First Niagara Financial (FNFG) 10-Q 6 May 14 2014 Q1 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	3 Months Ended
	Mar. 31, 2014	5-May-14
Entity Information [Line Items]	'	'
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-Q	'
Document Period End Date	31-Mar-14	'
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'Q1	'
Amendment Flag	'false	'
Entity Common Stock, Shares Outstanding	'	355,461,072

Consolidated_Statements_of_Con

Consolidated Statements of Condition (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
ASSETS	'	'
Cash and cash equivalents	$503	$463
Investment securities:	'	'
Available for sale, at fair value (amortized cost of $6,942 and $7,319 in 2014 and 2013; includes pledged securities that can be sold or repledged of $290 and $303 in 2014 and 2013)	7,060	7,423
Held to maturity, at amortized cost (fair value of $4,427 and $3,988 in 2014 and 2013; includes pledged securities that can be sold or repledged of $393 and $388 in 2014 and 2013)	4,467	4,042
Federal Home Loan Bank and Federal Reserve Bank common stock, at amortized cost	438	469
Loans held for sale	34	50
Loans and leases (net of allowance for loan losses of $215 and $209 in 2014 and 2013)	21,536	21,230
Bank owned life insurance	417	415
Premises and equipment, net	412	418
Goodwill	2,449	2,449
Core deposit and other intangibles, net	86	94
Other assets	588	574
Total assets	37,990	37,628
Liabilities:	'	'
Deposits	27,598	26,665
Short-term borrowings	4,137	4,822
Long-term borrowings	733	734
Other	496	414
Total liabilities	32,964	32,635
Stockholders’ 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 2014 and 2013	338	338
Common stock, $0.01 par value, 500,000,000 shares authorized; 366,002,045 shares issued in 2014 and 2013	4	4
Additional paid-in capital	4,235	4,235
Retained earnings	559	536
Accumulated other comprehensive income	69	62
Common stock held by employee stock ownership plan, 1,956,888 and 2,001,373 shares in 2014 and 2013	-16	-17
Treasury stock, at cost, 11,874,588 and 12,060,739 shares in 2014 and 2013	-162	-165
Total stockholders’ equity	5,026	4,993
Total liabilities and stockholders’ equity	$37,990	$37,628

Consolidated_Statements_of_Con1

Consolidated Statements of Condition (Parenthetical) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Millions, except Share data, unless otherwise specified
Statement of Financial Position [Abstract]	'	'
Amortized cost for securities available for sale	$6,942	$7,319
Fair value of pledged securities that can be sold or repledged	290	303
Fair value for securities held-to-maturity	4,427	3,988
Amortized cost of pledged securities that can be sold or repledged	393	388
Allowance for credit losses on loans and leases	$215	$209
Preferred stock, par value (dollars per share)	$0.01	$0.01
Preferred stock, shares authorized	50,000,000	50,000,000
Liquidation preference (dollars per share)	$25	$25
Preferred stock, shares issued	14,000,000	14,000,000
Common stock, par value (dollars per share)	$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	1,956,888	2,001,373
Treasury stock, shares	11,874,588	12,060,739

Consolidated_Statements_of_Inc

Consolidated Statements of Income (Unaudited) (USD $)	3 Months Ended
In Millions, except Per Share data, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Interest income:	'	'
Loans and leases	$210	$207
Investment securities and other	90	89
Total interest income	300	296
Interest expense:	'	'
Deposits	12	14
Borrowings	17	15
Total interest expense	29	29
Net interest income	271	266
Provision for credit losses	25	20
Net interest income after provision for credit losses	246	246
Noninterest income:	'	'
Deposit service charges	23	25
Insurance commissions	16	16
Merchant and card fees	12	11
Wealth management services	16	13
Mortgage banking	3	6
Capital markets income	4	6
Lending and leasing	5	4
Bank owned life insurance	5	3
Other income	-7	4
Total noninterest income	77	89
Noninterest expense:	'	'
Salaries and employee benefits	118	116
Occupancy and equipment	28	28
Technology and communications	30	27
Marketing and advertising	7	4
Professional services	12	10
Amortization of intangibles	8	14
Federal deposit insurance premiums	9	9
Restructuring charges	10	0
Other expense	27	30
Total noninterest expense	249	238
Income before income taxes	74	98
Income taxes	14	30
Net income	59	67
Preferred stock dividend	8	8
Net income available to common stockholders	$52	$60
Earnings per share:	'	'
Basic (dollars per share)	$0.15	$0.17
Diluted (dollars per share)	$0.15	$0.17
Weighted average common shares outstanding:	'	'
Basic	350	349
Diluted	351	350
Dividends per common share	$0.08	$0.08

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Income (Unaudited) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Statement of Comprehensive Income [Abstract]	'	'
Net income	$59	$67
Securities available for sale:	'	'
Net unrealized gains (losses) arising during the year	9	-12
Reclassification adjustment for net unrealized holding gains on securities transferred between available for sale and held to maturity during the year	0	-34
Net unrealized (losses) gains on securities available for sale, net of tax	9	-46
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	0	34
Less: amortization of net unrealized holding gains to income during the year	-2	-1
Net unrealized holding (losses) gains on securities transferred during the period	-2	33
Total other comprehensive income (loss)	7	-12
Total comprehensive income	$66	$55

Consolidated_Statements_of_Cha

Consolidated Statements of Changes in Stockholders' Equity (Unaudited) (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
Beginning Balance at Dec. 31, 2012	$4,927	$338	$4	$4,231	$399	$157	($18)	($184)
Net income	67	'	'	'	67	'	'	'
Total other comprehensive income (loss), net	-12	'	'	'	'	-12	'	'
ESOP shares committed to be released (44,485 shares in both 2014 and 2013)	0	'	'	0	'	'	0	'
Stock-based compensation activity (186,151 shares and 386,958 shares in 2014 and 2013, respectively)	0	'	'	6	-11	'	'	6
Preferred stock dividends	-8	'	'	'	-8	'	'	'
Common stock dividends of $0.08 per share	-28	'	'	'	-28	'	'	'
Ending Balance at Mar. 31, 2013	4,947	338	4	4,236	419	145	-18	-178
Beginning Balance at Dec. 31, 2013	4,993	338	4	4,235	536	62	-17	-165
Net income	59	'	'	'	59	'	'	'
Total other comprehensive income (loss), net	7	'	'	'	'	7	'	'
ESOP shares committed to be released (44,485 shares in both 2014 and 2013)	0	'	'	'	0	'	0	'
Stock-based compensation activity (186,151 shares and 386,958 shares in 2014 and 2013, respectively)	2	'	'	0	-1	'	'	3
Preferred stock dividends	-8	'	'	'	-8	'	'	'
Common stock dividends of $0.08 per share	-28	'	'	'	-28	'	'	'
Ending Balance at Mar. 31, 2014	$5,026	$338	$4	$4,235	$559	$69	($16)	($162)

Consolidated_Statements_of_Cha1

Consolidated Statements of Changes in Stockholders' Equity (Unaudited) (Parenthetical) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Statement of Stockholders' Equity [Abstract]	'	'
ESOP shares committed to be released	44,485	44,485
Stock-based compensation activity, shares	186,151	386,958
Common stock, dividend per share	$0.08	$0.08

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (Unaudited) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Cash flows from operating activities:	'	'
Net income	$59	$67
Adjustments to reconcile net income to net cash provided by operating activities:	'	'
Amortization of fees and discounts, net	11	10
Provision for credit losses	25	20
Depreciation of premises and equipment	13	13
Amortization of intangibles	8	14
Origination of loans held for sale	-128	-404
Proceeds from sales of loans held for sale	145	439
ESOP and stock based-compensation expense	3	2
Deferred income tax (benefit) expense	-20	2
Other, net	39	21
Net cash provided by operating activities	154	184
Cash flows from investing activities:	'	'
Proceeds from sales of securities available for sale	10	166
Proceeds from maturities of securities available for sale	92	27
Principal payments received on securities available for sale	294	528
Purchases of securities available for sale	-18	-624
Principal payments received on securities held to maturity	150	80
Purchases of securities held to maturity	-545	0
Proceeds from sales of Federal Home Loan Bank and Federal Reserve Bank common stock	32	19
Net increase in loans and leases	-335	-341
Purchases of premises and equipment	-11	-19
Other, net	6	5
Net cash used in investing activities	-326	-159
Cash flows from financing activities:	'	'
Net increase in deposits	933	59
Repayments of short-term borrowings, net	-685	-55
Repayments of long-term borrowings	-1	0
Dividends paid on noncumulative preferred stock	-8	-8
Dividends paid on common stock	-28	-28
Other, net	0	-1
Net cash provided by (used in) financing activities	212	-32
Net increase (decrease) in cash and cash equivalents	40	-7
Cash and cash equivalents at beginning of period	463	431
Cash and cash equivalents at end of period	503	424
Cash paid during the period for:	'	'
Income taxes	36	0
Interest expense	30	31
Other noncash activity:	'	'
Securities available for sale purchased not settled	36	43
Securities held to maturity purchased not settled	6	0
Securities transferred from available for sale to held to maturity (at fair value)	$0	$3,001

Investment_Securities

Investment Securities	3 Months Ended
	Mar. 31, 2014
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 at the dates indicated are summarized as follows:
		Amortized		Unrealized			Unrealized			Fair
	31-Mar-14	cost		gains			losses			value
	Investment securities available for sale:
	Debt securities:
	States and political subdivisions	$	506	$	13		$	—		$	519
	U.S. Treasury	20		—			—			20
	U.S. government sponsored enterprises	261		6			(1		)	266
	Corporate	849		22			(7		)	864
	Total debt securities	1,636		42			(7		)	1,670
	Mortgage-backed securities:
	Residential mortgage-backed securities:
	Government National Mortgage Association	40		1			(2		)	38
	Federal National Mortgage Association	127		5			—			131
	Federal Home Loan Mortgage Corporation	145		5			—			149
	Collateralized mortgage obligations:
	Federal National Mortgage Association	776		—			(34		)	742
	Federal Home Loan Mortgage Corporation	387		—			(13		)	374
	Non-agency issued	11		—			—			11
	Total collateralized mortgage obligations	1,174		1			(48		)	1,127
	Total residential mortgage-backed securities	1,484		11			(49		)	1,446
	Commercial mortgage-backed securities, non-agency issued	1,634		76			(1		)	1,709
	Total mortgage-backed securities	3,118		86			(50		)	3,154
	Collateralized loan obligations, non-agency issued	1,331		36			(1		)	1,366
	Asset-backed securities collateralized by:
	Student loans	301		9			—			310
	Credit cards	73		—			—			72
	Auto loans	321		4			—			325
	Other	138		1			(1		)	138
	Total asset-backed securities	833		15			(2		)	846
	Other	23		—			—			23
	Total securities available for sale	$	6,942	$	178		$	(60	)	$	7,060
	Investment securities held to maturity:
	Debt securities, U.S. government agencies	$	20	$	—		$	—		$	20
	Residential mortgage-backed securities:
	Government National Mortgage Association	16		—			—			16
	Federal National Mortgage Association	139		—			(3		)	137
	Federal Home Loan Mortgage Corporation	77		—			(1		)	76
	Collateralized mortgage obligations:
	Government National Mortgage Association	2,041		25			(15		)	2,052
	Federal National Mortgage Association	1,117		1			(37		)	1,081
	Federal Home Loan Mortgage Corporation	1,057		16			(27		)	1,045
	Total collateralized mortgage obligations	4,215		42			(79		)	4,178
	Total residential mortgage-backed securities	4,447		43			(83		)	4,407
	Total securities held to maturity	$	4,467	$	43		$	(83	)	$	4,427
		Amortized		Unrealized			Unrealized			Fair
	31-Dec-13	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 sponsored enterprises	306		7			(1		)	312
	Corporate	863		19			(11		)	872
	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
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-Mar-14	value		losses			Count			value		losses			Count	value		losses			Count
Investment securities available for sale:
Debt securities:
States and political subdivisions	$	13	$	—		25			$	1	$	—		4	$	14	$	—		29
U.S. government sponsored enterprises	71		(1		)	12			—		—			—	71		(1		)	12
Corporate	154		(4		)	94			56		(2		)	28	210		(7		)	122
Total debt securities	239		(5		)	131			57		(2		)	32	296		(7		)	163
Mortgage-backed securities:
Residential mortgage-backed securities:
Government National Mortgage Association	—		—			—			19		(2		)	5	19		(2		)	5
Federal National Mortgage Association	—		—			2			—		—			—	—		—			2
Collateralized mortgage obligations:
Federal National Mortgage Association	685		(32		)	38			38		(2		)	3	723		(34		)	41
Federal Home Loan Mortgage Corporation	359		(13		)	18			—		—			—	359		(13		)	18
Non-agency issued	1		—			4			—		—			—	1		—			4
Total collateralized mortgage obligations	1,045		(45		)	60			38		(2		)	3	1,083		(48		)	63
Total residential mortgage-backed securities	1,045		(45		)	62			57		(4		)	8	1,102		(49		)	70
Commercial mortgage-backed securities, non-agency issued	54		(1		)	8			—		—			1	55		(1		)	9
Total mortgage-backed securities	1,099		(46		)	70			57		(4		)	9	1,157		(50		)	79
Collateralized loan obligations, non-agency issued	240		(1		)	25			9		—			2	249		(1		)	27
Asset-backed securities collateralized by:
Student loans	16		—			4			2		—			1	17		—			5
Credit card	36		—			4			—		—			—	36		—			4
Auto loans	13		—			3			—		—			—	13		—			3
Other	46		(1		)	5			7		—			1	53		(1		)	6
Total asset-backed securities	111		(1		)	16			9		—			2	120		(2		)	18
Other	12		—			3			10		—			3	22		—			6
Total securities available for sale in an unrealized loss position	$	1,701	$	(54	)	245			$	141	$	(7	)	48	$	1,843	$	(60	)	293
	Less than 12 months								12 months or longer						Total
	Fair		Unrealized						Fair		Unrealized				Fair		Unrealized
31-Mar-14	value		losses			Count			value		losses			Count	value		losses			Count
Investment securities held to maturity:
Debt securities, U.S. government agencies	$	10	$	—		2			$	—	$	—		—	$	10	$	—		2
Residential mortgage-backed securities:
Government National Mortgage Association	10		—			4			—		—			—	10		—			4
Federal National Mortgage Association	124		(3		)	35			—		—			—	124		(3		)	35
Federal Home Loan Mortgage Corporation	57		(1		)	17			—		—			—	57		(1		)	17
Collateralized mortgage obligations:
Government National Mortgage Association	830		(15		)	80			—		—			—	830		(15		)	80
Federal National Mortgage Association	840		(35		)	51			66		(3		)	3	906		(37		)	54
Federal Home Loan Mortgage Corporation	622		(26		)	39			33		(1		)	2	654		(27		)	41
Total collateralized mortgage obligations	2,292		(75		)	170			98		(4		)	5	2,390		(79		)	175
Total residential mortgage-backed securities	2,483		(79		)	226			98		(4		)	5	2,581		(83		)	231
Total securities held to maturity in an unrealized loss position	$	2,493	$	(79	)	228			$	98	$	(4	)	5	$	2,591	$	(83	)	233
	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 sponsored enterprises	71		(1		)	11			2		—			2	73		(1		)	13
Corporate	232		(8		)	165			74		(2		)	23	306		(11		)	188
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
We have assessed the securities in an unrealized loss position at March 31, 2014 and December 31, 2013 and determined that the declines in fair value below amortized cost were temporary.
The Volcker Rule provisions of the Dodd-Frank Act restrict our ability to hold debt securities issued by Collateralized Loan Obligations ("CLOs") where our investment in these debt securities is deemed to be an ownership interest in a CLO and the CLO itself does not qualify for an exclusion in the final rule for loan securitizations. On April 7, 2014, the Federal Reserve announced that it intends to grant banking entities two additional one year extensions, which together would extend until July 21, 2017, the time period for institutions to conform their ownership interests in and sponsorship of CLOs to the final Volcker Rule.
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, which could be maturity as the Federal Reserve announcement extends the conformance period to July 2017 and we believe that other structural remedies are available to us to allow us to continue holding the bonds after the conformance period.
In making the determination that the declines in fair value below amortized cost for the remainder of the portfolio were temporary, we considered some or all of 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 at March 31, 2014 were as follows:
	Amortized cost		Fair value
Debt securities:
Within one year	$	162	$	163
After one year through five years	864		889
After five years through ten years	619		627
After ten years	11		10
Total debt securities	1,656		1,690
Mortgage-backed securities	7,566		7,562
Collateralized loan obligations	1,331		1,366
Asset-backed securities	833		846
Other	23		23
	$	11,410	$	11,488
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 increased to 3.7 years at March 31, 2014 from 3.5 years at December 31, 2013.

Loans_and_Leases

Loans and Leases	3 Months Ended
	Mar. 31, 2014
Receivables [Abstract]	'
Loans and Leases	'
	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 the dates indicated:
		31-Mar-14										31-Dec-13
		Originated			Acquired			Total				Originated			Acquired			Total
	Commercial:
	Real estate	$	5,549		$	1,269		$	6,818			$	5,527		$	1,387		$	6,914
	Construction	1,027			23			1,050				828			36			864
	Business	5,053			417			5,470				4,876			414			5,290
	Total commercial	11,629			1,709			13,338				11,231			1,838			13,068
	Consumer:
	Residential real estate	1,898			1,491			3,389				1,902			1,546			3,448
	Home equity	1,605			1,162			2,767				1,618			1,134			2,752
	Indirect auto	1,655			—			1,655				1,544			—			1,544
	Credit cards	306			—			306				325			—			325
	Other consumer	296			—			296				302			—			302
	Total consumer	5,760			2,653			8,413				5,691			2,680			8,371
	Total loans and leases	17,389			4,362			21,751				16,922			4,517			21,440
	Allowance for loan losses	(211		)	(4		)	(215		)		(205		)	(4		)	(209		)
	Total loans and leases, net	$	17,178		$	4,358		$	21,536			$	16,717		$	4,514		$	21,230
	As of March 31, 2014 and December 31, 2013, we had a liability for unfunded loan commitments of $14 million and $13 million, respectively. For the three months ended March 31, 2014 and 2013, we recognized provision for credit losses related to our unfunded loan commitments of $0.4 million.
	Of the $2.8 billion home equity portfolio at both March 31, 2014 and December 31, 2013, $1.0 billion were in a first lien position at both period ends. 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 March 31, 2014 and December 31, 2013.
	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 the dates indicated:
		March 31,			December 31,
		2014			2013
	Credit impaired acquired loans evaluated individually for future credit losses
	Outstanding principal balance	$	16		$	18
	Carrying amount	10			12
	Acquired loans evaluated collectively for future credit losses
	Outstanding principal balance	3,094			3,301
	Carrying amount	3,028			3,233
	Other acquired loans
	Outstanding principal balance	1,369			1,321
	Carrying amount	1,324			1,273
	Total acquired loans
	Outstanding principal balance	4,479			4,640
	Carrying amount	4,362			4,517
	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, 2013	$	(1,057	)
	Net reclassifications from nonaccretable yield	(15		)
	Accretion	199
	Other (1)	22
	Balance at December 31, 2013	(851		)
	Reclassifications from nonaccretable yield	(4		)
	Accretion	38
	Other (1)	55
	Balance at March 31, 2014	$	(762	)
	(1)	Includes changes in expected cash flows from changes in interest rate and prepayment assumptions.
	During the three months ended March 31, 2014 and 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 $55 million and $22 million, respectively.  These changes did not materially impact our interest income or net interest margin.
	Allowance for loan losses
	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 periods indicated:
		Commercial							Consumer
	Originated loans	Real estate			Business				Residential			Home equity			Indirect auto			Credit cards			Other			Total
																					consumer
	Three months ended March 31, 2014
	Allowance for loan losses:
	Balance at beginning of period	$	47		$	120			$	2		$	7		$	10		$	13		$	6		$	205
	Provision for loan losses	(5		)	16				—			1			3			3			2			21
Charge-offs	(1		)	(10		)		—			(1		)	(2		)	(3		)	(2		)	(20		)
Recoveries	3			1				—			—			—			—			—			4
Balance at end of period	$	44		$	127			$	2		$	8		$	11		$	13		$	5		$	211
Allowance for loan losses:
Individually evaluated for impairment	$	1		$	2			$	1		$	3		$	—		$	—		$	—		$	7
Collectively evaluated for impairment	42			125				1			5			11			13			5			204
Total	$	44		$	127			$	2		$	8		$	11		$	13		$	5		$	211
Loans receivable:
Balance at end of period
Individually evaluated for impairment	$	60		$	55			$	20		$	6		$	1		$	—		$	2		$	146
Collectively evaluated for impairment	6,515			4,998				1,878			1,598			1,654			306			293			17,242
Total	$	6,575		$	5,053			$	1,898		$	1,605		$	1,655		$	306		$	296		$	17,389
Three months ended March 31, 2013
Allowance for loan losses:
Balance at beginning of period	$	38		$	99			$	5		$	5		$	3		$	7		$	5		$	161
Provision for loan losses	5			3				—			2			1			5			2			19
Charge-offs	(1		)	(5		)		(1		)	(1		)	—			—			(2		)	(11		)
Recoveries	—			—				—			—			—			—			—			2
Balance at end of period	$	41		$	97			$	4		$	6		$	5		$	12		$	5		$	171
Allowance for loan losses:
Individually evaluated for impairment	$	2		$	7			$	1		$	3		$	—		$	—		$	—		$	12
Collectively evaluated for impairment	40			91				3			3			5			12			5			159
Total	$	41		$	97			$	4		$	6		$	5		$	12		$	5		$	171
Loans receivable:
Balance at end of period
Individually evaluated for impairment	$	76		$	67			$	20		$	6		$	—		$	—		$	2		$	171
Collectively evaluated for impairment	5,255			4,340				1,689			1,333			818			264			230			13,930
Total	$	5,331		$	4,407			$	1,709		$	1,338		$	818		$	264		$	232		$	14,100
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 periods indicated:
	Commercial							Consumer
Acquired loans	Real estate			Business				Residential			Home equity			Credit cards			Other			Total
																	consumer
Three months ended March 31, 2014
Allowance for loan losses:
Balance at beginning of period	$	—		$	—			$	1		$	3		$	—		$	—		$	4
Provision for loan losses	1			—				—			2			—			—			3
Charge-offs	(1		)	—				—			(2		)	—			—			(3		)
Recoveries	—			—				—			—			—			—			—
Balance at end of period	$	—		$	—			$	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 period
Individually evaluated for impairment	$	—		$	7			$	—		$	4		$	—		$	—		$	11
Collectively evaluated for impairment	—			314				—			999			—			—			1,313
Loans acquired with deteriorated credit quality	1,292			95				1,491			160			—			—			3,038
Total	$	1,292		$	417			$	1,491		$	1,162		$	—		$	—		$	4,362
Three months ended March 31, 2013
Allowance for loan losses:
Balance at beginning of period	$	—		$	—			$	—		$	—		$	—		$	1		$	2
Provision for loan losses	1			—				—			—			—			—			1
Charge-offs	(1		)	—				—			—			—			—			(1		)
Recoveries	—			—				—			—			—			—			—
Balance at end of period	$	—		$	—			$	—		$	—		$	—		$	1		$	1
Allowance for loan losses:
Individually evaluated for impairment	$	—		$	—			$	—		$	—		$	—		$	—		$	—
Collectively evaluated for impairment	—			—				—			—			—			1			1
Total	$	—		$	—			$	—		$	—		$	—		$	1		$	1
Loans receivable:
Balance at end of period
Individually evaluated for impairment	$	1		$	8			$	—		$	3		$	—		$	—		$	12
Collectively evaluated for impairment	—			409				—			1,019			34			17			1,480
Loans acquired with deteriorated credit quality	1,963			220				1,906			286			—			67			4,443
Total	$	1,964		$	637			$	1,906		$	1,308		$	34		$	85		$	5,935
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 the dates indicated:
	March 31, 2014										December 31, 2013
	Originated			Acquired			Total				Originated			Acquired			Total
Commercial:
Real estate	$	41		$	—		$	41			$	53		$	1		$	54
Business	35			9			45				42			9			51
Total commercial	77			9			86				95			10			105
Consumer:
Residential real estate	33			—			33				31			—			31
Home equity	20			21			41				18			20			39
Indirect auto	8			—			8				6			—			6
Other consumer	5			—			5				6			—			6
Total consumer	65			21			87				62			20			82
Total	$	142		$	31		$	173			$	157		$	30		$	188
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 periods indicated:
	Three months ended
	March 31,
	2014			2013
Additional interest income that would have been recorded if nonperforming loans had performed in accordance with original terms	$	2		$	2
Impaired loans
The following table provides information about our impaired originated loans including ending recorded investment, principal balance, and related allowance amount at the dates indicated. 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 71% and 69% of the loans’ contractual principal balance at March 31, 2014 and December 31, 2013, respectively.
	31-Mar-14										31-Dec-13
Originated loans	Recorded			Unpaid			Related				Recorded			Unpaid			Related
	investment			principal			allowance				investment			principal			allowance
				balance										balance
With no related allowance recorded:
Commercial:
Real estate	$	47		$	62		$	—			$	48		$	63		$	—
Business	42			69			—				55			84			—
Total commercial	89			131			—				103			146			—
Consumer:
Residential real estate	13			14			—				12			12			—
Home equity	3			4			—				4			5			—
Indirect auto	1			1			—				1			1			—
Other consumer	1			1			—				1			1			—
Total consumer	19			20			—				18			20			—
Total	$	107		$	152		$	—			$	121		$	166		$	—
With a related allowance recorded:
Commercial:
Real estate	$	13		$	17		$	1			$	24		$	35		$	4
Business	13			14			2				4			6			2
Total commercial	27			31			3				28			41			5
Consumer:
Residential real estate	7			8			1				8			9			1
Home equity	3			4			3				4			5			3
Indirect auto	1			1			—				1			1			—
Other consumer	1			1			—				1			1			—
Total consumer	12			13			4				14			16			4
Total	$	39		$	44		$	7			$	42		$	57		$	9
Total
Commercial:
Real estate	$	60		$	79		$	1			$	72		$	97		$	4
Business	55			83			2				59			90			2
Total commercial	116			162			3				131			187			5
Consumer:
Residential real estate	20			22			1				20			21			1
Home equity	6			8			3				8			10			3
Indirect auto	1			2			—				1			2			—
Other consumer	2			3			—				3			3			—
Total consumer	31			34			4				32			36			4
Total	$	146		$	196		$	7			$	163		$	222		$	9
The following table provides information about our impaired acquired loans with no related allowance at the dates indicated. The remaining credit mark is considered adequate to cover any loss on these balances.
	31-Mar-14										31-Dec-13
Acquired loans	Recorded			Unpaid			Related				Recorded			Unpaid principal balance			Related
	investment			principal			allowance				investment						allowance
				balance
Commercial:
Real estate	$	—		$	—		$	—			$	1		$	4		$	—
Business	7			8			—				7			8			—
Total commercial	7			8			—				8			12			—
Consumer:
Residential real estate	—			—			—				—			—			—
Home equity	4			5			—				1			2			—
Other consumer	—			—			—				—			—			—
Total consumer	4			5			—				1			2			—
Total(1)	$	11		$	14		$	—			$	10		$	14		$	—
-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 periods indicated:
	March 31,
	2014							2013
Originated loans	Average			Interest				Average			Interest
	recorded			income				recorded			income
	investment			recognized				investment			recognized
Three months ended
Commercial:
Real estate	$	62		$	—			$	77		$	—
Business	55			—				68			—
Total commercial	117			1				145			—
Consumer:
Residential real estate	20			—				20			—
Home equity	6			—				6			—
Indirect auto	2			—				—			—
Other consumer	2			—				2			—
Total consumer	31			—				27			—
Total	$	148		$	1			$	173		$	—
The following table provides information about our impaired acquired loans including the average recorded investment and interest income recognized on impaired loans for the periods indicated:
	March 31,
	2014							2013
Acquired loans	Average			Interest				Average			Interest
	recorded			income				recorded			income
	investment			recognized				investment			recognized
Three months ended
Commercial:
Real estate	$	—		$	—			$	1		$	—
Business	8			—				8			—
Total commercial	8			—				9			—
Consumer:
Residential real estate	—			—				—			—
Home equity	4			—				3			—
Other consumer	—			—				—			—
Total consumer	4			—				3			—
Total(1)	$	11		$	—			$	12		$	—
-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 the dates indicated:
	Commercial			Consumer			Total
31-Mar-14
Nonaccrual loans	$	86		$	87		$	173
Plus: Accruing TDRs	48			8			56
Less: Smaller balance nonaccrual loans evaluated collectively when determining the allowance for loan losses	(11		)	(61		)	(71		)
Total impaired loans(1)	$	123		$	34		$	157
December 31, 2013:
Nonaccrual loans	$	105		$	82		$	188
Plus: Accruing TDRs	45			8			52
Less: Smaller balance nonaccrual loans evaluated collectively when determining the allowance for loan losses	(11		)	(57		)	(67		)
Total impaired loans(1)	$	139		$	33		$	172
(1)	Includes 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 tables contain an aging analysis of our loans by class at the dates indicated:
	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)
31-Mar-14
Originated loans
Commercial:
Real estate	$	13		$	13		$	29		$	55		$	6,521		$	6,575		$	—
Business	7			1			15			24			5,030			5,053			—
Total commercial	21			14			44			79			11,550			11,629			—
Consumer:
Residential real estate	4			2			21			27			1,871			1,898			—
Home equity	3			2			13			17			1,587			1,605			—
Indirect auto	10			2			3			16			1,640			1,655			—
Credit cards	2			1			3			6			300			306			3
Other consumer	2			1			3			6			290			296			—
Total consumer	21			8			43			73			5,687			5,760			3
Total	$	42		$	22		$	87		$	151		$	17,237		$	17,389		$	3
Acquired loans
Commercial:
Real estate	$	3		$	1		$	42		$	46		$	1,246		$	1,292		$	42
Business	1			1			9			11			406			417			5
Total commercial	4			2			51			57			1,652			1,709			46
Consumer:
Residential real estate	14			9			64			88			1,403			1,491			64
Home equity	9			3			22			34			1,128			1,162			6
Total consumer	23			12			87			122			2,531			2,653			70
Total	$	28		$	14		$	137		$	179		$	4,183		$	4,362		$	116
31-Dec-13
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
(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 the dates indicated:
	Real estate			Business			Total			Percent of total
31-Mar-14
Originated loans:
Pass	$	6,237		$	4,695		$	10,931		94	%
Criticized:(1)
Accrual	298			323			621			5.3
Nonaccrual	41			35			77			0.7
Total criticized	339			359			698			6
Total	$	6,575		$	5,053		$	11,629		100	%
Acquired loans:
Pass	$	1,131		$	360		$	1,491		87.3	%
Criticized:(1)
Accrual	162			48			209			12.2
Nonaccrual	—			9			9			0.5
Total criticized	162			57			218			12.7
Total	$	1,292		$	417		$	1,709		100	%
31-Dec-13
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	%
(1)	Includes special mention, substandard, doubtful, and loss, which are consistent with regulatory definitions, and as described in Item 1, “Business,” under “Asset Quality Review” in our Annual Report on 10-K for the year ended December 31, 2013.
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 the dates indicated:
	Residential			Home equity			Indirect auto			Credit cards			Other			Total			Percent of
	real estate												consumer						total
31-Mar-14
Originated loans by refreshed FICO score:
Over 700	$	1,628		$	1,315		$	1,069		$	206		$	170		$	4,388		76.2	%
660-700	130			159			317			52			51			710			12.3
620-660	63			65			157			24			27			335			5.8
580-620	31			32			60			11			13			148			2.6
Less than 580	37			30			53			8			15			143			2.5
No score(1)	10			3			—			3			19			35			0.5
Total	$	1,898		$	1,605		$	1,655		$	306		$	296		$	5,760		100	%
Acquired loans by refreshed FICO score:
Over 700	$	1,035		$	904		$	—		$	—		$	—		$	1,939		73.1	%
660-700	108			100			—			—			—			207			7.8
620-660	65			58			—			—			—			123			4.6
580-620	54			40			—			—			—			94			3.5
Less than 580	73			41			—			—			—			114			4.3
No score(1)	156			19			—			—			—			175			6.6
Total	$	1,491		$	1,162		$	—		$	—		$	—		$	2,653		100	%
31-Dec-13
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	%
(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 the dates indicated:
	March 31,			December 31,
	2014			2013
Aggregate recorded investment of impaired loans with terms modified through a troubled debt restructuring:
Accruing interest	$	56		$	52
Nonaccrual	46			56
Total troubled debt restructurings (1)	$	102		$	108
(1)	Includes 74 and 40 acquired loans that were restructured with a recorded investment of $4 million and $1 million at March 31, 2014 and December 31, 2013, 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 periods indicated:
Type of Concession	Count		Postmodification			Premodification			Postmodification
			recorded			allowance for			allowance for
			investment(1)			loan losses			loan losses
Three months ended March 31, 2014
Commercial:
Commercial real estate
Extension of term and rate reduction	1		$	—		$	—		$	—
Commercial business
Extension of term	2		3			—			—
Total commercial	3		3			—			—
Consumer:
Residential real estate
Extension of term	2		$	—		$	—		$	—
Deferral of principal and extension of term	1		—			—			—
Extension of term and rate reduction	4		—			—			—
Chapter 7 bankruptcy	8		1			—			—
Home equity
Deferral of principal and extension of term	2		—			—			—
Chapter 7 Bankruptcy	33		1			—			—
Indirect auto
Chapter 7 Bankruptcy	86		1			—			—
Total consumer	136		4			—			—
Total	139		$	7		$	—		$	—
Three months ended March 31, 2013
Commercial:
Commercial real estate
Extension of term	4		$	6		$	—		$	1
Extension of term and rate reduction	1		4			—			—
Commercial business
Extension of term	4		7			1			—
Total commercial	9		18			2			1
Consumer:
Residential real estate
Extension of term	1		$	—		$	—		$	—
Rate reduction	2		—			—			—
Extension of term and rate reduction	2		1			—			—
Chapter 7 Bankruptcy	2		—			—			—
Home equity
Rate reduction	1		—			—			—
Chapter 7 Bankruptcy	7		—			—			—
Indirect auto
Chapter 7 Bankruptcy	8		—			—			—
Other consumer
Chapter 7 Bankruptcy	14		—			—			—
Total consumer	37		2			—			—
Total	46		$	20		$	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 was not significant for the three months ended March 31, 2014 and 2013.
Residential Mortgage Banking
The following table provides information about our residential mortgage banking activities at the dates indicated:
	March 31,
	2014			2013
Mortgages serviced for others	$	3,713		$	3,157
Mortgage servicing asset recorded for loans serviced for others, net	36			28

Derivative_Financial_Instrumen

Derivative Financial Instruments	3 Months Ended
	Mar. 31, 2014
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 the dates indicated:
		Asset derivatives				Liability derivatives
		Notional		Fair value  (1)		Notional		Fair value  (2)
		amount				amount
	31-Mar-14
	Derivatives designated as hedging instruments:
	Interest rate swap agreements	$	11	$	—	$	24	$	1
	Derivatives not designated as hedging instruments:
	Interest rate swap agreements	3,172		70		3,204		71
	Total derivatives	$	3,183	$	70	$	3,228	$	72
	31-Dec-13
	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
	(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.
	Some of our interest rate swaps for which we had master netting arrangements with the counterparty were in a net liability position of $47 million and $49 million at March 31, 2014 and December 31, 2013, respectively. We offset $70 million and $76 million of liabilities with $23 million and $27 million of assets in our Consolidated Statement of Financial Condition at March 31, 2014 and December 31, 2013, respectively, 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 $58 million and $43 million at March 31, 2014 and December 31, 2013, respectively.
	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 for the three months ended March 31, 2014 and 2013.
	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 March 31, 2014, we did not have any derivatives classified as cash flow hedges. At March 31, 2014, there was a $5 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 amount of gain on our cash flow hedging relationships recognized in other comprehensive income and the amount of loss on our cash flow hedging relationships reclassified from other comprehensive income to interest expense on borrowings were not significant for the three months ended March 31, 2014 and 2013.
	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 $2 million and $5 million for the three months ended March 31, 2014 and 2013, respectively, included in Capital Markets income in our Consolidated Statements of Income.

Earnings_Per_Share

Earnings Per Share	3 Months Ended
	Mar. 31, 2014
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 periods indicated:
		Three months ended March 31,
		2014			2013
	Net income available to common stockholders	$	52		$	60
	Less income allocable to unvested restricted stock awards	—			—
	Net income allocable to common stockholders	$	52		$	60
	Weighted average common shares outstanding:
	Total shares issued	366			366
	Unallocated employee stock ownership plan shares	(2		)	(2		)
	Unvested restricted stock awards	(2		)	(1		)
	Treasury shares	(12		)	(13		)
	Total basic weighted average common shares outstanding	350			349
	Effect of dilutive stock-based awards	2			1
	Total diluted weighted average common shares outstanding	351			350
	Basic earnings per common share	$	0.15		$	0.17
	Diluted earnings per common share	$	0.15		$	0.17
	Anti-dilutive stock-based awards excluded from the diluted weighted average common share calculations	11			11

Other_Comprehensive_Income

Other Comprehensive Income	3 Months Ended
	Mar. 31, 2014
Equity [Abstract]	'
Other Comprehensive Income	'
	Other Comprehensive Income
	The following table presents the activity in our Other Comprehensive Income for the periods indicated:
		Pretax			Income taxes			Net
	Three months ended March 31, 2014
	Securities available for sale:
	Net unrealized holding gains arising during the year	$	14		$	5		$	9
	Net unrealized holding gains on securities transferred between available for sale and held to maturity:
	Amortization of net unrealized holding gains to income during the year	(3		)	(1		)	(2		)	(1)
	Total other comprehensive income	$	11		$	4		$	7
	Three months ended March 31, 2013
	Securities available for sale:
	Net unrealized holding losses arising during the year	$	(19	)	$	(7	)	$	(12	)
	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	(74		)	(28		)	(46		)
	Net unrealized holding gains on securities transferred between available for sale and held to maturity:
	Net unrealized holding gains transferred during the period	55			21			34
	Less: amortization of net unrealized holding gains to income during the year	(1		)	—			(1		)	(1)
	Net unrealized holding gains on securities transferred during the year	54			21			33
	Total other comprehensive loss	$	(19	)	$	(7	)	$	(12	)
	(1)	Included in Interest income on investment securities and other 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 (losses) on			Unrealized loss 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, 2014	$	64		$	20		$	(6	)	$	(16	)	$	62
	Period change, net of tax	9			(2		)	—			—			7
	Balance, March 31, 2014	$	73		$	18		$	(5	)	$	(16	)	$	69
	Balance, January 1, 2013	$	207		$	(2	)	$	(6	)	$	(41	)	$	157
	Period change, net of tax	(46		)	33			—			—			(12		)
	Balance, March 31, 2013	$	161		$	32		$	(6	)	$	(41	)	$	145
	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.

Fair_Value_Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2014
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 determine the fair value using third party pricing services, including brokers. As of March 31, 2014, none of our investment securities were priced utilizing broker quotes. For details regarding our pricing process and sources, refer to Item 2, “Management’s Discussion and Analysis of Financial Condition and Results of Income-Critical Accounting Policies and Estimates.”
	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 March 31, 2014 or December 31, 2013. The table below presents information about our loans held for sale for which we elected the fair value option at the dates indicated:
		March 31,		December 31,
		2014		2013
	Fair value carrying amount	$	34	$	50
	Aggregate unpaid principal balance	1		1
	Fair value carrying amount less aggregate unpaid principal balance	$	34	$	49
	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 the dates indicated:
		Fair Value Measurements
		Total		Level 1			Level 2			Level 3
	31-Mar-14
	Assets:
	Investment securities available for sale:
	Debt securities:
	States and political subdivisions	$	519	$	—		$	519		$	—
	U.S. Treasury	20		20			—			—
	U.S. government sponsored enterprises	266		—			266			—
	Corporate	864		—			860			4
	Total debt securities	1,670		20			1,646			4
	Mortgage-backed securities:
	Residential mortgage-backed securities:
	Government National Mortgage Association	38		—			38			—
	Federal National Mortgage Association	131		—			131			—
	Federal Home Loan Mortgage Corporation	149		—			149			—
	Collateralized mortgage obligations:
	Federal National Mortgage Association	742		—			742			—
	Federal Home Loan Mortgage Corporation	374		—			374			—
	Non-agency issued	11		—			11			—
	Total collateralized mortgage obligations	1,127		—			1,127			—
	Total residential mortgage-backed securities	1,446		—			1,446			—
	Commercial mortgage-backed securities, non-agency issued	1,709		—			1,709			—
	Total mortgage-backed securities	3,154		—			3,154			—
	Collateralized loan obligations, non-agency issued	1,366		—			1,366			—
	Asset-backed securities collateralized by:
	Student loans	310		—			310			—
	Credit cards	72		—			72			—
	Auto loans	325		—			325			—
	Other	138		—			138			—
	Total asset-backed securities	846		—			846			—
	Other	23		22			1			—
	Total securities available for sale	7,060		43			7,013			4
	Loans held for sale (1)	34		—			34			—
	Derivatives	47		—			47			—
	Total assets	$	7,142	$	43		$	7,095		$	4
	Liabilities:
	Derivatives	$	48	$	—		$	48		$	—
	(1)	Represents loans for which we have elected the fair value option.
		Fair Value Measurements
	Total		Level 1			Level 2			Level 3
31-Dec-13
Assets:
Investment securities available for sale:
Debt securities:
States and political subdivisions	$	529	$	—		$	529		$	—
U.S. Treasury	20		20			—			—
U.S. government sponsored enterprises	312		—			312			—
Corporate	872		—			868			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.
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 periods indicated:
	Fair Value Measurements											Total gains
	Total		Level 1			Level 2			Level 3			(losses)
Three months ended March 31, 2014
Collateral dependent impaired loans	$	26	$	—		$	20		$	6		$	(2	)
Three months ended March 31, 2013
Collateral dependent impaired loans	$	42	$	—		$	29		$	13		$	(5	)
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 the three months ended March 31, 2014, 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 $26 million at March 31, 2014, which is included in our provision for credit losses. During the three months ended March 31, 2013 we recorded an increase of $5 million to our specific allowance as a result of adjusting the fair value of the collateral for certain collateral dependent impaired loans to $42 million at March 31, 2013, 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 periods indicated:
	Three months ended March 31,
	2014			2013
	Trust			Trust			Collateralized			Total
	preferred			preferred			loan obligations
	securities			securities
Balance at beginning of period	$	4		$	14		$	1,545		$	1,559
Purchases	—			—			45			45
Gains included in other comprehensive income	—			1			14			14
Balance at end of period	$	4		$	15		$	1,603		$	1,618
Due to the lack of observable market data, we have classified our trust preferred securities, which are included in corporate debt securities, in Level 3 of the fair value hierarchy.
Our collateralized loan obligations ("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 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. At March 31, 2013, our CLOs were classified in 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. 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 the fourth quarter of 2013, we transferred our CLOs from level 3 to level 2 of the fair value hierarchy based on increased trading activity and price transparency.
As of March 31, 2014 and December 31, 2013, the fair values of our trust preferred securities are based upon third party pricing without adjustment.
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, at the dates indicated are as follows:
	31-Mar-14									31-Dec-13
	Carrying value		Estimated fair			Fair value				Carrying value			Estimated fair		Fair value
			value			level							value		level
Financial assets:
Cash and cash equivalents	$	503	$	503		1				$	463		$	463	1
Investment securities available for sale	7,060		7,060			1,2,3		(1)		7,423			7,423		1,2,3	(1)
Investment securities held to maturity	4,467		4,427			2				4,042			3,988		2
Federal Home Loan Bank and Federal Reserve Bank common stock	438		438			2				469			469		2
Loans held for sale	34		34			2				50			50		2
Loans and leases, net	21,536		22,062			2,3		(2)		21,230			21,774		2,3	(2)
Derivatives	47		47			2				49			49		2
Accrued interest receivable	106		106			2				103			103		2
Financial liabilities:
Deposits	$	27,598	$	27,621		2				$	26,665		$	26,695	2
Borrowings	4,871		4,905			2				5,556			5,599		2
Derivatives	48		48			2				50			50		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 of collateral dependent impaired loans without significant adjustments made to appraised values at March 31, 2014 and December 31, 2013. 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	3 Months Ended
	Mar. 31, 2014
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 periods indicated:
		Banking		Financial		Consolidated
				services		total
	Three months ended March 31, 2014
	Net interest income	$	271	$	—	$	271
	Provision for credit losses	25		—		25
	Net interest income after provision for credit losses	246		—		246
	Noninterest income	61		16		77
	Amortization of intangibles	7		1		8
	Other noninterest expense	227		14		241
	Income before income taxes	73		1		74
	Income tax expense	14		—		14
	Net income	$	59	$	1	$	59
	Three months ended March 31, 2013
	Net interest income	$	266	$	—	$	266
	Provision for credit losses	20		—		20
	Net interest income after provision for credit losses	246		—		246
	Noninterest income	73		16		89
	Amortization of intangibles	13		1		14
	Other noninterest expense	211		13		224
	Income before income taxes	95		3		98
	Income tax expense	29		1		30
	Net income	$	66	$	2	$	67

Loans_and_Leases_Policies

Loans and Leases (Policies)	3 Months Ended
	Mar. 31, 2014
Receivables [Abstract]	'
Acquired Loans	'
	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.

Investment_Securities_Tables

Investment Securities (Tables)	3 Months Ended
	Mar. 31, 2014
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 at the dates indicated are summarized as follows:
		Amortized		Unrealized			Unrealized			Fair
	31-Mar-14	cost		gains			losses			value
	Investment securities available for sale:
	Debt securities:
	States and political subdivisions	$	506	$	13		$	—		$	519
	U.S. Treasury	20		—			—			20
	U.S. government sponsored enterprises	261		6			(1		)	266
	Corporate	849		22			(7		)	864
	Total debt securities	1,636		42			(7		)	1,670
	Mortgage-backed securities:
	Residential mortgage-backed securities:
	Government National Mortgage Association	40		1			(2		)	38
	Federal National Mortgage Association	127		5			—			131
	Federal Home Loan Mortgage Corporation	145		5			—			149
	Collateralized mortgage obligations:
	Federal National Mortgage Association	776		—			(34		)	742
	Federal Home Loan Mortgage Corporation	387		—			(13		)	374
	Non-agency issued	11		—			—			11
	Total collateralized mortgage obligations	1,174		1			(48		)	1,127
	Total residential mortgage-backed securities	1,484		11			(49		)	1,446
	Commercial mortgage-backed securities, non-agency issued	1,634		76			(1		)	1,709
	Total mortgage-backed securities	3,118		86			(50		)	3,154
	Collateralized loan obligations, non-agency issued	1,331		36			(1		)	1,366
	Asset-backed securities collateralized by:
	Student loans	301		9			—			310
	Credit cards	73		—			—			72
	Auto loans	321		4			—			325
	Other	138		1			(1		)	138
	Total asset-backed securities	833		15			(2		)	846
	Other	23		—			—			23
	Total securities available for sale	$	6,942	$	178		$	(60	)	$	7,060
	Investment securities held to maturity:
	Debt securities, U.S. government agencies	$	20	$	—		$	—		$	20
	Residential mortgage-backed securities:
	Government National Mortgage Association	16		—			—			16
	Federal National Mortgage Association	139		—			(3		)	137
	Federal Home Loan Mortgage Corporation	77		—			(1		)	76
	Collateralized mortgage obligations:
	Government National Mortgage Association	2,041		25			(15		)	2,052
	Federal National Mortgage Association	1,117		1			(37		)	1,081
	Federal Home Loan Mortgage Corporation	1,057		16			(27		)	1,045
	Total collateralized mortgage obligations	4,215		42			(79		)	4,178
	Total residential mortgage-backed securities	4,447		43			(83		)	4,407
	Total securities held to maturity	$	4,467	$	43		$	(83	)	$	4,427
		Amortized		Unrealized			Unrealized			Fair
	31-Dec-13	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 sponsored enterprises	306		7			(1		)	312
	Corporate	863		19			(11		)	872
	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
Investment securities in an 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-Mar-14	value		losses			Count			value		losses			Count	value		losses			Count
	Investment securities available for sale:
	Debt securities:
	States and political subdivisions	$	13	$	—		25			$	1	$	—		4	$	14	$	—		29
	U.S. government sponsored enterprises	71		(1		)	12			—		—			—	71		(1		)	12
	Corporate	154		(4		)	94			56		(2		)	28	210		(7		)	122
	Total debt securities	239		(5		)	131			57		(2		)	32	296		(7		)	163
	Mortgage-backed securities:
	Residential mortgage-backed securities:
	Government National Mortgage Association	—		—			—			19		(2		)	5	19		(2		)	5
	Federal National Mortgage Association	—		—			2			—		—			—	—		—			2
	Collateralized mortgage obligations:
	Federal National Mortgage Association	685		(32		)	38			38		(2		)	3	723		(34		)	41
	Federal Home Loan Mortgage Corporation	359		(13		)	18			—		—			—	359		(13		)	18
	Non-agency issued	1		—			4			—		—			—	1		—			4
	Total collateralized mortgage obligations	1,045		(45		)	60			38		(2		)	3	1,083		(48		)	63
	Total residential mortgage-backed securities	1,045		(45		)	62			57		(4		)	8	1,102		(49		)	70
	Commercial mortgage-backed securities, non-agency issued	54		(1		)	8			—		—			1	55		(1		)	9
	Total mortgage-backed securities	1,099		(46		)	70			57		(4		)	9	1,157		(50		)	79
	Collateralized loan obligations, non-agency issued	240		(1		)	25			9		—			2	249		(1		)	27
	Asset-backed securities collateralized by:
	Student loans	16		—			4			2		—			1	17		—			5
	Credit card	36		—			4			—		—			—	36		—			4
	Auto loans	13		—			3			—		—			—	13		—			3
	Other	46		(1		)	5			7		—			1	53		(1		)	6
	Total asset-backed securities	111		(1		)	16			9		—			2	120		(2		)	18
	Other	12		—			3			10		—			3	22		—			6
	Total securities available for sale in an unrealized loss position	$	1,701	$	(54	)	245			$	141	$	(7	)	48	$	1,843	$	(60	)	293
		Less than 12 months								12 months or longer						Total
		Fair		Unrealized						Fair		Unrealized				Fair		Unrealized
	31-Mar-14	value		losses			Count			value		losses			Count	value		losses			Count
	Investment securities held to maturity:
	Debt securities, U.S. government agencies	$	10	$	—		2			$	—	$	—		—	$	10	$	—		2
	Residential mortgage-backed securities:
	Government National Mortgage Association	10		—			4			—		—			—	10		—			4
	Federal National Mortgage Association	124		(3		)	35			—		—			—	124		(3		)	35
	Federal Home Loan Mortgage Corporation	57		(1		)	17			—		—			—	57		(1		)	17
	Collateralized mortgage obligations:
	Government National Mortgage Association	830		(15		)	80			—		—			—	830		(15		)	80
	Federal National Mortgage Association	840		(35		)	51			66		(3		)	3	906		(37		)	54
	Federal Home Loan Mortgage Corporation	622		(26		)	39			33		(1		)	2	654		(27		)	41
	Total collateralized mortgage obligations	2,292		(75		)	170			98		(4		)	5	2,390		(79		)	175
	Total residential mortgage-backed securities	2,483		(79		)	226			98		(4		)	5	2,581		(83		)	231
	Total securities held to maturity in an unrealized loss position	$	2,493	$	(79	)	228			$	98	$	(4	)	5	$	2,591	$	(83	)	233
		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 sponsored enterprises	71		(1		)	11			2		—			2	73		(1		)	13
	Corporate	232		(8		)	165			74		(2		)	23	306		(11		)	188
	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
Scheduled contractual maturities of investment securities	'
	Scheduled contractual maturities of our investment securities at March 31, 2014 were as follows:
		Amortized cost		Fair value
	Debt securities:
	Within one year	$	162	$	163
	After one year through five years	864		889
	After five years through ten years	619		627
	After ten years	11		10
	Total debt securities	1,656		1,690
	Mortgage-backed securities	7,566		7,562
	Collateralized loan obligations	1,331		1,366
	Asset-backed securities	833		846
	Other	23		23
		$	11,410	$	11,488

Loans_and_Leases_Tables

Loans and Leases (Tables)	3 Months Ended
	Mar. 31, 2014
Receivables [Abstract]	'
Summary of loans and leases	'
	Our loans and leases receivable consisted of the following at the dates indicated:
		31-Mar-14										31-Dec-13
		Originated			Acquired			Total				Originated			Acquired			Total
	Commercial:
	Real estate	$	5,549		$	1,269		$	6,818			$	5,527		$	1,387		$	6,914
	Construction	1,027			23			1,050				828			36			864
	Business	5,053			417			5,470				4,876			414			5,290
	Total commercial	11,629			1,709			13,338				11,231			1,838			13,068
	Consumer:
	Residential real estate	1,898			1,491			3,389				1,902			1,546			3,448
	Home equity	1,605			1,162			2,767				1,618			1,134			2,752
	Indirect auto	1,655			—			1,655				1,544			—			1,544
	Credit cards	306			—			306				325			—			325
	Other consumer	296			—			296				302			—			302
	Total consumer	5,760			2,653			8,413				5,691			2,680			8,371
	Total loans and leases	17,389			4,362			21,751				16,922			4,517			21,440
	Allowance for loan losses	(211		)	(4		)	(215		)		(205		)	(4		)	(209		)
	Total loans and leases, net	$	17,178		$	4,358		$	21,536			$	16,717		$	4,514		$	21,230
The outstanding principal balance and the related carrying amount of acquired loans	'
		March 31,			December 31,
		2014			2013
	Credit impaired acquired loans evaluated individually for future credit losses
	Outstanding principal balance	$	16		$	18
	Carrying amount	10			12
	Acquired loans evaluated collectively for future credit losses
	Outstanding principal balance	3,094			3,301
	Carrying amount	3,028			3,233
	Other acquired loans
	Outstanding principal balance	1,369			1,321
	Carrying amount	1,324			1,273
	Total acquired loans
	Outstanding principal balance	4,479			4,640
	Carrying amount	4,362			4,517
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, 2013	$	(1,057	)
	Net reclassifications from nonaccretable yield	(15		)
	Accretion	199
	Other (1)	22
	Balance at December 31, 2013	(851		)
	Reclassifications from nonaccretable yield	(4		)
	Accretion	38
	Other (1)	55
	Balance at March 31, 2014	$	(762	)
	(1)	Includes changes in expected cash flows from changes in interest rate and prepayment assumptions.
Activity in the allowance for credit losses	'
	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 periods indicated:
		Commercial							Consumer
	Originated loans	Real estate			Business				Residential			Home equity			Indirect auto			Credit cards			Other			Total
																					consumer
	Three months ended March 31, 2014
	Allowance for loan losses:
	Balance at beginning of period	$	47		$	120			$	2		$	7		$	10		$	13		$	6		$	205
	Provision for loan losses	(5		)	16				—			1			3			3			2			21
	Charge-offs	(1		)	(10		)		—			(1		)	(2		)	(3		)	(2		)	(20		)
	Recoveries	3			1				—			—			—			—			—			4
	Balance at end of period	$	44		$	127			$	2		$	8		$	11		$	13		$	5		$	211
	Allowance for loan losses:
	Individually evaluated for impairment	$	1		$	2			$	1		$	3		$	—		$	—		$	—		$	7
	Collectively evaluated for impairment	42			125				1			5			11			13			5			204
	Total	$	44		$	127			$	2		$	8		$	11		$	13		$	5		$	211
	Loans receivable:
	Balance at end of period
	Individually evaluated for impairment	$	60		$	55			$	20		$	6		$	1		$	—		$	2		$	146
	Collectively evaluated for impairment	6,515			4,998				1,878			1,598			1,654			306			293			17,242
	Total	$	6,575		$	5,053			$	1,898		$	1,605		$	1,655		$	306		$	296		$	17,389
	Three months ended March 31, 2013
	Allowance for loan losses:
	Balance at beginning of period	$	38		$	99			$	5		$	5		$	3		$	7		$	5		$	161
	Provision for loan losses	5			3				—			2			1			5			2			19
	Charge-offs	(1		)	(5		)		(1		)	(1		)	—			—			(2		)	(11		)
	Recoveries	—			—				—			—			—			—			—			2
	Balance at end of period	$	41		$	97			$	4		$	6		$	5		$	12		$	5		$	171
	Allowance for loan losses:
	Individually evaluated for impairment	$	2		$	7			$	1		$	3		$	—		$	—		$	—		$	12
	Collectively evaluated for impairment	40			91				3			3			5			12			5			159
	Total	$	41		$	97			$	4		$	6		$	5		$	12		$	5		$	171
	Loans receivable:
	Balance at end of period
	Individually evaluated for impairment	$	76		$	67			$	20		$	6		$	—		$	—		$	2		$	171
	Collectively evaluated for impairment	5,255			4,340				1,689			1,333			818			264			230			13,930
	Total	$	5,331		$	4,407			$	1,709		$	1,338		$	818		$	264		$	232		$	14,100
	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 periods indicated:
		Commercial							Consumer
	Acquired loans	Real estate			Business				Residential			Home equity			Credit cards			Other			Total
																		consumer
	Three months ended March 31, 2014
	Allowance for loan losses:
	Balance at beginning of period	$	—		$	—			$	1		$	3		$	—		$	—		$	4
	Provision for loan losses	1			—				—			2			—			—			3
	Charge-offs	(1		)	—				—			(2		)	—			—			(3		)
	Recoveries	—			—				—			—			—			—			—
	Balance at end of period	$	—		$	—			$	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 period
	Individually evaluated for impairment	$	—		$	7			$	—		$	4		$	—		$	—		$	11
	Collectively evaluated for impairment	—			314				—			999			—			—			1,313
	Loans acquired with deteriorated credit quality	1,292			95				1,491			160			—			—			3,038
	Total	$	1,292		$	417			$	1,491		$	1,162		$	—		$	—		$	4,362
	Three months ended March 31, 2013
	Allowance for loan losses:
	Balance at beginning of period	$	—		$	—			$	—		$	—		$	—		$	1		$	2
	Provision for loan losses	1			—				—			—			—			—			1
	Charge-offs	(1		)	—				—			—			—			—			(1		)
	Recoveries	—			—				—			—			—			—			—
Balance at end of period	$	—		$	—			$	—		$	—		$	—		$	1		$	1
Allowance for loan losses:
Individually evaluated for impairment	$	—		$	—			$	—		$	—		$	—		$	—		$	—
Collectively evaluated for impairment	—			—				—			—			—			1			1
Total	$	—		$	—			$	—		$	—		$	—		$	1		$	1
Loans receivable:
Balance at end of period
Individually evaluated for impairment	$	1		$	8			$	—		$	3		$	—		$	—		$	12
Collectively evaluated for impairment	—			409				—			1,019			34			17			1,480
Loans acquired with deteriorated credit quality	1,963			220				1,906			286			—			67			4,443
Total	$	1,964		$	637			$	1,906		$	1,308		$	34		$	85		$	5,935
Summary of nonperforming loans	'
	Our nonperforming loans consisted of the following at the dates indicated:
		March 31, 2014										December 31, 2013
		Originated			Acquired			Total				Originated			Acquired			Total
	Commercial:
	Real estate	$	41		$	—		$	41			$	53		$	1		$	54
	Business	35			9			45				42			9			51
	Total commercial	77			9			86				95			10			105
	Consumer:
	Residential real estate	33			—			33				31			—			31
	Home equity	20			21			41				18			20			39
	Indirect auto	8			—			8				6			—			6
	Other consumer	5			—			5				6			—			6
	Total consumer	65			21			87				62			20			82
	Total	$	142		$	31		$	173			$	157		$	30		$	188
Additional interest income if loans were performing	'
	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 periods indicated:
		Three months ended
		March 31,
		2014			2013
	Additional interest income that would have been recorded if nonperforming loans had performed in accordance with original terms	$	2		$	2
Summary of impaired loans	'
	The following table provides information about our impaired originated loans including ending recorded investment, principal balance, and related allowance amount at the dates indicated. 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 71% and 69% of the loans’ contractual principal balance at March 31, 2014 and December 31, 2013, respectively.
		31-Mar-14										31-Dec-13
	Originated loans	Recorded			Unpaid			Related				Recorded			Unpaid			Related
		investment			principal			allowance				investment			principal			allowance
					balance										balance
	With no related allowance recorded:
	Commercial:
	Real estate	$	47		$	62		$	—			$	48		$	63		$	—
	Business	42			69			—				55			84			—
	Total commercial	89			131			—				103			146			—
	Consumer:
	Residential real estate	13			14			—				12			12			—
	Home equity	3			4			—				4			5			—
	Indirect auto	1			1			—				1			1			—
	Other consumer	1			1			—				1			1			—
	Total consumer	19			20			—				18			20			—
	Total	$	107		$	152		$	—			$	121		$	166		$	—
	With a related allowance recorded:
	Commercial:
	Real estate	$	13		$	17		$	1			$	24		$	35		$	4
	Business	13			14			2				4			6			2
	Total commercial	27			31			3				28			41			5
	Consumer:
	Residential real estate	7			8			1				8			9			1
	Home equity	3			4			3				4			5			3
	Indirect auto	1			1			—				1			1			—
	Other consumer	1			1			—				1			1			—
	Total consumer	12			13			4				14			16			4
	Total	$	39		$	44		$	7			$	42		$	57		$	9
	Total
	Commercial:
	Real estate	$	60		$	79		$	1			$	72		$	97		$	4
	Business	55			83			2				59			90			2
	Total commercial	116			162			3				131			187			5
	Consumer:
	Residential real estate	20			22			1				20			21			1
	Home equity	6			8			3				8			10			3
	Indirect auto	1			2			—				1			2			—
	Other consumer	2			3			—				3			3			—
	Total consumer	31			34			4				32			36			4
	Total	$	146		$	196		$	7			$	163		$	222		$	9
	The following table provides information about our impaired acquired loans with no related allowance at the dates indicated. The remaining credit mark is considered adequate to cover any loss on these balances.
		31-Mar-14										31-Dec-13
	Acquired loans	Recorded			Unpaid			Related				Recorded			Unpaid principal balance			Related
		investment			principal			allowance				investment						allowance
					balance
	Commercial:
	Real estate	$	—		$	—		$	—			$	1		$	4		$	—
	Business	7			8			—				7			8			—
	Total commercial	7			8			—				8			12			—
	Consumer:
	Residential real estate	—			—			—				—			—			—
	Home equity	4			5			—				1			2			—
	Other consumer	—			—			—				—			—			—
	Total consumer	4			5			—				1			2			—
	Total(1)	$	11		$	14		$	—			$	10		$	14		$	—
	-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 periods indicated:
		March 31,
		2014							2013
	Originated loans	Average			Interest				Average			Interest
		recorded			income				recorded			income
		investment			recognized				investment			recognized
Three months ended
Commercial:
Real estate	$	62		$	—			$	77		$	—
Business	55			—				68			—
Total commercial	117			1				145			—
Consumer:
Residential real estate	20			—				20			—
Home equity	6			—				6			—
Indirect auto	2			—				—			—
Other consumer	2			—				2			—
Total consumer	31			—				27			—
Total	$	148		$	1			$	173		$	—
The following table provides information about our impaired acquired loans including the average recorded investment and interest income recognized on impaired loans for the periods indicated:
	March 31,
	2014							2013
Acquired loans	Average			Interest				Average			Interest
	recorded			income				recorded			income
	investment			recognized				investment			recognized
Three months ended
Commercial:
Real estate	$	—		$	—			$	1		$	—
Business	8			—				8			—
Total commercial	8			—				9			—
Consumer:
Residential real estate	—			—				—			—
Home equity	4			—				3			—
Other consumer	—			—				—			—
Total consumer	4			—				3			—
Total(1)	$	11		$	—			$	12		$	—
-1	Includes nonaccrual purchased credit impaired loans.
Reconciliation between nonaccrual loans and impaired loans	'
	The following table is a reconciliation between nonaccrual loans and impaired loans at the dates indicated:
		Commercial			Consumer			Total
	31-Mar-14
	Nonaccrual loans	$	86		$	87		$	173
	Plus: Accruing TDRs	48			8			56
	Less: Smaller balance nonaccrual loans evaluated collectively when determining the allowance for loan losses	(11		)	(61		)	(71		)
	Total impaired loans(1)	$	123		$	34		$	157
	December 31, 2013:
	Nonaccrual loans	$	105		$	82		$	188
	Plus: Accruing TDRs	45			8			52
	Less: Smaller balance nonaccrual loans evaluated collectively when determining the allowance for loan losses	(11		)	(57		)	(67		)
	Total impaired loans(1)	$	139		$	33		$	172
	(1)	Includes nonaccrual purchased credit impaired loans.
Aging analysis of loans	'
	The following tables contain an aging analysis of our loans by class at the dates indicated:
		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)
	31-Mar-14
	Originated loans
	Commercial:
	Real estate	$	13		$	13		$	29		$	55		$	6,521		$	6,575		$	—
	Business	7			1			15			24			5,030			5,053			—
	Total commercial	21			14			44			79			11,550			11,629			—
	Consumer:
	Residential real estate	4			2			21			27			1,871			1,898			—
	Home equity	3			2			13			17			1,587			1,605			—
	Indirect auto	10			2			3			16			1,640			1,655			—
	Credit cards	2			1			3			6			300			306			3
	Other consumer	2			1			3			6			290			296			—
	Total consumer	21			8			43			73			5,687			5,760			3
	Total	$	42		$	22		$	87		$	151		$	17,237		$	17,389		$	3
	Acquired loans
	Commercial:
	Real estate	$	3		$	1		$	42		$	46		$	1,246		$	1,292		$	42
	Business	1			1			9			11			406			417			5
	Total commercial	4			2			51			57			1,652			1,709			46
	Consumer:
	Residential real estate	14			9			64			88			1,403			1,491			64
	Home equity	9			3			22			34			1,128			1,162			6
	Total consumer	23			12			87			122			2,531			2,653			70
	Total	$	28		$	14		$	137		$	179		$	4,183		$	4,362		$	116
	31-Dec-13
	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
	(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.
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 the dates indicated:
		Real estate			Business			Total			Percent of total
	31-Mar-14
	Originated loans:
	Pass	$	6,237		$	4,695		$	10,931		94	%
	Criticized:(1)
	Accrual	298			323			621			5.3
	Nonaccrual	41			35			77			0.7
	Total criticized	339			359			698			6
	Total	$	6,575		$	5,053		$	11,629		100	%
	Acquired loans:
	Pass	$	1,131		$	360		$	1,491		87.3	%
	Criticized:(1)
	Accrual	162			48			209			12.2
	Nonaccrual	—			9			9			0.5
	Total criticized	162			57			218			12.7
	Total	$	1,292		$	417		$	1,709		100	%
	31-Dec-13
	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	%
	(1)	Includes special mention, substandard, doubtful, and loss, which are consistent with regulatory definitions, and as described in Item 1, “Business,” under “Asset Quality Review” in our Annual Report on 10-K for the year ended December 31, 2013.
Information about the credit quality of our consumer loan portfolio	'
	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 the dates indicated:
		Residential			Home equity			Indirect auto			Credit cards			Other			Total			Percent of
		real estate												consumer						total
	31-Mar-14
	Originated loans by refreshed FICO score:
	Over 700	$	1,628		$	1,315		$	1,069		$	206		$	170		$	4,388		76.2	%
	660-700	130			159			317			52			51			710			12.3
	620-660	63			65			157			24			27			335			5.8
	580-620	31			32			60			11			13			148			2.6
	Less than 580	37			30			53			8			15			143			2.5
	No score(1)	10			3			—			3			19			35			0.5
	Total	$	1,898		$	1,605		$	1,655		$	306		$	296		$	5,760		100	%
	Acquired loans by refreshed FICO score:
	Over 700	$	1,035		$	904		$	—		$	—		$	—		$	1,939		73.1	%
	660-700	108			100			—			—			—			207			7.8
	620-660	65			58			—			—			—			123			4.6
	580-620	54			40			—			—			—			94			3.5
	Less than 580	73			41			—			—			—			114			4.3
	No score(1)	156			19			—			—			—			175			6.6
	Total	$	1,491		$	1,162		$	—		$	—		$	—		$	2,653		100	%
	31-Dec-13
	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	%
	(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 the dates indicated:
		March 31,			December 31,
		2014			2013
	Aggregate recorded investment of impaired loans with terms modified through a troubled debt restructuring:
	Accruing interest	$	56		$	52
	Nonaccrual	46			56
	Total troubled debt restructurings (1)	$	102		$	108
	(1)	Includes 74 and 40 acquired loans that were restructured with a recorded investment of $4 million and $1 million at March 31, 2014 and December 31, 2013, respectively.
Information about residential mortgage banking activities	'
	The following table provides information about our residential mortgage banking activities at the dates indicated:
		March 31,
		2014			2013
	Mortgages serviced for others	$	3,713		$	3,157
	Mortgage servicing asset recorded for loans serviced for others, net	36			28

Derivative_Financial_Instrumen1

Derivative Financial Instruments (Tables)	3 Months Ended
	Mar. 31, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'
Derivative financial instruments	'
	The following table presents information regarding our derivative financial instruments at the dates indicated:
		Asset derivatives				Liability derivatives
		Notional		Fair value  (1)		Notional		Fair value  (2)
		amount				amount
	31-Mar-14
	Derivatives designated as hedging instruments:
	Interest rate swap agreements	$	11	$	—	$	24	$	1
	Derivatives not designated as hedging instruments:
	Interest rate swap agreements	3,172		70		3,204		71
	Total derivatives	$	3,183	$	70	$	3,228	$	72
	31-Dec-13
	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
	(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.

Earnings_Per_Share_Tables

Earnings Per Share (Tables)	3 Months Ended
	Mar. 31, 2014
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 periods indicated:
		Three months ended March 31,
		2014			2013
	Net income available to common stockholders	$	52		$	60
	Less income allocable to unvested restricted stock awards	—			—
	Net income allocable to common stockholders	$	52		$	60
	Weighted average common shares outstanding:
	Total shares issued	366			366
	Unallocated employee stock ownership plan shares	(2		)	(2		)
	Unvested restricted stock awards	(2		)	(1		)
	Treasury shares	(12		)	(13		)
	Total basic weighted average common shares outstanding	350			349
	Effect of dilutive stock-based awards	2			1
	Total diluted weighted average common shares outstanding	351			350
	Basic earnings per common share	$	0.15		$	0.17
	Diluted earnings per common share	$	0.15		$	0.17
	Anti-dilutive stock-based awards excluded from the diluted weighted average common share calculations	11			11

Other_Comprehensive_Income_Tab

Other Comprehensive Income (Tables)	3 Months Ended
	Mar. 31, 2014
Equity [Abstract]	'
Schedule of Comprehensive Income (Loss)	'
	The following table presents the activity in our Other Comprehensive Income for the periods indicated:
		Pretax			Income taxes			Net
	Three months ended March 31, 2014
	Securities available for sale:
	Net unrealized holding gains arising during the year	$	14		$	5		$	9
	Net unrealized holding gains on securities transferred between available for sale and held to maturity:
	Amortization of net unrealized holding gains to income during the year	(3		)	(1		)	(2		)	(1)
	Total other comprehensive income	$	11		$	4		$	7
	Three months ended March 31, 2013
	Securities available for sale:
	Net unrealized holding losses arising during the year	$	(19	)	$	(7	)	$	(12	)
	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	(74		)	(28		)	(46		)
	Net unrealized holding gains on securities transferred between available for sale and held to maturity:
	Net unrealized holding gains transferred during the period	55			21			34
	Less: amortization of net unrealized holding gains to income during the year	(1		)	—			(1		)	(1)
	Net unrealized holding gains on securities transferred during the year	54			21			33
	Total other comprehensive loss	$	(19	)	$	(7	)	$	(12	)
	(1)	Included in Interest income on investment securities and other 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 (losses) on			Unrealized loss 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, 2014	$	64		$	20		$	(6	)	$	(16	)	$	62
	Period change, net of tax	9			(2		)	—			—			7
	Balance, March 31, 2014	$	73		$	18		$	(5	)	$	(16	)	$	69
	Balance, January 1, 2013	$	207		$	(2	)	$	(6	)	$	(41	)	$	157
	Period change, net of tax	(46		)	33			—			—			(12		)
	Balance, March 31, 2013	$	161		$	32		$	(6	)	$	(41	)	$	145

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2014
Fair Value Disclosures [Abstract]	'
Fair value option quantitative disclosures	'
		March 31,		December 31,
		2014		2013
	Fair value carrying amount	$	34	$	50
	Aggregate unpaid principal balance	1		1
	Fair value carrying amount less aggregate unpaid principal balance	$	34	$	49
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 the dates indicated:
		Fair Value Measurements
		Total		Level 1			Level 2			Level 3
	31-Mar-14
	Assets:
	Investment securities available for sale:
	Debt securities:
	States and political subdivisions	$	519	$	—		$	519		$	—
	U.S. Treasury	20		20			—			—
	U.S. government sponsored enterprises	266		—			266			—
	Corporate	864		—			860			4
	Total debt securities	1,670		20			1,646			4
	Mortgage-backed securities:
	Residential mortgage-backed securities:
	Government National Mortgage Association	38		—			38			—
	Federal National Mortgage Association	131		—			131			—
	Federal Home Loan Mortgage Corporation	149		—			149			—
	Collateralized mortgage obligations:
	Federal National Mortgage Association	742		—			742			—
	Federal Home Loan Mortgage Corporation	374		—			374			—
	Non-agency issued	11		—			11			—
	Total collateralized mortgage obligations	1,127		—			1,127			—
	Total residential mortgage-backed securities	1,446		—			1,446			—
	Commercial mortgage-backed securities, non-agency issued	1,709		—			1,709			—
	Total mortgage-backed securities	3,154		—			3,154			—
	Collateralized loan obligations, non-agency issued	1,366		—			1,366			—
	Asset-backed securities collateralized by:
	Student loans	310		—			310			—
	Credit cards	72		—			72			—
	Auto loans	325		—			325			—
	Other	138		—			138			—
	Total asset-backed securities	846		—			846			—
	Other	23		22			1			—
	Total securities available for sale	7,060		43			7,013			4
	Loans held for sale (1)	34		—			34			—
	Derivatives	47		—			47			—
	Total assets	$	7,142	$	43		$	7,095		$	4
	Liabilities:
	Derivatives	$	48	$	—		$	48		$	—
	(1)	Represents loans for which we have elected the fair value option
		Fair Value Measurements
		Total		Level 1			Level 2			Level 3
	31-Dec-13
	Assets:
	Investment securities available for sale:
	Debt securities:
	States and political subdivisions	$	529	$	—		$	529		$	—
	U.S. Treasury	20		20			—			—
	U.S. government sponsored enterprises	312		—			312			—
	Corporate	872		—			868			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
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 periods indicated:
		Fair Value Measurements											Total gains
		Total		Level 1			Level 2			Level 3			(losses)
	Three months ended March 31, 2014
	Collateral dependent impaired loans	$	26	$	—		$	20		$	6		$	(2	)
	Three months ended March 31, 2013
	Collateral dependent impaired loans	$	42	$	—		$	29		$	13		$	(5	)
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 periods indicated:
		Three months ended March 31,
		2014			2013
		Trust			Trust			Collateralized			Total
		preferred			preferred			loan obligations
		securities			securities
	Balance at beginning of period	$	4		$	14		$	1,545		$	1,559
	Purchases	—			—			45			45
	Gains included in other comprehensive income	—			1			14			14
	Balance at end of period	$	4		$	15		$	1,603		$	1,618
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, at the dates indicated are as follows:
		31-Mar-14									31-Dec-13
		Carrying value		Estimated fair			Fair value				Carrying value			Estimated fair		Fair value
				value			level							value		level
	Financial assets:
	Cash and cash equivalents	$	503	$	503		1				$	463		$	463	1
	Investment securities available for sale	7,060		7,060			1,2,3		(1)		7,423			7,423		1,2,3	(1)
	Investment securities held to maturity	4,467		4,427			2				4,042			3,988		2
	Federal Home Loan Bank and Federal Reserve Bank common stock	438		438			2				469			469		2
	Loans held for sale	34		34			2				50			50		2
	Loans and leases, net	21,536		22,062			2,3		(2)		21,230			21,774		2,3	(2)
	Derivatives	47		47			2				49			49		2
	Accrued interest receivable	106		106			2				103			103		2
	Financial liabilities:
	Deposits	$	27,598	$	27,621		2				$	26,665		$	26,695	2
	Borrowings	4,871		4,905			2				5,556			5,599		2
	Derivatives	48		48			2				50			50		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 of collateral dependent impaired loans without significant adjustments made to appraised values at March 31, 2014 and December 31, 2013. All other loans and leases are classified as level 3.

Segment_Information_Tables

Segment Information (Tables)	3 Months Ended
	Mar. 31, 2014
Segment Reporting [Abstract]	'
Financial information of business segments	'
	Selected financial information for our segments follows for the periods indicated:
		Banking		Financial		Consolidated
				services		total
	Three months ended March 31, 2014
	Net interest income	$	271	$	—	$	271
	Provision for credit losses	25		—		25
	Net interest income after provision for credit losses	246		—		246
	Noninterest income	61		16		77
	Amortization of intangibles	7		1		8
	Other noninterest expense	227		14		241
	Income before income taxes	73		1		74
	Income tax expense	14		—		14
	Net income	$	59	$	1	$	59
	Three months ended March 31, 2013
	Net interest income	$	266	$	—	$	266
	Provision for credit losses	20		—		20
	Net interest income after provision for credit losses	246		—		246
	Noninterest income	73		16		89
	Amortization of intangibles	13		1		14
	Other noninterest expense	211		13		224
	Income before income taxes	95		3		98
	Income tax expense	29		1		30
	Net income	$	66	$	2	$	67

Investment_Securities_Availabl

Investment Securities - Available for Sale and Held to Maturity Securities (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Schedule of available for sale securities [Line Items]	'	'
Amortized cost for securities available for sale	$6,942	$7,319
Securities available for sale, unrealized gains	178	178
Securities available for sale, unrealized losses	-60	-74
Securities available for sale, fair value	7,060	7,423
Securities held to maturity, amortized cost	4,467	4,042
Securities held to maturity, unrealized gains	43	40
Securities held to maturity, unrealized losses	-83	-94
Securities held to maturity, fair value	4,427	3,988
Residential mortgage-backed securities [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Securities held to maturity, amortized cost	4,447	4,037
Securities held to maturity, unrealized gains	43	40
Securities held to maturity, unrealized losses	-83	-94
Securities held to maturity, fair value	4,407	3,983
Collateralized mortgage obligations [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Securities held to maturity, amortized cost	4,215	3,793
Securities held to maturity, unrealized gains	42	39
Securities held to maturity, unrealized losses	-79	-90
Securities held to maturity, fair value	4,178	3,742
Government National Mortgage Association [Member] | Residential mortgage-backed securities [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Securities held to maturity, amortized cost	16	17
Securities held to maturity, unrealized gains	0	0
Securities held to maturity, unrealized losses	0	0
Securities held to maturity, fair value	16	17
Government National Mortgage Association [Member] | Collateralized mortgage obligations [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Securities held to maturity, amortized cost	2,041	1,713
Securities held to maturity, unrealized gains	25	26
Securities held to maturity, unrealized losses	-15	-12
Securities held to maturity, fair value	2,052	1,727
Federal National Mortgage Association [Member] | Residential mortgage-backed securities [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Securities held to maturity, amortized cost	139	146
Securities held to maturity, unrealized gains	0	0
Securities held to maturity, unrealized losses	-3	-3
Securities held to maturity, fair value	137	143
Federal National Mortgage Association [Member] | Collateralized mortgage obligations [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Securities held to maturity, amortized cost	1,117	1,074
Securities held to maturity, unrealized gains	1	0
Securities held to maturity, unrealized losses	-37	-47
Securities held to maturity, fair value	1,081	1,027
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	77	81
Securities held to maturity, unrealized gains	0	0
Securities held to maturity, unrealized losses	-1	-1
Securities held to maturity, fair value	76	81
Federal Home Loan Mortgage Corporation [Member] | Collateralized mortgage obligations [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Securities held to maturity, amortized cost	1,057	1,007
Securities held to maturity, unrealized gains	16	12
Securities held to maturity, unrealized losses	-27	-30
Securities held to maturity, fair value	1,045	989
U.S. government agencies debt securities [Member] | Debt Securities [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Securities held to maturity, amortized cost	20	5
Securities held to maturity, unrealized gains	0	0
Securities held to maturity, unrealized losses	0	0
Securities held to maturity, fair value	20	5
Debt securities [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Amortized cost for securities available for sale	1,636	1,705
Securities available for sale, unrealized gains	42	40
Securities available for sale, unrealized losses	-7	-12
Securities available for sale, fair value	1,670	1,734
Debt securities [Member] | States and political subdivisions [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Amortized cost for securities available for sale	506	516
Securities available for sale, unrealized gains	13	14
Securities available for sale, unrealized losses	0	0
Securities available for sale, fair value	519	529
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	0
Securities available for sale, unrealized losses	0	0
Securities available for sale, fair value	20	20
Debt securities [Member] | U.S. government sponsored enterprises [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Amortized cost for securities available for sale	261	306
Securities available for sale, unrealized gains	6	7
Securities available for sale, unrealized losses	-1	-1
Securities available for sale, fair value	266	312
Debt securities [Member] | Corporate [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Amortized cost for securities available for sale	849	863
Securities available for sale, unrealized gains	22	19
Securities available for sale, unrealized losses	-7	-11
Securities available for sale, fair value	864	872
Mortgage-backed securities [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Amortized cost for securities available for sale	3,118	3,294
Securities available for sale, unrealized gains	86	85
Securities available for sale, unrealized losses	-50	-58
Securities available for sale, fair value	3,154	3,321
Residential mortgage-backed securities [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Amortized cost for securities available for sale	1,484	1,534
Securities available for sale, unrealized gains	11	12
Securities available for sale, unrealized losses	-49	-56
Securities available for sale, fair value	1,446	1,490
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	40	41
Securities available for sale, unrealized gains	1	1
Securities available for sale, unrealized losses	-2	-2
Securities available for sale, fair value	38	40
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	127	134
Securities available for sale, unrealized gains	5	5
Securities available for sale, unrealized losses	0	0
Securities available for sale, fair value	131	139
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	145	154
Securities available for sale, unrealized gains	5	5
Securities available for sale, unrealized losses	0	0
Securities available for sale, fair value	149	159
Collateralized mortgage obligations [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Amortized cost for securities available for sale	1,174	1,205
Securities available for sale, unrealized gains	1	1
Securities available for sale, unrealized losses	-48	-54
Securities available for sale, fair value	1,127	1,152
Collateralized mortgage obligations [Member] | Federal National Mortgage Association [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Amortized cost for securities available for sale	776	797
Securities available for sale, unrealized gains	0	0
Securities available for sale, unrealized losses	-34	-36
Securities available for sale, fair value	742	761
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	387	396
Securities available for sale, unrealized gains	0	0
Securities available for sale, unrealized losses	-13	-17
Securities available for sale, fair value	374	379
Collateralized mortgage obligations [Member] | Non-agency issued [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Amortized cost for securities available for sale	11	12
Securities available for sale, unrealized gains	0	1
Securities available for sale, unrealized losses	0	0
Securities available for sale, fair value	11	13
Commercial mortgage-backed securities, non-agency issued [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Amortized cost for securities available for sale	1,634	1,759
Securities available for sale, unrealized gains	76	74
Securities available for sale, unrealized losses	-1	-2
Securities available for sale, fair value	1,709	1,831
Collateralized loan obligations, non-agency issued [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Amortized cost for securities available for sale	1,331	1,392
Securities available for sale, unrealized gains	36	40
Securities available for sale, unrealized losses	-1	-2
Securities available for sale, fair value	1,366	1,431
Asset-backed securities [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Amortized cost for securities available for sale	833	896
Securities available for sale, unrealized gains	15	11
Securities available for sale, unrealized losses	-2	-2
Securities available for sale, fair value	846	905
Asset-backed securities [Member] | Student Loans [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Amortized cost for securities available for sale	301	306
Securities available for sale, unrealized gains	9	6
Securities available for sale, unrealized losses	0	0
Securities available for sale, fair value	310	312
Asset-backed securities [Member] | Credit cards [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Amortized cost for securities available for sale	73	73
Securities available for sale, unrealized gains	0	0
Securities available for sale, unrealized losses	0	-1
Securities available for sale, fair value	72	73
Asset-backed securities [Member] | Auto Loans [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Amortized cost for securities available for sale	321	331
Securities available for sale, unrealized gains	4	4
Securities available for sale, unrealized losses	0	0
Securities available for sale, fair value	325	335
Asset-backed securities [Member] | Other [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Amortized cost for securities available for sale	138	186
Securities available for sale, unrealized gains	1	1
Securities available for sale, unrealized losses	-1	-1
Securities available for sale, fair value	138	186
Other securities [Member]	'	'
Schedule of available for sale securities [Line Items]	'	'
Amortized cost for securities available for sale	23	33
Securities available for sale, unrealized gains	0	1
Securities available for sale, unrealized losses	0	0
Securities available for sale, fair value	$23	$33

