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 Earnings link:presentationLink link:calculationLink link:definitionLink 9952154 - Statement - Consolidated Statements of Comprehensive Earnings link:presentationLink link:calculationLink link:definitionLink 9952155 - Statement - Consolidated Statements of Comprehensive Earnings (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 9952156 - Statement - Consolidated Statements of Cash Flows link:presentationLink link:calculationLink link:definitionLink 9952156 - Statement - Consolidated Statements of Cash Flows link:presentationLink link:calculationLink link:definitionLink 9952157 - Statement - Consolidated Statements of Stockholders' Equity link:presentationLink link:calculationLink link:definitionLink 9952158 - Statement - Consolidated Statements of Stockholders' Equity (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 9952159 - Disclosure - Summary of Significant Accounting Policies link:presentationLink link:calculationLink link:definitionLink 9952160 - Disclosure - Fair Value of Financial Instruments (Notes) link:presentationLink link:calculationLink link:definitionLink 9952161 - Disclosure - Investments (Notes) link:presentationLink link:calculationLink link:definitionLink 9952162 - Disclosure - Lessee, Leases (Notes) link:presentationLink link:calculationLink link:definitionLink 9952163 - Disclosure - Lessor, Leases (Notes) link:presentationLink link:calculationLink link:definitionLink 9952164 - Disclosure - Self-Insurance Reserves (Notes) link:presentationLink link:calculationLink link:definitionLink 9952165 - Disclosure - Retirement Plans (Notes) link:presentationLink link:calculationLink link:definitionLink 9952166 - Disclosure - Income Taxes (Notes) link:presentationLink link:calculationLink link:definitionLink 9952167 - Disclosure - Accumulated Other Comprehensive Earnings (Losses) (Notes) link:presentationLink link:calculationLink link:definitionLink 9952168 - Disclosure - Segment Reporting link:presentationLink link:calculationLink link:definitionLink 9952169 - Disclosure - Commitments and Contingencies (Notes) link:presentationLink link:calculationLink link:definitionLink 9952170 - Disclosure - Subsequent Event (Notes) link:presentationLink link:calculationLink link:definitionLink 9955511 - Disclosure - Summary of Significant Accounting Policies (Policies) link:presentationLink link:calculationLink link:definitionLink 9955512 - Disclosure - Fair Value of Financial Instruments (Tables) link:presentationLink link:calculationLink link:definitionLink 9955513 - Disclosure - Investments (Tables) link:presentationLink link:calculationLink link:definitionLink 9955514 - Disclosure - Lessee, Leases (Tables) link:presentationLink link:calculationLink link:definitionLink 9955515 - Disclosure - Lessor, Operating Leases (Tables) link:presentationLink link:calculationLink link:definitionLink 9955516 - Disclosure - Self-Insurance Reserves (Tables) link:presentationLink link:calculationLink link:definitionLink 9955517 - Disclosure - Income Taxes (Tables) link:presentationLink link:calculationLink link:definitionLink 9955518 - Disclosure - Accumulated Other Comprehensive Earnings (Losses) (Tables) link:presentationLink link:calculationLink link:definitionLink 9955519 - Disclosure - Segment Reporting (Tables) link:presentationLink link:calculationLink link:definitionLink 9955520 - Disclosure - Summary of Significant Accounting Policies - Additional Information (Detail) link:presentationLink link:calculationLink link:definitionLink 9955521 - Disclosure - Assets Recorded at Cost and Depreciated Using Straight-Line Method Over Estimated Useful Lives or Terms of Related Leases, If Shorter (Detail) link:presentationLink link:calculationLink link:definitionLink 9955522 - Disclosure - Summary of Fair Value Measurements for Available for Sale Securities (Detail) link:presentationLink link:calculationLink link:definitionLink 9955523 - Disclosure - Available for Sale Debt Securities (Details) link:presentationLink link:calculationLink link:definitionLink 9955524 - Disclosure - Amortized Cost and Fair Value of Available for Sale Debt Securities by Expected Maturity (Details) link:presentationLink link:calculationLink link:definitionLink 9955525 - Disclosure - Investments Investments Allowance for Credit Losses (Details) link:presentationLink link:calculationLink link:definitionLink 9955526 - Disclosure - Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value (Details) link:presentationLink link:calculationLink link:definitionLink 9955527 - Disclosure - Investments - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955528 - Disclosure - Investments Investments Equity Securities (Details) link:presentationLink link:calculationLink link:definitionLink 9955529 - Disclosure - Investments Investment Income (Details) link:presentationLink link:calculationLink link:definitionLink 9955530 - Disclosure - Lessee, Leases Lease Cost ASC 842 (Details) link:presentationLink link:calculationLink link:definitionLink 9955531 - Disclosure - Lessee, Leases Maturities of Operating Lease Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 9955532 - Disclosure - Lessee, Leases Maturities of Finance Lease Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 9955533 - Disclosure - Lessee, Leases, Not Yet Commenced (Details) link:presentationLink link:calculationLink link:definitionLink 9955534 - Disclosure - Lessor, Operating Leases, Lease Income ASC 842 (Details) link:presentationLink link:calculationLink link:definitionLink 9955535 - Disclosure - Lessor, Fixed Lease Payments to be Received (Details) link:presentationLink link:calculationLink link:definitionLink 9955536 - Disclosure - Self-Insurance Reserves (Detail) link:presentationLink link:calculationLink link:definitionLink 9955537 - Disclosure - Retirement Plans - Additional Information (Detail) link:presentationLink link:calculationLink link:definitionLink 9955538 - Disclosure - Total Income Taxes (Detail) link:presentationLink link:calculationLink link:definitionLink 9955539 - Disclosure - Provision for Income Taxes (Detail) link:presentationLink link:calculationLink link:definitionLink 9955539 - Disclosure - Provision for Income Taxes (Detail) link:presentationLink link:calculationLink link:definitionLink 9955540 - Disclosure - Income Taxes - Additional Information (Detail) link:presentationLink link:calculationLink link:definitionLink 9955541 - Disclosure - Reconciliation of Provision for Income Taxes at Federal Statutory Tax Rate to Earnings Before Income Taxes (Detail) link:presentationLink link:calculationLink link:definitionLink 9955542 - Disclosure - Income Taxes Paid (Detail) link:presentationLink link:calculationLink link:definitionLink 9955543 - Disclosure - Tax Effect of Temporary Differences That Give Rise to Deferred Income Taxes (Detail) link:presentationLink link:calculationLink link:definitionLink 9955544 - Disclosure - Accumulated Other Comprehensive Earnings (Losses) (Details) link:presentationLink link:calculationLink link:definitionLink 9955545 - Disclosure - Segment Reporting (Details) link:presentationLink link:calculationLink link:definitionLink 9955546 - Disclosure - Subsequent Event (Details) link:presentationLink link:calculationLink link:definitionLink