Ceres Tactical Global 10-K 26 Mar 20 2019 FY Annual report Financial data

Cover Page

Cover Page - USD ($)	12 Months Ended
	Dec. 31, 2019	Feb. 29, 2020	Jun. 30, 2019
Document Information [Line Items]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	FY
Entity Registrant Name	CERES TACTICAL GLOBAL L.P.
Entity Central Index Key	0001097396
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Entity Emerging Growth Company	false
Entity Small Business	false
Entity Current Reporting Status	Yes
Entity Shell Company	false
Entity Interactive Data Current	Yes
Entity Well-known Seasoned Issuer	No
Entity Address, State or Province	NY
Entity Voluntary Filers	No
Class A [Member]
Document Information [Line Items]
Entity Public Float			$ 34,219,274
Entity Common Stock, Shares Outstanding		3,379,210.175
Class Z [Member]
Document Information [Line Items]
Entity Public Float			$ 101,006
Entity Common Stock, Shares Outstanding		4,681.754

Statements of Financial Conditi

Statements of Financial Condition - USD ($)		Dec. 31, 2019	Dec. 31, 2018
Assets:
Investment in the Fund(s), at fair value (Note 6)	[1]	$ 14,991,927	$ 1,492,447
Redemptions receivable from the Fund(s)		46,358	276,352
Equity in trading account:
Unrestricted cash (Note 3c)		16,773,307	3,462,890
Restricted cash (Note 3c)		602,161	118,195
Options purchased, at fair value (premiums paid $9,075 and $0 at December 31, 2019 and 2018, respectively		21,313
Total equity in trading account		17,396,781	3,581,085
Expense reimbursement		14,346	15,047
Interest receivable (Note 3c)		22,037	7,851
Total assets		32,471,449	5,372,782
Liabilities:
Net unrealized depreciation on open futures contracts		93,481	10,645
Accrued expenses:
Ongoing placement agent fees (Note 3d)			8,623
General Partner fees (Note 3a)		20,201	3,279
Management fees (Note 3b)		22,313	3,999
Incentive fees (Note 3b)			18,653
Professional fees		107,776	85,695
Redemptions payable to Limited Partners (Note 7)		787,173	84,066
Total liabilities		1,030,944	214,960
Partners' Capital (Notes 1 and 7):
Total partners' capital (net asset value)		31,440,505	5,157,822
Total liabilities and partners' capital		32,471,449	5,372,782
Class A [Member]
Partners' Capital (Notes 1 and 7):
Limited Partners		30,975,585	5,085,280
Total partners' capital (net asset value)		$ 30,975,585	$ 5,085,280
Net asset value per Unit		$ 8.38	$ 8.71
Class Z [Member]
Partners' Capital (Notes 1 and 7):
General Partner, Class Z, 37,254.248 and 7,027.337 Units outstanding at December 31, 2019 and 2018, respectively		$ 377,559	$ 72,542
Limited Partners		87,361
Total partners' capital (net asset value)		$ 464,920	$ 72,542
Net asset value per Unit		$ 10.13	$ 10.32
[1]	Defined in Note 1.

Statements of Financial Condi_2

Statements of Financial Condition (Parenthetical) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Premiums paid on option contracts	$ 9,075	$ 0
Class A [Member]
Limited Partners, Units outstanding	3,694,466.834	583,751.985
Class Z [Member]
General Partner, Units outstanding	37,254.248	7,027.337
Limited Partners, Units outstanding	8,620.412	0

Condensed Schedule of Investmen

Condensed Schedule of Investments		Dec. 31, 2019USD ($)Contract	Dec. 31, 2018USD ($)Contract
Schedule of Investments [Line Items]
Fair Value	[1]	$ 14,991,927	$ 1,492,447
% of Partners' Capital		47.68%	28.94%
CMF AE Capital Master Fund LLC [Member]
Schedule of Investments [Line Items]
Fair Value			$ 1,492,447
% of Partners' Capital			28.94%
CMF ADG Master Fund LLC [Member]
Schedule of Investments [Line Items]
Fair Value		$ 14,991,927
% of Partners' Capital		47.68%
Futures Contracts [Member]
Schedule of Investments [Line Items]
Net unrealized appreciation (depreciation) on open contracts		$ (93,481)	$ (10,645)
% of Partners' Capital		(0.30%)	(0.21%)
Call Option [Member]
Schedule of Investments [Line Items]
Net unrealized appreciation (depreciation) on open contracts		$ 21,313
% of Partners' Capital		0.07%
Currencies [Member] | Call Option [Member]
Schedule of Investments [Line Items]
Number of Contracts | Contract		33
Net unrealized appreciation (depreciation) on open contracts		$ 21,313
% of Partners' Capital		0.07%
Contracts Purchased [Member] | Futures Contracts [Member]
Schedule of Investments [Line Items]
Net unrealized appreciation (depreciation) on open contracts		$ 72,009	$ 2,400
% of Partners' Capital		0.23%	0.05%
Contracts Purchased [Member] | Currencies [Member] | Futures Contracts [Member]
Schedule of Investments [Line Items]
Number of Contracts | Contract		194	2
Net unrealized appreciation (depreciation) on open contracts		$ 44,207	$ 2,400
% of Partners' Capital		0.14%	0.05%
Contracts Purchased [Member] | Metals [Member] | Futures Contracts [Member]
Schedule of Investments [Line Items]
Number of Contracts | Contract		22
Net unrealized appreciation (depreciation) on open contracts		$ 27,802
% of Partners' Capital		0.09%
Contracts Sold [Member] | Futures Contracts [Member]
Schedule of Investments [Line Items]
Net unrealized appreciation (depreciation) on open contracts		$ (165,490)	$ (13,045)
% of Partners' Capital		(0.53%)	(0.26%)
Contracts Sold [Member] | Currencies [Member] | Futures Contracts [Member]
Schedule of Investments [Line Items]
Number of Contracts | Contract		110	57
Net unrealized appreciation (depreciation) on open contracts		$ (163,160)	$ (13,045)
% of Partners' Capital		(0.52%)	(0.26%)
Contracts Sold [Member] | Interest Rates U.S. [Member] | Futures Contracts [Member]
Schedule of Investments [Line Items]
Number of Contracts | Contract		14
Net unrealized appreciation (depreciation) on open contracts		$ (2,599)
% of Partners' Capital		(0.01%)
Contracts Sold [Member] | Interest Rates Non-U.S. [Member] | Futures Contracts [Member]
Schedule of Investments [Line Items]
Number of Contracts | Contract		8
Net unrealized appreciation (depreciation) on open contracts		$ 269
% of Partners' Capital	[2]	0.00%
[1]	Defined in Note 1.
[2]	Due to rounding.

Condensed Schedule of Investm_2

Condensed Schedule of Investments (Parenthetical) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Schedule of Investments [Abstract]
Premiums paid on option contracts	$ 9,075	$ 0

Statements of Income and Expens

Statements of Income and Expenses - USD ($)		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Investment Income:
Interest income (Note 3c)		$ 308,818	$ 50,358
Interest income allocated from the Fund(s) (Note 3c)		360,012	35,319	$ 54,066
Total investment income		668,830	85,677	54,066
Expenses:
Expenses allocated from the Fund(s)		178,037	19,003
Clearing fees related to direct investments (Note 3c)		96,905	24,277
Ongoing placement agent fees (Note 3d)		702,857	115,740	168,976
General Partner fees (Note 3a)		267,600	43,804	135,181
Management fees (Note 3b)		321,178	55,979	126,731
Incentive fees (Note 3b)		203,155	52,361
Professional fees		306,433	177,853
Total expenses		2,076,165	489,017	430,888
Expenses reimbursed by the General Partner		(278,621)	(171,488)
Net Expenses		1,797,544	317,529	430,888
Net investment loss		(1,128,714)	(231,852)	(376,822)
Net gains (losses) on trading of commodity interests and investment in the Fund(s):
Net realized gains (losses) on closed contracts		(510,954)	410,059
Net realized gains (losses) on closed contracts allocated from the Fund(s)		(436,136)	(137,292)	251,104
Net change in unrealized gains (losses) on open contracts		(71,529)	(10,591)
Net change in unrealized gains (losses) on open contracts allocated from the Fund(s)		844,976	83,939	(9,705)
Total trading results		(173,643)	346,115	241,399
Net income (loss)		(1,302,357)	114,263	(135,423)
Class A [Member]
Net gains (losses) on trading of commodity interests and investment in the Fund(s):
Net income (loss)		$ (1,294,667)	$ 111,995	$ (135,423)
Net income (loss) per Unit	[1]	$ (0.33)	$ 0.16	$ (0.29)
Weighted average number of Units outstanding		4,076,019.884	669,432.806	911,204.435
Class Z [Member]
Net gains (losses) on trading of commodity interests and investment in the Fund(s):
Net income (loss)		$ (7,690)	$ 2,268
Net income (loss) per Unit	[1]	$ (0.19)	$ 0.32
Weighted average number of Units outstanding		52,100.539	7,027.337
[1]	Represents the change in net asset value per Unit.

