v3.8.0.1
Income Tax (Details) - USD ($)
$ / shares in Units, $ in Millions
 3 Months Ended
May 05, 2018
Apr. 29, 2017
Income Tax Disclosure [Abstract]    
Current income tax expense $ 3.0 $ 3.5
Unrecognized tax benefits 0.3 1.0
Expense related to other discrete items 0.4 0.7
Unrecognized tax benefit, interest and penalties accrued 0.5 0.7
Unrecognized tax benefit, release due to expiration of statute of limitations in non-U.S. jurisdictions 0.2 0.3
Unrecognized tax benefit, changes in prior year tax positions   0.6
Income Taxes [Line Items]    
Cash, cash equivalents and short-term investments 1,900.0  
Uncertain tax positions, decrease from the lapse of statutes of limitation in various jurisdictions during next 12 months 11.9  
Tax incentives, decrease in foreign taxes $ 0.7 $ 0.7
Tax incentives, effect on net income per share (less than) (in usd per share) $ 0.01 $ 0.01
Undistributed earnings of foreign subsidiaries $ 550.0  
Undistributed earnings of foreign subsidiaries which no deferred tax liability has been provided 430.0  
Foreign Subsidiaries    
Income Taxes [Line Items]    
Cash, cash equivalents and short-term investments 1,000.0  
Increase in tax expense in the event of undistributed earnings needed by parent company or no longer considered indefinitely reinvested outside of Bermuda $ 160.0