Debt Disclosure [Abstract] Line of Credit Facility [Table] Line of Credit Facility [Table] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Minimum [Member] Minimum [Member] Maximum [Member] Maximum [Member] Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Consolidated Leverage Ratio: Greater Than Equal To 3.00 to 1.0 Debt Instrument, By Leverage Ratio, Tranche One [Member] Debt Instrument, By Leverage Ratio, Tranche One [Member] Consolidated Leverage Ratio: Less Than 3.00 to 1.0 but Greater Than Equal To 2.00 to 1.0 Debt Instrument, By Leverage Ratio, Tranche Two [Member] Debt Instrument, By Leverage Ratio, Tranche Two [Member] Consolidated Leverage Ratio: Less Than 2.00 to 1.0 but Greater Than Equal To 0.75 to 1.0 Debt Instrument, By Leverage Ratio, Tranche Three [Member] Debt Instrument, By Leverage Ratio, Tranche Three [Member] Consolidated Leverage Ratio: Less Than 0.75 to 1.0 Debt Instrument, By Leverage Ratio, Tranche Four [Member] Debt Instrument, By Leverage Ratio, Tranche Four [Member] Variable Rate [Axis] Variable Rate [Axis] Variable Rate [Domain] Variable Rate [Domain] Eurodollar [Member] Eurodollar [Member] Base Rate [Member] Base Rate [Member] Lender Name [Axis] Lender Name [Axis] Line of Credit Facility, Lender [Domain] Line of Credit Facility, Lender [Domain] Credit Facility [Axis] Credit Facility [Axis] Credit Facility [Domain] Credit Facility [Domain] Line of Credit Facility [Line Items] Line of Credit Facility [Line Items] Consolidated Leverage Ratio Consolidated Leverage Ratio Consolidated Leverage Ratio Commitment fee percentage Line of Credit Facility, Commitment Fee Percentage Letter Of Credit Fee Letter Of Credit Fee The fee, expressed as a percentage of the letters of credit, for the letters of credit Basis spread on variable rate Debt Instrument, Basis Spread on Variable Rate Statement of Financial Position [Abstract] ASSETS Assets [Abstract] Current assets: Assets, Current [Abstract] Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Patient accounts receivable Accounts Receivable, Net, Current Prepaid expenses Prepaid Expense, Current Other current assets Other Assets, Current Total current assets Assets, Current Property and equipment, net of accumulated depreciation of $98,936 and $95,472 Property, Plant and Equipment, Net Operating lease right of use assets Operating Lease, Right-of-Use Asset Goodwill Goodwill Intangible assets, net of accumulated amortization of $35,402 and $33,050 Intangible Assets, Net (Excluding Goodwill) Deferred income taxes Deferred Tax Assets, Net of Valuation Allowance Other assets Other Assets, Noncurrent Total assets Assets LIABILITIES AND EQUITY Liabilities and Equity [Abstract] Current liabilities: Liabilities, Current [Abstract] Accounts payable Accounts Payable, Current Payroll and employee benefits Employee-related Liabilities, Current Accrued expenses Accrued Liabilities, Current Current portion of long-term obligations Long-term Debt and Capital Lease Obligations, Current Current portion of operating lease liabilities Operating Lease, Liability, Current Total current liabilities Liabilities, Current Long-term obligations, less current portion Long-term Debt and Capital Lease Obligations Operating lease liabilities, less current portion Operating Lease, Liability, Noncurrent Other long-term obligations Other Liabilities, Noncurrent Total liabilities Liabilities Commitments and Contingencies—Note 6 Commitments and Contingencies Equity: Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Preferred stock, $0.001 par value, 5,000,000 shares authorized; none issued or outstanding Preferred Stock, Value, Outstanding Common stock, $0.001 par value, 60,000,000 shares authorized; 36,445,591 and 36,252,280 shares issued; and 32,130,184 and 31,973,505 shares outstanding Common Stock, Value, Outstanding Additional paid-in capital Additional Paid in Capital, Common Stock Treasury stock, at cost 4,315,407 and 4,278,775 shares of common stock Treasury Stock, Value Accumulated other comprehensive income Accumulated Other Comprehensive Income (Loss), Net of Tax Retained earnings Retained Earnings (Accumulated Deficit) Total Amedisys, Inc. stockholders’ equity Stockholders' Equity Attributable to Parent Noncontrolling interests Stockholders' Equity Attributable to Noncontrolling Interest Total equity Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Total liabilities and equity Liabilities and Equity Equity [Abstract] Share Repurchase [Table] Share Repurchase [Table] Share Repurchase [Table] Share Repurchase [Axis] Share Repurchase [Axis] Share Repurchase [Axis] Share Repurchase [Domain] Share Repurchase [Domain] [Domain] for Share Repurchase [Axis] KKR Share Repurchase KKR Share Repurchase [Member] KKR Share Repurchase [Member] Share Repurchase [Line Items] Share Repurchase [Line Items] [Line Items] for Share Repurchase [Table] Stock Repurchase Program, Authorized Amount Stock Repurchase Program, Authorized Amount Stock Repurchase Program Expiration Date Stock Repurchase Program Expiration Date Shares repurchased (shares) Treasury Stock, Shares, Acquired Percentage of shares outstanding Percentage of Shares Outstanding Percentage of Shares Outstanding Purchase of company stock Payments for Repurchase of Common Stock Discounted closing stock price Discounted closing stock price Discounted closing stock price Percentage of closing stock price Percentage of closing stock price Percentage of closing stock price Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Term Loan [Member] Loans Payable [Member] Revolving Credit Facility [Member] Revolving Credit Facility [Member] One Hundred Seventy Five Million Term Loan Facility [Member] One Hundred Seventy Five Million Term Loan Facility [Member] One Hundred Seventy Five Million Term Loan Facility [Member] 200 Million Revolving Credit Facility Two Hundred Million Revolving Credit Facility [Member] Two Hundred Million Revolving Credit Facility [Member] 