Quarterly report pursuant to Section 13 or 15(d)

Derivatives - Economic Hedges (Details)

v3.5.0.2
Derivatives - Economic Hedges (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Other        
Derivative Instruments, Gain (Loss) [Line Items]        
Gain (loss) on derivatives not designated as hedging $ 0 $ 22 $ 40 $ 15
Interest rate lock commitments        
Derivative Instruments, Gain (Loss) [Line Items]        
Gain (loss) on derivatives not designated as hedging 185 184 514 611
Mortgage banking income | Interest rate risk on mortgage banking income        
Derivative Instruments, Gain (Loss) [Line Items]        
Gain (loss) on derivatives not designated as hedging 57 474 882 380
Other income | Credit risk on loans        
Derivative Instruments, Gain (Loss) [Line Items]        
Gain (loss) on derivatives not designated as hedging (7) 24 (103) (34)
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 (262) (527) (1,970) (202)
Personnel expense | Price risk on restricted stock awards        
Derivative Instruments, Gain (Loss) [Line Items]        
Gain (loss) on derivatives not designated as hedging $ 199 $ (229) $ (569) $ (473)