Potomac Futures Fund (POTO) 10-Q 13 May 15 2015 Q1 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	3 Months Ended
	Mar. 31, 2015	Apr. 30, 2015
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	FALSE
Document Period End Date	31-Mar-15
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q1
Trading Symbol	poto
Entity Registrant Name	POTOMAC FUTURES FUND LP
Entity Central Index Key	1043565
Current Fiscal Year End Date	-19
Entity Filer Category	Non-accelerated Filer
Entity Common Stock, Shares Outstanding		17,500.55

Statements_of_Financial_Condit

Statements of Financial Condition (USD $)	Mar. 31, 2015		Dec. 31, 2014
Assets:
Investment in Master(1), at fair value	$32,077,583	[1]	$30,700,788	[1]
Cash	110,944		132,084
Total assets	32,188,527		30,832,872
Accrued expenses:
Ongoing selling agent fees	53,648		51,388
Management fees	40,045		38,353
Administrative fees	26,696		25,569
Incentive fees	84,431
Other	99,211		99,221
Redemptions payable	80,416		375,913
Total liabilities	384,447		590,444
Partners' Capital:
General Partner 192.5786 Redeemable Units outstanding at March 31, 2015 and December 31, 2014	349,549		322,878
Limited Partners 17,329.3818 and 17,845.3078 Redeemable Units outstanding at March 31, 2015 and December 31, 2014, respectively	31,454,531		29,919,550
Total partners' capital	31,804,080		30,242,428
Total liabilities and partners' capital	$32,188,527		$30,832,872
Net asset value per unit	$1,815.10		$1,676.61
[1]	Defined in Note 1.

Statements_of_Financial_Condit1

Statements of Financial Condition (Parenthetical)	Mar. 31, 2015	Dec. 31, 2014
Statement of Financial Position [Abstract]
General Partner Redeemable Units outstanding	192.5786	192.5786
Limited Partners Redeemable Units outstanding	17,329.38	17,845.31

Statements_of_Income_and_Expen

Statements of Income and Expenses and Changes in Partners' Capital (USD $)	3 Months Ended
	Mar. 31, 2015		Mar. 31, 2014
Investment Income:
Interest income allocated from Master	$541		$1,896
Expenses:
Expenses allocated from Master	66,271		79,266
Ongoing selling agent fees	160,667		411,918
Management fees	119,981		148,344
Administrative fees	79,986
Incentive fees	84,431
Other	42,117		130,405
Total expenses	553,453		769,933
Net investment income (loss)	-552,912		-768,037
Trading Results:
Net realized gains (losses) on closed contracts allocated from Master	3,432,478		-2,513,725
Change in net unrealized gains (losses) on open contracts allocated from Master	-388,516		-579,425
Total trading results allocated from Master	3,043,962		-3,093,150
Net income (loss)	2,491,050		-3,861,187
Subscriptions-Limited Partners	383,092		3,201,764
Redemptions-Limited Partners	-1,312,490		-1,848,367
Net increase (decrease) in Partners' Capital	1,561,652		-2,507,790
Partners' Capital, beginning of period	30,242,428		30,103,205
Partners' Capital, end of period	$31,804,080		$27,595,415
Net asset value per unit (17,521.9604 and 22,219.7484 units outstanding at March 31, 2015 and 2014, respectively)	$1,815.10		$1,241.93
Net income (loss) per unit	$138.49	[1]	($169.38)	[1]
Weighted average units outstanding	17,855.66		22,743.05
[1]	Represents the change in net asset value per unit during the period.

Statements_of_Income_and_Expen1

Statements of Income and Expenses and Changes in Partners' Capital (Parenthetical)	Mar. 31, 2015	Mar. 31, 2014
Income Statement [Abstract]
Net asset value per unit outstanding	17,521.96	22,219.75

Organization

Organization	3 Months Ended
	Mar. 31, 2015
Accounting Policies [Abstract]
Organization	1	Organization:
	Potomac Futures Fund L.P. (the “Partnership”) is a limited partnership organized on March 14, 1997 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. interest rates, livestock, metals and softs. The commodity interests that are indirectly traded by the Partnership through its investment in CMF Campbell Master Fund L.P., a limited partnership organized under the partnership laws of the state of New York, (the “Master”) are volatile and involve a high degree of market risk. The General Partner may also determine to invest up to all of the Partnership’s asset in the United States Treasury bills. The Partnership was authorized to sell an unlimited number of redeemable units (“Redeemable Units”) during its initial offering period. The Partnership privately and continuously offers Redeemable Units in the Partnership to qualified investors. There is no maximum number of Redeemable Units that may be sold by the Partnership.
	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 wholly owned by Morgan Stanley Smith Barney Holdings LLC (“MSSB Holdings”). MSSB 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. Prior to June 28, 2013, Morgan Stanley indirectly owned a majority equity interest in MSSB Holdings and Citigroup Inc. indirectly owned a minority interest in MSSB Holdings. Prior to July 31, 2009, the date as of which MSSB Holdings became its owner, the General Partner was wholly owned by Citigroup Financial Products Inc., a wholly owned subsidiary of Citigroup Global Markets Holdings Inc., the sole owner of which is Citigroup Inc. As of March 31, 2015, all trading decisions for the Partnership are made by Campbell & Company, Inc. (the “Advisor”).
	On January 1, 2005, the Partnership allocated substantially all of its capital to the Master. The Partnership purchased 173,788.6446 units of the Master with cash equal to $172,205,653 and a contribution of open commodity futures and forward contracts with a fair value of $1,582,992. The units of the Master are used solely for accounting purposes and do not represent units issued legally. The Master was formed in order to permit accounts managed by the Advisor using the Campbell Managed Futures Portfolio (formerly, Financial, Metal and Energy Large Portfolio), a proprietary, systematic trading program, to invest together in one trading vehicle. The General Partner is also the general partner of the Master. As of March 31, 2015, the Partnership’s/Master’s commodity broker was Morgan Stanley & Co. LLC (“MS&Co.”) a registered futures commission merchant. 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 investors as a result of the investment in the Master are approximately the same as they would be if the Partnership traded directly and redemption rights are not affected.
	The General Partner is not aware of any material changes to the trading program discussed above during the fiscal quarter ended March 31, 2015.
	The Master has entered into a foreign exchange brokerage account agreement and a futures brokerage account agreement with MS&Co. The Partnership has entered into a futures brokerage account agreement with MS&Co. and has transferred the brokerage account of the Partnership from Citigroup Global Markets Inc. to MS&Co. The Partnership, through its investment in the Master, pays MS&Co. trading fees for the clearing and, where applicable, execution of transactions.
	The Partnership has also entered into a selling agreement with Morgan Stanley Smith Barney LLC (d/b/a Morgan Stanley Wealth Management). Pursuant to the selling agreement, Morgan Stanley Wealth Management receives a monthly selling agent fee equal to 2.0% per year of the Partnership’s adjusted month-end net assets. The selling agent fee received by Morgan Stanley Wealth Management will be shared with the properly registered/licensed financial advisers of Morgan Stanley Wealth Management who sell redeemable units in the Partnership.
	Effective April 1, 2014, the monthly ongoing selling agent fee was reduced from an annual rate of 5.5% to an annual rate of 3.0%.
	Effective June 1, 2014, the management fee paid to the Advisor was reduced from an annual rate of 2.0% to an annual rate of 1.5%.
	Effective October 1, 2014, the monthly ongoing selling agent fee was reduced from an annual rate of 3.0% to an annual rate of 2.0%. As of the same date, the Partnership began paying an administrative fee to the General Partner at an annual rate of 1.0%. The October 1, 2014 fee changes offset each other and, accordingly, there was no change to the aggregate fees incurred by the Partnership.

