Share-Based Compensation (Information about Stock Options Outstanding and Exercisable) (Details) - $ / shares shares in Thousands	3 Months Ended
	Apr. 29, 2017	Jan. 28, 2017
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding, Number of Shares	2,985	2,806
Options outstanding, weighted-average remaining contractual life	6 years 8 months 12 days
Options Outstanding, Weighted-Average Exercise Price	$ 49.19	$ 42.61
Options Exercisable, Number of Shares	1,935
Options Exercisable, Weighted-Average Exercise Price	$ 39.23
$9.85 to $24.75 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices, Lower Limit	9.85
Range of Exercise Prices, Upper Limit	$ 24.75
Options Outstanding, Number of Shares	551
Options outstanding, weighted-average remaining contractual life	2 years 4 months 24 days
Options Outstanding, Weighted-Average Exercise Price	$ 14.37
Options Exercisable, Number of Shares	551
Options Exercisable, Weighted-Average Exercise Price	$ 14.37
$30.92 to $45.08 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices, Lower Limit	30.92
Range of Exercise Prices, Upper Limit	$ 45.08
Options Outstanding, Number of Shares	761
Options outstanding, weighted-average remaining contractual life	5 years 9 months 18 days
Options Outstanding, Weighted-Average Exercise Price	$ 38.50
Options Exercisable, Number of Shares	761
Options Exercisable, Weighted-Average Exercise Price	$ 38.50
$55.02 to $62.11 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices, Lower Limit	55.02
Range of Exercise Prices, Upper Limit	$ 62.11
Options Outstanding, Number of Shares	700
Options outstanding, weighted-average remaining contractual life	7 years 4 months 24 days
Options Outstanding, Weighted-Average Exercise Price	$ 61.26
Options Exercisable, Number of Shares	467
Options Exercisable, Weighted-Average Exercise Price	$ 61.43
$63.79 to $73.21 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices, Lower Limit	63.79
Range of Exercise Prices, Upper Limit	$ 73.21
Options Outstanding, Number of Shares	973
Options outstanding, weighted-average remaining contractual life	9 years 4 months 24 days
Options Outstanding, Weighted-Average Exercise Price	$ 68.57
Options Exercisable, Number of Shares	156
Options Exercisable, Weighted-Average Exercise Price	$ 64.02