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Cover
Document and Entity Information
Financial Statements
Consolidated Balance Sheets
Consolidated Balance Sheets (Parenthetical)
Consolidated Statements of Income
Consolidated Statements of Comprehensive Income
Consolidated Statements of Equity
Consolidated Statements of Cash Flows
Notes to Financial Statements
Summary of Significant Accounting Policies
Acquisitions/Divestiture
Investments
Fair Value
Derivative Financial Instruments
Receivables
Property, Plant and Equipment
Goodwill
Claim and Claim Adjustment Expense Reserves
Leases
Income Taxes
Debt
Shareholders' Equity
Statutory Accounting Practices
Supplemental Natural Gas and Oil Information
Benefit Plans
Reinsurance
Quarterly Financial Data
Legal Proceedings
Commitments and Contingencies
Business Segments
Consolidating Financial Information
Subsequent Event
Schedule I - Condensed Financial Information of Registrant
Schedule II - Valuation and Qualifying Accounts
Schedule V - Supplemental Information Concerning Property and Casualty Insurance Operations
Accounting Policies
Summary of Significant Accounting Policies (Policies)
Notes Tables
Summary of Significant Accounting Policies (Tables)
Investments (Tables)
Fair Value (Tables)
Derivative Financial Instruments (Tables)
Receivables (Tables)
Property, Plant and Equipment (Tables)
Goodwill (Tables)
Claim and Claim Adjustment Expense Reserves (Tables)
Leases (Tables)
Income Taxes (Tables)
Debt (Tables)
Shareholders' Equity (Tables)
Statutory Accounting Practices (Tables)
Supplemental Natural Gas and Oil Information (Tables)
Benefit Plans (Tables)
Reinsurance (Tables)
Quarterly Financial Data (Tables)
Business Segments (Tables)
Consolidating Financial Information (Tables)
Notes Details
Summary of Significant Accounting Policies - Additional Information (Detail)
Summary of Significant Accounting Policies - Summary of Financial Information for Joint Ventures (Detail)
Summary of Significant Accounting Policies - Schedule of Life Settlement Contracts Fair Value Method (Detail)
Summary of Significant Accounting Policies - Principal Service Lives (Detail)
Acquisitions/Divestiture - Additional Information (Detail)
Investments - Net Investment Income and Investment Gains (Losses) (Detail)
Investments - Net Investment Income and Investment Gains (Losses) (Parenthetical) (Detail)
Investments - Additional Information (Detail)
Investments - Schedule of Net Change in Unrealized Gains (Losses) Securities Available-for-Sale (Detail)
Investments - Components of OTTI Losses Recognized in Earnings by Asset Type (Detail)
Investments - Amortized Cost and Fair Values of Securities (Detail)
Investments - Securities Available-for-Sale in Gross Unrealized Loss Position (Detail)
Investments - Pretax Fixed Maturity Credit Loss Component Reflected within Retained Earnings (Detail)
Investments - Available-for-Sale Fixed Maturity Securities by Contractual Maturity (Detail)
Fair Value - Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail)
Fair Value - Assets and Liabilities Measured at Fair Value on Recurring Basis Using Significant Unobservable Inputs (Detail)
Fair Value - Additional Information (Detail)
Fair Value - Quantitative Information about Significant Unobservable Inputs Utilized by Company Fair Value Measurements of Level 3 Assets (Detail)
Fair Value - Carrying Amount and Estimated Fair Value of Financial Instrument Assets and Liabilities Not Measured at Fair Value (Detail)
Derivative Financial Instruments - Summary of Aggregate Contractual or Notional Amounts and Gross Estimated Fair Values Related to Derivative Financial Instruments (Detail)
Derivative Financial Instruments - Additional Information (Detail)
Receivables - Receivables (Detail)
Property, Plant and Equipment - Components of Property, Plant and Equipment (Detail)
Property, Plant and Equipment - Components of Property, Plant and Equipment (Parenthetical) (Detail)
Property, Plant and Equipment - DD&A Expense and Capital Expenditures (Detail)
Property, Plant and Equipment - Additional Information (Detail)
Property, Plant and Equipment - Natural Gas and Oil Property and Equipment Costs Not Being Amortized (Detail)
Goodwill - Schedule of Changes in Goodwill (Detail)
Goodwill - Additional Information (Detail)
Claim and Claim Adjustment Expense Reserves - Additional Information (Detail)
Claim and Claim Adjustment Expense Reserves - Reconciliation of Claim and Claim Adjustment Expense Reserves (Detail)
Claim and Claim Adjustment Expense Reserves - Changes in Provision for Insured Events of Prior Years (Detail)
Claim and Claim Adjustment Expense Reserves - Summary of Gross and Net Carried Reserves (Detail)
Claim and Claim Adjustment Expense Reserves - Net Prior Year Development (Detail)
Claim and Claim Adjustment Expense Reserves - Net Prior Year Claim and Allocated Claim Adjustment Expense Reserve Development (Detail)
Claim and Claim Adjustment Expense Reserves - Impact of Loss Portfolio Transfer on Consolidated Statements of Income (Detail)
Leases - Additional Information (Detail)
Leases - Future Minimum Lease Payments to be Made Under Non-Cancelable Operating Leases Along with Lease and Sublease Minimum Receipts to be Received on Owned and Leased Properties (Detail)
Income Taxes - Additional Information (Detail)
Income Taxes - Current and Deferred Components of Income Tax Expense (Benefit) (Detail)
