Annual report pursuant to Section 13 and 15(d)

Derivatives - Other Risk Management Derivatives (Details)

v3.10.0.1
Derivatives - Other Risk Management Derivatives (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Interest rate lock commitments      
Derivative Instruments, Gain (Loss) [Line Items]      
Gain (loss) on derivatives not designated as hedging $ 47 $ 220 $ 533
Mortgage banking income | Interest rate risk on mortgage activities      
Derivative Instruments, Gain (Loss) [Line Items]      
Gain (loss) on derivatives not designated as hedging (107) 8 461
Other income | Credit risk on loans      
Derivative Instruments, Gain (Loss) [Line Items]      
Gain (loss) on derivatives not designated as hedging 9 (6) (107)
Other income | Interest rate and foreign currency risk on ALM activities      
Derivative Instruments, Gain (Loss) [Line Items]      
Gain (loss) on derivatives not designated as hedging $ 1,010 $ (36) $ (754)