Statements of Changes in Partne

Statements of Changes in Partners' Capital - USD ($)	Total	General Partner [Member]	Limited Partners [Member]	Class A [Member]	Class A [Member]General Partner [Member]	Class A [Member]Limited Partners [Member]	Class Z [Member]	Class Z [Member]General Partner [Member]	Class Z [Member]Limited Partners [Member]
Net asset value per unit						$ 8.84
Partners' Capital, beginning of period at Dec. 31, 2016	$ 9,094,995			$ 9,094,995
Redemptions		$ (40,000)	$ (2,486,474)		$ (40,000)	$ (2,486,474)
Net income (loss)	(135,423)			(135,423)
Partners' Capital, end of period at Dec. 31, 2017	$ 6,433,098			$ 6,433,098
Partners' Capital, Units, beginning of period at Dec. 31, 2016	1,028,828.887			1,028,828.887
Redemptions (in units)		(4,476.772)	(271,924.252)		(4,476.772)	(271,924.252)
Partners' Capital, Units, end of period at Dec. 31, 2017	752,427.863			752,427.863
Net asset value per unit				$ 8.55		$ 8.55
Subscriptions		$ 70,274						$ 70,274
Redemptions		$ (70,239)	$ (1,389,574)		$ (70,239)	$ (1,389,574)
Net income (loss)	$ 114,263			$ 111,995			$ 2,268
Partners' Capital, end of period at Dec. 31, 2018	$ 5,157,822			$ 5,085,280			$ 72,542
Subscriptions (in units)		7,027.337						7,027.337
Redemptions (in units)		(8,199.927)	(160,475.951)		(8,199.927)	(160,475.951)
Partners' Capital, Units, end of period at Dec. 31, 2018	590,779.322			583,751.985			7,027.337
Net asset value per unit				$ 8.71		$ 8.71	$ 10.32		$ 10.32
Subscriptions		$ 411,459	$ 33,930,319			$ 33,753,729		$ 411,459	$ 176,590
Redemptions		$ (100,000)	$ (6,656,738)			$ (6,568,757)		$ (100,000)	$ (87,981)
Net income (loss)	$ (1,302,357)			$ (1,294,667)			$ (7,690)
Partners' Capital, end of period at Dec. 31, 2019	$ 31,440,505			$ 30,975,585			$ 464,920
Subscriptions (in units)		39,870.113	3,892,396.052			3,875,284.653		39,870.113	17,111.399
Redemptions (in units)		(9,643.202)	(773,060.791)			(764,569.804)		(9,643.202)	(8,490.987)
Partners' Capital, Units, end of period at Dec. 31, 2019	3,740,341.494			3,694,466.834			45,874.660
Net asset value per unit				$ 8.38		$ 8.38	$ 10.13		$ 10.13

Organization

Organization	12 Months Ended
	Dec. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization	1. Organization: Ceres Tactical Global L.P. (formerly, Ceres Tactical Currency L.P.) (the “Partnership”) is a Delaware limited partnership organized in 1999 to engage primarily in the speculative trading of futures contracts, options on futures and forward contracts, and forward contracts on physical commodities and other commodity interests, including, but not limited to, foreign currencies, financial instruments, metals, energy, and agricultural products (collectively, “Futures Interests”) (refer to Note 9, “Financial Instruments”). Initially, the Partnership’s investment strategy focused on currency and currency-related investments. While the Partnership is expected to continue to have significant exposure to currency and currency-related markets, such trading will no longer be the Partnership’s sole focus. Therefore, the Partnership’s past trading performance will not necessarily be indicative of future results. The Futures Interests that are traded by the Partnership, either directly, through individually managed accounts, or indirectly, through its investment in the Funds (as defined below), are volatile and involve a high degree of market risk. The General Partner (as defined below) may also determine to invest up to all of the Partnership’s assets in United States (“U.S.”) Treasury bills and/or money market mutual funds, including money market mutual funds managed by Morgan Stanley or its affiliates. Prior to the close of business on December 31, 2017, the Partnership was one of the Morgan Stanley Spectrum series of funds, comprised of the Partnership, Morgan Stanley Smith Barney Spectrum Select L.P., Morgan Stanley Smith Barney Spectrum Strategic L.P. and Morgan Stanley Smith Barney Spectrum Technical L.P. Ceres Managed Futures LLC, a Delaware limited liability company, acts as the general partner (“Ceres” or the “General Partner”) and commodity pool operator of the Partnership and is the general partner or trading manager (in such capacity, the “Trading Manager”) of each Fund (as defined below). Ceres is a wholly owned subsidiary of Morgan Stanley Domestic Holdings, Inc. (“MSD Holdings”). MSD Holdings is ultimately owned by Morgan Stanley. Morgan Stanley is a publicly held company whose shares are listed on the New York Stock Exchange. Morgan Stanley is engaged in various financial services and other businesses. As of January 1, 2018, units of limited partnership interest (“Unit(s)”) of the Partnership were being offered in two classes (each, a “Class” or collectively, the “Classes”): Class A Units and Class Z Units. Class A Units and Class Z Units are identical, except that Class Z Units are not subject to the monthly ongoing placement agent fee. All Units issued prior to January 1, 2018 were deemed “Class A Units.” The rights, liabilities, risks, and fees associated with investment in the Class A Units were not changed. Class Z Units are offered to limited partners who receive advisory services from Morgan Stanley Smith Barney LLC, doing business as Morgan Stanley Wealth Management (“Morgan Stanley Wealth Management”) and may also be offered to certain employees of Morgan Stanley and/or its subsidiaries (and their family members). Class Z Units were first issued on April 1, 2018. As of December 31, 2019, all trading decisions were made for the Partnership by P/E Global LLC (“P/E Global”), Greenwave Capital Management LLC (“Greenwave”) and ADG Capital Management LLP (“ADG”) (each, a “Trading Advisor” and collectively, the “Trading Advisors”), each of which is a registered commodity trading advisor. Effective June 30, 2019, SECOR Capital Advisors, LP (“SECOR”) ceased to act as a commodity trading advisor to the Partnership. On June 30, 2019, the Partnership fully redeemed its investment in SECOR Master Fund L.P. (“SECOR Master”). Effective April 3, 2019, the General Partner terminated AE Capital PTY Limited (“AE Capital”) as a commodity trading advisor to the Partnership. For the interim period from April 4, 2019 through April 30, 2019, the Partnership’s assets previously allocated to AE Capital were not charged a management fee and were credited with interest income at a rate equal to the monthly average of the 4-Week On January 1, 2018, the Partnership allocated a portion of its assets to P/E Global. P/E Global directly trades a portion of the Partnership’s assets allocated to it through a managed account in the name of the Partnership pursuant to P/E Global’s FX Strategy Standard – MS Program. On January 1, 2018, the Partnership allocated a portion of its assets to Greenwave. Greenwave directly trades a portion of the Partnership’s assets allocated to it through a managed account in the name of the Partnership pursuant to Greenwave’s Flagship Plus Program. During the periods covered by this report, the Partnership’s and the Funds’ commodity broker was Morgan Stanley & Co. LLC (“MS&Co.”), a registered futures commission merchant. JPMorgan Chase Bank, N.A. (“JPMorgan”) may also act as a foreign exchange forward or swap counterparty for the Partnership/Funds. During prior periods included in this report, the Partnership/Funds deposited a portion of their cash in non-trading Effective October 10, 2018, the Partnership changed its name from Ceres Tactical Currency L.P. to Ceres Tactical Global L.P. The Partnership and CMF ADG Master Fund LLC (“ADG Master”) have, and AE Capital Master (prior to its termination) had, entered into futures brokerage account agreements with MS&Co. Prior to their respective terminations, each of SECOR Master, Willowbridge Master and Cambridge Master Fund L.P. (“Cambridge Master”) had entered into futures brokerage account agreements and foreign exchange prime brokerage agreements with MS&Co. ADG Master will be referred to as the “Fund”. References herein to “Funds” may also include, as relevant, SECOR Master, AE Capital Master, Willowbridge Master and Cambridge Master. Pursuant to these agreements, the Partnership, directly or through its investment in the Funds, pays MS&Co. (or will reimburse MS&Co. if previously paid) its allocable share of all trading fees for the clearing and, where applicable, execution of transactions as well as exchange, user, give-up, Effective July 12, 2017 and until their respective terminations, Cambridge Master, Willowbridge Master and SECOR Master each entered into certain agreements with JPMorgan in connection with trading in forward foreign currency contracts on behalf of the referenced Funds and, indirectly, the Partnership. These agreements include a foreign exchange and bullion authorization agreement (“FX Agreement”), an International Swap Dealers Association, Inc. master agreement (“Master Agreement”), a schedule to the Master Agreement, a 2016 credit support annex for variation margin to the schedule and an institutional account agreement. In addition to Cambridge Master, Willowbridge Master and SECOR Master, Cambridge (and, subsequently, Mesirow, pursuant to the novation, assignment and assumption agreement), Willowbridge and SECOR were parties to the FX Agreements for the Funds to which each acted as commodity trading advisor. Under each FX Agreement, JPMorgan charged a fee on the aggregate foreign currency transactions entered into on behalf of the respective Fund during a month. On October 10, 2018, Cambridge, Mesirow, Cambridge Master and JPMorgan entered into an amendment and assignment agreement, dated October 10, 2018 (the “Assignment Agreement”), effective as of October 1, 2018, to the FX Agreement, pursuant to which Cambridge assigned to Mesirow all of its rights, liabilities, duties and obligations under and in respect of the FX Agreement, Mesirow accepted such assignment and assumed all rights, liabilities, duties and obligations under and in respect of the FX Agreement, and JPMorgan consented to such assignment and assumption. Pursuant to the Assignment Agreement, all references to Cambridge were replaced by references to Mesirow, and all references to “Investment Manager” are deemed to refer to Mesirow. On October 10, 2018, Cambridge Master and JPMorgan entered into an amendment, dated as of October 10, 2018 (the “ISDA Amendment”), effective as of October 1, 2018, to the schedule to the Master Agreement, dated as of July 12, 2017, between Cambridge Master and JPMorgan. Pursuant to the ISDA Amendment, all references to Cambridge were replaced by references to Mesirow. The General Partner fees, management fees, incentive fees and professional fees of the Partnership are allocated proportionally to each Class based on the net asset value of the Class. The Partnership will terminate on December 31, 2035 regardless of financial condition at such time, or at an earlier date if certain conditions occur as defined in the Partnership’s limited partnership agreement, as may be amended from time to time. Ceres is required to maintain a 1% minimum equity interest in the Partnership. The equity maintained in the Partnership by Ceres is invested in the Partnership’s Class Z Units. The General Partner has delegated certain administrative functions to SS&C Technologies, Inc., a Delaware corporation, currently doing business as SS&C GlobeOp (the “Administrator”). Pursuant to a master services agreement, the Administrator furnishes certain administrative, accounting, regulatory reporting, tax and other services as agreed from time to time. In addition, the Administrator maintains certain books and records of the Partnership. Effective January 1, 2018, the General Partner pays or reimburses the Partnership, from the General Partner fee it receives from the Partnership, the ordinary administrative expenses of the Partnership, to the extent these expenses exceed 0.85% annually of the net assets of the Partnership. This includes the expenses related to the engagement of the Administrator. Prior to January 1, 2018, the General Partner fully reimbursed the Partnership for these expenses.

Basis of Presentation and Summa

Basis of Presentation and Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2019
Accounting Policies [Abstract]
Basis of Presentation and Summary of Significant Accounting Policies	2. Basis of Presentation and Summary of Significant Accounting Policies: a. Use of Estimates b. Profit Allocation. c. Statement of Cash Flows. “Statement of Cash Flows.” d. Partnership’s Investment in the Funds. e. Partnership’s/Funds’ Derivative Investments. The Partnership and the Funds do not isolate the portion of the results of operations arising from the effect of changes in foreign exchange rates on investments from fluctuations due to changes in market prices of investments held. Such fluctuations are included in total trading results in the Partnership’s/Funds’ Statements of Income and Expenses. f. Partnership’s Cash. g. Foreign Currency Transactions and Translation. h. Income Taxes. “Income Taxes,” “more-likely-than-not” more-likely-than-not i. Investment Company Status. 2013-08, “Financial Services—Investment Companies (Topic 946): Amendments to the Scope, Measurement and Disclosure Requirements” j. Net Income (Loss) per Unit. “Financial Services—Investment Companies.”

Agreements

Agreements	12 Months Ended
	Dec. 31, 2019
Text Block [Abstract]
Agreements	3. Agreements: a. Limited Partnership Agreement: The General Partner administers the business and affairs of the Partnership, including selecting one or more advisors to make trading decisions for the Partnership. Effective January 1, 2018, the Partnership pays the General Partner a monthly administration fee (the “General Partner fee”) equal to 1/12 of 0.75% (a 0.75% annual rate) of the Partnership’s beginning of the month net assets. Prior to January 1, 2018, the General Partner fee paid to the General Partner was accrued at a rate of 1/12 of 1.6% (a 1.6% annual rate) per month of the Partnership’s beginning of the month net assets. b. Management Agreement: The General Partner, on behalf of the Partnership, has entered into a management agreement with each Trading Advisor (each, a “Management Agreement”). The Trading Advisors are not affiliated with one another, the General Partner or MS&Co., and are not responsible for the organization or operation of the Partnership. Each Management Agreement provides that the Trading Advisor has sole discretion in determining the investments of the assets of the Partnership allocated to the Trading Advisor by the General Partner. Pursuant to each Management Agreement, the Partnership pays each Trading Advisor a flat-rate monthly management fee and an incentive fee. ADG receives a monthly management fee equal to 1/12 of 1.0% (a 1.0% annual rate) per month of net assets allocated on the first day of each month to ADG. Greenwave receives a monthly management fee equal to 1/12 of 0.75% (a 0.75% annual rate) per month of net assets allocated on the first day of each month to Greenwave. P/E Global receives a monthly management fee equal to 1/12 of 0.50% (a 0.50% annual rate) per month of net assets allocated on the first day of each month to P/E Global. Prior to its termination on June 30, 2019, SECOR received a monthly management fee equal to 1/12 of 1.15% (a 1.15% annual rate) per month of net assets allocated on the first day of each month to SECOR. Prior to its termination on April 3, 2019, AE Capital received a monthly management fee equal to 1/12 of 1.5% (a 1.5% annual rate) per month of net assets allocated on the first day of each month to AE Capital. Prior to its termination on January 31, 2019, Willowbridge received a monthly management fee equal to 1/12 of 1.25% (a 1.25% annual rate) per month of net assets allocated on the first day of each month to Willowbridge. From October 1, 2018 until its termination on December 31, 2018, Mesirow received a monthly management fee equal to 1/12 of 1.0% (a 1.0% annual rate) per month of net assets allocated on the first day of each month to Mesirow. From January 1, 2018 to September 30, 2018, Cambridge received a monthly management fee equal to 1/12 of 1.0% (1.0% per year) of net assets allocated on the first day of each month to Cambridge. Prior to January 1, 2018, Cambridge received a monthly management fee equal to 1/12 of 1.5% (1.5% per year) of net assets allocated on the first day of each month to Cambridge. Each Management Agreement may be terminated upon notice by either party. In addition, the Partnership is obligated to pay ADG an incentive fee, payable semi-annually, equal to 25% of trading profits earned by ADG for the Partnership. The Partnership is obligated to pay Greenwave and P/E Global an incentive fee, payable quarterly, equal to 20% of trading profits earned by each Advisor. Prior to its termination on June 30, 2019, SECOR was eligible to receive an incentive fee, payable annually, equal to 25% of trading profits earned by SECOR for the Partnership. Prior to its termination on April 3, 2019, AE Capital was eligible to receive an incentive fee, payable quarterly, equal to 20% of trading profits earned by AE Capital for the Partnership. Prior to its termination on January 31, 2019, Willowbridge was eligible to receive an incentive fee, payable quarterly, equal to 20% of trading profits earned by Willowbridge for the Partnership. From October 1, 2018 until its termination on December 31, 2018, Mesirow was eligible to receive an incentive fee, payable annually, equal to 15% of trading profits earned by Mesirow for the Partnership. Prior to October 1, 2018, Cambridge was eligible to receive an incentive fee, payable annually, equal to 15% of trading profits earned by Cambridge for the Partnership. Prior to January 1, 2018, Cambridge received an incentive fee, payable quarterly, equal to 15% of trading profits earned by Cambridge for the Partnership. Trading profits represent the amount by which profits from trading in Futures Interests exceed losses after brokerage, ongoing placement agent, General Partner and management fees, as applicable, are deducted. For a Trading Advisor with trading losses, no incentive fee is paid in subsequent months until all such losses are recovered. Cumulative trading losses are adjusted on a pro-rata c. Customer Agreement: The Partnership has entered into a customer agreement with MS&Co. (the “Customer Agreement”). Under the Customer Agreement, the Partnership pays trading fees for the clearing and, where applicable, execution of transactions, as well as exchange, user, give-up, 4-week 4-week d. Selling Agreement: The Partnership has entered into a selling agreement (the “Selling Agreement”) with Morgan Stanley Wealth Management. Pursuant to the Selling Agreement, Morgan Stanley Wealth Management receives a monthly ongoing placement agent fee equal to 1/12 of 2.0% (a 2.0% annual rate) of the Partnership’s Class A beginning of the month net assets. Class Z Units are not subject to the monthly ongoing placement agent fee. e. Harbor Selling Agreement: As of November 1, 2018, the Partnership entered into an alternative investment selling agent agreement (the “Harbor Selling Agreement”), by and among the Partnership, the General Partner, Morgan Stanley Distribution Inc., and Harbor Investment Advisory, LLC, a Maryland limited liability company (“Harbor”). Pursuant to the Harbor Selling Agreement, MSDI and Harbor have been appointed as a non-exclusive

