Ceres Abingdon (ABFF) 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 ABINGDON L.P.
Entity Central Index Key	0001386164
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			$ 135,382,989
Entity Common Stock, Shares Outstanding		90,331.7847
Class D [Member]
Document Information [Line Items]
Entity Public Float			22,802,983
Entity Common Stock, Shares Outstanding		4,532.8096
Class Z [Member]
Document Information [Line Items]
Entity Public Float			$ 1,309,555
Entity Common Stock, Shares Outstanding		187.2652

Statements of Financial Conditi

Statements of Financial Condition - USD ($)	Dec. 31, 2019	Dec. 31, 2018
Assets:
Investment in the Master, at fair value (Note 1)	$ 128,504,409	$ 183,004,312
Redemptions receivable from the Master	1,274,473	1,543,808
Cash at MS&Co. (Note 3c)	340,290	333,269
Total assets	130,119,172	184,881,389
Accrued expenses:
Ongoing selling agent fees (Note 3d)	207,853	278,171
Management fees (Note 3b)	162,062	230,423
General Partner fees (Note 3a)	108,041	153,615
Professional fees	261,695	264,945
Redemptions payable to Limited Partners (Note 6)	761,466	836,276
Total liabilities	1,501,117	1,763,430
Partners' Capital (Notes 1 and 6):
Total partners' capital (net asset value)	128,618,055	183,117,959
Total liabilities and partners' capital	130,119,172	184,881,389
Class A [Member]
Partners' Capital (Notes 1 and 6):
Limited Partners	121,031,295	156,601,179
Total partners' capital (net asset value)	$ 121,031,295	$ 156,601,179
Net asset value per Redeemable Unit	$ 1,311.75	$ 1,313.04
Class D [Member]
Partners' Capital (Notes 1 and 6):
Limited Partners	$ 5,877,521	$ 22,960,575
Total partners' capital (net asset value)	$ 5,877,521	$ 22,960,575
Net asset value per Redeemable Unit	$ 1,296.66	$ 1,281.77
Class Z [Member]
Partners' Capital (Notes 1 and 6):
General Partner	$ 1,455,237	$ 2,006,492
Limited Partners	254,002	1,549,713
Total partners' capital (net asset value)	$ 1,709,239	$ 3,556,205
Net asset value per Redeemable Unit	$ 1,356.37	$ 1,330.76

Statements of Financial Condi_2

Statements of Financial Condition (Parenthetical) - shares	Dec. 31, 2019	Dec. 31, 2018
Class A [Member]
Limited Partners capital, Redeemable Units outstanding	92,267.0207	119,266.5507
Class D [Member]
Limited Partners capital, Redeemable Units outstanding	4,532.8096	17,913.2276
Class Z [Member]
General Partner capital, Redeemable Units outstanding	1,072.8890	1,507.7830
Limited Partners capital, Redeemable Units outstanding	187.2652	1,164.5352

