VARIABLE INTEREST ENTITIES - Schedule of Tax Credit Investments Recognized in Income Tax Expense (Details) - Variable Interest Entity, Not Primary Beneficiary - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
|
| Variable Interest Entity [Line Items] | ||||
| Amortization of affordable housing tax credit investments | $ 69 | $ 63 | $ 219 | $ 197 |
| Investment Program, Proportional Amortization Method, Applied, Amortization Expense, Statement of Cash Flows [Extensible Enumeration] | Depreciation, amortization, and accretion, net | Depreciation, amortization, and accretion, net | Depreciation, amortization, and accretion, net | Depreciation, amortization, and accretion, net |
| Investment Program Proportional Amortization Method Applied Income Tax Credit And Other Tax Benefit Amortization Statement Of Income Or Comprehensive Income Extensible Enumeration Not Disclosed Flag | Amortization of affordable housing tax credit investments (1) | Amortization of affordable housing tax credit investments (1) | Amortization of affordable housing tax credit investments (1) | Amortization of affordable housing tax credit investments (1) |
| Tax credits from affordable housing tax credit investments | $ (73) | $ (66) | $ (230) | $ (201) |
| Other tax benefits from affordable housing tax credit investments | $ (10) | $ (15) | $ (42) | $ (38) |
| Investment Program Proportional Amortization Method Elected Income Tax Credit And Other Income Tax Benefit Before Amortization Statement Of Cash Flows Extensible Enumeration Not Disclosed Flag | Other tax benefits from affordable housing tax credit investments | Other tax benefits from affordable housing tax credit investments | Other tax benefits from affordable housing tax credit investments | Other tax benefits from affordable housing tax credit investments |
| InvestmentProgramProportionalAmortizationMethodElectedIncomeTaxCreditAndOtherIncomeTaxBenefitBeforeAmortizationStatementOfIncomeOrComprehensiveIncomeExtensibleEnumerationNotDisclosedFlag | Other tax benefits from affordable housing tax credit investments | Other tax benefits from affordable housing tax credit investments | Other tax benefits from affordable housing tax credit investments | Other tax benefits from affordable housing tax credit investments |
| Net income tax benefit from affordable housing tax credit investments | $ (14) | $ (18) | $ (53) | $ (42) |