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Warranty reserve (Tables)
 3 Months Ended
Apr. 29, 2017
Other Liabilities Disclosure [Abstract]  
Other Liabilities
The warranty reserve for diamond and gemstone guarantee, included in accrued expenses and other current liabilities and other non-current liabilities, is as follows:
 
 
13 weeks ended
(in millions)
 
April 29, 2017
 
April 30, 2016
Warranty reserve, beginning of period
 
$
40.0

 
$
41.9

Warranty expense
 
2.3

 
2.9

Utilized(1)
 
(3.1
)
 
(3.5
)
Warranty reserve, end of period
 
$
39.2

 
$
41.3


(1)  
Includes impact of foreign exchange translation.
(in millions)
April 29, 2017
 
January 28, 2017
 
April 30, 2016
Disclosed as:
 
 
 
 
 
Current liabilities
$
12.6

 
$
13.0

 
$
12.4

Non-current liabilities
26.6

 
27.0

 
28.9

Total warranty reserve
$
39.2

 
$
40.0

 
$
41.3