Fair Value of Financial Instruments - Summary of Range of Effective Yields and Weighted Average Effective Yields of Partnership's Investments (Details)		Jun. 30, 2025	Dec. 31, 2024
Mortgage Revenue Bonds [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Weighted Average Effective Yields	[1]	5.90%	5.50%
Mortgage Revenue Bonds [Member] | Effective rate - minimum [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Range of Effective Yields		3.40%	3.70%
Mortgage Revenue Bonds [Member] | Effective rate - maximum [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Range of Effective Yields		11.10%	8.40%
Taxable Mortgage Revenue Bonds [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Weighted Average Effective Yields	[1]	8.60%	8.70%
Taxable Mortgage Revenue Bonds [Member] | Effective rate - minimum [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Range of Effective Yields		6.50%	7.10%
Taxable Mortgage Revenue Bonds [Member] | Effective rate - maximum [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Range of Effective Yields		14.30%	11.90%
Bond Purchase Commitment [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Range of Effective Yields		6.00%
Weighted Average Effective Yields	[1]	6.00%

[1] Weighted by the total principal outstanding of all the respective securities as of the reporting date.