v3.22.2.2
Related Party Transactions (Details)
£ in Millions
 1 Months Ended 3 Months Ended 9 Months Ended
May 24, 2021
USD ($)
Jun. 30, 2021
USD ($)
Mar. 31, 2021
USD ($)
Sep. 30, 2022
USD ($)
loan
Rate
Sep. 30, 2022
GBP (£)
Sep. 30, 2021
USD ($)
Sep. 30, 2022
USD ($)
loan
Rate
Sep. 30, 2021
USD ($)
Aug. 03, 2022
USD ($)
Dec. 31, 2021
USD ($)
Dec. 31, 2017
USD ($)
Jun. 30, 2015
USD ($)
Related Party Transaction [Line Items]                        
Termination fee, percent fee of base management fee       300.00%     300.00%          
Related party expenses       $ (9,719,000)   $ (9,583,000) $ (28,705,000) $ (28,387,000)        
Base management fees incurred but not yet paid       9,762,000     9,762,000     $ 9,773,000    
Total carrying value, net       8,731,306,000     8,731,306,000   $ 226,500,000 7,857,260,000    
Debt related to real estate owned, held for investment, net (net of deferred financing costs of $4,857 in 2022)       $ 159,978,000     $ 159,978,000     0    
Number of loans | loan       3     3          
Number of independent directors required | Rate       66.60%     66.60%          
Subordinate Mortgage Portfolio Segment                        
Related Party Transaction [Line Items]                        
Total carrying value, net [1],[2]       $ 717,837,000     $ 717,837,000     844,948,000    
Commercial Mortgage and Subordinated Portfolio Segment                        
Related Party Transaction [Line Items]                        
Total carrying value, net       206,800,000     $ 206,800,000     97,800,000    
Commercial Mortgage and Subordinated Portfolio Segment | Mixed Use Property - London                        
Related Party Transaction [Line Items]                        
Off-balance-sheet, credit loss, liability, transfers       $ 327,700,000 £ 293.4              
Junior Mezzanine Loans                        
Related Party Transaction [Line Items]                        
Number of loans | loan       3     3          
Senior Mezzanine Loans                        
Related Party Transaction [Line Items]                        
Total carrying value, net       $ 187,100,000     $ 187,100,000          
Hotel - Washington D.C. | Subordinate Mortgage Portfolio Segment                        
Related Party Transaction [Line Items]                        
Debt related to real estate owned, held for investment, net (net of deferred financing costs of $4,857 in 2022) $ 110,000,000                     $ 110,000,000
Hotel - Washington D.C. | Junior Mezzanine Loans                        
Related Party Transaction [Line Items]                        
Total carrying value, net                     $ 20,000,000 20,000,000
Hotel - Washington D.C. | Senior Mezzanine Loans                        
Related Party Transaction [Line Items]                        
Total carrying value, net                       $ 24,500,000
Payments to acquire mortgage notes receivable $ 24,500,000                      
Arrangement fees                        
Related Party Transaction [Line Items]                        
Related party expenses   $ (400,000) $ (200,000)                  
Limited Liability Company                        
Related Party Transaction [Line Items]                        
Rate of management fees             1.50%          
Extension period             1 year          
Period of termination             180 days          
Termination fee calculation period             24 months          
Limited Liability Company | Management fees                        
Related Party Transaction [Line Items]                        
Base management fees incurred but not yet paid                   $ 9,800,000    
Affiliated Entity                        
Related Party Transaction [Line Items]                        
Debt instrument, face amount     $ 30,000,000                  
Affiliated Entity | Management fees                        
Related Party Transaction [Line Items]                        
Related party expenses       (9,700,000)   (9,600,000) $ (28,600,000) (28,400,000)        
Affiliated Entity | Reimbursements                        
Related Party Transaction [Line Items]                        
Related party expenses       (900,000)   $ (500,000) (3,100,000) $ (1,700,000)        
Apollo Investment Management Europe | Management fees                        
Related Party Transaction [Line Items]                        
Increase in management fee payable       $ 11,000     $ 57,000          
[1] Includes $187,138 and $0 pledged as collateral under secured debt arrangements in 2022 and 2021, respectively.
[2] Net of $140,985 and $178,588 CECL Allowances in 2022 and 2021, respectively, comprised of $119,000 and $145,000 Specific CECL Allowance and $21,985 and $33,588 General CECL Allowance, respectively.