Derivative Instruments - Impact on Statements of Income, Fair Value Hedges (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Gains/(losses) recorded in income
Derivatives	$ (2,863)	$ 827	$ 3,503
Hedged items	4,744	177	(2,437)
Income statement impact	1,881	1,004	1,066
Income statement impact of excluded components
Amortization approach	(696)	(532)	(601)
Changes in fair value	1,808	1,046	921
OCI impact
Derivatives - Gains/(losses) recorded in OCI	84	(115)	(134)
Interest rate
Gains/(losses) recorded in income
Derivatives	(88)	711	1,554
Hedged items	1,360	(65)	(1,248)
Income statement impact	1,272	646	306
Income statement impact of excluded components
Amortization approach	0	0	0
Changes in fair value	1,250	699	157
OCI impact
Derivatives - Gains/(losses) recorded in OCI	0	0	0
Foreign exchange
Gains/(losses) recorded in income
Derivatives	1,077	(177)	722
Hedged items	(743)	402	(483)
Income statement impact	334	225	239
Income statement impact of excluded components
Amortization approach	(696)	(532)	(601)
Changes in fair value	334	225	239
OCI impact
Derivatives - Gains/(losses) recorded in OCI	84	(115)	(134)
Commodity
Gains/(losses) recorded in income
Derivatives	(3,852)	293	1,227
Hedged items	4,127	(160)	(706)
Income statement impact	275	133	521
Income statement impact of excluded components
Amortization approach	0	0	0
Changes in fair value	224	122	525
OCI impact
Derivatives - Gains/(losses) recorded in OCI	$ 0	$ 0	$ 0