SECURITIES FINANCING ACTIVITIES - Schedule of Securities Loaned or Sold Under Agreements to Repurchase (Details) - USD ($) $ in Millions	Sep. 30, 2026	Dec. 31, 2025
Banking and Thrift, Other Disclosure [Abstract]
Securities sold under agreements to repurchase	$ 22,779	$ 19,459
Securities lending	11	1
Total	$ 22,790	$ 19,460

Amount, after the effects of master netting arrangements, of securities loaned to entities in exchange for collateral. Includes liabilities not subject to a master netting arrangement and not elected to be offset.

Amount, after the effects of master netting arrangements, of funds outstanding borrowed in the form of a security repurchase agreement between the entity and another party for the sale and repurchase of identical or substantially the same securities at a date certain for a specified price. Includes liabilities not subject to a master netting arrangement and not elected to be offset.

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