Comerica (CMA) 10-Q 30 Oct 23 2023 Q3 Quarterly report Financial data

Cover

Cover - shares	9 Months Ended
	Sep. 30, 2023	Oct. 26, 2023
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2023
Document Transition Report	false
Entity File Number	1-10706
Entity Registrant Name	Comerica Incorporated
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	38-1998421
Entity Address, Address Line One	1717 Main Street, MC 6404
Entity Address, City or Town	Dallas
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	75201
City Area Code	(214)
Local Phone Number	462-6831
Title of 12(b) Security	Common Stock, $5 par value
Trading Symbol	CMA
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		131,872,812
Entity Central Index Key	0000028412
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	Q3
Amendment Flag	false

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
ASSETS
Cash and due from banks	$ 1,228	$ 1,758
Interest-bearing deposits with banks	6,884	4,524
Other short-term investments	403	157
Investment securities available-for-sale	16,323	19,012
Commercial loans	29,007	30,909
Real estate construction loans	4,545	3,105
Commercial mortgage loans	13,721	13,306
Lease financing	790	760
International loans	1,194	1,197
Residential mortgage loans	1,905	1,814
Consumer loans	2,236	2,311
Total loans	53,398	53,402
Allowance for loan losses	(694)	(610)
Net loans	52,704	52,792
Premises and equipment	410	400
Accrued income and other assets	7,754	6,763
Total assets	85,706	85,406
LIABILITIES AND SHAREHOLDERS’ EQUITY
Noninterest-bearing deposits	29,922	39,945
Money market and interest-bearing checking deposits	26,298	26,290
Savings deposits	2,521	3,225
Customer certificates of deposit	3,401	1,762
Other time deposits	5,011	124
Foreign office time deposits	5	51
Total interest-bearing deposits	37,236	31,452
Total deposits	67,158	71,397
Short-term borrowings	4,812	3,211
Accrued expenses and other liabilities	2,715	2,593
Medium- and long-term debt	6,049	3,024
Total liabilities	80,734	80,225
Fixed rate reset non-cumulative perpetual preferred stock, series A, no par value, $100,000, liquidation preference per share: Issued - 4,000 shares	394	394
Common stock - $5 par value: Issued - 228,164,824 shares	1,141	1,141
Capital surplus	2,220	2,220
Accumulated other comprehensive loss	(4,540)	(3,742)
Retained earnings	11,796	11,258
Less cost of common stock in treasury - 96,374,736 shares at 9/30/2023 and 97,197,962 shares at 12/31/2022	(6,039)	(6,090)
Total shareholders’ equity	4,972	5,181
Total liabilities and shareholders’ equity	$ 85,706	$ 85,406

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Sep. 30, 2023	Dec. 31, 2022
Statement of Financial Position [Abstract]
Preferred stock, no par value (in dollars per share)	$ 0	$ 0
Preferred stock, liquidation preference (in dollars per share)	$ 100,000	$ 100,000
Preferred stock, authorized (in shares)	4,000	4,000
Preferred stock, issued (in shares)	4,000	4,000
Common stock, par value (usd per share)	$ 5	$ 5
Common stock, authorized (in shares)	325,000,000	325,000,000
Common stock, issued (in shares)	228,164,824	228,164,824
Common stock, treasury (in shares)	96,374,736	97,197,962

Consolidated Statements Of Comp

Consolidated Statements Of Comprehensive Income (unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
INTEREST INCOME
Interest and fees on loans	$ 862	$ 597	$ 2,491	$ 1,434
Interest on investment securities	105	119	326	296
Interest on short-term investments	136	34	309	66
Total interest income	1,103	750	3,126	1,796
INTEREST EXPENSE
Interest on deposits	271	16	590	24
Interest on short-term borrowings	125	1	333	1
Interest on medium- and long-term debt	106	26	273	47
Total interest expense	502	43	1,196	72
Net interest income	601	707	1,930	1,724
Provision for credit losses	14	28	77	27
Net interest income after provision for credit losses	587	679	1,853	1,697
NONINTEREST INCOME
Card fees	71	67	212	205
Fiduciary income	59	58	179	178
Service charges on deposit accounts	47	50	140	148
Capital markets income	35	48	113	120
Commercial lending fees	19	17	55	50
Bank-owned life insurance	12	12	36	37
Letter of credit fees	10	10	31	28
Brokerage fees	6	6	22	14
Other noninterest income	36	10	92	10
Total noninterest income	295	278	880	790
NONINTEREST EXPENSES
Salaries and benefits expense	315	307	947	890
Outside processing fee expense	75	64	207	188
Software expense	44	40	127	120
Occupancy expense	44	44	126	122
FDIC Insurance expense	19	8	48	24
Equipment expense	12	12	36	36
Advertising expense	12	9	30	24
Other noninterest expenses	34	18	120	53
Total noninterest expenses	555	502	1,641	1,457
Income before income taxes	327	455	1,092	1,030
Provision for income taxes	76	104	244	229
NET INCOME	251	351	848	801
Less:
Income allocated to participating securities	1	2	4	4
Preferred stock dividends	6	6	17	17
Net income attributable to common shares	$ 244	$ 343	$ 827	$ 780
Earnings per common share:
Basic (in dollars per share)	$ 1.85	$ 2.63	$ 6.27	$ 5.96
Diluted (in dollars per share)	$ 1.84	$ 2.60	$ 6.24	$ 5.88
Comprehensive (loss) income	$ (533)	$ (1,282)	$ 50	$ (2,574)
Cash dividends declared on common stock	$ 94	$ 89	$ 282	$ 267
Cash dividends declared per common share (in dollars per share)	$ 0.71	$ 0.68	$ 2.13	$ 2.04

Consolidated Statements Of Chan

Consolidated Statements Of Changes In Shareholders' Equity (unaudited) - USD ($) shares in Millions, $ in Millions	Total	Nonredeemable Preferred Stock	Common Stock	Capital Surplus	Accumulated Other Comprehensive Loss	Retained Earnings	Treasury Stock
Beginning balance at Dec. 31, 2021	$ 7,897	$ 394	$ 1,141	$ 2,175	$ (212)	$ 10,494	$ (6,095)
Beginning balance (in shares) at Dec. 31, 2021			130.7
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	801					801
Other comprehensive income (loss), net of tax	(3,375)				(3,375)
Cash dividends declared on common stock ($0.68 per share, $0.71 per share, $1.36 per share and $1.42 per share)	(267)					(267)
Cash dividends declared on preferred stock	(17)					(17)
Purchase of common stock (in shares)			(0.4)
Purchase of common stock	(36)						(36)
Net issuance of common stock under employee stock plans (in shares)			0.6
Net issuance of common stock under employee stock plans	18			(14)		(6)	38
Share-based compensation	48			48
Ending balance at Sep. 30, 2022	5,069	394	$ 1,141	2,209	(3,587)	11,005	(6,093)
Ending balance (in shares) at Sep. 30, 2022			130.9
Beginning balance at Jun. 30, 2022	6,435	394	$ 1,141	2,204	(1,954)	10,752	(6,102)
Beginning balance (in shares) at Jun. 30, 2022			130.8
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	351					351
Other comprehensive income (loss), net of tax	(1,633)				(1,633)
Cash dividends declared on common stock ($0.68 per share, $0.71 per share, $1.36 per share and $1.42 per share)	(89)					(89)
Cash dividends declared on preferred stock	(6)					(6)
Net issuance of common stock under employee stock plans (in shares)			0.1
Net issuance of common stock under employee stock plans	2			(4)		(3)	9
Share-based compensation	9			9
Ending balance at Sep. 30, 2022	5,069	394	$ 1,141	2,209	(3,587)	11,005	(6,093)
Ending balance (in shares) at Sep. 30, 2022			130.9
Beginning balance at Dec. 31, 2022	5,181	394	$ 1,141	2,220	(3,742)	11,258	(6,090)
Beginning balance (in shares) at Dec. 31, 2022			131
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	848					848
Other comprehensive income (loss), net of tax	(798)				(798)
Cash dividends declared on common stock ($0.68 per share, $0.71 per share, $1.36 per share and $1.42 per share)	(282)					(282)
Cash dividends declared on preferred stock	(17)					(17)
Net issuance of common stock under employee stock plans (in shares)			0.8
Net issuance of common stock under employee stock plans	(4)			(44)		(11)	51
Share-based compensation	44			44
Ending balance at Sep. 30, 2023	4,972	394	$ 1,141	2,220	(4,540)	11,796	(6,039)
Ending balance (in shares) at Sep. 30, 2023			131.8
Beginning balance at Jun. 30, 2023	5,595	394	$ 1,141	2,212	(3,756)	11,648	(6,044)
Beginning balance (in shares) at Jun. 30, 2023			131.7
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	251					251
Other comprehensive income (loss), net of tax	(784)				(784)
Cash dividends declared on common stock ($0.68 per share, $0.71 per share, $1.36 per share and $1.42 per share)	(94)					(94)
Cash dividends declared on preferred stock	(6)					(6)
Net issuance of common stock under employee stock plans (in shares)			0.1
Net issuance of common stock under employee stock plans	1			(1)		(3)	5
Share-based compensation	9			9
Ending balance at Sep. 30, 2023	$ 4,972	$ 394	$ 1,141	$ 2,220	$ (4,540)	$ 11,796	$ (6,039)
Ending balance (in shares) at Sep. 30, 2023			131.8

Consolidated Statements Of Ch_2

Consolidated Statements Of Changes In Shareholders' Equity (unaudited) (Parenthetical) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Statement of Stockholders' Equity [Abstract]
Cash dividends declared (in dollars per share)	$ 0.71	$ 0.68	$ 2.13	$ 2.04

Consolidated Statements Of Cash

Consolidated Statements Of Cash Flows (unaudited) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
OPERATING ACTIVITIES
Net income	$ 848	$ 801
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit losses	77	27
Benefit for deferred income taxes	(25)	(31)
Depreciation and amortization	64	71
Net periodic defined benefit credit	(20)	(68)
Share-based compensation expense	44	48
Net amortization of securities	15	24
Net gains on sales of foreclosed property and other bank property	(22)	(2)
Accrued income receivable	(70)	(95)
Accrued expenses payable	134	18
Other, net	(916)	(752)
Net cash provided by operating activities	129	41
INVESTING ACTIVITIES
Maturities and redemptions	2,061	2,003
Purchases	0	(7,470)
Net change in loans	(15)	(3,013)
Proceeds from sales of foreclosed property and other bank property	27	3
Net increase in premises and equipment	(93)	(58)
Purchases	(504)	(21)
Redemptions	274	0
Proceeds from bank-owned life insurance settlements	27	28
Other, net	2	0
Net cash provided by (used in) investing activities	1,779	(8,528)
FINANCING ACTIVITIES
Deposits	(4,529)	(8,931)
Short-term borrowings	1,601	508
Maturities and redemptions	(850)	0
Issuances and advances	4,000	500
Cash dividends paid on preferred stock	(17)	(17)
Repurchases	(16)	(43)
Cash dividends paid	(274)	(266)
Issuances under employee stock plans	9	27
Other, net	(2)	0
Net cash used in financing activities	(78)	(8,222)
Net increase (decrease) in cash and cash equivalents	1,830	(16,709)
Cash and cash equivalents at beginning of period	6,282	22,679
Cash and cash equivalents at end of period	8,112	5,970
Interest paid	1,005	55
Income taxes paid	$ 255	$ 182

Basis of Presentation and Accou

Basis of Presentation and Accounting Policies	9 Months Ended
	Sep. 30, 2023
Accounting Policies [Abstract]
Basis of Presentation and Accounting Policies	BASIS OF PRESENTATION AND ACCOUNTING POLICIES Organization The accompanying unaudited consolidated financial statements were prepared in accordance with United States (U.S.) generally accepted accounting principles (GAAP) for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, the statements do not include all of the information and footnotes required by GAAP for complete financial statements. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation were included. The results of operations for the nine months ended September 30, 2023 are not necessarily indicative of the results that may be expected for the year ending December 31, 2023. Certain items in prior periods were reclassified to conform to the current presentation. For further information, refer to the consolidated financial statements and footnotes thereto included in the Annual Report on Form 10-K of Comerica Incorporated and Subsidiaries (the Corporation) for the year ended December 31, 2022 (2022 Annual Report). Loans Effective January 1, 2023, the Corporation adopted the provisions of Accounting Standards Update (ASU) No. 2022-02, "Financial Instruments - Credit Losses (Topic 326): Troubled Debt Restructurings and Vintage Disclosures" (ASU 2022-02), which eliminated the accounting for troubled debt restructurings (TDRs) while expanding loan modification and vintage disclosure requirements. Under ASU 2022-02, the Corporation assesses all loan modifications to determine whether one is granted to a borrower experiencing financial difficulty, regardless of whether the modified loan terms include a concession. Modifications granted to borrowers experiencing financial difficulty may be in the form of an interest rate reduction, an other-than-insignificant payment delay, a term extension, principal forgiveness or a combination thereof (collectively referred to as Financially Distressed Modifications or FDMs). Prior to the adoption of ASU 2022-02, a TDR occurred when a loan to a borrower experiencing financial difficulty was restructured with a concession provided that a creditor would not otherwise consider. For the Corporation's accounting policy related to TDRs granted prior to the adoption of ASU 2022-02, refer to the consolidated financial statements and footnotes thereto included in the 2022 Annual Report. The Corporation adopted ASU 2022-02 on a prospective basis. There was no financial statement impact from the adoption of this ASU. Refer to Note 4 for further information. Recently Issued Accounting Pronouncements In March 2023, the Financial Accounting Standards Board (FASB) issued ASU No. 2023-02 "Investments-Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method (a consensus of the Emerging Issues Task Force)" (ASU 2023-02). ASU 2023-02 expands the permitted use of the proportional amortization method, which is currently only available to low-income housing tax credit investments, to other tax equity investments if certain conditions are met. Under the proportional amortization method, the initial cost of an investment is amortized in proportion to the income tax benefits received and both the amortization of the investment and the income tax benefits received are recognized as a component of income tax expense. This ASU is effective on January 1, 2024 and may be applied on either a modified retrospective or retrospective basis or, for certain changes, on a prospective basis. Early adoption is permitted. This ASU is not expected to have a material impact on the Corporation's financial statements.

Fair Value Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2023
Fair Value Disclosures [Abstract]
Fair Value Measurements	FAIR VALUE MEASUREMENTS The Corporation utilizes fair value measurements to record fair value adjustments to certain assets and liabilities and to determine fair value disclosures. The determination of fair values of financial instruments often requires the use of estimates. In cases where quoted market values in an active market are not available, the Corporation uses present value techniques and other valuation methods to estimate the fair values of its financial instruments. These valuation methods require considerable judgment and the resulting estimates of fair value can be significantly affected by the assumptions made and methods used. Investment securities available-for-sale, derivatives, deferred compensation plans and equity securities with readily determinable fair values (primarily money market mutual funds) are recorded at fair value on a recurring basis. Additionally, from time to time, the Corporation may be required to record other assets and liabilities at fair value on a nonrecurring basis, such as impaired loans, other real estate (primarily foreclosed property), nonmarketable equity securities and certain other assets and liabilities. These nonrecurring fair value adjustments typically involve write-downs of individual assets or application of lower of cost or fair value accounting. Refer to Note 1 to the consolidated financial statements in the Corporation's 2022 Annual Report for further information about the fair value hierarchy, descriptions of the valuation methodologies and key inputs used to measure financial assets and liabilities recorded at fair value, as well as a description of the methods and significant assumptions used to estimate fair value disclosures for financial instruments not recorded at fair value in their entirety on a recurring basis. Assets and Liabilities Recorded at Fair Value on a Recurring Basis The following tables present the recorded amount of assets and liabilities measured at fair value on a recurring basis as of September 30, 2023 and December 31, 2022. (in millions) Total Level 1 Level 2 Level 3 September 30, 2023 Deferred compensation plan assets $ 97 $ 97 $ — $ — Equity securities 45 45 — — Investment securities available-for-sale: U.S. Treasury securities 1,681 1,681 — — Residential mortgage-backed securities (a) 10,174 — 10,174 — Commercial mortgage-backed securities (a) 4,468 — 4,468 — Total investment securities available-for-sale 16,323 1,681 14,642 — Derivative assets: Interest rate contracts 303 — 303 — Energy contracts 825 — 825 — Foreign exchange contracts 50 — 50 — Total derivative assets 1,178 — 1,178 — Total assets at fair value $ 17,643 $ 1,823 $ 15,820 $ — Derivative liabilities: Interest rate contracts $ 660 $ — $ 660 $ — Energy contracts 805 — 805 — Foreign exchange contracts 43 — 43 — Other financial derivative liabilities 13 — — 13 Total derivative liabilities 1,521 — 1,508 13 Deferred compensation plan liabilities 97 97 — — Total liabilities at fair value $ 1,618 $ 97 $ 1,508 $ 13 December 31, 2022 Deferred compensation plan assets $ 92 $ 92 $ — $ — Equity securities 44 44 — — Investment securities available-for-sale: U.S. Treasury securities 2,664 2,664 — — Residential mortgage-backed securities (a) 11,655 — 11,655 — Commercial mortgage-backed securities (a) 4,693 — 4,693 — Total investment securities available-for-sale 19,012 2,664 16,348 — Derivative assets: Interest rate contracts 206 — 206 — Energy contracts 1,020 — 1,020 — Foreign exchange contracts 53 — 53 — Total derivative assets 1,279 — 1,279 — Total assets at fair value $ 20,427 $ 2,800 $ 17,627 $ — Derivative liabilities: Interest rate contracts $ 644 $ — $ 644 $ — Energy contracts 1,006 — 1,006 — Foreign exchange contracts 45 — 45 — Other financial derivative liabilities 12 — — 12 Total derivative liabilities 1,707 — 1,695 12 Deferred compensation plan liabilities 92 92 — — Total liabilities at fair value $ 1,799 $ 92 $ 1,695 $ 12 (a) Issued and/or guaranteed by U.S. government agencies or U.S. government-sponsored enterprises. There were no transfers of assets or liabilities recorded at fair value on a recurring basis into or out of Level 3 fair value measurements during each of the three- and nine-month periods ended September 30, 2023 and 2022. The following table summarizes the changes in Level 3 assets and liabilities measured at fair value on a recurring basis for the three- and nine-month periods ended September 30, 2023 and 2022. Net Realized/Unrealized Gains (Losses) (Pretax) Recorded in Earnings (a) (in millions) Balance at Beginning of Period Realized Unrealized Settlements Balance at End of Period Three Months Ended September 30, 2023 Derivative liabilities: Other financial derivative liabilities $ (14) $ — $ 1 $ — $ (13) Three Months Ended September 30, 2022 Derivative liabilities: Other financial derivative liabilities (12) — — — (12) Nine Months Ended September 30, 2023 Derivative liabilities: Other financial derivative liabilities (12) — (1) — (13) Nine Months Ended September 30, 2022 Derivative assets: Interest rate contracts $ 26 $ — $ — $ (26) $ — Derivative liabilities: Other financial derivative liabilities (13) — 1 — (12) (a) Realized and unrealized gains and losses due to changes in fair value are recorded in other noninterest income on the Consolidated Statements of Comprehensive Income. Assets and Liabilities Recorded at Fair Value on a Nonrecurring Basis The Corporation may be required to record certain assets and liabilities at fair value on a nonrecurring basis. These include assets that are recorded at the lower of cost or fair value, and were recognized at fair value since it was less than cost at the end of the period. The following table presents assets recorded at fair value on a nonrecurring basis at September 30, 2023 and December 31, 2022. No liabilities were recorded at fair value on a nonrecurring basis at September 30, 2023 and December 31, 2022. (in millions) Level 3 September 30, 2023 Loans: Commercial $ 27 Real estate construction 2 Commercial mortgage 3 International 2 Total loans 34 Loans held-for-sale 236 Other real estate 5 Total assets at fair value $ 275 December 31, 2022 Loans: Commercial $ 53 Real estate construction 2 Commercial mortgage 11 Total loans 66 Other real estate 9 Total assets at fair value $ 75 Level 3 assets recorded at fair value on a nonrecurring basis at September 30, 2023 and December 31, 2022 included loans with a specific allowance and certain bank property held for sale, both measured based on the fair value of collateral. The unobservable inputs were the additional adjustments applied by management to the appraised values to reflect such factors as non-current appraisals and revisions to estimated time to sell. These adjustments are determined based on qualitative judgments made by management on a case-by-case basis and are not observable inputs, although they are used in the determination of fair value. At September 30, 2023, loans held-for-sale classified as Level 3 represented loans held-for-sale in less liquid markets requiring significant management assumptions when determining fair value. Estimated Fair Values of Financial Instruments Not Recorded at Fair Value on a Recurring Basis The Corporation typically holds the majority of its financial instruments until maturity and thus does not expect to realize many of the estimated fair value amounts disclosed. The disclosures also do not include estimated fair value amounts for items that are not defined as financial instruments, but which have significant value. These include items such as the future earnings potential of significant customer relationships and the value of trust operations and other fee generating businesses. The Corporation believes the imprecision of an estimate could be significant. The carrying amount and estimated fair value of financial instruments not recorded at fair value in their entirety on a recurring basis on the Corporation’s Consolidated Balance Sheets are as follows: Carrying Estimated Fair Value (in millions) Total Level 1 Level 2 Level 3 September 30, 2023 Assets Cash and due from banks $ 1,228 $ 1,228 $ 1,228 $ — $ — Interest-bearing deposits with banks 6,884 6,884 6,884 — — Other short-term investments 24 24 24 — — Loans held-for-sale 2 2 — 2 — Total loans, net of allowance for loan losses (a) 52,704 50,810 — — 50,810 Customers’ liability on acceptances outstanding 1 1 1 — — Restricted equity investments 453 453 453 — — Nonmarketable equity securities (b) 6 12 Liabilities Demand deposits (noninterest-bearing) 29,922 29,922 — 29,922 — Interest-bearing deposits 28,824 28,824 — 28,824 — Customer certificates of deposit 3,401 3,372 — 3,372 — Other time deposits 5,011 5,106 — 5,106 — Total deposits 67,158 67,224 — 67,224 — Short-term borrowings 4,812 4,812 4,812 — — Acceptances outstanding 1 1 1 — — Medium- and long-term debt 6,049 5,781 — 5,781 — Credit-related financial instruments (73) (73) — — (73) December 31, 2022 Assets Cash and due from banks $ 1,758 $ 1,758 $ 1,758 $ — $ — Interest-bearing deposits with banks 4,524 4,524 4,524 — — Other short-term investments 19 19 19 — — Loans held-for-sale 2 2 — 2 — Total loans, net of allowance for loan losses (a) 52,792 50,964 — — 50,964 Customers’ liability on acceptances outstanding 3 3 3 — — Restricted equity investments 223 223 223 — — Nonmarketable equity securities (b) 5 12 Liabilities Demand deposits (noninterest-bearing) 39,945 39,945 — 39,945 — Interest-bearing deposits 29,566 29,566 — 29,566 — Customer certificates of deposit 1,762 1,719 — 1,719 — Other time deposits 124 124 — 124 — Total deposits 71,397 71,354 — 71,354 — Short-term borrowings 3,211 3,211 3,211 — — Acceptances outstanding 3 3 3 — — Medium- and long-term debt 3,024 3,071 — 3,071 — Credit-related financial instruments (79) (79) — — (79) (a) Included $34 million and $66 million of loans recorded at fair value on a nonrecurring basis at September 30, 2023 and December 31, 2022, respectively. (b) Certain investments that are measured at fair value using the net asset value have not been classified in the fair value hierarchy. The fair value amounts presented in the table are intended to permit reconciliation of the fair value hierarchy to the amounts presented in the Consolidated Balance Sheets.

Investment Securities

Investment Securities	9 Months Ended
	Sep. 30, 2023
Investments, Debt and Equity Securities [Abstract]
Investment Securities	INVESTMENT SECURITIES A summary of the Corporation’s investment securities follows: (in millions) Amortized Gross Gross Fair Value September 30, 2023 Investment securities available-for-sale: U.S. Treasury securities $ 1,788 $ — $ 107 $ 1,681 Residential mortgage-backed securities (a) 12,928 — 2,754 10,174 Commercial mortgage-backed securities (a) 5,253 — 785 4,468 Total investment securities available-for-sale $ 19,969 $ — $ 3,646 $ 16,323 December 31, 2022 Investment securities available-for-sale: U.S. Treasury securities $ 2,810 $ — $ 146 $ 2,664 Residential mortgage-backed securities (a) 13,983 — 2,328 11,655 Commercial mortgage-backed securities (a) 5,252 — 559 4,693 Total investment securities available-for-sale $ 22,045 $ — $ 3,033 $ 19,012 (a) Issued and/or guaranteed by U.S. government agencies or U.S. government-sponsored enterprises. A summary of the Corporation’s investment securities in an unrealized loss position as of September 30, 2023 and December 31, 2022 follows: Less than 12 Months 12 Months or more Total (in millions, except securities count) Fair Unrealized Fair Unrealized Fair Unrealized Count September 30, 2023 U.S. Treasury securities $ — $ — $ 1,681 $ 107 $ 1,681 $ 107 20 Residential mortgage-backed securities (a) 15 — 10,159 2,754 10,174 2,754 994 Commercial mortgage-backed securities (a) — — 4,468 785 4,468 785 253 Total temporarily impaired securities $ 15 $ — $ 16,308 $ 3,646 $ 16,323 $ 3,646 1,267 December 31, 2022 U.S. Treasury securities $ 996 $ 5 $ 1,668 $ 141 $ 2,664 $ 146 27 Residential mortgage-backed securities (a) 3,500 361 8,153 1,967 11,653 2,328 1,008 Commercial mortgage-backed securities (a) 4,008 405 685 154 4,693 559 254 Total temporarily impaired securities $ 8,504 $ 771 $ 10,506 $ 2,262 $ 19,010 $ 3,033 1,289 (a) Issued and/or guaranteed by U.S. government agencies or U.S. government-sponsored enterprises. Unrealized losses on investment securities resulted from changes in market interest rates. The Corporation’s portfolio is comprised of securities issued or guaranteed by the U.S. government agencies or government-sponsored enterprises. As such, it is expected that the securities would not be settled at a price less than the amortized cost of the investments. Further, the Corporation does not intend to sell the investments, and it is not more-likely-than-not that it will be required to sell the investments before recovery of amortized costs. No allowance for credit losses was recorded on securities in an unrealized loss position at September 30, 2023 or December 31, 2022. Interest receivable on investment securities totaled $41 million at September 30, 2023 and $49 million at December 31, 2022 and was included in accrued income and other assets on the Consolidated Balance Sheets. Sales, calls and write-downs of investment securities available-for-sale, computed based on the adjusted cost of the specific security, resulted in no gains or losses during the three- and nine-month periods ended September 30, 2023 or September 30, 2022. The following table summarizes the amortized cost and fair values of investment securities by contractual maturity. Securities with multiple maturity dates are classified in the period of final maturity. The actual cash flows of mortgage-backed securities may differ as borrowers of the underlying loans may exercise prepayment options. 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. (in millions) September 30, 2023 Amortized Cost Fair Value Contractual maturity One year or less $ 662 $ 641 After one year through five years 1,380 1,278 After five years through ten years 5,366 4,580 After ten years 12,561 9,824 Total investment securities $ 19,969 $ 16,323 At September 30, 2023, investment securities with a carrying value of $15.8 billion were pledged where permitted or required by law. Pledges included $7.5 billion to the Federal Reserve Bank (FRB) for potential future borrowings, $6.4 billion to the Federal Home Loan Bank (FHLB) as collateral for current advances and potential future borrowings as well as $1.9 billion to secure $536 million of liabilities, consisting of trust deposits, deposits of public entities and state and local government agencies as well as derivative instruments. For information on FHLB borrowings, refer to Note 7.

Credit Quality And Allowance Fo

Credit Quality And Allowance For Credit Losses	9 Months Ended
	Sep. 30, 2023
Credit Loss [Abstract]
Credit Quality And Allowance For Credit Losses	CREDIT QUALITY AND ALLOWANCE FOR CREDIT LOSSES The following table presents an aging analysis of the amortized cost basis of loans. Loans Past Due and Still Accruing (in millions) 30-59 60-89 90 Days Total Nonaccrual Current Total September 30, 2023 Business loans: Commercial $ 51 $ 18 $ 26 $ 95 $ 83 $ 28,829 $ 29,007 Real estate construction: Commercial Real Estate business line (a) 32 — — 32 — 3,983 4,015 Other business lines (b) 26 — — 26 2 502 530 Total real estate construction 58 — — 58 2 4,485 4,545 Commercial mortgage: Commercial Real Estate business line (a) — — — — — 4,832 4,832 Other business lines (b) 43 20 18 81 30 8,778 8,889 Total commercial mortgage 43 20 18 81 30 13,610 13,721 Lease financing 7 — 1 8 — 782 790 International 3 — — 3 3 1,188 1,194 Total business loans 162 38 45 245 118 48,894 49,257 Retail loans: Residential mortgage 7 2 — 9 19 1,877 1,905 Consumer: Home equity 13 2 — 15 17 1,732 1,764 Other consumer 2 — — 2 — 470 472 Total consumer 15 2 — 17 17 2,202 2,236 Total retail loans 22 4 — 26 36 4,079 4,141 Total loans $ 184 $ 42 $ 45 $ 271 $ 154 $ 52,973 $ 53,398 December 31, 2022 Business loans: Commercial $ 238 $ 13 $ 20 $ 271 $ 142 $ 30,496 $ 30,909 Real estate construction: Commercial Real Estate business line (a) — — — — — 2,505 2,505 Other business lines (b) 2 — — 2 3 595 600 Total real estate construction 2 — — 2 3 3,100 3,105 Commercial mortgage: Commercial Real Estate business line (a) — 6 — 6 1 4,674 4,681 Other business lines (b) 64 5 3 72 22 8,531 8,625 Total commercial mortgage 64 11 3 78 23 13,205 13,306 Lease financing 6 — — 6 — 754 760 International — 9 — 9 3 1,185 1,197 Total business loans 310 33 23 366 171 48,740 49,277 Retail loans: Residential mortgage 22 — — 22 53 1,739 1,814 Consumer: Home equity 4 3 — 7 15 1,754 1,776 Other consumer 5 1 — 6 1 528 535 Total consumer 9 4 — 13 16 2,282 2,311 Total retail loans 31 4 — 35 69 4,021 4,125 Total loans $ 341 $ 37 $ 23 $ 401 $ 240 $ 52,761 $ 53,402 (a) Primarily loans to real estate developers. (b) Primarily loans secured by owner-occupied real estate. The following table presents loans by credit quality indicator and vintage year. Credit quality indicator is based on internal risk ratings assigned to each business loan at the time of approval and subjected to subsequent reviews, generally at least annually, and to pools of retail loans with similar risk characteristics. Vintage year is the year of origination or major modification. September 30, 2023 Vintage Year (in millions) 2023 2022 2021 2020 2019 Prior Revolvers Revolvers Converted to Term Total Business loans: Commercial: Pass (a) $ 2,538 $ 3,241 $ 2,584 $ 630 $ 715 $ 1,130 $ 16,668 $ 12 $ 27,518 Criticized (b) 21 142 291 53 93 77 811 1 1,489 Total commercial 2,559 3,383 2,875 683 808 1,207 17,479 13 29,007 Commercial gross charge-offs 1 3 2 1 8 11 3 — 29 Real estate construction Pass (a) 360 1,859 1,513 373 65 49 254 — 4,473 Criticized (b) — 29 34 2 6 — 1 — 72 Total real estate construction 360 1,888 1,547 375 71 49 255 — 4,545 Real estate construction gross charge-offs — — — — — — — — — Commercial mortgage Pass (a) 1,403 3,251 2,287 1,810 1,014 2,518 819 — 13,102 Criticized (b) 1 92 68 11 265 182 — — 619 Total commercial mortgage 1,404 3,343 2,355 1,821 1,279 2,700 819 — 13,721 Commercial mortgage gross charge-offs — — — — 3 — — — 3 Lease financing Pass (a) 142 301 116 52 38 111 — — 760 Criticized (b) 5 8 3 2 7 5 — — 30 Total lease financing 147 309 119 54 45 116 — — 790 Lease financing gross charge-offs — — — — — — — — — International Pass (a) 280 168 101 39 80 5 491 — 1,164 Criticized (b) 7 2 — 1 — 11 9 — 30 Total international 287 170 101 40 80 16 500 — 1,194 International gross charge-offs 2 — — — — — — — 2 Total business loans 4,757 9,093 6,997 2,973 2,283 4,088 19,053 13 49,257 Retail loans: Residential mortgage Pass (a) 245 299 375 455 134 376 — — 1,884 Criticized (b) 2 — 1 — — 18 — — 21 Total residential mortgage 247 299 376 455 134 394 — — 1,905 Residential mortgage gross charge-offs — — — — — — — — — Consumer: Home equity Pass (a) — — — — — 8 1,677 53 1,738 Criticized (b) — — — — — — 24 2 26 Total home equity — — — — — 8 1,701 55 1,764 Home equity gross charge-offs — — — — — — 2 — 2 Other consumer Pass (a) 22 42 26 9 6 7 357 — 469 Criticized (b) — — — — — 3 — — 3 Total other consumer 22 42 26 9 6 10 357 — 472 Other consumer gross charge-offs — — — — 1 — — — 1 Total consumer 22 42 26 9 6 18 2,058 55 2,236 Total retail loans 269 341 402 464 140 412 2,058 55 4,141 Total loans $ 5,026 $ 9,434 $ 7,399 $ 3,437 $ 2,423 $ 4,500 $ 21,111 $ 68 $ 53,398 December 31, 2022 Vintage Year 2022 2021 2020 2019 2018 Prior Revolvers Revolvers Converted to Term Total Business loans: Commercial: Pass (a) $ 3,946 $ 3,509 $ 917 $ 1,041 $ 598 $ 1,030 $ 18,604 $ 9 $ 29,654 Criticized (b) 75 274 81 69 45 78 632 1 1,255 Total commercial 4,021 3,783 998 1,110 643 1,108 19,236 10 30,909 Real estate construction: Pass (a) 836 1,134 633 162 102 28 207 — 3,102 Criticized (b) — — 3 — — — — — 3 Total real estate construction 836 1,134 636 162 102 28 207 — 3,105 Commercial mortgage: Pass (a) 3,349 2,501 1,825 1,394 1,050 2,182 838 — 13,139 Criticized (b) 7 5 7 32 31 75 10 — 167 Total commercial mortgage 3,356 2,506 1,832 1,426 1,081 2,257 848 — 13,306 Lease financing Pass (a) 316 140 64 47 37 130 — — 734 Criticized (b) 10 — 2 8 5 1 — — 26 Total lease financing 326 140 66 55 42 131 — — 760 International Pass (a) 317 161 55 88 19 14 498 — 1,152 Criticized (b) 12 — 3 — 3 10 17 — 45 Total international 329 161 58 88 22 24 515 — 1,197 Total business loans 8,868 7,724 3,590 2,841 1,890 3,548 20,806 10 49,277 Retail loans: Residential mortgage Pass (a) 327 398 480 133 68 355 — — 1,761 Criticized (b) 4 — — 9 1 39 — — 53 Total residential mortgage 331 398 480 142 69 394 — — 1,814 Consumer: Home equity Pass (a) — — — — — 9 1,708 40 1,757 Criticized (b) — — — — — — 17 2 19 Total home equity — — — — — 9 1,725 42 1,776 Other consumer Pass (a) 69 38 50 8 1 10 355 — 531 Criticized (b) — — — 1 — — 3 — 4 Total other consumer 69 38 50 9 1 10 358 — 535 Total consumer 69 38 50 9 1 19 2,083 42 2,311 Total retail loans 400 436 530 151 70 413 2,083 42 4,125 Total loans $ 9,268 $ 8,160 $ 4,120 $ 2,992 $ 1,960 $ 3,961 $ 22,889 $ 52 $ 53,402 (a) Includes all loans not included in the categories of special mention, substandard or nonaccrual. (b) Includes loans with an internal rating of special mention, substandard loans for which the accrual of interest has not been discontinued and nonaccrual loans. Special mention loans have potential credit weaknesses that deserve management’s close attention, such as loans to borrowers who may be experiencing financial difficulties that may result in deterioration of repayment prospects from the borrower at some future date. Accruing substandard loans have a well-defined weakness, or weaknesses, such as loans to borrowers who may be experiencing losses from operations or inadequate liquidity of a degree and duration that jeopardizes the orderly repayment of the loan. Substandard loans are also distinguished by the distinct possibility of loss in the future if these weaknesses are not corrected. Nonaccrual loans are loans for which the accrual of interest has been discontinued. For further information regarding nonaccrual loans, refer to the Nonperforming Assets subheading in Note 1 - Basis of Presentation and Accounting Policies on page F-49 in the Corporation's 2022 Annual Report. These categories are generally consistent with the "special mention" and "substandard" categories as defined by regulatory authorities. A minority of nonaccrual loans are consistent with the "doubtful" category. Loan interest receivable totaled $317 million and $261 million at September 30, 2023 and December 31, 2022, respectively, and was included in accrued income and other assets on the Consolidated Balance Sheets. Allowance for Credit Losses The following table details the changes in the allowance for credit losses. 2023 2022 (in millions) Business Loans Retail Loans Total Business Loans Retail Loans Total Three Months Ended September 30 Balance at beginning of period: Allowance for loan losses $ 614 $ 70 $ 684 $ 502 $ 61 $ 563 Allowance for credit losses on lending-related commitments 34 10 44 34 12 46 Allowance for credit losses 648 80 728 536 73 609 Loan charge-offs (13) (1) (14) (25) (1) (26) Recoveries on loans previously charged-off 7 1 8 12 1 13 Net loan (charge-offs) recoveries (6) — (6) (13) — (13) Provision for credit losses: Provision for loan losses 18 (2) 16 24 2 26 Provision for credit losses on lending-related commitments (1) (1) (2) 2 — 2 Provision for credit losses 17 (3) 14 26 2 28 Balance at end of period: Allowance for loan losses 626 68 694 513 63 576 Allowance for credit losses on lending-related commitments 33 9 42 36 12 48 Allowance for credit losses $ 659 $ 77 $ 736 $ 549 $ 75 $ 624 Nine Months Ended September 30 Balance at beginning of period Allowance for loan losses $ 541 $ 69 $ 610 $ 531 $ 57 $ 588 Allowance for credit losses on lending-related commitments 40 11 51 24 6 30 Allowance for credit losses 581 80 661 555 63 618 Loan charge-offs (34) (3) (37) (55) (2) (57) Recoveries on loans previously charged-off 33 2 35 33 3 36 Net loan (charge-offs) recoveries (1) (1) (2) (22) 1 (21) Provision for credit losses: Provision for loan losses 86 — 86 4 5 9 Provision for credit losses on lending-related commitments (7) (2) (9) 12 6 18 Provision for credit losses 79 (2) 77 16 11 27 Balance at end of period: Allowance for loan losses 626 68 694 513 63 576 Allowance for credit losses on lending-related commitments 33 9 42 36 12 48 Allowance for credit losses $ 659 $ 77 $ 736 $ 549 $ 75 $ 624 Allowance for loan losses as a percentage of total loans 1.27 % 1.62 % 1.30 % 1.07 % 1.58 % 1.11 % Allowance for credit losses as a percentage of total loans 1.34 1.84 1.38 1.15 1.88 1.21 Nonaccrual Loans The following table presents additional information regarding nonaccrual loans. Interest income of $2 million and $3 million was recognized on nonaccrual loans for the three-month periods ended September 30, 2023 and 2022, respectively. For the nine months ended September 30, 2023 and 2022, the Corporation recognized interest income of $8 million and $7 million, respectively, on nonaccrual loans. (in millions) Nonaccrual Loans with No Related Allowance Nonaccrual Loans with Related Allowance Total Nonaccrual Loans September 30, 2023 Business loans: Commercial $ 38 $ 45 $ 83 Real estate construction: Other business lines (a) — 2 2 Commercial mortgage: Other business lines (a) 18 12 30 Total commercial mortgage 18 12 30 International — 3 3 Total business loans 56 62 118 Retail loans: Residential mortgage 19 — 19 Consumer: Home equity 17 — 17 Total retail loans 36 — 36 Total nonaccrual loans $ 92 $ 62 $ 154 December 31, 2022 Business loans: Commercial $ 64 $ 78 $ 142 Real estate construction: Other business lines (a) — 3 3 Commercial mortgage: Commercial Real Estate business line (b) — 1 1 Other business lines (a) 4 18 22 Total commercial mortgage 4 19 23 International 3 — 3 Total business loans 71 100 171 Retail loans: Residential mortgage 53 — 53 Consumer: Home equity 15 — 15 Other consumer 1 — 1 Total consumer 16 — 16 Total retail loans 69 — 69 Total nonaccrual loans $ 140 $ 100 $ 240 (a) Primarily loans secured by owner-occupied real estate. (b) Primarily loans to real estate developers. Foreclosed Properties Foreclosed properties were insignificant at both September 30, 2023 and December 31, 2022. Retail loans secured by residential real estate properties in process of foreclosure included in nonaccrual loans were insignificant at both September 30, 2023 and December 31, 2022. Loan Modifications Made to Borrowers Experiencing Financial Difficulty Effective January 1, 2023, the Corporation adopted the provisions of ASU 2022-02, which eliminated the accounting for TDRs while expanding loan modification and vintage disclosure requirements. The update specifically required additional disclosures on loan modifications to borrowers experiencing financial difficulties that involved an interest rate reduction, other-than-insignificant payment delay, a term extension, principal forgiveness or a combination thereof. The following table displays the amortized cost basis at September 30, 2023 of loan modifications made to borrowers experiencing financial difficulty that were restructured during the three- and nine-month periods ended September 30, 2023 by type of modification. (in millions) Term Extension (a) Payment Delay (a) Interest Rate Reduction Combinations (b) Total Percent of Total Class Three Months Ended September 30, 2023 Business loans: Commercial $ 54 $ — $ 4 $ — $ 58 0.20 % Real estate construction: Other business lines (c) 8 — — — 8 1.44 Total real estate construction 8 — — — 8 0.17 Commercial mortgage: Other business lines (d) 1 — — 6 7 0.08 Total commercial mortgage 1 — — 6 7 0.05 Total business loans 63 — 4 6 73 0.15 Retail loans: Consumer: Home equity — — 1 1 2 0.11 Total consumer — — 1 1 2 0.09 Total retail loans — — 1 1 2 0.05 Total loans $ 63 $ — $ 5 $ 7 $ 75 0.14 % Nine Months Ended September 30, 2023 Business loans: Commercial $ 87 $ 21 $ 4 $ 1 $ 113 0.39 % Real estate construction: Other business lines (c) 8 — — — 8 1.44 Total real estate construction 8 — — — 8 0.17 Commercial mortgage: Other business lines (d) 4 — 1 11 16 0.18 Total commercial mortgage 4 — 1 11 16 0.12 Total business loans 99 21 5 12 137 0.28 Retail loans: Consumer: Home equity 1 — 1 1 3 0.15 Total consumer 1 — 1 1 3 0.13 Total retail loans 1 — 1 1 3 0.07 Total loans $ 100 $ 21 $ 6 $ 13 $ 140 0.26 % (a) Represents loan balances where terms were extended or payments were delayed by a more than an insignificant time period, typically more than 180 days, at or above contractual interest rates. See Note 1 to the consolidated financial statements for further information. (b) Relates to FDMs where more than one type of modification was made. For the three- and nine-month periods ended September 30, 2023, this primarily related to a modification where the interest rate was reduced and the term was extended. (c) Primarily loans to real estate developers. (d) Primarily loans secured by owner-occupied real estate. There were no commitments to lend additional funds to borrowers experiencing financial difficulty whose terms had been restructured at September 30, 2023. The following table summarizes the financial impacts of loan modifications made to specific loans during the three- and nine-month periods ended September 30, 2023. Weighted-Average Term Extension Weighted-Average Interest Rate Reduction Three Months Ended September 30, 2023 Business loans: Commercial 7.4 (0.50) % Real estate construction: Other business lines (a) 6.0 — Total real estate construction 6.0 — Commercial mortgage: Other business lines (b) 8.7 (1.00) Total commercial mortgage 8.7 (1.00) Total business loans 7.4 (0.81) Retail loans: Consumer: Home equity 131.1 (2.85) Total consumer 131.1 (2.85) Total retail loans 131.1 (2.85) Total loans 9.2 (1.09) % Nine Months Ended September 30, 2023 Business loans: Commercial 8.0 (0.49) % Real estate construction: Other business lines (a) 6.0 — Total real estate construction 6.0 — Commercial mortgage: Other business lines (b) 22.0 (0.79) Total commercial mortgage 22.0 (0.79) Total business loans 9.7 (0.70) Retail loans: Consumer: Home equity 129.0 (2.64) Total consumer 129.0 (2.64) Total retail loans 129.0 (2.64) Total loans 11.0 (0.89) % (a) Primarily loans to real estate developers. (b) Primarily loans secured by owner-occupied real estate. During the three months ended September 30, 2023, there were no significant modifications to borrowers experiencing financial difficulty involving an other-than-insignificant payment delay. During the nine months ended September 30, 2023, mo difications to borrowers experiencing financial difficulty included restructurings with other-than-insignificant payment delays of $5 million in the Commercial loan category. On an ongoing basis, the Corporation monitors the performance of modified loans related to their restructured terms. Loans restructured during the nine months ended September 30, 2023 were current under modified terms at September 30, 2023. Nonperforming restructured loans are classified as nonaccrual loans and are individually evaluated in the allowance for loan losses. For restructured loans, a subsequent payment default is defined in terms of delinquency, when a principal or interest payment is 90 days past due or classified into nonaccrual status during the reporting period. Of the loans restructured during the three- and nine-month periods ended September 30, 2023 (since adoption of ASU 2022-02), there were no subsequent defaults as of September 30, 2023. Troubled Debt Restructurings Prior to the Adoption of ASU 2022-02 The following table details the amortized cost basis at September 30, 2022 of loans considered to be TDRs that were restructured during the three- and nine-month periods ended September 30, 2022 by type of modification. In cases of loans with more than one type of modification, the loans were categorized based on the most significant modification. Type of Modification (in millions) Principal Deferrals (a) Interest Rate Reductions Total Modifications Three Months Ended September 30, 2022 Business loans: Commercial $ 27 $ — $ 27 Commercial mortgage: Other business lines (b) 7 — 7 Total business loans 34 — 34 Retail loans: Residential mortgage — 5 5 Total loans $ 34 $ 5 $ 39 Nine Months Ended September 30, 2022 Business loans: Commercial $ 34 $ — $ 34 Real estate construction: Other business lines (b) 3 — 3 Commercial mortgage: Other business lines (b) 15 — 15 Total business loans 52 — 52 Retail loans: Residential mortgage — 5 5 Consumer: Home equity (c) 1 — 1 Total loans $ 53 $ 5 $ 58 (a) Primarily represents loan balances where terms were extended by more than an insignificant time period, typically more than 180 days, at or above contractual interest rates. Also includes commercial loans restructured in bankruptcy. (b) Primarily loans secured by owner-occupied real estate. (c) Includes bankruptcy loans for which the court has discharged the borrower's obligation and the borrower has not reaffirmed the debt. The Corporation charges interest on principal balances outstanding during deferral periods. Additionally, none of the modifications involved forgiveness of principal. Commitments to lend additional funds to borrowers whose terms had been modified in TDRs were $1 million at September 30, 2022. For principal deferrals, incremental deterioration in the credit quality of the loan, represented by a downgrade in the risk rating of the loan, for example, due to missed interest payments or a reduction of collateral value, was considered a subsequent default. For interest rate reductions, a subsequent payment default was defined in terms of delinquency, when a principal or interest payment was 90 days past due. Of the TDRs modified during the twelve-month period ended September 30, 2022,

Derivative And Credit-Related F

Derivative And Credit-Related Financial Instruments	9 Months Ended
	Sep. 30, 2023
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative And Credit-Related Financial Instruments	DERIVATIVE AND CREDIT-RELATED FINANCIAL INSTRUMENTS In the normal course of business, the Corporation enters into various transactions involving derivative and credit-related financial instruments to manage exposure to fluctuations in interest rate, foreign currency and other market risks and to meet the financing needs of customers (customer-initiated derivatives). These financial instruments involve, to varying degrees, elements of market and credit risk. Market and credit risk are included in the determination of fair value. Market risk is the potential loss that may result from movements in interest rates, foreign currency exchange rates or energy commodity prices that cause an unfavorable change in the value of a financial instrument. The Corporation manages this risk by establishing monetary exposure limits and monitoring compliance with those limits. Market risk inherent in interest rate and energy contracts entered into on behalf of customers is mitigated by taking offsetting positions, except in those circumstances when the amount, tenor and/or contract rate level results in negligible economic risk, whereby the cost of purchasing an offsetting contract is not economically justifiable. The Corporation mitigates most of the inherent market risk in foreign exchange contracts entered into on behalf of customers by taking offsetting positions and manages the remainder through individual foreign currency position limits and aggregate value-at-risk limits. These limits are established annually and positions are monitored quarterly. Market risk inherent in derivative instruments held or issued for risk management purposes is typically offset by changes in the fair value of the assets or liabilities being hedged. Credit risk is the possible loss that may occur in the event of nonperformance by the counterparty to a financial instrument. The Corporation attempts to minimize credit risk arising from customer-initiated derivatives by evaluating the creditworthiness of each customer, adhering to the same credit approval process used for traditional lending activities and obtaining collateral as deemed necessary. Derivatives with dealer counterparties are either cleared through a clearinghouse or settled directly with a single counterparty. For derivatives settled directly with dealer counterparties, the Corporation utilizes counterparty risk limits and monitoring procedures as well as master netting arrangements and bilateral collateral agreements to facilitate the management of credit risk. Included in the fair value of derivative instruments are credit valuation adjustments reflecting counterparty credit risk. These adjustments are determined by applying a credit spread for the counterparty or the Corporation, as appropriate, to the total expected exposure of the derivative. Master netting arrangements effectively reduce credit valuation adjustments by permitting settlement of positive and negative positions and offset cash collateral held with the same counterparty on a net basis. Bilateral collateral agreements require daily exchange of cash or highly rated securities issued by the U.S. Treasury or other U.S. government entities to collateralize amounts due to either party. At September 30, 2023, counterparties with bilateral collateral agreements deposited $159 million of cash with the Corporation to secure the fair value of contracts in an unrealized gain position, and the Corporation had pledged $207 million of marketable investment securities and posted $12 million of cash as collateral for contracts in an unrealized loss position. For those counterparties not covered under bilateral collateral agreements, collateral is obtained, if deemed necessary, based on the results of management’s credit evaluation of the counterparty. Collateral varies, but may include cash, investment securities, accounts receivable, equipment or real estate. Derivative Instruments Derivative instruments utilized by the Corporation are negotiated over-the-counter and primarily include swaps, caps and floors, forward contracts and options, each of which may relate to interest rates, energy commodity prices or foreign currency exchange rates. Swaps are agreements in which two parties periodically exchange cash payments based on specified indices applied to a specified notional amount until a stated maturity. Caps and floors are agreements which entitle the buyer to receive cash payments based on the difference between a specified reference rate or price and an agreed strike rate or price, applied to a specified notional amount until a stated maturity. Forward contracts are over-the-counter agreements to buy or sell an asset at a specified future date and price. Options are similar to forward contracts except the purchaser has the right, but not the obligation, to buy or sell the asset during a specified period or at a specified future date. Over-the-counter contracts are tailored to meet the needs of the counterparties involved and, therefore, contain a greater degree of credit risk and liquidity risk than exchange-traded contracts, which have standardized terms and readily available price information. The Corporation reduces exposure to market and liquidity risks from over-the-counter derivative instruments entered into for risk management purposes, and transactions entered into to mitigate the market risk associated with customer-initiated transactions, by taking offsetting positions with investment grade domestic and foreign financial institutions and subjecting counterparties to credit approvals, limits and collateral monitoring procedures similar to those used in making other extensions of credit. In addition, certain derivative contracts executed bilaterally with a dealer counterparty in the over-the-counter market are cleared through a clearinghouse, whereby the clearinghouse becomes the counterparty to the transaction. The following table presents the composition of the Corporation’s derivative instruments held or issued for risk management purposes or in connection with customer-initiated and other activities at September 30, 2023 and December 31, 2022. The table excludes a derivative related to the Corporation's 2008 sale of its remaining ownership of Visa shares and includes accrued interest receivable and payable. September 30, 2023 December 31, 2022 Fair Value Fair Value (in millions) Notional/ Gross Derivative Assets Gross Derivative Liabilities Notional/ Gross Derivative Assets Gross Derivative Liabilities Risk management purposes Derivatives designated as hedging instruments Interest rate contracts: Fair value swaps - receive fixed/pay floating $ 6,300 $ — $ — $ 3,150 $ — $ — Cash flow swaps - receive fixed/pay floating (b) 25,100 — 2 26,600 — 50 Derivatives used as economic hedges Foreign exchange contracts: Spot, forwards and swaps 562 2 1 392 1 3 Total risk management purposes 31,962 2 3 30,142 1 53 Customer-initiated and other activities Interest rate contracts: Caps and floors written 1,459 — 24 924 — 25 Caps and floors purchased 1,459 24 — 924 25 — Swaps 19,347 279 634 18,450 181 569 Total interest rate contracts 22,265 303 658 20,298 206 594 Energy contracts: Caps and floors written 4,034 1 319 4,051 — 430 Caps and floors purchased 4,034 320 1 4,051 431 — Swaps 6,805 504 485 6,419 589 576 Total energy contracts 14,873 825 805 14,521 1,020 1,006 Foreign exchange contracts: Spot, forwards, options and swaps 2,581 48 42 2,704 52 42 Total customer-initiated and other activities 39,719 1,176 1,505 37,523 1,278 1,642 Total gross derivatives $ 71,681 1,178 1,508 $ 67,665 1,279 1,695 Amounts offset in the Consolidated Balance Sheets: Netting adjustment - Offsetting derivative assets/liabilities (446) (446) (644) (644) Netting adjustment - Cash collateral received/posted (155) (12) (180) (4) Net derivatives included in the Consolidated Balance Sheets (c) 577 1,050 455 1,047 Amounts not offset in the Consolidated Balance Sheets: Marketable securities pledged under bilateral collateral agreements (295) (207) (70) (202) Net derivatives after deducting amounts not offset in the Consolidated Balance Sheets $ 282 $ 843 $ 385 $ 845 (a) Notional or contractual amounts, which represent the extent of involvement in the derivatives market, are used to determine the contractual cash flows required in accordance with the terms of the agreement. These amounts are typically not exchanged, significantly exceed amounts subject to credit or market risk and are not reflected in the Consolidated Balance Sheets. (b) September 30, 2023 included $3.3 billion of forward starting swaps that will become effective on their contractual start dates in 2023 and 2024. (c) Net derivative assets are included in accrued income and other assets and net derivative liabilities are included in accrued expenses and other liabilities on the Consolidated Balance Sheets. Included in the fair value of net derivative assets and net derivative liabilities are credit valuation adjustments reflecting counterparty credit risk and credit risk of the Corporation. The fair value of net derivative assets included credit valuation adjustments for counterparty credit risk of $2 million at both September 30, 2023 and December 31, 2022. Risk Management The Corporation's derivative instruments used for managing interest rate risk include cash flow hedging strategies that convert variable-rate loans to fixed rates and fair value hedging strategies that convert fixed-rate medium- and long-term debt to variable rates. Interest and fees on loans included $163 million and $2 million of cash flow hedge losses for the three-month periods ended September 30, 2023 and 2022, respectively, and $(432) million and $45 million of cash flow hedge (loss) income for the nine-month periods ended September 30, 2023 and 2022, respectively. The following table details the effects of fair value hedging on the Consolidated Statements of Comprehensive Income. Interest on Medium- and Long-Term Debt Three Months Ended September 30, Nine Months Ended September 30, (in millions) 2023 2022 2023 2022 Total interest on medium- and long-term debt (a) $ 106 $ 26 $ 273 $ 47 Fair value hedging relationships: Interest rate contracts: Hedged items 74 28 194 79 Derivatives designated as hedging instruments 32 (2) 79 (32) (a) Includes the effects of hedging. Centrally-cleared derivative positions are settled daily based on derivative fair values and the party receiving net settlement amounts pays price alignment, based on an earning rate, to the party making settlement payments. Accordingly, the Corporation may recognize risk management hedging income consisting of price alignment income or expense depending on the fair value of its positions. Price alignment income was reported in other noninterest income on the Consolidated Statements of Comprehensive Income and totaled $17 million and $32 million for the three and nine months ended September 30, 2023, respectively, and was insignificant for the three and nine months ended September 30, 2022. For information on accumulated net losses on cash flow hedges, refer to Note 8. The following tables summarize the expected weighted average remaining maturity of the notional amount of risk management interest rate swaps, the weighted average interest rates associated with amounts expected to be received or paid on interest rate swap agreements, and for fair value swaps, the weighted average carrying amount of the related hedged items, as of September 30, 2023 and December 31, 2022. Cash flow swaps - receive fixed/pay floating rate on variable-rate loans September 30, 2023 December 31, 2022 Weighted average: Time to maturity (in years) 4.1 4.6 Receive rate (a) 2.38 % 2.35 % Pay rate (a), (b) 5.36 4.07 (a) Excludes forward starting swaps not effective as of the period shown. September 30, 2023 excluded $3.3 billion of forward starting swaps. December 31, 2022 excluded $4.6 billion of forward starting swaps. (b) Variable rates paid on receive fixed swaps designated as cash flow hedges are based on BSBY or Secured Overnight Financing Rate (SOFR) rates in effect at September 30, 2023 and BSBY, SOFR or LIBOR rates in effect at December 31, 2022. Fair value swaps - receive fixed/pay floating rate on medium- and long-term debt (dollar amounts in millions) September 30, 2023 December 31, 2022 Carrying value of hedged items (a) $ 6,049 $ 3,024 Weighted average: Time to maturity (in years) 3.5 3.9 Receive rate (b) 3.67 % 3.52 % Pay rate (b) 5.39 4.90 (a) Included $(250) million and $(124) million of cumulative hedging adjustments at September 30, 2023 and December 31, 2022, respectively, which included $3 million and $4 million, respectively, of hedging adjustment on a discontinued hedging relationship. (b) Floating rates paid on receive fixed swaps designated as fair value hedges are based on SOFR rates in effect at September 30, 2023 and SOFR and LIBOR rates in effect at December 31, 2022. Customer-Initiated and Other The Corporation enters into derivative transactions at the request of customers and generally takes offsetting positions with dealer counterparties to mitigate the inherent market risk. Income primarily results from the spread between the customer derivative and the offsetting dealer position. For customer-initiated foreign exchange contracts where offsetting positions have not been taken, the Corporation manages the remaining inherent market risk through individual foreign currency position limits and aggregate value-at-risk limits. These limits are established annually and reviewed quarterly. For those customer-initiated derivative contracts which were not offset or where the Corporation holds a position within the limits described above, the Corporation did not recognize any net gains or losses in other noninterest income on the Consolidated Statements of Comprehensive Income for the three months ended September 30, 2023, compared to a net gain of $1 million for the three months ended September 30, 2022. The Corporation recognized a net loss of $1 million for the nine months ended September 30, 2023, compared to no net gains or losses for the nine months ended September 30, 2022. Fair values of customer-initiated and other derivative instruments represent the net unrealized gains or losses on such contracts and are recorded on the Consolidated Balance Sheets. Changes in fair value are recognized on the Consolidated Statements of Comprehensive Income. The net gains recognized in income on customer-initiated derivative instruments, net of the impact of offsetting positions included in capital markets income, were as follows: Three Months Ended September 30, Nine Months Ended September 30, (in millions) 2023 2022 2023 2022 Interest rate contracts $ 5 $ 9 $ 17 $ 28 Energy contracts 4 14 17 22 Foreign exchange contracts 12 12 40 36 Total $ 21 $ 35 $ 74 $ 86 Credit-Related Financial Instruments The Corporation issues off-balance sheet financial instruments in connection with commercial and consumer lending activities. The Corporation’s credit risk associated with these instruments is represented by the contractual amounts indicated in the following table. (in millions) September 30, 2023 December 31, 2022 Unused commitments to extend credit: Commercial and other $ 28,357 $ 30,800 Bankcard, revolving credit and home equity loan commitments 4,169 4,017 Total unused commitments to extend credit $ 32,526 $ 34,817 Standby letters of credit $ 3,521 $ 3,712 Commercial letters of credit 42 39 The Corporation maintains an allowance to cover current expected credit losses inherent in lending-related commitments, including unused commitments to extend credit, letters of credit and financial guarantees. The allowance for credit losses on lending-related commitments, included in accrued expenses and other liabilities on the Consolidated Balance Sheets, was $42 million and $51 million at September 30, 2023 and December 31, 2022, respectively. Unused Commitments to Extend Credit Commitments to extend credit are legally binding agreements to lend to a customer, provided there is no violation of any condition established in the contract. These commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. Since many commitments expire without being drawn upon, the total contractual amount of commitments does not necessarily represent future cash requirements of the Corporation. Commercial and other unused commitments are primarily variable rate commitments. The allowance for credit losses on lending-related commitments included $39 million at September 30, 2023 and $44 million at December 31, 2022 for expected credit losses inherent in the Corporation’s unused commitments to extend credit. Standby and Commercial Letters of Credit Standby letters of credit represent conditional obligations of the Corporation which guarantee the performance of a customer to a third party. Standby letters of credit are primarily issued to support public and private borrowing arrangements, including commercial paper, bond financing and similar transactions. Commercial letters of credit are issued to finance foreign or domestic trade transactions. These contracts expire in decreasing amounts through the year 2033. The Corporation may enter into participation arrangements with third parties that effectively reduce the maximum amount of future payments which may be required under standby and commercial letters of credit. These risk participations covered $89 million and $107 million at September 30, 2023 and December 31, 2022, respectively, of the $3.6 billion and $3.8 billion of standby and commercial letters of credit outstanding at September 30, 2023 and December 31, 2022, respectively. The carrying value of the Corporation’s standby and commercial letters of credit, included in accrued expenses and other liabilities on the Consolidated Balance Sheets, totaled $34 million at September 30, 2023, including $31 million in deferred fees and $3 million in the allowance for credit losses on lending-related commitments. At December 31, 2022, the comparable amounts were $35 million, $28 million and $7 million, respectively. The following table presents a summary of criticized standby and commercial letters of credit at September 30, 2023 and December 31, 2022. The Corporation's criticized list is consistent with the Special Mention, Substandard and Doubtful categories defined by regulatory authorities. The Corporation manages credit risk through underwriting, periodically reviewing and approving its credit exposures using Board committee approved credit policies and guidelines. (dollar amounts in millions) September 30, 2023 December 31, 2022 Total criticized standby and commercial letters of credit $ 52 $ 37 As a percentage of total outstanding standby and commercial letters of credit 1.5 % 1.0 % Other Credit-Related Financial Instruments The Corporation enters into credit risk participation agreements, under which the Corporation assumes credit exposure associated with a borrower’s performance related to certain interest rate derivative contracts. The Corporation is not a party to the interest rate derivative contracts and only enters into these credit risk participation agreements in instances in which the Corporation is also a party to the related loan participation agreements for such borrowers. The Corporation manages its credit risk on the credit risk participation agreements by monitoring the creditworthiness of the borrowers, which is based on the normal credit review process as if the Corporation had entered into the derivative instruments directly with the borrower. The notional amount of such credit risk participation agreements reflects the pro-rata share of the derivative instrument, consistent with its share of the related participated loan. The total notional amount of the credit risk participation agreements was approximately $1 billion and $951 million at September 30, 2023 and December 31, 2022, respectively, and the fair value was insignificant at both September 30, 2023 and December 31, 2022. The maximum estimated exposure to these agreements, as measured by projecting a maximum value of the guaranteed derivative instruments, assuming 100 percent default by all obligors on the maximum values, was insignificant at September 30, 2023 and December 31, 2022. In the event of default, the lead bank has the ability to liquidate the assets of the borrower, in which case the lead bank would be required to return a percentage of the recouped assets to the participating banks. As of September 30, 2023, the weighted average remaining maturity of outstanding credit risk participation agreements was 4.3 years. In 2008, the Corporation sold its remaining ownership of Visa Class B shares and entered into a derivative contract. Under the terms of the derivative contract, the Corporation will compensate the counterparty primarily for dilutive adjustments made to the conversion factor of the Visa Class B shares to Class A shares based on the ultimate outcome of litigation involving Visa. Conversely, the Corporation will be compensated by the counterparty for any increase in the conversion factor from anti-dilutive adjustments. The notional amount of the derivative contract was equivalent to approximately 780,000 Visa Class B Shares. The fair value of the derivative liability, included in accrued expenses and other liabilities on the Consolidated Balance Sheets, was $13 million and $12 million at September 30, 2023 and December 31, 2022. respectively.

Variable Interest Entities (VIE

Variable Interest Entities (VIEs)	9 Months Ended
	Sep. 30, 2023
Variable Interest Entity, Not Primary Beneficiary, Disclosures [Abstract]
Variable Interest Entities (VIEs)	VARIABLE INTEREST ENTITIES (VIEs)The Corporation evaluates its interest in certain entities to determine if these entities meet the definition of a VIE and whether the Corporation is the primary beneficiary and should consolidate the entity based on the variable interests it held both at inception and when there is a change in circumstances that requires a reconsideration. The Corporation holds ownership interests in funds in the form of limited partnerships or limited liability companies (LLCs) investing in affordable housing projects that qualify for the low-income housing tax credit (LIHTC). The Corporation also directly invests in limited partnerships and LLCs which invest in community development projects, which generate similar tax credits to investors (other tax credit entities). As an investor, the Corporation obtains income tax credits and deductions from the operating losses of these tax credit entities. These tax credit entities meet the definition of a VIE; however, the Corporation is not the primary beneficiary of the entities, as the general partner or the managing member has both the power to direct the activities that most significantly impact the economic performance of the entities and the obligation to absorb losses or the right to receive benefits that could be significant to the entities. The Corporation accounts for its interests in LIHTC entities using the proportional amortization method. Ownership interests in other tax credit entities are accounted for under either the cost or equity method. Exposure to loss as a result of the Corporation's involvement in LIHTC entities and other tax credit entities at September 30, 2023 was limited to $482 million and $27 million, respectively. Investment balances, including all legally binding commitments to fund future investments, are included in accrued income and other assets on the Consolidated Balance Sheets. A liability is recognized in accrued expenses and other liabilities on the Consolidated Balance Sheets for all legally binding unfunded commitments to fund tax credit entities ($219 million at September 30, 2023). Amortization and other write-downs of LIHTC investments are presented on a net basis as a component of the provision for income taxes on the Consolidated Statements of Comprehensive Income, while amortization and write-downs of other tax credit investments are recorded in other noninterest income. The income tax credits and deductions are recorded as a reduction of income tax expense and a reduction of federal income taxes payable. The Corporation provided no financial or other support that was not contractually required to any of the above VIEs during the nine months ended September 30, 2023 and 2022. The following table summarizes the impact of these tax credit entities on the Corporation’s Consolidated Statements of Comprehensive Income. Three Months Ended September 30, Nine Months Ended September 30, (in millions) 2023 2022 2023 2022 Provision for income taxes: Amortization of LIHTC investments $ 17 $ 19 $ 51 $ 54 Low income housing tax credits (16) (18) (48) (51) Other tax benefits related to tax credit entities (5) (5) (15) (14) Total provision for income taxes $ (4) $ (4) $ (12) $ (11) For further information on the Corporation’s consolidation policy, see Note 1 to the consolidated financial statements in the Corporation's 2022 Annual Report.

Medium- And Long-Term Debt

Medium- And Long-Term Debt	9 Months Ended
	Sep. 30, 2023
Debt Disclosure [Abstract]
Medium- And Long-Term Debt	MEDIUM- AND LONG-TERM DEBT Medium- and long-term debt is summarized as follows: (in millions) September 30, 2023 December 31, 2022 Parent company Subordinated notes: 3.80% subordinated notes due 2026 (a) $ 235 $ 237 Medium- and long-term notes: 3.70% notes due July 2023 — 841 4.00% notes due 2029 (a) 502 515 Total medium- and long-term notes 502 1,356 Total parent company 737 1,593 Subsidiaries Subordinated notes: 4.00% subordinated notes due 2025 (a) 331 331 7.88% subordinated notes due 2026 (a) 159 165 5.33% subordinated notes due 2033 (a) 437 459 Total subordinated notes 927 955 Medium- and long-term notes: 2.50% notes due 2024 (a) 484 476 Total medium- and long-term notes 484 476 Federal Home Loan Bank advances: 5.07% advance due 2025 (a) 986 — 4.79% advance due 2026 (a) 978 — 4.49% advance due 2027 (a) 973 — 4.49% advance due 2028 (a) 964 — Total Federal Home Loan Bank advances: 3,901 — Total subsidiaries 5,312 1,431 Total medium- and long-term debt $ 6,049 $ 3,024 (a) The fixed interest rates on these notes have been swapped to a variable rate and designated in a hedging relationship. Accordingly, carrying value has been adjusted to reflect the change in the fair value of the debt as a result of changes in the benchmark rate. Subordinated notes with remaining maturities greater than one year qualify as Tier 2 capital. Comerica Bank (the Bank), a wholly-owned subsidiary of the Corporation, is a member of the FHLB, which provides short- and long-term funding to its members through advances collateralized by real estate-related assets. In first quarter 2023, the Bank borrowed $4.0 billion of fixed-rate FHLB advances due between 2025 and 2028. Interest is due monthly, with principal due at maturity. Additionally, the Bank entered into fair value fixed-to-floating rate swaps in which the Bank received a weighted-average fixed rate of 3.79% and pays a floating rate based on SOFR. Borrowing capacity is contingent on the amount of collateral available to be pledged to the FHLB. Total FHLB borrowings were $8.8 billion at September 30, 2023, which included $4.8 billion in short-term advances. Remaining capacity for future FHLB borrowings was $8.5 billion at September 30, 2023, which was secured by available real estate-related loans and investment securities collateral. Unamortized debt issuance costs deducted from the carrying amount of medium- and long-term debt totaled $7 million and $9 million at September 30, 2023 and December 31, 2022, respectively.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Loss	9 Months Ended
	Sep. 30, 2023
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Accumulated Other Comprehensive Loss	ACCUMULATED OTHER COMPREHENSIVE LOSS The following table presents a reconciliation of the changes in the components of accumulated other comprehensive loss and details the components of other comprehensive loss for the nine months ended September 30, 2023 and 2022, including the amount of income tax benefit allocated to each component of other comprehensive loss. Nine Months Ended September 30, (in millions) 2023 2022 Accumulated net unrealized losses on investment securities: Balance at beginning of period, net of tax $ (2,319) $ (99) Net unrealized losses arising during the period (613) (2,977) Less: Benefit for income taxes (144) (701) Change in net unrealized losses on investment securities, net of tax (469) (2,276) Balance at end of period, net of tax $ (2,788) $ (2,375) Accumulated net losses on cash flow hedges: Balance at beginning of period, net of tax $ (942) $ 55 Net cash flow hedge losses arising during the period (871) (1,397) Less: Benefit for income taxes (204) (329) Change in net cash flow hedge losses arising during the period, net of tax (667) (1,068) Less: Net cash flow (losses) gains included in interest and fees on loans (432) 45 Less: (Benefit) provision for income taxes (101) 11 Reclassification adjustment for net cash flow hedge (losses) gains included in net income, net of tax (331) 34 Change in net cash flow hedge losses, net of tax (336) (1,102) Balance at end of period, net of tax (a) $ (1,278) $ (1,047) Accumulated defined benefit pension and other postretirement plans adjustment: Balance at beginning of period, net of tax $ (481) $ (168) Amounts recognized in other noninterest expenses: Amortization of actuarial net loss 27 21 Amortization of prior service credit (17) (18) Total amounts recognized in other noninterest expenses 10 3 Less: Provision for income taxes 3 — Adjustment for amounts recognized as components of net periodic benefit credit during the period, net of tax 7 3 Change in defined benefit pension and other postretirement plans adjustment, net of tax 7 3 Balance at end of period, net of tax $ (474) $ (165) Total accumulated other comprehensive loss at end of period, net of tax $ (4,540) $ (3,587) (a) The Corporation expects to reclassify $507 million of losses, net of tax, from accumulated other comprehensive loss to earnings over the next twelve months if interest yield curves and notional amounts remain at September 30, 2023 levels.

Net Income Per Common Share

Net Income Per Common Share	9 Months Ended
	Sep. 30, 2023
Earnings Per Share [Abstract]
Net Income Per Common Share	NET INCOME PER COMMON SHARE Basic and diluted net income per common share are presented in the following table. Three Months Ended September 30, Nine Months Ended September 30, (in millions, except per share data) 2023 2022 2023 2022 Basic and diluted Net income $ 251 $ 351 $ 848 $ 801 Less: Income allocated to participating securities 1 2 4 4 Preferred stock dividends 6 6 17 17 Net income attributable to common shares $ 244 $ 343 $ 827 $ 780 Basic average common shares 132 131 132 131 Basic net income per common share $ 1.85 $ 2.63 $ 6.27 $ 5.96 Basic average common shares 132 131 132 131 Dilutive common stock equivalents: Net effect of the assumed exercise of stock awards 1 1 1 2 Diluted average common shares 133 132 133 133 Diluted net income per common share $ 1.84 $ 2.60 $ 6.24 $ 5.88 The following average shares related to outstanding options to purchase shares of common stock that were not included in the computation of diluted net income per common share because the options were anti-dilutive for the period. Three Months Ended September 30, Nine Months Ended September 30, (average outstanding options in thousands) 2023 2022 2023 2022 Average outstanding options 1,633 373 1,540 337 Range of exercise prices $49.20 - $95.25 $79.01 - $95.25 $49.20 - $95.25 $70.18 - $95.25

Employee Benefit Plans

Employee Benefit Plans	9 Months Ended
	Sep. 30, 2023
Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Abstract]
Employee Benefit Plans	EMPLOYEE BENEFIT PLANS Net periodic defined benefit cost (credit) is comprised of service cost and other components of net benefit cost (credit). Service cost is included in salaries and benefits expense and other components of net benefit cost (credit) are included in other noninterest expenses on the Consolidated Statements of Comprehensive Income. For further information on the Corporation's employee benefit plans, refer to Note 17 to the consolidated financial statements in the Corporation's 2022 Annual Report. The components of net periodic benefit cost (credit) for the Corporation's qualified pension plan, non-qualified pension plan and postretirement benefit plan are as follows. Qualified Defined Benefit Pension Plan Three Months Ended September 30, Nine Months Ended September 30, (in millions) 2023 2022 2023 2022 Service cost $ 8 $ 9 $ 23 $ 28 Other components of net benefit credit: Interest cost 21 16 64 47 Expected return on plan assets (41) (51) (124) (151) Amortization of prior service credit (3) (4) (10) (11) Amortization of net loss 8 4 24 14 Total other components of net benefit credit (15) (35) (46) (101) Net periodic defined benefit credit $ (7) $ (26) $ (23) $ (73) Non-Qualified Defined Benefit Pension Plan Three Months Ended September 30, Nine Months Ended September 30, (in millions) 2023 2022 2023 2022 Service cost $ 1 $ 1 $ 2 $ 2 Other components of net benefit cost: Interest cost 2 1 6 4 Amortization of prior service credit (3) (2) (7) (7) Amortization of net loss 1 3 3 7 Total other components of net benefit cost — 2 2 4 Net periodic defined benefit cost $ 1 $ 3 $ 4 $ 6 Postretirement Benefit Plan Three Months Ended September 30, Nine Months Ended September 30, (in millions) 2023 2022 2023 2022 Other components of net benefit credit: Interest cost $ 1 $ 1 $ 1 $ 1 Expected return on plan assets (1) (1) (2) (2) Net periodic defined benefit credit $ — $ — $ (1) $ (1)

Income Taxes And Tax-Related It

Income Taxes And Tax-Related Items	9 Months Ended
	Sep. 30, 2023
Income Tax Disclosure [Abstract]
Income Taxes and Tax-Related Items	INCOME TAXES AND TAX-RELATED ITEMSNet unrecognized tax benefits were $13 million and $16 million at September 30, 2023 and December 31, 2022, respectively. The Corporation anticipates that a final settlement of state tax issues will result in a change of $6 million to net unrecognized tax benefits within the next twelve months. Included in accrued expenses and other liabilities on the Consolidated Balance Sheets was a liability for tax-related interest and penalties of $1 million and $5 million at September 30, 2023 and December 31, 2022, respectively. These changes were primarily driven by a state settlement received in the first quarter of 2023. Net deferred tax assets were $1.4 billion at September 30, 2023, compared to $1.1 billion at December 31, 2022. The increase of $269 million in net deferred tax assets resulted primarily from an increase to deferred tax assets related to hedging losses and an increase in the allowance for loan losses, partially offset by a decrease in deferred compensation. Included in deferred tax assets at September 30, 2023 were $2 million of state net operating loss (NOL) carryforwards and $5 million of federal foreign tax carryforwards, compared to $2 million and $4 million, respectively, at December 31, 2022. State NOL carryforwards expire between 2023 and 2041 and federal foreign tax credit carryforwards expire between 2028 and 2032. The Corporation believes that it is more likely than not that the benefit from federal foreign tax credits and certain state NOL carryforwards will not be realized and, accordingly, increased its federal valuation allowance from $4 million at December 31, 2022 to $5 million at September 30, 2023. The Corporation maintained a state valuation allowance of $1 million at both September 30, 2023 and December 31, 2022. The determination regarding valuation allowance was based on evidence of loss carryback capacity, projected future reversals of existing taxable temporary differences to absorb the deferred tax assets and assumptions made regarding future events. In the ordinary course of business, the Corporation enters into certain transactions that have tax consequences. From time to time, the Internal Revenue Service (IRS) or other tax jurisdictions may review and/or challenge specific interpretive tax positions taken by the Corporation with respect to those transactions. The Corporation believes its tax returns were filed based upon applicable statutes, regulations and case law in effect at the time of the transactions. The IRS or other tax jurisdictions, an administrative authority or a court, if presented with the transactions, could disagree with the Corporation’s interpretation of the tax law. Based on current knowledge and probability assessment of various potential outcomes, the Corporation believes that current tax reserves are adequate, and the amount of any potential incremental liability arising is not expected to have a material adverse effect on the Corporation’s consolidated financial condition or results of operations. Probabilities and outcomes are reviewed as events unfold, and adjustments to the reserves are made when necessary.

Contingent Liabilities

Contingent Liabilities	9 Months Ended
	Sep. 30, 2023
Commitments and Contingencies Disclosure [Abstract]
Contingent Liabilities	CONTINGENT LIABILITIES Legal Proceedings and Regulatory Matters The Corporation and certain of its subsidiaries are subject to various other pending or threatened legal proceedings arising out of the normal course of business or operations. The Corporation believes it has meritorious defenses to the claims asserted against it in its other currently outstanding legal proceedings and, with respect to such legal proceedings, intends to continue to defend itself vigorously, litigating or settling cases according to management’s judgment as to what is in the best interests of the Corporation and its shareholders. Settlement may result from the Corporation's determination that it may be more prudent financially to settle, rather than litigate, and should not be regarded as an admission of liability. Further, from time to time, the Corporation is also subject to examinations, inquiries and investigations by regulatory authorities in areas including, but not limited to, compliance, risk management and consumer protection, which could lead to administrative or legal proceedings or settlements. For example, the Consumer Financial Protection Bureau (CFPB) is investigating certain of the Corporation's practices, and the Corporation has responded and continues to respond to the CFPB. We are unable to predict the outcome of these discussions at this time. Remedies in these proceedings or settlements may include fines, penalties, restitution or alterations in the Corporation's business practices and may result in increased operating expenses or decreased revenues. On at least a quarterly basis, the Corporation assesses its potential liabilities and contingencies in connection with outstanding legal proceedings and regulatory matters utilizing the latest information available. On a case-by-case basis, accruals are established for those legal claims and regulatory matters for which it is probable that a loss will be incurred and the amount of such loss can be reasonably estimated. The actual costs of resolving these claims and regulatory matters may be substantially higher or lower than the amounts accrued. Based on current knowledge, and after consultation with legal counsel, management believes current accruals are adequate, and the amount of any incremental liability arising from these matters is not expected to have a material adverse effect on the Corporation’s consolidated financial condition, results of operations or cash flows. For matters where a loss is not probable, the Corporation has not established an accrual. The Corporation believes the estimate of the aggregate range of reasonably possible losses, in excess of established accruals, for all legal proceedings and regulatory matters in which it is involved is from zero to approximately $201 million at September 30, 2023. This estimated aggregate range of reasonably possible losses is based upon currently available information for those legal proceedings and regulatory matters in which the Corporation is involved, taking into account the Corporation’s best estimate of such losses for those legal proceedings and regulatory matters for which such estimate can be made. For certain legal proceedings and regulatory matters, the Corporation does not believe that an estimate can currently be made. The Corporation’s estimate involves significant judgment, given the varying stages of the legal proceedings and regulatory matters (including the fact that many are currently in preliminary stages), the existence in certain legal proceedings of multiple defendants (including the Corporation) whose share of liability has yet to be determined, the numerous yet-unresolved issues in many of the legal proceedings and regulatory matters (including issues regarding class certification and the scope of many of the claims) and the attendant uncertainty of the various potential outcomes of such legal proceedings and regulatory matters. Accordingly, the Corporation’s estimate will change from time to time, and actual losses may be more or less than the current estimate. In the event of unexpected future developments, it is possible the ultimate resolution of these matters, if unfavorable, may be material to the Corporation's consolidated financial condition, results of operations or cash flows. For information regarding income tax contingencies, refer to Note 11.

Strategic Lines of Business

Strategic Lines of Business	9 Months Ended
	Sep. 30, 2023
Segment Reporting [Abstract]
Strategic Lines of Business	STRATEGIC LINES OF BUSINESS The Corporation has strategically aligned its operations into three major business segments: the Commercial Bank, the Retail Bank and Wealth Management. These business segments are differentiated based on the type of customer and the related products and services provided. In addition to the three major business segments, the Finance Division is also reported as a segment. Business segment results are produced by the Corporation’s internal management accounting system. This system measures financial results based on the internal business unit structure of the Corporation. The performance of the business segments is not comparable with the Corporation's consolidated results and is not necessarily comparable with similar information for any other financial institution. Additionally, because of the interrelationships of the various segments, the information presented is not indicative of how the segments would perform if they operated as independent entities. The management accounting system assigns balance sheet and income statement items to each business segment using certain methodologies, which are regularly reviewed and refined. From time to time, the Corporation may make reclassifications among the segments to more appropriately reflect management's current view of the segments, and methodologies may be modified as the management accounting system is enhanced and changes occur in the organizational structure and/or product lines. For comparability purposes, amounts in all periods are based on business unit structure and methodologies in effect at September 30, 2023. The following discussion provides information about the activities of each business segment. A discussion of the financial results and the factors impacting performance can be found in "Business Segments" in the "Strategic Lines of Business" section of the financial review. The Commercial Bank meets the needs of small and middle market businesses, multinational corporations and governmental entities by offering various products and services including commercial loans and lines of credit, deposits, cash management, capital market products, international trade finance, letters of credit, foreign exchange management services and loan syndication services. The Retail Bank includes a full range of personal financial services, consisting of consumer lending, consumer deposit gathering and mortgage loan origination. This business segment offers a variety of consumer products including deposit accounts, installment loans, credit cards, student loans, home equity lines of credit and residential mortgage loans. In addition, this business segment offers a subset of commercial products and services to micro-businesses whose primary contact is through the branch network. Wealth Management offers products and services consisting of fiduciary services, private banking, retirement services, investment management and advisory services, investment banking and brokerage services. This business segment also offers the sale of annuity products, as well as life, disability and long-term care insurance products. The Finance segment includes the Corporation’s securities portfolio and asset and liability management activities. This segment is responsible for managing the Corporation’s funding, liquidity and capital needs, performing interest sensitivity analysis and executing various strategies to manage the Corporation’s exposure to liquidity, interest rate risk and foreign exchange risk. The Other category includes the income and expense impact of equity and cash, tax benefits not assigned to specific business segments, charges of an unusual or infrequent nature that are not reflective of the normal operations of the business segments and miscellaneous other expenses of a corporate nature. For further information on the methodologies which form the basis for these results refer to Note 22 to the consolidated financial statements in the Corporation's 2022 Annual Report. Business segment financial results were as follows: Commercial Retail Wealth Management Finance Other Total (dollar amounts in millions) Three Months Ended September 30, 2023 Earnings summary: Net interest income (expense) $ 505 $ 208 $ 49 $ (187) $ 26 $ 601 Provision for credit losses 22 — (9) — 1 14 Noninterest income 150 31 78 40 (4) 295 Noninterest expenses 257 175 102 1 20 555 Provision (benefit) for income taxes 89 16 9 (37) (1) 76 Net income (loss) $ 287 $ 48 $ 25 $ (111) $ 2 $ 251 Net charge-offs $ 6 $ — $ — $ — $ — $ 6 Selected average balances: Assets $ 49,459 $ 2,985 $ 5,557 $ 19,832 $ 11,317 $ 89,150 Loans 46,477 2,250 5,227 — 33 53,987 Deposits 31,868 24,034 3,950 5,711 320 65,883 Statistical data: Return on average assets (a) 2.30 % 0.78 % 1.81 % n/m n/m 1.12 % Efficiency ratio (b) 39.34 72.70 80.01 n/m n/m 61.86 Three Months Ended September 30, 2022 Earnings summary: Net interest income (expense) $ 478 $ 188 $ 55 $ (22) $ 8 $ 707 Provision for credit losses 16 2 5 — 5 28 Noninterest income 169 29 77 6 (3) 278 Noninterest expenses 242 170 87 — 3 502 Provision (benefit) for income taxes 94 11 10 (6) (5) 104 Net income (loss) $ 295 $ 34 $ 30 $ (10) $ 2 $ 351 Net charge-offs $ 13 $ — $ — $ — $ — $ 13 Selected average balances: Assets $ 48,323 $ 2,799 $ 5,097 $ 22,140 $ 7,063 $ 85,422 Loans 44,043 2,066 4,973 — 31 51,113 Deposits 41,471 26,665 5,293 144 403 73,976 Statistical data: Return on average assets (a) 2.42 % 0.51 % 2.08 % n/m n/m 1.63 % Efficiency ratio (b) 37.54 77.00 65.86 n/m n/m 50.75 (a) Return on average assets is calculated based on the greater of average assets or average liabilities and attributed equity. (b) Noninterest expenses as a percentage of the sum of net interest income and noninterest income excluding net gains (losses) from securities, a derivative contract tied to the conversion rate of Visa Class B shares and changes in the value of shares obtained through monetization of warrants. n/m – not meaningful (dollar amounts in millions) Commercial Retail Wealth Management Finance Other Total Nine Months Ended September 30, 2023 Earnings summary: Net interest income (expense) $ 1,550 $ 644 $ 158 $ (493) $ 71 $ 1,930 Provision for credit losses 80 2 (9) — 4 77 Noninterest income 460 89 233 93 5 880 Noninterest expenses 757 511 297 4 72 1,641 Provision (benefit) for income taxes 270 53 25 (101) (3) 244 Net income (loss) $ 903 $ 167 $ 78 $ (303) $ 3 $ 848 Net charge-offs $ 1 $ — $ 1 $ — $ — $ 2 Selected average balances: Assets $ 49,906 $ 2,944 $ 5,510 $ 20,469 $ 9,400 $ 88,229 Loans 46,797 2,223 5,256 — — 54,276 Deposits 33,204 24,394 4,200 3,858 353 66,009 Statistical data: Return on average assets (a) 2.42 % 0.89 % 1.92 % n/m n/m 1.29 % Efficiency ratio (b) 37.64 69.23 75.70 n/m n/m 58.26 Nine Months Ended September 30, 2022 Earnings summary: Net interest income (expense) $ 1,232 $ 464 $ 138 $ (118) $ 8 $ 1,724 Provision for credit losses 1 7 11 — 8 27 Noninterest income 461 89 226 36 (22) 790 Noninterest expenses 712 508 259 — (22) 1,457 Provision (benefit) for income taxes 229 9 23 (25) (7) 229 Net income (loss) $ 751 $ 29 $ 71 $ (57) $ 7 $ 801 Net charge-offs (recoveries) $ 24 $ (1) $ (2) $ — $ — $ 21 Selected average balances: Assets $ 46,992 $ 2,791 $ 4,974 $ 20,831 $ 12,852 $ 88,440 Loans 42,928 2,031 4,841 — 15 49,815 Deposits 43,733 26,890 5,520 300 428 76,871 Statistical data: Return on average assets (a) 2.07 % 0.15 % 1.61 % n/m n/m 1.21 % Efficiency ratio (b) 41.95 90.82 71.08 n/m n/m 57.67 (a) Return on average assets is calculated based on the greater of average assets or average liabilities and attributed equity. (b) Noninterest expenses as a percentage of the sum of net interest income and noninterest income excluding net gains (losses) from securities, a derivative contract tied to the conversion rate of Visa Class B shares and changes in the value of shares obtained through monetization of warrants. n/m – not meaningful

Revenue From Contracts With Cus

Revenue From Contracts With Customers	9 Months Ended
	Sep. 30, 2023
Revenue from Contract with Customer [Abstract]
Revenue From Contracts with Customers	REVENUE FROM CONTRACTS WITH CUSTOMERS Revenue from contracts with customers comprises the noninterest income earned by the Corporation in exchange for services provided to customers. The following table presents the composition of revenue from contracts with customers, segregated from other sources of noninterest income, by business segment. Commercial Retail Wealth Management Finance & Other Total (in millions) Three Months Ended September 30, 2023 Revenue from contracts with customers: Card fees $ 58 $ 12 $ 1 $ — $ 71 Fiduciary income 1 — 58 — 59 Service charges on deposit accounts 32 14 1 — 47 Commercial loan servicing fees (a) 3 — — — 3 Capital markets income (b) 4 — — — 4 Brokerage fees — — 8 (2) 6 Other noninterest income (b) — 4 7 — 11 Total revenue from contracts with customers 98 30 75 (2) 201 Other sources of noninterest income 52 1 3 38 94 Total noninterest income $ 150 $ 31 $ 78 $ 36 $ 295 Three Months Ended September 30, 2022 Revenue from contracts with customers: Card fees $ 56 $ 10 $ 1 $ — $ 67 Fiduciary income — — 58 — 58 Service charges on deposit accounts 34 15 1 — 50 Commercial loan servicing fees (a) (c) 3 — — — 3 Capital markets income (b) (c) 3 — — — 3 Brokerage fees — — 6 — 6 Other noninterest income (b) (c) 1 3 7 — 11 Total revenue from contracts with customers 97 28 73 — 198 Other sources of noninterest income 72 1 4 3 80 Total noninterest income $ 169 $ 29 $ 77 $ 3 $ 278 Nine Months Ended September 30, 2023 Revenue from contracts with customers: Card fees $ 175 $ 34 $ 3 $ — $ 212 Fiduciary income 1 — 178 — 179 Service charges on deposit accounts 95 41 4 — 140 Commercial loan servicing fees (a) 9 — — — 9 Capital markets income (b) 12 — — — 12 Brokerage fees — — 24 (2) 22 Other noninterest income (b) 1 10 20 1 32 Total revenue from contracts with customers 293 85 229 (1) 606 Other sources of noninterest income 167 4 4 99 274 Total noninterest income $ 460 $ 89 $ 233 $ 98 $ 880 Nine Months Ended September 30, 2022 Revenue from contracts with customers: Card fees $ 171 $ 31 $ 3 $ — $ 205 Fiduciary income — — 178 — 178 Service charges on deposit accounts 101 43 4 — 148 Commercial loan servicing fees (a) (c) 9 — — — 9 Capital markets income (b) (c) 8 — — — 8 Brokerage fees — — 14 — 14 Other noninterest income (b) (c) 3 13 18 — 34 Total revenue from contracts with customers 292 87 217 — 596 Other sources of noninterest income 169 2 9 14 194 Total noninterest income $ 461 $ 89 $ 226 $ 14 $ 790 (a) Included in commercial lending fees on the Consolidated Statements of Comprehensive Income. (b) Excludes derivative, warrant and other miscellaneous income. (c) Effective January 1, 2023, the Corporation reported derivative income, syndication agent fees (previously a component of commercial lending fees) and investment banking fees (previously a component of other noninterest income) as a combined item captioned by capital markets income on the Consolidated Statements of Comprehensive Income. Prior periods have been adjusted to conform to this presentation, and the changes in presentation do not impact total noninterest income. Revenue from contracts with customers did not generate significant contract assets and liabilities for the periods presented.

