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EPS
12 Months Ended
Dec. 31, 2011
EPS [Abstract]  
EPS

16. EPS

Basic EPS is based on the weighted-average number of DPL common shares outstanding during the year. Diluted EPS is based on the weighted-average number of DPL common and common-equivalent shares outstanding during the year, except in periods where the inclusion of such common-equivalent shares is anti-dilutive. Excluded from outstanding shares for these weighted-average computations are shares held by DP&L's Master Trust Plan for deferred compensation and unreleased shares held by DPL's ESOP.

The common-equivalent shares excluded from the calculation of diluted EPS, because they were anti-dilutive, were not material for the period January 1, 2011, through November 27, 2011 and the years ended December 31, 2010 and 2009. Effective with the Merger with AES, DPL is wholly-owned by AES and earnings per share information is no longer required.

The following illustrates the reconciliation of the numerators and denominators of the basic and diluted EPS computations:

$ and shares in millions except   January 1, 2011 through     For the years ended December 31,      
per share amounts   November 27, 2011   2010   2009
          Per         Per         Per
    Income Shares   Share   Income Shares   Share   Income Shares   Share
Basic EPS $ 150.5 114.5 $ 1.31 $ 290.3 115.6 $ 2.51 $ 229.1 112.9 $ 2.03
 
Effect of Dilutive                              
Securities:                              
Warrants     0.4         0.3         1.1    
Stock options, performance and                              
restricted shares     0.2         0.2         0.2    
 
Diluted EPS $ 150.5 115.1 $ 1.31 $ 290.3 116.1 $ 2.50 $ 229.1 114.2 $ 2.01