Liquidating Distributions - Additional Information (Detail) - USD ($) $ in Millions	1 Months Ended	3 Months Ended
	Jul. 31, 2019	Sep. 30, 2019	Jun. 30, 2019
Distribution Made to Limited Partner [Line Items]
Cash distributions payable			$ 1.8
Subsequent Event [Member]
Distribution Made to Limited Partner [Line Items]
Reduction in distribution set aside for term loan avoidance action claims and disputed general unsecured claims	$ 1,313.8
Expected distributions payable in respect of guc trust units		$ 320.9