Quarterly report pursuant to Section 13 or 15(d)

Securities - Realized Gains and Losses (Details)

v2.4.0.8
Securities - Realized Gains and Losses (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Available-for-sale Securities, Gross Realized Gain (Loss) [Abstract]        
Net gains on sales of AFS debt securities $ 382 $ 457 $ 759 $ 525
Debt Securities [Member]
       
Available-for-sale Securities, Gross Realized Gain (Loss) [Abstract]        
Gross gains 383 474 761 543
Gross losses (1) (17) (2) (18)
Net gains on sales of AFS debt securities 382 457 759 525
Income tax expense attributable to realized net gains on sales of AFS debt securities $ 145 $ 169 $ 288 $ 194