Accounts Payable, Accrued Expenses and Other Current Liabilities - Contract Liabilities (Detail) $ in Millions	3 Months Ended		6 Months Ended
	Aug. 03, 2019 USD ($)	Aug. 04, 2018 USD ($)	Aug. 03, 2019 USD ($)	Aug. 04, 2018 USD ($)
Contract Liabilities
Revenue recognized from gift cards and merchandise credits	$ 4.6	$ 4.8	$ 9.3	$ 9.7
Gift card breakage recorded	$ 0.4	$ 0.4	$ 0.8	$ 0.8
Gift card and merchandise credit liabilities expected to be recognized when gift cards are redeemed, percent			70