Derivatives and Hedging, Effect of Trading Activities on the Statements of Financial Condition (Details) (USD $)	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Futures and Forward Contracts [Abstract]
Unrealized currency loss	$ (669,947)	$ (689,577)
Total net unrealized gain on open contracts	5,792,535	6,652,432
Options Contracts at Fair Value [Abstract]
Options purchased	6,462,482	7,342,009
Effect of Trading Activities on Statements of Income [Abstract]
Trading results	20,704,997	5,941,647	(6,598,423)
Unrealized currency gain (loss)	19,627	514,288	99,725
Net realized	21,564,894	1,840,569	(2,747,878)
Net change in unrealized	(859,897)	4,101,078	(3,850,545)
Total Trading Results	20,704,997	5,941,647	(6,598,423)
Commodity [Member]
Effect of Trading Activities on Statements of Income [Abstract]
Trading results	11,295,753	(8,240,610)	(12,872,729)
Equity [Member]
Effect of Trading Activities on Statements of Income [Abstract]
Trading results	(3,990,077)	17,236,173	6,993,095
Foreign Currency [Member]
Effect of Trading Activities on Statements of Income [Abstract]
Trading results	4,165,976	69,245	(2,206,555)
Interest Rate [Member]
Effect of Trading Activities on Statements of Income [Abstract]
Trading results	9,213,718	(3,637,449)	1,388,041
Long [Member] \| Options [Member]
Futures and Forward Contracts [Abstract]
Average number of contracts outstanding		3
Options Contracts at Fair Value [Abstract]
Options purchased		0
Short [Member] \| Options [Member]
Futures and Forward Contracts [Abstract]
Average number of contracts outstanding		2
Options Contracts at Fair Value [Abstract]
Options written		0
Futures and Forward Contracts [Member]
Futures and Forward Contracts [Abstract]
Net unrealized gain/(loss)	6,462,482	7,342,009
Futures and Forward Contracts [Member] \| Commodity [Member]
Futures and Forward Contracts [Abstract]
Net unrealized gain/(loss)	2,350,061	893,523
Average number of contracts outstanding	4,302	4,153
Futures and Forward Contracts [Member] \| Equity [Member]
Futures and Forward Contracts [Abstract]
Net unrealized gain/(loss)	138,787	3,494,644
Average number of contracts outstanding	1,107	1,717
Futures and Forward Contracts [Member] \| Foreign Currency [Member]
Futures and Forward Contracts [Abstract]
Net unrealized gain/(loss)	1,043,536	2,277,669
Average number of contracts outstanding	1,707	3,214
Futures and Forward Contracts [Member] \| Interest Rate [Member]
Futures and Forward Contracts [Abstract]
Net unrealized gain/(loss)	2,930,098	676,173
Average number of contracts outstanding	4,621	5,741
Futures and Forward Contracts [Member] \| Long [Member]
Futures and Forward Contracts [Abstract]
Unrealized gain	4,004,870	5,560,057
Unrealized loss	(2,696,905)	(2,536,429)
Total net unrealized gain on open contracts	1,307,965	3,023,628
Futures and Forward Contracts [Member] \| Long [Member] \| Commodity [Member]
Futures and Forward Contracts [Abstract]
Unrealized gain	282,336	561,914
Unrealized loss	(2,191,868)	(1,776,263)
Futures and Forward Contracts [Member] \| Long [Member] \| Equity [Member]
Futures and Forward Contracts [Abstract]
Unrealized gain	515,619	3,462,235
Unrealized loss	(278,910)	0
Futures and Forward Contracts [Member] \| Long [Member] \| Foreign Currency [Member]
Futures and Forward Contracts [Abstract]
Unrealized gain	161,381	1,474,046
Unrealized loss	(109,346)	(124,132)
Futures and Forward Contracts [Member] \| Long [Member] \| Interest Rate [Member]
Futures and Forward Contracts [Abstract]
Unrealized gain	3,045,534	61,862
Unrealized loss	(116,781)	(636,034)
Futures and Forward Contracts [Member] \| Short [Member]
Futures and Forward Contracts [Abstract]
Unrealized gain	5,569,682	4,862,091
Unrealized loss	(415,165)	(543,710)
Total net unrealized gain on open contracts	5,154,517	4,318,381
Futures and Forward Contracts [Member] \| Short [Member] \| Commodity [Member]
Futures and Forward Contracts [Abstract]
Unrealized gain	4,475,726	2,430,029
Unrealized loss	(216,133)	(322,157)
Futures and Forward Contracts [Member] \| Short [Member] \| Equity [Member]
Futures and Forward Contracts [Abstract]
Unrealized gain	7,778	36,105
Unrealized loss	(105,700)	(3,696)
Futures and Forward Contracts [Member] \| Short [Member] \| Foreign Currency [Member]
Futures and Forward Contracts [Abstract]
Unrealized gain	1,083,928	986,884
Unrealized loss	(92,427)	(59,129)
Futures and Forward Contracts [Member] \| Short [Member] \| Interest Rate [Member]
Futures and Forward Contracts [Abstract]
Unrealized gain	2,250	1,409,073
Unrealized loss	(905)	(158,728)
Morgan Stanley Smith Barney Spectrum Currency and Commodity L.P. [Member]
