BORROWINGS - Schedule of Short-Term Borrowings (Details) - USD ($) $ in Millions	Sep. 30, 2025	Dec. 31, 2024
Debt Disclosure [Abstract]
Securities sold under repurchase agreements	$ 158	$ 165
Federal Home Loan Bank advances	865	585
Federal funds purchased	750	370
Subordinated notes	132	136
Total short-term borrowings	$ 1,905	$ 1,256

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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+ Details