0000001 - Document - Document and Entity Information link:presentationLink link:calculationLink link:definitionLink 9952151 - Statement - CONSOLIDATED BALANCE SHEETS link:presentationLink link:calculationLink link:definitionLink 9952152 - Statement - CONSOLIDATED BALANCE SHEETS (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 9952153 - Statement - CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED) link:presentationLink link:calculationLink link:definitionLink 9952154 - Statement - CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME link:presentationLink link:calculationLink link:definitionLink 9952155 - Statement - STATEMENT OF COMPREHENSIVE INCOME (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 9952156 - Statement - CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY link:presentationLink link:calculationLink link:definitionLink 9952157 - Statement - CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 9952158 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) link:presentationLink link:calculationLink link:definitionLink 9952159 - Disclosure - Basis of Presentation link:presentationLink link:calculationLink link:definitionLink 9952160 - Disclosure - Accounting Developments link:presentationLink link:calculationLink link:definitionLink 9952161 - Disclosure - Fair Values of Financial Instruments link:presentationLink link:calculationLink link:definitionLink 9952162 - Disclosure - Investments link:presentationLink link:calculationLink link:definitionLink 9952163 - Disclosure - Derivative Financial Instruments link:presentationLink link:calculationLink link:definitionLink 9952164 - Disclosure - Accumulated Other Comprehensive Income (Loss) link:presentationLink link:calculationLink link:definitionLink 9952165 - Disclosure - Liability for Future Policy Benefits, Policyholder's Account Balances, and Deferred Acquisition Costs link:presentationLink link:calculationLink link:definitionLink 9952166 - Disclosure - Segment Information link:presentationLink link:calculationLink link:definitionLink 9952167 - Disclosure - Employee Benefit Plans link:presentationLink link:calculationLink link:definitionLink 9952168 - Disclosure - Stockholders' Equity and Earnings Per Common Share link:presentationLink link:calculationLink link:definitionLink 9952169 - Disclosure - Commitments and Contingent Liabilities link:presentationLink link:calculationLink link:definitionLink 9952170 - Disclosure - Other link:presentationLink link:calculationLink link:definitionLink 9955511 - Disclosure - Basis of Presentation (Policies) link:presentationLink link:calculationLink link:definitionLink 9955512 - Disclosure - Fair Values of Financial Instruments (Tables) link:presentationLink link:calculationLink link:definitionLink 9955513 - Disclosure - Investments (Tables) link:presentationLink link:calculationLink link:definitionLink 9955514 - Disclosure - Derivative Financial Instruments (Tables) link:presentationLink link:calculationLink link:definitionLink 9955515 - Disclosure - Accumulated Other Comprehensive Income (Loss) (Tables) link:presentationLink link:calculationLink link:definitionLink 9955516 - Disclosure - Liability for Future Policy Benefits, Policyholder's Account Balances, and Deferred Acquisition Costs (Tables) link:presentationLink link:calculationLink link:definitionLink 9955517 - Disclosure - Segment Information (Tables) link:presentationLink link:calculationLink link:definitionLink 9955518 - Disclosure - Employee Benefit Plans (Tables) link:presentationLink link:calculationLink link:definitionLink 9955519 - Disclosure - Stockholders' Equity and Earnings Per Common Share (Tables) link:presentationLink link:calculationLink link:definitionLink 9955520 - Disclosure - Fair Values of Financial Instruments Private Equity Partnerships (Details) link:presentationLink link:calculationLink link:definitionLink 9955521 - Disclosure - Fair Value Measurements by Input Level (Detail) link:presentationLink link:calculationLink link:definitionLink 9955522 - Disclosure - Changes in Assets and Liabilities Measured at Fair Value on a Recurring Basis using Significant Unobservable Inputs (Level 3) (Detail) link:presentationLink link:calculationLink link:definitionLink 9955523 - Disclosure - Quantitative Information Regarding Significant Unobservable Inputs (Details) link:presentationLink link:calculationLink link:definitionLink 9955524 - Disclosure - Fair Values of Financial Instruments Carrying Amounts and Estimated Fair value of Financial Instruments Not Measured at Fair Value (Details) link:presentationLink link:calculationLink link:definitionLink 9955525 - Disclosure - Fair Value of Financial Instruments Additional Information (Detail) link:presentationLink link:calculationLink link:definitionLink 9955526 - Disclosure - Amortized Cost and Fair Values of Securities by Security Type (Detail) link:presentationLink link:calculationLink link:definitionLink 9955527 - Disclosure - Length of Time Fixed Maturity Securities had been in a Gross Unrealized Loss Position (Detail) link:presentationLink link:calculationLink link:definitionLink 9955528 - Disclosure - Investments Distribution of the Maturity Dates for Fixed Maturity Securities (Details) link:presentationLink link:calculationLink link:definitionLink 9955529 - Disclosure - Investments Distribution by External Credit Rating for Fixed Maturity Securities (Details) link:presentationLink link:calculationLink link:definitionLink 9955530 - Disclosure - Debt Securities, Available-for-sale, Allowance for Credit Losses Rollforward (Details) link:presentationLink link:calculationLink link:definitionLink 9955531 - Disclosure - Mortgage Loans by Property Type and Geographic Region (Detail) link:presentationLink link:calculationLink link:definitionLink 9955532 - Disclosure - Schedule of Participating Mortgage Loans by Internal Credit Rating and Loan to Value (Details) link:presentationLink link:calculationLink link:definitionLink 9955533 - Disclosure - Mortgage Loans, Sorted by Applicable Credit Quality Indicators (Detail) link:presentationLink link:calculationLink link:definitionLink 9955534 - Disclosure - Mortgage Loans, Allowance for Credit Losses Rollforward (Details) link:presentationLink link:calculationLink link:definitionLink 9955535 - Disclosure - Investments Remaining Contractual Maturity of Secruity Lending Agreements (Details) link:presentationLink link:calculationLink link:definitionLink 9955536 - Disclosure - Investments Federal Home Loan Bank Carrying Amount, Collateral Posted and Advances Received (Details) link:presentationLink link:calculationLink link:definitionLink 9955537 - Disclosure - Investments Schedule of Financial Instrument and Derivative Offsetting (Details) link:presentationLink link:calculationLink link:definitionLink 9955538 - Disclosure - Investments Investment Income (Detail) link:presentationLink link:calculationLink link:definitionLink 9955539 - Disclosure - Investment Gains and Losses Reported in Consolidated Statements of Income (Detail) link:presentationLink link:calculationLink link:definitionLink 9955540 - Disclosure - Investments - Additional Information (Detail) link:presentationLink link:calculationLink link:definitionLink 9955541 - Disclosure - Derivative Financial Instruments Nature and Amount of Collateral Received From and Posted To Our Derivative Counterparties (Details) link:presentationLink link:calculationLink link:definitionLink 9955542 - Disclosure - Derivative Financial Instruments Fair Value Hedges Carrying Amount of Hedged Assets and Liabilities and Cumulative Basis Adjustments (Details) link:presentationLink link:calculationLink link:definitionLink 9955543 - Disclosure - Location and Fair Values of Derivative Financial Instruments (Detail) link:presentationLink link:calculationLink link:definitionLink 9955544 - Disclosure - Derivative Financial Instruments Location of Gains and Losses Designated as Hedging Instruments, Consolidated Statements of Income (Details) link:presentationLink link:calculationLink link:definitionLink 9955545 - Disclosure - Location of Gains and Losses on Derivative Instruments Designated as Cash Flow Hedging Instruments (Detail) link:presentationLink link:calculationLink link:definitionLink 9955546 - Disclosure - Gains and Losses on Derivatives Not Designated as Hedging Instruments (Detail) link:presentationLink link:calculationLink link:definitionLink 9955547 - Disclosure - Derivative Financial Instruments - Additional Information (Detail) link:presentationLink link:calculationLink link:definitionLink 9955548 - Disclosure - Schedule of Accumulated Other Comprehensive Income (Loss) (Details) link:presentationLink link:calculationLink link:definitionLink 9955549 - Disclosure - Schedule of Reclassifications Out of Accumulated Other Comprehensive Income (Details) link:presentationLink link:calculationLink link:definitionLink 9955550 - Disclosure - Liability for Future Policy Benefit Activity (Details) link:presentationLink link:calculationLink link:definitionLink 9955551 - Disclosure - Policyholder Account Balance (Details) link:presentationLink link:calculationLink link:definitionLink 9955552 - Disclosure - Policyholder Account Balance, Guaranteed Minimum Crediting (Details) link:presentationLink link:calculationLink link:definitionLink 9955553 - Disclosure - Deferred Policy Acquisition Costs (Details) link:presentationLink link:calculationLink link:definitionLink 9955554 - Disclosure - Premium Income by Major Line of Business within Each Segment (Detail) link:presentationLink link:calculationLink link:definitionLink 9955555 - Disclosure - Selected Operating Statement Data by Segment (Detail) link:presentationLink link:calculationLink link:definitionLink 9955556 - Disclosure - Assets by Segment (Detail) link:presentationLink link:calculationLink link:definitionLink 9955557 - Disclosure - Reconciliation of Total Revenue and Income Before Income Tax to Operating Revenue and Operating Income (Detail) link:presentationLink link:calculationLink link:definitionLink 9955558 - Disclosure - Segment Information Segments - Additional Information (Detail) link:presentationLink link:calculationLink link:definitionLink 9955559 - Disclosure - Employee Benefit Plans Net Periodic Benefit Cost (Detail) link:presentationLink link:calculationLink link:definitionLink 9955560 - Disclosure - Basic and Diluted Earnings Per Share (Detail) link:presentationLink link:calculationLink link:definitionLink 9955561 - Disclosure - Treasury Stock Transactions (Details) link:presentationLink link:calculationLink link:definitionLink 9955562 - Disclosure - Stockholders' Equity and Earnings Per Common Share - Additional Information (Detail) link:presentationLink link:calculationLink link:definitionLink 9955563 - Disclosure - Debt - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955564 - Disclosure - Allowance for Expected Credit Losses on Premiums Receivable (Details) link:presentationLink link:calculationLink link:definitionLink 9955565 - Disclosure - Reinsurance (Details) link:presentationLink link:calculationLink link:definitionLink