Governmental Issuer Loans - Summary of Partnership's GIL Investments (Parenthetical) (Details)	Jun. 30, 2022	Dec. 31, 2021
SIFMA [Member]
Governmental Issuer Loans [Line Items]
Interest Rate		2.25%
Governmental Issuer Loans [Member] | Floor Rate [Member] | Minimum [Member]
Governmental Issuer Loans [Line Items]
Interest Rate	0.00%	0.00%
Governmental Issuer Loans [Member] | Floor Rate [Member] | Maximum [Member]
Governmental Issuer Loans [Line Items]
Interest Rate	0.50%	0.50%