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Securities Received as Collateral that Have Been Resold or Repledged Adjusting rate interest rate period Mortgage Loans On Real Estate, Adjusting Rate Interest Rate Period Mortgage Loans On Real Estate, Adjusting Rate Interest Rate Period Entity Common Stock, Shares Outstanding (in shares) Entity Common Stock, Shares Outstanding Asset-backed securities Asset-Backed Securities [Member] Minimum Capital Requirement Ratio Banking Regulation, Total Risk-Based Capital Ratio, Capital Adequacy, Minimum Payables to brokers, dealers, and clearing organizations Broker-Dealer, Payable To Other Broker-Dealer And Clearing Organization, Fair Value Disclosure Broker-Dealer, Payable To Other Broker-Dealer And Clearing Organization, Fair Value Disclosure Depository Shares Depository Shares [Member] Depository Shares Bank Deposits Deposit Liabilities Disclosures [Text Block] Other payables to broker-dealers Other Payable to Broker-Dealer and Clearing Organization Total loans Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Fee, and Loan in Process Regulatory Capital and Ratios Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table Text Block] Actual Amount Banking Regulation, Tier 1 Risk-Based Capital, Actual Consolidated Entities [Domain] Consolidated Entities [Domain] 2.300% due May 13, 2031 Senior Notes Due May 2031 [Member] Senior Notes Due May 2031 pre-2022 Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year, Writeoff Minimum Capital Requirement Amount Supplementary Leverage Ratio, Capital Required For Capital Adequacy Supplementary Leverage Ratio, Capital Required For Capital Adequacy Total Unrealized Losses Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss pre-2022 Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year Common stock, par value (in USD per share) Common Stock, Par or Stated Value Per Share Acquired intangible assets — net Intangible Asset, Excluding Goodwill, after Accumulated Amortization Gross charge-offs Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract] Counterparty Offsetting Security Loaned, Subject to Master Netting Arrangement, Collateral, Right to Reclaim Security Not Offset Premium amortization, net, on available for sale and held to maturity securities Accretion (Amortization) of Discounts and Premiums, Investments 0.900% due March 11, 2026 Senior Notes Due March 2026 [Member] Senior Notes Due March 2026 Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount London Interbank Offered Rate (LIBOR) London Interbank Offered Rate (LIBOR) 1 [Member] London Interbank Offered Rate Number of reportable segments Number of Reportable Segments Net Amount Derivative Asset, Security Purchased under Agreement to Resell, and Security Borrowed, Including Not Subject to Master Netting Arrangement, after Offset and Deduction Cumulative fair value hedging adjustment included in the carrying value of hedged liabilities Hedged Liability, Fair Value Hedge, Cumulative Increase (Decrease), Excluding Discontinued Hedges Hedged Liability, Fair Value Hedge, Cumulative Increase (Decrease), Excluding Discontinued Hedges Total Gross Assets Derivative Asset, Security Purchased under Agreement to Resell, and Security Borrowed, Subject to Master Netting Arrangement, before Offset Short-Term Debt, Type [Domain] Short-Term Debt, Type [Domain] Estimated loss to be reclassified from AOCI Cash Flow Hedge Gain (Loss) to be Reclassified within 12 Months Securities Sold under Agreements to Repurchase Securities Sold under Agreements to Repurchase [Member] Entity Address, City or Town Entity Address, City or Town Net Amounts Presented in the Condensed Consolidated Balance Sheets Derivative Liability, Securities Sold under Agreements to Repurchase, Securities Loaned 3.300% due April 1, 2027 Senior Notes Due April, 2027 [Member] Senior Notes Due 2027 [Member] Pledged asset lines Pledged asset lines Pledged Asset Lines Portfolio Segment [Member] Pledged Asset Lines Portfolio Segment Total 2026 Advance From Federal Home Loan Bank And Other Short-Term Borrowings, Maturity, Remainder Of Fiscal Year Advance From Federal Home Loan Bank And Other Short-Term Borrowings, Maturity, Remainder Of Fiscal Year Class of Financing Receivable [Domain] Class of Financing Receivable [Domain] Receivables [Abstract] Receivables [Abstract] Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] 2026 Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year, Writeoff Gross Liabilities Other Short-Term Borrowings, Subject To Master Netting Arrangement, Before Offset Other Short-Term Borrowings, Subject To Master Netting Arrangement, Before Offset Origination 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due and other
