Long-Term Leases - Additional Information (Detail)	12 Months Ended
Jan. 28, 2017
Leases [Abstract]
Maximum term of operating leases	10 years
Operating leases expiration year	2027

Term of the lessee's leasing arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

No definition available.

Name:	us-gaap_LesseeLeasingArrangementsOperatingLeasesTermOfContract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration