10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

☑ Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

For the Quarterly Period Ended March 31, 2024

or

☐ Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

For the transition period from ____ to ____

Commission File No. 1-13653

AMERICAN FINANCIAL GROUP, INC.

Incorporated under the Laws of Ohio                                                                IRS Employer I.D. No. 31-1544320

301 East Fourth Street, Cincinnati, Ohio 45202

(513) 579-2121

Securities Registered Pursuant to Section 12(b) of the Act:
	Title of Each Class	Trading Symbol(s)	Name of Each Exchange on Which Registered
	Common Stock	AFG	New York Stock Exchange
	5.875% Subordinated Debentures due March 30, 2059	AFGB	New York Stock Exchange
	5.625% Subordinated Debentures due June 1, 2060	AFGD	New York Stock Exchange
	5.125% Subordinated Debentures due December 15, 2059	AFGC	New York Stock Exchange
	4.50% Subordinated Debentures due September 15, 2060	AFGE	New York Stock Exchange

Indicate by check mark whether the Registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months, and (2) has been subject to such filing requirements for the past 90 days. Yes ☑ No ☐

Indicate by check mark whether the Registrant has submitted electronically, every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T during the preceding 12 months. Yes ☑ No ☐

Indicate by check mark whether the Registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company or an emerging growth company. See definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer  ☑                        Accelerated filer  ☐                         Non-accelerated filer  ☐

Smaller reporting company  ☐                   Emerging growth company  ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Indicate by check mark whether the Registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ☐ No ☑

As of May 1, 2024, there were 83,866,972 shares of the Registrant’s Common Stock outstanding, excluding 14.9 million shares owned by subsidiaries.

AMERICAN FINANCIAL GROUP, INC. 10-Q

TABLE OF CONTENTS

	Page
Part I — Financial Information
Item 1 — Financial Statements:
Consolidated Balance Sheet	2
Consolidated Statement of Earnings	3
Consolidated Statement of Comprehensive Income	4
Consolidated Statement of Changes in Equity	5
Consolidated Statement of Cash Flows	6
Notes to Consolidated Financial Statements	7
Item 2 — Management’s Discussion and Analysis of Financial Condition and Results of Operations	29
Item 3 — Quantitative and Qualitative Disclosure about Market Risk	52
Item 4 — Controls and Procedures	52
Part II — Other Information
Item 2 — Unregistered Sales of Equity Securities and Use of Proceeds	53
Item 5 — Other Information	53
Item 6 — Exhibits	54
Signature	54

AMERICAN FINANCIAL GROUP, INC. 10-Q

PART I

ITEM 1. — FINANCIAL STATEMENTS

AMERICAN FINANCIAL GROUP, INC. AND SUBSIDIARIES

CONSOLIDATED BALANCE SHEET (UNAUDITED)

(Dollars in Millions)

	March 31, 2024		December 31, 2023
Assets:
Cash and cash equivalents	$	1,087	$	1,225
Investments:
Fixed maturities, available for sale at fair value (amortized cost — $10,734 and $10,752; allowance for expected credit losses of $11 and $12)	10,371		10,377
Fixed maturities, trading at fair value	57		57
Equity securities, at fair value	1,040		1,018
Investments accounted for using the equity method	1,848		1,814
Mortgage loans	722		643
Real estate and other investments	129		129
Total cash and investments	15,254		15,263
Recoverables from reinsurers	4,510		4,477
Prepaid reinsurance premiums	1,078		961
Agents’ balances and premiums receivable	1,606		1,471
Deferred policy acquisition costs	309		309
Assets of managed investment entities	4,669		4,484
Other receivables	958		1,171
Other assets	1,312		1,346
Goodwill	305		305
Total assets	$	30,001	$	29,787
Liabilities and Equity:
Unpaid losses and loss adjustment expenses	$	13,050	$	13,087
Unearned premiums	3,650		3,451
Payable to reinsurers	1,078		1,186
Liabilities of managed investment entities	4,468		4,307
Long-term debt	1,475		1,475
Other liabilities	2,040		2,023
Total liabilities	25,761		25,529
Shareholders’ equity:
Common Stock, no par value        — 200,000,000 shares authorized        — 83,857,354 and 83,635,807 shares outstanding	84		84
Capital surplus	1,382		1,372
Retained earnings	3,089		3,121
Accumulated other comprehensive income (loss), net of tax	(315)		(319)
Total shareholders’ equity	4,240		4,258
Total liabilities and shareholders’ equity	$	30,001	$	29,787

2

AMERICAN FINANCIAL GROUP, INC. 10-Q

AMERICAN FINANCIAL GROUP, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENT OF EARNINGS (UNAUDITED)

(In Millions, Except Per Share Data)

	Three months ended March 31,
	2024		2023
Revenues:
Property and casualty insurance net earned premiums	$	1,546	$	1,437
Net investment income	198		217
Realized gains (losses) on securities	14		(46)
Income of managed investment entities:
Investment income	99		104
Gain (loss) on change in fair value of assets/liabilities	10		(4)
Other income	39		32
Total revenues	1,906		1,740
Costs and Expenses:
Property and casualty insurance:
Losses and loss adjustment expenses	912		820
Commissions and other underwriting expenses	503		473
Interest charges on borrowed money	19		19
Expenses of managed investment entities	92		95
Other expenses	76		69
Total costs and expenses	1,602		1,476
Earnings before income taxes	304		264
Provision for income taxes	62		52
Net Earnings	$	242	$	212
Earnings per Common Share:
Total basic earnings	$	2.89	$	2.49
Total diluted earnings	$	2.89	$	2.49
Average number of Common Shares:
Basic	83.7		85.2
Diluted	83.8		85.4

3

AMERICAN FINANCIAL GROUP, INC. 10-Q

AMERICAN FINANCIAL GROUP, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME (UNAUDITED)

(In Millions)

	Three months ended March 31,
	2024		2023
Net earnings	$	242	$	212
Other comprehensive income, net of tax:
Net unrealized gains (losses) on securities:
Unrealized holding gains (losses) on securities arising during the period	5		61
Reclassification adjustment for realized (gains) losses included in net earnings	4		23
Total net unrealized gains (losses) on securities	9		84
Net unrealized gains (losses) on cash flow hedges:
Unrealized holding gains (losses) on cash flow hedges arising during the period	(10)		4
Reclassification adjustment for investment income included in net earnings	5		4
Total net unrealized gains (losses) on cash flow hedges	(5)		8
Foreign currency translation adjustments	—		—
Other comprehensive income, net of tax	4		92
Comprehensive income	$	246	$	304

4

AMERICAN FINANCIAL GROUP, INC. 10-Q

AMERICAN FINANCIAL GROUP, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENT OF CHANGES IN EQUITY (UNAUDITED)

(Dollars in Millions)

		Shareholders’ Equity
	Common Shares	Common Stock and Capital Surplus		Retained Earnings		Accumulated Other Comp. Income (Loss)		Total
Balance at December 31, 2023	83,635,807	$	1,456	$	3,121	$	(319)	$	4,258
Net earnings	—	—		242		—		242
Other comprehensive income	—	—		—		4		4
Dividends ($3.21 per share)	—	—		(269)		—		(269)
Shares issued:
Exercise of stock options	92,851	4		—		—		4
Restricted stock awards	157,681	—		—		—		—
Other benefit plans	15,804	2		—		—		2
Dividend reinvestment plan	8,253	1		—		—		1
Stock-based compensation expense	—	4		—		—		4
Shares acquired and retired	—	—		—		—		—
Shares exchanged — benefit plans	(47,870)	(1)		(5)		—		(6)
Forfeitures of restricted stock	(5,172)	—		—		—		—
Balance at March 31, 2024	83,857,354	$	1,466	$	3,089	$	(315)	$	4,240
Balance at December 31, 2022	85,204,006	$	1,453	$	3,142	$	(543)	$	4,052
Net earnings	—	—		212		—		212
Other comprehensive income	—	—		—		92		92
Dividends ($4.63 per share)	—	—		(394)		—		(394)
Shares issued:
Exercise of stock options	64,339	3		—		—		3
Restricted stock awards	147,169	—		—		—		—
Other benefit plans	12,299	2		—		—		2
Dividend reinvestment plan	10,911	1		—		—		1
Stock-based compensation expense	—	5		—		—		5
Shares acquired and retired	(199,762)	(4)		(20)		—		(24)
Shares exchanged — benefit plans	(55,382)	(1)		(7)		—		(8)
Forfeitures of restricted stock	(11,922)	—		—		—		—
Balance at March 31, 2023	85,171,658	$	1,459	$	2,933	$	(451)	$	3,941

5

AMERICAN FINANCIAL GROUP, INC. 10-Q

AMERICAN FINANCIAL GROUP, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENT OF CASH FLOWS (UNAUDITED)

(In Millions)

	Three months ended March 31,
	2024		2023
Operating Activities:
Net earnings	$	242	$	212
Adjustments:
Depreciation and amortization	20		20
Realized (gains) losses on investing activities	(14)		45
Net purchases of trading securities	—		(3)
Change in:
Reinsurance and other receivables	(71)		162
Other assets	57		48
Insurance claims and reserves	162		(24)
Payable to reinsurers	(108)		(124)
Other liabilities	(42)		(28)
Managed investment entities’ assets/liabilities	(124)		139
Other operating activities, net	(15)		(44)
Net cash provided by operating activities	107		403
Investing Activities:
Purchases of:
Fixed maturities	(408)		(575)
Equity securities	(42)		(41)
Mortgage loans	(89)		—
Other investments	(27)		(49)
Real estate, property and equipment	(38)		(13)
Proceeds from:
Maturities and redemptions of fixed maturities	378		381
Repayments of mortgage loans	8		32
Sales of fixed maturities	75		342
Sales of equity securities	56		56
Sales of other investments	5		33
Sales of real estate, property and equipment	—		1
Managed investment entities:
Purchases of investments	(605)		(648)
Proceeds from sales and redemptions of investments	532		554
Net cash provided by (used in) investing activities	(155)		73
Financing Activities:
Reductions of long-term debt	—		(16)
Issuances of Common Stock	6		4
Repurchases of Common Stock	—		(24)
Cash dividends paid on Common Stock	(268)		(393)
Issuances of managed investment entities’ liabilities	635		588
Retirements of managed investment entities’ liabilities	(463)		(650)
Net cash used in financing activities	(90)		(491)
Net Change in Cash and Cash Equivalents	(138)		(15)
Cash and cash equivalents at beginning of period	1,225		872
Cash and cash equivalents at end of period	$	1,087	$	857

6

AMERICAN FINANCIAL GROUP, INC. 10-Q

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS 

INDEX TO NOTES
A.	Accounting Policies	H.	Goodwill and Other Intangibles
B.	Acquisition of Business	I.	Long-Term Debt
C.	Segments of Operations	J.	Shareholders’ Equity
D.	Fair Value Measurements	K.	Income Taxes
E.	Investments	L.	Contingencies
F.	Derivatives	M.	Insurance
G.	Managed Investment Entities

A.    Accounting Policies

Basis of Presentation   The accompanying consolidated financial statements for American Financial Group, Inc. and its subsidiaries (“AFG”) are unaudited; however, management believes that all adjustments (consisting only of normal recurring accruals unless otherwise disclosed herein) necessary for fair presentation have been made. The results of operations for interim periods are not necessarily indicative of results to be expected for the year. The financial statements have been prepared in accordance with the instructions to Form 10-Q and, therefore, do not include all information and footnotes necessary to be in conformity with U.S. generally accepted accounting principles (“GAAP”).

Certain reclassifications have been made to prior periods to conform to the current year’s presentation. All significant intercompany balances and transactions have been eliminated. The results of operations of companies since their formation or acquisition are included in the consolidated financial statements. Events or transactions occurring subsequent to March 31, 2024, and prior to the filing of this Form 10-Q, have been evaluated for potential recognition or disclosure herein.

The preparation of the financial statements requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Changes in circumstances could cause actual results to differ materially from those estimates.

Fair Value Measurements   Accounting standards define fair value as the price that would be received to sell an asset or paid to transfer a liability (an exit price) in an orderly transaction between market participants on the measurement date. The standards establish a hierarchy of valuation techniques based on whether the assumptions that market participants would use in pricing the asset or liability (“inputs”) are observable or unobservable. Observable inputs reflect market data obtained from independent sources, while unobservable inputs reflect AFG’s assumptions about the assumptions market participants would use in pricing the asset or liability. AFG did not have any material nonrecurring fair value measurements in the first three months of 2024.

Investments   Equity securities other than those accounted for under the equity method are reported at fair value with holding gains and losses generally recorded in realized gains (losses) on securities. However, AFG records holding gains and losses on limited partnerships and similar investments that do not qualify for equity method accounting (and are therefore carried at fair value), and certain other securities classified at purchase as “fair value through net investment income” in net investment income.

Fixed maturity securities classified as “available for sale” are reported at fair value with unrealized gains and losses included in accumulated other comprehensive income (“AOCI”) in AFG’s Balance Sheet. Fixed maturity securities classified as “trading” are reported at fair value with changes in unrealized holding gains or losses during the period included in net investment income. Mortgage loans (net of any allowance) are carried primarily at the aggregate unpaid balance.

Realized gains or losses on the disposal of fixed maturity securities are determined on the specific identification basis. Premiums and discounts on fixed maturity securities are amortized using the effective interest method. Mortgage-backed securities (“MBS”) are amortized over a period based on estimated future principal payments, including prepayments. Prepayment assumptions are reviewed periodically and adjusted to reflect actual prepayments and changes in expectations.

7

AMERICAN FINANCIAL GROUP, INC. 10-Q

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — CONTINUED

Limited partnerships and similar investments are generally accounted for using the equity method of accounting. Under the equity method, AFG records its share of the earnings or losses of the investee based on when it is reported by the investee in its financial statements rather than in the period in which the investee declares a dividend. AFG’s share of the earnings or losses from equity method investments is generally recorded on a quarter lag due to the timing of the receipt of the investee’s financial statements. AFG’s equity in the earnings (losses) of limited partnerships and similar investments is included in net investment income.

Credit Losses on Fixed Maturity Investments   When a decline in the value of an available for sale fixed maturity is considered to be other-than-temporary at the balance sheet date, an allowance for credit losses (impairment), including any write-off of accrued interest, is charged to earnings (included in realized gains (losses) on securities). If management can assert that it does not intend to sell the security and it is not more likely than not that it will have to sell it before recovery of its amortized cost basis (net of allowance), then the impairment is separated into two components: (i) the allowance related to credit losses (recorded in earnings) and (ii) the amount related to all other factors (recorded in other comprehensive income). The credit-related portion is measured by comparing a security’s amortized cost to the present value of its current expected cash flows discounted at its effective yield prior to the charge. The allowance is limited to the difference between a security’s amortized cost basis and its fair value. Subsequent increases or decreases in expected credit losses are recorded immediately in net earnings through realized gains (losses). If management intends to sell an impaired security, or it is more likely than not that it will be required to sell the security before recovery, an impairment is recorded in earnings to reduce the amortized cost (net of allowance) of that security to fair value.

Credit Losses on Financial Instruments Measured at Amortized Cost   Credit-related impairments for financial instruments measured at amortized cost (mortgage loans, premiums receivable and reinsurance recoverables) reflect estimated credit losses expected over the life of an exposure or pool of exposures. The estimate of expected credit losses considers historical information, current information, as well as reasonable and supportable forecasts, including estimates of prepayments. Expected credit losses, and subsequent increases or decreases in such expected losses, are recorded immediately through net earnings as an allowance that is deducted from the amortized cost basis of the financial asset, with the net carrying value of the financial asset presented on the balance sheet at the amount expected to be collected.

Derivatives   Derivatives included in AFG’s Balance Sheet are recorded at fair value. Changes in fair value of derivatives are included in earnings unless the derivatives are designated and qualify as highly effective cash flow hedges. AFG’s derivatives that do not qualify for hedge accounting under GAAP consist primarily of components of certain fixed maturity securities (convertible fixed maturities and interest-only and principal-only MBS) and a total return swap related to its deferred compensation obligations to employees.

To qualify for hedge accounting, at the inception of a derivative contract, AFG formally documents the relationship between the terms of the hedge and the hedged items and its risk management objective. This documentation includes defining how hedge effectiveness is evaluated at the inception date and over the life of the derivative.

Changes in the fair value of derivatives that are designated and qualify as highly effective cash flow hedges are recorded in AOCI and are reclassified into earnings when the variability of the cash flows from the hedged items impacts earnings. When the change in the fair value of a qualifying cash flow hedge is included in earnings, it is included in the same line item in the statement of earnings as the cash flows from the hedged item. AFG uses interest rate swaps that are designated and qualify as highly effective cash flow hedges to mitigate interest rate risk related to certain floating-rate securities.

Goodwill   Goodwill represents the excess of cost of subsidiaries over AFG’s equity in their underlying net assets at the date of acquisition. Goodwill is not amortized, but is subject to an impairment test at least annually. An entity is not required to complete the quantitative annual goodwill impairment test on a reporting unit if the entity elects to perform a qualitative analysis and determines that it is more likely than not that the reporting unit’s fair value exceeds its carrying amount.

Reinsurance   Amounts recoverable from reinsurers are estimated in a manner consistent with the claim liability associated with the reinsured policies. AFG reports as assets (i) the estimated reinsurance recoverable on paid and unpaid losses, including an estimate for losses incurred but not reported, and (ii) amounts paid or due to reinsurers applicable to the unexpired terms of policies in force. Payable to reinsurers includes ceded premiums due to reinsurers, as well as ceded premiums retained by AFG under contracts to fund ceded losses as they become due. AFG also assumes reinsurance from other companies. Earnings on reinsurance assumed is recognized based on information received from ceding companies.

8

AMERICAN FINANCIAL GROUP, INC. 10-Q

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — CONTINUED

Deferred Policy Acquisition Costs (“DPAC”)   Policy acquisition costs (principally commissions, premium taxes and certain underwriting and policy issuance costs) directly related to the successful acquisition or renewal of an insurance contract are deferred. DPAC is limited based upon recoverability without any consideration for anticipated investment income and is charged against income ratably over the terms of the related policies. A premium deficiency is recognized if the sum of expected claims costs, claims adjustment expenses and unamortized acquisition costs exceed the related unearned premiums. A premium deficiency is first recognized by charging any unamortized acquisition costs to expense to the extent required to eliminate the deficiency. If the premium deficiency is greater than unamortized acquisition costs, a liability is accrued for the excess deficiency and reported with unpaid losses and loss adjustment expenses.

Managed Investment Entities   A company is considered the primary beneficiary of, and therefore must consolidate, a variable interest entity (“VIE”) based primarily on its ability to direct the activities of the VIE that most significantly impact that entity’s economic performance and the obligation to absorb losses of, or receive benefits from, the entity that could potentially be significant to the VIE.

AFG manages, and has investments in, collateralized loan obligations (“CLOs”) that are VIEs (see Note G — “Managed Investment Entities”). AFG has determined that it is the primary beneficiary of these CLOs because (i) its role as asset manager gives it the power to direct the activities that most significantly impact the economic performance of the CLOs and (ii) through its investment in the CLO debt tranches, it has exposure to CLO losses (limited to the amount AFG invested) and the right to receive CLO benefits that could potentially be significant to the CLOs.

Because AFG has no right to use the CLO assets and no obligation to pay the CLO liabilities, the assets and liabilities of the CLOs are shown separately in AFG’s Balance Sheet. AFG has elected the fair value option for reporting on the CLO assets and liabilities to improve the transparency of financial reporting related to the CLOs. The net gain or loss from accounting for the CLO assets and liabilities at fair value is presented separately in AFG’s Statement of Earnings.

The fair values of a CLO’s assets may differ from the separately measured fair values of its liabilities even though the CLO liabilities only have recourse to the CLO assets. AFG has set the carrying value of the CLO liabilities equal to the fair value of the CLO assets (which have more observable fair values) as an alternative to reporting those liabilities at a separately measured fair value. CLO earnings attributable to AFG’s shareholders are measured by the change in the fair value of AFG’s investments in the CLOs and management fees earned.

At March 31, 2024, assets and liabilities of managed investment entities included $164 million in assets and $134 million in liabilities of a temporary warehousing entity that was established to provide AFG the ability to form a new CLO. At closing, all warehoused assets will be transferred to the new CLO and the liabilities will be repaid.

Unpaid Losses and Loss Adjustment Expenses   The liabilities stated for unpaid claims and for expenses of investigation and adjustment of unpaid claims represent management’s best estimate and are based upon (i) the accumulation of case estimates for losses reported prior to the close of the accounting period on direct business written; (ii) estimates received from ceding reinsurers and insurance pools and associations; (iii) estimates of unreported losses (including possible development on known claims) based on past experience; (iv) estimates based on experience of expenses for investigating and adjusting claims; and (v) the current state of the law and coverage litigation. Establishing reserves for asbestos, environmental and other mass tort claims involves considerably more judgment than other types of claims due to, among other things, inconsistent court decisions, an increase in bankruptcy filings as a result of asbestos-related liabilities, novel theories of coverage, and judicial interpretations that often expand theories of recovery and broaden the scope of coverage.

Loss reserve liabilities are subject to the impact of changes in claim amounts and frequency and other factors. Changes in estimates of the liabilities for losses and loss adjustment expenses are reflected in the statement of earnings in the period in which determined. Despite the variability inherent in such estimates, management believes that the liabilities for unpaid losses and loss adjustment expenses are adequate and reasonable.

Debt Issuance Costs   Debt issuance costs related to AFG’s outstanding debt are presented in its Balance Sheet as a direct reduction in the carrying value of long-term debt and are amortized over the life of the related debt using the effective interest method as a component of interest expense. Debt issuance costs related to AFG’s revolving credit facilities are included in other assets in AFG’s Balance Sheet.

9

AMERICAN FINANCIAL GROUP, INC. 10-Q

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — CONTINUED

Leases   Leases for terms of longer than one year are recognized as assets and liabilities for the rights and obligations created by those leases on the balance sheet based on the present value of contractual cash flows.

At March 31, 2024 AFG has a $204 million lease liability included in other liabilities and a lease right-of-use asset of $181 million included in other assets compared to $198 million and $176 million, respectively, at December 31, 2023.

Premium Recognition   Property and casualty premiums are earned generally over the terms of the policies on a pro rata basis. Unearned premiums represent that portion of premiums written, which is applicable to the unexpired terms of policies in force. On reinsurance assumed from other insurance companies or written through various underwriting organizations, unearned premiums are based on information received from such companies and organizations.

Income Taxes   Deferred income taxes are calculated using the liability method. Under this method, deferred income tax assets and liabilities are determined based on differences between financial reporting and tax bases and are measured using enacted tax rates. A valuation allowance is established to reduce total deferred tax assets to an amount that will more likely than not be realized. The effect of a change in tax rates on deferred tax assets and liabilities is recorded in net earnings in the period that includes the enactment date.

AFG recognizes the tax benefits of uncertain tax positions only when the position is more likely than not to be sustained under examination by the appropriate taxing authority. Interest and penalties on AFG’s reserve for uncertain tax positions are recognized as a component of tax expense.

Stock-Based Compensation   All share-based grants are recognized as compensation expense on a straight-line basis over their vesting periods based on their calculated fair value at the date of grant.

AFG records excess tax benefits or deficiencies for share-based payments through income tax expense in the statement of earnings. In addition, AFG accounts for forfeitures of awards when they occur.

Benefit Plans   AFG provides retirement benefits to qualified employees of participating companies through the AFG 401(k) Retirement and Savings Plan, a defined contribution plan. AFG makes all contributions to the retirement fund portion of the plan and matches a percentage of employee contributions to the savings fund. Company contributions are expensed in the year for which they are declared. AFG and many of its subsidiaries provide health care and life insurance benefits to eligible retirees. AFG also provides postemployment benefits to former or inactive employees (primarily those on disability) who were not deemed retired under other company plans. The projected future cost of providing these benefits is expensed over the period employees earn such benefits.

Earnings Per Share   Although basic earnings per share only considers shares of common stock outstanding during the period, the calculation of diluted earnings per share includes the following adjustments to weighted average common shares related to stock-based compensation plans: first three months of 2024 and 2023 — 0.1 million and 0.2 million.

There were no anti-dilutive potential common shares for the first three months of 2024 or 2023.

Statement of Cash Flows   For cash flow purposes, “investing activities” are defined as making and collecting loans and acquiring and disposing of debt or equity instruments, property and equipment and businesses. “Financing activities” include obtaining resources from owners and providing them with a return on their investments, borrowing money and repaying amounts borrowed. All other activities are considered “operating.” Short-term investments having original maturities of three months or less when purchased are considered to be cash equivalents for purposes of the financial statements.

B.    Acquisition of Business

Crop Risk Services   On July 3, 2023, AFG completed the acquisition of Crop Risk Services (“CRS”) from American International Group (“AIG”). CRS is a primary crop insurance general agent based in Decatur, Illinois, that generated crop year 2022 gross written premiums of approximately $1.2 billion and was the seventh largest provider of multi-peril crop insurance in the United States based on 2022 premiums. At closing, AFG paid AIG $234 million (based on $24 million in net tangible assets) using cash on hand.

10

AMERICAN FINANCIAL GROUP, INC. 10-Q

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — CONTINUED

Expenses related to the acquisition were $3 million and were expensed as incurred. The purchase price was allocated to the acquired assets and liabilities of CRS based on management’s best estimate of fair value as of the acquisition date. The purchase price allocation is shown below (in millions).

	July 3, 2023
Cash paid at purchase	$	234
Tangible assets acquired:
Cash and cash equivalents	$	26
Agents’ balances and premiums receivable	164
Other assets	3
Total tangible assets acquired	$	193
Liabilities acquired:
Other liabilities	$	169
Total liabilities acquired	169
Net tangible assets acquired, at fair value	24
Excess purchase price over net tangible assets acquired	$	210
Allocation of excess purchase price:
Intangible assets acquired (*)	$	124
Deferred tax asset (*)	1
Goodwill	85
	$	210

(*)Included in Other assets in AFG’s Balance Sheet.

In the purchase price allocation, $124 million of the purchase price was recognized as finite lived intangible assets primarily related to existing agency relationships, which will be amortized over an average estimated life of approximately 14 years. The acquisition resulted in the recognition of $85 million in GAAP basis goodwill based on the excess of the purchase price over the fair value of the net assets acquired. The acquisition resulted in $79 million of tax basis goodwill which is deductible for tax purposes.

C.    Segments of Operations

AFG manages its business as two segments: Property and casualty insurance and Other, which includes holding company costs and operations attributable to the noncontrolling interests of the managed investment entities.

AFG reports its property and casualty insurance business in the following Specialty sub-segments: (i) Property and transportation, which includes physical damage and liability coverage for buses and trucks and other specialty transportation niches, inland and ocean marine, agricultural-related products and other commercial property coverages, (ii) Specialty casualty, which includes primarily excess and surplus, executive and professional liability, general liability, umbrella and excess liability, specialty coverages in targeted markets, customized programs for small to mid-sized businesses and workers’ compensation insurance, and (iii) Specialty financial, which includes risk management insurance programs for lending and leasing institutions (including equipment leasing and collateral and lender-placed mortgage property insurance), fidelity and surety products and trade credit insurance. Premiums and underwriting profit included under Other specialty represent business assumed by AFG’s internal reinsurance program from the operations that make up AFG’s other Specialty sub-segments and amortization of a deferred gain on a retroactive reinsurance transaction related to the sale of a business. AFG’s reportable segments and their components were determined based primarily upon similar economic characteristics, products and services.

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AMERICAN FINANCIAL GROUP, INC. 10-Q

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — CONTINUED

The following tables (in millions) show AFG’s revenues and earnings before income taxes by segment and sub-segment.

	Three months ended March 31,
	2024		2023
Revenues
Property and casualty insurance:
Premiums earned:
Specialty
Property and transportation	$	513	$	475
Specialty casualty	730		704
Specialty financial	243		196
Other specialty	60		62
Total premiums earned	1,546		1,437
Net investment income	205		207
Other income	2		5
Total property and casualty insurance	1,753		1,649
Other	139		137
Total revenues before realized gains (losses)	1,892		1,786
Realized gains (losses) on securities	14		(46)
Total revenues	$	1,906	$	1,740
Earnings Before Income Taxes
Property and casualty insurance:
Underwriting:
Specialty
Property and transportation	$	56	$	43
Specialty casualty	74		88
Specialty financial	33		26
Other specialty	(9)		(2)
Other lines	(1)		(1)
Total underwriting	153		154
Investment and other income, net	187		196
Total property and casualty insurance	340		350
Other (*)	(50)		(40)
Total earnings before realized gains (losses) and income taxes	290		310
Realized gains (losses) on securities	14		(46)
Total earnings before income taxes	$	304	$	264

(*)Includes holding company interest and expenses, which includes a gain of $2 million on retirement of debt in the first three months of 2023.

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AMERICAN FINANCIAL GROUP, INC. 10-Q

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — CONTINUED

D.    Fair Value Measurements

Accounting standards for measuring fair value are based on inputs used in estimating fair value. The three levels of the hierarchy are as follows:

Level 1 — Quoted prices for identical assets or liabilities in active markets (markets in which transactions occur with sufficient frequency and volume to provide pricing information on an ongoing basis). AFG’s Level 1 financial instruments consist primarily of publicly traded equity securities, highly liquid government bonds for which quoted market prices in active markets are available and short-term investments of managed investment entities.

Level 2 — Quoted prices for similar instruments in active markets; quoted prices for identical or similar assets or liabilities in inactive markets (markets in which there are few transactions, the prices are not current, price quotations vary substantially over time or among market makers, or in which little information is released publicly); and valuations based on other significant inputs that are observable in active markets. AFG’s Level 2 financial instruments include corporate and municipal fixed maturity securities, asset-backed securities (“ABS”), mortgage-backed securities (“MBS”), certain non-affiliated common stocks and investments of managed investment entities priced using observable inputs. Level 2 inputs include benchmark yields, reported trades, corroborated broker/dealer quotes, issuer spreads and benchmark securities. When non-binding broker quotes can be corroborated by comparison to similar securities priced using observable inputs, they are classified as Level 2.

Level 3 — Valuations derived from market valuation techniques generally consistent with those used to estimate the fair values of Level 2 financial instruments in which one or more significant inputs are unobservable or when the market for a security exhibits significantly less liquidity relative to markets supporting Level 2 fair value measurements. The unobservable inputs may include management’s own assumptions about the assumptions market participants would use based on the best information available at the valuation date. Financial instruments whose fair value is estimated based on non-binding broker quotes or internally developed using significant inputs not based on, or corroborated by, observable market information are classified as Level 3.

As discussed in Note A — “Accounting Policies — Managed Investment Entities,” AFG has set the carrying value of its CLO liabilities equal to the fair value of the CLO assets (which have more observable fair values) as an alternative to reporting those liabilities at separately measured fair values. As a result, the CLO liabilities are categorized within the fair value hierarchy on the same basis (proportionally) as the related CLO assets. Since the portion of the CLO liabilities allocated to Level 3 is derived from the fair value of the CLO assets, these amounts are excluded from the progression of Level 3 financial instruments.

AFG’s management is responsible for the valuation process and uses data from outside sources (including nationally recognized pricing services and broker/dealers) in establishing fair value. AFG’s internal investment professionals are a group of approximately 20 investment professionals whose primary responsibility is to manage AFG’s investment portfolio. These professionals monitor individual investments as well as overall industries and are active in the financial markets on a daily basis. The group is led by AFG’s chief investment officer, who reports directly to one of AFG’s Co-CEOs. Valuation techniques utilized by pricing services and prices obtained from external sources are reviewed by AFG’s internal investment professionals who are familiar with the securities being priced and the markets in which they trade to ensure the fair value determination is representative of an exit price. To validate the appropriateness of the prices obtained, these investment managers consider widely published indices (as benchmarks), recent trades, changes in interest rates, general economic conditions and the credit quality of the specific issuers. In addition, AFG communicates directly with the pricing services regarding the methods and assumptions used in pricing, including verifying, on a test basis, the inputs used by the service to value specific securities.

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AMERICAN FINANCIAL GROUP, INC. 10-Q

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — CONTINUED

Assets and liabilities measured and carried at fair value in the financial statements are summarized below (in millions):

	Level 1		Level 2		Level 3		Total
March 31, 2024
Assets:
Available for sale (“AFS”) fixed maturities:
U.S. government and government agencies	$	198	$	1	$	—	$	199
States, municipalities and political subdivisions	—		908		2		910
Foreign government	—		235		—		235
Residential MBS	—		1,672		2		1,674
Commercial MBS	—		72		—		72
Collateralized loan obligations	—		1,592		1		1,593
Other asset-backed securities	—		2,039		335		2,374
Corporate and other	11		2,901		402		3,314
Total AFS fixed maturities	209		9,420		742		10,371
Trading fixed maturities	—		57		—		57
Equity securities	461		34		545		1,040
Assets of managed investment entities (“MIE”)	430		4,229		10		4,669
Other assets — derivatives	—		3		—		3
Total assets accounted for at fair value	$	1,100	$	13,743	$	1,297	$	16,140
Liabilities:
Contingent consideration — acquisitions	$	—	$	—	$	2	$	2
Liabilities of managed investment entities	411		4,047		10		4,468
Other liabilities — derivatives	—		28		—		28
Total liabilities accounted for at fair value	$	411	$	4,075	$	12	$	4,498
December 31, 2023
Assets:
Available for sale fixed maturities:
U.S. government and government agencies	$	235	$	1	$	—	$	236
States, municipalities and political subdivisions	—		982		2		984
Foreign government	—		230		—		230
Residential MBS	—		1,656		2		1,658
Commercial MBS	—		74		—		74
Collateralized loan obligations	—		1,686		1		1,687
Other asset-backed securities	—		2,011		351		2,362
Corporate and other	9		2,757		380		3,146
Total AFS fixed maturities	244		9,397		736		10,377
Trading fixed maturities	—		57		—		57
Equity securities	500		33		485		1,018
Assets of managed investment entities	335		4,140		9		4,484
Other assets — derivatives	—		6		—		6
Total assets accounted for at fair value	$	1,079	$	13,633	$	1,230	$	15,942
Liabilities:
Contingent consideration — acquisitions	$	—	$	—	$	2	$	2
Liabilities of managed investment entities	322		3,976		9		4,307
Other liabilities — derivatives	—		22		—		22
Total liabilities accounted for at fair value	$	322	$	3,998	$	11	$	4,331

Approximately 8% of the total assets carried at fair value at March 31, 2024, were Level 3 assets. Approximately 8% ($109 million) of those Level 3 assets were priced using non-binding broker quotes, for which there is a lack of transparency as to the inputs used to determine fair value. Details as to the quantitative inputs are neither provided by the brokers nor otherwise reasonably obtainable by AFG. Approximately 1% ($10 million) of the Level 3 assets were priced by pricing services where either a single price was not corroborated, prices varied enough among the providers, or other market factors led management to determine these securities be classified as Level 3 assets. Approximately 31%

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AMERICAN FINANCIAL GROUP, INC. 10-Q

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — CONTINUED

($397 million) of the Level 3 assets were equity investments in limited partnerships and similar investments that do not qualify for equity method accounting whose prices were determined based on financial information provided by the limited partnerships.

Internally developed prices for fixed maturities are estimated using a variety of inputs, including appropriate credit spreads over the treasury yield (of a similar duration), trade information and prices of comparable securities and other security specific features (such as optional early redemption). Internally developed Level 3 asset fair values represent approximately 60% ($781 million) of the total fair value of Level 3 assets at March 31, 2024. Approximately 73% ($566 million) of these internally developed Level 3 assets are priced using a pricing model that uses a discounted cash flow approach to estimate the fair value of fixed maturity securities. The credit spread applied by management is the significant unobservable input of the pricing model. In instances where the security is currently callable at par value and the pricing model suggests a higher price, management caps the fair value at par value. Approximately 18% ($144 million) of the internally developed Level 3 assets are equity securities which are priced primarily using internal models with some inputs that are not market observable. Management believes that any justifiable changes in unobservable inputs used to determine internally developed fair values would not have resulted in a material change in AFG’s financial position.

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AMERICAN FINANCIAL GROUP, INC. 10-Q

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — CONTINUED

Changes in balances of Level 3 financial assets and liabilities carried at fair value during the first three months of 2024 and 2023 are presented below (in millions). The transfers into and out of Level 3 were due to changes in the availability of market observable inputs. All transfers are reflected in the table at fair value as of the end of the reporting period.

