The following shows the calculation of Adjusted EPS and reconciles Adjusted EPS to earnings per diluted share in accordance with GAAP for the three months ended December 31, 2012 and 2011. The amounts presented below are presented after-tax and were determined using our effective tax rate, before discrete items, for the three months ended December 31, 2012 and 2011 of 34% and 22%, respectively:

   
Three Months Ended
December 31,
  2012         2011  
 
After tax impact of costs associated with closing the Lafarge acquisition and initial purchase accounting $ (1.9 ) $ -
After tax impact of costs associated with our lawsuit against the IRS (0.6 ) -
After tax impact of loss on debt retirement - (1.6 )
After tax impact of tax and related interest benefits - 2.8
After tax impact of loss on arbitration and litigation   (0.3 )   (7.0 )
Total Non-routine Items impact, net $ (2.8 ) $ (5.8 )
Diluted average shares outstanding for the three months ended December 31, 2012 49.2 44.4
Diluted earnings per share impact from Non-routine Items $ (0.06 ) $ (0.13 )
 
 
Three Months Ended
December 31,
  2012     2011  
Earnings per diluted share in accordance with generally accepted accounting principles $ 0.37 $ 0.07
Add back: Earnings per diluted share impact from Non-routine Items   0.06     0.13  
Adjusted EPS $ 0.43 $ 0.20

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