Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Deferred Tax Asset [Domain] Deferred Tax Asset [Domain] Weighted average shares and dilutive securities outstanding (in thousands): Weighted Average Number of Shares Outstanding, Diluted [Abstract] Trading Arrangement: Trading Arrangement [Axis] Maximum Maximum [Member] Statistical Measurement [Domain] Statistical Measurement [Domain] Income Tax Jurisdiction, Domestic Federal Income Tax Jurisdiction, Domestic Federal [Member] Title of 12(b) Security Title of 12(b) Security Net income available to Tenet Healthcare Corporation common shareholders for diluted earnings per share Net Income (Loss) Available to Common Stockholders, Diluted Document Fiscal Year Focus Document Fiscal Year Focus Revenue, remaining performance obligation, expected timing of satisfaction, period Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period Other restructuring costs Other Restructuring Costs Acquisition costs Business Combination, Acquisition-Related Cost, Expense Schedule of Fair Value Assets on a Nonrecurring Basis Fair Value Measurements, Nonrecurring [Table Text Block] Adjustment to Compensation, Amount Adjustment to Compensation Amount Number of RSUs Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Segment Reporting [Abstract] Segment Reporting [Abstract] Schedule of Estimated Future Amortization of Intangibles with Finite Useful Lives Intangible Asset, Finite-Lived, and Capitalized Cost, Software to be Sold, Leased, or Marketed, Estimated Amortization Expense [Table Text Block] Net losses (gains) on sales, consolidation and deconsolidation of facilities Net Losses on Sale, Consolidation, And Deconsolidation Of Facilities The amount of net losses for the period due to sales, consolidation and deconsolidation of facilities. Common stock, $0.05 par value; authorized 262,500 shares; 159,187 shares issued at June 30, 2026 and 158,612 shares issued at December 31, 2025 Common Stock, Value, Issued Increase in additional paid-in capital balance Adjustments to Additional Paid in Capital, Increase in Carrying Amount of Redeemable Preferred Stock Uninsured Health Care, Patient Service - Self-pay [Member] Health Care, Patient Service - Self-pay [Member] Taxes paid related to net share settlement, net of proceeds from shares issued under stock-based compensation plans Payment, Tax Withholding, Share-Based Payment Arrangement Accrued compensation and benefits Employee-related Liabilities, Current Schedule of Long-Term Debt Schedule of Long-Term Debt Instruments [Table Text Block] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis] State and local income taxes, net of federal income tax effect Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent Nature of Expense [Axis] Nature of Expense [Axis] Balance at Beginning of Period Balance at End of Period Loss Contingency Accrual Maximum potential amount of future payments under guarantees Guarantor Obligations, Maximum Exposure, Undiscounted Credit Agreement Line of Credit [Member] Restatement Determination Date Restatement Determination Date Tax Jurisdiction of Domicile [Extensible Enumeration] Tax Jurisdiction of Domicile [Extensible Enumeration] Changes in valuation allowances Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount Schedule of Reconciliation Between Reported Income Tax Expense and Income Taxes Calculated by the Statutory Federal Income Tax Rate Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Measurement Frequency [Axis] Measurement Frequency [Axis] Proceeds from sales of facilities and other assets Proceeds from Divestiture of Businesses Effect of dilutive instruments Dilutive Securities, Effect on Basic Earnings Per Share ACCOUNTS RECEIVABLE AND CONTRACT BALANCES Financing Receivables [Text Block] Amendment Flag Amendment Flag Goodwill [Line Items] Goodwill [Line Items] Current liabilities: Liabilities, Current [Abstract] Average Price Paid per Share (in dollars per shares) Shares Acquired, Average Cost Per Share Entity Common Stock, Shares Outstanding (in shares) Entity Common Stock, Shares Outstanding Other Geographic Areas Other Geographic Areas [Member] Other Geographic Areas Percent Effective Income Tax Rate Reconciliation, Percent [Abstract] Property and equipment Business Combination, Recognized Asset Acquired, Property, Plant, and Equipment Loss Contingencies [Table] Loss Contingencies [Table] Purchases of noncontrolling interests Payments to Noncontrolling Interests Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Redeemable Noncontrolling Interests Redeemable Noncontrolling Interest [Member] Represents information pertaining to redeemable noncontrolling interests. Entity Address, State or Province Entity Address, State or Province PEO Total Compensation Amount PEO Total Compensation Amount Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Capital expenditures Segment Reporting, Long-Lived Asset, Expenditure for Addition Exchange [Domain] Exchange [Domain] Catastrophic Event [Domain] Catastrophic Event [Domain] Other intangible assets, at cost, less accumulated amortization ($1,437 at June 30, 2026 and $1,328 at December 31, 2025) Net Book Value Intangible Asset, Excluding Goodwill, after Accumulated Amortization Unvested at the beginning of the period (in shares) Unvested at the end of the period (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number Share Repurchase Program [Domain] Share Repurchase Program [Domain] Basic (in shares) Net income available to Tenet Healthcare Corporation common shareholders for basic earnings per share (in shares) Weighted Average Number of Shares Outstanding, Basic Contract assets Balance at beginning of period Balance at end of period Contract with Customer, Asset, after Allowance for Credit Loss, Current Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Loss Contingencies Loss Contingencies [Line Items] Total current liabilities  Liabilities, Current Charity care patients Charity Care Patients [Member] Represents charity care patients. Increase (decrease) Increase (decrease) Increase (Decrease) In Contract with Customer, Receivable Increase (Decrease) In Contract with Customer, Receivable Reconciliation of Adjusted EBITDA: Adjusted Segment EBITDA [Abstract] Professional and general liability reserves Self Insurance Reserve, Noncurrent Entity Address, City or Town Entity Address, City or Town Claims, Lawsuits, and Regulatory Proceedings Pending Litigation [Member] 6.125% due 2030 Six Point One Two Five Percent Senior Secured First Lien Note, Due 2030 [Member] Six Point One Two Five Percent Senior Secured First Lien Note, Due 2030 Awards granted in the period (in shares) Granted (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period Income before income taxes Income (Loss), Including Portion Attributable to Noncontrolling Interest, before Tax Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Receivables [Abstract] Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Final purchase price allocations Business Combination, Consideration Transferred [Abstract] Document Information [Line Items] Document Information [Line Items] Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Vested (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period Class of Stock [Axis] Class of Stock [Axis] Net Book Value Intangible Asset, Finite-Lived, after Accumulated Amortization Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Net income available to Tenet Healthcare Corporation common shareholders Net Income (Loss) Available to Common Stockholders, Basic Hospital Operations Hospital Operations: Hospital Operations [Member] Hospital Operations Level 2 Significant Other Observable Inputs (Level 2) Fair Value, Inputs, Level 2 [Member] Receivable [Domain] Receivable [Domain] Intangible assets, accumulated amortization Accumulated Amortization Intangible Asset, Finite-Lived, Accumulated Amortization Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] Revolving credit facility, maximum borrowing capacity (up to) Line of Credit Facility, Maximum Borrowing Capacity Total other comprehensive income, net of tax Other comprehensive