Consolidated Statements of Financial Condition (Unaudited) (Parenthetical)	Mar. 31, 2021 $ / Unit shares	Dec. 31, 2020 $ / Unit shares
Class 0 Units [Member]
Members' capital:
Capital units, issued (in units)	102,155.320	102,935.438
Capital units, outstanding (in units)	102,155.320	102,935.438
Capital units, value (in dollars per unit) | $ / Unit	181.44	173.06
Class 2 Units [Member]
Members' capital:
Capital units, issued (in units)	88,141.061	89,986.690
Capital units, outstanding (in units)	88,141.061	89,986.690
Capital units, value (in dollars per unit) | $ / Unit	130.05	124.23