Ceres Abingdon (ABFF) 10-Q 11 May 20 2020 Q1 Quarterly report Financial data

Cover Page

Cover Page - shares	3 Months Ended
	Mar. 31, 2020	Apr. 30, 2020
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2020
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q1
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 Address, State or Province	NY
Class A [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		79,271.3757
Class D [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		4,532.8096
Class Z [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		187.2652

Statements of Financial Conditi

Statements of Financial Condition - USD ($)		Mar. 31, 2020	Dec. 31, 2019
Assets:
Investment in the Master(1) , at fair value	[1]	$ 99,434,279	$ 128,504,409
Redemptions receivable from the Master		10,512,733	1,274,473
Cash at MS&Co.		327,629	340,290
Total assets		110,274,641	130,119,172
Accrued expenses:
Ongoing selling agent fees		175,926	207,853
Management fees		137,325	162,062
General Partner fees		91,550	108,041
Professional fees		238,588	261,695
Redemptions payable to Limited Partners		10,083,308	761,466
Total liabilities		10,726,697	1,501,117
Partners' Capital:
Total partners' capital (net asset value)		99,547,944	128,618,055
Total liabilities and partners' capital		$ 110,274,641	130,119,172
Net asset value per Redeemable Unit		$ 3,689.80
Class A [Member]
Partners' Capital:
Limited Partners		$ 92,928,850	121,031,295
Total partners' capital (net asset value)		$ 92,928,850	$ 121,031,295
Net asset value per Redeemable Unit		$ 1,140.38	$ 1,311.75
Class D [Member]
Partners' Capital:
Limited Partners		$ 5,125,690	$ 5,877,521
Total partners' capital (net asset value)		$ 5,125,690	$ 5,877,521
Net asset value per Redeemable Unit		$ 1,130.80	$ 1,296.66
Class Z [Member]
Partners' Capital:
General Partner		$ 1,271,477	$ 1,455,237
Limited Partners		221,927	254,002
Total partners' capital (net asset value)		$ 1,493,404	$ 1,709,239
Net asset value per Redeemable Unit		$ 1,185.10	$ 1,356.37
[1]	Defined in Note 1.

Statements of Financial Condi_2

Statements of Financial Condition (Parenthetical) - shares	Mar. 31, 2020	Dec. 31, 2019
Class A [Member]
Limited Partners capital, Redeemable Units outstanding	81,489.7247	92,267.0207
Class D [Member]
Limited Partners capital, Redeemable Units outstanding	4,532.8096	4,532.8096
Class Z [Member]
General Partner capital, Redeemable Units outstanding	1,072.8890	1,072.8890
Limited Partners capital, Redeemable Units outstanding	187.2652	187.2652

Statements of Income and Expens

Statements of Income and Expenses - USD ($)		3 Months Ended
		Mar. 31, 2020	Mar. 31, 2019
Investment Income:
Interest income allocated from the Master		$ 332,981	$ 968,047
Expenses:
Expenses allocated from the Master		88,430	57,373
Ongoing selling agent fees		571,623	805,200
Management fees		446,038	668,839
General Partner fees		297,359	445,893
Professional fees		83,914	123,572
Total expenses		1,487,364	2,100,877
Net investment loss		(1,154,383)	(1,132,830)
Net gains (losses) on investment in the Master:
Net realized gains (losses) on closed contracts allocated from the Master		(18,550,738)	(7,142,077)
Net change in unrealized gains (losses) on open contracts allocated from the Master		3,160,971	9,046,250
Total trading results		(15,389,767)	1,904,173
Net income (loss)		(16,544,150)	771,343
Class A [Member]
Net gains (losses) on investment in the Master:
Net income (loss)		$ (15,576,484)	$ 561,827
Net income (loss) per Redeemable Unit	[1]	$ (171.37)	$ 5.90
Weighted average Redeemable Units outstanding		91,303.3837	117,014.6150
Class D [Member]
Net gains (losses) on investment in the Master:
Net income (loss)		$ (751,831)	$ 175,586
Net income (loss) per Redeemable Unit	[1]	$ (165.86)	$ 9.80
Weighted average Redeemable Units outstanding		4,532.8096	17,913.2276
Class Z [Member]
Net gains (losses) on investment in the Master:
Net income (loss)		$ (215,835)	$ 33,930
Net income (loss) per Redeemable Unit	[1]	$ (171.27)	$ 12.69
Weighted average Redeemable Units outstanding		1,260.1542	2,672.3182
[1]	Represents the change in net asset value per Redeemable Unit during the period.

Statements of Changes in Partne

Statements of Changes in Partners' Capital - USD ($)	Total	Limited Partners [Member]	Class A [Member]	Class A [Member]Limited Partners [Member]	Class D [Member]	Class Z [Member]
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
Subscriptions, value		$ 200,000		$ 200,000
Subscriptions, Redeemable Units		156.1940		156.1940
Redemptions, value		$ (9,962,378)		$ (9,962,378)
Redemptions, Redeemable Units		(7,665.7400)		(7,665.7400)
Net income (loss)	$ 771,343		$ 561,827		$ 175,586	$ 33,930
Balance, value at Mar. 31, 2019	$ 174,126,924		$ 147,400,628		$ 23,136,161	$ 3,590,135
Balance, Redeemable Units at Mar. 31, 2019	132,342.5505		111,757.0047		17,913.2276	2,672.3182
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
Redemptions, value		$ (12,525,961)		$ (12,525,961)
Redemptions, Redeemable Units		(10,777.2960)		(10,777.2960)
Net income (loss)	$ (16,544,150)		$ (15,576,484)		$ (751,831)	$ (215,835)
Balance, value at Mar. 31, 2020	$ 99,547,944		$ 92,928,850		$ 5,125,690	$ 1,493,404
Balance, Redeemable Units at Mar. 31, 2020	87,282.6885		81,489.7247		4,532.8096	1,260.1542

Organization

Organization	3 Months Ended
	Mar. 31, 2020
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. As of March 31, 2020, all trading decisions for the Partnership are made by Winton Capital Management Limited (the “Advisor”). During the reporting periods ended March 31, 2020 and 2019, 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. 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. The amount of leverage may be increased or decreased in the future. 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 General Partner is not aware of any material changes to the trading program discussed above during the fiscal quarter ended March 31, 2020. 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 March 31, 2020 and December 31, 2019, the Partnership owned approximately 70.4% and 62.5%, 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 Master’s trading of futures, forward, swap and option contracts, if applicable, on commodities is done primarily on U.S. commodity exchanges and non-U.S. The Master has entered into a foreign exchange brokerage account agreement and a futures brokerage account agreement with MS&Co. The Partnership has also entered into a futures brokerage account agreement with MS&Co. The Partnership, through its investment in the Master, 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, The Partnership has also entered into a selling agreement with Morgan Stanley Wealth Management (as amended, the “Selling Agreement”). Pursuant to the Selling Agreement, Morgan Stanley Wealth Management is paid a monthly ongoing selling agent fee at the rates described above. The ongoing selling agent fee received by Morgan Stanley Wealth Management is shared with the properly registered/exempted financial advisors of Morgan Stanley Wealth Management who sell Class A and/or Class D Redeemable Units. On July 12, 2017, the Master entered into certain agreements with JPMorgan in connection with trading in forward foreign currency contracts on behalf of the Master 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. Under the FX Agreement, JPMorgan charges a fee on the aggregate foreign currency transactions entered into on behalf of the Master during a month. 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	3 Months Ended
	Mar. 31, 2020
Accounting Policies [Abstract]
Basis of Presentation and Summary of Significant Accounting Policies	2. Basis of Presentation and Summary of Significant Accounting Policies: The accompanying financial statements and accompanying notes are unaudited but, in the opinion of the General Partner, include all adjustments, consisting only of normal recurring adjustments, necessary for a fair presentation of the Partnership’s financial condition at March 31, 2020, and the results of its operations and the changes in partners’ capital for the three months ended March 31, 2020 and 2019. These financial statements present the results for interim periods and do not include all disclosures normally provided in annual financial statements. These financial statements should be read together with the financial statements and notes included in the Partnership’s Annual Report on Form 10-K Due to the nature of commodity trading, the results of operations for the interim periods presented should not be considered indicative of the results that may be expected for the entire year. Use of Estimates Profit Allocation Statement of Cash Flows. Statement of Cash Flows.” Partnership’s Investment Master’s Investments first-in, first-out Master’s Cash Income Taxes Income Taxes “more-likely-than-not” more-likely-than-not 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 “Financial Services – Investment Companies.” “ There have been no material changes with respect to the Partnership’s critical accounting policies as reported in the Partnership’s Annual Report on Form 10-K The Master’s Statements of Financial Condition and Condensed Schedules of Investments as of March 31, 2020 and December 31, 2019 and Statements of Income and Expenses and Changes in Partners’ Capital for the three months ended March 31, 2020 and 2019 are presented below: CMF Winton Master L.P. Statements of Financial Condition March 31, 2020 December 31, 2019 Assets: Equity in trading accounts: Unrestricted cash $ 149,902,541 $ 182,012,280 Restricted cash 17,468,285 32,343,512 Net unrealized appreciation on open futures contracts 1,233,844 - Net unrealized appreciation on open forward contracts 444,797 - Total equity in trading accounts 169,049,467 214,355,792 Total assets $ 169,049,467 $ 214,355,792 Liabilities and Partners’ Capital: Liabilities: Net unrealized depreciation on open futures contracts $ - $ 869,229 Net unrealized depreciation on open forward contracts - 2,050,966 Accrued expenses: Professional fees 66,180 59,679 Redemptions payable 27,747,627 5,973,309 Total liabilities 27,813,807 8,953,183 Partners’ Capital: General Partner, 0.0000 Redeemable Units outstanding at March 31, 2020 and December 31, 2019 - - Limited Partners, 38,277.3364 and 48,847.3360 Redeemable Units outstanding at March 31, 2020 and December 31, 2019, respectively 141,235,660 205,402,609 Total partners’ capital (net asset value) 141,235,660 205,402,609 Total liabilities and partners’ capital $ 169,049,467 $ 214,355,792 Net asset value per Redeemable Unit $ 3,689.80 $ 4,204.99 CMF Winton Master L.P. Condensed Schedule of Investments March 31, 2020 (Unaudited) Notional ($)/ Fair Value % of Partners’ Capital Futures Contracts Purchased Currencies 277 $ (357,540) (0.25) % Grains 4 517 0.00 * Indices 32 157,200 0.11 Interest Rates U.S. 143 1,124,374 0.80 Interest Rates Non-U.S. 1,384 (117,809) (0.09) Metals 113 (80,262) (0.06) Softs 169 (424,537) (0.30) Total futures contracts purchased 301,943 0.21 Futures Contracts Sold Currencies 672 590,843 0.42 Energy 454 1,155,646 0.82 Grains 663 (320,691) (0.24) Indices 216 (414,297) (0.29) Interest Rates U.S. 54 (194,117) (0.14) Interest Rates Non-U.S. 355 (102,765) (0.07) Livestock 220 256,720 0.18 Metals 128 (360,020) (0.25) Softs 356 320,582 0.23 Total futures contracts sold 931,901 0.66 Net unrealized appreciation on open futures contracts $ 1,233,844 0.87 % Unrealized Appreciation on Open Forward Contracts Currencies $ 53,810,316 $ 2,015,890 1.43 % Metals 1,150 8,517,270 6.03 Total unrealized appreciation on open forward contracts 10,533,160 7.46 Unrealized Depreciation on Open Forward Contracts Currencies $ 102,724,644 (3,982,883) (2.83) Metals 613 (6,105,480) (4.32) Total unrealized depreciation on open forward contracts (10,088,363) (7.15) Net unrealized appreciation on open forward contracts $ 444,797 0.31 % * Due to rounding. CMF Winton Master L.P. Condensed Schedule of Investments December 31, 2019 Notional ($)/ Fair Value % of Partners’ Capital Futures Contracts Purchased Currencies 1,026 $ 816,084 0.40 % Energy 546 499,579 0.24 Grains 202 245,197 0.12 Indices 1,457 743,917 0.36 Interest Rates U.S. 452 (1,147,946) (0.56) Interest Rates Non-U.S. 1,986 (1,180,458) (0.57) Livestock 7 1,107 0.00 * Metals 795 2,077,798 1.01 Softs 325 (242,815) (0.12) Total futures contracts purchased 1,812,463 0.88 Futures Contracts Sold Currencies 1,365 (1,740,121) (0.85) Energy 759 978,732 0.48 Grains 859 (1,131,908) (0.55) Indices 292 (217,870) (0.11) Interest Rates U.S. 616 127,032 0.06 Interest Rates Non-U.S. 551 30,449 0.01 Livestock 48 (63,920) (0.03) Softs 465 (664,086) (0.31) Total futures contracts sold (2,681,692) (1.30) Net unrealized depreciation on open futures contracts $ (869,229) (0.42) % Unrealized Appreciation on Open Forward Contracts Currencies $ 83,027,986 $ 1,138,504 0.55 % Metals 430 1,781,416 0.87 Total unrealized appreciation on open forward contracts 2,919,920 1.42 Unrealized Depreciation on Open Forward Contracts Currencies $ 42,818,809 (710,829) (0.35) Metals 902 (4,260,057) (2.07) Total unrealized depreciation on open forward contracts (4,970,886) (2.42) Net unrealized depreciation on open forward contracts $ (2,050,966) (1.00) % * Due to rounding. CMF Winton Master L.P. Statements of Income and Expenses and Changes in Partners’ Capital (Unaudited) Three Months Ended March 31, 2020 2019 Investment Income: Interest income $ 526,273 $ 1,770,886 Expenses: Clearing fees 117,667 89,282 Professional fees 21,000 15,750 Total expenses 138,667 105,032 Net investment income (loss) 387,606 1,665,854 Trading Results: Net gains (losses) on trading of commodity interests: Net realized gains (losses) on closed contracts (28,591,076 ) (13,387,345 ) Net change in unrealized gains (losses) on open contracts 4,637,288 16,624,678 Total trading results (23,953,788 ) 3,237,333 Net income (loss) (23,566,182 ) 4,903,187 Subscriptions - Limited Partners - 932,964 Redemptions - Limited Partners (40,111,052 ) (34,865,572 ) Distribution of interest income to feeder funds (489,715 ) (1,718,739 ) Net increase (decrease) in Partners’ Capital (64,166,949 ) (30,748,160 ) Partners’ Capital, beginning of period 205,402,609 339,199,614 Partners’ Capital, end of period $ 141,235,660 $ 308,451,454 Net asset value per Redeemable Unit (38,277.3364 and 74,682.3046 Redeemable Units outstanding at March 31, 2020 and 2019, respectively) $ 3,689.80 $ 4,130.18 Net income (loss) per Redeemable Unit* $ (504.86 ) $ 67.27 Weighted average Redeemable Units outstanding 47,391.1239 80,663.7625 * Represents the change in net asset value per Redeemable Unit during the period before distribution of interest income to feeder funds.

Financial Highlights

Financial Highlights	3 Months Ended
	Mar. 31, 2020
Investment Company [Abstract]
Financial Highlights	3. Financial Highlights: Financial highlights for the limited partner classes as a whole for the three months ended March 31, 2020 and 2019 were as follows: Three Months Ended March 31, 2020 2019 Per Redeemable Unit Performance (for a unit outstanding throughout the period):* Class A Class D Class Z Class A Class D Class Z Net realized and unrealized gains (losses) $ (159.22) $ (157.63) $ (165.03) $ 14.80 $ 14.53 $ 15.13 Net investment loss (12.15) (8.23) (6.24) (8.90) (4.73) (2.44) Increase (decrease) for the period (171.37) (165.86) (171.27) 5.90 9.80 12.69 Net asset value per Redeemable Unit, beginning of period 1,311.75 1,296.66 1,356.37 1,313.04 1,281.77 1,330.76 Net asset value per Redeemable Unit, end of period $ 1,140.38 $ 1,130.80 $ 1,185.10 $ 1,318.94 $ 1,291.57 $ 1,343.45 Three Months Ended March 31, 2020 2019 Class A Class D Class Z Class A Class D Class Z Ratios to Average Limited Partners’ Capital:** Net investment loss*** (4.0) % (2.7) % (1.9) % (2.8) % (1.5) % (0.7) % Operating expenses 5.2 % 3.8 % 3.0 % 5.0 % 3.7 % 2.9 % Incentive fees - % - % - % - % - % - % Total expenses 5.2 % 3.8 % 3.0 % 5.0 % 3.7 % 2.9 % Total return: Total return before incentive fees (13.1) % (12.8) % (12.6) % 0.4 % 0.8 % 1.0 % Incentive fees - % - % - % - % - % - % Total return after incentive fees (13.1) % (12.8) % (12.6) % 0.4 % 0.8 % 1.0 % * 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 period. 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. ** Annualized (except for incentive fees). *** 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 period. 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 Highlights of the Master: Three Months Ended March 31, 2020 2019 Per Redeemable Unit Performance (for a unit outstanding throughout the period):* Net realized and unrealized gains (losses) $ (513.04) $ 46.62 Net investment income (loss) 8.18 20.65 Increase (decrease) for the period (504.86) 67.27 Distribution of interest income to feeder funds (10.33) (21.31) Net asset value per Redeemable Unit, beginning of period 4,204.99 4,084.22 Net asset value per Redeemable Unit, end of period $ 3,689.80 $ 4,130.18 Three Months Ended March 31, 2020 2019 Ratios to Average Limited Partners’ Capital:** Net investment income (loss)*** 0.8 % 2.1 % Operating expenses 0.3 % 0.1 % Total return (12.0) % 1.6 % * Net investment income (loss) per Redeemable Unit is calculated by dividing the interest income less total expenses by the average number of Redeemable Units outstanding during the period. 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. ** Annualized. *** 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 period. Additionally, these ratios are calculated for the limited partner class using the limited partners’ share of income, expenses and average partners’ capital.

Trading Activities

Trading Activities	3 Months Ended
	Mar. 31, 2020
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 futures brokerage account agreements with MS&Co. give the Partnership and the Master, respectively, the legal right to net unrealized gains and losses on open futures and open forward contracts. The Master nets, 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. All of the commodity interests owned by the Master are held for trading purposes. The monthly average number of futures contracts traded by the Master during the three months ended March 31, 2020 and 2019 was 9,436 and 15,907, respectively. The monthly average number of metals forward contracts traded by the Master during the three months ended March 31, 2020 and 2019 was 1,548 and 1,645, respectively. The monthly average notional value of currency forward contracts traded by the Master during the three months ended March 31, 2020 and 2019 was $145,771,349 and $197,176,705, respectively. The following tables summarize the gross and net amounts recognized relating to assets and liabilities of the Master’s derivatives and their offsetting subject to master netting agreements or similar arrangements as of March 31, 2020 and December 31, 2019, respectively. Gross Amounts Amounts Gross Amounts Not Offset in the Offset in the Presented in the Statements of Financial Condition Statements of Statements of Cash Collateral Gross Amounts Financial Financial Financial Received/ Net March 31, 2020 Recognized Condition Condition Instruments Pledged* Amount Assets MS&Co. Futures $ 5,734,172 $ (4,500,328) $ 1,233,844 $ - $ - $ 1,233,844 Forwards 8,517,270 (6,105,480) 2,411,790 - - 2,411,790 14,251,442 (10,605,808) 3,645,634 - - 3,645,634 JPMorgan Forwards 2,015,890 (2,015,890) - - - - Total assets $ 16,267,332 $ (12,621,698) $ 3,645,634 $ - $ - $ 3,645,634 Liabilities MS&Co. Futures $ (4,500,328) $ 4,500,328 $ - $ - $ - $ - Forwards (6,105,480) 6,105,480 - - - - (10,605,808) 10,605,808 - - - - JPMorgan Forwards (3,982,883) 2,015,890 (1,966,993) - 1,966,993 - Total liabilities $ (14,588,691) $ 12,621,698 $ (1,966,993) $ - $ 1,966,993 $ - Net fair value $ 3,645,634 * Gross Amounts Amounts Gross Amounts Not Offset in the Offset in the Presented in the Statements of Financial Condition Statements of Statements of Cash Collateral Gross Amounts Financial Financial Financial Received/ Net December 31, 2019 Recognized Condition Condition Instruments Pledged* Amount Assets MS&Co. Futures $ 6,198,249 $ (6,198,249) $ - $ - $ - $ - Forwards 1,781,416 (1,781,416) - - - - 7,979,665 (7,979,665) - - - - JPMorgan Forwards 1,138,504 (710,829) 427,675 - - 427,675 Total assets $ 9,118,169 $ (8,690,494) $ 427,675 $ - $ - $ 427,675 Liabilities MS&Co. Futures $ (7,067,478) $ 6,198,249 $ (869,229) $ - $ 869,229 $ - Forwards (4,260,057) 1,781,416 (2,478,641) - 2,478,641 - (11,327,535) 7,979,665 (3,347,870) - 3,347,870 - JPMorgan Forwards (710,829) 710,829 - - - - Total liabilities $ (12,038,364) $ 8,690,494 $ (3,347,870) $ - $ 3,347,870 $ - Net fair value $ 427,675 * * In the event of default by the Master, MS&Co., the Master’s commodity futures broker and a counterparty to certain of the Master’s non-exchange-traded non-exchange-traded The Master has netting agreements with both MS&Co. and JPMorgan. The “Net unrealized appreciation on open forward contracts” and “Net unrealized depreciation on open forward contracts” as presented on the Statements of Financial Condition, as applicable, is the net of the amounts presented in the tables above for MS&Co. and JPMorgan. The following tables indicate the gross fair values of the Master’s derivative instruments of futures and forward contracts as separate assets and liabilities as of March 31, 2020 and December 31, 2019, respectively. March 31, 2020 Assets Futures Contracts Currencies $ 1,315,677 Energy 1,222,420 Grains 201,404 Indices 168,228 Interest Rates U.S. 1,124,405 Interest Rates Non-U.S. 592,698 Livestock 398,408 Metals 155,265 Softs 555,667 Total unrealized appreciation on open futures contracts 5,734,172 Liabilities Futures Contracts Currencies (1,082,374 ) Energy (66,774 ) Grains (521,578 ) Indices (425,325 ) Interest Rates U.S. (194,148 ) Interest Rates Non-U.S. (813,272 ) Livestock (141,688 ) Metals (595,547 ) Softs (659,622 ) Total unrealized depreciation on open futures contracts (4,500,328 ) Net unrealized appreciation on open futures contracts $ 1,233,844 * Assets Forward Contracts Currencies $ 2,015,890 Metals 8,517,270 Total unrealized appreciation on open forward contracts 10,533,160 Liabilities Forward Contracts Currencies (3,982,883 ) Metals (6,105,480 ) Total unrealized depreciation on open forward contracts (10,088,363 ) Net unrealized appreciation on open forward contracts $ 444,797 ** * This amount is in “Net unrealized appreciation on open futures contracts” in the Master’s Statements of Financial Condition. ** This amount is in “Net unrealized appreciation on open forward contracts” in the Master’s Statements of Financial Condition. December 31, 2019 Assets Futures Contracts Currencies $ 882,389 Energy 1,610,681 Grains 248,161 Indices 1,039,584 Interest Rates U.S. 133,188 Interest Rates Non-U.S. 119,694 Livestock 2,270 Metals 2,107,650 Softs 54,632 Total unrealized appreciation on open futures contracts 6,198,249 Liabilities Futures Contracts Currencies (1,806,426 ) Energy (132,370 ) Grains (1,134,872 ) Indices (513,537 ) Interest Rates U.S. (1,154,102 ) Interest Rates Non-U.S. (1,269,703 ) Livestock (65,083 ) Metals (29,852 ) Softs (961,533 ) Total unrealized depreciation on open futures contracts (7,067,478 ) Net unrealized depreciation on open futures contracts $ (869,229 ) * Assets Forward Contracts Currencies $ 1,138,504 Metals 1,781,416 Total unrealized appreciation on open forward contracts 2,919,920 Liabilities Forward Contracts Currencies (710,829 ) Metals (4,260,057 ) Total unrealized depreciation on open forward contracts (4,970,886 ) Net unrealized depreciation on open forward contracts $ (2,050,966 ) ** * This amount is in “Net unrealized depreciation on open futures contracts” in the Master’s Statements of Financial Condition. ** This amount is in “Net unrealized depreciation on open forward contracts” in the Master’s Statements of Financial Condition. The following table indicates the Master’s total trading gains and losses, by market sector, on derivative instruments for the three months ended March 31, 2020 and 2019, respectively. Three Months Ended March 31, 2020 2019 Sector Currencies $ (6,706,169 ) $ 1,028,205 Energy (3,803,142 ) (6,833,697 ) Grains 493,619 3,420,567 Indices (17,414,130 ) 3,567,356 Interest Rates U.S. 3,986,866 237,116 Interest Rates Non-U.S. (736,133 ) 3,319,930 Livestock 1,236,615 (983,460 ) Metals 1,055,222 (1,176,605 ) Softs (2,066,536 ) 657,921 Total $ (23,953,788 ) *** $ 3,237,333 *** *** This amount is in “Total trading results” in the Master’s Statements of Income and Expenses and Changes in Partners’ Capital.

Fair Value Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2020
Fair Value Disclosures [Abstract]
Fair Value Measurements	5. Fair Value Measurements: Master’s Fair Value Measurements The fair value of exchange-traded futures 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 Master considers prices for commodity futures 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 and non-exchange-traded March 31, 2020 Total Level 1 Level 2 Level 3 Assets Futures $ 5,734,172 $ 5,734,172 $ - $ - Forwards 10,533,160 - 10,533,160 - Total assets $ 16,267,332 $ 5,734,172 $ 10,533,160 $ - Liabilities Futures $ 4,500,328 $ 4,500,328 $ - $ - Forwards 10,088,363 - 10,088,363 - Total liabilities $ 14,588,691 $ 4,500,328 $ 10,088,363 $ - December 31, 2019 Total Level 1 Level 2 Level 3 Assets Futures $ 6,198,249 $ 6,198,249 $ - $ - Forwards 2,919,920 - 2,919,920 - Total assets $ 9,118,169 $ 6,198,249 $ 2,919,920 $ - Liabilities Futures $ 7,067,478 $ 7,067,478 $ - $ - Forwards 4,970,886 - 4,970,886 - Total liabilities $ 12,038,364 $ 7,067,478 $ 4,970,886 $ -

Financial Instrument Risks

Financial Instrument Risks	3 Months Ended
	Mar. 31, 2020
Investments, All Other Investments [Abstract]
Financial Instrument Risks	6. 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 Futures Contracts Forward Foreign Currency Contracts London Metal Exchange Forward Contracts 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 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/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/Master’s risk of loss is reduced through the use of legally enforceable master netting agreements with counterparties that permit the Partnership/Master to offset unrealized gains and losses and other assets and liabilities with such counterparties upon the occurrence of certain events. The Partnership/Master has credit risk and concentration risk, as MS&Co., MS&Co. affiliates and/or JPMorgan are or were counterparties or brokers with respect to the Partnership’s/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/Master’s counterparty is an exchange or clearing organization. The General Partner monitors and attempts to mitigate the Partnership’s/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/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 and forward contracts by sector, margin requirements, gain and loss transactions and collateral positions. 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. The majority of these financial instruments mature within one year of the inception date. However, due to the nature of the Partnership’s/Master’s business, these instruments may not be held to maturity. 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	3 Months Ended
	Mar. 31, 2020
Subsequent Events [Abstract]
Subsequent Events	7. 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)	3 Months Ended
	Mar. 31, 2020
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 Master’s Cash
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.” “

Basis of Presentation and Sum_3

Basis of Presentation and Summary of Significant Accounting Policies (Tables) - CMF Winton Master L.P. [Member]	3 Months Ended
	Mar. 31, 2020
Statements of Financial Condition	CMF Winton Master L.P. Statements of Financial Condition March 31, 2020 December 31, 2019 Assets: Equity in trading accounts: Unrestricted cash $ 149,902,541 $ 182,012,280 Restricted cash 17,468,285 32,343,512 Net unrealized appreciation on open futures contracts 1,233,844 - Net unrealized appreciation on open forward contracts 444,797 - Total equity in trading accounts 169,049,467 214,355,792 Total assets $ 169,049,467 $ 214,355,792 Liabilities and Partners’ Capital: Liabilities: Net unrealized depreciation on open futures contracts $ - $ 869,229 Net unrealized depreciation on open forward contracts - 2,050,966 Accrued expenses: Professional fees 66,180 59,679 Redemptions payable 27,747,627 5,973,309 Total liabilities 27,813,807 8,953,183 Partners’ Capital: General Partner, 0.0000 Redeemable Units outstanding at March 31, 2020 and December 31, 2019 - - Limited Partners, 38,277.3364 and 48,847.3360 Redeemable Units outstanding at March 31, 2020 and December 31, 2019, respectively 141,235,660 205,402,609 Total partners’ capital (net asset value) 141,235,660 205,402,609 Total liabilities and partners’ capital $ 169,049,467 $ 214,355,792 Net asset value per Redeemable Unit $ 3,689.80 $ 4,204.99
Condensed Schedule of Investments	CMF Winton Master L.P. Condensed Schedule of Investments March 31, 2020 (Unaudited) Notional ($)/ Fair Value % of Partners’ Capital Futures Contracts Purchased Currencies 277 $ (357,540) (0.25) % Grains 4 517 0.00 * Indices 32 157,200 0.11 Interest Rates U.S. 143 1,124,374 0.80 Interest Rates Non-U.S. 1,384 (117,809) (0.09) Metals 113 (80,262) (0.06) Softs 169 (424,537) (0.30) Total futures contracts purchased 301,943 0.21 Futures Contracts Sold Currencies 672 590,843 0.42 Energy 454 1,155,646 0.82 Grains 663 (320,691) (0.24) Indices 216 (414,297) (0.29) Interest Rates U.S. 54 (194,117) (0.14) Interest Rates Non-U.S. 355 (102,765) (0.07) Livestock 220 256,720 0.18 Metals 128 (360,020) (0.25) Softs 356 320,582 0.23 Total futures contracts sold 931,901 0.66 Net unrealized appreciation on open futures contracts $ 1,233,844 0.87 % Unrealized Appreciation on Open Forward Contracts Currencies $ 53,810,316 $ 2,015,890 1.43 % Metals 1,150 8,517,270 6.03 Total unrealized appreciation on open forward contracts 10,533,160 7.46 Unrealized Depreciation on Open Forward Contracts Currencies $ 102,724,644 (3,982,883) (2.83) Metals 613 (6,105,480) (4.32) Total unrealized depreciation on open forward contracts (10,088,363) (7.15) Net unrealized appreciation on open forward contracts $ 444,797 0.31 % * Due to rounding. CMF Winton Master L.P. Condensed Schedule of Investments December 31, 2019 Notional ($)/ Fair Value % of Partners’ Capital Futures Contracts Purchased Currencies 1,026 $ 816,084 0.40 % Energy 546 499,579 0.24 Grains 202 245,197 0.12 Indices 1,457 743,917 0.36 Interest Rates U.S. 452 (1,147,946) (0.56) Interest Rates Non-U.S. 1,986 (1,180,458) (0.57) Livestock 7 1,107 0.00 * Metals 795 2,077,798 1.01 Softs 325 (242,815) (0.12) Total futures contracts purchased 1,812,463 0.88 Futures Contracts Sold Currencies 1,365 (1,740,121) (0.85) Energy 759 978,732 0.48 Grains 859 (1,131,908) (0.55) Indices 292 (217,870) (0.11) Interest Rates U.S. 616 127,032 0.06 Interest Rates Non-U.S. 551 30,449 0.01 Livestock 48 (63,920) (0.03) Softs 465 (664,086) (0.31) Total futures contracts sold (2,681,692) (1.30) Net unrealized depreciation on open futures contracts $ (869,229) (0.42) % Unrealized Appreciation on Open Forward Contracts Currencies $ 83,027,986 $ 1,138,504 0.55 % Metals 430 1,781,416 0.87 Total unrealized appreciation on open forward contracts 2,919,920 1.42 Unrealized Depreciation on Open Forward Contracts Currencies $ 42,818,809 (710,829) (0.35) Metals 902 (4,260,057) (2.07) Total unrealized depreciation on open forward contracts (4,970,886) (2.42) Net unrealized depreciation on open forward contracts $ (2,050,966) (1.00) %
Statements of Income and Expenses and Changes in Partners' Capital	CMF Winton Master L.P. Statements of Income and Expenses and Changes in Partners’ Capital (Unaudited) Three Months Ended March 31, 2020 2019 Investment Income: Interest income $ 526,273 $ 1,770,886 Expenses: Clearing fees 117,667 89,282 Professional fees 21,000 15,750 Total expenses 138,667 105,032 Net investment income (loss) 387,606 1,665,854 Trading Results: Net gains (losses) on trading of commodity interests: Net realized gains (losses) on closed contracts (28,591,076 ) (13,387,345 ) Net change in unrealized gains (losses) on open contracts 4,637,288 16,624,678 Total trading results (23,953,788 ) 3,237,333 Net income (loss) (23,566,182 ) 4,903,187 Subscriptions - Limited Partners - 932,964 Redemptions - Limited Partners (40,111,052 ) (34,865,572 ) Distribution of interest income to feeder funds (489,715 ) (1,718,739 ) Net increase (decrease) in Partners’ Capital (64,166,949 ) (30,748,160 ) Partners’ Capital, beginning of period 205,402,609 339,199,614 Partners’ Capital, end of period $ 141,235,660 $ 308,451,454 Net asset value per Redeemable Unit (38,277.3364 and 74,682.3046 Redeemable Units outstanding at March 31, 2020 and 2019, respectively) $ 3,689.80 $ 4,130.18 Net income (loss) per Redeemable Unit* $ (504.86 ) $ 67.27 Weighted average Redeemable Units outstanding 47,391.1239 80,663.7625 * Represents the change in net asset value per Redeemable Unit during the period before distribution of interest income to feeder funds.

Financial Highlights (Tables)

Financial Highlights (Tables)	3 Months Ended
	Mar. 31, 2020
Financial Highlights	Financial highlights for the limited partner classes as a whole for the three months ended March 31, 2020 and 2019 were as follows: Three Months Ended March 31, 2020 2019 Per Redeemable Unit Performance (for a unit outstanding throughout the period):* Class A Class D Class Z Class A Class D Class Z Net realized and unrealized gains (losses) $ (159.22) $ (157.63) $ (165.03) $ 14.80 $ 14.53 $ 15.13 Net investment loss (12.15) (8.23) (6.24) (8.90) (4.73) (2.44) Increase (decrease) for the period (171.37) (165.86) (171.27) 5.90 9.80 12.69 Net asset value per Redeemable Unit, beginning of period 1,311.75 1,296.66 1,356.37 1,313.04 1,281.77 1,330.76 Net asset value per Redeemable Unit, end of period $ 1,140.38 $ 1,130.80 $ 1,185.10 $ 1,318.94 $ 1,291.57 $ 1,343.45 Three Months Ended March 31, 2020 2019 Class A Class D Class Z Class A Class D Class Z Ratios to Average Limited Partners’ Capital:** Net investment loss*** (4.0) % (2.7) % (1.9) % (2.8) % (1.5) % (0.7) % Operating expenses 5.2 % 3.8 % 3.0 % 5.0 % 3.7 % 2.9 % Incentive fees - % - % - % - % - % - % Total expenses 5.2 % 3.8 % 3.0 % 5.0 % 3.7 % 2.9 % Total return: Total return before incentive fees (13.1) % (12.8) % (12.6) % 0.4 % 0.8 % 1.0 % Incentive fees - % - % - % - % - % - % Total return after incentive fees (13.1) % (12.8) % (12.6) % 0.4 % 0.8 % 1.0 % * 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 period. 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. ** Annualized (except for incentive fees). *** Interest income allocated from the Master less total expenses.
CMF Winton Master L.P. [Member]
Financial Highlights	The above ratios and total return may vary for individual investors based on the timing of capital transactions during the period. 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 Highlights of the Master: Three Months Ended March 31, 2020 2019 Per Redeemable Unit Performance (for a unit outstanding throughout the period):* Net realized and unrealized gains (losses) $ (513.04) $ 46.62 Net investment income (loss) 8.18 20.65 Increase (decrease) for the period (504.86) 67.27 Distribution of interest income to feeder funds (10.33) (21.31) Net asset value per Redeemable Unit, beginning of period 4,204.99 4,084.22 Net asset value per Redeemable Unit, end of period $ 3,689.80 $ 4,130.18 Three Months Ended March 31, 2020 2019 Ratios to Average Limited Partners’ Capital:** Net investment income (loss)*** 0.8 % 2.1 % Operating expenses 0.3 % 0.1 % Total return (12.0) % 1.6 % * Net investment income (loss) per Redeemable Unit is calculated by dividing the interest income less total expenses by the average number of Redeemable Units outstanding during the period. 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. ** Annualized. *** Interest income less total expenses.

Trading Activities (Tables)

Trading Activities (Tables) - CMF Winton Master L.P. [Member]	3 Months Ended
	Mar. 31, 2020
Summary of Valuation of Master's Investments	The following tables summarize the gross and net amounts recognized relating to assets and liabilities of the Master’s derivatives and their offsetting subject to master netting agreements or similar arrangements as of March 31, 2020 and December 31, 2019, respectively. Gross Amounts Amounts Gross Amounts Not Offset in the Offset in the Presented in the Statements of Financial Condition Statements of Statements of Cash Collateral Gross Amounts Financial Financial Financial Received/ Net March 31, 2020 Recognized Condition Condition Instruments Pledged* Amount Assets MS&Co. Futures $ 5,734,172 $ (4,500,328) $ 1,233,844 $ - $ - $ 1,233,844 Forwards 8,517,270 (6,105,480) 2,411,790 - - 2,411,790 14,251,442 (10,605,808) 3,645,634 - - 3,645,634 JPMorgan Forwards 2,015,890 (2,015,890) - - - - Total assets $ 16,267,332 $ (12,621,698) $ 3,645,634 $ - $ - $ 3,645,634 Liabilities MS&Co. Futures $ (4,500,328) $ 4,500,328 $ - $ - $ - $ - Forwards (6,105,480) 6,105,480 - - - - (10,605,808) 10,605,808 - - - - JPMorgan Forwards (3,982,883) 2,015,890 (1,966,993) - 1,966,993 - Total liabilities $ (14,588,691) $ 12,621,698 $ (1,966,993) $ - $ 1,966,993 $ - Net fair value $ 3,645,634 * Gross Amounts Amounts Gross Amounts Not Offset in the Offset in the Presented in the Statements of Financial Condition Statements of Statements of Cash Collateral Gross Amounts Financial Financial Financial Received/ Net December 31, 2019 Recognized Condition Condition Instruments Pledged* Amount Assets MS&Co. Futures $ 6,198,249 $ (6,198,249) $ - $ - $ - $ - Forwards 1,781,416 (1,781,416) - - - - 7,979,665 (7,979,665) - - - - JPMorgan Forwards 1,138,504 (710,829) 427,675 - - 427,675 Total assets $ 9,118,169 $ (8,690,494) $ 427,675 $ - $ - $ 427,675 Liabilities MS&Co. Futures $ (7,067,478) $ 6,198,249 $ (869,229) $ - $ 869,229 $ - Forwards (4,260,057) 1,781,416 (2,478,641) - 2,478,641 - (11,327,535) 7,979,665 (3,347,870) - 3,347,870 - JPMorgan Forwards (710,829) 710,829 - - - - Total liabilities $ (12,038,364) $ 8,690,494 $ (3,347,870) $ - $ 3,347,870 $ - Net fair value $ 427,675 * * In the event of default by the Master, MS&Co., the Master’s commodity futures broker and a counterparty to certain of the Master’s non-exchange-traded non-exchange-traded
Gross Fair Values of Master's Derivative Instruments of Futures and Forward Contracts as Separate Assets and Liabilities	The following tables indicate the gross fair values of the Master’s derivative instruments of futures and forward contracts as separate assets and liabilities as of March 31, 2020 and December 31, 2019, respectively. March 31, 2020 Assets Futures Contracts Currencies $ 1,315,677 Energy 1,222,420 Grains 201,404 Indices 168,228 Interest Rates U.S. 1,124,405 Interest Rates Non-U.S. 592,698 Livestock 398,408 Metals 155,265 Softs 555,667 Total unrealized appreciation on open futures contracts 5,734,172 Liabilities Futures Contracts Currencies (1,082,374 ) Energy (66,774 ) Grains (521,578 ) Indices (425,325 ) Interest Rates U.S. (194,148 ) Interest Rates Non-U.S. (813,272 ) Livestock (141,688 ) Metals (595,547 ) Softs (659,622 ) Total unrealized depreciation on open futures contracts (4,500,328 ) Net unrealized appreciation on open futures contracts $ 1,233,844 * Assets Forward Contracts Currencies $ 2,015,890 Metals 8,517,270 Total unrealized appreciation on open forward contracts 10,533,160 Liabilities Forward Contracts Currencies (3,982,883 ) Metals (6,105,480 ) Total unrealized depreciation on open forward contracts (10,088,363 ) Net unrealized appreciation on open forward contracts $ 444,797 ** * This amount is in “Net unrealized appreciation on open futures contracts” in the Master’s Statements of Financial Condition. ** This amount is in “Net unrealized appreciation on open forward contracts” in the Master’s Statements of Financial Condition. December 31, 2019 Assets Futures Contracts Currencies $ 882,389 Energy 1,610,681 Grains 248,161 Indices 1,039,584 Interest Rates U.S. 133,188 Interest Rates Non-U.S. 119,694 Livestock 2,270 Metals 2,107,650 Softs 54,632 Total unrealized appreciation on open futures contracts 6,198,249 Liabilities Futures Contracts Currencies (1,806,426 ) Energy (132,370 ) Grains (1,134,872 ) Indices (513,537 ) Interest Rates U.S. (1,154,102 ) Interest Rates Non-U.S. (1,269,703 ) Livestock (65,083 ) Metals (29,852 ) Softs (961,533 ) Total unrealized depreciation on open futures contracts (7,067,478 ) Net unrealized depreciation on open futures contracts $ (869,229 ) * Assets Forward Contracts Currencies $ 1,138,504 Metals 1,781,416 Total unrealized appreciation on open forward contracts 2,919,920 Liabilities Forward Contracts Currencies (710,829 ) Metals (4,260,057 ) Total unrealized depreciation on open forward contracts (4,970,886 ) Net unrealized depreciation on open forward contracts $ (2,050,966 ) ** * This amount is in “Net unrealized depreciation on open futures contracts” in the Master’s Statements of Financial Condition. ** This amount is in “Net unrealized depreciation on open forward contracts” in the Master’s Statements of Financial Condition.
Master's Trading Gains and Losses, by Market Sector, on Derivative Instruments	The following table indicates the Master’s total trading gains and losses, by market sector, on derivative instruments for the three months ended March 31, 2020 and 2019, respectively. Three Months Ended March 31, 2020 2019 Sector Currencies $ (6,706,169 ) $ 1,028,205 Energy (3,803,142 ) (6,833,697 ) Grains 493,619 3,420,567 Indices (17,414,130 ) 3,567,356 Interest Rates U.S. 3,986,866 237,116 Interest Rates Non-U.S. (736,133 ) 3,319,930 Livestock 1,236,615 (983,460 ) Metals 1,055,222 (1,176,605 ) Softs (2,066,536 ) 657,921 Total $ (23,953,788 ) *** $ 3,237,333 *** *** This amount is in “Total trading results” in the Master’s Statements of Income and Expenses and Changes in Partners’ Capital.

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2020
CMF Winton Master L.P. [Member]
Master's Fair Value Measurements	March 31, 2020 Total Level 1 Level 2 Level 3 Assets Futures $ 5,734,172 $ 5,734,172 $ - $ - Forwards 10,533,160 - 10,533,160 - Total assets $ 16,267,332 $ 5,734,172 $ 10,533,160 $ - Liabilities Futures $ 4,500,328 $ 4,500,328 $ - $ - Forwards 10,088,363 - 10,088,363 - Total liabilities $ 14,588,691 $ 4,500,328 $ 10,088,363 $ - December 31, 2019 Total Level 1 Level 2 Level 3 Assets Futures $ 6,198,249 $ 6,198,249 $ - $ - Forwards 2,919,920 - 2,919,920 - Total assets $ 9,118,169 $ 6,198,249 $ 2,919,920 $ - Liabilities Futures $ 7,067,478 $ 7,067,478 $ - $ - Forwards 4,970,886 - 4,970,886 - Total liabilities $ 12,038,364 $ 7,067,478 $ 4,970,886 $ -

Organization - Additional Infor

Organization - Additional Information (Detail)	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Maximum amount of partnership assets allocated to trading advisor	1.5 times
CMF Winton Master L.P. [Member]
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Percentage of Partnership owned	70.40%	62.50%
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_4

Basis of Presentation and Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Accounting Policies [Abstract]
Cash denominated in foreign currencies	$ 4,150,692	$ 5,683,449
Cost of foreign currencies	4,009,487	5,580,696
Cash held for margin requirements	17,468,285	$ 32,343,512
Uncertain tax position	$ 0
Open tax year	2016 2017 2018 2019

Basis of Presentation and Sum_5

Basis of Presentation and Summary of Significant Accounting Policies - Statements of Financial Condition (Detail) - USD ($)	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019	Dec. 31, 2018
Equity in trading accounts:
Restricted cash	$ 17,468,285	$ 32,343,512
Total assets	110,274,641	130,119,172
Accrued expenses:
Professional fees	238,588	261,695
Total liabilities	10,726,697	1,501,117
Partners' Capital:
Total partners' capital (net asset value)	99,547,944	128,618,055	$ 174,126,924	$ 183,117,959
Total liabilities and partners' capital	$ 110,274,641	130,119,172
Net asset value per Redeemable Unit	$ 3,689.80		$ 4,130.18
CMF Winton Master L.P. [Member]
Equity in trading accounts:
Unrestricted cash	$ 149,902,541	182,012,280
Restricted cash	17,468,285	32,343,512
Net unrealized appreciation on open contracts	3,645,634	427,675
Total equity in trading accounts	169,049,467	214,355,792
Total assets	169,049,467	214,355,792
Liabilities:
Net unrealized depreciation on open contracts	1,966,993	3,347,870
Accrued expenses:
Professional fees	66,180	59,679
Redemptions payable	27,747,627	5,973,309
Total liabilities	27,813,807	8,953,183
Partners' Capital:
Limited Partners, 38,277.3364 and 48,847.3360 Redeemable Units outstanding at March 31, 2020 and December 31, 2019, respectively	141,235,660	205,402,609
Total partners' capital (net asset value)	141,235,660	205,402,609	$ 308,451,454	$ 339,199,614
Total liabilities and partners' capital	$ 169,049,467	$ 214,355,792
Net asset value per Redeemable Unit	$ 3,689.80	$ 4,204.99	$ 4,130.18	$ 4,084.22
Future Contracts [Member] | CMF Winton Master L.P. [Member]
Equity in trading accounts:
Net unrealized appreciation on open contracts	$ 1,233,844
Liabilities:
Net unrealized depreciation on open contracts		$ 869,229
Forward Contracts [Member] | CMF Winton Master L.P. [Member]
Equity in trading accounts:
Net unrealized appreciation on open contracts	$ 444,797
Liabilities:
Net unrealized depreciation on open contracts		$ 2,050,966

Basis of Presentation and Sum_6

Basis of Presentation and Summary of Significant Accounting Policies - Statements of Financial Condition (Parenthetical) (Detail) - CMF Winton Master L.P. [Member] - shares	Mar. 31, 2020	Dec. 31, 2019
Condensed Financial Statements, Captions [Line Items]
General Partner, Unit outstanding	0	0
Limited Partners, Units outstanding	38,277.3364	48,847.3360

Basis of Presentation and Sum_7

Basis of Presentation and Summary of Significant Accounting Policies - Condensed Schedule of Investments (Detail)		Mar. 31, 2020USD ($)Derivative		Dec. 31, 2019USD ($)Derivative
Schedule of Investments [Line Items]
Investment in Master, at fair value	[1]	$ 99,434,279		$ 128,504,409
CMF Winton Master L.P. [Member] | Forward Contracts [Member]
Schedule of Investments [Line Items]
Net unrealized appreciation (depreciation) on open contracts		$ 444,797		$ (2,050,966)
Percentage of Partners' Capital		0.31%		(1.00%)
Total unrealized appreciation on open contracts		$ 10,533,160		$ 2,919,920
Total unrealized depreciation on open contracts		(10,088,363)		(4,970,886)
CMF Winton Master L.P. [Member] | Forward Contracts [Member] | Currencies [Member]
Schedule of Investments [Line Items]
Notional		53,810,316		83,027,986
Total unrealized appreciation on open contracts		2,015,890		1,138,504
Notional		102,724,644		42,818,809
Total unrealized depreciation on open contracts		(3,982,883)		(710,829)
CMF Winton Master L.P. [Member] | Forward Contracts [Member] | Metals [Member]
Schedule of Investments [Line Items]
Total unrealized appreciation on open contracts		8,517,270		1,781,416
Total unrealized depreciation on open contracts		$ (6,105,480)		$ (4,260,057)
CMF Winton Master L.P. [Member] | Unrealized Depreciation [Member] | Forward Contracts [Member]
Schedule of Investments [Line Items]
Percentage of Partners' Capital		(7.15%)		(2.42%)
CMF Winton Master L.P. [Member] | Unrealized Depreciation [Member] | Forward Contracts [Member] | Currencies [Member]
Schedule of Investments [Line Items]
Percentage of Partners' Capital		(2.83%)		(0.35%)
CMF Winton Master L.P. [Member] | Unrealized Depreciation [Member] | Forward Contracts [Member] | Metals [Member]
Schedule of Investments [Line Items]
Number of Contracts | Derivative		613		902
Percentage of Partners' Capital		(4.32%)		(2.07%)
CMF Winton Master L.P. [Member] | Unrealized Appreciation [Member] | Forward Contracts [Member]
Schedule of Investments [Line Items]
Percentage of Partners' Capital		7.46%		1.42%
CMF Winton Master L.P. [Member] | Unrealized Appreciation [Member] | Forward Contracts [Member] | Currencies [Member]
Schedule of Investments [Line Items]
Percentage of Partners' Capital		1.43%		0.55%
CMF Winton Master L.P. [Member] | Unrealized Appreciation [Member] | Forward Contracts [Member] | Metals [Member]
Schedule of Investments [Line Items]
Number of Contracts | Derivative		1,150		430
Percentage of Partners' Capital		6.03%		0.87%
CMF Winton Master L.P. [Member] | Futures Contracts [Member]
Schedule of Investments [Line Items]
Net unrealized appreciation (depreciation) on open contracts		$ 1,233,844		$ (869,229)
Percentage of Partners' Capital		0.87%		(0.42%)
Total unrealized appreciation on open contracts		$ 5,734,172		$ 6,198,249
Total unrealized depreciation on open contracts		(4,500,328)		(7,067,478)
CMF Winton Master L.P. [Member] | Futures Contracts [Member] | Currencies [Member]
Schedule of Investments [Line Items]
Total unrealized appreciation on open contracts		1,315,677		882,389
Total unrealized depreciation on open contracts		(1,082,374)		(1,806,426)
CMF Winton Master L.P. [Member] | Futures Contracts [Member] | Energy [Member]
Schedule of Investments [Line Items]
Total unrealized appreciation on open contracts		1,222,420		1,610,681
Total unrealized depreciation on open contracts		(66,774)		(132,370)
CMF Winton Master L.P. [Member] | Futures Contracts [Member] | Grains [Member]
Schedule of Investments [Line Items]
Total unrealized appreciation on open contracts		201,404		248,161
Total unrealized depreciation on open contracts		(521,578)		(1,134,872)
CMF Winton Master L.P. [Member] | Futures Contracts [Member] | Indices [Member]
Schedule of Investments [Line Items]
Total unrealized appreciation on open contracts		168,228		1,039,584
Total unrealized depreciation on open contracts		(425,325)		(513,537)
CMF Winton Master L.P. [Member] | Futures Contracts [Member] | Interest Rates U.S. [Member]
Schedule of Investments [Line Items]
Total unrealized appreciation on open contracts		1,124,405		133,188
Total unrealized depreciation on open contracts		(194,148)		(1,154,102)
CMF Winton Master L.P. [Member] | Futures Contracts [Member] | Interest Rates Non-U.S. [Member]
Schedule of Investments [Line Items]
Total unrealized appreciation on open contracts		592,698		119,694
Total unrealized depreciation on open contracts		(813,272)		(1,269,703)
CMF Winton Master L.P. [Member] | Futures Contracts [Member] | Livestock [Member]
Schedule of Investments [Line Items]
Total unrealized appreciation on open contracts		398,408		2,270
Total unrealized depreciation on open contracts		(141,688)		(65,083)
CMF Winton Master L.P. [Member] | Futures Contracts [Member] | Metals [Member]
Schedule of Investments [Line Items]
Total unrealized appreciation on open contracts		155,265		2,107,650
Total unrealized depreciation on open contracts		(595,547)		(29,852)
CMF Winton Master L.P. [Member] | Futures Contracts [Member] | Softs [Member]
Schedule of Investments [Line Items]
Total unrealized appreciation on open contracts		555,667		54,632
Total unrealized depreciation on open contracts		(659,622)		(961,533)
CMF Winton Master L.P. [Member] | Futures Contracts [Member] | Contracts Purchased [Member]
Schedule of Investments [Line Items]
Investment in Master, at fair value		$ 301,943		$ 1,812,463
Percentage of Partners' Capital		0.21%		0.88%
CMF Winton Master L.P. [Member] | Futures Contracts [Member] | Contracts Purchased [Member] | Currencies [Member]
Schedule of Investments [Line Items]
Number of Contracts | Derivative		277		1,026
Investment in Master, at fair value		$ (357,540)		$ 816,084
Percentage of Partners' Capital		(0.25%)		0.40%
CMF Winton Master L.P. [Member] | Futures Contracts [Member] | Contracts Purchased [Member] | Energy [Member]
Schedule of Investments [Line Items]
Number of Contracts | Derivative		454		546
Investment in Master, at fair value		$ 1,155,646		$ 499,579
Percentage of Partners' Capital		0.82%		0.24%
CMF Winton Master L.P. [Member] | Futures Contracts [Member] | Contracts Purchased [Member] | Grains [Member]
Schedule of Investments [Line Items]
Number of Contracts | Derivative		4		202
Investment in Master, at fair value		$ 517		$ 245,197
Percentage of Partners' Capital		0.00%	[2]	0.12%
CMF Winton Master L.P. [Member] | Futures Contracts [Member] | Contracts Purchased [Member] | Indices [Member]
Schedule of Investments [Line Items]
Number of Contracts | Derivative		32		1,457
Investment in Master, at fair value		$ 157,200		$ 743,917
Percentage of Partners' Capital		0.11%		0.36%
CMF Winton Master L.P. [Member] | Futures Contracts [Member] | Contracts Purchased [Member] | Interest Rates U.S. [Member]
Schedule of Investments [Line Items]
Number of Contracts | Derivative		143		452
Investment in Master, at fair value		$ 1,124,374		$ (1,147,946)
Percentage of Partners' Capital		0.80%		(0.56%)
CMF Winton Master L.P. [Member] | Futures Contracts [Member] | Contracts Purchased [Member] | Interest Rates Non-U.S. [Member]
Schedule of Investments [Line Items]
Number of Contracts | Derivative		1,384		1,986
Investment in Master, at fair value		$ (117,809)		$ (1,180,458)
Percentage of Partners' Capital		(0.09%)		(0.57%)
CMF Winton Master L.P. [Member] | Futures Contracts [Member] | Contracts Purchased [Member] | Livestock [Member]
Schedule of Investments [Line Items]
Number of Contracts | Derivative				7
Investment in Master, at fair value				$ 1,107
Percentage of Partners' Capital	[2]			0.00%
CMF Winton Master L.P. [Member] | Futures Contracts [Member] | Contracts Purchased [Member] | Metals [Member]
Schedule of Investments [Line Items]
Number of Contracts | Derivative		113		795
Investment in Master, at fair value		$ (80,262)		$ 2,077,798
Percentage of Partners' Capital		(0.06%)		1.01%
CMF Winton Master L.P. [Member] | Futures Contracts [Member] | Contracts Purchased [Member] | Softs [Member]
Schedule of Investments [Line Items]
Number of Contracts | Derivative		169		325
Investment in Master, at fair value		$ (424,537)		$ (242,815)
Percentage of Partners' Capital		(0.30%)		(0.12%)
CMF Winton Master L.P. [Member] | Futures Contracts [Member] | Contracts Sold [Member]
Schedule of Investments [Line Items]
Investment in Master, at fair value		$ 931,901		$ (2,681,692)
Percentage of Partners' Capital		0.66%		(1.30%)
CMF Winton Master L.P. [Member] | Futures Contracts [Member] | Contracts Sold [Member] | Currencies [Member]
Schedule of Investments [Line Items]
Number of Contracts | Derivative		672		1,365
Investment in Master, at fair value		$ 590,843		$ (1,740,121)
Percentage of Partners' Capital		0.42%		(0.85%)
CMF Winton Master L.P. [Member] | Futures Contracts [Member] | Contracts Sold [Member] | Energy [Member]
Schedule of Investments [Line Items]
Number of Contracts | Derivative				759
Investment in Master, at fair value				$ 978,732
Percentage of Partners' Capital				0.48%
CMF Winton Master L.P. [Member] | Futures Contracts [Member] | Contracts Sold [Member] | Grains [Member]
Schedule of Investments [Line Items]
Number of Contracts | Derivative		663		859
Investment in Master, at fair value		$ (320,691)		$ (1,131,908)
Percentage of Partners' Capital		(0.24%)		(0.55%)
CMF Winton Master L.P. [Member] | Futures Contracts [Member] | Contracts Sold [Member] | Indices [Member]
Schedule of Investments [Line Items]
Number of Contracts | Derivative		216		292
Investment in Master, at fair value		$ (414,297)		$ (217,870)
Percentage of Partners' Capital		(0.29%)		(0.11%)
CMF Winton Master L.P. [Member] | Futures Contracts [Member] | Contracts Sold [Member] | Interest Rates U.S. [Member]
Schedule of Investments [Line Items]
Number of Contracts | Derivative		54		616
Investment in Master, at fair value		$ (194,117)		$ 127,032
Percentage of Partners' Capital		(0.14%)		0.06%
CMF Winton Master L.P. [Member] | Futures Contracts [Member] | Contracts Sold [Member] | Interest Rates Non-U.S. [Member]
Schedule of Investments [Line Items]
Number of Contracts | Derivative		355		551
Investment in Master, at fair value		$ (102,765)		$ 30,449
Percentage of Partners' Capital		(0.07%)		0.01%
CMF Winton Master L.P. [Member] | Futures Contracts [Member] | Contracts Sold [Member] | Livestock [Member]
Schedule of Investments [Line Items]
Number of Contracts | Derivative		220		48
Investment in Master, at fair value		$ 256,720		$ (63,920)
Percentage of Partners' Capital		0.18%		(0.03%)
CMF Winton Master L.P. [Member] | Futures Contracts [Member] | Contracts Sold [Member] | Metals [Member]
Schedule of Investments [Line Items]
Number of Contracts | Derivative		128
Investment in Master, at fair value		$ (360,020)
Percentage of Partners' Capital		(0.25%)
CMF Winton Master L.P. [Member] | Futures Contracts [Member] | Contracts Sold [Member] | Softs [Member]
Schedule of Investments [Line Items]
Number of Contracts | Derivative		356		465
Investment in Master, at fair value		$ 320,582		$ (664,086)
Percentage of Partners' Capital		0.23%		(0.31%)
[1]	Defined in Note 1.
[2]	Due to rounding.

