Net Assets in Liquidation - Schedule of GUC Trust Units (Parenthetical) (Detail)		3 Months Ended
	Mar. 31, 2011 USD ($) Unit	Jun. 30, 2019
Units Outstanding Or Issuable Description		The number of GUC Trust Units outstanding or issuable as of the end of the quarter does not equal the amount of Allowed General Unsecured Claims on a 1 to 1,000 basis at the corresponding date because of additional GUC Trust Units that were issued due to rounding.
Number Of Trust Units Issued Per Thousand Dollars Of Allowed General Unsecured Claims | Unit	1
Amount Of Allowed General Unsecured Claims For Issuance Of One Trust Unit | $	$ 1,000