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Net Income/(Loss) Per Common Share (Tables)
 3 Months Ended
Mar. 31, 2013
Earnings Per Share [Abstract]  
Reconciliation of Net Income/(Loss) to Net Income/(Loss) Available to Common Shareholders
(In millions, except per share data)
 
2013
 
2012
Net income
 

$352

 

$250

Preferred dividends
 
(9
)
 
(3
)
Dividends and undistributed earnings allocated to unvested shares
 
(3
)
 
(2
)
Net income available to common shareholders
 

$340

 

$245

Average basic common shares
 
536

 
533

Effect of dilutive securities:
 
 
 
 
Stock options
 
1

 
1

Restricted stock
 
3

 
2

Average diluted common shares
 
540

 
536

Net income per average common share - diluted
 

$0.63

 

$0.46

Net income per average common share - basic
 

$0.64

 

$0.46