v3.26.1
Debt Obligations - Additional Information (Detail)
1 Months Ended 12 Months Ended
Dec. 01, 2025
USD ($)
Sep. 17, 2025
USD ($)
Aug. 26, 2025
USD ($)
Dec. 10, 2024
USD ($)
Dec. 12, 2023
Feb. 28, 2023
USD ($)
Feb. 28, 2022
USD ($)
Dec. 31, 2025
USD ($)
Jul. 28, 2025
USD ($)
Apr. 09, 2025
USD ($)
Apr. 01, 2025
USD ($)
Dec. 31, 2024
USD ($)
Apr. 26, 2024
USD ($)
Sep. 30, 2022
USD ($)
Jul. 21, 2022
USD ($)
Apr. 27, 2022
USD ($)
Debt Instrument [Line Items]                                
Line of credit current borrowing capacity       $ 140,000,000                        
Line of credit facility, increase (decrease), net       $ 250,000,000   $ 100,000,000 $ 100,000,000                  
Line of credit facility, expiration date       Apr. 30, 2025                        
Percent of principal amount outstanding of loans               35                
Loan, held-in-portfolio               $ 52,800,000                
Maximum [Member]                                
Debt Instrument [Line Items]                                
Line of credit facility, expiration date       Dec. 10, 2026 Dec. 10, 2024                      
Maximum [Member] | Unfunded Loan Commitment [Member]                                
Debt Instrument [Line Items]                                
Percentage of lines of credit current         70                      
Minimum [Member]                                
Debt Instrument [Line Items]                                
Line of credit facility, expiration date       Dec. 10, 2024 Dec. 12, 2023                      
Minimum [Member] | Unfunded Loan Commitment [Member]                                
Debt Instrument [Line Items]                                
Percentage of lines of credit current         60                      
AB CRE PDF Member One LLC [Member] | Loan 9 [Member]                                
Debt Instrument [Line Items]                                
Debt instrument maturity date               Aug. 09, 2026                
State Street Credit Facility [Member]                                
Debt Instrument [Line Items]                                
Line of credit current borrowing capacity               $ 65,000,000           $ 65,000,000    
Line of credit maximum borrowing capacity               140,000,000                
Line of credit, outstanding amount               0       $ 38,000,000        
Loan Repurchase Agreement April 2022 [Member] | AB CRE PDF Member One LLC [Member] | Morgan Stanley Mortgage Capital Holdings [Member] | Mortgage Stanley [Member]                                
Debt Instrument [Line Items]                                
Line of credit maximum borrowing capacity                             $ 200,000,000  
Loan Repurchase Agreement April 2022 [Member] | AB CRE PDF Member One LLC [Member] | Morgan Stanley Mortgage Capital Holdings [Member] | Mortgage Stanley [Member] | Maximum [Member]                                
Debt Instrument [Line Items]                                
Line of credit maximum borrowing capacity                               $ 250,000,000
Loan Repurchase Agreement April 2022 [Member] | AB CRE PDF Member One LLC [Member] | Morgan Stanley Mortgage Capital Holdings [Member] | Mortgage Stanley [Member] | Minimum [Member]                                
Debt Instrument [Line Items]                                
Line of credit maximum borrowing capacity                               $ 150,000,000
Loan Repurchase Agreement April 2024 [Member] | AB CRE PDF Member One LLC [Member] | Morgan Stanley Mortgage Capital Holdings [Member] | Mortgage Stanley [Member]                                
Debt Instrument [Line Items]                                
Line of credit maximum borrowing capacity                         $ 400,000,000      
Loan Repurchase Agreement April 2025 [Member] | AB CRE PDF Member One LLC [Member] | Citibank [Member] | Minimum [Member]                                
Debt Instrument [Line Items]                                
Line of credit maximum borrowing capacity                     $ 250,000,000          
Loan Repurchase Agreement April 2025 [Member] | AB CRE PDF Member One LLC [Member] | Morgan Stanley Mortgage Capital Holdings [Member] | Mortgage Stanley [Member] | Maximum [Member]                                
Debt Instrument [Line Items]                                
Line of credit maximum borrowing capacity                   $ 350,000,000            
Loan Repurchase Agreement April 2025 [Member] | AB CRE PDF Member One LLC [Member] | Morgan Stanley Mortgage Capital Holdings [Member] | Mortgage Stanley [Member] | Minimum [Member]                                
Debt Instrument [Line Items]                                
Line of credit maximum borrowing capacity                   $ 300,000,000            
Loan Repurchase Agreement April 2025 [Member] | AB CRE PDF Lending C LLC [Member] | Citibank [Member] | Maximum [Member]                                
Debt Instrument [Line Items]                                
Line of credit maximum borrowing capacity                     $ 500,000,000          
Loan Repurchase Agreement July 2025 [Member] | AB CRE PDF Member One LLC [Member] | Morgan Stanley Mortgage Capital Holdings [Member] | Mortgage Stanley [Member] | Maximum [Member]                                
Debt Instrument [Line Items]                                
Line of credit maximum borrowing capacity                 $ 400,000,000              
Loan Repurchase Agreement July 2025 [Member] | AB CRE PDF Member One LLC [Member] | Morgan Stanley Mortgage Capital Holdings [Member] | Mortgage Stanley [Member] | Minimum [Member]                                
Debt Instrument [Line Items]                                
Line of credit maximum borrowing capacity                 $ 350,000,000              
Loan Repurchase Agreement September 2025 [Member] | Morgan Stanley Mortgage Capital Holdings [Member] | Mortgage Stanley [Member]                                
Debt Instrument [Line Items]                                
Line of credit facility, expiration date   Apr. 27, 2027                            
Loan Repurchase Agreement September 2025 [Member] | AB CRE PDF Member One LLC [Member] | Morgan Stanley Mortgage Capital Holdings [Member] | Mortgage Stanley [Member]                                
Debt Instrument [Line Items]                                
Line of credit facility, increase (decrease), net   $ 550,000,000                            
Loan Repurchase Agreement September 2025 [Member] | AB CRE PDF Member One LLC [Member] | Morgan Stanley Mortgage Capital Holdings [Member] | Mortgage Stanley [Member] | Maximum [Member]                                
Debt Instrument [Line Items]                                
Line of credit maximum borrowing capacity   500,000,000                            
Loan Repurchase Agreement September 2025 [Member] | AB CRE PDF Member One LLC [Member] | Morgan Stanley Mortgage Capital Holdings [Member] | Mortgage Stanley [Member] | Minimum [Member]                                
Debt Instrument [Line Items]                                
Line of credit maximum borrowing capacity   $ 400,000,000                            
Notes payable [Member]                                
Debt Instrument [Line Items]                                
Debt instrument, annual principal payment               86,100,000                
Notes payable [Member] | AB CRE PDF Member One LLC [Member]                                
Debt Instrument [Line Items]                                
Line of credit maximum borrowing capacity               $ 125,600,000                
Debt instrument maturity date               Jan. 06, 2027                
Debt instrument, description of variable rate basis               interest at Term SOFR plus 1.20%                
HSBC Loan [Member]                                
Debt Instrument [Line Items]                                
Debt instrument basis spread on variable rate               1.61%                
Debt instrument interest rate               5.25%                
Derivative, floor interest rate               0.00%                
Loan, held-in-portfolio               $ 143,767,500       $ 141,329,841        
HSBC Loan and Security Agreement [Member]                                
Debt Instrument [Line Items]                                
Line of credit maximum borrowing capacity $ 147,712,500   $ 187,150,000                          
Percent of principal amount outstanding of loans 25   25                          
Loan, held-in-portfolio $ 36,928,125   $ 46,787,500                          
HSBC Loan and Security Agreement [Member] | Additional Loan [Member]                                
Debt Instrument [Line Items]                                
Principal amount $ 55,462,500   $ 92,250,000,000,000                          
HSBC Loan and Security Agreement [Member] | Secured Overnight Financing Rate (SOFR) [Member]                                
Debt Instrument [Line Items]                                
Debt instrument basis spread on variable rate 1.80%   1.50%