2111100 - Disclosure - Accumulated Other Comprehensive Income
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2411402 - Disclosure - Accumulated Other Comprehensive Income Balances Of Each Component Of Accumulated Other Comprehensive Income, Net Of Tax (Details)
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2411403 - Disclosure - Accumulated Other Comprehensive Income Reclassification Out Of Accumulated Other Comprehensive Income (Details)
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2311301 - Disclosure - Accumulated Other Comprehensive Income (Tables)
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2110100 - Disclosure - Acquisition
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2410402 - Disclosure - Acquisition (Details)
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2410404 - Disclosure - Acquisition Reconciliation Of Total Redeemable Equity (Details)
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2410403 - Disclosure - Acquisition Schedule of Effects of Changes in Parent Ownership Interest (Details)
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2310301 - Disclosure - Acquisition (Tables)
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2101100 - Disclosure - Basis Of Presentation And Significant Accounting Policies
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2201201 - Disclosure - Basis Of Presentation And Significant Accounting Policies (Policy)
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2108100 - Disclosure - Commitments And Contingencies
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2408401 - Disclosure - Commitments And Contingencies (Details)
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1001000 - Statement - Consolidated Balance Sheets
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1001501 - Statement - Consolidated Balance Sheets (Parenthetical)
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1005000 - Statement - Consolidated Statements Of Cash Flows
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1005501 - Statement - Consolidated Statements Of Cash Flows (Parenthetical)
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1003000 - Statement - Consolidated Statements Of Comprehensive Income
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1002000 - Statement - Consolidated Statements Of Income
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1004000 - Statement - Consolidated Statements Of Stockholders' Equity
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0001000 - Document - Document And Entity Information
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2103100 - Disclosure - Earnings Per Common Share And Share Awards
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2403403 - Disclosure - Earnings Per Common Share And Share Awards Computation Of Basic And Diluted Earnings Per Share (Details)
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2403402 - Disclosure - Earnings Per Common Share And Share Awards (Details)
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2403405 - Disclosure - Earnings Per Common Share And Share Awards Share Awards Share-Based Assumptions (Details)
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2403404 - Disclosure - Earnings Per Common Share And Share Awards Summary Of Share-Based Award Transactions (Details)
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2303301 - Disclosure - Earnings Per Common Share And Share Awards (Tables)
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2106100 - Disclosure - Fair Value Measurement
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2406402 - Disclosure - Fair Value Measurement (Details)
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2406403 - Disclosure - Fair Value Measurement Schedule Of Assumptions Used To Determine Fair Value (Details)
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2406405 - Disclosure - Fair Value Measurement Schedule Of Carrying Value And Fair Value Of Financial Assets Disclosed (Details)
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2406407 - Disclosure - Fair Value Measurement Schedule Of Estimated Fair Value Hierarchy Of Investments And Related Impairments Recognized (Details)
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2406406 - Disclosure - Fair Value Measurement Schedule Of Fair Value Assets Measured At Unobservable Inputs Reconciliation (Details)
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2406404 - Disclosure - Fair Value Measurement Schedule Of Fair Value Assets Measured On Recurring Basis (Details)
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2306301 - Disclosure - Fair Value Measurement (Tables)
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2107100 - Disclosure - Investments In Securities
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2407402 - Disclosure - Investments In Securities (Details)
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2407404 - Disclosure - Investments In Securities (Schedule Of Fixed Maturity Securities) (Details)
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2407405 - Disclosure - Investments In Securities (Schedule Of Gross Realized Gains And Losses On Securities) (Details)
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2407403 - Disclosure - Investments In Securities (Schedule Of Gross Unrealized Gains And Losses And Amortized Cost For Securities) (Details)
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2407406 - Disclosure - Investments In Securities (Schedule Of Unrealized Losses On Investments) (Details)
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2307301 - Disclosure - Investments In Securities (Tables)
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2109100 - Disclosure - Related Party Transactions
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2409402 - Disclosure - Related Party Transactions Summary Of Approximate Values By Year Found Within Consolidated Balance Sheets (Details)
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2409403 - Disclosure - Related Party Transactions Summary Of Approximate Values By Year Found Within Consolidated Statements Of Income (Details)
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2309301 - Disclosure - Related Party Transactions (Tables)
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2102100 - Disclosure - Reserves For Claims
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2402403 - Disclosure - Reserves For Claims Summary Of The Company's Loss Reserves (Details)
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2402402 - Disclosure - Reserves For Claims Summary Of Transactions In Reserves For Claims (Details)
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2302301 - Disclosure - Reserves For Claims (Tables)
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2105100 - Disclosure - Retirement Agreements And Other Postretirement Benefits
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2405402 - Disclosure - Retirement Agreements And Other Postretirement Benefits (Details)
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2305301 - Disclosure - Retirement Agreements And Other Postretirement Benefits (Tables)
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2104100 - Disclosure - Segment Information
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2404402 - Disclosure - Segment Information Selected Financial Information By Segment (Details)
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2304301 - Disclosure - Segment Information (Tables)
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