Share-Based Compensation (Restricted Stock Units Activity) (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended
		May 01, 2021	May 02, 2020	[1]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Payment Arrangement, Exercise of Option, Tax Benefit		$ 3,190	$ 0
Restricted Stock Unit Activity, Number of Underlying Shares
Number of Underlying Shares, Beginning Balance at February 1, 2020		384,757
Number of Underlying Shares, Granted		0
Number of Underlying Shares, Forfeited		(34,150)
Number of Underlying Shares, Ending Balance at August 1, 2020		296,230
Restricted Stock Unit Activity, Weighted-Average Grant Date Fair Value
Weighted-Average Grant Date Fair Value, Beginning Balance at February 1, 2020		$ 33.04
Weighted-Average Grant Date Fair Value, Granted		0
Weighted-Average Grant Date Fair Value, Forfeited		54.87
Weighted-Average Grant Date Fair Value, Ending Balance at August 1, 2020		$ 32.53
Service-based restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount		$ 39,044
Restricted Stock Unit Activity, Number of Underlying Shares
Number of Underlying Shares, Beginning Balance at February 1, 2020		3,037,098
Number of Underlying Shares, Granted		613,809
Number of Underlying Shares, Adjustments for performance achievement		0
Number of Underlying Shares, Vested		(855,914)
Number of Underlying Shares, Forfeited		(32,474)
Number of Underlying Shares, Ending Balance at August 1, 2020	[2]	2,762,519
Restricted Stock Unit Activity, Weighted-Average Grant Date Fair Value
Weighted-Average Grant Date Fair Value, Beginning Balance at February 1, 2020		$ 11.62
Weighted-Average Grant Date Fair Value, Granted		31.68
Weighted-Average Grant Date Fair Value, Adjustments for performance achievement		0
Weighted-Average Grant Date Fair Value, Vested		12.43
Weighted-Average Grant Date Fair Value, Forfeited		11.98
Weighted-Average Grant Date Fair Value, Ending Balance at August 1, 2020		$ 15.82
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition		1 year 4 months 24 days
Performance-based restricted stock units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount		$ 5,791
Restricted Stock Unit Activity, Number of Underlying Shares
Number of Underlying Shares, Beginning Balance at February 1, 2020		297,216
Number of Underlying Shares, Granted		146,580
Number of Underlying Shares, Adjustments for performance achievement		(106,715)
Number of Underlying Shares, Vested		0
Number of Underlying Shares, Forfeited		(1,704)
Number of Underlying Shares, Ending Balance at August 1, 2020		335,377
Restricted Stock Unit Activity, Weighted-Average Grant Date Fair Value
Weighted-Average Grant Date Fair Value, Beginning Balance at February 1, 2020		$ 22.43
Weighted-Average Grant Date Fair Value, Granted		31.78
Weighted-Average Grant Date Fair Value, Adjustments for performance achievement		21.31
Weighted-Average Grant Date Fair Value, Vested		0
Weighted-Average Grant Date Fair Value, Forfeited		23.05
Weighted-Average Grant Date Fair Value, Ending Balance at August 1, 2020		$ 26.87
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition		1 year 3 months 18 days
Market-based restricted stock units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount		$ 10,662
Restricted Stock Unit Activity, Number of Underlying Shares
Number of Underlying Shares, Beginning Balance at February 1, 2020		721,879
Number of Underlying Shares, Granted		73,294
Number of Underlying Shares, Adjustments for performance achievement		(6,084)
Number of Underlying Shares, Vested		(100,634)
Number of Underlying Shares, Forfeited		(10,657)
Number of Underlying Shares, Ending Balance at August 1, 2020		677,798
Restricted Stock Unit Activity, Weighted-Average Grant Date Fair Value
Weighted-Average Grant Date Fair Value, Beginning Balance at February 1, 2020		$ 21.46
Weighted-Average Grant Date Fair Value, Granted		49.81
Weighted-Average Grant Date Fair Value, Adjustments for performance achievement		33.69
Weighted-Average Grant Date Fair Value, Vested		33.69
Weighted-Average Grant Date Fair Value, Forfeited		18.91
Weighted-Average Grant Date Fair Value, Ending Balance at August 1, 2020		$ 22.66
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition		1 year 1 month 6 days

[1] No income tax benefit was recognized during the thirteen weeks ended May 2, 2020 due to the establishment of a valuation allowance.

[2] Unvested shares related to restricted stock units with performance-based and market-based vesting conditions are reflected at 100% of their target vesting amount in the table above. Unvested shares related to restricted stock units with performance-based and market-based vesting conditions can be achieved at up to 200% of their target vesting amount.