v3.26.1
Loans - Narrative (Details)
 1 Months Ended 3 Months Ended 6 Months Ended
Mar. 31, 2026
USD ($)
Feb. 28, 2026
USD ($)
Jan. 31, 2026
USD ($)
Jun. 30, 2026
USD ($)
loan
Mar. 31, 2026
USD ($)
Jun. 30, 2026
USD ($)
loan
Jun. 30, 2025
USD ($)
loan
Dec. 31, 2025
USD ($)
Financing Receivable, Allowance for Credit Loss [Line Items]                
Carrying Value       $ 22,453,605,000   $ 22,453,605,000   $ 21,627,097,000
Properties, net       3,998,669,000   3,998,669,000   3,448,652,000
Liabilities       53,862,850,000   53,862,850,000   55,693,851,000
Loan foreclosures           $ 342,284,000 $ 190,366,000  
Other Modifications                
Financing Receivable, Allowance for Credit Loss [Line Items]                
Number of loans modified | loan           3    
Amortized cost basis of loans modified       482,400,000   $ 482,400,000 $ 0  
Number of loans in portfolio modified | loan           4    
Loan paid off in period       113,500,000        
Non-Credit Deterioration                
Financing Receivable, Allowance for Credit Loss [Line Items]                
Carrying Value               967,700,000
Commercial loans:                
Financing Receivable, Allowance for Credit Loss [Line Items]                
Carrying Value       17,144,591,000   $ 17,144,591,000    
Value of loans placed on nonaccrual       0   0    
Nonaccrual loans resolved           $ 242,400,000    
Commercial loans: | Extended Maturity and Interest Rate Reduction                
Financing Receivable, Allowance for Credit Loss [Line Items]                
Number of loans modified | loan           1 0  
Amortized cost basis of loans modified       $ 88,700,000   $ 88,700,000    
Percentage of commercial loans amortized cost basis       0.52%   0.52%    
Decrease in interest rate           0.95%    
Commercial loans: | First mortgage loan participation | TEXAS                
Financing Receivable, Allowance for Credit Loss [Line Items]                
Specific credit loss allowance $ 5,300,000       $ 5,300,000      
Loan foreclosures including previously accrued interest 28,400,000 $ 247,900,000            
Properties, net 28,600,000 247,900,000     28,600,000      
Liabilities 200,000       200,000      
Loan foreclosures $ 27,900,000 $ 242,400,000            
Commercial loans: | First mortgage loan participation | ARIZONA                
Financing Receivable, Allowance for Credit Loss [Line Items]                
Specific credit loss allowance               $ 19,700,000
Properties, net     $ 71,000,000.0          
Loan foreclosures     $ 71,000,000.0          
Commercial loans: | Credit deteriorated                
Financing Receivable, Allowance for Credit Loss [Line Items]                
Number of mortgage loans | loan       2   2    
Carrying Value       $ 40,448,000   $ 40,448,000    
Nonaccrual loans resolved           90,700,000    
Amortized cost basis       40,400,000   40,400,000    
Specific reserve related to amount of loans resolved during period           19,700,000    
Commercial loans: | Credit deteriorated | Mezzanine Loans | Ireland                
Financing Receivable, Allowance for Credit Loss [Line Items]                
Carrying Value       35,500,000   35,500,000    
Specific credit loss allowance       26,800,000   26,800,000    
Commercial loans: | Credit deteriorated | Senior Loans | Chicago                
Financing Receivable, Allowance for Credit Loss [Line Items]                
Carrying Value       $ 4,900,000   $ 4,900,000    
Commercial loans: | 90 days or greater past due | Non-Credit Deterioration                
Financing Receivable, Allowance for Credit Loss [Line Items]                
Number of mortgage loans | loan       3   3    
Carrying Value       $ 649,500,000   $ 649,500,000    
Amortized cost basis not on nonaccrual       $ 274,300,000   $ 274,300,000    
Commercial loans: | 90 days or greater past due | Non-Credit Deterioration | Senior Mortgage Loan                
Financing Receivable, Allowance for Credit Loss [Line Items]                
Additional mortgage interest acquired during period from third party         $ 143,800,000      
Commercial loans: | Not 90 days or greater past due | Non-Credit Deterioration                
Financing Receivable, Allowance for Credit Loss [Line Items]                
Number of mortgage loans | loan       4   4    
Carrying Value       $ 438,200,000   $ 438,200,000    
Residential Loans | 90 days or greater past due | Non-Credit Deterioration                
Financing Receivable, Allowance for Credit Loss [Line Items]                
Carrying Value       $ 93,500,000   $ 93,500,000