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 allocated from the Master (Note 3c)		$ 3,090,440	$ 3,308,838	$ 1,488,469
Expenses:
Expenses allocated from the Master		284,917	294,552	301,010
Ongoing selling agent fees (Note 3d)		2,965,488	3,622,873	4,116,542
Management fees (Note 3b)		2,417,719	2,990,850	3,326,947
General Partner fees (Note 3a)		1,611,813	1,993,899	2,217,964
Professional fees		468,791	552,410	583,999
Total expenses		7,748,728	9,454,584	10,546,462
Net investment loss		(4,658,288)	(6,145,746)	(9,057,993)
Net gains (losses) on investment in the Master:
Net realized gains (losses) on closed contracts allocated from the Master		4,109,375	7,880,690	18,452,640
Net change in unrealized gains (losses) on open contracts allocated from the Master		2,680,697	(13,113,820)	3,212,470
Total trading results		6,790,072	(5,233,130)	21,665,110
Net income (loss)		2,131,784	(11,378,876)	12,607,117
Class A [Member]
Net gains (losses) on investment in the Master:
Net income (loss)		$ 529,247	$ (10,140,103)	$ 10,600,693
Net income (loss) per Redeemable Unit	[1]	$ (1.29)	$ (81.25)	$ 84.35
Weighted average Redeemable Units outstanding		105,962.3391	125,059.6037	151,818.6357
Class D [Member]
Net gains (losses) on investment in the Master:
Net income (loss)		$ 1,473,194	$ (1,117,293)	$ 1,769,766
Net income (loss) per Redeemable Unit	[1]	$ 14.89	$ (62.37)	$ 97.04
Weighted average Redeemable Units outstanding		12,935.6935	17,913.2276	16,623.8706
Class Z [Member]
Net gains (losses) on investment in the Master:
Net income (loss)		$ 129,343	$ (121,480)	$ 236,658
Net income (loss) per Redeemable Unit	[1]	$ 25.61	$ (54.31)	$ 109.61
Weighted average Redeemable Units outstanding		2,049.8532	2,766.4310	2,773.6683
[1]	Represents the change in net asset value per Redeemable Unit.

Statements of Changes in Partne

Statements of Changes in Partners' Capital - USD ($)	Total	Limited Partners [Member]	General Partner [Member]	Class A [Member]	Class A [Member]Limited Partners [Member]	Class A [Member]General Partner [Member]	Class D [Member]	Class D [Member]Limited Partners [Member]	Class D [Member]General Partner [Member]	Class Z [Member]	Class Z [Member]Limited Partners [Member]	Class Z [Member]General Partner [Member]
Net asset value per Redeemable Unit					$ 1,309.94			$ 1,247.10			$ 1,275.46
Balance, value at Dec. 31, 2016	$ 217,564,351			$ 197,142,459			$ 17,384,759			$ 3,037,133
Balance, Redeemable Units at Dec. 31, 2016	166,818.7745			150,497.4117			13,940.1566			2,381.2062
Subscriptions, value		$ 34,030,421	$ 275,265		$ 26,970,421			$ 5,000,000			$ 2,060,000	$ 275,265
Subscriptions, Redeemable Units		26,228.3620	215.8170		20,613.6240			4,033.0710			1,581.6670	215.8170
Redemptions, value		$ (56,430,652)	$ (360,000)		$ (55,269,803)			$ (76,657)			$ (1,084,192)	$ (360,000)
Redemptions, Redeemable Units		(43,351.7100)	(292.1440)		(42,412.1360)			(60)			(879.5740)	(292.1440)
Net income (loss)	$ 12,607,117			$ 10,600,693			$ 1,769,766			$ 236,658
Balance, value at Dec. 31, 2017	$ 207,686,502			$ 179,443,770			$ 24,077,868			$ 4,164,864
Balance, Redeemable Units at Dec. 31, 2017	149,619.0995			128,698.8997			17,913.2276			3,006.9722
Net asset value per Redeemable Unit				$ 1,394.29	$ 1,394.29		$ 1,344.14	$ 1,344.14		$ 1,385.07	$ 1,385.07
Subscriptions, value		$ 7,296,049			$ 7,296,049
Subscriptions, Redeemable Units		5,218.4370			5,218.4370
Redemptions, value		$ (20,010,716)	$ (475,000)		$ (19,998,537)						$ (12,179)	$ (475,000)
Redemptions, Redeemable Units		(14,659.7860)	(325.6540)		(14,650.7860)						(9)	(325.6540)
Net income (loss)	$ (11,378,876)			$ (10,140,103)			$ (1,117,293)			$ (121,480)
Balance, value at Dec. 31, 2018	$ 183,117,959			$ 156,601,179			$ 22,960,575			$ 3,556,205
Balance, Redeemable Units at Dec. 31, 2018	139,852.0965			119,266.5507			17,913.2276			2,672.3182
Net asset value per Redeemable Unit				$ 1,313.04	$ 1,313.04		$ 1,281.77	$ 1,281.77		$ 1,330.76	$ 1,330.76
Subscriptions, value		$ 338,425			$ 338,425			$ 0			$ 0
Subscriptions, Redeemable Units		256.3490			256.3490			0			0
Redemptions, value		$ (56,335,099)	$ (635,014)		$ (36,437,556)	$ 0		$ (18,556,248)	$ 0		$ (1,341,295)	$ (635,014)
Redemptions, Redeemable Units		(41,613.5670)	(434.8940)		(27,255.8790)	0		(13,380.4180)	0		(977.2700)	(434.8940)
Net income (loss)	$ 2,131,784			$ 529,247			$ 1,473,194			$ 129,343
Balance, value at Dec. 31, 2019	$ 128,618,055			$ 121,031,295			$ 5,877,521			$ 1,709,239
Balance, Redeemable Units at Dec. 31, 2019	98,059.9845			92,267.0207			4,532.8096			1,260.1542
Net asset value per Redeemable Unit				$ 1,311.75	$ 1,311.75		$ 1,296.66	$ 1,296.66		$ 1,356.37	$ 1,356.37

