| Current Federal Tax Expense (Benefit) | 1.12B | 2025-01-01 → 2025-12-31 |
| Securities Segregated under Securities Exchange Commission Regulation | 41.45B | as of 2025-12-31 |
| Current State and Local Tax Expense (Benefit) | 571.00M | 2025-01-01 → 2025-12-31 |
| Current Foreign Tax Expense (Benefit) | 2.78B | 2025-01-01 → 2025-12-31 |
| Current Income Tax Expense (Benefit) | 4.47B | 2025-01-01 → 2025-12-31 |
| Deferred Federal Income Tax Expense (Benefit) | 371.00M | 2025-01-01 → 2025-12-31 |
| Deferred State and Local Income Tax Expense (Benefit) | -83.00M | 2025-01-01 → 2025-12-31 |
| Deferred Foreign Income Tax Expense (Benefit) | -84.00M | 2025-01-01 → 2025-12-31 |
| Loans Receivable, Fair Value Disclosure | 4.91B | as of 2025-12-31 |
| Receivables, Fair Value Disclosure | 315.00M | as of 2025-12-31 |
| Alternative Investment | 1.74B | as of 2025-12-31 |
| Investments, Fair Value Disclosure | 124.18B | as of 2025-12-31 |
| Other Assets, Miscellaneous | 8.56B | as of 2025-12-31 |
| Securities Borrowed, Fair Value Disclosure | 51.58B | as of 2025-12-31 |
| Retained Interest, Fair Value Disclosure | 6.37B | as of 2025-12-31 |
| Other Assets, Fair Value Disclosure | 180.00M | as of 2025-12-31 |
| Loans from Other Federal Home Loan Banks | 5.53B | as of 2025-12-31 |
| Dividends, Preferred Stock | 876.00M | 2025-01-01 → 2025-12-31 |
| Securities Loaned or Sold under Agreements to Repurchase, Fair Value Disclosure | 11.99B | as of 2025-12-31 |
| Debt Securities, Trading, and Equity Securities, FV-NI | 656.80B | as of 2025-12-31 |
| Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount | 4.59B | 2025-01-01 → 2025-12-31 |
| Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount | 176.00M | 2025-01-01 → 2025-12-31 |
| Share-based Payment Arrangement, Expense, Tax Benefit | 621.00M | 2025-01-01 → 2025-12-31 |
| Deposits, Fair Value Disclosure | 76.57B | as of 2025-12-31 |
| Financial Liabilities Fair Value Disclosure | 512.33B | as of 2025-12-31 |
| EffectiveIncomeTaxRateReconciliationCrossBorderOtherAmount | -144.00M | 2025-01-01 → 2025-12-31 |
| Long-term Debt, Fair Value | 112.68B | as of 2025-12-31 |
| Securities Purchased under Agreements to Resell, Gross | 404.77B | as of 2025-12-31 |
| Short-term Debt, Fair Value | 59.76B | as of 2025-12-31 |
| Securities Purchased under Agreements to Resell, Liability | 278.76B | as of 2025-12-31 |
| Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount | 740.00M | as of 2025-12-31 |
| Effective Income Tax Rate Reconciliation, Tax Credit, Amount | 131.00M | 2025-01-01 → 2025-12-31 |
| Fair Value of Securities Received as Collateral that Can be Resold or Repledged | 1.31T | as of 2025-12-31 |
| Securities Purchased under Agreements to Resell, Not Offset, Policy Election Deduction | 119.72B | as of 2025-12-31 |
| Fair Value of Securities Received as Collateral that Have Been Resold or Repledged | 1.12T | as of 2025-12-31 |
| SecurityPurchasedUnderAgreementToResellAfterOffsetAndDeductionSubjectToMasterNettingArrangement | 6.29B | as of 2025-12-31 |
| Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-based Payment Arrangement, Amount | -347.00M | 2025-01-01 → 2025-12-31 |
| Affordable Housing Tax Credits and Other Tax Benefits, Amount | 520.00M | 2025-01-01 → 2025-12-31 |
