| Current Federal Tax Expense (Benefit) | 1.48B | 2025-01-01 → 2025-12-31 |
| Current State and Local Tax Expense (Benefit) | 527.00M | 2025-01-01 → 2025-12-31 |
| Current Foreign Tax Expense (Benefit) | 90.00M | 2025-01-01 → 2025-12-31 |
| Current Income Tax Expense (Benefit) | 2.10B | 2025-01-01 → 2025-12-31 |
| Deferred Federal Income Tax Expense (Benefit) | -1.45B | 2025-01-01 → 2025-12-31 |
| Deferred State and Local Income Tax Expense (Benefit) | -449.00M | 2025-01-01 → 2025-12-31 |
| Deferred Foreign Income Tax Expense (Benefit) | -8.00M | 2025-01-01 → 2025-12-31 |
| Federal Income Tax Expense (Benefit), Continuing Operations | 33.00M | 2025-01-01 → 2025-12-31 |
| State and Local Income Tax Expense (Benefit), Continuing Operations | 78.00M | 2025-01-01 → 2025-12-31 |
| Professional and Contract Services Expense | 2.42B | 2025-01-01 → 2025-12-31 |
| Share-based Payment Arrangement, Expense | 776.00M | 2025-01-01 → 2025-12-31 |
| Foreign Income Tax Expense (Benefit), Continuing Operations | 82.00M | 2025-01-01 → 2025-12-31 |
| Loans Held-for-sale, Fair Value Disclosure | 755.00M | as of 2025-12-31 |
| Dividends, Preferred Stock, Cash | 252.00M | 2025-01-01 → 2025-12-31 |
| Derivative Asset, Fair Value, Gross Asset Including Not Subject to Master Netting Arrangement | 2.20B | as of 2025-12-31 |
| Derivative Asset, Fair Value, Gross Liability and Obligation to Return Cash, Offset | 408.00M | as of 2025-12-31 |
| Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount | 479.00M | 2025-01-01 → 2025-12-31 |
| Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount | 32.00M | 2025-01-01 → 2025-12-31 |
| Share-based Payment Arrangement, Expense, Tax Benefit | 151.00M | 2025-01-01 → 2025-12-31 |
| Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Amount | 4.00M | 2025-01-01 → 2025-12-31 |
| Derivative Asset, Fair Value of Collateral | 0 | as of 2025-12-31 |
| EffectiveIncomeTaxRateReconciliationCrossBorderTaxEffectAmount | -6.00M | 2025-01-01 → 2025-12-31 |
| Preferred Stock, Including Additional Paid in Capital, Net of Discount | 5.41B | as of 2025-12-31 |
| Effective Income Tax Rate Reconciliation, Tax Credit, Other, Amount | 103.00M | 2025-01-01 → 2025-12-31 |
| Loss Contingency, Estimate of Possible Loss | 300.00M | as of 2025-12-31 |
| Affordable Housing Tax Credits and Other Tax Benefits, Amount | 722.00M | 2025-01-01 → 2025-12-31 |
| Effective Income Tax Rate Reconciliation, Nondeductible Expense, Other, Amount | 26.00M | 2025-01-01 → 2025-12-31 |
| Amortization Method Qualified Affordable Housing Project Investments, Amortization | 696.00M | 2025-01-01 → 2025-12-31 |
| Equity Securities without Readily Determinable Fair Value, Amount | 764.00M | as of 2025-12-31 |
| DepositLiabilityUninsured | 12.90B | as of 2025-12-31 |
| Effective Income Tax Rate Reconciliation, Tax Contingency, Amount | -12.00M | 2025-01-01 → 2025-12-31 |
| Time Deposits, at or Above FDIC Insurance Limit | 17.40B | as of 2025-12-31 |
| Dividends, Common Stock | 1.52B | 2025-01-01 → 2025-12-31 |
| Financing Receivable, Accrued Interest, before Allowance for Credit Loss | 3.10B | as of 2025-12-31 |
| Debt Securities, Available-for-sale, Realized Gain | 0 | 2025-01-01 → 2025-12-31 |
| Debt Securities, Available-for-sale, Realized Loss | 0 | 2025-01-01 → 2025-12-31 |
| Debt Securities, Available-for-sale, Realized Gain (Loss) | 0 | 2025-01-01 → 2025-12-31 |
| Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount | 20.00M | 2025-01-01 → 2025-12-31 |
| Financing Receivable, 90 Days or More Past Due, Still Accruing | 5.35B | as of 2025-12-31 |
| Effective Income Tax Rate Reconciliation, Other Adjustments, Amount | 22.00M | 2025-01-01 → 2025-12-31 |
| Effective Income Tax Rate Reconciliation, Other Reconciling Items, Amount | -41.00M | 2025-01-01 → 2025-12-31 |
| Finite-Lived Intangible Asset, Expected Amortization, Year One | 1.96B | as of 2025-12-31 |
| Finite-Lived Intangible Asset, Expected Amortization, Year Two | 1.78B | as of 2025-12-31 |
| Finite-Lived Intangible Asset, Expected Amortization, Year Three | 1.59B | as of 2025-12-31 |
| Finite-Lived Intangible Asset, Expected Amortization, Year Four | 1.41B | as of 2025-12-31 |
| Finite-Lived Intangible Asset, Expected Amortization, Year Five | 1.23B | as of 2025-12-31 |
| Finite-Lived Intangible Asset, Expected Amortization, after Year Five | 3.62B | as of 2025-12-31 |
| Derivative Asset, Fair Value, Gross Liability | 302.00M | as of 2025-12-31 |
| Treasury Stock, Value, Acquired, Cost Method | 4.10B | 2025-01-01 → 2025-12-31 |
| Derivative Liability, Fair Value, Gross Asset | 302.00M | as of 2025-12-31 |
| Intangible Assets, Gross (Excluding Goodwill) | 18.17B | as of 2025-12-31 |
| Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling within One Year, Amortized Cost | 4.28B | as of 2025-12-31 |
| Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after One Through Five Years, Amortized Cost | 8.03B | as of 2025-12-31 |
| Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after Five Through Ten Years, Amortized Cost | 8.62B | as of 2025-12-31 |
| Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after 10 Years, Amortized Cost | 76.73B | as of 2025-12-31 |
| Derivative, Notional Amount | 385.71B | as of 2025-12-31 |
| Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement | 2.13B | as of 2025-12-31 |
| Derivative Liability, Fair Value, Gross Asset and Right to Reclaim Cash, Offset | 501.00M | as of 2025-12-31 |
| Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling within One Year, Fair Value | 4.27B | as of 2025-12-31 |
| Derivative Liability, Fair Value of Collateral | 0 | as of 2025-12-31 |
| Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after One Through Five Years, Fair Value | 7.99B | as of 2025-12-31 |
| Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after Five Through Ten Years, Fair Value | 8.48B | as of 2025-12-31 |
| Servicing Asset at Amortized Cost, Amortization | 80.00M | 2025-01-01 → 2025-12-31 |
| Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after 10 Years, Fair Value | 70.31B | as of 2025-12-31 |
| Securities Sold under Agreements to Repurchase, Gross | 587.00M | as of 2025-12-31 |
| Securities Sold under Agreements to Repurchase, Asset | 0 | as of 2025-12-31 |
| Securities Sold under Agreements to Repurchase, Collateral, Right to Reclaim Securities | 587.00M | as of 2025-12-31 |
| Intangible Assets, Net (Including Goodwill) | 45.09B | as of 2025-12-31 |
| Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | 6.00M | as of 2025-12-31 |
| Defined Benefit Plan, Benefit Obligation | 501.00M | as of 2025-12-31 |
| Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 7.08B | as of 2025-12-31 |
| Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss | 7.09B | as of 2025-12-31 |
| Securities Sold under Agreements to Repurchase, Amount Offset Against Collateral | 0 | as of 2025-12-31 |
| Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax | 486.00M | as of 2025-12-31 |
| Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax | 7.09B | as of 2025-12-31 |
| Securities Sold under Agreements to Repurchase, Fair Value of Collateral | 599.00M | as of 2025-12-31 |
| Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months | 2.19B | as of 2025-12-31 |
| Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer | 52.25B | as of 2025-12-31 |
| Debt Securities, Available-for-sale, Unrealized Loss Position | 54.43B | as of 2025-12-31 |
| Derivative Asset, Fair Value, Amount Offset Against Collateral | 1.79B | as of 2025-12-31 |
| Stock Issued During Period, Value, New Issues | 1.07B | 2025-01-01 → 2025-12-31 |
| Derivative Liability, Fair Value, Amount Offset Against Collateral | 1.63B | as of 2025-12-31 |
| Goodwill, Acquired During Period | 13.42B | 2025-01-01 → 2025-12-31 |
| Goodwill, Other Increase (Decrease) | 26.00M | 2025-01-01 → 2025-12-31 |
| Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease) | 7.20B | 2025-01-01 → 2025-12-31 |
| Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Employee Compensation | 646.00M | as of 2025-12-31 |
| FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff | 18.17B | 2025-01-01 → 2025-12-31 |
| Goodwill, Gross | 28.51B | as of 2025-12-31 |
| Operating Lease, Cost | 252.00M | 2025-01-01 → 2025-12-31 |
| Variable Lease, Cost | 41.00M | 2025-01-01 → 2025-12-31 |
| Lease, Cost | 280.00M | 2025-01-01 → 2025-12-31 |
| Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Provision for Loan Losses | 5.47B | as of 2025-12-31 |
| Right-of-Use Asset Obtained in Exchange for Operating Lease Liability | 150.00M | 2025-01-01 → 2025-12-31 |
| Deferred Tax Assets, Property, Plant and Equipment | 105.00M | as of 2025-12-31 |
| Deferred Tax Assets, Derivative Instruments | 128.00M | as of 2025-12-31 |
| Lessee, Operating Lease, Liability, to be Paid, Year One | 254.00M | as of 2025-12-31 |
| Lessee, Operating Lease, Liability, to be Paid, Year Two | 233.00M | as of 2025-12-31 |
| Lessee, Operating Lease, Liability, to be Paid, Year Three | 215.00M | as of 2025-12-31 |
| Lessee, Operating Lease, Liability, to be Paid, Year Four | 195.00M | as of 2025-12-31 |
| Lessee, Operating Lease, Liability, to be Paid, Year Five | 166.00M | as of 2025-12-31 |
| Lessee, Operating Lease, Liability, to be Paid, after Year Five | 405.00M | as of 2025-12-31 |
| Lessee, Operating Lease, Liability, to be Paid | 1.47B | as of 2025-12-31 |
| FinancingReceivableExcludingAccruedInterestModifiedPeriod | 6.75B | 2025-01-01 → 2025-12-31 |
| Derivative, Collateral, Right to Reclaim Cash | 1.80B | as of 2025-12-31 |
| Deferred Tax Assets, Other | 839.00M | as of 2025-12-31 |
| Derivative Liability, Collateral, Right to Reclaim Cash, Offset | 199.00M | as of 2025-12-31 |
| Derivative, Collateral, Obligation to Return Cash | 144.00M | as of 2025-12-31 |
| Financing Receivable, Troubled Debt Restructuring, Commitment to Lend | 107.00M | as of 2025-12-31 |
| Deferred Tax Assets, Gross | 11.11B | as of 2025-12-31 |
| Deferred Tax Assets, Valuation Allowance | 320.00M | as of 2025-12-31 |
| Derivative Asset, Collateral, Obligation to Return Cash, Offset | 106.00M | as of 2025-12-31 |
| Deferred Tax Assets, Net of Valuation Allowance | 10.79B | as of 2025-12-31 |
| Lessee, Operating Lease, Liability, Undiscounted Excess Amount | 209.00M | as of 2025-12-31 |
| Deferred Tax Liabilities, Gross | 4.85B | as of 2025-12-31 |
| Deferred Tax Assets, Net | 5.94B | as of 2025-12-31 |
| Financing Receivable, Troubled Debt Restructuring, Subsequent Default | 1.20B | 2025-01-01 → 2025-12-31 |
| Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount | 209.00M | 2025-01-01 → 2025-12-31 |
| Deferred Tax Liabilities, Mortgage Servicing Rights | 69.00M | as of 2025-12-31 |
| Debt and Equity Securities, Gain (Loss) | 0 | 2025-01-01 → 2025-12-31 |
| OCI, before Reclassifications, Net of Tax, Attributable to Parent | 3.01B | 2025-01-01 → 2025-12-31 |
| Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent | -811.00M | 2025-01-01 → 2025-12-31 |
| Hedged Asset, Discontinued Fair Value Hedge, Cumulative Increase (Decrease) | 3.70B | as of 2025-12-31 |
| Deferred Tax Liabilities, Other | 43.00M | as of 2025-12-31 |
| Hedged Asset, Fair Value Hedge, Cumulative Increase (Decrease) | 29.00M | as of 2025-12-31 |
| Prepayable Financial Asset Closed Portfolio, Last-of-Layer, Amortized Cost | 2.50B | as of 2025-12-31 |
| Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months | -349.00M | 2025-01-01 → 2025-12-31 |
| Defined Benefit Plan, Cost of Providing Special and Contractual Termination Benefits | 37.00M | 2025-01-01 → 2025-12-31 |
| Defined Contribution Plan, Cost | 580.00M | 2025-01-01 → 2025-12-31 |
| Security Owned and Pledged as Collateral, Associated Liabilities, Fair Value | 39.70B | as of 2025-12-31 |
| Debt Securities, Available-for-sale, Change in Present Value, Interest Income | 327.00M | as of 2025-12-31 |
| Financing Receivable, Held-for-Sale, Not Part of Disposal Group, after Valuation Allowance | 760.00M | as of 2025-12-31 |
| Income (Loss) from Continuing Operations before Income Taxes, Domestic | 1.92B | 2025-01-01 → 2025-12-31 |
| Income (Loss) from Continuing Operations before Income Taxes, Foreign | 363.00M | 2025-01-01 → 2025-12-31 |
| FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYearWriteoff | 249.00M | 2025-01-01 → 2025-12-31 |
| FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYearWriteoff | 816.00M | 2025-01-01 → 2025-12-31 |
| FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearWriteoff | 710.00M | 2025-01-01 → 2025-12-31 |
| FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYearWriteoff | 734.00M | 2025-01-01 → 2025-12-31 |
| FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYearWriteoff | 375.00M | 2025-01-01 → 2025-12-31 |
| FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearWriteoff | 232.00M | 2025-01-01 → 2025-12-31 |
| FinancingReceivableExcludingAccruedInterestRevolvingWriteoff | 14.75B | 2025-01-01 → 2025-12-31 |
| FinancingReceivableExcludingAccruedInterestRevolvingConvertedToTermLoanWriteoff | 298.00M | 2025-01-01 → 2025-12-31 |
| Banking Regulation, Tier One Risk-Based Capital, Actual | 78.45B | as of 2025-12-31 |
| Banking Regulation, Common Equity Tier One Risk-Based Capital, Actual | 73.05B | as of 2025-12-31 |
| Banking Regulation, Tier One Leverage Capital, Actual | 78.45B | as of 2025-12-31 |
| Banking Regulation, Total Capital, Actual | 88.00B | as of 2025-12-31 |
| Financing Receivable, Nonaccrual | 1.82B | as of 2025-12-31 |
| Financing Receivable, Nonaccrual, Interest Income | 96.00M | 2025-01-01 → 2025-12-31 |
| Financing Receivable, Nonaccrual, No Allowance | 722.00M | as of 2025-12-31 |
| APIC, Share-based Payment Arrangement, Increase for Cost Recognition | 743.00M | 2025-01-01 → 2025-12-31 |
| Unamortized Loan Commitment and Origination Fees and Unamortized Discounts or Premiums | 980.00M | as of 2025-12-31 |