Goodwill and Intangible Assets, net - Summary of Goodwill and Definite-lived Intangible Assets, Net, (Parenthetical) (Detail) - USD ($) $ in Millions	12 Months Ended
	Feb. 01, 2020	Jan. 28, 2017
Intangible Assets, Net (Including Goodwill) [Abstract]
Accumulated impairment	$ 1.7	$ 2.5