Dispositions, Real Property Held for Sale and Impairment - Strategic Dissolution (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2025 USD ($) property	Mar. 31, 2026 USD ($) property	Dec. 31, 2025 USD ($)	[1]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net real estate investments		$ 57,803,161	$ 57,910,509
Chartwell Joint Venture, Disposal Transaction
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of properties | property		6
Property sold | property	16
Real estate property	$ 85,435
Noncontrolling Interest, decrease from deconsolidation	41,064
Gain (loss) on real estate dispositions	$ 53,354
Chartwell Joint Venture, Acquisition Transaction
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Property acquired | property	23
Net real estate investments	$ 474,384
Payment to acquire assets	77,385
Consideration transferred	396,999
Asset acquisition debt assumed	223,495
Equity method investments	78,538
Other liabilities acquired	$ 9,531
Chartwell Joint Venture
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of properties | property	39
Cogir Senior Living | Chartwell Joint Venture, Disposal Transaction
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of properties transitioned | property	2
Cogir Senior Living | Chartwell Joint Venture, Acquisition Transaction
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Property acquired | property	23

[1] The consolidated balance sheet at December 31, 2025 has been derived from the audited financial statements at that date but does not include all of the information and footnotes required by U.S. generally accepted accounting principles for complete financial statements.