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Interest Expense (Tables)
3 Months Ended
Mar. 31, 2012
Interest Expense  
Components of net interest expense

 

 

 

Three Months Ended March 31,

In millions

 

2012

 

2011

 

 

 

 

 

 

 

Interest expense

 

$

133

 

 

$

135

 

Interest income

 

(1

)

 

(1

)

Interest expense, net

 

$

132

 

 

$

134