Investment Operations [Abstract] Investment Operations [Abstract] Investment [Text Block] Investment [Text Block] Allowance on Mortgage Loans [Abstract] Allowance on Mortgage Loans [Abstract] Financing Receivable, Allowance for Credit Loss [Table] Financing Receivable, Allowance for Credit Loss [Table] Class of Financing Receivable [Axis] Class of Financing Receivable [Axis] Class of Financing Receivable [Domain] Class of Financing Receivable [Domain] Financing Receivable, Allowance for Credit Loss [Line Items] Financing Receivable, Allowance for Credit Loss [Line Items] Financing Receivable, Allowance for Credit Loss [Roll Forward] Financing Receivable, Allowance for Credit Loss [Roll Forward] Allowance on mortgage loans Financing Receivable, Allowance for Credit Loss Provision for Loan, Lease, and Other Losses Provision for Loan, Lease, and Other Losses Charge offs Financing Receivable, Allowance for Credit Loss, Writeoff Allowance on mortgage loans Segment Reporting [Abstract] Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Related Party [Axis] Related Party [Axis] Related Party [Domain] Related Party [Domain] Farm Bureau Property & Casualty insurance company Farm Bureau Property & Casualty insurance company [Member] Farm Bureau Property & Casualty insurance company - management by us, but non consolidated as this company is in the form of a mutual insurance company. FB P&C is the lead company, but disclosures may also include other property & casualty subsdiaries and mutual holding companies to the extent expenses are allocated/shared between those companies. [Member] Segments [Axis] Segments [Axis] Segment [Domain] Segments [Domain] Annuity Annuity Segment [Member] Annuity Segment [Member] Life Insurance Life Insurance Product Line [Member] Corporate and Other Corporate and Other [Member] Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Segment assets Segment assets Sum of assets attributable to segments, not including appreciation/depreciation in AOCI. Unrealized Gains on assets in AOCI Unrealized Gains on assets in AOCI Unrealized Gains on assets in AOCI not attributable to segments Assets Assets Operating Leases, Income Statement, Lease Revenue Depreciation and Amortization Operating Leases, Income Statement, Lease Revenue Depreciation and Amortization Operating Leases, Income Statement, Lease Revenue Depreciation and Amortization Goodwill Goodwill Management and Other Agreements [Abstract] Management and Other Agreements [Abstract] Schedules of Concentration of Risk, by Risk Factor [Table Text Block] Schedules of Concentration of Risk, by Risk Factor [Table Text Block] Fixed Maturity and Equity Securities with Unrealized Losses by Length of Time [Abstract] Fixed Maturity and Equity Securities with Unrealized Losses by Length of Time [Abstract] Schedule of Available-for-sale Securities [Table] Schedule of Available-for-sale Securities [Table] Financial Instrument [Axis] Financial Instrument [Axis] Financial Instruments [Domain] Financial Instruments [Domain] Debt Securities Debt Securities [Member] Corporate Corporate Debt Securities [Member] Residential mortgage-backed Residential Mortgage Backed Securities [Member] Mortgage-backed Securities, Issued by Private Enterprises Mortgage-backed Securities, Issued by Private Enterprises [Member] Commercial mortgage-backed Commercial Mortgage Backed Securities [Member] Other asset-backed Asset-backed Securities, Securitized Loans and Receivables [Member] United States Government and agencies US Treasury and Government [Member] States and political subdivisions US States and Political Subdivisions Debt Securities [Member] Debt Securities, Available-for-sale [Line Items] Debt Securities, Available-for-sale [Line Items] Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss Percent of Total percent of total Percent of total fixed maturities Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions Available For Sale Securities In Unrealized Loss Positions Qualitative Disclosure Number Of Issuers Available For Sale Securities In Unrealized Loss Positions Qualitative Disclosure Number Of Issuers Available For Sale Securities In Unrealized Loss Positions Qualitative Disclosure Number Of Issuers Dividends [Abstract] Schedule of Stock by Class [Table] Schedule of Stock by Class [Table] Dividends [Axis] Dividends [Axis] Dividends [Domain] Dividends [Domain] Regular quarterly cash dividend Regular quarterly cash dividend [Member] Regular quarterly cash dividend [Member] Special cash dividend Special cash dividend [Member] Special cash dividend [Member] Class of Stock [Line Items] Class of Stock [Line Items] Cash dividends per common share Common Stock, Dividends, Per Share, Cash Paid Cash dividends per preferred share Preferred Stock, Dividends, Per Share, Cash Paid Payment Of Special Cash Dividend Payment Of Special Cash Dividend Payment Of Special Cash Dividend Income Taxes [Abstract] Income Taxes [Abstract] Income Tax Contingency [Table] Income Tax Contingency [Table] Income Tax Authority [Axis] Income Tax Authority [Axis] Income Tax Authority [Domain] Income Tax Authority [Domain] Income Tax Contingency [Line Items] Income Tax Contingency [Line Items] Income Tax Expense (Benefit), Continuing Operations [Abstract] Income Tax Expense (Benefit), Continuing Operations [Abstract] Current Federal Tax Expense (Benefit) Current Federal Tax Expense (Benefit) Deferred Federal Income Tax Expense (Benefit) Deferred Federal Income Tax Expense (Benefit) Affordable Housing Tax Credits and Other Tax Benefits, Amount Affordable Housing Tax Credits and Other Tax Benefits, Amount Income Tax Expense (Benefit) Income Tax Expense (Benefit) Tax impact of Income from Equity Method Investments Tax impact of Income from Equity Method Investments Tax impact of Income from Equity Method Investments - This item represents the tax on the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. Income Tax Effects Allocated Directly to Equity [Abstract] Income Tax Effects Allocated Directly to Equity [Abstract] Change in net unrealized investment gains/losses - deferred, Tax Other Comprehensive Income (Loss), Securities, Available-for-Sale, Unrealized Holding Gain (Loss) Arising During Period, Tax Total tax from all sources provided in our financial statements Total tax from all sources provided in our financial statements Total tax from all sources provided in our financial statements Quarterly Financial Information [Abstract] Quarterly Financial Information [Abstract] Schedule of Quarterly Financial Information [Table Text Block] Quarterly Financial Information [Table Text Block] Segment Information [Abstract] Segment Information [Abstract] Segment Reporting Disclosure [Text Block] Segment Reporting Disclosure [Text Block] Retirement Benefits [Abstract] Schedule of Defined Benefit Plans Disclosures [Table] Schedule of Defined Benefit Plans Disclosures [Table] Retirement Plan Type [Axis] Retirement Plan Type [Axis] Retirement Plan Type [Domain] Retirement Plan Type [Domain] Pension Plan Pension Plan [Member] Other Pension Plan Other Pension Plan [Member] Defined Benefit Plan Disclosure [Line Items] Defined Benefit Plan Disclosure [Line Items] Defined Benefit Plan, Service Cost Defined Benefit Plan, Service Cost Defined Benefit Plan, Interest Cost Defined Benefit Plan, Interest Cost Defined Benefit Plan, Expected Return (Loss) on Plan Assets Defined Benefit Plan, Expected Return (Loss) on Plan Assets Defined Benefit Plan, Amortization of Prior Service Cost (Credit) Defined Benefit Plan, Amortization of Prior Service Cost (Credit) Defined Benefit Plan, Amortization of Gain (Loss) Defined Benefit Plan, Amortization of Gain (Loss) Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement Defined Benefit Plan, Benefit Obligation, Special and Contractual Termination Benefits Defined Benefit Plan, Benefit Obligation, Effect of Special Termination Benefit Defined Benefit Plan, Benefit Obligation, Effect of Special Termination Benefit Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Net periodic pension cost individual entity share Net periodic pension cost individual entity share Net periodic pension cost individual entity share. Defined Benefit Plan, Expected Amortization of Gain (Loss), Next Fiscal Year Defined Benefit Plan, Expected Amortization of Gain (Loss), Next Fiscal Year Defined Benefit Plan, Estimated Future Employer Contributions in Next Fiscal Year Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year Multiemployer Plans, Minimum Contribution Multiemployer Plans, Minimum Contribution Defined Benefit Plan, Expected Future Benefit Payment, Next Twelve Months Defined Benefit Plan, Expected Future Benefit Payment, Next Twelve Months Defined Benefit Plan, Expected Future Benefit Payment, Year Two Defined Benefit Plan, Expected Future Benefit Payment, Year Two Defined Benefit Plan, Expected Future Benefit Payment, Year Three Defined Benefit Plan, Expected Future Benefit Payment, Year Three Defined Benefit Plan, Expected Future Benefit Payment, Year Four Defined Benefit Plan, Expected Future Benefit Payment, Year Four Defined Benefit Plan, Expected Future Benefit Payment, Year Five Defined Benefit Plan, Expected Future Benefit Payment, Year Five Defined Benefit Plan, Expected Future Benefit Payment, Five Fiscal Years Thereafter Defined Benefit Plan, Expected Future Benefit Payment, Five Fiscal Years Thereafter Reconciliation of Other Significant Reconciling Items from Segments to Consolidated [Table] Reconciliation of Other Significant Reconciling Items from Segments to Consolidated [Table] Policy charges [Axis] Policy charges [Axis] Policy charges - detail by type of charge [Axis] Policy Charges [Domain] Policy Charges [Domain] Policy Charges [Domain] Cost of insurance charges & Administration charges Cost of insurance charges & Administration charges [Member] Cost of insurance charges & Administration charges [Member] Admin charges Admiin charges [Member] Admiin charges [Member] Cost of insurance charges Cost of insurance charges [Member] Cost of insurance charges [Member] Surrender charges Surrender charges [Member] Surrender charges [Member] Separate account charges Separate account charges [Member] Separate account charges [Member] Amortization of policy initiation fees Amortization of policy initiation fees [Member] Amortization of policy initiation fees for bonus premiums or bonus interest that was deferred upon policy initiation. [Member] Traditional life insurance premiums Life insurance - traditional [Member] Life insurance - traditional [Member] Life insurance - interest sensitive Life insurance - interest sensitive [Member] Life insurance - interest sensitive [Member] Segment Reporting, Other Significant Reconciling Item [Line Items] Segment Reporting, Other Significant Reconciling Item [Line Items] Proceeds from Insurance Premiums Collected Proceeds from Insurance Premiums Collected Increase (Decrease) in Premiums Receivable Increase (Decrease) in Premiums Receivable Traditional life insurance premiums Premiums Earned, Net, Life Interest sensitive product charges Insurance Commissions and Fees Net realized gains/losses on investments & change in fair value of derivatives on amortization of unearned revenue reserves Net realized gains/losses on investments & change in fair value of derivatives on amortization of unearned revenue reserves Net realized gains/losses on investments & change in fair value of derivatives on amortization of unearned revenue reserves Schedule II. Condensed Financial Information of Registrant [Abstract] Schedule II. Condensed Financial Information of Registrant [Abstract] Schedule of Condensed Financial Statements [Table] Condensed Financial Statements [Table] Product and Service [Axis] Product and Service [Axis] Product and Service [Domain] Product and Service [Domain] Management Service Management Service [Member] Affiliated Entity Affiliated Entity [Member] Subsidiaries Subsidiaries [Member] Class of Stock [Axis] Class of Stock [Axis] Class of Stock [Domain] Class of Stock [Domain] Common Class A Common Class A [Member] Common Class B Common Class B [Member] Consolidated Entities [Axis] Consolidated Entities [Axis] Consolidated Entities [Domain] Consolidated Entities [Domain] Parent Company Parent Company [Member] Condensed Financial Statements, Captions [Line Items] Condensed Financial Statements, Captions [Line Items] Assets [Abstract] Assets [Abstract] Investments in subsidiaries (eliminated in consolidation) Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures Fixed maturities - available for sale Debt Securities, Available-for-sale Equity securities at fair value (cost: 2019 - $95,269; 2018 - $93,564) Equity Securities Equity Securities Short-term investments Short-term Investments Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Amounts receivable from affiliates Accounts Receivable, Related Parties, Current Accrued investment income Accrued Investment Income Receivable Current income taxes recoverable Income Taxes Receivable, Current Deferred income tax assets Deferred Tax Assets, Net Other assets Other Assets Liabilities and stockholders' equity Liabilities and Equity [Abstract] Accrued expenses and other liabilities Accounts Payable and Other Accrued Liabilities Amounts payable to affiliates Accounts Payable, Related Parties, Current Current income taxes Accrued Income Taxes, Current Long-term debt payable to non-affiliates Long-term Debt Liabilities Liabilities Preferred stock Preferred Stock, Value, Outstanding Common stock, without par value Common Stock, Value, Outstanding Accumulated other comprehensive income Accumulated Other Comprehensive Income (Loss), Net of Tax Retained earnings Retained Earnings (Accumulated Deficit) Total FBL Financial Group, Inc. stockholders' equity Stockholders' Equity Attributable to Parent Liabilities and Equity Liabilities and Equity Revenues: Revenues [Abstract] Net investment income Net Investment Income Realized gains (losses) on investments Realized Investment Gains (Losses) Dividends from subsidiaries (eliminated in consolidation) SEC Schedule, 12-04, Cash Dividends Paid to Registrant, Consolidated Subsidiaries Revenue from Contract with Customer, Excluding Assessed Tax Revenue from Contract with Customer, Excluding Assessed Tax Other income Other Income Revenues Revenues Costs and Expenses [Abstract] Costs and Expenses [Abstract] Interest expense Interest Expense General and administrative expenses General and Administrative Expense Total expenses Operating Expenses Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest Income Tax Expense (Benefit) Income (Loss) from Continuing Operations Attributable to Parent Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent Equity in undistributed income of subsidiary Equity in undistributed income of subsidiary Equity in undistributed income of subsidiary - parent company only disclosure, eliminated in consolidation. Net income attributable to FBL Financial Group, Inc. Net Income (Loss) Attributable to Parent Quarterly Financial Information [Text Block] Quarterly Financial Information [Text Block] Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Table] Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Table] Defined Benefit Plan, Plan Assets, Category [Axis] Defined Benefit Plan, Plan Assets, Category [Axis] Defined Benefit Plan, Plan Assets, Category [Domain] Defined Benefit Plan, Plan Assets, Category [Domain] U.S. equity funds Equity Funds [Member] International funds Private Equity Funds, Non-US [Member] Short-term fixed income funds Money Market Funds [Member] Fixed income funds Fixed Income Funds [Member] U.S. equity funds U.S. Equity Funds [Member] U.S. Equity Funds in pooled separate accounts [Member] Real estate fund Real Estate Funds [Member] Group annuity contract Group annuity contract [Member] Group annuity contract - contract value is equivalent to fair value, as the interest-crediting rates are periodically reset to market at the discretion of the issuer [Member] Funded annuity contracts Funded annuity contract [Member] Funded annuity contract - represents group members for whom a fully funded annuity was purchased for them individually [Member] US Government Agencies Debt Securities US Government Agencies Debt Securities [Member] Limited partnerships Limited partnership [Member] Limited partnership [Member] Defined Benefit Plan, Cash and Cash Equivalents Defined Benefit Plan, Cash and Cash Equivalents [Member] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Quoted prices in active markets for identical assets (Level 1) Fair Value, Inputs, Level 1 [Member] Significant other observable inputs (Level 2) Fair Value, Inputs, Level 2 [Member] Fair Value, Inputs, Level 3 Fair Value, Inputs, Level 3 [Member] Significant unobservable inputs (Level 3) Fair Value Measured at Net Asset Value Per Share [Member] Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] Defined Benefit Plan, Plan Assets, Amount Defined Benefit Plan, Plan Assets, Amount Available-for-sale fixed maturities by maturity date [Abstract] Available-for-sale fixed maturities by maturity date [Abstract] Available-for-sale Securities, Debt Maturities [Abstract] Available-for-sale Securities, Debt Maturities [Abstract] Debt Securities, Available-for-sale, Amortized Cost, Fiscal Year Maturity [Abstract] Debt Securities, Available-for-sale, Amortized Cost, Fiscal Year Maturity [Abstract] Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, within One Year, Amortized Cost Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, within One Year, Amortized Cost Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Amortized Cost Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Amortized Cost Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Amortized Cost Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Amortized Cost Debt Securities, Available-for-sale, Allocated and Single Maturity Date, Maturity, after 10 Years, Amortized Cost Debt Securities, Available-for-sale, Allocated and Single Maturity Date, Maturity, after 10 Years, Amortized Cost Available For Sale Securities Debt Maturities with Maturity Date, Amortized Cost Available For Sale Securities Debt Maturities with Maturity Date, Amortized Cost Available For Sale Securities Debt Maturities with Maturity Date, Amortized Cost Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Amortized Cost Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Amortized Cost Available-for-sale Securities, Debt Maturities, Amortized Cost Basis Debt Securities, Available-for-sale, Amortized Cost Debt Securities, Available-for-sale, Fair Value, Fiscal Year Maturity [Abstract] Debt Securities, Available-for-sale, Fair Value, Fiscal Year Maturity [Abstract] Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, within One Year, Fair Value Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, within