2103100 - Disclosure - Accounting Pronouncements
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2403402 - Disclosure - Accounting Pronouncements Benefit Plans, Other Components of Net Benefit Cost (Details)
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2403401 - Disclosure - Accounting Pronouncements Future Minimum Payments Due on Operating Leases (Details)
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2116100 - Disclosure - Accounts Payable and Other Current Liabilities
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2416402 - Disclosure - Accounts Payable and Other Current Liabilities (Details)
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2316301 - Disclosure - Accounts Payable and Other Current Liabilities (Tables)
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2110100 - Disclosure - Accounts Receivable, Net
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2410401 - Disclosure - Accounts Receivable, Net (Details)
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2124100 - Disclosure - Accumulated Other Comprehensive Income
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2424402 - Disclosure - Accumulated Other Comprehensive Income AOCI by Component (Details)
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2424403 - Disclosure - Accumulated Other Comprehensive Income Reclassifications out of AOCI (Details)
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2324301 - Disclosure - Accumulated Other Comprehensive Loss (Tables)
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2119100 - Disclosure - Commitments and Contingencies
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2419405 - Disclosure - Commitments and Contingencies Environmental (Details)
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2419402 - Disclosure - Commitments and Contingencies Future Minimum Lease Payments (Details)
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2419404 - Disclosure - Commitments and Contingencies Insurance (Details)
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2419403 - Disclosure - Commitments and Contingencies Personal Injury (Details)
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2319301 - Disclosure - Commitments and Contingencies (Tables)
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2101100 - Disclosure - The Company
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2401401 - Disclosure - The Company (Details)
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1003000 - Statement - Consolidated Balance Sheets
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1003501 - Statement - Consolidated Balance Sheets (Unaudited) (Parenthetical)
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1004000 - Statement - Consolidated Statements of Cash Flows
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1005000 - Statement - Consolidated Statements of Changes in Stockholder's Equity
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1002000 - Statement - Consolidated Statements of Comprehensive Income
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1002501 - Statement - Consolidated Statements of Comprehensive Income (Unaudited) (Parenthetical)
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1001000 - Statement - Consolidated Statements of Income
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2117100 - Disclosure - Debt
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2417405 - Disclosure - Debt Capital Leases (Details)
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2417403 - Disclosure - Debt Debt Obligation Maturities (Details)
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2417402 - Disclosure - Debt Debt Outstanding (Details)
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2417404 - Disclosure - Debt Equipment Obligation (Details)
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2417406 - Disclosure - Debt Guarantees (Details)
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2317301 - Disclosure - Debt (Tables)
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0001000 - Document - Document and Entity Information
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2120100 - Disclosure - Employment Benefit Plans
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2420406 - Disclosure - Employment Benefit Plans AOCI (Details)
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2420407 - Disclosure - Employment Benefit Plans Assumptions Used (Details)
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2420403 - Disclosure - Employment Benefit Plans Change in Benefit Obligation (Details)
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2420404 - Disclosure - Employment Benefit Plans Change in Plan Assets (Details)
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2420409 - Disclosure - Employment Benefit Plans Expected Benefit Payments (Details)
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2420402 - Disclosure - Employment Benefit Plans Net Cost Recognized (Details)
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2420410 - Disclosure - Employment Benefit Plans Other Details (Details)
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2420408 - Disclosure - Employment Benefit Plans Plan Assets (Details)
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2420405 - Disclosure - Employment Benefit Plans Plans with ABO in Excess of Plan Assets (Details)
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2320301 - Disclosure - Employment Benefit Plans (Tables)
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2114100 - Disclosure - Goodwill and Other Intangible Assets and Liablities
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2414402 - Disclosure - Goodwill and Other Intangible Assets and Liablities Goodwill Impairment and Carrying Value (Details)
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2414403 - Disclosure - Goodwill and Other Intangible Assets and Liablities Intangible Assets and Liabilities Carrying Amount (Details)
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2314301 - Disclosure - Goodwill and Other Intangible Assets and Liablities (Tables)
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2409405 - Disclosure - Income Tax Examination (Details)
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2109100 - Disclosure - Income Taxes
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2409404 - Disclosure - Income Taxes Components of Deferred Tax Assets / Liabilities (Details)
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2409402 - Disclosure - Income Taxes Income Tax Expense (Details)
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2409403 - Disclosure - Income Taxes Reconciliation of Statutory and Effective Tax Rates (Details)
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2309301 - Disclosure - Income Taxes (Tables)
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2411402 - Disclosure - Investments (Details)
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2111100 - Disclosure - Investments (Notes)
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2311301 - Disclosure - Investments (Tables)
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2115100 - Disclosure - Other Assets
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2415402 - Disclosure - Other Assets Low-Income Housing Partnership (Details)
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2415403 - Disclosure - Other Assets Right of Use Fixed Assets (Details)
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2315301 - Disclosure - Other Assets (Tables)
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2112100 - Disclosure - Property and Equipment, Net
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2412402 - Disclosure - Property and Equipment, Net (Details)
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2312301 - Disclosure - Property and Equipment, Net (Tables)
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2125100 - Disclosure - Quarterly Financial Data - Unaudited
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2425402 - Disclosure - Quarterly Financial Data - Unaudited (Details)
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2325301 - Disclosure - Quarterly Financial Data - Unaudited (Tables)
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2121100 - Disclosure - Related Party Transactions
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2421402 - Disclosure - Related Party Transactions (Details)
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2321301 - Disclosure - Related Party Transactions Related Party Transactions (Tables)
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2102100 - Disclosure - Significant Accounting Policies
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2402402 - Disclosure - Significant Accounting Policies (Details)
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2202201 - Disclosure - Significant Accounting Policies (Policies)
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2409406 - Disclosure - Uncertain Tax Positions (Details)
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2417407 - Disclosure - Variable Interest Entities - Leases (Details)
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