Summary of Significant Accounting Policies - Merchandise Inventories (Details) - USD ($) $ in Millions	Feb. 01, 2020	Feb. 02, 2019
Goodwill and Intangible Assets [Abstract]
Inventory reserves	$ 58.0	$ 69.4

Amount of valuation reserve for inventory.

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant