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v3.21.2

Investments in and Advances to Unconsolidated Joint Ventures (Details) $ in Thousands | 1 Months Ended | 3 Months Ended | 9 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | ---
May 31, 2021 USD ($) property | Apr. 30, 2021 USD ($) property | Jan. 31, 2021 property | Sep. 30, 2021 USD ($) joint_venture property | Sep. 30, 2020 USD ($) property | Sep. 30, 2021 USD ($) property joint_venture | Sep. 30, 2020 USD ($) property | Dec. 31, 2020 USD ($) property joint_venture | Jan. 31, 2020 property
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |
Property count |  |  |  |  |  |  |  |  | 15
Investments in and advances to unconsolidated joint ventures | $ |  |  |  | $ 389,095 |  | $ 389,095 |  | $ 402,871 |
Discovery Naples JV |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |
Investment ownership percentage |  |  |  |  |  |  |  | 41.00% |
Discovery Sarasota JV |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |
Investment ownership percentage |  |  |  |  |  |  |  | 47.00% |
SWF SH JV |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |
Property count |  |  |  | 19 |  | 19 |  |  |
Investment ownership percentage |  |  |  | 54.00% |  | 54.00% |  |  |
Equity method investments | $ |  |  |  | $ 354,534 |  | $ 354,534 |  | $ 357,581 |
Life science joint ventures |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |
Property count |  |  |  | 1 |  | 1 |  |  |
Investment ownership percentage |  |  |  | 49.00% |  | 49.00% |  |  |
Equity method investments | $ |  |  |  | $ 25,135 |  | $ 25,135 |  | 24,879 |
Medical Office JVs |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |
Property count |  |  |  | 3 |  | 3 |  |  |
Equity method investments | $ |  |  |  | $ 9,426 |  | $ 9,426 |  | 9,673 |
Number of unconsolidated joint ventures (in joint ventures) | joint_venture |  |  |  | 3 |  | 3 |  |  |
Medical Office JVs | Minimum |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |
Investment ownership percentage |  |  |  | 20.00% |  | 20.00% |  |  |
Medical Office JVs | Maximum |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |
Investment ownership percentage |  |  |  | 67.00% |  | 67.00% |  |  |
HCP Ventures IV, LLC |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |
Investment ownership percentage |  |  |  | 20.00% |  | 20.00% |  |  |
HCP Ventures III, LLC |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |
Investment ownership percentage |  |  |  | 30.00% |  | 30.00% |  |  |
Suburban Properties, LLC |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |
Investment ownership percentage |  |  |  | 67.00% |  | 67.00% |  |  |
Other JVs |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |
Property count |  |  |  | 0 |  | 0 |  |  |
Equity method investments | $ |  |  |  | $ 0 |  | $ 0 |  | $ 9,157 |
CCRC JV |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |
Property count |  |  |  | 0 |  | 0 |  |  |
Investment ownership percentage | 49.00% |  |  |  |  |  |  | 49.00% | 49.00%
Equity method investments | $ |  |  |  | $ 0 |  | $ 0 |  | $ 1,581 |
Proceeds from sale of buildings | $ | $ 19,000 |  |  |  |  |  |  |  |
Otay Ranch |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |
Proceeds from sale of equity method investments | $ |  | $ 32,000 |  |  |  |  |  |  |
Otay Ranch | Discontinued Operations |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |
Gain on sale of unconsolidated joint venture | $ |  | $ 5,000 |  |  |  |  |  |  |
Otay Ranch | Equity Method Investment, Nonconsolidated Investee or Group of Investees |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |
Investment ownership percentage |  |  |  |  |  |  |  | 90.00% |
Equity method investments | $ |  |  |  |  |  |  |  | $ 6,000 |
Discovery Naples JV and Discovery Sarasota JV |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |
Number of unconsolidated joint ventures (in joint ventures) | joint_venture |  |  |  |  |  |  |  | 2 |
Brookedale MTCA | CCRC JV |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |
Number of assets to be sold | 2 |  |  |  |  |  |  |  |
Proceeds from sale of buildings | $ | $ 38,000 |  |  |  |  |  |  |  |
Other non-reportable |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |
Number of assets to be sold |  |  |  |  | 1 |  | 1 | 1 |
Proceeds from sale of buildings | $ |  |  |  |  | $ 1,000 |  | $ 1,000 | $ 1,000 |
Other non-reportable | Lessor Asset Under Operating Lease |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |
Property count |  |  |  |  |  |  |  | 1 |
Other non-reportable | Brookedale MTCA | Lessor Asset Under Operating Lease |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |
Property count |  |  |  |  |  |  |  |  | 13
SHOP |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |
Number of assets to be sold |  |  | 16 | 8 | 4 | 15 | 13 | 23 |
SHOP | Discovery SHOP Portfolio |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |
Number of assets to be sold |  | 10 |  |  |  |  |  |  |
Number of preferred equity method investments sold |  | 2 |  |  |  |  |  |  |

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