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Description of Business (Details) - community
Jul. 01, 2021
Mar. 31, 2022
Segment Reporting Information [Line Items]    
Number of senior living communities   678
Operating and financing leases, number of communities   298
Current Property Ownership Status    
Segment Reporting Information [Line Items]    
Number of communities owned   347
Operating and financing leases, number of communities   298
Number of communities managed by third party   33
Securities Purchase Agreement | HCA Healthcare, Inc. | Health Care Services    
Segment Reporting Information [Line Items]    
Sale of stock, percentage of ownership sold in transaction (as a percent) 80.00%  
Sale of stock, percentage of ownership after transaction (as a percent) 20.00%