DERIVATIVES - Cumulative Basis Adjustment (Details) - USD ($) $ in Millions	Mar. 31, 2025	Dec. 31, 2024
Derivatives
Hedged Liability, Statement of Financial Position [Extensible Enumeration]	Long-term debt (including $117,248 and $112,719 as of March 31, 2025 and December 31, 2024, respectively, at fair value)	Long-term debt (including $117,248 and $112,719 as of March 31, 2025 and December 31, 2024, respectively, at fair value)
Long-term debt, carrying amount of hedged asset/liability	$ 152,782	$ 147,910
Long-term debt, cumulative fair value hedging adjustment included in the carrying amount, active	45	(1,051)
Long-term debt, cumulative fair value hedging adjustment included in the carrying amount, de-designated	(4,314)	(4,499)
Physical commodities inventories	20,100	11,400
Physical commodities inventories, cumulative basis adjustments	200	800
Amount of designated hedged items	27,700	12,900
Unallocated portfolio layer cumulative basis adjustments		(72)
Debt Securities Specifically Hedged
Derivatives
Debt securities AFS, carrying amount of hedged asset/liability	40,178	55,786
Debt securities AFS, cumulative fair value hedging adjustment included in the carrying amount, active	111	(348)
Debt securities AFS, cumulative fair value hedging adjustment included in the carrying amount, de-designated	(2)	(100)
Debt Securities Portfolio Layer Method
Derivatives
Debt securities AFS, carrying amount of hedged asset/liability	34,047	28,554
Debt securities AFS, cumulative fair value hedging adjustment included in the carrying amount, active	206	(193)
Debt securities AFS, cumulative fair value hedging adjustment included in the carrying amount, de-designated	(78)	(67)
Consumer loans
Derivatives
Debt securities AFS, carrying amount of hedged asset/liability	53,345	53,700
Debt securities AFS, cumulative fair value hedging adjustment included in the carrying amount, active	231	(224)
Debt securities AFS, cumulative fair value hedging adjustment included in the carrying amount, de-designated	0	0
Amount of designated hedged items	19,600	17,000
Unallocated portfolio layer cumulative basis adjustments	231	(224)
Corporate loans
Derivatives
Debt securities AFS, carrying amount of hedged asset/liability	3,733	4,269
Debt securities AFS, cumulative fair value hedging adjustment included in the carrying amount, active	20	(72)
Debt securities AFS, cumulative fair value hedging adjustment included in the carrying amount, de-designated	(39)	(12)
Amount of designated hedged items	2,600	3,000
Unallocated portfolio layer cumulative basis adjustments	$ 20	$ (72)