SECURITIES BORROWED, LOANED AND SUBJECT TO REPURCHASE AGREEMENTS - Repurchase Agreements by Class of Collateral (Details) - USD ($) $ in Millions	Sep. 30, 2022	Dec. 31, 2021
Assets Sold under Agreements to Repurchase
Repurchase agreements	$ 286,259	$ 305,597
Securities lending agreements	26,014	33,029
Total	312,273	338,626
U.S. Treasury and federal agency securities
Assets Sold under Agreements to Repurchase
Repurchase agreements	105,681	85,861
Securities lending agreements	119	90
Total	105,800	85,951
State and municipal securities
Assets Sold under Agreements to Repurchase
Repurchase agreements	1,141	1,053
Securities lending agreements	0	0
Total	1,141	1,053
Foreign government securities
Assets Sold under Agreements to Repurchase
Repurchase agreements	120,050	133,352
Securities lending agreements	110	212
Total	120,160	133,564
Corporate bonds
Assets Sold under Agreements to Repurchase
Repurchase agreements	15,176	20,398
Securities lending agreements	67	152
Total	15,243	20,550
Equity securities
Assets Sold under Agreements to Repurchase
Repurchase agreements	10,263	25,653
Securities lending agreements	25,541	32,517
Total	35,804	58,170
Mortgage-backed securities
Assets Sold under Agreements to Repurchase
Repurchase agreements	24,007	33,573
Securities lending agreements	0	0
Total	24,007	33,573
Asset-backed securities
Assets Sold under Agreements to Repurchase
Repurchase agreements	1,749	1,681
Securities lending agreements	0	0
Total	1,749	1,681
Other
Assets Sold under Agreements to Repurchase
Repurchase agreements	8,192	4,026
Securities lending agreements	177	58
Total	$ 8,369	$ 4,084