Regions Financial (RF) 10-Q 8 May 19 2019 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2019	May 06, 2019
Document Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Entity Emerging Growth Company	false
Entity Small Business	false
Document Period End Date	Mar. 31, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q1
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		1,013,224,918

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Assets
Cash and due from banks	$ 1,666	$ 2,018
Interest-bearing deposits in other banks	2,141	1,520
Debt securities held to maturity	1,451	1,482
Debt securities available for sale	23,786	22,729
Loans held for sale	318	304
Loans, net of unearned income	84,430	83,152
Allowance for loan losses	(853)	(840)
Net loans	83,577	82,312
Other earning assets	1,617	1,719
Premises and equipment, net	2,026	2,045
Interest receivable	388	375
Goodwill	4,829	4,829
Residential mortgage servicing rights at fair value	386	418
Other identifiable intangible assets, net	108	115
Other assets	6,509	5,822
Total assets	128,802	125,688
Deposits:
Non-interest-bearing	34,775	35,053
Interest-bearing	60,945	59,438
Total deposits	95,720	94,491
Borrowed funds:
Other short-term borrowings	1,600	1,600
Total short-term borrowings	1,600	1,600
Long-term borrowings	12,957	12,424
Total borrowed funds	14,557	14,024
Other liabilities	3,002	2,083
Total liabilities	113,279	110,598
Equity:
Preferred stock	820	820
Common stock	11	11
Additional paid-in capital	13,584	13,766
Retained earnings	3,066	2,828
Treasury stock, at cost	(1,371)	(1,371)
Accumulated other comprehensive income (loss), net	(598)	(964)
Total stockholders’ equity	15,512	15,090
Noncontrolling interest	11	0
Total equity	15,523	15,090
Total liabilities and equity	$ 128,802	$ 125,688

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Debt Securities held to maturity, estimated fair value	$ 1,454	$ 1,460
Loans held for sale	$ 284	$ 251
Common Stock, Par or Stated Value Per Share (in dollars per share)	$ 0.01	$ 0.01
Common Stock, Shares Authorized	3,000,000,000	3,000,000,000
Common Stock, Shares, Issued	1,053,966,945	1,065,858,925
Treasury Stock, Shares	41,032,675	41,032,676
Preferred Stock, Shares Authorized	10,000,000	10,000,000
Preferred Stock, Par Value Per Share (in dollars per share)	$ 1	$ 1
Noncumulative Preferred Stock [Member]
Preferred Stock, liquidation preference per share (in dollars per share)	$ 1,000	$ 1,000
Preferred Stock, shares issued	1,000,000	1,000,000

CONSOLIDATED STATEMENTS OF INCO

CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Millions, $ in Millions		3 Months Ended
		Mar. 31, 2019	Mar. 31, 2018
Interest income, including other financing income on:
Loans, including fees		$ 981	$ 851
Debt securities - taxable		165	154
Loans held for sale		3	3
Other earning assets		19	19
Operating lease assets		15	20
Total interest income, including other financing income		1,183	1,047
Interest expense on:
Deposits		108	49
Short-term borrowings		13	1
Long-term borrowings		102	72
Total interest expense		223	122
Depreciation expense on operating lease assets		12	16
Total interest expense and depreciation expense on operating lease assets		235	138
Net interest income and other financing income		948	909
Provision (credit) for loan losses		91	(10)
Net interest income and other financing income after provision (credit) for loan losses		857	919
Total non-interest income		502	507
Non-interest expense:
Salaries and employee benefits		478	495
Net occupancy expense		82	83
Furniture and equipment expense		76	81
Other		224	225
Total non-interest expense		860	884
Income from continuing operations before income taxes		499	542
Income tax expense		105	128
Income from continuing operations		394	414
Discontinued operations:
Income (loss) from discontinued operations before income taxes		0	0
Income tax expense (benefit)		0	0
Income (loss) from discontinued operations, net of tax		0	0
Net income		394	414
Net income from continuing operations available to common shareholders		378	398
Net income available to common shareholders		$ 378	$ 398
Weighted-average number of shares outstanding:
Basic (in shares)		1,019	1,127
Diluted (in shares)		1,028	1,141
Earnings per common share from continuing operations:
Basic (in dollars per share)	[1]	$ 0.37	$ 0.35
Diluted (in dollars per share)	[1]	0.37	0.35
Earnings per common share:
Basic (in dollars per share)	[1]	0.37	0.35
Diluted (in dollars per share)	[1]	$ 0.37	$ 0.35
Service charges on deposit accounts
Total non-interest income		$ 175	$ 171
Card and ATM fees
Total non-interest income		109	104
Investment management and trust fee income
Total non-interest income		57	58
Capital markets income
Total non-interest income		42	50
Mortgage income
Total non-interest income		27	38
Securities gains (losses), net
Total non-interest income		(7)	0
Other
Total non-interest income		$ 99	$ 86
[1]	Certain per share amounts may not appear to reconcile due to rounding.

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 394	$ 414
Unrealized losses on securities transferred to held to maturity:
Unrealized losses on securities transferred to held to maturity during the period, net of tax	0	0
Less: Reclassification Adjustments for Amortization of Unrealized Losses on Securities Transferred to Held to Maturity, Net of Tax	(1)	(2)
Net change in unrealized losses on securities transferred to held to maturity, net of tax	1	2
Unrealized gains (losses) on securities available for sale:
Unrealized holding gains (losses) arising during the period on securities available for sale (net of tax)	240	(310)
Less: reclassification adjustments for securities gains (losses) realized in net income (net of tax)	(5)	0
Net change in unrealized gains (losses) on securities available for sale, net of tax	245	(310)
Unrealized gains (losses) on derivative instruments designated as cash flow hedges:
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax	107	(92)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, after Tax	(6)	8
Net change in unrealized gains (losses) on derivative instruments, net of tax	113	(100)
Defined benefit pension plans and other post employment benefits:
Net actuarial gains (losses) arising during the period (net of tax)	0	(1)
Less: reclassification adjustments for amortization of actuarial loss realized in net income (net of tax)	(7)	(7)
Net change from defined benefit pension plans and other post employment benefits, net of tax	7	6
Other comprehensive income (loss), net of tax	366	(402)
Comprehensive income	$ 760	$ 12

CONSOLIDATED STATEMENTS OF CO_2

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Statement of Comprehensive Income [Abstract]
Unrealized losses on securities transferred to held to maturity during the period, tax	$ 0	$ 0
Amortization of unrealized losses on securities transferred to held to maturity, tax	0	(1)
Unrealized holding gains (losses) on available for sale securities, tax	77	(104)
Reclassification adjustments for securities gains (losses) realized in net income, tax	(2)	0
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, Tax	36	(31)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, Tax	(2)	3
Net actuarial gains and losses arising during the period, tax	0	0
Reclassification adjustments for amortization of actuarial loss realized in net income, and other, tax	$ (2)	$ (2)

CONSOLIDATED STATEMENTS OF CHAN

CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) shares in Millions, $ in Millions	Total	Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Treasury Stock, At Cost [Member]	Accumulated Other Comprehensive Income (Loss), Net [Member]	Noncontrolling Interest [Member]
Beginning Balance Outstanding (in shares) at Dec. 31, 2017		1	1,133
Beginning Balance at Dec. 31, 2017	$ 16,192	$ 820	$ 12	$ 15,858	$ 1,628	$ (1,377)	$ (749)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative Effect on Retained Earnings, Net of Tax	(2)				(2)
Net income	414				414
Other comprehensive income (loss), net of tax	(402)						(402)
Cash dividends declared	(101)				(101)
Preferred stock dividends	$ (16)				(16)
Impact of share repurchase, shares	(102.6)		(12)
Impact of share repurchases, value	$ (235)		$ 0	(235)
Impact of stock transaction under compensation plans, net, shares			1
Impact of stock transaction under compensation plans, net	16			16
Ending Balance Outstanding (in shares) at Mar. 31, 2018		1	1,122
Ending Balance at Mar. 31, 2018	15,866	$ 820	$ 12	15,639	1,923	(1,377)	(1,151)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	15,090							$ 0
Beginning Balance Outstanding (in shares) at Dec. 31, 2018		1	1,025
Beginning Balance at Dec. 31, 2018	15,090	$ 820	$ 11	13,766	2,828	(1,371)	(964)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative Effect on Retained Earnings, Net of Tax	2				2
Net income	394				394
Other comprehensive income (loss), net of tax	366						366
Cash dividends declared	(142)				(142)
Preferred stock dividends	(16)				(16)
Impact of share repurchase, shares			(12)
Impact of share repurchases, value	(190)		$ 0	(190)
Impact of stock transaction under compensation plans, net, shares			0
Impact of stock transaction under compensation plans, net	8			8		0
Ending Balance Outstanding (in shares) at Mar. 31, 2019		1	1,013
Ending Balance at Mar. 31, 2019	15,512	$ 820	$ 11	$ 13,584	$ 3,066	$ (1,371)	$ (598)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Other								11
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 15,523							$ 11

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Operating activities:
Net income	$ 394	$ 414
Adjustments to reconcile net income to net cash from operating activities:
Provision (credit) for loan losses	91	(10)
Depreciation, amortization and accretion, net	105	121
Securities (gains) losses, net	7	0
Deferred income tax expense	19	103
Originations and purchases of loans held for sale	(510)	(690)
Proceeds from sales of loans held for sale	515	587
(Gain) loss on sale of loans, net	(25)	(14)
Net change in operating assets and liabilities:
Other earning assets	90	235
Interest receivable and other assets	(381)	(61)
Other liabilities	222	(529)
Other	51	(2)
Net cash from operating activities	578	154
Investing activities:
Proceeds from maturities of debt securities held to maturity	30	46
Proceeds from sales of debt securities available for sale	139	7
Proceeds from maturities of debt securities available for sale	799	798
Purchases of debt securities available for sale	(1,241)	(876)
Net proceeds from (payments for) bank-owned life insurance	(2)	1
Proceeds from sales of loans	185	272
Purchases of loans	(171)	(70)
Purchases of mortgage servicing rights	(8)	(2)
Net change in loans	(1,383)	(164)
Net purchases of other assets	(36)	(56)
Net cash from investing activities	(1,688)	(44)
Financing activities:
Net change in deposits	1,229	101
Net change in short-term borrowings	0	(500)
Proceeds from long-term borrowings	12,025	4,350
Payments on long-term borrowings	(11,525)	(4,500)
Cash dividends on common stock	(143)	(102)
Cash dividends on preferred stock	(16)	(16)
Repurchases of common stock	(190)	(235)
Taxes paid related to net share settlement of equity awards	0	(1)
Other	(1)	(3)
Net cash from financing activities	1,379	(906)
Net change in cash and cash equivalents	269	(796)
Cash and cash equivalents at beginning of year	3,538	3,981
Cash and cash equivalents at end of period	$ 3,807	$ 3,185

Basis of Presentation

Basis of Presentation	3 Months Ended
	Mar. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [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 across the South, Midwest and Texas. The Company competes with other financial institutions located in the states in which it operates, as well as other adjoining states. Regions is subject to the regulations of certain government agencies and undergoes periodic examinations by certain 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 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’ Annual Report on Form 10-K for the year ended December 31, 2018 . Regions has evaluated all subsequent events for potential recognition and disclosure through the filing date of this Form 10-Q. Effective January 1, 2019, the Company adopted new accounting guidance related to several topics. See Note 5 and Note 14 for related disclosures.

Securities

Securities	3 Months Ended
	Mar. 31, 2019
Investments, Debt and Equity Securities [Abstract]
Securities	DEBT SECURITIES The amortized cost, gross unrealized gains and losses, and estimated fair value of debt securities held to maturity and debt securities available for sale are as follows: March 31, 2019 Recognized in OCI (1) Not Recognized in OCI Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Carrying Value Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value (In millions) Debt securities held to maturity: Mortgage-backed securities: Residential agency $ 853 $ — $ (31 ) $ 822 $ 7 $ (3 ) $ 826 Commercial agency 632 — (3 ) 629 4 (5 ) 628 $ 1,485 $ — $ (34 ) $ 1,451 $ 11 $ (8 ) $ 1,454 Debt securities available for sale: U.S. Treasury securities $ 175 $ 1 $ (2 ) $ 174 $ 174 Federal agency securities 45 — — 45 45 Mortgage-backed securities: Residential agency 17,639 59 (257 ) 17,441 17,441 Residential non-agency 2 — — 2 2 Commercial agency 4,188 17 (28 ) 4,177 4,177 Commercial non-agency 731 3 (4 ) 730 730 Corporate and other debt securities 1,211 12 (6 ) 1,217 1,217 $ 23,991 $ 92 $ (297 ) $ 23,786 $ 23,786 December 31, 2018 Recognized in OCI (1) Not Recognized in OCI Amortized Gross Unrealized Gains Gross Unrealized Losses Carrying Value Gross Gross Estimated (In millions) Debt securities held to maturity: Mortgage-backed securities: Residential agency $ 883 $ — $ (32 ) $ 851 $ 1 $ (10 ) $ 842 Commercial agency 634 — (3 ) 631 — (13 ) 618 $ 1,517 $ — $ (35 ) $ 1,482 $ 1 $ (23 ) $ 1,460 Debt securities available for sale: U.S. Treasury securities $ 284 $ — $ (4 ) $ 280 $ 280 Federal agency securities 43 — — 43 43 Mortgage-backed securities: Residential agency 17,064 26 (466 ) 16,624 16,624 Residential non-agency 2 — — 2 2 Commercial agency 3,891 8 (64 ) 3,835 3,835 Commercial non-agency 768 2 (10 ) 760 760 Corporate and other debt securities 1,206 2 (23 ) 1,185 1,185 $ 23,258 $ 38 $ (567 ) $ 22,729 $ 22,729 _________ (1) The gross unrealized losses recognized in OCI on securities held to maturity resulted from a transfer of securities available for sale to held to maturity in the second quarter of 2013. Debt securities with carrying values of $8.3 billion and $7.9 billion at March 31, 2019 and December 31, 2018 , respectively, were pledged to secure public funds, trust deposits and certain borrowing arrangements. Included within total pledged securities is approximately $24 million of encumbered U.S. Treasury securities at both March 31, 2019 and December 31, 2018 . The amortized cost and estimated fair value of debt securities held to maturity and debt securities available for sale at March 31, 2019 , 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 Cost Estimated Fair Value (In millions) Debt securities held to maturity: Mortgage-backed securities: Residential agency $ 853 $ 826 Commercial agency 632 628 $ 1,485 $ 1,454 Debt securities available for sale: Due in one year or less $ 71 $ 71 Due after one year through five years 956 958 Due after five years through ten years 350 352 Due after ten years 54 55 Mortgage-backed securities: Residential agency 17,639 17,441 Residential non-agency 2 2 Commercial agency 4,188 4,177 Commercial non-agency 731 730 $ 23,991 $ 23,786 The following tables present gross unrealized losses and the related estimated fair value of debt securities held to maturity and debt securities available for sale at March 31, 2019 and December 31, 2018 . For debt securities transferred to held to 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 for twelve months or more. March 31, 2019 Less Than Twelve Months Twelve Months or More Total Estimated Fair Value Gross Unrealized Losses Estimated Fair Value Gross Unrealized Losses Estimated Fair Value Gross Unrealized Losses (In millions) Debt securities held to maturity: Mortgage-backed securities: Residential agency $ — $ — $ 826 $ (27 ) $ 826 $ (27 ) Commercial agency — — 160 (8 ) 160 (8 ) $ — $ — $ 986 $ (35 ) $ 986 $ (35 ) Debt securities available for sale: U.S. Treasury securities $ — $ — $ 149 $ (2 ) $ 149 $ (2 ) Mortgage-backed securities: Residential agency 1,366 (10 ) 11,801 (247 ) 13,167 (257 ) Commercial agency — — 2,937 (28 ) 2,937 (28 ) Commercial non-agency — — 444 (4 ) 444 (4 ) Corporate and other debt securities 57 (1 ) 380 (5 ) 437 (6 ) $ 1,423 $ (11 ) $ 15,711 $ (286 ) $ 17,134 $ (297 ) December 31, 2018 Less Than Twelve Months Twelve Months or More Total Estimated Gross Estimated Gross Estimated Gross (In millions) Debt securities held to maturity: Mortgage-backed securities: Residential agency $ — $ — $ 842 $ (42 ) $ 842 $ (42 ) Commercial agency 486 (7 ) 132 (9 ) 618 (16 ) $ 486 $ (7 ) $ 974 $ (51 ) $ 1,460 $ (58 ) Debt securities available for sale: U.S. Treasury securities $ — $ — $ 261 $ (4 ) $ 261 $ (4 ) Mortgage-backed securities: Residential agency 2,830 (37 ) 11,010 (429 ) 13,840 (466 ) Commercial agency 1,073 (13 ) 2,254 (51 ) 3,327 (64 ) Commercial non-agency 229 (1 ) 404 (9 ) 633 (10 ) Corporate and other debt securities 659 (11 ) 310 (12 ) 969 (23 ) $ 4,791 $ (62 ) $ 14,239 $ (505 ) $ 19,030 $ (567 ) The number of individual debt positions in an unrealized loss position in the tables above decrease d from 1,379 at December 31, 2018 to 1,172 at March 31, 2019 . The decrease in the number of securities and the total amount of unrealized losses from year-end 2018 was primarily due to changes in market interest rates. In instances where an unrealized loss existed, there was no indication of an adverse change in credit on the underlying positions in the tables above. As it relates to these positions, management believes no individual unrealized loss, other than those discussed below, represented an OTTI 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 positions before the recovery of their amortized cost basis, which may be at maturity. As part of the Company's normal process for evaluating OTTI, management did identify a limited number of positions where an OTTI was believed to exist as of March 31, 2019 . Gross realized gains and gross realized losses on sales of debt 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 March 31 2019 2018 (In millions) Gross realized gains $ — $ — Gross realized losses (6 ) — OTTI (1 ) — Debt securities available for sale gains (losses), net $ (7 ) $ —

Loans and the Allowance for Cre

Loans and the Allowance for Credit Losses	3 Months Ended
	Mar. 31, 2019
Receivables [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: March 31, 2019 December 31, 2018 (In millions, net of unearned income) Commercial and industrial $ 40,985 $ 39,282 Commercial real estate mortgage—owner-occupied 5,522 5,549 Commercial real estate construction—owner-occupied 434 384 Total commercial 46,941 45,215 Commercial investor real estate mortgage 4,715 4,650 Commercial investor real estate construction 1,871 1,786 Total investor real estate 6,586 6,436 Residential first mortgage 14,113 14,276 Home equity 9,014 9,257 Indirect—vehicles 2,759 3,053 Indirect—other consumer 2,547 2,349 Consumer credit card 1,274 1,345 Other consumer 1,196 1,221 Total consumer 30,903 31,501 $ 84,430 $ 83,152 During the three months ended March 31, 2019 and 2018 , Regions purchased approximately $171 million and $70 million in indirect-other consumer loans from third parties, respectively. During the three months ended March 31, 2019, Regions sold $167 million of affordable housing residential mortgage loans. In January 2019, Regions decided to discontinue its indirect auto lending business due to competition-based margin compression impacting overall returns on the portfolio. Regions ceased originating new indirect auto loans in the first quarter of 2019 and intends to complete any in-process indirect auto loan closings by the end of the second quarter of 2019. The Company will remain in the direct auto lending business. At March 31, 2019 , $21.9 billion in securities and net eligible loans held by Regions were pledged to secure current and potential borrowings from the FHLB. At March 31, 2019 , an additional $25.9 billion in net eligible loans held by Regions were pledged to the FRB for potential borrowings. ALLOWANCE FOR CREDIT LOSSES Regions determines the appropriate level of the allowance on a quarterly basis. Refer to Note 1 “Summary of Significant Accounting Policies” to the consolidated financial statements to the Annual Report on Form 10-K for the year ended December 31, 2018 , for a description of the methodology. ROLLFORWARD OF ALLOWANCE FOR CREDIT LOSSES The following tables present analyses of the allowance for credit losses by portfolio segment for the three months ended March 31, 2019 and 2018. The total allowance for loan losses and the related loan portfolio ending balances are disaggregated to detail the amounts derived through individual evaluation and collective evaluation for impairment. The allowance for loan losses related to individually evaluated loans is attributable to reserves for non-accrual commercial and investor real estate loans and all TDRs. The allowance for loan losses and the loan portfolio ending balances related to collectively evaluated loans is attributable to the remainder of the portfolio. Three Months Ended March 31, 2019 Commercial Investor Real Estate Consumer Total (In millions) Allowance for loan losses, January 1, 2019 $ 520 $ 58 $ 262 $ 840 Provision (credit) for loan losses 38 (5 ) 58 91 Loan losses: Charge-offs (30 ) — (72 ) (102 ) Recoveries 9 1 14 24 Net loan (losses) recoveries (21 ) 1 (58 ) (78 ) Allowance for loan losses, March 31, 2019 537 54 262 853 Reserve for unfunded credit commitments, January 1, 2019 47 4 — 51 Provision (credit) for unfunded credit losses (1 ) — — (1 ) Reserve for unfunded credit commitments, March 31, 2019 46 4 — 50 Allowance for credit losses, March 31, 2019 $ 583 $ 58 $ 262 $ 903 Portion of ending allowance for loan losses: Individually evaluated for impairment $ 119 $ 3 $ 29 $ 151 Collectively evaluated for impairment 418 51 233 702 Total allowance for loan losses $ 537 $ 54 $ 262 $ 853 Portion of loan portfolio ending balance: Individually evaluated for impairment $ 523 $ 22 $ 411 $ 956 Collectively evaluated for impairment 46,418 6,564 30,492 83,474 Total loans evaluated for impairment $ 46,941 $ 6,586 $ 30,903 $ 84,430 Three Months Ended March 31, 2018 Commercial Investor Real Estate Consumer Total (In millions) Allowance for loan losses, January 1, 2018 $ 591 $ 64 $ 279 $ 934 Provision (credit) for loan losses (24 ) (4 ) 18 (10 ) Loan losses: Charge-offs (30 ) (8 ) (74 ) (112 ) Recoveries 10 2 16 28 Net loan (losses) recoveries (20 ) (6 ) (58 ) (84 ) Allowance for loan losses, March 31, 2018 547 54 239 840 Reserve for unfunded credit commitments, January 1, 2018 49 4 — 53 Provision (credit) for unfunded credit losses (4 ) — — (4 ) Reserve for unfunded credit commitments, March 31, 2018 45 4 — 49 Allowance for credit losses, March 31, 2018 $ 592 $ 58 $ 239 $ 889 Portion of ending allowance for loan losses: Individually evaluated for impairment $ 150 $ 10 $ 29 $ 189 Collectively evaluated for impairment 397 44 210 651 Total allowance for loan losses $ 547 $ 54 $ 239 $ 840 Portion of loan portfolio ending balance: Individually evaluated for impairment $ 700 $ 96 $ 476 $ 1,272 Collectively evaluated for impairment 42,437 5,491 30,622 78,550 Total loans evaluated for impairment $ 43,137 $ 5,587 $ 31,098 $ 79,822 PORTFOLIO SEGMENT RISK FACTORS The following describe the risk characteristics relevant to each of the portfolio segments. Commercial —The commercial 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 mortgage 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, and the sensitivity to market fluctuations in commodity prices. 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 consists 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 the valuation of real estate. Consumer —The consumer portfolio segment includes residential first mortgage, home equity, indirect-vehicles, indirect-other consumer, 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-vehicles lending, which is lending initiated through third-party business partners, largely consists of loans made through automotive dealerships. Indirect-other consumer lending represents other point of sale lending through third parties. Consumer credit card lending includes Regions branded consumer credit card accounts. Other consumer loans include other revolving consumer accounts, direct consumer 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 portfolio segments and classes, excluding loans held for sale, as of March 31, 2019 , and December 31, 2018 . Commercial and investor real estate 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 that 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 that may, in the future, have an adverse effect on debt service ability; • Substandard Accrual—includes obligations that exhibit a well-defined weakness that 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. March 31, 2019 Pass Special Mention Substandard Accrual Non-accrual Total (In millions) Commercial and industrial $ 39,534 $ 668 $ 447 $ 336 $ 40,985 Commercial real estate mortgage—owner-occupied 5,159 197 99 67 5,522 Commercial real estate construction—owner-occupied 403 12 5 14 434 Total commercial $ 45,096 $ 877 $ 551 $ 417 $ 46,941 Commercial investor real estate mortgage $ 4,464 $ 168 $ 75 $ 8 $ 4,715 Commercial investor real estate construction 1,848 18 5 — 1,871 Total investor real estate $ 6,312 $ 186 $ 80 $ 8 $ 6,586 Accrual Non-accrual Total (In millions) Residential first mortgage $ 14,079 $ 34 $ 14,113 Home equity 8,950 64 9,014 Indirect—vehicles 2,759 — 2,759 Indirect—other consumer 2,547 — 2,547 Consumer credit card 1,274 — 1,274 Other consumer 1,196 — 1,196 Total consumer $ 30,805 $ 98 $ 30,903 $ 84,430 December 31, 2018 Pass Special Mention Substandard Accrual Non-accrual Total (In millions) Commercial and industrial $ 37,963 $ 666 $ 346 $ 307 $ 39,282 Commercial real estate mortgage—owner-occupied 5,193 208 81 67 5,549 Commercial real estate construction—owner-occupied 356 7 13 8 384 Total commercial $ 43,512 $ 881 $ 440 $ 382 $ 45,215 Commercial investor real estate mortgage $ 4,444 $ 52 $ 143 $ 11 $ 4,650 Commercial investor real estate construction 1,773 6 7 — 1,786 Total investor real estate $ 6,217 $ 58 $ 150 $ 11 $ 6,436 Accrual Non-accrual Total (In millions) Residential first mortgage $ 14,236 $ 40 $ 14,276 Home equity 9,194 63 9,257 Indirect—vehicles 3,053 — 3,053 Indirect—other consumer 2,349 — 2,349 Consumer credit card 1,345 — 1,345 Other consumer 1,221 — 1,221 Total consumer $ 31,398 $ 103 $ 31,501 $ 83,152 AGING ANALYSIS The following tables include an aging analysis of DPD for each portfolio segment and class as of March 31, 2019 and December 31, 2018 : March 31, 2019 Accrual Loans 30-59 DPD 60-89 DPD 90+ DPD Total 30+ DPD Total Accrual Non-accrual Total (In millions) Commercial and industrial $ 24 $ 11 $ 11 $ 46 $ 40,649 $ 336 $ 40,985 Commercial real estate mortgage—owner-occupied 10 2 1 13 5,455 67 5,522 Commercial real estate construction—owner-occupied — — — — 420 14 434 Total commercial 34 13 12 59 46,524 417 46,941 Commercial investor real estate mortgage 1 — — 1 4,707 8 4,715 Commercial investor real estate construction — 1 — 1 1,871 — 1,871 Total investor real estate 1 1 — 2 6,578 8 6,586 Residential first mortgage 77 43 142 262 14,079 34 14,113 Home equity 44 24 37 105 8,950 64 9,014 Indirect—vehicles 34 9 7 50 2,759 — 2,759 Indirect—other consumer 13 7 1 21 2,547 — 2,547 Consumer credit card 11 8 20 39 1,274 — 1,274 Other consumer 15 5 4 24 1,196 — 1,196 Total consumer 194 96 211 501 30,805 98 30,903 $ 229 $ 110 $ 223 $ 562 $ 83,907 $ 523 $ 84,430 December 31, 2018 Accrual Loans 30-59 DPD 60-89 DPD 90+ DPD Total 30+ DPD Total Accrual Non-accrual Total (In millions) Commercial and industrial $ 80 $ 22 $ 8 $ 110 $ 38,975 $ 307 $ 39,282 Commercial real estate mortgage—owner-occupied 12 7 — 19 5,482 67 5,549 Commercial real estate construction—owner-occupied — — — — 376 8 384 Total commercial 92 29 8 129 44,833 382 45,215 Commercial investor real estate mortgage 6 — — 6 4,639 11 4,650 Commercial investor real estate construction — — — — 1,786 — 1,786 Total investor real estate 6 — — 6 6,425 11 6,436 Residential first mortgage 85 53 150 288 14,236 40 14,276 Home equity 47 26 34 107 9,194 63 9,257 Indirect—vehicles 40 11 9 60 3,053 — 3,053 Indirect—other consumer 13 7 1 21 2,349 — 2,349 Consumer credit card 12 9 20 41 1,345 — 1,345 Other consumer 15 5 5 25 1,221 — 1,221 Total consumer 212 111 219 542 31,398 103 31,501 $ 310 $ 140 $ 227 $ 677 $ 82,656 $ 496 $ 83,152 IMPAIRED LOANS The following tables present details related to the Company’s impaired loans as of March 31, 2019 and December 31, 2018 . Loans deemed to be impaired include all TDRs and all non-accrual commercial and investor real estate loans, excluding leases. Loans that have been fully charged-off do not appear in the tables below. Non-accrual Impaired Loans As of March 31, 2019 Book Value (3) Unpaid Principal Balance (1) Charge-offs and Payments Applied (2) Total Impaired Loans on Non-accrual Status Impaired Loans on Non-accrual Status with No Related Allowance Impaired Loans on Non-accrual Status with Related Allowance Related Allowance for Loan Losses Coverage % (4) (Dollars in millions) Commercial and industrial $ 426 $ 90 $ 336 $ 111 $ 225 $ 77 39.2 % Commercial real estate mortgage—owner-occupied 75 8 67 8 59 25 44.0 Commercial real estate construction—owner-occupied 16 2 14 1 13 3 31.3 Total commercial 517 100 417 120 297 105 39.7 Commercial investor real estate mortgage 8 — 8 — 8 2 25.0 Total investor real estate 8 — 8 — 8 2 25.0 Residential first mortgage 27 7 20 — 20 2 33.3 Home equity 11 1 10 — 10 — 9.1 Total consumer 38 8 30 — 30 2 26.3 $ 563 $ 108 $ 455 $ 120 $ 335 $ 109 38.5 % Accruing Impaired Loans As of March 31, 2019 Unpaid Principal Balance (1) Charge-offs and Payments Applied (2) Book Value (3) Related Allowance for Loan Losses Coverage % (4) (Dollars in millions) Commercial and industrial $ 84 $ — $ 84 $ 12 14.3 % Commercial real estate mortgage—owner-occupied 24 2 22 2 16.7 Total commercial 108 2 106 14 14.8 Commercial investor real estate mortgage 14 1 13 1 14.3 Commercial investor real estate construction 1 — 1 — — Total investor real estate 15 1 14 1 13.3 Residential first mortgage 199 9 190 20 14.6 Home equity 186 1 185 7 4.3 Consumer credit card 1 — 1 — — Other consumer 5 — 5 — — Total consumer 391 10 381 27 9.5 $ 514 $ 13 $ 501 $ 42 10.7 % Total Impaired Loans As of March 31, 2019 Book Value (3) Unpaid Principal Balance (1) Charge-offs and Payments Applied (2) Total Impaired Loans Impaired Loans with No Related Allowance Impaired Loans with Related Allowance Related Allowance for Loan Losses Coverage % (4) (Dollars in millions) Commercial and industrial $ 510 $ 90 $ 420 $ 111 $ 309 $ 89 35.1 % Commercial real estate mortgage—owner-occupied 99 10 89 8 81 27 37.4 Commercial real estate construction—owner-occupied 16 2 14 1 13 3 31.3 Total commercial 625 102 523 120 403 119 35.4 Commercial investor real estate mortgage 22 1 21 — 21 3 18.2 Commercial investor real estate construction 1 — 1 — 1 — — Total investor real estate 23 1 22 — 22 3 17.4 Residential first mortgage 226 16 210 — 210 22 16.8 Home equity 197 2 195 — 195 7 4.6 Consumer credit card 1 — 1 — 1 — — Other consumer 5 — 5 — 5 — — Total consumer 429 18 411 — 411 29 11.0 $ 1,077 $ 121 $ 956 $ 120 $ 836 $ 151 25.3 % Non-accrual Impaired Loans As of December 31, 2018 Book Value (3) Unpaid Principal Balance (1) Charge-offs and Payments Applied (2) Total Impaired Loans on Non-accrual Status Impaired Loans on Non-accrual Status with No Related Allowance Impaired Loans on Non-accrual Status with Related Allowance Related Allowance for Loan Losses Coverage % (4) (Dollars in millions) Commercial and industrial $ 384 $ 77 $ 307 $ 113 $ 194 $ 62 36.2 % Commercial real estate mortgage—owner-occupied 76 9 67 13 54 23 42.1 Commercial real estate construction—owner-occupied 9 1 8 — 8 3 44.4 Total commercial 469 87 382 126 256 88 37.3 Commercial investor real estate mortgage 11 — 11 4 7 1 9.1 Total investor real estate 11 — 11 4 7 1 9.1 Residential first mortgage 31 8 23 — 23 2 32.3 Home equity 11 2 9 — 9 — 18.2 Total consumer 42 10 32 — 32 2 28.6 $ 522 $ 97 $ 425 $ 130 $ 295 $ 91 36.0 % Accruing Impaired Loans As of December 31, 2018 Unpaid Principal Balance (1) Charge-offs and Payments Applied (2) Book Value (3) Related Allowance for Loan Losses Coverage % (4) (Dollars in millions) Commercial and industrial $ 84 $ — $ 84 $ 14 16.7 % Commercial real estate mortgage—owner-occupied 26 2 24 2 15.4 Total commercial 110 2 108 16 16.4 Commercial investor real estate mortgage 15 1 14 1 13.3 Total investor real estate 15 1 14 1 13.3 Residential first mortgage 194 9 185 18 13.9 Home equity 195 — 195 6 3.1 Consumer credit card 1 — 1 — — Other consumer 6 — 6 — — Total consumer 396 9 387 24 8.3 $ 521 $ 12 $ 509 $ 41 10.2 % Total Impaired Loans As of December 31, 2018 Book Value (3) Unpaid Principal Balance (1) Charge-offs and Payments Applied (2) Total Impaired Loans Impaired Loans with No Related Allowance Impaired Loans with Related Allowance Related Allowance for Loan Losses Coverage % (4) (Dollars in millions) Commercial and industrial $ 468 $ 77 $ 391 $ 113 $ 278 $ 76 32.7 % Commercial real estate mortgage—owner-occupied 102 11 91 13 78 25 35.3 Commercial real estate construction—owner-occupied 9 1 8 — 8 3 44.4 Total commercial 579 89 490 126 364 104 33.3 Commercial investor real estate mortgage 26 1 25 4 21 2 11.5 Total investor real estate 26 1 25 4 21 2 11.5 Residential first mortgage 225 17 208 — 208 20 16.4 Home equity 206 2 204 — 204 6 3.9 Consumer credit card 1 — 1 — 1 — — Other consumer 6 — 6 — 6 — — Total consumer 438 19 419 — 419 26 10.3 $ 1,043 $ 109 $ 934 $ 130 $ 804 $ 132 23.1 % ________ (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 months ended March 31, 2019 and 2018 . Interest income recognized represents interest on accruing loans modified in a TDR. Three Months Ended March 31 2019 2018 Average Balance Interest Income Recognized Average Balance Interest Income Recognized (In millions) Commercial and industrial $ 411 $ 1 $ 533 $ 3 Commercial real estate mortgage—owner-occupied 93 1 166 3 Commercial real estate construction—owner-occupied 13 — 6 — Total commercial 517 2 705 6 Commercial investor real estate mortgage 21 — 76 1 Commercial investor real estate construction — — 30 — Total investor real estate 21 — 106 1 Residential first mortgage 209 1 288 2 Home equity 198 3 252 3 Consumer credit card 1 — 1 — Other consumer 6 — 8 — Total consumer 414 4 549 5 Total impaired loans $ 952 $ 6 $ 1,360 $ 12 TROUBLED DEBT RESTRUCTURINGS Regions regularly modifies commercial and investor real estate loans in order to facilitate a workout strategy. Similarly, Regions works to meet the individual needs of consumer borrowers to stem foreclosure through its CAP. Refer to Note 6 "Allowance For Credit Losses" in the 2018 Annual Report on Form 10-K for additional information regarding the Company's TDRs. 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 Note 1 "Summary of Significant Accounting Policies" in the 2018 Annual Report on Form 10-K. The following tables present the end of period balance for loans modified in a TDR during the periods presented by portfolio segment and class, and the financial impact of those modifications. The tables include modifications made to new TDRs, as well as renewals of existing TDRs. Loans first reported as TDRs during the three months ended March 31, 2019 and 2018 totaled approximately $85 million and $171 million , respectively. Three Months Ended March 31, 2019 Financial Impact Number of Recorded Increase in (Dollars in millions) Commercial and industrial 26 $ 78 $ 1 Commercial real estate mortgage—owner-occupied 17 12 — Commercial real estate construction—owner-occupied 1 2 — Total commercial 44 92 1 Commercial investor real estate mortgage 3 11 — Commercial investor real estate construction 2 — — Total investor real estate 5 11 — Residential first mortgage 34 10 1 Home equity 34 3 — Consumer credit card 18 — — Indirect—vehicles and other consumer 30 — — Total consumer 116 13 1 165 $ 116 $ 2 Three Months Ended March 31, 2018 Financial Impact Number of Recorded Increase in (Dollars in millions) Commercial and industrial 29 $ 164 $ 2 Commercial real estate mortgage—owner-occupied 18 14 — Total commercial 47 178 2 Commercial investor real estate mortgage 10 19 1 Total investor real estate 10 19 1 Residential first mortgage 53 8 1 Home equity 17 1 — Consumer credit card 14 — — Indirect—vehicles and other consumer 13 — — Total consumer 97 9 1 154 $ 206 $ 4 TDRs that defaulted during the three months ended March 31, 2019 and 2018, and that were modified in the previous twelve months (i.e., the twelve months prior to default) were immaterial. At March 31, 2019, approximately $18 million of commercial and investor real estate loans modified as TDRs during the three months ended March 31, 2019 were on non-accrual status. At March 31, 2019 , Regions had restructured binding unfunded commitments totaling $7 million where a concession was granted and the borrower was in financial difficulty.

Servicing of Financial Assets

Servicing of Financial Assets	3 Months Ended
	Mar. 31, 2019
Transfers and Servicing of Financial Assets [Abstract]
Servicing of Financial Assets	SERVICING OF FINANCIAL ASSETS RESIDENTIAL MORTGAGE BANKING ACTIVITIES The fair value of residential MSRs 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 residential MSRs. 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 residential MSRs under the fair value measurement method: Three Months Ended March 31 2019 2018 (In millions) Carrying value, beginning of period $ 418 $ 336 Additions 7 8 Increase (decrease) in fair value: Due to change in valuation inputs or assumptions (28 ) 22 Economic amortization associated with borrower repayments (1) (11 ) (10 ) Carrying value, end of period $ 386 $ 356 ________ (1) "Economic amortization associated with borrower repayments" includes both total loan payoffs as well as partial paydowns. On March 27, 2019, the Company sold $167 million of affordable housing residential mortgage loans and as part of the transaction kept the rights to service the loans, which resulted in a retained residential MSR of approximately $2 million . Data and assumptions used in the fair value calculation, as well as the valuation’s sensitivity to rate fluctuations, related to residential MSRs (excluding related derivative instruments) are as follows: March 31 2019 2018 (Dollars in millions) Unpaid principal balance $ 36,050 $ 31,641 Weighted-average CPR (%) 10.4 % 9.0 % Estimated impact on fair value of a 10% increase $ (21 ) $ (24 ) Estimated impact on fair value of a 20% increase $ (38 ) $ (43 ) Option-adjusted spread (basis points) 759 842 Estimated impact on fair value of a 10% increase $ (12 ) $ (12 ) Estimated impact on fair value of a 20% increase $ (23 ) $ (24 ) Weighted-average coupon interest rate 4.2 % 4.1 % Weighted-average remaining maturity (months) 279 280 Weighted-average servicing fee (basis points) 27.1 27.3 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 residential MSRs 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 include contractually specified servicing fees, late fees and other ancillary income resulting from the servicing of residential mortgage loans: Three Months Ended March 31 2019 2018 (In millions) Servicing related fees and other ancillary income $ 26 $ 23 Residential mortgage 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 an immaterial repurchase liability related to residential 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. COMMERCIAL MORTGAGE BANKING ACTIVITIES Regions is an approved DUS lender. The DUS program provides liquidity to the multi-family housing market. In connection with the DUS program, Regions services commercial mortgage loans, retains commercial MSRs and intangible assets associated with the DUS license, and assumes a loss share guarantee associated with the loans. See Note 1 "Summary of Significant Accounting Policies" in the 2018 Annual Report on Form 10-K for additional information. Also see Note 12 for additional information related to the guarantee. As of March 31, 2019 and December 31, 2018 , the DUS servicing portfolio was approximately $3.6 billion . The related commercial MSRs were approximately $55 million and $56 million at March 31, 2019 and December 31, 2018 , respectively. The estimated fair value of the loss share guarantee was approximately $4 million at both March 31, 2019 and December 31, 2018 .

Leases

Leases	3 Months Ended
	Mar. 31, 2019
Leases [Abstract]
Leases Lessee	LEASES LESSEE Regions' lease portfolio is primarily composed of property leases that are classified as either operating or finance leases with the majority classified as operating leases. Property leases, which primarily include office locations and retail branches, typically have original lease terms ranging from 1 year to 20 years , some of which may also include an option to extend the lease beyond the original lease term. In some circumstances, Regions may also have an option to terminate the lease early with advance notice. Regions includes renewal and termination options within the lease term if deemed reasonably certain of exercise. As most leases do not state an implicit rate, Regions utilizes the incremental borrowing rate based on information available at the lease commencement date to determine the present value of lease payments. Leases with a term of 12 months or less are not recorded on the balance sheet, and Regions continues to recognize lease payments as an expense over the lease term as appropriate. The remainder of the lease portfolio is comprised of equipment leases that have remaining lease terms of 1 year to 3 years. As of March 31, 2019 , assets and liabilities recorded under operating leases for properties is $430 million and $511 million , respectively. The difference between the asset and liability balance is largely the result of lease liabilities that existed prior to the January 1, 2019 adoption of the new accounting guidance for leases. The asset is recorded within other assets and the lease liability is recorded within other liabilities on the consolidated balance sheet. Lease expense is comprised of the following: Three Months Ended March 31, 2019 (In millions) Operating lease cost $ 21 Other information related to operating leases is as follows: Three Months Ended March 31, 2019 Weighted-average remaining lease term (years) 9.2 Weighted-average discount rate (%) 3.3 % Future, undiscounted minimum lease payments on operating leases are as follows: March 31, 2019 (In millions) 2019 $ 70 2020 90 2021 80 2022 71 2023 63 Thereafter 248 Total lease payments $ 622 Less: Computed interest 111 Total present value of lease liabilities $ 511
Leases Lessor	LESSOR Regions engages in both direct financing and sales-type leasing. Regions also has portfolios of leveraged and operating leases. These arrangements provide equipment financing for leased assets, such as vehicles and aircraft. At the commencement date, Regions (lessor) enters into an agreement with the customer (lessee) to lease the underlying equipment for a specified lease term. The lease agreements may provide customers the option to terminate the lease by buying the equipment at fair market value at the time of termination or at the end of the lease term. Regions' equipment finance asset management group performs due diligence procedures on the lease residual and overall equipment values as part of the origination process. Regions performs lease residual value reviews on an ongoing basis.. In order to manage the residual value risk inherent in some of its direct financing leases, Regions purchases residual value insurance from an independent third party. The sales-type, direct financing and leveraged leases are recorded within loans on the consolidated balance sheet and operating leases are recorded within other earning assets on the consolidated balance sheet. The following table presents a summary of Regions' sales-type, direct financing, operating, and leveraged leases: As of and For the Three Months Ended March 31, 2019 Sales-Type and Direct Financing Operating Leveraged Total (In millions) Net interest income and other financing income $ 8 $ 3 $ 3 $ 14 Lease receivable 1,046 152 185 1,383 Unearned income (245 ) (39 ) (125 ) (409 ) Guaranteed residual 42 — — 42 Unguaranteed residual 136 236 159 531 Total net investment $ 979 $ 349 $ 219 $ 1,547 The following table presents the minimum future payments due from customers for sales-type, direct financing, and operating leases: March 31, 2019 Sales-Type and Direct Financing Operating Total (In millions) 2019 $ 142 $ 40 $ 182 2020 149 43 192 2021 115 30 145 2022 94 17 111 2023 76 8 84 Thereafter 470 14 484 $ 1,046 $ 152 $ 1,198
Leases Lessor	LESSOR Regions engages in both direct financing and sales-type leasing. Regions also has portfolios of leveraged and operating leases. These arrangements provide equipment financing for leased assets, such as vehicles and aircraft. At the commencement date, Regions (lessor) enters into an agreement with the customer (lessee) to lease the underlying equipment for a specified lease term. The lease agreements may provide customers the option to terminate the lease by buying the equipment at fair market value at the time of termination or at the end of the lease term. Regions' equipment finance asset management group performs due diligence procedures on the lease residual and overall equipment values as part of the origination process. Regions performs lease residual value reviews on an ongoing basis.. In order to manage the residual value risk inherent in some of its direct financing leases, Regions purchases residual value insurance from an independent third party. The sales-type, direct financing and leveraged leases are recorded within loans on the consolidated balance sheet and operating leases are recorded within other earning assets on the consolidated balance sheet. The following table presents a summary of Regions' sales-type, direct financing, operating, and leveraged leases: As of and For the Three Months Ended March 31, 2019 Sales-Type and Direct Financing Operating Leveraged Total (In millions) Net interest income and other financing income $ 8 $ 3 $ 3 $ 14 Lease receivable 1,046 152 185 1,383 Unearned income (245 ) (39 ) (125 ) (409 ) Guaranteed residual 42 — — 42 Unguaranteed residual 136 236 159 531 Total net investment $ 979 $ 349 $ 219 $ 1,547 The following table presents the minimum future payments due from customers for sales-type, direct financing, and operating leases: March 31, 2019 Sales-Type and Direct Financing Operating Total (In millions) 2019 $ 142 $ 40 $ 182 2020 149 43 192 2021 115 30 145 2022 94 17 111 2023 76 8 84 Thereafter 470 14 484 $ 1,046 $ 152 $ 1,198
Leases Lessor	LESSOR Regions engages in both direct financing and sales-type leasing. Regions also has portfolios of leveraged and operating leases. These arrangements provide equipment financing for leased assets, such as vehicles and aircraft. At the commencement date, Regions (lessor) enters into an agreement with the customer (lessee) to lease the underlying equipment for a specified lease term. The lease agreements may provide customers the option to terminate the lease by buying the equipment at fair market value at the time of termination or at the end of the lease term. Regions' equipment finance asset management group performs due diligence procedures on the lease residual and overall equipment values as part of the origination process. Regions performs lease residual value reviews on an ongoing basis.. In order to manage the residual value risk inherent in some of its direct financing leases, Regions purchases residual value insurance from an independent third party. The sales-type, direct financing and leveraged leases are recorded within loans on the consolidated balance sheet and operating leases are recorded within other earning assets on the consolidated balance sheet. The following table presents a summary of Regions' sales-type, direct financing, operating, and leveraged leases: As of and For the Three Months Ended March 31, 2019 Sales-Type and Direct Financing Operating Leveraged Total (In millions) Net interest income and other financing income $ 8 $ 3 $ 3 $ 14 Lease receivable 1,046 152 185 1,383 Unearned income (245 ) (39 ) (125 ) (409 ) Guaranteed residual 42 — — 42 Unguaranteed residual 136 236 159 531 Total net investment $ 979 $ 349 $ 219 $ 1,547 The following table presents the minimum future payments due from customers for sales-type, direct financing, and operating leases: March 31, 2019 Sales-Type and Direct Financing Operating Total (In millions) 2019 $ 142 $ 40 $ 182 2020 149 43 192 2021 115 30 145 2022 94 17 111 2023 76 8 84 Thereafter 470 14 484 $ 1,046 $ 152 $ 1,198

Stockholders' Equity and Accumu

Stockholders' Equity and Accumulated Other Comprehensive Income (Loss)	3 Months Ended
	Mar. 31, 2019
Equity [Abstract]
Stockholders' Equity and Accumulated Other Comprehensive Income (Loss)	STOCKHOLDERS’ EQUITY AND ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) PREFERRED STOCK The following table presents a summary of the non-cumulative perpetual preferred stock: March 31, 2019 December 31, 2018 Issuance Date Earliest Redemption Date Dividend Rate Liquidation Amount Carrying Amount Carrying Amount (Dollars in millions) Series A 11/1/2012 12/15/2017 6.375 % $ 500 $ 387 $ 387 Series B 4/29/2014 9/15/2024 6.375 % (1) 500 433 433 $ 1,000 $ 820 $ 820 _________ (1) Dividends, if declared, will be paid quarterly at an annual rate equal to (i) for each period beginning prior to September 15, 2024, 6.375% , and (ii) for each period beginning on or after September 15, 2024, three-month LIBOR plus 3.536% . For each preferred stock issuance listed above, Regions issued depositary shares, each representing a 1/40th ownership interest in a share of the Company's preferred stock, with a liquidation preference of $1,000.00 per share of preferred stock (equivalent to $25.00 per depositary share). Dividends on the preferred stock, if declared, accrue and are payable quarterly in arrears. The preferred stock has no stated maturity and redemption is solely at Regions' option, subject to regulatory approval, in whole, or in part, after the earliest redemption date or in whole, but not in part, within 90 days following a regulatory capital treatment event for the Series A preferred stock or at any time following a regulatory capital treatment event for the Series B preferred stock. The Board of Directors declared $8 million in cash dividends on both Series A and Series B Preferred Stock during the first three months of 2019 and 2018. In the event Series A and Series B preferred shares are redeemed at the liquidation amounts, $113 million and $67 million excess of the redemption amount over the carrying amount will be recognized, respectively. Approximately $100 million of Series A preferred dividends that were recorded as a reduction of preferred stock, including related surplus, will be recorded as a reduction to retained earnings, and approximately $13 million of related issuance costs that were recorded as a reduction of preferred stock, including related surplus, will be recorded as a reduction to net income available to common shareholders. Approximately $52 million of Series B preferred dividends that were recorded as a reduction of preferred stock, including related surplus, will be recorded as a reduction to retained earnings, and approximately $15 million of related issuance costs that were recorded as a reduction of preferred stock, including related surplus, will be recorded as a reduction to net income available to common shareholders. On April 30, 2019, Regions completed the issuance of $500 million in depositary shares each representing a 1/40th ownership interest in a share of the Company's 5.7% Fixed-to-Floating Rate Non-Cumulative Perpetual Preferred Stock, Series C, par value $1.00 per share ("Series C Preferred Stock"), with a liquidation preference of $1,000.00 per share of Series C Preferred Stock (equivalent to $25.00 per depositary share). Dividends will be paid quarterly at an annual rate equal to (i) for each period beginning prior to August 15, 2029, 5.7% , and (ii) for each period beginning on or after August 15, 2029, three-month LIBOR plus 3.148% . COMMON STOCK On June 28, 2018, Regions received no objection from the Federal Reserve to its 2018 capital plan that was submitted as part of the CCAR process, which included the repurchase of common shares and a common stock dividend increase. As part of the Company's capital plan, the Board authorized a $2.031 billion common stock repurchase plan, permitting repurchases from the beginning of the third quarter of 2018 through the second quarter of 2019. This plan is inclusive of the capital generated from the sale of Regions Insurance Group, Inc. and related affiliates during the third quarter of 2018 (see Note 3 "Discontinued Operations" of the Annual Report on Form 10-K for the year ended December 31, 2018 for more information). The capital plan included a proposed increase of the quarterly common stock dividend to $0.14 per common share that began in the third quarter of 2018. Regions declared a $0.14 per share cash dividend on the common stock for the first quarter of 2019 as compared to $0.09 per common share for the first quarter of 2018. As of March 31, 2019, Regions has repurchased 102.6 million shares of common stock under the 2018 capital plan at a total cost of approximately $1.8 billion. The Company also continued open market share repurchases under its capital plan in the second quarter of 2019. As of May 7, 2019, Regions had repurchased approximately 4.8 million shares of common stock at a total cost of approximately $74.5 million . All of these shares were immediately retired upon repurchase and, therefore, will not be included in treasury stock. ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) Activity within the balances in accumulated other comprehensive income (loss), net is shown in the following tables: Three Months Ended March 31, 2019 Unrealized losses on securities transferred to held to maturity Unrealized gains (losses) on securities available for sale Unrealized gains (losses) on derivative instruments designated as cash flow hedges Defined benefit pension plans and other post employment benefits Accumulated other comprehensive (In millions) Beginning of period $ (27 ) $ (397 ) $ (63 ) $ (477 ) $ (964 ) Net change 1 245 113 7 366 End of period $ (26 ) $ (152 ) $ 50 $ (470 ) $ (598 ) Three Months Ended March 31, 2018 Unrealized losses on securities transferred to held to maturity Unrealized gains (losses) on securities available for sale Unrealized gains (losses) on derivative instruments designated as cash flow hedges Defined benefit pension plans and other post employment benefits Accumulated other comprehensive (In millions) Beginning of period $ (33 ) $ (153 ) $ (51 ) $ (512 ) $ (749 ) Net change 2 (310 ) (100 ) 6 (402 ) End of period $ (31 ) $ (463 ) $ (151 ) $ (506 ) $ (1,151 ) The following table presents amounts reclassified out of accumulated other comprehensive income (loss) for the three months ended March 31, 2018 and 2019 : Three Months Ended March 31, 2019 Three Months Ended March 31, 2018 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: $ (1 ) $ (3 ) Net interest income and other financing income — 1 Tax (expense) or benefit $ (1 ) $ (2 ) Net of tax Unrealized gains and (losses) on available for sale securities: $ (7 ) $ — Securities gains (losses), net 2 — Tax (expense) or benefit $ (5 ) $ — Net of tax Gains and (losses) on cash flow hedges: Interest rate contracts $ (8 ) $ 11 Net interest income and other financing income 2 (3 ) Tax (expense) or benefit $ (6 ) $ 8 Net of tax Amortization of defined benefit pension plans and other post employment benefits: Actuarial gains (losses) (2) $ (9 ) $ (9 ) Total before tax 2 2 Tax (expense) or benefit $ (7 ) $ (7 ) Net of tax Total reclassifications for the period $ (19 ) $ (1 ) 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 other non-interest expense on the consolidated statements of income (See Note 8 for additional details).

Earnings (Loss) Per Common Shar

Earnings (Loss) Per Common Share	3 Months Ended
	Mar. 31, 2019
Earnings Per Share [Abstract]
Earnings (Loss) Per Common Share	EARNINGS PER COMMON SHARE The following table sets forth the computation of basic earnings per common share and diluted earnings per common share: Three Months Ended March 31 2019 2018 (In millions, except per share amounts) Numerator: Income from continuing operations $ 394 $ 414 Preferred stock dividends (16 ) (16 ) Income from continuing operations available to common shareholders 378 398 Income from discontinued operations, net of tax — — Net income available to common shareholders $ 378 $ 398 Denominator: Weighted-average common shares outstanding—basic 1,019 1,127 Potential common shares 9 14 Weighted-average common shares outstanding—diluted 1,028 1,141 Earnings per common share from continuing operations available to common shareholders (1) : Basic $ 0.37 $ 0.35 Diluted 0.37 0.35 Earnings per common share from discontinued operations (1)(2)(3) : Basic $ 0.00 $ 0.00 Diluted 0.00 0.00 Earnings per common share (1) : Basic $ 0.37 $ 0.35 Diluted 0.37 0.35 _________ (1) Certain per share amounts may not appear to reconcile due to rounding. (2) On April 4, 2018, Regions entered into a stock purchase agreement to sell Regions Insurance Group, Inc to BB&T Insurance Holdings, Inc. The transaction closed on July 2, 2018. The transaction generated an after-tax gain of $196 million . On January 11, 2012, Regions entered into a stock purchase agreement to sell Morgan Keegan and Company and related affiliates to Raymond James Financial Inc. The sale closed on April 2, 2012. (3) In a period where there is a loss from discontinued operations, basic weighted-average common shares outstanding are used to determine both basic and diluted earnings per share. The effects from the assumed exercise of 5 million and 6 million stock options, restricted stock units and awards and performance stock units for the three months ended March 31, 2019 and 2018, respectively, were 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.

Pension and Other Postretiremen

Pension and Other Postretirement Benefits	3 Months Ended
	Mar. 31, 2019
Defined Benefit Plan [Abstract]
Pension and Other Postretirement Benefits	PENSION AND OTHER POSTRETIREMENT BENEFITS Regions' defined benefit pension plans cover certain employees as the pension plans are closed to new entrants. The Company also sponsors a SERP, which is a non-qualified pension plan that provides certain senior executive officers defined benefits in relation to their compensation. Net periodic pension cost (credit) includes the following components: Qualified Plans Non-qualified Plans Total Three Months Ended March 31 2019 2018 2019 2018 2019 2018 (In millions) Service cost $ 8 $ 9 $ 1 $ 1 $ 9 $ 10 Interest cost 19 18 1 1 20 19 Expected return on plan assets (34 ) (37 ) — — (34 ) (37 ) Amortization of actuarial loss 8 8 1 1 9 9 Net periodic pension cost (credit) $ 1 $ (2 ) $ 3 $ 3 $ 4 $ 1 The service cost component of net periodic pension cost (credit) is recorded in salaries and employee benefits on the consolidated statements of income. Components other than service cost are recorded in other non-interest expense on the consolidated statements of income. Regions' funding policy for the qualified plans is to contribute annually at least the amount required by IRS minimum funding standards. Regions made no contributions during the first three months of 2019. 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 three months ended March 31, 2019 or 2018 .

Derivative Financial Instrument

Derivative Financial Instruments and Hedging Activities	3 Months Ended
	Mar. 31, 2019
Derivative Instruments and Hedging Activities Disclosure [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 March 31, 2019 and December 31, 2018 . March 31, 2019 December 31, 2018 Notional Amount Estimated Fair Value Notional Amount Estimated Fair Value Gain (1) Loss (1) Gain (1) Loss (1) (In millions) Derivatives in fair value hedging relationships: Interest rate swaps $ 3,731 $ 3,231 Derivatives in cash flow hedging relationships: Interest rate swaps 9,750 8,750 Interest rate floors (2) 4,750 $ 106 3,250 $ 72 Total derivatives designated as hedging instruments $ 18,231 $ 106 $ 15,231 $ 72 Derivatives not designated as hedging instruments: Interest rate swaps $ 52,521 $ 261 $ 200 $ 49,737 $ 193 $ 237 Interest rate options 7,370 25 13 7,178 29 20 Interest rate futures and forward commitments 4,182 4 8 7,961 4 9 Other contracts 7,027 31 36 7,287 72 74 Total derivatives not designated as hedging instruments $ 71,100 $ 321 $ 257 $ 72,163 $ 298 $ 340 Total derivatives $ 89,331 $ 427 $ 257 $ 87,394 $ 370 $ 340 Total gross derivative instruments, before netting $ 427 $ 257 $ 370 $ 340 Less: Legally enforceable master netting agreements 90 90 108 108 Less: Cash collateral received/posted 131 79 135 71 Total gross derivative instruments, after netting (3) $ 206 $ 88 $ 127 $ 161 _________ (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. There is no fair value presented for contracts that are characterized as settled daily. (2) Estimated fair value includes premium and change in fair value of the interest rate floors. (3) As of both March 31, 2019 and December 31, 2018 , financial instruments posted of $24 million were not offset in 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. See Note 1 "Summary of Significant Accounting Policies" of the Annual Report on Form 10-K for the year ended December 31, 2018 , for additional information regarding accounting policies for derivatives. FAIR VALUE HEDGES Fair value hedge relationships mitigate exposure to the change in fair value of an asset, liability or firm commitment. Regions enters into interest rate swap agreements to manage interest rate exposure on the Company’s fixed-rate borrowings. 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 debt securities. These agreements involve the payment of fixed-rate amounts in exchange for floating-rate interest receipts. CASH FLOW HEDGES Cash flow hedge relationships mitigate exposure to the variability of future cash flows or other forecasted transactions. Regions enters into interest rate swap and floor 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 and interest rate floors. Regions recognized an unrealized after-tax gain of $47 million and $136 million in accumulated other comprehensive income (loss) at March 31, 2019 and 2018 , respectively, related to discontinued cash flow hedges of loan instruments, which will be amortized into earnings in conjunction with the recognition of interest payments through 2025. Regions recognized pre-tax income of $5 million and $15 million during the three months ended March 31, 2019 and 2018 , respectively related to the amortization of discontinued cash flow hedges of loan instruments. Regions expects to reclassify into earnings approximately $31 million in pre-tax expense due to the receipt or payment of interest payments on all cash flow hedges within the next twelve months. Included in this amount is $9 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 March 31, 2019 , and a portion of these hedges are forward starting. The following tables present the effect of hedging derivative instruments on the consolidated statements of income and the total amounts for the respective line items effected: Three Months Ended March 31, 2019 Interest Income Interest Expense Non-interest expense Debt securities-taxable Loans, including fees Deposits Long-term borrowings Other (In millions) Total amounts presented in the consolidated statements of income $ 165 $ 981 $ 108 $ 102 $ 224 Gains/(losses) on fair value hedging relationships: Interest rate contracts: Amounts related to interest settlements on derivatives $ — $ — $ — $ (6 ) $ — Recognized on derivatives (1 ) — — 33 — Recognized on hedged items 1 — — (33 ) — Net income (expense) recognized on fair value hedges $ — $ — $ — $ (6 ) $ — Gains/(losses) on cash flow hedging relationships: (1) Interest rate contracts: Realized gains (losses) reclassified from AOCI into net income (2) $ — $ (8 ) $ — $ — $ — Net income (expense) recognized on cash flow hedges $ — $ (8 ) $ — $ — $ — Three Months Ended March 31, 2018 Interest Income Interest Expense Non-interest expense Securities-taxable Loans, including fees Deposits Long-term borrowings Other (In millions) Total amounts presented in the consolidated statements of income $ 154 $ 851 $ 49 $ 72 $ 225 Gains/(losses) on fair value hedging relationships: Interest rate contracts: Amounts related to interest settlements on derivatives $ — $ — $ — $ (1 ) $ — Recognized on derivatives 3 — — (32 ) — Recognized on hedged items (3 ) — — 32 — Net income (expense) recognized on fair value hedges $ — $ — $ — $ (1 ) $ — Gains/(losses) on cash flow hedging relationships: (1) Interest rate contracts: Realized gains (losses) reclassified from AOCI into net income (2) $ — $ 11 $ — $ — $ — Net income (expense) recognized on cash flow hedges $ — $ 11 $ — $ — $ — _____ (1) See Note 6 for gain or (loss) recognized for cash flow hedges in AOCI. (2) Pre-tax The following table presents the carrying amount and associated cumulative basis adjustment related to the application of hedge accounting that is included in the carrying amount of hedged assets and liabilities in fair value hedging relationships. March 31, 2019 Hedged Items Currently Designated Hedged Items No Longer Designated Carrying Amount of Assets/(Liabilities) Hedge Accounting Basis Adjustment Carrying Amount of Assets/(Liabilities) Hedge Accounting Basis Adjustment (In millions) Debt securities available for sale $ 86 $ 1 $ 653 $ 4 Long-term borrowings (3,652 ) 16 — — December 31, 2018 Hedged Items Currently Designated Hedged Items No Longer Designated Carrying Amount of Assets/(Liabilities) Hedge Accounting Basis Adjustment Carrying Amount of Assets/(Liabilities) Hedge Accounting Basis Adjustment (In millions) Debt securities available for sale $ 85 $ — $ 604 $ 4 Long-term borrowings (3,103 ) 50 — — DERIVATIVES NOT DESIGNATED AS HEDGING INSTRUMENTS The Company holds a portfolio of interest rate swaps, option contracts, and futures and forward commitments that result from transactions with its commercial customers in which they manage their risks by entering into a derivative with Regions. The Company monitors and manages the net risk in this customer portfolio and enters into separate derivative contracts in order to reduce the overall exposure to pre-defined limits. For both derivatives with its end customers and derivatives Regions enters into to mitigate the risk in this portfolio, the Company is subject to market risk and the risk that the counterparty will default. The contracts in this portfolio are not designated as accounting hedges and are marked-to market through earnings (in capital markets fee income and other) and included in other assets and other liabilities, as appropriate. 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 March 31, 2019 and December 31, 2018 , Regions had $320 million and $191 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. Residential mortgage loans held for sale are recorded at fair value with changes in fair value recorded in mortgage income. Commercial mortgage loans held for sale are recorded at either the lower of cost or market or at fair value based on management's election. At March 31, 2019 and December 31, 2018 , Regions had $539 million and $429 million , respectively, in total notional amounts related to these forward sale commitments. Changes in mark-to-market from both interest rate lock commitments and corresponding forward sale commitments related to residential mortgage loans are included in mortgage income. Changes in mark-to-market from both interest rate lock commitments and corresponding forward sale commitments related to commercial mortgage loans are included in capital markets fee income and other. Regions has elected to account for residential MSRs at fair 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 effect of changes in the fair value of its residential MSRs in its consolidated statements of income. As of March 31, 2019 and December 31, 2018 , the total notional amount related to these contracts was $4.0 billion and $5.7 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 months ended March 31, 2019 and 2018 : Three Months Ended March 31 Derivatives Not Designated as Hedging Instruments 2019 2018 (In millions) Capital markets income: Interest rate swaps $ 1 $ 7 Interest rate options 2 7 Interest rate futures and forward commitments 2 1 Other contracts — 2 Total capital markets income 5 17 Mortgage income: Interest rate swaps 20 (18 ) Interest rate options 3 3 Interest rate futures and forward commitments 2 (3 ) Total mortgage income 25 (18 ) $ 30 $ (1 ) Credit risk, defined as all positive exposures not collateralized with cash or other assets or reserved for, at March 31, 2019 and December 31, 2018 , totaled approximately $178 million and $130 million , respectively. These amounts represent 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. Swap participations, whereby Regions has purchased credit protection, entitle Regions to receive a payment from the counterparty if the customer fails to make payment on any amounts due to Regions upon early termination of the swap transaction and have maturities between 2019 and 2026. Swap participations, whereby Regions has sold credit protection have maturities between 2019 and 2038. For contracts where Regions sold credit protection, Regions would be required to make payment to the counterparty if 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 March 31, 2019 was approximately $563 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 March 31, 2019 and 2018 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. Regions has bought credit protection in the form of credit default indices. These indices, which meet the definition of credit derivatives, were entered into in the ordinary course of business to economically hedge credit spread risk in commercial mortgage loans held for sale whereby the fair value option has been elected. Credit derivatives, whereby Regions has purchased credit protection, entitle Regions to receive a payment from the counterparty if losses on the underlying index exceed a certain threshold, dependent upon the tranche rating of the capital structure. CONTINGENT FEATURES Certain of Regions’ derivative instrument contracts with broker-dealers contain credit-related termination provisions and/or credit-related provisions regarding the posting of collateral, 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. The aggregate fair values of all derivative instruments with any credit-risk-related contingent features that were in a liability position on March 31, 2019 and December 31, 2018 , were $50 million and $45 million , respectively, for which Regions had posted collateral of $49 million and $43 million , respectively, in the normal course of business.

Fair Value Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2019
Fair Value Disclosures [Abstract]
Fair Value Measurements	FAIR VALUE MEASUREMENTS See Note 1 “Summary of Significant Accounting Policies” to the consolidated financial statements of the Annual Report on Form 10-K for the year ended December 31, 2018 for a description of valuation methodologies for assets and liabilities measured at fair value on a recurring and non-recurring basis. Assets and liabilities measured at fair value rarely transfer between Level 1 and Level 2 measurements. Marketable equity securities and debt securities available for sale may be periodically transferred to or from Level 3 valuation based on management’s conclusion regarding the observability of inputs used in valuing the securities. Such transfers are accounted for as if they occur at the beginning of a reporting period. The following table presents assets and liabilities measured at estimated fair value on a recurring basis and non-recurring basis as of March 31, 2019 and December 31, 2018 : March 31, 2019 December 31, 2018 Level 1 Level 2 Level 3 (1) Total Estimated Fair Value Level 1 Level 2 Level 3 (1) Total Estimated Fair Value (In millions) Recurring fair value measurements Debt securities available for sale: U.S. Treasury securities $ 174 $ — $ — $ 174 $ 280 $ — $ — $ 280 Federal agency securities — 45 — 45 — 43 — 43 Mortgage-backed securities (MBS): Residential agency — 17,441 — 17,441 — 16,624 — 16,624 Residential non-agency — — 2 2 — — 2 2 Commercial agency — 4,177 — 4,177 — 3,835 — 3,835 Commercial non-agency — 730 — 730 — 760 — 760 Corporate and other debt securities — 1,211 6 1,217 — 1,182 3 1,185 Total debt securities available for sale $ 174 $ 23,604 $ 8 $ 23,786 $ 280 $ 22,444 $ 5 $ 22,729 Loans held for sale $ — $ 284 $ — $ 284 $ — $ 251 $ — $ 251 Marketable equity securities $ 348 $ — $ — $ 348 $ 429 $ — $ — $ 429 Residential mortgage servicing rights $ — $ — $ 386 $ 386 $ — $ — $ 418 $ 418 Derivative assets: Interest rate swaps $ — $ 261 $ — $ 261 $ — $ 193 $ — $ 193 Interest rate options — 123 8 131 — 96 5 101 Interest rate futures and forward commitments — 4 — 4 — 4 — 4 Other contracts 1 30 — 31 2 70 — 72 Total derivative assets $ 1 $ 418 $ 8 $ 427 $ 2 $ 363 $ 5 $ 370 Derivative liabilities: Interest rate swaps $ — $ 200 $ — $ 200 $ — $ 237 $ — $ 237 Interest rate options — 13 — 13 — 20 — 20 Interest rate futures and forward commitments — 8 — 8 — 9 — 9 Other contracts 1 31 4 36 2 69 3 74 Total derivative liabilities $ 1 $ 252 $ 4 $ 257 $ 2 $ 335 $ 3 $ 340 Non-recurring fair value measurements Loans held for sale $ — $ — $ 14 $ 14 $ — $ — $ 10 $ 10 Foreclosed property and other real estate — 19 7 26 — 16 3 19 _________ (1) All following disclosures related to Level 3 recurring and non-recurring assets do not include those deemed to be immaterial. 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 ALCO in a holistic approach to managing price fluctuation risks. The following tables illustrate rollforwards for all material assets and liabilities measured at fair value on a recurring basis using significant unobservable inputs (Level 3) for the three months ended March 31, 2019 and 2018 , respectively. The net changes in realized gains (losses) included in earnings related to Level 3 assets and liabilities held at March 31, 2019 and 2018 are not material. Three Months Ended March 31, 2019 Opening Total Realized / Unrealized Gains or Losses Purchases Sales Issuances Settlements Transfers Transfers Closing Included in Earnings Included in Other Compre- hensive Income (Loss) (In millions) Level 3 Instruments Only Residential mortgage servicing rights $ 418 (39 ) (1) 7 — — — — — — $ 386 Three Months Ended March 31, 2018 Opening Total Realized / Purchases Sales Issuances Settlements Transfers Transfers Closing Included Included (In millions) Level 3 Instruments Only Residential mortgage servicing rights $ 336 12 (1) — 8 — — — — — $ 356 _________ (1) Included in mortgage income. The following table presents the fair value adjustments related to non-recurring fair value measurements: Three Months Ended March 31 2019 2018 (In millions) Loans held for sale $ (2 ) $ (3 ) Foreclosed property and other real estate (8 ) (5 ) The following tables present detailed information regarding material assets and liabilities measured at fair value using significant unobservable inputs (Level 3) as of March 31, 2019 , and December 31, 2018 . 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 March 31, 2019 , and December 31, 2018 , are included. Following the tables are descriptions of the valuation techniques and the sensitivity of the techniques to changes in the significant unobservable inputs. March 31, 2019 Level 3 Valuation Technique Unobservable Input(s) Quantitative Range of Unobservable Inputs and (Weighted-Average) (Dollars in millions) Recurring fair value measurements: Residential mortgage servicing rights (1) $386 Discounted cash flow Weighted-average CPR (%) 4.6% - 45.5% (10.4%) OAS (%) 5.7% - 15.0% (7.6%) _________ (1) See Note 4 for additional disclosures related to assumptions used in the fair value calculation for residential mortgage servicing rights. December 31, 2018 Level 3 Valuation Technique Unobservable Input(s) Quantitative Range of Unobservable Inputs and (Weighted-Average) (Dollars in millions) Recurring fair value measurements: Residential mortgage servicing rights (1) $418 Discounted cash flow Weighted-average CPR (%) 4.4% - 42.6% (9.0%) OAS (%) 5.7% - 15.0% (7.6%) _________ (1) See Note 7 to the consolidated financial statements of the Annual Report on Form 10-K for the year ended December 31, 2018 for additional disclosures related to assumptions used in the fair value calculation for residential mortgage servicing rights. RECURRING FAIR VALUE MEASUREMENTS USING SIGNIFICANT UNOBSERVABLE INPUTS Residential mortgage servicing rights The significant unobservable inputs used in the fair value measurement of residential MSRs are OAS and CPR. This valuation 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 including 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 included in the MSR rollforward table in Note 4. See Note 4 for these amounts and additional disclosures related to assumptions used in the fair value calculation for MSRs. FAIR VALUE OPTION Regions has elected the fair value option for all FNMA and FHLMC eligible residential mortgage loans and certain commercial mortgage loans originated with the intent to sell. 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 residential 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: March 31, 2019 December 31, 2018 Aggregate Fair Value Aggregate Unpaid Principal Aggregate Fair Value Less Aggregate Unpaid Principal Aggregate Fair Value Aggregate Unpaid Principal Aggregate Fair Value Less Aggregate Unpaid Principal (In millions) Mortgage loans held for sale, at fair value $ 284 $ 274 $ 10 $ 251 $ 242 $ 9 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 and losses resulting from changes in fair value of these loans, which were recorded in mortgage income in the consolidated statements of income during the three months ended March 31, 2019 and 2018 . 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. Net gains (losses) resulting from changes in fair value Three Months Ended March 31 2019 2018 (In millions) Mortgage loans held for sale, at fair value $ — $ (3 ) 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 March 31, 2019 are as follows: March 31, 2019 Carrying Amount Estimated Fair Value (1) Level 1 Level 2 Level 3 (In millions) Financial assets: Cash and cash equivalents $ 3,807 $ 3,807 $ 3,807 $ — $ — Debt securities held to maturity 1,451 1,454 — 1,454 — Debt securities available for sale 23,786 23,786 174 23,604 8 Loans held for sale 318 318 — 302 16 Loans (excluding leases), net of unearned income and allowance for loan losses (2)(3) 82,379 81,608 — — 81,608 Other earning assets (4) 1,268 1,268 348 920 — Derivative assets 427 427 1 418 8 Financial liabilities: Derivative liabilities 257 257 1 252 4 Deposits 95,720 95,772 — 95,772 — Short-term borrowings 1,600 1,600 — 1,600 — Long-term borrowings 12,957 13,328 — 12,400 928 Loan commitments and letters of credit 73 488 — — 488 _________ (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 estimated changes in interest rates, market liquidity and credit spreads in the periods they are deemed to have occurred. (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 on the loan portfolio's net carrying amount at March 31, 2019 was $771 million or 0.9 percent. (3) Excluded from this table is the capital lease carrying amount of $1.2 billion at March 31, 2019 . (4) Excluded from this table is the operating lease carrying amount of $349 million at March 31, 2019 . 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, 2018 are as follows: December 31, 2018 Carrying Amount Estimated Fair Value (1) Level 1 Level 2 Level 3 (In millions) Financial assets: Cash and cash equivalents $ 3,538 $ 3,538 $ 3,538 $ — $ — Debt securities held to maturity 1,482 1,460 — 1,460 — Debt securities available for sale 22,729 22,729 280 22,444 5 Loans held for sale 304 304 — 287 17 Loans (excluding leases), net of unearned income and allowance for loan losses (2)(3) 81,054 79,386 — — 79,386 Other earning assets (4) 1,350 1,350 429 921 — Derivative assets 370 370 2 363 5 Financial liabilities: Derivative liabilities 340 340 2 335 3 Deposits 94,491 94,531 — 94,531 — Short-term borrowings 1,600 1,600 — 1,600 — Long-term borrowings 12,424 12,610 — 12,408 202 Loan commitments and letters of credit 79 435 — — 435 _________ (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 estimated changes in interest rates, market liquidity and credit spreads in the periods they are deemed to have occurred. (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 on the loan portfolio's net carrying amount at December 31, 2018 was $1.7 billion or 2.1 percent. (3) Excluded from this table is the capital lease carrying amount of $1.1 billion at December 31, 2018 . (4) Excluded from this table is the operating lease carrying amount of $369 million at December 31, 2018 .

Business Segment Information

Business Segment Information	3 Months Ended
	Mar. 31, 2019
Segment Reporting [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: Corporate Bank, Consumer Bank, and Wealth Management, with the remainder split between Discontinued Operations and Other. Additional information about the Company's reportable segments is included in Regions' Annual Report on Form 10-K for the year ended December 31, 2018. The application and development of management reporting methodologies is a dynamic process and is subject to periodic enhancements. As these enhancements are made, financial results presented by each reportable segment may be periodically revised. Discontinued operations includes all brokerage and investment activities associated with the sale of Morgan Keegan which closed on April 2, 2012, as well as the sale of Regions Insurance Group, Inc. and related affiliates, which closed on July 2, 2018. See Note 3 "Discontinued Operations" to the consolidated financial statements in the Annual Report on Form 10-K for the year ended December 31, 2018 for further discussion. The following tables present financial information for each reportable segment for the period indicated. Three Months Ended March 31, 2019 Corporate Bank Consumer Bank Wealth Management Other Continuing Operations Discontinued Operations Consolidated (In millions) Net interest income and other financing income (loss) $ 358 $ 576 $ 47 $ (33 ) $ 948 $ — $ 948 Provision (credit) for loan losses 43 83 4 (39 ) 91 — 91 Non-interest income 131 281 78 12 502 — 502 Non-interest expense 232 514 88 26 860 — 860 Income (loss) before income taxes 214 260 33 (8 ) 499 — 499 Income tax expense (benefit) 53 65 8 (21 ) 105 — 105 Net income (loss) $ 161 $ 195 $ 25 $ 13 $ 394 $ — $ 394 Average assets $ 53,851 $ 35,401 $ 2,203 $ 34,088 $ 125,543 $ — $ 125,543 Three Months Ended March 31, 2018 Corporate Bank Consumer Bank Wealth Management Other Continuing Operations Discontinued Operations Consolidated (In millions) Net interest income and other financing income (loss) $ 337 $ 531 $ 49 $ (8 ) $ 909 $ — $ 909 Provision (credit) for loan losses 46 77 4 (137 ) (10 ) — (10 ) Non-interest income 144 277 77 9 507 34 541 Non-interest expense 229 517 90 48 884 34 918 Income (loss) before income taxes 206 214 32 90 542 — 542 Income tax expense (benefit) 52 54 8 14 128 — 128 Net income (loss) $ 154 $ 160 $ 24 $ 76 $ 414 $ — $ 414 Average assets $ 51,037 $ 34,951 $ 2,359 $ 34,977 $ 123,324 $ 170 $ 123,494

Commitments, Contingencies and

Commitments, Contingencies and Guarantees	3 Months Ended
	Mar. 31, 2019
Commitments and Contingencies Disclosure [Abstract]
Commitments, Contingencies and Guarantees	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: March 31, 2019 December 31, 2018 (In millions) Unused commitments to extend credit $ 51,608 $ 51,406 Standby letters of credit 1,396 1,428 Commercial letters of credit 124 44 Liabilities associated with standby letters of credit 24 28 Assets associated with standby letters of credit 25 29 Reserve for unfunded credit commitments 50 51 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 expire 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 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. To the extent that Regions has an insurance recovery, the proceeds are recorded in the period the recovery is received. In addition, 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. When it is practicable, Regions estimates possible loss contingencies, whether or not there is an accrued probable loss. When Regions is able to estimate such possible losses, and when it is reasonably possible Regions could incur losses in excess of amounts accrued, Regions discloses the aggregate estimation of such possible losses. Regions currently estimates that it is reasonably possible that it may experience losses in excess of what Regions has accrued in an aggregate amount of up to approximately $20 million as of March 31, 2019, 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 reasonably possible estimate includes legal contingencies that are subject to the indemnification agreement with Raymond James. Assessments of litigation and claims exposure are difficult because they involve inherently unpredictable factors including, but not limited to, the following: whether the proceeding is in the early stages; whether damages are unspecified, unsupported, or uncertain; whether there is a potential for punitive or other pecuniary damages; whether the matter involves legal uncertainties, including novel issues of law; whether the matter involves multiple parties and/or jurisdictions; whether discovery has begun or is not complete; whether meaningful settlement discussions have commenced; and whether the lawsuit involves class allegations. Assessments of class action litigation, which is generally more complex than other types of litigation, are particularly difficult, especially in the early stages of the proceeding when it is not known whether a class will be certified or how a potential class, if certified, will be defined. As a result, Regions may be unable to estimate reasonably possible losses with respect to some of the matters disclosed below, and the aggregated estimated amount discussed above may not include an estimate for every matter disclosed below. Regions is involved in formal and informal information-gathering requests, investigations, reviews, examinations and proceedings by various governmental regulatory agencies, law enforcement authorities and self-regulatory bodies regarding Regions’ business, Regions' business practices and policies, and the conduct of persons with whom Regions 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 the one 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 is cooperating with an investigation by the United States Attorney’s Office for the Eastern District of New York pertaining to Regions' banking relationship with a former customer and accounts maintained by related entities and individuals affiliated with the customer who may be involved in criminal activity, as well as related aspects of Regions' Anti-Money Laundering and Bank Secrecy Act compliance program. 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 3 in the Annual Report on Form 10-K for the year ended December 31, 2018, 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. As of March 31, 2019 , the carrying value and fair value of the indemnification obligation were immaterial. FANNIE MAE DUS LOSS SHARE GUARANTEE Regions is a DUS lender. The DUS program provides liquidity to the multi-family housing market. Regions services loans sold to Fannie Mae and is required to provide a loss share guarantee equal to one-third of the majority of its DUS servicing portfolio. At both March 31, 2019 and December 31, 2018 , the Company's DUS servicing portfolio totaled approximately $3.6 billion . Regions' maximum quantifiable contingent liability related to its loss share guarantee was approximately $1.2 billion at both March 31, 2019 and December 31, 2018 . The Company would be liable for this amount only if all of the loans it services for Fannie Mae, for which the Company retains some risk of loss, were to default and all of the collateral underlying these loans was determined to be without value at the time of settlement. Therefore, the maximum quantifiable contingent liability is not representative of the actual loss the Company would be expected to incur. The estimated fair value of the associated loss share guarantee recorded as a liability on the Company's consolidated balance sheets was approximately $4 million at both March 31, 2019 and December 31, 2018 . Refer to Note 1 "Summary of Significant Accounting Policies" to the consolidated financial statements in the Annual Report on Form 10-K for the year ended December 31, 2018, for additional information.

Revenue Recognition

Revenue Recognition	3 Months Ended
	Mar. 31, 2019
Revenue Recognition [Abstract]
Revenue Recognition	REVENUE RECOGNITION The Company records revenue when control of the promised products or services is transferred to the customer, in an amount that reflects the consideration Regions expects to be entitled to receive in exchange for those products or services. Refer to Note 1 “Summary of Significant Accounting Policies” to the consolidated financial statements to the Annual Report on Form 10-K for the year ended December 31, 2018 , for descriptions of the accounting and reporting policies related to revenue recognition. The following tables present total non-interest income disaggregated by major product category for each reportable segment for the period indicated. Three Months Ended March 31, 2019 Corporate Bank Consumer Wealth Other Segment Revenue Other (1) Continuing Discontinued (In millions) Service charges on deposit accounts $ 39 $ 133 $ — $ 1 $ 2 $ 175 $ — Card and ATM fees 13 99 — 1 (4 ) 109 — Investment management and trust fee income — — 57 — — 57 — Capital markets income 21 — — — 21 42 — Mortgage income — — — — 27 27 — Investment services fee income — — 19 — — 19 — Commercial credit fee income — — — — 18 18 — Bank-owned life insurance — — — — 23 23 — Securities gains (losses), net — — — — (7 ) (7 ) — Market value adjustments on employee benefit assets - defined benefit — — — — 5 5 — Market value adjustments on employee benefit assets - other — — — — (1 ) (1 ) — Other miscellaneous income 6 20 2 (6 ) 13 35 — $ 79 $ 252 $ 78 $ (4 ) $ 97 $ 502 $ — Three Months Ended March 31, 2018 Corporate Bank Consumer Wealth Other Segment Revenue Other (1) Continuing Discontinued (In millions) Service charges on deposit accounts $ 37 $ 131 $ 1 $ 1 $ 1 $ 171 $ — Card and ATM fees 12 96 — — (4 ) 104 — Investment management and trust fee income — — 58 — — 58 — Capital markets income 18 — — — 32 50 — Mortgage income — — — — 38 38 — Investment services fee income — — 17 — — 17 — Commercial credit fee income — — — — 17 17 — Bank-owned life insurance — — — — 17 17 — Securities gains (losses), net — — — — — — — Market value adjustments on employee benefit assets - defined benefit — — — — (1 ) (1 ) — Market value adjustments on employee benefit assets - other — — — — — — — Insurance commissions and fees — — — — — — 34 Other miscellaneous income 5 9 1 — 21 36 — $ 72 $ 236 $ 77 $ 1 $ 121 $ 507 $ 34 ________ (1) This revenue is not impacted by the accounting guidance related to revenue from contracts with customers and continues to be recognized when earned in accordance with the Company's existing revenue recognition policy. Regions elected the practical expedient related to contract costs and will continue to expense sales commissions and any related contract costs when incurred because the amortization period would have been one year or less. Regions also elected the practical expedient related to remaining performance obligations and therefore did not disclose the value of unsatisfied performance obligations for 1) contracts with an original expected length of one year or less and 2) contracts for which revenue is recognized at the amount to which Regions has the right to invoice for services performed.

Recent Accounting Pronouncement

Recent Accounting Pronouncements	3 Months Ended
	Mar. 31, 2019
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Recent Accounting Pronouncements	RECENT ACCOUNTING PRONOUNCEMENTS Standard Description Required Date of Adoption Effect on Regions' financial statements or other significant matters Standards Adopted (or partially adopted) in 2019 ASU 2016-02, Leases ASU 2018-20, Narrow-Scope Improvements for Lessors ASU 2019-01, Codification Improvements This ASU creates ASC Topic 842, Leases, and supersedes Topic 840, Leases. The new guidance requires lessees to record a right-of-use asset and a corresponding liability equal to the present value of future rental payments on their balance sheets for all leases with a term greater than one year. There are not significant changes to lessor accounting; however, there were certain improvements made to align lessor accounting with the lessee accounting model and Topic 606, Revenue from Contracts with Customers. This guidance expands both quantitative and qualitative required disclosures. January 1, 2019 Regions adopted the standard on January 1, 2019 using the optional transition method, which allowed for a modified retrospective method of adoption with an immaterial cumulative effect adjustment to retained earnings without restating comparable periods. Regions elected the relief package of practical expedients for which there is no requirement to reassess existence of leases, their classification, and initial direct costs. Regions also applied the exemption for short-term leases with a term of less than one year, whereby Regions does not recognize a lease liability or right-of-use asset on the balance sheet but instead recognizes lease payments as an expense over the lease term as appropriate. For property leases, Regions did not elect the practical expedient to combine lease and non-lease components. The standard resulted in recognition of right-of-use assets and lease liabilities for operating leases, while accounting for finance leases remains largely unchanged. Adoption of the standard resulted in the recognition of additional right-of-use assets and lease liabilities for operating leases of approximately $451 million as of January 1, 2019. Operating lease right-of-use assets and liabilities are recognized at the commencement date based on the present value of lease payments over the lease term. As most leases do not state an implicit rate, Regions utilizes the incremental borrowing rate based on information available at the commencement date to determine the present value of the lease payments. Lease terms may include options to extend or terminate the lease when it is reasonably certain that the option will be exercised. Lease expenses are recognized on a straight-line basis over the lease term. ASU 2017-08, Receivables- Nonrefundable Fees and Other Costs This ASU amends Subtopic 310-20, Receivables-Nonrefundable Fees and Other Costs, to shorten the amortization period for certain purchased callable debt securities held at a premium to the earliest call date. Current guidance generally requires entities to amortize a premium as a yield adjustment over the contractual life of the instrument. Shortening the amortization period is generally expected to more closely align the recognition of interest income with expectations incorporated into the pricing of the underlying securities. The amendments do not affect the accounting treatment of discounts. This ASU should be adopted on a modified retrospective basis. January 1, 2019 The adoption of this guidance did not have a material impact. ASU 2018-07, This ASU amends and expands the scope of Topic 718, Compensation-Stock Compensation, to include share-based payment transactions for acquiring goods and services for non-employees. Under this guidance, the accounting for share-based payments to non-employees and employees will be substantially aligned. The measurement of equity-classified non-employee awards will now be fixed at the grant date. January 1, 2019 The adoption of this guidance did not have a material impact. ASU 2018-09, Codification Improvements The FASB issued this ASU to clarify, improve, and correct errors in the Codification. The ASU covers nine amendments, which affect a wide variety of Topics including business combinations, debt, derivatives and hedging, and defined contribution pension plans. Some amendments do not require transition guidance and are effective upon issuance, while others will be applicable for Regions starting in 2019. However, all amendments are expected to have an immaterial impact to Regions. January 1, 2019 The adoption of this guidance did not have a material impact. ASU 2018-16, Derivatives and Hedging This ASU amends Topic 815, Derivatives and Hedging, to expand the list of U.S. benchmark interest rates permitted in applying hedge accounting. The amendments permit all entities that elect to apply hedge accounting to benchmark interest rate hedges under ASC 815, Derivatives and Hedging, to use the OIS rate based on the SOFR as a U.S. benchmark interest rate in addition to the four eligible U.S. benchmark interest rates. The amendments should be applied prospectively for qualifying new or redesignated hedging relationships entered into on or after the date of adoption. January 1, 2019 The adoption of this guidance did not have a material impact. Standard Description Required Date of Adoption Effect on Regions' financial statements or other significant matters Standards Not Yet Adopted ASU 2016-13, Measurement of Credit Losses on Financial Instruments ASU 2018-19 Codification Improvements to Topic 326 This ASU amends Topic 326, Financial Instruments- Credit Losses to replace the current incurred loss accounting model with a current expected credit loss approach (CECL) for financial instruments measured at amortized cost and other commitments to extend credit. The amendments require entities to consider all available relevant information when estimating current expected credit losses, including details about past events, current conditions, and reasonable and supportable forecasts. The resulting allowance for credit losses is to reflect the portion of the amortized cost basis that the entity does not expect to collect. The amendments also eliminate the current accounting model for purchased credit impaired loans and debt securities. Additional quantitative and qualitative disclosures are required upon adoption. January 1, 2020 Regions’ cross-functional implementation team, which is co-led by Finance and Risk Management, has developed a project plan that results in running a CECL parallel production during 2019 and the adoption of the standard in the first quarter of 2020. Key project implementation activities for 2019 include finalization of models, the qualitative framework, and the production process; completion of documentation, policies and disclosures; development of supporting analytics; and process and control testing. The project implementation plan also establishes a parallel processing timeline which began with a limited parallel run in the first quarter of 2019. The first quarter 2019 limited parallel run included running, validating and reconciling all models. However, the qualitative framework and certain internal controls have not been fully developed and therefore were not included in the first quarter parallel run. Parallel runs will be enhanced throughout the year to include the qualitative framework, supporting analytics, end-to-end governance, internal controls and disclosures. Regions provides updates to senior management and to the Audit Committee and Risk Committee of the Board of Directors. These communications provide an update on the status of the implementation as discussed above. Adoption of the standard may result in an overall material increase in the allowance for credit losses given the change from accounting for losses inherent in the loan portfolio to accounting for losses over the remaining contractual life of the portfolio. However, the impact at adoption will be influenced by the portfolios’ composition and quality at the adoption date as well as economic conditions and forecasts at that time. Based on initial modeling, the consumer loan portfolios are expected to experience an increase due to longer-dated loans in products such as residential first mortgages and home equity lending products. Additionally, there could be increases or decreases in the allowance in certain other loan portfolios at adoption. Regions expects no material allowance on held to maturity securities because most of this portfolio consists of agency-backed securities that inherently have an immaterial risk of loss. Additionally, Regions expects no material impact to available for sale securities. ASU 2017-04, Simplifying the Test for Goodwill Impairment This ASU amends Topic 350, Intangibles-Goodwill and Other, and eliminates Step 2 from the goodwill impairment test. January 1, 2020 Early adoption is permitted. Regions believes the adoption of this guidance will not have a material impact. Regions does not plan to early adopt. ASU 2018-15, Customer’s Accounting for Fees Paid in a Cloud Computing Arrangement This ASU amends Topic 350-40, Intangibles-Goodwill and Other-Internal-Use Software, regarding a customer's accounting for implementation, set-up, and other upfront costs incurred in a cloud computing arrangement that is hosted by the vendor, i.e. a service contract. Customers will apply the same criteria for capitalizing implementation costs as they would for an arrangement that has a software license. The amendments also prescribe the balance sheet, income statement, and cash flow classification of the capitalized implementation costs and related amortization expense, and require additional quantitative and qualitative disclosures. January 1, 2020 Early adoption is permitted. Regions believes the adoption of this guidance will not have a material impact. Regions does not plan to early adopt. ASU 2018-17, Targeted Improvements to Related Party Guidance for Variable Interest Entities This ASU amends Topic 810, Consolidation, guidance on how all reporting entities evaluate indirect interests held through related parties in common control arrangements when determining whether fees paid to decision makers and service providers are variable interests. January 1, 2020 Early adoption is permitted. Regions believes the adoption of this guidance will not have a material impact. Regions does not plan to early adopt.

