Business Combinations
Business Combinations Policy [Policy Text Block]
Granted (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period
Summary of Stock Option Activity
Schedule of Stock Options Roll Forward [Table Text Block]
Purchased intangible assets, including acquired technology
Deferred Tax Liabilities, Intangible Assets
Document Type
Document Type
ICFR Auditor Attestation Flag
ICFR Auditor Attestation Flag
Outstanding, aggregate intrinsic value
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value
Total other expense
Other Nonoperating Income (Expense)
Stock options granted (in shares)
Granted (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross
Commitments and Contingencies
Commitments and Contingencies Disclosure [Text Block]
Retirement of treasury shares (in shares)
Retirement of treasury shares (in shares)
Treasury Stock, Shares, Retired
Treasury Stock
Treasury Stock [Member]
Accounts payable and accrued expenses
Increase (Decrease) in Accounts Payable and Accrued Liabilities
Employee Benefit Plans
Retirement Benefits [Text Block]
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
Components of Other Comprehensive Loss
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]
Increase in the number of shares available for issuance
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized
Share repurchase program
Share Repurchase Program [Member]
Represents information related to the Share Repurchase Program.
Level 3
Fair Value, Inputs, Level 3 [Member]
Leases
Lessee, Leases [Policy Text Block]
Derivative instruments
Derivative Asset
Statistical Measurement [Domain]
Statistical Measurement [Domain]
Risks and Uncertainties [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Deferred taxes
Deferred Income Tax Liabilities, Net
Derivative Instruments
Derivative Instruments and Hedging Activities Disclosure [Text Block]
Security Exchange Name
Security Exchange Name
Intangible assets, net
Net Carrying Amount
Intangible Assets, Net (Excluding Goodwill)
Fair value as a percentage of exercise price
Share-based Compensation Arrangement by Share-based Payment Award, Discount from Market Price, Purchase Date
Proceeds from debt
Proceeds from Issuance of Long-term Debt
Operating income
Segment operating profit
Operating income
Operating Income (Loss)
Retirement of Treasury Shares
Carrying value of repurchased shares
Treasury Stock, Retired, Cost Method, Amount
Total current liabilities
Liabilities, Current
Performance-based options
Performance-based
PSUs
Performance Shares [Member]
Prepaid expenses and other current assets
Prepaid Expense and Other Assets, Current
Balance (in dollars per share)
Balance (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
Variable Rate [Domain]
Variable Rate [Domain]
Variable Rate [Axis]
Variable Rate [Axis]
Commitments and Contingencies
Commitments and Contingencies
Participant contribution (up to) (as a percent)
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent
Vested and exercisable, weighted average remaining contractual life
Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Vested And Exercisable, Weighted Average Remaining Contractual Term
Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Vested And Exercisable, Weighted Average Remaining Contractual Term
Repurchase of common stock
Payments for Repurchase of Common Stock
ASSETS
Assets [Abstract]
Property, Plant and Equipment [Table]
Property, Plant and Equipment [Table]
Award vesting period
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period
Accounting Policies [Abstract]
Accounting Policies [Abstract]
Thereafter
Lessee, Operating Lease, Liability, to be Paid, after Year Five
Furniture and fixtures
Furniture and Fixtures [Member]
Entity Address, State or Province
Entity Address, State or Province
Previously granted awards vested (in shares)
Vested (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period
Proceeds from employee stock plans
Proceeds from Stock Plans
Cash paid for amounts included in the measurement of lease liabilities
Operating Lease, Payments
Foreign currency translations
Goodwill, Foreign Currency Translation Gain (Loss)
Retained earnings
Retained Earnings (Accumulated Deficit)
Lease right-of-use assets, net
ROU assets, net of amortization
ROU assets
Operating Lease, Right-of-Use Asset
Depreciation on property, equipment and leasehold improvements
Deferred Tax Liabilities, Property, Plant and Equipment
Expected to vest (in dollars per share)
Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Expected To Vest, Weighted Average Exercise Price
Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Expected To Vest, Weighted Average Exercise Price
Weighted average useful life
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life
2021
Lessee, Operating Lease, Liability, to be Paid, Year One
Repurchase of common stock (in shares)
Repurchase of common stock (in shares)
Treasury Stock, Shares, Acquired
Balance (in shares)
Balance (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number
2024
Lessee, Operating Lease, Liability, to be Paid, Year Four
