Document and Entity Information [Abstract] Document and entity information. Statement, Equity Components [Axis] Equity Component [Domain] ASSETS Assets [Abstract] Cash and Cash Equivalents, at Carrying Value Cash and cash equivalents at end of period Cash and cash equivalents at beginning of period Cash and cash equivalents Accounts Receivable, Net, Current Accounts receivable, net Accounts receivable, net of allowance for doubtful accounts of $8,427 and $8,576, respectively Allowance for doubtful accounts receivable Allowance for Doubtful Accounts Receivable Other Receivables, Net, Current Other receivables Inventories of supplies Inventory, Net Deferred Tax Assets, Net, Current Deferred tax asset, net Prepaid Expense and Other Assets, Current Prepaids and other current assets Assets, Current, Total Total current assets Total current assets Property, Plant and Equipment, Net Property and equipment, net Equity Method Investments Investments in unconsolidated affiliates Goodwill Goodwill Intangible Assets, Net (Excluding Goodwill) Intangible assets, net Other assets Other Assets, Noncurrent Assets, Total Total assets Total assets LIABILITIES AND EQUITY Liabilities and Equity [Abstract] Accounts payable Accounts Payable, Current Accrued salaries and benefits Employee-related Liabilities, Current Due to affiliates Due to Affiliate, Current Accrued interest Accrued Liabilities, Current Long-term Debt, Current Maturities Current portion of long-term debt Other current liabilities Other Liabilities, Current Liabilities, Current, Total Total current liabilities Total current liabilities Long-term Debt, Excluding Current Maturities Long-term debt, less current portion Other Liabilities, Noncurrent Other long-term liabilities Deferred Tax Liabilities, Noncurrent Deferred tax liability, net Liabilities, Total Total liabilities Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Equity (Note 9): United Surgical Partners International, Inc. (USPI) stockholder's equity: Stockholders' Equity Attributable to Parent [Abstract] Common Stock, Value, Issued Common stock, $0.01 par value; 100 shares authorized; issued and outstanding Common stock, par value Common Stock, Par or Stated Value Per Share Common stock, shares authorized Common Stock, Shares Authorized Common stock, shares issued Common Stock, Shares, Issued Common stock, shares outstanding Common Stock, Shares, Outstanding Additional paid-in capital Additional Paid in Capital, Common Stock Accumulated Other Comprehensive Income (Loss), Net of Tax Accumulated other comprehensive income (loss) Retained Earnings (Accumulated Deficit) Retained earnings (deficit) Stockholders' Equity Attributable to Noncontrolling Interest Noncontrolling interests Noncontrolling interests - nonredeemable (Note 4) Liabilities and Equity, Total Total liabilities and equity Total liabilities and equity Revenues: Revenues [Abstract] Net patient service revenues Health Care Organization, Patient Service Revenue Management and Contract Service Revenues Management and contract service revenues Management and contract service revenues. Other revenues Health Care Organization, Other Revenue Sales Revenue, Services, Net, Total Total revenues Revenues Equity in earnings of unconsolidated affiliates Income (Loss) from Equity Method Investments Operating expenses: Operating Expenses [Abstract] Salaries, benefits, and other employee costs Labor and Related Expense Medical services and supplies Health Care Organization, Medical Supplies and Drugs Expense Other operating expenses Other Cost and Expense, Operating General and administrative expenses General and Administrative Expense Provision for doubtful accounts Provision for Doubtful Accounts Net Gain Loss on Deconsolidations Disposals and Impairments Net loss (gain) on deconsolidations, disposals and impairments Losses on deconsolidations, disposals and impairments (Notes 2 and 8). Depreciation and amortization Depreciation, Depletion and Amortization Operating Expenses, Total Total operating expenses Operating Income (Loss) Operating income Operating income Interest income Investment Income, Interest Interest Expense Interest expense, net Other, net Nonoperating Income (Expense), Total Total other expense, net Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest Income from continuing operations before income taxes Income Tax Expense (Benefit) Income tax expense Income (Loss) from Continuing Operations, Including Portion Attributable to Noncontrolling Interest Income from continuing operations Income from continuing operations Discontinued operations, net of tax (Note 2): Discontinued Operation, Income (Loss) from Discontinued Operation During Phase-out Period, Net of Tax Income (loss) from discontinued operations Income (loss) from discontinued operations Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax Total loss from disposal of discontinued operations Gain on disposal