Regions Financial (RF) 10-Q 6 Nov 13 2013 Q3 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	9 Months Ended
	Sep. 30, 2013	Nov. 01, 2013
Document Entity Information [Abstract]	'	'
Document Type	'10-Q	'
Amendment Flag	'false	'
Document Period End Date	30-Sep-13	'
Document Fiscal Year Focus	'2013	'
Document Fiscal Period Focus	'Q3	'
Trading Symbol	'RF	'
Entity Registrant Name	'REGIONS FINANCIAL CORP	'
Entity Central Index Key	'0001281761	'
Current Fiscal Year End Date	'--12-31	'
Entity Filer Category	'Large Accelerated Filer	'
Entity Common Stock, Shares Outstanding	'	1,377,552,505

CONSOLIDATED_BALANCE_SHEETS

CONSOLIDATED BALANCE SHEETS (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Assets	'	'
Cash and due from banks	$2,032	$1,979
Interest-bearing deposits in other banks	1,827	3,510
Trading account assets	119	116
Held-to-maturity Securities	2,388	10
Available-for-sale Securities, Fair Value Disclosure	21,630	27,244
Loans held for sale	673	1,383
Loans, net of unearned income	75,892	73,995
Allowance for loan losses	-1,540	-1,919
Net loans	74,352	72,076
Other interest-earning assets	105	900
Premises and equipment, net	2,218	2,279
Interest receivable	331	344
Goodwill	4,816	4,816
Mortgage servicing rights	281	191
Other identifiable intangible assets	307	345
Other assets	5,785	6,154
Total assets	116,864	121,347
Deposits:	'	'
Non-interest-bearing	30,308	29,963
Interest-bearing	62,013	65,511
Total deposits	92,321	95,474
Short-term borrowings:	'	'
Federal funds purchased and securities sold under agreements to repurchase	1,773	1,449
Other short-term borrowings	0	125
Total short-term borrowings	1,773	1,574
Long-term borrowings	4,838	5,861
Total borrowed funds	6,611	7,435
Other liabilities	2,443	2,939
Total liabilities	101,375	105,848
Stockholders' equity:	'	'
Preferred stock, authorized 10 million shares Series A, non-cumulative perpetual, par value $1.00 (liquidation preference $1,000.00) per share, including related surplus, net of discount; Issued—500,000 shares	458	482
Common stock, par value $.01 per share, Authorized 3 billion shares, Issued including treasury stock—1,418,838,161 and 1,454,626,952 shares, respectively	14	15
Additional paid-in capital	19,248	19,652
Retained earnings (deficit)	-2,443	-3,338
Treasury stock, at cost—41,285,656 and 41,287,460 shares, respectively	-1,377	-1,377
Accumulated other comprehensive income (loss), net	-411	65
Total stockholders' equity	15,489	15,499
Total liabilities and stockholders' equity	$116,864	$121,347

CONSOLIDATED_BALANCE_SHEETS_Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Millions, except Share data, unless otherwise specified
Estimated fair value, securities held to maturity	$2,385	$11
Loans held for sale, at fair value	$611	$1,282
Preferred stock, authorized	10,000,000	10,000,000
Common stock, par value	$0.01	$0.01
Common stock, authorized	3,000,000,000	3,000,000,000
Common stock, issued	1,418,838,161	1,454,626,952
Treasury stock, shares	41,285,656	41,287,460
Series A Preferred Stock [Member] | Noncumulative Preferred Stock [Member]	'	'
Series A, non-cumulative perpetual, par value	$1	$1
Series A, non-cumulative perpetual, liquidation preference	$1,000	$1,000
Series A, non-cumulative perpetual, shares issued	500,000	500,000

CONSOLIDATED_STATEMENTS_OF_INC

CONSOLIDATED STATEMENTS OF INCOME (USD $)	3 Months Ended				9 Months Ended
In Millions, except Per Share data, unless otherwise specified	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2013		Sep. 30, 2012
Interest income on:	'		'		'		'
Loans, including fees	$758		$783		$2,247		$2,401
Securities - taxable	144		170		452		523
Loans held for sale	6		9		23		23
Trading account assets	1		0		2		1
Other interest-earning assets	2		2		5		7
Total interest income	911		964		2,729		2,955
Interest expense on:	'		'		'		'
Deposits	31		67		106		231
Short-term borrowings	1		1		2		1
Long-term borrowings	55		79		191		241
Total interest expense	87		147		299		473
Net interest income	824		817		2,430		2,482
Provision for loan losses	18		33		59		176
Net interest income after provision for loan losses	806		784		2,371		2,306
Non-interest income:	'		'		'		'
Service charges on deposit accounts	251		244		730		731
Mortgage income	52		106		193		273
Investment management and trust fee income	50		48		148		147
Securities gains (losses), net	3		12		26		36
Other	139		123		396		377
Total non-interest income	495		533		1,493		1,564
Non-interest expense:	'		'		'		'
Salaries and employee benefits	455		449		1,354		1,325
Net occupancy expense	92		99		274		285
Furniture and equipment expense	71		65		209		196
Other	266		256		773		818
Total non-interest expense	884		869		2,610		2,624
Income from continuing operations before income taxes	417		448		1,254		1,246
Income tax expense	124		136		360		344
Income from continuing operations	293		312		894		902
Discontinued operations:	'		'		'		'
Income (loss) from discontinued operations before income taxes	-1		-19		1		-80
Income tax benefit	-1		-8		0		-33
Income (loss) from discontinued operations, net of tax	0		-11		1		-47
Net income	293		301		895		855
Net income from continuing operations available to common shareholders	285		312		870		777
Net income available to common shareholders	$285		$301		$871		$730
Weighted-average number of shares outstanding:	'		'		'		'
Basic	1,388		1,414		1,401		1,370
Diluted	1,405		1,423		1,415		1,375
Earnings per common share from continuing operations:	'		'		'		'
Basic	$0.21	[1]	$0.22	[1]	$0.62	[1]	$0.57	[1]
Diluted	$0.20	[1]	$0.22	[1]	$0.61	[1]	$0.57	[1]
Earnings per common share:	'		'		'		'
Basic	$0.21	[1]	$0.21	[1]	$0.62	[1]	$0.53	[1]
Diluted	$0.20	[1]	$0.21	[1]	$0.62	[1]	$0.53	[1]
Cash dividends declared per common share	$0.03		$0.01		$0.07		$0.03
[1]	Certain per share amounts may not appear to reconcile due to rounding.

CONSOLIDATED_STATEMENTS_OF_COM

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013		Sep. 30, 2012
Statement of Other Comprehensive Income [Abstract]	'	'	'		'
Net income	$293,000,000	$301,000,000	$895,000,000		$855,000,000
Other Comprehensive Income (Loss), Transfers from Held-to-maturity to Available-for-Sale Securities, Net of Tax	0	0	-68,000,000	[1]	0
Amortization of Unrealized Losses on Securities Transferred to Held to Maturity, Net of Tax	-2,000,000	0	-2,000,000		0
Net change in unrealized losses on securities transferred to held to maturity, Net of Tax	2,000,000	0	-66,000,000		0
Other comprehensive income (loss), net of tax:	'	'	'		'
Unrealized holding gains (losses) arising during the period on securities available for sale (net of tax)	43,000,000	150,000,000	-378,000,000		238,000,000
Less: reclassification adjustments for securities gains realized in net income (net of tax)	2,000,000	7,000,000	17,000,000		23,000,000
Net change in unrealized gains (losses) on securities available for sale, net of tax	41,000,000	143,000,000	-395,000,000		215,000,000
Unrealized gains (losses) on derivative instruments designated as cash flow hedges:	'	'	'		'
Unrealized holding gains (losses) on derivatives arising during the period (net of tax)	28,000,000	4,000,000	-10,000,000		51,000,000
Less: reclassification adjustments for derivative gains (losses) realized in net income (net of tax)	16,000,000	10,000,000	36,000,000		31,000,000
Net change in unrealized gains (losses) on derivative instruments, net of tax	12,000,000	-6,000,000	-46,000,000		20,000,000
Defined benefit pension plans and other post employment benefits:	'	'	'		'
Net actuarial gains (losses) arising during the period (net of tax)	0	0	-2,000,000		2,000,000
Less: reclassification adjustments for amortization of actuarial loss and prior service cost realized in net income, and other (net of tax)	-12,000,000	-11,000,000	-33,000,000		-34,000,000
Net change from defined benefit pension plans, net of tax	12,000,000	11,000,000	31,000,000		36,000,000
Other comprehensive income, net of tax	67,000,000	148,000,000	-476,000,000		271,000,000
Comprehensive income (loss)	$360,000,000	$449,000,000	$419,000,000		$1,126,000,000
[1]	Represents unrealized losses on certain securities previously classified as available for sale securities that were transferred to held to maturity classification. Refer to Note 3 "Securities" for further details.

CONSOLIDATED_STATEMENTS_OF_COM1

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Parenthetical) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Other Comprehensive Income (Loss), Transfers to Held-to-maturity from Available-for-Sale Securities, Tax	$0	$0	($43)	$0
Amortization of unrealized losses on securities transferred to held to maturity, tax	-2	0	-2	0
Unrealized holding gains, tax benefit	26	93	-232	145
Reclassification adjustments for securities gains realized in net income, tax expense	1	5	9	13
Unrealized holding gains on derivatives, tax expenses	18	2	-6	31
Reclassification adjustments for gains realized in net income, tax expense	10	6	22	19
Net actuarial gains and losses arising during the period, tax expense	0	0	0	2
Amortization of actuarial loss and prior service cost realized in net income, and other, tax expense	($7)	($7)	($19)	($20)

CONSOLIDATED_STATEMENTS_OF_CHA

CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (USD $)		Total	Preferred Stock [Member]	Common Stock [Member]		Additional Paid-In Capital [Member]	Retained Earnings (Deficit) [Member]	Treasury Stock, At Cost [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
BALANCE at Dec. 31, 2011	[1]	$16,499,000,000	$3,419,000,000	$13,000,000		$18,855,000,000	($4,322,000,000)	($1,397,000,000)	($69,000,000)
BALANCE (shares) at Dec. 31, 2011	[1]	'	4,000,000	1,259,000,000		'	'	'	'
Net income		855,000,000	'	'		'	855,000,000	'	'
Other Comprehensive Income (Loss), Transfers from Held-to-maturity to Available-for-Sale Securities, Net of Tax		0	'	'		'	'	'	'
Amortization of Unrealized Losses on Securities Transferred to Held to Maturity, Net of Tax		0	'	'		'	'	'	'
Net change in unrealized gains and losses on securities available for sale, net of tax and reclassification adjustment		215,000,000	'	'		'	'	'	215,000,000
Net change in unrealized gains and losses on derivative instruments, net of tax and reclassification adjustment		20,000,000	'	'		'	'	'	20,000,000
Net change from defined benefit pension plans, net of tax		36,000,000	'	'		'	'	'	36,000,000
Cash dividends declared	[1]	-41,000,000	'	'		-41,000,000	'	'	'
Preferred dividends		-44,000,000	'	'		'	-44,000,000	'	'
Preferred stock transactions:		'	'	'		'	'	'	'
Discount accretion		0	10,000,000	'		'	-10,000,000	'	'
Repurchase of series A preferred stock issued to the U.S. Treasury and associated accelerated accretion		-3,500,000,000	-3,429,000,000	'		'	-71,000,000	'	'
Repurchase of series A preferred stock issued to the U.S. Treasury and associated accelerated accretion (shares)		'	-4,000,000	'		'	'	'	'
Repurchase of warrant from the U.S. Treasury		-45,000,000	'	'		-45,000,000	'	'	'
Common stock transactions:		'	'	'		'	'	'	'
Net proceeds from issuance of 153 million shares of common stock		875,000,000	'	2,000,000		873,000,000	'	'	'
Net proceeds from issuance of 153 million shares of common stock (shares)		'	'	153,000,000		'	'	'	'
Impact of stock transactions under compensation plans, net		31,000,000	'	'		22,000,000	-11,000,000	20,000,000	'
Impact of stock transactions under compensation plans, net (shares)		'	'	1,000,000		'	'	'	'
BALANCE at Sep. 30, 2012	[1]	14,901,000,000	0	15,000,000		19,664,000,000	-3,603,000,000	-1,377,000,000	202,000,000
BALANCE (shares) at Sep. 30, 2012		'	0	1,413,000,000	[1]	'	'	'	'
BALANCE at Dec. 31, 2012		15,499,000,000	482,000,000	15,000,000		19,652,000,000	-3,338,000,000	-1,377,000,000	65,000,000
BALANCE (shares) at Dec. 31, 2012		'	1,000,000	1,413,000,000		'	'	'	'
Net income		895,000,000	'	'		'	'	'	'
Other Comprehensive Income (Loss), Transfers from Held-to-maturity to Available-for-Sale Securities, Net of Tax	[2]	-68,000,000	'	'		'	'	'	-68,000,000
Amortization of Unrealized Losses on Securities Transferred to Held to Maturity, Net of Tax		2,000,000	'	'		'	'	'	2,000,000
Net change in unrealized gains and losses on securities available for sale, net of tax and reclassification adjustment		-395,000,000	'	'		'	'	'	-395,000,000
Net change in unrealized gains and losses on derivative instruments, net of tax and reclassification adjustment		-46,000,000	'	'		'	'	'	-46,000,000
Net change from defined benefit pension plans, net of tax		31,000,000	'	'		'	'	'	31,000,000
Cash dividends declared		-97,000,000	'	'		-97,000,000	'	'	'
Preferred dividends		-24,000,000	-24,000,000	'		'	'	'	'
Preferred stock transactions:		'	'	'		'	'	'	'
Repurchase of warrant from the U.S. Treasury		0	'	'		'	'	'	'
Common stock transactions:		'	'	'		'	'	'	'
Impact of share repurchase		-340,000,000	'	-1,000,000		-339,000,000	'	'	'
Impact of share repurchase (shares)		-36,000,000	'	-36,000,000		'	'	'	'
Impact of stock transactions under compensation plans, net		32,000,000	'	'		32,000,000	'	'	'
Impact of stock transactions under compensation plans, net (shares)		'	'	1,000,000		'	'	'	'
BALANCE at Sep. 30, 2013		$15,489,000,000	$458,000,000	$14,000,000		$19,248,000,000	($2,443,000,000)	($1,377,000,000)	($411,000,000)
BALANCE (shares) at Sep. 30, 2013		'	1,000,000	1,378,000,000		'	'	'	'
[1]	Prior period cash dividends declared on common stock have been reclassified from retained earnings (deficit) to additional paid-in capital to correct an error in classification. Refer to Note 14 "Stockholder's Equity and Accumulated Other Comprehensive Income (Loss)" in Regions' Annual Report on Form 10-K for the year ended December 31, 2012 for further discussion.
[2]	Represents unrealized losses on certain securities previously classified as available for sale securities that were transferred to held to maturity classification. Refer to Note 3 "Securities" for further details.

CONSOLIDATED_STATEMENTS_OF_CHA1

CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS EQUITY (Parenthetical) (USD $)	3 Months Ended						9 Months Ended
In Millions, except Per Share data, unless otherwise specified	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Sep. 30, 2013	Sep. 30, 2012
Cash dividends declared, per share	$0.03	$0.03	$0.01	$0.01	$0.01	$0.01	$0.07	$0.03
Common Stock [Member]	'	'	'	'	'	'	'	'
Net proceeds from issuance of 153 million shares of common stock	'	'	'	'	'	'	'	153

CONSOLIDATED_STATEMENTS_OF_CAS

CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012
Operating activities:	'	'
Net income	$895	$855
Adjustments to reconcile net income to net cash from operating activities:	'	'
Provision for loan losses	59	176
Depreciation, amortization and accretion, net	497	530
Provision for losses on other real estate, net	14	24
Securities (gains) losses, net	-26	-36
Gain on disposition of business	0	-16
Deferred income tax expense	310	299
Originations and purchases of loans held for sale	-3,373	-4,598
Proceeds from sales of loans held for sale	4,156	4,393
(Gain) loss on sale of loans, net	-101	-117
(Gains) Losses on Extinguishment of Debt	61	0
Gain (Loss) on Sale of Other Assets	-24	0
Net change in operating assets and liabilities:	'	'
Trading account assets	-3	189
Other interest-earning assets	795	-162
Interest receivable	13	-4
Other assets	331	42
Other liabilities	-451	628
Other	-7	12
Net cash from operating activities	3,146	2,215
Investing activities:	'	'
Proceeds from sales of securities available for sale	3,543	1,745
Proceeds from maturities of securities available for sale	4,611	4,923
Proceeds from maturities of securities held to maturity	41	4
Purchases of securities available for sale	-5,888	-8,812
Proceeds from sales of loans	152	764
Purchases of loans	-733	-661
Payments to Acquire Mortgage Servicing Rights (MSR)	-28	0
Net change in loans	-1,970	1,321
Net purchases of premises and equipment	-122	-114
Proceeds from disposition of business, net of cash transferred	0	855
Net cash from investing activities	-394	25
Financing activities:	'	'
Net change in deposits	-3,153	-746
Net change in short-term borrowings	199	-202
Proceeds from long-term borrowings	750	0
Payments on long-term borrowings	-1,717	-1,853
Cash dividends on common stock	-97	-41
Net proceeds from issuance of common stock	0	875
Payments for Repurchase of Common Stock	-340	0
Payments for Repurchase of Warrants	0	-45
Proceeds from (Payments for) Other Financing Activities	0	1
Net cash from financing activities	-4,382	-5,555
Net change in cash and cash equivalents	-1,630	-3,315
Cash and cash equivalents at beginning of year	5,489	7,245
Cash and cash equivalents at end of period	3,859	3,930
Series A Preferred Stock [Member]	'	'
Financing activities:	'	'
Cash dividends on preferred stock	-24	0
Series A Preferred Stock [Member] | US Treasury and Government [Member]	'	'
Financing activities:	'	'
Cash dividends on preferred stock	0	-44
Repurchase of Series A preferred stock issued to the U.S. Treasury	$0	($3,500)

Basis_of_Presentation

Basis of Presentation	9 Months Ended
	Sep. 30, 2013
Text Block [Abstract]	'
Basis of Presentation	'
	BASIS OF PRESENTATION
	Regions Financial Corporation (“Regions” or the “Company”) provides a full range of banking and bank-related services to individual and corporate customers through its subsidiaries and branch offices located primarily in Alabama, Arkansas, Florida, Georgia, Illinois, Indiana, Iowa, Kentucky, Louisiana, Mississippi, Missouri, North Carolina, South Carolina, Tennessee, Texas and Virginia. The Company is subject to competition from other financial institutions, is subject to the regulations of certain government agencies and undergoes periodic examinations by certain of those regulatory authorities.
	The accounting and reporting policies of Regions and the methods of applying those policies that materially affect the consolidated financial statements conform with accounting principles generally accepted in the United States (“GAAP”) and with general financial services industry practices. The accompanying interim financial statements have been prepared in accordance with the instructions for Form 10-Q and, therefore, do not include all information and notes to the consolidated financial statements necessary for a complete presentation of financial position, results of operations, comprehensive income and cash flows in conformity with GAAP. In the opinion of management, all adjustments, consisting of normal and recurring items, necessary for the fair presentation of the consolidated financial statements have been included. These interim financial statements should be read in conjunction with the consolidated financial statements and notes thereto in Regions’ Form 10-K for the year ended December 31, 2012. Regions has evaluated all subsequent events for potential recognition and disclosure through the filing date of this Form 10-Q.
	On January 11, 2012, Regions entered into an agreement to sell Morgan Keegan & Company, Inc. (“Morgan Keegan”) and related affiliates. The transaction closed on April 2, 2012. See Note 2 and Note 15 for further details. Results of operations for the entities sold are presented separately as discontinued operations for all periods presented on the consolidated statements of income. Other expenses related to the transaction are also included in discontinued operations. This presentation is consistent with the consolidated financial statements included in the 2012 Form 10-K.
	Certain amounts in prior period financial statements have been reclassified to conform to the current period presentation, except as otherwise noted. These reclassifications are immaterial and have no effect on net income, comprehensive income, total assets or total stockholders’ equity as previously reported.

Discontinued_Operations

Discontinued Operations	9 Months Ended
	Sep. 30, 2013
Text Block [Abstract]	'
Discontinued Operations	'
	DISCONTINUED OPERATIONS
	On January 11, 2012, Regions entered into a stock purchase agreement to sell Morgan Keegan and related affiliates to Raymond James Financial, Inc. (“Raymond James”). The transaction closed on April 2, 2012. Regions Investment Management, Inc. (formerly known as Morgan Asset Management, Inc.) and Regions Trust were not included in the sale. In connection with the closing of the sale, Regions agreed to indemnify Raymond James for all litigation matters related to pre-closing activities. See Note 15 for related disclosure.
	The following table represents the condensed results of operations for discontinued operations for the three and nine months ended September 30:
		Three Months Ended September 30						Nine Months Ended September 30
		2013			2012			2013			2012
		(In millions, except per share data)
	Interest income	$	—		$	—		$	—		$	8
	Interest expense	—			—			—			1
	Net interest income	—			—			—			7
	Non-interest income:
	Brokerage, investment banking and capital markets	—			—			—			233
	Gain on sale	—			1			—			16
	Other	—			—			—			7
	Total non-interest income	—			1			—			256
	Non-interest expense:
	Salaries and employee benefits	—			—			—			171
	Net occupancy expense	—			—			—			9
	Furniture and equipment expense	—			—			—			8
	Professional and legal expenses	3			19			(1		)	125
	Other	(2		)	1			—			30
	Total non-interest expense	1			20			(1		)	343
	Income (loss) from discontinued operations before income taxes	(1		)	(19		)	1			(80		)
	Income tax expense (benefit)	(1		)	(8		)	—			(33		)
	Income (loss) from discontinued operations, net of tax	$	—		$	(11	)	$	1		$	(47	)
	Earnings (loss) per common share from discontinued operations:
	Basic	$	(0.00	)	$	(0.01	)	$	0		$	(0.04	)
	Diluted	$	(0.00	)	$	(0.01	)	$	0		$	(0.04	)

Securities

Securities	9 Months Ended
	Sep. 30, 2013
Text Block [Abstract]	'
Securities	'
	SECURITIES
	The amortized cost, gross unrealized gains and losses, and estimated fair value of securities held to maturity and securities available for sale are as follows:
		30-Sep-13
						Recognized in OCI (1)												Not recognized in OCI
		Amortized				Gross Unrealized Gains				Gross Unrealized Losses				Carrying Value				Gross			Gross				Estimated
		Cost																Unrealized			Unrealized				Fair
																		Gains			Losses				Value
		(In millions)
	Securities held to maturity:
	U.S. Treasury securities	$	2			$	—			$	—			$	2			$	—		$	—			$	2
	Federal agency securities	350				—				(15		)		335				1			—				336
	Mortgage-backed securities:
	Residential agency	1,914				—				(83		)		1,831				3			(6		)		1,828
	Commercial agency	229				—				(9		)		220				—			(1		)		219
		$	2,495			$	—			$	(107	)		$	2,388			$	4		$	(7	)		$	2,385
	Securities available for sale:
	U.S. Treasury securities	$	51			$	1			$	—			$	52										$	52
	Federal agency securities	98				1				—				99											99
	Obligations of states and political subdivisions	5				—				—				5											5
	Mortgage-backed securities:
	Residential agency	15,770				236				(101		)		15,905											15,905
	Residential non-agency	9				1				—				10											10
	Commercial agency	864				5				(14		)		855											855
	Commercial non-agency	1,211				12				(30		)		1,193											1,193
	Corporate and other debt securities	2,868				34				(88		)		2,814											2,814
	Equity securities	689				8				—				697											697
		$	21,565			$	298			$	(233	)		$	21,630										$	21,630
	_________
	(1) The gross unrealized losses recognized in other comprehensive income (OCI) on held to maturity securities resulted from a transfer of available for sale securities to held to maturity in the second quarter of 2013.
		December 31, 2012
		Amortized				Gross Unrealized Gains				Gross Unrealized Losses				Estimated
		Cost												Fair
														Value
		(In millions)
	Securities held to maturity:
	U.S. Treasury securities	$	2			$	—			$	—			$	2
	Federal agency securities	2				—				—				2
	Mortgage-backed securities:
	Residential agency	6				1				—				7
		$	10			$	1			$	—			$	11
	Securities available for sale:
	U.S. Treasury securities	$	50			$	2			$	—			$	52
	Federal agency securities	550				4				(1		)		553
	Obligations of states and political subdivisions	9				—				—				9
	Mortgage-backed securities:
	Residential agency	20,721				574				(18		)		21,277
	Residential non-agency	12				1				—				13
	Commercial agency	705				20				—				725
	Commercial non-agency	1,055				43				—				1,098
	Corporate and other debt securities	2,762				81				(8		)		2,835
	Equity securities	679				4				(1		)		682
		$	26,543			$	729			$	(28	)		$	27,244
	During the second quarter of 2013, Regions transferred securities with a fair value of $2.4 billion from available for sale to held to maturity. Management determined it has both the positive intent and ability to hold these securities to maturity. The securities were reclassified at fair value at the time of transfer and represented a non-cash transaction. Accumulated other comprehensive income included net pre-tax unrealized losses of $111 million on the securities at the date of transfer. These unrealized losses and the offsetting OCI components are being amortized into net interest income over the remaining life of the related securities as a yield adjustment, resulting in no impact on future net income.
	Equity securities in the tables above included the following amortized cost related to Federal Reserve Bank stock and Federal Home Loan Bank (“FHLB”) stock. Shares in the Federal Reserve Bank and FHLB are accounted for at amortized cost, which approximates fair value.
			September 30, 2013				December 31, 2012
			(In millions)
	Federal Reserve Bank		$	495			$	484
	Federal Home Loan Bank		67				73
	Securities with carrying values of $12.2 billion and $11.8 billion at September 30, 2013 and December 31, 2012, respectively, were pledged to secure public funds, trust deposits and certain borrowing arrangements.
	The amortized cost and estimated fair value of securities available for sale and securities held to maturity at September 30, 2013, by contractual maturity, are shown below. Expected maturities will differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties.
			Amortized				Estimated
			Cost				Fair Value
			(In millions)
Securities held to maturity:
Due in one year or less		$	1			$	1
Due after one year through five years		2				2
Due after five years through ten years		349				335
Mortgage-backed securities:
Residential agency		1,914				1,828
Commercial agency		229				219
		$	2,495			$	2,385
Securities available for sale:
Due in one year or less		$	49			$	49
Due after one year through five years		1,035				1,047
Due after five years through ten years		1,555				1,500
Due after ten years		383				374
Mortgage-backed securities:
Residential agency		15,770				15,905
Residential non-agency		9				10
Commercial agency		864				855
Commercial non-agency		1,211				1,193
Equity securities		689				697
		$	21,565			$	21,630
The following tables present gross unrealized losses and the related estimated fair value of securities available for sale and held to maturity at September 30, 2013 and for securities available for sale at December 31, 2012. There were no gross unrealized losses on debt securities held to maturity at December 31, 2012. For securities transferred to held for maturity from available for sale, the analysis in the tables below is comparing the securities' original amortized cost to its current estimated fair value. These securities are segregated between investments that have been in a continuous unrealized loss position for less than twelve months and twelve months or more.
		30-Sep-13
		Less Than Twelve								Twelve Months or More								Total
		Months
		Estimated				Gross				Estimated				Gross				Estimated			Gross
		Fair				Unrealized				Fair				Unrealized				Fair			Unrealized
		Value				Losses				Value				Losses				Value			Losses
		(In millions)
Securities held to maturity:
Federal agency securities		$	335			$	(14	)		$	—			$	—			$	335		$	(14	)
Mortgage-backed securities:
Residential agency		1,515				(71		)		311				(15		)		1,826			(86		)
Commercial agency		218				(10		)		—				—				218			(10		)
		$	2,068			$	(95	)		$	311			$	(15	)		$	2,379		$	(110	)
Securities available for sale:
U.S. Treasury securities		$	6			$	—			$	9			$	—			$	15		$	—
Federal agency securities		1				—				10				—				11			—
Mortgage-backed securities:
Residential agency		4,465				(94		)		273				(7		)		4,738			(101		)
Commercial agency		467				(14		)		—				—				467			(14		)
Commercial non-agency		709				(30		)		—				—				709			(30		)
All other securities		1,716				(86		)		21				(2		)		1,737			(88		)
		$	7,364			$	(224	)		$	313			$	(9	)		$	7,677		$	(233	)
		December 31, 2012
		Less Than Twelve								Twelve Months or More								Total
		Months
		Estimated				Gross				Estimated				Gross				Estimated			Gross
		Fair				Unrealized				Fair				Unrealized				Fair			Unrealized
		Value				Losses				Value				Losses				Value			Losses
		(In millions)
Securities available for sale:
Federal agency securities		$	350			$	(1	)		$	—			$	—			$	350		$	(1	)
Mortgage-backed securities:
Residential agency		1,777				(16		)		157				(2		)		1,934			(18		)
All other securities		884				(9		)		—				—				884			(9		)
		$	3,011			$	(26	)		$	157			$	(2	)		$	3,168		$	(28	)
The number of individual securities in an unrealized loss position in the tables above increased from 378 at December 31, 2012 to 915 at September 30, 2013. The increase in the number of securities and the total amount of unrealized losses from year-end 2012 was primarily due to changes in interest rates. In some instances, spread widening also contributed to some degradation; however, there was no indication of an adverse change in credit on any of the underlying securities in the tables above. Management believes no individual unrealized loss represented an other-than-temporary impairment as of those dates. The Company does not intend to sell, and it is not more likely than not that the Company will be required to sell, the securities before the recovery of their amortized cost basis, which may be at maturity.
Credit-related impairment charges were immaterial for the three and nine months ended September 30, 2013. For the three and nine months ended September 30, 2012, Regions recorded a credit-related impairment charge of approximately zero and $2 million, respectively.
Gross realized gains and gross realized losses on sales of securities available for sale are shown in the table below. The cost of securities sold is based on the specific identification method.
		Three Months Ended September 30								Nine Months Ended September 30
		2013				2012				2013				2012
		(In millions)
Gross realized gains		$	7			$	13			$	52			$	37
Gross realized losses		(4		)		(1		)		(26		)		(1		)
Securities gains, net		$	3			$	12			$	26			$	36

Loans_and_the_Allowance_for_Cr

Loans and the Allowance for Credit Losses	9 Months Ended
	Sep. 30, 2013
Text Block [Abstract]	'
Loans and the Allowance for Credit Losses	'
	LOANS AND THE ALLOWANCE FOR CREDIT LOSSES
	LOANS
	The following table presents the distribution of Regions' loan portfolio by segment and class, net of unearned income:
			September 30, 2013				December 31, 2012
			(In millions, net of unearned income)
	Commercial and industrial		$	29,863			$	26,674
	Commercial real estate mortgage—owner-occupied		9,566				10,095
	Commercial real estate construction—owner-occupied		377				302
	Total commercial		39,806				37,071
	Commercial investor real estate mortgage		5,613				6,808
	Commercial investor real estate construction		1,317				914
	Total investor real estate		6,930				7,722
	Residential first mortgage		12,856				12,963
	Home equity		11,349				11,800
	Indirect		2,889				2,336
	Consumer credit card		896				906
	Other consumer		1,166				1,197
	Total consumer		29,156				29,202
			$	75,892			$	73,995
	During the three months ended September 30, 2013 and 2012, Regions purchased approximately $277 million and $254 million, respectively, in indirect loans from a third party. During the nine months ended September 30, 2013 and 2012, the comparable loan purchase amounts were approximately $733 million and $661 million, respectively.
	At September 30, 2013, $11.5 billion in loans held by Regions were pledged to secure borrowings from the FHLB. At September 30, 2013, an additional $25.7 billion of loans held by Regions were pledged to the Federal Reserve Bank.
	ALLOWANCE FOR CREDIT LOSSES
	The allowance for credit losses represents management’s estimate of credit losses inherent in the loan and credit commitment portfolios as of period-end. The allowance for credit losses consists of two components: the allowance for loan and lease losses and the reserve for unfunded credit commitments. Management’s assessment of the appropriateness of the allowance for credit losses is based on a combination of both of these components. Regions determines its allowance for credit losses in accordance with applicable accounting literature as well as regulatory guidance related to receivables and contingencies. Binding unfunded credit commitments include items such as letters of credit, financial guarantees and binding unfunded loan commitments.
	ROLLFORWARD OF ALLOWANCE FOR CREDIT LOSSES
	The following tables present analyses of the allowance for credit losses by portfolio segment for the three and nine months ended September 30, 2013 and 2012. The total allowance for loan losses and the related loan portfolio ending balances as of September 30, 2013 and 2012 are disaggregated to detail the amounts derived through individual evaluation and collective evaluation for impairment. Prior to the second quarter of 2013, only impaired loans with the amount of impairment measured at a note-level (i.e. non-accrual commercial and investor real-estate loans greater than or equal to $2.5 million) were reported as individually evaluated in the tables below. In the second quarter of 2013, Regions revised its presentation to also reflect all TDRs as individually evaluated for impairment. The allowance for loan losses and the loan portfolio ending balances related to collectively evaluated loans included the remainder of the portfolio. Prior period amounts were reclassified to conform to this presentation.
	Beginning in the third quarter of 2013, Regions revised its estimation process for non-accrual commercial and investor real-estate loans less than $2.5 million to utilize the same discounted cash flow analysis used for accruing and non-accruing TDRs less than $2.5 million described in Note 1 to the Annual Report on Form 10-K for the year ended December 31, 2012. This change in the estimation process did not have a material impact to the overall level of the allowance for loan losses or the provision for loan losses. As a result, the September 30, 2013 allowance for loan losses and the loan portfolio ending balances for loans individually evaluated for impairment reflect this revision in the tables below.
			Three Months Ended September 30, 2013
			Commercial				Investor Real				Consumer				Total
							Estate
			(In millions)
	Allowance for loan losses, July 1, 2013		$	764			$	342			$	530			$	1,636
	Provision (credit) for loan losses		29				(37		)		26				18
	Loan losses:
	Charge-offs		(54		)		(13		)		(89		)		(156		)
	Recoveries		17				8				17				42
	Net loan losses		(37		)		(5		)		(72		)		(114		)
	Allowance for loan losses, September 30, 2013		756				300				484				1,540
	Reserve for unfunded credit commitments,		$	60			$	9			$	4			$	73
	1-Jul-13
	Provision (credit) for unfunded credit losses		3				(1		)		(1		)		1
	Reserve for unfunded credit commitments, September 30, 2013		63				8				3				74
	Allowance for credit losses, September 30, 2013		$	819			$	308			$	487			$	1,614
			Three Months Ended September 30, 2012
			Commercial				Investor Real				Consumer				Total
							Estate
			(In millions)
	Allowance for loan losses, July 1, 2012		$	884			$	766			$	641			$	2,291
	Provision (credit) for loan losses		37				(112		)		108				33
	Loan losses:
	Charge-offs		(91		)		(74		)		(133		)		(298		)
	Recoveries		17				4				15				36
	Net loan losses		(74		)		(70		)		(118		)		(262		)
	Allowance for loan losses, September 30, 2012		847				584				631				2,062
	Reserve for unfunded credit commitments,		$	61			$	26			$	4			$	91
	1-Jul-12
	Credit for unfunded credit losses		(3		)		(12		)		—				(15		)
	Reserve for unfunded credit commitments, September 30, 2012		58				14				4				76
	Allowance for credit losses, September 30, 2012		$	905			$	598			$	635			$	2,138
			Nine Months Ended September 30, 2013
			Commercial				Investor Real				Consumer				Total
							Estate
			(In millions)
	Allowance for loan losses, January 1, 2013		$	847			$	469			$	603			$	1,919
Provision (credit) for loan losses		86				(136		)		109				59
Loan losses:
Charge-offs		(230		)		(59		)		(281		)		(570		)
Recoveries		53				26				53				132
Net loan losses		(177		)		(33		)		(228		)		(438		)
Allowance for loan losses, September 30, 2013		756				300				484				1,540
Reserve for unfunded credit commitments, January 1, 2013		$	69			$	10			$	4			$	83
Credit for unfunded credit losses		(6		)		(2		)		(1		)		(9		)
Reserve for unfunded credit commitments, September 30, 2013		63				8				3				74
Allowance for credit losses, September 30, 2013		$	819			$	308			$	487			$	1,614
Portion of ending allowance for loan losses:
Individually evaluated for impairment		$	261			$	159			$	162			$	582
Collectively evaluated for impairment		495				141				322				958
Total allowance for loan losses		$	756			$	300			$	484			$	1,540
Portion of loan portfolio ending balance:
Individually evaluated for impairment		$	1,184			$	1,006			$	1,589			$	3,779
Collectively evaluated for impairment		38,622				5,924				27,567				72,113
Total loans evaluated for impairment		$	39,806			$	6,930			$	29,156			$	75,892
		Nine Months Ended September 30, 2012
		Commercial				Investor Real				Consumer				Total
						Estate
		(In millions)
Allowance for loan losses, January 1, 2012		$	1,030			$	991			$	724			$	2,745
Provision (credit) for loan losses		82				(202		)		296				176
Loan losses:
Charge-offs		(323		)		(231		)		(435		)		(989		)
Recoveries		58				26				46				130
Net loan losses		(265		)		(205		)		(389		)		(859		)
Allowance for loan losses, September 30, 2012		847				584				631				2,062
Reserve for unfunded credit commitments,		$	30			$	26			$	22			$	78
1-Jan-12
Provision (credit) for unfunded credit losses		28				(12		)		(18		)		(2		)
Reserve for unfunded credit commitments, September 30, 2012		58				14				4				76
Allowance for credit losses, September 30, 2012		$	905			$	598			$	635			$	2,138
Portion of ending allowance for loan losses:
Individually evaluated for impairment*		$	222			$	276			$	203			$	701
Collectively evaluated for impairment*		625				308				428				1,361
Total allowance for loan losses		$	847			$	584			$	631			$	2,062
Portion of loan portfolio ending balance:
Individually evaluated for impairment*		$	1,136			$	1,459			$	1,657			$	4,252
Collectively evaluated for impairment*		35,856				7,254				27,897				71,007
Total loans evaluated for impairment		$	36,992			$	8,713			$	29,554			$	75,259
_________
*As discussed above, prior period amounts have been reclassified to conform to the current period classification.
PORTFOLIO SEGMENT RISK FACTORS
The following describe the risk characteristics relevant to each of the portfolio segments.
Commercial—The commercial loan portfolio segment includes commercial and industrial loans to commercial customers for use in normal business operations to finance working capital needs, equipment purchases or other expansion projects. Commercial also includes owner-occupied commercial real estate loans to operating businesses, which are loans for long-term financing of land and buildings, and are repaid by cash flow generated by business operations. Owner-occupied construction loans are made to commercial businesses for the development of land or construction of a building where the repayment is derived from revenues generated from the business of the borrower. Collection risk in this portfolio is driven by the creditworthiness of underlying borrowers, particularly cash flow from customers’ business operations.
Investor Real Estate—Loans for real estate development are repaid through cash flow related to the operation, sale or refinance of the property. This portfolio segment includes extensions of credit to real estate developers or investors where repayment is dependent on the sale of real estate or income generated from the real estate collateral. A portion of Regions’ investor real estate portfolio segment is comprised of loans secured by residential product types (land, single-family and condominium loans) within Regions’ markets. Additionally, these loans are made to finance income-producing properties such as apartment buildings, office and industrial buildings, and retail shopping centers. Loans in this portfolio segment are particularly sensitive to valuation of real estate.
Consumer—The consumer loan portfolio segment includes residential first mortgage, home equity, indirect, consumer credit card, and other consumer loans. Residential first mortgage loans represent loans to consumers to finance a residence. These loans are typically financed over a 15 to 30 year term and, in most cases, are extended to borrowers to finance their primary residence. Home equity lending includes both home equity loans and lines of credit. This type of lending, which is secured by a first or second mortgage on the borrower’s residence, allows customers to borrow against the equity in their home. Real estate market values as of the time the loan or line is secured directly affect the amount of credit extended and, in addition, changes in these values impact the depth of potential losses. Indirect lending, which is lending initiated through third-party business partners, is largely comprised of loans made through automotive dealerships. Consumer credit card includes Regions branded consumer credit card accounts. Other consumer loans include direct consumer installment loans and overdrafts. Loans in this portfolio segment are sensitive to unemployment and other key consumer economic measures.
CREDIT QUALITY INDICATORS
The following tables present credit quality indicators for the loan portfolio segments and classes, excluding loans held for sale, as of September 30, 2013 and December 31, 2012. Commercial and investor real estate loan portfolio segments are detailed by categories related to underlying credit quality and probability of default. Regions assigns these categories at loan origination and reviews the relationship utilizing a risk-based approach on, at minimum, an annual basis or at any time management becomes aware of information affecting the borrowers' ability to fulfill their obligations. Both quantitative and qualitative factors are considered in this review process. These categories are utilized to develop the associated allowance for credit losses.
•	Pass—includes obligations where the probability of default is considered low;
•	Special Mention—includes obligations that have potential weakness which may, if not reversed or corrected, weaken the credit or inadequately protect the Company’s position at some future date. Obligations in this category may also be subject to economic or market conditions which may, in the future, have an adverse effect on debt service ability;
•	Substandard Accrual—includes obligations that exhibit a well-defined weakness which presently jeopardizes debt repayment, even though they are currently performing. These obligations are characterized by the distinct possibility that the Company may incur a loss in the future if these weaknesses are not corrected;
•	Non-accrual—includes obligations where management has determined that full payment of principal and interest is in doubt.
Substandard accrual and non-accrual loans are often collectively referred to as “classified.” Special mention, substandard accrual, and non-accrual loans are often collectively referred to as “criticized and classified.” Classes in the consumer portfolio segment are disaggregated by accrual status.
		30-Sep-13
		Pass				Special Mention				Substandard				Non-accrual				Total
										Accrual
		(In millions)
Commercial and industrial		$	28,502			$	467			$	511			$	383			$	29,863
Commercial real estate mortgage—owner-occupied		8,683				228				291				364				9,566
Commercial real estate construction—owner-occupied		331				29				5				12				377
Total commercial		$	37,516			$	724			$	807			$	759			$	39,806
Commercial investor real estate mortgage		$	4,493			$	272			$	572			$	276			$	5,613
Commercial investor real estate construction		1,215				39				32				31				1,317
Total investor real estate		$	5,708			$	311			$	604			$	307			$	6,930
										Accrual				Non-accrual				Total
										(In millions)
Residential first mortgage										$	12,689			$	167			$	12,856
Home equity										11,228				121				11,349
Indirect										2,889				—				2,889
Consumer credit card										896				—				896
Other consumer										1,166				—				1,166
Total consumer										$	28,868			$	288			$	29,156
																		$	75,892
		December 31, 2012
		Pass				Special				Substandard				Non-accrual				Total
						Mention				Accrual
		(In millions)
Commercial and industrial		$	25,225			$	560			$	480			$	409			$	26,674
Commercial real estate mortgage—owner-occupied		8,976				240				440				439				10,095
Commercial real estate construction—owner-occupied		278				3				7				14				302
Total commercial		$	34,479			$	803			$	927			$	862			$	37,071
Commercial investor real estate mortgage		$	5,089			$	435			$	827			$	457			$	6,808
Commercial investor real estate construction		733				98				63				20				914
Total investor real estate		$	5,822			$	533			$	890			$	477			$	7,722
										Accrual				Non-accrual				Total
										(In millions)
Residential first mortgage										$	12,749			$	214			$	12,963
Home equity										11,672				128				11,800
Indirect										2,336				—				2,336
Consumer credit card										906				—				906
Other consumer										1,197				—				1,197
Total consumer										$	28,860			$	342			$	29,202
																		$	73,995
AGING ANALYSIS
The following tables include an aging analysis of days past due (DPD) for each portfolio segment and class as of September 30, 2013 and December 31, 2012:
		30-Sep-13
		Accrual Loans
		30-59 DPD				60-89 DPD				90+ DPD				Total				Total			Non-accrual			Total
														30+ DPD				Accrual
		(In millions)
Commercial and industrial		$	18			$	13			$	6			$	37			$	29,480		$	383		$	29,863
Commercial real estate		42				14				7				63				9,202			364			9,566
mortgage—owner-occupied
Commercial real estate construction—owner-occupied		1				—				—				1				365			12			377
Total commercial		61				27				13				101				39,047			759			39,806
Commercial investor real estate mortgage		62				56				15				133				5,337			276			5,613
Commercial investor real estate construction		1				3				1				5				1,286			31			1,317
Total investor real estate		63				59				16				138				6,623			307			6,930
Residential first mortgage		124				70				246				440				12,689			167			12,856
Home equity		89				42				72				203				11,228			121			11,349
Indirect		31				8				4				43				2,889			—			2,889
Consumer credit card		8				4				12				24				896			—			896
Other consumer		15				5				4				24				1,166			—			1,166
Total consumer		267				129				338				734				28,868			288			29,156
		$	391			$	215			$	367			$	973			$	74,538		$	1,354		$	75,892
		December 31, 2012
		Accrual Loans
		30-59 DPD				60-89 DPD				90+ DPD				Total				Total			Non-accrual			Total
														30+ DPD				Accrual
		(In millions)
Commercial and industrial		$	27			$	23			$	19			$	69			$	26,265		$	409		$	26,674
Commercial real estate		49				28				6				83				9,656			439			10,095
mortgage—owner-occupied
Commercial real estate construction—owner-occupied		—				—				—				—				288			14			302
Total commercial		76				51				25				152				36,209			862			37,071
Commercial investor real estate mortgage		38				42				11				91				6,351			457			6,808
Commercial investor real estate construction		1				1				—				2				894			20			914
Total investor real estate		39				43				11				93				7,245			477			7,722
Residential first mortgage		149				86				307				542				12,749			214			12,963
Home equity		100				53				87				240				11,672			128			11,800
Indirect		31				9				3				43				2,336			—			2,336
Consumer credit card		7				7				14				28				906			—			906
Other consumer		19				5				3				27				1,197			—			1,197
Total consumer		306				160				414				880				28,860			342			29,202
		$	421			$	254			$	450			$	1,125			$	72,314		$	1,681		$	73,995
IMPAIRED LOANS
The following tables present details related to the Company’s impaired loans as of September 30, 2013 and December 31, 2012. Loans deemed to be impaired include all non-accrual commercial and investor real estate loans (including those less than $2.5 million), excluding leases, and all troubled debt restructurings ("TDRs") (including accruing TDRs). Loans which have been fully charged-off do not appear in the tables below.
	Non-accrual Impaired Loans As of September 30, 2013
									Book Value(3)
	Unpaid				Charge-offs				Total				Impaired				Impaired			Related			Coverage %(4)
	Principal				and Payments				Impaired				Loans on				Loans on			Allowance
	Balance(1)				Applied(2)				Loans on				Non-accrual				Non-accrual			for Loan
									Non-accrual				Status with				Status with			Losses
									Status				No Related				Related
													Allowance				Allowance
	(Dollars in millions)
Commercial and industrial	$	446			$	84			$	362			$	49			$	313		$	94		39.9	%
Commercial real estate mortgage—owner-occupied	412				48				364				46				318			108			37.9
Commercial real estate construction—owner-occupied	13				1				12				—				12			6			53.8
Total commercial	871				133				738				95				643			208			39.2
Commercial investor real estate mortgage	358				82				276				24				252			75			43.9
Commercial investor real estate construction	37				6				31				—				31			10			43.2
Total investor real estate	395				88				307				24				283			85			43.8
Residential first mortgage	133				44				89				—				89			11			41.4
Home equity	18				—				18				—				18			1			5.6
Total consumer	151				44				107				—				107			12			37.1
Total	$	1,417			$	265			$	1,152			$	119			$	1,033		$	305		40.2	%
		Accruing Impaired Loans As of September 30, 2013
		Unpaid				Charge-offs				Book Value(3)				Related				Coverage %(4)
		Principal				and Payments								Allowance for
		Balance(1)				Applied(2)								Loan Losses
		(Dollars in millions)
Commercial and industrial		$	258			$	5			$	253			$	35			15.5	%
Commercial real estate mortgage—owner-occupied		172				4				168				17				12.2
Commercial real estate construction—owner-occupied		26				1				25				1				7.7
Total commercial		456				10				446				53				13.8
Commercial investor real estate mortgage		638				13				625				66				12.4
Commercial investor real estate construction		74				—				74				8				10.8
Total investor real estate		712				13				699				74				12.2
Residential first mortgage		1,086				15				1,071				124				12.8
Home equity		379				—				379				26				6.9
Indirect		1				—				1				—				—
Consumer credit card		2				—				2				—				—
Other consumer		29				—				29				—				—
Total consumer		1,497				15				1,482				150				11
Total		$	2,665			$	38			$	2,627			$	277			11.8	%
	Total Impaired Loans As of September 30, 2013
									Book Value(3)
	Unpaid				Charge-offs				Total				Impaired				Impaired			Related			Coverage %(4)
	Principal				and Payments				Impaired				Loans with No				Loans with			Allowance
	Balance(1)				Applied(2)				Loans				Related				Related			for Loan
													Allowance				Allowance			Losses
	(Dollars in millions)
Commercial and industrial	$	704			$	89			$	615			$	49			$	566		$	129		31	%
Commercial real estate mortgage—owner-	584				52				532				46				486			125			30.3
occupied
Commercial real estate construction—owner-occupied	39				2				37				—				37			7			23.1
Total commercial	1,327				143				1,184				95				1,089			261			30.4
Commercial investor real estate mortgage	996				95				901				24				877			141			23.7
Commercial investor real estate construction	111				6				105				—				105			18			21.6
Total investor real estate	1,107				101				1,006				24				982			159			23.5
Residential first mortgage	1,219				59				1,160				—				1,160			135			15.9
Home equity	397				—				397				—				397			27			6.8
Indirect	1				—				1				—				1			—			—
Consumer credit card	2				—				2				—				2			—			—
Other consumer	29				—				29				—				29			—			—
Total consumer	1,648				59				1,589				—				1,589			162			13.4
Total impaired loans	$	4,082			$	303			$	3,779			$	119			$	3,660		$	582		21.7	%
_________
-1	Unpaid principal balance represents the contractual obligation due from the customer and includes the net book value plus charge-offs and payments applied.
-2	Charge-offs and payments applied represents cumulative partial charge-offs taken, as well as interest payments received that have been applied against the outstanding principal balance.
-3	Book value represents the unpaid principal balance less charge-offs and payments applied; it is shown before any allowance for loan losses.
-4	Coverage % represents charge-offs and payments applied plus the related allowance as a percent of the unpaid principal balance.
	Non-accrual Impaired Loans As of December 31, 2012
									Book Value(3)
	Unpaid				Charge-offs				Total				Impaired				Impaired			Related			Coverage %(4)
	Principal				and Payments				Impaired				Loans on				Loans on			Allowance
	Balance(1)				Applied(2)				Loans on				Non-accrual				Non-accrual			for Loan
									Non-accrual				Status with				Status with			Losses
									Status				No Related				Related
													Allowance				Allowance
	(Dollars in millions)
Commercial and industrial	$	467			$	62			$	405			$	63			$	342		$	128		40.7	%
Commercial real estate mortgage—owner-occupied	503				64				439				44				395			148			42.1
Commercial real estate construction—owner-occupied	18				4				14				4				10			3			38.9
Total commercial	988				130				858				111				747			279			41.4
Commercial investor real estate mortgage	560				103				457				54				403			132			42
Commercial investor real estate construction	26				6				20				2				18			7			50
Total investor real estate	586				109				477				56				421			139			42.3
Residential first mortgage	152				55				97				—				97			13			44.7
Home equity	32				11				21				—				21			2			40.6
Total consumer	184				66				118				—				118			15			44
Total	$	1,758			$	305			$	1,453			$	167			$	1,286		$	433		42	%
		Accruing Impaired Loans As of December 31, 2012
		Unpaid				Charge-offs				Book Value(3)				Related				Coverage %(4)
		Principal				and Payments								Allowance for
		Balance(1)				Applied(2)								Loan Losses
		(Dollars in millions)
Commercial and industrial		$	299			$	7			$	292			$	42			16.4	%
Commercial real estate mortgage—owner-occupied		213				4				209				25				13.6
Commercial real estate construction—owner-occupied		1				—				1				—				—
Total commercial		513				11				502				67				15.2
Commercial investor real estate mortgage		782				10				772				97				13.7
Commercial investor real estate construction		107				—				107				16				15
Total investor real estate		889				10				879				113				13.8
Residential first mortgage		1,101				13				1,088				144				14.3
Home equity		411				5				406				36				10
Indirect		2				1				1				—				50
Other consumer		40				—				40				1				2.5
Total consumer		1,554				19				1,535				181				12.9
Total		$	2,956			$	40			$	2,916			$	361			13.6	%
	Total Impaired Loans As of December 31, 2012
									Book Value(3)
	Unpaid				Charge-offs				Total				Impaired				Impaired			Related			Coverage %(4)
	Principal				and Payments				Impaired				Loans with No				Loans with			Allowance for
	Balance(1)				Applied(2)				Loans				Related				Related			Loan Losses
													Allowance				Allowance
	(Dollars in millions)
Commercial and industrial	$	766			$	69			$	697			$	63			$	634		$	170		31.2	%
Commercial real estate mortgage—owner-	716				68				648				44				604			173			33.7
occupied
Commercial real estate construction—owner-occupied	19				4				15				4				11			3			36.8
Total commercial	1,501				141				1,360				111				1,249			346			32.4
Commercial investor real estate mortgage	1,342				113				1,229				54				1,175			229			25.5
Commercial investor real estate construction	133				6				127				2				125			23			21.8
Total investor real estate	1,475				119				1,356				56				1,300			252			25.2
Residential first mortgage	1,253				68				1,185				—				1,185			157			18
Home equity	443				16				427				—				427			38			12.2
Indirect	2				1				1				—				1			—			50
Other consumer	40				—				40				—				40			1			2.5
Total consumer	1,738				85				1,653				—				1,653			196			16.2
Total impaired loans	$	4,714			$	345			$	4,369			$	167			$	4,202		$	794		24.2	%
_________
-1	Unpaid principal balance represents the contractual obligation due from the customer and includes the net book value plus charge-offs and payments applied.
-2	Charge-offs and payments applied represents cumulative partial charge-offs taken, as well as interest payments received that have been applied against the outstanding principal balance.
-3	Book value represents the unpaid principal balance less charge-offs and payments applied; it is shown before any allowance for loan losses.
-4	Coverage % represents charge-offs and payments applied plus the related allowance as a percent of the unpaid principal balance.
The following table presents the average balances of total impaired loans and interest income for the three and nine months ended September 30, 2013 and 2012. Interest income recognized represents interest on accruing loans modified in a TDR. TDRs are considered impaired loans.
		Three Months Ended September 30																Nine Months Ended September 30
		2013								2012								2013						2012
		Average				Interest				Average				Interest				Average			Interest			Average		Interest
		Balance				Income				Balance				Income				Balance			Income			Balance		Income
						Recognized								Recognized							Recognized					Recognized
		(In millions)
Commercial and industrial		$	636			$	4			$	721			$	4			$	649		$	10		$	707	$	12
Commercial real estate mortgage—owner-occupied		551				2				714				3				598			8			752		8
Commercial real estate construction—owner-occupied		40				—				22				—				38			1			26		—
Total commercial		1,227				6				1,457				7				1,285			19			1,485		20
Commercial investor real estate mortgage		940				7				1,520				10				1,071			24			1,572		31
Commercial investor real estate construction		108				1				178				2				121			5			230		5
Total investor real estate		1,048				8				1,698				12				1,192			29			1,802		36
Residential first mortgage		1,163				9				1,169				10				1,176			28			1,148		29
Home equity		401				5				435				5				411			16			441		17
Indirect		1				—				2				—				1			—			2		—
Consumer credit card		2				—				—				—				1			—			—		—
Other consumer		30				1				45				1				34			2			49		2
Total consumer		1,597				15				1,651				16				1,623			46			1,640		48
Total impaired loans		$	3,872			$	29			$	4,806			$	35			$	4,100		$	94		$	4,927	$	104
In addition to the impaired loans detailed in the tables above, there were approximately $43 million in non-performing loans classified as held for sale at September 30, 2013, compared to $89 million at December 31, 2012. The loans are carried at an amount approximating a price which is expected to be recoverable through the loan sale market. During the three months ended September 30, 2013, approximately $27 million in non-performing loans were transferred to held for sale; this amount is net of charge-offs of $14 million recorded upon transfer. During the nine months ended September 30, 2013, approximately $96 million in non-performing loans were transferred to held for sale; this amount is net of charge-offs of $55 million recorded upon transfer. During the three months ended September 30, 2012, approximately $81 million in non-performing loans were transferred to held for sale; this amount is net of charge-offs of $43 million recorded upon transfer. During the nine months ended September 30, 2012, approximately $251 million in non-performing loans were transferred to held for sale; this amount is net of charge-offs of $135 million recorded upon transfer. At September 30, 2013 and December 31, 2012, non-accrual loans including loans held for sale totaled $1.4 billion and $1.8 billion, respectively.
TROUBLED DEBT RESTRUCTURINGS
The majority of Regions’ commercial and investor real estate TDRs are the result of renewals of classified loans at an interest rate that is not considered to be a market rate of interest. Consumer TDRs generally involve an interest rate concession. Accordingly, the financial impact of the modifications is best illustrated by the impact to the allowance calculation at the loan or pool level as a result of the loans being considered impaired due to their status as a TDR.
None of the modified consumer loans listed in the following TDR disclosures were collateral-dependent at the time of modification. At September 30, 2013, approximately $93 million in residential first mortgage TDRs were in excess of 180 days past due and were considered collateral-dependent. At September 30, 2013, approximately $10 million in home equity first lien TDRs were in excess of 180 days past due and $7 million in home equity second lien TDRs were in excess of 120 days past due, both of which were considered collateral-dependent.
Further discussion related to TDRs, including their impact on the allowance for loan losses, and designation of TDRs in periods subsequent to the modification is included in the Annual Report on Form 10-K for the year ended December 31, 2012.
The following tables present loans modified in a TDR by portfolio segment and class, and the financial impact of those modifications, for the periods presented. The tables include modifications made to new TDRs, as well as renewals of existing TDRs. Total commercial and investor real estate loans reported as new TDRs totaled approximately $131 million and $267 million for the three months ended September 30, 2013 and 2012, respectively. Total commercial and investor real estate loans reported as new TDRs totaled approximately $475 million and $975 million for the nine months ended September 30, 2013 and 2012, respectively.
		Three Months Ended September 30, 2013
								Financial Impact
								of Modifications
								Considered TDRs
		Number of		Recorded				Increase in
		Obligors		Investment				Allowance at
								Modification
				(Dollars in millions)
Commercial and industrial		109		$	135			$	1
Commercial real estate mortgage—owner-occupied		93		78				1
Commercial real estate construction—owner-occupied		2		3				—
Total commercial		204		216				2
Commercial investor real estate mortgage		98		173				1
Commercial investor real estate construction		21		25				—
Total investor real estate		119		198				1
Residential first mortgage		293		47				5
Home equity		172		10				1
Consumer credit card		57		1				—
Indirect and other consumer		76		1				—
Total consumer		598		59				6
		921		$	473			$	9
		Three Months Ended September 30, 2012
									Financial Impact
									of Modifications
									Considered TDRs
		Number of			Recorded				Increase in
		Obligors			Investment				Allowance at
									Modification
					(Dollars in millions)
Commercial and industrial		148			$	223			$	1
Commercial real estate mortgage—owner-occupied		95			91				1
Commercial real estate construction—owner-occupied		—			—				—
Total commercial		243			314				2
Commercial investor real estate mortgage		138			312				2
Commercial investor real estate construction		47			26				—
Total investor real estate		185			338				2
Residential first mortgage		355			75				10
Home equity		222			14				1
Indirect and other consumer		94			1				—
Total consumer		671			90				11
		1,099			$	742			$	15
		Nine Months Ended September 30, 2013
								Financial Impact
								of Modifications
								Considered TDRs
		Number of		Recorded				Increase in
		Obligors		Investment				Allowance at
								Modification
				(Dollars in millions)
Commercial and industrial		335		$	445			$	2
Commercial real estate mortgage—owner-occupied		272		251				3
Commercial real estate construction—owner-occupied		5		30				—
Total commercial		612		726				5
Commercial investor real estate mortgage		321		569				3
Commercial investor real estate construction		64		77				—
Total investor real estate		385		646				3
Residential first mortgage		965		169				19
Home equity		451		29				3
Consumer credit card		202		3				—
Indirect and other consumer		234		3				—
Total consumer		1,852		204				22
		2,849		$	1,576			$	30
		Nine Months Ended September 30, 2012
								Financial Impact
								of Modifications
								Considered TDRs
		Number of		Recorded				Increase in
		Obligors		Investment				Allowance at
								Modification
				(Dollars in millions)
Commercial and industrial		507		$	559			$	3
Commercial real estate mortgage—owner-occupied		331		301				3
Commercial real estate construction—owner-occupied		7		6				—
Total commercial		845		866				6
Commercial investor real estate mortgage		485		1,049				8
Commercial investor real estate construction		176		102				1
Total investor real estate		661		1,151				9
Residential first mortgage		1,123		234				30
Home equity		808		58				4
Indirect and other consumer		396		7				—
Total consumer		2,327		299				34
		3,833		$	2,316			$	49
As described previously, the consumer modifications granted by Regions are rate concessions, and not forgiveness of principal. The majority of the commercial and investor real estate modifications are renewals where there is no reduction in interest rate or forgiveness of principal. Accordingly, Regions most often does not record a charge-off at the modification date. A limited number of 2012 modifications included above were A/B note restructurings, where the B-note was charged off. There were no charge-offs recorded for any loans modified during the three or nine months ended September 30, 2013.
Defaulted TDRs
The following table presents TDRs by portfolio segment and class which defaulted during the three and nine months ended September 30, 2013 and 2012, and which were modified in the previous twelve months (i.e., the twelve months prior to the default). For purposes of this disclosure, default is defined as 90 days past due and still accruing for the consumer portfolio segment, and placement on non-accrual status for the commercial and investor real estate portfolio segments. Consideration of defaults in the calculation of the allowance for loan losses is described in detail in the consolidated financial statements included in the Annual Report on Form 10-K for the year ended December 31, 2012.
		Three Months Ended September 30								Nine Months Ended September 30
		2013				2012				2013				2012
		(In millions)
Defaulted During the Period, Where Modified in a TDR Twelve Months Prior to Default
Commercial and industrial		$	1			$	23			$	29			$	82
Commercial real estate mortgage—owner-occupied		5				13				28				47
Commercial real estate construction—owner-occupied		—				—				—				1
Total commercial		6				36				57				130
Commercial investor real estate mortgage		5				50				60				161
Commercial investor real estate construction		19				2				24				21
Total investor real estate		24				52				84				182
Residential first mortgage		11				15				40				48
Home equity		1				4				4				16
Total consumer		12				19				44				64
		$	42			$	107			$	185			$	376
Commercial and investor real estate loans which were on non-accrual status at the time of the latest modification are not included in the default table above, as they are already considered to be in default at the time of the restructuring. At September 30, 2013, approximately $101 million of commercial and investor real estate loans modified in a TDR during the three months ended September 30, 2013 were on non-accrual status. Approximately 14.9 percent of this amount was 90 days past due.
At September 30, 2013, Regions had restructured binding unfunded commitments totaling $222 million where a concession was granted and the borrower was in financial difficulty.

