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Indebtedness - Narrative (Details)
1 Months Ended 12 Months Ended
Feb. 24, 2025
USD ($)
property
Feb. 21, 2025
USD ($)
Jan. 31, 2025
USD ($)
property
Dec. 31, 2023
USD ($)
property
Dec. 31, 2024
USD ($)
property
Dec. 31, 2023
USD ($)
property
Dec. 31, 2022
USD ($)
May 31, 2024
USD ($)
property
Dec. 21, 2023
USD ($)
Debt Instrument                  
Number of properties owned (property) | property         367        
Redemption of senior notes         $ 120,000,000 $ 250,000,000 $ 500,000,000    
Gross book value         5,016,878,000        
Cash and cash equivalents       $ 245,939,000 $ 144,584,000 $ 245,939,000 $ 658,065,000    
Subsequent Event                  
Debt Instrument                  
Proceeds from loans secured by unencumbered properties   $ 276,000,000              
Additional proceeds for loans secured by unencumbered properties   $ 64,000,000              
Disposal Group, Disposed of by Sale, Not Discontinued Operations                  
Debt Instrument                  
Number of properties owned (property) | property       8 5 8      
Sale price of property sold and agreed to be sold         $ 35,675,000 $ 18,880,000      
Held for sale                  
Debt Instrument                  
Number of properties owned (property) | property         32        
Number of real estate properties under agreement | property         26        
Held for sale | Life Sciences Property And Senior Living Communities, Debt Redemption                  
Debt Instrument                  
Number of properties owned (property) | property         3        
Held for sale | Subsequent Event                  
Debt Instrument                  
Sale price of property sold and agreed to be sold $ 219,580,000                
Number of real estate properties under agreement | property 26                
Unsecured Debt, Not Guaranteed                  
Debt Instrument                  
Principal amount of debt         $ 1,100,000,000        
Credit Facility | Unsecured Debt                  
Debt Instrument                  
Unsecured revolving credit facility, maximum borrowing capacity                 $ 450,000,000
Weighted average interest rate on debt (as a percent)       7.90%   7.90% 4.50%    
Senior Secured Note Due 2026 | Disposal Group, Disposed of by Sale, Not Discontinued Operations | Subsequent Event | Life Sciences Property And Senior Living Communities, Debt Redemption                  
Debt Instrument                  
Number of properties owned (property) | property     3            
Sale price of property sold and agreed to be sold     $ 159,025,000            
Senior Secured Note Due 2026 | Held for sale | Subsequent Event                  
Debt Instrument                  
Number of real estate properties under agreement | property 19                
Redemption of senior notes $ 142,100,000                
Senior Secured Note Due 2026 | Secured Debt                  
Debt Instrument                  
Principal amount of debt       $ 940,534,000 $ 940,534,000 $ 940,534,000      
Interest rate (as a percent)         0.00%        
Equity interest in each collateral guarantee         100.00%        
Accreted value increase rate         11.25%        
Amortization of debt discount         $ 86,778,000 $ 2,720,000      
Proceeds from debt       $ 730,359,000          
Senior Unsecured Notes 9.75 Percent Due 2025 | Unsecured Debt                  
Debt Instrument                  
Principal amount of debt         $ 380,000,000        
Interest rate (as a percent)         9.75%        
Senior Unsecured Notes 9.75 Percent Due 2025 | Senior Notes                  
Debt Instrument                  
Principal amount of debt         $ 380,000,000        
Interest rate (as a percent)         9.75%        
Senior Unsecured Notes 4.375 Percent Due 2031 | Senior Notes                  
Debt Instrument                  
Principal amount of debt         $ 500,000,000        
Interest rate (as a percent)         4.375%        
Mortgages                  
Debt Instrument                  
Principal amount of debt               $ 120,000,000  
Interest rate (as a percent)               6.864%  
Mortgages | Medical Office And Life Science                  
Debt Instrument                  
Number of properties owned (property) | property               8