Derivatives and Hedging Activities - Narrative (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
Apr. 26, 2020	Jan. 31, 2021
Derivative [Line Items]
Gain (Loss) on Hedging Activity		$ (0.5)
Interest Rate Swap
Derivative [Line Items]
Derivative, Term of Contract	3 years
Long-term Debt	$ 150.0	$ 150.0
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate		1.9775%
Total Return Swap
Derivative [Line Items]
Gain (Loss) on Hedging Activity		$ 0.3
Derivative, Notional Amount		11.9
Derivative, Fair Value, Net		$ (0.2)

Fair value of the assets less the liabilities of a derivative or group of derivatives.

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Nominal or face amount used to calculate payment on derivative.

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Period the derivative contract is outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Gain (loss) incurred in hedging activities.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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The interest rate applicable to the portion of the carrying amount of long-term borrowings outstanding as of the balance sheet date, including current maturities, which accrues interest at a set, unchanging rate.

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