Quarterly report pursuant to Section 13 or 15(d)

Derivatives - Gains and Losses on Derivatives Designated as Fair Value Hedges (Details)

v3.19.3
Derivatives - Gains and Losses on Derivatives Designated as Fair Value Hedges (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Effect of Fair Value Hedges on Results of Operations [Abstract]        
Derivative $ 3,185 $ (1,299) $ 9,228 $ (5,250)
Hedged Item (3,201) 1,317 (9,233) 4,993
Interest rate risk on long-term debt        
Effect of Fair Value Hedges on Results of Operations [Abstract]        
Derivative 3,328 (1,129) 9,373 (4,303)
Hedged Item (3,342) 1,122 (9,392) 4,179
Interest rate and foreign currency risk on long-term debt        
Effect of Fair Value Hedges on Results of Operations [Abstract]        
Derivative (110) (182) (12) (927)
Hedged Item 111 207 31 795
Interest rate and foreign currency risk on long-term debt | Interest expense        
Effect of Fair Value Hedges on Results of Operations [Abstract]        
Derivative (59) (117) 108 (156)
Interest rate and foreign currency risk on long-term debt | Other income        
Effect of Fair Value Hedges on Results of Operations [Abstract]        
Derivative (53) (96) (142) (672)
Interest rate risk on AFS securities        
Effect of Fair Value Hedges on Results of Operations [Abstract]        
Derivative (33) 12 (133) (20)
Hedged Item 30 (12) 128 19
Accumulated Other Comprehensive Income (Loss) | Interest rate and foreign currency risk on long-term debt        
Effect of Fair Value Hedges on Results of Operations [Abstract]        
Derivative $ 2 $ 31 $ 22 $ (99)