KeyCorp (KEY) 10-Q 4 May 23 2023 Q1 Quarterly report Financial data

Cover Page

Cover Page - shares	3 Months Ended
	Mar. 31, 2023	May 02, 2023
Entity Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2023
Document Transition Report	false
Entity File Number	001-11302
Entity Registrant Name	KeyCorp
Entity Incorporation, State or Country Code	OH
Entity Tax Identification Number	34-6542451
Entity Address, Address Line One	127 Public Square,
Entity Address, City or Town	Cleveland,
Entity Address, State or Province	OH
Entity Address, Postal Zip Code	44114-1306
City Area Code	216
Local Phone Number	689-3000
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		935,264,442
Entity Central Index Key	0000091576
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	Q1
Amendment Flag	false
Common Stock
Entity Information [Line Items]
Title of 12(b) Security	Common Shares, $1 par value
Trading Symbol	KEY
Security Exchange Name	NYSE
Series E Preferred Stock
Entity Information [Line Items]
Title of 12(b) Security	Perpetual Non-Cumulative Preferred Stock, Series E)
Trading Symbol	KEY PrI
Security Exchange Name	NYSE
Series F Preferred Stock
Entity Information [Line Items]
Title of 12(b) Security	Cumulative Preferred Stock, Series F)
Trading Symbol	KEY PrJ
Security Exchange Name	NYSE
Series G Preferred Stock
Entity Information [Line Items]
Title of 12(b) Security	Cumulative Preferred Stock, Series G)
Trading Symbol	KEY PrK
Security Exchange Name	NYSE
Series H Preferred Stock
Entity Information [Line Items]
Title of 12(b) Security	Cumulative Preferred Stock, Series H)
Trading Symbol	KEY PrL
Security Exchange Name	NYSE

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Millions		Mar. 31, 2023	Dec. 31, 2022
ASSETS
Cash and due from banks		$ 784	$ 887
Short-term investments		8,410	2,432
Trading account assets		1,118	829
Securities available for sale		39,498	39,117
Held-to-maturity securities (fair value: $9,085 and $8,113)		9,561	8,710
Other investments		1,587	1,308
Loans, net of unearned income of $353 and $368		119,971	119,394
Less: Allowance for loan and lease losses		(1,380)	(1,337)
Net loans		118,591	118,057
Loans held for sale	[1]	1,211	963
Premises and equipment		628	636
Goodwill		2,752	2,752
Other intangible assets		85	94
Corporate-owned life insurance		4,372	4,369
Accrued income and other assets		8,512	9,223
Discontinued assets		410	436
Total assets		197,519	189,813
Deposits in domestic offices:
Interest-bearing deposits		106,841	101,761
Noninterest-bearing deposits		37,307	40,834
Total deposits		144,148	142,595
Federal funds purchased and securities sold under repurchase agreements		1,374	4,077
Bank notes and other short-term borrowings		10,061	5,386
Accrued expense and other liabilities		4,861	4,994
Long-term debt		22,753	19,307
Total liabilities		183,197	176,359
EQUITY
Preferred stock		2,500	2,500
Common Shares, $1 par value; authorized 2,100,000,000 shares; issued 1,256,702,081 shares		1,257	1,257
Capital surplus		6,207	6,286
Retained earnings		15,700	15,616
Treasury stock, at cost (321,472,743 and 323,377,500 shares)		(5,868)	(5,910)
Accumulated other comprehensive income (loss)		(5,474)	(6,295)
Total equity		14,322	13,454
Total liabilities and equity		$ 197,519	$ 189,813
[1]Total loans held for sale include real estate — residential mortgage loans held for sale at fair value of $45 million at March 31, 2023, and $24 million at December 31, 2022.

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Fair Value	$ 9,085	$ 8,113
Financing receivable, unearned income	$ 353	$ 368
Common shares, par value (in usd per share)	$ 1	$ 1
Common shares, shares authorized (in shares)	2,100,000,000	2,100,000,000
Common shares, shares issued (in shares)	1,256,702,081	1,256,702,081
Treasury stock, shares (in shares)	321,472,743	323,377,500
Residential Mortgage
Loans held for sale	$ 45	$ 24

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) shares in Thousands, $ in Millions		3 Months Ended
		Mar. 31, 2023	Mar. 31, 2022
INTEREST INCOME
Loans		$ 1,476	$ 837
Loans held for sale		13	12
Securities available for sale		194	173
Held-to-maturity securities		74	46
Trading account assets		12	6
Short-term investments		42	4
Other investments		13	2
Total interest income		1,824	1,080
INTEREST EXPENSE
Deposits		350	14
Federal funds purchased and securities sold under repurchase agreements		22	0
Bank notes and other short-term borrowings		78	3
Long-term debt		275	49
Total interest expense		725	66
NET INTEREST INCOME		1,099	1,014
Provision for credit losses		139	83
Net interest income after provision for credit losses		960	931
NONINTEREST INCOME
Trust and investment services income		128	136
Investment banking and debt placement fees		145	163
Cards and payments income		81	80
Service charges on deposit accounts		67	91
Corporate services income		76	91
Commercial mortgage servicing fees		46	36
Corporate-owned life insurance income		29	31
Consumer mortgage income		11	21
Operating lease income and other leasing gains		25	32
Other income		0	(5)
Total noninterest income		608	676
NONINTEREST EXPENSE
Personnel		701	630
Net occupancy		70	73
Computer processing		92	77
Business services and professional fees		45	53
Equipment		22	23
Operating lease expense		20	28
Marketing		21	28
Other expense		205	158
Total noninterest expense		1,176	1,070
INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES		392	537
Income taxes		81	90
INCOME (LOSS) FROM CONTINUING OPERATIONS		311	447
Income (loss) from discontinued operations		1	1
NET INCOME (LOSS)		312	448
Less: Net income (loss) attributable to noncontrolling interests		0	0
NET INCOME (LOSS) ATTRIBUTABLE TO KEY		312	448
Income (loss) from continuing operations attributable to Key common shareholders		275	420
Net income (loss) attributable to Key common shareholders		$ 276	$ 421
Per Common Share:
Income (loss) from continuing operations attributable to Key common shareholders (in usd per share)		$ 0.30	$ 0.45
Income (loss) from discontinued operations, net of taxes (in usd per share)		0	0
Net income (loss) attributable to Key common shareholders (in usd per share)	[1]	0.30	0.46
Per Common Share — assuming dilution:
Income (loss) from continuing operations attributable to Key common shareholders (in usd per share)		0.30	0.45
Income (loss) from discontinued operations, net of taxes (in usd per share)		0	0
Net income (loss) attributable to Key common shareholders (in usd per share)	[1]	$ 0.30	$ 0.45
Weighted-average Common Shares outstanding (in shares)		926,490	922,941
Effect of Common Share options and other stock awards (in shares)		7,314	10,692
Weighted-average Common Shares and potential Common Shares outstanding (in shares)	[2]	933,804	933,634
[1]EPS may not foot due to rounding.[2]Assumes conversion of Common Share options and other stock awards and/or convertible preferred stock, as applicable.

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 312	$ 448
Other comprehensive income (loss), net of tax:
Net unrealized gains (losses) on securities available for sale, net of income taxes of $(181) and $562	575	(1,784)
Net unrealized gains (losses) on derivative financial instruments, net of income taxes of $(77) and $177	245	(561)
Net pension and postretirement benefit costs, net of income taxes of $0 and $(1)	1	2
Total other comprehensive income (loss), net of tax	821	(2,343)
Comprehensive income (loss)	1,133	(1,895)
Less: Comprehensive income attributable to noncontrolling interests	0	0
Comprehensive income (loss) attributable to Key	$ 1,133	$ (1,895)

Consolidated Statements of Co_2

Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Statement of Comprehensive Income [Abstract]
Net unrealized gains (losses) on securities available for sale, tax	$ (181)	$ 562
Net unrealized gains (losses) on derivative financial instruments, tax	(77)	177
Net pension and postretirement benefit costs, tax	$ 0	$ (1)

Consolidated Statements of Chan

Consolidated Statements of Changes in Equity - USD ($) $ in Millions	Total	Series D Preferred Stock	Series E Preferred Stock	Series F Preferred Stock	Series G Preferred Stock	Series H Preferred Stock	Preferred Stock	Common Stock	Capital Surplus	Retained Earnings	Retained Earnings Series D Preferred Stock	Retained Earnings Series E Preferred Stock	Retained Earnings Series F Preferred Stock	Retained Earnings Series G Preferred Stock	Retained Earnings Series H Preferred Stock	Treasury Stock, at Cost	Accumulated Other Comprehensive Income (Loss)
Beginning balance, Preferred Shares (in shares) at Dec. 31, 2021							1,396,000
Beginning balance, Common Shares (in shares) at Dec. 31, 2021								928,850,000
Beginning balance at Dec. 31, 2021	$ 17,423						$ 1,900	$ 1,257	$ 6,278	$ 14,553						$ (5,979)	$ (586)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	448									448
Other comprehensive income (loss)	(2,343)																(2,343)
Deferred compensation	(7)								(7)
Cash dividends declared
Cash dividends declared on common shares	(182)									(182)
Cash dividends declared on preferred stock		$ (6)	$ (8)	$ (6)	$ (6)						$ (6)	$ (8)	$ (6)	$ (6)
Open market Common Share repurchases (in shares)								0
Open market Common Share repurchases	0															0
Employee equity compensation program Common Share repurchases (in shares)								(1,707,000)
Employee equity compensation program Common Share repurchases	(44)															(44)
Common shares reissued (returned) for stock options and other employee benefit plans (in shares)								5,255,000
Common shares reissued (returned) for stock options and other employee benefit plans	39								(57)							96
Ending balance, Preferred Shares (in shares) at Mar. 31, 2022							1,396,000
Ending balance, Common Shares (in shares) at Mar. 31, 2022								932,398,000
Ending balance at Mar. 31, 2022	15,308						$ 1,900	$ 1,257	6,214	14,793						(5,927)	(2,929)
Beginning balance, Preferred Shares (in shares) at Dec. 31, 2022							1,996,000
Beginning balance, Common Shares (in shares) at Dec. 31, 2022								933,325,000
Beginning balance at Dec. 31, 2022	13,454						$ 2,500	$ 1,257	6,286	15,616						(5,910)	(6,295)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	312									312
Other comprehensive income (loss)	821																821
Deferred compensation	(6)								(6)
Cash dividends declared
Cash dividends declared on common shares	(192)									(192)
Cash dividends declared on preferred stock		$ (7)	$ (8)	$ (6)	$ (6)	$ (9)					$ (7)	$ (8)	$ (6)	$ (6)	$ (9)
Open market Common Share repurchases (in shares)								(2,550,000)
Open market Common Share repurchases	(38)															(38)
Employee equity compensation program Common Share repurchases (in shares)								(1,783,000)
Employee equity compensation program Common Share repurchases	(34)															(34)
Common shares reissued (returned) for stock options and other employee benefit plans (in shares)								6,237,000
Common shares reissued (returned) for stock options and other employee benefit plans	41								(73)							114
Ending balance, Preferred Shares (in shares) at Mar. 31, 2023		21,000	500,000	425,000	450,000	600,000	1,996,000
Ending balance, Common Shares (in shares) at Mar. 31, 2023								935,229,000
Ending balance at Mar. 31, 2023	$ 14,322						$ 2,500	$ 1,257	$ 6,207	$ 15,700						$ (5,868)	$ (5,474)

Consolidated Statements of Ch_2

Consolidated Statements of Changes in Equity (Parenthetical) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Cash dividends declared on Common Shares (in usd per share)	$ 0.205	$ 0.195
Adjustments To Additional Paid In Capital, Increase (Decrease) From Deferred Compensation Arrangement	$ (6)	$ (7)
Capital Surplus
Adjustments To Additional Paid In Capital, Increase (Decrease) From Deferred Compensation Arrangement	$ (6)	$ (7)
Series D Preferred Stock
Cash dividends declared on Preferred Stock (in usd per share)	$ 12.50	$ 12.50
Series E Preferred Stock
Cash dividends declared on Preferred Stock (in usd per share)	0.382813	0.382813
Series F Preferred Stock
Cash dividends declared on Preferred Stock (in usd per share)	0.353125	0.353125
Series G Preferred Stock
Cash dividends declared on Preferred Stock (in usd per share)	0.351563	$ 0.351563
Series H Preferred Stock
Cash dividends declared on Preferred Stock (in usd per share)	$ 0.387500

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
OPERATING ACTIVITIES
Net income (loss)	$ 312	$ 448
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Provision for credit losses	139	83
Depreciation and amortization expense, net	36	40
Accretion of acquired loans	5	5
Increase in cash surrender value of corporate-owned life insurance	(26)	(27)
Stock-based compensation expense	34	29
Deferred income taxes (benefit)	75	124
Proceeds from sales of loans held for sale	1,534	4,317
Originations of loans held for sale, net of repayments	(1,779)	(2,711)
Net losses (gains) on sales of loans held for sale	(15)	(48)
Net losses (gains) on leased equipment	(1)	(1)
Net securities losses (gains)	0	0
Net losses (gains) on sales of fixed assets	12	(6)
Net decrease (increase) in trading account assets	(289)	(147)
Net transfers of loans held for sale	0	0
Other operating activities, net	681	(1,225)
NET CASH PROVIDED BY (USED IN) OPERATING ACTIVITIES	718	881
INVESTING ACTIVITIES
Net decrease (increase) in short-term investments, excluding acquisitions	(5,978)	7,129
Purchases of securities available for sale	(200)	(2,515)
Proceeds from sales of securities available for sale	0	0
Proceeds from prepayments and maturities of securities available for sale	563	1,534
Proceeds from prepayments and maturities of held-to-maturity securities	333	673
Purchases of held-to-maturity securities	(1,179)	(4)
Purchases of other investments	(493)	(111)
Proceeds from sales of other investments	204	5
Proceeds from prepayments and maturities of other investments	3	4
Net decrease (increase) in loans, excluding acquisitions, sales and transfers	(613)	(4,793)
Proceeds from sales of portfolio loans	25	49
Proceeds from corporate-owned life insurance	22	14
Purchases of premises, equipment, and software	(24)	(18)
Proceeds from sales of premises and equipment	1	7
NET CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES	(7,336)	1,974
FINANCING ACTIVITIES
Net increase (decrease) in deposits	1,553	(3,909)
Net increase (decrease) in short-term borrowings	1,972	2,060
Net proceeds from issuance of long-term debt	4,490	4,001
Payments on long-term debt	(1,201)	(4,989)
Issuance of preferred shares	0	0
Open market common share repurchases	(38)	0
Employee equity compensation program Common Share repurchases	(34)	(44)
Net proceeds from reissuance of Common Shares	1	5
Cash dividends paid	(228)	(208)
NET CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES	6,515	(3,084)
NET INCREASE (DECREASE) IN CASH AND DUE FROM BANKS	(103)	(229)
CASH AND DUE FROM BANKS AT BEGINNING OF PERIOD	887	913
CASH AND DUE FROM BANKS AT END OF PERIOD	784	684
Additional disclosures relative to cash flows:
Interest paid	426	58
Income taxes paid (refunded)	46	19
Noncash items:
Reduction of secured borrowing and related collateral	2	2
Loans transferred to portfolio from held for sale	17	0
Loans transferred to held for sale from portfolio	4	0
Loans transferred to OREO	3	1
CMBS risk retentions	52	0
ABS risk retentions	$ 8	$ 10

Basis of Presentation and Accou

Basis of Presentation and Accounting Policies	3 Months Ended
	Mar. 31, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation and Accounting Policies	1. Basis of Presentation and Accounting Policies The consolidated financial statements include the accounts of KeyCorp and its subsidiaries. All significant intercompany accounts and transactions have been eliminated in consolidation. Some previously reported amounts related to derivative valuations and reserves have been reclassified from Other Income to Corporate Services Income to conform to current reporting practices. The consolidated financial statements include any voting rights entities in which we have a controlling financial interest. In accordance with the applicable accounting guidance for consolidations, we consolidate a VIE if we have: (i) a variable interest in the entity; (ii) the power to direct activities of the VIE that most significantly affect the entity’s economic performance; and (iii) the obligation to absorb losses of the entity or the right to receive benefits from the entity that could potentially be significant to the VIE (i.e., we are considered to be the primary beneficiary). Variable interests can include equity interests, subordinated debt, derivative contracts, leases, service agreements, guarantees, standby letters of credit, loan commitments, and other contracts, agreements, and financial instruments. See Note 11 (“Variable Interest Entities”) for information on our involvement with VIEs. We use the equity method to account for unconsolidated investments in voting rights entities or VIEs if we have significant influence over the entity’s operating and financing decisions (usually defined as a voting or economic interest of 20% to 50%, but not controlling). Unconsolidated investments in voting rights entities or VIEs in which we have a voting or economic interest of less than 20% are carried at the cost measurement alternative or at fair value. Investments held by our registered broker-dealer and investment company subsidiaries (principal investing entities and Real Estate Capital line of business) are carried at fair value. The unaudited consolidated interim financial statements reflect all adjustments of a normal recurring nature and disclosures that are necessary for a fair presentation of the results for the interim periods presented. The results of operations for the interim period are not necessarily indicative of the results of operations to be expected for the full year. The interim financial statements should be read in conjunction with the audited consolidated financial statements and related notes included in our 2022 Form 10-K. In preparing these financial statements, subsequent events were evaluated through the time the financial statements were issued. Financial statements are considered issued when they are widely distributed to all shareholders and other financial statement users or filed with the SEC. Accounting Guidance Adopted in 2023 Standard Date of Adoption Description Effect on Financial Statements or ASU 2021-08, January 1, 2023 Early adoption is At the acquisition date, an acquirer must account for any acquired revenue contracts in The guidance should be applied on a prospective basis. The adoption of this guidance did not have a material impact on Key’s financial condition or results of operations. ASU 2022-01, January 1, 2023 Early adoption is This guidance allows entities to apply the same portfolio hedging method to both The guidance should be applied on a prospective, retrospective or modified retrospective basis depending on the amendment. The adoption of this guidance did not have a material impact on Key’s financial condition or results of operations. ASU 2022-02, January 1, 2023 Early adoption is The amendments eliminate TDR guidance and Entities must disclose current-period gross write-offs on an amortized cost basis by credit The guidance should be applied on a prospective basis except for amendments related to recognition and measurement of TDRs, where a modified retrospective transition method is optional. As part of the adoption of this guidance, Key elected to discontinue use of a discounted cash flow (DCF) methodology and apply its portfolio-based allowance approach to non-collateral dependent modified loans. The adoption did not result in a material impact on Key’s financial condition or results of operations. Additionally, disclosures for gross charges-offs and loan modifications made to borrowers experiencing financial difficulty have been included in Note 4 (Asset Quality). The following are additional disclosures about our significant accounting policies updated in the first quarter of 2023 or impacted by the adoption of ASU 2022-02. Loans Effective January 1, 2023, we adopted the provisions of ASU 2022-02, Financial Instruments —Credit Losses (Topic 326), which eliminated the accounting for troubled debt restructurings while expanding loan modification and vintage disclosure requirements. Under this guidance we assess all loan modifications to determine whether one is granted to a borrower experiencing financial difficulty, regardless of whether the modification loan terms include a concession. Modifications granted to borrowers experiencing financial difficulty may be in the form an interest rate reduction, payment delay, other modifications, or some combination thereof. A borrower is considered to be experiencing financial difficulty when there is significant doubt about the borrower’s ability to make required payments on the loan or to get equivalent financing from another creditor at a market rate for a similar loan. Prior to the adoption of ASU 2022-02, a TDR occurred when a loan to a borrower experiencing financial difficulty was restricted with a concession provided that a creditor would not otherwise consider. Nonperforming Loans Nonperforming loans are loans for which we do not accrue interest income and may include both commercial and consumer loans and leases, modified loans to borrowers experiencing financial difficulty, and nonaccruing TDR loans prior to the adoption of ASU 2022-02. Nonperforming loans do not include loans held for sale. Once a loan is designated nonaccrual, the interest accrued but not collected is reversed against interest income, and payments subsequently received are applied to principal until qualifying for return to accrual. Allowance for Loan and Lease Losses We estimate the ALLL using relevant available information, from internal and external sources, relating to past events, current conditions, and reasonable and supportable forecasts. The ALLL is measured on a collective (pool) basis when similar risk characteristics exist. Our portfolio segments include commercial and consumer. Each of these two segments comprises multiple loan classes. Classes are characterized by similarities in initial measurement, risk attributes, and the manner in which we monitor and assess credit risk. The commercial segment is composed of commercial and industrial, commercial real estate, and commercial lease financing loan classes. The consumer lending segment is composed of residential mortgage, home equity, consumer direct, credit card, student lending and consumer indirect loan classes. The ALLL represents our current estimate of lifetime credit losses inherent in our loan portfolio at the balance sheet date. In determining the ALLL, we estimate expected future losses for the loan's entire contractual term adjusted for expected prepayments when appropriate. The contractual term excludes expected extensions, renewals, and modifications. The ALLL is the sum of three components: (i) asset specific/ individual loan reserves; (ii) quantitative (formulaic or pooled) reserves; and (iii) qualitative (judgmental) reserves. Asset Specific / Individual Component Loans that do not share risk characteristics are evaluated on an individual basis. Loans evaluated individually are not included in the collective evaluation. We have elected to apply the practical expedient to measure expected credit losses of a collateral dependent asset using the fair value of the collateral, less any costs to sell, when foreclosure is not probable, when repayment of the loan is expected to be provided substantially through the operation or sale of the collateral, and the borrower is experiencing financial difficulty. Individual reserves are determined as follows: • For commercial non-accruing loans greater than or equal to a defined dollar threshold, individual reserves are determined based on an analysis of the present value of the loan's expected future cash flows or the fair value of the collateral less costs to sell. • For commercial non-accruing loans below the defined dollar threshold, an established LGD percentage is multiplied by the loan balance and the results are aggregated for purposes of measuring specific reserve impairment. • The population of individually assessed consumer loans includes loans deemed collateral dependent. These loans are written down based on the collateral's fair market value less costs to sell. Quantitative Component We use a non-DCF factor-based approach to estimate expected credit losses that include component PD/LGD/EAD models as well as less complex estimation methods for smaller loan portfolios. • PD: This component model is used to estimate the likelihood that a borrower will cease making payments as agreed. The major contributors to this are the borrower credit attributes and macro-economic trends. The objective of the PD model is to produce default likelihood forecasts based on the observed loan-level information and projected paths of macroeconomic variables. • LGD: This component model is used to estimate the loss on a loan once a loan is in default. • EAD: Estimates the loan balance at the time the borrower stops making payments. For all term loans, an amortization based formulaic approach is used for account level EAD estimates. We calculate EAD using a portfolio specific method in each of our revolving product portfolios. For line products that are unconditionally cancellable, the balances will either use a paydown curve or be held flat through the life of the loan. Qualitative Component The ALLL also includes identified qualitative factors related to idiosyncratic risk factors, changes in current economic conditions that may not be reflected in quantitatively derived results, and other relevant factors to ensure the ALLL reflects our best estimate of current expected credit losses. While our reserve methodologies strive to reflect all relevant risk factors, there continues to be uncertainty associated with, but not limited to, potential imprecision in the estimation process due to the inherent time lag of obtaining information and normal variations between estimates and actual outcomes. We provide additional reserves that are designed to provide coverage for losses attributable to such risks. The ALLL also includes factors that may not be directly measured in the determination of individual or collective reserves. Such qualitative factors may include: • The nature and volume of the institution’s financial assets; • The existence, growth, and effect of any concentrations of credit; • The volume and severity of past due financial assets, the volume of nonaccrual assets, and the volume and severity of adversely classified or graded assets; • The value of the underlying collateral for loans that are not collateral dependent; • The institution’s lending policies and procedures, including changes in underwriting standards and practices for collections, write-offs, and recoveries; • The quality of the institution’s credit review function; • The experience, ability, and depth of the institution’s lending, investment, collection, and other relevant management and staff; • The effect of other external factors such as the regulatory, legal and technological environments; competition; and events such as natural disasters; and • Actual and expected changes in international, national, regional, and local economic and business conditions and developments in which the institution operates that affect the collectability of financial assets. Income Taxes Deferred tax assets and liabilities are determined based on temporary differences between financial statement asset and liability amounts and their respective tax bases and are measured using enacted tax laws and rates that are expected to apply in the periods in which the deferred tax assets or liabilities are expected to be realized. Deferred tax assets are also recorded for any tax attributes, such as tax credit and net operating loss carryforwards. The net balance of deferred tax assets and liabilities is reported in “Accrued income and other assets” or “Accrued expense and other liabilities” in the consolidated balance sheets, as appropriate. Subsequent changes in the tax laws require adjustment to these assets and liabilities with the cumulative effect included in the provision for income taxes for the period in which the change is enacted. A valuation allowance is recognized for a deferred tax asset if, based on the weight of available evidence, it is more-likely-than-not that some portion or all of the deferred tax asset will not be realized. We use the proportional amortization method for LIHTC investments, whereby the associated investment tax credits are recognized as a reduction to tax expense. Certain federal tax credits that are nonrefundable and transferable under applicable regulations are accounted for as government grants and recorded as a reduction to the amortized cost or net investment in the applicable asset generating the credit, generally within “Accrued income and other assets” or “Loans, net of unearned income”. Amounts are amortized through depreciation or as an adjustment to yield over the estimated life of the asset. Any gain or loss on the transfer of a tax credit is recorded within “Other income”.

Earnings Per Common Share

Earnings Per Common Share	3 Months Ended
	Mar. 31, 2023
Earnings Per Share [Abstract]
Earnings Per Common Share	2. Earnings Per Common Share Basic earnings per share is the amount of earnings (adjusted for dividends declared on our preferred stock) available to each Common Share outstanding during the reporting periods. Diluted earnings per share is the amount of earnings available to each Common Share outstanding during the reporting periods adjusted to include the effects of potentially dilutive Common Shares. Potentially dilutive Common Shares include stock options and other stock-based awards. Potentially dilutive Common Shares are excluded from the computation of diluted earnings per share in the periods where the effect would be antidilutive. Our basic and diluted earnings per Common Share are calculated as follows: Three months ended March 31, Dollars in millions, except per share amounts 2023 2022 EARNINGS Income (loss) from continuing operations $ 311 $ 447 Less: Net income (loss) attributable to noncontrolling interests — — Income (loss) from continuing operations attributable to Key 311 447 Less: Dividends on Preferred Stock 36 27 Income (loss) from continuing operations attributable to Key common shareholders 275 420 Income (loss) from discontinued operations, net of taxes 1 1 Net income (loss) attributable to Key common shareholders $ 276 $ 421 WEIGHTED-AVERAGE COMMON SHARES Weighted-average Common Shares outstanding (000) 926,490 922,941 Effect of Common Share options and other stock awards 7,314 10,692 Weighted-average Common Shares and potential Common Shares outstanding (000) (a) 933,804 933,634 EARNINGS PER COMMON SHARE Income (loss) from continuing operations attributable to Key common shareholders $ .30 $ .45 Income (loss) from discontinued operations, net of taxes — — Net income (loss) attributable to Key common shareholders (b) .30 .46 Income (loss) from continuing operations attributable to Key common shareholders — assuming dilution $ .30 $ .45 Income (loss) from discontinued operations, net of taxes — assuming dilution — — Net income (loss) attributable to Key common shareholders — assuming dilution (b) .30 .45 (a) Assumes conversion of Common Share options and other stock awards and/or convertible preferred stock, as applicable. (b) EPS may not foot due to rounding.

Loan Portfolio

Loan Portfolio	3 Months Ended
	Mar. 31, 2023
Loans Receivables [Abstract]
Loan Portfolio	3. Loan Portfolio Loan Portfolio by Portfolio Segment and Financing Receivable (a) Dollars in millions March 31, 2023 December 31, 2022 Commercial and industrial (b) $ 60,565 $ 59,647 Commercial real estate: Commercial mortgage 16,348 16,352 Construction 2,590 2,530 Total commercial real estate loans 18,938 18,882 Commercial lease financing (c) 3,763 3,936 Total commercial loans 83,266 82,465 Residential — prime loans: Real estate — residential mortgage 21,632 21,401 Home equity loans 7,706 7,951 Total residential — prime loans 29,338 29,352 Consumer direct loans 6,359 6,508 Credit cards 969 1,026 Consumer indirect loans 39 43 Total consumer loans 36,705 36,929 Total loans (d) $ 119,971 $ 119,394 (a) Accrued interest of $487 million and $417 million at March 31, 2023, and December 31, 2022, respectively, presented in "Accrued income and other assets" on the Consolidated Balance Sheets is excluded from the amortized cost basis disclosed in this table. (b) Loan balances include $185 million and $172 million of commercial credit card balances at March 31, 2023, and December 31, 2022, respectively. (c) Commercial lease financing includes receivables held as collateral for a secured borrowing of $6 million and $8 million at March 31, 2023, and December 31, 2022, respectively. Principal reductions are based on the cash payments received from these related receivables. Additional information pertaining to this secured borrowing is included in Note 20 (“Long-Term Debt”) beginning on page 164 of our 2022 Form 10-K.

Asset Quality

Asset Quality	3 Months Ended
	Mar. 31, 2023
Credit Loss [Abstract]
Asset Quality	4. Asset Quality ALLL We estimate the appropriate level of the ALLL on at least a quarterly basis. The methodology is described in Note 1 ("Summary of Significant Accounting Policies") under the heading "Allowance for Loan and Lease Losses" beginning on page 107 of our 2022 Form 10-K. The ALLL at March 31, 2023, represents our current estimate of lifetime credit losses inherent in the loan portfolio at that date. The changes in the ALLL by loan category for the periods indicated are as follows: Three months ended March 31, 2023: Dollars in millions December 31, 2022 Provision Charge-offs Recoveries March 31, 2023 Commercial and Industrial $ 601 $ 31 $ (35) $ 8 $ 605 Commercial real estate: Real estate — commercial mortgage 203 20 (5) — 218 Real estate — construction 28 — — — 28 Total commercial real estate loans 231 20 (5) — 246 Commercial lease financing 32 (1) 1 1 33 Total commercial loans 864 50 (39) 9 884 Real estate — residential mortgage 196 15 — 1 212 Home equity loans 98 (2) (1) 1 96 Consumer direct loans 111 14 (11) 2 116 Credit cards 66 13 (9) 1 71 Consumer indirect loans 2 (2) — 1 1 Total consumer loans 473 38 (21) 6 496 Total ALLL — continuing operations 1,337 88 (a) (60) 15 1,380 Discontinued operations 21 (1) (1) — 19 Total ALLL — including discontinued operations $ 1,358 $ 87 $ (61) $ 15 $ 1,399 (a) Excludes a provision for losses on lending-related commitments of $51 million. Three months ended March 31, 2022: Dollars in millions December 31, 2021 Provision Charge-offs Recoveries March 31, 2022 Commercial and Industrial $ 445 $ 63 $ (30) $ 11 $ 489 Commercial real estate: Real estate — commercial mortgage 182 (7) (4) 1 172 Real estate — construction 29 (4) — — 25 Total commercial real estate loans 211 (11) (4) 1 197 Commercial lease financing 32 1 (2) — 31 Total commercial loans 688 53 (36) 12 717 Real estate — residential mortgage 95 12 1 — 108 Home equity loans 110 (6) (1) 1 104 Consumer direct loans 105 11 (7) 2 111 Credit cards 61 7 (7) 2 63 Consumer indirect loans 2 — (1) 1 2 Total consumer loans 373 24 (15) 6 388 Total ALLL — continuing operations 1,061 77 (a) (51) 18 1,105 Discontinued operations 28 1 (2) — 27 Total ALLL — including discontinued operations $ 1,089 $ 78 $ (53) $ 18 $ 1,132 (a) Excludes a provision for losses on lending-related commitments of $6 million. As described in Note 1 ("Summary of Significant Accounting Policies"), under the heading “Allowance for Loan and Lease Losses” beginning on page 107 of our 2022 Form 10-K, we estimate the ALLL using relevant available information, from internal and external sources, relating to past events, current economic and portfolio conditions, and reasonable and supportable forecasts. In our estimation of expected credit losses, we use a two year reasonable and supportable period across all products. Following this two year period in which supportable forecasts can be generated, for all modeled loan portfolios, we revert expected credit losses to a level that is consistent with our historical information by reverting the macroeconomic variables (model inputs) to their long run average. We revert to historical loss rates for less complex estimation methods for smaller portfolios. A 20-year fixed length look back period is used to calculate the long run average of the macroeconomic variables. A four quarter reversion period is used where the macroeconomic variables linearly revert to their long run average following the two year reasonable and supportable period. We develop our reasonable and supportable forecasts using relevant data including, but not limited to, changes in economic output, unemployment rates, property values, and other factors associated with the credit losses on financial assets. Some macroeconomic variables apply to all portfolio segments, while others are more portfolio specific. The following table discloses key macroeconomic variables for each loan portfolio. Segment Portfolio Key Macroeconomic Variables (a) Commercial Commercial and industrial BBB corporate bond rate (spread), fixed investment, business bankruptcies, GDP, industrial production, and unemployment rate, Producer Price Index Commercial real estate Property & real estate price indices, unemployment rate, business bankruptcies, GDP, SOFR Commercial lease financing BBB corporate bond rate (spread), GDP, and unemployment rate Consumer Real estate — residential mortgage GDP, home price index, unemployment rate, and 30 year mortgage rate Home equity Home price index, unemployment rate, and 30 year mortgage rate Consumer direct Unemployment rate and U.S. household income Consumer indirect Unemployment rate Credit cards Unemployment rate and U.S. household income Discontinued operations Unemployment rate (a) Variables include all transformations and interactions with other risk drivers. Additionally, variables may have varying impacts at different points in the economic cycle. In addition to macroeconomic drivers, portfolio attributes such as remaining term, outstanding balance, risk ratings, utilization, FICO, LTV, and delinquency also drive ALLL changes. Our ALLL models were designed to capture the correlation between economic and portfolio changes. As such, evaluating shifts in individual portfolio attributes and macroeconomic variables in isolation may not be indicative of past or future performance. Economic Outlook As of March 31, 2023, risk of slowing economic growth is elevated due to the inflationary pressures and stress on financial markets. Unemployment rates are still expected to remain at relatively low levels, but job growth is moderating. Inflation in the United States is starting to ease as the restrictive monetary policy and higher interest rates are making an impact. Asset prices, including residential and commercial real estate values, are expected to come under pressure. We utilized the Moody’s February 2023 Consensus forecast as our baseline forecast to estimate our expected credit losses as of March 31, 2023. We determined such forecast to be a reasonable view of the outlook for the economy given all available information at quarter end. The baseline scenario reflects slow economic growth over the next two years in markets in which we operate. U.S. GDP growth has slowed, with the annualized rate contracting 0.4% in the first quarter of 2023 and expected to grow at an annual rate of approximately 0.4% and 1.2% for 2023 and 2024, respectively. The national unemployment rate forecast is 3.4% in the first quarter of 2023 and is expected to increase through the fourth quarter of 2023 due to labor supply constraints. The U.S. Consumer Price Index (CPI) annualized rate is expected to remain below 4% over 2023. The national home price index is expected to decline approximately 9% over 2023. As a result of the current economic uncertainty, our future loss estimates may vary considerably from our March 31, 2023 assumptions. Commercial Loan Portfolio The ALLL from continu ing operations for the commercial segment increased by $20 million, or 2.3%, from December 31, 2022. The overall change in the commercial allowance is driven by changes in the economic outlook and loan growth. Changes to the economic forecast reflect lower economic growth projections in 2023 , primarily related to high inflation and increased interest rates. The reserve increase is concentrated in the commercial real estate and commercial and industrial portfolios, reflecting the economic changes and more normalized portfolio conditions. Consumer Loan Portfolio The ALLL from continuing operations for the consumer segment increased by $23 million, or 4.9%, from December 31, 2022. The overall increase in the allowance is primarily driven by economic forecast changes . Current reserve levels reflect the overall declining economic outlook quarter-over-quarter, with the most meaningful economic change being the slowing home price environment, which is contributing to higher reserve levels for the residential mortgage portfolio. Deterioration in the unemployment outlook also impacted reserves for all consumer segments . Credit Risk Profile The prevalent risk characteristic for both commercial and consumer loans is the risk of loss arising from an obligor’s inability or failure to meet contractual payment or performance terms. Evaluation of this risk is stratified and monitored by the loan risk rating grades assigned for the commercial loan portfolios and the refreshed FICO score assigned for the consumer loan portfolios. The internal risk grades assigned to loans follow our definitions of Pass and Criticized, which are consistent with published definitions of regulatory risk classifications. Loans with a pass rating represent those loans not classified on our rating scale for credits, as minimal credit risk has been identified. Criticized loans are those loans that either have a potential weakness deserving management's close attention or have a well-defined weakness that may put full collection of contractual cash flows at risk. Borrower FICO scores provide information about the credit quality of our consumer loan portfolio as they provide an indication as to the likelihood that a debtor will repay its debts. The scores are obtained from a nationally recognized consumer rating agency and are presented in the tables below at the dates indicated. All extensions of credit are subject to loan grading or scoring. Loan grades are assigned at the time of origination, verified by credit risk management, and periodically re-evaluated thereafter. This risk rating methodology blends our judgment with quantitative modeling. Commercial loans generally are assigned two internal risk ratings. The first rating reflects the probability that the borrower will default on an obligation; the second rating reflects expected recovery rates on the credit facility. Default probability is determined based on, among other factors, the financial strength of the borrower, an assessment of the borrower’s management, the borrower’s competitive position within its industry sector, and our view of industry risk in the context of the general economic outlook. Types of exposure, transaction structure, and collateral, including credit risk mitigants, affect the expected recovery assessment. Commercial Credit Exposure Credit Risk Profile by Creditworthiness Category and Vintage (a) As of March 31, 2023 Term Loans Revolving Loans Amortized Cost Basis Revolving Loans Converted to Term Loans Amortized Cost Basis Amortized Cost Basis by Origination Year and Internal Risk Rating Dollars in millions 2023 2022 2021 2020 2019 Prior Total Commercial and Industrial Risk Rating: Pass $ 1,605 $ 11,348 $ 7,729 $ 3,365 $ 2,544 $ 4,593 $ 26,824 $ 165 $ 58,173 Criticized (Accruing) 24 106 416 143 152 407 951 23 2,222 Criticized (Nonaccruing) 4 34 3 6 3 33 87 — 170 Total commercial and industrial 1,633 11,488 8,148 3,514 2,699 5,033 27,862 188 60,565 Current period gross write-offs 1 1 4 1 — 11 17 — 35 Real estate — commercial mortgage Risk Rating: Pass 445 4,602 3,663 959 1,776 3,218 1,087 88 15,838 Criticized (Accruing) — 16 63 45 85 209 33 — 451 Criticized (Nonaccruing) — — — 1 1 26 31 — 59 Total real estate — commercial mortgage 445 4,618 3,726 1,005 1,862 3,453 1,151 88 16,348 Current period gross write-offs — — — — — 3 2 — 5 Real estate — construction Risk Rating: Pass 13 774 947 376 231 114 11 6 2,472 Criticized (Accruing) — 5 — 17 43 51 — 2 118 Criticized (Nonaccruing) — — — — — — — — — Total real estate — construction 13 779 947 393 274 165 11 8 2,590 Current period gross write-offs — — — — — — — — — Commercial lease financing Risk Rating: Pass 131 982 690 470 427 1,000 — — 3,700 Criticized (Accruing) — 23 5 10 10 14 — — 62 Criticized (Nonaccruing) — — — — — 1 — — 1 Total commercial lease financing 131 1,005 695 480 437 1,015 — 3,763 Current period gross write-offs — — — — — (1) — — (1) Total commercial loans $ 2,222 $ 17,890 $ 13,516 $ 5,392 $ 5,272 $ 9,666 $ 29,024 $ 284 $ 83,266 Total commercial loan current period gross write-offs $ 1 $ 1 $ 4 $ 1 $ — $ 13 $ 19 $ — $ 39 As of December 31, 2022 Term Loans Revolving Loans Amortized Cost Basis Revolving Loans Converted to Term Loans Amortized Cost Basis Amortized Cost Basis by Origination Year and Internal Risk Rating Dollars in millions 2022 2021 2020 2019 2018 Prior Total Commercial and Industrial Risk Rating: Pass $ 11,580 $ 8,636 $ 3,540 $ 2,839 $ 1,787 $ 3,307 $ 25,565 $ 138 $ 57,392 Criticized (Accruing) 40 357 131 160 227 205 936 25 2,081 Criticized (Nonaccruing) 34 2 5 4 22 20 87 — 174 Total commercial and industrial 11,654 8,995 3,676 3,003 2,036 3,532 26,588 163 59,647 Real estate — commercial mortgage Risk Rating: Pass 4,786 3,817 992 1,853 788 2,578 1,068 67 15,949 Criticized (Accruing) 6 13 20 48 73 175 47 — 382 Criticized (Nonaccruing) — — 1 1 1 15 3 — 21 Total real estate — commercial mortgage 4,792 3,830 1,013 1,902 862 2,768 1,118 67 16,352 Real estate — construction Risk Rating: Pass 698 895 445 262 107 48 1 — 2,456 Criticized (Accruing) 5 1 5 32 25 4 — 2 74 Criticized (Nonaccruing) — — — — — — — — — Total real estate — construction 703 896 450 294 132 52 1 2 2,530 Commercial lease financing Risk Rating: Pass 1,039 743 509 467 174 947 — — 3,879 Criticized (Accruing) 15 1 9 12 9 10 — — 56 Criticized (Nonaccruing) — — — — — 1 — — 1 Total commercial lease financing 1,054 744 518 479 183 958 — — 3,936 Total commercial loans $ 18,203 $ 14,465 $ 5,657 $ 5,678 $ 3,213 $ 7,310 $ 27,707 $ 232 $ 82,465 (a) Accrued intere st of $353 million a nd $314 million as of March 31, 2023, and December 31, 2022, respectively, presented in Other Assets on the Consolidated Balance Sheets, was excluded from the amortized cost basis disclosed in these tables. Consumer Credit Exposure Credit Risk Profile by FICO Score and Vintage (a) As of March 31, 2023 Term Loans Revolving Loans Amortized Cost Basis Revolving Loans Converted to Term Loans Amortized Cost Basis Amortized Cost Basis by Origination Year and FICO Score Dollars in millions 2023 2022 2021 2020 2019 Prior Total Real estate — residential mortgage FICO Score: 750 and above $ 332 $ 5,412 $ 8,654 $ 2,546 $ 614 $ 1,015 $ — $ — $ 18,573 660 to 749 114 1,031 895 277 110 272 — — 2,699 Less than 660 5 51 37 17 18 143 — — 271 No Score — 63 1 1 — 23 1 — 89 Total real estate — residential mortgage 451 6,557 9,587 2,841 742 1,453 1 — 21,632 Current period gross write-offs — — — — — — — — — Home equity loans FICO Score: 750 and above — 128 1,251 628 172 578 2,150 387 5,294 660 to 749 5 76 276 186 77 206 948 127 1,901 Less than 660 — 11 30 27 17 90 294 34 503 No Score 1 — — — — 2 5 — 8 Total home equity loans 6 215 1,557 841 266 876 3,397 548 7,706 Current period gross write-offs — — — — — — — — — Consumer direct loans FICO Score: 750 and above 81 1,296 1,600 780 332 133 96 — 4,318 660 to 749 71 449 391 201 106 60 196 — 1,474 Less than 660 6 64 60 31 20 14 57 — 252 No Score 21 50 27 17 11 26 163 — 315 Total consumer direct loans 179 1,859 2,078 1,029 469 233 512 — 6,359 Current period gross write-offs — 2 2 2 2 1 3 — 12 Credit cards FICO Score: 750 and above — — — — — — 478 — 478 660 to 749 — — — — — — 395 — 395 Less than 660 — — — — — — 95 — 95 No Score — — — — — — 1 — 1 Total credit cards — — — — — — 969 — 969 Current period gross write-offs — — — — — — 9 — 9 Consumer indirect loans FICO Score: 750 and above — — 1 — — 19 — — 20 660 to 749 — — — — — 14 — — 14 Less than 660 — — — — — 5 — — 5 No Score — — — — — — — — — Total consumer indirect loans — — 1 — — 38 — — 39 Current period gross write-offs — — — — — — — — — Total consumer loans $ 636 $ 8,631 $ 13,223 $ 4,711 $ 1,477 $ 2,600 $ 4,879 $ 548 $ 36,705 Total consumer loan current period gross write-offs $ — $ 2 $ 2 $ 2 $ 2 $ 1 $ 12 $ — $ 21 As of December 31, 2022 Term Loans Revolving Loans Amortized Cost Basis Revolving Loans Converted to Term Loans Amortized Cost Basis Amortized Cost Basis by Origination Year and FICO Score Dollars in millions 2022 2021 2020 2019 2018 Prior Total Real estate — residential mortgage FICO Score: 750 and above $ 5,205 $ 8,702 $ 2,584 $ 636 $ 64 $ 978 $ — $ — $ 18,169 660 to 749 1,286 919 282 106 28 260 — — 2,881 Less than 660 41 42 17 14 15 130 — — 259 No Score 62 1 1 1 1 25 1 — 92 Total real estate — residential mortgage 6,594 9,664 2,884 757 108 1,393 1 — 21,401 Home equity loans FICO Score: 750 and above 146 1,044 736 207 74 617 2,238 398 5,460 660 to 749 83 291 194 79 32 187 974 126 1,966 Less than 660 11 31 25 17 10 81 300 37 512 No Score 7 — — — — 2 4 — 13 Total home equity loans 247 1,366 955 303 116 887 3,516 561 7,951 Consumer direct loans FICO Score: 750 and above 1,291 1,632 811 351 45 97 102 — 4,329 660 to 749 526 434 229 120 26 41 206 — 1,582 Less than 660 58 63 32 23 7 9 57 — 249 No Score 59 32 22 11 9 22 193 — 348 Total consumer direct loans 1,934 2,161 1,094 505 87 169 558 — 6,508 Credit cards FICO Score: 750 and above — — — — — — 524 — 524 660 to 749 — — — — — — 402 — 402 Less than 660 — — — — — — 99 — 99 No Score — — — — — — 1 — 1 Total credit cards — — — — — — 1,026 — 1,026 Consumer indirect loans FICO Score: 750 and above — 2 — — — 19 — — 21 660 to 749 — — — — — 15 — — 15 Less than 660 — — — — — 7 — — 7 No Score — — — — — — — — — Total consumer indirect loans — 2 — — — 41 — — 43 Total consumer loans $ 8,775 $ 13,193 $ 4,933 $ 1,565 $ 311 $ 2,490 $ 5,101 $ 561 $ 36,929 (a) Accrued intere st of $134 million and $103 million as of March 31, 2023, and December 31, 2022, respectively, presented in Other Assets on the Consolidated Balance Sheets, was excluded from the amortized cost basis disclosed in this table. Nonperforming and Past Due Loans Our policies for determining past due loans, placing loans on nonaccrual, applying payments on nonaccrual loans, and resuming accrual of interest for our commercial and consumer loan portfolios are disclosed in Note 1 (“Summary of Significant Accounting Policies”) under the heading “Nonperforming Loans” beginning on page 106 of our 2022 Form 10-K. The following aging analysis of past due and current loans as of March 31, 2023, and December 31, 2022, provides further information regarding Key’s credit exposure. Aging Analysis of Loan Portfolio (a) As of March 31, 2023 Current (b) 30-59 Days Past Due (b) 60-89 Days Past Due (b) 90 and Greater Days Past Due (b) Non-performing Total Past Due and Non-performing Loans (b) Total Loans (c) Dollars in millions LOAN TYPE Commercial and industrial $ 60,299 $ 29 $ 44 $ 23 $ 170 $ 266 $ 60,565 Commercial real estate: Commercial mortgage 16,265 13 4 7 59 83 16,348 Construction 2,590 — — — — — 2,590 Total commercial real estate loans 18,855 13 4 7 59 83 18,938 Commercial lease financing 3,755 1 4 2 1 8 3,763 Total commercial loans $ 82,909 $ 43 $ 52 $ 32 $ 230 $ 357 $ 83,266 Real estate — residential mortgage $ 21,548 $ 5 $ 2 $ 2 $ 75 $ 84 $ 21,632 Home equity loans 7,565 24 7 6 104 141 7,706 Consumer direct loans 6,329 13 7 7 3 30 6,359 Credit cards 948 6 4 8 3 21 969 Consumer indirect loans 37 1 — — 1 2 39 Total consumer loans $ 36,427 $ 49 $ 20 $ 23 $ 186 $ 278 $ 36,705 Total loans $ 119,336 $ 92 $ 72 $ 55 $ 416 $ 635 $ 119,971 (a) Amounts in table represent amortized cost and exclude loans held for sale. (b) Accrued inter est of $487 million p resented in “Accrued income and other assets” on the Consolidated Balance Sheets is excluded from the amortized cost basis disclosed in this table. (c) Net of unearned income, net of deferred fees and costs, and unamortized discounts and premiums. As of December 31, 2022 Current (b) 30-59 Days Past Due (b) 60-89 Days Past Due (b) 90 and Greater Days Past Due (b) Non-performing Loans Total Past Due and Non-performing Loans (b) Total Loans (c) Dollars in millions LOAN TYPE Commercial and industrial $ 59,366 $ 43 $ 33 $ 31 $ 174 $ 281 $ 59,647 Commercial real estate: Commercial mortgage 16,305 16 2 8 21 47 16,352 Construction 2,530 — — — — — 2,530 Total commercial real estate loans 18,835 16 2 8 21 47 18,882 Commercial lease financing 3,928 3 1 3 1 8 3,936 Total commercial loans $ 82,129 $ 62 $ 36 $ 42 $ 196 $ 336 $ 82,465 Real estate — residential mortgage $ 21,307 $ 13 $ 3 $ 1 $ 77 $ 94 $ 21,401 Home equity loans 7,804 27 8 5 107 147 7,951 Consumer direct loans 6,478 15 7 5 3 30 6,508 Credit cards 1,007 5 4 7 3 19 1,026 Consumer indirect loans 42 — — — 1 1 43 Total consumer loans $ 36,638 $ 60 $ 22 $ 18 $ 191 $ 291 $ 36,929 Total loans $ 118,767 $ 122 $ 58 $ 60 $ 387 $ 627 $ 119,394 (a) Amounts in table represent amortized cost and exclude loans held for sale. (b) Accrued interest of $417 million presented in “Accrued income and other assets” on the Consolidated Balance Sheets is excluded from the amortized cost basis disclosed in this table. (c) Net of unearned income, net of deferred fees and costs, and unamortized discounts and premiums. At March 31, 2023, the approximate carrying amount of our commercial nonperforming loans outstanding represented 59% of their original contractual amount owed, total nonperforming loans outstanding represented 70% of their original contractual amount owed, and nonperforming assets in total were carried at 78% of their original contractual amount owed. Nonperforming loans reduced expected interest income by $8 million for the three months ended March 31, 2023, an d $5 million for the three months ended March 31, 2022. The amortized cost basis of nonperforming loans on nonaccrual status for which there is no related allowance for credit losses was $220 million at March 31, 2023. Collateral-dependent Financial Assets We classify financial assets as collateral-dependent when our borrower is experiencing financial difficulty, and we expect repayment to be provided substantially through the operation or sale of the collateral. Our commercial loans have collateral that includes cash, accounts receivable, inventory, commercial machinery, commercial properties, commercial real estate construction projects, enterprise value, and stock or ownership interests in the borrowing entity. When appropriate we also consider the enterprise value of the borrower as a repayment source for collateral-dependent loans. Our consumer loans have collateral that includes residential real estate, automobiles, boats, and RVs. There were no significant changes in the extent to which collateral secures our collateral-dependent financial assets during the three months ended March 31, 2023 . Loan Modifications Made to Borrowers Experiencing Financial Difficulty Effective January 1, 2023 the Bank adopted the provision of ASU 2022-02, which eliminated the accounting for TDRs while expanding loan modification and vintage disclosure requirements. As part of our loss mitigation activities, we may agree to modify the contractual terms of a loan to a borrower experiencing financial difficulty. Our loan modifications are handled on a case-by-case basis and are negotiated to achieve mutually agreeable terms that maximize loan collectability and meet the borrower’s financial needs. Such modifications may include an extension of maturity date, interest rate reduction, an other than insignificant payment delay, other modifications, or some combination thereof. Many factors can go into what is considered an other than insignificant payment delay such as the significance of the restricted payment amount relative to the normal loan payment or the relative significance of the delay to the original loan terms. Generally, the Bank considers any delay in payment of greater than 90 days in the last 12 months to be significant. The ALLL for loans modified for borrowers experiencing financial difficulty is determined based on Key’s ALLL policy as described within Note 1 (“Basis of Presentation and Accounting Policies”). Modifications for Borrowers Experiencing Financial Difficulty The Bank’s strategy in working with commercial borrowers is to allow them time to improve their financial position through loan modification. Commercial borrowers that are rated substandard or worse in accordance with the regulatory definition, or that cannot otherwise restructure at market terms and conditions, are considered to be experiencing financial difficulty. A modification of a loan is subject to the normal underwriting standards and processes for other similar credit extensions, both new and existing. The modified loan is evaluated to determine if it is a new loan or a continuation of the prior loan. Consumer loans in which a borrower requires a modification as a result of negative changes to their financial condition or to avoid default, generally indicate the borrower is experiencing financial difficulty. The primary modifications made to consumer loans are amortization, maturity date and interest rate changes. Consumer borrowers identified as experiencing financial difficulty are generally unable to refinance their loans through the Company’s normal origination channel or through other independent sources. The following table shows the amortized cost basis at the end of the reporting period of the loans modified to borrowers experiencing financial difficult, disaggregated by class of loan and type of concession granted. The table does not include those modifications that only resulted in an insignificant payment delay. The table does not include consumer loans that are still within a trial modification period. Trial modifications may be done for consumer borrowers where a trial payment plan period is offered in advance of a permanent loan modification. As of March 31, 2023, there were 136 loans totaling $17 million in a trial modification period. Commitments outstanding to lend additional funds to borrowers experiencing financial difficulty whose loans were modified were $23 million at March 31, 2023. As of March 31, 2023 Interest Rate Reduction Term Extension Other Combination Total Dollars in millions Amortized Cost Basis Amortized Cost Basis Amortized Cost Basis Amortized Cost Basis Amortized Cost Basis % of Total Loan Type LOAN TYPE Commercial and Industrial $ — $ 79 $ 1 $ 4 $ 84 0.14 % Commercial real estate: Commercial mortgage — 4 — — 4 0.02 Construction — — — — — — Total commercial real estate loans — 4 — — 4 0.02 Commercial lease financing — — — — — — Total commercial loans $ — $ 83 $ 1 $ 4 $ 88 0.11 % Real estate — residential mortgage — — — 1 1 — Home equity loans — — — 2 2 0.03 Consumer direct loans — — — 1 1 0.02 Credit cards — — — 1 1 0.10 Consumer indirect loans — — — — — — Total consumer loans — — — 5 5 0.01 Total loans $ — $ 83 $ 1 $ 9 $ 93 0.08 % Financial Effects of Modifications to Borrowers Experiencing Financial Difficulty The following table summarizes the financial impacts of loan modifications made to specific loans during the three months ended March 31, 2023. Three months ended March 31, 2023 Weighted-average Interest Rate Reduction Weighted-average Term Extension (in years) LOAN TYPE Commercial and Industrial — % 1.03 Commercial mortgage — % 1.42 Real estate — residential mortgage 1.33 % 6.68 Home equity loans 3.72 % 2.90 Amortized Cost Basis of Modified Loans That Subsequently Defaulted As of March 31, 2023, there were $4 million of Commercial and Industrial loans that were modified for borrowers experiencing financial difficulty that received combination modifications and subsequently defaulted during the period. Key closely monitors the performance of loans that are modified to borrowers experiencing financial difficulty to understand the effectiveness of its modification efforts. The following table depicts the performance of loans that have been modified for borrowers experiencing financial difficulty since the adoption of ASU 2022-02 on January 1, 2023. As of March 31, 2023 Current 30-89 90 and Total Dollars in millions LOAN TYPE Commercial and Industrial $ 80 $ 3 $ 1 $ 84 Commercial real estate Commercial mortgage 4 — — 4 Construction — — — — Total commercial real estate loans 84 3 1 88 Commercial lease financing — — — — Total commercial loans 84 3 1 88 Real estate — residential mortgage 1 — — 1 Home equity loans 2 — — 2 Consumer direct loans 1 — — 1 Credit cards 1 — — 1 Consumer indirect loans — — — — Total consumer loans $ 5 $ — $ — $ 5 Total loans $ 89 $ 3 $ 1 $ 93 Liability for Credit Losses on Off Balance Sheet Exposures The liability for credit losses on off balance sheet exposure is included in “accrued expense and other liabilities” on the balance sheet. This includes credit risk for recourse associated with loans sold under the Fannie Mae Delegated Underwriting and Servicing program and credit losses inherent in unfunded lending-related commitments, such as letters of credit and unfunded loan commitments, and certain financial guarantees. Changes in the liability for credit losses on off balance sheet exposures are summarized as follows: Three months ended March 31, Dollars in millions 2023 2022 Balance at beginning of period $ 225 $ 160 Provision (credit) for losses on off balance sheet exposures 51 6 Balance at end of period $ 276 $ 166 TDR Disclosures Prior to the Adoption of ASU 2022-02 Prior to our adoption of ASU 2022-02, we accounted for a modification to the contractual terms of a loan that resulted in granting a concession to a borrower experiencing financial difficulties as a TDR. On January 1, 2023, we adopted ASU 2022-02, which eliminated TDR accounting prospectively for all modifications occurring on or after January 1, 2023. See Note 1 (“Summary of Significant Accounting Policies”) in our 2022 Form 10-K for more information on TDR accounting and disclosure requirements and Note 1 (“Summary of Significant Accounting Policies”) under the heading “Basis of Presentation” in this report for more information on our adoption of ASU 2022-02. Commitments outstanding to lend additional funds to borrowers whose loan terms have been modified in TDRs were $1 million at March 31, 2022. The consumer TDR other concession category in the table below primarily includes those borrowers’ debts that are discharged through Chapter 7 bankruptcy and have not been formally re-affirmed. At March 31, 2022, the recorded investment of consumer residential mortgage loans in the process of foreclosure was approximately $126 million. The following table shows the post-modification outstanding recorded investment by concession type for our commercial and consumer accruing and nonaccruing TDRs that occurred during the period indicated: Three Months Ended March 31, Dollars in millions 2022 Commercial loans: Extension of Maturity Date $ — Payment or Covenant Modification/Deferment 1 Bankruptcy Plan Modification — Increase in new commitment or new money — Total $ 1 Consumer loans: Interest rate reduction $ 1 Other 9 Total $ 10 Total TDRs $ 11 The following table summarizes the change in the post-modification outstanding recorded investment of our accruing and nonaccruing TDRs during the period indicated: Three Months Ended March 31, Dollars in millions 2022 Balance at beginning of the period $ 220 Additions 11 Payments (12) Charge-offs — Balance at end of period $ 219 A further breakdown of TDRs included in nonperforming loans by loan category for the period indicated are as follows: December 31, 2022 Number of Loans Pre-modification Outstanding Recorded Investment Post-modification Outstanding Recorded Investment Dollars in millions LOAN TYPE Nonperforming: Commercial and industrial 27 $ 60 $ 45 Commercial real estate: Commercial mortgage 4 50 13 Total commercial real estate loans 4 50 13 Total commercial loans 31 110 58 Real estate — residential mortgage 238 30 27 Home equity loans 468 32 28 Consumer direct loans 156 2 2 Credit cards 331 2 2 Consumer indirect loans 16 2 1 Total consumer loans 1,209 68 60 Total nonperforming TDRs 1,240 178 118 Prior-year accruing: (a) Commercial and industrial 19 — — Commercial real estate Commercial mortgage — — — Total commercial real estate loans — — — Total commercial loans 19 — — Real estate — residential mortgage 425 41 35 Home equity loans 1,547 96 73 Consumer direct loans 272 4 3 Credit cards 607 4 2 Consumer indirect loans 95 11 5 Total consumer loans 2,946 156 118 Total prior-year accruing TDRs 2,965 156 118 Total TDRs 4,205 $ 334 $ 236 (a) All TDRs that were restructured prior to January 1, 2022 are fully accruing.

Fair Value Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2023
Fair Value Disclosures [Abstract]
Fair Value Measurements	5. Fair Value Measurements In accordance with GAAP, Key measures certain assets and liabilities at fair value. Fair value is defined as the price to sell an asset or transfer a liability in an orderly transaction between market participants in our principal market. Additional information regarding our accounting policies for determining fair value is provided in Note 6 (“Fair Value Measurements”) and Note 1 (“Summary of Significant Accounting Policies”) under the heading “Fair Value Measurements” of our 2022 Form 10-K. Assets and Liabilities Measured at Fair Value on a Recurring Basis Certain assets and liabilities are measured at fair value on a recurring basis in accordance with GAAP. For more information on the valuation techniques used to measure classes of assets and liabilities reported at fair value on a recurring basis as well as the classification of each in the valuation hierarchy, refer to Note 6 (“Fair Value Measurements” in our 2022 Form 10-K. The following tables present these assets and liabilities at March 31, 2023, and December 31, 2022. March 31, 2023 December 31, 2022 Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Dollars in millions ASSETS MEASURED ON A RECURRING BASIS Trading account assets: U.S. Treasury, agencies and corporations $ — $ 926 $ — $ 926 $ — $ 698 $ — $ 698 States and political subdivisions — 36 — 36 — 33 — 33 Other mortgage-backed securities — 152 — 152 — 84 — 84 Other securities — 3 — 3 — — — — Total trading account securities — 1,117 — 1,117 — 815 — 815 Commercial loans — 1 — 1 — 14 — 14 Total trading account assets — 1,118 — 1,118 — 829 — 829 Securities available for sale: U.S. Treasury, agencies and corporations — 9,514 — 9,514 — 9,415 — 9,415 States and political subdivisions — — — — — — — — Agency residential collateralized mortgage obligations — 16,425 — 16,425 — 16,433 — 16,433 Agency residential mortgage-backed securities — 3,900 — 3,900 — 3,920 — 3,920 Agency commercial mortgage-backed securities — 9,659 — 9,659 — 9,349 — 9,349 Other securities — — — — — — — — Total securities available for sale $ — $ 39,498 $ — $ 39,498 $ — $ 39,117 $ — $ 39,117 Other investments: Principal investments: Direct $ — $ — $ 1 $ 1 $ — $ — $ 1 $ 1 Indirect (measured at NAV) (a) — — — 20 — — — 34 Total principal investments — — 1 21 — — 1 35 Equity investments: Direct 3 — 2 5 4 — 2 6 Direct (measured at NAV) (a) — — — 31 — — — 32 Indirect (measured at NAV) (a) — — — 4 — — — 4 Total equity investments 3 — 2 40 4 — 2 42 Total other investments 3 — 3 61 4 — 3 77 Loans, net of unearned income (residential) — — 9 9 — — 9 9 Loans held for sale (residential) — 45 — 45 — 24 — 24 Derivative assets: Interest rate — 228 13 241 — 301 2 303 Foreign exchange 113 18 — 131 112 23 — 136 Commodity — 986 — 986 — 1,328 — 1,328 Credit — — 1 1 — — 1 1 Other — 15 1 16 — 13 — 13 Derivative assets 113 1,247 15 1,375 112 1,666 3 1,781 Netting adjustments (b) — — — (978) — — — (757) Total derivative assets 113 1,247 15 397 112 1,666 3 1,024 Total assets on a recurring basis at fair value $ 116 $ 41,908 $ 27 $ 41,128 $ 116 $ 41,636 $ 15 $ 41,080 LIABILITIES MEASURED ON A RECURRING BASIS Bank notes and other short-term borrowings: Short positions $ 58 $ 753 $ — $ 811 $ 126 $ 509 $ — $ 635 Derivative liabilities: Interest rate — 1,057 — 1,057 — 1,307 — 1,307 Foreign exchange 95 18 — 113 107 24 — 131 Commodity — 962 — 962 — 1,304 — 1,304 Credit — 1 2 3 — — 3 3 Other — 9 — 9 — 5 — 5 Derivative liabilities 95 2,047 2 2,144 107 2,640 3 2,750 Netting adjustments (b) — — — (850) — — — (1,262) Total derivative liabilities 95 2,047 2 1,294 107 2,640 3 1,488 Total liabilities on a recurring basis at fair value $ 153 $ 2,800 $ 2 $ 2,105 $ 233 $ 3,149 $ 3 $ 2,123 (a) Certain investments that are measured at fair value using the net asset value per share (or its equivalent) practical expedient have not been classified in the fair value hierarchy. The fair value amounts presented in this table are intended to permit reconciliation of the fair value hierarchy to the amounts presented in the consolidated balance sheet. (b) Netting adjustments represent the amounts recorded to convert our derivative assets and liabilities from a gross basis to a net basis in accordance with the applicable accounting guidance. The net basis takes into account the impact of bilateral collateral and master netting agreements that allow us to settle all derivative contracts with a single counterparty on a net basis and to offset the net derivative position with the related cash collateral. Total derivative assets and liabilities include these netting adjustments. The following table presents the fair value of our direct and indirect principal investments and related unfunded commitments at March 31, 2023, as well as financial support provided for the three months ended March 31, 2023, and March 31, 2022. Financial support provided Three months ended March 31, March 31, 2023 2023 2022 Dollars in millions Fair Value Unfunded Funded Funded Other Funded Funded Other INVESTMENT TYPE Direct investments $ 1 $ — $ — $ — $ — $ — Indirect investments (measured at NAV) (a) 20 3 — — — — Total $ 21 $ 3 $ — $ — $ — $ — (a) Our indirect investments consist of buyout funds, venture capital funds, and fund of funds. These investments are generally not redeemable. Instead, distributions are received through the liquidation of the underlying investments of the fund. An investment in any one of these funds typically can be sold only with the approval of the fund’s general partners. At March 31, 2023, no significant liquidation of the underlying investments has been communicated to Key. The purpose of funding our capital commitments to these investments is to allow the funds to make additional follow-on investments and pay fund expenses until the fund dissolves. We, and all other investors in the fund, are obligated to fund the full amount of our respective capital commitments to the fund based on our and their respective ownership percentages, as noted in the applicable Limited Partnership Agreement. Changes in Level 3 Fair Value Measurements The following table shows the components of the change in the fair values of our Level 3 financial instruments measured at fair value on a recurring basis for the three months ended March 31, 2023, and March 31, 2022. Dollars in millions Beginning of Period Balance Gains (Losses) Included in Other Comprehensive Income Gains (Losses) Included in Earnings Purchases Sales Settlements Transfers Other Transfers into Level 3 Transfers out of Level 3 End of Period Balance Unrealized Gains (Losses) Included in Earnings Three months ended March 31, 2023 Other investments Principal investments Direct (a) $ 1 $ — $ — $ — $ — $ — $ — $ — $ — $ 1 $ — Other indirect — — — — — — — — — — — Equity investments Direct (a) 2 — — — — — — — — 2 — Loans, net of unearned income (residential) 9 — — — — — — — — 9 — Derivative instruments (b) Interest rate 2 — 6 (c) 18 (1) — — (8) (d) (4) (d) 13 — Credit (2) — 1 (c) — — — — — — (1) — Other (e) — — — (c) — — — 1 — — 1 — Dollars in millions Beginning of Period Balance Gains (Losses) Included in Other Comprehensive Income Gains (Losses) Included in Earnings Purchases Sales Settlements Transfers Other Transfers into Level 3 Transfers out of Level 3 End of Period Balance Unrealized Gains (Losses) Included in Earnings Three months ended March 31, 2022 Other investments Principal investments Direct (a) $ 1 $ — $ — $ — $ — $ — $ — $ — $ — $ 1 $ — Equity investments Direct (a) 9 (2) — — — — — — 7 (2) Loans, net of unearned income (residential) 11 — — — — — — — — 11 — Derivative instruments (b) Interest rate 33 — (11) (c) 1 — 29 (d) (9) (d) 43 — Credit (6) — 1 (c) — — — — — — (5) — Other (e) 5 — — (c) — — (7) — — (2) — (a) Realized and unrealized gains and losses on principal investments and other equity investments are reported in “other income” on the income statement. (b) Amounts represent Level 3 derivative assets less Level 3 derivative liabilities. (c) Realized and unrealized gains and losses on derivative instruments are reported in “corporate services income” and “other income” on the income statement. (d) Certain instruments previously classified as Level 2 were transferred to Level 3 because Level 3 unobservable inputs became significant. Certain derivatives previously classified as Level 3 were transferred to Level 2 because Level 3 unobservable inputs became less significant. (e) Amounts represent Level 3 interest rate lock commitments. Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis Certain assets and liabilities are measured at fair value on a nonrecurring basis in accordance with GAAP. The adjustments to fair value generally result from the application of accounting guidance that requires assets and liabilities to be recorded at the lower of cost or fair value, or assessed for impairment. For more information on the valuation techniques used to measure classes of assets and liabilities measured at fair value on a nonrecurring basis, refer to Note 6 (“Fair Value Measurements”) in our 2022 Form 10-K. There were no liabilities measured at fair value on a nonrecurring basis at March 31, 2023, and December 31, 2022. The following table presents our assets measured at fair value on a nonrecurring basis at March 31, 2023, and December 31, 2022: March 31, 2023 December 31, 2022 Dollars in millions Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total ASSETS MEASURED ON A NONRECURRING BASIS Collateral-dependent loans $ — $ — $ 60 $ 60 $ — $ — $ 17 $ 17 Accrued income and other assets — — 72 72 — — 14 14 Total assets on a nonrecurring basis at fair value $ — $ — $ 132 $ 132 $ — $ — $ 31 $ 31 We have other investments in equity securities that do not have readily determinable fair values and do not qualify for the practical expedient to measure the investment using a net asset value per share. We have elected to measure these securities at cost less impairment plus or minus adjustments due to observable orderly transactions. Impairment is recorded when there is evidence that the expected fair value of the investment has declined to below the recorded cost. At each reporting period, we assess if these investments continue to qualify for this measurement alternative. At March 31, 2023, and December 31, 2022, the carrying amount of equity investments under this method was $256 million and $249 million, respectively. No impairment was recorded for the three months ended March 31, 2023. Quantitative Information about Level 3 Fair Value Measurements The range and weighted-average of the significant unobservable inputs used to fair value our material Level 3 recurring and nonrecurring assets at March 31, 2023, and December 31, 2022, along with the valuation techniques used, are shown in the following table: Level 3 Asset (Liability) Valuation Technique Significant Unobservable Input Range (Weighted-Average) (a), (b) Dollars in millions March 31, 2023 December 31, 2022 March 31, 2023 December 31, 2022 Recurring Loans, net of unearned income (residential) $ 9 $ 9 Market comparable pricing Comparability factor 61.72 - 87.23% (72.34%) 61.00-86.58% (72.21%) Derivative instruments: Interest rate 13 2 Discounted cash flows Probability of default .02 - 100% (6.80%) .02 - 100% (8.00%) Loss given default 0 - 1 (.495) 0 - 1 (.492) Insignificant level 3 assets, net of liabilities (c) 3 1 Nonrecurring Collateral-dependent loans 60 17 Fair value of collateral Discount rate 0 - 10.00% (4.00%) 0 - 85.00% (34.00%) Accrued income and other assets: OREO and other Level 3 assets (d) 72 14 Appraised value Appraised value N/M N/M (a) The weighted average of significant unobservable inputs is calculated using a weighting relative to fair value. (b) For significant unobservable inputs with no range, a single figure is reported to denote the single quantitative factor used. (c) Represents the aggregate amount of Level 3 assets and liabilities measured at fair value on a recurring basis that are individually and in the aggregate insignificant. The amount includes certain equity investments and certain financial derivative assets and liabilities. (d) Excludes amounts pertaining to mortgage servicing assets. No mortgage servicing assets required nonrecurring valuation adjustments as of March 31, 2023, and December 31, 2022. Refer to Note 8 (“Mortgage Servicing Assets”) for significant unobservable inputs pertaining to these assets. Fair Value Disclosures of Financial Instruments The Levels in the fair value hierarchy ascribed to our financial instruments and the related carrying amounts at March 31, 2023, and December 31, 2022, are shown in the following tables. Assets and liabilities are further arranged by measurement category. March 31, 2023 Fair Value Dollars in millions Carrying Amount Level 1 Level 2 Level 3 Measured at NAV Netting Adjustment Total ASSETS (by measurement category) Fair value - net income Trading account assets (b) $ 1,118 $ — $ 1,118 $ — $ — $ — $ 1,118 Other investments (b) 1,587 3 — 1,530 54 — 1,587 Loans, net of unearned income (residential) (d) 9 — — 9 — — 9 Loans held for sale (residential) (b) 45 — 45 — — — 45 Derivative assets - trading (b) 382 113 1,193 15 — (939) (f) 382 Fair value - OCI Securities available for sale (b) 39,498 — 39,498 — — — 39,498 Derivative assets - hedging (b)(g) 15 — 54 — — (39) (f) 15 Amortized cost Held-to-maturity securities (c) 9,561 — 9,085 — — — 9,085 Loans, net of unearned income (d) 118,582 — — 112,964 — — 112,964 Loans held for sale (b) 1,166 — — 1,166 — — 1,166 Other Cash and other short-term investments (a) 9,194 9,194 — — — — 9,194 LIABILITIES (by measurement category) Fair value - net income Derivative liabilities - trading (b) $ 1,332 $ 95 $ 2,070 $ 2 $ — $ (835) (f) $ 1,332 Fair value - OCI Derivative liabilities - hedging (b)(g) (38) — (23) — — (15) (f) (38) Amortized cost Time deposits (e) 13,838 — 13,898 — — — 13,898 Short-term borrowings (a) 11,435 58 11,377 — — — 11,435 Long-term debt (e) 22,753 12,195 9,696 — — — 21,891 Other Deposits with no stated maturity (a) 130,310 — 130,310 — — — 130,310 December 31, 2022 Fair Value Dollars in millions Carrying Amount Level 1 Level 2 Level 3 Measured at NAV Netting Adjustment Total ASSETS (by measurement category) Fair value - net income Trading account assets (b) $ 829 $ — $ 829 $ — $ — $ — $ 829 Other investments (b) 1,308 4 — 1,234 70 — 1,308 Loans, net of unearned income (residential) (d) 9 — — 9 — — 9 Loans held for sale (residential) (b) 24 — 24 — — — 24 Derivative assets - trading (b) 927 $ 112 1,552 3 — (740) (f) 927 Fair value - OCI Securities available for sale (b) 39,117 — 39,117 — — — 39,117 Derivative assets - hedging (b)(g) 97 — 114 — — (17) (f) 97 Amortized cost Held-to-maturity securities (c) 8,710 — 8,113 — — — 8,113 Loans, net of unearned income (d) 118,048 — — 112,590 — — 112,590 Loans held for sale (b) 939 — — 939 — — 939 Other Cash and other short-term investments (a) 3,319 3,319 — — — — 3,319 LIABILITIES (by measurement category) Fair value - net income Derivative liabilities - trading (b) $ 1,485 $ 107 $ 2,637 $ 3 $ — $ (1,262) (f) $ 1,485 Fair value - OCI Derivative liabilities - hedging (b)(g) 3 — 3 — — — (f) 3 Amortized cost Time deposits (e) 7,373 — 7,392 — — — 7,392 Short-term borrowings (a) 9,463 126 9,337 — — — 9,463 Long-term debt (e) 19,307 12,196 6,685 — — — 18,881 Other Deposits with no stated maturity (a) 135,222 — 135,222 — — — 135,222 Valuation Methods and Assumptions (a) Fair value equals or approximates carrying amount. The fair value of deposits with no stated maturity does not take into consideration the value ascribed to core deposit intangibles. (b) Information pertaining to our methodology for measuring the fair values of these assets and liabilities is included in the sections entitled “Qualitative Disclosures of Valuation Techniques” and “Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis” within our 2022 Form 10-K Note 6 (“Fair Value Measurements”). Investments accounted for under the cost method (or cost less impairment adjusted for observable price changes for certain equity investments) are classified as Level 3 assets. These investments are not actively traded in an open market as sales for these types of investments are rare. The carrying amount of the investments carried at cost are adjusted for declines in value if they are considered to be other-than-temporary (or due to observable orderly transactions of the same issuer for equity investments eligible for the cost less impairment measurement alternative). These adjustments are included in “other income” on the income statement. (c) Fair values of held-to-maturity securities are determined by using models that are based on security-specific details, as well as relevant industry and economic factors. The most significant of these inputs are quoted market prices, interest rate spreads on relevant benchmark securities, and certain prepayment assumptions. We review the valuations derived from the models to ensure that they are reasonable and consistent with the values placed on similar securities traded in the secondary markets. (d) The fair value of loans is based on the present value of the expected cash flows. The projected cash flows are based on the contractual terms of the loans, adjusted for prepayments and use of a discount rate based on the relative risk of the cash flows, taking into account the loan type, maturity of the loan, liquidity risk, servicing costs, and a required return on debt and capital. In addition, an incremental liquidity discount is applied to certain loans, using historical sales of loans during periods of similar economic conditions as a benchmark. The fair value of loans includes lease financing receivables at their aggregate carrying amount, which is equivalent to their fair value. (e) Fair values of time deposits and long-term debt classified as Level 2 are based on discounted cash flows utilizing relevant market inputs. (f) Netting adjustments represent the amounts recorded to convert our derivative assets and liabilities from a gross basis to a net basis in accordance with the applicable accounting guidance. The net basis takes into account the impact of bilateral collateral and master netting agreements that allow us to settle all derivative contracts with a single counterparty on a net basis and to offset the net derivative position with the related cash collateral. Total derivative assets and liabilities include these netting adjustments. (g) Derivative assets-hedging and derivative liabilities-hedging includes both cash flow and fair value hedges. Additional information regarding our accounting policies for cash flow and fair value hedges is provided in Note 1 (“Summary of Significant Accounting Policies”) under the heading “Derivatives and Hedging” beginning on page 111 of our 2022 Form 10-K. Discontinued assets — education lending business . Our discontinued assets include government-guaranteed and private education loans originated through our education lending business that was discontinued in September 2009. This portfolio consists of loans recorded at carrying value with appropriate valuation reserves. All of these loans were excluded from the table above as follows: • Loans at carrying value, net of allowance, of $407 million ( $334 million at fair value) at March 31, 2023, and $434 million ($357 million at fair value) at December 31, 2022. These loans and securities are classified as Level 3 because we rely on unobservable inputs when determining fair value since observable market data is not available.

Securities

Securities	3 Months Ended
	Mar. 31, 2023
Investments, Debt and Equity Securities [Abstract]
Securities	6. Securities The amortized cost, unrealized gains and losses, and approximate fair value of our securities available for sale and held-to-maturity securities are presented in the following tables. Gross unrealized gains and losses represent the difference between the amortized cost and the fair value of securities on the balance sheet as of the dates indicated. Accordingly, the amount of these gains and losses may change in the future as market conditions change. March 31, 2023 December 31, 2022 Dollars in millions Amortized Cost (a) Gross Unrealized Gains Gross Unrealized Losses Fair Value Amortized Cost (b) Gross Unrealized Gains Gross Unrealized Losses Fair Value SECURITIES AVAILABLE FOR SALE U.S. Treasury, agencies, and corporations $ 10,027 $ — $ 513 $ 9,514 $ 10,044 $ — $ 629 $ 9,415 Agency residential collateralized mortgage obligations 19,770 — 3,345 16,425 20,180 — 3,747 16,433 Agency residential mortgage-backed securities 4,534 — 634 3,900 4,616 — 696 3,920 Agency commercial mortgage-backed securities 10,848 5 1,194 9,659 10,712 2 1,365 9,349 Other securities — — — — — — — — Total securities available for sale $ 45,179 $ 5 $ 5,686 $ 39,498 $ 45,552 $ 2 $ 6,437 $ 39,117 HELD-TO-MATURITY SECURITIES Agency residential collateralized mortgage obligations $ 5,566 $ 15 $ 232 $ 5,349 $ 4,586 $ 5 $ 283 $ 4,308 Agency residential mortgage-backed securities 177 — 12 165 181 — 16 165 Agency commercial mortgage-backed securities 2,584 2 184 2,402 2,522 1 208 2,315 Asset-backed securities (c) 1,219 — 64 1,155 1,407 — 96 1,311 Other securities 15 — 1 14 14 — — 14 Total held-to-maturity securities $ 9,561 $ 17 493 $ 9,085 $ 8,710 $ 6 $ 603 $ 8,113 (a) Amortized cost amounts exclude accrued interes t receivable which is recorded within Other Assets on the balance sheet. At March 31, 2023, accrued interest receivable on available for sale securities and held-to-maturity securities totaled $66 million and $24 million, respectively. (b) Amortized cost amounts exclude accrued interes t receivable which is recorded within Other Assets on the balance sheet. At December 31, 2022, accrued interest receivable on available for sale securities and held-to-maturity securities totaled $67 million and $88 million , respectively. (c) Consists primarily of $1.2 billion of securities as of March 31, 2023, and $1.4 billion of securities as of December 31, 2022, related to the purchase of senior notes from a securitization collateralized by sold indirect auto loans. The following table summarizes securities in an unrealized loss position for which an allowance for credit losses has not been recorded as of March 31, 2023, and December 31, 2022. Duration of Unrealized Loss Position Less than 12 Months 12 Months or Longer Total Dollars in millions Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses March 31, 2023 Securities available for sale: U.S Treasury, agencies, and corporations $ — $ — $ 9,514 $ 513 $ 9,514 $ 513 Agency residential collateralized mortgage obligations 127 4 16,297 3,341 16,424 3,345 Agency residential mortgage-backed securities 350 12 3,547 622 3,897 634 Agency commercial mortgage-backed securities 2,780 118 6,684 1,076 9,464 1,194 Held-to-maturity securities: Agency residential collateralized mortgage obligations 2,935 85 1,399 147 4,334 232 Agency residential mortgage-backed securities 45 2 119 10 164 12 Agency commercial mortgage-backed securities 370 32 1,958 152 2,328 184 Asset-backed securities — — 1,155 64 1,155 64 Other securities 10 — (a) 4 1 14 1 Total securities in an unrealized loss position $ 6,617 $ 253 $ 40,677 $ 5,926 $ 47,294 $ 6,179 December 31, 2022 Securities available for sale: U.S. Treasury, agencies, and corporations $ 494 $ 48 $ 8,920 $ 581 $ 9,414 $ 629 Agency residential collateralized mortgage obligations 3,114 377 13,317 3,370 16,431 3,747 Agency residential mortgage-backed securities 579 31 3,338 665 3,917 696 Agency commercial mortgage-backed securities 4,511 282 4,791 1,083 9,302 1,365 Held-to-maturity securities: Agency residential collateralized mortgage obligations 2,659 178 726 105 3,385 283 Agency residential mortgage-backed securities 165 16 — — 165 16 Agency commercial mortgage-backed securities 2,243 208 — — 2,243 208 Asset-backed securities 1 — (b) 1,309 96 1,310 96 Other securities 10 — (b) 4 — (b) 14 — Total securities in an unrealized loss position $ 13,776 $ 1,140 $ 32,405 $ 5,900 $ 46,181 $ 7,040 (a) At March 31, 2023, gross unrealized losses totaled less than $1 million for other securities held-to-maturity with a loss duration of less than 12 months. (b) At December 31, 2022, gross unrealized losses totaled less than $1 million for asset-back securities and other securities held-to-maturity with a loss duration of less than 12 months. At December 31, 2022, gross unrealized losses totaled less than $1 million for agency residential mortgage-backed securities held-to-maturity with a loss duration greater than 12 months or longer. Based on our evaluation at March 31, 2023, an allowance for credit losses has not been recorded nor have unrealized losses been recognized into income. The issuers of the securities are of high credit quality and have a history of no credit losses, management does not intend to sell, and it is likely that management will not be required to sell the securities prior to their anticipated recovery, and the decline in fair value is largely attributed to changes in interest rates and other market conditions. The issuers continue to make timely principal and interest payments. At March 31, 2023, securities available for sale and held-to-maturity securities totaling $31.5 billion we re pledged to secure securities sold under repurchase agreements, to secure public and trust deposits, to facilitate access to secured funding, and for other purposes required or permitted by law. The following table shows our securities by remaining maturity. CMOs, other mortgage-backed securities, and asset-backed securities in the available for sale portfolio and held-to-maturity portfolio are presented based on their expected average lives. The remaining securities, in both the available-for-sale and held-to-maturity portfolios, are presented based on their remaining contractual maturity. Actual maturities may differ from expected or contractual maturities since borrowers have the right to prepay obligations with or without prepayment penalties. March 31, 2023 Securities Available for Sale Held to Maturity Securities Dollars in millions Amortized Cost Fair Value Amortized Cost Fair Value Due in one year or less $ 1,944 $ 1,887 $ 21 $ 21 Due after one through five years 15,833 14,676 5,497 5,222 Due after five through ten years 21,477 18,176 3,191 3,023 Due after ten years 5,925 4,759 852 819 Total $ 45,179 $ 39,498 $ 9,561 $ 9,085

Derivatives and Hedging Activit

Derivatives and Hedging Activities	3 Months Ended
	Mar. 31, 2023
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivatives and Hedging Activities	7. Derivatives and Hedging Activities We are a party to various derivative instruments, mainly through our subsidiary, KeyBank. The primary derivatives that we use are interest rate swaps, caps, floors, forwards, and futures; foreign exchange contracts; commodity derivatives; and credit derivatives. Generally, these instruments help us manage exposure to interest rate risk, mitigate the credit risk inherent in our loan portfolio, hedge against changes in foreign currency exchange rates, and facilitate client financing and hedging needs. At March 31, 2023, after taking into account the effects of bilateral collateral and master netting agreements, we had $15 million of derivative assets and $38 million of derivative liabilities in a positive fair value position that relate to contracts entered into for hedging purposes. As a result of bilateral collateral and master netting agreements, we could have derivative contracts with negative fair values included in derivative assets and contracts with positive fair values included in derivative liabilities. As of the same date, after taking into account the effects of bilateral collateral and master netting agreements and a reserve for potential future losses, we had derivative assets of $382 million and derivative liabilities of $1.3 billion that were not designated as hedging instruments. These positions are primarily comprised of derivative contracts entered into for client accommodation purposes. Additional information regarding our accounting policies for derivatives is provided in Note 1 (“Summary of Significant Accounting Policies”) under the heading “Derivatives and Hedging” beginning on page 111 of our 2022 Form 10-K. Our derivative strategies and related risk management objectives are described in Note 8 (“Derivatives and Hedging Activities”) beginning on page 137 of our 2022 Form 10-K. Fair Values, Volume of Activity, and Gain/Loss Information Related to Derivative Instruments The following table summarizes the fair values of our derivative instruments on a gross and net basis as of March 31, 2023, and December 31, 2022. Total derivative assets and liabilities are adjusted to take into account the impact of legally enforceable master netting agreements that allow us to settle all derivative contracts with a single counterparty on a net basis and to offset the net derivative position with the related cash collateral. Securities collateral related to legally enforceable master netting agreements is not offset on the balance sheet. Our derivative instruments are included in “accrued income and other assets” or “accrued expenses and other liabilities” on the Consolidated Balance Sheets, as follows: March 31, 2023 December 31, 2022 Fair Value (a) Fair Value (a) Dollars in millions Notional Amount Derivative Assets Derivative Liabilities Notional Amount Derivative Assets Derivative Liabilities Derivatives designated as hedging instruments: Interest rate $ 50,243 $ 54 $ (23) $ 41,200 $ 114 $ 3 Derivatives not designated as hedging instruments: Interest rate 84,338 187 1,080 80,772 189 1,304 Foreign exchange 10,320 131 113 9,507 136 131 Commodity 14,382 986 962 16,176 1,328 1,304 Credit 146 1 3 95 1 3 Other (b) 1,860 16 9 940 13 5 Total derivatives not designated as hedging instruments: 111,046 1,321 2,167 107,490 1,667 2,747 Netting adjustments (c) — (978) (850) — (757) (1,262) Net derivatives in the balance sheet 161,289 397 1,294 148,690 1,024 1,488 Other collateral (d) — — (13) — — (5) Net derivative amounts $ 161,289 $ 397 $ 1,281 $ 148,690 $ 1,024 $ 1,483 (a) We take into account bilateral collateral and master netting agreements that allow us to settle all derivative contracts held with a single counterparty on a net basis, and to offset the net derivative position with the related cash collateral when recognizing derivative assets and liabilities. As a result, we could have derivative contracts with negative fair values included in derivative assets and contracts with positive fair values included in derivative liabilities. (b) Other derivatives include interest rate lock commitments related to our residential and commercial banking activities, forward sale commitments related to our residential mortgage banking activities, forward purchase and sales contracts consisting of contractual commitments associated with “to be announced” securities and when-issued securities, and other customized derivative contracts. (c) Netting adjustments represent the amounts recorded to convert our derivative assets and liabilities from a gross basis to a net basis in accordance with the applicable accounting guidance. Excess collateral that has not been offset against net derivative instrument positions totaled $184 million of collateral posted and $58 million of collateral held. (d) Other collateral represents the amount that cannot be used to offset our derivative assets and liabilities from a gross basis to a net basis in accordance with the applicable accounting guidance. The other collateral consists of securities and is exchanged under bilateral collateral and master netting agreements that allow us to offset the net derivative position with the related collateral. The application of the other collateral cannot reduce the net derivative position below zero. Therefore, excess other collateral, if any, is not reflected above. Fair value hedges. During the three months ended March 31, 2023, we did not exclude any portion of fair value hedging instruments from the assessment of hedge effectiveness. The following tables summarize the amounts that were recorded on the balance sheet as of March 31, 2023, and December 31, 2022, related to cumulative basis adjustments for fair value hedges. March 31, 2023 Dollars in millions Balance sheet line item in which the hedge item is included Carrying amount of hedged item (a) Hedge accounting basis adjustment (b) Interest rate contracts Long-term debt $ 10,836 $ (359) Interest rate contracts Securities Available for Sale (c) 1,663 53 December 31, 2022 Balance sheet line item in which the hedge item is included Carrying amount of hedged item (a) Hedge accounting basis adjustment (b) Interest rate contracts Long-term debt $ 10,411 $ (552) Interest rate contracts Securities Available for Sale (c) 405 48 (a) The carrying amount represents the portion of the asset or liability designated as the hedged item. (b) Basis adjustments related to de-designated hedged items that no longer qualify as fair value hedges reduced the hedge accounting basis adjustm en t by $6 million a nd $6 million at March 31, 2023, and December 31, 2022, respectively. (c) Certain amounts are designed as fair value hedges under the last-of-layer method. The carrying amount represents the amortized costs basis of the prepayable financial assets used to designate hedging relationships in which the hedged item is the l ast layer expected to be remaining at the end of the relationship. At March 31, 2023, and December 31, 2022, the amortized costs of the closed portfolios in these hedging relationships was $695 million and $708 million, respectively. Cash flow hedges. During the three-month period ended March 31, 2023, we did not exclude any portion of cash flow hedging instruments from the assessment of hedge effectiveness. Considering the interest rates, yield curves, and notional amounts as of March 31, 2023, we expect to reclassify an estimated $609 million of after-tax net losses on derivative instruments designated as cash flow hedges from AOCI to income during the next 12 months. In addition, we expect to reclassify approximately $3 million of net losses related to terminated cash flow hedges from AOCI to income during the next 12 months. These reclassified amounts could differ from actual amounts recognized due to changes in interest rates hedge de-designations and the addition of other hedges subsequent to March 31, 2023. As of March 31, 2023, the maximum length of time over which we hedge forecasted transactions is 4.76 years. The following tables summarize the effect of fair value and cash flow hedge accounting on the income statement for the three-month periods ended March 31, 2023, and March 31, 2022. Location and amount of net gains (losses) recognized in income on fair value and cash flow hedging relationships Dollars in millions Interest expense – long-term debt Interest income – loans Interest Income - securities Investment banking and debt placement fees Three months ended March 31, 2023 Total amounts presented in the consolidated statement of income $ (275) $ 1,476 $ 194 $ 145 Net gains (losses) on fair value hedging relationships Interest contracts Recognized on hedged items $ (155) $ — $ 6 $ — Recognized on derivatives designated as hedging instruments 108 — (2) — Net income (expense) recognized on fair value hedges $ (47) $ — $ 4 $ — Net gain (loss) on cash flow hedging relationships Interest contracts Realized gains (losses) (pre-tax) reclassified from AOCI into net income $ (1) $ (215) $ — $ — Net income (expense) recognized on cash flow hedges $ (1) $ (215) $ — $ — Three months ended March 31, 2022 Total amounts presented in the consolidated statement of income $ (49) $ 837 $ 173 $ 163 Net gains (losses) on fair value hedging relationships Interest contracts Recognized on hedged items $ 240 $ — $ (276) $ — Recognized on derivatives designated as hedging instruments (216) — 282 — Net income (expense) recognized on fair value hedges $ 24 $ — $ 6 $ — Net gain (loss) on cash flow hedging relationships Interest contracts Realized gains (losses) (pre-tax) reclassified from AOCI into net income $ (1) $ 64 $ — $ 2 Net income (expense) recognized on cash flow hedges $ (1) $ 64 $ — $ 2 The following tables summarize the pre-tax net gains (losses) on our cash flow hedges for the three-month periods ended March 31, 2023, and March 31, 2022, and where they are recorded on the income statement. The table includes net gains (losses) recognized in OCI during the period and net gains (losses) reclassified from OCI into income during the current period. Dollars in millions Net Gains (Losses) Recognized in OCI Income Statement Location of Net Gains (Losses) Reclassified From OCI Into Income Net Gains (Losses) Reclassified From OCI Into Income Three months ended March 31, 2023 Cash Flow Hedges Interest rate $ 109 Interest income — Loans $ (215) Interest rate (1) Interest expense — Long-term debt (1) Interest rate (1) Investment banking and debt placement fees — Total $ 107 $ (216) Three months ended March 31, 2022 Cash Flow Hedges Interest rate $ (670) Interest income — Loans $ 64 Interest rate 3 Interest expense — Long-term debt (1) Interest rate 9 Investment banking and debt placement fees 2 Total $ (658) $ 65 Nonhedging instruments The following table summarizes the pre-tax net gains (losses) on our derivatives that are not designated as hedging instruments for the three-month periods ended March 31, 2023, and March 31, 2022, and where they are recorded on the income statement. Three months ended March 31, 2023 Three months ended March 31, 2022 Dollars in millions Corporate services income Consumer mortgage income Other income Total Corporate services income Consumer mortgage income Other income Total NET GAINS (LOSSES) Interest rate $ 12 $ — $ (2) $ 10 $ 13 $ — $ 9 $ 22 Foreign exchange 13 — — 13 13 — — 13 Commodity 7 — — 7 5 — — 5 Credit — — (14) (14) 2 — (10) (8) Other — 1 (2) (1) — (4) 7 3 Total net gains (losses) $ 32 $ 1 $ (18) $ 15 $ 33 $ (4) $ 6 $ 35 Counterparty Credit Risk We hold collateral in the form of cas h and highly rated securities issued by the U.S. Treasury, government-sponsored enterprises, or GNMA . Cash collateral of $289 million was netted against derivative assets on the balance sheet at March 31, 2023, compared to $10 million of cash collateral netted against derivative assets at December 31, 2022. The cash collateral netted against derivative liabilities totaled $161 million at March 31, 2023, and $626 million at December 31, 2022. Our means of mitigating and managing exposure to credit risk on derivative contracts is described in Note 8 (“Derivatives and Hedging Activities”) beginning on page 137 of our 2022 Form 10-K under the heading “Counterparty Credit Risk.” The following table summarizes the fair value of our derivative assets by type at the dates indicated. These assets represent our gross exposure to potential loss after taking into account the effects of bilateral collateral and master netting agreements and other means used to mitigate risk. Dollars in millions March 31, 2023 December 31, 2022 Interest rate $ 169 $ 136 Foreign exchange 63 67 Commodity 439 820 Credit — — Other 15 11 Derivative assets before collateral 686 1,034 Plus(Less): Related collateral (289) (10) Total derivative assets $ 397 $ 1,024 We enter into derivative transactions with two primary groups: broker-dealers and banks, and clients. Given that these groups have different economic characteristics, we have different methods for managing counterparty credit exposure and credit risk. We enter into transactions with broker-dealers and banks for various risk management purposes. These types of transactions are primarily high dollar volume. We enter into bilateral collateral and master netting agreements with these counterparties. We clear certain types of derivative transactions with these counterparties, whereby central clearing organizations become the counterparties to our derivative contracts. In addition, we enter into derivative contracts through swa p execution facilities. Swap clearing and swap execution facilities reduce our exposure to counterparty credit risk. At March 31, 2023, we had gross exposure of $632 million to broker-dealers and banks. We had net exposure of $41 million after the application of master netting agreements and cash collateral, where such qualifying agreements exist. We enter into transactions using master netting agreements with clients to accommodate their business needs. In most cases, we mitigate our credit exposure by cross-collateralizing these transactions to the underlying loan collateral. For transactions that are not clearable, we mitigate our market risk by buying and selling U.S. Treasuries and Eurodollar futures or entering into offsetting positions. Due to the cross-collateralization to the underlying loan, we typically do not exchange cash or marketable securities collateral in connection with these transactions. To address the risk of default associated with these contracts, we have established a CVA reserve (included in “accrued income and other assets”) in the amount of $15 million at March 31, 2023. The CVA is calculated from potential future exposures, expected recovery rates, and market-implied probabilities of default. At March 31, 2023, we had gross exposure of $495 million to client counterparties and other entities that are not broker-dealers or banks for derivatives that have associated master netting agreements. We had net exposure of $356 million o n our derivatives with these counterparties after the application of master netting agreements, collateral, an d the related reserve. Credit Derivatives We are a buyer and, under limited circumstances, may be a seller of credit protection through the credit derivative market. We purchase credit derivatives to manage the credit risk associated with specific commercial lending and swap obligations as well as exposures to debt securities. Our credit derivative portfolio was in a net liability position o f $2 million a s of March 31, 2023, and $2 million as of December 31, 2022. Our credit derivative portfolio consists of traded credit default swap indices and risk participation agreements. Additional descriptions of our credit derivatives are provided in Note 8 (“Derivatives and Hedging Activities”) beginning on page 137 of our 2022 Form 10-K under the heading “Credit Derivatives.” The following table provides information on the types of credit derivatives sold by us and held on the balance sheet at March 31, 2023, and December 31, 2022. The notional amount represents the amount that the seller could be required to pay. The payment/performance risk shown in the table represents a weighted average of the default probabilities for all reference entities in the respective portfolios. These default probabilities are implied from observed credit indices in the credit default swap market, which are mapped to reference entities based on Key’s internal risk rating. March 31, 2023 December 31, 2022 Dollars in millions Notional Amount Average Term (Years) Payment / Performance Risk Notional Amount Average Term (Years) Payment / Performance Risk Other $ 1 11.04 6.05 % $ 1 15.17 5.10 % Total credit derivatives sold $ 1 — — $ 1 — — Credit Risk Contingent Features We have entered into certain derivative contracts that require us to post collateral to the counterparties when these contracts are in a net liability position. The amount of collateral to be posted is based on the amount of the net liability and thresholds generally related to our long-term senior unsecured credit ratings with Moody’s and S&P. Collateral requirements also are based on minimum transfer amounts, which are specific to each Credit Support Annex (a component of the ISDA Master Agreement) that we have signed with the counterparties. In a limited number of instances, counterparties have the right to terminate their ISDA Master Agreements with us if our ratings fall below a certain lev el, usually investment-grade level (i.e., “Baa3” for Moody’s and “BBB-” for S&P). At March 31, 2023, KeyBank’s rating was “A3” with Moody’s and “A-” with S&P, and KeyCorp’s rating was “Baa1” with Moody’s and “BBB+” with S&P. Refer to the table below for the aggregate fair value of all derivative contracts with credit risk contingent features held by KeyBank that were in a net liability position. Dollars in millions March 31, 2023 December 31, 2022 Net derivative liabilities with credit-risk contingent features (171) (612) Collateral posted 141 534 As of March 31, 2023, and December 31, 2022, th e fair value of additional collateral that could be required to be posted as a result of the credit risk related contingent features being triggered was immaterial to Key’s consolidated financial statements. There were no derivative contracts with credit risk contingent features held by KeyCorp at March 31, 2023.

Mortgage Servicing Assets

Mortgage Servicing Assets	3 Months Ended
	Mar. 31, 2023
Servicing Asset [Abstract]
Mortgage Servicing Assets	8. Mortgage Servicing Assets We originate and periodically sell commercial and residential mortgage loans but continue to service those loans for the buyers. We also may purchase the right to service commercial mortgage loans from other lenders. We record a servicing asset if we purchase or retain the right to service loans in exchange for servicing fees that exceed the going market servicing rate and are considered more than adequate compensation for servicing. Additional information pertaining to the accounting for mortgage and other servicing assets is included in Note 1 (“Summary of Significant Accounting Policies”) under the heading “Servicing Assets” beginning on page 112 of our 2022 Form 10-K. Commercial Changes in the carrying amount of commercial mortgage servicing assets are summarized as follows: Three months ended March 31, Dollars in millions 2023 2022 Balance at beginning of period $ 653 $ 634 Servicing retained from loan sales 9 30 Purchases 4 11 Amortization (32) (31) Temporary (impairments) recoveries — — Balance at end of period $ 634 $ 644 Fair value at end of period $ 981 $ 846 The fair value of commercial mortgage servicing assets is determined by calculating the present value of future cash flows associated with servicing the loans. This calculation uses a number of assumptions that are based on current market conditions. The range and weighted average of the significant unobservable inputs used to determine the fair value of our commercial mortgage servicing assets at March 31, 2023, and March 31, 2022, along with the valuation techniques, are shown in the following table: Dollars in millions March 31, 2023 March 31, 2022 Valuation Technique Significant Unobservable Input Range Weighted Average Range Weighted Average Discounted cash flow Expected defaults 0.96 % 2.00 % 1.06 % 1.00 % 2.00 % 1.12 % Residual cash flows discount rate 8.57 % 10.03 % 9.49 % 8.34 % 10.32 % 9.52 % Escrow earn rate 4.94 % 4.95 % 4.94 % 2.06 % 2.49 % 2.31 % Loan assumption rate — % 1.40 % 1.14 % — % 1.64 % 1.29 % If these economic assumptions change or prove incorrect, the fair value of commercial mortgage servicing assets may also change. Expected credit losses, escrow earning rates, and discount rates are critical to the valuation of commercial mortgage servicing assets. Estimates of these assumptions are based on how a market participant would view the respective rates, and reflect historical data associated with the commercial mortgage loans, industry trends, and other considerations. Actual rates may differ from those estimated due to changes in a variety of economic factors. A decrease in the value assigned to the escrow earning rates would cause a decrease in the fair value of our commercial mortgage servicing assets. An increase in the assumed default rates of commercial mortgage loans or an increase in the assigned discount rates would cause a decrease in the fair value of our commercial mortgage servicing assets. Prepayment activity on commercial serviced loans does not significantly affect the valuation of our commercial mortgage servicing assets. Unlike residential mortgages, commercial mortgages experience significantly lower prepayments due to certain contractual restrictions affecting the borrower’s ability to prepay the mortgage. The amortization of commercial servicing assets is determined in proportion to, and over the period of, the estimated net servicing income. The amortization of commercial servicing assets for each period, as shown in the table at the beginning of this note, is recorded as a reduction to contractual fee income. The contractual fee income from servicing commercial mortgage loans totaled $78 million for the three-month period ended March 31, 2023, and $67 million for the three-month period ended March 31, 2022. This fee income was offset by $32 million of amortization for the three-month period ended March 31, 2023, and $31 million for the three-month period ended March 31, 2022. Both the contractual fee income and the amortization are recorded, net, in “commercial mortgage servicing fees” on the income statement. Residential Changes in the carrying amount of residential mortgage servicing assets are summarized as follows: Three months ended March 31, Dollars in millions 2023 2022 Balance at beginning of period $ 106 $ 93 Servicing retained from loan sales 1 11 Purchases — — Amortization (2) (4) Temporary (impairments) recoveries — 1 Balance at end of period $ 105 $ 101 Fair value at end of period $ 129 $ 116 The fair value of mortgage servicing assets is determined by calculating the present value of future cash flows associated with servicing the loans. This calculation uses a number of assumptions that are based on current market conditions. The range and weighted-average of the significant unobservable inputs used to fair value our mortgage servicing assets at March 31, 2023, and March 31, 2022, along with the valuation techniques, are shown in the following table: March 31, 2023 March 31, 2022 Valuation Technique Significant Unobservable Input Range Weighted Average Range Weighted Average Discounted cash flow Prepayment speed 6.41 % 40.74 % 7.30 % 5.84 % 59.51 % 8.82 % Discount rate 7.50 % 8.50 % 7.54 % 7.50 % 8.52 % 7.53 % Servicing cost $ 62.00 $ 8,075 $ 67.36 $ 62.00 $ 8,075 $ 67.46 If these economic assumptions change or prove incorrect, the fair value of residential mortgage servicing assets may also change. Prepayment speed, discount rates, and servicing cost are critical to the valuation of residential mortgage servicing assets. Estimates of these assumptions are based on how a market participant would view the respective rates and reflect historical data associated with the residential mortgage loans, industry trends, and other considerations. Actual rates may differ from those estimated due to changes in a variety of economic factors. An increase in the prepayment speed would cause a decrease in the fair value of our residential mortgage servicing assets. An increase in the assigned discount rates and servicing cost assumptions would cause a decrease in the fair value of our residential mortgage servicing assets. The amortization of servicing assets for March 31, 2023, as shown in the table above, is recorded as a reduction to contractual fee income. The contractual fee income from servicing residential mortgage loans totaled $9 million for the three-month period ended March 31, 2023, and $10 million for the three-month period ended March 31, 2022. This fee income was offset by $2 million of amortization for the three-month period ended March 31, 2023, and $4 million for the three-month period ended March 31, 2022. Both the contractual fee income and the amortization are recorded, net, in “consumer mortgage income” on the income statement.

Leases

Leases	3 Months Ended
	Mar. 31, 2023
Leases [Abstract]
Leases	9. Leases As a lessee, we enter into leases of land, buildings, and equipment. Our real estate leases primarily relate to bank branches and office space. The leases of equipment principally relate to technology assets for data processing and data storage. As a lessor, we primarily provide financing through our equipment leasing business. For more information on our leasing activity, see Note 10 (“Leases”) beginning on page 145 of our 2022 Form 10-K. Lessor Equipment Leasing Leases may have fixed or floating rate terms. Variable payments are based on an index or other specified rate and are included in rental payments. Certain leases contain an option to extend the lease term or the option to terminate at the discretion of the lessee. Under certain conditions, lease agreements may also contain the option for a lessee to purchase the underlying asset. Interest income from sales-type and direct financing leases is recognized in "interest income — loans" on the income statement. Income related to operating leases is recognized in “operating lease income and other leasing gains” on the income statement. The components of equipment leasing income are summarized in the table below: Three months ended March 31, Dollars in millions 2023 2022 Sales-type and direct financing leases Interest income on lease receivable $ 19 $ 16 Interest income related to accretion of unguaranteed residual asset 3 4 Total sales-type and direct financing lease income $ 22 $ 20 Operating leases Operating lease income related to lease payments $ 24 $ 28 Other operating leasing gains 1 4 Total operating lease income and other leasing gains 25 32 Total lease income $ 47 $ 52
Leases	9. Leases As a lessee, we enter into leases of land, buildings, and equipment. Our real estate leases primarily relate to bank branches and office space. The leases of equipment principally relate to technology assets for data processing and data storage. As a lessor, we primarily provide financing through our equipment leasing business. For more information on our leasing activity, see Note 10 (“Leases”) beginning on page 145 of our 2022 Form 10-K. Lessor Equipment Leasing Leases may have fixed or floating rate terms. Variable payments are based on an index or other specified rate and are included in rental payments. Certain leases contain an option to extend the lease term or the option to terminate at the discretion of the lessee. Under certain conditions, lease agreements may also contain the option for a lessee to purchase the underlying asset. Interest income from sales-type and direct financing leases is recognized in "interest income — loans" on the income statement. Income related to operating leases is recognized in “operating lease income and other leasing gains” on the income statement. The components of equipment leasing income are summarized in the table below: Three months ended March 31, Dollars in millions 2023 2022 Sales-type and direct financing leases Interest income on lease receivable $ 19 $ 16 Interest income related to accretion of unguaranteed residual asset 3 4 Total sales-type and direct financing lease income $ 22 $ 20 Operating leases Operating lease income related to lease payments $ 24 $ 28 Other operating leasing gains 1 4 Total operating lease income and other leasing gains 25 32 Total lease income $ 47 $ 52
Leases	9. Leases As a lessee, we enter into leases of land, buildings, and equipment. Our real estate leases primarily relate to bank branches and office space. The leases of equipment principally relate to technology assets for data processing and data storage. As a lessor, we primarily provide financing through our equipment leasing business. For more information on our leasing activity, see Note 10 (“Leases”) beginning on page 145 of our 2022 Form 10-K. Lessor Equipment Leasing Leases may have fixed or floating rate terms. Variable payments are based on an index or other specified rate and are included in rental payments. Certain leases contain an option to extend the lease term or the option to terminate at the discretion of the lessee. Under certain conditions, lease agreements may also contain the option for a lessee to purchase the underlying asset. Interest income from sales-type and direct financing leases is recognized in "interest income — loans" on the income statement. Income related to operating leases is recognized in “operating lease income and other leasing gains” on the income statement. The components of equipment leasing income are summarized in the table below: Three months ended March 31, Dollars in millions 2023 2022 Sales-type and direct financing leases Interest income on lease receivable $ 19 $ 16 Interest income related to accretion of unguaranteed residual asset 3 4 Total sales-type and direct financing lease income $ 22 $ 20 Operating leases Operating lease income related to lease payments $ 24 $ 28 Other operating leasing gains 1 4 Total operating lease income and other leasing gains 25 32 Total lease income $ 47 $ 52
Leases	9. Leases As a lessee, we enter into leases of land, buildings, and equipment. Our real estate leases primarily relate to bank branches and office space. The leases of equipment principally relate to technology assets for data processing and data storage. As a lessor, we primarily provide financing through our equipment leasing business. For more information on our leasing activity, see Note 10 (“Leases”) beginning on page 145 of our 2022 Form 10-K. Lessor Equipment Leasing Leases may have fixed or floating rate terms. Variable payments are based on an index or other specified rate and are included in rental payments. Certain leases contain an option to extend the lease term or the option to terminate at the discretion of the lessee. Under certain conditions, lease agreements may also contain the option for a lessee to purchase the underlying asset. Interest income from sales-type and direct financing leases is recognized in "interest income — loans" on the income statement. Income related to operating leases is recognized in “operating lease income and other leasing gains” on the income statement. The components of equipment leasing income are summarized in the table below: Three months ended March 31, Dollars in millions 2023 2022 Sales-type and direct financing leases Interest income on lease receivable $ 19 $ 16 Interest income related to accretion of unguaranteed residual asset 3 4 Total sales-type and direct financing lease income $ 22 $ 20 Operating leases Operating lease income related to lease payments $ 24 $ 28 Other operating leasing gains 1 4 Total operating lease income and other leasing gains 25 32 Total lease income $ 47 $ 52
Leases	9. Leases As a lessee, we enter into leases of land, buildings, and equipment. Our real estate leases primarily relate to bank branches and office space. The leases of equipment principally relate to technology assets for data processing and data storage. As a lessor, we primarily provide financing through our equipment leasing business. For more information on our leasing activity, see Note 10 (“Leases”) beginning on page 145 of our 2022 Form 10-K. Lessor Equipment Leasing Leases may have fixed or floating rate terms. Variable payments are based on an index or other specified rate and are included in rental payments. Certain leases contain an option to extend the lease term or the option to terminate at the discretion of the lessee. Under certain conditions, lease agreements may also contain the option for a lessee to purchase the underlying asset. Interest income from sales-type and direct financing leases is recognized in "interest income — loans" on the income statement. Income related to operating leases is recognized in “operating lease income and other leasing gains” on the income statement. The components of equipment leasing income are summarized in the table below: Three months ended March 31, Dollars in millions 2023 2022 Sales-type and direct financing leases Interest income on lease receivable $ 19 $ 16 Interest income related to accretion of unguaranteed residual asset 3 4 Total sales-type and direct financing lease income $ 22 $ 20 Operating leases Operating lease income related to lease payments $ 24 $ 28 Other operating leasing gains 1 4 Total operating lease income and other leasing gains 25 32 Total lease income $ 47 $ 52

Goodwill

Goodwill	3 Months Ended
	Mar. 31, 2023
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill	10. Goodwill Our annual goodwill impairment testing is performed as of October 1 each year, or more frequently as events occur or circumstances change that would more-likely-than-not reduce the fair value of a reporting unit below its carrying amount. A quantitative or qualitative testing approach may be used. Additional information pertaining to our accounting policy for goodwill and other intangible assets is summarized in Note 1 (“Summary of Significant Accounting Policies”) under the heading “Goodwill and Other Intangible Assets” beginning on page 112 of our 2022 Form 10-K. Changes in the carrying amount of goodwill by reporting segment are presented in the following table: Dollars in millions Consumer Bank Commercial Bank Total BALANCE AT MARCH 31, 2022 $ 1,761 $ 932 $ 2,693 XUP acquisition measurement period adjustment — 1 1 GradFin acquisition 58 — 58 BALANCE AT DECEMBER 31, 2022 $ 1,819 $ 933 $ 2,752 BALANCE AT MARCH 31, 2023 $ 1,819 $ 933 $ 2,752

Variable Interest Entities

Variable Interest Entities	3 Months Ended
	Mar. 31, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Variable Interest Entities	11. Variable Interest Entities Our significant VIEs are summarized below. Additional information pertaining to the criteria used in determining if an entity is a VIE is included in Note 13 (“Variable Interest Entities”) beginning on page 149 of our 2022 Form 10-K. LIHTC investments. We had $2.1 billion and $1.9 billion of investments in LIHTC operating partnerships at March 31, 2023, and December 31, 2022, respectively. These investments are recorded in “accrued income and other assets” on our Consolidated Balance Sheets. We do not have any loss reserves recorded related to these investments because we believe the likelihood of any loss to be remote. For all legally binding, unfunded equity commitments, we increase our recognized investment and recognize a liability. As of March 31, 2023, and December 31, 2022, we had liabilities of $1.1 billion and $957 million, respectively, related to investments in qualified affordable housing projects, which are recorded in “accrued expenses and other liabilities” on our Consolidated Balance Sheets. We continue to invest in these LIHTC operating partnerships. The assets and liabilities presented in the table below convey the size of KCDC’s direct and indirect investments at March 31, 2023, and December 31, 2022. As these investments represent unconsolidated VIEs, the assets and liabilities of the investments themselves are not recorded on our Consolidated Balance Sheets. Additional information pertaining to our LIHTC investments is included in Note 13 (“Variable Interest Entities”) beginning on page 149 of our 2022 Form 10-K. Unconsolidated VIEs Dollars in millions Total Assets Total Liabilities Maximum Exposure to Loss March 31, 2023 LIHTC investments $ 7,921 $ 2,913 $ 2,514 December 31, 2022 LIHTC investments $ 8,227 $ 3,091 $ 2,370 We amortize our LIHTC investments over the period that we expect to receive the tax benefits. During the three months ended March 31, 2023, we recognized $53 million of amortization and $51 million of tax credits associated with these investments within “income taxes” on our income statement. During the three months ended March 31, 2022, we recognized $46 million of amortization and $45 million of tax credits associated with these investments within “income taxes” on our income statement. Principal investments. Our maximum exposure to loss associated with indirect principal investments consists of the investments’ fair value plus any unfunded equity commitments. The fair value of our indirect principal investments totaled $20 million and $34 million at March 31, 2023, and December 31, 2022, respectively. These investments are recorded in “other investments” on our Consolidated Balance Sheets. The table below reflects the size of the private equity funds in which we were invested as well as our maximum exposure to loss in connection with these investments at March 31, 2023, and December 31, 2022. Unconsolidated VIEs Dollars in millions Total Assets Total Liabilities Maximum Exposure to Loss March 31, 2023 Indirect investments $ 4,523 $ 87 $ 23 December 31, 2022 Indirect investments $ 6,636 $ 90 $ 43 Through our principal investing entities, we have formed and funded operating entities that provide management and other related services to our investment company funds, which directly invest in portfolio companies. These entities had no assets at March 31, 2023, and December 31, 2022, that can be used to settle the entities’ obligations. The entities had no liabilities at March 31, 2023, and December 31, 2022, and other equity investors have no recourse to our general credit. Additional information on our indirect and direct principal investments is provided in Note 6 (“Fair Value Measurements”) beginning on page 125 and in Note 13 (“Variable Interest Entities “) beginning on page 149 of our 2022 Form 10-K. Other unconsolidated VIEs. We are involved with other various entities in the normal course of business which we have determined to be VIEs. We have determined that we are not the primary beneficiary of these VIEs because we do not have the power to direct the activities that most significantly impact their economic performance or hold a variable interest that could potentially be significant. The table below shows our assets and liabilities associated with these unconsolidated VIEs at March 31, 2023, and December 31, 2022. These assets are recorded in “accrued income and other assets,” “other investments,” “securities available for sale,” “held-to-maturity securities,” and “loans, net of unearned income” on our Consolidated Balance Sheets. Of the total balance as of March 31, 2023, $1.2 billion related to the purchase of senior notes from a securitization collateralized by sold indirect auto loans. Additional information pertaining to our other unconsolidated VIEs is included in Note 13 (“Variable Interest Entities“) under the heading “Other unconsolidated VIEs” on page 151 of our 2022 Form 10-K. Other unconsolidated VIEs Dollars in millions Total Assets Total Liabilities March 31, 2023 Other unconsolidated VIEs $ 1,659 $ — December 31, 2022 Other unconsolidated VIEs $ 1,798 $ 1

Income Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2023
Income Tax Disclosure [Abstract]
Income Taxes	12. Income Taxes Income Tax Provision In accordance with the applicable accounting guidance, the principal method established for computing the provision for income taxes in interim periods requires us to make our best estimate of the effective tax rate expected to be applicable for the full year. This estimated effective tax rate is then applied to interim consolidated pre-tax operating income to determine the interim provision for income taxes. The effective tax rate, which is the provision for income taxes as a percentage of income before income taxes, was 20.7% for the first quarter of 2023 and 16.7% for the first quarter of 2022. The effective tax rates are less than our combined federal and state statutory tax rate of 23.7%, primarily due to income from investments in tax-advantaged assets such as corporate-owned life insurance and tax credits associated with low-income housing investments. Deferred Taxes At March 31, 2023, we had a net deferred tax asset of $1.7 billion , compared to a net deferred tax asset of $2.0 billion at December 31, 2022, which are included in “accrued income and other assets” on the balance sheet. The deferred tax asset is primarily related to market fluctuations in the investment security portfolio accounted for in other comprehensive income. To determine the amount of deferred tax assets that are more likely than not to be realized, and therefore recorded, we conduct a quarterly assessment of all available evidence. This evidence includes, but is not limited to, taxable income in prior periods, projected future taxable income, and projected future reversals of deferred tax items. These assessments involve a degree of subjectivity and may undergo change. Based on these criteria, we had a valuation allowance of $11 million at March 31, 2023, and $11 million at December 31, 2022. The valuation allowance is associated with federal and state capital loss carryforwards. Unrecognized Tax Benefits At March 31, 2023, Key’s unrecognized tax benefits were $40 million. As permitted under the applicable accounting guidance for income taxes, it is our policy to recognize interest and penalties related to unrecognized tax benefits in “income tax expense.” Pre-1988 Bank Reserves Acquired in a Business Combination Retained earnings of KeyBank included approximately $92 million of allocated bad debt deductions for which no income taxes have been recorded. Under current federal law, these reserves are subject to recapture into taxable income if KeyBank, or any successor, fails to maintain its bank status under the Internal Revenue Code or makes non-dividend distributions or distributions greater than its accumulated earnings and profits. No deferred tax liability has been established as these events are not expected to occur in the foreseeable future.

Acquisitions and Discontinued O

Acquisitions and Discontinued Operations	3 Months Ended
	Mar. 31, 2023
Business Combination and Asset Acquisition [Abstract]
Acquisitions and Discontinued Operations	13. Acquisitions and Discontinued Operations Acquisitions XUP Payments. On November 19, 2021, KeyBank acquired XUP Payments, a B2B focused digital platform. The acquisition was accounted for as a business combination. As a result of the acquisition, we recognized goodwill of $20.6 million and no separately identified intangible assets were recorded. Other acquired assets and liabilities of XUP were immaterial. The valuation was final as of March 31, 2022. GradFin. On May 2, 2022, KeyBank acquired GradFin, a public service loan forgiveness counseling provider. The acquisition was accounted for as a business combination. Consideration paid totaled $72 million consisting of $62 million in cash and $10 million in contingent consideration. As a result of the acquisition, we recognized goodwill of $58 million and other intangible assets of $12 million, with remaining assets acquired consisting primarily of cash. Other acquired assets and liabilities of GradFin were immaterial. The valuation was final as of September 30, 2022. Discontinued operations Discontinued operations primarily includes our government-guaranteed and private education lending business. At March 31, 2023, and December 31, 2022, approximately $407 million and $434 million, respectively, of education loans are included in discontinued assets on the Consolidated Balance Sheets. Net interest income after provision for credit losses for this business is not material and is included in income (loss) from discontinued operations, net of taxes on the Consolidated Statements of Income.

Securities Financing Activities

Securities Financing Activities	3 Months Ended
	Mar. 31, 2023
Banking and Thrift, Other Disclosure [Abstract]
Securities Financing Activities	14. Securities Financing Activities Additional information regarding our securities financing activities, including risk management activities, is provided in Note 1 (“Summary of Significant Accounting Policies”) beginning on page 105 our 2022 Form 10-K and Note 16 (“Securities Financing Activities”) beginning on page 154 of our 2022 Form 10-K. The following table summarizes our securities financing agreements at March 31, 2023, and December 31, 2022: March 31, 2023 December 31, 2022 Dollars in millions Gross Amount Presented in Balance Sheet Netting Adjustments (a) Collateral (b) Net Amounts Gross Amount Presented in Balance Sheet Netting Adjustments (a) Collateral (b) Net Amounts Offsetting of financial assets: Reverse repurchase agreements $ 12 $ (12) $ — $ — $ 8 $ (8) $ — $ — Securities borrowed — — — — — — — — Total $ 12 $ (12) $ — $ — $ 8 $ (8) $ — $ — Offsetting of financial liabilities: Repurchase agreements (c) $ 59 $ (12) $ (47) $ — $ 71 $ (8) $ (63) $ — Total $ 59 $ (12) $ (47) $ — $ 71 $ (8) $ (63) $ — (a) Netting adjustments take into account the impact of master netting agreements that allow us to settle with a single counterparty on a net basis. (b) These adjustments take into account the impact of bilateral collateral agreements that allow us to offset the net positions with the related collateral. The application of collateral cannot reduce the net position below zero. Therefore, excess collateral, if any, is not reflected above. (c) Repurchase agreements are collateralized by mortgage-backed securities and U.S. Treasuries and are contracted on an overnight or continuous basis. As of March 31, 2023, the carrying amount of assets pledged as collateral against repurchase agreements totaled $122 million. Assets pledged as collateral are reported in “securities available for sale” and “held-to-maturity securities” on the Consolidated Balance Sheets. At March 31, 2023, the liabilities associated with collateral pledged were solely comprised of customer sweep financing activity and had a carrying value of $47 million. The collateral pledged under customer sweep repurchase agreements is posted to a third-party custodian and cannot be sold or repledged by the secured party. The risk related to a decline in the market value of collateral pledged is minimal given the collateral's high credit quality and the overnight duration of the repurchase agreements.

Employee Benefits

Employee Benefits	3 Months Ended
	Mar. 31, 2023
Retirement Benefits [Abstract]
Employee Benefits	15. Employee Benefits Pension Plans The components of net pension cost (benefit) for all funded and unfunded plans are recorded in Other expense and are summarized in the following table. For more information on our Pension Plans and Other Postretirement Benefit Plans, see Note 18 (“Employee Benefits”) beginning on page 157 of our 2022 Form 10-K. Three months ended March 31, Dollars in millions 2023 2022 Interest cost on PBO $ 11 $ 7 Expected return on plan assets (11) (7) Amortization of losses 3 4 Settlement loss — — Net pension cost $ 3 $ 4

Trust Preferred Securities Issu

Trust Preferred Securities Issued by Unconsolidated Subsidiaries	3 Months Ended
	Mar. 31, 2023
Banking and Thrift, Other Disclosure [Abstract]
Trust Preferred Securities Issued by Unconsolidated Subsidiaries	16. Trust Preferred Securities Issued by Unconsolidated Subsidiaries We own the outstanding common stock of business trusts formed by us that issued corporation-obligated, mandatorily redeemable, trust preferred securities. The trusts used the proceeds from the issuance of their trust preferred securities and common stock to buy debentures issued by KeyCorp. These debentures are the trusts’ only assets; the interest payments from the debentures finance the distributions paid on the mandatorily redeemable trust preferred securities. The outstanding common stock of these business trusts is recorded in Other investments on the Consolidated Balance Sheets. We unconditionally guarantee the following payments or distributions on behalf of the trusts: • required distributions on the trust preferred securities; • the redemption price when a capital security is redeemed; and • the amounts due if a trust is liquidated or terminated. The Regulatory Capital Rules, discussed in “Supervision and regulation” in Item 2 of this report, require us to treat our mandatorily redeemable trust preferred securities as Tier 2 capital. The trust preferred securities, common stock, and related debentures are summarized as follows: Dollars in millions Trust Preferred Securities, Net of Discount (a)(d) Common Stock Principal Amount of Debentures, Net of Discount (b)(d) Interest Rate of Trust Preferred Securities and Debentures (c) Maturity of Trust Preferred Securities and Debentures March 31, 2023 KeyCorp Capital I $ 156 $ 6 $ 162 5.494 % 2028 KeyCorp Capital II 90 4 94 6.875 2029 KeyCorp Capital III 116 4 120 7.750 2029 HNC Statutory Trust III 20 1 21 6.322 2035 HNC Statutory Trust IV 20 1 21 6.176 2036 Willow Grove Statutory Trust I 18 1 19 6.082 2037 Westbank Capital Trust II 8 — 8 7.153 2034 Westbank Capital Trust III 8 — 8 7.153 2034 Total $ 436 $ 17 $ 453 6.533 % — December 31, 2022 $ 433 $ 17 $ 450 5.321 % — (a) The trust preferred securities must be redeemed when the related debentures mature, or earlier if provided in the governing indenture. Each issue of trust preferred securities carries an interest rate identical to that of the related debenture. (b) We have the right to redeem these debentures. If the debentures purchased by KeyCorp Capital I, HNC Statutory Trust III, Willow Grove Statutory Trust I, HNC Statutory Trust IV, Westbank Capital Trust II, or Westbank Capital Trust III are redeemed before they mature, the redemption price will be the principal amount, plus any accrued but unpaid interest. If the debentures purchased by KeyCorp Capital II or KeyCorp Capital III are redeemed before they mature, the redemption price will be the greater of: (i) the principal amount, plus any accrued but unpaid interest, or (ii) the sum of the present values of principal and interest payments discounted at the Treasury Rate (as defined in the applicable indenture), plus 20 basis points for KeyCorp Capital II or 25 basis points for KeyCorp Capital III, or 50 basis points in the case of redemption upon either a tax or a capital treatment event for either KeyCorp Capital II or KeyCorp Capital III, plus any accrued but unpaid interest. (c) The interest rates for the trust preferred securities issued by KeyCorp Capital II and KeyCorp Capital III are fixed. The trust preferred securities issued by KeyCorp Capital I have a floating interest rate, equal to three-month LIBOR plus 74 basis points, that reprices quarterly. The trust preferred securities issued by HNC Statutory Trust III have a floating interest rate, equal to three-month LIBOR plus 140 basis points, that reprices quarterly. The trust preferred securities issued by Willow Grove Statutory Trust I have a floating interest rate, equal to three-month LIBOR plus 131 basis points, that reprices quarterly. The trust preferred securities issued by HNC Statutory Trust IV have a floating interest rate, equal to three-month LIBOR plus 128 basis points, that reprices quarterly. The trust preferred securities issued by Westbank Capital Trust II and Westbank Capital Trust III each have a floating interest rate, equal to three-month LIBOR plus 219 basis points, that reprices quarterly. The total interest rates are weighted-average rates. (d) Certain trust preferred securities include basis adjustments related to fair value hedges totaling $21 million at March 31, 2023, and $17 million at December 31, 2022. See Note 7 (“Derivatives and Hedging Activities”) for an explanation of fair value hedges.

Contingent Liabilities and Guar

Contingent Liabilities and Guarantees	3 Months Ended
	Mar. 31, 2023
Commitments and Contingencies Disclosure [Abstract]
Contingent Liabilities and Guarantees	17. Contingent Liabilities and Guarantees Legal Proceedings Litigation. From time to time, in the ordinary course of business, we and our subsidiaries are subject to various litigation, investigations, and administrative proceedings. Private, civil litigation may range from individual actions involving a single plaintiff to putative class action lawsuits with potentially thousands of class members. Investigations may involve both formal and informal proceedings, by both government agencies and self-regulatory bodies. These matters may involve claims for substantial monetary relief. At times, these matters may present novel claims or legal theories. Due to the complex nature of these various other matters, it may be years before some matters are resolved. While it is impossible to ascertain the ultimate resolution or range of financial liability, based on information presently known to us, we do not believe there is any matter to which we are a party, or involving any of our properties that, individually or in the aggregate, would reasonably be expected to have a material adverse effect on our financial condition. We continually monitor and reassess the potential materiality of these litigation matters. We note, however, that in light of the inherent uncertainty in legal proceedings there can be no assurance that the ultimate resolution will not exceed established reserves. As a result, the outcome of a particular matter, or a combination of matters, may be material to our results of operations for a particular period, depending upon the size of the loss or our income for that particular period. Record-Keeping Investigation. The Company’s broker-dealer and investment advisory subsidiaries have been responding to a request for information from the SEC concerning compliance with certain record-keeping requirements relating to business communications transmitted on unapproved electronic communications platforms. The SEC is conducting similar inquiries into recordkeeping practices at other financial institutions. The Company is cooperating with the inquiry. Guarantees We are a guarantor in various agreements with third parties. The following table shows the types of guarantees that we had outstanding at March 31, 2023. Information pertaining to the basis for determining the liabilities recorded in connection with these guarantees is included in Note 1 (“Summary of Significant Accounting Policies”) under the heading “Contingencies and Guarantees” beginning on page 113 of our 2022 Form 10-K. March 31, 2023 Maximum Potential Undiscounted Future Payments Liability Recorded Dollars in millions Financial guarantees: Standby letters of credit $ 4,838 $ 90 Recourse agreement with FNMA 6,812 83 Residential mortgage reserve 3,279 13 Written put options (a) 3,725 248 Total $ 18,654 $ 434 (a) The maximum potential undiscounted future payments represent notional amounts of derivatives qualifying as guarantees. We determine the payment/performance risk associated with each type of guarantee described below based on the probability that we could be required to make the maximum potential undiscounted future payments shown in the preceding table. We use a scale of low (0% to 30% probability of payment), moderate (greater than 30% to 70% probability of payment), or high (greater than 70% probability of payment) to assess the payment/performance risk, and have determined that the payment/performance risk associated with each type of guarantee outstanding at March 31, 2023, is low. Information pertaining to the nature of each of the guarantees listed below is included in Note 22 (“Commitments, Contingent Liabilities, and Guarantees”) under the heading “Guarantees” beginning on page 166 of our 2022 Form 10-K. Standby letters of credit. At March 31, 2023, our standby letters of credit had a remaining weighted-average life of 1.5 years , with remaining actual lives ranging from less than 1 year to as many as 11.7 years . Recourse agreement with FNMA. At March 31, 2023, the outstanding commercial mortgage loans in this program had a weighted-average remaining term of 7.3 years, and the unpaid principal balance outstanding of loans sold by us as a participant was $22.2 billion. The maximum potential amount of undiscounted future payments that we could be required to make under this program, as shown in the preceding table, is equal to approximately 30.7% of the principal balance of loans outstanding at March 31, 2023. FNMA delegates responsibility for originating, underwriting, and servicing mortgages, and we assume a limited portion of the risk of loss during the remaining term on each commercial mortgage loan that we sell to FNMA. We maintain a reserve for such potential losses in an amount that we believe approximates the fair value of our liability in addition to the expected credit loss for the guarantee as described in Note 4 (“Asset Quality”). Residential Mortgage Banking. At March 31, 2023, the unpaid principal balance outstanding of loans sold by us in this program was $10.9 billion . The maximum potential amount of undiscounted future payments that we could be required to make under this program, as shown in the preceding table, is equal to approximately 30% of the principal balance of loans outstanding at March 31, 2023. Our liability for estimated repurchase obligations on loans sold, which is included in “accrued expenses and other liabilities” on the Consolidated Balance Sheets, was $13 million at March 31, 2023. For more information on our residential mortgages, see Note 8 (“Mortgage Servicing Assets”). Written put options. At March 31, 2023, our written put options had an average life of 2.0 years. These written put options are accounted for as derivatives at fair value, as further discussed in Note 7 (“Derivatives and Hedging Activities”). Written put options where the counterparty is a broker-dealer or bank are accounted for as derivatives at fair value but are not considered guarantees since these counterparties typically do not hold the underlying instruments. In addition, we are a purchaser and seller of credit derivatives, which are further discussed in Note 7 (“Derivatives and Hedging Activities”). Other Off-Balance Sheet Risk Other off-balance sheet risk stems from financial instruments that do not meet the definition of a guarantee as specified in the applicable accounting guidance, and from other relationships. Additional information pertaining to types of other off-balance sheet risk is included in Note 22 (“Commitments, Contingent Liabilities, and Guarantees”) under the heading “Other Off-Balance Sheet Risk” on page 166 of our 2022 Form 10-K.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income	3 Months Ended
	Mar. 31, 2023
Equity [Abstract]
Accumulated Other Comprehensive Income	18. Accumulated Other Comprehensive Income Our changes in AOCI for the three months ended March 31, 2023, and March 31, 2022, are as follows: Dollars in millions Unrealized gains (losses) on securities available for sale Unrealized gains (losses) on derivative financial instruments Net pension and postretirement benefit costs Total Balance at December 31, 2022 $ (4,895) $ (1,124) $ (276) $ (6,295) Other comprehensive income before reclassification, net of income taxes 575 80 (1) 654 Amounts reclassified from AOCI, net of income taxes (a) — 165 2 167 Net current-period other comprehensive income, net of income taxes 575 245 1 821 Balance at March 31, 2023 $ (4,320) $ (879) $ (275) $ (5,474) Balance at December 31, 2021 $ (403) $ 88 $ (271) $ (586) Other comprehensive income before reclassification, net of income taxes (1,784) (511) (1) (2,296) Amounts reclassified from AOCI, net of income taxes (a) — (50) 3 (47) Net current-period other comprehensive income, net of income taxes (1,784) (561) 2 (2,343) Balance at March 31, 2022 $ (2,187) $ (473) $ (269) $ (2,929) (a) See table below for details about these reclassifications. Our reclassifications out of AOCI for the three months ended March 31, 2023, and March 31, 2022, are as follows: Three months ended March 31, Affected Line Item in the Consolidated Statement of Income Dollars in millions 2023 2022 Unrealized gains (losses) on derivative financial instruments Interest rate $ (215) $ 64 Interest income — Loans Interest rate (1) (1) Interest expense — Long-term debt Interest rate — 2 Investment banking and debt placement fees (216) 65 Income (loss) from continuing operations before income taxes (51) 15 Income taxes $ (165) $ 50 Income (loss) from continuing operations Net pension and postretirement benefit costs Amortization of losses $ (3) $ (4) Other expense Settlement loss — — Other expense (3) (4) Income (loss) from continuing operations before income taxes (1) (1) Income taxes $ (2) $ (3) Income (loss) from continuing operations

Shareholders' Equity

Shareholders' Equity	3 Months Ended
	Mar. 31, 2023
Equity [Abstract]
Shareholders' Equity	19. Shareholders' Equity Comprehensive Capital Plan In July 2021, the Board of Directors authorized the repurchase of up to $1.5 billion of our Common Shares, effective for the third quarter of 2021 through the third quarter of 2022. In September 2022, the Board of Directors approved the extension of the previous authorization through the third quarter of 2023. As of March 31, 2023, approximately $752 million remained available for repurchase under the authorization. During the first quarter of 2023, Key repurchased $38 million of shares under this authorization as well as $34 million of shares related to equity compensation programs. Consistent with our capital plan, the Board declared a quarterly dividend of $.205 per Common Share for the first quarter of 2023. Preferred Stock The following table summarizes our preferred stock at March 31, 2023. Preferred stock series Amount outstanding (in millions) Shares authorized and outstanding Par value Liquidation preference Ownership interest per depositary share Liquidation preference per depositary share First quarter 2023 dividends paid per depositary share 5.000% Fixed-to-Floating Rate Perpetual Noncumulative Series D $ 525 21,000 $ 1 $ 25,000 1/25th $ 1,000 $ 12.50 6.125% Fixed-to-Floating Rate Perpetual Noncumulative Series E 500 500,000 1 1,000 1/40th 25 .382813 5.650% Fixed Rate Perpetual Noncumulative Series F 425 425,000 1 1,000 1/40th 25 .353125 5.625% Fixed Rate Perpetual Non-Cumulative Series G 450 450,000 1 1,000 1/40th 25 .351563 6.200% Fixed Rate Reset Perpetual Non-Cumulative Series H 600 600,000 1 1,000 1/40th 25 .387500

Business Segment Reporting

Business Segment Reporting	3 Months Ended
	Mar. 31, 2023
Segment Reporting [Abstract]
Business Segment Reporting	20. Business Segment Reporting The following is description of the segments and their primary businesses at March 31, 2023. Consumer Bank The Consumer Bank serves individuals and small businesses throughout our 15-state branch footprint as well as healthcare professionals nationally through our Laurel Road digital brand by offering a variety of deposit and investment products, personal finance and financial wellness services, lending, student loan refinancing, mortgage and home equity, credit card, treasury services, and business advisory services. In addition, wealth management and investment services are offered to assist non-profit and high-net-worth clients with their banking, trust, portfolio management, life insurance, charitable giving, and related needs. Commercial Bank The Commercial Bank consists of the Commercial and Institutional operating segments. The Commercial operating segment is a full-service, commercial banking platform that focuses primarily on serving the borrowing, cash management, and capital markets needs of middle market clients within Key’s 15-state branch footprint. It is also a significant, national, commercial real estate lender and third-party servicer of commercial mortgage loans and special servicer of CMBS. The Institutional operating segment operates nationally in providing lending, equipment financing, and banking products and services to large corporate and institutional clients. The industry coverage and product teams have established expertise in the following sectors: Consumer, Energy, Healthcare, Industrial, Public Sector, Real Estate, and Technology. The operating segment includes the KBCM platform which provides a broad suite of capital markets products and services including syndicated finance, debt and equity underwriting, derivatives, foreign exchange, debt and M&A advisory, public finance, and fixed income and equity sales and trading services . Other Other includes various corporate treasury activities such as management of our investment securities portfolio, long-term debt, short-term liquidity and funding activities, and balance sheet risk management, our principal investing unit, restructuring charges, and various exit portfolios as well as reconciling items which primarily represents the unallocated portion of nonearning assets of corporate support functions. Charges related to the funding of these assets are part of net interest income and are allocated to the business segments through noninterest expense. Reconciling items also include intercompany eliminations and certain items that are not allocated to the business segments because they do not reflect their normal operations. The development and application of the methodologies that we use to allocate items among our business segments is a dynamic process. Accordingly, financial results may be revised periodically to reflect enhanced alignment of expense base allocations drivers, changes in the risk profile of a particular business, or changes in our organizational structure. The table below shows selected financial data for our business segments for the three-month periods ended March 31, 2023, and March 31, 2022. Capital is assigned to each business segment based on a combination of regulatory and economic equity. Three months ended March 31, Consumer Bank Commercial Bank Other Total Key Dollars in millions 2023 2022 2023 2022 2023 2022 2023 2022 SUMMARY OF OPERATIONS Net interest income (TE) $ 614 $ 543 $ 475 $ 414 $ 17 $ 63 $ 1,106 $ 1,020 Noninterest income 228 256 366 394 14 26 608 676 Total revenue (TE) (a) 842 799 841 808 31 89 1,714 1,696 Provision for credit losses 60 43 80 41 (1) (1) 139 83 Depreciation and amortization expense 21 21 23 31 17 18 61 70 Other noninterest expense 654 642 405 383 56 (25) 1,115 1,000 Income (loss) from continuing operations before income taxes (TE) 107 93 333 353 (41) 97 399 543 Allocated income taxes and TE adjustments 26 22 69 69 (7) 5 88 96 Income (loss) from continuing operations 81 71 264 284 (34) 92 311 447 Income (loss) from discontinued operations, net of taxes — — — — 1 1 1 1 Net income (loss) 81 71 264 284 (33) 93 312 448 Less: Net income (loss) attributable to noncontrolling interests — — — — — — — — Net income (loss) attributable to Key $ 81 $ 71 $ 264 $ 284 $ (33) $ 93 $ 312 $ 448 AVERAGE BALANCES (b) Loans and leases $ 43,086 $ 38,654 $ 76,306 $ 64,684 $ 445 $ 424 $ 119,837 $ 103,762 Total assets (a) 45,911 41,786 85,852 74,816 59,088 65,987 190,851 182,589 Deposits 84,492 91,516 52,185 57,241 6,728 1,406 143,405 150,163 OTHER FINANCIAL DATA Net loan charge-offs (b) $ 24 $ 22 $ 21 $ 11 $ — $ — $ 45 $ 33 Return on average allocated equity (b) 8.98 % 8.02 % 10.39 % 13.26 % 95.76 % 8.29 % 9.13 % 10.80 % Return on average allocated equity 8.98 8.02 10.39 13.26 92.94 8.38 9.16 10.83 Average full-time equivalent employees (c) 8,046 7,885 2,517 2,416 7,657 6,808 18,220 17,109 (a) Substantially all revenue generated by our major business segments is derived from clients that reside in the United States. Substantially all long-lived assets, including premises and equipment, capitalized software, and goodwill held by our major business segments, are located in the United States. (b) From continuing operations. (c) The number of average full-time equivalent employees was not adjusted for discontinued operations.

Revenue from Contracts with Cus

Revenue from Contracts with Customers	3 Months Ended
	Mar. 31, 2023
Revenue from Contract with Customer [Abstract]
Revenue from Contracts with Customers	21. Revenue from Contracts with Customers The following table represents a disaggregation of revenue from contracts with customers, by business segment, for the three-month periods ended March 31, 2023, and March 31, 2022. The development and application of the methodologies that we use to allocate items among our business segments is a dynamic process. Accordingly, financial results may be revised periodically to reflect enhanced alignment of expense base allocations drivers, changes in the risk profile of a particular business, or changes in our organizational structure. Three months ended March 31, 2023 Three months ended March 31, 2022 Dollars in millions Consumer Bank Commercial Bank Total Contract Revenue Consumer Bank Commercial Bank Total Contract Revenue NONINTEREST INCOME Trust and investment services income $ 100 $ 16 $ 116 $ 106 $ 18 $ 124 Investment banking and debt placement fees — 113 113 — 109 109 Services charges on deposit accounts 39 28 67 55 36 91 Cards and payments income 45 32 77 42 36 78 Other noninterest income 2 — 2 2 — 2 Total revenue from contracts with customers $ 186 $ 189 $ 375 $ 205 $ 199 $ 404 Other noninterest income (a) $ 219 $ 246 Noninterest income from Other (b) 14 26 Total noninterest income $ 608 $ 676 (a) Noninterest income considered earned outside the scope of contracts with customers. (b) Other includes other segments that consists of corporate treasury, our principal investing unit, and various exit portfolios as well as reconciling items which primarily represents the unallocated portion of nonearning assets of corporate support functions. Charges related to the funding of these assets are part of net interest income and are allocated to the business segments through noninterest expense. Reconciling items also includes intercompany eliminations and certain items that are not allocated to the business segments because they do not reflect their normal operations. Refer to Note 20 (“Business Segment Reporting”) for more information. We had no material contract assets or contract liabilities as of March 31, 2023, and March 31, 2022.

Basis of Presentation and Acc_2

Basis of Presentation and Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Consolidation	The consolidated financial statements include the accounts of KeyCorp and its subsidiaries. All significant intercompany accounts and transactions have been eliminated in consolidation. Some previously reported amounts related to derivative valuations and reserves have been reclassified from Other Income to Corporate Services Income to conform to current reporting practices. The consolidated financial statements include any voting rights entities in which we have a controlling financial interest. In accordance with the applicable accounting guidance for consolidations, we consolidate a VIE if we have: (i) a variable interest in the entity; (ii) the power to direct activities of the VIE that most significantly affect the entity’s economic performance; and (iii) the obligation to absorb losses of the entity or the right to receive benefits from the entity that could potentially be significant to the VIE (i.e., we are considered to be the primary beneficiary). Variable interests can include equity interests, subordinated debt, derivative contracts, leases, service agreements, guarantees, standby letters of credit, loan commitments, and other contracts, agreements, and financial instruments. See Note 11 (“Variable Interest Entities”) for information on our involvement with VIEs. We use the equity method to account for unconsolidated investments in voting rights entities or VIEs if we have significant influence over the entity’s operating and financing decisions (usually defined as a voting or economic interest of 20% to 50%, but not controlling). Unconsolidated investments in voting rights entities or VIEs in which we have a voting or economic interest of less than 20% are carried at the cost measurement alternative or at fair value. Investments held by our registered broker-dealer and investment company subsidiaries (principal investing entities and Real Estate Capital line of business) are carried at fair value. The unaudited consolidated interim financial statements reflect all adjustments of a normal recurring nature and disclosures that are necessary for a fair presentation of the results for the interim periods presented. The results of operations for the interim period are not necessarily indicative of the results of operations to be expected for the full year. The interim financial statements should be read in conjunction with the audited consolidated financial statements and related notes included in our 2022 Form 10-K.
Subsequent Events	In preparing these financial statements, subsequent events were evaluated through the time the financial statements were issued. Financial statements are considered issued when they are widely distributed to all shareholders and other financial statement users or filed with the SEC.
Accounting Guidance Adopted in 2023	Accounting Guidance Adopted in 2023 Standard Date of Adoption Description Effect on Financial Statements or ASU 2021-08, January 1, 2023 Early adoption is At the acquisition date, an acquirer must account for any acquired revenue contracts in The guidance should be applied on a prospective basis. The adoption of this guidance did not have a material impact on Key’s financial condition or results of operations. ASU 2022-01, January 1, 2023 Early adoption is This guidance allows entities to apply the same portfolio hedging method to both The guidance should be applied on a prospective, retrospective or modified retrospective basis depending on the amendment. The adoption of this guidance did not have a material impact on Key’s financial condition or results of operations. ASU 2022-02, January 1, 2023 Early adoption is The amendments eliminate TDR guidance and Entities must disclose current-period gross write-offs on an amortized cost basis by credit The guidance should be applied on a prospective basis except for amendments related to recognition and measurement of TDRs, where a modified retrospective transition method is optional. As part of the adoption of this guidance, Key elected to discontinue use of a discounted cash flow (DCF) methodology and apply its portfolio-based allowance approach to non-collateral dependent modified loans. The adoption did not result in a material impact on Key’s financial condition or results of operations. Additionally, disclosures for gross charges-offs and loan modifications made to borrowers experiencing financial difficulty have been included in Note 4 (Asset Quality).
Loans	Loans Effective January 1, 2023, we adopted the provisions of ASU 2022-02, Financial Instruments —Credit Losses (Topic 326), which eliminated the accounting for troubled debt restructurings while expanding loan modification and vintage disclosure requirements. Under this guidance we assess all loan modifications to determine whether one is granted to a borrower experiencing financial difficulty, regardless of whether the modification loan terms include a concession. Modifications granted to borrowers experiencing financial difficulty may be in the form an interest rate reduction, payment delay, other modifications, or some combination thereof. A borrower is considered to be experiencing financial difficulty when there is significant doubt about the borrower’s ability to make required payments on the loan or to get equivalent financing from another creditor at a market rate for a similar loan. Prior to the adoption of ASU 2022-02, a TDR occurred when a loan to a borrower experiencing financial difficulty was restricted with a concession provided that a creditor would not otherwise consider.
Nonperforming Loans	Nonperforming Loans Nonperforming loans are loans for which we do not accrue interest income and may include both commercial and consumer loans and leases, modified loans to borrowers experiencing financial difficulty, and nonaccruing TDR loans prior to the adoption of ASU 2022-02. Nonperforming loans do not include loans held for sale. Once a loan is designated nonaccrual, the interest accrued but not collected is reversed against interest income, and payments subsequently received are applied to principal until qualifying for return to accrual.
Allowance for Loan and Lease Losses	Allowance for Loan and Lease Losses We estimate the ALLL using relevant available information, from internal and external sources, relating to past events, current conditions, and reasonable and supportable forecasts. The ALLL is measured on a collective (pool) basis when similar risk characteristics exist. Our portfolio segments include commercial and consumer. Each of these two segments comprises multiple loan classes. Classes are characterized by similarities in initial measurement, risk attributes, and the manner in which we monitor and assess credit risk. The commercial segment is composed of commercial and industrial, commercial real estate, and commercial lease financing loan classes. The consumer lending segment is composed of residential mortgage, home equity, consumer direct, credit card, student lending and consumer indirect loan classes. The ALLL represents our current estimate of lifetime credit losses inherent in our loan portfolio at the balance sheet date. In determining the ALLL, we estimate expected future losses for the loan's entire contractual term adjusted for expected prepayments when appropriate. The contractual term excludes expected extensions, renewals, and modifications. The ALLL is the sum of three components: (i) asset specific/ individual loan reserves; (ii) quantitative (formulaic or pooled) reserves; and (iii) qualitative (judgmental) reserves. Asset Specific / Individual Component Loans that do not share risk characteristics are evaluated on an individual basis. Loans evaluated individually are not included in the collective evaluation. We have elected to apply the practical expedient to measure expected credit losses of a collateral dependent asset using the fair value of the collateral, less any costs to sell, when foreclosure is not probable, when repayment of the loan is expected to be provided substantially through the operation or sale of the collateral, and the borrower is experiencing financial difficulty. Individual reserves are determined as follows: • For commercial non-accruing loans greater than or equal to a defined dollar threshold, individual reserves are determined based on an analysis of the present value of the loan's expected future cash flows or the fair value of the collateral less costs to sell. • For commercial non-accruing loans below the defined dollar threshold, an established LGD percentage is multiplied by the loan balance and the results are aggregated for purposes of measuring specific reserve impairment. • The population of individually assessed consumer loans includes loans deemed collateral dependent. These loans are written down based on the collateral's fair market value less costs to sell. Quantitative Component We use a non-DCF factor-based approach to estimate expected credit losses that include component PD/LGD/EAD models as well as less complex estimation methods for smaller loan portfolios. • PD: This component model is used to estimate the likelihood that a borrower will cease making payments as agreed. The major contributors to this are the borrower credit attributes and macro-economic trends. The objective of the PD model is to produce default likelihood forecasts based on the observed loan-level information and projected paths of macroeconomic variables. • LGD: This component model is used to estimate the loss on a loan once a loan is in default. • EAD: Estimates the loan balance at the time the borrower stops making payments. For all term loans, an amortization based formulaic approach is used for account level EAD estimates. We calculate EAD using a portfolio specific method in each of our revolving product portfolios. For line products that are unconditionally cancellable, the balances will either use a paydown curve or be held flat through the life of the loan. Qualitative Component The ALLL also includes identified qualitative factors related to idiosyncratic risk factors, changes in current economic conditions that may not be reflected in quantitatively derived results, and other relevant factors to ensure the ALLL reflects our best estimate of current expected credit losses. While our reserve methodologies strive to reflect all relevant risk factors, there continues to be uncertainty associated with, but not limited to, potential imprecision in the estimation process due to the inherent time lag of obtaining information and normal variations between estimates and actual outcomes. We provide additional reserves that are designed to provide coverage for losses attributable to such risks. The ALLL also includes factors that may not be directly measured in the determination of individual or collective reserves. Such qualitative factors may include: • The nature and volume of the institution’s financial assets; • The existence, growth, and effect of any concentrations of credit; • The volume and severity of past due financial assets, the volume of nonaccrual assets, and the volume and severity of adversely classified or graded assets; • The value of the underlying collateral for loans that are not collateral dependent; • The institution’s lending policies and procedures, including changes in underwriting standards and practices for collections, write-offs, and recoveries; • The quality of the institution’s credit review function; • The experience, ability, and depth of the institution’s lending, investment, collection, and other relevant management and staff; • The effect of other external factors such as the regulatory, legal and technological environments; competition; and events such as natural disasters; and • Actual and expected changes in international, national, regional, and local economic and business conditions and developments in which the institution operates that affect the collectability of financial assets.
Income Taxes	Income Taxes Deferred tax assets and liabilities are determined based on temporary differences between financial statement asset and liability amounts and their respective tax bases and are measured using enacted tax laws and rates that are expected to apply in the periods in which the deferred tax assets or liabilities are expected to be realized. Deferred tax assets are also recorded for any tax attributes, such as tax credit and net operating loss carryforwards. The net balance of deferred tax assets and liabilities is reported in “Accrued income and other assets” or “Accrued expense and other liabilities” in the consolidated balance sheets, as appropriate. Subsequent changes in the tax laws require adjustment to these assets and liabilities with the cumulative effect included in the provision for income taxes for the period in which the change is enacted. A valuation allowance is recognized for a deferred tax asset if, based on the weight of available evidence, it is more-likely-than-not that some portion or all of the deferred tax asset will not be realized. We use the proportional amortization method for LIHTC investments, whereby the associated investment tax credits are recognized as a reduction to tax expense. Certain federal tax credits that are nonrefundable and transferable under applicable regulations are accounted for as government grants and recorded as a reduction to the amortized cost or net investment in the applicable asset generating the credit, generally within “Accrued income and other assets” or “Loans, net of unearned income”. Amounts are amortized through depreciation or as an adjustment to yield over the estimated life of the asset. Any gain or loss on the transfer of a tax credit is recorded within “Other income”.

Basis of Presentation and Acc_3

Basis of Presentation and Accounting Policies (Tables)	3 Months Ended
	Mar. 31, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Schedule of New Accounting Pronouncements and Changes in Accounting Principles	Standard Date of Adoption Description Effect on Financial Statements or ASU 2021-08, January 1, 2023 Early adoption is At the acquisition date, an acquirer must account for any acquired revenue contracts in The guidance should be applied on a prospective basis. The adoption of this guidance did not have a material impact on Key’s financial condition or results of operations. ASU 2022-01, January 1, 2023 Early adoption is This guidance allows entities to apply the same portfolio hedging method to both The guidance should be applied on a prospective, retrospective or modified retrospective basis depending on the amendment. The adoption of this guidance did not have a material impact on Key’s financial condition or results of operations. ASU 2022-02, January 1, 2023 Early adoption is The amendments eliminate TDR guidance and Entities must disclose current-period gross write-offs on an amortized cost basis by credit The guidance should be applied on a prospective basis except for amendments related to recognition and measurement of TDRs, where a modified retrospective transition method is optional. As part of the adoption of this guidance, Key elected to discontinue use of a discounted cash flow (DCF) methodology and apply its portfolio-based allowance approach to non-collateral dependent modified loans. The adoption did not result in a material impact on Key’s financial condition or results of operations. Additionally, disclosures for gross charges-offs and loan modifications made to borrowers experiencing financial difficulty have been included in Note 4 (Asset Quality).

Earnings Per Common Share (Tabl

Earnings Per Common Share (Tables)	3 Months Ended
	Mar. 31, 2023
Earnings Per Share [Abstract]
Schedule of Basic and Diluted Earnings Per Common Share	Our basic and diluted earnings per Common Share are calculated as follows: Three months ended March 31, Dollars in millions, except per share amounts 2023 2022 EARNINGS Income (loss) from continuing operations $ 311 $ 447 Less: Net income (loss) attributable to noncontrolling interests — — Income (loss) from continuing operations attributable to Key 311 447 Less: Dividends on Preferred Stock 36 27 Income (loss) from continuing operations attributable to Key common shareholders 275 420 Income (loss) from discontinued operations, net of taxes 1 1 Net income (loss) attributable to Key common shareholders $ 276 $ 421 WEIGHTED-AVERAGE COMMON SHARES Weighted-average Common Shares outstanding (000) 926,490 922,941 Effect of Common Share options and other stock awards 7,314 10,692 Weighted-average Common Shares and potential Common Shares outstanding (000) (a) 933,804 933,634 EARNINGS PER COMMON SHARE Income (loss) from continuing operations attributable to Key common shareholders $ .30 $ .45 Income (loss) from discontinued operations, net of taxes — — Net income (loss) attributable to Key common shareholders (b) .30 .46 Income (loss) from continuing operations attributable to Key common shareholders — assuming dilution $ .30 $ .45 Income (loss) from discontinued operations, net of taxes — assuming dilution — — Net income (loss) attributable to Key common shareholders — assuming dilution (b) .30 .45 (a) Assumes conversion of Common Share options and other stock awards and/or convertible preferred stock, as applicable. (b) EPS may not foot due to rounding.

Loan Portfolio (Tables)

Loan Portfolio (Tables)	3 Months Ended
	Mar. 31, 2023
Loans Receivables [Abstract]
Schedule of Loans by Category	Dollars in millions March 31, 2023 December 31, 2022 Commercial and industrial (b) $ 60,565 $ 59,647 Commercial real estate: Commercial mortgage 16,348 16,352 Construction 2,590 2,530 Total commercial real estate loans 18,938 18,882 Commercial lease financing (c) 3,763 3,936 Total commercial loans 83,266 82,465 Residential — prime loans: Real estate — residential mortgage 21,632 21,401 Home equity loans 7,706 7,951 Total residential — prime loans 29,338 29,352 Consumer direct loans 6,359 6,508 Credit cards 969 1,026 Consumer indirect loans 39 43 Total consumer loans 36,705 36,929 Total loans (d) $ 119,971 $ 119,394 (a) Accrued interest of $487 million and $417 million at March 31, 2023, and December 31, 2022, respectively, presented in "Accrued income and other assets" on the Consolidated Balance Sheets is excluded from the amortized cost basis disclosed in this table. (b) Loan balances include $185 million and $172 million of commercial credit card balances at March 31, 2023, and December 31, 2022, respectively. (c) Commercial lease financing includes receivables held as collateral for a secured borrowing of $6 million and $8 million at March 31, 2023, and December 31, 2022, respectively. Principal reductions are based on the cash payments received from these related receivables. Additional information pertaining to this secured borrowing is included in Note 20 (“Long-Term Debt”) beginning on page 164 of our 2022 Form 10-K.

Asset Quality (Tables)

Asset Quality (Tables)	3 Months Ended
	Mar. 31, 2023
Credit Loss [Abstract]
Schedule of Financing Receivable, Allowance for Credit Loss	. The changes in the ALLL by loan category for the periods indicated are as follows: Three months ended March 31, 2023: Dollars in millions December 31, 2022 Provision Charge-offs Recoveries March 31, 2023 Commercial and Industrial $ 601 $ 31 $ (35) $ 8 $ 605 Commercial real estate: Real estate — commercial mortgage 203 20 (5) — 218 Real estate — construction 28 — — — 28 Total commercial real estate loans 231 20 (5) — 246 Commercial lease financing 32 (1) 1 1 33 Total commercial loans 864 50 (39) 9 884 Real estate — residential mortgage 196 15 — 1 212 Home equity loans 98 (2) (1) 1 96 Consumer direct loans 111 14 (11) 2 116 Credit cards 66 13 (9) 1 71 Consumer indirect loans 2 (2) — 1 1 Total consumer loans 473 38 (21) 6 496 Total ALLL — continuing operations 1,337 88 (a) (60) 15 1,380 Discontinued operations 21 (1) (1) — 19 Total ALLL — including discontinued operations $ 1,358 $ 87 $ (61) $ 15 $ 1,399 (a) Excludes a provision for losses on lending-related commitments of $51 million. Three months ended March 31, 2022: Dollars in millions December 31, 2021 Provision Charge-offs Recoveries March 31, 2022 Commercial and Industrial $ 445 $ 63 $ (30) $ 11 $ 489 Commercial real estate: Real estate — commercial mortgage 182 (7) (4) 1 172 Real estate — construction 29 (4) — — 25 Total commercial real estate loans 211 (11) (4) 1 197 Commercial lease financing 32 1 (2) — 31 Total commercial loans 688 53 (36) 12 717 Real estate — residential mortgage 95 12 1 — 108 Home equity loans 110 (6) (1) 1 104 Consumer direct loans 105 11 (7) 2 111 Credit cards 61 7 (7) 2 63 Consumer indirect loans 2 — (1) 1 2 Total consumer loans 373 24 (15) 6 388 Total ALLL — continuing operations 1,061 77 (a) (51) 18 1,105 Discontinued operations 28 1 (2) — 27 Total ALLL — including discontinued operations $ 1,089 $ 78 $ (53) $ 18 $ 1,132 (a) Excludes a provision for losses on lending-related commitments of $6 million.
Schedule of Significant Macroeconomic Variables of Loan Portfolios	The following table discloses key macroeconomic variables for each loan portfolio. Segment Portfolio Key Macroeconomic Variables (a) Commercial Commercial and industrial BBB corporate bond rate (spread), fixed investment, business bankruptcies, GDP, industrial production, and unemployment rate, Producer Price Index Commercial real estate Property & real estate price indices, unemployment rate, business bankruptcies, GDP, SOFR Commercial lease financing BBB corporate bond rate (spread), GDP, and unemployment rate Consumer Real estate — residential mortgage GDP, home price index, unemployment rate, and 30 year mortgage rate Home equity Home price index, unemployment rate, and 30 year mortgage rate Consumer direct Unemployment rate and U.S. household income Consumer indirect Unemployment rate Credit cards Unemployment rate and U.S. household income Discontinued operations Unemployment rate (a) Variables include all transformations and interactions with other risk drivers. Additionally, variables may have varying impacts at different points in the economic cycle.
Schedule of Financing Receivable Credit Quality Indicators	Credit Risk Profile by Creditworthiness Category and Vintage (a) As of March 31, 2023 Term Loans Revolving Loans Amortized Cost Basis Revolving Loans Converted to Term Loans Amortized Cost Basis Amortized Cost Basis by Origination Year and Internal Risk Rating Dollars in millions 2023 2022 2021 2020 2019 Prior Total Commercial and Industrial Risk Rating: Pass $ 1,605 $ 11,348 $ 7,729 $ 3,365 $ 2,544 $ 4,593 $ 26,824 $ 165 $ 58,173 Criticized (Accruing) 24 106 416 143 152 407 951 23 2,222 Criticized (Nonaccruing) 4 34 3 6 3 33 87 — 170 Total commercial and industrial 1,633 11,488 8,148 3,514 2,699 5,033 27,862 188 60,565 Current period gross write-offs 1 1 4 1 — 11 17 — 35 Real estate — commercial mortgage Risk Rating: Pass 445 4,602 3,663 959 1,776 3,218 1,087 88 15,838 Criticized (Accruing) — 16 63 45 85 209 33 — 451 Criticized (Nonaccruing) — — — 1 1 26 31 — 59 Total real estate — commercial mortgage 445 4,618 3,726 1,005 1,862 3,453 1,151 88 16,348 Current period gross write-offs — — — — — 3 2 — 5 Real estate — construction Risk Rating: Pass 13 774 947 376 231 114 11 6 2,472 Criticized (Accruing) — 5 — 17 43 51 — 2 118 Criticized (Nonaccruing) — — — — — — — — — Total real estate — construction 13 779 947 393 274 165 11 8 2,590 Current period gross write-offs — — — — — — — — — Commercial lease financing Risk Rating: Pass 131 982 690 470 427 1,000 — — 3,700 Criticized (Accruing) — 23 5 10 10 14 — — 62 Criticized (Nonaccruing) — — — — — 1 — — 1 Total commercial lease financing 131 1,005 695 480 437 1,015 — 3,763 Current period gross write-offs — — — — — (1) — — (1) Total commercial loans $ 2,222 $ 17,890 $ 13,516 $ 5,392 $ 5,272 $ 9,666 $ 29,024 $ 284 $ 83,266 Total commercial loan current period gross write-offs $ 1 $ 1 $ 4 $ 1 $ — $ 13 $ 19 $ — $ 39 As of December 31, 2022 Term Loans Revolving Loans Amortized Cost Basis Revolving Loans Converted to Term Loans Amortized Cost Basis Amortized Cost Basis by Origination Year and Internal Risk Rating Dollars in millions 2022 2021 2020 2019 2018 Prior Total Commercial and Industrial Risk Rating: Pass $ 11,580 $ 8,636 $ 3,540 $ 2,839 $ 1,787 $ 3,307 $ 25,565 $ 138 $ 57,392 Criticized (Accruing) 40 357 131 160 227 205 936 25 2,081 Criticized (Nonaccruing) 34 2 5 4 22 20 87 — 174 Total commercial and industrial 11,654 8,995 3,676 3,003 2,036 3,532 26,588 163 59,647 Real estate — commercial mortgage Risk Rating: Pass 4,786 3,817 992 1,853 788 2,578 1,068 67 15,949 Criticized (Accruing) 6 13 20 48 73 175 47 — 382 Criticized (Nonaccruing) — — 1 1 1 15 3 — 21 Total real estate — commercial mortgage 4,792 3,830 1,013 1,902 862 2,768 1,118 67 16,352 Real estate — construction Risk Rating: Pass 698 895 445 262 107 48 1 — 2,456 Criticized (Accruing) 5 1 5 32 25 4 — 2 74 Criticized (Nonaccruing) — — — — — — — — — Total real estate — construction 703 896 450 294 132 52 1 2 2,530 Commercial lease financing Risk Rating: Pass 1,039 743 509 467 174 947 — — 3,879 Criticized (Accruing) 15 1 9 12 9 10 — — 56 Criticized (Nonaccruing) — — — — — 1 — — 1 Total commercial lease financing 1,054 744 518 479 183 958 — — 3,936 Total commercial loans $ 18,203 $ 14,465 $ 5,657 $ 5,678 $ 3,213 $ 7,310 $ 27,707 $ 232 $ 82,465 (a) Accrued intere st of $353 million a nd $314 million as of March 31, 2023, and December 31, 2022, respectively, presented in Other Assets on the Consolidated Balance Sheets, was excluded from the amortized cost basis disclosed in these tables. Consumer Credit Exposure Credit Risk Profile by FICO Score and Vintage (a) As of March 31, 2023 Term Loans Revolving Loans Amortized Cost Basis Revolving Loans Converted to Term Loans Amortized Cost Basis Amortized Cost Basis by Origination Year and FICO Score Dollars in millions 2023 2022 2021 2020 2019 Prior Total Real estate — residential mortgage FICO Score: 750 and above $ 332 $ 5,412 $ 8,654 $ 2,546 $ 614 $ 1,015 $ — $ — $ 18,573 660 to 749 114 1,031 895 277 110 272 — — 2,699 Less than 660 5 51 37 17 18 143 — — 271 No Score — 63 1 1 — 23 1 — 89 Total real estate — residential mortgage 451 6,557 9,587 2,841 742 1,453 1 — 21,632 Current period gross write-offs — — — — — — — — — Home equity loans FICO Score: 750 and above — 128 1,251 628 172 578 2,150 387 5,294 660 to 749 5 76 276 186 77 206 948 127 1,901 Less than 660 — 11 30 27 17 90 294 34 503 No Score 1 — — — — 2 5 — 8 Total home equity loans 6 215 1,557 841 266 876 3,397 548 7,706 Current period gross write-offs — — — — — — — — — Consumer direct loans FICO Score: 750 and above 81 1,296 1,600 780 332 133 96 — 4,318 660 to 749 71 449 391 201 106 60 196 — 1,474 Less than 660 6 64 60 31 20 14 57 — 252 No Score 21 50 27 17 11 26 163 — 315 Total consumer direct loans 179 1,859 2,078 1,029 469 233 512 — 6,359 Current period gross write-offs — 2 2 2 2 1 3 — 12 Credit cards FICO Score: 750 and above — — — — — — 478 — 478 660 to 749 — — — — — — 395 — 395 Less than 660 — — — — — — 95 — 95 No Score — — — — — — 1 — 1 Total credit cards — — — — — — 969 — 969 Current period gross write-offs — — — — — — 9 — 9 Consumer indirect loans FICO Score: 750 and above — — 1 — — 19 — — 20 660 to 749 — — — — — 14 — — 14 Less than 660 — — — — — 5 — — 5 No Score — — — — — — — — — Total consumer indirect loans — — 1 — — 38 — — 39 Current period gross write-offs — — — — — — — — — Total consumer loans $ 636 $ 8,631 $ 13,223 $ 4,711 $ 1,477 $ 2,600 $ 4,879 $ 548 $ 36,705 Total consumer loan current period gross write-offs $ — $ 2 $ 2 $ 2 $ 2 $ 1 $ 12 $ — $ 21 As of December 31, 2022 Term Loans Revolving Loans Amortized Cost Basis Revolving Loans Converted to Term Loans Amortized Cost Basis Amortized Cost Basis by Origination Year and FICO Score Dollars in millions 2022 2021 2020 2019 2018 Prior Total Real estate — residential mortgage FICO Score: 750 and above $ 5,205 $ 8,702 $ 2,584 $ 636 $ 64 $ 978 $ — $ — $ 18,169 660 to 749 1,286 919 282 106 28 260 — — 2,881 Less than 660 41 42 17 14 15 130 — — 259 No Score 62 1 1 1 1 25 1 — 92 Total real estate — residential mortgage 6,594 9,664 2,884 757 108 1,393 1 — 21,401 Home equity loans FICO Score: 750 and above 146 1,044 736 207 74 617 2,238 398 5,460 660 to 749 83 291 194 79 32 187 974 126 1,966 Less than 660 11 31 25 17 10 81 300 37 512 No Score 7 — — — — 2 4 — 13 Total home equity loans 247 1,366 955 303 116 887 3,516 561 7,951 Consumer direct loans FICO Score: 750 and above 1,291 1,632 811 351 45 97 102 — 4,329 660 to 749 526 434 229 120 26 41 206 — 1,582 Less than 660 58 63 32 23 7 9 57 — 249 No Score 59 32 22 11 9 22 193 — 348 Total consumer direct loans 1,934 2,161 1,094 505 87 169 558 — 6,508 Credit cards FICO Score: 750 and above — — — — — — 524 — 524 660 to 749 — — — — — — 402 — 402 Less than 660 — — — — — — 99 — 99 No Score — — — — — — 1 — 1 Total credit cards — — — — — — 1,026 — 1,026 Consumer indirect loans FICO Score: 750 and above — 2 — — — 19 — — 21 660 to 749 — — — — — 15 — — 15 Less than 660 — — — — — 7 — — 7 No Score — — — — — — — — — Total consumer indirect loans — 2 — — — 41 — — 43 Total consumer loans $ 8,775 $ 13,193 $ 4,933 $ 1,565 $ 311 $ 2,490 $ 5,101 $ 561 $ 36,929 (a) Accrued intere st of $134 million and $103 million as of March 31, 2023, and December 31, 2022, respectively, presented in Other Assets on the Consolidated Balance Sheets, was excluded from the amortized cost basis disclosed in this table.
Schedule of Past Due Loans Including Current Loans	The following aging analysis of past due and current loans as of March 31, 2023, and December 31, 2022, provides further information regarding Key’s credit exposure. Aging Analysis of Loan Portfolio (a) As of March 31, 2023 Current (b) 30-59 Days Past Due (b) 60-89 Days Past Due (b) 90 and Greater Days Past Due (b) Non-performing Total Past Due and Non-performing Loans (b) Total Loans (c) Dollars in millions LOAN TYPE Commercial and industrial $ 60,299 $ 29 $ 44 $ 23 $ 170 $ 266 $ 60,565 Commercial real estate: Commercial mortgage 16,265 13 4 7 59 83 16,348 Construction 2,590 — — — — — 2,590 Total commercial real estate loans 18,855 13 4 7 59 83 18,938 Commercial lease financing 3,755 1 4 2 1 8 3,763 Total commercial loans $ 82,909 $ 43 $ 52 $ 32 $ 230 $ 357 $ 83,266 Real estate — residential mortgage $ 21,548 $ 5 $ 2 $ 2 $ 75 $ 84 $ 21,632 Home equity loans 7,565 24 7 6 104 141 7,706 Consumer direct loans 6,329 13 7 7 3 30 6,359 Credit cards 948 6 4 8 3 21 969 Consumer indirect loans 37 1 — — 1 2 39 Total consumer loans $ 36,427 $ 49 $ 20 $ 23 $ 186 $ 278 $ 36,705 Total loans $ 119,336 $ 92 $ 72 $ 55 $ 416 $ 635 $ 119,971 (a) Amounts in table represent amortized cost and exclude loans held for sale. (b) Accrued inter est of $487 million p resented in “Accrued income and other assets” on the Consolidated Balance Sheets is excluded from the amortized cost basis disclosed in this table. (c) Net of unearned income, net of deferred fees and costs, and unamortized discounts and premiums. As of December 31, 2022 Current (b) 30-59 Days Past Due (b) 60-89 Days Past Due (b) 90 and Greater Days Past Due (b) Non-performing Loans Total Past Due and Non-performing Loans (b) Total Loans (c) Dollars in millions LOAN TYPE Commercial and industrial $ 59,366 $ 43 $ 33 $ 31 $ 174 $ 281 $ 59,647 Commercial real estate: Commercial mortgage 16,305 16 2 8 21 47 16,352 Construction 2,530 — — — — — 2,530 Total commercial real estate loans 18,835 16 2 8 21 47 18,882 Commercial lease financing 3,928 3 1 3 1 8 3,936 Total commercial loans $ 82,129 $ 62 $ 36 $ 42 $ 196 $ 336 $ 82,465 Real estate — residential mortgage $ 21,307 $ 13 $ 3 $ 1 $ 77 $ 94 $ 21,401 Home equity loans 7,804 27 8 5 107 147 7,951 Consumer direct loans 6,478 15 7 5 3 30 6,508 Credit cards 1,007 5 4 7 3 19 1,026 Consumer indirect loans 42 — — — 1 1 43 Total consumer loans $ 36,638 $ 60 $ 22 $ 18 $ 191 $ 291 $ 36,929 Total loans $ 118,767 $ 122 $ 58 $ 60 $ 387 $ 627 $ 119,394 (a) Amounts in table represent amortized cost and exclude loans held for sale. (b) Accrued interest of $417 million presented in “Accrued income and other assets” on the Consolidated Balance Sheets is excluded from the amortized cost basis disclosed in this table. (c) Net of unearned income, net of deferred fees and costs, and unamortized discounts and premiums.
Schedule of Modified Financing Receivables	The following table shows the amortized cost basis at the end of the reporting period of the loans modified to borrowers experiencing financial difficult, disaggregated by class of loan and type of concession granted. The table does not include those modifications that only resulted in an insignificant payment delay. The table does not include consumer loans that are still within a trial modification period. Trial modifications may be done for consumer borrowers where a trial payment plan period is offered in advance of a permanent loan modification. As of March 31, 2023, there were 136 loans totaling $17 million in a trial modification period. Commitments outstanding to lend additional funds to borrowers experiencing financial difficulty whose loans were modified were $23 million at March 31, 2023. As of March 31, 2023 Interest Rate Reduction Term Extension Other Combination Total Dollars in millions Amortized Cost Basis Amortized Cost Basis Amortized Cost Basis Amortized Cost Basis Amortized Cost Basis % of Total Loan Type LOAN TYPE Commercial and Industrial $ — $ 79 $ 1 $ 4 $ 84 0.14 % Commercial real estate: Commercial mortgage — 4 — — 4 0.02 Construction — — — — — — Total commercial real estate loans — 4 — — 4 0.02 Commercial lease financing — — — — — — Total commercial loans $ — $ 83 $ 1 $ 4 $ 88 0.11 % Real estate — residential mortgage — — — 1 1 — Home equity loans — — — 2 2 0.03 Consumer direct loans — — — 1 1 0.02 Credit cards — — — 1 1 0.10 Consumer indirect loans — — — — — — Total consumer loans — — — 5 5 0.01 Total loans $ — $ 83 $ 1 $ 9 $ 93 0.08 % The following table summarizes the financial impacts of loan modifications made to specific loans during the three months ended March 31, 2023. Three months ended March 31, 2023 Weighted-average Interest Rate Reduction Weighted-average Term Extension (in years) LOAN TYPE Commercial and Industrial — % 1.03 Commercial mortgage — % 1.42 Real estate — residential mortgage 1.33 % 6.68 Home equity loans 3.72 % 2.90 As of March 31, 2023 Current 30-89 90 and Total Dollars in millions LOAN TYPE Commercial and Industrial $ 80 $ 3 $ 1 $ 84 Commercial real estate Commercial mortgage 4 — — 4 Construction — — — — Total commercial real estate loans 84 3 1 88 Commercial lease financing — — — — Total commercial loans 84 3 1 88 Real estate — residential mortgage 1 — — 1 Home equity loans 2 — — 2 Consumer direct loans 1 — — 1 Credit cards 1 — — 1 Consumer indirect loans — — — — Total consumer loans $ 5 $ — $ — $ 5 Total loans $ 89 $ 3 $ 1 $ 93 A further breakdown of TDRs included in nonperforming loans by loan category for the period indicated are as follows: December 31, 2022 Number of Loans Pre-modification Outstanding Recorded Investment Post-modification Outstanding Recorded Investment Dollars in millions LOAN TYPE Nonperforming: Commercial and industrial 27 $ 60 $ 45 Commercial real estate: Commercial mortgage 4 50 13 Total commercial real estate loans 4 50 13 Total commercial loans 31 110 58 Real estate — residential mortgage 238 30 27 Home equity loans 468 32 28 Consumer direct loans 156 2 2 Credit cards 331 2 2 Consumer indirect loans 16 2 1 Total consumer loans 1,209 68 60 Total nonperforming TDRs 1,240 178 118 Prior-year accruing: (a) Commercial and industrial 19 — — Commercial real estate Commercial mortgage — — — Total commercial real estate loans — — — Total commercial loans 19 — — Real estate — residential mortgage 425 41 35 Home equity loans 1,547 96 73 Consumer direct loans 272 4 3 Credit cards 607 4 2 Consumer indirect loans 95 11 5 Total consumer loans 2,946 156 118 Total prior-year accruing TDRs 2,965 156 118 Total TDRs 4,205 $ 334 $ 236 (a) All TDRs that were restructured prior to January 1, 2022 are fully accruing.
Schedule of Changes in Liability for Credit Losses on Off-Balance Sheet Exposures	Changes in the liability for credit losses on off balance sheet exposures are summarized as follows: Three months ended March 31, Dollars in millions 2023 2022 Balance at beginning of period $ 225 $ 160 Provision (credit) for losses on off balance sheet exposures 51 6 Balance at end of period $ 276 $ 166
Schedule of Post-Modification Outstanding Recorded Investment by Concession Type for Our Commercial Accruing and Nonaccruing TDRs	The following table shows the post-modification outstanding recorded investment by concession type for our commercial and consumer accruing and nonaccruing TDRs that occurred during the period indicated: Three Months Ended March 31, Dollars in millions 2022 Commercial loans: Extension of Maturity Date $ — Payment or Covenant Modification/Deferment 1 Bankruptcy Plan Modification — Increase in new commitment or new money — Total $ 1 Consumer loans: Interest rate reduction $ 1 Other 9 Total $ 10 Total TDRs $ 11
Schedule of Post-Modification Outstanding Recorded Investment, Accruing and Nonaccruing TDRs	The following table summarizes the change in the post-modification outstanding recorded investment of our accruing and nonaccruing TDRs during the period indicated: Three Months Ended March 31, Dollars in millions 2022 Balance at beginning of the period $ 220 Additions 11 Payments (12) Charge-offs — Balance at end of period $ 219

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2023
Fair Value Disclosures [Abstract]
Schedule of Fair Value of Assets and Liabilities Measured on Recurring Basis	The following tables present these assets and liabilities at March 31, 2023, and December 31, 2022. March 31, 2023 December 31, 2022 Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Dollars in millions ASSETS MEASURED ON A RECURRING BASIS Trading account assets: U.S. Treasury, agencies and corporations $ — $ 926 $ — $ 926 $ — $ 698 $ — $ 698 States and political subdivisions — 36 — 36 — 33 — 33 Other mortgage-backed securities — 152 — 152 — 84 — 84 Other securities — 3 — 3 — — — — Total trading account securities — 1,117 — 1,117 — 815 — 815 Commercial loans — 1 — 1 — 14 — 14 Total trading account assets — 1,118 — 1,118 — 829 — 829 Securities available for sale: U.S. Treasury, agencies and corporations — 9,514 — 9,514 — 9,415 — 9,415 States and political subdivisions — — — — — — — — Agency residential collateralized mortgage obligations — 16,425 — 16,425 — 16,433 — 16,433 Agency residential mortgage-backed securities — 3,900 — 3,900 — 3,920 — 3,920 Agency commercial mortgage-backed securities — 9,659 — 9,659 — 9,349 — 9,349 Other securities — — — — — — — — Total securities available for sale $ — $ 39,498 $ — $ 39,498 $ — $ 39,117 $ — $ 39,117 Other investments: Principal investments: Direct $ — $ — $ 1 $ 1 $ — $ — $ 1 $ 1 Indirect (measured at NAV) (a) — — — 20 — — — 34 Total principal investments — — 1 21 — — 1 35 Equity investments: Direct 3 — 2 5 4 — 2 6 Direct (measured at NAV) (a) — — — 31 — — — 32 Indirect (measured at NAV) (a) — — — 4 — — — 4 Total equity investments 3 — 2 40 4 — 2 42 Total other investments 3 — 3 61 4 — 3 77 Loans, net of unearned income (residential) — — 9 9 — — 9 9 Loans held for sale (residential) — 45 — 45 — 24 — 24 Derivative assets: Interest rate — 228 13 241 — 301 2 303 Foreign exchange 113 18 — 131 112 23 — 136 Commodity — 986 — 986 — 1,328 — 1,328 Credit — — 1 1 — — 1 1 Other — 15 1 16 — 13 — 13 Derivative assets 113 1,247 15 1,375 112 1,666 3 1,781 Netting adjustments (b) — — — (978) — — — (757) Total derivative assets 113 1,247 15 397 112 1,666 3 1,024 Total assets on a recurring basis at fair value $ 116 $ 41,908 $ 27 $ 41,128 $ 116 $ 41,636 $ 15 $ 41,080 LIABILITIES MEASURED ON A RECURRING BASIS Bank notes and other short-term borrowings: Short positions $ 58 $ 753 $ — $ 811 $ 126 $ 509 $ — $ 635 Derivative liabilities: Interest rate — 1,057 — 1,057 — 1,307 — 1,307 Foreign exchange 95 18 — 113 107 24 — 131 Commodity — 962 — 962 — 1,304 — 1,304 Credit — 1 2 3 — — 3 3 Other — 9 — 9 — 5 — 5 Derivative liabilities 95 2,047 2 2,144 107 2,640 3 2,750 Netting adjustments (b) — — — (850) — — — (1,262) Total derivative liabilities 95 2,047 2 1,294 107 2,640 3 1,488 Total liabilities on a recurring basis at fair value $ 153 $ 2,800 $ 2 $ 2,105 $ 233 $ 3,149 $ 3 $ 2,123 (a) Certain investments that are measured at fair value using the net asset value per share (or its equivalent) practical expedient have not been classified in the fair value hierarchy. The fair value amounts presented in this table are intended to permit reconciliation of the fair value hierarchy to the amounts presented in the consolidated balance sheet. (b) Netting adjustments represent the amounts recorded to convert our derivative assets and liabilities from a gross basis to a net basis in accordance with the applicable accounting guidance. The net basis takes into account the impact of bilateral collateral and master netting agreements that allow us to settle all derivative contracts with a single counterparty on a net basis and to offset the net derivative position with the related cash collateral. Total derivative assets and liabilities include these netting adjustments.
Schedule of Fair Value of Direct and Indirect Investments, Related Unfunded Commitments and Financial Support Provided	The following table presents the fair value of our direct and indirect principal investments and related unfunded commitments at March 31, 2023, as well as financial support provided for the three months ended March 31, 2023, and March 31, 2022. Financial support provided Three months ended March 31, March 31, 2023 2023 2022 Dollars in millions Fair Value Unfunded Funded Funded Other Funded Funded Other INVESTMENT TYPE Direct investments $ 1 $ — $ — $ — $ — $ — Indirect investments (measured at NAV) (a) 20 3 — — — — Total $ 21 $ 3 $ — $ — $ — $ — (a) Our indirect investments consist of buyout funds, venture capital funds, and fund of funds. These investments are generally not redeemable. Instead, distributions are received through the liquidation of the underlying investments of the fund. An investment in any one of these funds typically can be sold only with the approval of the fund’s general partners. At March 31, 2023, no significant liquidation of the underlying investments has been communicated to Key. The purpose of funding our capital commitments to these investments is to allow the funds to make additional follow-on investments and pay fund expenses until the fund dissolves. We, and all other investors in the fund, are obligated to fund the full amount of our respective capital commitments to the fund based on our and their respective ownership percentages, as noted in the applicable Limited Partnership Agreement.
Schedule of Change in Fair Values of Level 3 Financial Instruments	The following table shows the components of the change in the fair values of our Level 3 financial instruments measured at fair value on a recurring basis for the three months ended March 31, 2023, and March 31, 2022. Dollars in millions Beginning of Period Balance Gains (Losses) Included in Other Comprehensive Income Gains (Losses) Included in Earnings Purchases Sales Settlements Transfers Other Transfers into Level 3 Transfers out of Level 3 End of Period Balance Unrealized Gains (Losses) Included in Earnings Three months ended March 31, 2023 Other investments Principal investments Direct (a) $ 1 $ — $ — $ — $ — $ — $ — $ — $ — $ 1 $ — Other indirect — — — — — — — — — — — Equity investments Direct (a) 2 — — — — — — — — 2 — Loans, net of unearned income (residential) 9 — — — — — — — — 9 — Derivative instruments (b) Interest rate 2 — 6 (c) 18 (1) — — (8) (d) (4) (d) 13 — Credit (2) — 1 (c) — — — — — — (1) — Other (e) — — — (c) — — — 1 — — 1 — Dollars in millions Beginning of Period Balance Gains (Losses) Included in Other Comprehensive Income Gains (Losses) Included in Earnings Purchases Sales Settlements Transfers Other Transfers into Level 3 Transfers out of Level 3 End of Period Balance Unrealized Gains (Losses) Included in Earnings Three months ended March 31, 2022 Other investments Principal investments Direct (a) $ 1 $ — $ — $ — $ — $ — $ — $ — $ — $ 1 $ — Equity investments Direct (a) 9 (2) — — — — — — 7 (2) Loans, net of unearned income (residential) 11 — — — — — — — — 11 — Derivative instruments (b) Interest rate 33 — (11) (c) 1 — 29 (d) (9) (d) 43 — Credit (6) — 1 (c) — — — — — — (5) — Other (e) 5 — — (c) — — (7) — — (2) — (a) Realized and unrealized gains and losses on principal investments and other equity investments are reported in “other income” on the income statement. (b) Amounts represent Level 3 derivative assets less Level 3 derivative liabilities. (c) Realized and unrealized gains and losses on derivative instruments are reported in “corporate services income” and “other income” on the income statement. (d) Certain instruments previously classified as Level 2 were transferred to Level 3 because Level 3 unobservable inputs became significant. Certain derivatives previously classified as Level 3 were transferred to Level 2 because Level 3 unobservable inputs became less significant. (e) Amounts represent Level 3 interest rate lock commitments.
Schedule of Assets and Liabilities Measured at Fair Value on Nonrecurring Basis	The following table presents our assets measured at fair value on a nonrecurring basis at March 31, 2023, and December 31, 2022: March 31, 2023 December 31, 2022 Dollars in millions Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total ASSETS MEASURED ON A NONRECURRING BASIS Collateral-dependent loans $ — $ — $ 60 $ 60 $ — $ — $ 17 $ 17 Accrued income and other assets — — 72 72 — — 14 14 Total assets on a nonrecurring basis at fair value $ — $ — $ 132 $ 132 $ — $ — $ 31 $ 31
Schedule of Quantitative Information about Level 3 Fair Value Measurements	The range and weighted-average of the significant unobservable inputs used to fair value our material Level 3 recurring and nonrecurring assets at March 31, 2023, and December 31, 2022, along with the valuation techniques used, are shown in the following table: Level 3 Asset (Liability) Valuation Technique Significant Unobservable Input Range (Weighted-Average) (a), (b) Dollars in millions March 31, 2023 December 31, 2022 March 31, 2023 December 31, 2022 Recurring Loans, net of unearned income (residential) $ 9 $ 9 Market comparable pricing Comparability factor 61.72 - 87.23% (72.34%) 61.00-86.58% (72.21%) Derivative instruments: Interest rate 13 2 Discounted cash flows Probability of default .02 - 100% (6.80%) .02 - 100% (8.00%) Loss given default 0 - 1 (.495) 0 - 1 (.492) Insignificant level 3 assets, net of liabilities (c) 3 1 Nonrecurring Collateral-dependent loans 60 17 Fair value of collateral Discount rate 0 - 10.00% (4.00%) 0 - 85.00% (34.00%) Accrued income and other assets: OREO and other Level 3 assets (d) 72 14 Appraised value Appraised value N/M N/M (a) The weighted average of significant unobservable inputs is calculated using a weighting relative to fair value. (b) For significant unobservable inputs with no range, a single figure is reported to denote the single quantitative factor used. (c) Represents the aggregate amount of Level 3 assets and liabilities measured at fair value on a recurring basis that are individually and in the aggregate insignificant. The amount includes certain equity investments and certain financial derivative assets and liabilities. (d) Excludes amounts pertaining to mortgage servicing assets. No mortgage servicing assets required nonrecurring valuation adjustments as of March 31, 2023, and December 31, 2022. Refer to Note 8 (“Mortgage Servicing Assets”) for significant unobservable inputs pertaining to these assets.
Schedule of Fair Value Disclosures of Financial Instruments	The Levels in the fair value hierarchy ascribed to our financial instruments and the related carrying amounts at March 31, 2023, and December 31, 2022, are shown in the following tables. Assets and liabilities are further arranged by measurement category. March 31, 2023 Fair Value Dollars in millions Carrying Amount Level 1 Level 2 Level 3 Measured at NAV Netting Adjustment Total ASSETS (by measurement category) Fair value - net income Trading account assets (b) $ 1,118 $ — $ 1,118 $ — $ — $ — $ 1,118 Other investments (b) 1,587 3 — 1,530 54 — 1,587 Loans, net of unearned income (residential) (d) 9 — — 9 — — 9 Loans held for sale (residential) (b) 45 — 45 — — — 45 Derivative assets - trading (b) 382 113 1,193 15 — (939) (f) 382 Fair value - OCI Securities available for sale (b) 39,498 — 39,498 — — — 39,498 Derivative assets - hedging (b)(g) 15 — 54 — — (39) (f) 15 Amortized cost Held-to-maturity securities (c) 9,561 — 9,085 — — — 9,085 Loans, net of unearned income (d) 118,582 — — 112,964 — — 112,964 Loans held for sale (b) 1,166 — — 1,166 — — 1,166 Other Cash and other short-term investments (a) 9,194 9,194 — — — — 9,194 LIABILITIES (by measurement category) Fair value - net income Derivative liabilities - trading (b) $ 1,332 $ 95 $ 2,070 $ 2 $ — $ (835) (f) $ 1,332 Fair value - OCI Derivative liabilities - hedging (b)(g) (38) — (23) — — (15) (f) (38) Amortized cost Time deposits (e) 13,838 — 13,898 — — — 13,898 Short-term borrowings (a) 11,435 58 11,377 — — — 11,435 Long-term debt (e) 22,753 12,195 9,696 — — — 21,891 Other Deposits with no stated maturity (a) 130,310 — 130,310 — — — 130,310 December 31, 2022 Fair Value Dollars in millions Carrying Amount Level 1 Level 2 Level 3 Measured at NAV Netting Adjustment Total ASSETS (by measurement category) Fair value - net income Trading account assets (b) $ 829 $ — $ 829 $ — $ — $ — $ 829 Other investments (b) 1,308 4 — 1,234 70 — 1,308 Loans, net of unearned income (residential) (d) 9 — — 9 — — 9 Loans held for sale (residential) (b) 24 — 24 — — — 24 Derivative assets - trading (b) 927 $ 112 1,552 3 — (740) (f) 927 Fair value - OCI Securities available for sale (b) 39,117 — 39,117 — — — 39,117 Derivative assets - hedging (b)(g) 97 — 114 — — (17) (f) 97 Amortized cost Held-to-maturity securities (c) 8,710 — 8,113 — — — 8,113 Loans, net of unearned income (d) 118,048 — — 112,590 — — 112,590 Loans held for sale (b) 939 — — 939 — — 939 Other Cash and other short-term investments (a) 3,319 3,319 — — — — 3,319 LIABILITIES (by measurement category) Fair value - net income Derivative liabilities - trading (b) $ 1,485 $ 107 $ 2,637 $ 3 $ — $ (1,262) (f) $ 1,485 Fair value - OCI Derivative liabilities - hedging (b)(g) 3 — 3 — — — (f) 3 Amortized cost Time deposits (e) 7,373 — 7,392 — — — 7,392 Short-term borrowings (a) 9,463 126 9,337 — — — 9,463 Long-term debt (e) 19,307 12,196 6,685 — — — 18,881 Other Deposits with no stated maturity (a) 135,222 — 135,222 — — — 135,222 Valuation Methods and Assumptions (a) Fair value equals or approximates carrying amount. The fair value of deposits with no stated maturity does not take into consideration the value ascribed to core deposit intangibles. (b) Information pertaining to our methodology for measuring the fair values of these assets and liabilities is included in the sections entitled “Qualitative Disclosures of Valuation Techniques” and “Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis” within our 2022 Form 10-K Note 6 (“Fair Value Measurements”). Investments accounted for under the cost method (or cost less impairment adjusted for observable price changes for certain equity investments) are classified as Level 3 assets. These investments are not actively traded in an open market as sales for these types of investments are rare. The carrying amount of the investments carried at cost are adjusted for declines in value if they are considered to be other-than-temporary (or due to observable orderly transactions of the same issuer for equity investments eligible for the cost less impairment measurement alternative). These adjustments are included in “other income” on the income statement. (c) Fair values of held-to-maturity securities are determined by using models that are based on security-specific details, as well as relevant industry and economic factors. The most significant of these inputs are quoted market prices, interest rate spreads on relevant benchmark securities, and certain prepayment assumptions. We review the valuations derived from the models to ensure that they are reasonable and consistent with the values placed on similar securities traded in the secondary markets. (d) The fair value of loans is based on the present value of the expected cash flows. The projected cash flows are based on the contractual terms of the loans, adjusted for prepayments and use of a discount rate based on the relative risk of the cash flows, taking into account the loan type, maturity of the loan, liquidity risk, servicing costs, and a required return on debt and capital. In addition, an incremental liquidity discount is applied to certain loans, using historical sales of loans during periods of similar economic conditions as a benchmark. The fair value of loans includes lease financing receivables at their aggregate carrying amount, which is equivalent to their fair value. (e) Fair values of time deposits and long-term debt classified as Level 2 are based on discounted cash flows utilizing relevant market inputs. (f) Netting adjustments represent the amounts recorded to convert our derivative assets and liabilities from a gross basis to a net basis in accordance with the applicable accounting guidance. The net basis takes into account the impact of bilateral collateral and master netting agreements that allow us to settle all derivative contracts with a single counterparty on a net basis and to offset the net derivative position with the related cash collateral. Total derivative assets and liabilities include these netting adjustments. (g) Derivative assets-hedging and derivative liabilities-hedging includes both cash flow and fair value hedges. Additional information regarding our accounting policies for cash flow and fair value hedges is provided in Note 1 (“Summary of Significant Accounting Policies”) under the heading “Derivatives and Hedging” beginning on page 111 of our 2022 Form 10-K.

Securities (Tables)

Securities (Tables)	3 Months Ended
	Mar. 31, 2023
Investments, Debt and Equity Securities [Abstract]
Schedule of Details of Securities	The amortized cost, unrealized gains and losses, and approximate fair value of our securities available for sale and held-to-maturity securities are presented in the following tables. Gross unrealized gains and losses represent the difference between the amortized cost and the fair value of securities on the balance sheet as of the dates indicated. Accordingly, the amount of these gains and losses may change in the future as market conditions change. March 31, 2023 December 31, 2022 Dollars in millions Amortized Cost (a) Gross Unrealized Gains Gross Unrealized Losses Fair Value Amortized Cost (b) Gross Unrealized Gains Gross Unrealized Losses Fair Value SECURITIES AVAILABLE FOR SALE U.S. Treasury, agencies, and corporations $ 10,027 $ — $ 513 $ 9,514 $ 10,044 $ — $ 629 $ 9,415 Agency residential collateralized mortgage obligations 19,770 — 3,345 16,425 20,180 — 3,747 16,433 Agency residential mortgage-backed securities 4,534 — 634 3,900 4,616 — 696 3,920 Agency commercial mortgage-backed securities 10,848 5 1,194 9,659 10,712 2 1,365 9,349 Other securities — — — — — — — — Total securities available for sale $ 45,179 $ 5 $ 5,686 $ 39,498 $ 45,552 $ 2 $ 6,437 $ 39,117 HELD-TO-MATURITY SECURITIES Agency residential collateralized mortgage obligations $ 5,566 $ 15 $ 232 $ 5,349 $ 4,586 $ 5 $ 283 $ 4,308 Agency residential mortgage-backed securities 177 — 12 165 181 — 16 165 Agency commercial mortgage-backed securities 2,584 2 184 2,402 2,522 1 208 2,315 Asset-backed securities (c) 1,219 — 64 1,155 1,407 — 96 1,311 Other securities 15 — 1 14 14 — — 14 Total held-to-maturity securities $ 9,561 $ 17 493 $ 9,085 $ 8,710 $ 6 $ 603 $ 8,113 (a) Amortized cost amounts exclude accrued interes t receivable which is recorded within Other Assets on the balance sheet. At March 31, 2023, accrued interest receivable on available for sale securities and held-to-maturity securities totaled $66 million and $24 million, respectively. (b) Amortized cost amounts exclude accrued interes t receivable which is recorded within Other Assets on the balance sheet. At December 31, 2022, accrued interest receivable on available for sale securities and held-to-maturity securities totaled $67 million and $88 million , respectively. (c) Consists primarily of $1.2 billion of securities as of March 31, 2023, and $1.4 billion of securities as of December 31, 2022, related to the purchase of senior notes from a securitization collateralized by sold indirect auto loans.
Schedule of Securities in an Unrealized Loss Position	The following table summarizes securities in an unrealized loss position for which an allowance for credit losses has not been recorded as of March 31, 2023, and December 31, 2022. Duration of Unrealized Loss Position Less than 12 Months 12 Months or Longer Total Dollars in millions Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses March 31, 2023 Securities available for sale: U.S Treasury, agencies, and corporations $ — $ — $ 9,514 $ 513 $ 9,514 $ 513 Agency residential collateralized mortgage obligations 127 4 16,297 3,341 16,424 3,345 Agency residential mortgage-backed securities 350 12 3,547 622 3,897 634 Agency commercial mortgage-backed securities 2,780 118 6,684 1,076 9,464 1,194 Held-to-maturity securities: Agency residential collateralized mortgage obligations 2,935 85 1,399 147 4,334 232 Agency residential mortgage-backed securities 45 2 119 10 164 12 Agency commercial mortgage-backed securities 370 32 1,958 152 2,328 184 Asset-backed securities — — 1,155 64 1,155 64 Other securities 10 — (a) 4 1 14 1 Total securities in an unrealized loss position $ 6,617 $ 253 $ 40,677 $ 5,926 $ 47,294 $ 6,179 December 31, 2022 Securities available for sale: U.S. Treasury, agencies, and corporations $ 494 $ 48 $ 8,920 $ 581 $ 9,414 $ 629 Agency residential collateralized mortgage obligations 3,114 377 13,317 3,370 16,431 3,747 Agency residential mortgage-backed securities 579 31 3,338 665 3,917 696 Agency commercial mortgage-backed securities 4,511 282 4,791 1,083 9,302 1,365 Held-to-maturity securities: Agency residential collateralized mortgage obligations 2,659 178 726 105 3,385 283 Agency residential mortgage-backed securities 165 16 — — 165 16 Agency commercial mortgage-backed securities 2,243 208 — — 2,243 208 Asset-backed securities 1 — (b) 1,309 96 1,310 96 Other securities 10 — (b) 4 — (b) 14 — Total securities in an unrealized loss position $ 13,776 $ 1,140 $ 32,405 $ 5,900 $ 46,181 $ 7,040 (a) At March 31, 2023, gross unrealized losses totaled less than $1 million for other securities held-to-maturity with a loss duration of less than 12 months. (b) At December 31, 2022, gross unrealized losses totaled less than $1 million for asset-back securities and other securities held-to-maturity with a loss duration of less than 12 months. At December 31, 2022, gross unrealized losses totaled less than $1 million for agency residential mortgage-backed securities held-to-maturity with a loss duration greater than 12 months or longer.
Schedule of Securities by Maturity	The following table shows our securities by remaining maturity. CMOs, other mortgage-backed securities, and asset-backed securities in the available for sale portfolio and held-to-maturity portfolio are presented based on their expected average lives. The remaining securities, in both the available-for-sale and held-to-maturity portfolios, are presented based on their remaining contractual maturity. Actual maturities may differ from expected or contractual maturities since borrowers have the right to prepay obligations with or without prepayment penalties. March 31, 2023 Securities Available for Sale Held to Maturity Securities Dollars in millions Amortized Cost Fair Value Amortized Cost Fair Value Due in one year or less $ 1,944 $ 1,887 $ 21 $ 21 Due after one through five years 15,833 14,676 5,497 5,222 Due after five through ten years 21,477 18,176 3,191 3,023 Due after ten years 5,925 4,759 852 819 Total $ 45,179 $ 39,498 $ 9,561 $ 9,085

Derivatives and Hedging Activ_2

Derivatives and Hedging Activities (Tables)	3 Months Ended
	Mar. 31, 2023
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Fair Values, Volume of Activity and Gain (Loss) Information Related to Derivative Instruments	The following table summarizes the fair values of our derivative instruments on a gross and net basis as of March 31, 2023, and December 31, 2022. Total derivative assets and liabilities are adjusted to take into account the impact of legally enforceable master netting agreements that allow us to settle all derivative contracts with a single counterparty on a net basis and to offset the net derivative position with the related cash collateral. Securities collateral related to legally enforceable master netting agreements is not offset on the balance sheet. Our derivative instruments are included in “accrued income and other assets” or “accrued expenses and other liabilities” on the Consolidated Balance Sheets, as follows: March 31, 2023 December 31, 2022 Fair Value (a) Fair Value (a) Dollars in millions Notional Amount Derivative Assets Derivative Liabilities Notional Amount Derivative Assets Derivative Liabilities Derivatives designated as hedging instruments: Interest rate $ 50,243 $ 54 $ (23) $ 41,200 $ 114 $ 3 Derivatives not designated as hedging instruments: Interest rate 84,338 187 1,080 80,772 189 1,304 Foreign exchange 10,320 131 113 9,507 136 131 Commodity 14,382 986 962 16,176 1,328 1,304 Credit 146 1 3 95 1 3 Other (b) 1,860 16 9 940 13 5 Total derivatives not designated as hedging instruments: 111,046 1,321 2,167 107,490 1,667 2,747 Netting adjustments (c) — (978) (850) — (757) (1,262) Net derivatives in the balance sheet 161,289 397 1,294 148,690 1,024 1,488 Other collateral (d) — — (13) — — (5) Net derivative amounts $ 161,289 $ 397 $ 1,281 $ 148,690 $ 1,024 $ 1,483 (a) We take into account bilateral collateral and master netting agreements that allow us to settle all derivative contracts held with a single counterparty on a net basis, and to offset the net derivative position with the related cash collateral when recognizing derivative assets and liabilities. As a result, we could have derivative contracts with negative fair values included in derivative assets and contracts with positive fair values included in derivative liabilities. (b) Other derivatives include interest rate lock commitments related to our residential and commercial banking activities, forward sale commitments related to our residential mortgage banking activities, forward purchase and sales contracts consisting of contractual commitments associated with “to be announced” securities and when-issued securities, and other customized derivative contracts. (c) Netting adjustments represent the amounts recorded to convert our derivative assets and liabilities from a gross basis to a net basis in accordance with the applicable accounting guidance. Excess collateral that has not been offset against net derivative instrument positions totaled $184 million of collateral posted and $58 million of collateral held. (d) Other collateral represents the amount that cannot be used to offset our derivative assets and liabilities from a gross basis to a net basis in accordance with the applicable accounting guidance. The other collateral consists of securities and is exchanged under bilateral collateral and master netting agreements that allow us to offset the net derivative position with the related collateral. The application of the other collateral cannot reduce the net derivative position below zero. Therefore, excess other collateral, if any, is not reflected above.
Schedule of Pre-Tax Net Gains (Losses) on Fair Value Hedges	The following tables summarize the amounts that were recorded on the balance sheet as of March 31, 2023, and December 31, 2022, related to cumulative basis adjustments for fair value hedges. March 31, 2023 Dollars in millions Balance sheet line item in which the hedge item is included Carrying amount of hedged item (a) Hedge accounting basis adjustment (b) Interest rate contracts Long-term debt $ 10,836 $ (359) Interest rate contracts Securities Available for Sale (c) 1,663 53 December 31, 2022 Balance sheet line item in which the hedge item is included Carrying amount of hedged item (a) Hedge accounting basis adjustment (b) Interest rate contracts Long-term debt $ 10,411 $ (552) Interest rate contracts Securities Available for Sale (c) 405 48 (a) The carrying amount represents the portion of the asset or liability designated as the hedged item. (b) Basis adjustments related to de-designated hedged items that no longer qualify as fair value hedges reduced the hedge accounting basis adjustm en t by $6 million a nd $6 million at March 31, 2023, and December 31, 2022, respectively. (c) Certain amounts are designed as fair value hedges under the last-of-layer method. The carrying amount represents the amortized costs basis of the prepayable financial assets used to designate hedging relationships in which the hedged item is the l ast layer expected to be remaining at the end of the relationship. At March 31, 2023, and December 31, 2022, the amortized costs of the closed portfolios in these hedging relationships
Schedule of Derivatives Instruments Statements of Financial Performance and Financial Position, Location	The following tables summarize the effect of fair value and cash flow hedge accounting on the income statement for the three-month periods ended March 31, 2023, and March 31, 2022. Location and amount of net gains (losses) recognized in income on fair value and cash flow hedging relationships Dollars in millions Interest expense – long-term debt Interest income – loans Interest Income - securities Investment banking and debt placement fees Three months ended March 31, 2023 Total amounts presented in the consolidated statement of income $ (275) $ 1,476 $ 194 $ 145 Net gains (losses) on fair value hedging relationships Interest contracts Recognized on hedged items $ (155) $ — $ 6 $ — Recognized on derivatives designated as hedging instruments 108 — (2) — Net income (expense) recognized on fair value hedges $ (47) $ — $ 4 $ — Net gain (loss) on cash flow hedging relationships Interest contracts Realized gains (losses) (pre-tax) reclassified from AOCI into net income $ (1) $ (215) $ — $ — Net income (expense) recognized on cash flow hedges $ (1) $ (215) $ — $ — Three months ended March 31, 2022 Total amounts presented in the consolidated statement of income $ (49) $ 837 $ 173 $ 163 Net gains (losses) on fair value hedging relationships Interest contracts Recognized on hedged items $ 240 $ — $ (276) $ — Recognized on derivatives designated as hedging instruments (216) — 282 — Net income (expense) recognized on fair value hedges $ 24 $ — $ 6 $ — Net gain (loss) on cash flow hedging relationships Interest contracts Realized gains (losses) (pre-tax) reclassified from AOCI into net income $ (1) $ 64 $ — $ 2 Net income (expense) recognized on cash flow hedges $ (1) $ 64 $ — $ 2
Schedule of Derivative Instrument Cash Flow Hedge Earning Recognized by Income Statement Location	The following tables summarize the pre-tax net gains (losses) on our cash flow hedges for the three-month periods ended March 31, 2023, and March 31, 2022, and where they are recorded on the income statement. The table includes net gains (losses) recognized in OCI during the period and net gains (losses) reclassified from OCI into income during the current period. Dollars in millions Net Gains (Losses) Recognized in OCI Income Statement Location of Net Gains (Losses) Reclassified From OCI Into Income Net Gains (Losses) Reclassified From OCI Into Income Three months ended March 31, 2023 Cash Flow Hedges Interest rate $ 109 Interest income — Loans $ (215) Interest rate (1) Interest expense — Long-term debt (1) Interest rate (1) Investment banking and debt placement fees — Total $ 107 $ (216) Three months ended March 31, 2022 Cash Flow Hedges Interest rate $ (670) Interest income — Loans $ 64 Interest rate 3 Interest expense — Long-term debt (1) Interest rate 9 Investment banking and debt placement fees 2 Total $ (658) $ 65
Schedule of Pre-Tax Net Gains (Losses) on Derivatives Not Designated as Hedging Instruments	The following table summarizes the pre-tax net gains (losses) on our derivatives that are not designated as hedging instruments for the three-month periods ended March 31, 2023, and March 31, 2022, and where they are recorded on the income statement. Three months ended March 31, 2023 Three months ended March 31, 2022 Dollars in millions Corporate services income Consumer mortgage income Other income Total Corporate services income Consumer mortgage income Other income Total NET GAINS (LOSSES) Interest rate $ 12 $ — $ (2) $ 10 $ 13 $ — $ 9 $ 22 Foreign exchange 13 — — 13 13 — — 13 Commodity 7 — — 7 5 — — 5 Credit — — (14) (14) 2 — (10) (8) Other — 1 (2) (1) — (4) 7 3 Total net gains (losses) $ 32 $ 1 $ (18) $ 15 $ 33 $ (4) $ 6 $ 35
Schedule of Fair Value of Derivative Assets by Type	The following table summarizes the fair value of our derivative assets by type at the dates indicated. These assets represent our gross exposure to potential loss after taking into account the effects of bilateral collateral and master netting agreements and other means used to mitigate risk. Dollars in millions March 31, 2023 December 31, 2022 Interest rate $ 169 $ 136 Foreign exchange 63 67 Commodity 439 820 Credit — — Other 15 11 Derivative assets before collateral 686 1,034 Plus(Less): Related collateral (289) (10) Total derivative assets $ 397 $ 1,024
Schedule of Credit Derivatives Sold and Held	The following table provides information on the types of credit derivatives sold by us and held on the balance sheet at March 31, 2023, and December 31, 2022. The notional amount represents the amount that the seller could be required to pay. The payment/performance risk shown in the table represents a weighted average of the default probabilities for all reference entities in the respective portfolios. These default probabilities are implied from observed credit indices in the credit default swap market, which are mapped to reference entities based on Key’s internal risk rating. March 31, 2023 December 31, 2022 Dollars in millions Notional Amount Average Term (Years) Payment / Performance Risk Notional Amount Average Term (Years) Payment / Performance Risk Other $ 1 11.04 6.05 % $ 1 15.17 5.10 % Total credit derivatives sold $ 1 — — $ 1 — —
Schedule of Credit Risk Contingent Feature	Refer to the table below for the aggregate fair value of all derivative contracts with credit risk contingent features held by KeyBank that were in a net liability position. Dollars in millions March 31, 2023 December 31, 2022 Net derivative liabilities with credit-risk contingent features (171) (612) Collateral posted 141 534

Mortgage Servicing Assets (Tabl

Mortgage Servicing Assets (Tables)	3 Months Ended
	Mar. 31, 2023
Servicing Asset [Abstract]
Schedule of Changes in Carrying Amount of Mortgage Servicing Assets	Changes in the carrying amount of commercial mortgage servicing assets are summarized as follows: Three months ended March 31, Dollars in millions 2023 2022 Balance at beginning of period $ 653 $ 634 Servicing retained from loan sales 9 30 Purchases 4 11 Amortization (32) (31) Temporary (impairments) recoveries — — Balance at end of period $ 634 $ 644 Fair value at end of period $ 981 $ 846 Changes in the carrying amount of residential mortgage servicing assets are summarized as follows: Three months ended March 31, Dollars in millions 2023 2022 Balance at beginning of period $ 106 $ 93 Servicing retained from loan sales 1 11 Purchases — — Amortization (2) (4) Temporary (impairments) recoveries — 1 Balance at end of period $ 105 $ 101 Fair value at end of period $ 129 $ 116
Schedule of Range and Weighted-Average of Significant Unobservable Inputs	The range and weighted average of the significant unobservable inputs used to determine the fair value of our commercial mortgage servicing assets at March 31, 2023, and March 31, 2022, along with the valuation techniques, are shown in the following table: Dollars in millions March 31, 2023 March 31, 2022 Valuation Technique Significant Unobservable Input Range Weighted Average Range Weighted Average Discounted cash flow Expected defaults 0.96 % 2.00 % 1.06 % 1.00 % 2.00 % 1.12 % Residual cash flows discount rate 8.57 % 10.03 % 9.49 % 8.34 % 10.32 % 9.52 % Escrow earn rate 4.94 % 4.95 % 4.94 % 2.06 % 2.49 % 2.31 % Loan assumption rate — % 1.40 % 1.14 % — % 1.64 % 1.29 % March 31, 2023 March 31, 2022 Valuation Technique Significant Unobservable Input Range Weighted Average Range Weighted Average Discounted cash flow Prepayment speed 6.41 % 40.74 % 7.30 % 5.84 % 59.51 % 8.82 % Discount rate 7.50 % 8.50 % 7.54 % 7.50 % 8.52 % 7.53 % Servicing cost $ 62.00 $ 8,075 $ 67.36 $ 62.00 $ 8,075 $ 67.46

Leases (Tables)

Leases (Tables)	3 Months Ended
	Mar. 31, 2023
Leases [Abstract]
Schedule of Operating Lease, Lease Income	The components of equipment leasing income are summarized in the table below: Three months ended March 31, Dollars in millions 2023 2022 Sales-type and direct financing leases Interest income on lease receivable $ 19 $ 16 Interest income related to accretion of unguaranteed residual asset 3 4 Total sales-type and direct financing lease income $ 22 $ 20 Operating leases Operating lease income related to lease payments $ 24 $ 28 Other operating leasing gains 1 4 Total operating lease income and other leasing gains 25 32 Total lease income $ 47 $ 52
Schedule of Sales-type Lease, Lease Income	The components of equipment leasing income are summarized in the table below: Three months ended March 31, Dollars in millions 2023 2022 Sales-type and direct financing leases Interest income on lease receivable $ 19 $ 16 Interest income related to accretion of unguaranteed residual asset 3 4 Total sales-type and direct financing lease income $ 22 $ 20 Operating leases Operating lease income related to lease payments $ 24 $ 28 Other operating leasing gains 1 4 Total operating lease income and other leasing gains 25 32 Total lease income $ 47 $ 52
Schedule of Direct Financing Lease, Lease Income	The components of equipment leasing income are summarized in the table below: Three months ended March 31, Dollars in millions 2023 2022 Sales-type and direct financing leases Interest income on lease receivable $ 19 $ 16 Interest income related to accretion of unguaranteed residual asset 3 4 Total sales-type and direct financing lease income $ 22 $ 20 Operating leases Operating lease income related to lease payments $ 24 $ 28 Other operating leasing gains 1 4 Total operating lease income and other leasing gains 25 32 Total lease income $ 47 $ 52

Goodwill (Tables)

Goodwill (Tables)	3 Months Ended
	Mar. 31, 2023
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Goodwill	Changes in the carrying amount of goodwill by reporting segment are presented in the following table: Dollars in millions Consumer Bank Commercial Bank Total BALANCE AT MARCH 31, 2022 $ 1,761 $ 932 $ 2,693 XUP acquisition measurement period adjustment — 1 1 GradFin acquisition 58 — 58 BALANCE AT DECEMBER 31, 2022 $ 1,819 $ 933 $ 2,752 BALANCE AT MARCH 31, 2023 $ 1,819 $ 933 $ 2,752

Variable Interest Entities (Tab

Variable Interest Entities (Tables)	3 Months Ended
	Mar. 31, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Schedule of Variable Interest Entities Information	The assets and liabilities presented in the table below convey the size of KCDC’s direct and indirect investments at March 31, 2023, and December 31, 2022. As these investments represent unconsolidated VIEs, the assets and liabilities of the investments themselves are not recorded on our Consolidated Balance Sheets. Additional information pertaining to our LIHTC investments is included in Note 13 (“Variable Interest Entities”) beginning on page 149 of our 2022 Form 10-K. Unconsolidated VIEs Dollars in millions Total Assets Total Liabilities Maximum Exposure to Loss March 31, 2023 LIHTC investments $ 7,921 $ 2,913 $ 2,514 December 31, 2022 LIHTC investments $ 8,227 $ 3,091 $ 2,370 Unconsolidated VIEs Dollars in millions Total Assets Total Liabilities Maximum Exposure to Loss March 31, 2023 Indirect investments $ 4,523 $ 87 $ 23 December 31, 2022 Indirect investments $ 6,636 $ 90 $ 43 Other unconsolidated VIEs Dollars in millions Total Assets Total Liabilities March 31, 2023 Other unconsolidated VIEs $ 1,659 $ — December 31, 2022 Other unconsolidated VIEs $ 1,798 $ 1

Securities Financing Activiti_2

Securities Financing Activities (Tables)	3 Months Ended
	Mar. 31, 2023
Banking and Thrift, Other Disclosure [Abstract]
Schedule of Summarized Securities Financing Agreements	The following table summarizes our securities financing agreements at March 31, 2023, and December 31, 2022: March 31, 2023 December 31, 2022 Dollars in millions Gross Amount Presented in Balance Sheet Netting Adjustments (a) Collateral (b) Net Amounts Gross Amount Presented in Balance Sheet Netting Adjustments (a) Collateral (b) Net Amounts Offsetting of financial assets: Reverse repurchase agreements $ 12 $ (12) $ — $ — $ 8 $ (8) $ — $ — Securities borrowed — — — — — — — — Total $ 12 $ (12) $ — $ — $ 8 $ (8) $ — $ — Offsetting of financial liabilities: Repurchase agreements (c) $ 59 $ (12) $ (47) $ — $ 71 $ (8) $ (63) $ — Total $ 59 $ (12) $ (47) $ — $ 71 $ (8) $ (63) $ — (a) Netting adjustments take into account the impact of master netting agreements that allow us to settle with a single counterparty on a net basis. (b) These adjustments take into account the impact of bilateral collateral agreements that allow us to offset the net positions with the related collateral. The application of collateral cannot reduce the net position below zero. Therefore, excess collateral, if any, is not reflected above. (c) Repurchase agreements are collateralized by mortgage-backed securities and U.S. Treasuries and are contracted on an overnight or continuous basis.

Employee Benefits (Tables)

Employee Benefits (Tables)	3 Months Ended
	Mar. 31, 2023
Retirement Benefits [Abstract]
Schedule Of Net Pension Cost (Benefit) for All Funded and Unfunded Plans	The components of net pension cost (benefit) for all funded and unfunded plans are recorded in Other expense and are summarized in the following table. For more information on our Pension Plans and Other Postretirement Benefit Plans, see Note 18 (“Employee Benefits”) beginning on page 157 of our 2022 Form 10-K. Three months ended March 31, Dollars in millions 2023 2022 Interest cost on PBO $ 11 $ 7 Expected return on plan assets (11) (7) Amortization of losses 3 4 Settlement loss — — Net pension cost $ 3 $ 4

Trust Preferred Securities Is_2

Trust Preferred Securities Issued by Unconsolidated Subsidiaries (Tables)	3 Months Ended
	Mar. 31, 2023
Banking and Thrift, Other Disclosure [Abstract]
Schedule Of Trust Preferred Securities, Common Stock and Related Debentures	The trust preferred securities, common stock, and related debentures are summarized as follows: Dollars in millions Trust Preferred Securities, Net of Discount (a)(d) Common Stock Principal Amount of Debentures, Net of Discount (b)(d) Interest Rate of Trust Preferred Securities and Debentures (c) Maturity of Trust Preferred Securities and Debentures March 31, 2023 KeyCorp Capital I $ 156 $ 6 $ 162 5.494 % 2028 KeyCorp Capital II 90 4 94 6.875 2029 KeyCorp Capital III 116 4 120 7.750 2029 HNC Statutory Trust III 20 1 21 6.322 2035 HNC Statutory Trust IV 20 1 21 6.176 2036 Willow Grove Statutory Trust I 18 1 19 6.082 2037 Westbank Capital Trust II 8 — 8 7.153 2034 Westbank Capital Trust III 8 — 8 7.153 2034 Total $ 436 $ 17 $ 453 6.533 % — December 31, 2022 $ 433 $ 17 $ 450 5.321 % — (a) The trust preferred securities must be redeemed when the related debentures mature, or earlier if provided in the governing indenture. Each issue of trust preferred securities carries an interest rate identical to that of the related debenture. (b) We have the right to redeem these debentures. If the debentures purchased by KeyCorp Capital I, HNC Statutory Trust III, Willow Grove Statutory Trust I, HNC Statutory Trust IV, Westbank Capital Trust II, or Westbank Capital Trust III are redeemed before they mature, the redemption price will be the principal amount, plus any accrued but unpaid interest. If the debentures purchased by KeyCorp Capital II or KeyCorp Capital III are redeemed before they mature, the redemption price will be the greater of: (i) the principal amount, plus any accrued but unpaid interest, or (ii) the sum of the present values of principal and interest payments discounted at the Treasury Rate (as defined in the applicable indenture), plus 20 basis points for KeyCorp Capital II or 25 basis points for KeyCorp Capital III, or 50 basis points in the case of redemption upon either a tax or a capital treatment event for either KeyCorp Capital II or KeyCorp Capital III, plus any accrued but unpaid interest. (c) The interest rates for the trust preferred securities issued by KeyCorp Capital II and KeyCorp Capital III are fixed. The trust preferred securities issued by KeyCorp Capital I have a floating interest rate, equal to three-month LIBOR plus 74 basis points, that reprices quarterly. The trust preferred securities issued by HNC Statutory Trust III have a floating interest rate, equal to three-month LIBOR plus 140 basis points, that reprices quarterly. The trust preferred securities issued by Willow Grove Statutory Trust I have a floating interest rate, equal to three-month LIBOR plus 131 basis points, that reprices quarterly. The trust preferred securities issued by HNC Statutory Trust IV have a floating interest rate, equal to three-month LIBOR plus 128 basis points, that reprices quarterly. The trust preferred securities issued by Westbank Capital Trust II and Westbank Capital Trust III each have a floating interest rate, equal to three-month LIBOR plus 219 basis points, that reprices quarterly. The total interest rates are weighted-average rates. (d) Certain trust preferred securities include basis adjustments related to fair value hedges totaling $21 million at March 31, 2023, and $17 million at December 31, 2022. See Note 7 (“Derivatives and Hedging Activities”) for an explanation of fair value hedges.

Contingent Liabilities and Gu_2

Contingent Liabilities and Guarantees (Tables)	3 Months Ended
	Mar. 31, 2023
Commitments and Contingencies Disclosure [Abstract]
Schedule of Guarantees	The following table shows the types of guarantees that we had outstanding at March 31, 2023. Information pertaining to the basis for determining the liabilities recorded in connection with these guarantees is included in Note 1 (“Summary of Significant Accounting Policies”) under the heading “Contingencies and Guarantees” beginning on page 113 of our 2022 Form 10-K. March 31, 2023 Maximum Potential Undiscounted Future Payments Liability Recorded Dollars in millions Financial guarantees: Standby letters of credit $ 4,838 $ 90 Recourse agreement with FNMA 6,812 83 Residential mortgage reserve 3,279 13 Written put options (a) 3,725 248 Total $ 18,654 $ 434 (a) The maximum potential undiscounted future payments represent notional amounts of derivatives qualifying as guarantees.

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Income (Tables)	3 Months Ended
	Mar. 31, 2023
Equity [Abstract]
Schedule of Changes in AOCI	Our changes in AOCI for the three months ended March 31, 2023, and March 31, 2022, are as follows: Dollars in millions Unrealized gains (losses) on securities available for sale Unrealized gains (losses) on derivative financial instruments Net pension and postretirement benefit costs Total Balance at December 31, 2022 $ (4,895) $ (1,124) $ (276) $ (6,295) Other comprehensive income before reclassification, net of income taxes 575 80 (1) 654 Amounts reclassified from AOCI, net of income taxes (a) — 165 2 167 Net current-period other comprehensive income, net of income taxes 575 245 1 821 Balance at March 31, 2023 $ (4,320) $ (879) $ (275) $ (5,474) Balance at December 31, 2021 $ (403) $ 88 $ (271) $ (586) Other comprehensive income before reclassification, net of income taxes (1,784) (511) (1) (2,296) Amounts reclassified from AOCI, net of income taxes (a) — (50) 3 (47) Net current-period other comprehensive income, net of income taxes (1,784) (561) 2 (2,343) Balance at March 31, 2022 $ (2,187) $ (473) $ (269) $ (2,929) (a) See table below for details about these reclassifications.
Schedule of Reclassifications Out of AOCI	Our reclassifications out of AOCI for the three months ended March 31, 2023, and March 31, 2022, are as follows: Three months ended March 31, Affected Line Item in the Consolidated Statement of Income Dollars in millions 2023 2022 Unrealized gains (losses) on derivative financial instruments Interest rate $ (215) $ 64 Interest income — Loans Interest rate (1) (1) Interest expense — Long-term debt Interest rate — 2 Investment banking and debt placement fees (216) 65 Income (loss) from continuing operations before income taxes (51) 15 Income taxes $ (165) $ 50 Income (loss) from continuing operations Net pension and postretirement benefit costs Amortization of losses $ (3) $ (4) Other expense Settlement loss — — Other expense (3) (4) Income (loss) from continuing operations before income taxes (1) (1) Income taxes $ (2) $ (3) Income (loss) from continuing operations

Shareholders' Equity (Tables)

Shareholders' Equity (Tables)	3 Months Ended
	Mar. 31, 2023
Equity [Abstract]
Schedule of Stockholders Equity	The following table summarizes our preferred stock at March 31, 2023. Preferred stock series Amount outstanding (in millions) Shares authorized and outstanding Par value Liquidation preference Ownership interest per depositary share Liquidation preference per depositary share First quarter 2023 dividends paid per depositary share 5.000% Fixed-to-Floating Rate Perpetual Noncumulative Series D $ 525 21,000 $ 1 $ 25,000 1/25th $ 1,000 $ 12.50 6.125% Fixed-to-Floating Rate Perpetual Noncumulative Series E 500 500,000 1 1,000 1/40th 25 .382813 5.650% Fixed Rate Perpetual Noncumulative Series F 425 425,000 1 1,000 1/40th 25 .353125 5.625% Fixed Rate Perpetual Non-Cumulative Series G 450 450,000 1 1,000 1/40th 25 .351563 6.200% Fixed Rate Reset Perpetual Non-Cumulative Series H 600 600,000 1 1,000 1/40th 25 .387500

Business Segment Reporting (Tab

Business Segment Reporting (Tables)	3 Months Ended
	Mar. 31, 2023
Segment Reporting [Abstract]
Schedule of Selected Financial Data for Our Business Segments	The table below shows selected financial data for our business segments for the three-month periods ended March 31, 2023, and March 31, 2022. Capital is assigned to each business segment based on a combination of regulatory and economic equity. Three months ended March 31, Consumer Bank Commercial Bank Other Total Key Dollars in millions 2023 2022 2023 2022 2023 2022 2023 2022 SUMMARY OF OPERATIONS Net interest income (TE) $ 614 $ 543 $ 475 $ 414 $ 17 $ 63 $ 1,106 $ 1,020 Noninterest income 228 256 366 394 14 26 608 676 Total revenue (TE) (a) 842 799 841 808 31 89 1,714 1,696 Provision for credit losses 60 43 80 41 (1) (1) 139 83 Depreciation and amortization expense 21 21 23 31 17 18 61 70 Other noninterest expense 654 642 405 383 56 (25) 1,115 1,000 Income (loss) from continuing operations before income taxes (TE) 107 93 333 353 (41) 97 399 543 Allocated income taxes and TE adjustments 26 22 69 69 (7) 5 88 96 Income (loss) from continuing operations 81 71 264 284 (34) 92 311 447 Income (loss) from discontinued operations, net of taxes — — — — 1 1 1 1 Net income (loss) 81 71 264 284 (33) 93 312 448 Less: Net income (loss) attributable to noncontrolling interests — — — — — — — — Net income (loss) attributable to Key $ 81 $ 71 $ 264 $ 284 $ (33) $ 93 $ 312 $ 448 AVERAGE BALANCES (b) Loans and leases $ 43,086 $ 38,654 $ 76,306 $ 64,684 $ 445 $ 424 $ 119,837 $ 103,762 Total assets (a) 45,911 41,786 85,852 74,816 59,088 65,987 190,851 182,589 Deposits 84,492 91,516 52,185 57,241 6,728 1,406 143,405 150,163 OTHER FINANCIAL DATA Net loan charge-offs (b) $ 24 $ 22 $ 21 $ 11 $ — $ — $ 45 $ 33 Return on average allocated equity (b) 8.98 % 8.02 % 10.39 % 13.26 % 95.76 % 8.29 % 9.13 % 10.80 % Return on average allocated equity 8.98 8.02 10.39 13.26 92.94 8.38 9.16 10.83 Average full-time equivalent employees (c) 8,046 7,885 2,517 2,416 7,657 6,808 18,220 17,109 (a) Substantially all revenue generated by our major business segments is derived from clients that reside in the United States. Substantially all long-lived assets, including premises and equipment, capitalized software, and goodwill held by our major business segments, are located in the United States. (b) From continuing operations. (c) The number of average full-time equivalent employees was not adjusted for discontinued operations.

Revenue from Contracts with C_2

Revenue from Contracts with Customers (Tables)	3 Months Ended
	Mar. 31, 2023
Revenue from Contract with Customer [Abstract]
Schedule of Disaggregation of Revenue	The following table represents a disaggregation of revenue from contracts with customers, by business segment, for the three-month periods ended March 31, 2023, and March 31, 2022. The development and application of the methodologies that we use to allocate items among our business segments is a dynamic process. Accordingly, financial results may be revised periodically to reflect enhanced alignment of expense base allocations drivers, changes in the risk profile of a particular business, or changes in our organizational structure. Three months ended March 31, 2023 Three months ended March 31, 2022 Dollars in millions Consumer Bank Commercial Bank Total Contract Revenue Consumer Bank Commercial Bank Total Contract Revenue NONINTEREST INCOME Trust and investment services income $ 100 $ 16 $ 116 $ 106 $ 18 $ 124 Investment banking and debt placement fees — 113 113 — 109 109 Services charges on deposit accounts 39 28 67 55 36 91 Cards and payments income 45 32 77 42 36 78 Other noninterest income 2 — 2 2 — 2 Total revenue from contracts with customers $ 186 $ 189 $ 375 $ 205 $ 199 $ 404 Other noninterest income (a) $ 219 $ 246 Noninterest income from Other (b) 14 26 Total noninterest income $ 608 $ 676 (a) Noninterest income considered earned outside the scope of contracts with customers. (b) Other includes other segments that consists of corporate treasury, our principal investing unit, and various exit portfolios as well as reconciling items which primarily represents the unallocated portion of nonearning assets of corporate support functions. Charges related to the funding of these assets are part of net interest income and are allocated to the business segments through noninterest expense. Reconciling items also includes intercompany eliminations and certain items that are not allocated to the business segments because they do not reflect their normal operations. Refer to Note 20 (“Business Segment Reporting”) for more information.

Basis of Presentation and Acc_4

Basis of Presentation and Accounting Policies - Narrative (Details)	3 Months Ended
	Mar. 31, 2023 segment
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of loan segment portfolios	2

Earnings Per Common Share (Deta

Earnings Per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions		3 Months Ended
		Mar. 31, 2023	Mar. 31, 2022
EARNINGS
Income (loss) from continuing operations		$ 311	$ 447
Less: Net income (loss) attributable to noncontrolling interests		0	0
Income (loss) from continuing operations attributable to Key		311	447
Less: Dividends on Preferred Stock		36	27
Income (loss) from continuing operations attributable to Key common shareholders		275	420
Income (loss) from discontinued operations, net of taxes		1	1
Net income (loss) attributable to Key common shareholders		$ 276	$ 421
WEIGHTED-AVERAGE COMMON SHARES
Weighted-average Common Shares outstanding (in shares)		926,490	922,941
Effect of Common Share options and other stock awards (in shares)		7,314	10,692
Weighted-average Common Shares and potential Common Shares outstanding (in shares)	[1]	933,804	933,634
EARNINGS PER COMMON SHARE
Income (loss) from continuing operations attributable to Key common shareholders (in usd per share)		$ 0.30	$ 0.45
Income (loss) from discontinued operations, net of taxes (in usd per share)		0	0
Net income (loss) attributable to Key common shareholders (in usd per share)	[2]	0.30	0.46
Income (loss) from continuing operations attributable to Key common shareholders - assuming dilution (in usd per share)		0.30	0.45
Income (loss) from discontinued operations, net of taxes - assuming dilution (in usd per share)		0	0
Net income (loss) attributable to Key common shareholders (in usd per share)	[2]	$ 0.30	$ 0.45
[1]Assumes conversion of Common Share options and other stock awards and/or convertible preferred stock, as applicable.[2]EPS may not foot due to rounding.

Loan Portfolio (Details)

Loan Portfolio (Details) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	$ 119,971	$ 119,394
Accrued interest	487	417
Total commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	83,266	82,465
Accrued interest	353	314
Total consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	36,705	36,929
Accrued interest	134	103
Commercial and industrial | Total commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	60,565	59,647
Commercial mortgage | Total commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	16,348	16,352
Construction | Total commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	2,590	2,530
Total commercial real estate loans | Total commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	18,938	18,882
Commercial lease financing | Total commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	3,763	3,936
Real estate — residential mortgage | Total consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	21,632	21,401
Home equity loans | Total consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	7,706	7,951
Total residential — prime loans | Total consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	29,338	29,352
Consumer direct loans | Total consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	6,359	6,508
Credit cards | Total consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	969	1,026
Consumer indirect loans | Total consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	39	43
Credit cards | Total commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	185	172
Credit cards | Total consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	969	1,026
Collateral Pledged | Total commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	6	8
Education Lending | Discontinued operations
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	$ 407	$ 434

Asset Quality - Schedule of Cha

Asset Quality - Schedule of Changes in Allowance for Loan and Lease Losses by Loan Category (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	$ 1,337	$ 1,061
Provision	88	77
Charge-offs	(60)	(51)
Recoveries	15	18
Ending balance	1,380	1,105
Total ALLL, including discontinued operations, beginning balance	1,358	1,089
Total provision, including discontinued operations	87	78
Total charge-offs, including discontinued operations	(61)	(53)
Total recoveries, including discontinued operations	15	18
Total ALLL — including discontinued operations	1,399	1,132
Provision (credit) for losses on lending-related commitments	51	6
Total commercial loans
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	864	688
Provision	50	53
Charge-offs	(39)	(36)
Recoveries	9	12
Ending balance	884	717
Total consumer loans
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	473	373
Provision	38	24
Charge-offs	(21)	(15)
Recoveries	6	6
Ending balance	496	388
Commercial and Industrial | Total commercial loans
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	601	445
Provision	31	63
Charge-offs	(35)	(30)
Recoveries	8	11
Ending balance	605	489
Commercial mortgage | Total commercial loans
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	203	182
Provision	20	(7)
Charge-offs	(5)	(4)
Recoveries	0	1
Ending balance	218	172
Construction | Total commercial loans
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	28	29
Provision	0	(4)
Charge-offs	0	0
Recoveries	0	0
Ending balance	28	25
Total commercial real estate loans | Total commercial loans
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	231	211
Provision	20	(11)
Charge-offs	(5)	(4)
Recoveries	0	1
Ending balance	246	197
Commercial lease financing | Total commercial loans
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	32	32
Provision	(1)	1
Charge-offs	1	(2)
Recoveries	1	0
Ending balance	33	31
Real estate — residential mortgage | Total consumer loans
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	196	95
Provision	15	12
Charge-offs	0	1
Recoveries	1	0
Ending balance	212	108
Home equity loans | Total consumer loans
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	98	110
Provision	(2)	(6)
Charge-offs	(1)	(1)
Recoveries	1	1
Ending balance	96	104
Consumer direct loans | Total consumer loans
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	111	105
Provision	14	11
Charge-offs	(11)	(7)
Recoveries	2	2
Ending balance	116	111
Credit cards | Total consumer loans
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	66	61
Provision	13	7
Charge-offs	(9)	(7)
Recoveries	1	2
Ending balance	71	63
Consumer indirect loans | Total consumer loans
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	2	2
Provision	(2)	0
Charge-offs	0	(1)
Recoveries	1	1
Ending balance	1	2
Discontinued operations
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	21	28
Provision	(1)	1
Charge-offs	(1)	(2)
Recoveries	0	0
Ending balance	$ 19	$ 27

Asset Quality - Narrative (Deta

Asset Quality - Narrative (Details) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2023 USD ($) loan	Mar. 31, 2022 USD ($) loan	Dec. 31, 2022 loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of carrying amount of our commercial nonperforming loans outstanding (as a percent)	59%
Percentage of nonperforming loans outstanding face value (as a percent)	70%
Percentage of loans held for sale and other nonperforming assets (as a percent)	78%
Net reduction to interest income	$ 8	$ 5
Number of loan modification | loan	136		4,205
Loan restructuring trial modifications amount	$ 17
Commitments outstanding to lend additional funds to borrowers (less than $1 million)		1
Financial receivable, modifications, subsequent default, recorded investment		$ 8
Financing Receivable, Modified, Commitment to Lend	23
Non-performing Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonperforming loans on nonaccrual status with no allowance	220
Number of loan modification | loan			1,240
Total commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
TDRs, period for default (in days)		90 days
Number of loans | loan		4
Total commercial loans | Commercial and Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financial receivable, modifications, subsequent default, recorded investment	4
Total commercial loans | Non-performing Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of loan modification | loan			31
Total commercial loans | Non-performing Loans | Commercial and Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of loan modification | loan			27
Total commercial loans | Continuing Operations
Accounts, Notes, Loans and Financing Receivable [Line Items]
Increase (decrease) in ALLL	$ 20
Increase (decrease) in ALLL (as a percent)	2.30%
Total consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financial receivable, modifications, subsequent default, recorded investment		$ 126
TDRs, period for default (in days)		60 days
Number of loans | loan		38
Total consumer loans | Non-performing Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of loan modification | loan			1,209
Total consumer loans | Continuing Operations
Accounts, Notes, Loans and Financing Receivable [Line Items]
Increase (decrease) in ALLL	$ 23
Increase (decrease) in ALLL (as a percent)	4.90%

Asset Quality - Schedule of Com

Asset Quality - Schedule of Commercial Credit Exposure (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Dec. 31, 2022
Financing Receivable, Credit Quality Indicator [Line Items]
Total	$ 119,971	$ 119,394
Accrued interest	487	417
Total commercial loans
Financing Receivable, Credit Quality Indicator [Line Items]
Current	2,222
Writeoff, current period	1
One year prior	17,890	18,203
Writeoff, one year period	1
Two years prior	13,516	14,465
Writeoff, two year period	4
Three years prior	5,392	5,657
Writeoff, three year period	1
Four years prior	5,272	5,678
Writeoff, four year period	0
Five years prior		3,213
Prior	9,666
Writeoff, prior	13
Prior		7,310
Revolving Loans Amortized Cost Basis	29,024	27,707
Writeoff, Revolving Loans Amortized Cost Basis	19
Revolving Loans Converted to Term Loans Amortized Cost Basis	284	232
Revolving Loans Converted to Term Loans Amortized Cost Basis, writeoff	0
Total	83,266	82,465
Writeoff, total	39
Accrued interest	353	314
Total commercial loans | Commercial and Industrial
Financing Receivable, Credit Quality Indicator [Line Items]
Current	1,633
Writeoff, current period	1
One year prior	11,488	11,654
Writeoff, one year period	1
Two years prior	8,148	8,995
Writeoff, two year period	4
Three years prior	3,514	3,676
Writeoff, three year period	1
Four years prior	2,699	3,003
Writeoff, four year period	0
Five years prior		2,036
Prior	5,033
Writeoff, prior	11
Prior		3,532
Revolving Loans Amortized Cost Basis	27,862	26,588
Writeoff, Revolving Loans Amortized Cost Basis	17
Revolving Loans Converted to Term Loans Amortized Cost Basis	188	163
Revolving Loans Converted to Term Loans Amortized Cost Basis, writeoff	0
Total	60,565	59,647
Writeoff, total	35
Total commercial loans | Commercial and Industrial | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current	1,605
One year prior	11,348	11,580
Two years prior	7,729	8,636
Three years prior	3,365	3,540
Four years prior	2,544	2,839
Five years prior		1,787
Prior	4,593
Prior		3,307
Revolving Loans Amortized Cost Basis	26,824	25,565
Revolving Loans Converted to Term Loans Amortized Cost Basis	165	138
Total	58,173	57,392
Total commercial loans | Commercial and Industrial | Criticized (Accruing)
Financing Receivable, Credit Quality Indicator [Line Items]
Current	24
One year prior	106	40
Two years prior	416	357
Three years prior	143	131
Four years prior	152	160
Five years prior		227
Prior	407
Prior		205
Revolving Loans Amortized Cost Basis	951	936
Revolving Loans Converted to Term Loans Amortized Cost Basis	23	25
Total	2,222	2,081
Total commercial loans | Commercial and Industrial | Criticized (Nonaccruing)
Financing Receivable, Credit Quality Indicator [Line Items]
Current	4
One year prior	34	34
Two years prior	3	2
Three years prior	6	5
Four years prior	3	4
Five years prior		22
Prior	33
Prior		20
Revolving Loans Amortized Cost Basis	87	87
Revolving Loans Converted to Term Loans Amortized Cost Basis	0	0
Total	170	174
Total commercial loans | Commercial mortgage
Financing Receivable, Credit Quality Indicator [Line Items]
Current	445
Writeoff, current period	0
One year prior	4,618	4,792
Writeoff, one year period	0
Two years prior	3,726	3,830
Writeoff, two year period	0
Three years prior	1,005	1,013
Writeoff, three year period	0
Four years prior	1,862	1,902
Writeoff, four year period	0
Five years prior		862
Prior	3,453
Writeoff, prior	3
Prior		2,768
Revolving Loans Amortized Cost Basis	1,151	1,118
Writeoff, Revolving Loans Amortized Cost Basis	2
Revolving Loans Converted to Term Loans Amortized Cost Basis	88	67
Revolving Loans Converted to Term Loans Amortized Cost Basis, writeoff	0
Total	16,348	16,352
Writeoff, total	5
Total commercial loans | Commercial mortgage | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current	445
One year prior	4,602	4,786
Two years prior	3,663	3,817
Three years prior	959	992
Four years prior	1,776	1,853
Five years prior		788
Prior	3,218
Prior		2,578
Revolving Loans Amortized Cost Basis	1,087	1,068
Revolving Loans Converted to Term Loans Amortized Cost Basis	88	67
Total	15,838	15,949
Total commercial loans | Commercial mortgage | Criticized (Accruing)
Financing Receivable, Credit Quality Indicator [Line Items]
Current	0
One year prior	16	6
Two years prior	63	13
Three years prior	45	20
Four years prior	85	48
Five years prior		73
Prior	209
Prior		175
Revolving Loans Amortized Cost Basis	33	47
Revolving Loans Converted to Term Loans Amortized Cost Basis	0	0
Total	451	382
Total commercial loans | Commercial mortgage | Criticized (Nonaccruing)
Financing Receivable, Credit Quality Indicator [Line Items]
Current	0
One year prior	0	0
Two years prior	0	0
Three years prior	1	1
Four years prior	1	1
Five years prior		1
Prior	26
Prior		15
Revolving Loans Amortized Cost Basis	31	3
Revolving Loans Converted to Term Loans Amortized Cost Basis	0	0
Total	59	21
Total commercial loans | Construction
Financing Receivable, Credit Quality Indicator [Line Items]
Current	13
Writeoff, current period	0
One year prior	779	703
Writeoff, one year period	0
Two years prior	947	896
Writeoff, two year period	0
Three years prior	393	450
Writeoff, three year period	0
Four years prior	274	294
Writeoff, four year period	0
Five years prior		132
Prior	165
Writeoff, prior	0
Prior		52
Revolving Loans Amortized Cost Basis	11	1
Writeoff, Revolving Loans Amortized Cost Basis	0
Revolving Loans Converted to Term Loans Amortized Cost Basis	8	2
Revolving Loans Converted to Term Loans Amortized Cost Basis, writeoff	0
Total	2,590	2,530
Writeoff, total	0
Total commercial loans | Construction | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current	13
One year prior	774	698
Two years prior	947	895
Three years prior	376	445
Four years prior	231	262
Five years prior		107
Prior	114
Prior		48
Revolving Loans Amortized Cost Basis	11	1
Revolving Loans Converted to Term Loans Amortized Cost Basis	6	0
Total	2,472	2,456
Total commercial loans | Construction | Criticized (Accruing)
Financing Receivable, Credit Quality Indicator [Line Items]
Current	0
One year prior	5	5
Two years prior	0	1
Three years prior	17	5
Four years prior	43	32
Five years prior		25
Prior	51
Prior		4
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term Loans Amortized Cost Basis	2	2
Total	118	74
Total commercial loans | Construction | Criticized (Nonaccruing)
Financing Receivable, Credit Quality Indicator [Line Items]
Current	0
One year prior	0	0
Two years prior	0	0
Three years prior	0	0
Four years prior	0	0
Five years prior		0
Prior	0
Prior		0
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term Loans Amortized Cost Basis	0	0
Total	0	0
Total commercial loans | Commercial lease financing
Financing Receivable, Credit Quality Indicator [Line Items]
Current	131
Writeoff, current period	0
One year prior	1,005	1,054
Writeoff, one year period	0
Two years prior	695	744
Writeoff, two year period	0
Three years prior	480	518
Writeoff, three year period	0
Four years prior	437	479
Writeoff, four year period	0
Five years prior		183
Prior	1,015
Writeoff, prior	(1)
Prior		958
Revolving Loans Amortized Cost Basis		0
Writeoff, Revolving Loans Amortized Cost Basis	0
Revolving Loans Converted to Term Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term Loans Amortized Cost Basis, writeoff	0
Total	3,763	3,936
Writeoff, total	(1)
Total commercial loans | Commercial lease financing | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current	131
One year prior	982	1,039
Two years prior	690	743
Three years prior	470	509
Four years prior	427	467
Five years prior		174
Prior	1,000
Prior		947
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term Loans Amortized Cost Basis	0	0
Total	3,700	3,879
Total commercial loans | Commercial lease financing | Criticized (Accruing)
Financing Receivable, Credit Quality Indicator [Line Items]
Current	0
One year prior	23	15
Two years prior	5	1
Three years prior	10	9
Four years prior	10	12
Five years prior		9
Prior	14
Prior		10
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term Loans Amortized Cost Basis	0	0
Total	62	56
Total commercial loans | Commercial lease financing | Criticized (Nonaccruing)
Financing Receivable, Credit Quality Indicator [Line Items]
Current	0
One year prior	0	0
Two years prior	0	0
Three years prior	0	0
Four years prior	0	0
Five years prior		0
Prior	1
Prior		1
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term Loans Amortized Cost Basis	0	0
Total	$ 1	$ 1

Asset Quality - Schedule of Con

Asset Quality - Schedule of Consumer Credit Exposure (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Dec. 31, 2022
Financing Receivable, Credit Quality Indicator [Line Items]
Total	$ 119,971	$ 119,394
Accrued interest	487	417
Total consumer loans
Financing Receivable, Credit Quality Indicator [Line Items]
Current	636
Writeoff, current period	0
One year prior	8,631	8,775
Writeoff, one year period	2
Two years prior	13,223	13,193
Writeoff, two year period	2
Three years prior	4,711	4,933
Writeoff, three year period	2
Four years prior	1,477	1,565
Writeoff, four year period	2
Prior	2,600
Writeoff, prior	1
Five years prior		311
Prior		2,490
Revolving Loans Amortized Cost Basis	4,879	5,101
Writeoff, Revolving Loans Amortized Cost Basis	12
Revolving Loans Converted to Term Loans Amortized Cost Basis	548	561
Revolving Loans Converted to Term Loans Amortized Cost Basis, writeoff	0
Total	36,705	36,929
Total commercial loan current period gross write-offs	21
Accrued interest	134	103
Total consumer loans | Real estate — residential mortgage
Financing Receivable, Credit Quality Indicator [Line Items]
Current	451
Writeoff, current period	0
One year prior	6,557	6,594
Writeoff, one year period	0
Two years prior	9,587	9,664
Writeoff, two year period	0
Three years prior	2,841	2,884
Writeoff, three year period	0
Four years prior	742	757
Writeoff, four year period	0
Prior	1,453
Writeoff, prior	0
Five years prior		108
Prior		1,393
Revolving Loans Amortized Cost Basis	1	1
Writeoff, Revolving Loans Amortized Cost Basis	0
Revolving Loans Converted to Term Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term Loans Amortized Cost Basis, writeoff	0
Total	21,632	21,401
Total commercial loan current period gross write-offs	0
Total consumer loans | Real estate — residential mortgage | 750 and above
Financing Receivable, Credit Quality Indicator [Line Items]
Current	332
One year prior	5,412	5,205
Two years prior	8,654	8,702
Three years prior	2,546	2,584
Four years prior	614	636
Prior	1,015
Five years prior		64
Prior		978
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term Loans Amortized Cost Basis	0	0
Total	18,573	18,169
Total consumer loans | Real estate — residential mortgage | 660 to 749
Financing Receivable, Credit Quality Indicator [Line Items]
Current	114
One year prior	1,031	1,286
Two years prior	895	919
Three years prior	277	282
Four years prior	110	106
Prior	272
Five years prior		28
Prior		260
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term Loans Amortized Cost Basis	0	0
Total	2,699	2,881
Total consumer loans | Real estate — residential mortgage | Less than 660
Financing Receivable, Credit Quality Indicator [Line Items]
Current	5
One year prior	51	41
Two years prior	37	42
Three years prior	17	17
Four years prior	18	14
Prior	143
Five years prior		15
Prior		130
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term Loans Amortized Cost Basis	0	0
Total	271	259
Total consumer loans | Real estate — residential mortgage | No Score
Financing Receivable, Credit Quality Indicator [Line Items]
Current	0
One year prior	63	62
Two years prior	1	1
Three years prior	1	1
Four years prior	0	1
Prior	23
Five years prior		1
Prior		25
Revolving Loans Amortized Cost Basis	1	1
Revolving Loans Converted to Term Loans Amortized Cost Basis	0	0
Total	89	92
Total consumer loans | Home equity loans
Financing Receivable, Credit Quality Indicator [Line Items]
Current	6
Writeoff, current period	0
One year prior	215	247
Writeoff, one year period	0
Two years prior	1,557	1,366
Writeoff, two year period	0
Three years prior	841	955
Writeoff, three year period	0
Four years prior	266	303
Writeoff, four year period	0
Prior	876
Writeoff, prior	0
Five years prior		116
Prior		887
Revolving Loans Amortized Cost Basis	3,397	3,516
Writeoff, Revolving Loans Amortized Cost Basis	0
Revolving Loans Converted to Term Loans Amortized Cost Basis	548	561
Revolving Loans Converted to Term Loans Amortized Cost Basis, writeoff	0
Total	7,706	7,951
Total commercial loan current period gross write-offs	0
Total consumer loans | Home equity loans | 750 and above
Financing Receivable, Credit Quality Indicator [Line Items]
Current	0
One year prior	128	146
Two years prior	1,251	1,044
Three years prior	628	736
Four years prior	172	207
Prior	578
Five years prior		74
Prior		617
Revolving Loans Amortized Cost Basis	2,150	2,238
Revolving Loans Converted to Term Loans Amortized Cost Basis	387	398
Total	5,294	5,460
Total consumer loans | Home equity loans | 660 to 749
Financing Receivable, Credit Quality Indicator [Line Items]
Current	5
One year prior	76	83
Two years prior	276	291
Three years prior	186	194
Four years prior	77	79
Prior	206
Five years prior		32
Prior		187
Revolving Loans Amortized Cost Basis	948	974
Revolving Loans Converted to Term Loans Amortized Cost Basis	127	126
Total	1,901	1,966
Total consumer loans | Home equity loans | Less than 660
Financing Receivable, Credit Quality Indicator [Line Items]
Current	0
One year prior	11	11
Two years prior	30	31
Three years prior	27	25
Four years prior	17	17
Prior	90
Five years prior		10
Prior		81
Revolving Loans Amortized Cost Basis	294	300
Revolving Loans Converted to Term Loans Amortized Cost Basis	34	37
Total	503	512
Total consumer loans | Home equity loans | No Score
Financing Receivable, Credit Quality Indicator [Line Items]
Current	1
One year prior	0	7
Two years prior	0	0
Three years prior	0	0
Four years prior	0	0
Prior	2
Five years prior		0
Prior		2
Revolving Loans Amortized Cost Basis	5	4
Revolving Loans Converted to Term Loans Amortized Cost Basis	0	0
Total	8	13
Total consumer loans | Consumer direct loans
Financing Receivable, Credit Quality Indicator [Line Items]
Current	179
Writeoff, current period	0
One year prior	1,859	1,934
Writeoff, one year period	2
Two years prior	2,078	2,161
Writeoff, two year period	2
Three years prior	1,029	1,094
Writeoff, three year period	2
Four years prior	469	505
Writeoff, four year period	2
Prior	233
Writeoff, prior	1
Five years prior		87
Prior		169
Revolving Loans Amortized Cost Basis	512	558
Writeoff, Revolving Loans Amortized Cost Basis	3
Revolving Loans Converted to Term Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term Loans Amortized Cost Basis, writeoff	0
Total	6,359	6,508
Total commercial loan current period gross write-offs	12
Total consumer loans | Consumer direct loans | 750 and above
Financing Receivable, Credit Quality Indicator [Line Items]
Current	81
One year prior	1,296	1,291
Two years prior	1,600	1,632
Three years prior	780	811
Four years prior	332	351
Prior	133
Five years prior		45
Prior		97
Revolving Loans Amortized Cost Basis	96	102
Revolving Loans Converted to Term Loans Amortized Cost Basis	0	0
Total	4,318	4,329
Total consumer loans | Consumer direct loans | 660 to 749
Financing Receivable, Credit Quality Indicator [Line Items]
Current	71
One year prior	449	526
Two years prior	391	434
Three years prior	201	229
Four years prior	106	120
Prior	60
Five years prior		26
Prior		41
Revolving Loans Amortized Cost Basis	196	206
Revolving Loans Converted to Term Loans Amortized Cost Basis	0	0
Total	1,474	1,582
Total consumer loans | Consumer direct loans | Less than 660
Financing Receivable, Credit Quality Indicator [Line Items]
Current	6
One year prior	64	58
Two years prior	60	63
Three years prior	31	32
Four years prior	20	23
Prior	14
Five years prior		7
Prior		9
Revolving Loans Amortized Cost Basis	57	57
Revolving Loans Converted to Term Loans Amortized Cost Basis	0	0
Total	252	249
Total consumer loans | Consumer direct loans | No Score
Financing Receivable, Credit Quality Indicator [Line Items]
Current	21
One year prior	50	59
Two years prior	27	32
Three years prior	17	22
Four years prior	11	11
Prior	26
Five years prior		9
Prior		22
Revolving Loans Amortized Cost Basis	163	193
Revolving Loans Converted to Term Loans Amortized Cost Basis	0	0
Total	315	348
Total consumer loans | Credit cards
Financing Receivable, Credit Quality Indicator [Line Items]
Current	0
Writeoff, current period	0
One year prior	0	0
Writeoff, one year period	0
Two years prior	0	0
Writeoff, two year period	0
Three years prior	0	0
Writeoff, three year period	0
Four years prior	0	0
Writeoff, four year period	0
Prior	0
Writeoff, prior	0
Five years prior		0
Prior		0
Revolving Loans Amortized Cost Basis	969	1,026
Writeoff, Revolving Loans Amortized Cost Basis	9
Revolving Loans Converted to Term Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term Loans Amortized Cost Basis, writeoff	0
Total	969	1,026
Total commercial loan current period gross write-offs	9
Total consumer loans | Credit cards | 750 and above
Financing Receivable, Credit Quality Indicator [Line Items]
Current	0
One year prior	0	0
Two years prior	0	0
Three years prior	0	0
Four years prior	0	0
Prior	0
Five years prior		0
Prior		0
Revolving Loans Amortized Cost Basis	478	524
Revolving Loans Converted to Term Loans Amortized Cost Basis	0	0
Total	478	524
Total consumer loans | Credit cards | 660 to 749
Financing Receivable, Credit Quality Indicator [Line Items]
Current	0
One year prior	0	0
Two years prior	0	0
Three years prior	0	0
Four years prior	0	0
Prior	0
Five years prior		0
Prior		0
Revolving Loans Amortized Cost Basis	395	402
Revolving Loans Converted to Term Loans Amortized Cost Basis	0	0
Total	395	402
Total consumer loans | Credit cards | Less than 660
Financing Receivable, Credit Quality Indicator [Line Items]
Current	0
One year prior	0	0
Two years prior	0	0
Three years prior	0	0
Four years prior	0	0
Prior	0
Five years prior		0
Prior		0
Revolving Loans Amortized Cost Basis	95	99
Revolving Loans Converted to Term Loans Amortized Cost Basis	0	0
Total	95	99
Total consumer loans | Credit cards | No Score
Financing Receivable, Credit Quality Indicator [Line Items]
Current	0
One year prior	0	0
Two years prior	0	0
Three years prior	0	0
Four years prior	0	0
Prior	0
Five years prior		0
Prior		0
Revolving Loans Amortized Cost Basis	1	1
Revolving Loans Converted to Term Loans Amortized Cost Basis	0	0
Total	1	1
Total consumer loans | Consumer indirect loans
Financing Receivable, Credit Quality Indicator [Line Items]
Current	0
Writeoff, current period	0
One year prior	0	0
Writeoff, one year period	0
Two years prior	1	2
Writeoff, two year period	0
Three years prior	0	0
Writeoff, three year period	0
Four years prior	0	0
Writeoff, four year period	0
Prior	38
Writeoff, prior	0
Five years prior		0
Prior		41
Revolving Loans Amortized Cost Basis	0	0
Writeoff, Revolving Loans Amortized Cost Basis	0
Revolving Loans Converted to Term Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term Loans Amortized Cost Basis, writeoff	0
Total	39	43
Total commercial loan current period gross write-offs	0
Total consumer loans | Consumer indirect loans | 750 and above
Financing Receivable, Credit Quality Indicator [Line Items]
Current	0
One year prior	0	0
Two years prior	1	2
Three years prior	0	0
Four years prior	0	0
Prior	19
Five years prior		0
Prior		19
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term Loans Amortized Cost Basis	0	0
Total	20	21
Total consumer loans | Consumer indirect loans | 660 to 749
Financing Receivable, Credit Quality Indicator [Line Items]
Current	0
One year prior	0	0
Two years prior	0	0
Three years prior	0	0
Four years prior	0	0
Prior	14
Five years prior		0
Prior		15
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term Loans Amortized Cost Basis	0	0
Total	14	15
Total consumer loans | Consumer indirect loans | Less than 660
Financing Receivable, Credit Quality Indicator [Line Items]
Current	0
One year prior	0	0
Two years prior	0	0
Three years prior	0	0
Four years prior	0	0
Prior	5
Five years prior		0
Prior		7
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term Loans Amortized Cost Basis	0	0
Total	5	7
Total consumer loans | Consumer indirect loans | No Score
Financing Receivable, Credit Quality Indicator [Line Items]
Current	0
One year prior	0	0
Two years prior	0	0
Three years prior	0	0
Four years prior	0	0
Prior	0
Five years prior		0
Prior		0
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term Loans Amortized Cost Basis	0	0
Total	$ 0	$ 0

Asset Quality - Schedule of Agi

Asset Quality - Schedule of Aging Analysis of Past Due and Current Loans (Details) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Financing Receivable, Past Due [Line Items]
Total	$ 119,971	$ 119,394
Accrued interest	487	417
Total commercial loans
Financing Receivable, Past Due [Line Items]
Total	83,266	82,465
Accrued interest	353	314
Total consumer loans
Financing Receivable, Past Due [Line Items]
Total	36,705	36,929
Accrued interest	134	103
Non-performing Loans
Financing Receivable, Past Due [Line Items]
Total	416	387
Non-performing Loans | Total commercial loans
Financing Receivable, Past Due [Line Items]
Total	230	196
Non-performing Loans | Total consumer loans
Financing Receivable, Past Due [Line Items]
Total	186	191
Current (b)
Financing Receivable, Past Due [Line Items]
Total	119,336	118,767
Current (b) | Total commercial loans
Financing Receivable, Past Due [Line Items]
Total	82,909	82,129
Current (b) | Total consumer loans
Financing Receivable, Past Due [Line Items]
Total	36,427	36,638
30-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	92	122
30-89 Days Past Due | Total commercial loans
Financing Receivable, Past Due [Line Items]
Total	43	62
30-89 Days Past Due | Total consumer loans
Financing Receivable, Past Due [Line Items]
Total	49	60
60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	72	58
60-89 Days Past Due | Total commercial loans
Financing Receivable, Past Due [Line Items]
Total	52	36
60-89 Days Past Due | Total consumer loans
Financing Receivable, Past Due [Line Items]
Total	20	22
90 and Greater Days Past Due
Financing Receivable, Past Due [Line Items]
Total	55	60
90 and Greater Days Past Due | Total commercial loans
Financing Receivable, Past Due [Line Items]
Total	32	42
90 and Greater Days Past Due | Total consumer loans
Financing Receivable, Past Due [Line Items]
Total	23	18
Total Past Due and Non-performing Loans (b)
Financing Receivable, Past Due [Line Items]
Total	635	627
Total Past Due and Non-performing Loans (b) | Total commercial loans
Financing Receivable, Past Due [Line Items]
Total	357	336
Total Past Due and Non-performing Loans (b) | Total consumer loans
Financing Receivable, Past Due [Line Items]
Total	278	291
Total commercial real estate loans | Total commercial loans
Financing Receivable, Past Due [Line Items]
Total	18,938	18,882
Total commercial real estate loans | Non-performing Loans | Total commercial loans
Financing Receivable, Past Due [Line Items]
Total	59	21
Total commercial real estate loans | Current (b) | Total commercial loans
Financing Receivable, Past Due [Line Items]
Total	18,855	18,835
Total commercial real estate loans | 30-89 Days Past Due | Total commercial loans
Financing Receivable, Past Due [Line Items]
Total	13	16
Total commercial real estate loans | 60-89 Days Past Due | Total commercial loans
Financing Receivable, Past Due [Line Items]
Total	4	2
Total commercial real estate loans | 90 and Greater Days Past Due | Total commercial loans
Financing Receivable, Past Due [Line Items]
Total	7	8
Total commercial real estate loans | Total Past Due and Non-performing Loans (b) | Total commercial loans
Financing Receivable, Past Due [Line Items]
Total	83	47
Commercial and industrial | Total commercial loans
Financing Receivable, Past Due [Line Items]
Total	60,565	59,647
Commercial and industrial | Non-performing Loans | Total commercial loans
Financing Receivable, Past Due [Line Items]
Total	170	174
Commercial and industrial | Current (b) | Total commercial loans
Financing Receivable, Past Due [Line Items]
Total	60,299	59,366
Commercial and industrial | 30-89 Days Past Due | Total commercial loans
Financing Receivable, Past Due [Line Items]
Total	29	43
Commercial and industrial | 60-89 Days Past Due | Total commercial loans
Financing Receivable, Past Due [Line Items]
Total	44	33
Commercial and industrial | 90 and Greater Days Past Due | Total commercial loans
Financing Receivable, Past Due [Line Items]
Total	23	31
Commercial and industrial | Total Past Due and Non-performing Loans (b) | Total commercial loans
Financing Receivable, Past Due [Line Items]
Total	266	281
Commercial mortgage | Total commercial loans
Financing Receivable, Past Due [Line Items]
Total	16,348	16,352
Commercial mortgage | Non-performing Loans | Total commercial loans
Financing Receivable, Past Due [Line Items]
Total	59	21
Commercial mortgage | Current (b) | Total commercial loans
Financing Receivable, Past Due [Line Items]
Total	16,265	16,305
Commercial mortgage | 30-89 Days Past Due | Total commercial loans
Financing Receivable, Past Due [Line Items]
Total	13	16
Commercial mortgage | 60-89 Days Past Due | Total commercial loans
Financing Receivable, Past Due [Line Items]
Total	4	2
Commercial mortgage | 90 and Greater Days Past Due | Total commercial loans
Financing Receivable, Past Due [Line Items]
Total	7	8
Commercial mortgage | Total Past Due and Non-performing Loans (b) | Total commercial loans
Financing Receivable, Past Due [Line Items]
Total	83	47
Construction | Total commercial loans
Financing Receivable, Past Due [Line Items]
Total	2,590	2,530
Construction | Non-performing Loans | Total commercial loans
Financing Receivable, Past Due [Line Items]
Total	0	0
Construction | Current (b) | Total commercial loans
Financing Receivable, Past Due [Line Items]
Total	2,590	2,530
Construction | 30-89 Days Past Due | Total commercial loans
Financing Receivable, Past Due [Line Items]
Total	0	0
Construction | 60-89 Days Past Due | Total commercial loans
Financing Receivable, Past Due [Line Items]
Total	0	0
Construction | 90 and Greater Days Past Due | Total commercial loans
Financing Receivable, Past Due [Line Items]
Total	0	0
Construction | Total Past Due and Non-performing Loans (b) | Total commercial loans
Financing Receivable, Past Due [Line Items]
Total	0	0
Commercial lease financing | Total commercial loans
Financing Receivable, Past Due [Line Items]
Total	3,763	3,936
Commercial lease financing | Non-performing Loans | Total commercial loans
Financing Receivable, Past Due [Line Items]
Total	1	1
Commercial lease financing | Current (b) | Total commercial loans
Financing Receivable, Past Due [Line Items]
Total	3,755	3,928
Commercial lease financing | 30-89 Days Past Due | Total commercial loans
Financing Receivable, Past Due [Line Items]
Total	1	3
Commercial lease financing | 60-89 Days Past Due | Total commercial loans
Financing Receivable, Past Due [Line Items]
Total	4	1
Commercial lease financing | 90 and Greater Days Past Due | Total commercial loans
Financing Receivable, Past Due [Line Items]
Total	2	3
Commercial lease financing | Total Past Due and Non-performing Loans (b) | Total commercial loans
Financing Receivable, Past Due [Line Items]
Total	8	8
Real estate — residential mortgage | Total consumer loans
Financing Receivable, Past Due [Line Items]
Total	21,632	21,401
Real estate — residential mortgage | Non-performing Loans | Total consumer loans
Financing Receivable, Past Due [Line Items]
Total	75	77
Real estate — residential mortgage | Current (b) | Total consumer loans
Financing Receivable, Past Due [Line Items]
Total	21,548	21,307
Real estate — residential mortgage | 30-89 Days Past Due | Total consumer loans
Financing Receivable, Past Due [Line Items]
Total	5	13
Real estate — residential mortgage | 60-89 Days Past Due | Total consumer loans
Financing Receivable, Past Due [Line Items]
Total	2	3
Real estate — residential mortgage | 90 and Greater Days Past Due | Total consumer loans
Financing Receivable, Past Due [Line Items]
Total	2	1
Real estate — residential mortgage | Total Past Due and Non-performing Loans (b) | Total consumer loans
Financing Receivable, Past Due [Line Items]
Total	84	94
Home equity loans | Total consumer loans
Financing Receivable, Past Due [Line Items]
Total	7,706	7,951
Home equity loans | Non-performing Loans | Total consumer loans
Financing Receivable, Past Due [Line Items]
Total	104	107
Home equity loans | Current (b) | Total consumer loans
Financing Receivable, Past Due [Line Items]
Total	7,565	7,804
Home equity loans | 30-89 Days Past Due | Total consumer loans
Financing Receivable, Past Due [Line Items]
Total	24	27
Home equity loans | 60-89 Days Past Due | Total consumer loans
Financing Receivable, Past Due [Line Items]
Total	7	8
Home equity loans | 90 and Greater Days Past Due | Total consumer loans
Financing Receivable, Past Due [Line Items]
Total	6	5
Home equity loans | Total Past Due and Non-performing Loans (b) | Total consumer loans
Financing Receivable, Past Due [Line Items]
Total	141	147
Consumer direct loans | Total consumer loans
Financing Receivable, Past Due [Line Items]
Total	6,359	6,508
Consumer direct loans | Non-performing Loans | Total consumer loans
Financing Receivable, Past Due [Line Items]
Total	3	3
Consumer direct loans | Current (b) | Total consumer loans
Financing Receivable, Past Due [Line Items]
Total	6,329	6,478
Consumer direct loans | 30-89 Days Past Due | Total consumer loans
Financing Receivable, Past Due [Line Items]
Total	13	15
Consumer direct loans | 60-89 Days Past Due | Total consumer loans
Financing Receivable, Past Due [Line Items]
Total	7	7
Consumer direct loans | 90 and Greater Days Past Due | Total consumer loans
Financing Receivable, Past Due [Line Items]
Total	7	5
Consumer direct loans | Total Past Due and Non-performing Loans (b) | Total consumer loans
Financing Receivable, Past Due [Line Items]
Total	30	30
Credit cards | Total commercial loans
Financing Receivable, Past Due [Line Items]
Total	185	172
Credit cards | Total consumer loans
Financing Receivable, Past Due [Line Items]
Total	969	1,026
Credit cards | Non-performing Loans | Total consumer loans
Financing Receivable, Past Due [Line Items]
Total	3	3
Credit cards | Current (b) | Total consumer loans
Financing Receivable, Past Due [Line Items]
Total	948	1,007
Credit cards | 30-89 Days Past Due | Total consumer loans
Financing Receivable, Past Due [Line Items]
Total	6	5
Credit cards | 60-89 Days Past Due | Total consumer loans
Financing Receivable, Past Due [Line Items]
Total	4	4
Credit cards | 90 and Greater Days Past Due | Total consumer loans
Financing Receivable, Past Due [Line Items]
Total	8	7
Credit cards | Total Past Due and Non-performing Loans (b) | Total consumer loans
Financing Receivable, Past Due [Line Items]
Total	21	19
Consumer indirect loans | Total consumer loans
Financing Receivable, Past Due [Line Items]
Total	39	43
Consumer indirect loans | Non-performing Loans | Total consumer loans
Financing Receivable, Past Due [Line Items]
Total	1	1
Consumer indirect loans | Current (b) | Total consumer loans
Financing Receivable, Past Due [Line Items]
Total	37	42
Consumer indirect loans | 30-89 Days Past Due | Total consumer loans
Financing Receivable, Past Due [Line Items]
Total	1	0
Consumer indirect loans | 60-89 Days Past Due | Total consumer loans
Financing Receivable, Past Due [Line Items]
Total	0	0
Consumer indirect loans | 90 and Greater Days Past Due | Total consumer loans
Financing Receivable, Past Due [Line Items]
Total	0	0
Consumer indirect loans | Total Past Due and Non-performing Loans (b) | Total consumer loans
Financing Receivable, Past Due [Line Items]
Total	$ 2	$ 1

Asset Quality - Schedule of Mod

Asset Quality - Schedule of Modifications for Borrowers Experiencing Financial Difficulty (Details) $ in Millions	3 Months Ended
	Mar. 31, 2023 USD ($)
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized Cost Basis	$ 93
Amortized Cost Basis (as a percent)	0.08%
Interest Rate Reduction
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized Cost Basis	$ 0
Term Extension
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized Cost Basis	83
Other
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized Cost Basis	1
Combination
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized Cost Basis	9
Total commercial real estate loans | Commercial and Industrial
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized Cost Basis	$ 84
Amortized Cost Basis (as a percent)	0.14%
Total commercial real estate loans | Commercial and Industrial | Interest Rate Reduction
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized Cost Basis	$ 0
Total commercial real estate loans | Commercial and Industrial | Term Extension
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized Cost Basis	79
Total commercial real estate loans | Commercial and Industrial | Other
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized Cost Basis	1
Total commercial real estate loans | Commercial and Industrial | Combination
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized Cost Basis	4
Total commercial real estate loans | Commercial mortgage
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized Cost Basis	$ 4
Amortized Cost Basis (as a percent)	0.02%
Total commercial real estate loans | Commercial mortgage | Interest Rate Reduction
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized Cost Basis	$ 0
Total commercial real estate loans | Commercial mortgage | Term Extension
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized Cost Basis	4
Total commercial real estate loans | Commercial mortgage | Other
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized Cost Basis	0
Total commercial real estate loans | Commercial mortgage | Combination
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized Cost Basis	0
Total commercial real estate loans | Construction
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized Cost Basis	$ 0
Amortized Cost Basis (as a percent)	0%
Total commercial real estate loans | Construction | Interest Rate Reduction
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized Cost Basis	$ 0
Total commercial real estate loans | Construction | Term Extension
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized Cost Basis	0
Total commercial real estate loans | Construction | Other
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized Cost Basis	0
Total commercial real estate loans | Construction | Combination
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized Cost Basis	0
Total commercial real estate loans | Total commercial real estate loans
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized Cost Basis	$ 4
Amortized Cost Basis (as a percent)	0.02%
Total commercial real estate loans | Total commercial real estate loans | Interest Rate Reduction
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized Cost Basis	$ 0
Total commercial real estate loans | Total commercial real estate loans | Term Extension
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized Cost Basis	4
Total commercial real estate loans | Total commercial real estate loans | Other
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized Cost Basis	0
Total commercial real estate loans | Total commercial real estate loans | Combination
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized Cost Basis	0
Total commercial loans
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized Cost Basis	$ 88
Amortized Cost Basis (as a percent)	0.11%
Total commercial loans | Interest Rate Reduction
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized Cost Basis	$ 0
Total commercial loans | Term Extension
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized Cost Basis	83
Total commercial loans | Other
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized Cost Basis	1
Total commercial loans | Combination
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized Cost Basis	4
Total commercial loans | Commercial lease financing
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized Cost Basis	$ 0
Amortized Cost Basis (as a percent)	0%
Total commercial loans | Commercial lease financing | Interest Rate Reduction
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized Cost Basis	$ 0
Total commercial loans | Commercial lease financing | Term Extension
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized Cost Basis	0
Total commercial loans | Commercial lease financing | Other
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized Cost Basis	0
Total commercial loans | Commercial lease financing | Combination
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized Cost Basis	0
Total consumer loans
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized Cost Basis	$ 5
Amortized Cost Basis (as a percent)	0.01%
Total consumer loans | Interest Rate Reduction
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized Cost Basis	$ 0
Total consumer loans | Term Extension
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized Cost Basis	0
Total consumer loans | Other
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized Cost Basis	0
Total consumer loans | Combination
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized Cost Basis	5
Total consumer loans | Real estate — residential mortgage
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized Cost Basis	$ 1
Amortized Cost Basis (as a percent)	0%
Total consumer loans | Real estate — residential mortgage | Interest Rate Reduction
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized Cost Basis	$ 0
Total consumer loans | Real estate — residential mortgage | Term Extension
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized Cost Basis	0
Total consumer loans | Real estate — residential mortgage | Other
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized Cost Basis	0
Total consumer loans | Real estate — residential mortgage | Combination
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized Cost Basis	1
Total consumer loans | Home equity loans
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized Cost Basis	$ 2
Amortized Cost Basis (as a percent)	0.03%
Total consumer loans | Home equity loans | Interest Rate Reduction
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized Cost Basis	$ 0
Total consumer loans | Home equity loans | Term Extension
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized Cost Basis	0
Total consumer loans | Home equity loans | Other
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized Cost Basis	0
Total consumer loans | Home equity loans | Combination
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized Cost Basis	2
Total consumer loans | Consumer direct loans
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized Cost Basis	$ 1
Amortized Cost Basis (as a percent)	0.02%
Total consumer loans | Consumer direct loans | Interest Rate Reduction
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized Cost Basis	$ 0
Total consumer loans | Consumer direct loans | Term Extension
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized Cost Basis	0
Total consumer loans | Consumer direct loans | Other
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized Cost Basis	0
Total consumer loans | Consumer direct loans | Combination
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized Cost Basis	1
Total consumer loans | Credit cards
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized Cost Basis	$ 1
Amortized Cost Basis (as a percent)	0.10%
Total consumer loans | Credit cards | Interest Rate Reduction
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized Cost Basis	$ 0
Total consumer loans | Credit cards | Term Extension
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized Cost Basis	0
Total consumer loans | Credit cards | Other
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized Cost Basis	0
Total consumer loans | Credit cards | Combination
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized Cost Basis	1
Total consumer loans | Consumer indirect loans
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized Cost Basis	$ 0
Amortized Cost Basis (as a percent)	0%
Total consumer loans | Consumer indirect loans | Interest Rate Reduction
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized Cost Basis	$ 0
Total consumer loans | Consumer indirect loans | Term Extension
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized Cost Basis	0
Total consumer loans | Consumer indirect loans | Other
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized Cost Basis	0
Total consumer loans | Consumer indirect loans | Combination
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized Cost Basis	$ 0

Asset Quality - Schedule of Fin

Asset Quality - Schedule of Financial Effects of Modifications to Borrowers Experiencing Financial Difficulty (Details)	3 Months Ended
	Mar. 31, 2023
Total commercial real estate loans | Commercial and Industrial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Weighted-average Interest Rate Reduction	0%
Weighted-average Term Extension (in years)	1 year 10 days
Total commercial real estate loans | Commercial mortgage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Weighted-average Interest Rate Reduction	0%
Weighted-average Term Extension (in years)	1 year 5 months 1 day
Total consumer loans | Real estate — residential mortgage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Weighted-average Interest Rate Reduction	1.33%
Weighted-average Term Extension (in years)	6 years 8 months 4 days
Total consumer loans | Home equity loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Weighted-average Interest Rate Reduction	3.72%
Weighted-average Term Extension (in years)	2 years 10 months 24 days

Asset Quality - Schedule of Per

Asset Quality - Schedule of Performance of Loans That Have Been Modified in the Last 12 Months (Details) $ in Millions	Mar. 31, 2023 USD ($)
Financing Receivable, Past Due [Line Items]
Total loans modified in last 12 months	$ 93
Current (b)
Financing Receivable, Past Due [Line Items]
Total loans modified in last 12 months	89
30-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total loans modified in last 12 months	3
90 and Greater Days Past Due
Financing Receivable, Past Due [Line Items]
Total loans modified in last 12 months	1
Total commercial loans
Financing Receivable, Past Due [Line Items]
Total loans modified in last 12 months	88
Total commercial loans | Current (b)
Financing Receivable, Past Due [Line Items]
Total loans modified in last 12 months	84
Total commercial loans | 30-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total loans modified in last 12 months	3
Total commercial loans | 90 and Greater Days Past Due
Financing Receivable, Past Due [Line Items]
Total loans modified in last 12 months	1
Total commercial loans | Commercial and Industrial
Financing Receivable, Past Due [Line Items]
Total loans modified in last 12 months	84
Total commercial loans | Commercial and Industrial | Current (b)
Financing Receivable, Past Due [Line Items]
Total loans modified in last 12 months	80
Total commercial loans | Commercial and Industrial | 30-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total loans modified in last 12 months	3
Total commercial loans | Commercial and Industrial | 90 and Greater Days Past Due
Financing Receivable, Past Due [Line Items]
Total loans modified in last 12 months	1
Total commercial loans | Commercial mortgage
Financing Receivable, Past Due [Line Items]
Total loans modified in last 12 months	4
Total commercial loans | Commercial mortgage | Current (b)
Financing Receivable, Past Due [Line Items]
Total loans modified in last 12 months	4
Total commercial loans | Commercial mortgage | 30-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total loans modified in last 12 months	0
Total commercial loans | Commercial mortgage | 90 and Greater Days Past Due
Financing Receivable, Past Due [Line Items]
Total loans modified in last 12 months	0
Total commercial loans | Construction
Financing Receivable, Past Due [Line Items]
Total loans modified in last 12 months	0
Total commercial loans | Construction | Current (b)
Financing Receivable, Past Due [Line Items]
Total loans modified in last 12 months	0
Total commercial loans | Construction | 30-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total loans modified in last 12 months	0
Total commercial loans | Construction | 90 and Greater Days Past Due
Financing Receivable, Past Due [Line Items]
Total loans modified in last 12 months	0
Total commercial loans | Total commercial real estate loans
Financing Receivable, Past Due [Line Items]
Total loans modified in last 12 months	88
Total commercial loans | Total commercial real estate loans | Current (b)
Financing Receivable, Past Due [Line Items]
Total loans modified in last 12 months	84
Total commercial loans | Total commercial real estate loans | 30-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total loans modified in last 12 months	3
Total commercial loans | Total commercial real estate loans | 90 and Greater Days Past Due
Financing Receivable, Past Due [Line Items]
Total loans modified in last 12 months	1
Total commercial loans | Commercial lease financing
Financing Receivable, Past Due [Line Items]
Total loans modified in last 12 months	0
Total commercial loans | Commercial lease financing | Current (b)
Financing Receivable, Past Due [Line Items]
Total loans modified in last 12 months	0
Total commercial loans | Commercial lease financing | 30-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total loans modified in last 12 months	0
Total commercial loans | Commercial lease financing | 90 and Greater Days Past Due
Financing Receivable, Past Due [Line Items]
Total loans modified in last 12 months	0
Total consumer loans
Financing Receivable, Past Due [Line Items]
Total loans modified in last 12 months	5
Total consumer loans | Current (b)
Financing Receivable, Past Due [Line Items]
Total loans modified in last 12 months	5
Total consumer loans | 30-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total loans modified in last 12 months	0
Total consumer loans | 90 and Greater Days Past Due
Financing Receivable, Past Due [Line Items]
Total loans modified in last 12 months	0
Total consumer loans | Real estate — residential mortgage
Financing Receivable, Past Due [Line Items]
Total loans modified in last 12 months	1
Total consumer loans | Real estate — residential mortgage | Current (b)
Financing Receivable, Past Due [Line Items]
Total loans modified in last 12 months	1
Total consumer loans | Real estate — residential mortgage | 30-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total loans modified in last 12 months	0
Total consumer loans | Real estate — residential mortgage | 90 and Greater Days Past Due
Financing Receivable, Past Due [Line Items]
Total loans modified in last 12 months	0
Total consumer loans | Home equity loans
Financing Receivable, Past Due [Line Items]
Total loans modified in last 12 months	2
Total consumer loans | Home equity loans | Current (b)
Financing Receivable, Past Due [Line Items]
Total loans modified in last 12 months	2
Total consumer loans | Home equity loans | 30-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total loans modified in last 12 months	0
Total consumer loans | Home equity loans | 90 and Greater Days Past Due
Financing Receivable, Past Due [Line Items]
Total loans modified in last 12 months	0
Total consumer loans | Consumer direct loans
Financing Receivable, Past Due [Line Items]
Total loans modified in last 12 months	1
Total consumer loans | Consumer direct loans | Current (b)
Financing Receivable, Past Due [Line Items]
Total loans modified in last 12 months	1
Total consumer loans | Consumer direct loans | 30-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total loans modified in last 12 months	0
Total consumer loans | Consumer direct loans | 90 and Greater Days Past Due
Financing Receivable, Past Due [Line Items]
Total loans modified in last 12 months	0
Total consumer loans | Credit cards
Financing Receivable, Past Due [Line Items]
Total loans modified in last 12 months	1
Total consumer loans | Credit cards | Current (b)
Financing Receivable, Past Due [Line Items]
Total loans modified in last 12 months	1
Total consumer loans | Credit cards | 30-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total loans modified in last 12 months	0
Total consumer loans | Credit cards | 90 and Greater Days Past Due
Financing Receivable, Past Due [Line Items]
Total loans modified in last 12 months	0
Total consumer loans | Consumer indirect loans
Financing Receivable, Past Due [Line Items]
Total loans modified in last 12 months	0
Total consumer loans | Consumer indirect loans | Current (b)
Financing Receivable, Past Due [Line Items]
Total loans modified in last 12 months	0
Total consumer loans | Consumer indirect loans | 30-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total loans modified in last 12 months	0
Total consumer loans | Consumer indirect loans | 90 and Greater Days Past Due
Financing Receivable, Past Due [Line Items]
Total loans modified in last 12 months	$ 0

Asset Quality - Schedule of C_2

Asset Quality - Schedule of Changes in Liability for Credit Losses on Lending Related Commitments (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Balance at beginning of period	$ 225	$ 160
Provision (credit) for losses on off balance sheet exposures	51	6
Balance at end of period	$ 276	$ 166

Asset Quality - Schedule of Pos

Asset Quality - Schedule of Post-Modification Outstanding Recorded Investment by Concession Type for Our Commercial Accruing and Nonaccruing TDRs (Details) $ in Millions	3 Months Ended
	Mar. 31, 2022 USD ($)
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total TDRs	$ 11
Total commercial loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Extension of Maturity Date	0
Payment or Covenant Modification/Deferment	1
Bankruptcy Plan Modification	0
Increase in new commitment or new money	0
Total	1
Total consumer loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Interest rate reduction	1
Other	9
Total	$ 10

Asset Quality - Schedule of P_2

Asset Quality - Schedule of Post-Modification Outstanding Recorded Investment TDRs (Details) $ in Millions	3 Months Ended
	Mar. 31, 2022 USD ($)
Financing Receivables, Modifications, Rollforward [Roll Forward]
Balance at beginning of the period	$ 220
Additions	11
Payments	(12)
Charge-offs	0
Balance at end of period	$ 219

Asset Quality - Schedule of Bre

Asset Quality - Schedule of Breakdown of Nonperforming TDRs by Loans Category (Details) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2023 loan	Dec. 31, 2022 USD ($) loan
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	136	4,205
Pre-modification Outstanding Recorded Investment		$ 334
Post-modification Outstanding Recorded Investment		$ 236
Prior-Year Accruing
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan		2,965
Pre-modification Outstanding Recorded Investment		$ 156
Post-modification Outstanding Recorded Investment		$ 118
Prior-Year Accruing | Total commercial loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan		19
Pre-modification Outstanding Recorded Investment		$ 0
Post-modification Outstanding Recorded Investment		$ 0
Prior-Year Accruing | Total consumer loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan		2,946
Pre-modification Outstanding Recorded Investment		$ 156
Post-modification Outstanding Recorded Investment		$ 118
Non-performing Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan		1,240
Pre-modification Outstanding Recorded Investment		$ 178
Post-modification Outstanding Recorded Investment		$ 118
Non-performing Loans | Total commercial loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan		31
Pre-modification Outstanding Recorded Investment		$ 110
Post-modification Outstanding Recorded Investment		$ 58
Non-performing Loans | Total consumer loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan		1,209
Pre-modification Outstanding Recorded Investment		$ 68
Post-modification Outstanding Recorded Investment		$ 60
Total commercial real estate loans | Prior-Year Accruing | Total commercial real estate loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan		0
Pre-modification Outstanding Recorded Investment		$ 0
Post-modification Outstanding Recorded Investment		$ 0
Total commercial real estate loans | Non-performing Loans | Total commercial real estate loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan		4
Pre-modification Outstanding Recorded Investment		$ 50
Post-modification Outstanding Recorded Investment		$ 13
Commercial and industrial | Prior-Year Accruing | Total commercial loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan		19
Pre-modification Outstanding Recorded Investment		$ 0
Post-modification Outstanding Recorded Investment		$ 0
Commercial and industrial | Non-performing Loans | Total commercial loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan		27
Pre-modification Outstanding Recorded Investment		$ 60
Post-modification Outstanding Recorded Investment		$ 45
Commercial mortgage | Prior-Year Accruing | Total commercial real estate loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan		0
Pre-modification Outstanding Recorded Investment		$ 0
Post-modification Outstanding Recorded Investment		$ 0
Commercial mortgage | Non-performing Loans | Total commercial real estate loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan		4
Pre-modification Outstanding Recorded Investment		$ 50
Post-modification Outstanding Recorded Investment		$ 13
Real estate — residential mortgage | Prior-Year Accruing | Total consumer loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan		425
Pre-modification Outstanding Recorded Investment		$ 41
Post-modification Outstanding Recorded Investment		$ 35
Real estate — residential mortgage | Non-performing Loans | Total consumer loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan		238
Pre-modification Outstanding Recorded Investment		$ 30
Post-modification Outstanding Recorded Investment		$ 27
Home equity loans | Prior-Year Accruing | Total consumer loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan		1,547
Pre-modification Outstanding Recorded Investment		$ 96
Post-modification Outstanding Recorded Investment		$ 73
Home equity loans | Non-performing Loans | Total consumer loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan		468
Pre-modification Outstanding Recorded Investment		$ 32
Post-modification Outstanding Recorded Investment		$ 28
Consumer direct loans | Prior-Year Accruing | Total consumer loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan		272
Pre-modification Outstanding Recorded Investment		$ 4
Post-modification Outstanding Recorded Investment		$ 3
Consumer direct loans | Non-performing Loans | Total consumer loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan		156
Pre-modification Outstanding Recorded Investment		$ 2
Post-modification Outstanding Recorded Investment		$ 2
Credit cards | Prior-Year Accruing | Total consumer loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan		607
Pre-modification Outstanding Recorded Investment		$ 4
Post-modification Outstanding Recorded Investment		$ 2
Credit cards | Non-performing Loans | Total consumer loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan		331
Pre-modification Outstanding Recorded Investment		$ 2
Post-modification Outstanding Recorded Investment		$ 2
Consumer indirect loans | Prior-Year Accruing | Total consumer loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan		95
Pre-modification Outstanding Recorded Investment		$ 11
Post-modification Outstanding Recorded Investment		$ 5
Consumer indirect loans | Non-performing Loans | Total consumer loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan		16
Pre-modification Outstanding Recorded Investment		$ 2
Post-modification Outstanding Recorded Investment		$ 1

Fair Value Measurements - Sched

Fair Value Measurements - Schedule of Fair Value of Assets and Liabilities Measured on Recurring Basis (Details) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
ASSETS MEASURED ON A RECURRING BASIS
Total trading account securities	$ 1,118	$ 829
Securities available for sale	39,498	39,117
Loans, net of unearned income (residential)	119,971	119,394
Netting adjustments	(978)	(757)
Total derivative assets	397	1,024
LIABILITIES MEASURED ON A RECURRING BASIS
Netting adjustments	(850)	(1,262)
Other
ASSETS MEASURED ON A RECURRING BASIS
Derivative assets	1
U.S. Treasury, agencies and corporations
ASSETS MEASURED ON A RECURRING BASIS
Securities available for sale	9,514	9,415
Agency residential mortgage-backed securities | Mortgage-backed securities
ASSETS MEASURED ON A RECURRING BASIS
Securities available for sale	3,900	3,920
Agency commercial mortgage-backed securities | Mortgage-backed securities
ASSETS MEASURED ON A RECURRING BASIS
Securities available for sale	9,659	9,349
Other securities
ASSETS MEASURED ON A RECURRING BASIS
Securities available for sale	0	0
Recurring
ASSETS MEASURED ON A RECURRING BASIS
Total trading account securities	1,117	815
Commercial loans	1	14
Total trading account assets	1,118	829
Securities available for sale	39,498	39,117
Total other investments	61	77
Loans, net of unearned income (residential)	9	9
Loans held for sale (residential)	45	24
Derivative assets	1,375	1,781
Netting adjustments	(978)	(757)
Total derivative assets	397	1,024
Total assets on a recurring basis at fair value	41,128	41,080
LIABILITIES MEASURED ON A RECURRING BASIS
Total liabilities on a recurring basis at fair value	2,105	2,123
Recurring | Short positions
LIABILITIES MEASURED ON A RECURRING BASIS
Short positions	811	635
Recurring | Long positions
LIABILITIES MEASURED ON A RECURRING BASIS
Derivative liabilities, gross	2,144	2,750
Netting adjustments	(850)	(1,262)
Total derivative liabilities	1,294	1,488
Recurring | Interest rate
ASSETS MEASURED ON A RECURRING BASIS
Derivative assets	241	303
Recurring | Interest rate | Long positions
LIABILITIES MEASURED ON A RECURRING BASIS
Derivative liabilities, gross	1,057	1,307
Recurring | Foreign exchange
ASSETS MEASURED ON A RECURRING BASIS
Derivative assets	131	136
Recurring | Foreign exchange | Long positions
LIABILITIES MEASURED ON A RECURRING BASIS
Derivative liabilities, gross	113	131
Recurring | Commodity
ASSETS MEASURED ON A RECURRING BASIS
Derivative assets	986	1,328
Recurring | Commodity | Long positions
LIABILITIES MEASURED ON A RECURRING BASIS
Derivative liabilities, gross	962	1,304
Recurring | Credit
ASSETS MEASURED ON A RECURRING BASIS
Derivative assets	1	1
Recurring | Credit | Long positions
LIABILITIES MEASURED ON A RECURRING BASIS
Derivative liabilities, gross	3	3
Recurring | Other
ASSETS MEASURED ON A RECURRING BASIS
Derivative assets	16	13
Recurring | Other | Long positions
LIABILITIES MEASURED ON A RECURRING BASIS
Derivative liabilities, gross	9	5
Recurring | Agency residential collateralized mortgage obligations
ASSETS MEASURED ON A RECURRING BASIS
Securities available for sale	16,425	16,433
Recurring | Mortgage-backed securities
ASSETS MEASURED ON A RECURRING BASIS
Total trading account securities	152	84
Recurring | U.S. Treasury, agencies and corporations
ASSETS MEASURED ON A RECURRING BASIS
Total trading account securities	926	698
Securities available for sale	9,514	9,415
Recurring | States and political subdivisions
ASSETS MEASURED ON A RECURRING BASIS
Total trading account securities	36	33
Securities available for sale	0	0
Recurring | Agency residential mortgage-backed securities | Mortgage-backed securities
ASSETS MEASURED ON A RECURRING BASIS
Securities available for sale	3,900	3,920
Recurring | Agency commercial mortgage-backed securities
ASSETS MEASURED ON A RECURRING BASIS
Securities available for sale	9,659	9,349
Recurring | Other securities
ASSETS MEASURED ON A RECURRING BASIS
Total trading account securities	3	0
Securities available for sale	0	0
Recurring | Principal investments, Direct
ASSETS MEASURED ON A RECURRING BASIS
Total other investments	1	1
Recurring | Principal Investments
ASSETS MEASURED ON A RECURRING BASIS
Total other investments	21	35
Recurring | Equity Investments, Direct
ASSETS MEASURED ON A RECURRING BASIS
Total other investments	5	6
Recurring | Equity Investments
ASSETS MEASURED ON A RECURRING BASIS
Total other investments	40	42
Recurring | Level 1
ASSETS MEASURED ON A RECURRING BASIS
Total trading account securities	0	0
Commercial loans	0	0
Total trading account assets	0	0
Securities available for sale	0	0
Total other investments	3	4
Loans, net of unearned income (residential)	0	0
Loans held for sale (residential)	0	0
Derivative assets	113	112
Netting adjustments	0	0
Total derivative assets	113	112
Total assets on a recurring basis at fair value	116	116
LIABILITIES MEASURED ON A RECURRING BASIS
Total liabilities on a recurring basis at fair value	153	233
Recurring | Level 1 | Short positions
LIABILITIES MEASURED ON A RECURRING BASIS
Short positions	58	126
Recurring | Level 1 | Long positions
LIABILITIES MEASURED ON A RECURRING BASIS
Derivative liabilities, gross	95	107
Netting adjustments	0	0
Total derivative liabilities	95	107
Recurring | Level 1 | Interest rate
ASSETS MEASURED ON A RECURRING BASIS
Derivative assets	0	0
Recurring | Level 1 | Interest rate | Long positions
LIABILITIES MEASURED ON A RECURRING BASIS
Derivative liabilities, gross	0	0
Recurring | Level 1 | Foreign exchange
ASSETS MEASURED ON A RECURRING BASIS
Derivative assets	113	112
Recurring | Level 1 | Foreign exchange | Long positions
LIABILITIES MEASURED ON A RECURRING BASIS
Derivative liabilities, gross	95	107
Recurring | Level 1 | Commodity
ASSETS MEASURED ON A RECURRING BASIS
Derivative assets	0	0
Recurring | Level 1 | Commodity | Long positions
LIABILITIES MEASURED ON A RECURRING BASIS
Derivative liabilities, gross	0	0
Recurring | Level 1 | Credit
ASSETS MEASURED ON A RECURRING BASIS
Derivative assets	0	0
Recurring | Level 1 | Credit | Long positions
LIABILITIES MEASURED ON A RECURRING BASIS
Derivative liabilities, gross	0	0
Recurring | Level 1 | Other
ASSETS MEASURED ON A RECURRING BASIS
Derivative assets	0	0
Recurring | Level 1 | Other | Long positions
LIABILITIES MEASURED ON A RECURRING BASIS
Derivative liabilities, gross	0	0
Recurring | Level 1 | Agency residential collateralized mortgage obligations
ASSETS MEASURED ON A RECURRING BASIS
Securities available for sale	0	0
Recurring | Level 1 | Mortgage-backed securities
ASSETS MEASURED ON A RECURRING BASIS
Total trading account securities	0	0
Recurring | Level 1 | U.S. Treasury, agencies and corporations
ASSETS MEASURED ON A RECURRING BASIS
Total trading account securities	0	0
Securities available for sale	0	0
Recurring | Level 1 | States and political subdivisions
ASSETS MEASURED ON A RECURRING BASIS
Total trading account securities	0	0
Securities available for sale	0	0
Recurring | Level 1 | Agency residential mortgage-backed securities | Mortgage-backed securities
ASSETS MEASURED ON A RECURRING BASIS
Securities available for sale	0	0
Recurring | Level 1 | Agency commercial mortgage-backed securities
ASSETS MEASURED ON A RECURRING BASIS
Securities available for sale	0	0
Recurring | Level 1 | Other securities
ASSETS MEASURED ON A RECURRING BASIS
Total trading account securities	0	0
Securities available for sale	0	0
Recurring | Level 1 | Principal investments, Direct
ASSETS MEASURED ON A RECURRING BASIS
Total other investments	0	0
Recurring | Level 1 | Principal Investments, Indirect
ASSETS MEASURED ON A RECURRING BASIS
Total other investments	0	0
Recurring | Level 1 | Principal Investments
ASSETS MEASURED ON A RECURRING BASIS
Total other investments	0	0
Recurring | Level 1 | Equity Investments, Direct
ASSETS MEASURED ON A RECURRING BASIS
Total other investments	3	4
Recurring | Level 1 | Equity Investments Direct, NAV
ASSETS MEASURED ON A RECURRING BASIS
Total other investments	0	0
Recurring | Level 1 | Equity Investments Indirect, NAV
ASSETS MEASURED ON A RECURRING BASIS
Total other investments	0	0
Recurring | Level 1 | Equity Investments
ASSETS MEASURED ON A RECURRING BASIS
Total other investments	3	4
Recurring | Level 2
ASSETS MEASURED ON A RECURRING BASIS
Total trading account securities	1,117	815
Commercial loans	1	14
Total trading account assets	1,118	829
Securities available for sale	39,498	39,117
Total other investments	0	0
Loans, net of unearned income (residential)	0	0
Loans held for sale (residential)	45	24
Derivative assets	1,247	1,666
Netting adjustments	0	0
Total derivative assets	1,247	1,666
Total assets on a recurring basis at fair value	41,908	41,636
LIABILITIES MEASURED ON A RECURRING BASIS
Total liabilities on a recurring basis at fair value	2,800	3,149
Recurring | Level 2 | Short positions
LIABILITIES MEASURED ON A RECURRING BASIS
Short positions	753	509
Recurring | Level 2 | Long positions
LIABILITIES MEASURED ON A RECURRING BASIS
Derivative liabilities, gross	2,047	2,640
Netting adjustments	0	0
Total derivative liabilities	2,047	2,640
Recurring | Level 2 | Interest rate
ASSETS MEASURED ON A RECURRING BASIS
Derivative assets	228	301
Recurring | Level 2 | Interest rate | Long positions
LIABILITIES MEASURED ON A RECURRING BASIS
Derivative liabilities, gross	1,057	1,307
Recurring | Level 2 | Foreign exchange
ASSETS MEASURED ON A RECURRING BASIS
Derivative assets	18	23
Recurring | Level 2 | Foreign exchange | Long positions
LIABILITIES MEASURED ON A RECURRING BASIS
Derivative liabilities, gross	18	24
Recurring | Level 2 | Commodity
ASSETS MEASURED ON A RECURRING BASIS
Derivative assets	986	1,328
Recurring | Level 2 | Commodity | Long positions
LIABILITIES MEASURED ON A RECURRING BASIS
Derivative liabilities, gross	962	1,304
Recurring | Level 2 | Credit
ASSETS MEASURED ON A RECURRING BASIS
Derivative assets	0	0
Recurring | Level 2 | Credit | Long positions
LIABILITIES MEASURED ON A RECURRING BASIS
Derivative liabilities, gross	1	0
Recurring | Level 2 | Other
ASSETS MEASURED ON A RECURRING BASIS
Derivative assets	15	13
Recurring | Level 2 | Other | Long positions
LIABILITIES MEASURED ON A RECURRING BASIS
Derivative liabilities, gross	9	5
Recurring | Level 2 | Agency residential collateralized mortgage obligations
ASSETS MEASURED ON A RECURRING BASIS
Securities available for sale	16,425	16,433
Recurring | Level 2 | Mortgage-backed securities
ASSETS MEASURED ON A RECURRING BASIS
Total trading account securities	152	84
Recurring | Level 2 | U.S. Treasury, agencies and corporations
ASSETS MEASURED ON A RECURRING BASIS
Total trading account securities	926	698
Securities available for sale	9,514	9,415
Recurring | Level 2 | States and political subdivisions
ASSETS MEASURED ON A RECURRING BASIS
Total trading account securities	36	33
Securities available for sale	0	0
Recurring | Level 2 | Agency residential mortgage-backed securities | Mortgage-backed securities
ASSETS MEASURED ON A RECURRING BASIS
Securities available for sale	3,900	3,920
Recurring | Level 2 | Agency commercial mortgage-backed securities
ASSETS MEASURED ON A RECURRING BASIS
Securities available for sale	9,659	9,349
Recurring | Level 2 | Other securities
ASSETS MEASURED ON A RECURRING BASIS
Total trading account securities	3	0
Securities available for sale	0	0
Recurring | Level 2 | Principal investments, Direct
ASSETS MEASURED ON A RECURRING BASIS
Total other investments	0	0
Recurring | Level 2 | Principal Investments, Indirect
ASSETS MEASURED ON A RECURRING BASIS
Total other investments	0	0
Recurring | Level 2 | Principal Investments
ASSETS MEASURED ON A RECURRING BASIS
Total other investments	0	0
Recurring | Level 2 | Equity Investments, Direct
ASSETS MEASURED ON A RECURRING BASIS
Total other investments	0	0
Recurring | Level 2 | Equity Investments Direct, NAV
ASSETS MEASURED ON A RECURRING BASIS
Total other investments	0	0
Recurring | Level 2 | Equity Investments Indirect, NAV
ASSETS MEASURED ON A RECURRING BASIS
Total other investments	0	0
Recurring | Level 2 | Equity Investments
ASSETS MEASURED ON A RECURRING BASIS
Total other investments	0	0
Recurring | Level 3
ASSETS MEASURED ON A RECURRING BASIS
Total trading account securities	0	0
Commercial loans	0	0
Total trading account assets	0	0
Securities available for sale	0	0
Total other investments	3	3
Loans, net of unearned income (residential)	9	9
Loans held for sale (residential)	0	0
Derivative assets	15	3
Netting adjustments	0	0
Total derivative assets	15	3
Total assets on a recurring basis at fair value	27	15
LIABILITIES MEASURED ON A RECURRING BASIS
Total liabilities on a recurring basis at fair value	2	3
Recurring | Level 3 | Short positions
LIABILITIES MEASURED ON A RECURRING BASIS
Short positions	0	0
Recurring | Level 3 | Long positions
LIABILITIES MEASURED ON A RECURRING BASIS
Derivative liabilities, gross	2	3
Netting adjustments	0	0
Total derivative liabilities	2	3
Recurring | Level 3 | Interest rate
ASSETS MEASURED ON A RECURRING BASIS
Derivative assets	13	2
Recurring | Level 3 | Interest rate | Long positions
LIABILITIES MEASURED ON A RECURRING BASIS
Derivative liabilities, gross	0	0
Recurring | Level 3 | Foreign exchange
ASSETS MEASURED ON A RECURRING BASIS
Derivative assets	0	0
Recurring | Level 3 | Foreign exchange | Long positions
LIABILITIES MEASURED ON A RECURRING BASIS
Derivative liabilities, gross	0	0
Recurring | Level 3 | Commodity
ASSETS MEASURED ON A RECURRING BASIS
Derivative assets	0	0
Recurring | Level 3 | Commodity | Long positions
LIABILITIES MEASURED ON A RECURRING BASIS
Derivative liabilities, gross	0	0
Recurring | Level 3 | Credit
ASSETS MEASURED ON A RECURRING BASIS
Derivative assets	1	1
Recurring | Level 3 | Credit | Long positions
LIABILITIES MEASURED ON A RECURRING BASIS
Derivative liabilities, gross	2	3
Recurring | Level 3 | Other
ASSETS MEASURED ON A RECURRING BASIS
Derivative assets		0
Recurring | Level 3 | Other | Long positions
LIABILITIES MEASURED ON A RECURRING BASIS
Derivative liabilities, gross	0	0
Recurring | Level 3 | Agency residential collateralized mortgage obligations
ASSETS MEASURED ON A RECURRING BASIS
Securities available for sale	0	0
Recurring | Level 3 | Mortgage-backed securities
ASSETS MEASURED ON A RECURRING BASIS
Total trading account securities	0	0
Recurring | Level 3 | U.S. Treasury, agencies and corporations
ASSETS MEASURED ON A RECURRING BASIS
Total trading account securities	0	0
Securities available for sale	0	0
Recurring | Level 3 | States and political subdivisions
ASSETS MEASURED ON A RECURRING BASIS
Total trading account securities	0	0
Securities available for sale	0	0
Recurring | Level 3 | Agency residential mortgage-backed securities | Mortgage-backed securities
ASSETS MEASURED ON A RECURRING BASIS
Securities available for sale	0	0
Recurring | Level 3 | Agency commercial mortgage-backed securities
ASSETS MEASURED ON A RECURRING BASIS
Securities available for sale	0	0
Recurring | Level 3 | Other securities
ASSETS MEASURED ON A RECURRING BASIS
Total trading account securities	0	0
Securities available for sale	0	0
Recurring | Level 3 | Principal investments, Direct
ASSETS MEASURED ON A RECURRING BASIS
Total other investments	1	1
Recurring | Level 3 | Principal Investments, Indirect
ASSETS MEASURED ON A RECURRING BASIS
Total other investments	0	0
Recurring | Level 3 | Principal Investments
ASSETS MEASURED ON A RECURRING BASIS
Total other investments	1	1
Recurring | Level 3 | Equity Investments, Direct
ASSETS MEASURED ON A RECURRING BASIS
Total other investments	2	2
Recurring | Level 3 | Equity Investments Direct, NAV
ASSETS MEASURED ON A RECURRING BASIS
Total other investments	0	0
Recurring | Level 3 | Equity Investments Indirect, NAV
ASSETS MEASURED ON A RECURRING BASIS
Total other investments	0	0
Recurring | Level 3 | Equity Investments
ASSETS MEASURED ON A RECURRING BASIS
Total other investments	2	2
Recurring | Measured at NAV | Principal Investments, Indirect | Variable Interest Entity, Not Primary Beneficiary
ASSETS MEASURED ON A RECURRING BASIS
Total other investments	20	34
Recurring | Measured at NAV | Equity Investments Direct, NAV
ASSETS MEASURED ON A RECURRING BASIS
Total other investments	31	32
Recurring | Measured at NAV | Equity Investments Indirect, NAV
ASSETS MEASURED ON A RECURRING BASIS
Total other investments	$ 4	$ 4

Fair Value Measurements - Sch_2

Fair Value Measurements - Schedule of Fair Value of Direct and Indirect Investments, Related Unfunded Commitments and Financial Support Provided (Details) - Principal Investments - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value	$ 21
Unfunded Commitments	3
Funded Commitments	0	$ 0
Funded Other	0	0
Direct investments
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value	1
Unfunded Commitments	0
Funded Commitments	0	0
Funded Other	0	0
Indirect investments (measured at NAV)
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value	20
Unfunded Commitments	3
Funded Commitments	0	0
Funded Other	$ 0	$ 0

Fair Value Measurements - Sch_3

Fair Value Measurements - Schedule of Change in Fair Values of Level 3 Financial Instruments (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Interest rate
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Beginning of Period Balance	$ 2	$ 33
Gains (Losses) Included in Other Comprehensive Income	0	0
Gains (Losses) Included in Earnings	6	(11)
Purchases	18	1
Sales	(1)	0
Settlements	0
Transfers Other	0
Transfers into Level 3	(8)	29
Transfers out of Level 3	(4)	(9)
End of Period Balance	13	43
Unrealized Gains (Losses) Included in Earnings	0	0
Credit
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Beginning of Period Balance	(2)	(6)
Gains (Losses) Included in Other Comprehensive Income	0	0
Gains (Losses) Included in Earnings	1	1
Purchases	0	0
Sales	0	0
Settlements	0	0
Transfers Other	0	0
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
End of Period Balance	(1)	(5)
Unrealized Gains (Losses) Included in Earnings	0	0
Other
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Beginning of Period Balance	0	5
Gains (Losses) Included in Other Comprehensive Income	0	0
Gains (Losses) Included in Earnings	0	0
Purchases	0	0
Sales	0
Settlements	0	0
Transfers Other	1	(7)
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
End of Period Balance	1	(2)
Unrealized Gains (Losses) Included in Earnings	0	0
Loans, net of unearned income (residential)
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Beginning of Period Balance	9	11
Gains (Losses) Included in Other Comprehensive Income	0	0
Gains (Losses) Included in Earnings	0	0
Purchases	0	0
Sales	0	0
Settlements	0	0
Transfers Other	0	0
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
End of Period Balance	9	11
Unrealized Gains (Losses) Included in Earnings	0	0
Other investments
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Beginning of Period Balance	2	9
Gains (Losses) Included in Other Comprehensive Income	0
Gains (Losses) Included in Earnings	0	(2)
Purchases	0	0
Sales	0	0
Settlements	0	0
Transfers Other	0	0
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
End of Period Balance	2	7
Unrealized Gains (Losses) Included in Earnings	0	(2)
Other investments | Principal investments, Direct
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Beginning of Period Balance	1	1
Gains (Losses) Included in Other Comprehensive Income	0	0
Gains (Losses) Included in Earnings	0	0
Purchases	0	0
Sales	0	0
Settlements	0	0
Transfers Other	0	0
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
End of Period Balance	1	1
Unrealized Gains (Losses) Included in Earnings	0	$ 0
Other investments | Principal Investments, Other Indirect
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Beginning of Period Balance	0
Gains (Losses) Included in Other Comprehensive Income	0
Gains (Losses) Included in Earnings	0
Purchases	0
Sales	0
Settlements	0
Transfers Other	0
Transfers into Level 3	0
Transfers out of Level 3	0
End of Period Balance	0
Unrealized Gains (Losses) Included in Earnings	$ 0

Fair Value Measurements - Narra

Fair Value Measurements - Narrative (Details) - USD ($)	3 Months Ended
	Mar. 31, 2023	Dec. 31, 2022
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other equity investments	$ 256,000,000	$ 249,000,000
Impairment loss	0
Loans, net of allowance	118,591,000,000	118,057,000,000
Carrying Amount | Education Lending | Discontinued operations
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans, net of allowance	407,000,000	434,000,000
Fair Value | Education Lending | Discontinued operations
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans, net of allowance	334,000,000	357,000,000
Fair Value | Nonrecurring
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Liabilities measured at fair value on non recurring basis	$ 0	$ 0

Fair Value Measurements - Sch_4

Fair Value Measurements - Schedule of Assets and Liabilities Measured at Fair Value on Nonrecurring Basis (Details) - Nonrecurring - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
ASSETS MEASURED ON A NONRECURRING BASIS
Collateral-dependent loans	$ 60	$ 17
Accrued income and other assets	72	14
Total assets on a recurring basis at fair value	132	31
Level 1
ASSETS MEASURED ON A NONRECURRING BASIS
Collateral-dependent loans	0	0
Accrued income and other assets	0	0
Total assets on a recurring basis at fair value	0	0
Level 2
ASSETS MEASURED ON A NONRECURRING BASIS
Collateral-dependent loans	0	0
Accrued income and other assets	0	0
Total assets on a recurring basis at fair value	0	0
Level 3
ASSETS MEASURED ON A NONRECURRING BASIS
Collateral-dependent loans	60	17
Accrued income and other assets	72	14
Total assets on a recurring basis at fair value	$ 132	$ 31

Fair Value Measurements - Sch_5

Fair Value Measurements - Schedule of Quantitative Information about Level 3 Fair Value Measurements (Details)	Mar. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Fair Value, Option, Quantitative Disclosures [Line Items]
Derivative assets	$ 397,000,000	$ 1,024,000,000
Mortgage servicing assets excluded from OREO	0	0
Recurring
Fair Value, Option, Quantitative Disclosures [Line Items]
Derivative assets	397,000,000	1,024,000,000
Nonrecurring
Fair Value, Option, Quantitative Disclosures [Line Items]
Impaired loans	60,000,000	17,000,000
Level 3
Fair Value, Option, Quantitative Disclosures [Line Items]
Insignificant level 3 assets, net of liabilities	3,000,000	1,000,000
Level 3 | Recurring
Fair Value, Option, Quantitative Disclosures [Line Items]
Derivative assets	15,000,000	3,000,000
Level 3 | Nonrecurring
Fair Value, Option, Quantitative Disclosures [Line Items]
Impaired loans	60,000,000	17,000,000
Valuation, Market Comparable Pricing | Level 3 | Recurring
Fair Value, Option, Quantitative Disclosures [Line Items]
Loans, net of unearned income (residential)	$ 9,000,000	$ 9,000,000
Valuation, Market Comparable Pricing | Level 3 | Recurring | Measurement Input, Comparability Adjustment | Minimum
Fair Value, Option, Quantitative Disclosures [Line Items]
Loans, net of unearned income (residential), measurement input	0.6172	0.6100
Valuation, Market Comparable Pricing | Level 3 | Recurring | Measurement Input, Comparability Adjustment | Maximum
Fair Value, Option, Quantitative Disclosures [Line Items]
Loans, net of unearned income (residential), measurement input	0.8723	0.8658
Valuation, Market Comparable Pricing | Level 3 | Recurring | Measurement Input, Comparability Adjustment | Weighted Average
Fair Value, Option, Quantitative Disclosures [Line Items]
Loans, net of unearned income (residential), measurement input	0.7234	0.7221
Valuation Technique, Discounted Cash Flow | Level 3 | Recurring | Interest rate
Fair Value, Option, Quantitative Disclosures [Line Items]
Derivative assets	$ 13,000,000	$ 2,000,000
Valuation Technique, Discounted Cash Flow | Level 3 | Recurring | Interest rate | Measurement Input, Default Rate | Minimum
Fair Value, Option, Quantitative Disclosures [Line Items]
Derivative assets, measurement input	0.0002	0.0002
Valuation Technique, Discounted Cash Flow | Level 3 | Recurring | Interest rate | Measurement Input, Default Rate | Maximum
Fair Value, Option, Quantitative Disclosures [Line Items]
Derivative assets, measurement input	1	1
Valuation Technique, Discounted Cash Flow | Level 3 | Recurring | Interest rate | Measurement Input, Default Rate | Weighted Average
Fair Value, Option, Quantitative Disclosures [Line Items]
Derivative assets, measurement input	0.0680	0.0800
Valuation Technique, Discounted Cash Flow | Level 3 | Recurring | Interest rate | Measurement Input, Loss Given Default | Minimum
Fair Value, Option, Quantitative Disclosures [Line Items]
Derivative assets, measurement input	0	0
Valuation Technique, Discounted Cash Flow | Level 3 | Recurring | Interest rate | Measurement Input, Loss Given Default | Maximum
Fair Value, Option, Quantitative Disclosures [Line Items]
Derivative assets, measurement input	1	1
Valuation Technique, Discounted Cash Flow | Level 3 | Recurring | Interest rate | Measurement Input, Loss Given Default | Weighted Average
Fair Value, Option, Quantitative Disclosures [Line Items]
Derivative assets, measurement input	0.495	0.492
Valuation, Fair Value Of Underlying Collateral | Level 3 | Nonrecurring
Fair Value, Option, Quantitative Disclosures [Line Items]
Impaired loans	$ 60,000,000	$ 17,000,000
Valuation, Fair Value Of Underlying Collateral | Level 3 | Nonrecurring | Measurement Input, Discount Rate | Minimum
Fair Value, Option, Quantitative Disclosures [Line Items]
Impaired loans, measurement input	0	0
Valuation, Fair Value Of Underlying Collateral | Level 3 | Nonrecurring | Measurement Input, Discount Rate | Maximum
Fair Value, Option, Quantitative Disclosures [Line Items]
Impaired loans, measurement input	0.1000	0.8500
Valuation, Fair Value Of Underlying Collateral | Level 3 | Nonrecurring | Measurement Input, Discount Rate | Weighted Average
Fair Value, Option, Quantitative Disclosures [Line Items]
Impaired loans, measurement input	0.0400	0.3400
Valuation, Appraised Value | Level 3 | Nonrecurring
Fair Value, Option, Quantitative Disclosures [Line Items]
OREO and other Level 3 assets	$ 72,000,000	$ 14,000,000

Fair Value Measurements - Sch_6

Fair Value Measurements - Schedule of Fair Value Disclosures of Financial Instruments (Details) - USD ($) $ in Millions		Mar. 31, 2023	Dec. 31, 2022
ASSETS
Trading account assets		$ 1,118	$ 829
Derivative assets		397	1,024
Securities available for sale		39,498	39,117
Held to maturity securities		9,561	8,710
Loans, net of unearned income (residential)		119,971	119,394
Loans held for sale	[1]	1,211	963
LIABILITIES
Long-term debt, carrying amount		22,753	19,307
Carrying Amount
ASSETS
Trading account assets		1,118	829
Other investments		1,587	1,308
Loans, net of unearned income (residential)		9	9
Loans held for sale (residential)		45	24
Securities available for sale		39,498	39,117
Held to maturity securities		9,561	8,710
Loans, net of unearned income (residential)		118,582	118,048
Loans held for sale		1,166	939
Cash and other short-term investments		9,194	3,319
LIABILITIES
Time deposits, carrying amount		13,838	7,373
Short-term borrowings, carrying amount		11,435	9,463
Long-term debt, carrying amount		22,753	19,307
Deposits with no stated maturity		130,310	135,222
Carrying Amount | Derivatives Not Designated as Hedging Instruments
ASSETS
Derivative assets		382	927
LIABILITIES
Derivative liabilities		1,332	1,485
Carrying Amount | Derivatives Designated as Hedging Instruments
ASSETS
Derivative assets		15	97
LIABILITIES
Derivative liabilities		(38)	3
Fair Value
ASSETS
Trading account assets		1,118	829
Other investments		1,587	1,308
Loans, net of unearned income (residential)		9	9
Loans held for sale (residential)		45	24
Securities available for sale		39,498	39,117
Held to maturity securities		9,085	8,113
Loans, net of unearned income (residential)		112,964	112,590
Loans held for sale		1,166	939
Cash and other short-term investments		9,194	3,319
LIABILITIES
Time deposits, fair value		13,898	7,392
Short-term borrowings, fair value		11,435	9,463
Long-term debt, fair value		21,891	18,881
Deposits with no stated maturity		130,310	135,222
Fair Value | Derivatives Not Designated as Hedging Instruments
ASSETS
Derivative assets		382	927
Derivative assets, Netting Adjustment		(939)	(740)
LIABILITIES
Derivative liabilities		1,332	1,485
Derivative liabilities, Netting Adjustment		(835)	(1,262)
Fair Value | Derivatives Designated as Hedging Instruments
ASSETS
Derivative assets		15	97
Derivative assets, Netting Adjustment		(39)	(17)
LIABILITIES
Derivative liabilities		(38)	3
Derivative liabilities, Netting Adjustment		(15)	0
Fair Value | Level 1
ASSETS
Trading account assets		0	0
Other investments		3	4
Loans, net of unearned income (residential)		0	0
Loans held for sale (residential)		0	0
Securities available for sale		0	0
Held to maturity securities		0	0
Loans, net of unearned income (residential)		0	0
Loans held for sale		0	0
Cash and other short-term investments		9,194	3,319
LIABILITIES
Time deposits, fair value		0	0
Short-term borrowings, fair value		58	126
Long-term debt, fair value		12,195	12,196
Deposits with no stated maturity		0	0
Fair Value | Level 1 | Derivatives Not Designated as Hedging Instruments
ASSETS
Derivative assets		113	112
LIABILITIES
Derivative liabilities		95	107
Fair Value | Level 1 | Derivatives Designated as Hedging Instruments
ASSETS
Derivative assets		0	0
LIABILITIES
Derivative liabilities		0	0
Fair Value | Level 2
ASSETS
Trading account assets		1,118	829
Other investments		0	0
Loans, net of unearned income (residential)		0	0
Loans held for sale (residential)		45	24
Securities available for sale		39,498	39,117
Held to maturity securities		9,085	8,113
Loans, net of unearned income (residential)		0	0
Loans held for sale		0	0
Cash and other short-term investments		0	0
LIABILITIES
Time deposits, fair value		13,898	7,392
Short-term borrowings, fair value		11,377	9,337
Long-term debt, fair value		9,696	6,685
Deposits with no stated maturity		130,310	135,222
Fair Value | Level 2 | Derivatives Not Designated as Hedging Instruments
ASSETS
Derivative assets		1,193	1,552
LIABILITIES
Derivative liabilities		2,070	2,637
Fair Value | Level 2 | Derivatives Designated as Hedging Instruments
ASSETS
Derivative assets		54	114
LIABILITIES
Derivative liabilities		(23)	3
Fair Value | Level 3
ASSETS
Trading account assets		0	0
Other investments		1,530	1,234
Loans, net of unearned income (residential)		9	9
Loans held for sale (residential)		0	0
Securities available for sale		0	0
Held to maturity securities		0	0
Loans, net of unearned income (residential)		112,964	112,590
Loans held for sale		1,166	939
Cash and other short-term investments		0	0
LIABILITIES
Time deposits, fair value		0	0
Short-term borrowings, fair value		0	0
Long-term debt, fair value		0	0
Deposits with no stated maturity		0	0
Fair Value | Level 3 | Derivatives Not Designated as Hedging Instruments
ASSETS
Derivative assets		15	3
LIABILITIES
Derivative liabilities		2	3
Fair Value | Level 3 | Derivatives Designated as Hedging Instruments
ASSETS
Derivative assets		0	0
LIABILITIES
Derivative liabilities		0	0
Fair Value | Measured at NAV
ASSETS
Other investments		$ 54	$ 70
[1]Total loans held for sale include real estate — residential mortgage loans held for sale at fair value of $45 million at March 31, 2023, and $24 million at December 31, 2022.