Investment_Securities_Availabl1

Investment Securities - Available for Sale and Held to Maturity Securities Continuous Unrealized Loss Position (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
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	$1,701	$2,054
Unrealized losses of available for sale securities in unrealized loss position less than 12 months	-54	-69
Available for sale securities in unrealized loss position less than 12 months, count	245	341
Fair value of available for sale securities in unrealized loss position 12 months or longer	141	122
Unrealized losses of available for sale securities in unrealized loss position 12 months or longer	-7	-5
Available for sale securities in unrealized loss positions 12 months or longer, count	48	47
Total fair value available for sale securities	1,843	2,176
Total unrealized losses, available for sale securities	-60	-74
Available for sale securities in unrealized loss positions, count	293	388
Fair value of held to maturity securities in unrealized loss position less than 12 months	2,493	2,353
Unrealized losses of held to maturity securities in unrealized loss position less than 12 months	-79	-94
Held to maturity securities in unrealized loss position less than 12 months, count	228	202
Fair value of held to maturity securities in unrealized loss position 12 months or longer	98	22
Unrealized losses of held to maturity securities in unrealized loss position 12 months or longer	-4	-1
Held to maturity securities in unrealized loss positions longer than 12 months, count	5	1
Total fair value of held to maturity securities	2,591	2,376
Total unrealized losses of held to maturity securities	-83	-94
Held to maturity securities in unrealized loss positions, count	233	203
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	2,483	2,348
Unrealized losses of held to maturity securities in unrealized loss position less than 12 months	-79	-94
Held to maturity securities in unrealized loss position less than 12 months, count	226	201
Fair value of held to maturity securities in unrealized loss position 12 months or longer	98	22
Unrealized losses of held to maturity securities in unrealized loss position 12 months or longer	-4	-1
Held to maturity securities in unrealized loss positions longer than 12 months, count	5	1
Total fair value of held to maturity securities	2,581	2,371
Total unrealized losses of held to maturity securities	-83	-94
Held to maturity securities in unrealized loss positions, count	231	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	2,292	2,160
Unrealized losses of held to maturity securities in unrealized loss position less than 12 months	-75	-89
Held to maturity securities in unrealized loss position less than 12 months, count	170	152
Fair value of held to maturity securities in unrealized loss position 12 months or longer	98	22
Unrealized losses of held to maturity securities in unrealized loss position 12 months or longer	-4	-1
Held to maturity securities in unrealized loss positions longer than 12 months, count	5	1
Total fair value of held to maturity securities	2,390	2,182
Total unrealized losses of held to maturity securities	-79	-90
Held to maturity securities in unrealized loss positions, count	175	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	10	11
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	4
Fair value of 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 maturity securities in unrealized loss positions longer than 12 months, count	0	0
Total fair value of held to maturity securities	10	11
Total unrealized losses of held to maturity securities	0	0
Held to maturity securities in unrealized loss positions, count	4	4
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	830	520
Unrealized losses of held to maturity securities in unrealized loss position less than 12 months	-15	-12
Held to maturity securities in unrealized loss position less than 12 months, count	80	58
Fair value of 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 maturity securities in unrealized loss positions longer than 12 months, count	0	0
Total fair value of held to maturity securities	830	520
Total unrealized losses of held to maturity securities	-15	-12
Held to maturity securities in unrealized loss positions, count	80	58
Federal National Mortgage Association Certificates and Obligations (FNMA) [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	124	119
Unrealized losses of held to maturity securities in unrealized loss position less than 12 months	-3	-3
Held to maturity securities in unrealized loss position less than 12 months, count	35	30
Fair value of 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 maturity securities in unrealized loss positions longer than 12 months, count	0	0
Total fair value of held to maturity securities	124	119
Total unrealized losses of held to maturity securities	-3	-3
Held to maturity securities in unrealized loss positions, count	35	30
Federal National Mortgage Association Certificates and Obligations (FNMA) [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	840	1,011
Unrealized losses of held to maturity securities in unrealized loss position less than 12 months	-35	-47
Held to maturity securities in unrealized loss position less than 12 months, count	51	59
Fair value of held to maturity securities in unrealized loss position 12 months or longer	66	0
Unrealized losses of held to maturity securities in unrealized loss position 12 months or longer	-3	0
Held to maturity securities in unrealized loss positions longer than 12 months, count	3	0
Total fair value of held to maturity securities	906	1,011
Total unrealized losses of held to maturity securities	-37	-47
Held to maturity securities in unrealized loss positions, count	54	59
Federal Home Loan Mortgage Corporation Certificates and Obligations (FHLMC) [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	57	59
Unrealized losses of held to maturity securities in unrealized loss position less than 12 months	-1	-1
Held to maturity securities in unrealized loss position less than 12 months, count	17	15
Fair value of 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 maturity securities in unrealized loss positions longer than 12 months, count	0	0
Total fair value of held to maturity securities	57	59
Total unrealized losses of held to maturity securities	-1	-1
Held to maturity securities in unrealized loss positions, count	17	15
Federal Home Loan Mortgage Corporation Certificates and Obligations (FHLMC) [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	622	629
Unrealized losses of held to maturity securities in unrealized loss position less than 12 months	-26	-30
Held to maturity securities in unrealized loss position less than 12 months, count	39	35
Fair value of held to maturity securities in unrealized loss position 12 months or longer	33	22
Unrealized losses of held to maturity securities in unrealized loss position 12 months or longer	-1	-1
Held to maturity securities in unrealized loss positions longer than 12 months, count	2	1
Total fair value of held to maturity securities	654	652
Total unrealized losses of held to maturity securities	-27	-30
Held to maturity securities in unrealized loss positions, count	41	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	239	315
Unrealized losses of available for sale securities in unrealized loss position less than 12 months	-5	-9
Available for sale securities in unrealized loss position less than 12 months, count	131	201
Fair value of available for sale securities in unrealized loss position 12 months or longer	57	79
Unrealized losses of available for sale securities in unrealized loss position 12 months or longer	-2	-2
Available for sale securities in unrealized loss positions 12 months or longer, count	32	32
Total fair value available for sale securities	296	394
Total unrealized losses, available for sale securities	-7	-12
Available for sale securities in unrealized loss positions, count	163	233
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	1,045	1,106
Unrealized losses of available for sale securities in unrealized loss position less than 12 months	-45	-54
Available for sale securities in unrealized loss position less than 12 months, count	60	63
Fair value of available for sale securities in unrealized loss position 12 months or longer	38	0
Unrealized losses of available for sale securities in unrealized loss position 12 months or longer	-2	0
Available for sale securities in unrealized loss positions 12 months or longer, count	3	0
Total fair value available for sale securities	1,083	1,106
Total unrealized losses, available for sale securities	-48	-54
Available for sale securities in unrealized loss positions, count	63	63
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	1,045	1,106
Unrealized losses of available for sale securities in unrealized loss position less than 12 months	-45	-54
Available for sale securities in unrealized loss position less than 12 months, count	62	66
Fair value of available for sale securities in unrealized loss position 12 months or longer	57	19
Unrealized losses of available for sale securities in unrealized loss position 12 months or longer	-4	-2
Available for sale securities in unrealized loss positions 12 months or longer, count	8	9
Total fair value available for sale securities	1,102	1,125
Total unrealized losses, available for sale securities	-49	-56
Available for sale securities in unrealized loss positions, count	70	75
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	54	158
Unrealized losses of available for sale securities in unrealized loss position less than 12 months	-1	-2
Available for sale securities in unrealized loss position less than 12 months, count	8	15
Fair value of available for sale securities in unrealized loss position 12 months or longer	0	12
Unrealized losses of available for sale securities in unrealized loss position 12 months or longer	0	0
Available for sale securities in unrealized loss positions 12 months or longer, count	1	3
Total fair value available for sale securities	55	170
Total unrealized losses, available for sale securities	-1	-2
Available for sale securities in unrealized loss positions, count	9	18
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	1,099	1,264
Unrealized losses of available for sale securities in unrealized loss position less than 12 months	-46	-56
Available for sale securities in unrealized loss position less than 12 months, count	70	81
Fair value of available for sale securities in unrealized loss position 12 months or longer	57	32
Unrealized losses of available for sale securities in unrealized loss position 12 months or longer	-4	-2
Available for sale securities in unrealized loss positions 12 months or longer, count	9	12
Total fair value available for sale securities	1,157	1,296
Total unrealized losses, available for sale securities	-50	-58
Available for sale securities in unrealized loss positions, count	79	93
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	240	261
Unrealized losses of available for sale securities in unrealized loss position less than 12 months	-1	-2
Available for sale securities in unrealized loss position less than 12 months, count	25	28
Fair value of available for sale securities in unrealized loss position 12 months or longer	9	3
Unrealized losses of available for sale securities in unrealized loss position 12 months or longer	0	0
Available for sale securities in unrealized loss positions 12 months or longer, count	2	1
Total fair value available for sale securities	249	264
Total unrealized losses, available for sale securities	-1	-2
Available for sale securities in unrealized loss positions, count	27	29
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	111	200
Unrealized losses of available for sale securities in unrealized loss position less than 12 months	-1	-2
Available for sale securities in unrealized loss position less than 12 months, count	16	28
Fair value of available for sale securities in unrealized loss position 12 months or longer	9	0
Unrealized losses of available for sale securities in unrealized loss position 12 months or longer	0	0
Available for sale securities in unrealized loss positions 12 months or longer, count	2	0
Total fair value available for sale securities	120	200
Total unrealized losses, available for sale securities	-2	-2
Available for sale securities in unrealized loss positions, count	18	28
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	12	14
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	3
Fair value of available for sale securities in unrealized loss position 12 months or longer	10	8
Unrealized losses of available for sale securities in unrealized loss position 12 months or longer	0	0
Available for sale securities in unrealized loss positions 12 months or longer, count	3	2
Total fair value available for sale securities	22	22
Total unrealized losses, available for sale securities	0	0
Available for sale securities in unrealized loss positions, count	6	5
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	16	67
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	4	8
Fair value of available for sale securities in unrealized loss position 12 months or longer	2	0
Unrealized losses of available for sale securities in unrealized loss position 12 months or longer	0	0
Available for sale securities in unrealized loss positions 12 months or longer, count	1	0
Total fair value available for sale securities	17	67
Total unrealized losses, available for sale securities	0	0
Available for sale securities in unrealized loss positions, count	5	8
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	36
Unrealized losses of available for sale securities in unrealized loss position less than 12 months	0	-1
Available for sale securities in unrealized loss position less than 12 months, count	4	4
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 months or longer	0	0
Available for sale securities in unrealized loss positions 12 months or longer, count	0	0
Total fair value available for sale securities	36	36
Total unrealized losses, available for sale securities	0	-1
Available for sale securities in unrealized loss positions, count	4	4
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	13	25
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	5
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 months or longer	0	0
Available for sale securities in unrealized loss positions 12 months or longer, count	0	0
Total fair value available for sale securities	13	25
Total unrealized losses, available for sale securities	0	0
Available for sale securities in unrealized loss positions, count	3	5
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	46	72
Unrealized losses of available for sale securities in unrealized loss position less than 12 months	-1	-1
Available for sale securities in unrealized loss position less than 12 months, count	5	11
Fair value of available for sale securities in unrealized loss position 12 months or longer	7	0
Unrealized losses of available for sale securities in unrealized loss position 12 months or longer	0	0
Available for sale securities in unrealized loss positions 12 months or longer, count	1	0
Total fair value available for sale securities	53	72
Total unrealized losses, available for sale securities	-1	-1
Available for sale securities in unrealized loss positions, count	6	11
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	13
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	25
Fair value of available for sale securities in unrealized loss position 12 months or longer	1	3
Unrealized losses of available for sale securities in unrealized loss position 12 months or longer	0	0
Available for sale securities in unrealized loss positions 12 months or longer, count	4	7
Total fair value available for sale securities	14	16
Total unrealized losses, available for sale securities	0	0
Available for sale securities in unrealized loss positions, count	29	32
US 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	10	5
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	2	1
Fair value of 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 maturity securities in unrealized loss positions longer than 12 months, count	0	0
Total fair value of held to maturity securities	10	5
Total unrealized losses of held to maturity securities	0	0
Held to maturity securities in unrealized loss positions, count	2	1
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	71	71
Unrealized losses of available for sale securities in unrealized loss position less than 12 months	-1	-1
Available for sale securities in unrealized loss position less than 12 months, count	12	11
Fair value of available for sale securities in unrealized loss position 12 months or longer	0	2
Unrealized losses of available for sale securities in unrealized loss position 12 months or longer	0	0
Available for sale securities in unrealized loss positions 12 months or longer, count	0	2
Total fair value available for sale securities	71	73
Total unrealized losses, available for sale securities	-1	-1
Available for sale securities in unrealized loss positions, count	12	13
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	154	232
Unrealized losses of available for sale securities in unrealized loss position less than 12 months	-4	-8
Available for sale securities in unrealized loss position less than 12 months, count	94	165
Fair value of available for sale securities in unrealized loss position 12 months or longer	56	74
Unrealized losses of available for sale securities in unrealized loss position 12 months or longer	-2	-2
Available for sale securities in unrealized loss positions 12 months or longer, count	28	23
Total fair value available for sale securities	210	306
Total unrealized losses, available for sale securities	-7	-11
Available for sale securities in unrealized loss positions, count	122	188
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	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	0	0
Fair value of available for sale securities in unrealized loss position 12 months or longer	19	19
Unrealized losses of available for sale securities in unrealized loss position 12 months or longer	-2	-2
Available for sale securities in unrealized loss positions 12 months or longer, count	5	6
Total fair value available for sale securities	19	19
Total unrealized losses, available for sale securities	-2	-2
Available for sale securities in unrealized loss positions, count	5	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	685	744
Unrealized losses of available for sale securities in unrealized loss position less than 12 months	-32	-36
Available for sale securities in unrealized loss position less than 12 months, count	38	41
Fair value of available for sale securities in unrealized loss position 12 months or longer	38	0
Unrealized losses of available for sale securities in unrealized loss position 12 months or longer	-2	0
Available for sale securities in unrealized loss positions 12 months or longer, count	3	0
Total fair value available for sale securities	723	744
Total unrealized losses, available for sale securities	-34	-36
Available for sale securities in unrealized loss positions, count	41	41
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	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	2	3
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 months or longer	0	0
Available for sale securities in unrealized loss positions 12 months or longer, count	0	3
Total fair value available for sale securities	0	1
Total unrealized losses, available for sale securities	0	0
Available for sale securities in unrealized loss positions, count	2	6
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	359	361
Unrealized losses of available for sale securities in unrealized loss position less than 12 months	-13	-17
Available for sale securities in unrealized loss position less than 12 months, count	18	19
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 months or longer	0	0
Available for sale securities in unrealized loss positions 12 months or longer, count	0	0
Total fair value available for sale securities	359	361
Total unrealized losses, available for sale securities	-13	-17
Available for sale securities in unrealized loss positions, count	18	19
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	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	4	3
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 months or longer	0	0
Available for sale securities in unrealized loss positions 12 months or longer, count	0	0
Total fair value available for sale securities	1	1
Total unrealized losses, available for sale securities	$0	$0
Available for sale securities in unrealized loss positions, count	4	3

Investment_Securities_Maturiti

Investment Securities - Maturities of Available for Sale and Held to Maturity Debt Securities (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Scheduled contractual maturies of investment securities [Line Items]	'	'
Debt securities, amortized cost within one year	$162	'
Debt securities, fair value within one year	163	'
Debt securities, amortized cost after one year through five years	864	'
Debt securities, fair value after one year through five years	889	'
Debt securities, amortized cost after five years through ten years	619	'
Debt securities, fair value after five years through ten years	627	'
Debt securities, amortized cost after ten years	11	'
Debt securities, fair value after ten years	10	'
Debt securities, amortized cost	1,656	'
Debt securities, fair value	1,690	'
Mortgage-backed securities, amortized cost	7,566	'
Mortgage-backed securities, fair value	7,562	'
Available for sale securities, amortized cost	6,942	7,319
Investment securities available for sale	7,060	7,423
Total available for sale and held to maturity securities, amortized cost	11,410	'
Total available for sale and held to maturity securities, fair value	11,488	'
Collateralized loan obligations, non-agency issued [Member]	'	'
Scheduled contractual maturies of investment securities [Line Items]	'	'
Available for sale securities, amortized cost	1,331	1,392
Investment securities available for sale	1,366	1,431
Asset-backed securities [Member]	'	'
Scheduled contractual maturies of investment securities [Line Items]	'	'
Available for sale securities, amortized cost	833	896
Investment securities available for sale	846	905
Other securities [Member]	'	'
Scheduled contractual maturies of investment securities [Line Items]	'	'
Available for sale securities, amortized cost	23	33
Investment securities available for sale	$23	$33

Investment_Securities_Details_

Investment Securities (Details Textual)	3 Months Ended	12 Months Ended
	Mar. 31, 2014	Dec. 31, 2013
Investment Securities (Additional Textual) [Abstract]	'	'
Contractual maturity period of securities (in years)	'10 years	'
Weighted average duration investment securities portfolio (in years)	'3 years 8 months	'3 years 6 months

Loans_and_Leases_Composition_D

Loans and Leases - Composition (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2013
In Millions, unless otherwise specified
Summary of loans and leases	'	'	'
Loans receivable	$21,751	$21,440	'
Allowance for loan losses	-215	-209	'
Total loans and leases, net	21,536	21,230	'
Total commercial [Member]	'	'	'
Summary of loans and leases	'	'	'
Loans receivable	13,338	13,068	'
Total commercial [Member] | Commercial real estate [Member]	'	'	'
Summary of loans and leases	'	'	'
Loans receivable	6,818	6,914	'
Total commercial [Member] | Construction [Member]	'	'	'
Summary of loans and leases	'	'	'
Loans receivable	1,050	864	'
Total commercial [Member] | Business [Member]	'	'	'
Summary of loans and leases	'	'	'
Loans receivable	5,470	5,290	'
Total consumer [Member]	'	'	'
Summary of loans and leases	'	'	'
Loans receivable	8,413	8,371	'
Total consumer [Member] | Residential real estate [Member]	'	'	'
Summary of loans and leases	'	'	'
Loans receivable	3,389	3,448	'
Total consumer [Member] | Home equity [Member]	'	'	'
Summary of loans and leases	'	'	'
Loans receivable	2,767	2,752	'
Total consumer [Member] | Indirect auto [Member]	'	'	'
Summary of loans and leases	'	'	'
Loans receivable	1,655	1,544	'
Total consumer [Member] | Credit cards [Member]	'	'	'
Summary of loans and leases	'	'	'
Loans receivable	306	325	'
Total consumer [Member] | Other consumer [Member]	'	'	'
Summary of loans and leases	'	'	'
Loans receivable	296	302	'
Originated loans [Member]	'	'	'
Summary of loans and leases	'	'	'
Loans receivable	17,389	16,922	14,100
Allowance for loan losses	-211	-205	'
Total loans and leases, net	17,178	16,717	'
Originated loans [Member] | Total commercial [Member]	'	'	'
Summary of loans and leases	'	'	'
Loans receivable	11,629	11,231	'
Originated loans [Member] | Total commercial [Member] | Commercial real estate [Member]	'	'	'
Summary of loans and leases	'	'	'
Loans receivable	5,549	5,527	'
Originated loans [Member] | Total commercial [Member] | Construction [Member]	'	'	'
Summary of loans and leases	'	'	'
Loans receivable	1,027	828	'
Originated loans [Member] | Total commercial [Member] | Business [Member]	'	'	'
Summary of loans and leases	'	'	'
Loans receivable	5,053	4,876	4,407
Originated loans [Member] | Total consumer [Member]	'	'	'
Summary of loans and leases	'	'	'
Loans receivable	5,760	5,691	'
Originated loans [Member] | Total consumer [Member] | Residential real estate [Member]	'	'	'
Summary of loans and leases	'	'	'
Loans receivable	1,898	1,902	1,709
Originated loans [Member] | Total consumer [Member] | Home equity [Member]	'	'	'
Summary of loans and leases	'	'	'
Loans receivable	1,605	1,618	1,338
Originated loans [Member] | Total consumer [Member] | Indirect auto [Member]	'	'	'
Summary of loans and leases	'	'	'
Loans receivable	1,655	1,544	818
Originated loans [Member] | Total consumer [Member] | Credit cards [Member]	'	'	'
Summary of loans and leases	'	'	'
Loans receivable	306	325	'
Originated loans [Member] | Total consumer [Member] | Other consumer [Member]	'	'	'
Summary of loans and leases	'	'	'
Loans receivable	296	302	'
Acquired loans [Member]	'	'	'
Summary of loans and leases	'	'	'
Loans receivable	4,362	4,517	5,935
Allowance for loan losses	-4	-4	'
Total loans and leases, net	4,358	4,514	'
Acquired loans [Member] | Total commercial [Member]	'	'	'
Summary of loans and leases	'	'	'
Loans receivable	1,709	1,838	'
Acquired loans [Member] | Total commercial [Member] | Commercial real estate [Member]	'	'	'
Summary of loans and leases	'	'	'
Loans receivable	1,269	1,387	'
Acquired loans [Member] | Total commercial [Member] | Construction [Member]	'	'	'
Summary of loans and leases	'	'	'
Loans receivable	23	36	'
Acquired loans [Member] | Total commercial [Member] | Business [Member]	'	'	'
Summary of loans and leases	'	'	'
Loans receivable	417	414	637
Acquired loans [Member] | Total consumer [Member]	'	'	'
Summary of loans and leases	'	'	'
Loans receivable	2,653	2,680	'
Acquired loans [Member] | Total consumer [Member] | Residential real estate [Member]	'	'	'
Summary of loans and leases	'	'	'
Loans receivable	1,491	1,546	1,906
Acquired loans [Member] | Total consumer [Member] | Home equity [Member]	'	'	'
Summary of loans and leases	'	'	'
Loans receivable	1,162	1,134	1,308
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	0	'
Acquired loans [Member] | Total consumer [Member] | Other consumer [Member]	'	'	'
Summary of loans and leases	'	'	'
Loans receivable	$0	$0	'

Loans_and_Leases_Acquired_Loan

Loans and Leases - Acquired Loans (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
The outstanding principal balance and the related carrying amount of the acquired loans	'	'
Outstanding principal balance	$4,479	$4,640
Carrying amount	4,362	4,517
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	16	18
Carrying amount	10	12
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	3,094	3,301
Carrying amount	3,028	3,233
Other acquired loans [Member]	'	'
The outstanding principal balance and the related carrying amount of the acquired loans	'	'
Outstanding principal balance	1,369	1,321
Carrying amount	$1,324	$1,273

Loans_and_Leases_Accretable_Yi

Loans and Leases - Accretable Yield Rollforward(Details) (USD $)	3 Months Ended		12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014		Dec. 31, 2013
Changes in the accretable discount on loans acquired	'		'
Beginning balance	($851)		($1,057)
Net reclassifications from nonaccretable yield	-4		-15
Accretion	38		199
Other changes in nonaccretable yield	55	[1]	22	[1]
Ending balance	($762)		($851)
[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 $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Activity in the allowance for credit losses for the periods indicated	'	'	'
Total	$21,751	'	$21,440
Total commercial [Member]	'	'	'
Activity in the allowance for credit losses for the periods indicated	'	'	'
Total	13,338	'	13,068
Total commercial [Member] | Business [Member]	'	'	'
Activity in the allowance for credit losses for the periods indicated	'	'	'
Total	5,470	'	5,290
Total consumer [Member]	'	'	'
Activity in the allowance for credit losses for the periods indicated	'	'	'
Total	8,413	'	8,371
Total consumer [Member] | Residential real estate [Member]	'	'	'
Activity in the allowance for credit losses for the periods indicated	'	'	'
Total	3,389	'	3,448
Total consumer [Member] | Home equity [Member]	'	'	'
Activity in the allowance for credit losses for the periods indicated	'	'	'
Total	2,767	'	2,752
Total consumer [Member] | Indirect auto [Member]	'	'	'
Activity in the allowance for credit losses for the periods indicated	'	'	'
Total	1,655	'	1,544
Originated loans [Member]	'	'	'
Activity in the allowance for credit losses for the periods indicated	'	'	'
Balance at beginning of period	205	161	'
Provision for loan losses	21	19	'
Charge-offs	-20	-11	'
Recoveries	4	2	'
Balance at end of period	211	171	'
Individually evaluated for impairment	7	12	'
Collectively evaluated for impairment	204	159	'
Total	211	171	'
Loans receivables, individually evaluated for impairment	146	171	'
Loans receivables, collectively evaluated for impairment	17,242	13,930	'
Total	17,389	14,100	16,922
Originated loans [Member] | Total commercial [Member]	'	'	'
Activity in the allowance for credit losses for the periods indicated	'	'	'
Total	11,629	'	11,231
Originated loans [Member] | Total commercial [Member] | Commercial real estate [Member]	'	'	'
Activity in the allowance for credit losses for the periods indicated	'	'	'
Balance at beginning of period	47	38	'
Provision for loan losses	-5	5	'
Charge-offs	-1	-1	'
Recoveries	3	0	'
Balance at end of period	44	41	'
Individually evaluated for impairment	1	2	'
Collectively evaluated for impairment	42	40	'
Total	44	41	'
Loans receivables, individually evaluated for impairment	60	76	'
Loans receivables, collectively evaluated for impairment	6,515	5,255	'
Total	6,575	5,331	6,354
Originated loans [Member] | Total commercial [Member] | Business [Member]	'	'	'
Activity in the allowance for credit losses for the periods indicated	'	'	'
Balance at beginning of period	120	99	'
Provision for loan losses	16	3	'
Charge-offs	-10	-5	'
Recoveries	1	0	'
Balance at end of period	127	97	'
Individually evaluated for impairment	2	7	'
Collectively evaluated for impairment	125	91	'
Total	127	97	'
Loans receivables, individually evaluated for impairment	55	67	'
Loans receivables, collectively evaluated for impairment	4,998	4,340	'
Total	5,053	4,407	4,876
Originated loans [Member] | Total consumer [Member]	'	'	'
Activity in the allowance for credit losses for the periods indicated	'	'	'
Total	5,760	'	5,691
Originated loans [Member] | Total consumer [Member] | Residential real estate [Member]	'	'	'
Activity in the allowance for credit losses for the periods indicated	'	'	'
Balance at beginning of period	2	5	'
Provision for loan losses	0	0	'
Charge-offs	0	-1	'
Recoveries	0	0	'
Balance at end of period	2	4	'
Individually evaluated for impairment	1	1	'
Collectively evaluated for impairment	1	3	'
Total	2	4	'
Loans receivables, individually evaluated for impairment	20	20	'
Loans receivables, collectively evaluated for impairment	1,878	1,689	'
Total	1,898	1,709	1,902
Originated loans [Member] | Total consumer [Member] | Home equity [Member]	'	'	'
Activity in the allowance for credit losses for the periods indicated	'	'	'
Balance at beginning of period	7	5	'
Provision for loan losses	1	2	'
Charge-offs	-1	-1	'
Recoveries	0	0	'
Balance at end of period	8	6	'
Individually evaluated for impairment	3	3	'
Collectively evaluated for impairment	5	3	'
Total	8	6	'
Loans receivables, individually evaluated for impairment	6	6	'
Loans receivables, collectively evaluated for impairment	1,598	1,333	'
Total	1,605	1,338	1,618
Originated loans [Member] | Total consumer [Member] | Indirect auto [Member]	'	'	'
Activity in the allowance for credit losses for the periods indicated	'	'	'
Balance at beginning of period	10	3	'
Provision for loan losses	3	1	'
Charge-offs	-2	0	'
Recoveries	0	0	'
Balance at end of period	11	5	'
Individually evaluated for impairment	0	0	'
Collectively evaluated for impairment	11	5	'
Total	11	5	'
Loans receivables, individually evaluated for impairment	1	0	'
Loans receivables, collectively evaluated for impairment	1,654	818	'
Total	1,655	818	1,544
Originated loans [Member] | Total consumer [Member] | Credit cards [Member]	'	'	'
Activity in the allowance for credit losses for the periods indicated	'	'	'
Balance at beginning of period	13	7	'
Provision for loan losses	3	5	'
Charge-offs	-3	0	'
Recoveries	0	0	'
Balance at end of period	13	12	'
Individually evaluated for impairment	0	0	'
Collectively evaluated for impairment	13	12	'
Total	13	12	'
Loans receivables, individually evaluated for impairment	0	0	'
Loans receivables, collectively evaluated for impairment	306	264	'
Total	306	264	325
Originated loans [Member] | Total consumer [Member] | Other consumer [Member]	'	'	'
Activity in the allowance for credit losses for the periods indicated	'	'	'
Balance at beginning of period	6	5	'
Provision for loan losses	2	2	'
Charge-offs	-2	-2	'
Recoveries	0	0	'
Balance at end of period	5	5	'
Individually evaluated for impairment	0	0	'
Collectively evaluated for impairment	5	5	'
Total	5	5	'
Loans receivables, individually evaluated for impairment	2	2	'
Loans receivables, collectively evaluated for impairment	293	230	'
Total	296	232	302
Acquired loans [Member]	'	'	'
Activity in the allowance for credit losses for the periods indicated	'	'	'
Balance at beginning of period	4	2	'
Provision for loan losses	3	1	'
Charge-offs	-3	-1	'
Recoveries	0	0	'
Balance at end of period	4	1	'
Individually evaluated for impairment	0	0	'
Collectively evaluated for impairment	4	1	'
Total	4	1	'
Loans receivables, individually evaluated for impairment	11	12	'
Loans receivables, collectively evaluated for impairment	1,313	1,480	'
Loans acquired with deteriorated credit quality	3,038	4,443	'
Total	4,362	5,935	4,517
Acquired loans [Member] | Total commercial [Member]	'	'	'
Activity in the allowance for credit losses for the periods indicated	'	'	'
Total	1,709	'	1,838
Acquired loans [Member] | Total commercial [Member] | Commercial real estate [Member]	'	'	'
Activity in the allowance for credit losses for the periods indicated	'	'	'
Balance at beginning of period	0	0	'
Provision for loan losses	1	1	'
Charge-offs	-1	-1	'
Recoveries	0	0	'
Balance at end of period	0	0	'
Individually evaluated for impairment	0	0	'
Collectively evaluated for impairment	0	0	'
Total	0	0	'
Loans receivables, individually evaluated for impairment	0	1	'
Loans receivables, collectively evaluated for impairment	0	0	'
Loans acquired with deteriorated credit quality	1,292	1,963	'
Total	1,292	1,964	1,423
Acquired loans [Member] | Total commercial [Member] | Business [Member]	'	'	'
Activity in the allowance for credit losses for the periods indicated	'	'	'
Balance at beginning of period	0	0	'
Provision for loan losses	0	0	'
Charge-offs	0	0	'
Recoveries	0	0	'
Balance at end of period	0	0	'
Individually evaluated for impairment	0	0	'
Collectively evaluated for impairment	0	0	'
Total	0	0	'
Loans receivables, individually evaluated for impairment	7	8	'
Loans receivables, collectively evaluated for impairment	314	409	'
Loans acquired with deteriorated credit quality	95	220	'
Total	417	637	414
Acquired loans [Member] | Total consumer [Member]	'	'	'
Activity in the allowance for credit losses for the periods indicated	'	'	'
Total	2,653	'	2,680
Acquired loans [Member] | Total consumer [Member] | Residential real estate [Member]	'	'	'
Activity in the allowance for credit losses for the periods indicated	'	'	'
Balance at beginning of period	1	0	'
Provision for loan losses	0	0	'
Charge-offs	0	0	'
Recoveries	0	0	'
Balance at end of period	1	0	'
Individually evaluated for impairment	0	0	'
Collectively evaluated for impairment	1	0	'
Total	1	0	'
Loans receivables, individually evaluated for impairment	0	0	'
Loans receivables, collectively evaluated for impairment	0	0	'
Loans acquired with deteriorated credit quality	1,491	1,906	'
Total	1,491	1,906	1,546
Acquired loans [Member] | Total consumer [Member] | Home equity [Member]	'	'	'
Activity in the allowance for credit losses for the periods indicated	'	'	'
Balance at beginning of period	3	0	'
Provision for loan losses	2	0	'
Charge-offs	-2	0	'
Recoveries	0	0	'
Balance at end of period	3	0	'
Individually evaluated for impairment	0	0	'
Collectively evaluated for impairment	3	0	'
Total	3	0	'
Loans receivables, individually evaluated for impairment	4	3	'
Loans receivables, collectively evaluated for impairment	999	1,019	'
Loans acquired with deteriorated credit quality	160	286	'
Total	1,162	1,308	1,134
Acquired loans [Member] | Total consumer [Member] | Indirect auto [Member]	'	'	'
Activity in the allowance for credit losses for the periods indicated	'	'	'
Total	0	'	0
Acquired loans [Member] | Total consumer [Member] | Credit cards [Member]	'	'	'
Activity in the allowance for credit losses for the periods indicated	'	'	'
Balance at beginning of period	0	0	'
Provision for loan losses	0	0	'
Charge-offs	0	0	'
Recoveries	0	0	'
Balance at end of period	0	0	'
Individually evaluated for impairment	0	0	'
Collectively evaluated for impairment	0	0	'
Total	0	0	'
Loans receivables, individually evaluated for impairment	0	0	'
Loans receivables, collectively evaluated for impairment	0	34	'
Loans acquired with deteriorated credit quality	0	0	'
Total	0	34	0
Acquired loans [Member] | Total consumer [Member] | Other consumer [Member]	'	'	'
Activity in the allowance for credit losses for the periods indicated	'	'	'
Balance at beginning of period	0	1	'
Provision for loan losses	0	0	'
Charge-offs	0	0	'
Recoveries	0	0	'
Balance at end of period	0	1	'
Individually evaluated for impairment	0	0	'
Collectively evaluated for impairment	0	1	'
Total	0	1	'
Loans receivables, individually evaluated for impairment	0	0	'
Loans receivables, collectively evaluated for impairment	0	17	'
Loans acquired with deteriorated credit quality	0	67	'
Total	$0	$85	$0