Trading Activities

Trading Activities	12 Months Ended
	Dec. 31, 2019
Brokers and Dealers [Abstract]
Trading Activities	4. Trading Activities: The Partnership was formed for the purpose of trading contracts in a variety of commodity interests, including derivative financial instruments and derivative commodity instruments. The results of the Partnership’s trading activities are shown in the Partnership’s Statements of Income and Expenses. The Partnership also invests certain of its assets through a “master/feeder” structure. The Partnership’s pro-rata The Customer Agreement and the Funds’ futures brokerage account agreements with MS&Co. give the Partnership and the Funds, respectively, the legal right to net unrealized gains and losses on open futures contracts and open forward contracts in their respective Statements of Financial Condition. The Partnership and the Funds net, for financial reporting purposes, the unrealized gains and losses on open futures contracts and open forward contracts in their respective Statements of Financial Condition as the criteria under ASC 210-20, Balance Sheet All of the Futures Interests owned directly by the Partnership are held for trading purposes. All of the Futures Interests owned by the Funds are held for trading purposes. The monthly average number of futures contracts traded directly by the Partnership during the years ended December 31, 2019 and 2018 was 207 and 44, respectively. The monthly average number of option contracts traded directly by the Partnership during the years ended December 31, 2019 and 2018 was 29 and 2. Trading and transaction fees are based on the number of trades executed by the Trading Advisors and the Partnership’s respective percentage ownership of each Fund. All clearing fees paid to MS&Co. for its direct trading are borne directly by the Partnership. In addition, clearing fees are borne by the Funds and allocated to the Funds’ limited partners/members, including the Partnership. The following tables summarize the gross and net amounts recognized relating to assets and liabilities of the Partnership’s derivatives and their offsetting subject to master netting arrangements or similar agreements as of December 31, 2019 and 2018, respectively. Gross Amounts Amounts Gross Amounts Not Offset in the Offset in the Presented in the Statements of Financial Condition Gross Statements of Statements of Cash Collateral Amounts Financial Financial Financial Received/ December 31, 2019 Recognized Condition Condition Instruments Pledged* Net Amount Assets Futures $ 79,901 $ (79,901 ) $ - $ - $ - $ - Total assets $ 79,901 $ (79,901 ) $ - $ - $ - $ - Liabilities Futures $ (173,382 ) $ 79,901 $ (93,481 ) $ - $ 93,481 $ - Total liabilities $ (173,382 ) $ 79,901 $ (93,481 ) $ - $ 93,481 $ - Net fair value $ - * Gross Amounts Amounts Gross Amounts Not Offset in the Offset in the Presented in the Statements of Financial Condition Gross Statements of Statements of Cash Collateral Amounts Financial Financial Financial Received/ December 31, 2018 Recognized Condition Condition Instruments Pledged* Net Amount Assets Futures $ 15,181 $ (15,181 ) $ - $ - $ - $ - Total assets $ 15,181 $ (15,181 ) $ - $ - $ - $ - Liabilities Futures $ (25,826 ) $ 15,181 $ (10,645 ) $ - $ 10,645 $ - Total liabilities $ (25,826 ) $ 15,181 $ (10,645 ) $ - $ 10,645 $ - Net fair value $ - * * In the event of default by the Partnership, MS&Co., the Partnership’s commodity futures broker and the sole counterparty to the Partnership’s non-exchange-traded The following tables indicate the gross fair values of derivative instruments of futures contracts held directly by the Partnership as separate assets and liabilities as of December 31, 2019 and 2018, respectively. December 31, 2019 Assets Futures Contracts Currencies $ 50,155 Interest Rates Non-U.S. 269 Metals 29,477 Total unrealized appreciation on open futures contracts 79,901 Liabilities Futures Contracts Currencies (169,108) Interest Rates U.S. (2,599) Metals (1,675) Total unrealized depreciation on open futures contracts (173,382) Net unrealized depreciation on open futures contracts $ (93,481) * Assets Options Purchased Currencies $ 21,313 Total options purchased $ 21,313 ** * This amount is in “Net unrealized depreciation on open futures contracts” in the Statements of Financial Condition. ** This amount is in “Options purchased, at fair value” in the Statements of Financial Condition. December 31, 2018 Assets Futures Contracts Currencies $ 15,181 Total unrealized appreciation on open futures contracts 15,181 Liabilities Futures Contracts Currencies (25,826) Total unrealized depreciation on open futures contracts (25,826) Net unrealized depreciation on open futures contracts $ (10,645) * * This amount is in “Net unrealized depreciation on open futures contracts” in the Statements of Financial Condition. The following table indicates the trading gains and losses, by market sector, on derivative instruments traded directly by the Partnership for the years ended December 31, 2019 and 2018, respectively. During the year ended December 31, 2017, no derivative instruments were traded directly by the Partnership. Sector 2019 2018 Currencies $ (223,070) $ 332,447 Energy (18,282) 1,882 Indices (265,258) 68,307 Interest Rates U.S. (95,157) 17,489 Interest Rates Non-U.S. 26,164 (14,624) Metals (6,880) (6,033) Total $ (582,483) *** $ 399,468 *** *** This amount is included in “Total trading results” in the Statements of Income and Expenses.

Fair Value Measurements

Fair Value Measurements	12 Months Ended
	Dec. 31, 2019
Fair Value Disclosures [Abstract]
Fair Value Measurements	5. Fair Value Measurements: Partnership’s and the Funds’ Fair Value Measurements. The fair value of exchange-traded futures, option and forward contracts is determined by the various exchanges, and reflects the settlement price for each contract as of the close of business on the last business day of the reporting period. The fair value of foreign currency forward contracts is extrapolated on a forward basis from the spot prices quoted as of approximately 3:00 P.M. (E.T.) on the last business day of the reporting period from various exchanges. The fair value of non-exchange-traded The Partnership and the Funds consider prices for commodity futures, swap and option contracts to be based on unadjusted quoted prices in active markets for identical assets and liabilities (Level 1). The values of U.S. Treasury bills, non-exchange-traded December 31, 2019 Total Level 1 Level 2 Level 3 Assets Futures $ 79,901 $ 79,901 $ - $ - Options purchased 21,313 21,313 - - Total assets $ 101,214 $ 101,214 $ - $ - Liabilities Futures $ 173,382 $ 173,382 $ - $ - Total liabilities $ 173,382 $ 173,382 $ - $ - December 31, 2018 Total Level 1 Level 2 Level 3 Assets Futures $ 15,181 $ 15,181 $ - $ - Total assets $ 15,181 $ 15,181 $ - $ - Liabilities Futures $ 25,826 $ 25,826 $ - $ - Total liabilities $ 25,826 $ 25,826 $ - $ -

