Organization and Basis of Presentation - Fiscal Year (Details) - weeks	12 Months Ended
	Jan. 27, 2019	Jan. 28, 2018	Jan. 29, 2017
Fiscal Year [Line Items]
Number of weeks in reporting period	52	52	52
Minimum
Fiscal Year [Line Items]
Number of weeks in reporting period	52
Maximum
Fiscal Year [Line Items]
Number of weeks in reporting period	53