Organization and Basis of Presentation - Fiscal Year (Details) - weeks	12 Months Ended
	Jan. 31, 2021	Jan. 26, 2020	Jan. 27, 2019
Fiscal Year [Line Items]
Number of weeks in reporting period	53	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