550 Million Revolving Credit Facility [Member] Five Hundred Fifty Million Revolving Credit Facility [Member] Five Hundred Fifty Million Revolving Credit Facility [Member] Debt Instrument [Line Items] Debt Instrument [Line Items] Debt instrument, face amount Debt Instrument, Face Amount Debt Instrument Interest Rate at Period End Debt Instrument Interest Rate at Period End Debt Instrument Interest Rate at Period End Maturity Date Debt Instrument, Maturity Date Statement of Stockholders' Equity [Abstract] Statement [Table] Statement [Table] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Common Stock Common Stock [Member] Additional Paid-in Capital Additional Paid-in Capital [Member] Treasury Stock Treasury Stock [Member] Accumulated Other Comprehensive Income AOCI Attributable to Parent [Member] Retained Earnings Retained Earnings [Member] Noncontrolling Interests Noncontrolling Interest [Member] Statement [Line Items] Statement [Line Items] Balance, Stockholders Equity Balance (in shares) Shares, Outstanding Issuance of stock - employee stock purchase plan Stock Issued During Period, Value, Employee Stock Purchase Plan Issuance of stock - employee stock purchase plan (shares) Stock Issued During Period, Shares, Employee Stock Purchase Plans Issuance of stock - 401(k) plan Stock Issued During Period Value Four Zero One K Employer Match Value of stock issued during the period to employees as employer's matching contribution to the company's 401(K) plan Issuance of stock - 401(k) plan (shares) Stock Issued During Period Shares Four Zero One K Employer Match Number of shares issued during the period to employees as employer's matching contribution to the company's 401(K) plan Issuance/(cancellation) of non-vested stock Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures Issuance/(cancellation) of non-vested stock (shares) Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures Exercise of stock options Stock Issued During Period, Value, Stock Options Exercised Exercise of stock options (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Non-cash compensation Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition Surrendered Shares Surrendered Shares Shares of common stock surrendered by certain employees to satisfy obligations in connection with the vesting of stock. Shares held in Treasury Stock at cost. Shares repurchased Treasury Stock, Value, Acquired, Cost Method Noncontrolling interest distribution Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders Repurchase of noncontrolling interest Equity Impact of Repurchase of Noncontrolling Interest Equity Impact of Repurchase of Noncontrolling Interest Net income Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Balance, Stockholders Equity Balance (in shares) Subsequent Events [Abstract] SUBSEQUENT EVENT Subsequent Events [Text Block] Accounting Policies [Abstract] Weighted average number of shares outstanding - basic (shares) Weighted Average Number of Shares Outstanding, Basic Effect of dilutive securities: Incremental Weighted Average Shares Attributable to Dilutive Effect [Abstract] Stock options (shares) Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements Non-vested stock and stock units (shares) Non Vested Stock And Stock Units Non vested stock and stock units. Weighted average number of shares outstanding - diluted (shares) Weighted Average Number of Shares Outstanding, Diluted Anti-dilutive securities (shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Concentration Risk [Table] Concentration Risk [Table] Concentration Risk Type [Axis] Concentration Risk Type [Axis] Concentration Risk Type [Domain] Concentration Risk Type [Domain] Customer Concentration Risk Customer Concentration Risk [Member] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Accounts Receivable Accounts Receivable [Member] Customer [Axis] Customer [Axis] Customer [Domain] Customer [Domain] Single Payor Major Single Payor Customer [Member] Major Single Payor Customer [Member] Concentration Risk [Line Items] Concentration Risk [Line Items] Concentration risk (percent) Concentration Risk, Percentage Percentage of patient receivables outstanding Percentage Of Patient Receivables Outstanding Percentage of patient receivables outstanding. Accounts receivable derived from Medicare Accounts Receivable, Portion Derived From Medicare Accounts Receivable, Portion Derived From Medicare Historical collection rate from Medicare Historical Collection Rate From Medicare Historical collection rate from Medicare. Revenue adjustment to Medicare revenue Revenue Adjustment To Medicare Revenue Description of the provisions that reduce the amount of Medicare revenue recognized by the entity. Rate of request for anticipated payment submitted for the initial episode of care Rate Of Request For Anticipated Payment Submitted For Initial Episode Of Care Description containing the percentage of estimated payment that is requested at the start of care for an initial episode of care. Rate of request for anticipated payment submitted for subsequent episodes of care Rate Of Request For Anticipated Payment Submitted For Subsequent Episodes Of Care Description containing the percentage of estimated payment that is requested at the start of care for any subsequent episodes of care. Maximum days to submit final bill from the start of episode Maximum Days To Submit Final Bill From Start Of Episode Description containing the number of days from the start of the episode in which the final bill must be submitted to Medicare. Maximum days to submit final bill from the date the request for anticipated payment was paid Maximum Days To Submit Final Bill From Date Request For Anticipated Payment Was Paid Description containing the number of days from the date the request for anticipated payment was received in which the final bill must be submitted to Medicare. Revenue Recognition and Deferred Revenue [Abstract] Schedule of Revenue Sources, Health Care Organization [Table] Schedule of Revenue Sources, Health Care Organization [Table] Payor Class [Axis] Payor Class [Axis] Payor Class [Axis] Payor Class [Domain] Payor Class [Domain] [Domain] for Payor Class [Axis] Home Health Medicare [Member] Home Health Medicare [Member] Home Health Medicare [Member] Home Health Non-Medicare - Episodic Based [Member] Home Health Non-Medicare - Episodic Based [Member] Home Health Non-Medicare - Episodic Based [Member] Home Health Non-Medicare - Non-Episodic Based [Member] Home Health Non-Medicare - Non-Episodic Based [Member] Home Health Non-Medicare - Non-Episodic Based [Member] Hospice Medicare [Member] Hospice Medicare [Member] Hospice Medicare [Member] Hospice Non-Medicare [Member] Hospice Non-Medicare [Member] Hospice Non-Medicare [Member] Personal Care Personal Care [Member] Personal Care [Member] Revenue Recognition, Multiple-deliverable Arrangements [Line Items] Revenue Recognition, Multiple-deliverable Arrangements [Line Items] Revenue by payor class as a percentage of total net service revenue Revenue by payor class as a percentage of total net service revenue Revenue by payor class as a percentage of total net service revenue Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Recent Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Use of Estimates Use of Estimates, Policy [Policy Text Block] Principles of Consolidation Consolidation, Policy [Policy Text Block] Investments Equity and Cost Method Investments, Policy [Policy Text Block] Revenue Recognition Revenue Recognition, Policy [Policy Text Block] Patient Accounts Receivable Trade and Other Accounts Receivable, Policy [Policy Text Block] Debt Issuance Costs Debt Issuance Costs Policy [Policy Text Block] Disclosure of accounting policy for debt issuance costs. Fair Value of Financial Instruments Fair Value of Financial Instruments, Policy [Policy Text Block] Weighted-Average Shares Outstanding Earnings Per Share, Policy [Policy Text Block] Business Combinations Business Combinations Policy [Policy Text Block] SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Significant Accounting Policies [Text Block] Leases [Abstract] Operating Lease - 2019 (a) Lessee, Operating Lease, Liability, Payments, Due Next Twelve Months Operating Lease - 2020 Lessee, Operating Lease, Liability, Payments, Due Year Two Operating Lease - 2021 Lessee, Operating Lease, Liability, Payments, Due Year Three Operating Lease - 2022 Lessee, Operating Lease, Liability, Payments, Due Year Four Operating Lease - 2023 Lessee, Operating Lease, Liability, Payments, Due Year Five Operating Lease - Thereafter Lessee, Operating Lease, Liability, Payments, Due after Year Five Operating Lease - Total undiscounted lease payments Lessee, Operating Lease, Liability, Payments, Due Operating Lease - Less: Imputed interest Lessee, Operating Lease, Liability, Undiscounted Excess Amount Total operating lease liabilities Operating Lease, Liability Finance Lease - 2019 (a) Finance Lease, Liability, Payments, Due Next Twelve Months Finance Lease - 2020 Finance Lease, Liability, Payments, Due Year Two Finance Lease - 2021 Finance Lease, Liability, Payments, Due Year Three Finance Lease - 2022 Finance Lease, Liability, Payments, Due Year Four Finance Lease - 2023 Finance Lease, Liability, Payments, Due Year Five Finance Lease - Thereafter Finance Lease, Liability, Payments, Due after Year Five Finance Lease - Total undiscounted lease payments Finance Lease, Liability, Payments, Due Finance Lease - Less: Imputed interest Finance Lease, Liability, Undiscounted Excess Amount Total finance lease liabilities Finance Lease, Liability Schedule of Long-Term Debt Schedule of Long-term Debt Instruments [Table Text Block] Schedule of Commitment Fee Under Credit Facilities Schedule of Line of Credit Facilities [Table Text Block] Business Combinations [Abstract] Schedule of Business Acquisitions Schedule of Business Acquisitions, by Acquisition [Table Text Block] Business Acquisition, Pro Forma Information Business Acquisition, Pro Forma Information [Table Text Block] LEASES Lessee, Leases [Policy Text Block] Commitments and Contingencies Disclosure [Abstract] COMMITMENTS AND CONTINGENCIES Commitments and Contingencies Disclosure [Text Block] Operating cash flow from operating leases Operating Lease, Payments Financing cash flow from finance leases Finance Lease, Principal Payments Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Right-of-Use Asset Obtained in Exchange for Finance Lease Liability Right-of-Use Asset Obtained in Exchange for Finance Lease Liability Lessee, Operating lease, Reductions to ROU assets resulting from reductions to lease obligations Lessee, Operating lease, Reductions to ROU assets resulting from reductions to lease obligations Lessee, Operating lease, Reductions to ROU assets resulting from reductions to lease obligations Lessee, Finance lease, Reduction to ROU assets resulting from reductions to lease obligations Lessee, Finance lease, Reduction to ROU assets resulting from reductions to lease obligations Lessee, Finance lease, Reduction to ROU assets resulting from reductions to lease obligations Operating leases, Weighted average remaining term Operating Lease, Weighted Average Remaining Lease Term Finance leases, Weighted average remaining term Finance Lease, Weighted Average Remaining Lease Term Operating leases, Discount rate Operating Lease, Weighted Average Discount Rate, Percent Finance leases, Discount rate Finance Lease, Weighted Average Discount Rate, Percent Segment Reporting [Abstract] Schedule of Operating Income of Reportable Segments Schedule of Segment Reporting Information, by Segment [Table Text Block] Deferred debt issuance cost Debt Issuance Costs, Line of Credit Arrangements, Gross Unamortized debt issuance expense Unamortized Debt Issuance Expense Amortization of debt issuance costs Amortization of Debt Issuance Costs Unamortized debt issuance cost amortization period Unamortized Debt Issuance Cost Amortization Period Expected amortization period of debt issuance cost Operating lease ROU assets Current portion of operating lease liabilities Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Fair Value, Inputs, Level 1 [Member] Fair Value, Inputs, Level 1 [Member] Fair Value, Inputs, Level 2 [Member] Fair Value, Inputs, Level 2 [Member] Fair Value, Inputs, Level 3 [Member] Fair Value, Inputs, Level 3 [Member] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Debt Instrument Carrying Amount Excluding Capital Leases Debt Instrument Carrying Amount Excluding Capital Leases Debt Instrument Carrying Amount Excluding Capital Leases Long-term Debt, Fair Value Long-term Debt, Fair Value Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Trade Names [Member] Trade Names [Member] Noncompete Agreements [Member] Noncompete Agreements [Member] Geographical [Axis] Geographical [Axis] Geographical [Domain] Geographical [Domain] Tennessee [Member] TENNESSEE Segments [Axis] Segments [Axis] Segments [Domain] Segments [Domain] Hospice Hospice [Member] Hospice [Member] Business Acquisition [Axis] Business Acquisition [Axis] Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] Compassionate Care Hospice [Member] Compassionate Care Hospice [Member] Compassionate Care Hospice [Member] Christian Care at Home Christian Care at Home [Member] Christian Care at Home [Member] East Tennessee Personal Care Services East Tennessee Personal Care Services [Member] East Tennessee Personal Care Services [Member] RoseRock Healthcare [Member] RoseRock Healthcare [Member] RoseRock Healthcare [Member] Business Acquisition [Line Items] Business Acquisition [Line Items] Payments to acquire business Payments to Acquire Businesses, Gross Cash Acquired from Acquisition Cash Acquired from Acquisition Acquisition, number of care centers acquired Number of Businesses Acquired Principal amount Long-term Debt, Gross Weighted-average amortization period Acquired Finite-lived Intangible Assets, Weighted Average Useful Life Payments related to tax asset and working capital Payments related to tax asset and working capital Payments related to tax asset and working capital Net service revenue Health Care Organization, Revenue Net of Patient Service Revenue Provisions Business Combination, Integration Related Costs Business Combination, Integration Related Costs Operating income (loss) Operating Income (Loss) Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Prepaid Expense Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Prepaid Expense Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, acquired at the acquisition date. Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Other Current Asset Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Other Current Asset Amount of asset related to consideration amount of other assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer, acquired at the acquisition date. Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment Business Combination Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Assets Business Combination Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Assets Acquisition, other intangibles recorded Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Accounts Payable Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Accounts Payable Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Payroll and Employee Benefits Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Payroll and Employee Benefits Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Payroll and Employee Benefits Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Accrued Expenses Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Accrued Expenses Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Accrued Expenses Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Long-term Debt Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net Goodwill recorded during period Goodwill, Acquired During Period Operating lease cost Operating Lease, Expense Impairment of operating lease ROU assets Operating Lease, Impairment Loss Total operating lease cost Operating Lease, Cost Finance lease ROU asset amortization Finance Lease, Right-of-Use Asset, Amortization Finance lease interest expense Finance Lease, Interest Expense Total finance lease cost Finance Lease, Cost Total amount of finance lease cost including amortization of ROU asset and interest expense Variable lease cost Variable Lease, Cost Short-term lease cost Short-term Lease, Cost Total lease cost Lease, Cost Income Statement [Abstract] Cost of service, excluding depreciation and amortization Cost of Goods and Services Sold General and administrative expenses: General and Administrative Expense [Abstract] Salaries and benefits Labor and Related Expense Non-cash compensation Share-based Compensation Other Other General and Administrative Expense Depreciation and amortization Depreciation, Depletion and Amortization, Nonproduction Operating expenses Costs and Expenses Operating income Other income (expense): Nonoperating Income (Expense) [Abstract] Interest income Investment Income, Interest and Dividend Interest expense Interest Expense Equity in earnings from equity method investments Income (Loss) from Equity Method Investments Miscellaneous, net Other Nonoperating Income (Expense) Total other (expense) income, net Nonoperating Income (Expense) Income before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Income tax expense Income Tax Expense (Benefit) Net income Net income attributable to noncontrolling interests Net Income (Loss) Attributable to Noncontrolling Interest Net income attributable to Amedisys, Inc. Net Income (Loss) Attributable to Parent Basic earnings per common share: Earnings Per Share, Basic [Abstract] Net income attributable to Amedisys, Inc. common stockholders, basic (usd per share) Earnings Per Share, Basic Weighted average shares