Investments in and Advances to Unconsolidated Joint Ventures (Details) $ in Thousands	1 Months Ended						3 Months Ended		6 Months Ended
	Aug. 31, 2022 USD ($) property	Jul. 31, 2022 USD ($)	Jan. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	May 31, 2021 USD ($) property	Jan. 31, 2021 facility	Jun. 30, 2022 USD ($) property joint_venture	Jun. 30, 2021 USD ($)	Jun. 30, 2021 USD ($)	Apr. 30, 2021 property	Mar. 31, 2021 joint_venture
Schedule of Equity Method Investments [Line Items]
Investments in and advances to unconsolidated joint ventures				$ 403,634			$ 402,154
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%
Medical Office JVs
Schedule of Equity Method Investments [Line Items]
Number of unconsolidated joint ventures (in joint ventures) | joint_venture							2
HCP Ventures IV, LLC
Schedule of Equity Method Investments [Line Items]
Investment ownership percentage							20.00%
Suburban Properties, LLC
Schedule of Equity Method Investments [Line Items]
Investment ownership percentage							67.00%
HCP Ventures III, LLC
Schedule of Equity Method Investments [Line Items]
Investment ownership percentage				30.00%
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
CCRC JV
Schedule of Equity Method Investments [Line Items]
Investment ownership percentage					49.00%
Proceeds from sale of property					$ 19,000
Brookedale MTCA | CCRC JV
Schedule of Equity Method Investments [Line Items]
Number of assets to be sold | property					2
Proceeds from sale of property					$ 38,000
Other Non-Reporting Segment | SWF SH JV
Schedule of Equity Method Investments [Line Items]
Property count | property							19
Investment ownership percentage							54.00%
Equity method investments				$ 355,394			$ 351,686
Life Science
Schedule of Equity Method Investments [Line Items]
Proceeds from sale of property			$ 14,000
Life Science | Life Science JV
Schedule of Equity Method Investments [Line Items]
Property count | property							1
Investment ownership percentage							49.00%
Equity method investments				$ 25,605			$ 26,719
Life Science | Needham Land Parcel JV
Schedule of Equity Method Investments [Line Items]
Property count | property							0
Investment ownership percentage				38.00%			38.00%
Equity method investments				$ 13,566			$ 14,831
Payments to acquire equity method investment				13,000
Life Science | Life Science JV in San Francisco, California | Subsequent Event
Schedule of Equity Method Investments [Line Items]
Property count | property	7
Investment ownership percentage	70.00%
Life Science | Life Science JV in San Francisco, California | Life Science JV in San Francisco, California | Subsequent Event
Schedule of Equity Method Investments [Line Items]
Investment ownership percentage	30.00%
Cash proceeds	$ 126,000
Medical Office
Schedule of Equity Method Investments [Line Items]
Proceeds from sale of property							$ 27,000	$ 21,000	$ 47,000
Medical Office | Subsequent Event
Schedule of Equity Method Investments [Line Items]
Proceeds from sale of property		$ 9,000
Medical Office | Medical Office JVs
Schedule of Equity Method Investments [Line Items]
Property count | property							3
Equity method investments				$ 9,069			$ 8,918
Medical Office | Medical Office JVs | Minimum
Schedule of Equity Method Investments [Line Items]
Investment ownership percentage							20.00%
Medical Office | Medical Office JVs | Maximum
Schedule of Equity Method Investments [Line Items]
Investment ownership percentage							67.00%
SHOP
Schedule of Equity Method Investments [Line Items]
Number of assets to be sold | facility						16
SHOP | Discovery SHOP Portfolio
Schedule of Equity Method Investments [Line Items]
Number of preferred equity method investments sold | property										2