Servicing_of_Financial_Assets

Servicing of Financial Assets	9 Months Ended
	Sep. 30, 2013
Text Block [Abstract]	'
Loan Servicing	'
	SERVICING OF FINANCIAL ASSETS
	The fair value of mortgage servicing rights is calculated using various assumptions including future cash flows, market discount rates, expected prepayment rates, servicing costs and other factors. A significant change in prepayments of mortgages in the servicing portfolio could result in significant changes in the valuation adjustments, thus creating potential volatility in the carrying amount of mortgage servicing rights. The Company compares fair value estimates and assumptions to observable market data where available, and also considers recent market activity and actual portfolio experience.
	The table below presents an analysis of mortgage servicing rights under the fair value measurement method:
		Three Months Ended September 30						Nine Months Ended September 30
		2013			2012			2013			2012
		(In millions)
	Carrying value, beginning of period	$	276		$	179		$	191		$	182
	Additions	13			16			73			44
	Increase (decrease) in fair value:
	Due to change in valuation inputs or assumptions	—			(11		)	45			(28		)
	Economic amortization associated with borrower repayments	(8		)	(8		)	(28		)	(22		)
	Carrying value, end of period	$	281		$	176		$	281		$	176
	On March 29, 2013, the Company completed a transaction to purchase the rights to service approximately $3 billion in residential mortgage loans. The mortgage servicing rights asset was increased by the purchase price of approximately $28 million in the first quarter of 2013.
	Data and assumptions used in the fair value calculation, as well as the valuation’s sensitivity to rate fluctuations, related to mortgage servicing rights (excluding related derivative instruments) are as follows:
		30-Sep
		2013			2012
		(Dollars in millions)
	Unpaid principal balance	$	28,234		$	26,005
	Weighted-average prepayment speed (CPR; percentage)	9.4		%	20.1		%
	Estimated impact on fair value of a 10% increase	$	(12	)	$	(13	)
	Estimated impact on fair value of a 20% increase	$	(24	)	$	(23	)
	Option-adjusted spread (basis points)	1,014			1,035
	Estimated impact on fair value of a 10% increase	$	(10	)	$	(5	)
	Estimated impact on fair value of a 20% increase	$	(20	)	$	(10	)
	Weighted-average coupon interest rate	4.5		%	5		%
	Weighted-average remaining maturity (months)	279			277
	Weighted-average servicing fee (basis points)	27.7			28.3
	The sensitivity calculations above are hypothetical and should not be considered to be predictive of future performance. Changes in fair value based on adverse changes in assumptions generally cannot be extrapolated because the relationship of the change in assumption to the change in fair value may not be linear. Also, the effect of an adverse variation in a particular assumption on the fair value of the mortgage servicing rights is calculated without changing any other assumption, while in reality changes in one factor may result in changes in another, which may either magnify or counteract the effect of the change. The derivative instruments utilized by Regions would serve to reduce the estimated impacts to fair value included in the table above.
	The following table presents servicing related fees, which includes contractually specified servicing fees, late fees and other ancillary income resulting from the servicing of mortgage loans:
		Three Months Ended September 30						Nine Months Ended September 30
		2013			2012			2013			2012
		(In millions)
	Servicing related fees and other ancillary income	$	22		$	21		$	64		$	63
	Loans are sold in the secondary market with standard representations and warranties regarding certain characteristics such as the quality of the loan, the absence of fraud, the eligibility of the loan for sale and the future servicing associated with the loan. Regions may be required to repurchase these loans at par, or make-whole or indemnify the purchasers for losses incurred when representations and warranties are breached.
	Regions maintains a repurchase liability related to mortgage loans sold with representations and warranty provisions. This repurchase liability is reported in other liabilities on the consolidated balance sheets and reflects management’s estimate of losses based on historical repurchase and loss trends, as well as other factors that may result in anticipated losses different from historical loss trends. Adjustments to this reserve are recorded in other non-interest expense on the consolidated statements of income. The table below presents an analysis of Regions’ repurchase liability related to mortgage loans sold with representations and warranty provisions:
		Three Months Ended September 30						Nine Months Ended September 30
		2013			2012			2013			2012
		(In millions)
	Beginning balance	$	40		$	37		$	40		$	32
	Additions	8			7			23			30
	Losses	(8		)	(6		)	(23		)	(24		)
	Ending balance	$	40		$	38		$	40		$	38
	During the third quarters of 2013 and 2012, settled repurchase claims were related to one or more of the following alleged breaches: 1) underwriting guideline violations; 2) misrepresentation of income, assets or employment; or 3) property valuation not properly supported. These claims stem primarily from the 2006—2008 vintages.

Goodwill

Goodwill	9 Months Ended
	Sep. 30, 2013
Text Block [Abstract]	'
Goodwill	'
	GOODWILL
	Goodwill allocated to each reportable segment is presented as follows:
		30-Sep-13			December 31, 2012
		(In millions)
	Business Services	$	2,552		$	2,552
	Consumer Services	1,797			1,797
	Wealth Management	467			467
		$	4,816		$	4,816
	Regions evaluates each reporting unit’s goodwill for impairment on an annual basis in the fourth quarter, or more often if events or circumstances indicate that there may be impairment. Adverse changes in the economic environment, declining operations, or other factors could result in a decline in the implied fair value of goodwill. A goodwill impairment test includes two steps. Step One, used to identify potential impairment, compares the estimated fair value of a reporting unit with its carrying amount, including goodwill. If the estimated fair value of a reporting unit exceeds its carrying amount, goodwill of the reporting unit is considered not impaired. If the carrying amount of a reporting unit exceeds its estimated fair value, the second step of the goodwill impairment test is performed to measure the amount of impairment loss, if any. Step Two of the goodwill impairment test compares the implied estimated fair value of reporting unit goodwill with the carrying amount of that goodwill. If the carrying amount of goodwill for that reporting unit exceeds the implied fair value of that unit’s goodwill, an impairment loss is recognized in an amount equal to that excess.
	During the third quarter of 2013, Regions assessed the indicators of goodwill impairment for all three reporting units as of July 31, 2013, and through the date of the filing of the Quarterly Report on Form 10-Q for the quarter ended September 30, 2013. The indicators assessed included:
	•	Recent operating performance,
	•	Changes in market capitalization,
	•	Regulatory actions and assessments,
	•	Changes in the business climate (including legislation, legal factors, and competition),
	•	Company-specific factors (including changes in key personnel, asset impairments, and business dispositions), and
	•	Trends in the banking industry.
	While the assessment of these indicators did not indicate impairment, Regions determined that quantitative testing of goodwill was required for all of Regions’ reporting units for the September 30, 2013 interim period due to the size of the shortfall between Regions’ market capitalization and book value. The results of the interim test indicated that the estimated fair value of each reporting unit exceeded its carrying amount as of the test date; therefore, the goodwill of each reporting unit is considered not impaired as of the testing date.
	A detailed description of the Company's methodology and valuation approaches used to determine the estimated fair value of each reporting unit is included in the consolidated financial statements in the Annual Report on Form 10-K for the year ended December 31, 2012.
	Listed in the table below are assumptions used in estimating the fair value of each reporting unit for the September 30, 2013 interim period. The table includes the discount rates used in the income approach, the market multipliers used in the market approaches, and the public company method control premium applied to each reporting unit.
	As of Third Quarter 2013	Business		Consumer			Wealth
		Services		Services			Management
	Discount rate used in income approach	12	%	12	%		12	%
	Public company method market multiplier(1)	1.2	x	1.2	x		16.9	x
	Transaction method market multiplier(2)	1.6	x	1.6	x		24.5	x
	_________
	-1	For the Business Services and Consumer Services reporting units, these multipliers are applied to tangible book value. For the Wealth Management reporting unit, this multiplier is applied to earnings. In addition to the multipliers, a 30 percent control premium was assumed for the Business Services reporting unit, a 40 percent control premium was assumed for the Consumer Services reporting unit and a 30 percent control premium was assumed for the Wealth Management reporting unit based on current market factors. Because the control premium considers potential revenue synergies and cost savings for similar financial services transactions, reporting units operating in businesses that have greater barriers to entry tend to have greater control premiums.
	-2	For the Business Services and Consumer Services reporting units, these multipliers are applied to tangible book value. For the Wealth Management reporting unit, this multiplier is applied to earnings.
	As of Fourth Quarter 2012	Business		Consumer			Wealth
		Services		Services			Management
	Discount rate used in income approach	14	%	13	%		13	%
	Public company method market multiplier(1)	1.2	x	1	x		14	x
	Transaction method market multiplier(2)	1.3	x	1.3	x		25.2	x
	_________
	-1	For the Business Services and Consumer Services reporting units, these multipliers are applied to tangible book value. For the Wealth Management reporting unit, this multiplier is applied to earnings. In addition to the multipliers, a 20 percent control premium was assumed for the Business Services reporting unit, a 40 percent control premium was assumed for the Consumer Services reporting unit and a 30 percent control premium was assumed for the Wealth Management reporting unit based on current market factors. Because the control premium considers potential revenue synergies and cost savings for similar financial services transactions, reporting units operating in businesses that have greater barriers to entry tend to have greater control premiums.
	-2	For the Business Services and Consumer Services reporting units, these multipliers are applied to tangible book value. For the Wealth Management reporting unit, this multiplier is applied to earnings.

ShortTerm_Borrowings

Short-Term Borrowings	9 Months Ended
	Sep. 30, 2013
Debt Disclosure [Abstract]	'
Short-Term Borrowings-Offsetting	'
	SHORT-TERM BORROWINGS
	OFFSETTING
	Regions has certain securities sold under agreements to repurchase from time to time that are subject to enforceable master netting agreements which include full rights of setoff. There were no such securities sold under agreements to repurchase that were subject to enforceable master netting agreements outstanding at either September 30, 2013 or December 31, 2012.
	Regions also has enforceable master netting agreements with certain derivative counterparties. Refer to Note 12 for additional information.

Stockholders_Equity_and_Accumu

Stockholders' Equity and Accumulated Other Comprehensive Income (Loss)	9 Months Ended
	Sep. 30, 2013
Text Block [Abstract]	'
Stockholders' Equity and Accumulated Other Comprehensive Income (Loss)	'
	STOCKHOLDERS’ EQUITY AND ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)
	On November 1, 2012, Regions issued 20 million depositary shares each representing a 1/40th ownership interest in a share of the Company’s 6.375% Non-Cumulative Perpetual Preferred Stock, Series A, par value $1.00 per share (“Series A Preferred stock”), with a liquidation preference of $1,000 per share of Series A Preferred Stock (equivalent to $25 per depositary share). The issuance generated proceeds of approximately $486 million, net of issuance costs. The Board of Directors declared $8 million in cash dividends on this Series A Preferred Stock during each of the first three quarters of 2013. Because the Company was in a retained deficit position, the preferred dividends are recorded as a reduction of preferred stock, including related surplus.
	On March 19, 2012, the Company issued 153 million shares of common stock at $5.90 per share, generating proceeds of approximately $875 million, net of issuance costs.
	On November 14, 2008, Regions completed the sale of 3.5 million shares of its Fixed Rate Cumulative Perpetual Preferred Stock, Series A, to the U.S. Treasury as part of the Capital Purchase Program (“CPP”). As part of its purchase of the preferred securities, the U.S. Treasury also received a warrant to purchase 48.3 million shares of Regions’ common stock. On April 4, 2012, Regions repurchased all 3.5 million shares of the Series A preferred stock issued to the U.S. Treasury Department under the CPP and in early May of 2012, Regions repurchased the warrant from the U.S. Treasury Department for $45 million. The transaction reduced additional paid-in capital within stockholders’ equity by $45 million. The warrant repurchase did not impact results of operations.
	At December 31, 2012, Regions had 23 million common shares available for repurchase through open market transactions under an existing share repurchase authorization. On March 19, 2013, Regions' Board of Directors authorized a new $350 million common stock purchase plan, permitting repurchases from the beginning of the second quarter of 2013 through the end of the first quarter of 2014. The new plan replaced the prior share repurchase authorization. As of September 30, 2013, Regions had repurchased approximately 36 million shares of common stock at a total cost of approximately $340 million. The total cost paid to repurchase common shares includes the full amount paid as part of a contractual repurchase agreement. These shares were immediately retired upon repurchase and therefore are not included in treasury stock.
	The Board of Directors declared a $0.03 per share cash dividend on common stock for the second and third quarters of 2013 and a $0.01 per share cash dividend for first quarter of 2013, totaling $0.07 per share cash dividend for the first nine months of 2013. The Board of Directors declared a $0.01 per share cash dividend on common stock for the first, second, and third quarters of 2012.
	Activity within the balances in accumulated other comprehensive income (loss) is shown in the following tables for the three and nine months ended September 30, 2013 and 2012.
		Three Months Ended September 30, 2013
		Unrealized losses on securities transferred to held to maturity			Unrealized			Unrealized			Defined			Accumulated
					gains (losses) on			gains (losses) on			benefit			other
					securities			derivative			pension			comprehensive
					available			instruments			plans and			income (loss),
					for			designated			other post			net of tax
					sale			as cash			employment
								flow hedges			benefits
		(In millions)
	Beginning of period	$	(68	)	$	—		$	35		$	(445	)	$	(478	)
	Net change	2			41			12			12			67
	End of period	$	(66	)	$	41		$	47		$	(433	)	$	(411	)
		Three Months Ended September 30, 2012
		Unrealized			Unrealized			Defined			Accumulated
		gains (losses) on			gains (losses) on			benefit			other
		securities			derivative			pension			comprehensive
		available			instruments			plans and			income (loss),
		for			designated			other post			net of tax
		sale			as cash			employment
					flow hedges			benefits
		(In millions)
	Beginning of period	$	394		$	110		$	(450	)	$	54
	Net change	143			(6		)	11			148
	End of period	$	537		$	104		$	(439	)	$	202
		Nine Months Ended September 30, 2013
		Unrealized losses on securities transferred to held to maturity			Unrealized			Unrealized			Defined			Accumulated
					gains (losses) on			gains (losses) on			benefit			other
					securities			derivative			pension			comprehensive
					available			instruments			plans and			income (loss),
					for			designated			other post			net of tax
					sale			as cash			employment
								flow hedges			benefits
		(In millions)
	Beginning of period	$	—		$	436		$	93		$	(464	)	$	65
	Net change	(66		)	(395		)	(46		)	31			(476		)
	End of period	$	(66	)	$	41		$	47		$	(433	)	$	(411	)
		Nine Months Ended September 30, 2012
		Unrealized			Unrealized			Defined			Accumulated
		gains (losses) on			gains (losses) on			benefit			other
		securities			derivative			pension			comprehensive
		available			instruments			plans and			income (loss),
		for			designated			other post			net of tax
		sale			as cash			employment
					flow hedges			benefits
		(In millions)
	Beginning of period	$	322		$	84		$	(475	)	$	(69	)
	Net change	215			20			36			271
	End of period	$	537		$	104		$	(439	)	$	202
	The following table presents amounts reclassified out of accumulated other comprehensive income (loss) for the three and nine months ended September 30, 2013:
		Three Months Ended September 30, 2013			Nine Months Ended September 30, 2013
	Details about Accumulated Other Comprehensive Income (Loss) Components	Amount Reclassified from Accumulated Other Comprehensive Income (Loss)(1)			Amount Reclassified from Accumulated Other Comprehensive Income (Loss)(1)			Affected Line Item in the Consolidated Statements of Income
		(In millions)
	Unrealized losses on securities transferred to held to maturity:
		$	(4	)	$	(4	)	Net interest income
		2			2			Tax (expense) or benefit
		$	(2	)	$	(2	)	Net of tax
Unrealized gains and losses on available-for-sale securities:
	$	3		$	26		Securities gains, net
	(1		)	(9		)	Tax (expense) or benefit
	$	2		$	17		Net of tax
Gains and losses on cash flow hedges:
Interest rate contracts	$	26		$	58		Net interest income
	(10		)	(22		)	Tax (expense) or benefit
	$	16		$	36		Net of tax
Amortization of defined benefit pension items:
Prior-service cost	$	—		$	—		(2)
Actuarial gains/(losses)	(19		)	(52		)	(2)
	(19		)	(52		)	Total before tax
	7			19			Tax (expense) or benefit
	$	(12	)	$	(33	)	Net of tax
Total reclassifications for the period	$	4		$	18		Net of tax
_________
(1) Amounts in parentheses indicate reductions to net income.
(2) These accumulated other comprehensive income (loss) components are included in the computation of net periodic pension cost and are included in salaries and employee benefits on the consolidated statements of income (see Note 11 for additional details).

Earnings_Loss_per_Common_Share

Earnings (Loss) per Common Share	9 Months Ended
	Sep. 30, 2013
Text Block [Abstract]	'
Earnings (Loss) per Common Share	'
	EARNINGS (LOSS) PER COMMON SHARE
	The following table sets forth the computation of basic earnings (loss) per common share and diluted earnings (loss) per common share:
		Three Months Ended September 30						Nine Months Ended September 30
		2013			2012			2013			2012
		(In millions, except per share amounts)
	Numerator:
	Income from continuing operations	$	293		$	312		$	894		$	902
	Preferred stock dividends and accretion	(8		)	—			(24		)	(125		)
	Income from continuing operations available to common shareholders	285			312			870			777
	Income (loss) from discontinued operations, net of tax	—			(11		)	1			(47		)
	Net income available to common shareholders	$	285		$	301		$	871		$	730
	Denominator:
	Weighted-average common shares outstanding—basic	1,388			1,414			1,401			1,370
	Potential common shares	17			9			14			5
	Weighted-average common shares outstanding—diluted	1,405			1,423			1,415			1,375
	Earnings per common share from continuing operations(1):
	Basic	$	0.21		$	0.22		$	0.62		$	0.57
	Diluted	0.2			0.22			0.61			0.57
	Earnings (loss) per common share from discontinued operations(1):
	Basic	(0.00		)	(0.01		)	0			(0.04		)
	Diluted	(0.00		)	(0.01		)	0			(0.04		)
	Earnings per common share(1):
	Basic	0.21			0.21			0.62			0.53
	Diluted	0.2			0.21			0.62			0.53
	________
	-1	Certain per share amounts may not appear to reconcile due to rounding.
	For earnings (loss) per common share from discontinued operations, basic and diluted weighted-average common shares outstanding are the same for the three months ended September 30, 2013 and the three and nine months ended September 30, 2012 due to the net loss.
	The effect from the assumed exercise of 24 million and 25 million stock options for the three and nine months ended September 30, 2013, respectively, was not included in the above computations of diluted earnings per common share because such amounts would have had an antidilutive effect on earnings per common share. The effect from the assumed exercise of 32 million and 37 million stock options for the three and nine months ended September 30, 2012, respectively, was not included in the above computations of diluted earnings per share because such amounts would have had an antidilutive effect on earnings per share.

ShareBased_Payments

Share-Based Payments	9 Months Ended
	Sep. 30, 2013
Text Block [Abstract]	'
Share-Based Payments	'
	SHARE-BASED PAYMENTS
	Regions has long-term incentive compensation plans that permit the granting of incentive awards in the form of stock options, restricted stock, restricted stock awards and units, performance awards and/or stock appreciation rights. While Regions has the ability to issue stock appreciation rights, none have been issued to date. The terms of all awards issued under these plans are determined by the Compensation Committee of the Board of Directors; however, no awards may be granted after the tenth anniversary from the date the plans were initially approved by shareholders. Incentive awards usually vest based on employee service, generally within three years from the date of the grant. The contractual lives of options granted under these plans are typically ten years from the date of the grant.
	On May 13, 2010, the shareholders of the Company approved the Regions Financial Corporation 2010 Long-Term Incentive Plan (“2010 LTIP”), which permits the Company to grant to employees and directors various forms of incentive compensation. These forms of incentive compensation are similar to the types of compensation approved in prior plans. The 2010 LTIP authorizes 100 million common share equivalents available for grant, where grants of options count as one share equivalent and grants of full value awards (e.g., shares of restricted stock, restricted stock units and performance stock units) count as 2.25 share equivalents. Unless otherwise determined by the Compensation Committee of the Board of Directors, grants of restricted stock, restricted stock units, and performance stock units accrue dividends as they are declared by the Board of Directors, and the dividends are paid upon vesting of the award. The 2010 LTIP closed all prior long-term incentive plans to new grants, and, accordingly, prospective grants must be made under the 2010 LTIP or a successor plan. All existing grants under prior long-term incentive plans were unaffected by adoption of the 2010 LTIP. The number of remaining share equivalents available for future issuance under the 2010 LTIP was approximately 53 million at September 30, 2013.
	STOCK OPTIONS
	No stock option grants were made during the first nine months of 2013 or 2012. The following table summarizes the activity related to stock options during the first nine months of 2013 and 2012:
		Nine Months Ended September 30
		2013				2012
		Number of		Weighted-Average		Number of		Weighted-Average
		Options		Exercise		Options		Exercise
				Price				Price
	Outstanding at beginning of period	38,258,204		$	23.09	46,351,349		$	23.62
	Granted	—		—		—		—
	Exercised	(810,936	)	5.22		(338,182	)	4.07
	Canceled/Forfeited	(3,699,256	)	25.91		(5,911,118	)	25.6
	Outstanding at end of period	33,748,012		$	23.21	40,102,049		$	23.49
	Exercisable at end of period	33,277,791		$	23.45	37,108,726		$	24.83
	RESTRICTED STOCK AWARDS AND PERFORMANCE STOCK AWARDS
	During the first nine months of 2013 and 2012, Regions made restricted stock grants that vest upon service conditions and restricted stock unit and performance stock unit grants that vest based upon service conditions and performance conditions. Dividend payments during the vesting period are deferred to the end of the vesting term. The fair value of these restricted shares, restricted stock units and performance stock units was estimated based upon the fair value of the underlying shares on the date of the grant. The valuation was not adjusted for the deferral of dividends.
	The following table summarizes the activity related to restricted and performance stock awards and units:
		Nine Months Ended September 30
		2013				2012
		Number of		Weighted-Average		Number of		Weighted-Average
		Shares		Grant Date Fair		Shares		Grant Date Fair
				Value				Value
	Non-vested at beginning of period	11,945,179		$	6.15	6,280,360		$	7.6
	Granted	6,327,865		8.04		8,426,987		5.86
	Vested	(1,481,659	)	6.75		(1,521,360	)	4.58
	Forfeited	(375,850	)	6.38		(671,288	)	4.15
	Non-vested at end of period	16,415,535		$	6.82	12,514,699		$	6.98

Pension_and_Other_Postretireme

Pension and Other Postretirement Benefits	9 Months Ended
	Sep. 30, 2013
Text Block [Abstract]	'
Pension and Other Postretirement Benefits	'
	PENSION AND OTHER POSTRETIREMENT BENEFITS
	Regions has a qualified defined benefit pension plan (the "pension plan") covering only certain employees as the pension plan is closed to new entrants. The Company also sponsors supplemental executive retirement programs (collectively the "SERP"), which are non-qualified plans that provide certain senior executive officers defined benefits in relation to their compensation.
	Net periodic pension cost, which is recorded in salaries and benefits on the consolidated statements of income, included the following components:
		Qualified Plan						Non-qualified Plans				Total
		Three Months Ended September 30
		2013			2012			2013		2012		2013			2012
		(In millions)
	Service cost	$	9		$	7		$	1	$	1	$	10		$	8
	Interest cost	21			22			2		2		23			24
	Expected return on plan assets	(33		)	(28		)	—		—		(33		)	(28		)
	Amortization of actuarial loss	18			18			1		—		19			18
	Amortization of prior service cost	—			—			—		—		—			—
	Net periodic pension cost	$	15		$	19		$	4	$	3	$	19		$	22
		Qualified Plan						Non-qualified Plans				Total
		Nine Months Ended September 30
		2013			2012			2013		2012		2013			2012
		(In millions)
	Service cost	$	28		$	28		$	3	$	2	$	31		$	30
	Interest cost	63			63			4		5		67			68
	Expected return on plan assets	(99		)	(85		)	—		—		(99		)	(85		)
	Amortization of actuarial loss	50			53			2		—		52			53
	Amortization of prior service cost	—			—			—		1		—			1
	Net periodic pension cost	$	42		$	59		$	9	$	8	$	51		$	67
	Regions' policy for funding the qualified pension plan is to contribute annually at least the minimum amount required by Internal Revenue Service funding standards. Regions made no contribution to the plan during the first nine months of 2013.
	Regions also provides other postretirement benefits such as defined benefit health care plans and life insurance plans that cover certain retired employees. There was no material impact from other postretirement benefits on the consolidated financial statements for the nine month period ended September 30, 2013 or 2012.

Derivative_Financial_Instrumen

Derivative Financial Instruments and Hedging Activities	9 Months Ended
	Sep. 30, 2013
Text Block [Abstract]	'
Derivative Financial Instruments and Hedging Activities	'
	DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES
	The following tables present the notional amount and estimated fair value of derivative instruments on a gross basis as of September 30, 2013 and December 31, 2012. Beginning in the third quarter of 2013, Regions began to include the value of accrued interest in the estimated fair value of derivatives designated as hedging relationships. Prior period amounts have been adjusted to conform to this presentation.
			30-Sep-13										December 31, 2012
			Notional			Estimated Fair Value							Notional				Estimated Fair Value
			Amount			Gain(1)			Loss(1)				Amount				Gain(1)		Loss(1)
			(In millions)
	Derivatives in fair value hedging relationships:
	Interest rate swaps		$	4,238		$	74		$	27			$	5,388			$	113	$	1
	Derivatives in cash flow hedging relationships:
	Interest rate swaps		5,650			20			55				1,000				2		—
	Total derivatives designated as hedging instruments		$	9,888		$	94		$	82			$	6,388			$	115	$	1
	Derivatives not designated as hedging instruments:
	Interest rate swaps		$	45,447		$	1,143		$	1,201			$	46,054			$	1,746	$	1,775
	Interest rate options		3,585			15			3				3,274				25		4
	Interest rate futures and forward commitments		18,267			7			23				43,908				10		13
	Other contracts		2,437			42			41				2,213				31		32
	Total derivatives not designated as hedging instruments		$	69,736		$	1,207		$	1,268			$	95,449			$	1,812	$	1,824
	Total derivatives		$	79,624		$	1,301		$	1,350			$	101,837			$	1,927	$	1,825
	_________
	-1	Derivatives in a gain position are recorded as other assets and derivatives in a loss position are recorded as other liabilities on the consolidated balance sheets.
	HEDGING DERIVATIVES
	Derivatives entered into to manage interest rate risk and facilitate asset/liability management strategies are designated as hedging derivatives. Derivative financial instruments that qualify in a hedging relationship are classified, based on the exposure being hedged, as either fair value hedges or cash flow hedges. The Company formally documents all hedging relationships between hedging instruments and hedged items, as well as its risk management objective and strategy for entering into various hedge transactions. The Company performs periodic assessments to determine whether the hedging relationship has been highly effective in offsetting changes in fair values or cash flows of hedged items and whether the relationship is expected to continue to be highly effective in the future.
	When a hedge is terminated or hedge accounting is discontinued because the hedged item no longer meets the definition of a firm commitment, or because it is probable that the forecasted transaction will not occur by the end of the specified time period, the derivative will continue to be recorded in the consolidated balance sheets at its fair value, with changes in fair value recognized currently in investment fee income. Any asset or liability that was recorded pursuant to recognition of the firm commitment is removed from the consolidated balance sheets and recognized currently in other non-interest expense. Gains and losses that were accumulated in accumulated other comprehensive income (loss) pursuant to the hedge of a forecasted transaction are recognized immediately in other non-interest expense.
	FAIR VALUE HEDGES
	Fair value hedge relationships mitigate exposure to the change in fair value of an asset, liability or firm commitment. Under the fair value hedging model, gains or losses attributable to the change in fair value of the derivative instrument, as well as the gains and losses attributable to the change in fair value of the hedged item, are recognized in earnings in the period in which the change in fair value occurs. The corresponding adjustment to the hedged asset or liability is included in the basis of the hedged item, while the corresponding change in the fair value of the derivative instrument is recorded as an adjustment to other assets or other liabilities, as applicable. Hedge ineffectiveness exists to the extent that the changes in fair value of the derivative do not offset the changes in fair value of the hedged item and is recorded as other non-interest expense.
	Regions enters into interest rate swap agreements to manage interest rate exposure on the Company’s fixed-rate borrowings, which includes long-term debt and certificates of deposit. These agreements involve the receipt of fixed-rate amounts in exchange for floating-rate interest payments over the life of the agreements. Regions enters into interest rate swap agreements to manage interest rate exposure on certain of the Company's fixed-rate available for sale securities. These agreements involve the payment of fixed-rate amounts in exchange for floating-rate interest receipts. Regions also enters into forward sale commitments to hedge changes in the fair value of available-for-sale securities.
	CASH FLOW HEDGES
	Cash flow hedge relationships mitigate exposure to the variability of future cash flows or other forecasted transactions. For cash flow hedge relationships, the effective portion of the gain or loss related to the derivative instrument is recognized as a component of accumulated other comprehensive income (loss). Ineffectiveness is measured by comparing the change in fair value of the respective derivative instrument and the change in fair value of a “perfectly effective” hypothetical derivative instrument. Ineffectiveness will be recognized in earnings only if it results from an overhedge. The ineffective portion of the gain or loss related to the derivative instrument, if any, is recognized in earnings as other non-interest expense during the period of change. Amounts recorded in accumulated other comprehensive income (loss) are recognized in earnings in the periods during which the hedged item impacts earnings.
	Regions enters into interest rate swap agreements to manage overall cash flow changes related to interest rate risk exposure on LIBOR-based loans. The agreements effectively modify the Company’s exposure to interest rate risk by utilizing receive fixed/pay LIBOR interest rate swaps.
	Regions issues long-term fixed-rate debt for various funding needs. Regions may enter into receive LIBOR/pay fixed forward starting swaps to hedge risks of changes in the projected quarterly interest payments attributable to changes in the benchmark interest rate ("LIBOR") during the time leading up to the probable issuance date of the new long-term fixed-rate debt.
	Regions purchases Eurodollar futures to hedge the variability in future cash flows based on forecasted resets of one-month LIBOR-based floating-rate loans due to changes in the benchmark interest rate.
	Regions enters into interest rate option contracts to protect cash flows through the maturity date of the hedging instrument on designated one-month LIBOR floating-rate loans from adverse extreme market interest rate changes.
	Regions recognized an unrealized after-tax gain of $70 million and $101 million in accumulated other comprehensive income (loss) at September 30, 2013 and 2012, respectively, related to terminated cash flow hedges of loan and debt instruments which will be amortized into earnings in conjunction with the recognition of interest payments through 2017. Regions recognized pre-tax income of $12 million and $15 million during the three months ended September 30, 2013 and 2012, respectively and pre-tax income of $35 million and $14 million during the nine months ended September 30, 2013 and 2012, respectively related to the amortization of cash flow hedges of loan and debt instruments.
	Regions expects to reclassify out of accumulated other comprehensive income (loss) and into earnings approximately $107 million in pre-tax income due to the receipt or payment of interest payments on all cash flow hedges within the next twelve months. Included in this amount is $49 million in pre-tax net gains related to the amortization of discontinued cash flow hedges. The maximum length of time over which Regions is hedging its exposure to the variability in future cash flows for forecasted transactions is approximately seven years as of September 30, 2013.
	The following tables present the effect of derivative instruments on the consolidated statements of income:
			Gain or (Loss) Recognized in Income on Derivatives						Location of Amounts Recognized in Income on Derivatives and Related Hedged Item		Gain or (Loss) Recognized in Income on Related Hedged Item
			Three Months Ended September 30								Three Months Ended September 30
			2013			2012					2013				2012
			(In millions)								(In millions)
	Fair Value Hedges:
	Interest rate swaps on:
	Debt/CDs		$	11		$	23		Interest expense		$	1			$	3
	Debt/CDs		7			(5		)	Other non-interest expense		(6		)		1
	Securities available for sale		(1		)	—			Interest expense		—				—
	Securities available for sale		2			—			Other non-interest expense		(2		)		—
	Total		$	19		$	18				$	(7	)		$	4
			Effective Portion(3)
			Gain or (Loss) Recognized in AOCI(1)						Location of Amounts Reclassified from AOCI into Income		(Gain) or Loss Reclassified from AOCI into Income(2)
			Three Months Ended September 30								Three Months Ended September 30
			2013			2012					2013				2012
			(In millions)								(In millions)
	Cash Flow Hedges:
	Interest rate swaps		$	10		$	(9	)	Interest income on loans		$	30			$	20
	Forward starting swaps		2			3			Interest expense on debt		(4		)		(4		)
	Total		$	12		$	(6	)			$	26			$	16
			Gain or (Loss) Recognized in Income on Derivatives						Location of Amounts Recognized in Income on Derivatives and Related Hedged Item		Gain or (Loss) Recognized in Income on Related Hedged Item
			Nine Months Ended								Nine Months Ended
			30-Sep								30-Sep
			2013			2012					2013				2012
			(In millions)								(In millions)
	Fair Value Hedges:
	Interest rate swaps on:
	Debt/CDs		$	47		$	81		Interest expense		$	6			$	9
Debt/CDs		(65		)	(25		)	Other non-interest expense		58				19
Securities available for sale		(2		)	—			Interest expense		—				—
Securities available for sale		16			—			Other non-interest expense		(17		)		—
Total		$	(4	)	$	56				$	47			$	28
		Effective Portion(3)
		Gain or (Loss) Recognized in AOCI(1)						Location of Amounts Reclassified from AOCI into Income		(Gain) or Loss Reclassified from AOCI into Income(2)
		Nine Months Ended								Nine Months Ended
		30-Sep								30-Sep
		2013			2012					2013				2012
		(In millions)								(In millions)
Cash Flow Hedges:
Interest rate swaps		$	(53	)	$	13		Interest income on loans		$	70			$	61
Forward starting swaps		7			7			Interest expense on debt		(12		)		(11		)
Total		$	(46	)	$	20				$	58			$	50
____
(1) After-tax
(2) Pre-tax
(3) All cash flow hedges were highly effective for all periods presented, and the change in fair value attributed to hedge ineffectiveness was not material.
DERIVATIVES NOT DESIGNATED AS HEDGING INSTRUMENTS
The Company maintains a derivatives trading portfolio of interest rate swaps, option contracts, and futures and forward commitments used to meet the needs of its customers. The portfolio is used to generate trading profit and to help clients manage market risk. The Company is subject to the credit risk that a counterparty will fail to perform. The Company is also subject to market risk, which is evaluated by the Company and monitored by the asset/liability management process. Separate derivative contracts are entered into to reduce overall market exposure to pre-defined limits. The contracts in this portfolio do not qualify for hedge accounting and are marked-to-market through earnings and included in other assets and other liabilities.
Regions enters into interest rate lock commitments, which are commitments to originate mortgage loans whereby the interest rate on the loan is determined prior to funding and the customers have locked into that interest rate. At September 30, 2013 and December 31, 2012, Regions had $387 million and $775 million, respectively, in total notional amount of interest rate lock commitments. Regions manages market risk on interest rate lock commitments and mortgage loans held for sale with corresponding forward sale commitments, which are recorded at fair value with changes in fair value recorded in mortgage income. At September 30, 2013 and December 31, 2012, Regions had $895 million and $1.9 billion, respectively, in total notional amount related to these forward sale commitments.
Regions has elected to account for mortgage servicing rights at fair market value with any changes to fair value being recorded within mortgage income. Concurrent with the election to use the fair value measurement method, Regions began using various derivative instruments, in the form of forward rate commitments, futures contracts, swaps and swaptions to mitigate the consolidated statement of income effect of changes in the fair value of its mortgage servicing rights. As of September 30, 2013 and December 31, 2012, the total notional amount related to these contracts was $3.2 billion and $4.7 billion, respectively.
The following table presents the location and amount of gain or (loss) recognized in income on derivatives not designated as hedging instruments in the consolidated statements of income for the three and nine months ended September 30, 2013 and 2012, respectively:
		Three Months Ended September 30						Nine Months Ended September 30
Derivatives Not Designated as Hedging Instruments		2013			2012			2013				2012
		(In millions)
Capital markets fee income (1):
Interest rate swaps		$	5		$	10		$	17			$	21
Interest rate options		—			—			2				(1		)
Interest rate futures and forward commitments		—			—			1				(1		)
Other contracts		1			2			10				7
Total capital markets fee income		6			12			30				26
Mortgage income:
Interest rate swaps		1			10			(26		)		29
Interest rate options		9			10			(10		)		27
Interest rate futures and forward commitments		(59		)	(7		)	(28		)		6
Total mortgage income		(49		)	13			(64		)		62
		$	(43	)	$	25		$	(34	)		$	88
____
(1) Capital markets fee income is included in Other income on the consolidated statements of income.
Credit risk, defined as all positive exposures not collateralized with cash or other assets, at September 30, 2013 and December 31, 2012, totaled approximately $518 million and $713 million, respectively. This amount represents the net credit risk on all trading and other derivative positions held by Regions.
CREDIT DERIVATIVES
Regions has both bought and sold credit protection in the form of participations on interest rate swaps (swap participations). These swap participations, which meet the definition of credit derivatives, were entered into in the ordinary course of business to serve the credit needs of customers. Credit derivatives, whereby Regions has purchased credit protection, entitle Regions to receive a payment from the counterparty when the customer fails to make payment on any amounts due to Regions upon early termination of the swap transaction and have maturities between 2013 and 2018. Credit derivatives whereby Regions has sold credit protection have maturities between 2014 and 2020. For contracts where Regions sold credit protection, Regions would be required to make payment to the counterparty when the customer fails to make payment on any amounts due to the counterparty upon early termination of the swap transaction. Regions bases the current status of the prepayment/performance risk on bought and sold credit derivatives on recently issued internal risk ratings consistent with the risk management practices of unfunded commitments.
Regions’ maximum potential amount of future payments under these contracts as of September 30, 2013 was approximately $41 million. This scenario would only occur if variable interest rates were at zero percent and all counterparties defaulted with zero recovery. The fair value of sold protection at September 30, 2013 and 2012 was immaterial. In transactions where Regions has sold credit protection, recourse to collateral associated with the original swap transaction is available to offset some or all of Regions’ obligation.
CONTINGENT FEATURES
Certain of Regions’ derivative instrument contracts with broker-dealers contain provisions allowing those broker-dealers to terminate the contracts in the event that Regions’ and/or Regions Bank’s credit ratings falls below specified ratings from certain major credit rating agencies. During the fourth quarter of 2010, Regions and Regions Bank experienced ratings downgrades from major credit rating agencies such that certain ratings for Regions and Regions Bank were below investment grade. As a result of these ratings downgrades, certain of Regions Bank's broker-dealer counterparties could have terminated these contracts at their discretion. In lieu of terminating these contracts, Regions Bank and certain of its broker-dealer counterparties amended the contracts such that Regions Bank was required to post additional collateral in the cumulative amount of $195 million as of December 31, 2010. As of September 30, 2013, the additional collateral posted was $62 million. During 2012, both Moody’s Investor Service ("Moody's) and Standard and Poor's ("S&P") upgraded certain credit ratings for both Regions and Regions Bank. Beginning in 2013, as a result of the ratings upgrades that occurred during 2012, some of this additional collateral has begun to be returned to Regions.
Some of these contracts with broker-dealers still contain credit-related termination provisions and/or credit-related provisions regarding the posting of collateral. At September 30, 2013, the net fair value of such contracts containing credit-related termination provisions that were in a liability position was $322 million, for which Regions had posted collateral of $365 million. At September 30, 2013, the net fair value of contracts that do not contain credit-related termination provisions that were in a liability position was $215 million, for which Regions had posted collateral of $236 million. Other derivative contracts with broker-dealers do not contain any credit-related provisions. These counterparties require complete overnight collateralization.
The aggregate fair value of all derivative instruments with any credit-risk-related contingent features that were in a liability position on September 30, 2013 and December 31, 2012, was $396 million and $499 million, respectively, for which Regions had posted collateral of $438 million and $641 million, respectively, in the normal course of business.
OFFSETTING
Regions engages in derivatives transactions with dealers and customers. These derivatives transactions are subject to enforceable master netting agreements, which include a right of setoff by the non-defaulting or non-affected party upon early termination of the derivatives transaction. The following table presents the Company's gross derivative positions, including collateral posted or received, as of September 30, 2013 and December 31, 2012. Beginning in the third quarter of 2013, Regions began including the total fair value of all derivatives in the following table and separately reporting amounts subject to and not subject to offsetting. Prior period amounts have been adjusted to conform to this presentation.
		Offsetting Derivative Assets						Offsetting Derivative Liabilities
		30-Sep-13			December 31, 2012			30-Sep-13				December 31, 2012
		(In millions)
Gross amounts subject to offsetting		$	1,245		$	1,900		$	1,318			$	1,820
Gross amounts not subject to offsetting		56			27			32				5
Gross amounts recognized		1,301			1,927			1,350				1,825
Gross amounts offset in the consolidated balance sheets(1)		793			1,095			1,285				1,095
Net amounts presented in the consolidated balance sheets		508			832			65				730
Gross amounts not offset in the consolidated balance sheets:
Financial instruments		10			11			—				—
Cash collateral received/posted(1)		—			88			47				678
Net amounts		$	498		$	733		$	18			$	52
_________
-1	Cash collateral totals are for netting counterparties only. In 2013, Regions began netting cash collateral received and posted against the net derivative asset or liability. At September 30, 2013, gross amounts of derivative assets and liabilities offset in the consolidated balance sheets presented above include cash collateral received of $52 million and cash collateral posted of $544 million, respectively. The cash collateral posted does not include the additional collateral posted in the form of an independent amount of $62 million. At December 31, 2012, cash collateral received and posted was not offset in the consolidated balance sheets. At December 31, 2012, the gross amounts of derivative assets and liabilities not offset in the consolidated balance sheets presented above include cash collateral received of $55 million and cash collateral posted of $827 million, respectively. The cash collateral posted includes the additional collateral posted in the form of an independent amount of $185 million.
Gross amounts of derivatives not subject to offsetting are primarily comprised of derivatives cleared through central clearing houses and interest rate lock commitments to originate mortgage loans. Regions does not have a legal opinion as to whether the clearing house contracts are master netting agreements, and therefore has not offset them on its balance sheet.
Regions also has enforceable master netting agreements associated with certain securities sold under agreements to repurchase. Refer to Note 7 for additional information regarding the offsetting of those financial instruments.

