Share-Based Compensation (Narrative) (Details) - USD ($)	12 Months Ended
	Feb. 01, 2020	Feb. 02, 2019	Feb. 03, 2018	Feb. 01, 2020	May 21, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation, maximum percentage of employee salary				10.00%
Share-based compensation, maximum value permitted to purchase, per year				$ 25,000
Percentage of common stock fair market value on plan	85.00%
Proceeds from exercise of stock options	$ 5,000,000	$ 5,000,000	$ 13,000,000
Stock Option Plans [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards vesting period description	Options for employees become exercisable in substantially equal annual installments over a three-year period, beginning with the first anniversary of the date of grant of the option, unless a shorter or longer duration is established at the time of the option grant.
Fair value of options vested	$ 6,000,000	8,000,000
Tax benefit realized from options exercised	1,000,000
Proceeds from exercise of stock options	$ 5,000,000
Restricted Stock and Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average expected award life (in years)	1 year
Award vesting period	3 years
Additional award vesting period	1 year
Fair value of awards	$ 5,000,000	$ 7,000,000	$ 15,000,000
Dividends	$ 0
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Additional award vesting period	1 year
Proceeds from exercise of stock options	$ 200,000
Performance Shares [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share Based Compensation Arrangement By Share Based Payment Award, Target Percentage of Equity Awards Earned Over Performance Period	200.00%
Performance Shares [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share Based Compensation Arrangement By Share Based Payment Award, Target Percentage of Equity Awards Earned Over Performance Period	0.00%
Nonvested Stock Options [Member] | Stock Option Plans [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost				3,000,000
Unrecognized compensation cost related to nonvested stock options, weighted-average period expected to be recognized	1 year 4 months 24 days
Nonvested Stock Options [Member] | Restricted Stock and Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost				$ 20,000,000
2007 Stock Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized under plan					14,000,000
Share-based compensation, expiration period	10 years
Options available for future grant	7,476,896			7,476,896
Options available for future grant at end of period	7,476,896
2013 ESPP [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average expected award life (in years)	1 year	1 year	1 year
Shares authorized under plan				3,000,000
Shares purchased	96,451	48,196
Options available for future grant	2,379,218			2,379,218
Options available for future grant at end of period	2,379,218