Quarterly report pursuant to Section 13 or 15(d)

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

v3.21.2
Derivatives - Gains and Losses on Derivatives Designated as Fair Value Hedges (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Effect of Fair Value Hedges on Results of Operations [Abstract]        
Derivative $ 1,626 $ 174 $ (1,224) $ 10,663
Hedged Item (1,634) (304) 1,244 (10,729)
Interest rate risk on long-term debt        
Effect of Fair Value Hedges on Results of Operations [Abstract]        
Derivative 3,484 475 (4,579) 10,809
Hedged Item (3,454) (600) 4,548 (10,876)
Interest rate and foreign currency risk on long-term debt        
Effect of Fair Value Hedges on Results of Operations [Abstract]        
Derivative 5 60 (23) 565
Hedged Item (5) (60) 21 (551)
Interest rate and foreign currency risk on long-term debt | Interest expense        
Effect of Fair Value Hedges on Results of Operations [Abstract]        
Derivative (17) (3) (51) 731
Interest rate and foreign currency risk on long-term debt | Market making and similar activities        
Effect of Fair Value Hedges on Results of Operations [Abstract]        
Derivative 23 63 31 (178)
Interest rate risk on AFS securities        
Effect of Fair Value Hedges on Results of Operations [Abstract]        
Derivative (1,863) (361) 3,378 (711)
Hedged Item 1,825 356 (3,325) 698
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 $ (1) $ 0 $ (3) $ 12