SECURITIES BORROWED, LOANED AND SUBJECT TO REPURCHASE AGREEMENTS - Repurchase Agreements (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Assets Sold under Agreements to Repurchase
Repurchase agreements	$ 563,539	$ 513,172
Securities lending agreements	34,315	32,622
Total	597,854	545,794
U.S. Treasury and federal agency securities
Assets Sold under Agreements to Repurchase
Repurchase agreements	324,233	223,343
Securities lending agreements	40	461
Total	324,273	223,804
State and municipal
Assets Sold under Agreements to Repurchase
Repurchase agreements	183	447
Securities lending agreements	0	2
Total	183	449
Foreign government
Assets Sold under Agreements to Repurchase
Repurchase agreements	132,123	174,661
Securities lending agreements	1,069	118
Total	133,192	174,779
Corporate bonds
Assets Sold under Agreements to Repurchase
Repurchase agreements	17,467	12,403
Securities lending agreements	330	195
Total	17,797	12,598
Marketable equity securities
Assets Sold under Agreements to Repurchase
Repurchase agreements	18,498	5,853
Securities lending agreements	32,837	31,574
Total	51,335	37,427
Mortgage-backed securities
Assets Sold under Agreements to Repurchase
Repurchase agreements	65,279	85,014
Securities lending agreements	0	21
Total	65,279	85,035
Asset-backed securities
Assets Sold under Agreements to Repurchase
Repurchase agreements	2,609	3,032
Securities lending agreements	23	178
Total	2,632	3,210
Other debt securities
Assets Sold under Agreements to Repurchase
Repurchase agreements	3,147	8,419
Securities lending agreements	16	73
Total	3,163	8,492
Open and overnight
Assets Sold under Agreements to Repurchase
Repurchase agreements	299,527	289,907
Securities lending agreements	25,898	24,997
Total	325,425	314,904
Up to 30 days
Assets Sold under Agreements to Repurchase
Repurchase agreements	154,036	134,870
Securities lending agreements	213	0
Total	154,249	134,870
31–90 days
Assets Sold under Agreements to Repurchase
Repurchase agreements	46,635	35,639
Securities lending agreements	1,007	1,270
Total	47,642	36,909
Greater than 90 days
Assets Sold under Agreements to Repurchase
Repurchase agreements	63,341	52,756
Securities lending agreements	7,197	6,355
Total	$ 70,538	$ 59,111