Fair_Value_Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2013
Text Block [Abstract]	'
Fair Value Measurements	'
	FAIR VALUE MEASUREMENTS
	Fair value guidance establishes a framework for using fair value to measure assets and liabilities and defines fair value as the price that would be received to sell an asset or paid to transfer a liability (an exit price) as opposed to the price that would be paid to acquire the asset or received to assume the liability (an entry price). A fair value measure should reflect the assumptions that market participants would use in pricing the asset or liability, including the assumptions about the risk inherent in a particular valuation technique, the effect of a restriction on the sale or use of an asset and the risk of nonperformance. Required disclosures include stratification of balance sheet amounts measured at fair value based on inputs the Company uses to derive fair value measurements. These strata include:
	•	Level 1 valuations, where the valuation is based on quoted market prices for identical assets or liabilities traded in active markets (which include exchanges and over-the-counter markets with sufficient volume),
	•	Level 2 valuations, where the valuation is based on quoted market prices for similar instruments traded in active markets, quoted prices for identical or similar instruments in markets that are not active and model-based valuation techniques for which all significant assumptions are observable in the market, and
	•	Level 3 valuations, where the valuation is generated from model-based techniques that use significant assumptions not observable in the market, but observable based on Company-specific data. These unobservable assumptions reflect the Company’s own estimates for assumptions that market participants would use in pricing the asset or liability. Valuation techniques typically include option pricing models, discounted cash flow models and similar techniques, but may also include the use of market prices of assets or liabilities that are not directly comparable to the subject asset or liability.
	See Note 1 “Summary of Significant Accounting Policies” to the consolidated financial statements of the 2012 Annual Report on Form 10-K for a description of valuation methodologies for assets and liabilities measured at fair value on a recurring and non-recurring basis. Regions rarely transfers assets and liabilities measured at fair value between Level 1 and Level 2 measurements. There were no such transfers during the nine month periods ended September 30, 2013 and 2012. Trading account securities and securities available for sale may be periodically transferred to or from Level 3 valuation based on management’s conclusion regarding the best method of pricing for an individual security. Such transfers are accounted for as if they occur at the beginning of a reporting period.
	The following tables present assets and liabilities measured at estimated fair value on a recurring basis and non-recurring basis as of September 30, 2013 and December 31, 2012. Beginning in the third quarter of 2013, Regions began to include the value of accrued interest in the estimated fair value of derivatives designated as hedging relationships. Prior period amounts have been adjusted to conform to this presentation.
		30-Sep-13														December 31, 2012
		Level 1			Level 2				Level 3			Total				Level 1				Level 2		Level 3			Total
												Estimated Fair Value													Estimated Fair Value
		(In millions)
	Recurring fair value measurements
	Trading account securities	$	119		$	—			$	—		$	119			$	116			$	—	$	—		$	116
	Securities available for sale:
	U.S. Treasury securities	$	52		$	—			$	—		$	52			$	52			$	—	$	—		$	52
	Federal agency securities	—			99				—			99				—				553		—			553
	Obligations of states and political subdivisions	—			5				—			5				—				9		—			9
	Mortgage-backed securities:
	Residential agency	—			15,905				—			15,905				—				21,277		—			21,277
	Residential non-agency	—			—				10			10				—				—		13			13
	Commercial agency	—			855				—			855				—				725		—			725
	Commercial non-agency	—			1,193				—			1,193				—				1,098		—			1,098
	Other debt securities	—			2,812				2			2,814				—				2,833		2			2,835
	Equity securities(1)	135			—				—			135				125				—		—			125
	Total securities available for sale	$	187		$	20,869			$	12		$	21,068			$	177			$	26,495	$	15		$	26,687
	Mortgage loans held for sale	$	—		$	611			$	—		$	611			$	—			$	1,282	$	—		$	1,282
	Mortgage servicing rights	$	—		$	—			$	281		$	281			$	—			$	—	$	191		$	191
	Derivative assets:
	Interest rate swaps	$	—		$	1,237			$	—		$	1,237			$	—			$	1,861	$	—		$	1,861
	Interest rate options	—			3				12			15				—				3		22			25
	Interest rate futures and forward commitments	—			7				—			7				—				10		—			10
	Other contracts	—			42				—			42				—				31		—			31
	Total derivative assets	$	—		$	1,289			$	12		$	1,301			$	—			$	1,905	$	22		$	1,927
	Derivative liabilities:
	Interest rate swaps	$	—		$	1,283			$	—		$	1,283			$	—			$	1,776	$	—		$	1,776
	Interest rate options	—			3				—			3				—				4		—			4
	Interest rate futures and forward commitments	—			23				—			23				—				13		—			13
	Other contracts	—			41				—			41				—				32		—			32
	Total derivative liabilities	$	—		$	1,350			$	—		$	1,350			$	—			$	1,825	$	—		$	1,825
	Nonrecurring fair value measurements
	Loans held for sale	$	—		$	—			$	29		$	29			$	—			$	—	$	51		$	51
	Foreclosed property and other real estate	—			60				21			81				—				41		40			81
	_________
	(1) Excludes Federal Reserve Bank and Federal Home Loan Bank Stock totaling $495 million and $67 million at September 30, 2013 and $484 million and $73 million at December 31, 2012, respectively.
	Assets and liabilities in all levels could result in volatile and material price fluctuations. Realized and unrealized gains and losses on Level 3 assets represent only a portion of the risk to market fluctuations in Regions’ consolidated balance sheets. Further, derivatives included in Levels 2 and 3 are used by the Asset and Liability Management Committee of the Company in a holistic approach to managing price fluctuation risks.
	The following tables illustrate a rollforward for all assets and liabilities measured at fair value on a recurring basis using significant unobservable inputs (Level 3) for the three and nine months ended September 30, 2013 and 2012, respectively. The tables do not reflect the change in fair value attributable to any related economic hedges the Company used to mitigate the interest rate risk associated with these assets and liabilities. The net changes in realized gains (losses) included in earnings related to Level 3 assets and liabilities held at September 30, 2013 and 2012 are not material.
		Three Months Ended September 30, 2013
					Total Realized /
					Unrealized
					Gains or Losses
		Opening Balance July 1, 2013			Included			Included			Purchases		Sales		Issuances			Settlements			Transfers	Transfers		Closing
					in			in Other													into	out of		Balance
					Earnings			Compre-													Level 3	Level 3		September 30,
								hensive																2013
								Income
								(Loss)
		(In millions)
	Level 3 Instruments Only
	Securities available for sale:
	Residential non-agency MBS	$	11		—			—			—		—		—			(1	)		—	—		$	10
	Other debt securities	2			—			—			—		—		—			—			—	—		2
	Total securities available for sale	$	13		—			—			—		—		—			(1	)		—	—		$	12
	Mortgage servicing rights	$	276		(9	)	(a)	—			14		—		—			—			—	—		$	281
Total interest rate options derivatives, net	$	2		24		(a)	—			—		—		—			(14	)		—	—		$	12
_________
(a)	Included in mortgage income.
	Three Months Ended September 30, 2012
				Total Realized /
				Unrealized
				Gains or Losses
	Opening Balance July 1, 2012			Included			Included			Purchases		Sales		Issuances			Settlements			Transfers	Transfers		Closing
				in			in Other													into	out of		Balance
				Earnings			Compre-													Level 3	Level 3		September 30,
							hensive																2012
							Income
							(Loss)
	(In millions)
Level 3 Instruments Only
Securities available for sale:
Residential non-agency MBS	$	14		—			—			—		—		—			(1	)		—	—		$	13
Commercial non-agency MBS	—			—			1			103		—		—			—			—	—		104
Other debt securities	2			—			—			—		—		—			—			—	—		2
Total securities available for sale	$	16		—			1			103		—		—			(1	)		—	—		$	119
Mortgage servicing rights	$	179		(19	)	(a)	—			16		—		—			—			—	—		$	176
Total interest rate options derivatives, net	$	30		82		(a)	—			—		—		—			(71	)		—	—		$	41
_________
(a) Included in mortgage income.
	Nine Months Ended September 30, 2013
	Opening			Total Realized /						Purchases		Sales		Issuances			Settlements			Transfers	Transfers		Closing
	Balance			Unrealized																into	out of		Balance
	January 1,			Gains or Losses																Level 3	Level 3		September 30,
	2013			Included			Included																2013
				in Earnings			in Other
							Compre-
							hensive
							Income
							(Loss)
	(In millions)
Level 3 Instruments Only
Securities available for sale:
Residential non-agency MBS	$	13		—			—			—		—		—			(3	)		—	—		$	10
Other debt securities	2			—			—			—		—		—			—			—	—		2
Total securities available for sale	$	15		—			—			—		—		—			(3	)		—	—		$	12
Mortgage servicing rights	$	191		17		(a)	—			73		—		—			—			—	—		$	281
Total interest rate options derivatives, net	$	22		65		(a)	—			—		—		—			(75	)		—	—		$	12
_________
(a)	Included in mortgage income.
	Nine Months Ended September 30, 2012
				Total Realized /
				Unrealized Gains
				or Losses
	Opening			Included			Included			Purchases		Sales		Issuances			Settlements			Transfers	Transfers		Disposition of Morgan Keegan			Closing Balance September 30, 2012
	Balance			in			in Other													into	out of
	January 1,			Earnings			Compre-													Level 3	Level 3
	2012						hensive
							Income
							(Loss)
	(In millions)
Level 3 Instruments Only
Trading account assets (c):
Obligations of states and political subdivisions	$	139		(3	)		—			4		—		—			(16	)		—	—		(124	)		$	—
Commercial agency MBS	51			2			—			368		—		—			(317	)		—	—		(104	)		—
Other securities	1			4			—			2,248		—		—			(2,240	)		—	—		(13	)		—
Total trading account assets (d)	$	191		3		(a)	—			2,620		—		—			(2,573	)		—	—		(241	)		$	—
Securities available for sale:
Obligations of states and political subdivisions	$	20		—			(2	)		—		(16	)	—			(2	)		—	—		—			$	—
Residential non-agency MBS	16			—			—			—		—		—			(3	)		—	—		—			13
Commercial non-agency MBS	—			—			1			103		—		—			—			—	—		—			104
Other debt securities	—			—			—			—		—		—			—			3	(1	)	—			2
Total securities available for sale	$	36		—			(1	)		103		(16	)	—			(5	)		3	(1	)	—			$	119
Mortgage servicing rights	$	182		(50	)	(b)	—			44		—		—			—			—	—		—			$	176
Trading account liabilities:
Commercial agency MBS	$	5		—			—			37		—		—			—			—	—		(42	)		$	—
Other securities	2			—			—			12		—		—			(4	)		—	—		(10	)		—
Total trading account liabilities (d)	$	7		—			—			49		—		—			(4	)		—	—		(52	)		$	—
Total interest rate options derivatives, net	$	13		193		(b)	—			—		—		—			(165	)		—	—		—			$	41
_________
(a)	Included in discontinued operations, on a net basis.
(b)	Included in mortgage income.
(c)	Income from trading account assets primarily represents gains/(losses) on disposition, which inherently includes commissions on security transactions during the period.
(d)	All amounts related to trading account assets and trading account liabilities are related to Morgan Keegan (see Note 2 for discussion of sale of Morgan Keegan).
The following table presents the fair value adjustments related to non-recurring fair value measurements:
	Three Months Ended September 30							Nine Months Ended September 30
	2013			2012				2013			2012
	(In millions)
Loans held for sale	$	(16	)	$	(54	)		$	(58	)	$	(155	)
Foreclosed property and other real estate	(8		)	(18		)		(27		)	(56		)
The following tables present detailed information regarding assets and liabilities measured at fair value using significant unobservable inputs (Level 3) as of September 30, 2013 and December 31, 2012. The tables include the valuation techniques and the significant unobservable inputs utilized. The range of each significant unobservable input as well as the weighted average within the range utilized at September 30, 2013 and December 31, 2012 are included. Following the tables are a description of the valuation technique and the sensitivity of the technique to changes in the significant unobservable input.
	30-Sep-13
	Level 3		Valuation	Unobservable		Quantitative Range of
	Estimated Fair Value at		Technique	Input(s)		Unobservable Inputs and
	September 30, 2013					(Weighted-Average)
	(Dollars in millions)
Recurring fair value measurements:
Securities available for sale:
Residential non-agency MBS	$10		Discounted cash flow	Spread to LIBOR		5.3% -69.8% (15.0%)
				Weighted-average prepayment speed (CPR; percentage)		9.1% -12.4% (10.8%)
				Probability of default		1.30%
				Loss severity		39.40%
Other debt securities	$2		Market comparable	Evaluated quote on same issuer/comparable bond		98.6% -100.0% (99.5%)
				Comparability adjustments		1.40%
Mortgage servicing rights(a)	$281		Discounted cash flow	Weighted-average prepayment speed (CPR; percentage)		7.3% -24.8% (9.4%)
				Option-adjusted spread (percentage)		7.4% -23.6% (10.1%)
Derivative assets:
Interest rate options	$12		Discounted cash flow	Weighted-average prepayment speed (CPR; percentage)		7.3% -24.8% (9.4%)
				Option-adjusted spread (percentage)		7.4% -23.6% (10.1%)
				Pull-through		10.1% -99.2% (78.4%)
Nonrecurring fair value measurements:
Loans held for sale	$29		Multiple data points, including discount to appraised value of collateral based on recent market activity for sales of similar loans	Appraisal comparability adjustment (discount)		2.0% -98.0% (49.4%)
Foreclosed property and other real estate	$21		Discount to appraised value of property based on recent market activity for sales of similar properties	Appraisal comparability adjustment (discount)		30.0%-100.0% (34.7%)
_________
(a)	See Note 5 for additional disclosures related to assumptions used in the fair value calculation for mortgage servicing rights.
	31-Dec-12
	Level 3		Valuation	Unobservable		Quantitative Range of
	Estimated Fair Value at		Technique	Input(s)		Unobservable Inputs and
	December 31, 2012					(Weighted-Average)
	(Dollars in millions)
Recurring fair value measurements:
Securities available for sale:
Residential non-agency MBS	$13		Discounted cash flow	Spread to LIBOR		5.4% -69.9% (16.9%)
				Weighted-average prepayment speed (CPR; percentage)		7.6% -30.3% (12.2%)
				Probability of default		0.2% - 1.2% (1.0%)
				Loss severity		39.3% -100.0% (48.1%)
Other debt securities	$2		Market comparable	Evaluated quote on same issuer/comparable bond		99.1% -100.0% (99.6%)
				Comparability adjustments		1.00%
Mortgage servicing rights(a)	$191		Discounted cash flow	Weighted-average prepayment speed (CPR; percentage)		4.7% -25.9% (17.6%)
				Option-adjusted spread (percentage)		1.0% -23.6% (7.5%)
Derivative assets:
Interest rate options	$22		Discounted cash flow	Weighted-average prepayment speed (CPR; percentage)		4.7% -25.9% (17.6%)
				Option-adjusted spread (percentage)		1.0% -23.6% (7.5%)
				Pull-through		55.7% -98.8% (76.9%)
Nonrecurring fair value measurements:
Loans held for sale	$51		Multiple data points, including discount to appraised value of collateral based on recent market activity for sales of similar loans	Appraisal comparability adjustment (discount)		8.0% -94.0% (46.3%)
Foreclosed property and other real estate	$40		Discount to appraised value of property based on recent market activity for sales of similar properties	Appraisal comparability adjustment (discount)		35.0% -100.0% (36.2%)
_________
(a) See Note 7 to the consolidated financial statements of the 2012 Annual Report on Form 10-K for additional disclosures related to assumptions used in the fair value calculation for mortgage servicing rights.
RECURRING FAIR VALUE MEASUREMENTS USING SIGNIFICANT UNOBSERVABLE INPUTS
Securities available for sale
Mortgage-backed securities: residential non-agency—The fair value reported in this category relates to retained interests in legacy securitizations. Significant unobservable inputs include the spread to LIBOR, constant prepayment rate, probability of default, and loss severity in the event of default. Significant increases in any of these inputs in isolation would result in significantly lower fair value measurement. Generally, a change in the assumption used for the probability of default is accompanied by a directionally similar change in the assumption used for loss severity and a directionally opposite change in the assumption used for prepayment rates.
Other debt securities—Significant unobservable inputs include evaluated quotes on comparable bonds for the same issuer and management-determined comparability adjustments. Changes in the evaluated quote on comparable bonds would result in a directionally similar change in the fair value of the other debt securities.
Mortgage Servicing Rights
The significant unobservable inputs used in the fair value measurement of mortgage servicing rights ("MSR") are option adjusted spreads (“OAS”) and prepayment speed. This method requires generating cash flow projections over multiple interest rate scenarios and discounting those cash flows at a risk adjusted rate. Additionally, the impact of prepayments and changes in the OAS are based on a variety of underlying inputs such as servicing costs. Increases or decreases to the underlying cash flow inputs will have a corresponding impact on the value of the MSR asset. The net change in unrealized gains (losses) included in earnings related to MSRs held at period end are disclosed as the changes in valuation inputs or assumptions. See Note 5 for these amounts and additional disclosures related to assumptions used in the fair value calculation for MSRs.
Derivative assets
Interest rate options—These instruments are interest rate lock agreements made in the normal course of originating residential mortgage loans. Significant unobservable inputs in the fair value measurement are OAS, prepayment speeds, and pull-through. The impact of OAS and prepayment speed inputs in the valuation of these derivative instruments are consistent with the MSR discussion above. Pull-through is an estimate of the number of interest rate lock commitments that will ultimately become funded loans. Increases or decreases in the pull-through assumption will have a corresponding impact on the value of these derivative assets.
NON-RECURRING FAIR VALUE MEASUREMENTS USING SIGNIFICANT UNOBSERVABLE INPUTS
Loans held for sale
Loans held for sale are valued based on multiple data points indicating the fair value for each loan. The primary data point for loans held for sale is a discount to the appraised value of the underlying collateral, which considers the return required by potential buyers of the loans. Management establishes this discount or comparability adjustment based on recent sales of loans secured by similar property types. As liquidity in the market increases or decreases, the comparability adjustment and the resulting asset valuation are impacted.
Foreclosed property and other real estate
Foreclosed property and other real estate are valued based on offered quotes as available. If no sales contract is pending for a specific property, management establishes a comparability adjustment to the appraised value based on historical activity considering proceeds for properties sold versus the corresponding appraised value. Increases or decreases in realization for properties sold impact the comparability adjustment for similar assets remaining on the balance sheet.
FAIR VALUE OPTION
Regions has elected the fair value option for FNMA and FHLMC eligible thirty-year residential mortgage loans held for sale. Additionally, Regions previously elected the fair value option for FNMA and FHLMC eligible fifteen-year residential mortgage loans originated with the intent to sell. During the fourth quarter of 2012, Regions began the process of retaining ten and fifteen-year residential mortgage loans on its balance sheet. These elections allow for a more effective offset of the changes in fair values of the loans and the derivative instruments used to economically hedge them without the burden of complying with the requirements for hedge accounting. Regions has not elected the fair value option for other loans held for sale primarily because they are not economically hedged using derivative instruments. Fair values of mortgage loans held for sale are based on traded market prices of similar assets where available and/or discounted cash flows at market interest rates, adjusted for securitization activities that include servicing values and market conditions, and are recorded in loans held for sale in the consolidated balance sheets.
The following table summarizes the difference between the aggregate fair value and the aggregate unpaid principal balance for mortgage loans held for sale measured at fair value:
	30-Sep-13										December 31, 2012
	Aggregate			Aggregate				Aggregate Fair			Aggregate			Aggregate				Aggregate Fair
	Fair Value			Unpaid				Value Less			Fair Value			Unpaid				Value Less
				Principal				Aggregate						Principal				Aggregate
								Unpaid										Unpaid
								Principal										Principal
	(In millions)
Mortgage loans held for sale, at fair value	$	611		$	589			$	22		$	1,282		$	1,235			$	47
Interest income on mortgage loans held for sale is recognized based on contractual rates and is reflected in interest income on loans held for sale in the consolidated statements of income. The following table details net gains resulting from changes in fair value of these loans which were recorded in mortgage income in the consolidated statements of income during the three and nine months ended September 30, 2013 and 2012, respectively. These changes in fair value are mostly offset by economic hedging activities. An immaterial portion of these amounts was attributable to changes in instrument-specific credit risk.
	Mortgage loans held for sale, at fair value
	Three Months Ended September 30							Nine Months Ended September 30
	2013			2012				2013			2012
	(In millions)
Net gains (losses) resulting from changes in fair value	$	38		$	19			$	(24	)	$	31
The carrying amounts and estimated fair values, as well as the level within the fair value hierarchy, of the Company’s financial instruments as of September 30, 2013 are as follows:
	30-Sep-13
	Carrying			Estimated				Level 1			Level 2			Level 3
	Amount			Fair
				Value(1)
	(In millions)
Financial assets:
Cash and cash equivalents	$	3,859		$	3,859			$	3,859		$	—		$	—
Trading account securities	119			119				119			—			—
Securities held to maturity	2,388			2,385				2			2,383			—
Securities available for sale	21,630			21,630				187			21,431			12
Loans held for sale	673			673				—			611			62
Loans (excluding leases), net of unearned income and allowance for loan losses(2)(3)	72,574			67,029				—			—			67,029
Other interest-earning assets	105			105				—			105			—
Derivative assets	1,301			1,301				—			1,289			12
Financial liabilities:
Derivative liabilities	1,350			1,350				—			1,350			—
Deposits	92,321			92,325				—			92,325			—
Short-term borrowings	1,773			1,773				—			1,773			—
Long-term borrowings	4,838			5,072				886			—			4,186
Loan commitments and letters of credit	113			618				—			—			618
Indemnification obligation	244			217				—			—			217
_________
-1	Estimated fair values are consistent with an exit price concept. The assumptions used to estimate the fair values are intended to approximate those that a market participant would use in a hypothetical orderly transaction. In estimating fair value, the Company makes adjustments for interest rates, market liquidity and credit spreads as appropriate.
-2	The estimated fair value of portfolio loans assumes sale of the loans to a third-party financial investor. Accordingly, the value to the Company if the loans were held to maturity is not reflected in the fair value estimate. In the current whole loan market, financial investors are generally requiring a higher rate of return than the return inherent in loans if held to maturity. The fair value discount at September 30, 2013 was $5.5 billion or 7.6 percent.
-3	Excluded from this table is the lease carrying amount of $1.8 billion at September 30, 2013.
The carrying amounts and estimated fair values, as well as the level within the fair value hierarchy, of the Company's financial instruments as of December 31, 2012 are as follows:
	December 31, 2012
	Carrying			Estimated				Level 1			Level 2			Level 3
	Amount			Fair
				Value(1)
	(In millions)
Financial assets:
Cash and cash equivalents	$	5,489		$	5,489			$	5,489		$	—		$	—
Trading account securities	116			116				116			—			—
Securities held to maturity	10			11				2			9			—
Securities available for sale	27,244			27,244				177			27,052			15
Loans held for sale	1,383			1,383				—			1,282			101
Loans (excluding leases), net of unearned income and allowance for loan losses(2)(3)	70,574			63,961				—			—			63,961
Other interest-earning assets	900			900				—			900			—
Derivative assets	1,915			1,915				—			1,893			22
Financial liabilities:
Derivative liabilities	1,825			1,825				—			1,825			—
Deposits	95,474			95,528				—			95,528			—
Short-term borrowings	1,574			1,574				—			1,574			—
Long-term borrowings	5,861			6,138				1,037			—			5,101
Loan commitments and letters of credit	121			667				—			—			667
Indemnification obligation	345			329				—			—			329
_________
-1	Estimated fair values are consistent with an exit price concept. The assumptions used to estimate the fair values are intended to approximate those that a market participant would use in a hypothetical orderly transaction. In estimating fair value, the Company makes adjustments for interest rates, market liquidity and credit spreads as appropriate.
-2	The estimated fair value of portfolio loans assumes sale of the loans to a third-party financial investor. Accordingly, the value to the Company if the loans were held to maturity is not reflected in the fair value estimate. In the current whole loan market, financial investors are generally requiring a higher rate of return than the return inherent in loans if held to maturity. The fair value discount at December 31, 2012 was $6.6 billion or 9.4 percent.
-3	Excluded from this table is the lease carrying amount of $1.5 billion at December 31, 2012.

Business_Segment_Information

Business Segment Information	9 Months Ended
	Sep. 30, 2013
Text Block [Abstract]	'
Business Segment Information	'
	BUSINESS SEGMENT INFORMATION
	Each of Regions’ reportable segments is a strategic business unit that serves specific needs of Regions’ customers based on the products and services provided. The segments are based on the manner in which management views the financial performance of the business. The Company has three reportable segments: Business Services, Consumer Services and Wealth Management, with the remainder split between Discontinued Operations and Other. During the third quarter of 2012, Regions reorganized its internal management structure and, accordingly, its segment reporting structure. Historically, Regions’ primary business segment was Banking/Treasury, representing the Company’s banking network (including the Consumer and Commercial Banking function along with the Treasury function). Other segments included Investment Banking/Brokerage/Trust and Insurance. During the second quarter of 2012, Regions consummated the sale of Morgan Keegan (the primary component of Investment Banking/Brokerage/Trust). Shortly thereafter, Regions announced organizational changes to better integrate and execute the Company’s strategic priorities across all business groups and geographies. As a result, Regions revised its reportable segments. During the current year, minor reclassifications were made among the segments to more appropriately present management's current view of the segments. Prior periods’ information has been restated to conform to the current periods’ presentation.
	The following tables present financial information for each reportable segment for the period indicated.
		Three Months Ended September 30, 2013
		Business		Consumer		Wealth		Other			Continuing		Discontinued			Consolidated
		Services		Services		Management					Operations		Operations
		(In millions)
	Net interest income (loss)	$	472	$	460	$	44	$	(152	)	$	824	$	—		$	824
	Provision (credit) for loan losses	40		68		6		(96		)	18		—			18
	Non-interest income	114		269		111		1			495		—			495
	Non-interest expense	254		496		114		20			884		1			885
	Income (loss) before income taxes	292		165		35		(75		)	417		(1		)	416
	Income tax expense (benefit)	111		63		14		(64		)	124		(1		)	123
	Net income (loss)	$	181	$	102	$	21	$	(11	)	$	293	$	—		$	293
	Average assets	$	52,597	$	28,972	$	3,002	$	32,346		$	116,917	$	—		$	116,917
		Three Months Ended September 30, 2012
		Business		Consumer		Wealth		Other			Continuing		Discontinued			Consolidated
		Services		Services		Management					Operations		Operations
		(In millions)
	Net interest income (loss)	$	495	$	464	$	48	$	(190	)	$	817	$	—		$	817
	Provision (credit) for loan losses	144		108		10		(229		)	33		—			33
	Non-interest income	116		314		82		21			533		1			534
	Non-interest expense	224		505		106		34			869		20			889
	Income (loss) before income taxes	243		165		14		26			448		(19		)	429
	Income tax expense (benefit)	91		62		6		(23		)	136		(8		)	128
	Net income (loss)	$	152	$	103	$	8	$	49		$	312	$	(11	)	$	301
	Average assets	$	48,664	$	29,652	$	3,253	$	39,962		$	121,531	$	30		$	121,561
		Nine Months Ended September 30, 2013
		Business		Consumer		Wealth		Other			Continuing		Discontinued			Consolidated
		Services		Services		Management					Operations		Operations
		(In millions)
	Net interest income (loss)	$	1,395	$	1,384	$	133	$	(482	)	$	2,430	$	—		$	2,430
	Provision (credit) for loan losses	205		215		18		(379		)	59		—			59
	Non-interest income	343		822		289		39			1,493		—			1,493
	Non-interest expense	723		1,441		329		117			2,610		(1		)	2,609
	Income (loss) before income taxes	810		550		75		(181		)	1,254		1			1,255
	Income tax expense (benefit)	308		209		29		(186		)	360		—			360
	Net income	$	502	$	341	$	46	$	5		$	894	$	1		$	895
	Average assets	$	49,108	$	29,008	$	3,039	$	36,933		$	118,088	$	—		$	118,088
		Nine Months Ended September 30, 2012
		Business		Consumer		Wealth		Other			Continuing		Discontinued			Consolidated
		Services		Services		Management					Operations		Operations
		(In millions)
	Net interest income (loss)	$	1,507	$	1,386	$	144	$	(555	)	$	2,482	$	7		$	2,489
	Provision (credit) for loan losses	469		365		25		(683		)	176		—			176
	Non-interest income	353		906		253		52			1,564		256			1,820
	Non-interest expense	694		1,510		319		101			2,624		343			2,967
	Income (loss) before income taxes	697		417		53		79			1,246		(80		)	1,166
	Income tax expense (benefit)	264		158		21		(99		)	344		(33		)	311
	Net income (loss)	$	433	$	259	$	32	$	178		$	902	$	(47	)	$	855
	Average assets	$	48,971	$	29,784	$	3,481	$	40,331		$	122,567	$	948		$	123,515

Commitments_and_Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2013
Text Block [Abstract]	'
Commitments and Contingencies	'
	COMMITMENTS, CONTINGENCIES AND GUARANTEES
	COMMERCIAL COMMITMENTS
	Regions issues off-balance sheet financial instruments in connection with lending activities. The credit risk associated with these instruments is essentially the same as that involved in extending loans to customers and is subject to Regions’ normal credit approval policies and procedures. Regions measures inherent risk associated with these instruments by recording a reserve for unfunded commitments based on an assessment of the likelihood that the guarantee will be funded and the creditworthiness of the customer or counterparty. Collateral is obtained based on management’s assessment of the creditworthiness of the customer.
	Credit risk associated with these instruments is represented by the contractual amounts indicated in the following table:
		September 30, 2013		December 31, 2012
		(In millions)
	Unused commitments to extend credit	$	40,642	$	38,160
	Standby letters of credit	1,651		1,872
	Commercial letters of credit	50		27
	Liabilities associated with standby letters of credit	38		37
	Assets associated with standby letters of credit	38		37
	Reserve for unfunded credit commitments	74		83
	Unused commitments to extend credit—To accommodate the financial needs of its customers, Regions makes commitments under various terms to lend funds to consumers, businesses and other entities. These commitments include (among others) credit card and other revolving credit agreements, term loan commitments and short-term borrowing agreements. Many of these loan commitments have fixed expiration dates or other termination clauses and may require payment of a fee. Since many of these commitments are expected to expire without being funded, the total commitment amounts do not necessarily represent future liquidity requirements.
	Standby letters of credit—Standby letters of credit are also issued to customers which commit Regions to make payments on behalf of customers if certain specified future events occur. Regions has recourse against the customer for any amount required to be paid to a third party under a standby letter of credit. Historically, a large percentage of standby letters of credit expired without being funded. The contractual amount of standby letters of credit represents the maximum potential amount of future payments Regions could be required to make and represents Regions’ maximum credit risk.
	Commercial letters of credit—Commercial letters of credit are issued to facilitate foreign or domestic trade transactions for customers. As a general rule, drafts will be drawn when the goods underlying the transaction are in transit.
	LEGAL CONTINGENCIES
	Regions, its affiliates and subsidiaries, and current and former officers, directors and employees, are sometimes collectively referred to as Regions and Related Parties. Regions and its subsidiaries are subject to loss contingencies related to litigation, claims, investigations and legal and administrative cases and proceedings arising in the ordinary course of business. Regions evaluates these contingencies based on information currently available, including advice of counsel. Regions establishes accruals for those matters when a loss contingency is considered probable and the related amount is reasonably estimable. Any accruals are periodically reviewed and may be adjusted as circumstances change. Some of Regions' exposure with respect to loss contingencies may be offset by applicable insurance coverage. In determining the amounts of any accruals or estimates of possible loss contingencies however, Regions does not take into account the availability of insurance coverage. In addition, as previously discussed, Regions has agreed to indemnify Raymond James for all legal matters resulting from pre-closing activities in conjunction with the sale of Morgan Keegan and recorded an indemnification obligation at fair value in the second quarter of 2012. The indemnification obligation had a carrying amount of approximately $244 million and an estimated fair value of approximately $217 million as of September 30, 2013 (see Note 13).When it is practicable, Regions estimates loss contingencies for possible litigation and claims, whether or not there is an accrued probable loss. When Regions is able to estimate such possible losses, and when Regions estimates that it is reasonably possible it could incur losses, in excess of amounts accrued, Regions is required to make a disclosure of the aggregate estimation. Regions currently estimates that it is reasonably possible that it may experience losses in excess of what Regions has accrued in an aggregate amount up to approximately $90 million as of September 30, 2013, with it also being reasonably possible that Regions could incur no losses in excess of amounts accrued. However, as available information changes, the matters for which Regions is able to estimate, as well as the estimates themselves will be adjusted, accordingly. The legal contingencies included in the reasonably possible estimate include those that are subject to the indemnification agreement with Raymond James.
	Assessments of litigation and claims exposures are difficult due to many factors that involve inherent unpredictability. Those factors include the following: the varying stages of the proceedings, particularly in the early stages; unspecified, unsupported, or uncertain damages; damages other than compensatory such as punitive damages; a matter presenting meaningful legal uncertainties, including novel issues of law; multiple defendants and jurisdictions; whether discovery has begun or not or discovery is not complete; meaningful settlement discussions have not commenced; and whether the claim involves a class action and if so, how the class is defined. There are numerous factors that result in a greater degree of complexity in class-action lawsuits as compared to other types of litigation. Due to the many intricacies involved in class-action lawsuits at the early stages of these matters, obtaining clarity on a reasonable estimate is difficult which may call into question its reliability. As a result of some of these factors, Regions may be unable to estimate reasonably possible losses with respect to some of the matters disclosed below. The aggregated estimated amount provided above therefore may not include an estimate for every matter disclosed below.
	Beginning in December 2007, Regions and certain of its affiliates have been named in class-action lawsuits filed in federal and state courts on behalf of investors who purchased shares of certain Regions Morgan Keegan Select Funds (the “Funds”) and stockholders of Regions. These cases have been consolidated into class-actions and stockholder derivative actions for the open-end and closed-end Funds. The Funds were formerly managed by Regions Investment Management, Inc. (“Regions Investment Management”). Regions Investment Management no longer manages these Funds, which were transferred to Hyperion Brookfield Asset Management (“Hyperion”) in 2008. Certain of the Funds have since been terminated by Hyperion. The complaints contain various allegations, including claims that the Funds and the defendants misrepresented or failed to disclose material facts relating to the activities of the Funds. Plaintiffs have requested equitable relief and unspecified monetary damages. These cases are in various stages and no classes have been certified. Settlement discussions are ongoing in certain cases, and the Court has granted final approval of a settlement in the closed-end Funds class-action and shareholder derivative case. Certain of the shareholders in these Funds and other interested parties have entered into arbitration proceedings and individual civil claims, in lieu of participating in the class actions. These lawsuits and proceedings are subject to the indemnification agreement with Raymond James discussed above.
	In October 2010, a purported class-action lawsuit was filed by Regions’ stockholders in the U.S. District Court for the Northern District of Alabama against Regions and certain former officers of Regions ("the 2010 Claim"). The 2010 Claim alleges violations of the federal securities laws, including allegations that statements that were materially false and misleading were included in filings made with the Securities and Exchange Commission ("SEC"). The plaintiffs have requested equitable relief and unspecified monetary damages. On June 7, 2011, the trial court denied Regions’ motion to dismiss the 2010 Claim. On June 14, 2012, the trial court granted class certification. The Eleventh Circuit Court of Appeals is reviewing the trial court’s grant of class-action certification. The case is now stayed pending that review.
	In December 2009, Regions and certain Related Persons were named in a consolidated shareholder derivative action filed in Jefferson County, Alabama. The complaint alleges mismanagement, waste of corporate assets, breach of fiduciary duty and unjust enrichment relating to bonuses and other benefits received by executive management. Plaintiffs requested equitable relief and unspecified monetary damages. The case was dismissed with prejudice on December 6, 2012. Plaintiffs' motion to alter, amend or vacate that judgment was denied on March 25, 2013. Plaintiffs appealed the order of dismissal to the Alabama Supreme Court on April 18, 2013.
	In July 2006, Morgan Keegan and a former Morgan Keegan analyst were named as defendants in a lawsuit filed by a Canadian insurance and financial services company and its American subsidiary in the Circuit Court of Morris County, New Jersey. Plaintiffs made claims under a civil Racketeer Influenced and Corrupt Organizations (“RICO”) statute, for commercial disparagement, tortious interference with contractual relationships, tortious interference with prospective economic advantage and common law conspiracy. Plaintiffs allege that defendants engaged in a multi-year conspiracy to publish and disseminate false and defamatory information about plaintiffs to improperly drive down plaintiffs’ stock price, so that others could profit from short positions. Plaintiffs allege that defendants’ actions damaged their reputations and harmed their business relationships. Plaintiffs allege a number of categories of damages they sustained, including lost insurance business, lost financings and increased financing costs, increased audit fees and directors and officers insurance premiums and lost acquisitions, and have requested monetary damages. On September 12, 2012, the trial court dismissed the case with prejudice. Plaintiffs have filed an appeal. This matter is subject to the indemnification agreement with Raymond James.
	The SEC and states of Missouri and Texas are investigating alleged securities law violations by Morgan Keegan in the underwriting and sale of certain municipal bonds. An enforcement action was brought by the Missouri Secretary of State on April 4, 2013, seeking monetary penalties and other relief. A civil action was brought by institutional investors of the bonds on March 19, 2012, seeking a return of their investment and unspecified compensatory and punitive damages. A class action was brought on behalf of retail purchasers of the bonds on September 4, 2012, seeking unspecified compensatory and punitive damages. Several claims by individual investors and investor groups are also pending. These actions are in the early stages. These matters are also subject to the indemnification agreement with Raymond James.
	Regions is involved in information-gathering requests and investigations (both formal and informal) as well as reviews, examinations and proceedings (collectively, “Inquiries”) by various governmental regulatory agencies, law enforcement authorities and self-regulatory bodies regarding Regions’ business, business practices and policies as well as the conduct of persons with whom it does business. Additional Inquiries will arise from time to time. In connection with those Inquiries, Regions receives document requests, subpoenas and other requests for information. The Inquiries, including those described below, could develop into administrative, civil or criminal proceedings or enforcement actions that could result in consequences that have a material effect on Regions' consolidated financial position, results of operations or cash flows as a whole. Such consequences could include adverse judgments, findings, settlements, penalties, fines, orders, injunctions, restitution, or alterations in our business practices, and could result in additional expenses and collateral costs, including reputational damage.
	Regions has received Inquiries from government authorities primarily concerning accounting matters from 2009 and earlier periods that also have been the subject of the 2010 Claim. Regions is cooperating and has provided responses to these Inquiries. In addition, the Board of Directors is conducting investigations regarding certain of the matters raised in these Inquiries. More recently, Regions has received a subpoena from the Office of Inspector General of the U. S. Department of Housing and Urban Development regarding mortgage-related practices, including those relating to origination practices for loans insured by the Federal Housing Administration. Regions is cooperating with this Inquiry.
	While the final outcome of litigation and claims exposures or of any Inquiries is inherently unpredictable, management is currently of the opinion that the outcome of pending and threatened litigation and Inquiries will not have a material effect on Regions’ business, consolidated financial position, results of operations or cash flows as a whole. However, in the event of unexpected future developments, it is reasonably possible that an adverse outcome in any of the matters discussed above could be material to Regions’ business, consolidated financial position, results of operations or cash flows for any particular reporting period of occurrence.
	GUARANTEES
	INDEMNIFICATION OBLIGATION
	As discussed in Note 2, on April 2, 2012 (“Closing Date”), Regions closed the sale of Morgan Keegan and related affiliates to Raymond James. In connection with the sale, Regions agreed to indemnify Raymond James for all legal matters related to pre-closing activities, including matters filed subsequent to the Closing Date that relate to actions that occurred prior to closing. Losses under the indemnification include legal and other expenses, such as costs for judgments, settlements and awards associated with the defense and resolution of the indemnified matters. The maximum potential amount of future payments that Regions could be required to make under the indemnification is indeterminable due to the indefinite term of some of the obligations. However, Regions expects the majority of ongoing legal matters to be resolved within approximately two to three years.
	As of the Closing Date, the fair value of the indemnification obligation, which includes defense costs and unasserted claims, was approximately $385 million, of which approximately $256 million was recognized as a reduction to the gain on sale of Morgan Keegan. The fair value was determined through the use of a present value calculation that takes into account the future cash flows that a market participant would expect to receive from holding the indemnification liability as an asset. Regions performed a probability-weighted cash flow analysis and discounted the result at a credit-adjusted risk free rate. The fair value of the indemnification liability includes amounts that Regions had previously determined meet the definition of probable and reasonably estimable. Adjustments to the indemnification obligation are recorded within professional and legal expenses within discontinued operations (see Note 2). As of September 30, 2013, the carrying value of the indemnification obligation was approximately $244 million.
	VISA INDEMNIFICATION
	As a member of the Visa USA network, Regions, along with other members, indemnified Visa USA against litigation. On October 3, 2007, Visa USA was restructured and acquired several Visa affiliates. In conjunction with this restructuring, Regions' indemnification of Visa USA was modified to cover specific litigation (“covered litigation”).
	A portion of Visa's proceeds from its initial public offering ("IPO") was escrowed to fund the covered litigation. During the first quarter of 2013, Visa made a settlement payment related to the covered litigation which reduced Regions' share of the escrow account to approximately zero compared to $22 million at December 31, 2012. Regions made a corresponding adjustment to reduce its liability to approximately zero compared to $22 million at December 31, 2012. The balances related to the escrow and the corresponding liability remain approximately zero as of September 30, 2013. To the extent that the amount available under the escrow arrangement, or subsequent fundings of the escrow account via reductions in the class B share conversion ratio, is insufficient to fully resolve the covered litigation, Visa will enforce the indemnification obligations of Visa USA's members for any excess amount. At this time, Regions has concluded that it is not probable that covered litigation exposure will exceed the class B share value.

Recent_Accounting_Pronouncemen

Recent Accounting Pronouncements	9 Months Ended
	Sep. 30, 2013
Text Block [Abstract]	'
Recent Accounting Pronouncements	'
	RECENT ACCOUNTING PRONOUNCEMENTS
	In December 2011, the Financial Accounting Standards Board ("FASB") issued new accounting guidance that eliminates offsetting of financial instruments disclosure differences between GAAP and International Financial Reporting Standards ("IFRS"). New disclosures are required for recognized financial instruments, such as derivatives, repurchase agreements, and reverse repurchase agreements, that are either (1) offset on the balance sheet in accordance with the FASB's offsetting guidance or (2) subject to an enforceable master netting arrangement or similar agreement, regardless of whether they are offset in accordance with the FASB's offsetting guidance. The objective of the new disclosure requirements is to enable users of the financial statements to evaluate the effect or potential effect of netting arrangements on an entity's financial position, including the effect or potential effect of rights of setoff associated with certain financial instruments and derivative instruments. This amended guidance was applied retrospectively and was effective for fiscal years, and interim periods within those years, beginning on or after January 1, 2013. Regions adopted this guidance with first quarter 2013 financial reporting. See Notes 7 and 12 for the newly-required disclosures.
	In July 2012, the FASB issued new accounting guidance related to the impairment of indefinite-lived intangible assets. The guidance simplifies how entities test indefinite-lived intangible assets, other than goodwill, and is similar to the new qualitative impairment test for goodwill. The guidance allows entities to elect to first perform qualitative tests to determine the likelihood that the indefinite-lived intangible asset's fair value is less than its carrying value. If it is determined that it is more likely than not that the fair value of the indefinite-lived intangible asset is less than its carrying amount, the entity would then perform the first step of the impairment test. The guidance was effective for annual and interim impairment tests performed for fiscal years beginning after September 15, 2012. Regions adopted this guidance beginning with the first quarter 2013 financial reporting. The guidance did not have a material impact upon adoption.
	In February 2013, the FASB issued new accounting guidance related to disclosure of significant amounts reclassified out of accumulated other comprehensive income by component and the respective line items of net income. The guidance was effective for fiscal periods beginning after December 15, 2012. Regions adopted this guidance beginning with the first quarter 2013 financial reporting. See Note 8 for the newly-required disclosure.
	In July 2013, the FASB issued new accounting guidance to include the Fed Funds Effective Swap Rate as an appropriate benchmark interest rate in the accounting for fair value and cash flow hedges in the United States. The guidance is effective prospectively for qualifying new or redesignated hedging relationships entered into on or after July 17, 2013. The amended guidance did not have a material impact upon adoption.
	Further information related to recent accounting pronouncements and accounting changes adopted by Regions prior to the first quarter of 2013 is included in the Annual Report on Form 10-K for the year ended December 31, 2012.

Discontinued_Operations_Tables

Discontinued Operations (Tables)	9 Months Ended
	Sep. 30, 2013
Text Block [Abstract]	'
Condensed Results Of Operations For Discontinued Operations	'
	The following table represents the condensed results of operations for discontinued operations for the three and nine months ended September 30:
		Three Months Ended September 30						Nine Months Ended September 30
		2013			2012			2013			2012
		(In millions, except per share data)
	Interest income	$	—		$	—		$	—		$	8
	Interest expense	—			—			—			1
	Net interest income	—			—			—			7
	Non-interest income:
	Brokerage, investment banking and capital markets	—			—			—			233
	Gain on sale	—			1			—			16
	Other	—			—			—			7
	Total non-interest income	—			1			—			256
	Non-interest expense:
	Salaries and employee benefits	—			—			—			171
	Net occupancy expense	—			—			—			9
	Furniture and equipment expense	—			—			—			8
	Professional and legal expenses	3			19			(1		)	125
	Other	(2		)	1			—			30
	Total non-interest expense	1			20			(1		)	343
	Income (loss) from discontinued operations before income taxes	(1		)	(19		)	1			(80		)
	Income tax expense (benefit)	(1		)	(8		)	—			(33		)
	Income (loss) from discontinued operations, net of tax	$	—		$	(11	)	$	1		$	(47	)
	Earnings (loss) per common share from discontinued operations:
	Basic	$	(0.00	)	$	(0.01	)	$	0		$	(0.04	)
	Diluted	$	(0.00	)	$	(0.01	)	$	0		$	(0.04	)

Securities_Tables

Securities (Tables)	9 Months Ended
	Sep. 30, 2013
Text Block [Abstract]	'
Schedule Of Amortized Cost, Gross Unrealized Gains And Losses, And Estimated Fair Value Of Securities Available For Sale And Securities Held To Maturity	'
	The amortized cost, gross unrealized gains and losses, and estimated fair value of securities held to maturity and securities available for sale are as follows:
		30-Sep-13
						Recognized in OCI (1)												Not recognized in OCI
		Amortized				Gross Unrealized Gains				Gross Unrealized Losses				Carrying Value				Gross			Gross				Estimated
		Cost																Unrealized			Unrealized				Fair
																		Gains			Losses				Value
		(In millions)
	Securities held to maturity:
	U.S. Treasury securities	$	2			$	—			$	—			$	2			$	—		$	—			$	2
	Federal agency securities	350				—				(15		)		335				1			—				336
	Mortgage-backed securities:
	Residential agency	1,914				—				(83		)		1,831				3			(6		)		1,828
	Commercial agency	229				—				(9		)		220				—			(1		)		219
		$	2,495			$	—			$	(107	)		$	2,388			$	4		$	(7	)		$	2,385
	Securities available for sale:
	U.S. Treasury securities	$	51			$	1			$	—			$	52										$	52
	Federal agency securities	98				1				—				99											99
	Obligations of states and political subdivisions	5				—				—				5											5
	Mortgage-backed securities:
	Residential agency	15,770				236				(101		)		15,905											15,905
	Residential non-agency	9				1				—				10											10
	Commercial agency	864				5				(14		)		855											855
	Commercial non-agency	1,211				12				(30		)		1,193											1,193
	Corporate and other debt securities	2,868				34				(88		)		2,814											2,814
	Equity securities	689				8				—				697											697
		$	21,565			$	298			$	(233	)		$	21,630										$	21,630
	_________
	(1) The gross unrealized losses recognized in other comprehensive income (OCI) on held to maturity securities resulted from a transfer of available for sale securities to held to maturity in the second quarter of 2013.
		December 31, 2012
		Amortized				Gross Unrealized Gains				Gross Unrealized Losses				Estimated
		Cost												Fair
														Value
		(In millions)
	Securities held to maturity:
	U.S. Treasury securities	$	2			$	—			$	—			$	2
	Federal agency securities	2				—				—				2
	Mortgage-backed securities:
	Residential agency	6				1				—				7
		$	10			$	1			$	—			$	11
	Securities available for sale:
	U.S. Treasury securities	$	50			$	2			$	—			$	52
	Federal agency securities	550				4				(1		)		553
	Obligations of states and political subdivisions	9				—				—				9
	Mortgage-backed securities:
	Residential agency	20,721				574				(18		)		21,277
	Residential non-agency	12				1				—				13
	Commercial agency	705				20				—				725
	Commercial non-agency	1,055				43				—				1,098
	Corporate and other debt securities	2,762				81				(8		)		2,835
	Equity securities	679				4				(1		)		682
		$	26,543			$	729			$	(28	)		$	27,244
Schedule Of Amortized Cost Of Equity Securities Related To Federal Reserve Bank Stock And Federal Home Loan Bank Stock	'
	Equity securities in the tables above included the following amortized cost related to Federal Reserve Bank stock and Federal Home Loan Bank (“FHLB”) stock. Shares in the Federal Reserve Bank and FHLB are accounted for at amortized cost, which approximates fair value.
			September 30, 2013				December 31, 2012
			(In millions)
	Federal Reserve Bank		$	495			$	484
	Federal Home Loan Bank		67				73
Schedule Of Cost And Estimated Fair Value Of Securities Available For Sale And Securities Held To Maturity By Contractual Maturity	'
	The amortized cost and estimated fair value of securities available for sale and securities held to maturity at September 30, 2013, by contractual maturity, are shown below. Expected maturities will differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties.
			Amortized				Estimated
			Cost				Fair Value
			(In millions)
	Securities held to maturity:
	Due in one year or less		$	1			$	1
	Due after one year through five years		2				2
	Due after five years through ten years		349				335
	Mortgage-backed securities:
	Residential agency		1,914				1,828
	Commercial agency		229				219
			$	2,495			$	2,385
	Securities available for sale:
	Due in one year or less		$	49			$	49
	Due after one year through five years		1,035				1,047
	Due after five years through ten years		1,555				1,500
	Due after ten years		383				374
	Mortgage-backed securities:
	Residential agency		15,770				15,905
	Residential non-agency		9				10
	Commercial agency		864				855
	Commercial non-agency		1,211				1,193
	Equity securities		689				697
			$	21,565			$	21,630
Schedule Of Gross Unrealized Losses And Estimated Fair Value Of Securities Available For Sale	'
	The following tables present gross unrealized losses and the related estimated fair value of securities available for sale and held to maturity at September 30, 2013 and for securities available for sale at December 31, 2012. There were no gross unrealized losses on debt securities held to maturity at December 31, 2012. For securities transferred to held for maturity from available for sale, the analysis in the tables below is comparing the securities' original amortized cost to its current estimated fair value. These securities are segregated between investments that have been in a continuous unrealized loss position for less than twelve months and twelve months or more.
			30-Sep-13
			Less Than Twelve								Twelve Months or More								Total
			Months
			Estimated				Gross				Estimated				Gross				Estimated			Gross
			Fair				Unrealized				Fair				Unrealized				Fair			Unrealized
			Value				Losses				Value				Losses				Value			Losses
			(In millions)
	Securities held to maturity:
	Federal agency securities		$	335			$	(14	)		$	—			$	—			$	335		$	(14	)
	Mortgage-backed securities:
	Residential agency		1,515				(71		)		311				(15		)		1,826			(86		)
	Commercial agency		218				(10		)		—				—				218			(10		)
			$	2,068			$	(95	)		$	311			$	(15	)		$	2,379		$	(110	)
	Securities available for sale:
	U.S. Treasury securities		$	6			$	—			$	9			$	—			$	15		$	—
	Federal agency securities		1				—				10				—				11			—
	Mortgage-backed securities:
	Residential agency		4,465				(94		)		273				(7		)		4,738			(101		)
	Commercial agency		467				(14		)		—				—				467			(14		)
	Commercial non-agency		709				(30		)		—				—				709			(30		)
	All other securities		1,716				(86		)		21				(2		)		1,737			(88		)
			$	7,364			$	(224	)		$	313			$	(9	)		$	7,677		$	(233	)
			December 31, 2012
			Less Than Twelve								Twelve Months or More								Total
			Months
			Estimated				Gross				Estimated				Gross				Estimated			Gross
			Fair				Unrealized				Fair				Unrealized				Fair			Unrealized
			Value				Losses				Value				Losses				Value			Losses
			(In millions)
	Securities available for sale:
	Federal agency securities		$	350			$	(1	)		$	—			$	—			$	350		$	(1	)
	Mortgage-backed securities:
	Residential agency		1,777				(16		)		157				(2		)		1,934			(18		)
	All other securities		884				(9		)		—				—				884			(9		)
			$	3,011			$	(26	)		$	157			$	(2	)		$	3,168		$	(28	)
Schedule Of Gross Gains And Gross Losses On Available For Sale Securities	'
	Gross realized gains and gross realized losses on sales of securities available for sale are shown in the table below. The cost of securities sold is based on the specific identification method.
			Three Months Ended September 30								Nine Months Ended September 30
			2013				2012				2013				2012
			(In millions)
	Gross realized gains		$	7			$	13			$	52			$	37
	Gross realized losses		(4		)		(1		)		(26		)		(1		)
	Securities gains, net		$	3			$	12			$	26			$	36

Loans_and_the_Allowance_for_Cr1

Loans and the Allowance for Credit Losses (Tables)	9 Months Ended
	Sep. 30, 2013
Text Block [Abstract]	'
Schedule Of Loan Portfolio, Net Of Unearned Income	'
	The following table presents the distribution of Regions' loan portfolio by segment and class, net of unearned income:
			September 30, 2013				December 31, 2012
			(In millions, net of unearned income)
	Commercial and industrial		$	29,863			$	26,674
	Commercial real estate mortgage—owner-occupied		9,566				10,095
	Commercial real estate construction—owner-occupied		377				302
	Total commercial		39,806				37,071
	Commercial investor real estate mortgage		5,613				6,808
	Commercial investor real estate construction		1,317				914
	Total investor real estate		6,930				7,722
	Residential first mortgage		12,856				12,963
	Home equity		11,349				11,800
	Indirect		2,889				2,336
	Consumer credit card		896				906
	Other consumer		1,166				1,197
	Total consumer		29,156				29,202
			$	75,892			$	73,995
Analysis Of The Allowance For Credit Losses By Portfolio Segment	'
			Three Months Ended September 30, 2013
			Commercial				Investor Real				Consumer				Total
							Estate
			(In millions)
	Allowance for loan losses, July 1, 2013		$	764			$	342			$	530			$	1,636
	Provision (credit) for loan losses		29				(37		)		26				18
	Loan losses:
	Charge-offs		(54		)		(13		)		(89		)		(156		)
	Recoveries		17				8				17				42
	Net loan losses		(37		)		(5		)		(72		)		(114		)
	Allowance for loan losses, September 30, 2013		756				300				484				1,540
	Reserve for unfunded credit commitments,		$	60			$	9			$	4			$	73
	1-Jul-13
	Provision (credit) for unfunded credit losses		3				(1		)		(1		)		1
	Reserve for unfunded credit commitments, September 30, 2013		63				8				3				74
	Allowance for credit losses, September 30, 2013		$	819			$	308			$	487			$	1,614
			Three Months Ended September 30, 2012
			Commercial				Investor Real				Consumer				Total
							Estate
			(In millions)
	Allowance for loan losses, July 1, 2012		$	884			$	766			$	641			$	2,291
	Provision (credit) for loan losses		37				(112		)		108				33
	Loan losses:
	Charge-offs		(91		)		(74		)		(133		)		(298		)
	Recoveries		17				4				15				36
	Net loan losses		(74		)		(70		)		(118		)		(262		)
	Allowance for loan losses, September 30, 2012		847				584				631				2,062
	Reserve for unfunded credit commitments,		$	61			$	26			$	4			$	91
	1-Jul-12
	Credit for unfunded credit losses		(3		)		(12		)		—				(15		)
	Reserve for unfunded credit commitments, September 30, 2012		58				14				4				76
	Allowance for credit losses, September 30, 2012		$	905			$	598			$	635			$	2,138
			Nine Months Ended September 30, 2013
			Commercial				Investor Real				Consumer				Total
							Estate
			(In millions)
	Allowance for loan losses, January 1, 2013		$	847			$	469			$	603			$	1,919
	Provision (credit) for loan losses		86				(136		)		109				59
	Loan losses:
	Charge-offs		(230		)		(59		)		(281		)		(570		)
	Recoveries		53				26				53				132
	Net loan losses		(177		)		(33		)		(228		)		(438		)
	Allowance for loan losses, September 30, 2013		756				300				484				1,540
	Reserve for unfunded credit commitments, January 1, 2013		$	69			$	10			$	4			$	83
	Credit for unfunded credit losses		(6		)		(2		)		(1		)		(9		)
	Reserve for unfunded credit commitments, September 30, 2013		63				8				3				74
	Allowance for credit losses, September 30, 2013		$	819			$	308			$	487			$	1,614
	Portion of ending allowance for loan losses:
	Individually evaluated for impairment		$	261			$	159			$	162			$	582
	Collectively evaluated for impairment		495				141				322				958
	Total allowance for loan losses		$	756			$	300			$	484			$	1,540
	Portion of loan portfolio ending balance:
	Individually evaluated for impairment		$	1,184			$	1,006			$	1,589			$	3,779
	Collectively evaluated for impairment		38,622				5,924				27,567				72,113
	Total loans evaluated for impairment		$	39,806			$	6,930			$	29,156			$	75,892
			Nine Months Ended September 30, 2012
			Commercial				Investor Real				Consumer				Total
							Estate
			(In millions)
	Allowance for loan losses, January 1, 2012		$	1,030			$	991			$	724			$	2,745
	Provision (credit) for loan losses		82				(202		)		296				176
	Loan losses:
	Charge-offs		(323		)		(231		)		(435		)		(989		)
Recoveries		58				26				46				130
Net loan losses		(265		)		(205		)		(389		)		(859		)
Allowance for loan losses, September 30, 2012		847				584				631				2,062
Reserve for unfunded credit commitments,		$	30			$	26			$	22			$	78
1-Jan-12
Provision (credit) for unfunded credit losses		28				(12		)		(18		)		(2		)
Reserve for unfunded credit commitments, September 30, 2012		58				14				4				76
Allowance for credit losses, September 30, 2012		$	905			$	598			$	635			$	2,138
Portion of ending allowance for loan losses:
Individually evaluated for impairment*		$	222			$	276			$	203			$	701
Collectively evaluated for impairment*		625				308				428				1,361
Total allowance for loan losses		$	847			$	584			$	631			$	2,062
Portion of loan portfolio ending balance:
Individually evaluated for impairment*		$	1,136			$	1,459			$	1,657			$	4,252
Collectively evaluated for impairment*		35,856				7,254				27,897				71,007
Total loans evaluated for impairment		$	36,992			$	8,713			$	29,554			$	75,259
_________
*As discussed above, prior period amounts have been reclassified to conform to the current period classification.
Credit Quality Indicators Excluding Loans Held For Sale	'
			30-Sep-13
			Pass				Special Mention				Substandard				Non-accrual				Total
											Accrual
			(In millions)
	Commercial and industrial		$	28,502			$	467			$	511			$	383			$	29,863
	Commercial real estate mortgage—owner-occupied		8,683				228				291				364				9,566
	Commercial real estate construction—owner-occupied		331				29				5				12				377
	Total commercial		$	37,516			$	724			$	807			$	759			$	39,806
	Commercial investor real estate mortgage		$	4,493			$	272			$	572			$	276			$	5,613
	Commercial investor real estate construction		1,215				39				32				31				1,317
	Total investor real estate		$	5,708			$	311			$	604			$	307			$	6,930
											Accrual				Non-accrual				Total
											(In millions)
	Residential first mortgage										$	12,689			$	167			$	12,856
	Home equity										11,228				121				11,349
	Indirect										2,889				—				2,889
	Consumer credit card										896				—				896
	Other consumer										1,166				—				1,166
	Total consumer										$	28,868			$	288			$	29,156
																			$	75,892
			December 31, 2012
			Pass				Special				Substandard				Non-accrual				Total
							Mention				Accrual
			(In millions)
	Commercial and industrial		$	25,225			$	560			$	480			$	409			$	26,674
	Commercial real estate mortgage—owner-occupied		8,976				240				440				439				10,095
	Commercial real estate construction—owner-occupied		278				3				7				14				302
	Total commercial		$	34,479			$	803			$	927			$	862			$	37,071
	Commercial investor real estate mortgage		$	5,089			$	435			$	827			$	457			$	6,808
	Commercial investor real estate construction		733				98				63				20				914
	Total investor real estate		$	5,822			$	533			$	890			$	477			$	7,722
											Accrual				Non-accrual				Total
											(In millions)
	Residential first mortgage										$	12,749			$	214			$	12,963
	Home equity										11,672				128				11,800
	Indirect										2,336				—				2,336
	Consumer credit card										906				—				906
	Other consumer										1,197				—				1,197
	Total consumer										$	28,860			$	342			$	29,202
																			$	73,995
Schedule Of Aging Analysis Of Days Past Due (DPD) For Each Portfolio Class	'
	The following tables include an aging analysis of days past due (DPD) for each portfolio segment and class as of September 30, 2013 and December 31, 2012:
			30-Sep-13
			Accrual Loans
			30-59 DPD				60-89 DPD				90+ DPD				Total				Total			Non-accrual			Total
															30+ DPD				Accrual
			(In millions)
	Commercial and industrial		$	18			$	13			$	6			$	37			$	29,480		$	383		$	29,863
	Commercial real estate		42				14				7				63				9,202			364			9,566
	mortgage—owner-occupied
	Commercial real estate construction—owner-occupied		1				—				—				1				365			12			377
	Total commercial		61				27				13				101				39,047			759			39,806
	Commercial investor real estate mortgage		62				56				15				133				5,337			276			5,613
	Commercial investor real estate construction		1				3				1				5				1,286			31			1,317
	Total investor real estate		63				59				16				138				6,623			307			6,930
	Residential first mortgage		124				70				246				440				12,689			167			12,856
	Home equity		89				42				72				203				11,228			121			11,349
	Indirect		31				8				4				43				2,889			—			2,889
	Consumer credit card		8				4				12				24				896			—			896
	Other consumer		15				5				4				24				1,166			—			1,166
	Total consumer		267				129				338				734				28,868			288			29,156
			$	391			$	215			$	367			$	973			$	74,538		$	1,354		$	75,892
			December 31, 2012
			Accrual Loans
			30-59 DPD				60-89 DPD				90+ DPD				Total				Total			Non-accrual			Total
															30+ DPD				Accrual
			(In millions)
	Commercial and industrial		$	27			$	23			$	19			$	69			$	26,265		$	409		$	26,674
	Commercial real estate		49				28				6				83				9,656			439			10,095
	mortgage—owner-occupied
	Commercial real estate construction—owner-occupied		—				—				—				—				288			14			302
	Total commercial		76				51				25				152				36,209			862			37,071
	Commercial investor real estate mortgage		38				42				11				91				6,351			457			6,808
	Commercial investor real estate construction		1				1				—				2				894			20			914
	Total investor real estate		39				43				11				93				7,245			477			7,722
	Residential first mortgage		149				86				307				542				12,749			214			12,963
	Home equity		100				53				87				240				11,672			128			11,800
	Indirect		31				9				3				43				2,336			—			2,336
	Consumer credit card		7				7				14				28				906			—			906
	Other consumer		19				5				3				27				1,197			—			1,197
	Total consumer		306				160				414				880				28,860			342			29,202
			$	421			$	254			$	450			$	1,125			$	72,314		$	1,681		$	73,995
Schedule Of Impaired Loans	'
		Non-accrual Impaired Loans As of September 30, 2013
										Book Value(3)
		Unpaid				Charge-offs				Total				Impaired				Impaired			Related			Coverage %(4)
		Principal				and Payments				Impaired				Loans on				Loans on			Allowance
		Balance(1)				Applied(2)				Loans on				Non-accrual				Non-accrual			for Loan
										Non-accrual				Status with				Status with			Losses
										Status				No Related				Related
														Allowance				Allowance
		(Dollars in millions)
	Commercial and industrial	$	446			$	84			$	362			$	49			$	313		$	94		39.9	%
	Commercial real estate mortgage—owner-occupied	412				48				364				46				318			108			37.9
	Commercial real estate construction—owner-occupied	13				1				12				—				12			6			53.8
	Total commercial	871				133				738				95				643			208			39.2
	Commercial investor real estate mortgage	358				82				276				24				252			75			43.9
	Commercial investor real estate construction	37				6				31				—				31			10			43.2
	Total investor real estate	395				88				307				24				283			85			43.8
	Residential first mortgage	133				44				89				—				89			11			41.4
	Home equity	18				—				18				—				18			1			5.6
	Total consumer	151				44				107				—				107			12			37.1
	Total	$	1,417			$	265			$	1,152			$	119			$	1,033		$	305		40.2	%
			Accruing Impaired Loans As of September 30, 2013
			Unpaid				Charge-offs				Book Value(3)				Related				Coverage %(4)
			Principal				and Payments								Allowance for
			Balance(1)				Applied(2)								Loan Losses
			(Dollars in millions)
	Commercial and industrial		$	258			$	5			$	253			$	35			15.5	%
	Commercial real estate mortgage—owner-occupied		172				4				168				17				12.2
	Commercial real estate construction—owner-occupied		26				1				25				1				7.7
	Total commercial		456				10				446				53				13.8
	Commercial investor real estate mortgage		638				13				625				66				12.4
	Commercial investor real estate construction		74				—				74				8				10.8
	Total investor real estate		712				13				699				74				12.2
	Residential first mortgage		1,086				15				1,071				124				12.8
	Home equity		379				—				379				26				6.9
	Indirect		1				—				1				—				—
	Consumer credit card		2				—				2				—				—
	Other consumer		29				—				29				—				—
	Total consumer		1,497				15				1,482				150				11
	Total		$	2,665			$	38			$	2,627			$	277			11.8	%
		Total Impaired Loans As of September 30, 2013
										Book Value(3)
		Unpaid				Charge-offs				Total				Impaired				Impaired			Related			Coverage %(4)
		Principal				and Payments				Impaired				Loans with No				Loans with			Allowance
		Balance(1)				Applied(2)				Loans				Related				Related			for Loan
														Allowance				Allowance			Losses
		(Dollars in millions)
	Commercial and industrial	$	704			$	89			$	615			$	49			$	566		$	129		31	%
	Commercial real estate mortgage—owner-	584				52				532				46				486			125			30.3
	occupied
	Commercial real estate construction—owner-occupied	39				2				37				—				37			7			23.1
	Total commercial	1,327				143				1,184				95				1,089			261			30.4
	Commercial investor real estate mortgage	996				95				901				24				877			141			23.7
	Commercial investor real estate construction	111				6				105				—				105			18			21.6
	Total investor real estate	1,107				101				1,006				24				982			159			23.5
	Residential first mortgage	1,219				59				1,160				—				1,160			135			15.9
	Home equity	397				—				397				—				397			27			6.8
	Indirect	1				—				1				—				1			—			—
	Consumer credit card	2				—				2				—				2			—			—
	Other consumer	29				—				29				—				29			—			—
	Total consumer	1,648				59				1,589				—				1,589			162			13.4
	Total impaired loans	$	4,082			$	303			$	3,779			$	119			$	3,660		$	582		21.7	%
	_________
	-1	Unpaid principal balance represents the contractual obligation due from the customer and includes the net book value plus charge-offs and payments applied.
-2	Charge-offs and payments applied represents cumulative partial charge-offs taken, as well as interest payments received that have been applied against the outstanding principal balance.
-3	Book value represents the unpaid principal balance less charge-offs and payments applied; it is shown before any allowance for loan losses.
-4	Coverage % represents charge-offs and payments applied plus the related allowance as a percent of the unpaid principal balance.
	Non-accrual Impaired Loans As of December 31, 2012
									Book Value(3)
	Unpaid				Charge-offs				Total				Impaired				Impaired			Related			Coverage %(4)
	Principal				and Payments				Impaired				Loans on				Loans on			Allowance
	Balance(1)				Applied(2)				Loans on				Non-accrual				Non-accrual			for Loan
									Non-accrual				Status with				Status with			Losses
									Status				No Related				Related
													Allowance				Allowance
	(Dollars in millions)
Commercial and industrial	$	467			$	62			$	405			$	63			$	342		$	128		40.7	%
Commercial real estate mortgage—owner-occupied	503				64				439				44				395			148			42.1
Commercial real estate construction—owner-occupied	18				4				14				4				10			3			38.9
Total commercial	988				130				858				111				747			279			41.4
Commercial investor real estate mortgage	560				103				457				54				403			132			42
Commercial investor real estate construction	26				6				20				2				18			7			50
Total investor real estate	586				109				477				56				421			139			42.3
Residential first mortgage	152				55				97				—				97			13			44.7
Home equity	32				11				21				—				21			2			40.6
Total consumer	184				66				118				—				118			15			44
Total	$	1,758			$	305			$	1,453			$	167			$	1,286		$	433		42	%
		Accruing Impaired Loans As of December 31, 2012
		Unpaid				Charge-offs				Book Value(3)				Related				Coverage %(4)
		Principal				and Payments								Allowance for
		Balance(1)				Applied(2)								Loan Losses
		(Dollars in millions)
Commercial and industrial		$	299			$	7			$	292			$	42			16.4	%
Commercial real estate mortgage—owner-occupied		213				4				209				25				13.6
Commercial real estate construction—owner-occupied		1				—				1				—				—
Total commercial		513				11				502				67				15.2
Commercial investor real estate mortgage		782				10				772				97				13.7
Commercial investor real estate construction		107				—				107				16				15
Total investor real estate		889				10				879				113				13.8
Residential first mortgage		1,101				13				1,088				144				14.3
Home equity		411				5				406				36				10
Indirect		2				1				1				—				50
Other consumer		40				—				40				1				2.5
Total consumer		1,554				19				1,535				181				12.9
Total		$	2,956			$	40			$	2,916			$	361			13.6	%
	Total Impaired Loans As of December 31, 2012
									Book Value(3)
	Unpaid				Charge-offs				Total				Impaired				Impaired			Related			Coverage %(4)
	Principal				and Payments				Impaired				Loans with No				Loans with			Allowance for
	Balance(1)				Applied(2)				Loans				Related				Related			Loan Losses
													Allowance				Allowance
	(Dollars in millions)
Commercial and industrial	$	766			$	69			$	697			$	63			$	634		$	170		31.2	%
Commercial real estate mortgage—owner-	716				68				648				44				604			173			33.7
occupied
Commercial real estate construction—owner-occupied	19				4				15				4				11			3			36.8
Total commercial	1,501				141				1,360				111				1,249			346			32.4
Commercial investor real estate mortgage	1,342				113				1,229				54				1,175			229			25.5
Commercial investor real estate construction	133				6				127				2				125			23			21.8
Total investor real estate	1,475				119				1,356				56				1,300			252			25.2
Residential first mortgage	1,253				68				1,185				—				1,185			157			18
Home equity	443				16				427				—				427			38			12.2
Indirect	2				1				1				—				1			—			50
Other consumer	40				—				40				—				40			1			2.5
Total consumer	1,738				85				1,653				—				1,653			196			16.2
Total impaired loans	$	4,714			$	345			$	4,369			$	167			$	4,202		$	794		24.2	%
_________
-1	Unpaid principal balance represents the contractual obligation due from the customer and includes the net book value plus charge-offs and payments applied.
-2	Charge-offs and payments applied represents cumulative partial charge-offs taken, as well as interest payments received that have been applied against the outstanding principal balance.
-3	Book value represents the unpaid principal balance less charge-offs and payments applied; it is shown before any allowance for loan losses.
-4	Coverage % represents charge-offs and payments applied plus the related allowance as a percent of the unpaid principal balance.
Interest Income on Loans Modified in Troubled Debt Restructuring	'
			Three Months Ended September 30																Nine Months Ended September 30
			2013								2012								2013						2012
			Average				Interest				Average				Interest				Average			Interest			Average		Interest
			Balance				Income				Balance				Income				Balance			Income			Balance		Income
							Recognized								Recognized							Recognized					Recognized
			(In millions)
	Commercial and industrial		$	636			$	4			$	721			$	4			$	649		$	10		$	707	$	12
	Commercial real estate mortgage—owner-occupied		551				2				714				3				598			8			752		8
	Commercial real estate construction—owner-occupied		40				—				22				—				38			1			26		—
	Total commercial		1,227				6				1,457				7				1,285			19			1,485		20
	Commercial investor real estate mortgage		940				7				1,520				10				1,071			24			1,572		31
	Commercial investor real estate construction		108				1				178				2				121			5			230		5
	Total investor real estate		1,048				8				1,698				12				1,192			29			1,802		36
	Residential first mortgage		1,163				9				1,169				10				1,176			28			1,148		29
	Home equity		401				5				435				5				411			16			441		17
	Indirect		1				—				2				—				1			—			2		—
	Consumer credit card		2				—				—				—				1			—			—		—
	Other consumer		30				1				45				1				34			2			49		2
	Total consumer		1,597				15				1,651				16				1,623			46			1,640		48
	Total impaired loans		$	3,872			$	29			$	4,806			$	35			$	4,100		$	94		$	4,927	$	104
Schedule of loans by class modified in a TDR	'
			Three Months Ended September 30, 2013
									Financial Impact
									of Modifications
									Considered TDRs
			Number of		Recorded				Increase in
			Obligors		Investment				Allowance at
									Modification
					(Dollars in millions)
	Commercial and industrial		109		$	135			$	1
	Commercial real estate mortgage—owner-occupied		93		78				1
	Commercial real estate construction—owner-occupied		2		3				—
	Total commercial		204		216				2
	Commercial investor real estate mortgage		98		173				1
	Commercial investor real estate construction		21		25				—
	Total investor real estate		119		198				1
	Residential first mortgage		293		47				5
	Home equity		172		10				1
	Consumer credit card		57		1				—
	Indirect and other consumer		76		1				—
	Total consumer		598		59				6
			921		$	473			$	9
			Three Months Ended September 30, 2012
										Financial Impact
										of Modifications
										Considered TDRs
			Number of			Recorded				Increase in
			Obligors			Investment				Allowance at
										Modification
						(Dollars in millions)
	Commercial and industrial		148			$	223			$	1
	Commercial real estate mortgage—owner-occupied		95			91				1
	Commercial real estate construction—owner-occupied		—			—				—
	Total commercial		243			314				2
	Commercial investor real estate mortgage		138			312				2
	Commercial investor real estate construction		47			26				—
	Total investor real estate		185			338				2
	Residential first mortgage		355			75				10
	Home equity		222			14				1
	Indirect and other consumer		94			1				—
	Total consumer		671			90				11
			1,099			$	742			$	15
			Nine Months Ended September 30, 2013
									Financial Impact
									of Modifications
									Considered TDRs
			Number of		Recorded				Increase in
			Obligors		Investment				Allowance at
									Modification
					(Dollars in millions)
	Commercial and industrial		335		$	445			$	2
	Commercial real estate mortgage—owner-occupied		272		251				3
	Commercial real estate construction—owner-occupied		5		30				—
	Total commercial		612		726				5
	Commercial investor real estate mortgage		321		569				3
	Commercial investor real estate construction		64		77				—
	Total investor real estate		385		646				3
	Residential first mortgage		965		169				19
	Home equity		451		29				3
	Consumer credit card		202		3				—
	Indirect and other consumer		234		3				—
	Total consumer		1,852		204				22
			2,849		$	1,576			$	30
			Nine Months Ended September 30, 2012
								Financial Impact
								of Modifications
								Considered TDRs
		Number of		Recorded				Increase in
		Obligors		Investment				Allowance at
								Modification
				(Dollars in millions)
Commercial and industrial		507		$	559			$	3
Commercial real estate mortgage—owner-occupied		331		301				3
Commercial real estate construction—owner-occupied		7		6				—
Total commercial		845		866				6
Commercial investor real estate mortgage		485		1,049				8
Commercial investor real estate construction		176		102				1
Total investor real estate		661		1,151				9
Residential first mortgage		1,123		234				30
Home equity		808		58				4
Indirect and other consumer		396		7				—
Total consumer		2,327		299				34
		3,833		$	2,316			$	49
Loans Modified In Past Twelve Months Which Subsequently Defaulted	'
			Three Months Ended September 30								Nine Months Ended September 30
			2013				2012				2013				2012
			(In millions)
	Defaulted During the Period, Where Modified in a TDR Twelve Months Prior to Default
	Commercial and industrial		$	1			$	23			$	29			$	82
	Commercial real estate mortgage—owner-occupied		5				13				28				47
	Commercial real estate construction—owner-occupied		—				—				—				1
	Total commercial		6				36				57				130
	Commercial investor real estate mortgage		5				50				60				161
	Commercial investor real estate construction		19				2				24				21
	Total investor real estate		24				52				84				182
	Residential first mortgage		11				15				40				48
	Home equity		1				4				4				16
	Total consumer		12				19				44				64
			$	42			$	107			$	185			$	376

Servicing_of_Financial_Assets_

Servicing of Financial Assets (Tables)	9 Months Ended
	Sep. 30, 2013
Text Block [Abstract]	'
Analysis Of Mortgage Servicing Rights Under The Fair Value Measurement Method	'
	The table below presents an analysis of mortgage servicing rights under the fair value measurement method:
		Three Months Ended September 30						Nine Months Ended September 30
		2013			2012			2013			2012
		(In millions)
	Carrying value, beginning of period	$	276		$	179		$	191		$	182
	Additions	13			16			73			44
	Increase (decrease) in fair value:
	Due to change in valuation inputs or assumptions	—			(11		)	45			(28		)
	Economic amortization associated with borrower repayments	(8		)	(8		)	(28		)	(22		)
	Carrying value, end of period	$	281		$	176		$	281		$	176
Data And Assumptions Used In The Fair Value Calculation As Well As The Valuation's Sensitivity To Rate Fluctuations Related To Mortgage Servicing Rights	'
	Data and assumptions used in the fair value calculation, as well as the valuation’s sensitivity to rate fluctuations, related to mortgage servicing rights (excluding related derivative instruments) are as follows:
		30-Sep
		2013			2012
		(Dollars in millions)
	Unpaid principal balance	$	28,234		$	26,005
	Weighted-average prepayment speed (CPR; percentage)	9.4		%	20.1		%
	Estimated impact on fair value of a 10% increase	$	(12	)	$	(13	)
	Estimated impact on fair value of a 20% increase	$	(24	)	$	(23	)
	Option-adjusted spread (basis points)	1,014			1,035
	Estimated impact on fair value of a 10% increase	$	(10	)	$	(5	)
	Estimated impact on fair value of a 20% increase	$	(20	)	$	(10	)
	Weighted-average coupon interest rate	4.5		%	5		%
	Weighted-average remaining maturity (months)	279			277
	Weighted-average servicing fee (basis points)	27.7			28.3
Schedule Of Fees Resulting From The Servicing Of Mortgage Loans	'
	The following table presents servicing related fees, which includes contractually specified servicing fees, late fees and other ancillary income resulting from the servicing of mortgage loans:
		Three Months Ended September 30						Nine Months Ended September 30
		2013			2012			2013			2012
		(In millions)
	Servicing related fees and other ancillary income	$	22		$	21		$	64		$	63
Analysis Of Repurchase Liability Related To Mortgage Loans Sold With Representations And Warranty Provisions	'
	The table below presents an analysis of Regions’ repurchase liability related to mortgage loans sold with representations and warranty provisions:
		Three Months Ended September 30						Nine Months Ended September 30
		2013			2012			2013			2012
		(In millions)
	Beginning balance	$	40		$	37		$	40		$	32
	Additions	8			7			23			30
	Losses	(8		)	(6		)	(23		)	(24		)
	Ending balance	$	40		$	38		$	40		$	38

Goodwill_Tables

Goodwill (Tables)	9 Months Ended
	Sep. 30, 2013
Text Block [Abstract]	'
Schedule Of Goodwill By Segment	'
	Goodwill allocated to each reportable segment is presented as follows:
		30-Sep-13			December 31, 2012
		(In millions)
	Business Services	$	2,552		$	2,552
	Consumer Services	1,797			1,797
	Wealth Management	467			467
		$	4,816		$	4,816
Schedule Of Assumptions Used In Estimating Fair Value	'
	Listed in the table below are assumptions used in estimating the fair value of each reporting unit for the September 30, 2013 interim period. The table includes the discount rates used in the income approach, the market multipliers used in the market approaches, and the public company method control premium applied to each reporting unit.
	As of Third Quarter 2013	Business		Consumer			Wealth
		Services		Services			Management
	Discount rate used in income approach	12	%	12	%		12	%
	Public company method market multiplier(1)	1.2	x	1.2	x		16.9	x
	Transaction method market multiplier(2)	1.6	x	1.6	x		24.5	x
	_________
	-1	For the Business Services and Consumer Services reporting units, these multipliers are applied to tangible book value. For the Wealth Management reporting unit, this multiplier is applied to earnings. In addition to the multipliers, a 30 percent control premium was assumed for the Business Services reporting unit, a 40 percent control premium was assumed for the Consumer Services reporting unit and a 30 percent control premium was assumed for the Wealth Management reporting unit based on current market factors. Because the control premium considers potential revenue synergies and cost savings for similar financial services transactions, reporting units operating in businesses that have greater barriers to entry tend to have greater control premiums.
	-2	For the Business Services and Consumer Services reporting units, these multipliers are applied to tangible book value. For the Wealth Management reporting unit, this multiplier is applied to earnings.
	As of Fourth Quarter 2012	Business		Consumer			Wealth
		Services		Services			Management
	Discount rate used in income approach	14	%	13	%		13	%
	Public company method market multiplier(1)	1.2	x	1	x		14	x
	Transaction method market multiplier(2)	1.3	x	1.3	x		25.2	x
	_________
	-1	For the Business Services and Consumer Services reporting units, these multipliers are applied to tangible book value. For the Wealth Management reporting unit, this multiplier is applied to earnings. In addition to the multipliers, a 20 percent control premium was assumed for the Business Services reporting unit, a 40 percent control premium was assumed for the Consumer Services reporting unit and a 30 percent control premium was assumed for the Wealth Management reporting unit based on current market factors. Because the control premium considers potential revenue synergies and cost savings for similar financial services transactions, reporting units operating in businesses that have greater barriers to entry tend to have greater control premiums.
	-2	For the Business Services and Consumer Services reporting units, these multipliers are applied to tangible book value. For the Wealth Management reporting unit, this multiplier is applied to earnings.

Stockholders_Equity_and_Accumu1

Stockholders' Equity and Accumulated Other Comprehensive Income (Loss) (Tables)	9 Months Ended
	Sep. 30, 2013
Text Block [Abstract]	'
Schedule of Accumulated Other Comprehensive Income (Loss)	'
	Activity within the balances in accumulated other comprehensive income (loss) is shown in the following tables for the three and nine months ended September 30, 2013 and 2012.
		Three Months Ended September 30, 2013
		Unrealized losses on securities transferred to held to maturity			Unrealized			Unrealized			Defined			Accumulated
					gains (losses) on			gains (losses) on			benefit			other
					securities			derivative			pension			comprehensive
					available			instruments			plans and			income (loss),
					for			designated			other post			net of tax
					sale			as cash			employment
								flow hedges			benefits
		(In millions)
	Beginning of period	$	(68	)	$	—		$	35		$	(445	)	$	(478	)
	Net change	2			41			12			12			67
	End of period	$	(66	)	$	41		$	47		$	(433	)	$	(411	)
		Three Months Ended September 30, 2012
		Unrealized			Unrealized			Defined			Accumulated
		gains (losses) on			gains (losses) on			benefit			other
		securities			derivative			pension			comprehensive
		available			instruments			plans and			income (loss),
		for			designated			other post			net of tax
		sale			as cash			employment
					flow hedges			benefits
		(In millions)
	Beginning of period	$	394		$	110		$	(450	)	$	54
	Net change	143			(6		)	11			148
	End of period	$	537		$	104		$	(439	)	$	202
		Nine Months Ended September 30, 2013
		Unrealized losses on securities transferred to held to maturity			Unrealized			Unrealized			Defined			Accumulated
					gains (losses) on			gains (losses) on			benefit			other
					securities			derivative			pension			comprehensive
					available			instruments			plans and			income (loss),
					for			designated			other post			net of tax
					sale			as cash			employment
								flow hedges			benefits
		(In millions)
	Beginning of period	$	—		$	436		$	93		$	(464	)	$	65
	Net change	(66		)	(395		)	(46		)	31			(476		)
	End of period	$	(66	)	$	41		$	47		$	(433	)	$	(411	)
		Nine Months Ended September 30, 2012
		Unrealized			Unrealized			Defined			Accumulated
		gains (losses) on			gains (losses) on			benefit			other
		securities			derivative			pension			comprehensive
		available			instruments			plans and			income (loss),
		for			designated			other post			net of tax
		sale			as cash			employment
					flow hedges			benefits
		(In millions)
	Beginning of period	$	322		$	84		$	(475	)	$	(69	)
	Net change	215			20			36			271
	End of period	$	537		$	104		$	(439	)	$	202
Reclassification From Accumulated Other Comprehensive Income (Loss) [Table Text Block]	'
	The following table presents amounts reclassified out of accumulated other comprehensive income (loss) for the three and nine months ended September 30, 2013:
		Three Months Ended September 30, 2013			Nine Months Ended September 30, 2013
	Details about Accumulated Other Comprehensive Income (Loss) Components	Amount Reclassified from Accumulated Other Comprehensive Income (Loss)(1)			Amount Reclassified from Accumulated Other Comprehensive Income (Loss)(1)			Affected Line Item in the Consolidated Statements of Income
		(In millions)
	Unrealized losses on securities transferred to held to maturity:
		$	(4	)	$	(4	)	Net interest income
		2			2			Tax (expense) or benefit
		$	(2	)	$	(2	)	Net of tax
	Unrealized gains and losses on available-for-sale securities:
		$	3		$	26		Securities gains, net
		(1		)	(9		)	Tax (expense) or benefit
		$	2		$	17		Net of tax
	Gains and losses on cash flow hedges:
	Interest rate contracts	$	26		$	58		Net interest income
		(10		)	(22		)	Tax (expense) or benefit
		$	16		$	36		Net of tax
	Amortization of defined benefit pension items:
	Prior-service cost	$	—		$	—		(2)
	Actuarial gains/(losses)	(19		)	(52		)	(2)
		(19		)	(52		)	Total before tax
		7			19			Tax (expense) or benefit
		$	(12	)	$	(33	)	Net of tax
	Total reclassifications for the period	$	4		$	18		Net of tax
	_________
	(1) Amounts in parentheses indicate reductions to net income.
	(2) These accumulated other comprehensive income (loss) components are included in the computation of net periodic pension cost and are included in salaries and employee benefits on the consolidated statements of income (see Note 11 for additional details).

Earnings_Loss_per_Common_Share1

Earnings (Loss) per Common Share (Tables)	9 Months Ended
	Sep. 30, 2013
Text Block [Abstract]	'
Computation of Basic and Diluted Earnings (Loss) Per Common Share	'
	The following table sets forth the computation of basic earnings (loss) per common share and diluted earnings (loss) per common share:
		Three Months Ended September 30						Nine Months Ended September 30
		2013			2012			2013			2012
		(In millions, except per share amounts)
	Numerator:
	Income from continuing operations	$	293		$	312		$	894		$	902
	Preferred stock dividends and accretion	(8		)	—			(24		)	(125		)
	Income from continuing operations available to common shareholders	285			312			870			777
	Income (loss) from discontinued operations, net of tax	—			(11		)	1			(47		)
	Net income available to common shareholders	$	285		$	301		$	871		$	730
	Denominator:
	Weighted-average common shares outstanding—basic	1,388			1,414			1,401			1,370
	Potential common shares	17			9			14			5
	Weighted-average common shares outstanding—diluted	1,405			1,423			1,415			1,375
	Earnings per common share from continuing operations(1):
	Basic	$	0.21		$	0.22		$	0.62		$	0.57
	Diluted	0.2			0.22			0.61			0.57
	Earnings (loss) per common share from discontinued operations(1):
	Basic	(0.00		)	(0.01		)	0			(0.04		)
	Diluted	(0.00		)	(0.01		)	0			(0.04		)
	Earnings per common share(1):
	Basic	0.21			0.21			0.62			0.53
	Diluted	0.2			0.21			0.62			0.53
	________
	-1	Certain per share amounts may not appear to reconcile due to rounding.

