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9. Other Income and Expenses (Tables)
 9 Months Ended
Sep. 30, 2012
Other Income and Expenses [Abstract]  
Schedule of other income (expense), net
Other (income) expense, net includes the following components (in millions):

 
Three Months Ended
 
Nine Months Ended
 
September 30,
 
September 30,
 
2012
 
2011
 
2012
 
2011
Interest and investment (income) expense
$
(1.0
)
 
$
0.1

 
$
(7.9
)
 
$
(5.5
)
Net realized gains on investments
(1.1
)
 
(0.1
)
 
(8.5
)
 
(0.3
)
Miscellaneous other (income) expense items, net
0.6

 
(0.5
)
 
1.7

 
(0.1
)
Other (income) expense, net
$
(1.5
)
 
$
(0.5
)
 
$
(14.7
)
 
$
(5.9
)