nonaccrual loans Financial Asset, Equal to or Greater than 90 Days Past Due [Member] Other Other Expenses Actual Ratio Banking Regulation, Supplementary Leverage Ratio, Actual AFS investment securities portfolio, exclusive of derivatives Debt Securities, Available-For-Sale, Period Of Expected Future Payments Debt Securities, Available-For-Sale, Period Of Expected Future Payments Concentration Risk Type [Axis] Concentration Risk Type [Axis] Counterparty Offsetting Derivative Asset, Subject to Master Netting Arrangement, Collateral, Obligation to Return Security Not Offset Schedule of Long-term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] Fair value of pledged securities Securities Held as Collateral, at Fair Value TD Group US Holdings LLC [Member] TD Group US Holdings LLC [Member] TD Group US Holdings LLC Nonvoting common stock Nonvoting Common Stock [Member] Gain (loss) recognized in other comprehensive income OCI, before Reclassifications, before Tax, Attributable to Parent Collateral value of pledged securities Securities Held as Collateral, at Collateral Value Securities Held as Collateral, at Collateral Value Securities borrowed Deposits Paid for Securities Borrowed, at Carrying Value Financial Information for Reportable Segments Segment Reporting [Table Text Block] Financial Asset Originated Financial Asset Originated [Member] Other comprehensive income (loss), before tax: Other Comprehensive Income (Loss), before Tax [Abstract] Banking Regulation, Regulatory Capital Requirement, Compliance [Table] Banking Regulation, Regulatory Capital Requirement, Compliance [Table] Other comprehensive income (loss), net of tax Other comprehensive income (loss), net of tax Other net changes Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Interest-only reset period Mortgage Loans On Real Estate, Interest-Only Reset Period Mortgage Loans On Real Estate, Interest-Only Reset Period Common stock repurchased during the period but settled after period end Noncash Transaction, Common Stock Repurchased Noncash Transaction, Common Stock Repurchased Equity, corporate debt, and other securities Equity, Corporate Debt And Other Securities [Member] Equity, Corporate Debt And Other Securities [Member] 2026 Financing Receivable, Ratio Of Nonperforming Loans To All Loans, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year Financing Receivable, Ratio Of Nonperforming Loans To All Loans, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year Allowance for credit losses Beginning balance Ending balance Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest After 1 year through 5 years Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year One Through Five Document Period End Date Document Period End Date Writedown to fair value Debt Securities, Available-for-Sale, Excluding Accrued Interest, Write-down To Fair Value Debt Securities, Available-for-Sale, Excluding Accrued Interest, Write-down To Fair Value Shares outstanding (in shares) Preferred Stock, Shares Outstanding Interest rate swaps Derivative Liability, Subject to Master Netting Arrangement, after Offset and Deduction [Abstract] 2.750% due October 1, 2029 Senior Notes Due October, 2029 [Member] Senior Notes Due October, 2029 Series L Series L Preferred Stock [Member] Series L Preferred Stock Gross Amounts Offset in the Condensed Consolidated Balance Sheets Security Purchased under Agreement to Resell, Subject to Master Netting Arrangement, Liability Offset HELOCs converted to term loans Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan Maturity term Debt Instrument, Term Gross realized losses Debt Securities, Available-for-Sale, Realized Loss Converting to amortizing loans period Financing Receivable, Convert To Amortizing Loans, Period Financing Receivable, Convert To Amortizing Loans, Period Treasury stock, at cost — 346,069,683 and 315,863,800 shares at June 30, 2026 and December 31, 2025, respectively Treasury Stock, Common, Value New Share Repurchase Authorization New Share Repurchase Authorization [Member] New Share Repurchase Authorization Net unrealized gain (loss), tax expense (benefit) OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, Tax After 10 years Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 10 Net Amounts Presented in the Condensed Consolidated Balance Sheets Securities Sold under Agreements to Repurchase Income tax effect Tax expense (benefit) Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Entity Shell Company Entity Shell Company Consolidation Items [Domain] Consolidation Items [Domain] Investments in Affordable Housing Projects [Domain] Investments in Affordable Housing Projects [Domain] Investments in Affordable Housing Projects [Domain] Cash and Investments Segregated and on Deposit for Regulatory Purposes Cash And Investments Segregated And On Deposit For Regulatory Purposes [Member] Cash And Investments Segregated And On Deposit For Regulatory Purposes Earnings Per Common Share Earnings Per Share [Text Block] Earnings Per Common Shares Outstanding Earnings Per Share [Abstract] 5.493% due May 21, 2037 Fixed-To-Floating Rate Senior Notes Due May 2037 [Member] Fixed-To-Floating Rate Senior Notes Due May 2037 Document Fiscal Period Focus Document Fiscal Period Focus Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Total liabilities Aggregate liabilities Liabilities Trading Symbol Trading Symbol Available for sale securities (amortized cost of $66,312 and $66,225 at June 30, 2026 and December 31, 2025, respectively; including assets pledged of $760 and $281, respectively) Available for sale securities, assets pledged Fair Value Total Debt Securities, Available-for-Sale, Excluding Accrued Interest Purchases of equipment, office facilities, and property Payments to Acquire Property, Plant, and Equipment Financing Receivable, Allowance for Credit Loss [Line Items] Financing Receivable, Allowance for Credit Loss [Line Items] Proceeds from FHLB borrowings Proceeds from FHLBank Borrowings, Financing Activities Fair Value of Assets Acquired and Liabilities Assumed Business Combination, Recognized Asset Acquired and Liability Assumed [Table Text Block] Company Selected Measure Name Company Selected Measure Name Sale of Stock [Domain] Sale of Stock [Domain] Unallocated portfolio layer method (PLM) fair value basis adjustments, Amortized Cost Unallocated portfolio layer method fair value basis adjustments Unallocated portfolio layer method fair value basis adjustments, (reduction) increase Hedged Asset, Fair Value Hedge, Portfolio Layer Method, Hedged Layer, Fair Value, Cumulative Increase (Decrease) Purchases of available for sale securities Payments to Acquire Debt Securities, Available-for-Sale Ownership interest in shares redeemed Redemption Of Stock, Percentage Of Ownership Before Transaction Redemption Of Stock, Percentage Of Ownership Before Transaction Realized (gain) loss reclassified from AOCI to interest revenue Reclassification from AOCI, Current Period, before Tax, Attributable to Parent Bank deposits Interest Expense, Deposits Other short-term borrowings, 2026 Other Short-Term Borrowings, Maturity, Remainder Of Fiscal Year Other Short-Term Borrowings, Maturity, Remainder Of Fiscal Year Accrued expenses and other liabilities Business Combination, Recognized Liability Assumed, Accrued Expenses And Other Liabilities Business Combination, Recognized Liability Assumed, Accrued Expenses And Other Liabilities After 1 year through 5 years Debt Securities, Held-to-Maturity, Fair Value, Maturity, Allocated and Single Maturity Date, after Year One Through Five Receivables from brokerage clients — net Receivables from Customers, Fair Value Disclosure Receivables from Customers, Fair Value Disclosure 2026 Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year Credit Facility [Domain] Credit Facility [Domain] Ameritrade Holding Fixed-Rate Senior Notes Ameritrade Holding Fixed-Rate Senior Notes [Member] Ameritrade Holding Fixed-Rate Senior Notes Cash Flows from Operating Activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] 4.603% due July 27, 2029 Fixed-To-Floating Rate Senior Notes Due July, 2029 [Member] Fixed-To-Floating Rate Senior Notes Due July, 2029 Receivables from clearing organizations Receivables from Clearing Organizations CSC Senior Notes CSC Senior Notes [Member] CSC Senior Notes Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] 4.625% due March 22, 2030 Senior Notes Due March 2030 [Member] Senior Notes Due 2030 [Member] Fair value of net identifiable assets acquired Less: Fair value of net identifiable assets acquired Business Combination, Recognized Asset Acquired to Liability Assumed, Excess (Less) Line of Credit Facility [Table] Line of Credit Facility [Table] Actual Amount Banking Regulation, Tier 1 Leverage Capital, Actual Deemed dividend Dividends Other interest expense Other Interest Expense, Including Capitalized Interest Other Interest Expense, Including Capitalized Interest Interest income, receipts Interest Income, Fair Value Hedge Derivative Instrument, Increase (Decrease) Interest Income, Fair Value Hedge Derivative Instrument, Increase (Decrease) Commissions Commissions [Member] Commissions [Member] U.S. Treasury securities US Treasury Securities [Member] Entities [Table] Entities [Table] CSC Charles Schwab Corporation [Member] Charles Schwab Corporation [Member] Receivables from and Payables to Brokers, Dealers, and Clearing Organizations Due to and from Broker-Dealers and Clearing Organizations Disclosure [Text Block] Total borrowing capacity Line of Credit Facility, Current Borrowing Capacity Net Amount Derivative Liability, Security Sold under Agreement to Repurchase, and Security Loaned, Including Not Subject to Master Netting Arrangement, after Offset and Deduction Non-agency commercial mortgage-backed securities Commercial Mortage Backed Securities Issued By Private Enterprises [Member] Commercial Mortage Backed Securities Issued by Private Enterprises [Member] Amounts included in the measurement of lease liabilities Operating Lease, Payments Award Timing Predetermined Award Timing Predetermined [Flag] Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Share-based compensation APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Level 1 Fair Value, Inputs, Level 1 [Member] Fair Value of Other Financial Instruments Schedule Of Fair Value Assets And Liabilities For Financial Instruments Not Recorded At Fair Value Table [Table Text Block] Tabular disclosure of assets and liabilities by class that are not recorded at fair value. The disclosures that may be required or desired include: (a) the carrying value and (b) the level within the fair value hierarchy in which the carrying value falls, segregating fair value measurements using quoted prices in active markets for identical assets or liabilities (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). Where the quoted price in an active market for the identical liability is not available, the Level 1 input is the quoted price of an identical liability when traded as an asset. 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Hedging Relationship [Axis] Hedging Relationship [Axis] Consolidated Common Stock Common Stock And Nonvoting Common Stock [Member] Common Stock And Nonvoting Common Stock Gross Unrealized Gains Debt Securities, Held-to-Maturity, Accumulated Unrecognized Gain Restricted cash and cash equivalents amounts included in cash and investments segregated and on deposit for regulatory purposes Restricted Cash and Cash Equivalent Cash equivalents: Cash and cash equivalents Cash and Cash Equivalents, Fair Value Disclosure Net Amount Derivative Asset, Subject to Master Netting Arrangement, after Offset and Deduction Available for sale securities, amortized cost Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Amortized Cost [Abstract] Client relationships Client Relationships [Member] Client Relationships Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Uncommitted Lines Of Credit With External Banks Uncommitted Lines Of Credit With External Banks [Member] Uncommitted Lines Of Credit With External Banks Total Advance From Federal Home Loan Bank And Other Short-Term Borrowings, Maturity [Abstract] Advance From Federal Home Loan Bank And Other Short-Term Borrowings, Maturity Total interest-bearing deposits Interest-Bearing Deposit Liabilities Antidilutive Security, Excluded EPS Calculation [Table] Antidilutive Security, Excluded EPS Calculation [Table] Updated FICO Score 740 and Above Updated FICO Score 740 And