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Other Income (Expense), Net
 3 Months Ended
Mar. 31, 2014
Other Income and Expenses [Abstract]  
Other Income (Expense), Net
Other Income (Expense), Net
Other income (expense), net consisted of the following, for each period presented:
 
Quarter Ended
 
March 31,
 
2014
 
2013
Interest income
$
0.3

 
$
0.1

Unrealized gains on financial derivatives1
0.9

 
0.4

Realized gains on investments
0.2

 
0.5

All other, net
0.5

 
—

Other non-operating income, net
$
1.9

 
$
1.0

______________________
1 
See “Hedges Relating to the Convertible Notes” in Note 8 for discussion of such instruments.