Income Statement [Abstract] Statements of Earnings [Abstract] Average common shares outstanding Average common shares outstanding Abstract Average common shares outstanding Abstract. Diluted Weighted Average Number of Shares Outstanding, Diluted, Total Weighted Average Number of Shares Outstanding, Diluted Basic Weighted Average Number of Shares Outstanding, Basic, Total Weighted Average Number of Shares Outstanding, Basic Earnings (loss) per common share Earnings Per Share [Abstract] Earnings per common share Diluted Earnings Per Share, Diluted, Total Earnings Per Share, Diluted Basic Earnings Per Share, Basic, Total Earnings Per Share, Basic Net earnings applicable to common shareholders Net earnings/(loss) applicable to common shareholders Net Income (Loss) Available to Common Stockholders, Basic Preferred stock dividends Preferred Stock Dividends I S The amount of dividends declared or accrued in the period to preferred shareholders. Preferred stock dividends Net earnings/(loss) Net Income (Loss) Attributable to Parent, Total Net Income (Loss) Attributable to Parent Provision for taxes Provision/(Benefit) for taxes Income Tax Expense (Benefit) Total operating expenses Total operating expenses Noninterest Expense Total non-compensation expenses Total Non Compensation Expenses Total non-compensation expenses. Total non-compensation expenses Other expenses Other Noninterest Expense Other expenses Professional fees Professional Fees I S Primarily includes legal, audit and consulting fees. Occupancy Occupancy Amount of net occupancy expense that includes items, such as lease expenses, property taxes and property and casualty insurance expense. Depreciation and amortization Depreciation And Amortization I S The current period expense charged against earnings on property, leasehold improvements, equipment and identifiable intangible assets to allocate or recognize the cost of assets over their useful lives. Communications and technology Communications and Information Technology, Total Communications and Information Technology Market development Business Development Brokerage, clearing, exchange and distribution fees Brokerage Clearing Exchange And Distribution Fees Fees paid to other brokers for the execution of transactions. Also includes exchange and clearance fees, third party research and brokerage fees, and asset management sales and distribution fees. Compensation and benefits Labor and Related Expense Compensation and benefits Revenues, net of interest expense Net revenues including net interest income Aggregate revenue recognized during the period derived from investment banking, trading and principal investments, asset management and securities services and interest income, net interest expense from cash instruments, collateralized transactions and other financial assets. Net revenues, including net interest income Interest income Interest Income Interest and dividend revenues from cash instruments, collateralized transactions and other financial assets. Interest income Revenues Revenues [Abstract] Asset management and securities services Asset management and securities services Fees from providing investment advisory and financial planning services and offering investment products (primarily management and incentive fees) and providing prime brokerage services. Asset management and securities services Trading and principal investments Trading and principal investments Revenues from facilitating client transactions with a diverse group of corporations, financial institutions, investment funds, governments and individuals and taking proprietary positions through market making in, trading of and investing in fixed income and equity products, currencies, commodities and derivatives on these products. In addition, the firm engages in market-making and specialist activities on equities and options exchanges, and the firm clears client transactions on major stock, options and futures exchanges worldwide. In connection with the firm's merchant banking and other investing activities, the firm makes principal investments directly and through funds that the firm raises and manages. Investment banking Investment banking Fees for advisory assignments with respect to mergers and acquisitions, divestitures, corporate defense activities, restructurings and spin-offs, and fees for underwriting public offerings and private placements of a wide range of securities and other financial instruments. Statement of Financial Position [Abstract] Statements of Financial Condition [Abstract] Liabilities and shareholders' equity Liabilities and Stockholders' Equity [Abstract] Assets Assets [Abstract] Shareholders' equity Stockholders' Equity [Abstract] Total liabilities and shareholders' equity Total liabilities and shareholders' equity Liabilities and Stockholders' Equity Total shareholders' equity Total shareholders' equity Balance Balance Stockholders' Equity Common stock held in treasury, at cost, par value $0.01 per share; 238,298,357 and 238,416,519 shares as of December 2009 and November 2008, respectively Treasury Stock, Value, Beginning Balance Treasury Stock, Value, Ending Balance Treasury Stock, Value Common stock held in treasury, at cost, par value $0.01 per share; 238,298,357 and 238,416,519 shares as of December 2009 and November 2008, respectively Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax, Total Accumulated Other Comprehensive Income (Loss), Net of Tax, Beginning Balance Accumulated Other Comprehensive Income (Loss), Net of Tax, Ending Balance Accumulated Other Comprehensive Income (Loss), Net of Tax Retained earnings Retained Earnings (Accumulated Deficit), Total Retained Earnings (Accumulated Deficit), Beginning Balance Retained Earnings (Accumulated Deficit), Ending Balance Retained Earnings (Accumulated Deficit) Additional paid-in capital Additional Paid in Capital, Total Additional Paid in Capital, Beginning Balance Additional Paid in Capital, Ending Balance Additional Paid in Capital Nonvoting common stock, par value $0.01 per share; 200,000,000 shares authorized, no shares issued and outstanding Nonvoting Common Stock Value of nonvoting common stock that may be calculated differently depending on whether the stock is issued at par value, no par or stated value. Restricted stock units and employee stock options Restricted stock units and employee stock options Amounts related to restricted stock units and employee stock options. Common stock, par value $0.01 per share; 4,000,000,000 shares authorized, 753,412,247 and 680,953,836 shares issued as of December 2009 and November 2008, respectively, and 515,113,890 and 442,537,317 shares outstanding as of December 2009 and November 2008, respectively Common Stock, Value, Issued, Total Common Stock, Value, Issued, Beginning Balance Common Stock, Value, Issued, Ending Balance Common Stock, Value, Issued Preferred stock, par value $0.01 per share; aggregate liquidation preference of $8,100 and $18,100 as of December 2009 and November 2008, respectively Preferred Stock, Value, Issued, Total Preferred Stock, Value, Issued, Beginning Balance Preferred Stock, Value, Issued, Ending Balance Preferred Stock, Value, Issued Total liabilities Total liabilities Liabilities Other liabilities and accrued expenses (includes $2,054 and $978 at fair value as of December 2009 and November 2008, respectively) Other Liabilities And Accrued Expenses Primarily includes insurance-related, compensation and benefits, income tax related and other accrued expenses and payables. Other liabilities and accrued expenses (includes $2,054 and $978 at fair value as of December 2009 and November 2008, respectively) Unsecured long-term borrowings (includes $21,392 and $17,446 at fair value as of December 2009 and November 2008, respectively) Unsecured Long-term Debt, Noncurrent Unsecured short-term borrowings, including the current portion of unsecured long-term borrowings (includes $18,403 and $23,075 at fair value as of December 2009 and November 2008, respectively) Unsecured Short Term Borrowings Including Current Portion Of Unsecured Long Term Borrowings Carrying value as of the balance sheet date of uncollateralized debt obligation (with maturities due within one year) including the current portion of unsecured long-term borrowings. Trading liabilities, at fair value Trading Liabilities At Fair Value The carrying amount of liabilities as of the balance sheet date that pertain to principal and customer trading transactions, or which may be incurred with the objective of generating a profit from short-term fluctuations in price as part of an entity's market-making, hedging and proprietary trading. Examples include short positions in securities, derivatives and commodities. Payables to customers and counterparties Payables to customers and counterparties Amounts payable to customers and counterparties arising from transactions relating to the entity's activities and operations. Payables to brokers, dealers and clearing organizations Payables To Broker Dealers And Clearing Organizations B S Aggregate amounts payable to broker-dealers and clearing organizations include amounts payable for securities failed to receive, amounts payable to clearing organizations on open transactions, and floor-brokerage payables. In addition, the net receivable or payable arising from unsettled trades would be reflected in those captions. A broker-dealer that purchases securities, either for its own account or for a customer's account, but does not receive the securities on the settlement date records the amount of money representing the purchase price of the securities, including any accrued interest, as a liability to the selling broker-dealer. This liability is paid when the securities are received by the purchasing broker-dealer. Other secured financings (includes $15,228 and $20,249 at fair value as of December 2009 and November 2008, respectively) Other Secured Financings Securities loaned (includes $6,194 and $7,872 at fair value as of December 2009 and November 2008, respectively) Securities Loaned B S The carrying value as of the balance sheet date of securities loaned typically used to cover short sales and secured by cash until the borrowing is closed. Securities sold under agreements to repurchase, at fair value Securities Sold under Agreements to Repurchase Deposits (includes $1,947 and $4,224 at fair value as of December 2009 and November 2008, respectively) Deposits, Total Deposits Total assets Total assets Assets Other assets Other Assets B S Primarily includes property, leasehold improvements and equipment, goodwill and identifiable intangible assets and income tax-related assets. Other assets Trading assets, at fair value (includes $31,485 and $26,313 pledged as collateral as of December 2009 and November 2008, respectively) Trading Securities, Total Trading Securities Receivables from customers and counterparties (includes $1,925 and $1,598 at fair value as of December 2009 and November 2008, respectively) Receivables From Customers And Counterparties Amount due from customers arising from transactions related to the entity's activities and operations. Receivables from brokers, dealers and clearing organizations Receivables from brokers, dealers and clearing organizations Amounts receivable from securities failed to deliver, amounts receivable from clearing organizations relating to open transactions, good faith and margin deposits, and commissions and floor brokerage receivables. Receivables From Brokers Dealers And Clearing Organizations B S Securities borrowed (includes $66,329 and $59,810 at fair value as of December 2009 and November 2008, respectively) Securities Borrowed Securities purchased under agreements to resell and federal funds sold (includes $144,279 and $116,671 at fair value as of December 2009 and November 2008, respectively) Securities Purchased Under Agreements To Resell And Federal Funds Sold Includes: (1) collateralized financing transactions in the form of security resale agreements regardless of maturity, if the agreement requires the bank to resell the same or substantially the same security to the same counterparty at a fixed or determinable price at a future date and (2) the amount outstanding of funds lent to other depository institutions, securities brokers, or securities dealers in the form of Federal Funds sold. Cash and securities segregated for regulatory and other purposes (includes $18,853 and $78,830 at fair value as of December 2009 and November 2008, respectively) Cash And Securities Segregated For Regulatory And Other Purposes Cash and securities segregated in compliance with federal or other regulations (such as cash deposited in a special reserve account for the exclusive benefit of customers pursuant to customer protection SEC rule 15c3-3). Also includes insurance separate account assets. Cash and cash equivalents Cash And Cash Equivalents Includes currency on hand as well as demand deposits with banks or financial institutions. Cash equivalents include highly liquid overnight deposits held in the ordinary course of business. Cash and securities segregated for regulatory and other purposes at fair value Cash and securities segregated for regulatory and other purposes at fair value Cash and securities segregated for regulatory and other purposes at fair value Securities purchased under agreements to resell and federal funds sold at fair value Securities purchased under agreements to resell and federal funds sold at fair value Securities purchased under agreement to resell and federal funds sold at fair value. Securities borrowed at fair value Securities borrowed at fair value Securities borrowed at fair value Receivables from customers and counterparties at fair value Receivables from customers and counterparties at fair value Receivables from customers and counterparties at fair value. Trading assets at fair value pledged as collateral Trading assets at fair value pledged as collateral Represents portion of trading assets, at fair value, that are pledged to counterparties as collateral. Deposits at fair value Deposits at fair value Deposits at fair value Securities loaned at fair value Securities loaned at fair value Securities loaned at fair value. Other secured financings at fair value Other secured financings at fair value Other secured financings at fair value Unsecured short-term borrowings, including the current portion of unsecured long-term borrowings, at fair value Unsecured short-term borrowings, including the current portion of unsecured long-term borrowings, at fair value Unsecured short-term borrowings, including the current portion of unsecured long-term borrowings, at fair value Unsecured Short Term Borrowings Including