SECURITIES BORROWED, LOANED AND SUBJECT TO REPURCHASE AGREEMENTS - Offsetting (Details) - USD ($) $ in Millions	Sep. 30, 2022	Dec. 31, 2021
Securities purchased under agreements to resell
Gross amounts of recognized assets	$ 368,675	$ 367,594
Gross amounts offset on the Consolidated Balance Sheet	100,204	131,342
Net amounts of assets included on the Consolidated Balance Sheet	268,471	236,252
Amounts not offset on the Consolidated Balance Sheet but eligible for offsetting upon counterparty default	188,620	205,349
Net amounts	79,851	30,903
Deposits paid for securities borrowed
Gross amounts of recognized assets	89,452	107,041
Gross amounts offset on the Consolidated Balance Sheet	8,640	15,999
Net amounts of assets included on the Consolidated Balance Sheet	80,812	91,042
Amounts not offset on the Consolidated Balance Sheet but eligible for offsetting upon counterparty default	12,272	17,326
Net amounts	68,540	73,716
Total
Gross amounts of recognized assets	458,127	474,635
Gross amounts offset on the Consolidated Balance Sheet	108,844	147,341
Net amounts of assets included on the Consolidated Balance Sheet	349,283	327,294
Amounts not offset on the Consolidated Balance Sheet but eligible for offsetting upon counterparty default	200,892	222,675
Net amounts	148,391	104,619
Securities sold under agreements to repurchase
Gross amounts of recognized liabilities	286,259	305,597
Gross amounts offset on the Consolidated Balance Sheet	100,204	131,342
Net amounts of liabilities included on the Consolidated Balance Sheet	186,055	174,255
Amounts not offset on the Consolidated Balance Sheet but eligible for offsetting upon counterparty default	74,279	85,184
Net amounts	111,776	89,071
Deposits received for securities loaned
Gross amounts of recognized liabilities	26,014	33,029
Gross amounts offset on the Consolidated Balance Sheet	8,640	15,999
Net amounts of liabilities included on the Consolidated Balance Sheet	17,374	17,030
Amounts not offset on the Consolidated Balance Sheet but eligible for offsetting upon counterparty default	1,302	2,868
Net amounts	16,072	14,162
Total
Gross amounts of recognized liabilities	312,273	338,626
Gross amounts offset on the Consolidated Balance Sheet	108,844	147,341
Net amounts of liabilities included on the Consolidated Balance Sheet	203,429	191,285
Amounts not offset on the Consolidated Balance Sheet but eligible for offsetting upon counterparty default	75,581	88,052
Net amounts	$ 127,848	$ 103,233