Dispositions, Real Property Held for Sale and Impairment - Narrative (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024 USD ($) property	Jun. 30, 2023 USD ($) property	Jun. 30, 2024 USD ($) property	Jun. 30, 2023 USD ($) property	Dec. 31, 2023 USD ($)	[1]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Real estate held-for-sale | $	$ 81,033		$ 81,033		$ 372,883
Expected sale proceeds | $			95,250
Impairment of assets held for sale | $			41,157	$ 13,715
Income (loss) from real estate dispositions, net | $			$ (47,058)	$ 46,849
Sold or Held for sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income (loss) from real estate dispositions, net | $	$ (9,271)	$ 61,899
Seniors Housing Operating
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Properties classified as held for sale | property	8	2	8	2
Number of properties | property			9
Impairment of assets held for use | $			$ 4,568
Number of properties held for use | property			2	1
Triple-net
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Properties classified as held for sale | property		1		1
Number of properties held for use | property			1
Outpatient Medical
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Properties classified as held for sale | property	1		1

[1] The consolidated balance sheet at December 31, 2023 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.