| Current Federal Tax Expense (Benefit) | 388.00M | 2025-01-01 → 2025-12-31 |
| Current State and Local Tax Expense (Benefit) | 121.00M | 2025-01-01 → 2025-12-31 |
| Current Income Tax Expense (Benefit) | 509.00M | 2025-01-01 → 2025-12-31 |
| Deferred Federal Income Tax Expense (Benefit) | 84.00M | 2025-01-01 → 2025-12-31 |
| Deferred State and Local Income Tax Expense (Benefit) | -6.00M | 2025-01-01 → 2025-12-31 |
| Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense | 11.00M | 2025-01-01 → 2025-12-31 |
| Share-based Payment Arrangement, Expense | 69.00M | 2025-01-01 → 2025-12-31 |
| Dividends, Preferred Stock | 91.00M | 2025-01-01 → 2025-12-31 |
| Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount | 576.00M | 2025-01-01 → 2025-12-31 |
| Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount | 55.00M | 2025-01-01 → 2025-12-31 |
| Share-based Payment Arrangement, Expense, after Tax | 52.00M | 2025-01-01 → 2025-12-31 |
| Share-based Payment Arrangement, Expense, Tax Benefit | 17.00M | 2025-01-01 → 2025-12-31 |
| Interest Revenue (Expense), Net | 4.99B | 2025-01-01 → 2025-12-31 |
| Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount | 68.00M | as of 2025-12-31 |
| Effective Income Tax Rate Reconciliation, Tax Credit, Other, Amount | 6.00M | 2025-01-01 → 2025-12-31 |
| Effective Income Tax Rate Reconciliation, Tax Credit, Amount | 36.00M | 2025-01-01 → 2025-12-31 |
| Equity Securities, FV-NI, Unrealized Gain | 20.00M | 2025-01-01 → 2025-12-31 |
| Effective Income Tax Rate Reconciliation, Nondeductible Expense, Amount | 23.00M | 2025-01-01 → 2025-12-31 |
| Equity Securities without Readily Determinable Fair Value, Amount | 64.00M | as of 2025-12-31 |
| Effective Income Tax Rate Reconciliation, Tax Exempt Income, Amount | 40.00M | 2025-01-01 → 2025-12-31 |
| Debt Securities, Available-for-sale, Realized Gain | 1.00M | 2025-01-01 → 2025-12-31 |
| Debt Securities, Available-for-sale, Realized Loss | 54.00M | 2025-01-01 → 2025-12-31 |
| Debt Securities, Available-for-sale, Realized Gain (Loss) | -53.00M | 2025-01-01 → 2025-12-31 |
| Financing Receivable, 90 Days or More Past Due, Still Accruing | 259.00M | as of 2025-12-31 |
| Effective Income Tax Rate Reconciliation, Other Adjustments, Amount | 1.00M | 2025-01-01 → 2025-12-31 |
| Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, Year One | 292.00M | as of 2025-12-31 |
| Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year One Through Five | 1.93B | as of 2025-12-31 |
| Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10 | 1.00B | as of 2025-12-31 |
| Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 10 | 71.00M | as of 2025-12-31 |
| Interest-bearing Domestic Deposit, Demand | 25.68B | as of 2025-12-31 |
| Interest-bearing Domestic Deposit, Money Market | 40.12B | as of 2025-12-31 |
| Defined Benefit Plan, Service Cost | 19.00M | 2025-01-01 → 2025-12-31 |
| Defined Benefit Plan, Interest Cost | 85.00M | 2025-01-01 → 2025-12-31 |
| Defined Benefit Plan, Expected Return (Loss) on Plan Assets | 123.00M | 2025-01-01 → 2025-12-31 |
| Derivative, Notional Amount | 171.14B | as of 2025-12-31 |
| Interest-bearing Domestic Deposit, Time Deposits | 13.89B | as of 2025-12-31 |
| Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, Year One | 291.00M | as of 2025-12-31 |
| Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year One Through Five | 1.91B | as of 2025-12-31 |
| Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10 | 994.00M | as of 2025-12-31 |
| Defined Benefit Plan, Amortization of Gain (Loss) | -25.00M | 2025-01-01 → 2025-12-31 |
| Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 10 | 69.00M | as of 2025-12-31 |
| Defined Benefit Plan, Net Periodic Benefit Cost (Credit) | 9.00M | 2025-01-01 → 2025-12-31 |
| Defined Benefit Plan, Plan Assets, Amount | 1.88B | as of 2025-12-31 |
| Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | 4.00M | as of 2025-12-31 |
| Defined Benefit Plan, Benefit Obligation | 1.58B | as of 2025-12-31 |
| Impairment of Intangible Assets (Excluding Goodwill) | 0 | 2025-01-01 → 2025-12-31 |
| Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 869.00M | as of 2025-12-31 |
| Defined Benefit Plan, Funded (Unfunded) Status of Plan | 298.00M | as of 2025-12-31 |
| Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss | 873.00M | as of 2025-12-31 |
| Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss) | 36.00M | 2025-01-01 → 2025-12-31 |
| Defined Benefit Plan, Benefit Obligation, Benefits Paid | 162.00M | 2025-01-01 → 2025-12-31 |
| Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax | 299.00M | as of 2025-12-31 |
| Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax | 873.00M | as of 2025-12-31 |
| Time Deposit Maturities, Year One | 13.14B | as of 2025-12-31 |
| Time Deposit Maturities, Year Two | 615.00M | as of 2025-12-31 |
| Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Settlement | 6.00M | 2025-01-01 → 2025-12-31 |
| Time Deposit Maturities, Year Three | 74.00M | as of 2025-12-31 |
| Time Deposit Maturities, Year Four | 38.00M | as of 2025-12-31 |
| Time Deposit Maturities, Year Five | 18.00M | as of 2025-12-31 |
| Time Deposit Maturities, after Year Five | 4.00M | as of 2025-12-31 |
| Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months | 957.00M | as of 2025-12-31 |
| Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer | 12.43B | as of 2025-12-31 |
| Debt Securities, Available-for-sale, Unrealized Loss Position | 13.39B | as of 2025-12-31 |
| Defined Benefit Plan, Plan Assets, Increase (Decrease) for Actual Return (Loss) | -161.00M | 2025-01-01 → 2025-12-31 |
| Deferred Tax Assets, Operating Loss Carryforwards, State and Local | 19.00M | as of 2025-12-31 |
| Defined Benefit Plan, Plan Assets, Contributions by Employer | 13.00M | 2025-01-01 → 2025-12-31 |
| Defined Benefit Plan, Plan Assets, Benefits Paid | 162.00M | 2025-01-01 → 2025-12-31 |
| Defined Benefit Plan, Plan Assets, Payment for Settlement | 6.00M | 2025-01-01 → 2025-12-31 |
| Defined Benefit Plan, Plan Assets, Administration Expense | 3.00M | 2025-01-01 → 2025-12-31 |
| Deferred Tax Assets, Tax Credit Carryforwards, General Business | 2.00M | as of 2025-12-31 |
| Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss | 59.00M | as of 2025-12-31 |
| Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain | 37.00M | as of 2025-12-31 |
| FinancingReceivableExcludingAccruedInterestCreditLossExpenseReversal | 456.00M | 2025-01-01 → 2025-12-31 |
| FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff | 605.00M | 2025-01-01 → 2025-12-31 |
| FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossRecovery | 92.00M | 2025-01-01 → 2025-12-31 |
| Operating Lease, Cost | 85.00M | 2025-01-01 → 2025-12-31 |
| Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position | 298.00M | as of 2025-12-31 |
| FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoffAfterRecovery | 513.00M | 2025-01-01 → 2025-12-31 |
| Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Provision for Loan Losses | 426.00M | as of 2025-12-31 |
| Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value | 72.00M | 2025-01-01 → 2025-12-31 |
| Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Accrued Liabilities | 33.00M | as of 2025-12-31 |
| Defined Benefit Plan, Accumulated Other Comprehensive Income (Loss), Gain (Loss), before Tax | 526.00M | as of 2025-12-31 |
| Lessee, Operating Lease, Liability, to be Paid, Year One | 91.00M | as of 2025-12-31 |
| Lessee, Operating Lease, Liability, to be Paid, Year Two | 85.00M | as of 2025-12-31 |
| Deferred Tax Assets, Unrealized Currency Losses | 522.00M | as of 2025-12-31 |
| Lessee, Operating Lease, Liability, to be Paid, Year Three | 78.00M | as of 2025-12-31 |
| Lessee, Operating Lease, Liability, to be Paid, Year Four | 67.00M | as of 2025-12-31 |
| Lessee, Operating Lease, Liability, to be Paid, Year Five | 55.00M | as of 2025-12-31 |
| Lessee, Operating Lease, Liability, to be Paid, after Year Five | 262.00M | as of 2025-12-31 |
| Lessee, Operating Lease, Liability, to be Paid | 638.00M | as of 2025-12-31 |
| FinancingReceivableExcludingAccruedInterestModifiedPeriod | 494.00M | 2025-01-01 → 2025-12-31 |
| Deferred Tax Assets, Other | 27.00M | as of 2025-12-31 |
| Derivative Liability, Collateral, Right to Reclaim Cash, Offset | 123.00M | as of 2025-12-31 |
| FinancingReceivableExcludingAccruedInterestModifiedPast12Months | 494.00M | as of 2025-12-31 |
| Deferred Tax Assets, Gross | 1.16B | as of 2025-12-31 |
| Deferred Tax Assets, Valuation Allowance | 18.00M | as of 2025-12-31 |
| Derivative Asset, Collateral, Obligation to Return Cash, Offset | 83.00M | as of 2025-12-31 |
| Deferred Tax Assets, Net of Valuation Allowance | 1.14B | as of 2025-12-31 |
| Lessee, Operating Lease, Liability, Undiscounted Excess Amount | 99.00M | as of 2025-12-31 |
| Deferred Tax Liabilities, Gross | 895.00M | as of 2025-12-31 |
| Deferred Tax Assets, Net | 244.00M | as of 2025-12-31 |
| Financing Receivable, Troubled Debt Restructuring, Subsequent Default | 109.00M | 2025-01-01 → 2025-12-31 |
| Sales-type and Direct Financing Leases, Lease Receivable | 1.26B | as of 2025-12-31 |
| Deferred Tax Liabilities, Property, Plant and Equipment | 87.00M | as of 2025-12-31 |
| Deferred Tax Liabilities, Mortgage Servicing Rights | 92.00M | as of 2025-12-31 |
| Deferred Tax Liabilities, Leasing Arrangements | 362.00M | as of 2025-12-31 |
| AOCI before Tax, Attributable to Parent | -2.06B | as of 2025-12-31 |
| Sales-type and Direct Financing Leases, Interest Income | 70.00M | 2025-01-01 → 2025-12-31 |
| AOCI Tax, Attributable to Parent | 522.00M | as of 2025-12-31 |
| Deferred Tax Liabilities, Deferred Expense | 33.00M | as of 2025-12-31 |
| Deferred Tax Liabilities, Goodwill and Intangible Assets | 138.00M | as of 2025-12-31 |
| Deferred Tax Liabilities, Other | 62.00M | as of 2025-12-31 |
| Hedged Asset, Fair Value Hedge, Last-of-Layer, Amount | 2.50B | as of 2025-12-31 |
| Hedged Asset, Fair Value Hedge, Last-of-Layer, Cumulative Increase (Decrease) | 3.00M | as of 2025-12-31 |
| Prepayable Financial Asset Closed Portfolio, Last-of-Layer, Amortized Cost | 6.10B | as of 2025-12-31 |
| Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months | 66.00M | 2025-01-01 → 2025-12-31 |
| Gain (Loss) on Discontinuation of Cash Flow Hedge Due to Forecasted Transaction Probable of Not Occurring, Net | 2.00M | 2025-01-01 → 2025-12-31 |
| Defined Contribution Plan, Cost | 76.00M | 2025-01-01 → 2025-12-31 |
| Defined Contribution Plan, Employer Discretionary Contribution Amount | 27.00M | 2025-01-01 → 2025-12-31 |
| Unrecognized Tax Benefits | 47.00M | as of 2025-12-31 |
| Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions | 46.00M | 2025-01-01 → 2025-12-31 |
| Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions | 3.00M | 2025-01-01 → 2025-12-31 |
| Unrecognized Tax Benefits, Decrease Resulting from Current Period Tax Positions | 1.00M | 2025-01-01 → 2025-12-31 |
| Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities | 1.00M | 2025-01-01 → 2025-12-31 |
| Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations | 8.00M | 2025-01-01 → 2025-12-31 |
| Sales-Type and Direct Financing Leases, Lease Receivable, to be Received, Year Two | 266.00M | as of 2025-12-31 |
| Sales-Type and Direct Financing Leases, Lease Receivable, to be Received, Year Three | 208.00M | as of 2025-12-31 |
| Sales-Type and Direct Financing Leases, Lease Receivable, to be Received, Year Four | 147.00M | as of 2025-12-31 |
| Sales-Type and Direct Financing Leases, Lease Receivable, to be Received, Year Five | 111.00M | as of 2025-12-31 |
| Sales-Type and Direct Financing Leases, Lease Receivable, to be Received, after Year Five | 207.00M | as of 2025-12-31 |
| Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received | 1.26B | as of 2025-12-31 |
| Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received, Next Rolling Twelve Months | 324.00M | as of 2025-12-31 |
| Financing Receivable, Held-for-Sale, Not Part of Disposal Group, after Valuation Allowance | 511.00M | as of 2025-12-31 |
| Leveraged Leases, Net Investment in Leveraged Leases Disclosure, Rental Receivables, Net | 86.00M | as of 2025-12-31 |
| Leveraged Leases, Net Investment in Leveraged Leases Disclosure, Deferred Income | 23.00M | as of 2025-12-31 |
| FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYear | 17.58B | as of 2025-12-31 |
| FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYear | 10.43B | as of 2025-12-31 |
| FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYear | 8.13B | as of 2025-12-31 |
| FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYear | 11.11B | as of 2025-12-31 |
| FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYear | 8.20B | as of 2025-12-31 |
| FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYear | 13.53B | as of 2025-12-31 |
| FinancingReceivableExcludingAccruedInterestRevolving | 26.22B | as of 2025-12-31 |
| FinancingReceivableExcludingAccruedInterestRevolvingConvertedToTermLoan | 96.00M | as of 2025-12-31 |
| FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYearWriteoff | 60.00M | 2025-01-01 → 2025-12-31 |
| FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYearWriteoff | 80.00M | 2025-01-01 → 2025-12-31 |
| FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearWriteoff | 94.00M | 2025-01-01 → 2025-12-31 |
| FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYearWriteoff | 109.00M | 2025-01-01 → 2025-12-31 |
| FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYearWriteoff | 51.00M | 2025-01-01 → 2025-12-31 |
| FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearWriteoff | 28.00M | 2025-01-01 → 2025-12-31 |
| FinancingReceivableExcludingAccruedInterestRevolvingWriteoff | 183.00M | 2025-01-01 → 2025-12-31 |
| Federal Home Loan Bank, Advances, General Debt Obligations, Maximum Amount Available | 92.90B | as of 2025-12-31 |
| Credit Derivative, Maximum Exposure, Undiscounted | 622.00M | as of 2025-12-31 |
| Financing Receivable, Nonaccrual | 698.00M | as of 2025-12-31 |
| Financing Receivable, Nonaccrual, No Allowance | 109.00M | as of 2025-12-31 |
| Derivative, Net Liability Position, Aggregate Fair Value | 54.00M | as of 2025-12-31 |
| Collateral Already Posted, Aggregate Fair Value | 51.00M | as of 2025-12-31 |
| Debt Securities, Available-for-sale, Amortized Cost | 28.13B | as of 2025-12-31 |
| Financing Receivable, Unamortized Loan Fee (Cost) and Purchase Premium (Discount) | 930.00M | as of 2025-12-31 |
| Unused Commitments to Extend Credit | 68.24B | as of 2025-12-31 |
| Derivative Liability, Fair Value, Gross Liability | 1.45B | as of 2025-12-31 |
| Derivative Asset, Fair Value, Gross Asset | 1.33B | as of 2025-12-31 |