Quarterly report pursuant to Section 13 or 15(d)

Securities - Gains and Losses on Sales of AFS Debt Securities (Details)

v3.7.0.1
Securities - Gains and Losses on Sales of AFS Debt Securities (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Available-for-sale Securities, Gross Realized Gain (Loss) [Abstract]    
Net gains on sales of AFS debt securities $ 52 $ 190
Debt securities    
Available-for-sale Securities, Gross Realized Gain (Loss) [Abstract]    
Gross gains 54 203
Gross losses (2) (13)
Net gains on sales of AFS debt securities 52 190
Income tax expense attributable to realized net gains on sales of AFS debt securities $ 20 $ 72