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Variable Interest Entities (Details) (USD $)
In Millions, unless otherwise specified
9 Months Ended
Sep. 30, 2014
Emeritus Community Venture with HCP - Operating Company [Member]
 
Variable Interest Entity [Line Items]  
Asset/Liability Type Investment in unconsolidated ventures
Maximum Exposure to Loss $ 193.0
Carrying Amount 193.0
Emeritus Community Venture with HCP - Real Estate Company [Member]
 
Variable Interest Entity [Line Items]  
Asset/Liability Type Investment in unconsolidated ventures
Maximum Exposure to Loss 71.6
Carrying Amount $ 71.6