Organization (Details) (USD $)	2 Months Ended	12 Months Ended	0 Months Ended	3 Months Ended
	Feb. 28, 2012 Class	Dec. 31, 2014 Class	Jan. 01, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Capital Unit [Line Items]
Number of share classes	4	2
Cash		$ 0		0	$ 0
Boronia I, LLC [Member] | Subsequent Event [Member]
Capital Unit [Line Items]
Management fee, monthly basis (in hundredths)			0.125%
Management fee, annual basis (in hundredths)			1.50%
Boronia I, LLC [Member] | Less Than or Equal to $60 Million [Member]
Capital Unit [Line Items]
Management fee, monthly basis (in hundredths)		0.25%
Management fee, annual basis (in hundredths)		3.00%
Boronia I, LLC [Member] | Less Than or Equal to $60 Million [Member] | Maximum [Member]
Capital Unit [Line Items]
Beginning net assets		60,000,000		60,000,000
Boronia I, LLC [Member] | Greater Than $60 Million and Less Than or Equal to $120 Million [Member]
Capital Unit [Line Items]
Management fee, monthly basis (in hundredths)		0.156%
Management fee, annual basis (in hundredths)		1.875%
Boronia I, LLC [Member] | Greater Than $60 Million and Less Than or Equal to $120 Million [Member] | Minimum [Member]
Capital Unit [Line Items]
Beginning net assets		60,000,000		60,000,000
Boronia I, LLC [Member] | Greater Than $60 Million and Less Than or Equal to $120 Million [Member] | Maximum [Member]
Capital Unit [Line Items]
Beginning net assets		120,000,000		120,000,000
Boronia I, LLC [Member] | Greater Than $120 Million [Member]
Capital Unit [Line Items]
Management fee, monthly basis (in hundredths)		0.125%
Management fee, annual basis (in hundredths)		1.50%
Boronia I, LLC [Member] | Greater Than $120 Million [Member] | Minimum [Member]
Capital Unit [Line Items]
Beginning net assets		$ 120,000,000		120,000,000
TT II, LLC [Member]
Capital Unit [Line Items]
Management fee, monthly basis (in hundredths)				0.104%
Management fee, annual basis (in hundredths)				1.25%
Class D [Member]
Capital Unit [Line Items]
Number of shares outstanding (in shares)		0		0	0	23.012	59.829