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Earnings Per Share (Tables)
6 Months Ended
Jun. 30, 2013
Earnings Per Share [Abstract]  
Earnings Per Share Table
   Effect of   
(Dollars in millions, except per share amounts)BasicDilutionDiluted
Three Months Ended June 30,      
2013      
Shareholders' net income $ 505  $ 505
Shares (in thousands):      
Weighted average  282,043    282,043
Common stock equivalents    5,043  5,043
Total shares  282,043  5,043  287,086
EPS$ 1.79$ (0.03)$ 1.76
2012      
Shareholders' net income $ 380  $ 380
Shares (in thousands):      
Weighted average  285,690    285,690
Common stock equivalents    4,857  4,857
Total shares  285,690  4,857  290,547
EPS$ 1.33$ (0.02)$ 1.31

   Effect of   
(Dollars in millions, except per share amounts)BasicDilutionDiluted
Six Months Ended June 30,      
2013      
Shareholders' net income $ 562  $ 562
Shares (in thousands):      
Weighted average  282,919    282,919
Common stock equivalents    5,248  5,248
Total shares  282,919  5,248  288,167
EPS$ 1.99$(0.04)$ 1.95
2012      
Shareholders' net income $ 751  $ 751
Shares (in thousands):      
Weighted average  285,425    285,425
Common stock equivalents    4,348  4,348
Total shares  285,425  4,348  289,773
EPS$ 2.63$ (0.04)$ 2.59
Antidilutive Options Table
  Three Months Ended Six Months Ended
  June 30, June 30,
(In millions) 20132012 20132012
Antidilutive options 1.82.4 1.83.1