ACCOUNTING POLICIES (Policies)	3 Months Ended
ACCOUNTING POLICIES (Policies)	Mar. 31, 2023
Accounting Policies [Abstract]
Basis of Accounting	The accompanying Consolidated Financial Statements have been prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) for interim financial information set forth in the Accounting Standards Codification (“ASC”), as published by the Financial Accounting Standards Board (“FASB”), and with the Securities and Exchange Commission (“SEC”) instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair statement of results for the interim period have been included. Operating results for the three months ended March 31, 2023 are not necessarily indicative of the results that may be expected for the year ending December 31, 2023. The accompanying Consolidated Financial Statements and related notes should be read in conjunction with the audited Consolidated Financial Statements and notes thereto included in our Annual Report on Form 10-K for the year ended December 31, 2022 (the “2022 Annual Report”). Certain prior period amounts have been reclassified to conform to the current period presentation.
Accounting Estimates	Accounting Estimates The preparation of financial statements in accordance with GAAP requires us to make estimates and assumptions regarding future events that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.
Principles of Consolidation	Principles of Consolidation The accompanying Consolidated Financial Statements include our accounts and the accounts of our wholly owned subsidiaries and the joint venture entities over which we exercise control. All intercompany transactions and balances have been eliminated in consolidation, and our net earnings are reduced by the portion of net earnings attributable to noncontrolling interests. GAAP requires us to identify entities for which control is achieved through means other than voting rights and to determine which business enterprise is the primary beneficiary of variable interest entities (“VIEs”). Substantially all of the assets of the VIEs are real estate investments, and substantially all of the liabilities of the VIEs are mortgage debt. Assets of the consolidated VIEs can only be used to settle obligations of such VIEs. Liabilities of the consolidated VIEs represent claims against the specific assets of the VIEs.
U.S. Department of Health & Human Services Grants	U.S. Department of Health & Human Services Grants We applied for grants under the Provider Relief Fund administered by the U.S. Department of Health & Human Services (“HHS”) on behalf of the assisted living communities in our SHOP reportable business segment to partially mitigate losses attributable to COVID-19. These grants are intended to reimburse eligible providers for expenses incurred to prevent, prepare for and respond to COVID-19 and lost revenues attributable to COVID-19. Recipients are not required to repay distributions from the Provider Relief Fund, provided that they attest to and comply with certain terms and conditions, including, not using grants received from the Provider Relief Fund to reimburse expenses or losses that other sources are obligated to reimburse, reporting and record keeping requirements and cooperating with any government audits.