Net Assets in Liquidation - Schedule of GUC Trust Units (Parenthetical) (Detail)		12 Months Ended
	Mar. 31, 2011 USD ($) Unit	Mar. 31, 2017
Net Assets [Abstract]
GUC Trust Units Outstanding or Issuable, description		The number of GUC Trust Units outstanding or issuable at end of year 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 required to issue one Trust Unit per contingent rights | $	$ 1,000