Stock-Based Awards - RSU's and Performance RSU's (Details)	3 Months Ended
	Apr. 28, 2018 $ / shares shares
RSUs
Share Based Compensation Arrangement By Share Based Payment Award Non Option Equity Instruments Outstanding [Roll Forward]
Beginning balance (in shares) | shares	133,896
Granted (in shares) | shares	39,612
Share units vested (in shares) | shares	(3,099)
Forfeited or canceled (in shares) | shares	(3,299)
Ending balance (in shares) | shares	167,110
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value [Roll Forward]
Beginning balance (in dollars per shares) | $ / shares	$ 71.81
Granted (in dollars per shares) | $ / shares	106.36
Share units vested (in dollars per shares) | $ / shares	76.98
Forfeited or canceled (in dollars per shares) | $ / shares	59.10
Ending balance (in dollars per shares) | $ / shares	$ 80.16
Performance RSUs
Share Based Compensation Arrangement By Share Based Payment Award Non Option Equity Instruments Outstanding [Roll Forward]
Beginning balance (in shares) | shares	390,327
Granted (in shares) | shares	218,628
Share units vested (in shares) | shares	0
Forfeited or canceled (in shares) | shares	(10,437)
Ending balance (in shares) | shares	598,518
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value [Roll Forward]
Beginning balance (in dollars per shares) | $ / shares	$ 80.52
Granted (in dollars per shares) | $ / shares	106.19
Share units vested (in dollars per shares) | $ / shares	0.00
Forfeited or canceled (in dollars per shares) | $ / shares	81.55
Ending balance (in dollars per shares) | $ / shares	$ 89.88