Canceled/forfeited
Shares Issued, Shares, Share-based Payment Arrangement, Forfeited
Assets and Liabilities Measured at Fair Value
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]
Unrecognized compensation expense
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount
Customer [Axis]
Customer [Axis]
U.S. state and local
Current State and Local Tax Expense (Benefit)
Balance (in shares)
Balance (in shares)
Shares, Outstanding
Undiscounted future rent payments for leases that have not commenced
Lessee, Operating Lease, Lease Not Yet Commenced, Undiscounted Amount
Lessee, Operating Lease, Lease Not Yet Commenced, Undiscounted Amount
Preferred stock, $0.01 par value, 10,000,000 shares authorized, none issued
Preferred Stock, Value, Issued
Income and Deferred Taxes
Income Tax, Policy [Policy Text Block]
Hedging Designation [Domain]
Hedging Designation [Domain]
Common stock, par value (in dollars per share)
Common Stock, Par or Stated Value Per Share
Other non-current liabilities
Other Liabilities, Noncurrent
Deferred taxes
Deferred Income Tax Assets, Net
Other comprehensive income, net of tax:
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent [Abstract]
Stock-based compensation
APIC, Share-based Payment Arrangement, Increase for Cost Recognition
Effect of exchange rate changes on cash and cash equivalents
Effect of Exchange Rate on Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents
One-time transition tax expense (benefit)
Effective Income Tax Rate Reconciliation, Tax Cuts and Jobs Act, Transition Tax on Accumulated Foreign Earnings, Amount
Unbilled accounts receivable
Unbilled Receivables, Current
Revenue
Revenue from clients
Revenue from Contract with Customer, Excluding Assessed Tax
Measurement Frequency [Domain]
Measurement Frequency [Domain]
Exercise price (in dollars per share)
Share Price
Lender Name [Axis]
Lender Name [Axis]
Investments
Investment, Policy [Policy Text Block]
Concentration risk (as a percent)
Concentration Risk, Percentage
Geographical [Domain]
Geographical [Domain]
Expiration period
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period
Dividends per Share of Common Stock (in dollars per share)
Regular quarterly dividend (in dollars per share)
Dividends Payable, Amount Per Share
Statement [Line Items]
Statement [Line Items]
Non-U.S.
Deferred Foreign Income Tax Expense (Benefit)
Deferred income taxes
Increase (Decrease) in Deferred Income Taxes
Estimated pre-tax derivative gains to be reclassified in next 12 months
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Net Amount to be Transferred
Computers and related equipment
Computer Equipment [Member]
Income before income taxes
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest [Abstract]
Major Supplier [Domain]
Major Supplier [Domain]
Major Supplier
Entity Voluntary Filers
Entity Voluntary Filers
Statement [Table]
Statement [Table]
Thereafter
Finite-Lived Intangible Asset, Expected Amortization, after Year Five
Statistical Measurement [Axis]
Statistical Measurement [Axis]
Credit Facility [Axis]
Credit Facility [Axis]
Amortization of lease right-of-use assets
Operating Lease, Right-of-Use Asset, Amortization Expense
Preferred stock, issued (in shares)
Preferred Stock, Shares Issued
One-time transition tax from TCJA
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Percent
Proceeds from maturity or sale of investments
Payments for (Proceeds from) Short-term Investments
Weighted Average Shares Outstanding
Schedule of Weighted Average Number of Shares [Table Text Block]
Fair Value Amounts of Derivative Instruments and Gains
Schedule of Derivatives Instruments Statements of Financial Performance and Financial Position, Location [Table Text Block]
India
INDIA
(Loss) Gain Reclassified from AOCL into Income (Effective Portion)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax
Entity Small Business
Entity Small Business
Domestic production activities deduction
Effective Income Tax Rate Reconciliation, Deduction, Qualified Production Activity, Percent
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Loan origination fees
Unamortized Debt Issuance Expense
Fair Value Hierarchy and NAV [Domain]
Fair Value Hierarchy and NAV [Domain]
Share Repurchase Program [Domain]
Share Repurchase Program [Domain]
SG&A
Selling, General and Administrative Expenses [Member]
Share-based payments
Effective Income Tax Rate Reconciliation, Tax Expense (Benefit), Share-based Payment Arrangement, Percent
Goodwill [Roll Forward]
Goodwill [Roll Forward]
Hedging Position and Corresponding Fair Values
Schedule of Foreign Exchange Contracts, Statement of Financial Position [Table Text Block]
Amendment Flag
Amendment Flag
Summary of Share-based Awards Available for Grant
Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block]
Finite-Lived Intangible Assets, Major Class Name [Domain]
Finite-Lived Intangible Assets, Major Class Name [Domain]
2019 Revolving Credit Facility
The 2019 Revolving Credit Facility [Member]
Represents information about the 2017 Revolving Credit Facility.