outstanding, basic (shares) Diluted earnings per common share: Earnings Per Share, Diluted [Abstract] Net income attributable to Amedisys, Inc. common stockholders, diluted (usd per share) Earnings Per Share, Diluted Weighted average shares outstanding, diluted (shares) Finance lease ROU assets Finance Lease, Right-of-Use Asset Finance leases accumulated amortization Lessee, Finance leases, Accumulated Amortization Accumulated amortization of finance leases Finance lease ROU assets, net Finance lease, Right-of-Use Asset, Net Amount of lessee's right to use underlying asset under finance lease, net of accumulated amortization. Current installments of obligations under finance leases Finance Lease, Liability, Current Long-term portion of obligations under finance leases Finance Lease, Liability, Noncurrent Loss Contingencies [Table] Loss Contingencies [Table] Payors [Axis] Payors [Axis] Payors [Axis] Payors [Domain] Payors [Domain] [Domain] for Payors [Axis] Company's insurance carriers [Member] Company's insurance carriers [Member] Company's insurance carriers [Member] Litigation Case [Axis] Litigation Case [Axis] Litigation Case [Domain] Litigation Case [Domain] US Department of Justice US Department of Justice [Member] US Department of Justice Amedisys CIA Amedisys CIA [Member] Amedisys CIA [Member] Compassionate Care Hospice CIA Compassionate Care Hospice CIA [Member] Compassionate Care Hospice CIA [Member] Securities Class Action Lawsuit [Member] Securities Class Action Lawsuit [Member] Securities Class Action Lawsuit [Member] Safeguard Zone Program Integrity Contractor Safeguard Zone Program Integrity Contractor [Member] Safeguard Zone Program Integrity Contractor [Member] Internal Audit Compliance Review [Member] Internal Audit Compliance Review [Member] Internal Audit Compliance Review [Member] Massachusetts MASSACHUSETTS Morgantown, West Virginia Morgantown, West Virginia [Member] Morgantown, West Virginia [Member] Parkersburg, West Virginia Parkersburg, West Virginia [Member] Parkersburg, West Virginia [Member] South Carolina SOUTH CAROLINA Florida FLORIDA Lakeland, Florida Lakeland, Florida [Member] Lakeland, Florida [Member] Clearwater, Florida Clearwater, Florida [Member] Clearwater, Florida [Member] Home Health Home Health [Member] Home Health [Member] Infinity HomeCare Infinity HomeCare [Member] Infinity HomeCare [Member] Loss Contingency Nature [Axis] Loss Contingency Nature [Axis] Loss Contingency, Nature [Domain] Loss Contingency, Nature [Domain] Extrapolated Extrapolated [Member] Extrapolated [Member] Unfavorable Unfavorable [Member] Loss Contingencies [Line Items] Loss Contingencies [Line Items] Payments for legal settlements Payments for Legal Settlements Number of patients Number of patients Number of patients Corporate integrity agreement term (years) Corporate Integrity Agreement Term Corporate Integrity Agreement Term Loss contingency accrual Loss Contingency Accrual Loss contingency accrual, period increase (decrease) Loss Contingency Accrual, Period Increase (Decrease) Settlement amount to be paid by company's insurance carriers Loss Contingency, Receivable, Current Securities Class Action Lawsuit settlement, net Securities Class Action Lawsuit settlement Charge related to Securities Class Action Lawsuit settlement Number of beneficiaries Number of beneficiaries Number of beneficiaries who received services Recovery amount of overpayment made to subsidiary Recovery Amount Of Overpayment Made To Subsidiary Recovery amount of the overpayment made to the subsidiary. Recovery amount of overpayment made to subsidiary including interest Recovery Amount of Overpayment Made To Subsidiary Including Interest Recovery amount of overpayment made to subsidiary including interest Number of claims submitted by subsidiary Number Of Claims Submitted By Subsidiary Number of claims submitted by subsidiary. Recovery amount of over payment made to subsidiary including interest withheld Recovery Amount Of Over Payment Made To Subsidiary Including Interest Withheld Recovery amount of over payment made to subsidiary including interest withheld Indemnity receivable related to amounts withheld prior to August 2009 Loss Contingency, Receivable, Noncurrent, Related To Amounts Withheld Prior To August 2009 Loss Contingency, Receivable, Noncurrent, Related To Amounts Withheld Prior To August 2009 Indemnity receivable Loss Contingency, Receivable, Noncurrent Other General and Administrative Expense Actual claims payment Actual Claims Payment Actual Claims Payment Error rate (percent) Error Rate Percentage Error Rate Percentage Indemnification amount Indemnification Amount The amount to be reimbursed if and when certain assumed liabilities are paid Florida ZPIC revenue reduction Florida Zpic Revenue Reduction Reduction in revenue as a result of the Florida ZPIC audit Health insurance retention limit Health Insurance Retention Limit Maximum potential amount of future payments the entity could be required to make related to a specific Health Insurance Claim. Workers compensation insurance retention limit Workers Compensation Insurance Retention Limit Maximum potential amount of future payments the entity could be required to make related to a specific Workers' Compensation Insurance Claim. Professional liability insurance retention limit Professional Liability Insurance Retention Limit Maximum potential amount of future payments the entity could be required to make related to a specific Professional Liability Claim. Subsequent Event [Table] Subsequent Event [Table] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Subsequent Event Subsequent Event [Member] Subsequent Event [Line Items] Subsequent Event [Line Items] Total purchase price for acquisition Business Combination, Consideration Transferred Organization, Consolidation and Presentation of Financial Statements [Abstract] NATURE OF OPERATIONS, CONSOLIDATION AND PRESENTATION OF FINANCIAL STATEMENTS Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] LONG-TERM OBLIGATIONS Debt Disclosure [Text Block] Statement of Cash Flows [Abstract] 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] Depreciation and amortization Depreciation, Depletion and Amortization 401(k) employer match Pension Cost (Reversal of Cost) Amortization and impairment of operating lease right of use assets Amortization and Impairment of Operating Lease Right Of Use Asset Amortization and Impairment of Operating Lease Right Of Use Asset (Gain) loss on disposal of property and equipment Gain (Loss) on Disposition of Property Plant Equipment Deferred income taxes Deferred Income Tax Expense (Benefit) Equity in earnings from equity method investments Amortization of deferred debt issuance costs/debt discount Amortization of Debt Issuance Costs and Discounts Write off of deferred debt issuance cost Write off of Deferred Debt Issuance Cost Return on equity investment Proceeds from Equity Method Investment, Distribution Changes in operating assets and liabilities, net of impact of acquisitions: Increase (Decrease) in Operating Capital [Abstract] Patient accounts receivable Increase (Decrease) in Accounts Receivable Other current assets Increase (Decrease) in Prepaid Expense and Other Assets Other assets Increase (Decrease) in Other Operating Assets Accounts payable Increase (Decrease) in Accounts Payable Accrued expenses Increase (Decrease) in Accrued Liabilities Other long-term obligations Increase (Decrease) in Other Noncurrent Liabilities Operating lease liabilities Increase (Decrease) In Operating Lease Liability Amount of increase (decrease) in operating lease liabilities Operating lease right of use assets Increase (Decrease) In Operating Lease Right Of Use Asset The amount of increase (decrease) In Operating Lease Right Of Use Asset Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities Cash Flows from Investing Activities: Net Cash Provided by (Used in) Investing Activities [Abstract] Proceeds from sale of deferred compensation plan assets Proceeds from Sale of Restricted Investments Proceeds from the sale of property and equipment Proceeds from Sale of Property, Plant, and Equipment Investments in equity method investees Payments to Acquire Investments Purchases of property and equipment Payments to Acquire Property, Plant, and Equipment Acquisitions of businesses, net of cash acquired Payments to Acquire Businesses, Net of Cash Acquired Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities Cash Flows from Financing Activities: Net Cash Provided by (Used in) Financing Activities [Abstract] Proceeds from issuance of stock upon exercise of stock options Proceeds from Stock Options Exercised Proceeds from issuance of stock to employee stock purchase plan Proceeds from Stock Plans Shares withheld upon stock vesting Payments Related to Tax Withholding for Share-based Compensation Noncontrolling interest distribution Cash Distribution To Noncontrolling Interest Payment of dividends or other distributions to noncontrolling interest holders. Proceeds from borrowings under term loan Proceeds From Borrowings Under Term Loan The cash inflow from borrowings under the term loan. Proceeds from borrowings under revolving line of credit Proceeds from Short-term Debt Repayments of borrowings under revolving line of credit Repayments of Short-term Debt Principal payments of long-term obligations Repayments of Long-term Debt Debt issuance costs Payments of Financing Costs Purchase of company stock Repurchase of noncontrolling interest Payments For Repurchase Of Noncontrolling Interest The cash outflow during the period for redemption of noncontrolling interests. Net cash provided by (used in) financing activities Net Cash Provided by (Used in) Financing Activities Net decrease in cash and cash equivalents Cash and Cash Equivalents, Period Increase (Decrease) Cash and cash equivalents at beginning of period Cash and cash equivalents at end of period Supplemental Disclosures of Cash Flow Information: Supplemental Cash Flow Information [Abstract] Cash paid for interest Interest Paid, Including Capitalized Interest, Operating and Investing Activities Cash paid for income taxes, net of refunds received Income Taxes Paid, Net Supplemental Disclosures of Non-Cash Financing Activities: Other Noncash Investing and Financing Items [Abstract] Capital leases Capital Lease Obligations Incurred Adjustments for New Accounting Pronouncements [Axis] Adjustments for New Accounting Pronouncements [Axis] Type of Adoption [Domain] Type of Adoption [Domain] Accounting Standards Update 2016-02 [Member] Accounting Standards Update 2016-02 [Member] Type of Equity Method Investment [Axis] Type of Equity Method Investment [Axis] Type of Equity Method Investment [Axis] Type of Equity Method Investment [Domain] Type of Equity Method Investment [Domain] [Domain] for Type of Equity Method Investment [Axis] Healthcare analytics company [Member] Healthcare analytics company [Member] Healthcare analytics company [Member] Revenue from Contract with Customer Revenue from Contract with Customer [Member] Medicare Revenue Medicare Revenue [Member] Medicare Revenue [Member] Organization, Consolidation and Presentation of Financial Statements [Line Items] Percent of net services revenue Number of owned and operated care centers Operating Care Centers Description containing the number of care centers owned by the entity as of the balance sheet date. Number of states with facilities Number of States in which Entity Operates Operating lease liability Minimum ownership percentage for controlling interest (percent) Minimum Percent Ownership For Controlling Interest Percent Description containing the percentage ownership required in order for a variable interest entity (VIE) to be consolidated in the entity's financial statements. Maximum ownership percentage for equity method investment (percent) Maximum Percent Ownership For Equity