Accounts receivable, net - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
Feb. 02, 2013 D	Feb. 02, 2013 UNITED KINGDOM	Jan. 28, 2012 UNITED KINGDOM
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage allowance on losses	100.00%
Losses allowance maturity date, (in days)	90
Finance receivable age, (in days)	90
Gross accounts receivable		$ 13.0	$ 11.3
Valuation of allowance		$ 0.6	$ 0.5

For an unclassified balance sheet, a valuation allowance for receivables due a company that are expected to be uncollectible.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5074-111524

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 4

-Article 5

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.10)

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Name:	us-gaap_AllowanceForDoubtfulAccountsReceivable
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant