Financing accrual interest rate, expected percentage.

No definition available.

Name:	ohi_FinancingAccrualInterestRateExpectedPercentage
Namespace Prefix:	ohi_
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Balance Type:	na
Period Type:	instant

- Definition

Represents the number of beds.

+ References

No definition available.

+ Details

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

- Definition

Represents percentage of increase in annual cash yield.

+ References

No definition available.

+ Details

Name:	ohi_PercentageOfAnnualCashYieldIncreaseInYearOne
Namespace Prefix:	ohi_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents percentage of increase in annual cash yield, year three.

+ References

No definition available.

+ Details

Name:	ohi_PercentageOfAnnualCashYieldIncreaseInYearThree
Namespace Prefix:	ohi_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents percentage of increase in annual cash yield.

+ References

No definition available.

+ Details

Name:	ohi_PercentageOfAnnualCashYieldIncreaseInYearTwo
Namespace Prefix:	ohi_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents percentage of annual escalators.

+ References

No definition available.

+ Details

Name:	ohi_PercentageOfAnnualEscalators
Namespace Prefix:	ohi_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Purchase price of assets acquired.

+ References

No definition available.

+ Details

Name:	ohi_PurchasePriceOfAssetsAcquired
Namespace Prefix:	ohi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Represents amount related to noncash transactions consideration exchanged.

+ References

No definition available.

+ Details

Name:	ohi_SecScheduleIiiRealEstateNoncashConsiderationExchanged
Namespace Prefix:	ohi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of transaction costs incurred related to the non-cash acquisitions.

+ References

No definition available.

+ Details

Name:	ohi_TransactionCostsIncurredRelatedToNonCashAcquisitions
Namespace Prefix:	ohi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The number of real estate properties owned as of the balance sheet date.

+ References

No definition available.

+ Details

Name:	us-gaap_NumberOfRealEstateProperties
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of operating lease income from lease payments and variable lease payments paid and payable to lessor. Includes, but is not limited to, variable lease payments not included in measurement of lease receivable.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 30
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=124258985&loc=SL77919372-209981

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 30
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=123420820&loc=SL77919311-209978

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 270
-SubTopic 10
-Section 50
-Paragraph 6A
-URI http://asc.fasb.org/extlink&oid=124502072&loc=SL77927221-108306

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Minimum amount of other commitment not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in the taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions.

+ References

No definition available.

+ Details

Name:	us-gaap_OtherCommitment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The cash outflow from the acquisition of property as primarily intended to generate income for its owner.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3213-108585

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The cash outflow from the acquisition of real estate intended to generate income for the owner; excludes land acquired for use by the owner.

+ References

+ Details

Name:	us-gaap_PaymentsToAcquireLand
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

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.

+ References

No definition available.

+ Details

Name:	us-gaap_RealEstatePropertiesLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ohi_TwentyFourFacilitiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementGeographicalAxis=stpr_DC
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=ohi_MaplewoodRealEstateHoldingsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementScenarioAxis=us-gaap_ScenarioPlanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementScenarioAxis=ohi_ScenarioConstructionPhaseMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementScenarioAxis=ohi_ScenarioFollowingConstructionPhaseMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ohi_PropertyCategoryAxis=ohi_FacilitiesAcquiredMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ohi_SkilledNursingFacilitiesMember
Namespace Prefix:
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Period Type:

REAL ESTATE ACQUISITIONS (Narrative) (Details) $ in Thousands	3 Months Ended	12 Months Ended
	Sep. 30, 2021 USD ($) item	Dec. 31, 2021 USD ($) facility	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Jan. 20, 2021 USD ($) facility item
Real Estate Properties [Line Items]
Number of real estate properties \| facility		960
Rental income		$ 923,677	$ 753,427	$ 804,076
Payment to acquire land		10,600
Noncash consideration exchanged		58,600	19,100	750,600
Payments to acquire real estate		615,873	$ 105,663	$ 377,841
Transaction costs incurred related to the non-cash acquisitions		1,200
Total commitments		763,698
24 Facilities
Real Estate Properties [Line Items]
Purchase price of assets acquired					$ 511,300
Rental income		45,000
Number of beds \| item					2,552
DISTRICT OF COLUMBIA
Real Estate Properties [Line Items]
Total commitments		$ 177,700
Maplewood Real Estate Holdings \| DISTRICT OF COLUMBIA
Real Estate Properties [Line Items]
Payments to acquire real estate	$ 68,000
Total commitments	$ 177,700
Maplewood Real Estate Holdings \| DISTRICT OF COLUMBIA \| Scenario, Plan [Member]
Real Estate Properties [Line Items]
Number of beds \| item	174
Maplewood Real Estate Holdings \| DISTRICT OF COLUMBIA \| Scenario, Construction Phase [Member]
Real Estate Properties [Line Items]
Financing accrual interest rate, expected percentage	5.00%
Maplewood Real Estate Holdings \| DISTRICT OF COLUMBIA \| Scenario, Following Construction Phase [Member]
Real Estate Properties [Line Items]
Percentage of annual cash yield increase in year one	6.00%
Percentage of annual cash yield increase in year two	7.00%
Percentage of annual cash yield increase in year three	8.00%
Percentage of annual escalators	2.50%
Facilities Acquired \| Skilled Nursing Facilities [Member]
Real Estate Properties [Line Items]
Number of real estate properties \| facility					24
Facilities Acquired \| 24 Facilities
Real Estate Properties [Line Items]
Number of real estate properties \| facility					24