Contingencies (Details) $ in Millions	3 Months Ended
Aug. 04, 2018 USD ($)
Loss Contingencies [Line Items]
Proposed Litigation Settlement, Amount	$ 25.0
Loss Contingency, Potential Incremental Loss Portion Not Accrued	20.0
Accrued legal contingencies	$ 23.0

The difference between the maximum amount of estimated loss and the amount recorded as of the balance sheet date.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 05
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=6395354&loc=d3e12631-108344

Name:	us-gaap_LossContingencyRangeOfPossibleLossPortionNotAccrued
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant