Acquisitions, Dispositions, and Other Significant Leasing Transactions - Community Transactions and Completed Dispositions of Owned Communities (Details) $ in Thousands		12 Months Ended			36 Months Ended
	Jul. 26, 2020 community	Dec. 31, 2022 USD ($) community	Dec. 31, 2021 USD ($) community	Dec. 31, 2020 USD ($) community	Dec. 31, 2022 community
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Non-operating gain (loss) on sale of assets, net | $		$ 74,445	$ 288,835	$ 374,532
Ventas, Inc
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of owned communities transferred	5
Communities Disposed of Through Sale | Disposal Group, Held-for-sale or Disposed of by Sale, Not Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of communities disposed of		2	3	2
Net cash proceeds | $		$ 4,400	$ 16,500	$ 38,100
Communities Disposed of Through Lease Terminations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of communities disposed of	10	3	2	5
41 Communities Disposed of Through Lease Terminations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of communities disposed of					22
Communities Acquired Previously Leased or Managed
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of communities acquired					28
Number of communities, disposition					22
Number of communities, sales					7