Quarterly report [Sections 13 or 15(d)]

Derivatives - Gains and Losses on Derivatives and Hedged Items Designated in Fair Value Hedges (Details)

v3.25.3
Derivatives - Gains and Losses on Derivatives and Hedged Items Designated in Fair Value Hedges (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Effect of Fair Value Hedges on Results of Operations [Abstract]        
Derivative $ (731) $ (1,275) $ (3,745) $ (1,823)
Hedged Item 728 1,274 3,658 1,791
Interest rate risk on long-term debt        
Effect of Fair Value Hedges on Results of Operations [Abstract]        
Derivative 300 6,091 4,144 2,501
Hedged Item (289) (6,090) (4,136) (2,519)
Interest rate and foreign currency risk        
Effect of Fair Value Hedges on Results of Operations [Abstract]        
Derivative 125 (576) (242) 47
Hedged Item (126) 581 241 (33)
Interest rate and foreign currency risk | Interest Income        
Effect of Fair Value Hedges on Results of Operations [Abstract]        
Derivative 4 (6) (3) 11
Interest rate and foreign currency risk | Market making and similar activities        
Effect of Fair Value Hedges on Results of Operations [Abstract]        
Derivative 123 (577) (235) 20
Interest rate risk on available-for-sale securities        
Effect of Fair Value Hedges on Results of Operations [Abstract]        
Derivative (376) (6,453) (5,569) (3,648)
Hedged Item 363 6,446 5,475 3,620
Price risk on commodity inventory | Interest Income        
Effect of Fair Value Hedges on Results of Operations [Abstract]        
Derivative (780) (337) (2,078) (723)
Hedged Item 780 337 2,078 723
Accumulated Other Comprehensive Income (Loss) | Interest rate and foreign currency risk        
Effect of Fair Value Hedges on Results of Operations [Abstract]        
Derivative $ (2) $ 7 $ (4) $ 16