of discontinued operations Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest, Total Earnings from discontinued operations Total earnings (loss) from discontinued operations Earnings from discontinued operations, net of tax Net income Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Net income Net income Net Income (Loss) Attributable to Noncontrolling Interest Less: Net income attributable to noncontrolling interests Net income attributable to USPI's common stockholder Net Income (Loss) Attributable to Parent Net income attributable to Parent Net income attributable to USPI's common stockholder Amounts attributable to USPI's common stockholder: Income Amounts Attributable to Parent, Disclosures [Abstract] Income (Loss) from Continuing Operations Attributable to Parent Income from continuing operations, net of tax Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent Earnings (loss) from discontinued operations, net of tax Other Comprehensive Income (Loss), Tax [Abstract] Other comprehensive income: Other comprehensive income (loss): Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax Unrealized gain on interest rate swap, net of tax Comprehensive Income (Loss), Net of Tax, Attributable to Parent Comprehensive income Comprehensive income attributable to USPI's common stockholder Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Less: Comprehensive income attributable to noncontrolling interests Comprehensive Income Losses Net of Tax Including Portion Attributable to Noncontrolling Interest Comprehensive income attributable to USPI's common stockholder Comprehensive income (loss) attributable to USPI's common stockholder. Statement [Table] Statement [Line Items] Outstanding Stock Awards [Member] Outstanding Shares Balance Ending balance, shares Beginning balance, shares Par Value [Member] Par Value Par value. Additional Paid in Capital [Member] Additional Paid-in Capital Accumulated Other Comprehensive Income [Member] Accumulated Other Comprehensive Income (Loss) Retained Earnings [Member] Retained Earnings (Deficit) Noncontrolling Interest [Member] Noncontrolling Interests Non-Redeemable Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders Distributions to noncontrolling interests Distributions to noncontrolling interests Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests Purchases of noncontrolling interests Noncontrolling Interest, Increase from Equity Issuance or Sale of Parent Equity Interest Sales of noncontrolling interests Sales of noncontrolling interests Contribution Related to Equity Award Grants by Other Contribution related to equity award grants by Parent and other Contribution related to equity award grants by USPI Group Holdings, Inc. and other. Net Income Including Non Controlling Interest Non Redeemable Net income (Loss) Net income. Cash flows from operating activities: Net Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net income to net cash provided by operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Amortization of debt issue costs and discount Amortization of Financing Costs and Discounts Deferred Income Tax Expense (Benefit) Deferred income tax Income (Loss) from Equity Method Investments, Net of Dividends or Distributions Equity in earnings of unconsolidated affiliates, net of distributions received Equity-based compensation Share-based Compensation Increases (decreases) in cash from changes in operating assets and liabilities, net of effects from purchases of new businesses: Increase (Decrease) in Operating Capital [Abstract] Increase (Decrease) in Accounts Receivable Accounts receivable Increase (Decrease) in Other Receivables Other receivables Increase (Decrease) in Prepaid Expense and Other Assets Inventories of supplies, prepaids and other current assets Accounts payable and other current liabilities Increase (Decrease) in Accounts Payable and Accrued Liabilities Increase (Decrease) in Other Noncurrent Assets and Liabilities, Net Long-term liabilities Net Cash Provided by (Used in) Operating Activities Net cash provided by operating activities Net cash provided by operating activities Cash flows from investing activities: Net Cash Provided by (Used in) Investing Activities [Abstract] Proceeds from Sale of Productive Assets Proceeds from sale of businesses and equity interests Payments to Acquire Property, Plant, and Equipment Purchases of property and equipment Purchases of Marketable Securities Net Purchases of marketable securities, net Purchases of marketable securities, net. Returns of Capital from Unconsolidated Affiliates Returns of capital from unconsolidated affiliates Returns of capital from unconsolidated affiliates. Increase Decrease in Deposits and Notes Receivable Decrease in deposits and notes receivable Decrease (increase) in deposits and notes receivable. Net Cash Provided by (Used in) Investing Activities Net cash used in investing activities Net cash provided by investing activities Cash flows from financing activities: Net Cash Provided by (Used in) Financing Activities [Abstract] Proceeds from Issuance of Long-term Debt Long-term borrowings, net Proceeds from long-term debt, net of debt issuance costs Repayments of Long-term Debt Payments on long-term debt Proceeds from (Payments to) Noncontrolling Interests Purchases and sales of noncontrolling interests, net Sales of noncontrolling interests, net Payments of Dividends, Common Stock Payment of common stock dividend Cash dividend paid Dividend to Parent's equity holders (Note 9) Decrease Increase in Cash Held on Behalf of Unconsolidated Affiliates Increase in cash held on behalf of unconsolidated affiliates and other (Decrease) increase in cash held on behalf of unconsolidated affiliates. Payments of Dividends, Noncontrolling Interest Distributions to noncontrolling interests Net Cash Provided by (Used in) Financing Activities Net cash used in financing activities Net cash used in financing activities Operating cash flows Cash Provided by (Used in) Operating Activities, Discontinued Operations Investing cash flows Cash Provided by (Used in) Investing Activities, Discontinued Operations Financing cash flows Cash Provided by (Used in) Financing Activities, Discontinued Operations Net Cash Provided by (Used in) Discontinued Operations Net cash provided by (used in) discontinued operations Net cash provided by (used in) discontinued operations Effect of Exchange Rate on Cash and Cash Equivalents Effect of exchange rate changes on cash and cash equivalents Cash and Cash Equivalents, Period Increase (Decrease) Net increase (decrease) in cash and cash equivalents Net increase (decrease) in cash Supplemental information: Supplemental Cash Flow Information [Abstract] Interest Paid, Net Interest paid - continuing operations Income Taxes Paid, Net Income taxes paid - continuing operations Non-cash transactions: Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Assets acquired under capital lease obligations Capital Lease Obligations Incurred Noncontrolling Interests Noncontrolling Interest Disclosure [Text Block] Noncontrolling Interests [Abstract] Other Investments [Text Block] Other Investments Other Investments. Other Investments [Abstract] Long-term Debt Long-term Debt [Text Block] Long-term Debt [Abstract] Related Party Transactions Related Party Transactions Disclosure [Text Block] Related Party Transactions [Abstract] Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Equity Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Commitments and Contingencies [Abstract] Subsequent Events Subsequent Events [Text Block] Subsequent Events [Abstract] Condensed Consolidating Financial Statements [Abstract] Amendment Flag Current Fiscal Year End Date Document Period End Date Document Type Entity Central Index Key Entity Common Stock, Shares Outstanding Entity Filer Category Entity Registrant Name Document Fiscal Period Focus Document Fiscal Year Focus Consolidated Balance Sheets [Abstract] Condensed Consolidating Financial Statements Consolidated Statements of Income [Abstract] Condensed Consolidating Statements of Income: Consolidated Statements of Comprehensive Income [Abstract] Condensed Consolidating Statements of Comprehensive Income: Consolidated Statements of Changes in Equity [Abstract] Consolidated Statements of Cash Flows [Abstract] Condensed Consolidating Statements of Cash Flows: Gains (Losses) on Extinguishment of Debt Loss on early retirement of debt Loss on early retirement of debt Other Comprehensive Income Unrealized Gain Loss on Foreign Currency Contract, Net of Tax Unrealized loss on foreign currency contract, net of tax Other comprehensive Income unrealized Gain loss on foreign currency contract net of tax. Reclassifications Due to Spin off of Foreign Subsidiaries [Abstract] Reclassification due to spin-off of U.K. subsidiary: Reclassifications due to spin off of Foreign subsidiaries. Stockholders' Equity Note, Spinoff Transaction Spin-off of U.K. subsidiaries (Note 2) Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Total Ending balance Beginning balance Total equity Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Basis of Presentation Disposal Groups, Including Discontinued Operations, Disclosure [Text Block] Discontinued Operations Fair Value Disclosures [Text Block] Fair Value of Financial Instruments Investments in Unconsolidated Affiliates and Business Combination [Abstract] Fair Value of Financial Instruments [Abstract] Other Comprehensive Income (Loss), Net of Tax Total other comprehensive income Total other comprehensive income (loss) Other comprehensive income Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment Realized upon Sale or Liquidation, Net of Tax Foreign currency translation adjustments Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Foreign currency translation adjustments Temporary Equity, Carrying