The carrying amount of assets an investment adviser manages on behalf of investors.

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

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The cash outflow associated with the purchase of real estate held-for-investment and real estate joint ventures.

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The carrying amount of investments in unconsolidated real estate and other joint ventures not separately presented. This includes direct and indirect investments.

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Non-mortgage Loans Receivable, Net

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Number of Potential Board Members

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Number Of Board Members Appointed

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Remaining Ownership Percentage Retained By Investee

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INVESTMENTS IN UNCONSOLIDATED ENTITIES (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021 USD ($) board_member property	Sep. 30, 2020 USD ($)	Sep. 30, 2021 USD ($) board_member property	Sep. 30, 2020 USD ($)	Dec. 31, 2020 USD ($)	Oct. 15, 2020 USD ($) property
Equity method investments
Number of Properties Held for Sale \| property	1,300		1,300
Non-mortgage loans receivable, net	$ 63,989		$ 63,989		$ 57,077
Real Estate Investments, Unconsolidated Real Estate and Other Joint Ventures	$ 507,880		$ 507,880		$ 443,688
Atria
Equity method investments
Ownership percentage	34.00%		34.00%
Number of board members appointed \| board_member	2		2
Number of board members \| board_member	6		6
Ardent
Equity method investments
Ownership percentage	9.80%		9.80%
Number of board members appointed \| board_member	1		1
Number of board members \| board_member	11		11
Eclipse Senior Living
Equity method investments
Ownership percentage	34.00%		34.00%
Number of board members appointed \| board_member	2		2
Number of board members \| board_member	6		6
Remaining ownership percentage retained by investee	66.00%		66.00%
Other 2020 acquisitions \| The Fund
Equity method investments
Number of Properties Held for Sale \| property						2
Assets under Management, Carrying Amount						$ 2,100,000
Payments to Acquire Real Estate and Real Estate Joint Ventures	$ 272,000
Management Service
Equity method investments
Management fees	$ 3,200	$ 1,500	$ 8,900	$ 3,900
Unconsolidated Properties \| The Fund
Equity method investments
Ownership percentage	21.10%		21.10%		22.90%
Real Estate Investments, Unconsolidated Real Estate and Other Joint Ventures	$ 271,494		$ 271,494		$ 279,983
Unconsolidated Properties \| VTRAZ JV
Equity method investments
Ownership percentage	22.90%		22.90%		22.80%
Real Estate Investments, Unconsolidated Real Estate and Other Joint Ventures	$ 30,277		$ 30,277		$ 34,690
Unconsolidated Properties \| R&I JV
Equity method investments
Ownership percentage	51.00%		51.00%		50.30%
Real Estate Investments, Unconsolidated Real Estate and Other Joint Ventures	$ 200,311		$ 200,311		$ 123,445
Unconsolidated Properties \| Ventas Investment Management Platform (VIM)
Equity method investments
Real Estate Investments, Unconsolidated Real Estate and Other Joint Ventures	502,082		502,082		438,118
Unconsolidated Properties \| Equity Method Investment, Nonconsolidated Investee, Other
Equity method investments
Real Estate Investments, Unconsolidated Real Estate and Other Joint Ventures	$ 5,798		$ 5,798		$ 5,570
Unconsolidated Properties \| Equity Method Investment, Nonconsolidated Investee, Other \| Minimum
Equity method investments
Ownership percentage	34.00%		34.00%		34.00%
Unconsolidated Properties \| Equity Method Investment, Nonconsolidated Investee, Other \| Maximum
Equity method investments
Ownership percentage	50.00%		50.00%		50.00%