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Interest And Other Income, net (Tables)
 12 Months Ended
Jan. 31, 2013
Interest and Other Income, net [Abstract]  
Interest and Other Income
Interest and other income, net, consists of the following:

 
Fiscal Year Ended January 31,
 
2013
 
2012
 
2011
Interest and investment income, net (1)
$
4.9

 
$
5.4

 
$
8.9

Gain (loss) on foreign currency
1.2

 
(1.1
)
 
(14.0
)
(Loss) gain on strategic investments (1)
(4.0
)
 
0.3

 
2.0

Other income
2.0

 
2.7

 
3.7

Interest and other income, net
$
4.1

 
$
7.3

 
$
0.6