Provision for expected credit losses on securities with no previous allowance
Debt Securities, Available-for-Sale, Allowance for Credit Loss, Not Previously Recorded
Distributions from managed investment entities liabilities
Proceeds Received From Distributions of Managed Investment Entities Liabilities
Proceeds received from distributions of managed investment entities liabilities.
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Adjustments:
Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract]
Reductions of long-term debt
Repayments of long-term debt
Repayments of Long-Term Debt
Income taxes at statutory rate
Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount
Year 4, Cumulative
Short-duration Insurance Contracts, Historical Claims Duration, Year Four, Cumulative
Percentage on a cumulative basis of average payout, after reinsurance, in the fourth year after a claim is incurred, beginning with the earliest accident year disclosed for short-duration insurance contracts.
Number of interest rate swaps entered into during the period
Number Of Interest Rate Swaps Entered During The Period
Number Of Interest Rate Swaps Entered During The Period
Cover [Abstract]
Cover [Abstract]
Lease payments due thereafter
Lessee, Operating Lease, Liability, to be Paid, after Year Five
Net Change in Cash and Cash Equivalents
Cash and cash equivalents, period increase (decrease)
Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect
Accident Year 2016
Short-Duration Insurance Contracts, Accident Year 2016 [Member]
Undiscounted contractual maturities of operating lease liabilities
Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block]
Income Tax Authority [Domain]
Income tax authority [Domain]
Income Tax Jurisdiction [Domain]
Trading Symbol
Trading Symbol
Level 3 assets that were priced using unobservable internal models and third party inputs
Level Three Assets That Were Priced Using Unobservable Internal Models and Third Party Inputs
Level three assets that were priced using unobservable internal models and third party inputs
Non-NEOs
Non-NEOs [Member]
Tax benefit related to compensation costs
Share-Based Payment Arrangement, Expense, Tax Benefit
Additions (reductions) to previously recognized expected credit losses
Debt Securities, Available-for-Sale, Allowance for Credit Loss, Not to Sell before Recovery, Credit Loss, Previously Recorded, Expense (Reversal)
Cash dividends per Common Share (USD per share)
Common Stock, Dividends, Per Share, Declared
Goodwill
Goodwill and Intangible Assets, Goodwill, Policy [Policy Text Block]
Purchases of mortgage loans
Payments to Acquire Mortgage Notes Receivable
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table]
Total net unrealized gains (losses) on cash flow hedges, tax
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, Tax
Purchases of equity securities
Payments to Acquire Equity Securities, FV-NI
Reinsurance
Reinsurance Accounting Policy [Policy Text Block]
Change in fair value of equity securities
Equity Securities, FV-NI, Gain (Loss)
Earnings Per Share
Earnings Per Share, Policy [Policy Text Block]
Non-Rule 10b5-1 Arrangement Adopted
Non-Rule 10b5-1 Arrangement Adopted [Flag]
Hedging Relationship [Domain]
Hedging Relationship [Domain]
Cash received from the exercise of stock options
Proceeds from Stock Options Exercised
Fair Value Measurements
Fair Value Disclosures [Text Block]
Other comprehensive income (loss), pretax
Other Comprehensive Income (Loss), before Tax
Unrealized holding gains (losses) on securities arising during the period
Unrealized holding gains (losses) on securities arising during the period, after tax
OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, after Tax
Award Timing Disclosures [Line Items]
Short-duration Insurance Contracts, Accident Year [Domain]
Short-Duration Insurance Contracts, Accident Year [Domain]
Investment, Name [Domain]
Investment, Name [Domain]
Portion at Fair Value Measurement
Portion at Fair Value Measurement [Member]
Operating loss carryforward expiration dates [Axis]
Operating Loss Carry Forward Expiration Dates [Axis]
Operating loss carry forward Expiration Dates.
Audit Information [Abstract]
Auditor information
Segments of Operations
Segment Reporting, Policy [Policy Text Block]
U.S.
UNITED STATES
Leases [Abstract]
Leases [Abstract]
Short-duration Insurance Contracts, Claims Development [Table]
Short-Duration Insurance Contracts, Claims Development [Table]
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Effect of adjustments to prior year taxes
Effective Income Tax Rate Reconciliation, Prior Year Income Taxes, Amount
Operating segments
Operating Segments [Member]
Net cash provided by operating activities
Net Cash Provided by (Used in) Operating Activities
Operating Activities:
Net Cash Provided by (Used in) Operating Activities [Abstract]
4.50% Subordinated Debentures due September 2060
Subordinated Debentures due in September 2060 [Member]
Subordinated Debentures due in September 2060
Components of accumulated other comprehensive income (loss)
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]
Award Timing Method
Award Timing Method [Text Block]
Trading Arrangements, by Individual
Trading Arrangements, by Individual [Table]
Specialty unpaid losses and LAE, net of reinsurance
Unpaid losses and LAE, net of reinsurance (excluding unallocated LAE)
Short-Duration Insurance Contracts, Liability for Unpaid Claims and Allocated Claim Adjustment Expense, Net
Management fees paid to AFG
Management Fees Paid by Variable Interest Entities
Management fees paid by variable interest entities.
Entity Common Stock, Shares Outstanding
Entity Common Stock, Shares Outstanding
Shares exchanged — benefit plans, shares
Stock Repurchased Shares Exchanged in Stock Compensation Plans, Shares
Repurchased shares exchanged in stock compensation plans, shares
Insider Trading Policies and Procedures [Line Items]
States, municipalities and political subdivisions
State and municipal
US States and Political Subdivisions Debt Securities [Member]
Adjustment to Compensation, Amount
Adjustment to Compensation Amount
Capital surplus
Additional Paid in Capital, Common Stock
Compensation Amount
Outstanding Recovery Compensation Amount
Percentage of level 3 assets that were priced using financial information from third parties
Percentage Of Level Three Assets That Were Priced Using Financial Information From Third Parties
Percentage of level three assets that were priced using financial information from third parties
Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table
Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member]
Entity Small Business
Entity Small Business
After five years through ten years
Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value Percent
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value, Percent.
Company Selected Measure Amount
Company Selected Measure Amount
Reinsurance and other receivables
Increase (Decrease) in Reinsurance and Other Receivables
Increase (Decrease) in reinsurance, agent's balances and premiums receivable and other receivables.
Income of managed investment entities:
Income (Loss) of Managed Investment Entities [Abstract]
Income (loss) of managed investment entities.
Agents’ balances and premiums receivable
Premiums Receivable, Net
Tabular List, Table
Tabular List [Table Text Block]
Level 3
Fair Value, Inputs, Level 3 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Liability for environmental and other claims
Accrual for Environmental Loss Contingencies
Effect of stock-based compensation
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-Based Payment Arrangement, Amount
Short-duration insurance contracts, claims development
Short-Duration Insurance Contracts, Claims Development [Table Text Block]
Anti-dilutive potential common shares related to stock-based compensation plans
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount
Debt Securities, Available-for-sale, Allowance for Credit Loss [Line Items]
Debt Securities, Available-for-Sale, Allowance for Credit Loss [Line Items]
Contingent consideration - acquisitions
Contingent Consideration - Acquisitions [Member]
Contingent consideration of acquisitions.
Purchases of investments
Purchases of Investments by Managed Investment Entities
The cash outflow from the purchase of investments by managed investment entities.
Total return swap
Total Return Swap [Member]
Unpaid losses and loss adjustment expenses
Balance at beginning of period
Liability for Claims and Claims Adjustment Expense
Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Goodwill
Goodwill, beginning balance
Goodwill, ending balance
Goodwill
Other comprehensive income (loss), net of tax:
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Short-duration insurance contracts, reconciliation of claims development to liability
Short-Duration Insurance Contracts, Reconciliation of Claims Development to Liability [Table Text Block]
Entity Information [Line Items]
Entity Information [Line Items]
Stock Options
Share-Based Payment Arrangement, Option [Member]
Debt Securities, Available-for-sale [Table]
Debt Securities, Available-for-Sale [Table]
Level 3 assets as a percentage of total assets measured at fair value
Level Three Asset As Percentage Of Asset Measured At Fair Value
Level Three Asset As Percentage Of Asset Measured At Fair Value.
Lease payments due in 2025
Lessee, Operating Lease, Liability, to be Paid, Year One
Summary of Carrying value of long-term debt
Summary Of Carrying Value Of Long Term Debt [Abstract]
Summary of Carrying value of long-term debt.
Comprehensive income
Comprehensive income
Comprehensive Income (Loss), Net of Tax, Attributable to Parent
New collateralized loan obligation entities
New Collateralized Loan Obligation Entities [Member]
New collateralized loan obligation entities.
Property and casualty insurance
Property and Casualty Insurance [Member]
Property and casualty insurance.
Effect of other income tax reconciliation as a percentage of EBT
Effective Income Tax Rate Reconciliation, Other Adjustments, Percent
Available for sale fixed maturity securities by contractual maturity date
Investments Classified by Contractual Maturity Date [Table Text Block]
Award Type [Axis]
Award Type [Axis]
Corporate and other
Corporate and other
Corporate Debt Securities [Member]
Total realized/unrealized gains (losses) included in other comprehensive income (loss)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Other Comprehensive Income (Loss)
ICFR Auditor Attestation Flag
ICFR Auditor Attestation Flag
Total liabilities
Liabilities
Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table]
Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table]
Weighted average useful life of finite-lived intangible assets acquired
Acquired Finite-Lived Intangible Assets, Weighted Average Useful Life
Expiration Date
Trading Arrangement Expiration Date
Investing Activities:
Net Cash Provided by (Used in) Investing Activities [Abstract]
Total Shareholder Return Amount
Total Shareholder Return Amount
Effective Income Tax Rate Reconciliation, Amount [Abstract]
Income Tax Expense (Benefit), Effective Income Tax Rate Reconciliation, Amount [Abstract]
Accident year 2020
Short-Duration Insurance Contract, Accident Year 2020 [Member]
After ten years
Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 10
Internally developed Level 3 assets
Internally Developed Level 3 Assets
Level 3 assets in which the fair value was developed internally.
Percent of real estate-related investments by property type
Real-estate Related Investments, Percent, By Property Type
Percent of real-estate related investments by property type
Equity Awards Adjustments, Footnote
Equity Awards Adjustments, Footnote [Text Block]
Transfer out of Level 3
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers out of Level 3
Gross gains
Debt Securities, Available-for-Sale, Realized Gain
Insurance claims and reserves
Increase (Decrease) in Liability for Claims and Claims Adjustment Expense Reserve
Exercise of stock options, shares
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period
Unrealized holding gains (losses) on cash flow hedges arising during the period, pretax
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax
Commitments to fund credit facilities and limited partnerships
Unfunded Commitments to Credit Facilities and Limited Partnerships
Represents commitments to fund credit facilities and contribute capital to certain limited partnership investments at a future date.
Debt Instrument [Line Items]
Debt Instrument [Line Items]
Named Executive Officers, Footnote
Named Executive Officers, Footnote [Text Block]
Other assets
Other Assets
Collateralized loan obligations
Collateralized Loan Obligations [Member]
5.625% Subordinated Debentures due June 2060
Subordinated Debentures Due In June 2060 [Member]
Subordinated Debentures Due In June 2060
Schedule of weighted-average remaining lease term and weighted-average discount rate
Schedule of Weighted-Average Remaining Lease Term and Weighted-Average Discount Rate [Table Text Block]
Tabular disclosure of the weighted-average remaining lease term and weighted-average discount rate
Cumulative Number of Reported Claims
Short-Duration Insurance Contract, Cumulative Number of Reported Claims
Basis of Presentation
Basis of Accounting, Policy [Policy Text Block]
Total net unrealized gains (losses) on securities
Total net unrealized gains (losses) on securities
OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment and Tax
Diluted (shares)
Weighted Average Number of Shares Outstanding, Diluted
Statutory Accounting Practices [Line Items]
Statutory Accounting Practices [Line Items]
Insurance claims and reserves transition liability
Deferred Tax Liabilities, Discounted Insurance Claims and Reserves Transition Adjustment
Amount of reasonable estimate of deferred tax liability related to the transition to revised interest rates and payout factors used in discounting loss reserves as modified by the TCJA.
Write-offs charged against the allowance
Premium Receivable, Allowance for Credit Loss, Writeoff
Condensed Financial Statements, Captions [Line Items]
Condensed Financial Statements, Captions [Line Items]
MNPI Disclosure Timed for Compensation Value
MNPI Disclosure Timed for Compensation Value [Flag]
Accumulated Other Comprehensive Income [Roll Forward]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Shareholders’ equity
Beginning balance
Ending balance
Equity attributable to parent
Equity, Attributable to Parent
Total deferred tax assets before valuation allowance
Deferred Tax Assets, Gross
Face value of liabilities issued by managed investment entities on issuance date
Face Value Of Liabilities Issued By Managed Investment Entities On Issuance Date
Face value of liabilities issued by managed investment entities.
One year or less
Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, Year One
Business Combinations [Abstract]
Business Combinations [Abstract]
Changes in the carrying value of goodwill
Schedule of Goodwill [Table Text Block]
Percentage of investment of most subordinate debt tranche, Minimum
Percentage of Investment of Most Subordinate Debt Tranche of Variable Interest Entity Minimum
Minimum percentage of investment of most subordinate debt tranche of variable interest entity.
Fixed maturities without a single maturity date
Debt Securities, Available-for-Sale, Maturity, without Single Maturity Date, Amortized Cost
5.25% Senior Notes due April 2030
Senior Notes Due In April 2030 [Member]
Senior Notes due in April 2030
Commissions and other underwriting expenses
Selling, General and Administrative Expense
Fair value, Total, Percent
Available For Sale Securities Debt Maturities Fair Value Percent
Available-for-sale Securities, Debt Maturities, Fair Value, Total, Percent.
Net purchases of trading securities
Proceeds from (Payments for) Trading Securities, Short-Term
Proceeds from sales of other investments
Proceeds from Sale and Maturity of Other Investments
Common Stock reserved for issuance under stock incentive plans (shares)
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized
Document Fiscal Period Focus
Document Fiscal Period Focus
Year 6
Short-Duration Insurance Contracts, Historical Claims Duration, Year Six
Scheduled principal payments on debt in year four
Long-Term Debt, Maturity, Year Four
All Executive Categories
All Executive Categories [Member]
Cumulative Percentage Paid of Incurred Claims and Allocated LAE, Net of Reinsurance
Short-duration Insurance Contracts, Cumulative Percentage Paid of Incurred Claims and Allocated Claim Adjustment Expense, Net
The cumulative percentage paid of incurred claims and allocated LAE, net of reinsurance.
Weighted average common shares adjustment related to stock-based compensation
Incremental Common Shares Attributable to Dilutive Effect of Share-Based Payment Arrangements
Interest and Amortization [Domain]
Interest and Amortization [Domain]
Interest and Amortization [Domain]
Short-duration insurance contracts, schedule of historical claims duration
Short-Duration Insurance Contracts, Schedule of Historical Claims Duration [Table Text Block]
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Table]
Short-Duration Insurance Contracts, Reconciliation of Claims Development to Liability [Table]
Equity securities
Equity Securities [Member]
Accumulated net investment gain (loss) attributable to parent
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member]
Future amortization of intangibles in year two
Finite-Lived Intangible Asset, Expected Amortization, Year Two
Changed Peer Group, Footnote
Changed Peer Group, Footnote [Text Block]
Goodwill deductible for tax purposes
Business Acquisition, Goodwill, Expected Tax Deductible Amount
Assets:
Assets [Abstract]
Other comprehensive income (loss), net of tax
Other comprehensive income (loss)
Other Comprehensive Income (Loss), Net of Tax
Document Type
Document Type
Derivative Contract Type [Domain]
Derivative Contract [Domain]
Level 3 assets that were priced using financial information from third parties
Level Three Assets That Were Priced Using Financial Information From Third Parties
Level three assets that were priced using financial information from third parties
Segment Reporting Information, by Segment
Schedule of Segment Reporting Information, by Segment [Table Text Block]
Derivative Liability, Statement of Financial Position [Extensible Enumeration]
Derivative Liability, Statement of Financial Position [Extensible Enumeration]
Mortgage loans
Mortgage Loans on Real Estate, Commercial and Consumer, Net
Net liability at beginning of period
Net liability at end of period
Total reserves, net of reinsurance
Liability for Unpaid Claims and Claims Adjustment Expense, Net
After ten years
Available For Sale Securities Debt Maturities After Ten Years Fair Value Percent
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value, Percent.
Fixed maturies, available for sale, amortized cost
Debt Securities, Available-for-Sale, Amortized Cost
Depreciation and amortization
Depreciation, Amortization and Accretion, Net
Sales of managed investment entities liabilities
Proceeds Received Related to Sales of Managed Investment Entities Liabilities
Proceeds received related to sales of managed investment entities liabilities during the period
Year 4
Short-Duration Insurance Contracts, Historical Claims Duration, Year Four
AFG
Parent Company [Member]
Maximum
Maximum [Member]
Equity Valuation Assumption Difference, Footnote
Equity Valuation Assumption Difference, Footnote [Text Block]
Beginning balance
Ending balance
Reinsurance Recoverable, Allowance for Credit Loss
Amortizable intangible assets related to acquisitions
Finite-Lived Intangible Assets, Net
Reconciliation of beginning and ending liability for unpaid losses and loss adjustment expenses
Schedule of Liability for Unpaid Claims and Claims Adjustment Expense [Table Text Block]
Investment Type [Axis]
Investment Type [Axis]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table]
Total lease expense, net of sublease income
Lease, Cost
Statistical Measurement [Axis]
Statistical Measurement [Axis]
Non-Rule 10b5-1 Arrangement Terminated
Non-Rule 10b5-1 Arrangement Terminated [Flag]
Beginning balance
Ending balance
Premium Receivable, Allowance for Credit Loss
Non-PEO NEO Average Total Compensation Amount
Non-PEO NEO Average Total Compensation Amount
Deferred Policy Acquisition Costs (''DPAC'')
Deferred Policy Acquisition Costs, Policy [Policy Text Block]
Name
Outstanding Recovery, Individual Name
Goodwill, impairment loss
Goodwill, impairment loss
Goodwill, Impairment Loss
Purchases of real estate, property and equipment
Purchases of Real Estate, Property and Equipment
The cash outflow associated with the purchase of real estate held for investment purposes and cash flows associated with the acquisition of long-lived, physical assets that are used in the normal course of business.
Collateralized loan obligations and other asset backed securities
Collateralized loan obligations and other asset backed securities [Member]
Collateralized loan obligations and other asset backed securities
Payments for losses and LAE of:
Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid [Abstract]
Award Timing Predetermined
Award Timing Predetermined [Flag]
Reinsurance assumed
Assumed Premiums Earned
Impact of discount on workers' compensation policies
Short-Duration Contracts, Discounted Liabilities, Amount
Cash dividends paid on Common Stock
Payments of Ordinary Dividends, Common Stock
Investment, Name [Axis]
Investment, Name [Axis]
Customer relationships
Customer Relationships [Member]
Dividends from subsidiaries
Equity in Distributed Pretax Earnings of Consolidated Subsidiaries
Portion of equity in pretax earnings of consolidated subsidiaries that was distributed from subsidiaries as a dividend.
Long-Term Debt
Long-Term Debt [Text Block]
Diluted (USD per share)
Earnings Per Share, Diluted
Increase in allowance from acquisition of CRS
Premium Receivable, Allowance for Credit Loss, Period Increase (Decrease)
Restatement does not require Recovery
Restatement Does Not Require Recovery [Text Block]
Deferred tax liabilities:
Deferred Tax Liabilities, Gross [Abstract]
Consolidated Balance Sheet [Abstract]
Statement of Financial Position [Abstract]
Other asset-backed securities
Other asset-backed securities
Asset-Backed Securities [Member]
Total realized/unrealized gains (losses) included in Net earnings
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings
Amount of expense for penalties related to a tax position
Unrecognized Tax Benefits, Income Tax Penalties Expense
Insurance
Insurance Disclosure [Text Block]
Restricted Common Stock vested during period, fair value
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value
Expiring 2025 - 2041
Expiration Date One [Member]
Expiration date one.
Disclosure of supplemental Balance Sheet information related to leases
Disclosure Of Supplemental Balance Sheet Information Related To Leases [Table Text Block]
Tabular disclosure of supplemental balance sheet information related to leases
Variable Interest Entity, Primary Beneficiary, Does Not Hold Majority Voting Interest, Disclosures [Abstract]
Variable Interest Entity, Primary Beneficiary, Does Not Hold Majority Voting Interest, Disclosures [Abstract]
Derivatives not designated as hedges, gains (losses) included in net earnings
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net
Provision for income taxes
Provision for income taxes as shown in the Statement of Earnings
Income Tax Expense (Benefit)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Derivative, notional amount
Derivative, Notional Amount
Other assets — derivatives
Derivative asset
Derivative Asset
Investment income
Investment Income of Managed Investment Entities
Investment income of managed investment entities.
Reinsurance Recoverable, Allowance for Credit Loss [Roll Forward]
Reinsurance Recoverable, Allowance for Credit Loss [Roll Forward]
Weighted average period of cost expected to be recognized
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition
Liabilities of managed investment entities
Variable Interest Entity, Liabilities
Variable Interest Entity, Liabilities
Statement of Other Comprehensive Income [Abstract]
Statement of Comprehensive Income [Abstract]
Net cash provided by (used in) investing activities
Net Cash Provided by (Used in) Investing Activities
Interest charges on borrowed money
Interest charges on other borrowings
Interest Expense, Operating and Nonoperating
Income Tax Authority [Axis]
Income tax authority [Axis]
Income Tax Jurisdiction [Axis]
Business Acquisitions [Line Items]
Business Acquisition [Line Items]
Effect of stock-based compensation as a percentage of EBT
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-Based Payment Arrangement, Percent
Other operating activities, net
Other Operating Activities, Cash Flow Statement
All Adjustments to Compensation
All Adjustments to Compensation [Member]
Equity method investments
Equity Method Investments [Table Text Block]
Other specialty
Specialty Other Insurance [Member]
Specialty Other Insurance.
Income Tax Reconciliation [Line Items]
Income Tax Reconciliation [Line Items]
Income Tax Reconciliation.
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies Disclosure [Abstract]
Dividends from subsidiaries
SEC Schedule, 12-04, Cash Dividends Paid to Registrant, Consolidated Subsidiaries
Unfunded commitments to limited partnerships
Unfunded Commitments To Limited Partnerships
Represents commitments to contribute capital to certain limited partnership investments at a future date.
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Table]
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Table]
Holding gains (losses) on equity securities still held
Holding Gains (Losses) on Equity Securities Still Held [Table Text Block]
Tabular disclosure of holding gains (losses) on equity securities still held.