Securities - Schedule of Detail

Securities - Schedule of Details of Securities (Details) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
SECURITIES AVAILABLE FOR SALE
Amortized Cost	$ 45,179	$ 45,552
Gross Unrealized Gains	5	2
Gross Unrealized Losses	5,686	6,437
Fair Value	39,498	39,117
HELD-TO-MATURITY SECURITIES
Total	9,561	8,710
Gross Unrealized Gains	17	6
Gross Unrealized Losses	493	603
Fair Value	9,085	8,113
Debt securities, available for sale, accrued interest	66	67
Debt securities, held to maturity, accrued interest	24	88
U.S. Treasury, agencies and corporations
SECURITIES AVAILABLE FOR SALE
Amortized Cost	10,027	10,044
Gross Unrealized Gains	0	0
Gross Unrealized Losses	513	629
Fair Value	9,514	9,415
Agency residential collateralized mortgage obligations
SECURITIES AVAILABLE FOR SALE
Amortized Cost	19,770	20,180
Gross Unrealized Gains	0	0
Gross Unrealized Losses	3,345	3,747
Fair Value	16,425	16,433
HELD-TO-MATURITY SECURITIES
Total	5,566	4,586
Gross Unrealized Gains	15	5
Gross Unrealized Losses	232	283
Fair Value	5,349	4,308
Agency residential mortgage-backed securities | Mortgage-backed securities
SECURITIES AVAILABLE FOR SALE
Amortized Cost	4,534	4,616
Gross Unrealized Gains	0	0
Gross Unrealized Losses	634	696
Fair Value	3,900	3,920
HELD-TO-MATURITY SECURITIES
Total	177	181
Gross Unrealized Gains	0	0
Gross Unrealized Losses	12	16
Fair Value	165	165
Agency commercial mortgage-backed securities | Mortgage-backed securities
SECURITIES AVAILABLE FOR SALE
Amortized Cost	10,848	10,712
Gross Unrealized Gains	5	2
Gross Unrealized Losses	1,194	1,365
Fair Value	9,659	9,349
HELD-TO-MATURITY SECURITIES
Total	2,584	2,522
Gross Unrealized Gains	2	1
Gross Unrealized Losses	184	208
Fair Value	2,402	2,315
Asset-backed securities
HELD-TO-MATURITY SECURITIES
Total	1,219	1,407
Gross Unrealized Gains	0	0
Gross Unrealized Losses	64	96
Fair Value	1,155	1,311
Debt securities, held-to-maturity, purchase of senior notes	1,200	1,400
Other securities
SECURITIES AVAILABLE FOR SALE
Amortized Cost	0	0
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	0	0
HELD-TO-MATURITY SECURITIES
Total	15	14
Gross Unrealized Gains	0	0
Gross Unrealized Losses	1	0
Fair Value	$ 14	$ 14

Securities - Schedule of Availa

Securities - Schedule of Available for Sale Securities (Unrealized Loss Position) (Details) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Held-to-maturity securities:
Temporarily impaired securities, fair value, less than 12 months	$ 6,617	$ 13,776
Temporarily impaired securities, gross unrealized losses, less than 12 months	253	1,140
Temporarily impaired securities, fair value, 12 months or longer	40,677	32,405
Temporarily impaired securities, gross unrealized losses, 12 months or longer	5,926	5,900
Temporarily impaired securities, fair value	47,294	46,181
Temporarily impaired securities, gross unrealized losses	6,179	7,040
U.S. Treasury, agencies and corporations
Securities available for sale:
Fair value, less than 12 months	0	494
Gross unrealized losses, less than 12 months	0	48
Fair value, 12 months or longer	9,514	8,920
Gross unrealized losses, 12 months or longer	513	581
Fair value	9,514	9,414
Gross unrealized losses	513	629
Agency residential collateralized mortgage obligations
Securities available for sale:
Fair value, less than 12 months	127	3,114
Gross unrealized losses, less than 12 months	4	377
Fair value, 12 months or longer	16,297	13,317
Gross unrealized losses, 12 months or longer	3,341	3,370
Fair value	16,424	16,431
Gross unrealized losses	3,345	3,747
Held-to-maturity securities:
Fair value, less than 12 months	2,935	2,659
Gross unrealized losses, less than 12 months	85	178
Fair value, 12 months or longer	1,399	726
Gross unrealized losses, 12 months or longer	147	105
Fair value	4,334	3,385
Gross unrealized losses	232	283
Agency residential mortgage-backed securities
Held-to-maturity securities:
Fair value, less than 12 months	45
Gross unrealized losses, less than 12 months	2
Fair value, 12 months or longer	119
Gross unrealized losses, 12 months or longer	10
Fair value	164
Gross unrealized losses	12
Agency residential mortgage-backed securities | Maximum
Held-to-maturity securities:
Gross unrealized losses	1	1
Agency residential mortgage-backed securities | Mortgage-backed securities
Securities available for sale:
Fair value, less than 12 months	350	579
Gross unrealized losses, less than 12 months	12	31
Fair value, 12 months or longer	3,547	3,338
Gross unrealized losses, 12 months or longer	622	665
Fair value	3,897	3,917
Gross unrealized losses	634	696
Held-to-maturity securities:
Fair value, less than 12 months		165
Gross unrealized losses, less than 12 months		16
Fair value, 12 months or longer		0
Gross unrealized losses, 12 months or longer		0
Fair value		165
Gross unrealized losses		16
Agency commercial mortgage-backed securities
Held-to-maturity securities:
Fair value, less than 12 months	370	2,243
Gross unrealized losses, less than 12 months	32	208
Fair value, 12 months or longer	1,958	0
Gross unrealized losses, 12 months or longer	152	0
Fair value	2,328	2,243
Gross unrealized losses	184	208
Agency commercial mortgage-backed securities | Mortgage-backed securities
Securities available for sale:
Fair value, less than 12 months	2,780	4,511
Gross unrealized losses, less than 12 months	118	282
Fair value, 12 months or longer	6,684	4,791
Gross unrealized losses, 12 months or longer	1,076	1,083
Fair value	9,464	9,302
Gross unrealized losses	1,194	1,365
Asset-backed securities
Held-to-maturity securities:
Fair value, less than 12 months	0	1
Gross unrealized losses, less than 12 months	0	0
Fair value, 12 months or longer	1,155	1,309
Gross unrealized losses, 12 months or longer	64	96
Fair value	1,155	1,310
Gross unrealized losses	64	96
Other securities
Held-to-maturity securities:
Fair value, less than 12 months	10	10
Gross unrealized losses, less than 12 months	0	0
Fair value, 12 months or longer	4	4
Gross unrealized losses, 12 months or longer	1	0
Fair value	14	14
Gross unrealized losses	$ 1	$ 0

Securities - Narrative (Details

Securities - Narrative (Details) $ in Billions	Mar. 31, 2023 USD ($)
Investments, Debt and Equity Securities [Abstract]
Securities pledged to secure securities sold under repurchase agreements	$ 31.5

Securities - Schedule of Securi

Securities - Schedule of Securities by Maturity (Details) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Securities Available for Sale, Amortized Cost
Due in one year or less	$ 1,944
Due after one through five years	15,833
Due after five through ten years	21,477
Due after ten years	5,925
Total	45,179
Securities Available for Sale, Fair Value
Due in one year or less	1,887
Due after one through five years	14,676
Due after five through ten years	18,176
Due after ten years	4,759
Total	39,498	$ 39,117
Held-to-Maturity Securities, Amortized Cost
Due in one year or less	21
Due after one through five years	5,497
Due after five through ten years	3,191
Due after ten years	852
Total	9,561	8,710
Held-to-Maturity Securities, Fair Value
Due in one year or less	21
Due after one through five years	5,222
Due after five through ten years	3,023
Due after ten years	819
Total	$ 9,085	$ 8,113

Derivatives and Hedging Activ_3

Derivatives and Hedging Activities - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Dec. 31, 2022
Credit Derivatives [Line Items]
Derivative assets after effects of bilateral collateral and master netting agreements	$ 15
Derivative liabilities after effects of bilateral collateral and master netting agreements	(38)
Derivative assets not designated as hedging instruments after effects of bilateral collateral and master netting agreements, and a reserve for potential future losses	382
Derivative liabilities not designated as hedging instruments after effects of bilateral collateral and master netting agreements, and a reserve for potential future losses	1,300
Reclassify of after-tax net gains on derivative instruments from AOCI	$ (609)
Length of time hedge in cash flow hedge (in months)	12 months
Reclassification of net losses related to terminated cash flow hedges from AOCI to income	$ (3)
Maximum length of time over which forecasted transactions are hedged (in years)	4 years 9 months 3 days
Cash collateral netted against derivative assets	$ (289)	$ (10)
Collateral netted against derivative liabilities	161	626
Gross exposure on derivatives, after taking into account the effects of bilateral collateral and master netting agreements	632
Net exposure on derivatives, after taking into account, the effects of bilateral collateral and master netting agreements	41
Default reserve associated with uncollateralized contracts	15
Gross exposure on derivatives after taking into account effects of master netting agreements	495
Net exposure on derivatives with clients after application of master netting agreements collateral and related reserve	356
Net liability position totaled	$ 2	$ 2

Derivatives and Hedging Activ_4

Derivatives and Hedging Activities - Schedule of Fair Values, Volume of Activity and Gain (Loss) Information Related to Derivative Instruments (Details) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Derivatives, Fair Value [Line Items]
Notional Amount	$ 161,289	$ 148,690
Derivative assets, netting adjustments	(978)	(757)
Derivative Assets, net	397	1,024
Derivative liabilities, netting adjustments	(850)	(1,262)
Derivative Liabilities, net	1,281	1,483
Amount of offset in excess of collateral posted	184
Amount of offset in excess of collateral held	58
Derivatives Not Designated as Hedging Instruments
Derivatives, Fair Value [Line Items]
Notional Amount	111,046	107,490
Derivative Assets	1,321	1,667
Derivative Liabilities	2,167	2,747
Interest rate | Derivatives Designated as Hedging Instruments
Derivatives, Fair Value [Line Items]
Notional Amount	50,243	41,200
Derivative Assets	54	114
Derivative Liabilities	(23)	3
Interest rate | Derivatives Not Designated as Hedging Instruments
Derivatives, Fair Value [Line Items]
Notional Amount	84,338	80,772
Derivative Assets	187	189
Derivative Liabilities	1,080	1,304
Foreign exchange | Derivatives Not Designated as Hedging Instruments
Derivatives, Fair Value [Line Items]
Notional Amount	10,320	9,507
Derivative Assets	131	136
Derivative Liabilities	113	131
Commodity | Derivatives Not Designated as Hedging Instruments
Derivatives, Fair Value [Line Items]
Notional Amount	14,382	16,176
Derivative Assets	986	1,328
Derivative Liabilities	962	1,304
Credit | Derivatives Not Designated as Hedging Instruments
Derivatives, Fair Value [Line Items]
Notional Amount	146	95
Derivative Assets	1	1
Derivative Liabilities	3	3
Other
Derivatives, Fair Value [Line Items]
Derivative Assets	1
Other | Derivatives Not Designated as Hedging Instruments
Derivatives, Fair Value [Line Items]
Notional Amount	1,860	940
Derivative Assets	16	13
Derivative Liabilities	9	5
Net derivatives
Derivatives, Fair Value [Line Items]
Notional Amount	161,289	148,690
Derivative Assets, net	397	1,024
Derivative Liabilities, net	1,294	1,488
Other collateral
Derivatives, Fair Value [Line Items]
Notional Amount	0	0
Derivative Assets, net	0	0
Derivative Liabilities, net	$ (13)	$ (5)

Derivatives and Hedging Activ_5

Derivatives and Hedging Activities - Schedule of Cumulative Basis Adjustments on Fair Value Hedges (Details) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Derivatives, Fair Value [Line Items]
Fair Value	$ 39,498	$ 39,117
Long-term debt | Interest rate
Derivatives, Fair Value [Line Items]
Carrying amount of hedged item	10,836	10,411
Hedge accounting basis adjustment	(359)	(552)
Long-term debt | Interest rate | Derivatives Not Designated as Hedging Instruments
Derivatives, Fair Value [Line Items]
Hedge accounting basis adjustment	(6)	(6)
Securities Available for Sale | Interest rate
Derivatives, Fair Value [Line Items]
Carrying amount of hedged item	1,663	405
Hedge accounting basis adjustment	53	48
Fair Value	$ 695	$ 708

Derivatives and Hedging Activ_6

Derivatives and Hedging Activities - Schedule of Effect of Fair Value and Cash Flow Hedges on Income (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Derivative Instruments, Gain (Loss) [Line Items]
Interest expense — Long-term debt	$ (275)	$ (49)
Interest income – loans	1,476	837
Interest Income - securities	194	173
Investment banking and debt placement fees	145	163
Net gain (loss) on cash flow hedging relationships
Net Gains (Losses) Reclassified From OCI Into Income	(216)	65
Interest rate | Interest expense – long-term debt | Fair Value Hedging
Net gains (losses) on fair value hedging relationships
Recognized on hedged items	(155)	240
Recognized on derivatives designated as hedging instruments	108	(216)
Net income (expense) recognized on fair value hedges	(47)	24
Interest rate | Interest expense – long-term debt | Cash Flow Hedging
Net gain (loss) on cash flow hedging relationships
Realized gains (losses) (pre-tax) reclassified from AOCI into net income	(1)	(1)
Net income (expense) recognized on cash flow hedges	(1)	(1)
Interest rate | Interest income – loans | Fair Value Hedging
Net gains (losses) on fair value hedging relationships
Recognized on hedged items	0	0
Recognized on derivatives designated as hedging instruments	0	0
Net income (expense) recognized on fair value hedges	0	0
Interest rate | Interest income – loans | Cash Flow Hedging
Net gain (loss) on cash flow hedging relationships
Realized gains (losses) (pre-tax) reclassified from AOCI into net income	(215)	64
Net Gains (Losses) Reclassified From OCI Into Income	(215)	64
Net income (expense) recognized on cash flow hedges	(215)	64
Interest rate | Interest Income - securities | Fair Value Hedging
Net gains (losses) on fair value hedging relationships
Recognized on hedged items	6	(276)
Recognized on derivatives designated as hedging instruments	(2)	282
Net income (expense) recognized on fair value hedges	4	6
Interest rate | Interest Income - securities | Cash Flow Hedging
Net gain (loss) on cash flow hedging relationships
Realized gains (losses) (pre-tax) reclassified from AOCI into net income	0	0
Net income (expense) recognized on cash flow hedges	0	0
Interest rate | Investment banking and debt placement fees | Fair Value Hedging
Net gains (losses) on fair value hedging relationships
Recognized on hedged items	0	0
Recognized on derivatives designated as hedging instruments	0	0
Net income (expense) recognized on fair value hedges	0	0
Interest rate | Investment banking and debt placement fees | Cash Flow Hedging
Net gain (loss) on cash flow hedging relationships
Net Gains (Losses) Reclassified From OCI Into Income	0	2
Net income (expense) recognized on cash flow hedges	$ 0	$ 2

Derivatives and Hedging Activ_7

Derivatives and Hedging Activities - Schedule of Derivative Instrument Cash Flow Hedge Earning Recognized by Income Statement Location (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Derivatives, Fair Value [Line Items]
Net Gains (Losses) Recognized in OCI	$ 107	$ (658)
Net Gains (Losses) Reclassified From OCI Into Income	(216)	65
Interest income – loans | Interest rate | Cash Flow Hedges
Derivatives, Fair Value [Line Items]
Net Gains (Losses) Recognized in OCI	109	(670)
Net Gains (Losses) Reclassified From OCI Into Income	(215)	64
Interest expense — Long-term debt | Interest rate | Cash Flow Hedges
Derivatives, Fair Value [Line Items]
Net Gains (Losses) Recognized in OCI	(1)	3
Net Gains (Losses) Reclassified From OCI Into Income	(1)	(1)
Investment banking and debt placement fees | Interest rate | Cash Flow Hedges
Derivatives, Fair Value [Line Items]
Net Gains (Losses) Recognized in OCI	(1)	9
Net Gains (Losses) Reclassified From OCI Into Income	$ 0	$ 2

Derivatives and Hedging Activ_8

Derivatives and Hedging Activities - Schedule of Pre-Tax Net Gains (Losses) on Derivatives Not Designated as Hedging Instruments (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Derivative Instruments, Gain (Loss) [Line Items]
Total net gains (losses)	$ 15	$ 35
Interest rate
Derivative Instruments, Gain (Loss) [Line Items]
Total net gains (losses)	10	22
Foreign exchange
Derivative Instruments, Gain (Loss) [Line Items]
Total net gains (losses)	13	13
Commodity
Derivative Instruments, Gain (Loss) [Line Items]
Total net gains (losses)	7	5
Credit
Derivative Instruments, Gain (Loss) [Line Items]
Total net gains (losses)	(14)	(8)
Other
Derivative Instruments, Gain (Loss) [Line Items]
Total net gains (losses)	(1)	3
Corporate services income
Derivative Instruments, Gain (Loss) [Line Items]
Total net gains (losses)	32	33
Corporate services income | Interest rate
Derivative Instruments, Gain (Loss) [Line Items]
Total net gains (losses)	12	13
Corporate services income | Foreign exchange
Derivative Instruments, Gain (Loss) [Line Items]
Total net gains (losses)	13	13
Corporate services income | Commodity
Derivative Instruments, Gain (Loss) [Line Items]
Total net gains (losses)	7	5
Corporate services income | Credit
Derivative Instruments, Gain (Loss) [Line Items]
Total net gains (losses)	0	2
Corporate services income | Other
Derivative Instruments, Gain (Loss) [Line Items]
Total net gains (losses)	0	0
Consumer mortgage income
Derivative Instruments, Gain (Loss) [Line Items]
Total net gains (losses)	1	(4)
Consumer mortgage income | Interest rate
Derivative Instruments, Gain (Loss) [Line Items]
Total net gains (losses)	0	0
Consumer mortgage income | Foreign exchange
Derivative Instruments, Gain (Loss) [Line Items]
Total net gains (losses)	0	0
Consumer mortgage income | Commodity
Derivative Instruments, Gain (Loss) [Line Items]
Total net gains (losses)	0	0
Consumer mortgage income | Credit
Derivative Instruments, Gain (Loss) [Line Items]
Total net gains (losses)	0	0
Consumer mortgage income | Other
Derivative Instruments, Gain (Loss) [Line Items]
Total net gains (losses)	1	(4)
Other income
Derivative Instruments, Gain (Loss) [Line Items]
Total net gains (losses)	(18)	6
Other income | Interest rate
Derivative Instruments, Gain (Loss) [Line Items]
Total net gains (losses)	(2)	9
Other income | Foreign exchange
Derivative Instruments, Gain (Loss) [Line Items]
Total net gains (losses)	0	0
Other income | Commodity
Derivative Instruments, Gain (Loss) [Line Items]
Total net gains (losses)	0	0
Other income | Credit
Derivative Instruments, Gain (Loss) [Line Items]
Total net gains (losses)	(14)	(10)
Other income | Other
Derivative Instruments, Gain (Loss) [Line Items]
Total net gains (losses)	$ (2)	$ 7

Derivatives and Hedging Activ_9

Derivatives and Hedging Activities - Schedule of Fair Value of Derivative Assets by Type (Details) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Credit Derivatives [Line Items]
Derivative assets before collateral	$ 686	$ 1,034
Plus(Less): Related collateral	(289)	(10)
Total derivative assets	397	1,024
Interest rate
Credit Derivatives [Line Items]
Derivative assets before collateral	169	136
Foreign exchange
Credit Derivatives [Line Items]
Derivative assets before collateral	63	67
Commodity
Credit Derivatives [Line Items]
Derivative assets before collateral	439	820
Credit
Credit Derivatives [Line Items]
Derivative assets before collateral	0	0
Other
Credit Derivatives [Line Items]
Derivative assets before collateral	$ 15	$ 11

Derivatives and Hedging Acti_10

Derivatives and Hedging Activities - Schedule of Credit Derivatives Sold and Held (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2023	Dec. 31, 2022
Credit Derivatives [Line Items]
Notional Amount	$ 1	$ 1
Payment / Performance Risk	0%	0%
Other
Credit Derivatives [Line Items]
Notional Amount	$ 1	$ 1
Average Term (Years)	11 years 14 days	15 years 2 months 1 day
Payment / Performance Risk	6.05%	5.10%

Derivatives and Hedging Acti_11

Derivatives and Hedging Activities - Schedule of Credit Risk Contingent Feature (Details) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Net derivative liabilities with credit-risk contingent features	$ (171)	$ (612)
Collateral posted	$ 141	$ 534

Mortgage Servicing Assets - Sch

Mortgage Servicing Assets - Schedule of Changes in Carrying Amount of Mortgage Servicing Assets (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Commercial Mortgage Backed Securities
Servicing Asset at Amortized Cost, Balance [Roll Forward]
Balance at beginning of period	$ 653	$ 634
Servicing retained from loan sales	9	30
Purchases	4	11
Amortization	(32)	(31)
Temporary (impairments) recoveries	0	0
Balance at end of period	634	644
Fair value at end of period	981	846
Agency residential mortgage-backed securities
Servicing Asset at Amortized Cost, Balance [Roll Forward]
Balance at beginning of period	106	93
Servicing retained from loan sales	1	11
Purchases	0	0
Amortization	(2)	(4)
Temporary (impairments) recoveries	0	1
Balance at end of period	105	101
Fair value at end of period	$ 129	$ 116

Mortgage Servicing Assets - S_2

Mortgage Servicing Assets - Schedule of Range and Weighted-Average of Significant Unobservable Inputs (Details) - Discounted cash flow - USD ($)	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Commercial Mortgage Backed Securities | Minimum
Servicing Assets at Fair Value [Line Items]
Expected defaults	0.96%	1%
Residual cash flows discount rate	8.57%	8.34%
Escrow earn rate	4.94%	2.06%
Loan assumption rate	0%	0%
Commercial Mortgage Backed Securities | Maximum
Servicing Assets at Fair Value [Line Items]
Expected defaults	2%	2%
Residual cash flows discount rate	10.03%	10.32%
Escrow earn rate	4.95%	2.49%
Loan assumption rate	1.40%	1.64%
Commercial Mortgage Backed Securities | Weighted Average
Servicing Assets at Fair Value [Line Items]
Expected defaults	1.06%	1.12%
Residual cash flows discount rate	9.49%	9.52%
Escrow earn rate	4.94%	2.31%
Loan assumption rate	1.14%	1.29%
Agency residential mortgage-backed securities | Minimum
Servicing Assets at Fair Value [Line Items]
Residual cash flows discount rate	7.50%	7.50%
Prepayment speed	6.41%	5.84%
Servicing cost	$ 62	$ 62
Agency residential mortgage-backed securities | Maximum
Servicing Assets at Fair Value [Line Items]
Residual cash flows discount rate	8.50%	8.52%
Prepayment speed	40.74%	59.51%
Servicing cost	$ 8,075	$ 8,075
Agency residential mortgage-backed securities | Weighted Average
Servicing Assets at Fair Value [Line Items]
Residual cash flows discount rate	7.54%	7.53%
Prepayment speed	7.30%	8.82%
Servicing cost	$ 67.36	$ 67.46

Mortgage Servicing Assets - Nar

Mortgage Servicing Assets - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Commercial Mortgage Backed Securities
Servicing Assets at Fair Value [Line Items]
Contractual fee income from servicing commercial mortgage loans	$ 78	$ 67
Amortization of servicing commercial mortgage loans	32	31
Residential mortgage-backed securities
Servicing Assets at Fair Value [Line Items]
Contractual fee income from servicing commercial mortgage loans	9	10
Amortization of servicing commercial mortgage loans	$ 2	$ 4

Leases (Details)

Leases (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Sales-type and direct financing leases
Interest income on lease receivable	$ 19	$ 16
Interest income related to accretion of unguaranteed residual asset	3	4
Total sales-type and direct financing lease income	22	20
Operating leases
Operating lease income related to lease payments	24	28
Other operating leasing gains	1	4
Total operating lease income and other leasing gains	25	32
Total lease income	$ 47	$ 52

Goodwill (Details)

Goodwill (Details) - USD ($) $ in Millions	9 Months Ended
	Dec. 31, 2022	Mar. 31, 2023
Goodwill [Roll Forward]
Beginning balance	$ 2,693
Goodwill, purchase accounting adjustments	1
Ending balance	2,752
Goodwill	2,752	$ 2,752
Consumer Bank
Goodwill [Roll Forward]
Beginning balance	1,761
Goodwill, purchase accounting adjustments	0
Ending balance	1,819
Goodwill	1,819	1,819
Commercial Bank
Goodwill [Roll Forward]
Beginning balance	932
Goodwill, purchase accounting adjustments	1
Ending balance	933
Goodwill	933	$ 933
GradF in Acquisition
Goodwill [Roll Forward]
Goodwill acquired	58
GradF in Acquisition | Consumer Bank
Goodwill [Roll Forward]
Goodwill acquired	58
GradF in Acquisition | Commercial Bank
Goodwill [Roll Forward]
Goodwill acquired	$ 0

Variable Interest Entities - Na

Variable Interest Entities - Narrative (Details) - USD ($)	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Variable Interest Entity [Line Items]
VIE, assets that can only be used to settle obligations	$ 197,519,000,000		$ 189,813,000,000
VIE, liabilities	183,197,000,000		176,359,000,000
Recurring
Variable Interest Entity [Line Items]
Other investments	61,000,000		77,000,000
Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
VIE, assets that can only be used to settle obligations	1,659,000,000		1,798,000,000
VIE, liabilities	0		1,000,000
Tax credit of investment		$ 45,000,000
Variable Interest Entity, Not Primary Beneficiary | Qualified Affordable Housing Projects Investment
Variable Interest Entity [Line Items]
VIE, liabilities	1,100,000,000		957,000,000
Variable Interest Entity, Not Primary Beneficiary | Other Unconsolidated Variable Interest Entities
Variable Interest Entity [Line Items]
Other investments	1,200,000,000
Variable Interest Entity, Not Primary Beneficiary | Accrued Income And Other Assets
Variable Interest Entity [Line Items]
VIE, assets that can only be used to settle obligations	2,100,000,000		1,900,000,000
Variable Interest Entity, Not Primary Beneficiary | Investments
Variable Interest Entity [Line Items]
Amortization of investment	53,000,000	$ 46,000,000
Tax credit of investment	51,000,000
Variable Interest Entity, Primary Beneficiary | Investments
Variable Interest Entity [Line Items]
VIE, assets that can only be used to settle obligations	0		0
VIE, liabilities	0		0
Measured at NAV | Variable Interest Entity, Not Primary Beneficiary | Recurring | Principal Investments, Indirect
Variable Interest Entity [Line Items]
Other investments	$ 20,000,000		$ 34,000,000

Variable Interest Entities - Sc

Variable Interest Entities - Schedule of Variable Interest Entities Information (Details) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Variable Interest Entity [Line Items]
Total Assets	$ 197,519	$ 189,813
Total Liabilities	183,197	176,359
Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Total Assets	1,659	1,798
Total Liabilities	0	1
Variable Interest Entity, Not Primary Beneficiary | LIHTC investments
Variable Interest Entity [Line Items]
Total Assets	7,921	8,227
Total Liabilities	2,913	3,091
Maximum Exposure to Loss	2,514	2,370
Variable Interest Entity, Not Primary Beneficiary | Principal Investments, Indirect
Variable Interest Entity [Line Items]
Total Assets	4,523	6,636
Total Liabilities	87	90
Maximum Exposure to Loss	$ 23	$ 43

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Income Tax Contingency [Line Items]
Effective tax rate (as a percent)	20.70%	16.70%
Combined federal and state statutory tax rate (as a percent)	23.70%
Valuation allowance	$ 11		$ 11
First Niagara Bank, N.A.
Income Tax Contingency [Line Items]
Allocated bad debt deductions	92
Key Corp
Income Tax Contingency [Line Items]
Unrecognized tax benefits	40
Accrued Income And Other Assets
Income Tax Contingency [Line Items]
Net deferred tax assets	$ 1,700		$ 2,000

Acquisitions and Discontinued_2

Acquisitions and Discontinued Operations (Details) - USD ($) $ in Millions	May 02, 2022	Nov. 19, 2021	Mar. 31, 2023	Dec. 31, 2022
Discontinued operations | Government Guaranteed Loans
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loans included in divestiture			$ 407	$ 434
XUP
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Goodwill acquired		$ 20.6
GradFin
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Goodwill acquired	$ 58
Business combination, consideration transferred	72
Cash payment	62
Contingent consideration	10
Intangible assets acquired	$ 12

Securities Financing Activiti_3

Securities Financing Activities (Details) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Securities Financing Transaction [Line Items]
Reverse repurchase agreements	$ 0	$ 0
Securities borrowed	0	0
Total	0	0
Repurchase agreements	0	0
Total	0	0
Collateral
Securities Financing Transaction [Line Items]
Reverse repurchase agreements	0	0
Securities borrowed	0	0
Total	0	0
Repurchase agreements	(47)	(63)
Total	(47)	(63)
Federal Agency CMOs
Securities Financing Transaction [Line Items]
Assets pledged as collateral	122
Liabilities pledged as collateral	47
Gross Amount Presented in Balance Sheet
Securities Financing Transaction [Line Items]
Reverse repurchase agreements	12	8
Securities borrowed	0	0
Total	12	8
Repurchase agreements	59	71
Total	59	71
Netting Adjustments
Securities Financing Transaction [Line Items]
Reverse repurchase agreements	(12)	(8)
Securities borrowed	0	0
Total	(12)	(8)
Repurchase agreements	(12)	(8)
Total	$ (12)	$ (8)

Employee Benefits (Details)

Employee Benefits (Details) - Pension Plans - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Defined Benefit Plan Disclosure [Line Items]
Interest cost on PBO	$ 11	$ 7
Expected return on plan assets	(11)	(7)
Amortization of losses	3	4
Settlement loss	0	0
Net pension cost	$ 3	$ 4

Trust Preferred Securities Is_3

Trust Preferred Securities Issued by Unconsolidated Subsidiaries (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Dec. 31, 2022
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common Stock	$ 1,257	$ 1,257
Debentures adjustments related to financial instrument hedging	21	17
KeyCorp Capital I
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Trust Preferred Securities, Net of Discount	156
Common Stock	6
Principal Amount of Debentures, Net of Discount	$ 162
Interest Rate of Trust Preferred Securities and Debentures	5.494%
KeyCorp Capital I | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Basis spread on variable rate	0.74%
KeyCorp Capital II
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Trust Preferred Securities, Net of Discount	$ 90
Common Stock	4
Principal Amount of Debentures, Net of Discount	$ 94
Interest Rate of Trust Preferred Securities and Debentures	6.875%
KeyCorp Capital II | Treasury Rate
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Basis spread on variable rate	0.20%
KeyCorp Capital III
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Trust Preferred Securities, Net of Discount	$ 116
Common Stock	4
Principal Amount of Debentures, Net of Discount	$ 120
Interest Rate of Trust Preferred Securities and Debentures	7.75%
KeyCorp Capital III | Treasury Rate
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Basis spread on variable rate	0.25%
HNC Statutory Trust III
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Trust Preferred Securities, Net of Discount	$ 20
Common Stock	1
Principal Amount of Debentures, Net of Discount	$ 21
Interest Rate of Trust Preferred Securities and Debentures	6.322%
HNC Statutory Trust III | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Basis spread on variable rate	1.40%
HNC Statutory Trust IV
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Trust Preferred Securities, Net of Discount	$ 20
Common Stock	1
Principal Amount of Debentures, Net of Discount	$ 21
Interest Rate of Trust Preferred Securities and Debentures	6.176%
HNC Statutory Trust IV | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Basis spread on variable rate	1.28%
Willow Grove Statutory Trust I
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Trust Preferred Securities, Net of Discount	$ 18
Common Stock	1
Principal Amount of Debentures, Net of Discount	$ 19
Interest Rate of Trust Preferred Securities and Debentures	6.082%
Willow Grove Statutory Trust I | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Basis spread on variable rate	1.31%
Westbank Capital Trust II
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Trust Preferred Securities, Net of Discount	$ 8
Common Stock	0
Principal Amount of Debentures, Net of Discount	$ 8
Interest Rate of Trust Preferred Securities and Debentures	7.153%
Westbank Capital Trust III
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Trust Preferred Securities, Net of Discount	$ 8
Common Stock	0
Principal Amount of Debentures, Net of Discount	$ 8
Interest Rate of Trust Preferred Securities and Debentures	7.153%
Business Trusts
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Trust Preferred Securities, Net of Discount	$ 436	433
Common Stock	17	17
Principal Amount of Debentures, Net of Discount	$ 453	$ 450
Interest Rate of Trust Preferred Securities and Debentures	6.533%	5.321%
Keycorp Capital II and III | Redemption Upon Either Tax or a Capital Treatment Event | Treasury Rate
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Basis spread on variable rate	0.50%
Westbank Capital Trust II and III | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Basis spread on variable rate	2.19%

Contingent Liabilities and Gu_3

Contingent Liabilities and Guarantees - Schedule of Guarantees (Details) $ in Millions	Mar. 31, 2023 USD ($)
Guarantor Obligations [Line Items]
Maximum Potential Undiscounted Future Payments	$ 18,654
Liability Recorded	434
Standby letters of credit
Guarantor Obligations [Line Items]
Maximum Potential Undiscounted Future Payments	4,838
Liability Recorded	90
Recourse agreement with FNMA
Guarantor Obligations [Line Items]
Maximum Potential Undiscounted Future Payments	6,812
Liability Recorded	83
Residential mortgage reserve
Guarantor Obligations [Line Items]
Maximum Potential Undiscounted Future Payments	3,279
Liability Recorded	13
Written Put Options, Guarantees
Guarantor Obligations [Line Items]
Maximum Potential Undiscounted Future Payments	3,725
Liability Recorded	$ 248

Contingent Liabilities and Gu_4

Contingent Liabilities and Guarantees - Narrative (Details) $ in Millions	3 Months Ended
	Mar. 31, 2023 USD ($)
Standby letters of credit
Commitments Contingencies And Guarantees [Line Items]
Remaining weighted-average life of standby letters of credit (in years)	1 year 6 months
Recourse agreement with FNMA
Commitments Contingencies And Guarantees [Line Items]
Weighted-average remaining term for outstanding commercial mortgage loans (in years)	7 years 3 months 18 days
Unpaid principal balance outstanding of loans sold	$ 22,200
Maximum potential amount of undiscounted future payments possibly required as percentage of principal balance of loans outstanding (as a percent)	30.70%
Residential mortgage reserve
Commitments Contingencies And Guarantees [Line Items]
Unpaid principal balance outstanding of loans sold	$ 10,900
Maximum potential amount of undiscounted future payments possibly required as percentage of principal balance of loans outstanding (as a percent)	30%
Liability for estimated repurchase obligations on loans sold	$ 13
Written Put Options, Guarantees
Commitments Contingencies And Guarantees [Line Items]
Weighted average life of written put options (in years)	2 years
Minimum | Standby letters of credit
Commitments Contingencies And Guarantees [Line Items]
Remaining actual life of standby letters of credit (in years)	1 year
Minimum | Low
Commitments Contingencies And Guarantees [Line Items]
Guarantee obligations (as a percent)	0%
Minimum | Moderate
Commitments Contingencies And Guarantees [Line Items]
Guarantee obligations (as a percent)	30%
Minimum | High
Commitments Contingencies And Guarantees [Line Items]
Guarantee obligations (as a percent)	70%
Maximum | Standby letters of credit
Commitments Contingencies And Guarantees [Line Items]
Remaining actual life of standby letters of credit (in years)	11 years 8 months 12 days
Maximum | Low
Commitments Contingencies And Guarantees [Line Items]
Guarantee obligations (as a percent)	30%
Maximum | Moderate
Commitments Contingencies And Guarantees [Line Items]
Guarantee obligations (as a percent)	70%

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Income - Schedule of Changes in AOCI (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ 13,454
Other comprehensive income before reclassification, net of income taxes	654	$ (2,296)
Amounts reclassified from AOCI, net of income taxes	167	(47)
Total other comprehensive income (loss), net of tax	821	(2,343)
Ending balance	14,322
Accumulated Other Comprehensive Income (Loss)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(6,295)	(586)
Total other comprehensive income (loss), net of tax	821	(2,343)
Ending balance	(5,474)	(2,929)
Unrealized gains (losses) on securities available for sale
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(4,895)	(403)
Other comprehensive income before reclassification, net of income taxes	575	(1,784)
Amounts reclassified from AOCI, net of income taxes	0	0
Total other comprehensive income (loss), net of tax	575	(1,784)
Ending balance	(4,320)	(2,187)
Unrealized gains (losses) on derivative financial instruments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(1,124)	88
Other comprehensive income before reclassification, net of income taxes	80	(511)
Amounts reclassified from AOCI, net of income taxes	165	(50)
Total other comprehensive income (loss), net of tax	245	(561)
Ending balance	(879)	(473)
Net pension and postretirement benefit costs
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(276)	(271)
Other comprehensive income before reclassification, net of income taxes	(1)	(1)
Amounts reclassified from AOCI, net of income taxes	2	3
Total other comprehensive income (loss), net of tax	1	2
Ending balance	$ (275)	$ (269)

Accumulated Other Comprehensi_4

Accumulated Other Comprehensive Income - Schedule of Reclassifications Out of AOCI (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest income — Loans	$ 1,476	$ 837
Interest expense — Long-term debt	(275)	(49)
Investment banking and debt placement fees	145	163
Income taxes	81	90
Other expense	701	630
INCOME (LOSS) FROM CONTINUING OPERATIONS	311	447
Reclassification out of Accumulated Other Comprehensive Income | Unrealized gains (losses) on derivative financial instruments
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Investment banking and debt placement fees	0	2
Income (loss) from continuing operations before income taxes	(216)	65
Income taxes	(51)	15
INCOME (LOSS) FROM CONTINUING OPERATIONS	(165)	50
Reclassification out of Accumulated Other Comprehensive Income | Unrealized gains (losses) on derivative financial instruments | Interest income — Loans
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest income — Loans	(215)	64
Reclassification out of Accumulated Other Comprehensive Income | Unrealized gains (losses) on derivative financial instruments | Interest expense — Long-term debt
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense — Long-term debt	(1)	(1)
Reclassification out of Accumulated Other Comprehensive Income | Amortization of losses
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other expense	(3)	(4)
Reclassification out of Accumulated Other Comprehensive Income | Settlement loss
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other expense	0	0
Reclassification out of Accumulated Other Comprehensive Income | Net pension and postretirement benefit costs
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income (loss) from continuing operations before income taxes	(3)	(4)
Income taxes	(1)	(1)
INCOME (LOSS) FROM CONTINUING OPERATIONS	$ (2)	$ (3)

Shareholders' Equity - Narrativ

Shareholders' Equity - Narrative (Details) - USD ($)	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Jul. 31, 2021
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Amount repurchased during period	$ 38,000,000	$ 0
Cash dividends declared on Common Shares (in usd per share)	$ 0.205	$ 0.195
Employee Equity Compensation Programs
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Stock repurchase program, amount authorized (up to)			$ 1,500,000,000
Remaining authorized amount	$ 752,000,000
Equity Compensation Programs
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Amount repurchased during period	$ 34,000,000
2021 Capital Plan
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Cash dividends declared on Common Shares (in usd per share)	$ 0.205

Shareholders' Equity - Schedule

Shareholders' Equity - Schedule of Stockholders Equity (Details)	3 Months Ended
	Mar. 31, 2023 USD ($) $ / shares shares
Series D Preferred Stock
Class of Stock [Line Items]
Preferred stock, dividend rate (as a percent)	5%
Preferred stock, amount outstanding | $	$ 525,000,000
Preferred stock, shares authorized (in shares) | shares	21,000
Preferred stock, shares outstanding (in shares) | shares	21,000
Preferred stock, par value (in usd per share)	$ 1
Preferred stock, liquidation preference, value | $	$ 25,000
Depository Shares, Series D
Class of Stock [Line Items]
Depository receipt ratio	0.04
Preferred stock, liquidation preference (in usd per share)	$ 1,000
Dividend payable per share (in usd per share)	$ 12.50
Series E Preferred Stock
Class of Stock [Line Items]
Preferred stock, dividend rate (as a percent)	6.125%
Preferred stock, amount outstanding | $	$ 500,000,000
Preferred stock, shares authorized (in shares) | shares	500,000
Preferred stock, shares outstanding (in shares) | shares	500,000
Preferred stock, par value (in usd per share)	$ 1
Preferred stock, liquidation preference, value | $	$ 1,000
Depository Shares, Series E
Class of Stock [Line Items]
Depository receipt ratio	0.025
Preferred stock, liquidation preference (in usd per share)	$ 25
Dividend payable per share (in usd per share)	$ 0.382813
Series F Preferred Stock
Class of Stock [Line Items]
Preferred stock, dividend rate (as a percent)	5.65%
Preferred stock, amount outstanding | $	$ 425,000,000
Preferred stock, shares authorized (in shares) | shares	425,000
Preferred stock, shares outstanding (in shares) | shares	425,000
Preferred stock, par value (in usd per share)	$ 1
Preferred stock, liquidation preference, value | $	$ 1,000
Depository Shares, Series F
Class of Stock [Line Items]
Depository receipt ratio	0.025
Preferred stock, liquidation preference (in usd per share)	$ 25
Dividend payable per share (in usd per share)	$ 0.353125
Series G Preferred Stock
Class of Stock [Line Items]
Preferred stock, dividend rate (as a percent)	5.625%
Preferred stock, amount outstanding | $	$ 450,000,000
Preferred stock, shares authorized (in shares) | shares	450,000
Preferred stock, shares outstanding (in shares) | shares	450,000
Preferred stock, par value (in usd per share)	$ 1
Preferred stock, liquidation preference, value | $	$ 1,000
Depository Shares, Series G
Class of Stock [Line Items]
Depository receipt ratio	0.025
Preferred stock, liquidation preference (in usd per share)	$ 25
Dividend payable per share (in usd per share)	$ 0.351563
Series H Preferred Stock
Class of Stock [Line Items]
Preferred stock, dividend rate (as a percent)	6.20%
Preferred stock, amount outstanding | $	$ 600,000,000
Preferred stock, shares authorized (in shares) | shares	600,000
Preferred stock, shares outstanding (in shares) | shares	600,000
Preferred stock, par value (in usd per share)	$ 1
Preferred stock, liquidation preference, value | $	$ 1,000
Depository Shares, Series H
Class of Stock [Line Items]
Depository receipt ratio	0.025
Preferred stock, liquidation preference (in usd per share)	$ 25
Dividend payable per share (in usd per share)	$ 0.387500

Business Segment Reporting - Na

Business Segment Reporting - Narrative (Details)	Mar. 31, 2023 branch
Consumer Bank
Segment Reporting Information [Line Items]
Number of state branch networks	15
Commercial Bank
Segment Reporting Information [Line Items]
Number of state branch networks	15

Business Segment Reporting - Sc

Business Segment Reporting - Schedule of Selected Financial Data for Our Business Segments (Details) $ in Millions	3 Months Ended
	Mar. 31, 2023 USD ($) employee	Mar. 31, 2022 USD ($) employee
SUMMARY OF OPERATIONS
Net interest income (TE)	$ 1,106	$ 1,020
Noninterest income	608	676
Total revenue (TE)	1,714	1,696
Provision for credit losses	139	83
Depreciation and amortization expense	61	70
Other noninterest expense	1,115	1,000
Income (loss) from continuing operations before income taxes (TE)	399	543
Allocated income taxes and TE adjustments	88	96
INCOME (LOSS) FROM CONTINUING OPERATIONS	311	447
Income (loss) from discontinued operations, net of taxes	1	1
NET INCOME (LOSS)	312	448
Less: Net income (loss) attributable to noncontrolling interests	0	0
NET INCOME (LOSS) ATTRIBUTABLE TO KEY	312	448
AVERAGE BALANCES
Loans and leases	119,837	103,762
Total assets	190,851	182,589
Deposits	143,405	150,163
OTHER FINANCIAL DATA
Net loan charge-offs	$ 45	$ 33
Return on average allocated equity, continuing operations (as a percent)	9.13%	10.80%
Return on average allocated equity (as a percent)	9.16%	10.83%
Average full-time equivalent employees | employee	18,220	17,109
Operating Segments | Consumer Bank
SUMMARY OF OPERATIONS
Net interest income (TE)	$ 614	$ 543
Noninterest income	228	256
Total revenue (TE)	842	799
Provision for credit losses	60	43
Depreciation and amortization expense	21	21
Other noninterest expense	654	642
Income (loss) from continuing operations before income taxes (TE)	107	93
Allocated income taxes and TE adjustments	26	22
INCOME (LOSS) FROM CONTINUING OPERATIONS	81	71
Income (loss) from discontinued operations, net of taxes	0	0
NET INCOME (LOSS)	81	71
Less: Net income (loss) attributable to noncontrolling interests	0	0
NET INCOME (LOSS) ATTRIBUTABLE TO KEY	81	71
AVERAGE BALANCES
Loans and leases	43,086	38,654
Total assets	45,911	41,786
Deposits	84,492	91,516
OTHER FINANCIAL DATA
Net loan charge-offs	$ 24	$ 22
Return on average allocated equity, continuing operations (as a percent)	8.98%	8.02%
Return on average allocated equity (as a percent)	8.98%	8.02%
Average full-time equivalent employees | employee	8,046	7,885
Operating Segments | Commercial Bank
SUMMARY OF OPERATIONS
Net interest income (TE)	$ 475	$ 414
Noninterest income	366	394
Total revenue (TE)	841	808
Provision for credit losses	80	41
Depreciation and amortization expense	23	31
Other noninterest expense	405	383
Income (loss) from continuing operations before income taxes (TE)	333	353
Allocated income taxes and TE adjustments	69	69
INCOME (LOSS) FROM CONTINUING OPERATIONS	264	284
Income (loss) from discontinued operations, net of taxes	0	0
NET INCOME (LOSS)	264	284
Less: Net income (loss) attributable to noncontrolling interests	0	0
NET INCOME (LOSS) ATTRIBUTABLE TO KEY	264	284
AVERAGE BALANCES
Loans and leases	76,306	64,684
Total assets	85,852	74,816
Deposits	52,185	57,241
OTHER FINANCIAL DATA
Net loan charge-offs	$ 21	$ 11
Return on average allocated equity, continuing operations (as a percent)	10.39%	13.26%
Return on average allocated equity (as a percent)	10.39%	13.26%
Average full-time equivalent employees | employee	2,517	2,416
Other
SUMMARY OF OPERATIONS
Net interest income (TE)	$ 17	$ 63
Noninterest income	14	26
Total revenue (TE)	31	89
Provision for credit losses	(1)	(1)
Depreciation and amortization expense	17	18
Other noninterest expense	56	(25)
Income (loss) from continuing operations before income taxes (TE)	(41)	97
Allocated income taxes and TE adjustments	(7)	5
INCOME (LOSS) FROM CONTINUING OPERATIONS	(34)	92
Income (loss) from discontinued operations, net of taxes	1	1
NET INCOME (LOSS)	(33)	93
Less: Net income (loss) attributable to noncontrolling interests	0	0
NET INCOME (LOSS) ATTRIBUTABLE TO KEY	(33)	93
AVERAGE BALANCES
Loans and leases	445	424
Total assets	59,088	65,987
Deposits	6,728	1,406
OTHER FINANCIAL DATA
Net loan charge-offs	$ 0	$ 0
Return on average allocated equity, continuing operations (as a percent)	95.76%	8.29%
Return on average allocated equity (as a percent)	92.94%	8.38%
Average full-time equivalent employees | employee	7,657	6,808

Revenue from Contracts with C_3

Revenue from Contracts with Customers (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	$ 375	$ 404
Noninterest income	608	676
Contract assets	0	0
Contract liabilities	0	0
Trust and investment services income
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	116	124
Investment banking and debt placement fees
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	113	109
Services charges on deposit accounts
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	67	91
Cards and payments income
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	77	78
Other noninterest income
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	2	2
Noninterest income	219	246
Operating Segments | Consumer Bank
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	186	205
Operating Segments | Consumer Bank | Trust and investment services income
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	100	106
Operating Segments | Consumer Bank | Investment banking and debt placement fees
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	0	0
Operating Segments | Consumer Bank | Services charges on deposit accounts
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	39	55
Operating Segments | Consumer Bank | Cards and payments income
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	45	42
Operating Segments | Consumer Bank | Other noninterest income
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	2	2
Operating Segments | Commercial Bank
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	189	199
Operating Segments | Commercial Bank | Trust and investment services income
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	16	18
Operating Segments | Commercial Bank | Investment banking and debt placement fees
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	113	109
Operating Segments | Commercial Bank | Services charges on deposit accounts
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	28	36
Operating Segments | Commercial Bank | Cards and payments income
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	32	36
Operating Segments | Commercial Bank | Other noninterest income
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	0	0
Other
Disaggregation of Revenue [Line Items]
Noninterest income	$ 14	$ 26