Real estate-related investments
Equity Method Investments, Real Estate-related Investments [Member]
Equity Method Investments, Real Estate-related Investments
Provision for expected credit losses on securities with no previous allowance
Debt Securities, Available-for-Sale, Allowance for Credit Loss, Not Previously Recorded
Other
Corporate Segment and Other Operating Segment [Member]
Distributions
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]
Debt and Equity Securities, FV-NI [Line Items]
Debt and Equity Securities, FV-NI [Line Items]
Statistical Measurement [Domain]
Statistical Measurement [Domain]
Gross unrealized losses on fixed maturities
Fixed maturities, available for sale, gross unrealized, losses
Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Loss, before Tax
Income taxes at statutory rate
Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount
Derivatives, Fair Value [Line Items]
Derivatives, Fair Value [Line Items]
Cover [Abstract]
Cover [Abstract]
Assets of managed investment entities
Variable Interest Entity, Assets
Variable Interest Entity, Assets
Net Change in Cash and Cash Equivalents
Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect
Trading Symbol
Trading Symbol
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]
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
Compensation Actually Paid vs. Net Income
Compensation Actually Paid vs. Net Income [Text Block]
Non-NEOs
Non-NEOs [Member]
Variable interest entity, primary beneficiary
Variable Interest Entity, Primary Beneficiary [Member]
Rule 10b5-1 Arrangement Adopted
Rule 10b5-1 Arrangement Adopted [Flag]
Additions 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)
Dividends (USD per share)
Common Stock, Dividends, Per Share, Declared
Awards Close in Time to MNPI Disclosures
Awards Close in Time to MNPI Disclosures [Table]
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
Goodwill
Goodwill and Intangible Assets, Goodwill, Policy [Policy Text Block]
Mortgage loans
Payments to Acquire Mortgage Notes Receivable
Investments accounted for using the equity method
Equity Method Investments
Pay vs Performance Disclosure [Line Items]
Variable Interest Entity, Ownership [Roll Forward]
Variable Interest Entity, Ownership [Roll Forward]
Progression of the ownership of variable interest entities
Peer Group Total Shareholder Return Amount
Peer Group Total Shareholder Return Amount
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
Residential MBS
Residential MBS
Residential Mortgage-Backed Securities [Member]
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]
Foreign currency translation and other
Liability for Unpaid Claims and Claims Adjustment Expense, Foreign Currency Translation Gain (Loss)
Collateral receivable supporting swaps
Derivative Liability, Not Subject to Master Netting Arrangement, Collateral, Right to Reclaim Cash
Receivable for collateral posted related to interest rate swap liabilities
Non-Rule 10b5-1 Arrangement Adopted
Non-Rule 10b5-1 Arrangement Adopted [Flag]
Property and transportation
Specialty Property And Transportation Insurance [Member]
Specialty Property and transportation.
Hedging Relationship [Domain]
Hedging Relationship [Domain]
Derivatives included in the Balance Sheet at fair value
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]
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]
Realized gains (losses) on securities
Realized gains on securities
Realized Gains (Losses) On Securities [Member]
Primary financial statement caption encompassing realized gains (losses) on securities.
Investment, Name [Domain]
Investment, Name [Domain]
Other Performance Measure, Amount
Other Performance Measure, Amount
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
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
Portion at fair value measurement
Portion at Fair Value Measurement [Member]
Common Stock, shares outstanding (shares)
Beginning Balance (shares)
Ending Balance (shares)
Common Stock, Shares, Outstanding
Dividend reinvestment plan (shares)
Stock Issued During Period, Shares, Dividend Reinvestment Plan
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]
Segments of Operations
Segment Reporting, Policy [Policy Text Block]
Gross losses
Debt Securities, Available-for-Sale, Realized Loss
Other benefit plans
Stock Issued During Period, Value, Employee Benefit Plan
Entity Tax Identification Number
Entity Tax Identification Number
Schedule of long-term debt instruments
Schedule of Long-Term Debt Instruments [Table Text Block]
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Assets and liabilities measured at fair value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Abstract]
Other benefit plans (shares)
Stock Issued During Period, Shares, Employee Benefit Plan
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]
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]
Award Timing Method
Award Timing Method [Text Block]
Trading Arrangements, by Individual
Trading Arrangements, by Individual [Table]
Fixed maturities, available for sale at fair value (amortized cost — $10,788 and $10,687; allowance for expected credit losses of $41 and $34)
Available for sale (AFS) fixed maturities
Debt Securities, Available-for-Sale
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]
Financial assets, Beginning Balance
Financial assets, Ending Balance
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value
States, municipalities and political subdivisions
State and municipal
US States and Political Subdivisions Debt Securities [Member]
Face amount of managed investment entities liabilities purchased 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.