Futures and Forward Contracts [Abstract]
Unrealized currency loss		0
Total net unrealized gain on open contracts		0
Morgan Stanley Smith Barney Spectrum Currency and Commodity L.P. [Member] \| Long [Member] \| Options [Member]
Futures and Forward Contracts [Abstract]
Average number of contracts outstanding		1
Options Contracts at Fair Value [Abstract]
Options purchased		0
Morgan Stanley Smith Barney Spectrum Currency and Commodity L.P. [Member] \| Futures and Forward Contracts [Member]
Futures and Forward Contracts [Abstract]
Net unrealized gain/(loss)		0
Morgan Stanley Smith Barney Spectrum Currency and Commodity L.P. [Member] \| Futures and Forward Contracts [Member] \| Foreign Currency [Member]
Futures and Forward Contracts [Abstract]
Net unrealized gain/(loss)		0
Average number of contracts outstanding		826
Morgan Stanley Smith Barney Spectrum Currency and Commodity L.P. [Member] \| Futures and Forward Contracts [Member] \| Long [Member]
Futures and Forward Contracts [Abstract]
Unrealized gain		0
Unrealized loss		0
Morgan Stanley Smith Barney Spectrum Currency and Commodity L.P. [Member] \| Futures and Forward Contracts [Member] \| Long [Member] \| Foreign Currency [Member]
Futures and Forward Contracts [Abstract]
Unrealized gain		0
Unrealized loss		0
Morgan Stanley Smith Barney Spectrum Currency and Commodity L.P. [Member] \| Futures and Forward Contracts [Member] \| Short [Member]
Futures and Forward Contracts [Abstract]
Unrealized gain		0
Unrealized loss		0
Morgan Stanley Smith Barney Spectrum Currency and Commodity L.P. [Member] \| Futures and Forward Contracts [Member] \| Short [Member] \| Foreign Currency [Member]
Futures and Forward Contracts [Abstract]
Unrealized gain		0
Unrealized loss		0
Morgan Stanley Smith Barney Spectrum Technical L.P. [Member]
Futures and Forward Contracts [Abstract]
Unrealized currency loss	(3,465,597)	(3,447,831)
Total net unrealized gain on open contracts	604,870	1,225,590
Options Contracts at Fair Value [Abstract]
Options purchased	4,070,467	4,673,421
Effect of Trading Activities on Statements of Income [Abstract]
Trading results	21,773,211	9,944,758	(19,787,603)
Unrealized currency gain (loss)	(52,678)	35,320	(6,376,922)
Net realized	22,532,708	7,217,969	(6,219,265)
Net change in unrealized	(620,720)	2,267,134	(9,809,697)
Total Trading Results	21,773,211	9,944,758	(19,787,603)
Morgan Stanley Smith Barney Spectrum Technical L.P. [Member] \| Commodity [Member]
Effect of Trading Activities on Statements of Income [Abstract]
Trading results	3,173,650	1,447,554	7,806,061
Morgan Stanley Smith Barney Spectrum Technical L.P. [Member] \| Equity [Member]
Effect of Trading Activities on Statements of Income [Abstract]
Trading results	3,873,373	16,778,460	(58,323,819)
Morgan Stanley Smith Barney Spectrum Technical L.P. [Member] \| Foreign Currency [Member]
Effect of Trading Activities on Statements of Income [Abstract]
Trading results	(6,165,114)	1,893,467	(30,995,834)
Morgan Stanley Smith Barney Spectrum Technical L.P. [Member] \| Interest Rate [Member]
Effect of Trading Activities on Statements of Income [Abstract]
Trading results	20,943,980	(10,210,043)	68,102,911
Morgan Stanley Smith Barney Spectrum Technical L.P. [Member] \| Futures and Forward Contracts [Member]
Futures and Forward Contracts [Abstract]
Net unrealized gain/(loss)	4,070,467	4,673,421
Morgan Stanley Smith Barney Spectrum Technical L.P. [Member] \| Futures and Forward Contracts [Member] \| Commodity [Member]
Futures and Forward Contracts [Abstract]
Net unrealized gain/(loss)	1,129,935	563,916
Average number of contracts outstanding	1,561	1,300
Morgan Stanley Smith Barney Spectrum Technical L.P. [Member] \| Futures and Forward Contracts [Member] \| Equity [Member]
Futures and Forward Contracts [Abstract]
Net unrealized gain/(loss)	481,200	3,132,697
Average number of contracts outstanding	1,203	1,458
Morgan Stanley Smith Barney Spectrum Technical L.P. [Member] \| Futures and Forward Contracts [Member] \| Foreign Currency [Member]
Futures and Forward Contracts [Abstract]
Net unrealized gain/(loss)	789,496	798,291
Average number of contracts outstanding	1,355	4,080
Morgan Stanley Smith Barney Spectrum Technical L.P. [Member] \| Futures and Forward Contracts [Member] \| Interest Rate [Member]
Futures and Forward Contracts [Abstract]
Net unrealized gain/(loss)	1,669,836	178,517
Average number of contracts outstanding	4,328	3,501
Morgan Stanley Smith Barney Spectrum Technical L.P. [Member] \| Futures and Forward Contracts [Member] \| Long [Member]
Futures and Forward Contracts [Abstract]
Unrealized gain	2,846,733	3,985,807
Unrealized loss	(2,007,451)	(1,180,500)
Total net unrealized gain on open contracts	839,282	2,805,307
Morgan Stanley Smith Barney Spectrum Technical L.P. [Member] \| Futures and Forward Contracts [Member] \| Long [Member] \| Commodity [Member]
Futures and Forward Contracts [Abstract]
Unrealized gain	35,163	182,135
Unrealized loss	(640,745)	(386,829)
Morgan Stanley Smith Barney Spectrum Technical L.P. [Member] \| Futures and Forward Contracts [Member] \| Long [Member] \| Equity [Member]
Futures and Forward Contracts [Abstract]
Unrealized gain	713,684	3,110,927
Unrealized loss	(173,835)	(1,174)
Morgan Stanley Smith Barney Spectrum Technical L.P. [Member] \| Futures and Forward Contracts [Member] \| Long [Member] \| Foreign Currency [Member]
Futures and Forward Contracts [Abstract]
Unrealized gain	267,933	539,752
Unrealized loss	(1,043,641)	(239,072)
Morgan Stanley Smith Barney Spectrum Technical L.P. [Member] \| Futures and Forward Contracts [Member] \| Long [Member] \| Interest Rate [Member]
Futures and Forward Contracts [Abstract]
Unrealized gain	1,829,953	152,993
Unrealized loss	(149,230)	(553,425)
Morgan Stanley Smith Barney Spectrum Technical L.P. [Member] \| Futures and Forward Contracts [Member] \| Short [Member]
Futures and Forward Contracts [Abstract]
Unrealized gain	3,698,721	2,147,652
Unrealized loss	(467,536)	(279,538)
Total net unrealized gain on open contracts	3,231,185	1,868,114
Morgan Stanley Smith Barney Spectrum Technical L.P. [Member] \| Futures and Forward Contracts [Member] \| Short [Member] \| Commodity [Member]
Futures and Forward Contracts [Abstract]
Unrealized gain	1,817,116	893,327
Unrealized loss	(81,599)	(124,717)
Morgan Stanley Smith Barney Spectrum Technical L.P. [Member] \| Futures and Forward Contracts [Member] \| Short [Member] \| Equity [Member]
Futures and Forward Contracts [Abstract]
Unrealized gain	17,967	28,444
Unrealized loss	(76,616)	(5,500)
Morgan Stanley Smith Barney Spectrum Technical L.P. [Member] \| Futures and Forward Contracts [Member] \| Short [Member] \| Foreign Currency [Member]
Futures and Forward Contracts [Abstract]
Unrealized gain	1,855,362	601,972
Unrealized loss	(290,158)	(104,361)
Morgan Stanley Smith Barney Spectrum Technical L.P. [Member] \| Futures and Forward Contracts [Member] \| Short [Member] \| Interest Rate [Member]
Futures and Forward Contracts [Abstract]
Unrealized gain	8,276	623,909
Unrealized loss	(19,163)	(44,960)
Morgan Stanley Smith Barney Spectrum Technical L.P. [Member] \| Blackwater Master Fund [Member]
Effect of Trading Activities on Statements of Income [Abstract]
Realized gain (loss) on Investment	668,573	396,051	(4,657,167)
Unrealized appreciation (depreciation) on investment	$ (807,350)	$ 63,604	$ 898,526

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This element represents the aggregate unrealized foreign currency transaction gain (loss) (pretax) included in determining total unrealized gains or losses for the reporting period. Represents the aggregate of gains (losses) on transactions that are unsettled as of the balance sheet date.

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The realized gains or losses on Master Fund investments during the period, not including gains or losses on securities separately or otherwise categorized as trading, available-for-sale, or held-to-maturity.

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The change in the difference between the fair value and the carrying value, or in the comparative fair values, of investments, not including unrealized gains or losses on securities separately or otherwise categorized as trading, available-for-sale, or held-to-maturity, held at each balance sheet date and included in earnings for the period.

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

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Fair value of the assets less the liabilities of a derivative or group of derivatives.

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Fair value portion of liability related to investment contracts for example, but not limited to, guaranteed investment contract or annuities.

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The sum of the realized and unrealized net gain (loss) on trading securities during the period.

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Amount of unrealized holding gain (loss) recognized in the income statement for investments in debt and equity securities and other forms of securities that provide ownership interests classified as trading.

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