v3.7.0.1
Debt Long-term Debt, excluding current maturities (Tables)
6 Months Ended
Jul. 29, 2017
Debt Instrument [Line Items]  
Schedule of Long-term Debt Instruments [Table Text Block]
 
July 29, 2017
 
July 30, 2016
 
January 28, 2017
2019 Senior Notes principal amount
$
350.0

 
$
350.0

 
$
350.0

2021 Senior Notes principal amount
475.0

 
475.0

 
475.0

Less: Unamortized debt financing costs
(8.6
)
 
(11.5
)
 
(10.0
)
Long-term debt, net
$
816.4

 
$
813.5

 
$
815.0