Basis of Presentation and Acc_2

Basis of Presentation and Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2023
Accounting Policies [Abstract]
Loans and Recently Issued Accounting Pronouncements	Loans Effective January 1, 2023, the Corporation adopted the provisions of Accounting Standards Update (ASU) No. 2022-02, "Financial Instruments - Credit Losses (Topic 326): Troubled Debt Restructurings and Vintage Disclosures" (ASU 2022-02), which eliminated the accounting for troubled debt restructurings (TDRs) while expanding loan modification and vintage disclosure requirements. Under ASU 2022-02, the Corporation assesses all loan modifications to determine whether one is granted to a borrower experiencing financial difficulty, regardless of whether the modified loan terms include a concession. Modifications granted to borrowers experiencing financial difficulty may be in the form of an interest rate reduction, an other-than-insignificant payment delay, a term extension, principal forgiveness or a combination thereof (collectively referred to as Financially Distressed Modifications or FDMs). Prior to the adoption of ASU 2022-02, a TDR occurred when a loan to a borrower experiencing financial difficulty was restructured with a concession provided that a creditor would not otherwise consider. For the Corporation's accounting policy related to TDRs granted prior to the adoption of ASU 2022-02, refer to the consolidated financial statements and footnotes thereto included in the 2022 Annual Report. The Corporation adopted ASU 2022-02 on a prospective basis. There was no financial statement impact from the adoption of this ASU. Refer to Note 4 for further information. Recently Issued Accounting Pronouncements In March 2023, the Financial Accounting Standards Board (FASB) issued ASU No. 2023-02 "Investments-Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method (a consensus of the Emerging Issues Task Force)" (ASU 2023-02). ASU 2023-02 expands the permitted use of the proportional amortization method, which is currently only available to low-income housing tax credit investments, to other tax equity investments if certain conditions are met. Under the proportional amortization method, the initial cost of an investment is amortized in proportion to the income tax benefits received and both the amortization of the investment and the income tax benefits received are recognized as a component of income tax expense. This ASU is effective on January 1, 2024 and may be applied on either a modified retrospective or retrospective basis or, for certain changes, on a prospective basis. Early adoption is permitted. This ASU is not expected to have a material impact on the Corporation's financial statements.

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2023
Fair Value Disclosures [Abstract]
Assets And Liabilities Recorded At Fair Value On A Recurring Basis	The following tables present the recorded amount of assets and liabilities measured at fair value on a recurring basis as of September 30, 2023 and December 31, 2022. (in millions) Total Level 1 Level 2 Level 3 September 30, 2023 Deferred compensation plan assets $ 97 $ 97 $ — $ — Equity securities 45 45 — — Investment securities available-for-sale: U.S. Treasury securities 1,681 1,681 — — Residential mortgage-backed securities (a) 10,174 — 10,174 — Commercial mortgage-backed securities (a) 4,468 — 4,468 — Total investment securities available-for-sale 16,323 1,681 14,642 — Derivative assets: Interest rate contracts 303 — 303 — Energy contracts 825 — 825 — Foreign exchange contracts 50 — 50 — Total derivative assets 1,178 — 1,178 — Total assets at fair value $ 17,643 $ 1,823 $ 15,820 $ — Derivative liabilities: Interest rate contracts $ 660 $ — $ 660 $ — Energy contracts 805 — 805 — Foreign exchange contracts 43 — 43 — Other financial derivative liabilities 13 — — 13 Total derivative liabilities 1,521 — 1,508 13 Deferred compensation plan liabilities 97 97 — — Total liabilities at fair value $ 1,618 $ 97 $ 1,508 $ 13 December 31, 2022 Deferred compensation plan assets $ 92 $ 92 $ — $ — Equity securities 44 44 — — Investment securities available-for-sale: U.S. Treasury securities 2,664 2,664 — — Residential mortgage-backed securities (a) 11,655 — 11,655 — Commercial mortgage-backed securities (a) 4,693 — 4,693 — Total investment securities available-for-sale 19,012 2,664 16,348 — Derivative assets: Interest rate contracts 206 — 206 — Energy contracts 1,020 — 1,020 — Foreign exchange contracts 53 — 53 — Total derivative assets 1,279 — 1,279 — Total assets at fair value $ 20,427 $ 2,800 $ 17,627 $ — Derivative liabilities: Interest rate contracts $ 644 $ — $ 644 $ — Energy contracts 1,006 — 1,006 — Foreign exchange contracts 45 — 45 — Other financial derivative liabilities 12 — — 12 Total derivative liabilities 1,707 — 1,695 12 Deferred compensation plan liabilities 92 92 — — Total liabilities at fair value $ 1,799 $ 92 $ 1,695 $ 12 (a) Issued and/or guaranteed by U.S. government agencies or U.S. government-sponsored enterprises.
Changes In Level 3 Assets And Liabilities Measured At Fair Value On A Recurring Basis	The following table summarizes the changes in Level 3 assets and liabilities measured at fair value on a recurring basis for the three- and nine-month periods ended September 30, 2023 and 2022. Net Realized/Unrealized Gains (Losses) (Pretax) Recorded in Earnings (a) (in millions) Balance at Beginning of Period Realized Unrealized Settlements Balance at End of Period Three Months Ended September 30, 2023 Derivative liabilities: Other financial derivative liabilities $ (14) $ — $ 1 $ — $ (13) Three Months Ended September 30, 2022 Derivative liabilities: Other financial derivative liabilities (12) — — — (12) Nine Months Ended September 30, 2023 Derivative liabilities: Other financial derivative liabilities (12) — (1) — (13) Nine Months Ended September 30, 2022 Derivative assets: Interest rate contracts $ 26 $ — $ — $ (26) $ — Derivative liabilities: Other financial derivative liabilities (13) — 1 — (12) (a) Realized and unrealized gains and losses due to changes in fair value are recorded in other noninterest income on the Consolidated Statements of Comprehensive Income.
Assets And Liabilities Recorded At Fair Value On A Nonrecurring Basis	The following table presents assets recorded at fair value on a nonrecurring basis at September 30, 2023 and December 31, 2022. No liabilities were recorded at fair value on a nonrecurring basis at September 30, 2023 and December 31, 2022. (in millions) Level 3 September 30, 2023 Loans: Commercial $ 27 Real estate construction 2 Commercial mortgage 3 International 2 Total loans 34 Loans held-for-sale 236 Other real estate 5 Total assets at fair value $ 275 December 31, 2022 Loans: Commercial $ 53 Real estate construction 2 Commercial mortgage 11 Total loans 66 Other real estate 9 Total assets at fair value $ 75
Estimated Fair Values Of Financial Instruments Not Recorded At Fair Value In Their Entirety On A Recurring Basis	The carrying amount and estimated fair value of financial instruments not recorded at fair value in their entirety on a recurring basis on the Corporation’s Consolidated Balance Sheets are as follows: Carrying Estimated Fair Value (in millions) Total Level 1 Level 2 Level 3 September 30, 2023 Assets Cash and due from banks $ 1,228 $ 1,228 $ 1,228 $ — $ — Interest-bearing deposits with banks 6,884 6,884 6,884 — — Other short-term investments 24 24 24 — — Loans held-for-sale 2 2 — 2 — Total loans, net of allowance for loan losses (a) 52,704 50,810 — — 50,810 Customers’ liability on acceptances outstanding 1 1 1 — — Restricted equity investments 453 453 453 — — Nonmarketable equity securities (b) 6 12 Liabilities Demand deposits (noninterest-bearing) 29,922 29,922 — 29,922 — Interest-bearing deposits 28,824 28,824 — 28,824 — Customer certificates of deposit 3,401 3,372 — 3,372 — Other time deposits 5,011 5,106 — 5,106 — Total deposits 67,158 67,224 — 67,224 — Short-term borrowings 4,812 4,812 4,812 — — Acceptances outstanding 1 1 1 — — Medium- and long-term debt 6,049 5,781 — 5,781 — Credit-related financial instruments (73) (73) — — (73) December 31, 2022 Assets Cash and due from banks $ 1,758 $ 1,758 $ 1,758 $ — $ — Interest-bearing deposits with banks 4,524 4,524 4,524 — — Other short-term investments 19 19 19 — — Loans held-for-sale 2 2 — 2 — Total loans, net of allowance for loan losses (a) 52,792 50,964 — — 50,964 Customers’ liability on acceptances outstanding 3 3 3 — — Restricted equity investments 223 223 223 — — Nonmarketable equity securities (b) 5 12 Liabilities Demand deposits (noninterest-bearing) 39,945 39,945 — 39,945 — Interest-bearing deposits 29,566 29,566 — 29,566 — Customer certificates of deposit 1,762 1,719 — 1,719 — Other time deposits 124 124 — 124 — Total deposits 71,397 71,354 — 71,354 — Short-term borrowings 3,211 3,211 3,211 — — Acceptances outstanding 3 3 3 — — Medium- and long-term debt 3,024 3,071 — 3,071 — Credit-related financial instruments (79) (79) — — (79) (a) Included $34 million and $66 million of loans recorded at fair value on a nonrecurring basis at September 30, 2023 and December 31, 2022, respectively. (b) Certain investments that are measured at fair value using the net asset value have not been classified in the fair value hierarchy. The fair value amounts presented in the table are intended to permit reconciliation of the fair value hierarchy to the amounts presented in the Consolidated Balance Sheets.

Investment Securities (Tables)

Investment Securities (Tables)	9 Months Ended
	Sep. 30, 2023
Investments, Debt and Equity Securities [Abstract]
Summary Of Investment Securities	A summary of the Corporation’s investment securities follows: (in millions) Amortized Gross Gross Fair Value September 30, 2023 Investment securities available-for-sale: U.S. Treasury securities $ 1,788 $ — $ 107 $ 1,681 Residential mortgage-backed securities (a) 12,928 — 2,754 10,174 Commercial mortgage-backed securities (a) 5,253 — 785 4,468 Total investment securities available-for-sale $ 19,969 $ — $ 3,646 $ 16,323 December 31, 2022 Investment securities available-for-sale: U.S. Treasury securities $ 2,810 $ — $ 146 $ 2,664 Residential mortgage-backed securities (a) 13,983 — 2,328 11,655 Commercial mortgage-backed securities (a) 5,252 — 559 4,693 Total investment securities available-for-sale $ 22,045 $ — $ 3,033 $ 19,012 (a) Issued and/or guaranteed by U.S. government agencies or U.S. government-sponsored enterprises.
Summary Of Investment Securities in Unrealized Loss Positions	A summary of the Corporation’s investment securities in an unrealized loss position as of September 30, 2023 and December 31, 2022 follows: Less than 12 Months 12 Months or more Total (in millions, except securities count) Fair Unrealized Fair Unrealized Fair Unrealized Count September 30, 2023 U.S. Treasury securities $ — $ — $ 1,681 $ 107 $ 1,681 $ 107 20 Residential mortgage-backed securities (a) 15 — 10,159 2,754 10,174 2,754 994 Commercial mortgage-backed securities (a) — — 4,468 785 4,468 785 253 Total temporarily impaired securities $ 15 $ — $ 16,308 $ 3,646 $ 16,323 $ 3,646 1,267 December 31, 2022 U.S. Treasury securities $ 996 $ 5 $ 1,668 $ 141 $ 2,664 $ 146 27 Residential mortgage-backed securities (a) 3,500 361 8,153 1,967 11,653 2,328 1,008 Commercial mortgage-backed securities (a) 4,008 405 685 154 4,693 559 254 Total temporarily impaired securities $ 8,504 $ 771 $ 10,506 $ 2,262 $ 19,010 $ 3,033 1,289 (a) Issued and/or guaranteed by U.S. government agencies or U.S. government-sponsored enterprises.
Contractual Maturity Distribution Of Debt Securities	The following table summarizes the amortized cost and fair values of investment securities by contractual maturity. Securities with multiple maturity dates are classified in the period of final maturity. The actual cash flows of mortgage-backed securities may differ as borrowers of the underlying loans may exercise prepayment options. 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. (in millions) September 30, 2023 Amortized Cost Fair Value Contractual maturity One year or less $ 662 $ 641 After one year through five years 1,380 1,278 After five years through ten years 5,366 4,580 After ten years 12,561 9,824 Total investment securities $ 19,969 $ 16,323

Credit Quality And Allowance _2

Credit Quality And Allowance For Credit Losses (Tables)	9 Months Ended
	Sep. 30, 2023
Credit Loss [Abstract]
Aging Analysis Of Loans	The following table presents an aging analysis of the amortized cost basis of loans. Loans Past Due and Still Accruing (in millions) 30-59 60-89 90 Days Total Nonaccrual Current Total September 30, 2023 Business loans: Commercial $ 51 $ 18 $ 26 $ 95 $ 83 $ 28,829 $ 29,007 Real estate construction: Commercial Real Estate business line (a) 32 — — 32 — 3,983 4,015 Other business lines (b) 26 — — 26 2 502 530 Total real estate construction 58 — — 58 2 4,485 4,545 Commercial mortgage: Commercial Real Estate business line (a) — — — — — 4,832 4,832 Other business lines (b) 43 20 18 81 30 8,778 8,889 Total commercial mortgage 43 20 18 81 30 13,610 13,721 Lease financing 7 — 1 8 — 782 790 International 3 — — 3 3 1,188 1,194 Total business loans 162 38 45 245 118 48,894 49,257 Retail loans: Residential mortgage 7 2 — 9 19 1,877 1,905 Consumer: Home equity 13 2 — 15 17 1,732 1,764 Other consumer 2 — — 2 — 470 472 Total consumer 15 2 — 17 17 2,202 2,236 Total retail loans 22 4 — 26 36 4,079 4,141 Total loans $ 184 $ 42 $ 45 $ 271 $ 154 $ 52,973 $ 53,398 December 31, 2022 Business loans: Commercial $ 238 $ 13 $ 20 $ 271 $ 142 $ 30,496 $ 30,909 Real estate construction: Commercial Real Estate business line (a) — — — — — 2,505 2,505 Other business lines (b) 2 — — 2 3 595 600 Total real estate construction 2 — — 2 3 3,100 3,105 Commercial mortgage: Commercial Real Estate business line (a) — 6 — 6 1 4,674 4,681 Other business lines (b) 64 5 3 72 22 8,531 8,625 Total commercial mortgage 64 11 3 78 23 13,205 13,306 Lease financing 6 — — 6 — 754 760 International — 9 — 9 3 1,185 1,197 Total business loans 310 33 23 366 171 48,740 49,277 Retail loans: Residential mortgage 22 — — 22 53 1,739 1,814 Consumer: Home equity 4 3 — 7 15 1,754 1,776 Other consumer 5 1 — 6 1 528 535 Total consumer 9 4 — 13 16 2,282 2,311 Total retail loans 31 4 — 35 69 4,021 4,125 Total loans $ 341 $ 37 $ 23 $ 401 $ 240 $ 52,761 $ 53,402 (a) Primarily loans to real estate developers. (b) Primarily loans secured by owner-occupied real estate.
Loans By Credit Quality Indicator and Vintage Year	The following table presents loans by credit quality indicator and vintage year. Credit quality indicator is based on internal risk ratings assigned to each business loan at the time of approval and subjected to subsequent reviews, generally at least annually, and to pools of retail loans with similar risk characteristics. Vintage year is the year of origination or major modification. September 30, 2023 Vintage Year (in millions) 2023 2022 2021 2020 2019 Prior Revolvers Revolvers Converted to Term Total Business loans: Commercial: Pass (a) $ 2,538 $ 3,241 $ 2,584 $ 630 $ 715 $ 1,130 $ 16,668 $ 12 $ 27,518 Criticized (b) 21 142 291 53 93 77 811 1 1,489 Total commercial 2,559 3,383 2,875 683 808 1,207 17,479 13 29,007 Commercial gross charge-offs 1 3 2 1 8 11 3 — 29 Real estate construction Pass (a) 360 1,859 1,513 373 65 49 254 — 4,473 Criticized (b) — 29 34 2 6 — 1 — 72 Total real estate construction 360 1,888 1,547 375 71 49 255 — 4,545 Real estate construction gross charge-offs — — — — — — — — — Commercial mortgage Pass (a) 1,403 3,251 2,287 1,810 1,014 2,518 819 — 13,102 Criticized (b) 1 92 68 11 265 182 — — 619 Total commercial mortgage 1,404 3,343 2,355 1,821 1,279 2,700 819 — 13,721 Commercial mortgage gross charge-offs — — — — 3 — — — 3 Lease financing Pass (a) 142 301 116 52 38 111 — — 760 Criticized (b) 5 8 3 2 7 5 — — 30 Total lease financing 147 309 119 54 45 116 — — 790 Lease financing gross charge-offs — — — — — — — — — International Pass (a) 280 168 101 39 80 5 491 — 1,164 Criticized (b) 7 2 — 1 — 11 9 — 30 Total international 287 170 101 40 80 16 500 — 1,194 International gross charge-offs 2 — — — — — — — 2 Total business loans 4,757 9,093 6,997 2,973 2,283 4,088 19,053 13 49,257 Retail loans: Residential mortgage Pass (a) 245 299 375 455 134 376 — — 1,884 Criticized (b) 2 — 1 — — 18 — — 21 Total residential mortgage 247 299 376 455 134 394 — — 1,905 Residential mortgage gross charge-offs — — — — — — — — — Consumer: Home equity Pass (a) — — — — — 8 1,677 53 1,738 Criticized (b) — — — — — — 24 2 26 Total home equity — — — — — 8 1,701 55 1,764 Home equity gross charge-offs — — — — — — 2 — 2 Other consumer Pass (a) 22 42 26 9 6 7 357 — 469 Criticized (b) — — — — — 3 — — 3 Total other consumer 22 42 26 9 6 10 357 — 472 Other consumer gross charge-offs — — — — 1 — — — 1 Total consumer 22 42 26 9 6 18 2,058 55 2,236 Total retail loans 269 341 402 464 140 412 2,058 55 4,141 Total loans $ 5,026 $ 9,434 $ 7,399 $ 3,437 $ 2,423 $ 4,500 $ 21,111 $ 68 $ 53,398 December 31, 2022 Vintage Year 2022 2021 2020 2019 2018 Prior Revolvers Revolvers Converted to Term Total Business loans: Commercial: Pass (a) $ 3,946 $ 3,509 $ 917 $ 1,041 $ 598 $ 1,030 $ 18,604 $ 9 $ 29,654 Criticized (b) 75 274 81 69 45 78 632 1 1,255 Total commercial 4,021 3,783 998 1,110 643 1,108 19,236 10 30,909 Real estate construction: Pass (a) 836 1,134 633 162 102 28 207 — 3,102 Criticized (b) — — 3 — — — — — 3 Total real estate construction 836 1,134 636 162 102 28 207 — 3,105 Commercial mortgage: Pass (a) 3,349 2,501 1,825 1,394 1,050 2,182 838 — 13,139 Criticized (b) 7 5 7 32 31 75 10 — 167 Total commercial mortgage 3,356 2,506 1,832 1,426 1,081 2,257 848 — 13,306 Lease financing Pass (a) 316 140 64 47 37 130 — — 734 Criticized (b) 10 — 2 8 5 1 — — 26 Total lease financing 326 140 66 55 42 131 — — 760 International Pass (a) 317 161 55 88 19 14 498 — 1,152 Criticized (b) 12 — 3 — 3 10 17 — 45 Total international 329 161 58 88 22 24 515 — 1,197 Total business loans 8,868 7,724 3,590 2,841 1,890 3,548 20,806 10 49,277 Retail loans: Residential mortgage Pass (a) 327 398 480 133 68 355 — — 1,761 Criticized (b) 4 — — 9 1 39 — — 53 Total residential mortgage 331 398 480 142 69 394 — — 1,814 Consumer: Home equity Pass (a) — — — — — 9 1,708 40 1,757 Criticized (b) — — — — — — 17 2 19 Total home equity — — — — — 9 1,725 42 1,776 Other consumer Pass (a) 69 38 50 8 1 10 355 — 531 Criticized (b) — — — 1 — — 3 — 4 Total other consumer 69 38 50 9 1 10 358 — 535 Total consumer 69 38 50 9 1 19 2,083 42 2,311 Total retail loans 400 436 530 151 70 413 2,083 42 4,125 Total loans $ 9,268 $ 8,160 $ 4,120 $ 2,992 $ 1,960 $ 3,961 $ 22,889 $ 52 $ 53,402 (a) Includes all loans not included in the categories of special mention, substandard or nonaccrual. (b) Includes loans with an internal rating of special mention, substandard loans for which the accrual of interest has not been discontinued and nonaccrual loans. Special mention loans have potential credit weaknesses that deserve management’s close attention, such as loans to borrowers who may be experiencing financial difficulties that may result in deterioration of repayment prospects from the borrower at some future date. Accruing substandard loans have a well-defined weakness, or weaknesses, such as loans to borrowers who may be experiencing losses from operations or inadequate liquidity of a degree and duration that jeopardizes the orderly repayment of the loan. Substandard loans are also distinguished by the distinct possibility of loss in the future if these weaknesses are not corrected. Nonaccrual loans are loans for which the accrual of interest has been discontinued. For further information regarding nonaccrual loans, refer to the Nonperforming Assets subheading in Note 1 - Basis of Presentation and Accounting Policies on page F-49 in the Corporation's 2022 Annual Report. These categories are generally consistent with the "special mention" and "substandard" categories as defined by regulatory authorities. A minority of nonaccrual loans are consistent with the "doubtful" category.
Changes In The Allowance For Loan Losses	The following table details the changes in the allowance for credit losses. 2023 2022 (in millions) Business Loans Retail Loans Total Business Loans Retail Loans Total Three Months Ended September 30 Balance at beginning of period: Allowance for loan losses $ 614 $ 70 $ 684 $ 502 $ 61 $ 563 Allowance for credit losses on lending-related commitments 34 10 44 34 12 46 Allowance for credit losses 648 80 728 536 73 609 Loan charge-offs (13) (1) (14) (25) (1) (26) Recoveries on loans previously charged-off 7 1 8 12 1 13 Net loan (charge-offs) recoveries (6) — (6) (13) — (13) Provision for credit losses: Provision for loan losses 18 (2) 16 24 2 26 Provision for credit losses on lending-related commitments (1) (1) (2) 2 — 2 Provision for credit losses 17 (3) 14 26 2 28 Balance at end of period: Allowance for loan losses 626 68 694 513 63 576 Allowance for credit losses on lending-related commitments 33 9 42 36 12 48 Allowance for credit losses $ 659 $ 77 $ 736 $ 549 $ 75 $ 624 Nine Months Ended September 30 Balance at beginning of period Allowance for loan losses $ 541 $ 69 $ 610 $ 531 $ 57 $ 588 Allowance for credit losses on lending-related commitments 40 11 51 24 6 30 Allowance for credit losses 581 80 661 555 63 618 Loan charge-offs (34) (3) (37) (55) (2) (57) Recoveries on loans previously charged-off 33 2 35 33 3 36 Net loan (charge-offs) recoveries (1) (1) (2) (22) 1 (21) Provision for credit losses: Provision for loan losses 86 — 86 4 5 9 Provision for credit losses on lending-related commitments (7) (2) (9) 12 6 18 Provision for credit losses 79 (2) 77 16 11 27 Balance at end of period: Allowance for loan losses 626 68 694 513 63 576 Allowance for credit losses on lending-related commitments 33 9 42 36 12 48 Allowance for credit losses $ 659 $ 77 $ 736 $ 549 $ 75 $ 624 Allowance for loan losses as a percentage of total loans 1.27 % 1.62 % 1.30 % 1.07 % 1.58 % 1.11 % Allowance for credit losses as a percentage of total loans 1.34 1.84 1.38 1.15 1.88 1.21
Financing Receivable, Nonaccrual	The following table presents additional information regarding nonaccrual loans. Interest income of $2 million and $3 million was recognized on nonaccrual loans for the three-month periods ended September 30, 2023 and 2022, respectively. For the nine months ended September 30, 2023 and 2022, the Corporation recognized interest income of $8 million and $7 million, respectively, on nonaccrual loans. (in millions) Nonaccrual Loans with No Related Allowance Nonaccrual Loans with Related Allowance Total Nonaccrual Loans September 30, 2023 Business loans: Commercial $ 38 $ 45 $ 83 Real estate construction: Other business lines (a) — 2 2 Commercial mortgage: Other business lines (a) 18 12 30 Total commercial mortgage 18 12 30 International — 3 3 Total business loans 56 62 118 Retail loans: Residential mortgage 19 — 19 Consumer: Home equity 17 — 17 Total retail loans 36 — 36 Total nonaccrual loans $ 92 $ 62 $ 154 December 31, 2022 Business loans: Commercial $ 64 $ 78 $ 142 Real estate construction: Other business lines (a) — 3 3 Commercial mortgage: Commercial Real Estate business line (b) — 1 1 Other business lines (a) 4 18 22 Total commercial mortgage 4 19 23 International 3 — 3 Total business loans 71 100 171 Retail loans: Residential mortgage 53 — 53 Consumer: Home equity 15 — 15 Other consumer 1 — 1 Total consumer 16 — 16 Total retail loans 69 — 69 Total nonaccrual loans $ 140 $ 100 $ 240 (a) Primarily loans secured by owner-occupied real estate. (b) Primarily loans to real estate developers.
Troubled Debt Restructurings By Type Of Modification	The following table displays the amortized cost basis at September 30, 2023 of loan modifications made to borrowers experiencing financial difficulty that were restructured during the three- and nine-month periods ended September 30, 2023 by type of modification. (in millions) Term Extension (a) Payment Delay (a) Interest Rate Reduction Combinations (b) Total Percent of Total Class Three Months Ended September 30, 2023 Business loans: Commercial $ 54 $ — $ 4 $ — $ 58 0.20 % Real estate construction: Other business lines (c) 8 — — — 8 1.44 Total real estate construction 8 — — — 8 0.17 Commercial mortgage: Other business lines (d) 1 — — 6 7 0.08 Total commercial mortgage 1 — — 6 7 0.05 Total business loans 63 — 4 6 73 0.15 Retail loans: Consumer: Home equity — — 1 1 2 0.11 Total consumer — — 1 1 2 0.09 Total retail loans — — 1 1 2 0.05 Total loans $ 63 $ — $ 5 $ 7 $ 75 0.14 % Nine Months Ended September 30, 2023 Business loans: Commercial $ 87 $ 21 $ 4 $ 1 $ 113 0.39 % Real estate construction: Other business lines (c) 8 — — — 8 1.44 Total real estate construction 8 — — — 8 0.17 Commercial mortgage: Other business lines (d) 4 — 1 11 16 0.18 Total commercial mortgage 4 — 1 11 16 0.12 Total business loans 99 21 5 12 137 0.28 Retail loans: Consumer: Home equity 1 — 1 1 3 0.15 Total consumer 1 — 1 1 3 0.13 Total retail loans 1 — 1 1 3 0.07 Total loans $ 100 $ 21 $ 6 $ 13 $ 140 0.26 % (a) Represents loan balances where terms were extended or payments were delayed by a more than an insignificant time period, typically more than 180 days, at or above contractual interest rates. See Note 1 to the consolidated financial statements for further information. (b) Relates to FDMs where more than one type of modification was made. For the three- and nine-month periods ended September 30, 2023, this primarily related to a modification where the interest rate was reduced and the term was extended. (c) Primarily loans to real estate developers. (d) Primarily loans secured by owner-occupied real estate. The following table summarizes the financial impacts of loan modifications made to specific loans during the three- and nine-month periods ended September 30, 2023. Weighted-Average Term Extension Weighted-Average Interest Rate Reduction Three Months Ended September 30, 2023 Business loans: Commercial 7.4 (0.50) % Real estate construction: Other business lines (a) 6.0 — Total real estate construction 6.0 — Commercial mortgage: Other business lines (b) 8.7 (1.00) Total commercial mortgage 8.7 (1.00) Total business loans 7.4 (0.81) Retail loans: Consumer: Home equity 131.1 (2.85) Total consumer 131.1 (2.85) Total retail loans 131.1 (2.85) Total loans 9.2 (1.09) % Nine Months Ended September 30, 2023 Business loans: Commercial 8.0 (0.49) % Real estate construction: Other business lines (a) 6.0 — Total real estate construction 6.0 — Commercial mortgage: Other business lines (b) 22.0 (0.79) Total commercial mortgage 22.0 (0.79) Total business loans 9.7 (0.70) Retail loans: Consumer: Home equity 129.0 (2.64) Total consumer 129.0 (2.64) Total retail loans 129.0 (2.64) Total loans 11.0 (0.89) % (a) Primarily loans to real estate developers. (b) Primarily loans secured by owner-occupied real estate. The following table details the amortized cost basis at September 30, 2022 of loans considered to be TDRs that were restructured during the three- and nine-month periods ended September 30, 2022 by type of modification. In cases of loans with more than one type of modification, the loans were categorized based on the most significant modification. Type of Modification (in millions) Principal Deferrals (a) Interest Rate Reductions Total Modifications Three Months Ended September 30, 2022 Business loans: Commercial $ 27 $ — $ 27 Commercial mortgage: Other business lines (b) 7 — 7 Total business loans 34 — 34 Retail loans: Residential mortgage — 5 5 Total loans $ 34 $ 5 $ 39 Nine Months Ended September 30, 2022 Business loans: Commercial $ 34 $ — $ 34 Real estate construction: Other business lines (b) 3 — 3 Commercial mortgage: Other business lines (b) 15 — 15 Total business loans 52 — 52 Retail loans: Residential mortgage — 5 5 Consumer: Home equity (c) 1 — 1 Total loans $ 53 $ 5 $ 58 (a) Primarily represents loan balances where terms were extended by more than an insignificant time period, typically more than 180 days, at or above contractual interest rates. Also includes commercial loans restructured in bankruptcy. (b) Primarily loans secured by owner-occupied real estate. (c) Includes bankruptcy loans for which the court has discharged the borrower's obligation and the borrower has not reaffirmed the debt.

