financial assets:	'		'		'	'
Cash and cash equivalents	$463		$431		$837	$214
Investment securities available for sale	7,423		10,994		'	'
Investment securities held to maturity	3,988		1,374		'	'
Federal Home Loan Bank and Federal Reserve Bank common stock	469		420		'	'
Loans held for sale	50		155		94	'
Carrying (Reported) Amount, Fair Value Disclosure [Member] \| Level 1 [Member]	'		'		'	'
Financial assets:	'		'		'	'
Cash and cash equivalents	463		431		'	'
Carrying (Reported) Amount, Fair Value Disclosure [Member] \| Fair value inputs level 1, 2, 3 [Member]	'		'		'	'
Financial assets:	'		'		'	'
Investment securities available for sale	7,423	[1]	10,994	[1]	'	'
Carrying (Reported) Amount, Fair Value Disclosure [Member] \| Level 2 [Member]	'		'		'	'
Financial assets:	'		'		'	'
Investment securities held to maturity	4,042		1,300		'	'
Federal Home Loan Bank and Federal Reserve Bank common stock	469		420		'	'
Loans held for sale	50		155		'	'
Derivatives	49		102		'	'
Accrued interest receivable	103		108		'	'
Financial liabilities:	'		'		'	'
Deposits	26,665		27,677		'	'
Borrowings	5,556		3,716		'	'
Derivatives	50		105		'	'
Accrued interest payable	10		10		'	'
Carrying (Reported) Amount, Fair Value Disclosure [Member] \| Fair value inputs level 2, 3 [Member]	'		'		'	'
Financial assets:	'		'		'	'
Loans and leases, net	21,230	[2]	19,547	[2]	'	'
Estimate of Fair Value, Fair Value Disclosure [Member] \| Level 1 [Member]	'		'		'	'
Financial assets:	'		'		'	'
Cash and cash equivalents	463		431		'	'
Estimate of Fair Value, Fair Value Disclosure [Member] \| Fair value inputs level 1, 2, 3 [Member]	'		'		'	'
Financial assets:	'		'		'	'
Investment securities available for sale	7,423	[1]	10,994	[1]	'	'
Estimate of Fair Value, Fair Value Disclosure [Member] \| Level 2 [Member]	'		'		'	'
Financial assets:	'		'		'	'
Investment securities held to maturity	3,988		1,374		'	'
Federal Home Loan Bank and Federal Reserve Bank common stock	469		420		'	'
Loans held for sale	50		155		'	'
Derivatives	49		102		'	'
Accrued interest receivable	103		108		'	'
Financial liabilities:	'		'		'	'
Deposits	26,695		27,852		'	'
Borrowings	5,599		3,774		'	'
Derivatives	50		105		'	'
Accrued interest payable	10		10		'	'
Estimate of Fair Value, Fair Value Disclosure [Member] \| Fair value inputs level 2, 3 [Member]	'		'		'	'
Financial assets:	'		'		'	'
Loans and leases, net	$21,774	[2]	$20,213	[2]	'	'

[1]	For a detailed breakout of our investment securities available for sale, refer to our table of recurring fair value measurements.
[2]	Loans and leases classified as level 2 are made up of $20 million and $31 million of collateral dependent impaired loans without significant adjustments made to appraised values at December 31, 2013 and 2012, respectively. All other loans and leases are classified as level 3.

Fair_Value_Measurements_Detail

Fair Value Measurements (Details Textual) (USD $)	12 Months Ended
Fair Value Measurements (Details Textual) (USD $)	Dec. 31, 2013	Dec. 31, 2012
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Investment securities price at broker quotes	$1,400,000,000	'
Investment Securities Internally Priced	68,000,000	'
Loans held for sale, nonaccrual or 90 or more days past due	0	0
Maximum days for completion of appraisals or evaluations for assets	'90 days	'
Original maturity period for cash and cash equivalents (3 months or less)	'3 months	'
Fair Value, Measurements, Nonrecurring [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Collateral dependent impaired loans fair value disclosure	32,000,000	48,000,000
Fair Value, Measurements, Nonrecurring [Member] \| Collateral Dependent Impaired Loans [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Net increase in allowance for credit losses	2,000,000	2,000,000
Fair Value, Inputs, Level 2 [Member] \| Fair Value, Measurements, Nonrecurring [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Collateral dependent impaired loans fair value disclosure	20,000,000	31,000,000
Fair Value, Inputs, Level 3 [Member] \| Fair Value, Measurements, Nonrecurring [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Collateral dependent impaired loans fair value disclosure	$12,000,000	$17,000,000

