v3.20.4
Segment Information - Revenue and Accounts Receivable by Major Customer (Details) - Significant Customer - Customer Concentration Risk
12 Months Ended
Jan. 31, 2021
Jan. 26, 2020
Revenue    
Revenue, Major Customer [Line Items]    
Concentration risk (as percent)   11.00%
Accounts Receivable    
Revenue, Major Customer [Line Items]    
Concentration risk (as percent) 16.00% 21.00%