Investments in and Advances to Unconsolidated Joint Ventures (Details) $ in Thousands | Sep. 25, 2015USD ($)item | Apr. 20, 2015claim | Mar. 30, 2015USD ($)property | Aug. 29, 2014USD ($)property | Sep. 30, 2015USD ($) | Sep. 30, 2015USD ($)item | Dec. 31, 2014USD ($) |
Company owned interests in entities, accounted under equity method: | | | | | | | |
Investments in and advances to unconsolidated joint ventures | | | | | $ 607,790 | $ 607,790 | $ 605,448 |
Number of unconsolidated joint ventures | item | | | | | | 3 | |
Cash paid | | | | | | $ 770,325 | |
Impairments of investments in unconsolidated joint ventures | | | | | (27,234) | $ (27,234) | |
Brookdale Senior Living | | | | | | | |
Company owned interests in entities, accounted under equity method: | | | | | | | |
Number of retirement communities contributed to joint venture | property | | | | 8 | | | |
CCRC JV | | | | | | | |
Company owned interests in entities, accounted under equity method: | | | | | | | |
Debt related to retirement communities or properties contributed | | | | $ 569,000 | | | |
CCRC JV | Senior housing | | | | | | | |
Company owned interests in entities, accounted under equity method: | | | | | | | |
Carrying value of properties contributed | | | | 92,000 | | | |
MBK Development JV | | | | | | | |
Company owned interests in entities, accounted under equity method: | | | | | | | |
Payment to acquire land | $ 3,000 | | | | | | |
Number of units to be built | item | 74 | | | | | | |
Brookdale Senior Living | | | | | | | |
Company owned interests in entities, accounted under equity method: | | | | | | | |
Cash paid | | | | $ 370,000 | | | |
Number of retirement communities contributed to joint venture | property | | | | 2 | | | |
Fair value of retirement communities or properties contributed | | | | $ 162,000 | | | |
Carrying value of properties contributed | | | | $ 92,000 | | | |
Brookdale Senior Living | CCRC JV | | | | | | | |
Company owned interests in entities, accounted under equity method: | | | | | | | |
Number of unconsolidated joint ventures | item | | | | | | 2 | |
CCRC JV Investment [Member] | Senior housing | | | | | | | |
Company owned interests in entities, accounted under equity method: | | | | | | | |
Investments in and advances to unconsolidated joint ventures | | | | | $ 447,658 | $ 447,658 | |
Investment ownership percentage | | | | | 49.00% | 49.00% | |
HCRMC | | | | | | | |
Company owned interests in entities, accounted under equity method: | | | | | | | |
New cases filed | claim | | 3 | | | | | |
HCRMC | Post-acute/skilled | | | | | | | |
Company owned interests in entities, accounted under equity method: | | | | | | | |
Investments in and advances to unconsolidated joint ventures | | | | | $ 21,238 | $ 21,238 | |
Investment ownership percentage | | | | | 9.00% | 9.00% | |
MBK JV and MBK Development JV | | | | | | | |
Company owned interests in entities, accounted under equity method: | | | | | | | |
Number of unconsolidated joint ventures | item | | | | | | 2 | |
MBK JV | | | | | | | |
Company owned interests in entities, accounted under equity method: | | | | | | | |
Debt related to retirement communities or properties contributed | | | $ 78,000 | | | | |
MBK JV | Senior housing | | | | | | | |
Company owned interests in entities, accounted under equity method: | | | | | | | |
Investments in and advances to unconsolidated joint ventures | | | | | $ 26,400 | $ 26,400 | |
Investment ownership percentage | | | 50.00% | | 50.00% | 50.00% | |
Number of campuses | property | | | 3 | | | | |
Cash paid | | | $ 27,000 | | | | |
MBK JV | MBK Senior Living [Member] | Senior housing | | | | | | | |
Company owned interests in entities, accounted under equity method: | | | | | | | |
Number of retirement communities contributed to joint venture | property | | | 3 | | | | |
Fair value of retirement communities or properties contributed | | | $ 126,000 | | | | |
MBK Development JV | | | | | | | |
Company owned interests in entities, accounted under equity method: | | | | | | | |
Investments in and advances to unconsolidated joint ventures | | | | | $ 1,824 | $ 1,824 | |
Investment ownership percentage | | | | | 50.00% | 50.00% | |
HCP Ventures III, LLC | Medical office | | | | | | | |
Company owned interests in entities, accounted under equity method: | | | | | | | |
Investments in and advances to unconsolidated joint ventures | | | | | $ 6,329 | $ 6,329 | |
Investment ownership percentage | | | | | 30.00% | 30.00% | |
HCP Ventures IV | Hospital and medical office segments | | | | | | | |
Company owned interests in entities, accounted under equity method: | | | | | | | |
Investments in and advances to unconsolidated joint ventures | | | | | $ 24,705 | $ 24,705 | |
Investment ownership percentage | | | | | 20.00% | 20.00% | |
HCP Life Science | Life science | | | | | | | |
Company owned interests in entities, accounted under equity method: | | | | | | | |
Investments in and advances to unconsolidated joint ventures | | | | | $ 68,834 | $ 68,834 | |
Number of unconsolidated joint ventures | item | | | | | | 3 | |
HCP Life Science | Life science | Minimum | | | | | | | |
Company owned interests in entities, accounted under equity method: | | | | | | | |
Investment ownership percentage | | | | | 50.00% | 50.00% | |
HCP Life Science | Life science | Maximum | | | | | | | |
Company owned interests in entities, accounted under equity method: | | | | | | | |
Investment ownership percentage | | | | | 63.00% | 63.00% | |
Torrey Pines Science Center, LP | | | | | | | |
Company owned interests in entities, accounted under equity method: | | | | | | | |
Investment ownership percentage | | | | | 50.00% | 50.00% | |
Torrey Pines Science Center, LP | Life science | | | | | | | |
Company owned interests in entities, accounted under equity method: | | | | | | | |
Investment ownership percentage | | | | | 50.00% | 50.00% | |
Britannia Biotech Gateway, LP | | | | | | | |
Company owned interests in entities, accounted under equity method: | | | | | | | |
Investment ownership percentage | | | | | 55.00% | 55.00% | |
Britannia Biotech Gateway, LP | Life science | | | | | | | |
Company owned interests in entities, accounted under equity method: | | | | | | | |
Investment ownership percentage | | | | | 55.00% | 55.00% | |
LASDK, LP | | | | | | | |
Company owned interests in entities, accounted under equity method: | | | | | | | |
Investment ownership percentage | | | | | 63.00% | 63.00% | |
LASDK, LP | Life science | | | | | | | |
Company owned interests in entities, accounted under equity method: | | | | | | | |
Investment ownership percentage | | | | | 63.00% | 63.00% | |
Vintage Park | Senior housing | | | | | | | |
Company owned interests in entities, accounted under equity method: | | | | | | | |
Investments in and advances to unconsolidated joint ventures | | | | | $ 5,745 | $ 5,745 | |
Investment ownership percentage | | | | | 85.00% | 85.00% | |
Suburban Properties, LLC | Medical office | | | | | | | |
Company owned interests in entities, accounted under equity method: | | | | | | | |
Investments in and advances to unconsolidated joint ventures | | | | | $ 4,861 | $ 4,861 | |
Investment ownership percentage | | | | | 67.00% | 67.00% | |
Advances to unconsolidated joint ventures, net | | | | | | | |
Company owned interests in entities, accounted under equity method: | | | | | | | |
Investments in and advances to unconsolidated joint ventures | | | | | $ 196 | $ 196 | |
RIDEA I OpCo | CCRC JV | | | | | | | |
Company owned interests in entities, accounted under equity method: | | | | | | | |
Number of campuses | property | | | | 14 | | | |