Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] Statistical Measurement [Domain] Statistical Measurement [Domain] Award Timing Predetermined Award Timing Predetermined [Flag] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis] Entity File Number Entity File Number Floor rate Derivative, Floor Interest Rate Additional Paid-in Capital Additional Paid-in Capital [Member] Interest Rate Swap Interest Rate Swap [Member] Self-pay and other Self-Pay And Other [Member] Self-Pay And Other Tabular List, Table Tabular List [Table Text Block] Income tax expense (benefit) related to other comprehensive income (loss) items Other Comprehensive Income (Loss), Tax Adoption of Recently Issued Accounting Standards, and Recent Accounting Pronouncements Not Yet Adopted New Accounting Pronouncements, Policy [Policy Text Block] Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Net income per common share, basic (in USD per share) Net (loss) income per common share, basic (in USD per share) Earnings Per Share, Basic Adjustment to Compensation: Adjustment to Compensation [Axis] Lease term Sale Leaseback Transaction, Lease Term Related Party Transactions Related Party Transactions Disclosure [Text Block] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Supplies Supplies Expense Other comprehensive income (loss), net of income taxes Other comprehensive income (loss) Other Comprehensive Income (Loss), Net of Tax Schedule of Segment Reporting Information, by Segment Schedule of Segment Reporting Information, by Segment [Table Text Block] Vesting of restricted stock unit awards (in shares) Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures Proceeds from insurance financing arrangements Proceeds From Insurance Financing Arrangements Proceeds From Insurance Financing Arrangements Adjustment to Compensation, Amount Adjustment to Compensation Amount Third party payers, percentage of revenue Concentration Risk, Percentage Oklahoma OKLAHOMA Noncontrolling interests Consolidation, Policy [Policy Text Block] Interest rate swap agreement notional amount Derivative Asset, Notional Amount Employee Stock Option Share-Based Payment Arrangement, Option [Member] Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Variable Interest Entity, Primary Beneficiary Variable Interest Entity, Primary Beneficiary [Member] Antidilutive Securities [Axis] Antidilutive Securities [Axis] Equity attributable to Ardent Health, Inc. Equity, Attributable to Parent Insider Trading Policies and Procedures [Line Items] Common stock, shares authorized (in shares) Common Stock, Shares Authorized One-Month Secured Overnight Financing Rate One-Month Secured Overnight Financing Rate [Member] One-Month Secured Overnight Financing Rate Current assets: Assets, Current [Abstract] Total liabilities and equity Liabilities and Equity Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] New Mexico NEW MEXICO Net loss attributable to redeemable noncontrolling interests Temporary Equity, Net Income Liabilities and Equity Liabilities and Equity [Abstract] Cover [Abstract] Number of hospitals Number Of Hospitals Number Of Hospitals Maximum Maximum [Member] Net income attributable to noncontrolling interests Net Income (Loss) Attributable to Noncontrolling Interest Accounting Policies [Abstract] Concentration Risk Type [Domain] Concentration Risk Type [Domain] Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Debt Instrument [Line Items] Debt Instrument [Line Items] Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Pay vs Performance Disclosure [Line Items] Retirement Benefits [Abstract] Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Liabilities [Abstract] Liabilities [Abstract] Accrued salaries and benefits Accrued Salaries, Current Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Income before income taxes Income before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Entity Shell Company Entity Shell Company Schedule of Carrying Values and Estimated Fair Values of Debt Instruments Schedule of Carrying Values and Estimated Fair Values of Debt Instruments [Table Text Block] Other long-term liabilities Other Liabilities, Noncurrent Schedule of Long-Term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] Statement of Stockholders' Equity [Abstract] Variable Interest Entity [Table] Variable Interest Entity [Table] Accounts payable and other accrued expenses and liabilities Increase (Decrease) in Other Accounts Payable and Accrued Liabilities Statement of Cash Flows [Abstract] Current installments of long-term debt Current installments of long-term debt Long-Term Debt, Current Maturities Other intangible assets Other Intangible Assets, Net Company Selected Measure Amount Company Selected Measure Amount Comprehensive income attributable to noncontrolling interests Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Interest expense Interest Expense, Operating Comprehensive income attributable to Ardent Health, Inc. 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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] Other Liabilities Disclosure [Abstract] Reclassification out of Accumulated Other Comprehensive Income Reclassification out of Accumulated Other Comprehensive Income [Member] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Number of rehabilitation hospitals Number Of Rehabilitation Hospitals Number Of Rehabilitation Hospitals Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Net (loss) income attributable to common stockholders, basic Net Income (Loss) Available to Common Stockholders, Basic Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Current liabilities: Liabilities, Current [Abstract] Real estate acquisition payment Proceeds from Sale of Real Estate Geographical [Axis] Geographical [Axis] Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Related Party Transaction [Table] Related Party Transaction [Table] Net income per common share, diluted (in USD per share) Net (loss) income per common share, diluted (in USD per share) Earnings Per Share, Diluted Forecast Forecast [Member] Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Accounts receivable Accounts Receivable, after Allowance for Credit Loss, Current Reclassification out of Accumulated Other Comprehensive Income [Axis] Reclassification out of Accumulated Other Comprehensive Income [Axis] Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Title of 12(b) Security Title of 12(b) Security Reportable Segment Reportable Segment [Member] Reportable Segment Number of individuals Loss Contingency, Number of Plaintiffs Net income per share: Earnings Per Share [Abstract] Percentage of revenue Percentage of Revenue Percentage of Revenue Other revenue, percentage of revenue Other Revenue, Percentage of Revenue Other Revenue, Percentage of Revenue Payables, current Accounts Payable, Other, Current Award Timing Disclosures [Line Items] Operating Loss Carryforwards [Line Items] Operating Loss Carryforwards [Line Items] Long-term debt Long-Term Debt, Gross Property and equipment, net Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, after Accumulated Depreciation and Amortization Distributions to noncontrolling interests Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders Net income attributable to Ardent Health, Inc. Net income (loss) attributable to Ardent Health, Inc. 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Disclosure [Text Block] Unrecognized tax benefits Unrecognized Tax Benefits Antidilutive securities (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Receivables, current Other Receivables, Gross, Current Weighted-average common shares outstanding: Weighted Average Number of Shares Outstanding, Diluted [Abstract] All Adjustments to Compensation All Adjustments to Compensation [Member] Amendment Flag Amendment Flag Payments of principal on insurance financing arrangements Insurance Financing Arrangements, Principal Payments Insurance Financing Arrangements, Principal Payments Depreciation and amortization Cost, Depreciation, Amortization and Depletion Termination Date Trading Arrangement Termination Date Net cash used in financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Measure: Measure [Axis] Annual rent increase Annual Rent Increase, Percent Annual Rent Increase, Percent Vesting of restricted stock unit awards Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures Weighted average number of common shares, basic (in shares) Weighted Average Number of Shares Outstanding, Basic New Jersey NEW JERSEY Schedule of Earnings Per Share, Basic and Diluted Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Segment Reporting [Abstract] Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Rents and leases Operating Lease, Expense Debt Disclosure [Abstract] Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Entity Tax Identification Number Entity Tax Identification Number Scenario [Domain] Scenario [Domain] Schedule of Variable Interest Entities Schedule of Variable Interest Entities [Table Text Block] Forgone Recovery due to Expense of Enforcement, 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Security Exchange Name Receivable (payable), net Trade Receivable (Payable), Net Trade Receivable (Payable), Net Number of consolidated variable interest entities Number of Consolidated Variable Interest Entities Number of Consolidated Variable Interest Entities Total liabilities Liabilities Liabilities Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Product Concentration Risk Product Concentration Risk [Member] Non-cash purchases of property and equipment Capital Expenditures Incurred but Not yet Paid Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Annual rates Derivative, Variable Interest Rate Prepaid expenses Prepaid Expense, Current Expenses: Operating Expenses [Abstract] Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Increase (Decrease) in Temporary Equity [Roll Forward] Increase (Decrease) in Temporary Equity [Roll Forward] Equity-based compensation Distributions to 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