Other lines
Other Lines [Member]
Other lines.
Net investment income
Investment Income [Member]
Adjustment to Compensation, Amount
Adjustment to Compensation Amount
Investments [Domain]
Investments [Domain]
Capital surplus
Additional Paid in Capital, Common Stock
Net unrealized gains (losses) on securities:
Debt Securities, Unrealized Gain (Loss) [Abstract]
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
Maturities and redemptions of fixed maturities
Proceeds from Maturities, Prepayments and Calls of Debt Securities, Available-for-Sale
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]
Total net unrealized gains (losses) on cash flow hedges, pretax
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, before Tax
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]
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]
Effect of stock-based compensation
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-Based Payment Arrangement, Amount
Other liabilities — derivatives
Other Liabilities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-Sale [Line Items]
Anti-dilutive potential common shares related to stock-based compensation plans (shares)
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount
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]
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.
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.
Cash and cash equivalents at beginning of period
Cash and cash equivalents at end of period
Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents
Total return swap
Total Return Swap [Member]
Unpaid losses and loss adjustment expenses
Balance at beginning of year
Gross unpaid losses and LAE included in the balance sheet at end of period
Liability for Claims and Claims Adjustment Expense
Equity securities, at fair value
Equity securities
Equity Securities, FV-NI, Current
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
Consolidation Items [Axis]
Consolidation Items [Axis]
Aggregate unpaid principal balance of variable interest entity 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]
Other comprehensive income, net of tax:
Other Comprehensive Income (Loss), Net of Tax [Abstract]
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.
Entity Information [Line Items]
Entity Information [Line Items]
Employee Stock Option
Share-Based Payment Arrangement, Option [Member]
Debt Securities, Available-for-sale [Table]
Debt Securities, Available-for-Sale [Table]
Fair Value Disclosures [Abstract]
Fair Value Disclosures [Abstract]
Net decrease in the provision for claims of prior years
Prior Year Claims and Claims Adjustment Expense
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 (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
Security Exchange Name
Security Exchange Name
Interest rate on revolving debt facility
Debt Instrument, Basis Spread on Variable Rate
Available for sale fixed maturity securities by contractual maturity date
Investments Classified by Contractual Maturity Date [Table Text Block]
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
Award Type [Axis]
Award Type [Axis]
Roll forward of allowance for credit losses on fixed maturity securities
Debt Securities, Available-for-Sale, Allowance for Credit Loss [Table Text Block]
Corporate and other
Corporate and other
Corporate Debt Securities [Member]
Earnings per Common Share:
Earnings Per Share, Basic [Abstract]
Fixed maturities
Total fixed maturities
Fixed Maturities [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)
Effect of tax exempt interest
Effective Income Tax Rate Reconciliation, Tax Exempt Income, Amount
Total liabilities
Liabilities
Available for sale securities in a continuous unrealized loss position
Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss [Abstract]
Forgone Recovery, Explanation of Impracticability
Forgone Recovery, Explanation of Impracticability [Text Block]
Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table]
Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table]
Realized (gains) losses on investing activities
Realized Investment Gains (Losses)
Expiration Date
Trading Arrangement Expiration Date
Prepaid reinsurance premiums
Prepaid Reinsurance Premiums
Sales and settlements
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales
Investing Activities:
Net Cash Provided by (Used in) Investing Activities [Abstract]
Subsegments [Axis]
Subsegments [Axis]
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets Disclosure [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]
Other assets
Other Assets [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]
Revolving credit line
Line of Credit Facility, Maximum Borrowing Capacity
Transfer out of Level 3
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers out of Level 3
Effect of tax exempt interest as a percentage of EBT
Effective Income Tax Rate Reconciliation, Tax Exempt Income, Percent
Gross gains
Debt Securities, Available-for-Sale, Realized Gain
Derivative liability
Derivative Liability
Insurance Loss Reserves [Abstract]
Insurance Loss Reserves [Abstract]
Insider Trading Policies and Procedures Adopted
Insider Trading Policies and Procedures Adopted [Flag]
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
Debt Instrument [Line Items]
Debt Instrument [Line Items]
Named Executive Officers, Footnote
Named Executive Officers, Footnote [Text Block]
Other assets
Other Assets
Common Stock, shares authorized (shares)
Common Stock, Shares Authorized
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
Purchases of:
Payments for Investing Activities [Abstract]
Basis of Presentation
Basis of Accounting, Policy [Policy Text Block]
Insurance [Abstract]
Insurance [Abstract]
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
Transfer into Level 3
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3
Write-offs charged against the allowance
Premium Receivable, Allowance for Credit Loss, Writeoff
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.