			Total realized/unrealized gains (losses) included in
	Balance at December 31, 2023		Net earnings (loss)		Other comprehensive income (loss)		Purchases and issuances		Sales and settlements		Transfer into Level 3		Transfer out of Level 3		Balance at March 31, 2024
AFS fixed maturities:
U.S. government agency	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
State and municipal	2		—		—		—		—		—		—		2
Residential MBS	2		—		—		—		—		—		—		2
Commercial MBS	—		—		—		—		—		—		—		—
Collateralized loan obligations	1		—		—		—		—		—		—		1
Other asset-backed securities	351		—		—		15		(5)		—		(26)		335
Corporate and other	380		(1)		—		33		(6)		—		(4)		402
Total AFS fixed maturities	736		(1)		—		48		(11)		—		(30)		742
Equity securities	485		20		—		42		(2)		—		—		545
Assets of MIE	9		(1)		—		2		—		—		—		10
Total Level 3 assets	$	1,230	$	18	$	—	$	92	$	(13)	$	—	$	(30)	$	1,297
Contingent consideration — acquisitions	$	(2)	$	—	$	—	$	—	$	—	$	—	$	—	$	(2)
Total Level 3 liabilities	$	(2)	$	—	$	—	$	—	$	—	$	—	$	—	$	(2)

			Total realized/unrealized gains (losses) included in
	Balance at December 31, 2022		Net earnings (loss)		Other comprehensive income (loss)		Purchases and issuances		Sales and settlements		Transfer into Level 3		Transfer out of Level 3		Balance at March 31, 2023
AFS fixed maturities:
U.S. government agency	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
State and municipal	5		—		—		—		—		—		—		5
Residential MBS	9		—		—		—		(3)		4		(5)		5
Commercial MBS	—		—		—		—		—		—		—		—
Collateralized loan obligations	2		—		—		—		—		—		(1)		1
Other asset-backed securities	329		—		4		7		(5)		—		—		335
Corporate and other	319		5		2		44		(11)		—		—		359
Total AFS fixed maturities	664		5		6		51		(19)		4		(6)		705
Equity securities	427		(3)		—		31		(22)		—		(22)		411
Assets of MIE	11		(1)		—		2		—		—		—		12
Total Level 3 assets	$	1,102	$	1	$	6	$	84	$	(41)	$	4	$	(28)	$	1,128
Contingent consideration — acquisitions	$	(25)	$	—	$	—	$	—	$	—	$	—	$	—	$	(25)
Total Level 3 liabilities	$	(25)	$	—	$	—	$	—	$	—	$	—	$	—	$	(25)

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AMERICAN FINANCIAL GROUP, INC. 10-Q

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — CONTINUED

Fair Value of Financial Instruments   The carrying value and fair value of financial instruments that are not carried at fair value in the financial statements are summarized below (in millions):

	Carrying Value		Fair Value
			Total		Level 1		Level 2		Level 3
March 31, 2024
Financial assets:
Cash and cash equivalents	$	1,087	$	1,087	$	1,087	$	—	$	—
Mortgage loans	722		671		—		—		671
Total financial assets not accounted for at fair value	$	1,809	$	1,758	$	1,087	$	—	$	671
Long-term debt	$	1,475	$	1,358	$	—	$	1,355	$	3
Total financial liabilities not accounted for at fair value	$	1,475	$	1,358	$	—	$	1,355	$	3
December 31, 2023
Financial assets:
Cash and cash equivalents	$	1,225	$	1,225	$	1,225	$	—	$	—
Mortgage loans	643		596		—		—		596
Total financial assets not accounted for at fair value	$	1,868	$	1,821	$	1,225	$	—	$	596
Long-term debt	$	1,475	$	1,345	$	—	$	1,342	$	3
Total financial liabilities not accounted for at fair value	$	1,475	$	1,345	$	—	$	1,342	$	3

E.    Investments

Available for sale fixed maturities at March 31, 2024 and December 31, 2023, consisted of the following (in millions):

	Amortized Cost		Allowance for Expected Credit Losses		Gross Unrealized				Net Unrealized		Fair Value
					Gains		Losses
March 31, 2024
Fixed maturities:
U.S. government and government agencies	$	206	$	—	$	—	$	(7)	$	(7)	$	199
States, municipalities and political subdivisions	949		—		6		(45)		(39)		910
Foreign government	240		—		—		(5)		(5)		235
Residential MBS	1,807		2		25		(156)		(131)		1,674
Commercial MBS	72		—		—		—		—		72
Collateralized loan obligations	1,605		3		13		(22)		(9)		1,593
Other asset-backed securities	2,469		6		13		(102)		(89)		2,374
Corporate and other	3,386		—		39		(111)		(72)		3,314
Total fixed maturities	$	10,734	$	11	$	96	$	(448)	$	(352)	$	10,371
December 31, 2023
Fixed maturities:
U.S. government and government agencies	$	243	$	—	$	1	$	(8)	$	(7)	$	236
States, municipalities and political subdivisions	1,014		—		8		(38)		(30)		984
Foreign government	236		—		1		(7)		(6)		230
Residential MBS	1,788		1		26		(155)		(129)		1,658
Commercial MBS	75		—		—		(1)		(1)		74
Collateralized loan obligations	1,709		3		9		(28)		(19)		1,687
Other asset-backed securities	2,477		5		10		(120)		(110)		2,362
Corporate and other	3,210		3		52		(113)		(61)		3,146
Total fixed maturities	$	10,752	$	12	$	107	$	(470)	$	(363)	$	10,377

17

AMERICAN FINANCIAL GROUP, INC. 10-Q

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — CONTINUED

Equity securities which are reported at fair value with holding gains and losses recognized in net earnings, consisted of the following at March 31, 2024 and December 31, 2023 (in millions):

	March 31, 2024						December 31, 2023
	Actual Cost		Fair Value		Fair Value Over Cost		Actual Cost		Fair Value		Fair Value Over Cost
Common stocks	$	531	$	629	$	98	$	512	$	586	$	74
Perpetual preferred stocks	385		411		26		422		432		10
Total equity securities carried at fair value	$	916	$	1,040	$	124	$	934	$	1,018	$	84

The following table shows the carrying value and net investment income from investments accounted for using the equity method (in millions):

					Net Investment Income
	Carrying Value				Three months ended March 31,
	March 31, 2024		December 31, 2023		2024		2023
Real estate-related investments (*)	$	1,309	$	1,320	$	(6)	$	47
Private equity	500		457		30		8
Private debt	39		37		1		2
Total investments accounted for using the equity method	$	1,848	$	1,814	$	25	$	57

(*)91% and 92% of the carrying value relates to underlying investments in multi-family properties as of March 31, 2024 and December 31, 2023, respectively.

The earnings (losses) from these investments are generally reported on a quarter lag due to the timing required to obtain the necessary information from the funds. AFG regularly reviews and discusses fund performance with the fund managers to corroborate the reasonableness of the underlying reported asset values and to assess whether any events have occurred within the lag period that may materially affect the valuation of these investments.

With respect to partnerships and similar investments, AFG had unfunded commitments of $443 million and $418 million as of March 31, 2024 and December 31, 2023, respectively.

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AMERICAN FINANCIAL GROUP, INC. 10-Q

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — CONTINUED

The following table shows gross unrealized losses (dollars in millions) on available for sale fixed maturities by investment category and length of time that individual securities have been in a continuous unrealized loss position at the following balance sheet dates.

	Less Than Twelve Months						Twelve Months or More
	Unrealized Loss		Fair Value		Fair Value as % of Cost		Unrealized Loss		Fair Value		Fair Value as % of Cost
March 31, 2024
Fixed maturities:
U.S. government and government agencies	$	—	$	27	100	%	$	(7)	$	150	96	%
States, municipalities and political subdivisions	(2)		184		99	%	(43)		529		92	%
Foreign government	—		17		100	%	(5)		206		98	%
Residential MBS	(1)		127		99	%	(155)		1,017		87	%
Commercial MBS	—		—		—	%	—		42		100	%
Collateralized loan obligations	—		70		100	%	(22)		456		95	%
Other asset-backed securities	(1)		103		99	%	(101)		1,591		94	%
Corporate and other	(5)		408		99	%	(106)		1,416		93	%
Total fixed maturities	$	(9)	$	936	99	%	$	(439)	$	5,407	92	%
December 31, 2023
Fixed maturities:
U.S. government and government agencies	$	—	$	11	100	%	$	(8)	$	191	96	%
States, municipalities and political subdivisions	(1)		76		99	%	(37)		526		93	%
Foreign government	—		—		—	%	(7)		207		97	%
Residential MBS	(1)		42		98	%	(154)		1,089		88	%
Commercial MBS	—		—		—	%	(1)		61		98	%
Collateralized loan obligations	—		25		100	%	(28)		807		97	%
Other asset-backed securities	(1)		151		99	%	(119)		1,663		93	%
Corporate and other	(4)		123		97	%	(109)		1,455		93	%
Total fixed maturities	$	(7)	$	428	98	%	$	(463)	$	5,999	93	%

At March 31, 2024, the gross unrealized losses on fixed maturities of $448 million relate to approximately 1,450 securities. Investment grade securities (as determined by nationally recognized rating agencies) represented approximately 95% of the gross unrealized loss and 95% of the fair value of securities with unrealized losses.

To evaluate fixed maturities for expected credit losses (impairment), management considers whether the unrealized loss is credit-driven or a result of changes in market interest rates, the extent to which fair value is less than cost basis, historical operating, balance sheet and cash flow data from the issuer, third party research and communications with industry specialists and discussions with issuer management.

AFG analyzes its MBS for expected credit losses (impairment) each quarter based upon expected future cash flows. Management estimates expected future cash flows based upon its knowledge of the MBS market, cash flow projections (which reflect loan to collateral values, subordination, vintage and geographic concentration) received from independent sources, implied cash flows inherent in security ratings and analysis of historical payment data.

Management believes AFG will recover its cost basis (net of any allowance) in the securities with unrealized losses and that AFG has the ability to hold the securities until they recover in value and had no intent to sell them at March 31, 2024.

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AMERICAN FINANCIAL GROUP, INC. 10-Q

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — CONTINUED

A progression of the allowance for expected credit losses on available for sale fixed maturity securities is shown below (in millions):

	Structured Securities (*)		Corporate and Other		Total
Balance at December 31, 2023	$	9	$	3	$	12
Provision for expected credit losses on securities with no previous allowance	1		—		1
Additions to previously recognized expected credit losses	1		—		1
Reductions due to sales or redemptions	—		(3)		(3)
Balance at March 31, 2024	$	11	$	—	$	11
Balance at December 31, 2022	$	10	$	1	$	11
Provision for expected credit losses on securities with no previous allowance	1		5		6
Reductions to previously recognized expected credit losses	—		(1)		(1)
Reductions due to sales or redemptions	—		—		—
Balance at March 31, 2023	$	11	$	5	$	16

(*)Includes mortgage-backed securities, collateralized loan obligations and other asset-backed securities.

In the first three months of 2024 and 2023, AFG did not purchase any securities with expected credit losses.

The table below sets forth the scheduled maturities of AFG’s available for sale fixed maturities as of March 31, 2024 (dollars in millions). Securities with sinking funds are reported at average maturity. Actual maturities may differ from contractual maturities because certain securities may be called or prepaid by the issuers.

	Amortized		Fair Value
	Cost, net (*)		Amount		%
Maturity
One year or less	$	462	$	457	4	%
After one year through five years	2,409		2,344		23	%
After five years through ten years	1,279		1,264		12	%
After ten years	631		593		6	%
	4,781		4,658		45	%
Collateralized loan obligations and other ABS (average life of approximately 3 years)	4,065		3,967		38	%
MBS (average life of approximately 6.5 years)	1,877		1,746		17	%
Total	$	10,723	$	10,371	100	%

(*)Amortized cost, net of allowance for expected credit losses.

Certain risks are inherent in fixed maturity securities, including loss upon default, price volatility in reaction to changes in interest rates, and general market factors and risks associated with reinvestment of proceeds due to prepayments or redemptions in a period of declining interest rates.

There were no investments in individual issuers that exceeded 10% of shareholders’ equity at March 31, 2024 or December 31, 2023.

20

AMERICAN FINANCIAL GROUP, INC. 10-Q

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — CONTINUED

Net Investment Income   The following table shows (in millions) investment income earned and investment expenses incurred.

	Three months ended March 31,
	2024		2023
Investment income:
Fixed maturities:
Interest and amortization	$	134	$	119
Change in fair value (a)	—		3
Equity securities:
Dividends	7		9
Change in fair value (b)	16		16
Equity in earnings of partnerships and similar investments	25		57
Other	22		18
Gross investment income	204		222
Investment expenses	(6)		(5)
Net investment income	$	198	$	217

(a)The change in the fair value of fixed maturities classified as trading and derivatives embedded in convertible fixed maturities related to limited partnerships and similar investments.

(b)Although the change in the fair value of the majority of AFG’s equity securities is recorded in realized gains (losses) on securities, AFG records holding gains and losses on limited partnerships and similar investments that do not qualify for equity method accounting and related equity investments in net investment income.

Realized gains (losses) and changes in unrealized appreciation (depreciation) included in AOCI related to fixed maturity securities are summarized as follows (in millions):

	Three months ended March 31, 2024								Three months ended March 31, 2023
	Realized gains (losses)								Realized gains (losses)
	Before Impairments		Impairment Allowance		Total		Change in Unrealized		Before Impairments		Impairment Allowance		Total		Change in Unrealized
Fixed maturities	$	(4)	$	(2)	$	(6)	$	11	$	(23)	$	(5)	$	(28)	$	107
Equity securities	20		—		20		—		(18)		—		(18)		—
Mortgage loans and other investments	—		—		—		—		—		—		—		—
Total pretax	16		(2)		14		11		(41)		(5)		(46)		107
Tax effects	(3)		—		(3)		(2)		8		1		9		(23)
Net of tax	$	13	$	(2)	$	11	$	9	$	(33)	$	(4)	$	(37)	$	84

All equity securities other than those accounted for under the equity method are carried at fair value through net earnings. AFG recorded net holding gains (losses) on equity securities during the first quarter and first three months of 2024 and 2023 on securities that were still owned at March 31, 2024 and March 31, 2023 as follows (in millions):

	Three months ended March 31,
	2024		2023
Included in realized gains (losses)	$	19	$	(23)
Included in net investment income	16		16
	$	35	$	(7)

Gross realized gains and losses (excluding changes in impairment allowance and mark-to-market of derivatives) on available for sale fixed maturity investment transactions consisted of the following (in millions):

	Three months ended March 31,
	2024		2023
Gross gains	$	—	$	1
Gross losses	(3)		(25)

21

AMERICAN FINANCIAL GROUP, INC. 10-Q

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — CONTINUED

F.    Derivatives

As discussed under “Derivatives” in Note A — “Accounting Policies,” AFG uses derivatives to mitigate certain market risks related to its investment portfolio and deferred compensation obligations to employees.

The following table presents the classification of derivative assets and liabilities included in AFG’s Balance Sheet at fair value (in millions):

		March 31, 2024				December 31, 2023
	Balance Sheet Line	Asset		Liability		Asset		Liability
Derivatives designated and qualifying as cash flow hedges:
Interest rate swaps	Other assets/Other liabilities	$	—	$	28	$	1	$	22
Derivatives not designated as hedging instruments:
Fixed maturities with embedded derivatives	Fixed maturities	77		—		81		—
Total return swap	Other assets/Other liabilities	3		—		5		—
		$	80	$	28	$	87	$	22

AFG’s interest rate swaps are designated and qualify as highly effective cash flow hedges to mitigate interest rate risk related to certain floating-rate securities included in AFG’s portfolio of fixed maturity securities. The purpose of each of these swaps is to effectively convert a portion of AFG’s floating-rate fixed maturity securities to fixed rates by offsetting the variability in cash flows attributable to changes in the applicable Secured Overnight Financing Rate (“SOFR”).

Under the terms of the swaps, AFG receives fixed-rate interest payments in exchange for variable interest payments based on SOFR. The notional amounts of the interest rate swaps generally decline over each swap’s respective life (the swaps expire between July 2024 and July 2028) in anticipation of the expected decline in AFG’s portfolio of fixed maturity securities with floating interest rates based on SOFR. The total outstanding notional amount of AFG’s interest rate swaps was $1.26 billion at March 31, 2024 compared to $1.30 billion at December 31, 2023, reflecting scheduled amortization. In the first three months of 2024 and 2023, losses of $7 million and $5 million, respectively, were reclassified from AOCI to net earnings. Based on forward interest rate curves at March 31, 2024, management estimates that it will reclassify approximately $21 million of pre-tax net losses on interest rate swaps in AOCI to net investment income over the next twelve months. The actual amount will vary based on changes in SOFR. A collateral receivable supporting these swaps of $48 million at both March 31, 2024 and December 31, 2023 is included in other assets in AFG’s Balance Sheet.

The fixed maturities with embedded derivatives consist of convertible fixed maturity securities and interest-only and principal-only MBS. AFG records the change in the fair value of these securities in net earnings. These investments are part of AFG’s overall investment strategy and represent a small component of AFG’s overall investment portfolio.

AFG is exposed to fair value changes from certain equity and fixed maturity market-based exposures related to its deferred compensation obligations to certain employees. To mitigate this risk, AFG entered into a total return swap in 2022. A liability to return collateral related to the swap of $5 million at both March 31, 2024 and December 31, 2023 is included in other liabilities in AFG’s Balance Sheet.

22

AMERICAN FINANCIAL GROUP, INC. 10-Q

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — CONTINUED

The following table summarizes the gains (losses) included in AFG’s Statement of Earnings for changes in the fair value of derivatives for the three months ended March 31, 2024 and 2023 (in millions):

		Three months ended March 31,
	Statement of Earnings Line	2024		2023
Qualifying cash flow hedges - gains (losses) reclassified from AOCI to net earnings:
Interest rate swaps	Net investment income	$	(7)	$	(5)
Non-designated hedges - gains (losses) included in net earnings:
Fixed maturities with embedded derivatives	Realized gains (losses) on securities	(1)		1
Fixed maturities with embedded derivatives	Net investment income	—		3
Total return swap	Other expenses	6		6
Earnings (losses) on non-designated hedges		5		10
Total earnings (losses) on derivatives		$	(2)	$	5

G.    Managed Investment Entities

AFG is the investment manager and it has investments ranging from 13.3% to 100% of the most subordinate debt tranche of thirteen active collateralized loan obligation entities (“CLOs”), which are considered variable interest entities. AFG also owns portions of the senior debt tranches of certain of these CLOs. Upon formation between 2012 and 2024, these entities issued securities in various senior and subordinate classes and invested the proceeds primarily in secured bank loans, which serve as collateral for the debt securities issued by each CLO. None of the collateral was purchased from AFG. AFG’s investments in the subordinate debt tranches of these entities receive residual income from the CLOs only after the CLOs pay expenses (including management fees to AFG) and interest on and returns of capital to senior levels of debt securities. There are no contractual requirements for AFG to provide additional funding for these entities. AFG has not provided and does not intend to provide any financial support to these entities.

AFG’s maximum exposure to economic loss on the CLOs that it manages is limited to its investment in those CLOs, which had an aggregate fair value of $201 million (including $139 million invested in the most subordinate tranches and $30 million invested in a temporary warehousing entity) at March 31, 2024.

In February 2024, AFG formed one new CLO, which issued $406 million face amount of liabilities (including $32 million face amount purchased by AFG). In March 2023, AFG formed one new CLO, which issued $407 million face amount of liabilities (including $16 million face amount purchased by AFG).

23

AMERICAN FINANCIAL GROUP, INC. 10-Q

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — CONTINUED

The following table shows a progression of the fair value of AFG's investment in CLO tranches (in millions):

	Three months ended March 31,
	2024		2023
Balance at beginning of period	$	137	$	112
Purchases	28		11
Sales	—		—
Distributions	(9)		(5)
Change in fair value	13		1
Balance at end of period (*)	$	169	$	119

(*)Excludes $30 million and $13 million invested in a temporary warehousing entity at March 31, 2024 and March 31, 2023, respectively, that was established to provide AFG the ability to form a new CLO.

The revenues and expenses of the CLOs are separately identified in AFG’s Statement of Earnings, after the elimination of management fees and earnings attributable to AFG as measured by the change in the fair value of AFG’s investments in the CLOs. Selected financial information related to the CLOs is shown below (in millions):

	Three months ended March 31,
	2024		2023
Gains (losses) on change in fair value of assets/liabilities (*):
Assets	$	12	$	34
Liabilities	(2)		(38)
Management fees paid to AFG	3		4
CLO earnings attributable to AFG	14		1

(*)Included in revenues in AFG’s Statement of Earnings.

The aggregate unpaid principal balance of the CLOs’ fixed maturity investments exceeded the fair value of the investments by $95 million and $109 million at March 31, 2024 and December 31, 2023, respectively. The aggregate unpaid principal balance of the CLOs’ debt exceeded its carrying value by $253 million at both of those dates. The CLO assets include loans with an aggregate fair value of $1 million at March 31, 2024 and $7 million at December 31, 2023, for which the CLOs are not accruing interest because the loans are in default (aggregate unpaid principal balance of $5 million at March 31, 2024 and $13 million at December 31, 2023).

In addition to the CLOs that it manages, AFG had investments in CLOs that are managed by third parties (therefore not consolidated), which are included in available for sale fixed maturity securities and had a fair value of $1.59 billion at March 31, 2024 and $1.69 billion at December 31, 2023.

H.    Goodwill and Other Intangibles

There were no changes in the goodwill balance of $305 million during the first three months of 2024.

Included in other assets in AFG’s Balance Sheet is $208 million at March 31, 2024 and $213 million at December 31, 2023 in amortizable intangible assets related to acquisitions. These amounts are net of accumulated amortization of $44 million and $39 million, respectively. Amortization of intangibles was $5 million and $3 million in the first three months of 2024 and 2023, respectively.

24

AMERICAN FINANCIAL GROUP, INC. 10-Q

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — CONTINUED

I.    Long-Term Debt

Long-term debt consisted of the following (in millions):

	March 31, 2024						December 31, 2023
	Principal		Discount and Issue Costs		Carrying Value		Principal		Discount and Issue Costs		Carrying Value
Direct Senior Obligations of AFG:
4.50% Senior Notes due June 2047	$	567	$	(1)	$	566	$	567	$	(1)	$	566
5.25% Senior Notes due April 2030	253		(4)		249		253		(4)		249
Other	3		—		3		3		—		3
	823		(5)		818		823		(5)		818
Direct Subordinated Obligations of AFG:
4.50% Subordinated Debentures due September 2060	200		(5)		195		200		(5)		195
5.125% Subordinated Debentures due December 2059	200		(5)		195		200		(5)		195
5.625% Subordinated Debentures due June 2060	150		(4)		146		150		(4)		146
5.875% Subordinated Debentures due March 2059	125		(4)		121		125		(4)		121
	675		(18)		657		675		(18)		657
	$	1,498	$	(23)	$	1,475	$	1,498	$	(23)	$	1,475

Scheduled principal payments on debt for the balance of 2024, the subsequent five years and thereafter are as follows: 2024 — none; 2025 — none; 2026 — none; 2027 — none; 2028 — none; 2029 — none and thereafter — $1.50 billion.

In the first three months of 2023, AFG repurchased $15 million principal amount of its 4.50% Senior Notes due in June 2047 for $13 million and $3 million principal amount of its 5.25% Senior Notes due in April 2030 for $3 million in open market transactions.

AFG can borrow up to $450 million under its revolving credit facility, which expires in June 2028. Amounts borrowed under this agreement bear interest, based on AFG’s credit rating, at rates ranging from 1.00% to 1.75% (currently 1.25%) over a SOFR-based floating rate. No amounts were borrowed under this facility at March 31, 2024 or December 31, 2023.

J.    Shareholders’ Equity

AFG is authorized to issue 12.5 million shares of Voting Preferred Stock and 12.5 million shares of Nonvoting Preferred Stock, each without par value.

Accumulated Other Comprehensive Income (Loss), Net of Tax (“AOCI”)   Comprehensive income is defined as all changes in shareholders’ equity except those arising from transactions with shareholders. Comprehensive income includes net earnings and other comprehensive income (loss), which consists primarily of changes in net unrealized gains or losses on available for sale fixed maturity securities.

25

AMERICAN FINANCIAL GROUP, INC. 10-Q

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — CONTINUED

The progression of the components of accumulated other comprehensive income (loss) follows (in millions):

			Other Comprehensive Income (Loss)
	AOCI Beginning Balance		Pretax		Tax		Net of tax		AOCI Ending Balance
Three months ended March 31, 2024
Net unrealized gains (losses) on securities:
Unrealized holding gains (losses) on securities arising during the period			$	6	$	(1)	$	5
Reclassification adjustment for realized (gains) losses included in net earnings (*)			5		(1)		4
Total net unrealized gains (losses) on securities	$	(287)	11		(2)		9		$	(278)
Net unrealized gains (losses) on cash flow hedges:
Unrealized holding gains (losses) on cash flow hedges arising during the period			(13)		3		(10)
Reclassification adjustment for investment income included in net earnings (*)			7		(2)		5
Total net unrealized gains (losses) on cash flow hedges	(17)		(6)		1		(5)		(22)
Foreign currency translation adjustments	(17)		—		—		—		(17)
Pension and other postretirement plan adjustments	2		—		—		—		2
Total	$	(319)	$	5	$	(1)	$	4	$	(315)
Three months ended March 31, 2023
Net unrealized gains (losses) on securities:
Unrealized holding gains (losses) on securities arising during the period			$	78	$	(17)	$	61
Reclassification adjustment for realized (gains) losses included in net earnings (*)			29		(6)		23
Total net unrealized gains (losses) on securities	$	(497)	107		(23)		84		$	(413)
Net unrealized gains (losses) on cash flow hedges:
Unrealized holding gains (losses) on cash flow hedges arising during the period			5		(1)		4
Reclassification adjustment for investment income included in net earnings (*)			5		(1)		4
Total net unrealized gains (losses) on cash flow hedges	(29)		10		(2)		8		(21)
Foreign currency translation adjustments	(20)		—		—		—		(20)
Pension and other postretirement plan adjustments	3		—		—		—		3
Total	$	(543)	$	117	$	(25)	$	92	$	(451)

(*)The reclassification adjustments affected the following lines in AFG’s Statement of Earnings:

OCI component	Affected line in the statement of earnings
Pretax - Net unrealized gains (losses) on securities	Realized gains (losses) on securities
Pretax - Net unrealized gains (losses) on cash flow hedges	Net investment income
Tax	Provision for income taxes

Stock Incentive Plans   Under AFG’s stock incentive plans, employees of AFG and its subsidiaries are eligible to receive equity awards in the form of stock options, stock appreciation rights, restricted stock awards, restricted stock units and stock awards. In the first three months of 2024, AFG issued 157,681 shares of restricted Common Stock (fair value of $126.24 per share) under the Stock Incentive Plan.

Total compensation expense related to stock incentive plans of AFG and its subsidiaries was $4 million and $5 million in the first three months of 2024 and 2023, respectively.

26

AMERICAN FINANCIAL GROUP, INC. 10-Q

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — CONTINUED

K.    Income Taxes

The following is a reconciliation of income taxes at the statutory rate of 21% to the provision for income taxes as shown in AFG’s Statement of Earnings (dollars in millions):

	Three months ended March 31,
	2024				2023
	Amount		% of EBT		Amount		% of EBT
Earnings before income taxes (“EBT”)	$	304			$	264
Income taxes at statutory rate	$	64	21	%	$	55	21	%
Effect of:
Employee stock ownership plan dividend paid deduction	(2)		(1	%)	(3)		(1	%)
Stock-based compensation	(2)		(1	%)	(2)		(1	%)
Tax exempt interest	(1)		—	%	(1)		—	%
Dividends received deduction	—		—	%	(1)		—	%
Nondeductible expenses	2		1	%	3		1	%
Foreign operations	—		—	%	2		1	%
Other	1		—	%	(1)		(1	%)
Provision for income taxes as shown in the statement of earnings	$	62	20	%	$	52	20	%

On January 1, 2023, the two major tax provisions in the Inflation Reduction Act (“IRA”) became effective. The IRA created a new corporate alternative minimum tax (“CAMT”) based on the earnings that a company reports in its financial statements and imposes a 1% excise tax on corporate stock repurchases. Any CAMT incurred would be available to offset taxes payable under the standard calculation in future periods. Accordingly, the CAMT is a timing difference and would result in the recording of an offsetting deferred tax asset with no impact on overall income tax expense. Based on current guidance, while AFG meets the financial statement income thresholds to be subject to CAMT, management does not believe AFG will incur a CAMT liability for 2024. The excise tax on stock repurchases in excess of any issuances is recorded as part of the cost of the repurchases directly in shareholders’ equity.

The Organisation for Economic Co-operation and Development, an intergovernmental organization with 38 member countries, has proposed a global minimum corporate tax rate of 15% (“Pillar Two”). Due to AFG’s limited international operations and the tax rate AFG is subject to in those jurisdictions, management does not believe Pillar Two will have a material impact on AFG’s results of operations.

L.    Contingencies

There have been no significant changes to the matters discussed and referred to in Note N — “Contingencies” of AFG’s 2023 Form 10-K, which covers property and casualty insurance reserves for claims related to environmental exposures, asbestos and other mass tort claims and environmental and occupational injury and disease claims of subsidiaries’ former railroad and manufacturing operations.

27

AMERICAN FINANCIAL GROUP, INC. 10-Q

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — CONTINUED

M.    Insurance

Property and Casualty Insurance Reserves The following table provides an analysis of changes in the liability for losses and loss adjustment expenses during the first three months of 2024 and 2023 (in millions):

	Three months ended March 31,
	2024		2023
Balance at beginning of year	$	13,087	$	11,974
Less reinsurance recoverables, net of allowance	4,288		3,767
Net liability at beginning of year	8,799		8,207
Provision for losses and LAE occurring in the current period	962		883
Net decrease in the provision for claims of prior years	(50)		(63)
Total losses and LAE incurred	912		820
Payments for losses and LAE of:
Current year	(94)		(66)
Prior years	(895)		(815)
Total payments	(989)		(881)
Foreign currency translation and other	1		1
Net liability at end of period	8,723		8,147
Add back reinsurance recoverables, net of allowance	4,327		3,614
Gross unpaid losses and LAE included in the balance sheet at end of period	$	13,050	$	11,761

The net decrease in the provision for claims of prior years during the first three months of 2024 reflects (i) lower than anticipated losses in the crop business and lower than expected claim severity in the property and inland marine business (within the Property and transportation sub-segment), (ii) lower than anticipated claim severity in the workers’ compensation businesses and lower than expected claim frequency and severity in the executive liability business (within the Specialty casualty sub-segment) and (iii) lower than anticipated claim frequency in the fidelity business and lower than expected claim frequency and severity in the financial institutions business (within the Specialty financial sub-segment). This favorable development was partially offset by (i) higher than anticipated claim severity in the excess liability businesses and higher than expected claim frequency and severity in the social service business (within the Specialty casualty sub-segment), (ii) higher than anticipated claim severity in the innovative markets business (within the Specialty financial sub-segment) and (iii) net adverse development associated with AFG’s internal reinsurance program (within Other specialty).

The net decrease in the provision for claims of prior years during the first three months of 2023 reflects (i) lower than anticipated losses in the crop business, lower than expected claim frequency and severity in the trucking business and lower than anticipated claim frequency in the property and inland marine business (within the Property and transportation sub-segment), (ii) lower than anticipated claim severity in the workers’ compensation businesses and lower than expected claim frequency in the executive liability, excess and surplus and environmental businesses (within the Specialty casualty sub-segment) and (iii) lower than anticipated claim frequency in the surety and trade credit businesses (within the Specialty financial sub-segment). This favorable development was partially offset by (i) higher than anticipated claim severity in the public sector and excess liability businesses (within the Specialty casualty sub-segment) and (ii) net adverse development associated with AFG’s internal reinsurance program (within Other specialty).

Recoverables from Reinsurers and Premiums Receivable Progressions of the 2024 and 2023 allowance for expected credit losses on recoverables from reinsurers and premiums receivable are shown below (in millions):

	Recoverables from Reinsurers				Premiums Receivable
	2024		2023		2024		2023
Balance at December 31	$	10	$	8	$	15	$	8
Provision (credit) for expected credit losses	—		1		—		—
Write-offs charged against the allowance	—		—		—		—
Balance at March 31	$	10	$	9	$	15	$	8

28

AMERICAN FINANCIAL GROUP, INC. 10-Q

ITEM 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations

INDEX TO MD&A
	Page		Page
Forward-Looking Statements	29	Managed Investment Entities	36
Overview	30	Results of Operations	38
Critical Accounting Policies	30	General	38
Liquidity and Capital Resources	31	Segmented Statement of Earnings	39
Ratios	31	Property and Casualty Insurance	40
Condensed Consolidated Cash Flows	31	Holding Company, Other and Unallocated	49
Parent and Subsidiary Liquidity	32	Recent Accounting Standards	51
Investments	33
Uncertainties	35

FORWARD-LOOKING STATEMENTS

The Private Securities Litigation Reform Act of 1995 provides a safe harbor for forward-looking statements. Some of the forward-looking statements can be identified by the use of words such as “anticipates”, “believes”, “expects”, “projects”, “estimates”, “intends”, “plans”, “seeks”, “could”, “may”, “should”, “will” or the negative version of those words or other comparable terminology. Such forward-looking statements include statements relating to: expectations concerning market and other conditions and their effect on future premiums, revenues, earnings, investment activities and the amount and timing of share repurchases and special dividends; recoverability of asset values; expected losses and the adequacy of reserves for asbestos, environmental pollution and mass tort claims; rate changes; and improved loss experience.

Actual results and/or financial condition could differ materially from those contained in or implied by such forward-looking statements for a variety of reasons including but not limited to the following and the risks and uncertainties AFG describes in the “Risk Factors” section of its most recent Annual Report on Form 10-K, as updated by its other reports filed with the Securities and Exchange Commission.

•changes in financial, political and economic conditions, including changes in interest and inflation rates, currency fluctuations and extended economic recessions or expansions in the U.S. and/or abroad;

•performance of securities markets;

•new legislation or declines in credit quality or credit ratings that could have a material impact on the valuation of securities in AFG’s investment portfolio;

•the availability of capital;

•changes in insurance law or regulation, including changes in statutory accounting rules, including modifications to capital requirements;

•changes in the legal environment affecting AFG or its customers;

•tax law and accounting changes;

•levels of natural catastrophes and severe weather, terrorist activities (including any nuclear, biological, chemical or radiological events), incidents of war or losses resulting from pandemics, civil unrest and other major losses;

•disruption caused by cyber-attacks or other technology breaches or failures by AFG or its business partners and service providers, which could negatively impact AFG’s business and/or expose AFG to litigation;

•development of insurance loss reserves and establishment of other reserves, particularly with respect to amounts associated with asbestos and environmental claims;

•availability of reinsurance and ability of reinsurers to pay their obligations;

•competitive pressures;

•the ability to obtain adequate rates and policy terms;

•changes in AFG’s credit ratings or the financial strength ratings assigned by major ratings agencies to AFG’s operating subsidiaries;

•the impact of the conditions in the international financial markets and the global economy relating to AFG’s international operations; and

•effects on AFG’s reputation, including as a result of environmental, social and governance matters.

The forward-looking statements herein are made only as of the date of this report. The Company assumes no obligation to publicly update any forward-looking statements.

29

AMERICAN FINANCIAL GROUP, INC. 10-Q

Management’s Discussion and Analysis of Financial Condition and Results of Operations — Continued

OBJECTIVE

The objective of Management’s Discussion and Analysis is to provide a discussion and analysis of the financial statements and other statistical data that management believes will enhance the understanding of AFG’s financial condition, changes in financial condition and results of operations. The tables and narrative that follow are presented in a manner that is consistent with the information that AFG’s management uses to make operational decisions and allocate capital resources. They are provided to demonstrate the nature of the transactions and events that could impact AFG’s financial results. This discussion should be read in conjunction with the financial statements beginning on page 2.

OVERVIEW

Financial Condition

AFG is organized as a holding company with almost all of its operations being conducted by subsidiaries. AFG, however, has continuing cash needs for administrative expenses, the payment of principal and interest on borrowings, shareholder dividends, and taxes. Therefore, certain analyses are most meaningfully presented on a parent only basis while others are best done on a total enterprise basis. In addition, because its businesses are financial in nature, AFG does not prepare its consolidated financial statements using a current-noncurrent format. Consequently, certain traditional ratios and financial analysis tests are not meaningful.

Results of Operations

Through the operations of its subsidiaries, AFG is engaged primarily in property and casualty insurance, focusing on specialized commercial products for businesses.

AFG reported net earnings of $242 million ($2.89 per share, diluted) for the first quarter of 2024 compared to $212 million ($2.49 per share, diluted) for the first quarter of 2023. The year-over-year increase was due primarily to the impact of higher yields on fixed maturity investments coupled with net realized gains on securities in the first quarter of 2024 compared to net realized losses on securities in the first quarter of 2023. These items were partially offset by lower returns on AFG’s alternative investment portfolio (partnerships and similar investments and AFG-managed CLOs).

Outlook

AFG’s financial condition, results of operations and cash flows are impacted by the economic, legal and regulatory environment. Economic inflation, social inflation, supply chain disruption, labor shortages, banking system instability and other economic conditions may impact premium levels, loss cost trends and investment returns. Management believes that AFG’s strong financial position and current liquidity and capital at its subsidiaries will give AFG the flexibility to continue to effectively address and respond to the ongoing uncertainties presented by the macro-economic environment and the conflicts in Ukraine and Israel. AFG’s insurance subsidiaries continue to have capital at or in excess of the levels required by ratings agencies in order to maintain their current ratings, and the parent company does not have any near-term debt maturities.

Management expects continued premium growth and strong underwriting results in the ongoing favorable property and casualty insurance market. In addition, the deployment of cash during the elevated interest rate environment (since early 2022) will continue to have a positive impact on investment income on fixed maturity investments in 2024.

CRITICAL ACCOUNTING POLICIES

Significant accounting policies are summarized in Note A — “Accounting Policies” to the financial statements. The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that can have a significant effect on amounts reported in the financial statements. As more information becomes known, these estimates and assumptions change and, thus, impact amounts reported in the future. The areas where management believes the degree of judgment required to determine amounts recorded in the financial statements is most significant are as follows:

•the valuation of investments, including the determination of impairment allowances,

•the establishment of insurance reserves, especially asbestos and environmental-related reserves,

•the recoverability of reinsurance, and

•the establishment of asbestos and environmental liabilities of former railroad and manufacturing operations.

30

AMERICAN FINANCIAL GROUP, INC. 10-Q

Management’s Discussion and Analysis of Financial Condition and Results of Operations — Continued

For a discussion of these policies, see Management’s Discussion and Analysis — “Critical Accounting Policies” in AFG’s 2023 Form 10-K.

LIQUIDITY AND CAPITAL RESOURCES

Ratios

AFG’s debt to total capital ratio on a consolidated basis is shown below (dollars in millions):

				December 31,
	March 31, 2024			2023			2022
Principal amount of long-term debt	$	1,498		$	1,498		$	1,521
Total capital	6,053			6,075			6,116
Ratio of debt to total capital:
Including subordinated debt	24.7		%	24.7		%	24.9		%
Excluding subordinated debt	13.6		%	13.5		%	13.8		%

The ratio of debt to total capital is a non-GAAP measure that management believes is useful for investors, analysts and ratings agencies to evaluate AFG’s financial strength and liquidity and to provide insight into how AFG finances its operations. The ratio is calculated by dividing the principal amount of AFG’s long-term debt by its total capital, which includes long-term debt and shareholders’ equity (excluding accumulated other comprehensive income (loss), net of tax). In addition, maintaining a ratio of debt, excluding subordinated debt and debt secured by real estate (if any), to total capital of 35% or lower is a financial covenant in AFG’s bank credit facility.

