Commitments and Contingencies - Additional Information (Detail) $ in Thousands		2 Months Ended
	May 09, 2017 USD ($)	Jun. 30, 2015 Lawsuit	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)
Loss Contingencies [Line Items]
Restricted cash			$ 175,665	$ 87,616	$ 92,475
Number of filed lawsuits by Sears Holdings shareholders | Lawsuit		4
Litigation settlement, amount	$ 19,000
Sears Holdings Corporation [Member]
Loss Contingencies [Line Items]
Litigation settlement, amount	$ 40,000
Environmental Expenses Reserve [Member]
Loss Contingencies [Line Items]
Restricted cash			$ 10,800	$ 11,800