Represents stated maturity year of the mortgage loan receivable on real estate.

No definition available.

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- Definition

Represents the additional funds committed based on performance metrics.

+ References

No definition available.

+ Details

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- Definition

Percentage Of Mortgage Loan Fixed Annual Escalators

+ References

No definition available.

+ Details

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- Definition

Represents percentage of mortgage loan interest rate increase per annum.

+ References

No definition available.

+ Details

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- Definition

Interest rate of mortgage loan within investment in mortgage loan on real estate by entity with substantial portion of business acquiring and holding investment real estate or interest in real estate.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 12
-Paragraph Column B
-Subsection 29

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 948
-SubTopic 310
-Section S99
-Paragraph 1
-Subparagraph (SX 210.12-29(Column B))
-URI http://asc.fasb.org/extlink&oid=6589523&loc=d3e617274-123014

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Number of mortgage loans within investment in mortgage loan on real estate by entity with substantial portion of business acquiring and holding investment real estate or interest in real estate.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 12
-Footnote 3
-Subsection 29

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 948
-SubTopic 310
-Section S99
-Paragraph 1
-Subparagraph (SX 210.12-29(Footnote 3))
-URI http://asc.fasb.org/extlink&oid=6589523&loc=d3e617274-123014

+ Details

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- 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

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Data Type:	xbrli:stringItemType
Balance Type:	na
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- Definition

Amount of investment in mortgage loan on real estate by entity with substantial portion of business acquiring and holding investment real estate or interest in real estate.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 948
-SubTopic 310
-Section S99
-Paragraph 1
-Subparagraph (SX 210.12-29(Column G))
-URI http://asc.fasb.org/extlink&oid=6589523&loc=d3e617274-123014

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

- Definition

Amount, before allowance for credit loss, of financing receivable.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 5
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=119407570&loc=SL82919230-210447

+ Details

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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

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

- Details

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- Details

Name:	srt_MortgageLoansOnRealEstateLoanTypeAxis=ohi_MortgageNoteDue2029Member
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Data Type:	na
Balance Type:
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- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=ohi_MasterMortgageMember
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Data Type:	na
Balance Type:
Period Type:

- Details

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Data Type:	na
Balance Type:
Period Type:

- Details

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Balance Type:
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Name:	srt_RangeAxis=srt_MaximumMember
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MORTGAGE NOTES RECEIVABLE (Notes Due 2029 Narrative) (Detail) $ in Thousands		1 Months Ended	12 Months Ended
	Jun. 30, 2014 USD ($) property facility contract	Jun. 30, 2018 USD ($) property	Dec. 31, 2019 USD ($) facility	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage notes receivable			$ 773,563	$ 710,858	$ 671,232	$ 639,343
Number of real estate properties \| facility			987
Mortgage Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage notes receivable			$ 778,468	715,763
Mortgage Receivable [Member] \| Mortgage Note Due 2029 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage notes receivable			$ 526,520	$ 537,515
Mortgage loans on real estate, interest rate			10.08%
Maturity year			2029
Mortgage Receivable [Member] \| Mortgage Note Due 2029 [Member] \| Master Mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage notes receivable			$ 380,800
Mortgage loans on real estate, interest rate	9.00%		10.13%
Percentage of mortgage loan interest rate increase per annum	0.225%
Mortgage Receivable [Member] \| Mortgage Note Due 2029 [Member] \| Master Mortgage [Member] \| 17 Facilities
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage notes receivable	$ 117,000
Mortgage loans on real estate, number of loans \| contract	1
Mortgage Receivable [Member] \| Mortgage Note Due 2029 [Member] \| Master Mortgage [Member] \| 25 Facilities
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage notes receivable	$ 415,000
Maturity year			2029
Mortgage Receivable [Member] \| Mortgage Note Due 2029 [Member] \| Master Mortgage [Member] \| Minimum \| 17 Facilities
Accounts, Notes, Loans and Financing Receivable [Line Items]
Maturity year			2021
Mortgage Receivable [Member] \| Mortgage Note Due 2029 [Member] \| Master Mortgage [Member] \| Maximum \| 17 Facilities
Accounts, Notes, Loans and Financing Receivable [Line Items]
Maturity year			2023
Mortgage Receivable [Member] \| Mortgage Note Due 2029 [Member] \| Amended Master Mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage notes receivable			$ 101,700
Percentage of mortgage loan interest rate increase per annum	0.225%
Mortgage Receivable [Member] \| Mortgage Note Due 2029 [Member] \| Amended Master Mortgage [Member] \| Minimum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage loans on real estate, interest rate			8.50%
Percentage of mortgage loan fixed annual escalators			2.00%
Mortgage Receivable [Member] \| Mortgage Note Due 2029 [Member] \| Amended Master Mortgage [Member] \| Maximum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage loans on real estate, interest rate			10.00%
Percentage of mortgage loan fixed annual escalators			2.50%
Mortgage Receivable [Member] \| Mortgage Note Due 2029 [Member] \| Amended Master Mortgage [Member] \| Tranche Two [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Maturity year			2029
Mortgage Receivable [Member] \| Mortgage Note Due 2029 [Member] \| Second Amended Master Mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage receivable, additional funds committed			$ 9,600
Mortgage Receivable [Member] \| Mortgage Note Due 2029 [Member] \| Second Amended Master Mortgage [Member] \| 5 Facilities
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage notes receivable		$ 44,700
Mortgage notes receivable			$ 44,100
Mortgage loans on real estate, interest rate		9.50%
Percentage of mortgage loan interest rate increase per annum		0.225%
Mortgage Receivable [Member] \| Mortgage Note Due 2029 [Member] \| Construction Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Maturity year			2029
Facilities Covered by Mortgage and Used as Collateral [Member] \| Mortgage Receivable [Member] \| Mortgage Note Due 2029 [Member] \| 25 Facilities
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of real estate properties \| facility	25
Facilities Covered by Mortgage and Used as Collateral [Member] \| Mortgage Receivable [Member] \| Mortgage Note Due 2029 [Member] \| Master Mortgage [Member] \| 14 Facilities
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of real estate properties \| property	14
Facilities Covered by Mortgage and Used as Collateral [Member] \| Mortgage Receivable [Member] \| Mortgage Note Due 2029 [Member] \| Master Mortgage [Member] \| 17 Facilities
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of real estate properties \| property	17
Facilities Covered by Mortgage and Used as Collateral [Member] \| Mortgage Receivable [Member] \| Mortgage Note Due 2029 [Member] \| Second Amended Master Mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of real estate properties \| property		5