Securities (Tables)

Securities (Tables)	3 Months Ended
	Mar. 31, 2019
Investments, Debt and Equity Securities [Abstract]
Schedule Of Amortized Cost, Gross Unrealized Gains and Losses, And Estimated Fair Value Of Debt Securities Available For Sale And Debt Securities Held To Maturity	The amortized cost, gross unrealized gains and losses, and estimated fair value of debt securities held to maturity and debt securities available for sale are as follows: March 31, 2019 Recognized in OCI (1) Not Recognized in OCI Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Carrying Value Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value (In millions) Debt securities held to maturity: Mortgage-backed securities: Residential agency $ 853 $ — $ (31 ) $ 822 $ 7 $ (3 ) $ 826 Commercial agency 632 — (3 ) 629 4 (5 ) 628 $ 1,485 $ — $ (34 ) $ 1,451 $ 11 $ (8 ) $ 1,454 Debt securities available for sale: U.S. Treasury securities $ 175 $ 1 $ (2 ) $ 174 $ 174 Federal agency securities 45 — — 45 45 Mortgage-backed securities: Residential agency 17,639 59 (257 ) 17,441 17,441 Residential non-agency 2 — — 2 2 Commercial agency 4,188 17 (28 ) 4,177 4,177 Commercial non-agency 731 3 (4 ) 730 730 Corporate and other debt securities 1,211 12 (6 ) 1,217 1,217 $ 23,991 $ 92 $ (297 ) $ 23,786 $ 23,786 December 31, 2018 Recognized in OCI (1) Not Recognized in OCI Amortized Gross Unrealized Gains Gross Unrealized Losses Carrying Value Gross Gross Estimated (In millions) Debt securities held to maturity: Mortgage-backed securities: Residential agency $ 883 $ — $ (32 ) $ 851 $ 1 $ (10 ) $ 842 Commercial agency 634 — (3 ) 631 — (13 ) 618 $ 1,517 $ — $ (35 ) $ 1,482 $ 1 $ (23 ) $ 1,460 Debt securities available for sale: U.S. Treasury securities $ 284 $ — $ (4 ) $ 280 $ 280 Federal agency securities 43 — — 43 43 Mortgage-backed securities: Residential agency 17,064 26 (466 ) 16,624 16,624 Residential non-agency 2 — — 2 2 Commercial agency 3,891 8 (64 ) 3,835 3,835 Commercial non-agency 768 2 (10 ) 760 760 Corporate and other debt securities 1,206 2 (23 ) 1,185 1,185 $ 23,258 $ 38 $ (567 ) $ 22,729 $ 22,729 _________ (1) The gross unrealized losses recognized in OCI on securities held to maturity resulted from a transfer of securities available for sale to held to maturity in the second quarter of 2013.
Schedule Of Cost And Estimated Fair Value Of Debt Securities Available For Sale And Debt Securities Held To Maturity By Contractual Maturity	The amortized cost and estimated fair value of debt securities held to maturity and debt securities available for sale at March 31, 2019 , 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 Cost Estimated Fair Value (In millions) Debt securities held to maturity: Mortgage-backed securities: Residential agency $ 853 $ 826 Commercial agency 632 628 $ 1,485 $ 1,454 Debt securities available for sale: Due in one year or less $ 71 $ 71 Due after one year through five years 956 958 Due after five years through ten years 350 352 Due after ten years 54 55 Mortgage-backed securities: Residential agency 17,639 17,441 Residential non-agency 2 2 Commercial agency 4,188 4,177 Commercial non-agency 731 730 $ 23,991 $ 23,786
Schedule Of Gross Unrealized Losses And Estimated Fair Value Of Debt Securities Available For Sale and Held to Maturity	The following tables present gross unrealized losses and the related estimated fair value of debt securities held to maturity and debt securities available for sale at March 31, 2019 and December 31, 2018 . For debt securities transferred to held to 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 for twelve months or more. March 31, 2019 Less Than Twelve Months Twelve Months or More Total Estimated Fair Value Gross Unrealized Losses Estimated Fair Value Gross Unrealized Losses Estimated Fair Value Gross Unrealized Losses (In millions) Debt securities held to maturity: Mortgage-backed securities: Residential agency $ — $ — $ 826 $ (27 ) $ 826 $ (27 ) Commercial agency — — 160 (8 ) 160 (8 ) $ — $ — $ 986 $ (35 ) $ 986 $ (35 ) Debt securities available for sale: U.S. Treasury securities $ — $ — $ 149 $ (2 ) $ 149 $ (2 ) Mortgage-backed securities: Residential agency 1,366 (10 ) 11,801 (247 ) 13,167 (257 ) Commercial agency — — 2,937 (28 ) 2,937 (28 ) Commercial non-agency — — 444 (4 ) 444 (4 ) Corporate and other debt securities 57 (1 ) 380 (5 ) 437 (6 ) $ 1,423 $ (11 ) $ 15,711 $ (286 ) $ 17,134 $ (297 ) December 31, 2018 Less Than Twelve Months Twelve Months or More Total Estimated Gross Estimated Gross Estimated Gross (In millions) Debt securities held to maturity: Mortgage-backed securities: Residential agency $ — $ — $ 842 $ (42 ) $ 842 $ (42 ) Commercial agency 486 (7 ) 132 (9 ) 618 (16 ) $ 486 $ (7 ) $ 974 $ (51 ) $ 1,460 $ (58 ) Debt securities available for sale: U.S. Treasury securities $ — $ — $ 261 $ (4 ) $ 261 $ (4 ) Mortgage-backed securities: Residential agency 2,830 (37 ) 11,010 (429 ) 13,840 (466 ) Commercial agency 1,073 (13 ) 2,254 (51 ) 3,327 (64 ) Commercial non-agency 229 (1 ) 404 (9 ) 633 (10 ) Corporate and other debt securities 659 (11 ) 310 (12 ) 969 (23 ) $ 4,791 $ (62 ) $ 14,239 $ (505 ) $ 19,030 $ (567 )
Schedule of Gross Realized Gains And Gross Realized Losses On Available For Sale Debt Securities	Gross realized gains and gross realized losses on sales of debt 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 March 31 2019 2018 (In millions) Gross realized gains $ — $ — Gross realized losses (6 ) — OTTI (1 ) — Debt securities available for sale gains (losses), net $ (7 ) $ —

Loans and the Allowance for C_2

Loans and the Allowance for Credit Losses (Tables)	3 Months Ended
	Mar. 31, 2019
Receivables [Abstract]
Schedule of Accounts, Notes, Loans and Financing Receivable	The following table presents the distribution of Regions' loan portfolio by segment and class, net of unearned income: March 31, 2019 December 31, 2018 (In millions, net of unearned income) Commercial and industrial $ 40,985 $ 39,282 Commercial real estate mortgage—owner-occupied 5,522 5,549 Commercial real estate construction—owner-occupied 434 384 Total commercial 46,941 45,215 Commercial investor real estate mortgage 4,715 4,650 Commercial investor real estate construction 1,871 1,786 Total investor real estate 6,586 6,436 Residential first mortgage 14,113 14,276 Home equity 9,014 9,257 Indirect—vehicles 2,759 3,053 Indirect—other consumer 2,547 2,349 Consumer credit card 1,274 1,345 Other consumer 1,196 1,221 Total consumer 30,903 31,501 $ 84,430 $ 83,152
Analysis of the Allowance for Credit Losses by Portfolio Segment	The following tables present analyses of the allowance for credit losses by portfolio segment for the three months ended March 31, 2019 and 2018. The total allowance for loan losses and the related loan portfolio ending balances are disaggregated to detail the amounts derived through individual evaluation and collective evaluation for impairment. The allowance for loan losses related to individually evaluated loans is attributable to reserves for non-accrual commercial and investor real estate loans and all TDRs. The allowance for loan losses and the loan portfolio ending balances related to collectively evaluated loans is attributable to the remainder of the portfolio. Three Months Ended March 31, 2019 Commercial Investor Real Estate Consumer Total (In millions) Allowance for loan losses, January 1, 2019 $ 520 $ 58 $ 262 $ 840 Provision (credit) for loan losses 38 (5 ) 58 91 Loan losses: Charge-offs (30 ) — (72 ) (102 ) Recoveries 9 1 14 24 Net loan (losses) recoveries (21 ) 1 (58 ) (78 ) Allowance for loan losses, March 31, 2019 537 54 262 853 Reserve for unfunded credit commitments, January 1, 2019 47 4 — 51 Provision (credit) for unfunded credit losses (1 ) — — (1 ) Reserve for unfunded credit commitments, March 31, 2019 46 4 — 50 Allowance for credit losses, March 31, 2019 $ 583 $ 58 $ 262 $ 903 Portion of ending allowance for loan losses: Individually evaluated for impairment $ 119 $ 3 $ 29 $ 151 Collectively evaluated for impairment 418 51 233 702 Total allowance for loan losses $ 537 $ 54 $ 262 $ 853 Portion of loan portfolio ending balance: Individually evaluated for impairment $ 523 $ 22 $ 411 $ 956 Collectively evaluated for impairment 46,418 6,564 30,492 83,474 Total loans evaluated for impairment $ 46,941 $ 6,586 $ 30,903 $ 84,430 Three Months Ended March 31, 2018 Commercial Investor Real Estate Consumer Total (In millions) Allowance for loan losses, January 1, 2018 $ 591 $ 64 $ 279 $ 934 Provision (credit) for loan losses (24 ) (4 ) 18 (10 ) Loan losses: Charge-offs (30 ) (8 ) (74 ) (112 ) Recoveries 10 2 16 28 Net loan (losses) recoveries (20 ) (6 ) (58 ) (84 ) Allowance for loan losses, March 31, 2018 547 54 239 840 Reserve for unfunded credit commitments, January 1, 2018 49 4 — 53 Provision (credit) for unfunded credit losses (4 ) — — (4 ) Reserve for unfunded credit commitments, March 31, 2018 45 4 — 49 Allowance for credit losses, March 31, 2018 $ 592 $ 58 $ 239 $ 889 Portion of ending allowance for loan losses: Individually evaluated for impairment $ 150 $ 10 $ 29 $ 189 Collectively evaluated for impairment 397 44 210 651 Total allowance for loan losses $ 547 $ 54 $ 239 $ 840 Portion of loan portfolio ending balance: Individually evaluated for impairment $ 700 $ 96 $ 476 $ 1,272 Collectively evaluated for impairment 42,437 5,491 30,622 78,550 Total loans evaluated for impairment $ 43,137 $ 5,587 $ 31,098 $ 79,822
Financing Receivable Credit Quality Indicators	March 31, 2019 Pass Special Mention Substandard Accrual Non-accrual Total (In millions) Commercial and industrial $ 39,534 $ 668 $ 447 $ 336 $ 40,985 Commercial real estate mortgage—owner-occupied 5,159 197 99 67 5,522 Commercial real estate construction—owner-occupied 403 12 5 14 434 Total commercial $ 45,096 $ 877 $ 551 $ 417 $ 46,941 Commercial investor real estate mortgage $ 4,464 $ 168 $ 75 $ 8 $ 4,715 Commercial investor real estate construction 1,848 18 5 — 1,871 Total investor real estate $ 6,312 $ 186 $ 80 $ 8 $ 6,586 Accrual Non-accrual Total (In millions) Residential first mortgage $ 14,079 $ 34 $ 14,113 Home equity 8,950 64 9,014 Indirect—vehicles 2,759 — 2,759 Indirect—other consumer 2,547 — 2,547 Consumer credit card 1,274 — 1,274 Other consumer 1,196 — 1,196 Total consumer $ 30,805 $ 98 $ 30,903 $ 84,430 December 31, 2018 Pass Special Mention Substandard Accrual Non-accrual Total (In millions) Commercial and industrial $ 37,963 $ 666 $ 346 $ 307 $ 39,282 Commercial real estate mortgage—owner-occupied 5,193 208 81 67 5,549 Commercial real estate construction—owner-occupied 356 7 13 8 384 Total commercial $ 43,512 $ 881 $ 440 $ 382 $ 45,215 Commercial investor real estate mortgage $ 4,444 $ 52 $ 143 $ 11 $ 4,650 Commercial investor real estate construction 1,773 6 7 — 1,786 Total investor real estate $ 6,217 $ 58 $ 150 $ 11 $ 6,436 Accrual Non-accrual Total (In millions) Residential first mortgage $ 14,236 $ 40 $ 14,276 Home equity 9,194 63 9,257 Indirect—vehicles 3,053 — 3,053 Indirect—other consumer 2,349 — 2,349 Consumer credit card 1,345 — 1,345 Other consumer 1,221 — 1,221 Total consumer $ 31,398 $ 103 $ 31,501 $ 83,152
Past Due Financing Receivables	The following tables include an aging analysis of DPD for each portfolio segment and class as of March 31, 2019 and December 31, 2018 : March 31, 2019 Accrual Loans 30-59 DPD 60-89 DPD 90+ DPD Total 30+ DPD Total Accrual Non-accrual Total (In millions) Commercial and industrial $ 24 $ 11 $ 11 $ 46 $ 40,649 $ 336 $ 40,985 Commercial real estate mortgage—owner-occupied 10 2 1 13 5,455 67 5,522 Commercial real estate construction—owner-occupied — — — — 420 14 434 Total commercial 34 13 12 59 46,524 417 46,941 Commercial investor real estate mortgage 1 — — 1 4,707 8 4,715 Commercial investor real estate construction — 1 — 1 1,871 — 1,871 Total investor real estate 1 1 — 2 6,578 8 6,586 Residential first mortgage 77 43 142 262 14,079 34 14,113 Home equity 44 24 37 105 8,950 64 9,014 Indirect—vehicles 34 9 7 50 2,759 — 2,759 Indirect—other consumer 13 7 1 21 2,547 — 2,547 Consumer credit card 11 8 20 39 1,274 — 1,274 Other consumer 15 5 4 24 1,196 — 1,196 Total consumer 194 96 211 501 30,805 98 30,903 $ 229 $ 110 $ 223 $ 562 $ 83,907 $ 523 $ 84,430 December 31, 2018 Accrual Loans 30-59 DPD 60-89 DPD 90+ DPD Total 30+ DPD Total Accrual Non-accrual Total (In millions) Commercial and industrial $ 80 $ 22 $ 8 $ 110 $ 38,975 $ 307 $ 39,282 Commercial real estate mortgage—owner-occupied 12 7 — 19 5,482 67 5,549 Commercial real estate construction—owner-occupied — — — — 376 8 384 Total commercial 92 29 8 129 44,833 382 45,215 Commercial investor real estate mortgage 6 — — 6 4,639 11 4,650 Commercial investor real estate construction — — — — 1,786 — 1,786 Total investor real estate 6 — — 6 6,425 11 6,436 Residential first mortgage 85 53 150 288 14,236 40 14,276 Home equity 47 26 34 107 9,194 63 9,257 Indirect—vehicles 40 11 9 60 3,053 — 3,053 Indirect—other consumer 13 7 1 21 2,349 — 2,349 Consumer credit card 12 9 20 41 1,345 — 1,345 Other consumer 15 5 5 25 1,221 — 1,221 Total consumer 212 111 219 542 31,398 103 31,501 $ 310 $ 140 $ 227 $ 677 $ 82,656 $ 496 $ 83,152
Impaired Financing Receivables	The following tables present details related to the Company’s impaired loans as of March 31, 2019 and December 31, 2018 . Loans deemed to be impaired include all TDRs and all non-accrual commercial and investor real estate loans, excluding leases. Loans that have been fully charged-off do not appear in the tables below. Non-accrual Impaired Loans As of March 31, 2019 Book Value (3) Unpaid Principal Balance (1) Charge-offs and Payments Applied (2) Total Impaired Loans on Non-accrual Status Impaired Loans on Non-accrual Status with No Related Allowance Impaired Loans on Non-accrual Status with Related Allowance Related Allowance for Loan Losses Coverage % (4) (Dollars in millions) Commercial and industrial $ 426 $ 90 $ 336 $ 111 $ 225 $ 77 39.2 % Commercial real estate mortgage—owner-occupied 75 8 67 8 59 25 44.0 Commercial real estate construction—owner-occupied 16 2 14 1 13 3 31.3 Total commercial 517 100 417 120 297 105 39.7 Commercial investor real estate mortgage 8 — 8 — 8 2 25.0 Total investor real estate 8 — 8 — 8 2 25.0 Residential first mortgage 27 7 20 — 20 2 33.3 Home equity 11 1 10 — 10 — 9.1 Total consumer 38 8 30 — 30 2 26.3 $ 563 $ 108 $ 455 $ 120 $ 335 $ 109 38.5 % Accruing Impaired Loans As of March 31, 2019 Unpaid Principal Balance (1) Charge-offs and Payments Applied (2) Book Value (3) Related Allowance for Loan Losses Coverage % (4) (Dollars in millions) Commercial and industrial $ 84 $ — $ 84 $ 12 14.3 % Commercial real estate mortgage—owner-occupied 24 2 22 2 16.7 Total commercial 108 2 106 14 14.8 Commercial investor real estate mortgage 14 1 13 1 14.3 Commercial investor real estate construction 1 — 1 — — Total investor real estate 15 1 14 1 13.3 Residential first mortgage 199 9 190 20 14.6 Home equity 186 1 185 7 4.3 Consumer credit card 1 — 1 — — Other consumer 5 — 5 — — Total consumer 391 10 381 27 9.5 $ 514 $ 13 $ 501 $ 42 10.7 % Total Impaired Loans As of March 31, 2019 Book Value (3) Unpaid Principal Balance (1) Charge-offs and Payments Applied (2) Total Impaired Loans Impaired Loans with No Related Allowance Impaired Loans with Related Allowance Related Allowance for Loan Losses Coverage % (4) (Dollars in millions) Commercial and industrial $ 510 $ 90 $ 420 $ 111 $ 309 $ 89 35.1 % Commercial real estate mortgage—owner-occupied 99 10 89 8 81 27 37.4 Commercial real estate construction—owner-occupied 16 2 14 1 13 3 31.3 Total commercial 625 102 523 120 403 119 35.4 Commercial investor real estate mortgage 22 1 21 — 21 3 18.2 Commercial investor real estate construction 1 — 1 — 1 — — Total investor real estate 23 1 22 — 22 3 17.4 Residential first mortgage 226 16 210 — 210 22 16.8 Home equity 197 2 195 — 195 7 4.6 Consumer credit card 1 — 1 — 1 — — Other consumer 5 — 5 — 5 — — Total consumer 429 18 411 — 411 29 11.0 $ 1,077 $ 121 $ 956 $ 120 $ 836 $ 151 25.3 % Non-accrual Impaired Loans As of December 31, 2018 Book Value (3) Unpaid Principal Balance (1) Charge-offs and Payments Applied (2) Total Impaired Loans on Non-accrual Status Impaired Loans on Non-accrual Status with No Related Allowance Impaired Loans on Non-accrual Status with Related Allowance Related Allowance for Loan Losses Coverage % (4) (Dollars in millions) Commercial and industrial $ 384 $ 77 $ 307 $ 113 $ 194 $ 62 36.2 % Commercial real estate mortgage—owner-occupied 76 9 67 13 54 23 42.1 Commercial real estate construction—owner-occupied 9 1 8 — 8 3 44.4 Total commercial 469 87 382 126 256 88 37.3 Commercial investor real estate mortgage 11 — 11 4 7 1 9.1 Total investor real estate 11 — 11 4 7 1 9.1 Residential first mortgage 31 8 23 — 23 2 32.3 Home equity 11 2 9 — 9 — 18.2 Total consumer 42 10 32 — 32 2 28.6 $ 522 $ 97 $ 425 $ 130 $ 295 $ 91 36.0 % Accruing Impaired Loans As of December 31, 2018 Unpaid Principal Balance (1) Charge-offs and Payments Applied (2) Book Value (3) Related Allowance for Loan Losses Coverage % (4) (Dollars in millions) Commercial and industrial $ 84 $ — $ 84 $ 14 16.7 % Commercial real estate mortgage—owner-occupied 26 2 24 2 15.4 Total commercial 110 2 108 16 16.4 Commercial investor real estate mortgage 15 1 14 1 13.3 Total investor real estate 15 1 14 1 13.3 Residential first mortgage 194 9 185 18 13.9 Home equity 195 — 195 6 3.1 Consumer credit card 1 — 1 — — Other consumer 6 — 6 — — Total consumer 396 9 387 24 8.3 $ 521 $ 12 $ 509 $ 41 10.2 % Total Impaired Loans As of December 31, 2018 Book Value (3) Unpaid Principal Balance (1) Charge-offs and Payments Applied (2) Total Impaired Loans Impaired Loans with No Related Allowance Impaired Loans with Related Allowance Related Allowance for Loan Losses Coverage % (4) (Dollars in millions) Commercial and industrial $ 468 $ 77 $ 391 $ 113 $ 278 $ 76 32.7 % Commercial real estate mortgage—owner-occupied 102 11 91 13 78 25 35.3 Commercial real estate construction—owner-occupied 9 1 8 — 8 3 44.4 Total commercial 579 89 490 126 364 104 33.3 Commercial investor real estate mortgage 26 1 25 4 21 2 11.5 Total investor real estate 26 1 25 4 21 2 11.5 Residential first mortgage 225 17 208 — 208 20 16.4 Home equity 206 2 204 — 204 6 3.9 Consumer credit card 1 — 1 — 1 — — Other consumer 6 — 6 — 6 — — Total consumer 438 19 419 — 419 26 10.3 $ 1,043 $ 109 $ 934 $ 130 $ 804 $ 132 23.1 % ________ (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 months ended March 31, 2019 and 2018 . Interest income recognized represents interest on accruing loans modified in a TDR. Three Months Ended March 31 2019 2018 Average Balance Interest Income Recognized Average Balance Interest Income Recognized (In millions) Commercial and industrial $ 411 $ 1 $ 533 $ 3 Commercial real estate mortgage—owner-occupied 93 1 166 3 Commercial real estate construction—owner-occupied 13 — 6 — Total commercial 517 2 705 6 Commercial investor real estate mortgage 21 — 76 1 Commercial investor real estate construction — — 30 — Total investor real estate 21 — 106 1 Residential first mortgage 209 1 288 2 Home equity 198 3 252 3 Consumer credit card 1 — 1 — Other consumer 6 — 8 — Total consumer 414 4 549 5 Total impaired loans $ 952 $ 6 $ 1,360 $ 12
Troubled Debt Restructurings on Financing Receivables	The following tables present the end of period balance for loans modified in a TDR during the periods presented by portfolio segment and class, and the financial impact of those modifications. The tables include modifications made to new TDRs, as well as renewals of existing TDRs. Loans first reported as TDRs during the three months ended March 31, 2019 and 2018 totaled approximately $85 million and $171 million , respectively. Three Months Ended March 31, 2019 Financial Impact Number of Recorded Increase in (Dollars in millions) Commercial and industrial 26 $ 78 $ 1 Commercial real estate mortgage—owner-occupied 17 12 — Commercial real estate construction—owner-occupied 1 2 — Total commercial 44 92 1 Commercial investor real estate mortgage 3 11 — Commercial investor real estate construction 2 — — Total investor real estate 5 11 — Residential first mortgage 34 10 1 Home equity 34 3 — Consumer credit card 18 — — Indirect—vehicles and other consumer 30 — — Total consumer 116 13 1 165 $ 116 $ 2 Three Months Ended March 31, 2018 Financial Impact Number of Recorded Increase in (Dollars in millions) Commercial and industrial 29 $ 164 $ 2 Commercial real estate mortgage—owner-occupied 18 14 — Total commercial 47 178 2 Commercial investor real estate mortgage 10 19 1 Total investor real estate 10 19 1 Residential first mortgage 53 8 1 Home equity 17 1 — Consumer credit card 14 — — Indirect—vehicles and other consumer 13 — — Total consumer 97 9 1 154 $ 206 $ 4

Servicing of Financial Assets (

Servicing of Financial Assets (Tables)	3 Months Ended
	Mar. 31, 2019
Transfers and Servicing of Financial Assets [Abstract]
Schedule of Residential Mortgage Servicing Rights Under The Fair Value Measurement Method	The table below presents an analysis of residential MSRs under the fair value measurement method: Three Months Ended March 31 2019 2018 (In millions) Carrying value, beginning of period $ 418 $ 336 Additions 7 8 Increase (decrease) in fair value: Due to change in valuation inputs or assumptions (28 ) 22 Economic amortization associated with borrower repayments (1) (11 ) (10 ) Carrying value, end of period $ 386 $ 356 ________ (1) "Economic amortization associated with borrower repayments" includes both total loan payoffs as well as partial paydowns.
Data And Assumptions Used In The Fair Value Calculation As Well As The Valuation's Sensitivity To Rate Fluctuations Related To Residential Mortgage Servicing Rights	Data and assumptions used in the fair value calculation, as well as the valuation’s sensitivity to rate fluctuations, related to residential MSRs (excluding related derivative instruments) are as follows: March 31 2019 2018 (Dollars in millions) Unpaid principal balance $ 36,050 $ 31,641 Weighted-average CPR (%) 10.4 % 9.0 % Estimated impact on fair value of a 10% increase $ (21 ) $ (24 ) Estimated impact on fair value of a 20% increase $ (38 ) $ (43 ) Option-adjusted spread (basis points) 759 842 Estimated impact on fair value of a 10% increase $ (12 ) $ (12 ) Estimated impact on fair value of a 20% increase $ (23 ) $ (24 ) Weighted-average coupon interest rate 4.2 % 4.1 % Weighted-average remaining maturity (months) 279 280 Weighted-average servicing fee (basis points) 27.1 27.3
Schedule Of Fees Resulting From The Servicing Of Residential Mortgage Loans	The following table presents servicing related fees, which include contractually specified servicing fees, late fees and other ancillary income resulting from the servicing of residential mortgage loans: Three Months Ended March 31 2019 2018 (In millions) Servicing related fees and other ancillary income $ 26 $ 23

Leases (Tables)

Leases (Tables)	3 Months Ended
	Mar. 31, 2019
Leases [Abstract]
Lease expense and other information related to operating leases	Lease expense is comprised of the following: Three Months Ended March 31, 2019 (In millions) Operating lease cost $ 21 Other information related to operating leases is as follows: Three Months Ended March 31, 2019 Weighted-average remaining lease term (years) 9.2 Weighted-average discount rate (%) 3.3 %
Future, undiscounted minimum lease payments on operating leases	Future, undiscounted minimum lease payments on operating leases are as follows: March 31, 2019 (In millions) 2019 $ 70 2020 90 2021 80 2022 71 2023 63 Thereafter 248 Total lease payments $ 622 Less: Computed interest 111 Total present value of lease liabilities $ 511
Summary of sales-type, direct financing, operating, and leveraged leases	The following table presents a summary of Regions' sales-type, direct financing, operating, and leveraged leases: As of and For the Three Months Ended March 31, 2019 Sales-Type and Direct Financing Operating Leveraged Total (In millions) Net interest income and other financing income $ 8 $ 3 $ 3 $ 14 Lease receivable 1,046 152 185 1,383 Unearned income (245 ) (39 ) (125 ) (409 ) Guaranteed residual 42 — — 42 Unguaranteed residual 136 236 159 531 Total net investment $ 979 $ 349 $ 219 $ 1,547
Summary of sales-type, direct financing, operating, and leveraged leases	The following table presents a summary of Regions' sales-type, direct financing, operating, and leveraged leases: As of and For the Three Months Ended March 31, 2019 Sales-Type and Direct Financing Operating Leveraged Total (In millions) Net interest income and other financing income $ 8 $ 3 $ 3 $ 14 Lease receivable 1,046 152 185 1,383 Unearned income (245 ) (39 ) (125 ) (409 ) Guaranteed residual 42 — — 42 Unguaranteed residual 136 236 159 531 Total net investment $ 979 $ 349 $ 219 $ 1,547
Summary of sales-type, direct financing, operating, and leveraged leases	The following table presents a summary of Regions' sales-type, direct financing, operating, and leveraged leases: As of and For the Three Months Ended March 31, 2019 Sales-Type and Direct Financing Operating Leveraged Total (In millions) Net interest income and other financing income $ 8 $ 3 $ 3 $ 14 Lease receivable 1,046 152 185 1,383 Unearned income (245 ) (39 ) (125 ) (409 ) Guaranteed residual 42 — — 42 Unguaranteed residual 136 236 159 531 Total net investment $ 979 $ 349 $ 219 $ 1,547
Minimum future payments due from customers for sales-type, direct financing, and operating leases	The following table presents the minimum future payments due from customers for sales-type, direct financing, and operating leases: March 31, 2019 Sales-Type and Direct Financing Operating Total (In millions) 2019 $ 142 $ 40 $ 182 2020 149 43 192 2021 115 30 145 2022 94 17 111 2023 76 8 84 Thereafter 470 14 484 $ 1,046 $ 152 $ 1,198
Minimum future payments due from customers for sales-type, direct financing, and operating leases	The following table presents the minimum future payments due from customers for sales-type, direct financing, and operating leases: March 31, 2019 Sales-Type and Direct Financing Operating Total (In millions) 2019 $ 142 $ 40 $ 182 2020 149 43 192 2021 115 30 145 2022 94 17 111 2023 76 8 84 Thereafter 470 14 484 $ 1,046 $ 152 $ 1,198

Stockholders' Equity and Accu_2

Stockholders' Equity and Accumulated Other Comprehensive Income (Loss) (Tables)	3 Months Ended
	Mar. 31, 2019
Equity [Abstract]
Summary of the non-cumulative perpetual preferred stock	The following table presents a summary of the non-cumulative perpetual preferred stock: March 31, 2019 December 31, 2018 Issuance Date Earliest Redemption Date Dividend Rate Liquidation Amount Carrying Amount Carrying Amount (Dollars in millions) Series A 11/1/2012 12/15/2017 6.375 % $ 500 $ 387 $ 387 Series B 4/29/2014 9/15/2024 6.375 % (1) 500 433 433 $ 1,000 $ 820 $ 820 _________ (1) Dividends, if declared, will be paid quarterly at an annual rate equal to (i) for each period beginning prior to September 15, 2024, 6.375% , and (ii) for each period beginning on or after September 15, 2024, three-month LIBOR plus 3.536% .
Schedule of Accumulated Other Comprehensive Income (Loss)	Activity within the balances in accumulated other comprehensive income (loss), net is shown in the following tables: Three Months Ended March 31, 2019 Unrealized losses on securities transferred to held to maturity Unrealized gains (losses) on securities available for sale Unrealized gains (losses) on derivative instruments designated as cash flow hedges Defined benefit pension plans and other post employment benefits Accumulated other comprehensive (In millions) Beginning of period $ (27 ) $ (397 ) $ (63 ) $ (477 ) $ (964 ) Net change 1 245 113 7 366 End of period $ (26 ) $ (152 ) $ 50 $ (470 ) $ (598 ) Three Months Ended March 31, 2018 Unrealized losses on securities transferred to held to maturity Unrealized gains (losses) on securities available for sale Unrealized gains (losses) on derivative instruments designated as cash flow hedges Defined benefit pension plans and other post employment benefits Accumulated other comprehensive (In millions) Beginning of period $ (33 ) $ (153 ) $ (51 ) $ (512 ) $ (749 ) Net change 2 (310 ) (100 ) 6 (402 ) End of period $ (31 ) $ (463 ) $ (151 ) $ (506 ) $ (1,151 )
Reclassification From Accumulated Other Comprehensive Income (Loss)	The following table presents amounts reclassified out of accumulated other comprehensive income (loss) for the three months ended March 31, 2018 and 2019 : Three Months Ended March 31, 2019 Three Months Ended March 31, 2018 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: $ (1 ) $ (3 ) Net interest income and other financing income — 1 Tax (expense) or benefit $ (1 ) $ (2 ) Net of tax Unrealized gains and (losses) on available for sale securities: $ (7 ) $ — Securities gains (losses), net 2 — Tax (expense) or benefit $ (5 ) $ — Net of tax Gains and (losses) on cash flow hedges: Interest rate contracts $ (8 ) $ 11 Net interest income and other financing income 2 (3 ) Tax (expense) or benefit $ (6 ) $ 8 Net of tax Amortization of defined benefit pension plans and other post employment benefits: Actuarial gains (losses) (2) $ (9 ) $ (9 ) Total before tax 2 2 Tax (expense) or benefit $ (7 ) $ (7 ) Net of tax Total reclassifications for the period $ (19 ) $ (1 ) 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 other non-interest expense on the consolidated statements of income (See Note 8 for additional details).

Earnings (Loss) Per Common Sh_2

Earnings (Loss) Per Common Share (Tables)	3 Months Ended
	Mar. 31, 2019
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted	The following table sets forth the computation of basic earnings per common share and diluted earnings per common share: Three Months Ended March 31 2019 2018 (In millions, except per share amounts) Numerator: Income from continuing operations $ 394 $ 414 Preferred stock dividends (16 ) (16 ) Income from continuing operations available to common shareholders 378 398 Income from discontinued operations, net of tax — — Net income available to common shareholders $ 378 $ 398 Denominator: Weighted-average common shares outstanding—basic 1,019 1,127 Potential common shares 9 14 Weighted-average common shares outstanding—diluted 1,028 1,141 Earnings per common share from continuing operations available to common shareholders (1) : Basic $ 0.37 $ 0.35 Diluted 0.37 0.35 Earnings per common share from discontinued operations (1)(2)(3) : Basic $ 0.00 $ 0.00 Diluted 0.00 0.00 Earnings per common share (1) : Basic $ 0.37 $ 0.35 Diluted 0.37 0.35 _________ (1) Certain per share amounts may not appear to reconcile due to rounding. (2) On April 4, 2018, Regions entered into a stock purchase agreement to sell Regions Insurance Group, Inc to BB&T Insurance Holdings, Inc. The transaction closed on July 2, 2018. The transaction generated an after-tax gain of $196 million . On January 11, 2012, Regions entered into a stock purchase agreement to sell Morgan Keegan and Company and related affiliates to Raymond James Financial Inc. The sale closed on April 2, 2012. (3) In a period where there is a loss from discontinued operations, basic weighted-average common shares outstanding are used to determine both basic and diluted earnings per share.

Pension and Other Postretirem_2

Pension and Other Postretirement Benefits (Tables)	3 Months Ended
	Mar. 31, 2019
Defined Benefit Plan [Abstract]
Schedule of Net Periodic Pension Cost	Net periodic pension cost (credit) includes the following components: Qualified Plans Non-qualified Plans Total Three Months Ended March 31 2019 2018 2019 2018 2019 2018 (In millions) Service cost $ 8 $ 9 $ 1 $ 1 $ 9 $ 10 Interest cost 19 18 1 1 20 19 Expected return on plan assets (34 ) (37 ) — — (34 ) (37 ) Amortization of actuarial loss 8 8 1 1 9 9 Net periodic pension cost (credit) $ 1 $ (2 ) $ 3 $ 3 $ 4 $ 1

Derivative Financial Instrume_2

Derivative Financial Instruments and Hedging Activities (Tables)	3 Months Ended
	Mar. 31, 2019
Derivative Instruments and Hedging Activities Disclosure [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 March 31, 2019 and December 31, 2018 . March 31, 2019 December 31, 2018 Notional Amount Estimated Fair Value Notional Amount Estimated Fair Value Gain (1) Loss (1) Gain (1) Loss (1) (In millions) Derivatives in fair value hedging relationships: Interest rate swaps $ 3,731 $ 3,231 Derivatives in cash flow hedging relationships: Interest rate swaps 9,750 8,750 Interest rate floors (2) 4,750 $ 106 3,250 $ 72 Total derivatives designated as hedging instruments $ 18,231 $ 106 $ 15,231 $ 72 Derivatives not designated as hedging instruments: Interest rate swaps $ 52,521 $ 261 $ 200 $ 49,737 $ 193 $ 237 Interest rate options 7,370 25 13 7,178 29 20 Interest rate futures and forward commitments 4,182 4 8 7,961 4 9 Other contracts 7,027 31 36 7,287 72 74 Total derivatives not designated as hedging instruments $ 71,100 $ 321 $ 257 $ 72,163 $ 298 $ 340 Total derivatives $ 89,331 $ 427 $ 257 $ 87,394 $ 370 $ 340 Total gross derivative instruments, before netting $ 427 $ 257 $ 370 $ 340 Less: Legally enforceable master netting agreements 90 90 108 108 Less: Cash collateral received/posted 131 79 135 71 Total gross derivative instruments, after netting (3) $ 206 $ 88 $ 127 $ 161 _________ (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. There is no fair value presented for contracts that are characterized as settled daily. (2) Estimated fair value includes premium and change in fair value of the interest rate floors. (3) As of both March 31, 2019 and December 31, 2018 , financial instruments posted of $24 million were not offset in the consolidated balance sheets.
Schedule Of Effect Of Hedging Derivative Instruments On Statements Of Operations	The following tables present the effect of hedging derivative instruments on the consolidated statements of income and the total amounts for the respective line items effected: Three Months Ended March 31, 2019 Interest Income Interest Expense Non-interest expense Debt securities-taxable Loans, including fees Deposits Long-term borrowings Other (In millions) Total amounts presented in the consolidated statements of income $ 165 $ 981 $ 108 $ 102 $ 224 Gains/(losses) on fair value hedging relationships: Interest rate contracts: Amounts related to interest settlements on derivatives $ — $ — $ — $ (6 ) $ — Recognized on derivatives (1 ) — — 33 — Recognized on hedged items 1 — — (33 ) — Net income (expense) recognized on fair value hedges $ — $ — $ — $ (6 ) $ — Gains/(losses) on cash flow hedging relationships: (1) Interest rate contracts: Realized gains (losses) reclassified from AOCI into net income (2) $ — $ (8 ) $ — $ — $ — Net income (expense) recognized on cash flow hedges $ — $ (8 ) $ — $ — $ — Three Months Ended March 31, 2018 Interest Income Interest Expense Non-interest expense Securities-taxable Loans, including fees Deposits Long-term borrowings Other (In millions) Total amounts presented in the consolidated statements of income $ 154 $ 851 $ 49 $ 72 $ 225 Gains/(losses) on fair value hedging relationships: Interest rate contracts: Amounts related to interest settlements on derivatives $ — $ — $ — $ (1 ) $ — Recognized on derivatives 3 — — (32 ) — Recognized on hedged items (3 ) — — 32 — Net income (expense) recognized on fair value hedges $ — $ — $ — $ (1 ) $ — Gains/(losses) on cash flow hedging relationships: (1) Interest rate contracts: Realized gains (losses) reclassified from AOCI into net income (2) $ — $ 11 $ — $ — $ — Net income (expense) recognized on cash flow hedges $ — $ 11 $ — $ — $ — _____ (1) See Note 6 for gain or (loss) recognized for cash flow hedges in AOCI. (2) Pre-tax
Schedule of Fair Value Hedging Basis Adjustments	The following table presents the carrying amount and associated cumulative basis adjustment related to the application of hedge accounting that is included in the carrying amount of hedged assets and liabilities in fair value hedging relationships. March 31, 2019 Hedged Items Currently Designated Hedged Items No Longer Designated Carrying Amount of Assets/(Liabilities) Hedge Accounting Basis Adjustment Carrying Amount of Assets/(Liabilities) Hedge Accounting Basis Adjustment (In millions) Debt securities available for sale $ 86 $ 1 $ 653 $ 4 Long-term borrowings (3,652 ) 16 — — December 31, 2018 Hedged Items Currently Designated Hedged Items No Longer Designated Carrying Amount of Assets/(Liabilities) Hedge Accounting Basis Adjustment Carrying Amount of Assets/(Liabilities) Hedge Accounting Basis Adjustment (In millions) Debt securities available for sale $ 85 $ — $ 604 $ 4 Long-term borrowings (3,103 ) 50 — —
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 months ended March 31, 2019 and 2018 : Three Months Ended March 31 Derivatives Not Designated as Hedging Instruments 2019 2018 (In millions) Capital markets income: Interest rate swaps $ 1 $ 7 Interest rate options 2 7 Interest rate futures and forward commitments 2 1 Other contracts — 2 Total capital markets income 5 17 Mortgage income: Interest rate swaps 20 (18 ) Interest rate options 3 3 Interest rate futures and forward commitments 2 (3 ) Total mortgage income 25 (18 ) $ 30 $ (1 )

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2019
Fair Value Disclosures [Abstract]
Schedule Of Assets And Liabilities At Fair Value Measured On A Recurring Basis And Non-Recurring Basis	The following table presents assets and liabilities measured at estimated fair value on a recurring basis and non-recurring basis as of March 31, 2019 and December 31, 2018 : March 31, 2019 December 31, 2018 Level 1 Level 2 Level 3 (1) Total Estimated Fair Value Level 1 Level 2 Level 3 (1) Total Estimated Fair Value (In millions) Recurring fair value measurements Debt securities available for sale: U.S. Treasury securities $ 174 $ — $ — $ 174 $ 280 $ — $ — $ 280 Federal agency securities — 45 — 45 — 43 — 43 Mortgage-backed securities (MBS): Residential agency — 17,441 — 17,441 — 16,624 — 16,624 Residential non-agency — — 2 2 — — 2 2 Commercial agency — 4,177 — 4,177 — 3,835 — 3,835 Commercial non-agency — 730 — 730 — 760 — 760 Corporate and other debt securities — 1,211 6 1,217 — 1,182 3 1,185 Total debt securities available for sale $ 174 $ 23,604 $ 8 $ 23,786 $ 280 $ 22,444 $ 5 $ 22,729 Loans held for sale $ — $ 284 $ — $ 284 $ — $ 251 $ — $ 251 Marketable equity securities $ 348 $ — $ — $ 348 $ 429 $ — $ — $ 429 Residential mortgage servicing rights $ — $ — $ 386 $ 386 $ — $ — $ 418 $ 418 Derivative assets: Interest rate swaps $ — $ 261 $ — $ 261 $ — $ 193 $ — $ 193 Interest rate options — 123 8 131 — 96 5 101 Interest rate futures and forward commitments — 4 — 4 — 4 — 4 Other contracts 1 30 — 31 2 70 — 72 Total derivative assets $ 1 $ 418 $ 8 $ 427 $ 2 $ 363 $ 5 $ 370 Derivative liabilities: Interest rate swaps $ — $ 200 $ — $ 200 $ — $ 237 $ — $ 237 Interest rate options — 13 — 13 — 20 — 20 Interest rate futures and forward commitments — 8 — 8 — 9 — 9 Other contracts 1 31 4 36 2 69 3 74 Total derivative liabilities $ 1 $ 252 $ 4 $ 257 $ 2 $ 335 $ 3 $ 340 Non-recurring fair value measurements Loans held for sale $ — $ — $ 14 $ 14 $ — $ — $ 10 $ 10 Foreclosed property and other real estate — 19 7 26 — 16 3 19 _________ (1) All following disclosures related to Level 3 recurring and non-recurring assets do not include those deemed to be immaterial.
Rollforward For Assets And Liabilities Measured At Fair Value On A Recurring Basis With Level 3 Significant Unobservable Inputs	The following tables illustrate rollforwards for all material assets and liabilities measured at fair value on a recurring basis using significant unobservable inputs (Level 3) for the three months ended March 31, 2019 and 2018 , respectively. The net changes in realized gains (losses) included in earnings related to Level 3 assets and liabilities held at March 31, 2019 and 2018 are not material. Three Months Ended March 31, 2019 Opening Total Realized / Unrealized Gains or Losses Purchases Sales Issuances Settlements Transfers Transfers Closing Included in Earnings Included in Other Compre- hensive Income (Loss) (In millions) Level 3 Instruments Only Residential mortgage servicing rights $ 418 (39 ) (1) 7 — — — — — — $ 386 Three Months Ended March 31, 2018 Opening Total Realized / Purchases Sales Issuances Settlements Transfers Transfers Closing Included Included (In millions) Level 3 Instruments Only Residential mortgage servicing rights $ 336 12 (1) — 8 — — — — — $ 356 _________ (1) Included in mortgage income.
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 March 31 2019 2018 (In millions) Loans held for sale $ (2 ) $ (3 ) Foreclosed property and other real estate (8 ) (5 )
Summary Of Quantitative Information About Level 3 Measurements	The following tables present detailed information regarding material assets and liabilities measured at fair value using significant unobservable inputs (Level 3) as of March 31, 2019 , and December 31, 2018 . 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 March 31, 2019 , and December 31, 2018 , are included. Following the tables are descriptions of the valuation techniques and the sensitivity of the techniques to changes in the significant unobservable inputs. March 31, 2019 Level 3 Valuation Technique Unobservable Input(s) Quantitative Range of Unobservable Inputs and (Weighted-Average) (Dollars in millions) Recurring fair value measurements: Residential mortgage servicing rights (1) $386 Discounted cash flow Weighted-average CPR (%) 4.6% - 45.5% (10.4%) OAS (%) 5.7% - 15.0% (7.6%) _________ (1) See Note 4 for additional disclosures related to assumptions used in the fair value calculation for residential mortgage servicing rights. December 31, 2018 Level 3 Valuation Technique Unobservable Input(s) Quantitative Range of Unobservable Inputs and (Weighted-Average) (Dollars in millions) Recurring fair value measurements: Residential mortgage servicing rights (1) $418 Discounted cash flow Weighted-average CPR (%) 4.4% - 42.6% (9.0%) OAS (%) 5.7% - 15.0% (7.6%) _________ (1) See Note 7 to the consolidated financial statements of the Annual Report on Form 10-K for the year ended December 31, 2018 for additional disclosures related to assumptions used in the fair value calculation for residential mortgage servicing rights.
Fair Value Option, Fair Value and Unpaid Principal Balance	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: March 31, 2019 December 31, 2018 Aggregate Fair Value Aggregate Unpaid Principal Aggregate Fair Value Less Aggregate Unpaid Principal Aggregate Fair Value Aggregate Unpaid Principal Aggregate Fair Value Less Aggregate Unpaid Principal (In millions) Mortgage loans held for sale, at fair value $ 284 $ 274 $ 10 $ 251 $ 242 $ 9 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 and losses resulting from changes in fair value of these loans, which were recorded in mortgage income in the consolidated statements of income during the three months ended March 31, 2019 and 2018 . 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. Net gains (losses) resulting from changes in fair value Three Months Ended March 31 2019 2018 (In millions) Mortgage loans held for sale, at fair value $ — $ (3 )
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 March 31, 2019 are as follows: March 31, 2019 Carrying Amount Estimated Fair Value (1) Level 1 Level 2 Level 3 (In millions) Financial assets: Cash and cash equivalents $ 3,807 $ 3,807 $ 3,807 $ — $ — Debt securities held to maturity 1,451 1,454 — 1,454 — Debt securities available for sale 23,786 23,786 174 23,604 8 Loans held for sale 318 318 — 302 16 Loans (excluding leases), net of unearned income and allowance for loan losses (2)(3) 82,379 81,608 — — 81,608 Other earning assets (4) 1,268 1,268 348 920 — Derivative assets 427 427 1 418 8 Financial liabilities: Derivative liabilities 257 257 1 252 4 Deposits 95,720 95,772 — 95,772 — Short-term borrowings 1,600 1,600 — 1,600 — Long-term borrowings 12,957 13,328 — 12,400 928 Loan commitments and letters of credit 73 488 — — 488 _________ (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 estimated changes in interest rates, market liquidity and credit spreads in the periods they are deemed to have occurred. (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 on the loan portfolio's net carrying amount at March 31, 2019 was $771 million or 0.9 percent. (3) Excluded from this table is the capital lease carrying amount of $1.2 billion at March 31, 2019 . (4) Excluded from this table is the operating lease carrying amount of $349 million at March 31, 2019 . 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, 2018 are as follows: December 31, 2018 Carrying Amount Estimated Fair Value (1) Level 1 Level 2 Level 3 (In millions) Financial assets: Cash and cash equivalents $ 3,538 $ 3,538 $ 3,538 $ — $ — Debt securities held to maturity 1,482 1,460 — 1,460 — Debt securities available for sale 22,729 22,729 280 22,444 5 Loans held for sale 304 304 — 287 17 Loans (excluding leases), net of unearned income and allowance for loan losses (2)(3) 81,054 79,386 — — 79,386 Other earning assets (4) 1,350 1,350 429 921 — Derivative assets 370 370 2 363 5 Financial liabilities: Derivative liabilities 340 340 2 335 3 Deposits 94,491 94,531 — 94,531 — Short-term borrowings 1,600 1,600 — 1,600 — Long-term borrowings 12,424 12,610 — 12,408 202 Loan commitments and letters of credit 79 435 — — 435 _________ (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 estimated changes in interest rates, market liquidity and credit spreads in the periods they are deemed to have occurred. (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 on the loan portfolio's net carrying amount at December 31, 2018 was $1.7 billion or 2.1 percent. (3) Excluded from this table is the capital lease carrying amount of $1.1 billion at December 31, 2018 . (4) Excluded from this table is the operating lease carrying amount of $369 million at December 31, 2018 .

Business Segment Information (T

Business Segment Information (Tables)	3 Months Ended
	Mar. 31, 2019
Segment Reporting [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 March 31, 2019 Corporate Bank Consumer Bank Wealth Management Other Continuing Operations Discontinued Operations Consolidated (In millions) Net interest income and other financing income (loss) $ 358 $ 576 $ 47 $ (33 ) $ 948 $ — $ 948 Provision (credit) for loan losses 43 83 4 (39 ) 91 — 91 Non-interest income 131 281 78 12 502 — 502 Non-interest expense 232 514 88 26 860 — 860 Income (loss) before income taxes 214 260 33 (8 ) 499 — 499 Income tax expense (benefit) 53 65 8 (21 ) 105 — 105 Net income (loss) $ 161 $ 195 $ 25 $ 13 $ 394 $ — $ 394 Average assets $ 53,851 $ 35,401 $ 2,203 $ 34,088 $ 125,543 $ — $ 125,543 Three Months Ended March 31, 2018 Corporate Bank Consumer Bank Wealth Management Other Continuing Operations Discontinued Operations Consolidated (In millions) Net interest income and other financing income (loss) $ 337 $ 531 $ 49 $ (8 ) $ 909 $ — $ 909 Provision (credit) for loan losses 46 77 4 (137 ) (10 ) — (10 ) Non-interest income 144 277 77 9 507 34 541 Non-interest expense 229 517 90 48 884 34 918 Income (loss) before income taxes 206 214 32 90 542 — 542 Income tax expense (benefit) 52 54 8 14 128 — 128 Net income (loss) $ 154 $ 160 $ 24 $ 76 $ 414 $ — $ 414 Average assets $ 51,037 $ 34,951 $ 2,359 $ 34,977 $ 123,324 $ 170 $ 123,494

Commitments, Contingencies an_2

Commitments, Contingencies and Guarantees (Tables)	3 Months Ended
	Mar. 31, 2019
Commitments and Contingencies Disclosure [Abstract]
Credit Risk Of Off-Balance Sheet Financial Instruments By Contractual Amounts	Credit risk associated with these instruments is represented by the contractual amounts indicated in the following table: March 31, 2019 December 31, 2018 (In millions) Unused commitments to extend credit $ 51,608 $ 51,406 Standby letters of credit 1,396 1,428 Commercial letters of credit 124 44 Liabilities associated with standby letters of credit 24 28 Assets associated with standby letters of credit 25 29 Reserve for unfunded credit commitments 50 51

Revenue Recognition (Tables)

Revenue Recognition (Tables)	3 Months Ended
	Mar. 31, 2019
Revenue Recognition [Abstract]
Disaggregation of Revenue	The following tables present total non-interest income disaggregated by major product category for each reportable segment for the period indicated. Three Months Ended March 31, 2019 Corporate Bank Consumer Wealth Other Segment Revenue Other (1) Continuing Discontinued (In millions) Service charges on deposit accounts $ 39 $ 133 $ — $ 1 $ 2 $ 175 $ — Card and ATM fees 13 99 — 1 (4 ) 109 — Investment management and trust fee income — — 57 — — 57 — Capital markets income 21 — — — 21 42 — Mortgage income — — — — 27 27 — Investment services fee income — — 19 — — 19 — Commercial credit fee income — — — — 18 18 — Bank-owned life insurance — — — — 23 23 — Securities gains (losses), net — — — — (7 ) (7 ) — Market value adjustments on employee benefit assets - defined benefit — — — — 5 5 — Market value adjustments on employee benefit assets - other — — — — (1 ) (1 ) — Other miscellaneous income 6 20 2 (6 ) 13 35 — $ 79 $ 252 $ 78 $ (4 ) $ 97 $ 502 $ — Three Months Ended March 31, 2018 Corporate Bank Consumer Wealth Other Segment Revenue Other (1) Continuing Discontinued (In millions) Service charges on deposit accounts $ 37 $ 131 $ 1 $ 1 $ 1 $ 171 $ — Card and ATM fees 12 96 — — (4 ) 104 — Investment management and trust fee income — — 58 — — 58 — Capital markets income 18 — — — 32 50 — Mortgage income — — — — 38 38 — Investment services fee income — — 17 — — 17 — Commercial credit fee income — — — — 17 17 — Bank-owned life insurance — — — — 17 17 — Securities gains (losses), net — — — — — — — Market value adjustments on employee benefit assets - defined benefit — — — — (1 ) (1 ) — Market value adjustments on employee benefit assets - other — — — — — — — Insurance commissions and fees — — — — — — 34 Other miscellaneous income 5 9 1 — 21 36 — $ 72 $ 236 $ 77 $ 1 $ 121 $ 507 $ 34 ________ (1) This revenue is not impacted by the accounting guidance related to revenue from contracts with customers and continues to be recognized when earned in accordance with the Company's existing revenue recognition policy.

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 ($) $ in Millions		Mar. 31, 2019	Dec. 31, 2018
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities held to maturity, amortized cost		$ 1,485	$ 1,517
Held To Maturity Debt Securities Gross Unrealized Gains	[1]	0	0
Held To Maturity Debt Securities Gross Unrealized Losses	[1]	(34)	(35)
Debt Securities held to maturity		1,451	1,482
Held-to-maturity Debt Securities, Accumulated Unrecognized Holding Gain		11	1
Held-to-maturity Debt Securities, Accumulated Unrecognized Holding Loss		(8)	(23)
Debt Securities held to maturity, estimated fair value		1,454	1,460
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Amortized Cost		23,991	23,258
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax		92	38
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax		(297)	(567)
Available-for-sale debt securities, net carrying value		23,786	22,729
Debt securities available for sale		23,786	22,729
US Treasury Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Amortized Cost		175	284
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax		1	0
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax		(2)	(4)
Available-for-sale debt securities, net carrying value		174	280
Debt securities available for sale		174	280
Federal Agency Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Amortized Cost		45	43
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax		0	0
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax		0	0
Available-for-sale debt securities, net carrying value		45	43
Debt securities available for sale		45	43
Residential Agency [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities held to maturity, amortized cost		853	883
Held To Maturity Debt Securities Gross Unrealized Gains	[1]	0	0
Held To Maturity Debt Securities Gross Unrealized Losses	[1]	(31)	(32)
Debt Securities held to maturity		822	851
Held-to-maturity Debt Securities, Accumulated Unrecognized Holding Gain		7	1
Held-to-maturity Debt Securities, Accumulated Unrecognized Holding Loss		(3)	(10)
Debt Securities held to maturity, estimated fair value		826	842
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Amortized Cost		17,639	17,064
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax		59	26
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax		(257)	(466)
Available-for-sale debt securities, net carrying value		17,441	16,624
Debt securities available for sale		17,441	16,624
Residential Non-Agency [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Amortized Cost		2	2
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax		0	0
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax		0	0
Available-for-sale debt securities, net carrying value		2	2
Debt securities available for sale		2	2
Commercial Agency [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities held to maturity, amortized cost		632	634
Held To Maturity Debt Securities Gross Unrealized Gains	[1]	0	0
Held To Maturity Debt Securities Gross Unrealized Losses	[1]	(3)	(3)
Debt Securities held to maturity		629	631
Held-to-maturity Debt Securities, Accumulated Unrecognized Holding Gain		4	0
Held-to-maturity Debt Securities, Accumulated Unrecognized Holding Loss		(5)	(13)
Debt Securities held to maturity, estimated fair value		628	618
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Amortized Cost		4,188	3,891
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax		17	8
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax		(28)	(64)
Available-for-sale debt securities, net carrying value		4,177	3,835
Debt securities available for sale		4,177	3,835
Commercial Non-Agency [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Amortized Cost		731	768
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax		3	2
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax		(4)	(10)
Available-for-sale debt securities, net carrying value		730	760
Debt securities available for sale		730	760
Corporate and other debt securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Amortized Cost		1,211	1,206
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax		12	2
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax		(6)	(23)
Available-for-sale debt securities, net carrying value		1,217	1,185
Debt securities available for sale		$ 1,217	$ 1,185
[1]	The gross unrealized losses recognized in OCI on securities held to maturity resulted from a transfer of securities available for sale to held to maturity in the second quarter of 2013.

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 ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Debt Securities held to maturity, amortized cost	$ 1,485	$ 1,517
Debt Securities held to maturity, estimated fair value	1,454	1,460
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, within One Year, Amortized Cost	71
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, within One Year, Fair Value	71
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Amortized Cost	956
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Fair Value	958
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Amortized Cost	350
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Fair Value	352
Debt Securities, Available-for-sale, Allocated and Single Maturity Date, Maturity, after 10 Years, Amortized Cost	54
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after 10 Years, Fair Value	55
Debt Securities, Available-for-sale, Amortized Cost	23,991	23,258
Debt securities available for sale	23,786	22,729
Residential Agency [Member]
Debt Securities held to maturity, amortized cost	853	883
Debt Securities held to maturity, estimated fair value	826	842
Debt Securities, Available-for-sale, Amortized Cost	17,639	17,064
Debt securities available for sale	17,441	16,624
Residential Non-Agency [Member]
Debt Securities, Available-for-sale, Amortized Cost	2	2
Debt securities available for sale	2	2
Commercial Agency [Member]
Debt Securities held to maturity, amortized cost	632	634
Debt Securities held to maturity, estimated fair value	628	618
Debt Securities, Available-for-sale, Amortized Cost	4,188	3,891
Debt securities available for sale	4,177	3,835
Commercial Non-Agency [Member]
Debt Securities, Available-for-sale, Amortized Cost	731	768
Debt securities available for sale	$ 730	$ 760

Securities (Schedule Of Gross U

Securities (Schedule Of Gross Unrealized Losses And Estimated Fair Value Of Securities Available For Sale and Held to Maturity) (Details) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Unrealized Loss And Fair Value On Securities [Line Items]
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Estimated Fair Value	$ 0	$ 486
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	0	(7)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Estimated Fair Value	986	974
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(35)	(51)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Estimated Fair Value	986	1,460
Debt Securities, Held-to-maturity, Unrealized Loss Position, Accumulated Loss	(35)	(58)
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Estimated Fair Value	1,423	4,791
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(11)	(62)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Estimated Fair Value	15,711	14,239
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(286)	(505)
Available-for-sale Securities, Continuous Unrealized Loss Position, Estimated Fair Value	17,134	19,030
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	(297)	(567)
US Treasury Securities [Member]
Unrealized Loss And Fair Value On Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Estimated Fair Value	0	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	0	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Estimated Fair Value	149	261
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(2)	(4)
Available-for-sale Securities, Continuous Unrealized Loss Position, Estimated Fair Value	149	261
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	(2)	(4)
Residential Agency [Member]
Unrealized Loss And Fair Value On Securities [Line Items]
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Estimated Fair Value	0	0
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	0	0
Held-to-maturity Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Estimated Fair Value	826	842
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(27)	(42)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Estimated Fair Value	826	842
Debt Securities, Held-to-maturity, Unrealized Loss Position, Accumulated Loss	(27)	(42)
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Estimated Fair Value	1,366	2,830
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(10)	(37)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Estimated Fair Value	11,801	11,010
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(247)	(429)
Available-for-sale Securities, Continuous Unrealized Loss Position, Estimated Fair Value	13,167	13,840
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	(257)	(466)
Commercial Agency [Member]
Unrealized Loss And Fair Value On Securities [Line Items]
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Estimated Fair Value	0	486
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	0	(7)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Estimated Fair Value	160	132
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(8)	(9)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Estimated Fair Value	160	618
Debt Securities, Held-to-maturity, Unrealized Loss Position, Accumulated Loss	(8)	(16)
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Estimated Fair Value	0	1,073
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	0	(13)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Estimated Fair Value	2,937	2,254
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(28)	(51)
Available-for-sale Securities, Continuous Unrealized Loss Position, Estimated Fair Value	2,937	3,327
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	(28)	(64)
Commercial Non-Agency [Member]
Unrealized Loss And Fair Value On Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Estimated Fair Value	0	229
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	0	(1)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Estimated Fair Value	444	404
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(4)	(9)
Available-for-sale Securities, Continuous Unrealized Loss Position, Estimated Fair Value	444	633
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	(4)	(10)
All Other Securities [Member]
Unrealized Loss And Fair Value On Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Estimated Fair Value	57	659
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(1)	(11)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Estimated Fair Value	380	310
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(5)	(12)
Available-for-sale Securities, Continuous Unrealized Loss Position, Estimated Fair Value	437	969
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	$ (6)	$ (23)

Securities (Schedule Of Gross R

Securities (Schedule Of Gross Realized Gains And Gross Realized Losses On Available For Sale Securities) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Investments, Debt and Equity Securities [Abstract]
Gross realized gains	$ 0	$ 0
Gross realized losses	(6)	0
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net	(1)	0
Available-for-sale Securities, Gross Realized Gain (Loss)	$ (7)	$ 0

Securities (Narrative) (Details

Securities (Narrative) (Details) $ in Millions	Mar. 31, 2019USD ($)security	Dec. 31, 2018USD ($)security
Debt Securities, Available-for-sale [Line Items]
Pledged Assets Separately Reported, Securities Pledged as Collateral, at Fair Value	$ 8,300	$ 7,900
Number of individual positions in unrealized loss position | security	1,172	1,379
US Treasury Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Pledged Assets Separately Reported, Securities Pledged as Collateral, at Fair Value	$ 24	$ 24

Loans and the Allowance for C_3

Loans and the Allowance for Credit Losses (Schedule Of Loan Portfolio, Net Of Unearned Income) (Details) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018	Mar. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	$ 84,430	$ 83,152	$ 79,822
Commercial And Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	40,985	39,282
Commercial Real Estate Mortgage - Owner-Occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	5,522	5,549
Commercial Real Estate Construction - Owner-Occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	434	384
Commercial Investor Real Estate Mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	4,715	4,650
Commercial Investor Real Estate Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	1,871	1,786
Residential First Mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	14,113	14,276
Home Equity [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	9,014	9,257
Indirect-vehicles [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	2,759	3,053
Indirect-other consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	2,547	2,349
Consumer Credit Card Financing Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	1,274	1,345
Other consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	1,196	1,221
Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	46,941	45,215	43,137
Total Investor Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	6,586	6,436	5,587
Consumer Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	$ 30,903	$ 31,501	$ 31,098

Loans and the Allowance for C_4

Loans and the Allowance for Credit Losses (Analysis of the Allowance for Credit Losses by Portfolio Segment) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Allowance for Loan and Lease Losses [Roll Forward]
Allowance for loan losses, beginning of period	$ 840	$ 934
Provision (credit) for loan and lease losses	91	(10)
Loan losses:
Charge-offs	(102)	(112)
Recoveries	24	28
Net loan losses	(78)	(84)
Total allowance for loan losses	853	840
Reserve For Unfunded Credit Commitments [Roll Forward]
Reserve For Unfunded Credit Commitments, beginning of period	51	53
Provision (credit) for unfunded credit losses	(1)	(4)
Reserve For Unfunded Credit Commitments, end of period	50	49
Allowance for Credit Losses, end of period	903	889
Portion of ending allowance for loan losses:
Allowance Individually Evaluated for Impairment	151	189
Allowance Collectively Evaluated for Impairment	702	651
Total allowance for loan losses	853	840
Portion of loan portfolio ending balance:
Loans Individually Evaluated for Impairment	956	1,272
Loans Collectively Evaluated for Impairment	83,474	78,550
Loans, net of unearned income	84,430	79,822	$ 83,152
Commercial Portfolio Segment [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Allowance for loan losses, beginning of period	520	591
Provision (credit) for loan and lease losses	38	(24)
Loan losses:
Charge-offs	(30)	(30)
Recoveries	9	10
Net loan losses	(21)	(20)
Total allowance for loan losses	537	547
Reserve For Unfunded Credit Commitments [Roll Forward]
Reserve For Unfunded Credit Commitments, beginning of period	47	49
Provision (credit) for unfunded credit losses	(1)	(4)
Reserve For Unfunded Credit Commitments, end of period	46	45
Allowance for Credit Losses, end of period	583	592
Portion of ending allowance for loan losses:
Allowance Individually Evaluated for Impairment	119	150
Allowance Collectively Evaluated for Impairment	418	397
Total allowance for loan losses	537	547
Portion of loan portfolio ending balance:
Loans Individually Evaluated for Impairment	523	700
Loans Collectively Evaluated for Impairment	46,418	42,437
Loans, net of unearned income	46,941	43,137	45,215
Total Investor Real Estate [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Allowance for loan losses, beginning of period	58	64
Provision (credit) for loan and lease losses	(5)	(4)
Loan losses:
Charge-offs	0	(8)
Recoveries	1	2
Net loan losses	1	(6)
Total allowance for loan losses	54	54
Reserve For Unfunded Credit Commitments [Roll Forward]
Reserve For Unfunded Credit Commitments, beginning of period	4	4
Provision (credit) for unfunded credit losses	0	0
Reserve For Unfunded Credit Commitments, end of period	4	4
Allowance for Credit Losses, end of period	58	58
Portion of ending allowance for loan losses:
Allowance Individually Evaluated for Impairment	3	10
Allowance Collectively Evaluated for Impairment	51	44
Total allowance for loan losses	54	54
Portion of loan portfolio ending balance:
Loans Individually Evaluated for Impairment	22	96
Loans Collectively Evaluated for Impairment	6,564	5,491
Loans, net of unearned income	6,586	5,587	6,436
Consumer Portfolio Segment [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Allowance for loan losses, beginning of period	262	279
Provision (credit) for loan and lease losses	58	18
Loan losses:
Charge-offs	(72)	(74)
Recoveries	14	16
Net loan losses	(58)	(58)
Total allowance for loan losses	262	239
Reserve For Unfunded Credit Commitments [Roll Forward]
Reserve For Unfunded Credit Commitments, beginning of period	0	0
Provision (credit) for unfunded credit losses	0	0
Reserve For Unfunded Credit Commitments, end of period	0	0
Allowance for Credit Losses, end of period	262	239
Portion of ending allowance for loan losses:
Allowance Individually Evaluated for Impairment	29	29
Allowance Collectively Evaluated for Impairment	233	210
Total allowance for loan losses	262	239
Portion of loan portfolio ending balance:
Loans Individually Evaluated for Impairment	411	476
Loans Collectively Evaluated for Impairment	30,492	30,622
Loans, net of unearned income	$ 30,903	$ 31,098	$ 31,501

Loans and the Allowance for C_5

Loans and the Allowance for Credit Losses (Credit Quality Indicators) (Details) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018	Mar. 31, 2018
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned income	$ 84,430	$ 83,152	$ 79,822
Commercial And Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned income	40,985	39,282
Commercial Real Estate Mortgage - Owner-Occupied [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned income	5,522	5,549
Commercial Real Estate Construction - Owner-Occupied [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned income	434	384
Commercial Investor Real Estate Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned income	4,715	4,650
Commercial Investor Real Estate Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned income	1,871	1,786
Residential First Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned income	14,113	14,276
Home Equity [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned income	9,014	9,257
Indirect-vehicles [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned income	2,759	3,053
Indirect-other consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned income	2,547	2,349
Consumer Credit Card Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned income	1,274	1,345
Other consumer
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned income	1,196	1,221
Pass [Member] | Commercial And Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned income	39,534	37,963
Pass [Member] | Commercial Real Estate Mortgage - Owner-Occupied [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned income	5,159	5,193
Pass [Member] | Commercial Real Estate Construction - Owner-Occupied [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned income	403	356
Pass [Member] | Commercial Investor Real Estate Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned income	4,464	4,444
Pass [Member] | Commercial Investor Real Estate Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned income	1,848	1,773
Special Mention [Member] | Commercial And Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned income	668	666
Special Mention [Member] | Commercial Real Estate Mortgage - Owner-Occupied [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned income	197	208
Special Mention [Member] | Commercial Real Estate Construction - Owner-Occupied [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned income	12	7
Special Mention [Member] | Commercial Investor Real Estate Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned income	168	52
Special Mention [Member] | Commercial Investor Real Estate Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned income	18	6
Substandard [Member] | Commercial And Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned income	447	346
Substandard [Member] | Commercial Real Estate Mortgage - Owner-Occupied [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned income	99	81
Substandard [Member] | Commercial Real Estate Construction - Owner-Occupied [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned income	5	13
Substandard [Member] | Commercial Investor Real Estate Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned income	75	143
Substandard [Member] | Commercial Investor Real Estate Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned income	5	7
Accrual [Member] | Residential First Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned income	14,079	14,236
Accrual [Member] | Home Equity [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned income	8,950	9,194
Accrual [Member] | Indirect-vehicles [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned income	2,759	3,053
Accrual [Member] | Indirect-other consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned income	2,547	2,349
Accrual [Member] | Consumer Credit Card Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned income	1,274	1,345
Accrual [Member] | Other consumer
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned income	1,196	1,221
Non Accrual [Member] | Commercial And Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned income	336	307
Non Accrual [Member] | Commercial Real Estate Mortgage - Owner-Occupied [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned income	67	67
Non Accrual [Member] | Commercial Real Estate Construction - Owner-Occupied [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned income	14	8
Non Accrual [Member] | Commercial Investor Real Estate Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned income	8	11
Non Accrual [Member] | Commercial Investor Real Estate Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned income	0	0
Non Accrual [Member] | Residential First Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned income	34	40
Non Accrual [Member] | Home Equity [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned income	64	63
Non Accrual [Member] | Indirect-vehicles [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned income	0	0
Non Accrual [Member] | Indirect-other consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned income	0	0
Non Accrual [Member] | Consumer Credit Card Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned income	0	0
Non Accrual [Member] | Other consumer
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned income	0	0
Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned income	46,941	45,215	43,137
Commercial Portfolio Segment [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned income	45,096	43,512
Commercial Portfolio Segment [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned income	877	881
Commercial Portfolio Segment [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned income	551	440
Commercial Portfolio Segment [Member] | Non Accrual [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned income	417	382
Total Investor Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned income	6,586	6,436	5,587
Total Investor Real Estate [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned income	6,312	6,217
Total Investor Real Estate [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned income	186	58
Total Investor Real Estate [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned income	80	150
Total Investor Real Estate [Member] | Non Accrual [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned income	8	11
Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned income	30,903	31,501	$ 31,098
Consumer Portfolio Segment [Member] | Accrual [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned income	30,805	31,398
Consumer Portfolio Segment [Member] | Non Accrual [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, net of unearned income	$ 98	$ 103

Loans and the Allowance for C_6

Loans and the Allowance for Credit Losses (Schedule of Aging Analysis Of Days Past Due (DPD) For Each Portfolio Class) (Details) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018	Mar. 31, 2018
Financing Receivable, Recorded Investment, Past Due [Line Items]
90 plus DPD, Accrual Loans	$ 223	$ 227
Total 30 plus DPD, Accrual Loans	562	677
Total Accrual	83,907	82,656
Nonaccrual	523	496
Loans, net of unearned income	84,430	83,152	$ 79,822
Commercial And Industrial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
90 plus DPD, Accrual Loans	11	8
Total 30 plus DPD, Accrual Loans	46	110
Total Accrual	40,649	38,975
Nonaccrual	336	307
Loans, net of unearned income	40,985	39,282
Commercial Real Estate Mortgage - Owner-Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
90 plus DPD, Accrual Loans	1	0
Total 30 plus DPD, Accrual Loans	13	19
Total Accrual	5,455	5,482
Nonaccrual	67	67
Loans, net of unearned income	5,522	5,549
Commercial Real Estate Construction - Owner-Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
90 plus DPD, Accrual Loans	0	0
Total 30 plus DPD, Accrual Loans	0	0
Total Accrual	420	376
Nonaccrual	14	8
Loans, net of unearned income	434	384
Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
90 plus DPD, Accrual Loans	12	8
Total 30 plus DPD, Accrual Loans	59	129
Total Accrual	46,524	44,833
Nonaccrual	417	382
Loans, net of unearned income	46,941	45,215
Commercial Investor Real Estate Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
90 plus DPD, Accrual Loans	0	0
Total 30 plus DPD, Accrual Loans	1	6
Total Accrual	4,707	4,639
Nonaccrual	8	11
Loans, net of unearned income	4,715	4,650
Commercial Investor Real Estate Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
90 plus DPD, Accrual Loans	0	0
Total 30 plus DPD, Accrual Loans	1	0
Total Accrual	1,871	1,786
Nonaccrual	0	0
Loans, net of unearned income	1,871	1,786
Total Investor Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
90 plus DPD, Accrual Loans	0	0
Total 30 plus DPD, Accrual Loans	2	6
Total Accrual	6,578	6,425
Nonaccrual	8	11
Loans, net of unearned income	6,586	6,436
Residential First Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
90 plus DPD, Accrual Loans	142	150
Total 30 plus DPD, Accrual Loans	262	288
Total Accrual	14,079	14,236
Nonaccrual	34	40
Loans, net of unearned income	14,113	14,276
Home Equity [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
90 plus DPD, Accrual Loans	37	34
Total 30 plus DPD, Accrual Loans	105	107
Total Accrual	8,950	9,194
Nonaccrual	64	63
Loans, net of unearned income	9,014	9,257
Indirect-vehicles [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
90 plus DPD, Accrual Loans	7	9
Total 30 plus DPD, Accrual Loans	50	60
Total Accrual	2,759	3,053
Nonaccrual	0	0
Loans, net of unearned income	2,759	3,053
Indirect-other consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
90 plus DPD, Accrual Loans	1	1
Total 30 plus DPD, Accrual Loans	21	21
Total Accrual	2,547	2,349
Nonaccrual	0	0
Loans, net of unearned income	2,547	2,349
Consumer Credit Card Financing Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
90 plus DPD, Accrual Loans	20	20
Total 30 plus DPD, Accrual Loans	39	41
Total Accrual	1,274	1,345
Nonaccrual	0	0
Loans, net of unearned income	1,274	1,345
Other consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
90 plus DPD, Accrual Loans	4	5
Total 30 plus DPD, Accrual Loans	24	25
Total Accrual	1,196	1,221
Nonaccrual	0	0
Loans, net of unearned income	1,196	1,221
Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
90 plus DPD, Accrual Loans	211	219
Total 30 plus DPD, Accrual Loans	501	542
Total Accrual	30,805	31,398
Nonaccrual	98	103
Loans, net of unearned income	30,903	31,501
Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total 30 plus DPD, Accrual Loans	110	140
Financing Receivables, 60 to 89 Days Past Due [Member] | Commercial And Industrial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total 30 plus DPD, Accrual Loans	11	22
Financing Receivables, 60 to 89 Days Past Due [Member] | Commercial Real Estate Mortgage - Owner-Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total 30 plus DPD, Accrual Loans	2	7
Financing Receivables, 60 to 89 Days Past Due [Member] | Commercial Real Estate Construction - Owner-Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total 30 plus DPD, Accrual Loans	0	0
Financing Receivables, 60 to 89 Days Past Due [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total 30 plus DPD, Accrual Loans	13	29
Financing Receivables, 60 to 89 Days Past Due [Member] | Commercial Investor Real Estate Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total 30 plus DPD, Accrual Loans	0	0
Financing Receivables, 60 to 89 Days Past Due [Member] | Commercial Investor Real Estate Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total 30 plus DPD, Accrual Loans	1	0
Financing Receivables, 60 to 89 Days Past Due [Member] | Total Investor Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total 30 plus DPD, Accrual Loans	1	0
Financing Receivables, 60 to 89 Days Past Due [Member] | Residential First Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total 30 plus DPD, Accrual Loans	43	53
Financing Receivables, 60 to 89 Days Past Due [Member] | Home Equity [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total 30 plus DPD, Accrual Loans	24	26
Financing Receivables, 60 to 89 Days Past Due [Member] | Indirect-vehicles [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total 30 plus DPD, Accrual Loans	9	11
Financing Receivables, 60 to 89 Days Past Due [Member] | Indirect-other consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total 30 plus DPD, Accrual Loans	7	7
Financing Receivables, 60 to 89 Days Past Due [Member] | Consumer Credit Card Financing Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total 30 plus DPD, Accrual Loans	8	9
Financing Receivables, 60 to 89 Days Past Due [Member] | Other consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total 30 plus DPD, Accrual Loans	5	5
Financing Receivables, 60 to 89 Days Past Due [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total 30 plus DPD, Accrual Loans	96	111
Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total 30 plus DPD, Accrual Loans	229	310
Financing Receivables, 30 to 59 Days Past Due [Member] | Commercial And Industrial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total 30 plus DPD, Accrual Loans	24	80
Financing Receivables, 30 to 59 Days Past Due [Member] | Commercial Real Estate Mortgage - Owner-Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total 30 plus DPD, Accrual Loans	10	12
Financing Receivables, 30 to 59 Days Past Due [Member] | Commercial Real Estate Construction - Owner-Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total 30 plus DPD, Accrual Loans	0	0
Financing Receivables, 30 to 59 Days Past Due [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total 30 plus DPD, Accrual Loans	34	92
Financing Receivables, 30 to 59 Days Past Due [Member] | Commercial Investor Real Estate Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total 30 plus DPD, Accrual Loans	1	6
Financing Receivables, 30 to 59 Days Past Due [Member] | Commercial Investor Real Estate Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total 30 plus DPD, Accrual Loans	0	0
Financing Receivables, 30 to 59 Days Past Due [Member] | Total Investor Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total 30 plus DPD, Accrual Loans	1	6
Financing Receivables, 30 to 59 Days Past Due [Member] | Residential First Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total 30 plus DPD, Accrual Loans	77	85
Financing Receivables, 30 to 59 Days Past Due [Member] | Home Equity [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total 30 plus DPD, Accrual Loans	44	47
Financing Receivables, 30 to 59 Days Past Due [Member] | Indirect-vehicles [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total 30 plus DPD, Accrual Loans	34	40
Financing Receivables, 30 to 59 Days Past Due [Member] | Indirect-other consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total 30 plus DPD, Accrual Loans	13	13
Financing Receivables, 30 to 59 Days Past Due [Member] | Consumer Credit Card Financing Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total 30 plus DPD, Accrual Loans	11	12
Financing Receivables, 30 to 59 Days Past Due [Member] | Other consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total 30 plus DPD, Accrual Loans	15	15
Financing Receivables, 30 to 59 Days Past Due [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total 30 plus DPD, Accrual Loans	$ 194	$ 212

Loans and the Allowance for C_7

Loans and the Allowance for Credit Losses (Impaired Financing Receivables) (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	[1]	$ 1,077		$ 1,043
Impaired Financing Receivable Chargeoffs And Payments Applied	[2]	121		109
Impaired Financing Receivable, Recorded Investment	[3]	956		934
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	[3]	120		130
Impaired Financing Receivable, with Related Allowance, Recorded Investment	[3]	836		804
Impaired Financing Receivable, Related Allowance		$ 151		$ 132
Impaired Financing Receivable, Coverage Percentage	[4]	25.30%		23.10%
Impaired Financing Receivable, Average Recorded Investment		$ 952	$ 1,360
Impaired Financing Receivable, Interest Income Recognized		6	12
Commercial And Industrial [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	[1]	510		$ 468
Impaired Financing Receivable Chargeoffs And Payments Applied	[2]	90		77
Impaired Financing Receivable, Recorded Investment	[3]	420		391
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	[3]	111		113
Impaired Financing Receivable, with Related Allowance, Recorded Investment	[3]	309		278
Impaired Financing Receivable, Related Allowance		$ 89		$ 76
Impaired Financing Receivable, Coverage Percentage	[4]	35.10%		32.70%
Impaired Financing Receivable, Average Recorded Investment		$ 411	533
Impaired Financing Receivable, Interest Income Recognized		1	3
Commercial Real Estate Mortgage - Owner-Occupied [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	[1]	99		$ 102
Impaired Financing Receivable Chargeoffs And Payments Applied	[2]	10		11
Impaired Financing Receivable, Recorded Investment	[3]	89		91
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	[3]	8		13
Impaired Financing Receivable, with Related Allowance, Recorded Investment	[3]	81		78
Impaired Financing Receivable, Related Allowance		$ 27		$ 25
Impaired Financing Receivable, Coverage Percentage	[4]	37.40%		35.30%
Impaired Financing Receivable, Average Recorded Investment		$ 93	166
Impaired Financing Receivable, Interest Income Recognized		1	3
Commercial Real Estate Construction - Owner-Occupied [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	[1]	16		$ 9
Impaired Financing Receivable Chargeoffs And Payments Applied	[2]	2		1
Impaired Financing Receivable, Recorded Investment	[3]	14		8
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	[3]	1		0
Impaired Financing Receivable, with Related Allowance, Recorded Investment	[3]	13		8
Impaired Financing Receivable, Related Allowance		$ 3		$ 3
Impaired Financing Receivable, Coverage Percentage	[4]	31.30%		44.40%
Impaired Financing Receivable, Average Recorded Investment		$ 13	6
Impaired Financing Receivable, Interest Income Recognized		0	0
Commercial Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	[1]	625		$ 579
Impaired Financing Receivable Chargeoffs And Payments Applied	[2]	102		89
Impaired Financing Receivable, Recorded Investment	[3]	523		490
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	[3]	120		126
Impaired Financing Receivable, with Related Allowance, Recorded Investment	[3]	403		364
Impaired Financing Receivable, Related Allowance		$ 119		$ 104
Impaired Financing Receivable, Coverage Percentage	[4]	35.40%		33.30%
Impaired Financing Receivable, Average Recorded Investment		$ 517	705
Impaired Financing Receivable, Interest Income Recognized		2	6
Commercial Investor Real Estate Mortgage [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	[1]	22		$ 26
Impaired Financing Receivable Chargeoffs And Payments Applied	[2]	1		1
Impaired Financing Receivable, Recorded Investment	[3]	21		25
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	[3]	0		4
Impaired Financing Receivable, with Related Allowance, Recorded Investment	[3]	21		21
Impaired Financing Receivable, Related Allowance		$ 3		$ 2
Impaired Financing Receivable, Coverage Percentage	[4]	18.20%		11.50%
Impaired Financing Receivable, Average Recorded Investment		$ 21	76
Impaired Financing Receivable, Interest Income Recognized		0	1
Commercial Investor Real Estate Construction [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	[1]	1
Impaired Financing Receivable Chargeoffs And Payments Applied	[2]	0
Impaired Financing Receivable, Recorded Investment	[3]	1
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	[3]	0
Impaired Financing Receivable, with Related Allowance, Recorded Investment	[3]	1
Impaired Financing Receivable, Related Allowance		$ 0
Impaired Financing Receivable, Coverage Percentage	[4]	0.00%
Impaired Financing Receivable, Average Recorded Investment		$ 0	30
Impaired Financing Receivable, Interest Income Recognized		0	0
Total Investor Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	[1]	23		$ 26
Impaired Financing Receivable Chargeoffs And Payments Applied	[2]	1		1
Impaired Financing Receivable, Recorded Investment	[3]	22		25
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	[3]	0		4
Impaired Financing Receivable, with Related Allowance, Recorded Investment	[3]	22		21
Impaired Financing Receivable, Related Allowance		$ 3		$ 2
Impaired Financing Receivable, Coverage Percentage	[4]	17.40%		11.50%
Impaired Financing Receivable, Average Recorded Investment		$ 21	106
Impaired Financing Receivable, Interest Income Recognized		0	1
Residential First Mortgage [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	[1]	226		$ 225
Impaired Financing Receivable Chargeoffs And Payments Applied	[2]	16		17
Impaired Financing Receivable, Recorded Investment	[3]	210		208
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	[3]	0		0
Impaired Financing Receivable, with Related Allowance, Recorded Investment	[3]	210		208
Impaired Financing Receivable, Related Allowance		$ 22		$ 20
Impaired Financing Receivable, Coverage Percentage	[4]	16.80%		16.40%
Impaired Financing Receivable, Average Recorded Investment		$ 209	288
Impaired Financing Receivable, Interest Income Recognized		1	2
Home Equity [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	[1]	197		$ 206
Impaired Financing Receivable Chargeoffs And Payments Applied	[2]	2		2
Impaired Financing Receivable, Recorded Investment	[3]	195		204
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	[3]	0		0
Impaired Financing Receivable, with Related Allowance, Recorded Investment	[3]	195		204
Impaired Financing Receivable, Related Allowance		$ 7		$ 6
Impaired Financing Receivable, Coverage Percentage	[4]	4.60%		3.90%
Impaired Financing Receivable, Average Recorded Investment		$ 198	252
Impaired Financing Receivable, Interest Income Recognized		3	3
Consumer Credit Card Financing Receivable [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	[1]	1		$ 1
Impaired Financing Receivable Chargeoffs And Payments Applied	[2]	0		0
Impaired Financing Receivable, Recorded Investment	[3]	1		1
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	[3]	0		0
Impaired Financing Receivable, with Related Allowance, Recorded Investment	[3]	1		1
Impaired Financing Receivable, Related Allowance		$ 0		$ 0
Impaired Financing Receivable, Coverage Percentage	[4]	0.00%		0.00%
Impaired Financing Receivable, Average Recorded Investment		$ 1	1
Impaired Financing Receivable, Interest Income Recognized		0	0
Other consumer
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	[1]	5		$ 6
Impaired Financing Receivable Chargeoffs And Payments Applied	[2]	0		0
Impaired Financing Receivable, Recorded Investment	[3]	5		6
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	[3]	0		0
Impaired Financing Receivable, with Related Allowance, Recorded Investment	[3]	5		6
Impaired Financing Receivable, Related Allowance		$ 0		$ 0
Impaired Financing Receivable, Coverage Percentage	[4]	0.00%		0.00%
Impaired Financing Receivable, Average Recorded Investment		$ 6	8
Impaired Financing Receivable, Interest Income Recognized		0	0
Consumer Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	[1]	429		$ 438
Impaired Financing Receivable Chargeoffs And Payments Applied	[2]	18		19
Impaired Financing Receivable, Recorded Investment	[3]	411		419
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	[3]	0		0
Impaired Financing Receivable, with Related Allowance, Recorded Investment	[3]	411		419
Impaired Financing Receivable, Related Allowance		$ 29		$ 26
Impaired Financing Receivable, Coverage Percentage	[4]	11.00%		10.30%
Impaired Financing Receivable, Average Recorded Investment		$ 414	549
Impaired Financing Receivable, Interest Income Recognized		4	$ 5
Non Accrual [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	[1]	563		$ 522
Impaired Financing Receivable Chargeoffs And Payments Applied	[2]	108		97
Impaired Financing Receivable, Recorded Investment	[3]	455		425
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	[3]	120		130
Impaired Financing Receivable, with Related Allowance, Recorded Investment	[3]	335		295
Impaired Financing Receivable, Related Allowance		$ 109		$ 91
Impaired Financing Receivable, Coverage Percentage	[4]	38.50%		36.00%
Non Accrual [Member] | Commercial And Industrial [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	[1]	$ 426		$ 384
Impaired Financing Receivable Chargeoffs And Payments Applied	[2]	90		77
Impaired Financing Receivable, Recorded Investment	[3]	336		307
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	[3]	111		113
Impaired Financing Receivable, with Related Allowance, Recorded Investment	[3]	225		194
Impaired Financing Receivable, Related Allowance		$ 77		$ 62
Impaired Financing Receivable, Coverage Percentage	[4]	39.20%		36.20%
Non Accrual [Member] | Commercial Real Estate Mortgage - Owner-Occupied [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	[1]	$ 75		$ 76
Impaired Financing Receivable Chargeoffs And Payments Applied	[2]	8		9
Impaired Financing Receivable, Recorded Investment	[3]	67		67
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	[3]	8		13
Impaired Financing Receivable, with Related Allowance, Recorded Investment	[3]	59		54
Impaired Financing Receivable, Related Allowance		$ 25		$ 23
Impaired Financing Receivable, Coverage Percentage	[4]	44.00%		42.10%
Non Accrual [Member] | Commercial Real Estate Construction - Owner-Occupied [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	[1]	$ 16		$ 9
Impaired Financing Receivable Chargeoffs And Payments Applied	[2]	2		1
Impaired Financing Receivable, Recorded Investment	[3]	14		8
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	[3]	1		0
Impaired Financing Receivable, with Related Allowance, Recorded Investment	[3]	13		8
Impaired Financing Receivable, Related Allowance		$ 3		$ 3
Impaired Financing Receivable, Coverage Percentage	[4]	31.30%		44.40%
Non Accrual [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	[1]	$ 517		$ 469
Impaired Financing Receivable Chargeoffs And Payments Applied	[2]	100		87
Impaired Financing Receivable, Recorded Investment	[3]	417		382
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	[3]	120		126
Impaired Financing Receivable, with Related Allowance, Recorded Investment	[3]	297		256
Impaired Financing Receivable, Related Allowance		$ 105		$ 88
Impaired Financing Receivable, Coverage Percentage	[4]	39.70%		37.30%
Non Accrual [Member] | Commercial Investor Real Estate Mortgage [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	[1]	$ 8		$ 11
Impaired Financing Receivable Chargeoffs And Payments Applied	[2]	0		0
Impaired Financing Receivable, Recorded Investment	[3]	8		11
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	[3]	0		4
Impaired Financing Receivable, with Related Allowance, Recorded Investment	[3]	8		7
Impaired Financing Receivable, Related Allowance		$ 2		$ 1
Impaired Financing Receivable, Coverage Percentage	[4]	25.00%		9.10%
Non Accrual [Member] | Total Investor Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	[1]	$ 8		$ 11
Impaired Financing Receivable Chargeoffs And Payments Applied	[2]	0		0
Impaired Financing Receivable, Recorded Investment	[3]	8		11
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	[3]	0		4
Impaired Financing Receivable, with Related Allowance, Recorded Investment	[3]	8		7
Impaired Financing Receivable, Related Allowance		$ 2		$ 1
Impaired Financing Receivable, Coverage Percentage	[4]	25.00%		9.10%
Non Accrual [Member] | Residential First Mortgage [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	[1]	$ 27		$ 31
Impaired Financing Receivable Chargeoffs And Payments Applied	[2]	7		8
Impaired Financing Receivable, Recorded Investment	[3]	20		23
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	[3]	0		0
Impaired Financing Receivable, with Related Allowance, Recorded Investment	[3]	20		23
Impaired Financing Receivable, Related Allowance		$ 2		$ 2
Impaired Financing Receivable, Coverage Percentage	[4]	33.30%		32.30%
Non Accrual [Member] | Home Equity [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	[1]	$ 11		$ 11
Impaired Financing Receivable Chargeoffs And Payments Applied	[2]	1		2
Impaired Financing Receivable, Recorded Investment	[3]	10		9
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	[3]	0		0
Impaired Financing Receivable, with Related Allowance, Recorded Investment	[3]	10		9
Impaired Financing Receivable, Related Allowance		$ 0		$ 0
Impaired Financing Receivable, Coverage Percentage	[4]	9.10%		18.20%
Non Accrual [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	[1]	$ 38		$ 42
Impaired Financing Receivable Chargeoffs And Payments Applied	[2]	8		10
Impaired Financing Receivable, Recorded Investment	[3]	30		32
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	[3]	0		0
Impaired Financing Receivable, with Related Allowance, Recorded Investment	[3]	30		32
Impaired Financing Receivable, Related Allowance		$ 2		$ 2
Impaired Financing Receivable, Coverage Percentage	[4]	26.30%		28.60%
Accrual [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	[1]	$ 514		$ 521
Impaired Financing Receivable Chargeoffs And Payments Applied	[2]	13		12
Impaired Financing Receivable, with Related Allowance, Recorded Investment	[3]	501		509
Impaired Financing Receivable, Related Allowance		$ 42		$ 41
Impaired Financing Receivable, Coverage Percentage	[4]	10.70%		10.20%
Accrual [Member] | Commercial And Industrial [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	[1]	$ 84		$ 84
Impaired Financing Receivable Chargeoffs And Payments Applied	[2]	0		0
Impaired Financing Receivable, with Related Allowance, Recorded Investment	[3]	84		84
Impaired Financing Receivable, Related Allowance		$ 12		$ 14
Impaired Financing Receivable, Coverage Percentage	[4]	14.30%		16.70%
Accrual [Member] | Commercial Real Estate Mortgage - Owner-Occupied [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	[1]	$ 24		$ 26
Impaired Financing Receivable Chargeoffs And Payments Applied	[2]	2		2
Impaired Financing Receivable, with Related Allowance, Recorded Investment	[3]	22		24
Impaired Financing Receivable, Related Allowance		$ 2		$ 2
Impaired Financing Receivable, Coverage Percentage	[4]	16.70%		15.40%
Accrual [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	[1]	$ 108		$ 110
Impaired Financing Receivable Chargeoffs And Payments Applied	[2]	2		2
Impaired Financing Receivable, with Related Allowance, Recorded Investment	[3]	106		108
Impaired Financing Receivable, Related Allowance		$ 14		$ 16
Impaired Financing Receivable, Coverage Percentage	[4]	14.80%		16.40%
Accrual [Member] | Commercial Investor Real Estate Mortgage [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	[1]	$ 14		$ 15
Impaired Financing Receivable Chargeoffs And Payments Applied	[2]	1		1
Impaired Financing Receivable, with Related Allowance, Recorded Investment	[3]	13		14
Impaired Financing Receivable, Related Allowance		$ 1		$ 1
Impaired Financing Receivable, Coverage Percentage	[4]	14.30%		13.30%
Accrual [Member] | Commercial Investor Real Estate Construction [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	[1]	$ 1
Impaired Financing Receivable Chargeoffs And Payments Applied	[2]	0
Impaired Financing Receivable, with Related Allowance, Recorded Investment	[3]	1
Impaired Financing Receivable, Related Allowance		$ 0
Impaired Financing Receivable, Coverage Percentage	[4]	0.00%
Accrual [Member] | Total Investor Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	[1]	$ 15		$ 15
Impaired Financing Receivable Chargeoffs And Payments Applied	[2]	1		1
Impaired Financing Receivable, with Related Allowance, Recorded Investment	[3]	14		14
Impaired Financing Receivable, Related Allowance		$ 1		$ 1
Impaired Financing Receivable, Coverage Percentage	[4]	13.30%		13.30%
Accrual [Member] | Residential First Mortgage [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	[1]	$ 199		$ 194
Impaired Financing Receivable Chargeoffs And Payments Applied	[2]	9		9
Impaired Financing Receivable, with Related Allowance, Recorded Investment	[3]	190		185
Impaired Financing Receivable, Related Allowance		$ 20		$ 18
Impaired Financing Receivable, Coverage Percentage	[4]	14.60%		13.90%
Accrual [Member] | Home Equity [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	[1]	$ 186		$ 195
Impaired Financing Receivable Chargeoffs And Payments Applied	[2]	1		0
Impaired Financing Receivable, with Related Allowance, Recorded Investment	[3]	185		195
Impaired Financing Receivable, Related Allowance		$ 7		$ 6
Impaired Financing Receivable, Coverage Percentage	[4]	4.30%		3.10%
Accrual [Member] | Consumer Credit Card Financing Receivable [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	[1]	$ 1		$ 1
Impaired Financing Receivable Chargeoffs And Payments Applied	[2]	0		0
Impaired Financing Receivable, with Related Allowance, Recorded Investment	[3]	1		1
Impaired Financing Receivable, Related Allowance		$ 0		$ 0
Impaired Financing Receivable, Coverage Percentage	[4]	0.00%		0.00%
Accrual [Member] | Other consumer
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	[1]	$ 5		$ 6
Impaired Financing Receivable Chargeoffs And Payments Applied	[2]	0		0
Impaired Financing Receivable, with Related Allowance, Recorded Investment	[3]	5		6
Impaired Financing Receivable, Related Allowance		$ 0		$ 0
Impaired Financing Receivable, Coverage Percentage	[4]	0.00%		0.00%
Accrual [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	[1]	$ 391		$ 396
Impaired Financing Receivable Chargeoffs And Payments Applied	[2]	10		9
Impaired Financing Receivable, with Related Allowance, Recorded Investment	[3]	381		387
Impaired Financing Receivable, Related Allowance		$ 27		$ 24
Impaired Financing Receivable, Coverage Percentage	[4]	9.50%		8.30%
[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 C_8

Loans and the Allowance for Credit Losses (Loans By Class Modified In TDR) (Details) $ in Millions	3 Months Ended
	Mar. 31, 2019USD ($)obligor	Mar. 31, 2018USD ($)obligor
Financing Receivable, Modifications [Line Items]
Number of Obligors | obligor	165	154
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 116	$ 206
Increase in Allowance at Modification	$ 2	$ 4
Commercial And Industrial [Member]
Financing Receivable, Modifications [Line Items]
Number of Obligors | obligor	26	29
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 78	$ 164
Increase in Allowance at Modification	$ 1	$ 2
Commercial Real Estate Mortgage - Owner-Occupied [Member]
Financing Receivable, Modifications [Line Items]
Number of Obligors | obligor	17	18
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 12	$ 14
Increase in Allowance at Modification	$ 0	$ 0
Commercial Real Estate Construction - Owner-Occupied [Member]
Financing Receivable, Modifications [Line Items]
Number of Obligors | obligor	1
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 2
Increase in Allowance at Modification	$ 0
Commercial investor real estate mortgage [Member]
Financing Receivable, Modifications [Line Items]
Number of Obligors | obligor	3	10
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 11	$ 19
Increase in Allowance at Modification	$ 0	$ 1
Commercial Investor Real Estate Construction [Member]
Financing Receivable, Modifications [Line Items]
Number of Obligors | obligor	2
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 0
Increase in Allowance at Modification	$ 0
Residential First Mortgage [Member]
Financing Receivable, Modifications [Line Items]
Number of Obligors | obligor	34	53
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 10	$ 8
Increase in Allowance at Modification	$ 1	$ 1
Home Equity [Member]
Financing Receivable, Modifications [Line Items]
Number of Obligors | obligor	34	17
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 3	$ 1
Increase in Allowance at Modification	$ 0	$ 0
Consumer Credit Card Financing Receivable [Member]
Financing Receivable, Modifications [Line Items]
Number of Obligors | obligor	18	14
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 0	$ 0
Increase in Allowance at Modification	$ 0	$ 0
Indirect-vehicles and other consumer [Member]
Financing Receivable, Modifications [Line Items]
Number of Obligors | obligor	30	13
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 0	$ 0
Increase in Allowance at Modification	$ 0	$ 0
Commercial Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Number of Obligors | obligor	44	47
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 92	$ 178
Increase in Allowance at Modification	$ 1	$ 2
Total Investor Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Number of Obligors | obligor	5	10
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 11	$ 19
Increase in Allowance at Modification	$ 0	$ 1
Consumer Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Number of Obligors | obligor	116	97
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 13	$ 9
Increase in Allowance at Modification	$ 1	$ 1

Loans and the Allowance for C_9

Loans and the Allowance for Credit Losses (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount of loans first reported as new TDRs	$ 85	$ 171
Re-Defaulted Commercial And Investor Real Estate Loans Modified In Tdr During Period And On Non Accrual Status	18
Total Restructured Binding Unfunded Commitment	7
Federal Home Loan Bank [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Pledged loans	21,900
Federal Reserve Bank [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Pledged loans	25,900
Indirect-other consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
loans purchased	171	$ 70
Residential First Mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Significant Sales	$ 167
Residential First Mortgage [Member] | Minimum [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing period for consumer loans, in years	15 years
Residential First Mortgage [Member] | Maximum [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing period for consumer loans, in years	30 years

Servicing of Financial Assets_2

Servicing of Financial Assets (Analysis Of Residential Mortgage Servicing Rights Under The Fair Value Measurement Method) (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2019	Mar. 31, 2018
Servicing Asset at Fair Value, Amount [Roll Forward]
Carrying value, beginning of period		$ 418	$ 336
Additions		7	8
Increase (decrease) in fair value, due to change in valuation inputs or assumptions		(28)	22
Increase (decrease) in fair value, economic amortization associated with borrower repayments	[1]	(11)	(10)
Carrying value, end of period		$ 386	$ 356
[1]	"Economic amortization associated with borrower repayments" includes both total loan payoffs as well as partial paydowns.

Servicing of Financial Assets_3

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 Residential Mortgage Servicing Rights) (Details) $ in Millions	3 Months Ended
	Mar. 31, 2019USD ($)basis_point	Mar. 31, 2018USD ($)basis_point
Servicing Assets at Fair Value [Line Items]
Unpaid principal balance	$ 36,050	$ 31,641
Weighted-average prepayment speed (CPR; percentage)	10.40%	9.00%
Estimated impact on fair value of a 10% increase in prepayment speed	$ (21)	$ (24)
Estimated impact on fair value of a 20% increase in prepayment speed	$ (38)	$ (43)
Option-adjusted spread (basis points) | basis_point	759	842
Estimated impact on fair value of a 10% increase in other assumptions	$ (12)	$ (12)
Estimated impact on fair value of a 20% increase in other assumptions	$ (23)	$ (24)
Weighted-average coupon interest rate	4.20%	4.10%
Assumption for Fair Value of Assets or Liabilities that relate to Transferor's Continuing Involvement, Weighted Average Life	279 months	280 months
Weighted Average Servicing Fee Basis Points | basis_point	27.1	27.3

Servicing of Financial Assets_4

Servicing of Financial Assets (Schedule Of Fees Resulting From The Servicing Of Mortgage Loans) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Residential Mortgage [Member]
Contractually Specified Servicing Fees, Late Fees, and Ancillary Fees Earned in Exchange for Servicing Financial Assets [Line Items]
Contractually Specified Servicing Fee, Late Fee, and Ancillary Fee Earned in Exchange for Servicing Financial Asset	$ 26	$ 23

Servicing of Financial Assets_5

Servicing of Financial Assets (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 27, 2019	Dec. 31, 2018	Mar. 31, 2018
Servicing Assets at Fair Value [Line Items]
Unpaid principal balance	$ 36,050			$ 31,641
Residential Mortgage [Member]
Servicing Assets at Fair Value [Line Items]
Servicing Asset		$ 2
DUS Portfolio [Member]
Servicing Assets at Fair Value [Line Items]
Unpaid principal balance	3,600		$ 3,600
Commercial Real Estate [Member]
Servicing Assets at Fair Value [Line Items]
Servicing Asset at Amortized Cost	55		56
Loss Share Guarantee	4		$ 4
Residential First Mortgage [Member]
Servicing Assets at Fair Value [Line Items]
Financing Receivable, Significant Sales	$ 167

Leases (Narrative) (Details)

Leases (Narrative) (Details) - USD ($) $ in Millions	Mar. 31, 2019	Jan. 01, 2019
Lessee, Lease, Description [Line Items]
Operating Lease, Right-of-Use Asset	$ 430	$ 451
Operating Lease, Liability	$ 511	$ 451
Minimum [Member]
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Term of Contract	1 year
Maximum [Member]
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Term of Contract	20 years

Leases (Lessee_ Information rel

Leases (Lessee: Information related to Operating Leases) (Details) $ in Millions	3 Months Ended
	Mar. 31, 2019USD ($)
Leases [Abstract]
Operating Lease, Cost	$ 21
Operating Lease, Weighted Average Remaining Lease Term	9 years 2 months 12 days
Operating Lease, Weighted Average Discount Rate, Percent	3.30%

Leases (Lessee_ Schedule of Fut

Leases (Lessee: Schedule of Future, Undiscounted Minimum Lease Payments on Operating Leases) (Details) - USD ($) $ in Millions	Mar. 31, 2019	Jan. 01, 2019
Leases [Abstract]
Lessee, Operating Lease, Liability, Payments, Due Next Twelve Months	$ 70
Lessee, Operating Lease, Liability, Payments, Due Year Two	90
Lessee, Operating Lease, Liability, Payments, Due Year Three	80
Lessee, Operating Lease, Liability, Payments, Due Year Four	71
Lessee, Operating Lease, Liability, Payments, Due Year Five	63
Lessee, Operating Lease, Liability, Payments, Due after Year Five	248
Lessee, Operating Lease, Liability, Payments, Due	622
Lessee, Operating Lease, Liability, Undiscounted Excess Amount	111
Operating Lease, Liability	$ 511	$ 451

Leases (Lessor_ Summary of Sale

Leases (Lessor: Summary of Sales-Type, Direct Financing, Operating and Leveraged Leases) (Details) $ in Millions	3 Months Ended
	Mar. 31, 2019USD ($)
Sales-Type and Direct Financing
Net interest income and other financing income	$ 8
Lease receivable	1,046
Unearned income	(245)
Guaranteed residual	42
Unguaranteed residual	136
Total net investment	979
Operating
Net interest income and other financing income	3
Lease receivable	152
Unearned income	(39)
Guaranteed residual	0
Unguaranteed residual	236
Total net investment	349
Leveraged
Net interest income and other financing income	3
Lease receivable	185
Unearned income	(125)
Guaranteed residual	0
Unguaranteed residual	159
Total net investment	219
Total
Net interest income and other financing income	14
Lease receivable	1,383
Unearned income	(409)
Guaranteed residual	42
Unguaranteed residual	531
Total net investment	$ 1,547

Leases (Lessor_ Schedule of Min

Leases (Lessor: Schedule of Minimum Future Payments Due From Customers for Sales-Type, Direct Financing, and Operating Leases) (Details) $ in Millions	Mar. 31, 2019USD ($)
Leases [Abstract]
Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received, Remainder of Fiscal Year	$ 142
Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received, Two Years	149
Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received, Three Years	115
Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received, Four Years	94
Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received, Five Years	76
Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received, Thereafter	470
Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received	1,046
Lessor, Operating Lease, Payments to be Received, Remainder of Fiscal Year	40
Lessor, Operating Lease, Payments to be Received, Two Years	43
Lessor, Operating Lease, Payments to be Received, Three Years	30
Lessor, Operating Lease, Payments to be Received, Four Years	17
Lessor, Operating Lease, Payments to be Received, Five Years	8
Lessor, Operating Lease, Payments to be Received, Thereafter	14
Lessor, Operating Lease, Payments to be Received	152
Lessor, Sales-type, Direct Financing and Operating Leases, Payments to be Received, Remainder of Fiscal Year	182
Lessor, Sales-type, Direct Financing and Operating Leases, Payments to be Received, Two Years	192
Lessor, Sales-type, Direct Financing and Operating Leases, Payments to be Received, Three Years	145
Lessor, Sales-type, Direct Financing and Operating Leases, Payments to be Received, Four Years	111
Lessor, Sales-type, Direct Financing and Operating Leases, Payments to be Received, Five Years	84
Lessor, Sales-type, Direct Financing and Operating Leases, Payments to be Received, Thereafter	484
Lessor, Sales-type, Direct Financing and Operating Leases, Payments to be Received	$ 1,198

Preferred Stock Issuances (Deta

Preferred Stock Issuances (Details) - USD ($) $ in Millions		3 Months Ended	120 Months Ended
		Mar. 31, 2019	Sep. 15, 2024	Dec. 31, 2018
Class of Stock [Line Items]
Preferred Stock, Liquidation Preference, Value		$ 1,000
Preferred Stock, Carrying Amount		$ 820		$ 820
Series A Preferred Stock [Member]
Class of Stock [Line Items]
Preferred Stock, Dividend Rate, Percentage		6.375%
Preferred Stock, Liquidation Preference, Value		$ 500
Preferred Stock, Carrying Amount		$ 387		387
Series B Preferred Stock [Member]
Class of Stock [Line Items]
Preferred Stock, Dividend Rate, Percentage	[1]	6.375%
Preferred Stock, Liquidation Preference, Value		$ 500
Preferred Stock, Carrying Amount		$ 433		$ 433
Forecast [Member] | Series B Preferred Stock Dividend Scenario 1 [Member]
Class of Stock [Line Items]
Preferred Stock, Dividend Rate, Percentage			6.375%
Plus 3-Month LIBOR [Member] | Forecast [Member] | Series B Preferred Stock Dividend Scenario 2 [Member]
Class of Stock [Line Items]
Preferred Stock, Dividend Rate, Basis Spread on Variable Rate, Percentage			3.536%
[1]	Dividends, if declared, will be paid quarterly at an annual rate equal to (i) for each period beginning prior to September 15, 2024, 6.375%, and (ii) for each period beginning on or after September 15, 2024, three-month LIBOR plus 3.536%.

Schedule of Accumulated Other C

Schedule of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Accumulated Other Comprehensive Income (Loss), Net of Tax, Period Start	$ (964)	$ (749)
Other comprehensive income (loss), net of tax	366	(402)
Accumulated Other Comprehensive Income (Loss), Net of Tax, Period End	(598)	(1,151)
Accumulated Net Unrealized Loss on Held To Maturity Securities [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Accumulated Other Comprehensive Income (Loss), Net of Tax, Period Start	(27)	(33)
Other comprehensive income (loss), net of tax	1	2
Accumulated Other Comprehensive Income (Loss), Net of Tax, Period End	(26)	(31)
Accumulated Net Unrealized Securities Available For Sale Gain (Loss) [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Accumulated Other Comprehensive Income (Loss), Net of Tax, Period Start	(397)	(153)
Other comprehensive income (loss), net of tax	245	(310)
Accumulated Other Comprehensive Income (Loss), Net of Tax, Period End	(152)	(463)
Accumulated Net Gain (Loss) from Derivative Instruments Designated as Cash Flow Hedges [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Accumulated Other Comprehensive Income (Loss), Net of Tax, Period Start	(63)	(51)
Other comprehensive income (loss), net of tax	113	(100)
Accumulated Other Comprehensive Income (Loss), Net of Tax, Period End	50	(151)
Accumulated Defined Benefit Plans Adjustment [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Accumulated Other Comprehensive Income (Loss), Net of Tax, Period Start	(477)	(512)
Other comprehensive income (loss), net of tax	7	6
Accumulated Other Comprehensive Income (Loss), Net of Tax, Period End	$ (470)	$ (506)

Reclassification from Accumulat

Reclassification from Accumulated Other Comprehensive Income (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2019	Mar. 31, 2018
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest Income (Expense), Net		$ 948	$ 909
Other Noninterest Expense		(224)	(225)
Income tax (expense) benefit		(105)	(128)
Net income		394	414
Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net income	[1]	(19)	(1)
Accumulated Net Unrealized Loss on Held To Maturity Securities [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest Income (Expense), Net	[1]	(1)	(3)
Income tax (expense) benefit	[1]	0	1
Net income	[1]	(1)	(2)
Accumulated Net Unrealized Securities Available For Sale Gain (Loss) [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Securities gains (losses), net	[1]	(7)	0
Income tax (expense) benefit	[1]	2	0
Net income	[1]	(5)	0
Accumulated Net Gain (Loss) from Derivative Instruments Designated as Cash Flow Hedges [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest Income (Expense), Net	[1]	(8)	11
Income tax (expense) benefit	[1]	2	(3)
Net income	[1]	(6)	8
Accumulated Defined Benefit Plans Adjustment [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other Noninterest Expense	[1],[2]	(9)	(9)
Income tax (expense) benefit	[1]	2	2
Net income	[1]	$ (7)	$ (7)
[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 other non-interest expense on the consolidated statements of income (See Note 8 for additional details).

Stockholders' Equity And Accu_3

Stockholders' Equity And Accumulated Other Comprehensive Income (Loss) (Narrative) (Details) - USD ($) $ / shares in Units, shares in Millions		Aug. 15, 2029	May 07, 2019	Mar. 31, 2019	Mar. 31, 2018	Sep. 15, 2024	Apr. 30, 2019	Dec. 31, 2018	Jun. 28, 2018	Dec. 15, 2017
Stockholders' Equity And Comprehensive Income (Loss) [Line Items]
Preferred Stock, Par Value Per Share (in dollars per share)				$ 1				$ 1
Dividends, Preferred Stock				$ 16,000,000	$ 16,000,000
Preferred Stock, Liquidation Preference, Value				$ 1,000,000,000
Cash dividend declared (in dollars per share)				$ 0.14	$ 0.09
Stock repurchase plan, authorized amount									$ 2,031,000,000
Stock Repurchased and Retired During Period, Shares					102.6
Payments for Repurchase of Common Stock				$ 190,000,000	$ 235,000,000
ValueofTotalCommonStockRepurchasedUnderCurrentProgram				$ 1,800,000,000
Subsequent Event [Member]
Stockholders' Equity And Comprehensive Income (Loss) [Line Items]
Stock Repurchased and Retired During Period, Shares			4.8
Payments for Repurchase of Common Stock			$ 74,500,000
Series B Preferred Stock Dividend Scenario 1 [Member] | Forecast [Member]
Stockholders' Equity And Comprehensive Income (Loss) [Line Items]
Preferred Stock, Dividend Rate, Percentage						6.375%
Series B Preferred Stock Dividend Scenario 2 [Member] | Forecast [Member] | Plus 3-Month LIBOR [Member]
Stockholders' Equity And Comprehensive Income (Loss) [Line Items]
Preferred Stock, Dividend Rate, Basis Spread on Variable Rate, Percentage						3.536%
Series A Preferred Stock [Member]
Stockholders' Equity And Comprehensive Income (Loss) [Line Items]
Preferred Stock, Dividend Rate, Percentage				6.375%
Dividends, Preferred Stock				$ 8,000,000	8,000,000
ExcessofRedemptionAmountOverCarryingAmount										$ 113,000,000
PreferredDividendsReductiontoRetainedEarningsatRedemption										100,000,000
PreferredStockIssuanceCostsReductiontoNetIncome										$ 13,000,000
Preferred Stock, Liquidation Preference, Value				$ 500,000,000
Series A Preferred Stock [Member] | Debt Instrument, Redemption, Period One [Member]
Stockholders' Equity And Comprehensive Income (Loss) [Line Items]
Preferred Stock, Redemption Terms				90 days
Series B Preferred Stock [Member]
Stockholders' Equity And Comprehensive Income (Loss) [Line Items]
Preferred Stock, Dividend Rate, Percentage	[1]			6.375%
Dividends, Preferred Stock				$ 8,000,000	$ 8,000,000
Preferred Stock, Liquidation Preference, Value				$ 500,000,000
Series B Preferred Stock [Member] | Forecast [Member]
Stockholders' Equity And Comprehensive Income (Loss) [Line Items]
ExcessofRedemptionAmountOverCarryingAmount						$ 67,000,000
PreferredDividendsReductiontoRetainedEarningsatRedemption						52,000,000
PreferredStockIssuanceCostsReductiontoNetIncome						$ 15,000,000
Preferred Stock [Member]
Stockholders' Equity And Comprehensive Income (Loss) [Line Items]
Preferred Stock, liquidation preference per share (in dollars per share)				$ 1,000
Preferred Stock [Member] | Depositary Shares [Member]
Stockholders' Equity And Comprehensive Income (Loss) [Line Items]
Preferred Stock, liquidation preference per share (in dollars per share)				$ 25
Series C Preferred Stock [Member] | Subsequent Event [Member]
Stockholders' Equity And Comprehensive Income (Loss) [Line Items]
Preferred Stock, Par Value Per Share (in dollars per share)							$ 1
Preferred Stock, liquidation preference per share (in dollars per share)							$ 1,000
Preferred Stock, Liquidation Preference, Value							$ 500,000,000
Series C Preferred Stock [Member] | Subsequent Event [Member] | Depositary Shares [Member]
Stockholders' Equity And Comprehensive Income (Loss) [Line Items]
Preferred Stock, liquidation preference per share (in dollars per share)							$ 25
Series C Preferred Stock Dividend Scenario 1 [Member] [Member] | Forecast [Member]
Stockholders' Equity And Comprehensive Income (Loss) [Line Items]
Preferred Stock, Dividend Rate, Percentage		5.70%
Series C Preferred Stock Dividend Scenario 2 [Member] [Member] | Forecast [Member] | Plus 3-Month LIBOR [Member]
Stockholders' Equity And Comprehensive Income (Loss) [Line Items]
Preferred Stock, Dividend Rate, Basis Spread on Variable Rate, Percentage		3.148%
[1]	Dividends, if declared, will be paid quarterly at an annual rate equal to (i) for each period beginning prior to September 15, 2024, 6.375%, and (ii) for each period beginning on or after September 15, 2024, three-month LIBOR plus 3.536%.

Earnings (Loss) Per Common Sh_3

Earnings (Loss) Per Common Share (Computation Of Basic And Diluted Earnings (Loss) Per Common Share) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions		Jul. 02, 2018	Mar. 31, 2019	Mar. 31, 2018
Numerator:
Income from continuing operations			$ 394	$ 414
Preferred stock dividends			(16)	(16)
Net income from continuing operations available to common shareholders			378	398
Income from discontinued operations, net of tax			0	0
Net income available to common shareholders			$ 378	$ 398
Denominator:
Weighted-average common shares outstanding—basic (in shares)			1,019	1,127
Potential common shares (in shares)			9	14
Weighted-average common shares outstanding—diluted (in shares)			1,028	1,141
Earnings per common share from continuing operations:
Basic (in dollars per share)	[1]		$ 0.37	$ 0.35
Diluted (in dollars per share)	[1]		0.37	0.35
Earning (Loss) Per Common Share From Discontinued Operations:
Basic (in dollars per share)	[1],[2],[3]		0	0
Diluted (in dollars per share)	[1],[2],[3]		0	0
Earnings per common share:
Basic (in dollars per share)	[1]		0.37	0.35
Diluted (in dollars per share)	[1]		$ 0.37	$ 0.35
Antidilutive Securities Excluded from Computation of Earnings Per Share (in shares)			5	6
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax		$ 196
[1]	Certain per share amounts may not appear to reconcile due to rounding.
[2]	In a period where there is a loss from discontinued operations, basic weighted-average common shares outstanding are used to determine both basic and diluted earnings per share.
[3]	On April 4, 2018, Regions entered into a stock purchase agreement to sell Regions Insurance Group, Inc to BB&T Insurance Holdings, Inc. The transaction closed on July 2, 2018. The transaction generated an after-tax gain of $196 million. On January 11, 2012, Regions entered into a stock purchase agreement to sell Morgan Keegan and Company and related affiliates to Raymond James Financial Inc. The sale closed on April 2, 2012.

Pension and Other Postretirem_3

Pension and Other Postretirement Benefits (Schedule of Net Periodic Pension Cost) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Defined Benefit Plan Disclosure [Line Items]
Service Cost	$ 9	$ 10
Interest Cost	20	19
Expected Return on Plan Assets	(34)	(37)
Amortization of Actuarial Loss	9	9
Net Periodic Pension Cost (Credit)	4	1
Pension Plan [Member] | Qualified Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service Cost	8	9
Interest Cost	19	18
Expected Return on Plan Assets	(34)	(37)
Amortization of Actuarial Loss	8	8
Net Periodic Pension Cost (Credit)	1	(2)
Supplemental Employee Retirement Plan [Member] | Nonqualified Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service Cost	1	1
Interest Cost	1	1
Expected Return on Plan Assets	0	0
Amortization of Actuarial Loss	1	1
Net Periodic Pension Cost (Credit)	$ 3	$ 3

Derivative Financial Instrume_3

Derivative Financial Instruments and Hedging Activities (Schedule of Derivative Instruments Notional and Fair Value) (Details) - USD ($) $ in Millions		Mar. 31, 2019	Dec. 31, 2018
Derivatives, Fair Value [Line Items]
Notional Amount		$ 89,331	$ 87,394
Estimated Fair Value, Gain	[1]	427	370
Estimated Fair Value, Loss	[1]	257	340
Derivative Asset, Fair Value of Derivative Contracts Offset in Accordance with Policy Election that were Offset Under Master Netting Agreements	[1]	90	108
Derivative Liability, Fair Value of Derivative Contracts Offset In Accordance with Policy Election that were Offset Under Master Netting Agreements	[1]	90	108
Derivative Asset, Collateral, Obligation to Return Cash, Offset	[1]	131	135
Derivative Liability, Collateral, Right to Reclaim Cash, Offset	[1]	79	71
Derivative Assets	[1],[2]	206	127
Derivative Liabilities	[1],[2]	88	161
Derivative, Collateral, Right to Reclaim Securities		24	24
Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Notional Amount		18,231	15,231
Estimated Fair Value, Gain	[1]	106	72
Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Notional Amount		71,100	72,163
Estimated Fair Value, Gain	[1]	321	298
Estimated Fair Value, Loss	[1]	257	340
Interest Rate Swaps [Member] | Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Notional Amount		52,521	49,737
Interest Rate Swaps [Member] | Not Designated as Hedging Instrument [Member] | Other Assets [Member]
Derivatives, Fair Value [Line Items]
Estimated Fair Value, Gain	[1]	261	193
Interest Rate Swaps [Member] | Not Designated as Hedging Instrument [Member] | Other Liabilities [Member]
Derivatives, Fair Value [Line Items]
Estimated Fair Value, Loss	[1]	200	237
Interest Rate Options [Member] | Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Notional Amount		7,370	7,178
Interest Rate Options [Member] | Not Designated as Hedging Instrument [Member] | Other Assets [Member]
Derivatives, Fair Value [Line Items]
Estimated Fair Value, Gain	[1]	25	29
Interest Rate Options [Member] | Not Designated as Hedging Instrument [Member] | Other Liabilities [Member]
Derivatives, Fair Value [Line Items]
Estimated Fair Value, Loss	[1]	13	20
Interest Rate Futures And Forward Commitments [Member] | Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Notional Amount		4,182	7,961
Interest Rate Futures And Forward Commitments [Member] | Not Designated as Hedging Instrument [Member] | Other Assets [Member]
Derivatives, Fair Value [Line Items]
Estimated Fair Value, Gain	[1]	4	4
Interest Rate Futures And Forward Commitments [Member] | Not Designated as Hedging Instrument [Member] | Other Liabilities [Member]
Derivatives, Fair Value [Line Items]
Estimated Fair Value, Loss	[1]	8	9
Other Contract [Member] | Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Notional Amount		7,027	7,287
Other Contract [Member] | Not Designated as Hedging Instrument [Member] | Other Assets [Member]
Derivatives, Fair Value [Line Items]
Estimated Fair Value, Gain	[1]	31	72
Other Contract [Member] | Not Designated as Hedging Instrument [Member] | Other Liabilities [Member]
Derivatives, Fair Value [Line Items]
Estimated Fair Value, Loss	[1]	36	74
Fair Value Hedging [Member] | Interest Rate Swaps [Member] | Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Notional Amount		3,731	3,231
Cash Flow Hedging [Member] | Interest Rate Swaps [Member] | Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Notional Amount		9,750	8,750
Cash Flow Hedging [Member] | Interest Rate Floor [Member] | Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Notional Amount	[3]	4,750	3,250
Cash Flow Hedging [Member] | Interest Rate Floor [Member] | Designated as Hedging Instrument [Member] | Other Assets [Member]
Derivatives, Fair Value [Line Items]
Estimated Fair Value, Gain	[1],[3]	$ 106	$ 72
[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. There is no fair value presented for contracts that are characterized as settled daily.
[2]	As of both March 31, 2019 and December 31, 2018, financial instruments posted of $24 million were not offset in the consolidated balance sheets.
[3]	Estimated fair value includes premium and change in fair value of the interest rate floors.

Derivative Financial Instrume_4

Derivative Financial Instruments And Hedging Activities (Schedule Of The Effect Of Derivative Instruments On The Statements Of Operations) (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2019	Mar. 31, 2018
Derivative Instruments, Gain (Loss) [Line Items]
Debt securities - taxable		$ 165	$ 154
Loans, including fees		981	851
Deposits		108	49
Long-term borrowings		102	72
Other		224	225
Fair Value Hedging [Member] | Interest Rate Contract [Member] | Taxable Debt Securities in Interest Income [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amounts Related to Interest Settlements on Derivatives		0	0
Gain or (Loss) Recognized in Income on Derivatives		(1)	3
Gain or (Loss) Recognized in Income on Related Hedged Item		1	(3)
Gain (Loss) on Fair Value Hedges Recognized in Earnings		0	0
Fair Value Hedging [Member] | Interest Rate Contract [Member] | Loans Including Fees in Interest Income [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amounts Related to Interest Settlements on Derivatives		0	0
Gain or (Loss) Recognized in Income on Derivatives		0	0
Gain or (Loss) Recognized in Income on Related Hedged Item		0	0
Gain (Loss) on Fair Value Hedges Recognized in Earnings		0	0
Fair Value Hedging [Member] | Interest Rate Contract [Member] | Deposits in Interest Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amounts Related to Interest Settlements on Derivatives		0	0
Gain or (Loss) Recognized in Income on Derivatives		0	0
Gain or (Loss) Recognized in Income on Related Hedged Item		0	0
Gain (Loss) on Fair Value Hedges Recognized in Earnings		0	0
Fair Value Hedging [Member] | Interest Rate Contract [Member] | Long-term Borrowings In Interest Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amounts Related to Interest Settlements on Derivatives		(6)	(1)
Gain or (Loss) Recognized in Income on Derivatives		33	(32)
Gain or (Loss) Recognized in Income on Related Hedged Item		(33)	32
Gain (Loss) on Fair Value Hedges Recognized in Earnings		(6)	(1)
Fair Value Hedging [Member] | Interest Rate Contract [Member] | Other in Non-Interest Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amounts Related to Interest Settlements on Derivatives		0	0
Gain or (Loss) Recognized in Income on Derivatives		0	0
Gain or (Loss) Recognized in Income on Related Hedged Item		0	0
Gain (Loss) on Fair Value Hedges Recognized in Earnings		0	0
Cash Flow Hedging [Member] | Interest Rate Contract [Member] | Taxable Debt Securities in Interest Income [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain or (Loss) Reclassified from AOCI into Income	[1],[2]	0	0
Net Income (Expense) Recognized on Cash Flow Hedges	[2]	0	0
Cash Flow Hedging [Member] | Interest Rate Contract [Member] | Loans Including Fees in Interest Income [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain or (Loss) Reclassified from AOCI into Income	[1],[2]	(8)	11
Net Income (Expense) Recognized on Cash Flow Hedges	[2]	(8)	11
Cash Flow Hedging [Member] | Interest Rate Contract [Member] | Deposits in Interest Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain or (Loss) Reclassified from AOCI into Income	[1],[2]	0	0
Net Income (Expense) Recognized on Cash Flow Hedges	[2]	0	0
Cash Flow Hedging [Member] | Interest Rate Contract [Member] | Long-term Borrowings In Interest Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain or (Loss) Reclassified from AOCI into Income	[1],[2]	0	0
Net Income (Expense) Recognized on Cash Flow Hedges	[2]	0	0
Cash Flow Hedging [Member] | Interest Rate Contract [Member] | Other in Non-Interest Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain or (Loss) Reclassified from AOCI into Income	[1],[2]	0	0
Net Income (Expense) Recognized on Cash Flow Hedges	[2]	$ 0	$ 0
[1]	Pre-tax
[2]	See Note 6 for gain or (loss) recognized for cash flow hedges in AOCI.

Derivative Financial Instrume_5

Derivative Financial Instruments and Hedging Activities (Schedule of Fair Value Hedging Basis Adjustments) (Details) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Designated as Hedging Item [Member] | Debt Available-for-sale Securities [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Hedged Asset, Fair Value Hedge	$ 86	$ 85
Hedge Asset, Fair Value Hedge, Cumulative Increase (Decrease)	1	0
Designated as Hedging Item [Member] | Long-term Debt [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Hedged Liability, Fair Value Hedge	(3,652)	(3,103)
Hedged Liability, Fair Value Hedge, Cumulative Increase (Decrease)	16	50
Not Designated as Hedging Item [Member] | Debt Available-for-sale Securities [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Hedged Asset, Fair Value Hedge	653	604
Hedge Asset, Fair Value Hedge, Cumulative Increase (Decrease)	4	4
Not Designated as Hedging Item [Member] | Long-term Debt [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Hedged Liability, Fair Value Hedge	0	0
Hedged Liability, Fair Value Hedge, Cumulative Increase (Decrease)	$ 0	$ 0

Derivative Financial Instrume_6

Derivative Financial Instruments and Hedging Activities (Schedule of Gains (Losses) Recognized Related to Derivatives Not Designated as Hedging Instruments) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Derivative [Line Items]
Gain or (Loss) of Derivatives Not Designated as Hedging Instruments	$ 30	$ (1)
Capital markets income
Derivative [Line Items]
Gain or (Loss) of Derivatives Not Designated as Hedging Instruments	5	17
Capital markets income | Interest Rate Swaps [Member]
Derivative [Line Items]
Gain or (Loss) of Derivatives Not Designated as Hedging Instruments	1	7
Capital markets income | Interest Rate Options [Member]
Derivative [Line Items]
Gain or (Loss) of Derivatives Not Designated as Hedging Instruments	2	7
Capital markets income | Interest Rate Futures And Forward Commitments [Member]
Derivative [Line Items]
Gain or (Loss) of Derivatives Not Designated as Hedging Instruments	2	1
Capital markets income | Other Contract [Member]
Derivative [Line Items]
Gain or (Loss) of Derivatives Not Designated as Hedging Instruments	0	2
Mortgage Income [Member]
Derivative [Line Items]
Gain or (Loss) of Derivatives Not Designated as Hedging Instruments	25	(18)
Mortgage Income [Member] | Interest Rate Swaps [Member]
Derivative [Line Items]
Gain or (Loss) of Derivatives Not Designated as Hedging Instruments	20	(18)
Mortgage Income [Member] | Interest Rate Options [Member]
Derivative [Line Items]
Gain or (Loss) of Derivatives Not Designated as Hedging Instruments	3	3
Mortgage Income [Member] | Interest Rate Futures And Forward Commitments [Member]
Derivative [Line Items]
Gain or (Loss) of Derivatives Not Designated as Hedging Instruments	$ 2	$ (3)

Derivative Financial Instrume_7

Derivative Financial Instruments And Hedging Activities (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Terminated Cash Flow Hedge Unrealized Gain (Loss) To Be Reclassified From OCI, After Tax Amount	$ 47	$ 136
Cash Flow Hedge Pre Tax Income (Loss)	5	$ 15
Cash flow hedge gain (loss) expected to be reclassified from AOCI into earnings within the next 12 months	31
Pre-tax net income related to amortization of discontinued cash flow hedges	$ 9
Maximum Length of Time Hedged in Cash Flow Hedge	7 years
Derivative, Notional Amount	$ 89,331		$ 87,394
Credit risk, defined as all positive exposures not collateralized	178		130
Maximum potential future exposure on swap participations	563
Aggregate fair value of all derivative instruments with credit risk	50		45
Posted collateral related to derivative instruments with credit risk	49		43
Not Designated as Hedging Instrument [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Notional Amount	71,100		72,163
Interest Rate Lock Commitments [Member] | Not Designated as Hedging Instrument [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Notional Amount	320		191
Forward Sale Commitments [Member] | Not Designated as Hedging Instrument [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Notional Amount	539		429
Forward Rate Commitments and Futures Contracts [Member] | Not Designated as Hedging Instrument [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Notional Amount	$ 4,000		$ 5,700

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 ($) $ in Millions		Mar. 31, 2019	Dec. 31, 2018	Mar. 31, 2018	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale		$ 23,786	$ 22,729
Residential mortgage servicing rights		386	418	$ 356	$ 336
Derivative Assets	[1],[2]	206	127
Derivative Liabilities	[1],[2]	88	161
Loans held for sale		284	251
Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale		23,786	22,729
Loans Held for Sale		284	251
Marketable Equity Securities		348	429
Residential mortgage servicing rights		386	418
Derivative Assets		427	370
Derivative Liabilities		257	340
Nonrecurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for sale		14	10
Foreclosed property and other real estate		26	19
Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale		174	280
Derivative Assets		1	2
Derivative Liabilities		1	2
Loans held for sale		0	0
Level 1 [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale		174	280
Loans Held for Sale		0	0
Marketable Equity Securities		348	429
Residential mortgage servicing rights		0	0
Derivative Assets		1	2
Derivative Liabilities		1	2
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
Foreclosed property and other real estate		0	0
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale		23,604	22,444
Derivative Assets		418	363
Derivative Liabilities		252	335
Loans held for sale		302	287
Level 2 [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale		23,604	22,444
Loans Held for Sale		284	251
Marketable Equity Securities		0	0
Residential mortgage servicing rights		0	0
Derivative Assets		418	363
Derivative Liabilities		252	335
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
Foreclosed property and other real estate		19	16
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale		8	5
Derivative Assets		8	5
Derivative Liabilities		4	3
Loans held for sale		16	17
Level 3 [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale	[3]	8	5
Loans Held for Sale	[3]	0	0
Marketable Equity Securities	[3]	0	0
Residential mortgage servicing rights	[3]	386	418
Derivative Assets	[3]	8	5
Derivative Liabilities	[3]	4	3
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	[3]	14	10
Foreclosed property and other real estate	[3]	7	3
Interest Rate Swaps [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets		261	193
Derivative Liabilities		200	237
Interest Rate Swaps [Member] | Level 1 [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets		0	0
Derivative Liabilities		0	0
Interest Rate Swaps [Member] | Level 2 [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets		261	193
Derivative Liabilities		200	237
Interest Rate Swaps [Member] | Level 3 [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	[3]	0	0
Derivative Liabilities	[3]	0	0
Interest Rate Options [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets		131	101
Derivative Liabilities		13	20
Interest Rate Options [Member] | Level 1 [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets		0	0
Derivative Liabilities		0	0
Interest Rate Options [Member] | Level 2 [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets		123	96
Derivative Liabilities		13	20
Interest Rate Options [Member] | Level 3 [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	[3]	8	5
Derivative Liabilities	[3]	0	0
Interest Rate Futures And Forward Commitments [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets		4	4
Derivative Liabilities		8	9
Interest Rate Futures And Forward Commitments [Member] | Level 1 [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets		0	0
Derivative Liabilities		0	0
Interest Rate Futures And Forward Commitments [Member] | Level 2 [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets		4	4
Derivative Liabilities		8	9
Interest Rate Futures And Forward Commitments [Member] | Level 3 [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	[3]	0	0
Derivative Liabilities	[3]	0	0
Other Contract [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets		31	72
Derivative Liabilities		36	74
Other Contract [Member] | Level 1 [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets		1	2
Derivative Liabilities		1	2
Other Contract [Member] | Level 2 [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets		30	70
Derivative Liabilities		31	69
Other Contract [Member] | Level 3 [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	[3]	0	0
Derivative Liabilities	[3]	4	3
US Treasury Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale		174	280
US Treasury Securities [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale		174	280
US Treasury Securities [Member] | Level 1 [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale		174	280
US Treasury Securities [Member] | Level 2 [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale		0	0
US Treasury Securities [Member] | Level 3 [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale	[3]	0	0
Federal Agency Securities [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale		45	43
Federal Agency Securities [Member] | Level 1 [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale		0	0
Federal Agency Securities [Member] | Level 2 [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale		45	43
Federal Agency Securities [Member] | Level 3 [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale	[3]	0	0
Residential Agency [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale		17,441	16,624
Residential Agency [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale		17,441	16,624
Residential Agency [Member] | Level 1 [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale		0	0
Residential Agency [Member] | Level 2 [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale		17,441	16,624
Residential Agency [Member] | Level 3 [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale	[3]	0	0
Residential Non-Agency [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale		2	2
Residential Non-Agency [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale		2	2
Residential Non-Agency [Member] | Level 1 [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale		0	0
Residential Non-Agency [Member] | Level 2 [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale		0	0
Residential Non-Agency [Member] | Level 3 [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale	[3]	2	2
Commercial Agency [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale		4,177	3,835
Commercial Agency [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale		4,177	3,835
Commercial Agency [Member] | Level 1 [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale		0	0
Commercial Agency [Member] | Level 2 [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale		4,177	3,835
Commercial Agency [Member] | Level 3 [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale	[3]	0	0
Commercial Non-Agency [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale		730	760
Commercial Non-Agency [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale		730	760
Commercial Non-Agency [Member] | Level 1 [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale		0	0
Commercial Non-Agency [Member] | Level 2 [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale		730	760
Commercial Non-Agency [Member] | Level 3 [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale	[3]	0	0
Corporate and other debt securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale		1,217	1,185
Corporate and other debt securities [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale		1,217	1,185
Corporate and other debt securities [Member] | Level 1 [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale		0	0
Corporate and other debt securities [Member] | Level 2 [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale		1,211	1,182
Corporate and other debt securities [Member] | Level 3 [Member] | Recurring Fair Value Measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale	[3]	$ 6	$ 3
[1]	As of both March 31, 2019 and December 31, 2018, financial instruments posted of $24 million were not offset in the consolidated balance sheets.
[2]	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. There is no fair value presented for contracts that are characterized as settled daily.
[3]	All following disclosures related to Level 3 recurring and non-recurring assets do not include those deemed to be immaterial.

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) - Residential Mortgage Servicing Rights [Member] - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2019	Mar. 31, 2018
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Opening balance		$ 418	$ 336
Gain (Loss) Included in Earnings	[1]	(39)	12
Gain (Loss) Included in Other Comprehensive Income (Loss)		7	0
Purchases		0	8
Sales		0	0
Issuances		0	0
Settlements		0	0
Transfers Into Level 3		0	0
Transfers Out Of Level 3		0	0
Closing balance		$ 386	$ 356
[1]	Included in mortgage income.

Fair Value Measurements (Sche_2

Fair Value Measurements (Schedule Of Fair Value Adjustments Related To Non-Recurring Fair Value Measurements) (Details) - Nonrecurring Fair Value Measurements [Member] - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Loans Held For Sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Adjustment	$ (2)	$ (3)
Foreclosed Property And Other Real Estate [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Adjustment	$ (8)	$ (5)

Fair Value Measurements (Summar

Fair Value Measurements (Summary Of Quantitative Information About Level 3 Fair Value Measurements) (Details) - Mortgage Servicing Rights [Member] - Discounted Cash Flow [Member] $ in Millions	3 Months Ended
	Mar. 31, 2019USD ($)	[1]	Dec. 31, 2018USD ($)	[2]
Level 3 [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Assets, Fair Value Disclosure	$ 386		$ 418
Recurring Fair Value Measurements [Member] | Minimum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Weighted Average CPR	0.046		0.044
Option-Adjusted Spread	5.70%		5.70%
Recurring Fair Value Measurements [Member] | Maximum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Weighted Average CPR	0.455		0.426
Option-Adjusted Spread	15.00%		15.00%
Recurring Fair Value Measurements [Member] | Weighted Average [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Weighted Average CPR	0.104		0.090
Option-Adjusted Spread	7.60%		7.60%
[1]	See Note 4 for additional disclosures related to assumptions used in the fair value calculation for residential mortgage servicing rights.
[2]	See Note 7 to the consolidated financial statements of the Annual Report on Form 10-K for the year ended December 31, 2018 for additional disclosures related to assumptions used in the fair value calculation for residential mortgage servicing rights.

Fair Value Measurements (Fair V

Fair Value Measurements (Fair Value Option, Fair Value and Unpaid Principal Balance) (Details) - Mortgage loans held for sale [Member] - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Fair Value, Option, Quantitative Disclosures [Line Items]
Mortgages Held-for-sale, Fair Value Disclosure	$ 284		$ 251
Fair Value Option Mortgages Held For Sale Aggregate Unpaid Principal	274		242
Aggregate Fair Value Less Aggregate Unpaid Principal	10		$ 9
Net gains (losses) resulting from changes in fair value	$ 0	$ (3)

Fair Value Measurements (Sche_3

Fair Value Measurements (Schedule Of Carrying Amounts And Estimated Fair Values Of Financial Instruments) (Details) - USD ($) $ in Millions		Mar. 31, 2019		Dec. 31, 2018
Financial Assets [Abstract]
Debt securities held to maturity		$ 1,454		$ 1,460
Debt securities available for sale		23,786		22,729
Loans held for sale		284		251
Other earning assets		1,617		1,719
Derivative Assets	[1],[2]	206		127
Financial Liabilities [Abstract]
Derivative Liabilities	[1],[2]	88		161
Fair Value Discount On Loan Portfolio Amount		$ 771		$ 1,700
Fair value discount on loan portfolio, rate		0.90%		2.10%
Capital leases, carrying amount excluded		$ 1,200		$ 1,100
Operating leases, carrying amount excluded		349		369
Carrying Amount [Member]
Financial Assets [Abstract]
Cash and cash equivalents		3,807		3,538
Debt securities held to maturity		1,451		1,482
Debt securities available for sale		23,786		22,729
Loans held for sale		318		304
Loans (excluding leases), net of unearned income and allowance for loan losses		82,379	[3],[4]	81,054	[5],[6]
Other earning assets		1,268	[7]	1,350	[8]
Derivative Assets		427		370
Financial Liabilities [Abstract]
Derivative Liabilities		257		340
Deposits		95,720		94,491
Short-term borrowings		1,600		1,600
Long-term borrowings		12,957		12,424
Loan commitments and letters of credit		73		79
Estimate of Fair Value [Member]
Financial Assets [Abstract]
Cash and cash equivalents		3,807	[9]	3,538	[10]
Debt securities held to maturity		1,454	[9]	1,460	[10]
Debt securities available for sale		23,786	[9]	22,729	[10]
Loans held for sale		318	[9]	304	[10]
Loans (excluding leases), net of unearned income and allowance for loan losses		81,608	[3],[4],[9]	79,386	[5],[6],[10]
Other earning assets		1,268	[7],[9]	1,350	[8],[10]
Derivative Assets		427	[9]	370	[10]
Financial Liabilities [Abstract]
Derivative Liabilities		257	[9]	340	[10]
Deposits		95,772	[9]	94,531	[10]
Short-term borrowings		1,600	[9]	1,600	[10]
Long-term borrowings		13,328	[9]	12,610	[10]
Loan commitments and letters of credit		488	[9]	435	[10]
Level 1 [Member]
Financial Assets [Abstract]
Cash and cash equivalents		3,807		3,538
Debt securities held to maturity		0		0
Debt securities available for sale		174		280
Loans held for sale		0		0
Loans (excluding leases), net of unearned income and allowance for loan losses		0	[3],[4]	0	[5],[6]
Other earning assets		348	[7]	429	[8]
Derivative Assets		1		2
Financial Liabilities [Abstract]
Derivative Liabilities		1		2
Deposits		0		0
Short-term borrowings		0		0
Long-term borrowings		0		0
Loan commitments and letters of credit		0		0
Level 2 [Member]
Financial Assets [Abstract]
Cash and cash equivalents		0		0
Debt securities held to maturity		1,454		1,460
Debt securities available for sale		23,604		22,444
Loans held for sale		302		287
Loans (excluding leases), net of unearned income and allowance for loan losses		0	[3],[4]	0	[5],[6]
Other earning assets		920	[7]	921	[8]
Derivative Assets		418		363
Financial Liabilities [Abstract]
Derivative Liabilities		252		335
Deposits		95,772		94,531
Short-term borrowings		1,600		1,600
Long-term borrowings		12,400		12,408
Loan commitments and letters of credit		0		0
Level 3 [Member]
Financial Assets [Abstract]
Cash and cash equivalents		0		0
Debt securities held to maturity		0		0
Debt securities available for sale		8		5
Loans held for sale		16		17
Loans (excluding leases), net of unearned income and allowance for loan losses		81,608	[3],[4]	79,386	[5],[6]
Other earning assets		0	[7]	0	[8]
Derivative Assets		8		5
Financial Liabilities [Abstract]
Derivative Liabilities		4		3
Deposits		0		0
Short-term borrowings		0		0
Long-term borrowings		928		202
Loan commitments and letters of credit		$ 488		$ 435
[1]	As of both March 31, 2019 and December 31, 2018, financial instruments posted of $24 million were not offset in the consolidated balance sheets.
[2]	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. There is no fair value presented for contracts that are characterized as settled daily.
[3]	Excluded from this table is the capital lease carrying amount of $1.2 billion at March 31, 2019.
[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 on the loan portfolio's net carrying amount at March 31, 2019 was $771 million or 0.9 percent.
[5]	Excluded from this table is the capital lease carrying amount of $1.1 billion at December 31, 2018.
[6]	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 on the loan portfolio's net carrying amount at December 31, 2018 was $1.7 billion or 2.1 percent.
[7]	Excluded from this table is the operating lease carrying amount of $349 million at March 31, 2019.
[8]	Excluded from this table is the operating lease carrying amount of $369 million at December 31, 2018.
[9]	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 estimated changes in interest rates, market liquidity and credit spreads in the periods they are deemed to have occurred.
[10]	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 estimated changes in interest rates, market liquidity and credit spreads in the periods they are deemed to have occurred.

Business Segment Information (S

Business Segment Information (Schedule Of Financial Information By Reportable Segment) (Details) $ in Millions	3 Months Ended
	Mar. 31, 2019USD ($)segment	Mar. 31, 2018USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | segment	3
Total non-interest income	$ 502	$ 507
Non-interest expense	860	884
Income from continuing operations before income taxes	499	542
Income tax expense (benefit)	105	128
Corporate Bank [Member]
Segment Reporting Information [Line Items]
Net interest income and other financing income (loss)	358	337
Provision (Credit) for Loan Losses	43	46
Total non-interest income	131	144
Non-interest expense	232	229
Income from continuing operations before income taxes	214	206
Income tax expense (benefit)	53	52
Net income	161	154
Average assets	53,851	51,037
Consumer Bank [Member]
Segment Reporting Information [Line Items]
Net interest income and other financing income (loss)	576	531
Provision (Credit) for Loan Losses	83	77
Total non-interest income	281	277
Non-interest expense	514	517
Income from continuing operations before income taxes	260	214
Income tax expense (benefit)	65	54
Net income	195	160
Average assets	35,401	34,951
Wealth Management [Member]
Segment Reporting Information [Line Items]
Net interest income and other financing income (loss)	47	49
Provision (Credit) for Loan Losses	4	4
Total non-interest income	78	77
Non-interest expense	88	90
Income from continuing operations before income taxes	33	32
Income tax expense (benefit)	8	8
Net income	25	24
Average assets	2,203	2,359
Other [Member]
Segment Reporting Information [Line Items]
Net interest income and other financing income (loss)	(33)	(8)
Provision (Credit) for Loan Losses	(39)	(137)
Total non-interest income	12	9
Non-interest expense	26	48
Income from continuing operations before income taxes	(8)	90
Income tax expense (benefit)	(21)	14
Net income	13	76
Average assets	34,088	34,977
Continuing Operations [Member]
Segment Reporting Information [Line Items]
Net interest income and other financing income (loss)	948	909
Provision (Credit) for Loan Losses	91	(10)
Total non-interest income	502	507
Non-interest expense	860	884
Income from continuing operations before income taxes	499	542
Income tax expense (benefit)	105	128
Net income	394	414
Average assets	125,543	123,324
Discontinued Operations [Member]
Segment Reporting Information [Line Items]
Net interest income and other financing income (loss)	0	0
Provision (Credit) for Loan Losses	0	0
Total non-interest income	0	34
Non-interest expense	0	34
Income from continuing operations before income taxes	0	0
Income tax expense (benefit)	0	0
Net income	0	0
Average assets	0	170
Consolidated [Member]
Segment Reporting Information [Line Items]
Net interest income and other financing income (loss)	948	909
Provision (Credit) for Loan Losses	91	(10)
Total non-interest income	502	541
Non-interest expense	860	918
Income from continuing operations before income taxes	499	542
Income tax expense (benefit)	105	128
Net income	394	414
Average assets	$ 125,543	$ 123,494

Commitments, Contingencies an_3

Commitments, Contingencies and Guarantees (Credit Risk Of Off-Balance Sheet Financial Instruments By Contractual Amounts) (Details) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018	Mar. 31, 2018	Dec. 31, 2017
Other Commitments [Line Items]
Unused commitments to extend credit	$ 51,608	$ 51,406
Standby Letters Of Credit Commitment	1,396	1,428
Commercial letters of credit	124	44
Liabilities associated with standby letters of credit	24	28
Assets associated with standby letters of credit	25	29
Reserve for unfunded credit commitments	$ 50	$ 51	$ 49	$ 53

Commitments, Contingencies an_4

Commitments, Contingencies and Guarantees (Narrative) (Details) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
Loss Contingency, Range of Possible Loss, Portion Not Accrued	$ 20
Long-term Purchase Commitment [Line Items]
Fannie Mae DUS Servicing Portfolio, Amount		$ 3,600
Maximum Quantifiable Fannie Mae DUS Loss Share Guarantee	1,200
Estimated Fair Value of the Fannie Mae DUS Loss Share Guarantee	$ 4	$ 4

Revenue Recognition (Non-Intere

Revenue Recognition (Non-Interest Income Disaggregated by Major Product Category) (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2019	Mar. 31, 2018
Corporate Bank [Member]
Disaggregation of Revenue [Line Items]
Revenue		$ 79	$ 72
Corporate Bank [Member] | Service charges on deposit accounts
Disaggregation of Revenue [Line Items]
Revenue		39	37
Corporate Bank [Member] | Card and ATM fees
Disaggregation of Revenue [Line Items]
Revenue		13	12
Corporate Bank [Member] | Investment management and trust fee income
Disaggregation of Revenue [Line Items]
Revenue		0	0
Corporate Bank [Member] | Capital markets income
Disaggregation of Revenue [Line Items]
Revenue		21	18
Corporate Bank [Member] | Mortgage income
Disaggregation of Revenue [Line Items]
Revenue		0	0
Corporate Bank [Member] | Investment Services Fee Income [Member]
Disaggregation of Revenue [Line Items]
Revenue		0	0
Corporate Bank [Member] | Commercial Credit Fee Income [Member]
Disaggregation of Revenue [Line Items]
Revenue		0	0
Corporate Bank [Member] | Bank-owned life insurance [Member]
Disaggregation of Revenue [Line Items]
Revenue		0	0
Corporate Bank [Member] | Securities gains (losses), net
Disaggregation of Revenue [Line Items]
Revenue		0	0
Corporate Bank [Member] | Market value adjustments on employee benefit assets - defined benefit [Member]
Disaggregation of Revenue [Line Items]
Revenue		0	0
Corporate Bank [Member] | Market value adjustments on employee benefit assets - other [Member]
Disaggregation of Revenue [Line Items]
Revenue		0	0
Corporate Bank [Member] | Insurance commissions and fees [Member]
Disaggregation of Revenue [Line Items]
Revenue			0
Corporate Bank [Member] | Other miscellaneous income [Member]
Disaggregation of Revenue [Line Items]
Revenue		6	5
Consumer Bank [Member]
Disaggregation of Revenue [Line Items]
Revenue		252	236
Consumer Bank [Member] | Service charges on deposit accounts
Disaggregation of Revenue [Line Items]
Revenue		133	131
Consumer Bank [Member] | Card and ATM fees
Disaggregation of Revenue [Line Items]
Revenue		99	96
Consumer Bank [Member] | Investment management and trust fee income
Disaggregation of Revenue [Line Items]
Revenue		0	0
Consumer Bank [Member] | Capital markets income
Disaggregation of Revenue [Line Items]
Revenue		0	0
Consumer Bank [Member] | Mortgage income
Disaggregation of Revenue [Line Items]
Revenue		0	0
Consumer Bank [Member] | Investment Services Fee Income [Member]
Disaggregation of Revenue [Line Items]
Revenue		0	0
Consumer Bank [Member] | Commercial Credit Fee Income [Member]
Disaggregation of Revenue [Line Items]
Revenue		0	0
Consumer Bank [Member] | Bank-owned life insurance [Member]
Disaggregation of Revenue [Line Items]
Revenue		0	0
Consumer Bank [Member] | Securities gains (losses), net
Disaggregation of Revenue [Line Items]
Revenue		0	0
Consumer Bank [Member] | Market value adjustments on employee benefit assets - defined benefit [Member]
Disaggregation of Revenue [Line Items]
Revenue		0	0
Consumer Bank [Member] | Market value adjustments on employee benefit assets - other [Member]
Disaggregation of Revenue [Line Items]
Revenue		0	0
Consumer Bank [Member] | Insurance commissions and fees [Member]
Disaggregation of Revenue [Line Items]
Revenue			0
Consumer Bank [Member] | Other miscellaneous income [Member]
Disaggregation of Revenue [Line Items]
Revenue		20	9
Wealth Management [Member]
Disaggregation of Revenue [Line Items]
Revenue		78	77
Wealth Management [Member] | Service charges on deposit accounts
Disaggregation of Revenue [Line Items]
Revenue		0	1
Wealth Management [Member] | Card and ATM fees
Disaggregation of Revenue [Line Items]
Revenue		0	0
Wealth Management [Member] | Investment management and trust fee income
Disaggregation of Revenue [Line Items]
Revenue		57	58
Wealth Management [Member] | Capital markets income
Disaggregation of Revenue [Line Items]
Revenue		0	0
Wealth Management [Member] | Mortgage income
Disaggregation of Revenue [Line Items]
Revenue		0	0
Wealth Management [Member] | Investment Services Fee Income [Member]
Disaggregation of Revenue [Line Items]
Revenue		19	17
Wealth Management [Member] | Commercial Credit Fee Income [Member]
Disaggregation of Revenue [Line Items]
Revenue		0	0
Wealth Management [Member] | Bank-owned life insurance [Member]
Disaggregation of Revenue [Line Items]
Revenue		0	0
Wealth Management [Member] | Securities gains (losses), net
Disaggregation of Revenue [Line Items]
Revenue		0	0
Wealth Management [Member] | Market value adjustments on employee benefit assets - defined benefit [Member]
Disaggregation of Revenue [Line Items]
Revenue		0	0
Wealth Management [Member] | Market value adjustments on employee benefit assets - other [Member]
Disaggregation of Revenue [Line Items]
Revenue		0	0
Wealth Management [Member] | Insurance commissions and fees [Member]
Disaggregation of Revenue [Line Items]
Revenue			0
Wealth Management [Member] | Other miscellaneous income [Member]
Disaggregation of Revenue [Line Items]
Revenue		2	1
Other Segment Revenue [Member]
Disaggregation of Revenue [Line Items]
Revenue		(4)	1
Other Segment Revenue [Member] | Service charges on deposit accounts
Disaggregation of Revenue [Line Items]
Revenue		1	1
Other Segment Revenue [Member] | Card and ATM fees
Disaggregation of Revenue [Line Items]
Revenue		1	0
Other Segment Revenue [Member] | Investment management and trust fee income
Disaggregation of Revenue [Line Items]
Revenue		0	0
Other Segment Revenue [Member] | Capital markets income
Disaggregation of Revenue [Line Items]
Revenue		0	0
Other Segment Revenue [Member] | Mortgage income
Disaggregation of Revenue [Line Items]
Revenue		0	0
Other Segment Revenue [Member] | Investment Services Fee Income [Member]
Disaggregation of Revenue [Line Items]
Revenue		0	0
Other Segment Revenue [Member] | Commercial Credit Fee Income [Member]
Disaggregation of Revenue [Line Items]
Revenue		0	0
Other Segment Revenue [Member] | Bank-owned life insurance [Member]
Disaggregation of Revenue [Line Items]
Revenue		0	0
Other Segment Revenue [Member] | Securities gains (losses), net
Disaggregation of Revenue [Line Items]
Revenue		0	0
Other Segment Revenue [Member] | Market value adjustments on employee benefit assets - defined benefit [Member]
Disaggregation of Revenue [Line Items]
Revenue		0	0
Other Segment Revenue [Member] | Market value adjustments on employee benefit assets - other [Member]
Disaggregation of Revenue [Line Items]
Revenue		0	0
Other Segment Revenue [Member] | Insurance commissions and fees [Member]
Disaggregation of Revenue [Line Items]
Revenue			0
Other Segment Revenue [Member] | Other miscellaneous income [Member]
Disaggregation of Revenue [Line Items]
Revenue		(6)	0
Other Revenue - Not Impacted [Member]
Disaggregation of Revenue [Line Items]
Revenue	[1]	97	121
Other Revenue - Not Impacted [Member] | Service charges on deposit accounts
Disaggregation of Revenue [Line Items]
Revenue	[1]	2	1
Other Revenue - Not Impacted [Member] | Card and ATM fees
Disaggregation of Revenue [Line Items]
Revenue	[1]	(4)	(4)
Other Revenue - Not Impacted [Member] | Investment management and trust fee income
Disaggregation of Revenue [Line Items]
Revenue	[1]	0	0
Other Revenue - Not Impacted [Member] | Capital markets income
Disaggregation of Revenue [Line Items]
Revenue	[1]	21	32
Other Revenue - Not Impacted [Member] | Mortgage income
Disaggregation of Revenue [Line Items]
Revenue	[1]	27	38
Other Revenue - Not Impacted [Member] | Investment Services Fee Income [Member]
Disaggregation of Revenue [Line Items]
Revenue	[1]	0	0
Other Revenue - Not Impacted [Member] | Commercial Credit Fee Income [Member]
Disaggregation of Revenue [Line Items]
Revenue	[1]	18	17
Other Revenue - Not Impacted [Member] | Bank-owned life insurance [Member]
Disaggregation of Revenue [Line Items]
Revenue	[1]	23	17
Other Revenue - Not Impacted [Member] | Securities gains (losses), net
Disaggregation of Revenue [Line Items]
Revenue	[1]	(7)	0
Other Revenue - Not Impacted [Member] | Market value adjustments on employee benefit assets - defined benefit [Member]
Disaggregation of Revenue [Line Items]
Revenue	[1]	5	(1)
Other Revenue - Not Impacted [Member] | Market value adjustments on employee benefit assets - other [Member]
Disaggregation of Revenue [Line Items]
Revenue	[1]	(1)	0
Other Revenue - Not Impacted [Member] | Insurance commissions and fees [Member]
Disaggregation of Revenue [Line Items]
Revenue	[1]		0
Other Revenue - Not Impacted [Member] | Other miscellaneous income [Member]
Disaggregation of Revenue [Line Items]
Revenue	[1]	13	21
Continuing Operations [Member]
Disaggregation of Revenue [Line Items]
Revenue		502	507
Continuing Operations [Member] | Service charges on deposit accounts
Disaggregation of Revenue [Line Items]
Revenue		175	171
Continuing Operations [Member] | Card and ATM fees
Disaggregation of Revenue [Line Items]
Revenue		109	104
Continuing Operations [Member] | Investment management and trust fee income
Disaggregation of Revenue [Line Items]
Revenue		57	58
Continuing Operations [Member] | Capital markets income
Disaggregation of Revenue [Line Items]
Revenue		42	50
Continuing Operations [Member] | Mortgage income
Disaggregation of Revenue [Line Items]
Revenue		27	38
Continuing Operations [Member] | Investment Services Fee Income [Member]
Disaggregation of Revenue [Line Items]
Revenue		19	17
Continuing Operations [Member] | Commercial Credit Fee Income [Member]
Disaggregation of Revenue [Line Items]
Revenue		18	17
Continuing Operations [Member] | Bank-owned life insurance [Member]
Disaggregation of Revenue [Line Items]
Revenue		23	17
Continuing Operations [Member] | Securities gains (losses), net
Disaggregation of Revenue [Line Items]
Revenue		(7)	0
Continuing Operations [Member] | Market value adjustments on employee benefit assets - defined benefit [Member]
Disaggregation of Revenue [Line Items]
Revenue		5	(1)
Continuing Operations [Member] | Market value adjustments on employee benefit assets - other [Member]
Disaggregation of Revenue [Line Items]
Revenue		(1)	0
Continuing Operations [Member] | Insurance commissions and fees [Member]
Disaggregation of Revenue [Line Items]
Revenue			0
Continuing Operations [Member] | Other miscellaneous income [Member]
Disaggregation of Revenue [Line Items]
Revenue		35	36
Discontinued Operations [Member]
Disaggregation of Revenue [Line Items]
Revenue		0	34
Discontinued Operations [Member] | Service charges on deposit accounts
Disaggregation of Revenue [Line Items]
Revenue		0	0
Discontinued Operations [Member] | Card and ATM fees
Disaggregation of Revenue [Line Items]
Revenue		0	0
Discontinued Operations [Member] | Investment management and trust fee income
Disaggregation of Revenue [Line Items]
Revenue		0	0
Discontinued Operations [Member] | Capital markets income
Disaggregation of Revenue [Line Items]
Revenue		0	0
Discontinued Operations [Member] | Mortgage income
Disaggregation of Revenue [Line Items]
Revenue		0	0
Discontinued Operations [Member] | Investment Services Fee Income [Member]
Disaggregation of Revenue [Line Items]
Revenue		0	0
Discontinued Operations [Member] | Commercial Credit Fee Income [Member]
Disaggregation of Revenue [Line Items]
Revenue		0	0
Discontinued Operations [Member] | Bank-owned life insurance [Member]
Disaggregation of Revenue [Line Items]
Revenue		0	0
Discontinued Operations [Member] | Securities gains (losses), net
Disaggregation of Revenue [Line Items]
Revenue		0	0
Discontinued Operations [Member] | Market value adjustments on employee benefit assets - defined benefit [Member]
Disaggregation of Revenue [Line Items]
Revenue		0	0
Discontinued Operations [Member] | Market value adjustments on employee benefit assets - other [Member]
Disaggregation of Revenue [Line Items]
Revenue		0	0
Discontinued Operations [Member] | Insurance commissions and fees [Member]
Disaggregation of Revenue [Line Items]
Revenue			34
Discontinued Operations [Member] | Other miscellaneous income [Member]
Disaggregation of Revenue [Line Items]
Revenue		$ 0	$ 0
[1]	This revenue is not impacted by the accounting guidance related to revenue from contracts with customers and continues to be recognized when earned in accordance with the Company's existing revenue recognition policy.

Recent Accounting Pronounceme_2

Recent Accounting Pronouncements (Narrative) (Details) - USD ($) $ in Millions	Mar. 31, 2019	Jan. 01, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating Lease, Right-of-Use Asset	$ 430	$ 451
Operating Lease, Liability	$ 511	$ 451