General - Statements of Financial Condition (Parenthetical) (Detail) (USD $)	Jun. 30, 2013	Dec. 31, 2012	Jun. 30, 2012
Condensed Financial Statements, Captions [Line Items]
Cost of options purchased	$ 176,179,528	$ 214,452,195
Member's capital account units outstanding	71,776.9756	82,455.2248
Limited Partners [Member]
Condensed Financial Statements, Captions [Line Items]
Stock option redemption premium	$ 81,917,009	$ 75,518,560
Member's capital account units outstanding	71,776.9756		91,670.4071