Net Assets in Liquidation - Allowed and Disputed General Unsecured Claims and Potential Term Loan Avoidance Action Claims (Detail) $ in Thousands	3 Months Ended
	Sep. 30, 2019 USD ($)
Loss Contingencies [Line Items]
Beginning balance	$ 33,400,275
New Allowed General Unsecured Claims	231,000
Disputed General Unsecured Claims resolved or disallowed	(50,000)
Term Loan Avoidance Action Claims resolved or disallowed	(1,494,843)
Ending balance	32,086,432
Allowed General Unsecured Claims [Member]
Loss Contingencies [Line Items]
Beginning balance	31,855,432
New Allowed General Unsecured Claims	231,000
Ending balance	32,086,432
Disputed General Unsecured Claims [Member]
Loss Contingencies [Line Items]
Beginning balance	50,000
Disputed General Unsecured Claims resolved or disallowed	(50,000)
Term Loan Avoidance Action Claims [Member]
Loss Contingencies [Line Items]
Beginning balance	1,494,843
Term Loan Avoidance Action Claims resolved or disallowed	(1,494,843)
Maximum Amount of Unresolved Claims [Member]
Loss Contingencies [Line Items]
Beginning balance	1,544,843
Disputed General Unsecured Claims resolved or disallowed	(50,000)
Term Loan Avoidance Action Claims resolved or disallowed	$ (1,494,843)