0000001 - Document - Cover link:presentationLink link:calculationLink link:definitionLink 0000002 - Document - Audit Information link:presentationLink link:calculationLink link:definitionLink 9952151 - Statement - CONSOLIDATED STATEMENTS OF OPERATIONS link:presentationLink link:calculationLink link:definitionLink 9952152 - Statement - CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME link:presentationLink link:calculationLink link:definitionLink 9952153 - Statement - CONSOLIDATED STATEMENTS OF FINANCIAL POSITION link:presentationLink link:calculationLink link:definitionLink 9952154 - Statement - CONSOLIDATED STATEMENTS OF FINANCIAL POSITION (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 9952155 - Statement - CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY link:presentationLink link:calculationLink link:definitionLink 9952156 - Statement - CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 9952157 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS link:presentationLink link:calculationLink link:definitionLink 9952158 - Disclosure - Nature of Operations link:presentationLink link:calculationLink link:definitionLink 9952159 - Disclosure - Significant Accounting Policies link:presentationLink link:calculationLink link:definitionLink 9952160 - Disclosure - Revenue link:presentationLink link:calculationLink link:definitionLink 9952161 - Disclosure - Segment Information link:presentationLink link:calculationLink link:definitionLink 9952162 - Disclosure - Earnings Per Share link:presentationLink link:calculationLink link:definitionLink 9952163 - Disclosure - Fair Value link:presentationLink link:calculationLink link:definitionLink 9952164 - Disclosure - Investments link:presentationLink link:calculationLink link:definitionLink 9952165 - Disclosure - Fixed Assets link:presentationLink link:calculationLink link:definitionLink 9952166 - Disclosure - Bank Line of Credit link:presentationLink link:calculationLink link:definitionLink 9952167 - Disclosure - Postretirement Benefits link:presentationLink link:calculationLink link:definitionLink 9952168 - Disclosure - Incentive and Deferred Compensation Plans link:presentationLink link:calculationLink link:definitionLink 9952169 - Disclosure - Income Taxes link:presentationLink link:calculationLink link:definitionLink 9952170 - Disclosure - Capital Stock link:presentationLink link:calculationLink link:definitionLink 9952171 - Disclosure - Accumulated Other Comprehensive Income (Loss) link:presentationLink link:calculationLink link:definitionLink 9952172 - Disclosure - Related Party link:presentationLink link:calculationLink link:definitionLink 9952173 - Disclosure - Concentrations of Credit Risk link:presentationLink link:calculationLink link:definitionLink 9952174 - Disclosure - Commitments and Contingencies link:presentationLink link:calculationLink link:definitionLink 9952175 - Disclosure - Supplementary Data on Cash Flows link:presentationLink link:calculationLink link:definitionLink 9952176 - Disclosure - Subsequent Events link:presentationLink link:calculationLink link:definitionLink 9955511 - Disclosure - Significant Accounting Policies (Policies) link:presentationLink link:calculationLink link:definitionLink 9955512 - Disclosure - Revenue (Tables) link:presentationLink link:calculationLink link:definitionLink 9955513 - Disclosure - Segment Information (Tables) link:presentationLink link:calculationLink link:definitionLink 9955514 - Disclosure - Earnings Per Share (Tables) link:presentationLink link:calculationLink link:definitionLink 9955515 - Disclosure - Fair Value (Tables) link:presentationLink link:calculationLink link:definitionLink 9955516 - Disclosure - Investments (Tables) link:presentationLink link:calculationLink link:definitionLink 9955517 - Disclosure - Fixed Assets (Tables) link:presentationLink link:calculationLink link:definitionLink 9955518 - Disclosure - Postretirement Benefits (Tables) link:presentationLink link:calculationLink link:definitionLink 9955519 - Disclosure - Incentive and Deferred Compensation Plans (Tables) link:presentationLink link:calculationLink link:definitionLink 9955520 - Disclosure - Income Taxes (Tables) link:presentationLink link:calculationLink link:definitionLink 9955521 - Disclosure - Accumulated Other Comprehensive Income (Loss) (Tables) link:presentationLink link:calculationLink link:definitionLink 9955522 - Disclosure - Supplementary Data on Cash Flows (Tables) link:presentationLink link:calculationLink link:definitionLink 9955523 - Disclosure - Nature of Operations (Details) link:presentationLink link:calculationLink link:definitionLink 9955524 - Disclosure - Significant Accounting Polices - Securities Lending (Details) link:presentationLink link:calculationLink link:definitionLink 9955525 - Disclosure - Significant Accounting Policies - Fixed Assets (Details) link:presentationLink link:calculationLink link:definitionLink 9955526 - Disclosure - Significant Accounting Policies - Agent Incentive Compensation Liability (Details) link:presentationLink link:calculationLink link:definitionLink 9955527 - Disclosure - Significant Accounting Policies - Recognition of management fee revenue (Details) link:presentationLink link:calculationLink link:definitionLink 9955527 - Disclosure - Significant Accounting Policies - Recognition of management fee revenue (Details) link:presentationLink link:calculationLink link:definitionLink 9955528 - Disclosure - Significant Accounting Policies - Administrative services (Details) link:presentationLink link:calculationLink link:definitionLink 9955529 - Disclosure - Revenue - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955529 - Disclosure - Revenue - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955530 - Disclosure - Revenue - Disaggregation of Revenue by Performance Obligation (Details) link:presentationLink link:calculationLink link:definitionLink 9955531 - Disclosure - Segment Information - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955532 - Disclosure - Segment Information - Schedule of Segment Reporting Information, by Segment (Details) link:presentationLink link:calculationLink link:definitionLink 9955533 - Disclosure - Earnings Per Share (Details) link:presentationLink link:calculationLink link:definitionLink 9955534 - Disclosure - Fair Value - Fair Value Measurements on a Recurring Basis by Asset Class and Level of Input (Details) link:presentationLink link:calculationLink link:definitionLink 9955535 - Disclosure - Fair Value - Level 3 Assets (Details) link:presentationLink link:calculationLink link:definitionLink 9955536 - Disclosure - Fair Value - Financial Instruments Not Carried at Fair Value (Details) link:presentationLink link:calculationLink link:definitionLink 9955537 - Disclosure - Investments - Cost and Fair Value, Net of Credit Loss Allowance, of Fixed Maturity Securities (Details) link:presentationLink link:calculationLink link:definitionLink 9955538 - Disclosure - Investments - Amortized Cost and Estimated Fair Value, Net of Credit Loss Allowance, of Fixed Maturity Securities by Contractual Maturity (Details) link:presentationLink link:calculationLink link:definitionLink 9955539 - Disclosure - Investments - Available-for-sale Securities in a Gross Unrealized Loss Position by Length of Time (Details) link:presentationLink link:calculationLink link:definitionLink 9955540 - Disclosure - Investments - Allowance for Credit Losses (Details) link:presentationLink link:calculationLink link:definitionLink 9955541 - Disclosure - Investments - Net Investment Income (Loss) (Details) link:presentationLink link:calculationLink link:definitionLink 9955542 - Disclosure - Investments - Net Realized and Unrealized Investment Gains (Losses) (Details) link:presentationLink link:calculationLink link:definitionLink 9955543 - Disclosure - Investments - Portion of Net Unrealized Gains (Losses) Recognized (Details) link:presentationLink link:calculationLink link:definitionLink 9955544 - Disclosure - Investments - Impairments on Investments (Details) link:presentationLink link:calculationLink link:definitionLink 9955545 - Disclosure - Investments - Securities Lending Transactions (Details) link:presentationLink link:calculationLink link:definitionLink 9955546 - Disclosure - Fixed Assets - Fixed Assets by Category (Details) link:presentationLink link:calculationLink link:definitionLink 9955547 - Disclosure - Fixed Assets - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955548 - Disclosure - Bank Line of Credit (Details) link:presentationLink link:calculationLink link:definitionLink 9955549 - Disclosure - Postretirement Benefits - Pension Plan Cost (Income) (Details) link:presentationLink link:calculationLink link:definitionLink 9955550 - Disclosure - Postretirement Benefits - Actuarial Assumptions (Details) link:presentationLink link:calculationLink link:definitionLink 9955551 - Disclosure - Postretirement Benefits - Funding Policy/Funded Status (Details) link:presentationLink link:calculationLink link:definitionLink 9955552 - Disclosure - Postretirement Benefits - Benefit Obligations (Details) link:presentationLink link:calculationLink link:definitionLink 9955553 - Disclosure - Postretirement Benefits - Projected and Accumulated Benefit Obligation (Details) link:presentationLink link:calculationLink link:definitionLink 9955554 - Disclosure - Postretirement Benefits - Plan Assets (Details) link:presentationLink link:calculationLink link:definitionLink 9955555 - Disclosure - Postretirement Benefits - Accumulated Other Comprehensive Loss (Details) link:presentationLink link:calculationLink link:definitionLink 9955556 - Disclosure - Postretirement Benefits - Other Comprehensive Loss (Details) link:presentationLink link:calculationLink link:definitionLink 9955557 - Disclosure - Postretirement Benefits - Asset Allocation (Details) link:presentationLink link:calculationLink link:definitionLink 9955558 - Disclosure - Postretirement Benefits - Fair Value Measurement for Pension Plan Assets by Major Category and Level of Input (Details) link:presentationLink link:calculationLink link:definitionLink 9955559 - Disclosure - Postretirement Benefits - Estimated Future Benefit Payments (Details) link:presentationLink link:calculationLink link:definitionLink 9955560 - Disclosure - Postretirement Benefits - Employee Savings Plan (Details) link:presentationLink link:calculationLink link:definitionLink 9955561 - Disclosure - Incentive and Deferred Compensation Plans - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955562 - Disclosure - Incentive and Deferred Compensation Plans - Fully Vested Plan Awards (Details) link:presentationLink link:calculationLink link:definitionLink 9955563 - Disclosure - Incentive and Deferred Compensation Plans - Total Compensation Cost and Tax Benefit (Details) link:presentationLink link:calculationLink link:definitionLink 9955564 - Disclosure - Incentive and Deferred Compensation Plans - Total Compensation Cost and Share-Based Payment Arrangement (Details) link:presentationLink link:calculationLink link:definitionLink 9955565 - Disclosure - Incentive and Deferred Compensation Plans - Deferred Executive Compensation Liability (Details) link:presentationLink link:calculationLink link:definitionLink 9955566 - Disclosure - Income Taxes - Provision for Income Tax (Details) link:presentationLink link:calculationLink link:definitionLink 9955567 - Disclosure - Income Taxes - Reconciliation of Provision for Income Taxes (Details) link:presentationLink link:calculationLink link:definitionLink 9955568 - Disclosure - Income Taxes - Deferred Tax Assets and Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 9955569 - Disclosure - Income Taxes - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955570 - Disclosure - Capital Stock - Class A and B Common Stock (Details) link:presentationLink link:calculationLink link:definitionLink 9955571 - Disclosure - Capital Stock - Stock Repurchases (Details) link:presentationLink link:calculationLink link:definitionLink 9955572 - Disclosure - Accumulated Other Comprehensive Income (Loss) (Details) link:presentationLink link:calculationLink link:definitionLink 9955573 - Disclosure - Related Party (Details) link:presentationLink link:calculationLink link:definitionLink 9955574 - Disclosure - Concentrations of Credit Risk (Details) link:presentationLink link:calculationLink link:definitionLink 9955575 - Disclosure - Commitments and Contingencies (Details) link:presentationLink link:calculationLink link:definitionLink 9955576 - Disclosure - Supplementary Data on Cash Flows (Details) link:presentationLink link:calculationLink link:definitionLink