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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)		Sep. 30, 2025	Dec. 31, 2024
Mortgage Revenue Bonds [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Weighted Average Effective Yields	[1]	5.40%	5.50%
Mortgage Revenue Bonds [Member] | Effective rate - minimum [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Range of Effective Yields		2.40%	3.70%
Mortgage Revenue Bonds [Member] | Effective rate - maximum [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Range of Effective Yields		9.90%	8.40%
Taxable Mortgage Revenue Bonds [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Weighted Average Effective Yields	[1]	7.90%	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		6.30%	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		12.90%	11.90%
Bond Purchase Commitment [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Range of Effective Yields		5.70%
Weighted Average Effective Yields	[1]	5.70%
[1] Weighted by the total principal outstanding of all the respective securities as of the reporting date.

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- Definition

Effective rate - the effective rate for the available for sale securities held in the portfolio.

+ References

No definition available.

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- Definition

Weighted average effective yield.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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