Income Taxes - Components of U.S. and Foreign Income and Reconciliation Between Federal Income Tax Expense at Statutory Rates and Actual Income Tax Expense (Detail)
Income Taxes - Reconciliation of Beginning and Ending Amount of Unrecognized Tax Benefits, Excluding Tax Carryforwards and Interest and Penalties (Detail)
Income Taxes - Summary of Deferred Tax Assets and Liabilities (Detail)
Income Taxes - Summary of Deferred Tax Assets and Liabilities (Parenthetical) (Detail)
Debt - Schedule of Long-Term Debt Instruments (Detail)
Debt - Schedule of Long-Term Debt Instruments (Parenthetical) (Detail)
Debt - Schedule of Debt by Subsidiary (Detail)
Debt - Additional Information (Detail)
Shareholders' Equity - Components of Accumulated Other Comprehensive Income (Detail)
Shareholders' Equity - Components of Accumulated Other Comprehensive Income (Parenthetical) (Detail)
Shareholders' Equity - Additional Information (Detail)
Statutory Accounting Practices - Additional Information (Detail)
Statutory Accounting Practices - Combined Statutory Capital and Surplus and Net Income (Loss) (Detail)
Supplemental Natural Gas and Oil Information - Estimated Net Quantities of Proved Natural Gas and Oil Reserves (Detail)
Supplemental Natural Gas and Oil Information - Estimated Net Quantities of Proved Natural Gas and Oil Reserves (Parenthetical) (Detail)
Supplemental Natural Gas and Oil Information - Aggregate Amounts of Costs Capitalized for Natural Gas and Oil Producing Activities (Detail)
Supplemental Natural Gas and Oil Information - Costs Incurred in Natural Gas and Oil Producing Activities (Detail)
Supplemental Natural Gas and Oil Information - Costs Incurred in Natural Gas and Oil Producing Activities (Parenthetical) (Detail)
Supplemental Natural Gas and Oil Information - Standardized Measure of Discounted Future Net Cash Flows Relating to Proved Natural Gas and Oil Reserve Quantities (Detail)
Supplemental Natural Gas and Oil Information - Standardized Measure of Discounted Future Net Cash Flows Relating to Proved Natural Gas and Oil Reserve Quantities (Parenthetical) (Detail)
Supplemental Natural Gas and Oil Information - Additional Information (Detail)
Supplemental Natural Gas and Oil Information - Changes Between Total Standardized Measure of Discounted Future Net Cash Flows (Detail)
Benefit Plans - Weighted Average Assumptions Used to Determine Benefit Obligations (Detail)
Benefit Plans - Weighted Average Assumptions Used to Determine Net Periodic Benefit Cost (Detail)
Benefit Plans - Assumed Health Care Cost Trend Rates (Detail)
Benefit Plans - Additional Information (Detail)
Benefit Plans - Components of Net Periodic Benefit Cost (Detail)
Benefit Plans - Reconciliation of Benefit Obligations and Plan Assets (Detail)
Benefit Plans - Amounts Recognized in Accumulated Other Comprehensive Income (loss) Not Yet Recognized in Net Periodic (Benefit) Cost (Detail)
Benefit Plans - Estimated Amounts to Be Recognized from Accumulated Other Comprehensive Income into Net Periodic Cost (Benefit) (Detail)
Benefit Plans - Estimated Future Minimum Benefit Payments (Detail)
Benefit Plans - Pension Plan Assets Measured at Fair Value on Recurring Basis (Detail)
Benefit Plans - Plan Assets Measured at Fair Value on Recurring Basis Using Significant Unobservable Inputs (Level 3) (Detail)
Benefit Plans - Other Postretirement Benefit Plan Assets Measured at Fair Value on Recurring Basis (Detail)
Benefit Plans - Summary of Stock Option and SAR Transactions (Detail)
Benefit Plans - Summary of Stock Options and SARs Outstanding by Exercise Price Range (Detail)
Benefit Plans - Assumptions Used in Estimating Fair Value of Granted Options and SARs and Results (Detail)
Reinsurance - Summary of Amounts Receivable from Reinsurers (Detail)
Reinsurance - Additional Information (Detail)
Reinsurance - Summary of Effects of Reinsurance on Earned Premiums (Detail)
Reinsurance - Summary of Impact of Reinsurance on Life Insurance Inforce (Detail)
Quarterly Financial Data - Schedule of Quarterly Financial Information (Detail)
Quarterly Financial Data - Schedule of Quarterly Financial Information (Parenthetical) (Detail)
Commitments and Contingencies - Additional Information (Detail)
Business Segments - Additional Information (Detail)
Business Segments - Consolidated Revenues and Income (Loss) by Business Segment (Detail)
Consolidating Financial Information - Consolidating Balance Sheet Information (Detail)
Consolidating Financial Information - Consolidating Statement of Income Information (Detail)
Subsequent Event - Additional Information (Detail)
Schedule I - Condensed Financial Information of Registrant - Parent Company Only, Balance Sheets (Detail)
Schedule I - Condensed Financial Information of Registrant - Parent Company Only, Statement of Income and Comprehensive Income (Detail)
Schedule I - Condensed Financial Information of Registrant - Parent Company Only, Statement of Cash Flows (Detail)
Schedule I - Condensed Financial Information of Registrant - Parent Company Only, Statement of Cash Flows (Parenthetical) (Detail)
Schedule II - Valuation and Qualifying Accounts (Detail)
Schedule V - Supplemental Information Concerning Property and Casualty Insurance Operations (Detail)
Schedule V - Supplemental Information Concerning Property and Casualty Insurance Operations (Parenthetical) (Detail)
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