Contingencies (Details) - Settled Litigation [Member] $ in Millions	3 Months Ended	9 Months Ended
May 05, 2018 USD ($)	Nov. 03, 2018
Loss Contingencies [Line Items]
Number of Shareholder Derivative Lawsuits		3
Shareholder and Derivatives Matter [Member]
Loss Contingencies [Line Items]
Loss Contingency, Loss in Period	$ 3.5

The amount of loss pertaining to the specified contingency that was charged against earnings in the period, including the effects of revisions in previously reported estimates.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14326-108349

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