Net Assets in Liquidation - Schedule of GUC Trust Units (Parenthetical) (Detail)		12 Months Ended
	Mar. 31, 2011 USD ($) Unit	Mar. 31, 2020
Units Outstanding Or Issuable Description		The number of GUC Trust Units outstanding as of end of year does not equal the amount of Allowed General Unsecured Claims on a 1 to 1,000 basis as of 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