Investment in the Funds

Investment in the Funds	12 Months Ended
	Dec. 31, 2019
Schedule of Investments [Abstract]
Investment in the Funds	6. Investment in the Funds: On or about February 1, 2019, the Partnership allocated a portion of its assets to ADG for trading through investment in ADG Master, a Delaware limited liability company. ADG Master permits accounts managed by ADG using its Systematic Macro Strategy, a proprietary, systematic trading program, to invest together in one trading vehicle. The General Partner is also the trading manager of ADG Master. Individual and pooled accounts currently managed by ADG, including the Partnership, are permitted to be members of ADG Master. The Trading Manager and ADG believe that trading through this master/feeder structure promotes efficiency and economy in the trading process. On or about January 1, 2019, the Partnership allocated a portion of its assets to SECOR for trading through investment in SECOR Master, a Delaware limited partnership. SECOR Master permitted accounts managed by SECOR using a variation of the program traded by SECOR Alpha Master Fund L.P., a proprietary, systematic trading program, to invest together in one trading vehicle. On June 30, 2019, the Partnership fully redeemed its investment in SECOR Master. On or about February 1, 2018, the Partnership allocated a portion of its assets to AE Capital for trading through investment in AE Capital Master, a Delaware limited liability company. AE Capital Master permitted accounts managed by AE Capital using its AE Systematic FX Fund Program, a proprietary, systematic trading system, to invest together in one trading vehicle. Effective April 3, 2019, the General Partner terminated AE Capital as a Trading Advisor to the Partnership. For the interim period from April 4, 2019 through April 30, 2019, the Partnership’s assets previously allocated to AE Capital were not charged a management fee and were credited with interest income at a rate equal to the monthly average of the 4-week On or about January 1, 2019, the Partnership allocated a portion of its assets to Willowbridge for trading through investment in Willowbridge Master, a New York limited partnership. Willowbridge Master permitted accounts managed by Willowbridge using its wPraxis Futures Trading Approach, a proprietary, discretionary trading system, to invest together in one trading vehicle. Effective the close of business on January 31, 2019, the Partnership fully redeemed its investment in Willowbridge Master. On November 1, 2012, the Partnership allocated a portion of its assets to Cambridge for trading through investment in Cambridge Master, a Delaware limited partnership. From October 1, 2018 until its termination effective December 31, 2018, Mesirow had undertaken to perform the Assignment Agreement and be bound by its terms in every way as if it were the original party to it in place of Cambridge. Cambridge Master permitted accounts managed by Cambridge/Mesirow using the Asian Markets Alpha Programme and the Emerging Markets Alpha Programme, each a proprietary, systematic trading program, to invest together in one trading vehicle. Effective December 31, 2018, the Partnership fully redeemed its investment in Cambridge Master. The General Partner is not aware of any material changes to any of the trading programs discussed above or in Note 1, “Organization” during the year ended December 31, 2019. Generally, a limited partner/member in a Fund withdraws all or part of its capital contribution and undistributed profits, if any, from the Fund as of the end of any month (the “Redemption Date”) after a request had been made to the General Partner/Trading Manager at least three days in advance of the Redemption Date. Such withdrawals are classified as a liability when the limited partner/member elects to redeem and informs the Fund. However, for each Fund a limited partner/member may request a withdrawal as of the end of any day if such request is received by the General Partner/Trading Manager at least three days in advance of the proposed withdrawal day. Management fees, ongoing placement agent fees, General Partner fees and incentive fees are charged at the Partnership level. Clearing fees are borne by the Funds and allocated to the Funds’ limited partners/members, including the Partnership. At December 31, 2019, the Partnership owned approximately 34.1% of ADG Master. At December 31, 2018, the Partnership owned approximately 7.6% of AE Capital Master. It is the Partnership’s intention to continue to invest in ADG Master. The performance of the Partnership is directly affected by the performance of the Funds. Expenses to limited partners as a result of the investment in the Funds are approximately the same as they would be if the Partnership traded directly and the redemption rights are not affected. Summarized information reflecting the total assets, liabilities and partners’/members’ capital of the Funds is shown in the following tables: December 31, 2019 Total Assets Total Liabilities Total Capital ADG Master $ 44,209,233 $ 308,783 $ 43,900,450 December 31, 2018 Total Assets Total Liabilities Total Capital Cambridge Master $ 21,433,817 $ 4,151,814 $ 17,282,003 AE Capital Master 19,758,302 99,954 19,658,348 Summarized information reflecting the net investment income (loss), total trading results and net income (loss) of the Funds is shown in the following tables: For the year ended December 31, 2019 Net Investment Total Trading Net Income AE Capital Master (a) $ 71,739 $ (890,810) $ (819,071) SECOR Master (b) (84,266) 2,719,987 2,635,721 Willowbridge Master (c) 220,431 (759,939) (539,508) ADG Master (d) 465,783 179,092 644,875 For the year ended December 31, 2018 Net Investment Total Trading Net Income Cambridge Master Fund $ 371,194 $ (3,386,331) $ (3,015,137) AE Capital Master Fund (e) 180,229 (1,180,663) (1,000,434) (a) From January 1, 2019 through April 30, 2019, the date AE Capital Master terminated operations. (b) From January 1, 2019 through June 30, 2019, the date SECOR Master terminated operations. (c) From January 1, 2019 through January 31, 2019, the date Willowbridge Master terminated operations. (d) From February 1, 2019, commencement of operations for ADG Master, through December 31, 2019. (e) From February 1, 2018, commencement of operations for AE Capital Master, through December 31, 2018. Summarized information reflecting the Partnership’s investment in and the Partnership’s pro-rata December 31, 2019 For the year ended December 31, 2019 % of Expenses Net Funds Partners’ Fair Value Income Clearing Professional Fees Income Investment Redemptions Commodity AE Capital Master (a) - % $ - $ (146,512) $ 9,592 $ 8,603 $ (164,707 ) Portfolio Monthly Commodity SECOR Master (b) - % - 665,225 96,606 7,205 561,414 Portfolio Monthly Commodity Willowbridge Master (c) - % - (45,751 ) 9,757 589 (56,097 ) Portfolio Monthly Commodity ADG Master (d) 47.68% 14,991,927 295,890 21,620 24,065 250,205 Portfolio Monthly Total $ 14,991,927 $ 768,852 $ 137,575 $ 40,462 $ 590,815 December 31, 2018 For the year ended December 31, 2018 % of Expenses Net Funds Partners’ Fair Value Income Clearing Professional Fees Income Investment Redemptions Commodity Cambridge Master Fund - % $ - $ 57,162 $ 1,001 $ 1,017 $ 55,144 Portfolio Monthly Commodity AE Capital Master Fund (e) 28.94% 1,492,447 (75,196 ) 11,474 5,511 (92,181 ) Portfolio Monthly Total $ 1,492,447 $ (18,034 ) $ 12,475 $ 6,528 $ (37,037 ) (a) From January 1, 2019 through April 30, 2019, the date AE Capital Master terminated operations. (b) From January 1, 2019 through June 30, 2019, the date SECOR Master terminated operations. (c) From January 1, 2019 through January 31, 2019, the date Willowbridge Master terminated operations. (d) From February 1, 2019, commencement of operations for ADG Master, through December 31, 2019. (e) From February 1, 2018, commencement of operations for AE Capital Master, through December 31, 2018.

Subscriptions, Distributions an

Subscriptions, Distributions and Redemptions	12 Months Ended
	Dec. 31, 2019
Equity [Abstract]
Subscriptions, Distributions and Redemptions	7. Subscriptions, Distributions and Redemptions: Subscriptions are accepted monthly from investors who become limited partners on the first day of the month after their subscriptions are processed. Distributions are made on a pro-rata

Financial Highlights

Financial Highlights	12 Months Ended
	Dec. 31, 2019
Investment Company [Abstract]
Financial Highlights	8. Financial Highlights: Financial highlights for the limited partner Classes as a whole for the years ended December 31, 2019, 2018 and 2017 were as follows: 2019 2018 2017 Class A Class Z Class A Class A Per Unit Performance (for a unit outstanding throughout the year): * Net realized and unrealized gains (losses) $ (0.05) $ (0.06 ) $ 0.50 $ 0.12 Net investment loss (0.28) (0.13 ) (0.34 ) (0.41 ) Net increase (decrease) for the year (0.33) (0.19 ) 0.16 (0.29 ) Net asset value per Unit, beginning of year 8.71 10.32 8.55 8.84 Net asset value per Unit, end of year $ 8.38 $ 10.13 $ 8.71 $ 8.55 2019 2018 2017 Class A Class Z Class A Class A Ratios to Average Limited Partners’ Capital: Net investment loss ** (3.2) % (1.4) % (4.0) % (4.5) % Operating expenses 5.3 % 3.4 % 7.6 % 5.2 % Expenses borne by the General Partner (0.8) % (0.8) % (3.0) % - % Incentive fees 0.6 % 0.8 % 0.9 % - % Total expenses 5.1 % 3.4 % 5.5 % 5.2 % Total return: Total return before incentive fees (3.2) % (1.1) % 2.8 % (3.3) % Incentive fees (0.6) % (0.7) % (0.9) % - % Total return after incentive fees (3.8) % (1.8) % 1.9 % (3.3) % * Net investment loss per Unit is calculated by dividing the interest income less total expenses by the average number of Units outstanding during the year. The net realized and unrealized gains (losses) per Unit is a balancing amount necessary to reconcile the change in net asset value per Unit with the other per unit information. ** Interest income less total expenses. The above ratios and total return may vary for individual investors based on the timing of capital transactions during the year. Additionally, these ratios are calculated for the limited partner Classes using the limited partners’ share of income, expenses and average limited partners’ capital of the Partnership, and include the income and expenses allocated from the Fund(s).

Financial Instruments

Financial Instruments	12 Months Ended
	Dec. 31, 2019
Investments, All Other Investments [Abstract]
Financial Instruments	9. Financial Instruments: The Partnership and the Funds trade Futures Interests. Futures and forwards represent contracts for delayed delivery of an instrument at a specified date and price. Futures Interests are open commitments until the settlement date, at which time they are realized. They are valued at fair value, generally on a daily basis, and the unrealized gains and losses on open contracts (the difference between contract trade price and market price) are reported in the Statements of Financial Condition as a net unrealized appreciation or depreciation on open futures contracts or net unrealized appreciation or depreciation on open forwards contracts. The resulting net change in unrealized gains and losses is reflected in “Net change in unrealized gains (losses) on open contracts” and “Net change in unrealized gains (losses) on open contracts allocated from the Funds” from one period to the next in the Statements of Income and Expenses. The Partnership’s/Funds’ contracts are accounted for on a trade-date basis. Gains or losses are realized when contracts are liquidated and are determined using the first-in, first-out The fair value of an exchange-traded contract is based on the settlement price quoted by the exchange on the day with respect to which fair value is being determined. If an exchange-traded contract could not have been liquidated on such day due to the operation of daily limits or other rules of the exchange, the settlement price will be equal to the settlement price on the first subsequent day on which the contract could be liquidated. In general, the risks associated with non-exchange non-exchange The Partnership also has credit risk because MS&Co. acts as the commodity futures broker, or the counterparty, with respect to most of the Partnership’s assets. Exchange-traded futures and exchange-traded forward contracts are fair valued on a daily basis, with variations in value settled on a daily basis. With respect to the Partnership’s non-exchange non-exchange non-exchange The General Partner monitors and attempts to mitigate the Partnership’s/Funds’ risk exposure on a daily basis through financial, credit and risk management monitoring systems, and, accordingly, believes that it has effective procedures for evaluating and limiting the credit and market risks to which the Partnership/Funds may be subject. These monitoring systems generally allow the General Partner to statistically analyze actual trading results with risk adjusted performance indicators and correlation statistics. In addition, online monitoring systems provide account analysis of futures and forward contracts by sector, margin requirements, gain and loss transactions and collateral positions. The U.S. Treasury bills and Futures Interests traded by the Partnership and the Funds involve varying degrees of related market risk. Market risk is often dependent upon changes in the level or volatility of interest rates, exchange rates, and prices of financial instruments and commodities, factors that result in frequent changes in the fair value of the Partnership’s open positions, and consequently in its earnings, whether realized or unrealized, and cash flow. Gains and losses on open positions of exchange-traded futures, exchange-traded forward, and exchange-traded futures-styled option contracts are settled daily through variation margin. Gains and losses on non-exchange non-exchange In the ordinary course of business, the Partnership and the Funds enter into contracts and agreements that contain various representations and warranties and which provide general indemnifications. The Partnership’s/Funds’ maximum exposure under these arrangements cannot be determined, as this could include future claims that have not yet been made against the Partnership/Funds. The General Partner/Trading Manager consider the risk of any future obligation relating to these indemnifications to be remote.

Subsequent Events

Subsequent Events	12 Months Ended
	Dec. 31, 2019
Subsequent Events [Abstract]
Subsequent Events	10. Subsequent Events: The General Partner evaluates events that occur after the balance sheet date but before and up until financial statements are available to be issued. The General Partner has assessed the subsequent events through the date the financial statements were issued and has determined that there were no subsequent events requiring adjustment to or disclosure in each respective Partnership’s financial statements.

Basis of Presentation and Sum_2

Basis of Presentation and Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2019
Accounting Policies [Abstract]
Use of Estimates	Use of Estimates
Profit Allocation	Profit Allocation.
Statement of Cash Flows	Statement of Cash Flows. “Statement of Cash Flows.”
Partnership's Investment in the Funds	Partnership’s Investment in the Funds.
Partnership's/Funds' Derivative Investments	Partnership’s/Funds’ Derivative Investments. The Partnership and the Funds do not isolate the portion of the results of operations arising from the effect of changes in foreign exchange rates on investments from fluctuations due to changes in market prices of investments held. Such fluctuations are included in total trading results in the Partnership’s/Funds’ Statements of Income and Expenses.
Partnership's Cash	Partnership’s Cash.
Foreign Currency Transactions and Translation	Foreign Currency Transactions and Translation.
Income Taxes	Income Taxes. “Income Taxes,” “more-likely-than-not” more-likely-than-not
Investment Company Status	Investment Company Status. 2013-08, “Financial Services—Investment Companies (Topic 946): Amendments to the Scope, Measurement and Disclosure Requirements”
Net Income (Loss) per Unit	Net Income (Loss) per Unit. “Financial Services—Investment Companies.”

Trading Activities (Tables)

Trading Activities (Tables)	12 Months Ended
	Dec. 31, 2019
Brokers and Dealers [Abstract]
Offsetting of Derivative Assets and Liabilities	The following tables summarize the gross and net amounts recognized relating to assets and liabilities of the Partnership’s derivatives and their offsetting subject to master netting arrangements or similar agreements as of December 31, 2019 and 2018, respectively. Gross Amounts Amounts Gross Amounts Not Offset in the Offset in the Presented in the Statements of Financial Condition Gross Statements of Statements of Cash Collateral Amounts Financial Financial Financial Received/ December 31, 2019 Recognized Condition Condition Instruments Pledged* Net Amount Assets Futures $ 79,901 $ (79,901 ) $ - $ - $ - $ - Total assets $ 79,901 $ (79,901 ) $ - $ - $ - $ - Liabilities Futures $ (173,382 ) $ 79,901 $ (93,481 ) $ - $ 93,481 $ - Total liabilities $ (173,382 ) $ 79,901 $ (93,481 ) $ - $ 93,481 $ - Net fair value $ - * Gross Amounts Amounts Gross Amounts Not Offset in the Offset in the Presented in the Statements of Financial Condition Gross Statements of Statements of Cash Collateral Amounts Financial Financial Financial Received/ December 31, 2018 Recognized Condition Condition Instruments Pledged* Net Amount Assets Futures $ 15,181 $ (15,181 ) $ - $ - $ - $ - Total assets $ 15,181 $ (15,181 ) $ - $ - $ - $ - Liabilities Futures $ (25,826 ) $ 15,181 $ (10,645 ) $ - $ 10,645 $ - Total liabilities $ (25,826 ) $ 15,181 $ (10,645 ) $ - $ 10,645 $ - Net fair value $ - * * In the event of default by the Partnership, MS&Co., the Partnership’s commodity futures broker and the sole counterparty to the Partnership’s non-exchange-traded
Gross Fair Values of Derivative Instruments of Futures and Forward Contracts as Separate Assets and Liabilities	The following tables indicate the gross fair values of derivative instruments of futures contracts held directly by the Partnership as separate assets and liabilities as of December 31, 2019 and 2018, respectively. December 31, 2019 Assets Futures Contracts Currencies $ 50,155 Interest Rates Non-U.S. 269 Metals 29,477 Total unrealized appreciation on open futures contracts 79,901 Liabilities Futures Contracts Currencies (169,108) Interest Rates U.S. (2,599) Metals (1,675) Total unrealized depreciation on open futures contracts (173,382) Net unrealized depreciation on open futures contracts $ (93,481) * Assets Options Purchased Currencies $ 21,313 Total options purchased $ 21,313 ** * This amount is in “Net unrealized depreciation on open futures contracts” in the Statements of Financial Condition. ** This amount is in “Options purchased, at fair value” in the Statements of Financial Condition. December 31, 2018 Assets Futures Contracts Currencies $ 15,181 Total unrealized appreciation on open futures contracts 15,181 Liabilities Futures Contracts Currencies (25,826) Total unrealized depreciation on open futures contracts (25,826) Net unrealized depreciation on open futures contracts $ (10,645) * * This amount is in “Net unrealized depreciation on open futures contracts” in the Statements of Financial Condition.
Trading Gains and Losses, by Market Sector, on Derivative Instruments	The following table indicates the trading gains and losses, by market sector, on derivative instruments traded directly by the Partnership for the years ended December 31, 2019 and 2018, respectively. During the year ended December 31, 2017, no derivative instruments were traded directly by the Partnership. Sector 2019 2018 Currencies $ (223,070) $ 332,447 Energy (18,282) 1,882 Indices (265,258) 68,307 Interest Rates U.S. (95,157) 17,489 Interest Rates Non-U.S. 26,164 (14,624) Metals (6,880) (6,033) Total $ (582,483) *** $ 399,468 *** *** This amount is included in “Total trading results” in the Statements of Income and Expenses.

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	12 Months Ended
	Dec. 31, 2019
Fair Value Disclosures [Abstract]
Derivative Instrument Fair Value Based on Hierarchy	December 31, 2019 Total Level 1 Level 2 Level 3 Assets Futures $ 79,901 $ 79,901 $ - $ - Options purchased 21,313 21,313 - - Total assets $ 101,214 $ 101,214 $ - $ - Liabilities Futures $ 173,382 $ 173,382 $ - $ - Total liabilities $ 173,382 $ 173,382 $ - $ - December 31, 2018 Total Level 1 Level 2 Level 3 Assets Futures $ 15,181 $ 15,181 $ - $ - Total assets $ 15,181 $ 15,181 $ - $ - Liabilities Futures $ 25,826 $ 25,826 $ - $ - Total liabilities $ 25,826 $ 25,826 $ - $ -

Investment in the Funds (Tables

Investment in the Funds (Tables)	12 Months Ended
	Dec. 31, 2019
Schedule of Investments [Abstract]
Assets, Liabilities and Partners'/ Members' Capital of the Funds	Summarized information reflecting the total assets, liabilities and partners’/members’ capital of the Funds is shown in the following tables: December 31, 2019 Total Assets Total Liabilities Total Capital ADG Master $ 44,209,233 $ 308,783 $ 43,900,450 December 31, 2018 Total Assets Total Liabilities Total Capital Cambridge Master $ 21,433,817 $ 4,151,814 $ 17,282,003 AE Capital Master 19,758,302 99,954 19,658,348
Net Investment Income (Loss), Trading Results and Net Income (Loss) for th Funds	Summarized information reflecting the net investment income (loss), total trading results and net income (loss) of the Funds is shown in the following tables: For the year ended December 31, 2019 Net Investment Total Trading Net Income AE Capital Master (a) $ 71,739 $ (890,810) $ (819,071) SECOR Master (b) (84,266) 2,719,987 2,635,721 Willowbridge Master (c) 220,431 (759,939) (539,508) ADG Master (d) 465,783 179,092 644,875 For the year ended December 31, 2018 Net Investment Total Trading Net Income Cambridge Master Fund $ 371,194 $ (3,386,331) $ (3,015,137) AE Capital Master Fund (e) 180,229 (1,180,663) (1,000,434) (a) From January 1, 2019 through April 30, 2019, the date AE Capital Master terminated operations. (b) From January 1, 2019 through June 30, 2019, the date SECOR Master terminated operations. (c) From January 1, 2019 through January 31, 2019, the date Willowbridge Master terminated operations. (d) From February 1, 2019, commencement of operations for ADG Master, through December 31, 2019. (e) From February 1, 2018, commencement of operations for AE Capital Master, through December 31, 2018.
Partnership's Investments in and Partnership's Pro-rata Share of Results of Operations of the Funds	Summarized information reflecting the Partnership’s investment in and the Partnership’s pro-rata December 31, 2019 For the year ended December 31, 2019 % of Expenses Net Funds Partners’ Fair Value Income Clearing Professional Fees Income Investment Redemptions Commodity AE Capital Master (a) - % $ - $ (146,512) $ 9,592 $ 8,603 $ (164,707 ) Portfolio Monthly Commodity SECOR Master (b) - % - 665,225 96,606 7,205 561,414 Portfolio Monthly Commodity Willowbridge Master (c) - % - (45,751 ) 9,757 589 (56,097 ) Portfolio Monthly Commodity ADG Master (d) 47.68% 14,991,927 295,890 21,620 24,065 250,205 Portfolio Monthly Total $ 14,991,927 $ 768,852 $ 137,575 $ 40,462 $ 590,815 December 31, 2018 For the year ended December 31, 2018 % of Expenses Net Funds Partners’ Fair Value Income Clearing Professional Fees Income Investment Redemptions Commodity Cambridge Master Fund - % $ - $ 57,162 $ 1,001 $ 1,017 $ 55,144 Portfolio Monthly Commodity AE Capital Master Fund (e) 28.94% 1,492,447 (75,196 ) 11,474 5,511 (92,181 ) Portfolio Monthly Total $ 1,492,447 $ (18,034 ) $ 12,475 $ 6,528 $ (37,037 ) (a) From January 1, 2019 through April 30, 2019, the date AE Capital Master terminated operations. (b) From January 1, 2019 through June 30, 2019, the date SECOR Master terminated operations. (c) From January 1, 2019 through January 31, 2019, the date Willowbridge Master terminated operations. (d) From February 1, 2019, commencement of operations for ADG Master, through December 31, 2019. (e) From February 1, 2018, commencement of operations for AE Capital Master, through December 31, 2018.

