Quarterly report pursuant to Section 13 or 15(d)

Income Taxes (Details)

v3.7.0.1
Income Taxes (Details) - USD ($)
$ in Millions
3 Months Ended
Apr. 29, 2017
Apr. 30, 2016
Income Taxes    
Effective income tax rate (as a percent) 70.20% 63.70%
Accounting Standards Update 2016-09 [Member] | Measurement period adjustments    
Income Taxes    
Tax deficiencies related vesting of stock-based awards $ 2.2