Basis_of_Presentation_and_Summ

Basis of Presentation and Summary of Significant Accounting Policies	3 Months Ended
	Mar. 31, 2015
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, 2015 and December 31, 2014, and the results of its operations and changes in partners’ capital for the three months ended March 31, 2015 and 2014. These financial statements present the results of interim periods and do not include all disclosures normally provided in annual financial statements. You should read these financial statements together with the financial statements and notes included in the Partnership’s Annual Report on Form 10-K filed with the Securities and Exchange Commission (the “SEC”) for the year ended December 31, 2014. The December 31, 2014 information has been derived from the audited financial statements as of and for the year ended December 31, 2014.
	The preparation of financial statements and accompanying notes in conformity with accounting principles generally accepted in the United States of America (“GAAP”) requires the General Partner to make estimates and assumptions that affect the reported amounts of assets and liabilities, income and expenses, and related disclosures of contingent assets and liabilities in the financial statements and accompanying notes. As a result, actual results could differ from these estimates.
	As of March 31, 2015 and December 31, 2014, the Partnership owned 100% 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. and foreign commodity exchanges. The Master engages in such trading through a commodity brokerage account maintained with MS&Co. The Master’s Statements of Financial Condition, including Condensed Schedules of Investments and Statements of Income and Expenses and Changes in Partners’ Capital, are included herein.
	The General Partner and each limited partner share in the profits and losses of the Partnership in proportion to the amount of partnership interest owned by each except that no limited partner shall be liable for obligations of the Partnership in excess of its capital contributions and profits, if any, net of distributions or redemptions and losses, if any.
	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.
	Partnership’s Investment: The Partnership carries its investment in the Master at fair value based on the Master’s net asset value per unit as calculated by the Master. The valuation of the Master’s investments including the classification within the fair value hierarchy of the investments held by the Master are described in Note 4.
	Master’s Investments: Fair value of exchange-traded futures, options and forward contracts is determined by the various futures 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 foreign currency option contracts is calculated by applying an industry standard model application for options valuation of foreign currency options, using as inputs the spot prices, interest rates, and option implied volatilities quoted as of approximately 3:00 P.M. (E.T.) on the last business day of the reporting period.
	All commodity interests of the Master (including derivative financial instruments and derivative commodity instruments) are held for trading purposes. The commodity interests are recorded on the trade date and open contracts are recorded at fair value at the measurement date. Investments in commodity interests denominated in foreign currencies are translated into U.S. dollars at the exchange rates prevailing at the measurement date. Gains or losses are realized when contracts are liquidated. Unrealized gains or losses on open contracts are included as a component of equity in trading account on the Master’s Statements of Financial Condition. Net realized gains or losses and any change in net unrealized gains or losses from the preceding period are reported on the Master’s Statements of Income and Expenses and Changes in Partners’ Capital.
	Investment Company Status: Effective January 1, 2014, the Partnership adopted, Accounting Standards Update (“ASU”) 2013-08, “Financial Services — Investments Companies (Topic 946): Amendments to the Scope, Measurement and Disclosure Requirements” and based on General Partner’s assessment, the Partnership has been deemed to be an investment company since inception.
	Income Taxes: Income taxes have not been provided as each partner is individually liable for the taxes, if any, on its share of the Partnership’s income and expenses. GAAP provides guidance for how uncertain tax positions should be recognized, measured, presented and disclosed in the financial statements and requires the evaluation of tax positions taken or expected to be taken in the course of preparing the Partnership’s financial statements to determine whether the tax positions are “more-likely-than-not” to be sustained by the applicable tax authority. Tax positions with respect to tax at the Partnership level not deemed to meet the “more-likely-than-not” threshold would be recorded as a tax benefit or expense in the current year. The General Partner concluded that no provision for income tax is required in the Partnership’s financial statements.
	The Partnership files U.S. federal and various state and local tax returns. No income tax returns are currently under examination. The 2011 through 2014 tax years remain subject to examination by U.S. federal and most state tax authorities. The General Partner does not believe that there are any uncertain tax positions that require recognition of a tax liability.
	Net Income (Loss) Per Unit: Net income (loss) per unit is calculated in accordance with investment company guidance. See Note 3, “Financial Highlights.”
	In May 2015, Financial Accounting Standards Board issued ASU 2015-07 “Disclosures for Investments in Certain Entities That Calculate Net Asset Value per Share (or Its Equivalent)” which relates to disclosures for investments that calculate net asset value per share (potentially funds of fund structures). The ASU requires investments for which the practical expedient is used to measure fair value at NAV be removed from the fair value hierarchy. Instead, an entity is required to include those investments as a reconciling line item so that the total fair value amount of investments in the disclosure is consistent with the amount on the balance sheet. Further, the ASU requires entities to provide the disclosures in Accounting Standards Codification 820-10-50-6A only for investments for which they elect to use the NAV practical expedient to determine fair value. The standard is effective for public business entities for fiscal years beginning after December 15, 2015, early adoption is permitted. The General Partner is currently evaluating the impact that the new pronouncement would have on the Partnership’s financial statements.
	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 for the year ended December 31, 2014.
	The Master’s Statements of Financial Condition and Condensed Schedules of Investments as of March 31, 2015 and December 31, 2014 and Statements of Income and Expenses and Changes in Partners’ Capital for the three months ended March 31, 2015 and 2014 are presented below:
	CMF Campbell Master Fund L.P.
	Statements of Financial Condition
			(Unaudited)			December 31,
			March 31,			2014
			2015
	Assets:
	Equity in trading account:
	Cash		$	26,698,294		$	25,309,115
	Cash margin			4,312,761			3,907,451
	Net unrealized appreciation on open futures contracts			444,196			871,621
	Net unrealized appreciation on open forward contracts			688,725			649,816
	Total assets		$	32,143,976		$	30,738,003
	Liabilities and Partners’ Capital:
	Liabilities:
	Accrued expenses:
	Clearing fees due to MS&Co.			—			2,220
	Professional fees			66,562			35,131
	Total liabilities			66,562			37,351
	Partners’ Capital:
	General Partner, 0.0000 units outstanding at March 31, 2015 and December 31, 2014			—			—
	Limited Partner, 14,286.7062 and 15,031.5695 units outstanding at March 31, 2015 and December 31, 2014, respectively			32,077,414			30,700,652
	Total liabilities and partners’ capital		$	32,143,976		$	30,738,003
	Net asset value per unit		$	2,245.26		$	2,042.41
	CMF Campbell Master Fund L.P.
	Condensed Schedule of Investments
	31-Mar-15
	(Unaudited)
			Notional ($)/ Number			Fair Value			% of Partners’
			of Contracts						Capital
	Futures Contracts Purchased
	Grains			14		$	(234	)		(0.00	)*%
	Indices			342			(33,902	)		(0.11	)
	Interest Rates Non-U.S.			729			174,527			0.54
	Interest Rates U.S.			184			128,300			0.4
	Livestock			10			5,900			0.02
	Metals			3			(6,280	)		(0.02	)
	Softs			3			(1,360	)		(0.00	)*
	Total futures contracts purchased						266,951			0.83
	Futures Contracts Sold
	Energy			92			74,358			0.23
	Grains			166			(12,725	)		(0.04	)
	Indices			3			(75	)		(0.00	)*
	Interest Rates Non-U.S.			65			(3,733	)		(0.01	)
	Interest Rates U.S.			100			(73,140	)		(0.23	)
	Metals			16			19,305			0.06
	Softs			63			173,255			0.54
	Total futures contracts sold						177,245			0.55
	Net unrealized appreciation on open futures contracts						444,196			1.38
Unrealized Appreciation on Open Forward Contracts
Currencies		$	109,484,734			1,698,574			5.3
Metals			131			369,468			1.15
Total unrealized appreciation on open forward contracts						2,068,042			6.45
Unrealized Depreciation on Open Forward Contracts
Currencies		$	75,511,779			(945,611	)		(2.95	)
Metals			192			(433,706	)		(1.35	)
Total unrealized depreciation on open forward contracts						(1,379,317	)		(4.30	)
Net unrealized appreciation on open forward contracts						688,725			2.15
Net fair value					$	1,132,921			3.53	%
*	Due to rounding
CMF Campbell Master Fund L.P.
Condensed Schedule of Investments
December 31, 2014
		Notional ($)/Number			Fair Value			% of Partners’
		of Contracts						Capital
Futures Contracts Purchased
Energy			1		$	(3,125	)		(0.01	)%
Grains			28			(49,997	)		(0.16	)
Indices			110			2,926			0.01
Interest Rates U.S.			94			64,630			0.21
Interest Rates Non-U.S.			904			657,848			2.14
Livestock			10			(8,130	)		(0.03	)
Metals			2			(3,187	)		(0.01	)
Softs			2			(1,845	)		(0.00	)*
Total futures contracts purchased						659,120			2.15
Futures Contracts Sold
Energy			68			152,712			0.49
Grains			43			14,237			0.05
Indices			6			(1,588	)		(0.00	)*
Interest Rates U.S.			73			11,813			0.03
Interest Rates Non-U.S.			42			(7,538	)		(0.02	)
Metals			15			14,305			0.05
Softs			69			28,560			0.09
Total futures contracts sold						212,501			0.69
Net unrealized appreciation on open futures contracts						871,621			2.84
Unrealized Appreciation on Open Forward Contracts
Currencies		$	110,605,414			1,663,757			5.42
Metals			82			130,794			0.43
Total unrealized appreciation on open forward contracts						1,794,551			5.85
Unrealized Depreciation on Open Forward Contracts
Currencies		$	78,295,483			(1,057,999	)		(3.45	)
Metals			60			(86,736	)		(0.28	)
Total unrealized depreciation on open forward contracts						(1,144,735	)		(3.73	)
Net unrealized appreciation on open forward contracts						649,816			2.12
Total fair value					$	1,521,437			4.96	%
*	Due to rounding
CMF Campbell Master Fund L.P.
Statements of Income and Expenses and Changes in Partners’ Capital
(Unaudited)
		Three Months Ended
		March 31,
		2015			2014
Investment Income:
Interest income		$	541		$	1,896
Expenses:
Clearing fees			34,788			59,138
Professional fees			31,483			20,128
Total expenses			66,271			79,266
Net investment income (loss)			(65,730	)		(77,370	)
Trading Results:
Net gains (losses) on trading of commodity interests:
Net realized gains (losses) on closed contracts			3,432,478			(2,513,725	)
Change in net unrealized gains (losses) on open contracts			(388,516	)		(579,425	)
Total trading results			3,043,962			(3,093,150	)
Net income (loss)			2,978,232			(3,170,520	)
Subscriptions — Limited Partner			383,092			3,201,764
Redemptions — Limited Partner			(1,984,021	)		(1,999,902	)
Distribution of interest income to feeder fund			(541	)		(1,896	)
Net increase (decrease) in Partners’ Capital			1,376,762			(1,970,554	)
Partners’ Capital, beginning of period			30,700,652			30,746,822
Partners’ Capital, end of period		$	32,077,414		$	28,776,268
Net asset value per unit (14,286.7062 and 19,769.1860 units outstanding at March 31, 2015 and 2014, respectively)		$	2,245.26		$	1,455.61
Net income (loss) per unit*		$	202.88		$	(160.73	)
Weighted average units outstanding			14,893.08			20,110.42
*	Represents the change in net asset value per unit during the period before distribution of interest income to feeder fund.

Financial_Highlights

Financial Highlights	3 Months Ended
	Mar. 31, 2015
Text Block [Abstract]
Financial Highlights	3	Financial Highlights:
	Financial highlights for the limited partner class as a whole for the three months ended March 31, 2015 and 2014 were as follows:
			Three Months Ended
			March 31,
			2015			2014
	Net realized and unrealized gains (losses) allocated from Master		$	169.56		$	(135.58	)
	Interest income allocated from Master			0.03			0.08
	Expenses		$	(31.10	)		(33.88	)
	Increase (decrease) for the period			138.49			(169.38	)
	Net asset value per unit, beginning of period			1,676.61			1,411.31
	Net asset value per unit, end of period		$	1,815.10		$	1,241.93
	In the financial highlights, the ongoing selling agent fees and clearing fees allocated from the Master per unit which were previously included in net realized and unrealized gains (losses) allocated from Master per unit and excluded from expenses per unit are now excluded from net realized and unrealized gains (losses) allocated from Master per unit and included in expenses per unit. This information was previously included as a footnote to the financial highlights table.
			Three Months Ended
			March 31,
			2015			2014
	Ratio to average net assets:***
	Net investment income (loss)****			(6.1	)%		(10.6	)%
	Operating expenses			6.1	%		10.7	%
	Incentive fees			0.3	%		—	%
	Total expenses			6.4	%		10.7	%
	Total return:
	Total return before incentive fees			8.6	%		(12.0	)%
	Incentive fees			(0.3	)%		—	%
	Total return after incentive fees			8.3	%		(12.0	)%
	***	Annualized (other than incentive fees).
	****	Interest income allocated from the Master less total expenses. Does not reflect the effects of incentive fees.
	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 net assets of the Partnership and includes the income and expenses allocated from the Master.
	Financial Highlights of the Master:
			Three Months Ended
			March 31,
			2015			2014
	Net realized and unrealized gains (losses)		$	207.38		$	(156.80	)
	Interest income			0.03			0.09
	Expenses			(4.53	)		(4.02	)
	Increase (decrease) for the period			202.88			(160.73	)
	Distribution of interest income to feeder fund			(0.03	)		(0.09	)
	Net asset value per unit, beginning of period			2,042.41			1,616.43
	Net asset value per unit, end of period		$	2,245.26		$	1,455.61
	For the financial highlights of the Master Fund included herein, the clearing fees which were previously included in net realized and unrealized gains (losses) per unit and excluded from expenses per unit, are now excluded from net realized gains (losses) per unit and included in expenses per unit. This information was previously included as a footnote to the financial highlights table.
			Three Months Ended
			March 31,
			2015			2014
	Ratios to Average Net Assets:*
	Net investment income (loss)**			(0.8	)%		(1.0	)%
	Operating expenses			0.9	%		1.1	%
	Total return			9.9	%		(10.0	)%
	*	Annualized.
	**	Interest income less total expenses .

Trading_Activities

Trading Activities	3 Months Ended
	Mar. 31, 2015
Brokers and Dealers [Abstract]
Trading Activities	4	Trading Activities:
	The Partnership was formed for the purpose of trading contracts in a variety of commodity interests, including derivative financial instruments and derivative commodity instruments. The Partnership invests substantially all of its assets through a “master/feeder” structure. The Partnership’s pro-rata share of the results of the Master’s trading activities are shown on the Statements of Income and Expenses and Changes in Partners’ Capital.
	The customer agreement among the Partnership, the Master and MS&Co. gives, the Partnership and the Master, respectively, the legal right to net unrealized gains and losses on open futures and on open forward contracts. The Master nets, for financial reporting purposes, the unrealized gains and losses on open futures and on open forward contracts on the Statements of Financial Condition as the criteria under Accounting Standards Codification 210-20, “Balance Sheet,” have been met.
	Ongoing selling agent fees paid to Morgan Stanley Wealth Management were calculated as a percentage of the Partnership’s adjusted net asset value on the last day of each month and were affected by trading performance, subscriptions and redemptions. Trading and transaction fees are based on the number of trades executed by the Advisor. All trading, exchange, clearing, user, give-up, floor brokerage and National Futures Association fees (collectively, the “clearing fees”) paid to MS&Co. are borne by the Master and allocated to the Partnership.
	All of the commodity interests owned by the Master are held for trading purposes. The monthly average number of futures contracts traded during the three months ended March 31, 2015 and 2014 were 1,604 and 1,907, respectively. The monthly average number of metals forward contracts traded during the three months ended March 31, 2015 and 2014 were 412 and 656, respectively. The monthly average notional values of currency forward contracts held during the three months ended March 31, 2015 and 2014 were $351,428,637 and $611,112,913, 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 arrangements or similar agreements as of March 31, 2015 and December 31, 2014, respectively.
	31-Mar-15		Gross Amounts			Gross Amounts			Net Amounts		Gross Amounts Not Offset in the
			Recognized			Offset in the			Presented in the		Statements of Financial Condition
						Statements of			Statements of
						Financial			Financial
						Condition			Condition		Financial		Collateral		Net Amount
											Instruments		(Received)/Pledged*
	Assets
	Futures		$	830,668		$	(386,472	)	$	444,196	$	—	$	—	$	444,196
	Forwards			2,068,042			(1,379,317	)		688,725		—		—		688,725
	Total Assets		$	2,898,710		$	(1,765,789	)	$	1,132,921	$	—	$	—	$	1,132,921
	Liabilities
	Futures		$	(386,472	)	$	386,472		$	—	$	—	$	—	$	—
	Forwards			(1,379,317	)		1,379,317			—		—		—		—
	Total Liabilities		$	(1,765,789	)	$	1,765,789		$	—	$	—	$	—	$	—
	Net fair value														$	1,132,921	*
	31-Dec-14		Gross Amounts			Gross Amounts			Net Amounts		Gross Amounts Not Offset in the
			Recognized			Offset in the			Presented in the		Statements of Financial Condition
						Statements of			Statements of
						Financial			Financial
						Condition			Condition		Financial		Collateral		Net Amount
											Instruments		(Received)/Pledged*
	Assets
	Futures		$	1,020,950		$	(149,329	)	$	871,621	$	—	$	—	$	871,621
	Forwards			1,794,551			(1,144,735	)		649,816		—		—		649,816
	Total Assets		$	2,815,501		$	(1,294,064	)	$	1,521,437	$	—	$	—	$	1,521,437
	Liabilities
	Futures		$	(149,329	)	$	149,329		$	—	$	—	$	—	$	—
	Forwards			(1,144,735	)		1,144,735			—		—		—		—
	Total Liabilities		$	(1,294,064	)	$	1,294,064		$	—	$	—	$	—	$	—
	Net fair value														$	1,521,437	*
	*	In the event of default by the Master, MS&Co., the sole counterparty to the Master’s derivative contracts, has the right to offset the Master’s obligation with the cash held by the Master, thereby minimizing the counterparty’s risk of loss. There is no collateral posted by MS&Co. and as such, in the event of a default by MS&Co., the Master is exposed to the amount shown on the Statements of Financial Condition.
	The following tables indicate the gross fair values of derivative instruments of futures and forward contracts as separate assets and liabilities as of March 31, 2015 and December 31, 2014.
	Assets		March 31, 2015
	Futures Contracts
	Energy		$	84,500
	Grains			29,162
	Indices			156,516
	Interest Rates Non-U.S.			226,285
	Interest Rates U.S.			132,207
	Livestock			6,650
	Metals			22,093
	Softs			173,255
	Total unrealized appreciation on open futures contracts		$	830,668
	Liabilities
	Futures Contracts
	Energy		$	(10,142	)
	Grains			(42,121	)
	Indices			(190,493	)
	Interest Rates Non-U.S.			(55,491	)
	Interest Rates U.S.			(77,047	)
	Livestock			(750	)
	Metals			(9,068	)
	Softs			(1,360	)
	Total unrealized depreciation on open futures contracts		$	(386,472	)
	Net unrealized appreciation on open futures contracts		$	444,196	*
	Assets
	Forward Contracts
	Currencies		$	1,698,574
Metals			369,468
Total unrealized appreciation on open forward contracts		$	2,068,042
Liabilities
Forward Contracts
Currencies		$	(945,611	)
Metals			(433,706	)
Total unrealized depreciation on open forward contracts		$	(1,379,317	)
Net unrealized appreciation on open forward contracts		$	688,725	**
*	This amount is included in “Net unrealized appreciation on open futures contracts” on the Master’s Statements of Financial Condition.
**	This amount is included in “Net unrealized appreciation on open forward contracts” on the Master’s Statements of Financial Condition.
Assets		December 31, 2014
Futures Contracts
Energy		$	153,320
Grains			15,187
Indices			59,941
Interest Rates Non-U.S.			660,385
Interest Rates U.S.			86,643
Livestock			1,690
Metals			14,305
Softs			29,479
Total unrealized appreciation on open futures contracts		$	1,020,950
Liabilities
Futures Contracts
Energy		$	(3,733	)
Grains			(50,947	)
Indices			(58,603	)
Interest Rates Non-U.S.			(10,075	)
Interest Rates U.S.			(10,200	)
Livestock			(9,820	)
Metals			(3,187	)
Softs			(2,764	)
Total unrealized depreciation on open futures contracts		$	(149,329	)
Net unrealized appreciation on open futures contracts		$	871,621	*
Assets
Forward Contracts
Currencies		$	1,663,757
Metals			130,794
Total unrealized appreciation on open forward contracts		$	1,794,551
Liabilities
Forward Contracts
Currencies		$	(1,057,999	)
Metals			(86,736	)
Total unrealized depreciation on open forward contracts		$	(1,144,735	)
Net unrealized appreciation on open forward contracts		$	649,816	**
*	This amount is included in “Net unrealized appreciation on open futures contracts” on the Master’s Statements of Financial Condition.
**	This amount is included in “Net unrealized appreciation on open forward contracts” on the Master’s Statements of Financial Condition.
The following table indicates the trading gains and losses, by market sector, on derivative instruments for the three months ended March 31, 2015 and 2014.
		Three Months Ended
		March  31,
Sector		2015			2014
Currencies		$	937,463		$	(509,562	)
Energy			36,824			(638,380	)
Grains			(48,323	)		62,251
Indices			880,997			(1,417,728	)
Interest Rates U.S.			264,010			(73,690	)
Interest Rates Non-U.S.			828,901			161,043
Livestock			(38,830	)		50,900
Metals			(109,772	)		(654,838	)
Softs			292,692			(73,146	)
Total		$	3,043,962	***	$	(3,093,150	)***
***	This amount is included in “Total trading results” on the Master’s Statements of Income and Expenses and Changes in Partners’ Capital.

Fair_Value_Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2015
Fair Value Disclosures [Abstract]
Fair Value Measurements	5	Fair Value Measurements:
	Master’s Fair Value Measurements. Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date under current market conditions. The fair value hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1) and the lowest priority to fair values derived from unobservable inputs (Level 3). The level in the fair value hierarchy within which the fair value measurement in its entirety falls shall be determined based on the lowest level input that is significant to the fair value measurement in its entirety.
	The Master considers prices for exchange-traded commodity futures, forward, swap and option contracts to be based on unadjusted quoted prices in active markets for identical assets and liabilities (Level 1). The values of non-exchange-traded forward, swap and certain option contracts for which market quotations are not readily available are priced by broker-dealers who derive fair values for those assets and liabilities from observable inputs (Level 2). As of and for the periods ended March 31, 2015 and December 31, 2014, the Master did not hold any derivative instruments that were priced at fair value using unobservable inputs through the application of the General Partner’s assumptions and internal valuation pricing models (Level 3). Transfers between levels are recognized at the end of the reporting period. During the three months ended March 31, 2015 and for the year ended December 31, 2014, there were no transfers of assets or liabilities between Level 1 and Level 2.
			March 31,  2015		Quoted Prices in		Significant Other		Significant
			Total		Active Markets		Observable Inputs		Unobservable
					for Identical		(Level 2)		Inputs (Level 3)
					Assets and
					Liabilities
					(Level 1)
	Assets
	Futures		$	830,668	$	830,668	$	—	$	—
	Forwards			2,068,042		369,468		1,698,574		—
	Total assets		$	2,898,710	$	1,200,136	$	1,698,574	$	—
	Liabilities
	Futures		$	386,472	$	386,472	$	—	$	—
	Forwards			1,379,317		433,706		945,611		—
	Total liabilities		$	1,765,789	$	820,178	$	945,611	$	—
	Net fair value		$	1,132,921	$	379,958	$	752,963	$	—
			December 31,  2014		Quoted Prices in		Significant Other		Significant
			Total		Active Markets		Observable Inputs		Unobservable
					for Identical		(Level 2)		Inputs (Level 3)
					Assets and
					Liabilities
					(Level 1)
	Assets
	Futures		$	1,020,950	$	1,020,950	$	—	$	—
	Forwards			1,794,551		130,794		1,663,757		—
	Total assets		$	2,815,501	$	1,151,744	$	1,663,757	$	—
	Liabilities
	Futures		$	149,329	$	149,329	$	—	$	—
	Forwards			1,144,735		86,736		1,057,999		—
	Total liabilities		$	1,294,064	$	236,065	$	1,057,999	$	—
	Net fair value		$	1,521,437	$	915,679	$	605,758	$	—

Financial_Instrument_Risks

Financial Instrument Risks	3 Months Ended
	Mar. 31, 2015
Investments, All Other Investments [Abstract]
Financial Instrument Risks	6	Financial Instrument Risks:
	In the normal course of business, the Partnership, indirectly through its investment in the Master, is party to financial instruments with off-balance-sheet risk, including derivative financial instruments and derivative commodity instruments. These financial instruments may include forwards, futures, options and swaps, whose values are based upon an underlying asset, index, or reference rate, and generally represent future commitments to exchange currencies or cash balances, or to purchase or sell other financial instruments at specific terms at specified future dates, or, in the case of derivative commodity instruments, to have a reasonable possibility to be settled in cash, through physical delivery or with another financial instrument. These instruments may be traded on an exchange, a swap execution facility or over-the-counter (“OTC”). Exchange-traded instruments include futures and certain standardized forward, options and swap contracts. Certain swap contracts may also be traded on a swap execution facility or OTC. OTC contracts are negotiated between contracting parties and also include certain forward and option contracts. Specific market movements of commodities or futures contracts underlying an option cannot be accurately predicted. The purchaser of an option may lose the entire premium paid for the option. The writer or seller of an option has unlimited risk. Each of these instruments is subject to various risks similar to those related to the underlying financial instruments including market and credit risk. In general, the risks associated with OTC contracts are greater than those associated with exchange-traded instruments because of the greater risk of default by the counterparty to an OTC contract. The General Partner estimates that at any given time approximately 0.0% to 46.6% of the Partnership’s/Master’s contracts are traded OTC.
	The Master trades futures contracts. A futures contract is a firm commitment to buy or sell a specified quantity of investments, currency or a standardized amount of a deliverable grade commodity, at a specified price on a specified future date, unless the contract is closed before the delivery date or if the delivery quantity is something where physical delivery cannot occur (such as the S&P 500 Index), whereby such contract is settled in cash. Payments (“variation margin”) may be made or received by the Master on each business day, depending on the daily fluctuations in the value of the underlying contracts, and are recorded as unrealized gains or losses by the Master. When the contract is closed, the Master records a realized gain or loss equal to the difference between the value of the contract at the time it was opened and the value at the time it was closed. Transactions in futures contracts require participants to make both initial margin deposits of cash or other assets and variation margin deposits, through the futures broker, directly with the exchange on which the contracts are traded. Net realized gains (losses) and changes in net unrealized gains (losses) on futures contracts are included in the Statements of Income and Expenses and Changes in Partners’ Capital.
	Forward foreign currency contracts are those contracts where the Master agrees to receive or deliver a fixed quantity of foreign currency for an agreed-upon price on an agreed-upon future date. Forward foreign currency contracts are valued daily, and the Master’s net equity therein, representing unrealized gain or loss on the contracts as measured by the difference between the forward foreign exchange rates at the dates of entry into the contracts and the forward rates at the reporting date, is included in the Statements of Financial Condition. Net realized gains (losses) and changes in net unrealized gains (losses) on forward foreign currency contracts are recognized in the period in which the contract is closed or the changes occur, respectively, and are included in the Statements of Income and Expenses and Changes in Partners’ Capital.
	The Master does not isolate that portion of the results of operations arising from the effect of changes in foreign exchange rates on investments from fluctuations from changes in market prices of investments held. Such fluctuations are included in total trading results in the Statements of Income and Expenses and Changes in Partners’ Capital.
	Metal contracts traded on the London Metals Exchange (“LME”) represent a firm commitment to buy or sell a specified quantity of aluminum, copper, lead, nickel, tin or zinc. LME contracts traded by the Master are cash settled based on prompt dates published by the LME. Payments (“variation margin”) may be made or received by the Master on each business day, depending on the daily fluctuations in the value of the underlying contracts, and are recorded as unrealized gains or losses by the Master. A contract is considered offset when all long positions have been matched with a like number of short positions settling on the same prompt date. When the contract is closed at the prompt date, the Master records a realized gain or loss equal to the difference between the value of the contract at the time it was opened and the value at the time it was closed. Transactions in LME contracts require participants to make both initial margin deposits of cash or other assets and variation margin deposits, through the broker, directly with the LME. Net realized gains (losses) and changes in net unrealized gains (losses) on metal contracts are included in the Statements of Income and Expenses and Changes in Partners’ Capital.
	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 result of the organization of the Partnership as a limited partnership under New York law.
	Market risk is the potential for changes in the value of the financial instruments traded by the Partnership/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 Partnership/Master is exposed to a market risk equal to the value of futures and forward contracts purchased 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. or an MS&Co. affiliate is the sole counterparty or broker 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 control 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, forwards and options positions 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/Master’s business, these instruments may not be held to maturity.

Subsequent_Events

Subsequent Events	3 Months Ended
	Mar. 31, 2015
Subsequent Events [Abstract]
Subsequent Events	7	Subsequent Events
	The General Partner evaluates events that occur after the balance sheet date but before financial statements are issued. The General Partner has assessed the subsequent events through the date of issuance and determined that there were no subsequent events requiring adjustment of, or disclosure in, the financial statements.

Basis_of_Presentation_and_Summ1

Basis of Presentation and Summary of Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2015
Accounting Policies [Abstract]
Partnership's Investments	Partnership’s Investment: The Partnership carries its investment in the Master at fair value based on the Master’s net asset value per unit as calculated by the Master. The valuation of the Master’s investments including the classification within the fair value hierarchy of the investments held by the Master are described in Note 4.
Master's Investments	Master’s Investments: Fair value of exchange-traded futures, options and forward contracts is determined by the various futures 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 foreign currency option contracts is calculated by applying an industry standard model application for options valuation of foreign currency options, using as inputs the spot prices, interest rates, and option implied volatilities quoted as of approximately 3:00 P.M. (E.T.) on the last business day of the reporting period.
	All commodity interests of the Master (including derivative financial instruments and derivative commodity instruments) are held for trading purposes. The commodity interests are recorded on the trade date and open contracts are recorded at fair value at the measurement date. Investments in commodity interests denominated in foreign currencies are translated into U.S. dollars at the exchange rates prevailing at the measurement date. Gains or losses are realized when contracts are liquidated. Unrealized gains or losses on open contracts are included as a component of equity in trading account on the Master’s Statements of Financial Condition. Net realized gains or losses and any change in net unrealized gains or losses from the preceding period are reported on the Master’s Statements of Income and Expenses and Changes in Partners’ Capital.
Investment Company Status	Investment Company Status: Effective January 1, 2014, the Partnership adopted, Accounting Standards Update (“ASU”) 2013-08, “Financial Services — Investments Companies (Topic 946): Amendments to the Scope, Measurement and Disclosure Requirements” and based on General Partner’s assessment, the Partnership has been deemed to be an investment company since inception.
Income Taxes	Income Taxes: Income taxes have not been provided as each partner is individually liable for the taxes, if any, on its share of the Partnership’s income and expenses. GAAP provides guidance for how uncertain tax positions should be recognized, measured, presented and disclosed in the financial statements and requires the evaluation of tax positions taken or expected to be taken in the course of preparing the Partnership’s financial statements to determine whether the tax positions are “more-likely-than-not” to be sustained by the applicable tax authority. Tax positions with respect to tax at the Partnership level not deemed to meet the “more-likely-than-not” threshold would be recorded as a tax benefit or expense in the current year. The General Partner concluded that no provision for income tax is required in the Partnership’s financial statements.
	The Partnership files U.S. federal and various state and local tax returns. No income tax returns are currently under examination. The 2011 through 2014 tax years remain subject to examination by U.S. federal and most state tax authorities. The General Partner does not believe that there are any uncertain tax positions that require recognition of a tax liability.
Net Income (Loss) per unit	Net Income (Loss) Per Unit: Net income (loss) per unit is calculated in accordance with investment company guidance. See Note 3, “Financial Highlights.”
Recent Accounting Pronouncement	In May 2015, Financial Accounting Standards Board issued ASU 2015-07 “Disclosures for Investments in Certain Entities That Calculate Net Asset Value per Share (or Its Equivalent)” which relates to disclosures for investments that calculate net asset value per share (potentially funds of fund structures). The ASU requires investments for which the practical expedient is used to measure fair value at NAV be removed from the fair value hierarchy. Instead, an entity is required to include those investments as a reconciling line item so that the total fair value amount of investments in the disclosure is consistent with the amount on the balance sheet. Further, the ASU requires entities to provide the disclosures in Accounting Standards Codification 820-10-50-6A only for investments for which they elect to use the NAV practical expedient to determine fair value. The standard is effective for public business entities for fiscal years beginning after December 15, 2015, early adoption is permitted. The General Partner is currently evaluating the impact that the new pronouncement would have on the Partnership’s financial statements.

