DERIVATIVES - Derivative Mark-to-Market (MTM) Receivables/Payables (Details) - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021
Assets
Derivative receivables	$ 462,703	$ 386,851
Less: Netting agreements to assets	(348,255)	(292,628)
Less: Netting of cash collateral received	(32,563)	(24,447)
Total trading account derivatives, assets	81,885	69,776
Less: Cash collateral received	(2,244)	(907)
Less: Non-cash collateral received	(4,878)	(5,777)
Total net receivables	74,763	63,092
Liabilities
Derivative payables	444,962	377,450
Less: Netting agreements to liabilities	(348,255)	(292,628)
Less: Netting of cash collateral paid	(33,950)	(29,306)
Total derivative liabilities	62,757	55,516
Less: Cash collateral paid	(1,918)	(538)
Less: Non-cash collateral paid	(12,975)	(13,607)
Total net payables	47,864	41,371
Trading account assets
Liabilities
Does not meet applicable offsetting guidance, assets	7,000	10,000
Trading account assets | Over-the-counter
Liabilities
Less: Netting agreements to liabilities	(286,000)	(259,000)
Trading account assets | Cleared
Liabilities
Less: Netting agreements to liabilities	(31,000)	(14,000)
Trading account assets | Exchange traded
Liabilities
Less: Netting agreements to liabilities	(31,000)	(20,000)
Trading accounts liabilities
Liabilities
Does not meet applicable offsetting guidance, liabilities	11,000	11,000
Trading accounts liabilities | Over-the-counter
Assets
Less: Netting agreements to assets	(286,000)	(259,000)
Trading accounts liabilities | Cleared
Assets
Less: Netting agreements to assets	(31,000)	(14,000)
Trading accounts liabilities | Exchange traded
Assets
Less: Netting agreements to assets	(31,000)	(20,000)
Derivative instruments designated as ASC 815 hedges
Assets
Derivative receivables	2,527	2,633
Liabilities
Derivative payables	2,575	1,567
Derivative instruments designated as ASC 815 hedges | Interest rate contracts
Assets
Derivative receivables	797	1,289
Liabilities
Derivative payables	428	95
Derivative instruments designated as ASC 815 hedges | Interest rate contracts | Over-the-counter
Assets
Derivative receivables	671	1,167
Liabilities
Derivative payables	2	6
Derivative instruments designated as ASC 815 hedges | Interest rate contracts | Cleared
Assets
Derivative receivables	126	122
Liabilities
Derivative payables	426	89
Derivative instruments designated as ASC 815 hedges | Foreign exchange contracts
Assets
Derivative receivables	1,730	1,344
Liabilities
Derivative payables	2,147	1,472
Derivative instruments designated as ASC 815 hedges | Foreign exchange contracts | Over-the-counter
Assets
Derivative receivables	1,729	1,338
Liabilities
Derivative payables	2,147	1,472
Derivative instruments designated as ASC 815 hedges | Foreign exchange contracts | Cleared
Assets
Derivative receivables	1	6
Liabilities
Derivative payables	0	0
Derivatives instruments not designated as ASC 815 hedges
Assets
Derivative receivables	460,176	384,218
Liabilities
Derivative payables	442,387	375,883
Derivatives instruments not designated as ASC 815 hedges | Interest rate contracts
Assets
Derivative receivables	158,728	164,199
Liabilities
Derivative payables	149,709	149,979
Derivatives instruments not designated as ASC 815 hedges | Interest rate contracts | Over-the-counter
Assets
Derivative receivables	123,716	152,524
Liabilities
Derivative payables	115,511	138,114
Derivatives instruments not designated as ASC 815 hedges | Interest rate contracts | Cleared
Assets
Derivative receivables	34,690	11,579
Liabilities
Derivative payables	33,926	11,821
Derivatives instruments not designated as ASC 815 hedges | Interest rate contracts | Exchange traded
Assets
Derivative receivables	322	96
Liabilities
Derivative payables	272	44
Derivatives instruments not designated as ASC 815 hedges | Foreign exchange contracts
Assets
Derivative receivables	184,380	134,205
Liabilities
Derivative payables	179,245	133,826
Derivatives instruments not designated as ASC 815 hedges | Foreign exchange contracts | Over-the-counter
Assets
Derivative receivables	183,935	133,357
Liabilities
Derivative payables	178,416	133,548
Derivatives instruments not designated as ASC 815 hedges | Foreign exchange contracts | Cleared
Assets
Derivative receivables	445	848
Liabilities
Derivative payables	829	278
Derivatives instruments not designated as ASC 815 hedges | Equity contracts
Assets
Derivative receivables	55,591	45,252
Liabilities
Derivative payables	58,509	49,684
Derivatives instruments not designated as ASC 815 hedges | Equity contracts | Over-the-counter
Assets
Derivative receivables	25,577	23,452
Liabilities
Derivative payables	27,170	28,352
Derivatives instruments not designated as ASC 815 hedges | Equity contracts | Cleared
Assets
Derivative receivables	22	19
Liabilities
Derivative payables	12	0
Derivatives instruments not designated as ASC 815 hedges | Equity contracts | Exchange traded
Assets
Derivative receivables	29,992	21,781
Liabilities
Derivative payables	31,327	21,332
Derivatives instruments not designated as ASC 815 hedges | Commodity and other contracts
Assets
Derivative receivables	49,676	30,344
Liabilities
Derivative payables	44,629	31,379
Derivatives instruments not designated as ASC 815 hedges | Commodity and other contracts | Over-the-counter
Assets
Derivative receivables	47,253	29,279
Liabilities
Derivative payables	41,326	29,833
Derivatives instruments not designated as ASC 815 hedges | Commodity and other contracts | Exchange traded
Assets
Derivative receivables	2,423	1,065
Liabilities
Derivative payables	3,303	1,546
Derivatives instruments not designated as ASC 815 hedges | Credit derivatives
Assets
Derivative receivables	11,801	10,218
Liabilities
Derivative payables	10,295	11,015
Derivatives instruments not designated as ASC 815 hedges | Credit derivatives | Over-the-counter
Assets
Derivative receivables	9,837	6,896
Liabilities
Derivative payables	8,401	6,959
Derivatives instruments not designated as ASC 815 hedges | Credit derivatives | Cleared
Assets
Derivative receivables	1,964	3,322
Liabilities
Derivative payables	$ 1,894	$ 4,056