| Finance Lease, Right-of-Use Asset, Accumulated Amortization | 182.00M | as of 2025-12-31 |
| Current Federal Tax Expense (Benefit) | 375.00M | 2025-01-01 → 2025-12-31 |
| Current State and Local Tax Expense (Benefit) | 96.00M | 2025-01-01 → 2025-12-31 |
| Current Foreign Tax Expense (Benefit) | 404.00M | 2025-01-01 → 2025-12-31 |
| Current Income Tax Expense (Benefit) | 875.00M | 2025-01-01 → 2025-12-31 |
| Deferred Federal Income Tax Expense (Benefit) | -133.00M | 2025-01-01 → 2025-12-31 |
| Deferred State and Local Income Tax Expense (Benefit) | -1.00M | 2025-01-01 → 2025-12-31 |
| Deferred Foreign Income Tax Expense (Benefit) | 45.00M | 2025-01-01 → 2025-12-31 |
| Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, Accumulated Depreciation and Amortization | 7.05B | as of 2025-12-31 |
| Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, after Accumulated Depreciation and Amortization | 3.17B | as of 2025-12-31 |
| Other Assets, Miscellaneous | 3.45B | as of 2025-12-31 |
| Other Assets, Fair Value Disclosure | 854.00M | as of 2025-12-31 |
| Dividends, Preferred Stock, Cash | 226.00M | 2025-01-01 → 2025-12-31 |
| Debt Securities, Trading, and Equity Securities, FV-NI | 827.00M | as of 2025-12-31 |
| Derivative Asset, Fair Value, Gross Liability and Obligation to Return Cash, Offset | 10.10B | as of 2025-12-31 |
| Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount | 783.00M | 2025-01-01 → 2025-12-31 |
| Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount | 81.00M | 2025-01-01 → 2025-12-31 |
| Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Amount | 45.00M | 2025-01-01 → 2025-12-31 |
| EffectiveIncomeTaxRateReconciliationCrossBorderTaxEffectAmount | 7.00M | 2025-01-01 → 2025-12-31 |
| Effective Income Tax Rate Reconciliation, Tax Credit, Amount | 68.00M | 2025-01-01 → 2025-12-31 |
| Fair Value of Securities Received as Collateral that Can be Resold or Repledged | 19.21B | as of 2025-12-31 |
| Fair Value of Securities Received as Collateral that Have Been Resold or Repledged | 12.11B | as of 2025-12-31 |
| Contract with Customer, Liability, Revenue Recognized | 121.00M | 2025-01-01 → 2025-12-31 |
| Loss Contingency, Estimate of Possible Loss | 60.00M | as of 2025-12-31 |
| Line of Credit Facility, Maximum Borrowing Capacity | 1.02B | as of 2025-12-31 |
| Equity Securities without Readily Determinable Fair Value, Amount | 585.00M | as of 2025-12-31 |
| Restructuring Reserve, Accrual Adjustment | 326.00M | 2025-01-01 → 2025-12-31 |
| Effective Income Tax Rate Reconciliation, Tax Contingency, Amount | -35.00M | 2025-01-01 → 2025-12-31 |
| SegmentReportingOtherItemAmount | 1.98B | 2025-01-01 → 2025-12-31 |
| Dividends, Common Stock, Cash | 909.00M | 2025-01-01 → 2025-12-31 |
| Time Deposits, at or Above FDIC Insurance Limit | 2.67B | as of 2025-12-31 |
| Finite Lived Intangible Assets, Foreign Currency Translation Gain (Loss) | 35.00M | 2025-01-01 → 2025-12-31 |
| Effective Income Tax Rate Reconciliation, Tax Exempt Income, Amount | 27.00M | 2025-01-01 → 2025-12-31 |
| TimeDepositLiabilityUninsuredMaturityThreeMonthsOrLess | 1.16B | as of 2025-12-31 |
| TimeDepositLiabilityUninsuredMaturityOverThreeMonthsThroughSixMonths | 1.51B | as of 2025-12-31 |
| Financing Receivable, Accrued Interest, before Allowance for Credit Loss | 338.00M | as of 2025-12-31 |
| Derivative Asset, Securities Purchased under Agreements to Resell, Securities Borrowed, Gross | 312.08B | as of 2025-12-31 |
| Debt Securities, Available-for-sale, Realized Gain (Loss) | 4.00M | 2025-01-01 → 2025-12-31 |
| Derivative Asset, Securities Purchased under Agreements to Resell, Securities Borrowed, Liability | 262.88B | as of 2025-12-31 |
| Derivative Asset, Securities Purchased under Agreements to Resell, Securities Borrowed, Collateral, Obligation to Return Cash | 43.64B | as of 2025-12-31 |
| Derivative Asset, Securities Purchased under Agreements to Resell, Securities Borrowed, Amount Offset Against Collateral | 5.56B | as of 2025-12-31 |
| Finite-Lived Intangible Asset, Expected Amortization, Year One | 222.00M | as of 2025-12-31 |
| Finite-Lived Intangible Asset, Expected Amortization, Year Two | 185.00M | as of 2025-12-31 |
| Loss Contingency Accrual | 43.00M | as of 2025-12-31 |
| Finite-Lived Intangible Asset, Expected Amortization, Year Three | 132.00M | as of 2025-12-31 |
| Finite-Lived Intangible Asset, Expected Amortization, Year Four | 68.00M | as of 2025-12-31 |
| Finite-Lived Intangible Asset, Expected Amortization, Year Five | 56.00M | as of 2025-12-31 |
| Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, Year One | 11.88B | as of 2025-12-31 |
| Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year One Through Five | 34.03B | as of 2025-12-31 |
| Share-based Payment Arrangement, Accelerated Cost | 79.00M | 2025-01-01 → 2025-12-31 |
| Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10 | 4.21B | as of 2025-12-31 |
| Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 10 | 16.85B | as of 2025-12-31 |
| Derivative Asset, Fair Value, Gross Liability | 10.10B | as of 2025-12-31 |
| Derivative Asset, Fair Value, Amount Not Offset Against Collateral | 4.16B | as of 2025-12-31 |
| Treasury Stock, Value, Acquired, Par Value Method | 1.21B | 2025-01-01 → 2025-12-31 |
| Derivative Liability, Fair Value, Gross Asset | 9.24B | as of 2025-12-31 |
| Net Income (Loss) Available to Common Stockholders, Diluted | 2.72B | 2025-01-01 → 2025-12-31 |
| Derivative Liability, Fair Value, Amount Not Offset Against Collateral | 5.03B | as of 2025-12-31 |
| Capitalized Contract Cost, Gross | 1.19B | as of 2025-12-31 |
| Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, Year One | 11.90B | as of 2025-12-31 |
| Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year One Through Five | 34.14B | as of 2025-12-31 |
| Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10 | 4.21B | as of 2025-12-31 |
| Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 10 | 16.91B | as of 2025-12-31 |
| Derivative Liability, Fair Value, Gross Asset and Right to Reclaim Cash, Offset | 9.24B | as of 2025-12-31 |
| Securities Sold under Agreements to Repurchase, Gross | 243.60B | as of 2025-12-31 |
| Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | 35.00M | as of 2025-12-31 |
| Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 62.00M | as of 2025-12-31 |
| Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss | 97.00M | as of 2025-12-31 |
| Deposit Liabilities, Collateral Issued, Financial Instruments | 1.60B | as of 2025-12-31 |
| Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax | 278.00M | as of 2025-12-31 |
| Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax | 97.00M | as of 2025-12-31 |
| Securities Loaned, Gross | 30.19B | as of 2025-12-31 |
| Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months | 8.13B | as of 2025-12-31 |
| Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer | 8.27B | as of 2025-12-31 |
| Debt Securities, Available-for-sale, Unrealized Loss Position | 16.40B | as of 2025-12-31 |
| Deferred Tax Assets, Operating Loss Carryforwards, Foreign | 130.00M | as of 2025-12-31 |
| Deferred Tax Assets, Operating Loss Carryforwards, State and Local | 21.00M | as of 2025-12-31 |
| Derivative Asset, Fair Value, Amount Offset Against Collateral | 3.20B | as of 2025-12-31 |
| Stock Issued During Period, Value, New Issues | 743.00M | 2025-01-01 → 2025-12-31 |
| Derivative Liability, Fair Value, Amount Offset Against Collateral | 4.27B | as of 2025-12-31 |
| Goodwill, Acquired During Period | 243.00M | 2025-01-01 → 2025-12-31 |
| Deferred Tax Assets, Tax Credit Carryforwards | 656.00M | as of 2025-12-31 |
| Goodwill, Foreign Currency Translation Gain (Loss) | 225.00M | 2025-01-01 → 2025-12-31 |
| Deferred Tax Assets, Other Loss Carryforwards | 2.00M | as of 2025-12-31 |
| Derivative Liability, Securities Sold under Agreements to Repurchase, Securities Loaned, Gross | 288.05B | as of 2025-12-31 |
| Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Postretirement Benefits | 229.00M | as of 2025-12-31 |
| Derivative Liability, Securities Sold under Agreements to Repurchase, Securities Loaned, Asset | 262.01B | as of 2025-12-31 |
| Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Pensions | 13.00M | as of 2025-12-31 |
| FinancingReceivableExcludingAccruedInterestCreditLossExpenseReversal | 59.00M | 2025-01-01 → 2025-12-31 |
| Derivative Liability, Securities Sold under Agreements to Repurchase, Securities Loaned, Collateral, Right to Reclaim Cash | 20.92B | as of 2025-12-31 |
| Unrecorded Unconditional Purchase Obligation | 80.00M | as of 2025-12-31 |
| Operating Lease, Cost | 179.00M | 2025-01-01 → 2025-12-31 |
| Lease, Cost | 216.00M | 2025-01-01 → 2025-12-31 |
| Right-of-Use Asset Obtained in Exchange for Finance Lease Liability | 64.00M | 2025-01-01 → 2025-12-31 |
| Derivative Liability, Securities Sold under Agreements to Repurchase, Securities Loaned, Amount Offset Against Collateral | 5.11B | as of 2025-12-31 |
| Right-of-Use Asset Obtained in Exchange for Operating Lease Liability | 214.00M | 2025-01-01 → 2025-12-31 |
| Finance Lease, Liability, to be Paid, Year One | 34.00M | as of 2025-12-31 |
| Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Restructuring Charges | 166.00M | as of 2025-12-31 |
| Finance Lease, Liability, to be Paid, Year Two | 29.00M | as of 2025-12-31 |
| Finance Lease, Liability, to be Paid, Year Three | 29.00M | as of 2025-12-31 |
| Finance Lease, Liability, to be Paid, Year Four | 22.00M | as of 2025-12-31 |
| Finance Lease, Liability, to be Paid, Year Five | 0 | as of 2025-12-31 |
| Finance Lease, Liability, to be Paid, after Year Five | 0 | as of 2025-12-31 |
| Finance Lease, Liability, Payment, Due | 114.00M | as of 2025-12-31 |
| Finance Lease, Liability, Undiscounted Excess Amount | 8.00M | as of 2025-12-31 |
| Lessee, Operating Lease, Liability, to be Paid, Year One | 174.00M | as of 2025-12-31 |
| Lessee, Operating Lease, Liability, to be Paid, Year Two | 154.00M | as of 2025-12-31 |
| Lessee, Operating Lease, Liability, to be Paid, Year Three | 136.00M | as of 2025-12-31 |
| Lessee, Operating Lease, Liability, to be Paid, Year Four | 101.00M | as of 2025-12-31 |
| Lessee, Operating Lease, Liability, to be Paid, Year Five | 83.00M | as of 2025-12-31 |
| Lessee, Operating Lease, Liability, to be Paid, after Year Five | 410.00M | as of 2025-12-31 |
| Lessee, Operating Lease, Liability, to be Paid | 1.06B | as of 2025-12-31 |
| Deferred Tax Assets, Gross | 1.72B | as of 2025-12-31 |
| Deferred Tax Assets, Valuation Allowance | 198.00M | as of 2025-12-31 |
| Deferred Tax Assets, Net of Valuation Allowance | 1.52B | as of 2025-12-31 |
| Lessee, Operating Lease, Liability, Undiscounted Excess Amount | 195.00M | as of 2025-12-31 |
| Deferred Tax Liabilities, Gross | 972.00M | as of 2025-12-31 |
| Assets, Fair Value Disclosure | 72.99B | as of 2025-12-31 |
| Deferred Tax Liabilities, Investments | 45.00M | as of 2025-12-31 |
| Deferred Tax Liabilities, Leasing Arrangements | 240.00M | as of 2025-12-31 |
| Financial and Nonfinancial Liabilities, Fair Value Disclosure | 5.03B | as of 2025-12-31 |
| Marketable Securities, Unrealized Gain (Loss) | -4.12B | 2025-01-01 → 2025-12-31 |
| OCI, before Reclassifications, Net of Tax, Attributable to Parent | 847.00M | 2025-01-01 → 2025-12-31 |
| Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent | -210.00M | 2025-01-01 → 2025-12-31 |
| Change in Unrealized Gain (Loss) on Fair Value Hedging Instruments | -195.00M | 2025-01-01 → 2025-12-31 |
| Deferred Tax Liabilities, Other | 33.00M | as of 2025-12-31 |
| Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge | 194.00M | 2025-01-01 → 2025-12-31 |
| Derivative, Fair Value Hedge, Included in Effectiveness, Gain (Loss) | -362.00M | 2025-01-01 → 2025-12-31 |
| Equity Securities without Readily Determinable Fair Value, Impairment Loss, Annual Amount | 0 | 2025-01-01 → 2025-12-31 |
| Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months | -42.00M | 2025-01-01 → 2025-12-31 |
| Finite-lived Intangible Assets Acquired | 34.00M | 2025-01-01 → 2025-12-31 |
| Defined Contribution Plan, Cost | 226.00M | 2025-01-01 → 2025-12-31 |
| Interest Rate Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months, Net | -48.00M | as of 2025-12-31 |
| InterestIncomeFinancingReceivableBeforeAllowanceForCreditLoss | 4.00M | 2025-01-01 → 2025-12-31 |
| Unrecognized Tax Benefits | 248.00M | as of 2025-12-31 |
| Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions | 48.00M | 2025-01-01 → 2025-12-31 |
| Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities | 2.00M | 2025-01-01 → 2025-12-31 |
| Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations | 58.00M | 2025-01-01 → 2025-12-31 |
| Loans Receivable with Variable Rates of Interest | 42.37B | as of 2025-12-31 |
| Loans Receivable with Fixed Rates of Interest | 2.45B | as of 2025-12-31 |
| Financing Receivable, Held-for-Sale | 92.00M | as of 2025-12-31 |
| Unrecognized Tax Benefits that Would Impact Effective Tax Rate | 230.00M | as of 2025-12-31 |
| Income Tax Examination, Interest Expense | 9.00M | 2025-01-01 → 2025-12-31 |
| Pension and Other Postretirement Benefits Cost (Reversal of Cost) | 16.00M | 2025-01-01 → 2025-12-31 |
| Income Tax Examination, Interest Accrued | 29.00M | as of 2025-12-31 |
| FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYear | 9.88B | as of 2025-12-31 |
| FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYear | 5.57B | as of 2025-12-31 |
| FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYear | 1.02B | as of 2025-12-31 |
| FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYear | 898.00M | as of 2025-12-31 |
| FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYear | 1.83B | as of 2025-12-31 |
| FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYear | 1.69B | as of 2025-12-31 |
| FinancingReceivableExcludingAccruedInterestRevolving | 25.80B | as of 2025-12-31 |
| Financing Receivable, Nonaccrual | 258.00M | as of 2025-12-31 |
| Unused Commitments to Extend Credit | 35.70B | as of 2025-12-31 |
| Derivative Liability, Fair Value, Gross Liability | 14.26B | as of 2025-12-31 |
| Derivative Asset, Fair Value, Gross Asset | 14.26B | as of 2025-12-31 |
| Securities Loaned and Securities Sold under Agreement to Repurchase, Gross Including Not Subject to Master Netting Arrangement | 273.79B | as of 2025-12-31 |