0000001 - Document - Document and Entity Information link:presentationLink link:calculationLink link:definitionLink 0000002 - Document - Audit Information link:presentationLink link:calculationLink link:definitionLink 9952151 - Statement - CONSOLIDATED STATEMENTS OF INCOME link:presentationLink link:calculationLink link:definitionLink 9952152 - Statement - CONSOLIDATED STATEMENTS OF INCOME - Alternative Calculation link:presentationLink link:calculationLink link:definitionLink 9952153 - Statement - CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME link:presentationLink link:calculationLink link:definitionLink 9952154 - Statement - CONSOLIDATED BALANCE SHEETS link:presentationLink link:calculationLink link:definitionLink 9952155 - Statement - CONSOLIDATED BALANCE SHEETS (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 9952156 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS link:presentationLink link:calculationLink link:definitionLink 9952157 - Statement - CONSOLIDATED STATEMENTS OF EQUITY link:presentationLink link:calculationLink link:definitionLink 9952158 - Disclosure - Organization and Summary of Significant Accounting Policies link:presentationLink link:calculationLink link:definitionLink 9952159 - Disclosure - Revenue Recognition link:presentationLink link:calculationLink link:definitionLink 9952160 - Disclosure - Earnings Per Share link:presentationLink link:calculationLink link:definitionLink 9952161 - Disclosure - Short-term and long-term investments link:presentationLink link:calculationLink link:definitionLink 9952162 - Disclosure - Contract assets and other receivables link:presentationLink link:calculationLink link:definitionLink 9952163 - Disclosure - Property and Equipment link:presentationLink link:calculationLink link:definitionLink 9952164 - Disclosure - Intangibles link:presentationLink link:calculationLink link:definitionLink 9952165 - Disclosure - Equity Method and Other Investments link:presentationLink link:calculationLink link:definitionLink 9952166 - Disclosure - Goodwill link:presentationLink link:calculationLink link:definitionLink 9952167 - Disclosure - Other Liabilities link:presentationLink link:calculationLink link:definitionLink 9952168 - Disclosure - Income Taxes link:presentationLink link:calculationLink link:definitionLink 9952169 - Disclosure - Long-Term Debt link:presentationLink link:calculationLink link:definitionLink 9952170 - Disclosure - Leases link:presentationLink link:calculationLink link:definitionLink 9952171 - Disclosure - Employee Benefit Plans link:presentationLink link:calculationLink link:definitionLink 9952172 - Disclosure - Contingencies link:presentationLink link:calculationLink link:definitionLink 9952173 - Disclosure - Noncontrolling Interests Subject to Put Provisions and Other Commitments link:presentationLink link:calculationLink link:definitionLink 9952174 - Disclosure - Stock-based compensation link:presentationLink link:calculationLink link:definitionLink 9952175 - Disclosure - Stockholder's equity link:presentationLink link:calculationLink link:definitionLink 9952176 - Disclosure - Accumulated Other Comprehensive (Loss) Income link:presentationLink link:calculationLink link:definitionLink 9952177 - Disclosure - Acquisitions and Divestitures link:presentationLink link:calculationLink link:definitionLink 9952178 - Disclosure - Held for Sale and Discontinued Operations link:presentationLink link:calculationLink link:definitionLink 9952179 - Disclosure - Variable Interest Entities link:presentationLink link:calculationLink link:definitionLink 9952180 - Disclosure - Fair Values of Financial Instruments link:presentationLink link:calculationLink link:definitionLink 9952181 - Disclosure - Segment Reporting link:presentationLink link:calculationLink link:definitionLink 9952182 - Disclosure - Supplemental Cash Flow Information link:presentationLink link:calculationLink link:definitionLink 9955511 - Disclosure - Organization and Summary of Significant Accounting Policies (Policies) link:presentationLink link:calculationLink link:definitionLink 9955512 - Disclosure - Revenue Recognition and Accounts Receivable Segment revenue by major payor (Tables) link:presentationLink link:calculationLink link:definitionLink 9955513 - Disclosure - Earnings Per Share (Tables) link:presentationLink link:calculationLink link:definitionLink 9955514 - Disclosure - Short-term and long-term invesmtents (Tables) link:presentationLink link:calculationLink link:definitionLink 9955515 - Disclosure - Contract assets and other receivables (Tables) link:presentationLink link:calculationLink link:definitionLink 9955516 - Disclosure - Property and Equipment (Tables) link:presentationLink link:calculationLink link:definitionLink 9955517 - Disclosure - Intangibles (Tables) link:presentationLink link:calculationLink link:definitionLink 9955518 - Disclosure - Equity Method and Other Investmetns Equity Method and Other Investments (Tables) link:presentationLink link:calculationLink link:definitionLink 9955519 - Disclosure - Goodwill (Tables) link:presentationLink link:calculationLink link:definitionLink 9955520 - Disclosure - Other Liabilities (Tables) link:presentationLink link:calculationLink link:definitionLink 9955521 - Disclosure - Income Taxes (Tables) link:presentationLink link:calculationLink link:definitionLink 9955522 - Disclosure - Long-Term Debt (Tables) link:presentationLink link:calculationLink link:definitionLink 9955523 - Disclosure - Leases (Tables) link:presentationLink link:calculationLink link:definitionLink 9955524 - Disclosure - Stock-based compensation and Shareholders’ Equity (Tables) link:presentationLink link:calculationLink link:definitionLink 9955525 - Disclosure - Stockholder's equity (Tables) link:presentationLink link:calculationLink link:definitionLink 9955526 - Disclosure - Accumulated Other Comprehensive (Loss) Income (Tables) link:presentationLink link:calculationLink link:definitionLink 9955527 - Disclosure - Acquisitions and Divestitures (Tables) link:presentationLink link:calculationLink link:definitionLink 9955528 - Disclosure - Fair Values of Financial Instruments (Tables) link:presentationLink link:calculationLink link:definitionLink 9955529 - Disclosure - Segment Reporting (Tables) link:presentationLink link:calculationLink link:definitionLink 9955530 - Disclosure - Supplemental Cash Flow Information (Tables) link:presentationLink link:calculationLink link:definitionLink 9955531 - Disclosure - Organization and Summary of Significant Accounting Policies - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955532 - Disclosure - Revenue Recognition and Accounts Receivable Revenue Recognition Segment Revenue by Payor (Details) link:presentationLink link:calculationLink link:definitionLink 9955533 - Disclosure - Revenue Recognition and Accounts Receivable - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955534 - Disclosure - Earnings Per Share - Reconciliations of Numerators and Denominators Used to Calculate Basic and Diluted Net Income Per Share (Details) link:presentationLink link:calculationLink link:definitionLink 9955535 - Disclosure - Short-term and long-term investments (Details) link:presentationLink link:calculationLink link:definitionLink 9955536 - Disclosure - Contract assets and other receivables (Details) link:presentationLink link:calculationLink link:definitionLink 9955537 - Disclosure - Property and Equipment (Details) link:presentationLink link:calculationLink link:definitionLink 9955538 - Disclosure - Property and Equipment - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955539 - Disclosure - Intangibles - Amortizable Intangible Assets Other Than Goodwill (Details) link:presentationLink link:calculationLink link:definitionLink 9955540 - Disclosure - Intangibles - Scheduled Amortization Charges from Intangible Assets and Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 9955541 - Disclosure - Intangibles - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955542 - Disclosure - Equity Method and Other Investmetns Equity Method and Other Investments (Details) link:presentationLink link:calculationLink link:definitionLink 9955543 - Disclosure - Equity Method and Other Investments - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955544 - Disclosure - Goodwill - Changes in Carrying Value of Goodwill by Reportable Segments (Details) link:presentationLink link:calculationLink link:definitionLink 9955545 - Disclosure - Goodwill - Schedule of Reporting Units Goodwill Balances (Details) link:presentationLink link:calculationLink link:definitionLink 9955546 - Disclosure - Goodwill - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955547 - Disclosure - Other Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 9955548 - Disclosure - Income Taxes - Schedule of Income Before Income Taxes (Details) link:presentationLink link:calculationLink link:definitionLink 9955549 - Disclosure - Income Taxes - Components of Income Tax Expense (Details) link:presentationLink link:calculationLink link:definitionLink 9955550 - Disclosure - Income Taxes - Reconciliation Between U.S. Federal Income Tax Rate and Our Effective Tax Rate From Continuing Operations (Details) link:presentationLink link:calculationLink link:definitionLink 9955551 - Disclosure - Income Taxes - Deferred Tax and Liabilities Arising from Temporary Differences (Details) link:presentationLink link:calculationLink link:definitionLink 9955552 - Disclosure - Income Taxes - Reconciliation of Beginning and Ending Liability for Unrecognized Tax Benefits that Do Not Meet More-Likely-Than-Not Threshold (Details) link:presentationLink link:calculationLink link:definitionLink 9955553 - Disclosure - Income Taxes - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955554 - Disclosure - Long-Term Debt - Schedule of Long-Term Debt (Details) link:presentationLink link:calculationLink link:definitionLink 9955555 - Disclosure - Long-Term Debt - Scheduled Maturities of Long-term Debt (Details) link:presentationLink link:calculationLink link:definitionLink 9955556 - Disclosure - Long-Term Debt - Derivative Instruments (Details) link:presentationLink link:calculationLink link:definitionLink 9955557 - Disclosure - Long-Term Debt - Effects of Interest Rate Swap and Cap Agreements (Details) link:presentationLink link:calculationLink link:definitionLink 9955558 - Disclosure - Long-Term Debt - Additional information (Detail) link:presentationLink link:calculationLink link:definitionLink 9955559 - Disclosure - Leases Lease Expense Components (Details) link:presentationLink link:calculationLink link:definitionLink 9955560 - Disclosure - Leases Leases Other Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955561 - Disclosure - Leases - Future Minimum Lease Payments Under Non-Cancelable Operating and Capital Leases (Details) link:presentationLink link:calculationLink link:definitionLink 9955562 - Disclosure - Leases - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955563 - Disclosure - Employee Benefit Plans - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955564 - Disclosure - Contingencies (Details) link:presentationLink link:calculationLink link:definitionLink 9955565 - Disclosure - Noncontrolling Interests Subject to Put Provisions and Other Commitments - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955566 - Disclosure - Long-term Incentive Compensation and Shareholders’ Equity - Summary of Status of Awards Under Stock-Based Compensation Plans and Agreements (Details) link:presentationLink link:calculationLink link:definitionLink 9955567 - Disclosure - Long-term Incentive Compensation and Shareholders’ Equity - Summary of Range of Exercise Prices (Details) link:presentationLink link:calculationLink link:definitionLink 9955568 - Disclosure - Long-term Incentive Compensation and Shareholders Equity - Summary of Weighted Average Valuation Inputs (Details) link:presentationLink link:calculationLink link:definitionLink 9955569 - Disclosure - Long-term Incentive Compensation and Shareholders’ Equity - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955570 - Disclosure - Stock Repurchases Tender Offer (Details) link:presentationLink link:calculationLink link:definitionLink 9955571 - Disclosure - Shareholder's equity (Details) link:presentationLink link:calculationLink link:definitionLink 9955572 - Disclosure - Related Party Transactions (Details) link:presentationLink link:calculationLink link:definitionLink 9955573 - Disclosure - Accumulated Other Comprehensive (Loss) Income (Details) link:presentationLink link:calculationLink link:definitionLink 9955574 - Disclosure - Acquisitions - Components of Routine Acquisitions (Details) link:presentationLink link:calculationLink link:definitionLink 9955575 - Disclosure - Acquisitions - Assets acquired and liabilities assumed (Details) link:presentationLink link:calculationLink link:definitionLink 9955576 - Disclosure - Schedule Of Other Information Related To Acquired Intangibles and Goodwill (Details) link:presentationLink link:calculationLink link:definitionLink 9955577 - Disclosure - Acquisitions and Divestitures - Pro Forma Summary of Results of Operation (Details) link:presentationLink link:calculationLink link:definitionLink 9955578 - Disclosure - Acquisitions and Divestitures - Reconciliation of Changes in Contingent Earn-Out Obligations (Details) link:presentationLink link:calculationLink link:definitionLink 9955579 - Disclosure - Acquisitions and Divestitures - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955580 - Disclosure - Held for Sale and Discontinued Operations - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955581 - Disclosure - Variable Interest Entities - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955582 - Disclosure - Fair Values of Financial Instruments - Assets, Liabilities and Temporary Equity Measured at Fair Value on Recurring Basis (Details) link:presentationLink link:calculationLink link:definitionLink 9955583 - Disclosure - Fair Values of Financial Instruments (Details) link:presentationLink link:calculationLink link:definitionLink 9955584 - Disclosure - Segment Reporting - Summary of Segment Net Revenues, Segment Operating Income (Loss) and Reconciliation of Segment Income to Consolidated Income from Continuing Operations Before Income Taxes (Details) link:presentationLink link:calculationLink link:definitionLink 9955585 - Disclosure - Segment Reporting - Summary of Depreciation and Amortization Expense by Segment (Details) link:presentationLink link:calculationLink link:definitionLink 9955586 - Disclosure - Segment Reporting - Summary of Expenditures for Property and Equipment by Segment (Details) link:presentationLink link:calculationLink link:definitionLink 9955587 - Disclosure - Segment Reporting - Summary of Assets by Segment (Details) link:presentationLink link:calculationLink link:definitionLink 9955588 - Disclosure - Segment Reporting - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955589 - Disclosure - Supplemental Cash Flow Information (Details) link:presentationLink link:calculationLink link:definitionLink