Nature of Business and Significant Accounting Policies (Details)	12 Months Ended
	Dec. 31, 2019 USD ($) class	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Assets allocated to GP 11, GP 14, LLC and GP 17, LLC	$ 0
Assets allocated to GP 3		$ 0
Classes of interests
Number of classes of limited partner interests | class	7
Income taxes
Income taxes	$ 0	0	$ 0
Debt
Debt carried by partners	0	0	$ 0
General Partner
Organization and offering costs
Unreimbursed organization and offering costs	$ 283,000
General Partner | Maximum
Organization and offering costs
Allowable monthly reimbursement of organization and offering costs as a percent of net Partnership asset value	0.083%
Allowable annual reimbursement of organization and offering costs as a percent of net Partnership asset value	1.00%
Swap Contracts | Deutsche Bank AG
Swap contracts
Notional value	$ 29,622,256	31,317,256
Cash margin balance	$ 5,082,500	$ 6,290,000