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v3.23.3

Investment Securities (Fair Value of Securities Pledged and Accepted as Collateral) (Details) - USD ($) $ in Millions | Sep. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Summary of Investment Holdings [Line Items] |  |
Permitted by contract or custom to sell or repledge | $ 946 | $ 1,266
Permitted amount repledged to others | 946 | 1,266
Asset Pledged as Collateral |  |
Summary of Investment Holdings [Line Items] |  |
Debt securities, pledged to others | $ 27,462 | $ 24,708

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