Share-Based Compensation - Summary of Restricted Stock Awards and Performance-based Restricted Stock Unit Activity (Details)	3 Months Ended
	May 04, 2019 $ / shares shares
Restricted Stock Awards
Number of Units/ Shares
Unvested, beginning of period (in shares) | shares	2,715,466
Granted (in shares) | shares	2,338,690
Vested (in shares) | shares	(1,043,156)
Forfeited (in shares) | shares	(849,773)
Unvested, end of period (in shares) | shares	3,161,227
Weighted Average Grant Date Fair Value
Unvested, beginning of period (in dollars per share) | $ / shares	$ 10.92
Granted (in dollars per share) | $ / shares	4.76
Vested (in dollars per share) | $ / shares	11.72
Forfeited (in dollars per share) | $ / shares	7.56
Unvested, end of period (in dollars per share) | $ / shares	$ 7.00
Performance-Based Restricted Stock Units
Number of Units/ Shares
Unvested, beginning of period (in shares) | shares	1,067,338
Granted (in shares) | shares	1,170,650
Vested (in shares) | shares	(244,628)
Forfeited (in shares) | shares	(927,109)
Unvested, end of period (in shares) | shares	1,066,251
Weighted Average Grant Date Fair Value
Unvested, beginning of period (in dollars per share) | $ / shares	$ 11.40
Granted (in dollars per share) | $ / shares	4.23
Vested (in dollars per share) | $ / shares	13.19
Forfeited (in dollars per share) | $ / shares	7.60
Unvested, end of period (in dollars per share) | $ / shares	$ 6.42