One Year, Fair Value Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Fair Value Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Fair Value Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Fair Value Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Fair Value Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after 10 Years, Fair Value Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after 10 Years, Fair Value Available For Sale Securities Debt Maturities with Maturity Date, Fair Value Available For Sale Securities Debt Maturities with Maturity Date, Fair Value Available For Sale Securities Debt Maturities with Maturity Date, Fair Value Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Fair Value Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Fair Value Debt Securities, Available-for-sale Consolidated Statements of Comprehensive Income [Abstract] Consolidated Statements of Comprehensive Income [Abstract] Statement [Table] Statement [Table] Scenario [Axis] Scenario [Axis] Scenario [Domain] Scenario [Domain] Statement [Line Items] Statement [Line Items] Net income Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Other Comprehensive Income (Loss), Net of Tax [Abstract] Other Comprehensive Income (Loss), Net of Tax [Abstract] Change in net unrealized investment gains/losses Other Comprehensive Income (Loss), Securities, Available-for-Sale, Unrealized Holding Gain (Loss) Arising During Period, after Tax Non-credit impairment losses Other than Temporary Impairment Losses, Investments, Portion in Other Comprehensive Loss, Net of Tax, Including Portion Attributable to Noncontrolling Interest Change in funded status of the other postretirement benefit plans Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax Total other comprehensive income, net of tax Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Total comprehensive income, net of tax Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Comprehensive income (loss) attributable to noncontrolling interest Net Income (Loss) Attributable to Noncontrolling Interest Comprehensive income attributable to FBL Financial Group, Inc. Comprehensive Income (Loss), Net of Tax, Attributable to Parent Reinsurance and Policy Provisions [Abstract] Reinsurance and Policy Provisions [Abstract] Net Amount at Risk, by Product and Guarantee [Table] Net Amount at Risk, by Product and Guarantee [Table] Guarantee Type [Axis] Guaranteed Insurance Contract, Type of Guarantee [Axis] Guaranteed Insurance Contract, Type of Guarantee [Domain] Guaranteed Insurance Contract, Type of Guarantee [Domain] GMDB return of net deposits GMDB return of net deposits [Member] GMDB return of net deposits [Member] Guaranteed Minimum Death Benefit GMDB ratchet [Member] GMDB ratchet - guaranteed minimum death benefit payable as the return of the greater of highest anniversary value or net deposits [Member] Incremental Death Benefit Incremental Death Benefit [Member] Incremental Death Benefit [Member] Guaranteed Minimum Income Benefit Guaranteed Minimum Income Benefit [Member] Net Amount at Risk by Product and Guarantee [Line Items] Net Amount at Risk by Product and Guarantee [Line Items] Net Amount at Risk by Product and Guarantee, Separate Account Value Net Amount at Risk by Product and Guarantee, Separate Account Value Net Amount at Risk by Product and Guarantee, Net Amount at Risk Net Amount at Risk by Product and Guarantee, Net Amount at Risk Net Amount at Risk by Product and Guarantee, General Account Value Net Amount at Risk by Product and Guarantee, General Account Value Net amount at risk by product and guarantee, benefits paid Net amount at risk by product and guarantee, benefits paid Net amount at risk by product and guarantee, benefits paid Net Amount at Risk by Product and Guarantee, Weighted Average Attained Age Net Amount at Risk by Product and Guarantee, Weighted Average Attained Age Earnings Per Share [Abstract] Schedule of Earnings Per Share, Basic, by Common Class, Including Two Class Method [Table] Schedule of Earnings Per Share, Basic, by Common Class, Including Two Class Method [Table] Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] Dividends on preferred stock Dividends, Preferred Stock, Cash Income available to common stockholders Net Income (Loss) Available to Common Stockholders, Basic Weighted Average Number of Shares Outstanding, Basic Weighted Average Number of Shares Outstanding, Basic Weighted Average Number Diluted Shares Outstanding Adjustment Weighted Average Number Diluted Shares Outstanding Adjustment Weighted Average Number of Shares Outstanding, Diluted Weighted Average Number of Shares Outstanding, Diluted Earnings per common share Earnings Per Share, Basic Earnings per common share - assuming dilution Earnings Per Share, Diluted Management and other agreements [Text Block] Management and other agreements [Text Block] Description of management and other agreements including agency force service agreement and royalties for use of name. Investments [Abstract] Derivative [Table] Derivative [Table] Balance Sheet Location [Axis] Balance Sheet Location [Axis] Balance Sheet Location [Domain] Balance Sheet Location [Domain] Call options (reported in other investments) Other Investments [Member] Modified coinsurance (reported in reinsurance recoverable) Reinsurance Recoverable Including Reinsurance Premium Paid [Member] Interest-only security (reported in fixed maturities) Available-for-sale Securities [Member] Indexed products (reported in liability for future policy benefits) Contract Holder Funds [Member] Modified coinsurance (reported in other liabilities) Other Liabilities [Member] Derivative, by Nature [Axis] Derivative Instrument [Axis] Derivative, Name [Domain] Derivative Contract [Domain] Equity Option Equity Option [Member] Embedded Derivative Financial Instruments - MODCO Embedded Derivative Financial Instruments - MODCO [Member] Embedded Derivative Financial Instruments - MODCO [Member] Embedded Derivative Financial Instruments - Interest only Security Embedded Derivative Financial Instruments - Interest only Security [Member] Embedded Derivative Financial Instruments - Interest only Security [Member] Embedded Derivative Financial Instruments Embedded Derivative Financial Instruments [Member] Income Statement Location [Axis] Income Statement Location [Axis] Income Statement Location [Domain] Income Statement Location [Domain] Investment Income Investment Income [Member] Interest sensitive product charges Insurance sensitive product charges [Member] Insurance sensitive product charges [Member] Derivative [Line Items] Derivative [Line Items] Derivative Assets Derivative Asset Derivative Asset, Assumed Derivative Asset, Assumed Derivative Asset, Assumed Derivative Liability Derivative Liability Derivative, Gain (Loss) on Derivative, Net Derivative, Gain (Loss) on Derivative, Net Fair Value Disclosure, Off-balance Sheet Risks, Amount, Asset Fair Value Disclosure, Off-balance Sheet Risks, Amount, Asset Net exposure to credit losses on derivatives Net exposure to credit losses on derivatives Net exposure to credit losses on derivatives Defined Benefit Plan, Change in Benefit Obligation [Roll Forward] Defined Benefit Plan, Change in Benefit Obligation [Roll Forward] Defined Benefit Plan, Pension Plan with Accumulated Benefit Obligation in Excess of Plan Assets, Projected Benefit Obligation Defined Benefit Plan, Pension Plan with Accumulated Benefit Obligation in Excess of Plan Assets, Projected Benefit Obligation Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss) Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss) Defined Benefit Plan, Benefit Obligation, Benefits Paid Defined Benefit Plan, Benefit Obligation, Benefits Paid Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Settlement Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Settlement Defined Benefit Plan, Benefit Obligation, Special and Contractual Termination Benefits Defined Benefit Plan, Benefit Obligation, Special and Contractual Termination Benefits Defined Benefit Plan, Pension Plan with Accumulated Benefit Obligation in Excess of Plan Assets, Projected Benefit Obligation Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] Fair Value of Plan Assets beginning of period Defined Benefit Plan, Plan Assets, Increase (Decrease) for Actual Return (Loss) Defined Benefit Plan, Plan Assets, Increase (Decrease) for Actual Return (Loss) Defined Benefit Plan, Plan Assets, Contributions by Employer Defined Benefit Plan, Plan Assets, Contributions by Employer Defined Benefit Plan, Plan Assets, Benefits Paid Defined Benefit Plan, Plan Assets, Benefits Paid Defined Benefit Plan, Plan Assets, Payment for Settlement Defined Benefit Plan, Plan Assets, Payment for Settlement Fair Value of Plan Assets, End of period Defined Benefit Plan, Funded (Unfunded) Status of Plan Defined Benefit Plan, Funded (Unfunded) Status of Plan Defined Benefit Plan, Accumulated Benefit Obligation Defined Benefit Plan, Accumulated Benefit Obligation Stockholders' Equity Note [Abstract] Stockholders' Equity Note Disclosure [Text Block] Stockholders' Equity Note Disclosure [Text Block] Accounting Policies [Abstract] Schedule of Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Variable Interest Entities [Axis] Variable Interest Entities [Axis] Variable Interest Entity, Classification [Domain] Variable Interest Entity, Classification [Domain] Low income housing tax credits Low income housing tax credits [Member] Investments in low income housing tax credits, as part of our equity method investments [Member] Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets Property and Equipment, Net Property, Plant and Equipment, Net Accumulated Depreciation Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Depreciation expense Depreciation Fair Value Disclosures [Abstract] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Measurement Basis [Axis] Measurement Basis [Axis] Fair Value Measurement [Domain] Fair Value Measurement [Domain] Portion at Fair Value Measurement Portion at Fair Value Measurement [Member] Estimate of Fair Value Measurement Estimate of Fair Value Measurement [Member] Fair Value, Valuation Source [Axis] Fair Value, Valuation Source [Axis] Fair Value, Valuation Source [Axis] Valuation Source [Domain] Valuation Source [Domain] Valuation Source [Domain] Third-party vendors Third-party Vendor [Member] Third-party Vendor valuation source [Member] Priced internally Internally priced [Member] Internally priced valuation source [Member] Measurement Frequency [Axis] Measurement Frequency [Axis] Measurement Frequency [Domain] Measurement Frequency [Domain] Fair Value, Measurements, Recurring Fair Value, Recurring [Member] Non-redeemable preferred stocks Nonredeemable Preferred Stock [Member] Significant unobservable inputs (Level 3) Valuation Approach and Technique [Axis] Valuation Approach and Technique [Axis] Valuation Approach and Technique [Domain] Valuation Approach and Technique [Domain] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Available-for-sale Securities Available-for-sale Securities Document and Entity Information [Abstract] Document and Entity Information [Abstract] Document Information [Table] Document Information [Table] Document Information [Line Items] Document Information [Line Items] Document Type Document Type Document Annual Report Document Annual Report Document Period End Date Document Period End Date Document Transition Report Document Transition Report Entity File Number Entity File Number Entity Registrant Name Entity Registrant Name Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Entity Tax Identification Number Entity Tax Identification Number Entity Address, Address Line One Entity Address, Address Line One Entity Address, City or Town Entity Address, City or Town Entity Address, State or Province Entity Address, State or Province Entity Address, Postal Zip Code Entity Address, Postal Zip Code City Area Code City Area Code Local Phone Number Local Phone Number Title of 12(b) Security Title of 12(b) Security Trading Symbol Trading Symbol Security Exchange Name Security Exchange Name Entity Well-known Seasoned Issuer Entity Well-known Seasoned Issuer Entity Voluntary Filers Entity Voluntary Filers Entity Current Reporting Status Entity Current Reporting Status Entity Interactive Data Current Entity Interactive Data Current Entity Filer Category Entity Filer Category Entity Small Business Entity Small Business Entity Emerging Growth Company Entity Emerging Growth Company Entity Shell Company Entity Shell Company Entity Public Float Entity Public Float Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Entity Central Index Key Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Amendment Flag Amendment Flag Affordable Housing Program [Abstract] Affordable Housing Program [Abstract] Summary of Investment Holdings [Table] Summary of Investment Holdings [Table] Collateral [Axis] Collateral [Axis] Collateral [Domain] Collateral [Domain] Collateral Pledged Collateral Pledged [Member] Summary of Investment Holdings [Line Items] Summary of Investment Holdings [Line Items] Deposit Assets Deposit Assets Debt Securities, Available-for-sale, Restricted Debt Securities, Available-for-sale, Restricted Investment, Non-Income Producing Flag Investment, non-income producing Carrying value of Investments which have been non-income producing for the past 12 months Debt Disclosure [Abstract] Debt Disclosure [Text Block] Debt Disclosure [Text Block] Commitments and Contingencies Disclosure [Abstract] Other Commitments [Table] Other Commitments [Table] Investment Type [Axis] Investment Type [Axis] Investments [Domain] Investments [Domain] Private Placement [Member] Private Placement [Member] Other Assets [Member] Other Assets [Member] Fixed Maturities Fixed Maturities [Member] Other Commitments [Line Items] Other Commitments [Line Items] Other Commitment Other Commitment Change in state insurance guaranty fund Change in state insurance guaranty fund Change in state insurance guaranty fund Stockholders' Equity Attributable to Parent [Abstract] Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Adjustments for New Accounting Pronouncements [Axis] Adjustments for New Accounting Pronouncements [Axis] Type of Adoption [Domain] Type of Adoption [Domain] Accounting Standards Update 2016-01 Accounting Standards Update 2016-01 [Member] Other Comprehensive Income Location [Axis] Other Comprehensive Income Location [Axis] Other Comprehensive Income Location [Domain] Other Comprehensive Income Location [Domain] reclassifications out of accumulated other comprehensive income reclassifications out of accumulated other comprehensive income [Member] Reclassifications out of accumulated other comprehensive income [Member] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Accumulated Net Unrealized Investment Gain (Loss) AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Parent [Member] Accumulated Other-than-Temporary Impairment Accumulated Other-than-Temporary Impairment Attributable to Parent [Member] Accumulated Defined Benefit Plans Adjustment Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] AOCI Attributable to Parent AOCI Attributable to Parent [Member] Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets Reclassification related to the Tax Act Reclassification related to the Tax Act Reclassification related to the Tax Act Other Comprehensive Income (Loss), Securities, Available-for-sale, Adjustment, before Reclassification Adjustments, Net of Tax Other Comprehensive Income (Loss), Securities, Available-for-sale, Adjustment, before Reclassification Adjustments, after Tax Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, before Reclassification Adjustment, Net of Tax Other Comprehensive (Income) Loss, Defined Benefit Plan, before Reclassification Adjustment, after Tax Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI for Write-down of Securities, Net of Tax Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI for Write-down of Securities, Net of Tax Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Gain (Loss), Reclassification Adjustment from AOCI, Net of Tax Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, after Tax Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI, Net of Tax, Attributable to Parent Statutory Insurance Information [Abstract] Statutory Insurance Information [Abstract] Statutory Accounting Practices [Table] Statutory Accounting Practices [Table] Statutory Surplus Statutory Surplus [Member] Statutory Surplus [Member] Statutory Net Income Statutory Net Income [Member] Statutory Net Income [Member] Statutory Accounting Practices [Line Items] Statutory Accounting Practices [Line Items] Statutory accounting practices, net gain from operations Statutory accounting practices, net gain from operations Statutory accounting practices, net gain from operations (excludes impact of realized gains and losses on investments) Statutory Accounting Practices, Statutory Net Income Amount Statutory Accounting Practices, Statutory Net Income Amount State Insurance Department, Statutory to NAIC, Amount of Reconciling Item State Insurance Department, Statutory to NAIC, Amount of Reconciling Item Statutory Accounting Practices, Statutory Capital and Surplus, Balance Statutory Accounting Practices, Statutory Capital and Surplus, Balance Dividend Payments Restrictions Schedule, Statutory Capital and Surplus Dividend Payments Restrictions Schedule, Statutory Capital and Surplus Statutory RBC Total adjusted capital Statutory RBC Total adjusted capital Statutory RBC Total adjusted capital Statutory Accounting Practices, Statutory Capital and Surplus Required Statutory Accounting Practices, Statutory Capital and Surplus Required Statutory RBC Ratio Statutory RBC Ratio Statutory RBC Ratio Statutory Accounting Practices, Statutory Amount Available for Dividend Payments Statutory Accounting Practices, Statutory Amount Available for Dividend Payments Accounting Changes and Error Corrections [Abstract] New Accounting Pronouncements or Change in Accounting Principle [Table] New Accounting Pronouncements or Change in Accounting Principle [Table] Retained Earnings Retained Earnings [Member] Accounting Standards Update 2016-02 Accounting Standards Update 2016-02 [Member] New Accounting Pronouncements or Change in Accounting Principle [Line Items] New Accounting Pronouncements or Change in Accounting Principle [Line Items] New Accounting Pronouncement or Change in Accounting Principle, Effect of Change on Net Income New Accounting Pronouncement or Change in Accounting Principle, Effect of Change on Net Income New Accounting Pronouncement or Change in Accounting Principle, Effect of Change on Basic Earnings Per Share New Accounting Pronouncement or Change in Accounting Principle, Effect of Change on Basic Earnings Per Share New