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Debt - Interest Rates at Period End (Details) - USD ($)
6 Months Ended 9 Months Ended
Jul. 25, 2020
Oct. 26, 2019
Jan. 25, 2020
Line of Credit Facility [Line Items]      
Debt Instrument Fair Value, Per Stated Incremental Portion on Principal $ 97.25   $ 97.25
Standby Letters of Credit      
Line of Credit Facility [Line Items]      
Debt instrument, effective interest rate 1.75%   2.00%
Line of credit $ 0    
Credit Agreement - Term Loan (matures April 2020)      
Line of Credit Facility [Line Items]      
Debt instrument, effective interest rate 1.92%   3.67%
Credit Agreement - Revolving facility (matures April 2020)      
Line of Credit Facility [Line Items]      
Debt instrument, effective interest rate 1.93%   0.00%
Unutilized commitment fee (in percent) 0.35% 0.40%