Derivative And Credit-Related_2

Derivative And Credit-Related Financial Instruments (Tables)	9 Months Ended
	Sep. 30, 2023
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule Of Derivative Instruments	The following table presents the composition of the Corporation’s derivative instruments held or issued for risk management purposes or in connection with customer-initiated and other activities at September 30, 2023 and December 31, 2022. The table excludes a derivative related to the Corporation's 2008 sale of its remaining ownership of Visa shares and includes accrued interest receivable and payable. September 30, 2023 December 31, 2022 Fair Value Fair Value (in millions) Notional/ Gross Derivative Assets Gross Derivative Liabilities Notional/ Gross Derivative Assets Gross Derivative Liabilities Risk management purposes Derivatives designated as hedging instruments Interest rate contracts: Fair value swaps - receive fixed/pay floating $ 6,300 $ — $ — $ 3,150 $ — $ — Cash flow swaps - receive fixed/pay floating (b) 25,100 — 2 26,600 — 50 Derivatives used as economic hedges Foreign exchange contracts: Spot, forwards and swaps 562 2 1 392 1 3 Total risk management purposes 31,962 2 3 30,142 1 53 Customer-initiated and other activities Interest rate contracts: Caps and floors written 1,459 — 24 924 — 25 Caps and floors purchased 1,459 24 — 924 25 — Swaps 19,347 279 634 18,450 181 569 Total interest rate contracts 22,265 303 658 20,298 206 594 Energy contracts: Caps and floors written 4,034 1 319 4,051 — 430 Caps and floors purchased 4,034 320 1 4,051 431 — Swaps 6,805 504 485 6,419 589 576 Total energy contracts 14,873 825 805 14,521 1,020 1,006 Foreign exchange contracts: Spot, forwards, options and swaps 2,581 48 42 2,704 52 42 Total customer-initiated and other activities 39,719 1,176 1,505 37,523 1,278 1,642 Total gross derivatives $ 71,681 1,178 1,508 $ 67,665 1,279 1,695 Amounts offset in the Consolidated Balance Sheets: Netting adjustment - Offsetting derivative assets/liabilities (446) (446) (644) (644) Netting adjustment - Cash collateral received/posted (155) (12) (180) (4) Net derivatives included in the Consolidated Balance Sheets (c) 577 1,050 455 1,047 Amounts not offset in the Consolidated Balance Sheets: Marketable securities pledged under bilateral collateral agreements (295) (207) (70) (202) Net derivatives after deducting amounts not offset in the Consolidated Balance Sheets $ 282 $ 843 $ 385 $ 845 (a) Notional or contractual amounts, which represent the extent of involvement in the derivatives market, are used to determine the contractual cash flows required in accordance with the terms of the agreement. These amounts are typically not exchanged, significantly exceed amounts subject to credit or market risk and are not reflected in the Consolidated Balance Sheets. (b) September 30, 2023 included $3.3 billion of forward starting swaps that will become effective on their contractual start dates in 2023 and 2024. (c) Net derivative assets are included in accrued income and other assets and net derivative liabilities are included in accrued expenses and other liabilities on the Consolidated Balance Sheets. Included in the fair value of net derivative assets and net derivative liabilities are credit valuation adjustments reflecting counterparty credit risk and credit risk of the Corporation. The fair value of net derivative assets included credit valuation adjustments for counterparty credit risk of $2 million at both September 30, 2023 and December 31, 2022.
Schedule of the Effects of Fair Value Hedging on the Consolidated Statements of Comprehensive Income	The following table details the effects of fair value hedging on the Consolidated Statements of Comprehensive Income. Interest on Medium- and Long-Term Debt Three Months Ended September 30, Nine Months Ended September 30, (in millions) 2023 2022 2023 2022 Total interest on medium- and long-term debt (a) $ 106 $ 26 $ 273 $ 47 Fair value hedging relationships: Interest rate contracts: Hedged items 74 28 194 79 Derivatives designated as hedging instruments 32 (2) 79 (32) (a) Includes the effects of hedging.
Schedule Of Weighted Average Maturity And Interest Rates On Risk Management Cash Flow Swaps	The following tables summarize the expected weighted average remaining maturity of the notional amount of risk management interest rate swaps, the weighted average interest rates associated with amounts expected to be received or paid on interest rate swap agreements, and for fair value swaps, the weighted average carrying amount of the related hedged items, as of September 30, 2023 and December 31, 2022. Cash flow swaps - receive fixed/pay floating rate on variable-rate loans September 30, 2023 December 31, 2022 Weighted average: Time to maturity (in years) 4.1 4.6 Receive rate (a) 2.38 % 2.35 % Pay rate (a), (b) 5.36 4.07 (a) Excludes forward starting swaps not effective as of the period shown. September 30, 2023 excluded $3.3 billion of forward starting swaps. December 31, 2022 excluded $4.6 billion of forward starting swaps.
Schedule Of Weighted Average Maturity And Interest Rates On Risk Management Interest Rate Swaps	Fair value swaps - receive fixed/pay floating rate on medium- and long-term debt (dollar amounts in millions) September 30, 2023 December 31, 2022 Carrying value of hedged items (a) $ 6,049 $ 3,024 Weighted average: Time to maturity (in years) 3.5 3.9 Receive rate (b) 3.67 % 3.52 % Pay rate (b) 5.39 4.90 (a) Included $(250) million and $(124) million of cumulative hedging adjustments at September 30, 2023 and December 31, 2022, respectively, which included $3 million and $4 million, respectively, of hedging adjustment on a discontinued hedging relationship.
Schedule Of Net Gains Recognized In Income On Customer-Initiated Derivatives	The net gains recognized in income on customer-initiated derivative instruments, net of the impact of offsetting positions included in capital markets income, were as follows: Three Months Ended September 30, Nine Months Ended September 30, (in millions) 2023 2022 2023 2022 Interest rate contracts $ 5 $ 9 $ 17 $ 28 Energy contracts 4 14 17 22 Foreign exchange contracts 12 12 40 36 Total $ 21 $ 35 $ 74 $ 86
Schedule Of Financial Instruments With Off-Balance Sheet Credit Risk	The Corporation’s credit risk associated with these instruments is represented by the contractual amounts indicated in the following table. (in millions) September 30, 2023 December 31, 2022 Unused commitments to extend credit: Commercial and other $ 28,357 $ 30,800 Bankcard, revolving credit and home equity loan commitments 4,169 4,017 Total unused commitments to extend credit $ 32,526 $ 34,817 Standby letters of credit $ 3,521 $ 3,712 Commercial letters of credit 42 39
Summary Of Criticized Letters Of Credit	The following table presents a summary of criticized standby and commercial letters of credit at September 30, 2023 and December 31, 2022. The Corporation's criticized list is consistent with the Special Mention, Substandard and Doubtful categories defined by regulatory authorities. The Corporation manages credit risk through underwriting, periodically reviewing and approving its credit exposures using Board committee approved credit policies and guidelines. (dollar amounts in millions) September 30, 2023 December 31, 2022 Total criticized standby and commercial letters of credit $ 52 $ 37 As a percentage of total outstanding standby and commercial letters of credit 1.5 % 1.0 %

Variable Interest Entities (V_2

Variable Interest Entities (VIEs) (Tables)	9 Months Ended
	Sep. 30, 2023
Variable Interest Entity, Not Primary Beneficiary, Disclosures [Abstract]
Impact of VIEs on the Consolidated Statements of Income	The following table summarizes the impact of these tax credit entities on the Corporation’s Consolidated Statements of Comprehensive Income. Three Months Ended September 30, Nine Months Ended September 30, (in millions) 2023 2022 2023 2022 Provision for income taxes: Amortization of LIHTC investments $ 17 $ 19 $ 51 $ 54 Low income housing tax credits (16) (18) (48) (51) Other tax benefits related to tax credit entities (5) (5) (15) (14) Total provision for income taxes $ (4) $ (4) $ (12) $ (11)

Medium- And Long-Term Debt (Tab

Medium- And Long-Term Debt (Tables)	9 Months Ended
	Sep. 30, 2023
Debt Disclosure [Abstract]
Schedule Of Medium- And Long-Term Debt	Medium- and long-term debt is summarized as follows: (in millions) September 30, 2023 December 31, 2022 Parent company Subordinated notes: 3.80% subordinated notes due 2026 (a) $ 235 $ 237 Medium- and long-term notes: 3.70% notes due July 2023 — 841 4.00% notes due 2029 (a) 502 515 Total medium- and long-term notes 502 1,356 Total parent company 737 1,593 Subsidiaries Subordinated notes: 4.00% subordinated notes due 2025 (a) 331 331 7.88% subordinated notes due 2026 (a) 159 165 5.33% subordinated notes due 2033 (a) 437 459 Total subordinated notes 927 955 Medium- and long-term notes: 2.50% notes due 2024 (a) 484 476 Total medium- and long-term notes 484 476 Federal Home Loan Bank advances: 5.07% advance due 2025 (a) 986 — 4.79% advance due 2026 (a) 978 — 4.49% advance due 2027 (a) 973 — 4.49% advance due 2028 (a) 964 — Total Federal Home Loan Bank advances: 3,901 — Total subsidiaries 5,312 1,431 Total medium- and long-term debt $ 6,049 $ 3,024 (a) The fixed interest rates on these notes have been swapped to a variable rate and designated in a hedging relationship. Accordingly, carrying value has been adjusted to reflect the change in the fair value of the debt as a result of changes in the benchmark rate.

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Loss (Tables)	9 Months Ended
	Sep. 30, 2023
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Schedule Of Accumulated Other Comprehensive Loss	The following table presents a reconciliation of the changes in the components of accumulated other comprehensive loss and details the components of other comprehensive loss for the nine months ended September 30, 2023 and 2022, including the amount of income tax benefit allocated to each component of other comprehensive loss. Nine Months Ended September 30, (in millions) 2023 2022 Accumulated net unrealized losses on investment securities: Balance at beginning of period, net of tax $ (2,319) $ (99) Net unrealized losses arising during the period (613) (2,977) Less: Benefit for income taxes (144) (701) Change in net unrealized losses on investment securities, net of tax (469) (2,276) Balance at end of period, net of tax $ (2,788) $ (2,375) Accumulated net losses on cash flow hedges: Balance at beginning of period, net of tax $ (942) $ 55 Net cash flow hedge losses arising during the period (871) (1,397) Less: Benefit for income taxes (204) (329) Change in net cash flow hedge losses arising during the period, net of tax (667) (1,068) Less: Net cash flow (losses) gains included in interest and fees on loans (432) 45 Less: (Benefit) provision for income taxes (101) 11 Reclassification adjustment for net cash flow hedge (losses) gains included in net income, net of tax (331) 34 Change in net cash flow hedge losses, net of tax (336) (1,102) Balance at end of period, net of tax (a) $ (1,278) $ (1,047) Accumulated defined benefit pension and other postretirement plans adjustment: Balance at beginning of period, net of tax $ (481) $ (168) Amounts recognized in other noninterest expenses: Amortization of actuarial net loss 27 21 Amortization of prior service credit (17) (18) Total amounts recognized in other noninterest expenses 10 3 Less: Provision for income taxes 3 — Adjustment for amounts recognized as components of net periodic benefit credit during the period, net of tax 7 3 Change in defined benefit pension and other postretirement plans adjustment, net of tax 7 3 Balance at end of period, net of tax $ (474) $ (165) Total accumulated other comprehensive loss at end of period, net of tax $ (4,540) $ (3,587) (a) The Corporation expects to reclassify $507 million of losses, net of tax, from accumulated other comprehensive loss to earnings over the next twelve months if interest yield curves and notional amounts remain at September 30, 2023 levels.

Net Income Per Common Share (Ta

Net Income Per Common Share (Tables)	9 Months Ended
	Sep. 30, 2023
Earnings Per Share [Abstract]
Basic And Diluted Net Income Per Common Share	Basic and diluted net income per common share are presented in the following table. Three Months Ended September 30, Nine Months Ended September 30, (in millions, except per share data) 2023 2022 2023 2022 Basic and diluted Net income $ 251 $ 351 $ 848 $ 801 Less: Income allocated to participating securities 1 2 4 4 Preferred stock dividends 6 6 17 17 Net income attributable to common shares $ 244 $ 343 $ 827 $ 780 Basic average common shares 132 131 132 131 Basic net income per common share $ 1.85 $ 2.63 $ 6.27 $ 5.96 Basic average common shares 132 131 132 131 Dilutive common stock equivalents: Net effect of the assumed exercise of stock awards 1 1 1 2 Diluted average common shares 133 132 133 133 Diluted net income per common share $ 1.84 $ 2.60 $ 6.24 $ 5.88
Schedule of Average Shares Excluded From Diluted Net Income Per Common Share Computation	The following average shares related to outstanding options to purchase shares of common stock that were not included in the computation of diluted net income per common share because the options were anti-dilutive for the period. Three Months Ended September 30, Nine Months Ended September 30, (average outstanding options in thousands) 2023 2022 2023 2022 Average outstanding options 1,633 373 1,540 337 Range of exercise prices $49.20 - $95.25 $79.01 - $95.25 $49.20 - $95.25 $70.18 - $95.25

Employee Benefit Plans (Tables)

Employee Benefit Plans (Tables)	9 Months Ended
	Sep. 30, 2023
Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Abstract]
Components of Net Periodic Benefit Cost	The components of net periodic benefit cost (credit) for the Corporation's qualified pension plan, non-qualified pension plan and postretirement benefit plan are as follows. Qualified Defined Benefit Pension Plan Three Months Ended September 30, Nine Months Ended September 30, (in millions) 2023 2022 2023 2022 Service cost $ 8 $ 9 $ 23 $ 28 Other components of net benefit credit: Interest cost 21 16 64 47 Expected return on plan assets (41) (51) (124) (151) Amortization of prior service credit (3) (4) (10) (11) Amortization of net loss 8 4 24 14 Total other components of net benefit credit (15) (35) (46) (101) Net periodic defined benefit credit $ (7) $ (26) $ (23) $ (73) Non-Qualified Defined Benefit Pension Plan Three Months Ended September 30, Nine Months Ended September 30, (in millions) 2023 2022 2023 2022 Service cost $ 1 $ 1 $ 2 $ 2 Other components of net benefit cost: Interest cost 2 1 6 4 Amortization of prior service credit (3) (2) (7) (7) Amortization of net loss 1 3 3 7 Total other components of net benefit cost — 2 2 4 Net periodic defined benefit cost $ 1 $ 3 $ 4 $ 6 Postretirement Benefit Plan Three Months Ended September 30, Nine Months Ended September 30, (in millions) 2023 2022 2023 2022 Other components of net benefit credit: Interest cost $ 1 $ 1 $ 1 $ 1 Expected return on plan assets (1) (1) (2) (2) Net periodic defined benefit credit $ — $ — $ (1) $ (1)

Strategic Lines of Business (Ta

Strategic Lines of Business (Tables)	9 Months Ended
	Sep. 30, 2023
Segment Reporting [Abstract]
Business Segment Financial Results	Business segment financial results were as follows: Commercial Retail Wealth Management Finance Other Total (dollar amounts in millions) Three Months Ended September 30, 2023 Earnings summary: Net interest income (expense) $ 505 $ 208 $ 49 $ (187) $ 26 $ 601 Provision for credit losses 22 — (9) — 1 14 Noninterest income 150 31 78 40 (4) 295 Noninterest expenses 257 175 102 1 20 555 Provision (benefit) for income taxes 89 16 9 (37) (1) 76 Net income (loss) $ 287 $ 48 $ 25 $ (111) $ 2 $ 251 Net charge-offs $ 6 $ — $ — $ — $ — $ 6 Selected average balances: Assets $ 49,459 $ 2,985 $ 5,557 $ 19,832 $ 11,317 $ 89,150 Loans 46,477 2,250 5,227 — 33 53,987 Deposits 31,868 24,034 3,950 5,711 320 65,883 Statistical data: Return on average assets (a) 2.30 % 0.78 % 1.81 % n/m n/m 1.12 % Efficiency ratio (b) 39.34 72.70 80.01 n/m n/m 61.86 Three Months Ended September 30, 2022 Earnings summary: Net interest income (expense) $ 478 $ 188 $ 55 $ (22) $ 8 $ 707 Provision for credit losses 16 2 5 — 5 28 Noninterest income 169 29 77 6 (3) 278 Noninterest expenses 242 170 87 — 3 502 Provision (benefit) for income taxes 94 11 10 (6) (5) 104 Net income (loss) $ 295 $ 34 $ 30 $ (10) $ 2 $ 351 Net charge-offs $ 13 $ — $ — $ — $ — $ 13 Selected average balances: Assets $ 48,323 $ 2,799 $ 5,097 $ 22,140 $ 7,063 $ 85,422 Loans 44,043 2,066 4,973 — 31 51,113 Deposits 41,471 26,665 5,293 144 403 73,976 Statistical data: Return on average assets (a) 2.42 % 0.51 % 2.08 % n/m n/m 1.63 % Efficiency ratio (b) 37.54 77.00 65.86 n/m n/m 50.75 (a) Return on average assets is calculated based on the greater of average assets or average liabilities and attributed equity. (b) Noninterest expenses as a percentage of the sum of net interest income and noninterest income excluding net gains (losses) from securities, a derivative contract tied to the conversion rate of Visa Class B shares and changes in the value of shares obtained through monetization of warrants. n/m – not meaningful (dollar amounts in millions) Commercial Retail Wealth Management Finance Other Total Nine Months Ended September 30, 2023 Earnings summary: Net interest income (expense) $ 1,550 $ 644 $ 158 $ (493) $ 71 $ 1,930 Provision for credit losses 80 2 (9) — 4 77 Noninterest income 460 89 233 93 5 880 Noninterest expenses 757 511 297 4 72 1,641 Provision (benefit) for income taxes 270 53 25 (101) (3) 244 Net income (loss) $ 903 $ 167 $ 78 $ (303) $ 3 $ 848 Net charge-offs $ 1 $ — $ 1 $ — $ — $ 2 Selected average balances: Assets $ 49,906 $ 2,944 $ 5,510 $ 20,469 $ 9,400 $ 88,229 Loans 46,797 2,223 5,256 — — 54,276 Deposits 33,204 24,394 4,200 3,858 353 66,009 Statistical data: Return on average assets (a) 2.42 % 0.89 % 1.92 % n/m n/m 1.29 % Efficiency ratio (b) 37.64 69.23 75.70 n/m n/m 58.26 Nine Months Ended September 30, 2022 Earnings summary: Net interest income (expense) $ 1,232 $ 464 $ 138 $ (118) $ 8 $ 1,724 Provision for credit losses 1 7 11 — 8 27 Noninterest income 461 89 226 36 (22) 790 Noninterest expenses 712 508 259 — (22) 1,457 Provision (benefit) for income taxes 229 9 23 (25) (7) 229 Net income (loss) $ 751 $ 29 $ 71 $ (57) $ 7 $ 801 Net charge-offs (recoveries) $ 24 $ (1) $ (2) $ — $ — $ 21 Selected average balances: Assets $ 46,992 $ 2,791 $ 4,974 $ 20,831 $ 12,852 $ 88,440 Loans 42,928 2,031 4,841 — 15 49,815 Deposits 43,733 26,890 5,520 300 428 76,871 Statistical data: Return on average assets (a) 2.07 % 0.15 % 1.61 % n/m n/m 1.21 % Efficiency ratio (b) 41.95 90.82 71.08 n/m n/m 57.67 (a) Return on average assets is calculated based on the greater of average assets or average liabilities and attributed equity. (b) Noninterest expenses as a percentage of the sum of net interest income and noninterest income excluding net gains (losses) from securities, a derivative contract tied to the conversion rate of Visa Class B shares and changes in the value of shares obtained through monetization of warrants. n/m – not meaningful

Revenue From Contracts with C_2

Revenue From Contracts with Customers (Tables)	9 Months Ended
	Sep. 30, 2023
Revenue from Contract with Customer [Abstract]
Composition of Revenue from Contracts with Customers	The following table presents the composition of revenue from contracts with customers, segregated from other sources of noninterest income, by business segment. Commercial Retail Wealth Management Finance & Other Total (in millions) Three Months Ended September 30, 2023 Revenue from contracts with customers: Card fees $ 58 $ 12 $ 1 $ — $ 71 Fiduciary income 1 — 58 — 59 Service charges on deposit accounts 32 14 1 — 47 Commercial loan servicing fees (a) 3 — — — 3 Capital markets income (b) 4 — — — 4 Brokerage fees — — 8 (2) 6 Other noninterest income (b) — 4 7 — 11 Total revenue from contracts with customers 98 30 75 (2) 201 Other sources of noninterest income 52 1 3 38 94 Total noninterest income $ 150 $ 31 $ 78 $ 36 $ 295 Three Months Ended September 30, 2022 Revenue from contracts with customers: Card fees $ 56 $ 10 $ 1 $ — $ 67 Fiduciary income — — 58 — 58 Service charges on deposit accounts 34 15 1 — 50 Commercial loan servicing fees (a) (c) 3 — — — 3 Capital markets income (b) (c) 3 — — — 3 Brokerage fees — — 6 — 6 Other noninterest income (b) (c) 1 3 7 — 11 Total revenue from contracts with customers 97 28 73 — 198 Other sources of noninterest income 72 1 4 3 80 Total noninterest income $ 169 $ 29 $ 77 $ 3 $ 278 Nine Months Ended September 30, 2023 Revenue from contracts with customers: Card fees $ 175 $ 34 $ 3 $ — $ 212 Fiduciary income 1 — 178 — 179 Service charges on deposit accounts 95 41 4 — 140 Commercial loan servicing fees (a) 9 — — — 9 Capital markets income (b) 12 — — — 12 Brokerage fees — — 24 (2) 22 Other noninterest income (b) 1 10 20 1 32 Total revenue from contracts with customers 293 85 229 (1) 606 Other sources of noninterest income 167 4 4 99 274 Total noninterest income $ 460 $ 89 $ 233 $ 98 $ 880 Nine Months Ended September 30, 2022 Revenue from contracts with customers: Card fees $ 171 $ 31 $ 3 $ — $ 205 Fiduciary income — — 178 — 178 Service charges on deposit accounts 101 43 4 — 148 Commercial loan servicing fees (a) (c) 9 — — — 9 Capital markets income (b) (c) 8 — — — 8 Brokerage fees — — 14 — 14 Other noninterest income (b) (c) 3 13 18 — 34 Total revenue from contracts with customers 292 87 217 — 596 Other sources of noninterest income 169 2 9 14 194 Total noninterest income $ 461 $ 89 $ 226 $ 14 $ 790 (a) Included in commercial lending fees on the Consolidated Statements of Comprehensive Income. (b) Excludes derivative, warrant and other miscellaneous income.

Fair Value Measurements (Assets

Fair Value Measurements (Assets And Liabilities Recorded At Fair Value On A Recurring Basis) (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale:	$ 16,323	$ 19,012
Derivative assets:	1,178	1,279
Total derivative liabilities	1,508	1,695
U.S. Treasury securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale:	1,681	2,664
Residential mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale:	10,174	11,655
Commercial mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale:	4,468	4,693
Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale:	16,323	19,012
Derivative assets:	1,178	1,279
Total assets at fair value	17,643	20,427
Total derivative liabilities	1,521	1,707
Deferred compensation plan liabilities	97	92
Total liabilities at fair value	1,618	1,799
Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale:	1,681	2,664
Derivative assets:	0	0
Total assets at fair value	1,823	2,800
Total derivative liabilities	0	0
Deferred compensation plan liabilities	97	92
Total liabilities at fair value	97	92
Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale:	14,642	16,348
Derivative assets:	1,178	1,279
Total assets at fair value	15,820	17,627
Total derivative liabilities	1,508	1,695
Deferred compensation plan liabilities	0	0
Total liabilities at fair value	1,508	1,695
Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale:	0	0
Derivative assets:	0	0
Total assets at fair value	0	0
Total derivative liabilities	13	12
Deferred compensation plan liabilities	0	0
Total liabilities at fair value	13	12
Recurring | Interest rate contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets:	303	206
Total derivative liabilities	660	644
Recurring | Interest rate contracts | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets:	0	0
Total derivative liabilities	0	0
Recurring | Interest rate contracts | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets:	303	206
Total derivative liabilities	660	644
Recurring | Interest rate contracts | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets:	0	0
Total derivative liabilities	0	0
Recurring | Energy contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets:	825	1,020
Total derivative liabilities	805	1,006
Recurring | Energy contracts | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets:	0	0
Total derivative liabilities	0	0
Recurring | Energy contracts | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets:	825	1,020
Total derivative liabilities	805	1,006
Recurring | Energy contracts | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets:	0	0
Total derivative liabilities	0	0
Recurring | Foreign exchange contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets:	50	53
Total derivative liabilities	43	45
Recurring | Foreign exchange contracts | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets:	0	0
Total derivative liabilities	0	0
Recurring | Foreign exchange contracts | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets:	50	53
Total derivative liabilities	43	45
Recurring | Foreign exchange contracts | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets:	0	0
Total derivative liabilities	0	0
Recurring | Other financial derivative liabilities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total derivative liabilities	13	12
Recurring | Other financial derivative liabilities | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total derivative liabilities	0	0
Recurring | Other financial derivative liabilities | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total derivative liabilities	0	0
Recurring | Other financial derivative liabilities | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total derivative liabilities	13	12
Total liabilities at fair value	13	12
Recurring | Deferred compensation plan assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Deferred compensation plan assets	97	92
Recurring | Deferred compensation plan assets | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Deferred compensation plan assets	97	92
Recurring | Deferred compensation plan assets | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Deferred compensation plan assets	0	0
Recurring | Deferred compensation plan assets | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Deferred compensation plan assets	0	0
Recurring | Equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	45	44
Recurring | Equity securities | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	45	44
Recurring | Equity securities | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	0	0
Recurring | Equity securities | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	0	0
Recurring | U.S. Treasury securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale:	1,681	2,664
Recurring | U.S. Treasury securities | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale:	1,681	2,664
Recurring | U.S. Treasury securities | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale:	0	0
Recurring | U.S. Treasury securities | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale:	0	0
Recurring | Residential mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale:	10,174	11,655
Recurring | Residential mortgage-backed securities | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale:	0	0
Recurring | Residential mortgage-backed securities | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale:	10,174	11,655
Recurring | Residential mortgage-backed securities | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale:	0	0
Recurring | Commercial mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale:	4,468	4,693
Recurring | Commercial mortgage-backed securities | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale:	0	0
Recurring | Commercial mortgage-backed securities | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale:	4,468	4,693
Recurring | Commercial mortgage-backed securities | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available-for-sale:	$ 0	$ 0

Fair Value Measurements (Change

Fair Value Measurements (Changes In Level 3 Assets And Liabilities Measured At Fair Value On A Recurring Basis) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Interest rate contracts
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at Beginning of Period				$ 26
Realized Gains (Losses) (Pretax) Recorded in Earnings				0
Unrealized Gains (Losses) (Pretax) Recorded in Earnings				0
Settlements				(26)
Balance at End of Period		$ 0		0
Other financial derivative liabilities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at Beginning of Period	$ (14)	(12)	$ (12)	(13)
Realized Gains (Losses) (Pretax) Recorded in Earnings	0	0	0	0
Unrealized Gains (Losses) (Pretax) Recorded in Earnings	1	0	(1)	1
Settlements	0	0	0	0
Balance at End of Period	$ (13)	$ (12)	$ (13)	$ (12)

Fair Value Measurements (Asse_2

Fair Value Measurements (Assets And Liabilities Recorded At Fair Value On A Nonrecurring Basis) (Details) - Nonrecurring - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liabilities recorded at fair value	$ 0	$ 0
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total loans	34	66
Loans held-for-sale	236
Other real estate	5	9
Total assets at fair value	275	75
Commercial borrower | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total loans	27	53
Commercial borrower | Level 3 | International
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total loans	2
Commercial borrower | Real estate construction | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total loans	2	2
Commercial borrower | Commercial mortgage | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total loans	$ 3	$ 11

Fair Value Measurements (Estima

Fair Value Measurements (Estimated Fair Values Of Financial Instruments Not Recorded At Fair Value In Their Entirety On A Recurring Basis) (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and due from banks	$ 1,228	$ 1,758
Interest-bearing deposits with banks	6,884	4,524
Demand deposits (noninterest-bearing)	29,922	39,945
Customer certificates of deposit	3,401	1,762
Other time deposits	5,011	124
Total deposits	67,158	71,397
Medium- and long-term debt	6,049	3,024
Loans recorded at fair value	52,704	52,792
Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and due from banks	1,228	1,758
Interest-bearing deposits with banks	6,884	4,524
Other short-term investments	24	19
Loans held-for-sale	2	2
Total loans, net of allowance for loan losses	52,704	52,792
Customers’ liability on acceptances outstanding	1	3
Restricted equity investments	453	223
Nonmarketable equity securities	6	5
Demand deposits (noninterest-bearing)	29,922	39,945
Interest-bearing deposits	28,824	29,566
Customer certificates of deposit	3,401	1,762
Other time deposits	5,011	124
Total deposits	67,158	71,397
Short-term borrowings	4,812	3,211
Acceptances outstanding	1	3
Medium- and long-term debt	6,049	3,024
Credit-related financial instruments	(73)	(79)
Estimated Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and due from banks	1,228	1,758
Interest-bearing deposits with banks	6,884	4,524
Other short-term investments	24	19
Loans held-for-sale	2	2
Total loans, net of allowance for loan losses	50,810	50,964
Customers’ liability on acceptances outstanding	1	3
Restricted equity investments	453	223
Nonmarketable equity securities	12	12
Demand deposits (noninterest-bearing)	29,922	39,945
Interest-bearing deposits	28,824	29,566
Customer certificates of deposit	3,372	1,719
Other time deposits	5,106	124
Total deposits	67,224	71,354
Short-term borrowings	4,812	3,211
Acceptances outstanding	1	3
Medium- and long-term debt	5,781	3,071
Credit-related financial instruments	(73)	(79)
Level 1 | Estimated Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and due from banks	1,228	1,758
Interest-bearing deposits with banks	6,884	4,524
Other short-term investments	24	19
Loans held-for-sale	0	0
Total loans, net of allowance for loan losses	0	0
Customers’ liability on acceptances outstanding	1	3
Restricted equity investments	453	223
Demand deposits (noninterest-bearing)	0	0
Interest-bearing deposits	0	0
Customer certificates of deposit	0	0
Other time deposits	0	0
Total deposits	0	0
Short-term borrowings	4,812	3,211
Acceptances outstanding	1	3
Medium- and long-term debt	0	0
Credit-related financial instruments	0	0
Level 2 | Estimated Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and due from banks	0	0
Interest-bearing deposits with banks	0	0
Other short-term investments	0	0
Loans held-for-sale	2	2
Total loans, net of allowance for loan losses	0	0
Customers’ liability on acceptances outstanding	0	0
Restricted equity investments	0	0
Demand deposits (noninterest-bearing)	29,922	39,945
Interest-bearing deposits	28,824	29,566
Customer certificates of deposit	3,372	1,719
Other time deposits	5,106	124
Total deposits	67,224	71,354
Short-term borrowings	0	0
Acceptances outstanding	0	0
Medium- and long-term debt	5,781	3,071
Credit-related financial instruments	0	0
Level 3 | Estimated Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and due from banks	0	0
Interest-bearing deposits with banks	0	0
Other short-term investments	0	0
Loans held-for-sale	0	0
Total loans, net of allowance for loan losses	50,810	50,964
Customers’ liability on acceptances outstanding	0	0
Restricted equity investments	0	0
Demand deposits (noninterest-bearing)	0	0
Interest-bearing deposits	0	0
Customer certificates of deposit	0	0
Other time deposits	0	0
Total deposits	0	0
Short-term borrowings	0	0
Acceptances outstanding	0	0
Medium- and long-term debt	0	0
Credit-related financial instruments	(73)	(79)
Nonrecurring
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans recorded at fair value	34	66
Nonrecurring | Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans held-for-sale	236
Total loans, net of allowance for loan losses	$ 34	$ 66

Investment Securities (Summary

Investment Securities (Summary Of Investment Securities) (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Schedule of Investments [Line Items]
Amortized Cost	$ 19,969	$ 22,045
Gross Unrealized Gains	0	0
Gross Unrealized Losses	3,646	3,033
Fair Value	16,323	19,012
U.S. Treasury securities
Schedule of Investments [Line Items]
Amortized Cost	1,788	2,810
Gross Unrealized Gains	0	0
Gross Unrealized Losses	107	146
Fair Value	1,681	2,664
Residential mortgage-backed securities
Schedule of Investments [Line Items]
Amortized Cost	12,928	13,983
Gross Unrealized Gains	0	0
Gross Unrealized Losses	2,754	2,328
Fair Value	10,174	11,655
Commercial mortgage-backed securities
Schedule of Investments [Line Items]
Amortized Cost	5,253	5,252
Gross Unrealized Gains	0	0
Gross Unrealized Losses	785	559
Fair Value	$ 4,468	$ 4,693

Investment Securities (Summar_2

Investment Securities (Summary Of Investment Securities In Unrealized Loss Positions) (Details) $ in Millions	Sep. 30, 2023 USD ($) security	Dec. 31, 2022 USD ($) security
Schedule of Investments [Line Items]
Less than 12 months, Fair Value	$ 15	$ 8,504
Less than 12 Months, Unrealized Losses	0	771
12 months or more, Fair Value	16,308	10,506
12 Months or more, Unrealized Losses	3,646	2,262
Total, Fair Value	16,323	19,010
Total, Unrealized Losses	$ 3,646	$ 3,033
Debt Securities Count | security	1,267	1,289
U.S. Treasury securities
Schedule of Investments [Line Items]
Less than 12 months, Fair Value	$ 0	$ 996
Less than 12 Months, Unrealized Losses	0	5
12 months or more, Fair Value	1,681	1,668
12 Months or more, Unrealized Losses	107	141
Total, Fair Value	1,681	2,664
Total, Unrealized Losses	$ 107	$ 146
Debt Securities Count | security	20	27
Residential mortgage-backed securities
Schedule of Investments [Line Items]
Less than 12 months, Fair Value	$ 15	$ 3,500
Less than 12 Months, Unrealized Losses	0	361
12 months or more, Fair Value	10,159	8,153
12 Months or more, Unrealized Losses	2,754	1,967
Total, Fair Value	10,174	11,653
Total, Unrealized Losses	$ 2,754	$ 2,328
Debt Securities Count | security	994	1,008
Commercial mortgage-backed securities
Schedule of Investments [Line Items]
Less than 12 months, Fair Value	$ 0	$ 4,008
Less than 12 Months, Unrealized Losses	0	405
12 months or more, Fair Value	4,468	685
12 Months or more, Unrealized Losses	785	154
Total, Fair Value	4,468	4,693
Total, Unrealized Losses	$ 785	$ 559
Debt Securities Count | security	253	254

Investment Securities (Narrativ

Investment Securities (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Schedule of Investments [Line Items]
Loan interest receivable	$ 41		$ 41		$ 49
Securities gains and losses	0	$ 0	0	$ 0
Carrying value of securities pledged	15,800		15,800
Federal reserve bank pledges	7,500		7,500
Pledged to the FHLB as collateral for potential future borrowings	6,400		6,400
Collateral for potential future borrowings	1,900		1,900
Liabilities secured by pledged collateral	$ 536		$ 536

Investment Securities (Contract

Investment Securities (Contractual Maturity Distribution Of Debt Securities) (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Schedule of Investments [Line Items]
Amortized Cost	$ 19,969	$ 22,045
Fair Value	16,323	$ 19,012
Debt securities
Schedule of Investments [Line Items]
Available-for-sale, Within one year, Amortized Cost	662
Available-for-sale, After one year through five years, Amortized Cost	1,380
Available-for-sale, After five years through ten years, Amortized Cost	5,366
Available-for-sale, After ten years, Amortized Cost	12,561
Amortized Cost	19,969
Available-for-sale, Within one year, Fair Value	641
Available-for-sale, After one year through five years, Fair Value	1,278
Available-for-sale, After five years through ten years, Fair Value	4,580
Available-for-sale, After ten years, Fair Value	9,824
Fair Value	$ 16,323

Credit Quality And Allowance _3

Credit Quality And Allowance For Credit Losses (Aging Analysis Of Loans) (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Financing Receivable, Past Due [Line Items]
Loans Past Due and Still Accruing	$ 271	$ 401
Nonaccrual Loans	154	240
Current Loans	52,973	52,761
Total loans	53,398	53,402
30-59 Days
Financing Receivable, Past Due [Line Items]
Loans Past Due and Still Accruing	184	341
60-89  Days
Financing Receivable, Past Due [Line Items]
Loans Past Due and Still Accruing	42	37
90 Days or More
Financing Receivable, Past Due [Line Items]
Loans Past Due and Still Accruing	45	23
Business loans: | Commercial borrower
Financing Receivable, Past Due [Line Items]
Loans Past Due and Still Accruing	245	366
Nonaccrual Loans	118	171
Current Loans	48,894	48,740
Total loans	49,257	49,277
Business loans: | Commercial borrower | 30-59 Days
Financing Receivable, Past Due [Line Items]
Loans Past Due and Still Accruing	162	310
Business loans: | Commercial borrower | 60-89  Days
Financing Receivable, Past Due [Line Items]
Loans Past Due and Still Accruing	38	33
Business loans: | Commercial borrower | 90 Days or More
Financing Receivable, Past Due [Line Items]
Loans Past Due and Still Accruing	45	23
Business loans: | Commercial borrower | Domestic
Financing Receivable, Past Due [Line Items]
Loans Past Due and Still Accruing	95	271
Nonaccrual Loans	83	142
Current Loans	28,829	30,496
Total loans	29,007	30,909
Business loans: | Commercial borrower | Domestic | 30-59 Days
Financing Receivable, Past Due [Line Items]
Loans Past Due and Still Accruing	51	238
Business loans: | Commercial borrower | Domestic | 60-89  Days
Financing Receivable, Past Due [Line Items]
Loans Past Due and Still Accruing	18	13
Business loans: | Commercial borrower | Domestic | 90 Days or More
Financing Receivable, Past Due [Line Items]
Loans Past Due and Still Accruing	26	20
Business loans: | Commercial borrower | International
Financing Receivable, Past Due [Line Items]
Loans Past Due and Still Accruing	3	9
Nonaccrual Loans	3	3
Current Loans	1,188	1,185
Total loans	1,194	1,197
Business loans: | Commercial borrower | International | 30-59 Days
Financing Receivable, Past Due [Line Items]
Loans Past Due and Still Accruing	3	0
Business loans: | Commercial borrower | International | 60-89  Days
Financing Receivable, Past Due [Line Items]
Loans Past Due and Still Accruing	0	9
Business loans: | Commercial borrower | International | 90 Days or More
Financing Receivable, Past Due [Line Items]
Loans Past Due and Still Accruing	0	0
Business loans: | Commercial borrower | Real estate construction: | Domestic
Financing Receivable, Past Due [Line Items]
Loans Past Due and Still Accruing	58	2
Nonaccrual Loans	2	3
Current Loans	4,485	3,100
Total loans	4,545	3,105
Business loans: | Commercial borrower | Real estate construction: | Domestic | 30-59 Days
Financing Receivable, Past Due [Line Items]
Loans Past Due and Still Accruing	58	2
Business loans: | Commercial borrower | Real estate construction: | Domestic | 60-89  Days
Financing Receivable, Past Due [Line Items]
Loans Past Due and Still Accruing	0	0
Business loans: | Commercial borrower | Real estate construction: | Domestic | 90 Days or More
Financing Receivable, Past Due [Line Items]
Loans Past Due and Still Accruing	0	0
Business loans: | Commercial borrower | Real estate construction: | Domestic | Commercial
Financing Receivable, Past Due [Line Items]
Loans Past Due and Still Accruing	32	0
Nonaccrual Loans	0	0
Current Loans	3,983	2,505
Total loans	4,015	2,505
Business loans: | Commercial borrower | Real estate construction: | Domestic | Commercial | 30-59 Days
Financing Receivable, Past Due [Line Items]
Loans Past Due and Still Accruing	32	0
Business loans: | Commercial borrower | Real estate construction: | Domestic | Commercial | 60-89  Days
Financing Receivable, Past Due [Line Items]
Loans Past Due and Still Accruing	0	0
Business loans: | Commercial borrower | Real estate construction: | Domestic | Commercial | 90 Days or More
Financing Receivable, Past Due [Line Items]
Loans Past Due and Still Accruing	0	0
Business loans: | Commercial borrower | Real estate construction: | Domestic | Other business lines
Financing Receivable, Past Due [Line Items]
Loans Past Due and Still Accruing	26	2
Nonaccrual Loans	2	3
Current Loans	502	595
Total loans	530	600
Business loans: | Commercial borrower | Real estate construction: | Domestic | Other business lines | 30-59 Days
Financing Receivable, Past Due [Line Items]
Loans Past Due and Still Accruing	26	2
Business loans: | Commercial borrower | Real estate construction: | Domestic | Other business lines | 60-89  Days
Financing Receivable, Past Due [Line Items]
Loans Past Due and Still Accruing	0	0
Business loans: | Commercial borrower | Real estate construction: | Domestic | Other business lines | 90 Days or More
Financing Receivable, Past Due [Line Items]
Loans Past Due and Still Accruing	0	0
Business loans: | Commercial borrower | Commercial mortgage: | Domestic
Financing Receivable, Past Due [Line Items]
Loans Past Due and Still Accruing	81	78
Nonaccrual Loans	30	23
Current Loans	13,610	13,205
Total loans	13,721	13,306
Business loans: | Commercial borrower | Commercial mortgage: | Domestic | 30-59 Days
Financing Receivable, Past Due [Line Items]
Loans Past Due and Still Accruing	43	64
Business loans: | Commercial borrower | Commercial mortgage: | Domestic | 60-89  Days
Financing Receivable, Past Due [Line Items]
Loans Past Due and Still Accruing	20	11
Business loans: | Commercial borrower | Commercial mortgage: | Domestic | 90 Days or More
Financing Receivable, Past Due [Line Items]
Loans Past Due and Still Accruing	18	3
Business loans: | Commercial borrower | Commercial mortgage: | Domestic | Commercial
Financing Receivable, Past Due [Line Items]
Loans Past Due and Still Accruing	0	6
Nonaccrual Loans	0	1
Current Loans	4,832	4,674
Total loans	4,832	4,681
Business loans: | Commercial borrower | Commercial mortgage: | Domestic | Commercial | 30-59 Days
Financing Receivable, Past Due [Line Items]
Loans Past Due and Still Accruing	0	0
Business loans: | Commercial borrower | Commercial mortgage: | Domestic | Commercial | 60-89  Days
Financing Receivable, Past Due [Line Items]
Loans Past Due and Still Accruing	0	6
Business loans: | Commercial borrower | Commercial mortgage: | Domestic | Commercial | 90 Days or More
Financing Receivable, Past Due [Line Items]
Loans Past Due and Still Accruing	0	0
Business loans: | Commercial borrower | Commercial mortgage: | Domestic | Other business lines
Financing Receivable, Past Due [Line Items]
Loans Past Due and Still Accruing	81	72
Nonaccrual Loans	30	22
Current Loans	8,778	8,531
Total loans	8,889	8,625
Business loans: | Commercial borrower | Commercial mortgage: | Domestic | Other business lines | 30-59 Days
Financing Receivable, Past Due [Line Items]
Loans Past Due and Still Accruing	43	64
Business loans: | Commercial borrower | Commercial mortgage: | Domestic | Other business lines | 60-89  Days
Financing Receivable, Past Due [Line Items]
Loans Past Due and Still Accruing	20	5
Business loans: | Commercial borrower | Commercial mortgage: | Domestic | Other business lines | 90 Days or More
Financing Receivable, Past Due [Line Items]
Loans Past Due and Still Accruing	18	3
Business loans: | Commercial borrower | Lease financing | Domestic
Financing Receivable, Past Due [Line Items]
Loans Past Due and Still Accruing	8	6
Nonaccrual Loans	0	0
Current Loans	782	754
Total loans	790	760
Business loans: | Commercial borrower | Lease financing | Domestic | 30-59 Days
Financing Receivable, Past Due [Line Items]
Loans Past Due and Still Accruing	7	6
Business loans: | Commercial borrower | Lease financing | Domestic | 60-89  Days
Financing Receivable, Past Due [Line Items]
Loans Past Due and Still Accruing	0	0
Business loans: | Commercial borrower | Lease financing | Domestic | 90 Days or More
Financing Receivable, Past Due [Line Items]
Loans Past Due and Still Accruing	1	0
Retail loans:
Financing Receivable, Past Due [Line Items]
Loans Past Due and Still Accruing	26	35
Nonaccrual Loans	36	69
Current Loans	4,079	4,021
Total loans	4,141	4,125
Retail loans: | 30-59 Days
Financing Receivable, Past Due [Line Items]
Loans Past Due and Still Accruing	22	31
Retail loans: | 60-89  Days
Financing Receivable, Past Due [Line Items]
Loans Past Due and Still Accruing	4	4
Retail loans: | 90 Days or More
Financing Receivable, Past Due [Line Items]
Loans Past Due and Still Accruing	0	0
Retail loans: | Residential mortgage
Financing Receivable, Past Due [Line Items]
Loans Past Due and Still Accruing	9	22
Nonaccrual Loans	19	53
Current Loans	1,877	1,739
Total loans	1,905	1,814
Retail loans: | Residential mortgage | 30-59 Days
Financing Receivable, Past Due [Line Items]
Loans Past Due and Still Accruing	7	22
Retail loans: | Residential mortgage | 60-89  Days
Financing Receivable, Past Due [Line Items]
Loans Past Due and Still Accruing	2	0
Retail loans: | Residential mortgage | 90 Days or More
Financing Receivable, Past Due [Line Items]
Loans Past Due and Still Accruing	0	0
Retail loans: | Consumer
Financing Receivable, Past Due [Line Items]
Loans Past Due and Still Accruing	17	13
Nonaccrual Loans	17	16
Current Loans	2,202	2,282
Total loans	2,236	2,311
Retail loans: | Consumer | 30-59 Days
Financing Receivable, Past Due [Line Items]
Loans Past Due and Still Accruing	15	9
Retail loans: | Consumer | 60-89  Days
Financing Receivable, Past Due [Line Items]
Loans Past Due and Still Accruing	2	4
Retail loans: | Consumer | 90 Days or More
Financing Receivable, Past Due [Line Items]
Loans Past Due and Still Accruing	0	0
Retail loans: | Consumer | Home equity
Financing Receivable, Past Due [Line Items]
Loans Past Due and Still Accruing	15	7
Nonaccrual Loans	17	15
Current Loans	1,732	1,754
Total loans	1,764	1,776
Retail loans: | Consumer | Home equity | 30-59 Days
Financing Receivable, Past Due [Line Items]
Loans Past Due and Still Accruing	13	4
Retail loans: | Consumer | Home equity | 60-89  Days
Financing Receivable, Past Due [Line Items]
Loans Past Due and Still Accruing	2	3
Retail loans: | Consumer | Home equity | 90 Days or More
Financing Receivable, Past Due [Line Items]
Loans Past Due and Still Accruing	0	0
Retail loans: | Consumer | Other consumer
Financing Receivable, Past Due [Line Items]
Loans Past Due and Still Accruing	2	6
Nonaccrual Loans	0	1
Current Loans	470	528
Total loans	472	535
Retail loans: | Consumer | Other consumer | 30-59 Days
Financing Receivable, Past Due [Line Items]
Loans Past Due and Still Accruing	2	5
Retail loans: | Consumer | Other consumer | 60-89  Days
Financing Receivable, Past Due [Line Items]
Loans Past Due and Still Accruing	0	1
Retail loans: | Consumer | Other consumer | 90 Days or More
Financing Receivable, Past Due [Line Items]
Loans Past Due and Still Accruing	$ 0	$ 0

Credit Quality And Allowance _4

Credit Quality And Allowance For Credit Losses (Loans By Credit Quality Indicator and Vintage Year) (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2023	Dec. 31, 2022
Loans by Credit Quality Indicator and Vintage Year
Financing receivable, year one, originated, current fiscal year	$ 5,026	$ 9,268
Financing receivable, year two originated, fiscal year before current fiscal year	9,434	8,160
Financing receivable, year three, originated, two years before current fiscal year	7,399	4,120
Financing receivable, year four, originated, three years before current fiscal year	3,437	2,992
Financing receivable, year five, originated, four years before current fiscal year	2,423	1,960
Prior	4,500	3,961
Revolvers	21,111	22,889
Revolvers Converted to Term	68	52
Total loans	53,398	53,402
Business loans: | Commercial
Loans by Credit Quality Indicator and Vintage Year
Financing receivable, year one, originated, current fiscal year	4,757	8,868
Financing receivable, year two originated, fiscal year before current fiscal year	9,093	7,724
Financing receivable, year three, originated, two years before current fiscal year	6,997	3,590
Financing receivable, year four, originated, three years before current fiscal year	2,973	2,841
Financing receivable, year five, originated, four years before current fiscal year	2,283	1,890
Prior	4,088	3,548
Revolvers	19,053	20,806
Revolvers Converted to Term	13	10
Total loans	49,257	49,277
Business loans: | Commercial | Domestic
Loans by Credit Quality Indicator and Vintage Year
Financing receivable, year one, originated, current fiscal year	2,559	4,021
Financing receivable, year two originated, fiscal year before current fiscal year	3,383	3,783
Financing receivable, year three, originated, two years before current fiscal year	2,875	998
Financing receivable, year four, originated, three years before current fiscal year	683	1,110
Financing receivable, year five, originated, four years before current fiscal year	808	643
Prior	1,207	1,108
Revolvers	17,479	19,236
Revolvers Converted to Term	13	10
Total loans	29,007	30,909
Total gross charge-offs
Financing receivable, year one originated, gross charge-offs	1
Financing receivable, year two originated, gross charge-offs	3
Financing receivable, year three originated, gross charge-offs	2
Financing receivable, year four originated, gross charge-offs	1
Financing receivable, year five originated, gross charge-offs	8
Prior	11
Revolvers	3
Revolvers Converted to Term	0
Total	29
Business loans: | Commercial | Domestic | Pass
Loans by Credit Quality Indicator and Vintage Year
Financing receivable, year one, originated, current fiscal year	2,538	3,946
Financing receivable, year two originated, fiscal year before current fiscal year	3,241	3,509
Financing receivable, year three, originated, two years before current fiscal year	2,584	917
Financing receivable, year four, originated, three years before current fiscal year	630	1,041
Financing receivable, year five, originated, four years before current fiscal year	715	598
Prior	1,130	1,030
Revolvers	16,668	18,604
Revolvers Converted to Term	12	9
Total loans	27,518	29,654
Business loans: | Commercial | Domestic | Criticized
Loans by Credit Quality Indicator and Vintage Year
Financing receivable, year one, originated, current fiscal year	21	75
Financing receivable, year two originated, fiscal year before current fiscal year	142	274
Financing receivable, year three, originated, two years before current fiscal year	291	81
Financing receivable, year four, originated, three years before current fiscal year	53	69
Financing receivable, year five, originated, four years before current fiscal year	93	45
Prior	77	78
Revolvers	811	632
Revolvers Converted to Term	1	1
Total loans	1,489	1,255
Business loans: | Commercial | International
Loans by Credit Quality Indicator and Vintage Year
Financing receivable, year one, originated, current fiscal year	287	329
Financing receivable, year two originated, fiscal year before current fiscal year	170	161
Financing receivable, year three, originated, two years before current fiscal year	101	58
Financing receivable, year four, originated, three years before current fiscal year	40	88
Financing receivable, year five, originated, four years before current fiscal year	80	22
Prior	16	24
Revolvers	500	515
Revolvers Converted to Term	0	0
Total loans	1,194	1,197
Total gross charge-offs
Financing receivable, year one originated, gross charge-offs	2
Financing receivable, year two originated, gross charge-offs	0
Financing receivable, year three originated, gross charge-offs	0
Financing receivable, year four originated, gross charge-offs	0
Financing receivable, year five originated, gross charge-offs	0
Prior	0
Revolvers	0
Revolvers Converted to Term	0
Total	2
Business loans: | Commercial | International | Pass
Loans by Credit Quality Indicator and Vintage Year
Financing receivable, year one, originated, current fiscal year	280	317
Financing receivable, year two originated, fiscal year before current fiscal year	168	161
Financing receivable, year three, originated, two years before current fiscal year	101	55
Financing receivable, year four, originated, three years before current fiscal year	39	88
Financing receivable, year five, originated, four years before current fiscal year	80	19
Prior	5	14
Revolvers	491	498
Revolvers Converted to Term	0	0
Total loans	1,164	1,152
Business loans: | Commercial | International | Criticized
Loans by Credit Quality Indicator and Vintage Year
Financing receivable, year one, originated, current fiscal year	7	12
Financing receivable, year two originated, fiscal year before current fiscal year	2	0
Financing receivable, year three, originated, two years before current fiscal year	0	3
Financing receivable, year four, originated, three years before current fiscal year	1	0
Financing receivable, year five, originated, four years before current fiscal year	0	3
Prior	11	10
Revolvers	9	17
Revolvers Converted to Term	0	0
Total loans	30	45
Business loans: | Commercial | Real estate construction: | Domestic
Loans by Credit Quality Indicator and Vintage Year
Financing receivable, year one, originated, current fiscal year	360	836
Financing receivable, year two originated, fiscal year before current fiscal year	1,888	1,134
Financing receivable, year three, originated, two years before current fiscal year	1,547	636
Financing receivable, year four, originated, three years before current fiscal year	375	162
Financing receivable, year five, originated, four years before current fiscal year	71	102
Prior	49	28
Revolvers	255	207
Revolvers Converted to Term	0	0
Total loans	4,545	3,105
Total gross charge-offs
Financing receivable, year one originated, gross charge-offs	0
Financing receivable, year two originated, gross charge-offs	0
Financing receivable, year three originated, gross charge-offs	0
Financing receivable, year four originated, gross charge-offs	0
Financing receivable, year five originated, gross charge-offs	0
Prior	0
Revolvers	0
Revolvers Converted to Term	0
Total	0
Business loans: | Commercial | Real estate construction: | Domestic | Pass
Loans by Credit Quality Indicator and Vintage Year
Financing receivable, year one, originated, current fiscal year	360	836
Financing receivable, year two originated, fiscal year before current fiscal year	1,859	1,134
Financing receivable, year three, originated, two years before current fiscal year	1,513	633
Financing receivable, year four, originated, three years before current fiscal year	373	162
Financing receivable, year five, originated, four years before current fiscal year	65	102
Prior	49	28
Revolvers	254	207
Revolvers Converted to Term	0	0
Total loans	4,473	3,102
Business loans: | Commercial | Real estate construction: | Domestic | Criticized
Loans by Credit Quality Indicator and Vintage Year
Financing receivable, year one, originated, current fiscal year	0	0
Financing receivable, year two originated, fiscal year before current fiscal year	29	0
Financing receivable, year three, originated, two years before current fiscal year	34	3
Financing receivable, year four, originated, three years before current fiscal year	2	0
Financing receivable, year five, originated, four years before current fiscal year	6	0
Prior	0	0
Revolvers	1	0
Revolvers Converted to Term	0	0
Total loans	72	3
Business loans: | Commercial | Commercial mortgage: | Domestic
Loans by Credit Quality Indicator and Vintage Year
Financing receivable, year one, originated, current fiscal year	1,404	3,356
Financing receivable, year two originated, fiscal year before current fiscal year	3,343	2,506
Financing receivable, year three, originated, two years before current fiscal year	2,355	1,832
Financing receivable, year four, originated, three years before current fiscal year	1,821	1,426
Financing receivable, year five, originated, four years before current fiscal year	1,279	1,081
Prior	2,700	2,257
Revolvers	819	848
Revolvers Converted to Term	0	0
Total loans	13,721	13,306
Total gross charge-offs
Financing receivable, year one originated, gross charge-offs	0
Financing receivable, year two originated, gross charge-offs	0
Financing receivable, year three originated, gross charge-offs	0
Financing receivable, year four originated, gross charge-offs	0
Financing receivable, year five originated, gross charge-offs	3
Prior	0
Revolvers	0
Revolvers Converted to Term	0
Total	3
Business loans: | Commercial | Commercial mortgage: | Domestic | Pass
Loans by Credit Quality Indicator and Vintage Year
Financing receivable, year one, originated, current fiscal year	1,403	3,349
Financing receivable, year two originated, fiscal year before current fiscal year	3,251	2,501
Financing receivable, year three, originated, two years before current fiscal year	2,287	1,825
Financing receivable, year four, originated, three years before current fiscal year	1,810	1,394
Financing receivable, year five, originated, four years before current fiscal year	1,014	1,050
Prior	2,518	2,182
Revolvers	819	838
Revolvers Converted to Term	0	0
Total loans	13,102	13,139
Business loans: | Commercial | Commercial mortgage: | Domestic | Criticized
Loans by Credit Quality Indicator and Vintage Year
Financing receivable, year one, originated, current fiscal year	1	7
Financing receivable, year two originated, fiscal year before current fiscal year	92	5
Financing receivable, year three, originated, two years before current fiscal year	68	7
Financing receivable, year four, originated, three years before current fiscal year	11	32
Financing receivable, year five, originated, four years before current fiscal year	265	31
Prior	182	75
Revolvers	0	10
Revolvers Converted to Term	0	0
Total loans	619	167
Business loans: | Commercial | Lease financing | Domestic
Loans by Credit Quality Indicator and Vintage Year
Financing receivable, year one, originated, current fiscal year	147	326
Financing receivable, year two originated, fiscal year before current fiscal year	309	140
Financing receivable, year three, originated, two years before current fiscal year	119	66
Financing receivable, year four, originated, three years before current fiscal year	54	55
Financing receivable, year five, originated, four years before current fiscal year	45	42
Prior	116	131
Revolvers	0	0
Revolvers Converted to Term	0	0
Total loans	790	760
Total gross charge-offs
Financing receivable, year one originated, gross charge-offs	0
Financing receivable, year two originated, gross charge-offs	0
Financing receivable, year three originated, gross charge-offs	0
Financing receivable, year four originated, gross charge-offs	0
Financing receivable, year five originated, gross charge-offs	0
Prior	0
Revolvers	0
Revolvers Converted to Term	0
Total	0
Business loans: | Commercial | Lease financing | Domestic | Pass
Loans by Credit Quality Indicator and Vintage Year
Financing receivable, year one, originated, current fiscal year	142	316
Financing receivable, year two originated, fiscal year before current fiscal year	301	140
Financing receivable, year three, originated, two years before current fiscal year	116	64
Financing receivable, year four, originated, three years before current fiscal year	52	47
Financing receivable, year five, originated, four years before current fiscal year	38	37
Prior	111	130
Revolvers	0	0
Revolvers Converted to Term	0	0
Total loans	760	734
Business loans: | Commercial | Lease financing | Domestic | Criticized
Loans by Credit Quality Indicator and Vintage Year
Financing receivable, year one, originated, current fiscal year	5	10
Financing receivable, year two originated, fiscal year before current fiscal year	8	0
Financing receivable, year three, originated, two years before current fiscal year	3	2
Financing receivable, year four, originated, three years before current fiscal year	2	8
Financing receivable, year five, originated, four years before current fiscal year	7	5
Prior	5	1
Revolvers	0	0
Revolvers Converted to Term	0	0
Total loans	30	26
Retail loans:
Loans by Credit Quality Indicator and Vintage Year
Financing receivable, year one, originated, current fiscal year	269	400
Financing receivable, year two originated, fiscal year before current fiscal year	341	436
Financing receivable, year three, originated, two years before current fiscal year	402	530
Financing receivable, year four, originated, three years before current fiscal year	464	151
Financing receivable, year five, originated, four years before current fiscal year	140	70
Prior	412	413
Revolvers	2,058	2,083
Revolvers Converted to Term	55	42
Total loans	4,141	4,125
Retail loans: | Residential mortgage
Loans by Credit Quality Indicator and Vintage Year
Financing receivable, year one, originated, current fiscal year	247	331
Financing receivable, year two originated, fiscal year before current fiscal year	299	398
Financing receivable, year three, originated, two years before current fiscal year	376	480
Financing receivable, year four, originated, three years before current fiscal year	455	142
Financing receivable, year five, originated, four years before current fiscal year	134	69
Prior	394	394
Revolvers	0	0
Revolvers Converted to Term	0	0
Total loans	1,905	1,814
Total gross charge-offs
Financing receivable, year one originated, gross charge-offs	0
Financing receivable, year two originated, gross charge-offs	0
Financing receivable, year three originated, gross charge-offs	0
Financing receivable, year four originated, gross charge-offs	0
Financing receivable, year five originated, gross charge-offs	0
Prior	0
Revolvers	0
Revolvers Converted to Term	0
Total	0
Retail loans: | Residential mortgage | Pass
Loans by Credit Quality Indicator and Vintage Year
Financing receivable, year one, originated, current fiscal year	245	327
Financing receivable, year two originated, fiscal year before current fiscal year	299	398
Financing receivable, year three, originated, two years before current fiscal year	375	480
Financing receivable, year four, originated, three years before current fiscal year	455	133
Financing receivable, year five, originated, four years before current fiscal year	134	68
Prior	376	355
Revolvers	0	0
Revolvers Converted to Term	0	0
Total loans	1,884	1,761
Retail loans: | Residential mortgage | Criticized
Loans by Credit Quality Indicator and Vintage Year
Financing receivable, year one, originated, current fiscal year	2	4
Financing receivable, year two originated, fiscal year before current fiscal year	0	0
Financing receivable, year three, originated, two years before current fiscal year	1	0
Financing receivable, year four, originated, three years before current fiscal year	0	9
Financing receivable, year five, originated, four years before current fiscal year	0	1
Prior	18	39
Revolvers	0	0
Revolvers Converted to Term	0	0
Total loans	21	53
Retail loans: | Consumer
Loans by Credit Quality Indicator and Vintage Year
Financing receivable, year one, originated, current fiscal year	22	69
Financing receivable, year two originated, fiscal year before current fiscal year	42	38
Financing receivable, year three, originated, two years before current fiscal year	26	50
Financing receivable, year four, originated, three years before current fiscal year	9	9
Financing receivable, year five, originated, four years before current fiscal year	6	1
Prior	18	19
Revolvers	2,058	2,083
Revolvers Converted to Term	55	42
Total loans	2,236	2,311
Retail loans: | Consumer | Home equity
Loans by Credit Quality Indicator and Vintage Year
Financing receivable, year one, originated, current fiscal year	0	0
Financing receivable, year two originated, fiscal year before current fiscal year	0	0
Financing receivable, year three, originated, two years before current fiscal year	0	0
Financing receivable, year four, originated, three years before current fiscal year	0	0
Financing receivable, year five, originated, four years before current fiscal year	0	0
Prior	8	9
Revolvers	1,701	1,725
Revolvers Converted to Term	55	42
Total loans	1,764	1,776
Total gross charge-offs
Financing receivable, year one originated, gross charge-offs	0
Financing receivable, year two originated, gross charge-offs	0
Financing receivable, year three originated, gross charge-offs	0
Financing receivable, year four originated, gross charge-offs	0
Financing receivable, year five originated, gross charge-offs	0
Prior	0
Revolvers	2
Revolvers Converted to Term	0
Total	2
Retail loans: | Consumer | Home equity | Pass
Loans by Credit Quality Indicator and Vintage Year
Financing receivable, year one, originated, current fiscal year	0	0
Financing receivable, year two originated, fiscal year before current fiscal year	0	0
Financing receivable, year three, originated, two years before current fiscal year	0	0
Financing receivable, year four, originated, three years before current fiscal year	0	0
Financing receivable, year five, originated, four years before current fiscal year	0	0
Prior	8	9
Revolvers	1,677	1,708
Revolvers Converted to Term	53	40
Total loans	1,738	1,757
Retail loans: | Consumer | Home equity | Criticized
Loans by Credit Quality Indicator and Vintage Year
Financing receivable, year one, originated, current fiscal year	0	0
Financing receivable, year two originated, fiscal year before current fiscal year	0	0
Financing receivable, year three, originated, two years before current fiscal year	0	0
Financing receivable, year four, originated, three years before current fiscal year	0	0
Financing receivable, year five, originated, four years before current fiscal year	0	0
Prior	0	0
Revolvers	24	17
Revolvers Converted to Term	2	2
Total loans	26	19
Retail loans: | Consumer | Other consumer
Loans by Credit Quality Indicator and Vintage Year
Financing receivable, year one, originated, current fiscal year	22	69
Financing receivable, year two originated, fiscal year before current fiscal year	42	38
Financing receivable, year three, originated, two years before current fiscal year	26	50
Financing receivable, year four, originated, three years before current fiscal year	9	9
Financing receivable, year five, originated, four years before current fiscal year	6	1
Prior	10	10
Revolvers	357	358
Revolvers Converted to Term	0	0
Total loans	472	535
Total gross charge-offs
Financing receivable, year one originated, gross charge-offs	0
Financing receivable, year two originated, gross charge-offs	0
Financing receivable, year three originated, gross charge-offs	0
Financing receivable, year four originated, gross charge-offs	0
Financing receivable, year five originated, gross charge-offs	1
Prior	0
Revolvers	0
Revolvers Converted to Term	0
Total	1
Retail loans: | Consumer | Other consumer | Pass
Loans by Credit Quality Indicator and Vintage Year
Financing receivable, year one, originated, current fiscal year	22	69
Financing receivable, year two originated, fiscal year before current fiscal year	42	38
Financing receivable, year three, originated, two years before current fiscal year	26	50
Financing receivable, year four, originated, three years before current fiscal year	9	8
Financing receivable, year five, originated, four years before current fiscal year	6	1
Prior	7	10
Revolvers	357	355
Revolvers Converted to Term	0	0
Total loans	469	531
Retail loans: | Consumer | Other consumer | Criticized
Loans by Credit Quality Indicator and Vintage Year
Financing receivable, year one, originated, current fiscal year	0	0
Financing receivable, year two originated, fiscal year before current fiscal year	0	0
Financing receivable, year three, originated, two years before current fiscal year	0	0
Financing receivable, year four, originated, three years before current fiscal year	0	1
Financing receivable, year five, originated, four years before current fiscal year	0	0
Prior	3	0
Revolvers	0	3
Revolvers Converted to Term	0	0
Total loans	$ 3	$ 4

Credit Quality And Allowance _5

Credit Quality And Allowance For Credit Losses (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loan interest receivable	$ 317		$ 317		$ 261
Commitments to lend additional funds to TDR borrowers	$ 0	$ 1	$ 0	$ 1
Weighted-Average Term Extension (in months)	9 years 2 months 12 days		11 years
Domestic
Financing Receivable, Troubled Debt Restructuring [Line Items]
Restructuring, other-than-insignificant payment delays			$ 5
Business loans:
Financing Receivable, Troubled Debt Restructuring [Line Items]
Weighted-Average Term Extension (in months)	7 years 4 months 24 days		9 years 8 months 12 days
Commercial | Business loans:
Financing Receivable, Troubled Debt Restructuring [Line Items]
Weighted-Average Term Extension (in months)	7 years 4 months 24 days		8 years
Commercial | Business loans: | Commercial mortgage:
Financing Receivable, Troubled Debt Restructuring [Line Items]
Weighted-Average Term Extension (in months)	8 years 8 months 12 days		22 years
Commercial | Business loans: | Real estate construction:
Financing Receivable, Troubled Debt Restructuring [Line Items]
Weighted-Average Term Extension (in months)	6 years		6 years
Commercial | Business loans: | Other business lines | Commercial mortgage:
Financing Receivable, Troubled Debt Restructuring [Line Items]
Weighted-Average Term Extension (in months)	8 years 8 months 12 days		22 years
Commercial | Business loans: | Other business lines | Real estate construction:
Financing Receivable, Troubled Debt Restructuring [Line Items]
Weighted-Average Term Extension (in months)	6 years		6 years
Consumer | Retail loans:
Financing Receivable, Troubled Debt Restructuring [Line Items]
Weighted-Average Term Extension (in months)	131 years 1 month 6 days		129 years
Consumer | Retail loans: | Home equity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Weighted-Average Term Extension (in months)	131 years 1 month 6 days		129 years
Consumer | Retail loans: | Consumer:
Financing Receivable, Troubled Debt Restructuring [Line Items]
Weighted-Average Term Extension (in months)	131 years 1 month 6 days		129 years
Payment Delay
Financing Receivable, Troubled Debt Restructuring [Line Items]
Minimum period loan terms were extended	90 days	90 days	90 days	90 days
Subsequent default during period	$ 0		$ 0	$ 6
Interest Rate Reduction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Minimum period loan terms were extended	90 days	90 days	90 days	90 days
Subsequent default during period	$ 0	$ 0	$ 0

Credit Quality And Allowance _6

Credit Quality And Allowance For Credit Losses (Changes In The Allowance For Loan Losses And Related Loan Amounts) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	$ 728	$ 609	$ 661	$ 618
Provision for credit losses	14	28	77	27
Balance at end of period	$ 736	$ 624	$ 736	$ 624
As a percentage of total loans	1.38%	1.21%	1.38%	1.21%
Financing Receivable
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	$ 684	$ 563	$ 610	$ 588
Loan charge-offs	(14)	(26)	(37)	(57)
Recoveries on loans previously charged-off	8	13	35	36
Net loan (charge-offs) recoveries	(6)	(13)	(2)	(21)
Provision for credit losses	16	26	86	9
Balance at end of period	$ 694	$ 576	$ 694	$ 576
As a percentage of total loans	1.30%	1.11%	1.30%	1.11%
Unused Commitments to Extend Credit
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	$ 44	$ 46	$ 51	$ 30
Provision for credit losses	(2)	2	(9)	18
Balance at end of period	42	48	42	48
Business loans:
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	648	536	581	555
Provision for credit losses	17	26	79	16
Balance at end of period	$ 659	$ 549	$ 659	$ 549
As a percentage of total loans	1.34%	1.15%	1.34%	1.15%
Business loans: | Financing Receivable
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	$ 614	$ 502	$ 541	$ 531
Loan charge-offs	(13)	(25)	(34)	(55)
Recoveries on loans previously charged-off	7	12	33	33
Net loan (charge-offs) recoveries	(6)	(13)	(1)	(22)
Provision for credit losses	18	24	86	4
Balance at end of period	$ 626	$ 513	$ 626	$ 513
As a percentage of total loans	1.27%	1.07%	1.27%	1.07%
Business loans: | Unused Commitments to Extend Credit
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	$ 34	$ 34	$ 40	$ 24
Provision for credit losses	(1)	2	(7)	12
Balance at end of period	33	36	33	36
Retail loans:
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	80	73	80	63
Provision for credit losses	(3)	2	(2)	11
Balance at end of period	$ 77	$ 75	$ 77	$ 75
As a percentage of total loans	1.84%	1.88%	1.84%	1.88%
Retail loans: | Financing Receivable
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	$ 70	$ 61	$ 69	$ 57
Loan charge-offs	(1)	(1)	(3)	(2)
Recoveries on loans previously charged-off	1	1	2	3
Net loan (charge-offs) recoveries	0	0	(1)	1
Provision for credit losses	(2)	2	0	5
Balance at end of period	$ 68	$ 63	$ 68	$ 63
As a percentage of total loans	1.62%	1.58%	1.62%	1.58%
Retail loans: | Unused Commitments to Extend Credit
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	$ 10	$ 12	$ 11	$ 6
Provision for credit losses	(1)	0	(2)	6
Balance at end of period	$ 9	$ 12	$ 9	$ 12

Credit Quality And Allowance _7

Credit Quality And Allowance For Credit Losses (Nonaccrual Loans) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Loans with No Related Allowance	$ 92		$ 92		$ 140
Nonaccrual Loans with Related Allowance	62		62		100
Total Nonaccrual Loans	154		154		240
Interest income	2	$ 3	8	$ 7
Business loans: | Commercial
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Loans with No Related Allowance	56		56		71
Nonaccrual Loans with Related Allowance	62		62		100
Total Nonaccrual Loans	118		118		171
Business loans: | Commercial | Domestic
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Loans with No Related Allowance	38		38		64
Nonaccrual Loans with Related Allowance	45		45		78
Total Nonaccrual Loans	83		83		142
Business loans: | Commercial | International
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Loans with No Related Allowance	0		0		3
Nonaccrual Loans with Related Allowance	3		3		0
Total Nonaccrual Loans	3		3		3
Retail loans:
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Loans with No Related Allowance	36		36		69
Nonaccrual Loans with Related Allowance	0		0		0
Total Nonaccrual Loans	36		36		69
Retail loans: | Consumer
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Loans with No Related Allowance					16
Nonaccrual Loans with Related Allowance					0
Total Nonaccrual Loans	17		17		16
Real estate construction: | Business loans: | Commercial | Domestic
Financing Receivable, Nonaccrual [Line Items]
Total Nonaccrual Loans	2		2		3
Real estate construction: | Commercial | Business loans: | Commercial | Domestic
Financing Receivable, Nonaccrual [Line Items]
Total Nonaccrual Loans	0		0		0
Real estate construction: | Other business lines | Business loans: | Commercial | Domestic
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Loans with No Related Allowance	0		0		0
Nonaccrual Loans with Related Allowance	2		2		3
Total Nonaccrual Loans	2		2		3
Commercial mortgage: | Business loans: | Commercial | Domestic
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Loans with No Related Allowance	18		18		4
Nonaccrual Loans with Related Allowance	12		12		19
Total Nonaccrual Loans	30		30		23
Commercial mortgage: | Commercial | Business loans: | Commercial | Domestic
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Loans with No Related Allowance					0
Nonaccrual Loans with Related Allowance					1
Total Nonaccrual Loans	0		0		1
Commercial mortgage: | Other business lines | Business loans: | Commercial | Domestic
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Loans with No Related Allowance	18		18		4
Nonaccrual Loans with Related Allowance	12		12		18
Total Nonaccrual Loans	30		30		22
Residential mortgage | Retail loans:
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Loans with No Related Allowance	19		19		53
Nonaccrual Loans with Related Allowance	0		0		0
Total Nonaccrual Loans	19		19		53
Home equity | Retail loans: | Consumer
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Loans with No Related Allowance	17		17		15
Nonaccrual Loans with Related Allowance	0		0		0
Total Nonaccrual Loans	17		17		15
Other consumer | Retail loans: | Consumer
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual Loans with No Related Allowance					1
Nonaccrual Loans with Related Allowance					0
Total Nonaccrual Loans	$ 0		$ 0		$ 1

Credit Quality And Allowance _8

Credit Quality And Allowance For Credit Losses (Loan Modifications Made to Borrowers Experiencing Financial Difficulty) (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2023
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	$ 75	$ 140
Percent of Total Class	0.14%	0.26%
Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	$ 63	$ 100
Payment Delay
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	0	21
Interest Rate Reduction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	5	6
Combination
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	$ 7	13
Business loans:
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total		$ 137
Percent of Total Class	0.15%	0.28%
Business loans: | Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	$ 63	$ 99
Business loans: | Payment Delay
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	0	21
Business loans: | Interest Rate Reduction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	4	5
Business loans: | Combination
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	6	12
Business loans: | Commercial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	73
Business loans: | Commercial | Domestic
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	$ 58	$ 113
Percent of Total Class	0.20%	0.39%
Business loans: | Commercial | Commercial mortgage: | Domestic
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	$ 7	$ 16
Percent of Total Class	0.05%	0.12%
Business loans: | Commercial | Commercial mortgage: | Other business lines | Domestic
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	$ 7	$ 16
Percent of Total Class	0.08%	0.18%
Business loans: | Commercial | Real estate construction: | Domestic
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	$ 8	$ 8
Percent of Total Class	0.17%	0.17%
Business loans: | Commercial | Real estate construction: | Other business lines | Domestic
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	$ 8	$ 8
Percent of Total Class	1.44%	1.44%
Business loans: | Commercial | Term Extension | Domestic
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	$ 54	$ 87
Business loans: | Commercial | Term Extension | Commercial mortgage: | Domestic
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	1	4
Business loans: | Commercial | Term Extension | Commercial mortgage: | Other business lines | Domestic
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	1	4
Business loans: | Commercial | Term Extension | Real estate construction: | Domestic
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	8	8
Business loans: | Commercial | Term Extension | Real estate construction: | Other business lines | Domestic
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	8	8
Business loans: | Commercial | Payment Delay | Domestic
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	0	21
Business loans: | Commercial | Payment Delay | Commercial mortgage: | Domestic
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	0	0
Business loans: | Commercial | Payment Delay | Commercial mortgage: | Other business lines | Domestic
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	0	0
Business loans: | Commercial | Payment Delay | Real estate construction: | Domestic
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	0	0
Business loans: | Commercial | Payment Delay | Real estate construction: | Other business lines | Domestic
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	0	0
Business loans: | Commercial | Interest Rate Reduction | Domestic
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	4	4
Business loans: | Commercial | Interest Rate Reduction | Commercial mortgage: | Domestic
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	0	1
Business loans: | Commercial | Interest Rate Reduction | Commercial mortgage: | Other business lines | Domestic
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	0	1
Business loans: | Commercial | Interest Rate Reduction | Real estate construction: | Domestic
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	0	0
Business loans: | Commercial | Interest Rate Reduction | Real estate construction: | Other business lines | Domestic
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	0	0
Business loans: | Commercial | Combination | Domestic
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	0	1
Business loans: | Commercial | Combination | Commercial mortgage: | Domestic
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	6	11
Business loans: | Commercial | Combination | Commercial mortgage: | Other business lines | Domestic
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	6	11
Business loans: | Commercial | Combination | Real estate construction: | Domestic
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	0	0
Business loans: | Commercial | Combination | Real estate construction: | Other business lines | Domestic
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	0	0
Retail loans:
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	$ 2	$ 3
Percent of Total Class	0.05%	0.07%
Retail loans: | Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	$ 0	$ 1
Retail loans: | Payment Delay
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	0	0
Retail loans: | Interest Rate Reduction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	1	1
Retail loans: | Combination
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	1	1
Retail loans: | Consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	$ 2	$ 3
Percent of Total Class	0.09%	0.13%
Retail loans: | Consumer | Home equity | Other business lines | Domestic
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	$ 2	$ 3
Percent of Total Class	0.11%	0.15%
Retail loans: | Consumer | Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	$ 0	$ 1
Retail loans: | Consumer | Term Extension | Home equity | Other business lines | Domestic
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	0	1
Retail loans: | Consumer | Payment Delay
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	0	0
Retail loans: | Consumer | Payment Delay | Home equity | Other business lines | Domestic
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	0	0
Retail loans: | Consumer | Interest Rate Reduction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	1	1
Retail loans: | Consumer | Interest Rate Reduction | Home equity | Other business lines | Domestic
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	1	1
Retail loans: | Consumer | Combination
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	1	1
Retail loans: | Consumer | Combination | Home equity | Other business lines | Domestic
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	$ 1	$ 1

Credit Quality And Allowance _9

Credit Quality And Allowance For Credit Losses (Financial Effect of Loan Modifications) (Details)	3 Months Ended	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2023
Financing Receivable, Troubled Debt Restructuring [Line Items]
Weighted-Average Term Extension (in months)	9 years 2 months 12 days	11 years
Weighted-Average Interest Rate Reduction	(1.09%)	(0.89%)
Business loans:
Financing Receivable, Troubled Debt Restructuring [Line Items]
Weighted-Average Term Extension (in months)	7 years 4 months 24 days	9 years 8 months 12 days
Weighted-Average Interest Rate Reduction	(0.81%)	(0.70%)
Business loans: | Commercial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Weighted-Average Term Extension (in months)	7 years 4 months 24 days	8 years
Weighted-Average Interest Rate Reduction	(0.50%)	(0.49%)
Retail loans: | Consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Weighted-Average Term Extension (in months)	131 years 1 month 6 days	129 years
Weighted-Average Interest Rate Reduction	(2.85%)	(2.64%)
Commercial mortgage: | Business loans: | Commercial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Weighted-Average Term Extension (in months)	8 years 8 months 12 days	22 years
Weighted-Average Interest Rate Reduction	(1.00%)	(0.79%)
Commercial mortgage: | Business loans: | Commercial | Other business lines
Financing Receivable, Troubled Debt Restructuring [Line Items]
Weighted-Average Term Extension (in months)	8 years 8 months 12 days	22 years
Weighted-Average Interest Rate Reduction	(1.00%)	(0.79%)
Home equity | Retail loans: | Consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Weighted-Average Term Extension (in months)	131 years 1 month 6 days	129 years
Weighted-Average Interest Rate Reduction	(2.85%)	(2.64%)
Consumer: | Retail loans: | Consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Weighted-Average Term Extension (in months)	131 years 1 month 6 days	129 years
Weighted-Average Interest Rate Reduction	(2.85%)	(2.64%)
Real estate construction: | Business loans: | Commercial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Weighted-Average Term Extension (in months)	6 years	6 years
Real estate construction: | Business loans: | Commercial | Other business lines
Financing Receivable, Troubled Debt Restructuring [Line Items]
Weighted-Average Term Extension (in months)	6 years	6 years

Credit Quality And Allowance_10

Credit Quality And Allowance For Credit Losses (Troubled Debt Restructurings) (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	$ 39	$ 58
Commercial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans			$ 52
Commercial | Commercial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	34
Commercial | Commercial | Domestic
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	27	34
Commercial | Commercial | Real estate construction: | Domestic | Other business lines
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans			3
Commercial | Commercial | Commercial mortgage: | Domestic | Other business lines
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	7		15
Consumer: | Residential mortgage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	5	5
Principal Deferrals
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	34		53
Principal Deferrals | Commercial | Commercial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	34		52
Principal Deferrals | Commercial | Commercial | Domestic
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	27		34
Principal Deferrals | Commercial | Commercial | Real estate construction: | Domestic | Other business lines
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans			3
Principal Deferrals | Commercial | Commercial | Commercial mortgage: | Domestic | Other business lines
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	7		15
Principal Deferrals | Consumer: | Consumer | Home equity | Domestic
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans			$ 1
Interest Rate Reduction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	5	5
Interest Rate Reduction | Consumer: | Residential mortgage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total loans	$ 5	$ 5

Derivative And Credit-Related_3

Derivative And Credit-Related Financial Instruments (Narrative) (Details) - USD ($) shares in Thousands, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Credit Derivatives [Line Items]
Cash received as collateral for derivative assets	$ 159		$ 159
Fair value of securities pledged as collateral for derivative assets	207		207
Cash posted as collateral for derivative liabilities	12		12
Net cash flow hedge income (loss) included in interest and fees on loans	(163)	$ (2)	(432)	$ 45
Price alignment income	17		32
Net gain (loss) on open foreign currency positions		$ 1	(1)	$ 0
Allowance for credit losses on lending-related commitments	42		42		$ 51
Allowance for credit losses on lending-related commitments, amount related to unused commitments to extend credit	39		39		44
Risk participation agreements covering standby and commercial letters of credit	89		89		107
Standby and commercial letters of credit	3,600		3,600		3,800
Carrying value of standby and commercial letters of credit included in accrued expenses and other liabilities	34		34		35
Deferred fees on standby and commercial letters of credit included in accrued expenses and other liabilities	31		31		28
Allowance for credit losses on lending-related commitments, amount related to standby and commercial letters of credit	3		3		7
Notional amount of derivative credit risk participation agreements	$ 1,000		$ 1,000		951
Weighted average remaining maturity of credit risk participation agreements (in years)			4 years 3 months 18 days
Other financial derivative liabilities | Visa Class B
Credit Derivatives [Line Items]
Derivative, underlying investment (in shares)	780		780
Recurring
Credit Derivatives [Line Items]
Fair value of derivative liability	$ 1,618		$ 1,618		1,799
Level 3 | Recurring
Credit Derivatives [Line Items]
Fair value of derivative liability	13		13		12
Level 3 | Recurring | Other financial derivative liabilities
Credit Derivatives [Line Items]
Fair value of derivative liability	$ 13		$ 13		$ 12

Derivative And Credit-Related_4

Derivative And Credit-Related Financial Instruments (Schedule Of Derivative Instruments) (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Derivatives, Fair Value [Line Items]
Notional/Contract Amount	$ 71,681	$ 67,665
Fair Value of Gross Derivative Assets	1,178	1,279
Fair Value of Gross Derivative Liabilities	1,508	1,695
Derivative asset, Netting adjustment - Offsetting derivative assets	(446)	(644)
Derivative liabilities, Netting adjustment - Offsetting derivative assets	(446)	(644)
Derivative assets, Netting adjustment - Cash collateral received	(155)	(180)
Derivative liabilities, Netting adjustment, Cash collateral posted	(12)	(4)
Net derivative assets included in the Consolidated Balance Sheets	577	455
Net derivative liabilities included in the Consolidated Balance Sheets	1,050	1,047
Derivative asset, securities pledged as collateral	(295)	(70)
Derivative liability, securities pledged as collateral	(207)	(202)
Net derivative assets after deducting amounts not offset in the Consolidated Balance Sheets	282	385
Net derivative liabilities after deducting amounts not offset in the Consolidated Balance Sheets	843	845
Credit valuation adjustments for counterparty credit risk	2
Risk management purposes
Derivatives, Fair Value [Line Items]
Notional/Contract Amount	31,962	30,142
Fair Value of Gross Derivative Assets	2	1
Fair Value of Gross Derivative Liabilities	3	53
Risk management purposes | Derivatives designated as hedging instruments | Fair value swaps - receive fixed/pay floating | Swaps
Derivatives, Fair Value [Line Items]
Notional/Contract Amount	6,300	3,150
Fair Value of Gross Derivative Assets	0	0
Fair Value of Gross Derivative Liabilities	0	0
Risk management purposes | Derivatives designated as hedging instruments | Cash flow swaps - receive fixed/pay floating | Swaps
Derivatives, Fair Value [Line Items]
Notional/Contract Amount	25,100	26,600
Fair Value of Gross Derivative Assets	0	0
Fair Value of Gross Derivative Liabilities	2	50
Risk management purposes | Derivatives designated as hedging instruments | Cash flow swaps - receive fixed/pay floating | Forward Starting Swap
Derivatives, Fair Value [Line Items]
Notional/Contract Amount	3,300	4,600
Risk management purposes | Derivatives used as economic hedges | Spot, forwards and swaps
Derivatives, Fair Value [Line Items]
Notional/Contract Amount	562	392
Fair Value of Gross Derivative Assets	2	1
Fair Value of Gross Derivative Liabilities	1	3
Customer-initiated and other activities
Derivatives, Fair Value [Line Items]
Notional/Contract Amount	39,719	37,523
Fair Value of Gross Derivative Assets	1,176	1,278
Fair Value of Gross Derivative Liabilities	1,505	1,642
Customer-initiated and other activities | Interest rate contracts
Derivatives, Fair Value [Line Items]
Notional/Contract Amount	22,265	20,298
Fair Value of Gross Derivative Assets	303	206
Fair Value of Gross Derivative Liabilities	658	594
Customer-initiated and other activities | Caps and floors written
Derivatives, Fair Value [Line Items]
Notional/Contract Amount	1,459	924
Fair Value of Gross Derivative Assets	0	0
Fair Value of Gross Derivative Liabilities	24	25
Customer-initiated and other activities | Caps and floors purchased
Derivatives, Fair Value [Line Items]
Notional/Contract Amount	1,459	924
Fair Value of Gross Derivative Assets	24	25
Fair Value of Gross Derivative Liabilities	0	0
Customer-initiated and other activities | Swaps
Derivatives, Fair Value [Line Items]
Notional/Contract Amount	19,347	18,450
Fair Value of Gross Derivative Assets	279	181
Fair Value of Gross Derivative Liabilities	634	569
Customer-initiated and other activities | Energy contracts
Derivatives, Fair Value [Line Items]
Notional/Contract Amount	14,873	14,521
Fair Value of Gross Derivative Assets	825	1,020
Fair Value of Gross Derivative Liabilities	805	1,006
Customer-initiated and other activities | Caps and floors written
Derivatives, Fair Value [Line Items]
Notional/Contract Amount	4,034	4,051
Fair Value of Gross Derivative Assets	1	0
Fair Value of Gross Derivative Liabilities	319	430
Customer-initiated and other activities | Caps and floors purchased
Derivatives, Fair Value [Line Items]
Notional/Contract Amount	4,034	4,051
Fair Value of Gross Derivative Assets	320	431
Fair Value of Gross Derivative Liabilities	1	0
Customer-initiated and other activities | Swaps
Derivatives, Fair Value [Line Items]
Notional/Contract Amount	6,805	6,419
Fair Value of Gross Derivative Assets	504	589
Fair Value of Gross Derivative Liabilities	485	576
Customer-initiated and other activities | Spot, forwards, options and swaps
Derivatives, Fair Value [Line Items]
Notional/Contract Amount	2,581	2,704
Fair Value of Gross Derivative Assets	48	52
Fair Value of Gross Derivative Liabilities	$ 42	$ 42

Derivative and Credit-Related_5

Derivative and Credit-Related Financial Instruments (Schedule of the Effects of Fair Value Hedging on the Consolidated Statements of Comprehensive Income (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Effects of fair value hedging on the Consolidated Statements o Comprehensive Income [Line Items]
Total interest on medium- and long-term debt	$ 106	$ 26	$ 273	$ 47
Swaps - fair value - receive fixed/pay floating | Risk management purposes | Interest rate swap
Effects of fair value hedging on the Consolidated Statements o Comprehensive Income [Line Items]
Hedged items	74	28	194	79
Derivatives designated as hedging instruments	$ 32	$ (2)	$ 79	$ (32)

Derivative And Credit-Related_6

Derivative And Credit-Related Financial Instruments (Schedule Of Weighted Average Maturity And Interest Rates On Risk Management Cash Flow Swaps) (Details) - USD ($) $ in Millions	9 Months Ended	12 Months Ended
	Sep. 30, 2023	Dec. 31, 2022
Schedule of Weighted Average Maturity And Interest Rates On Risk Management Cash Flow Swaps [Line Items]
Notional/contract amount	$ 71,681	$ 67,665
Risk management purposes
Schedule of Weighted Average Maturity And Interest Rates On Risk Management Cash Flow Swaps [Line Items]
Notional/contract amount	31,962	30,142
Swaps - cash flow - receive fixed/pay floating rate | Risk management purposes | Forward Starting Swap | Derivatives designated as hedging instruments
Schedule of Weighted Average Maturity And Interest Rates On Risk Management Cash Flow Swaps [Line Items]
Notional/contract amount	$ 3,300	$ 4,600
Variable rate loans | Swaps - cash flow - receive fixed/pay floating rate | Risk management purposes | Cash flow swap
Schedule of Weighted Average Maturity And Interest Rates On Risk Management Cash Flow Swaps [Line Items]
Time to maturity (in years)	4 years 1 month 6 days	4 years 7 months 6 days
Receive rate	2.38%	2.35%
Pay rate	5.36%	4.07%

Derivative And Credit-Related_7

Derivative And Credit-Related Financial Instruments (Schedule Of Weighted Average Maturity And Interest Rates On Risk Management Fair Value Swaps) (Details) - USD ($) $ in Millions	9 Months Ended	12 Months Ended
	Sep. 30, 2023	Dec. 31, 2022
Schedule of Weighted Average Maturity And Interest Rates On Risk Management Interest Rate Swaps [Line Items]
Notional/contract amount	$ 71,681	$ 67,665
Risk management purposes
Schedule of Weighted Average Maturity And Interest Rates On Risk Management Interest Rate Swaps [Line Items]
Notional/contract amount	31,962	30,142
Interest rate swap | Fair value swaps - receive fixed/pay floating | Risk management purposes
Schedule of Weighted Average Maturity And Interest Rates On Risk Management Interest Rate Swaps [Line Items]
Fair value hedge, cumulative increase (decrease)	(250)	(124)
Discounted fair value hedge, cumulative increase (decrease)	3	4
Interest rate swap | Fair value swaps - receive fixed/pay floating | Risk management purposes | Long-term Debt
Schedule of Weighted Average Maturity And Interest Rates On Risk Management Interest Rate Swaps [Line Items]
Carrying value of hedged items	$ 6,049	$ 3,024
Time to maturity (in years)	3 years 6 months	3 years 10 months 24 days
Receive rate	3.67%	3.52%
Pay rate	5.39%	4.90%

Derivative And Credit-Related_8

Derivative And Credit-Related Financial Instruments (Schedule Of Net Gains Recognized In Income On Customer-Initiated Derivatives) (Details) - Customer-initiated and other activities - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Derivative Instruments, Gain (Loss) [Line Items]
Net derivative gain recognized in income	$ 21	$ 35	$ 74	$ 86
Interest rate contracts
Derivative Instruments, Gain (Loss) [Line Items]
Net derivative gain recognized in income	5	9	17	28
Energy contracts
Derivative Instruments, Gain (Loss) [Line Items]
Net derivative gain recognized in income	4	14	17	22
Foreign exchange contracts
Derivative Instruments, Gain (Loss) [Line Items]
Net derivative gain recognized in income	$ 12	$ 12	$ 40	$ 36

Derivative And Credit-Related_9

Derivative And Credit-Related Financial Instruments (Schedule Of Financial Instruments With Off-Balance Sheet Credit Risk) (Details) - Maximum - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Unused Commitments to Extend Credit
Credit Related Financial Instrument [Line Items]
Loss contingency, estimate of possible loss	$ 32,526	$ 34,817
Commercial and other | Unused Commitments to Extend Credit
Credit Related Financial Instrument [Line Items]
Loss contingency, estimate of possible loss	28,357	30,800
Bankcard, revolving credit and home equity loan commitments | Unused Commitments to Extend Credit
Credit Related Financial Instrument [Line Items]
Loss contingency, estimate of possible loss	4,169	4,017
Standby letters of credit
Credit Related Financial Instrument [Line Items]
Loss contingency, estimate of possible loss	3,521	3,712
Commercial letters of credit
Credit Related Financial Instrument [Line Items]
Loss contingency, estimate of possible loss	$ 42	$ 39

Derivative And Credit-Relate_10

Derivative And Credit-Related Financial Instruments (Summary Of Internally Classified Watch List Letters Of Credit) (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Total criticized standby and commercial letters of credit	$ 52	$ 37
As a percentage of total outstanding standby and commercial letters of credit	1.50%	1%

Variable Interest Entities (V_3

Variable Interest Entities (VIEs) (Narrative) (Details) - USD ($)	3 Months Ended	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2023	Sep. 30, 2022
Variable Interest Entity [Line Items]
Unfunded commitments to fund tax credit entities	$ 219,000,000
Amount of financial or other support not contractually required provided by the Corporation to VIEs		$ 0	$ 0
Low Income Housing Tax Credit Entities
Variable Interest Entity [Line Items]
Exposure to loss as a result of involvement with VIEs	482,000,000	482,000,000
Other Tax Credit Entities
Variable Interest Entity [Line Items]
Exposure to loss as a result of involvement with VIEs	$ 27,000,000	$ 27,000,000

Variable Interest Entities (V_4

Variable Interest Entities (VIEs) (Impact Of VIEs On The Consolidated Statements Of Comprehensive Income) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Provision for income taxes:
Total provision for income taxes	$ 76	$ 104	$ 244	$ 229
Variable Interest Entity
Provision for income taxes:
Total provision for income taxes	(4)	(4)	(12)	(11)
Low income housing tax credits | Variable Interest Entity
Provision for income taxes:
Amortization of LIHTC investments	17	19	51	54
Low income housing tax credits and other tax benefits related to tax credit entities	(16)	(18)	(48)	(51)
Other tax benefits related to tax credit entities | Variable Interest Entity
Provision for income taxes:
Low income housing tax credits and other tax benefits related to tax credit entities	$ (5)	$ (5)	$ (15)	$ (14)

Medium- And Long-Term Debt (Sch

Medium- And Long-Term Debt (Schedule Of Medium- And Long-Term Debt) (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2023	Jun. 30, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Total Federal Home Loan Bank advances:		$ 4,000
Medium- and long-term debt	$ 6,049		$ 3,024
Parent company
Debt Instrument [Line Items]
Medium- and long-term notes	502		1,356
Medium- and long-term debt	737		1,593
Subsidiaries
Debt Instrument [Line Items]
Subordinated notes	927		955
Medium- and long-term notes	484		476
Total Federal Home Loan Bank advances:	3,901		0
Medium- and long-term debt	5,312		1,431
3.80% subordinated notes due 2026 | Parent company
Debt Instrument [Line Items]
Subordinated notes	$ 235		237
Stated interest rate	3.80%
Maturity year	2026
3.70% notes due 2023 | Parent company
Debt Instrument [Line Items]
Medium- and long-term notes	$ 0		841
Stated interest rate	3.70%
Maturity year	2023
4.00% notes due 2029 | Parent company
Debt Instrument [Line Items]
Medium- and long-term notes	$ 502		515
Stated interest rate	4%
Maturity year	2029
4.00% subordinated notes due 2025 | Subsidiaries
Debt Instrument [Line Items]
Subordinated notes	$ 331		331
Stated interest rate	4%
Maturity year	2025
7.875% subordinated notes due 2026 | Subsidiaries
Debt Instrument [Line Items]
Subordinated notes	$ 159		165
Stated interest rate	7.88%
Maturity year	2026
5.332 subordinated notes due 2033 | Subsidiaries
Debt Instrument [Line Items]
Subordinated notes	$ 437		459
Stated interest rate	5.33%
Maturity year	2033
2.50% notes due 2024 | Subsidiaries
Debt Instrument [Line Items]
Medium- and long-term notes	$ 484		476
Stated interest rate	2.50%
Maturity year	2024
5.07% advance due 2025 | Subsidiaries
Debt Instrument [Line Items]
Total Federal Home Loan Bank advances:	$ 986		0
Stated interest rate	5.07%
Maturity year	2025
4.79% advance due 2026 | Subsidiaries
Debt Instrument [Line Items]
Total Federal Home Loan Bank advances:	$ 978		0
Stated interest rate	4.79%
Maturity year	2026
4.49% advance due 2027 | Subsidiaries
Debt Instrument [Line Items]
Total Federal Home Loan Bank advances:	$ 973		0
Stated interest rate	4.49%
Maturity year	2027
4.49% advance due 2028 | Subsidiaries
Debt Instrument [Line Items]
Total Federal Home Loan Bank advances:	$ 964		$ 0
Stated interest rate	4.49%
Maturity year	2028

Medium- And Long-Term Debt (Nar

Medium- And Long-Term Debt (Narrative) (Details) - USD ($) $ in Millions	Sep. 30, 2023	Jun. 30, 2023	Dec. 31, 2022
Debt Disclosure [Abstract]
Floating-rate FHLB advances		$ 4,000
Fair value fixed-to-floating rate swap	3.79%
Total FHLB borrowings	$ 8,800
Short-term borrowings	4,812		$ 3,211
Potential future borrowings	8,500
Unamortized debt issuance cost	$ 7		$ 9

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Loss (Schedule Of Accumulated Other Comprehensive Loss) (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Accumulated net unrealized losses on investment securities:
Balance at beginning of period, net of tax	$ (2,319)	$ (99)
Net unrealized losses arising during the period	(613)	(2,977)
Less: Benefit for income taxes	(144)	(701)
Change in net unrealized losses on investment securities, net of tax	(469)	(2,276)
Balance at end of period, net of tax	(2,788)	(2,375)
Accumulated net losses on cash flow hedges:
Balance at beginning of period, net of tax	(942)	55
Net cash flow hedge losses arising during the period	(871)	(1,397)
Less: Benefit for income taxes	(204)	(329)
Change in net cash flow hedge losses arising during the period, net of tax	(667)	(1,068)
Net cash flow (losses) gains included in interest and fees on loans	(432)	45
Less: (Benefit) provision for income taxes	(101)	11
Reclassification adjustment for net cash flow hedge (losses) gains included in net income, net of tax	(331)	34
Change in net cash flow hedge losses, net of tax	(336)	(1,102)
Balance at end of period, net of tax	(1,278)	(1,047)
Accumulated defined benefit pension and other postretirement plans adjustment:
Balance at beginning of period, net of tax	(481)	(168)
Amortization of actuarial net loss	27	21
Amortization of prior service credit	(17)	(18)
Total amounts recognized in other noninterest expenses	10	3
Less: Provision for income taxes	3	0
Adjustment for amounts recognized as components of net periodic benefit credit during the period, net of tax	7	3
Change in defined benefit pension and other postretirement plans adjustment, net of tax	7	3
Balance at end of period, net of tax	(474)	(165)
Total accumulated other comprehensive loss at end of period, net of tax	(4,540)	$ (3,587)	$ (3,742)
Cash flow hedge loss to be reclassified within 12 months	$ 507

Net Income Per Common Share (Ba

Net Income Per Common Share (Basic And Diluted Net Income Per Share) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Earnings Per Share [Abstract]
Net income	$ 251	$ 351	$ 848	$ 801
Income allocated to participating securities	1	2	4	4
Preferred stock dividends	6	6	17	17
Net income attributable to common shares	$ 244	$ 343	$ 827	$ 780
Basic average common shares (in shares)	132	131	132	131
Basic net income per common share (in dollars per share)	$ 1.85	$ 2.63	$ 6.27	$ 5.96
Basic average common shares (in shares)	132	131	132	131
Net effect of the assumed exercise of stock awards (in shares)	1	1	1	2
Diluted average common shares (in shares)	133	132	133	133
Diluted net income per common share (in dollars per share)	$ 1.84	$ 2.60	$ 6.24	$ 5.88

Net Income Per Common Share (An

Net Income Per Common Share (Ant-Dilutive Schedule) (Details) - Stock Options - $ / shares shares in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Average outstanding options	1,633	373	1,540	337
Minimum
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Range of exercise prices	$ 49.20	$ 79.01	$ 49.20	$ 70.18
Maximum
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Range of exercise prices	$ 95.25	$ 95.25	$ 95.25	$ 95.25

Employee Benefit Plans (Net Per

Employee Benefit Plans (Net Periodic Defined Benefit Cost) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Defined Benefit Plan Disclosure [Line Items]
Net periodic defined benefit credit			$ (20)	$ (68)
Qualified Plan
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 8	$ 9	23	28
Interest cost	21	16	64	47
Expected return on plan assets	(41)	(51)	(124)	(151)
Amortization of prior service credit	(3)	(4)	(10)	(11)
Amortization of net loss	8	4	24	14
Total other components of net benefit credit	(15)	(35)	(46)	(101)
Net periodic defined benefit credit	(7)	(26)	(23)	(73)
Non-Qualified Plan
Defined Benefit Plan Disclosure [Line Items]
Service cost	1	1	2	2
Interest cost	2	1	6	4
Amortization of prior service credit	(3)	(2)	(7)	(7)
Amortization of net loss	1	3	3	7
Total other components of net benefit credit	0	2	2	4
Net periodic defined benefit credit	1	3	4	6
Postretirement Benefit Plan
Defined Benefit Plan Disclosure [Line Items]
Interest cost	1	1	1	1
Expected return on plan assets	(1)	(1)	(2)	(2)
Net periodic defined benefit credit	$ 0	$ 0	$ (1)	$ (1)

Income Taxes And Tax-Related _2

Income Taxes And Tax-Related Items (Income Taxes And Tax-Related Items) (Narrative) (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2023	Dec. 31, 2022
Income Tax Contingency [Line Items]
Unrecognized tax benefits	$ 13	$ 16
Tax-related interest and penalties payable	1	5
Net deferred tax assets	1,400	1,100
Deferred Tax Assets, Other	269
Deferred tax assets, operating loss carryforwards, state and local	2	2
Deferred tax assets, federal valuation allowance	5	4
Deferred tax assets, state valuation allowance	$ 1	$ 1
Minimum
Income Tax Contingency [Line Items]
Operating loss carryforwards, expiration date - federal	2028
Operating loss carryforwards, expiration date - state	2023
Maximum
Income Tax Contingency [Line Items]
Operating loss carryforwards, expiration date - federal	2032
Operating loss carryforwards, expiration date - state	2041

Contingent Liabilities (Narrati

Contingent Liabilities (Narrative) (Details) - Pending Litigation	Sep. 30, 2023 USD ($)
Minimum
Loss Contingencies [Line Items]
Loss contingency, estimate of possible loss	$ 0
Maximum
Loss Contingencies [Line Items]
Loss contingency, estimate of possible loss	$ 201,000,000

Strategic Lines of Business (Na

Strategic Lines of Business (Narrative) (Details)	9 Months Ended
	Sep. 30, 2023 segment
Segment Reporting [Abstract]
Number of Major Business Segments	3

Strategic Lines of Business (Bu

Strategic Lines of Business (Business Segment Financial Results) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Earnings summary:
Net interest income (expense)	$ 601	$ 707	$ 1,930	$ 1,724
Provision for credit losses	14	28	77	27
Noninterest income	295	278	880	790
Noninterest expenses	555	502	1,641	1,457
Provision (benefit) for income taxes	76	104	244	229
Net income (loss)	251	351	848	801
Net charge-offs	6	13	2	21
Selected average balances:
Assets	89,150	85,422	88,229	88,440
Loans	53,987	51,113	54,276	49,815
Deposits	$ 65,883	$ 73,976	$ 66,009	$ 76,871
Return on average assets	1.12%	1.63%	1.29%	1.21%
Efficiency ratio	61.86%	50.75%	58.26%	57.67%
Commercial Bank
Earnings summary:
Net interest income (expense)	$ 505	$ 478	$ 1,550	$ 1,232
Provision for credit losses	22	16	80	1
Noninterest income	150	169	460	461
Noninterest expenses	257	242	757	712
Provision (benefit) for income taxes	89	94	270	229
Net income (loss)	287	295	903	751
Net charge-offs	6	13	1	24
Selected average balances:
Assets	49,459	48,323	49,906	46,992
Loans	46,477	44,043	46,797	42,928
Deposits	$ 31,868	$ 41,471	$ 33,204	$ 43,733
Return on average assets	2.30%	2.42%	2.42%	2.07%
Efficiency ratio	39.34%	37.54%	37.64%	41.95%
Retail Bank
Earnings summary:
Net interest income (expense)	$ 208	$ 188	$ 644	$ 464
Provision for credit losses	0	2	2	7
Noninterest income	31	29	89	89
Noninterest expenses	175	170	511	508
Provision (benefit) for income taxes	16	11	53	9
Net income (loss)	48	34	167	29
Net charge-offs	0	0	0	(1)
Selected average balances:
Assets	2,985	2,799	2,944	2,791
Loans	2,250	2,066	2,223	2,031
Deposits	$ 24,034	$ 26,665	$ 24,394	$ 26,890
Return on average assets	0.78%	0.51%	0.89%	0.15%
Efficiency ratio	72.70%	77%	69.23%	90.82%
Wealth Management
Earnings summary:
Net interest income (expense)	$ 49	$ 55	$ 158	$ 138
Provision for credit losses	(9)	5	(9)	11
Noninterest income	78	77	233	226
Noninterest expenses	102	87	297	259
Provision (benefit) for income taxes	9	10	25	23
Net income (loss)	25	30	78	71
Net charge-offs	0	0	1	(2)
Selected average balances:
Assets	5,557	5,097	5,510	4,974
Loans	5,227	4,973	5,256	4,841
Deposits	$ 3,950	$ 5,293	$ 4,200	$ 5,520
Return on average assets	1.81%	2.08%	1.92%	1.61%
Efficiency ratio	80.01%	65.86%	75.70%	71.08%
Finance
Earnings summary:
Net interest income (expense)	$ (187)	$ (22)	$ (493)	$ (118)
Provision for credit losses	0	0	0	0
Noninterest income	40	6	93	36
Noninterest expenses	1	0	4	0
Provision (benefit) for income taxes	(37)	(6)	(101)	(25)
Net income (loss)	(111)	(10)	(303)	(57)
Net charge-offs	0	0	0	0
Selected average balances:
Assets	19,832	22,140	20,469	20,831
Loans	0	0	0	0
Deposits	5,711	144	3,858	300
Other
Earnings summary:
Net interest income (expense)	26	8	71	8
Provision for credit losses	1	5	4	8
Noninterest income	(4)	(3)	5	(22)
Noninterest expenses	20	3	72	(22)
Provision (benefit) for income taxes	(1)	(5)	(3)	(7)
Net income (loss)	2	2	3	7
Net charge-offs	0	0	0	0
Selected average balances:
Assets	11,317	7,063	9,400	12,852
Loans	33	31	0	15
Deposits	$ 320	$ 403	$ 353	$ 428

Revenue From Contracts With C_3

Revenue From Contracts With Customers (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Segment Reporting, Revenue Reconciling Item
Total revenue from contracts with customers	$ 201	$ 198	$ 606	$ 596
Other sources of noninterest income	94	80	274	194
Total noninterest income	295	278	880	790
Commercial Bank
Segment Reporting, Revenue Reconciling Item
Total revenue from contracts with customers	98	97	293	292
Other sources of noninterest income	52	72	167	169
Total noninterest income	150	169	460	461
Retail Bank
Segment Reporting, Revenue Reconciling Item
Total revenue from contracts with customers	30	28	85	87
Other sources of noninterest income	1	1	4	2
Total noninterest income	31	29	89	89
Wealth Management
Segment Reporting, Revenue Reconciling Item
Total revenue from contracts with customers	75	73	229	217
Other sources of noninterest income	3	4	4	9
Total noninterest income	78	77	233	226
Finance & Other
Segment Reporting, Revenue Reconciling Item
Total revenue from contracts with customers	(2)	0	(1)	0
Other sources of noninterest income	38	3	99	14
Total noninterest income	36	3	98	14
Card fees
Segment Reporting, Revenue Reconciling Item
Total revenue from contracts with customers	71	67	212	205
Card fees | Commercial Bank
Segment Reporting, Revenue Reconciling Item
Total revenue from contracts with customers	58	56	175	171
Card fees | Retail Bank
Segment Reporting, Revenue Reconciling Item
Total revenue from contracts with customers	12	10	34	31
Card fees | Wealth Management
Segment Reporting, Revenue Reconciling Item
Total revenue from contracts with customers	1	1	3	3
Card fees | Finance & Other
Segment Reporting, Revenue Reconciling Item
Total revenue from contracts with customers	0	0	0	0
Fiduciary income
Segment Reporting, Revenue Reconciling Item
Total revenue from contracts with customers	59	58	179	178
Fiduciary income | Commercial Bank
Segment Reporting, Revenue Reconciling Item
Total revenue from contracts with customers	1	0	1	0
Fiduciary income | Retail Bank
Segment Reporting, Revenue Reconciling Item
Total revenue from contracts with customers	0	0	0	0
Fiduciary income | Wealth Management
Segment Reporting, Revenue Reconciling Item
Total revenue from contracts with customers	58	58	178	178
Fiduciary income | Finance & Other
Segment Reporting, Revenue Reconciling Item
Total revenue from contracts with customers	0	0	0	0
Service charges on deposit accounts
Segment Reporting, Revenue Reconciling Item
Total revenue from contracts with customers	47	50	140	148
Service charges on deposit accounts | Commercial Bank
Segment Reporting, Revenue Reconciling Item
Total revenue from contracts with customers	32	34	95	101
Service charges on deposit accounts | Retail Bank
Segment Reporting, Revenue Reconciling Item
Total revenue from contracts with customers	14	15	41	43
Service charges on deposit accounts | Wealth Management
Segment Reporting, Revenue Reconciling Item
Total revenue from contracts with customers	1	1	4	4
Service charges on deposit accounts | Finance & Other
Segment Reporting, Revenue Reconciling Item
Total revenue from contracts with customers	0	0	0	0
Commercial loan servicing fees
Segment Reporting, Revenue Reconciling Item
Total revenue from contracts with customers	3	3	9	9
Commercial loan servicing fees | Commercial Bank
Segment Reporting, Revenue Reconciling Item
Total revenue from contracts with customers	3	3	9	9
Commercial loan servicing fees | Retail Bank
Segment Reporting, Revenue Reconciling Item
Total revenue from contracts with customers	0	0	0	0
Commercial loan servicing fees | Wealth Management
Segment Reporting, Revenue Reconciling Item
Total revenue from contracts with customers	0	0	0	0
Commercial loan servicing fees | Finance & Other
Segment Reporting, Revenue Reconciling Item
Total revenue from contracts with customers	0	0	0	0
Capital markets income
Segment Reporting, Revenue Reconciling Item
Total revenue from contracts with customers	4	3	12	8
Capital markets income | Commercial Bank
Segment Reporting, Revenue Reconciling Item
Total revenue from contracts with customers	4	3	12	8
Capital markets income | Retail Bank
Segment Reporting, Revenue Reconciling Item
Total revenue from contracts with customers	0	0	0	0
Capital markets income | Wealth Management
Segment Reporting, Revenue Reconciling Item
Total revenue from contracts with customers	0	0	0	0
Capital markets income | Finance & Other
Segment Reporting, Revenue Reconciling Item
Total revenue from contracts with customers	0	0	0	0
Brokerage fees
Segment Reporting, Revenue Reconciling Item
Total revenue from contracts with customers	6	6	22	14
Brokerage fees | Commercial Bank
Segment Reporting, Revenue Reconciling Item
Total revenue from contracts with customers	0	0	0	0
Brokerage fees | Retail Bank
Segment Reporting, Revenue Reconciling Item
Total revenue from contracts with customers	0	0	0	0
Brokerage fees | Wealth Management
Segment Reporting, Revenue Reconciling Item
Total revenue from contracts with customers	8	6	24	14
Brokerage fees | Finance & Other
Segment Reporting, Revenue Reconciling Item
Total revenue from contracts with customers	(2)	0	(2)	0
Other noninterest income
Segment Reporting, Revenue Reconciling Item
Total revenue from contracts with customers	11	11	32	34
Other noninterest income | Commercial Bank
Segment Reporting, Revenue Reconciling Item
Total revenue from contracts with customers	0	1	1	3
Other noninterest income | Retail Bank
Segment Reporting, Revenue Reconciling Item
Total revenue from contracts with customers	4	3	10	13
Other noninterest income | Wealth Management
Segment Reporting, Revenue Reconciling Item
Total revenue from contracts with customers	7	7	20	18
Other noninterest income | Finance & Other
Segment Reporting, Revenue Reconciling Item
Total revenue from contracts with customers	$ 0	$ 0	$ 1	$ 0