Stock-Based Compensation (Detail 4) - USD ($) $ in Millions	12 Months Ended
Jan. 29, 2016	Jan. 30, 2015	Jan. 31, 2014
Share Based Compensation [Abstract]
Stock exchanged at fair value upon exercises of stock options	$ 3	$ 2	$ 1
Tax benefits realized from exercises of stock options	3	1
Total intrinsic value of options exercised	$ 10	$ 7

Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (d)(2)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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