Net Assets in Liquidation - Allowed and Disputed General Unsecured Claims and Potential Term Loan Avoidance Action Claims (Detail)	3 Months Ended
	Jun. 30, 2017 USD ($)
Loss Contingencies [Line Items]
Beginning balance	$ 33,403,235,000
New Allowed General Unsecured Claims	1,350,000
Term Loan Avoidance Action Claims resolved or disallowed	(3,972,000)
Ending balance	33,400,613,000
Allowed General Unsecured Claims [Member]
Loss Contingencies [Line Items]
Beginning balance	31,854,031,000
New Allowed General Unsecured Claims	1,350,000
Ending balance	31,855,381,000
Disputed General Unsecured Claims [Member]
Loss Contingencies [Line Items]
Beginning balance	50,000,000
Ending balance	50,000,000
Term Loan Avoidance Action Claims [Member]
Loss Contingencies [Line Items]
Beginning balance	1,499,204,000
Term Loan Avoidance Action Claims resolved or disallowed	(3,972,000)
Ending balance	1,495,232,000
Maximum Amount of Unresolved Claims [Member]
Loss Contingencies [Line Items]
Beginning balance	1,549,204,000
Term Loan Avoidance Action Claims resolved or disallowed	(3,972,000)
Ending balance	$ 1,545,232,000