Employee Retirement Plans (Details) - USD ($) $ in Millions	12 Months Ended
Jan. 28, 2018	Jan. 29, 2017	Jan. 31, 2016
Employee Retirement Plans [Abstract]
Employee Retirement Plans Maximum Contribution Percentage Of Earnings	80.00%
401K Plan employer contribution expense in US	$ 23	$ 12	$ 8
Defined Contribution Plan, Cost Recognized, outside US	$ 25	$ 23	$ 21

Amount of cost for defined contribution plan.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 70
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942

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