Amount, Attributable to Noncontrolling Interest Balance, Ending Balance, Beginning Basis of Presentation [Table] Basis of presentation. Facilities [Axis] Facilities. Facilities [Domain] Facilities. Short Stay Surgical Facilities [Member] Short-stay surgical facilities [Member] Short stay surgical facilities. Basis of Presentation (Textual) [Abstract] Basis of presentation. Summary of certain amounts of Company's discontinued operations Schedule of Disposal Groups, Including Discontinued Operations, Income Statement, Balance Sheet and Additional Disclosures [Table Text Block] Disposal Group, Including Discontinued Operation, Revenue Revenues Discontinued Operation, Tax Effect of Discontinued Operation Income tax Benefit (expense) Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax Income (loss) from discontinued operations before income taxes Discontinued Operation, Gain (Loss) from Disposal of Discontinued Operation, before Income Tax Loss on disposal of discontinued operations before income taxes Schedule of Equity Method Investments [Table Text Block] Summarized financial information equity method investees Equity Method Investment Summarized Financial Information Unconsolidated Facilities Operated at Period end Unconsolidated facilities operated at period-end Equity method investment summarized financial information unconsolidated facilities operated at period end. Equity Method Investment Summarized Financial Information Operating Expenses [Abstract] Operating expenses: Equity method investment summarized financial information operating expenses. Equity Method Investment Summarized Financial Information Interest Expense Interest expense, net Equity method investment summarized financial information interest expense. Equity Method Investment Summarized Financial Information Other Nonoperating Income Expense Other, net Equity method investment summarized financial information other nonoperating income expense. Equity Method Investment Financial Statement Reported Amounts [Abstract] Summarized financial information equity method investees Equity Method Investment Summarized Financial Information Income Statement [Abstract] Income statement information: Equity Method Investment Summarized Financial Information Revenue Revenues Equity Method Investment Summarized Financial Information [Abstract] Balance sheet information: Equity Method Investment Summarized Financial Information Current Assets Current assets Equity Method Investment Summarized Financial Information Noncurrent Assets Noncurrent assets Equity Method Investment Summarized Financial Information Current Liabilities Current liabilities Equity Method Investment Summarized Financial Information Noncurrent Liabilities Noncurrent liabilities Investment Holdings [Table] Investment Geographic Region [Axis] Investment Geographic Region [Domain] Investment Holdings [Line Items] Change in equity from Net Income Loss Attributable to Parent and Transfers to Noncontrolling Interests Increase in equity from net income attributable to USPI and transfers to noncontrolling interests Change in equity from net income loss attributable to parent and transfers to noncontrolling interests. Transfers to Noncontrolling Interests [Abstract] Transfers to the noncontrolling interests: Transfers to noncontrolling interests. Net Transfers to Noncontrolling Interests Net transfers to noncontrolling interests Net transfers to noncontrolling interests. Net Income (Loss) Attributable to Redeemable Noncontrolling Interest Net income attributable to noncontrolling interests Number of Facilities Number of facilities Number of facilities. Redeemable Noncontrolling Interests [Member] Noncontrolling Interests - Redeemable [Member] Redeemable noncontrolling interests. Basis of Presentation [Line Items] Basis of presentation. Discontinued Operation Tax Effect Of Income Loss From Disposal Of Discontinued Operation Investments in Unconsolidated Affiliates and Business Combination (Textual) [Abstract] Investments in unconsolidated affiliates and business combination. Investments in Unconsolidated Affiliates and Business Combination (Textual) [Abstract] Discontinued Operation, Tax Effect of Income (Loss) from Disposal of Discontinued Operation Income tax benefit Business Acquisition, Cost of Acquired Entity, Purchase Price Purchase price adjustments, cash paid Long Term Debt (Textual) [Abstract] Long-term Debt (Textual) [Abstract] Long-term debt. Non Extended Term Loans [Member] Non-extended term loans [Member] Non-extended term loans. Extended Term Loans [Member] Extended term loans [Member] Extended term loans. Credit Facility [Axis] Credit Facility [Domain] Revolving Credit Facility [Member] New revolving facility [Member] Credit facility maximum borrowings capacity Line of Credit Facility, Maximum Borrowing Capacity Long-term Debt, Weighted Average Interest Rate Daily-unused commitment fee percentage Line of