DERIVATIVES - Derivative Mark-to-Market (MTM) Receivables/Payables (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Assets
Derivative receivables	$ 387,374	$ 444,987
Less: Netting agreements to assets	(308,431)	(346,545)
Less: Netting of cash collateral received	(21,226)	(23,136)
Net receivables included on consolidated balance sheet	57,717	75,306
Less: Cash collateral received	(563)	(1,455)
Less: Non-cash collateral received	(5,208)	(5,923)
Total net receivables	51,946	67,928
Liabilities
Derivative payables	385,211	436,493
Less: Netting agreements to liabilities	(308,431)	(346,545)
Netting of cash collateral paid	(26,101)	(30,032)
Total derivative liabilities	50,679	59,916
Less: Cash collateral paid	(348)	(2,272)
Less: Non-cash collateral paid	(12,504)	(13,475)
Total net payables	37,827	44,169
Trading accounts assets
Liabilities
Does not meet applicable offsetting guidance, assets	4,000	14,000
Trading accounts liabilities
Liabilities
Does not meet applicable offsetting guidance, liabilities	10,000	11,000
Over-the-counter | Trading accounts assets
Assets
Less: Netting agreements to assets	(242,000)	(276,000)
Liabilities
Less: Netting agreements to liabilities		(276,000)
Over-the-counter | Trading accounts liabilities
Liabilities
Less: Netting agreements to liabilities	(242,000)
Cleared | Trading accounts assets
Assets
Less: Netting agreements to assets	(44,000)	(49,000)
Liabilities
Less: Netting agreements to liabilities		(49,000)
Cleared | Trading accounts liabilities
Liabilities
Less: Netting agreements to liabilities	(44,000)
Exchange traded | Trading accounts assets
Assets
Less: Netting agreements to assets	(22,000)	(22,000)
Liabilities
Less: Netting agreements to liabilities		(22,000)
Exchange traded | Trading accounts liabilities
Liabilities
Less: Netting agreements to liabilities	(22,000)
Derivatives instruments designated as ASC 815 hedges
Assets
Derivative receivables	2,247	2,888
Liabilities
Derivative payables	1,858	1,871
Derivatives instruments designated as ASC 815 hedges | Interest rate hedges
Assets
Derivative receivables	557	597
Liabilities
Derivative payables	126	102
Derivatives instruments designated as ASC 815 hedges | Foreign exchange contracts
Assets
Derivative receivables	1,690	2,291
Liabilities
Derivative payables	1,732	1,769
Derivatives instruments designated as ASC 815 hedges | Over-the-counter | Interest rate hedges
Assets
Derivative receivables	458	468
Liabilities
Derivative payables	5	1
Derivatives instruments designated as ASC 815 hedges | Over-the-counter | Foreign exchange contracts
Assets
Derivative receivables	1,690	2,288
Liabilities
Derivative payables	1,732	1,766
Derivatives instruments designated as ASC 815 hedges | Cleared | Interest rate hedges
Assets
Derivative receivables	99	129
Liabilities
Derivative payables	121	101
Derivatives instruments designated as ASC 815 hedges | Cleared | Foreign exchange contracts
Assets
Derivative receivables	0	3
Liabilities
Derivative payables	0	3
Derivatives not designated in a qualifying hedging relationship
Assets
Derivative receivables	385,127	442,099
Liabilities
Derivative payables	383,353	434,622
Derivatives not designated in a qualifying hedging relationship | Interest rate hedges
Assets
Derivative receivables	157,937	177,607
Liabilities
Derivative payables	153,060	172,518
Derivatives not designated in a qualifying hedging relationship | Foreign exchange contracts
Assets
Derivative receivables	158,004	185,372
Liabilities
Derivative payables	155,469	184,226
Derivatives not designated in a qualifying hedging relationship | Equity contracts
Assets
Derivative receivables	43,278	42,407
Liabilities
Derivative payables	47,946	43,783
Derivatives not designated in a qualifying hedging relationship | Commodity and other contract options
Assets
Derivative receivables	17,569	28,324
Liabilities
Derivative payables	18,796	26,318
Derivatives not designated in a qualifying hedging relationship | Credit derivatives
Assets
Derivative receivables	8,339	8,389
Liabilities
Derivative payables	8,082	7,777
Derivatives not designated in a qualifying hedging relationship | Over-the-counter | Interest rate hedges
Assets
Derivative receivables	113,993	126,844
Liabilities
Derivative payables	105,512	119,854
Derivatives not designated in a qualifying hedging relationship | Over-the-counter | Foreign exchange contracts
Assets
Derivative receivables	157,633	184,869
Liabilities
Derivative payables	155,027	183,578
Derivatives not designated in a qualifying hedging relationship | Over-the-counter | Equity contracts
Assets
Derivative receivables	19,515	19,674
Liabilities
Derivative payables	25,425	21,871
Derivatives not designated in a qualifying hedging relationship | Over-the-counter | Commodity and other contract options
Assets
Derivative receivables	16,921	27,285
Liabilities
Derivative payables	18,086	24,912
Derivatives not designated in a qualifying hedging relationship | Over-the-counter | Credit derivatives
Assets
Derivative receivables	6,094	6,836
Liabilities
Derivative payables	6,293	5,807
Derivatives not designated in a qualifying hedging relationship | Cleared | Interest rate hedges
Assets
Derivative receivables	43,858	50,515
Liabilities
Derivative payables	47,462	52,566
Derivatives not designated in a qualifying hedging relationship | Cleared | Foreign exchange contracts
Assets
Derivative receivables	368	502
Liabilities
Derivative payables	420	643
Derivatives not designated in a qualifying hedging relationship | Cleared | Equity contracts
Assets
Derivative receivables	0	1
Liabilities
Derivative payables	0	4
Derivatives not designated in a qualifying hedging relationship | Cleared | Credit derivatives
Assets
Derivative receivables	2,245	1,553
Liabilities
Derivative payables	1,789	1,970
Derivatives not designated in a qualifying hedging relationship | Exchange traded | Interest rate hedges
Assets
Derivative receivables	86	248
Liabilities
Derivative payables	86	98
Derivatives not designated in a qualifying hedging relationship | Exchange traded | Equity contracts
Assets
Derivative receivables	23,763	22,732
Liabilities
Derivative payables	22,521	21,908
Derivatives not designated in a qualifying hedging relationship | Exchange traded | Commodity and other contract options
Assets
Derivative receivables	648	1,039
Liabilities
Derivative payables	710	1,406
Derivatives not designated in a qualifying hedging relationship | Exchange traded | Trading accounts assets | Foreign exchange contracts
Assets
Derivative receivables	3	1
Derivatives not designated in a qualifying hedging relationship | Exchange traded | Trading accounts liabilities | Foreign exchange contracts
Liabilities
Derivative payables	$ 22	$ 5