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Equity Method Investment, Percentage of Additional Interest Acquired

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Gain (Loss) From Change Of Control

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Non Refundable Entrance Fee Liabilities

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Number Of Properties Acquired

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Real Estate And Intangible Assets

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Gain (loss) related to the termination of a contract between the parties. The termination may be due to many causes including early termination of a lease by a lessee, a breach of contract by one party, or a failure to perform.

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The net gain (loss) resulting from sales and other disposals of real estate owned for investment purposes.

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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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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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The number of real estate properties owned as of the balance sheet date.

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Value of input used to measure direct or indirect retained investment in derecognized group of assets constituting transfer of business or nonprofit activity, excluding conveyance of oil and gas mineral right and transfer of product or service in contract with customer.

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Master Transactions and Cooperation Agreement with Brookdale (Details)		1 Months Ended			12 Months Ended
	Jan. 31, 2020 USD ($) property	May 31, 2021 USD ($) property	Dec. 31, 2020 USD ($) property	Oct. 31, 2019 USD ($) property	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($) property	Jan. 31, 2021 property
Real Estate Properties [Line Items]
Property count \| property	15
Capital investment			$ 5,000,000			$ 5,000,000
Loss (gain) upon change of control, net					$ 1,042,000	159,973,000	$ 168,023,000
Long-term debt					6,169,989,000
Gain (loss) on sales of real estate, net					190,590,000	90,350,000	$ (40,000)
Other Non-Reporting Segment \| CCRC JV Investment
Real Estate Properties [Line Items]
Property count \| property				15
Senior Housing Triple Net
Real Estate Properties [Line Items]
Property count \| property				43
Number of assets sold \| property							2
Discount rate \| Minimum
Real Estate Properties [Line Items]
Real estate capitalization rate	0.10
Discount rate \| Maximum
Real Estate Properties [Line Items]
Real estate capitalization rate	0.12
Measurement Input Annual Rent Escalators \| Minimum
Real Estate Properties [Line Items]
Real estate capitalization rate	0.02
Measurement Input Annual Rent Escalators \| Maximum
Real Estate Properties [Line Items]
Real estate capitalization rate	0.03
Cap rate \| Minimum
Real Estate Properties [Line Items]
Real estate capitalization rate	0.07
Cap rate \| Maximum
Real Estate Properties [Line Items]
Real estate capitalization rate	0.09
CCRC JV Investment
Real Estate Properties [Line Items]
Investment ownership percentage	49.00%	49.00%					49.00%
Proceeds from sale of buildings		$ 19,000,000
Brookedale MTCA
Real Estate Properties [Line Items]
Number of properties disposed \| property	18
Cash proceeds	$ 385,000,000
Gain (loss) on sales of real estate, net	$ 164,000,000
Brookedale MTCA \| CCRC JV Investment
Real Estate Properties [Line Items]
Property count \| property	15
Number of properties acquired \| property	13
Equity method investments	$ 323,000,000
Real estate and intangible assets	1,800,000,000
Refundable entrance fee liabilities	308,000,000
Non refundable entrance fee liabilities	436,000,000		$ 484,000,000		$ 496,000,000	$ 484,000,000
Long-term debt	215,000,000
Working capital	48,000,000
Payments to acquire equity method investments	396,000,000
Brookedale MTCA \| CCRC JV Investment \| Other Nonoperating Income (Expense)
Real Estate Properties [Line Items]
Loss (gain) upon change of control, net	$ 170,000,000
Brookedale MTCA \| 2019 Amended Master Lease
Real Estate Properties [Line Items]
Number of properties to be restructured \| property	24							24
Number of leases to be terminated (in properties) \| property	1		1
Annual rent escalator	2.40%
Percent of sales proceeds	6.50%
Number of properties to be reallocated \| property	14
Amount of future rent to be paid	$ 20,000,000
Capital investment				$ 35,000,000
Capital investment term				5 years
Annual percentage increase				7.00%
Brookedale MTCA \| Other Non-Reporting Segment
Real Estate Properties [Line Items]
Property count \| property	13
Brookedale MTCA \| Other Non-Reporting Segment \| CCRC JV Investment
Real Estate Properties [Line Items]
Property count \| property	13
Brookedale MTCA \| CCRC JV Investment
Real Estate Properties [Line Items]
Interest acquired	51.00%
Purchase cost	$ 1,060,000,000.00
Non-cash lease and management fee termination loss (income), net	$ 100,000,000
Number of assets sold \| property		2
Proceeds from sale of buildings		$ 38,000,000