ShareBased_Payments_Tables

Share-Based Payments (Tables)	9 Months Ended
	Sep. 30, 2013
Text Block [Abstract]	'
Summary Of Activity Related To Stock Options	'
	The following table summarizes the activity related to stock options during the first nine months of 2013 and 2012:
		Nine Months Ended September 30
		2013				2012
		Number of		Weighted-Average		Number of		Weighted-Average
		Options		Exercise		Options		Exercise
				Price				Price
	Outstanding at beginning of period	38,258,204		$	23.09	46,351,349		$	23.62
	Granted	—		—		—		—
	Exercised	(810,936	)	5.22		(338,182	)	4.07
	Canceled/Forfeited	(3,699,256	)	25.91		(5,911,118	)	25.6
	Outstanding at end of period	33,748,012		$	23.21	40,102,049		$	23.49
	Exercisable at end of period	33,277,791		$	23.45	37,108,726		$	24.83
Summary Of Restricted Stock Award And Unit Activity	'
	The following table summarizes the activity related to restricted and performance stock awards and units:
		Nine Months Ended September 30
		2013				2012
		Number of		Weighted-Average		Number of		Weighted-Average
		Shares		Grant Date Fair		Shares		Grant Date Fair
				Value				Value
	Non-vested at beginning of period	11,945,179		$	6.15	6,280,360		$	7.6
	Granted	6,327,865		8.04		8,426,987		5.86
	Vested	(1,481,659	)	6.75		(1,521,360	)	4.58
	Forfeited	(375,850	)	6.38		(671,288	)	4.15
	Non-vested at end of period	16,415,535		$	6.82	12,514,699		$	6.98

Pension_and_Other_Postretireme1

Pension and Other Postretirement Benefits (Tables)	9 Months Ended
	Sep. 30, 2013
Text Block [Abstract]	'
Components Of Net Periodic Pension Cost	'
	Net periodic pension cost, which is recorded in salaries and benefits on the consolidated statements of income, included the following components:
		Qualified Plan						Non-qualified Plans				Total
		Three Months Ended September 30
		2013			2012			2013		2012		2013			2012
		(In millions)
	Service cost	$	9		$	7		$	1	$	1	$	10		$	8
	Interest cost	21			22			2		2		23			24
	Expected return on plan assets	(33		)	(28		)	—		—		(33		)	(28		)
	Amortization of actuarial loss	18			18			1		—		19			18
	Amortization of prior service cost	—			—			—		—		—			—
	Net periodic pension cost	$	15		$	19		$	4	$	3	$	19		$	22
		Qualified Plan						Non-qualified Plans				Total
		Nine Months Ended September 30
		2013			2012			2013		2012		2013			2012
		(In millions)
	Service cost	$	28		$	28		$	3	$	2	$	31		$	30
	Interest cost	63			63			4		5		67			68
	Expected return on plan assets	(99		)	(85		)	—		—		(99		)	(85		)
	Amortization of actuarial loss	50			53			2		—		52			53
	Amortization of prior service cost	—			—			—		1		—			1
	Net periodic pension cost	$	42		$	59		$	9	$	8	$	51		$	67

Derivative_Financial_Instrumen1

Derivative Financial Instruments and Hedging Activities (Tables)	9 Months Ended
	Sep. 30, 2013
Text Block [Abstract]	'
Schedule Of Derivative Instruments Notional And Fair Values	'
	The following tables present the notional amount and estimated fair value of derivative instruments on a gross basis as of September 30, 2013 and December 31, 2012. Beginning in the third quarter of 2013, Regions began to include the value of accrued interest in the estimated fair value of derivatives designated as hedging relationships. Prior period amounts have been adjusted to conform to this presentation.
			30-Sep-13										December 31, 2012
			Notional			Estimated Fair Value							Notional				Estimated Fair Value
			Amount			Gain(1)			Loss(1)				Amount				Gain(1)		Loss(1)
			(In millions)
	Derivatives in fair value hedging relationships:
	Interest rate swaps		$	4,238		$	74		$	27			$	5,388			$	113	$	1
	Derivatives in cash flow hedging relationships:
	Interest rate swaps		5,650			20			55				1,000				2		—
	Total derivatives designated as hedging instruments		$	9,888		$	94		$	82			$	6,388			$	115	$	1
	Derivatives not designated as hedging instruments:
	Interest rate swaps		$	45,447		$	1,143		$	1,201			$	46,054			$	1,746	$	1,775
	Interest rate options		3,585			15			3				3,274				25		4
	Interest rate futures and forward commitments		18,267			7			23				43,908				10		13
	Other contracts		2,437			42			41				2,213				31		32
	Total derivatives not designated as hedging instruments		$	69,736		$	1,207		$	1,268			$	95,449			$	1,812	$	1,824
	Total derivatives		$	79,624		$	1,301		$	1,350			$	101,837			$	1,927	$	1,825
	_________
	-1	Derivatives in a gain position are recorded as other assets and derivatives in a loss position are recorded as other liabilities on the consolidated balance sheets.
Schedule Of Effect Of Derivative Instruments On Statements Of Operations	'
	The following tables present the effect of derivative instruments on the consolidated statements of income:
			Gain or (Loss) Recognized in Income on Derivatives						Location of Amounts Recognized in Income on Derivatives and Related Hedged Item		Gain or (Loss) Recognized in Income on Related Hedged Item
			Three Months Ended September 30								Three Months Ended September 30
			2013			2012					2013				2012
			(In millions)								(In millions)
	Fair Value Hedges:
	Interest rate swaps on:
	Debt/CDs		$	11		$	23		Interest expense		$	1			$	3
	Debt/CDs		7			(5		)	Other non-interest expense		(6		)		1
	Securities available for sale		(1		)	—			Interest expense		—				—
	Securities available for sale		2			—			Other non-interest expense		(2		)		—
	Total		$	19		$	18				$	(7	)		$	4
			Effective Portion(3)
			Gain or (Loss) Recognized in AOCI(1)						Location of Amounts Reclassified from AOCI into Income		(Gain) or Loss Reclassified from AOCI into Income(2)
			Three Months Ended September 30								Three Months Ended September 30
			2013			2012					2013				2012
			(In millions)								(In millions)
	Cash Flow Hedges:
	Interest rate swaps		$	10		$	(9	)	Interest income on loans		$	30			$	20
	Forward starting swaps		2			3			Interest expense on debt		(4		)		(4		)
	Total		$	12		$	(6	)			$	26			$	16
			Gain or (Loss) Recognized in Income on Derivatives						Location of Amounts Recognized in Income on Derivatives and Related Hedged Item		Gain or (Loss) Recognized in Income on Related Hedged Item
			Nine Months Ended								Nine Months Ended
			30-Sep								30-Sep
			2013			2012					2013				2012
			(In millions)								(In millions)
	Fair Value Hedges:
	Interest rate swaps on:
	Debt/CDs		$	47		$	81		Interest expense		$	6			$	9
	Debt/CDs		(65		)	(25		)	Other non-interest expense		58				19
	Securities available for sale		(2		)	—			Interest expense		—				—
	Securities available for sale		16			—			Other non-interest expense		(17		)		—
	Total		$	(4	)	$	56				$	47			$	28
			Effective Portion(3)
			Gain or (Loss) Recognized in AOCI(1)						Location of Amounts Reclassified from AOCI into Income		(Gain) or Loss Reclassified from AOCI into Income(2)
			Nine Months Ended								Nine Months Ended
			30-Sep								30-Sep
			2013			2012					2013				2012
			(In millions)								(In millions)
	Cash Flow Hedges:
	Interest rate swaps		$	(53	)	$	13		Interest income on loans		$	70			$	61
	Forward starting swaps		7			7			Interest expense on debt		(12		)		(11		)
	Total		$	(46	)	$	20				$	58			$	50
	____
	(1) After-tax
	(2) Pre-tax
	(3) All cash flow hedges were highly effective for all periods presented, and the change in fair value attributed to hedge ineffectiveness was not material.
Schedule Of Gains (Losses) Recognized Related To Derivatives Not Designated As Hedging Instruments	'
	The following table presents the location and amount of gain or (loss) recognized in income on derivatives not designated as hedging instruments in the consolidated statements of income for the three and nine months ended September 30, 2013 and 2012, respectively:
			Three Months Ended September 30						Nine Months Ended September 30
	Derivatives Not Designated as Hedging Instruments		2013			2012			2013				2012
			(In millions)
	Capital markets fee income (1):
	Interest rate swaps		$	5		$	10		$	17			$	21
	Interest rate options		—			—			2				(1		)
	Interest rate futures and forward commitments		—			—			1				(1		)
	Other contracts		1			2			10				7
	Total capital markets fee income		6			12			30				26
	Mortgage income:
	Interest rate swaps		1			10			(26		)		29
	Interest rate options		9			10			(10		)		27
	Interest rate futures and forward commitments		(59		)	(7		)	(28		)		6
	Total mortgage income		(49		)	13			(64		)		62
			$	(43	)	$	25		$	(34	)		$	88
	____
	(1) Capital markets fee income is included in Other income on the consolidated statements of income.
Schedule Of Gross Derivative Positions, Including Collateral Posted or Received	'
	The following table presents the Company's gross derivative positions, including collateral posted or received, as of September 30, 2013 and December 31, 2012. Beginning in the third quarter of 2013, Regions began including the total fair value of all derivatives in the following table and separately reporting amounts subject to and not subject to offsetting. Prior period amounts have been adjusted to conform to this presentation.
			Offsetting Derivative Assets						Offsetting Derivative Liabilities
			30-Sep-13			December 31, 2012			30-Sep-13				December 31, 2012
			(In millions)
	Gross amounts subject to offsetting		$	1,245		$	1,900		$	1,318			$	1,820
	Gross amounts not subject to offsetting		56			27			32				5
	Gross amounts recognized		1,301			1,927			1,350				1,825
	Gross amounts offset in the consolidated balance sheets(1)		793			1,095			1,285				1,095
	Net amounts presented in the consolidated balance sheets		508			832			65				730
	Gross amounts not offset in the consolidated balance sheets:
	Financial instruments		10			11			—				—
	Cash collateral received/posted(1)		—			88			47				678
	Net amounts		$	498		$	733		$	18			$	52
	_________
	-1	Cash collateral totals are for netting counterparties only. In 2013, Regions began netting cash collateral received and posted against the net derivative asset or liability. At September 30, 2013, gross amounts of derivative assets and liabilities offset in the consolidated balance sheets presented above include cash collateral received of $52 million and cash collateral posted of $544 million, respectively. The cash collateral posted does not include the additional collateral posted in the form of an independent amount of $62 million. At December 31, 2012, cash collateral received and posted was not offset in the consolidated balance sheets. At December 31, 2012, the gross amounts of derivative assets and liabilities not offset in the consolidated balance sheets presented above include cash collateral received of $55 million and cash collateral posted of $827 million, respectively. The cash collateral posted includes the additional collateral posted in the form of an independent amount of $185 million.

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2013
Text Block [Abstract]	'
Schedule Of Assets And Liabilities At Fair Value Measured On A Recurring Basis And Non-Recurring Basis	'
	The following tables present assets and liabilities measured at estimated fair value on a recurring basis and non-recurring basis as of September 30, 2013 and December 31, 2012. Beginning in the third quarter of 2013, Regions began to include the value of accrued interest in the estimated fair value of derivatives designated as hedging relationships. Prior period amounts have been adjusted to conform to this presentation.
		30-Sep-13														December 31, 2012
		Level 1			Level 2				Level 3			Total				Level 1				Level 2		Level 3			Total
												Estimated Fair Value													Estimated Fair Value
		(In millions)
	Recurring fair value measurements
	Trading account securities	$	119		$	—			$	—		$	119			$	116			$	—	$	—		$	116
	Securities available for sale:
	U.S. Treasury securities	$	52		$	—			$	—		$	52			$	52			$	—	$	—		$	52
	Federal agency securities	—			99				—			99				—				553		—			553
	Obligations of states and political subdivisions	—			5				—			5				—				9		—			9
	Mortgage-backed securities:
	Residential agency	—			15,905				—			15,905				—				21,277		—			21,277
	Residential non-agency	—			—				10			10				—				—		13			13
	Commercial agency	—			855				—			855				—				725		—			725
	Commercial non-agency	—			1,193				—			1,193				—				1,098		—			1,098
	Other debt securities	—			2,812				2			2,814				—				2,833		2			2,835
	Equity securities(1)	135			—				—			135				125				—		—			125
	Total securities available for sale	$	187		$	20,869			$	12		$	21,068			$	177			$	26,495	$	15		$	26,687
	Mortgage loans held for sale	$	—		$	611			$	—		$	611			$	—			$	1,282	$	—		$	1,282
	Mortgage servicing rights	$	—		$	—			$	281		$	281			$	—			$	—	$	191		$	191
	Derivative assets:
	Interest rate swaps	$	—		$	1,237			$	—		$	1,237			$	—			$	1,861	$	—		$	1,861
	Interest rate options	—			3				12			15				—				3		22			25
	Interest rate futures and forward commitments	—			7				—			7				—				10		—			10
	Other contracts	—			42				—			42				—				31		—			31
	Total derivative assets	$	—		$	1,289			$	12		$	1,301			$	—			$	1,905	$	22		$	1,927
	Derivative liabilities:
	Interest rate swaps	$	—		$	1,283			$	—		$	1,283			$	—			$	1,776	$	—		$	1,776
	Interest rate options	—			3				—			3				—				4		—			4
	Interest rate futures and forward commitments	—			23				—			23				—				13		—			13
	Other contracts	—			41				—			41				—				32		—			32
	Total derivative liabilities	$	—		$	1,350			$	—		$	1,350			$	—			$	1,825	$	—		$	1,825
	Nonrecurring fair value measurements
	Loans held for sale	$	—		$	—			$	29		$	29			$	—			$	—	$	51		$	51
	Foreclosed property and other real estate	—			60				21			81				—				41		40			81
	_________
	(1) Excludes Federal Reserve Bank and Federal Home Loan Bank Stock totaling $495 million and $67 million at September 30, 2013 and $484 million and $73 million at December 31, 2012, respectively.
Rollforward For Assets And Liabilities Measured At Fair Value On A Recurring Basis With Level 3 Significant Unobservable Inputs	'
	The following tables illustrate a rollforward for all assets and liabilities measured at fair value on a recurring basis using significant unobservable inputs (Level 3) for the three and nine months ended September 30, 2013 and 2012, respectively. The tables do not reflect the change in fair value attributable to any related economic hedges the Company used to mitigate the interest rate risk associated with these assets and liabilities. The net changes in realized gains (losses) included in earnings related to Level 3 assets and liabilities held at September 30, 2013 and 2012 are not material.
		Three Months Ended September 30, 2013
					Total Realized /
					Unrealized
					Gains or Losses
		Opening Balance July 1, 2013			Included			Included			Purchases		Sales		Issuances			Settlements			Transfers	Transfers		Closing
					in			in Other													into	out of		Balance
					Earnings			Compre-													Level 3	Level 3		September 30,
								hensive																2013
								Income
								(Loss)
		(In millions)
	Level 3 Instruments Only
	Securities available for sale:
	Residential non-agency MBS	$	11		—			—			—		—		—			(1	)		—	—		$	10
	Other debt securities	2			—			—			—		—		—			—			—	—		2
	Total securities available for sale	$	13		—			—			—		—		—			(1	)		—	—		$	12
	Mortgage servicing rights	$	276		(9	)	(a)	—			14		—		—			—			—	—		$	281
	Total interest rate options derivatives, net	$	2		24		(a)	—			—		—		—			(14	)		—	—		$	12
	_________
	(a)	Included in mortgage income.
		Three Months Ended September 30, 2012
					Total Realized /
					Unrealized
					Gains or Losses
		Opening Balance July 1, 2012			Included			Included			Purchases		Sales		Issuances			Settlements			Transfers	Transfers		Closing
					in			in Other													into	out of		Balance
					Earnings			Compre-													Level 3	Level 3		September 30,
								hensive																2012
								Income
								(Loss)
		(In millions)
	Level 3 Instruments Only
	Securities available for sale:
	Residential non-agency MBS	$	14		—			—			—		—		—			(1	)		—	—		$	13
	Commercial non-agency MBS	—			—			1			103		—		—			—			—	—		104
	Other debt securities	2			—			—			—		—		—			—			—	—		2
	Total securities available for sale	$	16		—			1			103		—		—			(1	)		—	—		$	119
	Mortgage servicing rights	$	179		(19	)	(a)	—			16		—		—			—			—	—		$	176
	Total interest rate options derivatives, net	$	30		82		(a)	—			—		—		—			(71	)		—	—		$	41
	_________
	(a) Included in mortgage income.
		Nine Months Ended September 30, 2013
		Opening			Total Realized /						Purchases		Sales		Issuances			Settlements			Transfers	Transfers		Closing
		Balance			Unrealized																into	out of		Balance
		January 1,			Gains or Losses																Level 3	Level 3		September 30,
		2013			Included			Included																2013
					in Earnings			in Other
								Compre-
								hensive
								Income
								(Loss)
		(In millions)
	Level 3 Instruments Only
	Securities available for sale:
	Residential non-agency MBS	$	13		—			—			—		—		—			(3	)		—	—		$	10
	Other debt securities	2			—			—			—		—		—			—			—	—		2
	Total securities available for sale	$	15		—			—			—		—		—			(3	)		—	—		$	12
	Mortgage servicing rights	$	191		17		(a)	—			73		—		—			—			—	—		$	281
	Total interest rate options derivatives, net	$	22		65		(a)	—			—		—		—			(75	)		—	—		$	12
	_________
	(a)	Included in mortgage income.
		Nine Months Ended September 30, 2012
				Total Realized /
				Unrealized Gains
				or Losses
	Opening			Included			Included			Purchases		Sales		Issuances			Settlements			Transfers	Transfers		Disposition of Morgan Keegan			Closing Balance September 30, 2012
	Balance			in			in Other													into	out of
	January 1,			Earnings			Compre-													Level 3	Level 3
	2012						hensive
							Income
							(Loss)
	(In millions)
Level 3 Instruments Only
Trading account assets (c):
Obligations of states and political subdivisions	$	139		(3	)		—			4		—		—			(16	)		—	—		(124	)		$	—
Commercial agency MBS	51			2			—			368		—		—			(317	)		—	—		(104	)		—
Other securities	1			4			—			2,248		—		—			(2,240	)		—	—		(13	)		—
Total trading account assets (d)	$	191		3		(a)	—			2,620		—		—			(2,573	)		—	—		(241	)		$	—
Securities available for sale:
Obligations of states and political subdivisions	$	20		—			(2	)		—		(16	)	—			(2	)		—	—		—			$	—
Residential non-agency MBS	16			—			—			—		—		—			(3	)		—	—		—			13
Commercial non-agency MBS	—			—			1			103		—		—			—			—	—		—			104
Other debt securities	—			—			—			—		—		—			—			3	(1	)	—			2
Total securities available for sale	$	36		—			(1	)		103		(16	)	—			(5	)		3	(1	)	—			$	119
Mortgage servicing rights	$	182		(50	)	(b)	—			44		—		—			—			—	—		—			$	176
Trading account liabilities:
Commercial agency MBS	$	5		—			—			37		—		—			—			—	—		(42	)		$	—
Other securities	2			—			—			12		—		—			(4	)		—	—		(10	)		—
Total trading account liabilities (d)	$	7		—			—			49		—		—			(4	)		—	—		(52	)		$	—
Total interest rate options derivatives, net	$	13		193		(b)	—			—		—		—			(165	)		—	—		—			$	41
_________
(a)	Included in discontinued operations, on a net basis.
(b)	Included in mortgage income.
(c)	Income from trading account assets primarily represents gains/(losses) on disposition, which inherently includes commissions on security transactions during the period.
(d)	All amounts related to trading account assets and trading account liabilities are related to Morgan Keegan (see Note 2 for discussion of sale of Morgan Keegan).
Schedule Of Fair Value Adjustments Related To Non-Recurring Fair Value Measurements	'
	The following table presents the fair value adjustments related to non-recurring fair value measurements:
		Three Months Ended September 30							Nine Months Ended September 30
		2013			2012				2013			2012
		(In millions)
	Loans held for sale	$	(16	)	$	(54	)		$	(58	)	$	(155	)
	Foreclosed property and other real estate	(8		)	(18		)		(27		)	(56		)
Summary Of Quantitative Information About Level 3 Measurements	'
	The following tables present detailed information regarding assets and liabilities measured at fair value using significant unobservable inputs (Level 3) as of September 30, 2013 and December 31, 2012. The tables include the valuation techniques and the significant unobservable inputs utilized. The range of each significant unobservable input as well as the weighted average within the range utilized at September 30, 2013 and December 31, 2012 are included. Following the tables are a description of the valuation technique and the sensitivity of the technique to changes in the significant unobservable input.
		30-Sep-13
		Level 3		Valuation	Unobservable		Quantitative Range of
		Estimated Fair Value at		Technique	Input(s)		Unobservable Inputs and
		September 30, 2013					(Weighted-Average)
		(Dollars in millions)
	Recurring fair value measurements:
	Securities available for sale:
	Residential non-agency MBS	$10		Discounted cash flow	Spread to LIBOR		5.3% -69.8% (15.0%)
					Weighted-average prepayment speed (CPR; percentage)		9.1% -12.4% (10.8%)
					Probability of default		1.30%
					Loss severity		39.40%
	Other debt securities	$2		Market comparable	Evaluated quote on same issuer/comparable bond		98.6% -100.0% (99.5%)
					Comparability adjustments		1.40%
	Mortgage servicing rights(a)	$281		Discounted cash flow	Weighted-average prepayment speed (CPR; percentage)		7.3% -24.8% (9.4%)
					Option-adjusted spread (percentage)		7.4% -23.6% (10.1%)
	Derivative assets:
	Interest rate options	$12		Discounted cash flow	Weighted-average prepayment speed (CPR; percentage)		7.3% -24.8% (9.4%)
					Option-adjusted spread (percentage)		7.4% -23.6% (10.1%)
					Pull-through		10.1% -99.2% (78.4%)
	Nonrecurring fair value measurements:
	Loans held for sale	$29		Multiple data points, including discount to appraised value of collateral based on recent market activity for sales of similar loans	Appraisal comparability adjustment (discount)		2.0% -98.0% (49.4%)
	Foreclosed property and other real estate	$21		Discount to appraised value of property based on recent market activity for sales of similar properties	Appraisal comparability adjustment (discount)		30.0%-100.0% (34.7%)
	_________
	(a)	See Note 5 for additional disclosures related to assumptions used in the fair value calculation for mortgage servicing rights.
		31-Dec-12
		Level 3		Valuation	Unobservable		Quantitative Range of
		Estimated Fair Value at		Technique	Input(s)		Unobservable Inputs and
		December 31, 2012					(Weighted-Average)
		(Dollars in millions)
	Recurring fair value measurements:
	Securities available for sale:
	Residential non-agency MBS	$13		Discounted cash flow	Spread to LIBOR		5.4% -69.9% (16.9%)
					Weighted-average prepayment speed (CPR; percentage)		7.6% -30.3% (12.2%)
					Probability of default		0.2% - 1.2% (1.0%)
					Loss severity		39.3% -100.0% (48.1%)
	Other debt securities	$2		Market comparable	Evaluated quote on same issuer/comparable bond		99.1% -100.0% (99.6%)
					Comparability adjustments		1.00%
	Mortgage servicing rights(a)	$191		Discounted cash flow	Weighted-average prepayment speed (CPR; percentage)		4.7% -25.9% (17.6%)
					Option-adjusted spread (percentage)		1.0% -23.6% (7.5%)
	Derivative assets:
	Interest rate options	$22		Discounted cash flow	Weighted-average prepayment speed (CPR; percentage)		4.7% -25.9% (17.6%)
					Option-adjusted spread (percentage)		1.0% -23.6% (7.5%)
					Pull-through		55.7% -98.8% (76.9%)
	Nonrecurring fair value measurements:
	Loans held for sale	$51		Multiple data points, including discount to appraised value of collateral based on recent market activity for sales of similar loans	Appraisal comparability adjustment (discount)		8.0% -94.0% (46.3%)
	Foreclosed property and other real estate	$40		Discount to appraised value of property based on recent market activity for sales of similar properties	Appraisal comparability adjustment (discount)		35.0% -100.0% (36.2%)
	_________
	(a) See Note 7 to the consolidated financial statements of the 2012 Annual Report on Form 10-K for additional disclosures related to assumptions used in the fair value calculation for mortgage servicing rights.
Summary Of Difference Between Aggregate Fair Value And Aggregate Unpaid Principal Balance For Mortgage Loans Held For Sale Measured At Fair Value	'
	The following table summarizes the difference between the aggregate fair value and the aggregate unpaid principal balance for mortgage loans held for sale measured at fair value:
		30-Sep-13										December 31, 2012
		Aggregate			Aggregate				Aggregate Fair			Aggregate			Aggregate				Aggregate Fair
		Fair Value			Unpaid				Value Less			Fair Value			Unpaid				Value Less
					Principal				Aggregate						Principal				Aggregate
									Unpaid										Unpaid
									Principal										Principal
		(In millions)
	Mortgage loans held for sale, at fair value	$	611		$	589			$	22		$	1,282		$	1,235			$	47
Summary Of Net Gains (Losses) From Changes In Fair Value	'
		Mortgage loans held for sale, at fair value
		Three Months Ended September 30							Nine Months Ended September 30
		2013			2012				2013			2012
		(In millions)
	Net gains (losses) resulting from changes in fair value	$	38		$	19			$	(24	)	$	31
Schedule Of Carrying Amounts And Estimated Fair Values Of Financial Instruments	'
	The carrying amounts and estimated fair values, as well as the level within the fair value hierarchy, of the Company’s financial instruments as of September 30, 2013 are as follows:
		30-Sep-13
		Carrying			Estimated				Level 1			Level 2			Level 3
		Amount			Fair
					Value(1)
		(In millions)
	Financial assets:
	Cash and cash equivalents	$	3,859		$	3,859			$	3,859		$	—		$	—
	Trading account securities	119			119				119			—			—
	Securities held to maturity	2,388			2,385				2			2,383			—
	Securities available for sale	21,630			21,630				187			21,431			12
	Loans held for sale	673			673				—			611			62
	Loans (excluding leases), net of unearned income and allowance for loan losses(2)(3)	72,574			67,029				—			—			67,029
	Other interest-earning assets	105			105				—			105			—
	Derivative assets	1,301			1,301				—			1,289			12
	Financial liabilities:
	Derivative liabilities	1,350			1,350				—			1,350			—
	Deposits	92,321			92,325				—			92,325			—
	Short-term borrowings	1,773			1,773				—			1,773			—
	Long-term borrowings	4,838			5,072				886			—			4,186
	Loan commitments and letters of credit	113			618				—			—			618
	Indemnification obligation	244			217				—			—			217
	_________
	-1	Estimated fair values are consistent with an exit price concept. The assumptions used to estimate the fair values are intended to approximate those that a market participant would use in a hypothetical orderly transaction. In estimating fair value, the Company makes adjustments for interest rates, market liquidity and credit spreads as appropriate.
	-2	The estimated fair value of portfolio loans assumes sale of the loans to a third-party financial investor. Accordingly, the value to the Company if the loans were held to maturity is not reflected in the fair value estimate. In the current whole loan market, financial investors are generally requiring a higher rate of return than the return inherent in loans if held to maturity. The fair value discount at September 30, 2013 was $5.5 billion or 7.6 percent.
	-3	Excluded from this table is the lease carrying amount of $1.8 billion at September 30, 2013.
	The carrying amounts and estimated fair values, as well as the level within the fair value hierarchy, of the Company's financial instruments as of December 31, 2012 are as follows:
		December 31, 2012
		Carrying			Estimated				Level 1			Level 2			Level 3
		Amount			Fair
					Value(1)
		(In millions)
	Financial assets:
	Cash and cash equivalents	$	5,489		$	5,489			$	5,489		$	—		$	—
	Trading account securities	116			116				116			—			—
	Securities held to maturity	10			11				2			9			—
	Securities available for sale	27,244			27,244				177			27,052			15
	Loans held for sale	1,383			1,383				—			1,282			101
	Loans (excluding leases), net of unearned income and allowance for loan losses(2)(3)	70,574			63,961				—			—			63,961
	Other interest-earning assets	900			900				—			900			—
	Derivative assets	1,915			1,915				—			1,893			22
	Financial liabilities:
	Derivative liabilities	1,825			1,825				—			1,825			—
	Deposits	95,474			95,528				—			95,528			—
	Short-term borrowings	1,574			1,574				—			1,574			—
	Long-term borrowings	5,861			6,138				1,037			—			5,101
	Loan commitments and letters of credit	121			667				—			—			667
	Indemnification obligation	345			329				—			—			329
	_________
	-1	Estimated fair values are consistent with an exit price concept. The assumptions used to estimate the fair values are intended to approximate those that a market participant would use in a hypothetical orderly transaction. In estimating fair value, the Company makes adjustments for interest rates, market liquidity and credit spreads as appropriate.
	-2	The estimated fair value of portfolio loans assumes sale of the loans to a third-party financial investor. Accordingly, the value to the Company if the loans were held to maturity is not reflected in the fair value estimate. In the current whole loan market, financial investors are generally requiring a higher rate of return than the return inherent in loans if held to maturity. The fair value discount at December 31, 2012 was $6.6 billion or 9.4 percent.
	-3	Excluded from this table is the lease carrying amount of $1.5 billion at December 31, 2012.

Business_Segment_Information_T

Business Segment Information (Tables)	9 Months Ended
	Sep. 30, 2013
Text Block [Abstract]	'
Schedule Of Financial Information By Reportable Segment	'
	The following tables present financial information for each reportable segment for the period indicated.
		Three Months Ended September 30, 2013
		Business		Consumer		Wealth		Other			Continuing		Discontinued			Consolidated
		Services		Services		Management					Operations		Operations
		(In millions)
	Net interest income (loss)	$	472	$	460	$	44	$	(152	)	$	824	$	—		$	824
	Provision (credit) for loan losses	40		68		6		(96		)	18		—			18
	Non-interest income	114		269		111		1			495		—			495
	Non-interest expense	254		496		114		20			884		1			885
	Income (loss) before income taxes	292		165		35		(75		)	417		(1		)	416
	Income tax expense (benefit)	111		63		14		(64		)	124		(1		)	123
	Net income (loss)	$	181	$	102	$	21	$	(11	)	$	293	$	—		$	293
	Average assets	$	52,597	$	28,972	$	3,002	$	32,346		$	116,917	$	—		$	116,917
		Three Months Ended September 30, 2012
		Business		Consumer		Wealth		Other			Continuing		Discontinued			Consolidated
		Services		Services		Management					Operations		Operations
		(In millions)
	Net interest income (loss)	$	495	$	464	$	48	$	(190	)	$	817	$	—		$	817
	Provision (credit) for loan losses	144		108		10		(229		)	33		—			33
	Non-interest income	116		314		82		21			533		1			534
	Non-interest expense	224		505		106		34			869		20			889
	Income (loss) before income taxes	243		165		14		26			448		(19		)	429
	Income tax expense (benefit)	91		62		6		(23		)	136		(8		)	128
	Net income (loss)	$	152	$	103	$	8	$	49		$	312	$	(11	)	$	301
	Average assets	$	48,664	$	29,652	$	3,253	$	39,962		$	121,531	$	30		$	121,561
		Nine Months Ended September 30, 2013
		Business		Consumer		Wealth		Other			Continuing		Discontinued			Consolidated
		Services		Services		Management					Operations		Operations
		(In millions)
	Net interest income (loss)	$	1,395	$	1,384	$	133	$	(482	)	$	2,430	$	—		$	2,430
	Provision (credit) for loan losses	205		215		18		(379		)	59		—			59
	Non-interest income	343		822		289		39			1,493		—			1,493
	Non-interest expense	723		1,441		329		117			2,610		(1		)	2,609
	Income (loss) before income taxes	810		550		75		(181		)	1,254		1			1,255
	Income tax expense (benefit)	308		209		29		(186		)	360		—			360
	Net income	$	502	$	341	$	46	$	5		$	894	$	1		$	895
	Average assets	$	49,108	$	29,008	$	3,039	$	36,933		$	118,088	$	—		$	118,088
		Nine Months Ended September 30, 2012
		Business		Consumer		Wealth		Other			Continuing		Discontinued			Consolidated
		Services		Services		Management					Operations		Operations
		(In millions)
	Net interest income (loss)	$	1,507	$	1,386	$	144	$	(555	)	$	2,482	$	7		$	2,489
	Provision (credit) for loan losses	469		365		25		(683		)	176		—			176
	Non-interest income	353		906		253		52			1,564		256			1,820
	Non-interest expense	694		1,510		319		101			2,624		343			2,967
	Income (loss) before income taxes	697		417		53		79			1,246		(80		)	1,166
	Income tax expense (benefit)	264		158		21		(99		)	344		(33		)	311
	Net income (loss)	$	433	$	259	$	32	$	178		$	902	$	(47	)	$	855
	Average assets	$	48,971	$	29,784	$	3,481	$	40,331		$	122,567	$	948		$	123,515

Commitments_and_Contingencies_

Commitments and Contingencies (Tables)	9 Months Ended
	Sep. 30, 2013
Text Block [Abstract]	'
Credit Risk Of Financial Instruments By Contractual Amounts	'
	Credit risk associated with these instruments is represented by the contractual amounts indicated in the following table:
		September 30, 2013		December 31, 2012
		(In millions)
	Unused commitments to extend credit	$	40,642	$	38,160
	Standby letters of credit	1,651		1,872
	Commercial letters of credit	50		27
	Liabilities associated with standby letters of credit	38		37
	Assets associated with standby letters of credit	38		37
	Reserve for unfunded credit commitments	74		83

Discontinued_Operations_Detail

Discontinued Operations (Details) (USD $)	3 Months Ended				9 Months Ended
In Millions, except Per Share data, unless otherwise specified	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2013		Sep. 30, 2012
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]	'		'		'		'
Interest expense	$87		$147		$299		$473
Net interest income	824		817		2,430		2,482
Non-interest income:	'		'		'		'
Gain on sale	'		'		0		-16
Other	139		123		396		377
Total non-interest income	495		533		1,493		1,564
Non-interest expense:	'		'		'		'
Salaries and employee benefits	455		449		1,354		1,325
Net occupancy expense	92		99		274		285
Furniture and equipment expense	71		65		209		196
Other	266		256		773		818
Total non-interest expense	884		869		2,610		2,624
Income (loss) from discontinued operations before income taxes	-1		-19		1		-80
Income tax benefit	-1		-8		0		-33
Income (loss) from discontinued operations, net of tax	0		-11		1		-47
Basic	$0	[1]	($0.01)	[1]	$0	[1]	($0.04)	[1]
Diluted	$0	[1]	($0.01)	[1]	$0	[1]	($0.04)	[1]
Discontinued Operation Or Asset Disposal [Member]	'		'		'		'
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]	'		'		'		'
Interest Income	0		0		0		8
Interest expense	0		0		0		1
Net interest income	0		0		0		7
Non-interest income:	'		'		'		'
Brokerage, investment banking and capital markets	0		0		0		233
Gain on sale	0		1		0		16
Other	0		0		0		7
Total non-interest income	0		1		0		256
Non-interest expense:	'		'		'		'
Salaries and employee benefits	0		0		0		171
Net occupancy expense	0		0		0		9
Furniture and equipment expense	0		0		0		8
Professional and legal expenses	3		19		-1		125
Other	-2		1		0		30
Total non-interest expense	1		20		-1		343
Income (loss) from discontinued operations before income taxes	-1		-19		1		-80
Income tax benefit	-1		-8		0		-33
Income (loss) from discontinued operations, net of tax	$0		($11)		$1		($47)
Basic	$0		($0.01)		$0		($0.04)
Diluted	$0		($0.01)		$0		($0.04)
[1]	Certain per share amounts may not appear to reconcile due to rounding.

Securities_Schedule_Of_Amortiz

Securities (Schedule Of Amortized Cost, Gross Unrealized Gains And Losses, And Estimated Fair Value Of Securities Available For Sale And Securities Held To Maturity) (Details) (USD $)	Sep. 30, 2013		Jun. 30, 2013		Dec. 31, 2012
In Millions, unless otherwise specified
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]	'		'		'
Amortized Cost - Securities available for sale	$21,565		'		$26,543
Gross Unrealized Gains - Securities available for sale	298		'		729
Gross Unrealized Losses - Securities available for sale	-233		'		-28
Available-for-sale securities, net carrying value	21,630		'		'
Estimated Fair Value - Securities available for sale	21,630		'		27,244
Held To Maturity Amortized Cost Basis	2,495		'		'
Held To Maturity Securities Gross Unrealized Gains	0	[1]	'		'
Held To Maturity Securities Gross Unrealized Losses	-107	[1]	111	[1]	'
Gross Unrealized Gains - Securities held to maturity	4		'		1
Held-to-maturity Securities, Unrecognized Holding Loss	-7		'		0
Estimated Fair Value - Securities held to maturity	2,385		'		11
Held-to-maturity Securities	2,388		'		10
US Treasury Securities [Member]	'		'		'
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]	'		'		'
Amortized Cost - Securities available for sale	51		'		50
Gross Unrealized Gains - Securities available for sale	1		'		2
Gross Unrealized Losses - Securities available for sale	0		'		0
Available-for-sale securities, net carrying value	52		'		'
Estimated Fair Value - Securities available for sale	52		'		52
Held To Maturity Amortized Cost Basis	2		'		'
Held To Maturity Securities Gross Unrealized Gains	0	[1]	'		'
Held To Maturity Securities Gross Unrealized Losses	0	[1]	'		'
Gross Unrealized Gains - Securities held to maturity	0		'		0
Held-to-maturity Securities, Unrecognized Holding Loss	0		'		0
Estimated Fair Value - Securities held to maturity	2		'		2
Held-to-maturity Securities	2		'		2
Federal Agency Securities [Member]	'		'		'
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]	'		'		'
Amortized Cost - Securities available for sale	98		'		550
Gross Unrealized Gains - Securities available for sale	1		'		4
Gross Unrealized Losses - Securities available for sale	0		'		-1
Available-for-sale securities, net carrying value	99		'		'
Estimated Fair Value - Securities available for sale	99		'		553
Held To Maturity Amortized Cost Basis	350		'		'
Held To Maturity Securities Gross Unrealized Gains	0	[1]	'		'
Held To Maturity Securities Gross Unrealized Losses	-15	[1]	'		'
Gross Unrealized Gains - Securities held to maturity	1		'		0
Held-to-maturity Securities, Unrecognized Holding Loss	0		'		0
Estimated Fair Value - Securities held to maturity	336		'		2
Held-to-maturity Securities	335		'		2
Obligations of States and Political Subdivisions [Member]	'		'		'
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]	'		'		'
Amortized Cost - Securities available for sale	5		'		9
Gross Unrealized Gains - Securities available for sale	0		'		0
Gross Unrealized Losses - Securities available for sale	0		'		0
Available-for-sale securities, net carrying value	5		'		'
Estimated Fair Value - Securities available for sale	5		'		9
Residential Agency [Member]	'		'		'
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]	'		'		'
Amortized Cost - Securities available for sale	15,770		'		20,721
Gross Unrealized Gains - Securities available for sale	236		'		574
Gross Unrealized Losses - Securities available for sale	-101		'		-18
Available-for-sale securities, net carrying value	15,905		'		'
Estimated Fair Value - Securities available for sale	15,905		'		21,277
Held To Maturity Amortized Cost Basis	1,914		'		'
Held To Maturity Securities Gross Unrealized Gains	0	[1]	'		'
Held To Maturity Securities Gross Unrealized Losses	-83	[1]	'		'
Gross Unrealized Gains - Securities held to maturity	3		'		1
Held-to-maturity Securities, Unrecognized Holding Loss	-6		'		0
Estimated Fair Value - Securities held to maturity	1,828		'		7
Held-to-maturity Securities	1,831		'		6
Residential Non-Agency [Member]	'		'		'
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]	'		'		'
Amortized Cost - Securities available for sale	9		'		12
Gross Unrealized Gains - Securities available for sale	1		'		1
Gross Unrealized Losses - Securities available for sale	0		'		0
Available-for-sale securities, net carrying value	10		'		'
Estimated Fair Value - Securities available for sale	10		'		13
Commercial Agency [Member]	'		'		'
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]	'		'		'
Amortized Cost - Securities available for sale	864		'		705
Gross Unrealized Gains - Securities available for sale	5		'		20
Gross Unrealized Losses - Securities available for sale	-14		'		0
Available-for-sale securities, net carrying value	855		'		'
Estimated Fair Value - Securities available for sale	855		'		725
Held To Maturity Amortized Cost Basis	229		'		'
Held To Maturity Securities Gross Unrealized Gains	0	[1]	'		'
Held To Maturity Securities Gross Unrealized Losses	-9	[1]	'		'
Gross Unrealized Gains - Securities held to maturity	0		'		'
Held-to-maturity Securities, Unrecognized Holding Loss	-1		'		'
Estimated Fair Value - Securities held to maturity	219		'		'
Held-to-maturity Securities	220		'		'
Commercial Non-Agency [Member]	'		'		'
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]	'		'		'
Amortized Cost - Securities available for sale	1,211		'		1,055
Gross Unrealized Gains - Securities available for sale	12		'		43
Gross Unrealized Losses - Securities available for sale	-30		'		0
Available-for-sale securities, net carrying value	1,193		'		'
Estimated Fair Value - Securities available for sale	1,193		'		1,098
Corporate and Other Debt Securities [Member]	'		'		'
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]	'		'		'
Amortized Cost - Securities available for sale	2,868		'		2,762
Gross Unrealized Gains - Securities available for sale	34		'		81
Gross Unrealized Losses - Securities available for sale	-88		'		-8
Available-for-sale securities, net carrying value	2,814		'		'
Estimated Fair Value - Securities available for sale	2,814		'		2,835
Equity Securities [Member]	'		'		'
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]	'		'		'
Amortized Cost - Securities available for sale	689		'		679
Gross Unrealized Gains - Securities available for sale	8		'		4
Gross Unrealized Losses - Securities available for sale	0		'		-1
Available-for-sale securities, net carrying value	697		'		'
Estimated Fair Value - Securities available for sale	$697		'		$682
[1]	The gross unrealized losses recognized in other comprehensive income (OCI) on held to maturity securities resulted from a transfer of available for sale securities to held to maturity in the second quarter of 2013.

Securities_Schedule_Of_Amortiz1

Securities (Schedule Of Amortized Cost Of Equity Securities Related To Federal Reserve Bank Stock And Federal Home Loan Bank Stock) (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Disclosure Securities Schedule Of Amortized Cost Of Equity Securities Related To Federal Reserve Bank Stock And Federal Home Loan Bank Stock [Abstract]	'	'
Federal Reserve Bank	$495	$484
Federal Home Loan Bank	$67	$73

Securities_Schedule_Of_Cost_An

Securities (Schedule Of Cost And Estimated Fair Value Of Securities Available For Sale And Securities Held To Maturity By Contractual Maturity) (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Held To Maturity Amortized Cost Basis	$2,495	'
Held-to-maturity Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	311	'
Amortized Cost - Securities available for sale	21,565	26,543
Securities available for sale	21,630	27,244
Estimated Fair Value - Securities held to maturity	2,385	11
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses	-15	'
Federal Agency Securities [Member]	'	'
Held To Maturity Amortized Cost Basis	350	'
Held-to-maturity Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	0	'
Amortized Cost - Securities available for sale	98	550
Securities available for sale	99	553
Estimated Fair Value - Securities held to maturity	336	2
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses	0	'
Residential Agency [Member]	'	'
Held To Maturity Amortized Cost Basis	1,914	'
Held-to-maturity Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	311	'
Amortized Cost - Securities available for sale	15,770	20,721
Securities available for sale	15,905	21,277
Estimated Fair Value - Securities held to maturity	1,828	7
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses	-15	'
Residential Non-Agency [Member]	'	'
Amortized Cost - Securities available for sale	9	12
Securities available for sale	10	13
Commercial Agency [Member]	'	'
Held To Maturity Amortized Cost Basis	229	'
Held-to-maturity Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	0	'
Amortized Cost - Securities available for sale	864	705
Securities available for sale	855	725
Estimated Fair Value - Securities held to maturity	219	'
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses	0	'
Commercial Non-Agency [Member]	'	'
Amortized Cost - Securities available for sale	1,211	1,055
Securities available for sale	1,193	1,098
Equity Securities [Member]	'	'
Amortized Cost - Securities available for sale	689	679
Securities available for sale	697	682
Securities Available For Sale [Member]	'	'
Available-for-sale Securities, Debt Maturities, Next Twelve Months, Amortized Cost Basis	49	'
Available-for-sale Securities, Debt Maturities, Next Twelve Months, Fair Value	49	'
Available-for-sale Securities, Debt Maturities, Year Two Through Five, Amortized Cost Basis	1,035	'
Available-for-sale Securities, Debt Maturities, Year Two Through Five, Fair Value	1,047	'
Available-for-sale Securities, Debt Maturities, Year Six Through Ten, Amortized Cost Basis	1,555	'
Available-for-sale Securities, Debt Maturities, Year Six Through Ten, Fair Value	1,500	'
Available-for-sale Securities, Debt Maturities, after Ten Years, Amortized Cost Basis	383	'
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value	374	'
Held-to-maturity Securities [Member]	'	'
Due in one year or less, Amortized Cost	1	'
Due after one year through five years, Amortized Cost	2	'
Due after five years through ten years, Amortized Cost	349	'
Due in one year or less, Estimated Fair Value	1	'
Due after one year through five years, Estimated Fair Value	2	'
Due after five years through ten years, Estimated Fair Value	$335	'

Securities_Schedule_Of_Gross_U

Securities (Schedule Of Gross Unrealized Losses And Estimated Fair Value Of Securities Available For Sale) (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Unrealized Loss And Fair Value On Securities [Line Items]	'	'
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	$2,068	'
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses	-95	'
Held-to-maturity Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	311	'
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses	-15	'
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value	2,379	'
Held-to-maturity Securities, Continuous Unrealized Loss Position, Aggregate Losses	-110	'
Available For Sale Securities, Less Than Twelve Months, Estimated Fair Value	7,364	3,011
Available For Sale Securities, Twelve Months or More, Estimated Fair Value	313	157
Available For Sale Securities, Total Estimated Fair Value	7,677	3,168
Available For Sale Securities, Less Than Twelve Months, Gross Unrealized Losses	-224	-26
Available For Sale Securities, Twelve Months or More, Gross Unrealized Losses	-9	-2
Available For Sale Securities, Total Gross Unrealized Losses	-233	-28
US Treasury Securities [Member]	'	'
Unrealized Loss And Fair Value On Securities [Line Items]	'	'
Available For Sale Securities, Less Than Twelve Months, Estimated Fair Value	6	'
Available For Sale Securities, Twelve Months or More, Estimated Fair Value	9	'
Available For Sale Securities, Total Estimated Fair Value	15	'
Available For Sale Securities, Less Than Twelve Months, Gross Unrealized Losses	0	'
Available For Sale Securities, Twelve Months or More, Gross Unrealized Losses	0	'
Available For Sale Securities, Total Gross Unrealized Losses	0	'
Federal Agency Securities [Member]	'	'
Unrealized Loss And Fair Value On Securities [Line Items]	'	'
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	335	'
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses	-14	'
Held-to-maturity Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	0	'
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses	0	'
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value	335	'
Held-to-maturity Securities, Continuous Unrealized Loss Position, Aggregate Losses	-14	'
Available For Sale Securities, Less Than Twelve Months, Estimated Fair Value	1	350
Available For Sale Securities, Twelve Months or More, Estimated Fair Value	10	0
Available For Sale Securities, Total Estimated Fair Value	11	350
Available For Sale Securities, Less Than Twelve Months, Gross Unrealized Losses	0	-1
Available For Sale Securities, Twelve Months or More, Gross Unrealized Losses	0	0
Available For Sale Securities, Total Gross Unrealized Losses	0	-1
Residential Agency [Member]	'	'
Unrealized Loss And Fair Value On Securities [Line Items]	'	'
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	1,515	'
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses	-71	'
Held-to-maturity Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	311	'
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses	-15	'
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value	1,826	'
Held-to-maturity Securities, Continuous Unrealized Loss Position, Aggregate Losses	-86	'
Available For Sale Securities, Less Than Twelve Months, Estimated Fair Value	4,465	1,777
Available For Sale Securities, Twelve Months or More, Estimated Fair Value	273	157
Available For Sale Securities, Total Estimated Fair Value	4,738	1,934
Available For Sale Securities, Less Than Twelve Months, Gross Unrealized Losses	-94	-16
Available For Sale Securities, Twelve Months or More, Gross Unrealized Losses	-7	-2
Available For Sale Securities, Total Gross Unrealized Losses	-101	-18
Commercial Agency [Member]	'	'
Unrealized Loss And Fair Value On Securities [Line Items]	'	'
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	218	'
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses	-10	'
Held-to-maturity Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	0	'
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses	0	'
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value	218	'
Held-to-maturity Securities, Continuous Unrealized Loss Position, Aggregate Losses	-10	'
Available For Sale Securities, Less Than Twelve Months, Estimated Fair Value	467	'
Available For Sale Securities, Twelve Months or More, Estimated Fair Value	0	'
Available For Sale Securities, Total Estimated Fair Value	467	'
Available For Sale Securities, Less Than Twelve Months, Gross Unrealized Losses	-14	'
Available For Sale Securities, Twelve Months or More, Gross Unrealized Losses	0	'
Available For Sale Securities, Total Gross Unrealized Losses	-14	'
Commercial Non-Agency [Member]	'	'
Unrealized Loss And Fair Value On Securities [Line Items]	'	'
Available For Sale Securities, Less Than Twelve Months, Estimated Fair Value	709	'
Available For Sale Securities, Twelve Months or More, Estimated Fair Value	0	'
Available For Sale Securities, Total Estimated Fair Value	709	'
Available For Sale Securities, Less Than Twelve Months, Gross Unrealized Losses	-30	'
Available For Sale Securities, Twelve Months or More, Gross Unrealized Losses	0	'
Available For Sale Securities, Total Gross Unrealized Losses	-30	'
All Other Securities [Member]	'	'
Unrealized Loss And Fair Value On Securities [Line Items]	'	'
Available For Sale Securities, Less Than Twelve Months, Estimated Fair Value	1,716	884
Available For Sale Securities, Twelve Months or More, Estimated Fair Value	21	0
Available For Sale Securities, Total Estimated Fair Value	1,737	884
Available For Sale Securities, Less Than Twelve Months, Gross Unrealized Losses	-86	-9
Available For Sale Securities, Twelve Months or More, Gross Unrealized Losses	-2	0
Available For Sale Securities, Total Gross Unrealized Losses	($88)	($9)

Securities_Schedule_Of_Gross_G

Securities (Schedule Of Gross Gains And Gross Losses On Available For Sale Securities) (Details) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Disclosure Securities Schedule Of Proceeds From Sale Gross Gains And Gross Losses On Available For Sale Securities [Abstract]	'	'	'	'
Gross realized gains	$7	$13	$52	$37
Gross realized losses	-4	-1	-26	-1
Net securities gains (losses)	$3	$12	$26	$36

Securities_Narrative_Details

Securities (Narrative) (Details) (USD $)	3 Months Ended	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2012	Sep. 30, 2013		Jun. 30, 2013		Dec. 31, 2012
			Security				Security
Schedule of Available-for-sale Securities [Line Items]	'	'	'		'		'
Held To Maturity Securities Gross Unrealized Losses Recognized in Other Comprehensive Income	'	'	($107,000,000)	[1]	$111,000,000	[1]	'
available for sale securities transferred to held to maturity	'	'	'		2,400,000,000		'
Securities pledged to secure public funds, trust deposits and borrowing arrangements	'	'	12,200,000,000		'		11,800,000,000
Securities in unrealized loss position number	'	'	915		'		378
Credit-related impairment charge	$0	$2,000,000	'		'		'
[1]	The gross unrealized losses recognized in other comprehensive income (OCI) on held to maturity securities resulted from a transfer of available for sale securities to held to maturity in the second quarter of 2013.

Recovered_Sheet1

Loans And The Allowance For Credit Losses (Schedule Of Loan Portfolio, Net Of Unearned Income) (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Disclosure Loans And Allowance For Credit Losses Schedule Of Loan Portfolio Net Of Unearned Income [Abstract]	'	'
Commercial and industrial	$29,863	$26,674
Commercial real estate mortgage - owner-occupied	9,566	10,095
Commercial real estate construction - owner-occupied	377	302
Total commercial	39,806	37,071
Commercial investor real estate mortgage	5,613	6,808
Commercial investor real estate construction	1,317	914
Total investor real estate	6,930	7,722
Residential first mortgage	12,856	12,963
Home equity	11,349	11,800
Indirect	2,889	2,336
Consumer credit card	896	906
Other consumer	1,166	1,197
Total consumer	29,156	29,202
Loans, net of unearned income	$75,892	$73,995

Recovered_Sheet2

Loans And The Allowance For Credit Losses (Analysis Of The Allowance For Credit Losses By Portfolio Segment) (Details) (USD $)	3 Months Ended			9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012		Sep. 30, 2013	Sep. 30, 2012
Valuation Allowance for Impairment of Recognized Servicing Assets [Line Items]	'	'		'	'
Allowance for credit losses	$1,614	$2,138		$1,614	$2,138
Allowance for loan losses	1,636	2,291		1,919	2,745
Provision (credit) for loan losses	18	33		59	176
Charge-offs	-156	-298		-570	-989
Recoveries	42	36		132	130
Net loan losses	-114	-262		-438	-859
Reserve for unfunded credit commitments	73	91		83	78
Provision (credit) for unfunded credit commitments	1	-15		-9	-2
Reserve for unfunded credit commitments	74	76		74	76
Allowance for loan losses	1,540	2,062		1,540	2,062
Individually evaluated for impairment	582	701	[1]	582	701	[1]
Collectively evaluated for impairment	958	1,361	[1]	958	1,361	[1]
Individually evaluated for impairment	3,779	4,252	[1]	3,779	4,252	[1]
Collectively evaluated for impairment	72,113	71,007	[1]	72,113	71,007	[1]
Total loans evaluated for impairment	75,892	75,259		75,892	75,259
Commercial [Member]	'	'		'	'
Valuation Allowance for Impairment of Recognized Servicing Assets [Line Items]	'	'		'	'
Allowance for credit losses	819	905		819	905
Allowance for loan losses	764	884		847	1,030
Provision (credit) for loan losses	29	37		86	82
Charge-offs	-54	-91		-230	-323
Recoveries	17	17		53	58
Net loan losses	-37	-74		-177	-265
Reserve for unfunded credit commitments	60	61		69	30
Provision (credit) for unfunded credit commitments	3	-3		-6	28
Reserve for unfunded credit commitments	63	58		63	58
Allowance for loan losses	756	847		756	847
Individually evaluated for impairment	261	222	[1]	261	222	[1]
Collectively evaluated for impairment	495	625	[1]	495	625	[1]
Individually evaluated for impairment	1,184	1,136	[1]	1,184	1,136	[1]
Collectively evaluated for impairment	38,622	35,856	[1]	38,622	35,856	[1]
Total loans evaluated for impairment	39,806	36,992		39,806	36,992
Investor Real Estate [Member]	'	'		'	'
Valuation Allowance for Impairment of Recognized Servicing Assets [Line Items]	'	'		'	'
Allowance for credit losses	308	598		308	598
Allowance for loan losses	342	766		469	991
Provision (credit) for loan losses	-37	-112		-136	-202
Charge-offs	-13	-74		-59	-231
Recoveries	8	4		26	26
Net loan losses	-5	-70		-33	-205
Reserve for unfunded credit commitments	9	26		10	26
Provision (credit) for unfunded credit commitments	-1	-12		-2	-12
Reserve for unfunded credit commitments	8	14		8	14
Allowance for loan losses	300	584		300	584
Individually evaluated for impairment	159	276	[1]	159	276	[1]
Collectively evaluated for impairment	141	308	[1]	141	308	[1]
Individually evaluated for impairment	1,006	1,459	[1]	1,006	1,459	[1]
Collectively evaluated for impairment	5,924	7,254	[1]	5,924	7,254	[1]
Total loans evaluated for impairment	6,930	8,713		6,930	8,713
Consumer [Member]	'	'		'	'
Valuation Allowance for Impairment of Recognized Servicing Assets [Line Items]	'	'		'	'
Allowance for credit losses	487	635		487	635
Allowance for loan losses	530	641		603	724
Provision (credit) for loan losses	26	108		109	296
Charge-offs	-89	-133		-281	-435
Recoveries	17	15		53	46
Net loan losses	-72	-118		-228	-389
Reserve for unfunded credit commitments	4	4		4	22
Provision (credit) for unfunded credit commitments	-1	0		-1	-18
Reserve for unfunded credit commitments	3	4		3	4
Allowance for loan losses	484	631		484	631
Individually evaluated for impairment	162	203	[1]	162	203	[1]
Collectively evaluated for impairment	322	428	[1]	322	428	[1]
Individually evaluated for impairment	1,589	1,657	[1]	1,589	1,657	[1]
Collectively evaluated for impairment	27,567	27,897	[1]	27,567	27,897	[1]
Total loans evaluated for impairment	$29,156	$29,554		$29,156	$29,554
[1]	As discussed above, prior period amounts have been reclassified to conform to the current period classification.

Loans_And_The_Allowance_For_Cr2

Loans And The Allowance For Credit Losses (Credit Quality Indicators Excluding Loans Held For Sale) (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing Receivable	$75,892	$73,995
Commercial And Industrial [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing Receivable	29,863	26,674
Commercial Real Estate Mortgage - Owner-Occupied [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing Receivable	9,566	10,095
Commercial Real Estate Construction - Owner Occupied [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing Receivable	377	302
Total Commercial [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing Receivable	39,806	37,071
Commercial Investor Real Estate Mortgage [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing Receivable	5,613	6,808
Commercial Investor Real Estate Construction [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing Receivable	1,317	914
Total Investor Real Estate [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing Receivable	6,930	7,722
Residential First Mortgage [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing Receivable	12,856	12,963
Home Equity Line of Credit [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing Receivable	11,349	11,800
Indirect [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing Receivable	2,889	2,336
Consumer Credit Card [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing Receivable	896	906
Other Consumer [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing Receivable	1,166	1,197
Total Consumer [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing Receivable	29,156	29,202
Pass [Member] | Commercial And Industrial [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing Receivable	28,502	25,225
Pass [Member] | Commercial Real Estate Mortgage - Owner-Occupied [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing Receivable	8,683	8,976
Pass [Member] | Commercial Real Estate Construction - Owner Occupied [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing Receivable	331	278
Pass [Member] | Total Commercial [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing Receivable	37,516	34,479
Pass [Member] | Commercial Investor Real Estate Mortgage [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing Receivable	4,493	5,089
Pass [Member] | Commercial Investor Real Estate Construction [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing Receivable	1,215	733
Pass [Member] | Total Investor Real Estate [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing Receivable	5,708	5,822
Special Mention [Member] | Commercial And Industrial [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing Receivable	467	560
Special Mention [Member] | Commercial Real Estate Mortgage - Owner-Occupied [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing Receivable	228	240
Special Mention [Member] | Commercial Real Estate Construction - Owner Occupied [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing Receivable	29	3
Special Mention [Member] | Total Commercial [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing Receivable	724	803
Special Mention [Member] | Commercial Investor Real Estate Mortgage [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing Receivable	272	435
Special Mention [Member] | Commercial Investor Real Estate Construction [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing Receivable	39	98
Special Mention [Member] | Total Investor Real Estate [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing Receivable	311	533
Substandard Accrual [Member] | Commercial And Industrial [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing Receivable	511	480
Substandard Accrual [Member] | Commercial Real Estate Mortgage - Owner-Occupied [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing Receivable	291	440
Substandard Accrual [Member] | Commercial Real Estate Construction - Owner Occupied [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing Receivable	5	7
Substandard Accrual [Member] | Total Commercial [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing Receivable	807	927
Substandard Accrual [Member] | Commercial Investor Real Estate Mortgage [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing Receivable	572	827
Substandard Accrual [Member] | Commercial Investor Real Estate Construction [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing Receivable	32	63
Substandard Accrual [Member] | Total Investor Real Estate [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing Receivable	604	890
Accrual [Member] | Residential First Mortgage [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing Receivable	12,689	12,749
Accrual [Member] | Home Equity Line of Credit [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing Receivable	11,228	11,672
Accrual [Member] | Indirect [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing Receivable	2,889	2,336
Accrual [Member] | Consumer Credit Card [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing Receivable	896	906
Accrual [Member] | Other Consumer [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing Receivable	1,166	1,197
Accrual [Member] | Total Consumer [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing Receivable	28,868	28,860
Non-Accrual [Member] | Commercial And Industrial [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing Receivable	383	409
Non-Accrual [Member] | Commercial Real Estate Mortgage - Owner-Occupied [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing Receivable	364	439
Non-Accrual [Member] | Commercial Real Estate Construction - Owner Occupied [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing Receivable	12	14
Non-Accrual [Member] | Total Commercial [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing Receivable	759	862
Non-Accrual [Member] | Commercial Investor Real Estate Mortgage [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing Receivable	276	457
Non-Accrual [Member] | Commercial Investor Real Estate Construction [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing Receivable	31	20
Non-Accrual [Member] | Total Investor Real Estate [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing Receivable	307	477
Non-Accrual [Member] | Residential First Mortgage [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing Receivable	167	214
Non-Accrual [Member] | Home Equity Line of Credit [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing Receivable	121	128
Non-Accrual [Member] | Indirect [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing Receivable	0	0
Non-Accrual [Member] | Consumer Credit Card [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing Receivable	0	0
Non-Accrual [Member] | Other Consumer [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing Receivable	0	0
Non-Accrual [Member] | Total Consumer [Member]	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'
Financing Receivable	$288	$342

Loans_And_The_Allowance_For_Cr3

Loans And The Allowance For Credit Losses (Schedule Of Aging Analysis Of Days Past Due (DPD) For Each Portfolio Class) (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-59 DPD, Accrual Loans	$391	$421
60-89 DPD, Accrual Loans	215	254
90+ DPD, Accrual Loans	367	450
Total 30+ DPD, Accrual Loans	973	1,125
Total Accrual	74,538	72,314
Non-accrual	1,354	1,681
Loans, net of unearned income	75,892	73,995
Commercial And Industrial [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-59 DPD, Accrual Loans	18	27
60-89 DPD, Accrual Loans	13	23
90+ DPD, Accrual Loans	6	19
Total 30+ DPD, Accrual Loans	37	69
Total Accrual	29,480	26,265
Non-accrual	383	409
Loans, net of unearned income	29,863	26,674
Commercial Real Estate Mortgage - Owner-Occupied [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-59 DPD, Accrual Loans	42	49
60-89 DPD, Accrual Loans	14	28
90+ DPD, Accrual Loans	7	6
Total 30+ DPD, Accrual Loans	63	83
Total Accrual	9,202	9,656
Non-accrual	364	439
Loans, net of unearned income	9,566	10,095
Commercial Real Estate Construction - Owner Occupied [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-59 DPD, Accrual Loans	1	0
60-89 DPD, Accrual Loans	0	0
90+ DPD, Accrual Loans	0	0
Total 30+ DPD, Accrual Loans	1	0
Total Accrual	365	288
Non-accrual	12	14
Loans, net of unearned income	377	302
Total Commercial [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-59 DPD, Accrual Loans	61	76
60-89 DPD, Accrual Loans	27	51
90+ DPD, Accrual Loans	13	25
Total 30+ DPD, Accrual Loans	101	152
Total Accrual	39,047	36,209
Non-accrual	759	862
Loans, net of unearned income	39,806	37,071
Commercial Investor Real Estate Mortgage [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-59 DPD, Accrual Loans	62	38
60-89 DPD, Accrual Loans	56	42
90+ DPD, Accrual Loans	15	11
Total 30+ DPD, Accrual Loans	133	91
Total Accrual	5,337	6,351
Non-accrual	276	457
Loans, net of unearned income	5,613	6,808
Commercial Investor Real Estate Construction [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-59 DPD, Accrual Loans	1	1
60-89 DPD, Accrual Loans	3	1
90+ DPD, Accrual Loans	1	0
Total 30+ DPD, Accrual Loans	5	2
Total Accrual	1,286	894
Non-accrual	31	20
Loans, net of unearned income	1,317	914
Total Investor Real Estate [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-59 DPD, Accrual Loans	63	39
60-89 DPD, Accrual Loans	59	43
90+ DPD, Accrual Loans	16	11
Total 30+ DPD, Accrual Loans	138	93
Total Accrual	6,623	7,245
Non-accrual	307	477
Loans, net of unearned income	6,930	7,722
Residential First Mortgage [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-59 DPD, Accrual Loans	124	149
60-89 DPD, Accrual Loans	70	86
90+ DPD, Accrual Loans	246	307
Total 30+ DPD, Accrual Loans	440	542
Total Accrual	12,689	12,749
Non-accrual	167	214
Loans, net of unearned income	12,856	12,963
Home Equity Line of Credit [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-59 DPD, Accrual Loans	89	100
60-89 DPD, Accrual Loans	42	53
90+ DPD, Accrual Loans	72	87
Total 30+ DPD, Accrual Loans	203	240
Total Accrual	11,228	11,672
Non-accrual	121	128
Loans, net of unearned income	11,349	11,800
Indirect [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-59 DPD, Accrual Loans	31	31
60-89 DPD, Accrual Loans	8	9
90+ DPD, Accrual Loans	4	3
Total 30+ DPD, Accrual Loans	43	43
Total Accrual	2,889	2,336
Non-accrual	0	0
Loans, net of unearned income	2,889	2,336
Consumer Credit Card [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-59 DPD, Accrual Loans	8	7
60-89 DPD, Accrual Loans	4	7
90+ DPD, Accrual Loans	12	14
Total 30+ DPD, Accrual Loans	24	28
Total Accrual	896	906
Non-accrual	0	0
Loans, net of unearned income	896	906
Other Consumer [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-59 DPD, Accrual Loans	15	19
60-89 DPD, Accrual Loans	5	5
90+ DPD, Accrual Loans	4	3
Total 30+ DPD, Accrual Loans	24	27
Total Accrual	1,166	1,197
Non-accrual	0	0
Loans, net of unearned income	1,166	1,197
Total Consumer [Member]	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'
30-59 DPD, Accrual Loans	267	306
60-89 DPD, Accrual Loans	129	160
90+ DPD, Accrual Loans	338	414
Total 30+ DPD, Accrual Loans	734	880
Total Accrual	28,868	28,860
Non-accrual	288	342
Loans, net of unearned income	$29,156	$29,202

Loans_And_The_Allowance_For_Cr4

Loans And The Allowance For Credit Losses (Schedule Of Impaired Loans On Non-Accrual Status) (Details) (USD $)	Sep. 30, 2013		Dec. 31, 2012
In Millions, unless otherwise specified
Financing Receivable, Recorded Investment [Line Items]	'		'
Unpaid Principal Balance	$4,082	[1]	$4,714	[1]
Charge-offs and Payments Applied	303	[2]	345	[2]
Total Impaired Loans	3,779	[3]	4,369	[3]
Impaired Loans on Non-accrual Status with No Related Allowance	119	[3]	167	[3]
Impaired Loans on Non-accrual Status with Related Allowance	3,660	[3]	4,202	[3]
Impaired Loans with Related Allowance	582		794
Coverage %	21.70%	[4]	24.20%	[4]
Commercial And Industrial [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Unpaid Principal Balance	704	[1]	766	[1]
Charge-offs and Payments Applied	89	[2]	69	[2]
Total Impaired Loans	615	[3]	697	[3]
Impaired Loans on Non-accrual Status with No Related Allowance	49	[3]	63	[3]
Impaired Loans on Non-accrual Status with Related Allowance	566	[3]	634	[3]
Impaired Loans with Related Allowance	129		170
Coverage %	31.00%	[4]	31.20%	[4]
Commercial Real Estate Mortgage - Owner-Occupied [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Unpaid Principal Balance	584	[1]	716	[1]
Charge-offs and Payments Applied	52	[2]	68	[2]
Total Impaired Loans	532	[3]	648	[3]
Impaired Loans on Non-accrual Status with No Related Allowance	46	[3]	44	[3]
Impaired Loans on Non-accrual Status with Related Allowance	486	[3]	604	[3]
Impaired Loans with Related Allowance	125		173
Coverage %	30.30%	[4]	33.70%	[4]
Commercial Real Estate Construction - Owner Occupied [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Unpaid Principal Balance	39	[1]	19	[1]
Charge-offs and Payments Applied	2	[2]	4	[2]
Total Impaired Loans	37	[3]	15	[3]
Impaired Loans on Non-accrual Status with No Related Allowance	0	[3]	4	[3]
Impaired Loans on Non-accrual Status with Related Allowance	37	[3]	11	[3]
Impaired Loans with Related Allowance	7		3
Coverage %	23.10%	[4]	36.80%	[4]
Total Commercial [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Unpaid Principal Balance	1,327	[1]	1,501	[1]
Charge-offs and Payments Applied	143	[2]	141	[2]
Total Impaired Loans	1,184	[3]	1,360	[3]
Impaired Loans on Non-accrual Status with No Related Allowance	95	[3]	111	[3]
Impaired Loans on Non-accrual Status with Related Allowance	1,089	[3]	1,249	[3]
Impaired Loans with Related Allowance	261		346
Coverage %	30.40%	[4]	32.40%	[4]
Commercial Investor Real Estate Mortgage [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Unpaid Principal Balance	996	[1]	1,342	[1]
Charge-offs and Payments Applied	95	[2]	113	[2]
Total Impaired Loans	901	[3]	1,229	[3]
Impaired Loans on Non-accrual Status with No Related Allowance	24	[3]	54	[3]
Impaired Loans on Non-accrual Status with Related Allowance	877	[3]	1,175	[3]
Impaired Loans with Related Allowance	141		229
Coverage %	23.70%	[4]	25.50%	[4]
Commercial Investor Real Estate Construction [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Unpaid Principal Balance	111	[1]	133	[1]
Charge-offs and Payments Applied	6	[2]	6	[2]
Total Impaired Loans	105	[3]	127	[3]
Impaired Loans on Non-accrual Status with No Related Allowance	0	[3]	2	[3]
Impaired Loans on Non-accrual Status with Related Allowance	105	[3]	125	[3]
Impaired Loans with Related Allowance	18		23
Coverage %	21.60%	[4]	21.80%	[4]
Total Investor Real Estate [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Unpaid Principal Balance	1,107	[1]	1,475	[1]
Charge-offs and Payments Applied	101	[2]	119	[2]
Total Impaired Loans	1,006	[3]	1,356	[3]
Impaired Loans on Non-accrual Status with No Related Allowance	24	[3]	56	[3]
Impaired Loans on Non-accrual Status with Related Allowance	982	[3]	1,300	[3]
Impaired Loans with Related Allowance	159		252
Coverage %	23.50%	[4]	25.20%	[4]
Residential First Mortgage [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Unpaid Principal Balance	1,219	[1]	1,253	[1]
Charge-offs and Payments Applied	59	[2]	68	[2]
Total Impaired Loans	1,160	[3]	1,185	[3]
Impaired Loans on Non-accrual Status with No Related Allowance	0	[3]	0	[3]
Impaired Loans on Non-accrual Status with Related Allowance	1,160	[3]	1,185	[3]
Impaired Loans with Related Allowance	135		157
Coverage %	15.90%	[4]	18.00%	[4]
Home Equity Line of Credit [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Unpaid Principal Balance	397	[1]	443	[1]
Charge-offs and Payments Applied	0	[2]	16	[2]
Total Impaired Loans	397	[3]	427	[3]
Impaired Loans on Non-accrual Status with No Related Allowance	0	[3]	0	[3]
Impaired Loans on Non-accrual Status with Related Allowance	397	[3]	427	[3]
Impaired Loans with Related Allowance	27		38
Coverage %	6.80%	[4]	12.20%	[4]
Indirect [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Unpaid Principal Balance	1	[1]	2	[1]
Charge-offs and Payments Applied	0	[2]	1	[2]
Total Impaired Loans	1	[3]	1	[3]
Impaired Loans on Non-accrual Status with No Related Allowance	0	[3]	0	[3]
Impaired Loans on Non-accrual Status with Related Allowance	1	[3]	1	[3]
Impaired Loans with Related Allowance	0		0
Coverage %	0.00%	[4]	50.00%	[4]
Consumer Credit Card [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Unpaid Principal Balance	2	[1]	'
Charge-offs and Payments Applied	0	[2]	'
Total Impaired Loans	2	[3]	'
Impaired Loans on Non-accrual Status with No Related Allowance	0	[3]	'
Impaired Loans on Non-accrual Status with Related Allowance	2	[3]	'
Impaired Loans with Related Allowance	0		'
Coverage %	0.00%	[4]	'
Other Consumer [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Unpaid Principal Balance	29	[1]	40	[1]
Charge-offs and Payments Applied	0	[2]	0	[2]
Total Impaired Loans	29	[3]	40	[3]
Impaired Loans on Non-accrual Status with No Related Allowance	0	[3]	0	[3]
Impaired Loans on Non-accrual Status with Related Allowance	29	[3]	40	[3]
Impaired Loans with Related Allowance	0		1
Coverage %	0.00%	[4]	2.50%	[4]
Total Consumer [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Unpaid Principal Balance	1,648	[1]	1,738	[1]
Charge-offs and Payments Applied	59	[2]	85	[2]
Total Impaired Loans	1,589	[3]	1,653	[3]
Impaired Loans on Non-accrual Status with No Related Allowance	0	[3]	0	[3]
Impaired Loans on Non-accrual Status with Related Allowance	1,589	[3]	1,653	[3]
Impaired Loans with Related Allowance	162		196
Coverage %	13.40%	[4]	16.20%	[4]
Non-Accrual [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Unpaid Principal Balance	1,417	[1]	1,758	[1]
Charge-offs and Payments Applied	265	[2]	305	[2]
Total Impaired Loans	1,152	[3]	1,453	[3]
Impaired Loans on Non-accrual Status with No Related Allowance	119	[3]	167	[3]
Impaired Loans on Non-accrual Status with Related Allowance	1,033	[3]	1,286	[3]
Impaired Loans with Related Allowance	305		433
Coverage %	40.20%	[4]	42.00%	[4]
Non-Accrual [Member] | Commercial And Industrial [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Unpaid Principal Balance	446	[1]	467	[1]
Charge-offs and Payments Applied	84	[2]	62	[2]
Total Impaired Loans	362	[3]	405	[3]
Impaired Loans on Non-accrual Status with No Related Allowance	49	[3]	63	[3]
Impaired Loans on Non-accrual Status with Related Allowance	313	[3]	342	[3]
Impaired Loans with Related Allowance	94		128
Coverage %	39.90%	[4]	40.70%	[4]
Non-Accrual [Member] | Commercial Real Estate Mortgage - Owner-Occupied [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Unpaid Principal Balance	412	[1]	503	[1]
Charge-offs and Payments Applied	48	[2]	64	[2]
Total Impaired Loans	364	[3]	439	[3]
Impaired Loans on Non-accrual Status with No Related Allowance	46	[3]	44	[3]
Impaired Loans on Non-accrual Status with Related Allowance	318	[3]	395	[3]
Impaired Loans with Related Allowance	108		148
Coverage %	37.90%	[4]	42.10%	[4]
Non-Accrual [Member] | Commercial Real Estate Construction - Owner Occupied [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Unpaid Principal Balance	13	[1]	18	[1]
Charge-offs and Payments Applied	1	[2]	4	[2]
Total Impaired Loans	12	[3]	14	[3]
Impaired Loans on Non-accrual Status with No Related Allowance	0	[3]	4	[3]
Impaired Loans on Non-accrual Status with Related Allowance	12	[3]	10	[3]
Impaired Loans with Related Allowance	6		3
Coverage %	53.80%	[4]	38.90%	[4]
Non-Accrual [Member] | Total Commercial [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Unpaid Principal Balance	871	[1]	988	[1]
Charge-offs and Payments Applied	133	[2]	130	[2]
Total Impaired Loans	738	[3]	858	[3]
Impaired Loans on Non-accrual Status with No Related Allowance	95	[3]	111	[3]
Impaired Loans on Non-accrual Status with Related Allowance	643	[3]	747	[3]
Impaired Loans with Related Allowance	208		279
Coverage %	39.20%	[4]	41.40%	[4]
Non-Accrual [Member] | Commercial Investor Real Estate Mortgage [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Unpaid Principal Balance	358	[1]	560	[1]
Charge-offs and Payments Applied	82	[2]	103	[2]
Total Impaired Loans	276	[3]	457	[3]
Impaired Loans on Non-accrual Status with No Related Allowance	24	[3]	54	[3]
Impaired Loans on Non-accrual Status with Related Allowance	252	[3]	403	[3]
Impaired Loans with Related Allowance	75		132
Coverage %	43.90%	[4]	42.00%	[4]
Non-Accrual [Member] | Commercial Investor Real Estate Construction [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Unpaid Principal Balance	37	[1]	26	[1]
Charge-offs and Payments Applied	6	[2]	6	[2]
Total Impaired Loans	31	[3]	20	[3]
Impaired Loans on Non-accrual Status with No Related Allowance	0	[3]	2	[3]
Impaired Loans on Non-accrual Status with Related Allowance	31	[3]	18	[3]
Impaired Loans with Related Allowance	10		7
Coverage %	43.20%	[4]	50.00%	[4]
Non-Accrual [Member] | Total Investor Real Estate [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Unpaid Principal Balance	395	[1]	586	[1]
Charge-offs and Payments Applied	88	[2]	109	[2]
Total Impaired Loans	307	[3]	477	[3]
Impaired Loans on Non-accrual Status with No Related Allowance	24	[3]	56	[3]
Impaired Loans on Non-accrual Status with Related Allowance	283	[3]	421	[3]
Impaired Loans with Related Allowance	85		139
Coverage %	43.80%	[4]	42.30%	[4]
Non-Accrual [Member] | Residential First Mortgage [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Unpaid Principal Balance	133	[1]	152	[1]
Charge-offs and Payments Applied	44	[2]	55	[2]
Total Impaired Loans	89	[3]	97	[3]
Impaired Loans on Non-accrual Status with No Related Allowance	0	[3]	0	[3]
Impaired Loans on Non-accrual Status with Related Allowance	89	[3]	97	[3]
Impaired Loans with Related Allowance	11		13
Coverage %	41.40%	[4]	44.70%	[4]
Non-Accrual [Member] | Home Equity Line of Credit [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Unpaid Principal Balance	18	[1]	32	[1]
Charge-offs and Payments Applied	0	[2]	11	[2]
Total Impaired Loans	18	[3]	21	[3]
Impaired Loans on Non-accrual Status with No Related Allowance	0	[3]	0	[3]
Impaired Loans on Non-accrual Status with Related Allowance	18	[3]	21	[3]
Impaired Loans with Related Allowance	1		2
Coverage %	5.60%	[4]	40.60%	[4]
Non-Accrual [Member] | Total Consumer [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Unpaid Principal Balance	151	[1]	184	[1]
Charge-offs and Payments Applied	44	[2]	66	[2]
Total Impaired Loans	107	[3]	118	[3]
Impaired Loans on Non-accrual Status with No Related Allowance	0	[3]	0	[3]
Impaired Loans on Non-accrual Status with Related Allowance	107	[3]	118	[3]
Impaired Loans with Related Allowance	$12		$15
Coverage %	37.10%	[4]	44.00%	[4]
[1]	Unpaid principal balance represents the contractual obligation due from the customer and includes the net book value plus charge-offs and payments applied.
[2]	Charge-offs and payments applied represents cumulative partial charge-offs taken, as well as interest payments received that have been applied against the outstanding principal balance.
[3]	Book value represents the unpaid principal balance less charge-offs and payments applied; it is shown before any allowance for loan losses.
[4]	Coverage % represents charge-offs and payments applied plus the related allowance as a percent of the unpaid principal balance.

Loans_And_The_Allowance_For_Cr5

Loans And The Allowance For Credit Losses (Schedule Of Impaired Loans On Accrual Status) (Details) (USD $)	Sep. 30, 2013		Dec. 31, 2012
In Millions, unless otherwise specified
Financing Receivable, Recorded Investment [Line Items]	'		'
Unpaid Principal Balance	$4,082	[1]	$4,714	[1]
Charge-offs and Payments Applied	303	[2]	345	[2]
Total Impaired Loans	3,779	[3]	4,369	[3]
Impaired Loans on Non-accrual Status with No Related Allowance	119	[3]	167	[3]
Impaired Financing Receivable Recorded Investment With Related Allowance	3,660	[3]	4,202	[3]
Related Allowance for Loan Losses	582		794
Coverage %	21.70%	[4]	24.20%	[4]
Commercial And Industrial [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Unpaid Principal Balance	704	[1]	766	[1]
Charge-offs and Payments Applied	89	[2]	69	[2]
Total Impaired Loans	615	[3]	697	[3]
Impaired Loans on Non-accrual Status with No Related Allowance	49	[3]	63	[3]
Impaired Financing Receivable Recorded Investment With Related Allowance	566	[3]	634	[3]
Related Allowance for Loan Losses	129		170
Coverage %	31.00%	[4]	31.20%	[4]
Commercial Real Estate Mortgage - Owner-Occupied [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Unpaid Principal Balance	584	[1]	716	[1]
Charge-offs and Payments Applied	52	[2]	68	[2]
Total Impaired Loans	532	[3]	648	[3]
Impaired Loans on Non-accrual Status with No Related Allowance	46	[3]	44	[3]
Impaired Financing Receivable Recorded Investment With Related Allowance	486	[3]	604	[3]
Related Allowance for Loan Losses	125		173
Coverage %	30.30%	[4]	33.70%	[4]
Commercial Real Estate Construction - Owner Occupied [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Unpaid Principal Balance	39	[1]	19	[1]
Charge-offs and Payments Applied	2	[2]	4	[2]
Total Impaired Loans	37	[3]	15	[3]
Impaired Loans on Non-accrual Status with No Related Allowance	0	[3]	4	[3]
Impaired Financing Receivable Recorded Investment With Related Allowance	37	[3]	11	[3]
Related Allowance for Loan Losses	7		3
Coverage %	23.10%	[4]	36.80%	[4]
Total Commercial [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Unpaid Principal Balance	1,327	[1]	1,501	[1]
Charge-offs and Payments Applied	143	[2]	141	[2]
Total Impaired Loans	1,184	[3]	1,360	[3]
Impaired Loans on Non-accrual Status with No Related Allowance	95	[3]	111	[3]
Impaired Financing Receivable Recorded Investment With Related Allowance	1,089	[3]	1,249	[3]
Related Allowance for Loan Losses	261		346
Coverage %	30.40%	[4]	32.40%	[4]
Commercial Investor Real Estate Mortgage [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Unpaid Principal Balance	996	[1]	1,342	[1]
Charge-offs and Payments Applied	95	[2]	113	[2]
Total Impaired Loans	901	[3]	1,229	[3]
Impaired Loans on Non-accrual Status with No Related Allowance	24	[3]	54	[3]
Impaired Financing Receivable Recorded Investment With Related Allowance	877	[3]	1,175	[3]
Related Allowance for Loan Losses	141		229
Coverage %	23.70%	[4]	25.50%	[4]
Commercial Investor Real Estate Construction [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Unpaid Principal Balance	111	[1]	133	[1]
Charge-offs and Payments Applied	6	[2]	6	[2]
Total Impaired Loans	105	[3]	127	[3]
Impaired Loans on Non-accrual Status with No Related Allowance	0	[3]	2	[3]
Impaired Financing Receivable Recorded Investment With Related Allowance	105	[3]	125	[3]
Related Allowance for Loan Losses	18		23
Coverage %	21.60%	[4]	21.80%	[4]
Total Investor Real Estate [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Unpaid Principal Balance	1,107	[1]	1,475	[1]
Charge-offs and Payments Applied	101	[2]	119	[2]
Total Impaired Loans	1,006	[3]	1,356	[3]
Impaired Loans on Non-accrual Status with No Related Allowance	24	[3]	56	[3]
Impaired Financing Receivable Recorded Investment With Related Allowance	982	[3]	1,300	[3]
Related Allowance for Loan Losses	159		252
Coverage %	23.50%	[4]	25.20%	[4]
Residential First Mortgage [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Unpaid Principal Balance	1,219	[1]	1,253	[1]
Charge-offs and Payments Applied	59	[2]	68	[2]
Total Impaired Loans	1,160	[3]	1,185	[3]
Impaired Loans on Non-accrual Status with No Related Allowance	0	[3]	0	[3]
Impaired Financing Receivable Recorded Investment With Related Allowance	1,160	[3]	1,185	[3]
Related Allowance for Loan Losses	135		157
Coverage %	15.90%	[4]	18.00%	[4]
Home Equity Line of Credit [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Unpaid Principal Balance	397	[1]	443	[1]
Charge-offs and Payments Applied	0	[2]	16	[2]
Total Impaired Loans	397	[3]	427	[3]
Impaired Loans on Non-accrual Status with No Related Allowance	0	[3]	0	[3]
Impaired Financing Receivable Recorded Investment With Related Allowance	397	[3]	427	[3]
Related Allowance for Loan Losses	27		38
Coverage %	6.80%	[4]	12.20%	[4]
Indirect [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Unpaid Principal Balance	1	[1]	2	[1]
Charge-offs and Payments Applied	0	[2]	1	[2]
Total Impaired Loans	1	[3]	1	[3]
Impaired Loans on Non-accrual Status with No Related Allowance	0	[3]	0	[3]
Impaired Financing Receivable Recorded Investment With Related Allowance	1	[3]	1	[3]
Related Allowance for Loan Losses	0		0
Coverage %	0.00%	[4]	50.00%	[4]
Consumer Credit Card [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Unpaid Principal Balance	2	[1]	'
Charge-offs and Payments Applied	0	[2]	'
Total Impaired Loans	2	[3]	'
Impaired Loans on Non-accrual Status with No Related Allowance	0	[3]	'
Impaired Financing Receivable Recorded Investment With Related Allowance	2	[3]	'
Related Allowance for Loan Losses	0		'
Coverage %	0.00%	[4]	'
Other Consumer [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Unpaid Principal Balance	29	[1]	40	[1]
Charge-offs and Payments Applied	0	[2]	0	[2]
Total Impaired Loans	29	[3]	40	[3]
Impaired Loans on Non-accrual Status with No Related Allowance	0	[3]	0	[3]
Impaired Financing Receivable Recorded Investment With Related Allowance	29	[3]	40	[3]
Related Allowance for Loan Losses	0		1
Coverage %	0.00%	[4]	2.50%	[4]
Total Consumer [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Unpaid Principal Balance	1,648	[1]	1,738	[1]
Charge-offs and Payments Applied	59	[2]	85	[2]
Total Impaired Loans	1,589	[3]	1,653	[3]
Impaired Loans on Non-accrual Status with No Related Allowance	0	[3]	0	[3]
Impaired Financing Receivable Recorded Investment With Related Allowance	1,589	[3]	1,653	[3]
Related Allowance for Loan Losses	162		196
Coverage %	13.40%	[4]	16.20%	[4]
Accrual [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Unpaid Principal Balance	2,665	[1]	2,956	[1]
Charge-offs and Payments Applied	38	[2]	40	[2]
Total Impaired Loans	2,627	[3]	2,916	[3]
Related Allowance for Loan Losses	277		361
Coverage %	11.80%	[4]	13.60%	[4]
Accrual [Member] | Commercial And Industrial [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Unpaid Principal Balance	258	[1]	299	[1]
Charge-offs and Payments Applied	5	[2]	7	[2]
Total Impaired Loans	253	[3]	292	[3]
Related Allowance for Loan Losses	35		42
Coverage %	15.50%	[4]	16.40%	[4]
Accrual [Member] | Commercial Real Estate Mortgage - Owner-Occupied [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Unpaid Principal Balance	172	[1]	213	[1]
Charge-offs and Payments Applied	4	[2]	4	[2]
Total Impaired Loans	168	[3]	209	[3]
Related Allowance for Loan Losses	17		25
Coverage %	12.20%	[4]	13.60%	[4]
Accrual [Member] | Commercial Real Estate Construction - Owner Occupied [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Unpaid Principal Balance	26	[1]	1	[1]
Charge-offs and Payments Applied	1	[2]	0	[2]
Total Impaired Loans	25	[3]	1	[3]
Related Allowance for Loan Losses	1		0
Coverage %	7.70%	[4]	0.00%	[4]
Accrual [Member] | Total Commercial [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Unpaid Principal Balance	456	[1]	513	[1]
Charge-offs and Payments Applied	10	[2]	11	[2]
Total Impaired Loans	446	[3]	502	[3]
Related Allowance for Loan Losses	53		67
Coverage %	13.80%	[4]	15.20%	[4]
Accrual [Member] | Commercial Investor Real Estate Mortgage [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Unpaid Principal Balance	638	[1]	782	[1]
Charge-offs and Payments Applied	13	[2]	10	[2]
Total Impaired Loans	625	[3]	772	[3]
Related Allowance for Loan Losses	66		97
Coverage %	12.40%	[4]	13.70%	[4]
Accrual [Member] | Commercial Investor Real Estate Construction [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Unpaid Principal Balance	74	[1]	107	[1]
Charge-offs and Payments Applied	0	[2]	0	[2]
Total Impaired Loans	74	[3]	107	[3]
Related Allowance for Loan Losses	8		16
Coverage %	10.80%	[4]	15.00%	[4]
Accrual [Member] | Total Investor Real Estate [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Unpaid Principal Balance	712	[1]	889	[1]
Charge-offs and Payments Applied	13	[2]	10	[2]
Total Impaired Loans	699	[3]	879	[3]
Related Allowance for Loan Losses	74		113
Coverage %	12.20%	[4]	13.80%	[4]
Accrual [Member] | Residential First Mortgage [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Unpaid Principal Balance	1,086	[1]	1,101	[1]
Charge-offs and Payments Applied	15	[2]	13	[2]
Total Impaired Loans	1,071	[3]	1,088	[3]
Related Allowance for Loan Losses	124		144
Coverage %	12.80%	[4]	14.30%	[4]
Accrual [Member] | Home Equity Line of Credit [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Unpaid Principal Balance	379	[1]	411	[1]
Charge-offs and Payments Applied	0	[2]	5	[2]
Total Impaired Loans	379	[3]	406	[3]
Related Allowance for Loan Losses	26		36
Coverage %	6.90%	[4]	10.00%	[4]
Accrual [Member] | Indirect [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Unpaid Principal Balance	1	[1]	2	[1]
Charge-offs and Payments Applied	0	[2]	1	[2]
Total Impaired Loans	1	[3]	1	[3]
Related Allowance for Loan Losses	0		0
Coverage %	0.00%	[4]	50.00%	[4]
Accrual [Member] | Consumer Credit Card [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Unpaid Principal Balance	2	[1]	'
Charge-offs and Payments Applied	0	[2]	'
Total Impaired Loans	2	[3]	'
Related Allowance for Loan Losses	0		'
Coverage %	0.00%	[4]	'
Accrual [Member] | Other Consumer [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Unpaid Principal Balance	29	[1]	40	[1]
Charge-offs and Payments Applied	0	[2]	0	[2]
Total Impaired Loans	29	[3]	40	[3]
Related Allowance for Loan Losses	0		1
Coverage %	0.00%	[4]	2.50%	[4]
Accrual [Member] | Total Consumer [Member]	'		'
Financing Receivable, Recorded Investment [Line Items]	'		'
Unpaid Principal Balance	1,497	[1]	1,554	[1]
Charge-offs and Payments Applied	15	[2]	19	[2]
Total Impaired Loans	1,482	[3]	1,535	[3]
Related Allowance for Loan Losses	$150		$181
Coverage %	11.00%	[4]	12.90%	[4]
[1]	Unpaid principal balance represents the contractual obligation due from the customer and includes the net book value plus charge-offs and payments applied.
[2]	Charge-offs and payments applied represents cumulative partial charge-offs taken, as well as interest payments received that have been applied against the outstanding principal balance.
[3]	Book value represents the unpaid principal balance less charge-offs and payments applied; it is shown before any allowance for loan losses.
[4]	Coverage % represents charge-offs and payments applied plus the related allowance as a percent of the unpaid principal balance.

Loans_And_The_Allowance_For_Cr6

Loans And The Allowance For Credit Losses (Interest Income On Loans Modified in Troubled Debt Restructuring) (Details) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Average Balance	$3,872	$4,806	$4,100	$4,927
Interest Income Recognized	29	35	94	104
Commercial And Industrial [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Average Balance	636	721	649	707
Interest Income Recognized	4	4	10	12
Commercial Real Estate Mortgage - Owner-Occupied [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Average Balance	551	714	598	752
Interest Income Recognized	2	3	8	8
Commercial Real Estate Construction - Owner Occupied [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Average Balance	40	22	38	26
Interest Income Recognized	0	0	1	0
Total Commercial [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Average Balance	1,227	1,457	1,285	1,485
Interest Income Recognized	6	7	19	20
Commercial Investor Real Estate Mortgage [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Average Balance	940	1,520	1,071	1,572
Interest Income Recognized	7	10	24	31
Commercial Investor Real Estate Construction [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Average Balance	108	178	121	230
Interest Income Recognized	1	2	5	5
Total Investor Real Estate [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Average Balance	1,048	1,698	1,192	1,802
Interest Income Recognized	8	12	29	36
Residential First Mortgage [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Average Balance	1,163	1,169	1,176	1,148
Interest Income Recognized	9	10	28	29
Home Equity Line of Credit [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Average Balance	401	435	411	441
Interest Income Recognized	5	5	16	17
Indirect [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Average Balance	1	2	1	2
Interest Income Recognized	0	0	0	0
Consumer Credit Card [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Average Balance	2	0	1	0
Interest Income Recognized	0	0	0	0
Other Consumer [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Average Balance	30	45	34	49
Interest Income Recognized	1	1	2	2
Total Consumer [Member]	'	'	'	'
Financing Receivable, Recorded Investment [Line Items]	'	'	'	'
Average Balance	1,597	1,651	1,623	1,640
Interest Income Recognized	$15	$16	$46	$48

Loans_And_The_Allowance_For_Cr7

Loans And The Allowance For Credit Losses (Loans By Class Modified In TDR) (Details) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Financing Receivable, Modifications [Line Items]	'	'	'	'
Number of Obligors	921	1,099	2,849	3,833
Recorded investment	$473	$742	$1,576	$2,316
Increase in Allowance at Modification	9	15	30	49
Commercial And Industrial [Member]	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Number of Obligors	109	148	335	507
Recorded investment	135	223	445	559
Increase in Allowance at Modification	1	1	2	3
Commercial Real Estate Mortgage - Owner-Occupied [Member]	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Number of Obligors	93	95	272	331
Recorded investment	78	91	251	301
Increase in Allowance at Modification	1	1	3	3
Commercial Real Estate Construction - Owner Occupied [Member]	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Number of Obligors	2	0	5	7
Recorded investment	3	0	30	6
Increase in Allowance at Modification	0	0	0	0
Total Commercial [Member]	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Number of Obligors	204	243	612	845
Recorded investment	216	314	726	866
Increase in Allowance at Modification	2	2	5	6
Commercial Investor Real Estate Mortgage [Member]	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Number of Obligors	98	138	321	485
Recorded investment	173	312	569	1,049
Increase in Allowance at Modification	1	2	3	8
Commercial Investor Real Estate Construction [Member]	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Number of Obligors	21	47	64	176
Recorded investment	25	26	77	102
Increase in Allowance at Modification	0	0	0	1
Total Investor Real Estate [Member]	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Number of Obligors	119	185	385	661
Recorded investment	198	338	646	1,151
Increase in Allowance at Modification	1	2	3	9
Residential First Mortgage [Member]	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Number of Obligors	293	355	965	1,123
Recorded investment	47	75	169	234
Increase in Allowance at Modification	5	10	19	30
Home Equity Line of Credit [Member]	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Number of Obligors	172	222	451	808
Recorded investment	10	14	29	58
Increase in Allowance at Modification	1	1	3	4
Consumer Credit Card [Member]	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Number of Obligors	57	'	202	'
Recorded investment	1	'	3	'
Increase in Allowance at Modification	0	'	0	'
Indirect And Other Consumer [Member]	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Number of Obligors	76	94	234	396
Recorded investment	1	1	3	7
Increase in Allowance at Modification	0	0	0	0
Total Consumer [Member]	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Number of Obligors	598	671	1,852	2,327
Recorded investment	59	90	204	299
Increase in Allowance at Modification	$6	$11	$22	$34

Loans_And_The_Allowance_For_Cr8

Loans And The Allowance For Credit Losses (Loans Modified In Past Twelve Months Which Subsequently Defaulted) (Details) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Financing Receivable, Modifications [Line Items]	'	'	'	'
Defaulted during period where modified in a TDR, twelve months prior to modification	$42	$107	$185	$376
Commercial And Industrial [Member]	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Defaulted during period where modified in a TDR, twelve months prior to modification	1	23	29	82
Commercial Real Estate Mortgage - Owner-Occupied [Member]	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Defaulted during period where modified in a TDR, twelve months prior to modification	5	13	28	47
Commercial Real Estate Construction - Owner Occupied [Member]	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Defaulted during period where modified in a TDR, twelve months prior to modification	0	0	0	1
Total Commercial [Member]	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Defaulted during period where modified in a TDR, twelve months prior to modification	6	36	57	130
Commercial Investor Real Estate Mortgage [Member]	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Defaulted during period where modified in a TDR, twelve months prior to modification	5	50	60	161
Commercial Investor Real Estate Construction [Member]	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Defaulted during period where modified in a TDR, twelve months prior to modification	19	2	24	21
Total Investor Real Estate [Member]	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Defaulted during period where modified in a TDR, twelve months prior to modification	24	52	84	182
Residential First Mortgage [Member]	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Defaulted during period where modified in a TDR, twelve months prior to modification	11	15	40	48
Home Equity Line of Credit [Member]	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Defaulted during period where modified in a TDR, twelve months prior to modification	1	4	4	16
Total Consumer [Member]	'	'	'	'
Financing Receivable, Modifications [Line Items]	'	'	'	'
Defaulted during period where modified in a TDR, twelve months prior to modification	$12	$19	$44	$64

Loans_And_The_Allowance_For_Cr9

Loans And The Allowance For Credit Losses (Narrative) (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Loans And Leases [Line Items]	'	'	'	'	'
Recorded investment	$131,000,000	$267,000,000	$475,000,000	$975,000,000	'
Nonperforming loans classified as held for sale	43,000,000	'	43,000,000	'	89,000,000
Indirect loans purchased	277,000,000	254,000,000	733,000,000	661,000,000	'
Reserves for non-accrual loans and leases	'	'	2,500,000	'	'
Non-performing loans were transferred to held for sale net of charge-offs	27,000,000	81,000,000	96,000,000	251,000,000	'
Non-performing loans charges-offs	14,000,000	43,000,000	55,000,000	135,000,000	'
Non-accrual loans including loans held for sale	1,400,000,000	'	1,400,000,000	'	1,800,000,000
Percentage of commercial and investor real estate loan Tdrs in non-accrual status 90 days past due	14.90%	'	'	'	'
Period past due of commercial and investor real estate loan Tdrs in non accrual status	'	'	'90 days	'	'
Restructured binding unfunded commitments	222,000,000	'	222,000,000	'	'
Residential First Mortgage [Member]	'	'	'	'	'
Loans And Leases [Line Items]	'	'	'	'	'
TDRs were in excess of 180 days past due	'	'	93,000,000	'	'
Residential Mortgage Period	'	'	'180 days	'	'
Home Equity First Lien TDRs [Member]	'	'	'	'	'
Loans And Leases [Line Items]	'	'	'	'	'
TDRs were in excess of 180 days past due	'	'	10,000,000	'	'
Residential Mortgage Period	'	'	'180 days	'	'
Home Equity Second Lien [Member]	'	'	'	'	'
Loans And Leases [Line Items]	'	'	'	'	'
TDRs were in excess of 180 days past due	'	'	7,000,000	'	'
Residential Mortgage Period	'	'	'120 days	'	'
Minimum [Member]	'	'	'	'	'
Loans And Leases [Line Items]	'	'	'	'	'
Financing period for consumer loans, in years	'	'	'15 years	'	'
Maximum [Member]	'	'	'	'	'
Loans And Leases [Line Items]	'	'	'	'	'
Financing period for consumer loans, in years	'	'	'30 years	'	'
Non-Accrual [Member]	'	'	'	'	'
Loans And Leases [Line Items]	'	'	'	'	'
Commercial and investor real estate loans modified in a Tdr during the period and on non-accrual status	101,000,000	'	'	'	'
Federal Home Loan Bank Certificates and Obligations (FHLB) [Member]	'	'	'	'	'
Loans And Leases [Line Items]	'	'	'	'	'
Pledged assets for loans	11,500,000,000	'	11,500,000,000	'	'
Federal Reserve Bank [Member]	'	'	'	'	'
Loans And Leases [Line Items]	'	'	'	'	'
Pledged assets for loans	$25,700,000,000	'	$25,700,000,000	'	'

Servicing_of_Financial_Assets_1

Servicing of Financial Assets (Analysis Of Mortgage Servicing Rights Under The Fair Value Measurement Method) (Details) (USD $)	3 Months Ended		9 Months Ended		1 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Mar. 29, 2013
					Residential Mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'	'	'	'
Carrying value, beginning of period	$276	$179	$191	$182	'
Additions	13	16	73	44	'
Increase in fair value, due to change in valuation inputs or assumptions	0	-11	45	-28	'
Increase in fair value, economic amortization associated with borrower repayments	-8	-8	-28	-22	'
Carrying value, end of period	281	176	281	176	3,000
Mortgage servicing rights purchased	'	'	'	'	$28

Servicing_of_Financial_Assets_2

Servicing of Financial Assets (Data And Assumptions Used In The Fair Value Calculation As Well As The Valuation's Sensitivity To Rate Fluctuations Related To Mortgage Servicing Rights) (Details) (USD $)	9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012
	BasisPoint	BasisPoint
Disclosure Loan Servicing Data And Assumptions Used In Fair Value Calculation As Well As Valuations Sensitivity To Rate Fluctuations Related To Mortgage Servicing Rights [Abstract]	'	'
Unpaid principal balance	$28,234	$26,005
Weighted-average prepayment speed (CPR; percentage)	9.40%	20.10%
Estimated impact on fair value of a 10% increase	-12	-13
Estimated impact on fair value of a 20% increase	-24	-23
Option-adjusted spread (basis points)	1,014	1,035
Estimated impact on fair value of a 10% increase	-10	-5
Estimated impact on fair value of a 20% increase	($20)	($10)
Weighted-average coupon interest rate	4.50%	5.00%
Weighted-average servicing fee (basis points)	27.7	28.3
Weighted-average remaining maturity (months)	'279 months	'277 months

Servicing_of_Financial_Assets_3

Servicing of Financial Assets (Schedule Of Fees Resulting From The Servicing Of Mortgage Loans) (Details) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Disclosure Loan Servicing Schedule Of Fees Resulting From Servicing Of Mortgage Loans [Abstract]	'	'	'	'
Servicing related fees and other ancillary income	$22	$21	$64	$63

Servicing_of_Financial_Assets_4

Servicing of Financial Assets (Analysis Of Repurchase Liability Related To Mortgage Loans Sold With Representations And Warranty Provisions) (Details) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Disclosure Loan Servicing Analysis Of Repurchase Liability Related To Mortgage Loans Sold With Representations And Warranty Provisions [Abstract]	'	'	'	'
Beginning balance	$40	$37	$40	$32
Additions	8	7	23	30
Losses	-8	-6	-23	-24
Ending balance	$40	$38	$40	$38

Goodwill_Schedule_Of_Goodwill_

Goodwill (Schedule Of Goodwill By Segment) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Indefinite-lived Intangible Assets [Line Items]	'	'
Goodwill	$4,816	$4,816
Business Services [Member]	'	'
Indefinite-lived Intangible Assets [Line Items]	'	'
Goodwill	2,552	2,552
Control premium percent	30.00%	20.00%
Consumer Services [Member]	'	'
Indefinite-lived Intangible Assets [Line Items]	'	'
Goodwill	1,797	1,797
Control premium percent	40.00%	40.00%
Wealth Management [Member]	'	'
Indefinite-lived Intangible Assets [Line Items]	'	'
Goodwill	$467	$467
Control premium percent	30.00%	30.00%

Goodwill_Schedule_Of_Assumptio

Goodwill (Schedule Of Assumptions Used In Estimating Fair Value) (Details)	3 Months Ended
	Sep. 30, 2013		Dec. 31, 2012
Business Services [Member]	'		'
Indefinite-lived Intangible Assets [Line Items]	'		'
Discount rate used in income approach	12.00%		14.00%
Public company method market multiplier	1.2	[1]	1.2	[2]
Transaction method market multiplier	1.6	[3]	1.3	[3]
Control premium percent	30.00%		20.00%
Consumer Services [Member]	'		'
Indefinite-lived Intangible Assets [Line Items]	'		'
Discount rate used in income approach	12.00%		13.00%
Public company method market multiplier	1.2	[1]	1	[2]
Transaction method market multiplier	1.6	[3]	1.3	[3]
Control premium percent	40.00%		40.00%
Wealth Management [Member]	'		'
Indefinite-lived Intangible Assets [Line Items]	'		'
Discount rate used in income approach	12.00%		13.00%
Public company method market multiplier	16.9	[1]	14	[2]
Transaction method market multiplier	24.5	[3]	25.2	[3]
Control premium percent	30.00%		30.00%
[1]	For the Business Services and Consumer Services reporting units, these multipliers are applied to tangible book value. For the Wealth Management reporting unit, this multiplier is applied to earnings. In addition to the multipliers, a 30 percent control premium was assumed for the Business Services reporting unit, a 40 percent control premium was assumed for the Consumer Services reporting unit and a 30 percent control premium was assumed for the Wealth Management reporting unit based on current market factors. Because the control premium considers potential revenue synergies and cost savings for similar financial services transactions, reporting units operating in businesses that have greater barriers to entry tend to have greater control premiums.
[2]	For the Business Services and Consumer Services reporting units, these multipliers are applied to tangible book value. For the Wealth Management reporting unit, this multiplier is applied to earnings. In addition to the multipliers, a 20 percent control premium was assumed for the Business Services reporting unit, a 40 percent control premium was assumed for the Consumer Services reporting unit and a 30 percent control premium was assumed for the Wealth Management reporting unit based on current market factors. Because the control premium considers potential revenue synergies and cost savings for similar financial services transactions, reporting units operating in businesses that have greater barriers to entry tend to have greater control premiums.
[3]	For the Business Services and Consumer Services reporting units, these multipliers are applied to tangible book value. For the Wealth Management reporting unit, this multiplier is applied to earnings.

Recovered_Sheet3

Stockholders' Equity And Accumulated Other Comprehensive Income (Loss) (Narrative) (Details) (USD $)

0 Months Ended

1 Months Ended

3 Months Ended

9 Months Ended

12 Months Ended

1 Months Ended

9 Months Ended

1 Months Ended

1 Months Ended

In Millions, except Share data, unless otherwise specified

Mar. 19, 2013

Mar. 19, 2012

Sep. 30, 2013

Jun. 30, 2013

Mar. 31, 2013

Sep. 30, 2012

Jun. 30, 2012

Mar. 31, 2012

Sep. 30, 2013

Sep. 30, 2012

Dec. 31, 2012

Nov. 14, 2008

31-May-12

Sep. 30, 2012

Apr. 04, 2012

31-May-12

Nov. 01, 2012

Nov. 01, 2012

Nov. 01, 2012

Additional Paid-In Capital [Member]

Additional Paid-In Capital [Member]

Series A Preferred Stock [Member]

Cumulative Preferred Stock [Member]

Non Cumulative Perpetual Preferred Stock [Member]

Non Cumulative Perpetual Preferred Stock [Member]

Non Cumulative Perpetual Preferred Stock [Member]

Additional Paid-In Capital [Member]

Depositary Shares [Member]

Series A Preferred Stock [Member]

Series A Preferred Stock [Member]

Depositary Shares [Member]

Stockholders' Equity And Comprehensive Income (Loss) [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Common stock, issued

'

153,000,000

1,418,838,161

'

'

'

'

'

1,418,838,161

'

1,454,626,952

'

'

'

'

'

'

'

'

Common stock price per share

'

$5.90

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Net proceeds from issuance of common stock

'

$875

'

'

'

'

'

'

$0

$875

'

'

'

'

'

'

'

'

'

Non-cumulative perpetual preferred stock, series a

'

'

'

'

'

'

'

'

'

'

'

3,500,000

'

'

'

'

'

'

20,000,000

Warrants received to purchase

'

'

'

'

'

'

'

'

'

'

'

48,300,000

'

'

'

'

'

'

'

Preferred stock quarterly dividend rate during the first five years, unless redeemed

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

6.38%

Non-cumulative perpetual preferred stock, series A

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$1

Preferred stock, liquidation preference of per share

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$1,000

$25

Net of issuance costs

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

486

'

'

Preferred dividends

'

'

8

8

8

'

'

'

24

44

'

'

'

'

'

'

'

'

'

Repurchased shares of stock

'

'

'

'

'

'

'

'

'

'

'

'

'

'

3,500,000

'

'

'

'

Payments for Repurchase of Common Stock

'

'

'

'

'

'

'

'

340

0

'

'

'

'

'

'

'

'

'

Payments for Repurchase of Warrants

'

'

'

'

'

'

'

'

0

45

'

'

45

45

'

45

'

'

'

Common shares available for repurchase

'

'

'

'

'

'

'

'

'

'

23,000,000

'

'

'

'

'

'

'

'

Common stock purchase plan

$350

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Stock Repurchased and Retired During Period, Shares

'

'

'

'

'

'

'

'

36,000,000

'

'

'

'

'

'

'

'

'

'

Cash dividends declared, per share

'

'

$0.03

$0.03

$0.01

$0.01

$0.01

$0.01

$0.07

$0.03

'

'

'

'

'

'

'

'

'

Stockholders_Equity_and_Accumu2

Stockholders' Equity and Accumulated Other Comprehensive Income (Loss) (Schedule Of Accumulated Other Comprehensive Income (Loss)) (Details) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Disclosure Stockholders Equity And Accumulated Other Comprehensive Income Loss Schedule Of Accumulated Other Comprehensive Income Loss [Abstract]	'	'	'	'
Unrealized losses on securities transferred to held to maturity, Beginning of Period	($68)	'	$0	'
Unrealized losses on securities transferred to held to maturity, Net Change	2	'	-66	'
Unrealized losses on securities transferred to held to maturity, End of Period	-66	'	-66	'
Unrealized gains on securities available for sale, Beginning of Period	0	394	436	322
Unrealized gains on securities available for sale, Net Change	41	143	-395	215
Unrealized gains on securities available for sale, End of Period	41	537	41	537
Unrealized gains on derivative instruments designated as, Beginning of Period	35	110	93	84
Unrealized gains on derivative instruments designated as, Net Change	12	-6	-46	20
Unrealized gains on derivative instruments designated as, End of Period	47	104	47	104
Defined benefit pension plans and other post employment benefits, Beginning of Period	-445	-450	-464	-475
Defined benefit pension plans and other post employment benefits, Net Change	12	11	31	36
Defined benefit pension plans and other post employment benefits, End of Period	-433	-439	-433	-439
Other comprehensive income, net of tax, Beginning of Period	-478	54	65	-69
Other comprehensive income, net of tax, Net Change	67	148	-476	271
Other comprehensive income, net of tax, End of Period	($411)	$202	($411)	$202

Stockholders_Equity_and_Accumu3

Stockholders' Equity and Accumulated Other Comprehensive Income (Loss) Stockholders Equity and Accumulated Other Comprehensive Income (Loss)(Reclassification From Accumulated Other Comprehensive Income (Loss) (Details) (USD $)	3 Months Ended				9 Months Ended
	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2013		Sep. 30, 2012
Reclassification From Accumulated Other Comprehensive Income (Loss) [Line Items]	'		'		'		'
Amortization of Unrealized Losses on Securities Transferred to Held to Maturity, Net of Tax	$2,000,000		$0		$2,000,000		$0
Tax (expense) or benefit	-124,000,000		-136,000,000		-360,000,000		-344,000,000
Gain or Loss Reclassified from AOCI into Income	26,000,000	[1],[2]	16,000,000	[1],[2]	58,000,000	[1],[2]	50,000,000	[1],[2]
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)	0		0		0		-1,000,000
Defined Benefit Plan, Amortization of Actuarial Gains (Losses)	19,000,000		18,000,000		52,000,000		53,000,000
Reclassification From AOCI, Total	4,000,000	[3]	'		18,000,000	[3]	'
Unrealized Loss, Held to Maturity Securities [Member]	'		'		'		'
Reclassification From Accumulated Other Comprehensive Income (Loss) [Line Items]	'		'		'		'
Amortization of Unrealized Losses on Securities Transferred to Held to Maturity into Income, Before Tax	-4,000,000	[3]	'		-4,000,000	[3]	'
Amortization of Unrealized Losses on Securities Transferred to Held to Maturity, Net of Tax	-2,000,000	[3]	'		-2,000,000	[3]	'
Tax (expense) or benefit	2,000,000	[3]	'		2,000,000	[3]	'
Unrealized Gains and Losses, Available-for-Sale Securities [Member]	'		'		'		'
Reclassification From Accumulated Other Comprehensive Income (Loss) [Line Items]	'		'		'		'
Securities gains, net	3,000,000	[3]	'		26,000,000	[3]	'
Tax (expense) or benefit	-1,000,000	[3]	'		-9,000,000	[3]	'
Unrealized Gains And Losses On Available-for-Sale Securities, Net of Tax	2,000,000	[3]	'		17,000,000	[3]	'
Gains and Losses on Cash Flow Hedges [Member]	'		'		'		'
Reclassification From Accumulated Other Comprehensive Income (Loss) [Line Items]	'		'		'		'
Tax (expense) or benefit	-10,000,000	[3]	'		-22,000,000	[3]	'
Gain and Loss on Cash Flow Hedges, Net of Tax	16,000,000	[3]	'		36,000,000	[3]	'
Gain or Loss Reclassified from AOCI into Income	26,000,000	[1],[2],[3]	'		58,000,000	[1],[2],[3]	'
Amortization of Defined Benefit Pension Items [Member]	'		'		'		'
Reclassification From Accumulated Other Comprehensive Income (Loss) [Line Items]	'		'		'		'
Tax (expense) or benefit	7,000,000	[3]	'		19,000,000	[3]	'
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)	0	[3],[4]	'		0	[3],[4]	'
Defined Benefit Plan, Amortization of Actuarial Gains (Losses)	-19,000,000	[3],[4]	'		-52,000,000	[3],[4]	'
Amortization of Defined Benefit Pension Items, Total Before Tax	-19,000,000	[3]	'		-52,000,000	[3]	'
Amortization of Defined Benefit Pension Items, Net of Tax	($12,000,000)	[3]	'		($33,000,000)	[3]	'
[1]	Pre-tax
[2]	All cash flow hedges were highly effective for all periods presented, and the change in fair value attributed to hedge ineffectiveness was not material.
[3]	Amounts in parentheses indicate reductions to net income.
[4]	These accumulated other comprehensive income (loss) components are included in the computation of net periodic pension cost and are included in salaries and employee benefits on the consolidated statements of income (see Note 11 for additional details).

Recovered_Sheet4

Earnings (Loss) Per Common Share (Computation Of Basic And Diluted Earnings (Loss) Per Common Share) (Details) (USD $)	3 Months Ended				9 Months Ended
In Millions, except Per Share data, unless otherwise specified	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2013		Sep. 30, 2012
Disclosure Earnings Loss Per Common Share Computation Of Basic And Diluted Earnings Loss Per Common Share [Abstract]	'		'		'		'
Income from continuing operations	$293		$312		$894		$902
Preferred stock dividends and accretion	-8		0		-24		-125
Income from continuing operations available to common shareholders	285		312		870		777
Income (loss) from discontinued operations, net of tax	0		-11		1		-47
Net income available to common shareholders	$285		$301		$871		$730
Weighted-average common shares outstanding—basic	1,388		1,414		1,401		1,370
Potential common shares	17		9		14		5
Weighted-average common shares outstanding—diluted	1,405		1,423		1,415		1,375
Earnings per common share from continuing operations:	'		'		'		'
Basic	$0.21	[1]	$0.22	[1]	$0.62	[1]	$0.57	[1]
Diluted	$0.20	[1]	$0.22	[1]	$0.61	[1]	$0.57	[1]
Earning (Loss) Per Common Share From Discontinued Operations [Abstract]	'		'		'		'
Basic	$0	[1]	($0.01)	[1]	$0	[1]	($0.04)	[1]
Diluted	$0	[1]	($0.01)	[1]	$0	[1]	($0.04)	[1]
Earnings per common share:	'		'		'		'
Basic	$0.21	[1]	$0.21	[1]	$0.62	[1]	$0.53	[1]
Diluted	$0.20	[1]	$0.21	[1]	$0.62	[1]	$0.53	[1]
Antidilutive securities excluded from computation of earnings per share	24		32		25		37
[1]	Certain per share amounts may not appear to reconcile due to rounding.

ShareBased_Payments_Narrative_

Share-Based Payments (Narrative) (Details)	9 Months Ended
	Sep. 30, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Vesting period of stock options (in years)	'3 years
Common share equivalents subject to and available for distribution to recipients	100,000,000
Share equivalent factor stock options	1
Share equivalents factor, restricted stock granted	2.25
Number of remaining share equivalents authorized for issuance under the long term compensation plan	53,000,000
Maximum [Member]	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Number of years within the adoption of stock option and long-term incentive compensation plans that awards may be granted	'10 years

ShareBased_Payments_Summary_Of

Share-Based Payments (Summary Of Activity Related To Stock Options) (Details) (USD $)	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Disclosure Share Based Payments Summary Of Activity Related To Stock Options [Abstract]	'	'
Number of Options, Outstanding at beginning of period	38,258,204	46,351,349
Number of Options, Granted	0	0
Number of Options, Exercised	-810,936	-338,182
Number of Options, Canceled/Forfeited	-3,699,256	-5,911,118
Number of Options, Outstanding at end of period	33,748,012	40,102,049
Number of Options, Exercisable at end of period	33,277,791	37,108,726
Weighted-Average Exercise Price, Outstanding at beginning of period	$23.09	$23.62
Weighted-Average Exercise Price, Granted	$0	$0
Weighted-Average Exercise Price, Exercised	$5.22	$4.07
Weighted-Average Exercise Price, Canceled/Forfeited	$25.91	$25.60
Weighted-Average Exercise Price, Outstanding at end of period	$23.21	$23.49
Weighted-Average Exercise Price, Exercisable at end of period	$23.45	$24.83

ShareBased_Payments_Summary_Of1

Share-Based Payments (Summary Of Restricted Stock Award And Unit Activity) (Details) (USD $)	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Disclosure Share Based Payments Summary Of Restricted Stock Award And Unit Activity [Abstract]	'	'
Number of Shares, Non-vested at beginning of period	11,945,179	6,280,360
Number of Shares, Granted	6,327,865	8,426,987
Number of Shares, Vested	-1,481,659	-1,521,360
Number of Shares, Forfeited	-375,850	-671,288
Number of Shares, Non-vested at end of period	16,415,535	12,514,699
Weighted-Average Grant Date Fair Value, Non-vested at beginning of period	$6.15	$7.60
Weighted-Average Grant Date Fair Value, Granted	$8.04	$5.86
Weighted-Average Grant Date Fair Value, Vested	$6.75	$4.58
Weighted-Average Grant Date Fair Value, Forfeited	$6.38	$4.15
Weighted-Average Grant Date Fair Value, Non-vested at end of period	$6.82	$6.98

Recovered_Sheet5

Pension And Other Postretirement Benefits (Components Of Net Periodic Pension And Other Postretirement Benefits) (Details) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]	'	'	'	'
Service cost	$10	$8	$31	$30
Interest cost	23	24	67	68
Expected return on plan assets	-33	-28	-99	-85
Amortization of actuarial loss	19	18	52	53
Amortization of prior service cost	0	0	0	1
Net periodic pension cost	19	22	51	67
Qualified Plan [Member]	'	'	'	'
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]	'	'	'	'
Service cost	9	7	28	28
Interest cost	21	22	63	63
Expected return on plan assets	-33	-28	-99	-85
Amortization of actuarial loss	18	18	50	53
Amortization of prior service cost	0	0	0	0
Net periodic pension cost	15	19	42	59
Non-qualified Plans [Member]	'	'	'	'
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]	'	'	'	'
Service cost	1	1	3	2
Interest cost	2	2	4	5
Expected return on plan assets	0	0	0	0
Amortization of actuarial loss	1	0	2	0
Amortization of prior service cost	0	0	0	1
Net periodic pension cost	$4	$3	$9	$8

Derivative_Financial_Instrumen2

Derivative Financial Instruments And Hedging Activities (Schedule Of Derivative Instruments Notional And Fair Values) (Details) (USD $)	Sep. 30, 2013		Dec. 31, 2012
In Millions, unless otherwise specified
Derivative Instruments And Hedging Activities [Line Items]	'		'
Total derivatives, notional amounts	$79,624		$101,837
Fair value of derivative assets	1,301		1,927
Fair value of derivative liabilities	1,350		1,825
Other liabilities [Member]	'		'
Derivative Instruments And Hedging Activities [Line Items]	'		'
Fair value of derivative liabilities	1,350	[1]	1,825	[1]
Other assets [Member]	'		'
Derivative Instruments And Hedging Activities [Line Items]	'		'
Fair value of derivative assets	1,301	[1]	1,927	[1]
Designated as Hedging Instrument [Member]	'		'
Derivative Instruments And Hedging Activities [Line Items]	'		'
Notional value of derivatives designated as hedging instruments	9,888		6,388
Designated as Hedging Instrument [Member] | Interest Rate Swaps [Member]	'		'
Derivative Instruments And Hedging Activities [Line Items]	'		'
Notional value of fair value hedging relationships	4,238		5,388
Notional value of cash flow hedging relationships	5,650		1,000
Designated as Hedging Instrument [Member] | Other liabilities [Member]	'		'
Derivative Instruments And Hedging Activities [Line Items]	'		'
Fair value of derivative liabilities	82	[1]	1	[1]
Designated as Hedging Instrument [Member] | Other liabilities [Member] | Interest Rate Swaps [Member]	'		'
Derivative Instruments And Hedging Activities [Line Items]	'		'
Liability derivatives in fair value hedging relationships	27	[1]	1	[1]
Liability derivatives in cash flow hedging relationships	55	[1]	0	[1]
Designated as Hedging Instrument [Member] | Other assets [Member]	'		'
Derivative Instruments And Hedging Activities [Line Items]	'		'
Fair value of derivative assets	94	[1]	115	[1]
Designated as Hedging Instrument [Member] | Other assets [Member] | Interest Rate Swaps [Member]	'		'
Derivative Instruments And Hedging Activities [Line Items]	'		'
Asset derivatives in fair value hedging relationships	74	[1]	113	[1]
Asset derivatives in cash flow hedging relationships	20	[1]	2	[1]
Not Designated as Hedging Instrument [Member]	'		'
Derivative Instruments And Hedging Activities [Line Items]	'		'
Notional value of derivatives not designated as hedging instruments	69,736		95,449
Not Designated as Hedging Instrument [Member] | Interest Rate Swaps [Member]	'		'
Derivative Instruments And Hedging Activities [Line Items]	'		'
Notional value of derivatives not designated as hedging instruments	45,447		46,054
Not Designated as Hedging Instrument [Member] | Interest Rate Options [Member]	'		'
Derivative Instruments And Hedging Activities [Line Items]	'		'
Notional value of derivatives not designated as hedging instruments	3,585		3,274
Not Designated as Hedging Instrument [Member] | Interest Rate Futures And Forward Commitments [Member]	'		'
Derivative Instruments And Hedging Activities [Line Items]	'		'
Notional value of derivatives not designated as hedging instruments	18,267		43,908
Not Designated as Hedging Instrument [Member] | Other Contracts [Member]	'		'
Derivative Instruments And Hedging Activities [Line Items]	'		'
Notional value of derivatives not designated as hedging instruments	2,437		2,213
Not Designated as Hedging Instrument [Member] | Other liabilities [Member]	'		'
Derivative Instruments And Hedging Activities [Line Items]	'		'
Fair value of derivative liabilities	1,268	[1]	1,824	[1]
Not Designated as Hedging Instrument [Member] | Other liabilities [Member] | Interest Rate Swaps [Member]	'		'
Derivative Instruments And Hedging Activities [Line Items]	'		'
Fair value of derivative liabilities	1,201	[1]	1,775	[1]
Not Designated as Hedging Instrument [Member] | Other liabilities [Member] | Interest Rate Options [Member]	'		'
Derivative Instruments And Hedging Activities [Line Items]	'		'
Fair value of derivative liabilities	3	[1]	4	[1]
Not Designated as Hedging Instrument [Member] | Other liabilities [Member] | Interest Rate Futures And Forward Commitments [Member]	'		'
Derivative Instruments And Hedging Activities [Line Items]	'		'
Fair value of derivative liabilities	23	[1]	13	[1]
Not Designated as Hedging Instrument [Member] | Other liabilities [Member] | Other Contracts [Member]	'		'
Derivative Instruments And Hedging Activities [Line Items]	'		'
Fair value of derivative liabilities	41	[1]	32	[1]
Not Designated as Hedging Instrument [Member] | Other assets [Member]	'		'
Derivative Instruments And Hedging Activities [Line Items]	'		'
Fair value of derivative assets	1,207	[1]	1,812	[1]
Not Designated as Hedging Instrument [Member] | Other assets [Member] | Interest Rate Swaps [Member]	'		'
Derivative Instruments And Hedging Activities [Line Items]	'		'
Fair value of derivative assets	1,143	[1]	1,746	[1]
Not Designated as Hedging Instrument [Member] | Other assets [Member] | Interest Rate Options [Member]	'		'
Derivative Instruments And Hedging Activities [Line Items]	'		'
Fair value of derivative assets	15	[1]	25	[1]
Not Designated as Hedging Instrument [Member] | Other assets [Member] | Interest Rate Futures And Forward Commitments [Member]	'		'
Derivative Instruments And Hedging Activities [Line Items]	'		'
Fair value of derivative assets	7	[1]	10	[1]
Not Designated as Hedging Instrument [Member] | Other assets [Member] | Other Contracts [Member]	'		'
Derivative Instruments And Hedging Activities [Line Items]	'		'
Fair value of derivative assets	$42	[1]	$31	[1]
[1]	Derivatives in a gain position are recorded as other assets and derivatives in a loss position are recorded as other liabilities on the consolidated balance sheets.

Derivative_Financial_Instrumen3

Derivative Financial Instruments And Hedging Activities (Schedule Of The Effect Of Derivative Instruments On The Statements Of Operations) (Details) (USD $)	3 Months Ended				9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2013		Sep. 30, 2012
Derivative Instruments And Hedging Activities [Line Items]	'		'		'		'
Amount of Gain (Loss) Recognized in Income on Derivatives	$19		$18		($4)		$56
Amount of Gain (Loss) Recognized in Income on Related Hedged Item	-7		4		47		28
Amount of Gain (Loss) Recognized in Accumulated OCI on Derivatives (Effective Portion)	12	[1],[2]	-6	[1],[2]	-46	[1],[2]	20	[1],[2]
(Gain) or Loss Reclassified from AOCI into Income	26	[2],[3]	16	[2],[3]	58	[2],[3]	50	[2],[3]
Interest Expense [Member] | Forward Starting Swaps [Member]	'		'		'		'
Derivative Instruments And Hedging Activities [Line Items]	'		'		'		'
Amount of Gain (Loss) Recognized in Accumulated OCI on Derivatives (Effective Portion)	2	[1],[2]	3	[1],[2]	7	[1],[2]	7	[1],[2]
(Gain) or Loss Reclassified from AOCI into Income	-4	[2],[3]	-4	[2],[3]	-12	[2],[3]	-11	[2],[3]
Interest Income On Loans [Member] | Interest Rate Swaps [Member]	'		'		'		'
Derivative Instruments And Hedging Activities [Line Items]	'		'		'		'
Amount of Gain (Loss) Recognized in Accumulated OCI on Derivatives (Effective Portion)	10	[1],[2]	-9	[1],[2]	-53	[1],[2]	13	[1],[2]
(Gain) or Loss Reclassified from AOCI into Income	30	[2],[3]	20	[2],[3]	70	[2],[3]	61	[2],[3]
Debt/CDs [Member] | Interest Expense [Member] | Interest Rate Swaps [Member]	'		'		'		'
Derivative Instruments And Hedging Activities [Line Items]	'		'		'		'
Amount of Gain (Loss) Recognized in Income on Derivatives	11		23		47		81
Amount of Gain (Loss) Recognized in Income on Related Hedged Item	1		3		6		9
Debt/CDs [Member] | Other Non-Interest Expense [Member] | Interest Rate Swaps [Member]	'		'		'		'
Derivative Instruments And Hedging Activities [Line Items]	'		'		'		'
Amount of Gain (Loss) Recognized in Income on Derivatives	7		-5		-65		-25
Amount of Gain (Loss) Recognized in Income on Related Hedged Item	-6		1		58		19
Securities Available For Sale [Member] | Interest Expense [Member] | Interest Rate Swaps [Member]	'		'		'		'
Derivative Instruments And Hedging Activities [Line Items]	'		'		'		'
Amount of Gain (Loss) Recognized in Income on Derivatives	-1		0		-2		0
Amount of Gain (Loss) Recognized in Income on Related Hedged Item	0		0		0		0
Securities Available For Sale [Member] | Other Non-Interest Expense [Member] | Interest Rate Swaps [Member]	'		'		'		'
Derivative Instruments And Hedging Activities [Line Items]	'		'		'		'
Amount of Gain (Loss) Recognized in Income on Derivatives	2		0		16		0
Amount of Gain (Loss) Recognized in Income on Related Hedged Item	($2)		$0		($17)		$0
[1]	After-tax
[2]	All cash flow hedges were highly effective for all periods presented, and the change in fair value attributed to hedge ineffectiveness was not material.
[3]	Pre-tax

Derivative_Financial_Instrumen4

Derivative Financial Instruments And Hedging Activities (Schedule Of Gains (Losses) Recognized Related To Derivatives Not Designated As Hedging Instruments) (Details) (USD $)	3 Months Ended				9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2013		Sep. 30, 2012
Amount of gain (loss) recognized in income on derivatives	($43)		$25		($34)		$88
Capital Markets Fee Income [Member]	'		'		'		'
Amount of gain (loss) recognized in income on derivatives	6	[1]	12	[1]	30	[1]	26	[1]
Mortgage Income [Member]	'		'		'		'
Amount of gain (loss) recognized in income on derivatives	-49		13		-64		62
Interest Rate Swaps [Member] | Capital Markets Fee Income [Member]	'		'		'		'
Amount of gain (loss) recognized in income on derivatives	5		10		17		21
Interest Rate Swaps [Member] | Mortgage Income [Member]	'		'		'		'
Amount of gain (loss) recognized in income on derivatives	1		10		-26		29
Interest Rate Options [Member] | Capital Markets Fee Income [Member]	'		'		'		'
Amount of gain (loss) recognized in income on derivatives	0		0		2		-1
Interest Rate Options [Member] | Mortgage Income [Member]	'		'		'		'
Amount of gain (loss) recognized in income on derivatives	9		10		-10		27
Interest Rate Futures And Forward Commitments [Member] | Capital Markets Fee Income [Member]	'		'		'		'
Amount of gain (loss) recognized in income on derivatives	0		0		1		-1
Interest Rate Futures And Forward Commitments [Member] | Mortgage Income [Member]	'		'		'		'
Amount of gain (loss) recognized in income on derivatives	-59		-7		-28		6
Other Contracts [Member] | Capital Markets Fee Income [Member]	'		'		'		'
Amount of gain (loss) recognized in income on derivatives	$1		$2		$10		$7
[1]	Capital markets fee income is included in Other income on the consolidated statements of income.

Derivative_Financial_Instrumen5

Derivative Financial Instruments and Hedging Activities (Offsetting Derivatives) (Details) (USD $)	Sep. 30, 2013		Dec. 31, 2012
In Millions, unless otherwise specified
Offsetting Derivative Asset Securities Purchased Under Agreements to Resell Securities Borrowed [Abstract]	'		'
Gross amounts subject to offsetting, assets	$1,245		$1,900
Gross amounts not subject to offsetting, assets	56		27
Gross amounts recognized	1,301		1,927
Net amounts	793	[1]	1,095	[1]
Derivative Assets	508		832
Financial instruments	10		11
Cash collateral received/posted	0	[1]	88	[1]
Net amounts presented in the consolidated balance sheets	498		733
Derivative Liabilities	65		730
Offsetting Derivative Liability Securities Sold Under Agreements to Resell Securities Loaned [Abstract]	'		'
Gross Amounts subject to offsetting, liabilities	1,318		1,820
Gross amounts not subject to offsetting, liabilities	32		5
Gross amounts subject to offsetting	1,350		1,825
Net amounts	1,285	[1]	1,095	[1]
Financial instruments	0		0
Cash collateral received/posted	47	[1]	678	[1]
Net amounts presented in the consolidated balance sheets	18		52
Cash collateral received, offset	52		55
Cash collateral posted, offset	544		827
Additional cash collateral posted	$62		$185
[1]	Cash collateral totals are for netting counterparties only. In 2013, Regions began netting cash collateral received and posted against the net derivative asset or liability. At September 30, 2013, gross amounts of derivative assets and liabilities offset in the consolidated balance sheets presented above include cash collateral received of $52 million and cash collateral posted of $544 million, respectively. The cash collateral posted does not include the additional collateral posted in the form of an independent amount of $62 million. At December 31, 2012, cash collateral received and posted was not offset in the consolidated balance sheets. At December 31, 2012, the gross amounts of derivative assets and liabilities not offset in the consolidated balance sheets presented above include cash collateral received of $55 million and cash collateral posted of $827 million, respectively. The cash collateral posted includes the additional collateral posted in the form of an independent amount of $185 million.

Derivative_Financial_Instrumen6

Derivative Financial Instruments And Hedging Activities (Narrative) (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012	Dec. 31, 2010
Disclosure Derivative Financial Instruments And Hedging Activities Narrative [Abstract]	'	'	'	'	'	'
Cash Flow Hedge Gain (Loss) Reclassified Into Oci After Tax	'	'	$70,000,000	$101,000,000	'	'
Pre-tax income related to amortization of cash flow hedges of loan and debt instruments	12,000,000	15,000,000	35,000,000	14,000,000	'	'
Cash flow hedge gain reclassified from other comprehensive income into earnings	'	'	107,000,000	'	'	'
Pre-tax net income related to amortization of discontinued cash flow hedges	'	'	49,000,000	'	'	'
Notional amount of interest rate lock commitments	387,000,000	'	387,000,000	'	775,000,000	'
Notional amount of forward rate commitments	895,000,000	'	895,000,000	'	1,900,000,000	'
Notional amount of forward rate commitments and futures contracts to hedge against mortgage servicing rights	3,200,000,000	'	3,200,000,000	'	4,700,000,000	'
Net credit risk on all trading and other derivative positions	518,000,000	'	518,000,000	'	713,000,000	'
Maximum potential future exposure on swap participations	41,000,000	'	41,000,000	'	'	'
Additional collateral related to derivative instruments with credit risk	62,000,000	'	62,000,000	'	'	195,000,000
Net fair value contracts containing credit-related termination liability position	322,000,000	'	322,000,000	'	'	'
Posted collateral - contracts containing credit-related termination provisions	365,000,000	'	365,000,000	'	'	'
Net fair value contracts not containing credit-related termination liability position	215,000,000	'	215,000,000	'	'	'
Posted collateral - contracts that do not contain credit-related termination provisions	236,000,000	'	236,000,000	'	'	'
Aggregate fair value of all derivative instruments with credit risk	396,000,000	'	396,000,000	'	499,000,000	'
Posted collateral related to derivative instruments with credit risk	$438,000,000	'	$438,000,000	'	$641,000,000	'

Fair_Value_Measurements_Schedu

Fair Value Measurements (Schedule Of Assets And Liabilities At Fair Value Measured On A Recurring Basis And Non-Recurring Basis) (Details) (USD $)

3 Months Ended

9 Months Ended

In Millions, unless otherwise specified

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Jun. 30, 2013

Dec. 31, 2012

Jun. 30, 2012

Dec. 31, 2011

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Available-for-sale Securities, Fair Value Disclosure

$21,630

'

$21,630

'

'

$27,244

'

'

Mortgage loans held for sale

611

'

611

'

'

1,282

'

'

Mortgage servicing rights

281

176

281

176

276

191

179

182

Derivative Assets

508

'

508

'

'

832

'

'

Derivative Liabilities

65

'

65

'

'

730

'

'

Loans held for sale

611

'

611

'

'

1,282

'

'

Federal Reserve Bank excluded from fair value measurement

495

'

495

'

'

484

'

'

Federal Home Loan Bank Stock excluded from fair value measurement

67

'

67

'

'

73

'

'

US Treasury Securities [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Available-for-sale Securities, Fair Value Disclosure

52

'

52

'

'

52

'

'

Obligations of States and Political Subdivisions [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Available-for-sale Securities, Fair Value Disclosure

5

'

5

'

'

9

'

'

Residential Agency [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Available-for-sale Securities, Fair Value Disclosure

15,905

'

15,905

'

'

21,277

'

'

Commercial Agency [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Available-for-sale Securities, Fair Value Disclosure

855

'

855

'

'

725

'

'

Equity Securities [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Available-for-sale Securities, Fair Value Disclosure

697

'

697

'

'

682

'

'

Federal Agency Securities [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Available-for-sale Securities, Fair Value Disclosure

99

'

99

'

'

553

'

'

Residential Non-Agency [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Available-for-sale Securities, Fair Value Disclosure

10

'

10

'

'

13

'

'

Commercial Non-Agency [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Available-for-sale Securities, Fair Value Disclosure

1,193

'

1,193

'

'

1,098

'

'

Corporate and Other Debt Securities [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Available-for-sale Securities, Fair Value Disclosure

2,814

'

2,814

'

'

2,835

'

'

Mortgage Servicing Rights [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Included in Earnings, Assets

-9

[1]

-19

[1]

17

[1]

-50

[1]

'

'

'

'

Assets included in other comprehensive income (loss)

0

'

'

'

'

'

'

'

Asset purchase

14

16

73

44

'

'

'

'

Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value

281

176

281

176

276

191

179

182

Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers out of Level 3

0

0

'

'

'

'

'

'

Level 1 [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Trading account securities

119

'

119

'

'

116

'

'

Available-for-sale Securities, Fair Value Disclosure

187

'

187

'

'

177

'

'

Derivative Assets

0

'

0

'

'

0

'

'

Derivative Liabilities

0

'

0

'

'

0

'

'

Loans held for sale

0

'

0

'

'

0

'

'

Level 1 [Member] | Recurring Fair Value Measurements [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Trading account securities

119

'

119

'

'

116

'

'

Available-for-sale Securities, Fair Value Disclosure

187

'

187

'

'

177

'

'

Mortgage loans held for sale

0

'

0

'

'

0

'

'

Mortgage servicing rights

0

'

0

'

'

0

'

'

Derivative Assets

0

'

0

'

'

0

'

'

Derivative Liabilities

0

'

0

'

'

0

'

'

Level 1 [Member] | Recurring Fair Value Measurements [Member] | US Treasury Securities [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Available-for-sale Securities, Fair Value Disclosure

52

'

52

'

'

52

'

'

Level 1 [Member] | Recurring Fair Value Measurements [Member] | Obligations of States and Political Subdivisions [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Available-for-sale Securities, Fair Value Disclosure

0

'

0

'

'

0

'

'

Level 1 [Member] | Recurring Fair Value Measurements [Member] | Residential Agency [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Available-for-sale Securities, Fair Value Disclosure

0

'

0

'

'

0

'

'

Level 1 [Member] | Recurring Fair Value Measurements [Member] | Commercial Agency [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Available-for-sale Securities, Fair Value Disclosure

0

'

0

'

'

0

'

'

Level 1 [Member] | Recurring Fair Value Measurements [Member] | Equity Securities [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Available-for-sale Securities, Fair Value Disclosure

135

[2]

'

135

[2]

'

'

125

[2]

'

'

Level 1 [Member] | Recurring Fair Value Measurements [Member] | Federal Agency Securities [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Available-for-sale Securities, Fair Value Disclosure

0

'

0

'

'

0

'

'

Level 1 [Member] | Recurring Fair Value Measurements [Member] | Residential Non-Agency [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Available-for-sale Securities, Fair Value Disclosure

0

'

0

'

'

0

'

'

Level 1 [Member] | Recurring Fair Value Measurements [Member] | Commercial Non-Agency [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Available-for-sale Securities, Fair Value Disclosure

0

'

0

'

'

0

'

'

Level 1 [Member] | Recurring Fair Value Measurements [Member] | Corporate and Other Debt Securities [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Available-for-sale Securities, Fair Value Disclosure

0

'

0

'

'

0

'

'

Level 1 [Member] | Recurring Fair Value Measurements [Member] | Interest Rate Swaps [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Derivative Liabilities

0

'

0

'

'

0

'

'

Level 1 [Member] | Recurring Fair Value Measurements [Member] | Interest Rate Options [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Derivative Liabilities

0

'

0

'

'

0

'

'

Level 1 [Member] | Recurring Fair Value Measurements [Member] | Interest Rate Futures And Forward Commitments [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Derivative Liabilities

0

'

0

'

'

0

'

'

Level 1 [Member] | Recurring Fair Value Measurements [Member] | Other Contracts [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Derivative Liabilities

0

'

0

'

'

0

'

'

Level 1 [Member] | Nonrecurring Fair Value Measurements [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Loans held for sale

0

'

0

'

'

0

'

'

Foreclosed property, other real estate and equipment

0

'

0

'

'

0

'

'

Level 2 [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Trading account securities

0

'

0

'

'

0

'

'

Available-for-sale Securities, Fair Value Disclosure

21,431

'

21,431

'

'

27,052

'

'

Derivative Assets

1,289

'

1,289

'

'

1,893

'

'

Derivative Liabilities

1,350

'

1,350

'

'

1,825

'

'

Loans held for sale

611

'

611

'

'

1,282

'

'

Level 2 [Member] | Recurring Fair Value Measurements [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Trading account securities

0

'

0

'

'

0

'

'

Available-for-sale Securities, Fair Value Disclosure

20,869

'

20,869

'

'

26,495

'

'

Mortgage loans held for sale

611

'

611

'

'

1,282

'

'

Mortgage servicing rights

0

'

0

'

'

0

'

'

Derivative Assets

1,289

'

1,289

'

'

1,905

'

'

Derivative Liabilities

1,350

'

1,350

'

'

1,825

'

'

Level 2 [Member] | Recurring Fair Value Measurements [Member] | US Treasury Securities [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Available-for-sale Securities, Fair Value Disclosure

0

'

0

'

'

0

'

'

Level 2 [Member] | Recurring Fair Value Measurements [Member] | Obligations of States and Political Subdivisions [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Available-for-sale Securities, Fair Value Disclosure

5

'

5

'

'

9

'

'

Level 2 [Member] | Recurring Fair Value Measurements [Member] | Residential Agency [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Available-for-sale Securities, Fair Value Disclosure

15,905

'

15,905

'

'

21,277

'

'

Level 2 [Member] | Recurring Fair Value Measurements [Member] | Commercial Agency [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Available-for-sale Securities, Fair Value Disclosure

855

'

855

'

'

725

'

'

Level 2 [Member] | Recurring Fair Value Measurements [Member] | Equity Securities [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Available-for-sale Securities, Fair Value Disclosure

0

[2]

'

0

[2]

'

'

0

[2]

'

'

Level 2 [Member] | Recurring Fair Value Measurements [Member] | Federal Agency Securities [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Available-for-sale Securities, Fair Value Disclosure

99

'

99

'

'

553

'

'

Level 2 [Member] | Recurring Fair Value Measurements [Member] | Residential Non-Agency [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Available-for-sale Securities, Fair Value Disclosure

0

'

0

'

'

0

'

'

Level 2 [Member] | Recurring Fair Value Measurements [Member] | Commercial Non-Agency [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Available-for-sale Securities, Fair Value Disclosure

1,193

'

1,193

'

'

1,098

'

'

Level 2 [Member] | Recurring Fair Value Measurements [Member] | Corporate and Other Debt Securities [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Available-for-sale Securities, Fair Value Disclosure

2,812

'

2,812

'

'

2,833

'

'

Level 2 [Member] | Recurring Fair Value Measurements [Member] | Interest Rate Swaps [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Derivative Assets

