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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/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 275

-SubTopic 10

-Section 50

-Paragraph 18

-URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6351-108592

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 20

-URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13531-108611

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 275

-SubTopic 10

-Section 50

-Paragraph 20

-URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6404-108592

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 21

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13537-108611

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 323

-SubTopic 10

-Section 50

-Paragraph 3

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571

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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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Lease Modification And Transition Agreement, Amount

No definition available.

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Lease Modifications, Number Of Properties

No definition available.

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

No definition available.

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Number Of Properties Transitioned

No definition available.

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

No definition available.

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The number of properties sold by the entity.

No definition available.

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Number of States Accounting for More than Ten Percent of Net Operating Income

No definition available.

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The number of states accounting for more than ten percent of total revenues.

No definition available.

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Number of Potential Board Members

No definition available.

Name:	vtr_NumberofBoardMembers
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Number of Board Members Appointed

No definition available.

Name:	vtr_NumberofBoardMembersAppointed
Namespace Prefix:	vtr_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

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Name:	us-gaap_MajorCustomersAxis=vtr_KindredMember
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Name:	us-gaap_RealEstatePropertiesAxis=vtr_SeniorHousingCommunitiesMember
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Data Type:	na
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