Organization

Organization	12 Months Ended
	Dec. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization	1. Organization: Ceres Abingdon L.P. (the “Partnership”) is a limited partnership organized on November 8, 2005, under the partnership laws of the State of New York, to engage, directly or indirectly, in the speculative trading of a diversified portfolio of commodity interests including futures, option, swap and forward contracts. The sectors traded include currencies, energy, grains, indices, U.S. and non-U.S. Ceres Managed Futures LLC, a Delaware limited liability company, acts as the general partner (the “General Partner”) and commodity pool operator of the Partnership. The General Partner 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. All trading decisions for the Partnership are made by Winton Capital Management Limited (the “Advisor”). During the periods covered by this report, the Partnership’s and the Master’s commodity broker was Morgan Stanley & Co. LLC (“MS&Co.”), a registered futures commission merchant. JPMorgan Chase Bank, N.A (“JPMorgan”) was also a foreign exchange forward contract counterparty for the Master. During prior periods included in this report, the Partnership/Master deposited a portion of their cash in non-trading On February 1, 2007, the Partnership allocated substantially all of its capital to the Master, a limited partnership organized under the partnership laws of the State of New York, having the same investment objective as the Partnership. The Master permits accounts managed by the Advisor pursuant to Diversified Macro Strategies (formerly, the Winton Futures Program), the Advisor’s proprietary, systematic trading program, to invest together in one trading vehicle. The General Partner is also the general partner of the Master. Individual and pooled accounts currently managed by the Advisor, including the Partnership, are permitted to be limited partners of the Master. The General Partner and the Advisor believe that trading through this master/feeder structure promotes efficiency and economy in the trading process. Expenses to limited partners as a result of the investment in the Master are approximately the same as if the Partnership traded directly, and redemption rights are not affected. The General Partner and the Advisor agreed that the Advisor will trade the Partnership’s assets allocated to the Advisor at a level that is up to 1.5 times the amount of assets allocated. Generally, a limited partner in the Master may withdraw all or part of its capital contribution and undistributed profits, if any, from the Master as of the end of any month (the “Redemption Date”) after a request had been made to the General Partner at least three days in advance of the Redemption Date. Such withdrawals are classified as a liability when the limited partner in the Master elects to redeem and informs the Master. The financial statements of the Master, including the Condensed Schedules of Investments, are attached to this report and should be read together with the Partnership’s financial statements. On April 1, 2011, the Partnership began offering “Class A” Redeemable Units, “Class D” Redeemable Units and “Class Z” Redeemable Units pursuant to the offering memorandum. All Redeemable Units issued prior to April 1, 2011 were deemed Class A Redeemable Units. The rights, liabilities, risks, and fees associated with investment in the Class A Redeemable Units did not change. “Class D” Redeemable Units and “Class Z” Redeemable Units were first issued on April 1, 2011 and August 1, 2011, respectively. Class A Redeemable Units, Class D Redeemable Units and Class Z Redeemable Units will each be referred to as a “Class” and collectively referred to as the “Classes.” The Class of Redeemable Units that a limited partner receives upon a subscription will generally depend upon the amount invested in the Partnership or the status of the limited partner, although the General Partner may determine to offer any Class of Redeemable Units to investors at its discretion. Class A Redeemable Units and Class D Redeemable Units are available to taxable U.S. individuals and institutions, U.S. tax exempt individuals and institutions and non-U.S. Management fees, ongoing selling agent fees, the General Partner fee and incentive fees are charged at the Partnership level. Clearing fees are borne by the Master and allocated to the Partnerships’ limited partners. Professional fees are borne by the Master and allocated to the Partnership. At December 31, 2019 and 2018, the Partnership owned approximately 62.5% and 53.9%, respectively, of the Master. The Partnership intends to continue to invest substantially all of its assets in the Master. The performance of the Partnership is directly affected by the performance of the Master. The Partnership will be liquidated upon the first to occur of the following: December 31, 2025; when the net asset value per Redeemable Unit for any Class decreases to less than $400 as of the close of business on any business day; or under certain circumstances as set forth in the limited partnership agreement of the Partnership, as may be amended and restated from time to time (the “Limited Partnership Agreement”). In addition, the General Partner may, in its sole discretion, cause the Partnership to dissolve if the Partnership’s aggregate net assets decline to less than $1,000,000. 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. The cost of retaining the Administrator is allocated among the pools operated by the General Partner, including the Partnership.

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. e. Master’s Investments. first-in, first-out f. Income Taxes Income Taxes “more-likely-than-not” more-likely-than-not g. Investment Company Status. 2013-08, “Financial Services — Investment Companies (Topic 946): Amendments to the Scope, Measurement and Disclosure Requirements” h Net Income (Loss) per Redeemable 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. The Partnership pays the General Partner a monthly General Partner fee in return for its services to the Partnership equal to 1 12 month-end Month-end b. Management Agreement: The General Partner, on behalf of the Partnership, has entered into a management agreement (the “Management Agreement”) with the Advisor, a registered commodity trading advisor. The Management Agreement provides that the Advisor has sole discretion in determining the investment of the assets of the Partnership allocated to the Advisor by the General Partner. The Partnership is obligated to pay the Advisor a monthly management fee equal to 1 12 month-end Month-end In addition, the Partnership is obligated to pay the Advisor an incentive fee, payable quarterly, equal to 20% of the New Trading Profits, as defined in the Management Agreement, earned by the Advisor for the Partnership during each calendar quarter. The Advisor’s incentive fee will be allocated proportionally to each Class based on the net asset value of the respective Class. The Advisor will not be paid incentive fees until the Advisor recovers the net loss incurred and earns additional new trading profits for the Partnership. The Management Agreement may be terminated upon notice by either party. In allocating substantially all of the assets of the Partnership to the Advisor, the General Partner considers, among other factors, the Advisor’s past performance, trading style, volatility of markets traded and fee requirements. The General Partner may modify or terminate the allocation of assets to the Advisor at any time. c. Customer Agreement: The Partnership has entered into a customer agreement with MS&Co. (the “Partnership Customer Agreement”). Under the Partnership Customer Agreement and the foreign exchange brokerage account agreement (described in Note 4, “Trading Activities”), 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 agent agreement with Morgan Stanley Wealth Management (the “Selling Agreement”). Under the Selling Agreement, the Partnership pays Morgan Stanley Wealth Management a monthly ongoing selling agent fee at a rate equal to (i) 2% per year of month-end month-end Month-end

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 commodity interests, including derivative financial instruments and derivative commodity instruments. The Partnership invests substantially all of its assets through a “master/feeder” structure. The Partnership’s pro-rata The Master has entered into a futures brokerage account agreement (the “Master Customer Agreement” and, together with the Partnership Customer Agreement, the “Customer Agreements”) and a foreign exchange brokerage account agreement with MS&Co. The Customer Agreements and/or foreign exchange brokerage account agreement give the Partnership and the Master, respectively, the legal right to net unrealized gains and losses on open futures and open forward contracts. The Partnership and the Master net, for financial reporting purposes, the unrealized gains and losses on open futures and open forward contracts in the Statements of Financial Condition as the criteria under ASC 210-20, Balance Sheet Trading and transaction fees are based on the number of trades executed by the Advisor for the Master and the Partnership’s percentage ownership of the Master. All clearing fees paid to MS&Co. are borne by the Master and allocated to the Master’s limited partners, including the Partnership. For disclosures regarding the Master’s trading activities, see Note 4, “Trading Activities,” in the attached Master’s financial statements.

Fair Value Measurements

Fair Value Measurements	12 Months Ended
	Dec. 31, 2019
Fair Value Disclosures [Abstract]
Fair Value Measurements	5. Fair Value Measurements: See Note 5 of the Master’s financial statements for the determination of the fair value of the Master’s investments and related disclosures, including the fair value hierarchy, pursuant to ASC 820, “ Fair Value Measurement

Subscriptions, Distributions an

Subscriptions, Distributions and Redemptions	12 Months Ended
	Dec. 31, 2019
Equity [Abstract]
Subscriptions, Distributions and Redemptions	6. 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	7. 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 D Class Z Class A Class D Class Z Class A Class D Class Z Per Redeemable Unit Performance (for a unit outstanding throughout the year):* Net realized and unrealized gains (losses) $ 39.70 $ 37.10 $ 39.24 $ (36.34) $ (35.58) $ (36.53) $ 139.45 $ 133.89 $ 138.27 Net investment loss (40.99) (22.21) (13.63) (44.91) (26.79) (17.78) (55.10) (36.85) (28.66) Increase (decrease) for the year (1.29) 14.89 25.61 (81.25) (62.37) (54.31) 84.35 97.04 109.61 Net asset value per Redeemable Unit, beginning of year 1,313.04 1,281.77 1,330.76 1,394.29 1,344.14 1,385.07 1,309.94 1,247.10 1,275.46 Net asset value per Redeemable Unit, end of year $ 1,311.75 $ 1,296.66 $ 1,356.37 $ 1,313.04 $ 1,281.77 $ 1,330.76 $ 1,394.29 $ 1,344.14 $ 1,385.07 2019 2018 2017 Class A Class D Class Z Class A Class D Class Z Class A Class D Class Z Ratios to Average Limited Partners’ Capital: Net investment loss** (3.1) % (1.8) % (1.0) % (3.3) % (2.0) % (1.3) % (4.3) % (3.0) % (2.5) % Operating expenses 5.0 % 3.9 % 3.2 % 5.0 % 3.7 % 2.9 % 5.0 % 3.7 % 3.3 % Incentive fees - % - % - % - % - % - % - % - % - % Total expenses 5.0 % 3.9 % 3.2 % 5.0 % 3.7 % 2.9 % 5.0 % 3.7 % 3.3 % Total return: Total return before incentive fees (0.1) % 1.2 % 1.9 % (5.8) % (4.6) % (3.9) % 6.4 % 7.8 % 8.6 % Incentive fees - % - % - % - % - % - % - % - % - % Total return after incentive fees (0.1) % 1.2 % 1.9 % (5.8) % (4.6) % (3.9) % 6.4 % 7.8 % 8.6 % * Net investment loss per Redeemable Unit is calculated by dividing the interest income less total expenses by the average number of Redeemable Units outstanding during the year. The net realized and unrealized gains (losses) per Redeemable Unit is a balancing amount necessary to reconcile the change in net asset value per Redeemable Unit with the other per unit information. ** Interest income allocated from the Master 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 class for the Classes using the limited partners’ share of income, expenses and average partners’ capital of the Partnership and include the income and expenses allocated from the Master.

Financial Instrument Risks

Financial Instrument Risks	12 Months Ended
	Dec. 31, 2019
Investments, All Other Investments [Abstract]
Financial Instrument Risks	8. Financial Instrument Risks: In the normal course of business, the Partnership, through its investment in the Master, is party to financial instruments with off-balance over-the-counter See Note 8, “Financial Instrument Risks,” of the attached Master’s financial statements for risks relating to financial instruments and derivatives that are traded by the Master. Market risk is the potential for changes in the value of the financial instruments traded by the Master due to market changes, including interest and foreign exchange rate movements and fluctuations in commodity or security prices. Market risk is directly impacted by the volatility and liquidity in the markets in which the related underlying assets are traded. The Master is exposed to a market risk equal to the value of futures and forward contracts held and unlimited liability on such contracts sold short. Credit risk is the possibility that a loss may occur due to the failure of a counterparty to perform according to the terms of a contract. The Partnership’s and the Master’s risk of loss in the event of a counterparty default is typically limited to the amounts recognized in the Statements of Financial Condition and is not represented by the contract or notional amounts of the instruments. The Partnership’s and the Master’s risk of loss is reduced through the use of legally enforceable master netting agreements with counterparties that permit the Partnership and the Master to offset unrealized gains and losses and other assets and liabilities with such counterparties upon the occurrence of certain events. The Partnership and the Master have credit risk and concentration risk, as MS&Co., an MS&Co. affiliate or JPMorgan are counterparties or brokers with respect to the Partnership’s and the Master’s assets. Credit risk with respect to exchange-traded instruments is reduced to the extent that, through MS&Co. or an MS&Co. affiliate, the Partnership’s and the Master’s counterparty is an exchange or clearing organization. The General Partner monitors and attempts to mitigate the Partnership’s and the Master’s 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 and the Master 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, forward and option contracts by sector, margin requirements, gain and loss transactions and collateral positions. The majority of these financial instruments mature within one year of the inception date. However, due to the nature of the Partnership’s and the Master’s business, these instruments may not be held to maturity. The risk to the limited partners that have purchased Redeemable Units is limited to the amount of their share of the Partnership’s net assets and undistributed profits. This limited liability is a consequence of the organization of the Partnership as a limited partnership under New York law. In the ordinary course of business, the Master enters into contracts and agreements that contain various representations and warranties and which provide general indemnifications. The Master’s maximum exposure under these arrangements cannot be determined, as this could include future claims that have not yet been made against the Master. The General Partner considers 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	9. 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 the 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	Partnership’s Investment.
Master's Investments	Master’s Investments. first-in, first-out
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 Redeemable Unit	Net Income (Loss) per Redeemable Unit. “Financial Services – Investment Companies.”

Financial Highlights (Tables)

Financial Highlights (Tables)	12 Months Ended
	Dec. 31, 2019
Financial Highlights for Limited Partner Classes	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 D Class Z Class A Class D Class Z Class A Class D Class Z Per Redeemable Unit Performance (for a unit outstanding throughout the year):* Net realized and unrealized gains (losses) $ 39.70 $ 37.10 $ 39.24 $ (36.34) $ (35.58) $ (36.53) $ 139.45 $ 133.89 $ 138.27 Net investment loss (40.99) (22.21) (13.63) (44.91) (26.79) (17.78) (55.10) (36.85) (28.66) Increase (decrease) for the year (1.29) 14.89 25.61 (81.25) (62.37) (54.31) 84.35 97.04 109.61 Net asset value per Redeemable Unit, beginning of year 1,313.04 1,281.77 1,330.76 1,394.29 1,344.14 1,385.07 1,309.94 1,247.10 1,275.46 Net asset value per Redeemable Unit, end of year $ 1,311.75 $ 1,296.66 $ 1,356.37 $ 1,313.04 $ 1,281.77 $ 1,330.76 $ 1,394.29 $ 1,344.14 $ 1,385.07 2019 2018 2017 Class A Class D Class Z Class A Class D Class Z Class A Class D Class Z Ratios to Average Limited Partners’ Capital: Net investment loss** (3.1) % (1.8) % (1.0) % (3.3) % (2.0) % (1.3) % (4.3) % (3.0) % (2.5) % Operating expenses 5.0 % 3.9 % 3.2 % 5.0 % 3.7 % 2.9 % 5.0 % 3.7 % 3.3 % Incentive fees - % - % - % - % - % - % - % - % - % Total expenses 5.0 % 3.9 % 3.2 % 5.0 % 3.7 % 2.9 % 5.0 % 3.7 % 3.3 % Total return: Total return before incentive fees (0.1) % 1.2 % 1.9 % (5.8) % (4.6) % (3.9) % 6.4 % 7.8 % 8.6 % Incentive fees - % - % - % - % - % - % - % - % - % Total return after incentive fees (0.1) % 1.2 % 1.9 % (5.8) % (4.6) % (3.9) % 6.4 % 7.8 % 8.6 % * Net investment loss per Redeemable Unit is calculated by dividing the interest income less total expenses by the average number of Redeemable Units outstanding during the year. The net realized and unrealized gains (losses) per Redeemable Unit is a balancing amount necessary to reconcile the change in net asset value per Redeemable Unit with the other per unit information. ** Interest income allocated from the Master less total expenses.

Organization - Additional Infor

Organization - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Maximum amount of partnership assets allocated to trading advisor	1.5 times
Decline in net assets	$ 1,000,000
CMF Winton Master L.P. [Member]
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Percentage of Partnership owned	62.50%	53.90%
Minimum [Member]
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Net asset value per unit liquidation circumstance	$ 400
Partnership liquidation date circumstance	Dec. 31, 2025
Class D [Member]
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Monthly ongoing selling agent fee	0.0625%
Ongoing selling agent fee	0.75%
Class A [Member]
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Monthly ongoing selling agent fee	0.1667%
Ongoing selling agent fee	2.00%

Basis of Presentation and Sum_3

Basis of Presentation and Summary of Significant Accounting Policies - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2019USD ($)
Accounting Policies [Abstract]
Uncertain tax position	$ 0
Open tax year	2016 2017 2018 2019

Agreements - Additional Informa

Agreements - Additional Information (Detail)	Oct. 31, 2017	Dec. 31, 2019
Investment [Line Items]
Percentage of monthly General Partner fee		0.0833%
Percentage of General Partner fee		1.00%
Management fee percentage, Monthly		0.125%
Management fee percentage, Annual		1.50%
Incentive fee, percent		20.00%
Class A [Member]
Investment [Line Items]
Ongoing selling agent fee		2.00%
Class D [Member]
Investment [Line Items]
Ongoing selling agent fee		0.75%
MS&Co. [Member]
Investment [Line Items]
Percentage of allocable shares	80.00%	100.00%
Morgan Stanley Wealth Management [Member] | Class A [Member]
Investment [Line Items]
Ongoing selling agent fee		2.00%
Morgan Stanley Wealth Management [Member] | Class D [Member]
Investment [Line Items]
Ongoing selling agent fee		0.75%
Morgan Stanley Wealth Management [Member] | Class Z [Member]
Investment [Line Items]
Ongoing selling agent fee		0.00%

Subscriptions, Distributions _2

Subscriptions, Distributions and Redemptions - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2019USD ($)
Statement of Partners' Capital [Abstract]
Distribution paid to unit-holders	$ 0
Fee charged to limited partners	$ 0

Financial Highlights - Financia

Financial Highlights - Financial Highlights for Limited Partner Classes (Detail) - $ / shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Class A [Member]
Per Redeemable Unit Performance (for a unit outstanding throughout the year):
Net asset value per Redeemable Unit, beginning of year	$ 1,313.04	$ 1,394.29
Net asset value per Redeemable Unit, end of year	1,311.75	1,313.04	$ 1,394.29
Class A [Member] | Limited Partners [Member]
Per Redeemable Unit Performance (for a unit outstanding throughout the year):
Net realized and unrealized gains (losses)	39.70	(36.34)	139.45
Net investment loss	(40.99)	(44.91)	(55.10)
Increase (decrease) for the year	(1.29)	(81.25)	84.35
Net asset value per Redeemable Unit, beginning of year	1,313.04	1,394.29	1,309.94
Net asset value per Redeemable Unit, end of year	$ 1,311.75	$ 1,313.04	$ 1,394.29
Ratios to Average Limited Partners' Capital:
Net investment income loss	(3.10%)	(3.30%)	(4.30%)
Operating expenses	5.00%	5.00%	5.00%
Incentive fees	0.00%	0.00%	0.00%
Total expenses	5.00%	5.00%	5.00%
Total return:
Total return before incentive fees	(0.10%)	(5.80%)	6.40%
Incentive fees	0.00%	0.00%	0.00%
Total return after incentive fees	(0.10%)	(5.80%)	6.40%
Class D [Member]
Per Redeemable Unit Performance (for a unit outstanding throughout the year):
Net asset value per Redeemable Unit, beginning of year	$ 1,281.77	$ 1,344.14
Net asset value per Redeemable Unit, end of year	1,296.66	1,281.77	$ 1,344.14
Class D [Member] | Limited Partners [Member]
Per Redeemable Unit Performance (for a unit outstanding throughout the year):
Net realized and unrealized gains (losses)	37.10	(35.58)	133.89
Net investment loss	(22.21)	(26.79)	(36.85)
Increase (decrease) for the year	14.89	(62.37)	97.04
Net asset value per Redeemable Unit, beginning of year	1,281.77	1,344.14	1,247.10
Net asset value per Redeemable Unit, end of year	$ 1,296.66	$ 1,281.77	$ 1,344.14
Ratios to Average Limited Partners' Capital:
Net investment income loss	(1.80%)	(2.00%)	(3.00%)
Operating expenses	3.90%	3.70%	3.70%
Incentive fees	0.00%	0.00%	0.00%
Total expenses	3.90%	3.70%	3.70%
Total return:
Total return before incentive fees	1.20%	(4.60%)	7.80%
Incentive fees	0.00%	0.00%	0.00%
Total return after incentive fees	1.20%	(4.60%)	7.80%
Class Z [Member]
Per Redeemable Unit Performance (for a unit outstanding throughout the year):
Net asset value per Redeemable Unit, beginning of year	$ 1,330.76	$ 1,385.07
Net asset value per Redeemable Unit, end of year	1,356.37	1,330.76	$ 1,385.07
Class Z [Member] | Limited Partners [Member]
Per Redeemable Unit Performance (for a unit outstanding throughout the year):
Net realized and unrealized gains (losses)	39.24	(36.53)	138.27
Net investment loss	(13.63)	(17.78)	(28.66)
Increase (decrease) for the year	25.61	(54.31)	109.61
Net asset value per Redeemable Unit, beginning of year	1,330.76	1,385.07	1,275.46
Net asset value per Redeemable Unit, end of year	$ 1,356.37	$ 1,330.76	$ 1,385.07
Ratios to Average Limited Partners' Capital:
Net investment income loss	(1.00%)	(1.30%)	(2.50%)
Operating expenses	3.20%	2.90%	3.30%
Incentive fees	0.00%	0.00%	0.00%
Total expenses	3.20%	2.90%	3.30%
Total return:
Total return before incentive fees	1.90%	(3.90%)	8.60%
Incentive fees	0.00%	0.00%	0.00%
Total return after incentive fees	1.90%	(3.90%)	8.60%

Financial Instrument Risks - Ad

Financial Instrument Risks - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2019
Financial instruments maturity period	1 year