Share-Based Compensation (Options Granted Under Stock Option Plans) (Details) shares in Thousands	12 Months Ended
	Jan. 30, 2016 $ / shares shares
Number of Shares
Options outstanding at beginning of year | shares	5,569
Granted | shares	694
Exercised | shares	(2,511)
Expired or cancelled | shares	(58)
Options outstanding at end of year | shares	3,694
Options exercisable at end of year | shares	2,495
Options vested and expected to vest | shares	3,662
Weighted-Average Exercise Price
Options outstanding at beginning of year | $ / shares	$ 25.89
Granted | $ / shares	62.29
Exercised | $ / shares	25.50
Expired or cancelled | $ / shares	49.17
Options outstanding at end of year | $ / shares	32.62
Options exercisable at end of year | $ / shares	22.56
Options vested and expected to vest | $ / shares	$ 32.40
Options outstanding, Weighted-average remaining contractual life	5 years 7 months 6 days
Otions exercisable at end of year, Weighted-average remaining contractual life	4 years 1 month 6 days
Options vested and expected to vest, Weighted-average remaining contractual life	5 years 6 months