v3.26.1
Loans - Narrative (Details)
 1 Months Ended 3 Months Ended
Mar. 31, 2026
USD ($)
loan
Feb. 28, 2026
USD ($)
Jan. 31, 2026
USD ($)
Mar. 31, 2026
USD ($)
loan
Mar. 31, 2025
USD ($)
Dec. 31, 2025
USD ($)
Financing Receivable, Allowance for Credit Loss [Line Items]            
Carrying Value $ 22,002,195,000     $ 22,002,195,000   $ 21,627,097,000
Properties, net 3,859,134,000     3,859,134,000   3,448,652,000
Liabilities 54,738,601,000     54,738,601,000   55,693,851,000
Loan foreclosures       $ 341,874,000 $ 50,909,000  
Other Modifications            
Financing Receivable, Allowance for Credit Loss [Line Items]            
Number of loans modified | loan       3    
Number of loans in portfolio modified | loan       4    
Amortized cost basis of loans modified 595,800,000     $ 595,800,000 $ 0  
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 $ 16,598,490,000     16,598,490,000    
Value of loans placed on nonaccrual       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    
Percentage of commercial loans amortized cost basis 0.53%     0.53%    
Decrease in interest rate       0.95%    
Amortized cost basis of loans modified $ 88,500,000     $ 88,500,000    
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   $ 247,900,000   28,400,000    
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 $ 40,863,000     $ 40,863,000    
Nonaccrual loans resolved       90,700,000    
Amortized cost basis 40,800,000     40,800,000    
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 35,900,000     35,900,000    
Specific credit loss allowance 27,200,000     27,200,000    
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 $ 641,400,000     $ 641,400,000    
Amortized cost basis not on nonaccrual $ 270,700,000     270,700,000    
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 $ 433,000,000.0     $ 433,000,000.0    
Residential Loans | 90 days or greater past due | Non-Credit Deterioration            
Financing Receivable, Allowance for Credit Loss [Line Items]            
Carrying Value $ 74,300,000     $ 74,300,000