Organization and Basis of Presentation - Settlements (Details) - USD ($) $ in Millions		12 Months Ended
Aug. 01, 2018	Jan. 27, 2019
Loss Contingencies [Line Items]
Litigation settlement	$ 9.0
Selling, general and administrative expenses
Loss Contingencies [Line Items]
Litigation settlement		$ 8.0

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.

No definition available.

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