v2.4.0.6
Other Comprehensive Income, Cumulative OCI Balances (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Dec. 31, 2008
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]        
Cumulative other comprehensive income, Translation adjustments $ 90 $ 112 $ 67 $ (6)
Cumulative other comprehensive income, Securities available for sale 4,413 5,066 3,541 (6,212)
Cumulative other comprehensive income, Derivatives and hedging activities 490 739 650 871
Cumulative other comprehensive income, Defined benefit pension plans (1,786) (1,179) (1,249) (1,522)
Cumulative other comprehensive income 3,207 4,738 3,009 (6,869)
Translation adjustments, net change (24) 57 66  
Securities available for sale, Net change (663) 1,538 9,811  
Derivatives and hedging activities, Net change (249) 89 (221)  
Cumulative other comprehensive income, Defined benefit pension plans, Net change (607) 70 273  
Cumulative other comprehensive income, Net change (1,531) 1,729 9,931  
Cumulative other comprehensive income [Member]
       
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]        
Cumulative effect from change in accounting for other-than-temporary impairment on debt securities     (53) (53)
Translation adjustments, net change (22) 45 73  
Securities available for sale, Net change (653) 1,525 9,806  
Derivatives and hedging activities, Net change (249) 89 (221)  
Cumulative other comprehensive income, Defined benefit pension plans, Net change $ (607) $ 70 $ 273