Accounting Pronouncement or Change in Accounting Principle, Effect of Change on Diluted Earnings Per Share New Accounting Pronouncement or Change in Accounting Principle, Effect of Change on Diluted Earnings Per Share Cumulative Effect on Retained Earnings, Net of Tax Cumulative Effect on Retained Earnings, Net of Tax Operating Lease, Right-of-Use Asset Operating Lease, Right-of-Use Asset Operating Lease, Liability Operating Lease, Liability Defined Benefit Plan, Plan Assets Level 3 Reconciliation, Increase (Decrease) for Purchase, Sale, and Settlement Defined Benefit Plan, Plan Assets Level 3 Reconciliation, Increase (Decrease) for Purchase, Sale, and Settlement Defined Benefit Plan, Plan Assets Level 3 Reconciliation, Increase (Decrease) for Actual Return (Loss) on Plan Assets Still Held Defined Benefit Plan, Plan Assets Level 3 Reconciliation, Increase (Decrease) for Actual Return (Loss) on Plan Assets Still Held Defined Benefit Plan, Plan Assets Level 3 Reconciliation, Increase (Decrease) for Actual Return (Loss) on Plan Assets Sold Defined Benefit Plan, Plan Assets Level 3 Reconciliation, Increase (Decrease) for Actual Return (Loss) on Plan Assets Sold Defined Benefit Plan, Plan Assets Level 3 Reconciliation, Increase (Decrease) for Assets Transferred into (out of) Level 3 Defined Benefit Plan, Plan Assets Level 3 Reconciliation, Increase (Decrease) for Assets Transferred into (out of) Level 3 Recognition of underwriting, acquisition and insurance costs [Table] Recognition of underwriting, acquisition and insurance costs [Table] Recognition of underwriting, acquisition and insurance costs [Table] Statistical Measurement [Axis] Statistical Measurement [Axis] Statistical Measurement [Domain] Statistical Measurement [Domain] Recognition of underwriting, acquisition and insurance costs [Line Items] Recognition of underwriting, acquisition and insurance costs [Line Items] [Line Items] for Recognition of underwriting, acquisition and insurance costs [Table] Commission expense, net of deferrals Insurance Commissions Amortization of deferred acquisition costs Deferred Policy Acquisition Costs, Amortization Expense Amortization of value of insurance in force acquired Present Value of Future Insurance Profits, Period Increase (Decrease) Other underwriting, acquisition and insurance expenses, net of deferrals Other Underwriting Expense Total Selling, General and Administrative Expense Sch II - Condensed Financial Information on Registrant [Abstract] Sch II - Condensed Financial Information on Registrant [Abstract] Dividends in form of cash Dividends in form of cash [Member] Dividends in form of cash [Member] Income Tax Disclosure [Text Block] Income Tax Disclosure [Text Block] Realized gains losses on investments [Abstract] Realized gains losses on investments [Abstract] Schedule of Gain (Loss) on Securities [Table] Schedule of Gain (Loss) on Securities [Table] Equity Securities Equity Securities [Member] Debt Security Category [Axis] Debt Security Category [Axis] Gain (Loss) on Investments, Including Marketable Securities and Investments Held at Cost, Categories of Investments [Domain] Other than Temporary Impairment, Credit Losses Recognized in Earnings, Categories of Investments [Domain] Categories of Investments, Marketable Securities, Available-for-sale Securities Categories of Investments, Cost-method Investments Cost-method Investments [Member] Impairments by type [Axis] Impairments by type [Axis] Impairments by type [Axis] Total impairments on investments [Domain] Total impairments on investments [Domain] Total impairments on investments [Domain] Credit-related portion of fixed maturity losses (2) Credit related portion of fixed maturity losses [Member] Amount represents the credit-related losses recognized for fixed maturities which were not written down to fair value. As discussed above the non-credit portion of the losses have been recognized in other comprehensive income. Other credit-related (3) Other credit related impairments [Member] Amount represents credit-related losses for mortgage loans, real estate and fixed maturities written down to fair value. Gain (Loss) on Securities [Line Items] Gain (Loss) on Securities [Line Items] Gross gains Available-for-sale Securities, Gross Realized Gains Gross losses Available-for-sale Securities, Gross Realized Losses Equity securities Available-for-sale Securities, Gross Realized Gain (Loss), Excluding Other than Temporary Impairments Mortgage loans Gain (Loss) on Sales of Loans, Net Real estate Gains (Losses) on Sales of Other Real Estate Other Gain (Loss) on Disposition of Other Financial Assets Gain (Loss) on sale of Investments, Excluding Other than Temporary Impairments Gain (Loss) on sale of Investments, Excluding Other than Temporary Impairments Gain (Loss) on sale of Investments, Excluding Other than Temporary Impairments Gain (Loss) on Investments, Excluding Other than Temporary Impairments Gain (Loss) on Investments, Excluding Other than Temporary Impairments New Accounting Pronouncement or Change in Accounting Principle, Effect of Change on Operating Results New Accounting Pronouncement or Change in Accounting Principle, Effect of Change on Operating Results Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net Net realized gains (losses) on investments recorded in income Gain (Loss) on Investments Proceeds from Sale of Debt Securities, Available-for-sale Proceeds from Sale of Debt Securities, Available-for-sale Reconciliation of Revenue from Segments to Consolidated [Table Text Block] Reconciliation of Revenue from Segments to Consolidated [Table Text Block] Schedule of Segment Reporting Information, by Segment [Table Text Block] Schedule of Segment Reporting Information, by Segment [Table Text Block] Reconciliation of non-GAAP measures [Table Text Block] Reconciliation of non-GAAP measures [table text block] [Table Text Block] Reconciliation of non-GAAP measures used to my management to evaluate segment performance to corresponding line items in our GAAP financial statements [Table Text Block] Schedule IV. Reinsurance [Abstract] Schedule IV. Reinsurance [Abstract] SEC Schedule, 12-17, Insurance Companies, Reinsurance [Table] SEC Schedule, 12-17, Insurance Companies, Reinsurance [Table] Reinsurance Premiums for Insurance Companies, by Product Segment [Domain] Accident and health premiums Accident and Health Insurance Product Line [Member] SEC Schedule, 12-17, Insurance Companies, Reinsurance [Line Items] SEC Schedule, 12-17, Insurance Companies, Reinsurance [Line Items] Direct Premiums, Life Insurance in Force SEC Schedule, 12-17, Insurance Companies, Reinsurance, Life Insurance in Force, Gross Ceded Premiums, Life Insurance in Force SEC Schedule, 12-17, Insurance Companies, Reinsurance, Life Insurance in Force, Ceded Assumed Premiums, Life Insurance in Force SEC Schedule, 12-17, Insurance Companies, Reinsurance, Life Insurance in Force, Assumed Premiums, Net, Life Insurance in Force SEC Schedule, 12-17, Insurance Companies, Reinsurance, Life Insurance in Force, Net Life Insurance in Force Premiums, Percentage Assumed to Net SEC Schedule, 12-17, Insurance Companies, Reinsurance, Life Insurance in Force, Percentage Assumed to Net Direct Premiums Earned Direct Premiums Earned Ceded Premiums Earned Ceded Premiums Earned Assumed Premiums Earned Assumed Premiums Earned Premiums Earned, Net Premiums Earned, Net SEC Schedule, 12-17, Insurance Companies, Reinsurance, Premium, Percentage Assumed to Net SEC Schedule, 12-17, Insurance Companies, Reinsurance, Premium, Percentage Assumed to Net Schedule III. Supplementary Insurance Information [Abstract] Schedule III. Supplementary Insurance Information [Abstract] SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Table] SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Table] Scenario, Adjustment Scenario, Adjustment [Member] Life Insurance Life Segment [Member] Life Segment [Member] SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Line Items] SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Line Items] SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Deferred Policy Acquisition Cost SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Deferred Policy Acquisition Cost SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Liability for Future Policy Benefit, Loss, Claim and Loss Expense SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Liability for Future Policy Benefit, Loss, Claim and Loss Expense SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Unearned Premium SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Unearned Premium SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Other Policy Claim and Benefit Payable SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Other Policy Claim and Benefit Payable SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Premium Revenue SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Premium Revenue Unearned revenue reserve, amortization due to realized gains Unearned revenue reserve, amortization due to realized gains Unearned revenue reserve, amortization due to realized gains SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Net Investment Income SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Net Investment Income Investment Income, Nonoperating Investment Income, Nonoperating SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Benefit, Claim, Loss and Settlement Expenses SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Benefit, Claim, Loss and Settlement Expenses Deferred sales inducements, amortization due to unrealized gains losses Deferred sales inducements, amortization due to unrealized gains losses Deferred sales inducements, amortization due to unrealized gains losses Deferred sales inducements, amortization due to realized gains losses Deferred sales inducements, amortization due to realized gains losses Deferred sales inducements, amortization due to realized gains losses SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Amortization of Deferred Policy Acquisition Cost SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Amortization of Deferred Policy Acquisition Cost Deferred Policy Acquisition Cost, Amortization Expense, Unrealized Investment Gains (Losses) Deferred Policy Acquisition Cost, Unrealized Investment Gain (Loss) Deferred Policy Acquisition Cost, Amortization Expense, Net Investment Gains (Losses) Deferred Policy Acquisition Cost, Amortization Expense, Net Investment Gains (Losses) SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Other Operating Expense SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Other Operating Expense Present Value of Future Profits, amortization due to realized gains losses Present Value of Future Profits, amortization due to realized gains losses Present Value of Future Profits, amortization due to realized gains losses Significant Accounting Policies [Abstract] Significant Accounting Policies [Abstract] Significant Accounting Policies [Text Block] Basis of Presentation and Significant Accounting Policies [Text Block] Significant Accounting Policies Investments [Text Block] Significant Accounting Policies [Text Block] Organization, Consolidation, Basis of Presentation, Business Description and Accounting Policies [Text Block] Organization, Consolidation, Basis of Presentation, Business Description and Accounting Policies [Text Block] Leases [Abstract] Lessee, Operating Lease, Liability, Maturity [Table Text Block] Lessee, Operating Lease, Liability, Maturity [Table Text Block] Operating Leases [Table] Operating Leases [Table] Operating Leases [Table] Majority Shareholder Majority Shareholder [Member] Operating Leases [Line Items] Operating Leases [Line Items] [Line Items] for Operating Leases [Table] Lessee, Operating Lease, at Carrying Value Lessee, Operating Lease, at Carrying Value Lessee, Operating Lease, at Carrying Value Lessee, Operating Lease, Discount Rate Lessee, Operating Lease, Discount Rate Operating Lease, Expense Operating Lease, Expense Operating Leases, Rent Expense Operating Leases, Rent Expense Deferred Revenue, Revenue Recognized Deferred Revenue, Revenue Recognized Deferred Revenue, Noncurrent Deferred Revenue, Noncurrent Lessee, Operating Lease, Liability, Payments, Due Next Twelve Months Lessee, Operating Lease, Liability, Payments, Due Next Twelve Months Lessee, Operating Lease, Liability, Payments, Due Year Two Lessee, Operating Lease, Liability, Payments, Due Year Two Lessee, Operating Lease, Liability, Payments, Due Year Three Lessee, Operating Lease, Liability, Payments, Due Year Three Lessee, Operating Lease, Liability, Payments, Due Year Four Lessee, Operating Lease, Liability, Payments, Due Year Four Lessee, Operating Lease, Liability, Payments, Due Year Five Lessee, Operating Lease, Liability, Payments, Due Year Five Lessee, Operating Lease, Liability, Payments, Due after Year Five Lessee, Operating Lease, Liability, Payments, Due after Year Five Lessee, Operating Lease, Liability, Payments, Due Lessee, Operating Lease, Liability, Payments, Due Lessee, Operating Lease, Future Value of Interest Expense Lessee, Operating Lease, Future Value of Interest Expense Lessee, Operating Lease, Future Value of Interest Expense Reinsurance [Text Block] Reinsurance [Text Block] Present Value of Future Insurance Profits [Text Block] Present Value of Future Insurance Profits [Text Block] Schedule of Minimum Guaranteed Benefit Liabilities [Table Text Block] Schedule of Minimum Guaranteed Benefit Liabilities [Table Text Block] Net Unrealized Gains (Losses) on Investments in Accumulated Other Comprehensive Income [Abstract] Net Unrealized Gains (Losses) on Investments in Accumulated Other Comprehensive Income [Abstract] Net Unrealized Gains Losses [Table] Net Unrealized Gains Losses [Table] Net Unrealized Gains/Losses with offsets [Table] Accumulated net unrealized investment gain (loss) Accumulated net unrealized investment gain AND OTTI [Member] Accumulated net unrealized investment gain AND OTTI [Member] Net Unrealized Gains Losses [Line Items] Net Unrealized Gains Losses [Line Items] Net Unrealized Gains Losses on investments in accumulated other comprehensive income. Includes adjustmetns for assumed changes in amortization patterns and provision for taxes. [Line Items] Available-for-sale Securities, Accumulated Gross Unrealized Gain (Loss), before Tax Available-for-sale Securities, Accumulated Gross Unrealized Gain (Loss), before Tax Assumed changes in amortization of DAC Assumed changes in amortization of DAC Adjustment for assumed changes in amortization of DAC on net unrealized appreciation/depreciation on investments Impact of net unrealized investment gains and losses Assumed changes in amortization patter of VIIF Adjustment for assumed changes in amortization of VIIF on net unrealized appreciation/depreciation on investments Assumed changes in amortization patter of URR Assumed changes in amortization patter of URR Adjustment for assumed changes in amortization of Unearned Revenue Reserves on net unrealized appreciation/depreciation on investments Assumed changes in policyholder liability Assumed changes in policyholder liability Assumed changes in policyholder liability Provision for deferred income taxes Provision Deferred Income Tax Benefits, Expense This item represents the applicable deferred income tax impacts of cumulative net unrealized gains/losses on fixed maturities available-for-sale, equity securities available-for-sale and derivative instruments net of adjustments related deferred policy acquisition costs, sales inducements, value of insurance inforce and unearned revenue reserves. Net Unrealized gains losses on investments in Accumulated other comprehensive Income Net Unrealized gains losses on investments in Accumulated other comprehensive Income Net Unrealized gains losses on investments in accumulated other comprehensive income. Pre-Tax on Equity Income (Loss) Pre-Tax on Equity Income (Loss) Pre-Tax on Equity Income (Loss) Income Tax on Equity Income Income Tax on Equity Income Income Tax on Equity Income Equity income, net of related income taxes Income (Loss) from Equity Method Investments SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Disclosure [Text Block] SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information, Disclosure [Text Block] Available-For-Sale Fixed Maturity Securities by Investment Category Available-for-sale Securities [Table Text Block] Available-For-Sale Fixed Maturities by Maturity Date Investments Classified by Contractual Maturity Date [Table Text Block] Net Unrealized Gains on Investments in Accumulated Other Comprehensive Income Unrealized Gain (Loss) on Investments [Table Text Block] Change in Unrealized Appreciation/Depreciation of Investments - Recorded in Accumulated Other Comprehensive Income Change in unrealized appreciation depreciation of investments [Table Text Block] Change in unrealized appreciation depreciation of investments [Table Text Block] Fixed Maturity Securities with Unrealized Losses by Length of Time Schedule of Unrealized Loss on Investments [Table Text Block] Mortgage Loans by Collateral Type Mortgage Loans by Colateral Type [Table Text Block] Mortgage Loans by Colateral Type [Table Text Block] Mortgage Loans by Geographic Location within the United States Mortgage Loans by Geograpic Location [Table Text Block] Mortgage Loans by Geograpic Location [Table Text Block] Mortgage Loans by Loan-to-Value Ratio Mortgage Loans by loan to value ratio [Table Text Block] Mortgage Loans by loan to value ratio [Table Text Block] Mortgage Loans by Year of Origination Mortgage loans by year of origination [Table Text Block] Mortgage loans by year of origination [Table Text Block] Impaired Mortgage Loans Impaired Financing Receivables [Table Text Block] Allowance on Mortgage Loans Financing Receivable, Allowance for Credit Loss [Table Text Block] Components of Net Investment Income Investment Income [Table Text Block] Realized Gains (Losses) - Recorded in Income Realized Gain (Loss) on Investments [Table Text Block] Credit Loss Component of Other-than-temporary Impairments on Fixed Maturities Other than Temporary Impairment, Credit Losses Recognized in Earnings [Table Text Block] VIE Investments by Category Schedule of Variable Interest Entities [Table Text Block] Schedule of Derivative Instruments Schedule of Derivative Instruments [Table Text Block] SEC Schedule, 12-17, Insurance Companies, Reinsurance [Text Block] SEC Schedule, 12-17, Insurance Companies, Reinsurance [Text Block] Consolidated Balance Sheets [Abstract] Consolidated Balance Sheets [Abstract] Available-for-sale Securities, Debt Maturities, Amortized Cost Basis Equity Securities, Cost Equity Securities, Cost Equity Securities, Cost Preferred stock, shares authorized Preferred Stock, Shares Authorized Preferred stock, shares issued Preferred