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]
Long-term Debt, Type [Axis]
Long-Term Debt, Type [Axis]
Total shareholders’ equity
Equity, Attributable to Parent
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
Hedging Designation [Domain]
Hedging Designation [Domain]
Reclassification adjustment for investment income included in net earnings, pretax
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax
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 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
Sales of other investments
Proceeds from Sale and Maturity of Other Investments
Other comprehensive income
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent
Fair value as 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 amount of unrealized loss) of available for sale fixed maturities that are in an 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.
Document Fiscal Period Focus
Document Fiscal Period Focus
Scheduled principal payments on debt in year four
Long-Term Debt, Maturity, Year Four
All Executive Categories
All Executive Categories [Member]
Scheduled principal payments on debt thereafter
Long-Term Debt, Maturity, after Year Five
Weighted average common shares adjustment related to stock-based compensation (shares)
Incremental Common Shares Attributable to Dilutive Effect of Share-Based Payment Arrangements
Interest and Amortization [Domain]
Interest and Amortization [Domain]
Interest and Amortization [Domain]
Equity securities
Equity Securities [Member]
Repayments of mortgage loans
Proceeds from Sale and Collection of Mortgage Notes Receivable
Accumulated net investment gain (loss) attributable to parent
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member]
Changed Peer Group, Footnote
Changed Peer Group, Footnote [Text Block]
Assets:
Assets [Abstract]
Fair Value, by Balance Sheet Grouping [Table]
Fair Value, by Balance Sheet Grouping [Table]
Other comprehensive income, net of tax
Other Comprehensive Income (Loss), Net of Tax
Document Type
Document Type
Derivative Contract [Domain]
Derivative Contract [Domain]
Earnings (losses) on derivatives
Gain (Loss) on Derivative Instruments, Net, Pretax
Schedule of Investment Income, Reported Amounts, by Category [Table]
Investment Income [Table]
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
Pension Benefits Adjustments, Footnote
Pension Benefits Adjustments, Footnote [Text Block]
Segment reporting information, by segment
Schedule of Segment Reporting Information, by Segment [Table 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)
Restricted Common Stock, shares issued (shares)
Stock Issued During Period, Shares, Restricted Stock Award, Gross
Total pension and OPRP adjustments, tax
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, Tax
Gross realized gains and losses on available for sale fixed maturity and equity security investments
Schedule of Realized Gain (Loss) [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 year
Net liability at end of period
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 maturities, available for sale, amortized cost
Debt Securities, Available-for-Sale, Amortized Cost
Depreciation and amortization
Depreciation, Amortization and Accretion, Net
Sales
Proceeds Received Related to Sales of Managed Investment Entities Liabilities
Proceeds received related to sales of managed investment entities liabilities during the period
Total
Parent [Member]
Net of tax
Net of tax [Member]
Net of tax
AFG
Parent Company [Member]
Managed by third parties
Managed by Third Parties [Member]
Managed by third parties
Maximum
Maximum
Maximum [Member]
Amortization of intangible assets
Amortization of Intangible Assets
Common Stock, par value (USD per share)
Common Stock, No Par Value
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 property and casualty insurance 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]
Accounting Policies [Abstract]
Accounting Policies [Abstract]
Revenues:
Revenues [Abstract]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table]
Current Fiscal Year End Date
Current Fiscal Year End Date
Proceeds from:
Proceeds from Investing Activities [Abstract]
Statistical Measurement [Axis]
Statistical Measurement [Axis]
PEO Name
PEO Name
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
Award Type [Domain]
Award Type [Domain]
Deferred Policy Acquisition Costs (“DPAC”)
Deferred Policy Acquisition Costs, Policy [Policy Text Block]
Name
Outstanding Recovery, Individual Name
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.
