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Comprehensive Income (Tables)
3 Months Ended
Mar. 31, 2012
Comprehensive Income [Abstract]  
Accumulated other comprehensive loss, net of tax
The components of accumulated other comprehensive loss, net of tax are as follows:

        
        
   
March 31,
  
December 31,
 
($ in thousands)
 
2012
  
2011
 
        
Pension costs
 $567,427  $575,163 
Postretirement costs
  42,403   41,811 
Deferred taxes on pension and OPEB costs
  (227,283)  (230,161)
All other
  149   150 
   $382,696  $386,963 
          
          
Other comprehensive income (loss)
Our other comprehensive income for the three months ended March 31, 2012 and 2011 is as follows:

      
2012
    
   
Before-Tax
  
Tax Expense/
 
Net-of-Tax
 
($ in thousands)
 
Amount
  
(Benefit)
  
Amount
 
           
Amortization of pension and postretirement costs
 $7,145  $2,878  $4,267 
All other
  -   -   - 
Other comprehensive income
 $7,145  $2,878  $4,267 
              
        2011     
   
Before-Tax
  
Tax Expense/
 
Net-of-Tax
 
   
Amount
  
(Benefit)
  
Amount
 
              
Amortization of pension and postretirement costs
 $3,334  $1,199  $2,135 
All other
  (750)  (270)  (480)
Other comprehensive income
 $2,584  $929  $1,655