Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2018	Feb. 19, 2019	Jun. 30, 2018
Document And Entity Information [Line Items]
Entity Registrant Name	OMEGA HEALTHCARE INVESTORS INC
Entity Central Index Key	0000888491
Trading Symbol	ohi
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Well-known Seasoned Issuer	Yes
Entity Common Stock Shares Outstanding		204,229,335
Entity Public Float			$ 6,210,297,921
Document Type	10-K
Document Period End Date	Dec. 31, 2018
Amendment Flag	false
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	FY
Entity Small Business	false
Entity Emerging Growth Company	false
Omega OP
Document And Entity Information [Line Items]
Entity Registrant Name	OHI Healthcare Properties Limited Partnership
Entity Central Index Key	0001639315
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Entity Well-known Seasoned Issuer	No
Entity Public Float			$ 0
Document Type	10-K
Document Period End Date	Dec. 31, 2018
Amendment Flag	false
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	FY
Entity Small Business	false
Entity Emerging Growth Company	false