Condensed Statements of Changes in Net Assets in Liquidation (Liquidation Basis) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Condensed Statements of Changes in Net Assets in Liquidation (Liquidation Basis) [Abstract]
Net Assets in Liquidation, beginning of period	$ 1,369,239
Increases (decreases) 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	(720)	(5,657)
Liquidating distributions of securities	(19,842)	(7,736,781)
Net change in fair value of holdings of New GM Securities	(449,947)	(12,317)
Interest income	53	29
Income tax benefit	108,583
Net increase (decrease) in net assets in liquidation	(361,873)	2,145,973
Net Assets in Liquidation, end of period	$ 1,007,366	$ 2,145,973