First Horizon (FHN) 10-Q 2 Aug 24 2024 Q2 Quarterly report Financial data

Cover

Cover - shares	6 Months Ended
	Jun. 30, 2024	Jul. 31, 2024
Entity Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2024
Document Transition Report	false
Entity File Number	001-15185
Entity Registrant Name	FIRST HORIZON CORP
Entity Incorporation, State or Country Code	TN
Entity Tax Identification Number	62-0803242
Entity Address, Address Line One	165 Madison Avenue
Entity Address, City or Town	Memphis,
Entity Address, State or Province	TN
Entity Address, Postal Zip Code	38103
City Area Code	901
Local Phone Number	523-4444
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		535,893,064
Entity Central Index Key	0000036966
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	Q2
Amendment Flag	false
$0.625 Par Value Common Capital Stock
Entity Information [Line Items]
Title of 12(b) Security	$0.625 Par Value Common Capital Stock
Trading Symbol	FHN
Security Exchange Name	NYSE
Depositary Shares, each representing a 1/400th interest in a share of Non-Cumulative Perpetual Preferred Stock, Series B
Entity Information [Line Items]
Title of 12(b) Security	Depositary Shares, each representing a 1/400th interest ina share of Non-Cumulative Perpetual Preferred Stock, Series B
Trading Symbol	FHN PR B
Security Exchange Name	NYSE
Depositary Shares, each representing a 1/400th interest in a share of Non-Cumulative Perpetual Preferred Stock, Series C
Entity Information [Line Items]
Title of 12(b) Security	Depositary Shares, each representing a 1/400th interest ina share of Non-Cumulative Perpetual Preferred Stock, Series C
Trading Symbol	FHN PR C
Security Exchange Name	NYSE
Depositary Shares, each representing a 1/4,000th interest in a share of Non-Cumulative Perpetual Preferred Stock, Series E
Entity Information [Line Items]
Title of 12(b) Security	Depositary Shares, each representing a 1/4,000th interest ina share of Non-Cumulative Perpetual Preferred Stock, Series E
Trading Symbol	FHN PR E
Security Exchange Name	NYSE
Depositary Shares, each representing a 1/4,000th interest in a share of Non-Cumulative Perpetual Preferred Stock, Series F
Entity Information [Line Items]
Title of 12(b) Security	Depositary Shares, each representing a 1/4,000th interest ina share of Non-Cumulative Perpetual Preferred Stock, Series F
Trading Symbol	FHN PR F
Security Exchange Name	NYSE

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Assets
Cash and due from banks	$ 969	$ 1,012
Interest-bearing deposits with banks	1,452	1,328
Federal funds sold and securities purchased under agreements to resell	487	719
Trading securities	1,249	1,412
Securities available for sale at fair value	7,924	8,391
Securities held to maturity (fair value of $1,108 and $1,161, respectively)	1,297	1,323
Loans held for sale (including $117 and $68 at fair value, respectively)	471	502
Loans and leases	62,781	61,292
Allowance for loan and lease losses	(821)	(773)
Net loans and leases	61,960	60,519
Premises and equipment	584	590
Goodwill	1,510	1,510
Other intangible assets	165	186
Other assets	4,162	4,169
Total assets	82,230	81,661
Liabilities
Noninterest-bearing deposits	16,348	17,204
Interest-bearing deposits	48,446	48,576
Total deposits	64,794	65,780
Trading liabilities	423	509
Short-term borrowings	4,515	2,549
Term borrowings	1,175	1,150
Other liabilities	2,368	2,382
Total liabilities	73,275	72,370
Equity
Preferred stock, Non-cumulative perpetual, no par value; authorized 5,000,000 shares; issued 16,750 and 26,750 shares, respectively	426	520
Common stock, $0.625 par value; authorized 700,000,000 shares; issued 536,875,750 and 558,838,694 shares, respectively	336	349
Capital surplus	5,007	5,351
Retained earnings	4,172	3,964
Accumulated other comprehensive loss, net	(1,281)	(1,188)
FHN shareholders' equity	8,660	8,996
Noncontrolling interest	295	295
Total equity	8,955	9,291
Total liabilities and equity	$ 82,230	$ 81,661

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Statement of Financial Position [Abstract]
Securities held to maturity, fair value	$ 1,108	$ 1,161
Loans held for sale, fair value	$ 117	$ 68
Preferred stock, authorized (in shares)	5,000,000	5,000,000
Preferred stock, issued (in shares)	16,750	26,750
Common stock, par value (in dollars per share)	$ 0.625	$ 0.625
Common stock, authorized (in shares)	700,000,000	700,000,000
Common stock, issued (in shares)	536,875,750	558,838,694

CONSOLIDATED STATEMENTS OF INCO

CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Interest income
Interest and fees on loans and leases	$ 975	$ 877	$ 1,927	$ 1,683
Interest and fees on loans held for sale	9	14	17	24
Interest on investment securities	59	63	119	125
Interest on trading securities	21	18	42	38
Interest on other earning assets	29	43	60	64
Total interest income	1,093	1,015	2,165	1,934
Interest expense
Interest on deposits	399	265	797	436
Interest on trading liabilities	7	2	12	5
Interest on short-term borrowings	41	99	70	136
Interest on term borrowings	17	19	33	39
Total interest expense	464	385	912	616
Net interest income	629	630	1,253	1,318
Provision for credit losses	55	50	105	100
Net interest income after provision for credit losses	574	580	1,148	1,218
Noninterest income
Deposit transactions and cash management	44	45	88	87
Fixed income	40	30	92	69
Brokerage, management fees and commissions	25	22	49	44
Card and digital banking fees	20	21	38	40
Other service charges and fees	14	14	27	27
Trust services and investment management	12	12	24	24
Mortgage banking income	10	6	19	11
Gain on merger termination	0	225	0	225
Securities gains (losses), net	1	0	1	1
Other income	20	25	43	43
Total noninterest income	186	400	381	571
Noninterest expense
Personnel expense	279	285	580	556
Net occupancy expense	31	30	62	61
Computer software	29	28	59	55
Operations services	23	22	45	44
Legal and professional fees	18	12	33	20
Deposit insurance expense	16	13	40	26
Contract employment and outsourcing	14	12	28	24
Advertising and public relations	14	17	22	31
Amortization of intangible assets	11	12	22	24
Equipment expense	11	10	22	21
Communications and delivery	8	9	16	18
Contributions	1	53	2	57
Other expense	45	52	84	96
Total noninterest expense	500	555	1,015	1,033
Income before income taxes	260	425	514	756
Income tax expense	56	96	113	171
Net income	204	329	401	585
Net income attributable to noncontrolling interest	5	4	10	9
Net income attributable to controlling interest	199	325	391	576
Preferred stock dividends	15	8	23	16
Net income available to common shareholders	184	317	368	560
Net income available to common shareholders	$ 184	$ 317	$ 368	$ 560
Basic earnings per common share (in dollars per share)	$ 0.34	$ 0.59	$ 0.67	$ 1.04
Diluted earnings per common share (in dollars per share)	$ 0.34	$ 0.56	$ 0.67	$ 1
Weighted average common shares (in shares)	543,981	539,120	549,479	538,035
Diluted average common shares (in shares)	547,093	560,878	552,539	562,188

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Statements of Comprehensive Income/(loss)
Net income	$ 204	$ 329	$ 401	$ 585
Other comprehensive income (loss), net of tax:
Net unrealized gains (losses) on securities available for sale	(10)	(105)	(65)	9
Net unrealized gains (losses) on cash flow hedges	(2)	(46)	(32)	(2)
Net unrealized gains (losses) on pension and other postretirement plans	2	0	4	2
Other comprehensive income (loss)	(10)	(151)	(93)	9
Comprehensive income (loss)	194	178	308	594
Comprehensive income attributable to noncontrolling interest	5	4	10	9
Comprehensive income (loss) attributable to controlling interest	189	174	298	585
Income tax expense (benefit) of items included in other comprehensive income:
Net unrealized gains (losses) on securities available for sale	(3)	(34)	(22)	2
Net unrealized gains (losses) on cash flow hedges	(1)	(15)	(10)	(1)
Net unrealized gains (losses) on pension and other postretirement plans	$ 1	$ 1	$ 1	$ 1

CONSOLIDATED STATEMENTS OF CHAN

CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY - USD ($) $ in Millions		Total	Series D	Series G	Adjustment	Preferred Stock	Preferred Stock Series D	Common Stock	Common Stock Series G	Capital Surplus	Capital Surplus Series G	Retained Earnings	Retained Earnings Series D	Retained Earnings Adjustment	Accumulated Other Comprehensive Income (Loss)		Noncontrolling Interest
Preferred stock, balance, beginning of period (in shares) at Dec. 31, 2022						31,686,000
Common stock, balance, beginning of period (in shares) at Dec. 31, 2022								537,101,000
Balance, beginning of period at Dec. 31, 2022		$ 8,547			$ 4	$ 1,014		$ 336		$ 4,840		$ 3,430		$ 4	$ (1,368)	[1]	$ 295
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		255										251					4
Other comprehensive income (loss)		160													160	[1]
Cash dividends declared:
Preferred stock		(8)										(8)
Common stock		(82)										(82)
Common stock repurchased (in shares)								(159,000)
Common stock repurchased		(4)								(4)
Common stock issued for:
Stock options exercised and restricted stock awards (in shares)								677,000
Stock options exercised and restricted stock awards		5								5
Stock-based compensation expense		22								22
Dividends declared - noncontrolling interest of subsidiary preferred stock		(4)															(4)
Preferred stock, balance, ending of period (in shares) at Mar. 31, 2023						31,686,000
Common stock, balance, ending of period (in shares) at Mar. 31, 2023								537,619,000
Balance, ending of period at Mar. 31, 2023		8,895				$ 1,014		$ 336		4,863		3,595			(1,208)	[1]	295
Preferred stock, balance, beginning of period (in shares) at Dec. 31, 2022						31,686,000
Common stock, balance, beginning of period (in shares) at Dec. 31, 2022								537,101,000
Balance, beginning of period at Dec. 31, 2022		8,547			4	$ 1,014		$ 336		4,840		3,430		4	(1,368)	[1]	295
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		585
Other comprehensive income (loss)		9													9
Common stock issued for:
Series G preferred stock conversion		493
Preferred stock, balance, ending of period (in shares) at Jun. 30, 2023						26,750,000
Common stock, balance, ending of period (in shares) at Jun. 30, 2023								558,659,000
Balance, ending of period at Jun. 30, 2023		8,960				$ 520		$ 349		5,325		3,830			(1,359)	[1]	295
Preferred stock, balance, beginning of period (in shares) at Dec. 31, 2022						31,686,000
Common stock, balance, beginning of period (in shares) at Dec. 31, 2022								537,101,000
Balance, beginning of period at Dec. 31, 2022		8,547			4	$ 1,014		$ 336		4,840		3,430		4	(1,368)	[1]	295
Preferred stock, balance, ending of period (in shares) at Dec. 31, 2023						26,750,000
Common stock, balance, ending of period (in shares) at Dec. 31, 2023								558,839,000
Balance, ending of period at Dec. 31, 2023		$ 9,291			8	$ 520		$ 349		5,351		3,964		8	(1,188)	[2]	295
Common stock issued for:
Accounting Standards Update [Extensible List]		Accounting Standards Update 2023-02
Preferred stock, balance, beginning of period (in shares) at Mar. 31, 2023						31,686,000
Common stock, balance, beginning of period (in shares) at Mar. 31, 2023								537,619,000
Balance, beginning of period at Mar. 31, 2023		$ 8,895				$ 1,014		$ 336		4,863		3,595			(1,208)	[1]	295
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		329										325					4
Other comprehensive income (loss)		(151)													(151)	[1]
Cash dividends declared:
Preferred stock		(8)										(8)
Common stock		(82)										(82)
Series D preferred stock redemption (in shares)						(4,936,000)
Series D preferred stock redemption		(494)				$ (494)						0
Common stock repurchased (in shares)								(575,000)
Common stock repurchased		(5)								(5)
Common stock issued for:
Stock options exercised and restricted stock awards (in shares)								1,872,000
Stock options exercised and restricted stock awards		0
Series G preferred stock conversion (in shares)									19,743,000
Series G preferred stock conversion				$ 493					$ 12		$ 481
Stock-based compensation expense		(13)						$ 1		(14)
Dividends declared - noncontrolling interest of subsidiary preferred stock		(4)															(4)
Preferred stock, balance, ending of period (in shares) at Jun. 30, 2023						26,750,000
Common stock, balance, ending of period (in shares) at Jun. 30, 2023								558,659,000
Balance, ending of period at Jun. 30, 2023		8,960				$ 520		$ 349		5,325		3,830			(1,359)	[1]	295
Preferred stock, balance, beginning of period (in shares) at Dec. 31, 2023						26,750,000
Common stock, balance, beginning of period (in shares) at Dec. 31, 2023								558,839,000
Balance, beginning of period at Dec. 31, 2023		9,291			8	$ 520		$ 349		5,351		3,964		8	(1,188)	[2]	295
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		197										192					5
Other comprehensive income (loss)		(83)													(83)	[2]
Cash dividends declared:
Preferred stock		(8)										(8)
Common stock		(84)										(84)
Common stock repurchased (in shares)	[3]							(11,052,000)
Common stock repurchased	[3]	(159)						$ (7)		(152)
Excise tax on common stock repurchased		(2)								(2)
Common stock issued for:
Stock options exercised and restricted stock awards (in shares)								850,000
Stock options exercised and restricted stock awards		0
Stock-based compensation expense		18						$ 1		17
Dividends declared - noncontrolling interest of subsidiary preferred stock		(5)															(5)
Preferred stock, balance, ending of period (in shares) at Mar. 31, 2024						26,750,000
Common stock, balance, ending of period (in shares) at Mar. 31, 2024								548,637,000
Balance, ending of period at Mar. 31, 2024		9,173				$ 520		$ 343		5,214		4,072			(1,271)	[2]	295
Preferred stock, balance, beginning of period (in shares) at Dec. 31, 2023						26,750,000
Common stock, balance, beginning of period (in shares) at Dec. 31, 2023								558,839,000
Balance, beginning of period at Dec. 31, 2023		9,291			$ 8	$ 520		$ 349		5,351		3,964		$ 8	(1,188)	[2]	295
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		401
Other comprehensive income (loss)		(93)													(93)
Cash dividends declared:
Series D preferred stock redemption												(7)
Common stock issued for:
Series G preferred stock conversion		$ 0
Preferred stock, balance, ending of period (in shares) at Jun. 30, 2024		16,750	0			16,750,000
Common stock, balance, ending of period (in shares) at Jun. 30, 2024								536,876,000
Balance, ending of period at Jun. 30, 2024		$ 8,955				$ 426		$ 336		5,007		4,172			(1,281)	[2]	295
Preferred stock, balance, beginning of period (in shares) at Mar. 31, 2024						26,750,000
Common stock, balance, beginning of period (in shares) at Mar. 31, 2024								548,637,000
Balance, beginning of period at Mar. 31, 2024		9,173				$ 520		$ 343		5,214		4,072			(1,271)	[2]	295
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		204										199					5
Other comprehensive income (loss)		(10)													(10)	[2]
Cash dividends declared:
Preferred stock		(8)										(8)
Common stock		(84)										(84)
Series D preferred stock redemption (in shares)							(10,000,000)
Series D preferred stock redemption			$ (100)				$ (94)					(7)	$ (6)
Excise tax on preferred stock redemption		(1)										(1)
Common stock repurchased (in shares)	[3]							(14,896,000)
Common stock repurchased	[3]	(228)						$ (9)		(219)
Excise tax on common stock repurchased		(1)								(1)
Common stock issued for:
Stock options exercised and restricted stock awards (in shares)								3,135,000
Stock options exercised and restricted stock awards		2						$ 1		1
Stock-based compensation expense		13						$ 1		12
Dividends declared - noncontrolling interest of subsidiary preferred stock		$ (5)															(5)
Preferred stock, balance, ending of period (in shares) at Jun. 30, 2024		16,750	0			16,750,000
Common stock, balance, ending of period (in shares) at Jun. 30, 2024								536,876,000
Balance, ending of period at Jun. 30, 2024		$ 8,955				$ 426		$ 336		$ 5,007		$ 4,172			$ (1,281)	[2]	$ 295
[1] Due to the nature of the preferred stock issued by FHN and its subsidiaries, all components of other comprehensive income (loss) have been attributed solely to FHN as the controlling interest holder. Due to the nature of the preferred stock issued by FHN and its subsidiaries, all components of other comprehensive income (loss) have been attributed solely to FHN as the controlling interest holder.

CONSOLIDATED STATEMENTS OF CH_2

CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (Parenthetical) - USD ($) $ in Millions	3 Months Ended
	Jun. 30, 2024		Mar. 31, 2024		Jun. 30, 2023	Mar. 31, 2023
Common stock - cash dividends declared per share (in dollars per share)	$ 0.15		$ 0.15		$ 0.15	$ 0.15
Common stock repurchased under share repurchase program	$ 228	[1]	$ 159	[1]	$ 5	$ 4
2024 General Purchase Program
Common stock repurchased under share repurchase program	$ 212		$ 154
[1]Includes $154 million and $212 million repurchased during first and second quarter, respectively, under FHN's general purchase program

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Operating Activities
Net income	$ 401	$ 585
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Provision for credit losses	105	100
Deferred income tax expense (benefit)	(26)	1
Depreciation and amortization of premises and equipment	27	28
Amortization of intangible assets	22	24
Net other amortization and accretion	2	9
Net (increase) decrease in trading securities	712	860
Net (increase) decrease in derivatives	4	(298)
Stock-based compensation expense	31	8
Securities (gains) losses, net	(1)	(1)
Loans held for sale:
Purchases and originations	(1,372)	(1,286)
Gross proceeds from settlements and sales	867	527
(Gain) loss due to fair value adjustments and other	(15)	16
Other operating activities, net	(69)	(337)
Total adjustments	287	(349)
Net cash provided by (used in) operating activities	688	236
Investing Activities
Proceeds from maturities of securities available for sale	391	451
Purchases of securities available for sale	(24)	(221)
Proceeds from prepayments of securities held to maturity	28	24
Purchases of premises and equipment	(21)	(14)
Net (increase) decrease in loans and leases	(1,539)	(3,215)
Net (increase) decrease in interest-bearing deposits with banks	(124)	(3,139)
Other investing activities, net	5	8
Net cash provided by (used in) investing activities	(1,284)	(6,106)
Common stock:
Stock options exercised	1	5
Cash dividends paid	(171)	(167)
Repurchase of shares	(387)	(10)
Preferred stock:
Series D preferred stock redemption	(100)	0
Cash dividends paid - preferred stock - noncontrolling interest	(10)	(8)
Cash dividends paid - preferred stock	(16)	(16)
Net increase (decrease) in deposits	(986)	1,944
Net increase (decrease) in short-term borrowings	1,966	4,440
Proceeds from issuance of term borrowings	18	0
Repayment of term borrowing	0	(450)
Increases (decreases) in term borrowings	6	8
Net cash provided by (used in) financing activities	321	5,746
Net increase (decrease) in cash and cash equivalents	(275)	(124)
Cash and cash equivalents at beginning of period	1,731	1,543
Cash and cash equivalents at end of period	1,456	1,419
Supplemental Disclosures
Total interest paid	964	530
Total taxes paid	88	37
Total taxes refunded	4	2
Transfer from loans to OREO	2	3
Transfer from loans HFS to trading securities	552	544
Preferred stock conversion to common stock	$ 0	$ 493

Basis of Presentation and Accou

Basis of Presentation and Accounting Policies	6 Months Ended
	Jun. 30, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation and Accounting Policies	Basis of Presentation and Accounting Policies The accompanying unaudited consolidated financial statements have been prepared in accordance with GAAP for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all information and notes necessary for complete financial statements in accordance with GAAP. In the opinion of management, the accompanying unaudited consolidated financial statements contain all significant adjustments, consisting of normal and recurring items, considered necessary for fair presentation. These interim financial statements should be read in conjunction with FHN's audited consolidated financial statements and notes in FHN's Annual Report on Form 10-K for the year ended December 31, 2023. Operating results for the interim period are not necessarily indicative of the results that may be expected for the full year. All significant intercompany balances and transactions have been eliminated in consolidation. Certain amounts reported in prior years have been reclassified to conform to the current period presentation. See the Glossary of Acronyms and Terms included in this Report for terms used herein. Accounting Changes With Extended Transition Periods In March 2020, the FASB issued ASU 2020-04, “Facilitation of the Effects of Reference Rate Reform on Financial Reporting” which provides several optional expedients and exceptions to ease the potential burden in accounting for (or recognizing the effects of) reference rate reform on financial reporting. The provisions of ASU 2020-04 primarily affect 1) contract modifications (e.g., loans, leases, debt, and derivatives) made in anticipation that a reference rate (e.g., LIBOR) will be discontinued and 2) the application of hedge accounting for existing relationships affected by those modifications. The provisions of ASU 2020-04 were effective upon release and apply only to contracts, hedging relationships, and other transactions that reference LIBOR or another reference rate expected to be discontinued because of reference rate reform. Including the adoption of ASU 2022-06 (discussed below), the expedients and exceptions provided by ASU 2020-04 do not apply to contract modifications made and hedging relationships entered into or evaluated after December 31, 2024, except for hedging relationships existing as of December 31, 2024, that an entity has elected certain optional expedients for and that are retained through the end of the hedging relationship. FHN identified contracts affected by reference rate reform, developed modification plans for those contracts and implemented those modifications before the last quotation of LIBOR on June 30, 2023. FHN elected to utilize the optional expedients and exceptions provided by ASU 2020-04 for contract modifications that immediately converted the reference rate within each contract. FHN also elected that revisions to contractual fallback provisions, including modifications in accordance with the provisions of Regulation ZZ, did not require evaluation for modification accounting. Additionally, FHN elected that the revisions to derivative contracts implemented by central clearinghouses to convert centrally cleared derivative contracts from LIBOR to SOFR plus an appropriate spread adjustment were not considered changes requiring assessment for modification accounting. During the transition period, for cash flow hedges that reference 1-Month USD LIBOR, FHN applied expedients related to 1) the assumption of probability of cash flows when reference rates are changed on hedged items 2) avoiding dedesignation when critical terms (i.e., reference rates) change and 3) the allowed assumption of shared risk exposure for hedged items. Additionally, for its cash flow hedges that reference 1-Month Term SOFR, FHN applied expedients related to 1) the allowed assumption of shared risk exposure for hedged items and 2) multiple allowed assumptions of conformity between hedged items and the hedging instrument when assessing effectiveness. FHN continued to utilize these expedients and exceptions through the final cash flows affected by the quotation of LIBOR. In accordance with the provisions of ASU 2020-04, effective immediately after the end of the transition period for its cash flow hedges (i.e., no more cash flows were affected by LIBOR), FHN elected that the cessation of effectiveness assessments under the transition guidance and subsequent initiation of hedge effectiveness assessments under ASC 815 did not require dedesignation of the hedge relationships. In December 2022, the FASB issued ASU 2022-06, "Deferral of the Sunset Date of Topic 848" which extends the transition window for ASU 2020-04 from December 31, 2022 to December 31, 2024, consistent with key USD LIBOR tenors continuing to be published through June 30, 2023. In January 2021, the FASB issued ASU 2021-01, "Scope" to expand the scope of ASU 2020-04 to apply to certain contract modifications that were implemented in October 2020 by derivative clearinghouses for the use of the Secured Overnight Funding Rate (SOFR) in discounting, margining and price alignment for centrally cleared derivatives, including derivatives utilized in hedging relationships. ASU 2021-01 also applies to derivative contracts affected by the change in discounting convention regardless of whether they are centrally cleared (i.e., bilateral contracts can also be modified) and regardless of whether they reference LIBOR. ASU 2021-01 was effective immediately upon issuance with retroactive application permitted. FHN elected to retroactively apply the provisions of ASU 2021-01 because FHN's centrally cleared derivatives were affected by the change in discounting convention and because FHN has other bilateral derivative contracts that may be modified to conform to the use of SOFR for discounting. Adoption did not have a significant effect on FHN's reported financial condition or results of operations. Summary of Accounting Changes ASU 2023-02 In March 2023, the FASB issued ASU 2023-02, “Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method” which permits investors to elect to account for their tax equity investments, regardless of the tax credit program from which the income tax credits are received, using the proportional amortization method if certain conditions are met. The proportional amortization method results in the cost of the investment being amortized in proportion to the income tax credits and other income tax benefits received, with the amortization of the investment and the income tax credits being presented net in the income statement as a component of income tax provision (benefit). Prior to ASU 2023-02, the proportional amortization method was only available to qualifying low income housing equity investments. An investor is required to make an accounting policy election to apply the proportional amortization method on a tax-credit-program-by-tax-credit-program basis. An investor that applies the proportional amortization method to qualifying tax equity investments must account for the receipt of the investment tax credits using the flow-through method, even if the entity applies the deferral method for other investment tax credits received. ASU 2023-02 also requires specific disclosures that must be applied to all investments that generate income tax credits and other income tax benefits from a tax credit program for which the entity has elected to apply the proportional amortization method. ASU 2023-02 was effective for fiscal years beginning after December 15, 2023, including interim periods within those fiscal years. Adoption of ASU 2023-02 is applied on either a modified retrospective (cumulative catch up) or a retrospective (restatement of prior years) basis. FHN has assessed the applicability of ASU 2023-02 to its tax credit program equity investments, determined that its New Markets Tax Credit and Historic Tax Credit programs qualified, and made the proportional method election for them. The use of the proportional amortization method continued for FHN's Low-Income Housing Tax Credits program. Upon adoption of ASU 2023-02, FHN recognized a cumulative effect adjustment that increased retained earnings by $8 million, net of tax, on January 1, 2024. The adoption of ASU 2023-02 resulted in a revision to FHN’s accounting policy for equity investments in tax credit programs. FHN’s election to utilize the deferral method for investments that generate Investment Tax Credits is now made subsequent to the determination of whether a tax credit program will apply the proportional amortization method. This includes both solar and non-qualifying historic tax credit investments. Under the deferral approach the investment tax credits are recorded as an offset to the related investment on the balance sheet. Credit amounts are recognized in earnings over the life of the investment within the same income or expense accounts as used for the investment. Accounting Changes Issued But Not Currently Effective ASU 2023-07 In November 2023, the FASB issued ASU 2023-07, "Improvements to Reportable Segment Disclosures" that requires public entities to provide disclosures of significant segment expenses and other segment items on an annual and interim basis and to provide in interim periods all disclosures about a reportable segment's profit or loss and assets that are currently required annually. The ASU requires a public entity to disclose, for each reportable segment, the significant expense categories and amounts that are regularly provided to the chief operating decision-maker (CODM) and included in each reported measure of a segment's profit or loss. ASU 2023-07 also requires disclosure of the title and position of the CODM and an explanation of how the CODM uses the reported measure(s) of segment profit or loss in assessing segment performance and deciding how to allocate resources. ASU 2023-07 is effective for fiscal years beginning after December 15, 2023 and for interim periods beginning after December 15, 2024. Early adoption is permitted. The guidance is applied retrospectively to all periods presented in the financial statements, unless it is impracticable. FHN will adopt ASU 2023-07 as of December 31, 2024 and is currently assessing the effect on its reportable segment disclosures. ASU 2023-09 In December 2023, the FASB issued ASU 2023-09, "Improvements to Income Tax Disclosures" to enhance transparency and decision usefulness of income tax disclosures. The provisions of this ASU require disaggregated information about a reporting entity's effective tax rate reconciliation in both percentages and reporting currency amounts. Certain categories of reconciling items are required by the ASU with additional categories required if a specified quantitative threshold is met. Reporting entities are also required to provide a qualitative discussion of the primary state and local jurisdictions for income taxes and the type of reconciling categories. ASU 2023-09 also requires disaggregation of income taxes paid by jurisdiction. For public business entities, ASU 2023-09 is effective for annual periods beginning after December 31, 2024. The guidance will be applied on a prospective basis with the option to apply the standard retrospectively. Early adoption is permitted. FHN is currently assessing the impact of adopting ASU 2023-09 on its income tax disclosures. SEC Final Rule In March 2024, the SEC adopted final rules, “The Enhancement and Standardization of Climate-Related Disclosures for Investors” (the “Climate Disclosures Rules”) to require registrants to disclose certain climate-related information in registration statements and annual reports. Information required for inclusion within the footnotes to the financial statements for severe weather events and other natural conditions includes 1) income statement effects before insurance recoveries above 1% of pre-tax income/loss, 2) balance sheet effects above 1% of shareholders’ equity, and 3) certain carbon offsets and renewable energy credits. Qualitative discussion is also required for material impacts on financial estimates and assumptions that are due to severe weather events and other natural conditions or disclosed climate-related targets or transition plans. In April 2024 the SEC issued a stay of the Climate Disclosures Rules pending the completion of judicial review of various legal challenges. Therefore, the actual timing of the implementation of the Climate Disclosure Rules, if sustained through the judicial process, is uncertain. FHN is assessing the potential effects of the Climate Disclosure Rules on its financial statements.

Investment Securities

Investment Securities	6 Months Ended
	Jun. 30, 2024
Marketable Securities [Abstract]
Investment Securities	Investment Securities The following tables summarize FHN’s investment securities as of June 30, 2024 and December 31, 2023: INVESTMENT SECURITIES AT JUNE 30, 2024 June 30, 2024 (Dollars in millions) Amortized Gross Gross Fair Securities available for sale: Government agency issued MBS $ 4,852 $ 1 $ (622) $ 4,231 Government agency issued CMO 2,374 — (354) 2,020 Other U.S. government agencies 1,282 — (164) 1,118 States and municipalities 608 1 (54) 555 Total securities available for sale (a) $ 9,116 $ 2 $ (1,194) $ 7,924 Securities held to maturity: Government agency issued MBS $ 828 $ — $ (113) $ 715 Government agency issued CMO 469 — (76) 393 Total securities held to maturity (a) $ 1,297 $ — $ (189) $ 1,108 (a) Includes $6.9 billion of securities available for sale and $1.3 billion of securities held to maturity pledged to secure public deposits, securities sold under agreements to repurchase, and for other purposes. INVESTMENT SECURITIES AT DECEMBER 31, 2023 December 31, 2023 (Dollars in millions) Amortized Gross Gross Fair Securities available for sale: Government agency issued MBS $ 5,061 $ 2 $ (579) $ 4,484 Government agency issued CMO 2,487 — (341) 2,146 Other U.S. government agencies 1,321 2 (151) 1,172 States and municipalities 627 3 (41) 589 Total securities available for sale (a) $ 9,496 $ 7 $ (1,112) $ 8,391 Securities held to maturity: Government agency issued MBS $ 852 $ — $ (96) $ 756 Government agency issued CMO 471 — (66) 405 Total securities held to maturity (a) $ 1,323 $ — $ (162) $ 1,161 (a) Includes $7.6 billion of securities available for sale and $1.3 billion of securities held to maturity pledged to secure public deposits, securities sold under agreements to repurchase, and for other purposes. The amortized cost and fair value by contractual maturity for the debt securities portfolio as of June 30, 2024 is provided below: DEBT SECURITIES PORTFOLIO MATURITIES Held to Maturity Available for Sale (Dollars in millions) Amortized Fair Amortized Fair Within 1 year $ — $ — $ 44 $ 44 After 1 year through 5 years — — 137 127 After 5 years through 10 years — — 369 332 After 10 years — — 1,340 1,170 Subtotal — — 1,890 1,673 Government agency issued MBS and CMO (a) 1,297 1,108 7,226 6,251 Total $ 1,297 $ 1,108 $ 9,116 $ 7,924 (a) Expected maturities will differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties. There were no sales of AFS securities for the three and six months ended June 30, 2024 and 2023. The following tables provide information on investments within the available-for-sale portfolio that had unrealized losses as of June 30, 2024 and December 31, 2023: AFS INVESTMENT SECURITIES WITH UNREALIZED LOSSES As of June 30, 2024 Less than 12 months 12 months or longer Total (Dollars in millions) Fair Unrealized Fair Unrealized Fair Unrealized Government agency issued MBS $ 83 $ (1) $ 4,102 $ (621) $ 4,185 $ (622) Government agency issued CMO 28 — 1,992 (354) 2,020 (354) Other U.S. government agencies 104 (1) 971 (164) 1,075 (165) States and municipalities 33 (1) 452 (52) 485 (53) Total $ 248 $ (3) $ 7,517 $ (1,191) $ 7,765 $ (1,194) As of December 31, 2023 Less than 12 months 12 months or longer Total (Dollars in millions) Fair Unrealized Fair Unrealized Fair Unrealized Government agency issued MBS $ 140 $ (2) $ 4,231 $ (577) $ 4,371 $ (579) Government agency issued CMO 32 — 2,098 (341) 2,130 (341) Other U.S. government agencies 114 (2) 905 (149) 1,019 (151) States and municipalities 14 — 465 (41) 479 (41) Total $ 300 $ (4) $ 7,699 $ (1,108) $ 7,999 $ (1,112) FHN has evaluated all AFS debt securities that were in unrealized loss positions in accordance with its accounting policy for recognition of credit losses. No AFS debt securities were determined to have credit losses. Total AIR not included in the fair value or amortized cost basis of AFS debt securities was $31 million and $32 million as of June 30, 2024 and December 31, 2023, respectively. Consistent with FHN's review of the related securities, there were no credit-related write downs of AIR for AFS debt securities during the reporting periods. Additionally, for AFS debt securities with unrealized losses, FHN does not intend to sell them, and it is more likely than not that FHN will not be required to sell them prior to recovery. Therefore, no write downs of these investments to fair value occurred during the reporting periods. There were no transfers to or from AFS or HTM during the three and six month periods ended June 30, 2024 and 2023. For HTM securities, an allowance for credit losses is required to absorb estimated lifetime credit losses. Total AIR not included in the fair value or amortized cost basis of HTM debt securities was $3 million as of both June 30, 2024 and December 31, 2023. FHN has assessed the risk of credit loss and has determined that no allowance for credit losses for HTM securities was necessary as of June 30, 2024 and December 31, 2023. The evaluation of credit risk includes consideration of third-party and government guarantees (both explicit and implicit), senior or subordinated status, credit ratings of the issuer, the effects of interest rate changes since purchase and observable market information such as issuer-specific credit spreads. The carrying amount of equity investments without a readily determinable fair value was $92 million and $89 million at June 30, 2024 and December 31, 2023, respectively. The year-to-date 2024 and 2023 gross amounts of upward and downward valuation adjustments were not significant. Unrealized gains of $2 million and $7 million were recognized in the three and six months ended June 30, 2024, respectively, for equity investments with readily determinable fair values. Unrealized gains of $4 million and $6 million were recognized in the three and six months ended June 30, 2023, respectively, for equity investments with readily determinable fair values.

Loans and Leases

Loans and Leases	6 Months Ended
	Jun. 30, 2024
Receivables [Abstract]
Loans and Leases	Loans and Leases The loans and leases portfolio is disaggregated into portfolio segments and then further disaggregated into classes for certain disclosures. GAAP defines a portfolio segment as the level at which an entity develops and documents a systematic method for determining its allowance for credit losses. A class is generally a disaggregation of a portfolio segment and is generally determined based on risk characteristics of the loan and FHN’s method for monitoring and assessing credit risk and performance. FHN's loan and lease portfolio segments are commercial and consumer. The classes of loans and leases are: (1) commercial, financial, and industrial, which includes commercial and industrial loans and leases and loans to mortgage companies, (2) commercial real estate, (3) consumer real estate, which includes both real estate installment and home equity lines of credit, and (4) credit card and other. The following table provides the amortized cost basis of loans and leases by portfolio segment and class as of June 30, 2024 and December 31, 2023, excluding accrued interest of $294 million and $287 million, respectively, which is included in other assets in the Consolidated Balance Sheets. LOANS AND LEASES BY PORTFOLIO SEGMENT (Dollars in millions) June 30, 2024 December 31, 2023 Commercial: Commercial and industrial (a) (b) $ 30,518 $ 30,609 Loans to mortgage companies 2,934 2,024 Total commercial, financial, and industrial 33,452 32,633 Commercial real estate 14,669 14,216 Consumer: HELOC 2,122 2,219 Real estate installment loans 11,787 11,431 Total consumer real estate 13,909 13,650 Credit card and other (c) 751 793 Loans and leases $ 62,781 $ 61,292 Allowance for loan and lease losses (821) (773) Net loans and leases $ 61,960 $ 60,519 (a) Includes equipment financing leases of $1.3 billion and $1.2 billion for June 30, 2024 and December 31, 2023, respectively. (b) Includes PPP loans fully guaranteed by the SBA of $19 million and $29 million as of June 30, 2024 and December 31, 2023, respectively. (c) Includes $190 million and $180 million of commercial credit card balances as of June 30, 2024 and December 31, 2023, respectively. Restrictions Loans and leases with carrying values of $46.5 billion and $46.1 billion were pledged as collateral for borrowings at June 30, 2024 and December 31, 2023, respectively. Concentrations of Credit Risk Most of FHN’s business activity is with clients located in the southern United States. FHN’s lending activity is concentrated in its market areas within those states. As of June 30, 2024, FHN had loans to mortgage companies of $2.9 billion and loans to finance and insurance companies of $3.8 billion. As a result, 20% of the C&I portfolio is sensitive to impacts on the financial services industry. Credit Quality Indicators FHN employs a dual grade commercial risk grading methodology to assign an estimate for the probability of default and the loss given default for each commercial loan using factors specific to various industry, portfolio, or product segments that result in a rank ordering of risk and the assignment of grades PD 1 to PD 16. This credit grading system is intended to identify and measure the credit quality of the loan and lease portfolio by analyzing the migration between grading categories. It is also integral to the estimation methodology utilized in determining the ALLL since an allowance is established for pools of commercial loans based on the credit grade assigned. Each PD grade corresponds to an estimated one-year default probability percentage. PD grades are continually evaluated but require a formal scorecard annually. PD 1 through PD 12 are “pass” grades. PD grades 13-16 correspond to the regulatory-defined categories of special mention (13), substandard (14), doubtful (15), and loss (16). Special mention loans and leases have potential weaknesses that, if left uncorrected, may result in deterioration of FHN's credit position at some future date. Substandard commercial loans and leases have well-defined weaknesses and are characterized by the distinct possibility that FHN will sustain some loss if the deficiencies are not corrected. Doubtful commercial loans and leases have the same weaknesses as substandard loans and leases with the added characteristics that the probability of loss is high, and collection of the full amount is improbable. The following tables provide the amortized cost basis of the commercial loan portfolio by year of origination and credit quality indicator as of June 30, 2024 and December 31, 2023: C&I PORTFOLIO June 30, 2024 (Dollars in millions) 2024 2023 2022 2021 2020 Prior to 2020 LMC (a) Revolving Revolving Total Credit Quality Indicator: Pass (PD grades 1 through 12) (b) $ 1,623 $ 3,772 $ 5,184 $ 3,139 $ 1,446 $ 4,569 $ 2,934 $ 8,963 $ 278 $ 31,908 Special Mention (PD grade 13) 45 133 71 65 18 149 — 361 28 870 Substandard, Doubtful, or Loss (PD grades 14,15, and 16) 1 48 108 110 25 173 — 188 21 674 Total C&I loans $ 1,669 $ 3,953 $ 5,363 $ 3,314 $ 1,489 $ 4,891 $ 2,934 $ 9,512 $ 327 $ 33,452 December 31, 2023 (Dollars in millions) 2023 2022 2021 2020 2019 Prior to 2019 LMC (a) Revolving Revolving Total Credit Quality Indicator: Pass (PD grades 1 through 12) (b) $ 4,008 $ 5,637 $ 3,506 $ 1,636 $ 1,665 $ 3,448 $ 2,019 $ 9,087 $ 327 $ 31,333 Special Mention (PD grade 13) 75 60 64 56 101 57 — 186 — 599 Substandard, Doubtful, or Loss (PD grades 14,15, and 16) 41 135 94 51 39 100 5 187 49 701 Total C&I loans $ 4,124 $ 5,832 $ 3,664 $ 1,743 $ 1,805 $ 3,605 $ 2,024 $ 9,460 $ 376 $ 32,633 (a) LMC includes non-revolving commercial lines of credit to qualified mortgage companies primarily for the temporary warehousing of eligible mortgage loans prior to the borrower's sale of those mortgage loans to third-party investors. The loans are of short duration with maturities less than one year. (b) Balances include PPP loans. CRE PORTFOLIO June 30, 2024 (Dollars in millions) 2024 2023 2022 2021 2020 Prior to 2020 Revolving Revolving Loans Converted to Term Loans Total Credit Quality Indicator: Pass (PD grades 1 through 12) $ 288 $ 1,046 $ 3,580 $ 3,470 $ 1,071 $ 3,635 $ 356 $ — $ 13,446 Special Mention (PD grade 13) — 1 209 94 31 134 — — 469 Substandard, Doubtful, or Loss (PD grades 14,15, and 16) — 3 67 114 112 452 6 — 754 Total CRE loans $ 288 $ 1,050 $ 3,856 $ 3,678 $ 1,214 $ 4,221 $ 362 $ — $ 14,669 December 31, 2023 (Dollars in millions) 2023 2022 2021 2020 2019 Prior to 2019 Revolving Revolving Loans Converted to Term Loans Total Credit Quality Indicator: Pass (PD grades 1 through 12) $ 853 $ 3,473 $ 3,518 $ 1,162 $ 1,216 $ 2,853 $ 393 $ 18 $ 13,486 Special Mention (PD grade 13) 5 1 129 86 175 82 — — 478 Substandard, Doubtful, or Loss (PD grades 14,15, and 16) — 2 5 11 175 59 — — 252 Total CRE loans $ 858 $ 3,476 $ 3,652 $ 1,259 $ 1,566 $ 2,994 $ 393 $ 18 $ 14,216 The consumer portfolio is comprised primarily of smaller-balance loans which are very similar in nature in that most are standard products and are backed by residential real estate. Because of the similarities of consumer loan types, FHN is able to utilize the FICO score, among other attributes, to assess the credit quality of consumer borrowers. FICO scores are refreshed on a quarterly basis in an attempt to reflect the recent risk profile of the borrowers. Accruing delinquency amounts are indicators of asset quality within the credit card and other consumer portfolio. The following table reflects the amortized cost basis by year of origination and refreshed FICO scores for consumer real estate loans as of June 30, 2024 and December 31, 2023. Within consumer real estate, classes include HELOC and real estate installment loans. HELOCs are loans which during their draw period are classified as revolving loans. Once the draw period ends and the loan enters its repayment period, the loan converts to a term loan and is classified as a revolving loan converted to a term loan. All loans classified in the following tables as revolving loans or revolving loans converted to term loans are HELOCs. Real estate installment loans are originated as fixed term loans and are classified below in their vintage year. All loans in the following tables classified in a vintage year are real estate installment loans. CONSUMER REAL ESTATE PORTFOLIO June 30, 2024 (Dollars in millions) 2024 2023 2022 2021 2020 Prior to 2020 Revolving Revolving Total FICO score 740 or greater $ 557 $ 1,550 $ 2,063 $ 1,657 $ 706 $ 1,670 $ 1,448 $ 45 $ 9,696 FICO score 720-739 80 203 282 223 105 296 192 14 1,395 FICO score 700-719 57 151 223 185 75 264 155 16 1,126 FICO score 660-699 70 166 188 108 79 318 162 17 1,108 FICO score 620-659 5 11 17 23 21 132 34 5 248 FICO score less than 620 6 19 19 19 18 221 24 10 336 Total $ 775 $ 2,100 $ 2,792 $ 2,215 $ 1,004 $ 2,901 $ 2,015 $ 107 $ 13,909 December 31, 2023 (Dollars in millions) 2023 2022 2021 2020 2019 Prior to 2019 Revolving Revolving Loans Converted to Term Loans Total FICO score 740 or greater $ 1,572 $ 2,099 $ 1,720 $ 730 $ 465 $ 1,332 $ 1,522 $ 50 $ 9,490 FICO score 720-739 205 286 227 107 88 230 192 15 1,350 FICO score 700-719 154 232 193 81 52 224 159 17 1,112 FICO score 660-699 170 198 113 83 53 290 168 18 1,093 FICO score 620-659 11 20 23 22 36 106 36 7 261 FICO score less than 620 18 19 15 20 12 225 24 11 344 Total $ 2,130 $ 2,854 $ 2,291 $ 1,043 $ 706 $ 2,407 $ 2,101 $ 118 $ 13,650 The following tables reflect the amortized cost basis by year of origination and refreshed FICO scores for credit card and other loans as of June 30, 2024 and December 31, 2023. CREDIT CARD & OTHER PORTFOLIO June 30, 2024 (Dollars in millions) 2024 2023 2022 2021 2020 Prior to 2020 Revolving Revolving Total FICO score 740 or greater $ 13 $ 34 $ 18 $ 7 $ 3 $ 25 $ 191 $ 7 $ 298 FICO score 720-739 8 5 2 1 1 5 21 1 44 FICO score 700-719 1 4 3 1 1 4 22 1 37 FICO score 660-699 1 3 2 1 — 7 21 — 35 FICO score 620-659 1 1 — — — 2 6 — 10 FICO score less than 620 4 13 8 6 7 109 179 1 327 Total $ 28 $ 60 $ 33 $ 16 $ 12 $ 152 $ 440 $ 10 $ 751 December 31, 2023 (Dollars in millions) 2023 2022 2021 2020 2019 Prior to 2019 Revolving Revolving Loans Converted to Term Loans Total FICO score 740 or greater $ 52 $ 26 $ 10 $ 5 $ 3 $ 27 $ 207 $ 5 $ 335 FICO score 720-739 5 3 1 1 1 5 24 1 41 FICO score 700-719 5 4 1 1 1 4 25 1 42 FICO score 660-699 4 3 1 1 1 8 23 — 41 FICO score 620-659 2 1 1 — — 3 7 — 14 FICO score less than 620 12 9 6 8 13 103 168 1 320 Total $ 80 $ 46 $ 20 $ 16 $ 19 $ 150 $ 454 $ 8 $ 793 Nonaccrual and Past Due Loans and Leases Loans and leases are placed on nonaccrual if it becomes evident that full collection of principal and interest is at risk, impairment has been recognized as a partial charge-off of principal balance due to insufficient collateral value and past due status, or on a case-by-case basis if FHN continues to receive payments but there are other borrower-specific issues. Included in nonaccrual are loans for which FHN continues to receive payments including residential real estate loans where the borrower has been discharged of personal obligation through bankruptcy. Past due loans are loans contractually past due as to interest or principal payments, but which have not yet been put on nonaccrual status. The following table reflects accruing and non-accruing loans and leases by class on June 30, 2024 and December 31, 2023: ACCRUING & NON-ACCRUING LOANS AND LEASES June 30, 2024 Accruing Non-Accruing (Dollars in millions) Current 30-89 90+ Total Current 30-89 90+ Total Total Commercial, financial, and industrial: C&I (a) $ 30,318 $ 32 $ 1 $ 30,351 $ 87 $ 3 $ 77 $ 167 $ 30,518 Loans to mortgage companies 2,934 — — 2,934 — — — — 2,934 Total commercial, financial, and industrial 33,252 32 1 33,285 87 3 77 167 33,452 Commercial real estate: CRE (b) 14,404 4 — 14,408 137 29 95 261 14,669 Consumer real estate: HELOC (c) 2,068 9 3 2,080 29 4 9 42 2,122 Real estate installment loans (d) 11,645 40 — 11,685 38 13 51 102 11,787 Total consumer real estate 13,713 49 3 13,765 67 17 60 144 13,909 Credit card and other: Credit card 276 4 2 282 — — — — 282 Other 465 2 — 467 1 — 1 2 469 Total credit card and other 741 6 2 749 1 — 1 2 751 Total loans and leases $ 62,110 $ 91 $ 6 $ 62,207 $ 292 $ 49 $ 233 $ 574 $ 62,781 December 31, 2023 Accruing Non-Accruing (Dollars in millions) Current 30-89 90+ Total Current 30-89 90+ Total Total Commercial, financial, and industrial: C&I (a) $ 30,398 $ 31 $ 1 $ 30,430 $ 108 $ 18 $ 53 $ 179 $ 30,609 Loans to mortgage companies 2,018 1 — 2,019 5 — — 5 2,024 Total commercial, financial, and industrial 32,416 32 1 32,449 113 18 53 184 32,633 Commercial real estate: CRE (b) 14,072 8 — 14,080 41 — 95 136 14,216 Consumer real estate: HELOC (c) 2,158 11 4 2,173 30 6 10 46 2,219 Real estate installment loans (d) 11,295 29 13 11,337 43 6 45 94 11,431 Total consumer real estate 13,453 40 17 13,510 73 12 55 140 13,650 Credit card and other: Credit card 271 3 3 277 — — — — 277 Other 512 2 — 514 1 — 1 2 516 Total credit card and other 783 5 3 791 1 — 1 2 793 Total loans and leases $ 60,724 $ 85 $ 21 $ 60,830 $ 228 $ 30 $ 204 $ 462 $ 61,292 (a) $158 million and $178 million of C&I loans are nonaccrual loans that have been specifically reviewed for impairment with no related allowance in 2024 and 2023, respectively. (b) $255 million and $129 million of CRE loans are nonaccrual loans that have been specifically reviewed for impairment with no related allowance in 2024 and 2023, respectively. (c) $4 million of HELOC loans are nonaccrual loans that have been specifically reviewed for impairment with no related allowance in both 2024 and 2023. (d) $10 million of real estate installment loans are nonaccrual loans that have been specifically reviewed for impairment with no related allowance in both 2024 and 2023. Collateral-Dependent Loans Collateral-dependent loans are defined as loans for which repayment is expected to be derived substantially through the operation or sale of the collateral and where the borrower is experiencing financial difficulty. At a minimum, the estimated value of the collateral for each loan equals the current book value. As of June 30, 2024 and December 31, 2023, FHN had commercial loans with amortized cost of approximately $310 million and $250 million, respectively, that were based on the value of underlying collateral. Collateral-dependent C&I and CRE loans totaled $121 million and $189 million, respectively, at June 30, 2024. The collateral for these loans generally consists of business assets including land, buildings, equipment, and financial assets. During the three and six months ended June 30, 2024, FHN recognized charge-offs of $19 million and $40 million, respectively, on these loans related to reductions in estimated collateral values. Consumer HELOC and real estate installment loa ns with amortized cost based on the va lue of underlying real estate collateral were approximately $7 million and $27 million, respectively, as of June 30, 2024 and $6 million and $27 million, respectively, as of December 31, 2023. Charge-offs relating to collateral-dependent consumer loans were $1 million for the six months ended June 30, 2024 and June 30, 2023. Loan Modifications to Troubled Borrowers As part of FHN’s ongoing risk management practices, FHN attempts to work with borrowers when necessary to extend or modify loan terms to better align with their current ability to repay. Modifications could include extension of the maturity date, reductions of the interest rate, reduction or forgiveness of accrued interest, or principal forgiveness. Combinations of these modifications may also be made for individual loans. Extensions and modifications to loans are made in accordance with internal policies and guidelines which conform to regulatory guidance. Principal reductions may be made in limited circumstances, typically for specific commercial loan workouts, and in the event of borrower bankruptcy. Each occurrence is unique to the borrower and is evaluated separately. Troubled loans are considered those in which the borrower is experiencing financial difficulty. The assessment of whether a borrower is experiencing financial difficulty can be subjective in nature and management’s judgment may be required in making this determination. FHN may determine that a borrower is experiencing financial difficulty if the borrower is currently in default on any of its debt, or if it is probable that a borrower may default in the foreseeable future absent a modification. Many aspects of a borrower’s financial situation are assessed when determining whether they are experiencing financial difficulty. Troubled commercial loans are typically modified through forbearance agreements which could include reduced interest rates, reduced payments, term extension, or entering into short sale agreements. Principal reductions may occur in specific circumstances. Modifications for troubled consumer loans are generally structured using parameters of U.S. government-sponsored programs. For HELOC and real estate installment loans, troubled loans are typically modified by an interest rate reduction and a possible maturity date extension to reach an affordable housing debt-to-income ratio. Despite the absence of a loan modification by FHN, the discharge of personal liability through bankruptcy proceedings is considered a court-imposed modification. For the credit card portfolio, troubled loan modifications are typically enacted through either a short-term credit card hardship program or a longer-term credit card workout program. In the credit card hardship program, borrowers may be granted rate and payment reductions for six months to one year. In the credit card workout program, borrowers are granted a rate reduction to 0% and a term extension for up to five years. Modifications to Borrowers Experiencing Financial Difficulty The following tables present the amortized cost basis at the end of the reporting period of loans modified to borrowers experiencing financial difficulty, disaggregated by class of financing receivable and type of modification made, as well as the financial effect of the modifications made as of June 30, 2024: LOAN MODIFICATIONS TO BORROWERS EXPERIENCING FINANCIAL DIFFICULTY Interest Rate Reduction June 30, 2024 June 30, 2023 (Dollars in millions) Balance % of Total Class Financial Effect Balance % of Total Class Financial Effect Consumer real estate (a) $ — — % Reduced weighted-average contractual interest rate from 9.87% to 6.52% $ 1 — % Reduced weighted-average contractual interest rate from 8.70% to 3.60% Credit card and other (a) — — Reduced weighted-average contractual interest rate from 5.77% to 4.41% — — Reduced weighted-average contractual interest rate from 14.70% to 0.00% Total $ — — % $ 1 — % (a) Balance less than $1 million. Term Extension June 30, 2024 June 30, 2023 (Dollars in millions) Balance % of Total Class Financial Effect Balance % of Total Class Financial Effect C&I $ 95 0.3 % Added an estimated weighted-average 1.2 years to the life of loans, which reduced monthly payment amounts for the borrowers $ 73 0.2 % Added an estimated weighted-average 1 year to the life of loans, which reduced monthly payment amounts for the borrowers CRE 28 0.2 Added an estimated weighted-average 2.4 years to the life of loans, which reduced monthly payment amounts for the borrowers 46 0.3 Added an estimated weighted-average 1 year to the life of loans, which reduced monthly payment amounts for the borrowers Consumer real estate (a) — — Added a weighted-average 22 years to the life of loans, which reduced monthly payment amounts for the borrowers 1 — Added a weighted-average 13 years to the life of loans, which reduced monthly payment amounts for the borrowers Total $ 123 0.2 % $ 120 0.2 % (a) Balance less than $1 million. Principal Forgiveness June 30, 2024 June 30, 2023 (Dollars in millions) Balance % of Total Class Financial Effect Balance % of Total Class Financial Effect Consumer real estate (a) $ — — % Less than $1 million of the principal of consumer real estate loan was legally discharged in bankruptcy during the period and the borrowers have not re-affirmed the debt as of period end $ 1 — % $1 million of the principal of consumer loans was legally discharged in bankruptcy during the period and the borrowers have not re-affirmed the debt as of period end. Less than $1 million of this principal continues to experience payments in accordance with the original loan terms Total $ — — % $ 1 — % (a) Balance less than $1 million. Payment Deferrals June 30, 2024 June 30, 2023 (Dollars in millions) Balance % of Total Class Financial Effect Balance % of Total Class Financial Effect Consumer real estate $ — — % N/A $ 3 — % Payment deferral for 11 months, with a balloon payment at the end of the term Total $ — — % $ 3 — % Combination - Term Extension and Interest Rate Reduction June 30, 2024 June 30, 2023 (Dollars in millions) Balance % of Total Class Financial Effect Balance % of Total Class Financial Effect Consumer real estate $ 3 — % Added an estimated weighted-average 10.8 years to the life of loans and reduced weighted-average contractual interest rate from 8.39% to 3.67% $ 3 — % Added a weighted-average 13.1 years to the life of loans and reduced weighted-average contractual interest rate from 5.40% to 3.90% Total $ 3 — % $ 3 — % Combination - Principal Forgiveness, Term Extension, and Payment Deferrals June 30, 2024 June 30, 2023 (Dollars in millions) Balance % of Total Class Financial Effect Balance % of Total Class Financial Effect C&I $ — — % N/A $ 16 — % Reduced the balance of the loans by $2 million and added a weighted-average 6.2 years to the life of loans Total $ — — % $ 16 — % Combination - Term Extension, Interest Rate Reduction, and Interest Forgiveness June 30, 2024 June 30, 2023 (Dollars in millions) Balance % of Total Class Financial Effect Balance % of Total Class Financial Effect C&I $ — — % N/A $ 2 — % Added a weighted-average 3.7 years to the life of loans, reduced weighted-average contractual interest rate from 11.30% to 7.50% and provided less than $1 million in interest forgiveness Total $ — — % $ 2 — % Combination - Term Extension, Interest Rate Reduction, and Interest Deferrals June 30, 2024 June 30, 2023 (Dollars in millions) Balance % of Total Class Financial Effect Balance % of Total Class Financial Effect CRE $ — — % N/A $ 17 — % Added a weighted-average 1.0 year to the life of loans, reduced weighted-average contractual interest rate from 8.70% to 8.00% and provided less than $1 million in deferred interest Total $ — — % $ 17 — % Loan modifications to borrowers experiencing financial difficulty that had a payment default during the period and were modified in the 12 months before default totaled $8 million and $25 million for the six months ended June 30, 2024 and June 30, 2023, respectively. FHN closely monitors the performance of the 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 in the last 12 months : PERFORMANCE OF LOANS THAT HAVE BEEN MODIFIED IN THE LAST 12 MONTHS June 30, 2024 (Dollars in millions) Current 30-89 Days Past Due 90+ Days Past Due Non-Accruing C&I $ 110 $ — $ — $ 13 CRE 29 — — — Consumer Real Estate 3 — — 3 Credit Card and Other — — — — Total $ 142 $ — $ — $ 16

Allowance for Credit Losses

Allowance for Credit Losses	6 Months Ended
	Jun. 30, 2024
Accounts, Notes, Loans and Financing Receivable, Gross, Allowance, and Net [Abstract]
Allowance for Credit Losses	Allowance for Credit Losses Management's estimate of expected credit losses in the loan and lease portfolios is recorded in the ALLL and the reserve for unfunded lending commitments, collectively referred to as the Allowance for Credit Losses, or the ACL. The ALLL and the reserve for unfunded lending commitments are reported on the Consolidated Balance Sheets in the allowance for loan and lease losses and in other liabilities, respectively. Provisions for credit losses related to loans and leases and unfunded lending commitments are reported in the Consolidated Statements of Income as provision for credit losses. The ACL is maintained at a level management believes to be appropriate to absorb expected lifetime credit losses over the contractual life of the loan and lease portfolio and unfunded lending commitments. The determination of the ACL is based on periodic evaluation of the loan and lease portfolios and unfunded lending commitments considering a number of relevant underlying factors, including key assumptions and evaluation of quantitative and qualitative information. The expected loan losses are the product of multiplying FHN’s estimates of probability of default (PD), loss given default (LGD), and individual loan level exposure at default (EAD), including amortization and prepayment assumptions, on an undiscounted basis. FHN uses models or assumptions to develop the expected loss forecasts, which incorporate multiple macroeconomic forecasts over a four-year reasonable and supportable forecast period. After the reasonable and supportable forecast period, the Company immediately reverts to its historical loss averages, evaluated over the historical observation period, for the remaining estimated life of the loans. In order to capture the unique risks of the loan portfolio within the PD, LGD, and prepayment models, FHN segments the portfolio into pools, generally incorporating loan grades for commercial loans. As there can be no certainty that actual economic performance will precisely follow any specific macroeconomic forecast, FHN uses qualitative adjustments where current loan characteristics or current or forecasted economic conditions differ from historical periods. The evaluation of quantitative and qualitative information is performed through assessments of groups of assets that share similar risk characteristics and certain individual loans and leases that do not share similar risk characteristics with the collective group. As described in Note 3 - Loans and Leases, loans are grouped generally by product type and significant loan portfolios are assessed for credit losses using analytical or statistical models. The quantitative component utilizes economic forecast information as its foundation and is primarily based on analytical models that use known or estimated data as of the balance sheet date and forecasted data over the reasonable and supportable period. The ACL is also affected by qualitative factors that FHN considers to reflect current judgment of various events and risks that are not measured in the quantitative calculations, including alternative economic forecasts. In accordance with its accounting policy elections, FHN does not recognize a separate allowance for expected credit losses for AIR and records reversals of AIR as reductions of interest income. FHN reverses previously accrued but uncollected interest when an asset is placed on nonaccrual status. AIR and the related allowance for expected credit losses is included as a component of other assets. The total amount of interest reversals from loans placed on nonaccrual status and the amount of income recognized on nonaccrual loans during the three and six months ended June 30, 2024 and 2023 were not material. Expected credit losses for unfunded commitments are estimated for periods where the commitment is not unconditionally cancellable. The measurement of expected credit losses for unfunded commitments mirrors that of loans and leases with the additional estimate of future draw rates (timing and amount). The increase in the ACL balance as of June 30, 2024, as compared to December 31, 2023, largely reflects downgrades, net commercial loan balance increases, and an evolving macroeconomic outlook. In developing credit loss estimates for its loan and lease portfolios, FHN utilized two Moody’s forecast scenarios for its macroeconomic inputs. As of June 30, 2024, among other things, FHN's scenario selection process factored in the outlook for production, inflation, interest rates, employment, real estate prices and international conflict. FHN selected one scenario as its base case, which was the Moody's baseline scenario. The heaviest weight was placed on this scenario. A smaller weight was placed on the FHN-selected downside scenario which was the Moody's S3 alternative scenario. FHN's scenario selection process was consistent with the prior quarter. Management also made qualitative adjustments to reflect estimated recoveries based on a review of prior charge-off and recovery levels, for default risk associated with large balances with individual borrowers, for estimated loss amounts not reflected in historical factors due to specific portfolio risk, and for instances where limited data for acquired loans is considered to affect modeled results. The following table provides a rollforward of the ALLL and the reserve for unfunded lending commitments by portfolio type for the three and six months ended June 30, 2024 and 2023: ROLLFORWARD OF ALLL & RESERVE FOR UNFUNDED LENDING COMMITMENTS (Dollars in millions) Commercial, Financial, and Industrial (a) Commercial Real Estate Consumer Real Estate Credit Card and Other Total Three Months Ended June 30, 2024 Allowance for loan and lease losses: Balance as of April 1, 2024 $ 348 $ 181 $ 231 $ 27 $ 787 Charge-offs (24) (19) (1) (5) (49) Recoveries 12 — 2 1 15 Provision for loan and lease losses 8 59 (1) 2 68 Balance as of June 30, 2024 $ 344 $ 221 $ 231 $ 25 $ 821 Reserve for remaining unfunded commitments: Balance as of April 1, 2024 $ 49 $ 18 $ 12 $ — $ 79 Provision for remaining unfunded commitments (5) (8) — — (13) Balance as of June 30, 2024 44 10 12 — 66 Allowance for credit losses as of June 30, 2024 $ 388 $ 231 $ 243 $ 25 $ 887 Three Months Ended June 30, 2023 Allowance for loan and lease losses: Balance as of April 1, 2023 $ 325 $ 150 $ 209 $ 31 $ 715 Charge-offs (19) (8) (1) (5) (33) Recoveries 5 1 3 1 10 Provision for loan and lease losses 15 16 10 4 45 Balance as of June 30, 2023 $ 326 $ 159 $ 221 $ 31 $ 737 Reserve for remaining unfunded commitments: Balance as of April 1, 2023 $ 53 $ 21 $ 11 $ — $ 85 Provision for remaining unfunded commitments 2 3 — — 5 Balance as of June 30, 2023 55 24 11 — 90 Allowance for credit losses as of June 30, 2023 $ 381 $ 183 $ 232 $ 31 $ 827 (Dollars in millions) Commercial, Financial, and Industrial (a) Commercial Real Estate Consumer Real Estate Credit Card and Other Total Six Months Ended June 30, 2024 Allowance for loan and lease losses: Balance as of January 1, 2024 $ 339 $ 172 $ 233 $ 29 $ 773 Charge-offs (52) (32) (1) (10) (95) Recoveries 14 — 4 3 21 Provision for loan and lease losses 43 81 (5) 3 122 Balance as of June 30, 2024 $ 344 $ 221 $ 231 $ 25 $ 821 Reserve for remaining unfunded commitments: Balance as of January 1, 2024 $ 49 $ 22 $ 12 $ — $ 83 Provision for remaining unfunded commitments (5) (12) — — (17) Balance as of June 30, 2024 44 10 12 — 66 Allowance for credit losses as of June 30, 2024 $ 388 $ 231 $ 243 $ 25 $ 887 Six Months Ended June 30, 2023 Allowance for loan and lease losses: Balance as of January 1, 2023 $ 308 $ 146 $ 200 $ 31 $ 685 Adoption of ASU 2022-02 1 — (7) — (6) Charge-offs (33) (10) (1) (10) (54) Recoveries 7 1 5 2 15 Provision for loan and lease losses 43 22 24 8 97 Balance as of June 30, 2023 $ 326 $ 159 $ 221 $ 31 $ 737 Reserve for remaining unfunded commitments: Balance as of January 1, 2023 $ 55 $ 22 $ 10 $ — $ 87 Provision for remaining unfunded commitments — 2 1 — 3 Balance as of June 30, 2023 55 24 11 — 90 Allowance for credit losses as of June 30, 2023 $ 381 $ 183 $ 232 $ 31 $ 827 (a) C&I loans as of June 30, 2024 and 2023 include $19 million and $44 million in PPP loans, respectively, which due to the government guarantee and forgiveness provisions are considered to have no credit risk and therefore have no allowance for loan and lease losses. The following table presents gross charge-offs by year of origination for the six months ended June 30, 2024 and 2023: GROSS CHARGE-OFFS (Dollars in millions) 2024 2023 2022 2021 2020 Prior to 2020 Revolving Loans Total C&I $ — $ 9 $ 11 $ 20 $ 1 $ 9 $ 2 $ 52 CRE — — — — 9 23 — 32 Consumer Real Estate — — — — — 1 — 1 Credit Card and Other 4 — 1 — — 1 4 10 Total $ 4 $ 9 $ 12 $ 20 $ 10 $ 34 $ 6 $ 95 2023 2022 2021 2020 2019 Prior to 2019 Revolving Loans Total C&I $ 1 $ 5 $ 6 $ 4 $ 6 $ 10 $ 1 $ 33 CRE — — — — 2 8 — 10 Consumer Real Estate — — — — — 1 — 1 Credit Card and Other 6 — — — — 1 3 10 Total $ 7 $ 5 $ 6 $ 4 $ 8 $ 20 $ 4 $ 54

Mortgage Banking Activity

Mortgage Banking Activity	6 Months Ended
	Jun. 30, 2024
Mortgage Banking [Abstract]
Mortgage Banking Activity	Mortgage Banking Activity FHN originates mortgage loans for sale into the secondary market. These loans primarily consist of residential first lien mortgages that conform to standards established by GSEs that are major investors in U.S. home mortgages, but can also consist of junior lien and jumbo loans secured by residential property. These loans are primarily sold to private companies that are unaffiliated with the GSEs on a servicing-released basis. Gains and losses on these mortgage loans are included in mortgage banking income on the Consolidated Statements of Income. At June 30, 2024, FHN had approximately $32 million of loans that remained from pre-2009 mortgage business operations of legacy First Horizon. Activity related to the pre-2009 mortgage loans was primarily limited to payments and write-offs in 2024 and 2023, with no new originations or loan sales, and only an insignificant amount of repurchases. These loans are excluded from the disclosure below. The following table summarizes activity related to residential mortgage loans held for sale as of and for the six months ended June 30, 2024 and the year ended December 31, 2023. MORTGAGE LOAN ACTIVITY (Dollars in millions) June 30, 2024 December 31, 2023 Balance at beginning of period $ 62 $ 44 Originations and purchases 485 692 Sales, net of gains (436) (674) Balance at end of period $ 111 $ 62 Mortgage Servicing Rights FHN records mortgage servicing rights at the lower of cost or market value and amortizes them over the remaining servicing life of the loans, with consideration given to prepayment assumptions. Mortgage servicing rights are included in other assets on the Consolidated Balance Sheets. Mortgage servicing rights had the following carrying values as of the dates indicated in the table below. MORTGAGE SERVICING RIGHTS June 30, 2024 December 31, 2023 (Dollars in millions) Gross Carrying Amount Accumulated Amortization Net Carrying Amount Gross Carrying Amount Accumulated Amortization Net Carrying Amount Mortgage servicing rights $ 28 $ (8) $ 20 $ 25 $ (7) $ 18 In addition, there was an insignificant amount of non-mortgage and commercial servicing rights as of June 30, 2024 and December 31, 2023. Total mortgage servicing fees included in mortgage banking income were $2 million for the six months ended June 30, 2024 and 2023.

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	6 Months Ended
	Jun. 30, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangible Assets	Goodwill and Other Intangible Assets Goodwill The following is a summary of goodwill by reportable segment included in the Consolidated Balance Sheets as of June 30, 2024 and December 31, 2023. GOODWILL (Dollars in millions) Regional Specialty Banking Total December 31, 2022 (a) $ 825 $ 686 $ 1,511 Additions — — — Divestitures (b) — (1) (1) December 31, 2023 $ 825 $ 685 $ 1,510 Additions — — — Divestitures — — — June 30, 2024 $ 825 $ 685 $ 1,510 (a) FHN reorganized its internal management structure and reallocated goodwill in its reportable segments effective January 1, 2024. Prior periods have been revised to reflect this reallocation. (b) Reduction in goodwill is related to the divestiture of FHN Financial Main Street Advisors assets in December 2023. FHN performed the required annual goodwill impairment test as of October 1, 2023. The annual qualitative impairment test did not indicate impairment in any of FHN’s reporting units as of the testing date. Following the testing date, management evaluated the events and circumstances that could indicate that goodwill might be impaired and concluded that it is not more likely than not that goodwill was impaired. If there are any triggering events between annual periods, management will evaluate whether an impairment analysis is warranted. FHN will conduct its next annual impairment analysis as of October 1, 2024. Accounting estimates and assumptions were made about FHN's future performance and cash flows, as well as other prevailing market factors (e.g., interest rates, economic trends, etc.) when determining fair value as part of the goodwill impairment test. While management used the best information available to estimate future performance for each reporting unit, future adjustments to management's projections may be necessary if conditions differ substantially from the assumptions used in making the estimates. Other intangible assets The following table, which excludes fully amortized intangibles, presents other intangible assets included in the Consolidated Balance Sheets: OTHER INTANGIBLE ASSETS June 30, 2024 December 31, 2023 (Dollars in millions) Gross Carrying Accumulated Net Carrying Gross Carrying Accumulated Net Carrying Core deposit intangibles $ 368 $ (227) $ 141 $ 368 $ (208) $ 160 Client relationships 32 (17) 15 32 (16) 16 Other (a) 27 (18) 9 27 (17) 10 Total $ 427 $ (262) $ 165 $ 427 $ (241) $ 186 (a) Includes non-compete covenants and purchased credit card intangible assets. Also includes state banking licenses which are not subject to amortization.

Preferred Stock

Preferred Stock	6 Months Ended
	Jun. 30, 2024
Equity [Abstract]
Preferred Stock	Preferred Stock The following table presents a summary of FHN's non-cumulative perpetual preferred stock: PREFERRED STOCK (Dollars in millions) June 30, 2024 December 31, 2023 Issuance Date Earliest Redemption Date (a) Annual Dividend Rate Dividend Payments Shares Outstanding Liquidation Amount Carrying Amount Carrying Amount Series B 7/2/2020 8/1/2025 6.625% (b) Semi-annually 8,000 $ 80 $ 77 $ 77 Series C 7/2/2020 5/1/2026 6.600% (c) Quarterly 5,750 58 59 59 Series D 7/2/2020 5/1/2024 6.100% (d) Semi-annually — — — 94 Series E 5/28/2020 10/10/2025 6.500% Quarterly 1,500 150 145 145 Series F 5/3/2021 7/10/2026 4.700% Quarterly 1,500 150 145 145 16,750 $ 438 $ 426 $ 520 (a) Denotes earliest optional redemption date. Earlier redemption is possible, at FHN's election, if certain regulatory capital events occur. (b) As a result of LIBOR transition, the fixed dividend rate will reset on August 1, 2025 to three-month CME Term SOFR plus 4.52361% (0.26161% plus 4.262%). (c) As a result of LIBOR transition, the fixed dividend rate will reset on May 1, 2026 to three-month CME Term SOFR plus 5.18161% (0.26161% plus 4.920%). (d) On May 1, 2024, FHN redeemed all outstanding shares of its Series D Preferred Stock. The fixed dividend rate was set to convert to three-month CME Term SOFR plus 4.12061% (0.26161% plus 3.859%) on May 1, 2024. FHN redeemed all outstanding shares of Series D Preferred Stock effective May 1, 2024. The difference between the $100 million outstanding liquidation preference amount and the $94 million carrying value of the Series D Preferred Stock along with the related share repurchase tax resulted in $7 million in deemed dividends that were included in net income available to common shareholders and EPS for the three and six months ended June 30, 2024. The Series D redemption date was also a dividend payment date, and the regular Series D semi-annual dividend declared in first quarter 2024 was paid separately in the customary manner on May 1, 2024 to shareholders of record at the close of business on April 16, 2024. Subsidiary Preferred Stock First Horizon Bank has issued 300,000 shares of Class A Non-Cumulative Perpetual Preferred Stock (Class A Preferred Stock) with a liquidation preference of $1,000 per share. Dividends on the Class A Preferred Stock, if declared, accrue and are payable each quarter, in arrears, at a floating rate equal to the greater of three-month CME Term SOFR plus 1.11161% (0.26161% plus 0.85%) or 3.75% per annum. These securities qualify fully as Tier 1 capital for both First Horizon Bank and FHN. On June 30, 2024 and December 31, 2023, $295 million of Class A Preferred Stock was recognized as noncontrolling interest on the Consolidated Balance Sheets. FT Real Estate Securities Company, Inc. (FTRESC), an indirect subsidiary of FHN, has issued 50 shares of 9.50% Cumulative Preferred Stock, Class B (Class B Preferred Shares), with a liquidation preference of $1 million per share; of those shares, 47 were issued to nonaffiliates. FTRESC is a real estate investment trust established for the purpose of acquiring, holding, and managing real estate mortgage assets. Dividends on the Class B Preferred Shares are cumulative and are payable semi-annually. At June 30, 2024 and December 31, 2023, the Class B Preferred Shares qualified as Tier 2 regulatory capital. For all periods presented, these securities are presented in the Consolidated Balance Sheets as term borrowings. The Class B Preferred Shares are mandatorily redeemable on March 31, 2031, and redeemable at the discretion of FTRESC in the event that the Class B Preferred Shares cannot be accounted for as Tier 2 regulatory capital or there is more than an insubstantial risk that dividends paid with respect to the Class B Preferred Shares will not be fully deductible for tax purposes.

Components of Other Comprehensi

Components of Other Comprehensive Income (Loss)	6 Months Ended
	Jun. 30, 2024
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Components of Other Comprehensive Income (Loss)	Components of Other Comprehensive Income (Loss) The following table provides the changes in accumulated other comprehensive income (loss) by component, net of tax, for the three and six months ended June 30, 2024 and 2023: ACCUMULATED OTHER COMPREHENSIVE INCOME (Dollars in millions) Securities AFS Cash Flow Hedges Pension and Total Balance as of April 1, 2024 $ (891) $ (110) $ (270) $ (1,271) Net unrealized gains (losses) (10) (15) — (25) Amounts reclassified from AOCI — 13 2 15 Other comprehensive income (loss) (10) (2) 2 (10) Balance as of June 30, 2024 $ (901) $ (112) $ (268) $ (1,281) (Dollars in millions) Securities AFS Cash Flow Hedges Pension and Total Balance as of January 1, 2024 $ (836) $ (80) $ (272) $ (1,188) Net unrealized gains (losses) (65) (58) — (123) Amounts reclassified from AOCI — 26 4 30 Other comprehensive income (loss) (65) (32) 4 (93) Balance as of June 30, 2024 $ (901) $ (112) $ (268) $ (1,281) (Dollars in millions) Securities AFS Cash Flow Hedges Pension and Total Balance as of April 1, 2023 $ (859) $ (83) $ (266) $ (1,208) Net unrealized gains (losses) (105) (59) (2) (166) Amounts reclassified from AOCI — 13 2 15 Other comprehensive income (loss) (105) (46) — (151) Balance as of June 30, 2023 $ (964) $ (129) $ (266) $ (1,359) (Dollars in millions) Securities AFS Cash Flow Hedges Pension and Total Balance as of January 1, 2023 $ (973) $ (127) $ (268) $ (1,368) Net unrealized gains (losses) 9 (26) (2) (19) Amounts reclassified from AOCI — 24 4 28 Other comprehensive income (loss) 9 (2) 2 9 Balance as of June 30, 2023 $ (964) $ (129) $ (266) $ (1,359) Reclassifications from AOCI, and related tax effects, were as follows: RECLASSIFICATIONS FROM AOCI (Dollars in millions) Three Months Ended Six Months Ended Details about AOCI 2024 2023 2024 2023 Affected line item in the statement where net Cash Flow Hedges: Realized (gains) losses on cash flow hedges $ 17 $ 17 $ 34 $ 32 Interest and fees on loans and leases Tax expense (benefit) (4) (4) (8) (8) Income tax expense 13 13 26 24 Pension and Postretirement Plans: Amortization of prior service cost and net actuarial (gain) loss $ 3 $ 2 $ 6 $ 5 Other expense Tax expense (benefit) (1) — (2) (1) Income tax expense 2 2 4 4 Total reclassification from AOCI $ 15 $ 15 $ 30 $ 28

Earnings Per Share

Earnings Per Share	6 Months Ended
	Jun. 30, 2024
Earnings Per Share [Abstract]
Earnings Per Share	Earnings Per Share The computations of basic and diluted earnings per common share were as follows: EARNINGS PER SHARE COMPUTATIONS Three Months Ended Six Months Ended (Dollars in millions, except per share data; shares in thousands) 2024 2023 2024 2023 Net income $ 204 $ 329 $ 401 $ 585 Net income attributable to noncontrolling interest 5 4 10 9 Net income attributable to controlling interest 199 325 391 576 Preferred stock dividends 15 8 23 16 Net income available to common shareholders $ 184 $ 317 $ 368 $ 560 Weighted average common shares outstanding—basic 543,981 539,120 549,479 538,035 Effect of dilutive restricted stock, performance equity awards and options 3,112 3,100 3,060 4,956 Effect of dilutive convertible preferred stock (a) — 18,658 — 19,197 Weighted average common shares outstanding—diluted 547,093 560,878 552,539 562,188 Basic earnings per common share $ 0.34 $ 0.59 $ 0.67 $ 1.04 Diluted earnings per common share $ 0.34 $ 0.56 $ 0.67 $ 1.00 (a) On February 28, 2022, FHN issued $494 million of Series G Convertible Preferred Stock, which was converted into common stock on June 26, 2023, following the termination of the TD Merger Agreement. Conversion occurred at the rate of 4,000 common shares per Series G preferred share resulting in 19,742,776 additional common shares outstanding. 2023 includes the impact of the Series G preferred shares based on the final conversion rate. The following table presents average outstanding options and other equity awards that were excluded from the calculation of diluted earnings per share because they were either anti-dilutive (the exercise price was higher than the weighted-average market price for the period) or the performance conditions have not been met: ANTI-DILUTIVE EQUITY AWARDS Three Months Ended Six Months Ended (Shares in thousands) 2024 2023 2024 2023 Stock options excluded from the calculation of diluted EPS 1,388 1,942 1,458 — Weighted average exercise price of stock options excluded from the calculation of diluted EPS $ 16.48 $ 16.46 $ 16.59 $ 24.36 Other equity awards excluded from the calculation of diluted EPS 6,828 8,676 6,819 3,063

Contingencies and Other Disclos

Contingencies and Other Disclosures	6 Months Ended
	Jun. 30, 2024
Commitments and Contingencies Disclosure [Abstract]
Contingencies and Other Disclosures	Contingencies and Other Disclosures Contingencies Contingent Liabilities Overview Contingent liabilities arise in the ordinary course of business. Often, they are related to lawsuits, arbitration, mediation, and other forms of litigation. Various litigation matters currently are threatened or pending against FHN and its subsidiaries. Also, FHN at times receives requests for information, subpoenas, or other inquiries from federal, state, and local regulators, from other government authorities, and from other parties concerning various matters relating to FHN’s current or former businesses. Certain matters of that sort are pending at most times, and FHN generally cooperates when those matters arise. Pending and threatened litigation matters sometimes are settled by the parties, and sometimes pending matters are resolved in court or before an arbitrator, or are withdrawn. Regardless of the manner of resolution, frequently the most significant changes in status of a matter occur over a short time period, often following a lengthy period of little substantive activity. In view of the inherent difficulty of predicting the outcome of these matters, particularly where the claimants seek very large or indeterminate damages, or where the cases present novel legal theories or involve a large number of parties, or where claims or other actions may be possible but have not been brought, FHN cannot reasonably determine what the eventual outcome of the matters will be, what the timing of the ultimate resolution of these matters may be, or what the eventual loss or impact related to each matter may be. FHN establishes a loss contingency liability for a litigation matter when loss is both probable and reasonably estimable as prescribed by applicable financial accounting guidance. If loss for a matter is probable and a range of possible loss outcomes is the best estimate available, accounting guidance requires a liability to be established at the low end of the range. Based on current knowledge, and after consultation with counsel, management is of the opinion that loss contingencies related to threatened or pending litigation matters should not have a material adverse effect on the consolidated financial condition of FHN but may be material to FHN’s operating results for any particular reporting period depending, in part, on the results from that period. Material Loss Contingency Matters As used in this Note, except for matters that are reported as having been substantially settled or otherwise substantially resolved, FHN's “material loss contingency matters” generally fall into at least one of the following categories: (i) FHN has determined material loss to be probable and has established a material loss liability in accordance with applicable financial accounting guidance; (ii) FHN has determined material loss to be probable but is not reasonably able to estimate an amount or range of material loss liability; or (iii) FHN has determined that material loss is not probable but is reasonably possible, and the amount or range of that reasonably possible material loss is estimable. As defined in applicable accounting guidance, loss is reasonably possible if there is more than a remote chance of a material loss outcome for FHN. FHN provides contingencies note disclosures for certain pending or threatened litigation matters each quarter, including all matters mentioned in categories (i) or (ii) and, occasionally, certain matters mentioned in category (iii). In addition, in this Note, certain other matters, or groups of matters, are discussed relating to FHN’s pre-2009 mortgage origination and servicing businesses. In all litigation matters discussed in this Note, unless settled or otherwise resolved, FHN believes it has meritorious defenses and intends to pursue those defenses vigorously. FHN reassesses the liability for litigation matters each quarter as the matters progress. At June 30, 2024, the aggregate amount of liabilities established for all such loss contingency matters was $1 million. These liabilities are separate from those discussed under the heading Mortgage Loan Repurchase and Foreclosure Liability below. In each material loss contingency matter, except as otherwise noted, there is more than a remote chance that any of the following outcomes will occur: the plaintiff will substantially prevail; the defense will substantially prevail; the plaintiff will prevail in part; or the matter will be settled by the parties. At June 30, 2024, FHN estimates that for all material loss contingency matters, estimable reasonably possible losses in future periods in excess of currently established liabilities could aggregate in a range from zero to less than $1 million. As a result of the general uncertainties discussed above and the specific uncertainties discussed for each matter mentioned below, it is possible that the ultimate future loss experienced by FHN for any particular matter may materially exceed the amount, if any, of currently established liability for that matter. Mortgage Loan Repurchase and Foreclosure Liability FHN’s repurchase and foreclosure liability, primarily related to its pre-2009 mortgage origination, sale, securitization, and servicing businesses, is comprised of accruals to cover estimated loss content in the active pipeline, estimated future inflows, and estimated loss content related to certain known claims not currently included in the active pipeline. The active pipeline consists of mortgage loan repurchase and make-whole demands from loan purchasers or securitization participants, foreclosure/servicing demands from borrowers, and certain related exposures. FHN compares the estimated probable incurred losses determined under the applicable loss estimation approaches for the respective periods with current reserve levels. Changes in the estimated required liability levels are recorded as necessary through the repurchase and foreclosure provision. Based on currently available information and experience to date, FHN has evaluated its loan repurchase, make-whole, foreclosure, and certain related exposures and has accrued for losses of $16 million as of both June 30, 2024 and December 31, 2023. Accrued liabilities for FHN’s estimate of these obligations are reflected in other liabilities on the Consolidated Balance Sheets. Charges/expense reversals to increase/decrease the liability are included within other income on the Consolidated Statements of Income. The estimates are based upon currently available information and fact patterns that exist as of each balance sheet date and could be subject to future changes. Changes to any one of these factors could significantly impact the estimate of FHN’s liability. The most significant outstanding claim associated with FHN's pre-2009 businesses is a servicing indemnification claim asserted by Nationstar Mortgage LLC, currently doing business as “Mr. Cooper.” Nationstar was the purchaser of FHN’s mortgage servicing obligations and assets in 2013 and 2014 and was FHN’s subservicer. Nationstar asserts several categories of indemnity obligations in connection with mortgage loans under the subservicing arrangement and under the purchase transaction. This matter currently is not in litigation, but litigation in the future is possible. FHN is unable to estimate an RPL range for this matter due to significant uncertainties regarding: the exact nature of each of Nationstar’s claims and its position in respect of each; the number of, and the facts underlying, the claimed instances of indemnifiable events; the applicability of FHN’s contractual indemnity covenants to those facts and events; and, in those cases where the facts and events might support an indemnity claim, whether any legal defenses, counterclaims, other counter-positions, or third-party claims might eliminate or reduce claims against FHN or their impact on FHN. Other Disclosures Indemnification Agreements and Guarantees In the ordinary course of business, FHN enters into indemnification agreements for legal proceedings against its directors and officers and standard representations and warranties for underwriting agreements, merger and acquisition agreements, loan sales, contractual commitments, and various other business transactions or arrangements. The extent of FHN’s obligations under these agreements depends upon the occurrence of future events; therefore, it is not possible to estimate a maximum potential amount of payouts that could be required by such agreements.

Retirement Plans

Retirement Plans	6 Months Ended
	Jun. 30, 2024
Retirement Benefits, Description [Abstract]
Retirement Plans	Retirement Plans FHN sponsors a noncontributory, qualified defined benefit pension plan to employees hired or re-hired on or before September 1, 2007. Pension benefits are based on years of service, average compensation near retirement or other termination, and estimated social security benefits at age 65. Benefits under the plan are “frozen” so that years of service and compensation changes after 2012 do not affect the benefit owed. Minimum contributions are based upon actuarially determined amounts necessary to fund the total benefit obligation. Decisions to contribute to the plan are based upon pension funding requirements under the Pension Protection Act, the maximum amount deductible under the Internal Revenue Code, the actual performance of plan assets, and trends in the regulatory environment. FHN made no contributions to the qualified pension plan in 2023. Management does not currently anticipate that FHN will make a contribution to the qualified pension plan in 2024. FHN also maintains non-qualified plans including a supplemental retirement plan that covers certain employees whose benefits under the qualified pension plan have been limited by tax rules. These other non-qualified plans are unfunded, and contributions to these plans cover all benefits paid under the non-qualified plans. Payments made under the non-qualified plans were $6 million for 2023. FHN anticipates making benefit payments under the non-qualified plans of $5 million in 2024. Service cost is included in personnel expense in the Consolidated Statements of Income. All other components of net periodic benefit cost are included in other expense. For more information on FHN's pension plan and other postretirement benefit plans, see Note 17 - Retirement Plans and Other Employee Benefits in FHN's 2023 Annual Report on Form 10-K. The components of net periodic benefit cost for the three and six months ended June 30 were as follows: COMPONENTS OF NET PERIODIC BENEFIT COST Three Months Ended June 30, Six Months Ended June 30, (Dollars in millions) 2024 2023 2024 2023 Components of net periodic benefit cost Interest cost $ 9 $ 8 $ 17 $ 16 Expected return on plan assets (8) (8) (16) (16) Amortization of unrecognized: Actuarial (gain) loss 3 3 6 6 Net periodic benefit cost $ 4 $ 3 $ 7 $ 6

Business Segment Information

Business Segment Information	6 Months Ended
	Jun. 30, 2024
Segment Reporting [Abstract]
Business Segment Information	Business Segment Information FHN's operating segments are composed of the following: • Regional Banking segment offers financial products and services, including traditional lending and deposit taking, to commercial and consumer clients primarily in the southern U.S. and other selected markets. Regional Banking also provides investment, wealth management, financial planning, trust and asset management services for consumer clients. • Specialty Banking segment consists of lines of business that deliver product offerings and services with specialized industry knowledge. Specialty Banking’s lines of business include asset-based lending, mortgage warehouse lending, commercial real estate, franchise finance, correspondent banking, equipment finance, and mortgage. In addition to traditional lending and deposit taking, Specialty Banking also delivers treasury management solutions, loan syndications, and international banking. Additionally, Specialty Banking has a line of business focused on fixed income securities sales, trading, underwriting, and strategies for institutional clients in the U.S. and abroad, as well as loan sales, portfolio advisory services, and derivative sales. • Corporate segment consists primarily of corporate support functions including risk management, audit, accounting, finance, executive office, and corporate communications. Shared support services such as human resources, properties, technology, credit risk and bank operations are allocated to the activities of Regional Banking, Specialty Banking and Corporate. Additionally, the Corporate segment includes centralized management of capital and funding to support the business activities of the company including management of wholesale funding, liquidity, and capital management and allocation. The Corporate segment also includes the revenue and expense associated with run-off businesses such as pre-2009 mortgage banking elements, run-off consumer and trust preferred loan portfolios, and other exited businesses. Periodically, FHN adapts its segments to reflect managerial or strategic changes. FHN may also modify its methodology of allocating expenses and equity among segments which could change historical segment results. During the first quarter of 2024, FHN made organizational changes in its internal management structure, and accordingly, its segment reporting structure. Prior period segment information has been reclassified to conform to the current period presentation. Business segment revenue, expense, asset, and equity levels reflect those which are specifically identifiable, or which are allocated based on an internal allocation method. Because the allocations are based on internally developed assignments and allocations, to an extent they are subjective. Generally, all assignments and allocations have been consistently applied for all periods presented. The following tables present financial information for each reportable business segment for the three and six months ended June 30, 2024 and 2023: SEGMENT FINANCIAL INFORMATION Three Months Ended June 30, 2024 (Dollars in millions) Regional Banking Specialty Banking Corporate Consolidated Net interest income (expense) $ 522 $ 158 $ (51) $ 629 Provision for credit losses 57 1 (3) 55 Noninterest income 109 64 13 186 Noninterest expense (a) 333 103 64 500 Income (loss) before income taxes 241 118 (99) 260 Income tax expense (benefit) 56 29 (29) 56 Net income (loss) $ 185 $ 89 $ (70) $ 204 Average assets $ 43,519 $ 24,592 $ 13,610 $ 81,721 Three Months Ended June 30, 2023 (Dollars in millions) Regional Banking Specialty Banking Corporate Consolidated Net interest income (expense) $ 585 $ 156 $ (111) $ 630 Provision for credit losses 36 18 (4) 50 Noninterest income (b) 106 50 244 400 Noninterest expense (a) 313 95 147 555 Income (loss) before income taxes 342 93 (10) 425 Income tax expense (benefit) 80 23 (7) 96 Net income (loss) $ 262 $ 70 $ (3) $ 329 Average assets $ 42,302 $ 23,329 $ 16,673 $ 82,304 (a) 2024 includes $3 million of restructuring costs and an FDIC special assessment of $2 million in the Corporate segment. 2023 includes a $50 million contribution to the First Horizon Foundation, $30 million in merger and integration expenses related to the TD Transaction, and $15 million in Visa derivative valuation expenses in the Corporate segment. (b) 2023 includes a $225 million gain on merger termination in the Corporate segment. Six Months Ended June 30, 2024 (Dollars in millions) Regional Banking Specialty Banking Corporate Consolidated Net interest income (expense) $ 1,054 $ 310 $ (111) $ 1,253 Provision for credit losses 86 23 (4) 105 Noninterest income 214 137 30 381 Noninterest expense (a) 657 207 151 1,015 Income (loss) before income taxes 525 217 (228) 514 Income tax expense (benefit) 122 53 (62) 113 Net income (loss) $ 403 $ 164 $ (166) $ 401 Average assets $ 43,283 $ 24,194 $ 14,005 $ 81,482 Six Months Ended June 30, 2023 (Dollars in millions) Regional Banking Specialty Banking Corporate Consolidated Net interest income (expense) $ 1,146 $ 307 $ (135) $ 1,318 Provision for credit losses 72 33 (5) 100 Noninterest income (b) 210 106 255 571 Noninterest expense (a) 626 195 212 1,033 Income (loss) before income taxes 658 185 (87) 756 Income tax expense (benefit) 154 45 (28) 171 Net income (loss) $ 504 $ 140 $ (59) $ 585 Average assets $ 41,800 $ 22,978 $ 15,804 $ 80,582 (a) 2024 includes $9 million in restructuring costs and an FDIC special assessment of $12 million in the Corporate segment. 2023 includes a $50 million contribution to the First Horizon Foundation, $51 million in merger and integration expenses related to the TD Transaction, and $15 million in Visa derivative valuation expenses in the Corporate segment. (b) 2023 includes a $225 million gain on merger termination in the Corporate Segment. The following tables reflect a disaggregation of FHN’s noninterest income by major product line and reportable segment for the three and six months ended June 30, 2024 and 2023: NONINTEREST INCOME DETAIL BY SEGMENT Three Months Ended June 30, 2024 (Dollars in millions) Regional Banking Specialty Banking Corporate Consolidated Noninterest income: Deposit transactions and cash management $ 39 $ 3 $ 2 $ 44 Fixed income (a) — 40 — 40 Brokerage, management fees and commissions 25 — — 25 Card and digital banking fees 17 1 2 20 Other service charges and fees 6 8 — 14 Trust services and investment management 12 — — 12 Mortgage banking income — 10 — 10 Securities gains (losses), net (b) — — 1 1 Other income (c) 10 2 8 20 Total noninterest income $ 109 $ 64 $ 13 $ 186 Three Months Ended June 30, 2023 (Dollars in millions) Regional Banking Specialty Banking Corporate Consolidated Noninterest income: Deposit transactions and cash management $ 40 $ 3 $ 2 $ 45 Fixed income (a) — 31 (1) 30 Brokerage, management fees and commissions 22 — — 22 Card and digital banking fees 18 1 2 21 Other service charges and fees 6 8 — 14 Trust services and investment management 12 — — 12 Mortgage banking income — 6 — 6 Gain on merger termination — — 225 225 Other income (c) 8 1 16 25 Total noninterest income $ 106 $ 50 $ 244 $ 400 (a) 2024 and 2023 each includes $9 million of underwriting, portfolio advisory, and other noninterest income in scope of ASC 606, "Revenue From Contracts With Customers." (b) Represents noninterest income excluded from the scope of ASC 606. Amount is presented for informational purposes to reconcile total noninterest income. (c) Includes letter of credit fees and insurance commissions in scope of ASC 606. Six Months Ended June 30, 2024 (Dollars in millions) Regional Banking Specialty Banking Corporate Consolidated Noninterest income: Deposit transactions and cash management $ 78 $ 6 $ 4 $ 88 Fixed income (a) — 92 — 92 Brokerage, management fees and commissions 49 — — 49 Card and digital banking fees 34 1 3 38 Other service charges and fees 12 15 — 27 Trust services and investment management 24 — — 24 Mortgage banking income — 19 — 19 Securities gains (losses), net (b) — — 1 1 Other income (c) 17 4 22 43 Total noninterest income $ 214 $ 137 $ 30 $ 381 Six Months Ended June 30, 2023 (Dollars in millions) Regional Banking Specialty Banking Corporate Consolidated Noninterest income: Deposit transactions and cash management $ 77 $ 6 $ 4 $ 87 Fixed income (a) — 70 (1) 69 Brokerage, management fees and commissions 44 — — 44 Card and digital banking fees 35 1 4 40 Other service charges and fees 13 14 — 27 Trust services and investment management 24 — — 24 Mortgage banking income — 11 — 11 Gain on merger termination — — 225 225 Securities gains (losses), net (b) — — 1 1 Other income (c) 17 4 22 43 Total noninterest income $ 210 $ 106 $ 255 $ 571 (a) 2024 and 2023 includes $20 million and $19 million, respectively, of underwriting, portfolio advisory, and other noninterest income in scope of ASC 606, "Revenue From Contracts With Customers." (b) Represents noninterest income excluded from the scope of ASC 606. Amount is presented for informational purposes to reconcile total noninterest income. (c) Includes letter of credit fees and insurance commissions in scope of ASC 606.

Variable Interest Entities

Variable Interest Entities	6 Months Ended
	Jun. 30, 2024
Variable Interest Entities [Abstract]
Variable Interest Entities	Variable Interest Entities FHN makes equity investments in various entities that are considered VIEs, as defined by GAAP. A VIE typically does not have sufficient equity at risk to finance its activities without additional subordinated financial support from other parties. The Company’s variable interest arises from contractual, ownership, or other monetary interests in the entity, which change with fluctuations in the fair value of the entity's net assets. FHN consolidates a VIE if FHN is the primary beneficiary of the entity. FHN is the primary beneficiary of a VIE if FHN's variable interest provides it with the power to direct the activities that most significantly impact the VIE and the right to receive benefits (or the obligation to absorb losses) that could potentially be significant to the VIE. To determine whether or not a variable interest held could potentially be significant to the VIE, FHN considers both qualitative and quantitative factors regarding the nature, size and form of its involvement with the VIE. FHN assesses whether or not it is the primary beneficiary of a VIE on an ongoing basis. Consolidated Variable Interest Entities FHN has established certain rabbi trusts related to deferred compensation plans offered to its employees. FHN contributes employee cash compensation deferrals to the trusts and directs the underlying investments made by the trusts. The assets of these trusts are available to FHN’s creditors only in the event that FHN becomes insolvent. These trusts are considered VIEs as there is no equity at risk in the trusts since FHN provided the equity interest to its employees in exchange for services rendered. FHN is considered the primary beneficiary of the rabbi trusts as it has the power to direct the activities that most significantly impact the economic performance of the rabbi trusts through its ability to direct the underlying investments made by the trusts. Additionally, FHN could potentially receive benefits or absorb losses that are significant to the trusts due to its right to receive any asset values in excess of liability payoffs and its obligation to fund any liabilities to employees that are in excess of a rabbi trust’s assets. The following table summarizes the carrying value of assets and liabilities associated with rabbi trusts used for deferred compensation plans which are consolidated by FHN as of June 30, 2024 and December 31, 2023: CONSOLIDATED VIEs (Dollars in millions) June 30, 2024 December 31, 2023 Assets: Other assets $ 187 $ 177 Liabilities: Other liabilities $ 163 $ 150 Nonconsolidated Variable Interest Entities Tax Credit Investments Through designated wholly-owned subsidiaries, First Horizon Bank makes equity investments as a limited partner in various partnerships that sponsor affordable housing projects utilizing the LIHTC. Through designated subsidiaries, First Horizon Bank periodically makes equity investments as a non-managing member in various LLCs that sponsor community development projects utilizing the NMTC. First Horizon Bank also makes equity investments as a limited partner or non-managing member in entities that receive historic tax credits. The purpose of these investments is to achieve a satisfactory return on capital and to support FHN’s community reinvestment initiatives. These entities are considered VIEs as First Horizon Bank's subsidiaries represent the holders of the equity investment at risk, but do not have the ability to direct the activities that most significantly affect the performance of the entities. FHN is therefore not the primary beneficiary of any of these entities. Accordingly, FHN does not consolidate these VIEs and accounts for these investments in other assets on the Consolidated Balance Sheets. FHN accounts for qualifying LIHTC investments under the proportional amortization method (PAM). Effective for periods after 2023, all LIHTC investments qualify for the PAM. Commencing in 2024, FHN has determined that its equity investments in NMTC and historic tax credit entities qualify for the PAM and has made the election to apply the PAM for these programs. Under this method an entity amortizes the initial cost of the investment in proportion to the tax credits and other tax benefits received and recognizes the net investment performance as a component of income tax expense. Prior to 2024, LIHTC investments that did not qualify for the PAM were accounted for using the equity method. Expenses associated with non-qualifying LIHTC investments were not material for the three and six months ended June 30, 2024 and 2023. The following table summarizes the impact to income tax expense on the Consolidated Statements of Income for the three and six months ended June 30, 2024 and 2023 for investments accounted for under the PAM. The impact of these investments is Included in other operating activities, net in the Consolidated Statements of Cash Flows. TAX CREDIT IMPACTS ON TAX EXPENSE Three Months Ended Six Months Ended (Dollars in millions) 2024 2023 2024 2023 Income tax expense (benefit): Amortization of qualifying investments $ 15 $ 13 $ 30 $ 26 Tax credits (17) (14) (33) (28) Other tax benefits related to qualifying investments (3) (3) (5) (5) Small Issuer Trust Preferred Holdings First Horizon Bank holds variable interests in trusts which have issued mandatorily redeemable preferred capital securities (“trust preferreds”) for smaller banking and insurance enterprises. First Horizon Bank has no voting rights for the trusts’ activities. The trusts’ only assets are junior subordinated debentures of the issuing enterprises. The creditors of the trusts hold no recourse to the assets of First Horizon Bank. Since First Horizon Bank is solely a holder of the trusts’ securities, it has no rights which would give it the power to direct the activities that most significantly impact the trusts’ economic performance and thus it is not considered the primary beneficiary of the trusts. First Horizon Bank has no contractual requirements to provide financial support to the trusts. On-Balance Sheet Trust Preferred Securitization In 2007, First Horizon Bank executed a securitization of certain small issuer trust preferreds for which the underlying trust meets the definition of a VIE as the holders of the equity investment at risk do not have the power through voting rights, or similar rights, to direct the activities that most significantly impact the entity’s economic performance. Since First Horizon Bank did not retain servicing or other decision-making rights, First Horizon Bank is not the primary beneficiary as it does not have the power to direct the activities that most significantly impact the trust’s economic performance. Accordingly, First Horizon Bank has accounted for the funds received through the securitization as a term borrowing in its Consolidated Balance Sheets. First Horizon Bank has no contractual requirements to provide financial support to the trust. Holdings in Agency Mortgage-Backed Securities FHN holds securities issued by various Agency securitization trusts. Based on their restrictive nature, the trusts meet the definition of a VIE since the holders of the equity investments at risk do not have the power through voting rights, or similar rights, to direct the activities that most significantly impact the entities’ economic performance. FHN could potentially receive benefits or absorb losses that are significant to the trusts based on the nature of the trusts’ activities and the size of FHN’s holdings. However, FHN is solely a holder of the trusts’ securities and does not have the power to direct the activities that most significantly impact the trusts’ economic performance and is not considered the primary beneficiary of the trusts. FHN has no contractual requirements to provide financial support to the trusts. Commercial Loan Modifications to Borrowers Experiencing Financial Difficulty For certain troubled commercial loans, First Horizon Bank modifies the terms of the borrower’s debt in an effort to increase the probability of receipt of amounts contractually due. Following a modification to borrowers experiencing financial difficulty, the borrower entity typically meets the definition of a VIE as the initial determination of whether an entity is a VIE must be reconsidered as events have proven that the entity’s equity is not sufficient to permit it to finance its activities without additional subordinated financial support or a restructuring of the terms of its financing. As First Horizon Bank does not have the power to direct the activities that most significantly impact such troubled commercial borrowers’ operations, it is not considered the primary beneficiary even in situations where, based on the size of the financing provided, First Horizon Bank is exposed to potentially significant benefits and losses of the borrowing entity. First Horizon Bank has no contractual requirements to provide financial support to the borrowing entities beyond certain funding commitments established upon restructuring of the terms of the debt that allows for preparation of the underlying collateral for sale. Proprietary Trust Preferred Issuances In conjunction with its acquisitions, FHN acquired junior subordinated debt underlying multiple issuances of trust preferred debt. All of the trusts are considered VIEs because the ownership interests from the capital contributions to these trusts are not considered “at risk” in evaluating whether the holders of the equity investments at risk in the trusts have the ability to direct the activities that most significantly impact the entities’ economic performance. Thus, FHN cannot be the trusts’ primary beneficiary because its ownership interests in the trusts are not considered variable interests as they are not considered “at risk”. Consequently, none of the trusts are consolidated by FHN. The following tables summarize FHN’s nonconsolidated VIEs as of June 30, 2024 and December 31, 2023: NONCONSOLIDATED VIEs AT JUNE 30, 2024 (Dollars in millions) Maximum Liability Classification Type Low income housing partnerships $ 572 $ 194 (a) Other tax credit investments (b) 97 82 Other assets Small issuer trust preferred holdings (c) 171 — Loans and leases On-balance sheet trust preferred securitization 26 88 (d) Holdings of agency mortgage-backed securities (c) 7,823 — (e) Commercial loan modifications to borrowers experiencing financial difficulty (f) 193 — Loans and leases Proprietary trust preferred issuances (g) — 167 Term borrowings (a) Maximum loss exposure represents $378 million of current investments and $194 million of accrued contractual funding commitments. Accrued funding commitments represent unconditional contractual obligations for future funding events and are also recognized in other liabilities. FHN currently expects to be required to fund these accrued commitments by the end of 2024. (b) Maximum loss exposure represents the value of current investments. (c) Maximum loss exposure represents the value of current investments. A liability is not recognized as FHN is solely a holder of the trusts’ securities. (d) Includes $113 million classified as loans and leases and $2 million classified as trading securities, which are offset by $88 million classified as term borrowings. (e) Includes $275 million classified as trading securities, $1.3 billion classified as held to maturity, and $6.3 billion classified as securities available for sale. (f) Maximum loss exposure represents $193 million of current receivables with no additional contractual funding commitments on loans related to commercial loan modifications to borrowers experiencing financial difficulty. (g) No exposure to loss due to nature of FHN's involvement. NONCONSOLIDATED VIEs AT DECEMBER 31, 2023 (Dollars in millions) Maximum Liability Classification Type Low income housing partnerships $ 587 $ 223 (a) Other tax credit investments (b) 79 64 Other assets Small issuer trust preferred holdings (c) 173 — Loans and leases On-balance sheet trust preferred securitization 26 88 (d) Holdings of agency mortgage-backed securities (c) 8,402 — (e) Commercial loan modifications to borrowers experiencing financial difficulty (f) 129 — Loans and leases Proprietary trust preferred issuances (g) — 167 Term borrowings (a) Maximum loss exposure represents $364 million of current investments and $223 million of accrued contractual funding commitments. Accrued funding commitments represent unconditional contractual obligations for future funding events and are also recognized in other liabilities. FHN currently expects to be required to fund these accrued commitments by the end of 2024. (b) Maximum loss exposure represents current investments. (c) Maximum loss exposure represents the value of current investments. A liability is not recognized as FHN is solely a holder of the trusts’ securities. (d) Includes $113 million classified as loans and leases and $2 million classified as trading securities, which are offset by $88 million classified as term borrowings. (e) Includes $450 million classified as trading securities, $1.3 billion classified as held to maturity, and $6.6 billion classified as securities available for sale. (f) Maximum loss exposure represents $129 million of current receivables with no additional contractual funding commitments on loans related to commercial loan modifications to borrowers experiencing financial difficulty. (g) No exposure to loss due to nature of FHN's involvement.

Derivatives

Derivatives	6 Months Ended
	Jun. 30, 2024
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivatives	Derivatives In the normal course of business, FHN utilizes various financial instruments (including derivative contracts and credit-related agreements) through its fixed income and risk management operations, as part of its risk management strategy and as a means to meet clients’ needs. Derivative instruments are subject to credit and market risks in excess of the amount recorded on the balance sheet as required by GAAP. The contractual or notional amounts of these financial instruments do not necessarily represent the amount of credit or market risk. However, they can be used to measure the extent of involvement in various types of financial instruments. Controls and monitoring procedures for these instruments have been established and are routinely reevaluated. The ALCO controls, coordinates, and monitors the usage and effectiveness of these financial instruments. Credit risk represents the potential loss that may occur if a party to a transaction fails to perform according to the terms of the contract. The measure of credit exposure is the replacement cost of contracts with a positive fair value. FHN manages credit risk by entering into financial instrument transactions through national exchanges, primary dealers or approved counterparties, and by using mutual margining and master netting agreements whenever possible to limit potential exposure. FHN also maintains collateral posting requirements with certain counterparties to limit credit risk. Daily margin posted or received with central clearinghouses is considered a legal settlement of the related derivative contracts which results in a net presentation for each contract in the Consolidated Balance Sheets. Treatment of daily margin as a settlement has no effect on hedge accounting or gains/losses for the applicable derivative contracts. On June 30, 2024 and December 31, 2023, respectively, FHN had $648 million and $406 million of cash receivables and $22 million and $33 million of cash payables related to collateral posting under master netting arrangements, inclusive of collateral posted related to contracts with adjustable collateral posting thresholds and over-collateralized positions, with derivative counterparties. With exchange-traded contracts, the credit risk is limited to the clearinghouse used. For non-exchange traded instruments, credit risk may occur when there is a gain in the fair value of the financial instrument and the counterparty fails to perform according to the terms of the contract and/or when the collateral proves to be of insufficient value. See additional discussion regarding master netting agreements and collateral posting requirements later in this note under the heading “Master Netting and Similar Agreements.” Market risk represents the potential loss due to the decrease in the value of a financial instrument caused primarily by changes in interest rates or the prices of debt instruments. FHN manages market risk by establishing and monitoring limits on the types and degree of risk that may be undertaken. FHN continually measures this risk through the use of models that measure value-at-risk and earnings-at-risk. Derivative Instruments FHN enters into various derivative contracts both to facilitate client transactions and as a risk management tool. Where contracts have been created for clients, FHN enters into upstream transactions with dealers to offset its risk exposure. Contracts with dealers that require central clearing are novated to a clearing agent who becomes FHN’s counterparty. Derivatives are also used as a risk management tool to hedge FHN’s exposure to changes in interest rates or other defined market risks. Forward contracts are over-the-counter contracts where two parties agree to purchase and sell a specific quantity of a financial instrument at a specified price, with delivery or settlement at a specified date. Futures contracts are exchange-traded contracts where two parties agree to purchase and sell a specific quantity of a financial instrument at a specified price, with delivery or settlement at a specified date. Interest rate option contracts give the purchaser the right, but not the obligation, to buy or sell a specified quantity of a financial instrument, at a specified price, during a specified period of time. Caps and floors are options that are linked to a notional principal amount and an underlying indexed interest rate. Interest rate swaps involve the exchange of interest payments at specified intervals between two parties without the exchange of any underlying principal. Swaptions are options on interest rate swaps that give the purchaser the right, but not the obligation, to enter into an interest rate swap agreement during a specified period of time. Trading Activities FHNF trades U.S. Treasury, U.S. Agency, government-guaranteed loan, mortgage-backed, corporate and municipal fixed income securities, and other securities for distribution to clients. When these securities settle on a delayed basis, they are considered forward contracts. FHNF also enters into interest rate contracts, including caps, swaps, and floors, for its clients. In addition, FHNF enters into futures and option contracts to economically hedge interest rate risk associated with a portion of its securities inventory. These transactions are measured at fair value, with changes in fair value recognized in noninterest income. Related assets and liabilities are recorded on the Consolidated Balance Sheets as derivative assets and derivative liabilities within other assets and other liabilities. The FHNF Risk Committee and the Credit Risk Management Committee collaborate to mitigate credit risk related to these transactions. Credit risk is controlled through credit approvals, risk control limits, and ongoing monitoring procedures. Total trading revenues were $31 million and $22 million for the three months ended June 30, 2024 and 2023, and $75 million and $49 million for the six months ended June 30, 2024 and 2023 , respectively. Trading revenues are inclusive of both derivative and non-derivative financial instruments and are included in fixed income on the Consolidated Statements of Income. The following table summarizes derivatives associated with FHNF's trading activities as of June 30, 2024 and December 31, 2023: DERIVATIVES ASSOCIATED WITH TRADING June 30, 2024 (Dollars in millions) Notional Assets Liabilities Customer interest rate contracts $ 4,155 $ 7 $ 230 Offsetting upstream interest rate contracts 4,328 165 8 Forwards and futures purchased 1,891 3 3 Forwards and futures sold 1,949 3 2 December 31, 2023 (Dollars in millions) Notional Assets Liabilities Customer interest rate contracts $ 4,067 $ 22 $ 197 Offsetting upstream interest rate contracts 4,273 135 23 Forwards and futures purchased 777 9 — Forwards and futures sold 912 — 9 Interest Rate Risk Management FHN’s ALCO focuses on managing market risk by controlling and limiting earnings volatility attributable to changes in interest rates. Interest rate risk exists to the extent that interest-earning assets and interest-bearing liabilities have different maturity or repricing characteristics. FHN uses derivatives, primarily swaps, that are designed to moderate the impact on earnings as interest rates change. Interest paid or received for swaps utilized by FHN to hedge the fair value of long-term debt is recognized as an adjustment of the interest expense of the liabilities whose risk is being managed. FHN’s interest rate risk management policy is to use derivatives to hedge interest rate risk or market value of assets or liabilities, not to speculate. In addition, FHN has entered into certain interest rate swaps and caps as a part of a product offering to commercial clients that includes customer derivatives paired with upstream offsetting market instruments that, when completed, are designed to mitigate interest rate risk. These contracts do not qualify for hedge accounting and are measured at fair value with gains or losses included in current earnings in noninterest expense on the Consolidated Statements of Income. The following table summarizes FHN’s derivatives associated with interest rate risk management activities as of June 30, 2024 and December 31, 2023: DERIVATIVES ASSOCIATED WITH INTEREST RATE RISK MANAGEMENT June 30, 2024 (Dollars in millions) Notional Assets Liabilities Customer Interest Rate Contracts Hedging Hedging Instruments and Hedged Items: Customer interest rate contracts $ 8,427 $ 7 $ 456 Offsetting upstream interest rate contracts 8,427 453 8 December 31, 2023 (Dollars in millions) Notional Assets Liabilities Customer Interest Rate Contracts Hedging Hedging Instruments and Hedged Items: Customer interest rate contracts $ 8,375 $ 21 $ 392 Offsetting upstream interest rate contracts 8,375 389 22 The following table summarizes gains (losses) on FHN’s derivatives associated with interest rate risk management activities for the three and six months ended June 30, 2024 and 2023: DERIVATIVE GAINS (LOSSES) ASSOCIATED WITH INTEREST RATE RISK MANAGEMENT Three Months Ended Six Months Ended 2024 2023 2024 2023 (Dollars in millions) Gains (Losses) Gains (Losses) Gains (Losses) Gains (Losses) Customer Interest Rate Contracts Hedging Hedging Instruments and Hedged Items: Customer interest rate contracts (a) $ 9 $ (130) $ (77) $ 31 Offsetting upstream interest rate contracts (a) (9) 130 77 (31) (a) Gains (losses) included in other expense within the Consolidated Statements of Income. Cash Flow Hedges Prior to 2021, FHN entered into pay floating, receive fixed interest rate swaps designed to manage its exposure to the variability in cash flows related to interest payments on debt instruments. The debt instruments primarily consist of held-to-maturity commercial loans that have variable interest payments that historically were based on 1-month LIBOR. In second quarter 2023, the remaining hedge was revised to reference 1-month Term SOFR after the cessation of LIBOR-based cash flows. This hedge matured in first quarter 2024. In conjunction with the IBKC merger, FHN acquired interest rate contracts (floors and collars) which were re-designated as cash flow hedges. The debt instruments associated with these hedges also primarily consisted of held-to-maturity commercial loans that had variable interest payments that were based on 1-month LIBOR. The last hedge acquired in conjunction with the IBKC merger matured in second quarter 2023. In 2022, FHN entered into interest rate contracts (floors and swaps) which have been designated as cash flow hedges. These hedges reference 1-month Term SOFR and FHN made certain elections under ASU 2020-04 to facilitate qualification for hedge accounting during the time that hedged items transitioned away from 1-Month LIBOR. In a cash flow hedge, the entire change in the fair value of the interest rate derivatives included in the assessment of hedge effectiveness is initially recorded in OCI and is subsequently reclassified from OCI to current period earnings (interest income or interest expense) in the same period that the hedged item affects earnings. The following tables summarize FHN’s derivative activities associated with cash flow hedges as of June 30, 2024 and December 31, 2023: DERIVATIVES ASSOCIATED WITH CASH FLOW HEDGES June 30, 2024 (Dollars in millions) Notional Assets Liabilities Cash Flow Hedges Hedging Instruments: Interest rate contracts $ 5,000 $ — $ 82 Hedged Items: Variability in cash flows related to debt instruments (primarily loans) N/A $ 5,000 N/A December 31, 2023 (Dollars in millions) Notional Assets Liabilities Cash Flow Hedges Hedging Instruments: Interest rate contracts $ 5,200 $ — $ 32 Hedged Items: Variability in cash flows related to debt instruments (primarily loans) N/A $ 5,200 N/A The following table summarizes gains (losses) on FHN’s derivatives associated with cash flow hedges for the three and six months ended June 30, 2024 and 2023: DERIVATIVE GAINS (LOSSES) ASSOCIATED WITH CASH FLOW HEDGES Three Months Ended Six Months Ended 2024 2023 2024 2023 (Dollars in millions) Gains (Losses) Gains (Losses) Gains (Losses) Gains (Losses) Cash Flow Hedges Hedging Instruments: Interest rate contracts (a) $ (2) $ (66) $ (41) $ (13) Gain (loss) recognized in other comprehensive income (loss) (15) (59) (58) (26) Gain (loss) reclassified from AOCI into interest income 13 13 26 24 (a) Approximately $23 million of pre-tax losses are expected to be reclassified into earnings in the next twelve months. Other Derivatives FHN has mortgage banking operations that include the origination and sale of loans into the secondary market. As part of the origination of loans, FHN enters into interest rate lock commitments with borrowers. Additionally, FHN enters into forward sales contracts with buyers for delivery of loans at a future date. Both of these contracts qualify as freestanding derivatives and are recognized at fair value through earnings. The notional and fair values of these contracts are presented in the table below. DERIVATIVES ASSOCIATED WITH MORTGAGE BANKING HEDGES June 30, 2024 (Dollars in millions) Notional Assets Liabilities Mortgage Banking Hedges Option contracts written $ 82 $ 1 $ — Forward contracts written 154 1 — December 31, 2023 (Dollars in millions) Notional Assets Liabilities Mortgage Banking Hedges Option contracts written $ 55 $ 1 $ — Forward contracts written 93 — 1 The following table summarizes gains (losses) on FHN's derivatives associated with mortgage banking activities for the three and six months ended June 30, 2024 and 2023: DERIVATIVE GAINS (LOSSES) ASSOCIATED WITH MORTGAGE BANKING HEDGES Three Months Ended Six Months Ended 2024 2023 2024 2023 (Dollars in millions) Gains (Losses) Gains (Losses) Gains (Losses) Gains (Losses) Mortgage Banking Hedges Option contracts written $ 1 $ — $ — $ 2 Forward contracts written — (2) 1 6 In conjunction with pre-2020 sales of Visa Class B shares, FHN entered into derivative transactions whereby FHN will make or receive cash payments whenever the conversion ratio of the Visa Class B shares into Visa Class A shares is adjusted. As of June 30, 2024 and December 31, 2023, the derivative liabilities associated with the sales of Visa Class B shares were $18 million and $23 million, respectively. FHN recognized $15 million in derivative valuation adjustments related to prior sales of Visa Class B shares for the year ended December 31, 2023. See Note 16 - Fair Value of Assets and Liabilities for discussion of the valuation inputs and processes for these Visa-related derivatives. FHN utilizes cross currency swaps and cross currency interest rate swaps to economically hedge its exposure to foreign currency risk and interest rate risk associated with non-U.S. dollar denominated loans. As of June 30, 2024 and December 31, 2023, these loans were valued at $9 million and $17 million, respectively. The balance sheet amount and the gains/losses associated with these derivatives were not significant. Related to its loan participation/syndication activities, FHN enters into risk participation agreements, under which it assumes exposure for, or receives indemnification for, borrowers’ performance on underlying interest rate derivative contracts. FHN's counterparties in these contracts are other lending institutions involved in the loan participation/syndication arrangements for which the underlying interest rate derivative contract is intended to hedge interest rate risk for the borrower. FHN will make (other institution is the lead bank) or receive (FHN is the lead bank) payments for risk participations if the borrower defaults on its obligation to perform under the terms of its interest rate derivative agreement with the lead bank in the participation. As of June 30, 2024 and December 31, 2023, the notional values of FHN’s risk participations were $368 million and $351 million of derivative assets and $894 million and $874 million of derivative liabilities, respectively. The notional value for risk participation/syndication agreements is consistent with the percentage of participation in the lending arrangement. FHN's maximum exposure or benefit in the risk participation agreements is contingent on the fair value of the underlying interest rate derivative contracts for which the borrower is in a liability position at the time of default. FHN monitors the credit risk associated with the borrowers to which the risk participations relate through the same credit risk assessment process utilized for establishing credit loss estimates for its loan portfolio. These credit risk estimates are included in the determination of fair value for the risk participations. Assuming all underlying third-party customers referenced in the swap contracts defaulted at June 30, 2024 and December 31, 2023, the exposure from these agreements would not be material based on the fair value of the underlying swaps. FHN holds certain certificates of deposit with the rate of return based on an equity index which is considered an embedded derivative as a written option that must be separately recognized. The risks of the written option are offset by purchasing an option with terms that mirror the written option, which is also carried at fair value on the Company’s Consolidated Balance Sheets. As of June 30, 2024 and December 31, 2023, FHN had recognized an insignificant amount of assets and liabilities associated with these contracts. Master Netting and Similar Agreements FHN uses master netting agreements, mutual margining agreements and collateral posting requirements to minimize credit risk on derivative contracts. Master netting and similar agreements are used when counterparties have multiple derivatives contracts that allow for a “right of setoff,” meaning that a counterparty may net offsetting positions and collateral with the same counterparty under the contract to determine a net receivable or payable. The following discussion provides an overview of these arrangements which may vary due to the derivative type and market in which a derivative transaction is executed. Interest rate derivatives are subject to agreements consistent with standard agreement forms of the ISDA. Currently, all interest rate derivative contracts are entered into as over-the-counter transactions and collateral posting requirements are based on the net asset or liability position with each respective counterparty. For contracts that require central clearing, novation to a counterparty with access to a clearinghouse occurs and initial margin is posted. Cash margin received (posted) that is considered settlements for the derivative contracts is included in the respective derivative asset (liability) value. Cash margin that is considered collateral received (posted) for interest rate derivatives is recognized as a liability (asset) on FHN’s Consolidated Balance Sheets. Interest rate derivatives with clients that are smaller financial institutions typically require posting of collateral by the counterparty to FHN. This collateral is subject to a threshold with daily adjustments based upon changes in the level or fair value of the derivative position. Positions and related collateral can be netted in the event of default. Collateral pledged by a counterparty is typically cash or securities. The securities pledged as collateral are not recognized within FHN’s Consolidated Balance Sheets. Interest rate derivatives associated with lending arrangements share the collateral with the related loan(s). The derivative and loan positions may be netted in the event of default. For disclosure purposes, the entire collateral amount is allocated to the loan. Interest rate derivatives with larger financial institutions typically contain provisions whereby the collateral posting thresholds under the agreements adjust based on the credit ratings of both counterparties. If the credit rating of FHN and/or First Horizon Bank is lowered, FHN could be required to post additional collateral with the counterparties. Conversely, if the credit rating of FHN and/or First Horizon Bank is increased, FHN could have collateral released and be required to post less collateral in the future. Also, if a counterparty’s credit ratings were to decrease, FHN and/or First Horizon Bank could require the posting of additional collateral; whereas if a counterparty’s credit ratings were to increase, the counterparty could require the release of excess collateral. Collateral for these arrangements is adjusted daily based on changes in the net fair value position with each counterparty. The net fair value, determined by individual counterparty, of all derivative instruments with adjustable collateral posting thresholds was $3 million of assets and $227 million of liabilities on June 30, 2024, and $12 million of assets and $188 million of liabilities on December 31, 2023. As of June 30, 2024 and December 31, 2023, FHN had received collateral of $80 million and $95 million and posted collateral of $105 million and $83 million, respectively, in the normal course of business related to these agreements. Certain agreements also contain accelerated termination provisions, inclusive of the right of offset, if a counterparty’s credit rating falls below a specified level. If a counterparty’s debt rating (including FHN’s and First Horizon Bank’s) were to fall below these minimums, these provisions would be triggered, and the counterparties could terminate the agreements and require immediate settlement of all derivative contracts under the agreements. The net fair value, determined by individual counterparty, of all interest rate derivative instruments with credit-risk-related contingent accelerated termination provisions was $4 million of assets and $227 million of liabilities on June 30, 2024, and $12 million of assets and $188 million of liabilities on December 31, 2023. As of June 30, 2024 and December 31, 2023, FHN had received collateral of $81 million and $95 million and posted collateral of $105 million and $83 million, respectively, in the normal course of business related to these contracts. FHNF buys and sells various types of securities for its clients. When these securities settle on a delayed basis, they are considered forward contracts, and are generally not subject to master netting agreements. For futures and options, FHN transacts through a third party, and the transactions are subject to margin and collateral maintenance requirements. In the event of default, open positions can be offset along with the associated collateral. For this disclosure, FHN considers the impact of master netting and other similar agreements which allow FHN to settle all contracts with a single counterparty on a net basis and to offset the net derivative asset or liability position with the related securities and cash collateral. The application of the collateral cannot reduce the net derivative asset or liability position below zero, and therefore any excess collateral is not reflected in the following tables. The following table provides details of derivative assets and collateral received as presented on the Consolidated Balance Sheets as of June 30, 2024 and December 31, 2023: DERIVATIVE ASSETS & COLLATERAL RECEIVED Gross amounts not offset in the Balance Sheets (Dollars in millions) Gross amounts Gross amounts Net amounts of Derivative Collateral Net amount Derivative assets: June 30, 2024 Interest rate derivative contracts $ 633 $ — $ 633 $ (79) $ (533) $ 21 Forward contracts 6 — 6 (3) — 3 $ 639 $ — $ 639 $ (82) $ (533) $ 24 December 31, 2023 Interest rate derivative contracts $ 567 $ — $ 567 $ (75) $ (486) $ 6 Forward contracts 9 — 9 (4) (3) 2 $ 576 $ — $ 576 $ (79) $ (489) $ 8 (a) Included in other assets on the Consolidated Balance Sheets. As of June 30, 2024 and December 31, 2023, $1 million and $1 million, respectively, of derivative assets have been excluded from these tables because they are generally not subject to master netting or similar agreements. The following table provides details of derivative liabilities and collateral pledged as presented on the Consolidated Balance Sheets as of June 30, 2024 and December 31, 2023: DERIVATIVE LIABILITIES & COLLATERAL PLEDGED Gross amounts not offset (Dollars in millions) Gross amounts Gross amounts Net amounts of Derivative Collateral Net amount Derivative liabilities: June 30, 2024 Interest rate derivative contracts $ 784 $ — $ 784 $ (79) $ (193) $ 512 Forward contracts 5 — 5 (3) — 2 $ 789 $ — $ 789 $ (82) $ (193) $ 514 December 31, 2023 Interest rate derivative contracts $ 666 $ — $ 666 $ (75) $ (164) $ 427 Forward contracts 9 — 9 (4) (5) — $ 675 $ — $ 675 $ (79) $ (169) $ 427 (a) Included in other liabilities on the Consolidated Balance Sheets. As of June 30, 2024 and December 31, 2023, $19 million and $24 million, respectively, of derivative liabilities (primarily Visa-related derivatives) have been excluded from these tables because they are generally not subject to master netting or similar agreements.

Master Netting and Similar Agre

Master Netting and Similar Agreements—Repurchase, Reverse Repurchase, and Securities Borrowing Transactions	6 Months Ended
	Jun. 30, 2024
Offsetting [Abstract]
Master Netting and Similar Agreements—Repurchase, Reverse Repurchase, and Securities Borrowing Transactions	Master Netting and Similar Agreements—Repurchase, Reverse Repurchase, and Securities Borrowing Transactions For repurchase, reverse repurchase and securities borrowing transactions, FHN and each counterparty have the ability to offset all open positions and related collateral in the event of default. Due to the nature of these transactions, the value of the collateral for each transaction approximates the value of the corresponding receivable or payable. For repurchase agreements through FHN’s fixed income business (securities purchased under agreements to resell and securities sold under agreements to repurchase), transactions are collateralized by securities and/or government guaranteed loans which are delivered on the settlement date and are maintained throughout the term of the transaction. For FHN’s repurchase agreements through banking activities (securities sold under agreements to repurchase), securities are typically pledged at settlement and not released until maturity. For asset positions, the collateral is not included on FHN’s Consolidated Balance Sheets. For liability positions, securities collateral pledged by FHN is generally represented within FHN’s trading or available-for-sale securities portfolios. For this disclosure, FHN considers the impact of master netting and other similar agreements that allow FHN to settle all contracts with a single counterparty on a net basis and to offset the net asset or liability position with the related securities collateral. The application of the collateral cannot reduce the net asset or liability position below zero, and therefore any excess collateral is not reflected in the tables below. Securities purchased under agreements to resell is included in federal funds sold and securities purchased under agreements to resell in the Consolidated Balance Sheets. Securities sold under agreements to repurchase is included in short-term borrowings. The following table provides details of securities purchased under agreements to resell and collateral pledged by counterparties as of June 30, 2024 and December 31, 2023: SECURITIES PURCHASED UNDER AGREEMENTS TO RESELL Gross amounts not offset in the (Dollars in millions) Gross amounts Gross amounts Net amounts of Offsetting Securities collateral Net amount Securities purchased under agreements to resell: June 30, 2024 $ 424 $ — $ 424 $ — $ (418) $ 6 December 31, 2023 519 — 519 — (516) 3 The following table provides details of securities sold under agreements to repurchase and collateral pledged by FHN as of June 30, 2024 and December 31, 2023: SECURITIES SOLD UNDER AGREEMENTS TO REPURCHASE Gross amounts not offset in the (Dollars in millions) Gross amounts Gross amounts Net amounts of Offsetting Securities/ Net amount Securities sold under agreements to repurchase: June 30, 2024 $ 1,948 $ — $ 1,948 $ — $ (1,948) $ — December 31, 2023 1,921 — 1,921 — (1,921) — Due to the short duration of securities sold under agreements to repurchase and the nature of collateral involved, the risks associated with these transactions are considered minimal. The following table provides details, by collateral type, of the remaining contractual maturity of securities sold under agreements to repurchase as of June 30, 2024 and December 31, 2023: MATURITIES OF SECURITIES SOLD UNDER AGREEMENTS TO REPURCHASE June 30, 2024 (Dollars in millions) Overnight and Up to 30 Days Total Securities sold under agreements to repurchase: Government agency issued MBS $ 1,579 $ — $ 1,579 Government agency issued CMO 326 — 326 Other U.S. government agencies 43 — 43 Total securities sold under agreements to repurchase $ 1,948 $ — $ 1,948 December 31, 2023 (Dollars in millions) Overnight and Up to 30 Days Total Securities sold under agreements to repurchase: Government agency issued MBS $ 1,717 $ — $ 1,717 Government agency issued CMO 161 — 161 Other U.S. government agencies 43 — 43 Total securities sold under agreements to repurchase $ 1,921 $ — $ 1,921

