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Earnings per Common Share (Tables)
9 Months Ended
Sep. 30, 2012
Earnings per Common Share  
Schedule of basic and diluted earnings per common share
  Three Months Ended
September 30,
  Nine Months Ended
September 30,
 
  2012   2011   2012   2011
 
  (Dollars in millions except per share amounts and shares in thousands)

Income (Numerator):

                       

Net income

  $ 270     138     544     464

Earnings applicable to non-vested restricted stock

            (1)     (2)
                 

Net income applicable to common stock for computing basic earnings per common share

    270     138     543     462
                 

Net income as adjusted for purposes of computing diluted earnings per common share

  $ 270     138     543     462
                 

Shares (Denominator):

                       

Weighted average number of shares:

                       

Outstanding during period

    622,769     613,271     621,370     506,452

Non-vested restricted stock

    (2,541)     (1,989)     (2,582)     (2,052)

Non-vested restricted stock units

    920     995     960     519
                 

Weighted average shares outstanding for computing basic earnings per common share

    621,148     612,277     619,748     504,919

Incremental common shares attributable to dilutive securities:

                       

Shares issuable under convertible securities

    13     13     13     13

Shares issuable under incentive compensation plans

    2,135     1,396     2,067     1,131
                 

Number of shares as adjusted for purposes of computing diluted earnings per common share

    623,296     613,686     621,828     506,063
                 

Earnings per common share:

                       

Basic

  $ .43     .22     .88     .91

Diluted

  $ .43     .22     .87     .91