Derivative Instruments - Summary of Gross and Net Amounts of Offsetting Assets and Liabilities (Detail) - Currency Futures Contract [Member] - Morgan Stanley & Co. LLC [Member] - USD ($)	Mar. 31, 2020	Dec. 31, 2019
Offsetting Assets And Liabilities [Line Items]
Financial Derivative Assets, Futures Contracts	$ 882,272	$ 315,919
Financial Derivative Liabilities, Futures Contracts	(813,665)	(168,990)
Net value of derivatives	68,607	146,929
Net amount	$ 68,607	$ 146,929

Fair value, after offset of derivative liability, of financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, before offset against an obligation to return collateral under a master netting arrangement. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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