| Loss Contingency, Range of Possible Loss, Portion Not Accrued | 1.40B | as of 2025-12-31 |
| Effective Income Tax Rate Reconciliation, Nondeductible Expense, Other, Amount | 118.00M | 2025-01-01 → 2025-12-31 |
| Amortization Method Qualified Affordable Housing Project Investments, Amortization | 440.00M | 2025-01-01 → 2025-12-31 |
| Securities Borrowed, Gross | 226.15B | as of 2025-12-31 |
| Securities Borrowed, Liability | 17.94B | as of 2025-12-31 |
| Securities Borrowed, Not Offset, Policy Election Deduction | 200.30B | as of 2025-12-31 |
| SecurityBorrowedAfterOffsetAndDeductionSubjectToMasterNettingArrangement | 7.91B | as of 2025-12-31 |
| Effective Income Tax Rate Reconciliation, Tax Contingency, Amount | 480.00M | 2025-01-01 → 2025-12-31 |
| Effective Income Tax Rate Reconciliation, Tax Exempt Income, Amount | 363.00M | 2025-01-01 → 2025-12-31 |
| Debt Securities, Available-for-sale, Unrealized Gain | 626.00M | 2025-01-01 → 2025-12-31 |
| Debt Securities, Available-for-sale, Realized Gain | 0 | 2025-01-01 → 2025-12-31 |
| Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount | 0 | 2025-01-01 → 2025-12-31 |
| Nonredeemable Noncontrolling Interest | 446.00M | as of 2025-12-31 |
| Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount | -160.00M | 2025-01-01 → 2025-12-31 |
| Finite-Lived Intangible Asset, Expected Amortization, Year One | 79.00M | as of 2025-12-31 |
| Finite-Lived Intangible Asset, Expected Amortization, Year Two | 79.00M | as of 2025-12-31 |
| Finite-Lived Intangible Asset, Expected Amortization, Year Three | 78.00M | as of 2025-12-31 |
| Finite-Lived Intangible Asset, Expected Amortization, Year Four | 78.00M | as of 2025-12-31 |
| Finite-Lived Intangible Asset, Expected Amortization, Year Five | 78.00M | as of 2025-12-31 |
| Derivative Asset, Fair Value, Gross Liability | 307.13B | as of 2025-12-31 |
| Treasury Stock, Value, Acquired, Cost Method | 12.36B | 2025-01-01 → 2025-12-31 |
| Derivative Liability, Fair Value, Gross Asset | 306.81B | as of 2025-12-31 |
| Intangible Assets, Gross (Excluding Goodwill) | 2.32B | as of 2025-12-31 |
| Derivative, Notional Amount | 43.53T | as of 2025-12-31 |
| Securities Sold under Agreements to Repurchase, Gross | 502.15B | as of 2025-12-31 |
| Securities Sold under Agreements to Repurchase, Asset | 278.76B | as of 2025-12-31 |
| Securities Sold under Agreements to Repurchase, Not Offset, Policy Election Deduction | 219.53B | as of 2025-12-31 |
| SecuritySoldUnderAgreementToRepurchaseAfterOffsetAndDeductionSubjectToMasterNettingArrangement | 3.85B | as of 2025-12-31 |
| Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | 14.00M | as of 2025-12-31 |
| Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 484.00M | as of 2025-12-31 |
| Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss | 498.00M | as of 2025-12-31 |
| Time Deposit Maturities, Year One | 158.78B | as of 2025-12-31 |
| Time Deposit Maturities, Year Two | 15.06B | as of 2025-12-31 |
| Securities Loaned, Gross | 71.58B | as of 2025-12-31 |
| Time Deposit Maturities, Year Three | 4.15B | as of 2025-12-31 |
| Securities Loaned, Asset | 17.94B | as of 2025-12-31 |
| Time Deposit Maturities, Year Four | 3.02B | as of 2025-12-31 |
| Time Deposit Maturities, Year Five | 2.49B | as of 2025-12-31 |
| Time Deposit Maturities, after Year Five | 1.76B | as of 2025-12-31 |
| Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months | 8.24B | as of 2025-12-31 |
| Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer | 14.13B | as of 2025-12-31 |
| Securities Loaned, Not Offset, Policy Election Deduction | 53.43B | as of 2025-12-31 |
| Debt Securities, Available-for-sale, Unrealized Loss Position | 22.37B | as of 2025-12-31 |
| SecurityLoanedAfterOffsetAndDeductionSubjectToMasterNettingArrangement | 210.00M | as of 2025-12-31 |
| Deferred Tax Assets, Operating Loss Carryforwards | 766.00M | as of 2025-12-31 |
| Financing Receivable, Allowance for Credit Loss, Recovery | 207.00M | 2025-01-01 → 2025-12-31 |
| Financing Receivable, Allowance for Credit Loss, Writeoff | 1.46B | 2025-01-01 → 2025-12-31 |
| Financing Receivable, Allowance for Credit Loss, Writeoff, after Recovery | 1.25B | 2025-01-01 → 2025-12-31 |
| Deferred Tax Assets, Tax Credit Carryforwards, Foreign | 336.00M | as of 2025-12-31 |
| Deferred Tax Assets, Tax Credit Carryforwards, General Business | 43.00M | as of 2025-12-31 |
| Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease) | -2.46B | 2025-01-01 → 2025-12-31 |
| Deferred Tax Assets, Tax Credit Carryforwards | 392.00M | as of 2025-12-31 |
| Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss | 115.00M | as of 2025-12-31 |
| Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain | 643.00M | as of 2025-12-31 |
| FinancingReceivableSale | 425.00M | 2025-01-01 → 2025-12-31 |
| FinancingReceivableExcludingAccruedInterestCreditLossExpenseReversal | -1.15B | 2025-01-01 → 2025-12-31 |
| Unrecorded Unconditional Purchase Obligation | 1.13B | as of 2025-12-31 |
| Fair Value, Option, Aggregate Differences, Loans and Long-term Receivables | 704.00M | as of 2025-12-31 |
| Fair Value, Option, Loans Held as Assets, Aggregate Amount in Nonaccrual Status | 1.94B | as of 2025-12-31 |
| Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits | 2.13B | as of 2025-12-31 |
| Lease, Cost | 475.00M | 2025-01-01 → 2025-12-31 |
| Cash Flows Between Transferor and Transferee, Beneficial Interest | 783.00M | 2025-01-01 → 2025-12-31 |
| Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Provision for Loan Losses | 814.00M | as of 2025-12-31 |
| Fair Value, Option, Loans Held as Assets, Aggregate Difference | 1.36B | as of 2025-12-31 |
| Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, Amortized Cost | 69.19B | as of 2025-12-31 |
| Fair Value, Option, Changes in Fair Value, Gain (Loss) | -13.24B | 2025-01-01 → 2025-12-31 |
| Right-of-Use Asset Obtained in Exchange for Operating Lease Liability | 319.00M | 2025-01-01 → 2025-12-31 |
| Fair Value, Option, Credit Risk, Gains (Losses) on Assets | 0 | 2025-01-01 → 2025-12-31 |
| Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value | 3.91B | 2025-01-01 → 2025-12-31 |
| Financing Receivable, Troubled Debt Restructuring, Postmodification | 848.00M | 2025-01-01 → 2025-12-31 |
| Lessee, Operating Lease, Liability, to be Paid, Year One | 381.00M | as of 2025-12-31 |
| Lessee, Operating Lease, Liability, to be Paid, Year Two | 348.00M | as of 2025-12-31 |
| Deferred Tax Assets, Unrealized Currency Losses | 1.40B | as of 2025-12-31 |
| Lessee, Operating Lease, Liability, to be Paid, Year Three | 307.00M | as of 2025-12-31 |
| Lessee, Operating Lease, Liability, to be Paid, Year Four | 269.00M | as of 2025-12-31 |
| Deferred Tax Assets, Other Comprehensive Loss | 1.18B | as of 2025-12-31 |
| Lessee, Operating Lease, Liability, to be Paid, Year Five | 201.00M | as of 2025-12-31 |
| Lessee, Operating Lease, Liability, to be Paid, after Year Five | 1.33B | as of 2025-12-31 |
| Lessee, Operating Lease, Liability, to be Paid | 2.83B | as of 2025-12-31 |
| Derivative, Collateral, Right to Reclaim Cash | 1.95B | as of 2025-12-31 |
| Deferred Tax Assets, Other | 640.00M | as of 2025-12-31 |
| Derivative, Collateral, Right to Reclaim Securities | 8.91B | as of 2025-12-31 |
| Derivative, Collateral, Obligation to Return Cash | 442.00M | as of 2025-12-31 |
| Financing Receivable, Troubled Debt Restructuring, Commitment to Lend | 191.00M | as of 2025-12-31 |
| Deferred Tax Assets, Gross | 11.39B | as of 2025-12-31 |
| Derivative, Collateral, Obligation to Return Securities | 20.96B | as of 2025-12-31 |
| Deferred Tax Assets, Valuation Allowance | 1.97B | as of 2025-12-31 |
| Deferred Tax Assets, Net of Valuation Allowance | 9.42B | as of 2025-12-31 |
| Lessee, Operating Lease, Liability, Undiscounted Excess Amount | 662.00M | as of 2025-12-31 |
| Deferred Tax Liabilities, Gross | 1.62B | as of 2025-12-31 |
| Financing Receivable, Troubled Debt Restructuring, Subsequent Default | 0 | 2025-01-01 → 2025-12-31 |
| Continuing Involvement with Transferred Financial Assets, Principal Amount Outstanding | 192.91B | as of 2025-12-31 |
| Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount | -94.00M | 2025-01-01 → 2025-12-31 |
| Deferred Tax Liabilities, Property, Plant and Equipment | 1.08B | as of 2025-12-31 |
| Debt, Long-term and Short-term, Combined Amount | 355.96B | as of 2025-12-31 |
| Assets, Fair Value Disclosure | 963.97B | as of 2025-12-31 |
| Other Liabilities, Fair Value Disclosure | 111.00M | as of 2025-12-31 |
| Financial and Nonfinancial Liabilities, Fair Value Disclosure | 774.88B | as of 2025-12-31 |
| Other Accounts Payable and Accrued Liabilities | 10.43B | as of 2025-12-31 |
| Transfers Accounted for as Secured Borrowings, Assets, Carrying Amount | 2.83B | as of 2025-12-31 |
| Transfers Accounted for as Secured Borrowings, Associated Liabilities, Carrying Amount | 2.75B | as of 2025-12-31 |
| Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months | 0 | 2025-01-01 → 2025-12-31 |
| Other Commitment, to be Paid, Year One | 260.98B | as of 2025-12-31 |
| Other Commitment, to be Paid, Year Two and Three | 86.69B | as of 2025-12-31 |
| Other Commitment, to be Paid, Year Four and Five | 121.33B | as of 2025-12-31 |
| Other Commitment, to be Paid, after Year Five | 28.12B | as of 2025-12-31 |
| Other Commitment | 497.12B | as of 2025-12-31 |
| Defined Contribution Plan, Cost | 405.00M | 2025-01-01 → 2025-12-31 |
| Off-Balance Sheet, Credit Loss, Liability | 731.00M | as of 2025-12-31 |
| Off-Balance Sheet, Credit Loss, Liability, Credit Loss Expense (Reversal) | 52.00M | 2025-01-01 → 2025-12-31 |
| Operating Loss Carryforwards, Valuation Allowance | 327.00M | as of 2025-12-31 |
| Unrecognized Tax Benefits | 2.60B | as of 2025-12-31 |
| Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions | 217.00M | 2025-01-01 → 2025-12-31 |
| Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions | 113.00M | 2025-01-01 → 2025-12-31 |
| Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions | 353.00M | 2025-01-01 → 2025-12-31 |
| Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities | 28.00M | 2025-01-01 → 2025-12-31 |
| Financing Receivable, Held-for-Sale | 22.07B | as of 2025-12-31 |
| Unrecognized Tax Benefits that Would Impact Effective Tax Rate | 2.20B | as of 2025-12-31 |
| Income Tax Examination, Penalties and Interest Expense | 149.00M | 2025-01-01 → 2025-12-31 |
| Amount of Restricted Net Assets for Consolidated and Unconsolidated Subsidiaries | 109.48B | as of 2025-12-31 |
| Income Tax Examination, Penalties and Interest Accrued | 669.00M | as of 2025-12-31 |
| Income (Loss) from Continuing Operations before Income Taxes, Domestic | 13.76B | 2025-01-01 → 2025-12-31 |
| Income (Loss) from Continuing Operations before Income Taxes, Foreign | 8.09B | 2025-01-01 → 2025-12-31 |
| Other Receivables | 185.84B | as of 2025-12-31 |
| Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis with Unobservable Inputs | -415.00M | as of 2025-12-31 |
| Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Gain (Loss) Included in Earnings | -1.70B | 2025-01-01 → 2025-12-31 |
| Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Purchases | 564.00M | 2025-01-01 → 2025-12-31 |
| Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Sales | 833.00M | 2025-01-01 → 2025-12-31 |
| Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Settlements | 531.00M | 2025-01-01 → 2025-12-31 |
| Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Transfers into Level 3 | 157.00M | 2025-01-01 → 2025-12-31 |
| Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Transfers out of Level 3 | 39.00M | 2025-01-01 → 2025-12-31 |
| Fair Value, Net Derivative Asset (Liability), Recurring Basis, Still Held, Unrealized Gain (Loss) | -1.23B | 2025-01-01 → 2025-12-31 |
| Banking Regulation, Tier One Leverage Capital, Actual | 118.94B | as of 2025-12-31 |
| Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Unfunded Commitments | 741.00M | as of 2025-12-31 |
| Credit Derivative, Maximum Exposure, Undiscounted | 830.04B | as of 2025-12-31 |
| Financing Receivable, Nonaccrual | 3.39B | as of 2025-12-31 |
| Credit Risk Derivative Assets, at Fair Value | 10.21B | as of 2025-12-31 |
| Credit Risk Derivative Liabilities, at Fair Value | 3.50B | as of 2025-12-31 |
| Credit Risk Derivatives, at Fair Value, Net | 6.71B | as of 2025-12-31 |
| Credit Derivative, Purchased Credit Protection | 915.35B | 2025-01-01 → 2025-12-31 |
| Derivative, Net Liability Position, Aggregate Fair Value | 33.47B | as of 2025-12-31 |
| Collateral Already Posted, Aggregate Fair Value | 36.20B | as of 2025-12-31 |
| Embedded Derivative, Fair Value of Embedded Derivative Asset | 428.00M | as of 2025-12-31 |
| Embedded Derivative, Fair Value of Embedded Derivative Liability | 304.00M | as of 2025-12-31 |
| Embedded Derivative, Fair Value of Embedded Derivative, Net | 124.00M | as of 2025-12-31 |
| Debt Securities, Available-for-sale, Amortized Cost | 99.12B | as of 2025-12-31 |
| Derivative Liability, Fair Value, Gross Liability | 391.21B | as of 2025-12-31 |
| Derivative Asset, Fair Value, Gross Asset | 360.08B | as of 2025-12-31 |