v3.26.1
Properties - Narrative (Details)
sqft in Millions, ft² in Millions
 3 Months Ended 12 Months Ended
Mar. 31, 2026
USD ($)
sqft
tenant
portfolio
agreement
property
Property
state
industry
Dec. 31, 2025
USD ($)
Dec. 31, 2016
ft²
building
Real Estate Properties [Line Items]      
VIE assets $ 62,087,328,000 $ 63,183,357,000  
VIE liabilities 54,738,601,000 55,693,851,000  
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 794,100,000    
Debt 443,500,000    
Multifamily Conversion Property      
Real Estate Properties [Line Items]      
Total gross properties and lease intangibles 121,200,000    
Debt 0    
Construction in progress 95,100,000    
Land and land improvements 26,100,000    
Investing and Servicing Segment      
Real Estate Properties [Line Items]      
Total gross properties and lease intangibles 83,800,000    
Debt $ 37,400,000    
Number of retail properties acquired | property 5    
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    
Debt 29,800,000    
Property Segment      
Real Estate Properties [Line Items]      
Construction in progress 147,599,000 138,069,000  
Land and land improvements 791,518,000 769,318,000  
Property Segment | Fundamental Income Properties, LLC      
Real Estate Properties [Line Items]      
VIE assets 2,500,000,000    
VIE liabilities $ 1,500,000,000    
Number of additional properties acquired | Property 32    
Gross purchase price $ 129,600,000    
Number of real estate portfolio sold | portfolio 1    
Number of net lease properties sold | property 2    
Proceeds from sale of operating properties $ 22,400,000    
Gain on sales of real estate 500,000    
Commercial and Residential Lending Segment      
Real Estate Properties [Line Items]      
Construction in progress 246,914,000 245,794,000  
Land and land improvements 184,276,000 143,090,000  
Commercial and Residential Lending Segment | Multifamily Properties | Disposal Group, Disposed of by Sale, Not Discontinued Operations      
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 | Purchaser | Secured Financing | Secured Borrowings      
Real Estate Properties [Line Items]      
Face amount $ 32,000,000.0    
Initial term 3 years    
Fundamental Income Properties, LLC | Property Segment      
Real Estate Properties [Line Items]      
Number of properties | Property 515    
Area of property acquired (in sqft) | sqft 15.1    
Number of states | state 44    
Number of industries | industry 68    
Number of tenants | tenant 114    
Number of individuals | agreement 129    
Weighted average lease base term 17 years 4 months 24 days