Represents compensation percentage for sale of shares.

No definition available.

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

- Definition

The maximum aggregate gross sales price of shares to be sold in an equity distribution agreement.

+ References

No definition available.

+ Details

Name:	ohi_EquityDistributionAgreementGrossSalesPriceMaximum
Namespace Prefix:	ohi_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The gross cash inflow from the additional capital contribution to the entity.

+ References

No definition available.

+ Details

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

- Definition

Average per share amount of equity securities issued.

+ References

No definition available.

+ Details

Name:	ohi_SharesIssuedAveragePricePerShare
Namespace Prefix:	ohi_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	duration

- Definition

The cash outflow for cost incurred directly with the issuance of an equity security.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3291-108585

+ Details

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

- Definition

The cash inflow from the additional capital contribution to the entity.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3255-108585

+ Details

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

- Definition

Number of new stock issued during the period.

+ References

Reference 1: 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(29))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=123467817&loc=d3e21463-112644

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770

Reference 4: 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(28))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

Name:	us-gaap_StockIssuedDuringPeriodSharesNewIssues
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_SubsidiarySaleOfStockAxis=ohi_EquityShelfProgram500MillionAnd1BillionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_SubsidiarySaleOfStockAxis=ohi_EquityShelfProgram500MillionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_SubsidiarySaleOfStockAxis=ohi_EquityShelfProgram1BillionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

STOCKHOLDERS EQUITY (At The Market Program Schedule and Narrative) (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions		3 Months Ended	12 Months Ended
	Sep. 03, 2015	Jun. 30, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
$500 Million and $1 Billion ATM Programs
Issuance of common stock (in shares)			4.2	4.2	3.1
Average issue price per share			$ 36.53	$ 36.16	$ 34.79
Gross proceeds			$ 155.1	$ 155.1	$ 112.2
Commissions			3.4	2.5	3.2
Proceeds from issuance of common stock			$ 151.7	$ 152.6	$ 109.0
$500 Million ATM Program
Sales price, equity distribution agreement	$ 500.0
$1 Billion ATM Program
Sales price, equity distribution agreement		$ 1,000.0
Maximum [Member] \| $500 Million ATM Program
Compensation percentage for sale of shares	2.00%
Maximum [Member] \| $1 Billion ATM Program
Compensation percentage for sale of shares		2.00%