Net unrealized gain (loss) on available for sale fixed maturities
Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain (Loss), before Tax
Accumulated net gain (loss) on cash flow hedges attributable to parent
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]
Long-term Debt, Type [Domain]
Long-Term Debt, Type [Domain]
Entity Address, State or Province
Entity Address, State or Province
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Erroneous Compensation Analysis
Erroneous Compensation Analysis [Text Block]
New collateralized loan obligation, temporary warehousing entities
New Collateralized Loan Obligation Temporary Warehousing Entities [Member]
New collateralized loan obligation temporary warehousing entities
Consulting Company
Consulting Company [Member]
Consulting Company
Holding Gains (Losses) on Equity Securities Still Held [Line Items]
Holding Gains (Losses) on Equity Securities Still Held [Line Items]
holding gains (losses) on equity securities still held
Financial Instruments [Domain]
Financial Instruments [Domain]
Average grant date fair value, Outstanding, Beginning balance
Average grant date fair value, Outstanding, Ending balance
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value
Liabilities and Equity:
Liabilities and Equity:
Liabilities and Equity [Abstract]
Impairment allowance on fixed maturity securities
Debt Securities, Available-for-Sale, Allowance for Credit Loss, Period Increase (Decrease)
Effect of change in valuation allowance (excluding change in tax rate) as a percentage of EBT
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Percent
Restatement Determination Date
Restatement Determination Date
Fair Value
Estimate of Fair Value Measurement [Member]
Multi-family
Multifamily [Member]
Net investment income
Net investment income
Net Investment Income
Pay vs Performance Disclosure
Pay vs Performance Disclosure [Table]
Other operating expenses
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Other Operating Expense
Workers' compensation insurance discount rate
Workers' Compensation Discount, Percent
Condensed Financial Information of Parent Company
Condensed Financial Information of Parent Company Only Disclosure [Text Block]
Available for sale fixed maturities and equity securities
Schedule of Available-for-Sale Securities Reconciliation [Table Text Block]
Operating lease right-of-use asset
Operating Lease, Right-of-Use Asset
Erroneously Awarded Compensation Recovery
Erroneously Awarded Compensation Recovery [Table]
Number of options outstanding
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number
Condensed Financial Information Disclosure [Abstract]
Condensed Financial Information Disclosure [Abstract]
Interest and Amortization [Axis]
Interest and Amortization [Axis]
Interest and amortization
Other liabilities
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other
Additional Information
Additional Financial Information Disclosure [Text Block]
Exercise of stock options
Stock Issued During Period, Value, Stock Options Exercised
Unrealized holding gains (losses) on cash flow hedges arising during the period
Unrealized holding gains (losses) on cash flow hedges arising during the period, after tax
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax
Average grant date fair value, Granted
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value
Subsegments [Domain]
Subsegments [Domain]
Income Taxes
Income Tax, Policy [Policy Text Block]
Peer Group Issuers, Footnote
Peer Group Issuers, Footnote [Text Block]
Other income
Other Income
Segment [Domain]
Segments [Domain]
Other comprehensive income (loss), tax
Other Comprehensive Income (Loss), Tax
Dividends
Dividend Income, Operating
Gains (losses) on change in fair value of assets/liabilities:
Gains (Losses) on Change in Fair Value of Assets/ Liabilities of Collateralized Loan Obligations [Abstract]
Gains losses on change in fair value of assets liabilities collateralized loan obligations.
PEO
PEO [Member]
Name
Trading Arrangement, Individual Name
Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table]
Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table]
Number of collateralized loan obligation entities
Number of Collateralized Loan Obligation Entities
Number of collateralized loan obligation entities.
Entity Public Float
Entity Public Float
Equity in earnings of partnerships and similar investments
Income (Loss) from Equity Method Investments
Liabilities
Gain (Loss) on Change in Fair Value of Liabilities of Variable Interest Entities
Gain (loss) on change in fair value of liabilities of variable interest entities.
Accident Year 2023
Short-Duration Insurance Contract, Accident Year 2023 [Member]
Awards Close in Time to MNPI Disclosures, Table
Awards Close in Time to MNPI Disclosures [Table Text Block]
Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year
Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year [Member]
Cash and cash equivalents
Cash and Cash Equivalents, Fair Value Disclosure
Managed Investment Entities
Variable Interest Entity, Primary Beneficiary, Does Not Hold Majority Voting Interest, Disclosures [Text Block]
The entire disclosure of consolidation and basis of presentation of variable interest entities, in which the registrant is deemed to be the primary beneficiary, even though it does not hold a majority voting interest.
Aggregate Erroneous Compensation Amount
Aggregate Erroneous Compensation Amount
Shares exchanged — benefit plans
Stock Repurchased Shares Exchanged in Stock Compensation Plans, Value
Stock repurchased, shares exchanged in stock compensation plans, value.
Property and Casualty Group
Property And Casualty Group [Member]
Property and casualty group.
Local Phone Number
Local Phone Number
Liabilities acquired:
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities [Abstract]
Transfer out of Level 3
Fair Value, Measurement with Unobservable Inputs Reconciliation, Liability, Transfers out of Level 3
Valuation allowance against deferred tax assets
Deferred Tax Assets, Valuation Allowance
Insurance [Table]
insurance [Table]
insurance
Aggregate Erroneous Compensation Not Yet Determined
Aggregate Erroneous Compensation Not Yet Determined [Text Block]
Year 9, Cumulative
Short-duration Insurance Contracts, Historical Claims Duration, Year Nine, Cumulative
Percentage on a cumulative basis of average payout, after reinsurance, in the ninth year after a claim is incurred, beginning with the earliest accident year disclosed for short-duration insurance contracts.
Change in:
Increase (Decrease) in Operating Capital [Abstract]
Fixed maturities, available for sale, allowance for expected credit losses
Beginning balance
Ending balance
Debt Securities, Available-for-Sale, Allowance for Credit Loss
Accident Year 2021
Short-Duration Insurance Contract, Accident Year 2021 [Member]
Investment securities
Deferred Tax Liabilities, Investments
PEO Total Compensation Amount
PEO Total Compensation Amount
Equity securities, at cost
Equity Securities, FV-NI, Cost
Fixed maturities fair value, Subtotal, Percent
Available-for-sale Securities, Debt Maturities Excluding ABS and MBS, Fair Value, Percent
Available for sale securities debt maturities excluding ABS and MBS fair value percent.
Supplementary Insurance Information
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Disclosure [Text Block]
Income Statement Location [Axis]
Statement of Income Location, Balance [Axis]
Debt Disclosure [Abstract]
Debt Disclosure [Abstract]
Common stocks
Common Shares
Common Stock [Member]
Schedule of Condensed Financial Statements [Table]
Condensed Financial Statements [Table]
Other
Other Reserves [Member]
Other reserves, including discontinued operations.
Year 8
Short-Duration Insurance Contracts, Historical Claims Duration, Year Eight
Forgone Recovery due to Expense of Enforcement, Amount
Forgone Recovery due to Expense of Enforcement, Amount
Schedule of Business Acquisitions, by Acquisition [Table]
Schedule of Business Acquisitions, by Acquisition [Table]
Changes in liability balances of Level 3 financial liabilities
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]
Reinsurance information
Effects of Reinsurance [Table Text Block]
Selected financial information related to collateralized loan obligations
Financial Information Related to Collateralized Loan Obligations [Abstract]
Financial information related to collateralized loan obligations.
Insurance Agency 2024
Insurance Agency 2024 [Member]
Insurance Agency 2024
Investment in CLO tranches, beginning balance
Investment in CLO tranches, ending balance
Variable Interest Entity, Primary Beneficiary, Maximum Loss Exposure, Amount
Segment Reporting [Abstract]
Segment Reporting [Abstract]
Entity Central Index Key
Entity Central Index Key
Private equity funds
Equity Method Investments, Private Equity Funds [Member]
Equity Method Investments, Private Equity Funds
Change in Fair Value [Domain]
Change in Fair Value [Domain]
Change in Fair Value [Domain]
New interest rate swaps entered during the period
New Interest Rate Swaps Entered During Period [Member]
New interest rate swaps entered during the period
Claims Development [Line Items]
Claims Development [Line Items]
Total losses and LAE incurred
Liability for Unpaid Claims and Claims Adjustment Expense, Incurred Claims
Accumulated foreign currency adjustment attributable to parent
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Mortgage loans and other investments
Mortgage Loans And Other Investments [Member]
Mortgage loans and other investments.
Statutory information
Statutory Accounting Practices Disclosure [Table Text Block]
Non-PEO NEO Average Compensation Actually Paid Amount
Non-PEO NEO Average Compensation Actually Paid Amount
Verikai, Inc.
Verikai, Inc. [Member]
Verikai, Inc.
Shareholders' Equity
Equity [Text Block]
Award Timing, How MNPI Considered
Award Timing, How MNPI Considered [Text Block]
Financial Instrument [Axis]
Financial Instrument [Axis]
Segments of Operations
Segment Reporting Disclosure [Text Block]
Reclassification of Cash Flow Hedge Gain (Loss) [Abstract]
Reclassification of Cash Flow Hedge Gain (Loss) [Abstract]
Total realized/unrealized gains (losses) included in Net earnings
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Earnings
Stock-based compensation expense
APIC, Share-Based Payment Arrangement, Increase for Cost Recognition
Restricted Stock
Restricted Stock [Member]
Measurement Basis [Axis]
Measurement Basis [Axis]
Year 3
Short-Duration Insurance Contracts, Historical Claims Duration, Year Three
Title
Trading Arrangement, Individual Title
Consolidated Entities [Axis]
Consolidated Entities [Axis]
Total pretax
Pretax [Member]
Total Pretax.
Managed Investment Entities
Consolidation, Variable Interest Entity, Policy [Policy Text Block]
City Area Code
City Area Code
Purchases of investments, property and equipment
Purchases of Investments, Property and Equipment
The cash outflow associated with the purchase of investments, property and equipment.
Equity in net earnings of subsidiaries
Income (Loss) from Subsidiaries, Net of Tax
Auditor Location
Auditor Location
Debt Securities, Available-for-sale, Allowance for Credit Loss [Table]
Debt Securities, Available-for-Sale, Allowance for Credit Loss [Table]
Contingent consideration — acquisitions
Business Combination, Contingent Consideration, Liability
Insider Trading Policies and Procedures Not Adopted
Insider Trading Policies and Procedures Not Adopted [Text Block]
Deferred policy acquisition costs
Deferred Policy Acquisition Costs and Present Value of Future Insurance Profits, Net
Stockholders' Equity Note [Abstract]
Stockholders' Equity Note [Abstract]
Other expenses
Other Expense [Member]
Common Stock and Capital Surplus
Common Stock Including Additional Paid in Capital [Member]
Amortized cost
Debt Securities, Available-for-Sale, Amortized Cost, after Allowance for Credit Loss
Perpetual preferred stocks
Preferred Stock [Member]
Repurchases of Common Stock
Payments for Repurchase of Common Stock
Crop Insurance Contract, Crop Year 2022
Crop Insurance Contract, Crop Year 2022 [Member]
Crop Insurance Contract, Crop Year 2022
Total financial assets not accounted for at fair value
Financial Assets Not Accounted For At Fair Value
Total financial assets not accounted for at fair value.
Net investment income earned and investment expenses incurred
Investment Income [Table Text Block]
Net earned premiums
Premiums Earned, Net, Property and Casualty
Schedule of Segment Reporting Information, by Segment [Table]
Schedule of Segment Reporting Information, by Segment [Table]
Change in accrued interest of ownership of managed investment entities liabilities
Change in Accrued Interest of Managed Investment Entities Liabilities Owned
Change in accrued interest of managed investment entities liabilities that are owned by the company
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Trading fixed maturities
Trading fixed maturities [Member]
Trading fixed maturities
Earnings per Common Share:
Earnings Per Share [Abstract]
Costs and Expenses:
Benefits, Losses and Expenses [Abstract]
Fair Value, Fiscal Year Maturity [Abstract]
Debt Securities, Available-for-Sale, Fair Value, Fiscal Year Maturity [Abstract]
Environmental Loss Contingency, Statement of Financial Position [Extensible Enumeration]
Environmental Loss Contingency, Statement of Financial Position [Extensible Enumeration]
Shares acquired and retired, shares
Stock Repurchased and Retired During Period, Shares
Class of Stock [Domain]
Class of Stock [Domain]
Gains (losses) on interest rate swaps expected to be reclassified from AOCI to net earnings over the next 12 months.
Cash Flow Hedge Gain (Loss) to be Reclassified within 12 Months
Holding gains (losses) on equity securities
Equity Securities, FV-NI, Unrealized Gain (Loss)
Scheduled principal payments on debt in year two
Long-Term Debt, Maturity, Year Two
Number of CLOs substantially liquidated during the period
Number Of Collateralized Loan Obligation Entities Substantially Liquidated During The Period
Number of collateralized loan obligation entities substantially liquidated during the period
Foreign government
Debt Security, Government, Non-US [Member]
Level 3 assets that were priced using a discounted cash flow approach
Level Three Assets That Were Priced Using A Discounted Cash Flow Approach
Level three assets that were priced using a discounted cash flow approach.
Assets
Gain (Loss) on Change in Fair Value of Assets of Variable Interest Entities
Gain (loss) on change in fair value of assets of variable interest entities.
Aggregate Available
Trading Arrangement, Securities Aggregate Available Amount
Equity Awards Adjustments
Equity Awards Adjustments [Member]
Operating lease liability
Operating Lease, Liability
Allowance for Credit Losses [Roll Forward]
Debt Securities, Available-for-Sale, Allowance for Credit Loss [Roll Forward]
Underlying Securities
Award Underlying Securities Amount
Investments
Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block]
Property and casualty insurance underwriting
Property and casualty insurance underwriting
Property and Casualty Insurance Underwriting Income (Loss)
Underwriting income (loss) for the property and casualty insurance segment, which is calculated as premiums earned less losses and loss adjustment expenses less commissions and other underwriting expenses.
