Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Non-investment grade Internal Noninvestment Grade [Member] Trading Arrangement: Trading Arrangement [Axis] Maximum Maximum [Member] Portion at Fair Value Measurement Portion at Fair Value Measurement [Member] Breakdown of Intangible Assets by Business Schedule Of Intangible Assets By Segment Table [Table Text Block] Schedule of Intangible Assets by Segment Other Other States, Not Separately Disclosed [Member] Other States, Not Separately Disclosed [Member] Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Line Items] Deferred Costs Capitalized Prepaid And Other Assets Disclosure [Line Items] Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Line Items] Title of 12(b) Security Title of 12(b) Security Carrying amount Reported Value Measurement [Member] Total investment securities Securities Debt Securities, Available-for-Sale and Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss Fair value, Total Debt Securities, Available-for-Sale and Held-to-Maturity, Fair Value Derivative Instruments, Gain (Loss) [Table] Derivative Instruments, Gain (Loss) [Table] Assets Measured at Fair Value on Nonrecurring Basis Fair Value Measurements, Nonrecurring [Table Text Block] VME classification of carrying amount, assets Voting Model Entity, Classification of Carrying Amount, Assets Balance sheet classification of the voting model entity's assets included in the statement of financial position of the reporting entity. This element is applicable for voting interests whether the reporting entity has a controlling financial interest (primary beneficiary) or not. Adjustment to Compensation, Amount Adjustment to Compensation Amount Pledged Status [Axis] Pledged Status [Axis] Financial Instrument [Axis] Financial Instrument [Axis] Financial Instrument [Axis] Other assets Other financial assets Other Assets, Fair Value Disclosure Segment Reporting [Abstract] Segment Reporting [Abstract] Estimated Annual Amortization Expense Intangible Asset, Finite-Lived, and Capitalized Cost, Software to be Sold, Leased, or Marketed, Estimated Amortization Expense [Table Text Block] Commitments and Contingencies Disclosure [Table] Commitments And Contingencies Disclosure [Table] Commitments and Contingencies Disclosure [Table] Employee benefit plans Retirement Benefits [Text Block] Unsettled repurchase and reverse repurchase agreements Guarantor Obligations, Maximum Exposure, Undiscounted Available-for-sale: Debt Securities, Available-for-Sale, Fair Value to Amortized Cost, after Allowance for Credit Loss [Abstract] Contract with customer, asset Contract with Customer, Asset, after Allowance for Credit Loss Derivative Instrument [Axis] Derivative Instrument [Axis] Other comprehensive income (loss), Tax (expense) benefit Other Comprehensive Income (Loss) before Reclassifications, Tax A- Standard & Poor's, A- Rating [Member] Measurement Frequency [Axis] Measurement Frequency [Axis] Accrued interest receivable Financing Receivable, Accrued Interest, before Allowance for Credit Loss Dispositions Goodwill, Divestiture Consolidated Entities [Axis] Consolidated Entities [Axis] Equity securities without readily determinable fair value, downward price adjustment, annual amount Equity Securities without Readily Determinable Fair Value, Downward Price Adjustment, Annual Amount Market value of securities received as collateral that have been sold or repledged Fair Value of Securities Received as Collateral that Have Been Resold or Repledged Entity Common Stock, Shares Outstanding (shares) Entity Common Stock, Shares Outstanding Margin loans Margin Loan [Member] Margin Loan Other comprehensive income (loss), net of tax: After-tax amount Other Comprehensive Income (Loss), Net of Tax [Abstract] Number of claims dismissed (claim) Loss Contingency, Claims Dismissed, Number Consolidated Entities [Domain] Consolidated Entities [Domain] Total, Unrealized losses Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss [Abstract] Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss [Abstract] Originated, at amortized cost, more than five years before current fiscal year Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year Common stock, par value (usd per share) Common Stock, Par or Stated Value Per Share Intangible assets Beginning balance Ending balance Net carrying amount Intangible Asset, Excluding Goodwill, after Accumulated Amortization Retirement Benefits [Abstract] Retirement Benefits [Abstract] Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Ratings (percent) Debt Securities, Held-to-maturity, Credit Quality Indicator, Percent Debt Securities, Held-to-maturity, Credit Quality Indicator, Percent Number of reportable segments Number of Reportable Segments Total, Gross assets recognized Derivative Asset, Security Purchased under Agreement to Resell, and Security Borrowed, Subject to Master Netting Arrangement, before Offset Customer relationships Customer Relationships [Member] Fair value, investments, entities that calculate net asset value per share, liquidating investment, remaining period Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Liquidating Investment, Remaining Period Allocated goodwill Goodwill, Fair Value Disclosure Investments, Unrealized Loss Position [Line Items] Investments Unrealized Loss Position [Line Items] Investments, Unrealized Loss Position [Line Items] Netherlands NETHERLANDS Allowance for loan losses Financing Receivable, Allowance for Credit Loss, Individually Evaluated Concentration Risk [Table] Concentration Risk [Table] Loss to be reclassified in next 12 months from AOCI to earnings Cash Flow Hedge Gain (Loss) to be Reclassified within 12 Months Entity Address, City or Town Entity Address, City or Town Total, Net liabilities recognized on the balance sheet Derivative Liability, Securities Sold under Agreements to Repurchase, Securities Loaned Fair value measurement Fair Value Measurement Inputs [Text Block] This element represents the disclosure related to the fair value measurement of assets and liabilities which includes financial instruments measured at fair value that are classified as stockholders' equity. Federal Home Loan Bank stock, at cost Federal Home Loan Bank Stock Securities lending indemnifications, joint venture Securities Lending Indemnifications Joint Venture This item represents securities lending indemnifications - joint venture Preferred stock, percentage ownership by subsidiary Preferred Stock, Ownership Percentage, Subsidiary Preferred Stock, Ownership Percentage, Subsidiary Class of Financing Receivable [Domain] Class of Financing Receivable [Domain] Receivables [Abstract] Receivables [Abstract] Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] VME classification of carrying amounts, liabilities Voting Model Entity, Classification Of Carrying Amount, Liabilities Balance sheet classification of the voting model entity's liabilities included in the statement of financial position of the reporting entity. This element is applicable for voting interest interests whether the reporting entity has a controlling financial interest (primary beneficiary) or not. Foreign Foreign Plan [Member] Pledged Assets [Table] Pledged Assets [Table] Pledged Assets [Table] Total borrowings Secured Borrowings, Gross Including Not Subject to Master Netting Arrangement Baa2 Moody's, Baa2 Rating [Member] Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Level 2 Fair Value, Inputs, Level 2 [Member] Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] Total other comprehensive income (loss), net of tax Other comprehensive income (loss) Net change Other Comprehensive Income (Loss), Net of Tax Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Equal to Greater than 90 Days Past Due Financial Asset, Equal to or Greater than 90 Days Past Due [Member] Revenue Benchmark Revenue Benchmark [Member] Pledged Assets [Line Items] Pledged Assets [Line Items] Pledged Assets [Line Items] Foreign exchange adjustment Accumulated Defined Benefit Plans Adjustment, Foreign Exchange Adjustment Including Portion Attributable To Noncontrolling Interest [Member] Accumulated Defined Benefit Plans Adjustment, Foreign Exchange Adjustment Including Portion Attributable To Noncontrolling Interest Domestic UNITED STATES Other Other Corporate Investments [Member] Other Corporate Investments [Member] Concentration Risk Type [Axis] Concentration Risk Type [Axis] Net unrealized gain (loss) on cash flow hedges Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax Capitalized Contract Cost [Domain] Capitalized Contract Cost [Domain] State Court State Court [Member] State Court Schedule of Investment Income, Reported Amounts, by Category [Table] Investment Income [Table] Unfunded commitments Unfunded Commitments Credit commitments to extend credit to a counterparty under certain terms and conditions. Contribution of Segments to Overall Profitability Segment Reporting [Table Text Block] Pre-tax amount Other Comprehensive Income (Loss), before Tax [Abstract] Fair value of collateral Securities Loaned, Fair Value of Collateral Use of estimates Use of Estimates, Policy [Policy Text Block] Equity securities without readily determinable fair value, upward price adjustment, cumulative amount Equity Securities without Readily Determinable Fair Value, Upward Price Adjustment, Cumulative Amount Other comprehensive income (loss) Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Unrealized gain (loss) on cash flow hedges Accumulated Gain (Loss), Cash Flow Hedge, Including Noncontrolling Interest [Member] 1-5 years Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year One Through Five Allowance for credit losses Allowance for loan losses Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest Document Period End Date Document Period End Date Domestic Domestic [Member] Domestic Total shares issued and outstanding (shares) Preferred Stock, Shares Outstanding Reverse repurchase agreements, Gross amounts offset in the balance sheet Security Purchased under Agreement to Resell, Subject to Master Netting Arrangement, Liability Offset Converted to term loans – Amortized cost Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan Realized gross losses Debt Securities, Available-for-Sale, Realized Loss Breakdown of Intangible Assets by Type Schedule Of Intangible Assets By Major Class [Table Text Block] Schedule of Intangible Assets by Major Class Unsettled Reverse Repurchase Agreements Unsettled Reverse Repurchase Agreements [Member] Unsettled Reverse Repurchase Agreements [Member] Within 1 year Debt Securities, Available-for-Sale, Weighted Average Yield, Maturity, Year One Repurchase agreements, Net liabilities recognized on the balance sheet Securities Sold under Agreements to Repurchase Change in trading assets and liabilities Increase (Decrease) in Debt Securities, Trading, and Equity Securities, FV-NI Supplemental information to the Consolidated Statement of Cash Flows Cash Flow, Supplemental Disclosures [Text Block] Schedule of Intangible Assets by Major Class [Table] Schedule Of Intangible Assets By Major Class [Table] Schedule of Intangible Assets by Major Class [Table] Accumulated other comprehensive loss, net of tax Accumulated Other Comprehensive Income (Loss), Net of Tax Entity Shell Company Entity Shell Company Consolidation Items [Domain] Consolidation Items [Domain] Singapore SINGAPORE Defined benefit plans Accumulated Defined Benefit Plans Adjustment Including Portion Attributable to Noncontrolling Interest [Member] Amortized cost, before Portfolio level basis adjustment Debt Securities, Available-For-Sale, Amortized Cost, Excluding Accrued Interest And Portfolio Level Basis Adjustments Debt Securities, Available-For-Sale, Amortized Cost, Excluding Accrued Interest And Portfolio Level Basis Adjustments Earnings per share applicable to common shareholders: Earnings Per Share [Abstract] Document Fiscal Period Focus Document Fiscal Period Focus Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Total liabilities Other liabilities Liabilities Trading assets Trading assets Debt Securities, Trading, and Equity Securities, FV-NI Trading Symbol Trading Symbol Available-for-sale, at fair value (amortized cost of $108,103 and $102,422, net of allowance for credit losses of $— and $—) Fair value Debt Securities, Available-for-Sale, Excluding Accrued Interest Banks Banks Industry [Member] Banks Industry Purchases of premises and equipment/capitalized software Payments to Acquire Property, Plant, and Equipment Capitalized Contract Cost [Axis] Capitalized Contract Cost [Axis] Financing Receivable, Allowance for Credit Loss [Line Items] Financing Receivable, Allowance for Credit Loss [Line Items] Company Selected Measure Name Company Selected Measure Name Portfolio level basis adjustments, gross unrealized gains (losses) Available-for-sale securities included in closed portfolios, subject to portfolio layer method, increase (decrease) Hedged Asset, Fair Value Hedge, Portfolio Layer Method, Hedged Layer, Fair Value, Cumulative Increase (Decrease) Purchases Payments to Acquire Debt Securities, Available-for-Sale Deposits Interest Expense, Deposits Asset managers Asset Management Industry [Member] Asset Management Industry [Member] Concentration Risk [Line Items] Concentration Risk [Line Items] Equity method investments Equity In Joint Ventures And Other Investments Equity in joint ventures and other investments Debt Securities, Held-to-maturity, Credit Quality Indicator [Table] Debt Securities, Held-to-Maturity, Credit Quality Indicator [Table] Originated, at amortized cost, current fiscal year Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year Standby letters of credit (SBLC) collateralized with cash and securities Obligation To Return Cash Or Securities Received As Collateral Obligation to Return Cash or Securities Received as Collateral on standby letters of credit Operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] After 10 years Debt Securities, Held-to-Maturity, Weighted Average Yield, Maturity, after Year 10 Dividends on common stock, cash paid (usd per share) Common Stock, Dividends, Per Share, Cash Paid Interest-bearing deposits with banks Proceeds from (Payments for) in Interest-Bearing Deposits in Banks Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] Number of liable former Directors Number of Liable Former Directors Number of Liable Former Directors U.S. Treasury US Treasury Securities [Member] Financing Receivable, Troubled Debt Restructuring [Line Items] Financing Receivable, Modified [Line Items] Entities [Table] Entities [Table] Lending commitments Commitments to Extend Credit [Member] Standby Letters of Credits by Investment Grade Commitments And Letters Of Credit Disclosure [Table Text Block] Commitments And Letters Of Credit Disclosure Total, Net amount Derivative Liability, Security Sold under Agreement to Repurchase, and Security Loaned, Including Not Subject to Master Netting Arrangement, after Offset and Deduction Common stock equivalents (shares) Weighted Average Number of Shares Outstanding, Diluted, Adjustment Other Other Intangible Assets [Member] Indefinite-lived Intangible Assets Indefinite-Lived Intangible Assets [Member] Total Segments Total Segments [Member] Total Segments Total Available For Sale Securities Weighted Average Yield Available for sale Securities, Weighted Average Yield Forecasted hedge period (less than) Cash Flow Hedge, Hedging Exposure, Maximum Period Commercial real estate Commercial Real Estate Loans [Member] Commercial Real Estate Loans [Member] Total securities Debt Securities, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year One Debt Securities, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year One Award Timing Predetermined Award Timing Predetermined [Flag] Components of Other Comprehensive Income (Loss) Comprehensive Income (Loss) [Table Text Block] Interest income Interest and Dividend Income, Operating [Abstract] Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Stock-based compensation APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Level 1 Fair Value, Inputs, Level 1 [Member] Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] Total securities (percent) Debt Securities, Weighted Average Yield, Maturity, after Year 5 Through 10 Debt Securities, Weighted Average Yield, Maturity, after Year 5 Through 10 Total derivatives fair value Total derivatives, Gross assets recognized Derivative Asset, Gross Asset Including Not Subject to Master Netting Arrangement Gain or (loss) recognized on hedged item Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge Class of Financing Receivable [Axis] Class of Financing Receivable [Axis] Class of Financing Receivable [Axis] Net gain (loss) arising during the period Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, after Tax Preferred stock, par value (usd per share) Preferred Stock, Par or Stated Value Per Share Long-term debt Long-Term Debt, Fair Value Concentration Risk Type [Domain] Concentration Risk Type [Domain] Gross unrealized losses, before portfolio level basis adjustments Debt Securities, Available-For-Sale, Accumulated Gross Unrealized Loss, Before Tax, Excluding Portfolio Level Basis Adjustments Debt Securities, Available-For-Sale, Accumulated Gross Unrealized Loss, Before Tax, Excluding Portfolio Level Basis Adjustments Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Gain or (loss) recognized on derivatives Change in Unrealized Gain (Loss) on Fair Value Hedging Instruments Securities held-to-maturity (Yield): Held To Maturity Securities Debt Maturities Average Yield [Abstract] Held to maturity Securities, Debt Maturities, Average Yield [Abstract] Expiration Date Trading Arrangement Expiration Date Hedging Relationship [Axis] Hedging Relationship [Axis] Change in nonredeemable noncontrolling interests of consolidated investment management funds Consolidated Noncash Noncontrolling Interests Transfer Of Financial Assets Consolidation Of Variable Interest Entities Noncash non-controlling interests consolidated as a result of adopting new guidance amending the accounting and the consolidation of variable entities. Gains Debt Securities, Held-to-Maturity, Accumulated Unrecognized Gain Restricted cash at end of period Restricted Cash and Cash Equivalent Total derivatives, Gross amounts not offset in the balance sheet, Financial instruments Derivative Asset, Subject to Master Netting Arrangement, Deduction of Financial Instrument Not Offset Total derivatives subject to netting arrangements, Net amount Derivative Asset, Subject to Master Netting Arrangement, after Offset and Deduction Series J Preferred Stock Series J Preferred Stock [Member] Series J Preferred Stock Total permanent equity Balance at beginning of period Balance at end of period Equity Equity, Including Portion Attributable to Noncontrolling Interest Sovereign debt/sovereign guaranteed Sovereign Debt Securities [Member] Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Table] Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Table] Depository share, shares issued (in shares) Depository Share, Shares Issued Depository Share, Shares Issued Loss contingency, aggregate range of reasonable loss (up to) Loss Contingency, Estimate of Possible Loss Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Energy and utilities Utilities And Energy [Member] Utilities and Energy Derivative [Table] Derivative [Table] Issuance of common stock Proceeds from Issuance of Common Stock Interest-bearing deposits Interest-Bearing Deposit Liabilities Costs to fulfill contract Costs To Fulfill Contract [Member] Costs To Fulfill Contract [Member] Commercial Real Estate Commercial Real Estate [Member] Investing activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] Asset derivatives fair value Derivative Asset Derivative Asset [Abstract] Segments [Domain] Segments [Domain] Interest rate swap Interest Rate Swap [Member] Fair value option Fair Value, Option [Text Block] Finite-lived Intangible Assets Finite-Lived Intangible Assets [Member] PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Securities available-for-sale, Amount: Debt Securities, Available-for-Sale, Fair Value, Fiscal Year Maturity [Abstract] Manufacturing Manufacturing [Member] Manufacturing [Member] Series L Preferred Stock Series L Preferred Stock [Member] Series L Preferred Stock Securities lending indemnifications, collateral joint venture Securities Lending Indemnifications Collateral Joint Venture This item represents Securities Lending Indemnifications Collateral for Joint Venture Total The Bank of New York Mellon Corporation shareholders’ equity Equity, Attributable to Parent Total, Gross liabilities recognized Derivative Liability, Security Sold under Agreement to Repurchase, and Security Loaned, Subject to Master Netting Arrangement, before Offset Standby letters of credit by investment grade Letters Of Credit, Percentage By Investment Grade Letters Of Credit, Percentage By Investment Grade Non-agency RMBS Non-Agency Residential Mortgage Backed Securities [Member] Non-Agency Residential Mortgage Backed Securities [Member] Prepaid pension assets Assets for Plan Benefits, Defined Benefit Plan Loan to value ratio at origination (percent) Loan To Value Ratio Loan To Value Ratio Assets Assets [Abstract] Fails to deliver Receivable from Broker-Dealer and Clearing Organization Financing Receivable Credit Quality Indicators Financing Receivable Credit Quality Indicators [Table Text Block] Measured at fair value on a nonrecurring basis Fair Value, Nonrecurring [Member] Recoveries Financing Receivable, Allowance for Credit Loss and Off Balance Sheet Credit Loss, Liability, Recovery Financing Receivable, Allowance for Credit Loss and Off Balance Sheet Credit Loss, Liability, Recovery Professional, legal and other purchased services Professional Fees Insider Trading Policies and Procedures [Line Items] Reverse repurchase agreements, Gross assets recognized Security Purchased under Agreement to Resell, Subject to Master Netting Arrangement, before Offset Income taxes refunded Proceeds from Income Tax Refunds Foreign currency translation Intangible Assets Foreign Currency Translation Gain Loss Reflects net changes to the recorded value of intangible assets for foreign currency translation adjustments needed to revise the carrying amount to fair value. Deferred tax expense (benefit) Deferred Income Tax Expense (Benefit) Schedule of Loan Portfolio and Industry Concentrations of Credit Risk Loan Portfolio [Table Text Block] Loan Portfolio Commercial real estate Commercial Real Estate Portfolio Segment [Member] Financing Receivable Portfolio Segment [Domain] Financing Receivable Portfolio Segment [Domain] Number of operating segments Number of Operating Segments Anti-dilutive securities (shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Breakdown of Goodwill by Business Goodwill [Table Text Block] Goodwill Goodwill, Gross Entity Central Index Key Entity Central Index Key Net interest income after provision for credit losses Interest Income (Expense), after Provision for Loan Loss 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] Other comprehensive (income) loss attributable to noncontrolling interests Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Noncontrolling Interest Other Stockholders' Equity, Other Proceeds from paydowns and maturities Proceeds From Prepayments And Calls Of Held-To-Maturity Securities Proceeds From Prepayments And Calls Of Held-To-Maturity Securities Other comprehensive income (loss), After-tax amount Other Comprehensive Income (Loss), before Reclassifications, Net of Tax Total other liabilities Other Liabilities and Derivative Liabilities, Fair Value Disclosure Other Liabilities and Derivative Liabilities, Fair Value Disclosure Pledging Purpose [Axis] Pledging Purpose [Axis] Liabilities of consolidated investment management funds: Liabilities of Consolidated Investment Management Funds [Abstract] Liabilities of Consolidated Investment Management Funds [Abstract] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Designated as hedging Designated as Hedging Instrument [Member] Series G Preferred Stock Series G Preferred Stock [Member] Per annum dividend rate Preferred Stock, Dividend Rate, Percentage Net investment hedges, Gain or (loss) reclassified from accumulated OCI into income Other Comprehensive Income (Loss), Net Investment Hedge, Gain (Loss), Reclassification, before Tax Healthcare benefits Other post-retirement benefits Postretirement Health Coverage [Member] Financing Receivable, Troubled Debt Restructuring [Table] Financing Receivable, Modified [Table] Interest-bearing deposits in U.S. offices Interest-Bearing Deposit Liabilities, Domestic Ba1 Moody's, Ba1 Rating [Member] Total Held To Maturity Securities Debt Maturities Average Yield Held to maturity Securities, Debt Maturities, Average Yield Without an allowance Financing Receivable, Excluding Accrued Interest, Nonaccrual, No Allowance Accumulated other comprehensive income (loss), net of tax Total accumulated other comprehensive income (loss), net of tax AOCI Attributable to Parent [Member] All Individuals All Individuals [Member] Carrying amount of hedged asset or liability, Available-for-sale securities Hedged Asset, Fair Value Hedge Cash dividends paid Payments of Dividends Pre-Tax Securities Gains (Losses) by Type Realized Gain (Loss) on Investments [Table Text Block] BBB+/ BBB- Standard & Poor's, BBB+ Rating [Member] Securities lending, Net liabilities recognized on the balance sheet Securities Loaned Statement [Line Items] Statement [Line Items] Total assets Total assets Other assets Assets Percentage of exposure to investment grade securities Percentage Of Financial Institution Exposure To Investment Grade Securities Percentage Of Financial Institution Exposure To Investment Grade Securities Schedule of Defined Benefit Plans Disclosures [Table] Defined Benefit Plan [Table] Private equity investments Private Equity Funds [Member] Interest expense Total interest expense Interest Expense, Operating Percent of financial institution exposure expiring within one year Percent of Financial Institution Exposure Expiring Within One Year Percent of Financial Institution Exposure