Dispositions, Real Property Held for Sale and Impairment - Genesis Healthcare (Details) $ in Thousands		1 Months Ended
	May 01, 2023 USD ($)	Mar. 31, 2021 USD ($) property	Sep. 30, 2023 USD ($)	Mar. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	[1]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Right of use assets, net			$ 338,693		$ 323,942
Lease liabilities			$ 365,115		$ 415,824
Gain from leasehold interest	$ 65,485
Joint Venture with Aurora Health Network, Peace Capital
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash from joint venture	104,240
Retained interest	$ 11,571
Genesis HealthCare Operating Relationship
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Property sold | property		7
Disposal consideration		$ 182,618
Right of use assets, net				$ 115,359
Lease liabilities				$ 66,530

[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.