Investment Securities - Schedule of Fair Value of Other Securities (Details) - USD ($) $ in Millions	Sep. 30, 2026	Dec. 31, 2025
Debt and Equity Securities, FV-NI [Line Items]
Bonds	$ 3	$ 6
Total	60	58
Preferred stock
Debt and Equity Securities, FV-NI [Line Items]
Equity securities	11	12
Common stock
Debt and Equity Securities, FV-NI [Line Items]
Equity securities	$ 46	$ 40

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

- Definition

Amount of investment in debt security measured at fair value with change in fair value recognized in net income (trading).

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+ Details