SECURITIES BORROWED, LOANED AND SUBJECT TO REPURCHASE AGREEMENTS - Repurchase Agreements (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Assets Sold under Agreements to Repurchase
Repurchase agreements	$ 296,218	$ 305,597
Securities lending agreements	33,269	33,029
Total	329,487	338,626
U.S. Treasury and federal agency securities
Assets Sold under Agreements to Repurchase
Repurchase agreements	99,979	85,861
Securities lending agreements	106	90
Total	100,085	85,951
State and municipal
Assets Sold under Agreements to Repurchase
Repurchase agreements	1,911	1,053
Securities lending agreements	0	0
Total	1,911	1,053
Foreign government
Assets Sold under Agreements to Repurchase
Repurchase agreements	123,826	133,352
Securities lending agreements	13	212
Total	123,839	133,564
Corporate bonds
Assets Sold under Agreements to Repurchase
Repurchase agreements	14,308	20,398
Securities lending agreements	45	152
Total	14,353	20,550
Equity securities
Assets Sold under Agreements to Repurchase
Repurchase agreements	9,749	25,653
Securities lending agreements	33,096	32,517
Total	42,845	58,170
Mortgage-backed securities
Assets Sold under Agreements to Repurchase
Repurchase agreements	36,225	33,573
Securities lending agreements	0	0
Total	36,225	33,573
Asset-backed securities
Assets Sold under Agreements to Repurchase
Repurchase agreements	1,755	1,681
Securities lending agreements	0	0
Total	1,755	1,681
Other debt securities
Assets Sold under Agreements to Repurchase
Repurchase agreements	8,465	4,026
Securities lending agreements	9	58
Total	8,474	4,084
Open and overnight
Assets Sold under Agreements to Repurchase
Repurchase agreements	138,710	127,679
Securities lending agreements	25,388	23,387
Total	164,098	151,066
Up to 30 days
Assets Sold under Agreements to Repurchase
Repurchase agreements	86,819	93,257
Securities lending agreements	267	6
Total	87,086	93,263
31–90 days
Assets Sold under Agreements to Repurchase
Repurchase agreements	25,119	32,908
Securities lending agreements	2,121	1,392
Total	27,240	34,300
Greater than 90 days
Assets Sold under Agreements to Repurchase
Repurchase agreements	45,570	51,753
Securities lending agreements	5,493	8,244
Total	$ 51,063	$ 59,997