Derivatives - Derivatives Not Designated as Hedging Instruments (Details) - USD ($) $ in Millions	12 Months Ended
Jan. 28, 2017	Jan. 30, 2016
Not Designated as Hedging Instrument \| Foreign currency contracts \| Other operating income, net
Derivative [Line Items]
Foreign currency contracts not designated as hedging	$ 6.3	$ (4.5)

Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5624171-113959

Name:	us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration