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Investments in Unconsolidated Entities - Narrative (Details)	12 Months Ended
	Dec. 31, 2024 USD ($) property	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Jan. 31, 2025 USD ($)	Jun. 30, 2023
Schedule of Equity Method Investments [Line Items]
Impairment losses	$ 0	$ 35,293,000	$ 0
Aggregate unamortized basis difference of joint venture investments	$ 190,955,000
Number of real estate properties \| property	2,119
Investments in unconsolidated entities	$ 1,768,772,000	1,636,531,000
Revera Joint Venture Disposal Transaction
Schedule of Equity Method Investments [Line Items]
Impairment of assets held for sale		28,708,000
VIE
Schedule of Equity Method Investments [Line Items]
Number of real estate properties \| property	25
VIE, Primary Beneficiary
Schedule of Equity Method Investments [Line Items]
Loans related to development and construction of certain properties	$ 941,216,000
Additional fund obligated related to investments	$ 108,765,000
Sunrise
Schedule of Equity Method Investments [Line Items]
Investment percentage including new acquisition					34.00%
Management fees		$ 14,185,000	$ 27,660,000
U.S. Seniors Housing Properties \| Subsequent Event
Schedule of Equity Method Investments [Line Items]
Investments in unconsolidated entities				$ 2,000,000,000