Derivative Instruments - Impact on Statements of Income, Fair Value Hedges (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Gains/(losses) recorded in income
Derivatives	$ (1,544)	$ (1,041)
Hedged items	1,905	1,488
Income statement impact	361	447
Income statement impact of excluded components
Amortization approach	(158)	(135)
Changes in fair value	386	401
OCI impact
Derivatives - Gains/(losses) recorded in OCI	55	37
Interest rate
Gains/(losses) recorded in income
Derivatives	63	41
Hedged items	230	292
Income statement impact	293	333
Income statement impact of excluded components
Amortization approach	0	0
Changes in fair value	321	302
OCI impact
Derivatives - Gains/(losses) recorded in OCI	0	0
Foreign exchange
Gains/(losses) recorded in income
Derivatives	395	247
Hedged items	(322)	(204)
Income statement impact	73	43
Income statement impact of excluded components
Amortization approach	(158)	(135)
Changes in fair value	74	43
OCI impact
Derivatives - Gains/(losses) recorded in OCI	55	37
Commodity
Gains/(losses) recorded in income
Derivatives	(2,002)	(1,329)
Hedged items	1,997	1,400
Income statement impact	(5)	71
Income statement impact of excluded components
Amortization approach	0	0
Changes in fair value	(9)	56
OCI impact
Derivatives - Gains/(losses) recorded in OCI	$ 0	$ 0