Basis of Presentation and Sum_8

Basis of Presentation and Summary of Significant Accounting Policies - Statements of Income and Expenses and Changes in Partners' Capital (Detail) - USD ($)		3 Months Ended
		Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019	Dec. 31, 2018
Investment Income:
Interest income		$ 332,981	$ 968,047
Expenses:
Professional fees		83,914	123,572
Total expenses		1,487,364	2,100,877
Net investment income (loss)		(1,154,383)	(1,132,830)
Net gains (losses) on trading of commodity interests:
Net change in unrealized gains (losses) on open contracts		3,160,971	9,046,250
Total trading results		(15,389,767)	1,904,173
Net income (loss)		(16,544,150)	771,343
Balance, value		128,618,055	183,117,959
Balance, value		$ 99,547,944	$ 174,126,924
Net asset value per Redeemable Unit (38,277.3364 and 74,682.3046 Redeemable Units outstanding at March 31, 2020 and 2019, respectively)		$ 3,689.80	$ 4,130.18
CMF Winton Master L.P. [Member]
Investment Income:
Interest income		$ 526,273	$ 1,770,886
Expenses:
Clearing fees		117,667	89,282
Professional fees		21,000	15,750
Total expenses		138,667	105,032
Net investment income (loss)		387,606	1,665,854
Net gains (losses) on trading of commodity interests:
Net realized gains (losses) on closed contracts		(28,591,076)	(13,387,345)
Net change in unrealized gains (losses) on open contracts		4,637,288	16,624,678
Total trading results		(23,953,788)	3,237,333
Net income (loss)		(23,566,182)	4,903,187
Subscriptions - Limited Partners		0	932,964
Redemptions - Limited Partners		(40,111,052)	(34,865,572)
Distribution of interest income to feeder funds		(489,715)	(1,718,739)
Net increase (decrease) in Partners' Capital		(64,166,949)	(30,748,160)
Balance, value		205,402,609	339,199,614
Balance, value		$ 141,235,660	$ 308,451,454
Net asset value per Redeemable Unit (38,277.3364 and 74,682.3046 Redeemable Units outstanding at March 31, 2020 and 2019, respectively)		$ 3,689.80	$ 4,130.18	$ 4,204.99	$ 4,084.22
Net income (loss) per Redeemable Unit	[1]	$ (504.86)	$ 67.27
Weighted average Redeemable Units outstanding		47,391.1239	80,663.7625
[1]	Represents the change in net asset value per Redeemable Unit during the period before distribution of interest income to feeder funds.

Basis of Presentation and Sum_9

Basis of Presentation and Summary of Significant Accounting Policies - Statements of Income and Expenses and Changes in Partners' Capital (Parenthetical) (Detail) - shares	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019	Dec. 31, 2018
Condensed Financial Statements, Captions [Line Items]
Net asset value per redeemable unit outstanding	87,282.6885	98,059.9845	132,342.5505	139,852.0965
CMF Winton Master L.P. [Member]
Condensed Financial Statements, Captions [Line Items]
Net asset value per redeemable unit outstanding	38,277.3364		74,682.3046

Financial Highlights - Financia

Financial Highlights - Financial Highlights for Limited Partner Classes (Detail) - $ / shares	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Per Redeemable Unit Performance (for a unit outstanding throughout the period):
Net asset value per Redeemable Unit, end of period	$ 3,689.80	$ 4,130.18
CMF Winton Master L.P. [Member]
Per Redeemable Unit Performance (for a unit outstanding throughout the period):
Net realized and unrealized gains (losses)	(513.04)	46.62
Net investment loss	8.18	20.65
Increase (decrease) for the period	(504.86)	67.27
Distribution of interest income to feeder funds	(10.33)	(21.31)
Net asset value per Redeemable Unit, beginning of period	4,204.99	4,084.22
Net asset value per Redeemable Unit, end of period	$ 3,689.80	$ 4,130.18
Ratios to Average Limited Partners' Capital:
Net investment loss	0.80%	2.10%
Operating expenses	0.30%	0.10%
Total return	(12.00%)	1.60%
Class A [Member]
Per Redeemable Unit Performance (for a unit outstanding throughout the period):
Net asset value per Redeemable Unit, beginning of period	$ 1,311.75
Net asset value per Redeemable Unit, end of period	1,140.38
Class A [Member] | Limited Partners [Member]
Per Redeemable Unit Performance (for a unit outstanding throughout the period):
Net realized and unrealized gains (losses)	(159.22)	$ 14.80
Net investment loss	(12.15)	(8.90)
Increase (decrease) for the period	(171.37)	5.90
Net asset value per Redeemable Unit, beginning of period	1,311.75	1,313.04
Net asset value per Redeemable Unit, end of period	$ 1,140.38	$ 1,318.94
Ratios to Average Limited Partners' Capital:
Net investment loss	(4.00%)	(2.80%)
Operating expenses	5.20%	5.00%
Incentive fees	0.00%	0.00%
Total expenses	5.20%	5.00%
Total return:
Total return before incentive fees	(13.10%)	0.40%
Incentive fees	0.00%	0.00%
Total return after incentive fees	(13.10%)	0.40%
Class D [Member]
Per Redeemable Unit Performance (for a unit outstanding throughout the period):
Net asset value per Redeemable Unit, beginning of period	$ 1,296.66
Net asset value per Redeemable Unit, end of period	1,130.80
Class D [Member] | Limited Partners [Member]
Per Redeemable Unit Performance (for a unit outstanding throughout the period):
Net realized and unrealized gains (losses)	(157.63)	$ 14.53
Net investment loss	(8.23)	(4.73)
Increase (decrease) for the period	(165.86)	9.80
Net asset value per Redeemable Unit, beginning of period	1,296.66	1,281.77
Net asset value per Redeemable Unit, end of period	$ 1,130.80	$ 1,291.57
Ratios to Average Limited Partners' Capital:
Net investment loss	(2.70%)	(1.50%)
Operating expenses	3.80%	3.70%
Incentive fees	0.00%	0.00%
Total expenses	3.80%	3.70%
Total return:
Total return before incentive fees	(12.80%)	0.80%
Incentive fees	0.00%	0.00%
Total return after incentive fees	(12.80%)	0.80%
Class Z [Member]
Per Redeemable Unit Performance (for a unit outstanding throughout the period):
Net asset value per Redeemable Unit, beginning of period	$ 1,356.37
Net asset value per Redeemable Unit, end of period	1,185.10
Class Z [Member] | Limited Partners [Member]
Per Redeemable Unit Performance (for a unit outstanding throughout the period):
Net realized and unrealized gains (losses)	(165.03)	$ 15.13
Net investment loss	(6.24)	(2.44)
Increase (decrease) for the period	(171.27)	12.69
Net asset value per Redeemable Unit, beginning of period	1,356.37	1,330.76
Net asset value per Redeemable Unit, end of period	$ 1,185.10	$ 1,343.45
Ratios to Average Limited Partners' Capital:
Net investment loss	(1.90%)	(0.70%)
Operating expenses	3.00%	2.90%
Incentive fees	0.00%	0.00%
Total expenses	3.00%	2.90%
Total return:
Total return before incentive fees	(12.60%)	1.00%
Incentive fees	0.00%	0.00%
Total return after incentive fees	(12.60%)	1.00%

Trading Activities - Additional

Trading Activities - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2020USD ($)Contract	Mar. 31, 2019USD ($)Contract
Trading Activity, Gains and Losses, Net [Line Items]
Monthly average number of futures contracts traded	9,436	15,907
Monthly average number of metals forward contracts traded	1,548	1,645
Forward Contracts [Member] | Currencies [Member] | Weighted Average [Member]
Trading Activity, Gains and Losses, Net [Line Items]
Average notional values of currency forward contracts | $	$ 145,771,349	$ 197,176,705

Trading Activities - Summary of

Trading Activities - Summary of Valuation of Master's Investments (Detail) - CMF Winton Master L.P. [Member] - USD ($)	Mar. 31, 2020	Dec. 31, 2019
Derivative [Line Items]
Gross Amounts Recognized, Assets	$ 16,267,332	$ 9,118,169
Gross Amounts Offset in the Statements of Financial Condition, Assets	(12,621,698)	(8,690,494)
Amounts Presented in the Statements of Financial Condition, Assets	3,645,634	427,675
Net Amount, Assets	3,645,634	427,675
Gross Amounts Recognized, Liabilities	(14,588,691)	(12,038,364)
Gross Amounts Offset in the Statements of Financial Condition, Liabilities	12,621,698	8,690,494
Amounts Presented in the Statements of Financial Condition, Liabilities	(1,966,993)	(3,347,870)
Financial Instruments, Liabilities	0
Cash Collateral Received/Pledged, Liabilities	1,966,993	3,347,870
Net fair value	3,645,634	427,675
MS&Co. [Member]
Derivative [Line Items]
Gross Amounts Recognized, Assets	14,251,442	7,979,665
Gross Amounts Offset in the Statements of Financial Condition, Assets	(10,605,808)	(7,979,665)
Amounts Presented in the Statements of Financial Condition, Assets	3,645,634
Net Amount, Assets	3,645,634
Gross Amounts Recognized, Liabilities	(10,605,808)	(11,327,535)
Gross Amounts Offset in the Statements of Financial Condition, Liabilities	10,605,808	7,979,665
Amounts Presented in the Statements of Financial Condition, Liabilities		(3,347,870)
Cash Collateral Received/Pledged, Liabilities		3,347,870
Futures Contracts [Member]
Derivative [Line Items]
Amounts Presented in the Statements of Financial Condition, Assets	1,233,844
Amounts Presented in the Statements of Financial Condition, Liabilities		(869,229)
Futures Contracts [Member] | MS&Co. [Member]
Derivative [Line Items]
Gross Amounts Recognized, Assets	5,734,172	6,198,249
Gross Amounts Offset in the Statements of Financial Condition, Assets	(4,500,328)	(6,198,249)
Amounts Presented in the Statements of Financial Condition, Assets	1,233,844
Net Amount, Assets	1,233,844
Gross Amounts Recognized, Liabilities	(4,500,328)	(7,067,478)
Gross Amounts Offset in the Statements of Financial Condition, Liabilities	4,500,328	6,198,249
Amounts Presented in the Statements of Financial Condition, Liabilities		(869,229)
Cash Collateral Received/Pledged, Liabilities		869,229
Forward Contracts [Member]
Derivative [Line Items]
Amounts Presented in the Statements of Financial Condition, Assets	444,797
Amounts Presented in the Statements of Financial Condition, Liabilities		(2,050,966)
Forward Contracts [Member] | MS&Co. [Member]
Derivative [Line Items]
Gross Amounts Recognized, Assets	8,517,270	1,781,416
Gross Amounts Offset in the Statements of Financial Condition, Assets	(6,105,480)	(1,781,416)
Amounts Presented in the Statements of Financial Condition, Assets	2,411,790
Net Amount, Assets	2,411,790
Gross Amounts Recognized, Liabilities	(6,105,480)	(4,260,057)
Gross Amounts Offset in the Statements of Financial Condition, Liabilities	6,105,480	1,781,416
Amounts Presented in the Statements of Financial Condition, Liabilities		(2,478,641)
Cash Collateral Received/Pledged, Liabilities		2,478,641
Forward Contracts [Member] | JPMorgan [Member]
Derivative [Line Items]
Gross Amounts Recognized, Assets	2,015,890	1,138,504
Gross Amounts Offset in the Statements of Financial Condition, Assets	(2,015,890)	(710,829)
Amounts Presented in the Statements of Financial Condition, Assets	0	427,675
Net Amount, Assets	0	427,675
Gross Amounts Recognized, Liabilities	(3,982,883)	(710,829)
Gross Amounts Offset in the Statements of Financial Condition, Liabilities	2,015,890	$ 710,829
Amounts Presented in the Statements of Financial Condition, Liabilities	(1,966,993)
Cash Collateral Received/Pledged, Liabilities	$ 1,966,993

Trading Activities - Gross Fair

Trading Activities - Gross Fair Values of Master's Derivative Instruments of Futures and Forward Contracts as Separate Assets and Liabilities (Detail) - CMF Winton Master L.P. [Member] - USD ($)	Mar. 31, 2020	Dec. 31, 2019
Futures Contracts [Member]
Derivative [Line Items]
Total unrealized appreciation on open contracts	$ 5,734,172	$ 6,198,249
Total unrealized depreciation on open contracts	(4,500,328)	(7,067,478)
Net unrealized appreciation (depreciation) on open contracts	1,233,844	(869,229)
Futures Contracts [Member] | Currencies [Member]
Derivative [Line Items]
Total unrealized appreciation on open contracts	1,315,677	882,389
Total unrealized depreciation on open contracts	(1,082,374)	(1,806,426)
Futures Contracts [Member] | Energy [Member]
Derivative [Line Items]
Total unrealized appreciation on open contracts	1,222,420	1,610,681
Total unrealized depreciation on open contracts	(66,774)	(132,370)
Futures Contracts [Member] | Grains [Member]
Derivative [Line Items]
Total unrealized appreciation on open contracts	201,404	248,161
Total unrealized depreciation on open contracts	(521,578)	(1,134,872)
Futures Contracts [Member] | Indices [Member]
Derivative [Line Items]
Total unrealized appreciation on open contracts	168,228	1,039,584
Total unrealized depreciation on open contracts	(425,325)	(513,537)
Futures Contracts [Member] | Interest Rates U.S. [Member]
Derivative [Line Items]
Total unrealized appreciation on open contracts	1,124,405	133,188
Total unrealized depreciation on open contracts	(194,148)	(1,154,102)
Futures Contracts [Member] | Interest Rates Non-U.S. [Member]
Derivative [Line Items]
Total unrealized appreciation on open contracts	592,698	119,694
Total unrealized depreciation on open contracts	(813,272)	(1,269,703)
Futures Contracts [Member] | Livestock [Member]
Derivative [Line Items]
Total unrealized appreciation on open contracts	398,408	2,270
Total unrealized depreciation on open contracts	(141,688)	(65,083)
Futures Contracts [Member] | Metals [Member]
Derivative [Line Items]
Total unrealized appreciation on open contracts	155,265	2,107,650
Total unrealized depreciation on open contracts	(595,547)	(29,852)
Futures Contracts [Member] | Softs [Member]
Derivative [Line Items]
Total unrealized appreciation on open contracts	555,667	54,632
Total unrealized depreciation on open contracts	(659,622)	(961,533)
Forward Contracts [Member]
Derivative [Line Items]
Total unrealized appreciation on open contracts	10,533,160	2,919,920
Total unrealized depreciation on open contracts	(10,088,363)	(4,970,886)
Net unrealized appreciation (depreciation) on open contracts	444,797	(2,050,966)
Forward Contracts [Member] | Currencies [Member]
Derivative [Line Items]
Total unrealized appreciation on open contracts	2,015,890	1,138,504
Total unrealized depreciation on open contracts	(3,982,883)	(710,829)
Forward Contracts [Member] | Metals [Member]
Derivative [Line Items]
Total unrealized appreciation on open contracts	8,517,270	1,781,416
Total unrealized depreciation on open contracts	$ (6,105,480)	$ (4,260,057)

Trading Activities - Master's T

Trading Activities - Master's Trading Gains and Losses, by Market Sector, on Derivative Instruments (Detail) - CMF Winton Master L.P. [Member] - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Derivative [Line Items]
Trading gains and losses	$ (23,953,788)	$ 3,237,333
Currencies [Member]
Derivative [Line Items]
Trading gains and losses	(6,706,169)	1,028,205
Energy [Member]
Derivative [Line Items]
Trading gains and losses	(3,803,142)	(6,833,697)
Grains [Member]
Derivative [Line Items]
Trading gains and losses	493,619	3,420,567
Indices [Member]
Derivative [Line Items]
Trading gains and losses	(17,414,130)	3,567,356
Interest Rates U.S. [Member]
Derivative [Line Items]
Trading gains and losses	3,986,866	237,116
Interest Rates Non-U.S. [Member]
Derivative [Line Items]
Trading gains and losses	(736,133)	3,319,930
Livestock [Member]
Derivative [Line Items]
Trading gains and losses	1,236,615	(983,460)
Metals [Member]
Derivative [Line Items]
Trading gains and losses	1,055,222	(1,176,605)
Softs [Member]
Derivative [Line Items]
Trading gains and losses	$ (2,066,536)	$ 657,921

Fair Value Measurements - Maste

Fair Value Measurements - Master's Fair Value Measurements (Detail) - USD ($)	Mar. 31, 2020	Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	$ 16,267,332	$ 9,118,169
Derivative Liabilities	14,588,691	12,038,364
Futures Contracts [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	5,734,172	6,198,249
Derivative Liabilities	4,500,328	7,067,478
Forward Contracts [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	10,533,160	2,919,920
Derivative Liabilities	10,088,363	4,970,886
Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	5,734,172	6,198,249
Derivative Liabilities	4,500,328	7,067,478
Level 1 [Member] | Futures Contracts [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	5,734,172	6,198,249
Derivative Liabilities	4,500,328	7,067,478
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	10,533,160	2,919,920
Derivative Liabilities	10,088,363	4,970,886
Level 2 [Member] | Forward Contracts [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	10,533,160	2,919,920
Derivative Liabilities	$ 10,088,363	$ 4,970,886

Financial Instrument Risks - Ad

Financial Instrument Risks - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2020
Financial instruments maturity period	1 year
Credit Concentration Risk [Member] | Master's Contracts [Member] | Over the Counter [Member] | Minimum [Member]
Concentration risk percentage	18.70%
Credit Concentration Risk [Member] | Master's Contracts [Member] | Over the Counter [Member] | Maximum [Member]
Concentration risk percentage	31.90%