Research and Product Development Costs
Research and Development Expense, Policy [Policy Text Block]
Deferred tax assets:
Deferred Tax Assets, Gross [Abstract]
Non-employee directors
Share-based Payment Arrangement, Nonemployee [Member]
Number of shares available for future grant
Balance
Balance
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant
Purchase commitments with suppliers
Purchase Commitment, Remaining Minimum Amount Committed
Borrowing from revolving credit facility
Borrowing from revolving credit facility
Long-term Line of Credit
Accumulated unrealized losses on cash flow hedges, net of tax
AOCI, Cash Flow Hedge, Cumulative Gain (Loss), after Tax
Fair Value Measurements
Fair Value Measurement, Policy [Policy Text Block]
New York Stock Exchange
NEW YORK STOCK EXCHANGE, INC. [Member]
Net cash provided by operating activities
Net Cash Provided by (Used in) Operating Activities
Entity Central Index Key
Entity Central Index Key
Measurement Frequency [Axis]
Measurement Frequency [Axis]
Acquired software technology
Computer Software, Intangible Asset [Member]
Number of reporting units
Number of segments
Number of Reporting Units
United Kingdom
UNITED KINGDOM
Derivative Instrument [Axis]
Derivative Instrument [Axis]
Financial Instruments [Domain]
Financial Instruments [Domain]
Finite-Lived Intangible Assets by Major Class [Axis]
Finite-Lived Intangible Assets by Major Class [Axis]
Other non-current liabilities
Other Noncurrent Liabilities [Member]
Identifiable Intangible Assets
Schedule of Finite-Lived Intangible Assets [Table Text Block]
Fair Value Measurement [Domain]
Fair Value Measurement [Domain]
Derivative Instruments
Derivatives, Policy [Policy Text Block]
Geographical [Axis]
Geographical [Axis]
Subsequent Events
Subsequent Events [Text Block]
Foreign derived intangible income ("FDII") deduction
Effective Income Tax Rate Reconciliation, Deduction, Percent
Statement of Cash Flows [Abstract]
Taxes payable
Accrued Income Taxes, Noncurrent
Property, Plant and Equipment, Type [Axis]
Long-Lived Tangible Asset [Axis]
ESPP
Employee Stock [Member]
Balance at Beginning of Year
Balance at End of Year
SEC Schedule, 12-09, Valuation Allowances and Reserves, Amount
Restricted stock and PSUs
Restricted Stock And Performance Shares [Member]
Restricted Stock And Performance Shares
Income Statement Location [Axis]
Income Statement Location [Axis]
Accounts receivable, reserves
Accounts Receivable, Allowance for Credit Loss, Current
Entity Common Stock, Shares Outstanding
Entity Common Stock, Shares Outstanding
Income Statement Location [Domain]
Income Statement Location [Domain]
2022
Lessee, Operating Lease, Liability, to be Paid, Year Two
CASH FLOWS FROM FINANCING ACTIVITIES
Net Cash Provided by (Used in) Financing Activities [Abstract]
Purchase period
Share-Based Compensation Arrangement By Share-Based Payment Award, Offering Period
Share-Based Compensation Arrangement By Share-Based Payment Award, Offering Period
Selling, general and administrative
Selling, General and Administrative Expense
U.S. federal
Current Federal Tax Expense (Benefit)
Gross notional value
Derivative, Notional Amount
Amortization expense
Amortization of Intangible Assets
Revenue from Countries That Are 10% Or More of Revenues
Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area [Table Text Block]
Foreign currency forward contracts
Foreign Exchange Contract [Member]
Schedule of Other Information Related to Leases
Lease, Cost [Table Text Block]
Data content
Data Content [Member]
Represents information related to data content.
Exchange [Domain]
Exchange [Domain]
Prepaid taxes
Prepaid Taxes
2023
Lessee, Operating Lease, Liability, to be Paid, Year Three
Other assets
Other Assets, Noncurrent
Plan Name [Axis]
Plan Name [Axis]
Segment Information
Segment Reporting Disclosure [Text Block]
Corporate money market funds
Cash and Cash Equivalents, Fair Value Disclosure
Concentration Risk [Table]
Concentration Risk [Table]
TOTAL ASSETS
Assets
Assets
Interest expense
Interest Expense, Debt
Unvested and outstanding (in shares)
Balance (in shares)
Balance (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number
Title of 12(b) Security
Title of 12(b) Security
Repurchase of common stock from employees
Repurchase of Common Stock from Employees [Member]
Represents information pertaining to the repurchase of common stock from employees.
Total
Finite-Lived Intangible Assets, Net
Long-lived assets
Long-Lived Assets
Weighted average estimated fair value (in dollars per share)
Weighted average estimated 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
Antidilutive Securities [Axis]
Antidilutive Securities [Axis]
Certificates of deposit
Certificates Of Deposit
Fair value portion of certificates of deposit.
Concentrations of Risk
Concentration Risk, Credit Risk, Policy [Policy Text Block]
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Depreciation and amortization
Depreciation, Depletion and Amortization
Components of the Provision for Income Taxes
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]
Minimum amount of additional borrowings
Line Of Credit Facility Minimum Borrowing Amount Required For Additional Borrowings
The minimum borrowing amount that is required for the Company to arrange for additional borrowings with the lender under the credit facility.
TOTAL LIABILITIES
Liabilities
Number of share equivalents
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Share Equivalent
Represents the option share equivalent of an equity instrument other than options.
Other assets
Other Noncurrent Assets [Member]
Weighted average period for recognition
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition
Term structure of volatility
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate
Imputed Interest
Lessee, Operating Lease, Liability, Undiscounted Excess Amount
Outstanding, weighted average remaining contractual term
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term
Treasury Stock
Treasury Stock [Policy Text Block]
Disclosure of accounting policy for treasury stock.
Income available to common stockholders, Net Income (Numerator)
Net Income (Loss) Available to Common Stockholders, Basic
Commitments and Contingencies Disclosure [Abstract]
Level 1
Fair Value, Inputs, Level 1 [Member]
Operating lease expense
Operating Lease, Expense
Gain (Loss) Recognized in AOCL on Derivatives (Effective Portion)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax
Weighted average interest rate including the effects of swap agreement
Debt, Weighted Average Interest Rate
Currency exposure (as a percent)
Percent Of Foreign Exchange Contracts Hedged
Represents the percent of foreign exchange contracts hedged.
Fair Value, Recurring and Nonrecurring [Table]
Fair Value, Recurring and Nonrecurring [Table]
Number Outstanding
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Other, net
Increase (Decrease) in Other Operating Assets and Liabilities, Net
Debt Instrument [Axis]
Debt Instrument [Axis]
Additional Paid-in Capital
Additional Paid-in Capital [Member]
Antidilutive Securities, Name [Domain]
Antidilutive Securities, Name [Domain]
Unaudited Quarterly Financial Data
Quarterly Financial Information [Table Text Block]
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue [Line Items]
Class of Stock [Line Items]
Class of Stock [Line Items]
Asset Class [Axis]
Asset Class [Axis]
Repurchases of common stock
Repurchases of common stock
Treasury Stock, Value, Acquired, Cost Method
Lease liabilities, net
Increase (Decrease) In Operating Lease Liabilities
Increase (Decrease) In Operating Lease Liabilities
Derivative instruments
Derivative Liability
Adjustments to reconcile net income to net cash provided by operating activities
Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract]
Accounts payable and accrued expenses
Accounts Payable and Accrued Liabilities [Member]
Revenue from Contract with Customer [Abstract]
Common stock, outstanding (in shares)
Balance (in shares)
Balance (in shares)
Common Stock, Shares, Outstanding
Entity Information [Line Items]
Entity Information [Line Items]
Income Tax Disclosure [Abstract]
Occupancy costs
Variable Lease, Cost
Revolving Credit Facility
Revolving Credit Facility [Member]
Schedule of Goodwill [Table]
Schedule of Goodwill [Table]
Philippines
PHILIPPINES
Research and product development costs
Research and Development Expense
Other, net
Effective Income Tax Rate Reconciliation, Other Adjustments, Percent
Balance (in dollars per share)
Balance (in dollars per share)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price
Comprehensive Income
Comprehensive Income, Policy [Policy Text Block]
Reclassification
Reclassification, Comparability Adjustment [Policy Text Block]
Standby letters of credit issued
Letters of Credit Outstanding, Amount
Acquisition of businesses and investments, net of cash and cash equivalents acquired
Payments to Acquire Businesses, Net of Cash Acquired
Common stock, authorized (in shares)
Common Stock, Shares Authorized
Concentration Risk Type [Axis]
Concentration Risk Type [Axis]
Subtotal
Property, Plant and Equipment, Gross
U.S. federal
Deferred Federal Income Tax Expense (Benefit)
Revenue Recognition
Revenue [Policy Text Block]
Results of Operations and Total Assets
Schedule of Segment Reporting Information, by Segment [Table Text Block]
Goodwill
Goodwill and Intangible Assets, Goodwill, Policy [Policy Text Block]
Accounts Receivable and Deferred Fees
Accounts Receivable and Deferred Fees [Policy Text Block]
Disclosure of accounting policy for accounts receivable and deferred fees.
Aggregate Intrinsic Value
Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Aggregate Intrinsic Value [Abstract]
Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Aggregate Intrinsic Value
Accrued compensation
Increase (Decrease) in Employee Related Liabilities
Estimate of Fair Value Measurement
Estimate of Fair Value Measurement [Member]
Income Statement [Abstract]
Accumulated Other Comprehensive Loss
AOCI Attributable to Parent [Member]
Long-term lease liabilities
Operating Lease, Liability, Noncurrent
2024
Finite-Lived Intangible Asset, Expected Amortization, Year Four
Rent expense
Operating Leases, Rent Expense
Long-lived Assets by Geographic Areas
Schedule of Disclosure on Geographic Areas, Long-Lived Assets in Individual Foreign Countries by Country [Table Text Block]
Use of Estimates
Use of Estimates, Policy [Policy Text Block]
Income tax benefits from R&D tax credits
Effective Income Tax Rate Reconciliation, Tax Credit, Research, Percent
Data costs
Data Costs [Member]
Represents information related to data costs.
Reduction in tax expense, higher windfall tax benefits from stock-based compensation
Effective Income Tax Rate Reconciliation, Tax Expense (Benefit), Share-based Payment Arrangement, Amount
Mutual Funds
Investments, Fair Value Disclosure
Approved expansion of existing share repurchase program
Stock Repurchase Program Increase In Authorized Amount
Amount of increase in stock repurchase plan authorized.
Remaining authorized for future share repurchases
Stock Repurchase Program, Remaining Authorized Repurchase Amount
Comprehensive income
Comprehensive Income (Loss), Net of Tax, Attributable to Parent
Hypothetical change (up or down) (basis points)
Hypothetical Basis Point Change Libor Rate
The hypothetical basis point change in the London Interbank Offered Rate (LIBOR).
Dividend yield
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate
Preferred stock, par value (in dollars per share)
Preferred Stock, Par or Stated Value Per Share
Vesting of restricted stock (in shares)
Vesting Of Restricted Stock, Shares
The number of shares issued related to the vesting of restricted stock.
Documents Incorporated by Reference
Documents Incorporated by Reference [Text Block]
Percentage of Income Before Income Taxes
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
Mutual Funds
Mutual Funds [Member]
Represents information about an investment program funded by shareholders that trades in diversified holdings and is professionally managed.
Write-offs, Net of Recoveries
SEC Schedule, 12-09, Valuation Allowances and Reserves, Deduction
Asia Pacific
Asia Pacific [Member]
Purchases of property, equipment, leasehold improvements and intangible assets
Capital expenditures
Payments to Acquire Property, Plant, and Equipment
City Area Code
City Area Code
Document Period End Date
Document Period End Date
Debt
Long-term Debt [Text Block]
Property, Plant and Equipment [Abstract]
Annual subscriptions
Subscription Revenue [Member]
Represents information pertaining to subscription revenue.
Number of shares reserved for future issuance
Common Stock, Capital Shares Reserved for Future Issuance
Dividends Declared
Dividends Declared [Table Text Block]
Disaggregation of Revenue
Disaggregation of Revenue [Table Text Block]
Income before income taxes
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest
Hedging Designation [Axis]
Hedging Designation [Axis]
Disaggregation of Revenue [Table]
Disaggregation of Revenue [Table]
Quarterly Financial Information Disclosure [Abstract]
Stock-based compensation capitalized
Share-based Payment Arrangement, Amount Capitalized
Stock-based compensation expense
Share-based Payment Arrangement, Noncash Expense
Value of shares repurchased from employees at cost to cover taxes upon vesting
Value of shares repurchased in settlement of employee tax withholding obligations
Payment, Tax Withholding, Share-based Payment Arrangement
Depreciation on property, equipment and leasehold improvements
Deferred Tax Assets, Property, Plant and Equipment
Other financing activities, net
Proceeds from (Payments for) Other Financing Activities
Designated as Hedging Instrument
Designated as Hedging Instrument [Member]
Cover [Abstract]
Unaudited Quarterly Financial Data
Quarterly Financial Information [Text Block]
Company match (up to) (as a percent)
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay
Intangible Assets
Intangible Assets Disclosure [Text Block]
Provision for Income Taxes
Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block]
Estimated useful life
Property, Plant and Equipment, Useful Life
Goodwill [Line Items]
Goodwill [Line Items]
Debt obligations
Debt obligations
Long-term Debt
Lessee, Lease, Description [Line Items]
Lessee, Lease, Description [Line Items]
Deferred fees
Increase (Decrease) in Contract with Customer, Liability
Leases
Lessee, Operating Leases [Text Block]
U.S. operations
Federal Income Tax Expense (Benefit), Continuing Operations
Fair Value Disclosures [Abstract]
Concentration Risk Benchmark [Axis]
Concentration Risk Benchmark [Axis]
Client relationships
Customer Relationships [Member]
Cost of services
Cost of Goods and Services Sold
Total operating expenses
Costs and Expenses
Segment Reporting, Asset Reconciling Item [Line Items]
Segment Reporting, Asset Reconciling Item [Line Items]
Equity Components [Axis]
Equity Components [Axis]
Net unrealized gain (loss) on cash flow hedges
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax
Restricted stock
Restricted Stock [Member]
Share-based Payment Arrangement [Abstract]
Debt Instrument, Name [Domain]
Debt Instrument, Name [Domain]
All Other Countries
Other Countries [Member]
Other Countries
Graduated vesting schedule (term)
Defined Contribution Plan, Employer Matching Contribution, Term Of Graduated Vesting Schedule
Defined Contribution Plan, Employer Matching Contribution, Term Of Graduated Vesting Schedule
Total deferred tax assets
Deferred Tax Assets, Gross
Minimum
Minimum [Member]
2017 Credit Agreement
The 2017 Revolving Credit Facility [Member]
Represents information about the 2017 Revolving Credit Facility.
Balance Sheet Location [Domain]
Balance Sheet Location [Domain]
Current lease liabilities
Operating Lease, Liability, Current
Canceled/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
Summary of Weighted Average Assumptions
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]
Entity Interactive Data Current
Entity Interactive Data Current
Fair market value of cash and cash equivalents and investments
Investments and Cash
United States
United States
UNITED STATES
Exercised (in dollars per share)
Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price
Stock-based compensation
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Employee Compensation
Maximum amount of additional borrowings
Line Of Credit Facility Maximum Amount Of Additional Borrowings
The maximum aggregate amount of additional borrowings which is allowed under the credit facility provided that such request for additional borrowings meet the minimum borrowing requirement.
CASH FLOWS FROM OPERATING ACTIVITIES
Net Cash Provided by (Used in) Operating Activities [Abstract]
Stockholders' Equity
Stockholders' Equity Note Disclosure [Text Block]
Commitment fee (as a percent)
Line of Credit Facility, Commitment Fee Percentage
Interest rate swap agreement
Interest Rate Swap [Member]
Stock-Based Compensation
Share-based Payment Arrangement [Policy Text Block]
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Customer [Domain]
Customer [Domain]
Non-U.S.
Current Foreign Tax Expense (Benefit)
Cumulative Effect, Period of Adoption, Adjustment
Cumulative Effect, Period of Adoption, Adjustment [Member]
Intangible Assets
Goodwill and Intangible Assets, Intangible Assets, Policy [Policy Text Block]
Major Supplier [Axis]
Major Supplier [Axis]
Major Supplier
Entity Registrant Name
Entity Registrant Name
Accumulated foreign currency translation adjustments
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax
Derivative [Table]
Derivative [Table]
Statement of Stockholders' Equity [Abstract]
Concentration Risk [Line Items]
Concentration Risk [Line Items]
Weighted average discount rate (incremental borrowing rate)
Operating Lease, Weighted Average Discount Rate, Percent
Total deferred tax liabilities
Deferred Tax Liabilities, Gross
Expected to vest, aggregate intrinsic value
Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Expected To Vest, Intrinsic Value
Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Expected To Vest, Intrinsic Value
Entity Listings, Exchange [Axis]
Entity Listings, Exchange [Axis]
Number Outstanding
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward]
Debt issuance costs
Debt Issuance Costs, Net
Number of segments
Number of Reportable Segments
Total provision for income taxes
Components of Income Tax Expense (Benefit), Continuing Operations [Abstract]
Charged to Expense/Against Revenue
SEC Schedule, 12-09, Valuation Allowances and Reserves, Additions, Charge to Cost and Expense
Foreign currency translation adjustments
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, before Tax
Entity Incorporation, State or Country Code
Entity Incorporation, State or Country Code
Goodwill impairment charge
Impairment charge
Goodwill, Impairment Loss
Accounts receivable, net of reserves of $7,987 at August 31, 2020 and $10,511 at August 31, 2019
Accounts Receivable, after Allowance for Credit Loss, Current
Total
Lessee, Operating Lease, Liability, to be Paid
Other
Deferred Tax Assets, Other
Cost of Services
Cost of Goods and Service [Policy Text Block]
Non-employee Directors grant
Non-Employee Director Grant [Member]
Information pertaining to non-employee director grant awards.
Accrued interest
Unrecognized Tax Benefits, Interest on Income Taxes Accrued
Loss on sale of assets
Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property
Remaining lease term
Lessee, Operating Lease, Remaining Lease Term
Foreign Currency Translation
Foreign Currency Transactions and Translations Policy [Policy Text Block]
Common stock issued for employee stock plans (in shares)
Shares Issued, Shares, Share-based Payment Arrangement, before Forfeiture
Entity Address, Postal Zip Code
Entity Address, Postal Zip Code
Purchase price (as a percent)
Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price of Common Stock, Percent
Change in annual interest expense
Change In Annual Interest Expense
Represents the amount of change in annual interest expense related to specific interest changes.
Goodwill
Balance
Balance
Goodwill
Other comprehensive income (loss)
Other comprehensive loss
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent
Document Transition Report
Document Transition Report
Lease right-of-use assets
Deferred Tax Liabilities, Operating Lease Right-Of-Use Assets
Deferred Tax Liabilities, Operating Lease Right-Of-Use Assets
Deferred
Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract]
Derivative Assets
Derivative Asset, Fair Value, Gross Asset
Taxes payable, net of prepaid taxes
Increase (Decrease) in Income Taxes Payable
Level 2
Fair Value, Inputs, Level 2 [Member]
Ten largest clients
Ten Largest Clients [Member]
Ten Largest Clients
Approved increase in regular quarterly dividend (as a percent)
Increase In Dividend Rate
This item represents the percentage increase in dividends per share paid.
Changes in the Carrying Amount of Goodwill by Segment
Schedule of Goodwill [Table Text Block]
Forfeited (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period
Current
Current Income Tax Expense (Benefit), Continuing Operations [Abstract]
Asset Class [Domain]
Asset Class [Domain]
Equity [Abstract]
Total assets measured at fair value
Assets, Fair Value Disclosure
EMEA
EMEA [Member]
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table]
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table]
Deferred fees
Contract with Customer, Liability, Current
Accounting Standards Update [Extensible List]
Accounting Standards Update [Extensible List]
Stock options granted, weighted average exercise price (in dollars per share)
Granted (in dollars per share)
Weighted average exercise price (in dollars per share)
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price
Cumulative Effect, Period of Adoption [Axis]
Cumulative Effect, Period of Adoption [Axis]
Entities [Table]
Entities [Table]
Customer Concentration Risk
Customer Concentration Risk [Member]
Credit Facility [Domain]
Credit Facility [Domain]
Estimated Amortization Expense
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]
Derivative Contract [Domain]
Derivative Contract [Domain]
Diluted weighted average common shares (in shares)
Income available to common stockholders plus assumed conversions, Weighted Average Common Shares (Denominator) (in shares)
Weighted Average Number of Shares Outstanding, Diluted
Basic earnings per common share (in dollars per share)
Income available to common stockholders, Per Share Amount (in dollars per share)
Earnings Per Share, Basic
Non-U.S. operations
Foreign Income Tax Expense (Benefit), Continuing Operations
Other expenses
Other Income and Expenses [Abstract]
Expected life
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term
Entity File Number
Entity File Number
Canceled/forfeited (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period
Debt Disclosure [Abstract]
Weighted average remaining lease term (in years)
Operating Lease, Weighted Average Remaining Lease Term
Net cash used in financing activities
Net Cash Provided by (Used in) Financing Activities
Repayment of debt
Repayments of Long-term Debt
Vested and exercisable (in shares)
Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Vested And Exercisable, Outstanding, Number
Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Vested And Exercisable, Outstanding, Number
Dividends declared
Dividends, Common Stock
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues from External Customers and Long-Lived Assets [Line Items]
Stock-based compensation expense
Stock-based compensation
Share-based Payment Arrangement, Expense
Depreciation and amortization
Other Depreciation and Amortization
Balance Sheet Location [Axis]
Balance Sheet Location [Axis]
Gross unrecognized tax benefits
Balance
Balance
Unrecognized Tax Benefits
Common stock, $0.01 par value, 150,000,000 shares authorized, 40,767,708 and 40,104,192 shares issued, 38,030,252 and 38,117,840 shares outstanding at August 31, 2020 and 2019, respectively
Common Stock, Value, Issued
Goodwill and Intangible Assets Disclosure [Abstract]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets [Line Items]
Document Fiscal Year Focus
Document Fiscal Year Focus
Document Annual Report
Document Annual Report
2022
Finite-Lived Intangible Asset, Expected Amortization, Year Two
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]
Decrease to provision for income taxes (as a percent)
Percentage Change In Total Provision For Income Taxes
Represents the percentage change in the total provision for income taxes.
Reductions from settlements with Taxing Authorities
Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities
Entity Current Reporting Status
Entity Current Reporting Status
PNC Bank, National Associations
PNC Bank, National Associations [Member]
Represents information about PNC Bank, National Associations as company's lender.
