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Property Loans - Summary of Partnership's Property Loans, Allowances for Credit Losses (Parenthetical) (Details) - Senior Construction Financing [Member]
Sep. 30, 2023
Dec. 31, 2022
Minimum [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Floor interest rate 0.00% 0.00%
Maximum [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Floor interest rate 0.50% 0.50%