Income Taxes (Narrative) (Details) - USD ($) $ in Millions		3 Months Ended	6 Months Ended
Dec. 21, 2017	Aug. 04, 2018	Feb. 03, 2018	Jul. 29, 2017	Aug. 04, 2018	Jul. 29, 2017
Income Taxes [Abstract]
Tax Cuts and Jobs Act, Incomplete Accounting, Transition Tax for Accumulated Foreign Earnings, Provisional Income Tax Expense		$ (1)	$ 99
Federal statutory income tax rate	35.00%				21.00%
Income tax expense		$ 27		$ 22	$ 91	$ 111
Effective income tax rate		23.60%		30.90%	26.40%	32.60%

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-Subparagraph (h)
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(h))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 20
-Section 45
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109238882&loc=d3e38679-109324

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration