Annual report pursuant to Section 13 and 15(d)

Securities - Realized Gains and Losses (Details)

v3.3.1.900
Securities - Realized Gains and Losses (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Available-for-sale Securities, Gross Realized Gain (Loss) [Abstract]      
Net gains on sales of AFS debt securities $ 1,091 $ 1,354 $ 1,271
Debt securities      
Available-for-sale Securities, Gross Realized Gain (Loss) [Abstract]      
Gross gains 1,118 1,366 1,302
Gross losses (27) (12) (31)
Net gains on sales of AFS debt securities 1,091 1,354 1,271
Income tax expense attributable to realized net gains on sales of AFS debt securities $ 415 $ 515 $ 470