Above [Member] Weighted Average Updated FICO Score Seven Hundred Forty And Above [Member] Bank deposits Deposits, Fair Value Disclosure Cash Flows from Investing Activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] Receivables from brokers, dealers, and clearing organizations Receivables From Broker-Dealer And Clearing Organization, Fair Value Disclosure Receivables From Broker-Dealer And Clearing Organization, Fair Value Disclosure Segment [Domain] Segments [Domain] Interest rate swaps Interest Rate Swap [Member] Converted to amortizing loans during the period Financing Receivable, Convert To Amortizing Loans During Period Financing Receivable, Convert To Amortizing Loans During Period Borrowings Debt Disclosure [Text Block] Scenario [Axis] Scenario [Axis] Debt issuance costs Debt issuance costs Debt Issuance Costs, Net Business Combination [Table] Business Combination [Table] PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Secured Credit Facility Secured Debt [Member] Updated FICO Score Below 620 Updated FICO Score Below 620 [Member] Weighted Average Updated FICO Score Below Six Hundred Twenty [Member] Business Combination, Asset Acquisition, Transaction between Entities under Common Control, and Joint Venture Formation [Abstract] Ownership interest in shares (percent) Sale of Stock, Percentage of Ownership before Transaction Fixed interest rate (percent) Debt Instrument, Interest Rate, Stated Percentage Dividends declared on common stock Dividends, Common Stock, Cash Total stockholders’ equity Balance at beginning of period Balance at end of period Equity, Attributable to Parent Total Gross Liabilities Derivative Liability, Security Sold under Agreement to Repurchase, and Security Loaned, Subject to Master Netting Arrangement, before Offset Data and trade names Data And Trade Names [Member] Data And Trade Names Minimum Capital Requirement Amount Banking Regulation, Total Risk-Based Capital, Capital Adequacy, Minimum Offsetting Assets [Line Items] Offsetting Assets [Line Items] Assets Assets [Abstract] Receivables from brokers, dealers, and clearing organizations Receivables from brokers, dealers, and clearing organizations Receivable from Broker-Dealer and Clearing Organization Regulatory fees and assessments Regulatory Fees And Assessments Regulatory Fees And Assessments Credit Quality Indicators of First Mortgages and HELOCs Financing Receivable Credit Quality Indicators [Table Text Block] Professional services Professional Fees Insider Trading Policies and Procedures [Line Items] Reduction to initial estimate of goodwill Goodwill, Measurement Period Adjustment Gross Assets Security Purchased under Agreement to Resell, Subject to Master Netting Arrangement, before Offset Cash and investments segregated and on deposit for regulatory purposes (including resale agreements of $12,636 and $16,901 at June 30, 2026 and December 31, 2025, respectively) Cash and Securities Segregated under Federal and Other Regulations Provision (benefit) for deferred income taxes Deferred Income Tax Expense (Benefit) Counterparty Offsetting Derivative Asset, Security Purchased under Agreement to Resell, and Security Borrowed, Subject to Master Netting Arrangement, Collateral, Obligation to Return Security Not Offset Total other securities owned Other Securities [Member] Other Securities [Member] Financing Receivable Portfolio Segment [Domain] Financing Receivable Portfolio Segment [Domain] Charles Schwab Trust Bank Charles Schwab Trust Bank [Member] Trust Bank [Member] Collateral Derivative Liability, Security Sold under Agreement to Repurchase, and Security Loaned, Subject to Master Netting Arrangement, Collateral, Right to Reclaim Cash Not Offset > 1 year – 3 years Financing Receivable, Revolving, Converted To Term Loan, Year One To Year Three Financing Receivable, Revolving, Converted To Term Loan, Year One To Year Three Antidilutive stock options and restricted stock awards excluded from the calculation of diluted EPS (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Maturity 35 to 95 Days Maturity 35 to 95 Days [Member] Maturity 35 to 95 Days Entity Central Index Key Entity Central Index Key Equity [Abstract] Equity [Abstract] Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year [Member] 2026 Long-Term Debt, Maturity, Remainder of Fiscal