income Other Comprehensive Income (Loss), Net of Tax Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Schedule of Reconciliation of Assets by Reportable Segment to Consolidated Assets Segment Reporting, Reconciliation of Asset by Segment to Consolidated [Table Text Block] United States UNITED STATES Schedule of Long-term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] Class of Treasury Stock [Table] Class of Treasury Stock [Table] Revenue from contract termination Revenue from contract termination Gain (Loss) on Contract Termination Accrued property and equipment purchases for items received but not yet paid Capital Expenditures Incurred but Not yet Paid Increase (decrease) Increase (Decrease) in Contract with Customer, Liability Noncontrolling Interests Noncontrolling Interest [Member] Other comprehensive income: Other Comprehensive Income (Loss), before Tax [Abstract] Malpractice expense Malpractice Loss Contingency, Claims Incurred, Net REDEEMABLE NONCONTROLLING INTERESTS IN EQUITY OF CONSOLIDATED SUBSIDIARIES Noncontrolling Interest Disclosure [Text Block] Other comprehensive income before income taxes Other Comprehensive Income (Loss), before Tax 2024 Share Repurchase Program 2024 Share Repurchase Program [Member] 2023 Share Repurchase Program GUARANTEES Guarantor Obligations [Line Items] Current liabilities Business Combination, Recognized Liability Assumed, Liability, Current Medicaid Health Care, Patient Service - Medicaid [Member] Health Care, Patient Service - Medicaid [Member] Document Period End Date Document Period End Date Changes in cash from operating assets and liabilities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract] Net cash used in investing activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] Unrecognized tax benefits Unrecognized Tax Benefits Long term debt, face amount Debt Instrument, Face Amount Increase (decrease) Increase (Decrease) in Contract with Customer, Asset Previously held investments in unconsolidated affiliates Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Previously Held Investments in Unconsolidated Affiliates Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Previously Held Investments in Unconsolidated Affiliates EQUITY Equity [Text Block] Security Exchange Name Security Exchange Name Schedule of Reconciliation of Other Significant Reconciling Items From Segments to Consolidated Segment Reporting, Reconciliation of Other Item by Segment to Consolidated [Table Text Block] Common stock in treasury, at cost, 78,680 shares at June 30, 2026 and 71,660 shares at December 31, 2025 Treasury Stock, Common, Value Long-lived assets held for sale Long-Lived Asset, Held-for-Sale, Fair Value Disclosure Increase (decrease) in deferred tax asset valuation Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount Vest Over Period From One To Four Years Vest Over Period From One To Four Years [Member] Vest Over Period From One To Four Years Equity Method Investment, Nonconsolidated Investee [Axis] Equity Method Investment, Nonconsolidated Investee [Axis] Vest Immediately Vest Immediately [Member] Vest Immediately Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Entity Shell Company Entity Shell Company Consolidation Items [Domain] Consolidation Items [Domain] Guaranteed Investees of Third Parties Guaranteed Investees Of Third Parties [Member] Represents the guarantees of indebtedness and other obligations to our investees to third parties Cash and Cash Equivalents Cash and Cash Equivalents [Line Items] Accrued interest payable Interest Payable, Current Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] EARNINGS PER COMMON SHARE Earnings Per Share [Text Block] Name Outstanding Recovery, Individual Name Earnings available to Tenet Healthcare Corporation common shareholders: Earnings Per Share [Abstract] Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] Document Fiscal Period Focus Document Fiscal Period Focus Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Redeemable Noncontrolling Interest, by Legal Entity [Table] Redeemable Noncontrolling Interest [Table] 5.500% due 2032 Five Point Five Zero Percent Senior Secured First Lien Note, Due 2032 [Member] Five Point Five Zero Percent Senior Secured First Lien Note, Due 2032 Total liabilities  Liabilities Trading Symbol Trading Symbol Geographical [Domain] Geographical [Domain] Other intangible assets with indefinite lives Intangible Asset, Excluding Goodwill, Indefinite-Lived Purchases of property and equipment Payments to Acquire Property, Plant, and Equipment Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year [Member] Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Consideration adjustment Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Consideration Transferred Income tax payable Accrued Income Taxes, Current Schedule of Preliminary Purchase Price Allocation Business Combination, Recognized Asset Acquired and Liability Assumed [Table Text Block] Company Selected Measure Name Company Selected Measure Name Litigation and investigation costs Litigation and Investigation Costs Gain (Loss) from Litigation Settlement Distributions paid to noncontrolling interests Payments of Ordinary Dividends, Noncontrolling Interest Credit Agreement Credit Agreement [Member] Credit Agreement Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] Amortization of debt discount and debt issuance costs Amortization of Debt Issuance Costs and Discounts Current portion of note receivable Financing Receivable, after Allowance for Credit Loss, Current Other Loss Contingency Accrual, Other Loss Contingency Accrual, Other Letter of Credit Facility Letter Of Credit Facility [Member] Letter Of Credit Facility Payments for redemption Payments to Acquire Interest in Subsidiaries and Affiliates Ownership percentage of subsidiary Subsidiary, Ownership Percentage, Parent Carrying amount Long-Term Debt, Gross Book overdrafts classified as accounts payable Bank Overdrafts Changes in prior year unrecognized tax benefits Effective Income Tax Rate Reconciliation, Tax Contingency, Percent Net patient service revenues Health Care, Patient Service [Member] Credit Facility [Domain] Credit Facility [Domain] Compensation Amount Outstanding Recovery Compensation Amount Amortization expense Capitalized Contract Cost, Amortization Individual: Individual [Axis] Diluted (in shares) Net income available to Tenet Healthcare Corporation common shareholders for diluted earnings per share (in shares) Weighted Average Number of Shares Outstanding, Diluted Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Accounts receivable and allowance for doubtful accounts Accounts, Notes, Loans and Financing Receivable [Line Items] Amortization of net actuarial loss included in other non-operating income, net Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Amortization of Net Actuarial Gain (Loss) Arising During Period, before Tax Amount before tax of amortization of net actuarial gain (loss) that has been recognized in other non-operating income (expense). Entity Emerging Growth Company Entity Emerging Growth Company Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] Schedule of Other Current Assets Schedule of Other Current Assets [Table Text Block] Defined benefit plan obligations Liability, Defined Benefit Plan, Noncurrent Underlying Security Market Price Change Underlying Security Market Price Change, Percent Amount of common stock authorized to be repurchased Share Repurchase Program, Authorized, Additional Amount Share Repurchase Program, Authorized, Additional Amount Property and equipment, at cost, less accumulated depreciation and amortization ($6,924 at June 30, 2026 and $6,680 at December 31, 2025) Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, after Accumulated Depreciation and Amortization California's Provider Fee Program California Provider Fee Program [Member] Represents activity related to California's provider fee program. Vesting percentage Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage Number of ambulatory surgery centers Number of Ambulatory Surgery Centers Number of Ambulatory