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VARIABLE INTEREST ENTITIES - Low Income Housing Tax Credit Partnerships (Details) - Variable Interest Entity - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Dec. 31, 2024
Affordable housing tax credit partnerships |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |
Affordable housing tax credit investments | $ 3,880 |  | $ 3,880 |  | $ 3,628
Less: amortization | (1,411) |  | (1,411) |  | (1,246)
Net affordable housing tax credit investments | 2,469 |  | 2,469 |  | 2,382
Unfunded commitments | 1,017 |  | 1,017 |  | $ 1,065
Tax credits and other tax benefits recognized | 86 | $ 78 | 259 | $ 230 |
Proportional Amortization Method |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |
Proportional amortization expense included in provision for income taxes | $ 68 | $ 63 | $ 209 | $ 189 |

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- Definition Amount, before amortization expense, of income tax credit and other tax benefit generated by investment under tax credit program elected to be accounted for using proportional amortization method. Includes, but is not limited to, investment under tax credit program not meeting condition for accounting under proportional amortization method. + References Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 323 -SubTopic 740 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478156/323-740-50-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 323 -Name Accounting Standards Codification -Section 50 -Paragraph 1A -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478156/740-323-50-1A + Details
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