Method Percent Description containing the percentage ownership required in order for an investment to be treated under the equity method of accounting in the entity's financial statements. Equity method investment, aggregate cost Equity Method Investment, Aggregate Cost Maximum ownership percentage for cost method investment (percent) Maximum Percent Ownership For Cost Method Percent Description containing the percentage ownership required in order for an investment to be treated under the cost method of accounting in the entity's financial statements. Cover page. Document Type Document Type Document Quarterly Report Document Quarterly Report Document Period End Date Document Period End Date Document Transition Report Document Transition Report Entity File Number Entity File Number Entity Registrant Name Entity Registrant Name Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Entity Tax Identification Number Entity Tax Identification Number Entity Address, Street Name Entity Address, Address Line One Entity Address, Suite Entity Address, Address Line Two Entity Address, City Entity Address, City or Town Entity Address, State Entity Address, State or Province Entity Address, Postal Zip Code Entity Address, Postal Zip Code City Area Code City Area Code Local Phone Number Local Phone Number Title of each class Title of 12(b) Security Trading Symbol Trading Symbol Name of each exchange on which registered Security Exchange Name Entity Current Reporting Status Entity Current Reporting Status Entity Interactive Data Current Entity Interactive Data Current Entity Filer Category Entity Filer Category Entity Emerging Growth Company Entity Emerging Growth Company Entity Small Business Entity Small Business Entity Shell Company Entity Shell Company Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Amendment Flag Amendment Flag Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Entity Central Index Key Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Entity Voluntary Filers Entity Voluntary Filers Entity Well-known Seasoned Issuer Entity Well-known Seasoned Issuer SEGMENT INFORMATION Segment Reporting Disclosure [Text Block] Income Statement Location [Axis] Income Statement Location [Axis] Income Statement Location [Domain] Income Statement Location [Domain] Ownership [Axis] Ownership [Axis] Ownership [Domain] Ownership [Domain] Class of Stock [Axis] Class of Stock [Axis] Class of Stock [Domain] Class of Stock [Domain] Net service revenue Business Acquisition, Pro Forma Revenue Operating income (loss) Business acquisition pro forma operating income loss The pro forma operating income (loss) for the period as if the business combination or combinations had been completed at the beginning of a period. Net income Business Acquisition, Pro Forma Net Income (Loss) Basic earnings (loss) per share Business Acquisition, Pro Forma Earnings Per Share, Basic Diluted earnings (loss) per share Business Acquisition, Pro Forma Earnings Per Share, Diluted ACQUISITIONS Business Combination Disclosure [Text Block] Property and equipment, accumulated depreciation Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Intangible assets, accumulated amortization Finite-Lived Intangible Assets, Accumulated Amortization Preferred stock, par value (usd per share) Preferred Stock, Par or Stated Value Per Share Preferred stock, authorized (shares) Preferred Stock, Shares Authorized Preferred stock, issued (shares) Preferred Stock, Shares Issued Preferred stock, outstanding (shares) Preferred Stock, Shares Outstanding Common stock, par value (usd per share) Common Stock, Par or Stated Value Per Share Common stock, authorized (shares) Common Stock, Shares Authorized Common stock, issued (shares) Common Stock, Shares, Issued Common stock, outstanding (shares) Common Stock, Shares, Outstanding Treasury stock at cost (shares) Treasury Stock, Shares Lease cost Lease, Cost [Table Text Block] Operating leases Operating leases [Table Text Block] [Table Text Block] for Operating leases [Table] Finance leases Finance leases [Table Text Block] [Table Text Block] for Finance leases [Table] Supplemental Cash Flow Information and Non-Cash Activity for Leases Supplemental Cash Flow Information and Non-Cash Activity for Leases [Table Text Block] Supplemental Cash Flow Information and Non-Cash Activity for Leases [Table Text Block] Weighted average remaining lease term and discount rate Weighted average remaining lease term and discount rate [Table Text Block] [Table Text Block] for Weighted average remaining lease term and discount rate [Table] Lease Liability Maturity Lease Liability Maturity [Table Text Block] Lease Liability Maturity [Table Text Block] Schedule of Revenue by Payor Class Schedule of Revenue Sources, Health Care Organization [Table Text Block] Schedule of Fair Value of Financial Instruments Financial Instrument Details [Table Text Block] Financial instrument details, table. Schedule of Weighted-Average Shares Outstanding Schedule of Weighted Average Number of Shares [Table Text Block] Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Other Other Segments [Member] Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] General and administrative expenses General and Administrative Expense Operating expenses Promissory Notes [Member] Promissory Notes [Member] Promissory Notes [Member] Finance leases [Member] Capital Lease Obligations [Member] 100 Million Term Loan One Hundred Million Term Loan [Member] 100 Million Term Loan [Member] Deferred debt issuance costs Debt Issuance Costs, Net Long-term obligations, including current portion Long-term Debt Current portion of long-term obligations Long-term Debt, Current Maturities Long-term obligations, less current portion Long-term Debt, Excluding Current Maturities Number of reportable business segments Number of Reportable Segments Lessee, Lease, Description [Table] Lessee, Lease, Description [Table] Lessee, Lease, Description [Line