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Property, Plant and Equipment and Leasehold Intangibles, Net - Narrative (Details)
$ in Millions
1 Months Ended 3 Months Ended
May 07, 2026
USD ($)
community
Mar. 31, 2026
USD ($)
community
Mar. 31, 2025
USD ($)
Property, Plant and Equipment [Line Items]      
Depreciation and amortization expense   $ 73.5 $ 91.0
Non-cash impairment charges   6.1 $ 1.8
Property, plant and equipment and leasehold intangibles, classified as held for sale   $ 75.2  
Subsequent Event      
Property, Plant and Equipment [Line Items]      
Number of communities sold | community 3    
Proceeds from sale of business, affiliate and productive assets $ 88.0    
Assisted Living And Memory Care Segment      
Property, Plant and Equipment [Line Items]      
Number of communities classified as held for sale | community   8  
CCRCs Segment      
Property, Plant and Equipment [Line Items]      
Number of communities classified as held for sale | community   1