Beginning balance Ending balance Liability for Future Policy Benefit, Expected Future Policy Benefit, before Reinsurance, after Discount Rate Change Beginning balance Ending balance Liability for Future Policy Benefit, Expected Net Premium, before Reinsurance, after Discount Rate Change Net premiums written and contract deposits, direct amount Direct Insurance Premiums Written And Contract Deposits The sum of insurance premiums written for all insurance contracts before subtracting any amounts ceded to another insurer or adding premiums assumed from other insurers plus contract deposits on investment and universal life-type contracts. Statistical Measurement [Domain] Statistical Measurement [Domain] Credit loss impairments Debt Securities, Available-for-Sale, Allowance for Credit Loss, Writeoff Net investment losses Net investment gains (losses) Realized Investment Gains (Losses) Increase (decrease) in estimated reserves for claims occurring in prior periods Prior Year Claims and Claims Adjustment Expense Award Timing Predetermined Award Timing Predetermined [Flag] Benefit payments Liability for Future Policy Benefit, Expected Future Policy Benefit, Benefit Payment Schedule of Reconciliation of Net Incurred and Paid Claims Development To Liability for Claims and Claim Adjustment Expenses Schedule of Reconciliation of Net Incurred and Paid Claims Development To Liability for Claims and Claim Adjustment Expenses [Table Text Block] Schedule of Reconciliation of Net Incurred and Paid Claims Development To Liability for Claims and Claim Adjustment Expenses Other Supplement Health Insurance, Other [Member] Supplement Health Insurance, Other Greater Than 150 Basis Points Above Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0151 and Greater [Member] Entity File Number Entity File Number Additional paid-in capital Additional Paid-in Capital [Member] Valuation Approach and Technique [Domain] Valuation Approach and Technique [Domain] Net premiums and contract charges earned, Ceded to other companies Ceded Insurance Premiums And Contract Charges Earned Insurance premiums and contract charges assumed and earned by another insurer as a result of reinsurance arrangements. Net unrealized gains (losses) included in OCI Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Other Comprehensive Income (Loss) Net Amount Reinsurance, Net Amount [Abstract] Reinsurance, Net Amount [Abstract] SPIA (life contingent) DPL SPIA Life Contingent DPL [Member] SPIA Life Contingent DPL Reclassification of net investment losses on fixed maturity securities to net income Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax Tabular List, Table Tabular List [Table Text Block] Unearned premiums Unearned Premiums option budget Measurement Input, Option Budget [Member] Measurement Input, Option Budget [Member] BB Standard & Poor's, BB Rating [Member] Total short-duration insurance contracts Short-Duration Insurance Contracts [Member] Short-Duration Insurance Contracts Future Adoption of New Accounting Standards New Accounting Pronouncements, Policy [Policy Text Block] Lapses, actual experience Liability For Future Policy Benefit, Lapse Rate, Actual Experience Liability For Future Policy Benefit, Lapse Rate, Actual Experience Policy loans Policy Loans Receivable Fixed maturity securities Total Fixed Maturity Securities Debt Securities [Member] Gross Unrealized Losses Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Loss, before Tax Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Measurement Basis [Axis] Measurement Basis [Axis] Basic (in usd per share) Earnings Per Share, Basic Adjustment to Compensation: Adjustment to Compensation [Axis] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Reinsurance balances receivable Reinsurance Receivable Reinsurance Receivable Financial Liabilities Liabilities, Fair Value Disclosure [Abstract] Net premiums and contract charges earned, Assumed from other companies Assumed Insurance Premiums And Contract Charges Earned Insurance premiums and contract charges earned for all insurance contracts assumed from other insurers as a result of reinsurance arrangements. Schedule of Financial Information for these Segments Schedule of Segment Reporting Information, by Segment [Table Text Block] Weighted-average duration Liability for Future Policy Benefit, Weighted-Average Duration Policyholder Account Balance [Roll Forward] Policyholder Account Balance [Roll Forward] Benefits, withdrawals and net transfers to Separate Account variable annuity assets Benefits, Withdrawals And Net Transfers To Separate Account (Variable Annuity) Assets The cash outflow for an insurance contract under which the policy holder makes a lump sum payment or a series of payments in exchange for periodic payments to the policyholder beginning immediately or at some future date and net transfer to separate account (variable annuity) assets. Interest accruals Liability for Future Policy Benefit, Expected Net Premium, Interest Income Schedule of Cash and Cash Equivalents Schedule of Cash and Cash Equivalents [Table Text Block] Measurement Input Type [Domain] Measurement Input Type [Domain] Policyholder Account Balance [Line Items] Policyholder Account Balance [Line Items] Schedule of Available-for-sale Securities Reconciliation Schedule of Available-for-Sale Securities Reconciliation [Table Text Block] Adjustment to Compensation, Amount Adjustment to Compensation Amount 1-50 Basis Points Above Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0001 to 0050 [Member] Consolidation Consolidation, Policy [Policy Text Block] Share-based compensation expense Share-Based Payment Arrangement, Noncash Expense Employee Stock Option Share-Based Payment Arrangement, Option [Member] Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Dividends, 2026, $0.36 per share; 2025, $0.35 per share Dividends, Common Stock, Cash Total shareholders’ equity Beginning of period End of period Equity, Attributable to Parent Other comprehensive income (loss) before reclassifications OCI, before Reclassifications, Net of Tax, Attributable to Parent Debt Securities, Available-for-Sale [Table] Debt Securities, Available-for-Sale [Table] Other comprehensive income (loss), net of tax: Other Comprehensive Income (Loss), Net of Tax [Abstract] Insider Trading Policies and Procedures [Line Items] Common stock, shares authorized (in shares) Common Stock, Shares Authorized Total Total, Percent Of Total Fair Value Available for sale securities debt maturities a percentage of fair value. Taxes, licenses and fees Taxes Licenses And Fees Taxes Licenses And Fees Total liabilities and shareholders’ equity Liabilities and Equity AA Standard & Poor's, AA Rating [Member] Net Funded Status of Benefit Plans Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] Deferred policy acquisition costs Balance, beginning of period Balance, end of period Deferred Policy Acquisition Cost Variable Account Annuities Variable Annuity [Member] Proceeds received Proceeds From Sale And Maturity Of Marketable Securities, Excluding FHLB Repayments Proceeds From Sale And Maturity Of Marketable Securities, Excluding FHLB Repayments Policyholder account balance, above guaranteed minimum crediting rate Policyholder Account Balance, above Guaranteed Minimum Crediting Rate Liabilities and Shareholders' Equity Liabilities and Equity [Abstract] Cover [Abstract] Cover [Abstract] Amounts reclassified from AOCI Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent Portion at Fair Value Measurement Portion at Fair Value Measurement [Member] Fair value as a percentage of total fixed maturities and equity securities fair value, total (percent) Fair Value As Percentage Of Total Fixed Maturities And Equity Securities Fair Value, Total Fair value of positions with a gross unrealized loss as a percentage of total fixed maturities and equities fair value. Maximum Maximum [Member] Asset derivatives: Offsetting Derivative Assets [Abstract] Policyholder Account Balance, above Guaranteed Minimum Crediting Rate [Domain] Policyholder Account Balance, above Guaranteed Minimum Crediting Rate [Domain] Effect of changes in discount rate assumptions AOCI, Liability for Future Policy Benefit, Expected Future Policy Benefit, before Tax Paydowns, maturities and distributions Paydowns, Maturities And Distributions Fair value measurement with unobservable inputs reconciliation recurring basis asset paydowns and maturities. Fixed maturity securities, fair value, total Debt Securities, Available-for-Sale, Unrealized Loss Position Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Paydowns, maturities and distributions Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Paydowns And Maturities Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Paydowns And Maturities Treasury stock, at cost Treasury Stock, Common [Member] Net premiums and contract charges earned Net premiums and contract charges earned, net amount Net premiums and contract charges earned Premiums And Contract Charges Earned, Net Amount The sum of insurance premiums earned, premiums earned on the income statement for all insurance contracts after subtracting any amounts ceded to another insurer and adding premiums assumed from other insurers, plus contract charges earned on investment and universal life-type contracts. Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Pay vs Performance Disclosure [Line Items] Due after 20 years Due After 10 Years Through 20 Years, Fair Value Amount of available-for-sale debt securities at fair value maturing in the eleventh rolling twelve months through the twentieth rolling twelve months following the latest balance sheet presented. External Credit Rating, Standard & Poor's [Domain] External Credit Rating, Standard & Poor's [Domain] Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Financial Liabilities Financial Liabilities Fair Value Disclosure Income before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Entity Shell Company Entity Shell Company Due after 5 years through 10 years Due After 5 Years Through 10 Years, Percent Of Total Fair Value Percentage of fair value of available for sale debt securities maturing in the sixth rolling twelve months through the tenth rolling twelve months following the latest balance sheet presented. Net liability for future policy benefits Liability for Future Policy Benefit, after Reinsurance Property & Casualty Property And Casualty [Member] Product and Casualty [Member] Due after 1 year through 5 years Due After 1 Year Through 5 Years, Percent Of Total Fair Value Percentage of fair value of available for sale debt securities maturing in the second rolling twelve months through the fifth rolling twelve months following the latest balance sheet presented. Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Short-Duration Insurance Contracts, Historical Claims Duration [Line Items] Short-Duration Insurance Contracts, Historical Claims Duration [Line Items] Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Operating Segments Operating Segments [Member] Equal to 2% but less than 3% Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0200 to 0299 [Member] Schedule of Supplemental Cash Flow Information Schedule of Cash Flow, Supplemental Disclosures [Table Text Block] Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Company Selected Measure Amount Company Selected Measure Amount Cash Cash Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Liability for Future Policy Benefit, Expected Net Premium [Roll Forward] Liability for Future Policy Benefit, Expected Net Premium [Roll Forward] 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] Comprehensive income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Measurement Input Type [Axis] Measurement Input Type [Axis] Favorable (unfavorable) development of total reserves for claims occurring in prior years Favorable (Unfavorable) Development Of Total Reserves For Claims Occurring In Prior Years, Net Favorable (Unfavorable) Development Of Total Reserves For Claims Occurring In Prior Years, Net Name Measure Name Deferred Policy Acquisition Cost [Line Items] Deferred Policy Acquisition Cost [Line Items] Issuances Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Issuances Fixed maturity securities maturities, paydowns, calls and redemptions Proceeds from Maturities, Prepayments and Calls of Debt Securities, Available-for-Sale Document Fiscal Period Focus Document Fiscal Period Focus Award Timing Method Award Timing Method [Text Block] Schedule of Reconciliation of Net Unrealized Investment Gains (Losses) on Fixed Maturity Securities and Equity Securities Unrealized Gain (Loss) on Investments [Table Text Block] Award Type Award Type [Axis] Long-term debt Long-Term Debt Legal Entity [Axis] Legal Entity [Axis] Change in net reserve remeasurements attributable to discount rates Change in net reserve remeasurements attributable to discount rates Other Comprehensive Income (Loss), Change In Net Reserve Remeasurements Attributable To Discount Rates, Net of Tax, Portion Attributable to Parent Other Comprehensive Income (Loss), Change In Net Reserve Remeasurements Attributable To Discount Rates, Net of Tax, Portion Attributable to Parent Total assets Assets Assets Internal Internal Pricing Source [Member] Internal Pricing Source Whole life Whole Life Insurance, Including Adjustment Due To Reserve Flooring [Member] Whole Life Insurance, Including Adjustment Due To Reserve Flooring Trading Symbol Trading Symbol Net funded status of benefit plans Accumulated Other Comprehensive (Income) Loss, Defined Benefit Plan, after Tax Balance, beginning of period, before effects of changes in the instrument-specific credit risk Balance, end of period Market Risk Benefit, before Reinsurance and Cumulative Increase (Decrease) from Instrument-Specific Credit Risk Change Benefits, claims and settlement expenses, direct amount Policyholder Benefits and Claims Incurred, Direct Total gains or losses Gain Or Loss Net [Abstract] Gain Or Loss Net [Abstract] Liability Market Risk Benefit, Liability, Amount Cancer Supplement Health Insurance Related To Cancer [Member] Supplement Health Insurance Related To Cancer External Credit Rating by Grouping [Domain] External Credit Rating by Grouping [Domain] Entity Address, City or Town Entity Address, City or Town Cash flows - operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Supplemental health Supplemental Health Insurance [Member] Supplemental Health Insurance Policyholder Account Balance, above Guaranteed Minimum Crediting Rate [Axis] Policyholder Account Balance, above Guaranteed Minimum Crediting Rate [Axis] Private equity funds Private Equity Funds [Member] Reverse repurchase agreement, cash to value percentage Reverse Repurchase Agreement, Cash To Value Percentage Reverse Repurchase Agreement, Cash To Value Percentage Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Financial Assets Assets, Fair Value Disclosure [Abstract] Due after 5 years through 10 years Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Rolling after One Through Five Years, Amortized Cost Entity Emerging Growth Company Entity Emerging Growth Company Gross Amounts Not Offset in the Consolidated Balance Sheets, Financial Instruments Derivative Asset, Subject to Master Netting Arrangement, Deduction of Financial Instrument Not Offset Total segment revenues Revenues, Adjusted Revenues, Adjusted Other investments Other Investments Dividends (in usd per share) Common Stock, Dividends, Per Share, Declared Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Policyholder account balance with a guaranteed minimum crediting rate Policyholder Account Balance, With A Guaranteed Minimum Crediting Rate [Member] Policyholder Account Balance, With A Guaranteed Minimum Crediting Rate Debt Securities, Available-for-Sale [Line Items] Debt Securities, Available-for-Sale [Line Items] 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] Level 2 Fair Value, Inputs, Level 2 [Member] Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Purchases Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Purchases non-performance adjustment Measurement Input, Non-Performance Adjustment [Member] Measurement Input, Non-Performance Adjustment [Member] Deposit asset on reinsurance Deposit Asset On Reinsurance Fair Value Disclosure Deposit Asset On Reinsurance Fair Value Disclosure Limited partnership interests Equity Method Investments [Member] Insurance [Abstract] Insurance [Abstract] Non-core income adjustments (after-tax) Non-Core Income (Loss), Net Of Tax, Adjusted Non-Core Income (Loss), Net Of Tax, Adjusted PEO PEO [Member] Transfers into Level 3 Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3 Expected future benefits and expenses, undiscounted Liability for Future Policy Benefit, Expected Future Policy Benefit, Undiscounted, before Reinsurance Schedule of Distribution of the Company's Fixed Maturity Portfolio by Estimated Expected Maturity Investments Classified by Contractual Maturity Date [Table Text Block] Due after 1 year through 5 years Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Rolling within One Year, Fair Value Other funds Other Funds [Member] Other Funds Corporate & Other Corporate Segment and Other Operating Segment [Member] Changes in: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract] 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] Fair Value Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Rolling Maturity, Fair Value [Abstract] Direct Amount Reinsurance, Gross Amounts [Abstract] Reinsurance, Gross Amounts [Abstract] Retained earnings Retained Earnings [Member] Total claims and claim expense payments Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid Commissions expense Noninterest Expense Commission Expense Entity Address, Postal Zip Code Entity Address, Postal Zip Code Restatement Determination Date Restatement Determination Date Cash at beginning of period Cash at end of period Total cash and restricted cash reported in the Consolidated Statement of Cash Flows Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Income Statement [Abstract] Income Statement [Abstract] Limited-Pay Whole Life Limited Pay Whole Life Insurance [Member] Limited Pay Whole Life Insurance Net Amounts of Assets/ Liabilities Presented in the Consolidated Balance Sheets Derivative Asset Income tax expense Income Tax Expense (Benefit) Separate Account, Liability [Table] Separate Account, Liability [Table] Fixed maturity securities, fair value, more than 12 months Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer Equity securities purchases Payments to Acquire Marketable Securities Net investment income Net Investment Income, Before Realized Investment Gains (Losses) Net Investment Income, Before Realized Investment Gains (Losses) Beginning balance Ending balance Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value Credit Rating, Standard & Poor's [Axis] Credit Rating, Standard & Poor's [Axis] Interest credited Interest credited Policyholder Account Balance, Interest Expense Totals Investments, Fair Value Disclosure Ceded to Other Companies Reinsurance, Ceded to Other Companies [Abstract] Reinsurance, Ceded to Other Companies [Abstract] Preferred stock, shares issued (in shares) Preferred Stock, Shares Issued Intangible assets Intangible Assets, Net (Excluding Goodwill) Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Product and Service [Domain] Product and Service [Domain] Policyholder Account Balance, Guaranteed Minimum Crediting Rate Range [Axis] Policyholder Account Balance, Guaranteed Minimum Crediting Rate Range [Axis] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Fixed maturity securities Debt Securities, Available-for-Sale [Abstract] Transfers out of Level 3 Fair Value, Measurement with Unobservable Inputs Reconciliation, Liability, Transfers out of Level 3 Short-term and other investments Short-term investments and other Short Term And Other Investments [Member] Mortality / Morbidity, actual experience Liability For Future Policy Benefit, Mortality Rate, Actual Experience Liability For Future Policy Benefit, Mortality Rate, Actual Experience B Standard & Poor's, B Rating [Member] Incurred claims and claim expenses: Liability for Unpaid Claims and Claims Adjustment Expense, Incurred Claims [Abstract] Net investment income Total net investment income Net Investment Income Net unrealized investment losses on fixed maturity securities AOCI, Debt Securities, Available-for-Sale, Adjustment, after Tax Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Gross losses realized Equity Securities, FV-NI, Realized Loss Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Policyholder Account Balance, Guaranteed Minimum Crediting Rate Range [Domain] Policyholder Account Balance, Guaranteed Minimum Crediting Rate Range [Domain] Equity securities Equity Securities, FV-NI, Realized Gain (Loss) [Abstract] Federal Home Loan Bank Branch [Domain] Federal Home Loan Bank Branch [Domain] Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Proceeds from exercise of stock options Proceeds from Stock Options Exercised City Area Code City Area Code Schedule of Allowance for Credit Loss Impairments on Fixed Maturity Securities Financing Receivable, Allowance for Credit Loss [Table Text Block] Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] Deposit asset on reinsurance Reinsurance Recoverable for Paid Claims and Claims Adjustments All Trading Arrangements All Trading Arrangements [Member] Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] Settlements Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Settlements Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Fair value as a percentage of total fixed maturities and equity securities fair value, more than 12 months (percent) Fair Value As Percentage Of Total Fixed Maturities And Equity Securities Fair Value More Than 12 Months Fair value of positions with a gross unrealized loss for more than twelve months as a percentage of total fixed maturities and equities fair value. Beginning balance at original discount rate Ending balance at original discount rate Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Cash Flow and Reinsurance Cash flows - investing activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] A Standard & Poor's, A Rating [Member] Net cash provided by operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Limited-pay whole life DPL Limited-Pay Whole Life DPL [Member] Limited-Pay Whole Life DPL Net premiums written and contract deposits, Ceded to other companies Ceded Insurance Premiums Written And Contract Deposits Insurance premiums written and contract deposits assumed by another insurer as a result of reinsurance arrangements. Fair Value Debt Securities, Available-for-Sale, Excluding Accrued Interest Fixed maturity securities sales Proceeds from Sale of Debt Securities, Available-for-Sale Sales Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales Preferred stock, par value (in usd per share) Preferred Stock, Par or Stated Value Per Share Other liabilities Other Liabilities Goodwill Goodwill Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] Current period Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid, Current Year PEO Total Compensation Amount PEO Total Compensation Amount SPIA (life contingent) Life Contingent SPIA Retirement Insurance [Member] Life Contingent SPIA Retirement Insurance Derivatives embedded in fixed indexed annuity products, measurement input Derivative Liability, Measurement Input Due after 20 years Due After 20 Years, Percent Of Total Fair Value Percentage of fair value of available for sale debt securities maturing after the twentieth rolling twelve months following the latest balance sheet presented. Equity Components [Axis] Equity Components [Axis] Transfers out of Level 3 Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers out of Level 3 Change in net funded status of benefit plans OCI, Defined Benefit Plan, Change In Funded Status OCI, Defined Benefit Plan, Change In Funded Status Schedule of Market Risk Benefit, Activity Market Risk Benefit, Activity [Table Text Block] Insurance liabilities Increase (Decrease) in Insurance Liabilities Segment profit (loss) (Core earnings) Segment Profit (Loss) Segment Profit (Loss) Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Net MRBs, measurement input Market Risk Benefit, Measurement Input Number of reportable segments (in segments) Number of Reportable Segments Schedule of Separate Account, Liability Separate Account, Liability [Table Text Block] Other segment income Other Segment Income Other Segment Income Benefits, claims and settlement expenses (Reserve remeasurement losses, $0.1; $2.1) Benefits, claims and settlement expenses, net amount Policyholder Benefits and Claims Incurred, Net Other Performance Measure, Amount Other Performance Measure, Amount Schedule of Restrictions on Cash and Cash Equivalents Restrictions on Cash and Cash Equivalents [Table Text Block] Entity Address, State or Province Entity Address, State or Province Separate Account, Liability [Roll Forward] Separate Account, Liability [Roll Forward] Long-Duration Insurance Contracts Long-Duration Insurance Contracts Disclosure [Text Block] Change in fair value - equity securities Equity Securities, FV-NI, Gain (Loss) Derivative Instrument [Axis] Derivative Instrument [Axis] Individual: Individual [Axis] Fixed Indexed Account Annuities Indexed Annuity [Member] Restricted cash Restricted Cash Limited partnership interests sales Proceeds from Limited Partnership Investments Operating expenses Operating Expenses, Excluding Amortization Of Intangible Assets Operating Expenses, Excluding Amortization Of Intangible Assets Separate Account variable annuity assets Separate Account Asset Dividends paid to shareholders Payments of Ordinary Dividends, Common Stock Additional paid-in capital Additional Paid in Capital, Common Stock Investments Investments [Abstract] Entity [Domain] Entity [Domain] Net cash provided by (used in) investing activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Limited partnership interests Limited partnership interests Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures Expected future benefits and expenses, discounted Liability For Future Policy Benefit, Expected Future Policy Benefit, Discounted, Before Reinsurance Liability For Future Policy Benefit, Expected Future Policy Benefit, Discounted, Before Reinsurance FHLB funding agreements Federal Home Loan Bank Funding Agreements Represents the federal home loan bank funding agreements. 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] Infrastructure debt funds Infrastructure Debt Funds [Member] Infrastructure Debt Funds Interest Interest Paid, Excluding Capitalized Interest, Operating Activity Document Fiscal Year Focus Document Fiscal Year Focus Percentage of invested assets in total investment portfolio Percentage Of Invested Assets In Total Investment Percentage of invested assets in the total investment portfolio in Level 3 carried at fair value on a recurring basis. Schedule of Effects of Reinsurance on Premiums and Benefits Effects of Reinsurance [Table Text Block] Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Benefits and claims expenses (excluding catastrophe losses) Policyholder Benefits And Claims Incurred, Net, Adjusted Policyholder Benefits And Claims Incurred, Net, Adjusted Schedule of Gain (Loss) on Securities [Table] Schedule of Gain (Loss) on Securities [Table] Entity Interactive Data Current Entity Interactive Data Current Gross gains realized Equity Securities, FV-NI, Realized Gain Schedule of Deferred Policy Acquisition Costs Deferred Policy Acquisition Costs [Table Text Block] Carrying Amount Reported Value Measurement [Member] Separate account (variable annuity) assets Schedule of Fair Value of Separate Accounts by Major Category of Investment, Fair Value Equity [Abstract] Equity [Abstract] 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] Liability for Future Policy Benefit, by Product Segment [Table] Liability for Future Policy Benefit, by Product Segment [Table] Sales and other, net Debt and Equity Securities, Gain (Loss) Segment Information Segment Reporting Disclosure [Text Block] Deferred policy acquisition costs Deferred Policy Acquisition Costs, Period Increase (Decrease) 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] Change in deposit asset on reinsurance Decrease (Increase) In Reinsurance Deposits, Financing Activities Decrease (Increase) In Reinsurance Deposits, Financing Activities Fixed Account Annuities Fixed Annuity [Member] Increase (Decrease) in Stockholders' Equity Increase (Decrease) in Stockholders' Equity [Roll Forward] Fixed maturity securities, Gross Unrealized Losses Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss [Abstract] Other Separate Account, Liability, Increase (Decrease) from Other Change Transfers into Level 3 Fair Value, Measurement with Unobservable Inputs Reconciliation, Liability, Transfers Into Level 3 Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] Accumulated Other Comprehensive Income (Loss) Comprehensive Income (Loss) Note [Text Block] Weighted Average Weighted Average [Member] Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Intangible asset amortization expense Amortization of Intangible Assets Fair Value, Liability, Recurring Basis, Unobservable Input Reconciliation, Liability, Gain (Loss), Statement of Other Comprehensive Income or Comprehensive Income [Extensible Enumeration] Fair Value, Liability, Recurring Basis, Unobservable Input Reconciliation, Liability, Gain (Loss), Statement of Other Comprehensive Income or Comprehensive Income [Extensible Enumeration] Distribution of the Company's fixed maturity portfolio by estimated expected maturity Distribution of the Company's fixed maturity portfolio by estimated expected maturity Schedule of fixed maturity securities by maturities. Other than short-duration Other Than Short-Duration Insurance Contracts [Member] Other Than Short-Duration Insurance Contracts Schedule of Accumulated Other Comprehensive Income (Loss) Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Depreciation and intangible asset amortization Depreciation, Depletion and Amortization Other assets Other Assets, Noncurrent Entity Central Index Key Entity Central Index Key Capitalizations Deferred Policy Acquisition Cost, Capitalization PEO Name PEO Name Total revenues Revenues Treasury stock acquired Payments for Repurchase of Equity 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] Supplemental Cash Flow Elements [Abstract] Supplemental Cash Flow Elements [Abstract] Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Total claims and claim expenses incurred Liability for Unpaid Claims and Claims Adjustment Expense, Incurred Claims Beginning balance Ending balance Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value Arrangement Duration Trading Arrangement Duration Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Segments [Axis] Segments [Axis] Other asset-backed securities Other asset-backed securities Mortgage-Backed Securities, Other [Member] Exercise Price Award Exercise Price Entity Filer Category Entity Filer Category Local Phone Number Local Phone Number Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Other, net Payment for (Proceeds from) Other Investing Activity Other, net Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Other Item Surrenders and withdrawals Policyholder Account Balance, Surrender and Withdrawal Fixed maturity securities, Fair Value Available-for-Sale Securities, Continuous Unrealized Loss Position, Qualitative Disclosure [Abstract] Due in 1 year or less Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, Remainder of Fiscal Year Group Benefits Group Benefits [Member] Group Benefits Assets Assets [Abstract] Life policy accounts deposits, withdrawals, and surrenders Additions to Contract Holders Funds Underlying Security Market Price Change Underlying Security Market Price Change, Percent Fixed maturities, available for sale, amortized cost Amortized Cost, net Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, after Allowance for Credit Loss, Current Net MRBs Balance, beginning of period Balance, end of period Net Market Risk Benefit, after Increase (Decrease) from Instrument-Specific Credit Risk Due in 1 year Or less Due In 1 Year Or Less, Percent Of Total Fair Value Percentage of fair value of available for sale debt securities maturing during the next rolling twelve months following the latest balance sheet presented. Fair Value of Financial Instruments Fair Value Disclosures [Text Block] 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] Total benefits, losses and expenses Benefits, Losses and Expenses Entity Address, Address Line One Entity Address, Address Line One Treasury stock acquired - share repurchase authorization Treasury Stock, Value, Acquired, Cost Method Other, including U.S. Treasury securities Other, Including U.S. Treasury Securities [Member] Other including U.S treasury securities. Accumulated other comprehensive income (loss), net of tax: Total AOCI Attributable to Parent [Member] Disability Supplement Health Insurance Related To Disability [Member] Supplement Health Insurance Related To Disability Premiums received Policyholder Account Balance, Premium Received, Net Policyholder Account Balance, Premium Received, Net Investments [Domain] Investments [Domain] Credit losses on fixed maturity securities for which credit losses were not previously reported Debt Securities, Available-for-Sale, Excluding Accrued Interest, Allowance for Credit Loss, Not Previously Recorded Repayment of FHLB funding agreements Principal Repayment On Federal Home Loan Bank Funding Agreements Principal Repayment On Federal Home Loan Bank Funding Agreements Policy liabilities Policy liabilities Policy liabilities. Gross Amounts Derivative Asset, Subject to Master Netting Arrangement, before Offset Fair Value as of Grant Date Award Grant Date Fair Value Equity securities at cost Equity Securities, FV-NI, Cost Entity Registrant Name Entity Registrant Name Schedule of Fair Value Assets and Liabilities Measured on Nonrecurring Basis Schedule Of Fair Value Assets And Liabilities Measured On Nonrecurring Basis [Table Text Block] Schedule Of Fair Value Assets And Liabilities Measured On Nonrecurring Basis Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Municipal bonds Municipal bonds Municipal Bonds [Member] Market appreciation (depreciation) Separate Account, Liability, Increase (Decrease) from Invested Performance Whole Life Whole Life Insurance [Member] Current discount rate Liability for Future Policy Benefit, Current Weighted-Average Discount Rate Separate Account, Liability [Line Items] Separate Account, Liability [Line Items] Schedule of Policyholder Account Balance, Guaranteed Minimum Crediting Rate Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Table Text Block] Market Risk Benefit [Line Items] Market Risk Benefit [Line Items] Document Quarterly Report Document Quarterly Report Fixed maturity securities, fair value, 12 months or less Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months Totals Assets, Fair Value Disclosure Schedule of Additional Significant Financial Information for these Segments Segment, Reconciliation of Other Items from Segments to Consolidated [Table Text Block] Long-term debt Long-Term Debt, Fair Value Number of positions with a gross unrealized loss, total (security) Debt Securities, Available-for-Sale, Unrealized Loss Position, Number of Positions Schedule of Fair Value Measurement Inputs and Valuation Techniques Schedule of Fair Value Measurement Inputs and Valuation Techniques Fair Value Measurement Inputs and Valuation Techniques [Table Text Block] Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Total segment expenses Operating Costs And Expenses, Adjusted Operating Costs And Expenses, Adjusted Investment Type [Axis] Investment Type [Axis] Total investments Investments Title Trading Arrangement, Individual Title Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Net increase (decrease) related to credit losses previously reported Debt Securities, Available-for-Sale, Excluding Accrued Interest, Allowance for Credit Loss, Not to Sell before Recovery, Credit Loss, Previously Recorded, Expense (Reversal) Restatement Determination Date: Restatement Determination Date [Axis] Change in book overdrafts Proceeds from (Repayments of) Bank Overdrafts Options exercised and conversion of common and restricted stock units Shares Issued, Value, Share-Based Payment Arrangement, after 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Adjustments [Member] Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] Other income Other Income Compensation Amount Outstanding Recovery Compensation Amount Loss adjustment expenses Liability for Unpaid Claims and Claims Adjustment Expense, Period Increase (Decrease) Deferred variable annuities Deferred Variable Annuity [Member] Schedule of Reconciliation of Property and Casualty Unpaid Claims and Claim Expense Schedule of Liability for Unpaid Claims and Claims Adjustment Expense [Table Text Block] Statements of Comprehensive Income (Loss) Statement of Comprehensive Income [Abstract] Indexed Universal Life Indexed Universal Life Insurance [Member] Indexed Universal Life Insurance Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Fair Value Estimate of Fair Value Measurement [Member] Adjusted balance Liability for Future Policy Benefit, Expected Future Benefit, Original Discount Rate, before Reinsurance, after Cash Flow Change Schedule of Investments [Line Items] Schedule of Investments [Line Items] MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Name Awards Close in Time to MNPI Disclosures, Individual Name Liability for Future Policy Benefit, by Product Segment [Line Items] Liability for Future Policy Benefit, by Product Segment [Line Items] Pretax profit (loss) Income (Loss) From Continuing Operations Before Income Taxes, Noncontrolling Interest, Adjusted Income (Loss) From Continuing Operations Before Income Taxes, Noncontrolling Interest, Adjusted Weighted-average attained age of contract holders Net Amount at Risk by Product and Guarantee, Weighted Average Attained Age Weighted average number of shares and equivalent shares Weighted Average Number of Shares Outstanding Reconciliation [Abstract] Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Fair Value, Pricing Source [Domain] Fair 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Policyholder Fund The liability as of the balance sheet date for funds held that are returnable under terms of insurance contracts that were not separately reported, and amounts payable under Federal Home Loan Bank Funding agreements. BBB Standard & Poor's, BBB Rating [Member] Assumed from Other Companies Reinsurance, Assumed from Other Companies [Abstract] Reinsurance, Assumed from Other Companies [Abstract] Derivatives embedded in fixed indexed annuity products Other Policyholder Funds, Derivative Instruments Fair Value Disclosure Fair value of the liability as of the policyholders for funds held that are returnable under the terms of insurance contracts that were not separately reported. Financial Instruments [Domain] Financial Instruments [Domain] Change in net unrealized investment losses on fixed maturity securities Change in net unrealized investment gains (losses) on fixed maturity securities OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment and Tax Infrastructure equity funds Infrastructure Equity Funds [Member] Infrastructure Equity Funds Supplemental & Group Benefits Supplemental And Group Benefits [Member] Supplemental And Group Benefits Segments [Domain] Segments [Domain] Purchases Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases Fixed maturity securities Fixed maturity securities Fixed Maturities [Member] Investments Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] Accumulated other comprehensive income (loss), net of tax: Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Net unrealized gains (losses) included in OCI Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Other Comprehensive Income (Loss) Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Net Investment Income [Line Items] Net Investment Income [Line Items] Minimum Minimum [Member] Net Amount Derivative Asset, Subject to Master Netting Arrangement, after Offset and Deduction Gross Amounts Not Offset in the Consolidated Balance Sheets, Cash Collateral Received Derivative Asset, Subject to Master Netting Arrangement, Collateral, Obligation to Return Cash Not Offset Net unrealized investment gains (losses) on securities Net Unrealized Investment Gains (Losses) on Fixed Maturity Securities AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member] Policyholders' account balances Beginning balance Ending balance Policyholder Account Balance Adjusted balance Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Reinsurance, after Cash Flow Change Company Selected Measure Name Company Selected Measure Name Other US Government Debt Securities [Member] Fair Value Measurement [Domain] Fair Value Measurement [Domain] Fixed maturity securities purchases Payments to Acquire Debt Securities, Available-for-Sale Net investment (gains) losses Gain (Loss) on Sale of Investments Preferred stock, $0.001 par value, authorized 1,000,000 shares; none issued Preferred Stock, Value, Issued Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Actual variances from expected experience Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) of Actual Variance from Expected Experience Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] All Executive Categories All Executive Categories [Member] Lapses, expected experience Liability For Future Policy Benefit, Lapse Rate, Expected Experience Liability For Future Policy Benefit, Lapse Rate, Expected Experience Claims occurring in the current period Current Year Claims and Claims Adjustment Expense DAC amortization expense Amortization expense Deferred policy acquisition cost amortization Deferred Policy Acquisition Costs, Amortization Expense Other investments Other Investment, Fair Value Disclosure Other Investment, Fair Value Disclosure Common stock, $0.001 par value, authorized 75,000,000 shares; issued, 2026, 67,467,590; 2025, 67,323,929 Common Stock, Value, Issued Short-term investments Short-Term Investments Loss (gain) from equity method investments, net of dividends or distributions Income (Loss) from Equity Method Investments, Net of Dividends or Distributions Change in fair value and gains (losses) realized on settlements - derivatives Change in Unrealized Gain (Loss) on Fair Value Hedging Instruments Contingencies and Commitments Commitments and Contingencies Disclosure [Text Block] Liability for Future Policy Benefit, Expected Future Policy Benefit [Roll Forward] Liability for Future Policy