Basis_of_Presentation_and_Summ2

Basis of Presentation and Summary of Significant Accounting Policies (Tables)	3 Months Ended
	Mar. 31, 2015
Accounting Policies [Abstract]
Statements of Financial Condition	CMF Campbell Master Fund L.P.
	Statements of Financial Condition
			(Unaudited)			December 31,
			March 31,			2014
			2015
	Assets:
	Equity in trading account:
	Cash		$	26,698,294		$	25,309,115
	Cash margin			4,312,761			3,907,451
	Net unrealized appreciation on open futures contracts			444,196			871,621
	Net unrealized appreciation on open forward contracts			688,725			649,816
	Total assets		$	32,143,976		$	30,738,003
	Liabilities and Partners’ Capital:
	Liabilities:
	Accrued expenses:
	Clearing fees due to MS&Co.			—			2,220
	Professional fees			66,562			35,131
	Total liabilities			66,562			37,351
	Partners’ Capital:
	General Partner, 0.0000 units outstanding at March 31, 2015 and December 31, 2014			—			—
	Limited Partner, 14,286.7062 and 15,031.5695 units outstanding at March 31, 2015 and December 31, 2014, respectively			32,077,414			30,700,652
	Total liabilities and partners’ capital		$	32,143,976		$	30,738,003
	Net asset value per unit		$	2,245.26		$	2,042.41
Condensed Schedule of Investments	CMF Campbell Master Fund L.P.
	Condensed Schedule of Investments
	31-Mar-15
	(Unaudited)
			Notional ($)/ Number			Fair Value			% of Partners’
			of Contracts						Capital
	Futures Contracts Purchased
	Grains			14		$	(234	)		(0.00	)*%
	Indices			342			(33,902	)		(0.11	)
	Interest Rates Non-U.S.			729			174,527			0.54
	Interest Rates U.S.			184			128,300			0.4
	Livestock			10			5,900			0.02
	Metals			3			(6,280	)		(0.02	)
	Softs			3			(1,360	)		(0.00	)*
	Total futures contracts purchased						266,951			0.83
	Futures Contracts Sold
	Energy			92			74,358			0.23
	Grains			166			(12,725	)		(0.04	)
	Indices			3			(75	)		(0.00	)*
	Interest Rates Non-U.S.			65			(3,733	)		(0.01	)
	Interest Rates U.S.			100			(73,140	)		(0.23	)
	Metals			16			19,305			0.06
	Softs			63			173,255			0.54
	Total futures contracts sold						177,245			0.55
	Net unrealized appreciation on open futures contracts						444,196			1.38
	Unrealized Appreciation on Open Forward Contracts
	Currencies		$	109,484,734			1,698,574			5.3
	Metals			131			369,468			1.15
	Total unrealized appreciation on open forward contracts						2,068,042			6.45
	Unrealized Depreciation on Open Forward Contracts
	Currencies		$	75,511,779			(945,611	)		(2.95	)
	Metals			192			(433,706	)		(1.35	)
	Total unrealized depreciation on open forward contracts						(1,379,317	)		(4.30	)
	Net unrealized appreciation on open forward contracts						688,725			2.15
	Net fair value					$	1,132,921			3.53	%
	*	Due to rounding
	CMF Campbell Master Fund L.P.
	Condensed Schedule of Investments
	December 31, 2014
			Notional ($)/Number			Fair Value			% of Partners’
			of Contracts						Capital
	Futures Contracts Purchased
	Energy			1		$	(3,125	)		(0.01	)%
	Grains			28			(49,997	)		(0.16	)
	Indices			110			2,926			0.01
	Interest Rates U.S.			94			64,630			0.21
	Interest Rates Non-U.S.			904			657,848			2.14
	Livestock			10			(8,130	)		(0.03	)
	Metals			2			(3,187	)		(0.01	)
	Softs			2			(1,845	)		(0.00	)*
	Total futures contracts purchased						659,120			2.15
	Futures Contracts Sold
	Energy			68			152,712			0.49
	Grains			43			14,237			0.05
	Indices			6			(1,588	)		(0.00	)*
	Interest Rates U.S.			73			11,813			0.03
	Interest Rates Non-U.S.			42			(7,538	)		(0.02	)
	Metals			15			14,305			0.05
	Softs			69			28,560			0.09
	Total futures contracts sold						212,501			0.69
	Net unrealized appreciation on open futures contracts						871,621			2.84
	Unrealized Appreciation on Open Forward Contracts
	Currencies		$	110,605,414			1,663,757			5.42
	Metals			82			130,794			0.43
Total unrealized appreciation on open forward contracts						1,794,551			5.85
Unrealized Depreciation on Open Forward Contracts
Currencies		$	78,295,483			(1,057,999	)		(3.45	)
Metals			60			(86,736	)		(0.28	)
Total unrealized depreciation on open forward contracts						(1,144,735	)		(3.73	)
Net unrealized appreciation on open forward contracts						649,816			2.12
Total fair value					$	1,521,437			4.96	%
*	Due to rounding
Statements of Income and Expenses and Changes in Partners' Capital	CMF Campbell Master Fund L.P.
	Statements of Income and Expenses and Changes in Partners’ Capital
	(Unaudited)
			Three Months Ended
			March 31,
			2015			2014
	Investment Income:
	Interest income		$	541		$	1,896
	Expenses:
	Clearing fees			34,788			59,138
	Professional fees			31,483			20,128
	Total expenses			66,271			79,266
	Net investment income (loss)			(65,730	)		(77,370	)
	Trading Results:
	Net gains (losses) on trading of commodity interests:
	Net realized gains (losses) on closed contracts			3,432,478			(2,513,725	)
	Change in net unrealized gains (losses) on open contracts			(388,516	)		(579,425	)
	Total trading results			3,043,962			(3,093,150	)
	Net income (loss)			2,978,232			(3,170,520	)
	Subscriptions — Limited Partner			383,092			3,201,764
	Redemptions — Limited Partner			(1,984,021	)		(1,999,902	)
	Distribution of interest income to feeder fund			(541	)		(1,896	)
	Net increase (decrease) in Partners’ Capital			1,376,762			(1,970,554	)
	Partners’ Capital, beginning of period			30,700,652			30,746,822
	Partners’ Capital, end of period		$	32,077,414		$	28,776,268
	Net asset value per unit (14,286.7062 and 19,769.1860 units outstanding at March 31, 2015 and 2014, respectively)		$	2,245.26		$	1,455.61
	Net income (loss) per unit*		$	202.88		$	(160.73	)
	Weighted average units outstanding			14,893.08			20,110.42
	*	Represents the change in net asset value per unit during the period before distribution of interest income to feeder fund.

Financial_Highlights_Tables

Financial Highlights (Tables)	3 Months Ended
	Mar. 31, 2015
Text Block [Abstract]
Changes in Net Asset Value Per Unit	Financial highlights for the limited partner class as a whole for the three months ended March 31, 2015 and 2014 were as follows:
			Three Months Ended
			March 31,
			2015			2014
	Net realized and unrealized gains (losses) allocated from Master		$	169.56		$	(135.58	)
	Interest income allocated from Master			0.03			0.08
	Expenses		$	(31.10	)		(33.88	)
	Increase (decrease) for the period			138.49			(169.38	)
	Net asset value per unit, beginning of period			1,676.61			1,411.31
	Net asset value per unit, end of period		$	1,815.10		$	1,241.93
	In the financial highlights, the ongoing selling agent fees and clearing fees allocated from the Master per unit which were previously included in net realized and unrealized gains (losses) allocated from Master per unit and excluded from expenses per unit are now excluded from net realized and unrealized gains (losses) allocated from Master per unit and included in expenses per unit. This information was previously included as a footnote to the financial highlights table.
			Three Months Ended
			March 31,
			2015			2014
	Ratio to average net assets:***
	Net investment income (loss)****			(6.1	)%		(10.6	)%
	Operating expenses			6.1	%		10.7	%
	Incentive fees			0.3	%		—	%
	Total expenses			6.4	%		10.7	%
	Total return:
	Total return before incentive fees			8.6	%		(12.0	)%
	Incentive fees			(0.3	)%		—	%
	Total return after incentive fees			8.3	%		(12.0	)%
	***	Annualized (other than incentive fees).
	****	Interest income allocated from the Master less total expenses. Does not reflect the effects of incentive fees.
	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 net assets of the Partnership and includes the income and expenses allocated from the Master.
	Financial Highlights of the Master:
			Three Months Ended
			March 31,
			2015			2014
	Net realized and unrealized gains (losses)		$	207.38		$	(156.80	)
	Interest income			0.03			0.09
	Expenses			(4.53	)		(4.02	)
	Increase (decrease) for the period			202.88			(160.73	)
	Distribution of interest income to feeder fund			(0.03	)		(0.09	)
	Net asset value per unit, beginning of period			2,042.41			1,616.43
	Net asset value per unit, end of period		$	2,245.26		$	1,455.61
	For the financial highlights of the Master Fund included herein, the clearing fees which were previously included in net realized and unrealized gains (losses) per unit and excluded from expenses per unit, are now excluded from net realized gains (losses) per unit and included in expenses per unit. This information was previously included as a footnote to the financial highlights table.
			Three Months Ended
			March 31,
			2015			2014
	Ratios to Average Net Assets:*
	Net investment income (loss)**			(0.8	)%		(1.0	)%
	Operating expenses			0.9	%		1.1	%
	Total return			9.9	%		(10.0	)%
	*	Annualized.
	**	Interest income less total expenses .

Trading_Activities_Tables

Trading Activities (Tables)	3 Months Ended
	Mar. 31, 2015
Brokers and Dealers [Abstract]
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 arrangements or similar agreements as of March 31, 2015 and December 31, 2014, respectively.
	31-Mar-15		Gross Amounts			Gross Amounts			Net Amounts		Gross Amounts Not Offset in the
			Recognized			Offset in the			Presented in the		Statements of Financial Condition
						Statements of			Statements of
						Financial			Financial
						Condition			Condition		Financial		Collateral		Net Amount
											Instruments		(Received)/Pledged*
	Assets
	Futures		$	830,668		$	(386,472	)	$	444,196	$	—	$	—	$	444,196
	Forwards			2,068,042			(1,379,317	)		688,725		—		—		688,725
	Total Assets		$	2,898,710		$	(1,765,789	)	$	1,132,921	$	—	$	—	$	1,132,921
	Liabilities
	Futures		$	(386,472	)	$	386,472		$	—	$	—	$	—	$	—
	Forwards			(1,379,317	)		1,379,317			—		—		—		—
	Total Liabilities		$	(1,765,789	)	$	1,765,789		$	—	$	—	$	—	$	—
	Net fair value														$	1,132,921	*
	31-Dec-14		Gross Amounts			Gross Amounts			Net Amounts		Gross Amounts Not Offset in the
			Recognized			Offset in the			Presented in the		Statements of Financial Condition
						Statements of			Statements of
						Financial			Financial
						Condition			Condition		Financial		Collateral		Net Amount
											Instruments		(Received)/Pledged*
	Assets
	Futures		$	1,020,950		$	(149,329	)	$	871,621	$	—	$	—	$	871,621
	Forwards			1,794,551			(1,144,735	)		649,816		—		—		649,816
	Total Assets		$	2,815,501		$	(1,294,064	)	$	1,521,437	$	—	$	—	$	1,521,437
	Liabilities
	Futures		$	(149,329	)	$	149,329		$	—	$	—	$	—	$	—
	Forwards			(1,144,735	)		1,144,735			—		—		—		—
	Total Liabilities		$	(1,294,064	)	$	1,294,064		$	—	$	—	$	—	$	—
	Net fair value														$	1,521,437	*
	*	In the event of default by the Master, MS&Co., the sole counterparty to the Master’s derivative contracts, has the right to offset the Master’s obligation with the cash held by the Master, thereby minimizing the counterparty’s risk of loss. There is no collateral posted by MS&Co. and as such, in the event of a default by MS&Co., the Master is exposed to the amount shown on the Statements of Financial Condition.
Gross Fair Values of Derivative Instruments of Futures, Forward and Options Contracts as Separate Assets and Liabilities	The following tables indicate the gross fair values of derivative instruments of futures and forward contracts as separate assets and liabilities as of March 31, 2015 and December 31, 2014.
	Assets		March 31, 2015
	Futures Contracts
	Energy		$	84,500
	Grains			29,162
	Indices			156,516
	Interest Rates Non-U.S.			226,285
	Interest Rates U.S.			132,207
	Livestock			6,650
	Metals			22,093
	Softs			173,255
	Total unrealized appreciation on open futures contracts		$	830,668
	Liabilities
	Futures Contracts
	Energy		$	(10,142	)
	Grains			(42,121	)
	Indices			(190,493	)
	Interest Rates Non-U.S.			(55,491	)
	Interest Rates U.S.			(77,047	)
	Livestock			(750	)
	Metals			(9,068	)
	Softs			(1,360	)
	Total unrealized depreciation on open futures contracts		$	(386,472	)
	Net unrealized appreciation on open futures contracts		$	444,196	*
	Assets
	Forward Contracts
	Currencies		$	1,698,574
	Metals			369,468
	Total unrealized appreciation on open forward contracts		$	2,068,042
	Liabilities
	Forward Contracts
	Currencies		$	(945,611	)
	Metals			(433,706	)
	Total unrealized depreciation on open forward contracts		$	(1,379,317	)
	Net unrealized appreciation on open forward contracts		$	688,725	**
	*	This amount is included in “Net unrealized appreciation on open futures contracts” on the Master’s Statements of Financial Condition.
	**	This amount is included in “Net unrealized appreciation on open forward contracts” on the Master’s Statements of Financial Condition.
	Assets		December 31, 2014
	Futures Contracts
	Energy		$	153,320
	Grains			15,187
	Indices			59,941
	Interest Rates Non-U.S.			660,385
	Interest Rates U.S.			86,643
	Livestock			1,690
	Metals			14,305
	Softs			29,479
	Total unrealized appreciation on open futures contracts		$	1,020,950
	Liabilities
	Futures Contracts
	Energy		$	(3,733	)
	Grains			(50,947	)
	Indices			(58,603	)
	Interest Rates Non-U.S.			(10,075	)
	Interest Rates U.S.			(10,200	)
	Livestock			(9,820	)
	Metals			(3,187	)
	Softs			(2,764	)
	Total unrealized depreciation on open futures contracts		$	(149,329	)
	Net unrealized appreciation on open futures contracts		$	871,621	*
	Assets
	Forward Contracts
	Currencies		$	1,663,757
	Metals			130,794
Total unrealized appreciation on open forward contracts		$	1,794,551
Liabilities
Forward Contracts
Currencies		$	(1,057,999	)
Metals			(86,736	)
Total unrealized depreciation on open forward contracts		$	(1,144,735	)
Net unrealized appreciation on open forward contracts		$	649,816	**
*	This amount is included in “Net unrealized appreciation on open futures contracts” on the Master’s Statements of Financial Condition.
**	This amount is included in “Net unrealized appreciation on open forward contracts” on the Master’s Statements of Financial Condition.
Trading Gains and Losses, by Market Sector, on Derivative Instruments	The following table indicates the trading gains and losses, by market sector, on derivative instruments for the three months ended March 31, 2015 and 2014.
			Three Months Ended
			March  31,
	Sector		2015			2014
	Currencies		$	937,463		$	(509,562	)
	Energy			36,824			(638,380	)
	Grains			(48,323	)		62,251
	Indices			880,997			(1,417,728	)
	Interest Rates U.S.			264,010			(73,690	)
	Interest Rates Non-U.S.			828,901			161,043
	Livestock			(38,830	)		50,900
	Metals			(109,772	)		(654,838	)
	Softs			292,692			(73,146	)
	Total		$	3,043,962	***	$	(3,093,150	)***
	***	This amount is included in “Total trading results” on 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, 2015
Fair Value Disclosures [Abstract]
Derivative Instrument Fair Value Based on Hierarchy
		March 31,  2015		Quoted Prices in		Significant Other		Significant
		Total		Active Markets		Observable Inputs		Unobservable
				for Identical		(Level 2)		Inputs (Level 3)
				Assets and
				Liabilities
				(Level 1)
	Assets
	Futures	$	830,668	$	830,668	$	—	$	—
	Forwards		2,068,042		369,468		1,698,574		—
	Total assets	$	2,898,710	$	1,200,136	$	1,698,574	$	—
	Liabilities
	Futures	$	386,472	$	386,472	$	—	$	—
	Forwards		1,379,317		433,706		945,611		—
	Total liabilities	$	1,765,789	$	820,178	$	945,611	$	—
	Net fair value	$	1,132,921	$	379,958	$	752,963	$	—
		December 31,  2014		Quoted Prices in		Significant Other		Significant
		Total		Active Markets		Observable Inputs		Unobservable
				for Identical		(Level 2)		Inputs (Level 3)
				Assets and
				Liabilities
				(Level 1)
	Assets
	Futures	$	1,020,950	$	1,020,950	$	—	$	—
	Forwards		1,794,551		130,794		1,663,757		—
	Total assets	$	2,815,501	$	1,151,744	$	1,663,757	$	—
	Liabilities
	Futures	$	149,329	$	149,329	$	—	$	—
	Forwards		1,144,735		86,736		1,057,999		—
	Total liabilities	$	1,294,064	$	236,065	$	1,057,999	$	—
	Net fair value	$	1,521,437	$	915,679	$	605,758	$	—

Organization_Additional_Inform

Organization - Additional Information (Detail) (USD $)	0 Months Ended	6 Months Ended	0 Months Ended	3 Months Ended		6 Months Ended
	Jun. 01, 2014	Mar. 31, 2015	Jan. 01, 2005	Mar. 31, 2015	Mar. 31, 2014	Sep. 30, 2014
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Percentage of management fee	1.50%
Percentage of administrative fee		1.00%
Scenario, Previously Reported [Member]
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Percentage of management fee	2.00%
CMF Campbell Master Fund L.P. [Member]
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Units of Partnership purchased			173,788.64
Cash equal, Partnership purchased			$172,205,653
Fair value, Partnership purchased			$1,582,992
Morgan Stanley Wealth Management [Member]
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Ongoing selling agent fee		2.00%		2.00%	5.50%	3.00%

Basis_of_Presentation_and_Summ3

Basis of Presentation and Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)	0 Months Ended		3 Months Ended
	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Percentage of Partnership owned	100.00%	100.00%
Provision for income tax			$0

Basis_of_Presentation_and_Summ4

Basis of Presentation and Summary of Significant Accounting Policies - Statements of Financial Condition (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014
Equity in trading account:
Cash	$110,944	$132,084
Net unrealized appreciation on investments	1,132,921	1,521,437
Total assets	32,188,527	30,832,872
Accrued expenses:
Total liabilities	384,447	590,444
Partners' Capital:
General Partner, 0.0000 units outstanding at March 31, 2015 and December 31, 2014	349,549	322,878
Limited Partner, 14,286.7062 and 15,031.5695 units outstanding at March 31, 2015 and December 31, 2014, respectively	31,454,531	29,919,550
Total liabilities and partners' capital	32,188,527	30,832,872
Net asset value per unit	$1,815.10		$1,241.93
CMF Campbell Master Fund L.P. [Member]
Equity in trading account:
Cash	26,698,294	25,309,115
Cash margin	4,312,761	3,907,451
Total assets	32,143,976	30,738,003
Accrued expenses:
Clearing fees due to MS&Co.		2,220
Professional fees	66,562	35,131
Total liabilities	66,562	37,351
Partners' Capital:
General Partner, 0.0000 units outstanding at March 31, 2015 and December 31, 2014	0	0
Limited Partner, 14,286.7062 and 15,031.5695 units outstanding at March 31, 2015 and December 31, 2014, respectively	32,077,414	30,700,652
Total liabilities and partners' capital	32,143,976	30,738,003
Net asset value per unit	$2,245.26	$2,042.41	$1,455.61
CMF Campbell Master Fund L.P. [Member] | Futures Contracts [Member]
Equity in trading account:
Net unrealized appreciation on investments	444,196	871,621
CMF Campbell Master Fund L.P. [Member] | Forward Contracts [Member]
Equity in trading account:
Net unrealized appreciation on investments	$688,725	$649,816

Basis_of_Presentation_and_Summ5

Basis of Presentation and Summary of Significant Accounting Policies - Statements of Financial Condition (Parenthetical) (Detail)	Mar. 31, 2015	Dec. 31, 2014
Condensed Financial Statements, Captions [Line Items]
General Partner, unit equivalents	192.5786	192.5786
Limited Partners, units outstanding	17,329.38	17,845.31
CMF Campbell Master Fund L.P. [Member]
Condensed Financial Statements, Captions [Line Items]
General Partner, unit equivalents	0	0
Limited Partners, units outstanding	14,286.71	15,031.57

Basis_of_Presentation_and_Summ6

Basis of Presentation and Summary of Significant Accounting Policies - Condensed Schedule of Investments (Detail) (USD $)	Mar. 31, 2015		Dec. 31, 2014
Schedule of Investments [Line Items]
Investment in Master, at fair value	$32,077,583	[1]	$30,700,788	[1]
Net unrealized appreciation on open futures/forward contracts	1,132,921		1,521,437
Percentage of Partners' Capital	3.53%		4.96%
Unrealized Depreciation on Open Forward Contracts [Member]
Schedule of Investments [Line Items]
Net unrealized depreciation on futures/forward contracts	-1,379,317		-1,144,735
Percentage of Partners' Capital	-4.30%		-3.73%
Unrealized Depreciation on Open Forward Contracts [Member] | Metals [Member]
Schedule of Investments [Line Items]
Number of Contracts	192		60
Net unrealized depreciation on open futures/forward contracts	-433,706		-86,736
Percentage of Partners' Capital	-1.35%		-0.28%
Unrealized Depreciation on Open Forward Contracts [Member] | Currencies [Member]
Schedule of Investments [Line Items]
Notional	75,511,779		78,295,483
Net unrealized depreciation on futures/forward contracts	-945,611		-1,057,999
Percentage of Partners' Capital	-2.95%		-3.45%
Net Unrealized Appreciation on Open Forward Contracts [Member]
Schedule of Investments [Line Items]
Percentage of Partners' Capital	2.15%		2.12%
Unrealized Appreciation on Open Forward Contracts [Member]
Schedule of Investments [Line Items]
Net unrealized appreciation on open futures/forward contracts	2,068,042		1,794,551
Percentage of Partners' Capital	6.45%		5.85%
Unrealized Appreciation on Open Forward Contracts [Member] | Metals [Member]
Schedule of Investments [Line Items]
Number of Contracts	131		82
Net unrealized appreciation on open futures/forward contracts	369,468		130,794
Percentage of Partners' Capital	1.15%		0.43%
Unrealized Appreciation on Open Forward Contracts [Member] | Currencies [Member]
Schedule of Investments [Line Items]
Notional	109,484,734		110,605,414
Net unrealized appreciation on open futures/forward contracts	1,698,574		1,663,757
Percentage of Partners' Capital	5.30%		5.42%
Unrealized Appreciation on Open Forward Contracts [Member] | Forward Contracts [Member]
Schedule of Investments [Line Items]
Net unrealized appreciation on open futures/forward contracts	688,725		649,816
Futures Contracts Purchased [Member]
Schedule of Investments [Line Items]
Investment in Master, at fair value	266,951		659,120
Percentage of Partners' Capital	0.83%		2.15%
Futures Contracts Purchased [Member] | Metals [Member]
Schedule of Investments [Line Items]
Number of Contracts	3		2
Investment in Master, at fair value	-6,280		-3,187
Percentage of Partners' Capital	-0.02%		-0.01%
Futures Contracts Purchased [Member] | Grains [Member]
Schedule of Investments [Line Items]
Number of Contracts	14		28
Investment in Master, at fair value	-234		-49,997
Percentage of Partners' Capital	0.00%		-0.16%
Futures Contracts Purchased [Member] | Indices [Member]
Schedule of Investments [Line Items]
Number of Contracts	342		110
Investment in Master, at fair value	-33,902		2,926
Percentage of Partners' Capital	-0.11%		0.01%
Futures Contracts Purchased [Member] | Interest Rates Non-U.S. [Member]
Schedule of Investments [Line Items]
Number of Contracts	729		904
Investment in Master, at fair value	174,527		657,848
Percentage of Partners' Capital	0.54%		2.14%
Futures Contracts Purchased [Member] | Interest Rates U.S. [Member]
Schedule of Investments [Line Items]
Number of Contracts	184		94
Investment in Master, at fair value	128,300		64,630
Percentage of Partners' Capital	0.40%		0.21%
Futures Contracts Purchased [Member] | Livestock [Member]
Schedule of Investments [Line Items]
Number of Contracts	10		10
Investment in Master, at fair value	5,900		-8,130
Percentage of Partners' Capital	0.02%		-0.03%
Futures Contracts Purchased [Member] | Softs [Member]
Schedule of Investments [Line Items]
Number of Contracts	3		2
Investment in Master, at fair value	-1,360		-1,845
Percentage of Partners' Capital	0.00%		0.00%
Futures Contracts Purchased [Member] | Energy [Member]
Schedule of Investments [Line Items]
Number of Contracts			1
Investment in Master, at fair value			-3,125
Percentage of Partners' Capital			-0.01%
Futures Contracts Sold [Member]
Schedule of Investments [Line Items]
Investment in Master, at fair value	177,245		212,501
Percentage of Partners' Capital	0.55%		0.69%
Futures Contracts Sold [Member] | Metals [Member]
Schedule of Investments [Line Items]
Number of Contracts	16		15
Investment in Master, at fair value	19,305		14,305
Percentage of Partners' Capital	0.06%		0.05%
Futures Contracts Sold [Member] | Grains [Member]
Schedule of Investments [Line Items]
Number of Contracts	166		43
Investment in Master, at fair value	-12,725		14,237
Percentage of Partners' Capital	-0.04%		0.05%
Futures Contracts Sold [Member] | Indices [Member]
Schedule of Investments [Line Items]
Number of Contracts	3		6
Investment in Master, at fair value	-75		-1,588
Percentage of Partners' Capital	0.00%		0.00%
Futures Contracts Sold [Member] | Interest Rates Non-U.S. [Member]
Schedule of Investments [Line Items]
Number of Contracts	65		42
Investment in Master, at fair value	-3,733		-7,538
Percentage of Partners' Capital	-0.01%		-0.02%
Futures Contracts Sold [Member] | Interest Rates U.S. [Member]
Schedule of Investments [Line Items]
Number of Contracts	100		73
Investment in Master, at fair value	-73,140		11,813
Percentage of Partners' Capital	-0.23%		0.03%
Futures Contracts Sold [Member] | Softs [Member]
Schedule of Investments [Line Items]
Number of Contracts	63		69
Investment in Master, at fair value	173,255		28,560
Percentage of Partners' Capital	0.54%		0.09%
Futures Contracts Sold [Member] | Energy [Member]
Schedule of Investments [Line Items]
Number of Contracts	92		68
Investment in Master, at fair value	74,358		152,712
Percentage of Partners' Capital	0.23%		0.49%
Net Unrealized Appreciation on Open Futures Contracts [Member]
Schedule of Investments [Line Items]
Investment in Master, at fair value	$444,196		$871,621
Percentage of Partners' Capital	1.38%		2.84%
[1]	Defined in Note 1.

Basis_of_Presentation_and_Summ7

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, 2015		Mar. 31, 2014		Dec. 31, 2014
Investment Income:
Interest income	$541		$1,896
Expenses:
Total expenses	553,453		769,933
Net investment income (loss)	-552,912		-768,037
Net gains (losses) on trading of commodity interests:
Net realized gains (losses) on closed contracts	3,432,478		-2,513,725
Change in net unrealized gains (losses) on open contracts	-388,516		-579,425
Total trading results	3,043,962		-3,093,150
Net income (loss)	2,491,050		-3,861,187
Subscriptions - Limited Partner	383,092		3,201,764
Net increase (decrease) in Partners' Capital	1,561,652		-2,507,790
Partners' Capital, beginning of period	30,242,428		30,103,205
Partners' Capital, end of period	31,804,080		27,595,415
Net asset value per unit (14,286.7062 and 19,769.1860 units outstanding at March 31, 2015 and 2014, respectively)	$1,815.10		$1,241.93
Net income (loss) per unit	$138.49	[1]	($169.38)	[1]
Weighted average units outstanding	17,855.66		22,743.05
CMF Campbell Master Fund L.P. [Member]
Investment Income:
Interest income	541		1,896
Expenses:
Clearing fees	34,788		59,138
Professional fees	31,483		20,128
Total expenses	66,271		79,266
Net investment income (loss)	-65,730		-77,370
Net gains (losses) on trading of commodity interests:
Net realized gains (losses) on closed contracts	3,432,478		-2,513,725
Change in net unrealized gains (losses) on open contracts	-388,516		-579,425
Total trading results	3,043,962		-3,093,150
Net income (loss)	2,978,232		-3,170,520
Subscriptions - Limited Partner	383,092		3,201,764
Redemptions - Limited Partner	-1,984,021		-1,999,902
Distribution of interest income to feeder fund	-541		-1,896
Net increase (decrease) in Partners' Capital	1,376,762		-1,970,554
Partners' Capital, beginning of period	30,700,652		30,746,822
Partners' Capital, end of period	$32,077,414		$28,776,268
Net asset value per unit (14,286.7062 and 19,769.1860 units outstanding at March 31, 2015 and 2014, respectively)	$2,245.26		$1,455.61		$2,042.41
Net income (loss) per unit	$202.88		($160.73)
Weighted average units outstanding	14,893.08		20,110.42
[1]	Represents the change in net asset value per unit during the period.

Basis_of_Presentation_and_Summ8

Basis of Presentation and Summary of Significant Accounting Policies - Statements of Income and Expenses and Changes in Partners' Capital (Parenthetical) (Detail)	Mar. 31, 2015	Mar. 31, 2014
Condensed Financial Statements, Captions [Line Items]
Net asset value per unit outstanding	17,521.96	22,219.75
CMF Campbell Master Fund L.P. [Member]
Condensed Financial Statements, Captions [Line Items]
Net asset value per unit outstanding	14,286.71	19,769.19

Financial_Highlights_Changes_i

Financial Highlights - Changes in Net Asset Value Per Unit (Detail) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Changes in the net asset value per unit:
Net asset value per unit, beginning of period			$1,676.61
Net asset value per unit, end of period	$1,815.10		$1,676.61
Limited Partners [Member]
Ratio to average net assets:
Net investment income (loss)	-6.10%	-10.60%
Operating expenses	6.10%	10.70%
Incentive fees	0.30%
Total expenses	6.40%	10.70%
Total return:
Total return before incentive fees	8.60%	-12.00%
Incentive fees	-0.30%
Total return after incentive fees	8.30%	-12.00%
Changes in the net asset value per unit:
Expenses	($31.10)	($33.88)
Increase (decrease) for the period	$138.49	($169.38)
Net asset value per unit, beginning of period	$1,676.61	$1,411.31
Net asset value per unit, end of period	$1,815.10	$1,241.93
CMF Campbell Master Fund L.P. [Member]
Ratio to average net assets:
Net investment income (loss)	-0.80%	-1.00%
Operating expenses	0.90%	1.10%
Total return	9.90%	-10.00%
Changes in the net asset value per unit:
Net realized and unrealized gains (losses)	$207.38	($156.80)
Interest income	$0.03	$0.09
Expenses	($4.53)	($4.02)
Increase (decrease) for the period	$202.88	($160.73)
Distribution of interest income to feeder fund	($0.03)	($0.09)
Net asset value per unit, beginning of period	$2,042.41	$1,616.43
Net asset value per unit, end of period	$2,245.26	$1,455.61
CMF Campbell Master Fund L.P. [Member] | Limited Partners [Member]
Changes in the net asset value per unit:
Net realized and unrealized gains (losses)	$169.56	($135.58)
Interest income	$0.03	$0.08

Trading_Activities_Additional_

Trading Activities - Additional Information (Detail) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Derivative [Line Items]
Average number of futures contracts traded	1,604	1,907
Average number of metals forward contracts traded	412	656
Currencies [Member] | Forward Contracts [Member]
Derivative [Line Items]
Average notional values of currency forward contracts	351,428,637	611,112,913

