Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative [Table]
Derivative [Table]
Hedging Designation [Axis]
Hedging Designation [Axis]
Hedging Designation [Domain]
Hedging Designation [Domain]
Designated as Hedging Instrument
Designated as Hedging Instrument [Member]
Hedging Relationship [Axis]
Hedging Relationship [Axis]
Hedging Relationship [Domain]
Hedging Relationship [Domain]
Net Investment Hedging
Net Investment Hedging [Member]
Derivative Instrument [Axis]
Derivative Instrument [Axis]
Derivative Contract [Domain]
Derivative Contract [Domain]
Forward contracts
Foreign Exchange Forward [Member]
Range [Axis]
Range [Axis]
Range [Domain]
Range [Domain]
Minimum
Minimum [Member]
Maximum
Maximum [Member]
Derivative [Line Items]
Derivative [Line Items]
Derivative notional amount
Derivative, Notional Amount
Derivative, option strike price (in dollars per unit)
Derivative, Foreign Currency Option Strike Price
Hedge ineffectiveness recorded in investment and other income
Amount of Ineffectiveness on Net Investment Hedges
Cash collateral held from counterparty
Derivative, Collateral, Obligation to Return Cash
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Schedule of Tax Effects Allocated to Each Component of Other Comprehensive Income
Comprehensive Income (Loss) [Table Text Block]
Schedule of Components of Accumulated Other Comprehensive Income
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Schedule of Share-Based Compensation
Schedule of Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan [Table Text Block]
Schedule of Company Stock Option Transactions
Share-based Compensation, Activity [Table Text Block]
Schedule of Fair Value of Options Granted and Assumptions
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]
Schedule of Company Restricted Stock Units Transactions
Schedule of Nonvested Share Activity [Table Text Block]
Debt Disclosure [Abstract]
Debt Instrument Redemption [Table]
Debt Instrument Redemption [Table]
Debt Instrument [Axis]
Debt Instrument [Axis]
Debt Instrument, Name [Domain]
Debt Instrument, Name [Domain]
Junior Convertible Trust Preferred Securities
Junior Convertible Trust Preferred Securities [Member]
Represents the junior convertible trust preferred securities.
Debt Instrument, Redemption [Line Items]
Debt Instrument, Redemption [Line Items]
Stated interest rate
Debt Instrument, Interest Rate, Stated Percentage
Conversion ratio per share of common stock
Debt Instrument, Convertible, Conversion Ratio
Face amount of convertible security
Debt Instrument, Individual Security, Face Amount
Debt Instrument, Individual Security, Face Amount
Adjusted conversion price (in dollars per share)
Debt Instrument, Convertible, Conversion Price
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Basis of Presentation
Basis of Accounting, Policy [Policy Text Block]
Use of Estimates
Use of Estimates, Policy [Policy Text Block]
Recently Adopted Accounting Standards
New Accounting Pronouncements, Policy [Policy Text Block]
Investments in Affiliates and Affiliate Sponsored Investments Products
Consolidation, Policy [Policy Text Block]
Earnings Per Share [Abstract]
Number or shares repurchased during period (in shares)
Treasury Stock, Shares, Acquired
Average price of shares repurchased during period (in dollars per share)
Treasury Stock Acquired, Average Cost Per Share
Fair Value Disclosures [Abstract]
Fair Value Measurements
Fair Value Disclosures [Text Block]
Affiliate Equity [Abstract]
Affiliate Equity [Abstract]
Affiliate Equity [Table]
Affiliate Equity [Table]
Affiliate Equity [Table]
Related Party [Axis]
Related Party [Axis]
Related Party [Domain]
Related Party [Domain]
Affiliated Entity
Affiliated Entity [Member]
Equity Components [Axis]
Equity Components [Axis]
Equity Component [Domain]
Equity Component [Domain]
Non- controlling Interests
Noncontrolling Interest [Member]
Affiliate Equity [Line Items]
Affiliate Equity [Line Items]
[Line Items] for Affiliate Equity [Table]
Controlling interest
Compensation Expenses Related to Affiliate Equity
Represents the compensation expenses related to Affiliate equity.
Non-controlling interests
Affiliate Equity Compensation Expense, Attributable to Noncontrolling Interest
Affiliate Equity Compensation Expense, Attributable to Noncontrolling Interest
Affiliate equity expense
Affiliate Equity Compensation Expense, Including Portion Attributable to Noncontrolling Interest
Affiliate Equity Compensation Expense, Including Portion Attributable to Noncontrolling Interest
Unrecognized Affiliate Equity Expense [Abstract]
Unrecognized Affiliate Equity Expense [Abstract]
Unrecognized Affiliate Equity Expense [Abstract]
Controlling Interest
Unrecognized Compensation Expenses Related to Affiliate Equity Attributable to Controlling Interest
Unrecognized Compensation Expenses Related to Affiliate Equity Attributable to Controlling Interest
Remaining Life (in years)
Affiliate Equity, Unrecognized Compensation Expense, Weighted Average Period of Recognition
Affiliate Equity, Unrecognized Compensation Expense, Weighted Average Period of Recognition
Non-Controlling Interest
Affiliate Equity Unrecognized Compensation Expense, Attributable to Noncontrolling Interest
Affiliate Equity Unrecognized Compensation Expense, Attributable to Noncontrolling Interest
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Changes in Goodwill
Schedule of Goodwill [Table Text Block]
Schedule of Changes in the Components of Acquired Client Relationships
Schedule of Intangible Assets by Major Class [Table Text Block]
Tabular disclosure of intangibles assets, in total and by major class, including the gross carrying amount and accumulated amortization. A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of a company.
Marketable Securities [Abstract]
Investments in Marketable Securities
Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block]
Statement of Stockholders' Equity [Abstract]
Statement [Table]
Statement [Table]
Common Stock
Common Stock [Member]
Additional Paid-In Capital
Additional Paid-in Capital [Member]
Accumulated Other Comprehensive Income (Loss)
AOCI Attributable to Parent [Member]
Retained Earnings
Retained Earnings [Member]
Treasury Stock at Cost
Treasury Stock [Member]
Statement
Statement [Line Items]
Increase (Decrease) in Stockholders' Equity
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance (in shares)
Common Stock, Shares, Outstanding
Beginning Balance
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest
Net income
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest
Other comprehensive income
Other Comprehensive Income (Loss), Net of Tax
Share-based compensation
Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition
Common stock issued under share-based incentive plans
Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures
Share repurchases
Treasury Stock, Value, Acquired, Cost Method
Dividends ($0.60 per share and $0.90 per share)
Dividends
Issuance costs and other
Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs and Other
Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs and Other
Affiliate equity activity:
Affiliate equity expense
Affiliate Equity Compensation Expense, Including Adjustments and Portion Attributable to Noncontrolling Interest
Affiliate Equity Compensation Expense, Including Adjustments and Portion Attributable to Noncontrolling Interest
Issuances
Noncontrolling Interest, Increase from Subsidiary Equity Issuance
Repurchases
Noncontrolling Interest, Increase (Decrease) from Purchase of Interests
Noncontrolling Interest, Increase (Decrease) from Purchase of Interests
Changes in redemption value of Redeemable non-controlling interests
Noncontrolling Interest, Decrease from Redemptions
Noncontrolling Interest, Decrease from Redemptions
Transfers to Redeemable non-controlling interests
Noncontrolling Interest, Decrease from Transfers to Noncontrolling Interest Holders
Noncontrolling Interest, Decrease from Transfers to Noncontrolling Interest Holders
Capital contributions by Affiliate equity holders
Noncontrolling Interest, Increase from Contributions from Affiliate
Noncontrolling Interest, Increase from Contributions from Affiliate
Distributions to non-controlling interests
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders
Ending Balance (in shares)
Ending Balance
Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table]
Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table]
Award Type [Axis]
Award Type [Axis]
Award Type [Domain]
Equity Award [Domain]
Stock Options
Employee Stock Option [Member]
Share-based Compensation
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options granted, fair value
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value
Stock options, vesting period (in years)
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period
Stock options, expiration period (in years)
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period
Stock options granted, weighted average fair value (in dollars per share)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]
Dividend yield
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate
Expected volatility
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate
Risk-fee interest rate
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate
Expected life of options (in years)
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term
Forfeiture rate
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions Forfeiture Rate
Represents the expected rate the entity will cancel the stock option awards due to nonfulfillment of certain conditions of equity-based compensation arrangements.
Accounting Standards and Policies
New Accounting Pronouncements and Changes in Accounting Principles [Text Block]
Schedule of Company's Derivative Assets and Liabilities Measured at Fair Value on Recurring Basis
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]
Schedule of Effect of Derivative Financial Instruments on the Consolidated Statements of Comprehensive Income and Statements of Income
Derivative Instruments, Gain (Loss) [Table Text Block]
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table]
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table]
Antidilutive Securities [Axis]
Antidilutive Securities [Axis]
Antidilutive Securities, Name [Domain]
Antidilutive Securities, Name [Domain]
Stock options and restricted stock units
Employee Stock Options and Restricted Stock [Member]
Employee Stock Options and Restricted Stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount
Numerator
Net Income (Loss) Available to Common Stockholders, Basic [Abstract]
Net income (controlling interest)
Net Income (Loss) Attributable to Parent
Interest expense on convertible securities, net of taxes
Interest on Convertible Debt, Net of Tax
Net income (controlling interest), as adjusted
Net Income (Loss) Available to Common Stockholders, Diluted
Denominator
Weighted Average Number of Shares Outstanding, Diluted [Abstract]
Average shares outstanding (basic) (in shares)
Weighted Average Number of Shares Outstanding, Basic
Effect of dilutive instruments:
Incremental Weighted Average Shares Attributable to Dilutive Effect [Abstract]
Stock options and restricted stock (in shares)
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements
Convertible securities (in shares)
Incremental Common Shares Attributable to Dilutive Effect of Conversion of Debt Securities
Average shares outstanding (diluted) (in shares)
Weighted Average Number of Shares Outstanding, Diluted
Derivative Financial Instruments
Derivative Instruments and Hedging Activities Disclosure [Text Block]
Commitments and Contingencies Disclosure [Abstract]
Commitment and Contingencies [Table]
Commitment and Contingencies [Table]
Represents commitments and contingencies of the entity.
Consolidated Affiliates
Consolidated Entities [Member]
Equity Method Investee
Equity Method Investee [Member]
Scenario [Axis]
Scenario [Axis]
Scenario, Unspecified [Domain]
Scenario, Unspecified [Domain]
Scenario, Forecast
Scenario, Forecast [Member]
Commitments and Contingencies
Commitment and Contingencies [Line Items]
-- None. No documentation exists for this element. --
Co-investment commitments in partnership
Investment Commitment, Amount
The amount that the entity agreed to co-invest in certain investment partnerships where the entity serves as the general partner.
Contingent liability
Other Commitment
Expected payments of contingent liability
Other Commitment Expected Payments
Other Commitment Expected Payments
Present value of expected payments of contingent liabilities
Other Commitment Present Value of Expected Payments
Other Commitment Present Value of Expected Payments
Equity Method Investments and Joint Ventures [Abstract]
Schedule of Changes in Equity Method Investments in Affiliates
Equity Method Investments [Table Text Block]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Table]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Table]
Investment Type [Axis]
Investment Type [Axis]
Investment Type Categorization [Domain]
Investments [Domain]
Other Investments
Other than Securities Investment [Member]
Private Equity Funds
Private Equity Funds [Member]
Other Funds
Other Funds [Member]
Investments held in other funds.
Controlling Interest
Parent [Member]
Fair Value Hierarchy and NAV [Axis]
Fair Value Hierarchy and NAV [Axis]
Fair Value Hierarchy and NAV [Domain]
Fair Value Hierarchy and NAV [Domain]
Fair Value Measured at NAV
Fair Value Measured at Net Asset Value Per Share [Member]
NAV of investments at fair value
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value
Alternative Investment
Unfunded Commitments
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Unfunded Commitments
Life of funds (in years)
Fair Value, Investments, Entities That Calculate NAVs, Life of Fund
Fair Value, Investments, Entities That Calculate NAVs, Life of Fund
Fair Value Measurements, Recurring and Nonrecurring [Table]
Fair Value Measurements, Recurring and Nonrecurring [Table]
Measurement Frequency [Axis]
Measurement Frequency [Axis]
Fair Value, Measurement Frequency [Domain]
Fair Value, Measurement Frequency [Domain]
Fair Value Measured On A Recurring Basis
Fair Value, Measurements, Recurring [Member]
Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Inputs, Level 1 [Member]
Significant Other Observable Inputs (Level 2)
Fair Value, Inputs, Level 2 [Member]
Significant Unobservable Inputs (Level 3)
Fair Value, Inputs, Level 3 [Member]
Fair value of financial assets and liabilities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial Assets
Assets, Fair Value Disclosure [Abstract]
Cash equivalents
Cash and Cash Equivalents, Fair Value Disclosure
Investments in marketable securities
Investments, Fair Value Disclosure
Derivative financial instruments
Derivative Asset
Financial Liabilities
Liabilities, Fair Value Disclosure [Abstract]
Contingent payment arrangements
Obligations, Fair Value Disclosure
Affiliate equity repurchase obligations
Due to Related Parties, Fair Value Disclosure
Due to Related Parties, Fair Value Disclosure
Derivative financial instruments
Derivative Liability
Goodwill and Acquired Client Relationships
Goodwill and Intangible Assets Disclosure [Text Block]
Variable Interest Entities
-- None. No documentation exists for this element. --
Investments in Affiliates and Affiliate Sponsored Investment Products
Variable Interest Entities Disclosure [Text Block]
This element represents the disclosure of variable interest entities (VIE), including, but not limited to the nature, purpose, size, and activities of the VIE, the carrying amount and classification of consolidated assets that are collateral for the VIE's obligations, lack of recourse if creditors (or beneficial interest holders) of a consolidated VIE have no recourse to the general credit of the primary beneficiary. Which also include information related to Sponsored Investment Funds and Trust Preferred Vehicles related to variable interest entities (VIE).
Convertible Securities
Convertible Securities [Text Block]
Information about convertible debt arrangements, which may include amounts of borrowings, the underlying arrangements, repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, and other matters important to users of the financial statements.
Noncontrolling Interest [Abstract]
Redeemable Non-Controlling Interests
Noncontrolling Interest Disclosure [Text Block]
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation and Use of Estimates
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]
Schedule of Intangible Assets, by Major Class [Table]
Schedule of Intangible Assets, by Major Class [Table]
Tabular disclosure of the major classes of acquired finite-lived and indefinite-lived intangible assets showing the amount, any significant residual value, weighted average amortization period, and other characteristics. A major class is composed of intangible assets that can be grouped together because they are similar, either by nature or by their use in the operations of the company.
Finite-Lived Intangible Assets by Major Class [Axis]
Finite-Lived Intangible Assets by Major Class [Axis]
Finite-Lived Intangible Assets, Major Class Name [Domain]
Finite-Lived Intangible Assets, Major Class Name [Domain]
Acquired Client Relationships
Customer Relationships [Member]
Intangible Assets
Intangible Asset [Line Items]
-- None. No documentation exists for this element. --
Definite-lived
Finite-lived Intangible Assets [Roll Forward]
Beginning balance, gross book value
Finite-Lived Intangible Assets, Gross
Beginning balance, accumulated amortization
Finite-Lived Intangible Assets, Accumulated Amortization
Beginning balance, net book value
Finite-Lived Intangible Assets, Net
Amortization and impairments
Impairment of Intangible Assets, Finite-lived
Foreign currency translation
Finite Lived Intangible Assets, Foreign Currency Translation Gain (Loss)
Ending balance, gross book value
Ending balance, accumulated amortization
Ending balance, net book value
Indefinite-lived
Indefinite-lived Intangible Assets [Roll Forward]
Beginning balance, net book value
Indefinite-lived Intangible Assets (Excluding Goodwill)
Intangible amortization and impairments
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)
Foreign currency translation
Indefinite-lived Intangible Assets, Foreign Currency Translation Gain (Loss)
Ending balance, net book value
Total
Intangible Assets [Roll Forward]
-- None. No documentation exists for this element. --
Beginning balance, net book value
Intangible Assets, Net (Excluding Goodwill)
Amortization and impairments
Impairment of Intangible Assets (Excluding Goodwill)
Foreign currency translation
Intangible Assets Net Excluding Goodwill Translation Adjustments
Represents the amount of increase (decrease) to assets, excluding financial assets and goodwill, for foreign currency translation adjustments.
Ending balance, net book value
Income Tax Disclosure [Abstract]
Schedule of Income Tax Provisions by Controlling and Noncontrolling Interests
Schedule of Components of Income Tax (Expense) Benefit by Controlling and Noncontrolling interests [Table Text Block]
Tabular disclosure of the components of income tax expense attributable to controlling and non-controlling interests for each year presented including, income before income taxes and effective tax rate attributable to controlling interests.
Schedule of Long-term Debt Instruments [Table]
Schedule of Long-term Debt Instruments [Table]
Long-term Debt, Type [Axis]
Long-term Debt, Type [Axis]
Long-term Debt, Type [Domain]
Long-term Debt, Type [Domain]
Unsecured Debt
Unsecured Debt [Member]
Revolver
Senior Unsecured Credit Facility Revolver [Member]
Senior Unsecured Credit Facility Revolver
Term Loan
Senior Unsecured Term Loan [Member]
Senior Unsecured Term Loan
Long-term debt
Debt Instrument [Line Items]
Total available borrowing
Line of Credit Facility, Maximum Borrowing Capacity
Additional borrowing amount
Line of Credit Facility, Maximum Borrowing Capacity, Additional Amount
Line of Credit Facility, Maximum Borrowing Capacity, Additional Amount
Borrowings outstanding
Long-term Line of Credit
Principal amount at maturity
Debt Instrument, Face Amount
Schedule of Variable Interest Entities [Table]
Schedule of Variable Interest Entities [Table]
Variable Interest Entities [Axis]
Variable Interest Entities [Axis]
Variable Interest Entity, Classification [Domain]
Variable Interest Entity, Classification [Domain]
Variable Interest Entities
Variable Interest Entity [Line Items]
Unconsolidated VIE Net Assets
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets and Liabilities, Net
Carrying Value and Maximum Exposure to Loss
Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount
Derivatives in Net Investment Hedging Relationship
Put option
Put Option [Member]
Call option
Call Option [Member]
Income Statement Location [Axis]
Income Statement Location [Axis]
Income Statement Location [Domain]
Income Statement Location [Domain]
Interest Expense
Interest Expense [Member]
Gain (Loss) Recognized in Other Comprehensive Income
Other Comprehensive Income (Loss), Net Investment Hedge, Gain (Loss), Net of Tax
Other Comprehensive Income (Loss), Net Investment Hedge, Gain (Loss), Net of Tax
Gain (Loss) Recognized in Earnings from Excluded Components
Gain (Loss) on Derivative Used in Net Investment Hedge, after Tax
Related Party Transactions [Abstract]
Related Party Transactions
Related Party Transactions Disclosure [Text Block]
Document and Entity Information
-- None. No documentation exists for this element. --
Entity Registrant Name
Entity Registrant Name
Entity Central Index Key
Entity Central Index Key
Document Type
Document Type
Document Period End Date
Document Period End Date
Amendment Flag
Amendment Flag
Current Fiscal Year End Date
Current Fiscal Year End Date
Entity Current Reporting Status
Entity Current Reporting Status
Entity Filer Category
Entity Filer Category
Entity Small Business
Entity Small Business
Entity Emerging Growth Company
Entity Emerging Growth Company
Entity Common Stock, Shares Outstanding
Entity Common Stock, Shares Outstanding
Document Fiscal Year Focus
Document Fiscal Year Focus
Document Fiscal Period Focus
Document Fiscal Period Focus
Subsequent Events [Abstract]
Subsequent Events
Subsequent Events [Text Block]
Intangible amortization and impairments
Intangible Amortization and Impairments [Member]
Intangible Amortization and Impairments
Goodwill impairment
Goodwill, Impairment Loss
Amortization and impairment expenses of intangible assets
Amortization of Intangible Assets
Estimated Future Amortization Expense of Finite-Lived Intangibles
Finite-Lived Intangible Assets, Net, Amortization Expense, Rolling Maturity [Abstract]
Finite-lived intangible, future amortization expense in 2018
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months
Finite-lived intangible, future amortization expense in 2019
Finite-Lived Intangible Assets, Amortization Expense, Year Two
Finite-lived intangible, future amortization expense in 2020
Finite-Lived Intangible Assets, Amortization Expense, Year Three
Finite-lived intangible, future amortization expense in 2021
Finite-Lived Intangible Assets, Amortization Expense, Year Four
Finite-lived intangible, future amortization expense in 2022
Finite-Lived Intangible Assets, Amortization Expense, Year Five
Affiliate Equity
Affiliate Equity [Text Block]
Disclosures related to the conditional rights and obligations the company has to acquire Affiliate equity and the redeemable non-controlling interests on the consolidated balance sheets. Disclosure of the impact on the controlling interest's equity of changes in ownership at its Affiliates.
Share-Based Compensation
Disclosure of Compensation Related Costs, Share-based Payments [Text Block]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table]
Liability Class [Axis]
Liability Class [Axis]
Fair Value by Liability Class [Domain]
Fair Value by Liability Class [Domain]
Contingent Payment Arrangements
Contingent Payment Arrangements [Member]
Represents contingent payment arrangements of the entity.
Affiliate Equity Repurchase Obligations
Obligations to Related Parties [Member]
Represents the obligations of the entity towards related parties.
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value
Net realized and unrealized (gains) losses
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Earnings and Other Comprehensive Income (Loss)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Earnings and Other Comprehensive Income (Loss)
Purchases and issuances
Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Purchases And Issuances
Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Purchases And Issuances
Settlements and reductions
Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Settlements And Reductions
Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Settlements And Reductions
Balance, end of period
Net change in unrealized (gains) losses relating to instruments still held at the reporting date
Fair Value, Liabilities Measured on Recurring Basis, Change in Unrealized Gain (Loss)
Senior Debt
Debt Disclosure [Text Block]
Income Tax Provision [Table]
Income Tax Provision [Table]
Schedule reflecting information of income tax attributable to controlling and noncontrolling interests.
Consolidated Entities [Axis]
Consolidated Entities [Axis]
Consolidated Entities [Domain]
Consolidated Entities [Domain]
Controlling Interest
Parent Company [Member]
Income Tax Provision
Income Tax [Line Items]
-- None. No documentation exists for this element. --
Current tax
Current Income Tax Expense (Benefit)
Intangible-related deferred taxes
Deferred Income Tax Expense Related to Intangibles
The component of income tax expense for the period representing the tax effect of the difference between amortization of intangibles for book purposes and amortization of intangibles for tax purposes.
Other deferred taxes
Deferred Other Tax Expense (Benefit)
Deferred taxes
Deferred Income Tax Expense (Benefit)
Provision for income taxes
Income Tax Expense (Benefit)
Income before income taxes (controlling interest)
Income (Loss) from Continuing Operations before Income Taxes Attributable to Parent
This element represents the income or loss from continuing operations, before income taxes, which is attributable to the controlling interest.
Effective tax rate (controlling interest)
Income Tax Expense from Controlling Interest to Pretax, Income from Continued Operations Attributable to Controlling Interest Ratio
A ratio calculated by dividing the amount of income tax expense attributable to the controlling interest by pretax income from continuing operations attributable to the controlling interest.
Cost
Marketable Securities, Cost
Marketable Securities, Cost
Unrealized gains
Marketable Securities, Unrealized Gains
Marketable Securities, Unrealized Gains
Unrealized losses
Marketable Securities, Unrealized Losses
Marketable Securities, Unrealized Losses
Fair value
Marketable Securities
Statement of Financial Position [Abstract]
Assets
Assets [Abstract]
Cash and cash equivalents
Cash and Cash Equivalents, at Carrying Value
Receivables
Accounts Receivable, Net
Goodwill
Goodwill
Acquired client relationships (net)
Equity method investments in Affiliates (net)
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures
Fixed assets (net)
Property, Plant and Equipment, Net
Other investments and assets
Other Investments and Other Assets
Other Investments and Other Assets
Total assets
Assets
Liabilities and Equity
Liabilities and Equity [Abstract]
Payables and accrued liabilities
Accounts Payable and Accrued Liabilities
Senior debt
Long-term Debt
Convertible securities
Convertible Debt
Deferred income tax liability (net)
Deferred Income Tax Liabilities, Net
Other liabilities
Other Liabilities
Total liabilities
Liabilities
Commitments and contingencies (Note 5)
Commitments and Contingencies
Redeemable non-controlling interests
Redeemable Noncontrolling Interest, Equity, Carrying Amount
Equity:
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract]
Common stock ($0.01 par value, 153.0 shares authorized; 58.5 shares outstanding in 2017 and 2018)
Common Stock, Value, Issued
Additional paid-in capital
Additional Paid in Capital, Common Stock
Accumulated other comprehensive loss
Accumulated Other Comprehensive Income (Loss) Attributable to Parent, Net of Tax
Accumulated change in equity applicable to the parent entity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.
Retained earnings
Retained Earnings (Accumulated Deficit)
Total stockholders' equity before treasury stock
Stockholders' Equity before Treasury Stock
Less: Treasury stock, at cost (3.4 shares in 2017 and 5.8 shares in 2018)
Treasury Stock, Value
Total stockholders' equity
Stockholders' Equity Attributable to Parent
Non-controlling interests
Other Noncontrolling Interests
Total equity
Total liabilities and equity
Liabilities and Equity
Provisional one-time net benefit from changes in U.S. tax laws
Tax Cuts And Jobs Act of 2017, Incomplete Accounting, Provisional Income Tax Expense (Benefit)
Tax Cuts And Jobs Act of 2017, Incomplete Accounting, Provisional Income Tax Expense (Benefit)
Changes in provisional amount of initial one-time benefit recorded resulting from change in U.S. tax laws
Tax Cuts And Jobs Act Of 2017, Measurement Period Adjustment, Income Tax Expense (Benefit)
Tax Cuts And Jobs Act Of 2017, Measurement Period Adjustment, Income Tax Expense (Benefit)
Accumulated Other Comprehensive Income (Loss) [Table]
Accumulated Other Comprehensive Income (Loss) [Table]
Foreign Currency Translation Adjustment
Accumulated Foreign Currency Adjustment Including Portion Attributable to Noncontrolling Interest [Member]
Change in net realized and unrealized gain (loss) on derivative securities
Accumulated Net Gain (Loss) from Cash Flow Hedges Including Portion Attributable to Noncontrolling Interest [Member]
Change in net unrealized gain (loss) on investment securities
Accumulated Net Investment Gain (Loss) Including Portion Attributable to Noncontrolling Interest [Member]
Change in net unrealized gain (loss) on investment securities attributable to noncontrolling interest
Accumulated Net Investment Gain (Loss) Attributable to Noncontrolling Interest [Member]
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Pre-Tax
Other Comprehensive Income (Loss), before Tax
Tax Benefit (Expense)
Other Comprehensive Income (Loss), Tax
Other comprehensive income (loss)
Realized and Unrealized Gains (Losses) on Derivative Securities
Total
AOCI Including Portion Attributable to Noncontrolling Interest [Member]
Components of Accumulated other comprehensive income, net of taxes
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Other comprehensive income before reclassifications
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax
Amounts reclassified
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax
Schedule of Fair Value of Assets and Liabilities Measured on a Recurring Basis
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]
Schedule of Changes in Level 3 Assets and Liabilities
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]
Schedule of Quantitative Information used in Valuing Level 3 Liabilities
Fair Value Measurement Inputs and Valuation Techniques [Table Text Block]
Schedule of Investments in Certain Entities that Calculate Net Asset Value
Fair Value Measurement, Inputs Based on Net Assets [Table Text Block]
Tabular disclosure of investments that rely on net asset value as their fair value, including the nature of the investment and any related liquidation restrictions.
Schedule of Financial Assets and Liabilities Not Carried at Fair Value
Summary of Other Financial Liabilities Not Carried at Fair Value [Table Text Block]
Summary of Other Financial Liabilities Not Carried at Fair Value [Table Text Block]
Common stock, par value (in dollars per share)
Common Stock, Par or Stated Value Per Share
Common stock, shares authorized (in shares)
Common Stock, Shares Authorized
Common stock, shares outstanding (in shares)
Treasury stock, at cost (in shares)
Treasury Stock, Common, Shares
Dividends per share (in dollars per share)
Common Stock, Dividends, Per Share, Cash Paid
Subsequent Event [Table]
Subsequent Event [Table]
Subsequent Event Type [Axis]
Subsequent Event Type [Axis]
Subsequent Event Type [Domain]
Subsequent Event Type [Domain]
Subsequent Event
Subsequent Event [Member]
Subsequent Event [Line Items]
Subsequent Event [Line Items]
Schedule of Investments in Marketable Securities
Marketable Securities [Table Text Block]
Schedule of Equity Method Investments [Table]
Schedule of Equity Method Investments [Table]
Schedule of Equity Method Investments [Line Items]
Schedule of Equity Method Investments [Line Items]
Change in Equity Method Investments in Affiliates [Roll Forward]
Change in Equity Method Investments in Affiliates [Roll Forward]
Change in Equity Method Investments in Affiliates
Balance, as of December 31, 2017
Equity method earnings
Income (Loss) from Equity Method Investments Before Amortization of Intangibles
Income (Loss) from Equity Method Investments Before Amortization of Intangibles
Equity method intangible amortization and impairments
Equity Method Investment, Intangible Asset Amortization and Impairments
Equity Method Investment, Intangible Asset Amortization and Impairments
Distributions of earnings from equity method investments
Proceeds from Equity Method Investment, Distribution
Foreign currency translation
Equity Method Investment, Realized Gain (Loss) on Foreign Currency Translation
Equity Method Investment, Realized Gain (Loss) on Foreign Currency Translation
Other
Equity Method Investment, Other Increase (Decrease)
Equity Method Investment, Other Increase (Decrease)
Balance, as of September 30, 2018
Earnings Per Share
Earnings Per Share [Text Block]
Commitments and Contingencies
Commitments and Contingencies Disclosure [Text Block]
Goodwill [Roll Forward]
Goodwill [Roll Forward]
Balance, as of December 31, 2017
Foreign currency translation
Goodwill, Foreign Currency Translation Gain (Loss)
Balance, as of September 30, 2018
Schedule of Related Party Transactions, by Related Party [Table]
Schedule of Related Party Transactions, by Related Party [Table]
Prior Owner
Prior Owner [Member]
Prior Owner of entity
Related Party Transaction [Axis]
Related Party Transaction [Axis]
Related Party Transaction [Domain]
Related Party Transaction [Domain]
Private Equity Investment Partnerships of Affiliate
Private Equity Investment Partnerships of Affiliate [Member]
Private Equity Investment Partnerships of Affiliate [Member]
Balance Sheet Location [Axis]
Balance Sheet Location [Axis]
Balance Sheet Location [Domain]
Balance Sheet Location [Domain]
Other Liabilities
Other Liabilities [Member]
Related Party Transactions
Related Party Transaction [Line Items]
Contingent payment arrangements liability
Business Combination, Contingent Consideration, Liability
Schedule of Affiliate Equity Compensation
Summary of Affiliate Equity Compensation [Table Text Block]
Summary of Affiliate Equity Compensation [Table Text Block]
Schedule of Affiliate Equity Unrecognized Compensation Expense
Summary of Affiliate Equity Unrecognized Compensation Expense [Table Text Block]
Summary of Affiliate Equity Unrecognized Compensation Expense [Table Text Block]
Schedule of Changes in the Company's Interest in its Affiliates on the Controlling Interest's Equity
Schedule of Net Income (Loss) Attributable to Entity and Net Transfers with Noncontrolling Interest [Table Text Block]
Represents a schedule of net income (loss) attributable to the entity and net transfers to non-controlling interest.
Statement of Cash Flows [Abstract]
Cash flow from (used in) operating activities:
Net Cash Provided by (Used in) Operating Activities [Abstract]
Adjustments to reconcile Net income to net cash flow from operating activities:
Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract]
Intangible amortization and impairments
Depreciation and other amortization
Depreciation and Other Amortization
The aggregate expense charged against earnings to allocate the cost of tangible assets to periods in which the assets are used and held and to allocate the cost of issuing debt to periods in which the debt is outstanding. As a noncash expense, this element is added back to net income when calculating cash provided by (used in) operations using the indirect method.