Current Portion Of Unsecured Long Term Borrowings At Fair Value Unsecured long-term borrowings at fair value Unsecured Longterm Borrowings At Fair Value Unsecured long-term borrowings at fair value Other liabilities and accrued expenses at fair value Other liabilities and accrued expenses at fair value Other liabilites and accrued expenses at fair value Other Liabilites And Accrued Expenses At Fair Value Preferred stock, par value Preferred Stock, Par or Stated Value Per Share Preferred stock, liquidation preference Liquidation preference The aggregate liquidation preference (or restrictions) of nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) that has a preference in involuntary liquidation considerably in excess of the par or stated value of the shares. Common stock, par value Common Stock, Par or Stated Value Per Share Common stock, shares authorized Common Stock, Shares Authorized Common stock, shares issued Common Stock, Shares, Issued, Total Common Stock, Shares, Issued Common stock, shares outstanding Common Stock, Shares, Outstanding, Beginning Balance Common Stock, Shares, Outstanding, Ending Balance Common Stock, Shares, Outstanding Par value Nonvoting common stock, par value Face amount or stated value of non voting common stock, per share. Nonvoting Common Stock Par Value Shares authorized Nonvoting common stock, shares authorized The maximum number of non voting common shares permitted to be issued by an entity's charter and bylaws. Nonvoting Shares Authorized Par value Treasury stock, par value Face amount or stated value of treasury stock, per share. Treasury Stock Par Value Treasury stock, shares Treasury Stock, Shares, Beginning Balance Treasury Stock, Shares, Ending Balance Treasury Stock, Shares Statement of Cash Flows [Abstract] Statements of Cash Flows [Abstract] Non-cash activities: Non Cash Activities Abstract Non Cash Activities Abstract. Debt assumed in connection with business acquisitions Noncash or Part Noncash Acquisition, Debt Assumed SUPPLEMENTAL DISCLOSURES: Supplemental Disclosures Abstract Supplemental Disclosures Abstract. Cash payments for income taxes, net of refunds Income Taxes Paid, Net, Total Income Taxes Paid, Net Cash payments for interest, net of capitalized interest Interest Paid, Net, Total Interest Paid, Net Cash and cash equivalents, end of period Cash and cash equivalents, beginning of period Includes currency on hand as well as demand deposits with banks or financial institutions. Cash equivalents include highly liquid overnight deposits held in the ordinary course of business. Cash and cash equivalents, end of year Cash and cash equivalents, beginning of year Cash And Cash Equivalents C F Net increase/(decrease) in cash and cash equivalents Cash and Cash Equivalents, Period Increase (Decrease), Total Cash and Cash Equivalents, Period Increase (Decrease) Cash settlement of share-based compensation Cash settlement of share-based compensation Aggregate amount paid by the entity during the period for cash settlement of share-based compensation. Cash settlement of share-based compensation Cash settlement of share-based compensation Cash Settlement Share Based Compensation C F Excess tax benefit related to share-based compensation Excess Tax Benefit from Share-based Compensation, Financing Activities Dividends and dividend equivalents paid on common stock, preferred stock and restricted stock units Payments of Dividends, Total Payments of Dividends Dividends and dividend equivalents paid on common stock, preferred stock and restricted stock units Common stock repurchased Payments for Repurchase of Common Stock Common stock repurchased Deposits, net Increase (Decrease) in Deposits, Total Increase (Decrease) in Deposits Derivative contracts with a financing element, net Derivative contracts with a financing element, net The net cash inflow / (outflow) associated with derivative contracts containing an other-than-insignificant financing element at inception. Preferred stock repurchased Payments for Repurchase of Preferred Stock and Preference Stock Preferred stock repurchased Repayment of unsecured long-term borrowings, including the current portion Repayment of unsecured long-term borrowings, including the current portion The cash outflow associated with the repayment of unsecured borrowings with original maturity dates in excess of one year. Repayment of unsecured long-term borrowings, including the current portion Repayment of unsecured long-term borrowings, including the current portion Repayment of unsecured long-term borrowings, including the current portion Repayment Of Unsecured Long Term Borrowings Including Current Portion Proceeds from issuance of unsecured long-term borrowings Proceeds from issuance of unsecured long-term borrowings The cash inflow from the issuance of unsecured borrowings with maturity dates in excess of one-year. Proceeds From Issuance Of Unsecured Long Term Borrowings Repayment of other secured financings (long-term), including the current portion Repayment of other secured financings (long-term), including the current portion The cash outflow associated with the repayment of other secured financings with original maturity dates in excess of one year. Repayment of other secured financings (long-term), including the current portion Repayment of other secured financings (long-term), including the current portion Repayment Of Other Secured Financings Long Term Including Current Portion Proceeds from issuance of other secured financings (long-term) Proceeds from issuance of other secured financings (long-term) The cash inflow from the issuance of other secured financings with maturity dates in excess of one year. Proceeds from issuance of other secured financings (long-term) Proceeds From Issuance Of Other Secured Financings Long Term Other secured financings (short-term), net Other secured financings (short-term), net Net cash inflow (outflow) associated with changes in the short-term portion of other secured financings. Other secured financings (short-term), net Other secured financings (short-term), net Other Secured Financings Short Term Net Unsecured short-term borrowings, net Unsecured short-term borrowings, net Net cash inflow (outflow) associated with changes in unsecured short-term borrowings. Unsecured Short Term Borrowings Net Unsecured short-term borrowings, net Cash flows from operating activities Income (Loss) from Continuing Operations, Including Portion Attributable to Noncontrolling Interest [Abstract] Depreciation and amortization Depreciation and amortization The aggregate net amount of depreciation and amortization recognized during an accounting period. As a noncash item, the net amount is added back to net income when calculating cash provided by (used in) operations using the indirect method. Depreciation And Amortization C F Share-based compensation Share-based Compensation, Total Share-based Compensation Changes in operating assets and liabilities Increase (Decrease) in Operating Capital [Abstract] Cash and securities segregated for regulatory and other purposes Cash and securities segregated for regulatory and other purposes The net change in cash and securities segregated for regulatory and other purposes Cash and securities segregated for regulatory and other purposes Change In Cash Securities Segregated Regulatory Other Purposes Net receivables from brokers, dealers and clearing organizations Net receivables from brokers, dealers and clearing organizations Changes during the reporting period in receivables from brokers, dealers and clearing organizations, net of payables to brokers, dealers and clearing organizations. Other, net Increase (Decrease) in Other Operating Assets and Liabilities, Net Other, net Trading liabilities, at fair value Increase (Decrease) in Trading Liabilities Trading assets, at fair value Trading assets, at fair value Change in trading assets, at fair value. Trading assets, at fair value Change In Trading Assets At Fair Value Securities sold under agreements to repurchase, net of securities purchased under agreements to resell and federal funds sold Securities sold under agreements to repurchase, net of securities purchased under agreements to resell and federal funds sold The net change in securities sold under agreements to repurchase, net of securities purchased under agreements to resell and federal funds sold. Securities borrowed, net of securities loaned Securities borrowed, net of securities loaned Changes during the reporting period in securities borrowed, net of securities loaned. Net payables to customers and counterparties Net payables to customers and counterparties The net change during the reporting period in payables to customers and counterparties, net of receivables from customers and counterparties. Net cash provided by/(used for) operating activities Net Cash Provided by (Used in) Operating Activities, Continuing Operations, Total Net Cash Provided by (Used in) Operating Activities, Continuing Operations Cash flows from investing activities Net Cash Provided by (Used in) Investing Activities, Continuing Operations [Abstract] Net cash provided by/(used for) investing activities Net Cash Provided by (Used in) Investing Activities, Continuing Operations, Total Net Cash Provided by (Used in) Investing Activities, Continuing Operations Proceeds from sales of available-for-sale securities Proceeds from sales of available-for-sale securities Proceeds from Sale of Available-for-sale Securities Purchase of available-for-sale securities Payments to Acquire Available-for-sale Securities, Total Payments to Acquire Available-for-sale Securities Purchase of available-for-sale securities Proceeds from sales of investments Proceeds from Sale, Maturity and Collections of Investments, Total Proceeds from Sale, Maturity and Collections