Trading_Activities_Summary_of_

Trading Activities - Summary of Valuation of Master's Investments (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014
Derivative [Line Items]
Net Amounts Presented in the Statements of Financial Condition, Assets	$2,898,710	$2,815,501
Gross Amounts Recognized, Liabilities	-1,765,789	-1,294,064
Net fair value	1,132,921	1,521,437
CMF Campbell Master Fund L.P. [Member]
Derivative [Line Items]
Gross Amounts Recognized, Assets	2,898,710	2,815,501
Gross Amounts Offset in the Statements of Financial Condition, Assets	-1,765,789	-1,294,064
Net Amounts Presented in the Statements of Financial Condition, Assets	1,132,921	1,521,437
Financial Instruments, Assets	0	0
Collateral (Received)/Pledged, Assets	0	0
Net Amount, Assets	1,132,921	1,521,437
Gross Amounts Recognized, Liabilities	-1,765,789	-1,294,064
Gross Amounts Offset in the Statements of Financial Condition, Liabilities	1,765,789	1,294,064
Net Amounts Presented in the Statements of Financial Condition, Liabilities	0	0
Financial Instruments, Liabilities	0	0
Collateral (Received/Pledged, Liabilities	0	0
Net Amount, Liabilities	0	0
Net fair value	1,132,921	1,521,437
Futures Contracts [Member]
Derivative [Line Items]
Net Amounts Presented in the Statements of Financial Condition, Assets	830,668	1,020,950
Gross Amounts Recognized, Liabilities	-386,472	-149,329
Futures Contracts [Member] | CMF Campbell Master Fund L.P. [Member]
Derivative [Line Items]
Gross Amounts Recognized, Assets	830,668	1,020,950
Gross Amounts Offset in the Statements of Financial Condition, Assets	-386,472	-149,329
Net Amounts Presented in the Statements of Financial Condition, Assets	444,196	871,621
Financial Instruments, Assets	0	0
Collateral (Received)/Pledged, Assets	0	0
Net Amount, Assets	444,196	871,621
Gross Amounts Recognized, Liabilities	-386,472	-149,329
Gross Amounts Offset in the Statements of Financial Condition, Liabilities	386,472	149,329
Net Amounts Presented in the Statements of Financial Condition, Liabilities	0	0
Financial Instruments, Liabilities	0	0
Collateral (Received/Pledged, Liabilities	0	0
Net Amount, Liabilities	0	0
Forward Contracts [Member]
Derivative [Line Items]
Net Amounts Presented in the Statements of Financial Condition, Assets	2,068,042	1,794,551
Gross Amounts Recognized, Liabilities	-1,379,317	-1,144,735
Forward Contracts [Member] | CMF Campbell Master Fund L.P. [Member]
Derivative [Line Items]
Gross Amounts Recognized, Assets	2,068,042	1,794,551
Gross Amounts Offset in the Statements of Financial Condition, Assets	-1,379,317	-1,144,735
Net Amounts Presented in the Statements of Financial Condition, Assets	688,725	649,816
Financial Instruments, Assets	0	0
Collateral (Received)/Pledged, Assets	0	0
Net Amount, Assets	688,725	649,816
Gross Amounts Recognized, Liabilities	-1,379,317	-1,144,735
Gross Amounts Offset in the Statements of Financial Condition, Liabilities	1,379,317	1,144,735
Net Amounts Presented in the Statements of Financial Condition, Liabilities	0	0
Financial Instruments, Liabilities	0	0
Collateral (Received/Pledged, Liabilities	0	0
Net Amount, Liabilities	$0	$0

Trading_Activities_Gross_Fair_

Trading Activities - Gross Fair Values of Derivative Instruments of Futures, Forward and Options Contracts as Separate Assets and Liabilities (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014
Derivative [Line Items]
Total unrealized appreciation on open futures and forward contracts	$2,898,710	$2,815,501
Derivative liabilities	-1,765,789	-1,294,064
Futures Contracts [Member]
Derivative [Line Items]
Net unrealized appreciation and depreciation on open futures and forward contracts	444,196	871,621
Total unrealized appreciation on open futures and forward contracts	830,668	1,020,950
Derivative liabilities	-386,472	-149,329
Forward Contracts [Member]
Derivative [Line Items]
Net unrealized appreciation and depreciation on open futures and forward contracts	688,725	649,816
Total unrealized appreciation on open futures and forward contracts	2,068,042	1,794,551
Derivative liabilities	-1,379,317	-1,144,735
Assets [Member] | Futures Contracts [Member]
Derivative [Line Items]
Total unrealized appreciation on open futures and forward contracts	830,668	1,020,950
Assets [Member] | Futures Contracts [Member] | Energy [Member]
Derivative [Line Items]
Total unrealized appreciation on open futures and forward contracts	84,500	153,320
Assets [Member] | Futures Contracts [Member] | Grains [Member]
Derivative [Line Items]
Total unrealized appreciation on open futures and forward contracts	29,162	15,187
Assets [Member] | Futures Contracts [Member] | Indices [Member]
Derivative [Line Items]
Total unrealized appreciation on open futures and forward contracts	156,516	59,941
Assets [Member] | Futures Contracts [Member] | Interest Rates Non-U.S. [Member]
Derivative [Line Items]
Total unrealized appreciation on open futures and forward contracts	226,285	660,385
Assets [Member] | Futures Contracts [Member] | Interest Rates U.S. [Member]
Derivative [Line Items]
Total unrealized appreciation on open futures and forward contracts	132,207	86,643
Assets [Member] | Futures Contracts [Member] | Livestock [Member]
Derivative [Line Items]
Total unrealized appreciation on open futures and forward contracts	6,650	1,690
Assets [Member] | Futures Contracts [Member] | Metals [Member]
Derivative [Line Items]
Total unrealized appreciation on open futures and forward contracts	22,093	14,305
Assets [Member] | Futures Contracts [Member] | Softs [Member]
Derivative [Line Items]
Total unrealized appreciation on open futures and forward contracts	173,255	29,479
Assets [Member] | Forward Contracts [Member]
Derivative [Line Items]
Total unrealized appreciation on open futures and forward contracts	2,068,042	1,794,551
Assets [Member] | Forward Contracts [Member] | Metals [Member]
Derivative [Line Items]
Total unrealized appreciation on open futures and forward contracts	369,468	130,794
Assets [Member] | Forward Contracts [Member] | Currencies [Member]
Derivative [Line Items]
Total unrealized appreciation on open futures and forward contracts	1,698,574	1,663,757
Liabilities [Member] | Futures Contracts [Member]
Derivative [Line Items]
Derivative liabilities	-386,472	-149,329
Liabilities [Member] | Futures Contracts [Member] | Energy [Member]
Derivative [Line Items]
Derivative liabilities	-10,142	-3,733
Liabilities [Member] | Futures Contracts [Member] | Grains [Member]
Derivative [Line Items]
Derivative liabilities	-42,121	-50,947
Liabilities [Member] | Futures Contracts [Member] | Indices [Member]
Derivative [Line Items]
Derivative liabilities	-190,493	-58,603
Liabilities [Member] | Futures Contracts [Member] | Interest Rates Non-U.S. [Member]
Derivative [Line Items]
Derivative liabilities	-55,491	-10,075
Liabilities [Member] | Futures Contracts [Member] | Interest Rates U.S. [Member]
Derivative [Line Items]
Derivative liabilities	-77,047	-10,200
Liabilities [Member] | Futures Contracts [Member] | Livestock [Member]
Derivative [Line Items]
Derivative liabilities	-750	-9,820
Liabilities [Member] | Futures Contracts [Member] | Metals [Member]
Derivative [Line Items]
Derivative liabilities	-9,068	-3,187
Liabilities [Member] | Futures Contracts [Member] | Softs [Member]
Derivative [Line Items]
Derivative liabilities	-1,360	-2,764
Liabilities [Member] | Forward Contracts [Member]
Derivative [Line Items]
Derivative liabilities	-1,379,317	-1,144,735
Liabilities [Member] | Forward Contracts [Member] | Metals [Member]
Derivative [Line Items]
Derivative liabilities	-433,706	-86,736
Liabilities [Member] | Forward Contracts [Member] | Currencies [Member]
Derivative [Line Items]
Derivative liabilities	($945,611)	($1,057,999)

Trading_Activities_Trading_Gai

Trading Activities - Trading Gains and Losses, by Market Sector, on Derivative Instruments (Detail) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Derivative [Line Items]
Trading gains and losses	$3,043,962	($3,093,150)
Currencies [Member]
Derivative [Line Items]
Trading gains and losses	937,463	-509,562
Energy [Member]
Derivative [Line Items]
Trading gains and losses	36,824	-638,380
Grains [Member]
Derivative [Line Items]
Trading gains and losses	-48,323	62,251
Indices [Member]
Derivative [Line Items]
Trading gains and losses	880,997	-1,417,728
Interest Rates U.S. [Member]
Derivative [Line Items]
Trading gains and losses	264,010	-73,690
Interest Rates Non-U.S. [Member]
Derivative [Line Items]
Trading gains and losses	828,901	161,043
Livestock [Member]
Derivative [Line Items]
Trading gains and losses	-38,830	50,900
Metals [Member]
Derivative [Line Items]
Trading gains and losses	-109,772	-654,838
Softs [Member]
Derivative [Line Items]
Trading gains and losses	$292,692	($73,146)

Fair_Value_Measurements_Additi

Fair Value Measurements - Additional Information (Detail) (USD $)	3 Months Ended	12 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Fair Value Disclosures [Abstract]
Transfers of assets and liabilities between Level 1 and Level 2	$0	$0

Fair_Value_Measurements_Deriva

Fair Value Measurements - Derivative Instrument Fair Value Based on Hierarchy (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014
Derivative [Line Items]
Derivative assets	$2,898,710	$2,815,501
Derivative liabilities	1,765,789	1,294,064
Net fair value	1,132,921	1,521,437
Futures Contracts [Member]
Derivative [Line Items]
Derivative assets	830,668	1,020,950
Derivative liabilities	386,472	149,329
Forward Contracts [Member]
Derivative [Line Items]
Derivative assets	2,068,042	1,794,551
Derivative liabilities	1,379,317	1,144,735
Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1) [Member]
Derivative [Line Items]
Derivative assets	1,200,136	1,151,744
Derivative liabilities	820,178	236,065
Net fair value	379,958	915,679
Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1) [Member] | Futures Contracts [Member]
Derivative [Line Items]
Derivative assets	830,668	1,020,950
Derivative liabilities	386,472	149,329
Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1) [Member] | Forward Contracts [Member]
Derivative [Line Items]
Derivative assets	369,468	130,794
Derivative liabilities	433,706	86,736
Significant Other Observable Inputs (Level 2) [Member]
Derivative [Line Items]
Derivative assets	1,698,574	1,663,757
Derivative liabilities	945,611	1,057,999
Net fair value	752,963	605,758
Significant Other Observable Inputs (Level 2) [Member] | Forward Contracts [Member]
Derivative [Line Items]
Derivative assets	1,698,574	1,663,757
Derivative liabilities	$945,611	$1,057,999

Financial_Instrument_Risks_Add

Financial Instrument Risks - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2015
Investments, All Other Investments [Abstract]
Percentage of partnership master contract traded minimum	0.00%
Percentage of partnership master contract traded maximum	46.60%
Financial instruments maturity period	1 year