Condensed Statements of Changes in Net Assets in Liquidation (Liquidation Basis) (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012	Dec. 31, 2011
Condensed Statements of Changes in Net Assets in Liquidation (Liquidation Basis) [Abstract]
Net Assets in Liquidation, beginning of period	$ 1,150,707	$ 1,173,638	$ 1,369,239
Increase (decrease) in net assets in liquidation:
Transfer of interest in securities due from Motors Liquidation Company				9,900,699
Additions (net) to reserves for Expected Costs of Liquidation	(13,563)	(37,212)	(18,961)	(42,869)
Liquidating distributions of securities	(20,637)	(75,433)	(75,786)	(7,884,803)
Net change in fair value of holdings of New GM Securities	441,209	39,884	194,886	(872,199)
Interest and dividend income	49	22	122	71
Income tax provision	(172,039)		(83,774)
Net increase (decrease) in net assets in liquidation	235,019	(72,739)	16,487	1,100,899
Net Assets in Liquidation, end of period	$ 1,385,726	$ 1,100,899	$ 1,385,726	$ 1,100,899