Year Other Stockholders' Equity, Other Pledging Purpose [Axis] Pledging Purpose [Axis] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Dividends declared on preferred stock Dividends declared Dividends, Preferred Stock, Cash Fixed rate (percent) Dividend rate in effect Preferred Stock, Dividend Rate, Percentage Series G Series G Preferred Stock [Member] Designated as Hedging Instrument Designated as Hedging Instrument [Member] 2.450% due March 3, 2027 Senior Notes Due March 3, 2027 [Member] Senior Notes Due March 3, 2027 Payables to brokerage clients Broker-Dealer, Payable to Customer Basis spread (percent) Debt Instrument, Basis Spread on Variable Rate Variable Rate [Domain] Variable Rate [Domain] Accumulated Other Comprehensive Income (Loss) AOCI Attributable to Parent [Member] Minimum to be Well Capitalized Ratio Banking Regulation, Total 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Fair value of replacement awards transferred Business Combination, Consideration Transferred, Equity Interest Statement [Line Items] Statement [Line Items] Total assets Aggregate assets Total assets Assets Interest expense Interest expense Interest Expense, Operating Reduction of derivative liability related to variation margin settlements Variation Margin Settlement, Derivative Liabilities Variation Margin Settlement, Derivative Liabilities Floating-rate obligation IDA balance Insured Deposit Account Agreement, Floating Rate, Balance Insured Deposit Account Agreement, Floating Rate, Balance Variable Interest Entity, Not Primary Beneficiary Variable Interest Entity, Not Primary Beneficiary [Member] Percent of loans with interest-only payments Mortgage Loans On Real Estate, Percent Of Loans With Interest-Only Payments Mortgage Loans On Real Estate, Percent Of Loans With Interest-Only Payments Cumulative fair value hedging adjustments related to long term debt which hedge accounting has 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Table [Member] Fair Value Measurement [Domain] Fair Value Measurement [Domain] Recoveries Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Recovery Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Corporate Debt Securities Issued By Information Technology Industry Corporate Debt Securities Issued By Institutions In Information Technology Industry [Member] Corporate Debt Securities Issued By Institutions In Information Technology Industry Cover [Abstract] Cover [Abstract] Charles Schwab Premier Bank, SSB Charles Schwab Premier Bank, SSB [Member] Charles Schwab Premier Bank [Member] Issuances of long-term debt Proceeds from Issuance of Other Long-Term Debt Advisor Services Advisor Services [Member] Advisor Services [Member] Weighted-average interest rate of short-term borrowings Short-Term Debt, Weighted Average Interest Rate, at Point in Time 2025 Financing Receivable, Excluding 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Stock, Series D Series D Series D Preferred Stock [Member] 5.643% due May 19, 2029 Fixed-To-Floating Rate Senior Notes Due May 2029 [Member] Fixed-To-Floating Rate Senior Notes Due May 2029 Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] Other finance liabilities Other Long-Term Debt Other Other Debt Obligations [Member] Cumulative fair value hedging adjustment included in the amortized cost of hedged assets Hedged Asset, Fair Value Hedge, Cumulative Increase (Decrease) Resale and Repurchase Agreements Resale And Repurchase Agreements [Member] Resale And Repurchase Agreements [Member] Held to maturity securities, assets pledged that may be sold, repledged, or utilized Debt Securities, Held-to-Maturity, Excluding Accrued Interest, after Allowance for Credit Loss, Amount Eligible For Sale And Utilization Debt Securities, Held-to-Maturity, Excluding Accrued 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Resale agreements Net Amounts Presented in the Condensed Consolidated Balance Sheets Securities Purchased under Agreements to Resell Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Consideration transferred Business Combination, Consideration Transferred Tax credits and other tax benefits Investment Program, Proportional Amortization Method, Elected, Income Tax Credit and Other Income Tax Benefit, before Amortization Expense Entity Filer Category Entity Filer Category Total