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LITIGATION (Details)
 1 Months Ended
Jun. 30, 2014
claim
Loss Contingencies [Line Items]  
Putative class actions were filed, number 13us-gaap_LossContingencyNewClaimsFiledNumber
Circuit Court for Baltimore City, Maryland  
Loss Contingencies [Line Items]  
Putative class actions were filed, number 10us-gaap_LossContingencyNewClaimsFiledNumber
/ us-gaap_LitigationCaseAxis
= vtr_CircuitCourtBaltimoreCityMarylandMember
Supreme Court of the State of New York, County of New York  
Loss Contingencies [Line Items]  
Putative class actions were filed, number 2us-gaap_LossContingencyNewClaimsFiledNumber
/ us-gaap_LitigationCaseAxis
= vtr_SupremeCourtStateOfNewYorkCountyOfNewYorkMember
United States District Court of Maryland  
Loss Contingencies [Line Items]  
Putative class actions were filed, number 1us-gaap_LossContingencyNewClaimsFiledNumber
/ us-gaap_LitigationCaseAxis
= vtr_UnitedStatesDistrictCourtMarylandMember