Derivatives and Hedging Activities - Schedule of Derivative Instrument Cash Flow Hedge Earning Recognized by Income Statement Location (Details) - USD ($) $ in Millions |
3 Months Ended | |
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Mar. 31, 2026 |
Mar. 31, 2025 |
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| Derivatives, Fair Value [Line Items] | ||
| Net Gains (Losses) Recognized in OCI | $ 451 | $ 240 |
| Net Gains (Losses) Reclassified From AOCI Into Income | (37) | (94) |
| Interest income – loans | Interest rate | Cash Flow Hedging | ||
| Derivatives, Fair Value [Line Items] | ||
| Net Gains (Losses) Recognized in OCI | 449 | 241 |
| Net Gains (Losses) Reclassified From AOCI Into Income | (36) | (93) |
| Interest expense — Long-term debt | Interest rate | Cash Flow Hedging | ||
| Derivatives, Fair Value [Line Items] | ||
| Net Gains (Losses) Recognized in OCI | 2 | (1) |
| Net Gains (Losses) Reclassified From AOCI Into Income | $ (1) | $ (1) |
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- Definition 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. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount, before tax and reclassification, of gain (loss) from derivative instrument designated and qualifying cash flow hedge included in assessment of hedge effectiveness. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount, after tax, of reclassification of gain (loss) from accumulated other comprehensive income (AOCI) for derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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