Annual report pursuant to Section 13 and 15(d)

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

v3.20.4
Securities - Gains and Losses on Sales of AFS Debt Securities (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Available-for-sale Securities, Gross Realized Gain (Loss) [Abstract]      
Gross gains $ 423 $ 336 $ 169
Gross losses (12) (119) (15)
Net gains on sales of AFS debt securities 411 217 154
Income tax expense attributable to realized net gains on sales of AFS debt securities $ 103 $ 54 $ 37