Proceeds from sale of business Proceeds from Divestiture of Businesses Gain on equity method transaction Unrealized Gain (Loss) on Investments Dividends paid per common share (in dollars per share) Common Stock, Dividends, Per Share, Cash Paid Revision of Prior Period [Axis] Revision of Prior Period [Axis] Accumulated Amortization Finite-Lived Intangible Assets, Accumulated Amortization Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] Statistical Measurement [Domain] Statistical Measurement [Domain] Business Combination [Abstract] Business Combination [Abstract] Investments- Debt and Equity Securities Policy Investment, Policy [Policy Text Block] Thereafter Lessee, Operating Lease, Liability, to be Paid, after Year Five Expense from equity method transaction, net Gain (loss) on Investment, net of expenses Gain (loss) on Investment, net of expenses Net realized gains on sale of investments, reclassified from other comprehensive income Realized Investment Gains (Losses) Award Timing Predetermined Award Timing Predetermined [Flag] Description [Axis] Description [Axis] Description Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis] Entity File Number Entity File Number Additional Paid-In Capital Additional Paid-in Capital [Member] Equity in investments of unconsolidated entities Equity in investments of unconsolidated entities Income (Loss) from Equity Method Investments Severance and personnel expenses Severance and personnel expenses Severance and personnel expenses Tabular List, Table Tabular List [Table Text Block] Leases [Abstract] Leases [Abstract] Earnings Per Share, Basic [Abstract] Earnings Per Share, Basic [Abstract] Intangible Asset, Acquired, Finite-Lived [Line Items] Intangible Asset, Acquired, Finite-Lived [Line Items] Recent Accounting Pronouncements Policy New Accounting Pronouncements, Policy [Policy Text Block] Deferred revenue Deferred Revenue, Noncurrent Interest expense, net Interest Income (Expense), Nonoperating Debt Securities Debt Securities [Member] Investments in Unconsolidated Entities [Table] Investments in Unconsolidated Entities [Table] Investments in Unconsolidated Entities Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Measurement Basis [Axis] Measurement Basis [Axis] Basic (in dollars per share) Basic net income per share attributable to Morningstar, Inc. Earnings Per Share, Basic Adjustment to Compensation: Adjustment to Compensation [Axis] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Revenue Revenue from Contract with Customer [Text Block] Contract with Customer, Liability, Change in Timeframe, Performance Obligation Satisfied, Revenue Recognized Contract with Customer, Liability, Change in Timeframe, Performance Obligation Satisfied, Revenue Recognized Other comprehensive income (loss), net Other comprehensive income (loss), net Other Comprehensive Income (Loss), Net of Tax Schedule of Segment Reporting Information, by Segment Schedule of Segment Reporting Information, by Segment [Table Text Block] Current portion of long-term debt Short-Term Debt Revenue, Remaining Performance Obligation, Amount Revenue, Remaining Performance Obligation, Amount Adjustment to Compensation, Amount Adjustment to Compensation Amount Percentage of cash, cash equivalents and investments held by operations outside of US Concentration Risk, Percentage Revenue, Remaining Performance Obligation, Percentage Revenue, Remaining Performance Obligation, Percentage Technology-based assets Technology Based Assets [Member] Technology based assets, such as databases and websites. Letters of Credit, Maximum Amount Letters of Credit, Maximum Amount Letters of Credit, Maximum Amount Stock-based compensation expense Share-Based Payment Arrangement, Noncash Expense Foreign Earnings Repatriated Foreign Earnings Repatriated Employee Stock Option Share-Based Payment Arrangement, Option [Member] Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Contract with Customer, Liability Contract with Customer, Liability [Table Text Block] Contract with Customer, Liability Asset Impairment Charges Asset Impairment Charges Reconciliation of Select Segment Information to Consolidated [Table Text Block] Reconciliation of Select Segment Information to Consolidated [Table Text Block] Reconciliation of Select Segment Information to Consolidated Measurement Frequency [Axis] Measurement Frequency [Axis] Other comprehensive income (loss), net Other comprehensive income (loss): Other Comprehensive Income (Loss), Net of Tax [Abstract] Insider Trading Policies and 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and administrative General and Administrative Expense [Member] Weighted-Average Useful Life (years) Finite-Lived Intangible Asset, Useful Life Accounting Policies [Abstract] Accounting Policies [Abstract] Continental Europe Europe excluding the United Kingdom [Member] Europe excluding the United Kingdom [Member] Intangible assets, net Total Finite-Lived Intangible Assets, Net Lessee, Operating Lease, Liability, Maturity Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block] Concentration Risk Type [Domain] Concentration Risk Type [Domain] Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Debt Instrument [Line Items] Debt Instrument [Line Items] Purchases of investments in unconsolidated entities Payments to Acquire Other Investments Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Treasury Stock, Common Treasury Stock, Common [Member] Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Pay vs Performance Disclosure [Line Items] Present value of lease liabilities Operating Lease, Liability Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Morningstar Credit Segment Morningstar Credit Segment [Member] Morningstar Credit Segment Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Entity Shell Company Entity Shell Company Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block] Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block] Employee related liabilities, Current - Accrued Severance Employee related liabilities, Current - Accrued Severance Employee related liabilities, Current - Accrued Severance Other long-term liabilities Other Liabilities, Noncurrent Schedule of Long-term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] Deferred revenue Increase (Decrease) in Deferred Revenue Goodwill, impairment loss Goodwill, Impairment Loss Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Operating Segments Operating Segments [Member] Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Company Selected Measure Amount Company Selected Measure Amount 2021 Lessee, Operating Lease, Liability, to be Paid, Year Three Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Line of Credit Facility [Table] Line of Credit Facility [Table] Debt Issuance Costs, Gross Debt Issuance Costs, Gross Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition APIC, Share-Based Payment Arrangement, Increase for Cost Recognition [Abstract] Treasury Stock Treasury Stock [Text Block] Name Measure Name Letters of credit [Member] Letter of Credit [Member] Income Loss From Continuing Operations Before Income Taxes Domestic And Foreign Total Income Loss From Continuing Operations Before Income Taxes Domestic And Foreign Income Loss From Continuing Operations Before Income Taxes Domestic And Foreign Operating lease liabilities Operating Lease, Liability, Current Deferred tax liabilities, net Deferred Income Tax Liabilities, Net Document Fiscal Period Focus Document Fiscal Period Focus 2022 Share Repurchase Program 2022 Share Repurchase Program [Member] 2022 Share Repurchase Program Award Timing Method Award Timing Method [Text Block] Award Type [Axis] Award Type [Axis] Long-term debt Long-Term Debt Total assets Assets Remainder of 2026 (April 1 through December 31) Finite-Lived Intangible Asset, Expected Amortization, Year One Trading Symbol Trading Symbol Total Liability For Unrecognized Tax Benefits, Period Increase (Decrease) Total Liability For Unrecognized 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Measure Compensation Actually Paid vs. Other Measure [Text Block] Business Combination, Consideration Transferred Business Combination, Consideration Transferred Business Combination, Intangible Asset, Acquired, Finite-Lived Business Combination, Intangible Asset, Acquired, Finite-Lived [Table Text Block] Equity Method Investment, Other-than-Temporary Impairment Equity Method Investment, Other-than-Temporary Impairment 2029 Finite-Lived Intangible Asset, Expected Amortization, Year Four Entity Emerging Growth Company Entity Emerging Growth Company Morningstar Data and Analytics Segment Morningstar Data and Analytics Segment [Member] Morningstar Data and Analytics Segment Dividends declared (in dollars per share) Common Stock, Dividends, Per Share, Declared Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Deferred commissions, current and non-current Capitalized Contract Cost, Net Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Business Combination, Recognized Asset Acquired, Asset Business Combination, Recognized Asset Acquired, Asset Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year [Member] Fair Value, Inputs, Level 2 Fair Value, Inputs, Level 2 [Member] Morningstar Indexes [Member] Morningstar Indexes [Member] Morningstar Indexes Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Business Combination [Domain] Business Combination [Domain] Common Stock, Shares, Outstanding (in shares) Balance (in shares) Balance (in shares) Common Stock, Shares, Outstanding Provision for credit losses Accounts Receivable, Credit Loss Expense (Reversal) PEO PEO [Member] Disaggregation of Revenue Disaggregation of Revenue [Table Text Block] Proceeds from maturities and sales of investment securities Proceeds from Sale, Maturity and Collection of Investments Income before income taxes and equity in investments of unconsolidated entities Income before income taxes and equity in net income (loss) of unconsolidated entities Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest United States United States UNITED STATES Corporate and Other Corporate Segment and Other Operating Segment [Member] October 2025 Term Facility -A1 [Member] October 2025 Term Facility -A1 [Member] October 2025 Term Facility -A1 Changes in operating assets and liabilities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract] Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year [Member] Schedule of Expected Amortization Expense Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] Total Stock Repurchased Under Current Program, amount Total Stock Repurchased Under Current Program, amount Total Stock Repurchased Under Current Program, amount Retained Earnings Retained Earnings [Member] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Restatement Determination Date Restatement Determination Date Share-based Payment Arrangement [Abstract] Share-Based Payment Arrangement [Abstract] Cash and cash equivalents Cash and cash equivalents—beginning of period Cash and cash equivalents—end of period Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Income Statement: Income Statement [Abstract] Income tax expense Income Tax Expense (Benefit) Basis spread on variable rate debt Debt Instrument, Basis Spread on Variable Rate Long-term debt, outstanding Long-term debt, outstanding Long-term debt, outstanding Purchases of investment securities Payments to Acquire Marketable Securities Income tax payable Taxes Payable, Current Investments, Fair Value Disclosure Investments, Fair Value Disclosure Term Loan Facility [Member] Term Loan Facility [Member] Term Loan Facility [Member] Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Subsegments [Axis] Subsegments [Axis] Product and Service [Domain] Product and Service [Domain] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Subsegments Consolidation Items [Domain] Subsegments Consolidation Items [Domain] September 30, 2022, Credit Agreement Second Amendment September 30, 2022, Credit Agreement Second Amendment [Member] September 30, 2022, Credit Agreement Second Amendment Consolidated net income Consolidated net income Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Unrealized loss on available-for-sale investments 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Receivable [Table Text Block] Investing activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] General and administrative General and Administrative Expense Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Cash provided by operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Debt Instrument, Term Debt Instrument, Term Revenues from External Customers and Long-Lived Assets [Line Items] Revenues from External Customers and Long-Lived Assets [Line Items] Subsequent Event Subsequent Event [Member] Cost of revenue Cost of Sales [Member] Equity Securities, FV-NI Equity Securities, FV-NI Goodwill Goodwill, Beginning Balance Goodwill, Ending Balance Goodwill Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] Lease, Cost Lease, Cost [Table Text Block] PEO Total Compensation Amount PEO Total Compensation Amount Depreciation Depreciation Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Gain on equity method transaction Gain (Loss) on Investments Equity Components [Axis] Equity Components [Axis] Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Concentration Risk [Table] Concentration Risk [Table] Accounts payable and accrued liabilities Accounts Payable and Accrued Liabilities, Excluding Employee Related Liabilities, Current Total of the carrying values as of the balance sheet date of liabilities incurred and accounts payable excluding employee related liabilities (generally due within one year of the balance sheet date). Number of Reportable Segments Number of Reportable Segments Business Combination, Recognized Asset Acquired, Other Asset, Current and Non-current Business Combination, Recognized Asset Acquired, Other Asset, Current and Non-current Business Combination, Recognized Asset Acquired, Other Asset, Current and Non-current Supplemental disclosure of cash flow information Supplemental Cash Flow Information [Abstract] Business Combination, Recognized Asset Acquired, Receivable, Current Business Combination, Recognized Asset Acquired, Receivable, Current Other Performance Measure, Amount Other Performance Measure, Amount Entity Address, State or Province Entity Address, State or Province Stock-based compensation APIC, Share-Based Payment Arrangement, Restricted Stock Unit, Increase for Cost Recognition Dividends declared Dividends, Common Stock Total current liabilities Liabilities, Current Effective Income Tax Rate Reconciliation, Amount [Abstract] Income Tax Expense (Benefit), Effective Income Tax Rate Reconciliation, Amount [Abstract] Individual: Individual [Axis] Other current assets Other Assets, Current Additional paid-in capital Additional Paid in Capital, Common Stock Cash used for investing activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Investments in unconsolidated entities Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures Revenue performance period Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member] Gain on sale of business Gain on sale of business Gain (Loss) on Disposition of Business Cash paid for interest Interest Paid, Excluding Capitalized Interest, Operating Activity Document Fiscal Year Focus Document Fiscal Year Focus Operating lease assets Consolidated operating lease assets Operating Lease, Right-of-Use Asset Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Effective income tax rate Effective Income Tax Rate Reconciliation, Percent Entity Interactive Data Current Entity Interactive Data Current Operating lease expense Operating Lease, Cost Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] Expected amortization period (months) Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Equity [Abstract] Equity [Abstract] Unallocated Corporate Expenses Unallocated Corporate Expenses Unallocated Corporate Expenses Schedule Of Compensation Cost By Expense Category Schedule Of Compensation Cost For Share-based Payment Arrangements, Allocation Of Share-based Compensation Costs By Expense Category [Table Text Block] Schedule Of Compensation Cost For Share-based Payment Arrangements, Allocation Of Share-based Compensation Costs By Expense Category [Table Text Block] Investment Owned, Cost Investment Owned, Cost Segment and Geographical Area Information Segment Reporting Disclosure [Text Block] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Increase (Decrease) in Stockholders' Equity Increase (Decrease) in Stockholders' Equity [Roll Forward] Finite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] May 2022 Revolving Credit Facility May 2022 Revolving Credit Facility [Member] May 2022 Revolving Credit Facility Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] Contingent consideration liability Business Combination, Contingent Consideration, Liability Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Table] Fair Value, Recurring and Nonrecurring [Table] Amortization expense Amortization expense Amortization of Intangible Assets Lessee, Leases Lessee, Leases [Policy Text Block] Deferred tax assets, net Deferred Income Tax Assets, Net Shares repurchased, value Stock Repurchased During Period, Value Depreciation and amortization Depreciation, Depletion and Amortization Other assets Other Assets, Noncurrent Entity Central Index Key Entity Central Index Key PEO Name PEO Name Schedule of Revenues from External Customers and Long-Lived Assets [Table] Schedule of Revenues from External Customers and Long-Lived Assets [Table] Currency translation adjustment Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax Revenue External revenue Revenues License-based Licensed-based Revenue Licensed-Based [Member] Licensed-Based Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year [Member] July 2019 Revolving Credit Facility [Member] July 2019 Revolving Credit Facility [Member] July 2019 Revolving Credit Facility [Member] Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Revolving Credit Facility Revolving Credit Facility [Member] Arrangement Duration Trading Arrangement Duration Schedule of Segment Reporting Information, by Segment Schedule of Segment Reporting Information, by Segment [Table] Accounts payable and accrued liabilities Contract with Customer, Liability, Current Goodwill, Fair Value Disclosure Goodwill, Fair Value Disclosure Sale of Stock, Percentage of Ownership after Transaction Sale of Stock, Percentage of Ownership after Transaction Segments [Axis] Segments [Axis] Accounts payable and accrued liabilities Increase (Decrease) in Accounts Payable and Accrued Liabilities, Excluding Employee Related Liabilities The net change during the reporting period in the aggregate amount of obligations and expenses incurred but not paid, excluding employee related liabilities. Exercise Price Award Exercise Price Entity Filer Category Entity Filer Category Local Phone Number Local Phone Number Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Common Stock, No Par Value (in dollars per share) Common Stock, No Par Value Other, net Payment for (Proceeds from) Other Investing Activity Subsequent Event Type [Axis] Subsequent Event Type [Axis] Stock-Based Compensation Share-Based Payment Arrangement [Text Block] Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Excluding Goodwill Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Excluding Goodwill Business Combination, Recognized Asset Acquired, Cash and Cash Equivalent Business Combination, Recognized Asset Acquired, Cash and Cash Equivalent CommonStockSharesIssuedNotDisclosed CommonStockSharesIssuedNotDisclosed CommonStockSharesIssuedNotDisclosed Assets: Assets [Abstract] Long-term debt Long-Term Debt, Excluding Current Maturities Shares repurchased, cumulative (in shares) Stock Repurchased, Cumulative, Shares Stock Repurchased, Cumulative, Shares Credit Facility [Axis] Credit Facility [Axis] Underlying Security Market Price Change Underlying Security Market Price Change, Percent 2028 Finite-Lived Intangible Asset, Expected Amortization, Year Three Debt Instrument [Axis] Debt Instrument [Axis] Fair Value Disclosures Fair Value Disclosures [Text Block] Business Combination [Line Items] Business Combination [Line Items] Gross Finite-Lived Intangible Assets, Gross Credit Facility [Domain] Credit Facility [Domain] Morningstar, Inc. shareholders’ equity: Equity, Attributable to Parent [Abstract] Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member] Entity Address, Address Line One Entity Address, Address Line One Common shares repurchased Treasury Stock, Value, Acquired, Cost Method Accumulated Other Comprehensive Loss AOCI Attributable to Parent [Member] Debt Instrument, Interest Rate, Stated Percentage Debt Instrument, Interest Rate, Stated Percentage Allowance for doubtful accounts receivable Accounts Receivable, Allowance for Credit Loss, Current Operating lease liabilities Operating Lease, Liability, Noncurrent Unrecognized Tax Benefits, Period Increase (Decrease) Unrecognized Tax Benefits, Period Increase (Decrease) Business Combination, Asset Acquisition, Transaction between Entities under Common Control, and Joint Venture Formation [Abstract] Sale of Stock, Consideration Received Per Transaction Sale of Stock, Consideration Received Per Transaction Fair Value as of Grant Date Award Grant Date Fair Value Entity Registrant Name Entity Registrant Name Decrease in income tax expense upon recognition of gross unrecognized tax benefits Decrease in Income Tax Expense Upon Recognition of Gross Unrecognized Tax Benefits Decrease in income tax expense upon recognition of gross unrecognized tax benefits. Compensation Expense, Excluding Cost of Good and Service Sold Compensation Expense, Excluding Cost of Good and Service Sold Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Summary of Total Debt and Long-term Debt Schedule of Long-Term Debt Instruments [Table Text Block] Net effect of dilutive stock options and restricted stock units Incremental Common Shares Attributable to Dilutive Effect of Share-Based Payment Arrangements Total operating expense Costs and Expenses Income Tax Expense (Benefit), Increase/Decrease vs Prior Year Income Tax Expense (Benefit), Change from Prior Year Income Tax Expense (Benefit), Change from Prior Year Unrecognized stock-based compensation expense Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount Document Quarterly Report Document Quarterly Report Segment, Reconciliation of Other Items from Segments to Consolidated Segment, Reconciliation of Other Items from Segments to Consolidated [Table Text Block] Revision of Prior Period [Domain] Revision of Prior Period [Domain] Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] Counterparty Name [Domain] Counterparty Name [Domain] Equity Securities without Readily Determinable Fair Value, Amount Equity Securities without Readily Determinable Fair Value, Amount 2020 Lessee, Operating Lease, Liability, to be Paid, Year Two Number of Operating Segments Number of Operating Segments Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Credit Agreement [Member] Credit Agreement [Member] Credit Agreement [Member] Title Trading Arrangement, Individual Title Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Schedule of Intangible Assets Schedule of Finite-Lived Intangible Assets [Table Text Block] Repayment of revolving credit facility Repayments of Long-Term Lines of Credit Restatement Determination Date: Restatement Determination Date [Axis] Effective tax rate Effective Income Tax Rate Reconciliation Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Payments to Acquire Businesses, Gross Payments to Acquire Businesses, Gross Non-PEO NEO Non-PEO NEO [Member] Business Combination, Recognized Liability Assumed, Deferred Revenue, Current Business Combination, Recognized Liability Assumed, Deferred Revenue, Current Other, net Proceeds from (Payment for) Other Financing Activity Name Trading Arrangement, Individual Name Award Type [Domain] Award Type [Domain] Transaction-based Transaction-Based [Member] Transaction-Based [Member] Remainder of 2019 Lessee, Operating Lease, Liability, to be Paid, Year One Business Combination, Contingent Consideration Expense Business Combination, Contingent Consideration Expense Business Combination, Contingent Consideration Expense Equity Awards Adjustments Equity Awards Adjustments [Member] Other, net Other Noncash Income (Expense) Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Unrecognized Tax Benefits Included In Non Current Liabilities Unrecognized Tax Benefits Included In Non Current Liabilities Unrecognized Tax Benefits Included In Non Current Liabilities Canada CANADA Compensation Amount Outstanding Recovery Compensation Amount Subsegments [Domain] Subsegments [Domain] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Estimate of Fair Value Measurement Estimate of Fair Value Measurement [Member] Accrued compensation and deferred commissions Increase (Decrease) in Employee Related Liabilities Issuance of common stock related to vesting of stock awards, net of shares withheld for taxes on settlements of stock awards Stock Issued During Period, Value, Stock Options Exercised and Vesting of Restricted Stock The value of additional paid in capital recognized for stock issued upon vesting of restricted stock awards and exercise of stock options. Share Repurchase Program [Axis] Share Repurchase Program [Axis] MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Restricted Stock Units and Performance Share Awards Restricted Stock Units and Performance Share Awards [Member] Restricted Stock Units and Performance Share Awards [Member] Name Awards Close in Time to MNPI Disclosures, Individual Name Business Combination, Acquisition and Integration Related Costs Business Combination, Acquisition and Integration Related Costs Business Combination, Acquisition and Integration Related Costs Australia AUSTRALIA Investments in Unconsolidated Entities [Line Items] Investments in Unconsolidated Entities [Line Items] Investments in Unconsolidated Entities Segment, Reconciliation of Other Items from Segments to Consolidated [Line Items] Segment, Reconciliation of Other Items from Segments to Consolidated [Line Items] Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous 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