Condensed Statements of Changes in Net Assets in Liquidation (Liquidation Basis) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012
Income Statement [Abstract]
Net Assets in Liquidation, beginning of period	$ 2,077,458	$ 1,150,707	$ 1,390,181	$ 1,369,239
Increase (decrease) in net assets in liquidation:
Net (additions) reductions to reserves for Expected Costs of Liquidation (Note 7)	(646)	(13,563)	7,563	(18,961)
Liquidating distributions (Note 4)	(1,067,130)	(20,637)	(1,167,938)	(75,786)
Net change in fair value of holdings of New GM Securities	353,679	441,209	968,670	194,886
Interest and dividend income	16	49	56	122
Income tax (provision) benefit (Note 8)	(32,183)	(172,039)	132,662	(83,774)
Net (decrease) increase in net assets in liquidation	(746,264)	235,019	(58,987)	16,487
Net Assets in Liquidation, end of period	$ 1,331,194	$ 1,385,726	$ 1,331,194	$ 1,385,726