v3.26.1
Properties - Narrative (Details)
sqft in Millions, ft² in Millions
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2026
USD ($)
sqft
tenant
unit
agreement
Property
state
property
industry
Jun. 30, 2025
USD ($)
Jun. 30, 2026
USD ($)
sqft
tenant
lease
property
unit
agreement
Property
state
industry
Jun. 30, 2025
USD ($)
Dec. 31, 2025
USD ($)
Dec. 31, 2023
USD ($)
Dec. 31, 2016
ft²
building
Real Estate Properties [Line Items]              
VIE assets $ 61,046,276,000   $ 61,046,276,000   $ 63,183,357,000    
VIE liabilities 53,862,850,000   53,862,850,000   55,693,851,000    
Gain (loss) on extinguishment of debt 0 $ 19,990,000 (335,000) $ 19,990,000      
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    
Medical Office Portfolio              
Real Estate Properties [Line Items]              
Number of acquired properties closed | building             34
Area of property (in sqft) | ft²             1.9
Total gross properties and lease intangibles 795,000,000.0   795,000,000.0        
Debt 444,100,000   444,100,000        
Multifamily Conversion Property              
Real Estate Properties [Line Items]              
Total gross properties and lease intangibles 123,100,000   123,100,000        
Debt 0   0        
Construction in progress 97,000,000.0   97,000,000.0        
Land and land improvements 26,100,000   26,100,000        
Investing and Servicing Segment              
Real Estate Properties [Line Items]              
Total gross properties and lease intangibles 75,100,000   75,100,000        
Debt 37,300,000   $ 37,300,000        
Number of retail properties acquired | property     4        
Number of equity interests in unconsolidated commercial real estate properties acquired | property     1        
Commercial and Residential Lending Segment Property Portfolio              
Real Estate Properties [Line Items]              
Total gross properties and lease intangibles 1,100,000,000   $ 1,100,000,000        
Debt 29,800,000   29,800,000        
Property Segment              
Real Estate Properties [Line Items]              
Construction in progress 163,539,000   163,539,000   138,069,000    
Land and land improvements 832,555,000   832,555,000   769,318,000    
Property Segment | Multifamily Conversion Property              
Real Estate Properties [Line Items]              
Interest capitalized 1,500,000 0 1,900,000 0      
Property Segment | Fundamental Income Properties, LLC              
Real Estate Properties [Line Items]              
VIE assets 2,700,000,000   2,700,000,000        
VIE liabilities $ 1,700,000,000   $ 1,700,000,000        
Number of additional properties acquired | property 16   48        
Gross purchase price $ 179,000,000.0   $ 308,600,000        
Number of properties sold covered by master leases | property 4   13        
Proceeds from sale of operating properties $ 2,300,000   $ 24,700,000        
Number of master leases covering properties sold | lease     2        
Gain on sales of real estate     $ 500,000        
Commercial and Residential Lending Segment              
Real Estate Properties [Line Items]              
Construction in progress 238,145,000   238,145,000   245,794,000    
Land and land improvements 184,276,000   184,276,000   143,090,000    
Commercial and Residential Lending Segment | Multifamily Properties              
Real Estate Properties [Line Items]              
Proceeds from sale of operating properties   54,500,000   54,500,000      
Carrying Value   45,800,000   $ 45,800,000      
Mortgage loans term       3 years      
Unfunded commitments   6,000,000.0   $ 6,000,000.0      
Properties, net   52,900,000   52,900,000      
Initial down payment receivable   8,900,000   8,900,000      
Interest payment receivable   1,300,000   1,300,000      
Commercial and Residential Lending Segment | Disposal Group, Disposed of by Sale, Not Discontinued Operations | Foreclosed Residential Conversion Project              
Real Estate Properties [Line Items]              
Proceeds from sale of operating properties 11,500,000   11,500,000        
Gain on sales of real estate $ 0   $ 0        
Number of units disposed | unit 2   2        
Commercial and Residential Lending Segment | Disposal Group, Disposed of by Sale, Not Discontinued Operations | Multifamily Properties              
Real Estate Properties [Line Items]              
Proceeds from sale of operating properties     $ 40,000,000.0        
Gain on sales of real estate     300,000        
Impairment of property         4,000,000.0    
Commercial and Residential Lending Segment | Disposal Group, Disposed of by Sale, Not Discontinued Operations | Office Building              
Real Estate Properties [Line Items]              
Proceeds from sale of operating properties $ 60,000,000.0 60,000,000.0 60,000,000.0 60,000,000.0      
Gain on sales of real estate   4,100,000   4,100,000      
Impairment of property           $ 30,100,000  
Gain (loss) on extinguishment of debt   23,500,000   23,500,000      
Excess carrying value over sale of real estate   $ 19,400,000   $ 19,400,000      
Commercial and Residential Lending Segment | Purchaser | Secured Financing | Secured Borrowings              
Real Estate Properties [Line Items]              
Face amount $ 32,000,000.0   $ 32,000,000.0        
Initial term 3 years   3 years        
Investing and Servicing Segment              
Real Estate Properties [Line Items]              
Land and land improvements $ 11,916,000   $ 11,916,000   $ 16,567,000    
Investing and Servicing Segment | Disposal Group, Disposed of by Sale, Not Discontinued Operations | Hospitality Asset              
Real Estate Properties [Line Items]              
Proceeds from sale of operating properties 13,100,000   13,100,000        
Gain on sales of real estate $ 2,300,000   $ 2,300,000        
Fundamental Income Properties, LLC | Property Segment              
Real Estate Properties [Line Items]              
Number of properties | Property 527   527        
Area of property acquired (in sqft) | sqft 16.9   16.9        
Number of states | state 44   44        
Number of industries | industry 72   72        
Number of tenants | tenant 123   123        
Number of individuals | agreement 138   138        
Weighted average lease base term 16 years 9 months 18 days   16 years 9 months 18 days