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v3.25.1

Debt Securities (Narrative) (Details) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2025 USD ($) security | Mar. 31, 2024 USD ($) | Dec. 31, 2024 USD ($) security
Debt Securities, Available-for-sale [Line Items] |  |  |
Debt Securities Transferred from Available for Sale to Held to Maturity, Amortized Cost | $ 1,000 |  |
OCIDebtSecuritiesAvailableForSaleTransferToHeldToMaturityUnrealizedGainLossBeforeAdjustmentBeforeTax | 153 |  |
Debt securities available for sale | $ 25,942 |  | $ 26,224
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | security | 1,570 |  | 1,722
Debt Securities, Available-for-Sale, Realized Loss | $ 26 | $ 50 |
Debt Securities, Available-for-sale, Realized Gain | 1 | $ 0 |
Gross Realized Gain (Loss), net | 25 |  |
Asset Pledged as Collateral |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Debt securities available for sale | $ 21,000 |  | $ 20,900

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