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Earnings Per Common Share Computation
 3 Months Ended
Mar. 31, 2012
Earnings Per Common Share Computation [Abstract]  
Earnings Per Common Share Computation

8. EARNINGS PER COMMON SHARE COMPUTATION

Detail supporting the computation of basic and diluted earnings per common share was as follows for the three months ended March 31, 2012 and 2011:

For the three months ended
March 31,
2012 2011
(dollars in millions, number
of shares in thousands)

Net income available for common stockholders

 $ 248 $ 315

 

 

 

 

Weighted average outstanding shares of common stock used to compute basic earnings per common share

 163,717 167,271

Dilutive effect of:

Employee stock options

 884 918

Restricted stock

 1,487 1,345

 

 

 

 

Shares used to compute diluted earnings per common share

 166,088 169,534

 

 

 

 

Basic earnings per common share

 $ 1.51 $ 1.88

 

 

 

 

Diluted earnings per common share

 $ 1.49 $ 1.86

 

 

 

 

Number of antidilutive stock options and restricted stock excluded from computation

 1,077 2,743