Net unrealized gains (losses) on cash flow hedges:
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, Tax [Abstract]
Dividends on common stock
Dividends, Common Stock, Cash
Amendment Flag
Amendment Flag
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items]
Short-Duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items]
Carrying Value
Reported Value Measurement [Member]
Subordinated Debentures
Subordinated Debt [Member]
Short-duration Insurance Contracts, Historical Claims Duration [Table]
Short-Duration Insurance Contracts, Historical Claims Duration [Table]
3.50% Senior Notes due August 2026
Senior Notes Due In August 2026 [Member]
Senior Notes due in August 2026.
Stock Appreciation Rights (SARs)
Stock Appreciation Rights (SARs) [Member]
Debt Securities, Trading, and Equity Securities, FV-NI [Table]
Debt Securities, Trading, and Equity Securities, FV-NI [Table]
Proceeds from sales of equity securities
Proceeds from Sale of Equity Securities, FV-NI
Discount and Issue Costs
Debt Issuance Costs, Net
One year or less
Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, Year One
Fair Value, Measurements, Fair Value Hierarchy [Domain]
Fair Value Hierarchy and NAV [Domain]
Recovery of Erroneously Awarded Compensation Disclosure [Line Items]
Sales and settlements
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Settlements
Entity Address, Postal Zip Code
Entity Address, Postal Zip Code
Interest rate swaps
Interest Rate Swap [Member]
Specialty casualty
Specialty Casualty Insurance [Member]
Specialty casualty.
Payable to reinsurers
Increase (Decrease) in Reinsurance Payables
Retirement and employee savings plan expense
Other Postretirement Benefits Cost (Reversal of Cost)
Year 3, Cumulative
Short-duration Insurance Contracts, Historical Claims Duration, Year Three, Cumulative
Percentage on a cumulative basis of average payout, after reinsurance, in the third year after a claim is incurred, beginning with the earliest accident year disclosed for short-duration insurance contracts.
Cash and cash equivalents
Cash and cash equivalents
Cash and cash equivalents at beginning of year
Cash and cash equivalents at end of year
Cash and Cash Equivalents, at Carrying Value
Schedule of Investments [Table]
Schedule of Investments [Table]
Other investing activities, net
Payments for (Proceeds from) Other Investing Activities
Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested
Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested [Member]
Auditor Name
Auditor Name
Amortization of deferred policy acquisition costs
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Amortization of Deferred Policy Acquisition Cost
Average grant date fair value, Forfeited
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value
Current taxes:
Current Income Tax Expense (Benefit), Continuing Operations [Abstract]
Gain (loss) on retirement of debt
Gain (Loss) on Extinguishment of Debt
Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested
Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member]
Proceeds from maturities and redemptions of investments
Proceeds from Sale, Maturity and Collection of Investments
Share-based payment arrangement
Share-Based Payment Arrangement [Member]
Fair Value Measurement [Domain]
Fair Value Measurement [Domain]
Reserves for claims and unpaid losses and LAE
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Liability for Future Policy Benefit, Loss, Claim and Loss Expense
Adjustment To PEO Compensation, Footnote
Adjustment To PEO Compensation, Footnote [Text Block]
5.875% Subordinated Debentures due March 2059
Subordinated Debentures Due In March 2059 [Member]
Subordinated Debentures Due In March 2059
Designated as hedging instrument
Designated as Hedging Instrument [Member]
Effect of nondeductible expenses as a percentage of EBT
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Percent
Compensation Actually Paid vs. Other Measure
Compensation Actually Paid vs. Other Measure [Text Block]
Gross unrealized losses on securities by investment category and length of time that have been in a continuous unrealized loss position
Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value [Table Text Block]
Schedule of Stock by Class [Table]
Stock, Class of Stock [Table]
Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year
Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member]
Accident Year 2024
Short-Duration Insurance Contract, Accident Year 2024 [Member]
Average number of Common Shares:
Weighted Average Number of Shares Outstanding, Diluted [Abstract]
Total assets
Total assets
Assets
Reclassification adjustment for investment income included in net earnings, tax
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, Tax
Deferred Tax Assets, Lease Liabilities
Deferred Tax Assets, Lease Liabilities
Deferred tax assets, lease liabilities
Specialty financial
Specialty Financial Insurance [Member]
Specialty Financial.
Cumulative Paid Claims and Allocated LAE, Net of Reinsurance
Short-Duration Insurance Contracts, Cumulative Paid Claims and Allocated Claim Adjustment Expense, Net
Forgone Recovery due to Violation of Home Country Law, Amount
Forgone Recovery due to Violation of Home Country Law, Amount
Derivative Instruments and Hedging Activities Disclosures [Table]
Derivative Instruments and Hedging Activities Disclosures [Table]
Stock-Based Compensation
Share-Based Payment Arrangement [Policy Text Block]
Other
Other Long-term Debt [Member]
Other Long-term Debt.
Capital and Surplus
Statutory Accounting Practices, Statutory Capital and Surplus, Balance
Reclassification adjustment for realized (gains) losses included in net earnings
Reclassification adjustment for realized (gains) losses included in net earnings, after tax
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax
Reconciliation of income taxes at the statutory rate and income taxes shown in the Statement of Earnings
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
Termination Date
Trading Arrangement Termination Date
Investment and other income, net
Investment and Other Income, Net
Net investment income plus other income less other expenses.
Mortgage-backed securities
Collateralized Mortgage-Backed Securities [Member]
Carrying value and fair value of financial instruments that are not carried at fair value
Financial Instruments Financial Assets And Liabilities Balance Sheet Groupings [Abstract]
Financial instruments financial assets and liabilities balance sheet groupings.
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Lease payments due in 2026
Lessee, Operating Lease, Liability, to be Paid, Year Two
Scheduled principal payments on debt in next year
Long-Term Debt, Maturity, Year One
Tangible assets acquired:
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets [Abstract]
Other liabilities
Other Liabilities
Derivatives not designated as hedging instruments
Not Designated as Hedging Instrument [Member]
Level 3 assets that were priced using non-binding broker quotes or pricing services
Level Three Assets That Were Priced Using Non Binding Broker Quotes or Pricing Services
Level three assets that were priced using non-binding broker quotes or pricing services.
After one year through five years
Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year One Through Five
Schedule of fair values of assets acquired and liabilities assumed
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]
Debt Instrument [Axis]
Debt Instrument [Axis]
Payable to reinsurers
Reinsurance Payable
Net Earnings
Net earnings
Net earnings
Net Income (Loss) Attributable to Parent
Trading Arrangement:
Trading Arrangement [Axis]
Fair value of financial instruments
Fair Value, by Balance Sheet Grouping [Table Text Block]
Carrying value of cash and securities owned by U.S.-based insurance subsidiaries on deposit
Assets Held by Insurance Regulators
Pay vs Performance Disclosure, Table
Pay vs Performance [Table Text Block]
Equity securities, fair value in excess of cost
Equity Securities, FV-NI, Fair Value in Excess of Cost
Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI) in excess of the cost of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). Excludes equity method investment and investment in equity security without readily determinable fair value.
Equity Awards Adjustments, Excluding Value Reported in Compensation Table
Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member]
After ten years
Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 10
Total costs and expenses
Benefits, Losses and Expenses
Entity File Number
Entity File Number
Realized gains (losses) on securities before impairments
Marketable Security, Realized Gain (Loss)
Consolidated Entities [Domain]
Consolidated Entities [Domain]
Consolidated Statement of Earnings [Abstract]
Income Statement [Abstract]
Entity Address, Address Line One
Entity Address, Address Line One
Federal
Current Federal Tax Expense (Benefit)
Name
Forgone Recovery, Individual Name
Weighted-average remaining lease term
Operating Lease, Weighted Average Remaining Lease Term
Loss Contingency, Nature [Domain]
Loss Contingency, Nature [Domain]
Investments
Investment, Policy [Policy Text Block]
Award Timing MNPI Considered
Award Timing MNPI Considered [Flag]
Fixed maturities without a single maturity date
Debt Securities, Available-for-Sale, Maturity, without Single Maturity Date, Fair Value
Premium Receivable, Allowance for Credit Loss [Roll Forward]
Premium Receivable, Allowance for Credit Loss [Roll Forward]
Provision for expected credit losses
Reinsurance Recoverable, Credit Loss Expense (Reversal)
Dividend reinvestment plan
Stock Issued During Period, Value, Dividend Reinvestment Plan
Year 2
Short-Duration Insurance Contracts, Historical Claims Duration, Year Two
Outstanding Aggregate Erroneous Compensation Amount
Outstanding Aggregate Erroneous Compensation Amount
Purchases and issuances
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Issuances
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
PEO Actually Paid Compensation Amount
PEO Actually Paid Compensation Amount
Equity securities reported at fair value
Marketable Securities [Table Text Block]
Accident Year 2018
Short-Duration Insurance Contracts, Accident Year 2018 [Member]
Adjustment to Compensation:
Adjustment to Compensation [Axis]
Write-offs charged against the allowance
Reinsurance, Loss on Uncollectible Accounts in Period, Amount
Investment in CLO tranches
Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount
After one year through five years
Available For Sale Securities Debt Maturities After One Through Five Years Fair Value Percent
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Fair Value, Percent.
Year 6, Cumulative
Short-duration Insurance Contracts, Historical Claims Duration, Year Six, Cumulative
Percentage on a cumulative basis of average payout, after reinsurance, in the sixth year after a claim is incurred, beginning with the earliest accident year disclosed for short-duration insurance contracts.
Reclassification adjustment for investment income included in net earnings
Reclassification adjustment for investment income included in net earnings from discontinued operations, after tax
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, after Tax
After one year through five years
Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year One Through Five
Accumulated other comprehensive income (loss), net of tax
AOCI beginning balance
AOCI ending balance
Accumulated Other Comprehensive Income (Loss), Net of Tax
Purchases and issuances
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases
Effect of prior year income taxes as a percentage of EBT
Effective Income Tax Rate Reconciliation, Prior Year Income Taxes, Percent
Pension Adjustments Service Cost
Pension Adjustments Service Cost [Member]
Basic (shares)
Weighted Average Number of Shares Outstanding, Basic
Stock Price or TSR Estimation Method
Stock Price or TSR Estimation Method [Text Block]
Unrealized holding gains (losses) on securities arising during the period, tax
OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, Tax
Sales of investments, property and equipment
Proceeds from Sales of Investments, Property and Equipment
The cash inflow associated with the sale of investments, property and equipment.
Unrealized loss - twelve months or more
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss
Managed investment entities’ assets/liabilities
Change in Managed Investment Entities Assets And Liabilities
The increase (decrease) during the reporting period in other operating assets and liabilities of managed investment entities.
Property and casualty companies
Property, Liability and Casualty Insurance Product Line [Member]
Components of deferred tax assets and liabilities
Components of Deferred Tax Assets and Liabilities [Abstract]
Name
Awards Close in Time to MNPI Disclosures, Individual Name
Unrealized loss - less than twelve months
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss
Number of businesses acquired during period
Number of Businesses Acquired
Entity Filer Category
Entity Filer Category
Fixed maturities with embedded derivatives
Fixed Maturity Securities with Embedded Derivatives [Member]
Fixed maturity securities with embedded derivatives.
Loss Contingencies [Line Items]
Loss Contingencies [Line Items]
Average life of MBS
Mortgage Backed Securities Average Life
Mortgage backed securities average life.
Real estate-related investments
Equity Method Investments, Real Estate-related Investments [Member]
Equity Method Investments, Real Estate-related Investments
Other
Corporate Segment and Other Operating Segment [Member]
Debt and Equity Securities, FV-NI [Line Items]
Debt and Equity Securities, FV-NI [Line Items]
Goodwill acquired during period
Goodwill, Acquired During Period
Statistical Measurement [Domain]
Statistical Measurement [Domain]
Gross unrealized losses on available for sale fixed maturities
Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Loss, before Tax
Lease activity
Lease, Cost [Table Text Block]
Derivatives, Fair Value [Line Items]
Derivatives, Fair Value [Line Items]
Assets of managed investment entities
Variable Interest Entity, Assets
Variable Interest Entity, Assets
Unrecognized tax benefits that would impact the effective tax rate
Unrecognized Tax Benefits that Would Impact Effective Tax Rate
Segment Reporting Information [Line Items]
Segment Reporting Information [Line Items]
Total financial liabilities not accounted for at fair value
Financial Liabilities Not Accounted For At Fair Value
Total financial liabilities not accounted for at fair value.
All Trading Arrangements
All Trading Arrangements [Member]
Compensation Actually Paid vs. Net Income
Compensation Actually Paid vs. Net Income [Text Block]
Accident Year 2017
Short-Duration Insurance Contracts, Accident Year 2017 [Member]
Restricted common stock vesting period
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period
Variable interest entity, primary beneficiary
Variable Interest Entity, Primary Beneficiary [Member]
Accident Year 2022
Short-Duration Insurance Contract, Accident Year 2022 [Member]
Rule 10b5-1 Arrangement Adopted
Rule 10b5-1 Arrangement Adopted [Flag]
Awards Close in Time to MNPI Disclosures
Awards Close in Time to MNPI Disclosures [Table]
Liability for Unpaid Claims and Claims Adjustment Expense, Activity in Liability [Abstract]
Liability for Unpaid Claims and Claims Adjustment Expense, Activity in Liability [Abstract]
Cash payments for income taxes
Income Taxes Paid, Net
Impairment allowance on securities
Investments, Allowance for Credit Loss, Period Increase (Decrease)
Increase (decrease) during the period in the allowance for credit losses on investments
Returns of capital from subsidiaries
Returns Of Capital From Subsidiaries
The cash inflow associated with amounts received from the subsidiaries during the period.
Investments accounted for using the equity method
Equity Method Investments
Pay vs Performance Disclosure [Line Items]
Peer Group Total Shareholder Return Amount
Peer Group Total Shareholder Return Amount
Residential MBS
Residential MBS
Residential Mortgage-Backed Securities [Member]
Equity Securities, FV-NI, Unrealized Gain (Loss) [Abstract]
Foreign currency translation and other
Liability for Unpaid Claims and Claims Adjustment Expense, Foreign Currency Translation Gain (Loss)
Receivable for collateral posted related to swaps
Derivative Liability, Not Subject to Master Netting Arrangement, Collateral, Right to Reclaim Cash
Receivable for collateral posted related to interest rate swap liabilities
Property and transportation
Specialty Property And Transportation Insurance [Member]
Specialty Property and transportation.
Deferred taxes:
Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract]
Derivatives included in the Balance Sheet at fair value
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]
Realized gains (losses) on securities
Realized gains (losses) on securities
Realized Gains (Losses) On Securities [Member]
Primary financial statement caption encompassing realized gains (losses) on securities.
Other Performance Measure, Amount
Other Performance Measure, Amount
Future amortization of intangibles in year three
Finite-Lived Intangible Asset, Expected Amortization, Year Three
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 Related To Fixed Maturity And Equity Security Investments [Abstract]
Realized gains (losses) and changes in unrealized appreciation (depreciation) related to fixed maturity and equity security investments.
Private debt funds
Equity Method Investments, Private Debt Funds [Member]
Equity Method Investments, Private Debt Funds
Total net unrealized gains (losses) on securities, pretax
OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment, before Tax
Goodwill [Line Items]
Goodwill [Line Items]
Leases
Lessee, Operating Leases [Text Block]
Common Stock, shares outstanding
Beginning balance, shares
Ending balance, shares
Common Stock, Shares, Outstanding
Dividend reinvestment plan, shares
Stock Issued During Period, Shares, Dividend Reinvestment Plan
Operating lease expense included in other expenses
Operating Lease, Cost
Operating loss carryforward expiration dates [Domain]
Operating Loss Carry Forward Expiration Dates [Domain]
Operating loss carry forward Expiration Dates.
Agents’ balances and premiums receivable
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Agents’ Balances and Premiums Receivable
Amount due from agents' and amount of premiums due acquired at the acquisition date
Investment and other income
Investment and Other Income
Investment and other income.
Revenues before realized gains (losses)
Revenues before Realized Gains (Losses)
Aggregate revenue (including insurance premiums, investment income and other income) recognized during the period before realized gains (losses) on securities and subsidiaries.
Cash flow hedging
Cash Flow Hedging [Member]
Gross losses
Debt Securities, Available-for-Sale, Realized Loss
Realized gains (losses) on:
Realized Gains (Losses) on [Abstract]
Realized gains (losses) on.
Entity Tax Identification Number
Entity Tax Identification Number
Liability for losses and loss adjustment expenses [Table]
Liability for Claims and Claims Adjustment Expense [Table]
Schedule of long-term debt instruments
Schedule of Long-Term Debt Instruments [Table Text Block]
Net decrease in the provision for claims of prior years
Other Provisions For Claims Of Prior Years [Member]
Other provisions for claims of prior years.
Assets and liabilities measured at fair value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Abstract]
Deferred tax assets:
Deferred Tax Assets, Net [Abstract]
Other expenses
Other Cost and Expense, Operating
Reductions due to sales or redemptions
Debt Securities, Available-for-Sale, Allowance for Credit Loss, Securities Sold
Gain (loss) on change in fair value of assets/liabilities
Gain (Loss) on Change in Fair Value of Assets and Liabilities of Managed Investment Entities
Loss on change in fair value of assets and liabilities of managed investment entities.
Statement, Equity Components [Axis]
Equity Components [Axis]
Equity Components [Axis]
Insurance [Line Items]
Insurance [Line Items]
Insurance
Fixed maturities, available for sale at fair value (amortized cost — $10,687 and $10,752; allowance for expected credit losses of $34 and $12)
Available for sale (AFS) fixed maturities
Debt Securities, Available-for-Sale
Financial assets, beginning balance
Financial assets, ending balance
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value
Face amount of managed investment entities liabilities purchased by subsidiaries at issuance date
Face Amount Of Managed Investment Entities Liabilities Purchased At Issuance Date
Face amount of managed investment entities liabilities purchased at issuance date.
Business Acquisition, Acquiree [Domain]
Business Acquisition, Acquiree [Domain]
Other lines
Other Lines [Member]
Other lines.
Net investment income
Investment Income [Member]
Direct premiums earned
Direct Premiums Earned
Investments [Domain]
Investments [Domain]
Net unrealized gains (losses) on securities:
Debt Securities, Unrealized Gain (Loss) [Abstract]
Insurance [Axis]
Insurance [Axis]
Insurance.
Other operating activities, net
Other Operating Activities, Condensed Consolidating Cash Flow Statement
Other cash or noncash adjustments to reconcile net income to cash provided by (used in) operating activities that are not separately disclosed in the Condensed Consolidating Statement of Cash Flows.
Proceeds from maturities and redemptions of fixed maturities
Proceeds from Maturities, Prepayments and Calls of Debt Securities, Available-for-Sale
Net deferred tax asset
Deferred Tax Assets, Net
Capital contributions to subsidiaries
Capital Contributions to Subsidiaries
The cash outflow associated with amounts contributed to subsidiaries during the period.
Lease payments due in 2029
Lessee, Operating Lease, Liability, to be Paid, Year Five
Total net unrealized gains (losses) on cash flow hedges, pretax
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, before Tax
Total cash and investments
Investments and Cash
Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table
Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table [Member]
Other liabilities — derivatives
Other Liabilities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-Sale [Line Items]
Other assets
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets
Prior years
Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid, Prior Years
Variable interest rate on debt instrument
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration]
Fair value as percentage of cost - less than twelve months
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less Than Twelve Months, Fair Value As Percentage Of Cost
Available for sale securities continuous unrealized loss position less than twelve months fair value as percentage of cost.
Effect of adjustment related to the sale of a subsidiary as a percentage of EBT
Effective Income Tax Rate Reconciliation, Tax Settlement, Domestic, Percent
Cash and cash equivalents at beginning of year
Cash and cash equivalents at end of year
Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents
Equity securities, at fair value
Equity securities
Equity Securities, FV-NI, Current
Unrecognized compensation expense related to equity-based awards that have yet to vest
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount
Year 8, Cumulative
Short-duration Insurance Contracts, Historical Claims Duration, Year Eight, Cumulative
Percentage on a cumulative basis of average payout, after reinsurance, in the eighth year after a claim is incurred, beginning with the earliest accident year disclosed for short-duration insurance contracts.
Foreign
Current Foreign Tax Expense (Benefit)
Consolidation Items [Axis]
Consolidation Items [Axis]
Aggregate unpaid principal balance of CLO loans in default
Aggregate unpaid principal balance of variable interest entity loans in default
Aggregate unpaid principal balance of variable interest entity loans in default
Fair Value Measurements
Fair Value of Financial Instruments, Policy [Policy Text Block]
Interest on income taxes accrued
Unrecognized Tax Benefits, Interest on Income Taxes Accrued
Forgone Recovery due to Disqualification of Tax Benefits, Amount
Forgone Recovery due to Disqualification of Tax Benefits, Amount
Difference between aggregate unpaid principal balance and fair value of CLOs' fixed maturity investments
Difference Between Aggregate Unpaid Principal Balance And Fair Value Of Variable Interest Entity Investments
Difference between aggregate unpaid principal balance and fair value of variable interest entity investments.
Cash interest payments on long-term debt
Interest Paid, Including Capitalized Interest, Operating and Investing Activities
Insurance Product Line [Domain]
Product and Service [Domain]
Maximum amount of dividends available to be paid by insurance subsidiaries to AFG without prior approval of regulatory authorities
Statutory Accounting Practices, Statutory Amount Available for Dividend Payments without Regulatory Approval
Average grant date fair value, Vested
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value
Fair Value Disclosures [Abstract]
Fair Value Disclosures [Abstract]
Prior year claims and claims adjustment expense
Prior Year Claims and Claims Adjustment Expense
Year 7
Short-Duration Insurance Contracts, Historical Claims Duration, Year Seven
Direct premiums written
Direct Premiums Written
Security Exchange Name
Security Exchange Name
Interest rate on revolving debt facility
Debt Instrument, Basis Spread on Variable Rate
Unrealized holding gains (losses) on securities arising during the period, pretax
OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment and Tax
Roll forward of allowance for credit losses on fixed maturity securities
Debt Securities, Available-for-Sale, Allowance for Credit Loss [Table Text Block]
Fixed maturities
Total fixed maturities
Fixed Maturities [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Effect of tax exempt interest
Effective Income Tax Rate Reconciliation, Tax Exempt Income, Amount
State
Current State and Local Tax Expense (Benefit)
Available-for-sale securities in a continuous unrealized loss position
Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss [Abstract]
Realized loss on subsidiary
Gain (Loss) on Disposition of Stock in Subsidiary
Forgone Recovery, Explanation of Impracticability
Forgone Recovery, Explanation of Impracticability [Text Block]
Realized gains (losses) on investing activities
Realized Investment Gains (Losses)
Prepaid reinsurance premiums
Prepaid Reinsurance Premiums
Sales and settlements
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales
Subsegments [Axis]
Subsegments [Axis]
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets Disclosure [Abstract]
Incurred Claims and Allocated LAE, Net of Reinsurance
Short-Duration Insurance Contracts, Incurred Claims and Allocated Claim Adjustment Expense, Net
Other assets
Other Assets [Member]
Net earned premiums
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Premium Revenue
Revolving credit line
Line of Credit Facility, Maximum Borrowing Capacity
Gross written premiums
Premiums Written, Gross
Effect of tax exempt interest as a percentage of EBT
Effective Income Tax Rate Reconciliation, Tax Exempt Income, Percent
Other liabilities — derivatives
Derivative liability
Derivative Liability
Insider Trading Policies and Procedures Adopted
Insider Trading Policies and Procedures Adopted [Flag]
Year 2, Cumulative
Short-duration Insurance Contracts, Historical Claims Duration, Year Two, Cumulative
Percentage on a cumulative basis of average payout, after reinsurance, in the second year after a claim is incurred, beginning with the earliest accident year disclosed for short-duration insurance contracts.
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Asset, Gain (Loss), Statement of Other Comprehensive Income or Comprehensive Income [Extensible Enumeration]
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Asset, Gain (Loss), Statement of Other Comprehensive Income or Comprehensive Income [Extensible Enumeration]
Common Stock, shares authorized
Common Stock, Shares Authorized
Insurance [Abstract]
Insurance [Abstract]
Transfer into Level 3
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3
Fixed maturities fair value, Subtotal
Available-for-sale Securities, Debt Maturities Excluding ABS and MBS, Fair Value
Available for sale securities debt maturities excluding ABS and MBS fair value.
Long-term Debt, Type [Axis]
Long-Term Debt, Type [Axis]
Entity Voluntary Filers
Entity Voluntary Filers
Net investment income
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Net Investment Income
Hedging Designation [Domain]
Hedging Designation [Domain]
Reclassification adjustment for investment income included in net earnings from, pretax
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax
Tax benefit related to exercise of stock options
Share-Based Payment Arrangement, Exercise of Option, Tax Benefit
Net written premiums
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Premium Written
Fair value as a percentage of cost - twelve months or more
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Twelve Months Or Longer, Fair Value As Percentage Of Cost
Available for sale securities continuous unrealized loss position twelve months or longer fair value as percentage of cost.
Fair value - twelve months or more
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer
Other liabilities
Increase (Decrease) in Other Operating Liabilities
Unrealized holding gains (losses) on cash flow hedges arising during the period, tax
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, Tax
Long-term debt
Carrying Value
Long-Term Debt
Pension Adjustments Prior Service Cost
Pension Adjustments Prior Service Cost [Member]
Percentage (based on unrealized loss) of available for sale fixed maturities that are in unrealized loss position and rated investment grade
Percentage (based on unrealized loss) of available for sale fixed maturities that are in unrealized loss position and rated investment grade
Percentage based on unrealized loss of available for sale fixed maturities that are in an unrealized loss position and rated investment grade.
Proceeds from repayments of mortgage loans
Proceeds from Sale and Collection of Mortgage Notes Receivable
Short-duration Insurance Contracts, Claim Duration [Domain]
Short-Duration Insurance Contracts, Claim Duration [Domain]
Acquisitions of Businesses
Mergers, Acquisitions and Dispositions Disclosures [Text Block]
Impact of discount on workers' compensation policies, prior year amount
Workers' Compensation Discount, Prior Year Amount
Fair Value, by Balance Sheet Grouping [Table]
Fair Value, by Balance Sheet Grouping [Table]
Earnings (losses) on derivatives
Gain (Loss) on Derivative Instruments, Net, Pretax
Schedule of Investment Income, Reported Amounts, by Category [Table]
Investment Income [Table]
Restricted stock awards
Stock Issued During Period, Value, Restricted Stock Award, Gross
Pension Benefits Adjustments, Footnote
Pension Benefits Adjustments, Footnote [Text Block]
Total Shareholder Return Vs Peer Group
Total Shareholder Return Vs Peer Group [Text Block]
Investment expenses
Investment Income, Investment Expense
Restricted stock awards, shares
Stock Issued During Period, Shares, Restricted Stock Award, Gross
Investment in subsidiaries
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures
Pension and other postretirement plan adjustments, tax
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, Tax
Document Annual Report
Document Annual Report
Gross realized gains and losses on available for sale fixed maturity and equity security investments
Schedule of Realized Gain (Loss) [Table Text Block]
Foreign operations
Reserves For Foreign Operations [Member]
Reserves for foreign operations.
Crop Risk Services
Crop Risk Services [Member]
Crop Risk Services
Vested
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period
Total
Parent [Member]
Net of tax
Net of tax [Member]
Net of tax
Managed by third parties
Managed by Third Parties [Member]
Managed by third parties
Amortization of intangible assets
Amortization of Intangible Assets
Common Stock, par value (USD per share)
Common Stock, No Par Value
Accounting Policies [Abstract]
Accounting Policies [Abstract]
Revenues:
Revenues [Abstract]
Current Fiscal Year End Date
Current Fiscal Year End Date
Less: future lease payments impact of discounting
Lessee, Operating Lease, Liability, Undiscounted Excess Amount
Excess purchase price over net tangible assets acquired
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Excess Purchase Price Over Net Tangible Assets Acquired
Business combination, recognized identifiable assets acquired and liabilities assumed, excess purchase price over net tangible assets acquired
PEO Name
PEO Name
Award Type [Domain]
Award Type [Domain]
Cash and cash equivalents
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents
Compensation Actually Paid vs. Company Selected Measure
Compensation Actually Paid vs. Company Selected Measure [Text Block]
Nonvoting Preferred Stock
Nonvoting Preferred Stock [Member]
Nonvoting preferred stock.
Proceeds from sales and redemptions of investments
Proceeds from Sales and Redemptions of Investments by Managed Investment Entities
The cash inflow associated with sales, maturities, prepayments and redemptions of investments by managed investment entities.
Non-PEO NEO
Non-PEO NEO [Member]
Finite-lived intangible assets useful life
Finite-Lived Intangible Asset, Useful Life
Total tangible assets acquired
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets
Crop Insurance Contracts, Crop Year [Axis]
Crop Insurance Contracts, Crop Year [Axis]
Crop Insurance Contracts, Crop Year
Fixed maturities, trading at fair value
Trading fixed maturities
Debt Securities, Trading
Income Tax Reconciliation [Table]
Income Tax Reconciliation [Table]
Income Tax Reconciliation.
Hedging Relationship [Axis]
Hedging Relationship [Axis]
Insurance Agency 2022
Insurance Agency 2022 [Member]
Insurance Agency 2022
Class of Stock [Line Items]
Class of Stock [Line Items]
Effect of other income tax reconciliation
Effective Income Tax Rate Reconciliation, Other Adjustments, Amount
Recently Adopted Accounting Standards
New Accounting Pronouncements, Policy [Policy Text Block]
Class of Stock [Axis]
Class of Stock [Axis]
Provision for expected credit losses
Premium Receivable, Credit Loss Expense (Reversal)
Finite-Lived Intangible Assets by Major Class [Axis]
Finite-Lived Intangible Assets by Major Class [Axis]
Accumulated amortization
Finite-Lived Intangible Assets, Accumulated Amortization
Other unpaid losses and LAE, net of reinsurance
Short-Duration Insurance Contracts, Liability for Unpaid Claims and Claim Adjustment Expense, Other Reconciling Item
Name
Measure Name
Entity Interactive Data Current
Entity Interactive Data Current
Proceeds from sales of fixed maturities
Proceeds from Sale of Debt Securities, Available-for-Sale
Insurance [Domain]
Insurance [Domain]
Insurance.
Statement of Cash Flows
Statement of Cash Flows [Policy Text Block]
Describes an entity's accounting policy related to the statement of cash flows.
Transfer into Level 3
Fair Value, Measurement with Unobservable Inputs Reconciliation, Liability, Transfers Into Level 3
Total tax effects
Tax Effects [Member]
Tax effects.
Losses and loss adjustment expenses
Policyholder Benefits and Claims Incurred, Net
Assets and liabilities measured at fair value
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]
Collateralized loan obligations and other asset-backed securities average life
Collateralized Loan Obligations and Other Asset-Backed Securities Average Life
Collateralized loan obligations and Other asset-backed securities average life.
Total deferred tax assets
Deferred Tax Assets, Net of Valuation Allowance
Insurance claims and reserves
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Policyholder Liabilities
Accumulated defined benefit plans adjustment attributable to parent
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Percentage (based on fair value) of available for sale fixed maturities that are in unrealized loss position and rated investment grade
Percentage (based on fair value) of available for sale fixed maturities that are in unrealized loss position and rated investment grade
Percentage (based on fair value) of available for sale fixed maturities that are in an unrealized loss position and rated investment grade.
Interest rate on debt instruments
Debt Instrument, Interest Rate, Stated Percentage
Percent of total revenue derived from sales of property and casualty insurance outside of the United States
Disclosure on Geographic Areas, Property and Casualty Revenues Attributed to Foreign Countries
Property and casualty insurance revenues derived from customers of foreign countries.
Reinsurance ceded
Ceded Premiums Written
Schedule of Investments [Line Items]
Schedule of Investments [Line Items]
Fixed maturities without a single maturity date, percent of fair value
Available For Sale Securities, Debt Maturities, Without Single Maturity Date, Fair Value Percent
The percent of fair value of fixed maturity securities without a single maturity date
Summary of gain (loss) included in the Statement of Earnings for changes in the fair value of derivatives
Derivative Instruments, Gain (Loss) [Table Text Block]
Number of CLOs formed during the period
Number Of Collateralized Loan Obligation Entities Formed During The Period
Number of collateralized loan obligation entities formed during the period.
Auditor Firm ID
Auditor Firm ID
Provision for income taxes as shown in the Statement of Earnings as a percentage of EBT
Effective Income Tax Rate Reconciliation, Percent
Deferred tax asset acquired
Business Combination Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Assets
Earnings before income taxes
Earnings before income taxes (“EBT”)
Operating Income (Loss)
Effect of change in valuation allowance (excluding change in tax rate)
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount
Number of segments
Number of Reportable Segments
Total liabilities and shareholders’ equity
Liabilities and Equity
Dividends
Dividends
Rule 10b5-1 Arrangement Terminated
Rule 10b5-1 Arrangement Terminated [Flag]
Reinsurance ceded
Ceded Premiums Earned
Fair Value Hierarchy and NAV [Axis]
Fair Value Hierarchy and NAV [Axis]
Deferred policy acquisition costs
Deferred Tax Liabilities, Deferred Expense, Deferred Policy Acquisition Cost
Foreign underwriting losses
Deferred Tax Assets, Operating Loss Carryforwards, Foreign
Equity in undistributed earnings of subsidiaries
Equity in Undistributed Pretax Earnings of Consolidated Subsidiaries
Portion of equity in pretax earnings of consolidated subsidiaries that was not distributed from subsidiaries.
Hedging Designation [Axis]
Hedging Designation [Axis]
Derivatives
Derivative Instruments and Hedging Activities Disclosure [Text Block]
Unpaid losses and LAE — 11th year and prior (excluding unallocated LAE)
Short-Duration Insurance Contracts, Liability for Unpaid Claims and Allocated Claim Adjustment Expense, Net, Not Separately Presented
Finite-Lived Intangible Assets, Major Class Name [Domain]
Finite-Lived Intangible Assets, Major Class Name [Domain]
Summary of restricted stock awards
Share-Based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block]
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) Related to Fixed Maturity and Equity Security Investments [Table Text Block]
Tabular disclosure of realized gains (losses) and changes in unrealized appreciation (depreciation) related to fixed maturity and equity security investments.
Year 9
Short-Duration Insurance Contracts, Historical Claims Duration, Year Nine
Right-of-use assets obtained under new leases
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability
Underlying Security Market Price Change
Underlying Security Market Price Change, Percent
Individual:
Individual [Axis]
Accumulated Other Comprehensive Income (Loss)
AOCI attributable to parent
AOCI Attributable to Parent [Member]
Insurance Product Line [Axis]
Product and Service [Axis]
Dividends [Domain]
Dividends [Domain]
Retained earnings
Retained Earnings, Unappropriated
Statement [Line Items]
Statement [Line Items]
Total net unrealized gains (losses) on securities, tax
OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment, Tax
Impairment allowance on mortgage loans and other investments
Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease)
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]
Retirements of managed investment entities’ liabilities
Retirement Of Managed Investment Entities Liabilities
Retirement of managed investment entities' liabilities.
Net tangible assets acquired, at fair value
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net
Compensation Actually Paid vs. Total Shareholder Return
Compensation Actually Paid vs. Total Shareholder Return [Text Block]
Fixed maturities amortized cost, Subtotal
Available-for-sale Securities, Debt Maturities Excluding ABS and MBS, Amortized Cost
Available for sale securities debt maturities excluding ABS and MBS amortized cost.