of Investments Business acquisitions, net of cash acquired Payments to Acquire Businesses, Net of Cash Acquired, Total Payments to Acquire Businesses, Net of Cash Acquired Business acquisitions, net of cash acquired Proceeds from sales of property, leasehold improvements and equipment Proceeds from sales of property, leasehold improvements and equipment The cash inflow from the sale of property, leasehold improvements and equipment that are used in the normal conduct of business and not intended for resale. Purchase of property, leasehold improvements and equipment Purchase of property, leasehold improvements and equipment The cash outflow associated with the acquisition of property, leasehold improvements and equipment that are used in the normal conduct of business and not intended for resale. Purchase of property, leasehold improvements and equipment Statement [Table] Statement [Line Items] Consolidated Statements of Comprehensive Income Statement of Income and Comprehensive Income [Abstract] Other Comprehensive Income, Foreign Currency Transaction and Translation Adjustment, Net of Tax Currency translation adjustment, net of tax Other Comprehensive Income, Foreign Currency Transaction and Translation Adjustment, Net of Tax, Total Other Comprehensive Income, Defined Benefit Plans Adjustment, Net of Tax Pension and postretirement liability adjustments, net of tax Other Comprehensive Income, Defined Benefit Plans Adjustment, Net of Tax, Total Other Comprehensive Income, Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax Net unrealized gains/(losses) on available-for-sale securities, net of tax Net unrealized gains/(losses) on available-for-sale securities, net of tax Comprehensive Income, Net of Tax, Attributable to Parent Comprehensive income/(loss) Comprehensive income/(loss) Statement, Equity Components [Axis] Equity Component [Domain] Parent [Member] Common Stock Common stock, par value $0.01 per share Preferred Stock Preferred stock Additional paid-in capital Additional paid-in capital Additional paid-in capital Common stock held in treasury, at cost Common stock held in treasury, at cost Retained earnings Retained earnings Accumulated other comprehensive income/(loss) Accumulated other comprehensive income/(loss) Stock Issued During Period, Value, New Issues Issued Issuance of common stock Stock Issued During Period, Value, Stock Options Exercised Exercise of employee stock options Treasury Stock, Value, Acquired, Cost Method Repurchased Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs Preferred and common stock issuance costs Adjustments to Additional Paid in Capital, Tax Effect from Share-based Compensation Excess net tax benefit/(provision) related to share-based compensation Cumulative Effect of Initial Adoption of FIN 48 Cumulative effect from adoption of amended principles related to accounting for uncertainty in income taxes Adjustments, Noncash Items, to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Non-cash items included in net earnings/(loss) Net Cash Provided by (Used in) Financing Activities, Continuing Operations [Abstract] Cash flows from financing activities Net Cash Provided by (Used in) Financing Activities, Continuing Operations Net cash provided by/(used for) financing activities Significant Accounting Policies [Text Block] Significant Accounting Policies Short-term Debt [Text Block] Short-Term Borrowings Short-Term Borrowings: Period End Long-term Debt [Text Block] Long-Term Borrowings Income Tax Disclosure [Text Block] Income Taxes Earnings Per Share [Text Block] Earnings Per Common Share Segment Reporting Disclosure [Text Block] Business Segments Fair Value Disclosures [Text Block] Financial Instruments Accretion Preferred stock accretion Preferred stock accretion Accretion Preferred Stock Accretion Issuance and amortization of restricted stock units and employee stock options Issuance and amortization of restricted stock units and employee stock options Issuance and amortization of restricted stock units and employee stock options. Delivery of common stock underlying restricted stock units Delivery of common stock underlying restricted stock units Delivery of common stock underlying restricted stock units. Delivery Of Common Stock Underlying Restricted Stock Units Forfeiture of restricted stock units and employee stock options Forfeiture of restricted stock units and employee stock options Forfeiture of restricted stock units and employee stock options Issuance of common stock warrants Issuance of common stock warrants Increase in additional paid in capital due to warrants issued during the period. Cancellation of restricted stock units in satisfaction of withholding tax requirements Cancellation of restricted stock units in satisfaction of withholding tax requirements Cancellation of restricted stock units in satisfaction of withholding tax requirements Cash settlement of share-based compensation Cash settlement of share-based compensation The aggregate reduction in equity during the period related to cash settlement of share-based compensation. Cash settlement of share-based compensation Cash Settlement Of Share Based Compensation Dividends and dividend equivalents declared on common stock and restricted stock units Dividends and dividend equivalents declared on common stock and restricted stock units Dividends and dividend equivalents declared on common stock and restricted stock units Dividends And Dividend Equivalents Declared On Common Stock And Restricted Stockunits Dividends declared on preferred stock Dividends declared on preferred stock Dividend and dividend equivalents declared for preferred stock. Reissued Reissued Carrying value of treasury stock reissued during the period. Upon reissuance, common and preferred stock are outstanding. Financial Instruments [Abstract] Financial Instruments [Abstract] Financial Instruments Abstract Securitization Activities and Variable Interest Entities [Abstract] Securitization Activities and Variable Interest Entities [Abstract] Securitization Activities and Variable Interest Entities. Document and Company Information [Abstract] Document and Company Information [Abstract] Document and Company Information. Description of Business Description of Business Description of Business. Description Of Business [Text Block] Securitization Activities and Variable Interest Entities Securitization Activities and Variable Interest Entities Securitization Activities and Variable Interest Entities. Securitization Activities Variable Interest Entities [Text Block] Deposits Deposits Text Block This element may be used as a single block of text to encapsulate the disclosure for deposits including data and tables. Includes disclosure of commitments, contingencies and guarantees. This is used as a single block of text to encapsulate the entire disclosure including data and tables. Commitments, Contingencies and Guarantees Commitments, Contingencies and Guarantees Commitments Contingencies Guarantees [Text Block] Shareholders Equity Text Block Disclosures related to accounts comprising shareholders' equity, including accumulated other comprehensive income. Includes: (1) balance for each classification of accumulated other comprehensive income and total amount of accumulated other comprehensive income, (2) transactions in common and preferred stock during the reporting period, (3) dividends declared, (4) share repurchase program and (5) significant terms and amounts related to classes of preferred stock issued and outstanding. Shareholders' Equity Discloses the aggregate amount of goodwill and a description of intangible assets. For amortizable intangible assets includes (a) the carrying amount and the weighted-average amortization period and (b) total and by major class, the gross carrying amount and accumulated amortization and the estimated aggregate amortization expense for each of the five succeeding fiscal years. For goodwill includes, in total and for each reportable segment, the carrying amount of goodwill. Goodwill And Identifiable Intangible Assets Text Block Goodwill and Identifiable Intangible Assets Includes disclosure of other assets and other liabilities not separately disclosed. This is used as a single block of text to encapsulate the entire disclosure including data and tables. Other Assets Other Liabilities text Block Other Assets and Other Liabilities This element is used to disclose transactions with nonconsolidated affiliated investment funds. Transactions With Affiliated Funds Text Block Transactions with Affiliated Funds Interest Income and Interest Expense Interest Income and Interest Expense Disclosure [Text Block] Description of Business [Abstract] Description of Business [Abstract] Description of Business Abstract Commitments Contingencies and Guarantees [Abstract] Commitments, Contingencies and Guarantees [Abstract] Commitments Contingencies and Guarantees Abstract Shareholders Equity [Abstract] Shareholders' Equity [Abstract] Shareholders Equity Abstract Goodwill and Identifiable Intangible Assets [Abstract] Goodwill and Identifiable Intangible Assets [Abstract] Goodwill and Identifiable Intangible Assets Abstract Other Assets and Other Liabilities [Abstract] Other Assets and Other Liabilities [Abstract] Other Assets and Other Liabilities Abstract. Transactions with Affiliated Funds [Abstract] Transactions with Affiliated Funds [Abstract] Transactions with Affiliated Funds Abstract. Business Segments [Abstract] Business Segments [Abstract] Business Segments Abstract. Entity Registrant Name Entity Central Index Key Document Type Document Period End Date Amendment Flag Current Fiscal Year End Date Entity Well-known Seasoned Issuer Entity Voluntary Filers Entity Current Reporting Status Entity Filer Category Entity Public Float Entity Common Stock, Shares Outstanding