INVESTMENTS, DERIVATIVE CONTRACTS AND OFF-BALANCE SHEET RISK (Details 7) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Trading profits (losses) of the Partnership's derivatives
Realized Profits (Losses)	$ (5,385,874)	$ 355,636	$ (5,800,757)	$ (338,935)
Change in Net Unrealized Profits (Losses)	(877,438)	(422,344)	1,857,396	(3,226,927)
Net Trading Profits (Losses)	(6,263,312)	(66,708)	(3,943,361)	(3,565,862)
Futures
Trading profits (losses) of the Partnership's derivatives
Realized Profits (Losses)	(7,554,670)	(3,164,714)	(5,681,905)	(1,794,263)
Change in Net Unrealized Profits (Losses)	(630,919)	39,159	(300,400)	(1,947,657)
Net Trading Profits (Losses)	(8,185,589)	(3,125,555)	(5,982,305)	(3,741,920)
Futures \| Agriculture
Trading profits (losses) of the Partnership's derivatives
Realized Profits (Losses)	(547,950)	(120,979)	(1,131,254)	(1,651,707)
Change in Net Unrealized Profits (Losses)	645,965	(268,888)	861,230	11,704
Net Trading Profits (Losses)	98,015	(389,867)	(270,024)	(1,640,003)
Futures \| Currencies
Trading profits (losses) of the Partnership's derivatives
Realized Profits (Losses)	(3,415,248)	(1,760,351)	(2,433,906)	(2,991,488)
Change in Net Unrealized Profits (Losses)	391,248	656,765	(269,778)	(500,120)
Net Trading Profits (Losses)	(3,024,000)	(1,103,586)	(2,703,684)	(3,491,608)
Futures \| Energy
Trading profits (losses) of the Partnership's derivatives
Realized Profits (Losses)	(704,990)	(54,081)	(1,436,708)	2,687,506
Change in Net Unrealized Profits (Losses)	(283,255)	(337,259)	(160,328)	(469,704)
Net Trading Profits (Losses)	(988,245)	(391,340)	(1,597,036)	2,217,802
Futures \| Interest rates
Trading profits (losses) of the Partnership's derivatives
Realized Profits (Losses)	(2,976,700)	3,942,555	(4,121,339)	3,066,401
Change in Net Unrealized Profits (Losses)	(861,890)	(279,944)	(573,079)	(1,527,352)
Net Trading Profits (Losses)	(3,838,590)	3,662,611	(4,694,418)	1,539,049
Futures \| Metals
Trading profits (losses) of the Partnership's derivatives
Realized Profits (Losses)	577,453	(525,382)	9,914	(1,242,926)
Change in Net Unrealized Profits (Losses)	(369,181)	352,495	260,469	320,045
Net Trading Profits (Losses)	208,272	(172,887)	270,383	(922,881)
Futures \| Stock indices
Trading profits (losses) of the Partnership's derivatives
Realized Profits (Losses)	(487,235)	(4,646,476)	3,431,388	(1,662,049)
Change in Net Unrealized Profits (Losses)	(153,806)	(84,010)	(418,914)	217,770
Net Trading Profits (Losses)	(641,041)	(4,730,486)	3,012,474	(1,444,279)
Forwards \| Currencies
Trading profits (losses) of the Partnership's derivatives
Realized Profits (Losses)	(155,113)	1,264,166	(4,374,243)	(2,634,490)
Change in Net Unrealized Profits (Losses)	(805,196)	(569,810)	1,376,639	(1,345,157)
Net Trading Profits (Losses)	(960,309)	694,356	(2,997,604)	(3,979,647)
Options
Trading profits (losses) of the Partnership's derivatives
Realized Profits (Losses)	2,323,909	2,256,184	4,255,391	4,089,818
Change in Net Unrealized Profits (Losses)	558,677	108,307	781,157	65,887
Net Trading Profits (Losses)	2,882,586	2,364,491	5,036,548	4,155,705
Options \| Agriculture
Trading profits (losses) of the Partnership's derivatives
Realized Profits (Losses)	(31,303)		(54,714)
Change in Net Unrealized Profits (Losses)	36,502		82,044
Net Trading Profits (Losses)	5,199		27,330
Options \| Currencies
Trading profits (losses) of the Partnership's derivatives
Realized Profits (Losses)	1,070,875	323,312	1,679,370	572,753
Change in Net Unrealized Profits (Losses)	(77,848)	(1,861)	182,553	21,078
Net Trading Profits (Losses)	993,027	321,451	1,861,923	593,831
Options \| Energy
Trading profits (losses) of the Partnership's derivatives
Realized Profits (Losses)	204,661	407,881	517,275	529,452
Change in Net Unrealized Profits (Losses)	47,556	(108,246)	(7,195)	(110,068)
Net Trading Profits (Losses)	252,217	299,635	510,080	419,384
Options \| Interest rates
Trading profits (losses) of the Partnership's derivatives
Realized Profits (Losses)	1,031,483	1,195,011	2,086,779	2,376,973
Change in Net Unrealized Profits (Losses)	(407,428)	116,037	(379,406)	75,820
Net Trading Profits (Losses)	624,055	1,311,048	1,707,373	2,452,793
Options \| Metals
Trading profits (losses) of the Partnership's derivatives
Realized Profits (Losses)	(95,677)	70,288	(233,017)	68,154
Change in Net Unrealized Profits (Losses)	972,120		912,735
Net Trading Profits (Losses)	876,443	70,288	679,718	68,154
Options \| Stock indices
Trading profits (losses) of the Partnership's derivatives
Realized Profits (Losses)	143,870	259,692	259,698	542,486
Change in Net Unrealized Profits (Losses)	(12,225)	102,377	(9,574)	79,057
Net Trading Profits (Losses)	$ 131,645	$ 362,069	$ 250,124	$ 621,543

BlackRock Global Horizons I L.P. 10-Q