Name:	ohi_MaximumOwnershipPercentageByReitOfEitherDebtOrEquitySecuritiesOfAnotherCompany
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Period Type:	instant

Maximum ownership percentage of voting or value of any one security by REIT allowed per Sections 856 through 860 of the Internal Revenue Code.

No definition available.

Name:	ohi_MaximumOwnershipPercentageOfVotingOrValueOfAnyOneSecurityByReit
Namespace Prefix:	ohi_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Maximum percentage of assets invested in one or more taxable REIT subsidiaries.

No definition available.

Name:	ohi_MaximumPercentageOfAssetsInvestedInOneOrMoreTaxableReitSubsidiaries
Namespace Prefix:	ohi_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Represents maximum percentage of assets invested in one or more taxable REIT subsidiaries after December 31 2017.

No definition available.

Name:	ohi_MaximumPercentageOfAssetsInvestedInOneOrMoreTaxableReitSubsidiariesAfterDecember312017
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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Maximum percentage of interest in REIT that five or fewer individuals own directly or indirectly per Sections 856 through 860 of the Internal Revenue Code.

No definition available.

Name:	ohi_MaximumPercentageOfInterestInReitThatFiveOrFewerIndividualsOwnDirectlyOrIndirectly
Namespace Prefix:	ohi_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Minimum number of stockholders who own shares or interest in the REIT per Sections 856 through 860 of the Internal Revenue Code.

No definition available.

Name:	ohi_MinimumNumberOfStockholdersWhoOwnSharesOrInterestInReit
Namespace Prefix:	ohi_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

Minimum number of subsequent years the company may not be able to qualify as a REIT per Sections 856 through 860 of the Internal Revenue Code.

No definition available.

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

Number of subsidiaries merged into a single entity.

No definition available.

Name:	ohi_NumberOfSubsidiariesMergedIntoSingleEntity
Namespace Prefix:	ohi_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

Number of taxable REIT subsidiaries owned that pay federal, state and local income tax on their income at the applicable corporate rates.

No definition available.

Name:	ohi_NumberOfSubsidiariesOwned
Namespace Prefix:	ohi_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

Represents Number of subsidiary created REITs as per qualification rules.

No definition available.

Name:	ohi_NumberOfSubsidiaryCreatedReitsAsPerQualificationRules
Namespace Prefix:	ohi_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

Represents number of subsidiary elected for treated as TRSs.

No definition available.

Name:	ohi_NumberOfSubsidiaryElectedForTreatedAsTrss
Namespace Prefix:	ohi_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant

Represents percentage of net income derived from sell or disposal of property, other than foreclosure property that is held primarily for sale to customers in the ordinary course of a trade or business subject to federal taxation.

No definition available.

Name:	ohi_PercentageOfIncomeTaxable
Namespace Prefix:	ohi_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

The percentage of reduction in taxable income by using operating loss carry-forward.

No definition available.

Name:	ohi_PercentageOfReductionInTaxableIncomeAgainstOperatingLossCarryForward
Namespace Prefix:	ohi_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

The permitted ownership percent of taxable REIT stock in compliance of IRS REIT taxation rules.

No definition available.

Name:	ohi_PermittedOwnershipPercentOfTaxableReitStockPerIrsRules
Namespace Prefix:	ohi_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Required dividend distribution as a percent of REIT taxable income under Sections 856 through 860 of the Internal Revenue Code.

No definition available.

Name:	ohi_RequiredDividendDistributionAsPercentOfReitTaxableIncome
Namespace Prefix:	ohi_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Required dividend distribution by a REIT as a percent of net income from foreclosure property under Sections 856 through 860 of the Internal Revenue Code.

No definition available.

Name:	ohi_RequiredDividendDistributionByReitAsPercentOfNetIncomeFromForeclosureProperty
Namespace Prefix:	ohi_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Required percentage of gross income generated from qualifying sources under Sections 856 through 860 of the Internal Revenue Code.

No definition available.

Name:	ohi_RequiredPercentageOfGrossIncomeGeneratedFromQualifyingSources
Namespace Prefix:	ohi_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Required percentage of REIT income generated from real estate operations under Sections 856 through 860 of the Internal Revenue Code.

No definition available.

Name:	ohi_RequiredPercentageOfReitIncomeGeneratedFromRealEstate
Namespace Prefix:	ohi_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Required percentage of REIT qualifying assets under Sections 856 through 860 of the Internal Revenue Code.

No definition available.

Name:	ohi_RequiredPercentageOfReitQualifyingAssets
Namespace Prefix:	ohi_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

Name:	ohi_TaxesLineItems
Namespace Prefix:	ohi_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Amount of current state, local, and federal tax expense (benefit) pertaining to income (loss) from continuing operations.

No definition available.

Name:	us-gaap_CurrentFederalStateAndLocalTaxExpenseBenefit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section S99
-Paragraph 1
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-Publisher FASB
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-Publisher FASB
-Name Accounting Standards Codification
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Name:	us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Amount of current and deferred foreign income tax expense (benefit) attributable to income (loss) from continuing operations.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(h)(1))
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32559-109319

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Data Type:	xbrli:monetaryItemType
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A description of the limitations on the use of all operating loss carryforwards available to reduce future taxable income.

No definition available.