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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

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- Definition Amount of gain (loss) on sale or disposal of assets, including but not limited to property plant and equipment, intangible assets and equity in securities of subsidiaries or equity method investee. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585 + Details
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- Definition Aggregate cash proceeds received from a combination of transactions in which noncurrent assets are sold, which may include the sale of a business, an investment in an affiliate (including an equity method investee), property, plant and equipment and intangible assets. Excludes sales of trading, available-for-sale, and held-to-maturity securities. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3179-108585 + Details
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