Credit Facility, Unused Capacity, Commitment Fee Percentage Discontinued Operations (Textual) [Abstract] Discontinued Operations (Textual) [Abstract] Discontinued operations. Noncontrolling Interests (Textual) [Abstract] Noncontrolling interests. Loan to Foreign Subsidiary Loan to U.K. subsidiary Loan to foreign subsidiary. Notional Amount of Foreign Currency Derivatives Foreign currency contract Settlement of Foreign Currency Contract Settlement of Foreign currency contract due to spin-off of U.K. subsidiary Settlement of foreign currency contract. Loan Due Date Loan, due date Loan due date. Fair Value of Financial Instruments (Textual) [Abstract] Fair value of financial instruments. Fair Value of Financial Instruments (Textual) [Abstract] Long-term Debt, Fair Value Estimated fair value of long-term debt Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block] Equity-based compensation included in statements of income, classified by line item Salaries Benefit and Other Employee Costs [Member] Salaries, benefits and other employee costs [Member] Salaries benefit and other employee costs. Share Awards [Member] Share awards. Share awards [Member] Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table] Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs, by Report Line [Axis] Employee Service Share-based Compensation, Allocation of Recognized Period Costs, Report Line [Domain] General and Administrative Expense [Member] General and administrative expenses [Member] Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] Allocated Share-based Compensation Expense Expense before income tax benefit Employee Service Share-based Compensation, Tax Benefit from Compensation Expense Income tax benefit Allocated Share-based Compensation Expense, Net of Tax Total equity-based compensation expense, net of tax Total equity-based compensation expense, net of tax Employee Stock Option [Member] Stock options [Member] Equity (Textual) [Abstract] Equity. Equity (Textual) [Abstract] Related Party Transactions (Textual) [Abstract] Related party transactions. Related Party Transactions (Textual) [Abstract] Related Party Transaction, Selling, General and Administrative Expenses from Transactions with Related Party Accrued management fee Commitments and Contingencies (Additional Textual) [Abstract] Commitments and contingencies. Commitments and Contingencies (Additional Textual) [Abstract] Number of Facilities Sold Number of facilities sold. Number of facilities sold Schedule of Guarantor Obligations [Table] Guarantor Obligations [Line Items] Schedule of Condensed Balance Sheet [Table Text Block] Condensed Consolidating Balance Sheets Schedule of Condensed Income Statement [Table Text Block] Condensed Consolidating Statements of Income Schedule of Condensed Cash Flow Statement [Table Text Block] Condensed Consolidating Statements of Cash Flows Non Participating Investees [Member] Non-Participating Investees [Member] Non participating investees. Guarantor Subsidiaries [Member] Guarantors [Member] Consolidation, Eliminations [Member] Consolidation Adjustments [Member] Intangible Assets, Net (Including Goodwill) Goodwill and intangible assets, net Accrued Liabilities and Other Liabilities Accrued expenses and other Assets, Current [Abstract] Current assets: Liabilities, Current [Abstract] Current liabilities: Operating Expenses Excluding Depreciation and Amortization Operating expenses, excluding depreciation and amortization Operating expenses excluding depreciation and amortization. Legal Entity [Axis] Entity [Domain] Schedule of Condensed Financial Statements [Table] Condensed Financial Statements, Captions [Line Items] Purchases and Sales of New Businesses and Equity Interests Net Purchases and sales of new businesses and equity interests. Purchases and sales of new businesses and equity interests, net Condensed Consolidating Financial Statements (Textual) [Abstract] Condensed consolidating financial statements. Condensed Consolidating Financial Statements (Textual) [Abstract] Senior Notes Outstanding notes Debt Instrument, Interest Rate, Stated Percentage Senior notes, interest rate Adjustment to Additional Paid in Capital [Abstract] Noncontrolling Interests Adjustment to additional paid in capital. Noncontrolling Interests Redeemable [Abstract] Schedule of redeemable noncontrolling interests Noncontrolling interests redeemable. Stockholders' Equity Attributable to Parent, Total Parent's equity Total USPI stockholder's equity Equity Method Investment Summarized Financial Information Operating Expenses Total operating expenses Equity method investment summarized financial information operating expenses. Derivative Instruments and Hedging Activities Disclosure [Text Block] Derivatives Condensed Financial Statements [Text Block] Condensed Consolidating Financial Statements Investments Effective Date [Axis] Investments effective date. Investments Effective Date [Axis] Investments Effective Date [Domain] Investments effective date. Investments Effective Date [Domain] Effective Date One [Member] Feb-2012 [Member] Effective date one. Effective Date Two [Member] Mar-2012 [Member] Effective date two. Various Effective Dates [Member] Various [Member] Various effective dates. Other Investments (Textual) [Abstract] Other Investments (Textual) [Abstract] Other investments textual. Fair Value, Inputs, Level 2 [Member] Level 2 [Member] Fair Value Measurements, Recurring and Nonrecurring [Table] Measurement Frequency [Axis] Fair Value, Measurements, Fair Value Hierarchy [Domain] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Letters of Credit Outstanding, Amount Letters of credit outstanding Commitments and Contingencies (Textual) [Abstract] Commitments and contingencies. Commitments and Contingencies (Textual) [Abstract] Other Nonoperating Income (Expense) Other income (expense), net Commitments and Contingencies Commitments and contingencies (Note 11) Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest [Abstract] Net Cash Provided by (Used in) Discontinued Operations [Abstract] Cash flows from discontinued operations: Basis of Presentation [Abstract] Discontinued Operations [Abstract] Long Term Debt (Additional Textual) [Abstract] Long term debt. Long Term Debt (Additional Textual) [Abstract] Derivatives [Abstract] Equity [Abstract] Summary of certain amounts of Company's discontinued operations Discontinued Operation, Income (Loss) from Discontinued Operation Disclosures [Abstract] Gain Loss on Spinoff Transaction Gain or loss recorded on the spin-off of the U.K. operations Gain (loss) on spinoff transaction. UNITED STATES U.S. facilities [Member] UNITED KINGDOM U.K. facilities [Member] Basis of Presentation [Axis] Basis of presentation. Basis of Presentation [Domain] Basis of presentation. Consolidated Results [Member] Consolidated results [Member] Consolidated results. Equity Method [Member] Equity method [Member] Equity method. Joint Ownership [Member] Joint ownership [Member] Joint ownership. Physician Owners [Member] Physician owners [Member] Physician owners. Equity Method Investment Summarized Financial Information Operating Income Loss Operating income Equity method investment summarized financial information operating income loss. Equity Method Investment Summarized Financial Information Income Loss Before Taxes Income before income taxes Equity method investment summarized financial information income loss before taxes. Equity Method Investment Summarized Financial Information Labor and Related Expense Salaries, benefits, and other employee costs Equity method investment summarized financial information labor and related expense. Equity Method Investment Summarized Financial Information Health Care Organization Medical Supplies and Drugs Expense Medical services and supplies Equity method investment summarized financial information health care organization medical supplies and drugs expense. Equity Method Investment Summarized Financial Information Other Cost and Expense Operating Other operating expenses Equity method investment summarized financial information other cost and expense operating. Equity Method Investment Summarized Financial Information Gain Loss on Asset Disposals Net gain on asset disposals Equity method investment summarized financial information gain loss on asset disposals. Equity Method Investment Summarized Financial Information Depreciation Depletion and Amortization Depreciation and amortization Equity method investment summarized financial information depreciation depletion and amortization. Facility Location One [Member] Midland, Texas [Member] Facility location one. Facility Location Two [Member] Chandler, Arizona [Member] Facility location two. Various Facility Location [Member] Various [Member] Various facility location. Summary of Cash Flow by Acquisitions and Sale of Equity Interests [Table Text Block] Summary of cash outflow by acquisitions and sale of equity interests Summary of cash flow by acquisitions and sale of equity interests. Purchases of New Businesses and Equity Interests Net of Cash Received Purchases of new businesses and equity interests, net of cash received Purchases of new businesses and equity interests, net of cash received. Summary of cash outflow by acquisitions and sale of equity interests Payments to Acquire Interest in Subsidiaries and Affiliates [Abstract] Payments to Acquire Interest in Subsidiaries and Affiliates Net cash outflow by acquisitions and sale of equity interests Redeemable Noncontrolling Interest [Table Text Block] Schedule of redeemable noncontrolling interests Noncontrolling Interest, Decrease from Deconsolidation Acquisition of new business Increase Decrease in Additional Paid in Capital for Sales of Subsidiaries Equity Interests Decrease in USPI's additional paid-in capital for sales of subsidiaries' equity interests Increase or decrease in USPI's additional paid-in capital for sales of subsidiaries equity interests. Increase Decrease in Additional Paid In Capital for Purchases of Subsidiaries Equity Interests (Decrease) increase in USPI's additional paid-in capital for purchases of subsidiaries equity interests Increase or decrease in USPI's additional paid-in capital for purchases of subsidiaries equity interests. Consolidated Facilities Consolidated facilities by the company Consolidated facilities. New Term Loans [Member] New term loans. New term loans [Member] Line of Credit Facility, Expiration Date Credit facility expiration date Repayments of Long-term Lines of Credit Repayment of debt Line Of Credit Facility Participation Fee Percentage Quarterly participation fee percentage Line of credit facility participation fee percentage. Interest rates of amended credit facility Debt Instrument, Basis Spread on Variable Rate Eight Point Eight Seven Five Percentage Senior Subordinated Notes [Member] 8 7/8% Senior subordinated notes. 8 7/8% senior subordinated notes [Member] Zero Point Nine Two Five Senior Subordinated Toggle Notes [Member] 9 1/4%/10% senior subordinated toggle notes [Member] 9 1/4%/10% senior subordinated toggle notes. Nine Point Zero Percentage Senior Notes Due Two Thousand Twenty [Member] 9.0% senior notes due 2020. 9.0% senior notes due 2020 [Member] Senior notes, maturity date Ratio [Axis] Ratio [Axis] Ratio Ratio [Domain] Ratio Ratio [Domain] Numerator [Member] Numerator. Numerator [Member] Denominator [Member] Denominator. Denominator [Member] Weighted average interest rate of credit facility Redeemable Noncontrolling Interest, by Legal Entity [Table] Redeemable Noncontrolling Interest [Line Items] Schedule of Long-term Debt Instruments [Table] Letter of Credit [Member] Letter of Credit [Member] Range [Axis] Range [Domain] Minimum [Member] Minimum [Member] Maximum [Member] Maximum [Member] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument [Line Items] Number of Surgical Facilities Operates and Manages Number of surgical facilities operates and manages. Number of surgical facilities operates and manages Schedule of Variable Interest Entities [Table] Variable Interest Entities [Axis] Variable Interest Entity, Classification [Domain] Variable Interest Entity [Line Items] Variable Interest Entity, Primary Beneficiary [Member] Entity operations not control with voting rights [Member] Available-for-sale Securities, Fair Value Disclosure Marketable securities held by wholly-owned insurance subsidiary Fair Value of Financial Instruments (Additional Textual) [Abstract] Fair value of financial instruments additional textual. Fair Value of Financial Instruments (Additional Textual) [Abstract] Other Current Assets [Member] Other current assets [Member] Balance Sheet Location [Axis] Balance Sheet Location [Domain] Variable Interest Entity, Consolidated, Carrying Amount, Assets Total assets Variable Interest Entity, Consolidated, Carrying Amount, Liabilities Total liabilities owed to third parties Share-based Compensation, Allocation and Classification in Financial Statements [Abstract] Equity-based compensation included in Statements of Income, classified by type of award Equity-based compensation included in Statements of Income, classified by line item Award Type [Axis] Award Type [Domain] General and administrative expenses Other Current Liabilities [Member] Other current liabilities. Other current liabilities [Member] Other Long Term Liabilities [Member] Other long-term liabilities. Other long-term liabilities [Member] Management Fee Payable Related Party Transactions (Additional Textual) [Abstract] Related party transactions additional textual. Related Party Transactions (Additional Textual) [Abstract] Annual Rate of Management Fees Payable Accrual Management fees accrual at annual rate Annual rate of management fees payable accrual. Payments for Fees Cash paid to related party Debt Instrument, Maturity Date Debt maturity date Subsidiary of Common Parent [Member] Consolidated subsidiaries [Member] Majority-Owned Subsidiary, Unconsolidated [Member] Unconsolidated affiliated companies [Member] Obligation of Sale of Facilities [Member] Obligation of sale of facilities. Obligation of sale of facilities [Member] Changes in Operating and Related Parties Assets and Liabilities and Noncash Items Included in Net Income Loss Changes in operating and intercompany assets and liabilities and noncash items included in net income loss. Changes in operating and intercompany assets and liabilities and noncash items included in net income Payments for (Proceeds from) Other Investing Activities Other items, net Guarantors Obligation Percentage Guarantors obligation percentage. Guarantors obligation percentage Equity Method Investment, Ownership Percentage Additional ownership percentage in New Jersey Number of Increased Consolidated Facilities Number of increased consolidated facilities. Number of increased consolidated facilities Schedule of Related Party Transactions, by Related Party [Table] Related Party Transaction [Line Items] Related Party [Axis] Related Party [Domain] Interest Paid, Discontinued Operations Interest paid - discontinued operations Income Taxes Paid Discontinued Operations Income taxes paid - discontinued operations Income taxes paid discontinued operations. Schedule of Comprehensive Income (Loss) [Table Text Block] Condensed Consolidating Statements of Comprehensive Income Investments in Surgery Centers Included in Discontinued Operations Investments in surgery centers Investments in surgery centers included in discontinued operations that were designated as held for sale. Line of Credit Facility, Remaining Borrowing Capacity Amount available for borrowing Line of Credit Facility, Amount Outstanding Net amount on outstanding letters of credit Other Operating Expense [Member] Other operating expenses [Member] Warrant [Member] Warrants [Member] Loss On Early Retirement Of Debt Loss on early retirement of debt. Loss on early retirement of debt Available-for-sale Securities, Current Available for sale securities (Note 8) Available for sale securities Redeemable Noncontrolling Interest, Equity, Carrying Amount Noncontrolling interests - redeemable (Note 4) Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Comprehensive income Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest Income from continuing operations before income taxes Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Gain Gain on adjusting the carrying value of existing ownership to fair value Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Changes, Sale of Interest by Parent Sale of equity interests in various consolidated subsidiaries Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Changes, Purchase of Interest by Parent Purchase of equity interest in various consolidated subsidiaries Investments in unconsolidated affiliates and business combination Text Block Investments in Unconsolidated Affiliates and Business Combination Investments in unconsolidated affiliates and business combination. Equity Based Compensation Included in Statements of Operations Classified by Type of Award [Table Text Block] Equity-based compensation included in statements of income, classified by type of award Equity-based compensation included in Statements of Income, classified by type of award table text block Maximum Value of New Debt Arrangement Maximum value of new debt arrangement The total value of the new financing arrangement, which includes term loans and a line of credit. Outstanding Balance of Credit Facility Outstanding amount of amended credit facility The total amount outstanding at period end under the credit facility, which includes term loan balances and a line of credit balance. Subordinated Debt Senior notes Secured Debt Credit facility maximum borrowings capacity Credit Facility Percentage of Periodic Principal Payment Quarterly principal payments percentage Percentage of quarterly principal payments required Long-term Debt Aggregate carrying amount of long-term debt Guarantor Obligations, Maximum Exposure, Undiscounted Maximum aggregate payments for guarantees of indebtedness and other obligations Debt Instrument Year Debt instrument year. Debt Instrument Year Number of Subsidiaries for Consolidation Operations not control with voting rights entities Number of subsidiaries for consolidation. Derivatives (Textual) [Abstract] Derivatives. Derivatives (Textual) [Abstract] Available-for-sale Securities, Change in Net Unrealized Holding Gain (Loss), Net of Tax Unrealized gain on available-for-sale securities, net of tax Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax Unrealized gain on available-for-sale securities, net of tax Spin Off of Uk Subsidiary Spin Off of U.K. subsidiary Spin off of UK subsidiary. Noncontrolling Interest, Ownership Percentage by Parent Percentage of ownership in domestic subsidiaries Non Affiliated Entity [Member] Non Affiliated Entity [Member] Non affiliated entity. Guarantor Obligations, Current Carrying Value Long-term liabilities related to guarantees Effective Date Three [Member] Sep-2012 [Member] Effective date three. Facility Location Three [Member] New Jersey [Member] Facility location three. Line of Credit Facility, Date of First Required Payment Notes payable interest rate commencing date Number Of Surgical Facilities Number of surgical facilities Number of surgical facilities. Schedule of Increase Decrease in Equity from Net Income Loss Attributable to Parent and Transfers to Noncontrolling Interests [Table Text Block] Schedule of changes in equity from net income loss attributable to USPI and transfers to noncotrolling interests Schedule of increase decrease in equity from net income loss attributable to parent and transfers to noncontrolling interests.