Debt (10.000% Senior Notes due in 2021 ) - Additional Information (Detail) - 10.000% Senior Notes Due in 2021 [Member] $ in Millions	Jan. 30, 2018 USD ($)
Debt Instrument [Line Items]
Repayments of debt	$ 250.0
Premium costs paid on extinguishment of debt	12.5
Accrued interest	10.3
Write-off of unamortized premium	$ 19.6

The increase (decrease) during the reporting period in interest payable, which represents the amount owed to note holders, bond holders, and other parties for interest earned on loans or credit extended to the reporting entity.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585

Name:	us-gaap_IncreaseDecreaseInInterestPayableNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration