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Fair Value of Financial Instruments - Summary of Range of Effective Yields and Weighted Average Effective Yields of Partnership's Investments (Details)
Dec. 31, 2024
Dec. 31, 2023
Mortgage Revenue Bonds [Member]    
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]    
Weighted Average Effective Yields [1] 5.50% 4.80% [2]
Mortgage Revenue Bonds [Member] | Effective rate - minimum [Member]    
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]    
Range of Effective Yields 3.70% 2.30% [2]
Mortgage Revenue Bonds [Member] | Effective rate - maximum [Member]    
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]    
Range of Effective Yields 8.40% 7.70% [2]
Taxable Mortgage Revenue Bonds [Member]    
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]    
Weighted Average Effective Yields [1] 8.70% 8.80%
Taxable Mortgage Revenue Bonds [Member] | Effective rate - minimum [Member]    
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]    
Range of Effective Yields 7.10% 6.50%
Taxable Mortgage Revenue Bonds [Member] | Effective rate - maximum [Member]    
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]    
Range of Effective Yields 11.90% 11.90%
Bond Purchase Commitment [Member]    
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]    
Range of Effective Yields   4.10%
Weighted Average Effective Yields [1]   4.10%
[1] Weighted by the total principal outstanding of all the respective securities as of the reporting date.
[2] Mortgage revenue bonds excludes the Provision Center 2014-1 MRB as the bankruptcy process was nearly complete.