Accounting for Share-Based Payments (Details 1) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Feb. 01, 2019 USD ($) $ / shares shares
Shares
Outstanding, beginning balance, shares (in shares) | shares	2,815
Stock options granted (in shares) | shares	1,021
Stock options canceled, forfeited, or expired (in shares) | shares	(385)
Stock options exercised (in shares) | shares	(760)
Outstanding, ending balance, shares (in shares) | shares	2,691
Stock options vested and expected to vest, shares (in shares) | shares	2,610
Stock options exercisable (in shares) | shares	1,719
Weighted-Average Exercise Price Per Share
Outstanding, beginning balance, weighted-average exercise price per share (in dollars per share) | $ / shares	$ 60.84
Stock options granted, weighted-average exercise price per share (in dollars per share) | $ / shares	90.75
Stock options canceled, forfeited, or expired, weighted-average exercise price per share (in dollars per share) | $ / shares	79.63
Stock options exercised, weighted-average exercise price per share (in dollars per share) | $ / shares	55.95
Outstanding, ending balance, weighted-average exercise price per share (in dollars per share) | $ / shares	70.87
Stock options vested and expected to vest, weighted-average exercise price per share (in dollars per share) | $ / shares	70.18
Stock options exercisable, weighted-average exercise price per share (in dollars per share) | $ / shares	$ 60.49
Options, Additional Disclosures
Outstanding, weighted-average remaining term	7 years 1 month 6 days
Outstanding, ending balance, aggregate intrinsic value | $	$ 72,613
Stock options vested and expected to vest, weighted-average remaining term	7 years 15 days
Stock options vested and expected to vest, aggregate intrinsic value | $	$ 72,067
Stock options exercisable, weighted-average remaining term	6 years 11 days
Stock options exercisable, aggregate intrinsic value | $	$ 62,943