Loans_and_Leases_Nonperforming

Loans and Leases - Nonperforming Loans (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Summary of nonaccruing loans	'	'
Nonaccruing loans	$173	$188
Total commercial [Member]	'	'
Summary of nonaccruing loans	'	'
Nonaccruing loans	86	105
Total commercial [Member] | Commercial real estate [Member]	'	'
Summary of nonaccruing loans	'	'
Nonaccruing loans	41	54
Total commercial [Member] | Business [Member]	'	'
Summary of nonaccruing loans	'	'
Nonaccruing loans	45	51
Total consumer [Member]	'	'
Summary of nonaccruing loans	'	'
Nonaccruing loans	87	82
Total consumer [Member] | Residential real estate [Member]	'	'
Summary of nonaccruing loans	'	'
Nonaccruing loans	33	31
Total consumer [Member] | Home equity [Member]	'	'
Summary of nonaccruing loans	'	'
Nonaccruing loans	41	39
Total consumer [Member] | Indirect auto [Member]	'	'
Summary of nonaccruing loans	'	'
Nonaccruing loans	8	6
Total consumer [Member] | Other consumer [Member]	'	'
Summary of nonaccruing loans	'	'
Nonaccruing loans	5	6
Originated loans [Member]	'	'
Summary of nonaccruing loans	'	'
Nonaccruing loans	142	157
Originated loans [Member] | Total commercial [Member]	'	'
Summary of nonaccruing loans	'	'
Nonaccruing loans	77	95
Originated loans [Member] | Total commercial [Member] | Commercial real estate [Member]	'	'
Summary of nonaccruing loans	'	'
Nonaccruing loans	41	53
Originated loans [Member] | Total commercial [Member] | Business [Member]	'	'
Summary of nonaccruing loans	'	'
Nonaccruing loans	35	42
Originated loans [Member] | Total consumer [Member]	'	'
Summary of nonaccruing loans	'	'
Nonaccruing loans	65	62
Originated loans [Member] | Total consumer [Member] | Residential real estate [Member]	'	'
Summary of nonaccruing loans	'	'
Nonaccruing loans	33	31
Originated loans [Member] | Total consumer [Member] | Home equity [Member]	'	'
Summary of nonaccruing loans	'	'
Nonaccruing loans	20	18
Originated loans [Member] | Total consumer [Member] | Indirect auto [Member]	'	'
Summary of nonaccruing loans	'	'
Nonaccruing loans	8	6
Originated loans [Member] | Total consumer [Member] | Other consumer [Member]	'	'
Summary of nonaccruing loans	'	'
Nonaccruing loans	5	6
Acquired loans [Member]	'	'
Summary of nonaccruing loans	'	'
Nonaccruing loans	31	30
Acquired loans [Member] | Total commercial [Member]	'	'
Summary of nonaccruing loans	'	'
Nonaccruing loans	9	10
Acquired loans [Member] | Total commercial [Member] | Commercial real estate [Member]	'	'
Summary of nonaccruing loans	'	'
Nonaccruing loans	0	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	21	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	21	20
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 $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Details of additional information on loans	'	'
Additional interest income that would have been recorded if nonaccrual were performing in accordance with original terms	$2	$2

Loans_and_Leases_Impaired_Loan

Loans and Leases - Impaired Loans (Details) (USD $)

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Dec. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Dec. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

In Millions, unless otherwise specified

Total commercial [Member]

Total commercial [Member]

Total commercial [Member]

Total commercial [Member]

Total commercial [Member]

Total commercial [Member]

Total consumer [Member]

Total consumer [Member]

Total consumer [Member]

Total consumer [Member]

Total consumer [Member]

Total consumer [Member]

Originated loans [Member]

Originated loans [Member]

Originated loans [Member]

Originated loans [Member]

Originated loans [Member]

Originated loans [Member]

Originated loans [Member]

Originated loans [Member]

Originated loans [Member]

Originated loans [Member]

Originated loans [Member]

Originated loans [Member]

Originated loans [Member]

Originated loans [Member]

Originated loans [Member]

Originated loans [Member]

Originated loans [Member]

Originated loans [Member]

Originated loans [Member]

Originated loans [Member]

Originated loans [Member]

Originated loans [Member]

Originated loans [Member]

Originated loans [Member]

Originated loans [Member]

Originated loans [Member]

Originated loans [Member]

Originated loans [Member]

Originated loans [Member]

Originated loans [Member]

Originated loans [Member]

Originated loans [Member]

Originated loans [Member]

Originated loans [Member]

Originated loans [Member]

Originated loans [Member]

Originated loans [Member]

Originated loans [Member]

Originated loans [Member]

Originated loans [Member]

Originated loans [Member]

Originated loans [Member]

Originated loans [Member]

Originated loans [Member]

Originated loans [Member]

Originated loans [Member]

Originated loans [Member]

Originated loans [Member]

Originated loans [Member]

Originated loans [Member]

Originated loans [Member]

Originated loans [Member]

Originated loans [Member]

Originated loans [Member]

Originated loans [Member]

Acquired loans [Member]

Acquired loans [Member]

Acquired loans [Member]

Acquired loans [Member]

Acquired loans [Member]

Acquired loans [Member]

Acquired loans [Member]

Acquired loans [Member]

Acquired loans [Member]

Acquired loans [Member]

Acquired loans [Member]

Acquired loans [Member]

Acquired loans [Member]

Acquired loans [Member]

Acquired loans [Member]

Acquired loans [Member]

Acquired loans [Member]

Acquired loans [Member]

Acquired loans [Member]

Acquired loans [Member]

Acquired loans [Member]

Acquired loans [Member]

Acquired loans [Member]

Acquired loans [Member]

Acquired loans [Member]

Acquired loans [Member]

Acquired loans [Member]

Acquired loans [Member]

Acquired loans [Member]

Acquired loans [Member]

Acquired loans [Member]

Acquired loans [Member]

With no related allowance recorded [Member]

With no related allowance recorded [Member]

With a related allowance recorded [Member]

With a related allowance recorded [Member]

With no related allowance recorded [Member]

With no related allowance recorded [Member]

With a related allowance recorded [Member]

With a related allowance recorded [Member]

With no related allowance recorded [Member]

With no related allowance recorded [Member]

With a related allowance recorded [Member]

With a related allowance recorded [Member]

Total commercial [Member]

Total commercial [Member]

Total commercial [Member]

Total commercial [Member]

Total commercial [Member]

Total commercial [Member]

Total commercial [Member]

Total commercial [Member]

Total commercial [Member]

Total commercial [Member]

Total commercial [Member]

Total commercial [Member]

Total commercial [Member]

Total commercial [Member]

Total commercial [Member]

Total commercial [Member]

Total commercial [Member]

Total consumer [Member]

Total consumer [Member]

Total consumer [Member]

Total consumer [Member]

Total consumer [Member]

Total consumer [Member]

Total consumer [Member]

Total consumer [Member]

Total consumer [Member]

Total consumer [Member]

Total consumer [Member]

Total consumer [Member]

Total consumer [Member]

Total consumer [Member]

Total consumer [Member]

Total consumer [Member]

Total consumer [Member]

Total consumer [Member]

Total consumer [Member]

Total consumer [Member]

Total consumer [Member]

Total consumer [Member]

Total consumer [Member]

Total consumer [Member]

Total consumer [Member]

Total consumer [Member]

Total consumer [Member]

Total consumer [Member]

Total consumer [Member]

Total consumer [Member]

Total consumer [Member]

With no related allowance recorded [Member]

With no related allowance recorded [Member]

Total commercial [Member]

Total commercial [Member]

Total commercial [Member]

Total commercial [Member]

Total commercial [Member]

Total commercial [Member]

Total commercial [Member]

Total commercial [Member]

Total commercial [Member]

Total commercial [Member]

Total commercial [Member]

Total commercial [Member]

Total consumer [Member]

Total consumer [Member]

Total consumer [Member]

Total consumer [Member]

Total consumer [Member]

Total consumer [Member]

Total consumer [Member]

Total consumer [Member]

Total consumer [Member]

Total consumer [Member]

Total consumer [Member]

Total consumer [Member]

Total consumer [Member]

Total consumer [Member]

Total consumer [Member]

Total consumer [Member]

Commercial real estate [Member]

Commercial real estate [Member]

Commercial real estate [Member]

Commercial real estate [Member]

Commercial real estate [Member]

Commercial real estate [Member]

Commercial real estate [Member]

Business [Member]

Business [Member]

Business [Member]

Business [Member]

Business [Member]

Business [Member]

Business [Member]

Residential real estate [Member]

Residential real estate [Member]

Residential real estate [Member]

Residential real estate [Member]

Residential real estate [Member]

Residential real estate [Member]

Residential real estate [Member]

Home equity [Member]

Home equity [Member]

Home equity [Member]

Home equity [Member]

Home equity [Member]

Home equity [Member]

Home equity [Member]

Indirect auto [Member]

Indirect auto [Member]

Indirect auto [Member]

Indirect auto [Member]

Indirect auto [Member]

Indirect auto [Member]

Indirect auto [Member]

Other consumer [Member]

Other consumer [Member]

Other consumer [Member]

Other consumer [Member]

Other consumer [Member]

Other consumer [Member]

Other consumer [Member]

With no related allowance recorded [Member]

With no related allowance recorded [Member]

Commercial real estate [Member]

Commercial real estate [Member]

Commercial real estate [Member]

Commercial real estate [Member]

Business [Member]

Business [Member]

Business [Member]

Business [Member]

With no related allowance recorded [Member]

With no related allowance recorded [Member]

Residential real estate [Member]

Residential real estate [Member]

Residential real estate [Member]

Residential real estate [Member]

Home equity [Member]

Home equity [Member]

Home equity [Member]

Home equity [Member]

Other consumer [Member]

Other consumer [Member]

Other consumer [Member]

Other consumer [Member]

With no related allowance recorded [Member]

With no related allowance recorded [Member]

With a related allowance recorded [Member]

With a related allowance recorded [Member]

With no related allowance recorded [Member]

With no related allowance recorded [Member]

With a related allowance recorded [Member]

With a related allowance recorded [Member]

With no related allowance recorded [Member]

With no related allowance recorded [Member]

With a related allowance recorded [Member]

With a related allowance recorded [Member]

With no related allowance recorded [Member]

With no related allowance recorded [Member]

With a related allowance recorded [Member]

With a related allowance recorded [Member]

With no related allowance recorded [Member]

With no related allowance recorded [Member]

With a related allowance recorded [Member]

With a related allowance recorded [Member]

With no related allowance recorded [Member]

With no related allowance recorded [Member]

With a related allowance recorded [Member]

With a related allowance recorded [Member]

With no related allowance recorded [Member]

With no related allowance recorded [Member]

With no related allowance recorded [Member]

With no related allowance recorded [Member]

With no related allowance recorded [Member]

With no related allowance recorded [Member]

With no related allowance recorded [Member]

With no related allowance recorded [Member]

With no related allowance recorded [Member]

With no related allowance recorded [Member]

Summary of impaired loans

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Recorded investment

$157

$172

$123

$139

$89

$103

$27

$28

$34

$33

$19

$18

$12

$14

$146

'

$163

$107

$121

$39

$42

$116

'

$131

$60

'

$72

$47

$48

$13

$24

$55

'

$59

$42

$55

$13

$4

$31

'

$32

$20

'

$20

$13

$12

$7

$8

$6

'

$8

$3

$4

$3

$4

$1

'

$1

$1

$1

$1

$1

$2

'

$3

$1

$1

$1

$1

'

'

$11

$10

'

'

$7

$8

'

'

$0

$1

'

'

$7

$7

'

'

$4

$1

'

'

$0

$0

'

'

$4

$1

'

'

$0

$0

Unpaid principal balance

'

'

'

'

131

146

31

41

'

'

20

20

13

16

196

'

222

152

166

44

57

162

'

187

79

'

97

62

63

17

35

83

'

90

69

84

14

6

34

'

36

22

'

21

14

12

8

9

8

'

10

4

5

4

5

2

'

2

1

1

1

1

3

'

3

1

1

1

1

'

'

14

14

'

'

8

12

'

'

0

4

'

'

8

8

'

'

5

2

'

'

0

0

'

'

5

2

'

'

0

0

Related allowance

'

'

'

'

0

0

3

5

'

'

0

0

4

4

7

'

9

0

0

7

9

3

'

5

1

'

4

0

0

1

4

2

'

2

0

0

2

2

4

'

4

1

'

1

0

0

1

1

3

'

3

0

0

3

3

0

'

0

0

0

0

0

0

'

0

0

0

0

0

'

'

0

0

'

'

0

0

'

'

0

0

'

'

0

0

'

'

0

0

'

'

0

0

'

'

0

0

'

'

0

0

Average recorded investment

'

'

'

'

'

'

'

'

'

'

'

'

'

'

148

173

'

'

'

'

'

117

145

'

62

77

'

'

'

'

'

55

68

'

'

'

'

'

31

27

'

20

20

'

'

'

'

'

6

6

'

'

'

'

'

2

0

'

'

'

'

'

2

2

'

'

'

'

'

11

12

'

'

8

9

'

'

0

1

'

'

8

8

'

'

4

3

'

'

0

0

'

'

4

3

'

'

0

0

'

'

Interest income recognized

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$1

$0

'

'

'

'

'

$1

$0

'

$0

$0

'

'

'

'

'

$0

$0

'

'

'

'

'

$0

$0

'

$0

$0

'

'

'

'

'

$0

$0

'

'

'

'

'

$0

$0

'

'

'

'

'

$0

$0

'

'

'

'

'

$0

$0

'

'

$0

$0

'

'

$0

$0

'

'

$0

$0

'

'

$0

$0

'

'

$0

$0

'

'

$0

$0

'

'

$0

$0

'

'

Loans_and_Leases_Reconciliatio

Loans and Leases - Reconciliation of Nonperforming Loans to Impaired Loans (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Reconciliation between nonaccrual loans and impaired loans [Line Items]	'	'
Nonaccrual loans	$173	$188
Plus: Accruing TDRs	56	52
Less : Smaller balance nonaccrual loans evaluated collectively when determining the allowance for loan losses	-71	-67
Total impaired loans	157	172
Total commercial [Member]	'	'
Reconciliation between nonaccrual loans and impaired loans [Line Items]	'	'
Nonaccrual loans	86	105
Plus: Accruing TDRs	48	45
Less : Smaller balance nonaccrual loans evaluated collectively when determining the allowance for loan losses	-11	-11
Total impaired loans	123	139
Total consumer [Member]	'	'
Reconciliation between nonaccrual loans and impaired loans [Line Items]	'	'
Nonaccrual loans	87	82
Plus: Accruing TDRs	8	8
Less : Smaller balance nonaccrual loans evaluated collectively when determining the allowance for loan losses	-61	-57
Total impaired loans	$34	$33

Loans_and_Leases_Past_Due_Agin

Loans and Leases - Past Due Aging Analysis (Details) (USD $)	Mar. 31, 2014		Dec. 31, 2013		Mar. 31, 2013
Aging analysis of loans	'		'		'
Total	$21,751,000,000		$21,440,000,000		'
Greater than 90 days and accruing	0		'		'
Total commercial [Member]	'		'		'
Aging analysis of loans	'		'		'
Total	13,338,000,000		13,068,000,000		'
Total commercial [Member] | Business [Member]	'		'		'
Aging analysis of loans	'		'		'
Total	5,470,000,000		5,290,000,000		'
Total consumer [Member]	'		'		'
Aging analysis of loans	'		'		'
Total	8,413,000,000		8,371,000,000		'
Total consumer [Member] | Residential real estate [Member]	'		'		'
Aging analysis of loans	'		'		'
Total	3,389,000,000		3,448,000,000		'
Total consumer [Member] | Home equity [Member]	'		'		'
Aging analysis of loans	'		'		'
Total	2,767,000,000		2,752,000,000		'
Total consumer [Member] | Indirect auto [Member]	'		'		'
Aging analysis of loans	'		'		'
Total	1,655,000,000		1,544,000,000		'
Originated loans [Member]	'		'		'
Aging analysis of loans	'		'		'
30-59 days past due	42,000,000		36,000,000		'
60-89 days past due	22,000,000		15,000,000		'
Greater than 90 days past due	87,000,000		90,000,000		'
Total past due	151,000,000		140,000,000		'
Current	17,237,000,000		16,782,000,000		'
Total	17,389,000,000		16,922,000,000		14,100,000,000
Greater than 90 days and accruing	3,000,000	[1]	3,000,000	[1]	'
Originated loans [Member] | Total commercial [Member]	'		'		'
Aging analysis of loans	'		'		'
30-59 days past due	21,000,000		9,000,000		'
60-89 days past due	14,000,000		5,000,000		'
Greater than 90 days past due	44,000,000		47,000,000		'
Total past due	79,000,000		61,000,000		'
Current	11,550,000,000		11,169,000,000		'
Total	11,629,000,000		11,231,000,000		'
Greater than 90 days and accruing	0	[1]	0	[1]	'
Originated loans [Member] | Total commercial [Member] | Commercial real estate [Member]	'		'		'
Aging analysis of loans	'		'		'
30-59 days past due	13,000,000		5,000,000		'
60-89 days past due	13,000,000		2,000,000		'
Greater than 90 days past due	29,000,000		27,000,000		'
Total past due	55,000,000		34,000,000		'
Current	6,521,000,000		6,321,000,000		'
Total	6,575,000,000		6,354,000,000		5,331,000,000
Greater than 90 days and accruing	0	[1]	0	[1]	'
Originated loans [Member] | Total commercial [Member] | Business [Member]	'		'		'
Aging analysis of loans	'		'		'
30-59 days past due	7,000,000		4,000,000		'
60-89 days past due	1,000,000		3,000,000		'
Greater than 90 days past due	15,000,000		20,000,000		'
Total past due	24,000,000		28,000,000		'
Current	5,030,000,000		4,849,000,000		'
Total	5,053,000,000		4,876,000,000		4,407,000,000
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	21,000,000		27,000,000		'
60-89 days past due	8,000,000		9,000,000		'
Greater than 90 days past due	43,000,000		43,000,000		'
Total past due	73,000,000		79,000,000		'
Current	5,687,000,000		5,613,000,000		'
Total	5,760,000,000		5,691,000,000		'
Greater than 90 days and accruing	3,000,000	[1]	3,000,000	[1]	'
Originated loans [Member] | Total consumer [Member] | Residential real estate [Member]	'		'		'
Aging analysis of loans	'		'		'
30-59 days past due	4,000,000		6,000,000		'
60-89 days past due	2,000,000		2,000,000		'
Greater than 90 days past due	21,000,000		21,000,000		'
Total past due	27,000,000		30,000,000		'
Current	1,871,000,000		1,872,000,000		'
Total	1,898,000,000		1,902,000,000		1,709,000,000
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	3,000,000		3,000,000		'
60-89 days past due	2,000,000		2,000,000		'
Greater than 90 days past due	13,000,000		12,000,000		'
Total past due	17,000,000		17,000,000		'
Current	1,587,000,000		1,601,000,000		'
Total	1,605,000,000		1,618,000,000		1,338,000,000
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	10,000,000		12,000,000		'
60-89 days past due	2,000,000		2,000,000		'
Greater than 90 days past due	3,000,000		3,000,000		'
Total past due	16,000,000		18,000,000		'
Current	1,640,000,000		1,526,000,000		'
Total	1,655,000,000		1,544,000,000		818,000,000
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	2,000,000		2,000,000		'
60-89 days past due	1,000,000		1,000,000		'
Greater than 90 days past due	3,000,000		3,000,000		'
Total past due	6,000,000		6,000,000		'
Current	300,000,000		319,000,000		'
Total	306,000,000		325,000,000		264,000,000
Greater than 90 days and accruing	3,000,000	[1]	3,000,000	[1]	'
Originated loans [Member] | Total consumer [Member] | Other consumer [Member]	'		'		'
Aging analysis of loans	'		'		'
30-59 days past due	2,000,000		3,000,000		'
60-89 days past due	1,000,000		1,000,000		'
Greater than 90 days past due	3,000,000		3,000,000		'
Total past due	6,000,000		7,000,000		'
Current	290,000,000		295,000,000		'
Total	296,000,000		302,000,000		232,000,000
Greater than 90 days and accruing	0	[1]	0	[1]	'
Acquired loans [Member]	'		'		'
Aging analysis of loans	'		'		'
30-59 days past due	28,000,000		35,000,000		'
60-89 days past due	14,000,000		23,000,000		'
Greater than 90 days past due	137,000,000		130,000,000		'
Total past due	179,000,000		188,000,000		'
Current	4,183,000,000		4,330,000,000		'
Total	4,362,000,000		4,517,000,000		5,935,000,000
Greater than 90 days and accruing	116,000,000	[1]	110,000,000	[1]	'
Acquired loans [Member] | Total commercial [Member]	'		'		'
Aging analysis of loans	'		'		'
30-59 days past due	4,000,000		10,000,000		'
60-89 days past due	2,000,000		8,000,000		'
Greater than 90 days past due	51,000,000		45,000,000		'
Total past due	57,000,000		63,000,000		'
Current	1,652,000,000		1,774,000,000		'
Total	1,709,000,000		1,838,000,000		'
Greater than 90 days and accruing	46,000,000	[1]	41,000,000	[1]	'
Acquired loans [Member] | Total commercial [Member] | Commercial real estate [Member]	'		'		'
Aging analysis of loans	'		'		'
30-59 days past due	3,000,000		8,000,000		'
60-89 days past due	1,000,000		8,000,000		'
Greater than 90 days past due	42,000,000		37,000,000		'
Total past due	46,000,000		52,000,000		'
Current	1,246,000,000		1,371,000,000		'
Total	1,292,000,000		1,423,000,000		1,964,000,000
Greater than 90 days and accruing	42,000,000	[1]	36,000,000	[1]	'
Acquired loans [Member] | Total commercial [Member] | Business [Member]	'		'		'
Aging analysis of loans	'		'		'
30-59 days past due	1,000,000		2,000,000		'
60-89 days past due	1,000,000		1,000,000		'
Greater than 90 days past due	9,000,000		8,000,000		'
Total past due	11,000,000		11,000,000		'
Current	406,000,000		403,000,000		'
Total	417,000,000		414,000,000		637,000,000
Greater than 90 days and accruing	5,000,000	[1]	5,000,000	[1]	'
Acquired loans [Member] | Total consumer [Member]	'		'		'
Aging analysis of loans	'		'		'
30-59 days past due	23,000,000		26,000,000		'
60-89 days past due	12,000,000		15,000,000		'
Greater than 90 days past due	87,000,000		84,000,000		'
Total past due	122,000,000		125,000,000		'
Current	2,531,000,000		2,555,000,000		'
Total	2,653,000,000		2,680,000,000		'
Greater than 90 days and accruing	70,000,000	[1]	70,000,000	[1]	'
Acquired loans [Member] | Total consumer [Member] | Residential real estate [Member]	'		'		'
Aging analysis of loans	'		'		'
30-59 days past due	14,000,000		19,000,000		'
60-89 days past due	9,000,000		11,000,000		'
Greater than 90 days past due	64,000,000		64,000,000		'
Total past due	88,000,000		94,000,000		'
Current	1,403,000,000		1,452,000,000		'
Total	1,491,000,000		1,546,000,000		1,906,000,000
Greater than 90 days and accruing	64,000,000	[1]	64,000,000	[1]	'
Acquired loans [Member] | Total consumer [Member] | Home equity [Member]	'		'		'
Aging analysis of loans	'		'		'
30-59 days past due	9,000,000		7,000,000		'
60-89 days past due	3,000,000		4,000,000		'
Greater than 90 days past due	22,000,000		20,000,000		'
Total past due	34,000,000		31,000,000		'
Current	1,128,000,000		1,103,000,000		'
Total	1,162,000,000		1,134,000,000		1,308,000,000
Greater than 90 days and accruing	6,000,000	[1]	5,000,000	[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	'		'		'
Total	0		0		34,000,000
Acquired loans [Member] | Total consumer [Member] | Other consumer [Member]	'		'		'
Aging analysis of loans	'		'		'
Total	$0		$0		$85,000,000
[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 $)	Mar. 31, 2014		Dec. 31, 2013		Mar. 31, 2013
In Millions, unless otherwise specified
Information about the credit quality of our commercial loan portfolio	'		'		'
Loans receivable	$21,751		$21,440		'
Total commercial [Member]	'		'		'
Information about the credit quality of our commercial loan portfolio	'		'		'
Loans receivable	13,338		13,068		'
Total commercial [Member] | Business [Member]	'		'		'
Information about the credit quality of our commercial loan portfolio	'		'		'
Loans receivable	5,470		5,290		'
Originated loans [Member]	'		'		'
Information about the credit quality of our commercial loan portfolio	'		'		'
Loans receivable	17,389		16,922		14,100
Originated loans [Member] | Total commercial [Member]	'		'		'
Information about the credit quality of our commercial loan portfolio	'		'		'
Loans receivable	11,629		11,231		'
Percent of total	100.00%		100.00%		'
Originated loans [Member] | Total commercial [Member] | Pass [Member]	'		'		'
Information about the credit quality of our commercial loan portfolio	'		'		'
Loans receivable	10,931		10,618		'
Percent of total	94.00%		94.60%		'
Originated loans [Member] | Total commercial [Member] | Criticized [Member]	'		'		'
Information about the credit quality of our commercial loan portfolio	'		'		'
Loans receivable	698	[1]	612	[1]	'
Percent of total	6.00%	[1]	5.40%	[1]	'
Originated loans [Member] | Total commercial [Member] | Criticized [Member] | Accrual [Member]	'		'		'
Information about the credit quality of our commercial loan portfolio	'		'		'
Loans receivable	621	[1]	517	[1]	'
Percent of total	5.30%	[1]	4.60%	[1]	'
Originated loans [Member] | Total commercial [Member] | Criticized [Member] | Nonaccrual [Member]	'		'		'
Information about the credit quality of our commercial loan portfolio	'		'		'
Loans receivable	77	[1]	95	[1]	'
Percent of total	0.70%	[1]	0.80%	[1]	'
Originated loans [Member] | Total commercial [Member] | Business [Member]	'		'		'
Information about the credit quality of our commercial loan portfolio	'		'		'
Loans receivable	5,053		4,876		4,407
Originated loans [Member] | Total commercial [Member] | Business [Member] | Pass [Member]	'		'		'
Information about the credit quality of our commercial loan portfolio	'		'		'
Loans receivable	4,695		4,590		'
Originated loans [Member] | Total commercial [Member] | Business [Member] | Criticized [Member]	'		'		'
Information about the credit quality of our commercial loan portfolio	'		'		'
Loans receivable	359	[1]	286	[1]	'
Originated loans [Member] | Total commercial [Member] | Business [Member] | Criticized [Member] | Accrual [Member]	'		'		'
Information about the credit quality of our commercial loan portfolio	'		'		'
Loans receivable	323	[1]	244	[1]	'
Originated loans [Member] | Total commercial [Member] | Business [Member] | Criticized [Member] | Nonaccrual [Member]	'		'		'
Information about the credit quality of our commercial loan portfolio	'		'		'
Loans receivable	35	[1]	42	[1]	'
Originated loans [Member] | Total commercial [Member] | Commercial real estate [Member]	'		'		'
Information about the credit quality of our commercial loan portfolio	'		'		'
Loans receivable	6,575		6,354		5,331
Originated loans [Member] | Total commercial [Member] | Commercial real estate [Member] | Pass [Member]	'		'		'
Information about the credit quality of our commercial loan portfolio	'		'		'
Loans receivable	6,237		6,028		'
Originated loans [Member] | Total commercial [Member] | Commercial real estate [Member] | Criticized [Member]	'		'		'
Information about the credit quality of our commercial loan portfolio	'		'		'
Loans receivable	339	[1]	327	[1]	'
Originated loans [Member] | Total commercial [Member] | Commercial real estate [Member] | Criticized [Member] | Accrual [Member]	'		'		'
Information about the credit quality of our commercial loan portfolio	'		'		'
Loans receivable	298	[1]	273	[1]	'
Originated loans [Member] | Total commercial [Member] | Commercial real estate [Member] | Criticized [Member] | Nonaccrual [Member]	'		'		'
Information about the credit quality of our commercial loan portfolio	'		'		'
Loans receivable	41	[1]	53	[1]	'
Acquired loans [Member]	'		'		'
Information about the credit quality of our commercial loan portfolio	'		'		'
Loans receivable	4,362		4,517		5,935
Acquired loans [Member] | Total commercial [Member]	'		'		'
Information about the credit quality of our commercial loan portfolio	'		'		'
Loans receivable	1,709		1,838		'
Percent of total	100.00%		100.00%		'
Acquired loans [Member] | Total commercial [Member] | Pass [Member]	'		'		'
Information about the credit quality of our commercial loan portfolio	'		'		'
Loans receivable	1,491		1,619		'
Percent of total	87.30%		88.20%		'
Acquired loans [Member] | Total commercial [Member] | Criticized [Member]	'		'		'
Information about the credit quality of our commercial loan portfolio	'		'		'
Loans receivable	218	[1]	218	[1]	'
Percent of total	12.70%	[1]	11.80%	[1]	'
Acquired loans [Member] | Total commercial [Member] | Criticized [Member] | Accrual [Member]	'		'		'
Information about the credit quality of our commercial loan portfolio	'		'		'
Loans receivable	209	[1]	208	[1]	'
Percent of total	12.20%	[1]	11.30%	[1]	'
Acquired loans [Member] | Total commercial [Member] | Criticized [Member] | Nonaccrual [Member]	'		'		'
Information about the credit quality of our commercial loan portfolio	'		'		'
Loans receivable	9	[1]	10	[1]	'
Percent of total	0.50%	[1]	0.50%	[1]	'
Acquired loans [Member] | Total commercial [Member] | Business [Member]	'		'		'
Information about the credit quality of our commercial loan portfolio	'		'		'
Loans receivable	417		414		637
Acquired loans [Member] | Total commercial [Member] | Business [Member] | Pass [Member]	'		'		'
Information about the credit quality of our commercial loan portfolio	'		'		'
Loans receivable	360		359		'
Acquired loans [Member] | Total commercial [Member] | Business [Member] | Criticized [Member]	'		'		'
Information about the credit quality of our commercial loan portfolio	'		'		'
Loans receivable	57	[1]	55	[1]	'
Acquired loans [Member] | Total commercial [Member] | Business [Member] | Criticized [Member] | Accrual [Member]	'		'		'
Information about the credit quality of our commercial loan portfolio	'		'		'
Loans receivable	48	[1]	46	[1]	'
Acquired loans [Member] | Total commercial [Member] | Business [Member] | Criticized [Member] | Nonaccrual [Member]	'		'		'
Information about the credit quality of our commercial loan portfolio	'		'		'
Loans receivable	9	[1]	9	[1]	'
Acquired loans [Member] | Total commercial [Member] | Commercial real estate [Member]	'		'		'
Information about the credit quality of our commercial loan portfolio	'		'		'
Loans receivable	1,292		1,423		1,964
Acquired loans [Member] | Total commercial [Member] | Commercial real estate [Member] | Pass [Member]	'		'		'
Information about the credit quality of our commercial loan portfolio	'		'		'
Loans receivable	1,131		1,260		'
Acquired loans [Member] | Total commercial [Member] | Commercial real estate [Member] | Criticized [Member]	'		'		'
Information about the credit quality of our commercial loan portfolio	'		'		'
Loans receivable	162	[1]	163	[1]	'
Acquired loans [Member] | Total commercial [Member] | Commercial real estate [Member] | Criticized [Member] | Accrual [Member]	'		'		'
Information about the credit quality of our commercial loan portfolio	'		'		'
Loans receivable	162	[1]	162	[1]	'
Acquired loans [Member] | Total commercial [Member] | Commercial real estate [Member] | Criticized [Member] | Nonaccrual [Member]	'		'		'
Information about the credit quality of our commercial loan portfolio	'		'		'
Loans receivable	$0	[1]	$1	[1]	'
[1]	Includes special mention, substandard, doubtful, and loss, which are consistent with regulatory definitions, and as described in Item 1, “Business,” under “Asset Quality Review” in our Annual Report on 10-K for the year ended December 31, 2013.

Loans_and_Leases_Consumer_Cred

Loans and Leases - Consumer Credit Quality Indicators - FICO Score(Details) (USD $)	Mar. 31, 2014		Dec. 31, 2013		Mar. 31, 2013
In Millions, unless otherwise specified
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	$21,751		$21,440		'
Originated loans [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	17,389		16,922		14,100
Acquired loans [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	4,362		4,517		5,935
Total consumer [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	8,413		8,371		'
Total consumer [Member] | Residential real estate [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	3,389		3,448		'
Total consumer [Member] | Home equity [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	2,767		2,752		'
Total consumer [Member] | Indirect auto [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	1,655		1,544		'
Total consumer [Member] | Originated loans [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	5,760		5,691		'
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	4,388		4,324		'
Percent of total	76.20%		76.00%		'
Total consumer [Member] | Originated loans [Member] | 660 - 700 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	710		696		'
Percent of total	12.30%		12.20%		'
Total consumer [Member] | Originated loans [Member] | 620 - 660 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	335		328		'
Percent of total	5.80%		5.80%		'
Total consumer [Member] | Originated loans [Member] | 580 - 620 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	148		142		'
Percent of total	2.60%		2.50%		'
Total consumer [Member] | Originated loans [Member] | Less Than 580 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	143		135		'
Percent of total	2.50%		2.40%		'
Total consumer [Member] | Originated loans [Member] | No Score [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	35	[1]	66	[1]	'
Percent of total	0.50%	[1]	1.10%	[1]	'
Total consumer [Member] | Originated loans [Member] | Residential real estate [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	1,898		1,902		1,709
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	1,628		1,609		'
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	130		128		'
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	63		56		'
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	31		32		'
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	37		38		'
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	10	[1]	39	[1]	'
Total consumer [Member] | Originated loans [Member] | Home equity [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	1,605		1,618		1,338
Total consumer [Member] | Originated loans [Member] | Home equity [Member] | Over 700 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	1,315		1,327		'
Total consumer [Member] | Originated loans [Member] | Home equity [Member] | 660 - 700 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	159		158		'
Total consumer [Member] | Originated loans [Member] | Home equity [Member] | 620 - 660 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	65		69		'
Total consumer [Member] | Originated loans [Member] | Home equity [Member] | 580 - 620 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	32		30		'
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		30		'
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]	3	[1]	'
Total consumer [Member] | Originated loans [Member] | Indirect auto [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	1,655		1,544		818
Total consumer [Member] | Originated loans [Member] | Indirect auto [Member] | Over 700 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	1,069		993		'
Total consumer [Member] | Originated loans [Member] | Indirect auto [Member] | 660 - 700 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	317		304		'
Total consumer [Member] | Originated loans [Member] | Indirect auto [Member] | 620 - 660 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	157		149		'
Total consumer [Member] | Originated loans [Member] | Indirect auto [Member] | 580 - 620 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	60		55		'
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	53		43		'
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]	0	[1]	'
Total consumer [Member] | Originated loans [Member] | Credit cards [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	306		325		264
Total consumer [Member] | Originated loans [Member] | Credit cards [Member] | Over 700 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	206		223		'
Total consumer [Member] | Originated loans [Member] | Credit cards [Member] | 660 - 700 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	52		53		'
Total consumer [Member] | Originated loans [Member] | Credit cards [Member] | 620 - 660 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	24		25		'
Total consumer [Member] | Originated loans [Member] | Credit cards [Member] | 580 - 620 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	11		12		'
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		8		'
Total consumer [Member] | Originated loans [Member] | Credit cards [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] | Other consumer [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	296		302		232
Total consumer [Member] | Originated loans [Member] | Other consumer [Member] | Over 700 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	170		173		'
Total consumer [Member] | Originated loans [Member] | Other consumer [Member] | 660 - 700 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	51		53		'
Total consumer [Member] | Originated loans [Member] | Other consumer [Member] | 620 - 660 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	27		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	13		14		'
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		15		'
Total consumer [Member] | Originated loans [Member] | Other consumer [Member] | No Score [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	19	[1]	20	[1]	'
Total consumer [Member] | Acquired loans [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	2,653		2,680		'
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	1,939		1,948		'
Percent of total	73.10%		72.70%		'
Total consumer [Member] | Acquired loans [Member] | 660 - 700 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	207		218		'
Percent of total	7.80%		8.10%		'
Total consumer [Member] | Acquired loans [Member] | 620 - 660 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	123		119		'
Percent of total	4.60%		4.40%		'
Total consumer [Member] | Acquired loans [Member] | 580 - 620 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	94		95		'
Percent of total	3.50%		3.60%		'
Total consumer [Member] | Acquired loans [Member] | Less Than 580 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	114		114		'
Percent of total	4.30%		4.30%		'
Total consumer [Member] | Acquired loans [Member] | No Score [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	175	[1]	185	[1]	'
Percent of total	6.60%	[1]	6.90%	[1]	'
Total consumer [Member] | Acquired loans [Member] | Residential real estate [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	1,491		1,546		1,906
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	1,035		1,074		'
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	108		115		'
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	65		61		'
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	54		57		'
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	73		75		'
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	156	[1]	164	[1]	'
Total consumer [Member] | Acquired loans [Member] | Home equity [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	1,162		1,134		1,308
Total consumer [Member] | Acquired loans [Member] | Home equity [Member] | Over 700 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	904		874		'
Total consumer [Member] | Acquired loans [Member] | Home equity [Member] | 660 - 700 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	100		103		'
Total consumer [Member] | Acquired loans [Member] | Home equity [Member] | 620 - 660 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	58		57		'
Total consumer [Member] | Acquired loans [Member] | Home equity [Member] | 580 - 620 [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	40		39		'
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	41		40		'
Total consumer [Member] | Acquired loans [Member] | Home equity [Member] | No Score [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	19	[1]	21	[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		0		34
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		0		'
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		0		'
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		0		'
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		0		'
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		0		'
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]	0	[1]	'
Total consumer [Member] | Acquired loans [Member] | Other consumer [Member]	'		'		'
Information about the credit quality of our consumer loan portfolio	'		'		'
Loans receivable	0		0		85
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		0		'
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		0		'
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		0		'
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		0		'
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		0		'
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]	$0	[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 $)	Mar. 31, 2014		Dec. 31, 2013
In Millions, unless otherwise specified
Aggregate recorded investment of impaired loans with terms through troubled debt restructuring	'		'
Accruing interest	$56		$52
Nonaccrual	46		56
Total troubled debt restructurings	$102	[1]	$108	[1]
[1]	Includes 74 and 40 acquired loans that were restructured with a recorded investment of $4 million and $1 million at March 31, 2014 and December 31, 2013

Loans_and_Leases_Troubled_Debt

Loans and Leases - Troubled Debt Restructuring by Concession Type (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014		Mar. 31, 2013
	Contract		Contract
Financing effects of our modifications	'		'
Count	139		46
Postmodification recorded investment	$7	[1]	$20	[1]
Premodification allowance for loan losses	0		2
Postmodification allowance for loan losses	0		1
Total commercial [Member]	'		'
Financing effects of our modifications	'		'
Count	3		9
Postmodification recorded investment	3	[1]	18	[1]
Premodification allowance for loan losses	0		2
Postmodification allowance for loan losses	0		1
Total commercial [Member] | Commercial real estate [Member] | Extension of term and rate reduction [Member]	'		'
Financing effects of our modifications	'		'
Count	1		1
Postmodification recorded investment	0	[1]	4	[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 [Member]	'		'
Financing effects of our modifications	'		'
Count	'		4
Postmodification recorded investment	'		6	[1]
Premodification allowance for loan losses	'		0
Postmodification allowance for loan losses	'		1
Total commercial [Member] | Business [Member] | Extension of term [Member]	'		'
Financing effects of our modifications	'		'
Count	2		4
Postmodification recorded investment	3	[1]	7	[1]
Premodification allowance for loan losses	0		1
Postmodification allowance for loan losses	0		0
Total consumer [Member]	'		'
Financing effects of our modifications	'		'
Count	136		37
Postmodification recorded investment	4	[1]	2	[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	4		2
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] | Extension of term [Member]	'		'
Financing effects of our modifications	'		'
Count	2		1
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	1		'
Postmodification recorded investment	0	[1]	'
Premodification allowance for loan losses	0		'
Postmodification allowance for loan losses	0		'
Total consumer [Member] | Residential real estate [Member] | Chapter 7 bankruptcy [Member]	'		'
Financing effects of our modifications	'		'
Count	8		2
Postmodification recorded investment	1	[1]	0	[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	'		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	2		'
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	33		7
Postmodification recorded investment	1	[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	'		1
Postmodification recorded investment	'		0
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	86		8
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	'		14
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_Information_a

Loans and Leases - Information about Residential Mortgage Banking (Details) (USD $)	Mar. 31, 2014	Mar. 31, 2013
In Millions, unless otherwise specified
Information about residential mortgage loans	'	'
Mortgages serviced for others	$3,713	$3,157
Mortgage servicing asset recorded for loans serviced for others, net	$36	$28

Loans_and_Leases_Details_Textu

Loans and Leases (Details Textual) (USD $)	3 Months Ended			12 Months Ended
	Mar. 31, 2014		Mar. 31, 2013	Dec. 31, 2013
	acquisition			Contract
	Segment
	Contract
	payment
Accounts, Notes, Loans and Financing Receivable [Line Items]	'		'	'
Number of segments in portfolio	2		'	'
Liability for Unfunded Commitments	$14,000,000		'	$13,000,000
Provision for Credit Losses for Unfunded Commitments	400,000		400,000	'
Home equity portfolio	2,800,000,000		'	2,800,000,000
Portion of Home Equity Portfolio in First Lien Position	1,000,000,000		'	1,000,000,000
Percentage of second lien home equity where first lien held and serviced	10.00%		'	10.00%
Number of acquisitions since January 1, 2009	4		'	'
Other changes in nonaccretable yield	55,000,000	[1]	'	22,000,000	[1]
Carrying value of impaired loans, less related allowance, as percent of principal	71.00%		'	69.00%
Minimum number of payments of restructured loan	6		'	'
Nonaccrual loans not modified in TDR minimum	'less than $200 thousand		'	'
Troubled debt restructures acquired loan portfolio count	74		'	40
Troubled debt restructures acquired loan portfolio	$4,000,000		'	$1,000,000
[1]	Includes changes in expected cash flows from changes in interest rate and prepayment assumptions.

Derivative_Financial_Instrumen2

Derivative Financial Instruments - Notional Amount and Fair Value of Derivative Instruments (Details) (USD $)	Mar. 31, 2014		Dec. 31, 2013
In Millions, unless otherwise specified
Derivative financial instruments	'		'
Asset Derivatives, Notional Amount	$3,183		$3,114
Asset Derivatives, Fair Value	70	[1]	76	[1]
Liability Derivatives, Notional Amount	3,228		3,107
Liability Derivatives, Fair Value	72	[2]	77	[2]
Interest Rate Swap [Member] | Designated as Hedging Instrument [Member]	'		'
Derivative financial instruments	'		'
Asset Derivatives, Notional Amount	11		22
Asset Derivatives, Fair Value	0	[1]	0	[1]
Liability Derivatives, Notional Amount	24		13
Liability Derivatives, Fair Value	1	[2]	1	[2]
Interest Rate Swap [Member] | Not Designated as Hedging Instrument [Member]	'		'
Derivative financial instruments	'		'
Asset Derivatives, Notional Amount	3,172		3,092
Asset Derivatives, Fair Value	70	[1]	76	[1]
Liability Derivatives, Notional Amount	3,204		3,094
Liability Derivatives, Fair Value	$71	[2]	$76	[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 (Details Textual) (USD $)	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified					Customer swap [Member]	Customer swap [Member]
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'	'	'	'
Net liability positions with counterparties	$47	$49	'	'	'	'
Gross amounts of recognized liabilities to be offset with asset	70	76	'	'	'	'
Gross amount of asset offsetting liabilities in the Statement of Condition	23	27	'	'	'	'
Collateral posted for net liability positions	58	43	'	'	'	'
Loss in accumulated other comprehensive income borrowings previously hedged	5	6	6	6	'	'
Derivative revenue	'	'	'	'	$2	$5

Earnings_Per_Share_Details

Earnings Per Share (Details) (USD $)	3 Months Ended
In Millions, except Per Share data, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Computation of basic and diluted earnings per share using two-class method	'	'
Net income available to common stockholders	$52	$60
Less income allocable to unvested restricted stock awards	0	0
Net income allocable to common stockholders	$52	$60
Weighted average common shares outstanding:	'	'
Total shares issued	366	366
Unallocated employee stock ownership plan shares	-2	-2
Unvested restricted stock awards	-2	-1
Treasury shares	-12	-13
Total basic weighted average common shares outstanding	350	349
Effect of dilutive stock-based awards	2	1
Total diluted weighted average common shares outstanding	351	350
Basic earnings per common share	$0.15	$0.17
Diluted earnings per common share	$0.15	$0.17
Anti-dilutive stock-based awards excluded from the diluted weighted average common share calculations	11	11

Other_Comprehensive_Income_Com

Other Comprehensive Income - Comprehensive Income (Loss) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014		Mar. 31, 2013
Securities available for sale:	'		'
Net unrealized holding (losses) gains arising during the period, pretax	$14		($19)
Reclassification adjustment for net unrealized holding gains on securities transferred between available for sale and held to maturity, pretax	'		-55
Net unrealized (losses) gains on securities available for sale, pretax	'		-74
Net unrealized holding (losses) gains arising during the period, tax	5		-7
Reclassification adjustment for net unrealized holding gains on securities transferred between available for sale and held to maturity, tax	'		-21
Net unrealized (losses) gains on securities available for sale, tax	'		-28
Net unrealized holding (losses) gains arising during the period, net of tax	9		-12
Reclassification adjustment for net unrealized holding gains on securities transferred between available for sale and held to maturity, net of tax	0		-34
Net unrealized (losses) gains on securities available for sale, net of tax	9		-46
Net unrealized holding gains on securities transferred between available for sale and held to maturity:	'		'
Net unrealized holding gains transferred during the period, pretax	'		55
Amortization of net unrealized holding gains to income during the period, pre-tax	-3	[1]	-1	[1]
Net unrealized holding (losses) gains on securities transferred during the period, pre-tax	'		54
Net unrealized holding gains transferred during the period, tax	'		21
Amortization of net unrealized holding gains to income during the period, tax	-1	[1]	0	[1]
Net unrealized holding (losses) gains on securities transferred during the period, tax	'		21
Net unrealized holding gains transferred during the period, net of tax	0		34
Amortization of net unrealized holding gains to income during the period, net of tax	-2	[1]	-1	[1]
Net unrealized holding (losses) gains on securities transferred during the period	-2		33
Total other comprehensive (loss) income, pretax	11		-19
Total other comprehensive (loss) income, tax	4		-7
Total other comprehensive income (loss)	$7		($12)
[1]	Included in Interest income on investment securities and other in our Consolidated Statement of Income.

Other_Comprehensive_Income_Cha

Other Comprehensive Income - Change in Accumulated Other Comprehensive Income (Loss) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Accumulated other comprehensive income	'	'
Net unrealized gains on securities available for sale, beginning balance	$64	$207
Net unrealized (losses) gains on securities transferred from available for sale and held to maturity, beginning balance	20	-2
Unrealized (losses) gains on interest rate swaps designated as cash flow hedges, beginning balance	-6	-6
Pension and postretirement plans, beginning balance	-16	-41
Accumulated other comprehensive income (loss), net	62	157
Net unrealized gains on securities available for sale, period change, net of tax	9	-46
Net unrealized (losses) gains on securities transferred from available for sale and held to maturity, period change, net of tax	-2	33
Unrealized (losses) gains on interest rate swaps designated as cash flow hedges, period change, net of tax	0	0
Pension and post-retirement plans, period change, net of tax	0	0
Accumulated other comprehensive (loss) income, period change, net of tax	7	-12
Net unrealized gains on securities available for sale, ending balance	73	161
Net unrealized (losses) gains on securities transferred from available for sale and held to maturity, ending balance	18	32
Unrealized (losses) gains on interest rate swaps designated as cash flow hedges, ending balance	-5	-6
Pension and postretirement plans, ending balance	-16	-41
Accumulated other comprehensive income, total, ending balance	69	145
Pre-tax net loss on cash flow hedges from accumulated other comprehensive income to earnings	$1	'

Fair_Value_Measurements_Fair_V

Fair Value Measurements - Fair Value, Option, Loans Held for Sale (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Loans held for sale	'	'
Fair value carrying amount	$34	$50
Aggregate unpaid principal balance	1	1
Fair value carrying amount less aggregate unpaid principal balance	$34	$49

Fair_Value_Measurements_Fair_V1

Fair Value Measurements - Fair Value, Assets and Liabilities Measured on Recurring Basis (Details) (USD $)	Mar. 31, 2014		Dec. 31, 2013
In Millions, unless otherwise specified
Assets:	'		'
Investment securities available for sale	$7,060		$7,423
Loans held for sale	34		50
Debt securities [Member]	'		'
Assets:	'		'
Investment securities available for sale	1,670		1,734
Residential mortgage-backed securities [Member]	'		'
Assets:	'		'
Investment securities available for sale	1,446		1,490
Collateralized mortgage obligations [Member]	'		'
Assets:	'		'
Investment securities available for sale	1,127		1,152
Commercial mortgage-backed securities, non-agency issued [Member]	'		'
Assets:	'		'
Investment securities available for sale	1,709		1,831
Mortgage Backed Securities [Member]	'		'
Assets:	'		'
Investment securities available for sale	3,154		3,321
Collateralized loan obligations, non-agency issued [Member]	'		'
Assets:	'		'
Investment securities available for sale	1,366		1,431
States and political subdivisions [Member] | Debt securities [Member]	'		'
Assets:	'		'
Investment securities available for sale	519		529
U.S. Treasury [Member] | Debt securities [Member]	'		'
Assets:	'		'
Investment securities available for sale	20		20
U.S. government sponsored enterprises [Member] | Debt securities [Member]	'		'
Assets:	'		'
Investment securities available for sale	266		312
Corporate [Member] | Debt securities [Member]	'		'
Assets:	'		'
Investment securities available for sale	864		872
Government National Mortgage Association [Member] | Residential mortgage-backed securities [Member]	'		'
Assets:	'		'
Investment securities available for sale	38		40
Federal National Mortgage Association [Member] | Residential mortgage-backed securities [Member]	'		'
Assets:	'		'
Investment securities available for sale	131		139
Federal National Mortgage Association [Member] | Collateralized mortgage obligations [Member]	'		'
Assets:	'		'
Investment securities available for sale	742		761
Federal Home Loan Mortgage Corporation [Member] | Residential mortgage-backed securities [Member]	'		'
Assets:	'		'
Investment securities available for sale	149		159
Federal Home Loan Mortgage Corporation [Member] | Collateralized mortgage obligations [Member]	'		'
Assets:	'		'
Investment securities available for sale	374		379
Non-agency issued [Member] | Collateralized mortgage obligations [Member]	'		'
Assets:	'		'
Investment securities available for sale	11		13
Fair Value, Measurements, Recurring [Member]	'		'
Assets:	'		'
Investment securities available for sale	7,060		7,423
Loans held for sale	34		50
Derivatives	47		49
Total assets	7,142		7,522
Liabilities:	'		'
Derivatives	48		50
Fair Value, Measurements, Recurring [Member] | Debt securities [Member]	'		'
Assets:	'		'
Investment securities available for sale	1,670		1,734
Fair Value, Measurements, Recurring [Member] | Residential mortgage-backed securities [Member]	'		'
Assets:	'		'
Investment securities available for sale	1,446		1,490
Fair Value, Measurements, Recurring [Member] | Collateralized mortgage obligations [Member]	'		'
Assets:	'		'
Investment securities available for sale	1,127		1,152
Fair Value, Measurements, Recurring [Member] | Mortgage Backed Securities [Member]	'		'
Assets:	'		'
Investment securities available for sale	3,154		3,321
Fair Value, Measurements, Recurring [Member] | Collateralized loan obligations, non-agency issued [Member]	'		'
Assets:	'		'
Investment securities available for sale	1,366		1,431
Fair Value, Measurements, Recurring [Member] | States and political subdivisions [Member] | Debt securities [Member]	'		'
Assets:	'		'
Investment securities available for sale	519		529
Fair Value, Measurements, Recurring [Member] | U.S. Treasury [Member] | Debt securities [Member]	'		'
Assets:	'		'
Investment securities available for sale	20		20
Fair Value, Measurements, Recurring [Member] | U.S. government sponsored enterprises [Member] | Debt securities [Member]	'		'
Assets:	'		'
Investment securities available for sale	266		312
Fair Value, Measurements, Recurring [Member] | Corporate [Member] | Debt securities [Member]	'		'
Assets:	'		'
Investment securities available for sale	864		872
Fair Value, Measurements, Recurring [Member] | Government National Mortgage Association [Member] | Residential mortgage-backed securities [Member]	'		'
Assets:	'		'
Investment securities available for sale	38		40
Fair Value, Measurements, Recurring [Member] | Federal National Mortgage Association [Member] | Residential mortgage-backed securities [Member]	'		'
Assets:	'		'
Investment securities available for sale	131		139
Fair Value, Measurements, Recurring [Member] | Federal National Mortgage Association [Member] | Collateralized mortgage obligations [Member]	'		'
Assets:	'		'
Investment securities available for sale	742		761
Fair Value, Measurements, Recurring [Member] | Federal Home Loan Mortgage Corporation [Member] | Residential mortgage-backed securities [Member]	'		'
Assets:	'		'
Investment securities available for sale	149		159
Fair Value, Measurements, Recurring [Member] | Federal Home Loan Mortgage Corporation [Member] | Collateralized mortgage obligations [Member]	'		'
Assets:	'		'
Investment securities available for sale	374		379
Fair Value, Measurements, Recurring [Member] | Collateralized mortgage obliations, non-agency issued [Member] | Collateralized mortgage obligations [Member]	'		'
Assets:	'		'
Investment securities available for sale	11		13
Fair Value, Measurements, Recurring [Member] | Non-agency issued [Member] | Commercial mortgage-backed securities, non-agency issued [Member]	'		'
Assets:	'		'
Investment securities available for sale	1,709		1,831
Fair Value, Measurements, Recurring [Member] | Asset-backed securities [Member]	'		'
Assets:	'		'
Investment securities available for sale	846		905
Fair Value, Measurements, Recurring [Member] | Asset-backed securities [Member] | Student Loans [Member]	'		'
Assets:	'		'
Investment securities available for sale	310		312
Fair Value, Measurements, Recurring [Member] | Asset-backed securities [Member] | Credit cards [Member]	'		'
Assets:	'		'
Investment securities available for sale	72		73
Fair Value, Measurements, Recurring [Member] | Asset-backed securities [Member] | Auto Loans [Member]	'		'
Assets:	'		'
Investment securities available for sale	325		335
Fair Value, Measurements, Recurring [Member] | Asset-backed securities [Member] | Other Loans [Member]	'		'
Assets:	'		'
Investment securities available for sale	138		186
Fair Value, Measurements, Recurring [Member] | Other securities [Member]	'		'
Assets:	'		'
Investment securities available for sale	23		33
Fair Value, Measurements, Recurring [Member] | Level 1 [Member]	'		'
Assets:	'		'
Investment securities available for sale	43		43
Total assets	43		43
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | Debt securities [Member]	'		'
Assets:	'		'
Investment securities available for sale	20		20
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | U.S. Treasury [Member] | Debt securities [Member]	'		'
Assets:	'		'
Investment securities available for sale	20		20
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | Other securities [Member]	'		'
Assets:	'		'
Investment securities available for sale	22		22
Fair Value, Measurements, Recurring [Member] | Level 2 [Member]	'		'
Assets:	'		'
Investment securities available for sale	7,013		7,376
Loans held for sale	34	[1]	50	[1]
Derivatives	47		49
Total assets	7,095		7,476
Liabilities:	'		'
Derivatives	48		50
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Debt securities [Member]	'		'
Assets:	'		'
Investment securities available for sale	1,646		1,709
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Residential mortgage-backed securities [Member]	'		'
Assets:	'		'
Investment securities available for sale	1,446		1,490
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Collateralized mortgage obligations [Member]	'		'
Assets:	'		'
Investment securities available for sale	1,127		1,152
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Mortgage Backed Securities [Member]	'		'
Assets:	'		'
Investment securities available for sale	3,154		3,321
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Collateralized loan obligations, non-agency issued [Member]	'		'
Assets:	'		'
Investment securities available for sale	1,366		1,431
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | States and political subdivisions [Member] | Debt securities [Member]	'		'
Assets:	'		'
Investment securities available for sale	519		529
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | U.S. government sponsored enterprises [Member] | Debt securities [Member]	'		'
Assets:	'		'
Investment securities available for sale	266		312
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Corporate [Member] | Debt securities [Member]	'		'
Assets:	'		'
Investment securities available for sale	860		868
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Government National Mortgage Association [Member] | Residential mortgage-backed securities [Member]	'		'
Assets:	'		'
Investment securities available for sale	38		40
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Federal National Mortgage Association [Member] | Residential mortgage-backed securities [Member]	'		'
Assets:	'		'
Investment securities available for sale	131		139
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Federal National Mortgage Association [Member] | Collateralized mortgage obligations [Member]	'		'
Assets:	'		'
Investment securities available for sale	742		761
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	149		159
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Federal Home Loan Mortgage Corporation [Member] | Collateralized mortgage obligations [Member]	'		'
Assets:	'		'
Investment securities available for sale	374		379
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Collateralized mortgage obliations, non-agency issued [Member] | Collateralized mortgage obligations [Member]	'		'
Assets:	'		'
Investment securities available for sale	11		13
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	1,709		1,831
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Asset-backed securities [Member]	'		'
Assets:	'		'
Investment securities available for sale	846		905
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Asset-backed securities [Member] | Student Loans [Member]	'		'
Assets:	'		'
Investment securities available for sale	310		312
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Asset-backed securities [Member] | Credit cards [Member]	'		'
Assets:	'		'
Investment securities available for sale	72		73
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Asset-backed securities [Member] | Auto Loans [Member]	'		'
Assets:	'		'
Investment securities available for sale	325		335
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Asset-backed securities [Member] | Other Loans [Member]	'		'
Assets:	'		'
Investment securities available for sale	138		186
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Other securities [Member]	'		'
Assets:	'		'
Investment securities available for sale	1		10
Fair Value, Measurements, Recurring [Member] | Level 3 [Member]	'		'
Assets:	'		'
Investment securities available for sale	4		4
Total assets	4		4
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Debt securities [Member]	'		'
Assets:	'		'
Investment securities available for sale	4		4
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Corporate [Member] | Debt securities [Member]	'		'
Assets:	'		'
Investment securities available for sale	$4		$4
[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 $)	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013
In Millions, unless otherwise specified			Level 1 [Member]	Level 1 [Member]	Level 2 [Member]	Level 2 [Member]	Level 2 [Member]	Level 3 [Member]	Level 3 [Member]	Collateral Dependent Impaired Loans [Member]	Collateral Dependent Impaired Loans [Member]
Summary of assets and liabilities measured at fair value on a nonrecurring basis	'	'	'	'	'	'	'	'	'	'	'
Collateral dependent impaired loans	$26	$42	$0	$0	$20	$20	$29	$6	$13	'	'
Total gains (losses)	'	'	'	'	'	'	'	'	'	($2)	($5)

Fair_Value_Measurements_Change

Fair Value Measurements - Change in Level 3 Assets Measured on Recurring Basis (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Changes in Level 3 assets and liabilities measurerd at estimated fair value on a recurring basis [Roll Forward]	'	'
Balance at beginning of period	'	$1,559
Purchases	'	45
Gains included in other comprehensive income	'	14
Balance at end of period	'	1,618
Trust preferred securities [Member]	'	'
Changes in Level 3 assets and liabilities measurerd at estimated fair value on a recurring basis [Roll Forward]	'	'
Balance at beginning of period	4	14
Purchases	0	0
Gains included in other comprehensive income	0	1
Balance at end of period	4	15
Collateralized loan obligations [Member]	'	'
Changes in Level 3 assets and liabilities measurerd at estimated fair value on a recurring basis [Roll Forward]	'	'
Balance at beginning of period	'	1,545
Purchases	'	45
Gains included in other comprehensive income	'	14
Balance at end of period	'	$1,603

Fair_Value_Measurements_Fair_V3

Fair Value Measurements - Fair Value of Financial Instruments by Balance Sheet Grouping (Details) (USD $)	Mar. 31, 2014		Dec. 31, 2013		Mar. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Financial assets:	'		'		'	'
Cash and cash equivalents	$503		$463		$424	$431
Investment securities available for sale	7,060		7,423		'	'
Investment securities held to maturity	4,427		3,988		'	'
Federal Home Loan Bank and Federal Reserve Bank common stock	438		469		'	'
Loans held for sale	34		50		'	'
Carrying (Reported) Amount, Fair Value Disclosure [Member] | Level 1 [Member]	'		'		'	'
Financial assets:	'		'		'	'
Cash and cash equivalents	503		463		'	'
Carrying (Reported) Amount, Fair Value Disclosure [Member] | Fair value inputs level 1, 2, 3 [Member]	'		'		'	'
Financial assets:	'		'		'	'
Investment securities available for sale	7,060	[1]	7,423	[1]	'	'
Carrying (Reported) Amount, Fair Value Disclosure [Member] | Level 2 [Member]	'		'		'	'
Financial assets:	'		'		'	'
Investment securities held to maturity	4,467		4,042		'	'
Federal Home Loan Bank and Federal Reserve Bank common stock	438		469		'	'
Loans held for sale	34		50		'	'
Derivatives	47		49		'	'
Accrued interest receivable	106		103		'	'
Financial liabilities:	'		'		'	'
Deposits	27,598		26,665		'	'
Borrowings	4,871		5,556		'	'
Derivatives	48		50		'	'
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	21,536	[2]	21,230	[2]	'	'
Estimate of Fair Value, Fair Value Disclosure [Member] | Level 1 [Member]	'		'		'	'
Financial assets:	'		'		'	'
Cash and cash equivalents	503		463		'	'
Estimate of Fair Value, Fair Value Disclosure [Member] | Fair value inputs level 1, 2, 3 [Member]	'		'		'	'
Financial assets:	'		'		'	'
Investment securities available for sale	7,060	[1]	7,423	[1]	'	'
Estimate of Fair Value, Fair Value Disclosure [Member] | Level 2 [Member]	'		'		'	'
Financial assets:	'		'		'	'
Investment securities held to maturity	4,427		3,988		'	'
Federal Home Loan Bank and Federal Reserve Bank common stock	438		469		'	'
Loans held for sale	34		50		'	'
Derivatives	47		49		'	'
Accrued interest receivable	106		103		'	'
Financial liabilities:	'		'		'	'
Deposits	27,621		26,695		'	'
Borrowings	4,905		5,599		'	'
Derivatives	48		50		'	'
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	$22,062	[2]	$21,774	[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 of collateral dependent impaired loans without significant adjustments made to appraised values at March 31, 2014 and December 31, 2013. All other loans and leases are classified as level 3.

Fair_Value_Measurements_Detail

Fair Value Measurements (Details Textual) (USD $)	3 Months Ended			3 Months Ended
	Mar. 31, 2014	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2013
		Fair Value, Measurements, Nonrecurring [Member]	Fair Value, Measurements, Nonrecurring [Member]	Fair Value, Measurements, Nonrecurring [Member]	Fair Value, Measurements, Nonrecurring [Member]	Fair Value, Inputs, Level 2 [Member]	Fair Value, Inputs, Level 2 [Member]	Fair Value, Inputs, Level 2 [Member]
				Collateral Dependent Impaired Loans [Member]	Collateral Dependent Impaired Loans [Member]	Fair Value, Measurements, Nonrecurring [Member]	Fair Value, Measurements, Nonrecurring [Member]	Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'	'	'	'	'	'
Investment securities price at broker quotes	$0	'	'	'	'	'	'	'
Loans held for sale, nonaccrual or 90 or more days past due	0	'	'	'	'	'	'	'
Maximum days for completion of appraisals or evaluations for assets	'90 days	'	'	'	'	'	'	'
Net increase in allowance for credit losses	'	'	'	2,000,000	5,000,000	'	'	'
Collateral dependent impaired loans fair value disclosure	'	$26,000,000	$42,000,000	'	'	$20,000,000	$20,000,000	$29,000,000
Original maturity period for cash and cash equivalents (3 months or less)	'3 months	'	'	'	'	'	'	'

Segment_Information_Details

Segment Information (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
	Segment
Segment Reporting Information [Line Items]	'	'
Number of Reportable Segments	2	'
Financial information of business segments	'	'
Net interest income	$271	$266
Provision for credit losses	25	20
Net interest income after provision for credit losses	246	246
Noninterest income	77	89
Amortization of intangibles	8	14
Other noninterest expense	241	224
Income before income taxes	74	98
Income tax expense (benefit)	14	30
Net income	59	67
Banking [Member]	'	'
Financial information of business segments	'	'
Net interest income	271	266
Provision for credit losses	25	20
Net interest income after provision for credit losses	246	246
Noninterest income	61	73
Amortization of intangibles	7	13
Other noninterest expense	227	211
Income before income taxes	73	95
Income tax expense (benefit)	14	29
Net income	59	66
Financial services [Member]	'	'
Financial information of business segments	'	'
Net interest income	0	0
Provision for credit losses	0	0
Net interest income after provision for credit losses	0	0
Noninterest income	16	16
Amortization of intangibles	1	1
Other noninterest expense	14	13
Income before income taxes	1	3
Income tax expense (benefit)	0	1
Net income	$1	$2