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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.

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

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

No definition available.

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

No definition available.

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Continuing Revenues And NOI Threshold

No definition available.

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The number of properties that are managed by the independent third party.

No definition available.

Name:	vtr_NumberOfIndependentThirdPartyManagedProperties
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The number of provinces in which the entity operates as of the balance sheet date.

No definition available.

Name:	vtr_NumberOfProvincesInWhichEntityOperates
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Number Of States Accounting For More than Ten Percent Of Revenues And Net Operating Income

No definition available.

Name:	vtr_NumberOfStatesAccountingForMoreThanTenPercentOfRevenuesAndNetOperatingIncome
Namespace Prefix:	vtr_
Data Type:	xbrli:integerItemType
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Real Estate Properties, Number Of Renewal Extensions

No definition available.

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Data Type:	xbrli:integerItemType
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Real Estate Properties, Renewal Term

No definition available.