Securities - Equity Securities That Are Not Classified as Trading (Details) - USD ($) $ in Millions	Jun. 30, 2026	Dec. 31, 2025
Investments, Debt and Equity Securities [Abstract]
Equity securities carried at fair value	$ 256	$ 243
Equity securities without readily determinable fair values	$ 19	$ 17

Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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