Net Assets in Liquidation - Schedule of GUC Trust Units (Detail)	3 Months Ended
	Dec. 31, 2016 Trust
Net Assets [Abstract]
Outstanding or issuable at beginning of period	31,853,964
Issued during the period	130
Less: Issuable at beginning of period	(130)
Add: Issuable at end of period	92
Outstanding or issuable at end of period	31,854,056