Share-Based Compensation (Information about Stock Options Outstanding and Exercisable) (Details) - $ / shares shares in Thousands	9 Months Ended
	Oct. 31, 2020	Feb. 01, 2020
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding, Number of Shares	3,705	2,881
Options outstanding, weighted-average remaining contractual life	5 years 8 months 12 days
Options Outstanding, Weighted-Average Exercise Price	$ 46.16	$ 54.21
Options Exercisable, Number of Shares	2,560
Options Exercisable, Weighted-Average Exercise Price	$ 53.90
$18.84 to $23.09 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices, Lower Limit	18.84
Range of Exercise Prices, Upper Limit	$ 23.09
Options Outstanding, Number of Shares	1,035
Options outstanding, weighted-average remaining contractual life	8 years 2 months 12 days
Options Outstanding, Weighted-Average Exercise Price	$ 21.31
Options Exercisable, Number of Shares	150
Options Exercisable, Weighted-Average Exercise Price	$ 19.57
$24.75 to $36.51 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices, Lower Limit	24.75
Range of Exercise Prices, Upper Limit	$ 36.51
Options Outstanding, Number of Shares	376
Options outstanding, weighted-average remaining contractual life	2 years 3 months 18 days
Options Outstanding, Weighted-Average Exercise Price	$ 32.13
Options Exercisable, Number of Shares	373
Options Exercisable, Weighted-Average Exercise Price	$ 32.10
$44.78 to $45.75 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices, Lower Limit	44.78
Range of Exercise Prices, Upper Limit	$ 45.75
Options Outstanding, Number of Shares	554
Options outstanding, weighted-average remaining contractual life	5 years 1 month 6 days
Options Outstanding, Weighted-Average Exercise Price	$ 44.91
Options Exercisable, Number of Shares	464
Options Exercisable, Weighted-Average Exercise Price	$ 44.94
$46.64 to $62.11 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices, Lower Limit	46.64
Range of Exercise Prices, Upper Limit	$ 62.11
Options Outstanding, Number of Shares	870
Options outstanding, weighted-average remaining contractual life	5 years 3 months 18 days
Options Outstanding, Weighted-Average Exercise Price	$ 60.12
Options Exercisable, Number of Shares	704
Options Exercisable, Weighted-Average Exercise Price	$ 60.50
$63.33 to $73.21 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices, Lower Limit	63.33
Range of Exercise Prices, Upper Limit	$ 73.21
Options Outstanding, Number of Shares	870
Options outstanding, weighted-average remaining contractual life	5 years
Options Outstanding, Weighted-Average Exercise Price	$ 68.60
Options Exercisable, Number of Shares	869
Options Exercisable, Weighted-Average Exercise Price	$ 68.61