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
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]
Payments for losses and LAE of:
Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid [Abstract]
Fixed maturities, trading at fair value
Trading fixed maturities
Debt Securities, Trading
Hedging Relationship [Axis]
Hedging Relationship [Axis]
Award Timing Predetermined
Award Timing Predetermined [Flag]
Cash dividends paid on Common Stock
Payments of Ordinary Dividends, Common Stock
Class of Stock [Line Items]
Class of Stock [Line Items]
Investment, Name [Axis]
Investment, Name [Axis]
Effect of other income
Effective Income Tax Rate Reconciliation, Other Adjustments, Amount
Long-Term Debt
Long-Term Debt [Text Block]
Total diluted earnings (USD per share)
Earnings Per Share, Diluted
Class of Stock [Axis]
Class of Stock [Axis]
Provision (credit) for expected credit losses
Premium Receivable, Credit Loss Expense (Reversal)
Changes in the goodwill
Goodwill, Period Increase (Decrease)
Accumulated amortization
Finite-Lived Intangible Assets, Accumulated Amortization
Name
Measure Name
Entity Interactive Data Current
Entity Interactive Data Current
Restatement does not require Recovery
Restatement Does Not Require Recovery [Text Block]
Sales of fixed maturities
Proceeds from Sale of Debt Securities, Available-for-Sale
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]
Statement of Financial Position [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 (loss)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings
Insurance
Insurance Disclosure [Text Block]
Accumulated defined benefit plans adjustment attributable to parent
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
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
Income Tax Expense (Benefit)
Percentage (based on fair value) of available for sale fixed maturities that are in an 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.
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Interest rate on debt instruments
Debt Instrument, Interest Rate, Stated Percentage
Derivative, notional amount
Derivative, Notional Amount
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.
Schedule of Investments [Line Items]
Schedule of Investments [Line Items]
Other assets
Other assets
Derivative Asset
Investment income
Investment Income of Managed Investment Entities
Investment income of managed investment entities.
Fixed maturities without single maturity date
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
Reinsurance Recoverable, Allowance for Credit Loss [Roll Forward]
Reinsurance Recoverable, Allowance for Credit Loss [Roll Forward]
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 collateralized loan obligation entities formed during the period
Number Of Collateralized Loan Obligation Entities Formed During The Period
Number of collateralized loan obligation entities formed during the period.
Liabilities of managed investment entities
Variable Interest Entity, Liabilities
Variable Interest Entity, Liabilities
Statement of Comprehensive Income [Abstract]
Statement of Comprehensive Income [Abstract]
Provision for income taxes as shown on the Statement of Earnings as a percentage of EBT
Effective Income Tax Rate Reconciliation, Percent
Net cash provided by (used in) investing activities
Net Cash Provided by (Used in) Investing Activities
Earnings before income taxes
Earnings before income taxes (“EBT”)
Operating Income (Loss)
Interest charges on borrowed money
Interest Expense, Operating and Nonoperating
Effect of stock-based compensation as a percentage of EBT
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-Based Payment Arrangement, Percent
Number of segments
Number of Reportable Segments
Total liabilities and shareholders’ equity
Liabilities and Equity
Other operating activities, net
Other Operating Activities, Cash Flow Statement
Rule 10b5-1 Arrangement Terminated
Rule 10b5-1 Arrangement Terminated [Flag]
All Adjustments to Compensation
All Adjustments to Compensation [Member]
Fair Value Hierarchy and NAV [Axis]
Fair Value Hierarchy and NAV [Axis]
Investments accounted for using the equity method
Equity Method Investments [Table Text Block]
Hedging Designation [Axis]
Hedging Designation [Axis]
Derivatives
Derivative Instruments and Hedging Activities Disclosure [Text Block]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies Disclosure [Abstract]
Unfunded commitments to limited partnerships
Unfunded Commitments To Limited Partnerships
Represents commitments to fund credit facilities and contribute capital to certain limited partnership investments at a future date.
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.
Underlying Security Market Price Change
Underlying Security Market Price Change, Percent
Individual:
Individual [Axis]
Accumulated Other Comp. Income (Loss)
AOCI attributable to parent
AOCI Attributable to Parent [Member]
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.
Fixed maturities, available-for-sale securities, accumulated gross unrealized gain (loss), before tax
Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain (Loss), before Tax
Accumulated gain (loss), net, cash flow hedge, parent
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]
Long-term Debt, Type [Domain]
Long-Term Debt, Type [Domain]
Dividends [Domain]
Dividends [Domain]
Retained earnings
Retained Earnings, Unappropriated
Entity Address, State or Province
Entity Address, State or Province
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
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
Impairment allowance on mortgage loans and other investments
Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease)
Retirements of managed investment entities’ liabilities
Retirement Of Managed Investment Entities Liabilities
Retirement of managed investment entities' liabilities.
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
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.
