Fair Value Derivative Contracts on Gross Basis by Type of Contract (Detail) - USD ($) $ in Millions	Oct. 31, 2015	Jan. 31, 2015	Nov. 01, 2014
Derivatives Designated as Hedging Instruments
Derivative [Line Items]
Fair value of derivative liability	$ 3	$ 4	$ 2
Derivatives Designated as Non-Hedging Instruments
Derivative [Line Items]
Fair value of derivative asset	2	0	0
Fair value of derivative liability	$ 3	$ 1	$ 0

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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- Definition

Fair value as of the balance sheet date of all foreign currency derivative assets designated as cash flow hedging instruments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4B
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624163-113959

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- Definition

Fair value as of the balance sheet date of all foreign currency derivative liabilities designated as cash flow hedging instruments.

+ References

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