00100 - Statement - Consolidated Balance Sheets link:presentationLink link:calculationLink link:definitionLink 00200 - Statement - Consolidated Statements Of Operations link:presentationLink link:calculationLink link:definitionLink 00300 - Statement - Consolidated Statement Of Comprehensive Income link:presentationLink link:calculationLink link:definitionLink 00500 - Statement - Consolidated Statement Of Cash Flows link:presentationLink link:calculationLink link:definitionLink 40403 - Disclosure - Investments (Amortized Cost And Fair Value Of Fixed Maturity Securities By Contractual Maturity) (Details) link:presentationLink link:calculationLink link:definitionLink 40408 - Disclosure - Investments (Credit Quality Indicators For Commercial Mortgage Loans) (Details) link:presentationLink link:calculationLink link:definitionLink 41102 - Disclosure - Retirement And Other Employee Benefits (Components Of Net Periodic Benefit Cost) (Details) link:presentationLink link:calculationLink link:definitionLink 41201 - Disclosure - Segment Information (Financial Information By Segment) (Details) link:presentationLink link:calculationLink link:definitionLink 00090 - Document - Document And Entity Information link:presentationLink link:calculationLink link:definitionLink 00105 - Statement - Consolidated Balance Sheets (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 00305 - Statement - Consolidated Statement Of Comprehensive Income (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 00400 - Statement - Consolidated Statements Of Stockholders' Equity link:presentationLink link:calculationLink link:definitionLink 10101 - Disclosure - Nature Of Operations link:presentationLink link:calculationLink link:definitionLink 10201 - Disclosure - Basis of Presentation link:presentationLink link:calculationLink link:definitionLink 10301 - Disclosure - Recent Accounting Pronouncements link:presentationLink link:calculationLink link:definitionLink 10401 - Disclosure - Investments link:presentationLink link:calculationLink link:definitionLink 10501 - Disclosure - Fair Value Disclosures link:presentationLink link:calculationLink link:definitionLink 10601 - Disclosure - Debt link:presentationLink link:calculationLink link:definitionLink 10701 - Disclosure - Accumulated Other Comprehensive Income link:presentationLink link:calculationLink link:definitionLink 10801 - Disclosure - Stock Based Compensation link:presentationLink link:calculationLink link:definitionLink 10901 - Disclosure - Stock Repurchase link:presentationLink link:calculationLink link:definitionLink 11001 - Disclosure - Earnings Per Common Share link:presentationLink link:calculationLink link:definitionLink 11101 - Disclosure - Retirement And Other Employee Benefits link:presentationLink link:calculationLink link:definitionLink 11201 - Disclosure - Segment Information link:presentationLink link:calculationLink link:definitionLink 11301 - Disclosure - Commitments And Contingencies link:presentationLink link:calculationLink link:definitionLink 11401 - Disclosure - Catastrophe Bond Program link:presentationLink link:calculationLink link:definitionLink 30303 - Disclosure - Recent Accounting Pronouncements (Tables) link:presentationLink link:calculationLink link:definitionLink 30403 - Disclosure - Investments (Tables) link:presentationLink link:calculationLink link:definitionLink 30503 - Disclosure - Fair Value Disclosures (Tables) link:presentationLink link:calculationLink link:definitionLink 30903 - Disclosure - Stock Repurchase (Tables) link:presentationLink link:calculationLink link:definitionLink 31003 - Disclosure - Earnings Per Common Share (Tables) link:presentationLink link:calculationLink link:definitionLink 31103 - Disclosure - Retirement And Other Employee Benefits (Tables) link:presentationLink link:calculationLink link:definitionLink 31203 - Disclosure - Segment Information (Tables) link:presentationLink link:calculationLink link:definitionLink 40201 - Disclosure - Basis of Presentation (Details) link:presentationLink link:calculationLink link:definitionLink 40301 - Disclosure - Recent Accounting Pronouncements (Effect of Adoption on Consolidated Balance Sheet) (Details) link:presentationLink link:calculationLink link:definitionLink 40302 - Disclosure - Recent Accounting Pronouncements (Effect of Adoption on Consolidated Statement of Operations) (Details) link:presentationLink link:calculationLink link:definitionLink 40401 - Disclosure - Investments (Narrative) (Details) link:presentationLink link:calculationLink link:definitionLink 40402 - Disclosure - Investments (Amortized Cost, Gross Unrealized Gains And Losses, Fair Value And OTTI) (Details) link:presentationLink link:calculationLink link:definitionLink 40404 - Disclosure - Investments (Proceeds From Sales Of Available-For-Sale Securities And The Gross Realized Gains And Gross Realized Losses) (Details) link:presentationLink link:calculationLink link:definitionLink 40405 - Disclosure - Investments (Net Realized Gains (Losses), Including Other-Than-Temporary Impairments) (Details) link:presentationLink link:calculationLink link:definitionLink 40406 - Disclosure - Investments (Credit Loss Impairments Recognized) (Details) link:presentationLink link:calculationLink link:definitionLink 40407 - Disclosure - Investments (Duration Of Gross Unrealized Losses On Fixed Maturity Securites And Equity Securities) (Details) link:presentationLink link:calculationLink link:definitionLink 40501 - Disclosure - Fair Value Disclosures (Narrative) (Details) link:presentationLink link:calculationLink link:definitionLink 40502 - Disclosure - Fair Value Disclosures (Fair Value For Assets And Liabilities Measured At Fair Value On A Recurring Basis) (Details) link:presentationLink link:calculationLink link:definitionLink 40503 - Disclosure - Fair Value Disclosures (Change In Balance Sheet Carrying Value Associated With Level 3 Financial Assets Carried At Fair Value) (Details) link:presentationLink link:calculationLink link:definitionLink 40506 - Disclosure - Fair Value Disclosures (Carrying Value And Fair Value Of The Financial Instruments That Are Not Recognized Or Are Not Carried At Fair Value) (Details) link:presentationLink link:calculationLink link:definitionLink 40507 - Disclosure - Fair Value Disclosures (Schedule Of Allowance For Doubtful Accounts For Reinsurance Recoverable) (Details) link:presentationLink link:calculationLink link:definitionLink 40601 - Disclosure - Debt (Details) link:presentationLink link:calculationLink link:definitionLink 40701 - Disclosure - Accumulated Other Comprehensive Income (Narrative) (Details) link:presentationLink link:calculationLink link:definitionLink 40801 - Disclosure - Stock Based Compensation (Narrative) (Details) link:presentationLink link:calculationLink link:definitionLink 40901 - Disclosure - Stock Repurchase (Narrative) (Details) link:presentationLink link:calculationLink link:definitionLink 40902 - Disclosure - Stock Repurchase (Shares Repurchased) (Details) link:presentationLink link:calculationLink link:definitionLink 41001 - Disclosure - Earnings Per Common Share (Narrative) (Details) link:presentationLink link:calculationLink link:definitionLink 41002 - Disclosure - Earnings Per Common Share (Net Income, Weighted Average Common Shares Used In Calculating Basic Earnings Per Common Share And Diluted EPS) (Details) link:presentationLink link:calculationLink link:definitionLink 41101 - Disclosure - Retirement And Other Employee Benefits (Narrative) (Details) link:presentationLink link:calculationLink link:definitionLink 41301 - Disclosure - Commitments And Contingencies (Narrative) (Details) link:presentationLink link:calculationLink link:definitionLink 41401 - Disclosure - Catastrophe Bond Program (Details) link:presentationLink link:calculationLink link:definitionLink