Surgery Centers Stock-based compensation tax benefit Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-Based Payment Arrangement, Percent Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Amount available for borrowing under revolving credit facility Line of Credit Facility, Current Borrowing Capacity Continuing Operations Continuing Operations [Member] Revenue from Contract with Customer [Abstract] Revenue from Contract with Customer [Abstract] Effect of dilutive instruments (in shares) Weighted Average Number of Shares Outstanding, Diluted, Adjustment Non-patient receivables Other Receivables Other Other Other Intangible Assets [Member] GUARANTEES Guarantees [Text Block] Property and equipment, accumulated depreciation and amortization Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, Accumulated Depreciation and Amortization Number of acute care and specialty hospitals operated Number Of Hospitals Operated Number Of Hospitals Operated 6.750% due 2031 Six Point Seven Five Zero Percent Senior Secured First Lien Note, Due 2031 [Member] Six Point Seven Five Zero Percent Senior Secured First Lien Note, Due 2031 Award Timing Predetermined Award Timing Predetermined [Flag] Treasury Stock Treasury Stock, Common [Member] Standby letters of credit outstanding (less than) Letters of Credit Outstanding, Amount Contract Liabilities – Current Deferred Revenue Change In Contract With Customer, Liability, Net, Current [Roll Forward] Change In Contract With Customer, Liability, Net, Current [Roll Forward] Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Total long-term debt Debt and Lease Obligation Quoted Prices in Active Markets for Identical Assets (Level 1) Fair Value, Inputs, Level 1 [Member] Non-cancellable operating leases liability entered into Operating Lease, Right-Of-Use Assets, Acquired Operating Lease, Right-Of-Use Assets, Acquired Income tax expense Effective Income Tax Rate Reconciliation, Percent Payments for restructuring charges, acquisition-related costs, and litigation costs and settlements Payments for Restructuring and Litigation Costs Payments against reserves for restructuring charges and litigation costs, which may include attorneys' fees and other litigation costs. Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Indefinite-lived Intangible Assets, Major Class Name [Domain] Intangible Asset, Indefinite-Lived, Class [Domain] Litigation Status [Domain] Litigation Status [Domain] Redeemable Noncontrolling Interest [Line Items] Redeemable Noncontrolling Interest [Line Items] Redeemable Noncontrolling Interest [Line Items] Unvested at the beginning of the period (in dollars per share) Unvested at the end of the period (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value All Executive Categories All Executive Categories [Member] Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Performance Based Restricted Stock Unit Performance Based Restricted Stock Unit [Member] Previously Awarded Performance Based Restricted Stock Unit Redeemable noncontrolling interests in equity of consolidated subsidiaries Redeemable Noncontrolling Interest, Equity, Carrying Amount Floods Flood [Member] Uninsured patients Self-Pay Patients [Member] Self-Pay Patients [Member] Vesting [Domain] Vesting [Domain] Scenario [Domain] Scenario [Domain] Schedule of Estimated Costs for Charity Care and Self-Pay Patients Schedule of Estimated Cost for Charity Care [Table Text Block] Tabular disclosure of the estimated costs for providing charity care to patients. Guarantor Obligations, Nature [Axis] Guarantor Obligations, Nature [Axis] Contracts Contracts Contract-Based Intangible Assets [Member] Income taxes Increase (Decrease) in Income Taxes Receivable Schedule of Reconcile of Numerators and Denominators of Our Basic and Diluted Earnings Per Common Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Risk-free interest rate, maximum Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Maximum Noncontrolling Interest [Line Items] Noncontrolling Interest [Line Items] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Current portion of long-term debt Less: Current portion Long-Term Debt and Lease Obligation, Current SEGMENT INFORMATION Segment Reporting [Text Block] Minimum Minimum [Member] Liability for the fair value of guarantees Guarantees, Fair Value Disclosure Expiration Date Trading Arrangement Expiration Date Schedule of Significant Inputs used in Valuation of RSUs Schedule of Share-based Payment Award, Awards Other Than Options, Valuation Assumptions [Table Text Block] Schedule of Share-based Payment Award, Awards Other Than Options, Valuation Assumptions Schedule of Disaggregation of Operating Revenues Less Provision for Doubtful Accounts and Implicit Price Concessions Disaggregation of Revenue [Table Text Block] Weighted Average Shares (Denominator) Weighted Average Number of Shares Outstanding Reconciliation [Abstract] Net income available to Tenet Healthcare Corporation common shareholders for diluted earnings per share (in dollars per share) Income (Loss) from Continuing Operations, Per Diluted Share Net income available to Tenet Healthcare Corporation common shareholders for basic earnings per share (in dollars per share) Income (Loss) from Continuing Operations, Per Basic Share Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Total equity  Balances, beginning of period Balances, end of period Total nonredeemable noncontrolling interests Equity, Including Portion Attributable to Noncontrolling Interest Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table [Member] Disposal Group, Including Discontinued Operations [Line Items] Disposal Group, Including Discontinued Operations [Line Items] Business Combination [Line Items] Business Combination [Line Items] Exercisable at the end of the period (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Number Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Common stock, authorized shares (in shares) Common Stock, Shares Authorized Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] Income and Revenue Collection Guarantee Income And Revenue Collection Guarantee [Member] Represents the income and revenue collection guarantees. Schedule of Restricted Stock Unit Activity Share-Based Payment Arrangement, Restricted Stock Unit, Activity [Table Text Block] Exercise Price Award Exercise Price Cash flows from investing activities: Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] Recurring Fair Value, Recurring [Member] Litigation Status [Axis] Litigation Status [Axis] Schedule of Equity Method Investments [Line Items] Schedule of Equity Method Investments [Line Items] Segment Reporting [Line Items] Segment Reporting [Line Items] Amount of common stock authorized to be repurchased Share Repurchase Program, Authorized, Amount Document Quarterly Report Document Quarterly Report Disposal Groups, Including Discontinued Operations [Table] Disposal Groups, Including Discontinued Operations [Table] Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested [Member] Segments [Domain] Segments [Domain] Other revenues Other Revenues [Member] Other Revenues [Member] Interest and penalties related to accrued liabilities for uncertain tax positions, recognized Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense LONG-TERM DEBT Debt Disclosure [Text Block] Scenario [Axis] Scenario [Axis] Stock-based compensation expense, tax benefit and issuance of common stock Shares Issued And Share-Based Compensation Expense, Value, Share-Based Payment Arrangement, After Forfeiture Shares Issued And Share-Based Compensation Expense, Value, Share-Based Payment Arrangement, After Forfeiture Operating Activities [Domain] Operating Activities [Domain] Unamortized issue costs and note discounts Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] Long-term operating lease assets Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed, Long-Term Operating Lease Assets Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed, Long-Term Operating Lease Assets Equity Component [Domain] Equity Component [Domain] Business Combination [Table] Business Combination [Table] PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Accrued property and equipment purchases for items received but not yet paid, accounts payable Accounts Payable, Trade, Current Business Combination, Asset Acquisition, Transaction between Entities under Common Control, and Joint Venture Formation [Abstract] Insurance coverage Insurance Coverage [Line Items] Patient accounts receivable Accounts Receivable, before Allowance for Credit Loss, Current Adoption Date Trading Arrangement Adoption Date Proceeds from sales of marketable securities and long-term investments Proceeds from Sale of Marketable Securities Long Term Investments and Other Assets The cash inflow associated with the aggregate amount received by the entity through sale or maturity of marketable securities (trading, held-to-maturity, or available-for-sale) during the period. Sale of long term investments and the sale of other assets not otherwise defined in the taxonomy. Stated interest rate, percentage Debt Instrument, Interest Rate, Stated Percentage Counterparty Name [Domain] Counterparty Name [Domain] Total shareholders’ equity Equity, Attributable to Parent Acute Care Hospitals and Related Outpatient Facilities Acute Care Hospitals And Related Outpatient Facilities [Member] Acute Care Hospitals And Related Outpatient Facilities [Member] Catholic Health Initiatives Catholic Health Initiatives [Member] Catholic Health Initiatives Entity Listings, Exchange [Axis] Entity Listings, Exchange [Axis] Other long-term assets Business Combination, Recognized Asset Acquired, Other Asset, Noncurrent Restructuring Type [Axis] Restructuring Type [Axis] Insurance, annual limit Insurance, Annual Limit Insurance, Annual Limit ASSETS Assets [Abstract] Title Trading Arrangement, Individual Title Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Medicare Medicare [Member] Represents the information about Medicare services. Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Finance leases, mortgages and other notes Finance Leases And Mortgage Notes Finance Leases And Mortgage Notes Contract Assets – Unbilled Revenue Change In Contract With Customer, Asset, Net, Noncurrent [Roll Forward] Change In Contract With Customer, Asset, Net, Noncurrent [Roll Forward] Nonrecurring Fair Value, Nonrecurring [Member] Insider Trading Policies and Procedures [Line Items] Decrease in goodwill Goodwill, Measurement Period Adjustment Other items, net Proceeds from (Payment for) Other Financing Activity Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] California Earthquakes And Named Windstorms California Earthquakes And Named Windstorms [Member] California Earthquakes And Named Windstorms Deferred income tax expense Deferred Income Tax Expense (Benefit) Other Effective Income Tax Rate Reconciliation, Nondeductible Expense, Other, Amount Repayments of borrowings Repayments of Debt Business Combination [Domain] Business Combination [Domain] Type of Restructuring [Domain] Type of Restructuring [Domain] Senior secured credit facility due 2027 Letter of Credit [Member] Amount received Revenue Cycle Management Services Agreement, Amount Received Revenue Cycle Management Services Agreement, Amount Received CLAIMS AND LAWSUITS Commitments and Contingencies Disclosure [Text Block] Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Restricted Stock Units Restricted Stock Units (RSUs) [Member] Schedule of Changes in the Carrying Amount of Goodwill Goodwill [Table Text Block] Entity Central Index Key Entity Central Index Key New Madrid Fault Earthquakes New Madrid Fault Earthquakes [Member] New Madrid Fault Earthquakes [Member] All Adjustments to Compensation All Adjustments to Compensation [Member] Business Combination [Axis] Business Combination [Axis] Schedule of Guarantor Obligations [Table] Guarantor Obligation [Table] Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year [Member] Net cash provided by operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Tax expense at statutory federal rate Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount Income Statement [Abstract] Income Statement [Abstract] Shareholders’ equity: Equity, Attributable to Parent [Abstract] Document Transition Report Document Transition Report Ownership [Axis] Ownership [Axis] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Operating expenses: Operating Expenses [Abstract] Deferred income taxes Deferred Income Tax Assets, Net United Surgical Partners International United Surgical Partners International [Member] Represents information pertaining to United Surgical Partners International, Inc., acquired by the entity. Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] Investee results reflected (percent) Percentage Investee Results Reflected Represents the percentage of the investee's results accounted for under the equity method Amount Income Tax Expense (Benefit), Effective Income Tax Rate Reconciliation, Amount [Abstract] Schedule of Other Intangible Assets Intangible Asset, Finite-Lived [Table Text Block] Investments and other assets Long-Term Investments and Receivables, Net City Area Code City Area Code Insurance Coverage [Table] Insurance Coverage [Table] Insurance coverage used by the entity to manage financial risk. Accumulated Other Comprehensive Loss AOCI Attributable to Parent [Member] Senior secured credit facility due 2027 Senior Secured Credit Facility Due 2027 [Member] Senior Secured Credit Facility Due 2027 Document Information [Table] Document Information [Table] All Individuals All Individuals [Member] Vest Over Period From One To Three Years Vest Over Period From One To Three Years [Member] Vest Over Period From One To Three Years Schedule of Reconciliations of Legal Settlements and Related Costs Schedule of Loss Contingencies by Contingency [Table Text Block] Name Forgone Recovery, Individual Name Loss Contingency Accrual [Roll Forward] Loss Contingency Accrual [Roll Forward] Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Weighted Average Grant Date Fair  Value Per RSU Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Global Business Center in the Republic of Philippines Global Business Center In The Republic Of Philippines [Member] Global Business Center In The Republic Of Philippines [Member] Other Catastrophic Events Other Catastrophic Events [Member] Other catastrophic events including but not limited to fires and other perils. Balance at beginning of period Balance at end of period Contract with Customer, Receivable, after Allowance for Credit Loss, Current Total assets  Assets Assets Entity [Domain] Entity [Domain] Effective Income Tax Rate Reconciliation [Line Items] Effective Income Tax Rate Reconciliation [Line Items] Long-term Contract with Customer Long-Term Contract with Customer [Member] Number of surgical hospitals operated by subsidiaries Number Of Surgical Hospitals Operated By Subsidiaries Number Of Surgical Hospitals Operated By Subsidiaries Equity Method Investment, Nonconsolidated Investee [Domain] Equity Method Investment, Nonconsolidated Investee [Domain] Operating Segments Operating Segments [Member] Interest expense Interest Expense, Nonoperating EMPLOYEE BENEFIT PLANS Share-Based Payment Arrangement [Text Block] Contract with Customer, Duration [Domain] Contract with Customer, Duration [Domain] PEO PEO [Member] New York Stock Exchange NEW YORK STOCK EXCHANGE, INC. [Member] Self insurance reserve Self Insurance Reserve Long-Term Receivables Change In Contract With Customer, Asset, Noncurrent [Roll Forward] Change In Contract With Customer, Asset, Noncurrent Stock-based compensation costs, pretax Share-Based Payment Arrangement, Expense 6.875% due 2031 Six Point Eight Seven Five Percent Senior Unsecured Note, Due 2031 [Member] Six Point Eight Seven Five Percent Senior Unsecured Note, Due 2031 Series of Individual Business Acquisitions Business Combination, Series of Individually Immaterial Business Combinations [Member] Other long-term liabilities Other Liabilities, Noncurrent Goodwill Goodwill at beginning of period, net of accumulated impairment losses Goodwill at end of period, net of accumulated impairment losses Goodwill Goodwill Earthquake Earthquake [Member] Revenue cycle management services agreement period for early termination payments Revenue Cycle Management Services Agreement, Period For Early Termination Payments Revenue Cycle Management Services Agreement, Period For Early Termination Payments Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Cash and Cash Equivalents Cash and Cash Equivalents, Policy [Policy Text Block] Noncurrent portion of note receivable Financing Receivable, after Allowance for Credit Loss, Noncurrent Tax benefit attributable to noncontrolling interests Effective Income Tax Rate Reconciliation, Noncontrolling Interest Income (Loss), Amount Granted (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Unrealized gain (loss) on debt securities held as available-for-sale OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment and Tax Changes in prior year unrecognized tax benefits Effective Income Tax Rate Reconciliation, Tax Contingency, Amount Amount of revenue recognized included in current deferred revenue liability Contract with Customer, Liability, Revenue Recognized Retained Earnings Retained Earnings [Member] Revolving Credit Facility Revolving Credit Facility [Member] Forfeited (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Capitalized software costs Software, In-Development, Internally Developed, and Purchased [Member] Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Balances, beginning of period (in shares) Balances, end of period (in shares) Common Stock, Shares, Outstanding Changes in Shareholders' Equity Increase (Decrease) in Stockholders' Equity [Roll Forward] Award Timing Disclosures [Line Items] Diluted earnings per share (in dollars per share) Earnings Per Share, Diluted Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Entity Current Reporting Status Entity Current Reporting Status Net cash used in financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Expected volatility, maximum Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Maximum Interim Period, Costs Not Allocable [Domain] Interim Period, Costs Not Allocable [Domain] Total Shareholder Return Amount Total Shareholder Return Amount Net gains on sales, consolidation and deconsolidation of facilities Net Gain (Loss) On Sale, Consolidation, And Deconsolidation Of Facilities The amount of net gain (loss) for the period due to sales, consolidation and deconsolidation of facilities. Accounts Receivable Additional Disclosures [Abstract] Accounts Receivable Additional Disclosures [Abstract] Amortization expense Intangible Asset, Finite-Lived, Amortization Expense Cost reports and settlements receivable (payable), net of valuation allowances Net Cost Report Settlements Receivable (Payable) And Valuation Allowances Net cost report settlements receivable (payable) and valuation allowances. Stockholders' Equity Note [Abstract] Stockholders' Equity Note [Abstract] Intangible Asset, Finite-Lived [Line Items] Intangible Asset, Finite-Lived [Line Items] Ownership [Domain] Ownership [Domain] Share Repurchase Program Share Repurchase Program [Member] Share Repurchase Program Adjustments to reconcile net income to net cash provided by operating activities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract] Number of outpatient centers operated Number Of Outpatient Centers Recorded Not Using Equity Method Represents the number of outpatient centers in which they are not recorded using the equity method of accounting Insurance, per occurrence limit Insurance, Per Occurrence Limit Insurance, Per Occurrence Limit Share-based Payment Arrangement [Abstract] Share-Based Payment Arrangement [Abstract] Cash flows from financing activities: Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Net operating revenues  Net operating revenues Revenue from Contract with Customer, Excluding Assessed Tax Schedule of Changes In Consolidated Equity Schedule of Stockholders Equity [Table Text Block] Contract Termination Contract Termination [Member] Assets held for sale Disposal Group, Including Discontinued Operation, Assets, Current Schedule of Equity Method Investments Equity Method Investments [Table Text Block] Contract Liabilities – Long-Term Deferred Revenue Change In Contract With Customer, Liability, Net, Noncurrent [Roll Forward] Change In Contract With Customer, Liability, Net, Noncurrent [Roll Forward] Net Income Available to Common Shareholders (Numerator) Net Income (Loss) Available to Common Stockholders, Basic [Abstract] Number of outpatient facilities operated Number Of Outpatient Facilities Operated Number Of Outpatient Facilities Operated Repurchases of common stock Stock Repurchased During Period, Value Revenue cycle management services agreement amount to be received Revenue Cycle Management Services Agreement, Amount To Be Received Revenue Cycle Management Services Agreement, Amount To Be Received Noncontrolling interests Business Combination, Acquisition of Less than 100 Percent, Noncontrolling Interest, Fair Value Intangible Asset, Finite-Lived, Class [Axis] Intangible Asset, Finite-Lived, Class [Axis] Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] Underlying Securities Award Underlying Securities Amount Less: Comprehensive income available to noncontrolling interests Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Gross Carrying Amount Intangible Asset, Excluding Goodwill, before Accumulated Amortization NET OPERATING REVENUES Revenue from Contract with Customer [Text Block] Subsegments [Domain] Subsegments [Domain] Prepaid expenses Prepaid Expense, Current Repayments of advances from managed care payers Repayments Of Advances From Managed Care Payers Repayments Of Advances From Managed Care Payers Subsegments [Axis] Subsegments [Axis] Other items, net Payment for (Proceeds from) Other Investing Activity Impairment and restructuring charges, and acquisition-related costs Impairment and restructuring charges, and acquisition-related costs Impairment and restructuring charges, and acquisition-related costs Restructuring Settlement Impairment Provisions and Acquisition Cost The aggregate amount provided for estimated restructuring charges, remediation costs, and asset impairment loss during an accounting period and acquisition-related costs. Generally, these items are either unusual or infrequent, but not both (in which case they would be extraordinary items). State and local income taxes, net of federal income tax effect Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount Risk-free interest rate, minimum Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Minimum Segment Reporting [Table] Segment Reporting [Table] Net income Net income available to redeemable noncontrolling interests Temporary Equity, Net Income Other Effective Income Tax Rate Reconciliation, Nondeductible Expense, Other, Percent Schedule of Equity Method Investments [Table] Equity Method Investment [Table] Guarantees [Abstract] Guarantees [Abstract] Other current assets Total other current assets Other Assets, Current Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] All Trading Arrangements All Trading Arrangements [Member] Other Performance Measure, Amount Other Performance Measure, Amount Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Operating income Operating Income (Loss) Performance obligations Revenue, Remaining Performance Obligation, Amount Current Fiscal Year End Date Current Fiscal Year End Date Valuation Allowance by Deferred Tax Asset [Axis] Valuation Allowance by Deferred Tax Asset [Axis] Proceeds from borrowings Proceeds from Issuance of Debt Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Contract with Customer, Duration [Axis] Contract with Customer, Duration [Axis] Schedule of Changes in Redeemable Noncontrolling Interests in Equity of Consolidated Subsidiaries Nonredeemable Noncontrolling Interest [Table Text Block] Nonredeemable Noncontrolling Interest ACQUISITIONS Business Combination [Text Block] Repurchases of common stock (in shares) Stock Repurchased During Period, Shares CommonSpirit CommonSpirit [Member] CommonSpirit Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year [Member] Entity File Number Entity File Number Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Supplies Supplies Expense Distributions paid to noncontrolling interests Distributions paid to noncontrolling interests Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders Vesting Contingent On Performance Goals Performance Based Vesting, Three Year Period, Zero to Two Hundred Fifty Percent [Member] Performance Based Vesting, Three Year Period, Zero to Two Hundred Fifty Percent Current Receivables Change In Contract With Customer, Asset, Net, Current [Roll Forward] Change In Contract With Customer, Asset, Net, Current [Roll Forward] Impairment charges Asset, Impairment Loss Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Restructuring charges Restructuring Costs Common stock, shares issued (in shares) Common Stock, Shares, Issued Measure: Measure [Axis] Asset held-for-sale Asset, Held-for-Sale, Not Part of Disposal Group Short-term Contract with Customer Short-Term Contract with Customer [Member] Common stock in treasury (in shares) Treasury Stock, Common, Shares Equity in earnings of unconsolidated affiliates, net of distributions received Income (Loss) from Equity Method Investments, Net of Dividends or Distributions Current assets Business Combination, Recognized Asset Acquired, Asset, Current Revenue from other sources Health Care - Other Sources [Member] Health Care - Other Sources [Member] Purchases (sales) of businesses and noncontrolling interests, net Adjustments to Additional Paid-In Capital, Purchase (Sale) of Noncontrolling Interests Represents the net (decrease) increase in additional paid-in capital resulting from the purchase and sales of businesses and noncontrolling interests. Equity Components [Axis] Equity Components [Axis] Other operating expenses, net Other Cost and Expense, Operating Accounts receivable Increase (Decrease) in Accounts Receivable Product and Service [Domain] Product and Service [Domain] Unamortized deferred contract setup costs Capitalized Contract Cost, Net Income tax payments, net Income Tax Paid, after Refund Received California CALIFORNIA Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Net losses (gains) on sales, consolidation and deconsolidation of facilities Net gains (Losses) on Sale, Consolidation, And Deconsolidation Of Facilities Net gains (Losses) on Sale, Consolidation, And Deconsolidation Of Facilities Entity Interactive Data Current Entity Interactive Data Current Less: Net income available to noncontrolling interests Net Income (Loss) Attributable to Noncontrolling Interest Redeemable noncontrolling interests in equity of consolidated subsidiaries Business Acquisition, Purchase Price Allocation, Redeemable Noncontrolling Interests in Equity of Consolidated Subsidiaries The amount of acquisition costs of a business combination allocated to redeemable noncontrolling interests in equity of consolidated subsidiaries. Deferred income taxes Deferred Income Tax Liabilities, Net Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Entity Small Business Entity Small Business Comprehensive income available to Tenet Healthcare Corporation common shareholders Comprehensive Income (Loss), Net of Tax, Attributable to Parent Termination Date Trading Arrangement Termination Date Noncontrolling Interest [Table] Noncontrolling Interest [Table] Effective Income Tax Rate Reconciliation [Table] Effective Income Tax Rate Reconciliation [Table] Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Other intangible assets Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Finite-Lived Number of outpatient centers Number Out Patient Centers, Ownership Interest Represents the number of provider-based outpatient centers owned by subsidiaries. DISPOSITION OF ASSETS AND LIABILITIES Disposal Groups, Including Discontinued Operations, Disclosure [Text Block] Discontinued Operation, Additional Disclosures [Abstract] Discontinued Operation, Additional Disclosures [Abstract] Tax expense at statutory federal rate Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Net income available to the investees Net Income (Loss) Attributable to Investee The amount of net income (loss) attributable to the investee Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Other current liabilities Other Liabilities, Current Document Type Document Type Interest and penalties related to accrued liabilities for uncertain tax positions, recognized Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued Purchases of businesses or joint venture interests, net of cash acquired Cash paid, net of cash acquired Cash paid, net of cash acquired Payments to Acquire Businesses, Net of Cash Acquired Fair value of assets and liabilities measured on recurring basis Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value as of Grant Date Award Grant Date Fair Value Intangible Asset, Indefinite-Lived Intangible Asset, Indefinite-Lived [Table Text Block] Tax benefit attributable to noncontrolling interests Effective Income Tax Rate Reconciliation, Noncontrolling Interest Income (Loss), Percent Operating Activities [Axis] Operating Activities [Axis] Schedule of Goodwill [Table] Goodwill [Table] Increase (Decrease) in Temporary Equity [Roll Forward] Increase (Decrease) in Temporary Equity [Roll Forward] 4.250% due 2029 Four Point Two Five Zero Percent Senior Secured First Lien Notes, Due 2029 [Member] Four Point Two Five Zero Percent Senior Secured First Lien Notes, Due 2029 Other Other Assets, Miscellaneous, Current Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Maximum Dollar Value of Shares That May Yet Be Purchased Under the Program Share Repurchase Program, Remaining Authorized, Amount Number of annual payments Financing Receivable, Number Of Annual Payments Financing Receivable, Number Of Annual Payments Arrangement Duration Trading Arrangement Duration Local Phone Number Local Phone Number Balance at beginning of period Balance at end of period Contract with Customer, Liability, Noncurrent Consolidation Items [Axis] Consolidation Items [Axis] Non-cancellable finance leases entered into Finance Lease, Right-Of-Use Assets Acquired Finance Lease, Right-Of-Use Assets Acquired Entity Address, Postal Zip Code Entity Address, Postal Zip Code Entity Registrant Name Entity Registrant Name Total Health Care, Patient Service, Excluding Physician Practices [Member] Health Care, Patient Service, Excluding Physician Practices [Member] Ambulatory Care Ambulatory Care: Ambulatory Care [Member] Represents Ambulatory Care as a reportable segment of the entity. Pre-tax income Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Captive Insurance Subsidiaries Captive Insurance Subsidiaries [Member] Represents activity related to captive insurance subsidiaries. Commitments and contingencies Commitments and Contingencies Gross Carrying Amount Intangible Asset, Finite-Lived, before Accumulated Amortization Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] 2030 Intangible Asset, Finite-Lived, Estimated Amortization Expense, Year Four Equity in earnings of unconsolidated affiliates Income (Loss) from Equity Method Investments Accounts payable, accrued expenses and other current liabilities Increase (Decrease) in Accounts Payable and Accrued Liabilities Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount New Madrid Fault Earthquakes, California Earthquakes and Windstorms New Madrid Fault Earthquakes, California Earthquakes and Named Windstorms [Member] New Madrid Fault Earthquakes, California Earthquakes and Named Windstorms Executive Category: Executive Category [Axis] Receivable Type [Axis] Receivable Type [Axis] Income tax expense related to items of other comprehensive income Other Comprehensive Income (Loss), Tax Vesting period Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period Total estimated costs for uninsured and charity care patients Health Care Organization, Expenses, Gross Goodwill [Roll Forward] Goodwill [Roll Forward] Counterparty Name [Axis] Counterparty Name [Axis] LIABILITIES AND EQUITY Liabilities and Equity [Abstract] Intangible Asset, Finite-Lived, Class [Domain] Intangible Asset, Finite-Lived, Class [Domain] 4.375% due 2030 Four Point Three Seven Five Percent Senior Secured First Lien Note, Due 2030 [Member] Four Point Three Seven Five Percent Senior Secured First Lien Note, Due 2030 Trade names Trade Names [Member] Indemnity and other Health Care, Patient Service - Indemnity And Other [Member] Health Care, Patient Service - Indemnity And Other [Member] Guarantees Physician And Group Coverage Guarantees Current Physician And Group Coverage Guarantees Current Inventories of supplies, at cost Inventory, Net Award Type [Domain] Award Type [Domain] Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount FAIR VALUE MEASUREMENTS Fair Value Disclosures [Text Block] Significant Unobservable Inputs (Level 3) Fair Value, Inputs, Level 3 [Member] Supplemental disclosures: Supplemental Cash Flow Information [Abstract] INSURANCE Property Professional and General Liability Insurance Disclosure [Text Block] This entire disclosure represents information pertaining to property and professional and general liability insurance. Total Number of Shares Purchased (in shares) Treasury Stock, Shares, Acquired 2027 Intangible Asset, Finite-Lived, Estimated Amortization Expense, Year One Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] PEO Name PEO Name Geographical [Axis] Geographical [Axis] 4.625% due 2028 Four Point Six Two Five Percent Senior Secured First Lien Notes, Due 2028 [Member] Four Point Six Two Five Percent Senior Secured First Lien Notes, Due 2028 Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Foreign currency translation adjustments and other Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss), before Reclassification and Tax Entity Tax Identification Number Entity Tax Identification Number Legal Entity [Axis] Legal Entity [Axis] Adjusted EBITDA Adjusted Earnings before Interest Tax Depreciation and Amortization Represents the net income with interest, taxes, depreciation, and amortization added back to it, used to analyze and compare profitability between companies and industries because it eliminates the effects of financing and accounting decisions. Insurance, maximum deductible per incident Insurance, Maximum Deductible Per Incident Insurance, Maximum Deductible Per Incident Professional and general liability reserves Self Insurance Reserve, Current Investments in Unconsolidated Affiliates Equity Method Investments [Policy Text Block] Cash and cash equivalents at beginning of period Cash and cash equivalents at end of period Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Realizability of Deferred Tax Assets Realizability of Deferred Tax Assets [Member] Realizability of Deferred Tax Assets Schedule of Finite-Lived Intangible Assets [Table] Intangible Asset, Finite-Lived [Table] Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Non-NEOs Non-NEOs [Member] Goodwill related to assets held for sale and disposed or deconsolidated facilities Goodwill Related To Assets Held For Sale And Disposed Or Deconsolidated Facility Goodwill Related To Assets Held For Sale And Disposed Or Deconsolidated Facility Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member] BASIS OF PRESENTATION Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Comprehensive net income Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Measurement Frequency [Domain] Measurement Frequency [Domain] Debt Instrument [Axis] Debt Instrument [Axis] Other long-term liabilities Business Combination, Recognized Liability Assumed, Other Liability, Noncurrent Cash paid to acquire businesses Payments to Acquire Businesses, Gross Stock-based compensation expense Share-Based Payment Arrangement, Noncash Expense 2028 Intangible Asset, Finite-Lived, Estimated Amortization Expense, Year Two Salaries, wages and benefits Labor and Related Expense Receivables from other government programs Receivables from government programs Current Receivables from government programs Current Later Years Finite-Lived Intangible Asset, Expected Amortization, After Year Four Finite-Lived Intangible Asset, Expected Amortization, After Year Four Long-term Debt, Type [Domain] Long-Term Debt, Type [Domain] Basic earnings per share ((in dollars per share) Earnings Per Share, Basic Equity, Class of Treasury Stock [Line Items] Equity, Class of Treasury Stock [Line Items] Balance at beginning of period Balance at end of period Contract with Customer, Liability, Current Repurchases of common stock Payments for Repurchase of Common Stock Total current assets  Assets, Current Statistical Measurement [Axis] Statistical Measurement [Axis] Insider Trading Arrangements [Line Items] Changes in valuation allowances Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Percent Award Type [Axis] Award Type [Axis] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Accounts receivable California provider fee program receivables Accounts receivable, net Accounts Receivable, after Allowance for Credit Loss, Current Schedule of Share Repurchase Activity Class of Treasury Stock [Table Text Block] Retained earnings Retained Earnings (Accumulated Deficit) Goodwill acquired during the period, net of purchase price allocation adjustments Goodwill, Acquired During Period And Purchase Accounting Adjustments Goodwill, Acquired During Period And Purchase Accounting Adjustments Product and Service [Axis] Product and Service [Axis] Long-term operating lease liabilities Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Long-Term Operating Lease Liabilities Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Long-Term Operating Lease Liabilities Number of outpatient centers recorded using equity method Number Of Outpatient Centers Recorded Using Equity Method Represents the number of outpatient centers in which they are recorded using the equity method of accounting Property and Professional and General Liablity Insurance [Abstract] Property and Professional and General Liablity Insurance [Abstract] 6.125% due 2028 Six Point One Two Five Percent Senior Unsecured Note Due 2028 [Member] Six Point One Two Five Percent Senior Unsecured Note Due 2028 Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member] Balances at beginning of period  Balances at end of period  Redeemable noncontrolling interests Temporary Equity, Including Noncontrolling Interest Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Common stock, $0.05 par value Common Stock Common Stock [Member] Gains (losses) on consolidations Business Combination, Achieved in Stages, Preacquisition Equity Interest in Acquiree, Remeasurement, Gain (Loss) Employee Severance Employee Severance [Member] Litigation and investigation costs Litigation and investigation costs Litigation Settlement, Fee Expense Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Cover [Abstract] Cover [Abstract] Noncontrolling Interest [Abstract] Noncontrolling Interest [Abstract] Equity Method Investment, Nonconsolidated Investee or Group of Investees Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member] Intangible Asset, Finite-Lived, after Accumulated Amortization, Estimated Amortization Expense, Fiscal Year Maturity [Abstract] Intangible Asset, Finite-Lived, after Accumulated Amortization, Estimated Amortization Expense, Fiscal Year Maturity [Abstract] Managed care Health Care, Patient Service - Managed Care [Member] Health Care, Patient Service - Managed Care [Member] Inventories and other current assets Increase (Decrease) in Inventories and Other Assets, Current The net change during the reporting period in the aggregate value of all inventory held by the reporting entity and other current assets not otherwise defined in the taxonomy, associated with underlying transactions that are classified as operating activities. Insurance, deductible Insurance, Deductible Insurance, Deductible Effect of dilutive instruments (in dollars per share) Effect of Dilutive Securities, Per Share Amount Effect of dilutive stock options, restricted stock units and mandatory convertible preferred stock, per-share amount. Equity Awards Adjustments Equity Awards Adjustments [Member] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Total liabilities and equity  Liabilities and Equity IMPAIRMENT AND RESTRUCTURING CHARGES, AND ACQUISITION-RELATED COSTS Restructuring, Impairment, and Other Activities Disclosure [Text Block] Stock Options Share-Based Payment Arrangement, Option [Member] Noncontrolling interests  Equity, Attributable to Noncontrolling Interest Segments [Axis] Segments [Axis] Other long-term liabilities Increase (Decrease) in Other Operating Liabilities Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Estimated fair value of debt instrument as percentage of carrying value (as a percent) Estimated Fair Value of Debt Instrument as Percentage of Carrying Value Represents the estimated fair value of the long-term debt instrument as a percentage of carrying value. Schedule of Components of Accounts Receivable Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Income Tax Jurisdiction [Domain] Income Tax Jurisdiction [Domain] Tabular List, Table Tabular List [Table Text Block] Vesting [Axis] Vesting [Axis] Additional paid-in capital Additional Paid in Capital Other non-operating income, net Other non-operating income, net Other Nonoperating Income (Expense) 2029 Intangible Asset, Finite-Lived, Estimated Amortization Expense, Year Three 2026 Intangible Asset, Finite-Lived, Estimated Amortization Expense, Remainder of Fiscal Year Name Awards Close in Time to MNPI Disclosures, Individual Name Equity: Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Purchases of marketable securities and long-term investments Payments to Acquire Investments Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member] Options, outstanding, intrinsic value Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Intrinsic Value Forfeited (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period Schedule of Changes in Redeemable Noncontrolling Interests in Equity of Consolidated Subsidiaries Redeemable Noncontrolling Interest [Table Text Block] 6.000% due 2033 Six Point Zero Percent Senior Unsecured Note, Due 2033 [Member] Six Point Zero Percent Senior Unsecured Note, Due 2033 Estimated future recoveries Estimated Future Recoveries from Accounts Assigned to Conifer Represents estimated future recoveries from accounts assigned to Conifer. Adjustment to Compensation: Adjustment to Compensation [Axis] Share Repurchase Program [Axis] Share Repurchase Program [Axis] Class of Stock [Domain] Class of Stock [Domain] Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Interest paid, net of capitalized interest Interest Paid, Excluding Capitalized Interest, Operating Activity Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Purchases and sales of businesses and noncontrolling interests, net Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests Credit Facility [Axis] Credit Facility [Axis] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Balance at beginning of period Balance at end of period Contract with Customer, Receivable, after Allowance for Credit Loss, Noncurrent Long-term debt, net of current portion Long-term debt, net of current portion Long-Term Debt and Lease Obligation Income Tax Jurisdiction [Axis] Income Tax Jurisdiction [Axis] Name Measure Name INCOME TAXES Income Tax Disclosure [Text Block] Schedule of Cash and Cash Equivalents [Table] Cash and Cash Equivalent [Table] Accounts payable Accounts Payable, Current Pay vs Performance Disclosure [Line Items] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Other items, net Other Noncash Income (Expense) Long-term Debt and Lease Obligation [Abstract] Long-Term Debt and Lease Obligation [Abstract] LONG-TERM DEBT AND LEASE OBLIGATIONS Debt Instrument [Line Items] Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Additional Paid-In Capital Additional Paid-in Capital [Member] Entity Filer Category Entity Filer Category Financing receivable, periodic payment Financing Receivable, Periodic Payment Financing Receivable, Periodic Payment Indefinite-lived Intangible Assets [Axis] Intangible Asset, Indefinite-Lived, Class [Axis] Restructuring Costs and Asset Impairment Charges [Abstract] Restructuring Costs and Asset Impairment Charges [Abstract] Guarantor Obligations, Nature [Domain] Guarantor Obligations, Nature [Domain] Name Trading Arrangement, Individual Name Cash and cash equivalents Cash and Cash Equivalent 2024 Repurchase Program 2024 Repurchase Program [Member] 2024 Repurchase Program Company Selected Measure Amount Company Selected Measure Amount Interest Expense Carryforward Utilization Interest Expense Carryforward Utilization [Member] Interest Expense Carryforward Utilization Depreciation and amortization Depreciation and amortization Depreciation and amortization Depreciation, Depletion and Amortization Stock-based compensation expense, tax benefit and issuance of common stock (in shares) Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Accounts and Financing Receivables [Table] Net income Net income Net income Net income Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Current assets: Assets, Current [Abstract] Non-PEO NEO Non-PEO NEO [Member] Entity Address, Address Line One Entity Address, Address Line One 6.875% Senior Notes due 2031 Senior Notes Senior Notes [Member] Vested (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Income tax expense Income tax expense Income Tax Expense (Benefit) Cash Payments Loss Contingency Accrual, Payments Per-Share Amount Dilutive Securities, Effect on Basic Earnings Per Share [Abstract] Net income Total net income available to nonredeemable noncontrolling interests Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest Award Timing Method Award Timing Method [Text Block] Description of Business and Basis of Presentation Consolidation, Policy [Policy Text Block] Net decrease in cash and cash equivalents Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Forecast Forecast [Member] Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Expected volatility, minimum Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Minimum Conifer Health Solutions, LLC Conifer Health Solutions, LLC [Member] Conifer Health Solutions, LLC Proceeds from the sale of noncontrolling interests Proceeds from Sale of Interest in Corporate Unit Less: Adjusted Earnings before Interest Tax Depreciation and Amortization [Abstract] Adjusted Earnings before Interest Tax Depreciation and Amortization Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Balance Sheet Location [Axis] Location, Statement of Financial Position, Balance [Axis] NumberOfReportableSegmentsDisclosedByDefinitionFlag NumberOfReportableSegmentsDisclosedByDefinitionFlag NumberOfReportableSegmentsDisclosedByDefinitionFlag Catastrophic Event [Axis] Catastrophic Event [Axis] Restatement Determination Date: Restatement Determination Date [Axis] Schedule of Performance Obligation, Expected Timing of Satisfaction Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table Text Block] Exercisable at the end of the period (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Exercise Price Insurance deductible as a percent Insurance, Minimum Deductible, Percentage Percentage of risk retained by the entity before the insurance arrangement begins to provide coverage. Schedule of Opening and Closing Balances of Contracts Assets and Liabilities Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block] Net income available to Tenet Healthcare Corporation common shareholders for basic earnings per share Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent Legal Costs Related to the Sale of Certain Facilities Legal Costs Related to The Sale of Certain Facilities [Member] Legal Costs Related to The Sale of Certain Facilities Stock-based compensation tax benefit Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-Based Payment Arrangement, Amount Windstorms Windstorms [Member] Localized violently destructive windstorm characterized by a funnel shaped cloud. Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] 5.125% due 2027 Five Point One Two Five Percent Senior Secured First Lien Notes, Due 2027 [Member] 4.625% Senior Notes Due 2028 [Member]