0000001 - Document - Cover Page link:presentationLink link:calculationLink link:definitionLink 9952151 - Statement - Condensed Consolidated Statements of Operations (Unaudited) link:presentationLink link:calculationLink link:definitionLink 9952152 - Statement - Condensed Consolidated Statements of Comprehensive Income (Unaudited) link:presentationLink link:calculationLink link:definitionLink 9952153 - Statement - Condensed Consolidated Balance Sheets (Unaudited) link:presentationLink link:calculationLink link:definitionLink 9952154 - Statement - Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 9952155 - Statement - Condensed Consolidated Statements of Cash Flows (Unaudited) link:presentationLink link:calculationLink link:definitionLink 9952155 - Statement - Condensed Consolidated Statements of Cash Flows (Unaudited) link:presentationLink link:calculationLink link:definitionLink 9952156 - Statement - Condensed Consolidated Statements of Shareholders' Equity (Unaudited) link:presentationLink link:calculationLink link:definitionLink 9952157 - Statement - Condensed Consolidated Statements of Shareholders' Equity (Unaudited) (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 9952158 - Disclosure - Significant Accounting Policies link:presentationLink link:calculationLink link:definitionLink 9952159 - Disclosure - Investments link:presentationLink link:calculationLink link:definitionLink 9952160 - Disclosure - Fair Value link:presentationLink link:calculationLink link:definitionLink 9952161 - Disclosure - Insurance Liabilities link:presentationLink link:calculationLink link:definitionLink 9952162 - Disclosure - Shareholders' Equity link:presentationLink link:calculationLink link:definitionLink 9952163 - Disclosure - Other Comprehensive Income (Loss) link:presentationLink link:calculationLink link:definitionLink 9952164 - Disclosure - Earnings Per Share link:presentationLink link:calculationLink link:definitionLink 9952165 - Disclosure - Commitments and Contingencies link:presentationLink link:calculationLink link:definitionLink 9952166 - 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Disclosure - Insurance Liabilities - Components of Change in Health Care Costs Payable (Details) link:presentationLink link:calculationLink link:definitionLink 9955534 - Disclosure - Insurance Liabilities - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955535 - Disclosure - Insurance Liabilities - Interest Rates Used in Measurement of Insurance Liabilities and Durations of Insurance Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 9955536 - Disclosure - Shareholders' Equity - Share Repurchase Programs (Details) link:presentationLink link:calculationLink link:definitionLink 9955537 - Disclosure - Shareholders' Equity - Dividends (Details) link:presentationLink link:calculationLink link:definitionLink 9955538 - Disclosure - Other Comprehensive Income (Loss) (Details) link:presentationLink link:calculationLink link:definitionLink 9955539 - Disclosure - Earnings Per Share (Details) link:presentationLink link:calculationLink link:definitionLink 9955540 - 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