Benefit, Expected Future Policy Benefit [Roll Forward] Diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Due in 1 year or less Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, Remainder of Fiscal Year Schedule of Net Investment Gains (Losses) Realized Gain (Loss) on Investments [Table Text Block] Net reserve remeasurements attributable to discount rates AOCI, Discount Rate Reserves, Adjustment, after Tax AOCI, Discount Rate Reserves, Adjustment, after Tax Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Experience life Experience Life Insurance [Member] Experience Life Insurance Short-term and other investments Short-Term And Other Investments Short-Term And Other Investments Entity Small Business Entity Small Business Changes in market risk benefits Market Risk Benefit, Period Increase (Decrease) Fair Value, Pricing Source [Axis] Fair Value, Pricing Source [Axis] Fair Value, Pricing Source Document Transition Report Document Transition Report Schedule of Components of Net Investment Income Investment Income [Table Text Block] Other policyholder funds Other Policyholder Funds, Fair Value Disclosure Fair Value of the liability as of the balance sheet date to the policyholders for funds held that are returnable under the terms of insurance contracts that were not separately reported. Deposit Asset on Reinsurance Deposit Asset On Reinsurance [Member] Deposit Asset On Reinsurance [Member] Investment grade rating Investment Grade Rate Percentage of fair value of fixed maturity and equity securities with a gross unrealized loss having an investment grade rating at period end. Underlying Securities Award Underlying Securities Amount Gross gains realized Debt Securities, Available-for-Sale, Realized Gain Benefits, claims and settlement expenses, Ceded to other companies Policyholder Benefits and Claims Incurred, Ceded Equity Component [Domain] Equity Component [Domain] Document Period End Date Document Period End Date Change in cash flow assumptions Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) from Cash Flow Change PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Number of reportable segments representing major lines of business Number Of Reportable Segments, Representing Major Lines Of Business Number Of Reportable Segments, Representing Major Lines Of Business SPIA (non-life contingent) Non-Life Contingent Single-Premium Immediate Annuity Insurance [Member] Non-Life Contingent Single-Premium Immediate Annuity Insurance Interest accruals Liability for Future Policy Benefit, Expected Future Policy Benefit, Interest Expense Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] Equal to 3% but less than 4% Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0300 to 0399 [Member] Investment Holdings [Table] Schedule of Investments [Table] Cash surrender value Policyholder Account Balance, Cash Surrender Value During Period Policyholder Account Balance, Cash Surrender Value During Period Net liability for future policy benefits, after reinsurance recoverable Liability For Future Policy Benefit, After Reinsurance, Before Impact Of Flooring Liability For Future Policy Benefit, After Reinsurance, Before Impact Of Flooring Document Type Document Type Less than 2% Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 0000 To 0200 [Member] Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 0000 To 0200 Level 3 Level 3 Fair Value, Inputs, Level 3 [Member] Short-Duration Insurance Contracts Liability for Future Policy Benefits and Unpaid Claims Disclosure [Text Block] Name Outstanding Recovery, Individual Name Product and Service [Axis] Product and Service [Axis] Due after 10 years through 20 years Due After 10 Years Through 20 Years, Percent Of Total Fair Value Percentage of fair value of available for sale debt securities maturing in the eleventh rolling twelve months through the twentieth rolling twelve months following the latest balance sheet presented. Derivative Contract [Domain] Derivative Contract [Domain] Gross losses realized Debt Securities, Available-for-Sale, Realized Loss Federal Home Loan Bank Branch [Axis] Federal Home Loan Bank Branch [Axis] Governmental Agencies as Required by Law in Various States Governmental Agencies as Required by Law in Various States [Member] All Individuals All Individuals [Member] Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Income tax expense Income Tax Expense (Benefit), Adjusted Income Tax Expense (Benefit), Adjusted mortality multiplier Measurement Input, Mortality Rate [Member] Estimated expected maturity: Estimated expected maturity: Estimated expected maturity. Name Forgone Recovery, Individual Name Average option-adjusted duration, in years Average Option-Adjusted Duration, In Years Investment debt securities average option adjusted duration expressed in number of years. Investment Income [Table] Investment Income [Table] (Asset) Market Risk Benefit, Asset, Amount Statistical Measurement [Axis] Statistical Measurement [Axis] 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] Mortgage Backed and Other Asset- Backed Securities Mortgage Backed And Other Asset Backed Securities [Member] Mortgage Backed And Other Asset Backed Securities Changes in cash flow assumptions Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) from Cash Flow Change lapse rate Measurement Input, Lapse Rate [Member] Fair Value Measurement Inputs and Valuation Techniques [Line Items] Fair Value Measurement Inputs and Valuation Techniques [Line Items] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Withholding tax payments on RSUs tendered Payment, Tax Withholding, Share-Based Payment Arrangement Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Due after 5 years through 10 years Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Rolling after One Through Five Years, Fair Value Withdrawals Separate Account, Liability, Withdrawal Effect of changes in the instrument-specific credit risk AOCI, Market Risk Benefit, Instrument-Specific Credit Risk, before Tax Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Deposits Proceeds from Annuities and Investment Certificates Other comprehensive income Net current period other comprehensive income (loss) Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Life & Retirement Life And Retirement [Member] Life And Retirement Operating & admin expenses Operating Expenses Limited partnership interests purchases Payments to Acquire Limited Partnership Interests Other operating assets and liabilities Increase (Decrease) in Other Operating Assets and Liabilities, Net Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Change in net funded status of benefit plans Other Comprehensive (Income) Loss, Defined Benefit Plan, after Tax and Reclassification Adjustment, Attributable to Parent Level 1 Fair Value, Inputs, Level 1 [Member] AAA Standard & Poor's, AAA Rating [Member] Deposits Separate Account, Liability, Deposit Weighted-average crediting rate Policyholder Account Balance, Weighted Average Crediting Rate During Period Policyholder Account Balance, Weighted Average Crediting Rate During Period Diluted (in usd per share) Earnings Per Share, Diluted Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Title of 12(b) Security Title of 12(b) Security Interest accretion rate Liability for Future Policy Benefit, Weighted-Average Interest Accretion Rate Due after 1 year through 5 years Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Rolling within One Year, Amortized Cost Schedule of Proceeds Received From Sales of Fixed Maturities and Equity Securities Schedule of Realized Gain (Loss) [Table Text Block] Net unrealized investment gains (losses) on fixed maturity securities, net of tax AOCI Attributable to Parent, Net of Tax [Roll Forward] Policyholder Account Balance [Table] Policyholder Account Balance [Table] Treasury stock (in shares) Treasury Stock, Common, Shares Deferred Policy Acquisition Cost [Table] Deferred Policy Acquisition Cost [Table] Change in short-term and other investments, net Proceeds From (Payments For) Short Term And Other Investments, Net Proceeds From (Payments For) Short Term And Other Investments, Net Net income per share Earnings Per Share [Abstract] Claims and claim expense payments for claims occurring during: Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid [Abstract] Consolidation Items [Domain] Consolidation Items [Domain] Investments, Debt and Equity Securities [Abstract] Investments, Debt and Equity Securities [Abstract] Less: reinsurance recoverables Plus: reinsurance recoverables Reinsurance Recoverables, Including Reinsurance Premium Paid Issuances Liability for Future Policy Benefit, Expected Future Policy Benefit, Issuance Annuity contracts: variable, fixed and FHLB funding agreements: Net Change Annuities and Investment Certificates [Abstract] Gain (Loss) on Securities [Line Items] Gain (Loss) on Securities [Line Items] Experience adjustment Deferred Policy Acquisition Cost, Experience Adjustment Expected future gross premiums, undiscounted Liability for Future Policy Benefit, Expected Future Gross Premium, Undiscounted, before Reinsurance Income taxes Income Taxes Paid, Net External Credit Rating by Grouping [Axis] External Credit Rating by Grouping [Axis] Amortized Cost, net Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Amortized Cost, Rolling Maturity [Abstract] Award Timing Disclosures [Line Items] Catastrophe losses Loss from Catastrophes Net reserves, beginning of period Net reserves, end of period Liability for Unpaid Claims and Claims Adjustment Expense, Net Real estate equity funds Real Estate Equity Funds [Member] Real Estate Equity Funds Due after 10 years through 20 years Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Rolling after 5 through 10 Years, Fair Value FHLB of Chicago Federal Home Loans Bank Of Chicago [Member] Commercial mortgage loan funds Senior Commercial Mortgage Loan Funds [Member] Senior Commercial Mortgage Loan Funds Property & Casualty Property, Liability and Casualty Insurance Product Line [Member] Securities sold under agreements to repurchase Securities Sold under Agreements to Repurchase Reinsurance Reinsurance [Text Block] Net income Net income Net income Net Income (Loss) Attributable to Parent Intersegment eliminations Intersegment Eliminations [Member] Schedule of Fair Value and Gross Unrealized Losses of Fixed Maturity Securities and Equity Securities in an Unrealized Loss Position Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value [Table Text Block] Expiration Date Trading Arrangement Expiration Date Net transfers from (to) separate account Net transfers Transfer to (from) Policyholder Account Balance (to) from Separate Account Fixed maturity securities Fixed Income Securities [Member] Future policy benefit reserves Net liability for future policy benefits Liability for Future Policy Benefit, before Reinsurance Schedule of Carrying Amounts of Equity Method Limited Partnership Interests Equity Method Investments [Table Text Block] Change in net unrealized investment losses on fixed maturity securities Other Comprehensive Income (Loss), Available-for-Sale Securities Adjustment, Net of Tax, Portion Attributable to Parent Benefit payments Policyholder Account Balance, Benefit Payment Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Preferred stock, shares authorized (in shares) Preferred Stock, Shares Authorized Adoption Date Trading Arrangement Adoption Date Net premiums collected Liability for Future Policy Benefit, Expected Net Premium, Net Premium Collected Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Intent-to-sell impairments Other Than Temporary Impairment Loss, Investments, Portion Recognized In Earnings, Change In Intent Other Than Temporary Impairment Loss, Investments, Portion Recognized In Earnings, Change In Intent Write-offs Debt Securities, Available-for-Sale, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff Entity Current Reporting Status Entity Current Reporting Status Not rated Standard & Poor's, Not Rated [Member] Standard & Poor's, Not Rated Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Retained earnings Retained Earnings (Accumulated Deficit) Financial Instrument [Axis] Financial Instrument [Axis] At Guaranteed Minimum Policyholder Account Balance, at Guaranteed Minimum Crediting Rate [Member] Benefits, losses and expenses Benefits, Losses and Expenses [Abstract] Statement of Financial Position [Abstract] Statement of Financial Position [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] Executive Category: Executive Category [Axis] Fixed maturity securities, gross unrealized losses, more than 12 months Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Total gains or losses Gain Or Losses Net [Abstract] Gain Or Losses Net [Abstract] Accident Supplement Health Insurance Related To Accident [Member] Supplement Health Insurance Related To Accident Number of positions with a gross unrealized loss, 12 months or less (security) Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions Interest expense Interest expense Interest Expense, Operating and Nonoperating Current Fiscal Year End Date Current Fiscal Year End Date Fixed maturity securities, gross unrealized losses, 12 months or less Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Total impairments Impairments Of Investments Impairments Of Investments 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] Prior periods Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid, Prior Years Free-standing derivatives Free Standing Derivatives [Member] Free Standing Derivatives Member Statement [Table] Statement [Table] Net amount at risk Policyholder Account Balance, Net Amount At Risk During Period Policyholder Account Balance, Net Amount At Risk During Period Adjustments to reconcile net income (loss) to net cash provided by operating activities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract] Cash flows - financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] Schedule of Liability for Future Policy Benefits, by Product Segment Schedule of Liability for Future Policy Benefits, by Product Segment [Table Text Block] Term life Term Life Insurance, Including Adjustment Due To Reserve Flooring [Member] Term Life Insurance, Including Adjustment Due To Reserve Flooring Fixed maturity securities, gross unrealized losses, total Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss Schedule of Company's Fair Value Hierarchy Measured at Recurring Basis Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Equity securities at fair value, (cost $56200000 and $56220000) Equity securities Equity Securities, FV-NI, Current Benefits, claims and settlement expenses, Assumed from other companies Policyholder Benefits and Claims Incurred, Assumed Schedule of Table for Reconciliations for All Level 3 Assets Measured at Fair Value on a Recurring Basis Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] 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] All Adjustments to Compensation All Adjustments to Compensation [Member] Interest expense Liability for Future Policy Benefit, Interest Expense Amendment Flag Amendment Flag Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward] Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward] Sales Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Sales Unpaid claims and claim expenses Beginning gross reserves Ending gross reserves Liability for Claims and Claims Adjustment Expense Treasury stock, at cost, 2026, 27,086,418 shares; 2025, 26,664,472 shares Treasury Stock, Common, Value Due after 20 years Due After 10 Years Through 20 Years, Amortized Cost Amount of available-for-sale debt securities at cost, net of adjustments, maturing in the eleventh rolling twelve months through the twentieth rolling twelve months following the latest balance sheet presented. Adjustments include, but are not limited to, accretion, amortization, collection of cash, previous other-than-temporary impairments (OTTI) recognized in earnings (less any cumulative-effect adjustments, as defined) and fair value hedge accounting adjustments. Termination Date Trading Arrangement Termination Date Beginning balance at original discount rate Ending balance at original discount rate Liability for Future Policy Benefit, Expected Future Policy Benefit, Original Discount Rate, before Cash Flow and Reinsurance Net cash used in financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Investment Grade External Credit Rating, Investment Grade [Member] Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Measure: Measure [Axis] Policyholders' account balances Policyholder Funds, Fair Value Disclosure Policyholder Funds, Fair Value Disclosure Valuation Approach and Technique [Axis] Valuation Approach and Technique [Axis] Equal to 4% but less than 5% Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 0400 To 0499 [Member] Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 0400 To 0499 Financial Liabilities Financial Liabilities Fair Value Disclosure [Abstract] Basis of Presentation and Significant Accounting Policies Basis of Presentation and Significant Accounting Policies [Text Block] Total Annuities Total Annuities [Member] Total Annuities Basic (in shares) Weighted Average Number of Shares Outstanding, Basic Supplemental Consolidated Cash and Cash Flow Information Cash Flow, Supplemental Disclosures [Text Block] Short-Duration Insurance Contracts, Historical Claims Duration [Table] Short-Duration Insurance Contracts, Historical Claims Duration [Table] CCC or lower Standard & Poor's, CCC Rating [Member] Segment Reporting [Abstract] Segment Reporting [Abstract] Percent of Total Fair Value Percentage of Total Fair Value [Abstract] Percentage of Total Fair Value [Abstract] Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Market Risk Benefit [Roll Forward] Market Risk Benefit [Roll Forward] Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Investment expenses Investment Income, Investment Expense Entity Tax Identification Number Entity Tax Identification Number Income tax expense (benefit) amounts reclassified from AOCI Reclassification from AOCI, Current Period, Tax discounted cash flow Valuation Technique, Discounted Cash Flow [Member] Expected future gross premiums, discounted Liability for Future Policy Benefit, Expected Future Gross Premium, Discounted, before Reinsurance Pretax amounts reclassified from AOCI Reclassification from AOCI, Current Period, before Tax, Attributable to Parent Investment Portfolio Investment Portfolio [Member] Investment Portfolio [Member] Net premiums written and contract deposits, Assumed from other companies Assumed Insurance Premiums Written And Contract Deposits Insurance premiums written and contract deposits for all insurance contracts assumed from other insurers as a result of reinsurance arrangements. Policyholder account balance, guaranteed minimum credit rating Policyholder Account Balance, Guaranteed Minimum Credit Rating External External Pricing Source [Member] External Pricing Source Issuances Liability for Future Policy Benefit, Expected Net Premium, Issuance Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Common stock, par value (in usd per share) Common Stock, Par or Stated Value Per Share Common stock, shares issued (in shares) Common Stock, Shares, Issued Remeasurement losses Liability for Future Policy Benefit, Remeasurement Gain (Loss) Impact of flooring on net liability for future policy benefits Liability For Future Policy Benefit, Adjustment Due To Reserve Flooring Liability For Future Policy Benefit, Adjustment Due To Reserve Flooring Net premiums written and contract deposits, net amount Insurance Premiums Written And Contract Deposits The sum of insurance premiums written for all insurance contracts after subtracting any amounts ceded to another insurer and adding premiums assumed from other insurers, plus contract deposits on investment and universal life-type contracts. Less: Reinsurance recoverable Liability for Future Policy Benefit, Reinsurance Recoverable, after Allowance Reduction of credit allowances related to sales Debt Securities, Available-for-Sale, Excluding Accrued Interest, Allowance for Credit Loss, Sold Debt Securities, Available-for-Sale, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward] Debt Securities, Available-for-Sale, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward] Use of Estimates Use of Estimates, Policy [Policy Text Block] Settlements Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements Mortgage-backed securities Mortgage-backed securities Mortgage-Backed Security, Issued by US Government-Sponsored Enterprise [Member] Non Investment Grade External Credit Rating, Noninvestment Grade [Member] Trading Arrangement: Trading Arrangement [Axis] Total Shareholder Return Amount Total Shareholder Return Amount Reconciling items Reconciling Items [Member] Reconciling Items Net investment gains (losses) included in net income related to financial liabilities Net investment (gains) losses included in net income related to financial liabilities Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Earnings Gross Amounts Offset in the Consolidated Balance Sheets Derivative Asset, Subject to Master Netting Arrangement, Liability Offset Insider Trading Arrangements [Line Items] Security Exchange Name Security Exchange Name Amounts due under reinsurance agreements Increase (Decrease) in Reinsurance Recoverable Beginning balance Ending balance Debt Securities, Available-for-Sale, Allowance for Credit Loss, Excluding Accrued Interest Equity securities Equity Securities & Limited Partnership Interests Equity Securities [Member] Insurance Loss Reserves [Abstract] Insurance Loss Reserves [Abstract] Net amount at risk Market Risk Benefit, Net Amount at Risk Actual variances from expected experience Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) of Actual Variance from Expected Experience Total liabilities Liabilities Other Policyholder Account Balance, Increase (Decrease) from Other Change Contributions to defined benefit plan Increase (Decrease) in Obligation, Pension Benefits Remaining minimum amount committed Purchase Commitment, Remaining Minimum Amount Committed Fixed maturity securities, available for sale, at fair value (amortized cost, net 2026, $6,147.4; 2025, $6,026.7) Fair Value Total Total fixed maturity securities Debt Securities, Available-for-Sale, Excluding Accrued Interest, Current Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Proceeds received Proceeds from Sale and Maturity of Debt Securities, Available-for-Sale Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Net premiums and contract charges earned, direct amount Direct Insurance Premiums And Contract Charges Earned The sum of insurance premiums earned, premiums earned on the income statement for all insurance contracts before subtracting any amounts ceded to another insurer or adding premiums assumed from other insurers, plus contract charges earned on investment and universal life-type contracts. 5% or higher Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 0500 And Greater [Member] Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 0500 And Greater Reinsurance Disclosures [Abstract] Reinsurance Disclosures [Abstract] Effect of changes in discount rate assumptions AOCI, Liability for Future Policy Benefit, Expected Net Premium, before Tax Gross premiums or assessments Liability for Future Policy Benefit, Gross Premium Income Net investment gains (losses) included in net income related to financial assets Net investment gains (losses) included in net income Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings Statement [Line Items] Statement [Line Items] Total policy liabilities Policy Liabilities The aggregate amount of policy reserves (provided for future obligations including unpaid claims and claims adjustment expenses), policy benefits (liability for future policy benefits) and unearned premiums as of the balance sheet date. Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward] Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward] Consolidation Items [Axis] Consolidation Items [Axis] Term Life Term Life Insurance [Member] Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Cash Cash and Cash Equivalent Net Reserve Remeasurements Attributable to Discount Rates AOCI, Net Reserve Remeasurements Attributable to Discount Rates [Member] AOCI, Net Reserve Remeasurements Attributable to Discount Rates Fair Value Measurement Inputs and Valuation Techniques [Table] Fair Value Measurement Inputs and Valuation Techniques [Table] Schedule of Policyholder Account Balance Policyholder Account Balance [Table Text Block] Net investment income Gross Investment Income, Operating Fees and charges Separate Account, Liability, Policy Charge Market Risk Benefit [Table] Market Risk Benefit [Table] Income tax liabilities Increase (Decrease) in Deferred Income Taxes Common stock Common Stock [Member] Issuances Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Issuances Fair value as a percentage of total fixed maturities and equity securities fair value, 12 months or less (percent) Fair Value As Percentage Of Total Fixed Maturities And Equity Securities Fair Value Less Than 12 Months Fair value of positions with a gross unrealized loss for twelve months or less as a percentage of total fixed maturities and equities fair value. Net increase (decrease) in reverse repurchase agreements Net Increase (Decrease) In Reverse Repurchase Agreements Net Increase (Decrease) In Reverse Repurchase Agreements Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Non-NEOs Non-NEOs [Member] Corporate bonds Corporate bonds Corporate Debt Securities [Member] Net decrease in cash Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation