Stock-Based Compensation - Restricted Stock (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended	24 Months Ended
Jan. 30, 2021	Feb. 01, 2020	Feb. 02, 2019	Jan. 30, 2021
Restricted Stock
Stock-Based Compensation and Employee Stock Plans
Vesting period	3 years
Restricted stock activity
Nonvested at the beginning of the period (in shares)	3,386,950	3,457,617	3,604,237	3,457,617
Granted (in shares)	2,744,671	1,578,677	1,616,600
Vested (in shares)	(803,743)	(852,549)	(549,293)
Forfeited (in shares)	(434,146)	(796,795)	(1,213,927)
Nonvested at the end of the period (in shares)	4,893,732	3,386,950	3,457,617	4,893,732
Weighted Average Grant Date Fair Value
Nonvested at beginning of the period (in dollars per share)	$ 37.94	$ 38.88	$ 44.84	$ 38.88
Granted (in dollars per share)	18.29	37.37	33.96
Vested (in dollars per share)	46.17	38.96	49.88
Forfeited (in dollars per share)	26.96	39.84	45.05
Nonvested at the end of the period (in dollars per share)	$ 26.54	$ 37.94	$ 38.88	$ 26.54
Unrecognized compensation expense
Unrecognized stock-based compensation expense related to nonvested awards, net of estimated forfeitures	$ 47.9			$ 47.9
Weighted average period over which unrecognized compensation expense is expected to be recognized	1 year 6 months
Performance Shares 2019 Plan
Restricted stock activity
Granted (in shares)				782,931
Nonvested at the end of the period (in shares)	656,526			656,526

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Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.

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The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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