Dispositions, Real Property Held for Sale and Impairment - Summary of Real Property Disposition Activity (Details) $ in Thousands	3 Months Ended	6 Months Ended
	Mar. 31, 2025 property	Jun. 30, 2025 USD ($) property	Jun. 30, 2024 USD ($) property
Real estate dispositions
Total dispositions		$ 659,315	$ 393,027
Gain (loss) on real estate dispositions and acquisitions of controlling interests, net		66,627	171,150
Net other assets/(liabilities) disposed		335	(78)
Non-cash consideration		(315,468)	(434,326)
Cash proceeds from real estate dispositions		$ 410,809	129,773
Number of properties contributed | property		10
Chartwell Joint Venture, Disposal Transaction
Real estate dispositions
Property sold | property	16	16
Seniors Housing Operating
Real estate dispositions
Total dispositions		$ 471,786	$ 353,290
Number of properties owned | property			6
Triple-net
Real estate dispositions
Total dispositions		181,988	$ 170
Outpatient Medical
Real estate dispositions
Total dispositions		$ 5,541	$ 39,567
Number of properties owned | property			1,000