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40801 - Disclosure - Earnings Per Share (Schedule of Computation of Basic and Diluted Earnings Per Share) (Details)
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40903 - Disclosure - Stockholders Equity (Schedule of Impact of Noncontrolling Interest to Stockholders' Equity) (Details)
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41101 - Disclosure - Long-Term Debt - Schedule of Debt (Details)
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41301 - Disclosure - Fair Value (Schedule of Financial Assets and Liabilities Recorded at Fair Value on a Recurring Basis) (Details)
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41802 - Disclosure - Supplemental Condensed Consolidating Financial Information (Schedule of Condensed Consolidating Balance Sheet) (Details)
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41805 - Disclosure - Supplemental Condensed Consolidating Financial Information (Schedule of Condensed Consolidating Statement of Cash Flows) (Details)
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00090 - Document - Document and Entity Information
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00105 - Statement - Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical)
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10101 - Disclosure - Basis of Presentation and Significant Accounting Policies
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10201 - Disclosure - Accounting for Stock-Based Compensation
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10301 - Disclosure - Cost of Revenue
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10401 - Disclosure - Use of Estimates
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10501 - Disclosure - Acquisitions and Divestitures
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10601 - Disclosure - Income Taxes
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10701 - Disclosure - Goodwill and Other Intangible Assets
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10801 - Disclosure - Earnings per Share
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10901 - Disclosure - Stockholders Equity
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11001 - Disclosure - Equity Investments
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11101 - Disclosure - Long-Term Debt
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11201 - Disclosure - Fair Value of Financial Instruments
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11301 - Disclosure - Fair Value
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11401 - Disclosure - Recent Accounting Pronouncements
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11501 - Disclosure - Segment Information
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11601 - Disclosure - Contingencies
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11701 - Disclosure - Subsequent Events
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11801 - Disclosure - Supplemental Condensed Consolidating Financial Information
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20102 - Disclosure - Basis of Presentation and Significant Accounting Policies (Policies)
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20402 - Disclosure - Use of Estimates (Policies)
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20502 - Disclosure - Acquisitions and Divestitures (Policies)
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20702 - Disclosure - Goodwill and Other Intangible Assets (Policies)
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21202 - Disclosure - Fair Value of Financial Instruments (Policies)
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21302 - Disclosure - Fair Value (Policies)
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21602 - Disclosure - Contingencies (Policies)
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21801 - Disclosure - Supplemental Condensed Consolidating Financial Information (Policies)
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30103 - Disclosure - Basis of Presentation and Significant Accounting Policies (Tables)
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30203 - Disclosure - Accounting for Stock-Based Compensation (Tables)
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30803 - Disclosure - Earnings per Share (Tables)
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31103 - Disclosure - Long-Term Debt (Tables)
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31203 - Disclosure - Fair Value of Financial Instruments (Tables)
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31303 - Disclosure - Fair Value (Tables)
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31803 - Disclosure - Supplemental Condensed Consolidating Financial Information (Tables)
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40101 - Disclosure - Basis of Presentation and Significant Accounting Policies (Narrative) (Details)
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40102 - Disclosure - Basis of Presentation and Significant Accounting Policies (Operating Revenue, Net of Contractual Allowances and Discounts (But Before the Provision for Bad Debts)) (Details)
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40201 - Disclosure - Accounting for Stock-Based Compensation (Narrative) (Details)
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40203 - Disclosure - Accounting for Stock-Based Compensation (Schedule of Stock Options Valuation Assumptions) (Details)
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40204 - Disclosure - Accounting for Stock-Based Compensation (Schedule of Stock Options Activity) (Details)
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40205 - Disclosure - Accounting for Stock-Based Compensation (Schedule of Restricted Stock Activity) (Details)
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40206 - Disclosure - Accounting For Stock Based Compensation (Schedule of Phantom Stock and Restricted Stock Units Activity) (Details)
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40207 - Disclosure - Accounting for Stock-Based Compensation (Schedule of Director's Fees Deferral Plan Activity) (Details)
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40301 - Disclosure - Cost of Revenue (Details)
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40601 - Disclosure - Income Taxes (Details)
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40701 - Disclosure - Goodwill and Other Intangible Assets (Schedule of Goodwill) (Details)
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40802 - Disclosure - Earnings Per Share (Schedule of Antidilutive Securities (Details)
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40901 - Disclosure - Stockholders' Equity (Narratives) (Details)
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40902 - Disclosure - Stockholders' Equity (Schedule of Stockholders' Equity) (Details)
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41002 - Disclosure - Equity Investments (Summarized Combined Financial Information of Entities in Which Company Owns Equity Interest) (Details)
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41102 - Disclosure - Long-Term Debt - Schedule of Early Redemption Prices on 8.875% Senior Notes (Details)
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41103 - Disclosure - Long-Term Debt - Schedule of Early Redemption Prices on 8.0% Senior Notes (Details)
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41104 - Disclosure - Long-Term Debt - Credit Facility Origination (Details)
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41105 - Disclosure - Long-Term Debt - Credit Facility Amendments (Details)
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41106 - Disclosure - Long-Term Debt - Credit Facility - Terms (Details)
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41107 - Disclosure - Long-Term Debt - Credit Facility - End of Period Disclosures (Details)
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41201 - Disclosure - Fair Value of Financial Instruments (Schedule of Estimated Fair Value of Financial Instruments) (Details)
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41202 - Disclosure - Fair Value of Financial Instruments (Schedule of Interest Rate Swaps) (Details)
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41203 - Disclosure - Fair Value of Financial Instruments (Narratives) (Details)
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41204 - Disclosure - Fair Value of Financial Instruments (Schedule of Pre-tax Loss Recognized in the Consolidated Balance Sheets as a Component of Other Comprehensive Income) (Details)
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41205 - Disclosure - Fair Value of Financial Instruments (Schedule of Effective Portion of the Pre-tax Loss Reclassified from Accumulated Other Comprehensive Loss into Interest Expense on the Consolidated Statements of Income) (Details)
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41206 - Disclosure - Fair Value of Financial Instruments (Schedule of Fair Value of Derivative Instruments in the Consolidated Balance Sheets) (Details)
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41302 - Disclosure - Fair Value (Narrative) (Details)
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41501 - Disclosure - Segment Information (Schedule of Segment Operating Results) (Details)
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41601 - Disclosure - Contingencies (Narratives) (Details)
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41602 - Disclosure - Contingencies (Schedule of Pre-Tax Charges in Connection with Lawsuits) (Details)
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41701 - Disclosure - Subsequent Events (Acquisitions Narrative) (Details)
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41702 - Disclosure - Subsequent Events (Financing Transactions Narrative) (Details)
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41801 - Disclosure - Supplemental Condensed Consolidating Financial Information (Narratives) (Details)
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41803 - Disclosure - Supplemental Condensed Consolidating Financial Information (Schedule of Condensed Consolidating Statement of Income) (Details)
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