Financial Instruments [Domain]
Financial Instruments [Domain]
Liabilities and Equity:
Liabilities and Equity [Abstract]
Financial liabilities, Beginning Balance
Financial liabilities, Ending Balance
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value
Impairment allowance on fixed maturity securities
Debt Securities, Available-for-Sale, Allowance for Credit Loss, Period Increase (Decrease)
Derivatives
Derivatives, Policy [Policy Text Block]
Credit Losses on Financial Instruments
Credit Loss, Financial Instrument [Policy Text Block]
Changes in balances of Level 3 financial assets
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]
Minimum
Minimum [Member]
Restatement Determination Date
Restatement Determination Date
Fair Value
Estimate of Fair Value Measurement [Member]
Multifamily
Multifamily [Member]
Net investment income
Net investment income
Net investment income
Net Investment Income
Adoption Date
Trading Arrangement Adoption Date
Pay vs Performance Disclosure
Pay vs Performance Disclosure [Table]
Other receivables
Other Receivables
Available for sale fixed maturities
Schedule of Available-for-Sale Securities Reconciliation [Table Text Block]
After five years through ten years
Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10
Operating lease right-of-use asset
Operating Lease, Right-of-Use Asset
Erroneously Awarded Compensation Recovery
Erroneously Awarded Compensation Recovery [Table]
Foreign currency translation adjustments, tax
Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax
Variable Interest Entity [Line Items]
Variable Interest Entity [Line Items]
Interest and Amortization [Axis]
Interest and Amortization [Axis]
Interest and amortization
Business Segments [Axis]
Segments [Axis]
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 [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
Premium Recognition
Insurance Premiums Revenue Recognition, Policy [Policy Text Block]
Arrangement Duration
Trading Arrangement Duration
Shares issued:
Shares Issued [Abstract]
Shares issued.
Exercise of stock options
Stock Issued During Period, Value, Stock Options Exercised
Total pension and OPRP 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]
Realized gains on securities
Realized gains 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.
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
Shareholders’ equity:
Equity, Attributable to Parent [Abstract]
Fair value per share of restricted Common Stock issued under Stock Incentive Plan (USD per share)
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value
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
Subsegments [Domain]
Subsegments [Domain]
Derivative Asset, Statement of Financial Position [Extensible Enumeration]
Derivative Asset, Statement of Financial Position [Extensible Enumeration]
Income Taxes
Income Tax, Policy [Policy Text Block]
Peer Group Issuers, Footnote
Peer Group Issuers, Footnote [Text Block]
Other income
Other Income
Segments [Domain]
Segments [Domain]
Other comprehensive income (loss), tax
Other Comprehensive Income (Loss), Tax
Dividends
Dividend Income, Operating
Material Terms of Trading Arrangement
Material Terms of Trading Arrangement [Text Block]
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]
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]
Income Tax Disclosure [Abstract]
Income Tax Disclosure [Abstract]
Entities [Table]
Entities [Table]
Purchases
Amount Of Managed Investment Entities Liabilities Purchased During the Period
Amount of managed investment entities liabilities purchased during the period
Name
Trading Arrangement, Individual Name
Real estate and other investments
Other Investments
Difference between aggregate unpaid principal balance and carrying 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]
Change in unrealized
Change In Unrealized Appreciation Depreciation
Change in unrealized appreciation depreciation.
Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table]
Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table]
Reclassification adjustment for realized (gains) losses included in net earnings, tax
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax
Number of collateralized loan obligation entities
Number of Collateralized Loan Obligation Entities
Number of collateralized loan obligation entities.
Fixed maturities, available for sale, gross unrealized, gains
Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain, before Tax
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.
Scheduled principal payments on debt remainder of fiscal year
Long-Term Debt, Maturity, Remainder of Fiscal Year
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.
Awards Close in Time to MNPI Disclosures, Table
Awards Close in Time to MNPI Disclosures [Table Text Block]
Assets:
Assets, Fair Value Disclosure [Abstract]
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.
Local Phone Number
Local Phone Number
Transfer out of Level 3
Fair Value, Measurement with Unobservable Inputs Reconciliation, Liability, Transfers out of Level 3
Liability Class [Axis]
Liability Class [Axis]
Aggregate Erroneous Compensation Not Yet Determined
Aggregate Erroneous Compensation Not Yet Determined [Text Block]
Number of fixed maturity securities in an unrealized loss position
Debt Securities, Available-for-Sale, Unrealized Loss Position, Number of Positions
Earnings before realized gains 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 ESOP dividend paid deduction
Effective Income Tax Rate Reconciliation, Deduction, Employee Stock Ownership Plan Dividend, Amount
Other assets
Increase (Decrease) in Other Operating Assets
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
PEO Total Compensation Amount
PEO Total Compensation Amount
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net unrealized gains (losses) on securities:
OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment and Tax [Abstract]
Total pension and OPRP adjustments, after Tax
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax
Real Estate [Domain]
Real Estate [Domain]
Equity securities, at cost
Equity Securities, FV-NI, Cost
Forfeitures of restricted stock (shares)
Stock Issued During Period, Shares, Restricted Stock Award, Forfeited
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.
Income Statement Location [Axis]
Statement of Income Location, Balance [Axis]
Contingencies
Commitments and Contingencies Disclosure [Text Block]
Debt Disclosure [Abstract]
Debt Disclosure [Abstract]
Common Stock
Common Shares
Common stocks
Common Stock [Member]
Measure:
Measure [Axis]
Unearned premiums
Unearned Premiums
Average life of ABS
Collateralized Loan Obligations and Other Asset-Backed Securities Average Useful Life
Collateralized loan obligations and Other asset-backed securities average useful life.
Fair Value by Asset Class [Domain]
Asset Class [Domain]
Investments:
Investments [Abstract]
Preferred Stock, shares authorized (shares)
Preferred Stock, Shares Authorized
Forgone Recovery due to Expense of Enforcement, Amount
Forgone Recovery due to Expense of Enforcement, Amount
Changes in balances of Level 3 financial liabilities
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]
Change in fair value
Change in Fair Value of Ownership of Managed Investment Entities Liabilities
Change in fair value of ownership of managed investment entities liabilities
Selected financial information related to collateralized loan obligations
Financial Information Related to Collateralized Loan Obligations [Abstract]
Financial information related to collateralized loan obligations.
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
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]
Balance at beginning of period of ownership of CLO tranches
Balance at end of period of ownership of CLO tranches
Variable Interest Entity, Primary Beneficiary, Maximum Loss Exposure, Amount
Total liabilities accounted for at fair value
Liabilities, Fair Value Disclosure
Segment Reporting [Abstract]
Segment Reporting [Abstract]
Expenses of managed investment entities
Expenses of Managed Investment Entities
Expenses of managed investment entities.
Entity Central Index Key
Entity Central Index Key
Scheduled principal payments on debt in year five
Long-Term Debt, Maturity, Year Five
Private equity
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]
Non-GAAP Measure Description
Non-GAAP Measure Description [Text Block]
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.
Non-PEO NEO Average Compensation Actually Paid Amount
Non-PEO NEO Average Compensation Actually Paid Amount
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
Shareholders' Equity
Equity [Text Block]
Award Timing, How MNPI Considered
Award Timing, How MNPI Considered [Text Block]
Equity Component [Domain]
Equity Component [Domain]
Financial Instrument [Axis]
Financial Instrument [Axis]
Segments of Operations
Segment Reporting Disclosure [Text Block]
Net unrealized gains (losses) on cash flow hedges:
Reclassification of Cash Flow Hedge Gain (Loss) [Abstract]
Recoverables from reinsurers
Reinsurance Recoverable for Paid and Unpaid Claims and Claims Adjustments
Total realized/unrealized gains (losses) included in Net income
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Earnings
Additional 402(v) Disclosure
Additional 402(v) Disclosure [Text Block]
Stock-based compensation expense
APIC, Share-Based Payment Arrangement, Increase for Cost Recognition
Restricted Stock
Restricted Stock [Member]
Entity Shell Company
Entity Shell Company
Measurement Basis [Axis]
Measurement Basis [Axis]
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]
Title
Trading Arrangement, Individual Title
Consolidated Entities [Axis]
Consolidated Entities [Axis]
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
Total pretax
Pretax [Member]
Total Pretax.
Selected financial information related to collateralized loan obligations
Schedule of Variable Interest Entities [Table Text Block]
Consolidation Items [Domain]
Consolidation Items [Domain]
Managed Investment Entities
Consolidation, Variable Interest Entity, Policy [Policy Text Block]
City Area Code
City Area Code
Debt Securities, Available-for-sale, Allowance for Credit Loss [Table]
Debt Securities, Available-for-Sale, Allowance for Credit Loss [Table]
Fair value of potential contingent consideration
Business Combination, Contingent Consideration, Liability
Effect of ESOP dividend paid deduction as a percentage of EBT
Effective Income Tax Rate Reconciliation, Deduction, Employee Stock Ownership Plan Dividend, Percent
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
Level 1
Fair Value, Inputs, Level 1 [Member]
Stockholders' Equity Note [Abstract]
Stockholders' Equity Note [Abstract]
Foreign currency translation adjustments
Foreign currency translation adjustments, after tax
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax
Other expenses
Other Expense [Member]
Common Stock and Capital Surplus
Common Stock Including Additional Paid in Capital [Member]
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]
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
Scheduled principal payments on debt in year three
Long-Term Debt, Maturity, Year Three
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]
Schedule of Long-term Debt Instruments [Table]
Schedule of Long-Term Debt Instruments [Table]
Financial assets:
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
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
Schedule of Segment Reporting Information, by Segment [Table]
Schedule of Segment Reporting Information, by Segment [Table]
Change in accrued interest
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
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
Trading fixed maturities
Trading Fixed Maturities [Member]
Trading fixed maturities
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
Effect of nondeductible expenses
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Amount
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]
Shares acquired and retired (shares)
Stock Repurchased and Retired During Period, Shares
Other
Other Long-Term Investments [Member]
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
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.
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 collateralized loan obligation entities 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.
Net unrealized gains (losses) on cash flow hedges:
Summary of Cash Flow Hedge Activity [Abstract]
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
Debt Issuance Costs
Debt, Policy [Policy Text Block]
Equity Awards Adjustments
Equity Awards Adjustments [Member]
Allowance for Credit Losses [Roll Forward]
Debt Securities, Available-for-Sale, Allowance for Credit Loss [Roll Forward]
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)
Operating lease liability
Operating Lease, Liability
Net cash used in financing activities
Net Cash Provided by (Used in) Financing Activities
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.
Dividends
Dividends, Common Stock, Cash
Amendment Flag
Amendment Flag
Carrying Value
Reported Value Measurement [Member]
Entity Registrant Name
Entity Registrant Name
Subordinated Debentures
Subordinated Debt [Member]
Commercial MBS
Commercial MBS
Commercial Mortgage-Backed Securities [Member]
Adjustment to Non-PEO NEO Compensation Footnote
Adjustment to Non-PEO NEO Compensation Footnote [Text Block]
Stock Appreciation Rights (SARs)
Stock Appreciation Rights (SARs) [Member]
Less reinsurance recoverables, net of allowance
Add back reinsurance recoverables, net of allowance
Reinsurance Recoverable for Unpaid Claims and Claims Adjustments
Debt Securities, Trading, and Equity Securities, FV-NI [Table]
Debt Securities, Trading, and Equity Securities, FV-NI [Table]
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
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
Level 2
Fair Value, Inputs, Level 2 [Member]
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
Level 3 assets as a percentage of total assets measured at fair value
Level Three Assets As Percentage Of Assets Measured At Fair Value
Level three assets as a percentage of assets measured at fair value
Interest rate swaps
Interest Rate Swap [Member]
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]
Specialty casualty
Specialty Casualty Insurance [Member]
Specialty casualty.
Payable to reinsurers
Increase (Decrease) in Reinsurance Payables
Title of 12(b) Security
Title of 12(b) Security
Common Stock, no par value — 200,000,000 shares authorized — 83,668,453 and 83,978,258 shares outstanding
Common Stock, Value, Issued
Cash and cash equivalents
Cash and Cash Equivalents, at Carrying Value
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]
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]
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
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]
Financing Activities:
Net Cash Provided by (Used in) Financing Activities [Abstract]
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]
Stock Incentive Plan
Share-Based Payment Arrangement [Member]
Operating lease liability, current, Statement of Financial Position
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]
Long-term Debt, Fiscal Year Maturity [Abstract]
Long-Term Debt, Fiscal Year Maturity [Abstract]
Fair Value Measurement [Domain]
Fair Value Measurement [Domain]
Total basic earnings (USD per share)
Earnings Per Share, Basic
Issuances of Common Stock
Proceeds from Issuance of Common Stock
Cash and cash equivalents
Cash and Cash Equivalents [Member]
Adjustment To PEO Compensation, Footnote
Adjustment To PEO Compensation, Footnote [Text Block]
Award Timing MNPI Disclosure
Award Timing MNPI Disclosure [Text Block]
Gross realized gains and losses on the sale of available for sale fixed maturity and equity security investments
Debt Securities, Available-for-Sale, Realized Gain (Loss) [Abstract]
5.875% Subordinated Debentures due March 2059
Subordinated Debentures Due In March 2059 [Member]
Subordinated Debentures Due In March 2059
Aggregate Pension Adjustments Service Cost
Aggregate Pension Adjustments Service Cost [Member]
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
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.
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]
Average number of Common Shares:
Weighted Average Number of Shares Outstanding, Diluted [Abstract]
Total assets
Total assets
Assets
Amount borrowed under revolving credit facility
Long-Term Line of Credit
Reclassification adjustment for investment income included in net earnings, tax
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, Tax
Specialty financial
Specialty Financial Insurance [Member]
Specialty Financial.
U.S. government and government agencies
U.S. government agency
US Treasury and Government [Member]
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.
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]
Total revenues
Revenues
Scheduled principal payments on debt in year one
Long-Term Debt, Maturity, Year One
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.
Other liabilities
Other Liabilities
Not designated as hedging instrument
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.
Entity Address, City or Town
Entity Address, City or Town
After one year through five years
Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year One Through Five
Leases
Lessee, Leases [Policy Text Block]
Debt Instrument [Axis]
Debt Instrument [Axis]
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]
Payable to reinsurers
Reinsurance Payable
Compensation expense related to stock incentive plans
Share-Based Payment Arrangement, Expense
Dividends [Axis]
Dividends [Axis]
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]
Investments, Debt and Equity Securities [Abstract]
Investments, Debt and Equity Securities [Abstract]
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
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]
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)
Liabilities:
Liabilities, Fair Value Disclosure [Abstract]
Total net unrealized gains (losses) on cash flow hedges
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax
Consolidated Entities [Domain]
Consolidated Entities [Domain]
Document Fiscal Year Focus
Document Fiscal Year Focus
Income Statement [Abstract]
Income Statement [Abstract]
Entity Address, Address Line One
Entity Address, Address Line One
Debt Instrument, Name [Domain]
Debt Instrument, Name [Domain]
Total assets accounted for at fair value
Assets, Fair Value Disclosure
Name
Forgone Recovery, Individual Name
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.
Document Period End Date
Document Period End Date
Investments
Investment, Policy [Policy Text Block]
Award Timing MNPI Considered
Award Timing MNPI Considered [Flag]
Fixed maturities without single maturity date
Debt Securities, Available-for-Sale, Maturity, without Single Maturity Date, Fair Value
Voting Preferred Stock
Voting Preferred Stock [Member]
Voting preferred stock.
Premium Receivable, Allowance for Credit Loss [Roll Forward]
Premium Receivable, Allowance for Credit Loss [Roll Forward]
Provision (credit) for expected credit losses
Reinsurance Recoverable, Credit Loss Expense (Reversal)
Dividend reinvestment plan
Stock Issued During Period, Value, Dividend Reinvestment Plan
Subordinated debt obligations
Subordinated Debt Obligations [Member]
Asset Class [Axis]
Asset Class [Axis]
Insider Trading Arrangements [Line Items]
CLO earnings attributable to AFG
Earnings Losses Of Variable Interest Entities Attributable To Shareholders
Earnings (losses) of variable interest entities attributable to AFG shareholders.
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
Amortized Cost Basis, Fiscal Year Maturity [Abstract]
Debt Securities, Available-for-Sale, Amortized Cost, Fiscal Year Maturity [Abstract]
Equity securities reported at fair value
Marketable Securities [Table Text Block]
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.
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
Document Quarterly Report
Document Quarterly Report
Provision for losses and LAE occurring in the current period
Current Year Claims and Claims Adjustment Expense
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
Other investments
Payments to Acquire Other Investments
Fair Value, Recurring and Nonrecurring [Table]
Fair Value, Recurring and Nonrecurring [Table]
Accumulated other comprehensive income (loss), net of tax
Accumulated Other Comprehensive Income (Loss), Net of Tax
Entity Current Reporting Status
Entity Current Reporting Status
Purchases and issuances
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases
Retained Earnings
Retained Earnings [Member]
Average life of MBS
Mortgage Backed Securities Average Useful Life
Mortgage backed securities average useful life.
Pension Adjustments Service Cost
Pension Adjustments Service Cost [Member]
Investment income
Gross Investment Income, Operating
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
Net earned premiums
Premiums Earned, Net
Real Estate, Type of Property [Axis]
Real Estate, Type of Property [Axis]
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.
Beginning Balance
Ending Balance
Equity, Including Portion Attributable to Noncontrolling Interest
Change in fair value of fixed maturity securities
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]
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
Entity Filer Category
Entity Filer Category
Fixed maturities with embedded derivatives
Fixed Maturity Securities with Embedded Derivatives [Member]
Fixed maturity securities with embedded derivatives.
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.
Fixed maturities
Payments to Acquire Debt Securities, Available-for-Sale
Company Selected Measure Name
Company Selected Measure Name
Secured Overnight Financing Rate (SOFR) [Member]