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Commitments and Contingencies (Details) - USD ($) $ in Millions		3 Months Ended
	Jun. 06, 2017	Apr. 28, 2017	Jul. 29, 2016
Gain Contingencies [Line Items]
Litigation Settlement, Amount Awarded from Other Party	$ 7.5	$ 1.0	$ 1.2

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_GainContingenciesLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount awarded from other party in judgment or settlement of litigation.

+ References

No definition available.

+ Details

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