Share-Based Compensation Share-Based Compensation - Additional Information About Stock Unit Activity (Details) - Stock Units [Member] - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
Feb. 03, 2018	Jan. 28, 2017	Jan. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted Average Fair Value Per Share of Stock Units Granted Including Those Subject to Performance Conditions	$ 21.81	$ 26.47	$ 37.80
Fair value of Stock Units vested (in millions)	$ 64	$ 59	$ 77

Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

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=96867065&loc=d3e5070-113901

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