Net Assets in Liquidation - Allowed and Disputed General Unsecured Claims and Potential Term Loan Avoidance Action Claims (Detail) $ in Thousands	3 Months Ended
	Jun. 30, 2019 USD ($)
Loss Contingencies [Line Items]
Beginning balance	$ 33,400,275
New Allowed General Unsecured Claims
Disputed General Unsecured Claims resolved or disallowed
Term Loan Avoidance Action Claims resolved or disallowed
Ending balance	33,400,275
Allowed General Unsecured Claims [Member]
Loss Contingencies [Line Items]
Beginning balance	31,855,432
New Allowed General Unsecured Claims
Disputed General Unsecured Claims resolved or disallowed
Term Loan Avoidance Action Claims resolved or disallowed
Ending balance	31,855,432
Disputed General Unsecured Claims [Member]
Loss Contingencies [Line Items]
Beginning balance	50,000
New Allowed General Unsecured Claims
Disputed General Unsecured Claims resolved or disallowed
Term Loan Avoidance Action Claims resolved or disallowed
Ending balance	50,000
Term Loan Avoidance Action Claims [Member]
Loss Contingencies [Line Items]
Beginning balance	1,494,843
New Allowed General Unsecured Claims
Disputed General Unsecured Claims resolved or disallowed
Term Loan Avoidance Action Claims resolved or disallowed
Ending balance	1,494,843
Maximum Amount of Unresolved Claims [Member]
Loss Contingencies [Line Items]
Beginning balance	1,544,843
New Allowed General Unsecured Claims
Disputed General Unsecured Claims resolved or disallowed
Term Loan Avoidance Action Claims resolved or disallowed
Ending balance	$ 1,544,843