Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
-Sentence Column B

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The applicable margin for the debt instrument related to the interest rate derivative, included in the total fixed rate payable on the derivative notional amount.

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The interest rate period of the variable rate basis used to determine the floating rate receivable on the notional amount of the derivative instrument.

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The estimated net amount of existing gains or losses on cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months.

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Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset.

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

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Fixed interest rate related to the interest rate derivative.

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No definition available.

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Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments.

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Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and not elected to be offset.

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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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- Definition

Amount of gain (loss) from the ineffectiveness of the hedge.

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Derivative Financial Instruments (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 28, 2017	Oct. 29, 2016	Oct. 28, 2017	Oct. 29, 2016	Apr. 29, 2017	Jan. 31, 2015
Derivative Financial Instruments
Pre-tax (losses) gains associated with foreign exchange forward contracts	$ 0.7	$ 0.4	$ 0.2	$ 2.3
Other assets
Derivative Financial Instruments
Derivative asset	0.1		0.1
Interest rate swap \| Designated as hedging instruments
Derivative Financial Instruments
Fair value of the interest rate swaps	1.8		1.8
Hedge ineffectiveness			0.0
Effective portion of the loss expected to be reclassified from accumulated other comprehensive (loss) income into earnings over the next 12 months			1.8
Interest rate swap \| Designated as hedging instruments \| Accrued expenses and other current liabilities
Derivative Financial Instruments
Derivative liability	1.9		1.9
Interest rate swap \| Designated as hedging instruments \| Other assets
Derivative Financial Instruments
Derivative asset	0.1		0.1
Interest rate swap matures in August 2018 \| Designated as hedging instruments
Derivative Financial Instruments
Notional amount	$ 200.0		$ 200.0			$ 520.0
Fixed rate payable (as a percent)	5.03%		5.03%
Applicable margin included in fixed rate (as a percent)			3.50%
Interest rate swap matures in August 2018 \| Designated as hedging instruments \| LIBOR
Derivative Financial Instruments
Period for interest rate basis for variable rate receivable			3 months
Interest rate swap matures in June 2021 \| Designated as hedging instruments
Derivative Financial Instruments
Notional amount	$ 290.0		$ 290.0		$ 260.0
Fixed rate payable (as a percent)	5.56%		5.56%
Applicable margin included in fixed rate (as a percent)			3.50%
Interest rate swap matures in June 2021 \| Designated as hedging instruments \| LIBOR
Derivative Financial Instruments
Period for interest rate basis for variable rate receivable			1 month
Foreign exchange forward \| Designated as hedging instruments
Derivative Financial Instruments
Effective portion of the loss expected to be reclassified from accumulated other comprehensive (loss) income into earnings over the next 12 months			$ 1.5
Foreign exchange forward \| Designated as hedging instruments \| Accrued expenses and other current liabilities
Derivative Financial Instruments
Derivative liability	$ 0.2		$ 0.2