Financial Highlights (Tables)

Financial Highlights (Tables)	12 Months Ended
	Dec. 31, 2019
Investment Company [Abstract]
Financial Highlights for Limited Partner Class	Financial highlights for the limited partner Classes as a whole for the years ended December 31, 2019, 2018 and 2017 were as follows: 2019 2018 2017 Class A Class Z Class A Class A Per Unit Performance (for a unit outstanding throughout the year): * Net realized and unrealized gains (losses) $ (0.05) $ (0.06 ) $ 0.50 $ 0.12 Net investment loss (0.28) (0.13 ) (0.34 ) (0.41 ) Net increase (decrease) for the year (0.33) (0.19 ) 0.16 (0.29 ) Net asset value per Unit, beginning of year 8.71 10.32 8.55 8.84 Net asset value per Unit, end of year $ 8.38 $ 10.13 $ 8.71 $ 8.55 2019 2018 2017 Class A Class Z Class A Class A Ratios to Average Limited Partners’ Capital: Net investment loss ** (3.2) % (1.4) % (4.0) % (4.5) % Operating expenses 5.3 % 3.4 % 7.6 % 5.2 % Expenses borne by the General Partner (0.8) % (0.8) % (3.0) % - % Incentive fees 0.6 % 0.8 % 0.9 % - % Total expenses 5.1 % 3.4 % 5.5 % 5.2 % Total return: Total return before incentive fees (3.2) % (1.1) % 2.8 % (3.3) % Incentive fees (0.6) % (0.7) % (0.9) % - % Total return after incentive fees (3.8) % (1.8) % 1.9 % (3.3) % * Net investment loss per Unit is calculated by dividing the interest income less total expenses by the average number of Units outstanding during the year. The net realized and unrealized gains (losses) per Unit is a balancing amount necessary to reconcile the change in net asset value per Unit with the other per unit information. ** Interest income less total expenses.

Organization - Additional Infor

Organization - Additional Information (Detail) - General Partner [Member]	12 Months Ended
	Dec. 31, 2019
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Required interest in the equity of each partnership	1.00%
Minimum [Member]
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Percentage of expenses to net assets to be covered by General Partner	0.85%

Basis of Presentation and Sum_3

Basis of Presentation and Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Accounting Policies [Abstract]
Cash denominated in foreign currencies	$ (86,859)	$ (13,519)
Cash denominated in foreign currencies, proceeds	85,982	$ 13,573
Uncertain tax position	$ 0
Open tax year	2016 2017 2018 2019

Agreements - Additional Informa

Agreements - Additional Information (Detail) - USD ($)	2 Months Ended	3 Months Ended	6 Months Ended	9 Months Ended	10 Months Ended	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2018	Jun. 30, 2019	Sep. 30, 2018	Oct. 31, 2018	Dec. 31, 2019	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				$ 602,161	$ 118,195
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%
Minimum [Member] | General Partner [Member]
Investment [Line Items]
Percentage of expenses to net assets to be covered by General Partner						0.85%
ADG [Member]
Investment [Line Items]
Percentage of monthly management fee						0.0833%
Percentage of management fee						1.00%
Incentive fee, quarterly trading profits basis						25.00%
CMF AE Capital Master Fund LLC [Member]
Investment [Line Items]
Percentage of monthly management fee						0.0833%
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%
SECOR [Member]
Investment [Line Items]
Percentage of monthly management fee			0.0958%
Percentage of management fee			1.15%
Incentive fee, quarterly trading profits basis			25.00%
Willowbridge [Member]
Investment [Line Items]
Percentage of monthly management fee						0.1041%
Percentage of management fee						1.25%
Incentive fee, quarterly trading profits basis						20.00%
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%

Trading Activities - Additional

Trading Activities - Additional Information (Detail) - Contract	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Futures Contracts [Member]
Derivative [Line Items]
Average number of derivative contracts traded	207	44
Option Contracts [Member]
Derivative [Line Items]
Average number of derivative contracts traded	29	2

Trading Activities - Offsetting

Trading Activities - Offsetting of Derivative Assets and Liabilities (Detail) - USD ($)	Dec. 31, 2019	Dec. 31, 2018
Derivative [Line Items]
Gross Amounts Recognized, Assets	$ 79,901	$ 15,181
Gross Amounts Offset in the Statements of Financial Condition, Assets	(79,901)	(15,181)
Gross Amounts Recognized, Liabilities	(173,382)	(25,826)
Gross Amounts Offset in the Statements of Financial Condition, Liabilities	79,901	15,181
Amounts Presented in the Statements of Financial Condition, Liabilities	(93,481)	(10,645)
Gross Amounts Not Offset in the Statements of Financial Condition, Cash Collateral Received/ Pledged, Liabilities	93,481	10,645
Futures Contracts [Member] | MS&Co. [Member]
Derivative [Line Items]
Gross Amounts Recognized, Assets	79,901	15,181
Gross Amounts Offset in the Statements of Financial Condition, Assets	(79,901)	(15,181)
Gross Amounts Recognized, Liabilities	(173,382)	(25,826)
Gross Amounts Offset in the Statements of Financial Condition, Liabilities	79,901	15,181
Amounts Presented in the Statements of Financial Condition, Liabilities	(93,481)	(10,645)
Gross Amounts Not Offset in the Statements of Financial Condition, Cash Collateral Received/ Pledged, Liabilities	$ 93,481	$ 10,645

Trading Activities - Gross Fair

Trading Activities - Gross Fair Values of Derivative Instruments of Futures and Forward Contracts Traded (Detail) - USD ($)	Dec. 31, 2019	Dec. 31, 2018
Futures Contracts [Member]
Derivative [Line Items]
Total unrealized appreciation on open futures contracts	$ 79,901	$ 15,181
Total unrealized depreciation on open futures contracts	(173,382)	(25,826)
Net unrealized depreciation on open futures contracts	(93,481)	(10,645)
Futures Contracts [Member] | Currencies [Member]
Derivative [Line Items]
Total unrealized appreciation on open futures contracts	50,155	15,181
Total unrealized depreciation on open futures contracts	(169,108)	$ (25,826)
Futures Contracts [Member] | Metals [Member]
Derivative [Line Items]
Total unrealized appreciation on open futures contracts	29,477
Total unrealized depreciation on open futures contracts	(1,675)
Futures Contracts [Member] | Interest Rates US [Member]
Derivative [Line Items]
Total unrealized appreciation on open futures contracts	269
Total unrealized depreciation on open futures contracts	(2,599)
Options [Member]
Derivative [Line Items]
Total unrealized appreciation on open futures contracts	21,313
Options [Member] | Currencies [Member]
Derivative [Line Items]
Total unrealized appreciation on open futures contracts	$ 21,313

Trading Activities - Schedule o

Trading Activities - Schedule of Trading Gains and Losses by Market Sector, on Derivative Instruments (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Derivative [Line Items]
Total trading results	$ (582,483)	$ 399,468
Currencies [Member]
Derivative [Line Items]
Total trading results	(223,070)	332,447
Energy [Member]
Derivative [Line Items]
Total trading results	(18,282)	1,882
Indices [Member]
Derivative [Line Items]
Total trading results	(265,258)	68,307
Interest Rates U.S. [Member]
Derivative [Line Items]
Total trading results	(95,157)	17,489
Interest Rates Non-U.S. [Member]
Derivative [Line Items]
Total trading results	26,164	(14,624)
Metals [Member]
Derivative [Line Items]
Total trading results	$ (6,880)	$ (6,033)

Fair Value Measurements - Deriv

Fair Value Measurements - Derivative Instrument Fair Value Based on Hierarchy (Detail) - USD ($)	Dec. 31, 2019	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	$ 101,214	$ 15,181
Total liabilities	173,382	25,826
Futures Contracts [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	79,901	15,181
Total liabilities	173,382	25,826
Options purchased [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	21,313
Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	101,214	15,181
Total liabilities	173,382	25,826
Level 1 [Member] | Futures Contracts [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	79,901	15,181
Total liabilities	173,382	$ 25,826
Level 1 [Member] | Options purchased [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	$ 21,313

