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Variable Interest Entities (Details) - Jun. 30, 2015 - USD ($)
$ in Millions
Total
CCRC Venture opco [Member]  
Variable Interest Entity [Line Items]  
Maximum Exposure to Loss $ 189.2
Carrying Amount $ 189.2
Percentage ownership in unconsolidated joint ventures 51.00%
HCP 49 Venture opco and propco [Member]  
Variable Interest Entity [Line Items]  
Maximum Exposure to Loss $ 71.4
Carrying Amount $ 71.4
Percentage ownership in unconsolidated joint ventures 20.00%
Other Ventures [Member]  
Variable Interest Entity [Line Items]  
Maximum Exposure to Loss $ 6.5
Carrying Amount $ 2.9
Percentage ownership in unconsolidated joint ventures 10.00%