| Life Insurance, Corporate or Bank Owned, Change in Value | 123.00M | 2025-01-01 → 2025-12-31 |
| Current Federal Tax Expense (Benefit) | 391.00M | 2025-01-01 → 2025-12-31 |
| Current State and Local Tax Expense (Benefit) | 82.00M | 2025-01-01 → 2025-12-31 |
| Current Income Tax Expense (Benefit) | 473.00M | 2025-01-01 → 2025-12-31 |
| Capitalized Computer Software, Accumulated Amortization | 399.00M | as of 2025-12-31 |
| Capitalized Computer Software, Net | 692.00M | as of 2025-12-31 |
| Deferred Federal Income Tax Expense (Benefit) | -10.00M | 2025-01-01 → 2025-12-31 |
| Deferred State and Local Income Tax Expense (Benefit) | 13.00M | 2025-01-01 → 2025-12-31 |
| Capitalized Computer Software, Amortization | 93.00M | 2025-01-01 → 2025-12-31 |
| Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, before Accumulated Depreciation and Amortization | 2.16B | as of 2025-12-31 |
| Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, Accumulated Depreciation and Amortization | 1.53B | as of 2025-12-31 |
| Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, after Accumulated Depreciation and Amortization | 628.00M | as of 2025-12-31 |
| Share-based Payment Arrangement, Expense | 132.00M | 2025-01-01 → 2025-12-31 |
| Dividends, Preferred Stock | 143.00M | 2025-01-01 → 2025-12-31 |
| Debt Securities, Trading, and Equity Securities, FV-NI | 1.06B | as of 2025-12-31 |
| Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount | 484.00M | 2025-01-01 → 2025-12-31 |
| Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount | 75.00M | 2025-01-01 → 2025-12-31 |
| Share-based Payment Arrangement, Expense, Tax Benefit | 32.00M | 2025-01-01 → 2025-12-31 |
| Share-based Payment Arrangement, Exercise of Option, Tax Benefit | 1.00M | 2025-01-01 → 2025-12-31 |
| Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-based Payment Arrangement, Amount | -2.00M | 2025-01-01 → 2025-12-31 |
| Effective Income Tax Rate Reconciliation, Nondeductible Expense, Other, Amount | -3.00M | 2025-01-01 → 2025-12-31 |
| Equity Securities without Readily Determinable Fair Value, Amount | 467.00M | as of 2025-12-31 |
| Effective Income Tax Rate Reconciliation, Tax Contingency, Amount | 0 | 2025-01-01 → 2025-12-31 |
| Dividends, Common Stock, Cash | 911.00M | 2025-01-01 → 2025-12-31 |
| Accrued Liabilities and Other Liabilities | 4.29B | as of 2025-12-31 |
| Effective Income Tax Rate Reconciliation, Tax Exempt Income, Amount | 27.00M | 2025-01-01 → 2025-12-31 |
| Financing Receivable, Accrued Interest, before Allowance for Credit Loss | 459.00M | 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 |
| Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount | -2.00M | 2025-01-01 → 2025-12-31 |
| Finite-Lived Intangible Asset, Expected Amortization, Year One | 7.00M | as of 2025-12-31 |
| Finite-Lived Intangible Asset, Expected Amortization, Year Two | 1.00M | as of 2025-12-31 |
| Finite-Lived Intangible Asset, Expected Amortization, Year Three | 0 | as of 2025-12-31 |
| Finite-Lived Intangible Asset, Expected Amortization, Year Four | 0 | as of 2025-12-31 |
| Finite-Lived Intangible Asset, Expected Amortization, Year Five | 0 | as of 2025-12-31 |
| Guarantor Obligations, Maximum Exposure, Undiscounted | 21.58B | as of 2025-12-31 |
| Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, Year One | 3.07B | as of 2025-12-31 |
| Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year One Through Five | 10.80B | as of 2025-12-31 |
| Guarantor Obligations, Current Carrying Value | 161.00M | as of 2025-12-31 |
| Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10 | 21.86B | as of 2025-12-31 |
| Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 10 | 6.13B | as of 2025-12-31 |
| Derivative Asset, Fair Value, Amount Not Offset Against Collateral | 153.00M | as of 2025-12-31 |
| Treasury Stock, Value, Acquired, Cost Method | 200.00M | 2025-01-01 → 2025-12-31 |
| Derivative Liability, Not Subject to Master Netting Arrangement | 652.00M | as of 2025-12-31 |
| Derivative Asset, Notional Amount | 9.00M | as of 2025-12-31 |
| Derivative, Notional Amount | 154.87B | as of 2025-12-31 |
| Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, Year One | 3.08B | as of 2025-12-31 |
| Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year One Through Five | 10.50B | as of 2025-12-31 |
| Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10 | 20.21B | as of 2025-12-31 |
| Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 10 | 5.79B | as of 2025-12-31 |
| Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax | 267.00M | as of 2025-12-31 |
| Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax | 2.52B | as of 2025-12-31 |
| Time Deposit Maturities, Year One | 12.23B | as of 2025-12-31 |
| Time Deposit Maturities, Year Two | 410.00M | as of 2025-12-31 |
| Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Settlement | 0 | 2025-01-01 → 2025-12-31 |
| Time Deposit Maturities, Year Three | 18.00M | as of 2025-12-31 |
| Time Deposit Maturities, Year Four | 8.00M | as of 2025-12-31 |
| Time Deposit Maturities, Year Five | 5.00M | as of 2025-12-31 |
| Time Deposit Maturities, after Year Five | 10.00M | as of 2025-12-31 |
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value | 7.00M | as of 2025-12-31 |
| Financing Receivable, Allowance for Credit Loss, Recovery | 87.00M | 2025-01-01 → 2025-12-31 |
| Financing Receivable, Allowance for Credit Loss, Writeoff | 517.00M | 2025-01-01 → 2025-12-31 |
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value | 4.00M | 2025-01-01 → 2025-12-31 |
| Stock Repurchased During Period, Value | 35.00M | 2025-01-01 → 2025-12-31 |
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value | 3.00M | as of 2025-12-31 |
| Deferred Tax Assets, Tax Credit Carryforwards | 226.00M | as of 2025-12-31 |
| Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss | 330.00M | as of 2025-12-31 |
| Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain | 21.00M | as of 2025-12-31 |
| Deferred Tax Assets, Capital Loss Carryforwards | 4.00M | as of 2025-12-31 |
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value | 4.00M | as of 2025-12-31 |
| Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Employee Benefits | 212.00M | as of 2025-12-31 |
| Operating Lease, Cost | 118.00M | 2025-01-01 → 2025-12-31 |
| Goodwill, Impaired, Accumulated Impairment Loss | 0 | as of 2025-12-31 |
| Debt Securities, Held-to-Maturity, Amortized Cost, Maturity, Allocated and Single Maturity Date, Year One | 472.00M | as of 2025-12-31 |
| Variable Lease, Cost | 20.00M | 2025-01-01 → 2025-12-31 |
| Debt Securities, Held-to-Maturity, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year One Through Five | 2.23B | as of 2025-12-31 |
| Lease, Cost | 138.00M | 2025-01-01 → 2025-12-31 |
| Debt Securities, Held-to-Maturity, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10 | 4.80B | as of 2025-12-31 |
| Debt Securities, Held-to-Maturity, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 10 | 1.12B | as of 2025-12-31 |
| Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Provision for Loan Losses | 422.00M | as of 2025-12-31 |
| Right-of-Use Asset Obtained in Exchange for Operating Lease Liability | 91.00M | 2025-01-01 → 2025-12-31 |
| Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Loss Reserves | 5.00M | as of 2025-12-31 |
| Debt Securities, Held-to-Maturity, Fair Value, Maturity, Allocated and Single Maturity Date, Year One | 467.00M | as of 2025-12-31 |
| Debt Securities, Held-to-Maturity, Fair Value, Maturity, Allocated and Single Maturity Date, after Year One Through Five | 2.18B | as of 2025-12-31 |
| Debt Securities, Held-to-Maturity, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10 | 4.67B | as of 2025-12-31 |
| Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals | 79.00M | as of 2025-12-31 |
| Debt Securities, Held-to-Maturity, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 10 | 999.00M | as of 2025-12-31 |
| Deferred Tax Assets, Unrealized Losses on Trading Securities | 566.00M | as of 2025-12-31 |
| Lessee, Operating Lease, Liability, to be Paid, Year One | 127.00M | as of 2025-12-31 |
| Lessee, Operating Lease, Liability, to be Paid, Year Two | 117.00M | as of 2025-12-31 |
| Lessee, Operating Lease, Liability, to be Paid, Year Three | 95.00M | as of 2025-12-31 |
| Lessee, Operating Lease, Liability, to be Paid, Year Four | 72.00M | as of 2025-12-31 |
| Lessee, Operating Lease, Liability, to be Paid, Year Five | 49.00M | as of 2025-12-31 |
| Lessee, Operating Lease, Liability, to be Paid, after Year Five | 78.00M | as of 2025-12-31 |
| Lessee, Operating Lease, Liability, to be Paid | 538.00M | as of 2025-12-31 |
| FinancingReceivableExcludingAccruedInterestModifiedPeriod | 595.00M | 2025-01-01 → 2025-12-31 |
| Deferred Tax Assets, Other | 137.00M | as of 2025-12-31 |
| Derivative Liability, Collateral, Right to Reclaim Cash, Offset | 274.00M | as of 2025-12-31 |
| FinancingReceivableExcludingAccruedInterestModifiedPast12Months | 595.00M | as of 2025-12-31 |
| Financing Receivable, Troubled Debt Restructuring, Commitment to Lend | 110.00M | as of 2025-12-31 |
| Deferred Tax Assets, Gross | 1.86B | as of 2025-12-31 |
| Deferred Tax Assets, Valuation Allowance | 5.00M | as of 2025-12-31 |
| Derivative Asset, Collateral, Obligation to Return Cash, Offset | 297.00M | as of 2025-12-31 |
| Deferred Tax Assets, Net of Valuation Allowance | 1.85B | as of 2025-12-31 |
| Lessee, Operating Lease, Liability, Undiscounted Excess Amount | 54.00M | as of 2025-12-31 |
| Deferred Tax Liabilities, Gross | 705.00M | as of 2025-12-31 |
| Deferred Tax Assets, Net | 1.15B | as of 2025-12-31 |
| Financing Receivable, Troubled Debt Restructuring, Subsequent Default | 27.00M | 2025-01-01 → 2025-12-31 |
| Sales-type and Direct Financing Leases, Lease Receivable | 1.92B | as of 2025-12-31 |
| Deferred Tax Liabilities, Leasing Arrangements | 306.00M | as of 2025-12-31 |
| Debt and Equity Securities, Gain (Loss) | -6.00M | 2025-01-01 → 2025-12-31 |
| Operating Lease, Lease Income, Lease Payments | 43.00M | 2025-01-01 → 2025-12-31 |
| Deferred Tax Liabilities, Goodwill | 195.00M | as of 2025-12-31 |
| OCI, before Reclassifications, Net of Tax, Attributable to Parent | 1.23B | 2025-01-01 → 2025-12-31 |
| Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent | -277.00M | 2025-01-01 → 2025-12-31 |
| Deferred Tax Liabilities, Other | 67.00M | as of 2025-12-31 |
| Defined Benefit Plan, Plan with Accumulated Benefit Obligation in Excess of Plan Assets, Accumulated Benefit Obligation | 822.00M | as of 2025-12-31 |
| HedgedAssetFairValueHedgePortfolioLayerMethodCumulativeIncreaseDecreaseExcludedFromAmortizedCost | 99.00M | as of 2025-12-31 |
| Equity Securities without Readily Determinable Fair Value, Impairment Loss, Annual Amount | 0 | 2025-01-01 → 2025-12-31 |
| Lessor, Operating Lease, Assumptions and Judgments, Value of Underlying Asset, Amount | 153.00M | as of 2025-12-31 |
| Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months | -25.00M | 2025-01-01 → 2025-12-31 |
| Long-Term Debt, Maturity, Year One | 1.11B | as of 2025-12-31 |
| Defined Contribution Plan, Cost | 132.00M | 2025-01-01 → 2025-12-31 |
| Long-Term Debt, Maturity, Year Two | 2.05B | as of 2025-12-31 |
| Long-Term Debt, Maturity, Year Three | 1.21B | as of 2025-12-31 |
| Long-Term Debt, Maturity, Year Four | 1.23B | as of 2025-12-31 |
| Long-Term Debt, Maturity, Year Five | 15.00M | as of 2025-12-31 |
| Long-Term Debt, Maturity, after Year Five | 4.31B | as of 2025-12-31 |
| Off-Balance Sheet, Credit Loss, Liability | 313.00M | as of 2025-12-31 |
| Off-Balance Sheet, Credit Loss, Liability, Credit Loss Expense (Reversal) | 23.00M | 2025-01-01 → 2025-12-31 |
| Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions | 0 | 2025-01-01 → 2025-12-31 |
| Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions | 36.00M | 2025-01-01 → 2025-12-31 |
| Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities | 0 | 2025-01-01 → 2025-12-31 |
| Sales-Type and Direct Financing Leases, Lease Receivable, to be Received, Year One | 583.00M | as of 2025-12-31 |
| Sales-Type and Direct Financing Leases, Lease Receivable, to be Received, Year Two | 410.00M | as of 2025-12-31 |
| Sales-Type and Direct Financing Leases, Lease Receivable, to be Received, Year Three | 256.00M | as of 2025-12-31 |
| Sales-Type and Direct Financing Leases, Lease Receivable, to be Received, Year Four | 182.00M | as of 2025-12-31 |
| Sales-Type and Direct Financing Leases, Lease Receivable, to be Received, Year Five | 141.00M | as of 2025-12-31 |
| Sales-Type and Direct Financing Leases, Lease Receivable, to be Received, after Year Five | 344.00M | as of 2025-12-31 |
| Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received | 1.92B | as of 2025-12-31 |
| Unrecognized Tax Benefits, Interest on Income Taxes Accrued | 1.00M | as of 2025-12-31 |
| Unrecognized Tax Benefits that Would Impact Effective Tax Rate | 3.00M | as of 2025-12-31 |
| Financing Receivable, Held-for-Sale, Not Part of Disposal Group, after Valuation Allowance | 1.08B | as of 2025-12-31 |
| Lessor, Operating Lease, Payment to be Received, Year One | 27.00M | as of 2025-12-31 |
| Lessor, Operating Lease, Payment to be Received, Year Two | 19.00M | as of 2025-12-31 |
| Lessor, Operating Lease, Payment to be Received, Year Three | 10.00M | as of 2025-12-31 |
| Lessor, Operating Lease, Payment to be Received, Year Four | 5.00M | as of 2025-12-31 |
| Lessor, Operating Lease, Payment to be Received, Year Five | 4.00M | as of 2025-12-31 |
| Lessor, Operating Lease, Payment to be Received, after Year Five | 14.00M | as of 2025-12-31 |
| Lessor, Operating Lease, Payments to be Received | 79.00M | as of 2025-12-31 |
| Residual Value of Leased Asset | 269.00M | as of 2025-12-31 |
| Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Unfunded Commitments | 57.00M | as of 2025-12-31 |
| Credit Risk Derivative Liabilities, at Fair Value | 49.00M | as of 2025-12-31 |
| Credit Risk Derivatives, at Fair Value, Net | -1.00M | as of 2025-12-31 |
| Collateral Already Posted, Aggregate Fair Value | 49.00M | as of 2025-12-31 |
| Financing Receivable, Deferred Commitment Fee | 303.00M | as of 2025-12-31 |
| Mortgage Loans in Process of Foreclosure, Amount | 70.00M | as of 2025-12-31 |
| Derivative Liability, Fair Value, Gross Liability | 927.00M | as of 2025-12-31 |
| Derivative Asset, Fair Value, Gross Asset | 472.00M | as of 2025-12-31 |