Nominal or face amount used to calculate payments on the derivative asset.

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

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Variable interest rate in effect as of the balance sheet date related to the interest rate derivative.

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Number of interest rate derivative instruments held by the entity at the reporting date.

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Amount after tax of reclassification adjustment from accumulated other comprehensive income of accumulated gain (loss) realized from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's deferred hedging gain (loss).

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Amount of unrealized gain (loss) related to the increase or decrease in fair value of interest rate derivatives designated as cash flow hedging instruments, which was recorded in accumulated other comprehensive income to the extent that the cash flow hedge was determined to be effective.

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Derivative Financial Instruments (Details) $ in Millions	3 Months Ended	6 Months Ended	12 Months Ended
Derivative Financial Instruments (Details) $ in Millions	Feb. 01, 2020 USD ($) derivative	Feb. 01, 2020 USD ($) derivative	Aug. 01, 2020 USD ($)	Aug. 03, 2019 USD ($)
Derivative [Line Items]
Unrealized Gain (Loss) on Interest Rate Cash Flow Hedges, Pretax, Accumulated Other Comprehensive Income (Loss)		$ 6.1		$ 6.3
Designated as Hedging Instrument \| Cash Flow Hedging \| Interest rate swap
Derivative [Line Items]
Number of Instruments \| derivative	1	1
Notional Agreement Principal Amount	$ 600.0	$ 600.0
Interest Rate	6.85%	6.85%
Interest Expense
Derivative [Line Items]
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax	$ 0.6	$ 0.9
Interest Expense \| Scenario, Forecast
Derivative [Line Items]
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax			$ 5.3
Fair Value, Inputs, Level 2 [Member] \| Designated as Hedging Instrument \| Cash Flow Hedging \| Interest rate swap
Derivative [Line Items]
Derivative, Fair Value, Net	6.1	6.1		6.3
Fair Value, Inputs, Level 2 [Member] \| Accrued Expenses and Other Current Liabilities \| Designated as Hedging Instrument \| Cash Flow Hedging \| Interest rate swap
Derivative [Line Items]
Derivative, Fair Value, Net	5.1	5.1		3.1
Fair Value, Inputs, Level 2 [Member] \| Other Noncurrent Liabilities \| Designated as Hedging Instrument \| Cash Flow Hedging \| Interest rate swap
Derivative [Line Items]
Derivative, Fair Value, Net	$ 1.0	$ 1.0		$ 3.2