Condensed Consolidated Cash Flows

AFG’s principal sources of cash include insurance premiums, income from its investment portfolio and proceeds from the maturities, redemptions and sales of investments. Insurance premiums in excess of acquisition expenses and operating costs are invested until they are needed to meet policyholder obligations or made available to the parent company through dividends to cover debt obligations and corporate expenses, and to provide returns to shareholders through share repurchases and dividends. Cash flows from operating, investing and financing activities as detailed in AFG’s Consolidated Statement of Cash Flows are shown below (in millions):

	Three months ended March 31,
	2024		2023
Net cash provided by operating activities	$	107	$	403
Net cash provided by (used in) investing activities	(155)		73
Net cash used in financing activities	(90)		(491)
Net change in cash and cash equivalents	$	(138)	$	(15)

Net Cash Provided by Operating Activities   AFG’s property and casualty insurance operations typically produce positive net operating cash flows as premiums collected and investment income exceed policy acquisition costs, claims payments and operating expenses. AFG’s net cash provided by operating activities is impacted by the level and timing of property and casualty premiums, claim and expense payments and recoveries from reinsurers. Cash flows provided by operating activities also include the activity of AFG’s managed investment entities (collateralized loan obligations (“CLO”)) other than those activities included in investing or financing activities. The changes in the assets and liabilities of the managed investment entities included in operating activities reduced cash flows from operating activities by $124 million during the first three months of 2024 and increased cash flows from operating activities by $139 million in the first three months of 2023, accounting for a $263 million decrease in cash flows from operating activities in the 2024 period compared to the 2023 period. As discussed in Note A — “Accounting Policies — Managed Investment Entities” to the financial statements, AFG has no right to use the CLO assets and no obligation to pay the CLO liabilities and such assets and liabilities are shown separately in AFG’s Balance Sheet. Excluding the impact of the managed investment entities, net cash provided by operating activities was $231 million and $264 million in the first three months of 2024 and 2023, respectively.

Net Cash Provided by (Used in) Investing Activities   AFG’s investing activities consist primarily of the investment of funds provided by its property and casualty businesses. Investing activities also include the purchase and

31

AMERICAN FINANCIAL GROUP, INC. 10-Q

Management’s Discussion and Analysis of Financial Condition and Results of Operations — Continued

disposal of managed investment entity investments, which are presented separately in AFG’s Balance Sheet. Net investment activity in the managed investment entities was a $73 million use of cash in the first three months of 2024 compared to $94 million in the first three months of 2023, accounting for a $21 million decrease in net cash provided by (used in) investing activities in the first three months of 2024 compared to the same 2023 period. See Note A — “Accounting Policies — Managed Investment Entities” and Note G — “Managed Investment Entities” to the financial statements. Excluding the activity of the managed investment entities, investing activities were an $82 million use of cash in the first three months of 2024 compared to a $167 million source of cash in the first three months of 2023.

Net Cash Used in Financing Activities   AFG’s financing activities consist primarily of issuances and retirements of long-term debt, issuances and repurchases of common stock and dividend payments. Net cash used in financing activities was $90 million for the first three months of 2024 compared to $491 million in the first three months of 2023, a decrease of $401 million. AFG paid cash dividends totaling $268 million in the first three months of 2024 compared to $393 million in the first three months of 2023, a decrease in cash used by financing activities of $125 million. There were no debt retirements in the first three months of 2024 compared to $16 million in debt retirements during the first three months of 2023. During the first three months of 2024, AFG did not repurchase any of its Common Stock compared to repurchases of $24 million in the comparable 2023 period. Financing activities also include issuances and retirements of managed investment entity liabilities, which are nonrecourse to AFG and presented separately in AFG’s Balance Sheet. Issuances of managed investment entity liabilities exceeded retirements by $172 million in the first three months of 2024 compared to retirements exceeding issuances by $62 million in the first three months of 2023, accounting for a $234 million decrease in net cash used in financing activities in the 2024 period compared to the 2023 period. See Note A — “Accounting Policies — Managed Investment Entities” and Note G — “Managed Investment Entities” to the financial statements.

Parent and Subsidiary Liquidity

Parent Holding Company Liquidity   Management believes AFG has sufficient resources to meet its liquidity requirements. If funds generated from operations, including dividends, tax payments and borrowings from subsidiaries, are insufficient to meet fixed charges in any period, AFG would be required to utilize parent company cash and investments or to generate cash through borrowings, sales of other assets or similar transactions.

AFG's operations continue to generate significant excess capital for future returns of capital to shareholders in the form of regular and special cash dividends and through opportunistic share repurchases or to be deployed into its property and casualty businesses as management identifies the potential for profitable organic growth, and opportunities to expand through acquisitions of established businesses or start-ups that meet target return thresholds.

AFG paid a special cash dividend totaling $209 million ($2.50 per share) on February 28, 2024.

AFG may, at any time and from time to time, seek to retire or purchase its outstanding debt through cash purchases or exchanges for equity or debt, in open-market purchases, privately negotiated transactions or otherwise. Such repurchases or exchanges, if any, will be upon such terms and at such prices as management may determine, and will depend on prevailing market conditions, AFG’s liquidity requirements, contractual restrictions and other factors.

During 2023, AFG repurchased 1,872,544 shares of its Common Stock for $213 million, paid special cash dividends totaling $466 million ($4.00 per share in February and $1.50 per share in November) and repurchased $23 million principal amount of its senior notes for $21 million cash.

At March 31, 2024, AFG (parent) held approximately $370 million in cash and investments. Management believes that AFG’s cash balances are held at stable banking institutions, although the amounts of many of these deposits are in excess of federally insured balances. AFG can borrow up to $450 million under its revolving credit facility, which expires in June 2028. Amounts borrowed under this agreement bear interest at rates ranging from 1.00% to 1.75% (based on AFG’s credit rating, currently 1.25%) over a SOFR-based floating rate. There were no borrowings under AFG’s credit facilities, or under any other parent company short-term borrowing arrangements, during 2023 or the first three months of 2024.

Under a tax allocation agreement with AFG, all 80% (or more) owned U.S. subsidiaries generally pay taxes to (or recover taxes from) AFG based on each subsidiary’s contribution to amounts due under AFG’s consolidated tax return.

Subsidiary Liquidity   The liquidity requirements of AFG’s insurance subsidiaries relate primarily to the policyholder claims and underwriting expenses and payments of dividends and taxes to AFG. Historically, cash flows from premiums and investment income have generally provided more than sufficient funds to meet these requirements. Funds received in

32

AMERICAN FINANCIAL GROUP, INC. 10-Q

Management’s Discussion and Analysis of Financial Condition and Results of Operations — Continued

excess of cash requirements are generally invested in marketable securities. In addition, the insurance subsidiaries generally hold a significant amount of highly liquid, short duration investments.

AFG believes its insurance subsidiaries maintain sufficient liquidity to pay claims and underwriting expenses. In addition, these subsidiaries have sufficient capital to meet commitments in the event of unforeseen events such as reserve deficiencies, inadequate premium rates or reinsurer insolvencies. Even in the current uncertain economic environment, management believes that the capital levels in AFG’s insurance subsidiaries are adequate to maintain its business and rating agency ratings. Nonetheless, changes in statutory accounting rules, significant declines in the fair value of the insurance subsidiaries’ investment portfolios or significant ratings downgrades on these investments, could create a need for additional capital.

Investments

AFG’s investment portfolio at March 31, 2024, contained $10.37 billion in fixed maturity securities classified as available for sale and carried at fair value with unrealized gains and losses included in accumulated other comprehensive income (loss) and $57 million in fixed maturities classified as trading with holding gains and losses included in net investment income. In addition, AFG’s investment portfolio includes $539 million in equity securities carried at fair value with holding gains and losses included in realized gains (losses) on securities and $501 million in equity securities carried at fair value with holding gains and losses included in net investment income.

Fair values for AFG’s portfolio are determined by AFG’s internal investment professionals using data from nationally recognized pricing services, non-binding broker quotes and other market information. Fair values of equity securities are generally based on published closing prices. For AFG’s fixed maturity portfolio, approximately 89% was priced using pricing services at March 31, 2024 and 4% was priced using non-binding broker quotes. When prices obtained for the same security vary, AFG’s internal investment professionals select the price they believe is most indicative of an exit price.

The pricing services use a variety of observable inputs to estimate fair value of fixed maturities that do not trade on a daily basis. Based upon information provided by the pricing services, these inputs include, but are not limited to, recent reported trades, benchmark yields, issuer spreads, bids or offers, reference data, and measures of volatility. Included in the pricing of mortgage-backed securities (“MBS”) are estimates of the rate of future prepayments and defaults of principal over the remaining life of the underlying collateral. Due to the lack of transparency in the process that brokers use to develop prices, valuations that are based on brokers’ prices are classified as Level 3 in the GAAP hierarchy unless the price can be corroborated, for example, by comparison to similar securities priced using observable inputs.

Valuation techniques utilized by pricing services and prices obtained from external sources are reviewed by AFG’s internal investment professionals who are familiar with the securities being priced and the markets in which they trade to ensure the fair value determination is representative of an exit price. To validate the appropriateness of the prices obtained, these investment managers consider widely published indices (as benchmarks), recent trades, changes in interest rates, general economic conditions and the credit quality of the specific issuers. In addition, AFG communicates directly with pricing services regarding the methods and assumptions used in pricing, including verifying, on a test basis, the inputs used by the services to value specific securities.

In general, the fair value of AFG’s fixed maturity investments is inversely correlated to changes in interest rates. The following table demonstrates the sensitivity of such fair values to reasonably likely changes in interest rates by illustrating the estimated effect on AFG’s fixed maturity portfolio that an immediate increase of 100 basis points in the interest rate yield curve would have had at March 31, 2024 (dollars in millions). Effects of increases or decreases from the 100 basis points illustrated would be approximately proportional.

Fair value of fixed maturity portfolio	$	10,428
Percentage impact on fair value of 100 bps increase in interest rates	(3.0		%)
Pretax impact on fair value of fixed maturity portfolio	$	(313)

Approximately 94% of the fixed maturities held by AFG at March 31, 2024, were rated “investment grade” (credit rating of AAA to BBB) by nationally recognized rating agencies, 3% were rated “non-investment grade” and 3% were not rated. Investment grade securities generally bear lower yields and lower degrees of risk than those that are unrated and non-investment grade. Management believes that the high-quality investment portfolio should generate a stable and predictable investment return.

33

AMERICAN FINANCIAL GROUP, INC. 10-Q

Management’s Discussion and Analysis of Financial Condition and Results of Operations — Continued

Municipal bonds represented approximately 8% of AFG’s fixed maturity portfolio at March 31, 2024. AFG’s municipal bond portfolio is high quality, with over 99% of the securities rated investment grade at that date. The portfolio is well diversified across the states of issuance and individual issuers. At March 31, 2024, approximately 98% of the municipal bond portfolio was held in revenue bonds, with the remaining 2% held in general obligation bonds.

AFG has less than $100 million of direct exposure to office commercial real estate through property ownership, mortgages or equity method investments. AFG’s fixed maturity portfolio includes securities (the majority of which are AAA-rated) with a carrying value of approximately $600 million that have minimal exposure to office commercial real estate.

Summarized information for the unrealized gains and losses recorded in AFG’s Balance Sheet at March 31, 2024, is shown in the following table (dollars in millions). Approximately $259 million of available for sale fixed maturity securities had no unrealized gains or losses at March 31, 2024.

	Securities With Unrealized Gains			Securities With Unrealized Losses
Available for Sale Fixed Maturities
Fair value of securities	$	3,769		$	6,343
Amortized cost of securities, net of allowance for expected credit losses	$	3,673		$	6,791
Gross unrealized gain (loss)	$	96		$	(448)
Fair value as % of amortized cost	103		%	93		%
Number of security positions	697			1,451
Number individually exceeding $2 million gain or loss	1			43
Concentration of gains (losses) by type or industry (exceeding 5% of unrealized):
Mortgage-backed securities	$	25		$	(156)
Collateralized loan obligations	13			(22)
Other asset-backed securities	13			(102)
Banking	9			(23)
States and municipalities	6			(45)
Asset managers	4			(28)
Percentage rated investment grade	96		%	95		%

The table below sets forth the scheduled maturities of AFG’s available for sale fixed maturity securities at March 31, 2024, based on their fair values. Securities with sinking funds are reported at average maturity. Actual maturities may differ from contractual maturities because certain securities may be called or prepaid by the issuers.

	Securities With Unrealized Gains		Securities With Unrealized Losses
Maturity
One year or less	1	%	5	%
After one year through five years	20	%	24	%
After five years through ten years	18	%	9	%
After ten years	3	%	8	%
	42	%	46	%
Collateralized loan obligations and other asset-backed securities (average life of approximately 3 years)	45	%	35	%
Mortgage-backed securities (average life of approximately 6.5 years)	13	%	19	%
	100	%	100	%

34

AMERICAN FINANCIAL GROUP, INC. 10-Q

Management’s Discussion and Analysis of Financial Condition and Results of Operations — Continued

The table below (dollars in millions) summarizes the unrealized gains and losses on fixed maturity securities by dollar amount:

	Aggregate Fair Value		Aggregate Unrealized Gain (Loss)		Fair Value as % of Cost
Fixed Maturities at March 31, 2024
Securities with unrealized gains:
Exceeding $500,000 (41 securities)	$	712	$	32	105	%
$500,000 or less (656 securities)	3,057		64		102	%
	$	3,769	$	96	103	%
Securities with unrealized losses:
Exceeding $500,000 (227 securities)	$	2,589	$	(324)	89	%
$500,000 or less (1,224 securities)	3,754		(124)		97	%
	$	6,343	$	(448)	93	%

The following table (dollars in millions) summarizes the unrealized losses for all securities with unrealized losses by issuer quality and the length of time those securities have been in an unrealized loss position:

	Aggregate Fair Value		Aggregate Unrealized Loss		Fair Value as % of Cost
Securities with Unrealized Losses at March 31, 2024
Investment grade fixed maturities with losses for:
Less than one year (201 securities)	$	889	$	(7)	99	%
One year or longer (1,048 securities)	5,122		(418)		92	%
	$	6,011	$	(425)	93	%
Non-investment grade fixed maturities with losses for:
Less than one year (26 securities)	$	47	$	(2)	96	%
One year or longer (176 securities)	285		(21)		93	%
	$	332	$	(23)	94	%

When a decline in the value of a specific investment is considered to be other-than-temporary, an allowance for credit losses (impairment) is charged to earnings (accounted for as a realized loss). The determination of whether unrealized losses are other-than-temporary requires judgment based on subjective as well as objective factors as detailed in AFG’s 2023 Form 10-K under Management’s Discussion and Analysis — “Investments.”

Based on its analysis, management believes AFG will recover its cost basis (net of any allowance) in the fixed maturity securities with unrealized losses and that AFG has the ability to hold the securities until they recover in value and had no intent to sell them at March 31, 2024. Although AFG has the ability to continue holding its fixed maturity investments with unrealized losses, its intent to hold them may change due to deterioration in the issuers’ creditworthiness, decisions to lessen exposure to a particular issuer or industry, asset/liability management decisions, market movements, changes in views about appropriate asset allocation or the desire to offset taxable realized gains. Should AFG’s ability or intent change regarding a particular security, a charge for impairment would likely be required. While it is not possible to accurately predict if or when a specific security will become impaired, increases in the allowance for credit losses could be material to results of operations in future periods. Significant declines in the fair value of AFG’s investment portfolio could have a significant adverse effect on AFG’s liquidity. For information on AFG’s realized gains (losses) on securities, see “Results of Operations — Realized Gains (Losses) on Securities.”

Uncertainties

Management believes that the areas posing the greatest risk of material loss are the adequacy of its insurance reserves and contingencies arising out of its former railroad and manufacturing operations. See Management’s Discussion and Analysis — “Uncertainties — Asbestos and Environmental-related (“A&E”) Insurance Reserves” in AFG’s 2023 Form 10–K.

35

AMERICAN FINANCIAL GROUP, INC. 10-Q

Management’s Discussion and Analysis of Financial Condition and Results of Operations — Continued

MANAGED INVESTMENT ENTITIES

Accounting standards require AFG to consolidate its investments in collateralized loan obligation (“CLO”) entities that it manages and owns an interest in (in the form of debt). See Note A — “Accounting Policies — Managed Investment Entities” and Note G — “Managed Investment Entities” to the financial statements. The effect of consolidating these entities is shown in the tables below (in millions). The “Before CLO Consolidation” columns include AFG’s investment and earnings in the CLOs on an unconsolidated basis.

CONDENSED CONSOLIDATING BALANCE SHEET

	Before CLO Consolidation		Managed Investment Entities		Consol. Entries			Consolidated As Reported
March 31, 2024
Assets:
Cash and investments	$	15,453	$	—	$	(199)	(*)	$	15,254
Assets of managed investment entities	—		4,669		—			4,669
Other assets	10,080		—		(2)		(*)	10,078
Total assets	$	25,533	$	4,669	$	(201)		$	30,001
Liabilities:
Unpaid losses and loss adjustment expenses and unearned premiums	$	16,700	$	—	$	—		$	16,700
Liabilities of managed investment entities	—		4,639		(171)		(*)	4,468
Long-term debt and other liabilities	4,593		—		—			4,593
Total liabilities	21,293		4,639		(171)			25,761
Shareholders’ equity:
Common Stock and Capital surplus	1,466		30		(30)			1,466
Retained earnings	3,089		—		—			3,089
Accumulated other comprehensive income (loss), net of tax	(315)		—		—			(315)
Total shareholders’ equity	4,240		30		(30)			4,240
Total liabilities and shareholders’ equity	$	25,533	$	4,669	$	(201)		$	30,001
December 31, 2023
Assets:
Cash and investments	$	15,438	$	—	$	(175)	(*)	$	15,263
Assets of managed investment entities	—		4,484		—			4,484
Other assets	10,042		—		(2)		(*)	10,040
Total assets	$	25,480	$	4,484	$	(177)		$	29,787
Liabilities:
Unpaid losses and loss adjustment expenses and unearned premiums	$	16,538	$	—	$	—		$	16,538
Liabilities of managed investment entities	—		4,446		(139)		(*)	4,307
Long-term debt and other liabilities	4,684		—		—			4,684
Total liabilities	21,222		4,446		(139)			25,529
Shareholders’ equity:
Common Stock and Capital surplus	1,456		38		(38)			1,456
Retained earnings	3,121		—		—			3,121
Accumulated other comprehensive income (loss), net of tax	(319)		—		—			(319)
Total shareholders’ equity	4,258		38		(38)			4,258
Total liabilities and shareholders’ equity	$	25,480	$	4,484	$	(177)		$	29,787

(*)Elimination of the fair value of AFG’s investment in CLOs and related accrued interest.

36

AMERICAN FINANCIAL GROUP, INC. 10-Q

Management’s Discussion and Analysis of Financial Condition and Results of Operations — Continued

CONDENSED CONSOLIDATING STATEMENT OF EARNINGS

	Before CLO Consol. (a)		Managed Investment Entities		Consol. Entries			Consolidated As Reported
Three months ended March 31, 2024
Revenues:
Property and casualty insurance net earned premiums	$	1,546	$	—	$	—		$	1,546
Net investment income	212		—		(14)		(b)	198
Realized gains (losses) on securities	14		—		—			14
Income of managed investment entities:
Investment income	—		99		—			99
Gain (loss) on change in fair value of assets/liabilities	—		6		4		(b)	10
Other income	42		—		(3)		(c)	39
Total revenues	1,814		105		(13)			1,906
Costs and Expenses:
Insurance benefits and expenses	1,415		—		—			1,415
Expenses of managed investment entities	—		104		(12)		(b)(c)	92
Interest charges on borrowed money and other expenses	95		—		—			95
Total costs and expenses	1,510		104		(12)			1,602
Earnings before income taxes	304		1		(1)			304
Provision for income taxes	62		—		—			62
Net earnings	$	242	$	1	$	(1)		$	242
Three months ended March 31, 2023
Revenues:
Property and casualty insurance net earned premiums	$	1,437	$	—	$	—		$	1,437
Net investment income	218		—		(1)		(b)	217
Realized gains (losses) on securities	(46)		—		—			(46)
Income of managed investment entities:
Investment income	—		104		—			104
Gain (loss) on change in fair value of assets/liabilities	—		(1)		(3)		(b)	(4)
Other income	36		—		(4)		(c)	32
Total revenues	1,645		103		(8)			1,740
Costs and Expenses:
Insurance benefits and expenses	1,293		—		—			1,293
Expenses of managed investment entities	—		103		(8)		(b)(c)	95
Interest charges on borrowed money and other expenses	88		—		—			88
Total costs and expenses	1,381		103		(8)			1,476
Earnings before income taxes	264		—		—			264
Provision for income taxes	52		—		—			52
Net earnings	$	212	$	—	$	—		$	212

(a)Includes income of $14 million in the first three months of 2024 and $1 million in the first three months of 2023, representing the change in fair value of AFG’s CLO investments and $3 million and $4 million in the first three months of 2024 and 2023, respectively, in CLO management fees earned.

(b)Elimination of the change in fair value of AFG’s investments in the CLOs, including $9 million and $4 million in the first three months of 2024 and 2023, respectively, in distributions recorded as interest expense by the CLOs.

(c)Elimination of management fees earned by AFG.

37

AMERICAN FINANCIAL GROUP, INC. 10-Q

Management’s Discussion and Analysis of Financial Condition and Results of Operations — Continued

RESULTS OF OPERATIONS

General

AFG’s net earnings, determined in accordance with GAAP, include certain items that may not be indicative of its ongoing core operations. Core net operating earnings excludes realized gains (losses) on securities because such gains and losses are influenced significantly by financial markets, interest rates and the timing of sales. In addition, special charges related to coverage that AFG no longer writes, such as asbestos and environmental exposures, are excluded from core earnings.

The following table (in millions, except per share amounts) identifies non-core items and reconciles net earnings to core net operating earnings, a non-GAAP financial measure. AFG believes core net operating earnings is a useful tool for investors and analysts in analyzing ongoing operating trends and for management to evaluate financial performance against historical results because it believes this provides a more comparable measure of its continuing business.

	Three months ended March 31,
	2024		2023
Components of net earnings:
Core operating earnings before income taxes	$	290	$	308
Pretax non-core items:
Realized gains (losses) on securities	14		(46)
Gain on retirement of debt	—		2
Earnings before income taxes	304		264
Provision for income taxes:
Core operating earnings	59		61
Non-core items:
Realized gains (losses) on securities	3		(9)
Gain on retirement of debt	—		—
Total provision for income taxes	62		52
Net earnings	$	242	$	212
Net earnings:
Core net operating earnings	$	231	$	247
Realized gains (losses) on securities	11		(37)
Gain on retirement of debt	—		2
Net earnings	$	242	$	212
Diluted per share amounts:
Core net operating earnings	$	2.76	$	2.89
Realized gains (losses) on securities	0.13		(0.42)
Gain on retirement of debt	—		0.02
Net earnings	$	2.89	$	2.49

Net earnings were $242 million in the first three months of 2024 compared to $212 million in the first three months of 2023 reflecting net realized gains on securities in the first three months of 2024 compared to net realized losses on securities in the first three months of 2023, partially offset by lower core net operating earnings. Core net operating earnings for the first three months of 2024 decreased $16 million compared to the first three months of 2023 reflecting lower returns on AFG’s alternative investment portfolio, partially offset by the impact of higher investment income outside of alternative investments. Net realized gains (losses) on securities in the first three months of 2024 and 2023 include after-tax gains of $15 million and after-tax losses of $18 million, respectively, resulting from the change in fair value of equity securities that were still held at the balance sheet date.

38

AMERICAN FINANCIAL GROUP, INC. 10-Q

Management’s Discussion and Analysis of Financial Condition and Results of Operations — Continued

RESULTS OF OPERATIONS — THREE MONTHS ENDED MARCH 31, 2024 AND 2023

Segmented Statement of Earnings

AFG reports its operations as two segments: (i) Property and casualty insurance (“P&C”) and (ii) Other, which includes holding company costs and income and expenses related to the managed investment entities (“MIEs”).

AFG’s net earnings, determined in accordance with GAAP, include certain items that may not be indicative of its ongoing core operations. The following tables for the three months ended March 31, 2024 and 2023 identify such items by segment and reconcile net earnings to core net operating earnings, a non-GAAP financial measure that AFG believes is a useful tool for investors and analysts in analyzing ongoing operating trends (in millions):

			Other
	P&C		Consol. MIEs		Holding Co., other and unallocated		Total		Non-core reclass		GAAP Total
Three months ended March 31, 2024
Revenues:
Property and casualty insurance net earned premiums	$	1,546	$	—	$	—	$	1,546	$	—	$	1,546
Net investment income	205		(14)		7		198		—		198
Realized gains (losses) on securities	—		—		—		—		14		14
Income of MIEs:
Investment income	—		99		—		99		—		99
Gain (loss) on change in fair value of assets/liabilities	—		10		—		10		—		10
Other income	2		(3)		40		39		—		39
Total revenues	1,753		92		47		1,892		14		1,906
Costs and Expenses:
Property and casualty insurance:
Losses and loss adjustment expenses	907		—		5		912		—		912
Commissions and other underwriting expenses	486		—		17		503		—		503
Interest charges on borrowed money	—		—		19		19		—		19
Expenses of MIEs	—		92		—		92		—		92
Other expenses	20		—		56		76		—		76
Total costs and expenses	1,413		92		97		1,602		—		1,602
Earnings before income taxes	340		—		(50)		290		14		304
Provision for income taxes	70		—		(11)		59		3		62
Core Net Operating Earnings	270		—		(39)		231
Non-core earnings (loss) (*):
Realized gains (losses) on securities, net of tax	—		—		11		11		(11)		—
Net Earnings	$	270	$	—	$	(28)	$	242	$	—	$	242

39

AMERICAN FINANCIAL GROUP, INC. 10-Q

Management’s Discussion and Analysis of Financial Condition and Results of Operations — Continued

			Other
	P&C		Consol. MIEs		Holding Co., other and unallocated		Total		Non-core reclass		GAAP Total
Three months ended March 31, 2023
Revenues:
Property and casualty insurance net earned premiums	$	1,437	$	—	$	—	$	1,437	$	—	$	1,437
Net investment income	207		(1)		11		217		—		217
Realized gains (losses) on securities	—		—		—		—		(46)		(46)
Income of MIEs:
Investment income	—		104		—		104		—		104
Gain (loss) on change in fair value of assets/liabilities	—		(4)		—		(4)		—		(4)
Other income	5		(4)		31		32		—		32
Total revenues	1,649		95		42		1,786		(46)		1,740
Costs and Expenses:
Property and casualty insurance:
Losses and loss adjustment expenses	820		—		—		820		—		820
Commissions and other underwriting expenses	463		—		10		473		—		473
Interest charges on borrowed money	—		—		19		19		—		19
Expenses of MIEs	—		95		—		95		—		95
Other expenses	16		—		55		71		(2)		69
Total costs and expenses	1,299		95		84		1,478		(2)		1,476
Earnings before income taxes	350		—		(42)		308		(44)		264
Provision for income taxes	71		—		(10)		61		(9)		52
Core Net Operating Earnings	279		—		(32)		247
Non-core earnings (loss) (*):
Realized gains (losses) on securities, net of tax	—		—		(37)		(37)		37		—
Gain on retirement of debt, net of tax	—		—		2		2		(2)		—
Net Earnings	$	279	$	—	$	(67)	$	212	$	—	$	212

(*)See the reconciliation of core earnings to GAAP net earnings under “Results of Operations — General” for details on the tax impacts of these reconciling items.

Property and Casualty Insurance Segment — Results of Operations

Performance measures such as underwriting profit or loss and related combined ratios are often used by property and casualty insurers to help users of their financial statements better understand the company’s performance. Underwriting profitability is measured by the combined ratio, which is a sum of the ratios of losses and loss adjustment expenses, and commissions and other underwriting expenses to premiums. A combined ratio under 100% indicates an underwriting profit. The combined ratio does not reflect net investment income, other income, other expenses or federal income taxes.

AFG’s property and casualty insurance operations contributed $340 million in pretax earnings in the first three months of 2024 compared to $350 million in the first three months of 2023, a decrease of $10 million (3%). The decrease in pretax earnings reflects lower investment income from AFG’s alternative investment portfolio (partnerships and similar investments and AFG-managed CLOs), lower other income and higher other expenses, partially offset by higher investment income outside of alternative investments in the first three months of 2024 compared to the first three months of 2023.

40

AMERICAN FINANCIAL GROUP, INC. 10-Q

Management’s Discussion and Analysis of Financial Condition and Results of Operations — Continued

The following table details AFG’s earnings before income taxes from its property and casualty insurance operations for the three months ended March 31, 2024 and 2023 (dollars in millions):

	Three months ended March 31,
	2024			2023			% Change
Gross written premiums	$	2,336		$	2,155		8	%
Reinsurance premiums ceded	(702)			(636)			10	%
Net written premiums	1,634			1,519			8	%
Change in unearned premiums	(88)			(82)			7	%
Net earned premiums	1,546			1,437			8	%
Loss and loss adjustment expenses	907			820			11	%
Commissions and other underwriting expenses	486			463			5	%
Underwriting gain	153			154			(1	%)
Net investment income	205			207			(1	%)
Other income and expenses, net	(18)			(11)			64	%
Earnings before income taxes	$	340		$	350		(3	%)
	Three months ended March 31,
	2024			2023			Change
Combined Ratios:
Specialty lines
Loss and LAE ratio	58.6		%	57.0		%	1.6	%
Underwriting expense ratio	31.5		%	32.2		%	(0.7	%)
Combined ratio	90.1		%	89.2		%	0.9	%
Aggregate — including exited lines
Loss and LAE ratio	58.6		%	57.1		%	1.5	%
Underwriting expense ratio	31.5		%	32.2		%	(0.7	%)
Combined ratio	90.1		%	89.3		%	0.8	%

AFG reports the underwriting performance of its Specialty property and casualty insurance business in the following sub-segments: (i) Property and transportation, (ii) Specialty casualty and (iii) Specialty financial.

To understand the overall profitability of particular lines, the timing of claims payments and the related impact of investment income must be considered. Certain “short-tail” lines of business (primarily property coverages) generally have quick loss payouts, which reduce the time funds are held, thereby limiting investment income earned thereon. In contrast, “long-tail” lines of business (primarily liability coverages and workers’ compensation) generally have payouts that are either structured over many years or take many years to settle, thereby significantly increasing investment income earned on related premiums received.

Gross Written Premiums

Gross written premiums (“GWP”) for AFG’s property and casualty insurance segment were $2.34 billion for the first three months of 2024 compared to $2.16 billion for the first three months of 2023, an increase of $181 million (8%). Detail of AFG’s property and casualty gross written premiums is shown below (dollars in millions):

	Three months ended March 31,
	2024				2023
	GWP		%		GWP		%		% Change
Property and transportation	$	959	41	%	$	872	41	%	10	%
Specialty casualty	1,097		47	%	1,061		49	%	3	%
Specialty financial	280		12	%	222		10	%	26	%
	$	2,336	100	%	$	2,155	100	%	8	%

41

AMERICAN FINANCIAL GROUP, INC. 10-Q

Management’s Discussion and Analysis of Financial Condition and Results of Operations — Continued

Reinsurance Premiums Ceded

Reinsurance premiums ceded (“Ceded”) for AFG’s property and casualty insurance segment were 30% of gross written premiums for both the first three months of 2024 and the first three months of 2023. Detail of AFG’s property and casualty reinsurance premiums ceded is shown below (dollars in millions):

	Three months ended March 31,
	2024				2023				Change in
	Ceded		% of GWP		Ceded		% of GWP		% of GWP
Property and transportation	$	(368)	38	%	$	(320)	37	%	1	%
Specialty casualty	(346)		32	%	(339)		32	%	—	%
Specialty financial	(46)		16	%	(38)		17	%	(1	%)
Other specialty	58				61
	$	(702)	30	%	$	(636)	30	%	—	%

Net Written Premiums

Net written premiums (“NWP”) for AFG’s property and casualty insurance segment were $1.63 billion for the first three months of 2024 compared to $1.52 billion for the first three months of 2023, an increase of $115 million (8%). Detail of AFG’s property and casualty net written premiums is shown below (dollars in millions):

	Three months ended March 31,
	2024				2023
	NWP		%		NWP		%		% Change
Property and transportation	$	591	36	%	$	552	36	%	7	%
Specialty casualty	751		46	%	722		48	%	4	%
Specialty financial	234		14	%	184		12	%	27	%
Other specialty	58		4	%	61		4	%	(5	%)
	$	1,634	100	%	$	1,519	100	%	8	%

Net Earned Premiums

Net earned premiums (“NEP”) for AFG’s property and casualty insurance segment were $1.55 billion for the first three months of 2024 compared to $1.44 billion for the first three months of 2023, an increase of $109 million (8%). Detail of AFG’s property and casualty net earned premiums is shown below (dollars in millions):

	Three months ended March 31,
	2024				2023
	NEP		%		NEP		%		% Change
Property and transportation	$	513	33	%	$	475	33	%	8	%
Specialty casualty	730		47	%	704		49	%	4	%
Specialty financial	243		16	%	196		14	%	24	%
Other specialty	60		4	%	62		4	%	(3	%)
	$	1,546	100	%	$	1,437	100	%	8	%

Gross written premiums for the first three months of 2024 increased $181 million (8%) compared to the first three months of 2023, reflecting growth in each of the Specialty property and casualty sub-segments as a result of additional crop premiums from the Crop Risk Services (“CRS”) acquisition, new business opportunities, increased exposures and a good renewal rate environment. Overall average renewal rates increased 6% in the first three months of 2024. Excluding overall rate decreases in the workers’ compensation businesses, renewal rates increased 8%.

Property and transportation Gross written premiums increased $87 million (10%) in the first three months of 2024 compared to the first three months of 2023. Additional crop premium associated with the CRS acquisition as well as new business opportunities, a favorable rate environment and strong account retentions in the commercial auto and ocean marine businesses were the primary drivers of the increase in premiums. Average renewal rates increased approximately 9% for this group in the first three months of 2024. Reinsurance premiums ceded as a percentage of gross written premiums increased 1 percentage point in the first three months of 2024 compared to the first three months of 2023 reflecting the impact of higher premiums in the crop business and growth in alternative risk transfer products in the

42

AMERICAN FINANCIAL GROUP, INC. 10-Q

Management’s Discussion and Analysis of Financial Condition and Results of Operations — Continued

transportation businesses, both of which cede a higher percentage of premiums than some of the other businesses in the Property and transportation sub-segment.

Specialty casualty Gross written premiums increased $36 million (3%) in the first three months of 2024 compared to the first three months of 2023. The higher year-over-year premiums resulted primarily from growth in the excess and surplus and excess liability businesses as a result of rate increases and new business opportunities. Higher rates, strong account retention and new business opportunities in several of the targeted markets businesses contributed to the year-over-year growth to a lesser extent. Average renewal rates increased approximately 5% for this group in the first three months of 2024. Excluding overall rate decreases in the workers’ compensation businesses, renewal rates for this group increased approximately 8%. Reinsurance premiums ceded as a percentage of gross written premiums were similar in the first three months of 2024 and the first three months of 2023 and reflect growth in businesses with higher retentions, offset by higher cessions in the public sector and environmental businesses.

Specialty financial Gross written premiums increased $58 million (26%) in the first three months of 2024 compared to the first three months of 2023 due primarily to growth in the financial institutions business. Average renewal rates increased approximately 7% for this group in the first three months of 2024. Reinsurance premiums ceded as a percentage of gross written premiums decreased 1 percentage point in the first three months of 2024 compared to the first three months of 2023 reflecting growth in businesses with higher retentions.

Other specialty The amounts shown as reinsurance premiums ceded represent business assumed by AFG’s internal reinsurance program from the operations that make up AFG’s other Specialty property and casualty insurance sub-segments. Reinsurance premiums assumed decreased $3 million in the first three months of 2024 compared to the first three months of 2023 reflecting a decrease in premiums retained, primarily from businesses in the Specialty casualty sub-segment.

43

AMERICAN FINANCIAL GROUP, INC. 10-Q

Management’s Discussion and Analysis of Financial Condition and Results of Operations — Continued

Combined Ratio

The table below (dollars in millions) details the components of the combined ratio for AFG’s property and casualty insurance segment:

	Three months ended March 31,						Three months ended March 31,
	2024		2023		Change		2024		2023
Property and transportation
Loss and LAE ratio	59.2	%	60.9	%	(1.7	%)
Underwriting expense ratio	29.8	%	30.1	%	(0.3	%)
Combined ratio	89.0	%	91.0	%	(2.0	%)
Underwriting profit							$	56	$	43
Specialty casualty
Loss and LAE ratio	62.5	%	59.2	%	3.3	%
Underwriting expense ratio	27.3	%	28.3	%	(1.0	%)
Combined ratio	89.8	%	87.5	%	2.3	%
Underwriting profit							$	74	$	88
Specialty financial
Loss and LAE ratio	40.2	%	36.0	%	4.2	%
Underwriting expense ratio	46.1	%	50.5	%	(4.4	%)
Combined ratio	86.3	%	86.5	%	(0.2	%)
Underwriting profit							$	33	$	26
Total Specialty
Loss and LAE ratio	58.6	%	57.0	%	1.6	%
Underwriting expense ratio	31.5	%	32.2	%	(0.7	%)
Combined ratio	90.1	%	89.2	%	0.9	%
Underwriting profit							$	154	$	155
Aggregate — including exited lines
Loss and LAE ratio	58.6	%	57.1	%	1.5	%
Underwriting expense ratio	31.5	%	32.2	%	(0.7	%)
Combined ratio	90.1	%	89.3	%	0.8	%
Underwriting profit							$	153	$	154

The Specialty property and casualty insurance operations generated an underwriting profit of $154 million in the first three months of 2024 compared to $155 million in the first three months of 2023, a decrease of $1 million (1%). Higher underwriting profits in the Property and transportation and Specialty financial sub-segments were offset by lower underwriting profit in the Specialty casualty sub-segment and higher losses in the business assumed by AFG’s internal reinsurance program. Overall catastrophe losses were $35 million (2.3 points on the combined ratio), including $1 million in net reinstatement premiums in the first three months of 2024 compared to catastrophe losses $31 million (2.2 points) in the first three months of 2023.

Property and transportation Underwriting profit for this group was $56 million for the first three months of 2024 compared to $43 million for the first three months of 2023, an increase of $13 million (30%). The improved profitability was due primarily to higher year-over-year underwriting profit in the property and inland marine business. Catastrophe losses were $8 million (1.7 points on the combined ratio) in the first three months of 2024 compared to $19 million (4.0 points) in the first three months of 2023.

Specialty casualty Underwriting profit for this group was $74 million for the first three months of 2024 compared to $88 million for the first three months of 2023, a decrease of $14 million (16%). Higher year-over-year underwriting profits in the workers’ compensation businesses were more than offset by lower underwriting profits in the excess and surplus and excess liability businesses and loss activity within a few accounts in the social service business. Catastrophe losses

44

AMERICAN FINANCIAL GROUP, INC. 10-Q

Management’s Discussion and Analysis of Financial Condition and Results of Operations — Continued

were $16 million (2.2 points on the combined ratio), including $1 million in net reinstatement premiums in the first three months of 2024 compared to catastrophe losses of $3 million (0.4 points) in the first three months of 2023.

Specialty financial Underwriting profit for this group was $33 million for the first three months of 2024 compared to $26 million in the first three months of 2023, an increase of $7 million (27%). This increase reflects higher underwriting profits in the financial institutions and fidelity businesses, partially offset by lower profitability in the innovative markets business. Catastrophe losses were $8 million (3.1 points on the combined ratio) compared to $4 million (2.2 points) in the first three months of 2023.

Other specialty This group reported an underwriting loss of $9 million in the first three months of 2024 compared to $2 million in the first three months of 2023, an increase of $7 million (350%), reflecting higher losses in the business assumed by AFG’s internal reinsurance program from the operations that make up AFG’s other Specialty sub-segments in the first three months of 2024 compared to the first three months of 2023. Catastrophe losses were $3 million in the first three months of 2024 compared to $5 million in the first three months of 2023.

Aggregate Aggregate underwriting results for AFG’s property and casualty insurance segment includes adverse prior year reserve development of $1 million in both the first three months of 2024 and the first three months of 2023 related to business outside of the Specialty group that AFG no longer writes.

45

AMERICAN FINANCIAL GROUP, INC. 10-Q

Management’s Discussion and Analysis of Financial Condition and Results of Operations — Continued

Losses and Loss Adjustment Expenses

AFG’s overall loss and LAE ratio was 58.6% for the first three months of 2024 compared to 57.1% for the first three months of 2023, an increase of 1.5 percentage points. The components of AFG’s property and casualty losses and LAE amounts and ratio are detailed below (dollars in millions):

	Three months ended March 31,
	Amount				Ratio				Change in
	2024		2023		2024		2023		Ratio
Property and transportation
Current year, excluding catastrophe losses	$	339	$	307	65.8	%	64.7	%	1.1	%
Prior accident years development	(43)		(37)		(8.3	%)	(7.8	%)	(0.5	%)
Current year catastrophe losses including the impact of net reinstatement premiums	8		19		1.7	%	4.0	%	(2.3	%)
Property and transportation losses and LAE and ratio	$	304	$	289	59.2	%	60.9	%	(1.7	%)
Specialty casualty
Current year, excluding catastrophe losses	$	459	$	441	62.6	%	62.6	%	—	%
Prior accident years development	(17)		(27)		(2.3	%)	(3.8	%)	1.5	%
Current year catastrophe losses including the impact of net reinstatement premiums	15		3		2.2	%	0.4	%	1.8	%
Specialty casualty losses and LAE and ratio	$	457	$	417	62.5	%	59.2	%	3.3	%
Specialty financial
Current year, excluding catastrophe losses	$	84	$	70	34.8	%	35.2	%	(0.4	%)
Prior accident years development	6		(3)		2.3	%	(1.4	%)	3.7	%
Current year catastrophe losses including the impact of net reinstatement premiums	8		4		3.1	%	2.2	%	0.9	%
Specialty financial losses and LAE and ratio	$	98	$	71	40.2	%	36.0	%	4.2	%
Total Specialty
Current year, excluding catastrophe losses	$	923	$	852	59.6	%	59.3	%	0.3	%
Prior accident years development	(51)		(64)		(3.3	%)	(4.5	%)	1.2	%
Current year catastrophe losses including the impact of net reinstatement premiums	34		31		2.3	%	2.2	%	0.1	%
Total Specialty losses and LAE and ratio	$	906	$	819	58.6	%	57.0	%	1.6	%
Aggregate — including exited lines
Current year, excluding catastrophe losses	$	923	$	852	59.6	%	59.3	%	0.3	%
Prior accident years development	(50)		(63)		(3.2	%)	(4.4	%)	1.2	%
Current year catastrophe losses including the impact of net reinstatement premiums	34		31		2.2	%	2.2	%	—	%
Aggregate losses and LAE and ratio	$	907	$	820	58.6	%	57.1	%	1.5	%

Current accident year losses and LAE, excluding catastrophe losses

The current accident year loss and LAE ratio, excluding catastrophe losses, for AFG’s Specialty property and casualty insurance operations was 59.6% for the first three months of 2024 compared to 59.3% for the first three months of 2023, an increase of 0.3 percentage points.

Property and transportation   The 1.1 percentage point increase in the loss and LAE ratio for the current year, excluding catastrophe losses, reflects growth in the crop business, which has a higher loss and LAE ratio than some of the other businesses in the Property and transportation sub-segment.

Specialty casualty   The loss and LAE ratio for the current year, excluding catastrophe losses in the first three months of 2024 is comparable to the 2023 period, reflecting lower claim frequency in the executive liability business offset by higher claim severity in certain excess and surplus businesses and liability coverages.

46

AMERICAN FINANCIAL GROUP, INC. 10-Q

Management’s Discussion and Analysis of Financial Condition and Results of Operations — Continued

Specialty financial   The 0.4 percentage point decrease in the loss and LAE ratio for the current year, excluding catastrophe losses, reflects growth in the financial institutions business, which has a lower loss and LAE ratio than some of the other businesses in the Specialty financial sub-segment.

Net prior year reserve development

AFG’s Specialty property and casualty insurance operations recorded net favorable reserve development related to prior accident years of $51 million in the first three months of 2024 compared to $64 million in the first three months of 2023, a decrease of $13 million (20%).

Property and transportation Net favorable reserve development of $43 million in the first three months of 2024 reflects lower than anticipated losses in the crop business and lower than expected claim severity in the property and inland marine business. Net favorable reserve development of $37 million in the first three months of 2023 reflects lower than anticipated losses in the crop business, lower than expected claim frequency and severity in the trucking business and lower than anticipated claim frequency in the property and inland marine business.

Specialty casualty Net favorable reserve development of $17 million in the first three months of 2024 reflects lower than anticipated claim severity in the workers’ compensation businesses and lower than expected claim frequency and severity in the executive liability business, partially offset by higher than anticipated claim severity in the excess liability businesses and higher than expected claim frequency and severity in the social service business. Net favorable reserve development of $27 million in the first three months of 2023 reflects lower than anticipated claim severity in the workers’ compensation businesses and lower than expected claim frequency in the executive liability, excess and surplus and environmental businesses, partially offset by higher than anticipated claim severity in the public sector and excess liability businesses.

Specialty financial Net adverse reserve development of $6 million in the first three months of 2024 reflects higher than anticipated claim severity in the innovative markets business, partially offset by lower than anticipated claim frequency in the fidelity business and lower than expected claim frequency and severity in the financial institutions business. Net favorable reserve development of $3 million in the first three months of 2023 reflects lower than anticipated claim frequency in the surety and trade credit businesses.

Other specialty In addition to the development discussed above, total Specialty prior year reserve development includes net adverse reserve development of $3 million in both the first three months of 2024 and in the first three months of 2023 associated with AFG’s internal reinsurance program, partially offset by the amortization of the deferred gain on the retroactive reinsurance transaction entered into in connection with the sale of a business in 1998.

Aggregate Aggregate net prior accident years reserve development for AFG’s property and casualty insurance segment includes net adverse reserve development of $1 million in both the first three months of 2024 and the first three months of 2023 related to business outside of the Specialty group that AFG no longer writes.

Catastrophe losses

AFG generally seeks to reduce its exposure to catastrophes (whether resulting from climate change or otherwise) through individual risk selection, including minimizing coastal and known fault-line exposures, and the purchase of reinsurance. Based on data available at December 31, 2023, AFG’s exposure to a catastrophic earthquake or windstorm that industry models indicate should statistically occur once in every 100, 250 or 500 years as a percentage of AFG’s Shareholders’ Equity is shown below:

	Approximate impact of modeled loss
Industry Model	on AFG’s Shareholders’ Equity
100-year event	2%
250-year event	2%
500-year event	2%

AFG maintains comprehensive property catastrophe reinsurance coverage for its property and casualty insurance operations, including a $70 million per occurrence net retention, for losses up to $125 million in the vast majority of circumstances. In certain unlikely events, AFG’s ultimate loss under this coverage could be as high as $73 million for a single occurrence. AFG further maintains supplemental fully collateralized reinsurance coverage up to 94% of $323 million for catastrophe losses in excess of $127 million of traditional catastrophe reinsurance through a catastrophe bond.

47

AMERICAN FINANCIAL GROUP, INC. 10-Q

Management’s Discussion and Analysis of Financial Condition and Results of Operations — Continued

Catastrophe losses of $34 million in the first three months of 2024 (before $1 million in net reinstatement premiums) resulted from winter and convective storms in multiple regions of the United States. Catastrophe losses of $31 million in the first three months of 2023 resulted primarily from February and March storms across much of the United States.

Commissions and Other Underwriting Expenses

AFG’s property and casualty commissions and other underwriting expenses (“U/W Exp”) were $486 million in the first three months of 2024 compared to $463 million for the first three months of 2023, an increase of $23 million (5%). AFG’s underwriting expense ratio, calculated as commissions and other underwriting expenses divided by net premiums earned, was 31.5% for the first three months of 2024 compared to 32.2% for the first three months of 2023, a decrease of 0.7 percentage points. Detail of AFG’s property and casualty commissions and other underwriting expenses and underwriting expense ratios is shown below (dollars in millions):

	Three months ended March 31,
	2024				2023				Change in
	U/W Exp		% of NEP		U/W Exp		% of NEP		% of NEP
Property and transportation	$	153	29.8	%	$	143	30.1	%	(0.3	%)
Specialty casualty	199		27.3	%	199		28.3	%	(1.0	%)
Specialty financial	112		46.1	%	99		50.5	%	(4.4	%)
Other specialty	22		37.7	%	22		34.5	%	3.2	%
	$	486	31.5	%	$	463	32.2	%	(0.7	%)

Property and transportation   Commissions and other underwriting expenses as a percentage of net earned premiums decreased 0.3 percentage points in the first three months of 2024 compared to the first three months of 2023 reflecting the impact of higher earned premiums on the ratio, including in the crop business that has a lower commissions and other underwriting expense ratio compared to some of the other businesses in the Property and transportation sub-segment.

Specialty casualty   Commissions and other underwriting expenses as a percentage of net earned premiums decreased 1.0 percentage points in the first three months of 2024 compared to the first three months of 2023 reflecting the impact of higher earned premiums on the ratio.

Specialty financial   Commissions and other underwriting expenses as a percentage of net earned premiums decreased 4.4 percentage points in the first three months of 2024 compared to the first three months of 2023 due primarily to the impact of higher earned premiums on the ratio and lower average commission rates in the financial institutions business resulting from a change in the mix of business.

Property and Casualty Net Investment Income

Net investment income in AFG’s property and casualty insurance operations was $205 million in the first three months of 2024 compared to $207 million in the first three months of 2023, a decrease of $2 million (1%). The average invested assets and overall yield earned on investments held by AFG’s property and casualty insurance operations are provided below (dollars in millions):

	Three months ended March 31,
	2024			2023			Change			% Change
Net investment income:
Net investment income, excluding alternative investments	$	149		$	129		$	20		16	%
Alternative investments	56			78			(22)			(28	%)
Total net investment income	$	205		$	207		$	(2)		(1	%)
Average invested assets (at amortized cost)	$	15,331		$	14,350		$	981		7	%
Yield (net investment income as a % of average invested assets)	5.35		%	5.77		%	(0.42		%)
Tax equivalent yield (*)	5.42		%	5.83		%	(0.41		%)

(*)Adjusts the yield on equity securities and tax-exempt bonds to the fully taxable equivalent yield.

48

AMERICAN FINANCIAL GROUP, INC. 10-Q

Management’s Discussion and Analysis of Financial Condition and Results of Operations — Continued

The decrease in the property and casualty insurance segment’s net investment income for the first three months of 2024 compared to the first three months of 2023 reflects lower returns on AFG’s alternative investments portfolio (partnerships and similar investments and AFG-managed CLOs), partially offset by the impact of higher balances of invested assets and higher returns on fixed maturity investments. The property and casualty insurance segment’s overall yield on investments (net investment income as a percentage of average invested assets) was 5.35% for the first three months of 2024 compared to 5.77% for the first three months of 2023, a decrease of 0.42 percentage points reflecting lower returns on alternative investments. The annualized return earned on alternative investments was 9.0% in the first three months of 2024 compared to 14.2% in the comparable prior year period.

Property and Casualty Other Income and Expenses, Net

Other income and expenses, net for AFG’s property and casualty insurance operations was a net expense of $18 million for the first three months of 2024 compared to $11 million for the first three months of 2023, an increase of $7 million (64%). The table below details the items included in other income and expenses, net for AFG’s property and casualty insurance operations (in millions):

	Three months ended March 31,
	2024		2023
Other income	$	2	$	5
Other expenses:
Amortization of intangibles	5		3
Interest expense on funds withheld	12		10
Other	3		3
Total other expenses	20		16
Other income and expenses, net	$	(18)	$	(11)

The decrease in other income in the first three months of 2024 compared to the first three months of 2023 is due primarily to the impact of death benefits received on a company-owned life insurance policy in the first three months of 2023. The higher amortization of intangibles in the first three months of 2024 compared to the first three months of 2023 reflects the acquisition of CRS in July 2023.

Holding Company, Other and Unallocated — Results of Operations

AFG’s net GAAP pretax loss outside of its property and casualty insurance segment (excluding realized gains and losses) totaled $50 million in the first three months of 2024 compared to $40 million in the first three months of 2023, an increase of $10 million (25%). AFG’s net core pretax loss outside of its property and casualty insurance segment (excluding realized gains and losses) totaled $50 million in the first three months of 2024 compared to $42 million in the first three months of 2023, an increase of $8 million (19%).

49

AMERICAN FINANCIAL GROUP, INC. 10-Q

Management’s Discussion and Analysis of Financial Condition and Results of Operations — Continued

The following table details AFG’s GAAP and core loss before income taxes from operations outside of its property and casualty insurance segment for the three months ended March 31, 2024 and 2023 (dollars in millions):

	Three months ended March 31,
	2024		2023		% Change
Revenues:
Net investment income	$	7	$	11	(36	%)
Other income — P&C fees	36		24		50	%
Other income	4		7		(43	%)
Total revenues	47		42		12	%
Costs and Expenses:
Property and casualty insurance — loss adjustment and underwriting expenses	22		10		120	%
Other expense — expenses associated with P&C fees	14		14		—	%
Other expenses (*)	42		41		2	%
Costs and expenses, excluding interest charges on borrowed money	78		65		20	%
Loss before income taxes, excluding realized gains and losses and interest charges on borrowed money	(31)		(23)		35	%
Interest charges on borrowed money	19		19		—	%
Core loss before income taxes, excluding realized gains and losses	(50)		(42)		19	%
Pretax non-core gain on retirement of debt	—		2		(100	%)
GAAP loss before income taxes, excluding realized gains and losses	$	(50)	$	(40)	25	%

(*)Excludes a pretax non-core gain on retirement of debt of $2 million in the first three months of 2023.

Holding Company and Other — Net Investment Income

AFG recorded net investment income on investments held outside of its property and casualty insurance segment of $7 million in the first three months of 2024 compared to $11 million in the first three months of 2023, a decrease of $4 million (36%) reflecting the impact of lower average investment balances.

Holding Company and Other — P&C Fees and Related Expenses

Summit, a workers’ compensation insurance subsidiary, collects fees from a small group of unaffiliated insurers for providing underwriting, policy administration and claims services. In addition, certain of AFG’s property and casualty insurance businesses collect fees from customers for ancillary services such as workplace safety programs and premium financing. In the first three months of 2024, AFG collected $25 million in fees for these services compared to $24 million in the first three months of 2023. Management views this fee income, net of the $14 million in both the first three months of 2024 and the first three months of 2023 in expenses incurred to generate such fees, as a reduction in the cost of underwriting its property and casualty insurance policies. In addition, AFG’s property and casualty insurance businesses earned $11 million in fees as compensation for providing services related to the administration of crop insurance business generated by CRS for its former owner prior to the acquisition date during the first three months of 2024. The expenses related to providing such services are embedded in property and casualty underwriting expenses. Consistent with internal management reporting, these fees and the related expenses are netted and recorded as a reduction of commissions and other underwriting expenses in AFG’s segmented results.

Holding Company and Other — Other Income

Other income in the table above includes $3 million in the first three months of 2024 and $4 million in the first three months of 2023 in management fees paid to AFG by the AFG-managed CLOs (AFG’s consolidated managed investment entities). The management fees are eliminated in consolidation — see the other income line in the Consolidate MIEs column under “Results of Operations — Segmented Statement of Earnings.” Excluding amounts eliminated in consolidation, AFG recorded other income outside of its property and casualty insurance segment of $1 million in the first three months of 2024 and $3 million the first three months of 2023, a decrease of $2 million (67%).

Holding Company and Other — Other Expenses

Excluding the non-core gain on retirement of debt in the first three months of 2023 discussed below, AFG’s holding companies and other operations outside of its property and casualty insurance segment recorded other expenses of $42 million in the first three months of 2024 compared to $41 million in the first three months of 2023, an increase of $1 million (2%). Other expenses for the 2024 quarter includes a $4 million charge to increase liabilities related to AFG’s former railroad and manufacturing operations.

50

AMERICAN FINANCIAL GROUP, INC. 10-Q

Management’s Discussion and Analysis of Financial Condition and Results of Operations — Continued

Holding Company and Other — Interest Charges on Borrowed Money

AFG’s holding companies and other operations outside of its property and casualty insurance segment recorded interest expense of $19 million in both the first three months of 2024 and the first three months of 2023.

Holding Company and Other — Gain on Retirement of Debt

During the first quarter of 2023, AFG repurchased $18 million principal amount of its senior notes, which resulted in a $2 million pretax non-core gain.

Realized Gains (Losses) on Securities

AFG’s realized gains (losses) on securities were net gains of $14 million in the first three months of 2024 compared to net losses of $46 million in the first three months of 2023, a change of $60 million (130%). Realized gains (losses) on securities consisted of the following (in millions):

	Three months ended March 31,
	2024		2023
Realized gains (losses) before impairment allowances:
Disposals	$	(3)	$	(24)
Change in the fair value of equity securities	20		(18)
Change in the fair value of derivatives	(1)		1
	16		(41)
Change in allowance for impairments on securities	(2)		(5)
Realized gains (losses) on securities	$	14	$	(46)

The $24 million net realized loss from disposals in the first three months of 2023 includes losses of $14 million from the sale of investments in banks and $4 million from the sale of municipal bonds.

The $20 million net realized gain from the change in the fair value of equity securities in the first three months of 2024 includes gains of $11 million on investments in banks and financing companies and $4 million on investments in natural gas companies. The $18 million net realized loss from the change in the fair value of equity securities in the first three months of 2023 includes losses of $10 million on investments in healthcare companies, $6 million on investments in banks and $6 million on investments in energy companies, partially offset by gains of $4 million on investments in retail companies and $2 million on investments in media companies.

Consolidated Income Taxes

AFG’s consolidated provision for income taxes was $62 million for the first three months of 2024 compared to $52 million for the first three months of 2023, an increase of $10 million (19%). See Note K — “Income Taxes” to the financial statements for an analysis of items affecting AFG’s effective tax rate.

ACCOUNTING STANDARDS TO BE ADOPTED

In November 2023, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update No. 2023-07 (“ASU 2023-07”), Improvements to Reportable Segment Disclosures. ASU 2023-07 will require enhanced disclosures about significant segment expenses and a description of the composition of other segment expenses by business segment. ASU 2023-07 also requires disclosure of the title and position of the chief operating decision maker (“CODM”) and an explanation of how the CODM uses the reported measures 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 interim periods within fiscal years beginning after December 15, 2024, with early adoption permitted, and are to be applied on a retrospective basis. As of March 31, 2024, AFG has not adopted ASU 2023-07. Management is evaluating the impact of the standard to the segment reporting disclosures. Since ASU 2023-07 only requires additional disclosure, the adoption of this guidance will not have an impact on AFG’s results of operations or financial condition.

In December 2023, the FASB issued ASU No. 2023-09 (“ASU 2023-09”), Improvements to Income Tax Disclosures. ASU 2023-09 is intended to improve income tax disclosures by requiring (i) consistent categories and greater disaggregation of information in the rate reconciliation presented in both dollar and percentage terms; (ii) the disaggregation of income taxes

51

AMERICAN FINANCIAL GROUP, INC. 10-Q

Management’s Discussion and Analysis of Financial Condition and Results of Operations — Continued

paid (net of refunds received), income (loss) before income taxes and income taxes by jurisdiction (federal, state and foreign taxes); and (iii) further disaggregation of income taxes paid by any individual jurisdiction equal to or exceeding five percent of total income taxes paid. ASU 2023-09 is effective for fiscal years beginning after December 15, 2024, with early adoption permitted, and is required to be applied prospectively with the option of retrospective application. As of March 31, 2024, AFG has not adopted ASU 2023-09. Management is evaluating the impact of the standard to the income tax disclosures. Since ASU 2023-09 only requires additional disclosure, the adoption of this guidance will not have an impact on AFG’s results of operations or financial condition.

ITEM 3. Quantitative and Qualitative Disclosure about Market Risk

As of March 31, 2024, there were no material changes to the information provided in Item 7A — Quantitative and Qualitative Disclosures about Market Risk of AFG’s 2023 Form 10-K.

Consistent with the discussion in Item 2 — Management’s Discussion and Analysis — “Investments,” the following table demonstrates the sensitivity of the fair value of AFG’s fixed maturity portfolio to reasonably likely changes in interest rates by illustrating the estimated effect on AFG’s fixed maturity portfolio that an immediate increase of 100 basis points in the interest rate yield curve would have at March 31, 2024 (based on the duration of the portfolio, dollars in millions). Effects of increases or decreases from the 100 basis points illustrated would be approximately proportional.

Fair value of fixed maturity portfolio	$	10,428
Percentage impact on fair value of 100 bps increase in interest rates	(3.0		%)
Pretax impact on fair value of fixed maturity portfolio	$	(313)

ITEM 4. Controls and Procedures

AFG’s management, with participation of its Co-Chief Executive Officers and its Chief Financial Officer, has evaluated AFG’s disclosure controls and procedures (as defined in Exchange Act Rule 13a-15) as of the end of the period covered by this report. Based on that evaluation, AFG’s Co-CEOs and CFO concluded that the controls and procedures are effective. There have been no changes in AFG’s internal control over financial reporting during the first fiscal quarter of 2024 that materially affected, or are reasonably likely to materially affect, AFG’s internal control over financial reporting.

In the ordinary course of business, AFG and its subsidiaries routinely enhance their information systems by either upgrading current systems or implementing new systems. There have been no changes in AFG’s business processes and procedures during the first fiscal quarter of 2024 that have materially affected, or are reasonably likely to materially affect, AFG’s internal control over financial reporting.

52

AMERICAN FINANCIAL GROUP, INC. 10-Q

PART II

OTHER INFORMATION

ITEM 2. Unregistered Sales of Equity Securities and Use of Proceeds

Issuer Purchases of Equity Securities   AFG did not repurchase any shares of its Common Stock during the first three months of 2024. As of March 31, 2024, there are 5,729,010 remaining shares that may be repurchased until December 31, 2025 under the Plans authorized by AFG’s Board of Directors in October 2020 and May 2021.

AFG acquired 2,155 shares of its Common Stock (at an average of $120.73 per share) in January 2024, 45,585 shares (at $126.63 per share) in February 2024 and 130 shares (at $132.23 per share) in March 2024 in connection with its stock incentive plans.

ITEM 5. Other Information

During the three months ended March 31, 2024, none of the Company’s directors or officers adopted, terminated or modified a “Rule 10b5-1 trading arrangement” or “non-Rule 10b5-1 trading arrangement,” as those terms are defined in Regulation S-K, Item 408.

53

AMERICAN FINANCIAL GROUP, INC. 10-Q

ITEM 6. Exhibits

Number	Exhibit Description
31(a)	Certification of Co-Chief Executive Officer pursuant to section 302(a) of the Sarbanes-Oxley Act of 2002.
31(b)	Certification of Co-Chief Executive Officer pursuant to section 302(a) of the Sarbanes-Oxley Act of 2002.
31(c)	Certification of Chief Financial Officer pursuant to section 302(a) of the Sarbanes-Oxley Act of 2002.
32	Certification of Co-Chief Executive Officers and Chief Financial Officer pursuant to section 906 of the Sarbanes-Oxley Act of 2002.
101.INS	XBRL Instance Document - the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document.
101.SCH	Inline XBRL Taxonomy Extension Schema Document.
101.CAL	Inline XBRL Taxonomy Extension Calculation Linkbase Document.
101.DEF	Inline XBRL Taxonomy Extension Definition Linkbase Document.
101.LAB	Inline XBRL Taxonomy Extension Label Linkbase Document.
101.PRE	Inline XBRL Taxonomy Extension Presentation Linkbase Document.
104	Cover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101).

Signature

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

	American Financial Group, Inc.
May 3, 2024	By:	/s/ Brian S. Hertzman
		Brian S. Hertzman
		Senior Vice President and Chief Financial Officer

54

EX-31.A

Exhibit 31(a)

AMERICAN FINANCIAL GROUP, INC. 10-Q

SARBANES-OXLEY SECTION 302(a) CERTIFICATIONS

I, Carl H. Lindner III, certify that:

1.I have reviewed this quarterly report on Form 10-Q of American Financial Group, Inc.;

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.The registrant’s other certifying officers and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a)Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b)Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c)Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d)Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5.The registrant’s other certifying officers and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of registrant’s board of directors (or persons performing the equivalent functions):

a)All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b)Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

May 3, 2024	By:	/s/ Carl H. Lindner III
		Carl H. Lindner III
		Co-Chief Executive Officer

E-1

EX-31.B

Exhibit 31(b)

AMERICAN FINANCIAL GROUP, INC. 10-Q

SARBANES-OXLEY SECTION 302(a) CERTIFICATIONS

I, S. Craig Lindner, certify that:

1.I have reviewed this quarterly report on Form 10-Q of American Financial Group, Inc.;

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.The registrant’s other certifying officers and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a)Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b)Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c)Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d)Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5.The registrant’s other certifying officers and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of registrant’s board of directors (or persons performing the equivalent functions):

a)All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b)Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

May 3, 2024	By:	/s/ S. Craig Lindner
		S. Craig Lindner
		Co-Chief Executive Officer

E-2

EX-31.C

Exhibit 31(c)

AMERICAN FINANCIAL GROUP, INC. 10-Q

SARBANES-OXLEY SECTION 302(a) CERTIFICATIONS

I, Brian S. Hertzman, certify that:

1.I have reviewed this quarterly report on Form 10-Q of American Financial Group, Inc.;

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.The registrant’s other certifying officers and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a)Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b)Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c)Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d)Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5.The registrant’s other certifying officers and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of registrant’s board of directors (or persons performing the equivalent functions):

a)All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b)Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

May 3, 2024	By:	/s/ Brian S. Hertzman
		Brian S. Hertzman
		Senior Vice President and Chief Financial Officer

E-3

EX-32

Exhibit 32

AMERICAN FINANCIAL GROUP, INC. 10-Q

CERTIFICATION OF CHIEF EXECUTIVE OFFICERS AND CHIEF FINANCIAL OFFICER

PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the filing with the Securities and Exchange Commission of the Quarterly Report of American Financial Group, Inc. (the “Company”) on Form 10-Q for the period ended March 31, 2024 (the “Report”), the undersigned officers of the Company, certify, pursuant to section 906 of the Sarbanes-Oxley Act of 2002, that to the best of their knowledge:

(1)The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Act of 1934; and

(2)The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

May 3, 2024	By:	/s/ S. Craig Lindner
Date		S. Craig Lindner
		Co-Chief Executive Officer
May 3, 2024	By:	/s/ Carl H. Lindner III
Date		Carl H. Lindner III
		Co-Chief Executive Officer
May 3, 2024	By:	/s/ Brian S. Hertzman
Date		Brian S. Hertzman
		Senior Vice President and Chief Financial Officer

A signed original of this written statement will be retained by the Registrant and

furnished to the Securities and Exchange Commission or its staff upon request.

E-4

XML

Cover - shares	3 Months Ended
	Mar. 31, 2024	May 01, 2024
Entity Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2024
Document Transition Report	false
Entity File Number	1-13653
Entity Registrant Name	AMERICAN FINANCIAL GROUP, INC.
Entity Incorporation, State or Country Code	OH
Entity Tax Identification Number	31-1544320
Entity Address, Address Line One	301 East Fourth Street
Entity Address, City or Town	Cincinnati
Entity Address, State or Province	OH
Entity Address, Postal Zip Code	45202
City Area Code	513
Local Phone Number	579-2121
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		83,866,972
Entity Central Index Key	0001042046
Amendment Flag	false
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	Q1
Current Fiscal Year End Date	--12-31
Common Stock
Entity Information [Line Items]
Title of 12(b) Security	Common Stock
Trading Symbol	AFG
Security Exchange Name	NYSE
5.875% Subordinated Debentures due March 2059
Entity Information [Line Items]
Title of 12(b) Security	5.875% Subordinated Debentures due March 30, 2059
Trading Symbol	AFGB
Security Exchange Name	NYSE
5.625% Subordinated Debentures due June 2060
Entity Information [Line Items]
Title of 12(b) Security	5.625% Subordinated Debentures due June 1, 2060
Trading Symbol	AFGD
Security Exchange Name	NYSE
5.125% Subordinated Debentures due December 2059
Entity Information [Line Items]
Title of 12(b) Security	5.125% Subordinated Debentures due December 15, 2059
Trading Symbol	AFGC
Security Exchange Name	NYSE
4.50% Subordinated Debentures due September 2060
Entity Information [Line Items]
Title of 12(b) Security	4.50% Subordinated Debentures due September 15, 2060
Trading Symbol	AFGE
Security Exchange Name	NYSE

XML

Consolidated Balance Sheet (Unaudited) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023	Dec. 31, 2022
Assets:
Cash and cash equivalents	$ 1,087	$ 1,225
Investments:
Fixed maturities, available for sale at fair value (amortized cost — $10,734 and $10,752; allowance for expected credit losses of $11 and $12)	10,371	10,377
Fixed maturities, trading at fair value	57	57
Equity securities, at fair value	1,040	1,018
Investments accounted for using the equity method	1,848	1,814
Mortgage loans	722	643
Real estate and other investments	129	129
Total cash and investments	15,254	15,263
Recoverables from reinsurers	4,510	4,477
Prepaid reinsurance premiums	1,078	961
Agents’ balances and premiums receivable	1,606	1,471
Deferred policy acquisition costs	309	309
Assets of managed investment entities	4,669	4,484
Other receivables	958	1,171
Other assets	1,312	1,346
Goodwill	305	305
Total assets	30,001	29,787
Liabilities and Equity:
Unearned premiums	3,650	3,451
Payable to reinsurers	1,078	1,186
Liabilities of managed investment entities	4,468	4,307
Long-term debt	1,475	1,475
Other liabilities	2,040	2,023
Total liabilities	25,761	25,529
Shareholders’ equity:
Common Stock, no par value — 200,000,000 shares authorized — 83,857,354 and 83,635,807 shares outstanding	84	84
Capital surplus	1,382	1,372
Retained earnings	3,089	3,121
Accumulated other comprehensive income (loss), net of tax	(315)	(319)
Total shareholders’ equity	4,240	4,258
Total liabilities and shareholders’ equity	30,001	29,787
Property and casualty insurance
Liabilities and Equity:
Unpaid losses and loss adjustment expenses	$ 13,050	$ 13,087	$ 11,761	$ 11,974

XML

Consolidated Balance Sheet (Unaudited) (Parenthetical) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Statement of Financial Position [Abstract]
Fixed maturities, available for sale, amortized cost	$ 10,734	$ 10,752
Fixed maturities, available for sale, allowance for expected credit losses	$ 11	$ 12
Common Stock, par value (USD per share)	$ 0	$ 0
Common Stock, shares authorized (shares)	200,000,000	200,000,000
Common Stock, shares outstanding (shares)	83,857,354	83,635,807

XML

Consolidated Statement of Earnings (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Revenues:
Property and casualty insurance net earned premiums	$ 1,546	$ 1,437
Net investment income	198	217
Realized gains (losses) on securities	14	(46)
Income of managed investment entities:
Investment income	99	104
Gain (loss) on change in fair value of assets/liabilities	10	(4)
Other income	39	32
Total revenues	1,906	1,740
Property and casualty insurance:
Commissions and other underwriting expenses	503	473
Interest charges on borrowed money	19	19
Expenses of managed investment entities	92	95
Other expenses	76	69
Total costs and expenses	1,602	1,476
Earnings before income taxes	304	264
Provision for income taxes	62	52
Net Earnings	$ 242	$ 212
Earnings per Common Share:
Total basic earnings (USD per share)	$ 2.89	$ 2.49
Total diluted earnings (USD per share)	$ 2.89	$ 2.49
Average number of Common Shares:
Basic (shares)	83.7	85.2
Diluted (shares)	83.8	85.4
Property and casualty insurance
Property and casualty insurance:
Losses and loss adjustment expenses	$ 912	$ 820

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Consolidated Statement of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Statement of Comprehensive Income [Abstract]
Net earnings	$ 242	$ 212
Net unrealized gains (losses) on securities:
Unrealized holding gains (losses) on securities arising during the period	5	61
Reclassification adjustment for realized (gains) losses included in net earnings	4	23
Total net unrealized gains (losses) on securities	9	84
Net unrealized gains (losses) on cash flow hedges:
Unrealized holding gains (losses) on cash flow hedges arising during the period	(10)	4
Reclassification adjustment for investment income included in net earnings	5	4
Total net unrealized gains (losses) on cash flow hedges	(5)	8
Foreign currency translation adjustments	0	0
Other comprehensive income, net of tax	4	92
Comprehensive income	$ 246	$ 304

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Consolidated Statement of Changes in Equity (Unaudited) - USD ($) $ in Millions	Total	Total	Common Shares	Common Stock and Capital Surplus	Retained Earnings	Accumulated Other Comp. Income (Loss)
Beginning Balance (shares) at Dec. 31, 2022			85,204,006
Beginning Balance at Dec. 31, 2022		$ 4,052		$ 1,453	$ 3,142	$ (543)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	$ 212	212			212
Other comprehensive income		92				92
Dividends		(394)			(394)
Shares issued:
Exercise of stock options (shares)			64,339
Exercise of stock options		3		3
Restricted stock awards (shares)			147,169
Other benefit plans (shares)			12,299
Other benefit plans		2		2
Dividend reinvestment plan (shares)			10,911
Dividend reinvestment plan		1		1
Stock-based compensation expense		5		5
Shares acquired and retired (shares)			(199,762)
Shares acquired and retired		(24)		(4)	(20)
Shares exchanged — benefit plans (shares)			(55,382)
Shares exchanged — benefit plans		(8)		(1)	(7)
Forfeitures of restricted stock (shares)			(11,922)
Ending Balance (shares) at Mar. 31, 2023			85,171,658
Ending Balance at Mar. 31, 2023		3,941		1,459	2,933	(451)
Beginning Balance (shares) at Dec. 31, 2023	83,635,807		83,635,807
Beginning Balance at Dec. 31, 2023		4,258		1,456	3,121	(319)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	$ 242	242			242
Other comprehensive income		4				4
Dividends		(269)			(269)
Shares issued:
Exercise of stock options (shares)			92,851
Exercise of stock options		4		4
Restricted stock awards (shares)			157,681
Other benefit plans (shares)			15,804
Other benefit plans		2		2
Dividend reinvestment plan (shares)			8,253
Dividend reinvestment plan		1		1
Stock-based compensation expense		4		4
Shares acquired and retired (shares)			0
Shares acquired and retired		0		0	0
Shares exchanged — benefit plans (shares)			(47,870)
Shares exchanged — benefit plans		(6)		(1)	(5)
Forfeitures of restricted stock (shares)			(5,172)
Ending Balance (shares) at Mar. 31, 2024	83,857,354		83,857,354
Ending Balance at Mar. 31, 2024		$ 4,240		$ 1,466	$ 3,089	$ (315)

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Consolidated Statement of Changes in Equity (Unaudited) (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Statement of Stockholders' Equity [Abstract]
Dividends (USD per share)	$ 3.21	$ 4.63

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Consolidated Statement of Cash Flows (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Operating Activities:
Net earnings	$ 242	$ 212
Adjustments:
Depreciation and amortization	20	20
Realized (gains) losses on investing activities	(14)	45
Net purchases of trading securities	0	(3)
Change in:
Reinsurance and other receivables	(71)	162
Other assets	57	48
Insurance claims and reserves	162	(24)
Payable to reinsurers	(108)	(124)
Other liabilities	(42)	(28)
Managed investment entities’ assets/liabilities	(124)	139
Other operating activities, net	(15)	(44)
Net cash provided by operating activities	107	403
Purchases of:
Fixed maturities	(408)	(575)
Equity securities	(42)	(41)
Mortgage loans	(89)	0
Other investments	(27)	(49)
Real estate, property and equipment	(38)	(13)
Proceeds from:
Maturities and redemptions of fixed maturities	378	381
Repayments of mortgage loans	8	32
Sales of fixed maturities	75	342
Sales of equity securities	56	56
Sales of other investments	5	33
Sales of real estate, property and equipment	0	1
Managed investment entities:
Purchases of investments	(605)	(648)
Proceeds from sales and redemptions of investments	532	554
Net cash provided by (used in) investing activities	(155)	73
Financing Activities:
Reductions of long-term debt	0	(16)
Issuances of Common Stock	6	4
Repurchases of Common Stock	0	(24)
Cash dividends paid on Common Stock	(268)	(393)
Issuances of managed investment entities’ liabilities	635	588
Retirements of managed investment entities’ liabilities	(463)	(650)
Net cash used in financing activities	(90)	(491)
Net Change in Cash and Cash Equivalents	(138)	(15)
Cash and cash equivalents at beginning of period	1,225	872
Cash and cash equivalents at end of period	$ 1,087	$ 857

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Accounting Policies

3 Months Ended

Mar. 31, 2024

Accounting Policies [Abstract]

Accounting Policies

Accounting Policies

Basis of Presentation   The accompanying consolidated financial statements for American Financial Group, Inc. and its subsidiaries (“AFG”) are unaudited; however, management believes that all adjustments (consisting only of normal recurring accruals unless otherwise disclosed herein) necessary for fair presentation have been made. The results of operations for interim periods are not necessarily indicative of results to be expected for the year. The financial statements have been prepared in accordance with the instructions to Form 10-Q and, therefore, do not include all information and footnotes necessary to be in conformity with U.S. generally accepted accounting principles (“GAAP”).

Certain reclassifications have been made to prior periods to conform to the current year’s presentation. All significant intercompany balances and transactions have been eliminated. The results of operations of companies since their formation or acquisition are included in the consolidated financial statements. Events or transactions occurring subsequent to March 31, 2024, and prior to the filing of this Form 10-Q, have been evaluated for potential recognition or disclosure herein.

