Quarterly report pursuant to Section 13 or 15(d)

Securities - Realized Gains and Losses (Details)

v3.4.0.3
Securities - Realized Gains and Losses (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Available-for-sale Securities, Gross Realized Gain (Loss) [Abstract]    
Net gains on sales of AFS debt securities $ 226 $ 268
Debt securities    
Available-for-sale Securities, Gross Realized Gain (Loss) [Abstract]    
Gross gains 237 275
Gross losses (11) (7)
Net gains on sales of AFS debt securities 226 268
Income tax expense attributable to realized net gains on sales of AFS debt securities $ 86 $ 102