Agreements - Additional Information (Detail) - USD ($)	2 Months Ended	3 Months Ended	9 Months Ended	10 Months Ended	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2018	Sep. 30, 2018	Oct. 31, 2018	Dec. 31, 2018	Dec. 31, 2017
Investment [Line Items]
Percentage of monthly General Partner fee					0.0625%	0.1333%
Percentage of General Partner fee					0.75%	1.60%
Restricted cash	$ 118,195	$ 118,195			$ 118,195	$ 0
Minimum [Member] | General Partner [Member]
Investment [Line Items]
Percentage of expenses to net assets to be covered by General Partner					0.85%
CMF AE Capital Master Fund LLC [Member]
Investment [Line Items]
Percentage of monthly management fee					0.125%
Percentage of management fee					1.50%
Incentive fee, quarterly trading profits basis					20.00%
Greenwave Capital Management LLC [Member]
Investment [Line Items]
Percentage of monthly management fee					0.0625%
Percentage of management fee					0.75%
Incentive fee, quarterly trading profits basis					20.00%
P/E Global LLC [Member]
Investment [Line Items]
Percentage of monthly management fee					0.0417%
Percentage of management fee					0.50%
Incentive fee, quarterly trading profits basis					20.00%
Mesirow Financial International UK Limited [Member]
Investment [Line Items]
Percentage of monthly management fee		0.0833%
Percentage of management fee		1.00%
Incentive fee, quarterly trading profits basis		15.00%
Cambridge Master Fund L.P. [Member]
Investment [Line Items]
Percentage of monthly management fee			0.0833%			0.125%
Percentage of management fee			1.00%			1.50%
Incentive fee, quarterly trading profits basis			15.00%			15.00%
MS&Co. [Member]
Investment [Line Items]
Percentage of allocable shares	100.00%			100.00%
Treasury bill maturity period				28 days	28 days
Percentage monthly average of four week US Treasury bill discount rate				80.00%
MS&Co. [Member] | Minimum [Member] | General Partner [Member]
Investment [Line Items]
Percentage of expenses to net assets to be covered by General Partner					0.85%
Morgan Stanley Wealth Management [Member] | Selling Agreement [Member] | Class A [Member]
Investment [Line Items]
Ongoing placement agent fee payable monthly					0.1667%
Ongoing placement agent fee payable annual					2.00%
Morgan Stanley Distribution Inc [Member] | Harbor Selling Agreement [Member] | Class A [Member]
Investment [Line Items]
Ongoing placement agent fee payable monthly					0.1667%
Ongoing placement agent fee payable annual					2.00%