| Line | Label | Object Class | Period Type | Balance | Report Element Name |
|---|---|---|---|---|---|
| 1 | 430000 - Disclosure - Restructuring and Related Activities | Network | http://fasb.org/us-gaap/role/disclosure/ExitOrDisposalCostObligations | ||
| 2 | Restructuring and Related Activities [Abstract] | Abstract | us-gaap:RestructuringAndRelatedActivitiesAbstract | ||
| 3 | Restructuring and Related Activities Disclosure [Text Block] | Concept (Text Block (HTML)) | For Period | us-gaap:RestructuringAndRelatedActivitiesDisclosureTextBlock | |
| 4 | Restructuring and Related Costs [Table Text Block] | Concept (Text Block (HTML)) | For Period | us-gaap:ScheduleOfRestructuringAndRelatedCostsTextBlock | |
| 5 | Schedule of Restructuring and Related Costs [Table] | Table | us-gaap:ScheduleOfRestructuringAndRelatedCostsTable | ||
| 6 | Consolidation Items [Axis] | Axis | srt:ConsolidationItemsAxis | ||
| 7 | Consolidation Items [Domain] | Member | srt:ConsolidationItemsDomain | ||
| 8 | Operating Segments [Member] | Member | us-gaap:OperatingSegmentsMember | ||
| 9 | Intersegment Eliminations [Member] | Member | us-gaap:IntersegmentEliminationMember | ||
| 10 | Segment Reconciling Items [Member] | Member | us-gaap:MaterialReconcilingItemsMember | ||
| 11 | Corporate, Non-Segment [Member] | Member | us-gaap:CorporateNonSegmentMember | ||
| 12 | Segments [Axis] | Axis | us-gaap:StatementBusinessSegmentsAxis | ||
| 13 | Segments [Domain] | Member | us-gaap:SegmentDomain | ||
| 14 | Other Segments [Member] | Member | us-gaap:AllOtherSegmentsMember | ||
| 15 | Corporate Segment [Member] | Member | us-gaap:CorporateMember | ||
| 16 | Corporate and Other [Member] | Member | us-gaap:CorporateAndOtherMember | ||
| 17 | Business Acquisition [Axis] | Axis | us-gaap:BusinessAcquisitionAxis | ||
| 18 | Business Acquisition, Acquiree [Domain] | Member | us-gaap:BusinessAcquisitionAcquireeDomain | ||
| 19 | Series of Individually Immaterial Business Acquisitions [Member] | Member | us-gaap:SeriesOfIndividuallyImmaterialBusinessAcquisitionsMember | ||
| 20 | Restructuring Type [Axis] | Axis | us-gaap:RestructuringCostAndReserveAxis | ||
| 21 | Type of Restructuring [Domain] | Member | us-gaap:TypeOfRestructuringDomain | ||
| 22 | Facility Closing [Member] | Member | us-gaap:FacilityClosingMember | ||
| 23 | Spinoff [Member] | Member | us-gaap:SpinoffMember | ||
| 24 | Employee Severance [Member] | Member | us-gaap:EmployeeSeveranceMember | ||
| 25 | One-time Termination Benefits [Member] | Member | us-gaap:OneTimeTerminationBenefitsMember | ||
| 26 | Special Termination Benefits [Member] | Member | us-gaap:SpecialTerminationBenefitsMember | ||
| 27 | Employee Relocation [Member] | Member | us-gaap:EmployeeRelocationMember | ||
| 28 | Contract Termination [Member] | Member | us-gaap:ContractTerminationMember | ||
| 29 | Other Restructuring [Member] | Member | us-gaap:OtherRestructuringMember | ||
| 30 | Restructuring Plan [Axis] | Axis | us-gaap:RestructuringPlanAxis | ||
| 31 | Restructuring Plan [Domain] | Member | us-gaap:RestructuringPlanDomain | ||
| 32 | Income Statement Location [Axis] | Axis | us-gaap:IncomeStatementLocationAxis | ||
| 33 | Income Statement Location [Domain] | Member | us-gaap:IncomeStatementLocationDomain | ||
| 34 | Sales [Member] | Member | us-gaap:SalesMember | ||
| 35 | Trading Revenue [Member] | Member | us-gaap:TradingRevenueMember | ||
| 36 | Cost of Sales [Member] | Member | us-gaap:CostOfSalesMember | ||
| 37 | Principal or Proprietary Transactions [Member] | Member | us-gaap:PrincipalOrProprietaryTransactionsMember | ||
| 38 | Asset Management Income [Member] | Member | us-gaap:AssetManagementIncomeMember | ||
| 39 | Other Income [Member] | Member | us-gaap:OtherIncomeMember | ||
| 40 | Interest Income [Member] | Member | us-gaap:InterestIncomeMember | ||
| 41 | Investment Income [Member] | Member | us-gaap:InvestmentIncomeMember | ||
| 42 | Operating Income (Loss) [Member] | Member | us-gaap:OperatingIncomeLossMember | ||
| 43 | Other Operating Income (Expense) [Member] | Member | us-gaap:OtherOperatingIncomeExpenseMember | ||
| 44 | Interest Expense [Member] | Member | us-gaap:InterestExpenseMember | ||
| 45 | Operating Expense [Member] | Member | us-gaap:OperatingExpenseMember | ||
| 46 | Other Expense [Member] | Member | us-gaap:OtherExpenseMember | ||
| 47 | Nonoperating Income (Expense) [Member] | Member | us-gaap:NonoperatingIncomeExpenseMember | ||
| 48 | Other Nonoperating Income (Expense) [Member] | Member | us-gaap:OtherNonoperatingIncomeExpenseMember | ||
| 49 | Foreign Currency Gain (Loss) [Member] | Member | us-gaap:ForeignCurrencyGainLossMember | ||
| 50 | Sale of Subsidiary Gain (Loss) [Member] | Member | us-gaap:SaleOfSubsidiaryGainLossMember | ||
| 51 | Selling, General and Administrative Expenses [Member] | Member | us-gaap:SellingGeneralAndAdministrativeExpensesMember | ||
| 52 | Selling and Marketing Expense [Member] | Member | us-gaap:SellingAndMarketingExpenseMember | ||
| 53 | General and Administrative Expense [Member] | Member | us-gaap:GeneralAndAdministrativeExpenseMember | ||
| 54 | Other Comprehensive Income Location [Axis] | Axis | us-gaap:OtherComprehensiveIncomeLocationAxis | ||
| 55 | Other Comprehensive Income Location [Domain] | Member | us-gaap:OtherComprehensiveIncomeLocationDomain | ||
| 56 | Other Comprehensive Income (Loss) [Member] | Member | us-gaap:OtherComprehensiveIncomeMember | ||
| 57 | Restructuring Cost and Reserve [Line Items] | LineItems | us-gaap:RestructuringCostAndReserveLineItems | ||
| 58 | Restructuring and Related Activities, Description | Concept (Text/String) | For Period | us-gaap:RestructuringAndRelatedActivitiesDescription | |
| 59 | Restructuring and Related Activities, Initiation Date | Concept (Date) | For Period | us-gaap:RestructuringAndRelatedActivitiesInitiationDate | |
| 60 | Restructuring and Related Activities, Completion Date | Concept (Date) | For Period | us-gaap:RestructuringAndRelatedActivitiesCompletionDate | |
| 61 | Business Acquisition, Planned Restructuring Activities, Description | Concept (Text/String) | For Period | us-gaap:BusinessAcquisitionPlannedRestructuringActivitiesDescription | |
| 62 | Restructuring and Related Cost [Abstract] | LineItems | us-gaap:RestructuringAndRelatedCostLineItems | ||
| 63 | Restructuring and Related Cost, Description | Concept (Text/String) | For Period | us-gaap:RestructuringAndRelatedCostDescription | |
| 64 | Restructuring and Related Cost, Incurred Cost | Concept (Monetary) | For Period | Debit | us-gaap:RestructuringAndRelatedCostIncurredCost |
| 65 | Restructuring and Related Cost, Expected Cost Remaining | Concept (Monetary) | As Of | Debit | us-gaap:RestructuringAndRelatedCostExpectedCostRemaining1 |
| 66 | Restructuring and Related Cost, Caption that Includes Restructuring Charges | Concept (Text/String) | For Period | us-gaap:RestructuringAndRelatedCostCaptionThatIncludesRestructuringCharges | |
| 67 | Restructuring and Related Cost, Accelerated Depreciation | Concept (Monetary) | For Period | Debit | us-gaap:RestructuringReserveAcceleratedDepreciation |
| 68 | Recapitalization Costs | Concept (Monetary) | For Period | Debit | us-gaap:RecapitalizationCosts |
| 69 | Restructuring and Related Cost, Expected Cost [Abstract] | Abstract | us-gaap:RestructuringAndRelatedCostExpectedCostAbstract | ||
| 70 | Restructuring and Related Cost, Cost Incurred to Date | Concept (Monetary) | As Of | Debit | us-gaap:RestructuringAndRelatedCostCostIncurredToDate1 |
| 71 | Restructuring and Related Cost, Expected Cost Remaining | Concept (Monetary) | As Of | Debit | us-gaap:RestructuringAndRelatedCostExpectedCostRemaining1 |
| 72 | Restructuring and Related Cost, Expected Cost, Total | Concept (Monetary) | As Of | Debit | us-gaap:RestructuringAndRelatedCostExpectedCost1 |
| 73 | Restructuring Costs [Abstract] | Abstract | us-gaap:RestructuringCostsAbstract | ||
| 74 | Restructuring Charges [Abstract] | Abstract | us-gaap:RestructuringChargesAbstract | ||
| 75 | Business Exit Costs | Concept (Monetary) | For Period | Debit | us-gaap:BusinessExitCosts1 |
| 76 | Severance Costs | Concept (Monetary) | For Period | Debit | us-gaap:SeveranceCosts1 |
| 77 | Other Restructuring Costs | Concept (Monetary) | For Period | Debit | us-gaap:OtherRestructuringCosts |
| 78 | Restructuring Charges, Total | Concept (Monetary) | For Period | Debit | us-gaap:RestructuringCharges |
| 79 | Payments for Restructuring | Concept (Monetary) | For Period | Credit | us-gaap:PaymentsForRestructuring |
| 80 | Restructuring Costs, Total | Concept (Monetary) | For Period | Debit | us-gaap:RestructuringCosts |
| 81 | Restructuring and Related Cost, Positions Eliminated [Abstract] | Abstract | us-gaap:RestructuringAndRelatedCostPositionsEliminatedAbstract | ||
| 82 | Restructuring and Related Cost, Number of Positions Eliminated | Concept (Integer) | For Period | us-gaap:RestructuringAndRelatedCostNumberOfPositionsEliminated | |
| 83 | Restructuring and Related Cost, Number of Positions Eliminated, Period Percent | Concept (Percent) | For Period | us-gaap:RestructuringAndRelatedCostNumberOfPositionsEliminatedPeriodPercent | |
| 84 | Restructuring and Related Cost, Number of Positions Eliminated, Inception to Date | Concept (Integer) | As Of | us-gaap:RestructuringAndRelatedCostNumberOfPositionsEliminatedInceptionToDate | |
| 85 | Restructuring and Related Cost, Number of Positions Eliminated, Inception to Date Percent | Concept (Percent) | As Of | us-gaap:RestructuringAndRelatedCostNumberOfPositionsEliminatedInceptionToDatePercent | |
| 86 | Restructuring and Related Cost, Expected Number of Positions Eliminated | Concept (Integer) | For Period | us-gaap:RestructuringAndRelatedCostExpectedNumberOfPositionsEliminated | |
| 87 | Restructuring Reserve Disclosures [Abstract] | LineItems | us-gaap:RestructuringReserveLineItems | ||
| 88 | Restructuring Reserve [Abstract] | Abstract | us-gaap:RestructuringReserveAbstract | ||
| 89 | Restructuring Reserve, Current | Concept (Monetary) | As Of | Credit | us-gaap:RestructuringReserveCurrent |
| 90 | Restructuring Reserve, Noncurrent | Concept (Monetary) | As Of | Credit | us-gaap:RestructuringReserveNoncurrent |
| 91 | Restructuring Reserve, Total | Concept (Monetary) | As Of | Credit | us-gaap:RestructuringReserve |
| 92 | Restructuring Reserve [Roll Forward] | Abstract | us-gaap:RestructuringReserveRollForward | ||
| 93 | Restructuring Reserve, Beginning Balance | Concept (Monetary) | As Of | Credit | us-gaap:RestructuringReserve |
| 94 | Restructuring Charges | Concept (Monetary) | For Period | Debit | us-gaap:RestructuringCharges |
| 95 | Payments for Restructuring | Concept (Monetary) | For Period | Credit | us-gaap:PaymentsForRestructuring |
| 96 | Restructuring Reserve, Settled without Cash | Concept (Monetary) | For Period | Debit | us-gaap:RestructuringReserveSettledWithoutCash2 |
| 97 | Restructuring Reserve, Foreign Currency Translation Gain (Loss) | Concept (Monetary) | For Period | Credit | us-gaap:RestructuringReserveTranslationAdjustment |
| 98 | Restructuring Reserve, Accrual Adjustment | Concept (Monetary) | For Period | Debit | us-gaap:RestructuringReserveAccrualAdjustment1 |
| 99 | Restructuring Reserve, Translation and Other Adjustment | Concept (Monetary) | For Period | Credit | us-gaap:RestructuringReserveTranslationAndOtherAdjustment |
| 100 | Restructuring Reserve, Period Increase (Decrease), Total | Concept (Monetary) | For Period | us-gaap:RestructuringReservePeriodIncreaseDecrease | |
| 101 | Restructuring Reserve, Ending Balance | Concept (Monetary) | As Of | Credit | us-gaap:RestructuringReserve |
| 102 | Restructuring Reserve, Adjustment Description | Concept (Text/String) | For Period | us-gaap:RestructuringReserveAdjustmentDescription | |
| 103 | Restructuring and Related Activities, Liability Not Recognized | Concept (Text/String) | For Period | us-gaap:RestructuringAndRelatedActivitiesLiabilityNotRecognized | |
| 104 | Restructuring, Name of Segment [Extensible List] | Concept (srt-types:extensibleListItemType) | For Period | us-gaap:RestructuringNameOfSegmentExtensibleList | |
| 105 | Schedule of Effects on Future Earnings and Cash Flows Resulting from Exit Plan [Table Text Block] | Concept (Text Block (HTML)) | For Period | us-gaap:ScheduleOfEffectsOnFutureEarningsAndCashFlowsResultingFromExitPlanTextBlock | |
| 106 | Schedule of Effects on Future Earnings and Cash Flows Resulting from Exit Plan [Table] | Table | us-gaap:ScheduleOfEffectsOnFutureEarningsAndCashFlowsResultingFromExitPlanTable | ||
| 107 | Effects on Future Earnings and Cash Flows Resulting from Exit Plan [Axis] | Axis | us-gaap:EffectsOnFutureEarningsAndCashFlowsResultingFromExitPlanAxis | ||
| 108 | Effects on Future Earnings and Cash Flows, by Type of Effect [Domain] | Member | us-gaap:EffectsOnFutureEarningsAndCashFlowsByTypeOfEffectDomain | ||
| 109 | Reduced Depreciation [Member] | Member | us-gaap:ReducedDepreciationMember | ||
| 110 | Reduced Employee Expenses [Member] | Member | us-gaap:ReducedEmployeeExpensesMember | ||
| 111 | Effects on Future Earnings and Cash Flows Resulting from Exit Plan [Line Items] | LineItems | us-gaap:EffectsOnFutureEarningsAndCashFlowsResultingFromExitPlanLineItems | ||
| 112 | Effect on Future Cash Flows, Amount | Concept (Monetary) | For Period | Debit | us-gaap:EffectOnFutureCashFlowsAmount |
| 113 | Effect on Future Earnings, Amount | Concept (Monetary) | For Period | Credit | us-gaap:EffectOnFutureEarningsAmount |
| 114 | Initial Period in which Effects are Expected to be Realized | Concept (Text/String) | For Period | us-gaap:InitialPeriodInWhichEffectsAreExpectedToBeRealized | |
| 115 | Effect on Future Earnings, Offset Amount | Concept (Monetary) | For Period | Debit | us-gaap:EffectOnFutureEarningsOffsetAmount |
| 116 | Effect on Future Earnings and Cash Flows, Offset Description | Concept (Text/String) | For Period | us-gaap:EffectOnFutureEarningsAndCashFlowsOffsetDescription | |
| 117 | Effect on Future Earnings, Income Statement Line Item Impacted | Concept (Text/String) | For Period | us-gaap:EffectOnFutureEarningsAndCashFlowsIncomeStatementLineItemImpacted | |
| 118 | Actual Savings Anticipated by Previous Exit Plan Not Achieved as Expected, Outcome and Reasons | Concept (Text/String) | For Period | us-gaap:ActualSavingsAnticipatedByPreviousExitPlanNotAchievedAsExpectedOutcomeAndReasons | |
| 119 | Impairment Effects on Earnings Per Share [Table Text Block] | Concept (Text Block (HTML)) | For Period | us-gaap:ImpairmentEffectsOnEarningsPerShareTableTextBlock | |
| 120 | Impairment Effects on Earnings Per Share [Table] | Table | us-gaap:ImpairmentEffectsOnEarningsPerShareTable | ||
| 121 | Asset Class [Axis] | Axis | us-gaap:FairValueByAssetClassAxis | ||
| 122 | Asset Class [Domain] | Member | us-gaap:FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain | ||
| 123 | Property, Plant and Equipment [Member] | Member | us-gaap:PropertyPlantAndEquipmentMember | ||
| 124 | Indefinite-lived Intangible Assets [Member] | Member | us-gaap:IndefinitelivedIntangibleAssetsMember | ||
| 125 | Finite-Lived Intangible Assets [Member] | Member | us-gaap:FiniteLivedIntangibleAssetsMember | ||
| 126 | Goodwill [Member] | Member | us-gaap:GoodwillMember | ||
| 127 | Impairment Effects on Earnings Per Share [Line Items] | LineItems | us-gaap:ImpairmentEffectsOnEarningsPerShareLineItems | ||
| 128 | Impairment Effect on Earnings Per Share, Pretax | Concept (Share) | For Period | us-gaap:ImpairmentEffectOnEarningsPerSharePretax | |
| 129 | Impairment Effect on Earnings Per Share, after Tax | Concept (Share) | For Period | us-gaap:ImpairmentEffectOnEarningsPerShareAfterTax | |
| 130 | Disclosure Text Block Supplement [Abstract] | Abstract | us-gaap:DisclosureTextBlockSupplementAbstract | ||
| 131 | Restructuring, Impairment, and Other Activities Disclosure [Text Block] | Concept (Text Block (HTML)) | For Period | us-gaap:RestructuringImpairmentAndOtherActivitiesDisclosureTextBlock | |
| 132 | Table Text Block Supplement [Abstract] | Abstract | us-gaap:TableTextBlockSupplementAbstract | ||
| 133 | Schedule of Restructuring Reserve by Type of Cost [Table Text Block] | Concept (Text Block (HTML)) | For Period | us-gaap:ScheduleOfRestructuringReserveByTypeOfCostTextBlock | |
| 134 | Extensible Enumeration Domain Members | Network | http://fasb.org/us-gaap/role/eedm/ExtensibleEnumerationLists | ||
| 135 | SRT Extensible Enumeration Domain Members | Network | http://fasb.org/srt/role/srt-eedm/ExtensibleEnumerationLists |