The preparation of the financial statements requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Changes in circumstances could cause actual results to differ materially from those estimates.

Fair Value Measurements   Accounting standards define fair value as the price that would be received to sell an asset or paid to transfer a liability (an exit price) in an orderly transaction between market participants on the measurement date. The standards establish a hierarchy of valuation techniques based on whether the assumptions that market participants would use in pricing the asset or liability (“inputs”) are observable or unobservable. Observable inputs reflect market data obtained from independent sources, while unobservable inputs reflect AFG’s assumptions about the assumptions market participants would use in pricing the asset or liability. AFG did not have any material nonrecurring fair value measurements in the first three months of 2024.

Investments   Equity securities other than those accounted for under the equity method are reported at fair value with holding gains and losses generally recorded in realized gains (losses) on securities. However, AFG records holding gains and losses on limited partnerships and similar investments that do not qualify for equity method accounting (and are therefore carried at fair value), and certain other securities classified at purchase as “fair value through net investment income” in net investment income.

Fixed maturity securities classified as “available for sale” are reported at fair value with unrealized gains and losses included in accumulated other comprehensive income (“AOCI”) in AFG’s Balance Sheet. Fixed maturity securities classified as “trading” are reported at fair value with changes in unrealized holding gains or losses during the period included in net investment income. Mortgage loans (net of any allowance) are carried primarily at the aggregate unpaid balance.

Realized gains or losses on the disposal of fixed maturity securities are determined on the specific identification basis. Premiums and discounts on fixed maturity securities are amortized using the effective interest method. Mortgage-backed securities (“MBS”) are amortized over a period based on estimated future principal payments, including prepayments. Prepayment assumptions are reviewed periodically and adjusted to reflect actual prepayments and changes in expectations.

Limited partnerships and similar investments are generally accounted for using the equity method of accounting. Under the equity method, AFG records its share of the earnings or losses of the investee based on when it is reported by the investee in its financial statements rather than in the period in which the investee declares a dividend. AFG’s share of the earnings or losses from equity method investments is generally recorded on a quarter lag due to the timing of the receipt of the investee’s financial statements. AFG’s equity in the earnings (losses) of limited partnerships and similar investments is included in net investment income.

Credit Losses on Fixed Maturity Investments   When a decline in the value of an available for sale fixed maturity is considered to be other-than-temporary at the balance sheet date, an allowance for credit losses (impairment), including any write-off of accrued interest, is charged to earnings (included in realized gains (losses) on securities). If management can assert that it does not intend to sell the security and it is not more likely than not that it will have to sell it before recovery of its amortized cost basis (net of allowance), then the impairment is separated into two components: (i) the allowance related to credit losses (recorded in earnings) and (ii) the amount related to all other factors (recorded in other comprehensive income). The credit-related portion is measured by comparing a security’s amortized cost to the present value of its current expected cash flows discounted at its effective yield prior to the charge. The allowance is limited to the difference between a security’s amortized cost basis and its fair value. Subsequent increases or decreases in expected credit losses are recorded immediately in net earnings through realized gains (losses). If management intends to sell an impaired security, or it is more likely than not that it will be required to sell the security before recovery, an impairment is recorded in earnings to reduce the amortized cost (net of allowance) of that security to fair value.

Credit Losses on Financial Instruments Measured at Amortized Cost   Credit-related impairments for financial instruments measured at amortized cost (mortgage loans, premiums receivable and reinsurance recoverables) reflect estimated credit losses expected over the life of an exposure or pool of exposures. The estimate of expected credit losses considers historical information, current information, as well as reasonable and supportable forecasts, including estimates of prepayments. Expected credit losses, and subsequent increases or decreases in such expected losses, are recorded immediately through net earnings as an allowance that is deducted from the amortized cost basis of the financial asset, with the net carrying value of the financial asset presented on the balance sheet at the amount expected to be collected.

Derivatives   Derivatives included in AFG’s Balance Sheet are recorded at fair value. Changes in fair value of derivatives are included in earnings unless the derivatives are designated and qualify as highly effective cash flow hedges. AFG’s derivatives that do not qualify for hedge accounting under GAAP consist primarily of components of certain fixed maturity securities (convertible fixed maturities and interest-only and principal-only MBS) and a total return swap related to its deferred compensation obligations to employees.

To qualify for hedge accounting, at the inception of a derivative contract, AFG formally documents the relationship between the terms of the hedge and the hedged items and its risk management objective. This documentation includes defining how hedge effectiveness is evaluated at the inception date and over the life of the derivative.

Changes in the fair value of derivatives that are designated and qualify as highly effective cash flow hedges are recorded in AOCI and are reclassified into earnings when the variability of the cash flows from the hedged items impacts earnings. When the change in the fair value of a qualifying cash flow hedge is included in earnings, it is included in the same line item in the statement of earnings as the cash flows from the hedged item. AFG uses interest rate swaps that are designated and qualify as highly effective cash flow hedges to mitigate interest rate risk related to certain floating-rate securities.

Goodwill   Goodwill represents the excess of cost of subsidiaries over AFG’s equity in their underlying net assets at the date of acquisition. Goodwill is not amortized, but is subject to an impairment test at least annually. An entity is not required to complete the quantitative annual goodwill impairment test on a reporting unit if the entity elects to perform a qualitative analysis and determines that it is more likely than not that the reporting unit’s fair value exceeds its carrying amount.

Reinsurance   Amounts recoverable from reinsurers are estimated in a manner consistent with the claim liability associated with the reinsured policies. AFG reports as assets (i) the estimated reinsurance recoverable on paid and unpaid losses, including an estimate for losses incurred but not reported, and (ii) amounts paid or due to reinsurers applicable to the unexpired terms of policies in force. Payable to reinsurers includes ceded premiums due to reinsurers, as well as ceded premiums retained by AFG under contracts to fund ceded losses as they become due. AFG also assumes reinsurance from other companies. Earnings on reinsurance assumed is recognized based on information received from ceding companies.

Deferred Policy Acquisition Costs (“DPAC”)   Policy acquisition costs (principally commissions, premium taxes and certain underwriting and policy issuance costs) directly related to the successful acquisition or renewal of an insurance contract are deferred. DPAC is limited based upon recoverability without any consideration for anticipated investment income and is charged against income ratably over the terms of the related policies. A premium deficiency is recognized if the sum of expected claims costs, claims adjustment expenses and unamortized acquisition costs exceed the related unearned premiums. A premium deficiency is first recognized by charging any unamortized acquisition costs to expense to the extent required to eliminate the deficiency. If the premium deficiency is greater than unamortized acquisition costs, a liability is accrued for the excess deficiency and reported with unpaid losses and loss adjustment expenses.

Managed Investment Entities   A company is considered the primary beneficiary of, and therefore must consolidate, a variable interest entity (“VIE”) based primarily on its ability to direct the activities of the VIE that most significantly impact that entity’s economic performance and the obligation to absorb losses of, or receive benefits from, the entity that could potentially be significant to the VIE.

AFG manages, and has investments in, collateralized loan obligations (“CLOs”) that are VIEs (see Note G — “Managed Investment Entities”). AFG has determined that it is the primary beneficiary of these CLOs because (i) its role as asset manager gives it the power to direct the activities that most significantly impact the economic performance of the CLOs and (ii) through its investment in the CLO debt tranches, it has exposure to CLO losses (limited to the amount AFG invested) and the right to receive CLO benefits that could potentially be significant to the CLOs.

Because AFG has no right to use the CLO assets and no obligation to pay the CLO liabilities, the assets and liabilities of the CLOs are shown separately in AFG’s Balance Sheet. AFG has elected the fair value option for reporting on the CLO assets and liabilities to improve the transparency of financial reporting related to the CLOs. The net gain or loss from accounting for the CLO assets and liabilities at fair value is presented separately in AFG’s Statement of Earnings.

The fair values of a CLO’s assets may differ from the separately measured fair values of its liabilities even though the CLO liabilities only have recourse to the CLO assets. AFG has set the carrying value of the CLO liabilities equal to the fair value of the CLO assets (which have more observable fair values) as an alternative to reporting those liabilities at a separately measured fair value. CLO earnings attributable to AFG’s shareholders are measured by the change in the fair value of AFG’s investments in the CLOs and management fees earned.

At March 31, 2024, assets and liabilities of managed investment entities included $164 million in assets and $134 million in liabilities of a temporary warehousing entity that was established to provide AFG the ability to form a new CLO. At closing, all warehoused assets will be transferred to the new CLO and the liabilities will be repaid.

Unpaid Losses and Loss Adjustment Expenses   The liabilities stated for unpaid claims and for expenses of investigation and adjustment of unpaid claims represent management’s best estimate and are based upon (i) the accumulation of case estimates for losses reported prior to the close of the accounting period on direct business written; (ii) estimates received from ceding reinsurers and insurance pools and associations; (iii) estimates of unreported losses (including possible development on known claims) based on past experience; (iv) estimates based on experience of expenses for investigating and adjusting claims; and (v) the current state of the law and coverage litigation. Establishing reserves for asbestos, environmental and other mass tort claims involves considerably more judgment than other types of claims due to, among other things, inconsistent court decisions, an increase in bankruptcy filings as a result of asbestos-related liabilities, novel theories of coverage, and judicial interpretations that often expand theories of recovery and broaden the scope of coverage.

Loss reserve liabilities are subject to the impact of changes in claim amounts and frequency and other factors. Changes in estimates of the liabilities for losses and loss adjustment expenses are reflected in the statement of earnings in the period in which determined. Despite the variability inherent in such estimates, management believes that the liabilities for unpaid losses and loss adjustment expenses are adequate and reasonable.

Debt Issuance Costs   Debt issuance costs related to AFG’s outstanding debt are presented in its Balance Sheet as a direct reduction in the carrying value of long-term debt and are amortized over the life of the related debt using the effective interest method as a component of interest expense. Debt issuance costs related to AFG’s revolving credit facilities are included in other assets in AFG’s Balance Sheet.

Leases   Leases for terms of longer than one year are recognized as assets and liabilities for the rights and obligations created by those leases on the balance sheet based on the present value of contractual cash flows.

At March 31, 2024 AFG has a $204 million lease liability included in other liabilities and a lease right-of-use asset of $181 million included in other assets compared to $198 million and $176 million, respectively, at December 31, 2023.

Premium Recognition   Property and casualty premiums are earned generally over the terms of the policies on a pro rata basis. Unearned premiums represent that portion of premiums written, which is applicable to the unexpired terms of policies in force. On reinsurance assumed from other insurance companies or written through various underwriting organizations, unearned premiums are based on information received from such companies and organizations.

Income Taxes   Deferred income taxes are calculated using the liability method. Under this method, deferred income tax assets and liabilities are determined based on differences between financial reporting and tax bases and are measured using enacted tax rates. A valuation allowance is established to reduce total deferred tax assets to an amount that will more likely than not be realized. The effect of a change in tax rates on deferred tax assets and liabilities is recorded in net earnings in the period that includes the enactment date.

AFG recognizes the tax benefits of uncertain tax positions only when the position is more likely than not to be sustained under examination by the appropriate taxing authority. Interest and penalties on AFG’s reserve for uncertain tax positions are recognized as a component of tax expense.

Stock-Based Compensation   All share-based grants are recognized as compensation expense on a straight-line basis over their vesting periods based on their calculated fair value at the date of grant.

AFG records excess tax benefits or deficiencies for share-based payments through income tax expense in the statement of earnings. In addition, AFG accounts for forfeitures of awards when they occur.

Benefit Plans   AFG provides retirement benefits to qualified employees of participating companies through the AFG 401(k) Retirement and Savings Plan, a defined contribution plan. AFG makes all contributions to the retirement fund portion of the plan and matches a percentage of employee contributions to the savings fund. Company contributions are expensed in the year for which they are declared. AFG and many of its subsidiaries provide health care and life insurance benefits to eligible retirees. AFG also provides postemployment benefits to former or inactive employees (primarily those on disability) who were not deemed retired under other company plans. The projected future cost of providing these benefits is expensed over the period employees earn such benefits.

Earnings Per Share   Although basic earnings per share only considers shares of common stock outstanding during the period, the calculation of diluted earnings per share includes the following adjustments to weighted average common shares related to stock-based compensation plans: first three months of 2024 and 2023 — 0.1 million and 0.2 million.

There were no anti-dilutive potential common shares for the first three months of 2024 or 2023.

Statement of Cash Flows   For cash flow purposes, “investing activities” are defined as making and collecting loans and acquiring and disposing of debt or equity instruments, property and equipment and businesses. “Financing activities” include obtaining resources from owners and providing them with a return on their investments, borrowing money and repaying amounts borrowed. All other activities are considered “operating.” Short-term investments having original maturities of three months or less when purchased are considered to be cash equivalents for purposes of the financial statements.

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Acquisition of Businesses

3 Months Ended

Mar. 31, 2024

Business Combination and Asset Acquisition [Abstract]

Acquisition of Business

Acquisition of Business

Crop Risk Services   On July 3, 2023, AFG completed the acquisition of Crop Risk Services (“CRS”) from American International Group (“AIG”). CRS is a primary crop insurance general agent based in Decatur, Illinois, that generated crop year 2022 gross written premiums of approximately $1.2 billion and was the seventh largest provider of multi-peril crop insurance in the United States based on 2022 premiums. At closing, AFG paid AIG $234 million (based on $24 million in net tangible assets) using cash on hand.

Expenses related to the acquisition were $3 million and were expensed as incurred. The purchase price was allocated to the acquired assets and liabilities of CRS based on management’s best estimate of fair value as of the acquisition date. The purchase price allocation is shown below (in millions).

	July 3, 2023
Cash paid at purchase	$	234
Tangible assets acquired:
Cash and cash equivalents	$	26
Agents’ balances and premiums receivable	164
Other assets	3
Total tangible assets acquired	$	193
Liabilities acquired:
Other liabilities	$	169
Total liabilities acquired	169
Net tangible assets acquired, at fair value	24
Excess purchase price over net tangible assets acquired	$	210
Allocation of excess purchase price:
Intangible assets acquired (*)	$	124
Deferred tax asset (*)	1
Goodwill	85
	$	210

(*)Included in Other assets in AFG’s Balance Sheet.

In the purchase price allocation, $124 million of the purchase price was recognized as finite lived intangible assets primarily related to existing agency relationships, which will be amortized over an average estimated life of approximately 14 years. The acquisition resulted in the recognition of $85 million in GAAP basis goodwill based on the excess of the purchase price over the fair value of the net assets acquired. The acquisition resulted in $79 million of tax basis goodwill which is deductible for tax purposes.

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Segments of Operations

3 Months Ended

Mar. 31, 2024

Segment Reporting [Abstract]

Segments of Operations

Segments of Operations

AFG manages its business as two segments: Property and casualty insurance and Other, which includes holding company costs and operations attributable to the noncontrolling interests of the managed investment entities.

AFG reports its property and casualty insurance business in the following Specialty sub-segments: (i) Property and transportation, which includes physical damage and liability coverage for buses and trucks and other specialty transportation niches, inland and ocean marine, agricultural-related products and other commercial property coverages, (ii) Specialty casualty, which includes primarily excess and surplus, executive and professional liability, general liability, umbrella and excess liability, specialty coverages in targeted markets, customized programs for small to mid-sized businesses and workers’ compensation insurance, and (iii) Specialty financial, which includes risk management insurance programs for lending and leasing institutions (including equipment leasing and collateral and lender-placed mortgage property insurance), fidelity and surety products and trade credit insurance. Premiums and underwriting profit included under Other specialty represent business assumed by AFG’s internal reinsurance program from the operations that make up AFG’s other Specialty sub-segments and amortization of a deferred gain on a retroactive reinsurance transaction related to the sale of a business. AFG’s reportable segments and their components were determined based primarily upon similar economic characteristics, products and services.

The following tables (in millions) show AFG’s revenues and earnings before income taxes by segment and sub-segment.

	Three months ended March 31,
	2024		2023
Revenues
Property and casualty insurance:
Premiums earned:
Specialty
Property and transportation	$	513	$	475
Specialty casualty	730		704
Specialty financial	243		196
Other specialty	60		62
Total premiums earned	1,546		1,437
Net investment income	205		207
Other income	2		5
Total property and casualty insurance	1,753		1,649
Other	139		137
Total revenues before realized gains (losses)	1,892		1,786
Realized gains (losses) on securities	14		(46)
Total revenues	$	1,906	$	1,740
Earnings Before Income Taxes
Property and casualty insurance:
Underwriting:
Specialty
Property and transportation	$	56	$	43
Specialty casualty	74		88
Specialty financial	33		26
Other specialty	(9)		(2)
Other lines	(1)		(1)
Total underwriting	153		154
Investment and other income, net	187		196
Total property and casualty insurance	340		350
Other (*)	(50)		(40)
Total earnings before realized gains (losses) and income taxes	290		310
Realized gains (losses) on securities	14		(46)
Total earnings before income taxes	$	304	$	264

(*)Includes holding company interest and expenses, which includes a gain of $2 million on retirement of debt in the first three months of 2023.

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Fair Value Measurements

3 Months Ended

Mar. 31, 2024

Fair Value Disclosures [Abstract]

Fair Value Measurements

Fair Value Measurements

Accounting standards for measuring fair value are based on inputs used in estimating fair value. The three levels of the hierarchy are as follows:

Level 1 — Quoted prices for identical assets or liabilities in active markets (markets in which transactions occur with sufficient frequency and volume to provide pricing information on an ongoing basis). AFG’s Level 1 financial instruments consist primarily of publicly traded equity securities, highly liquid government bonds for which quoted market prices in active markets are available and short-term investments of managed investment entities.

Level 2 — Quoted prices for similar instruments in active markets; quoted prices for identical or similar assets or liabilities in inactive markets (markets in which there are few transactions, the prices are not current, price quotations vary substantially over time or among market makers, or in which little information is released publicly); and valuations based on other significant inputs that are observable in active markets. AFG’s Level 2 financial instruments include corporate and municipal fixed maturity securities, asset-backed securities (“ABS”), mortgage-backed securities (“MBS”), certain non-affiliated common stocks and investments of managed investment entities priced using observable inputs. Level 2 inputs include benchmark yields, reported trades, corroborated broker/dealer quotes, issuer spreads and benchmark securities. When non-binding broker quotes can be corroborated by comparison to similar securities priced using observable inputs, they are classified as Level 2.

Level 3 — Valuations derived from market valuation techniques generally consistent with those used to estimate the fair values of Level 2 financial instruments in which one or more significant inputs are unobservable or when the market for a security exhibits significantly less liquidity relative to markets supporting Level 2 fair value measurements. The unobservable inputs may include management’s own assumptions about the assumptions market participants would use based on the best information available at the valuation date. Financial instruments whose fair value is estimated based on non-binding broker quotes or internally developed using significant inputs not based on, or corroborated by, observable market information are classified as Level 3.

As discussed in Note A — “Accounting Policies — Managed Investment Entities,” AFG has set the carrying value of its CLO liabilities equal to the fair value of the CLO assets (which have more observable fair values) as an alternative to reporting those liabilities at separately measured fair values. As a result, the CLO liabilities are categorized within the fair value hierarchy on the same basis (proportionally) as the related CLO assets. Since the portion of the CLO liabilities allocated to Level 3 is derived from the fair value of the CLO assets, these amounts are excluded from the progression of Level 3 financial instruments.

AFG’s management is responsible for the valuation process and uses data from outside sources (including nationally recognized pricing services and broker/dealers) in establishing fair value. AFG’s internal investment professionals are a group of approximately 20 investment professionals whose primary responsibility is to manage AFG’s investment portfolio. These professionals monitor individual investments as well as overall industries and are active in the financial markets on a daily basis. The group is led by AFG’s chief investment officer, who reports directly to one of AFG’s Co-CEOs. Valuation techniques utilized by pricing services and prices obtained from external sources are reviewed by AFG’s internal investment professionals who are familiar with the securities being priced and the markets in which they trade to ensure the fair value determination is representative of an exit price. To validate the appropriateness of the prices obtained, these investment managers consider widely published indices (as benchmarks), recent trades, changes in interest rates, general economic conditions and the credit quality of the specific issuers. In addition, AFG communicates directly with the pricing services regarding the methods and assumptions used in pricing, including verifying, on a test basis, the inputs used by the service to value specific securities.

Assets and liabilities measured and carried at fair value in the financial statements are summarized below (in millions):

	Level 1		Level 2		Level 3		Total
March 31, 2024
Assets:
Available for sale (“AFS”) fixed maturities:
U.S. government and government agencies	$	198	$	1	$	—	$	199
States, municipalities and political subdivisions	—		908		2		910
Foreign government	—		235		—		235
Residential MBS	—		1,672		2		1,674
Commercial MBS	—		72		—		72
Collateralized loan obligations	—		1,592		1		1,593
Other asset-backed securities	—		2,039		335		2,374
Corporate and other	11		2,901		402		3,314
Total AFS fixed maturities	209		9,420		742		10,371
Trading fixed maturities	—		57		—		57
Equity securities	461		34		545		1,040
Assets of managed investment entities (“MIE”)	430		4,229		10		4,669
Other assets — derivatives	—		3		—		3
Total assets accounted for at fair value	$	1,100	$	13,743	$	1,297	$	16,140
Liabilities:
Contingent consideration — acquisitions	$	—	$	—	$	2	$	2
Liabilities of managed investment entities	411		4,047		10		4,468
Other liabilities — derivatives	—		28		—		28
Total liabilities accounted for at fair value	$	411	$	4,075	$	12	$	4,498
December 31, 2023
Assets:
Available for sale fixed maturities:
U.S. government and government agencies	$	235	$	1	$	—	$	236
States, municipalities and political subdivisions	—		982		2		984
Foreign government	—		230		—		230
Residential MBS	—		1,656		2		1,658
Commercial MBS	—		74		—		74
Collateralized loan obligations	—		1,686		1		1,687
Other asset-backed securities	—		2,011		351		2,362
Corporate and other	9		2,757		380		3,146
Total AFS fixed maturities	244		9,397		736		10,377
Trading fixed maturities	—		57		—		57
Equity securities	500		33		485		1,018
Assets of managed investment entities	335		4,140		9		4,484
Other assets — derivatives	—		6		—		6
Total assets accounted for at fair value	$	1,079	$	13,633	$	1,230	$	15,942
Liabilities:
Contingent consideration — acquisitions	$	—	$	—	$	2	$	2
Liabilities of managed investment entities	322		3,976		9		4,307
Other liabilities — derivatives	—		22		—		22
Total liabilities accounted for at fair value	$	322	$	3,998	$	11	$	4,331

Approximately 8% of the total assets carried at fair value at March 31, 2024, were Level 3 assets. Approximately 8% ($109 million) of those Level 3 assets were priced using non-binding broker quotes, for which there is a lack of transparency as to the inputs used to determine fair value. Details as to the quantitative inputs are neither provided by the brokers nor otherwise reasonably obtainable by AFG. Approximately 1% ($10 million) of the Level 3 assets were priced by pricing services where either a single price was not corroborated, prices varied enough among the providers, or other market factors led management to determine these securities be classified as Level 3 assets. Approximately 31%

($397 million) of the Level 3 assets were equity investments in limited partnerships and similar investments that do not qualify for equity method accounting whose prices were determined based on financial information provided by the limited partnerships.

Internally developed prices for fixed maturities are estimated using a variety of inputs, including appropriate credit spreads over the treasury yield (of a similar duration), trade information and prices of comparable securities and other security specific features (such as optional early redemption). Internally developed Level 3 asset fair values represent approximately 60% ($781 million) of the total fair value of Level 3 assets at March 31, 2024. Approximately 73% ($566 million) of these internally developed Level 3 assets are priced using a pricing model that uses a discounted cash flow approach to estimate the fair value of fixed maturity securities. The credit spread applied by management is the significant unobservable input of the pricing model. In instances where the security is currently callable at par value and the pricing model suggests a higher price, management caps the fair value at par value. Approximately 18% ($144 million) of the internally developed Level 3 assets are equity securities which are priced primarily using internal models with some inputs that are not market observable. Management believes that any justifiable changes in unobservable inputs used to determine internally developed fair values would not have resulted in a material change in AFG’s financial position.

Changes in balances of Level 3 financial assets and liabilities carried at fair value during the first three months of 2024 and 2023 are presented below (in millions). The transfers into and out of Level 3 were due to changes in the availability of market observable inputs. All transfers are reflected in the table at fair value as of the end of the reporting period.

			Total realized/unrealized gains (losses) included in
	Balance at December 31, 2023		Net earnings (loss)		Other comprehensive income (loss)		Purchases and issuances		Sales and settlements		Transfer into Level 3		Transfer out of Level 3		Balance at March 31, 2024
AFS fixed maturities:
U.S. government agency	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
State and municipal	2		—		—		—		—		—		—		2
Residential MBS	2		—		—		—		—		—		—		2
Commercial MBS	—		—		—		—		—		—		—		—
Collateralized loan obligations	1		—		—		—		—		—		—		1
Other asset-backed securities	351		—		—		15		(5)		—		(26)		335
Corporate and other	380		(1)		—		33		(6)		—		(4)		402
Total AFS fixed maturities	736		(1)		—		48		(11)		—		(30)		742
Equity securities	485		20		—		42		(2)		—		—		545
Assets of MIE	9		(1)		—		2		—		—		—		10
Total Level 3 assets	$	1,230	$	18	$	—	$	92	$	(13)	$	—	$	(30)	$	1,297
Contingent consideration — acquisitions	$	(2)	$	—	$	—	$	—	$	—	$	—	$	—	$	(2)
Total Level 3 liabilities	$	(2)	$	—	$	—	$	—	$	—	$	—	$	—	$	(2)

			Total realized/unrealized gains (losses) included in
	Balance at December 31, 2022		Net earnings (loss)		Other comprehensive income (loss)		Purchases and issuances		Sales and settlements		Transfer into Level 3		Transfer out of Level 3		Balance at March 31, 2023
AFS fixed maturities:
U.S. government agency	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
State and municipal	5		—		—		—		—		—		—		5
Residential MBS	9		—		—		—		(3)		4		(5)		5
Commercial MBS	—		—		—		—		—		—		—		—
Collateralized loan obligations	2		—		—		—		—		—		(1)		1
Other asset-backed securities	329		—		4		7		(5)		—		—		335
Corporate and other	319		5		2		44		(11)		—		—		359
Total AFS fixed maturities	664		5		6		51		(19)		4		(6)		705
Equity securities	427		(3)		—		31		(22)		—		(22)		411
Assets of MIE	11		(1)		—		2		—		—		—		12
Total Level 3 assets	$	1,102	$	1	$	6	$	84	$	(41)	$	4	$	(28)	$	1,128
Contingent consideration — acquisitions	$	(25)	$	—	$	—	$	—	$	—	$	—	$	—	$	(25)
Total Level 3 liabilities	$	(25)	$	—	$	—	$	—	$	—	$	—	$	—	$	(25)

Fair Value of Financial Instruments   The carrying value and fair value of financial instruments that are not carried at fair value in the financial statements are summarized below (in millions):

	Carrying Value		Fair Value
			Total		Level 1		Level 2		Level 3
March 31, 2024
Financial assets:
Cash and cash equivalents	$	1,087	$	1,087	$	1,087	$	—	$	—
Mortgage loans	722		671		—		—		671
Total financial assets not accounted for at fair value	$	1,809	$	1,758	$	1,087	$	—	$	671
Long-term debt	$	1,475	$	1,358	$	—	$	1,355	$	3
Total financial liabilities not accounted for at fair value	$	1,475	$	1,358	$	—	$	1,355	$	3
December 31, 2023
Financial assets:
Cash and cash equivalents	$	1,225	$	1,225	$	1,225	$	—	$	—
Mortgage loans	643		596		—		—		596
Total financial assets not accounted for at fair value	$	1,868	$	1,821	$	1,225	$	—	$	596
Long-term debt	$	1,475	$	1,345	$	—	$	1,342	$	3
Total financial liabilities not accounted for at fair value	$	1,475	$	1,345	$	—	$	1,342	$	3

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Investments

3 Months Ended

Mar. 31, 2024

Investments, Debt and Equity Securities [Abstract]

Investments

Investments

Available for sale fixed maturities at March 31, 2024 and December 31, 2023, consisted of the following (in millions):

	Amortized Cost		Allowance for Expected Credit Losses		Gross Unrealized				Net Unrealized		Fair Value
					Gains		Losses
March 31, 2024
Fixed maturities:
U.S. government and government agencies	$	206	$	—	$	—	$	(7)	$	(7)	$	199
States, municipalities and political subdivisions	949		—		6		(45)		(39)		910
Foreign government	240		—		—		(5)		(5)		235
Residential MBS	1,807		2		25		(156)		(131)		1,674
Commercial MBS	72		—		—		—		—		72
Collateralized loan obligations	1,605		3		13		(22)		(9)		1,593
Other asset-backed securities	2,469		6		13		(102)		(89)		2,374
Corporate and other	3,386		—		39		(111)		(72)		3,314
Total fixed maturities	$	10,734	$	11	$	96	$	(448)	$	(352)	$	10,371
December 31, 2023
Fixed maturities:
U.S. government and government agencies	$	243	$	—	$	1	$	(8)	$	(7)	$	236
States, municipalities and political subdivisions	1,014		—		8		(38)		(30)		984
Foreign government	236		—		1		(7)		(6)		230
Residential MBS	1,788		1		26		(155)		(129)		1,658
Commercial MBS	75		—		—		(1)		(1)		74
Collateralized loan obligations	1,709		3		9		(28)		(19)		1,687
Other asset-backed securities	2,477		5		10		(120)		(110)		2,362
Corporate and other	3,210		3		52		(113)		(61)		3,146
Total fixed maturities	$	10,752	$	12	$	107	$	(470)	$	(363)	$	10,377

Equity securities which are reported at fair value with holding gains and losses recognized in net earnings, consisted of the following at March 31, 2024 and December 31, 2023 (in millions):

	March 31, 2024						December 31, 2023
	Actual Cost		Fair Value		Fair Value Over Cost		Actual Cost		Fair Value		Fair Value Over Cost
Common stocks	$	531	$	629	$	98	$	512	$	586	$	74
Perpetual preferred stocks	385		411		26		422		432		10
Total equity securities carried at fair value	$	916	$	1,040	$	124	$	934	$	1,018	$	84

The following table shows the carrying value and net investment income from investments accounted for using the equity method (in millions):

					Net Investment Income
	Carrying Value				Three months ended March 31,
	March 31, 2024		December 31, 2023		2024		2023
Real estate-related investments (*)	$	1,309	$	1,320	$	(6)	$	47
Private equity	500		457		30		8
Private debt	39		37		1		2
Total investments accounted for using the equity method	$	1,848	$	1,814	$	25	$	57

(*)91% and 92% of the carrying value relates to underlying investments in multi-family properties as of March 31, 2024 and December 31, 2023, respectively.

The earnings (losses) from these investments are generally reported on a quarter lag due to the timing required to obtain the necessary information from the funds. AFG regularly reviews and discusses fund performance with the fund managers to corroborate the reasonableness of the underlying reported asset values and to assess whether any events have occurred within the lag period that may materially affect the valuation of these investments.

With respect to partnerships and similar investments, AFG had unfunded commitments of $443 million and $418 million as of March 31, 2024 and December 31, 2023, respectively.

The following table shows gross unrealized losses (dollars in millions) on available for sale fixed maturities by investment category and length of time that individual securities have been in a continuous unrealized loss position at the following balance sheet dates.

	Less Than Twelve Months						Twelve Months or More
	Unrealized Loss		Fair Value		Fair Value as % of Cost		Unrealized Loss		Fair Value		Fair Value as % of Cost
March 31, 2024
Fixed maturities:
U.S. government and government agencies	$	—	$	27	100	%	$	(7)	$	150	96	%
States, municipalities and political subdivisions	(2)		184		99	%	(43)		529		92	%
Foreign government	—		17		100	%	(5)		206		98	%
Residential MBS	(1)		127		99	%	(155)		1,017		87	%
Commercial MBS	—		—		—	%	—		42		100	%
Collateralized loan obligations	—		70		100	%	(22)		456		95	%
Other asset-backed securities	(1)		103		99	%	(101)		1,591		94	%
Corporate and other	(5)		408		99	%	(106)		1,416		93	%
Total fixed maturities	$	(9)	$	936	99	%	$	(439)	$	5,407	92	%
December 31, 2023
Fixed maturities:
U.S. government and government agencies	$	—	$	11	100	%	$	(8)	$	191	96	%
States, municipalities and political subdivisions	(1)		76		99	%	(37)		526		93	%
Foreign government	—		—		—	%	(7)		207		97	%
Residential MBS	(1)		42		98	%	(154)		1,089		88	%
Commercial MBS	—		—		—	%	(1)		61		98	%
Collateralized loan obligations	—		25		100	%	(28)		807		97	%
Other asset-backed securities	(1)		151		99	%	(119)		1,663		93	%
Corporate and other	(4)		123		97	%	(109)		1,455		93	%
Total fixed maturities	$	(7)	$	428	98	%	$	(463)	$	5,999	93	%

At March 31, 2024, the gross unrealized losses on fixed maturities of $448 million relate to approximately 1,450 securities. Investment grade securities (as determined by nationally recognized rating agencies) represented approximately 95% of the gross unrealized loss and 95% of the fair value of securities with unrealized losses.

To evaluate fixed maturities for expected credit losses (impairment), management considers whether the unrealized loss is credit-driven or a result of changes in market interest rates, the extent to which fair value is less than cost basis, historical operating, balance sheet and cash flow data from the issuer, third party research and communications with industry specialists and discussions with issuer management.

AFG analyzes its MBS for expected credit losses (impairment) each quarter based upon expected future cash flows. Management estimates expected future cash flows based upon its knowledge of the MBS market, cash flow projections (which reflect loan to collateral values, subordination, vintage and geographic concentration) received from independent sources, implied cash flows inherent in security ratings and analysis of historical payment data.

Management believes AFG will recover its cost basis (net of any allowance) in the securities with unrealized losses and that AFG has the ability to hold the securities until they recover in value and had no intent to sell them at March 31, 2024.

A progression of the allowance for expected credit losses on available for sale fixed maturity securities is shown below (in millions):

	Structured Securities (*)		Corporate and Other		Total
Balance at December 31, 2023	$	9	$	3	$	12
Provision for expected credit losses on securities with no previous allowance	1		—		1
Additions to previously recognized expected credit losses	1		—		1
Reductions due to sales or redemptions	—		(3)		(3)
Balance at March 31, 2024	$	11	$	—	$	11
Balance at December 31, 2022	$	10	$	1	$	11
Provision for expected credit losses on securities with no previous allowance	1		5		6
Reductions to previously recognized expected credit losses	—		(1)		(1)
Reductions due to sales or redemptions	—		—		—
Balance at March 31, 2023	$	11	$	5	$	16

(*)Includes mortgage-backed securities, collateralized loan obligations and other asset-backed securities.

In the first three months of 2024 and 2023, AFG did not purchase any securities with expected credit losses.

The table below sets forth the scheduled maturities of AFG’s available for sale fixed maturities as of March 31, 2024 (dollars in millions). Securities with sinking funds are reported at average maturity. Actual maturities may differ from contractual maturities because certain securities may be called or prepaid by the issuers.

	Amortized		Fair Value
	Cost, net (*)		Amount		%
Maturity
One year or less	$	462	$	457	4	%
After one year through five years	2,409		2,344		23	%
After five years through ten years	1,279		1,264		12	%
After ten years	631		593		6	%
	4,781		4,658		45	%
Collateralized loan obligations and other ABS (average life of approximately 3 years)	4,065		3,967		38	%
MBS (average life of approximately 6.5 years)	1,877		1,746		17	%
Total	$	10,723	$	10,371	100	%

(*)Amortized cost, net of allowance for expected credit losses.

Certain risks are inherent in fixed maturity securities, including loss upon default, price volatility in reaction to changes in interest rates, and general market factors and risks associated with reinvestment of proceeds due to prepayments or redemptions in a period of declining interest rates.

There were no investments in individual issuers that exceeded 10% of shareholders’ equity at March 31, 2024 or December 31, 2023.

Net Investment Income   The following table shows (in millions) investment income earned and investment expenses incurred.

	Three months ended March 31,
	2024		2023
Investment income:
Fixed maturities:
Interest and amortization	$	134	$	119
Change in fair value (a)	—		3
Equity securities:
Dividends	7		9
Change in fair value (b)	16		16
Equity in earnings of partnerships and similar investments	25		57
Other	22		18
Gross investment income	204		222
Investment expenses	(6)		(5)
Net investment income	$	198	$	217

(a)The change in the fair value of fixed maturities classified as trading and derivatives embedded in convertible fixed maturities related to limited partnerships and similar investments.

(b)Although the change in the fair value of the majority of AFG’s equity securities is recorded in realized gains (losses) on securities, AFG records holding gains and losses on limited partnerships and similar investments that do not qualify for equity method accounting and related equity investments in net investment income.

Realized gains (losses) and changes in unrealized appreciation (depreciation) included in AOCI related to fixed maturity securities are summarized as follows (in millions):

	Three months ended March 31, 2024								Three months ended March 31, 2023
	Realized gains (losses)								Realized gains (losses)
	Before Impairments		Impairment Allowance		Total		Change in Unrealized		Before Impairments		Impairment Allowance		Total		Change in Unrealized
Fixed maturities	$	(4)	$	(2)	$	(6)	$	11	$	(23)	$	(5)	$	(28)	$	107
Equity securities	20		—		20		—		(18)		—		(18)		—
Mortgage loans and other investments	—		—		—		—		—		—		—		—
Total pretax	16		(2)		14		11		(41)		(5)		(46)		107
Tax effects	(3)		—		(3)		(2)		8		1		9		(23)
Net of tax	$	13	$	(2)	$	11	$	9	$	(33)	$	(4)	$	(37)	$	84

All equity securities other than those accounted for under the equity method are carried at fair value through net earnings. AFG recorded net holding gains (losses) on equity securities during the first quarter and first three months of 2024 and 2023 on securities that were still owned at March 31, 2024 and March 31, 2023 as follows (in millions):

	Three months ended March 31,
	2024		2023
Included in realized gains (losses)	$	19	$	(23)
Included in net investment income	16		16
	$	35	$	(7)

Gross realized gains and losses (excluding changes in impairment allowance and mark-to-market of derivatives) on available for sale fixed maturity investment transactions consisted of the following (in millions):

	Three months ended March 31,
	2024		2023
Gross gains	$	—	$	1
Gross losses	(3)		(25)

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Derivatives

3 Months Ended

Mar. 31, 2024

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivatives

Derivatives

As discussed under “Derivatives” in Note A — “Accounting Policies,” AFG uses derivatives to mitigate certain market risks related to its investment portfolio and deferred compensation obligations to employees.

