Income Taxes - Narrative (Details) - USD ($) $ in Millions	Oct. 27, 2019	Jan. 27, 2019
Income Tax Disclosure [Abstract]
Net tax benefits, if recognized, would impact the effective tax rate	$ 9.6	$ 4.5

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

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-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

Name:	us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant