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Net Loss Per Share - Computations of Basic and Diluted Net Income Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended						9 Months Ended
	Oct. 31, 2020	Aug. 01, 2020	May 02, 2020	Nov. 02, 2019	Aug. 03, 2019	May 04, 2019	Oct. 31, 2020	Nov. 02, 2019
Numerator:
Net loss	$ (22,908)	$ (157,893)	$ (113,033)	$ (82,501)	$ (57,331)	$ (48,450)	$ (293,834)	$ (188,282)
Denominator:
Weighted average shares — basic (in shares)	670,487			668,178			667,186	667,184
Effect of dilutive securities:
Share-based awards (in shares)	0			0			0	0
Weighted average shares — diluted (in shares)	670,487			668,178			667,186	667,184
Net loss per share:
Basic (in dollars per share)	$ (0.03)			$ (0.12)			$ (0.44)	$ (0.28)
Diluted (in dollars per share)	$ (0.03)			$ (0.12)			$ (0.44)	$ (0.28)