Stock, Shares Issued Preferred stock, shares outstanding Preferred Stock, Shares Outstanding Common stock, shares authorized Common Stock, Shares Authorized Common Stock, Shares, Issued Common Stock, Shares, Issued Common stock, shares outstanding Common Stock, Shares, Outstanding Premiums and product charges Premiums and product charges Insurance premiums net of reinsurance on traditional life products and product charges earned on interest sensitive products Components of Net Investment Income [Abstract] Components of Net Investment Income [Abstract] Schedule of Investment Income, Reported Amounts, by Category [Table] Investment Income [Table] Fixed maturities - available for sale Equity securities Mortgage loans Mortgages [Member] Policy loans Policy Loans [Member] Short-term investments, cash and cash equivalents Short-term Investments [Member] Schedule of Investment Income, Reported Amounts, by Category [Line Items] Net Investment Income [Line Items] Gross Investment Income, Operating Gross Investment Income, Operating Derivative income (loss) Gain (Loss) on Derivative Instruments, Net, Pretax Prepayment fee income and other Net Investment Income, insurance entity, prepayment fee income and other Net Investment Income, insurance entity, prepayment fee income and other Less investment expenses Investment Income, Investment Expense Net investment income Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Credit loss component of other-than-temporary impairments on fixed maturity securities [Abstract] Credit loss component of other-than-temporary impairments on fixed maturity securities [Abstract] Schedule of Other than Temporary Impairment, Credit Losses Recognized in Earnings [Table] Schedule of Other than Temporary Impairment, Credit Losses Recognized in Earnings [Table] Other than Temporary Impairment, Credit Losses Recognized in Earnings, Categories of Investments [Domain] Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items] Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items] Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward] Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward] Balance at beginning of period Other than Temporary Impairment, Credit Losses Recognized in Earnings, Credit Losses on Debt Securities Held Increases to previously impaired investments Other than Temporary Impairment, Credit Losses Recognized in Earnings, Additions, Additional Credit Losses Reductions due to investments sold Other than Temporary Impairment, Credit Losses Recognized in Earnings, Reductions, Securities Sold Reduction for credit loss that no longer has a portion of the OTTI loss recognized in other comprehensive income Other than Temporary Impairment, Credit Losses Recognized in Earnings, Reductions, Change in Status Balance at end of period Statement of Financial Position [Abstract] Common stocks Common Stock [Member] Investments: Fixed maturities - available for sale, at fair value (amortized cost: 2019 - $7,015,269; 2018 - $6,856,277) Mortgage loans Mortgage Loans on Real Estate, Commercial and Consumer, Net Real estate Real Estate Investments, Net Policy loans Loans, Gross, Insurance Policy Other investments Other Investments Total investments Investments Securities and indebtedness of related parties Equity Method Investments Reinsurance recoverable Reinsurance Recoverables, Including Reinsurance Premium Paid Deferred acquisition costs Deferred Policy Acquisition Cost Value of insurance in force acquired Present Value of Future Insurance Profits, Net Assets held in separate accounts Separate Account Asset Total assets Liabilities: Liabilities [Abstract] Policy liabilities and accruals: Liability for Future Policy Benefits and Unpaid Claims and Claims Adjustment Expense [Abstract] Future policy benefits: Liability for Future Policy Benefit, before Reinsurance [Abstract] Interest sensitive products Interest sensitive products The accrued obligation to policyholders at the balance sheet date that relates to universal life and variable universal life insurance policies; individual and group annuities (including fixed rate, index and variable); and supplemental contracts involving life contingencies. Traditional life insurance and accident and health products Liability for Future Policy Benefits, Life Other policy claims and benefits Other policy claims and benefits Amounts payable for death benefits net of reinsurance. Also includes an unearned revenue reserve that relect the unamortized balance of charges assessed to interest sensitive contracts to compensate us for services to be performed over future periods. Supplementary contracts without life contingencies Deposit Contracts, Liabilities Amounts payable to affiliates Other Policyholder Funds Deferred income taxes Deferred Tax Liabilities, Net Other liabilities Other Liabilities Liabilities related to separate accounts Separate Account, Liability Total liabilities Stockholders' equity: Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] FBL Financial Group, Inc. stockholders' equity: Preferred stock, without par value, at liquidation value - authorized 10,000,000 shares, issued and outstanding 5,000,000 Series B shares Total FBL Financial Group, Inc. stockholders’ equity Noncontrolling interest Stockholders' Equity Attributable to Noncontrolling Interest Total stockholders’ equity Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Total liabilities and stockholders’ equity Schedule of Multiemployer Plans [Table Text Block] Schedule of Multiemployer Plans [Table Text Block] Defined Benefit Plan, Plan with Accumulated Benefit Obligation in Excess of Plan Assets [Table Text Block] Defined Benefit Plan, Plan with Accumulated Benefit Obligation in Excess of Plan Assets [Table Text Block] Schedule of Net Benefit Costs [Table Text Block] Schedule of Net Benefit Costs [Table Text Block] Schedule of Defined Benefit Plans Disclosures [Table Text Block] Schedule of Defined Benefit Plans Disclosures [Table Text Block] Defined Benefit Plan, Assumptions [Table Text Block] Defined Benefit Plan, Assumptions [Table Text Block] Schedule of Allocation of Plan Assets [Table Text Block] Schedule of Allocation of Plan Assets [Table Text Block] Schedule of Level Three Defined Benefit Plan Assets Roll Forward [Table Text Block] Schedule of Effect of Significant Unobservable Inputs, Changes in Plan Assets [Table Text Block] Alternative investments Alternative investments [Member] Alternative investments [Member] Liability Driven Investing Strategy Liability Driven Investing Strategy [Member] Liability Driven Investing Strategy [Member] Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Rate of Compensation Increase Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Rate of Compensation Increase Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Rate of Return on Plan Assets Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Rate of Return on Plan Assets Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Rate of Compensation Increase Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Rate of Compensation Increase Defined Benefit Plan, Plan Assets, Target Allocation, Percentage Defined Benefit Plan, Plan Assets, Target Allocation, Percentage Defined Benefit Plan, Plan Assets, Actual Allocation, Percentage Defined Benefit Plan, Plan Assets, Actual Allocation, Percentage Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Schedule of Deferred Tax Assets and Liabilities [Table Text Block] Schedule of Deferred Tax Assets and Liabilities [Table Text Block] Reclassification out of Accumulated Other Comprehensive Income [Table] Reclassification out of Accumulated Other Comprehensive Income [Table] Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items] Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items] Net realized capital gains on sales of investments Change in offsets to unrealized on investments Change in offsets to unrealized on investments Change in offsets to unrealized on investments, includes changes in amortization pattern of DAC, VIIF & URR and provision for deferred income tax. Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Gain (Loss), Reclassification Adjustment from AOCI, before Tax Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, before Tax Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI for Write-down of Securities, before Tax Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI for Write-down of Securities, before Tax Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI for Pension and Other Postretirement Benefit Plans, before Tax Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, before Tax Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI Attributable to Parent, before Tax Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI for Write-down of Securities, Tax Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI for Write-down of Securities, Tax Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI for Pension and Other Post Retirement Benefit Plans, Tax Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, Tax Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI, Net of Tax, Portion Attributable to Parent Maximum Maximum [Member] Disaster [Axis] Catastrophic Event [Axis] Catastrophic Event [Domain] Catastrophic Event [Domain] Company sponsored agent trip Company sponsored agent trip [Member] Company sponsored agent trip - this maximum would apply to policies written on agents of the Company who are participating in Company-sponsored incentive trips. Home office Home office [Member] Home office - maximum occurrance limits apply to catastrophes involving the home office building. 100% Quota Share Accidental Death 100% Quota Share Accidental Death [Member] 100% Quota Share Accidental Death catastophy reinsurance agreement includes acts of terrorism and applies to agents on Company-sponsored trips[Member] Reinsurance retention limit Reinsurance retention limit Reinsurance retention limit is the amount of risk the company accepts on any one life. Loss Contingency, Estimate of Possible Loss Loss Contingency, Estimate of Possible Loss Reinsurance Effect on Claims and Benefits Incurred, Amount Ceded Policyholder Benefits and Claims Incurred, Ceded Ceded reinsurance allowances for expenses and commissions Ceded reinsurance allowances for expenses and commissions Ceded reinsurance allowances for expenses and commissions Policyholder Benefits and Claims Incurred, Assumed Policyholder Benefits and Claims Incurred, Assumed Assumed reinsurance allowances for expenses and commissions Assumed reinsurance allowances for expenses and commissions Assumed reinsurance allowances for expenses and commissions Reinsurance effect on in force ceded, percentage Reinsurance effect on in force ceded, percentage Reinsurance effect on in force ceded, percentage Contracts in Force Subject to Participation Through Reinsurance, Percentage Contracts in Force Subject to Participation through Reinsurance, Ratio Schedule of Multiemployer Plans [Table] Schedule of Multiemployer Plans [Table] Multiemployer Plans [Line Items] Multiemployer Plans [Line Items] Multiemployer Plan Number Multiemployer Plan Number Multiemployer Plan, Contributions by Employer Multiemployer Plan, Contributions by Employer Dividends Declared [Table Text Block] Dividends Declared [Table Text Block] Schedule of Stock by Class [Table Text Block] Schedule of Stock by Class [Table Text Block] Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Reclassification out of Accumulated Other Comprehensive Income [Table Text Block] Reclassification out of Accumulated Other Comprehensive Income [Table Text Block] Other income and other expense [Table] Other income and other expense [Table] Other income and other expense [Table] Minimum Minimum [Member] Participating Life Insurance Contract [Member] Participating Life Insurance Contract [Member] Investment Advice [Member] Investment Advice [Member] Interest Sensitive Life [Member] Interest Sensitive Life [Member] Other income and other expense [Line Items] Other income and other expense [Line Items] [Line Items] for Other income and other expense [Table] Future Policy Benefits, Interest Rate Assumptions Liability for Future Policy Benefit by Product Segment, Interest Rate, Year of Issue Future policy benefits, assumptions, average rate in investment yields in gross margin estimation Future policy benefits, assumptions, average rate in investment yields in gross margin estimation Future policy benefits, assumptions, average rate in investment yields in gross margin estimation Other Policyholder Claims and Benefits Policyholder Benefits and Claims Incurred, Net [Abstract] Premiums from policies subject to participation in dividends Premiums from policies subject to participation in dividends Premiums from policies subject to participation in dividends Contracts in force subject to participation in dividends Contracts in force subject to participation in dividends Contracts in force subject to participation in dividends Other Income and Expenses [Abstract] Other Income and Expenses [Abstract] Real Estate Owned, Valuation Allowance Real Estate Owned, Valuation Allowance Lease income Operating Leases, Income Statement, Lease Revenue Nonoperating Income (Expense) Nonoperating Income (Expense) Recognition of underwriting, acquisition and insurance costs Recognition of underwriting, acquisition and insurance costs [Table Text Block] [Table Text Block] for Recognition of underwriting, acquisition and insurance costs [Table] Shares of common stock repurchased Stock Repurchased During Period, Shares Purchase of common stock Stock Repurchased During Period, Value Stock Repurchase Program, Remaining Authorized Repurchase Amount Stock Repurchase Program, Remaining Authorized Repurchase Amount Stock Issued During Period, Shares, Stock-based Compensation, Net of Forfeitures Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture Stock-based compensation Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture Board of directors members Board of directors members Board of directors - number of members Sale of Stock, Percentage of Ownership after Transaction Sale of Stock, Percentage of Ownership after Transaction Preferred Stock, Liquidation Preference Per Share Preferred Stock, Liquidation Preference Per Share Preferred Stock, Redemption Price Per Share Preferred Stock, Redemption Price Per Share Concentration Risk [Table] Concentration Risk [Table] Geographical [Axis] Geographical [Axis] Geographical [Domain] Geographical [Domain] IOWA IOWA KANSAS KANSAS OKLAHOMA OKLAHOMA Concentration Risk [Line Items] Concentration Risk [Line Items] Concentration Risk, Percentage Concentration Risk, Percentage Net Cash Provided by (Used in) Operating Activities Net Cash Provided by (Used in) Operating Activities Proceeds from Maturities, Prepayments and Calls of Debt Securities, Available-for-sale Proceeds from Maturities, Prepayments and Calls of Debt Securities, Available-for-sale Equity securities Payments to Acquire Available-for-sale Securities, Equity Short-term investments, net change Payments for (Proceeds from) Short-term Investments Net Cash Provided by (Used in) Investing Activities Net Cash Provided by (Used in) Investing Activities Repurchase of common stock, net Proceeds from (Repurchase of) Equity Capital contribution by parent to subsidiary Capital contribution by parent to subsidiary Capital contribution by parent to subsidiary, eliminated in consolidation, for parent only financial statements. Dividends paid Payments of Ordinary Dividends, Common Stock Net Cash Provided by (Used in) Financing Activities Net Cash Provided by (Used in) Financing Activities Increase in cash and cash equivalents Cash and Cash Equivalents, Period Increase (Decrease) Cash and cash equivalents at end of year Cash and cash equivalents at beginning of year Income Taxes Received, Net Income Taxes Paid, Net Cash paid during the period for interest Interest Paid, Including Capitalized Interest, Operating and Investing Activities Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Private Equity Funds, US Private Equity Funds, US [Member] 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] Mortgage-backed Securities Available-for-sale, Fair Value Disclosure Mortgage-backed Securities Available-for-sale, Fair Value Disclosure Other investments Cash, cash equivalents and short-term investments Cash and short-term investments, fair value disclosure Cash and short-term investments, fair value disclosure Reinsurance recoverable Embedded Derivative, Fair Value of Embedded Derivative Asset Assets, Fair Value Disclosure Assets, Fair Value Disclosure Future policy benefits - indexed product embedded derivatives Liabilities Related to Investment Contracts, Fair Value Disclosure Other liabilities Other Liabilities, Fair Value Disclosure Liabilities, Fair Value Disclosure Financial and Nonfinancial Liabilities, Fair Value Disclosure Alternative Investment Alternative Investment Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Unfunded Commitments Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Unfunded Commitments Debt Securities, Available-for-sale [Abstract] Amortized Cost Available-for-sale Securities, Amortized Cost Basis Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax Fair Value Non-credit losses on other-than-temporary impairments (1) Other than Temporary Impairment Losses, Investments Portion in Other Comprehensive Income, Before Tax, Including Portion Attributable to Noncontrolling Interest, Available-for-sale Securities The amount of other than temporary impairment loss on an available-for-sale debt security related to factors other than credit losses when the entity does not intend to sell the security and it is not more likely than not that the entity will be required to sell the security before recovery of its amortized cost basis. This amount, which includes the portion attributable to the noncontrolling interest, if any, is a portion of the deduction from the total impairment losses of investments (before taxes) presented on the income statement; this amount is also referred to as the amount incurred by the reporting entity or the consolidated entity. Liability Class [Axis] Liability Class [Axis] Fair Value by Liability Class [Domain] Fair Value by Liability Class [Domain] Index Product Embedded Derivatives Index Product Embedded Derivatives [Member] Index Product Embedded Derivatives included in future policy benefits [Member] 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] Asset Balance at beginning of period Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value Asset Purchases Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases Asset Sales Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales Asset, Gain (Loss) Included in Earnings Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings