| CashHeldInForeignCurrency | 1.80B | as of 2025-12-31 |
| Current Federal Tax Expense (Benefit) | 184.60M | 2025-01-01 → 2025-12-31 |
| Current State and Local Tax Expense (Benefit) | 23.70M | 2025-01-01 → 2025-12-31 |
| Current Foreign Tax Expense (Benefit) | 199.80M | 2025-01-01 → 2025-12-31 |
| Current Income Tax Expense (Benefit) | 408.10M | 2025-01-01 → 2025-12-31 |
| Deferred Federal Income Tax Expense (Benefit) | 159.90M | 2025-01-01 → 2025-12-31 |
| Deferred State and Local Income Tax Expense (Benefit) | 34.00M | 2025-01-01 → 2025-12-31 |
| Deferred Foreign Income Tax Expense (Benefit) | 600.00K | 2025-01-01 → 2025-12-31 |
| Resell Agreements, Period End Amounts Excluding Effects of Agreements Reported Net by Counterparty | 0 | as of 2025-12-31 |
| Federal Income Tax Expense (Benefit), Continuing Operations | 344.50M | 2025-01-01 → 2025-12-31 |
| State and Local Income Tax Expense (Benefit), Continuing Operations | 57.70M | 2025-01-01 → 2025-12-31 |
| Share-based Payment Arrangement, Expense | 126.50M | 2025-01-01 → 2025-12-31 |
| Foreign Income Tax Expense (Benefit), Continuing Operations | 200.40M | 2025-01-01 → 2025-12-31 |
| DerivativeAssetFairValueAfterOffsetAndDeductionSubjectToMasterNettingArrangement | 9.40M | as of 2025-12-31 |
| Derivative Asset, Not Subject to Master Netting Arrangement | 303.00M | as of 2025-12-31 |
| Dividends, Preferred Stock | 41.80M | 2025-01-01 → 2025-12-31 |
| Deferred Compensation Arrangement with Individual, Cash Award Granted, Amount | 402.90M | as of 2025-12-31 |
| Derivative Asset, Fair Value, Gross Asset Including Not Subject to Master Netting Arrangement | 2.09B | as of 2025-12-31 |
| Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount | 491.30M | 2025-01-01 → 2025-12-31 |
| Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount | 38.80M | 2025-01-01 → 2025-12-31 |
| Share-based Payment Arrangement, Expense, Tax Benefit | 31.00M | 2025-01-01 → 2025-12-31 |
| Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Amount | 21.10M | 2025-01-01 → 2025-12-31 |
| EffectiveIncomeTaxRateReconciliationCrossBorderTaxEffectAmount | 13.60M | 2025-01-01 → 2025-12-31 |
| Securities Purchased under Agreements to Resell, Gross | 92.67B | as of 2025-12-31 |
| Repurchase Agreement Counterparty, Amount at Risk | 0 | as of 2025-12-31 |
| Securities Purchased under Agreements to Resell, Liability | 90.02B | as of 2025-12-31 |
| Effective Income Tax Rate Reconciliation, Tax Credit, Investment, Amount | 15.50M | 2025-01-01 → 2025-12-31 |
| Securities Purchased under Agreements to Resell, Collateral, Obligation to Return Securities | 2.65B | as of 2025-12-31 |
| Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount | 89.80M | as of 2025-12-31 |
| Effective Income Tax Rate Reconciliation, Tax Credit, Other, Amount | 7.20M | 2025-01-01 → 2025-12-31 |
| Fair Value of Securities Received as Collateral that Have Been Resold or Repledged | 89.70B | as of 2025-12-31 |
| SecurityPurchasedUnderAgreementToResellAfterOffsetAndDeductionSubjectToMasterNettingArrangement | 0 | as of 2025-12-31 |
| Secured Debt, Repurchase Agreements | 90.31B | as of 2025-12-31 |
| Other Labor-related Expenses | 36.10M | 2025-01-01 → 2025-12-31 |
| Affordable Housing Tax Credits and Other Tax Benefits, Amount | 114.00M | 2025-01-01 → 2025-12-31 |
| Effective Income Tax Rate Reconciliation, Nondeductible Expense, Amount | 1.00M | 2025-01-01 → 2025-12-31 |
| Amortization Method Qualified Affordable Housing Project Investments, Amortization | 98.50M | 2025-01-01 → 2025-12-31 |
| Effective Income Tax Rate Reconciliation, Tax Contingency, Amount | -1.10M | 2025-01-01 → 2025-12-31 |
| SegmentReportingOtherItemAmount | 1.73B | 2025-01-01 → 2025-12-31 |
| Dividends, Common Stock | 600.50M | 2025-01-01 → 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 | 59.80M | 2025-01-01 → 2025-12-31 |
| Effective Income Tax Rate Reconciliation, Other Adjustments, Amount | 800.00K | 2025-01-01 → 2025-12-31 |
| Loss Contingency Accrual | 0 | as of 2025-12-31 |
| Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, Year One | 7.89B | as of 2025-12-31 |
| Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year One Through Five | 21.18B | as of 2025-12-31 |
| Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10 | 3.58B | as of 2025-12-31 |
| Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 10 | 1.45B | as of 2025-12-31 |
| Derivative Asset, Fair Value, Gross Liability | 1.78B | as of 2025-12-31 |
| Derivative Asset, Fair Value, Amount Not Offset Against Collateral | 12.10M | as of 2025-12-31 |
| Treasury Stock, Value, Acquired, Cost Method | 1.27B | 2025-01-01 → 2025-12-31 |
| Derivative Liability, Fair Value, Gross Asset | 1.18B | as of 2025-12-31 |
| Net Income (Loss) Available to Common Stockholders, Diluted | 1.68B | 2025-01-01 → 2025-12-31 |
| Derivative Liability, Fair Value, Amount Not Offset Against Collateral | 195.40M | as of 2025-12-31 |
| DerivativeLiabilityFairValueAfterOffsetAndDeductionSubjectToMasterNettingArrangement | 195.40M | as of 2025-12-31 |
| Derivative Liability, Not Subject to Master Netting Arrangement | 1.04B | as of 2025-12-31 |
| Derivative, Notional Amount | 421.56B | as of 2025-12-31 |
| Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, Year One | 7.88B | as of 2025-12-31 |
| Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year One Through Five | 21.17B | as of 2025-12-31 |
| Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10 | 3.56B | as of 2025-12-31 |
| Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement | 2.41B | as of 2025-12-31 |
| Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 10 | 1.43B | as of 2025-12-31 |
| Securities Sold under Agreements to Repurchase, Gross | 90.31B | as of 2025-12-31 |
| ShareRepurchaseProgramExciseTax | 10.90M | 2025-01-01 → 2025-12-31 |
| Securities Sold under Agreements to Repurchase, Asset | 90.02B | as of 2025-12-31 |
| Securities Sold under Agreements to Repurchase, Collateral, Right to Reclaim Securities | 292.20M | as of 2025-12-31 |
| Fair Value Disclosure, Off-balance Sheet Risks, Amount, Liability | 349.43B | as of 2025-12-31 |
| Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | 5.60M | as of 2025-12-31 |
| Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 153.10M | as of 2025-12-31 |
| Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss | 158.70M | as of 2025-12-31 |
| Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss) | -20.60M | 2025-01-01 → 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 | 92.80M | as of 2025-12-31 |
| Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax | 158.70M | as of 2025-12-31 |
| Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months | 2.89B | as of 2025-12-31 |
| Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer | 8.78B | as of 2025-12-31 |
| Debt Securities, Available-for-sale, Unrealized Loss Position | 11.67B | as of 2025-12-31 |
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value | 7.40M | as of 2025-12-31 |
| Derivative Asset, Fair Value, Amount Offset Against Collateral | 312.40M | as of 2025-12-31 |
| Derivative Liability, Fair Value, Amount Offset Against Collateral | 1.23B | as of 2025-12-31 |
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value | 4.20M | 2025-01-01 → 2025-12-31 |
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value | 7.40M | as of 2025-12-31 |
| Goodwill, Foreign Currency Translation Gain (Loss) | 18.00M | 2025-01-01 → 2025-12-31 |
| Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss | 1.07B | as of 2025-12-31 |
| Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain | 17.40M | as of 2025-12-31 |
| FinancingReceivableExcludingAccruedInterestCreditLossExpenseReversal | -3.40M | 2025-01-01 → 2025-12-31 |
| FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff | 3.90M | 2025-01-01 → 2025-12-31 |
| FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossRecovery | 3.60M | 2025-01-01 → 2025-12-31 |
| Operating Lease, Cost | 87.80M | 2025-01-01 → 2025-12-31 |
| FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoffAfterRecovery | 300.00K | 2025-01-01 → 2025-12-31 |
| Variable Lease, Cost | 50.40M | 2025-01-01 → 2025-12-31 |
| Lease, Cost | 135.00M | 2025-01-01 → 2025-12-31 |
| Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Provision for Loan Losses | 41.50M | as of 2025-12-31 |
| Right-of-Use Asset Obtained in Exchange for Operating Lease Liability | 48.80M | 2025-01-01 → 2025-12-31 |
| DebtSecuritiesHeldToMaturityAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLossMaturityAllocatedAndSingleMaturityDateYearOne | 7.60B | as of 2025-12-31 |
| DebtSecuritiesHeldToMaturityAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLossMaturityAllocatedAndSingleMaturityDateAfterYearOneThroughFive | 11.38B | as of 2025-12-31 |
| DebtSecuritiesHeldToMaturityAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLossMaturityAllocatedAndSingleMaturityDateAfterYear5Through10 | 2.85B | as of 2025-12-31 |
| DebtSecuritiesHeldToMaturityAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLossMaturityAllocatedAndSingleMaturityDateAfterYear10 | 1.60B | as of 2025-12-31 |
| Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment | 10.20M | as of 2025-12-31 |
| Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment | 154.10M | as of 2025-12-31 |
| Financing Receivable, Collectively Evaluated for Impairment | 41.85B | as of 2025-12-31 |
| Debt Securities, Held-to-Maturity, Fair Value, Maturity, Allocated and Single Maturity Date, Year One | 7.48B | as of 2025-12-31 |
| Financing Receivable, Individually Evaluated for Impairment | 100.90M | as of 2025-12-31 |
| Debt Securities, Held-to-Maturity, Fair Value, Maturity, Allocated and Single Maturity Date, after Year One Through Five | 10.97B | as of 2025-12-31 |
| Debt Securities, Held-to-Maturity, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10 | 2.64B | as of 2025-12-31 |
| Debt Securities, Held-to-Maturity, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 10 | 1.30B | as of 2025-12-31 |
| Deferred Tax Assets, Property, Plant and Equipment | 39.70M | as of 2025-12-31 |
| Deferred Tax Assets, Unrealized Losses on Available-for-Sale Securities, Gross | 73.70M | as of 2025-12-31 |
| Lessee, Operating Lease, Liability, to be Paid, Year One | 98.00M | as of 2025-12-31 |
| Lessee, Operating Lease, Liability, to be Paid, Year Two | 99.10M | as of 2025-12-31 |
| Lessee, Operating Lease, Liability, to be Paid, Year Three | 86.20M | as of 2025-12-31 |
| Lessee, Operating Lease, Liability, to be Paid, Year Four | 71.00M | as of 2025-12-31 |
| Lessee, Operating Lease, Liability, to be Paid, Year Five | 70.30M | as of 2025-12-31 |
| Lessee, Operating Lease, Liability, to be Paid, after Year Five | 315.20M | as of 2025-12-31 |
| Lessee, Operating Lease, Liability, to be Paid | 739.80M | as of 2025-12-31 |
| FinancingReceivableExcludingAccruedInterestModifiedAccumulated | 51.30M | as of 2025-12-31 |
| Derivative, Collateral, Right to Reclaim Cash | 0 | as of 2025-12-31 |
| Deferred Tax Assets, Other | 94.00M | as of 2025-12-31 |
| Derivative, Collateral, Obligation to Return Cash | 2.70M | as of 2025-12-31 |
| Deferred Tax Assets, Gross | 466.60M | as of 2025-12-31 |
| Deferred Tax Assets, Valuation Allowance | 217.70M | as of 2025-12-31 |
| Deferred Tax Assets, Net of Valuation Allowance | 248.90M | as of 2025-12-31 |
| Lessee, Operating Lease, Liability, Undiscounted Excess Amount | 115.40M | as of 2025-12-31 |
| Deferred Tax Liabilities, Gross | 667.60M | as of 2025-12-31 |
| DebtSecuritiesAvailableForSaleAndHeldToMaturityFairValue | 56.42B | as of 2025-12-31 |
| DebtSecuritiesAvailableForSaleAndHeldToMaturityCumulativeUnrecognizedGain | 110.20M | as of 2025-12-31 |
| DebtSecuritiesAvailableForSaleAndHeldToMaturityCumulativeUnrecognizedLoss | 1.22B | as of 2025-12-31 |
| DebtSecuritiesAvailableForSaleAndHeldToMaturityAmortizedCostAfterAllowanceForCreditLoss | 57.53B | as of 2025-12-31 |
| Deferred Tax Liabilities, Deferred Expense, Capitalized Software | 423.60M | as of 2025-12-31 |
| DebtSecuritiesHeldToMaturityExcludingAccruedInterestCreditLossExpenseReversal | 2.80M | 2025-01-01 → 2025-12-31 |
| DebtSecuritiesHeldToMaturityExcludingAccruedInterestAllowanceForCreditLossRecovery | 0 | 2025-01-01 → 2025-12-31 |
| DebtSecuritiesHeldToMaturityExcludingAccruedInterestAllowanceForCreditLossWriteoff | 0 | 2025-01-01 → 2025-12-31 |
| Investment Company, Financial Support to Investee Contractually Required, Amount | 0 | as of 2025-12-31 |
| Deferred Tax Liabilities, Other | 108.90M | as of 2025-12-31 |
| Deferred Tax Liabilities, Net | 418.70M | as of 2025-12-31 |
| Hedged Asset, Fair Value Hedge | 7.67B | as of 2025-12-31 |
| Hedged Liability, Fair Value Hedge | 3.09B | as of 2025-12-31 |
| Hedged Asset, Fair Value Hedge, Cumulative Increase (Decrease) | 94.10M | as of 2025-12-31 |
| Hedged Liability, Fair Value Hedge, Cumulative Increase (Decrease) | -151.40M | as of 2025-12-31 |
| Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months | 15.20M | 2025-01-01 → 2025-12-31 |
| Gain (Loss) on Discontinuation of Cash Flow Hedge Due to Forecasted Transaction Probable of Not Occurring, Net | 0 | 2025-01-01 → 2025-12-31 |
| Defined Contribution Plan, Cost | 92.30M | 2025-01-01 → 2025-12-31 |
| Off-Balance Sheet, Credit Loss, Liability | 23.30M | as of 2025-12-31 |
| Off-Balance Sheet, Credit Loss, Liability, Credit Loss Expense (Reversal) | -7.10M | 2025-01-01 → 2025-12-31 |
| DebtSecuritiesAvailableForSaleExcludingAccruedInterestAllowanceForCreditLossWriteoff | 200.00K | 2025-01-01 → 2025-12-31 |
| Unrecognized Tax Benefits | 57.40M | as of 2025-12-31 |
| Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions | 7.10M | 2025-01-01 → 2025-12-31 |
| Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions | 6.00M | 2025-01-01 → 2025-12-31 |
| Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions | 2.50M | 2025-01-01 → 2025-12-31 |
| Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities | 4.70M | 2025-01-01 → 2025-12-31 |
| Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations | 0 | 2025-01-01 → 2025-12-31 |
| Unrecognized Tax Benefits that Would Impact Effective Tax Rate | 49.40M | as of 2025-12-31 |
| Financing Receivable, Held-for-Sale, Not Part of Disposal Group, after Valuation Allowance | 6.80M | as of 2025-12-31 |
| Income Tax Examination, Penalties and Interest Expense | -1.70M | 2025-01-01 → 2025-12-31 |
| Income Tax Examination, Penalties and Interest Accrued | 14.30M | as of 2025-12-31 |
| FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYear | 7.84B | as of 2025-12-31 |
| FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYear | 3.12B | as of 2025-12-31 |
| FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYear | 2.59B | as of 2025-12-31 |
| FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYear | 2.76B | as of 2025-12-31 |
| FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYear | 2.14B | as of 2025-12-31 |
| FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYear | 3.34B | as of 2025-12-31 |
| FinancingReceivableExcludingAccruedInterestRevolving | 19.44B | as of 2025-12-31 |
| FinancingReceivableExcludingAccruedInterestRevolvingConvertedToTermLoan | 715.00M | as of 2025-12-31 |
| FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYearWriteoff | 200.00K | 2025-01-01 → 2025-12-31 |
| FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYearWriteoff | 0 | 2025-01-01 → 2025-12-31 |
| FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearWriteoff | 0 | 2025-01-01 → 2025-12-31 |
| FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYearWriteoff | 2.10M | 2025-01-01 → 2025-12-31 |
| FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYearWriteoff | 0 | 2025-01-01 → 2025-12-31 |
| FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearWriteoff | 1.60M | 2025-01-01 → 2025-12-31 |
| FinancingReceivableExcludingAccruedInterestRevolvingWriteoff | 0 | 2025-01-01 → 2025-12-31 |
| FinancingReceivableExcludingAccruedInterestRevolvingConvertedToTermLoanWriteoff | 0 | 2025-01-01 → 2025-12-31 |
| Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Unfunded Commitments | 19.60M | as of 2025-12-31 |
| Financing Receivable, Nonaccrual, Interest Income | 4.10M | 2025-01-01 → 2025-12-31 |
| FinancingReceivableExcludingAccruedInterestNonaccrualNoAllowance | 48.20M | as of 2025-12-31 |
| FinancingReceivableExcludingAccruedInterestNonaccrual | 76.70M | as of 2025-12-31 |
| Derivative, Net Liability Position, Aggregate Fair Value | 306.70M | as of 2025-12-31 |
| Collateral Already Posted, Aggregate Fair Value | 299.10M | as of 2025-12-31 |
| Assets Needed for Immediate Settlement, Aggregate Fair Value | 7.60M | as of 2025-12-31 |
| Financing Receivable, Deferred Commitment Fee | 5.30M | as of 2025-12-31 |
| Mortgage Loans in Process of Foreclosure, Amount | 7.90M | as of 2025-12-31 |
| Derivative Liability, Fair Value, Gross Liability | 1.37B | as of 2025-12-31 |
| Derivative Asset, Fair Value, Gross Asset | 1.79B | as of 2025-12-31 |