Commitments and Contingencies (Details) $ in Thousands	1 Months Ended	9 Months Ended
	Oct. 31, 2023 property	Sep. 30, 2023 USD ($) obligation	Dec. 31, 2022 USD ($)	[1]
Other Commitments [Line Items]
Number of outstanding credit obligations | obligation		24
Letter of credit obligation		$ 70,344
Outstanding construction financings for leased properties		1,338,076	$ 1,021,080
Additional financing to complete construction		1,480,711
Total contingent purchase obligations		588,234
Seniors Housing Operating Properties, Canada | Subsequent event
Other Commitments [Line Items]
Property acquired | property	12
Capital Improvements
Other Commitments [Line Items]
Total contingent purchase obligations		73,194
VIE
Other Commitments [Line Items]
Total loans made		789,328
Expected additional funding for investments		$ 134,735

[1] The consolidated balance sheet at December 31, 2022 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.