Sublease income
Sublease Income
Year 10
Short-Duration Insurance Contracts, Historical Claims Duration, Year 10
Business acquisition, consideration transferred
Business Combination, Consideration Transferred
Financial liabilities, beginning balance
Financial liabilities, ending balance
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value
Derivatives
Derivatives, Policy [Policy Text Block]
Credit Losses on Financial Instruments
Credit Loss, Financial Instrument [Policy Text Block]
Changes in asset balances of Level 3 financial assets
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]
Minimum
Minimum [Member]
Adoption Date
Trading Arrangement Adoption Date
Other receivables
Other Receivables
United Kingdom
UNITED KINGDOM
Amortization of deferred policy acquisition costs
Deferred Policy Acquisition Costs, Amortization Expense
After five years through ten years
Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10
Reinsurance recoveries
Policyholder Benefits and Claims Incurred, Ceded
Payable to return collateral related to swaps
Derivative Asset, Not Subject to Master Netting Arrangement, Collateral, Obligation to Return Cash
Payable to return collateral related to interest rate swap assets
Unallocated LAE
Short-Duration Insurance Contracts, Liability for Unpaid Claims and Claims Adjustment Expense, Accumulated Unallocated Claim Adjustment Expense
Foreign currency translation adjustments, tax
Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax
Significant Accounting Policies [Line Items]
Variable Interest Entity [Line Items]
Variable Interest Entity [Line Items]
Business Segments [Axis]
Segments [Axis]
Other benefit plans, shares
Shares Issued, Shares, Share-Based Payment Arrangement, before Forfeiture
Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year
Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year [Member]
Statutory rate of income taxes
Income taxes at statutory rate as a percentage of EBT
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent
Derivative Instrument Risk [Axis]
Derivative Instrument [Axis]
Percentage of Level 3 assets that were priced using a discounted cash flow approach
Percentage Of Level Three Assets That Were Priced Using A Discounted Cash Flow Approach
Percentage of level three assets that were priced using a discounted cash flow approach.
Principal
Long-Term Debt, Gross
Exercise Price
Award Exercise Price
Components of deferred tax assets and liabilities
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]
Premium Recognition
Insurance Premiums Revenue Recognition, Policy [Policy Text Block]
Arrangement Duration
Trading Arrangement Duration
Shares issued:
Shares Issued [Abstract]
Shares issued.
Crop Insurance Contracts, Crop Year [Domain]
Crop Insurance Contracts, Crop Year [Domain]
Crop Insurance Contracts, Crop Year [Domain]
Operating loss carryforwards
Operating Loss Carryforwards
Pension and other postretirement plan adjustments, pretax
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, before Tax
Goodwill and Other Intangibles
Goodwill and Intangible Assets Disclosure [Text Block]
Securities
Realized gains (losses) on securities
Debt and Equity Securities, Realized Gain (Loss)
Schedule of Variable Interest Entities [Table]
Variable Interest Entity [Table]
Managed investment entities:
Managed Investments Entities [Abstract]
Managed investments entities.
Shareholders’ equity:
Equity, Attributable to Parent [Abstract]
Fair value - less than twelve months
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months
Current year
Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid, Current Year
Derivative Asset, Statement of Financial Position [Extensible Enumeration]
Derivative Asset, Statement of Financial Position [Extensible Enumeration]
Material Terms of Trading Arrangement
Material Terms of Trading Arrangement [Text Block]
Interest charges on intercompany borrowings
Interest Expense on Intercompany Borrowings
The cost of funds borrowed from subsidiaries that are accounted for as interest and are charged against earnings during the period.
Debt instrument, repurchase amount
Debt Instrument, Repurchase Amount
Future amortization of intangibles in year four
Finite-Lived Intangible Asset, Expected Amortization, Year Four
Carrying amount of CLO loans in default
Carrying Amount Of Variable Interest Entity Loans In Default
Carrying amount of variable interest entity loans in default.
All Individuals
All Individuals [Member]
A&E reserves
Special Asbestos And Environmental Reserves [Member]
Special asbestos and environmental reserves.
Income Tax Disclosure [Abstract]
Income Tax Disclosure [Abstract]
Entities [Table]
Entities [Table]
Face amount of managed investment entities liabilities purchased during the period
Amount Of Managed Investment Entities Liabilities Purchased During the Period
Amount of managed investment entities liabilities purchased during the period
Real estate and other investments
Real estate and other investments
Other Investments
Difference between aggregate unpaid principal balance and fair value of CLOs' debt
Difference Between Aggregate Unpaid Principal Balance And Fair Value Of Variable Interest Entity Debt
Difference between aggregate unpaid principal balance and fair value of variable interest entity debt.
Statement of Stockholders' Equity [Abstract]
Statement of Stockholders' Equity [Abstract]
Accident Year 2015
Short-Duration Insurance Contracts, Accident Year 2015 [Member]
Change in unrealized
Change In Unrealized Appreciation Depreciation
Change in unrealized appreciation depreciation.
Reclassification adjustment for realized (gains) losses included in net earnings, tax
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax
Liability for losses and loss adjustment expenses [Line Items]
Liability for Claims and Claims Adjustment Expense [Line Items]
Gross unrealized gains on available for sale fixed maturities
Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain, before Tax
Total IBNR Plus Expected Development on Reported Claims
Short-Duration Insurance Contracts, Incurred but Not Reported (IBNR) Claims Liability, Net
Percentage of level 3 assets that were priced using non-binding broker quotes or pricing services
Percentage Of Level Three Assets That Were Priced Using Non-Binding Broker Quotes or Pricing Services
Percentage of level 3 assets that were priced using non-binding broker quotes or pricing services.
Business Combination, Asset Acquisition, and Joint Venture Formation [Abstract]
Net increase (decrease) in the provision for claims of prior years:
Liability for Unpaid Claims and Claims Adjustment Expense, Incurred Claims [Abstract]
Acquisition costs incurred
Business Acquisition, Transaction Costs
Assets:
Assets, Fair Value Disclosure [Abstract]
Statutory information
Statutory Information [Abstract]
Statutory information.
Liability Class [Axis]
Liability Class [Axis]
Liability Class [Axis]
Total liabilities acquired
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities
Operating and capital loss carryforwards [Line Items]
Tax Credit Carryforward [Line Items]
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance [Line Items]
Short-Duration Insurance Contracts, Historical Claims Duration [Line Items]
Number of fixed maturities in an unrealized loss position
Debt Securities, Available-for-Sale, Unrealized Loss Position, Number of Positions
Earnings before realized gains (losses) and income taxes
Operating Income (Loss), Before Realized Gains (Losses) and Income Taxes
The net result for the period of deducting operating expenses from operating revenues (excluding realized gains (losses) on securities and subsidiaries) before income taxes.
Effect of foreign operations as a percentage of EBT
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Percent
Effect of employee stock ownership plan dividend paid deduction
Effective Income Tax Rate Reconciliation, Deduction, Employee Stock Ownership Plan Dividend, Amount
Other assets
Increase (Decrease) in Other Operating Assets
Net unrealized gains (losses) on securities:
OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment and Tax [Abstract]
Intangible assets acquired
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles
Pension and other postretirement plan adjustments
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax
Real Estate [Domain]
Real Estate [Domain]
Federal
Deferred Federal Income Tax Expense (Benefit)
Forfeitures of restricted stock, shares
Stock Issued During Period, Shares, Restricted Stock Award, Forfeited
Contingencies
Commitments and Contingencies Disclosure [Text Block]
Future amortization of intangibles after year five
Finite-Lived Intangible Asset, Expected Amortization, after Year Five
Excludes short-duration insurance contracts detail for accident years not separately presented
Excludes Short-duration Insurance Contracts, Liability for Unpaid Claims and Allocated Claim Adjustment Expense Not Separately Presented [Member]
Excludes the undiscounted amount, after reinsurance, of the liability for unpaid claims and allocated claim adjustment expense for short-duration insurance contracts for accident years not separately presented in claim development information. Excludes unallocated claim adjustment expense.
Measure:
Measure [Axis]
Unearned premiums
Unearned Premiums
Claims, losses and settlement expenses
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Benefit, Claim, Loss and Settlement Expenses
Fair Value by Asset Class [Domain]
Asset Class [Domain]
Investments:
Investments [Abstract]
Preferred Stock, shares authorized
Preferred Stock, Shares Authorized
Mark-to-market of ownership of managed investment entities liabilities
Change in Fair Value of Ownership of Managed Investment Entities Liabilities
Change in fair value of ownership of managed investment entities liabilities
Special charges to increase asbestos and environmental reserves
Liability for Asbestos and Environmental Claims, Net, Period Increase (Decrease)
Income tax penalties accrued
Unrecognized Tax Benefits, Income Tax Penalties Accrued
Assets of MIE
Assets of Managed Investment Entities [Member]
Assets of managed investment entities.
Entity Emerging Growth Company
Entity Emerging Growth Company
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]
Total liabilities accounted for at fair value
Liabilities, Fair Value Disclosure
Expenses of managed investment entities
Expenses of Managed Investment Entities
Expenses of managed investment entities.
Fair Value, Liability, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]
Fair Value, Liability, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]
Scheduled principal payments on debt in year five
Long-Term Debt, Maturity, Year Five
Non-GAAP Measure Description
Non-GAAP Measure Description [Text Block]
Reclassification from accumulated other comprehensive income
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax
Change in Fair Value [Axis]
Change in Fair Value [Axis]
Change in fair value
Equity Component [Domain]
Equity Component [Domain]
Recoverables from reinsurers
Reinsurance Recoverable for Paid and Unpaid Claims and Claims Adjustments
Additional 402(v) Disclosure
Additional 402(v) Disclosure [Text Block]
Gain on change in fair value of contingent consideration liability
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability
Entity Shell Company
Entity Shell Company
Entity Incorporation, State or Country Code
Entity Incorporation, State or Country Code
Accumulated Other Comprehensive Income, Net of Tax ("AOCI")
Comprehensive Income, Policy [Policy Text Block]
Senior Notes, amount of the original debt instrument that was redeemed
Debt Instrument, Repurchased Face Amount
Effect of dividend received deduction as a percentage of EBT
Effective Income Tax Rate Reconciliation, Deduction, Dividend, Percent
Statement [Table]
Statement [Table]
Accounting Policies
Significant Accounting Policies [Text Block]
5.125% Subordinated Debentures due December 2059
Subordinated Debentures due in December 2059 [Member]
Subordinated Debentures due in December 2059
Selected financial information related to collateralized loan obligations
Schedule of Variable Interest Entities [Table Text Block]
Consolidation Items [Domain]
Consolidation Items [Domain]
Liability for asbestos and environmental reserves
Liability for Asbestos and Environmental Claims, Gross
Unearned premiums
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Unearned Premium
Effect of employee stock ownership plan dividend paid deduction as a percentage of EBT
Effective Income Tax Rate Reconciliation, Deduction, Employee Stock Ownership Plan Dividend, Percent
Level 1
Fair Value, Inputs, Level 1 [Member]
Foreign currency translation adjustments
Foreign currency translation adjustments
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax
Year 7, Cumulative
Short-duration Insurance Contracts, Historical Claims Duration, Year Seven, Cumulative
Percentage on a cumulative basis of average payout, after reinsurance, in the seventh year after a claim is incurred, beginning with the earliest accident year disclosed for short-duration insurance contracts.
Consolidated Statement of Cash Flows [Abstract]
Statement of Cash Flows [Abstract]
Senior Notes
Senior Notes [Member]
The scheduled maturities of available for sale fixed maturities
Available-for-Sale Securities, Debt Maturities [Abstract]
Income Tax Expense (Benefit), Continuing Operations [Abstract]
Income Tax Expense (Benefit), Continuing Operations [Abstract]
Number of options exercisable
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Number
Interest included in tax provision
Unrecognized Tax Benefits, Interest on Income Taxes Expense
Scheduled principal payments on debt in year three
Long-Term Debt, Maturity, Year Three
Schedule of Long-term Debt Instruments [Table]
Schedule of Long-Term Debt Instruments [Table]
Financial assets:
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Investment in securities
Marketable Securities
Reclassification adjustment for realized (gains) losses included in net earnings, pretax
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax
Net Earnings
Statutory Accounting Practices, Statutory Net Income Amount
Short-duration Insurance Contracts, Accident Year [Axis]
Short-Duration Insurance Contracts, Accident Year [Axis]
Accumulated Other Comprehensive Income (Loss) [Table]
Accumulated Other Comprehensive Income (Loss) [Table]
After five years through ten years
Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10
Entity Well-known Seasoned Issuer
Entity Well-known Seasoned Issuer
Total payments
Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid
Income Taxes
Income Tax Disclosure [Text Block]
Shares acquired and retired
Stock Repurchased and Retired During Period, Value
Lease payments due in 2028
Lessee, Operating Lease, Liability, to be Paid, Year Four
Effect of nondeductible expenses
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Amount
Other
Other Long-Term Investments [Member]
Maturities of short term investments
Maturity Period Of Short Term Investment Maximum
Maturity period of short term investment maximum.
Net Investment Income [Line Items]
Net Investment Income [Line Items]
Reinsurance recoverable and premiums receivable, allowance for credit loss
Reinsurance Recoverable and Premiums Receivable, Allowance for Credit Loss [Table Text Block]
Tabular disclosure of allowance for credit loss on reinsurance recoverable and premiums receivable.
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Line Items]
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Line Items]
Summary of operating loss carryforwards
Summary of Operating Loss Carryforwards [Table Text Block]
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Debt Issuance Costs
Debt, Policy [Policy Text Block]
Weighted-average discount rate
Operating Lease, Weighted Average Discount Rate, Percent
Total realized/unrealized gains (losses) included in other comprehensive income (loss)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Other Comprehensive Income (Loss)
Net cash used in financing activities
Net Cash Provided by (Used in) Financing Activities
Workers' Compensation Insurance
Workers' Compensation Insurance [Member]
Proceeds from sales of real estate, property and equipment
Proceeds From Sales Of Real Estate Property and Equipment
The cash inflow associated with the sale of real estate, property and equipment.
Loss Contingency Nature [Axis]
Loss Contingency Nature [Axis]
Entity Registrant Name
Entity Registrant Name
Commercial MBS
Commercial MBS
Commercial Mortgage-Backed Securities [Member]
Purchases of businesses
Cash paid at purchase
Payments to acquire subsidiaries
Payments to Acquire Businesses, Gross
Adjustment to Non-PEO NEO Compensation Footnote
Adjustment to Non-PEO NEO Compensation Footnote [Text Block]
Reinsurance recoverables on asbestos and environmental reserves, net of allowance
Less reinsurance recoverables, net of allowance
Add back reinsurance recoverables, net of allowance
Reinsurance recoverables, net of allowance
Reinsurance Recoverable for Unpaid Claims and Claims Adjustments
Fair Value as of Grant Date
Award Grant Date Fair Value
Effect of foreign operations
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Amount
Holding Gains (Losses) on Equity Securities Still Held [Table]
Holding Gains (Losses) on Equity Securities Still Held [Table]
Tabular disclosure of holding gains (losses) on equity securities still held
Level 2
Fair Value, Inputs, Level 2 [Member]
Other benefit plans
Shares Issued, Value, Share-Based Payment Arrangement, before Forfeiture
Structured securities
Structured Securities [Member]
Structure securities such as mortgage back securities, collateralized loan obligations and other asset-backed securities
Restatement Determination Date:
Restatement Determination Date [Axis]
Title of 12(b) Security
Title of 12(b) Security
Common Stock, no par value — 200,000,000 shares authorized — 83,978,258 and 83,635,807 shares outstanding
Common Stock, Value, Issued
Document Financial Statement Error Correction [Flag]
Document Financial Statement Error Correction [Flag]
Analysis of changes in the liability for losses and loss adjustment expenses, net of reinsurance
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]
Percentage of internally developed Level 3 assets compared to total Level 3 assets
Percentage Of Internally Developed Level Three Assets Compared to Total Level 3 Assets
Percentage Of Internally Developed Level Three Assets Compared to Total Level 3 Assets
Other, net
Deferred Tax Assets, Other
Unpaid Losses and Loss Adjustment Expenses
Unpaid Policy Claims and Claims Adjustment Expense, Policy [Policy Text Block]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Fair Value by Liability Class [Domain]
Fair Value by Liability Class [Domain]
Fair Value by Liability Class [Domain]
Financing Activities:
Net Cash Provided by (Used in) Financing Activities [Abstract]
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]
Long-term Debt, Fiscal Year Maturity [Abstract]
Long-Term Debt, Fiscal Year Maturity [Abstract]
Total deferred tax liabilities
Deferred Tax Liabilities, Gross
Statutory Accounting Practices [Table]
Statutory Accounting Practices [Table]
APU
APU Consolidated And Its Subsidiaries [Member]
APU Consolidated and its subsidiaries.
Basic (USD per share)
Earnings Per Share, Basic
Issuances of Common Stock
Proceeds from Issuance of Common Stock
Cash paid for lease liabilities reported in operating cash flows
Operating Lease, Payments
Cash and cash equivalents
Cash and Cash Equivalents [Member]
Award Timing MNPI Disclosure
Award Timing MNPI Disclosure [Text Block]
GAFRI
GAFRI [Member]
GAFRI.
Tax expense related to pending IRS settlement
Effect of adjustment related to the sale of a subsidiary
Effective Income Tax Rate Reconciliation, Tax Settlement, Domestic, Amount
Gross realized gains and losses on the sale of available for sale fixed maturity security investments
Debt Securities, Available-for-Sale, Realized Gain (Loss) [Abstract]
Federal net operating loss carryforwards
Deferred Tax Assets, Operating Loss Carryforwards, Domestic
Operating and capital loss carryforwards [Table]
Tax Credit Carryforward [Table]
Aggregate Pension Adjustments Service Cost
Aggregate Pension Adjustments Service Cost [Member]
Schedule of Goodwill [Table]
Goodwill [Table]
One year or less
Available For Sale Securities Debt Maturities Within One Year Fair Value Percent
Available-for-sale Securities, Debt Maturities, within One Year, Fair Value, Percent.
Accident Year 2019
Short-Duration Insurance Contract, Accident Year 2019 [Member]
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Abstract]
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Abstract]
Future amortization of intangibles in next year
Finite-Lived Intangible Asset, Expected Amortization, Year One
Amount borrowed under AFG revolving credit facility
Long-Term Line of Credit
Contingent consideration possible to be paid, maximum
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High
Granted
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period
U.S. Government and government agencies
U.S. government agency
US Treasury and Government [Member]
Reinsurance assumed
Assumed Premiums Written
Total revenues
Revenues
Benefit Plans
Postretirement and Postemployment Benefit Plans [Policy Text Block]
Disclosure of the accounting policy for postretirement and postemployment benefit plans sponsored by the entity.
Entity Address, City or Town
Entity Address, City or Town
Deferred policy acquisition costs
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Deferred Policy Acquisition Cost
Leases
Lessee, Leases [Policy Text Block]
Cash and cash equivalents of businesses acquired
Net Change in Cash and Cash Equivalents from the Acquisition or Disposition of Businesses
Net change in cash and cash equivalents from the acquisition or disposition of businesses
Fair Value Percent, Fiscal Year Maturity [Abstract]
Available For Sale Securities, Debt Maturities, Fair Value Percent, Fiscal Year Maturity [Abstract]
Available For Sale Securities, Debt Maturities, Fair Value Percent, Fiscal Year Maturity [Abstract]
Total intrinsic value of options exercised
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period, Intrinsic Value
Total compensation expense related to stock incentive plans
Share-Based Payment Arrangement, Expense
Dividends [Axis]
Dividends [Axis]
Investments, Debt and Equity Securities [Abstract]
Investments, Debt and Equity Securities [Abstract]
Year 5, Cumulative
Short-duration Insurance Contracts, Historical Claims Duration, Year Five, Cumulative
Percentage on a cumulative basis of average payout, after reinsurance, in the fifth year after a claim is incurred, beginning with the earliest accident year disclosed for short-duration insurance contracts.
Loss Contingencies [Table]
Loss Contingencies [Table]
Forfeited
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period
Business Acquisition [Axis]
Business Acquisition [Axis]
Net written premiums
Premiums Written, Net
Year 10, Cumulative
Short-duration Insurance Contracts, Historical Claims Duration, Year Ten, Cumulative
Percentage on a cumulative basis of average payout, after reinsurance, in the tenth year after a claim is incurred, beginning with the earliest accident year disclosed for short-duration insurance contracts.
Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year
Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year [Member]
Deferred Tax Liabilities, Leasing Arrangements
Deferred Tax Liabilities, Leasing Arrangements
Liabilities:
Liabilities, Fair Value Disclosure [Abstract]
Total net unrealized gains (losses) on cash flow hedges
Total net unrealized gains (losses) on cash flow hedges
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax
Document Fiscal Year Focus
Document Fiscal Year Focus
Employee benefits
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Employee Benefits
Debt Instrument, Name [Domain]
Debt Instrument, Name [Domain]
Total assets accounted for at fair value
Assets, Fair Value Disclosure
Income (losses) subject to tax in foreign jurisdictions
Income (Loss) from Continuing Operations before Income Taxes, Foreign
4.50% Senior Notes due June 2047
Senior Notes Due In June 2047 [Member]
Senior Notes due in June 2047.
Percentage of investment of most subordinate debt tranche, Maximum
Percentage of Investment of Most Subordinate Debt Tranche of Variable Interest Entity Maximum
Maximum percentage of investment of most subordinate debt tranche of variable interest entity.
Future amortization of intangibles in year five
Finite-Lived Intangible Asset, Expected Amortization, Year Five
Document Period End Date
Document Period End Date
Voting Preferred Stock
Voting Preferred Stock [Member]
Voting preferred stock.
Total lease payments
Lessee, Operating Lease, Liability, to be Paid
Year 1
Year 1, Cumulative
Short-Duration Insurance Contracts, Historical Claims Duration, Year One
Outstanding at January 1, 2024
Outstanding at December 31, 2024
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number
Subordinated debt obligations
Subordinated Debt Obligations [Member]
Asset Class [Axis]
Asset Class [Axis]
Asset Class [Axis]
Insider Trading Arrangements [Line Items]
Real estate, property and equipment
Deferred Tax Liabilities, Real Estate, Property and Equipment
Amount of deferred tax liability attributable to taxable temporary differences from real estate, property, and equipment.
CLO earnings (losses) attributable to AFG
Earnings Losses Of Variable Interest Entities Attributable To Shareholders
Earnings (losses) of variable interest entities attributable to AFG shareholders.
Lease payments due in 2027
Lessee, Operating Lease, Liability, to be Paid, Year Three
Amortized Cost Basis, Fiscal Year Maturity [Abstract]
Debt Securities, Available-for-Sale, Amortized Cost, Fiscal Year Maturity [Abstract]
Short-duration Insurance Contracts, Claim Duration [Axis]
Short-Duration Insurance Contracts, Claim Duration [Axis]
Issuances of managed investment entities’ liabilities
Proceeds From Issuance Of Managed Investment Entities
Proceeds from issuance of managed investment entities.
Document Transition Report
Document Transition Report
Provision for losses and LAE occurring in the current year
Current Year Claims and Claims Adjustment Expense
Purchases of other investments
Payments to Acquire Other Investments
Effect of dividends received deduction
Effective Income Tax Rate Reconciliation, Deduction, Dividends, Amount
Fair Value, Recurring and Nonrecurring [Table]
Fair Value, Recurring and Nonrecurring [Table]
Entity Current Reporting Status
Entity Current Reporting Status
Year 5
Short-Duration Insurance Contracts, Historical Claims Duration, Year Five
Dividends payments without violating the most restrictive debt covenants, minimum
Dividend Payments Without Violating Most Restrictive Debt Covenants
Amount of dividends that could be paid as of the balance sheet date without violating the most restrictive debt covenants.
Retained Earnings
Retained Earnings [Member]
Other operating lease liability information
Lessee, Operating Lease, Liability, Other Lease Information [Table Text Block]
Tabular disclosure of other operating lease liability information
Investment income
Gross Investment Income, Operating
Net earned premiums
Premiums earned
Net earned premiums
Premiums Earned, Net
Real Estate, Type of Property [Axis]
Real Estate, Type of Property [Axis]
Change in fair value of fixed maturities
Debt Securities, Trading and Convertible, Gain (Loss)
The change in fair value of debt securities classified as trading or derivatives embedded in convertible fixed maturities.
Foreign currency translation adjustments, pretax
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, before Tax
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Executive Category:
Executive Category [Axis]
Components of income tax provision (credit)
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]
Income Statement Location [Domain]
Statement of Income Location, Balance [Domain]
AFG's internal investment professionals
Number Of Internal Investment Professionals
Number of internal investment professionals.
Purchases of fixed maturities
Payments to Acquire Debt Securities, Available-for-Sale
Company Selected Measure Name
Company Selected Measure Name
Secured Overnight Financing Rate (SOFR) [Member]