Investment in the Funds - Addit

Investment in the Funds - Additional Information (Detail) - TradingVehicle	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
CMF AE Capital Master Fund LLC [Member]
Investment [Line Items]
Number of trading vehicles	1
Percentage owned by partnership		7.60%
Cambridge Master Fund L.P. [Member]
Investment [Line Items]
Number of trading vehicles	1
SECOR Master Fund LP [Member]
Investment [Line Items]
Number of trading vehicles	1
CMF ADG Master Fund LLC [Member]
Investment [Line Items]
Number of trading vehicles	1
Percentage owned by partnership	34.10%
Willowbridge Master Fund LP [Member]
Investment [Line Items]
Number of trading vehicles	1

Investment in the Funds - Asset

Investment in the Funds - Assets, Liabilities and Partners'/ Members' Capital of the Funds (Detail) - USD ($)	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Investment Holdings [Line Items]
Total Assets	$ 32,471,449	$ 5,372,782
Total Liabilities	1,030,944	214,960
Total Capital	31,440,505	5,157,822	$ 6,433,098	$ 9,094,995
Cambridge Master Fund L.P. [Member]
Investment Holdings [Line Items]
Total Assets		21,433,817
Total Liabilities		4,151,814
Total Capital		17,282,003
CMF AE Capital Master Fund LLC [Member]
Investment Holdings [Line Items]
Total Assets		19,758,302
Total Liabilities		99,954
Total Capital		$ 19,658,348
CMF ADG Master Fund LLC [Member]
Investment Holdings [Line Items]
Total Assets	44,209,233
Total Liabilities	308,783
Total Capital	$ 43,900,450

Investment in the Funds - Net I

Investment in the Funds - Net Investment Income (Loss), Trading Results and Net Income (Loss) for the Funds (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Investment Holdings [Line Items]
Net Investment Income (Loss)	$ (1,128,714)	$ (231,852)	$ (376,822)
Total Trading Results	(173,643)	346,115	241,399
Net income (loss)	(1,302,357)	114,263	$ (135,423)
Cambridge Master Fund L.P. [Member]
Investment Holdings [Line Items]
Net Investment Income (Loss)		371,194
Total Trading Results		(3,386,331)
Net income (loss)		(3,015,137)
CMF AE Capital Master Fund LLC [Member]
Investment Holdings [Line Items]
Net Investment Income (Loss)	71,739	180,229
Total Trading Results	(890,810)	(1,180,663)
Net income (loss)	(819,071)	$ (1,000,434)
SECOR Master Fund LP [Member]
Investment Holdings [Line Items]
Net Investment Income (Loss)	(84,266)
Total Trading Results	2,719,987
Net income (loss)	2,635,721
Willowbridge Master Fund LP [Member]
Investment Holdings [Line Items]
Net Investment Income (Loss)	220,431
Total Trading Results	(759,939)
Net income (loss)	(539,508)
CMF ADG Master Fund LLC [Member]
Investment Holdings [Line Items]
Net Investment Income (Loss)	465,783
Total Trading Results	179,092
Net income (loss)	$ 644,875

Investment in the Funds - Partn

Investment in the Funds - Partnership's Investments in and Partnership's Pro-rata Share of Results of Operations of the Funds (Detail) - USD ($)		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Investment Holdings [Line Items]
% of Partners' Capital		47.68%	28.94%
Fair Value	[1]	$ 14,991,927	$ 1,492,447
Expenses, Clearing Fees		96,905	24,277
Expenses, Professional fees		306,433	177,853
Net income (loss)		(1,302,357)	114,263	$ (135,423)
Cambridge Master Fund L.P. [Member]
Investment Holdings [Line Items]
Net income (loss)			(3,015,137)
CMF AE Capital Master Fund LLC [Member]
Investment Holdings [Line Items]
Net income (loss)		(819,071)	(1,000,434)
SECOR Master Fund LP [Member]
Investment Holdings [Line Items]
Net income (loss)		2,635,721
Willowbridge Master Fund LP [Member]
Investment Holdings [Line Items]
Net income (loss)		(539,508)
CMF ADG Master Fund LLC [Member]
Investment Holdings [Line Items]
Net income (loss)		644,875
Investment in Funds [Member]
Investment Holdings [Line Items]
Fair Value		14,991,927	1,492,447
Income (Loss)		768,852	(18,034)
Expenses, Clearing Fees		137,575	12,475
Expenses, Professional fees		40,462	6,528
Net income (loss)		$ 590,815	(37,037)
Investment in Funds [Member] | Commodity [Member] | Cambridge Master Fund L.P. [Member]
Investment Holdings [Line Items]
Income (Loss)			57,162
Expenses, Clearing Fees			1,001
Expenses, Professional fees			1,017
Net income (loss)			$ 55,144
Investment Objective			Commodity Portfolio
Redemptions Permitted			Monthly
Investment in Funds [Member] | Commodity [Member] | CMF AE Capital Master Fund LLC [Member]
Investment Holdings [Line Items]
% of Partners' Capital		0.00%	28.94%
Fair Value		$ 0	$ 1,492,447
Income (Loss)		(146,512)	(75,196)
Expenses, Clearing Fees		9,592	11,474
Expenses, Professional fees		8,603	5,511
Net income (loss)		$ (164,707)	$ (92,181)
Investment Objective		Commodity Portfolio	Commodity Portfolio
Redemptions Permitted		Monthly	Monthly
Investment in Funds [Member] | Commodity [Member] | SECOR Master Fund LP [Member]
Investment Holdings [Line Items]
% of Partners' Capital		0.00%
Fair Value		$ 0
Income (Loss)		665,225
Expenses, Clearing Fees		96,606
Expenses, Professional fees		7,205
Net income (loss)		$ 561,414
Investment Objective		Commodity Portfolio
Redemptions Permitted		Monthly
Investment in Funds [Member] | Commodity [Member] | Willowbridge Master Fund LP [Member]
Investment Holdings [Line Items]
% of Partners' Capital		0.00%
Fair Value		$ 0
Income (Loss)		(45,751)
Expenses, Clearing Fees		9,757
Expenses, Professional fees		589
Net income (loss)		$ (56,097)
Investment Objective		Commodity Portfolio
Redemptions Permitted		Monthly
Investment in Funds [Member] | Commodity [Member] | CMF ADG Master Fund LLC [Member]
Investment Holdings [Line Items]
% of Partners' Capital		47.68%
Fair Value		$ 14,991,927
Income (Loss)		295,890
Expenses, Clearing Fees		21,620
Expenses, Professional fees		24,065
Net income (loss)		$ 250,205
Investment Objective		Commodity Portfolio
Redemptions Permitted		Monthly
[1]	Defined in Note 1.

Subscriptions, Distributions _2

Subscriptions, Distributions and Redemptions - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2019USD ($)
Statement of Partners' Capital [Abstract]
Profit sharing distribution made to date	$ 0
Percentage of limited partner units redeem to net asset value per unit	100.00%

Financial Highlights - Financia

Financial Highlights - Financial Highlights for Limited Partner Class (Detail) - $ / shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Class A [Member]
Per Unit Performance (for a unit outstanding throughout the year):
Net asset value per Unit, beginning of period	$ 8.71	$ 8.55
Net asset value per Unit, end of period	8.38	8.71	$ 8.55
Class A [Member] | Limited Partners [Member]
Per Unit Performance (for a unit outstanding throughout the year):
Net realized and unrealized gains (losses)	(0.05)	0.50	0.12
Net investment loss	(0.28)	(0.34)	(0.41)
Net increase (decrease) for the period	(0.33)	0.16	(0.29)
Net asset value per Unit, beginning of period	8.71	8.55	8.84
Net asset value per Unit, end of period	$ 8.38	$ 8.71	$ 8.55
Ratios to Average Limited Partners' Capital:
Net investment loss	(3.20%)	(4.00%)	(4.50%)
Operating expenses	5.30%	7.60%	5.20%
Expenses borne by the General Partner	(0.80%)	(3.00%)
Incentive fees	0.60%	0.90%
Total expenses	5.10%	5.50%	5.20%
Total return:
Incentive fees	(0.60%)	(0.90%)
Class A [Member] | Total Return [Member]
Ratios to Average Limited Partners' Capital:
Incentive fees	0.60%	0.90%
Total return:
Total return before incentive fees	(3.20%)	2.80%	(3.30%)
Incentive fees	(0.60%)	(0.90%)
Total return after incentive fees	(3.80%)	1.90%	(3.30%)
Class Z [Member]
Per Unit Performance (for a unit outstanding throughout the year):
Net asset value per Unit, beginning of period	$ 10.32
Net asset value per Unit, end of period	10.13	$ 10.32
Class Z [Member] | Limited Partners [Member]
Per Unit Performance (for a unit outstanding throughout the year):
Net realized and unrealized gains (losses)	(0.06)
Net investment loss	(0.13)
Net increase (decrease) for the period	(0.19)
Net asset value per Unit, beginning of period	10.32
Net asset value per Unit, end of period	$ 10.13	$ 10.32
Ratios to Average Limited Partners' Capital:
Net investment loss	(1.40%)
Operating expenses	3.40%
Expenses borne by the General Partner	(0.80%)
Incentive fees	0.80%
Total expenses	3.40%
Total return:
Incentive fees	(0.80%)
Class Z [Member] | Total Return [Member]
Ratios to Average Limited Partners' Capital:
Incentive fees	0.70%
Total return:
Total return before incentive fees	(1.10%)
Incentive fees	(0.70%)
Total return after incentive fees	(1.80%)