Segment_Information_Details

Segment Information (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
	Segment	Dec. 31, 2012	Dec. 31, 2011
Segment Reporting Information [Line Items]	'	'	'
Number of Reportable Segments	2	'	'
Financial information of business segments	'	'	'
Net interest income	$1,093	$1,023	$881
Provision for credit losses	105	92	58
Net interest income after provision for credit losses	988	931	823
Noninterest income	366	360	245
Amortization of intangibles	40	45	26
Other noninterest expense	891	1,006	781
Income before income taxes	423	239	262
Income tax benefit	128	71	88
Net income	295	168	174
Banking [Member]	'	'	'
Financial information of business segments	'	'	'
Net interest income	1,093	1,023	881
Provision for credit losses	105	92	58
Net interest income after provision for credit losses	988	931	823
Noninterest income	298	291	180
Amortization of intangibles	37	41	21
Other noninterest expense	839	955	728
Income before income taxes	411	227	254
Income tax benefit	123	66	85
Net income	288	161	169
Financial services [Member]	'	'	'
Financial information of business segments	'	'	'
Net interest income	0	0	0
Provision for credit losses	0	0	0
Net interest income after provision for credit losses	0	0	0
Noninterest income	67	68	65
Amortization of intangibles	3	4	5
Other noninterest expense	52	51	53
Income before income taxes	12	13	8
Income tax benefit	5	5	3
Net income	$7	$8	$5

Condensed_Parent_Company_Only_2

Condensed Parent Company Only Balance Sheet (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
ASSETS	'	'	'	'
Cash and cash equivalents	$463	$431	$837	$214
Investment securities available for sale	7,423	10,994	'	'
Deferred taxes	77	-5	'	'
Other assets	574	527	'	'
Total assets	37,628	36,806	'	'
LIABILITIES AND STOCKHOLDERSâ€™ EQUITY	'	'	'	'
Stockholders equity	4,993	4,927	4,798	2,765
Total liabilities and stockholdersâ€™ equity	37,628	36,806	'	'
Parent Company	'	'	'	'
ASSETS	'	'	'	'
Cash and cash equivalents	390	415	514	543
Investment securities available for sale	3	2	'	'
Loan receivable from ESOP	21	22	'	'
Investment in subsidiary	5,255	5,166	'	'
Deferred taxes	34	16	'	'
Other assets	13	34	'	'
Total assets	5,715	5,655	'	'
LIABILITIES AND STOCKHOLDERSâ€™ EQUITY	'	'	'	'
Accounts payable and other liabilities	13	22	'	'
Borrowings	709	707	'	'
Stockholders equity	4,993	4,927	'	'
Total liabilities and stockholdersâ€™ equity	$5,715	$5,655	'	'

