Document and Entity Information - USD ($) $ in Billions	12 Months Ended
	Dec. 31, 2021	Feb. 18, 2022	Jun. 30, 2021
Document And Entity Information [Abstract]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2021
Document Transition Report	false
Entity File Number	0-24260
Entity Registrant Name	AMEDISYS, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	11-3131700
Entity Address, Address Line One	3854 American Way, Suite A,
Entity Address, City or Town	Baton Rouge,
Entity Address, State or Province	LA
Entity Address, Postal Zip Code	70816
City Area Code	225
Local Phone Number	292-2031
Title of 12(b) Security	Common Stock, par value $0.001 per share
Security Exchange Name	NASDAQ
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Public Float			$ 6.9
Entity Common Stock, Shares Outstanding		32,525,719
Amendment Flag	false
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	FY
Trading Symbol	AMED
Entity Central Index Key	0000896262
Current Fiscal Year End Date	--12-31