Gross investment in facilities net of impairments and reserve for uncollectible loans.

No definition available.

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

- Definition

The number of third party tenants, mortgages and their affiliates who manage and/or operate the entity's properties.

+ References

No definition available.

+ Details

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

- Definition

Number of operators that met or exceeded ten percent of investments.

+ References

No definition available.

+ Details

Name:	ohi_NumberOfOperatorsThatMetOrExceededTenPercentOfInvestments
Namespace Prefix:	ohi_
Data Type:	xbrli:positiveIntegerItemType
Balance Type:	na
Period Type:	instant

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

- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 42
-URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e9054-108599

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6351-108592

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=123594938&loc=d3e13531-108611

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 21
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123594938&loc=d3e13537-108611

Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6404-108592

+ Details

Name:	us-gaap_ConcentrationRiskPercentage1
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=109237563&loc=d3e33749-111570

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 25
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8813-108599

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.12)
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

Name:	us-gaap_EquityMethodInvestments
Namespace Prefix:	us-gaap_
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

The number of states the entity operates in as of the balance sheet date.

+ References

No definition available.

+ Details

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

- Definition

Amount of investments classified as other.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.1(f,g))
-URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.12)
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

Name:	us-gaap_OtherInvestments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

CONCENTRATION OF RISK (Narrative) (Detail) $ in Thousands	12 Months Ended
CONCENTRATION OF RISK (Narrative) (Detail) $ in Thousands	Dec. 31, 2021 USD ($) facility item state contract	Dec. 31, 2020 USD ($) contract	Dec. 31, 2019 USD ($)	Jan. 01, 2020 USD ($)
Concentration Risk [Line Items]
Number of real estate properties	960
Number of operators that met or exceeded ten percent of investments \| contract	2	1
Number of states \| state	42
Number of operators \| item	63
Gross investment in facilities, net of impairments and reserves for uncollectible loans \| $	$ 10,100,000
Other investments \| $	469,884	$ 467,442	$ 419,228	$ 412,540
Investment in unconsolidated joint venture \| $	194,687	200,638
Variable Interest Entity, Not Primary Beneficiary [Member]
Concentration Risk [Line Items]
Other investments \| $	$ 230,768	$ 181,401
Revenue Benchmark [Member] \| Customer Concentration Risk [Member] \| Consulate Health Care
Concentration Risk [Line Items]
Concentration percentage	9.50%	9.40%	3.60%
Revenue Benchmark [Member] \| Customer Concentration Risk [Member] \| Ciena Healthcare [Member]
Concentration Risk [Line Items]
Concentration percentage	9.30%	9.90%	10.50%
Revenue Benchmark [Member] \| Customer Concentration Risk [Member] \| Maplewood Real Estate Holdings \| Variable Interest Entity, Not Primary Beneficiary [Member]
Concentration Risk [Line Items]
Concentration percentage	7.90%	5.40%	4.40%
Assets, Total [Member] \| Geographic Concentration Risk [Member] \| Florida
Concentration Risk [Line Items]
Concentration percentage	15.00%
Assets, Total [Member] \| Geographic Concentration Risk [Member] \| Texas
Concentration Risk [Line Items]
Concentration percentage	10.00%
Assets, Total [Member] \| Geographic Concentration Risk [Member] \| Michigan
Concentration Risk [Line Items]
Concentration percentage	6.00%
Assets, Total [Member] \| Product Concentration Risk [Member] \| Real Estate Investment
Concentration Risk [Line Items]
Concentration percentage	98.00%
Skilled Nursing Facilities [Member]
Concentration Risk [Line Items]
Number of real estate properties	685
Assisted Living Facilities [Member]
Concentration Risk [Line Items]
Number of real estate properties	133
Specialty [Member]
Concentration Risk [Line Items]
Number of real estate properties	16
Medical Office Building [Member]
Concentration Risk [Line Items]
Number of real estate properties	2
Independent Living Facilities [Member]
Concentration Risk [Line Items]
Number of real estate properties	20
Facilities Under Fixed Rate Mortgage Loans [Member] \| Skilled Nursing Facilities [Member]
Concentration Risk [Line Items]
Number of real estate properties	59
Facilities Under Fixed Rate Mortgage Loans [Member] \| Assisted Living Facilities [Member]
Concentration Risk [Line Items]
Number of real estate properties	2
Facilities Under Fixed Rate Mortgage Loans [Member] \| Specialty [Member]
Concentration Risk [Line Items]
Number of real estate properties	2
Facilities Held for Sale or Closed [Member]
Concentration Risk [Line Items]
Number of real estate properties	41