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DEBT (Tables)
9 Months Ended
Sep. 30, 2012
Debt Disclosure [Abstract]  
Components of long-term debt
The components of long-term debt were as follows:
 
(Dollars in millions)
 
September 30, 2012
 
December 31, 2011
Principal Value:
 
 

 
 

3.50% Notes due 2014
 
$
500.0

 
$
500.0

4.90% Notes due 2019
 
700.0

 
700.0

5.90% Notes due 2039
 
300.0

 
300.0

Subtotal
 
1,500.0

 
1,500.0

Adjustments to Principal Value:
 
 

 
 

Unamortized basis adjustment for terminated interest rate swaps
 
28.3

 
35.3

Unamortized bond discount
 
(2.9
)
 
(3.4
)
Long-term debt
 
$
1,525.4

 
$
1,531.9

Components of interest expense-net
 
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
(In millions)
 
2012
 
2011
 
2012
 
2011
Interest expense
 
$
18.3

 
$
15.6

 
$
53.3

 
$
44.5

Interest income
 
(1.4
)
 
(2.5
)
 
(4.3
)
 
(6.1
)
Interest expense-net
 
$
16.9

 
$
13.1

 
$
49.0

 
$
38.4