1,237

'

1,237

'

'

1,861

'

'

Derivative Liabilities

1,283

'

1,283

'

'

1,776

'

'

Level 2 [Member] | Recurring Fair Value Measurements [Member] | Interest Rate Options [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Derivative Assets

3

'

3

'

'

3

'

'

Derivative Liabilities

3

'

3

'

'

4

'

'

Level 2 [Member] | Recurring Fair Value Measurements [Member] | Interest Rate Futures And Forward Commitments [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Derivative Assets

7

'

7

'

'

10

'

'

Derivative Liabilities

23

'

23

'

'

13

'

'

Level 2 [Member] | Recurring Fair Value Measurements [Member] | Other Contracts [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Derivative Assets

42

'

42

'

'

31

'

'

Derivative Liabilities

41

'

41

'

'

32

'

'

Level 2 [Member] | Nonrecurring Fair Value Measurements [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Loans held for sale

0

'

0

'

'

0

'

'

Foreclosed property, other real estate and equipment

60

'

60

'

'

41

'

'

Level 3 [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Trading account securities

0

'

0

'

'

0

'

'

Available-for-sale Securities, Fair Value Disclosure

12

'

12

'

'

15

'

'

Derivative Assets

12

'

12

'

'

22

'

'

Derivative Liabilities

0

'

0

'

'

0

'

'

Loans held for sale

62

'

62

'

'

101

'

'

Level 3 [Member] | Recurring Fair Value Measurements [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Trading account securities

0

'

0

'

'

0

'

'

Available-for-sale Securities, Fair Value Disclosure

12

'

12

'

'

15

'

'

Mortgage loans held for sale

0

'

0

'

'

0

'

'

Mortgage servicing rights

281

'

281

'

'

191

'

'

Derivative Assets

12

'

12

'

'

22

'

'

Derivative Liabilities

0

'

0

'

'

0

'

'

Level 3 [Member] | Recurring Fair Value Measurements [Member] | US Treasury Securities [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Available-for-sale Securities, Fair Value Disclosure

0

'

0

'

'

0

'

'

Level 3 [Member] | Recurring Fair Value Measurements [Member] | Obligations of States and Political Subdivisions [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Available-for-sale Securities, Fair Value Disclosure

0

'

0

'

'

0

'

'

Level 3 [Member] | Recurring Fair Value Measurements [Member] | Residential Agency [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Available-for-sale Securities, Fair Value Disclosure

0

'

0

'

'

0

'

'

Level 3 [Member] | Recurring Fair Value Measurements [Member] | Commercial Agency [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Available-for-sale Securities, Fair Value Disclosure

0

'

0

'

'

0

'

'

Level 3 [Member] | Recurring Fair Value Measurements [Member] | Equity Securities [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Available-for-sale Securities, Fair Value Disclosure

0

[2]

'

0

[2]

'

'

0

[2]

'

'

Level 3 [Member] | Recurring Fair Value Measurements [Member] | Federal Agency Securities [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Available-for-sale Securities, Fair Value Disclosure

0

'

0

'

'

0

'

'

Level 3 [Member] | Recurring Fair Value Measurements [Member] | Residential Non-Agency [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Available-for-sale Securities, Fair Value Disclosure

10

'

10

'

'

13

'

'

Level 3 [Member] | Recurring Fair Value Measurements [Member] | Commercial Non-Agency [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Available-for-sale Securities, Fair Value Disclosure

0

'

0

'

'

0

'

'

Level 3 [Member] | Recurring Fair Value Measurements [Member] | Corporate and Other Debt Securities [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Available-for-sale Securities, Fair Value Disclosure

2

'

2

'

'

2

'

'

Level 3 [Member] | Recurring Fair Value Measurements [Member] | Interest Rate Swaps [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Derivative Assets

0

'

0

'

'

0

'

'

Derivative Liabilities

0

'

0

'

'

0

'

'

Level 3 [Member] | Recurring Fair Value Measurements [Member] | Interest Rate Options [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Derivative Assets

12

'

12

'

'

22

'

'

Derivative Liabilities

0

'

0

'

'

0

'

'

Level 3 [Member] | Recurring Fair Value Measurements [Member] | Interest Rate Futures And Forward Commitments [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Derivative Assets

0

'

0

'

'

0

'

'

Derivative Liabilities

0

'

0

'

'

0

'

'

Level 3 [Member] | Recurring Fair Value Measurements [Member] | Other Contracts [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Derivative Assets

0

'

0

'

'

0

'

'

Derivative Liabilities

0

'

0

'

'

0

'

'

Level 3 [Member] | Nonrecurring Fair Value Measurements [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Loans held for sale

29

'

29

'

'

51

'

'

Foreclosed property, other real estate and equipment

21

'

21

'

'

40

'

'

Fair Value [Member] | Recurring Fair Value Measurements [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Trading account securities

119

'

119

'

'

116

'

'

Available-for-sale Securities, Fair Value Disclosure

21,068

'

21,068

'

'

26,687

'

'

Mortgage loans held for sale

611

'

611

'

'

1,282

'

'

Mortgage servicing rights

281

'

281

'

'

191

'

'

Derivative Assets

1,301

'

1,301

'

'

1,927

'

'

Derivative Liabilities

1,350

'

1,350

'

'

1,825

'

'

Fair Value [Member] | Recurring Fair Value Measurements [Member] | US Treasury Securities [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Available-for-sale Securities, Fair Value Disclosure

52

'

52

'

'

52

'

'

Fair Value [Member] | Recurring Fair Value Measurements [Member] | Obligations of States and Political Subdivisions [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Available-for-sale Securities, Fair Value Disclosure

5

'

5

'

'

9

'

'

Fair Value [Member] | Recurring Fair Value Measurements [Member] | Residential Agency [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Available-for-sale Securities, Fair Value Disclosure

15,905

'

15,905

'

'

21,277

'

'

Fair Value [Member] | Recurring Fair Value Measurements [Member] | Commercial Agency [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Available-for-sale Securities, Fair Value Disclosure

855

'

855

'

'

725

'

'

Fair Value [Member] | Recurring Fair Value Measurements [Member] | Equity Securities [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Available-for-sale Securities, Fair Value Disclosure

135

[2]

'

135

[2]

'

'

125

[2]

'

'

Fair Value [Member] | Recurring Fair Value Measurements [Member] | Federal Agency Securities [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Available-for-sale Securities, Fair Value Disclosure

99

'

99

'

'

553

'

'

Fair Value [Member] | Recurring Fair Value Measurements [Member] | Residential Non-Agency [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Available-for-sale Securities, Fair Value Disclosure

10

'

10

'

'

13

'

'

Fair Value [Member] | Recurring Fair Value Measurements [Member] | Commercial Non-Agency [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Available-for-sale Securities, Fair Value Disclosure

1,193

'

1,193

'

'

1,098

'

'

Fair Value [Member] | Recurring Fair Value Measurements [Member] | Corporate and Other Debt Securities [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Available-for-sale Securities, Fair Value Disclosure

2,814

'

2,814

'

'

2,835

'

'

Fair Value [Member] | Recurring Fair Value Measurements [Member] | Interest Rate Swaps [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Derivative Assets

1,237

'

1,237

'

'

1,861

'

'

Derivative Liabilities

1,283

'

1,283

'

'

1,776

'

'

Fair Value [Member] | Recurring Fair Value Measurements [Member] | Interest Rate Options [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Derivative Assets

15

'

15

'

'

25

'

'

Derivative Liabilities

3

'

3

'

'

4

'

'

Fair Value [Member] | Recurring Fair Value Measurements [Member] | Interest Rate Futures And Forward Commitments [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Derivative Assets

7

'

7

'

'

10

'

'

Derivative Liabilities

23

'

23

'

'

13

'

'

Fair Value [Member] | Recurring Fair Value Measurements [Member] | Other Contracts [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Derivative Assets

42

'

42

'

'

31

'

'

Derivative Liabilities

41

'

41

'

'

32

'

'

Fair Value [Member] | Nonrecurring Fair Value Measurements [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Loans held for sale

29

'

29

'

'

51

'

'

Foreclosed property, other real estate and equipment

81

'

81

'

'

81

'

'

Trading Account Assets [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Included in Earnings, Assets

'

'

'

3

[3],[4]

'

'

'

'

Asset purchase

'

'

'

2,620

[3]

'

'

'

'

Settlements

'

'

'

-2,573

[3]

'

'

'

'

Liabilities Disposed Of By Method Other Than Sale In Period Of Disposition Gain Loss On Disposition

'

'

'

-241

[3]

'

'

'

'

Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value

'

0

[3]

'

0

[3]

'

'

'

191

[3]

Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3

'

'

'

0

[3]

'

'

'

'

Trading Account Assets [Member] | Obligations of States and Political Subdivisions [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Included in Earnings, Assets

'

'

'

-3

[5]

'

'

'

'

Asset purchase

'

'

'

4

[5]

'

'

'

'

Settlements

'

'

'

-16

[5]

'

'

'

'

Liabilities Disposed Of By Method Other Than Sale In Period Of Disposition Gain Loss On Disposition

'

'

'

-124

[5]

'

'

'

'

Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value

'

0

[5]

'

0

[5]

'

'

'

139

[5]

Trading Account Assets [Member] | Commercial Agency [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Included in Earnings, Assets

'

'

'

2

[5]

'

'

'

'

Asset purchase

'

'

'

368

[5]

'

'

'

'

Settlements

'

'

'

-317

[5]

'

'

'

'

Liabilities Disposed Of By Method Other Than Sale In Period Of Disposition Gain Loss On Disposition

'

'

'

-104

[5]

'

'

'

'

Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value

'

0

[5]

'

0

[5]

'

'

'

51

[5]

Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3

'

'

'

0

[5]

'

'

'

'

Trading Account Assets [Member] | Other Securities [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Included in Earnings, Assets

'

'

'

4

[5]

'

'

'

'

Asset purchase

'

'

'

2,248

[5]

'

'

'

'

Settlements

'

'

'

-2,240

[5]

'

'

'

'

Liabilities Disposed Of By Method Other Than Sale In Period Of Disposition Gain Loss On Disposition

'

'

'

-13

[5]

'

'

'

'

Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value

'

0

[5]

'

0

[5]

'

'

'

1

[5]

Securities Available For Sale [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Included in Earnings, Assets

0

'

'

'

'

'

'

'

Assets included in other comprehensive income (loss)

0

1

0

-1

'

'

'

'

Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales

'

0

0

-16

'

'

'

'

Asset purchase

0

103

0

103

'

'

'

'

Settlements

-1

-1

-3

-5

'

'

'

'

Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value

12

119

12

119

13

15

16

36

Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3

'

0

0

3

'

'

'

'

Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers out of Level 3

0

0

0

-1

'

'

'

'

Securities Available For Sale [Member] | Obligations of States and Political Subdivisions [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Assets included in other comprehensive income (loss)

'

'

'

-2

'

'

'

'

Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales

'

'

'

-16

'

'

'

'

Settlements

'

'

'

-2

'

'

'

'

Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value

'

0

'

0

'

'

'

20

Securities Available For Sale [Member] | Residential Non-Agency [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Included in Earnings, Assets

0

'

'

'

'

'

'

'

Assets included in other comprehensive income (loss)

0

'

'

0

'

'

'

'

Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales

'

0

'

0

'

'

'

'

Asset purchase

0

'

'

'

'

'

'

'

Settlements

-1

-1

-3

-3

'

'

'

'

Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value

10

13

10

13

11

13

14

16

Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers out of Level 3

0

0

'

'

'

'

'

'

Securities Available For Sale [Member] | Commercial Non-Agency [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Assets included in other comprehensive income (loss)

'

1

'

1

'

'

'

'

Asset purchase

'

103

'

103

'

'

'

'

Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value

'

104

'

104

'

'

'

'

Securities Available For Sale [Member] | Corporate and Other Debt Securities [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Included in Earnings, Assets

0

'

'

'

'

'

'

'

Assets included in other comprehensive income (loss)

0

'

'

'

'

'

'

'

Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales

'

0

'

'

'

'

'

'

Asset purchase

0

'

'

'

'

'

'

'

Settlements

0

'

'

'

'

'

'

'

Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value

2

2

2

2

2

2

2

'

Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3

'

0

0

3

'

'

'

'

Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers out of Level 3

0

0

0

-1

'

'

'

'

Trading Liabilities [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Purchases

'

'

'

49

[3]

'

'

'

'

Liabilities Disposed Of By Method Other Than Sale In Period Of Disposition Gain Loss On Disposition

'

'

'

-52

[3]

'

'

'

'

Trading Liabilities [Member] | Commercial Agency [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Purchases

'

'

'

37

'

'

'

'

Liabilities Disposed Of By Method Other Than Sale In Period Of Disposition Gain Loss On Disposition

'

'

'

-42

'

'

'

'

Trading Liabilities [Member] | Other Securities [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Purchases

'

'

'

12

'

'

'

'

Liabilities Disposed Of By Method Other Than Sale In Period Of Disposition Gain Loss On Disposition

'

'

'

-10

'

'

'

'

Total Derivatives Net [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Included in Earnings, Assets

24

[1]

82

[1]

65

[1]

193

[1]

'

'

'

'

Settlements

-14

-71

-75

-165

'

'

'

'

Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value

12

41

12

41

2

22

30

13

Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers out of Level 3

0

0

'

'

'

'

'

'

Discounted Cash Flow [Member] | Recurring Fair Value Measurements [Member] | Mortgage Servicing Rights [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Mortgage servicing rights

281

[6]

'

281

[6]

'

'

191

[7]

'

'

Discounted Cash Flow [Member] | Securities Available For Sale [Member] | Recurring Fair Value Measurements [Member] | Residential Non-Agency [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Available-for-sale Securities, Fair Value Disclosure

10

'

10

'

'

13

'

'

Discounted Cash Flow [Member] | Securities Available For Sale [Member] | Recurring Fair Value Measurements [Member] | Corporate and Other Debt Securities [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Available-for-sale Securities, Fair Value Disclosure

2

'

2

'

'

2

'

'

Discounted Cash Flow [Member] | Total Derivatives Net [Member] | Recurring Fair Value Measurements [Member] | Interest Rate Options [Member]

'

'

'

'

'

'

'

'

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

Derivative Assets

$12

'

$12

'

'

$22

'

'

[1]

Included in mortgage income.

[2]

Excludes Federal Reserve Bank and Federal Home Loan Bank Stock totaling $495 million and $67 million at September 30, 2013 and $484 million and $73 million at December 31, 2012, respectively.

[3]

All amounts related to trading account assets and trading account liabilities are related to Morgan Keegan (see Note 2 for discussion of sale of Morgan Keegan).

[4]

Included in discontinued operations, on a net basis.

[5]

Income from trading account assets primarily represents gains/(losses) on disposition, which inherently includes commissions on security transactions during the period.

[6]

See Note 5 for additional disclosures related to assumptions used in the fair value calculation for mortgage servicing rights.

[7]

See Note 7 to the consolidated financial statements of the 2012 Annual Report on Form 10-K for additional disclosures related to assumptions used in the fair value calculation for mortgage servicing rights.

Fair_Value_Measurements_Rollfo

Fair Value Measurements (Rollforward For Assets And Liabilities Measured At Fair Value On A Recurring Basis With Level 3 Significant Unobservable Inputs) (Details) (USD $)	3 Months Ended				9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2013		Sep. 30, 2012
Mortgage Servicing Rights [Member]	'		'		'		'
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]	'		'		'		'
Beginning balance, Assets, Net	$276		$179		$191		$182
Included in Earnings, Assets	-9	[1]	-19	[1]	17	[1]	-50	[1]
Asset purchase	14		16		73		44
Transfers Out Of Level 3	0		0		'		'
Ending balance, Assets, Net	281		176		281		176
Assets included in other comprehensive income (loss)	0		'		'		'
Trading Liabilities [Member]	'		'		'		'
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]	'		'		'		'
Liabilities Disposed Of By Method Other Than Sale In Period Of Disposition Gain Loss On Disposition	'		'		'		-52	[2]
Beginning balance, Liabilities, Net	'		'		'		7	[2]
Purchases, Liabilities	'		'		'		49	[2]
Settlements, Liabilities, Net	'		'		'		-4	[2]
Ending balance, Liabilities, Net	'		0	[2]	'		0	[2]
Trading Liabilities [Member] | Commercial Agency [Member]	'		'		'		'
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]	'		'		'		'
Liabilities Disposed Of By Method Other Than Sale In Period Of Disposition Gain Loss On Disposition	'		'		'		-42
Beginning balance, Liabilities, Net	'		'		'		5
Purchases, Liabilities	'		'		'		37
Settlements, Liabilities, Net	'		'		'		0
Trading Liabilities [Member] | Other Securities [Member]	'		'		'		'
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]	'		'		'		'
Liabilities Disposed Of By Method Other Than Sale In Period Of Disposition Gain Loss On Disposition	'		'		'		-10
Beginning balance, Liabilities, Net	'		'		'		2
Purchases, Liabilities	'		'		'		12
Settlements, Liabilities, Net	'		'		'		-4
Ending balance, Liabilities, Net	'		0		'		0
Derivatives, Net [Member]	'		'		'		'
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]	'		'		'		'
Beginning balance, Assets, Net	2		30		22		13
Included in Earnings, Assets	24	[1]	82	[1]	65	[1]	193	[1]
Settlements	-14		-71		-75		-165
Transfers Out Of Level 3	0		0		'		'
Ending balance, Assets, Net	12		41		12		41
Trading Account Assets [Member]	'		'		'		'
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]	'		'		'		'
Liabilities Disposed Of By Method Other Than Sale In Period Of Disposition Gain Loss On Disposition	'		'		'		-241	[2]
Beginning balance, Assets, Net	'		'		'		191	[2]
Included in Earnings, Assets	'		'		'		3	[2],[3]
Asset purchase	'		'		'		2,620	[2]
Settlements	'		'		'		-2,573	[2]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3	'		'		'		0	[2]
Ending balance, Assets, Net	'		0	[2]	'		0	[2]
Trading Account Assets [Member] | Commercial Agency [Member]	'		'		'		'
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]	'		'		'		'
Liabilities Disposed Of By Method Other Than Sale In Period Of Disposition Gain Loss On Disposition	'		'		'		-104	[4]
Beginning balance, Assets, Net	'		'		'		51	[4]
Included in Earnings, Assets	'		'		'		2	[4]
Asset purchase	'		'		'		368	[4]
Settlements	'		'		'		-317	[4]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3	'		'		'		0	[4]
Ending balance, Assets, Net	'		0	[4]	'		0	[4]
Trading Account Assets [Member] | Other Securities [Member]	'		'		'		'
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]	'		'		'		'
Liabilities Disposed Of By Method Other Than Sale In Period Of Disposition Gain Loss On Disposition	'		'		'		-13	[4]
Beginning balance, Assets, Net	'		'		'		1	[4]
Included in Earnings, Assets	'		'		'		4	[4]
Asset purchase	'		'		'		2,248	[4]
Settlements	'		'		'		-2,240	[4]
Ending balance, Assets, Net	'		0	[4]	'		0	[4]
Trading Account Assets [Member] | Obligations of States and Political Subdivisions [Member]	'		'		'		'
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]	'		'		'		'
Liabilities Disposed Of By Method Other Than Sale In Period Of Disposition Gain Loss On Disposition	'		'		'		-124	[4]
Beginning balance, Assets, Net	'		'		'		139	[4]
Included in Earnings, Assets	'		'		'		-3	[4]
Asset purchase	'		'		'		4	[4]
Settlements	'		'		'		-16	[4]
Ending balance, Assets, Net	'		0	[4]	'		0	[4]
Securities Available For Sale [Member]	'		'		'		'
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]	'		'		'		'
Beginning balance, Assets, Net	13		16		15		36
Included in Earnings, Assets	0		'		'		'
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales	'		0		0		-16
Asset purchase	0		103		0		103
Settlements	-1		-1		-3		-5
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3	'		0		0		3
Transfers Out Of Level 3	0		0		0		-1
Ending balance, Assets, Net	12		119		12		119
Assets included in other comprehensive income (loss)	0		1		0		-1
Securities Available For Sale [Member] | Obligations of States and Political Subdivisions [Member]	'		'		'		'
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]	'		'		'		'
Beginning balance, Assets, Net	'		'		'		20
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales	'		'		'		-16
Settlements	'		'		'		-2
Ending balance, Assets, Net	'		0		'		0
Assets included in other comprehensive income (loss)	'		'		'		-2
Securities Available For Sale [Member] | Residential Non-Agency [Member]	'		'		'		'
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]	'		'		'		'
Beginning balance, Assets, Net	11		14		13		16
Included in Earnings, Assets	0		'		'		'
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales	'		0		'		0
Asset purchase	0		'		'		'
Settlements	-1		-1		-3		-3
Transfers Out Of Level 3	0		0		'		'
Ending balance, Assets, Net	10		13		10		13
Assets included in other comprehensive income (loss)	0		'		'		0
Securities Available For Sale [Member] | Commercial Non-Agency [Member]	'		'		'		'
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]	'		'		'		'
Asset purchase	'		103		'		103
Ending balance, Assets, Net	'		104		'		104
Assets included in other comprehensive income (loss)	'		1		'		1
Securities Available For Sale [Member] | Corporate and Other Debt Securities [Member]	'		'		'		'
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]	'		'		'		'
Beginning balance, Assets, Net	2		2		2		'
Included in Earnings, Assets	0		'		'		'
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales	'		0		'		'
Asset purchase	0		'		'		'
Settlements	0		'		'		'
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3	'		0		0		3
Transfers Out Of Level 3	0		0		0		-1
Ending balance, Assets, Net	2		2		2		2
Assets included in other comprehensive income (loss)	$0		'		'		'
[1]	Included in mortgage income.
[2]	All amounts related to trading account assets and trading account liabilities are related to Morgan Keegan (see Note 2 for discussion of sale of Morgan Keegan).
[3]	Included in discontinued operations, on a net basis.
[4]	Income from trading account assets primarily represents gains/(losses) on disposition, which inherently includes commissions on security transactions during the period.

Fair_Value_Measurements_Schedu1

Fair Value Measurements (Schedule Of Fair Value Adjustments Related To Non-Recurring Fair Value Measurements) (Details) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Disclosure Fair Value Measurements Schedule Of Fair Value Adjustments Related To Non Recurring Fair Value Measurements [Abstract]	'	'	'	'	'
Derivative Assets	$508	'	$508	'	$832
Loans held for sale	-16	-54	-58	-155	'
Foreclosed property, other real estate and equipment	($8)	($18)	($27)	($56)	'

Fair_Value_Measurements_Summar

Fair Value Measurements (Summary Of Quantitative Information About Level 3 Fair Value Measurements) (Details) (USD $)	Sep. 30, 2013		Jun. 30, 2013	Dec. 31, 2012		Sep. 30, 2012	Jun. 30, 2012	Dec. 31, 2011
In Millions, unless otherwise specified
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'	'		'	'	'
Securities available for sale	$21,630		'	$27,244		'	'	'
Mortgage servicing rights	281		276	191		176	179	182
Interest rate options	508		'	832		'	'	'
Loans held for sale	611		'	1,282		'	'	'
Residential Non-Agency [Member]	'		'	'		'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'	'		'	'	'
Securities available for sale	10		'	13		'	'	'
Residential Agency [Member]	'		'	'		'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'	'		'	'	'
Securities available for sale	15,905		'	21,277		'	'	'
Commercial Non-Agency [Member]	'		'	'		'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'	'		'	'	'
Securities available for sale	1,193		'	1,098		'	'	'
Corporate and Other Debt Securities [Member]	'		'	'		'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'	'		'	'	'
Securities available for sale	2,814		'	2,835		'	'	'
Discounted Cash Flow [Member] | Recurring Fair Value Measurements [Member] | Residential Non-Agency [Member] | Spread To LIBOR [Member]	'		'	'		'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'	'		'	'	'
Fair value measurement weighted-average percentage	15.00%		'	16.90%		'	'	'
Discounted Cash Flow [Member] | Recurring Fair Value Measurements [Member] | Residential Non-Agency [Member] | Weighted Average Prepayment Speed [Member]	'		'	'		'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'	'		'	'	'
Fair value measurement weighted-average percentage	10.80%		'	12.20%		'	'	'
Discounted Cash Flow [Member] | Recurring Fair Value Measurements [Member] | Residential Non-Agency [Member] | Probability of Default [Member]	'		'	'		'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'	'		'	'	'
Fair value measurement weighted-average percentage	1.30%		'	1.00%		'	'	'
Discounted Cash Flow [Member] | Recurring Fair Value Measurements [Member] | Residential Non-Agency [Member] | Loss Severity [Member]	'		'	'		'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'	'		'	'	'
Fair value measurement weighted-average percentage	39.40%		'	48.10%		'	'	'
Discounted Cash Flow [Member] | Recurring Fair Value Measurements [Member] | Residential Non-Agency [Member] | Securities Available For Sale [Member]	'		'	'		'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'	'		'	'	'
Securities available for sale	10		'	13		'	'	'
Discounted Cash Flow [Member] | Recurring Fair Value Measurements [Member] | Corporate and Other Debt Securities [Member] | Securities Available For Sale [Member]	'		'	'		'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'	'		'	'	'
Securities available for sale	2		'	2		'	'	'
Discounted Cash Flow [Member] | Recurring Fair Value Measurements [Member] | Mortgage Servicing Rights [Member]	'		'	'		'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'	'		'	'	'
Mortgage servicing rights	281	[1]	'	191	[2]	'	'	'
Discounted Cash Flow [Member] | Recurring Fair Value Measurements [Member] | Mortgage Servicing Rights [Member] | Weighted Average Prepayment Speed [Member]	'		'	'		'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'	'		'	'	'
Fair value measurement weighted-average percentage	9.40%		'	17.60%		'	'	'
Discounted Cash Flow [Member] | Recurring Fair Value Measurements [Member] | Mortgage Servicing Rights [Member] | Option-Adjusted Spread (Basis Points) [Member]	'		'	'		'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'	'		'	'	'
Fair value measurement weighted-average percentage	10.10%		'	7.50%		'	'	'
Discounted Cash Flow [Member] | Recurring Fair Value Measurements [Member] | Interest Rate Options [Member] | Weighted Average Prepayment Speed [Member]	'		'	'		'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'	'		'	'	'
Fair value measurement weighted-average percentage	9.40%		'	17.60%		'	'	'
Discounted Cash Flow [Member] | Recurring Fair Value Measurements [Member] | Interest Rate Options [Member] | Option-Adjusted Spread (Basis Points) [Member]	'		'	'		'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'	'		'	'	'
Fair value measurement weighted-average percentage	10.10%		'	7.50%		'	'	'
Discounted Cash Flow [Member] | Recurring Fair Value Measurements [Member] | Interest Rate Options [Member] | Pull-Through [Member]	'		'	'		'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'	'		'	'	'
Fair value measurement weighted-average percentage	78.40%		'	76.90%		'	'	'
Discounted Cash Flow [Member] | Recurring Fair Value Measurements [Member] | Interest Rate Options [Member] | Derivatives, Net [Member]	'		'	'		'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'	'		'	'	'
Interest rate options	12		'	22		'	'	'
Discounted Cash Flow [Member] | Recurring Fair Value Measurements [Member] | Other Securities [Member] | Comparability Adjustments [Member]	'		'	'		'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'	'		'	'	'
Fair value measurement weighted-average percentage	1.40%		'	1.00%		'	'	'
Discounted Cash Flow [Member] | Recurring Fair Value Measurements [Member] | Minimum [Member] | Residential Non-Agency [Member] | Spread To LIBOR [Member]	'		'	'		'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'	'		'	'	'
Fair value measurement percentage	5.30%		'	5.40%		'	'	'
Discounted Cash Flow [Member] | Recurring Fair Value Measurements [Member] | Minimum [Member] | Residential Non-Agency [Member] | Weighted Average Prepayment Speed [Member]	'		'	'		'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'	'		'	'	'
Fair value measurement percentage	9.10%		'	7.60%		'	'	'
Discounted Cash Flow [Member] | Recurring Fair Value Measurements [Member] | Minimum [Member] | Residential Non-Agency [Member] | Probability of Default [Member]	'		'	'		'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'	'		'	'	'
Fair value measurement percentage	1.30%		'	0.20%		'	'	'
Discounted Cash Flow [Member] | Recurring Fair Value Measurements [Member] | Minimum [Member] | Residential Non-Agency [Member] | Loss Severity [Member]	'		'	'		'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'	'		'	'	'
Fair value measurement percentage	39.40%		'	39.30%		'	'	'
Discounted Cash Flow [Member] | Recurring Fair Value Measurements [Member] | Minimum [Member] | Mortgage Servicing Rights [Member] | Weighted Average Prepayment Speed [Member]	'		'	'		'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'	'		'	'	'
Fair value measurement percentage	7.30%		'	4.70%		'	'	'
Discounted Cash Flow [Member] | Recurring Fair Value Measurements [Member] | Minimum [Member] | Mortgage Servicing Rights [Member] | Option-Adjusted Spread (Basis Points) [Member]	'		'	'		'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'	'		'	'	'
Fair value measurement percentage	7.40%		'	1.00%		'	'	'
Discounted Cash Flow [Member] | Recurring Fair Value Measurements [Member] | Minimum [Member] | Interest Rate Options [Member] | Weighted Average Prepayment Speed [Member]	'		'	'		'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'	'		'	'	'
Fair value measurement percentage	7.30%		'	4.70%		'	'	'
Discounted Cash Flow [Member] | Recurring Fair Value Measurements [Member] | Minimum [Member] | Interest Rate Options [Member] | Option-Adjusted Spread (Basis Points) [Member]	'		'	'		'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'	'		'	'	'
Fair value measurement percentage	7.40%		'	1.00%		'	'	'
Discounted Cash Flow [Member] | Recurring Fair Value Measurements [Member] | Minimum [Member] | Interest Rate Options [Member] | Pull-Through [Member]	'		'	'		'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'	'		'	'	'
Fair value measurement percentage	10.10%		'	55.70%		'	'	'
Discounted Cash Flow [Member] | Recurring Fair Value Measurements [Member] | Maximum [Member] | Residential Non-Agency [Member] | Spread To LIBOR [Member]	'		'	'		'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'	'		'	'	'
Fair value measurement percentage	69.80%		'	69.90%		'	'	'
Discounted Cash Flow [Member] | Recurring Fair Value Measurements [Member] | Maximum [Member] | Residential Non-Agency [Member] | Weighted Average Prepayment Speed [Member]	'		'	'		'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'	'		'	'	'
Fair value measurement percentage	12.40%		'	30.30%		'	'	'
Discounted Cash Flow [Member] | Recurring Fair Value Measurements [Member] | Maximum [Member] | Residential Non-Agency [Member] | Probability of Default [Member]	'		'	'		'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'	'		'	'	'
Fair value measurement percentage	1.30%		'	1.20%		'	'	'
Discounted Cash Flow [Member] | Recurring Fair Value Measurements [Member] | Maximum [Member] | Residential Non-Agency [Member] | Loss Severity [Member]	'		'	'		'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'	'		'	'	'
Fair value measurement percentage	39.40%		'	100.00%		'	'	'
Discounted Cash Flow [Member] | Recurring Fair Value Measurements [Member] | Maximum [Member] | Mortgage Servicing Rights [Member] | Weighted Average Prepayment Speed [Member]	'		'	'		'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'	'		'	'	'
Fair value measurement percentage	24.80%		'	25.90%		'	'	'
Discounted Cash Flow [Member] | Recurring Fair Value Measurements [Member] | Maximum [Member] | Mortgage Servicing Rights [Member] | Option-Adjusted Spread (Basis Points) [Member]	'		'	'		'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'	'		'	'	'
Fair value measurement percentage	23.60%		'	23.60%		'	'	'
Discounted Cash Flow [Member] | Recurring Fair Value Measurements [Member] | Maximum [Member] | Interest Rate Options [Member] | Weighted Average Prepayment Speed [Member]	'		'	'		'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'	'		'	'	'
Fair value measurement percentage	24.80%		'	25.90%		'	'	'
Discounted Cash Flow [Member] | Recurring Fair Value Measurements [Member] | Maximum [Member] | Interest Rate Options [Member] | Option-Adjusted Spread (Basis Points) [Member]	'		'	'		'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'	'		'	'	'
Fair value measurement percentage	23.60%		'	23.60%		'	'	'
Discounted Cash Flow [Member] | Recurring Fair Value Measurements [Member] | Maximum [Member] | Interest Rate Options [Member] | Pull-Through [Member]	'		'	'		'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'	'		'	'	'
Fair value measurement percentage	99.20%		'	98.80%		'	'	'
Discounted Cash Flow [Member] | Recurring Fair Value Measurements [Member] | Maximum [Member] | Other Securities [Member] | Comparability Adjustments [Member]	'		'	'		'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'	'		'	'	'
Fair value measurement percentage	1.40%		'	1.00%		'	'	'
Activity For Sales Of Similar Loans [Member] | Nonrecurring Fair Value Measurements [Member] | Loans Held For Sale [Member]	'		'	'		'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'	'		'	'	'
Loans held for sale	29		'	51		'	'	'
Property Appraisal [Member] | Nonrecurring Fair Value Measurements [Member] | Loans Held For Sale [Member] | Appraisal Compatibility Adjustment Discount [Member]	'		'	'		'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'	'		'	'	'
Fair value measurement weighted-average percentage	49.40%		'	46.30%		'	'	'
Property Appraisal [Member] | Nonrecurring Fair Value Measurements [Member] | Foreclosed Property And Other Real Estate [Member]	'		'	'		'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'	'		'	'	'
Foreclosed property and other real estate	$21		'	$40		'	'	'
Property Appraisal [Member] | Nonrecurring Fair Value Measurements [Member] | Foreclosed Property And Other Real Estate [Member] | Appraisal Compatibility Adjustment Discount [Member]	'		'	'		'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'	'		'	'	'
Fair value measurement weighted-average percentage	34.70%		'	36.20%		'	'	'
Property Appraisal [Member] | Nonrecurring Fair Value Measurements [Member] | Minimum [Member] | Loans Held For Sale [Member] | Appraisal Compatibility Adjustment Discount [Member]	'		'	'		'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'	'		'	'	'
Fair value measurement percentage	2.00%		'	8.00%		'	'	'
Property Appraisal [Member] | Nonrecurring Fair Value Measurements [Member] | Minimum [Member] | Foreclosed Property And Other Real Estate [Member] | Appraisal Compatibility Adjustment Discount [Member]	'		'	'		'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'	'		'	'	'
Fair value measurement percentage	30.00%		'	35.00%		'	'	'
Property Appraisal [Member] | Nonrecurring Fair Value Measurements [Member] | Maximum [Member] | Loans Held For Sale [Member] | Appraisal Compatibility Adjustment Discount [Member]	'		'	'		'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'	'		'	'	'
Fair value measurement percentage	98.00%		'	94.00%		'	'	'
Property Appraisal [Member] | Nonrecurring Fair Value Measurements [Member] | Maximum [Member] | Foreclosed Property And Other Real Estate [Member] | Appraisal Compatibility Adjustment Discount [Member]	'		'	'		'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'	'		'	'	'
Fair value measurement percentage	100.00%		'	100.00%		'	'	'
Comparable Evaluated Quote [Member] | Recurring Fair Value Measurements [Member] | Other Securities [Member] | Evaluated Quote On Same Issuer/Comparable Bond [Member]	'		'	'		'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'	'		'	'	'
Fair value measurement weighted-average percentage	99.50%		'	99.60%		'	'	'
Comparable Evaluated Quote [Member] | Recurring Fair Value Measurements [Member] | Minimum [Member] | Other Securities [Member] | Evaluated Quote On Same Issuer/Comparable Bond [Member]	'		'	'		'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'	'		'	'	'
Fair value measurement percentage	98.60%		'	99.10%		'	'	'
Comparable Evaluated Quote [Member] | Recurring Fair Value Measurements [Member] | Maximum [Member] | Other Securities [Member] | Evaluated Quote On Same Issuer/Comparable Bond [Member]	'		'	'		'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'	'		'	'	'
Fair value measurement percentage	100.00%		'	100.00%		'	'	'
[1]	See Note 5 for additional disclosures related to assumptions used in the fair value calculation for mortgage servicing rights.
[2]	See Note 7 to the consolidated financial statements of the 2012 Annual Report on Form 10-K for additional disclosures related to assumptions used in the fair value calculation for mortgage servicing rights.

Fair_Value_Measurements_Summar1

Fair Value Measurements (Summary Of Difference Between Aggregate Fair Value And Aggregate Unpaid Principal Balance For Mortgage Loans Held For Sale Measured At Fair Value) (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]	'	'
Aggregate Fair Value	$611	$1,282
Aggregate Unpaid Principal	589	1,235
Aggregate Fair Value Less Aggregate Unpaid Principal	$22	$47

Fair_Value_Measurements_Summar2

Fair Value Measurements (Summary Of Net Gains (Losses) From Changes In Fair Value) (Details) (Loans Held For Sale [Member], USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Loans Held For Sale [Member]	'	'	'	'
Fair Value, Option, Quantitative Disclosures [Line Items]	'	'	'	'
Net gains (losses) resulting from changes in fair value	$38	$19	($24)	$31

Fair_Value_Measurements_Schedu2

Fair Value Measurements (Schedule Of Carrying Amounts And Estimated Fair Values Of Financial Instruments) (Details) (USD $)	Sep. 30, 2013		Dec. 31, 2012
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Securities available for sale	$21,630,000,000		$27,244,000,000
Loans held for sale	611,000,000		1,282,000,000
Other interest-earning assets	105,000,000		900,000,000
Derivative Assets	508,000,000		832,000,000
Derivative Liabilities	65,000,000		730,000,000
Short-term borrowings	1,773,000,000		1,574,000,000
Long-term borrowings	4,838,000,000		5,861,000,000
Indemnification obligation	244,000,000		'
Fair value discount on loan portfolio, amount	5,500,000,000		6,600,000,000
Fair value discount on loan portfolio, rate	7.60%		9.40%
Leases, carrying amount excluded	1,800,000,000		1,500,000,000
Carrying Amount [Member]	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Cash and cash equivalents	3,859,000,000		5,489,000,000
Trading account securities	119,000,000		116,000,000
Securities held to maturity	2,388,000,000		10,000,000
Securities available for sale	21,630,000,000		27,244,000,000
Loans held for sale	673,000,000		1,383,000,000
Loans (excluding leases), net of unearned income and allowance for loan losses	72,574,000,000	[1],[2]	70,574,000,000	[3],[4]
Other interest-earning assets	105,000,000		900,000,000
Derivative Assets	1,301,000,000		1,915,000,000
Derivative Liabilities	1,350,000,000		1,825,000,000
Deposits	92,321,000,000		95,474,000,000
Short-term borrowings	1,773,000,000		1,574,000,000
Long-term borrowings	4,838,000,000		5,861,000,000
Loan commitments and letters of credit	113,000,000		121,000,000
Indemnification obligation	244,000,000		345,000,000
Estimate of Fair Value [Member]	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Cash and cash equivalents	3,859,000,000	[5]	5,489,000,000	[5]
Trading account securities	119,000,000	[5]	116,000,000	[5]
Securities held to maturity	2,385,000,000	[5]	11,000,000	[5]
Securities available for sale	21,630,000,000	[5]	27,244,000,000	[5]
Loans held for sale	673,000,000	[5]	1,383,000,000	[5]
Loans (excluding leases), net of unearned income and allowance for loan losses	67,029,000,000	[1],[2],[5]	63,961,000,000	[3],[4],[5]
Other interest-earning assets	105,000,000	[5]	900,000,000	[5]
Derivative Assets	1,301,000,000	[5]	1,915,000,000	[5]
Derivative Liabilities	1,350,000,000	[5]	1,825,000,000	[5]
Deposits	92,325,000,000	[5]	95,528,000,000	[5]
Short-term borrowings	1,773,000,000	[5]	1,574,000,000	[5]
Long-term borrowings	5,072,000,000	[5]	6,138,000,000	[5]
Loan commitments and letters of credit	618,000,000	[5]	667,000,000	[5]
Indemnification obligation	217,000,000	[5]	329,000,000	[5]
Level 1 [Member]	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Cash and cash equivalents	3,859,000,000		5,489,000,000
Trading account securities	119,000,000		116,000,000
Securities held to maturity	2,000,000		2,000,000
Securities available for sale	187,000,000		177,000,000
Loans held for sale	0		0
Loans (excluding leases), net of unearned income and allowance for loan losses	0	[1],[2]	0	[3],[4]
Other interest-earning assets	0		0
Derivative Assets	0		0
Derivative Liabilities	0		0
Deposits	0		0
Short-term borrowings	0		0
Long-term borrowings	886,000,000		1,037,000,000
Loan commitments and letters of credit	0		0
Indemnification obligation	0		0
Level 2 [Member]	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Cash and cash equivalents	0		0
Trading account securities	0		0
Securities held to maturity	2,383,000,000		9,000,000
Securities available for sale	21,431,000,000		27,052,000,000
Loans held for sale	611,000,000		1,282,000,000
Loans (excluding leases), net of unearned income and allowance for loan losses	0	[1],[2]	0	[3],[4]
Other interest-earning assets	105,000,000		900,000,000
Derivative Assets	1,289,000,000		1,893,000,000
Derivative Liabilities	1,350,000,000		1,825,000,000
Deposits	92,325,000,000		95,528,000,000
Short-term borrowings	1,773,000,000		1,574,000,000
Long-term borrowings	0		0
Loan commitments and letters of credit	0		0
Indemnification obligation	0		0
Level 3 [Member]	'		'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'		'
Cash and cash equivalents	0		0
Trading account securities	0		0
Securities held to maturity	0		0
Securities available for sale	12,000,000		15,000,000
Loans held for sale	62,000,000		101,000,000
Loans (excluding leases), net of unearned income and allowance for loan losses	67,029,000,000	[1],[2]	63,961,000,000	[3],[4]
Other interest-earning assets	0		0
Derivative Assets	12,000,000		22,000,000
Derivative Liabilities	0		0
Deposits	0		0
Short-term borrowings	0		0
Long-term borrowings	4,186,000,000		5,101,000,000
Loan commitments and letters of credit	618,000,000		667,000,000
Indemnification obligation	$217,000,000		$329,000,000
[1]	The estimated fair value of portfolio loans assumes sale of the loans to a third-party financial investor. Accordingly, the value to the Company if the loans were held to maturity is not reflected in the fair value estimate. In the current whole loan market, financial investors are generally requiring a higher rate of return than the return inherent in loans if held to maturity. The fair value discount at September 30, 2013 was $5.5 billion or 7.6 percent.
[2]	Excluded from this table is the lease carrying amount of $1.8 billion at September 30, 2013.
[3]	Excluded from this table is the lease carrying amount of $1.5 billion at December 31, 2012.
[4]	The estimated fair value of portfolio loans assumes sale of the loans to a third-party financial investor. Accordingly, the value to the Company if the loans were held to maturity is not reflected in the fair value estimate. In the current whole loan market, financial investors are generally requiring a higher rate of return than the return inherent in loans if held to maturity. The fair value discount at December 31, 2012 was $6.6 billion or 9.4 percent.
[5]	Estimated fair values are consistent with an exit price concept. The assumptions used to estimate the fair values are intended to approximate those that a market participant would use in a hypothetical orderly transaction. In estimating fair value, the Company makes adjustments for interest rates, market liquidity and credit spreads as appropriate.

Business_Segment_Information_S

Business Segment Information (Schedule Of Financial Information By Reportable Segment) (Details) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Segment Reporting Information [Line Items]	'	'	'	'
Provision for loan losses	$18	$33	$59	$176
Non-interest income	495	533	1,493	1,564
Non-interest expense	266	256	773	818
Income tax expense (benefit)	124	136	360	344
Business Services [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Net interest income (loss)	472	495	1,395	1,507
Provision for loan losses	40	144	205	469
Non-interest income	114	116	343	353
Non-interest expense	254	224	723	694
Income (loss) before income taxes	292	243	810	697
Income tax expense (benefit)	111	91	308	264
Net income (loss)	181	152	502	433
Average assets	52,597	48,664	49,108	48,971
Consumer Services [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Net interest income (loss)	460	464	1,384	1,386
Provision for loan losses	68	108	215	365
Non-interest income	269	314	822	906
Non-interest expense	496	505	1,441	1,510
Income (loss) before income taxes	165	165	550	417
Income tax expense (benefit)	63	62	209	158
Net income (loss)	102	103	341	259
Average assets	28,972	29,652	29,008	29,784
Wealth Management [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Net interest income (loss)	44	48	133	144
Provision for loan losses	6	10	18	25
Non-interest income	111	82	289	253
Non-interest expense	114	106	329	319
Income (loss) before income taxes	35	14	75	53
Income tax expense (benefit)	14	6	29	21
Net income (loss)	21	8	46	32
Average assets	3,002	3,253	3,039	3,481
Other [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Net interest income (loss)	-152	-190	-482	-555
Provision for loan losses	-96	-229	-379	-683
Non-interest income	1	21	39	52
Non-interest expense	20	34	117	101
Income (loss) before income taxes	-75	26	-181	79
Income tax expense (benefit)	-64	-23	-186	-99
Net income (loss)	-11	49	5	178
Average assets	32,346	39,962	36,933	40,331
Continuing Operations [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Net interest income (loss)	824	817	2,430	2,482
Provision for loan losses	18	33	59	176
Non-interest income	495	533	1,493	1,564
Non-interest expense	884	869	2,610	2,624
Income (loss) before income taxes	417	448	1,254	1,246
Income tax expense (benefit)	124	136	360	344
Net income (loss)	293	312	894	902
Average assets	116,917	121,531	118,088	122,567
Discontinued Operations [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Net interest income (loss)	0	0	0	7
Provision for loan losses	0	0	0	0
Non-interest income	0	1	0	256
Non-interest expense	1	20	-1	343
Income (loss) before income taxes	-1	-19	1	-80
Income tax expense (benefit)	-1	-8	0	-33
Net income (loss)	0	-11	1	-47
Average assets	0	30	0	948
Consolidated [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Net interest income (loss)	824	817	2,430	2,489
Provision for loan losses	18	33	59	176
Non-interest income	495	534	1,493	1,820
Non-interest expense	885	889	2,609	2,967
Income (loss) before income taxes	416	429	1,255	1,166
Income tax expense (benefit)	123	128	360	311
Net income (loss)	293	301	895	855
Average assets	$116,917	$121,561	$118,088	$123,515

Recovered_Sheet6

Commitments And Contingencies (Credit Risk Of Financial Instruments By Contractual Amounts) (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Disclosure Commitments And Contingencies Credit Risk Of Financial Instruments By Contractual Amounts [Abstract]	'	'
Unused commitments to extend credit	$40,642	$38,160
Standby letters of credit	1,651	1,872
Commercial letters of credit	50	27
Liabilities associated with standby letters of credit	38	37
Assets associated with standby letters of credit	38	37
Reserve for unfunded credit commitments	$74	$83

Commitments_And_Contingencies_1

Commitments And Contingencies (Narrative) (Details) (USD $)

Sep. 30, 2013

Apr. 02, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Sep. 30, 2013

Mar. 31, 2013

Dec. 31, 2012

Carrying Amount [Member]

Carrying Amount [Member]

Estimate of Fair Value [Member]

Estimate of Fair Value [Member]

Minimum [Member]

Indemnification Agreement [Member]

Indemnification Agreement [Member]

Indemnification Agreement [Member]

Visa U.S.A [Member]

Visa U.S.A [Member]

Visa U.S.A [Member]

Long-term Purchase Commitment [Line Items]

'

'

'

'

'

'

'

'

'

'

Estimated term for resolution related to indemnification

'

'

'

'

'

'

'2 years

'

'

'

Indemnification obligation

$244,000,000

'

$244,000,000

$345,000,000

$217,000,000

[1]

$329,000,000

[1]

'

'

'

'

Estimated aggregate amount of losses reasonably possible to be incurred in excess of amounts accrued

90,000,000

'

'

'

'

'

'

'

'

'

Fair value of the indemnification obligation, defense costs

'

385,000,000

'

'

'

'

'

'

'

'

Fair value of the indemnification obligation, unasserted claims

'

256,000,000

'

'

'

'

'

'

'

'

Escrow account reduction

'

'

'

'

'

'

'

0

0

22,000,000

Adjustment to reduce liability

'

'

'

'

'

'

'

'

$0

$22,000,000

[1]

Estimated fair values are consistent with an exit price concept. The assumptions used to estimate the fair values are intended to approximate those that a market participant would use in a hypothetical orderly transaction. In estimating fair value, the Company makes adjustments for interest rates, market liquidity and credit spreads as appropriate.