Fair Value Debt Securities, Available-for-Sale, Unrealized Loss Position Counterparty Offsetting Security Borrowed, Subject to Master Netting Arrangement, Collateral, Obligation to Return Security Not Offset Federal Family Education Loan Program (FFELP) Guaranteed Loans Federal Family Education Loan Program (FFELP) Guaranteed Loans [Member] Unallocated portfolio layer method fair value basis adjustments, gross unrealized losses Hedged Asset, Fair Value Hedge, Portfolio Layer Method, Hedged Layer, Accumulated Gross Unrealized Loss, Before Tax, Cumulative Increase (Decrease) Hedged Asset, Fair Value Hedge, Portfolio Layer Method, Hedged Layer, Accumulated Gross Unrealized Loss, Before Tax, Cumulative Increase (Decrease) Subsidiary or Equity Method Investee, Sale of Stock [Table] Subsidiary or Equity Method Investee, Sale of Stock [Table] Trading revenue Trading Revenue Service [Member] Trading Revenue Service [Member] Schedule of New Accounting Pronouncements Schedule Of New Accounting Pronouncements [Table Text Block] Schedule Of New Accounting Pronouncements FHLB borrowings, 2027 Federal Home Loan Bank, Advance, Maturity, Year One Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Financial Asset, Period Past Due [Axis] Financial Asset, Aging [Axis] Investments, Debt and Equity Securities [Abstract] Investments, Debt and Equity Securities [Abstract] Gross Amounts Offset in the Condensed Consolidated Balance Sheets Security Sold under Agreement to Repurchase, Subject to Master Netting Arrangement, Asset Offset Stock, Class of Stock [Table] Stock, Class of Stock [Table] Net Amounts Presented in the Condensed Consolidated Balance Sheets Derivative Liability Senior Notes Senior Notes [Member] Entity Address, Address Line One Entity Address, Address Line One Leased assets obtained in exchange for new operating lease liabilities Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Series H Series H Preferred Stock [Member] Held to maturity securities, fair value Debt Securities, Held-to-Maturity, Maturity, Allocated and Single Maturity Date, Fair Value [Abstract] Taxes on income Income Tax Expense (Benefit) Fair Value Hedging Fair Value Hedging [Member] Asset management and administration fees Asset management and administration fees Asset Management And Administration Service [Member] Asset Management And Administration Service [Member] Liabilities Offsetting Derivative Liabilities [Abstract] Charge-offs Total loans Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff Securities lending to other broker-dealers Securities Lending To Other Broker-Dealers [Member] Securities Lending to Other Broker-Dealers [Member] Converting to Amortizing Loans Schedule Of Financing Receivable, Convert To Amortizing Loans [Table Text Block] Schedule of Financing Receivable, Convert to Amortizing Loans [Table Text Block] New Accounting Standards Accounting Standards Update and Change in Accounting Principle [Text Block] AOCI Attributable to Parent, Net of Tax [Roll Forward] AOCI Attributable to Parent, Net of Tax [Roll Forward] Statement [Table] Statement [Table] Accrued interest receivable Debt Securities, Available-For-Sale And Held-To-Maturity, Accrued Interest, After Allowance For Credit Loss Debt Securities, Available-For-Sale And Held-To-Maturity, Accrued Interest, After Allowance For Credit Loss Remaining contractual maturities on securities loaned Securities Loaned, Remaining Contractual Maturity, Term Securities Loaned, Remaining Contractual Maturity, Term Minimum to be Well Capitalized Ratio Banking Regulation, Tier 1 Risk-Based Capital Ratio, Well Capitalized, Minimum Proceeds from stock options exercised Proceeds from Stock Options Exercised 2025 Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year Order flow revenue Order Flow Revenue [Member] Order Flow Revenue [Member] Collateral Security Borrowed, Subject to Master Netting Arrangement, Collateral, Obligation to Return Cash Not Offset Derivative Instruments and Hedging Activities Disclosures [Line Items] Derivative Instruments and Hedging Activities Disclosures [Line Items] Assets Gross Assets Derivative Asset, Subject to Master Netting Arrangement, before Offset Cash and Cash Equivalents [Axis] Cash and Cash Equivalents [Axis] Derivative Instruments and Hedging Activities Disclosure [Abstract]