Condensed_Parent_Company_Only_3

Condensed Parent Company Only Income Statement (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Condensed Statements of Income	'		'		'
Total interest income	$1,210		$1,176		$1,065
Interest expense	117		153		184
Net interest income	1,093		1,023		881
Noninterest income	366		360		245
Noninterest expense	931		1,051		806
Income before income taxes	423		239		262
Income tax benefit	128		71		88
Net income	295		168		174
Net income available to common stockholders	265		141		174
Accumulated other comprehensive (loss) income, period change, net of tax	-95		89		10
Total comprehensive income	200		258		184
Parent Company	'		'		'
Condensed Statements of Income	'		'		'
Interest income	2		7		2
Dividends received from subsidiary	175		45		75
Total interest income	177		52		77
Interest expense	49		50		27
Net interest income	128		3		50
Noninterest income	2		3		-3
Noninterest expense	30		27		25
Income before income taxes	100		-21		22
Income tax benefit	-29		-24		-19
Income before undisbursed income of subsidiary	129		3		42
Undisbursed income of subsidiary	167		166		132
Net income	295		168		174
Preferred stock dividend and discount accretion	30		28		0
Net income available to common stockholders	265		141		174
Accumulated other comprehensive (loss) income, period change, net of tax	-95	[1]	89	[1]	10	[1]
Total comprehensive income	$200		$258		$184

[1]	See Consolidated Statements of Comprehensive Income for other comprehensive income detail.

Condensed_Parent_Company_Only_4

Condensed Parent Company Only Cash Flow (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Cash flows from operating activities:	'	'	'
Net income	$295	$168	$174
Adjustments to reconcile net income to net cash provided by operating activities:	'	'	'
Stock-based compensation expense	10	11	8
Deferred income tax (benefit) expense	5	34	1
Decrease in other assets	-5	-39	46
Decrease in other liabilities	46	-43	23
Net cash provided by operating activities	716	159	330
Cash flows from investing activities:	'	'	'
Proceeds from maturities of securities available for sale	196	242	480
Principal payments received on securities available for sale	1,124	2,108	1,401
Purchases of securities available for sale	-1,497	-6,273	-3,774
Proceeds from sales of securities available for sale	485	3,239	638
Acquisitions, net of cash and cash equivalents	0	7,703	-51
Other, net	-32	53	47
Net cash (used in) provided by investing activities	-1,375	5,574	-2,006
Cash flows from financing activities:	'	'	'
Repayments of short-term borrowings, net	1,839	775	730
Proceeds from long-term borrowings, net	0	0	864
Issuance of common stock in follow-on stock offerings, net	0	0	468
Dividends paid on preferred stock	-30	-28	0
Dividends paid on common stock	-112	-112	-175
Net cash provided by (used in) financing activities	692	-6,138	2,299
Net increase (decrease) in cash and cash equivalents	32	-406	623
Cash and cash equivalents at beginning of period	431	837	214
Cash and cash equivalents at end of period	463	431	837
Parent Company	'	'	'
Cash flows from operating activities:	'	'	'
Net income	295	168	174
Adjustments to reconcile net income to net cash provided by operating activities:	'	'	'
Undisbursed income of subsidiaries	-167	-166	-132
Stock-based compensation expense	9	11	8
Deferred income tax (benefit) expense	-18	7	6
Decrease in other assets	7	35	4
Decrease in other liabilities	-9	-18	-9
Net cash provided by operating activities	118	38	51
Cash flows from investing activities:	'	'	'
Principal payments received on securities available for sale	1	2	3
Purchases of securities available for sale	-2	0	0
Capital contributed to subsidiary	0	-215	-645
Repayments from (loan to) subsidiary	0	'	-215
Proceeds from Collection of Advance to Affiliate	'	215	'
Acquisitions, net of cash and cash equivalents	0	0	-43
Repayment of ESOP loan receivable	1	1	2
Other, net	-1	0	0
Net cash (used in) provided by investing activities	0	3	-898
Cash flows from financing activities:	'	'	'
Proceeds from long-term borrowings, net	0	0	299
Advance from subsidiary	0	0	9
Issuance of common stock in follow-on stock offerings, net	0	0	468
Issuance of preferred stock, net	0	0	338
Purchase of treasury stock	0	0	-127
Proceeds from exercise of stock options	0	0	6
Dividends paid on preferred stock	-30	-28	0
Dividends paid on common stock	-112	-112	-175
Net cash provided by (used in) financing activities	-143	-140	818
Net increase (decrease) in cash and cash equivalents	-25	-99	-29
Cash and cash equivalents at beginning of period	415	514	543
Cash and cash equivalents at end of period	$390	$415	$514