INTANGIBLES (Narrative 2) (Detail)	12 Months Ended
Dec. 31, 2018
Intangibles [Abstract]
Below market leases, weighted average remaining amortization, period	9 years

Represents remaining amortization period of below market leases intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

No definition available.

Name:	ohi_BelowMarketLeaseWeightedAverageRemainingAmortizationPeriod
Namespace Prefix:	ohi_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration