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Interest and Other Expense, net
 12 Months Ended
Jan. 31, 2017
Interest and Other Income, net [Abstract]  
Interest and Other Expense, net
Interest and Other Expense, net

Interest and other expense, net, consists of the following:
 
Fiscal Year Ended January 31,
 
2017
 
2016
 
2015
Interest and investment expense, net
$
(29.7
)
 
$
(33.9
)
 
$
(13.2
)
Loss on foreign currency
(3.3
)
 
—

 
(3.9
)
Gain (loss) on strategic investments
0.3

 
3.8

 
(23.3
)
Other income
8.5

 
8.5

 
2.7

Interest and other expense, net
$
(24.2
)
 
$
(21.6
)
 
$
(37.7
)