Plan of Liquidation (Details) (USD $)	1 Months Ended
	Mar. 31, 2012	May 31, 2011	Sep. 30, 2012	Dec. 15, 2011	Mar. 31, 2011
Plan of Liquidation (Textual) [Abstract]
Allowed General Unsecured Claims					$ 29,771,000,000
Disputed general unsecured claims					8,154,000,000
Total aggregate amount of general unsecured claims, both allowed and disputed					39,425,000,000
Amount of term loan avoidance action				1,500,000,000
Distributable assets new GM shares				150,000,000
Allowed general unsecured claims threshold				35,000,000,000
Potential additional shares to be issued				30,000,000
Allowed general unsecured claims maximum excess amount				7,000,000,000
Contribution from MLC					52,700,000
Shares requested to be sold to provide additional funds					87,182
Warrants requested to be sold to provide additional funds					79,256
Cash proceeds from sale		5,700,000
Motion seeking liquidation of securities to fund projected GUC Trust fees, costs and expenses for 2011 and 2012	26,500,000
Liquidation of stock to fund projected costs, fees and expenses of the Avoidance Action Trust	13,700,000
Proceeds from liquidation of securities to fund projected trust fees costs and expenses	26,500,000
Proceeds from liquidation of securities to fund avoidance action trust costs	13,700,000
New GM Securities reserved or set aside for projected GUC Trust fees, costs and expenses			52,700,000
Proceeds held by GUC trust	13,700,000
New GM Securities reserved and set aside for potential Taxes on Distribution			189,600,000
Tax basis on securities held			1,094,000,000
Residual wind-down assets				$ 41,362,444
New GM Series A Warrants [Member]
Class of Warrant or Right [Line Items]
Distributable assets number of securities called by warrants				136,363,635
Exercise price per share				$ 10.00
New GM Series B Warrants [Member]
Class of Warrant or Right [Line Items]
Distributable assets number of securities called by warrants				136,363,635
Exercise price per share				$ 18.33