SECURITIES BORROWED, LOANED AND SUBJECT TO REPURCHASE AGREEMENTS - Repurchase Agreements by Contractual Maturity (Details) - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022
Assets Sold under Agreements to Repurchase
Securities sold under agreements to repurchase	$ 466,340	$ 296,218
Deposits received for securities loaned	29,440	33,269
Total	495,780	329,487
Open and overnight
Assets Sold under Agreements to Repurchase
Securities sold under agreements to repurchase	277,705	138,710
Deposits received for securities loaned	21,543	25,388
Total	299,248	164,098
Up to 30 days
Assets Sold under Agreements to Repurchase
Securities sold under agreements to repurchase	107,162	86,819
Deposits received for securities loaned	304	267
Total	107,466	87,086
31–90 days
Assets Sold under Agreements to Repurchase
Securities sold under agreements to repurchase	25,550	25,119
Deposits received for securities loaned	645	2,121
Total	26,195	27,240
Greater than 90 days
Assets Sold under Agreements to Repurchase
Securities sold under agreements to repurchase	55,923	45,570
Deposits received for securities loaned	6,948	5,493
Total	$ 62,871	$ 51,063