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Shareholders' Equity (Tables)
12 Months Ended
Dec. 31, 2012
Shareholders' Equity  
Components of accumulated other comprehensive income (loss), net of tax

The following table presents the components of accumulated other comprehensive income, net of tax (subsequent to the adjustment for the new accounting standard):

 
  December 31,  
 
  2012   2011  
 
  (in millions)
 

Net unrealized securities gains

  $ 1,312   $ 883  

Net unrealized derivatives losses

    (2 )   (11 )

Foreign currency translation

    (25 )   (46 )

Defined benefit plans

    (91 )   (75 )
           

Total

  $ 1,194   $ 751