Accounting Standard Update on Troubled Debt Restructurings [Member] The impact from a change in accounting for Troubled Debt Restructurings due to ASU No. 2011-02, Creditor's Determination of whether a Restructuring is a Troubled Debt Restructuring. Troubled Debt Restructurings (TDRs) PLEDGED ASSETS, COLLATERAL, COMMITMENTS AND GUARANTEES GUARANTEES AND COMMITMENTS Abu Dhabi Investment Authority [Member] An arbitration action brought by the Abu Dhabi Investment Authority. Arbitration brought by the Abu Dhabi Investment Authority Accounting Standard Update on Embedded Credit Derivative [Member] The impact from a change in accounting for embedded credit derivatives due to ASU 2010-11, Scope Exception Related to Embedded Credit Derivatives, for which the entity selected to account for beneficial interests issued by securitization vehicles under the fair value option at transition on July 1, 2010. Embedded Credit Derivatives Adam Capital Trust I I I [Member] This element represents Adam Capital Trust III, a trust security with distributions guaranteed by Citigroup. Adam Capital Trust III Award Type [Axis] Adam Statutory Trust I I I [Member] This element represents Adam Statutory Trust III, a trust security with distributions guaranteed by Citigroup. Adam Statutory Trust III Adam Statutory Trust I V [Member] This element represents Adam Statutory Trust IV, a trust security with distributions guaranteed by Citigroup. Adam Statutory Trust IV Adam Statutory Trust V [Member] This element represents Adam Statutory Trust V, a trust security with distributions guaranteed by Citigroup. Adam Statutory Trust V Loans Modified under Accounting Standard Update Represents the amount of loans modified under the Accounting Standard Update (ASU). Loans modified under the ASU Amendment Description Aggregate Exercise Price of Call Option One Aggregate exercise price of option one The exercise (or strike) price stated in the contract. The fixed price at which the call option holder can purchase or purchased the underlying security one. Amendment Flag Reserves Released for Implementing Prohibition on Valuation Adjustments Represents the amount of reserves released as a result of implementing the prohibition on valuation adjustments. Reserves released as a result of implementing the prohibition on valuation adjustments Aggregate Exercise Price of Call Option Two Aggregate exercise price of option two The exercise (or strike) price stated in the contract. The fixed price at which the call option holder can purchase or purchased the underlying security two. This element represents airplanes, ships and other assets. Airplanes Ships and Other Assets [Member] Airplanes, ships and other assets Investment [Axis] Akbank [Member] Represents the acquired business of Akbank. Akbank Investment [Domain] Morgan Stanley Smith Barney Joint Venture [Member] Morgan Stanley Smith Barney joint venture Represents the equity method investment in Morgan Stanley Smith Barney joint venture (MSSB). Allied Irish Bank Litigation [Member] The risk of loss associated with litigation related to fraudulent and fictitious trades entered into by one of the entity's subsidiary's brokers. Allied Irish Bank Litigation ALLOWANCE FOR CREDIT LOSSES Represents the allowance for credit losses relating to letters of credit and unfunded lending commitments. Allowance for Credit Losses Related to Letters of Credit and Unfunded Lending Commitments Allowance for credit losses relating to letters of credit and unfunded lending commitments Bankcard and Private Label Merchant Processing Services, Maximum Potential Contingent Liability Represents the entity's maximum potential contingent liability related to both bankcard and private-label merchant processing services, which is estimated to be the total volume of credit card transactions that meet the requirements to be valid chargeback transactions at any given time. Maximum potential contingent liability related to bankcard and private-label merchant processing services Allowance for Loan and Lease Losses Net Losses Recoveries Reflects the amount of loans and leases that have been removed or charged off from both loan receivables and the reserve for credit losses, net of any recoveries of previously removed or charged off credit losses. Net credit losses (NCLs) Allowance for Unfunded Lending Commitments [Policy Text Block] Describes an entity's accounting policy for allowance for unfunded lending commitments. Allowance for Unfunded Lending Commitments Alt A [Member] Debt securities collateralized by real estate mortgage loans (mortgages) that are classified as Alt-A mortgages (the risk profile falls between prime and subprime). Alt-A Alternative investment funds, carried at cost Represents the carrying value of funds that are carried at cost. Alternative Investment Funds Carried at Cost Carrying Value Fund Assets Valued by Net Asset Values Provided by Third Party Asset Managers Amount of fund assets valued using net asset values provided by third party asset managers which is included in the total fair value amount of alternative investment funds The amount of fund assets that are valued using NAV (net asset value) provided by third party asset managers is included in total alternative investment fund fair value. Alternative Investment Funds Sale Price Alternative investment funds, estimated sales price Represents the estimated sales price of alternative investment funds. Amount of Increase in Risk Weighted Assets Increase in risk-weighted assets The increase in risk-weighted assets due to the inclusion of sold assets for the credit card securitization trusts in the risk-weighted assets for purposes of calculating risk-based capital ratios. Current Fiscal Year End Date Amount under Citi Short-term Modification Programs The dollar amount of loans included under Citi's short-term modification programs at the end of the period. Dollar amount of loans included under Citi's short-term modification programs Amounts Payable to Trusts on Credit Card Securitizations Amounts payable to trusts This element represents other amounts recorded on the balance sheet related to interests retained in the credit card receivables trusts for the purpose of amounts payable to trusts. Asia [Member] This element represents the Asia geographic segment. Asia Asia Regional Consumer Banking [Member] This element represents the Asian Regional Consumer Banking reporting unit of the entity. Asia Regional Consumer Banking This element represents the held to maturity investments other than mortgage-backed securities and state and municipal securities. Asset Backed and Other Debt Securities [Member] All Other Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses Gross unrealized losses of available for sale securities that have been in an unrealized loss position for less than twelve months Asset Management Business [Member] This element represents the discontinued operations of asset management business. Asset Management business Assets Impacted by Change in Accounting [Axis] The types of asset accounts impacted by the adoption of a new accounting pronouncement or a change in accounting principle. Gross realized investment losses Available-for-sale Securities, Realized Losses, Excluding Other than Temporary Impairments Assets Pledged as Collateral for Bank Loans, Fair Value Disclosure As collateral on bank loans This element represents the fair value of other assets pledged as collateral for bank loans. Assets Pledged as Collateral for Securities Borrowed, Fair Value Disclosure This element represents the fair value of collateral for securities borrowed for approximately equivalent value. As collateral for securities borrowed for approximately equivalent value Assets Pledged as Collateral for Securities Loaned, Fair Value Disclosure For securities loaned This element represents the fair value of other assets pledged as collateral for securities loaned. Assets Pledged as Collateral Other, Fair Value Disclosure Other This element represents the fair value of assets pledged as collateral for other borrowings not separately reported. Document Period End Date Assets Unconsolidated Government Guaranteed Loan Conduit Assets held by unconsolidated government guaranteed loan conduit This element represents the amount of assets held in the unconsolidated government-guaranteed loan conduit. Associates First Capital Corporation [Member] A wholly owned subsidiary of Citigroup. Citigroup has issued a full and unconditional guarantee of the outstanding long-term debt securities and commercial paper of Associates. In addition, Citigroup guaranteed various debt obligations of Citigroup Finance Canada Inc. (CFCI), a wholly owned subsidiary of Associates. CFCI continues to issue debt in the Canadian market supported by a Citigroup guarantee. Associates are the immediate parent company of CCC. Associates Available-for-sale Securities [Member] Total securities AFS AFS debt securities Assumption for Fair Value of Interests Continued to be Held by Transferor Servicing Assets or Liabilities Weighted Average Expected Credit Losses Represents the rate at which principal will not be repaid on securitized financial assets. This is used as a key input and assumption in measuring the fair value of assets or liabilities that relate to a transferor's continuing involvement (including interests that continue to be held by the transferor and servicing assets or servicing liabilities), if any, as of the date of the latest statement of financial position presented. Weighted average constant prepayment rate, date of sale or securitization (as a percent) Assumption for Fair Value on Securitization Date of Interests Continued to be Held by Transferor Servicing Assets or Liabilities Weighted Average Prepayment Speed The weighted average estimated speed of prepayments of principal on financial assets. This is used as a key assumption in measuring the fair value of assets obtained or liabilities incurred that relate to a transferor's continuing involvement, if any, at the time of securitization, asset-backed financing, or similar transfer. Weighted average constant prepayment rate, date of sale or securitization (as a percent) Maturity period of auction rate securities, period one The period one interval of short maturity auction rate securities used for valuation, based on the observation of auction market prices. The valuation was done based on the observation of auction market prices due to the short maturity period. Auction Market Securities Series Rate Setting Interval Period One Auction Market Securities Series Rate Setting Interval Period Three Maturity period of auction rate securities, period three The period three interval of short maturity auction rate securities used for valuation, based on the observation of auction market prices. The valuation was done based on the observation of auction market prices due to the short maturity period. Auction Market Securities Series Rate Setting Interval Period Two Maturity period of auction rate securities, period two The period two interval of short maturity auction rate securities used for valuation, based on the observation of auction market prices. The valuation was done based on the observation of auction market prices due to the short maturity period. Auction Rate Securities Litigation [Member] The risk of loss associated with litigation related to the sale of auction rate securities products by the entity. Auction Rate Securities-Related Litigation and Other Matters Derivative, Notional Amount Derivative notionals Auction Rate Securities Outstanding in Capacity of Primary Dealer Amount of auction rate securities in which Citigroup acted in the capacity of primary dealer This element represents the value of auction rate securities for which the entity acted in the capacity of primary dealer. Entity [Domain] Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses Total gross unrealized losses of available for sale securities that have been in an unrealized loss position Available for Sale Securities Continuous Unrealized Loss Position Available-for-sale Securities Continuous Unrealized Loss Position Fair Value and Aggregate Losses [Abstract] Available-for-sale Securities Debt Securities [Member] This element represents the investments in available-for-sale debt securities. Total debt securities AFS Available-for-sale Securities Equity Securities [Member] This element represents investments in marketable equity securities which are categorized as available-for-sale securities. Marketable equity securities AFS Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses Gross unrealized losses of available for sale securities that have been in an unrealized loss position for twelve months or longer This element represents the balance sheet line items. Balance Sheet Line Item [Domain] Bank [Member] This element represents the banking industry. Bank The amount of setoff that the entity took with respect to clearing obligations, which is the subject of bankruptcy claims. Setoff Citibank N.A. took with respect to certain clearing obligations of LBI Bankruptcy Claim Clearing Obligations Setoff Additional Deposits Represents the amount of additional deposits currently held by Citibank and its affiliates. Additional deposits Proprietary Assets and Cash of Bankrupt Entity Represents the amount of proprietary assets and cash of bankrupt entity which is held by Citigroup as a custodian. Proprietary assets and cash of LBIE Available-for-sale Securities, Gross Realized Gain (Loss), Excluding Other than Temporary Impairments Realized gains (losses) on sales of investments, net Net realized gains The amount of deposits which LBHI made with the entity prior to its collapse, which is the subject of bankruptcy claims. Deposits made by LBI prior to collapse Bankruptcy Claim Deposits Broker and Asset Management [Member] This element represents the Brokerage and Asset Management reporting unit of the entity. Brokerage and Asset Management Broker Dealer [Member] This element represents the broker-dealer sector. Broker-dealer Brokerage and Asset Management [Member] This element represents the brokerage and asset management business segment. Brokerage and Asset Management Brokerage Payables Amount due to customer, broker-dealers, and clearing organizations related to the entity's brokerage activities and operations. The amount due to broker-dealers and clearing organizations may include amounts payable for securities failed to receive, certain deposits received for securities loaned, 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. Brokerage payables Total brokerage payable Brokerage Receivables Amount due from customers, brokers, dealers, and clearing organizations related to the entity's brokerage activities and operations. The amount due from customers are for fees and charges arising from transactions related to brokerage activities and operations. The amount receivable from brokers, dealers, and clearing organizations may include receivables for securities borrowed, open transactions, good faith and margin deposits, commissions and floor brokerage items; and would also include cash and securities [guarantee] on deposit with [commodities] clearing organizations and other entities which provide services necessary to operations of the Company. Brokerage receivables Total brokerage receivable Losses Resulting from Options Trades Referencing Portfolio of Hedge Funds Represents the amount of losses resulting from certain options trades referencing a portfolio of hedge funds. Losses resulting from certain options trades referencing a portfolio of hedge funds Available-for-sale Securities, Gross Unrealized Gains Gross unrealized gains recognized in AOCI Gross unrealized gains Business Disposal Third Party Percentage of Ownership in Disposed Entity after Disposal by Reporting Entity Represents a third party's ownership interest in an entity of which the reporting entity is disposing, after the reporting entity's disposal. Sumitomo Trust's percent of ownership in Nikko Asset Management after disposal by Citigroup C I I P Bankruptcy Litigation [Member] The risk of loss associated with an attempt to declare Companhia Industrial de Instruments de Precisao (CIIP) bankrupt. CIIP bankruptcy C K I [Member] This details pertaining to CKI. CKI CHKL [Member] CHKL This details pertaining to CHKL. Capital Accumulation Program Awards [Member] This element represents the Capital Accumulation Program (CAP). Capital Accumulation Program Awards (CAP) Carrying Amount of Certain Credit Related Loans Carrying amount of certain credit related trading assets or VIEs loans as of the balance sheet date for which the fair value option was elected. Carrying amount reported on the Consolidated Balance Sheet Cash and Due from Banks Cash Flow Impact Cash and due from banks at beginning of period Cash and due from banks at end of period For banks and other depository institutions: Includes cash on hand (currency and coin), cash items in process of collection, noninterest bearing deposits due from other financial institutions (including corporate credit unions), and balances with the Federal Reserve Banks, Federal Home Loan Banks and central banks. Cash and Due from Banks Due from Affiliates Subsidiaries and Holding Companies Cash and due from banks-intercompany Represents the portion of cash on hand and due from banks of the affiliates, subsidiaries and the holding company. Cash and Securities Segregated under Securities Exchange Commission and Other Regulation, Fair Value Disclosure Cash segregated under federal and other brokerage regulations included in cash and due from banks This element represents the fair value of assets pledged as collateral that are covered under federal and other brokerage regulations. Cash Flows [Abstract] Cash Flows Cash Flows [Policy Text Block] Describes an entity's accounting policy for cash flows, including risk management activities and capitalized software. Cash Flows Cash paid during the year for: Cash Paid During the Year for [Abstract] Certain Consumer Loans [Member] Represents certain consumer loans receivable of the reporting entity including consumer loans of consolidated VIEs. Consumer loans VIE Consumer loans Certain Corporate Loans [Member] Represents certain corporate loan receivable of the reporting entity including corporate loans of consolidated VIEs. Corporate loans VIE Corporate loans Certain Equity Method Investments [Member] Represents certain equity method investments of the reporting entity. Certain equity method investments Certain Hybrid Financial Instruments Related to Long-term Borrowings [Member] Represents certain hybrid financial instruments of the reporting entity categorized as long-term borrowings. Certain hybrid financial instruments (Long-term borrowings) Certain Hybrid Financial Instruments Related to Short-term Borrowings [Member] Represents certain hybrid financial instruments of the reporting entity categorized as short-term borrowings. Certain hybrid financial instruments (Short-term borrowings) Certain Interest Bearing Deposits Related Hybrid Financial Instruments [Member] Represents hybrid financial instruments related to interest bearing deposits of the reporting entity. Certain hybrid financial instruments (Interest-bearing deposits) Certain Investments in Private Equity and Real Estate Ventures [Member] Represents certain investments in private equity and real estate ventures of the reporting entity. Certain investments in private equity and real estate ventures Certain Loan Related Credit Products [Member] Represents certain credit products of the reporting entity categorized as loans receivable. Certain credit products (Loans) Certain Loan Related Hybrid Financial Instruments [Member] Represents certain hybrid financial instruments of the reporting entity categorized as loans receivable. Certain hybrid financial instruments (Loans) Certain Mortgage Loans [Member] Represents certain mortgage loans of the reporting entity. Certain mortgage loans held for sale Certain mortgage loans (long-term debts) Certain Non Structured Liabilities Related to Long-term Borrowings [Member] Represents certain non-structured liabilities of the reporting entity categorized as long-term borrowings. Long-term debt: Certain Non Structured Liabilities Related to Short-term Borrowings [Member] Represents certain non-structured liabilities of the reporting entity categorized as short-term borrowings. Short-term borrowings: Certain Noncollateralized Short-term Borrowings [Member] Represents certain noncollateralized short-term borrowings of the reporting entity. Certain noncollateralized short-term borrowings Certain Structured Liabilities Related to Interest Bearing Deposits [Member] Represents certain structured liabilities of the reporting entity categorized as interest bearing deposits. Certain structured liabilities (Interest-bearing deposits) Certain Structured Liabilities Related to Long-term Borrowings [Member] Represents certain structured liabilities of the reporting entity categorized as long-term borrowings. Certain structured liabilities (Long-term borrowings) Certain Structured Liabilities Related to Short-term Borrowings [Member] Represents certain structured liabilities of the reporting entity categorized as short-term borrowings. Certain structured liabilities (Short-term borrowings) Certain Trading Account Asset Related Credit Products [Member] Represents certain credit products of the reporting entity categorized as trading account assets. Certain credit products (Trading account assets) Certain Trading Account Asset Related Hybrid Financial Instruments [Member] Represents certain hybrid financial instruments of the reporting entity categorized as trading account assets. Certain hybrid financial instruments (Trading account assets) Certain Trading Account Liabilities Related Hybrid Financial Instruments [Member] Represents certain hybrid financial instruments of the reporting entity categorized as trading account liabilities. Certain hybrid financial instruments (Trading account liabilities) Entity Well-known Seasoned Issuer Change in Accumulated Other Comprehensive Income (Loss) Due to Amortization and Other Represents the amount of change in Accumulated other comprehensive income (loss) due to amortization and other. Net amortizations Entity Voluntary Filers Change in Accumulated Other Comprehensive Income (Loss) Due to Deferred Taxes Represents the amount of change in Accumulated other comprehensive income (loss) due to deferred taxes. Change in deferred taxes, net Entity Current Reporting Status Statement. Change in Each Component of Accumulated Other Comprehensive Income (Loss) [Line Items] Entity Filer Category Assumptions for U.S. Housing Price Valuations Changes in U.S. Housing Prices [Abstract] Entity Public Float Checking Related [Member] This element represents fees and commissions earned from checking related activity. Checking-related Entity Registrant Name Citi Financial Credit Company [Member] An indirect wholly owned subsidiary of Citigroup. CCC is a wholly owned subsidiary of Associates. Citigroup has issued a full and unconditional guarantee of the outstanding indebtedness of CCC. CitiFinancial Credit Company (CCC) Entity Central Index Key Citi Holdings Segment [Member] This element represents the Citi Holdings business segment. Citi Holdings Represents the disposed of business of Citi Street. Citi Street [Member] CitiStreet Citibank Broadway Credit Card Trust [Member] This element represents the Broadway Credit Card Trust, which is part of Citi Holdings. Citibank Broadway Credit Card Trust (Broadway Trust) Citibank Credit Card Master Trust And O M N I Master Trust [Member] This element represents the aggregate of the Citibank Credit Card Master Trust and the Citibank OMNI Master Trust. Citibank Credit Card Master Trust (Master Trust) and OMNI Master Trust (Omni Trust) Entity Common Stock, Shares Outstanding Citibank Credit Card Master Trust [Member] This element represents the Citibank Credit Card Master Trust, which is part of Citicorp. Citibank Credit Card Master Trust (Master Trust) Citibank O M N I Master Trust [Member] This element represents the Citibank OMNI Master Trust, which is substantially part of Citicorp. Citibank OMNI Master Trust (Omni Trust) Receivable Type [Axis] Citicorp Segment [Member] This element represents the Citicorp business segment. Citicorp Citigroup Capital I I I [Member] This element represents Citigroup Capital III, a trust security with distributions guaranteed by Citigroup. Citigroup Capital III Citigroup Capital I X [Member] This element represents Citigroup Capital IX, a trust security with distributions guaranteed by Citigroup. Citigroup Capital IX Citigroup Capital VIII Citigroup Capital V I I I [Member] This element represents Citigroup Capital VIII, a trust security with distributions guaranteed by Citigroup. Citigroup Capital V I I [Member] This element represents Citigroup Capital VII, a trust security with distributions guaranteed by Citigroup. Citigroup Capital VII Citigroup Capital X I I I [Member] This element represents Citigroup Capital XIII, a trust security with distributions guaranteed by Citigroup. Citigroup Capital XIII Citigroup Capital X I I [Member] This element represents Citigroup Capital XII, a trust security with distributions guaranteed by Citigroup. Citigroup Capital XII Citigroup Capital X I [Member] This element represents Citigroup Capital XI, a trust security with distributions guaranteed by Citigroup. Citigroup Capital XI Citigroup Capital X I V [Member] This element represents Citigroup Capital XIV, a trust security with distributions guaranteed by Citigroup. Citigroup Capital XIV Citigroup Capital X I X [Member] This element represents Citigroup Capital XIX, a trust security with distributions guaranteed by Citigroup. Citigroup Capital XIX Citigroup Capital X [Member] This element represents Citigroup Capital X, a trust security with distributions guaranteed by Citigroup. Citigroup Capital X Citigroup Capital X V I I I [Member] This element represents Citigroup Capital XVIII, a trust security with distributions guaranteed by Citigroup. Citigroup Capital XVIII Citigroup Capital X V I I [Member] This element represents Citigroup Capital XVII, a trust security with distributions guaranteed by Citigroup. Citigroup Capital XVII Citigroup Capital X V I [Member] This element represents Citigroup Capital XVI, a trust security with distributions guaranteed by Citigroup. Citigroup Capital XVI Citigroup Capital X V [Member] This element represents Citigroup Capital XV, a trust security with distributions guaranteed by Citigroup. Citigroup Capital XV Document Fiscal Year Focus Citigroup Capital X X I [Member] This element represents Citigroup Capital XXI, a trust security with distributions guaranteed by Citigroup. Citigroup Capital XXI Document Fiscal Period Focus Citigroup Capital X X [Member] This element represents Citigroup Capital XX, a trust security with distributions guaranteed by Citigroup. Citigroup Capital XX Citigroup Capital X X X I I I [Member] This element represents Citigroup Capital XXXIII, a trust security with distributions guaranteed by Citigroup. Citigroup Capital XXXIII Citigroup Capital X X X I I [Member] This element represents Citigroup Capital XXXII, a trust security with distributions guaranteed by Citigroup. Citigroup Capital trust XXXII Citigroup Capital X X X I [Member] This element represents Citigroup Capital XXXI, a trust security with distributions guaranteed by Citigroup. Citigroup Capital XXXI Citigroup Capital X X X [Member] This element represents Citigroup Capital XXX, a trust security with distributions guaranteed by Citigroup. Citigroup Capital trust XXX Citigroup Funding, Inc. [Member] CFI is a first-tier subsidiary of Citigroup, which issues commercial paper, medium-term notes and structured equity-linked and credit-linked notes, all of which are guaranteed by Citigroup. Citigroup Funding Inc. (CFI) Citigroup Global Markets Holdings Inc [Member] Citigroup guarantees various debt obligations of CGMHI as well as all of the outstanding debt obligations under CGMHI's publicly issued debt. Citigroup Global Markets Holdings Inc. (CGMHI) Citigroup Global Markets Limited [Member] This element represents the Citigroup Global Markets Limited, a subsidiary of the entity. Citigroup Global Markets Limited Citigroup, Inc. Bond Litigation [Member] The consolidation of class actions against the entity alleging violations of the Securities Act of 1933. In Re Citigroup Inc. Bond Litigation In Re Citigroup Inc. Securities Litigation Citigroup, Inc. Securities Litigation [Member] The consolidation of class actions against the entity alleging violations of the Securities Exchange Act of 1934. Citigroup Technology Services Limited [Member] Represents the disposed of business of Citigroup Technology Services Limited. Citigroup Technology Services Limited Legal Entity [Axis] Citigroup's Smith Barney Quilter and Australia Private Client Networks Businesses [Member] Represents information pertaining to the reporting entity's Smith Barney, Quilter and Australia private client networks businesses. Citigroup's Smith Barney, Quilter and Australia private client networks businesses Document Type Represents information pertaining to the reporting entity's Financial Institutions (FI) and Diners Club North America credit card businesses. Citigroup Sold its Financial Institutions FI and Diners Club North America Credit Card [Member] Citigroup's FI and Diners Club North America credit card businesses Citigroup Sold its Canadian Master Card Business and U S Retail Sales Finance Portfolio [Member] Represents information pertaining to the reporting entity's Canadian MasterCard business and U.S. retail sales finance portfolio. Citigroup's Canadian MasterCard business and U.S. retail sales finance portfolio Classification of Other Securitization Details Classification of Other Securitization Details [Line Items] Classification of Securitizations Classification of Securitizations [Line Items] Fair Value of Capitalized Mortgage Servicing Rights Fair value of capitalized mortgage servicing rights Represents the fair value of capitalized mortgage servicing rights. Term Notes Issued to Multiseller Commercial Paper Conduits The par value of liabilities of the credit card receivables securitization trust related to term notes issued to multi-seller commercial paper conduits. Term notes issued to multi-seller commercial paper conduits Client Intermediation [Member] This element represents a range of transactions (including credit-linked and equity-linked notes) designed to provide specified returns based on the underlying security, referenced asset or index to the investors. Client intermediation Collateral Held on Reverse Repurchase Agreements to Clearing Organizations or Segregated under Securities Exchange Commission Regulation, Fair Value Disclosure To clearing organizations or segregated under securities laws and regulations This element represents the fair value of assets pledged as collateral to clearing organizations or segregated under securities' laws and regulations. Collateralized Personal Loans [Member] Securities collateralized by a pool of personal loans. Personal Loan Securitizations Represents the commercial and industrial loan. Commercial and Industrial [Member] Commercial and industrial Commercial and Other Consumer Loan Commitments [Member] Commercial and other consumer loan commitments include overdraft and liquidity facilities, as well as commercial commitments to make or purchase loans, to purchase third-party receivables, to provide note issuance or revolving underwriting facilities and to invest in the form of equity. Commercial and other consumer loan commitments Other Commitments and Contingencies [Member] Other commitments and contingencies Other commitments and contingencies include all other transactions related to commitments and contingencies not separately disclosed in the report. Commercial and other consumer loan commitments, original maturity of less than one year Represents the amount of outstanding commercial and other consumer loan commitments with an original maturity of less than one year. Commercial and Other Consumer Loan Commitments Original Maturity of Less than One Year Commercial and Similar Letter of Credit [Member] Represents the irrevocable undertaking to guarantee payment of specified commercial and similar obligation if defined events occur or fail to occur. Commercial and similar letters of credit Commercial Market Loans [Member] Represents the commercial market loan. Commercial market loans Commercial [Member] This element represents the investments in commercial securities. Commercial Commercial real estate Commercial Paper Issuance Description of Variable Rate Basis Commercial paper issuance, description of variable rate basis The reference rate for the specified maximum variable rate of interest related to the issuance of commercial paper under the terms of the liquidity puts. Commercial Paper Issuance Limit on L I B O R Variable Rate Commercial paper issuance, limit on LIBOR variable rate (in basis points) Represents the basis points added to the reference rate to compute the specified maximum variable rate of interest related to the issuance of commercial paper under the terms of the liquidity puts. Commercial paper purchased subject to liquidity puts The amount of commercial paper purchased subject to liquidity puts. Commercial Paper Purchased Subject to Liquidity Puts Commercial Paper Third Party Conduit [Member] This element represents the third-party commercial paper conduits. Third-party commercial paper conduits Commercial Paper Trust Liabilities The par value of liabilities of the credit card receivables securitization trust related to commercial paper. Commercial paper Commercial Paper under Commercial Paper Funding Facility Liabilities funded through Federal Reserve's Commercial Paper Funding Facility (CPFF) The amount of liabilities funded through the Federal Reserve's Commercial Paper Funding Facility. Commercial Real Estate Construction and Land Development [Member] Commercial real estate, construction and land development include unused portions of commitments to extend credit for the purpose of financing commercial and multifamily residential properties as well as land development projects. Both secured-by-real-estate and unsecured commitments are included, as well as undistributed loan proceeds, where there is an obligation to advance for construction progress payments. Commercial real estate, construction and land development. COMMISSIONS AND FEES Commissions and Fees [Text Block] Disclosure relating to commission fee revenue earned by the entity. COMMISSIONS AND FEES Commodity and Other Contract [Member] Derivative instrument whose primary underlying risk is tied to commodity prices, as well as any other derivative contract not defined elsewhere in the taxonomy. Primarily includes revenues from crude oil, refined oil products, natural gas, and other commodities trades. Commodity and other contracts Common Shareholders' Equity [Member] The amount of stockholders equity attributable to common shareholders. Citigroup common stockholders' equity This element represents the common stock closing price per share. Common stock closing price (in dollars per share) Common Stock Closing Price Per Share Number of Countries Where Entity Provide Broad Range of Banking Services Represents the number of countries where the entity provides a broad range of banking and financial products and services. Number of countries where the entity provides a broad range of banking and financial products and services Common Stock Issued During Period, Shares Issuance of new common stock (in shares) The number of common shares issued during the period. Common Stock Issued During Period, Value Issuance of new common stock Value of common stock issued during the period. Condensed Consolidating Balance Sheet: Condensed Consolidating Balance Sheet [Line Items] CONDENSED CONSOLIDATING FINANCIAL STATEMENTS SCHEDULES Text block that encapsulates the detailed table comprising the condensed consolidating balance sheet. Condensed Consolidating Balance Sheet Condensed Consolidating Statement of Balance Sheet [Table Text Block] Condensed Consolidating Statement of Cash Flows [Line Items] Condensed Consolidating Statements of Cash Flows: Condensed Consolidating Statement of Cash Flows [Table Text Block] Condensed Consolidating Statements of Cash Flows Text block that encapsulates the detailed table comprising the condensed consolidating statement of cash flows. Condensed Consolidating Statements of Income: Condensed Consolidating Statement of Income [Line Items] Condensed Consolidating Statement of Income [Table Text Block] Condensed Consolidating Statements of Income and Comprehensive Income Text block that encapsulates the detailed table comprising the condensed consolidating statement of income. Private Label Mortgage Backed Securitization Transactions Sponsored by Entity Represents the amount of private-label mortgage-backed securitization transactions sponsored by Citigroup affiliates. Private-label mortgage-backed securitization transactions sponsored by Citigroup affiliates Contingent Consideration Received of Previously Discontinued Operation, after Tax This element represents the contingent consideration payment received, which is related to the sale of a business that was classified as a discontinued operation in the previous reporting period, as shown net of tax. Contingent consideration payment received, after-tax Contingent Consideration Received of Previously Discontinued Operation Pretax This element represents the contingent consideration payment received, which is related to the sale of a business that was classified as a discontinued operation in the previous reporting period, as shown before tax. Contingent consideration payment received, pretax Convertible Equity Units [Member] This element represents incremental common shares attributable to convertible equity units that were not included in the computation of diluted earnings per share (EPS) Equity units convertible into common stock held by the Abu Dhabi Investment Authority (ADIA) Citicorp Segment and Corporate and Other [Member] This element represents the Citicorp business segment and corporate and other segment. Total Citicorp and Corporate/Other All other This category of investments includes corporate debt securities, asset-backed securities, and other debt securities not otherwise defined. Corporate Debt Asset Backed and Other Debt Securities [Member] Corporate Finance [Member] This element represents fees and commissions earned on corporate finance activity which consists primarily of fees earned from structuring and underwriting loan syndications. Corporate finance Represents financing receivables classified as corporate loans. Corporate Loan [Member] Corporate This element represents corporate loans. Corporate Loans [Member] Corporate loans Credit card and bank card fees are primarily composed of interchange revenue and certain card fees, including annual fees, reduced by reward program costs. Interchange revenue and fees are recognized when earned, except for annual card fees which are deferred and amortized on a straight-line basis over a 12-month period. Reward costs are recognized when points are earned by the customers. Credit Card and Bank Card [Member] Credit cards and bank cards Credit Card Lines of Credit [Member] Represents the credit provided to customers by issuing credit cards. The credit card lines are unconditionally cancellable by the issuer. Credit card lines Credit Card [Member] Credit cards Credit card assets. Credit card merchant processing guarantees represent the Company's indirect obligations in connection with the processing of private label and bank card transactions on behalf of merchants. Credit card merchant processing Credit Card Merchant Processing [Member] Credit Cards and Unsecured Revolving Loans [Member] Represents credit cards and unsecured revolving loans. Credit cards and unsecured revolving loans Credit Commitments Credit Commitments Represents the amount of outstanding unused credit commitments made by the entity such as letters of credit, lines of credit and loan commitments. The geographic areas for which the credit commitment information is being disclosed. Credit Commitments by Geographic Area [Axis] Credit Commitments by Type of Commitment [Axis] The type of credit commitment for which information is being disclosed. Credit Commitments. Credit Commitments [Line Items] Credit Default Swaps and Options [Member] A credit default swap is a contract in which, for a fee, a protection seller agrees to reimburse a protection buyer for any losses that occur due to a credit event on a reference entity. A credit option is a credit derivative that allows investors to trade or hedge changes in the credit quality of the reference asset. Credit default swaps and options Credit Derivative by Maturity [Axis] Credit derivative by maturity period. Credit Derivative Maturity after Five Years [Member] This element represents the credit derivatives maturing after five years. After 5 years Credit Derivative Maturity [Domain] Different maturity periods to credit derivatives of the entity. Credit Derivative Maturity from One to Five Years [Member] This element represents the credit derivatives maturing between one and five years. From 1 to 5 years Credit Derivative Maturity within One Year [Member] This element represents the credit derivatives maturing within one year. Within 1 year Credit Derivatives by Industry Counterparty [Axis] Credit derivatives by industry or counterparty to the risk transfer. Credit Derivatives Industry Counterparty [Domain] Classification of industry or counterparty to credit derivatives of the entity. Credit Protection Purchased [Member] The party transferring the credit risk of a reference asset to another party. Protection purchased Credit derivatives purchased Credit Protection Sold [Member] The party assuming the credit risk associated with the reference asset without directly purchasing the asset from another party. Protection sold Credit derivatives sold This element represents the number of current or former employees against whom criminal charges have been brought. Current or former employees Criminal Charges Against Number of Current or Former Employees Cumulative Effect of Initial Adoption of New Accounting Principle before Tax Cumulative effect on retained earnings, pretax Cumulative effect of initial adoption of new accounting principle on the opening balance of retained earnings, before tax. Cumulative Equity Method Investment Ownership Percentage Cumulative percentage of ownership interest held in LQIF classified as equity method investment This element represents the equity method ownership interest, after the increase in stake in the investee company. Deposits by Geographic Area [Axis] Custody Indemnifications and Other [Member] Custody indemnifications are issued to guarantee that custody clients will be made whole in the event of a third-party sub-custodian or depository institution failing to safeguard clients' assets. Custody indemnifications and other This element represents the custody of proprietary assets and cash held. Proprietary assets and cash of LBIE held in custody Custody of Proprietary Assets and Cash Held Debt Instrument Remaining Maturity Amount Remaining maturity amount of debt The remaining maturity amount of long-term debt guaranteed by the FDIC under the TLGP. Debt Instrument, Weighted Average Interest Rate after Effect of Derivative Contract Represents the weighted average interest rate at the end of the period after the effect of the derivative contract. Overall weighted average interest rate for long-term debt including effects of derivative contracts (as a percent) Decrease in Deferred Tax Assets Elimination of Deduction for Medicare Prescription Drug Benefit Subsidy Reduction in deferred tax assets, elimination in deductibility of Medicare Part D subsidy The decrease in deferred tax assets resulting from new legislation which eliminates the tax deductibility for benefits paid that are related to the retiree Medicare Part D subsidy. Default rates projection Default Rate Projection [Abstract] Deferred Compensation Arrangements by Plan Type [Axis] Disclosures related to the types of deferred compensation plans that are offered to a group of employees that are intended to be paid in cash unless required. Deferred Tax Assets by Jurisdiction [Axis] Description and amount of deferred tax assets by tax jurisdiction or business component. Deferred Tax Assets by Jurisdiction [Domain] Deferred Tax Assets by Jurisdiction [Line Items] Deferred tax assets by jurisdiction Deferred Tax Assets by Jurisdiction [Table] A listing of components of net deferred tax asset or liability by the applicable tax jurisdiction or business component. Deferred Tax Assets, Compensation Deductions This element represents the compensation deductions included in deferred tax assets for which no adjustment was permitted in tax laws. Compensation deductions included in DTAs Deferred Tax Assets, Future Tax Deductions and Credits The tax effect as of the balance sheet date of the amount of estimated future tax deductions and credits arising from temporary differences. Future Tax Deductions and Credits Deferred Tax Assets Intangibles The tax effect as of the balance sheet date of the amount of the estimated future tax deductions attributable to intangibles related items which can only be realized if sufficient taxable income is available. Intangibles Deferred Tax Assets, Net Operating Loss Carryforwards, New York State Total New York State NOL carryforwards The net tax effect as of the balance sheet date of the amount of excess of tax deductions over gross income in a year which cannot be used on the tax return of a New York state jurisdiction in the current year but can be carried forward to reduce taxable income or income taxes payable in a future year, for which there must be sufficient tax-basis income to utilize a portion or all of the carryforward amount to realize the deferred tax asset. Deferred Tax Assets, Operating Loss Carryforwards, Indefinitely Invested Foreign Subsidiaries Accumulated Undistributed Earnings This element represents the tax effect of the balance sheet date of the amount of excess of tax deductions over gross income in a year which cannot be used on the tax return, relating to unrepatriated foreign earnings, for which deferred taxes have been provided even though they are considered to be permanently reinvested abroad, as of the balance sheet date. Deferred tax assets for foreign subsidiaries where earnings are indefinitely reinvested, net operating loss carryforwards Deferred Tax Assets, Operating Loss Carryforwards, New York Local The tax effect as of the balance sheet date of the amount of excess of tax deductions over gross income in a year which cannot be used on the tax return of a New York Local jurisdiction in the current year but can be carried forward to reduce taxable income or income taxes payable in a future year, for which there must be sufficient tax-basis income to utilize a portion or all of the carryforward amount to realize the deferred tax asset. Total New York City NOL carryforwards Deferred Tax Assets, Tax Credit and Operating Loss Carryforwards The sum of the tax effects as of the balance sheet date of the amount of excesses of tax deductions over gross income in a year which cannot be used on the tax returns in the current year but can be carried forward to reduce taxable income or income taxes payable in a future year and future tax deductions arising from all unused tax credit carryforwards which have been reduced by a valuation allowance. Tax credit and net operating loss carryforwards Deferred Tax Assets, Tax Credit Carryforwards, Federal State and Local Period This element represents the period of expiration of federal, state, and local deferred tax assets carryforwards. U.S. Federal and New York State and City NOL carryforward period Deferred Tax Assets, Tax Credit Carryforwards Foreign Period This element represents the period of expiration of foreign deferred tax assets carryforwards. U.S. foreign tax credit carryforward period This element represents the limit on the utilization of foreign tax credits as a percentage of foreign source taxable income. Limit on utilization of foreign tax credit carryforwards (as a percent) Deferred Tax Assets, Tax Credit Carryforwards, Foreign Utilization Limit Deferred Tax Assets, Tax Credit Carryforwards Income Necessary to Realize, Deferred Tax Assets This element represents the amount of income necessary to fully realize federal, state and local deferred tax assets. Amount of taxable income necessary to fully realize U.S. federal, state and local DTAs Deferred Tax Assets, Tax Deferred Expense Reserves and Accruals Restructuring Charges and Settlement The amount as of the balance sheet date of the estimated future tax deductions arising from estimates of restructuring reserve costs and settlements, which can only be deducted for tax purposes when restructuring charges are actually incurred, and which can only be realized if sufficient tax-basis income is generated in future periods to enable the deduction to be taken. Restructuring and settlement reserves Deferred Tax Assets, Tax Investments Investment and loan basis differences The tax effect as of the balance sheet date of the amount of the estimated future tax deductions arising from the gain or loss incurred on investments and loans. Deferred Tax Assets, Undistributed Foreign Earnings Unremitted foreign earnings This element represents tax effects as of the balance sheet date of the estimated future tax effects attributed to unremitted earnings of subsidiaries and other recognized entities in countries outside the country of domicile which will decrease future taxable income when such earnings are distributed into the country of domicile. Cumulative percentage changes in shareholders' ownership to constitute ownership change Deferred Tax Assets, Utilization Cumulative Ownership Change Percentage This element represents the cumulative percentage change in the shareholders' ownership to constitute an ownership change which will affect the ability of the entity to utilize its deferred tax assets. Deferred Tax Assets, Utilization Ownership Change, Minimum Basis Percentage Increase This element represents the minimum basis percentage increase in the shareholders' ownership in the specified rolling period. Minimum basis percentage points, increase Accrued taxes and other expenses Deferred Tax Assets, Utilization Ownership Change Rolling Period This element represents the rolling period over which the basis percentage increase in the shareholders' equity is measured for the purpose of calculating the 'ownership change' as defined in section 382 of the Internal Revenue Code of 1986, as amended, which will affect the ability of the entity to utilize its deferred tax assets. Rolling period for measuring the percentage points increase Deferred Tax Liabilities, Credit Valuation Adjustment on Debt Issued Credit valuation adjustments on company-issued debt The amount as of the balance sheet date of the estimated future tax effects attributable to credit valuation adjustments on the debt issued by the reporting entity. Deferred Tax Liabilities, Debt Valuation Adjustment on Liabilities The amount as of the balance sheet date of the estimated future tax effects attributable to debt valuation adjustments on the entity's liabilities. Debt valuation adjustments on Citi liabilities Deferred Tax Liabilities, Deferred Policy Acquisition Costs and Value of Insurance in Force Deferred policy acquisition costs and value of insurance in force The amount as of the balance sheet date of the estimated future tax effects attributable to deferred policy acquisition costs and the value of insurance in force. Deferred Tax Liabilities Interest Interest related items The cumulative amount of the estimated future tax effects attributable to interest related temporary differences that were expensed for tax purposes but capitalized in conformity with generally accepted accounting principles. Fixed assets and leases Deferred Tax Liabilities, Property Plant and Equipment and Leases The amount as of the balance sheet date of the estimated future tax effects attributable to the difference between the tax basis of capital assets and leases and the basis of capital assets and leases computed in accordance with generally accepted accounting principles. The difference in basis, attributable to different capitalization of costs, depreciation, or amortization methodologies, will increase future taxable income when such basis difference is realized. Deferred Tax Liabilities to be Reversed Included in Net Deferred Tax Assets This element represents the deferred tax liability included in net deferred tax assets that will reverse in relevant carryforward period. DTLs that will reverse in the relevant carryforward period Defined Benefit Plan, Actual Rate of Return on Assets Represents the percentage actual rate of return on asset under defined benefit plan. Actual rate of return (as a percent) This element represents the realized gains (losses) on plan assets of pension plans and/or other employee benefit plans for the period. Realized gains (losses) Defined Benefit Plan Actual Return on Plan Assets Realized Gains (Losses) Funded Letters of Credit Past Due or on Nonaccrual Status Period, Maximum Maximum period in which funded letter of credit is past due or on non-accrual status. Maximum period funded letters of credit past due or on non-accrual status Defined Benefit Plan Actual Return on Plan Assets Unrealized Gains (Losses) This element represents the unrealized gains (losses) on plan assets of pension plans and/or other employee benefit plans for the period. Unrealized gains (losses) Amortization of unrecognized Defined Benefit Plan Amortization [Abstract] UNITED STATES U.S. Weighted average (as a percent) Represents the weighted average interest rate that is used to adjust for the time value of money for the plan. Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation Discount Rate Weighted Average Future compensation increase rate, Weighted average (as a percent) Represents the expected weighted average rate of compensation increases (for pay-related plans). Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation Weighted Average Rate of Compensation Increase Weighted average (as a percent) Represents the weighted average interest rate that is used to adjust for the time value of money for calculating net periodic benefit cost. Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate, Weighted Average Future compensation increase rate, Weighted average (as a percent) Represents the expected weighted average rate of compensation increases for calculating net periodic benefit cost. Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Weighted Average Rate of Compensation Increase Expected long-term rates of return on assets used in determining pension expense Defined Benefit Plan, Assumptions Used Calculating Pension Expenses Expected Long-term Return on Assets [Abstract] Defined Benefit Plan Change in Benefit Obligation Benefits Earned Represents the amount of benefits earned during the period, which results in change in projected benefit obligation. Defined Benefit Plan, Benefits Earned Curtailments Changes in the benefit obligation liability account for defined benefit plans due to curtailments. Defined Benefit Plan, Change in Benefit Obligation Curtailments Interest cost on benefit obligation Changes in the benefit obligation liability account for defined benefit plans due to interest cost. Defined Benefit Plan, Change in Benefit Obligation Interest Cost Plan participants contributions Changes in the fair value of plan assets for defined benefit plans due to participant contributions. Defined Benefit Plan, Change in Fair Value of Plan Assets Contributions by Plan Participants Defined Benefit Plan, Discretionary Cash Contributions by Employer Represents the discretionary cash contribution made by the employer. Discretionary cash contributions by company Effect of one-percentage-point change in the discount rates Defined Benefit Plan, Effect of One Percentage Point Change in Discount Rates [Abstract] Effect of one-percentage-point change in the expected rates of return Defined Benefit Plan Effect of One Percentage Point Change in Expected Rates of Return [Abstract] Effect of one-percentage-point decrease in the discount rates The effect of a one-percentage-point decrease in the discount rates on pension expenses. Defined Benefit Plan, Effect of One Percentage Point Decrease in Discount Rates on Pension Expenses Effect of one-percentage-point decrease in the expected rates of return on pension expense The effect of a one-percentage-point decrease in the expected rates of return on pension expenses. Defined Benefit Plan, Effect of One Percentage Point Decrease in Expected Rates of Return on Pension Expenses Effect of one-percentage-point increase in the discount rates The effect of a one-percentage-point increase in the discount rates on pension expenses. Defined Benefit Plan, Effect of One Percentage Point Increase in Discount Rates on Pension Expenses Effect of one-percentage-point increase in the expected rates of return on pension expense The effect of a one-percentage-point increase in the expected rates of return on pension expenses. Defined Benefit Plan, Effect of One Percentage Point Increase in Expected Rates of Return on Pension Expenses Defined Benefit Plan Estimated Future Employer Contributions Direct Payment Estimated employer's future contribution for benefit payments expected to be paid directly by the company Represents the employer's estimate of future contribution for benefit payments expected to be paid directly by the company. Defined Benefit Plan Expected Future Benefit Payments before Subsidy in Five Fiscal Years Thereafter The amount of aggregate estimated future benefit payments without the effect of the subsidy in five fiscal years thereafter (the aggregate amount of benefits expected to be paid in years 6 through 10 after the date of the latest statement of financial position). 2016-2020 The estimated future benefit payments without the effect of the subsidy in year 5. 2015 Defined Benefit Plan, Expected Future Benefit Payments before Subsidy in Year Five Defined Benefit Plan, Expected Future Benefit Payments before Subsidy in Year Four The estimated future benefit payments without the effect of the subsidy in year 4. 2014 Defined Benefit Plan, Expected Future Benefit Payments before Subsidy in Year One 2011 The estimated future benefit payments without the effect of the subsidy in year 1. Defined Benefit Plan, Expected Future Benefit Payments before Subsidy in Year Three The estimated future benefit payments without the effect of the subsidy in year 3. 2013 Defined Benefit Plan, Expected Future Benefit Payments before Subsidy in Year Two The estimated future benefit payments without the effect of the subsidy in year 2. 2012 Defined Benefit Plan Fair Value of Plan Assets [Roll Forward] Reconciliations of the beginning and ending balances during the period for Level 3 assets Expected Medicare Part D subsidy The amount of the period's gross receipts that are expected from the prescription drug subsidy, which is to be used in the roll forward of the accumulated postretirement benefit obligation of an applicable postretirement benefit plan. Defined Benefit Plan, Gross, Prescription Drug Subsidy Receipts Expected Investment advisory fees and administrative costs This element represents amount of investment advisory fees and administrative costs that were absorbed by the entity. Defined Benefit Plan, Investment Advisory Fees and Administrative Costs If aggregate disclosures are presented, the aggregate benefit obligation for plans with accumulated benefit obligations in excess of plan assets as of the measurement date of each statement of financial position presented. Accumulated benefit obligation Defined Benefit Plan, Plans with Benefit Obligations in Excess of Plan Assets Accumulated Benefit Obligation Defined Contribution Plan, Employer Contribution Matching Percent of Eligible Compensation The percentage of matching contribution made by the employer to a defined contribution plan for participating employees during the period. Maximum percentage contribution by employer of employees eligible pay Defined Contribution Plan Employer Contribution, Matching Percent of Eligible Compensation Next Fiscal Year The percentage of matching contribution made by the employer to a defined contribution plan for participating employees effective next fiscal year. Maximum percentage contribution by employer of employees eligible pay effective next fiscal year Defined Contribution Plan Fixed Percentage Employer Contribution for Eligible Employees Represents the percentage of fixed contribution for eligible employees whose compensation is 100,000 or less. Percentage of fixed contribution by employer, for eligible employees whose compensation is $100,000 or less Derivative Asset Counterparty Netting and Market Value Adjustment Less: Netting agreements and market value adjustments to assets The sum of the amount of netting of derivative exposures covered by a qualifying master netting agreement and market adjustments (if any) related to derivative assets. Netting agreements and market value adjustments to assets Derivative Asset Cash Collateral Fair Value Disclosure Represents the fair value of cash collateral paid related to derivatives assets. Gross cash collateral paid Derivative Instruments Considered Guarantees [Member] Represents only those derivative instruments that require the entity to make payments to the counterparty based on changes in an underlying that is related to an asset, a liability, or an equity security held by the guaranteed party. More specifically, derivative instruments considered to be guarantees include certain over-the-counter written put options where the counterparty is not a bank, hedge fund or broker-dealer (such counterparties are considered to be dealers in these markets, and may therefore not hold the underlying instruments). Derivative instruments considered to be guarantees Gross cash collateral received Derivative Liability Cash Collateral Fair Value Disclosure Represents the fair value of cash collateral paid related to derivatives liabilities. Less: Netting agreements and market value adjustments to liabilities The sum of the amount of netting of derivative exposures covered by a qualifying master netting agreement and market adjustments (if any) related to derivative liabilities. Netting agreements and market value adjustments to liabilities Netting agreements and market value adjustments to liabilities Derivative Liability Counterparty Netting and Market Value Adjustment Maximum Period in Foreclosure Process for Writing Down Represents the maximum period in the foreclosure process after which loans are written down to net collateral value. Maximum period in foreclosure process to write down loans to net collateral values Past due period of contractual payments after which the foreclosure process should be started Past Due Period for Commencing Foreclosure Process Represents the period contractually past due after which the foreclosure process must commence. Maximum Past Due Period for Writing Down Secured Loans Represents the maximum number of days past due of contractual payments to write down secured loans to net collateral values as per entities' policy. Maximum past due period of contractual payments to write down secured loans to net collateral values Past Due Period for Charging Off Represents the period contractually past due for consumer loans to be charged off if there have been no payments within the last six months. Past due period of contractual payments to charge-off if no payments in six months Maximum Past Due Period Represents the maximum number of days past due of contractual payments for loans in the entity's portfolio. Maximum past due period of contractual payments Maximum Notification Period for Charging Off Loans Represents the maximum period from receiving bankruptcy court filing notification to charge-off loans. Maximum period from receiving bankruptcy court filing notification to charge-off Maximum Notification Period for Writing Down Secured Loans Represents the maximum period from receiving bankruptcy court filing notification to write down secured loans to net collateral values. Maximum period from receiving bankruptcy court filing notification to write down secured loans Devaluation of Venezuelan Bolivar [Member] Represents the effect of Venezuelan Bolivar devaluation. Venezuelan Bolivar Devaluation Represents the disposed of business of Diners Club International. Diners Club International [Member] Diners Club International Discontinued Operation Gain (Loss) on Disposal Gain or loss after tax expense or benefit, not previously recognized and resulting from the sale of a business component, which is recognized at the date of sale from continuing and discontinued operations. A gain or loss on sale transaction Discontinued Operation Gain (Loss) on Disposal of Discontinued Operation Net of Tax Cash Flow Impact (Loss) gain on sale, net of taxes This element represents gain (loss) on sale of discontinued operations affecting cash flows during the period. Represents Discover Financial Services (Discover) and SLM Corporation (Sallie Mae). Discover Financial Services and S L M Corporation [Member] Discover Financial Services (Discover) and SLM Corporation (Sallie Mae) The amount of credit card receivables disposed of as part of the disposal of credit card businesses or portfolios. Credit card receivables disposed of as part of the disposal of credit card businesses or portfolios Disposal Group Credit Card Receivables Disposal Group Including Discontinued Operation Purchase of Assets This element represents the purchase of assets by one subsidiary of another, as a part of the disposal group, including a component of the entity (discontinued operation). Purchase of assets by Citibank, N.A from Student Loan Corporation (SLC) Disposal Group Including Discontinued Operation Transaction Cash Value This element represents the total cash value of the discontinued operation disposal transaction. Total cash value of the discontinued operation disposal transaction Disposal Group Including Discontinued Operation Transaction Value Allocation to Equity Securities This element represents the portion of the total value of the discontinued operations' disposal transaction that resulted from the purchase price of the equity securities held by the business being sold. Purchase price of certain Japanese-listed equity securities held by the business being sold Disposal Group Including Discontinued Operation Transaction Value Allocation to Excess Cash This element represents the portion of the total value of the discontinued operations' disposal transaction that resulted from excess cash derived through the repayment of outstanding indebtedness to the reporting entity. Excess cash derived through the repayment of outstanding indebtedness to Citi Disposal Group Including Discontinued Operations Number of Employees Number of employees included in the sale of discontinued operations This element represents the number of employees included in the discontinued operation. Disposal Group Percentage of Ownership in Disposed Company Represents the percentage of ownership in an entity of which the reporting entity disposed, prior to the disposition. Percentage of ownership in disposed entity Dividend Income Operating from Affiliates Subsidiaries and Holding Companies Dividends from subsidiaries Dividends received from subsidiary companies. Document and Entity Information Domestic Losses Reclassified as Foreign Source Income This element represents domestic losses reclassified as foreign source income which is sufficient to cover foreign tax credits being carried forward. Domestic losses allowed to be reclassified as foreign source income Domestic Losses Reclassified as Foreign Source Income Limit This element represents the limit on domestic losses to be reclassified as foreign source income as a percentage of domestic source income generated in subsequent years. Limit on domestic losses to be reclassified as foreign source income (as a percent) Europe Middle East Africa [Member] This element represents the geographic segment of the entity consisting of Europe, the Middle East, and Africa (EMEA). EMEA Net unrealized gains (losses) on foreign currency translation, after-tax Foreign currency translation adjustment, net of taxes Europe Middle East Africa Regional Consumer Banking [Member] This element represents the Regional Consumer Banking reporting unit of the entity consisting of Europe, the Middle East, and Africa (EMEA). EMEA Regional Consumer Banking Egg Banking Plc [Member] Represents the acquired business of Egg Banking plc. Egg Banking PLC Accumulated Defined Benefit Plans Adjustment [Member] Pension liability adjustments Entity Administered Asset Backed Commercial Paper Conduit [Member] This element represents entity-administered asset-backed commercial paper conduits. Citi-administered asset-backed commercial paper conduits (ABCP) Entity Consolidated Administered Asset-backed Commercial Paper Conduit [Member] Citi-administered asset-backed consolidated commercial paper conduits (ABCP) This element represents entity-administered asset-backed consolidated commercial paper conduits. Entity Unconsolidated Administered Asset-backed Commercial Paper Conduit [Member] Citi-administered asset-backed unconsolidated commercial paper conduits (ABCP) This element represents entity-administered asset-backed unconsolidated commercial paper conduits. Equity-linked notes. Equity Linked Notes [Member] Equity linked notes Equity Securities Non U S [Member] Non-U.S. equity Equity Securities U S [Member] U.S. equity Equity Units Purchase Contract Value of stock issued during the period for Equity units purchase contract. ADIA Upper DECs Equity Units Purchase Contract European Union Incentive Awards [Member] This element represents the incentive awards for identified staff in the European Union. Incentive Awards to identified staff in European Union Excess of Risk Weighted Assets over Tier One Capital The decrease in the Tier 1 Capital Ratio, expressed in terms of basis points, due to the inclusion of sold assets for the credit card securitization trusts in the risk-weighted assets for purposes of calculating risk-based capital ratios. Decrease in Tier 1 Capital ratio (in basis points) Accumulated Net Unrealized Investment Gain (Loss) [Member] Net unrealized gains (losses) on investment securities Exercise of Call Options L Q I F [Member] The exercise of call options to increase the stake in LQIF, a wholly owned subsidiary of Quinenco that controls Banco de Chile. LQIF Expiration Date 2012 to 2019 [Member] This element represents the expiration date of operating loss carryforwards and tax credit carryforwards between 2012 and 2019. 2012-2019 This element represents the expiration date of operating loss carryforwards and tax credit carryforwards between 2012 and 2030. Expiration Date 2012 to 2030 [Member] 2012-2030 Accumulated Other Comprehensive Income (Loss) [Member] Accumulated other comprehensive income (loss) Citigroup's accumulated other comprehensive income (loss) Expiration Date 2012 to 2031 [Member] This element represents the expiration date of operating loss carryforwards and tax credit carryforwards between 2012 and 2031. 2012-2031 Pension liability adjustments, after-tax Pension liability adjustment, net of taxes Expiration Date 2016 [Member] 2016 This element represents the expiration date of operating loss carryforwards and tax credit carryforwards in 2016. This element represents the expiration date of operating loss carryforwards and tax credit carryforwards in 2017. Expiration Date 2017 [Member] 2017 This element represents the expiration date of operating loss carryforwards and tax credit carryforwards in 2018. Expiration Date 2018 [Member] 2018 This element represents the expiration date of operating loss carryforwards and tax credit carryforwards in 2019. Expiration Date 2019 [Member] 2019 Expiration Date 2020 [Member] This element represents the expiration date of operating loss carry-forwards and tax credit carry-forwards in 2020. 2020 Expiration Date 2021 [Member] 2021 This element represents the expiration date of operating loss carry-forwards and tax credit carry-forwards in 2021. Expiration Date 2012 [Member] 2012 This element represents the expiration date of operating loss carry-forwards and tax credit carry-forwards in 2012. This element represents the expiration date of operating loss carry-forwards and tax credit carry-forwards in 2030. 2030 Expiration Date 2030 [Member] Accumulated Other Comprehensive Income (Loss), Other than Temporary Impairment, Not Credit Loss, Net of Tax, Held-to-maturity, Debt Securities After tax unrealized losses reflected in AOCI This element represents the expiration date of operating loss carry-forwards and tax credit carry-forwards in 2031. 2031 Expiration Date 2031 [Member] Net unrealized gains (losses) on cash flow hedges, after-tax Cash flow hedges, net of taxes This element represents the expiration date of operating loss carryforwards and tax credit carryforwards in 2028. Expiration Date 2028 [Member] 2028 Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member] Cash flow hedges Expiration Date 2027 [Member] This element represents the expiration date of operating loss carryforwards and tax credit carryforwards in 2027. 2027 Expiration Date 2029 [Member] 2029 This element represents the expiration date of operating loss carryforwards and tax credit carryforwards in 2029. Expiration Date [Axis] Represents expiration dates of foreign tax credits which are available to be carried forward. Expiration Date [Domain] Represents expiration dates of operating loss carryforwards. Net unrealized gains (losses) on investment securities, after-tax External Credit Rating Not Rated [Member] Represents underlying referenced credits or entities, with respect to guarantees, for which ratings are not available. Not rated Represents the FX Translation. F X Translation [Member] FX translation Citi Belgium [Member] Citi Belgium business Represents the business of Citi Belgium transferred to held for sale. Accumulated Other Comprehensive Income (Loss), Net of Tax Accumulated other comprehensive income (loss) Balance at the beginning of the period, after-tax Balance at the end of the period, after-tax Fair Value Asset and Liabilities Measured on Recurring Basis Unobservable Input Changes, Asset Types [Domain] This element provides general categories of assets and liabilities for which the change in the balance of the fair value measurement using significant unobservable inputs (level 3) is being disclosed. Fair Value Asset and Liabilities Measured on Recurring Basis Unobservable Input Changes by Asset Type [Axis] This element provides the group of categories of assets and liabilities for which the change in the balance of the fair value measurement using significant unobservable inputs (level 3) is being disclosed. Changes in the fair value of assets and liabilities related to significant unobservable inputs (Level 3). Fair Value Asset and Liabilities Measured on Recurring Basis Unobservable Input Changes Fair Value Asset and Liabilities Measured on Recurring Basis Unobservable Input Changes [Line Items] Fair Value Asset and Liabilities Measured on Recurring Basis Unobservable Input Changes [Table] Summarization of changes in the fair value of assets and liabilities using significant unobservable inputs (Level 3). Accumulated Translation Adjustment [Member] Foreign currency translation adjustment, net of hedges Fair Value Assets and Liabilities Measured on Recurring Basis Unobservable Input Reconciliation Asset Types [Domain] This element provides general categories of investment (assets and liabilities) for which the fair value measurement of assets using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes during the period attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets), and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issuances, and settlements (net); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs). Fair Value Assets and Liabilities Measured on Recurring Basis Unobservable Input Reconciliation [Table] Summarization of information required and determined to be provided for purposes of reconciling beginning and ending balances of fair value measurements of assets and liabilities using significant unobservable inputs (Level 3). Such reconciliation, separately presenting changes during the period, at a minimum, may include: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets), and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issuances, and settlements (net); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs). Fair Value Assets and Liabilities Measured on Recurring Basis Unobservable Input Reconciliation [Table Text Block] This element represents, for the fair value measurement of assets and liabilities using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes during the period attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets), and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issuances, and settlements (net); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs). Changes in level 3 fair value category This element represents a number of concepts which are required or determined to be provided for purposes of reconciling beginning and ending balances of fair value measurements of assets and liabilities using significant unobservable inputs (Level 3). Such reconciliation, separately presenting changes during the period, at a minimum, may include: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets), and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issuances, and settlements (net); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs). Fair Value Assets and Liabilities Measured on Recurring Basis Unobservable Input Reconciliation by Asset Type [Axis] Fair Value Assets Measured on Recurring Basis, Change in Unrealized Gains (Losses) Still Held Unrealized gains (losses) still held, assets This item represents the amount of the total change in unrealized (holding) gains or losses for the period which are included in the statement of income (or changes in net assets). Such unrealized (holding) gains or losses relate to those assets still held at the reporting date for which fair value is measured on a recurring basis using significant unobservable inputs (Level 3). Structured Reverse Repos to be Classified Level Three Mature Period, Minimum Represents minimum mature period for structured reverse repos to be classified as Level 3. Minimum mature period for structured reverse repos to be classified as Level 3 Acquired Finite-lived Intangible Assets, Weighted Average Useful Life Weighted-average amortization period for additions in other intangibles FAIR VALUE ELECTIONS Fair Value Liabilities Measured on Recurring Basis, Change in Unrealized Gains (Losses) Still Held Unrealized gains (losses) still held, liabilities This item represents the amount of the total change in unrealized (holding) gains or losses for the period which are included in the statement of income (or changes in net assets). Such unrealized (holding) gains or losses relate to those liabilities still held at the reporting date for which fair value is measured on a recurring basis using significant unobservable inputs (Level 3). Fair Value Liabilities Unfunded Lending Commitments This element represents the estimated fair value of unfunded lending commitments. This does not include the value of those commitments which are generally cancellable by providing notice to the borrower. Estimated fair values of corporate unfunded lending commitments Fair Value Measurement with Unobservable Inputs Assets Transferred from Level Three to Level Two This element represents the transfers from Level 3 of assets measured at fair value on a recurring basis using unobservable inputs, which have taken place during the period. Net transfers from Level 3 to Level 2 Fair Value Measurement with Unobservable Inputs Reconciliation Recurring Basis Asset Gain (Loss) Due to Credit Spreads Widening Included in Principal Transactions Losses on bespoke CDO and index CDO positions due to credit spreads widening Represents total gains or losses during the period (realized and unrealized), arising from assets measured at fair value on a recurring basis using unobservable inputs (level 3) due to credit spreads widening, which are included in earnings or resulted in a change in the net asset value and are included in the income statement in principal transactions. Fair Value Measurement with Unobservable Inputs Reconciliation Recurring Basis Asset Gain (Loss) on Index Positions Classified as Level Two Represents total gains or losses during the period arising from index positions classified as Level two. Gains on index positions classified as Level 2 Fair Value Measurement with Unobservable Inputs Reconciliation Recurring Basis Asset Gain (Loss) Recorded on Total Return Swaps Referencing Returns on Corporate Loans Loss recorded on total return swaps referencing returns on corporate loans Represents total gains or losses during the period (realized and unrealized), arising from assets measured at fair value on a recurring basis using unobservable inputs (level 3), recorded on total return swaps referencing returns on corporate loans which are included in earnings or resulted in a change in the net asset value. Fair Value Measurement with Unobservable Inputs Assets Transferred to Level Three from Level Two Transfers from Level 2 to Level 3 This element represents the transfers into Level 3 of assets measured at fair value on a recurring basis using unobservable inputs, which have taken place during the period. Fair Value Measurement with Unobservable Inputs Assets Transferred to Level Two from Level One Transfers from Level 1 to Level 2 This element represents the transfers into Level 2 of assets measured at fair value on a recurring basis using unobservable inputs, which have taken place during the period. Transfers of assets from Level 1 to Level 2 Fair Value Measurement with Unobservable Inputs Liabilities Transferred to Level Two from Level One Transfers of liabilities from Level 1 to Level 2 This element represents the transfers into Level 2 of liabilities measured at fair value on a recurring basis using unobservable inputs, which have taken place during the period. Transfers from Level 2 to Level 1 This element represents the transfers into Level 1 of assets measured at fair value on a recurring basis using unobservable inputs, which have taken place during the period. Transfers of assets from Level 2 to Level 1 Fair Value Measurement with Unobservable Inputs Assets Transferred to Level One from Level Two Transfers of liabilities from Level 2 to Level 1 This element represents the transfers into Level 1 of liabilities measured at fair value on a recurring basis using unobservable inputs, which have taken place during the period. Fair Value Measurement with Unobservable Inputs Liabilities Transferred to Level One from Level Two Represents the increase (decrease) in the balance of investments, due to sales and redemptions of investments in private equity and hedge funds. Fair Value Measurement with Unobservable Inputs Investments Increase (Decrease) in Level Three Due to Sales and Redemptions of Private Equity and Hedge Fund Increase (decrease) in investments due to sales and redemptions of investments in private equity and hedge funds Fair Value Measurement with Unobservable Inputs Investments Increase (Decrease) in Level Three Due to Purchase of Private Equity and Hedge Funds Increase (decrease) in investments due to purchase of investments in private equity and hedge funds Represents the increase (decrease) in the balance of investments, due to the purchase of investments in private equity and hedge funds. Fair Value Measurement with Unobservable Inputs Corporate Trading Securities Due to Paydowns and Sales Increase (Decrease) in Level Three Increase (decrease) in level 3 of corporate trading debt securities due to pay downs and sales This element represents the increase (decrease) in the balance of corporate trading debt securities classified as Level 3 assets, due to pay downs and sales. Fair Value Measurement with Unobservable Inputs Credit Derivatives Increase (Decrease) in Level Three Increase (decrease) in level 3 of credit derivatives This element represents the increase (decrease) in the balance of credit derivatives classified as Level 3 assets. Fair Value Measurement with Unobservable Inputs Credit Derivatives Settlement Due to Unwind of Contracts Increase (Decrease) in Level Three This element represents the increase (decrease) in the balance of credit derivatives classified as Level 3 assets, due to settlement related to unwind of contracts. Increase (decrease) in level 3 of credit derivatives due to settlement related to unwind of contract Fair Value Measurement with Unobservable Inputs Investments Due to Paydowns and Sales This element represents the increase (decrease) in the balance of investments, due to paydowns and sales. Increase (decrease) in investments due to pay downs and sales Fair Value Measurement with Unobservable Inputs Loans Receivable Mutual Fund Deferred Sales Commission Vie Increase (Decrease) in Level Three This element represents the increase (decrease) in the balance of loans receivable related to mutual fund deferred sales commission VIEs at fair value on a recurring basis using unobservable inputs, which have taken place during the period. Increase (decrease) in level 3 of loans receivable mutual deferred sales commission VIE Additional Paid in Capital Additional paid-in capital Surplus Fair Value Measurement with Unobservable Inputs Loans Receivable Private Label Consumer Mortgage Securitization Trust Vie Increase (Decrease) in Level Three This element represents the increase (decrease) in the balance of loans receivable related to private label consumer mortgage securitization trust VIEs at fair value on a recurring basis using unobservable inputs, which have taken place during the period. Increase (decrease) in level 3 of loans receivable private label consumer mortgage securitization trust VIE Fair Value Measurement with Unobservable Inputs Long-term Debt Collateralized Loan Obligations Vie Increase (Decrease) in Level Three This element represents the increase (decrease) in the balance of long-term debt related to Collateralized Loan Obligations VIEs at fair value on a recurring basis using unobservable inputs, which have taken place during the period. Increase (decrease) in level 3 of long term debt collateralized loan obligation VIE Fair Value Measurement with Unobservable Inputs Long-term Debt Mutual Fund, Deferred Sales Commission Vie Increase (Decrease) in Level Three This element represents the increase (decrease) in the balance of long-term debt related to mutual fund deferred sales commission VIEs at fair value on a recurring basis using unobservable inputs, which have taken place during the period. Increase (decrease) in level 3 of long term debt mutual deferred sales commission VIE Additional Collateral, Aggregate Fair Value Additional collateral posted Fair Value Measurement with Unobservable Inputs Long-term Debt Private Label Consumer Mortgage Securitization Trust Vie Increase (Decrease) in Level Three This element represents the increase (decrease) in the balance of long-term debt related to private label consumer mortgage securitization trust VIEs at fair value on a recurring basis using unobservable inputs, which have taken place during the period. Increase (decrease) in level 3 of long term debt private label consumer mortgage securitization trust VIE Fair Value Measurement with Unobservable Inputs Mortgage Servicing Rights Increase (Decrease) in Level Three Due to Reduction in Interest Rates Increase (decrease) in level 3 of mortgage servicing rights due to reduction in interest rates This element represents the increase (decrease) in the balance of mortgage servicing rights due to reduction in interest rates. Fair Value Measurement with Unobservable Inputs Long-term Debt Scheduled Termination of Structured Transaction Increase (Decrease) in Level Three This element represents the increase (decrease) in the balance of long-term debt related to scheduled termination of a structured transaction at fair value on a recurring basis using unobservable inputs, which have taken place during the period. Increase (decrease) in level 3 of Long-term debt due to scheduled termination of a structured transaction Fair Value Measurement with Unobservable Inputs Marketable Equity Securities Increase (Decrease) Due to Sales of Investments in Private Equity and Hedge Funds in Level Three Increase (decrease) in level 3 of non-marketable equity securities due to sales of investments in private equity and hedge funds This element represents the increase (decrease) in level 3 of non-marketable equity securities due to sales of investments in private equity and hedge funds. Fair Value Measurement with Unobservable Inputs Reconciliation, Recurring Basis Asset Gain (Loss) Included in Other than Principal Transactions This element represents total gains or losses for the period (realized and unrealized), arising from assets measured at fair value on a recurring basis using unobservable inputs (Level 3), which are included in earnings or resulted in a change in net asset value, and are included in the financial statements in locations other than principal transactions. Net realized/unrealized gains (losses) included in locations other than principal transactions, assets Fair Value Measurement with Unobservable Inputs Reconciliation, Recurring Basis Asset Gain (Loss) Included in Principal Transactions This element represents total gains or losses for the period (realized and unrealized), arising from assets measured at fair value on a recurring basis using unobservable inputs (Level 3), which are included in earnings or resulted in a change in net asset value, and are included in the income statement in principal transactions. Net realized/unrealized gains (losses) included in principal transactions, assets Fair Value Measurement with Unobservable Inputs Reconciliation Recurring Basis Asset Gain (Loss) Included in Other Revenue Net realized/ unrealized gains (losses) included in other revenue, assets This element represents total gains or losses for the period (realized and unrealized), arising from assets measured at fair value on a recurring basis using unobservable inputs (Level 3), which are included in earnings or resulted in a change in net asset value, and are included in the income statement in other revenue. Liquidation that have taken place during the period in relation to assets measured at fair value and categorized within Level 3 of the fair value hierarchy. Liquidation of Assets Fair Value Measurement with Unobservable Inputs Reconciliation Recurring Basis Asset Liquidation Loss Contingency, Civil Lawsuits Filed Represents the number of civil lawsuits filed by small and medium-sized enterprises. Number civil lawsuits filed by small and medium-sized enterprises This element represents the fair value of liability measured with unobservable inputs reconciliation recurring basis. Fair Value Measurement with Unobservable Inputs Reconciliation Recurring Basis Liability Balance at beginning of period, liability Balance at end of period, liability Net realized/unrealized gains (losses) included in locations other than principal transactions, liabilities Fair Value Measurement with Unobservable Inputs Reconciliation, Recurring Basis Liability Gain (Loss) Included in Other than Principal Transactions This element represents total gains or losses for the period (realized and unrealized), arising from liabilities measured at fair value on a recurring basis using unobservable inputs (Level 3), which are included in earnings or resulted in a change in net asset value, and are included in the financial statements in locations other than principal transactions. Fair Value Measurement with Unobservable Inputs Reconciliation, Recurring Basis Liability Gain (Loss) Included in Principal Transactions This element represents total gains or losses for the period (realized and unrealized), arising from liabilities measured at fair value on a recurring basis using unobservable inputs (Level 3), which are included in earnings or resulted in a change in net asset value, and are included in the income statement in principal transactions. Net realized/unrealized gains (losses) included in principal transactions, liabilities Fair Value of Goodwill as Percentage of Allocated Book Value This element represents the fair value of goodwill as a percentage of allocated book value. Fair value as a percentage of allocated book value Fair Value of Trusts Funded by Insurer Fair value of securities in trusts funded by reinsurer relating to indemnification Represents the fair value of securities relating to the funding of the trusts by the reinsurer to cover the insurance company's statutory liabilities for long-term care (LTC) Policies. The amount of gains and losses from fair value changes in assets, which are elected under fair value option, included in earnings during the period. Fair Value Option Changes in Fair Value Gain (Loss) on Assets Total assets Changes in fair value gain (loss) on assets The amount of gains and losses from fair value changes in Federal funds purchased and securities loaned or sold under agreements to repurchase, at fair value, which are elected under fair value option, included in earnings during the period. Fair Value Option Changes in Fair Value Gain (Loss) on Federal Funds Purchased and Securities Loaned or Sold under Agreement to Repurchase