Quarterly report pursuant to Section 13 or 15(d)

Derivatives - Other Risk Management Derivatives (Details)

v3.7.0.1
Derivatives - Other Risk Management Derivatives (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Other        
Derivative Instruments, Gain (Loss) [Line Items]        
Gain (loss) on derivatives not designated as hedging $ 4 $ 14 $ 5 $ 40
Interest rate lock commitments        
Derivative Instruments, Gain (Loss) [Line Items]        
Gain (loss) on derivatives not designated as hedging 60 177 116 329
Mortgage banking income | Interest rate risk on mortgage banking income        
Derivative Instruments, Gain (Loss) [Line Items]        
Gain (loss) on derivatives not designated as hedging 55 279 31 825
Other income | Credit risk on loans        
Derivative Instruments, Gain (Loss) [Line Items]        
Gain (loss) on derivatives not designated as hedging (1) (31) (3) (96)
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 238 (824) (52) (1,708)
Personnel expense | Price risk on restricted stock awards        
Derivative Instruments, Gain (Loss) [Line Items]        
Gain (loss) on derivatives not designated as hedging $ 24 $ (27) $ 128 $ (768)