Fair Value of Assets and Liabil

Fair Value of Assets and Liabilities	6 Months Ended
	Jun. 30, 2024
Fair Value Disclosures [Abstract]
Fair Value of Assets and Liabilities	Fair Value of Assets and Liabilities FHN groups its assets and liabilities measured at fair value in three levels, based on the markets in which the assets and liabilities are traded and the reliability of the assumptions used to determine fair value. This hierarchy requires FHN to maximize the use of observable market data, when available, and to minimize the use of unobservable inputs when determining fair value. Each fair value measurement is placed into the proper level based on the lowest level of significant input. These levels are: • Level 1 —Valuation is based upon quoted prices for identical instruments traded in active markets. • Level 2 —Valuation is based upon quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active, and model-based valuation techniques for which all significant assumptions are observable in the market. • Level 3 —Valuation is generated from model-based techniques that use significant assumptions not observable in the market. These unobservable assumptions reflect management’s estimates of assumptions that market participants would use in pricing the asset or liability. Valuation techniques include use of option pricing models, discounted cash flow models, and similar techniques. The following table presents the balances of assets and liabilities measured at fair value on a recurring basis as of June 30, 2024 and December 31, 2023: BALANCES OF ASSETS & LIABILITIES MEASURED AT FAIR VALUE ON A RECURRING BASIS June 30, 2024 (Dollars in millions) Level 1 Level 2 Level 3 Total Trading securities: U.S. treasuries $ — $ 12 $ — $ 12 Government agency issued MBS — 83 — 83 Government agency issued CMO — 192 — 192 Other U.S. government agencies — 116 — 116 States and municipalities — 31 — 31 Corporate and other debt — 799 — 799 Interest-only strips — — 16 16 Total trading securities — 1,233 16 1,249 Loans held for sale (elected fair value) — 102 15 117 Securities available for sale: Government agency issued MBS — 4,231 — 4,231 Government agency issued CMO — 2,020 — 2,020 Other U.S. government agencies — 1,118 — 1,118 States and municipalities — 555 — 555 Total securities available for sale — 7,924 — 7,924 Other assets: Deferred compensation mutual funds 107 — — 107 Equity, mutual funds, and other 34 — — 34 Derivatives, forwards and futures 6 — — 6 Derivatives, interest rate contracts — 634 — 634 Total other assets 147 634 — 781 Total assets $ 147 $ 9,893 $ 31 $ 10,071 Trading liabilities: U.S. treasuries $ — $ 342 $ — $ 342 Corporate and other debt — 81 — 81 Total trading liabilities — 423 — 423 Other liabilities: Derivatives, forwards and futures 5 — — 5 Derivatives, interest rate contracts — 785 — 785 Derivatives, other — — 18 18 Total other liabilities 5 785 18 808 Total liabilities $ 5 $ 1,208 $ 18 $ 1,231 December 31, 2023 (Dollars in millions) Level 1 Level 2 Level 3 Total Trading securities: U.S. treasuries $ — $ 3 $ — $ 3 Government agency issued MBS — 114 — 114 Government agency issued CMO — 336 — 336 Other U.S. government agencies — 152 — 152 States and municipalities — 17 — 17 Corporate and other debt — 777 — 777 Interest-only strips — — 13 13 Total trading securities — 1,399 13 1,412 Loans held for sale (elected fair value) — 42 26 68 Securities available for sale: Government agency issued MBS — 4,484 — 4,484 Government agency issued CMO — 2,146 — 2,146 Other U.S. government agencies — 1,172 — 1,172 States and municipalities — 589 — 589 Total securities available for sale — 8,391 — 8,391 Other assets: Deferred compensation mutual funds 102 — — 102 Equity, mutual funds, and other 34 — — 34 Derivatives, forwards and futures 9 — — 9 Derivatives, interest rate contracts — 568 — 568 Total other assets 145 568 — 713 Total assets $ 145 $ 10,400 $ 39 $ 10,584 Trading liabilities: U.S. treasuries $ — $ 426 $ — $ 426 Government agency issued MBS — 1 — 1 Corporate and other debt — 82 — 82 Total trading liabilities — 509 — 509 Other liabilities: Derivatives, forwards and futures 10 — — 10 Derivatives, interest rate contracts — 666 — 666 Derivatives, other — — 23 23 Total other liabilities 10 666 23 699 Total liabilities $ 10 $ 1,175 $ 23 $ 1,208 Changes in Recurring Level 3 Fair Value Measurements The changes in Level 3 assets and liabilities measured at fair value for the three months ended June 30, 2024 and 2023 on a recurring basis are summarized as follows: CHANGES IN LEVEL 3 ASSETS & LIABILITIES MEASURED AT FAIR VALUE Three Months Ended June 30, 2024 (Dollars in millions) Interest-only strips Loans held Net Balance on April 1, 2024 $ 19 $ 14 $ (20) Total net gains (losses) included in net income (1) — — Purchases — 1 — Sales (8) — — Settlements — (1) 2 Net transfers into (out of) Level 3 6 (b) 1 — Balance on June 30, 2024 $ 16 $ 15 $ (18) Net unrealized gains (losses) included in net income $ — (c) $ — (a) $ — (d) Three Months Ended June 30, 2023 (Dollars in millions) Interest-only strips Loans held Net Balance on April 1, 2023 $ 28 $ 21 $ (21) Total net gains (losses) included in net income (3) — (15) Purchases — 1 — Sales (5) — — Settlements — — 2 Net transfers into (out of) Level 3 16 (b) — — Balance on June 30, 2023 $ 36 $ 22 $ (34) Net unrealized gains (losses) included in net income $ (2) (c) $ — (a) $ (15) (d) (a) Primarily included in mortgage banking income on the Consolidated Statements of Income. (b) Transfers into interest-only strips Level 3 measured on a recurring basis reflect movements from loans held for sale (Level 2 nonrecurring). (c) Primarily included in fixed income on the Consolidated Statements of Income. (d) Included in other expense on the Consolidated Statements of Income. The changes in Level 3 assets and liabilities measured at fair value for the six months ended June 30, 2024 and 2023 on a recurring basis are summarized as follows: CHANGES IN LEVEL 3 ASSETS & LIABILITIES MEASURED AT FAIR VALUE Six Months Ended June 30, 2024 (Dollars in millions) Interest-only strips Loans held Net Balance on January 1, 2024 $ 13 $ 26 $ (23) Total net gains (losses) included in net income (2) — — Purchases — 2 — Sales (10) (13) — Settlements — (1) 5 Net transfers into (out of) Level 3 15 (b) 1 — Balance on June 30, 2024 $ 16 $ 15 $ (18) Net unrealized gains (losses) included in net income $ (1) (c) $ — (a) $ — (d) Six Months Ended June 30, 2023 (Dollars in millions) Interest-only strips Loans held Net Balance on January 1, 2023 $ 25 $ 22 $ (27) Total net gains (losses) included in net income (6) — (15) Purchases — 2 — Sales (8) (2) — Settlements — — 8 Net transfers into (out of) Level 3 25 (b) — — Balance on June 30, 2023 $ 36 $ 22 $ (34) Net unrealized gains (losses) included in net income $ (3) (c) $ — (a) $ (15) (d) (a) Primarily included in mortgage banking income on the Consolidated Statements of Income. (b) Transfers into interest-only strips Level 3 measured on a recurring basis reflect movements from loans held for sale (Level 2 nonrecurring). (c) Primarily included in fixed income on the Consolidated Statements of Income. (d) Included in other expense on the Consolidated Statements of Income. There were no net unrealized gains (losses) for Level 3 assets and liabilities included in other comprehensive income as of June 30, 2024 and 2023. Nonrecurring Fair Value Measurements From time to time, FHN may be required to measure certain other financial assets at fair value on a nonrecurring basis in accordance with GAAP. These adjustments to fair value usually result from the application of lower of cost or market (LOCOM) accounting or write-downs of individual assets. For assets measured at fair value on a nonrecurring basis which were still held on the Consolidated Balance Sheets at June 30, 2024, and December 31, 2023, respectively, the following tables provide the level of valuation assumptions used to determine each adjustment and the related carrying value. LEVEL OF VALUATION ASSUMPTIONS FOR ASSETS MEASURED AT FAIR VALUE ON A NONRECURRING BASIS Carrying value at June 30, 2024 (Dollars in millions) Level 1 Level 2 Level 3 Total Loans held for sale—SBAs and USDA $ — $ 327 $ — $ 327 Loans and leases (a) — — 308 308 OREO (b) — — 4 4 Carrying value at December 31, 2023 (Dollars in millions) Level 1 Level 2 Level 3 Total Loans held for sale—SBAs and USDA $ — $ 406 $ — $ 406 Loans and leases (a) — — 245 245 OREO (b) — — 4 4 Other assets (c) — — 90 90 (a) Represents carrying value of loans for which adjustments are required to be based on the appraised value of the collateral less estimated costs to sell. Write-downs on these loans are recognized as part of provision for credit losses. (b) Represents the fair value and related losses of foreclosed properties that were measured subsequent to their initial classification as OREO. Balance excludes OREO related to government-insured mortgages. (c) Represents tax credit investments accounted for under the equity method. For assets measured on a nonrecurring basis which were still held on the Consolidated Balance Sheets at period end, the following table provides information about the fair value adjustments recorded during the three and six months ended June 30, 2024 and 2023: FAIR VALUE ADJUSTMENTS ON ASSETS MEASURED ON A NONRECURRING BASIS Net gains (losses) Net gains (losses) (Dollars in millions) 2024 2023 2024 2023 Loans held for sale—SBAs and USDA $ (1) $ (1) $ (1) $ (2) Loans and leases (a) (31) (19) (56) (23) Other assets (b) — (1) — (1) $ (32) $ (21) $ (57) $ (26) (a) Write-downs on these loans are recognized as part of provision for credit losses. (b) Represents tax credit investments accounted for under the equity method. Lease asset impairments recognized represent the reduction in value of the right-of-use assets associated with leases that are being exited in advance of the contractual lease expiration. Impairments are measured using a discounted cash flow methodology, which is considered a Level 3 valuation. Impairments of long-lived tangible assets reflect locations where the associated land and building are either owned or leased. The fair values of owned sites were determined using estimated sales prices from appraisals and broker opinions less estimated costs to sell with adjustments upon final disposition. The fair values of owned assets in leased sites (e.g., leasehold improvements) were determined using a discounted cash flow approach, based on the revised estimated useful lives of the related assets. Both measurement methodologies are considered Level 3 valuations. Impairment adjustments recognized upon disposition of a location are considered Level 2 valuations. Fixed asset and leased asset impairments were immaterial for the three and six months ended June 30, 2024. For the three and six months ended June 30, 2023, FHN recognized $1 million of leased asset impairments for both periods. Fixed asset impairments were immaterial for both periods in 2023. Level 3 Measurements The following table provides information regarding the unobservable inputs utilized in determining the fair value of Level 3 recurring and nonrecurring measurements as of June 30, 2024 and December 31, 2023: UNOBSERVABLE INPUTS USED IN LEVEL 3 FAIR VALUE MEASUREMENTS (Dollars in millions) Values Utilized Level 3 Class Fair Value at June 30, 2024 Valuation Techniques Unobservable Input Range Weighted Average (c) Trading securities - SBA interest-only strips $ 16 Discounted cash flow Constant prepayment rate 14% - 20% 15% Bond equivalent yield 10% - 19% 18% Loans held for sale - residential real estate $ 15 Discounted cash flow Prepayment speeds - First mortgage 2% - 6% 3% Foreclosure losses 64% - 65% 65% Loss severity trends - First mortgage 0% - 2% of UPB 1% Derivative liabilities, other $ 18 Discounted cash flow Visa covered litigation resolution amount $1.8 billion - $2.8 billion $2.5 billion Probability of resolution scenarios 10% - 20% 18% Time until resolution 6 - 36 months 25 months Loans and leases (a) $ 308 Appraisals from comparable properties Marketability adjustments for specific properties 0% - 25% of appraisal NM Other collateral valuations Borrowing base certificates liquidation adjustment 25% - 50% of gross value NM Financial Statements liquidation adjustment 50% - 100% of reported value NM Auction appraisals marketability adjustment 0% - 10% of reported value NM OREO (b) $ 4 Appraisals from comparable properties Adjustment for value changes since appraisal 0% - 10% of appraisal NM NM - Not meaningful (a) Represents carrying value of loans for which adjustments are required to be based on the appraised value of the collateral less estimated costs to sell. Write-downs on these loans are recognized as part of provision for credit losses. (b) Represents the fair value of foreclosed properties that were measured subsequent to their initial classification as OREO. Balance excludes OREO related to government-insured mortgages. (c) Weighted averages are determined by the relative fair value of the instruments or the relative contribution to an instrument's fair value. (Dollars in millions) Values Utilized Level 3 Class Fair Value at December 31, 2023 Valuation Techniques Unobservable Input Range Weighted Average (c) Trading securities - SBA interest-only strips $ 13 Discounted cash flow Constant prepayment rate 14% - 15% 14% Bond equivalent yield 18% - 21% 18% Loans held for sale - residential real estate $ 26 Discounted cash flow Prepayment speeds - First mortgage 2% - 7% 3% Foreclosure losses 64% - 68% 65% Loss severity trends - First mortgage 0% - 3% of UPB 2% Derivative liabilities, other $ 23 Discounted cash flow Visa covered litigation resolution amount $5.7 billion - $6.7 billion $6.3 billion Probability of resolution scenarios 10% - 25% 18% Time until resolution 6 - 36 months 24 months Loans and leases (a) $ 245 Appraisals from comparable properties Marketability adjustments for specific properties 0% - 25% of appraisal NM Other collateral valuations Borrowing base certificates liquidation adjustment 25% - 50% of gross value NM Financial Statements liquidation adjustment 50% - 100% of reported value NM Auction appraisals marketability adjustment 0% - 10% of reported value NM OREO (b) $ 4 Appraisals from comparable properties Adjustment for value changes since appraisal 0% - 10% of appraisal NM Other assets (d) $ 90 Discounted cash flow Adjustments to current sales yields for specific properties 0% - 15% adjustment to yield NM Appraisals from comparable properties Marketability adjustments for specific properties 0% - 25% of appraisal NM NM - Not meaningful (a) Represents carrying value of loans for which adjustments are required to be based on the appraised value of the collateral less estimated costs to sell. Write-downs on these loans are recognized as part of provision for credit losses. (b) Represents the fair value of foreclosed properties that were measured subsequent to their initial classification as OREO. Balance excludes OREO related to government-insured mortgages. (c) Weighted averages are determined by the relative fair value of the instruments or the relative contribution to an instrument's fair value. (d) Represents tax credit investments accounted for under the equity method. Trading Securities - SBA interest-only strips Increases (decreases) in estimated prepayment rates and bond equivalent yields negatively (positively) affect the value of SBA interest-only strips. Management additionally considers whether the loans underlying related SBA interest-only strips are delinquent, in default or prepaying, and adjusts the fair value down 20 - 100% depending on the length of time in default. Loans held for sale Foreclosure losses and prepayment rates are significant unobservable inputs used in the fair value measurement of FHN’s residential real estate loans held for sale. Loss severity trends are also assessed to evaluate the reasonableness of fair value estimates resulting from discounted cash flows methodologies as well as to estimate fair value for newly repurchased loans and loans that are near foreclosure. Significant increases (decreases) in any of these inputs in isolation would result in significantly lower (higher) fair value measurements. All observable and unobservable inputs are re-assessed quarterly. Increases (decreases) in estimated prepayment rates and bond equivalent yields negatively (positively) affect the value of unguaranteed interests in SBA loans. Unguaranteed interest in SBA loans held for sale are carried at less than the outstanding balance due to credit risk estimates. Credit risk adjustments may be reduced if prepayment is likely or as consistent payment history is realized. Management also considers other factors such as delinquency or default and adjusts the fair value accordingly. Derivative liabilities In conjunction with pre-2020 sales of Visa Class B shares, FHN and the purchasers entered into derivative transactions whereby FHN will make, or receive, cash payments whenever the conversion ratio of the Visa Class B shares into Visa Class A shares is adjusted. FHN uses a discounted cash flow methodology in order to estimate the fair value of FHN’s derivative liabilities associated with its prior sales of Visa Class B shares. The methodology includes estimation of both the resolution amount for Visa’s Covered Litigation matters as well as the length of time until the resolution occurs. Significant increases (decreases) in either of these inputs in isolation would result in significantly higher (lower) fair value measurements for the derivative liabilities. Additionally, FHN performs a probability weighted multiple resolution scenario to calculate the estimated fair value of these derivative liabilities. Assignment of higher (lower) probabilities to the larger potential resolution scenarios would result in an increase (decrease) in the estimated fair value of the derivative liabilities. Since this estimation process requires application of judgment in developing significant unobservable inputs used to determine the possible outcomes and the probability weighting assigned to each scenario, these derivatives have been classified within Level 3 in fair value measurements disclosures. Loans and leases and Other Real Estate Owned Collateral-dependent loans and OREO are primarily valued using appraisals based on sales of comparable properties in the same or similar markets. Other collateral (receivables, inventory, equipment, etc.) is valued through borrowing base certificates, financial statements and/or auction valuations. These valuations are discounted based on the quality of reporting, knowledge of the marketability/collectability of the collateral and historical disposition rates. Other assets – tax credit investments Prior to 2024, the estimated fair value of tax credit investments accounted for under the equity method was generally determined in relation to the yield (i.e., future tax credits to be received) an acquirer of these investments expected in relation to the yields experienced on current new issue and/or secondary market transactions. Thus, as tax credits were recognized, the future yield to a market participant was reduced, resulting in consistent impairment of the individual investments. Individual investments were reviewed for impairment quarterly, which included the consideration of additional marketability discounts related to specific investments which typically included consideration of the underlying property’s appraised value. Fair Value Option FHN previously elected the fair value option on a prospective basis for substantially all types of mortgage loans originated for sale purposes except for mortgage origination operations which utilize the platform acquired from CBF. FHN determined that the election reduces certain timing differences and better matches changes in the value of such loans with changes in the value of derivatives and forward delivery commitments used as economic hedges for these assets at the time of election. Repurchased loans relating to mortgage banking operations conducted prior to the IBKC merger are recognized within loans held for sale at fair value at the time of repurchase, which includes consideration of the credit status of the loans and the estimated liquidation value. FHN has elected to continue recognition of these loans at fair value in periods subsequent to reacquisition. Due to the credit-distressed nature of the vast majority of repurchased loans and the related loss severities experienced upon repurchase, FHN believes that the fair value election provides a more timely recognition of changes in value for these loans that occur subsequent to repurchase. Absent the fair value election, these loans would be subject to valuation at the LOCOM value, which would prevent subsequent values from exceeding the initial fair value, determined at the time of repurchase, but would require recognition of subsequent declines in value. Thus, the fair value election provides for a more timely recognition of any potential future recoveries in asset values while not affecting the requirement to recognize subsequent declines in value. The following table reflects the differences between the fair value carrying amount of residential real estate loans held for sale measured at fair value in accordance with management’s election and the aggregate unpaid principal amount FHN is contractually entitled to receive at maturity. DIFFERENCES BETWEEN FAIR VALUE CARRYING AMOUNTS AND CONTRACTUAL AMOUNTS OF RESIDENTIAL REAL ESTATE LOANS REPORTED AT FAIR VALUE June 30, 2024 (Dollars in millions) Fair value Aggregate Fair value carrying amount Residential real estate loans held for sale reported at fair value: Total loans $ 117 $ 121 $ (4) Nonaccrual loans 3 5 (2) Loans 90 days or more past due and still accruing 1 1 — December 31, 2023 (Dollars in millions) Fair value Aggregate Fair value carrying amount Residential real estate loans held for sale reported at fair value: Total loans $ 68 $ 73 $ (5) Nonaccrual loans 2 5 (3) Loans 90 days or more past due and still accruing 1 1 — Assets and liabilities accounted for under the fair value election are initially measured at fair value with subsequent changes in fair value recognized in earnings. Such changes in the fair value of assets and liabilities for which FHN elected the fair value option are included in current period earnings with classification in the income statement line item reflected in the following table: CHANGES IN FAIR VALUE RECOGNIZED IN NET INCOME Three Months Ended Six Months Ended (Dollars in millions) 2024 2023 2024 2023 Changes in fair value included in net income: Mortgage banking noninterest income Loans held for sale $ 1 $ — $ 1 $ 1 For the three and six months ended June 30, 2024 and 2023, the amount for residential real estate loans held for sale included an insignificant amount of gains in pre-tax earnings that are attributable to changes in instrument-specific credit risk. The portion of the fair value adjustments related to credit risk was determined based on estimated default rates and estimated loss severities. Interest income on residential real estate loans held for sale measured at fair value is calculated based on the note rate of the loan and is recorded in the interest income section of the Consolidated Statements of Income as interest on loans held for sale. Determination of Fair Value Fair values are based on the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. The following describes the assumptions and methodologies used to estimate the fair value of financial instruments recorded at fair value in the Consolidated Balance Sheets and for estimating the fair value of financial instruments for which fair value is disclosed. Short-term financial assets Federal funds sold, securities purchased under agreements to resell, and interest-bearing deposits with other financial institutions and the Federal Reserve are carried at historical cost. The carrying amount is a reasonable estimate of fair value because of the relatively short time between the origination of the instrument and its expected realization. Trading securities and trading liabilities Trading securities and trading liabilities are recognized at fair value through current earnings. Trading inventory held for broker-dealer operations is included in trading securities and trading liabilities. Broker-dealer long positions are valued at bid price in the bid-ask spread. Short positions are valued at the ask price. Inventory positions are valued using observable inputs including current market transactions, benchmark yields, credit spreads, and consensus prepayment speeds. Trading loans are valued using observable inputs including current market transactions, swap rates, mortgage rates, and consensus prepayment speeds. Trading securities - SBA interest-only strips Interest-only strips are valued at fair value based on an income approach using an internal valuation model. The internal valuation model includes assumptions regarding projections of future cash flows, prepayment rates, default rates and interest-only strip terms. These securities bear the risk of loan prepayment or default that may result in FHN not recovering all or a portion of its recorded investment. When appropriate, valuations are adjusted for various factors including default or prepayment status of the underlying SBA loans. Because of the inherent uncertainty of valuation, those estimated values may be higher or lower than the values that would have been used had a ready market for the securities existed, and may change in the near term. Securities available for sale and held to maturity Valuations of debt securities are performed using observable inputs obtained from market transactions in similar securities. Typical inputs include benchmark yields, consensus prepayment speeds, and credit spreads. Trades from similar securities and broker quotes are used to support these valuations. Loans held for sale FHN determines the fair value of loans held for sale using either current transaction prices or discounted cash flow models. Fair values are determined using current transaction prices and/or values on similar assets when available, including committed bids for specific loans or loan portfolios. Uncommitted bids may be adjusted based on other available market information. Fair value of residential real estate loans held for sale determined using a discounted cash flow model incorporates both observable and unobservable inputs. Inputs in the discounted cash flow model include current mortgage rates for similar products, estimated prepayment rates, foreclosure losses, and various loan performance measures (delinquency, LTV, credit score). Adjustments for delinquency and other differences in loan characteristics are typically reflected in the model’s discount rates. Loss severity trends and the value of underlying collateral are also considered in assessing the appropriate fair value for severely delinquent loans and loans in foreclosure. The valuation of HELOCs also incorporates estimated cancellation rates for loans expected to become delinquent. Non-mortgage consumer loans held for sale are valued using committed bids for specific loans or loan portfolios or current market pricing for similar assets with adjustments for differences in credit standing (delinquency, historical default rates for similar loans), yield, collateral values and prepayment rates. If pricing for similar assets is not available, a discounted cash flow methodology is utilized, which incorporates all of these factors into an estimate of investor required yield for the discount rate. FHN utilizes quoted market prices of similar instruments or broker and dealer quotations to value the SBA and USDA guaranteed loans. FHN values SBA-unguaranteed interests in loans held for sale based on individual loan characteristics, such as industry type and pay history which generally follows an income approach. Furthermore, these valuations are adjusted for changes in prepayment estimates and are reduced due to restrictions on trading. The fair value of other non-residential real estate loans held for sale is approximated by their carrying values based on current transaction values. Mortgage loans held for investment at fair value option The fair value of mortgage loans held for investment at fair value option is determined by a third party using a discounted cash flow model using various assumptions about future loan performance (constant prepayment rate, constant default rate and loss severity trends) and market discount rates. Loans held for investment The fair values of mortgage loans are estimated using an exit price methodology that is based on present values using the interest rate that would be charged for a similar loan to a borrower with similar risk, weighted for varying maturity dates and adjusted for a liquidity discount based on the estimated time period to complete a sale transaction with a market participant. Other loans and leases are valued based on present values using the interest rate that would be charged for a similar instrument to a borrower with similar risk, applicable to each category of instruments, and adjusted for a liquidity discount based on the estimated time period to complete a sale transaction with a market participant. For loans measured using the estimated fair value of collateral less costs to sell, fair value is estimated using appraisals of the collateral. Collateral values are monitored and additional write-downs are recognized if it is determined that the estimated collateral values have declined further. Estimated costs to sell are based on current amounts of disposal costs for similar assets. Carrying value is considered to reflect fair value for these loans. Derivative assets and liabilities The fair value for forwards and futures contracts is based on current transactions involving identical securities. Futures contracts are exchange-traded and thus have no credit risk factor assigned as the risk of non-performance is limited to the clearinghouse used. Valuations of other derivatives (primarily interest rate contracts) are based on inputs observed in active markets for similar instruments. Typical inputs include benchmark yields, option volatility and option skew. Centrally cleared derivatives are discounted using SOFR as required by clearinghouses. In measuring the fair value of these derivative assets and liabilities, FHN has elected to consider credit risk based on the net exposure to individual counterparties. Credit risk is mitigated for these instruments through the use of mutual margining and master netting agreements as well as collateral posting requirements. For derivative contracts with daily cash margin requirements that are considered settlements, the daily margin amount is netted within derivative assets or liabilities. Any remaining credit risk related to interest rate derivatives is considered in determining fair value through evaluation of additional factors such as client loan grades and debt ratings. Foreign currency related derivatives also utilize observable exchange rates in the determination of fair value. The determination of fair value for FHN’s derivative liabilities associated with its prior sales of Visa Class B shares are classified within Level 3 in the fair value measurements disclosure as previously discussed in the unobservable inputs discussion. The fair value of risk participations is determined in reference to the fair value of the related derivative contract between the borrower and the lead bank in the participation structure, which is determined consistent with the valuation process discussed above. This value is adjusted for the pro rata portion of the reference derivative’s notional value and an assessment of credit risk for the referenced borrower. OREO OREO primarily consists of properties that have been acquired in satisfaction of debt. These properties are carried at the lower of the outstanding loan amount or estimated fair value less estimated costs to sell the real estate. Estimated fair value is determined using appraised values with subsequent adjustments for deterioration in values that are not reflected in the most recent appraisal. Other assets For disclosure purposes, other assets consist of tax credit investments, FRB and FHLB Stock, deferred compensation mutual funds and equity investments (including other mutual funds) with readily determinable fair values. For periods prior to 2024, tax credit investments accounted for under the equ

Pay vs Performance Disclosure

Pay vs Performance Disclosure - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Pay vs Performance Disclosure
Net Income (Loss) Attributable to Parent	$ 199	$ 325	$ 391	$ 576

Insider Trading Arrangements

Insider Trading Arrangements	3 Months Ended
	Jun. 30, 2024
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false

Basis of Presentation and Acc_2

Basis of Presentation and Accounting Policies (Policies)	6 Months Ended
	Jun. 30, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Accounting	The accompanying unaudited consolidated financial statements have been prepared in accordance with GAAP for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all information and notes necessary for complete financial statements in accordance with GAAP. In the opinion of management, the accompanying unaudited consolidated financial statements contain all significant adjustments, consisting of normal and recurring items, considered necessary for fair presentation. These interim financial statements should be read in conjunction with FHN's audited consolidated financial statements and notes in FHN's Annual Report on Form 10-K for the year ended December 31, 2023. Operating results for the interim period are not necessarily indicative of the results that may be expected for the full year. All significant intercompany balances and transactions have been eliminated in consolidation. Certain amounts reported in prior years have been reclassified to conform to the current period presentation. See the Glossary of Acronyms and Terms included in this Report for terms used herein.
Accounting Changes With Extended Transition Periods and Accounting Changes Issued But Not Currently Effective	Accounting Changes With Extended Transition Periods In March 2020, the FASB issued ASU 2020-04, “Facilitation of the Effects of Reference Rate Reform on Financial Reporting” which provides several optional expedients and exceptions to ease the potential burden in accounting for (or recognizing the effects of) reference rate reform on financial reporting. The provisions of ASU 2020-04 primarily affect 1) contract modifications (e.g., loans, leases, debt, and derivatives) made in anticipation that a reference rate (e.g., LIBOR) will be discontinued and 2) the application of hedge accounting for existing relationships affected by those modifications. The provisions of ASU 2020-04 were effective upon release and apply only to contracts, hedging relationships, and other transactions that reference LIBOR or another reference rate expected to be discontinued because of reference rate reform. Including the adoption of ASU 2022-06 (discussed below), the expedients and exceptions provided by ASU 2020-04 do not apply to contract modifications made and hedging relationships entered into or evaluated after December 31, 2024, except for hedging relationships existing as of December 31, 2024, that an entity has elected certain optional expedients for and that are retained through the end of the hedging relationship. FHN identified contracts affected by reference rate reform, developed modification plans for those contracts and implemented those modifications before the last quotation of LIBOR on June 30, 2023. FHN elected to utilize the optional expedients and exceptions provided by ASU 2020-04 for contract modifications that immediately converted the reference rate within each contract. FHN also elected that revisions to contractual fallback provisions, including modifications in accordance with the provisions of Regulation ZZ, did not require evaluation for modification accounting. Additionally, FHN elected that the revisions to derivative contracts implemented by central clearinghouses to convert centrally cleared derivative contracts from LIBOR to SOFR plus an appropriate spread adjustment were not considered changes requiring assessment for modification accounting. During the transition period, for cash flow hedges that reference 1-Month USD LIBOR, FHN applied expedients related to 1) the assumption of probability of cash flows when reference rates are changed on hedged items 2) avoiding dedesignation when critical terms (i.e., reference rates) change and 3) the allowed assumption of shared risk exposure for hedged items. Additionally, for its cash flow hedges that reference 1-Month Term SOFR, FHN applied expedients related to 1) the allowed assumption of shared risk exposure for hedged items and 2) multiple allowed assumptions of conformity between hedged items and the hedging instrument when assessing effectiveness. FHN continued to utilize these expedients and exceptions through the final cash flows affected by the quotation of LIBOR. In accordance with the provisions of ASU 2020-04, effective immediately after the end of the transition period for its cash flow hedges (i.e., no more cash flows were affected by LIBOR), FHN elected that the cessation of effectiveness assessments under the transition guidance and subsequent initiation of hedge effectiveness assessments under ASC 815 did not require dedesignation of the hedge relationships. In December 2022, the FASB issued ASU 2022-06, "Deferral of the Sunset Date of Topic 848" which extends the transition window for ASU 2020-04 from December 31, 2022 to December 31, 2024, consistent with key USD LIBOR tenors continuing to be published through June 30, 2023. In January 2021, the FASB issued ASU 2021-01, "Scope" to expand the scope of ASU 2020-04 to apply to certain contract modifications that were implemented in October 2020 by derivative clearinghouses for the use of the Secured Overnight Funding Rate (SOFR) in discounting, margining and price alignment for centrally cleared derivatives, including derivatives utilized in hedging relationships. ASU 2021-01 also applies to derivative contracts affected by the change in discounting convention regardless of whether they are centrally cleared (i.e., bilateral contracts can also be modified) and regardless of whether they reference LIBOR. ASU 2021-01 was effective immediately upon issuance with retroactive application permitted. FHN elected to retroactively apply the provisions of ASU 2021-01 because FHN's centrally cleared derivatives were affected by the change in discounting convention and because FHN has other bilateral derivative contracts that may be modified to conform to the use of SOFR for discounting. Adoption did not have a significant effect on FHN's reported financial condition or results of operations. Summary of Accounting Changes ASU 2023-02 In March 2023, the FASB issued ASU 2023-02, “Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method” which permits investors to elect to account for their tax equity investments, regardless of the tax credit program from which the income tax credits are received, using the proportional amortization method if certain conditions are met. The proportional amortization method results in the cost of the investment being amortized in proportion to the income tax credits and other income tax benefits received, with the amortization of the investment and the income tax credits being presented net in the income statement as a component of income tax provision (benefit). Prior to ASU 2023-02, the proportional amortization method was only available to qualifying low income housing equity investments. An investor is required to make an accounting policy election to apply the proportional amortization method on a tax-credit-program-by-tax-credit-program basis. An investor that applies the proportional amortization method to qualifying tax equity investments must account for the receipt of the investment tax credits using the flow-through method, even if the entity applies the deferral method for other investment tax credits received. ASU 2023-02 also requires specific disclosures that must be applied to all investments that generate income tax credits and other income tax benefits from a tax credit program for which the entity has elected to apply the proportional amortization method. ASU 2023-02 was effective for fiscal years beginning after December 15, 2023, including interim periods within those fiscal years. Adoption of ASU 2023-02 is applied on either a modified retrospective (cumulative catch up) or a retrospective (restatement of prior years) basis. FHN has assessed the applicability of ASU 2023-02 to its tax credit program equity investments, determined that its New Markets Tax Credit and Historic Tax Credit programs qualified, and made the proportional method election for them. The use of the proportional amortization method continued for FHN's Low-Income Housing Tax Credits program. Upon adoption of ASU 2023-02, FHN recognized a cumulative effect adjustment that increased retained earnings by $8 million, net of tax, on January 1, 2024. The adoption of ASU 2023-02 resulted in a revision to FHN’s accounting policy for equity investments in tax credit programs. FHN’s election to utilize the deferral method for investments that generate Investment Tax Credits is now made subsequent to the determination of whether a tax credit program will apply the proportional amortization method. This includes both solar and non-qualifying historic tax credit investments. Under the deferral approach the investment tax credits are recorded as an offset to the related investment on the balance sheet. Credit amounts are recognized in earnings over the life of the investment within the same income or expense accounts as used for the investment. Accounting Changes Issued But Not Currently Effective ASU 2023-07 In November 2023, the FASB issued ASU 2023-07, "Improvements to Reportable Segment Disclosures" that requires public entities to provide disclosures of significant segment expenses and other segment items on an annual and interim basis and to provide in interim periods all disclosures about a reportable segment's profit or loss and assets that are currently required annually. The ASU requires a public entity to disclose, for each reportable segment, the significant expense categories and amounts that are regularly provided to the chief operating decision-maker (CODM) and included in each reported measure of a segment's profit or loss. ASU 2023-07 also requires disclosure of the title and position of the CODM and an explanation of how the CODM uses the reported measure(s) of segment profit or loss in assessing segment performance and deciding how to allocate resources. ASU 2023-07 is effective for fiscal years beginning after December 15, 2023 and for interim periods beginning after December 15, 2024. Early adoption is permitted. The guidance is applied retrospectively to all periods presented in the financial statements, unless it is impracticable. FHN will adopt ASU 2023-07 as of December 31, 2024 and is currently assessing the effect on its reportable segment disclosures. ASU 2023-09 In December 2023, the FASB issued ASU 2023-09, "Improvements to Income Tax Disclosures" to enhance transparency and decision usefulness of income tax disclosures. The provisions of this ASU require disaggregated information about a reporting entity's effective tax rate reconciliation in both percentages and reporting currency amounts. Certain categories of reconciling items are required by the ASU with additional categories required if a specified quantitative threshold is met. Reporting entities are also required to provide a qualitative discussion of the primary state and local jurisdictions for income taxes and the type of reconciling categories. ASU 2023-09 also requires disaggregation of income taxes paid by jurisdiction. For public business entities, ASU 2023-09 is effective for annual periods beginning after December 31, 2024. The guidance will be applied on a prospective basis with the option to apply the standard retrospectively. Early adoption is permitted. FHN is currently assessing the impact of adopting ASU 2023-09 on its income tax disclosures. SEC Final Rule In March 2024, the SEC adopted final rules, “The Enhancement and Standardization of Climate-Related Disclosures for Investors” (the “Climate Disclosures Rules”) to require registrants to disclose certain climate-related information in registration statements and annual reports. Information required for inclusion within the footnotes to the financial statements for severe weather events and other natural conditions includes 1) income statement effects before insurance recoveries above 1% of pre-tax income/loss, 2) balance sheet effects above 1% of shareholders’ equity, and 3) certain carbon offsets and renewable energy credits. Qualitative discussion is also required for material impacts on financial estimates and assumptions that are due to severe weather events and other natural conditions or disclosed climate-related targets or transition plans.
Determination of Fair Value	FHN groups its assets and liabilities measured at fair value in three levels, based on the markets in which the assets and liabilities are traded and the reliability of the assumptions used to determine fair value. This hierarchy requires FHN to maximize the use of observable market data, when available, and to minimize the use of unobservable inputs when determining fair value. Each fair value measurement is placed into the proper level based on the lowest level of significant input. These levels are: • Level 1 —Valuation is based upon quoted prices for identical instruments traded in active markets. • Level 2 —Valuation is based upon quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active, and model-based valuation techniques for which all significant assumptions are observable in the market. • Level 3 —Valuation is generated from model-based techniques that use significant assumptions not observable in the market. These unobservable assumptions reflect management’s estimates of assumptions that market participants would use in pricing the asset or liability. Valuation techniques include use of option pricing models, discounted cash flow models, and similar techniques. Nonrecurring Fair Value Measurements Trading Securities - SBA interest-only strips Increases (decreases) in estimated prepayment rates and bond equivalent yields negatively (positively) affect the value of SBA interest-only strips. Management additionally considers whether the loans underlying related SBA interest-only strips are delinquent, in default or prepaying, and adjusts the fair value down 20 - 100% depending on the length of time in default. Loans held for sale Foreclosure losses and prepayment rates are significant unobservable inputs used in the fair value measurement of FHN’s residential real estate loans held for sale. Loss severity trends are also assessed to evaluate the reasonableness of fair value estimates resulting from discounted cash flows methodologies as well as to estimate fair value for newly repurchased loans and loans that are near foreclosure. Significant increases (decreases) in any of these inputs in isolation would result in significantly lower (higher) fair value measurements. All observable and unobservable inputs are re-assessed quarterly. Increases (decreases) in estimated prepayment rates and bond equivalent yields negatively (positively) affect the value of unguaranteed interests in SBA loans. Unguaranteed interest in SBA loans held for sale are carried at less than the outstanding balance due to credit risk estimates. Credit risk adjustments may be reduced if prepayment is likely or as consistent payment history is realized. Management also considers other factors such as delinquency or default and adjusts the fair value accordingly. Derivative liabilities In conjunction with pre-2020 sales of Visa Class B shares, FHN and the purchasers entered into derivative transactions whereby FHN will make, or receive, cash payments whenever the conversion ratio of the Visa Class B shares into Visa Class A shares is adjusted. FHN uses a discounted cash flow methodology in order to estimate the fair value of FHN’s derivative liabilities associated with its prior sales of Visa Class B shares. The methodology includes estimation of both the resolution amount for Visa’s Covered Litigation matters as well as the length of time until the resolution occurs. Significant increases (decreases) in either of these inputs in isolation would result in significantly higher (lower) fair value measurements for the derivative liabilities. Additionally, FHN performs a probability weighted multiple resolution scenario to calculate the estimated fair value of these derivative liabilities. Assignment of higher (lower) probabilities to the larger potential resolution scenarios would result in an increase (decrease) in the estimated fair value of the derivative liabilities. Since this estimation process requires application of judgment in developing significant unobservable inputs used to determine the possible outcomes and the probability weighting assigned to each scenario, these derivatives have been classified within Level 3 in fair value measurements disclosures. Loans and leases and Other Real Estate Owned Collateral-dependent loans and OREO are primarily valued using appraisals based on sales of comparable properties in the same or similar markets. Other collateral (receivables, inventory, equipment, etc.) is valued through borrowing base certificates, financial statements and/or auction valuations. These valuations are discounted based on the quality of reporting, knowledge of the marketability/collectability of the collateral and historical disposition rates. Other assets – tax credit investments Prior to 2024, the estimated fair value of tax credit investments accounted for under the equity method was generally determined in relation to the yield (i.e., future tax credits to be received) an acquirer of these investments expected in relation to the yields experienced on current new issue and/or secondary market transactions. Thus, as tax credits were recognized, the future yield to a market participant was reduced, resulting in consistent impairment of the individual investments. Individual investments were reviewed for impairment quarterly, which included the consideration of additional marketability discounts related to specific investments which typically included consideration of the underlying property’s appraised value. Fair Value Option FHN previously elected the fair value option on a prospective basis for substantially all types of mortgage loans originated for sale purposes except for mortgage origination operations which utilize the platform acquired from CBF. FHN determined that the election reduces certain timing differences and better matches changes in the value of such loans with changes in the value of derivatives and forward delivery commitments used as economic hedges for these assets at the time of election. Repurchased loans relating to mortgage banking operations conducted prior to the IBKC merger are recognized within loans held for sale at fair value at the time of repurchase, which includes consideration of the credit status of the loans and the estimated liquidation value. FHN has elected to continue recognition of these loans at fair value in periods subsequent to reacquisition. Due to the credit-distressed nature of the vast majority of repurchased loans and the related loss severities experienced upon repurchase, FHN believes that the fair value election provides a more timely recognition of changes in value for these loans that occur subsequent to repurchase. Absent the fair value election, these loans would be subject to valuation at the LOCOM value, which would prevent subsequent values from exceeding the initial fair value, determined at the time of repurchase, but would require recognition of subsequent declines in value. Thus, the fair value election provides for a more timely recognition of any potential future recoveries in asset values while not affecting the requirement to recognize subsequent declines in value. Determination of Fair Value Fair values are based on the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. The following describes the assumptions and methodologies used to estimate the fair value of financial instruments recorded at fair value in the Consolidated Balance Sheets and for estimating the fair value of financial instruments for which fair value is disclosed. Short-term financial assets Federal funds sold, securities purchased under agreements to resell, and interest-bearing deposits with other financial institutions and the Federal Reserve are carried at historical cost. The carrying amount is a reasonable estimate of fair value because of the relatively short time between the origination of the instrument and its expected realization. Trading securities and trading liabilities Trading securities and trading liabilities are recognized at fair value through current earnings. Trading inventory held for broker-dealer operations is included in trading securities and trading liabilities. Broker-dealer long positions are valued at bid price in the bid-ask spread. Short positions are valued at the ask price. Inventory positions are valued using observable inputs including current market transactions, benchmark yields, credit spreads, and consensus prepayment speeds. Trading loans are valued using observable inputs including current market transactions, swap rates, mortgage rates, and consensus prepayment speeds. Trading securities - SBA interest-only strips Interest-only strips are valued at fair value based on an income approach using an internal valuation model. The internal valuation model includes assumptions regarding projections of future cash flows, prepayment rates, default rates and interest-only strip terms. These securities bear the risk of loan prepayment or default that may result in FHN not recovering all or a portion of its recorded investment. When appropriate, valuations are adjusted for various factors including default or prepayment status of the underlying SBA loans. Because of the inherent uncertainty of valuation, those estimated values may be higher or lower than the values that would have been used had a ready market for the securities existed, and may change in the near term. Securities available for sale and held to maturity Valuations of debt securities are performed using observable inputs obtained from market transactions in similar securities. Typical inputs include benchmark yields, consensus prepayment speeds, and credit spreads. Trades from similar securities and broker quotes are used to support these valuations. Loans held for sale FHN determines the fair value of loans held for sale using either current transaction prices or discounted cash flow models. Fair values are determined using current transaction prices and/or values on similar assets when available, including committed bids for specific loans or loan portfolios. Uncommitted bids may be adjusted based on other available market information. Fair value of residential real estate loans held for sale determined using a discounted cash flow model incorporates both observable and unobservable inputs. Inputs in the discounted cash flow model include current mortgage rates for similar products, estimated prepayment rates, foreclosure losses, and various loan performance measures (delinquency, LTV, credit score). Adjustments for delinquency and other differences in loan characteristics are typically reflected in the model’s discount rates. Loss severity trends and the value of underlying collateral are also considered in assessing the appropriate fair value for severely delinquent loans and loans in foreclosure. The valuation of HELOCs also incorporates estimated cancellation rates for loans expected to become delinquent. Non-mortgage consumer loans held for sale are valued using committed bids for specific loans or loan portfolios or current market pricing for similar assets with adjustments for differences in credit standing (delinquency, historical default rates for similar loans), yield, collateral values and prepayment rates. If pricing for similar assets is not available, a discounted cash flow methodology is utilized, which incorporates all of these factors into an estimate of investor required yield for the discount rate. FHN utilizes quoted market prices of similar instruments or broker and dealer quotations to value the SBA and USDA guaranteed loans. FHN values SBA-unguaranteed interests in loans held for sale based on individual loan characteristics, such as industry type and pay history which generally follows an income approach. Furthermore, these valuations are adjusted for changes in prepayment estimates and are reduced due to restrictions on trading. The fair value of other non-residential real estate loans held for sale is approximated by their carrying values based on current transaction values. Mortgage loans held for investment at fair value option The fair value of mortgage loans held for investment at fair value option is determined by a third party using a discounted cash flow model using various assumptions about future loan performance (constant prepayment rate, constant default rate and loss severity trends) and market discount rates. Loans held for investment The fair values of mortgage loans are estimated using an exit price methodology that is based on present values using the interest rate that would be charged for a similar loan to a borrower with similar risk, weighted for varying maturity dates and adjusted for a liquidity discount based on the estimated time period to complete a sale transaction with a market participant. Other loans and leases are valued based on present values using the interest rate that would be charged for a similar instrument to a borrower with similar risk, applicable to each category of instruments, and adjusted for a liquidity discount based on the estimated time period to complete a sale transaction with a market participant. For loans measured using the estimated fair value of collateral less costs to sell, fair value is estimated using appraisals of the collateral. Collateral values are monitored and additional write-downs are recognized if it is determined that the estimated collateral values have declined further. Estimated costs to sell are based on current amounts of disposal costs for similar assets. Carrying value is considered to reflect fair value for these loans. Derivative assets and liabilities The fair value for forwards and futures contracts is based on current transactions involving identical securities. Futures contracts are exchange-traded and thus have no credit risk factor assigned as the risk of non-performance is limited to the clearinghouse used. Valuations of other derivatives (primarily interest rate contracts) are based on inputs observed in active markets for similar instruments. Typical inputs include benchmark yields, option volatility and option skew. Centrally cleared derivatives are discounted using SOFR as required by clearinghouses. In measuring the fair value of these derivative assets and liabilities, FHN has elected to consider credit risk based on the net exposure to individual counterparties. Credit risk is mitigated for these instruments through the use of mutual margining and master netting agreements as well as collateral posting requirements. For derivative contracts with daily cash margin requirements that are considered settlements, the daily margin amount is netted within derivative assets or liabilities. Any remaining credit risk related to interest rate derivatives is considered in determining fair value through evaluation of additional factors such as client loan grades and debt ratings. Foreign currency related derivatives also utilize observable exchange rates in the determination of fair value. The determination of fair value for FHN’s derivative liabilities associated with its prior sales of Visa Class B shares are classified within Level 3 in the fair value measurements disclosure as previously discussed in the unobservable inputs discussion. The fair value of risk participations is determined in reference to the fair value of the related derivative contract between the borrower and the lead bank in the participation structure, which is determined consistent with the valuation process discussed above. This value is adjusted for the pro rata portion of the reference derivative’s notional value and an assessment of credit risk for the referenced borrower. OREO OREO primarily consists of properties that have been acquired in satisfaction of debt. These properties are carried at the lower of the outstanding loan amount or estimated fair value less estimated costs to sell the real estate. Estimated fair value is determined using appraised values with subsequent adjustments for deterioration in values that are not reflected in the most recent appraisal. Other assets For disclosure purposes, other assets consist of tax credit investments, FRB and FHLB Stock, deferred compensation mutual funds and equity investments (including other mutual funds) with readily determinable fair values. For periods prior to 2024, tax credit investments accounted for under the equity method were written down to estimated fair value quarterly based on the estimated value of the associated tax credits which incorporated estimates of required yield for hypothetical investors. Subsequent to 2023, the fair value of tax credit investments is estimated using recent transaction information with adjustments for differences in individual investments. Deferred compensation mutual funds are recognized at fair value, which is based on quoted prices in active markets. Investments in the stock of the Federal Reserve Bank and Federal Home Loan Banks are recognized at historical cost in the Consolidated Balance Sheets which is considered to approximate fair value. Investments in mutual funds are measured at the funds’ reported closing net asset values. Investments in equity securities are valued using quoted market prices when available. Defined maturity deposits The fair value of these deposits is estimated by discounting future cash flows to their present value. Future cash flows are discounted by using the current market rates of similar instruments applicable to the remaining maturity. For disclosure purposes, defined maturity deposits include all time deposits. Short-term financial liabilities The fair value of federal funds purchased, securities sold under agreements to repurchase, and other short-term borrowings are approximated by the book value. The carrying amount is a reasonable estimate of fair value because of the relatively short time between the origination of the instrument and its expected realization. Loan commitments Fair values of these commitments are based on fees charged to enter into similar agreements taking into account the remaining terms of the agreements and the counterparties’ credit standing. Other commitments Fair values of these commitments are based on fees charged to enter into similar agreements. The following fair value estimates are determined as of a specific point in time utilizing various assumptions and estimates. The use of assumptions and various valuation techniques, as well as the absence of secondary markets for certain financial instruments, reduces the comparability of fair value disclosures between financial institutions. Due to market illiquidity, the fair values for loans and leases, loans held for sale, and term borrowings as of June 30, 2024 and December 31, 2023, involve the use of significant internally-developed pricing assumptions for certain components of these line items. The assumptions and valuations utilized for this disclosure are considered to reflect inputs that market participants would use in transactions involving these instruments as of the measurement date. The valuations of legacy assets, particularly consumer loans and TRUPS loans within the Corporate segment, are influenced by changes in economic conditions since origination and risk perceptions of the financial sector. These considerations affect the estimate of a potential acquirer’s cost of capital and cash flow volatility assumptions from these assets and the resulting fair value measurements may depart significantly from FHN’s internal estimates of the intrinsic value of these assets. Assets and liabilities that are not financial instruments have not been included in the following table such as the value of long-term relationships with deposit and trust clients, premises and equipment, goodwill and other intangibles, deferred taxes, and certain other assets and other liabilities. Additionally, these measurements are solely for financial instruments as of the measurement date and do not consider the earnings potential of our various business lines. Accordingly, the total of the fair value amounts does not represent, and should not be construed to represent, the underlying value of FHN.

