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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Data Type:	xbrli:monetaryItemType
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Period Type:	instant

- Definition

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

+ References

No definition available.

+ Details

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- Definition

This element represents number of long term care facilities.

+ 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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Namespace Prefix:	ohi_
Data Type:	num:percentItemType
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- Definition

Represents percentage of mortgage loan interest rate increase per annum.

+ References

No definition available.

+ Details

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Namespace Prefix:	ohi_
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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

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Balance Type:	na
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- 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
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-Section S99
-Paragraph 1
-Subparagraph (SX 210.12-29(Footnote 3))
-URI http://asc.fasb.org/extlink&oid=6589523&loc=d3e617274-123014

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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
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- Definition

Amount before allowance of commercial loans issued to businesses to acquire, develop, construct, improve, or refinance land or building. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans covered under loss sharing agreements.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.7(a))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5066-111524

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-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.1(c))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

+ Details

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

- 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

- Details

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Namespace Prefix:
Data Type:	na
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MORTGAGE NOTES RECEIVABLE (Notes Due 2029 Narrative) (Detail) $ in Thousands		1 Months Ended	12 Months Ended
	Jun. 30, 2014 USD ($) contract property	Jun. 30, 2018 USD ($) property	Dec. 31, 2018 USD ($) contract property	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage notes receivable, gross			$ 715,763	$ 676,137
Mortgage notes receivable			$ 710,858	671,232	$ 639,343	$ 679,795
Mortgage Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage loans on real estate, number of loans \| property			6
Number of long term care facilities \| property			54
Mortgage Note Due 2029 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage notes receivable, gross			$ 537,515	$ 476,320
Mortgage loans on real estate, interest rate			9.87%
Maturity year			2029
Mortgage Note Due 2029 [Member] \| Master Mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage notes receivable, gross	$ 415,000
Mortgage notes receivable	$ 117,000		$ 409,300
Mortgage loans on real estate, number of loans \| contract	1
Mortgage loans on real estate, interest rate	9.00%		9.90%
Number of long term care facilities \| property	17		30
Number of additional facilities for mortgage financing \| property	14
Percentage of mortgage loan interest rate increase per annum	0.225%
Mortgage Note Due 2029 [Member] \| Amended Master Mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage notes receivable			$ 84,100
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 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 Note Due 2029 [Member] \| Amended Master Mortgage [Member] \| Tranche One [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Maturity year			2019
Mortgage Note Due 2029 [Member] \| Amended Master Mortgage [Member] \| Tranche Two [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Maturity year			2029
Mortgage Note Due 2029 [Member] \| Second Amended Master Mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage notes receivable, gross		$ 44,700
Mortgage notes receivable			$ 44,200
Mortgage loans on real estate, interest rate		9.50%
Number of additional facilities for mortgage financing \| property		5
Mortgage receivable, additional funds committed			9,600
Percentage of mortgage loan interest rate increase per annum		0.225%
Mortgage Note Due 2029 [Member] \| Construction Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage notes receivable, gross			$ 20,500
Mortgage loans on real estate, number of loans \| contract			2
Maturity year			2029