Income Taxes - Narrative (Details) - USD ($) $ in Millions	6 Months Ended
Jul. 29, 2018	Jan. 28, 2018
Income Tax Disclosure [Abstract]
Statutory federal income tax rate	21.00%
Increase (decrease) In global tax rate, percent	10.50%
Income tax benefit	$ 15.8
Percentage of uncertain tax positions evaluating criteria	50.00%
Net tax benefits, if recognized, would impact the effective tax rate	$ 4.7	$ 3.9

Effective Income Tax Rate Reconciliation, Change In Enacted Tax Rate, Increase (Decrease) In Global Tax Rate, Percent

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- Definition

Percentage of uncertain tax positions evaluating criteria

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- Definition

Tax Cuts And Jobs Act Of 2017, Change In Tax Rate, Deferred Tax Asset, Provisional Income Tax Expense

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- Definition

Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB TOPIC 6.I)
-URI http://asc.fasb.org/extlink&oid=34349781&loc=d3e330036-122817

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 13
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32698-109319

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The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 15A
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319

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