Investment Securities (Tables)

Investment Securities (Tables)	6 Months Ended
	Jun. 30, 2024
Marketable Securities [Abstract]
Schedule of FHN's Investment Securities	The following tables summarize FHN’s investment securities as of June 30, 2024 and December 31, 2023: INVESTMENT SECURITIES AT JUNE 30, 2024 June 30, 2024 (Dollars in millions) Amortized Gross Gross Fair Securities available for sale: Government agency issued MBS $ 4,852 $ 1 $ (622) $ 4,231 Government agency issued CMO 2,374 — (354) 2,020 Other U.S. government agencies 1,282 — (164) 1,118 States and municipalities 608 1 (54) 555 Total securities available for sale (a) $ 9,116 $ 2 $ (1,194) $ 7,924 Securities held to maturity: Government agency issued MBS $ 828 $ — $ (113) $ 715 Government agency issued CMO 469 — (76) 393 Total securities held to maturity (a) $ 1,297 $ — $ (189) $ 1,108 (a) Includes $6.9 billion of securities available for sale and $1.3 billion of securities held to maturity pledged to secure public deposits, securities sold under agreements to repurchase, and for other purposes. INVESTMENT SECURITIES AT DECEMBER 31, 2023 December 31, 2023 (Dollars in millions) Amortized Gross Gross Fair Securities available for sale: Government agency issued MBS $ 5,061 $ 2 $ (579) $ 4,484 Government agency issued CMO 2,487 — (341) 2,146 Other U.S. government agencies 1,321 2 (151) 1,172 States and municipalities 627 3 (41) 589 Total securities available for sale (a) $ 9,496 $ 7 $ (1,112) $ 8,391 Securities held to maturity: Government agency issued MBS $ 852 $ — $ (96) $ 756 Government agency issued CMO 471 — (66) 405 Total securities held to maturity (a) $ 1,323 $ — $ (162) $ 1,161 (a) Includes $7.6 billion of securities available for sale and $1.3 billion of securities held to maturity pledged to secure public deposits, securities sold under agreements to repurchase, and for other purposes.
Schedule of Amortized Cost and Fair Value by Contractual Maturity	The amortized cost and fair value by contractual maturity for the debt securities portfolio as of June 30, 2024 is provided below: DEBT SECURITIES PORTFOLIO MATURITIES Held to Maturity Available for Sale (Dollars in millions) Amortized Fair Amortized Fair Within 1 year $ — $ — $ 44 $ 44 After 1 year through 5 years — — 137 127 After 5 years through 10 years — — 369 332 After 10 years — — 1,340 1,170 Subtotal — — 1,890 1,673 Government agency issued MBS and CMO (a) 1,297 1,108 7,226 6,251 Total $ 1,297 $ 1,108 $ 9,116 $ 7,924 (a) Expected maturities will differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties.
Schedule of Investments within the Available for Sale Portfolio that had Unrealized Losses	The following tables provide information on investments within the available-for-sale portfolio that had unrealized losses as of June 30, 2024 and December 31, 2023: AFS INVESTMENT SECURITIES WITH UNREALIZED LOSSES As of June 30, 2024 Less than 12 months 12 months or longer Total (Dollars in millions) Fair Unrealized Fair Unrealized Fair Unrealized Government agency issued MBS $ 83 $ (1) $ 4,102 $ (621) $ 4,185 $ (622) Government agency issued CMO 28 — 1,992 (354) 2,020 (354) Other U.S. government agencies 104 (1) 971 (164) 1,075 (165) States and municipalities 33 (1) 452 (52) 485 (53) Total $ 248 $ (3) $ 7,517 $ (1,191) $ 7,765 $ (1,194) As of December 31, 2023 Less than 12 months 12 months or longer Total (Dollars in millions) Fair Unrealized Fair Unrealized Fair Unrealized Government agency issued MBS $ 140 $ (2) $ 4,231 $ (577) $ 4,371 $ (579) Government agency issued CMO 32 — 2,098 (341) 2,130 (341) Other U.S. government agencies 114 (2) 905 (149) 1,019 (151) States and municipalities 14 — 465 (41) 479 (41) Total $ 300 $ (4) $ 7,699 $ (1,108) $ 7,999 $ (1,112)

Loans and Leases (Tables)

Loans and Leases (Tables)	6 Months Ended
	Jun. 30, 2024
Receivables [Abstract]
Schedule of Loans by Portfolio Segment	The following table provides the amortized cost basis of loans and leases by portfolio segment and class as of June 30, 2024 and December 31, 2023, excluding accrued interest of $294 million and $287 million, respectively, which is included in other assets in the Consolidated Balance Sheets. LOANS AND LEASES BY PORTFOLIO SEGMENT (Dollars in millions) June 30, 2024 December 31, 2023 Commercial: Commercial and industrial (a) (b) $ 30,518 $ 30,609 Loans to mortgage companies 2,934 2,024 Total commercial, financial, and industrial 33,452 32,633 Commercial real estate 14,669 14,216 Consumer: HELOC 2,122 2,219 Real estate installment loans 11,787 11,431 Total consumer real estate 13,909 13,650 Credit card and other (c) 751 793 Loans and leases $ 62,781 $ 61,292 Allowance for loan and lease losses (821) (773) Net loans and leases $ 61,960 $ 60,519 (a) Includes equipment financing leases of $1.3 billion and $1.2 billion for June 30, 2024 and December 31, 2023, respectively. (b) Includes PPP loans fully guaranteed by the SBA of $19 million and $29 million as of June 30, 2024 and December 31, 2023, respectively. (c) Includes $190 million and $180 million of commercial credit card balances as of June 30, 2024 and December 31, 2023, respectively.
Schedule of Financing Receivable Credit Quality Indicators	The following tables provide the amortized cost basis of the commercial loan portfolio by year of origination and credit quality indicator as of June 30, 2024 and December 31, 2023: C&I PORTFOLIO June 30, 2024 (Dollars in millions) 2024 2023 2022 2021 2020 Prior to 2020 LMC (a) Revolving Revolving Total Credit Quality Indicator: Pass (PD grades 1 through 12) (b) $ 1,623 $ 3,772 $ 5,184 $ 3,139 $ 1,446 $ 4,569 $ 2,934 $ 8,963 $ 278 $ 31,908 Special Mention (PD grade 13) 45 133 71 65 18 149 — 361 28 870 Substandard, Doubtful, or Loss (PD grades 14,15, and 16) 1 48 108 110 25 173 — 188 21 674 Total C&I loans $ 1,669 $ 3,953 $ 5,363 $ 3,314 $ 1,489 $ 4,891 $ 2,934 $ 9,512 $ 327 $ 33,452 December 31, 2023 (Dollars in millions) 2023 2022 2021 2020 2019 Prior to 2019 LMC (a) Revolving Revolving Total Credit Quality Indicator: Pass (PD grades 1 through 12) (b) $ 4,008 $ 5,637 $ 3,506 $ 1,636 $ 1,665 $ 3,448 $ 2,019 $ 9,087 $ 327 $ 31,333 Special Mention (PD grade 13) 75 60 64 56 101 57 — 186 — 599 Substandard, Doubtful, or Loss (PD grades 14,15, and 16) 41 135 94 51 39 100 5 187 49 701 Total C&I loans $ 4,124 $ 5,832 $ 3,664 $ 1,743 $ 1,805 $ 3,605 $ 2,024 $ 9,460 $ 376 $ 32,633 (a) LMC includes non-revolving commercial lines of credit to qualified mortgage companies primarily for the temporary warehousing of eligible mortgage loans prior to the borrower's sale of those mortgage loans to third-party investors. The loans are of short duration with maturities less than one year. (b) Balances include PPP loans. CRE PORTFOLIO June 30, 2024 (Dollars in millions) 2024 2023 2022 2021 2020 Prior to 2020 Revolving Revolving Loans Converted to Term Loans Total Credit Quality Indicator: Pass (PD grades 1 through 12) $ 288 $ 1,046 $ 3,580 $ 3,470 $ 1,071 $ 3,635 $ 356 $ — $ 13,446 Special Mention (PD grade 13) — 1 209 94 31 134 — — 469 Substandard, Doubtful, or Loss (PD grades 14,15, and 16) — 3 67 114 112 452 6 — 754 Total CRE loans $ 288 $ 1,050 $ 3,856 $ 3,678 $ 1,214 $ 4,221 $ 362 $ — $ 14,669 December 31, 2023 (Dollars in millions) 2023 2022 2021 2020 2019 Prior to 2019 Revolving Revolving Loans Converted to Term Loans Total Credit Quality Indicator: Pass (PD grades 1 through 12) $ 853 $ 3,473 $ 3,518 $ 1,162 $ 1,216 $ 2,853 $ 393 $ 18 $ 13,486 Special Mention (PD grade 13) 5 1 129 86 175 82 — — 478 Substandard, Doubtful, or Loss (PD grades 14,15, and 16) — 2 5 11 175 59 — — 252 Total CRE loans $ 858 $ 3,476 $ 3,652 $ 1,259 $ 1,566 $ 2,994 $ 393 $ 18 $ 14,216 The following table reflects the amortized cost basis by year of origination and refreshed FICO scores for consumer real estate loans as of June 30, 2024 and December 31, 2023. Within consumer real estate, classes include HELOC and real estate installment loans. HELOCs are loans which during their draw period are classified as revolving loans. Once the draw period ends and the loan enters its repayment period, the loan converts to a term loan and is classified as a revolving loan converted to a term loan. All loans classified in the following tables as revolving loans or revolving loans converted to term loans are HELOCs. Real estate installment loans are originated as fixed term loans and are classified below in their vintage year. All loans in the following tables classified in a vintage year are real estate installment loans. CONSUMER REAL ESTATE PORTFOLIO June 30, 2024 (Dollars in millions) 2024 2023 2022 2021 2020 Prior to 2020 Revolving Revolving Total FICO score 740 or greater $ 557 $ 1,550 $ 2,063 $ 1,657 $ 706 $ 1,670 $ 1,448 $ 45 $ 9,696 FICO score 720-739 80 203 282 223 105 296 192 14 1,395 FICO score 700-719 57 151 223 185 75 264 155 16 1,126 FICO score 660-699 70 166 188 108 79 318 162 17 1,108 FICO score 620-659 5 11 17 23 21 132 34 5 248 FICO score less than 620 6 19 19 19 18 221 24 10 336 Total $ 775 $ 2,100 $ 2,792 $ 2,215 $ 1,004 $ 2,901 $ 2,015 $ 107 $ 13,909 December 31, 2023 (Dollars in millions) 2023 2022 2021 2020 2019 Prior to 2019 Revolving Revolving Loans Converted to Term Loans Total FICO score 740 or greater $ 1,572 $ 2,099 $ 1,720 $ 730 $ 465 $ 1,332 $ 1,522 $ 50 $ 9,490 FICO score 720-739 205 286 227 107 88 230 192 15 1,350 FICO score 700-719 154 232 193 81 52 224 159 17 1,112 FICO score 660-699 170 198 113 83 53 290 168 18 1,093 FICO score 620-659 11 20 23 22 36 106 36 7 261 FICO score less than 620 18 19 15 20 12 225 24 11 344 Total $ 2,130 $ 2,854 $ 2,291 $ 1,043 $ 706 $ 2,407 $ 2,101 $ 118 $ 13,650 The following tables reflect the amortized cost basis by year of origination and refreshed FICO scores for credit card and other loans as of June 30, 2024 and December 31, 2023. CREDIT CARD & OTHER PORTFOLIO June 30, 2024 (Dollars in millions) 2024 2023 2022 2021 2020 Prior to 2020 Revolving Revolving Total FICO score 740 or greater $ 13 $ 34 $ 18 $ 7 $ 3 $ 25 $ 191 $ 7 $ 298 FICO score 720-739 8 5 2 1 1 5 21 1 44 FICO score 700-719 1 4 3 1 1 4 22 1 37 FICO score 660-699 1 3 2 1 — 7 21 — 35 FICO score 620-659 1 1 — — — 2 6 — 10 FICO score less than 620 4 13 8 6 7 109 179 1 327 Total $ 28 $ 60 $ 33 $ 16 $ 12 $ 152 $ 440 $ 10 $ 751 December 31, 2023 (Dollars in millions) 2023 2022 2021 2020 2019 Prior to 2019 Revolving Revolving Loans Converted to Term Loans Total FICO score 740 or greater $ 52 $ 26 $ 10 $ 5 $ 3 $ 27 $ 207 $ 5 $ 335 FICO score 720-739 5 3 1 1 1 5 24 1 41 FICO score 700-719 5 4 1 1 1 4 25 1 42 FICO score 660-699 4 3 1 1 1 8 23 — 41 FICO score 620-659 2 1 1 — — 3 7 — 14 FICO score less than 620 12 9 6 8 13 103 168 1 320 Total $ 80 $ 46 $ 20 $ 16 $ 19 $ 150 $ 454 $ 8 $ 793
Schedule of Accruing and Non-Accruing Loans by Class	The following table reflects accruing and non-accruing loans and leases by class on June 30, 2024 and December 31, 2023: ACCRUING & NON-ACCRUING LOANS AND LEASES June 30, 2024 Accruing Non-Accruing (Dollars in millions) Current 30-89 90+ Total Current 30-89 90+ Total Total Commercial, financial, and industrial: C&I (a) $ 30,318 $ 32 $ 1 $ 30,351 $ 87 $ 3 $ 77 $ 167 $ 30,518 Loans to mortgage companies 2,934 — — 2,934 — — — — 2,934 Total commercial, financial, and industrial 33,252 32 1 33,285 87 3 77 167 33,452 Commercial real estate: CRE (b) 14,404 4 — 14,408 137 29 95 261 14,669 Consumer real estate: HELOC (c) 2,068 9 3 2,080 29 4 9 42 2,122 Real estate installment loans (d) 11,645 40 — 11,685 38 13 51 102 11,787 Total consumer real estate 13,713 49 3 13,765 67 17 60 144 13,909 Credit card and other: Credit card 276 4 2 282 — — — — 282 Other 465 2 — 467 1 — 1 2 469 Total credit card and other 741 6 2 749 1 — 1 2 751 Total loans and leases $ 62,110 $ 91 $ 6 $ 62,207 $ 292 $ 49 $ 233 $ 574 $ 62,781 December 31, 2023 Accruing Non-Accruing (Dollars in millions) Current 30-89 90+ Total Current 30-89 90+ Total Total Commercial, financial, and industrial: C&I (a) $ 30,398 $ 31 $ 1 $ 30,430 $ 108 $ 18 $ 53 $ 179 $ 30,609 Loans to mortgage companies 2,018 1 — 2,019 5 — — 5 2,024 Total commercial, financial, and industrial 32,416 32 1 32,449 113 18 53 184 32,633 Commercial real estate: CRE (b) 14,072 8 — 14,080 41 — 95 136 14,216 Consumer real estate: HELOC (c) 2,158 11 4 2,173 30 6 10 46 2,219 Real estate installment loans (d) 11,295 29 13 11,337 43 6 45 94 11,431 Total consumer real estate 13,453 40 17 13,510 73 12 55 140 13,650 Credit card and other: Credit card 271 3 3 277 — — — — 277 Other 512 2 — 514 1 — 1 2 516 Total credit card and other 783 5 3 791 1 — 1 2 793 Total loans and leases $ 60,724 $ 85 $ 21 $ 60,830 $ 228 $ 30 $ 204 $ 462 $ 61,292 (a) $158 million and $178 million of C&I loans are nonaccrual loans that have been specifically reviewed for impairment with no related allowance in 2024 and 2023, respectively. (b) $255 million and $129 million of CRE loans are nonaccrual loans that have been specifically reviewed for impairment with no related allowance in 2024 and 2023, respectively. (c) $4 million of HELOC loans are nonaccrual loans that have been specifically reviewed for impairment with no related allowance in both 2024 and 2023. (d) $10 million of real estate installment loans are nonaccrual loans that have been specifically reviewed for impairment with no related allowance in both 2024 and 2023.
Schedule of Financing Receivables Modified	The following tables present the amortized cost basis at the end of the reporting period of loans modified to borrowers experiencing financial difficulty, disaggregated by class of financing receivable and type of modification made, as well as the financial effect of the modifications made as of June 30, 2024: LOAN MODIFICATIONS TO BORROWERS EXPERIENCING FINANCIAL DIFFICULTY Interest Rate Reduction June 30, 2024 June 30, 2023 (Dollars in millions) Balance % of Total Class Financial Effect Balance % of Total Class Financial Effect Consumer real estate (a) $ — — % Reduced weighted-average contractual interest rate from 9.87% to 6.52% $ 1 — % Reduced weighted-average contractual interest rate from 8.70% to 3.60% Credit card and other (a) — — Reduced weighted-average contractual interest rate from 5.77% to 4.41% — — Reduced weighted-average contractual interest rate from 14.70% to 0.00% Total $ — — % $ 1 — % (a) Balance less than $1 million. Term Extension June 30, 2024 June 30, 2023 (Dollars in millions) Balance % of Total Class Financial Effect Balance % of Total Class Financial Effect C&I $ 95 0.3 % Added an estimated weighted-average 1.2 years to the life of loans, which reduced monthly payment amounts for the borrowers $ 73 0.2 % Added an estimated weighted-average 1 year to the life of loans, which reduced monthly payment amounts for the borrowers CRE 28 0.2 Added an estimated weighted-average 2.4 years to the life of loans, which reduced monthly payment amounts for the borrowers 46 0.3 Added an estimated weighted-average 1 year to the life of loans, which reduced monthly payment amounts for the borrowers Consumer real estate (a) — — Added a weighted-average 22 years to the life of loans, which reduced monthly payment amounts for the borrowers 1 — Added a weighted-average 13 years to the life of loans, which reduced monthly payment amounts for the borrowers Total $ 123 0.2 % $ 120 0.2 % (a) Balance less than $1 million. Principal Forgiveness June 30, 2024 June 30, 2023 (Dollars in millions) Balance % of Total Class Financial Effect Balance % of Total Class Financial Effect Consumer real estate (a) $ — — % Less than $1 million of the principal of consumer real estate loan was legally discharged in bankruptcy during the period and the borrowers have not re-affirmed the debt as of period end $ 1 — % $1 million of the principal of consumer loans was legally discharged in bankruptcy during the period and the borrowers have not re-affirmed the debt as of period end. Less than $1 million of this principal continues to experience payments in accordance with the original loan terms Total $ — — % $ 1 — % (a) Balance less than $1 million. Payment Deferrals June 30, 2024 June 30, 2023 (Dollars in millions) Balance % of Total Class Financial Effect Balance % of Total Class Financial Effect Consumer real estate $ — — % N/A $ 3 — % Payment deferral for 11 months, with a balloon payment at the end of the term Total $ — — % $ 3 — % Combination - Term Extension and Interest Rate Reduction June 30, 2024 June 30, 2023 (Dollars in millions) Balance % of Total Class Financial Effect Balance % of Total Class Financial Effect Consumer real estate $ 3 — % Added an estimated weighted-average 10.8 years to the life of loans and reduced weighted-average contractual interest rate from 8.39% to 3.67% $ 3 — % Added a weighted-average 13.1 years to the life of loans and reduced weighted-average contractual interest rate from 5.40% to 3.90% Total $ 3 — % $ 3 — % Combination - Principal Forgiveness, Term Extension, and Payment Deferrals June 30, 2024 June 30, 2023 (Dollars in millions) Balance % of Total Class Financial Effect Balance % of Total Class Financial Effect C&I $ — — % N/A $ 16 — % Reduced the balance of the loans by $2 million and added a weighted-average 6.2 years to the life of loans Total $ — — % $ 16 — % Combination - Term Extension, Interest Rate Reduction, and Interest Forgiveness June 30, 2024 June 30, 2023 (Dollars in millions) Balance % of Total Class Financial Effect Balance % of Total Class Financial Effect C&I $ — — % N/A $ 2 — % Added a weighted-average 3.7 years to the life of loans, reduced weighted-average contractual interest rate from 11.30% to 7.50% and provided less than $1 million in interest forgiveness Total $ — — % $ 2 — % Combination - Term Extension, Interest Rate Reduction, and Interest Deferrals June 30, 2024 June 30, 2023 (Dollars in millions) Balance % of Total Class Financial Effect Balance % of Total Class Financial Effect CRE $ — — % N/A $ 17 — % Added a weighted-average 1.0 year to the life of loans, reduced weighted-average contractual interest rate from 8.70% to 8.00% and provided less than $1 million in deferred interest Total $ — — % $ 17 — %
Schedule of Financing Receivable, Performance of Modified Loan	The following table depicts the performance of loans that have been modified in the last 12 months : PERFORMANCE OF LOANS THAT HAVE BEEN MODIFIED IN THE LAST 12 MONTHS June 30, 2024 (Dollars in millions) Current 30-89 Days Past Due 90+ Days Past Due Non-Accruing C&I $ 110 $ — $ — $ 13 CRE 29 — — — Consumer Real Estate 3 — — 3 Credit Card and Other — — — — Total $ 142 $ — $ — $ 16

Allowance for Credit Losses (Ta

Allowance for Credit Losses (Tables)	6 Months Ended
	Jun. 30, 2024
Accounts, Notes, Loans and Financing Receivable, Gross, Allowance, and Net [Abstract]
Schedule of the Allowance for Loan Losses by Portfolio Segment	The following table provides a rollforward of the ALLL and the reserve for unfunded lending commitments by portfolio type for the three and six months ended June 30, 2024 and 2023: ROLLFORWARD OF ALLL & RESERVE FOR UNFUNDED LENDING COMMITMENTS (Dollars in millions) Commercial, Financial, and Industrial (a) Commercial Real Estate Consumer Real Estate Credit Card and Other Total Three Months Ended June 30, 2024 Allowance for loan and lease losses: Balance as of April 1, 2024 $ 348 $ 181 $ 231 $ 27 $ 787 Charge-offs (24) (19) (1) (5) (49) Recoveries 12 — 2 1 15 Provision for loan and lease losses 8 59 (1) 2 68 Balance as of June 30, 2024 $ 344 $ 221 $ 231 $ 25 $ 821 Reserve for remaining unfunded commitments: Balance as of April 1, 2024 $ 49 $ 18 $ 12 $ — $ 79 Provision for remaining unfunded commitments (5) (8) — — (13) Balance as of June 30, 2024 44 10 12 — 66 Allowance for credit losses as of June 30, 2024 $ 388 $ 231 $ 243 $ 25 $ 887 Three Months Ended June 30, 2023 Allowance for loan and lease losses: Balance as of April 1, 2023 $ 325 $ 150 $ 209 $ 31 $ 715 Charge-offs (19) (8) (1) (5) (33) Recoveries 5 1 3 1 10 Provision for loan and lease losses 15 16 10 4 45 Balance as of June 30, 2023 $ 326 $ 159 $ 221 $ 31 $ 737 Reserve for remaining unfunded commitments: Balance as of April 1, 2023 $ 53 $ 21 $ 11 $ — $ 85 Provision for remaining unfunded commitments 2 3 — — 5 Balance as of June 30, 2023 55 24 11 — 90 Allowance for credit losses as of June 30, 2023 $ 381 $ 183 $ 232 $ 31 $ 827 (Dollars in millions) Commercial, Financial, and Industrial (a) Commercial Real Estate Consumer Real Estate Credit Card and Other Total Six Months Ended June 30, 2024 Allowance for loan and lease losses: Balance as of January 1, 2024 $ 339 $ 172 $ 233 $ 29 $ 773 Charge-offs (52) (32) (1) (10) (95) Recoveries 14 — 4 3 21 Provision for loan and lease losses 43 81 (5) 3 122 Balance as of June 30, 2024 $ 344 $ 221 $ 231 $ 25 $ 821 Reserve for remaining unfunded commitments: Balance as of January 1, 2024 $ 49 $ 22 $ 12 $ — $ 83 Provision for remaining unfunded commitments (5) (12) — — (17) Balance as of June 30, 2024 44 10 12 — 66 Allowance for credit losses as of June 30, 2024 $ 388 $ 231 $ 243 $ 25 $ 887 Six Months Ended June 30, 2023 Allowance for loan and lease losses: Balance as of January 1, 2023 $ 308 $ 146 $ 200 $ 31 $ 685 Adoption of ASU 2022-02 1 — (7) — (6) Charge-offs (33) (10) (1) (10) (54) Recoveries 7 1 5 2 15 Provision for loan and lease losses 43 22 24 8 97 Balance as of June 30, 2023 $ 326 $ 159 $ 221 $ 31 $ 737 Reserve for remaining unfunded commitments: Balance as of January 1, 2023 $ 55 $ 22 $ 10 $ — $ 87 Provision for remaining unfunded commitments — 2 1 — 3 Balance as of June 30, 2023 55 24 11 — 90 Allowance for credit losses as of June 30, 2023 $ 381 $ 183 $ 232 $ 31 $ 827 (a) C&I loans as of June 30, 2024 and 2023 include $19 million and $44 million in PPP loans, respectively, which due to the government guarantee and forgiveness provisions are considered to have no credit risk and therefore have no allowance for loan and lease losses.
Schedule Of Gross Charge Offs by Year of Origination	The following table presents gross charge-offs by year of origination for the six months ended June 30, 2024 and 2023: GROSS CHARGE-OFFS (Dollars in millions) 2024 2023 2022 2021 2020 Prior to 2020 Revolving Loans Total C&I $ — $ 9 $ 11 $ 20 $ 1 $ 9 $ 2 $ 52 CRE — — — — 9 23 — 32 Consumer Real Estate — — — — — 1 — 1 Credit Card and Other 4 — 1 — — 1 4 10 Total $ 4 $ 9 $ 12 $ 20 $ 10 $ 34 $ 6 $ 95 2023 2022 2021 2020 2019 Prior to 2019 Revolving Loans Total C&I $ 1 $ 5 $ 6 $ 4 $ 6 $ 10 $ 1 $ 33 CRE — — — — 2 8 — 10 Consumer Real Estate — — — — — 1 — 1 Credit Card and Other 6 — — — — 1 3 10 Total $ 7 $ 5 $ 6 $ 4 $ 8 $ 20 $ 4 $ 54

Mortgage Banking Activity (Tabl

Mortgage Banking Activity (Tables)	6 Months Ended
	Jun. 30, 2024
Mortgage Banking [Abstract]
Schedule of Residential Mortgage Loans Held For Sale	The following table summarizes activity related to residential mortgage loans held for sale as of and for the six months ended June 30, 2024 and the year ended December 31, 2023. MORTGAGE LOAN ACTIVITY (Dollars in millions) June 30, 2024 December 31, 2023 Balance at beginning of period $ 62 $ 44 Originations and purchases 485 692 Sales, net of gains (436) (674) Balance at end of period $ 111 $ 62
Schedule of Mortgage Servicing Rights	Mortgage servicing rights had the following carrying values as of the dates indicated in the table below. MORTGAGE SERVICING RIGHTS June 30, 2024 December 31, 2023 (Dollars in millions) Gross Carrying Amount Accumulated Amortization Net Carrying Amount Gross Carrying Amount Accumulated Amortization Net Carrying Amount Mortgage servicing rights $ 28 $ (8) $ 20 $ 25 $ (7) $ 18

Goodwill and Other Intangible_2

Goodwill and Other Intangible Assets (Tables)	6 Months Ended
	Jun. 30, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Goodwill by Reportable Segment	The following is a summary of goodwill by reportable segment included in the Consolidated Balance Sheets as of June 30, 2024 and December 31, 2023. GOODWILL (Dollars in millions) Regional Specialty Banking Total December 31, 2022 (a) $ 825 $ 686 $ 1,511 Additions — — — Divestitures (b) — (1) (1) December 31, 2023 $ 825 $ 685 $ 1,510 Additions — — — Divestitures — — — June 30, 2024 $ 825 $ 685 $ 1,510 (a) FHN reorganized its internal management structure and reallocated goodwill in its reportable segments effective January 1, 2024. Prior periods have been revised to reflect this reallocation. (b) Reduction in goodwill is related to the divestiture of FHN Financial Main Street Advisors assets in December 2023.
Schedule of Intangible Assets and Accumulated Amortization Included in the Consolidated Statements of Condition	The following table, which excludes fully amortized intangibles, presents other intangible assets included in the Consolidated Balance Sheets: OTHER INTANGIBLE ASSETS June 30, 2024 December 31, 2023 (Dollars in millions) Gross Carrying Accumulated Net Carrying Gross Carrying Accumulated Net Carrying Core deposit intangibles $ 368 $ (227) $ 141 $ 368 $ (208) $ 160 Client relationships 32 (17) 15 32 (16) 16 Other (a) 27 (18) 9 27 (17) 10 Total $ 427 $ (262) $ 165 $ 427 $ (241) $ 186 (a) Includes non-compete covenants and purchased credit card intangible assets. Also includes state banking licenses which are not subject to amortization.

Preferred Stock (Tables)

Preferred Stock (Tables)	6 Months Ended
	Jun. 30, 2024
Equity [Abstract]
Schedule of Stock by Class	The following table presents a summary of FHN's non-cumulative perpetual preferred stock: PREFERRED STOCK (Dollars in millions) June 30, 2024 December 31, 2023 Issuance Date Earliest Redemption Date (a) Annual Dividend Rate Dividend Payments Shares Outstanding Liquidation Amount Carrying Amount Carrying Amount Series B 7/2/2020 8/1/2025 6.625% (b) Semi-annually 8,000 $ 80 $ 77 $ 77 Series C 7/2/2020 5/1/2026 6.600% (c) Quarterly 5,750 58 59 59 Series D 7/2/2020 5/1/2024 6.100% (d) Semi-annually — — — 94 Series E 5/28/2020 10/10/2025 6.500% Quarterly 1,500 150 145 145 Series F 5/3/2021 7/10/2026 4.700% Quarterly 1,500 150 145 145 16,750 $ 438 $ 426 $ 520 (a) Denotes earliest optional redemption date. Earlier redemption is possible, at FHN's election, if certain regulatory capital events occur. (b) As a result of LIBOR transition, the fixed dividend rate will reset on August 1, 2025 to three-month CME Term SOFR plus 4.52361% (0.26161% plus 4.262%). (c) As a result of LIBOR transition, the fixed dividend rate will reset on May 1, 2026 to three-month CME Term SOFR plus 5.18161% (0.26161% plus 4.920%). (d) On May 1, 2024, FHN redeemed all outstanding shares of its Series D Preferred Stock. The fixed dividend rate was set to convert to three-month CME Term SOFR plus 4.12061% (0.26161% plus 3.859%) on May 1, 2024.

Components of Other Comprehen_2

Components of Other Comprehensive Income (Loss) (Tables)	6 Months Ended
	Jun. 30, 2024
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Schedule of Changes in Accumulated Other Comprehensive Income/(Loss)	The following table provides the changes in accumulated other comprehensive income (loss) by component, net of tax, for the three and six months ended June 30, 2024 and 2023: ACCUMULATED OTHER COMPREHENSIVE INCOME (Dollars in millions) Securities AFS Cash Flow Hedges Pension and Total Balance as of April 1, 2024 $ (891) $ (110) $ (270) $ (1,271) Net unrealized gains (losses) (10) (15) — (25) Amounts reclassified from AOCI — 13 2 15 Other comprehensive income (loss) (10) (2) 2 (10) Balance as of June 30, 2024 $ (901) $ (112) $ (268) $ (1,281) (Dollars in millions) Securities AFS Cash Flow Hedges Pension and Total Balance as of January 1, 2024 $ (836) $ (80) $ (272) $ (1,188) Net unrealized gains (losses) (65) (58) — (123) Amounts reclassified from AOCI — 26 4 30 Other comprehensive income (loss) (65) (32) 4 (93) Balance as of June 30, 2024 $ (901) $ (112) $ (268) $ (1,281) (Dollars in millions) Securities AFS Cash Flow Hedges Pension and Total Balance as of April 1, 2023 $ (859) $ (83) $ (266) $ (1,208) Net unrealized gains (losses) (105) (59) (2) (166) Amounts reclassified from AOCI — 13 2 15 Other comprehensive income (loss) (105) (46) — (151) Balance as of June 30, 2023 $ (964) $ (129) $ (266) $ (1,359) (Dollars in millions) Securities AFS Cash Flow Hedges Pension and Total Balance as of January 1, 2023 $ (973) $ (127) $ (268) $ (1,368) Net unrealized gains (losses) 9 (26) (2) (19) Amounts reclassified from AOCI — 24 4 28 Other comprehensive income (loss) 9 (2) 2 9 Balance as of June 30, 2023 $ (964) $ (129) $ (266) $ (1,359)
Schedule of Reclassifications from AOCI	Reclassifications from AOCI, and related tax effects, were as follows: RECLASSIFICATIONS FROM AOCI (Dollars in millions) Three Months Ended Six Months Ended Details about AOCI 2024 2023 2024 2023 Affected line item in the statement where net Cash Flow Hedges: Realized (gains) losses on cash flow hedges $ 17 $ 17 $ 34 $ 32 Interest and fees on loans and leases Tax expense (benefit) (4) (4) (8) (8) Income tax expense 13 13 26 24 Pension and Postretirement Plans: Amortization of prior service cost and net actuarial (gain) loss $ 3 $ 2 $ 6 $ 5 Other expense Tax expense (benefit) (1) — (2) (1) Income tax expense 2 2 4 4 Total reclassification from AOCI $ 15 $ 15 $ 30 $ 28

Earnings Per Share (Tables)

Earnings Per Share (Tables)	6 Months Ended
	Jun. 30, 2024
Earnings Per Share [Abstract]
Schedule of Reconciliation of Earnings Per Common and Diluted Share	The computations of basic and diluted earnings per common share were as follows: EARNINGS PER SHARE COMPUTATIONS Three Months Ended Six Months Ended (Dollars in millions, except per share data; shares in thousands) 2024 2023 2024 2023 Net income $ 204 $ 329 $ 401 $ 585 Net income attributable to noncontrolling interest 5 4 10 9 Net income attributable to controlling interest 199 325 391 576 Preferred stock dividends 15 8 23 16 Net income available to common shareholders $ 184 $ 317 $ 368 $ 560 Weighted average common shares outstanding—basic 543,981 539,120 549,479 538,035 Effect of dilutive restricted stock, performance equity awards and options 3,112 3,100 3,060 4,956 Effect of dilutive convertible preferred stock (a) — 18,658 — 19,197 Weighted average common shares outstanding—diluted 547,093 560,878 552,539 562,188 Basic earnings per common share $ 0.34 $ 0.59 $ 0.67 $ 1.04 Diluted earnings per common share $ 0.34 $ 0.56 $ 0.67 $ 1.00 (a) On February 28, 2022, FHN issued $494 million of Series G Convertible Preferred Stock, which was converted into common stock on June 26, 2023, following the termination of the TD Merger Agreement. Conversion occurred at the rate of 4,000 common shares per Series G preferred share resulting in 19,742,776 additional common shares outstanding. 2023 includes the impact of the Series G preferred shares based on the final conversion rate.
Schedule of Anti-Dilutive Options and Awards	The following table presents average outstanding options and other equity awards that were excluded from the calculation of diluted earnings per share because they were either anti-dilutive (the exercise price was higher than the weighted-average market price for the period) or the performance conditions have not been met: ANTI-DILUTIVE EQUITY AWARDS Three Months Ended Six Months Ended (Shares in thousands) 2024 2023 2024 2023 Stock options excluded from the calculation of diluted EPS 1,388 1,942 1,458 — Weighted average exercise price of stock options excluded from the calculation of diluted EPS $ 16.48 $ 16.46 $ 16.59 $ 24.36 Other equity awards excluded from the calculation of diluted EPS 6,828 8,676 6,819 3,063

Retirement Plans (Tables)

Retirement Plans (Tables)	6 Months Ended
	Jun. 30, 2024
Retirement Benefits, Description [Abstract]
Schedule of Components of Net Periodic Benefit Cost	The components of net periodic benefit cost for the three and six months ended June 30 were as follows: COMPONENTS OF NET PERIODIC BENEFIT COST Three Months Ended June 30, Six Months Ended June 30, (Dollars in millions) 2024 2023 2024 2023 Components of net periodic benefit cost Interest cost $ 9 $ 8 $ 17 $ 16 Expected return on plan assets (8) (8) (16) (16) Amortization of unrecognized: Actuarial (gain) loss 3 3 6 6 Net periodic benefit cost $ 4 $ 3 $ 7 $ 6

Business Segment Information (T

Business Segment Information (Tables)	6 Months Ended
	Jun. 30, 2024
Segment Reporting [Abstract]
Schedule of Segment Financial Information	The following tables present financial information for each reportable business segment for the three and six months ended June 30, 2024 and 2023: SEGMENT FINANCIAL INFORMATION Three Months Ended June 30, 2024 (Dollars in millions) Regional Banking Specialty Banking Corporate Consolidated Net interest income (expense) $ 522 $ 158 $ (51) $ 629 Provision for credit losses 57 1 (3) 55 Noninterest income 109 64 13 186 Noninterest expense (a) 333 103 64 500 Income (loss) before income taxes 241 118 (99) 260 Income tax expense (benefit) 56 29 (29) 56 Net income (loss) $ 185 $ 89 $ (70) $ 204 Average assets $ 43,519 $ 24,592 $ 13,610 $ 81,721 Three Months Ended June 30, 2023 (Dollars in millions) Regional Banking Specialty Banking Corporate Consolidated Net interest income (expense) $ 585 $ 156 $ (111) $ 630 Provision for credit losses 36 18 (4) 50 Noninterest income (b) 106 50 244 400 Noninterest expense (a) 313 95 147 555 Income (loss) before income taxes 342 93 (10) 425 Income tax expense (benefit) 80 23 (7) 96 Net income (loss) $ 262 $ 70 $ (3) $ 329 Average assets $ 42,302 $ 23,329 $ 16,673 $ 82,304 (a) 2024 includes $3 million of restructuring costs and an FDIC special assessment of $2 million in the Corporate segment. 2023 includes a $50 million contribution to the First Horizon Foundation, $30 million in merger and integration expenses related to the TD Transaction, and $15 million in Visa derivative valuation expenses in the Corporate segment. (b) 2023 includes a $225 million gain on merger termination in the Corporate segment. Six Months Ended June 30, 2024 (Dollars in millions) Regional Banking Specialty Banking Corporate Consolidated Net interest income (expense) $ 1,054 $ 310 $ (111) $ 1,253 Provision for credit losses 86 23 (4) 105 Noninterest income 214 137 30 381 Noninterest expense (a) 657 207 151 1,015 Income (loss) before income taxes 525 217 (228) 514 Income tax expense (benefit) 122 53 (62) 113 Net income (loss) $ 403 $ 164 $ (166) $ 401 Average assets $ 43,283 $ 24,194 $ 14,005 $ 81,482 Six Months Ended June 30, 2023 (Dollars in millions) Regional Banking Specialty Banking Corporate Consolidated Net interest income (expense) $ 1,146 $ 307 $ (135) $ 1,318 Provision for credit losses 72 33 (5) 100 Noninterest income (b) 210 106 255 571 Noninterest expense (a) 626 195 212 1,033 Income (loss) before income taxes 658 185 (87) 756 Income tax expense (benefit) 154 45 (28) 171 Net income (loss) $ 504 $ 140 $ (59) $ 585 Average assets $ 41,800 $ 22,978 $ 15,804 $ 80,582 (a) 2024 includes $9 million in restructuring costs and an FDIC special assessment of $12 million in the Corporate segment. 2023 includes a $50 million contribution to the First Horizon Foundation, $51 million in merger and integration expenses related to the TD Transaction, and $15 million in Visa derivative valuation expenses in the Corporate segment. (b) 2023 includes a $225 million gain on merger termination in the Corporate Segment. The following tables reflect a disaggregation of FHN’s noninterest income by major product line and reportable segment for the three and six months ended June 30, 2024 and 2023: NONINTEREST INCOME DETAIL BY SEGMENT Three Months Ended June 30, 2024 (Dollars in millions) Regional Banking Specialty Banking Corporate Consolidated Noninterest income: Deposit transactions and cash management $ 39 $ 3 $ 2 $ 44 Fixed income (a) — 40 — 40 Brokerage, management fees and commissions 25 — — 25 Card and digital banking fees 17 1 2 20 Other service charges and fees 6 8 — 14 Trust services and investment management 12 — — 12 Mortgage banking income — 10 — 10 Securities gains (losses), net (b) — — 1 1 Other income (c) 10 2 8 20 Total noninterest income $ 109 $ 64 $ 13 $ 186 Three Months Ended June 30, 2023 (Dollars in millions) Regional Banking Specialty Banking Corporate Consolidated Noninterest income: Deposit transactions and cash management $ 40 $ 3 $ 2 $ 45 Fixed income (a) — 31 (1) 30 Brokerage, management fees and commissions 22 — — 22 Card and digital banking fees 18 1 2 21 Other service charges and fees 6 8 — 14 Trust services and investment management 12 — — 12 Mortgage banking income — 6 — 6 Gain on merger termination — — 225 225 Other income (c) 8 1 16 25 Total noninterest income $ 106 $ 50 $ 244 $ 400 (a) 2024 and 2023 each includes $9 million of underwriting, portfolio advisory, and other noninterest income in scope of ASC 606, "Revenue From Contracts With Customers." (b) Represents noninterest income excluded from the scope of ASC 606. Amount is presented for informational purposes to reconcile total noninterest income. (c) Includes letter of credit fees and insurance commissions in scope of ASC 606. Six Months Ended June 30, 2024 (Dollars in millions) Regional Banking Specialty Banking Corporate Consolidated Noninterest income: Deposit transactions and cash management $ 78 $ 6 $ 4 $ 88 Fixed income (a) — 92 — 92 Brokerage, management fees and commissions 49 — — 49 Card and digital banking fees 34 1 3 38 Other service charges and fees 12 15 — 27 Trust services and investment management 24 — — 24 Mortgage banking income — 19 — 19 Securities gains (losses), net (b) — — 1 1 Other income (c) 17 4 22 43 Total noninterest income $ 214 $ 137 $ 30 $ 381 Six Months Ended June 30, 2023 (Dollars in millions) Regional Banking Specialty Banking Corporate Consolidated Noninterest income: Deposit transactions and cash management $ 77 $ 6 $ 4 $ 87 Fixed income (a) — 70 (1) 69 Brokerage, management fees and commissions 44 — — 44 Card and digital banking fees 35 1 4 40 Other service charges and fees 13 14 — 27 Trust services and investment management 24 — — 24 Mortgage banking income — 11 — 11 Gain on merger termination — — 225 225 Securities gains (losses), net (b) — — 1 1 Other income (c) 17 4 22 43 Total noninterest income $ 210 $ 106 $ 255 $ 571 (a) 2024 and 2023 includes $20 million and $19 million, respectively, of underwriting, portfolio advisory, and other noninterest income in scope of ASC 606, "Revenue From Contracts With Customers." (b) Represents noninterest income excluded from the scope of ASC 606. Amount is presented for informational purposes to reconcile total noninterest income. (c) Includes letter of credit fees and insurance commissions in scope of ASC 606.

Variable Interest Entities (Tab

Variable Interest Entities (Tables)	6 Months Ended
	Jun. 30, 2024
Variable Interest Entities [Abstract]
Schedule of VIEs Consolidated by FHN	The following table summarizes the carrying value of assets and liabilities associated with rabbi trusts used for deferred compensation plans which are consolidated by FHN as of June 30, 2024 and December 31, 2023: CONSOLIDATED VIEs (Dollars in millions) June 30, 2024 December 31, 2023 Assets: Other assets $ 187 $ 177 Liabilities: Other liabilities $ 163 $ 150
Schedule of the Impact of Qualifying LIHTC Investments	The following table summarizes the impact to income tax expense on the Consolidated Statements of Income for the three and six months ended June 30, 2024 and 2023 for investments accounted for under the PAM. The impact of these investments is Included in other operating activities, net in the Consolidated Statements of Cash Flows. TAX CREDIT IMPACTS ON TAX EXPENSE Three Months Ended Six Months Ended (Dollars in millions) 2024 2023 2024 2023 Income tax expense (benefit): Amortization of qualifying investments $ 15 $ 13 $ 30 $ 26 Tax credits (17) (14) (33) (28) Other tax benefits related to qualifying investments (3) (3) (5) (5)
Schedule of VIEs Not Consolidated by FHN	The following tables summarize FHN’s nonconsolidated VIEs as of June 30, 2024 and December 31, 2023: NONCONSOLIDATED VIEs AT JUNE 30, 2024 (Dollars in millions) Maximum Liability Classification Type Low income housing partnerships $ 572 $ 194 (a) Other tax credit investments (b) 97 82 Other assets Small issuer trust preferred holdings (c) 171 — Loans and leases On-balance sheet trust preferred securitization 26 88 (d) Holdings of agency mortgage-backed securities (c) 7,823 — (e) Commercial loan modifications to borrowers experiencing financial difficulty (f) 193 — Loans and leases Proprietary trust preferred issuances (g) — 167 Term borrowings (a) Maximum loss exposure represents $378 million of current investments and $194 million of accrued contractual funding commitments. Accrued funding commitments represent unconditional contractual obligations for future funding events and are also recognized in other liabilities. FHN currently expects to be required to fund these accrued commitments by the end of 2024. (b) Maximum loss exposure represents the value of current investments. (c) Maximum loss exposure represents the value of current investments. A liability is not recognized as FHN is solely a holder of the trusts’ securities. (d) Includes $113 million classified as loans and leases and $2 million classified as trading securities, which are offset by $88 million classified as term borrowings. (e) Includes $275 million classified as trading securities, $1.3 billion classified as held to maturity, and $6.3 billion classified as securities available for sale. (f) Maximum loss exposure represents $193 million of current receivables with no additional contractual funding commitments on loans related to commercial loan modifications to borrowers experiencing financial difficulty. (g) No exposure to loss due to nature of FHN's involvement. NONCONSOLIDATED VIEs AT DECEMBER 31, 2023 (Dollars in millions) Maximum Liability Classification Type Low income housing partnerships $ 587 $ 223 (a) Other tax credit investments (b) 79 64 Other assets Small issuer trust preferred holdings (c) 173 — Loans and leases On-balance sheet trust preferred securitization 26 88 (d) Holdings of agency mortgage-backed securities (c) 8,402 — (e) Commercial loan modifications to borrowers experiencing financial difficulty (f) 129 — Loans and leases Proprietary trust preferred issuances (g) — 167 Term borrowings (a) Maximum loss exposure represents $364 million of current investments and $223 million of accrued contractual funding commitments. Accrued funding commitments represent unconditional contractual obligations for future funding events and are also recognized in other liabilities. FHN currently expects to be required to fund these accrued commitments by the end of 2024. (b) Maximum loss exposure represents current investments. (c) Maximum loss exposure represents the value of current investments. A liability is not recognized as FHN is solely a holder of the trusts’ securities. (d) Includes $113 million classified as loans and leases and $2 million classified as trading securities, which are offset by $88 million classified as term borrowings. (e) Includes $450 million classified as trading securities, $1.3 billion classified as held to maturity, and $6.6 billion classified as securities available for sale. (f) Maximum loss exposure represents $129 million of current receivables with no additional contractual funding commitments on loans related to commercial loan modifications to borrowers experiencing financial difficulty. (g) No exposure to loss due to nature of FHN's involvement.

Derivatives (Tables)

Derivatives (Tables)	6 Months Ended
	Jun. 30, 2024
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Derivatives Associated with Fixed Income Trading Activities	The following table summarizes derivatives associated with FHNF's trading activities as of June 30, 2024 and December 31, 2023: DERIVATIVES ASSOCIATED WITH TRADING June 30, 2024 (Dollars in millions) Notional Assets Liabilities Customer interest rate contracts $ 4,155 $ 7 $ 230 Offsetting upstream interest rate contracts 4,328 165 8 Forwards and futures purchased 1,891 3 3 Forwards and futures sold 1,949 3 2 December 31, 2023 (Dollars in millions) Notional Assets Liabilities Customer interest rate contracts $ 4,067 $ 22 $ 197 Offsetting upstream interest rate contracts 4,273 135 23 Forwards and futures purchased 777 9 — Forwards and futures sold 912 — 9
Schedule of Derivatives Associated with Interest Rate Risk Management Activities	The following table summarizes FHN’s derivatives associated with interest rate risk management activities as of June 30, 2024 and December 31, 2023: DERIVATIVES ASSOCIATED WITH INTEREST RATE RISK MANAGEMENT June 30, 2024 (Dollars in millions) Notional Assets Liabilities Customer Interest Rate Contracts Hedging Hedging Instruments and Hedged Items: Customer interest rate contracts $ 8,427 $ 7 $ 456 Offsetting upstream interest rate contracts 8,427 453 8 December 31, 2023 (Dollars in millions) Notional Assets Liabilities Customer Interest Rate Contracts Hedging Hedging Instruments and Hedged Items: Customer interest rate contracts $ 8,375 $ 21 $ 392 Offsetting upstream interest rate contracts 8,375 389 22
Schedule of Gains/(Losses) on Derivatives Associated with Interest Rate Risk Management Activities	The following table summarizes gains (losses) on FHN’s derivatives associated with interest rate risk management activities for the three and six months ended June 30, 2024 and 2023: DERIVATIVE GAINS (LOSSES) ASSOCIATED WITH INTEREST RATE RISK MANAGEMENT Three Months Ended Six Months Ended 2024 2023 2024 2023 (Dollars in millions) Gains (Losses) Gains (Losses) Gains (Losses) Gains (Losses) Customer Interest Rate Contracts Hedging Hedging Instruments and Hedged Items: Customer interest rate contracts (a) $ 9 $ (130) $ (77) $ 31 Offsetting upstream interest rate contracts (a) (9) 130 77 (31) (a) Gains (losses) included in other expense within the Consolidated Statements of Income.
Schedule of Derivative Associated with Cash Flow Hedges	The following tables summarize FHN’s derivative activities associated with cash flow hedges as of June 30, 2024 and December 31, 2023: DERIVATIVES ASSOCIATED WITH CASH FLOW HEDGES June 30, 2024 (Dollars in millions) Notional Assets Liabilities Cash Flow Hedges Hedging Instruments: Interest rate contracts $ 5,000 $ — $ 82 Hedged Items: Variability in cash flows related to debt instruments (primarily loans) N/A $ 5,000 N/A December 31, 2023 (Dollars in millions) Notional Assets Liabilities Cash Flow Hedges Hedging Instruments: Interest rate contracts $ 5,200 $ — $ 32 Hedged Items: Variability in cash flows related to debt instruments (primarily loans) N/A $ 5,200 N/A
Schedule of Gains/(Losses) on Derivatives Associated with Cash Flow Hedges	The following table summarizes gains (losses) on FHN’s derivatives associated with cash flow hedges for the three and six months ended June 30, 2024 and 2023: DERIVATIVE GAINS (LOSSES) ASSOCIATED WITH CASH FLOW HEDGES Three Months Ended Six Months Ended 2024 2023 2024 2023 (Dollars in millions) Gains (Losses) Gains (Losses) Gains (Losses) Gains (Losses) Cash Flow Hedges Hedging Instruments: Interest rate contracts (a) $ (2) $ (66) $ (41) $ (13) Gain (loss) recognized in other comprehensive income (loss) (15) (59) (58) (26) Gain (loss) reclassified from AOCI into interest income 13 13 26 24 (a) Approximately $23 million of pre-tax losses are expected to be reclassified into earnings in the next twelve months.
Schedule of Derivatives Gains/Losses Associated with Mortgage Banking Hedges	The notional and fair values of these contracts are presented in the table below. DERIVATIVES ASSOCIATED WITH MORTGAGE BANKING HEDGES June 30, 2024 (Dollars in millions) Notional Assets Liabilities Mortgage Banking Hedges Option contracts written $ 82 $ 1 $ — Forward contracts written 154 1 — December 31, 2023 (Dollars in millions) Notional Assets Liabilities Mortgage Banking Hedges Option contracts written $ 55 $ 1 $ — Forward contracts written 93 — 1 The following table summarizes gains (losses) on FHN's derivatives associated with mortgage banking activities for the three and six months ended June 30, 2024 and 2023: DERIVATIVE GAINS (LOSSES) ASSOCIATED WITH MORTGAGE BANKING HEDGES Three Months Ended Six Months Ended 2024 2023 2024 2023 (Dollars in millions) Gains (Losses) Gains (Losses) Gains (Losses) Gains (Losses) Mortgage Banking Hedges Option contracts written $ 1 $ — $ — $ 2 Forward contracts written — (2) 1 6
Schedule of Derivative Assets and Collateral Received	The following table provides details of derivative assets and collateral received as presented on the Consolidated Balance Sheets as of June 30, 2024 and December 31, 2023: DERIVATIVE ASSETS & COLLATERAL RECEIVED Gross amounts not offset in the Balance Sheets (Dollars in millions) Gross amounts Gross amounts Net amounts of Derivative Collateral Net amount Derivative assets: June 30, 2024 Interest rate derivative contracts $ 633 $ — $ 633 $ (79) $ (533) $ 21 Forward contracts 6 — 6 (3) — 3 $ 639 $ — $ 639 $ (82) $ (533) $ 24 December 31, 2023 Interest rate derivative contracts $ 567 $ — $ 567 $ (75) $ (486) $ 6 Forward contracts 9 — 9 (4) (3) 2 $ 576 $ — $ 576 $ (79) $ (489) $ 8 (a) Included in other assets on the Consolidated Balance Sheets. As of June 30, 2024 and December 31, 2023, $1 million and $1 million, respectively, of derivative assets have been excluded from these tables because they are generally not subject to master netting or similar agreements.
Schedule of Derivative Liabilities and Collateral Pledged	The following table provides details of derivative liabilities and collateral pledged as presented on the Consolidated Balance Sheets as of June 30, 2024 and December 31, 2023: DERIVATIVE LIABILITIES & COLLATERAL PLEDGED Gross amounts not offset (Dollars in millions) Gross amounts Gross amounts Net amounts of Derivative Collateral Net amount Derivative liabilities: June 30, 2024 Interest rate derivative contracts $ 784 $ — $ 784 $ (79) $ (193) $ 512 Forward contracts 5 — 5 (3) — 2 $ 789 $ — $ 789 $ (82) $ (193) $ 514 December 31, 2023 Interest rate derivative contracts $ 666 $ — $ 666 $ (75) $ (164) $ 427 Forward contracts 9 — 9 (4) (5) — $ 675 $ — $ 675 $ (79) $ (169) $ 427 (a) Included in other liabilities on the Consolidated Balance Sheets. As of June 30, 2024 and December 31, 2023, $19 million and $24 million, respectively, of derivative liabilities (primarily Visa-related derivatives) have been excluded from these tables because they are generally not subject to master netting or similar agreements.

Master Netting and Similar Ag_2

Master Netting and Similar Agreements—Repurchase, Reverse Repurchase, and Securities Borrowing Transactions (Tables)	6 Months Ended
	Jun. 30, 2024
Offsetting [Abstract]
Schedule of Securities Purchased under Agreements to Resell and Collateral Pledged by Counterparties	The following table provides details of securities purchased under agreements to resell and collateral pledged by counterparties as of June 30, 2024 and December 31, 2023: SECURITIES PURCHASED UNDER AGREEMENTS TO RESELL Gross amounts not offset in the (Dollars in millions) Gross amounts Gross amounts Net amounts of Offsetting Securities collateral Net amount Securities purchased under agreements to resell: June 30, 2024 $ 424 $ — $ 424 $ — $ (418) $ 6 December 31, 2023 519 — 519 — (516) 3
Schedule of Securities Sold under Agreements to Repurchase and Collateral Pledged by Company	The following table provides details of securities sold under agreements to repurchase and collateral pledged by FHN as of June 30, 2024 and December 31, 2023: SECURITIES SOLD UNDER AGREEMENTS TO REPURCHASE Gross amounts not offset in the (Dollars in millions) Gross amounts Gross amounts Net amounts of Offsetting Securities/ Net amount Securities sold under agreements to repurchase: June 30, 2024 $ 1,948 $ — $ 1,948 $ — $ (1,948) $ — December 31, 2023 1,921 — 1,921 — (1,921) —
Schedule of the Remaining Contractual Maturity by Collateral Type of Securities Sold under Agreements to Repurchase	The following table provides details, by collateral type, of the remaining contractual maturity of securities sold under agreements to repurchase as of June 30, 2024 and December 31, 2023: MATURITIES OF SECURITIES SOLD UNDER AGREEMENTS TO REPURCHASE June 30, 2024 (Dollars in millions) Overnight and Up to 30 Days Total Securities sold under agreements to repurchase: Government agency issued MBS $ 1,579 $ — $ 1,579 Government agency issued CMO 326 — 326 Other U.S. government agencies 43 — 43 Total securities sold under agreements to repurchase $ 1,948 $ — $ 1,948 December 31, 2023 (Dollars in millions) Overnight and Up to 30 Days Total Securities sold under agreements to repurchase: Government agency issued MBS $ 1,717 $ — $ 1,717 Government agency issued CMO 161 — 161 Other U.S. government agencies 43 — 43 Total securities sold under agreements to repurchase $ 1,921 $ — $ 1,921

Fair Value of Assets and Liab_2

Fair Value of Assets and Liabilities (Tables)	6 Months Ended
	Jun. 30, 2024
Fair Value Disclosures [Abstract]
Schedule of Assets and Liabilities Measured at Fair Value on a Recurring Basis	The following table presents the balances of assets and liabilities measured at fair value on a recurring basis as of June 30, 2024 and December 31, 2023: BALANCES OF ASSETS & LIABILITIES MEASURED AT FAIR VALUE ON A RECURRING BASIS June 30, 2024 (Dollars in millions) Level 1 Level 2 Level 3 Total Trading securities: U.S. treasuries $ — $ 12 $ — $ 12 Government agency issued MBS — 83 — 83 Government agency issued CMO — 192 — 192 Other U.S. government agencies — 116 — 116 States and municipalities — 31 — 31 Corporate and other debt — 799 — 799 Interest-only strips — — 16 16 Total trading securities — 1,233 16 1,249 Loans held for sale (elected fair value) — 102 15 117 Securities available for sale: Government agency issued MBS — 4,231 — 4,231 Government agency issued CMO — 2,020 — 2,020 Other U.S. government agencies — 1,118 — 1,118 States and municipalities — 555 — 555 Total securities available for sale — 7,924 — 7,924 Other assets: Deferred compensation mutual funds 107 — — 107 Equity, mutual funds, and other 34 — — 34 Derivatives, forwards and futures 6 — — 6 Derivatives, interest rate contracts — 634 — 634 Total other assets 147 634 — 781 Total assets $ 147 $ 9,893 $ 31 $ 10,071 Trading liabilities: U.S. treasuries $ — $ 342 $ — $ 342 Corporate and other debt — 81 — 81 Total trading liabilities — 423 — 423 Other liabilities: Derivatives, forwards and futures 5 — — 5 Derivatives, interest rate contracts — 785 — 785 Derivatives, other — — 18 18 Total other liabilities 5 785 18 808 Total liabilities $ 5 $ 1,208 $ 18 $ 1,231 December 31, 2023 (Dollars in millions) Level 1 Level 2 Level 3 Total Trading securities: U.S. treasuries $ — $ 3 $ — $ 3 Government agency issued MBS — 114 — 114 Government agency issued CMO — 336 — 336 Other U.S. government agencies — 152 — 152 States and municipalities — 17 — 17 Corporate and other debt — 777 — 777 Interest-only strips — — 13 13 Total trading securities — 1,399 13 1,412 Loans held for sale (elected fair value) — 42 26 68 Securities available for sale: Government agency issued MBS — 4,484 — 4,484 Government agency issued CMO — 2,146 — 2,146 Other U.S. government agencies — 1,172 — 1,172 States and municipalities — 589 — 589 Total securities available for sale — 8,391 — 8,391 Other assets: Deferred compensation mutual funds 102 — — 102 Equity, mutual funds, and other 34 — — 34 Derivatives, forwards and futures 9 — — 9 Derivatives, interest rate contracts — 568 — 568 Total other assets 145 568 — 713 Total assets $ 145 $ 10,400 $ 39 $ 10,584 Trading liabilities: U.S. treasuries $ — $ 426 $ — $ 426 Government agency issued MBS — 1 — 1 Corporate and other debt — 82 — 82 Total trading liabilities — 509 — 509 Other liabilities: Derivatives, forwards and futures 10 — — 10 Derivatives, interest rate contracts — 666 — 666 Derivatives, other — — 23 23 Total other liabilities 10 666 23 699 Total liabilities $ 10 $ 1,175 $ 23 $ 1,208
Schedule of Changes in Level 3 Assets and Liabilities Measured at Fair Value	The changes in Level 3 assets and liabilities measured at fair value for the three months ended June 30, 2024 and 2023 on a recurring basis are summarized as follows: CHANGES IN LEVEL 3 ASSETS & LIABILITIES MEASURED AT FAIR VALUE Three Months Ended June 30, 2024 (Dollars in millions) Interest-only strips Loans held Net Balance on April 1, 2024 $ 19 $ 14 $ (20) Total net gains (losses) included in net income (1) — — Purchases — 1 — Sales (8) — — Settlements — (1) 2 Net transfers into (out of) Level 3 6 (b) 1 — Balance on June 30, 2024 $ 16 $ 15 $ (18) Net unrealized gains (losses) included in net income $ — (c) $ — (a) $ — (d) Three Months Ended June 30, 2023 (Dollars in millions) Interest-only strips Loans held Net Balance on April 1, 2023 $ 28 $ 21 $ (21) Total net gains (losses) included in net income (3) — (15) Purchases — 1 — Sales (5) — — Settlements — — 2 Net transfers into (out of) Level 3 16 (b) — — Balance on June 30, 2023 $ 36 $ 22 $ (34) Net unrealized gains (losses) included in net income $ (2) (c) $ — (a) $ (15) (d) (a) Primarily included in mortgage banking income on the Consolidated Statements of Income. (b) Transfers into interest-only strips Level 3 measured on a recurring basis reflect movements from loans held for sale (Level 2 nonrecurring). (c) Primarily included in fixed income on the Consolidated Statements of Income. (d) Included in other expense on the Consolidated Statements of Income. The changes in Level 3 assets and liabilities measured at fair value for the six months ended June 30, 2024 and 2023 on a recurring basis are summarized as follows: CHANGES IN LEVEL 3 ASSETS & LIABILITIES MEASURED AT FAIR VALUE Six Months Ended June 30, 2024 (Dollars in millions) Interest-only strips Loans held Net Balance on January 1, 2024 $ 13 $ 26 $ (23) Total net gains (losses) included in net income (2) — — Purchases — 2 — Sales (10) (13) — Settlements — (1) 5 Net transfers into (out of) Level 3 15 (b) 1 — Balance on June 30, 2024 $ 16 $ 15 $ (18) Net unrealized gains (losses) included in net income $ (1) (c) $ — (a) $ — (d) Six Months Ended June 30, 2023 (Dollars in millions) Interest-only strips Loans held Net Balance on January 1, 2023 $ 25 $ 22 $ (27) Total net gains (losses) included in net income (6) — (15) Purchases — 2 — Sales (8) (2) — Settlements — — 8 Net transfers into (out of) Level 3 25 (b) — — Balance on June 30, 2023 $ 36 $ 22 $ (34) Net unrealized gains (losses) included in net income $ (3) (c) $ — (a) $ (15) (d) (a) Primarily included in mortgage banking income on the Consolidated Statements of Income. (b) Transfers into interest-only strips Level 3 measured on a recurring basis reflect movements from loans held for sale (Level 2 nonrecurring). (c) Primarily included in fixed income on the Consolidated Statements of Income. (d) Included in other expense on the Consolidated Statements of Income.
Schedule of Nonrecurring Fair Value Measurements	For assets measured at fair value on a nonrecurring basis which were still held on the Consolidated Balance Sheets at June 30, 2024, and December 31, 2023, respectively, the following tables provide the level of valuation assumptions used to determine each adjustment and the related carrying value. LEVEL OF VALUATION ASSUMPTIONS FOR ASSETS MEASURED AT FAIR VALUE ON A NONRECURRING BASIS Carrying value at June 30, 2024 (Dollars in millions) Level 1 Level 2 Level 3 Total Loans held for sale—SBAs and USDA $ — $ 327 $ — $ 327 Loans and leases (a) — — 308 308 OREO (b) — — 4 4 Carrying value at December 31, 2023 (Dollars in millions) Level 1 Level 2 Level 3 Total Loans held for sale—SBAs and USDA $ — $ 406 $ — $ 406 Loans and leases (a) — — 245 245 OREO (b) — — 4 4 Other assets (c) — — 90 90 (a) Represents carrying value of loans for which adjustments are required to be based on the appraised value of the collateral less estimated costs to sell. Write-downs on these loans are recognized as part of provision for credit losses. (b) Represents the fair value and related losses of foreclosed properties that were measured subsequent to their initial classification as OREO. Balance excludes OREO related to government-insured mortgages. (c) Represents tax credit investments accounted for under the equity method.
Schedule of Gains/(losses) on Nonrecurring Fair Value Measurements	For assets measured on a nonrecurring basis which were still held on the Consolidated Balance Sheets at period end, the following table provides information about the fair value adjustments recorded during the three and six months ended June 30, 2024 and 2023: FAIR VALUE ADJUSTMENTS ON ASSETS MEASURED ON A NONRECURRING BASIS Net gains (losses) Net gains (losses) (Dollars in millions) 2024 2023 2024 2023 Loans held for sale—SBAs and USDA $ (1) $ (1) $ (1) $ (2) Loans and leases (a) (31) (19) (56) (23) Other assets (b) — (1) — (1) $ (32) $ (21) $ (57) $ (26) (a) Write-downs on these loans are recognized as part of provision for credit losses. (b) Represents tax credit investments accounted for under the equity method.
Schedule of Unobservable Inputs Utilized in Determining the Fair Value of Level 3 Recurring and Non-Recurring Measurements	The following table provides information regarding the unobservable inputs utilized in determining the fair value of Level 3 recurring and nonrecurring measurements as of June 30, 2024 and December 31, 2023: UNOBSERVABLE INPUTS USED IN LEVEL 3 FAIR VALUE MEASUREMENTS (Dollars in millions) Values Utilized Level 3 Class Fair Value at June 30, 2024 Valuation Techniques Unobservable Input Range Weighted Average (c) Trading securities - SBA interest-only strips $ 16 Discounted cash flow Constant prepayment rate 14% - 20% 15% Bond equivalent yield 10% - 19% 18% Loans held for sale - residential real estate $ 15 Discounted cash flow Prepayment speeds - First mortgage 2% - 6% 3% Foreclosure losses 64% - 65% 65% Loss severity trends - First mortgage 0% - 2% of UPB 1% Derivative liabilities, other $ 18 Discounted cash flow Visa covered litigation resolution amount $1.8 billion - $2.8 billion $2.5 billion Probability of resolution scenarios 10% - 20% 18% Time until resolution 6 - 36 months 25 months Loans and leases (a) $ 308 Appraisals from comparable properties Marketability adjustments for specific properties 0% - 25% of appraisal NM Other collateral valuations Borrowing base certificates liquidation adjustment 25% - 50% of gross value NM Financial Statements liquidation adjustment 50% - 100% of reported value NM Auction appraisals marketability adjustment 0% - 10% of reported value NM OREO (b) $ 4 Appraisals from comparable properties Adjustment for value changes since appraisal 0% - 10% of appraisal NM NM - Not meaningful (a) Represents carrying value of loans for which adjustments are required to be based on the appraised value of the collateral less estimated costs to sell. Write-downs on these loans are recognized as part of provision for credit losses. (b) Represents the fair value of foreclosed properties that were measured subsequent to their initial classification as OREO. Balance excludes OREO related to government-insured mortgages. (c) Weighted averages are determined by the relative fair value of the instruments or the relative contribution to an instrument's fair value. (Dollars in millions) Values Utilized Level 3 Class Fair Value at December 31, 2023 Valuation Techniques Unobservable Input Range Weighted Average (c) Trading securities - SBA interest-only strips $ 13 Discounted cash flow Constant prepayment rate 14% - 15% 14% Bond equivalent yield 18% - 21% 18% Loans held for sale - residential real estate $ 26 Discounted cash flow Prepayment speeds - First mortgage 2% - 7% 3% Foreclosure losses 64% - 68% 65% Loss severity trends - First mortgage 0% - 3% of UPB 2% Derivative liabilities, other $ 23 Discounted cash flow Visa covered litigation resolution amount $5.7 billion - $6.7 billion $6.3 billion Probability of resolution scenarios 10% - 25% 18% Time until resolution 6 - 36 months 24 months Loans and leases (a) $ 245 Appraisals from comparable properties Marketability adjustments for specific properties 0% - 25% of appraisal NM Other collateral valuations Borrowing base certificates liquidation adjustment 25% - 50% of gross value NM Financial Statements liquidation adjustment 50% - 100% of reported value NM Auction appraisals marketability adjustment 0% - 10% of reported value NM OREO (b) $ 4 Appraisals from comparable properties Adjustment for value changes since appraisal 0% - 10% of appraisal NM Other assets (d) $ 90 Discounted cash flow Adjustments to current sales yields for specific properties 0% - 15% adjustment to yield NM Appraisals from comparable properties Marketability adjustments for specific properties 0% - 25% of appraisal NM NM - Not meaningful (a) Represents carrying value of loans for which adjustments are required to be based on the appraised value of the collateral less estimated costs to sell. Write-downs on these loans are recognized as part of provision for credit losses. (b) Represents the fair value of foreclosed properties that were measured subsequent to their initial classification as OREO. Balance excludes OREO related to government-insured mortgages. (c) Weighted averages are determined by the relative fair value of the instruments or the relative contribution to an instrument's fair value. (d) Represents tax credit investments accounted for under the equity method.
Schedule of Differences between the Fair Value Carrying Amount of Mortgages Held-for-sale and Aggregate Unpaid Principal Amount	The following table reflects the differences between the fair value carrying amount of residential real estate loans held for sale measured at fair value in accordance with management’s election and the aggregate unpaid principal amount FHN is contractually entitled to receive at maturity. DIFFERENCES BETWEEN FAIR VALUE CARRYING AMOUNTS AND CONTRACTUAL AMOUNTS OF RESIDENTIAL REAL ESTATE LOANS REPORTED AT FAIR VALUE June 30, 2024 (Dollars in millions) Fair value Aggregate Fair value carrying amount Residential real estate loans held for sale reported at fair value: Total loans $ 117 $ 121 $ (4) Nonaccrual loans 3 5 (2) Loans 90 days or more past due and still accruing 1 1 — December 31, 2023 (Dollars in millions) Fair value Aggregate Fair value carrying amount Residential real estate loans held for sale reported at fair value: Total loans $ 68 $ 73 $ (5) Nonaccrual loans 2 5 (3) Loans 90 days or more past due and still accruing 1 1 —
Schedule of Changes In Fair Value of Assets and Liabilities which Fair Value Option Included in Current Period Earnings	Assets and liabilities accounted for under the fair value election are initially measured at fair value with subsequent changes in fair value recognized in earnings. Such changes in the fair value of assets and liabilities for which FHN elected the fair value option are included in current period earnings with classification in the income statement line item reflected in the following table: CHANGES IN FAIR VALUE RECOGNIZED IN NET INCOME Three Months Ended Six Months Ended (Dollars in millions) 2024 2023 2024 2023 Changes in fair value included in net income: Mortgage banking noninterest income Loans held for sale $ 1 $ — $ 1 $ 1
Schedule of Book Value and Estimated Fair Value of Financial Instruments	The following table summarizes the book value and estimated fair value of financial instruments recorded in the Consolidated Balance Sheets as of June 30, 2024 and December 31, 2023: BOOK VALUE AND ESTIMATED FAIR VALUE OF FINANCIAL INSTRUMENTS June 30, 2024 Book Fair Value (Dollars in millions) Level 1 Level 2 Level 3 Total Assets: Loans and leases, net of allowance for loan and lease losses Commercial: Commercial, financial and industrial $ 33,108 $ — $ — $ 32,427 $ 32,427 Commercial real estate 14,448 — — 14,214 14,214 Consumer: Consumer real estate 13,678 — — 13,004 13,004 Credit card and other 726 — — 717 717 Total loans and leases, net of allowance for loan and lease losses 61,960 — — 60,362 60,362 Short-term financial assets: Interest-bearing deposits with banks 1,452 1,452 — — 1,452 Federal funds sold 63 — 63 — 63 Securities purchased under agreements to resell 424 — 424 — 424 Total short-term financial assets 1,939 1,452 487 — 1,939 Trading securities (a) 1,249 — 1,233 16 1,249 Loans held for sale: Mortgage loans (elected fair value) (a) 117 — 102 15 117 USDA & SBA loans - LOCOM 327 — 327 — 327 Mortgage loans - LOCOM 27 — — 27 27 Total loans held for sale 471 — 429 42 471 Securities available for sale (a) 7,924 — 7,924 — 7,924 Securities held to maturity 1,297 — 1,108 — 1,108 Derivative assets (a) 640 6 634 — 640 Other assets: Tax credit investments 668 — — 656 656 Deferred compensation mutual funds 107 107 — — 107 Equity, mutual funds, and other (b) 323 34 — 289 323 Total other assets 1,098 141 — 945 1,086 Total assets $ 76,578 $ 1,599 $ 11,815 $ 61,365 $ 74,779 Liabilities: Defined maturity deposits $ 7,163 $ — $ 7,205 $ — $ 7,205 Trading liabilities (a) 423 — 423 — 423 Short-term financial liabilities: Federal funds purchased 624 — 624 — 624 Securities sold under agreements to repurchase 1,948 — 1,948 — 1,948 Other short-term borrowings 1,943 — 1,943 — 1,943 Total short-term financial liabilities 4,515 — 4,515 — 4,515 Term borrowings: Real estate investment trust-preferred 47 — — 47 47 Term borrowings—new market tax credit investment 83 — — 78 78 Secured borrowings 9 — — 9 9 Junior subordinated debentures 151 — — 150 150 Other long-term borrowings 885 — 847 — 847 Total term borrowings 1,175 — 847 284 1,131 Derivative liabilities (a) 808 5 785 18 808 Total liabilities $ 14,084 $ 5 $ 13,775 $ 302 $ 14,082 (a) Classes are detailed in the recurring and nonrecurring measurement tables. (b) Level 1 primarily consists of mutual funds with readily determinable fair values. Level 3 includes restricted investments in FHLB-Cincinnati stock of $86 million and FRB stock of $203 million. December 31, 2023 Book Fair Value (Dollars in millions) Level 1 Level 2 Level 3 Total Assets: Loans and leases, net of allowance for loan and lease losses Commercial: Commercial, financial and industrial $ 32,294 $ — $ — $ 31,673 $ 31,673 Commercial real estate 14,044 — — 13,831 13,831 Consumer: Consumer real estate 13,417 — — 12,605 12,605 Credit card and other 764 — — 742 742 Total loans and leases, net of allowance for loan and lease losses 60,519 — — 58,851 58,851 Short-term financial assets: Interest-bearing deposits with banks 1,328 1,328 — — 1,328 Federal funds sold 200 — 200 — 200 Securities purchased under agreements to resell 519 — 519 — 519 Total short-term financial assets 2,047 1,328 719 — 2,047 Trading securities (a) 1,412 — 1,399 13 1,412 Loans held for sale: Mortgage loans (elected fair value) (a) 68 — 42 26 68 USDA & SBA loans - LOCOM 406 — 407 — 407 Mortgage loans - LOCOM 28 — — 28 28 Total loans held for sale 502 — 449 54 503 Securities available for sale (a) 8,391 — 8,391 — 8,391 Securities held to maturity 1,323 — 1,161 — 1,161 Derivative assets (a) 577 9 568 — 577 Other assets: Tax credit investments 665 — — 653 653 Deferred compensation mutual funds 102 102 — — 102 Equity, mutual funds, and other (b) 261 34 — 227 261 Total other assets 1,028 136 — 880 1,016 Total assets $ 75,799 $ 1,473 $ 12,687 $ 59,798 $ 73,958 Liabilities: Defined maturity deposits $ 6,804 $ — $ 6,851 $ — $ 6,851 Trading liabilities (a) 509 — 509 — 509 Short-term financial liabilities: Federal funds purchased 302 — 302 — 302 Securities sold under agreements to repurchase 1,921 — 1,921 — 1,921 Other short-term borrowings 326 — 326 — 326 Total short-term financial liabilities 2,549 — 2,549 — 2,549 Term borrowings: Real estate investment trust-preferred 47 — — 47 47 Term borrowings—new market tax credit investment 65 — — 60 60 Secured borrowings 3 — — 3 3 Junior subordinated debentures 150 — — 150 150 Other long-term borrowings 885 — 824 — 824 Total term borrowings 1,150 — 824 260 1,084 Derivative liabilities (a) 699 10 666 23 699 Total liabilities $ 11,711 $ 10 $ 11,399 $ 283 $ 11,692 (a) Classes are detailed in the recurring and nonrecurring measurement tables. (b) Level 1 primarily consists of mutual funds with readily determinable fair values. Level 3 includes restricted investments in FHLB-Cincinnati stock of $24 million and FRB stock of $203 million. The following table presents the contractual amount and fair value of unfunded loan commitments and standby and other commitments as of June 30, 2024 and December 31, 2023: UNFUNDED COMMITMENTS Contractual Amount Fair Value (Dollars in millions) June 30, 2024 December 31, 2023 June 30, 2024 December 31, 2023 Unfunded Commitments: Loan commitments $ 21,990 $ 24,579 $ 1 $ 1 Standby and other commitments 752 746 7 8

Basis of Presentation and Acc_3

Basis of Presentation and Accounting Policies (Details) - USD ($) $ in Millions	Jun. 30, 2024	Jan. 01, 2024	Dec. 31, 2023
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Retained earnings	$ 4,172		$ 3,964
Accounting Standards Update 2023-02
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Retained earnings		$ 8

Investment Securities - Schedul

Investment Securities - Schedule of FHN's Investment Securities (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 9,116
Fair Value	7,924	$ 8,391
Amortized Cost	1,297	1,323
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(189)	(162)
Fair Value	1,108	1,161
Asset Pledged as Collateral
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	1,300	1,300
Government agency issued MBS
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	4,852	5,061
Gross Unrealized Gains	1	2
Gross Unrealized Losses	(622)	(579)
Fair Value	4,231	4,484
Amortized Cost	828	852
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(113)	(96)
Fair Value	715	756
Government agency issued CMO
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	2,374	2,487
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(354)	(341)
Fair Value	2,020	2,146
Amortized Cost	469	471
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(76)	(66)
Fair Value	393	405
Other U.S. government agencies
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	1,282	1,321
Gross Unrealized Gains	0	2
Gross Unrealized Losses	(164)	(151)
Fair Value	1,118	1,172
States and municipalities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	608	627
Gross Unrealized Gains	1	3
Gross Unrealized Losses	(54)	(41)
Fair Value	555	589
Securities available-for-sale, excluding interest only strip
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	9,116	9,496
Gross Unrealized Gains	2	7
Gross Unrealized Losses	(1,194)	(1,112)
Fair Value	7,924	8,391
Securities available-for-sale, excluding interest only strip | Asset Pledged as Collateral
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 6,900	$ 7,600

Investment Securities - Sched_2

Investment Securities - Schedule of Amortized Cost and Fair Value by Contractual Maturity (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Amortized Cost
Within 1 year	$ 0
After 1 year through 5 years	0
After 5 years through 10 years	0
After 10 years	0
Subtotal	0
Government agency issued MBS and CMO	1,297
Total	1,297
Fair Value
Within 1 year	0
After 1 year through 5 years	0
After 5 years through 10 years	0
After 10 years	0
Subtotal	0
Government agency issued MBS and CMO	1,108
Fair Value	1,108	$ 1,161
Amortized Cost
Within 1 year	44
After 1 year through 5 years	137
After 5 years through 10 years	369
After 10 years	1,340
Subtotal	1,890
Government agency issued MBS and CMO	7,226
Securities available for sale, amortized cost	9,116
Fair Value
Within 1 year	44
After 1 year through 5 years	127
After 5 years through 10 years	332
After 10 years	1,170
Subtotal	1,673
Government agency issued MBS and CMO	6,251
Securities available-for-sale	$ 7,924	$ 8,391

Investment Securities - Narrati

Investment Securities - Narrative (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Marketable Securities [Abstract]
Gains (losses) on available-for-sale securities	$ 0	$ 0	$ 0	$ 0
Available-for-sale, accrued interest, after allowance for credit loss	31,000,000		31,000,000		$ 32,000,000
Transfers between available for sale and held to maturity debt securities	0	0	0	0
Held-to-maturity, accrued interest, after allowance for credit loss	3,000,000		3,000,000		3,000,000
Allowance for credit loss	0		0		0
Carrying amount of equity investments without a readily determinable fair value	92,000,000		92,000,000		$ 89,000,000
Unrealized gains for equity investments with readily determinable fair values	$ 2,000,000	$ 4,000,000	$ 7,000,000	$ 6,000,000

Investment Securities - Sched_3

Investment Securities - Schedule of Investments within the Available for Sale Portfolio that had Unrealized Losses (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Schedule of Investments [Line Items]
Less than 12 months	$ 248	$ 300
12 months or longer	7,517	7,699
Total fair value	7,765	7,999
Unrealized Losses
Less than 12 months	(3)	(4)
12 months or longer	(1,191)	(1,108)
Total unrealized losses	(1,194)	(1,112)
Government agency issued MBS
Schedule of Investments [Line Items]
Less than 12 months	83	140
12 months or longer	4,102	4,231
Total fair value	4,185	4,371
Unrealized Losses
Less than 12 months	(1)	(2)
12 months or longer	(621)	(577)
Total unrealized losses	(622)	(579)
Government agency issued CMO
Schedule of Investments [Line Items]
Less than 12 months	28	32
12 months or longer	1,992	2,098
Total fair value	2,020	2,130
Unrealized Losses
Less than 12 months	0	0
12 months or longer	(354)	(341)
Total unrealized losses	(354)	(341)
Other U.S. government agencies
Schedule of Investments [Line Items]
Less than 12 months	104	114
12 months or longer	971	905
Total fair value	1,075	1,019
Unrealized Losses
Less than 12 months	(1)	(2)
12 months or longer	(164)	(149)
Total unrealized losses	(165)	(151)
States and municipalities
Schedule of Investments [Line Items]
Less than 12 months	33	14
12 months or longer	452	465
Total fair value	485	479
Unrealized Losses
Less than 12 months	(1)	0
12 months or longer	(52)	(41)
Total unrealized losses	$ (53)	$ (41)

Loans and Leases - Narrative (D

Loans and Leases - Narrative (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accrued interest	$ 294	$ 294		$ 287
Net loans and leases	61,960	61,960		60,519
Loans and leases	$ 62,781	62,781		61,292
Financing receivable, allowance for credit loss, writeoff, collateral		$ 1	$ 1
Credit Card Workout Program rate reduction, interest rate floor		0%
Credit Card Workout Program term extension, maximum period		5 years
Loans modified with subsequent default, amount		$ 8	$ 25
Minimum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Credit Card Hardship Program, rate and payment reduction, period		6 months
Maximum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Credit Card Hardship Program, rate and payment reduction, period		1 year
Commercial: | Minimum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial loan grades	1	1
Commercial: | Maximum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial loan grades	16	16
Commercial: | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	$ 33,452	$ 33,452		32,633
Commercial: | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	14,669	14,669		14,216
Loans to mortgage companies | Commercial: | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	$ 2,934	$ 2,934		2,024
Percentage contributed	20%	20%
Finance And Insurance Companies | Commercial: | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	$ 3,800	$ 3,800
General C I | Collateral Pledged
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	310	310		250
General C I | Commercial: | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	30,518	30,518		30,609
General C I | Commercial: | Commercial and industrial | Collateral Pledged
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	121	121
Commercial Real Estate | Commercial: | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	14,669	14,669		14,216
Commercial Real Estate | Commercial: | Commercial real estate | Collateral Pledged
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	189	189
Asset Pledged as Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
Net loans and leases	46,500	46,500		46,100
Asset Pledged as Collateral | General C I
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, allowance for credit loss, writeoff, collateral	19	40
Asset Pledged as Collateral | Home Equity Line of Credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	7	7		6
Asset Pledged as Collateral | R E Installment Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	$ 27	$ 27		$ 27

Loans and Leases - Schedule of

Loans and Leases - Schedule of Loans by Portfolio Segment (Details) - USD ($) $ in Millions	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Jun. 30, 2023	Mar. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	$ 62,781		$ 61,292
Allowance for loan and lease losses	(821)	$ (787)	(773)	$ (737)	$ (715)
Net loans and leases	61,960		60,519
Commercial: | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	30,518		30,609
Commercial: | Commercial and industrial | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Property, plant, and equipment and finance lease right-of-use asset	1,300		1,200
Commercial: | Loans to mortgage companies
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	2,934		2,024
Commercial: | Commercial, financial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	33,452		32,633
Allowance for loan and lease losses	(344)	(348)		(326)	(325)
Commercial: | Commercial, financial and industrial | Paycheck Protection Plan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	19		29	44
Commercial: | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	14,669		14,216
Allowance for loan and lease losses	(221)	(181)		(159)	(150)
Commercial: | Credit Card and Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	190		180
Consumer:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	13,909		13,650
Consumer: | Home Equity Line of Credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	2,122		2,219
Consumer: | Real estate installment loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	11,787		11,431
Consumer: | Credit Card and Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	751		$ 793
Allowance for loan and lease losses	$ (25)	$ (27)		$ (31)	$ (31)

Loans and Leases - Balances of

Loans and Leases - Balances of Commercial Loan Portfolio Classes, Disaggregated by PD Grade (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	$ 62,781	$ 61,292
Commercial: | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, originated year one	1,669	4,124
Financing receivable, originated year two	3,953	5,832
Financing receivable, originated year three	5,363	3,664
Financing receivable, originated year four	3,314	1,743
Financing receivable, originated year five	1,489	1,805
Financing receivable, originated prior to year five	4,891	3,605
LMC	2,934	2,024
Revolving Loans	9,512	9,460
Revolving Loans Converted to Term Loans	327	376
Loans and leases	33,452	32,633
Commercial: | Commercial and industrial | PD Grade 1 -12
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, originated year one	1,623	4,008
Financing receivable, originated year two	3,772	5,637
Financing receivable, originated year three	5,184	3,506
Financing receivable, originated year four	3,139	1,636
Financing receivable, originated year five	1,446	1,665
Financing receivable, originated prior to year five	4,569	3,448
LMC	2,934	2,019
Revolving Loans	8,963	9,087
Revolving Loans Converted to Term Loans	278	327
Loans and leases	31,908	31,333
Commercial: | Commercial and industrial | PD Grade 13
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, originated year one	45	75
Financing receivable, originated year two	133	60
Financing receivable, originated year three	71	64
Financing receivable, originated year four	65	56
Financing receivable, originated year five	18	101
Financing receivable, originated prior to year five	149	57
LMC	0	0
Revolving Loans	361	186
Revolving Loans Converted to Term Loans	28	0
Loans and leases	870	599
Commercial: | Commercial and industrial | PD Grade 14 ,15 and 16
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, originated year one	1	41
Financing receivable, originated year two	48	135
Financing receivable, originated year three	108	94
Financing receivable, originated year four	110	51
Financing receivable, originated year five	25	39
Financing receivable, originated prior to year five	173	100
LMC	0	5
Revolving Loans	188	187
Revolving Loans Converted to Term Loans	21	49
Loans and leases	674	701
Commercial: | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	14,669	14,216
Commercial: | Commercial real estate | Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, originated year one	288	858
Financing receivable, originated year two	1,050	3,476
Financing receivable, originated year three	3,856	3,652
Financing receivable, originated year four	3,678	1,259
Financing receivable, originated year five	1,214	1,566
Financing receivable, originated prior to year five	4,221	2,994
Revolving Loans	362	393
Revolving Loans Converted to Term Loans	0	18
Loans and leases	14,669	14,216
Commercial: | Commercial real estate | PD Grade 1 -12 | Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, originated year one	288	853
Financing receivable, originated year two	1,046	3,473
Financing receivable, originated year three	3,580	3,518
Financing receivable, originated year four	3,470	1,162
Financing receivable, originated year five	1,071	1,216
Financing receivable, originated prior to year five	3,635	2,853
Revolving Loans	356	393
Revolving Loans Converted to Term Loans	0	18
Loans and leases	13,446	13,486
Commercial: | Commercial real estate | PD Grade 13 | Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, originated year one	0	5
Financing receivable, originated year two	1	1
Financing receivable, originated year three	209	129
Financing receivable, originated year four	94	86
Financing receivable, originated year five	31	175
Financing receivable, originated prior to year five	134	82
Revolving Loans	0	0
Revolving Loans Converted to Term Loans	0	0
Loans and leases	469	478
Commercial: | Commercial real estate | PD Grade 14 ,15 and 16 | Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, originated year one	0	0
Financing receivable, originated year two	3	2
Financing receivable, originated year three	67	5
Financing receivable, originated year four	114	11
Financing receivable, originated year five	112	175
Financing receivable, originated prior to year five	452	59
Revolving Loans	6	0
Revolving Loans Converted to Term Loans	0	0
Loans and leases	$ 754	$ 252

Loans and Leases - Loans by FIC

Loans and Leases - Loans by FICO Score (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	$ 62,781	$ 61,292
Consumer:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	13,909	13,650
Consumer: | Consumer real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, originated year one	775	2,130
Financing receivable, originated year two	2,100	2,854
Financing receivable, originated year three	2,792	2,291
Financing receivable, originated year four	2,215	1,043
Financing receivable, originated year five	1,004	706
Financing receivable, originated prior to year five	2,901	2,407
Revolving Loans	2,015	2,101
Revolving Loans Converted to Term Loans	107	118
Loans and leases	13,909	13,650
Consumer: | Credit Card and Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, originated year one	28	80
Financing receivable, originated year two	60	46
Financing receivable, originated year three	33	20
Financing receivable, originated year four	16	16
Financing receivable, originated year five	12	19
Financing receivable, originated prior to year five	152	150
Revolving Loans	440	454
Revolving Loans Converted to Term Loans	10	8
Loans and leases	751	793
FICO score 740 or greater | Consumer: | Consumer real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, originated year one	557	1,572
Financing receivable, originated year two	1,550	2,099
Financing receivable, originated year three	2,063	1,720
Financing receivable, originated year four	1,657	730
Financing receivable, originated year five	706	465
Financing receivable, originated prior to year five	1,670	1,332
Revolving Loans	1,448	1,522
Revolving Loans Converted to Term Loans	45	50
Loans and leases	9,696	9,490
FICO score 740 or greater | Consumer: | Credit Card and Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, originated year one	13	52
Financing receivable, originated year two	34	26
Financing receivable, originated year three	18	10
Financing receivable, originated year four	7	5
Financing receivable, originated year five	3	3
Financing receivable, originated prior to year five	25	27
Revolving Loans	191	207
Revolving Loans Converted to Term Loans	7	5
Loans and leases	298	335
FICO score 720-739 | Consumer: | Consumer real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, originated year one	80	205
Financing receivable, originated year two	203	286
Financing receivable, originated year three	282	227
Financing receivable, originated year four	223	107
Financing receivable, originated year five	105	88
Financing receivable, originated prior to year five	296	230
Revolving Loans	192	192
Revolving Loans Converted to Term Loans	14	15
Loans and leases	1,395	1,350
FICO score 720-739 | Consumer: | Credit Card and Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, originated year one	8	5
Financing receivable, originated year two	5	3
Financing receivable, originated year three	2	1
Financing receivable, originated year four	1	1
Financing receivable, originated year five	1	1
Financing receivable, originated prior to year five	5	5
Revolving Loans	21	24
Revolving Loans Converted to Term Loans	1	1
Loans and leases	44	41
FICO score 700-719 | Consumer: | Consumer real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, originated year one	57	154
Financing receivable, originated year two	151	232
Financing receivable, originated year three	223	193
Financing receivable, originated year four	185	81
Financing receivable, originated year five	75	52
Financing receivable, originated prior to year five	264	224
Revolving Loans	155	159
Revolving Loans Converted to Term Loans	16	17
Loans and leases	1,126	1,112
FICO score 700-719 | Consumer: | Credit Card and Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, originated year one	1	5
Financing receivable, originated year two	4	4
Financing receivable, originated year three	3	1
Financing receivable, originated year four	1	1
Financing receivable, originated year five	1	1
Financing receivable, originated prior to year five	4	4
Revolving Loans	22	25
Revolving Loans Converted to Term Loans	1	1
Loans and leases	37	42
FICO score 660-699 | Consumer: | Consumer real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, originated year one	70	170
Financing receivable, originated year two	166	198
Financing receivable, originated year three	188	113
Financing receivable, originated year four	108	83
Financing receivable, originated year five	79	53
Financing receivable, originated prior to year five	318	290
Revolving Loans	162	168
Revolving Loans Converted to Term Loans	17	18
Loans and leases	1,108	1,093
FICO score 660-699 | Consumer: | Credit Card and Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, originated year one	1	4
Financing receivable, originated year two	3	3
Financing receivable, originated year three	2	1
Financing receivable, originated year four	1	1
Financing receivable, originated year five	0	1
Financing receivable, originated prior to year five	7	8
Revolving Loans	21	23
Revolving Loans Converted to Term Loans	0	0
Loans and leases	35	41
FICO score 620-659 | Consumer: | Consumer real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, originated year one	5	11
Financing receivable, originated year two	11	20
Financing receivable, originated year three	17	23
Financing receivable, originated year four	23	22
Financing receivable, originated year five	21	36
Financing receivable, originated prior to year five	132	106
Revolving Loans	34	36
Revolving Loans Converted to Term Loans	5	7
Loans and leases	248	261
FICO score 620-659 | Consumer: | Credit Card and Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, originated year one	1	2
Financing receivable, originated year two	1	1
Financing receivable, originated year three	0	1
Financing receivable, originated year four	0	0
Financing receivable, originated year five	0	0
Financing receivable, originated prior to year five	2	3
Revolving Loans	6	7
Revolving Loans Converted to Term Loans	0	0
Loans and leases	10	14
FICO score less than 620 | Consumer: | Consumer real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, originated year one	6	18
Financing receivable, originated year two	19	19
Financing receivable, originated year three	19	15
Financing receivable, originated year four	19	20
Financing receivable, originated year five	18	12
Financing receivable, originated prior to year five	221	225
Revolving Loans	24	24
Revolving Loans Converted to Term Loans	10	11
Loans and leases	336	344
FICO score less than 620 | Consumer: | Credit Card and Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, originated year one	4	12
Financing receivable, originated year two	13	9
Financing receivable, originated year three	8	6
Financing receivable, originated year four	6	8
Financing receivable, originated year five	7	13
Financing receivable, originated prior to year five	109	103
Revolving Loans	179	168
Revolving Loans Converted to Term Loans	1	1
Loans and leases	$ 327	$ 320

Loans and Leases - Accruing and

Loans and Leases - Accruing and Non-Accruing Loans by Class (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current, accruing	$ 62,110	$ 60,724
Total Accruing	62,207	60,830
Current, non-accruing	292	228
Total Non- Accruing	574	462
Loans and leases	62,781	61,292
30-89 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due, accruing	91	85
Past due, non-accruing	49	30
90+ Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due, accruing	6	21
Past due, non-accruing	233	204
Commercial: | Commercial, financial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current, accruing	33,252	32,416
Total Accruing	33,285	32,449
Current, non-accruing	87	113
Total Non- Accruing	167	184
Loans and leases	33,452	32,633
Commercial: | Commercial, financial and industrial | 30-89 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due, accruing	32	32
Past due, non-accruing	3	18
Commercial: | Commercial, financial and industrial | 90+ Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due, accruing	1	1
Past due, non-accruing	77	53
Commercial: | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	14,669	14,216
Commercial: | Credit Card and Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	190	180
Consumer:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	13,909	13,650
Consumer: | Consumer Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current, accruing	13,713	13,453
Total Accruing	13,765	13,510
Current, non-accruing	67	73
Total Non- Accruing	144	140
Loans and leases	13,909	13,650
Consumer: | Consumer Real Estate | 30-89 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due, accruing	49	40
Past due, non-accruing	17	12
Consumer: | Consumer Real Estate | 90+ Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due, accruing	3	17
Past due, non-accruing	60	55
Consumer: | Credit Card and Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current, accruing	741	783
Total Accruing	749	791
Current, non-accruing	1	1
Total Non- Accruing	2	2
Loans and leases	751	793
Consumer: | Credit Card and Other | 30-89 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due, accruing	6	5
Past due, non-accruing	0	0
Consumer: | Credit Card and Other | 90+ Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due, accruing	2	3
Past due, non-accruing	1	1
General C I | Commercial: | Commercial, financial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current, accruing	30,318	30,398
Total Accruing	30,351	30,430
Current, non-accruing	87	108
Total Non- Accruing	167	179
Loans and leases	30,518	30,609
Nonaccrual, no allowance	158	178
General C I | Commercial: | Commercial, financial and industrial | 30-89 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due, accruing	32	31
Past due, non-accruing	3	18
General C I | Commercial: | Commercial, financial and industrial | 90+ Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due, accruing	1	1
Past due, non-accruing	77	53
Loans to mortgage companies | Commercial: | Commercial, financial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current, accruing	2,934	2,018
Total Accruing	2,934	2,019
Current, non-accruing	0	5
Total Non- Accruing	0	5
Loans and leases	2,934	2,024
Loans to mortgage companies | Commercial: | Commercial, financial and industrial | 30-89 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due, accruing	0	1
Past due, non-accruing	0	0
Loans to mortgage companies | Commercial: | Commercial, financial and industrial | 90+ Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due, accruing	0	0
Past due, non-accruing	0	0
Commercial Real Estate | Commercial: | Commercial, financial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual, no allowance	255	129
Commercial Real Estate | Commercial: | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	14,669	14,216
Commercial Real Estate | Commercial real estate | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current, accruing	14,404	14,072
Total Accruing	14,408	14,080
Current, non-accruing	137	41
Total Non- Accruing	261	136
Loans and leases	14,669	14,216
Commercial Real Estate | Commercial real estate | Commercial real estate | 30-89 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due, accruing	4	8
Past due, non-accruing	29	0
Commercial Real Estate | Commercial real estate | Commercial real estate | 90+ Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due, accruing	0	0
Past due, non-accruing	95	95
Home Equity Line of Credit | Consumer: | Consumer Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current, accruing	2,068	2,158
Total Accruing	2,080	2,173
Current, non-accruing	29	30
Total Non- Accruing	42	46
Loans and leases	2,122	2,219
Nonaccrual, no allowance	4	4
Home Equity Line of Credit | Consumer: | Consumer Real Estate | 30-89 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due, accruing	9	11
Past due, non-accruing	4	6
Home Equity Line of Credit | Consumer: | Consumer Real Estate | 90+ Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due, accruing	3	4
Past due, non-accruing	9	10
R E Installment Loans | Consumer: | Consumer Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current, accruing	11,645	11,295
Total Accruing	11,685	11,337
Current, non-accruing	38	43
Total Non- Accruing	102	94
Loans and leases	11,787	11,431
Nonaccrual, no allowance	10	10
R E Installment Loans | Consumer: | Consumer Real Estate | 30-89 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due, accruing	40	29
Past due, non-accruing	13	6
R E Installment Loans | Consumer: | Consumer Real Estate | 90+ Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due, accruing	0	13
Past due, non-accruing	51	45
Credit card | Consumer: | Credit Card and Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current, accruing	276	271
Total Accruing	282	277
Current, non-accruing	0	0
Total Non- Accruing	0	0
Loans and leases	282	277
Credit card | Consumer: | Credit Card and Other | 30-89 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due, accruing	4	3
Past due, non-accruing	0	0
Credit card | Consumer: | Credit Card and Other | 90+ Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due, accruing	2	3
Past due, non-accruing	0	0
Other | Consumer: | Credit Card and Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current, accruing	465	512
Total Accruing	467	514
Current, non-accruing	1	1
Total Non- Accruing	2	2
Loans and leases	469	516
Other | Consumer: | Credit Card and Other | 30-89 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due, accruing	2	2
Past due, non-accruing	0	0
Other | Consumer: | Credit Card and Other | 90+ Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due, accruing	0	0
Past due, non-accruing	$ 1	$ 1

Loans and Leases - Modification

Loans and Leases - Modifications to Borrowers Experiencing Financial Difficulty (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Interest Rate Reduction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Balance	$ 0	$ 1
% of Total Class	0%	0%
Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Balance	$ 123	$ 120
% of Total Class	0.20%	0.20%
Principal Forgiveness
Financing Receivable, Troubled Debt Restructuring [Line Items]
Balance	$ 0	$ 1
% of Total Class	0%	0%
Payment Deferrals
Financing Receivable, Troubled Debt Restructuring [Line Items]
Balance	$ 0	$ 3
% of Total Class	0%	0%
Combination - Term Extension and Interest Rate Reduction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Balance	$ 3	$ 3
% of Total Class	0%	0%
Combination - Term Extension, Interest Rate Reduction, and Interest Forgiveness
Financing Receivable, Troubled Debt Restructuring [Line Items]
Balance	$ 0	$ 2
% of Total Class	0%	0%
Combination - Term Extension, Interest Rate Reduction, and Interest Deferrals
Financing Receivable, Troubled Debt Restructuring [Line Items]
Balance	$ 0	$ 17
% of Total Class	0%	0%
Consumer: | Consumer Real Estate | Interest Rate Reduction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Balance	$ 0	$ 1
% of Total Class	0%	0%
Consumer: | Consumer Real Estate | Interest Rate Reduction | Maximum
Financing Receivable, Troubled Debt Restructuring [Line Items]
Weighted average interest rate of loans	9.87%	8.70%
Consumer: | Consumer Real Estate | Interest Rate Reduction | Minimum
Financing Receivable, Troubled Debt Restructuring [Line Items]
Weighted average interest rate of loans	6.52%	3.60%
Consumer: | Consumer Real Estate | Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Balance	$ 0	$ 1
% of Total Class	0%	0%
Weighted average life of loans	22 years	13 years
Consumer: | Consumer Real Estate | Principal Forgiveness
Financing Receivable, Troubled Debt Restructuring [Line Items]
Balance	$ 0	$ 1
% of Total Class	0%	0%
Decrease from loan modification	$ 1	$ 1
Amount in accordance with original loan terms		1
Consumer: | Consumer Real Estate | Payment Deferrals
Financing Receivable, Troubled Debt Restructuring [Line Items]
Balance	$ 0	$ 3
% of Total Class	0%	0%
Weighted average life of loans		11 months
Consumer: | Consumer Real Estate | Combination - Term Extension and Interest Rate Reduction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Balance	$ 3	$ 3
% of Total Class	0%	0%
Weighted average life of loans	10 years 9 months 18 days	13 years 1 month 6 days
Consumer: | Consumer Real Estate | Combination - Term Extension and Interest Rate Reduction | Maximum
Financing Receivable, Troubled Debt Restructuring [Line Items]
Weighted average interest rate of loans	8.39%	5.40%
Consumer: | Consumer Real Estate | Combination - Term Extension and Interest Rate Reduction | Minimum
Financing Receivable, Troubled Debt Restructuring [Line Items]
Weighted average interest rate of loans	3.67%	3.90%
Consumer: | Credit Card and Other | Interest Rate Reduction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Balance	$ 0	$ 0
% of Total Class	0%	0%
Consumer: | Credit Card and Other | Interest Rate Reduction | Maximum
Financing Receivable, Troubled Debt Restructuring [Line Items]
Weighted average interest rate of loans	5.77%	14.70%
Consumer: | Credit Card and Other | Interest Rate Reduction | Minimum
Financing Receivable, Troubled Debt Restructuring [Line Items]
Weighted average interest rate of loans	4.41%	0%
Commercial: | Commercial and industrial | Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Balance	$ 95	$ 73
% of Total Class	0.30%	0.20%
Weighted average life of loans	1 year 2 months 12 days	1 year
Commercial: | Commercial and industrial | Combination - Principal Forgiveness, Term Extension, and Payment Deferrals
Financing Receivable, Troubled Debt Restructuring [Line Items]
Balance	$ 0	$ 16
% of Total Class	0%	0%
Weighted average life of loans		6 years 2 months 12 days
Decrease from loan modification		$ 2
Commercial: | Commercial and industrial | Combination - Term Extension, Interest Rate Reduction, and Interest Forgiveness
Financing Receivable, Troubled Debt Restructuring [Line Items]
Balance	$ 0	$ 2
% of Total Class	0%	0%
Weighted average life of loans		3 years 8 months 12 days
Decrease from loan modification		$ 1
Commercial: | Commercial and industrial | Combination - Term Extension, Interest Rate Reduction, and Interest Forgiveness | Maximum
Financing Receivable, Troubled Debt Restructuring [Line Items]
Weighted average interest rate of loans		11.30%
Commercial: | Commercial and industrial | Combination - Term Extension, Interest Rate Reduction, and Interest Forgiveness | Minimum
Financing Receivable, Troubled Debt Restructuring [Line Items]
Weighted average interest rate of loans		7.50%
Commercial: | Commercial real estate | Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Balance	$ 28	$ 46
% of Total Class	0.20%	0.30%
Weighted average life of loans	2 years 4 months 24 days	1 year
Commercial: | Commercial real estate | Combination - Term Extension, Interest Rate Reduction, and Interest Deferrals
Financing Receivable, Troubled Debt Restructuring [Line Items]
Balance	$ 0	$ 17
% of Total Class	0%	0%
Weighted average life of loans		1 year
Decrease from loan modification		$ 1
Commercial: | Commercial real estate | Combination - Term Extension, Interest Rate Reduction, and Interest Deferrals | Maximum
Financing Receivable, Troubled Debt Restructuring [Line Items]
Weighted average interest rate of loans		8.70%
Commercial: | Commercial real estate | Combination - Term Extension, Interest Rate Reduction, and Interest Deferrals | Minimum
Financing Receivable, Troubled Debt Restructuring [Line Items]
Weighted average interest rate of loans		8%

Loans and Leases - Performance

Loans and Leases - Performance of Loans that have been Modified in the Last 12 Months (Details) $ in Millions	Jun. 30, 2024 USD ($)
Financing Receivable, Troubled Debt Restructuring [Line Items]
Non-Accruing	$ 16
Current
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans	142
30-89 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans	0
90+ Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans	0
Commercial: | Commercial and industrial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Non-Accruing	13
Commercial: | Commercial and industrial | Current
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans	110
Commercial: | Commercial and industrial | 30-89 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans	0
Commercial: | Commercial and industrial | 90+ Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans	0
Commercial: | Commercial real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Non-Accruing	0
Commercial: | Commercial real estate | Current
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans	29
Commercial: | Commercial real estate | 30-89 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans	0
Commercial: | Commercial real estate | 90+ Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans	0
Consumer: | Consumer Real Estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Non-Accruing	3
Consumer: | Consumer Real Estate | Current
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans	3
Consumer: | Consumer Real Estate | 30-89 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans	0
Consumer: | Consumer Real Estate | 90+ Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans	0
Consumer: | Credit Card and Other
Financing Receivable, Troubled Debt Restructuring [Line Items]
Non-Accruing	0
Consumer: | Credit Card and Other | Current
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans	0
Consumer: | Credit Card and Other | 30-89 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans	0
Consumer: | Credit Card and Other | 90+ Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans	$ 0

Allowance for Credit Losses - R

Allowance for Credit Losses - Rollforward of Allowance for Credit Losses (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023	Dec. 31, 2022
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	$ 787	$ 715	$ 773
Charge-offs	(49)	(33)	(95)	$ (54)
Recoveries	15	10
Provision for credit losses	55	50	105	100
Ending balance	821	737	821	737	$ 773
Accounting Standards Update [Extensible List]					Accounting Standards Update 2023-02	Accounting Standards Update 2022-02
Loans and leases	62,781		62,781		$ 61,292
Funded And Unfunded Loan Commitments
Allowance for Loan and Lease Losses [Roll Forward]
Ending balance	887	827	887	827
Funded commitment
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance			773	685	685
Charge-offs			(95)	(54)
Recoveries			21	15
Provision for credit losses	68	45	122	97
Ending balance					773	$ 685
Accounting Standards Update [Extensible List]						Accounting Standards Update 2022-02
Funded commitment | Accounting Standards Update 2022-02
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance				(6)	(6)
Ending balance						$ (6)
Unfunded commitment
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	79	85	83	87	87
Provision for credit losses	(13)	5	(17)	3
Ending balance	66	90	66	90	83	87
Commercial: | Commercial, financial and industrial
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	348	325
Charge-offs	(24)	(19)	(52)	(33)
Recoveries	12	5
Ending balance	344	326	344	326
Loans and leases	33,452		33,452		32,633
Commercial: | Commercial, financial and industrial | Paycheck Protection Plan
Allowance for Loan and Lease Losses [Roll Forward]
Loans and leases	19	44	19	44	29
Commercial: | Commercial, financial and industrial | Funded And Unfunded Loan Commitments
Allowance for Loan and Lease Losses [Roll Forward]
Ending balance	388	381	388	381
Commercial: | Commercial, financial and industrial | Funded commitment
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance			339	308	308
Charge-offs			(52)	(33)
Recoveries			14	7
Provision for credit losses	8	15	43	43
Ending balance					339	308
Commercial: | Commercial, financial and industrial | Funded commitment | Accounting Standards Update 2022-02
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance				1	1
Ending balance						1
Commercial: | Commercial, financial and industrial | Unfunded commitment
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	49	53	49	55	55
Provision for credit losses	(5)	2	(5)	0
Ending balance	44	55	44	55	49	55
Commercial: | Commercial Real Estate
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	181	150
Charge-offs	(19)	(8)	(32)	(10)
Recoveries	0	1
Ending balance	221	159	221	159
Loans and leases	14,669		14,669		14,216
Commercial: | Commercial Real Estate | Funded And Unfunded Loan Commitments
Allowance for Loan and Lease Losses [Roll Forward]
Ending balance	231	183	231	183
Commercial: | Commercial Real Estate | Funded commitment
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance			172	146	146
Charge-offs			(32)	(10)
Recoveries			0	1
Provision for credit losses	59	16	81	22
Ending balance					172	146
Commercial: | Commercial Real Estate | Funded commitment | Accounting Standards Update 2022-02
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance				0	0
Ending balance						0
Commercial: | Commercial Real Estate | Unfunded commitment
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	18	21	22	22	22
Provision for credit losses	(8)	3	(12)	2
Ending balance	10	24	10	24	22	22
Commercial: | Credit Card and Other
Allowance for Loan and Lease Losses [Roll Forward]
Loans and leases	190		190		180
Consumer:
Allowance for Loan and Lease Losses [Roll Forward]
Loans and leases	13,909		13,909		13,650
Consumer: | Consumer Real Estate
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	231	209
Charge-offs	(1)	(1)	(1)	(1)
Recoveries	2	3
Ending balance	231	221	231	221
Loans and leases	13,909		13,909		13,650
Consumer: | Consumer Real Estate | Funded And Unfunded Loan Commitments
Allowance for Loan and Lease Losses [Roll Forward]
Ending balance	243	232	243	232
Consumer: | Consumer Real Estate | Funded commitment
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance			233	200	200
Charge-offs			(1)	(1)
Recoveries			4	5
Provision for credit losses	(1)	10	(5)	24
Ending balance					233	200
Consumer: | Consumer Real Estate | Funded commitment | Accounting Standards Update 2022-02
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance				(7)	(7)
Ending balance						(7)
Consumer: | Consumer Real Estate | Unfunded commitment
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	12	11	12	10	10
Provision for credit losses	0	0	0	1
Ending balance	12	11	12	11	12	10
Consumer: | Credit Card and Other
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	27	31
Charge-offs	(5)	(5)	(10)	(10)
Recoveries	1	1
Ending balance	25	31	25	31
Loans and leases	751		751		793
Consumer: | Credit Card and Other | Funded And Unfunded Loan Commitments
Allowance for Loan and Lease Losses [Roll Forward]
Ending balance	25	31	25	31
Consumer: | Credit Card and Other | Funded commitment
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance			29	31	31
Charge-offs			(10)	(10)
Recoveries			3	2
Provision for credit losses	2	4	3	8
Ending balance					29	31
Consumer: | Credit Card and Other | Funded commitment | Accounting Standards Update 2022-02
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance				0	0
Ending balance						0
Consumer: | Credit Card and Other | Unfunded commitment
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	0	0	0	0	0
Provision for credit losses	0	0	0	0
Ending balance	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0

Allowance for Credit Losses - G

Allowance for Credit Losses - Gross Charge-Offs by Year of Origination (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Allowance for Loan and Lease Losses [Roll Forward]
Year one, current fiscal year charge offs			$ 4	$ 7
Year two, current fiscal year charge offs			9	5
Year three, current fiscal year charge offs			12	6
Year four, current fiscal year charge offs			20	4
Year five, current fiscal year charge offs			10	8
Prior year charge offs			34	20
Revolving loans charge offs			6	4
Total charge offs	$ 49	$ 33	95	54
Commercial: | Commercial, financial and industrial
Allowance for Loan and Lease Losses [Roll Forward]
Year one, current fiscal year charge offs			0	1
Year two, current fiscal year charge offs			9	5
Year three, current fiscal year charge offs			11	6
Year four, current fiscal year charge offs			20	4
Year five, current fiscal year charge offs			1	6
Prior year charge offs			9	10
Revolving loans charge offs			2	1
Total charge offs	24	19	52	33
Commercial: | Commercial Real Estate
Allowance for Loan and Lease Losses [Roll Forward]
Year one, current fiscal year charge offs			0	0
Year two, current fiscal year charge offs			0	0
Year three, current fiscal year charge offs			0	0
Year four, current fiscal year charge offs			0	0
Year five, current fiscal year charge offs			9	2
Prior year charge offs			23	8
Revolving loans charge offs			0	0
Total charge offs	19	8	32	10
Consumer: | Consumer Real Estate
Allowance for Loan and Lease Losses [Roll Forward]
Year one, current fiscal year charge offs			0	0
Year two, current fiscal year charge offs			0	0
Year three, current fiscal year charge offs			0	0
Year four, current fiscal year charge offs			0	0
Year five, current fiscal year charge offs			0	0
Prior year charge offs			1	1
Revolving loans charge offs			0	0
Total charge offs	1	1	1	1
Consumer: | Credit Card and Other
Allowance for Loan and Lease Losses [Roll Forward]
Year one, current fiscal year charge offs			4	6
Year two, current fiscal year charge offs			0	0
Year three, current fiscal year charge offs			1	0
Year four, current fiscal year charge offs			0	0
Year five, current fiscal year charge offs			0	0
Prior year charge offs			1	1
Revolving loans charge offs			4	3
Total charge offs	$ 5	$ 5	$ 10	$ 10

Mortgage Banking Activity - Nar

Mortgage Banking Activity - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Net loans and leases	$ 61,960		$ 61,960		$ 60,519
Mortgage banking income	10	$ 6	19	$ 11
Mortgage Banking
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage banking income			2	$ 2
First Horizon Bank
Accounts, Notes, Loans and Financing Receivable [Line Items]
Net loans and leases	$ 32		$ 32

Mortgage Banking Activity - Res

Mortgage Banking Activity - Residential Mortgage Loans (Details) - USD ($) $ in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2024	Dec. 31, 2023
Loans Receivable Held-for-sale, Net, Reconciliation to Cash Flow [Roll Forward]
Balance at beginning of period	$ 502
Balance at end of period	471	$ 502
Mortgage loans
Loans Receivable Held-for-sale, Net, Reconciliation to Cash Flow [Roll Forward]
Balance at beginning of period	62	44
Originations and purchases	485	692
Sales, net of gains	(436)	(674)
Balance at end of period	$ 111	$ 62

Mortgage Banking Activity - MSR

Mortgage Banking Activity - MSR Carrying Amount and Accumulated Amortization (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Mortgage Banking [Abstract]
Gross Carrying Amount	$ 20	$ 18
Accumulated Amortization	(8)	(7)
Net Carrying Amount	$ 28	$ 25

Goodwill and Other Intangible_3

Goodwill and Other Intangible Assets - Schedule of Goodwill by Reportable Segment (Details) - USD ($) $ in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2024	Dec. 31, 2023
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 1,510	$ 1,511
Additions	0	0
Divestitures	0	(1)
Goodwill, ending balance	1,510	1,510
Regional Banking
Goodwill [Roll Forward]
Goodwill, beginning balance	825	825
Additions	0	0
Divestitures	0	0
Goodwill, ending balance	825	825
Specialty Banking
Goodwill [Roll Forward]
Goodwill, beginning balance	685	686
Additions	0	0
Divestitures	0	(1)
Goodwill, ending balance	$ 685	$ 685

Goodwill and Other Intangible_4

Goodwill and Other Intangible Assets - Schedule of Intangible Assets and Accumulated Amortization Included in the Consolidated Statements of Condition (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Intangible Assets [Line Items]
Gross Carrying Amount	$ 427	$ 427
Accumulated Amortization	(262)	(241)
Net Carrying Value	165	186
Core deposit intangibles
Intangible Assets [Line Items]
Gross Carrying Amount	368	368
Accumulated Amortization	(227)	(208)
Net Carrying Value	141	160
Client relationships
Intangible Assets [Line Items]
Gross Carrying Amount	32	32
Accumulated Amortization	(17)	(16)
Net Carrying Value	15	16
Other
Intangible Assets [Line Items]
Gross Carrying Amount	27	27
Accumulated Amortization	(18)	(17)
Net Carrying Value	$ 9	$ 10

Preferred Stock - Non-Cumulativ

Preferred Stock - Non-Cumulative Perpetual Preferred Stock (Details) - USD ($) $ in Millions				6 Months Ended
	May 01, 2026	Aug. 01, 2025	May 01, 2024	Jun. 30, 2024	Dec. 31, 2023
Class of Stock [Line Items]
Shares Outstanding (in shares)				16,750
Liquidation Amount				$ 438
Carrying Amount				$ 426	$ 520
Series B
Class of Stock [Line Items]
Annual Dividend Rate				6.625%
Shares Outstanding (in shares)				8,000
Liquidation Amount				$ 80
Carrying Amount				$ 77	77
Series B | Forecast
Class of Stock [Line Items]
Basis spread on variable rate		4.52361%
Series B | Forecast | Variable Rate Basis Spread, Percentage One
Class of Stock [Line Items]
Basis spread on variable rate		0.26161%
Series B | Forecast | Variable Rate Basis Spread, Percentage Two
Class of Stock [Line Items]
Basis spread on variable rate		4.262%
Series C
Class of Stock [Line Items]
Annual Dividend Rate				6.60%
Shares Outstanding (in shares)				5,750
Liquidation Amount				$ 58
Carrying Amount				$ 59	59
Series C | Forecast
Class of Stock [Line Items]
Basis spread on variable rate	5.18161%
Series C | Forecast | Variable Rate Basis Spread, Percentage One
Class of Stock [Line Items]
Basis spread on variable rate	0.26161%
Series C | Forecast | Variable Rate Basis Spread, Percentage Two
Class of Stock [Line Items]
Basis spread on variable rate	4.92%
Series D
Class of Stock [Line Items]
Annual Dividend Rate				6.10%
Shares Outstanding (in shares)				0
Liquidation Amount				$ 0
Carrying Amount				$ 0	94
Basis spread on variable rate			4.12061%
Series D | Variable Rate Basis Spread, Percentage One
Class of Stock [Line Items]
Basis spread on variable rate			0.26161%
Series D | Variable Rate Basis Spread, Percentage Two
Class of Stock [Line Items]
Basis spread on variable rate			3.859%
Series E
Class of Stock [Line Items]
Annual Dividend Rate				6.50%
Shares Outstanding (in shares)				1,500
Liquidation Amount				$ 150
Carrying Amount				$ 145	145
Series F
Class of Stock [Line Items]
Annual Dividend Rate				4.70%
Shares Outstanding (in shares)				1,500
Liquidation Amount				$ 150
Carrying Amount				$ 145	$ 145
Series A
Class of Stock [Line Items]
Liquidation Amount			$ 100
Carrying Amount			$ 94

Preferred Stock - Narrative (De

Preferred Stock - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	May 01, 2024	Dec. 31, 2023
Class of Stock [Line Items]
Liquidation Amount	$ 438		$ 438
Carrying Amount	$ 426		$ 426		$ 520
Series D preferred stock redemption		$ 494
Preferred stock, issued (in shares)	16,750		16,750		26,750
Noncontrolling interest	$ 295		$ 295		$ 295
Retained Earnings
Class of Stock [Line Items]
Series D preferred stock redemption	$ 7	$ 0	$ 7
Series A
Class of Stock [Line Items]
Liquidation Amount				$ 100
Carrying Amount				$ 94
Preferred Class A
Class of Stock [Line Items]
Preferred stock, issued (in shares)	300,000		300,000
Preferred stock, liquidation preference per share (in dollars per share)	$ 1,000		$ 1,000
Basis spread on variable rate			1.11161%
Annual Dividend Rate			3.75%
Noncontrolling interest	$ 295		$ 295		$ 295
Preferred Class A | Variable Rate Basis Spread, Percentage One
Class of Stock [Line Items]
Basis spread on variable rate			0.26161%
Preferred Class A | Variable Rate Basis Spread, Percentage Two
Class of Stock [Line Items]
Basis spread on variable rate			0.85%
Preferred Class B | FT Real Estate Securities Company, Inc.
Class of Stock [Line Items]
Preferred stock, liquidation preference per share (in dollars per share)	$ 1,000,000		$ 1,000,000
Annual Dividend Rate			9.50%
Preferred stock issuance (in shares)			50
Preferred Class B | FT Real Estate Securities Company, Inc. | Non Affiliates
Class of Stock [Line Items]
Preferred stock issuance (in shares)			47

Components of Other Comprehen_3

Components of Other Comprehensive Income (Loss) - Schedule of Changes in AOCI (Details) - USD ($) $ in Millions	3 Months Ended								6 Months Ended
	Jun. 30, 2024		Mar. 31, 2024		Jun. 30, 2023		Mar. 31, 2023		Jun. 30, 2024		Jun. 30, 2023
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning of period	$ 9,173		$ 9,291		$ 8,895		$ 8,547		$ 9,291		$ 8,547
Other comprehensive income (loss)	(10)		(83)		(151)		160		(93)		9
Balance, ending of period	8,955		9,173		8,960		8,895		8,955		8,960
Accumulated Other Comprehensive Income (Loss)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning of period	(1,271)	[1]	(1,188)	[1]	(1,208)	[2]	(1,368)	[2]	(1,188)	[1]	(1,368)	[2]
Net unrealized gains (losses)	(25)				(166)				(123)		(19)
Amounts reclassified from AOCI	15				15				30		28
Other comprehensive income (loss)	(10)	[1]	(83)	[1]	(151)	[2]	160	[2]	(93)		9
Balance, ending of period	(1,281)	[1]	(1,271)	[1]	(1,359)	[2]	(1,208)	[2]	(1,281)	[1]	(1,359)	[2]
Securities AFS
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning of period	(891)		(836)		(859)		(973)		(836)		(973)
Net unrealized gains (losses)	(10)				(105)				(65)		9
Amounts reclassified from AOCI	0				0				0		0
Other comprehensive income (loss)	(10)				(105)				(65)		9
Balance, ending of period	(901)		(891)		(964)		(859)		(901)		(964)
Cash Flow Hedges
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning of period	(110)		(80)		(83)		(127)		(80)		(127)
Net unrealized gains (losses)	(15)				(59)				(58)		(26)
Amounts reclassified from AOCI	13				13				26		24
Other comprehensive income (loss)	(2)				(46)				(32)		(2)
Balance, ending of period	(112)		(110)		(129)		(83)		(112)		(129)
Pension and Post-retirement Plans
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning of period	(270)		(272)		(266)		(268)		(272)		(268)
Net unrealized gains (losses)	0				(2)				0		(2)
Amounts reclassified from AOCI	2				2				4		4
Other comprehensive income (loss)	2				0				4		2
Balance, ending of period	$ (268)		$ (270)		$ (266)		$ (266)		$ (268)		$ (266)
[1] Due to the nature of the preferred stock issued by FHN and its subsidiaries, all components of other comprehensive income (loss) have been attributed solely to FHN as the controlling interest holder. Due to the nature of the preferred stock issued by FHN and its subsidiaries, all components of other comprehensive income (loss) have been attributed solely to FHN as the controlling interest holder.

Components of Other Comprehen_4

Components of Other Comprehensive Income (Loss) - Schedule of Reclassification from AOCI (Details) - USD ($) $ in Millions	3 Months Ended				6 Months Ended
	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2024	Jun. 30, 2023
Accumulated Other Comprehensive Income (Loss) [Line Items]
Interest and fees on loans and leases	$ 975		$ 877		$ 1,927	$ 1,683
Income tax expense	56		96		113	171
Other expense	45		52		84	96
Amounts reclassified from AOCI	(204)	$ (197)	(329)	$ (255)	(401)	(585)
Reclassification out of Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amounts reclassified from AOCI	15		15		30	28
Reclassification out of Accumulated Other Comprehensive Income | Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss) [Line Items]
Interest and fees on loans and leases	17		17		34	32
Income tax expense	(4)		(4)		(8)	(8)
Amounts reclassified from AOCI	13		13		26	24
Reclassification out of Accumulated Other Comprehensive Income | Pension and Post-retirement Plans
Accumulated Other Comprehensive Income (Loss) [Line Items]
Income tax expense	(1)		0		(2)	(1)
Other expense	3		2		6	5
Amounts reclassified from AOCI	$ 2		$ 2		$ 4	$ 4

Earnings Per Share - Schedule o

Earnings Per Share - Schedule of Reconciliation of Net Income to Net Income Available to Common Shareholders (Details) $ / shares in Units, $ in Millions			3 Months Ended				6 Months Ended
	Jun. 26, 2023 shares	Feb. 28, 2022 USD ($)	Jun. 30, 2024 USD ($) $ / shares shares	Mar. 31, 2024 USD ($)	Jun. 30, 2023 USD ($) $ / shares shares	Mar. 31, 2023 USD ($)	Jun. 30, 2024 USD ($) $ / shares shares	Jun. 30, 2023 USD ($) $ / shares shares
Earnings Per Share [Abstract]
Net income			$ 204	$ 197	$ 329	$ 255	$ 401	$ 585
Net income attributable to noncontrolling interest			5		4		10	9
Net income attributable to controlling interest			199		325		391	576
Preferred stock dividends			15		8		23	16
Net income available to common shareholders			184		317		368	560
Net income available to common shareholders			$ 184		$ 317		$ 368	$ 560
Weighted average common shares outstanding - basic (in shares) | shares			543,981,000		539,120,000		549,479,000	538,035,000
Effect of dilutive restricted stock, performance equity awards and options (in shares) | shares			3,112,000		3,100,000		3,060,000	4,956,000
Effect of dilutive convertible preferred stock (in shares) | shares			0		18,658,000		0	19,197,000
Weighted average common shares outstanding - diluted (in shares) | shares			547,093,000		560,878,000		552,539,000	562,188,000
Basic earnings per common share (in dollars per share) | $ / shares			$ 0.34		$ 0.59		$ 0.67	$ 1.04
Diluted earnings per common share (in dollars per share) | $ / shares			$ 0.34		$ 0.56		$ 0.67	$ 1
TD Transaction | Series G Convertible Preferred Stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Sale of preferred stock, net (approximately)		$ 494
Fixed rate of conversion (in shares)	4,000
Series G preferred stock conversion to common stock (in shares) | shares	19,742,776

Earnings Per Share - Schedule_2

Earnings Per Share - Schedule of Anti-Dilutive Options and Awards (Details) - $ / shares shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Weighted average exercise price of stock options excluded from the calculation of diluted EPS (in dollars per share)	$ 16.48	$ 16.46	$ 16.59	$ 24.36
Employee Stock Option
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Awards excluded from the calculation of diluted EPS (in shares)	1,388	1,942	1,458	0
Other Equity Awards
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Awards excluded from the calculation of diluted EPS (in shares)	6,828	8,676	6,819	3,063

Contingencies and Other Discl_2

Contingencies and Other Disclosures (Details) - USD ($)	Jun. 30, 2024	Dec. 31, 2023
Loss Contingencies [Line Items]
Estimated litigation liability	$ 1,000,000
Accrued losses on loan repurchase exposure	16,000,000	$ 16,000,000
Minimum
Loss Contingencies [Line Items]
Estimated litigation liability	0
Maximum
Loss Contingencies [Line Items]
Estimated litigation liability	$ 1,000,000

Retirement Plans - Narrative (D

Retirement Plans - Narrative (Details) - USD ($) $ in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2024	Dec. 31, 2023
Qualified Plan | Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Estimated social security benefits age	65 years
Nonqualified Plan | Supplemental Employee Retirement Plan
Defined Benefit Plan Disclosure [Line Items]
Pension plan contribution		$ 6
Defined benefit plan, expected future employer contributions, current fiscal year	$ 5

Retirement Plans - Schedule of

Retirement Plans - Schedule of Components of Net Periodic Benefit Cost (Details) - Pension Plan - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Components of net periodic benefit cost
Interest cost	$ 9	$ 8	$ 17	$ 16
Expected return on plan assets	(8)	(8)	(16)	(16)
Actuarial (gain) loss	3	3	6	6
Net periodic benefit cost	$ 4	$ 3	$ 7	$ 6

Business Segment Information -

Business Segment Information - Amounts of Consolidated Revenue, Expense, Tax and Assets by Segment (Details) - USD ($) $ in Millions	3 Months Ended				6 Months Ended
	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2024	Jun. 30, 2023
Disaggregation of Revenue [Line Items]
Net interest income (expense)	$ 629		$ 630		$ 1,253	$ 1,318
Provision for credit losses	55		50		105	100
Noninterest income	186		400		381	571
Noninterest expense	500		555		1,015	1,033
Income (loss) before income taxes	260		425		514	756
Income tax expense (benefit)	56		96		113	171
Net income	204	$ 197	329	$ 255	401	585
Average assets	81,721		82,304		81,482	80,582
Gain on merger termination	0		225		0	225
Regional Banking
Disaggregation of Revenue [Line Items]
Net interest income (expense)	522		585		1,054	1,146
Provision for credit losses	57		36		86	72
Noninterest income	109		106		214	210
Noninterest expense	333		313		657	626
Income (loss) before income taxes	241		342		525	658
Income tax expense (benefit)	56		80		122	154
Net income	185		262		403	504
Average assets	43,519		42,302		43,283	41,800
Gain on merger termination			0			0
Specialty Banking
Disaggregation of Revenue [Line Items]
Net interest income (expense)	158		156		310	307
Provision for credit losses	1		18		23	33
Noninterest income	64		50		137	106
Noninterest expense	103		95		207	195
Income (loss) before income taxes	118		93		217	185
Income tax expense (benefit)	29		23		53	45
Net income	89		70		164	140
Average assets	24,592		23,329		24,194	22,978
Gain on merger termination			0			0
Corporate
Disaggregation of Revenue [Line Items]
Net interest income (expense)	(51)		(111)		(111)	(135)
Provision for credit losses	(3)		(4)		(4)	(5)
Noninterest income	13		244		30	255
Noninterest expense	64		147		151	212
Income (loss) before income taxes	(99)		(10)		(228)	(87)
Income tax expense (benefit)	(29)		(7)		(62)	(28)
Net income	(70)		(3)		(166)	(59)
Average assets	13,610		16,673		14,005	15,804
Restructuring costs	3				9
Special assessment fee	$ 2				$ 12
Gain on merger termination			225			225
Corporate | Visa Shares
Disaggregation of Revenue [Line Items]
Derivative valuation adjustment			15			15
Corporate | First Horizon Foundation
Disaggregation of Revenue [Line Items]
Charitable foundation contributions			50			50
Corporate | TD Transaction
Disaggregation of Revenue [Line Items]
Merger and integration expense			30			51
Gain on merger termination			$ 225			$ 225

Business Segment Information _2

Business Segment Information - Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Noninterest income:
Deposit transactions and cash management	$ 44	$ 45	$ 88	$ 87
Fixed income	40	30	92	69
Brokerage, management fees and commissions	25	22	49	44
Card and digital banking fees	20	21	38	40
Other service charges and fees	14	14	27	27
Trust services and investment management	12	12	24	24
Mortgage banking income	10	6	19	11
Gain on merger termination	0	225	0	225
Securities gains (losses), net	1	0	1	1
Other income	20	25	43	43
Total noninterest income	186	400	381	571
Revenue from contract with customer	9	9
Underwriting, portfolio advisory, and other noninterest income
Noninterest income:
Revenue from contract with customer			20	19
Regional Banking
Noninterest income:
Deposit transactions and cash management	39	40	78	77
Fixed income	0	0	0	0
Brokerage, management fees and commissions	25	22	49	44
Card and digital banking fees	17	18	34	35
Other service charges and fees	6	6	12	13
Trust services and investment management	12	12	24	24
Mortgage banking income	0	0	0	0
Gain on merger termination		0		0
Securities gains (losses), net	0		0	0
Other income	10	8	17	17
Total noninterest income	109	106	214	210
Specialty Banking
Noninterest income:
Deposit transactions and cash management	3	3	6	6
Fixed income	40	31	92	70
Brokerage, management fees and commissions	0	0	0	0
Card and digital banking fees	1	1	1	1
Other service charges and fees	8	8	15	14
Trust services and investment management	0	0	0	0
Mortgage banking income	10	6	19	11
Gain on merger termination		0		0
Securities gains (losses), net	0		0	0
Other income	2	1	4	4
Total noninterest income	64	50	137	106
Corporate
Noninterest income:
Deposit transactions and cash management	2	2	4	4
Fixed income	0	(1)	0	(1)
Brokerage, management fees and commissions	0	0	0	0
Card and digital banking fees	2	2	3	4
Other service charges and fees	0	0	0	0
Trust services and investment management	0	0	0	0
Mortgage banking income	0	0	0	0
Gain on merger termination		225		225
Securities gains (losses), net	1		1	1
Other income	8	16	22	22
Total noninterest income	$ 13	$ 244	$ 30	$ 255

