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Other Income (Expense), Net (Tables)
 3 Months Ended
Mar. 31, 2012
Other Income and Expenses [Abstract]  
Other income (expense), net
Other income (expense), net consisted of the following, for each period presented:
 
Quarter Ended
 
March 31,
 
2012
 
2011
Interest income
$
0.1

 
$
0.1

Unrealized gains on financial derivatives1
0.5

 
1.7

All other, net
0.1

 
(0.1
)
Other non-operating income (expense), net
$
0.7

 
$
1.7

______________________
1 
See “Derivative Financial Instruments” in Note 1 for a discussion of accounting policy for such instruments.