Expiring Within One Year Internal Credit Assessment [Domain] Internal Credit Assessment [Domain] Trading liabilities Trading Liabilities Variable Interest Entity, Not Primary Beneficiary Variable Interest Entity, Not Primary Beneficiary [Member] Provision Financing Receivable, Allowance for Credit Loss and Off Balance Sheet Credit Loss, Liability, Expense (Reversal) Financing Receivable, Allowance for Credit Loss and Off Balance Sheet Credit Loss, Liability, Expense (Reversal) Financing-related fees Financing Related Fees Income from servicing real estate mortgages, credit cards, and other financial assets held by others. May also be net of any related impairment of fair value of capitalized service costs, includes capital market fees, loan commitment, fees and credit-related trade fees. Operating segments Operating Segments [Member] Hedged liability, discontinued fair value hedge, cumulative increase (decrease) Hedged Liability, Discontinued Fair Value Hedge, Cumulative Increase (Decrease) Collateralization percentage generally required for a securities lending transaction with indemnification against broker default Securities Lending Cash Collateral Percentage Cash collateralization percentage generally required for a securities lending transaction. Equity securities without readily determinable fair value, amount Equity Securities without Readily Determinable Fair Value, Amount Gains Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain, before Tax Net occupancy Occupancy, Net PEO PEO [Member] Customer payables Interest Expense Customer Payables Interest Expense Customer Payables Total, Net assets recognized on the balance sheet Derivative Asset, Securities Purchased under Agreements to Resell, Securities Borrowed Goodwill Beginning balance Ending balance Goodwill Retirement Plan Type [Axis] Retirement Plan Type [Axis] Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Financial institutions Financial Institutions [Member] Financial Institutions [Member] Bank assessment charges Bank Assessment Charges Bank Assessment Charges Securities segregated under federal or other regulations Securities Segregated under Other Regulations Total derivatives, Gross amounts not offset in the balance sheet, Financial instruments Derivative Liability, Subject to Master Netting Arrangement, Deduction of Financial Instrument Not Offset Retained earnings Retained Earnings [Member] Schedule of Available-for-Sale and Held-to-Maturity Securities [Line Items] Schedule of Available-for-sale and Held-to-maturity Securities [Line Items] [Line Items] for Schedule of Available-for-sale and Held-to-maturity Securities [Table] Pre-tax operating margin Operating Margin Percent Income before taxes divided by total revenue Unearned income on lease financings Financing Receivable, Unamortized Loan Cost (Fee) Fair value measurement Fair Value Measurement, Policy [Policy Text Block] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Award Timing Disclosures [Line Items] Foreign currency translation Accumulated Foreign Currency Adjustment Attributable to Parent [Member] Summary of Financial Instruments Not Carried at Fair Value Fair Value, by Balance Sheet Grouping [Table Text Block] Corporate bonds Corporate Debt Securities [Member] Total trading liabilities Trading Liabilities, Fair Value Disclosure Financing Receivable, Past Due [Line Items] Financing Receivable, Past Due [Line Items] Diluted (usd per share) Earnings Per Share, Diluted Internal Credit Assessment [Axis] Internal Credit Assessment [Axis] Redemption Stock Redeemed or Called During Period, Value Media and telecom Media And Telecom Industry [Member] Media and Telecom Industry [Member] Litigation Case Type [Domain] Litigation Case [Domain] Amortization of intangible assets Amortization Intangible Asset, Finite-Lived, Amortization Expense Stockholders' Equity Note [Abstract] Stockholders' Equity Note [Abstract] Originated, at amortized cost, three years before current fiscal year Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year A+/ A- Standard & Poor's, A+ Rating [Member] Offsetting Assets Offsetting Assets [Table Text Block] Beginning balance Ending balance Financing Receivable, Allowance for Credit Loss and Off Balance Sheet Credit Loss, Liability Financing Receivable, Allowance for Credit Loss and Off Balance Sheet Credit Loss, Liability Reclassification adjustment, Tax (expense) benefit Reclassification from AOCI, Current Period, Tax Total fee revenue and other revenue - contract revenue Revenue from Contract with Customer, Excluding Assessed Tax Derivative Instruments and Hedging Activities Disclosure [Table] Derivative Instruments And Hedging Activities Disclosure [Table] Derivative Instruments and Hedging Activities Disclosure [Table] Repurchase agreements, Net amount Security Sold under Agreement to Repurchase, Subject to Master Netting Arrangement, after Offset and Deduction Incremental costs for obtaining contracts Incremental Costs For Obtaining Contracts [Member] Incremental Costs For Obtaining Contracts [Member] Federal funds purchased and securities sold under repurchase agreements Federal Funds Purchased and Securities Sold under Agreements to Repurchase Assets: Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract] Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] Gross carrying amount Intangible Asset, Excluding Goodwill, before Accumulated Amortization Distribution and servicing Expense Related to Distribution or Servicing and Underwriting Fees Total derivatives, Net amount Derivative Liability, Including Not Subject to Master Netting Arrangement, after Offset and Deduction 2009-2026 Securities, Origination Between 2009 and 2026 [Member] Securities, Origination Between 2009 and 2026 Notional value Notional Disclosures [Abstract] SBLC expiring within one to five years Standby Letters Of Credit Expiring After One Through Five Year Standby letters of credit, expiring after One Through Five Years Capitalized Contract Cost [Table] Capitalized Contract Cost [Table] Federal funds purchased and securities sold under repurchase agreements Interest Expense, Federal Funds Purchased and Securities Sold under Agreements to Repurchase Provision (benefit) for other credit losses Provision for Other Credit Losses Change in assets of consolidated investment management funds Consolidated Noncash Assets Transfer Of Financial Assets Consolidation Of Variable Interest Entities Consolidated Noncash Assets, Transfer of Financial Assets, Consolidation of Variable Interest Entities Foreign Tax Authority Income Tax Jurisdiction, Foreign [Member] Gain or (loss) recognized in income on derivatives Gain (loss) recognized in the consolidated income statement due to fair value hedging relationships Derivative, Gain (Loss) on Derivative, Net Summary of Preferred Dividends Paid Dividends Declared [Table Text Block] Series I Preferred Stock Series I Preferred Stock [Member] Series I Preferred Stock Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Service cost Defined Benefit Plan, Service Cost Commercial Commercial Portfolio Exposure [Member] Commercial Portfolio Exposure Equity securities Equity Securities [Member] Investment services fees Financial Service [Member] Amortized cost Financing Receivable, Excluding Accrued Interest, Revolving Total wealth management loans Wealth Management Loans And Mortgages [Member] Wealth Management Loans And Mortgages Individually evaluated for impairment: Loan and Lease Receivables, Impaired [Abstract] Overdraft repayment period Overdraft Repayment Period Overdraft Repayment Period Securities lending, Gross amounts not offset in the balance sheet, Financial instruments Security Loaned, Subject to Master Netting Arrangement, Deduction of Financial Instrument Not Offset Summary of Transactions in the Allowance for Credit Losses Financing Receivable, Allowance for Credit Loss [Table Text Block] Common stock, issued (shares) Common Stock, Shares, Issued Within 1 year Debt Securities, Held-to-Maturity, Amortized Cost Excluding Accrued Interest, after Allowance for Credit Loss, Maturity, Allocated and Single Maturity Date, Year One Entity Information [Line Items] Entity Information [Line Items] Other assets Other Assets Disclosure [Text Block] Securities borrowing, Gross assets recognized Security Borrowed, Subject to Master Netting Arrangement, before Offset 12 months or more, Unrealized losses Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Other comprehensive income (loss) Comprehensive Income (Loss) Note [Text Block] Product and Service [Domain] Product and Service [Domain] Reverse repurchase agreements, Net amount Security Purchased under Agreement to Resell, Subject to Master Netting Arrangement, after Offset and Deduction Class of Stock [Line Items] Class of Stock [Line Items] California CALIFORNIA 1-5 years Debt Securities, Held-to-Maturity, Amortized Cost Excluding Accrued Interest, after Allowance for Credit Loss, Maturity, Allocated and Single Maturity Date, after Year One through Five Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Long-term debt Long-Term Debt [Member] Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract] Noninterest expense Noninterest Expense [Abstract] Variable Interest Entity [Line Items] Variable Interest Entity [Line Items] Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Within 1 year Debt Securities, Held-to-Maturity, Weighted Average Yield, Maturity, Year One Termination Date Trading Arrangement Termination Date AAA/ AA- AAA And AA Minus Credit Rating [Member] AAA And AA Minus Credit Rating [Member] Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Total derivatives not subject to netting arrangements Derivative Asset, Not Subject to Master Netting Arrangement Counterparty default losses recorded Derivative, Loss on Derivative Overdrafts Overdrafts [Member] Overdrafts Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] Securities [Abstract] Securities [Abstract] Securities [Abstract] Total defined benefit plans Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax Total derivatives, Net amount Derivative Asset, Including Not Subject to Master Netting Arrangement, after Offset and Deduction Fair Value as of Grant Date Award Grant Date Fair Value Debt Securities, Available-for-sale, Unrealized Loss Position, Fair Value Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value [Table Text Block] Preferred stock, basis spread on variable rate Preferred Stock Dividend Payment Rate Basis Spread On Variable Rate Preferred Stock, Dividend Payment Rate, Basis Spread on Variable Rate Schedule of Goodwill [Table] Goodwill [Table] Increase (Decrease) in Temporary Equity [Roll Forward] Increase (Decrease) in Temporary Equity [Roll Forward] Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Arrangement Duration Trading Arrangement Duration Consolidation Items [Axis] Consolidation Items [Axis] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Entity Registrant Name Entity Registrant Name Seed capital Seed Capital [Member] Seed Capital [Member] Equity instruments Equity Liability [Member] Equity Liability [Member] Less than 12 months, Unrealized losses Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Repurchase Agreements and Similar Transactions, Maturity Periods [Domain] Repurchase Agreements and Similar Transactions, Maturity Periods [Domain] Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Reverse repurchase agreements, Gross amounts not offset in the balance sheet, Financial instruments Security Purchased under Agreement to Resell, Subject to Master Netting Arrangement, Deduction of Financial Instrument Not Offset Total revenue Revenues Assets of consolidated investment management funds: Assets of Consolidated Investment Management Funds [Abstract] Assets of Consolidated Investment Management Funds [Abstract] Fair value Assets measured at NAV Alternative Investment Minimum collateral margin Financing Receivable, Minimum Collateral Margin Financing Receivable, Minimum Collateral Margin Other Assets [Abstract] Other Assets [Abstract] Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Unsettled Repurchase Agreements Unsettled Repurchase Agreements [Member] Unsettled Repurchase Agreements [Member] Goodwill [Roll Forward] Goodwill [Roll Forward] Intangible Asset, Finite-Lived, Class [Domain] Intangible Asset, Finite-Lived, Class [Domain] Tradenames Trade Names [Member] Financial Instruments Carried at Fair Value on Recurring Basis Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Investment securities: Marketable Securities [Abstract] All Award Types Award Type [Domain] Securities lending, Net amount Security Loaned, Subject to Master Netting Arrangement, after Offset and Deduction Aggregate fair value of OTC derivatives in net liability positions Derivative, Net Liability Position, Aggregate Fair Value Ratings Percentage Of Total Fair Value Percentage of total fair value Level 3 Fair Value, Inputs, Level 3 [Member] U.S. government agencies US Government Agencies Debt Securities [Member] Asset Pledged as Collateral Asset Pledged as Collateral [Member] 2027 Intangible Asset, Finite-Lived, Estimated Amortization Expense, Year One Residual interest received from sale of investment Residual interest received from sale of investment Residual interest received from sale of investment Geographical [Axis] Geographical [Axis] Cash segregated under federal or other regulations Restricted Cash Contract with customer, liability Contract with Customer, Liability NAV Fair Value Measured at Net Asset Value Per Share [Member] Other borrowed funds Proceeds from (Repayments of) Other Debt Debt securities, held-to-maturity, allowance for credit loss (less than) Debt Securities, Held-to-Maturity, Allowance for Credit Loss, Excluding Accrued Interest Other assets, net of allowance for credit losses on accounts receivable of $3 and $3 (includes $2,125 and $1,666, at fair value) Total other assets Other Assets 30 to 59 Days Past Due Financial Asset, 30 to 59 Days Past Due [Member] Total, Gross amounts offset in the balance sheet Derivative Asset, Security Purchased under Agreement to Resell, and Security Borrowed, Subject to Master Netting Arrangement, Liability Offset Gross unrealized, Gain, Total Debt Securities, Available-for-sale and Held-to-maturity, Unrealized Gain Debt Securities, Available-for-sale and Held-to-maturity, Unrealized Gain Up to 30 days Maturity Less than 30 Days [Member] Carrying amount of hedged asset or liability, Long-term debt Hedged Liability, Fair Value Hedge Securities available-for-sale (Yield): Available For Sale Securities Debt Maturities Average Yield [Abstract] Available for sale Securities, Debt Maturities, Average Yield [Abstract] Repurchase of common stock Treasury Stock, Value, Acquired, Cost Method Equity securities without readily determinable fair value, downward price adjustment, cumulative amount Equity Securities without Readily Determinable Fair Value, Downward Price Adjustment, Cumulative Amount Cash and due from banks and restricted cash at beginning of period Cash and due from banks and restricted cash at end of period Cash and due from banks and restricted cash at end of period Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Non-NEOs Non-NEOs [Member] Financing Receivable, Allowance for Credit Loss [Roll Forward] Financing Receivable, Allowance for Credit Loss [Roll Forward] Overnight and continuous Maturity Overnight [Member] Change in liabilities of consolidated investment management funds Consolidated Noncash Liabilities Transfer Of Financial Assets Consolidation Of Variable Interest Entities Consolidated Noncash Liabilities, Transfer of Financial Assets, Consolidation of Variable Interest Entities 2028 Intangible Asset, Finite-Lived, Estimated Amortization Expense, Year Two Derivatives subject to netting arrangements, Net liabilities recognized in the balance sheet Derivative Liability, Subject to Master Netting Arrangement, before Offset of Collateral Lawsuit In The Russian Federation, One Lawsuit In The Russian Federation, One [Member] Lawsuit In The Russian Federation, One Treasury stock acquired Payments for Repurchase of Common Stock Statistical Measurement [Axis] Statistical Measurement [Axis] Schedule of Gains (Losses) Related to Hedging Derivative Instruments, Gain (Loss) [Table Text Block] Award Type Award Type [Axis] Cash flow hedges, Gain or (loss) recognized in accumulated OCI on derivatives Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax Interest rate contracts Interest Rate Contract [Member] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Deposits with the Federal Reserve and other central banks Interest Income Deposits With Federal Reserve And Other Central Banks Interest income derived from funds deposited with the Federal Reserve and other central banks. Available-for-sale, amortized cost Amortized cost Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, after Allowance for Credit Loss Retained earnings Retained Earnings (Accumulated Deficit) Product and Service [Axis] Product and Service [Axis] Florida FLORIDA Total revenue Total Revenues Including Revenue Generated By Variable Interest Entities Total Revenues, Including Revenue Generated by Variable Interest Entities Average assets Segment Reporting Information Average Total Assets Segment Reporting Information, Average Total Assets Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Pension Benefits Pension Plan Pension Plan [Member] Common Stock, $0.01 par value Common stock Common Stock [Member] Fair value Debt Securities, Available-for-Sale Schedule of Fair Value, Off-balance Sheet Risks [Table] Fair Value, off-Balance-Sheet Risk [Table] Depositary shares per share Depository Share, Portion of Preferred Stock Share, Percent Depository Share, Portion of Preferred Stock Share, Percent Depositary Shares Depositary Shares [Member] Depositary Shares Not Designated as Hedging Instrument, Economic Hedge Not Designated as Hedging Instrument, Economic Hedge [Member] Intangible Asset, Finite-Lived, after Accumulated Amortization, Estimated Amortization Expense, Fiscal Year Maturity [Abstract] Intangible Asset, Finite-Lived, after Accumulated Amortization, Estimated Amortization Expense, Fiscal Year Maturity [Abstract] Investment grade Investment Grade [Member] Investment grade [Member] Court Type [Domain] Court Type [Domain] Court Type Derivative Contract [Domain] Derivative Contract [Domain] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Foreign currency translation Goodwill, Foreign Currency Translation, Gain (Loss) Total past due Financial Asset, Past Due [Member] Total net investment securities gains (losses) Total net investment securities gains (losses) Debt Securities, Available-for-Sale, Realized Gain (Loss) Total liabilities, temporary equity and permanent equity Liabilities and Equity Business development Business Development Employee Stock Option Share-Based Payment Arrangement, Option [Member] German Tax Matters German Tax Matters [Member] German Tax Matters Reclassification adjustment, Pre-tax amount Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax Nonredeemable noncontrolling interests of consolidated investment management funds Nonredeemable noncontrolling interests Equity, Attributable to Noncontrolling Interest Corporate/bank-owned life insurance Life Insurance, Corporate or Bank Owned, Amount Business Segments [Axis] Segments [Axis] Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Trading liabilities Interest Expense, Trading Liabilities Asset Class [Axis] Asset Class [Axis] Summary of Hedged Items in Fair Value Hedging Relationships Schedule of Fair Value Hedging Instruments, Statements of Financial Performance and Financial Position, Location [Table Text Block] Debt instruments Debt Securities, Trading Tabular List, Table Tabular List [Table Text Block] Voting Model Entity, Primary Beneficiary Voting Model Entity, Primary Beneficiary [Member] Voting Model Entity, Primary Beneficiary Other Defined Benefit Plan, Other Cost (Credit) Additional paid-in capital Additional Paid in Capital Amortization of prior service credit, net loss and initial obligation included in net periodic benefit cost Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, after Tax Amortized Cost and Fair Values of Securities Unrealized Gain (Loss) on Investments [Table Text Block] Purchases Payments to Acquire Held-to-Maturity Securities 2029 Intangible Asset, Finite-Lived, Estimated Amortization Expense, Year Three 2026 Intangible Asset, Finite-Lived, Estimated Amortization Expense, Remainder of Fiscal Year Name Awards Close in Time to MNPI Disclosures, Individual Name Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member] Trading liabilities: Debt Instrument, Fair Value Disclosure [Abstract] Financing Receivable Portfolio Segment [Axis] Financing Receivable Portfolio Segment [Axis] Transfers from loans to other assets for other real estate owned Real Estate Owned, Transfer to Real Estate Owned Schedule of Defined Benefit Plans Disclosures Schedule of Defined Benefit Plans Disclosures [Table Text Block] Value-at-risk methodology assumed holding period for instruments Value At Risk Assumed Holding Period For Instruments Value At Risk Assumed Holding Period For Instruments Preferred stock – par value $0.01 per share; authorized 100,000,000 shares; issued 48,001 and 48,826 shares Carrying value Preferred Stock, Value, Issued Adjustment to Compensation: Adjustment to Compensation [Axis] Percentage of total assets prior to netting Percent Of Assets Prior To Netting Percent of total carrying value of assets prior to netting. Reclassification adjustment, After-tax amount Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax Series M Preferred Stock Series M Preferred Stock [Member] Series M Preferred Stock Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Interest paid Interest Paid, Excluding Capitalized Interest, Operating Activity Foreign currency translation Accumulated Foreign Currency Adjustment Including Portion Attributable to Noncontrolling Interest [Member] Hedging Designation [Axis] Hedging Designation [Axis] 60 to 89 Days Past Due Financial Asset, 60 to 89 Days Past Due [Member] Total assets Assets, Fair Value Disclosure Name Measure Name Pay vs Performance Disclosure [Line Items] Debt instruments Debt [Member] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Other Other Operating Segment [Member] Federal Reserve Discount Window Borrowings Federal Reserve Discount Window Borrowings [Member] Federal Reserve Discount Window Borrowings Off-balance sheet credit risks Fair Value Disclosure, off-Balance-Sheet Risks, Amount, Liability Equity Swap Equity Swap [Member] Investment services fees Securities Servicing And Treasury Services Fees Fees earned for providing securities servicing and treasury services. Net interest income Interest Income (Expense), after Provision for Loan Loss [Abstract] Securities Lending Indemnification Details [Axis] securities lending indemnification detail [Axis] securities lending indemnification detail [Axis] Without an allowance, Other assets owned Financing Receivable, Nonaccrual, No Allowance, Other Assets Owned Financing Receivable, Nonaccrual, No Allowance, Other Assets Owned Loans Interest and Fee Income, Financing Receivable Securities By Origination [Axis] Securities By Origination [Axis] Securities by Origination [Axis] Additional paid-in capital Additional Paid-in Capital [Member] Amortization of preferred stock discount Preferred Stock, Amortization Of Deferred Fees Preferred Stock, Amortization Of Deferred Fees Indefinite-lived Intangible Assets [Axis] Intangible Asset, Indefinite-Lived, Class [Axis] 5-10 years Debt Securities, Available-for-Sale, Weighted Average Yield, Maturity, after Year 5 Through 10 Schedule of Nonperforming Assets [Table] Schedule of Nonperforming Assets [Table] Schedule of Nonperforming Assets Summary of Off-Balance Sheet Credit Risks, Net of Participations Schedule of Fair Value, off-Balance-Sheet Risks [Table Text Block] Interest Revenue (Expense), Net [Abstract] Interest Income (Expense), Operating and Nonoperating [Abstract] Goodwill impairment Goodwill, Impairment Loss Accrued taxes and other expenses Accrued Liabilities Fee and other revenue - not in scope of ASC 606 Revenue Not from Contract with Customer Net change in loans Payments for (Proceeds from) Other Loans and Leases Other Other Countries [Member] Other Countries [Member] Accrued interest receivable Interest Receivable Name Trading Arrangement, Individual Name Cash and due from banks at end of period (unrestricted cash) Cash and Cash Equivalent Other liabilities, fair value Other liabilities Other Liabilities, Fair Value Disclosure Retirement Plan Sponsor Location [Axis] Retirement Plan Sponsor Location [Axis] Claims settled, number (in claims) Loss Contingency, Claims Settled, Number Transfer of Certain Financial Assets Accounted for as Secured Borrowings Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Table Text Block] Company Selected Measure Amount Company Selected Measure Amount Fair Value of Derivative Contracts Falling under Early Termination Provisions that were in Net Liability Position Contingent Features In Over Counter Derivative Instruments [Table Text Block] Contingent Features In Over Counter Derivative Instruments [Table Text Block] Series F Preferred Stock Series F Preferred Stock Series F Preferred Stock [Member] Income taxes receivable Income Taxes Receivable Retirement Plan Sponsor Location [Domain] Retirement Plan Sponsor Location [Domain] Services and other Services And Other Industry [Member] Services and Other Industry [Member] Number of cases commenced Loss Contingency, Cases Commenced, Number Loss Contingency, Cases Commenced, Number Number of investment funds Number of Investment Funds Number of Investment Funds Repurchase agreements, Gross liabilities recognized Security Sold under Agreement to Repurchase, Subject to Master Netting Arrangement, before Offset Preferred Stock, Redemption Amount Preferred Stock, Redemption Amount Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Accounts and Financing Receivables [Table] Non-PEO NEO Non-PEO NEO [Member] Credit contracts Credit Risk Contract [Member] Other Other Industry [Member] Other Industry [Member] Total noninterest expense Noninterest expense Noninterest Expense Award Timing Method Award Timing Method [Text Block] Change in cash and due from banks and restricted cash Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Securities lending indemnifications, secured amount of collateral Securities Lending Indemnifications Collateral This item represents the amount of securities lending indemnifications collateral. Net income applicable to shareholders of The Bank of New York Mellon Corporation Net income applicable to shareholders of The Bank of New York Mellon Corporation Net Income (Loss) Attributable to Parent Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Balance Sheet Location [Axis] Location, Statement of Financial Position, Balance [Axis] Financing Receivable, Past Due [Table] Financing Receivable, Past Due [Table] With an allowance, Other assets owned Financing Receivable, 90 Days or More Past Due, Still Accruing, Other Assets Owned Financing Receivable, 90 Days or More Past Due, Still Accruing, Other Assets Owned Restatement Determination Date: Restatement Determination Date [Axis] BBB Standard & Poor's, BBB Rating [Member] Proceeds from paydowns and maturities Proceeds from Prepayments and Calls of Debt Securities, Available-for-sale Proceeds from Prepayments and Calls of Debt Securities, Available-for-sale Business realignment Goodwill, Transfers New claims filed, number (in claims) Loss Contingency, New Claims Filed, Number Business realignment Intangible Asset, Transfers Intangible Asset, Transfers Summary of Other Assets Presented on the Consolidated Balance Sheet Schedule of Other Assets [Table Text Block] Restricted cash, interest-bearing deposits in banks and other financial institutions Restricted Cash, Interest-Bearing Deposits In Banks And Other Financial Institutions Restricted Cash, Interest-Bearing Deposits In Banks And Other Financial Institutions Security lending, Gross amounts offset in the balance sheet Security Loaned, Subject to Master Netting Arrangement, Asset Offset Net investment hedges, Gain or (loss) recognized in accumulated OCI on derivatives Other Comprehensive Income (Loss), Net Investment Hedge, Gain (Loss), before Reclassification and Tax Invested in reverse repurchase agreements Invested in reverse repurchase agreements [Member] Invested in reverse repurchase agreements [Member] Brazilian Postalis Litigation Brazilian Postalis Litigation [Member] Brazilian Postalis Litigation [Member] Fee and other revenue Revenues [Abstract] Collateral posted Collateral Already Posted, Aggregate Fair Value Temporary equity Temporary Equity [Abstract] Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] Average common shares and equivalents outstanding: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Income before income taxes Income Loss From Continuing Operations Before Income Taxes Sum of operating profit and nonoperating income (expense) before income taxes. Statistical Measurement [Domain] Statistical Measurement [Domain] Document Fiscal Year Focus Document Fiscal Year Focus Effect of master netting agreements Derivatives subject to netting arrangements, Gross amounts offset in the balance sheet Derivative Liability, Subject to Master Netting Arrangement, Asset Offset Derivative liability, collateral, right to reclaim cash, offset Derivative Liability, Subject to Master Netting Arrangement, Collateral, Right to Reclaim Cash Offset Securities sold not settled Securities, Sales Not Settled Securities sales not settled Agency residential mortgage-backed securities (“RMBS”) Agency Residential Mortgage Backed Securities [Member] Agency Residential Mortgage Backed Securities [Member] Total deposits Deposits Foreign exchange revenue Foreign Exchange Revenue Foreign Exchange Revenue Depreciation and amortization Depreciation, Amortization and Accretion, Net Trading Liabilities [Domain] Trading Liabilities [Domain] [Domain] for Trading Liabilities [Axis] Securities borrowing, Net amount Security Borrowed, Subject to Master Netting Arrangement, after Offset and Deduction Securities borrowing, Net assets recognized on the balance sheet Securities Borrowed Commercial paper Proceeds from (Repayments of) Commercial Paper Restatement Determination Date Restatement Determination Date Derivative asset, collateral, obligation to return cash, offset Derivative Asset, Subject to Master Netting Arrangement, Collateral, Obligation to Return Cash, Offset Against Derivative Asset Expected return on assets Defined Benefit Plan, Expected Return (Loss) on Plan Assets Impacts of Hedging Derivatives in Net Investment Hedging Relationships Schedule of Derivative Instruments, Effect on Other Comprehensive Income (Loss) [Table Text Block] Dividend paid per share (usd per share) Preferred Stock, Dividend Rate, Per-Dollar-Amount Other Other Noninterest Expense Loans modified after 12 months Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months Other assets, allowance for credit loss on accounts receivable Accounts Receivable, Allowance for Credit Loss Loans and asset quality Financing Receivables [Text Block] Amendment Flag Amendment Flag Goodwill [Line Items] Goodwill [Line Items] New York NEW YORK Fair Value Assets And Liabilities Component [Domain] Fair Value Assets And Liabilities Component [Domain] Fair Value, Assets and Liabilities Component Domain Federal Reserve Bank stock Federal Reserve Bank Stock Losses Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Loss, before Tax Standby letters of credit Standby Letters of Credit [Member] External Credit Rating, Moody's [Domain] External Credit Rating, Moody's [Domain] Incremental Assets and Liabilities Included in Consolidated Financial Statements Consolidation Of Variable Interest Entities Disclosure [Table Text Block] Consolidation Of Variable Interest Entities Disclosure Investments [Domain] Investments [Domain] Government Government Contracts Concentration Risk [Member] Other comprehensive income (loss) Temporary Equity, Other Comprehensive Income (Loss) Temporary Equity, Other Comprehensive Income (Loss) Federal Home Loan Bank Advances Federal Home Loan Bank Advances [Member] Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Entity Address, State or Province Entity Address, State or Province Foreign exchange adjustment Other Comprehensive Income (Loss) Defined Benefit Plan, Foreign Currency Translation Adjustment, After Tax The accumulated change in the value of pension and other postretirement benefit plans during the period resulting from the process of translating subsidiary financial statements and foreign equity investments into the reporting currency of the reporting entity, net of tax. Forecasted Foreign Currency Forecasted Foreign Currency [Member] Forecasted Foreign Currency [Member] Total Financing Receivable, Excluding Accrued Interest, Nonaccrual PEO Total Compensation Amount PEO Total Compensation Amount Tax credit investments Investment, Proportional Amortization Method, Elected, Amount Foreign currency translation adjustments Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Total fee revenue Total Fee Revenue Total fee revenue Hedged financial instruments, notional amount of derivative Notional amount of hedge Derivative, Notional Amount Basic (shares) Weighted Average Number of Shares Outstanding, Basic Contract assets representing accrued revenues not yet billed Contract with Customer, Asset, after Allowance for Credit Loss, Current Accumulated impairment losses Goodwill, Impaired, Accumulated Impairment Loss Lending commitment maturing in less than one year Lending Commitment Maturing Within One Year Lending Commitment, Maturing Within One Year Securities lending, Gross liabilities recognized Security Loaned, Subject to Master Netting Arrangement, before Offset Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Financing Receivable, Credit Quality Indicator [Line Items] Financing Receivable, Credit Quality Indicator [Line Items] Interest-bearing deposits with banks, net of allowance for credit losses of $3 and $3 (includes restricted of $3,901 and $2,848) Interest-bearing deposits with banks Interest-Bearing Deposits in Banks and Other Financial Institutions Unfunded Loan Commitment Unfunded Loan Commitment [Member] 5-10 years Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10 Massachusetts MASSACHUSETTS Total fee and other revenue Total fee and other revenue Noninterest Income Matters Related to R. Allen Stanford Matters Related to R. Allen Stanford [Member] Matters Related to R. Allen Stanford [Member] Court Type [Axis] Court Type [Axis] Court Type [Axis] Noncash Investing and Financing Transactions that are Not Reflected in Consolidated Statement of Cash Flows Schedule of Cash Flow, Supplemental Disclosures [Table Text Block] Defined Benefit Plan Disclosure [Line Items] Defined Benefit Plan Disclosure [Line Items] Commercial paper Commercial Paper Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Class of Stock [Axis] Class of Stock [Axis] Net investment securities losses Net Securities Gain (Loss) This item represents the total realized gain (loss) included in earnings for the period as a result of selling marketable securities categorized as available-for-sale or held-to-maturity. Additionally, this item would include any losses recognized for other than temporary impairments of the subject investments in debt and equity securities. Net income applicable to common shareholders of The Bank of New York Mellon Corporation Net Income (Loss) Available to Common Stockholders, Basic Investment and other revenue Investment And Other Income Investment and other income includes income from insurance contracts, gains and losses on seed capital investments, lease residual gains, expense reimbursements from joint ventures, equity investment revenue or loss, asset-related gains, gains and losses on private equity investments, and other income (loss). Asset-related gains include loan, real estate and other asset dispositions. Expense reimbursements from joint ventures relate to expenses incurred by BNY Mellon on behalf of joint ventures. Other income (loss) primarily includes fees from transitional service agreements, other investments and various miscellaneous revenues. Accumulated amortization Intangible Asset, Finite-Lived, Accumulated Amortization Receivable [Domain] Receivable [Domain] Repurchase agreements Financial Assets Sold under Agreements to Repurchase, Gross Including Not Subject to Master Netting Arrangement Preferred stock dividends Preferred dividends paid Dividends, Preferred Stock Net loans Financing Receivable, Excluding Accrued Interest, after Allowance for Credit Loss Total securities (percent) Debt Securities, Weighted Average Yield, Maturity, Year One Debt Securities, Weighted Average Yield, Maturity, Year One Less: Treasury stock of 745,003,886 and 728,730,568 common shares, at cost Treasury Stock, Value Litigation Case [Axis] Litigation Case [Axis] Net (loss) arising during the period Accumulated Defined Benefit Plans Adjustment, Net Gain (Loss) Including Portion Attributable to Noncontrolling Interest [Member] Noncontrolling Interest Noncontrolling Interest [Member] Federal Court Federal Court [Member] Federal Court [Member] Domestic Plan Domestic Plan [Member] Financial instruments, owned, at fair value Financial Instruments, Owned, at Fair Value Net (charge-offs) recoveries Financing Receivable, Allowance for Credit Loss and Off Balance Sheet Credit Loss, Liability, Writeoff, after Recovery Financing Receivable, Allowance for Credit Loss and Off Balance Sheet Credit Loss, Liability, Writeoff, after Recovery Other trading revenue Trading Gain (Loss) Total other comprehensive income (loss), Pre-tax amount Other Comprehensive Income (Loss), before Tax Long-term debt Long-Term Debt 30-90 days Maturity 30 to 90 Days [Member] Originated, at amortized cost, two years before current fiscal year Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year Total other assets Other Assets and Derivative Assets, Fair Value Disclosure Other Assets and Derivative Assets, Fair Value Disclosure Net cash provided by (used for) investing activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] Insurance Insurance Industry [Member] Insurance Industry [Member] Preferred stock Equity [Text Block] Hedged financial instruments Derivative, Amount of Hedged Item Security Exchange Name Security Exchange Name Other net changes in noncontrolling interests Noncontrolling Interest, Period Increase (Decrease) Interest rate swaps designated as portfolio layer method fair value hedges of loans Available-for-sale securities included in closed portfolios, subject to portfolio layer method Hedged Asset, Fair Value Hedge, Portfolio Layer Method, Hedged Layer, Amount Total liabilities Liabilities, Fair Value Disclosure Duration for funding future investments Investment Program, Proportional Amortization Method, Elected, Commitment, Duration For Funding Investment Program, Proportional Amortization Method, Elected, Commitment, Duration For Funding Pension plan contributions Payment for Pension Benefits 12 months or more, Fair value Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer Federal funds sold and securities purchased under resale agreements Interest Income, Federal Funds Sold and Securities Purchased under Agreements to Resell Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Cash collateral receivable on derivative transactions Cash Collateral Receivable On Derivative Transactions Cash Collateral Receivable On Derivative Transactions Name Outstanding Recovery, Individual Name Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] Securities held-to-maturity, Amount: Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Maturity [Abstract] Geographical [Domain] Geographical [Domain] Components of Net Interest Income Interest Income and Interest Expense Disclosure [Table Text Block] Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year [Member] 1-5 years Debt Securities, Held-to-Maturity, Weighted Average Yield, Maturity, after Year One Through Five Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Federal funds sold and securities purchased under resale agreements Proceeds from (Payments for) Federal Funds Sold and Securities Purchased under Agreements to Resell, Net Long-term debt Interest Expense, Long-Term Debt Total unrealized gain (loss) on assets available-for-sale OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment and Tax Other borrowed funds Interest Expense, Other Short-Term Borrowings Federal funds purchased and securities sold under repurchase agreements Increase (Decrease) in Federal Funds Purchased and Securities Sold under Agreements to Repurchase, Net Accumulated Defined Benefits Adjustment Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] Equity securities without readily determinable fair value, net adjustment, annual amount Equity Securities without Readily Determinable Fair Value, Net Adjustment, Annual Amount Equity Securities without Readily Determinable Fair Value, Net Adjustment, Annual Amount Assets of consolidated investment management funds Assets of Consolidated Investment Management Funds Assets of Consolidated Investment Management Funds Income Income [Abstract] Income [Abstract] Investment securities purchased not settled Securities Not Settled Securities Not Settled Securities – Available-for-sale Debt Securities [Member] AOCI, Accumulated Gain (Loss), Debt Securities, Available-For-Sale Securities Transferred To Held-To-Maturity, After 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Rights (SARs) [Member] After 10 years Debt Securities, Available-for-Sale, Weighted Average Yield, Maturity, after Year 10 City Area Code City Area Code BBB+/ BBB- B B B Plus And B B B Minus Credit Rating [Member] BBB Plus and BBB Minus Credit Rating [Member] Geographic Concentration Risk Geographic Concentration Risk [Member] Commercial Commercial Loans [Member] Commercial Loans [Member] Name Forgone Recovery, Individual Name Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Fair value of hedging derivatives Derivative Instruments in Hedges, Assets, at Fair Value Preferred stock, issued (shares) Preferred Stock, Shares Issued Financial institutions Financial Institutions Portfolio [Member] Financial Institutions Portfolio Total securities (percent) Debt Securities, Weighted Average Yield, Maturity, after Year One Through Five Debt Securities, Weighted Average Yield, Maturity, after Year One Through Five Interest income Total interest income Interest and Dividend 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Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member] Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Unrealized gain (loss) arising during the period OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, after Tax Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Entity Current Reporting Status Entity Current Reporting Status Net cash provided by (used for) financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Total Shareholder Return Amount Total Shareholder Return Amount Amortization of prior service credit, net loss and initial obligation included in net periodic benefit cost Accumulated Defined Benefit Plans Adjustment, Net Transition Including Portion Attributable to Noncontrolling Interest [Member] Distribution of Nonperforming Assets Non Performing Assets [Table Text 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