STATEMENTS OF FINANCIAL CONDITION (USD $)	Dec. 31, 2014	Dec. 31, 2013
Investments in Affiliated Trading Companies:
Total Investments in Affiliated Trading Companies, at fair values	$ 68,647,268	$ 104,693,311
Total Assets	68,647,268us-gaap_Assets	104,693,311us-gaap_Assets
LIABILITIES
Redemptions payable	1,227,643mfhv_RedemptionsPayable	5,420,050mfhv_RedemptionsPayable
Redemptions payable to affiliates	0mfhv_RedemptionsPayableAffiliates	111,683mfhv_RedemptionsPayableAffiliates
Total Liabilities	1,227,643us-gaap_Liabilities	5,531,733us-gaap_Liabilities
PARTNERS' CAPITAL
Total Partners' Capital	67,419,625us-gaap_PartnersCapital	99,161,578us-gaap_PartnersCapital
Total Liabilities and Partners' Capital	68,647,268	104,693,311
Class A [Member]
PARTNERS' CAPITAL
Total Partners' Capital	44,556,904	64,998,638
NET ASSET VALUE PER UNIT
Net Asset Value Per Unit (in dollars per unit)	$ 1,084.45	$ 1,003.60
Class B [Member]
PARTNERS' CAPITAL
Total Partners' Capital	8,573,625	13,112,357
NET ASSET VALUE PER UNIT
Net Asset Value Per Unit (in dollars per unit)	$ 1,125.36	$ 1,036.30
Class C [Member]
PARTNERS' CAPITAL
Total Partners' Capital	8,907,494	12,299,982
NET ASSET VALUE PER UNIT
Net Asset Value Per Unit (in dollars per unit)	$ 1,167.84	$ 1,070.09
Class D [Member]
PARTNERS' CAPITAL
Total Partners' Capital	3,655,437	5,540,411
NET ASSET VALUE PER UNIT
Net Asset Value Per Unit (in dollars per unit)	$ 1,189.56	$ 1,087.29
Class Z [Member]
PARTNERS' CAPITAL
Total Partners' Capital	1,726,165	3,210,190
NET ASSET VALUE PER UNIT
Net Asset Value Per Unit (in dollars per unit)	$ 1,257.58	$ 1,140.95
Boronia I, LLC [Member]
Investments in Affiliated Trading Companies:
Total Investments in Affiliated Trading Companies, at fair values	20,866,487	13,028,763
BHM I, LLC [Member]
Investments in Affiliated Trading Companies:
Total Investments in Affiliated Trading Companies, at fair values	19,943,769	41,594,514
Altis I, LLC [Member]
Investments in Affiliated Trading Companies:
Total Investments in Affiliated Trading Companies, at fair values	16,029,791	25,192,531
Aspect I, LLC [Member]
Investments in Affiliated Trading Companies:
Total Investments in Affiliated Trading Companies, at fair values	11,807,221	14,920,512
Kaiser I, LLC [Member]
Investments in Affiliated Trading Companies:
Total Investments in Affiliated Trading Companies, at fair values	$ 0	$ 9,956,991

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