Items] Lessee, Lease, Description [Line Items] Lessee, Operating Lease, Term of Contract Lessee, Operating Lease, Term of Contract Lessee, Finance Lease, Term of Contract Lessee, Finance Lease, Term of Contract Lessee, Operating Lease, Renewal Term Lessee, Operating Lease, Renewal Term Lessee, Operating Lease, Option to Terminate Lessee, Operating Lease, Option to Terminate Swing Line Loan [Member] Swing Line Loan [Member] Swing Line Loan [Member] Letter of Credit [Member] Letter of Credit [Member] Prior Credit Agreement [Member] Prior Credit Agreement [Member] Prior Credit Agreement [Member] Line of Credit [Member] Line of Credit [Member] Amended Credit Agreement [Member] Amended Credit Agreement [Member] Amended Credit Agreement [Member] Debt Instrument Periodic Payment Percentage Debt Instrument Periodic Payment Percentage The percentage of the Term Loan that is required as periodic payments including both interest and principal payments Proceeds Received From Loan Party Of Subsidiary Proceeds Received From Loan Party Of Subsidiary Proceeds Received From Loan Party Of Subsidiary Weighted average interest rate (percent) Long-term Debt, Weighted Average Interest Rate, over Time Consolidated leverage ratio Total Leverage Ratio Ratio of debt to earnings before interest, taxes, depreciation and amortization. Consolidated interest coverage ratio Consolidated Interest Coverage Ratio Ratio of adjusted earnings before interest, taxes, depreciation and amortization to cash interest charges Credit facility, maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Revolving Credit Facility Total Revolving Credit Facility Total Credit facility, maximum additional borrowing capacity Line Of Credit Facility Additional Borrowing Capacity Line Of Credit Facility Additional Borrowing Capacity Credit Facility Maximum Allowable Consolidated Leverage Ratio Multiple Credit Facility Maximum Allowable Consolidated Leverage Ratio Multiple Credit Facility, Maximum Allowable Consolidated Leverage Ratio Multiple Credit facility, maximum allowable consolidated leverage ratio Credit facility maximum allowable consolidated leverage ratio Credit facility maximum allowable consolidated leverage ratio as defined in the Company's Credit Agreement Principal payments of long-term obligations Additional interest rate above Federal Fund rate Debt Instrument Interest Additional Interest Above Federal Fund Rate Debt Instrument Interest Additional Interest Above Federal Fund Rate Additional interest rate above Eurodollar rate Debt Instrument Interest Additional Interest Above Eurodollar Rate Debt Instrument Interest Additional Interest Above Eurodollar Rate Percentage of consolidated revenue and adjusted EBITDA that guarantor wholly-owned subsidiaries represent Percentage Of Revenue And Of Earnings Before Interest Taxes Depreciation And Amortization From Wholly Owned Subsidiaries Percentage of consolidated net revenues and adjusted EBITDA that guarantor wholly-owned subsidiaries represent Percentage of adjusted EBITDA that guarantor subsidiaries represent Percentage Of Earnings Before Interest Taxes Depreciation And Amortization From Subsidiaries Percentage of adjusted EBITDA that guarantor subsidiaries represent Remaining availability under revolving credit facility Line of Credit Facility, Remaining Borrowing Capacity Outstanding letters of credit Letters of Credit Outstanding, Amount Description of variable rate basis Debt Instrument, Description of Variable Rate Basis SHARE REPURCHASE Treasury Stock [Text Block] Revenue Recognition, Multiple-deliverable Arrangements [Table] Revenue Recognition, Multiple-deliverable Arrangements [Table] Cap Year [Axis] Cap Year [Axis] Cap Year [Axis] Cap Year [Domain] Cap Year [Domain] Cap Year [Domain] Cap Year 2013 Through 2019 Cap Year Two Thousand Thirteen Through Two Thousand Nineteen [Member] Cap Year Two Thousand Thirteen Through Two Thousand Nineteen [Member] Episode of care as episodic-based revenue (days) Episode Of Care As Episodic Based Revenue Duration Description containing the number of days in a home health episode of care. Net service revenue episode payment rate (days) Net Service Revenue, Episode Payment Rate Duration Description containing the number of days from the date the request for anticipated payment was received in which the final bill must be submitted to Medicare. Percentage of total reimbursement of outlier payment Percentage Of Total Reimbursement Of Outlier Payment Percentage at which total reimbursement is capped if cost of care is unusually costly. Low utilization payment adjustment, maximum number of visits Low Utilization Payment Adjustment Number Of Visits Description containing the visit threshold for a low utilization payment adjustment. First threshold of therapy services required (visits) First Threshold Of Therapy Services Required Description containing the number of visits related to the first threshold of therapy services required. Second threshold of therapy services required (visits) Second Threshold Of Services Required Description containing the number of visits related to the second threshold of therapy services required. Third threshold of therapy services required (visits) Third Threshold Of Therapy Services Required Description containing the number of visits related to the third threshold of therapy services required. Non-Medicare revenue term rates Non-Medicare Revenue Term Rates Non-Medicare Revenue Term Rates as a percentage of Medicare Term Rates Hospice Medicare revenue rate accounted for routine care Hospice Medicare Revenue Rate Accounted For Routine Care Description containing the percentage of the entity's Hospice net Medicare service revenue that is derived from routine care. Estimated amounts due back to Medicare Estimated Amount Due Back To Medicare In Other Accrued Liabilities Estimate of obligations due Medicare upon demand due to overages for the inpatient cap and/or overall payment cap.