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 book value of investments in real estate joint ventures including direct and indirect investments.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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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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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Investments in Unconsolidated Entities - Summary of Investments in Unconsolidated Entities (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Schedule of Equity Method Investments [Line Items]
Investments in unconsolidated entities	$ 1,636,531	$ 1,499,790
Seniors Housing Operating
Schedule of Equity Method Investments [Line Items]
Investments in unconsolidated entities	$ 1,248,774	1,171,307
Seniors Housing Operating \| Minimum
Schedule of Equity Method Investments [Line Items]
Ownership percentage	10.00%
Seniors Housing Operating \| Maximum
Schedule of Equity Method Investments [Line Items]
Ownership percentage	95.00%
Triple-net
Schedule of Equity Method Investments [Line Items]
Investments in unconsolidated entities	$ 147,679	111,812
Triple-net \| Minimum
Schedule of Equity Method Investments [Line Items]
Ownership percentage	10.00%
Triple-net \| Maximum
Schedule of Equity Method Investments [Line Items]
Ownership percentage	88.00%
Outpatient Medical
Schedule of Equity Method Investments [Line Items]
Investments in unconsolidated entities	$ 240,078	$ 216,671
Outpatient Medical \| Minimum
Schedule of Equity Method Investments [Line Items]
Ownership percentage	15.00%
Outpatient Medical \| Maximum
Schedule of Equity Method Investments [Line Items]
Ownership percentage	50.00%