Deposits and Borrowings - Deposits and Short-term Borrowings (Details) - USD ($) $ in Millions	Mar. 31, 2025	Dec. 31, 2024	Mar. 31, 2024
Deposits:
Non-interest-bearing deposits	$ 26,500	$ 26,122
Interest-bearing deposits	340,964	336,585
Total deposits	367,464	362,707	$ 350,969
Short-term borrowings:
Total short-term borrowings	573	562
Federal funds purchased and securities loaned or sold under agreements to repurchase
Short-term borrowings:
Total short-term borrowings	$ 573	$ 562

The aggregate of all deposit liabilities held by the entity, including foreign and domestic, interest and noninterest bearing; may include demand deposits, saving deposits, Negotiable Order of Withdrawal (NOW) and time deposits among others.

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The aggregate of all domestic and foreign interest-bearing deposit liabilities.

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The aggregate amount of all domestic and foreign noninterest-bearing deposits liabilities held by the entity.

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Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

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