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Short-Term Borrowings - Summary of Short-Term Borrowings (Details) - USD ($) $ in Millions	Jun. 30, 2026	Dec. 31, 2025
Short-Term Debt [Abstract]
FHLB advances	$ 4,000	$ 300
Securities sold under repurchase agreements	397	311
Federal funds purchased	146	226
Derivative collateral	25	19
Other borrowed money	65	70
Short-Term Debt, Total	$ 4,633	$ 926

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Amount of short term borrowing where a bank borrows, at the federal funds rate, from another bank.

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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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