Deferred income tax provision
Equity method income (net)
Income (Loss) from Equity Method Investments
Distributions of earnings received from equity method investments
Share-based compensation and Affiliate equity expense
Share-based Compensation
Other non-cash items
Other Noncash Income (Expense)
Changes in assets and liabilities:
Increase (Decrease) in Operating Capital [Abstract]
Increase in receivables
Increase (Decrease) in Accounts Receivable
Increase in other assets
Increase (Decrease) in Prepaid Expense and Other Assets
Increase in payables, accrued liabilities and other liabilities
Increase (Decrease) in Operating Liabilities
Cash flow from operating activities
Net Cash Provided by (Used in) Operating Activities
Cash flow from (used in) investing activities:
Net Cash Provided by (Used in) Investing Activities [Abstract]
Investments in Affiliates
Payments to Acquire Interest in Subsidiaries and Affiliates
Purchase of fixed assets
Payments to Acquire Property, Plant, and Equipment
Sale of investment securities
Payments for (Proceeds from) Investments
Cash flow from (used in) investing activities
Net Cash Provided by (Used in) Investing Activities
Cash flow from (used in) financing activities:
Net Cash Provided by (Used in) Financing Activities [Abstract]
Borrowings of senior debt
Proceeds from Issuance of Long-term Debt
Repayments of senior debt
Repayments of Long-term Debt
Repurchase of common stock
Payments for Repurchase of Common Stock
Issuance of common stock
Proceeds from Issuance of Common Stock
Dividends paid on common stock
Payments of Dividends
Distributions to non-controlling interests
Payments of Ordinary Dividends, Noncontrolling Interest
Affiliate equity issuances and repurchases
Proceeds from (Payments for) Affiliate Equity Issuances and Repurchases
The net cash inflow (outflow) resulting from the affiliate share transaction.
Other financing items
Proceeds from (Payments for) Other Financing Activities
Cash flow used in financing activities
Net Cash Provided by (Used in) Financing Activities
Effect of foreign currency exchange rate changes on cash and cash equivalents
Effect of Exchange Rate on Cash and Cash Equivalents
Net increase (decrease) in cash and cash equivalents
Cash and Cash Equivalents, Period Increase (Decrease)
Cash and cash equivalents at beginning of period
Cash and cash equivalents at end of period
Schedule of Changes in Redeemable Non-Controlling Interests
Redeemable Noncontrolling Interest [Table Text Block]
Other Assets
Other Assets [Member]
Distributions paid to affiliate partners
Payments to acquire interest in affiliates
Payments to Acquire Businesses and Interest in Affiliates
Issuance of interest in affiliates
Proceeds from Divestiture of Businesses and Interests in Affiliates
Due from affiliates
Due from Affiliates
Due to affiliates
Due to Affiliate
Schedule of Basic and Diluted Earnings Per Share
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
Schedule of Shares Excluded from Calculation of Basic and Diluted Earnings Per Share
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]
Income Taxes
Income Tax Disclosure [Text Block]
Fair Value, Measurements, Recurring
Other Investments
Other Investments [Member]
Assets
Derivative Asset, Fair Value, Gross Asset
Liabilities
Derivative Liability, Fair Value, Gross Liability
Affiliates accounted for under the equity method
Variable Interest Entities Previously Accounted for Under the Equity Method [Member]
Variable Interest Entities Previously Accounted for Under the Equity Method
Carrying Value and Maximum Exposure to Loss
Variable Interest Entity, Nonconsolidated, Comparison of Carrying Amount of Assets and Liabilities to Maximum Loss Exposure
Carrying amount and maximum exposure to loss equity method investmetns considered VREs
Equity Method Investments
Comprehensive Income
Comprehensive Income (Loss) Note [Text Block]
Restricted Stock Units
Restricted Stock Units (RSUs) [Member]
Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Unvested units at the beginning of the period (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number
Units granted (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period
Units vested (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period
Units forfeited (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period
Unvested units at the end of the period (in shares)
Weighted Average Grant Date Value
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Unvested units at the beginning of the period (in dollars per share)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value
Units granted (in dollars per share)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value
Units vested (in dollars per share)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value
Units forfeited (in dollars per share)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value
Unvested units at the end of the period (in dollars per share)
Restricted stocks granted, fair value
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value
Restricted stock, vesting period (in years)
Income Statement [Abstract]
Consolidated revenue
Revenue from Contract with Customer, Excluding Assessed Tax
Consolidated expenses:
Operating Expenses [Abstract]
Compensation and related expenses
Labor and Related Expense
Selling, general and administrative
Selling, General and Administrative Expense
Interest expense
Interest Expense
Other expenses (net)
Other Cost and Expense, Operating
Total consolidated expenses
Operating Expenses
Equity method income (net)
Investment and other income
Investment and Other Income (Loss)
The amount of income from cost method investments, foreign currency transaction gain or loss and other income recognized during the period.
Income tax expense
Net income
Net income (non-controlling interests)
Noncontrolling Interest in Net Income (Loss) Other Noncontrolling Interests, Redeemable
Net income (controlling interest)
Average shares outstanding (diluted) (in shares)
Earnings per share (basic) (in dollars per share)
Earnings Per Share, Basic
Earnings per share (diluted) (in dollars per share)
Earnings Per Share, Diluted
Fair Value, by Balance Sheet Grouping [Table]
Fair Value, by Balance Sheet Grouping [Table]
Measurement Basis [Axis]
Measurement Basis [Axis]
Fair Value Measurement [Domain]
Fair Value Measurement [Domain]
Portion at Fair Value Measurement
Portion at Fair Value Measurement [Member]
Carrying Value
Reported Value Measurement [Member]
Fair Value
Estimate of Fair Value Measurement [Member]
Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior notes
Notes Payable, Fair Value Disclosure
Convertible securities
Convertible Debt, Fair Value Disclosures
Investment, Name [Axis]
Investment, Name [Axis]
Investment, Name [Domain]
Investment, Name [Domain]
Investment One
Sole Significant Equity Method Affiliate [Member]
Sole Significant Equity Method Affiliate
Amortization expense during the period
Impairment recognized on equity method investment in affiliate
Equity Method Investment, Other than Temporary Impairment
Impairment recognized on equity method investment in affiliate, net of tax
Equity Method Investment, Other than Temporary Impairment, Net of Tax
Equity Method Investment, Other than Temporary Impairment, Net of Tax
Carrying value of equity method investment in affiliate
Revenue from equity method investment in affiliate
Equity Method Investment, Summarized Financial Information, Revenue
Net income from equity method investment in affiliate
Equity Method Investment, Summarized Financial Information, Net Income (Loss)
Statement of Comprehensive Income [Abstract]
Other comprehensive income (loss):
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest [Abstract]
Foreign currency translation gain (loss)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax
Change in net realized and unrealized gain (loss) on derivative securities, net of tax
Other Comprehensive Income (Loss), Derivative, Excluded Component, Increase (Decrease), after Adjustments and Tax
Change in net unrealized gain (loss) on investment securities, net of tax
Other Comprehensive Income (Loss), Securities, Available-for-sale, Adjustment, after Tax
Comprehensive income
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest
Comprehensive income (non-controlling interests)
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest
Comprehensive income (controlling interest)
Comprehensive Income (Loss), Net of Tax, Attributable to Parent
Equity Method Investments in Affiliates
Equity Method Investments and Joint Ventures Disclosure [Text Block]
Fair Value Measurement Inputs and Valuation Techniques [Table]
Fair Value Measurement Inputs and Valuation Techniques [Table]
Affiliate Equity Obligations
Valuation Approach and Technique [Axis]
Valuation Approach and Technique [Axis]
Valuation Approach and Technique [Domain]
Valuation Approach and Technique [Domain]
Discounted Cash Flow
Discounted Cash-Flow Valuation Technique [Member]
Represents the discounted cash flow technique used to measure fair value.
Measurement Input Type [Axis]
Measurement Input Type [Axis]
Measurement Input Type [Domain]
Measurement Input Type [Domain]
Growth rates
Measurement Input, Long-term Revenue Growth Rate [Member]
Discount rates
Measurement Input, Discount Rate [Member]
Quantitative information for Level 3 Fair Value Measurements Liabilities
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value liabilities
Financial and Nonfinancial Liabilities, Fair Value Disclosure
Contingent payment arrangements, measurement input
Contingent Payment Arrangement, Measurement Input
Contingent Payment Arrangement, Measurement Input
Affiliate equity repurchase obligations, measurement input
Obligations to Related Parties, Measurement Input
Obligations to Related Parties, Measurement Input
Decrease in controlling interest paid-in capital from Affiliate equity issuances
Adjustments to Additional Paid in Capital Increase (Decrease) in Carrying Amount of Redeemable Noncontrolling Interests
The increase (decrease) in additional paid-in capital of the reporting entity from purchases and sales of Affiliate equity.
Decrease in controlling interest paid-in capital from Affiliate equity repurchases
Adjustments to Additional Paid in Capital Decrease in Carrying Amount of Redeemable Noncontrolling Interests
Adjustments to Additional Paid in Capital Decrease in Carrying Amount of Redeemable Noncontrolling Interests
Net income (controlling interest) including the net impact of Affiliate equity transactions
Increase (Decrease) in Equity Due to Profit (Loss) and Net Transfers with Noncontrolling Interests
Increase (decrease) in equity during the period due to net income attributable to the parent company and net transfers with non-controlling interests.
Schedule of Unconsolidated Assets and Liabilities of Equity Method Investments and Company's Risk of Loss
Schedule of Variable Interest Entities [Table Text Block]
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Unexercised options outstanding at the beginning of the period (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number
Options granted (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross
Options exercised (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period
Options forfeited (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period
Unexercised options outstanding at the end of the period (in shares)
Exercisable at the end of the period (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number
Weighted Average Exercise Price
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Unexercised options outstanding at the beginning of the period (in dollars per share)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price
Options granted (in dollars per share)
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price
Options exercised (in dollars per share)
Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price
Options forfeited (in dollars per share)
Share-based Compensation Arrangements by Share-based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price
Unexercised options outstanding at the end of the period (in dollars per share)
Exercisable at the end of the period (in dollars per share)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price
Weighted Average Remaining Contractual Life (Years)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Weighted Average Remaining Contractual Life [Abstract]
-- None. No documentation exists for this element. --
Unexercised options outstanding at the end of the period (in years)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term
Exercisable at the end of the period (in years)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term
Investments, Debt and Equity Securities [Abstract]
Investments in marketable securities
Proceeds received from sales of marketable securities
Proceeds from Sale and Maturity of Marketable Securities
Net realized gains (losses) on sale of marketable securities
Marketable Securities, Realized Gain (Loss)
Share-based compensation
Allocated Share-based Compensation Expense
Tax benefit
Employee Service Share-based Compensation, Tax Benefit from Compensation Expense
Compensation expense related to share-based compensation
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized
Weighted average period over which compensation expense will be recognized
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition
Noncontrolling Interest [Table]
Noncontrolling Interest [Table]
Noncontrolling Interest [Line Items]
Noncontrolling Interest [Line Items]
Term of conditional right to put interest
Term Of Conditional Right to Put Interest
Term Of Conditional Right to Put Interest
Redeemable Noncontrolling Interest [Roll Forward]
Redeemable Noncontrolling Interest [Roll Forward]
-- None. No documentation exists for this element. --
Balance, as of December 31, 2017
Changes attributable to consolidated products
Noncontrolling Interest, Increase (decrease) Attributable to Consolidated Partnerships
Noncontrolling Interest, Increase (decrease) Attributable to Consolidated Partnerships
Transfers to Other liabilities
Noncontrolling Interest, Decrease from Transfers to Other Liabilities
Noncontrolling Interest, Decrease from Transfers to Other Liabilities
Transfers from Non-controlling interests
Changes in redemption value
Redeemable Noncontrolling Interest Change in Redemption Value
Increase (decrease) in redeemable non-controlling interests during the period as a result of a change in the redemption value.
Balance, as of September 30, 2018