The following table presents the classification of derivative assets and liabilities included in AFG’s Balance Sheet at fair value (in millions):

		March 31, 2024				December 31, 2023
	Balance Sheet Line	Asset		Liability		Asset		Liability
Derivatives designated and qualifying as cash flow hedges:
Interest rate swaps	Other assets/Other liabilities	$	—	$	28	$	1	$	22
Derivatives not designated as hedging instruments:
Fixed maturities with embedded derivatives	Fixed maturities	77		—		81		—
Total return swap	Other assets/Other liabilities	3		—		5		—
		$	80	$	28	$	87	$	22

AFG’s interest rate swaps are designated and qualify as highly effective cash flow hedges to mitigate interest rate risk related to certain floating-rate securities included in AFG’s portfolio of fixed maturity securities. The purpose of each of these swaps is to effectively convert a portion of AFG’s floating-rate fixed maturity securities to fixed rates by offsetting the variability in cash flows attributable to changes in the applicable Secured Overnight Financing Rate (“SOFR”).

Under the terms of the swaps, AFG receives fixed-rate interest payments in exchange for variable interest payments based on SOFR. The notional amounts of the interest rate swaps generally decline over each swap’s respective life (the swaps expire between July 2024 and July 2028) in anticipation of the expected decline in AFG’s portfolio of fixed maturity securities with floating interest rates based on SOFR. The total outstanding notional amount of AFG’s interest rate swaps was $1.26 billion at March 31, 2024 compared to $1.30 billion at December 31, 2023, reflecting scheduled amortization. In the first three months of 2024 and 2023, losses of $7 million and $5 million, respectively, were reclassified from AOCI to net earnings. Based on forward interest rate curves at March 31, 2024, management estimates that it will reclassify approximately $21 million of pre-tax net losses on interest rate swaps in AOCI to net investment income over the next twelve months. The actual amount will vary based on changes in SOFR. A collateral receivable supporting these swaps of $48 million at both March 31, 2024 and December 31, 2023 is included in other assets in AFG’s Balance Sheet.

The fixed maturities with embedded derivatives consist of convertible fixed maturity securities and interest-only and principal-only MBS. AFG records the change in the fair value of these securities in net earnings. These investments are part of AFG’s overall investment strategy and represent a small component of AFG’s overall investment portfolio.

AFG is exposed to fair value changes from certain equity and fixed maturity market-based exposures related to its deferred compensation obligations to certain employees. To mitigate this risk, AFG entered into a total return swap in 2022. A liability to return collateral related to the swap of $5 million at both March 31, 2024 and December 31, 2023 is included in other liabilities in AFG’s Balance Sheet.

The following table summarizes the gains (losses) included in AFG’s Statement of Earnings for changes in the fair value of derivatives for the three months ended March 31, 2024 and 2023 (in millions):

		Three months ended March 31,
	Statement of Earnings Line	2024		2023
Qualifying cash flow hedges - gains (losses) reclassified from AOCI to net earnings:
Interest rate swaps	Net investment income	$	(7)	$	(5)
Non-designated hedges - gains (losses) included in net earnings:
Fixed maturities with embedded derivatives	Realized gains (losses) on securities	(1)		1
Fixed maturities with embedded derivatives	Net investment income	—		3
Total return swap	Other expenses	6		6
Earnings (losses) on non-designated hedges		5		10
Total earnings (losses) on derivatives		$	(2)	$	5

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Managed Investment Entities

3 Months Ended

Mar. 31, 2024

Variable Interest Entity, Primary Beneficiary, Does Not Hold Majority Voting Interest, Disclosures [Abstract]

Managed Investment Entities

Managed Investment Entities

AFG is the investment manager and it has investments ranging from 13.3% to 100% of the most subordinate debt tranche of thirteen active collateralized loan obligation entities (“CLOs”), which are considered variable interest entities. AFG also owns portions of the senior debt tranches of certain of these CLOs. Upon formation between 2012 and 2024, these entities issued securities in various senior and subordinate classes and invested the proceeds primarily in secured bank loans, which serve as collateral for the debt securities issued by each CLO. None of the collateral was purchased from AFG. AFG’s investments in the subordinate debt tranches of these entities receive residual income from the CLOs only after the CLOs pay expenses (including management fees to AFG) and interest on and returns of capital to senior levels of debt securities. There are no contractual requirements for AFG to provide additional funding for these entities. AFG has not provided and does not intend to provide any financial support to these entities.

AFG’s maximum exposure to economic loss on the CLOs that it manages is limited to its investment in those CLOs, which had an aggregate fair value of $201 million (including $139 million invested in the most subordinate tranches and $30 million invested in a temporary warehousing entity) at March 31, 2024.

In February 2024, AFG formed one new CLO, which issued $406 million face amount of liabilities (including $32 million face amount purchased by AFG). In March 2023, AFG formed one new CLO, which issued $407 million face amount of liabilities (including $16 million face amount purchased by AFG).

The following table shows a progression of the fair value of AFG's investment in CLO tranches (in millions):

	Three months ended March 31,
	2024		2023
Balance at beginning of period	$	137	$	112
Purchases	28		11
Sales	—		—
Distributions	(9)		(5)
Change in fair value	13		1
Balance at end of period (*)	$	169	$	119

(*)Excludes $30 million and $13 million invested in a temporary warehousing entity at March 31, 2024 and March 31, 2023, respectively, that was established to provide AFG the ability to form a new CLO.

The revenues and expenses of the CLOs are separately identified in AFG’s Statement of Earnings, after the elimination of management fees and earnings attributable to AFG as measured by the change in the fair value of AFG’s investments in the CLOs. Selected financial information related to the CLOs is shown below (in millions):

	Three months ended March 31,
	2024		2023
Gains (losses) on change in fair value of assets/liabilities (*):
Assets	$	12	$	34
Liabilities	(2)		(38)
Management fees paid to AFG	3		4
CLO earnings attributable to AFG	14		1

(*)Included in revenues in AFG’s Statement of Earnings.

The aggregate unpaid principal balance of the CLOs’ fixed maturity investments exceeded the fair value of the investments by $95 million and $109 million at March 31, 2024 and December 31, 2023, respectively. The aggregate unpaid principal balance of the CLOs’ debt exceeded its carrying value by $253 million at both of those dates. The CLO assets include loans with an aggregate fair value of $1 million at March 31, 2024 and $7 million at December 31, 2023, for which the CLOs are not accruing interest because the loans are in default (aggregate unpaid principal balance of $5 million at March 31, 2024 and $13 million at December 31, 2023).

In addition to the CLOs that it manages, AFG had investments in CLOs that are managed by third parties (therefore not consolidated), which are included in available for sale fixed maturity securities and had a fair value of $1.59 billion at March 31, 2024 and $1.69 billion at December 31, 2023.

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Goodwill and Other Intangibles

3 Months Ended

Mar. 31, 2024

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Other Intangibles

Goodwill and Other Intangibles

There were no changes in the goodwill balance of $305 million during the first three months of 2024.

Included in other assets in AFG’s Balance Sheet is $208 million at March 31, 2024 and $213 million at December 31, 2023 in amortizable intangible assets related to acquisitions. These amounts are net of accumulated amortization of $44 million and $39 million, respectively. Amortization of intangibles was $5 million and $3 million in the first three months of 2024 and 2023, respectively.

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Long-Term Debt

3 Months Ended

Mar. 31, 2024

Debt Disclosure [Abstract]

Long-Term Debt

Long-Term Debt

Long-term debt consisted of the following (in millions):

	March 31, 2024						December 31, 2023
	Principal		Discount and Issue Costs		Carrying Value		Principal		Discount and Issue Costs		Carrying Value
Direct Senior Obligations of AFG:
4.50% Senior Notes due June 2047	$	567	$	(1)	$	566	$	567	$	(1)	$	566
5.25% Senior Notes due April 2030	253		(4)		249		253		(4)		249
Other	3		—		3		3		—		3
	823		(5)		818		823		(5)		818
Direct Subordinated Obligations of AFG:
4.50% Subordinated Debentures due September 2060	200		(5)		195		200		(5)		195
5.125% Subordinated Debentures due December 2059	200		(5)		195		200		(5)		195
5.625% Subordinated Debentures due June 2060	150		(4)		146		150		(4)		146
5.875% Subordinated Debentures due March 2059	125		(4)		121		125		(4)		121
	675		(18)		657		675		(18)		657
	$	1,498	$	(23)	$	1,475	$	1,498	$	(23)	$	1,475

Scheduled principal payments on debt for the balance of 2024, the subsequent five years and thereafter are as follows: 2024 — none; 2025 — none; 2026 — none; 2027 — none; 2028 — none; 2029 — none and thereafter — $1.50 billion.

In the first three months of 2023, AFG repurchased $15 million principal amount of its 4.50% Senior Notes due in June 2047 for $13 million and $3 million principal amount of its 5.25% Senior Notes due in April 2030 for $3 million in open market transactions.

AFG can borrow up to $450 million under its revolving credit facility, which expires in June 2028. Amounts borrowed under this agreement bear interest, based on AFG’s credit rating, at rates ranging from 1.00% to 1.75% (currently 1.25%) over a SOFR-based floating rate. No amounts were borrowed under this facility at March 31, 2024 or December 31, 2023.

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Shareholders' Equity

3 Months Ended

Mar. 31, 2024

Stockholders' Equity Note [Abstract]

Shareholders' Equity

Shareholders’ Equity

AFG is authorized to issue 12.5 million shares of Voting Preferred Stock and 12.5 million shares of Nonvoting Preferred Stock, each without par value.

Accumulated Other Comprehensive Income (Loss), Net of Tax (“AOCI”)   Comprehensive income is defined as all changes in shareholders’ equity except those arising from transactions with shareholders. Comprehensive income includes net earnings and other comprehensive income (loss), which consists primarily of changes in net unrealized gains or losses on available for sale fixed maturity securities.

The progression of the components of accumulated other comprehensive income (loss) follows (in millions):

			Other Comprehensive Income (Loss)
	AOCI Beginning Balance		Pretax		Tax		Net of tax		AOCI Ending Balance
Three months ended March 31, 2024
Net unrealized gains (losses) on securities:
Unrealized holding gains (losses) on securities arising during the period			$	6	$	(1)	$	5
Reclassification adjustment for realized (gains) losses included in net earnings (*)			5		(1)		4
Total net unrealized gains (losses) on securities	$	(287)	11		(2)		9		$	(278)
Net unrealized gains (losses) on cash flow hedges:
Unrealized holding gains (losses) on cash flow hedges arising during the period			(13)		3		(10)
Reclassification adjustment for investment income included in net earnings (*)			7		(2)		5
Total net unrealized gains (losses) on cash flow hedges	(17)		(6)		1		(5)		(22)
Foreign currency translation adjustments	(17)		—		—		—		(17)
Pension and other postretirement plan adjustments	2		—		—		—		2
Total	$	(319)	$	5	$	(1)	$	4	$	(315)
Three months ended March 31, 2023
Net unrealized gains (losses) on securities:
Unrealized holding gains (losses) on securities arising during the period			$	78	$	(17)	$	61
Reclassification adjustment for realized (gains) losses included in net earnings (*)			29		(6)		23
Total net unrealized gains (losses) on securities	$	(497)	107		(23)		84		$	(413)
Net unrealized gains (losses) on cash flow hedges:
Unrealized holding gains (losses) on cash flow hedges arising during the period			5		(1)		4
Reclassification adjustment for investment income included in net earnings (*)			5		(1)		4
Total net unrealized gains (losses) on cash flow hedges	(29)		10		(2)		8		(21)
Foreign currency translation adjustments	(20)		—		—		—		(20)
Pension and other postretirement plan adjustments	3		—		—		—		3
Total	$	(543)	$	117	$	(25)	$	92	$	(451)

(*)The reclassification adjustments affected the following lines in AFG’s Statement of Earnings:

OCI component	Affected line in the statement of earnings
Pretax - Net unrealized gains (losses) on securities	Realized gains (losses) on securities
Pretax - Net unrealized gains (losses) on cash flow hedges	Net investment income
Tax	Provision for income taxes

Stock Incentive Plans   Under AFG’s stock incentive plans, employees of AFG and its subsidiaries are eligible to receive equity awards in the form of stock options, stock appreciation rights, restricted stock awards, restricted stock units and stock awards. In the first three months of 2024, AFG issued 157,681 shares of restricted Common Stock (fair value of $126.24 per share) under the Stock Incentive Plan.

Total compensation expense related to stock incentive plans of AFG and its subsidiaries was $4 million and $5 million in the first three months of 2024 and 2023, respectively.

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Income Taxes

3 Months Ended

Mar. 31, 2024

Income Tax Disclosure [Abstract]

Income Taxes

Income Taxes

The following is a reconciliation of income taxes at the statutory rate of 21% to the provision for income taxes as shown in AFG’s Statement of Earnings (dollars in millions):

	Three months ended March 31,
	2024				2023
	Amount		% of EBT		Amount		% of EBT
Earnings before income taxes (“EBT”)	$	304			$	264
Income taxes at statutory rate	$	64	21	%	$	55	21	%
Effect of:
Employee stock ownership plan dividend paid deduction	(2)		(1	%)	(3)		(1	%)
Stock-based compensation	(2)		(1	%)	(2)		(1	%)
Tax exempt interest	(1)		—	%	(1)		—	%
Dividends received deduction	—		—	%	(1)		—	%
Nondeductible expenses	2		1	%	3		1	%
Foreign operations	—		—	%	2		1	%
Other	1		—	%	(1)		(1	%)
Provision for income taxes as shown in the statement of earnings	$	62	20	%	$	52	20	%

On January 1, 2023, the two major tax provisions in the Inflation Reduction Act (“IRA”) became effective. The IRA created a new corporate alternative minimum tax (“CAMT”) based on the earnings that a company reports in its financial statements and imposes a 1% excise tax on corporate stock repurchases. Any CAMT incurred would be available to offset taxes payable under the standard calculation in future periods. Accordingly, the CAMT is a timing difference and would result in the recording of an offsetting deferred tax asset with no impact on overall income tax expense. Based on current guidance, while AFG meets the financial statement income thresholds to be subject to CAMT, management does not believe AFG will incur a CAMT liability for 2024. The excise tax on stock repurchases in excess of any issuances is recorded as part of the cost of the repurchases directly in shareholders’ equity.

The Organisation for Economic Co-operation and Development, an intergovernmental organization with 38 member countries, has proposed a global minimum corporate tax rate of 15% (“Pillar Two”). Due to AFG’s limited international operations and the tax rate AFG is subject to in those jurisdictions, management does not believe Pillar Two will have a material impact on AFG’s results of operations.

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Contingencies

3 Months Ended

Mar. 31, 2024

Commitments and Contingencies Disclosure [Abstract]

Contingencies

Contingencies

There have been no significant changes to the matters discussed and referred to in Note N — “Contingencies” of AFG’s 2023 Form 10-K, which covers property and casualty insurance reserves for claims related to environmental exposures, asbestos and other mass tort claims and environmental and occupational injury and disease claims of subsidiaries’ former railroad and manufacturing operations.

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Insurance

3 Months Ended

Mar. 31, 2024

Insurance [Abstract]

Insurance

Insurance

Property and Casualty Insurance Reserves The following table provides an analysis of changes in the liability for losses and loss adjustment expenses during the first three months of 2024 and 2023 (in millions):

	Three months ended March 31,
	2024		2023
Balance at beginning of year	$	13,087	$	11,974
Less reinsurance recoverables, net of allowance	4,288		3,767
Net liability at beginning of year	8,799		8,207
Provision for losses and LAE occurring in the current period	962		883
Net decrease in the provision for claims of prior years	(50)		(63)
Total losses and LAE incurred	912		820
Payments for losses and LAE of:
Current year	(94)		(66)
Prior years	(895)		(815)
Total payments	(989)		(881)
Foreign currency translation and other	1		1
Net liability at end of period	8,723		8,147
Add back reinsurance recoverables, net of allowance	4,327		3,614
Gross unpaid losses and LAE included in the balance sheet at end of period	$	13,050	$	11,761

The net decrease in the provision for claims of prior years during the first three months of 2024 reflects (i) lower than anticipated losses in the crop business and lower than expected claim severity in the property and inland marine business (within the Property and transportation sub-segment), (ii) lower than anticipated claim severity in the workers’ compensation businesses and lower than expected claim frequency and severity in the executive liability business (within the Specialty casualty sub-segment) and (iii) lower than anticipated claim frequency in the fidelity business and lower than expected claim frequency and severity in the financial institutions business (within the Specialty financial sub-segment). This favorable development was partially offset by (i) higher than anticipated claim severity in the excess liability businesses and higher than expected claim frequency and severity in the social service business (within the Specialty casualty sub-segment), (ii) higher than anticipated claim severity in the innovative markets business (within the Specialty financial sub-segment) and (iii) net adverse development associated with AFG’s internal reinsurance program (within Other specialty).

The net decrease in the provision for claims of prior years during the first three months of 2023 reflects (i) lower than anticipated losses in the crop business, lower than expected claim frequency and severity in the trucking business and lower than anticipated claim frequency in the property and inland marine business (within the Property and transportation sub-segment), (ii) lower than anticipated claim severity in the workers’ compensation businesses and lower than expected claim frequency in the executive liability, excess and surplus and environmental businesses (within the Specialty casualty sub-segment) and (iii) lower than anticipated claim frequency in the surety and trade credit businesses (within the Specialty financial sub-segment). This favorable development was partially offset by (i) higher than anticipated claim severity in the public sector and excess liability businesses (within the Specialty casualty sub-segment) and (ii) net adverse development associated with AFG’s internal reinsurance program (within Other specialty).

Recoverables from Reinsurers and Premiums Receivable Progressions of the 2024 and 2023 allowance for expected credit losses on recoverables from reinsurers and premiums receivable are shown below (in millions):

	Recoverables from Reinsurers				Premiums Receivable
	2024		2023		2024		2023
Balance at December 31	$	10	$	8	$	15	$	8
Provision (credit) for expected credit losses	—		1		—		—
Write-offs charged against the allowance	—		—		—		—
Balance at March 31	$	10	$	9	$	15	$	8

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Pay vs Performance Disclosure - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Pay vs Performance Disclosure
Net earnings	$ 242	$ 212

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Insider Trading Arrangements	3 Months Ended
	Mar. 31, 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

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Accounting Policies (Policies)

3 Months Ended

Mar. 31, 2024

Accounting Policies [Abstract]

Basis of Presentation

Basis of Presentation   The accompanying consolidated financial statements for American Financial Group, Inc. and its subsidiaries (“AFG”) are unaudited; however, management believes that all adjustments (consisting only of normal recurring accruals unless otherwise disclosed herein) necessary for fair presentation have been made. The results of operations for interim periods are not necessarily indicative of results to be expected for the year. The financial statements have been prepared in accordance with the instructions to Form 10-Q and, therefore, do not include all information and footnotes necessary to be in conformity with U.S. generally accepted accounting principles (“GAAP”).

Certain reclassifications have been made to prior periods to conform to the current year’s presentation. All significant intercompany balances and transactions have been eliminated. The results of operations of companies since their formation or acquisition are included in the consolidated financial statements. Events or transactions occurring subsequent to March 31, 2024, and prior to the filing of this Form 10-Q, have been evaluated for potential recognition or disclosure herein.

The preparation of the financial statements requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Changes in circumstances could cause actual results to differ materially from those estimates.

Fair Value Measurements

Fair Value Measurements   Accounting standards define fair value as the price that would be received to sell an asset or paid to transfer a liability (an exit price) in an orderly transaction between market participants on the measurement date. The standards establish a hierarchy of valuation techniques based on whether the assumptions that market participants would use in pricing the asset or liability (“inputs”) are observable or unobservable. Observable inputs reflect market data obtained from independent sources, while unobservable inputs reflect AFG’s assumptions about the assumptions market participants would use in pricing the asset or liability. AFG did not have any material nonrecurring fair value measurements in the first three months of 2024.

Investments

Investments   Equity securities other than those accounted for under the equity method are reported at fair value with holding gains and losses generally recorded in realized gains (losses) on securities. However, AFG records holding gains and losses on limited partnerships and similar investments that do not qualify for equity method accounting (and are therefore carried at fair value), and certain other securities classified at purchase as “fair value through net investment income” in net investment income.

Fixed maturity securities classified as “available for sale” are reported at fair value with unrealized gains and losses included in accumulated other comprehensive income (“AOCI”) in AFG’s Balance Sheet. Fixed maturity securities classified as “trading” are reported at fair value with changes in unrealized holding gains or losses during the period included in net investment income. Mortgage loans (net of any allowance) are carried primarily at the aggregate unpaid balance.

Realized gains or losses on the disposal of fixed maturity securities are determined on the specific identification basis. Premiums and discounts on fixed maturity securities are amortized using the effective interest method. Mortgage-backed securities (“MBS”) are amortized over a period based on estimated future principal payments, including prepayments. Prepayment assumptions are reviewed periodically and adjusted to reflect actual prepayments and changes in expectations.

Limited partnerships and similar investments are generally accounted for using the equity method of accounting. Under the equity method, AFG records its share of the earnings or losses of the investee based on when it is reported by the investee in its financial statements rather than in the period in which the investee declares a dividend. AFG’s share of the earnings or losses from equity method investments is generally recorded on a quarter lag due to the timing of the receipt of the investee’s financial statements. AFG’s equity in the earnings (losses) of limited partnerships and similar investments is included in net investment income.

Credit Losses on Financial Instruments

Credit Losses on Fixed Maturity Investments   When a decline in the value of an available for sale fixed maturity is considered to be other-than-temporary at the balance sheet date, an allowance for credit losses (impairment), including any write-off of accrued interest, is charged to earnings (included in realized gains (losses) on securities). If management can assert that it does not intend to sell the security and it is not more likely than not that it will have to sell it before recovery of its amortized cost basis (net of allowance), then the impairment is separated into two components: (i) the allowance related to credit losses (recorded in earnings) and (ii) the amount related to all other factors (recorded in other comprehensive income). The credit-related portion is measured by comparing a security’s amortized cost to the present value of its current expected cash flows discounted at its effective yield prior to the charge. The allowance is limited to the difference between a security’s amortized cost basis and its fair value. Subsequent increases or decreases in expected credit losses are recorded immediately in net earnings through realized gains (losses). If management intends to sell an impaired security, or it is more likely than not that it will be required to sell the security before recovery, an impairment is recorded in earnings to reduce the amortized cost (net of allowance) of that security to fair value.

Credit Losses on Financial Instruments Measured at Amortized Cost   Credit-related impairments for financial instruments measured at amortized cost (mortgage loans, premiums receivable and reinsurance recoverables) reflect estimated credit losses expected over the life of an exposure or pool of exposures. The estimate of expected credit losses considers historical information, current information, as well as reasonable and supportable forecasts, including estimates of prepayments. Expected credit losses, and subsequent increases or decreases in such expected losses, are recorded immediately through net earnings as an allowance that is deducted from the amortized cost basis of the financial asset, with the net carrying value of the financial asset presented on the balance sheet at the amount expected to be collected.

Derivatives

Derivatives   Derivatives included in AFG’s Balance Sheet are recorded at fair value. Changes in fair value of derivatives are included in earnings unless the derivatives are designated and qualify as highly effective cash flow hedges. AFG’s derivatives that do not qualify for hedge accounting under GAAP consist primarily of components of certain fixed maturity securities (convertible fixed maturities and interest-only and principal-only MBS) and a total return swap related to its deferred compensation obligations to employees.

To qualify for hedge accounting, at the inception of a derivative contract, AFG formally documents the relationship between the terms of the hedge and the hedged items and its risk management objective. This documentation includes defining how hedge effectiveness is evaluated at the inception date and over the life of the derivative.

Changes in the fair value of derivatives that are designated and qualify as highly effective cash flow hedges are recorded in AOCI and are reclassified into earnings when the variability of the cash flows from the hedged items impacts earnings. When the change in the fair value of a qualifying cash flow hedge is included in earnings, it is included in the same line item in the statement of earnings as the cash flows from the hedged item. AFG uses interest rate swaps that are designated and qualify as highly effective cash flow hedges to mitigate interest rate risk related to certain floating-rate securities.

Goodwill

Goodwill   Goodwill represents the excess of cost of subsidiaries over AFG’s equity in their underlying net assets at the date of acquisition. Goodwill is not amortized, but is subject to an impairment test at least annually. An entity is not required to complete the quantitative annual goodwill impairment test on a reporting unit if the entity elects to perform a qualitative analysis and determines that it is more likely than not that the reporting unit’s fair value exceeds its carrying amount.

Reinsurance

Reinsurance   Amounts recoverable from reinsurers are estimated in a manner consistent with the claim liability associated with the reinsured policies. AFG reports as assets (i) the estimated reinsurance recoverable on paid and unpaid losses, including an estimate for losses incurred but not reported, and (ii) amounts paid or due to reinsurers applicable to the unexpired terms of policies in force. Payable to reinsurers includes ceded premiums due to reinsurers, as well as ceded premiums retained by AFG under contracts to fund ceded losses as they become due. AFG also assumes reinsurance from other companies. Earnings on reinsurance assumed is recognized based on information received from ceding companies.

Deferred Policy Acquisition Costs (“DPAC”)

Deferred Policy Acquisition Costs (“DPAC”)   Policy acquisition costs (principally commissions, premium taxes and certain underwriting and policy issuance costs) directly related to the successful acquisition or renewal of an insurance contract are deferred. DPAC is limited based upon recoverability without any consideration for anticipated investment income and is charged against income ratably over the terms of the related policies. A premium deficiency is recognized if the sum of expected claims costs, claims adjustment expenses and unamortized acquisition costs exceed the related unearned premiums. A premium deficiency is first recognized by charging any unamortized acquisition costs to expense to the extent required to eliminate the deficiency. If the premium deficiency is greater than unamortized acquisition costs, a liability is accrued for the excess deficiency and reported with unpaid losses and loss adjustment expenses.

Managed Investment Entities

Managed Investment Entities   A company is considered the primary beneficiary of, and therefore must consolidate, a variable interest entity (“VIE”) based primarily on its ability to direct the activities of the VIE that most significantly impact that entity’s economic performance and the obligation to absorb losses of, or receive benefits from, the entity that could potentially be significant to the VIE.

AFG manages, and has investments in, collateralized loan obligations (“CLOs”) that are VIEs (see Note G — “Managed Investment Entities”). AFG has determined that it is the primary beneficiary of these CLOs because (i) its role as asset manager gives it the power to direct the activities that most significantly impact the economic performance of the CLOs and (ii) through its investment in the CLO debt tranches, it has exposure to CLO losses (limited to the amount AFG invested) and the right to receive CLO benefits that could potentially be significant to the CLOs.

Because AFG has no right to use the CLO assets and no obligation to pay the CLO liabilities, the assets and liabilities of the CLOs are shown separately in AFG’s Balance Sheet. AFG has elected the fair value option for reporting on the CLO assets and liabilities to improve the transparency of financial reporting related to the CLOs. The net gain or loss from accounting for the CLO assets and liabilities at fair value is presented separately in AFG’s Statement of Earnings.

The fair values of a CLO’s assets may differ from the separately measured fair values of its liabilities even though the CLO liabilities only have recourse to the CLO assets. AFG has set the carrying value of the CLO liabilities equal to the fair value of the CLO assets (which have more observable fair values) as an alternative to reporting those liabilities at a separately measured fair value. CLO earnings attributable to AFG’s shareholders are measured by the change in the fair value of AFG’s investments in the CLOs and management fees earned.

At March 31, 2024, assets and liabilities of managed investment entities included $164 million in assets and $134 million in liabilities of a temporary warehousing entity that was established to provide AFG the ability to form a new CLO. At closing, all warehoused assets will be transferred to the new CLO and the liabilities will be repaid.

Unpaid Losses and Loss Adjustment Expenses

Unpaid Losses and Loss Adjustment Expenses   The liabilities stated for unpaid claims and for expenses of investigation and adjustment of unpaid claims represent management’s best estimate and are based upon (i) the accumulation of case estimates for losses reported prior to the close of the accounting period on direct business written; (ii) estimates received from ceding reinsurers and insurance pools and associations; (iii) estimates of unreported losses (including possible development on known claims) based on past experience; (iv) estimates based on experience of expenses for investigating and adjusting claims; and (v) the current state of the law and coverage litigation. Establishing reserves for asbestos, environmental and other mass tort claims involves considerably more judgment than other types of claims due to, among other things, inconsistent court decisions, an increase in bankruptcy filings as a result of asbestos-related liabilities, novel theories of coverage, and judicial interpretations that often expand theories of recovery and broaden the scope of coverage.

Loss reserve liabilities are subject to the impact of changes in claim amounts and frequency and other factors. Changes in estimates of the liabilities for losses and loss adjustment expenses are reflected in the statement of earnings in the period in which determined. Despite the variability inherent in such estimates, management believes that the liabilities for unpaid losses and loss adjustment expenses are adequate and reasonable.

Debt Issuance Costs

Debt Issuance Costs   Debt issuance costs related to AFG’s outstanding debt are presented in its Balance Sheet as a direct reduction in the carrying value of long-term debt and are amortized over the life of the related debt using the effective interest method as a component of interest expense. Debt issuance costs related to AFG’s revolving credit facilities are included in other assets in AFG’s Balance Sheet.

Leases

Leases   Leases for terms of longer than one year are recognized as assets and liabilities for the rights and obligations created by those leases on the balance sheet based on the present value of contractual cash flows.

At March 31, 2024 AFG has a $204 million lease liability included in other liabilities and a lease right-of-use asset of $181 million included in other assets compared to $198 million and $176 million, respectively, at December 31, 2023.

Premium Recognition

Premium Recognition   Property and casualty premiums are earned generally over the terms of the policies on a pro rata basis. Unearned premiums represent that portion of premiums written, which is applicable to the unexpired terms of policies in force. On reinsurance assumed from other insurance companies or written through various underwriting organizations, unearned premiums are based on information received from such companies and organizations.

Income Taxes

Income Taxes   Deferred income taxes are calculated using the liability method. Under this method, deferred income tax assets and liabilities are determined based on differences between financial reporting and tax bases and are measured using enacted tax rates. A valuation allowance is established to reduce total deferred tax assets to an amount that will more likely than not be realized. The effect of a change in tax rates on deferred tax assets and liabilities is recorded in net earnings in the period that includes the enactment date.

AFG recognizes the tax benefits of uncertain tax positions only when the position is more likely than not to be sustained under examination by the appropriate taxing authority. Interest and penalties on AFG’s reserve for uncertain tax positions are recognized as a component of tax expense.

Stock-Based Compensation

Stock-Based Compensation   All share-based grants are recognized as compensation expense on a straight-line basis over their vesting periods based on their calculated fair value at the date of grant.

AFG records excess tax benefits or deficiencies for share-based payments through income tax expense in the statement of earnings. In addition, AFG accounts for forfeitures of awards when they occur.

Benefit Plans

Benefit Plans   AFG provides retirement benefits to qualified employees of participating companies through the AFG 401(k) Retirement and Savings Plan, a defined contribution plan. AFG makes all contributions to the retirement fund portion of the plan and matches a percentage of employee contributions to the savings fund. Company contributions are expensed in the year for which they are declared. AFG and many of its subsidiaries provide health care and life insurance benefits to eligible retirees. AFG also provides postemployment benefits to former or inactive employees (primarily those on disability) who were not deemed retired under other company plans. The projected future cost of providing these benefits is expensed over the period employees earn such benefits.

Earnings Per Share

Earnings Per Share   Although basic earnings per share only considers shares of common stock outstanding during the period, the calculation of diluted earnings per share includes the following adjustments to weighted average common shares related to stock-based compensation plans: first three months of 2024 and 2023 — 0.1 million and 0.2 million.

There were no anti-dilutive potential common shares for the first three months of 2024 or 2023.

Statement of Cash Flows

Statement of Cash Flows   For cash flow purposes, “investing activities” are defined as making and collecting loans and acquiring and disposing of debt or equity instruments, property and equipment and businesses. “Financing activities” include obtaining resources from owners and providing them with a return on their investments, borrowing money and repaying amounts borrowed. All other activities are considered “operating.” Short-term investments having original maturities of three months or less when purchased are considered to be cash equivalents for purposes of the financial statements.

Segments of Operations

AFG reports its property and casualty insurance business in the following Specialty sub-segments: (i) Property and transportation, which includes physical damage and liability coverage for buses and trucks and other specialty transportation niches, inland and ocean marine, agricultural-related products and other commercial property coverages, (ii) Specialty casualty, which includes primarily excess and surplus, executive and professional liability, general liability, umbrella and excess liability, specialty coverages in targeted markets, customized programs for small to mid-sized businesses and workers’ compensation insurance, and (iii) Specialty financial, which includes risk management insurance programs for lending and leasing institutions (including equipment leasing and collateral and lender-placed mortgage property insurance), fidelity and surety products and trade credit insurance. Premiums and underwriting profit included under Other specialty represent business assumed by AFG’s internal reinsurance program from the operations that make up AFG’s other Specialty sub-segments and amortization of a deferred gain on a retroactive reinsurance transaction related to the sale of a business. AFG’s reportable segments and their components were determined based primarily upon similar economic characteristics, products and services.

Accumulated Other Comprehensive Income, Net of Tax ("AOCI")

Accumulated Other Comprehensive Income (Loss), Net of Tax (“AOCI”)   Comprehensive income is defined as all changes in shareholders’ equity except those arising from transactions with shareholders. Comprehensive income includes net earnings and other comprehensive income (loss), which consists primarily of changes in net unrealized gains or losses on available for sale fixed maturity securities.

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Acquisition of Businesses (Tables)

3 Months Ended

Mar. 31, 2024

Business Combination and Asset Acquisition [Abstract]

Schedule of estimated fair values of assets acquired and liabilities assumed

The purchase price was allocated to the acquired assets and liabilities of CRS based on management’s best estimate of fair value as of the acquisition date. The purchase price allocation is shown below (in millions).

	July 3, 2023
Cash paid at purchase	$	234
Tangible assets acquired:
Cash and cash equivalents	$	26
Agents’ balances and premiums receivable	164
Other assets	3
Total tangible assets acquired	$	193
Liabilities acquired:
Other liabilities	$	169
Total liabilities acquired	169
Net tangible assets acquired, at fair value	24
Excess purchase price over net tangible assets acquired	$	210
Allocation of excess purchase price:
Intangible assets acquired (*)	$	124
Deferred tax asset (*)	1
Goodwill	85
	$	210

(*)Included in Other assets in AFG’s Balance Sheet.

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Segments of Operations (Tables)

3 Months Ended

Mar. 31, 2024

Segment Reporting [Abstract]

Segment reporting information, by segment

The following tables (in millions) show AFG’s revenues and earnings before income taxes by segment and sub-segment.

	Three months ended March 31,
	2024		2023
Revenues
Property and casualty insurance:
Premiums earned:
Specialty
Property and transportation	$	513	$	475
Specialty casualty	730		704
Specialty financial	243		196
Other specialty	60		62
Total premiums earned	1,546		1,437
Net investment income	205		207
Other income	2		5
Total property and casualty insurance	1,753		1,649
Other	139		137
Total revenues before realized gains (losses)	1,892		1,786
Realized gains (losses) on securities	14		(46)
Total revenues	$	1,906	$	1,740
Earnings Before Income Taxes
Property and casualty insurance:
Underwriting:
Specialty
Property and transportation	$	56	$	43
Specialty casualty	74		88
Specialty financial	33		26
Other specialty	(9)		(2)
Other lines	(1)		(1)
Total underwriting	153		154
Investment and other income, net	187		196
Total property and casualty insurance	340		350
Other (*)	(50)		(40)
Total earnings before realized gains (losses) and income taxes	290		310
Realized gains (losses) on securities	14		(46)
Total earnings before income taxes	$	304	$	264

(*)Includes holding company interest and expenses, which includes a gain of $2 million on retirement of debt in the first three months of 2023.

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Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2024

Fair Value Disclosures [Abstract]

Assets and liabilities measured at fair value

Assets and liabilities measured and carried at fair value in the financial statements are summarized below (in millions):

	Level 1		Level 2		Level 3		Total
March 31, 2024
Assets:
Available for sale (“AFS”) fixed maturities:
U.S. government and government agencies	$	198	$	1	$	—	$	199
States, municipalities and political subdivisions	—		908		2		910
Foreign government	—		235		—		235
Residential MBS	—		1,672		2		1,674
Commercial MBS	—		72		—		72
Collateralized loan obligations	—		1,592		1		1,593
Other asset-backed securities	—		2,039		335		2,374
Corporate and other	11		2,901		402		3,314
Total AFS fixed maturities	209		9,420		742		10,371
Trading fixed maturities	—		57		—		57
Equity securities	461		34		545		1,040
Assets of managed investment entities (“MIE”)	430		4,229		10		4,669
Other assets — derivatives	—		3		—		3
Total assets accounted for at fair value	$	1,100	$	13,743	$	1,297	$	16,140
Liabilities:
Contingent consideration — acquisitions	$	—	$	—	$	2	$	2
Liabilities of managed investment entities	411		4,047		10		4,468
Other liabilities — derivatives	—		28		—		28
Total liabilities accounted for at fair value	$	411	$	4,075	$	12	$	4,498
December 31, 2023
Assets:
Available for sale fixed maturities:
U.S. government and government agencies	$	235	$	1	$	—	$	236
States, municipalities and political subdivisions	—		982		2		984
Foreign government	—		230		—		230
Residential MBS	—		1,656		2		1,658
Commercial MBS	—		74		—		74
Collateralized loan obligations	—		1,686		1		1,687
Other asset-backed securities	—		2,011		351		2,362
Corporate and other	9		2,757		380		3,146
Total AFS fixed maturities	244		9,397		736		10,377
Trading fixed maturities	—		57		—		57
Equity securities	500		33		485		1,018
Assets of managed investment entities	335		4,140		9		4,484
Other assets — derivatives	—		6		—		6
Total assets accounted for at fair value	$	1,079	$	13,633	$	1,230	$	15,942
Liabilities:
Contingent consideration — acquisitions	$	—	$	—	$	2	$	2
Liabilities of managed investment entities	322		3,976		9		4,307
Other liabilities — derivatives	—		22		—		22
Total liabilities accounted for at fair value	$	322	$	3,998	$	11	$	4,331

Changes in balances of Level 3 financial assets

Changes in balances of Level 3 financial assets and liabilities carried at fair value during the first three months of 2024 and 2023 are presented below (in millions). The transfers into and out of Level 3 were due to changes in the availability of market observable inputs. All transfers are reflected in the table at fair value as of the end of the reporting period.

			Total realized/unrealized gains (losses) included in
	Balance at December 31, 2023		Net earnings (loss)		Other comprehensive income (loss)		Purchases and issuances		Sales and settlements		Transfer into Level 3		Transfer out of Level 3		Balance at March 31, 2024
AFS fixed maturities:
U.S. government agency	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
State and municipal	2		—		—		—		—		—		—		2
Residential MBS	2		—		—		—		—		—		—		2
Commercial MBS	—		—		—		—		—		—		—		—
Collateralized loan obligations	1		—		—		—		—		—		—		1
Other asset-backed securities	351		—		—		15		(5)		—		(26)		335
Corporate and other	380		(1)		—		33		(6)		—		(4)		402
Total AFS fixed maturities	736		(1)		—		48		(11)		—		(30)		742
Equity securities	485		20		—		42		(2)		—		—		545
Assets of MIE	9		(1)		—		2		—		—		—		10
Total Level 3 assets	$	1,230	$	18	$	—	$	92	$	(13)	$	—	$	(30)	$	1,297
Contingent consideration — acquisitions	$	(2)	$	—	$	—	$	—	$	—	$	—	$	—	$	(2)
Total Level 3 liabilities	$	(2)	$	—	$	—	$	—	$	—	$	—	$	—	$	(2)

			Total realized/unrealized gains (losses) included in
	Balance at December 31, 2022		Net earnings (loss)		Other comprehensive income (loss)		Purchases and issuances		Sales and settlements		Transfer into Level 3		Transfer out of Level 3		Balance at March 31, 2023
AFS fixed maturities:
U.S. government agency	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
State and municipal	5		—		—		—		—		—		—		5
Residential MBS	9		—		—		—		(3)		4		(5)		5
Commercial MBS	—		—		—		—		—		—		—		—
Collateralized loan obligations	2		—		—		—		—		—		(1)		1
Other asset-backed securities	329		—		4		7		(5)		—		—		335
Corporate and other	319		5		2		44		(11)		—		—		359
Total AFS fixed maturities	664		5		6		51		(19)		4		(6)		705
Equity securities	427		(3)		—		31		(22)		—		(22)		411
Assets of MIE	11		(1)		—		2		—		—		—		12
Total Level 3 assets	$	1,102	$	1	$	6	$	84	$	(41)	$	4	$	(28)	$	1,128
Contingent consideration — acquisitions	$	(25)	$	—	$	—	$	—	$	—	$	—	$	—	$	(25)
Total Level 3 liabilities	$	(25)	$	—	$	—	$	—	$	—	$	—	$	—	$	(25)

Changes in balances of Level 3 financial liabilities

Changes in balances of Level 3 financial assets and liabilities carried at fair value during the first three months of 2024 and 2023 are presented below (in millions). The transfers into and out of Level 3 were due to changes in the availability of market observable inputs. All transfers are reflected in the table at fair value as of the end of the reporting period.

			Total realized/unrealized gains (losses) included in
	Balance at December 31, 2023		Net earnings (loss)		Other comprehensive income (loss)		Purchases and issuances		Sales and settlements		Transfer into Level 3		Transfer out of Level 3		Balance at March 31, 2024
AFS fixed maturities:
U.S. government agency	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
State and municipal	2		—		—		—		—		—		—		2
Residential MBS	2		—		—		—		—		—		—		2
Commercial MBS	—		—		—		—		—		—		—		—
Collateralized loan obligations	1		—		—		—		—		—		—		1
Other asset-backed securities	351		—		—		15		(5)		—		(26)		335
Corporate and other	380		(1)		—		33		(6)		—		(4)		402
Total AFS fixed maturities	736		(1)		—		48		(11)		—		(30)		742
Equity securities	485		20		—		42		(2)		—		—		545
Assets of MIE	9		(1)		—		2		—		—		—		10
Total Level 3 assets	$	1,230	$	18	$	—	$	92	$	(13)	$	—	$	(30)	$	1,297
Contingent consideration — acquisitions	$	(2)	$	—	$	—	$	—	$	—	$	—	$	—	$	(2)
Total Level 3 liabilities	$	(2)	$	—	$	—	$	—	$	—	$	—	$	—	$	(2)

			Total realized/unrealized gains (losses) included in
	Balance at December 31, 2022		Net earnings (loss)		Other comprehensive income (loss)		Purchases and issuances		Sales and settlements		Transfer into Level 3		Transfer out of Level 3		Balance at March 31, 2023
AFS fixed maturities:
U.S. government agency	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—
State and municipal	5		—		—		—		—		—		—		5
Residential MBS	9		—		—		—		(3)		4		(5)		5
Commercial MBS	—		—		—		—		—		—		—		—
Collateralized loan obligations	2		—		—		—		—		—		(1)		1
Other asset-backed securities	329		—		4		7		(5)		—		—		335
Corporate and other	319		5		2		44		(11)		—		—		359
Total AFS fixed maturities	664		5		6		51		(19)		4		(6)		705
Equity securities	427		(3)		—		31		(22)		—		(22)		411
Assets of MIE	11		(1)		—		2		—		—		—		12
Total Level 3 assets	$	1,102	$	1	$	6	$	84	$	(41)	$	4	$	(28)	$	1,128
Contingent consideration — acquisitions	$	(25)	$	—	$	—	$	—	$	—	$	—	$	—	$	(25)
Total Level 3 liabilities	$	(25)	$	—	$	—	$	—	$	—	$	—	$	—	$	(25)

Fair value of financial instruments

The carrying value and fair value of financial instruments that are not carried at fair value in the financial statements are summarized below (in millions):

	Carrying Value		Fair Value
			Total		Level 1		Level 2		Level 3
March 31, 2024
Financial assets:
Cash and cash equivalents	$	1,087	$	1,087	$	1,087	$	—	$	—
Mortgage loans	722		671		—		—		671
Total financial assets not accounted for at fair value	$	1,809	$	1,758	$	1,087	$	—	$	671
Long-term debt	$	1,475	$	1,358	$	—	$	1,355	$	3
Total financial liabilities not accounted for at fair value	$	1,475	$	1,358	$	—	$	1,355	$	3
December 31, 2023
Financial assets:
Cash and cash equivalents	$	1,225	$	1,225	$	1,225	$	—	$	—
Mortgage loans	643		596		—		—		596
Total financial assets not accounted for at fair value	$	1,868	$	1,821	$	1,225	$	—	$	596
Long-term debt	$	1,475	$	1,345	$	—	$	1,342	$	3
Total financial liabilities not accounted for at fair value	$	1,475	$	1,345	$	—	$	1,342	$	3

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Investments (Tables)

3 Months Ended

Mar. 31, 2024

Investments, Debt and Equity Securities [Abstract]

Available for sale fixed maturities

Available for sale fixed maturities at March 31, 2024 and December 31, 2023, consisted of the following (in millions):

	Amortized Cost		Allowance for Expected Credit Losses		Gross Unrealized				Net Unrealized		Fair Value
					Gains		Losses
March 31, 2024
Fixed maturities:
U.S. government and government agencies	$	206	$	—	$	—	$	(7)	$	(7)	$	199
States, municipalities and political subdivisions	949		—		6		(45)		(39)		910
Foreign government	240		—		—		(5)		(5)		235
Residential MBS	1,807		2		25		(156)		(131)		1,674
Commercial MBS	72		—		—		—		—		72
Collateralized loan obligations	1,605		3		13		(22)		(9)		1,593
Other asset-backed securities	2,469		6		13		(102)		(89)		2,374
Corporate and other	3,386		—		39		(111)		(72)		3,314
Total fixed maturities	$	10,734	$	11	$	96	$	(448)	$	(352)	$	10,371
December 31, 2023
Fixed maturities:
U.S. government and government agencies	$	243	$	—	$	1	$	(8)	$	(7)	$	236
States, municipalities and political subdivisions	1,014		—		8		(38)		(30)		984
Foreign government	236		—		1		(7)		(6)		230
Residential MBS	1,788		1		26		(155)		(129)		1,658
Commercial MBS	75		—		—		(1)		(1)		74
Collateralized loan obligations	1,709		3		9		(28)		(19)		1,687
Other asset-backed securities	2,477		5		10		(120)		(110)		2,362
Corporate and other	3,210		3		52		(113)		(61)		3,146
Total fixed maturities	$	10,752	$	12	$	107	$	(470)	$	(363)	$	10,377

Equity securities reported at fair value

Equity securities which are reported at fair value with holding gains and losses recognized in net earnings, consisted of the following at March 31, 2024 and December 31, 2023 (in millions):

	March 31, 2024						December 31, 2023
	Actual Cost		Fair Value		Fair Value Over Cost		Actual Cost		Fair Value		Fair Value Over Cost
Common stocks	$	531	$	629	$	98	$	512	$	586	$	74
Perpetual preferred stocks	385		411		26		422		432		10
Total equity securities carried at fair value	$	916	$	1,040	$	124	$	934	$	1,018	$	84

Investments accounted for using the equity method

The following table shows the carrying value and net investment income from investments accounted for using the equity method (in millions):

					Net Investment Income
	Carrying Value				Three months ended March 31,
	March 31, 2024		December 31, 2023		2024		2023
Real estate-related investments (*)	$	1,309	$	1,320	$	(6)	$	47
Private equity	500		457		30		8
Private debt	39		37		1		2
Total investments accounted for using the equity method	$	1,848	$	1,814	$	25	$	57

(*)91% and 92% of the carrying value relates to underlying investments in multi-family properties as of March 31, 2024 and December 31, 2023, respectively.

Gross unrealized losses on securities by investment category and length of time that have been in a continuous unrealized loss position

The following table shows gross unrealized losses (dollars in millions) on available for sale fixed maturities by investment category and length of time that individual securities have been in a continuous unrealized loss position at the following balance sheet dates.

	Less Than Twelve Months						Twelve Months or More
	Unrealized Loss		Fair Value		Fair Value as % of Cost		Unrealized Loss		Fair Value		Fair Value as % of Cost
March 31, 2024
Fixed maturities:
U.S. government and government agencies	$	—	$	27	100	%	$	(7)	$	150	96	%
States, municipalities and political subdivisions	(2)		184		99	%	(43)		529		92	%
Foreign government	—		17		100	%	(5)		206		98	%
Residential MBS	(1)		127		99	%	(155)		1,017		87	%
Commercial MBS	—		—		—	%	—		42		100	%
Collateralized loan obligations	—		70		100	%	(22)		456		95	%
Other asset-backed securities	(1)		103		99	%	(101)		1,591		94	%
Corporate and other	(5)		408		99	%	(106)		1,416		93	%
Total fixed maturities	$	(9)	$	936	99	%	$	(439)	$	5,407	92	%
December 31, 2023
Fixed maturities:
U.S. government and government agencies	$	—	$	11	100	%	$	(8)	$	191	96	%
States, municipalities and political subdivisions	(1)		76		99	%	(37)		526		93	%
Foreign government	—		—		—	%	(7)		207		97	%
Residential MBS	(1)		42		98	%	(154)		1,089		88	%
Commercial MBS	—		—		—	%	(1)		61		98	%
Collateralized loan obligations	—		25		100	%	(28)		807		97	%
Other asset-backed securities	(1)		151		99	%	(119)		1,663		93	%
Corporate and other	(4)		123		97	%	(109)		1,455		93	%
Total fixed maturities	$	(7)	$	428	98	%	$	(463)	$	5,999	93	%

Roll forward of allowance for credit losses on fixed maturity securities

A progression of the allowance for expected credit losses on available for sale fixed maturity securities is shown below (in millions):

	Structured Securities (*)		Corporate and Other		Total
Balance at December 31, 2023	$	9	$	3	$	12
Provision for expected credit losses on securities with no previous allowance	1		—		1
Additions to previously recognized expected credit losses	1		—		1
Reductions due to sales or redemptions	—		(3)		(3)
Balance at March 31, 2024	$	11	$	—	$	11
Balance at December 31, 2022	$	10	$	1	$	11
Provision for expected credit losses on securities with no previous allowance	1		5		6
Reductions to previously recognized expected credit losses	—		(1)		(1)
Reductions due to sales or redemptions	—		—		—
Balance at March 31, 2023	$	11	$	5	$	16

(*)Includes mortgage-backed securities, collateralized loan obligations and other asset-backed securities.

Available for sale fixed maturity securities by contractual maturity date

The table below sets forth the scheduled maturities of AFG’s available for sale fixed maturities as of March 31, 2024 (dollars in millions). Securities with sinking funds are reported at average maturity. Actual maturities may differ from contractual maturities because certain securities may be called or prepaid by the issuers.

	Amortized		Fair Value
	Cost, net (*)		Amount		%
Maturity
One year or less	$	462	$	457	4	%
After one year through five years	2,409		2,344		23	%
After five years through ten years	1,279		1,264		12	%
After ten years	631		593		6	%
	4,781		4,658		45	%
Collateralized loan obligations and other ABS (average life of approximately 3 years)	4,065		3,967		38	%
MBS (average life of approximately 6.5 years)	1,877		1,746		17	%
Total	$	10,723	$	10,371	100	%

(*)Amortized cost, net of allowance for expected credit losses.

Net investment income earned and investment expenses incurred

The following table shows (in millions) investment income earned and investment expenses incurred.

	Three months ended March 31,
	2024		2023
Investment income:
Fixed maturities:
Interest and amortization	$	134	$	119
Change in fair value (a)	—		3
Equity securities:
Dividends	7		9
Change in fair value (b)	16		16
Equity in earnings of partnerships and similar investments	25		57
Other	22		18
Gross investment income	204		222
Investment expenses	(6)		(5)
Net investment income	$	198	$	217

(a)The change in the fair value of fixed maturities classified as trading and derivatives embedded in convertible fixed maturities related to limited partnerships and similar investments.

(b)Although the change in the fair value of the majority of AFG’s equity securities is recorded in realized gains (losses) on securities, AFG records holding gains and losses on limited partnerships and similar investments that do not qualify for equity method accounting and related equity investments in net investment income.

Realized gains (losses) and changes in unrealized appreciation (depreciation) related to fixed maturity and equity security investments

Realized gains (losses) and changes in unrealized appreciation (depreciation) included in AOCI related to fixed maturity securities are summarized as follows (in millions):

	Three months ended March 31, 2024								Three months ended March 31, 2023
	Realized gains (losses)								Realized gains (losses)
	Before Impairments		Impairment Allowance		Total		Change in Unrealized		Before Impairments		Impairment Allowance		Total		Change in Unrealized
Fixed maturities	$	(4)	$	(2)	$	(6)	$	11	$	(23)	$	(5)	$	(28)	$	107
Equity securities	20		—		20		—		(18)		—		(18)		—
Mortgage loans and other investments	—		—		—		—		—		—		—		—
Total pretax	16		(2)		14		11		(41)		(5)		(46)		107
Tax effects	(3)		—		(3)		(2)		8		1		9		(23)
Net of tax	$	13	$	(2)	$	11	$	9	$	(33)	$	(4)	$	(37)	$	84

Holding gains (losses) on equity securities still held

AFG recorded net holding gains (losses) on equity securities during the first quarter and first three months of 2024 and 2023 on securities that were still owned at March 31, 2024 and March 31, 2023 as follows (in millions):

	Three months ended March 31,
	2024		2023
Included in realized gains (losses)	$	19	$	(23)
Included in net investment income	16		16
	$	35	$	(7)

Gross realized gains and losses on available for sale fixed maturity and equity security investments

Gross realized gains and losses (excluding changes in impairment allowance and mark-to-market of derivatives) on available for sale fixed maturity investment transactions consisted of the following (in millions):

	Three months ended March 31,
	2024		2023
Gross gains	$	—	$	1
Gross losses	(3)		(25)

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Derivatives (Tables)

3 Months Ended

Mar. 31, 2024

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivatives included in the Balance Sheet at fair value

The following table presents the classification of derivative assets and liabilities included in AFG’s Balance Sheet at fair value (in millions):

		March 31, 2024				December 31, 2023
	Balance Sheet Line	Asset		Liability		Asset		Liability
Derivatives designated and qualifying as cash flow hedges:
Interest rate swaps	Other assets/Other liabilities	$	—	$	28	$	1	$	22
Derivatives not designated as hedging instruments:
Fixed maturities with embedded derivatives	Fixed maturities	77		—		81		—
Total return swap	Other assets/Other liabilities	3		—		5		—
		$	80	$	28	$	87	$	22

Summary of gain (loss) included in the Statement of Earnings for changes in the fair value of derivatives

The following table summarizes the gains (losses) included in AFG’s Statement of Earnings for changes in the fair value of derivatives for the three months ended March 31, 2024 and 2023 (in millions):

		Three months ended March 31,
	Statement of Earnings Line	2024		2023
Qualifying cash flow hedges - gains (losses) reclassified from AOCI to net earnings:
Interest rate swaps	Net investment income	$	(7)	$	(5)
Non-designated hedges - gains (losses) included in net earnings:
Fixed maturities with embedded derivatives	Realized gains (losses) on securities	(1)		1
Fixed maturities with embedded derivatives	Net investment income	—		3
Total return swap	Other expenses	6		6
Earnings (losses) on non-designated hedges		5		10
Total earnings (losses) on derivatives		$	(2)	$	5

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Managed Investment Entities (Tables)

3 Months Ended

Mar. 31, 2024

Variable Interest Entity, Primary Beneficiary, Does Not Hold Majority Voting Interest, Disclosures [Abstract]

Selected financial information related to collateralized loan obligations

The following table shows a progression of the fair value of AFG's investment in CLO tranches (in millions):

	Three months ended March 31,
	2024		2023
Balance at beginning of period	$	137	$	112
Purchases	28		11
Sales	—		—
Distributions	(9)		(5)
Change in fair value	13		1
Balance at end of period (*)	$	169	$	119

(*)Excludes $30 million and $13 million invested in a temporary warehousing entity at March 31, 2024 and March 31, 2023, respectively, that was established to provide AFG the ability to form a new CLO.

Selected financial information related to the CLOs is shown below (in millions):

	Three months ended March 31,
	2024		2023
Gains (losses) on change in fair value of assets/liabilities (*):
Assets	$	12	$	34
Liabilities	(2)		(38)
Management fees paid to AFG	3		4
CLO earnings attributable to AFG	14		1

(*)Included in revenues in AFG’s Statement of Earnings.

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Long-Term Debt (Tables)

3 Months Ended

Mar. 31, 2024

Debt Disclosure [Abstract]

Schedule of long-term debt instruments

Long-term debt consisted of the following (in millions):

	March 31, 2024						December 31, 2023
	Principal		Discount and Issue Costs		Carrying Value		Principal		Discount and Issue Costs		Carrying Value
Direct Senior Obligations of AFG:
4.50% Senior Notes due June 2047	$	567	$	(1)	$	566	$	567	$	(1)	$	566
5.25% Senior Notes due April 2030	253		(4)		249		253		(4)		249
Other	3		—		3		3		—		3
	823		(5)		818		823		(5)		818
Direct Subordinated Obligations of AFG:
4.50% Subordinated Debentures due September 2060	200		(5)		195		200		(5)		195
5.125% Subordinated Debentures due December 2059	200		(5)		195		200		(5)		195
5.625% Subordinated Debentures due June 2060	150		(4)		146		150		(4)		146
5.875% Subordinated Debentures due March 2059	125		(4)		121		125		(4)		121
	675		(18)		657		675		(18)		657
	$	1,498	$	(23)	$	1,475	$	1,498	$	(23)	$	1,475

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Shareholders' Equity (Tables)

3 Months Ended

Mar. 31, 2024

Stockholders' Equity Note [Abstract]

Components of accumulated other comprehensive income (loss)

The progression of the components of accumulated other comprehensive income (loss) follows (in millions):

			Other Comprehensive Income (Loss)
	AOCI Beginning Balance		Pretax		Tax		Net of tax		AOCI Ending Balance
Three months ended March 31, 2024
Net unrealized gains (losses) on securities:
Unrealized holding gains (losses) on securities arising during the period			$	6	$	(1)	$	5
Reclassification adjustment for realized (gains) losses included in net earnings (*)			5		(1)		4
Total net unrealized gains (losses) on securities	$	(287)	11		(2)		9		$	(278)
Net unrealized gains (losses) on cash flow hedges:
Unrealized holding gains (losses) on cash flow hedges arising during the period			(13)		3		(10)
Reclassification adjustment for investment income included in net earnings (*)			7		(2)		5
Total net unrealized gains (losses) on cash flow hedges	(17)		(6)		1		(5)		(22)
Foreign currency translation adjustments	(17)		—		—		—		(17)
Pension and other postretirement plan adjustments	2		—		—		—		2
Total	$	(319)	$	5	$	(1)	$	4	$	(315)
Three months ended March 31, 2023
Net unrealized gains (losses) on securities:
Unrealized holding gains (losses) on securities arising during the period			$	78	$	(17)	$	61
Reclassification adjustment for realized (gains) losses included in net earnings (*)			29		(6)		23
Total net unrealized gains (losses) on securities	$	(497)	107		(23)		84		$	(413)
Net unrealized gains (losses) on cash flow hedges:
Unrealized holding gains (losses) on cash flow hedges arising during the period			5		(1)		4
Reclassification adjustment for investment income included in net earnings (*)			5		(1)		4
Total net unrealized gains (losses) on cash flow hedges	(29)		10		(2)		8		(21)
Foreign currency translation adjustments	(20)		—		—		—		(20)
Pension and other postretirement plan adjustments	3		—		—		—		3
Total	$	(543)	$	117	$	(25)	$	92	$	(451)

(*)The reclassification adjustments affected the following lines in AFG’s Statement of Earnings:

OCI component	Affected line in the statement of earnings
Pretax - Net unrealized gains (losses) on securities	Realized gains (losses) on securities
Pretax - Net unrealized gains (losses) on cash flow hedges	Net investment income
Tax	Provision for income taxes

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Income Taxes (Tables)

3 Months Ended

Mar. 31, 2024

Income Tax Disclosure [Abstract]

Reconciliation of income taxes at the statutory rate and income taxes shown in the Statement of Earnings

The following is a reconciliation of income taxes at the statutory rate of 21% to the provision for income taxes as shown in AFG’s Statement of Earnings (dollars in millions):

	Three months ended March 31,
	2024				2023
	Amount		% of EBT		Amount		% of EBT
Earnings before income taxes (“EBT”)	$	304			$	264
Income taxes at statutory rate	$	64	21	%	$	55	21	%
Effect of:
Employee stock ownership plan dividend paid deduction	(2)		(1	%)	(3)		(1	%)
Stock-based compensation	(2)		(1	%)	(2)		(1	%)
Tax exempt interest	(1)		—	%	(1)		—	%
Dividends received deduction	—		—	%	(1)		—	%
Nondeductible expenses	2		1	%	3		1	%
Foreign operations	—		—	%	2		1	%
Other	1		—	%	(1)		(1	%)
Provision for income taxes as shown in the statement of earnings	$	62	20	%	$	52	20	%

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Insurance (Tables)

3 Months Ended

Mar. 31, 2024

Insurance [Abstract]

Reconciliation of beginning and ending liability for unpaid losses and loss adjustment expenses

The following table provides an analysis of changes in the liability for losses and loss adjustment expenses during the first three months of 2024 and 2023 (in millions):

	Three months ended March 31,
	2024		2023
Balance at beginning of year	$	13,087	$	11,974
Less reinsurance recoverables, net of allowance	4,288		3,767
Net liability at beginning of year	8,799		8,207
Provision for losses and LAE occurring in the current period	962		883
Net decrease in the provision for claims of prior years	(50)		(63)
Total losses and LAE incurred	912		820
Payments for losses and LAE of:
Current year	(94)		(66)
Prior years	(895)		(815)
Total payments	(989)		(881)
Foreign currency translation and other	1		1
Net liability at end of period	8,723		8,147
Add back reinsurance recoverables, net of allowance	4,327		3,614
Gross unpaid losses and LAE included in the balance sheet at end of period	$	13,050	$	11,761

Reinsurance recoverable and premiums receivable, allowance for credit loss

Progressions of the 2024 and 2023 allowance for expected credit losses on recoverables from reinsurers and premiums receivable are shown below (in millions):

	Recoverables from Reinsurers				Premiums Receivable
	2024		2023		2024		2023
Balance at December 31	$	10	$	8	$	15	$	8
Provision (credit) for expected credit losses	—		1		—		—
Write-offs charged against the allowance	—		—		—		—
Balance at March 31	$	10	$	9	$	15	$	8

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Accounting Policies - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Significant Accounting Policies [Line Items]
Assets of managed investment entities	$ 4,669		$ 4,484
Liabilities of managed investment entities	4,468		4,307
Operating lease liability	$ 204		$ 198
Operating lease liability, current, Statement of Financial Position	Other Liabilities		Other Liabilities
Operating lease right-of-use asset	$ 181		$ 176
Operating lease, right-of-use asset, Statement of Financial Position	Other Assets		Other Assets
Weighted average common shares adjustment related to stock-based compensation (shares)	100,000	200,000
Anti-dilutive potential common shares related to stock-based compensation plans (shares)	0	0
Maturities of short term investments	3 months
New collateralized loan obligation temporary warehousing entities
Significant Accounting Policies [Line Items]
Assets of managed investment entities	$ 164
Liabilities of managed investment entities	$ 134

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Acquisition of Businesses - Narrative (Details) - Crop Risk Services - USD ($) $ in Millions	Jul. 03, 2023	Mar. 31, 2024
Business Acquisition [Line Items]
Payments to acquire subsidiaries	$ 234
Net tangible assets acquired, at fair value	24
Acquisition expenses incurred	3
Goodwill recorded	85
Amount of goodwill expected to be tax deductible	79
Customer relationships
Business Acquisition [Line Items]
Intangible assets acquired	124
Finite-lived intangible assets useful life		14 years
Crop year 2022
Business Acquisition [Line Items]
Gross written premiums	$ 1,200

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Acquisition of Businesses - Allocation of purchase price of subsidiary (Details) - Crop Risk Services $ in Millions	Jul. 03, 2023 USD ($)
Business Acquisition [Line Items]
Payments to acquire subsidiaries	$ 234
Tangible assets acquired:
Cash and cash equivalents	26
Agents’ balances and premiums receivable	164
Other assets	3
Total tangible assets acquired	193
Liabilities acquired:
Other liabilities	169
Total liabilities acquired	169
Net tangible assets acquired, at fair value	24
Excess purchase price over net tangible assets acquired	210
Deferred tax asset acquired	1
Goodwill recorded	85
Customer relationships
Liabilities acquired:
Intangible assets acquired	$ 124

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Segments of Operations - Narrative (Details) $ in Millions	3 Months Ended
	Mar. 31, 2024 segment	Mar. 31, 2023 USD ($)
Segment Reporting [Abstract]
Number of segments | segment	2
Other | Operating Segments
Segment Reporting Information [Line Items]
Loss on retirement of debt | $		$ 2

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Segments of Operations - Revenues by segment and sub-segment (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Segment Reporting Information [Line Items]
Total premiums earned	$ 1,546	$ 1,437
Net investment income	198	217
Other income	39	32
Revenues before realized gains (losses)	1,892	1,786
Realized gains (losses) on securities	14	(46)
Total revenues	1,906	1,740
Operating Segments | Property and Casualty Insurance
Segment Reporting Information [Line Items]
Total premiums earned	1,546	1,437
Net investment income	205	207
Other income	2	5
Revenues before realized gains (losses)	1,753	1,649
Operating Segments | Property and Casualty Insurance | Property and transportation
Segment Reporting Information [Line Items]
Total premiums earned	513	475
Operating Segments | Property and Casualty Insurance | Specialty casualty
Segment Reporting Information [Line Items]
Total premiums earned	730	704
Operating Segments | Property and Casualty Insurance | Specialty financial
Segment Reporting Information [Line Items]
Total premiums earned	243	196
Operating Segments | Property and Casualty Insurance | Other specialty
Segment Reporting Information [Line Items]
Total premiums earned	60	62
Operating Segments | Other
Segment Reporting Information [Line Items]
Revenues before realized gains (losses)	$ 139	$ 137

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Segments of Operations - Earnings before income taxes by segment and sub-segment (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Segment Reporting Information [Line Items]
Earnings before realized gains (losses) and income taxes	$ 290	$ 310
Realized gains (losses) on securities	14	(46)
Earnings before income taxes	304	264
Operating Segments | Property and Casualty Insurance
Segment Reporting Information [Line Items]
Property and casualty insurance underwriting	153	154
Investment and other income, net	187	196
Earnings before realized gains (losses) and income taxes	340	350
Operating Segments | Property and Casualty Insurance | Property and transportation
Segment Reporting Information [Line Items]
Property and casualty insurance underwriting	56	43
Operating Segments | Property and Casualty Insurance | Specialty casualty
Segment Reporting Information [Line Items]
Property and casualty insurance underwriting	74	88
Operating Segments | Property and Casualty Insurance | Specialty financial
Segment Reporting Information [Line Items]
Property and casualty insurance underwriting	33	26
Operating Segments | Property and Casualty Insurance | Other specialty
Segment Reporting Information [Line Items]
Property and casualty insurance underwriting	(9)	(2)
Operating Segments | Property and Casualty Insurance | Other lines
Segment Reporting Information [Line Items]
Property and casualty insurance underwriting	(1)	(1)
Operating Segments | Other
Segment Reporting Information [Line Items]
Earnings before realized gains (losses) and income taxes	$ (50)	$ (40)

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Fair Value Measurements - Narrative (Details) $ in Millions	Mar. 31, 2024 USD ($) professional
Fair Value Disclosures [Abstract]
AFG's internal investment professionals | professional	20
Level 3 assets as a percentage of total assets measured at fair value	8.00%
Percentage of level 3 assets that were priced using non-binding broker quotes	8.00%
Level 3 assets that were priced using non-binding broker quotes	$ 109
Percentage of level 3 assets that were priced by pricing services	1.00%
Level 3 assets that were priced by pricing services.	$ 10
Percentage of level 3 equity investments that do not qualify for equity accounting	31.00%
Level 3 assets that are equity securities that do not qualify for equity accounting	$ 397
Percentage of internally developed level 3 assets compared to total level 3 assets	60.00%
Internally developed level 3 assets	$ 781
Percentage of level three assets that were priced using a discounted cash flow approach	73.00%
Level three assets that were priced using a discounted cash flow approach	$ 566
Percentage of level three assets, equity securities, priced using broker quotes and internal models	18.00%
Level three assets, equity securities, priced using broker quotes and internal models	$ 144

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Fair Value Measurements - Assets and liabilities measured and carried at fair value in the financial statements (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Assets:
Available for sale (AFS) fixed maturities	$ 10,371	$ 10,377
Trading fixed maturities	57	57
Equity securities	1,040	1,018
Assets of managed investment entities	4,669	4,484
Other assets	80	87
Total assets accounted for at fair value	16,140	15,942
Liabilities:
Liabilities of managed investment entities	4,468	4,307
Derivative liability	28	22
Total liabilities accounted for at fair value	4,498	4,331
Contingent consideration — acquisitions
Liabilities:
Fair value of potential contingent consideration	2	2
Other liabilities — derivatives
Liabilities:
Derivative liability	28	22
Fixed maturities:
Assets:
Available for sale (AFS) fixed maturities	10,371	10,377
Trading fixed maturities	57	57
U.S. government and government agencies
Assets:
Available for sale (AFS) fixed maturities	199	236
States, municipalities and political subdivisions
Assets:
Available for sale (AFS) fixed maturities	910	984
Foreign government
Assets:
Available for sale (AFS) fixed maturities	235	230
Residential MBS
Assets:
Available for sale (AFS) fixed maturities	1,674	1,658
Commercial MBS
Assets:
Available for sale (AFS) fixed maturities	72	74
Collateralized loan obligations
Assets:
Available for sale (AFS) fixed maturities	1,593	1,687
Other asset-backed securities
Assets:
Available for sale (AFS) fixed maturities	2,374	2,362
Corporate and other
Assets:
Available for sale (AFS) fixed maturities	3,314	3,146
Equity securities
Assets:
Equity securities	1,040	1,018
Other assets
Assets:
Other assets	3	6
Level 1
Assets:
Assets of managed investment entities	430	335
Total assets accounted for at fair value	1,100	1,079
Liabilities:
Liabilities of managed investment entities	411	322
Total liabilities accounted for at fair value	411	322
Level 1 | Contingent consideration — acquisitions
Liabilities:
Fair value of potential contingent consideration	0	0
Level 1 | Other liabilities — derivatives
Liabilities:
Derivative liability	0	0
Level 1 | Fixed maturities:
Assets:
Available for sale (AFS) fixed maturities	209	244
Trading fixed maturities	0	0
Level 1 | U.S. government and government agencies
Assets:
Available for sale (AFS) fixed maturities	198	235
Level 1 | States, municipalities and political subdivisions
Assets:
Available for sale (AFS) fixed maturities	0	0
Level 1 | Foreign government
Assets:
Available for sale (AFS) fixed maturities	0	0
Level 1 | Residential MBS
Assets:
Available for sale (AFS) fixed maturities	0	0
Level 1 | Commercial MBS
Assets:
Available for sale (AFS) fixed maturities	0	0
Level 1 | Collateralized loan obligations
Assets:
Available for sale (AFS) fixed maturities	0	0
Level 1 | Other asset-backed securities
Assets:
Available for sale (AFS) fixed maturities	0	0
Level 1 | Corporate and other
Assets:
Available for sale (AFS) fixed maturities	11	9
Level 1 | Equity securities
Assets:
Equity securities	461	500
Level 1 | Other assets
Assets:
Other assets	0	0
Level 2
Assets:
Assets of managed investment entities	4,229	4,140
Total assets accounted for at fair value	13,743	13,633
Liabilities:
Liabilities of managed investment entities	4,047	3,976
Total liabilities accounted for at fair value	4,075	3,998
Level 2 | Contingent consideration — acquisitions
Liabilities:
Fair value of potential contingent consideration	0	0
Level 2 | Other liabilities — derivatives
Liabilities:
Derivative liability	28	22
Level 2 | Fixed maturities:
Assets:
Available for sale (AFS) fixed maturities	9,420	9,397
Trading fixed maturities	57	57
Level 2 | U.S. government and government agencies
Assets:
Available for sale (AFS) fixed maturities	1	1
Level 2 | States, municipalities and political subdivisions
Assets:
Available for sale (AFS) fixed maturities	908	982
Level 2 | Foreign government
Assets:
Available for sale (AFS) fixed maturities	235	230
Level 2 | Residential MBS
Assets:
Available for sale (AFS) fixed maturities	1,672	1,656
Level 2 | Commercial MBS
Assets:
Available for sale (AFS) fixed maturities	72	74
Level 2 | Collateralized loan obligations
Assets:
Available for sale (AFS) fixed maturities	1,592	1,686
Level 2 | Other asset-backed securities
Assets:
Available for sale (AFS) fixed maturities	2,039	2,011
Level 2 | Corporate and other
Assets:
Available for sale (AFS) fixed maturities	2,901	2,757
Level 2 | Equity securities
Assets:
Equity securities	34	33
Level 2 | Other assets
Assets:
Other assets	3	6
Level 3
Assets:
Assets of managed investment entities	10	9
Total assets accounted for at fair value	1,297	1,230
Liabilities:
Liabilities of managed investment entities	10	9
Total liabilities accounted for at fair value	12	11
Level 3 | Contingent consideration — acquisitions
Liabilities:
Fair value of potential contingent consideration	2	2
Level 3 | Other liabilities — derivatives
Liabilities:
Derivative liability	0	0
Level 3 | Fixed maturities:
Assets:
Available for sale (AFS) fixed maturities	742	736
Trading fixed maturities	0	0
Level 3 | U.S. government and government agencies
Assets:
Available for sale (AFS) fixed maturities	0	0
Level 3 | States, municipalities and political subdivisions
Assets:
Available for sale (AFS) fixed maturities	2	2
Level 3 | Foreign government
Assets:
Available for sale (AFS) fixed maturities	0	0
Level 3 | Residential MBS
Assets:
Available for sale (AFS) fixed maturities	2	2
Level 3 | Commercial MBS
Assets:
Available for sale (AFS) fixed maturities	0	0
Level 3 | Collateralized loan obligations
Assets:
Available for sale (AFS) fixed maturities	1	1
Level 3 | Other asset-backed securities
Assets:
Available for sale (AFS) fixed maturities	335	351
Level 3 | Corporate and other
Assets:
Available for sale (AFS) fixed maturities	402	380
Level 3 | Equity securities
Assets:
Equity securities	545	485
Level 3 | Other assets
Assets:
Other assets	$ 0	$ 0

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Fair Value Measurements - Changes in balances of Level 3 financial assets carried at fair value (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Financial assets, Beginning Balance	$ 1,230	$ 1,102
Total realized/unrealized gains (losses) included in Net income	18	1
Total realized/unrealized gains (losses) included in other comprehensive income (loss)	0	6
Purchases and issuances	92	84
Sales and settlements	(13)	(41)
Transfer into Level 3	0	4
Transfer out of Level 3	(30)	(28)
Financial assets, Ending Balance	1,297	1,128
Fixed maturities:
Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Financial assets, Beginning Balance	736	664
Total realized/unrealized gains (losses) included in Net income	(1)	5
Total realized/unrealized gains (losses) included in other comprehensive income (loss)	0	6
Purchases and issuances	48	51
Sales and settlements	(11)	(19)
Transfer into Level 3	0	4
Transfer out of Level 3	(30)	(6)
Financial assets, Ending Balance	742	705
U.S. government agency
Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Financial assets, Beginning Balance	0	0
Total realized/unrealized gains (losses) included in Net income	0	0
Total realized/unrealized gains (losses) included in other comprehensive income (loss)	0	0
Purchases and issuances	0	0
Sales and settlements	0	0
Transfer into Level 3	0	0
Transfer out of Level 3	0	0
Financial assets, Ending Balance	0	0
State and municipal
Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Financial assets, Beginning Balance	2	5
Total realized/unrealized gains (losses) included in Net income	0	0
Total realized/unrealized gains (losses) included in other comprehensive income (loss)	0	0
Purchases and issuances	0	0
Sales and settlements	0	0
Transfer into Level 3	0	0
Transfer out of Level 3	0	0
Financial assets, Ending Balance	2	5
Residential MBS
Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Financial assets, Beginning Balance	2	9
Total realized/unrealized gains (losses) included in Net income	0	0
Total realized/unrealized gains (losses) included in other comprehensive income (loss)	0	0
Purchases and issuances	0	0
Sales and settlements	0	(3)
Transfer into Level 3	0	4
Transfer out of Level 3	0	(5)
Financial assets, Ending Balance	2	5
Commercial MBS
Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Financial assets, Beginning Balance	0	0
Total realized/unrealized gains (losses) included in Net income	0	0
Total realized/unrealized gains (losses) included in other comprehensive income (loss)	0	0
Purchases and issuances	0	0
Sales and settlements	0	0
Transfer into Level 3	0	0
Transfer out of Level 3	0	0
Financial assets, Ending Balance	0	0
Collateralized loan obligations
Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Financial assets, Beginning Balance	1	2
Total realized/unrealized gains (losses) included in Net income	0	0
Total realized/unrealized gains (losses) included in other comprehensive income (loss)	0	0
Purchases and issuances	0	0
Sales and settlements	0	0
Transfer into Level 3	0	0
Transfer out of Level 3	0	(1)
Financial assets, Ending Balance	1	1
Other asset-backed securities
Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Financial assets, Beginning Balance	351	329
Total realized/unrealized gains (losses) included in Net income	0	0
Total realized/unrealized gains (losses) included in other comprehensive income (loss)	0	4
Purchases and issuances	15	7
Sales and settlements	(5)	(5)
Transfer into Level 3	0	0
Transfer out of Level 3	(26)	0
Financial assets, Ending Balance	335	335
Corporate and other
Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Financial assets, Beginning Balance	380	319
Total realized/unrealized gains (losses) included in Net income	(1)	5
Total realized/unrealized gains (losses) included in other comprehensive income (loss)	0	2
Purchases and issuances	33	44
Sales and settlements	(6)	(11)
Transfer into Level 3	0	0
Transfer out of Level 3	(4)	0
Financial assets, Ending Balance	402	359
Equity securities
Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Financial assets, Beginning Balance	485	427
Total realized/unrealized gains (losses) included in Net income	20	(3)
Total realized/unrealized gains (losses) included in other comprehensive income (loss)	0	0
Purchases and issuances	42	31
Sales and settlements	(2)	(22)
Transfer into Level 3	0	0
Transfer out of Level 3	0	(22)
Financial assets, Ending Balance	545	411
Assets of MIE
Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Financial assets, Beginning Balance	9	11
Total realized/unrealized gains (losses) included in Net income	(1)	(1)
Total realized/unrealized gains (losses) included in other comprehensive income (loss)	0	0
Purchases and issuances	2	2
Sales and settlements	0	0
Transfer into Level 3	0	0
Transfer out of Level 3	0	0
Financial assets, Ending Balance	$ 10	$ 12

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Fair Value Measurements - Changes in balances of Level 3 financial liabilities carried at fair value (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Financial liabilities, Beginning Balance	$ (2)	$ (25)
Total realized/unrealized gains (losses) included in Net income	0	0
Total realized/unrealized gains (losses) included in other comprehensive income (loss)	0	0
Purchases and issuances	0	0
Sales and settlements	0	0
Transfer into Level 3	0	0
Transfer out of Level 3	0	0
Financial liabilities, Ending Balance	(2)	(25)
Contingent consideration — acquisitions
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Financial liabilities, Beginning Balance	(2)	(25)
Total realized/unrealized gains (losses) included in Net income	0	0
Total realized/unrealized gains (losses) included in other comprehensive income (loss)	0	0
Purchases and issuances	0	0
Sales and settlements	0	0
Transfer into Level 3	0	0
Transfer out of Level 3	0	0
Financial liabilities, Ending Balance	$ (2)	$ (25)

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Fair Value Measurements - The carrying value and fair value of financial instruments (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Financial assets:
Mortgage loans	$ 722	$ 643
Long-term debt	1,475	1,475
Level 1
Financial assets:
Cash and cash equivalents	1,087	1,225
Mortgage loans	0	0
Total financial assets not accounted for at fair value	1,087	1,225
Long-term debt	0	0
Total financial liabilities not accounted for at fair value	0	0
Level 2
Financial assets:
Cash and cash equivalents	0	0
Mortgage loans	0	0
Total financial assets not accounted for at fair value	0	0
Long-term debt	1,355	1,342
Total financial liabilities not accounted for at fair value	1,355	1,342
Level 3
Financial assets:
Cash and cash equivalents	0	0
Mortgage loans	671	596
Total financial assets not accounted for at fair value	671	596
Long-term debt	3	3
Total financial liabilities not accounted for at fair value	3	3
Carrying Value
Financial assets:
Cash and cash equivalents	1,087	1,225
Mortgage loans	722	643
Total financial assets not accounted for at fair value	1,809	1,868
Long-term debt	1,475	1,475
Total financial liabilities not accounted for at fair value	1,475	1,475
Fair Value
Financial assets:
Cash and cash equivalents	1,087	1,225
Mortgage loans	671	596
Total financial assets not accounted for at fair value	1,758	1,821
Long-term debt	1,358	1,345
Total financial liabilities not accounted for at fair value	$ 1,358	$ 1,345

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Investments - Narrative (Details) $ in Millions	Mar. 31, 2024 USD ($) security	Dec. 31, 2023 USD ($)
Schedule of Investments [Line Items]
Unfunded commitments to limited partnerships	$ 443	$ 418
Percentage (based on amount of unrealized loss) of available for sale fixed maturities that are in an unrealized loss position and rated investment grade	95.00%
Percentage (based on fair value) of available for sale fixed maturities that are in an unrealized loss position and rated investment grade	95.00%
Multifamily
Schedule of Investments [Line Items]
Percent of real-estate related investments by property type	91.00%	92.00%
Fixed maturities:
Schedule of Investments [Line Items]
Gross unrealized losses on fixed maturities	$ 448	$ 470
Number of fixed maturity securities in an unrealized loss position | security	1,450

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Investments - Available for sale fixed maturities (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023	Dec. 31, 2022
Debt Securities, Available-for-sale [Line Items]
Fixed maturities, available for sale, amortized cost	$ 10,734	$ 10,752
Fixed maturities, available for sale, allowance for expected credit losses	11	12	$ 16	$ 11
Available for sale (AFS) fixed maturities	10,371	10,377
Total fixed maturities
Debt Securities, Available-for-sale [Line Items]
Fixed maturities, available for sale, amortized cost	10,734	10,752
Fixed maturities, available for sale, allowance for expected credit losses	11	12
Fixed maturities, available for sale, gross unrealized, gains	96	107
Fixed maturities, available for sale, gross unrealized, losses	(448)	(470)
Fixed maturities, available-for-sale securities, accumulated gross unrealized gain (loss), before tax	(352)	(363)
Available for sale (AFS) fixed maturities	10,371	10,377
U.S. government and government agencies
Debt Securities, Available-for-sale [Line Items]
Fixed maturities, available for sale, amortized cost	206	243
Fixed maturities, available for sale, allowance for expected credit losses	0	0
Fixed maturities, available for sale, gross unrealized, gains	0	1
Fixed maturities, available for sale, gross unrealized, losses	(7)	(8)
Fixed maturities, available-for-sale securities, accumulated gross unrealized gain (loss), before tax	(7)	(7)
Available for sale (AFS) fixed maturities	199	236
States, municipalities and political subdivisions
Debt Securities, Available-for-sale [Line Items]
Fixed maturities, available for sale, amortized cost	949	1,014
Fixed maturities, available for sale, allowance for expected credit losses	0	0
Fixed maturities, available for sale, gross unrealized, gains	6	8
Fixed maturities, available for sale, gross unrealized, losses	(45)	(38)
Fixed maturities, available-for-sale securities, accumulated gross unrealized gain (loss), before tax	(39)	(30)
Available for sale (AFS) fixed maturities	910	984
Foreign government
Debt Securities, Available-for-sale [Line Items]
Fixed maturities, available for sale, amortized cost	240	236
Fixed maturities, available for sale, allowance for expected credit losses	0	0
Fixed maturities, available for sale, gross unrealized, gains	0	1
Fixed maturities, available for sale, gross unrealized, losses	(5)	(7)
Fixed maturities, available-for-sale securities, accumulated gross unrealized gain (loss), before tax	(5)	(6)
Available for sale (AFS) fixed maturities	235	230
Residential MBS
Debt Securities, Available-for-sale [Line Items]
Fixed maturities, available for sale, amortized cost	1,807	1,788
Fixed maturities, available for sale, allowance for expected credit losses	2	1
Fixed maturities, available for sale, gross unrealized, gains	25	26
Fixed maturities, available for sale, gross unrealized, losses	(156)	(155)
Fixed maturities, available-for-sale securities, accumulated gross unrealized gain (loss), before tax	(131)	(129)
Available for sale (AFS) fixed maturities	1,674	1,658
Commercial MBS
Debt Securities, Available-for-sale [Line Items]
Fixed maturities, available for sale, amortized cost	72	75
Fixed maturities, available for sale, allowance for expected credit losses	0	0
Fixed maturities, available for sale, gross unrealized, gains	0	0
Fixed maturities, available for sale, gross unrealized, losses	0	(1)
Fixed maturities, available-for-sale securities, accumulated gross unrealized gain (loss), before tax	0	(1)
Available for sale (AFS) fixed maturities	72	74
Collateralized loan obligations
Debt Securities, Available-for-sale [Line Items]
Fixed maturities, available for sale, amortized cost	1,605	1,709
Fixed maturities, available for sale, allowance for expected credit losses	3	3
Fixed maturities, available for sale, gross unrealized, gains	13	9
Fixed maturities, available for sale, gross unrealized, losses	(22)	(28)
Fixed maturities, available-for-sale securities, accumulated gross unrealized gain (loss), before tax	(9)	(19)
Available for sale (AFS) fixed maturities	1,593	1,687
Other asset-backed securities
Debt Securities, Available-for-sale [Line Items]
Fixed maturities, available for sale, amortized cost	2,469	2,477
Fixed maturities, available for sale, allowance for expected credit losses	6	5
Fixed maturities, available for sale, gross unrealized, gains	13	10
Fixed maturities, available for sale, gross unrealized, losses	(102)	(120)
Fixed maturities, available-for-sale securities, accumulated gross unrealized gain (loss), before tax	(89)	(110)
Available for sale (AFS) fixed maturities	2,374	2,362
Corporate and other
Debt Securities, Available-for-sale [Line Items]
Fixed maturities, available for sale, amortized cost	3,386	3,210
Fixed maturities, available for sale, allowance for expected credit losses	0	3	$ 5	$ 1
Fixed maturities, available for sale, gross unrealized, gains	39	52
Fixed maturities, available for sale, gross unrealized, losses	(111)	(113)
Fixed maturities, available-for-sale securities, accumulated gross unrealized gain (loss), before tax	(72)	(61)
Available for sale (AFS) fixed maturities	$ 3,314	$ 3,146

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Investments - Equity securities reported at fair value (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Debt and Equity Securities, FV-NI [Line Items]
Equity securities	$ 1,040	$ 1,018
Common stocks
Debt and Equity Securities, FV-NI [Line Items]
Equity securities, at cost	531	512
Equity securities	629	586
Equity securities, fair value in excess of cost	98	74
Perpetual preferred stocks
Debt and Equity Securities, FV-NI [Line Items]
Equity securities, at cost	385	422
Equity securities	411	432
Equity securities, fair value in excess of cost	26	10
Equity securities
Debt and Equity Securities, FV-NI [Line Items]
Equity securities, at cost	916	934
Equity securities	1,040	1,018
Equity securities, fair value in excess of cost	$ 124	$ 84

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Investments - Detail of equity method investments (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Schedule of Investments [Line Items]
Investments accounted for using the equity method	$ 1,848		$ 1,814
Equity in earnings of partnerships and similar investments	25	$ 57
Real estate-related investments
Schedule of Investments [Line Items]
Investments accounted for using the equity method	1,309		1,320
Equity in earnings of partnerships and similar investments	(6)	47
Private equity
Schedule of Investments [Line Items]
Investments accounted for using the equity method	500		457
Equity in earnings of partnerships and similar investments	30	8
Private debt
Schedule of Investments [Line Items]
Investments accounted for using the equity method	39		$ 37
Equity in earnings of partnerships and similar investments	$ 1	$ 2

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Investments - Gross unrealized losses on securities by investment category and length of time that have been in a continuous unrealized loss position (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Total fixed maturities
Available for sale securities in a continuous unrealized loss position
Unrealized loss - less than twelve months	$ (9)	$ (7)
Fair value - less than twelve months	$ 936	$ 428
Fair value as percentage of cost - Less than twelve months	99.00%	98.00%
Unrealized Loss - Twelve months or more	$ (439)	$ (463)
Fair Value - Twelve months or more	$ 5,407	$ 5,999
Fair value as percentage of cost - Twelve months or more	92.00%	93.00%
U.S. government and government agencies
Available for sale securities in a continuous unrealized loss position
Unrealized loss - less than twelve months	$ 0	$ 0
Fair value - less than twelve months	$ 27	$ 11
Fair value as percentage of cost - Less than twelve months	100.00%	100.00%
Unrealized Loss - Twelve months or more	$ (7)	$ (8)
Fair Value - Twelve months or more	$ 150	$ 191
Fair value as percentage of cost - Twelve months or more	96.00%	96.00%
States, municipalities and political subdivisions
Available for sale securities in a continuous unrealized loss position
Unrealized loss - less than twelve months	$ (2)	$ (1)
Fair value - less than twelve months	$ 184	$ 76
Fair value as percentage of cost - Less than twelve months	99.00%	99.00%
Unrealized Loss - Twelve months or more	$ (43)	$ (37)
Fair Value - Twelve months or more	$ 529	$ 526
Fair value as percentage of cost - Twelve months or more	92.00%	93.00%
Foreign government
Available for sale securities in a continuous unrealized loss position
Unrealized loss - less than twelve months	$ 0	$ 0
Fair value - less than twelve months	$ 17	$ 0
Fair value as percentage of cost - Less than twelve months	100.00%	0.00%
Unrealized Loss - Twelve months or more	$ (5)	$ (7)
Fair Value - Twelve months or more	$ 206	$ 207
Fair value as percentage of cost - Twelve months or more	98.00%	97.00%
Residential MBS
Available for sale securities in a continuous unrealized loss position
Unrealized loss - less than twelve months	$ (1)	$ (1)
Fair value - less than twelve months	$ 127	$ 42
Fair value as percentage of cost - Less than twelve months	99.00%	98.00%
Unrealized Loss - Twelve months or more	$ (155)	$ (154)
Fair Value - Twelve months or more	$ 1,017	$ 1,089
Fair value as percentage of cost - Twelve months or more	87.00%	88.00%
Commercial MBS
Available for sale securities in a continuous unrealized loss position
Unrealized loss - less than twelve months	$ 0	$ 0
Fair value - less than twelve months	$ 0	$ 0
Fair value as percentage of cost - Less than twelve months	0.00%	0.00%
Unrealized Loss - Twelve months or more	$ 0	$ (1)
Fair Value - Twelve months or more	$ 42	$ 61
Fair value as percentage of cost - Twelve months or more	100.00%	98.00%
Collateralized loan obligations
Available for sale securities in a continuous unrealized loss position
Unrealized loss - less than twelve months	$ 0	$ 0
Fair value - less than twelve months	$ 70	$ 25
Fair value as percentage of cost - Less than twelve months	100.00%	100.00%
Unrealized Loss - Twelve months or more	$ (22)	$ (28)
Fair Value - Twelve months or more	$ 456	$ 807
Fair value as percentage of cost - Twelve months or more	95.00%	97.00%
Other asset-backed securities
Available for sale securities in a continuous unrealized loss position
Unrealized loss - less than twelve months	$ (1)	$ (1)
Fair value - less than twelve months	$ 103	$ 151
Fair value as percentage of cost - Less than twelve months	99.00%	99.00%
Unrealized Loss - Twelve months or more	$ (101)	$ (119)
Fair Value - Twelve months or more	$ 1,591	$ 1,663
Fair value as percentage of cost - Twelve months or more	94.00%	93.00%
Corporate and other
Available for sale securities in a continuous unrealized loss position
Unrealized loss - less than twelve months	$ (5)	$ (4)
Fair value - less than twelve months	$ 408	$ 123
Fair value as percentage of cost - Less than twelve months	99.00%	97.00%
Unrealized Loss - Twelve months or more	$ (106)	$ (109)
Fair Value - Twelve months or more	$ 1,416	$ 1,455
Fair value as percentage of cost - Twelve months or more	93.00%	93.00%

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Investments - Allowance for credit losses on fixed maturities (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Allowance for Credit Losses [Roll Forward]
Beginning balance	$ 12	$ 11
Provision for expected credit losses on securities with no previous allowance	1	6
Additions (reductions) to previously recognized expected credit losses	1	(1)
Reductions due to sales or redemptions	(3)	0
Ending balance	11	16
Structured securities
Allowance for Credit Losses [Roll Forward]
Beginning balance	9	10
Provision for expected credit losses on securities with no previous allowance	1	1
Additions (reductions) to previously recognized expected credit losses	1	0
Reductions due to sales or redemptions	0	0
Ending balance	11	11
Corporate and other
Allowance for Credit Losses [Roll Forward]
Beginning balance	3	1
Provision for expected credit losses on securities with no previous allowance	0	5
Additions (reductions) to previously recognized expected credit losses	0	(1)
Reductions due to sales or redemptions	(3)	0
Ending balance	$ 0	$ 5

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Investments - Scheduled maturities of available for sale fixed maturities (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Dec. 31, 2023
Fair Value, Fiscal Year Maturity [Abstract]
Available for sale (AFS) fixed maturities	$ 10,371	$ 10,377
Fair Value Percent, Fiscal Year Maturity [Abstract]
Average life of ABS	3 years
Average life of MBS	6 years 6 months
Fixed maturities:
Amortized Cost Basis, Fiscal Year Maturity [Abstract]
One year or less	$ 462
After one year through five years	2,409
After five years through ten years	1,279
After ten years	631
Fixed maturities amortized cost, Subtotal	4,781
Amortized Cost	10,723
Fair Value, Fiscal Year Maturity [Abstract]
One year or less	457
After one year through five years	2,344
After five years through ten years	1,264
After ten years	593
Fixed maturities fair value, Subtotal	4,658
Available for sale (AFS) fixed maturities	$ 10,371	$ 10,377
Fair Value Percent, Fiscal Year Maturity [Abstract]
One year or less	4.00%
After one year through five years	23.00%
After five years through ten years	12.00%
After ten years	6.00%
Fixed maturities fair value, Subtotal, Percent	45.00%
Fair value, Total, Percent	100.00%
Collateralized loan obligations and other asset backed securities
Amortized Cost Basis, Fiscal Year Maturity [Abstract]
Fixed maturities without single maturity date	$ 4,065
Fair Value, Fiscal Year Maturity [Abstract]
Fixed maturities without single maturity date	$ 3,967
Fair Value Percent, Fiscal Year Maturity [Abstract]
Fixed maturities without single maturity date	38.00%
Mortgage-backed securities
Amortized Cost Basis, Fiscal Year Maturity [Abstract]
Fixed maturities without single maturity date	$ 1,877
Fair Value, Fiscal Year Maturity [Abstract]
Fixed maturities without single maturity date	$ 1,746
Fair Value Percent, Fiscal Year Maturity [Abstract]
Fixed maturities without single maturity date	17.00%

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Investments - Schedule of sources of net investment income (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Net Investment Income [Line Items]
Investment income	$ 204	$ 222
Equity in earnings of partnerships and similar investments	25	57
Investment expenses	(6)	(5)
Net investment income	198	217
Fixed maturities: | Net investment income
Net Investment Income [Line Items]
Investment income	134	119
Fixed maturities: | Net investment income
Net Investment Income [Line Items]
Change in fair value	0	3
Equity securities | Net investment income
Net Investment Income [Line Items]
Change in fair value of equity securities	16	16
Other
Net Investment Income [Line Items]
Investment income	22	18
Net investment income | Equity securities
Net Investment Income [Line Items]
Investment income	$ 7	$ 9

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Investments - Realized gains (losses) and changes in unrealized appreciation (depreciation) related to fixed maturity and equity security investments (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Realized gains (losses) and changes in unrealized appreciation (depreciation) related to fixed maturity and equity security investments
Realized gains (losses) on securities	$ 14	$ (46)
Net of tax
Realized gains (losses) and changes in unrealized appreciation (depreciation) related to fixed maturity and equity security investments
Realized before impairments	13	(33)
Realized — impairments	(2)	(4)
Realized gains (losses) on securities	11	(37)
Change in unrealized	9	84
Total pretax
Realized gains (losses) and changes in unrealized appreciation (depreciation) related to fixed maturity and equity security investments
Realized before impairments	16	(41)
Realized — impairments	(2)	(5)
Realized gains (losses) on securities	14	(46)
Change in unrealized	11	107
Fixed maturities:
Realized gains (losses) and changes in unrealized appreciation (depreciation) related to fixed maturity and equity security investments
Realized before impairments	(4)	(23)
Realized — impairments	(2)	(5)
Realized gains (losses) on securities	(6)	(28)
Change in unrealized	11	107
Equity securities
Realized gains (losses) and changes in unrealized appreciation (depreciation) related to fixed maturity and equity security investments
Realized before impairments	20	(18)
Realized — impairments	0	0
Realized gains (losses) on securities	20	(18)
Change in unrealized	0	0
Mortgage loans and other investments
Realized gains (losses) and changes in unrealized appreciation (depreciation) related to fixed maturity and equity security investments
Realized before impairments	0	0
Realized — impairments	0	0
Realized gains (losses) on securities	0	0
Change in unrealized	0	0
Tax effects
Realized gains (losses) and changes in unrealized appreciation (depreciation) related to fixed maturity and equity security investments
Realized before impairments	(3)	8
Realized — impairments	0	1
Realized gains (losses) on securities	(3)	9
Change in unrealized	$ (2)	$ (23)

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Investments - Holding gains (losses) on equity securities still held (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Holding Gains (Losses) on Equity Securities Still Held [Line Items]
Holding gains (losses) on equity securities	$ 35	$ (7)
Realized gains (losses) on securities
Holding Gains (Losses) on Equity Securities Still Held [Line Items]
Holding gains (losses) on equity securities	19	(23)
Net investment income
Holding Gains (Losses) on Equity Securities Still Held [Line Items]
Holding gains (losses) on equity securities	$ 16	$ 16

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Investments - Gross realized gains and losses on available for sale fixed maturity investment transactions (Details) - Fixed maturities: - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Gross realized gains and losses on the sale of available for sale fixed maturity and equity security investments
Gross gains	$ 0	$ 1
Gross losses	$ (3)	$ (25)

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Derivatives - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Dec. 31, 2023
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gains (losses) on interest rate swaps expected to be reclassified from AOCI to net earnings over the next 12 months.	$ 21
Interest rate swaps | Cash flow hedging | Designated as hedging instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, notional amount	1,260	$ 1,300
Receivable for collateral posted related to swaps	48	48
Total return swap | Not designated as hedging instrument
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Payable to return collateral related to swaps	$ 5	$ 5

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Derivatives - Derivatives included in the Balance Sheet at fair value (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Derivatives, Fair Value [Line Items]
Other assets	$ 80	$ 87
Derivative liability	28	22
Interest rate swaps | Designated as hedging instrument
Derivatives, Fair Value [Line Items]
Other assets	0	1
Derivative liability	$ 28	$ 22
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Other Assets	Other Assets
Derivative Liability, Statement of Financial Position [Extensible Enumeration]	Other Liabilities	Other Liabilities
Fixed maturities with embedded derivatives | Not designated as hedging instrument
Derivatives, Fair Value [Line Items]
Other assets	$ 77	$ 81
Derivative liability	$ 0	0
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Available for sale (AFS) fixed maturities
Total return swap | Not designated as hedging instrument
Derivatives, Fair Value [Line Items]
Other assets	$ 3	5
Derivative liability	$ 0	$ 0
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Other Assets	Other Assets
Derivative Liability, Statement of Financial Position [Extensible Enumeration]	Other Liabilities	Other Liabilities

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Derivatives - Gains (losses) included in the Statement of Earnings for changes in the fair value of derivatives (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivatives not designated as hedges, gains (losses) included in net earnings	$ 5	$ 10
Earnings (losses) on derivatives	(2)	5
Fixed maturities with embedded derivatives | Net investment income
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivatives not designated as hedges, gains (losses) included in net earnings	0	3
Fixed maturities with embedded derivatives | Realized gains (losses) on securities
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivatives not designated as hedges, gains (losses) included in net earnings	(1)	1
Total return swap | Other expenses
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivatives not designated as hedges, gains (losses) included in net earnings	6	6
Designated as hedging instrument | Interest rate swaps | Net investment income
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Reclassification from accumulated other comprehensive income	$ (7)	$ (5)

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Managed Investment Entities - Narrative (Details) $ in Millions	1 Months Ended		3 Months Ended
	Feb. 29, 2024 USD ($) collateralized_loan_obligation	Mar. 31, 2023 USD ($) collateralized_loan_obligation	Mar. 31, 2024 USD ($) collateralized_loan_obligation	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Variable Interest Entity [Line Items]
Percentage of investment of most subordinate debt tranche, Minimum			13.30%
Percentage of investment of most subordinate debt tranche, Maximum			100.00%
Number of collateralized loan obligation entities | collateralized_loan_obligation			13
Number of collateralized loan obligation entities formed during the period | collateralized_loan_obligation	1	1
Difference between aggregate unpaid principal balance and fair value of CLOs' fixed maturity investments			$ 95	$ 109
Difference between aggregate unpaid principal balance and carrying value of CLOs' debt			253
Carrying amount of CLO loans in default			1	7
Aggregate unpaid principal balance of variable interest entity loans in default			5	13
Available for sale (AFS) fixed maturities			10,371	10,377
Collateralized loan obligations
Variable Interest Entity [Line Items]
Available for sale (AFS) fixed maturities			1,593	1,687
Managed by third parties | Collateralized loan obligations
Variable Interest Entity [Line Items]
Available for sale (AFS) fixed maturities			1,590	1,690
Variable interest entity, primary beneficiary
Variable Interest Entity [Line Items]
Investment in CLO tranches			201
Amount invested in a temporary warehousing entity		$ 119	169	$ 137	$ 112
Variable interest entity, primary beneficiary | Subordinated debt obligations
Variable Interest Entity [Line Items]
Investment in CLO tranches			139
New collateralized loan obligation temporary warehousing entities
Variable Interest Entity [Line Items]
Amount invested in a temporary warehousing entity		13	$ 30
New collateralized loan obligation entities
Variable Interest Entity [Line Items]
Face value of liabilities issued by managed investment entities on issuance date	$ 406	407
Face amount of managed investment entities liabilities purchased at issuance date	$ 32	$ 16

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Managed Investment Entities - Progression of investment in CLO tranches (Details) - Variable interest entity, primary beneficiary - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Variable Interest Entity, Ownership [Roll Forward]
Balance at beginning of period of ownership of CLO tranches	$ 137	$ 112
Purchases	28	11
Sales	0	0
Distributions	(9)	(5)
Change in fair value	13	1
Balance at end of period of ownership of CLO tranches	$ 169	$ 119

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Managed Investment Entities - Selected financial information related to CLOs (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Gains (losses) on change in fair value of assets/liabilities:
Assets	$ 12	$ 34
Liabilities	(2)	(38)
Management fees paid to AFG	3	4
Variable interest entity, primary beneficiary
Gains (losses) on change in fair value of assets/liabilities:
CLO earnings attributable to AFG	$ 14	$ 1

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Goodwill and Other Intangibles - Narrative (Details) - USD ($)	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Goodwill and Intangible Assets Disclosure [Abstract]
Changes in the goodwill	$ 0
Goodwill	305,000,000		$ 305,000,000
Amortizable intangible assets related to property and casualty insurance acquisitions	208,000,000		213,000,000
Accumulated amortization	44,000,000		$ 39,000,000
Amortization of intangible assets	$ 5,000,000	$ 3,000,000

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Long-Term Debt - Narrative (Details) - USD ($)	1 Months Ended	3 Months Ended
	Jun. 30, 2023	Mar. 31, 2024	Dec. 31, 2023
Long-term Debt, Fiscal Year Maturity [Abstract]
Scheduled principal payments on debt remainder of fiscal year		$ 0
Scheduled principal payments on debt in year one		0
Scheduled principal payments on debt in year two		0
Scheduled principal payments on debt in year three		0
Scheduled principal payments on debt in year four		0
Scheduled principal payments on debt in year five		0
Scheduled principal payments on debt thereafter		1,500,000,000
AFG
Long-term Debt, Fiscal Year Maturity [Abstract]
Revolving credit line		450,000,000
Amount borrowed under revolving credit facility		$ 0	$ 0
AFG | 4.50% Senior Notes due June 2047 | Senior Notes
Long-term Debt, Fiscal Year Maturity [Abstract]
Face amount of debt repurchased			$ 15,000,000
Interest rate on debt instruments		4.50%	4.50%
Amount of debt repurchased			$ 13,000,000
AFG | 5.25% Senior Notes due April 2030 | Senior Notes
Long-term Debt, Fiscal Year Maturity [Abstract]
Face amount of debt repurchased			$ 3,000,000
Interest rate on debt instruments		5.25%	5.25%
Amount of debt repurchased			$ 3,000,000
SOFR | AFG
Long-term Debt, Fiscal Year Maturity [Abstract]
Interest rate on revolving debt facility		1.25%
SOFR | AFG | Minimum
Long-term Debt, Fiscal Year Maturity [Abstract]
Interest rate on revolving debt facility	1.00%
SOFR | AFG | Maximum
Long-term Debt, Fiscal Year Maturity [Abstract]
Interest rate on revolving debt facility	1.75%

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Long-Term Debt - Schedule of long-term debt (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Summary of Carrying value of long-term debt
Principal	$ 1,498	$ 1,498
Discount and Issue Costs	(23)	(23)
Carrying Value	1,475	1,475
Senior Notes | AFG
Summary of Carrying value of long-term debt
Principal	823	823
Discount and Issue Costs	(5)	(5)
Carrying Value	$ 818	$ 818
Senior Notes | 4.50% Senior Notes due June 2047 | AFG
Debt Instrument [Line Items]
Interest rate on debt instruments	4.50%	4.50%
Summary of Carrying value of long-term debt
Principal	$ 567	$ 567
Discount and Issue Costs	(1)	(1)
Carrying Value	$ 566	$ 566
Senior Notes | 5.25% Senior Notes due April 2030 | AFG
Debt Instrument [Line Items]
Interest rate on debt instruments	5.25%	5.25%
Summary of Carrying value of long-term debt
Principal	$ 253	$ 253
Discount and Issue Costs	(4)	(4)
Carrying Value	249	249
Senior Notes | Other | AFG
Summary of Carrying value of long-term debt
Principal	3	3
Discount and Issue Costs	0	0
Carrying Value	3	3
Subordinated Debentures | AFG
Summary of Carrying value of long-term debt
Principal	675	675
Discount and Issue Costs	(18)	(18)
Carrying Value	$ 657	657
Subordinated Debentures | 4.50% Subordinated Debentures due September 2060 | AFG
Debt Instrument [Line Items]
Interest rate on debt instruments	4.50%
Summary of Carrying value of long-term debt
Principal	$ 200	200
Discount and Issue Costs	(5)	(5)
Carrying Value	$ 195	195
Subordinated Debentures | 5.125% Subordinated Debentures due December 2059 | AFG
Debt Instrument [Line Items]
Interest rate on debt instruments	5.125%
Summary of Carrying value of long-term debt
Principal	$ 200	200
Discount and Issue Costs	(5)	(5)
Carrying Value	$ 195	195
Subordinated Debentures | 5.625% Subordinated Debentures due June 2060 | AFG
Debt Instrument [Line Items]
Interest rate on debt instruments	5.625%
Summary of Carrying value of long-term debt
Principal	$ 150	150
Discount and Issue Costs	(4)	(4)
Carrying Value	$ 146	146
Subordinated Debentures | 5.875% Subordinated Debentures due March 2059 | AFG
Debt Instrument [Line Items]
Interest rate on debt instruments	5.875%
Summary of Carrying value of long-term debt
Principal	$ 125	125
Discount and Issue Costs	(4)	(4)
Carrying Value	$ 121	$ 121

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Shareholders' Equity - Preferred stock authorized for issuance (Details)	Mar. 31, 2024 $ / shares shares
Voting Preferred Stock
Class of Stock [Line Items]
Preferred Stock, shares authorized (shares) | shares	12,500,000
Preferred Stock, par value (USD per share) | $ / shares	$ 0
Nonvoting Preferred Stock
Class of Stock [Line Items]
Preferred Stock, shares authorized (shares) | shares	12,500,000
Preferred Stock, par value (USD per share) | $ / shares	$ 0

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Shareholders' Equity - Progression of the components of accumulated other comprehensive income (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Accumulated Other Comprehensive Income [Roll Forward]
AOCI beginning balance	$ (319)
Other comprehensive income (loss), pretax	5	$ 117
Other comprehensive income (loss), tax	(1)	(25)
Other comprehensive income, net of tax	4	92
AOCI ending balance	(315)
Net unrealized gains (losses) on securities:
Unrealized holding gains (losses) on securities arising during the period, pretax	6	78
Unrealized holding gains (losses) on securities arising during the period, tax	(1)	(17)
Unrealized holding gains (losses) on securities arising during the period, after tax	5	61
Reclassification adjustment for realized (gains) losses included in net earnings, pretax	5	29
Reclassification adjustment for realized (gains) losses included in net earnings, tax	(1)	(6)
Reclassification adjustment for realized (gains) losses included in net earnings, after tax	4	23
Total net unrealized gains (losses) on securities, pretax	11	107
Total net unrealized gains (losses) on securities, tax	(2)	(23)
Total net unrealized gains (losses) on securities	9	84
Net unrealized gains (losses) on cash flow hedges:
Unrealized holding gains (losses) on cash flow hedges arising during the period, pretax	(13)	5
Unrealized holding gains (losses) on cash flow hedges arising during the period, tax	3	(1)
Unrealized holding gains (losses) on cash flow hedges arising during the period, after tax	(10)	4
Reclassification adjustment for investment income included in net earnings, pretax	7	5
Reclassification adjustment for investment income included in net earnings, tax	(2)	(1)
Reclassification adjustment for investment income included in net earnings from discontinued operations, after tax	5	4
Total net unrealized gains (losses) on cash flow hedges, pretax	(6)	10
Total net unrealized gains (losses) on cash flow hedges, tax	1	(2)
Total net unrealized gains (losses) on cash flow hedges	(5)	8
Foreign currency translation adjustments, pretax	0	0
Foreign currency translation adjustments, tax	0	0
Foreign currency translation adjustments, after tax	0	0
Total pension and OPRP adjustments, pretax	0	0
Total pension and OPRP adjustments, tax	0	0
Total pension and OPRP adjustments, after Tax	0	0
AOCI attributable to parent
Accumulated Other Comprehensive Income [Roll Forward]
AOCI beginning balance	(319)	(543)
AOCI ending balance	(315)	(451)
Accumulated net investment gain (loss) attributable to parent
Accumulated Other Comprehensive Income [Roll Forward]
AOCI beginning balance	(287)	(497)
AOCI ending balance	(278)	(413)
Accumulated gain (loss), net, cash flow hedge, parent
Accumulated Other Comprehensive Income [Roll Forward]
AOCI beginning balance	(17)	(29)
AOCI ending balance	(22)	(21)
Accumulated foreign currency adjustment attributable to parent
Accumulated Other Comprehensive Income [Roll Forward]
AOCI beginning balance	(17)	(20)
AOCI ending balance	(17)	(20)
Accumulated defined benefit plans adjustment attributable to parent
Accumulated Other Comprehensive Income [Roll Forward]
AOCI beginning balance	2	3
AOCI ending balance	$ 2	$ 3

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Shareholders' Equity - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted Common Stock, shares issued (shares)	157,681
Fair value per share of restricted Common Stock issued under Stock Incentive Plan (USD per share)	$ 126.24
Stock Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense related to stock incentive plans	$ 4	$ 5

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Income Taxes - Narrative (Details)	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Income Tax Disclosure [Abstract]
Statutory rate of income taxes	21.00%	21.00%

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Income Taxes - Reconciliation of income taxes at the statutory rate to the provision for income taxes (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Effective Income Tax Rate Reconciliation, Amount [Abstract]
Earnings before income taxes (“EBT”)	$ 304	$ 264
Income taxes at statutory rate	64	55
Effect of ESOP dividend paid deduction	(2)	(3)
Effect of stock-based compensation	(2)	(2)
Effect of tax exempt interest	(1)	(1)
Effect of dividends received deduction	0	(1)
Effect of nondeductible expenses	2	3
Effect of foreign operations	0	2
Effect of other income	1	(1)
Provision for income taxes as shown on the Statement of Earnings	$ 62	$ 52
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Income taxes at statutory rate as a percentage of EBT	21.00%	21.00%
Effect of ESOP dividend paid deduction as a percentage of EBT	(1.00%)	(1.00%)
Effect of stock-based compensation as a percentage of EBT	(1.00%)	(1.00%)
Effect of tax exempt interest as a percentage of EBT	0.00%	0.00%
Effect of dividends received deduction as a percentage of EBT	0.00%	0.00%
Effect of nondeductible expenses as a percentage of EBT	1.00%	1.00%
Effect of foreign operations as a percentage of EBT	0.00%	1.00%
Effect of other income tax reconciliation as a percentage of EBT	0.00%	(1.00%)
Provision for income taxes as shown on the Statement of Earnings as a percentage of EBT	20.00%	20.00%

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Insurance - Analysis of changes in the liability for losses and loss adjustment expenses, net of reinsurance (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Analysis of changes in the liability for losses and loss adjustment expenses, net of reinsurance
Less reinsurance recoverables, net of allowance	$ 4,288	$ 3,767
Net liability at beginning of year	8,799	8,207
Provision for losses and LAE occurring in the current period	962	883
Net decrease in the provision for claims of prior years	(50)	(63)
Total losses and LAE incurred	912	820
Payments for losses and LAE of:
Current year	(94)	(66)
Prior years	(895)	(815)
Total payments	(989)	(881)
Foreign currency translation and other	1	1
Net liability at end of period	8,723	8,147
Add back reinsurance recoverables, net of allowance	$ 4,327	$ 3,614

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Insurance - Recoverables from reinsurance, progression of allowance for expected credit losses (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Reinsurance Recoverable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	$ 10	$ 8
Provision (credit) for expected credit losses	0	1
Write-offs charged against the allowance	0	0
Ending Balance	$ 10	$ 9

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Insurance - Premiums receivable, progression of allowance for expected credit losses (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Premium Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	$ 15	$ 8
Provision (credit) for expected credit losses	0	0
Write-offs charged against the allowance	0	0
Ending Balance	$ 15	$ 8