Condensed Statements of Net Assets in Liquidation (Liquidation Basis) (Liquidation Basis of Accounting [Member], USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Mar. 31, 2014
ASSETS
Cash and Cash Equivalents	$ 25,508	$ 14,932
Marketable Securities	32,088	44,382
Accrued Dividends on Holdings of New GM Common Stock	3,465
Holdings of New GM Securities (Note 5)	843,834	1,114,078
Other Assets and Deposits	514	1,502
TOTAL ASSETS	905,409	1,174,894
LIABILITIES
Accounts Payable and Other Liabilities	4,401	3,105
Liquidating Distributions Payable (Note 4)	6,033	42,111
Reserves for Residual-Wind Down Claims (Note 7)	26,431	28,698
Reserves for Expected Costs of Liquidation (Note 7)	32,632	36,486
TOTAL LIABILITIES	69,497	110,400
NET ASSETS IN LIQUIDATION (Note 3)	835,912	1,064,494
Reserves for Expected Costs of Liquidation [Member]
LIABILITIES
Reserves for Expected Costs of Liquidation (Note 7)	$ 32,632	$ 36,486