Variable Interest Entities - Sc

Variable Interest Entities - Schedule of VIEs Consolidated by FHN (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Assets
Other assets	$ 4,162	$ 4,169
Liabilities:
Other liabilities	2,368	2,382
Rabbi Trusts used for Deferred Compensation Plans
Assets
Other assets	187	177
Liabilities:
Other liabilities	$ 163	$ 150

Variable Interest Entities - _2

Variable Interest Entities - Schedule of the Impact of Qualifying LIHTC Investments (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Low income housing tax credits
Variable Interest Entity [Line Items]
Amortization of qualifying investments	$ 15	$ 13	$ 30	$ 26
Low income housing tax credits and other tax benefits related to qualifying LIHTC investments	(17)	(14)	(33)	(28)
Other tax benefits related to qualifying LIHTC investments
Variable Interest Entity [Line Items]
Low income housing tax credits and other tax benefits related to qualifying LIHTC investments	$ (3)	$ (3)	$ (5)	$ (5)

Variable Interest Entities - _3

Variable Interest Entities - Schedule of VIEs Not Consolidated by FHN (Details) - USD ($)	Jun. 30, 2024	Dec. 31, 2023
Variable Interest Entity [Line Items]
Liability Recognized	$ 73,275,000,000	$ 72,370,000,000
Trading securities	1,249,000,000	1,412,000,000
Term borrowings	1,175,000,000	1,150,000,000
Securities held to maturity	1,108,000,000	1,161,000,000
Securities available for sale at fair value	7,924,000,000	8,391,000,000
On-balance sheet trust preferred securitization
Variable Interest Entity [Line Items]
Loans and leases	113,000,000	113,000,000
Trading securities	2,000,000	2,000,000
Term borrowings	88,000,000	88,000,000
Holdings of agency mortgage-backed securities
Variable Interest Entity [Line Items]
Trading securities	275,000,000	450,000,000
Securities held to maturity	1,300,000,000	1,300,000,000
Securities available for sale at fair value	6,300,000,000	6,600,000,000
Commercial loan troubled debt restructurings
Variable Interest Entity [Line Items]
Maximum loss exposure, contractual funding commitments		0
Low income housing partnerships
Variable Interest Entity [Line Items]
Maximum loss exposure, contractual funding commitments	194,000,000	223,000,000
Commercial loan modifications to borrowers experiencing financial difficulty
Variable Interest Entity [Line Items]
Maximum loss exposure, contractual funding commitments	0
Other Assets | Commercial loan troubled debt restructurings
Variable Interest Entity [Line Items]
Maximum loss exposure, current investments		129,000,000
Other Assets | Low income housing partnerships
Variable Interest Entity [Line Items]
Maximum loss exposure, current investments	378,000,000	364,000,000
Other Assets | Commercial loan modifications to borrowers experiencing financial difficulty
Variable Interest Entity [Line Items]
Maximum loss exposure, current investments	193,000,000
Low income housing partnerships
Variable Interest Entity [Line Items]
Maximum Loss Exposure	572,000,000	587,000,000
Low income housing partnerships | Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Liability Recognized	194,000,000	223,000,000
Other tax credit investments
Variable Interest Entity [Line Items]
Maximum Loss Exposure	97,000,000	79,000,000
Other tax credit investments | Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Liability Recognized	82,000,000	64,000,000
Small issuer trust preferred holdings
Variable Interest Entity [Line Items]
Maximum Loss Exposure	171,000,000	173,000,000
Small issuer trust preferred holdings | Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Liability Recognized	0	0
On-balance sheet trust preferred securitization
Variable Interest Entity [Line Items]
Maximum Loss Exposure	26,000,000	26,000,000
On-balance sheet trust preferred securitization | Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Liability Recognized	88,000,000	88,000,000
Holdings of agency mortgage-backed securities
Variable Interest Entity [Line Items]
Maximum Loss Exposure	7,823,000,000	8,402,000,000
Holdings of agency mortgage-backed securities | Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Liability Recognized	0	0
Commercial loan modifications to borrowers experiencing financial difficulty
Variable Interest Entity [Line Items]
Maximum Loss Exposure	193,000,000	129,000,000
Commercial loan modifications to borrowers experiencing financial difficulty | Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Liability Recognized	0	0
Proprietary trust preferred issuances
Variable Interest Entity [Line Items]
Maximum Loss Exposure	0	0
Proprietary trust preferred issuances | Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Liability Recognized	$ 167,000,000	$ 167,000,000

Derivatives - Narrative (Detail

Derivatives - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Derivative Instruments, Gain (Loss) [Line Items]
Collateral cash payables	$ 533		$ 533		$ 489
Total trading revenues	31	$ 22	75	$ 49
Hedged amount of foreign currency denominated loans	9		9		17
Additional Derivative Agreements | Derivative Instruments With Adjustable Collateral Posting Thresholds
Derivative Instruments, Gain (Loss) [Line Items]
Net fair value of derivative assets with adjustable posting thresholds	3		3		12
Net fair value of derivative liabilities with adjustable posting thresholds	227		227		188
Collateral received	80		80		95
Securities posted collateral	105		105		83
Additional Derivative Agreements | Derivative Instruments With Accelerated Termination Provisions
Derivative Instruments, Gain (Loss) [Line Items]
Net fair value of derivative assets with adjustable posting thresholds	4		4		12
Net fair value of derivative liabilities with adjustable posting thresholds	227		227		188
Collateral received	81		81		95
Securities posted collateral	105		105		83
Credit Risk Contract
Derivative Instruments, Gain (Loss) [Line Items]
Derivative asset, notional amount	368		368		351
Derivative liability, notional amount	894		894		874
Visa Class B Shares
Derivative Instruments, Gain (Loss) [Line Items]
Derivative liabilities related to sale	18		18		23
Derivative valuation adjustment					15
Counterparties
Derivative Instruments, Gain (Loss) [Line Items]
Collateral cash receivables	648		648		406
Collateral cash payables	$ 22		$ 22		$ 33

Derivatives - Derivatives Assoc

Derivatives - Derivatives Associated with Fixed Income Trading Activities (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Customer interest rate contracts
Derivative Instruments, Gain (Loss) [Line Items]
Notional	$ 4,155	$ 4,067
Assets	7	22
Liabilities	230	197
Offsetting upstream interest rate contracts
Derivative Instruments, Gain (Loss) [Line Items]
Notional	4,328	4,273
Assets	165	135
Liabilities	8	23
Forwards and futures purchased
Derivative Instruments, Gain (Loss) [Line Items]
Notional	1,891	777
Assets	3	9
Liabilities	3	0
Forwards and futures sold
Derivative Instruments, Gain (Loss) [Line Items]
Notional	1,949	912
Assets	3	0
Liabilities	$ 2	$ 9

Derivatives - Derivatives Ass_2

Derivatives - Derivatives Associated with Interest Rate Risk Management Activities (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Customer interest rate contracts
Derivative Instruments, Gain (Loss) [Line Items]
Notional	$ 4,155	$ 4,067
Assets	7	22
Liabilities	230	197
Customer interest rate contracts | Customer Interest Rate Contracts Hedging | Hedging Instruments And Hedged Items
Derivative Instruments, Gain (Loss) [Line Items]
Notional	8,427	8,375
Assets	7	21
Liabilities	456	392
Offsetting upstream interest rate contracts
Derivative Instruments, Gain (Loss) [Line Items]
Notional	4,328	4,273
Assets	165	135
Liabilities	8	23
Offsetting upstream interest rate contracts | Customer Interest Rate Contracts Hedging | Hedging Instruments And Hedged Items
Derivative Instruments, Gain (Loss) [Line Items]
Notional	8,427	8,375
Assets	453	389
Liabilities	$ 8	$ 22

Derivatives - Gains_(Losses) on

Derivatives - Gains/(Losses) on Derivatives Associated with Interest Rate Risk Management Activities (Details) - Customer Interest Rate Contracts Hedging - Hedging Instruments And Hedged Items - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Customer interest rate contracts
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) related to interest rate derivatives	$ 9	$ (130)	$ (77)	$ 31
Offsetting upstream interest rate contracts
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) related to interest rate derivatives	$ (9)	$ 130	$ 77	$ (31)

Derivatives - Derivatives Ass_3

Derivatives - Derivatives Associated with Cash Flow Hedges and Mortgage Banking Hedges (Details) - Hedging Instruments And Hedged Items - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Interest Rate Contract | Cash Flow Hedge
Derivative Instruments, Gain (Loss) [Line Items]
Variability in cash flows related to debt instruments (primarily loans)	$ 5,000	$ 5,200
Interest Rate Swap | Cash Flow Hedge
Derivative Instruments, Gain (Loss) [Line Items]
Notional	5,000	5,200
Assets	0	0
Liabilities	82	32
Option contracts written | Mortgage Banking Hedges
Derivative Instruments, Gain (Loss) [Line Items]
Notional	82	55
Assets	1	1
Liabilities	0	0
Forward contracts written | Mortgage Banking Hedges
Derivative Instruments, Gain (Loss) [Line Items]
Notional	154	93
Assets	1	0
Liabilities	$ 0	$ 1

Derivatives - Gains_(Losses) _2

Derivatives - Gains/(Losses) on Derivatives Associated with Cash Flow Hedges and Mortgage Banking Hedges (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Derivative Instruments, Gain (Loss) [Line Items]
Gain/(loss) expected to be reclassified to earnings in the next twelve months	$ (23)	$ (23)	$ (23)	$ (23)
Cash Flow Hedge | Hedging Instruments And Hedged Items
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses), cash flow hedges	(15)	(59)	(58)	(26)
Gain (loss) reclassified from AOCI into interest income	13	13	26	24
Interest Rate Swap | Cash Flow Hedge | Hedging Instruments And Hedged Items
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses), cash flow hedges	(2)	(66)	(41)	(13)
Option contracts written | Mortgage Banking Hedges | Hedging Instruments And Hedged Items
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) on derivative instruments	1	0	0	2
Forward contracts written | Mortgage Banking Hedges | Hedging Instruments And Hedged Items
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) on derivative instruments	$ 0	$ (2)	$ 1	$ 6

Derivatives - Derivative Assets

Derivatives - Derivative Assets and Collateral Received (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Derivative [Line Items]
Gross amounts of recognized assets	$ 639	$ 576
Gross amounts offset in the Balance Sheets	0	0
Net amounts of assets presented in the Balance Sheets	639	576
Derivative liabilities available for offset	(82)	(79)
Collateral received	(533)	(489)
Net amount	24	8
Derivative assets not subject to master netting agreements	1	1
Interest rate derivative contracts
Derivative [Line Items]
Gross amounts of recognized assets	633	567
Gross amounts offset in the Balance Sheets	0	0
Net amounts of assets presented in the Balance Sheets	633	567
Derivative liabilities available for offset	(79)	(75)
Collateral received	(533)	(486)
Net amount	21	6
Forward contracts
Derivative [Line Items]
Gross amounts of recognized assets	6	9
Gross amounts offset in the Balance Sheets	0	0
Net amounts of assets presented in the Balance Sheets	6	9
Derivative liabilities available for offset	(3)	(4)
Collateral received	0	(3)
Net amount	$ 3	$ 2

Derivatives - Derivative Liabil

Derivatives - Derivative Liabilities and Collateral Pledged (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Derivative [Line Items]
Gross amounts of recognized liabilities	$ 789	$ 675
Gross amounts offset in the Balance Sheets	0	0
Net amounts of liabilities presented in the Balance Sheets	789	675
Derivative assets  available for offset	(82)	(79)
Collateral pledged	(193)	(169)
Net amount	514	427
Derivative liabilities not subject to master netting agreements	19	24
Interest rate derivative contracts
Derivative [Line Items]
Gross amounts of recognized liabilities	784	666
Gross amounts offset in the Balance Sheets	0	0
Net amounts of liabilities presented in the Balance Sheets	784	666
Derivative assets  available for offset	(79)	(75)
Collateral pledged	(193)	(164)
Net amount	512	427
Forward contracts
Derivative [Line Items]
Gross amounts of recognized liabilities	5	9
Gross amounts offset in the Balance Sheets	0	0
Net amounts of liabilities presented in the Balance Sheets	5	9
Derivative assets  available for offset	(3)	(4)
Collateral pledged	0	(5)
Net amount	$ 2	$ 0

Master Netting and Similar Ag_3

Master Netting and Similar Agreements—Repurchase, Reverse Repurchase, and Securities Borrowing Transactions - Securities Purchased under Agreements to Resell and Collateral Pledged by Counterparties (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Securities Purchased under Agreements to Resell [Abstract]
Gross amounts of recognized assets	$ 424	$ 519
Gross amounts offset in the Balance Sheets	0	0
Net amounts of assets presented in the Balance Sheets	424	519
Offsetting securities sold under agreements to repurchase	0	0
Securities collateral (not recognized on FHN’s Balance Sheets)	(418)	(516)
Net amount	$ 6	$ 3

Master Netting and Similar Ag_4

Master Netting and Similar Agreements—Repurchase, Reverse Repurchase, and Securities Borrowing Transactions - Securities Sold under Agreements to Repurchase and Collateral Pledged by Company (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Securities Sold under Agreements to Repurchase [Abstract]
Gross amounts of recognized liabilities	$ 1,948	$ 1,921
Gross amounts offset in the Balance Sheets	0	0
Net amounts of liabilities presented in the Balance Sheets	1,948	1,921
Offsetting securities purchased under agreements to resell	0	0
Securities/ government guaranteed loans collateral	(1,948)	(1,921)
Net amount	$ 0	$ 0

Master Netting and Similar Ag_5

Master Netting and Similar Agreements—Repurchase, Reverse Repurchase, and Securities Borrowing Transactions - Schedule of the Remaining Contractual Maturity by Collateral Type of Securities Sold under Agreements to Repurchase (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Securities sold under agreements to repurchase	$ 1,948	$ 1,921
Government agency issued MBS
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Securities sold under agreements to repurchase	1,579	1,717
Government agency issued CMO
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Securities sold under agreements to repurchase	326	161
Other U.S. government agencies
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Securities sold under agreements to repurchase	43	43
Overnight and Continuous
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Securities sold under agreements to repurchase	1,948	1,921
Overnight and Continuous | Government agency issued MBS
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Securities sold under agreements to repurchase	1,579	1,717
Overnight and Continuous | Government agency issued CMO
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Securities sold under agreements to repurchase	326	161
Overnight and Continuous | Other U.S. government agencies
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Securities sold under agreements to repurchase	43	43
Up to 30 Days
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Securities sold under agreements to repurchase	0	0
Up to 30 Days | Government agency issued MBS
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Securities sold under agreements to repurchase	0	0
Up to 30 Days | Government agency issued CMO
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Securities sold under agreements to repurchase	0	0
Up to 30 Days | Other U.S. government agencies
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Securities sold under agreements to repurchase	$ 0	$ 0

Fair Value of Assets and Liab_3

Fair Value of Assets and Liabilities - Schedule of Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Trading securities	$ 1,249	$ 1,412
Loans held-for-sale	117	68
Securities available for sale at fair value	7,924	8,391
Recurring
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Loans held-for-sale	117	68
Securities available for sale at fair value	7,924	8,391
Total other assets	781	713
Total assets	10,071	10,584
Total other liabilities	808	699
Total liabilities	1,231	1,208
Recurring | Deferred compensation mutual funds
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total other assets	107	102
Recurring | Equity, mutual funds, and other
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total other assets	34	34
Recurring | Derivatives, forwards and futures
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total other assets	6	9
Total other liabilities	5	10
Recurring | Derivatives, interest rate contracts
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total other assets	634	568
Total other liabilities	785	666
Recurring | Derivatives, other
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total other liabilities	18	23
Level 1 | Recurring
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Loans held-for-sale	0	0
Securities available for sale at fair value	0	0
Total other assets	147	145
Total assets	147	145
Total other liabilities	5	10
Total liabilities	5	10
Level 1 | Recurring | Deferred compensation mutual funds
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total other assets	107	102
Level 1 | Recurring | Equity, mutual funds, and other
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total other assets	34	34
Level 1 | Recurring | Derivatives, forwards and futures
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total other assets	6	9
Total other liabilities	5	10
Level 1 | Recurring | Derivatives, interest rate contracts
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total other assets	0	0
Total other liabilities	0	0
Level 1 | Recurring | Derivatives, other
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total other liabilities	0	0
Level 2 | Recurring
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Loans held-for-sale	102	42
Securities available for sale at fair value	7,924	8,391
Total other assets	634	568
Total assets	9,893	10,400
Total other liabilities	785	666
Total liabilities	1,208	1,175
Level 2 | Recurring | Deferred compensation mutual funds
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total other assets	0	0
Level 2 | Recurring | Equity, mutual funds, and other
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total other assets	0	0
Level 2 | Recurring | Derivatives, forwards and futures
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total other assets	0	0
Total other liabilities	0	0
Level 2 | Recurring | Derivatives, interest rate contracts
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total other assets	634	568
Total other liabilities	785	666
Level 2 | Recurring | Derivatives, other
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total other liabilities	0	0
Level 3 | Recurring
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Loans held-for-sale	15	26
Securities available for sale at fair value	0	0
Total other assets	0	0
Total assets	31	39
Total other liabilities	18	23
Total liabilities	18	23
Level 3 | Recurring | Deferred compensation mutual funds
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total other assets	0	0
Level 3 | Recurring | Equity, mutual funds, and other
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total other assets	0	0
Level 3 | Recurring | Derivatives, forwards and futures
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total other assets	0	0
Total other liabilities	0	0
Level 3 | Recurring | Derivatives, interest rate contracts
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total other assets	0	0
Total other liabilities	0	0
Level 3 | Recurring | Derivatives, other
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total other liabilities	18	23
Specialty Banking | Recurring
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Trading securities	1,249	1,412
Total trading liabilities	423	509
Specialty Banking | Level 1 | Recurring
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Trading securities	0	0
Total trading liabilities	0	0
Specialty Banking | Level 2 | Recurring
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Trading securities	1,233	1,399
Total trading liabilities	423	509
Specialty Banking | Level 3 | Recurring
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Trading securities	16	13
Total trading liabilities	0	0
U.S. treasuries | Specialty Banking | Recurring
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Trading securities	12	3
Total trading liabilities	342	426
U.S. treasuries | Specialty Banking | Level 1 | Recurring
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Trading securities	0	0
Total trading liabilities	0	0
U.S. treasuries | Specialty Banking | Level 2 | Recurring
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Trading securities	12	3
Total trading liabilities	342	426
U.S. treasuries | Specialty Banking | Level 3 | Recurring
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Trading securities	0	0
Total trading liabilities	0	0
Government agency issued MBS | Recurring
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Securities available for sale at fair value	4,231	4,484
Government agency issued MBS | Level 1 | Recurring
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Securities available for sale at fair value	0	0
Government agency issued MBS | Level 2 | Recurring
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Securities available for sale at fair value	4,231	4,484
Government agency issued MBS | Level 3 | Recurring
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Securities available for sale at fair value	0	0
Government agency issued MBS | Specialty Banking | Recurring
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Trading securities	83	114
Total trading liabilities		1
Government agency issued MBS | Specialty Banking | Level 1 | Recurring
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Trading securities	0	0
Total trading liabilities		0
Government agency issued MBS | Specialty Banking | Level 2 | Recurring
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Trading securities	83	114
Total trading liabilities		1
Government agency issued MBS | Specialty Banking | Level 3 | Recurring
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Trading securities	0	0
Total trading liabilities		0
Government agency issued CMO | Recurring
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Securities available for sale at fair value	2,020	2,146
Government agency issued CMO | Level 1 | Recurring
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Securities available for sale at fair value	0	0
Government agency issued CMO | Level 2 | Recurring
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Securities available for sale at fair value	2,020	2,146
Government agency issued CMO | Level 3 | Recurring
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Securities available for sale at fair value	0	0
Government agency issued CMO | Specialty Banking | Recurring
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Trading securities	192	336
Government agency issued CMO | Specialty Banking | Level 1 | Recurring
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Trading securities	0	0
Government agency issued CMO | Specialty Banking | Level 2 | Recurring
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Trading securities	192	336
Government agency issued CMO | Specialty Banking | Level 3 | Recurring
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Trading securities	0	0
Other U.S. government agencies | Recurring
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Securities available for sale at fair value	1,118	1,172
Other U.S. government agencies | Level 1 | Recurring
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Securities available for sale at fair value	0	0
Other U.S. government agencies | Level 2 | Recurring
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Securities available for sale at fair value	1,118	1,172
Other U.S. government agencies | Level 3 | Recurring
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Securities available for sale at fair value	0	0
Other U.S. government agencies | Specialty Banking | Recurring
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Trading securities	116	152
Other U.S. government agencies | Specialty Banking | Level 1 | Recurring
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Trading securities	0	0
Other U.S. government agencies | Specialty Banking | Level 2 | Recurring
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Trading securities	116	152
Other U.S. government agencies | Specialty Banking | Level 3 | Recurring
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Trading securities	0	0
States and municipalities | Recurring
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Securities available for sale at fair value	555	589
States and municipalities | Level 1 | Recurring
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Securities available for sale at fair value	0	0
States and municipalities | Level 2 | Recurring
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Securities available for sale at fair value	555	589
States and municipalities | Level 3 | Recurring
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Securities available for sale at fair value	0	0
States and municipalities | Specialty Banking | Recurring
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Trading securities	31	17
States and municipalities | Specialty Banking | Level 1 | Recurring
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Trading securities	0	0
States and municipalities | Specialty Banking | Level 2 | Recurring
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Trading securities	31	17
States and municipalities | Specialty Banking | Level 3 | Recurring
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Trading securities	0	0
Corporate and other debt | Specialty Banking | Recurring
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Trading securities	799	777
Total trading liabilities	81	82
Corporate and other debt | Specialty Banking | Level 1 | Recurring
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Trading securities	0	0
Total trading liabilities	0	0
Corporate and other debt | Specialty Banking | Level 2 | Recurring
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Trading securities	799	777
Total trading liabilities	81	82
Corporate and other debt | Specialty Banking | Level 3 | Recurring
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Trading securities	0	0
Total trading liabilities	0	0
Interest-only strips | Specialty Banking | Recurring
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Trading securities	16	13
Interest-only strips | Specialty Banking | Level 1 | Recurring
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Trading securities	0	0
Interest-only strips | Specialty Banking | Level 2 | Recurring
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Trading securities	0	0
Interest-only strips | Specialty Banking | Level 3 | Recurring
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Trading securities	$ 16	$ 13

Fair Value of Assets and Liab_4

Fair Value of Assets and Liabilities - Schedule of Changes in Level 3 Assets and Liabilities Measured at Fair Value (Details) - Level 3 - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Net  derivative liabilities
Beginning balance	$ (20)	$ (21)	$ (23)	$ (27)
Total net gains (losses) included in net income	0	(15)	0	(15)
Purchases	0	0	0	0
Sales	0	0	0	0
Settlements	2	2	5	8
Net transfers into (out of) Level 3	0	0	0	0
Ending balance	(18)	(34)	(18)	(34)
Net unrealized gains (losses) included in net income	0	(15)	0	(15)
Interest-only strips
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	19	28	13	25
Total net gains (losses) included in net income	(1)	(3)	(2)	(6)
Purchases	0	0	0	0
Sales	(8)	(5)	(10)	(8)
Settlements	0	0	0	0
Net transfers into (out of) Level 3	6	16	15	25
Ending balance	16	36	16	36
Net unrealized gains (losses) included in net income	0	(2)	(1)	(3)
Loans held for sale
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	14	21	26	22
Total net gains (losses) included in net income	0	0	0	0
Purchases	1	1	2	2
Sales	0	0	(13)	(2)
Settlements	(1)	0	(1)	0
Net transfers into (out of) Level 3	1	0	1	0
Ending balance	15	22	15	22
Net unrealized gains (losses) included in net income	$ 0	$ 0	$ 0	$ 0

Fair Value of Assets and Liab_5

Fair Value of Assets and Liabilities - Narrative (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Segment Reporting Information [Line Items]
Leased asset impairments	$ 0	$ 1,000,000	$ 0	$ 1,000,000
Fixed asset impairments	$ 0	$ 0	0	0
Level 3
Segment Reporting Information [Line Items]
Fair value, asset (liability), unrealized gain (loss), OCI			$ 0	$ 0

Fair Value of Assets and Liab_6

Fair Value of Assets and Liabilities - Nonrecurring Fair Value Measurements (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held-for-sale	$ 117	$ 68
Loans and leases	62,781	61,292
Non Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans and leases	308	245
OREO	4	4
Other assets		90
Level 1 | Non Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans and leases	0	0
OREO	0	0
Other assets		0
Level 2 | Non Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans and leases	0	0
OREO	0	0
Other assets		0
Level 3 | Non Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans and leases	308	245
OREO	4	4
Other assets		90
Loans held for sale—SBAs and USDA | Non Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held-for-sale	327	406
Loans held for sale—SBAs and USDA | Level 1 | Non Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held-for-sale	0	0
Loans held for sale—SBAs and USDA | Level 2 | Non Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held-for-sale	327	406
Loans held for sale—SBAs and USDA | Level 3 | Non Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held-for-sale	$ 0	$ 0

Fair Value of Assets and Liab_7

Fair Value of Assets and Liabilities - Gains/(losses) on Nonrecurring Fair Value Measurements (Details) - Non Recurring - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net gains/(losses), loans and leases	$ (31)	$ (19)	$ (56)	$ (23)
Net gains/(losses), other assets	0	(1)	0	(1)
Gains (losses) on financial assets measured on non-recurring basis	(32)	(21)	(57)	(26)
SBAs
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net gains/(losses), loans held for sale - SBAs and USDA	$ (1)	$ (1)	$ (1)	$ (2)

Fair Value of Assets and Liab_8

Fair Value of Assets and Liabilities - Schedule of Unobservable Inputs Utilized in Determining the Fair Value of Level 3 Recurring and Non-Recurring Measurements (Details) $ in Millions	Jun. 30, 2024 USD ($) month	Dec. 31, 2023 USD ($) month
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale at fair value	$ 7,924	$ 8,391
Loans held-for-sale	117	68
Derivative Liabilities, fair value	789	675
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Liabilities, fair value	18	23
Loans and leases, fair value	308	245
OREO, fair value	4	4
Level 3 | Minimum | Visa covered litigation resolution amount | Discounted cash flow
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liabilities, measurement input, value	$ 1,800	$ 5,700
Level 3 | Minimum | Probability of resolution scenarios | Discounted cash flow
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liabilities, measurement input	0.10	0.10
Level 3 | Minimum | Time until resolution | Discounted cash flow
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liabilities, measurement input | month	6	6
Level 3 | Minimum | Marketability adjustments for specific properties | Appraisals from comparable properties
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans and leases, measurement input	0	0
Level 3 | Minimum | Borrowing base certificates liquidation adjustment | Other collateral valuations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans and leases, measurement input	0.25	0.25
Level 3 | Minimum | Financial Statements liquidation adjustment | Other collateral valuations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans and leases, measurement input	0.50	0.50
Level 3 | Minimum | Auction appraisals marketability adjustment | Other collateral valuations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans and leases, measurement input	0	0
Level 3 | Minimum | Adjustment for value changes since appraisal | Appraisals from comparable properties
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
OREO measurement input	0	0
Level 3 | Maximum | Visa covered litigation resolution amount | Discounted cash flow
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liabilities, measurement input, value	$ 2,800	$ 6,700
Level 3 | Maximum | Probability of resolution scenarios | Discounted cash flow
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liabilities, measurement input	0.20	0.25
Level 3 | Maximum | Time until resolution | Discounted cash flow
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liabilities, measurement input | month	36	36
Level 3 | Maximum | Marketability adjustments for specific properties | Appraisals from comparable properties
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans and leases, measurement input	0.25	0.25
Level 3 | Maximum | Borrowing base certificates liquidation adjustment | Other collateral valuations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans and leases, measurement input	0.50	0.50
Level 3 | Maximum | Financial Statements liquidation adjustment | Other collateral valuations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans and leases, measurement input	1	1
Level 3 | Maximum | Auction appraisals marketability adjustment | Other collateral valuations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans and leases, measurement input	0.10	0.10
Level 3 | Maximum | Adjustment for value changes since appraisal | Appraisals from comparable properties
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
OREO measurement input	0.10	0.10
Level 3 | Weighted Average | Visa covered litigation resolution amount | Discounted cash flow
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liabilities, measurement input, value	$ 2,500	$ 6,300
Level 3 | Weighted Average | Probability of resolution scenarios | Discounted cash flow
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liabilities, measurement input	0.18	0.18
Level 3 | Weighted Average | Time until resolution | Discounted cash flow
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liabilities, measurement input | month	25	24
Level 3 | Loans Held For Sale, Residential Real Estate | Residential Real Estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held-for-sale	$ 15	$ 26
Level 3 | Loans Held For Sale, Residential Real Estate | Minimum | Prepayment speeds - First mortgage | Discounted cash flow | Loans held for sale—first mortgages
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held-for-sale, measurement input	0.02	0.02
Level 3 | Loans Held For Sale, Residential Real Estate | Minimum | Foreclosure losses | Discounted cash flow | Residential Real Estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held-for-sale, measurement input	0.64	0.64
Level 3 | Loans Held For Sale, Residential Real Estate | Minimum | Loss severity trends - First mortgage | Discounted cash flow | Loans held for sale—first mortgages
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held-for-sale, measurement input	0	0
Level 3 | Loans Held For Sale, Residential Real Estate | Maximum | Prepayment speeds - First mortgage | Discounted cash flow | Loans held for sale—first mortgages
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held-for-sale, measurement input	0.06	0.07
Level 3 | Loans Held For Sale, Residential Real Estate | Maximum | Foreclosure losses | Discounted cash flow | Residential Real Estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held-for-sale, measurement input	0.65	0.68
Level 3 | Loans Held For Sale, Residential Real Estate | Maximum | Loss severity trends - First mortgage | Discounted cash flow | Loans held for sale—first mortgages
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held-for-sale, measurement input	0.02	0.03
Level 3 | Loans Held For Sale, Residential Real Estate | Weighted Average | Prepayment speeds - First mortgage | Discounted cash flow | Loans held for sale—first mortgages
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held-for-sale, measurement input	0.03	0.03
Level 3 | Loans Held For Sale, Residential Real Estate | Weighted Average | Foreclosure losses | Discounted cash flow | Residential Real Estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held-for-sale, measurement input	0.65	0.65
Level 3 | Loans Held For Sale, Residential Real Estate | Weighted Average | Loss severity trends - First mortgage | Discounted cash flow | Loans held for sale—first mortgages
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held-for-sale, measurement input	0.01	0.02
Level 3 | Other Assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other assets		$ 90
Level 3 | Other Assets | Minimum | Marketability adjustments for specific properties | Appraisals from comparable properties
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other assets, measurement input		0
Level 3 | Other Assets | Minimum | Measurement Input, Adjustments To Current Sales Yields For Specific Properties | Discounted cash flow
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other assets, measurement input		0
Level 3 | Other Assets | Maximum | Marketability adjustments for specific properties | Appraisals from comparable properties
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other assets, measurement input		0.25
Level 3 | Other Assets | Maximum | Measurement Input, Adjustments To Current Sales Yields For Specific Properties | Discounted cash flow
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other assets, measurement input		0.15
Interest-only strips | Level 3 | Trading Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale at fair value	$ 16	$ 13
Interest-only strips | Level 3 | Trading Securities | Minimum | Constant prepayment rate | Discounted cash flow
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities, available-for-sale, measurement input	0.14	0.14
Interest-only strips | Level 3 | Trading Securities | Minimum | Bond equivalent yield | Discounted cash flow
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities, available-for-sale, measurement input	0.10	0.18
Interest-only strips | Level 3 | Trading Securities | Maximum | Constant prepayment rate | Discounted cash flow
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities, available-for-sale, measurement input	0.20	0.15
Interest-only strips | Level 3 | Trading Securities | Maximum | Bond equivalent yield | Discounted cash flow
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities, available-for-sale, measurement input	0.19	0.21
Interest-only strips | Level 3 | Trading Securities | Weighted Average | Constant prepayment rate | Discounted cash flow
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities, available-for-sale, measurement input	0.15	0.14
Interest-only strips | Level 3 | Trading Securities | Weighted Average | Bond equivalent yield | Discounted cash flow
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities, available-for-sale, measurement input	0.18	0.18

Fair Value of Assets and Liab_9

Fair Value of Assets and Liabilities - Schedule of Differences between the Fair Value Carrying Amount of Mortgages Held-for-sale and Aggregate Unpaid Principal Amount (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Loans held-for-sale	$ 117	$ 68
Held for sale
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Loans held-for-sale	117	68
Fair value carrying amount less aggregate unpaid principal - Total loans	(4)	(5)
Nonaccrual loans	3	2
Fair value carrying amount less aggregate unpaid principal - Nonaccrual loans	(2)	(3)
Loans 90 days or more past due and still accruing	1	1
Fair value carrying amount less aggregate unpaid principal - Loans 90 days or more past due and still accruing	0	0
Held for sale | Aggregate unpaid principal
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Loans held-for-sale	121	73
Nonaccrual loans	5	5
Loans 90 days or more past due and still accruing	$ 1	$ 1

Fair Value of Assets and Lia_10

Fair Value of Assets and Liabilities - Changes in Fair Value of Assets and Liabilities which Fair Value Option Included in Current Period Earnings (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Mortgage banking noninterest income | Loans held for sale
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Changes in fair value included in net income	$ 1	$ 0	$ 1	$ 1

Fair Value of Assets and Lia_11

Fair Value of Assets and Liabilities - Schedule of Book Value and Estimated Fair Value of Financial Instruments (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net loans and leases	$ 61,960	$ 60,519
Short-term financial assets:
Interest-bearing deposits with banks	1,452	1,328
Securities purchased under agreements to resell	424	519
Trading securities	1,249	1,412
Loans held for sale:	471	502
Securities available for sale at fair value	7,924	8,391
Securities held to maturity	1,297	1,323
Derivative assets	639	576
Other assets:
Total assets	82,230	81,661
Liabilities:
Trading liabilities	423	509
Short-term financial liabilities:
Securities sold under agreements to repurchase	1,948	1,921
Term borrowings:
Other long-term borrowings	1,175	1,150
Derivative liabilities	789	675
Total liabilities	73,275	72,370
Fair Value, Inputs, Level 3 | FHLB-Cincinnati Stock
Term borrowings:
Restricted investments	86	24
Fair Value, Inputs, Level 3 | FRB Stock
Term borrowings:
Restricted investments	203	203
Reported Value Measurement
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net loans and leases	61,960	60,519
Short-term financial assets:
Interest-bearing deposits with banks	1,452	1,328
Federal funds sold	63	200
Securities purchased under agreements to resell	424	519
Total short-term financial assets	1,939	2,047
Trading securities	1,249	1,412
Loans held for sale:	471	502
Securities available for sale at fair value	7,924	8,391
Securities held to maturity	1,297	1,323
Derivative assets	640	577
Other assets:
Tax credit investments	668	665
Deferred compensation mutual funds	107	102
Equity, mutual funds, and other	323	261
Total other assets	1,098	1,028
Total assets	76,578	75,799
Liabilities:
Defined maturity deposits	7,163	6,804
Trading liabilities	423	509
Short-term financial liabilities:
Federal funds purchased	624	302
Securities sold under agreements to repurchase	1,948	1,921
Other short-term borrowings	1,943	326
Total short-term financial liabilities	4,515	2,549
Term borrowings:
Real estate investment trust-preferred	47	47
Term borrowings—new market tax credit investment	83	65
Secured borrowings	9	3
Junior subordinated debentures	151	150
Other long-term borrowings	885	885
Total term borrowings	1,175	1,150
Derivative liabilities	808	699
Total liabilities	14,084	11,711
Reported Value Measurement | Commercial, financial and industrial
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net loans and leases	33,108	32,294
Reported Value Measurement | Commercial Real Estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net loans and leases	14,448	14,044
Reported Value Measurement | Consumer Real Estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net loans and leases	13,678	13,417
Reported Value Measurement | Credit card and other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net loans and leases	726	764
Reported Value Measurement | Mortgage loans (elected fair value)
Short-term financial assets:
Loans held for sale:	117	68
Reported Value Measurement | USDA & SBA loans - LOCOM
Short-term financial assets:
Loans held for sale:	327	406
Reported Value Measurement | Mortgage loans - LOCOM
Short-term financial assets:
Loans held for sale:	27	28
Estimate of Fair Value Measurement
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net loans and leases	60,362	58,851
Short-term financial assets:
Interest-bearing deposits with banks	1,452	1,328
Federal funds sold	63	200
Securities purchased under agreements to resell	424	519
Total short-term financial assets	1,939	2,047
Trading securities	1,249	1,412
Loans held for sale:	471	503
Securities available for sale at fair value	7,924	8,391
Securities held to maturity	1,108	1,161
Derivative assets	640	577
Other assets:
Tax credit investments	656	653
Deferred compensation mutual funds	107	102
Equity, mutual funds, and other	323	261
Total other assets	1,086	1,016
Total assets	74,779	73,958
Liabilities:
Defined maturity deposits	7,205	6,851
Trading liabilities	423	509
Short-term financial liabilities:
Federal funds purchased	624	302
Securities sold under agreements to repurchase	1,948	1,921
Other short-term borrowings	1,943	326
Total short-term financial liabilities	4,515	2,549
Term borrowings:
Real estate investment trust-preferred	47	47
Term borrowings—new market tax credit investment	78	60
Secured borrowings	9	3
Junior subordinated debentures	150	150
Other long-term borrowings	847	824
Total term borrowings	1,131	1,084
Derivative liabilities	808	699
Total liabilities	14,082	11,692
Unfunded Commitments [Abstract]
Loan commitments	1	1
Standby and other commitments	7	8
Estimate of Fair Value Measurement | Fair Value, Inputs, Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net loans and leases	0	0
Short-term financial assets:
Interest-bearing deposits with banks	1,452	1,328
Federal funds sold	0	0
Securities purchased under agreements to resell	0	0
Total short-term financial assets	1,452	1,328
Trading securities	0	0
Loans held for sale:	0	0
Securities available for sale at fair value	0	0
Securities held to maturity	0	0
Derivative assets	6	9
Other assets:
Tax credit investments	0	0
Deferred compensation mutual funds	107	102
Equity, mutual funds, and other	34	34
Total other assets	141	136
Total assets	1,599	1,473
Liabilities:
Defined maturity deposits	0	0
Trading liabilities	0	0
Short-term financial liabilities:
Federal funds purchased	0	0
Securities sold under agreements to repurchase	0	0
Other short-term borrowings	0	0
Total short-term financial liabilities	0	0
Term borrowings:
Real estate investment trust-preferred	0	0
Term borrowings—new market tax credit investment	0	0
Secured borrowings	0	0
Junior subordinated debentures	0	0
Other long-term borrowings	0	0
Total term borrowings	0	0
Derivative liabilities	5	10
Total liabilities	5	10
Estimate of Fair Value Measurement | Fair Value, Inputs, Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net loans and leases	0	0
Short-term financial assets:
Interest-bearing deposits with banks	0	0
Federal funds sold	63	200
Securities purchased under agreements to resell	424	519
Total short-term financial assets	487	719
Trading securities	1,233	1,399
Loans held for sale:	429	449
Securities available for sale at fair value	7,924	8,391
Securities held to maturity	1,108	1,161
Derivative assets	634	568
Other assets:
Tax credit investments	0	0
Deferred compensation mutual funds	0	0
Equity, mutual funds, and other	0	0
Total other assets	0	0
Total assets	11,815	12,687
Liabilities:
Defined maturity deposits	7,205	6,851
Trading liabilities	423	509
Short-term financial liabilities:
Federal funds purchased	624	302
Securities sold under agreements to repurchase	1,948	1,921
Other short-term borrowings	1,943	326
Total short-term financial liabilities	4,515	2,549
Term borrowings:
Real estate investment trust-preferred	0	0
Term borrowings—new market tax credit investment	0	0
Secured borrowings	0	0
Junior subordinated debentures	0	0
Other long-term borrowings	847	824
Total term borrowings	847	824
Derivative liabilities	785	666
Total liabilities	13,775	11,399
Estimate of Fair Value Measurement | Fair Value, Inputs, Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net loans and leases	60,362	58,851
Short-term financial assets:
Interest-bearing deposits with banks	0	0
Federal funds sold	0	0
Securities purchased under agreements to resell	0	0
Total short-term financial assets	0	0
Trading securities	16	13
Loans held for sale:	42	54
Securities available for sale at fair value	0	0
Securities held to maturity	0	0
Derivative assets	0	0
Other assets:
Tax credit investments	656	653
Deferred compensation mutual funds	0	0
Equity, mutual funds, and other	289	227
Total other assets	945	880
Total assets	61,365	59,798
Liabilities:
Defined maturity deposits	0	0
Trading liabilities	0	0
Short-term financial liabilities:
Federal funds purchased	0	0
Securities sold under agreements to repurchase	0	0
Other short-term borrowings	0	0
Total short-term financial liabilities	0	0
Term borrowings:
Real estate investment trust-preferred	47	47
Term borrowings—new market tax credit investment	78	60
Secured borrowings	9	3
Junior subordinated debentures	150	150
Other long-term borrowings	0	0
Total term borrowings	284	260
Derivative liabilities	18	23
Total liabilities	302	283
Estimate of Fair Value Measurement | Commercial, financial and industrial
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net loans and leases	32,427	31,673
Estimate of Fair Value Measurement | Commercial, financial and industrial | Fair Value, Inputs, Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net loans and leases	0	0
Estimate of Fair Value Measurement | Commercial, financial and industrial | Fair Value, Inputs, Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net loans and leases	0	0
Estimate of Fair Value Measurement | Commercial, financial and industrial | Fair Value, Inputs, Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net loans and leases	32,427	31,673
Estimate of Fair Value Measurement | Commercial Real Estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net loans and leases	14,214	13,831
Estimate of Fair Value Measurement | Commercial Real Estate | Fair Value, Inputs, Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net loans and leases	0	0
Estimate of Fair Value Measurement | Commercial Real Estate | Fair Value, Inputs, Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net loans and leases	0	0
Estimate of Fair Value Measurement | Commercial Real Estate | Fair Value, Inputs, Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net loans and leases	14,214	13,831
Estimate of Fair Value Measurement | Consumer Real Estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net loans and leases	13,004	12,605
Estimate of Fair Value Measurement | Consumer Real Estate | Fair Value, Inputs, Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net loans and leases	0	0
Estimate of Fair Value Measurement | Consumer Real Estate | Fair Value, Inputs, Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net loans and leases	0	0
Estimate of Fair Value Measurement | Consumer Real Estate | Fair Value, Inputs, Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net loans and leases	13,004	12,605
Estimate of Fair Value Measurement | Credit card and other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net loans and leases	717	742
Estimate of Fair Value Measurement | Credit card and other | Fair Value, Inputs, Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net loans and leases	0	0
Estimate of Fair Value Measurement | Credit card and other | Fair Value, Inputs, Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net loans and leases	0	0
Estimate of Fair Value Measurement | Credit card and other | Fair Value, Inputs, Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net loans and leases	717	742
Estimate of Fair Value Measurement | Mortgage loans (elected fair value)
Short-term financial assets:
Loans held for sale:	117	68
Estimate of Fair Value Measurement | Mortgage loans (elected fair value) | Fair Value, Inputs, Level 1
Short-term financial assets:
Loans held for sale:	0	0
Estimate of Fair Value Measurement | Mortgage loans (elected fair value) | Fair Value, Inputs, Level 2
Short-term financial assets:
Loans held for sale:	102	42
Estimate of Fair Value Measurement | Mortgage loans (elected fair value) | Fair Value, Inputs, Level 3
Short-term financial assets:
Loans held for sale:	15	26
Estimate of Fair Value Measurement | USDA & SBA loans - LOCOM
Short-term financial assets:
Loans held for sale:	327	407
Estimate of Fair Value Measurement | USDA & SBA loans - LOCOM | Fair Value, Inputs, Level 1
Short-term financial assets:
Loans held for sale:	0	0
Estimate of Fair Value Measurement | USDA & SBA loans - LOCOM | Fair Value, Inputs, Level 2
Short-term financial assets:
Loans held for sale:	327	407
Estimate of Fair Value Measurement | USDA & SBA loans - LOCOM | Fair Value, Inputs, Level 3
Short-term financial assets:
Loans held for sale:	0	0
Estimate of Fair Value Measurement | Mortgage loans - LOCOM
Short-term financial assets:
Loans held for sale:	27	28
Estimate of Fair Value Measurement | Mortgage loans - LOCOM | Fair Value, Inputs, Level 1
Short-term financial assets:
Loans held for sale:	0	0
Estimate of Fair Value Measurement | Mortgage loans - LOCOM | Fair Value, Inputs, Level 2
Short-term financial assets:
Loans held for sale:	0	0
Estimate of Fair Value Measurement | Mortgage loans - LOCOM | Fair Value, Inputs, Level 3
Short-term financial assets:
Loans held for sale:	27	28
Contractual Amount
Unfunded Commitments [Abstract]
Loan commitments	21,990	24,579
Standby and other commitments	$ 752	$ 746