Net Assets in Liquidation - Allowed and Disputed General Unsecured Claims and Potential Term Loan Avoidance Action Claims (Detail) - USD ($)	12 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Extinguishment of Debt [Line Items]
Beginning balance	$ 33,423,630,000	$ 33,433,130,000
New Allowed General Unsecured Claims	55,000
Disputed General Unsecured Claims resolved or disallowed	(55,000)	(9,500,000)
Ending balance	33,423,630,000	33,423,630,000
Allowed General Unsecured Claims [Member]
Extinguishment of Debt [Line Items]
Beginning balance	31,853,630,000	31,853,630,000
New Allowed General Unsecured Claims	55,000
Ending balance	31,853,685,000	31,853,630,000
Disputed General Unsecured Claims [Member]
Extinguishment of Debt [Line Items]
Beginning balance	70,000,000	79,500,000
Disputed General Unsecured Claims resolved or disallowed		(9,500,000)
Ending balance	70,000,000	70,000,000
Term Loan Avoidance Action Claims [Member]
Extinguishment of Debt [Line Items]
Beginning balance	1,500,000,000	1,500,000,000
Disputed General Unsecured Claims resolved or disallowed	(55,000)
Ending balance	1,499,945,000	1,500,000,000
Maximum Amount of Unresolved Claims [Member]
Extinguishment of Debt [Line Items]
Beginning balance	1,570,000,000	1,579,500,000
Disputed General Unsecured Claims resolved or disallowed	(55,000)	(9,500,000)
Ending balance	$ 1,569,945,000	$ 1,570,000,000