Equity Method Investment, Partner's Ownership Percentage

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Gain (Loss) From Change Of Control

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Gain (Loss) From Change Of Control, Net Of Tax

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Gain (Loss) From Change Of Control, Tax

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Number Of Adjacent Sites Currently Held

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Represents number of assets sold or transited per definitive agreements.

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Number Of Properties Acquired

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- Definition

Payments To Acquire Outstanding Equity Interests

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Area of land held.

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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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Fair value portion of investments in an entity not consolidated. Includes, but is not limited to, investments in an entity that is affiliated with the reporting entity by means of direct or indirect ownership, an entity in which the reporting entity shares control of the entity with another party or group, an entity which the company has significant influence, but does not have control and subsidiaries that are not required to be consolidated and are accounted for using the equity or cost method.

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Cash outflow related to amounts given in advance to show or confirm an intention to complete an acquisition of land, buildings, other structures, or any item classified as real estate.

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The cash outflow from the acquisition of real estate intended to generate income for the owner; excludes land acquired for use by the owner.

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The cash outflow from the acquisition of a piece of land, anything permanently fixed to it, including buildings, structures on it and so forth; includes real estate intended to generate income for the owner; excludes real estate acquired for use by the owner.

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Real Estate Transactions - Real Estate Investments (Details) $ in Thousands		1 Months Ended									3 Months Ended	9 Months Ended		12 Months Ended
	Nov. 03, 2020 USD ($)	Oct. 31, 2020 USD ($) a property	Sep. 30, 2020 USD ($)	Jul. 31, 2020 USD ($) property	Apr. 30, 2020 USD ($)	Dec. 31, 2019 USD ($) property asset	Jul. 31, 2019 USD ($) property facility	Jun. 30, 2019 USD ($) property	May 31, 2019 USD ($) property	Apr. 30, 2019 USD ($) property	Mar. 31, 2019 USD ($)	Sep. 30, 2020 USD ($)	Sep. 30, 2019 USD ($)	Dec. 31, 2019 USD ($) property	Dec. 31, 2018 property
Real Estate [Line Items]
Debt assumed			$ 6,420,792									$ 6,420,792
Loss (gain) upon change of control, net												$ 173,222	$ 11,481
SHOP JV
Real Estate [Line Items]
Loss (gain) upon change of control, net						$ 161,000
Assets Leased to Others
Real Estate [Line Items]
Number of assets transitioned \| property															37
SHOP JV
Real Estate [Line Items]
Investment ownership percentage			54.00%									54.00%
Purchase cost						$ 367,000								$ 367,000
Partnership investment ownership percentage						46.50%								46.50%
Mortgage Debt
Real Estate [Line Items]
Debt assumed			$ 420,792				$ 112,000		$ 50,000			$ 420,792
Massachusetts \| Subsequent Event
Real Estate [Line Items]
Payments to acquire real estate		$ 54,000
Massachusetts \| Life science joint ventures \| Subsequent Event
Real Estate [Line Items]
Investment ownership percentage		49.00%
San Francisco, California \| Subsequent Event
Real Estate [Line Items]
Payments for deposits on real estate acquisitions	$ 10,000
Area of land \| a		12
Payments to acquire land		$ 128,000
Number of adjacent sites currently held \| property		2
Life science \| Life science facility
Real Estate [Line Items]
Payments to acquire real estate											$ 71,000
Life science \| Land
Real Estate [Line Items]
Payments to acquire real estate											$ 27,000
Life science \| Massachusetts
Real Estate [Line Items]
Payments to acquire real estate					$ 320,000
Life science \| Massachusetts \| Subsequent Event
Real Estate [Line Items]
Payments to acquire real estate		$ 610,000
Number of properties acquired \| property		3
Payments for deposits on real estate acquisitions		$ 20,000
Life science \| Boston \| Life science facility
Real Estate [Line Items]
Payments to acquire real estate							$ 228,000
Number of properties acquired \| facility							4
Life science \| Cambridge \| Life science facility
Real Estate [Line Items]
Payments to acquire real estate						$ 333,000
Number of properties acquired \| asset						1
Life science \| San Diego
Real Estate [Line Items]
Number of properties acquired \| property														1
Life science \| San Diego \| Life science facility
Real Estate [Line Items]
Payments to acquire real estate														$ 16,000
Medical office
Real Estate [Line Items]
Number of properties acquired \| property				1
Medical office \| ARIZONA
Real Estate [Line Items]
Payments to acquire real estate				$ 27,000
Medical office \| Indiana, Missouri, Illinois
Real Estate [Line Items]
Payments for deposits on real estate acquisitions			$ 9,000
Medical office \| Indiana, Missouri, Illinois \| Subsequent Event
Real Estate [Line Items]
Payments to acquire real estate		$ 169,000
Number of properties acquired \| property		7
Medical office \| Kansas
Real Estate [Line Items]
Payments to acquire real estate														$ 15,000
Number of properties acquired \| property														1
Medical office \| Texas
Real Estate [Line Items]
Payments to acquire real estate														$ 9,000
Number of properties acquired \| property														1
Life science joint ventures
Real Estate [Line Items]
Payments to acquire real estate								$ 245,000
Number of properties acquired \| property								2
Senior Housing \| Vintage Park JV
Real Estate [Line Items]
Number of properties acquired \| property								1
Investment ownership percentage								100.00%
Payments to acquire outstanding equity interests								$ 24,000
Gain (loss) from change of control, net								12,000
Gain on consolidation, tax								$ 1,000
Senior Housing \| Senior Housing
Real Estate [Line Items]
Payments to acquire real estate							$ 284,000		$ 113,000	$ 445,000
Number of properties acquired \| property							5		3	9
SHOP \| Assets Leased to Others
Real Estate [Line Items]
Number of assets transitioned \| property															20
SHOP \| SHOP JV
Real Estate [Line Items]
Investment ownership percentage						53.50%								53.50%
Purchase cost						$ 790,000								$ 790,000
SHOP \| SHOP JV \| Assets Leased to Others
Real Estate [Line Items]
Number of assets transitioned \| property						19