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Accumulated Other Comprehensive Income (Tables)
6 Months Ended
Jun. 30, 2012
Activity of the Components of Other Comprehensive Income and Accumulated Other Comprehensive Income

The activity of the components of other comprehensive income and accumulated other comprehensive income for the six months ended June 30, 2012 and 2011 was as follows:

 

               
   Total Other Total Accumulated Other 
   Comprehensive Income Comprehensive Income 
   PretaxTaxNetBeginningNetEnding
($ in millions) ActivityEffectActivityBalanceActivityBalance
2012             
Unrealized holding losses on available-for-sale securities arising              
 during period$(4) 1 (3)       
Reclassification adjustment for net gains included in net income (10) 4 (6)       
Net unrealized gains on available-for-sale securities (14) 5 (9) 485 (9) 476 
               
Unrealized holding gains on cash flow hedge derivatives arising             
 during period 25 (9) 16       
Reclassification adjustment for net gains on cash flow             
 hedge derivatives included in net income (41) 14 (27)       
Net unrealized gains on cash flow hedge derivatives (16) 5 (11) 80 (11) 69 
               
Defined benefit plans:             
 Net actuarial loss 7 (3) 4       
Defined benefit plans, net 7 (3) 4 (95) 4 (91) 
Total$(23) 7 (16) 470 (16) 454 

               
   Total Other Total Accumulated Other 
   Comprehensive Income Comprehensive Income 
   PretaxTaxNetBeginningNetEnding
($ in millions) ActivityEffectActivityBalanceActivityBalance
2011             
Unrealized holding gains on available-for-sale securities arising              
 during period$135 (47) 88       
Reclassification adjustment for net gains included in net income (17) 6 (11)       
Net unrealized gains on available-for-sale securities 118 (41) 77 321 77 398 
               
Unrealized holding gains on cash flow hedge derivatives arising             
 during period 32 11 21       
Reclassification adjustment for net gains on cash flow             
 hedge derivatives included in net income (31) (11) (20)       
Net unrealized gains on cash flow hedge derivatives 1 0 1 67 1 68 
               
Defined benefit plans:             
 Net actuarial loss 6 (2) 4       
Defined benefit plans, net 6 (2) 4 (74) 4 (70) 
Total$125 (43) 82 314 82 396