Retirement Benefits [Abstract]
Earnings per Share
Earnings Per Share, Policy [Policy Text Block]
Common stock issued for employee stock plans (in shares)
Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture
Schedule of Long-term Debt Instruments [Table]
Schedule of Long-term Debt Instruments [Table]
Reconciliation of Unrecognized Tax Benefits
Summary of Income Tax Contingencies [Table Text Block]
Line of Credit Facility, Lender [Domain]
Line of Credit Facility, Lender [Domain]
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
CASH FLOWS FROM INVESTING ACTIVITIES:
Net Cash Provided by (Used in) Investing Activities [Abstract]
Common stock, issued (in shares)
Common Stock, Shares, Issued
Cash and cash equivalents
Cash and Cash Equivalents, at Carrying Value
Major Tax Jurisdictions in Which the Company and Affiliates Operate and the Earliest Tax Year Subject to Examination
Summary of Income Tax Examinations [Table Text Block]
Current and non-current lease liabilities
Present Value
Operating Lease, Liability
Segment Reporting [Abstract]
Interest expense, net
Interest Expense [Member]
Share Repurchase Program [Axis]
Share Repurchase Program [Axis]
Basis of Presentation
Basis of Presentation and Significant Accounting Policies [Text Block]
Accounts receivable, net of reserves
Increase (Decrease) in Accounts Receivable
Debt Instrument [Line Items]
Debt Instrument [Line Items]
TOTAL STOCKHOLDERS’ EQUITY
Balance
Balance
Stockholders' Equity Attributable to Parent
Statement of Comprehensive Income [Abstract]
Description of Business
Nature of Operations [Text Block]
Concentration Risk Type [Domain]
Concentration Risk Type [Domain]
Vested and exercisable (in dollars per share)
Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Vested And Exercisable, Weighted Average Exercise Price
Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Vested And Exercisable, Weighted Average Exercise Price
Lease liabilities
Deferred Tax Assets, Operating Lease Liabilities
Deferred Tax Assets, Operating Lease Liabilities
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY
Liabilities and Equity
Accumulated other comprehensive loss
Total accumulated other comprehensive loss
Accumulated Other Comprehensive Income (Loss), Net of Tax
Income Taxes
Income Tax Disclosure [Text Block]
Unrealized gain (loss) on cash flow hedges, tax (expense) benefit
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, Tax
Entity Address, City or Town
Entity Address, City or Town
Portion at Fair Value Measurement [Member]
Portion at Fair Value Measurement [Member]
Accrued compensation
Employee-related Liabilities, Current
Reconciliation of Assets from Segment to Consolidated [Table]
Reconciliation of Assets from Segment to Consolidated [Table]
Fair Value Hierarchy and NAV [Axis]
Fair Value Hierarchy and NAV [Axis]
Restricted stock units
Restricted Stock Units (RSUs) [Member]
Statute of limitations lapse
Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations
Accounts payable and accrued expenses
Accounts Payable and Accrued Liabilities, Current
One vendor
One Vendor [Member]
One Vendor
Percentage of purchases which may not exceed gross compensation
Share-based Compensation Arrangement by Share-based Payment Award, Maximum Employee Subscription Rate
2025
Lessee, Operating Lease, Liability, to be Paid, Year Five
Hedging Relationship [Axis]
Hedging Relationship [Axis]
Deferred tax liabilities:
Deferred Tax Liabilities, Gross [Abstract]
Financial Instrument [Axis]
Financial Instrument [Axis]
Antidilutive securities excluded from calculation of diluted EPS (in shares)
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount
Total current taxes
Current Income Tax Expense (Benefit)
Additions for tax positions of prior years
Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions
Additions based on tax positions related to the current year
Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions
Amortization period of intangible assets
Amortization period
Finite-Lived Intangible Asset, Useful Life
Equity Component [Domain]
Equity Component [Domain]
Derivatives in Cash Flow Hedging Relationships
Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss) [Table Text Block]
Grantee Status [Domain]
Grantee Status [Domain]
Weighted average interest rate
Line of Credit Facility, Interest Rate at Period End
Dividend payments
Payments of Dividends
Deferred rent
Deferred Rent
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from deferred rent.
LIABILITIES
Liabilities [Abstract]
Property, equipment and leasehold improvements, net
Property, equipment and leasehold improvements, net
Property, Plant and Equipment, Net
2023
Finite-Lived Intangible Asset, Expected Amortization, Year Three
Entity Tax Identification Number
Entity Tax Identification Number
Other (expense) income, net
Interest Income (Expense), Nonoperating, Net
Lessee, Lease, Description [Table]
Lessee, Lease, Description [Table]
Stock-based Compensation
Share-based Payment Arrangement [Text Block]
Net income
Net income
Net Income (Loss) Attributable to Parent
Changes in assets and liabilities, net of effects of acquisitions
Increase (Decrease) in Operating Capital [Abstract]
LIBOR
London Interbank Offered Rate (LIBOR) [Member]
Trade names
Trade Names [Member]
Leases [Abstract]
Total current assets
Assets, Current
Current Fiscal Year End Date
Current Fiscal Year End Date
Other European Countries
All Other EMEA Countries [Member]
All Other EMEA Countries
Operating expenses
Operating Expenses [Abstract]
Goodwill
Goodwill Disclosure [Text Block]
Earnings Per Share [Abstract]
Significant Components of Deferred Tax Assets and Liabilities
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
State and local taxes, net of U.S. federal income tax benefit
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent
Largest client
Largest Client [Member]
Largest Client
Contribution limit
Share Based Compensation Arrangement By Share Based Payment Award Maximum Contribution Limit
The maximum amount of contributions per share-based compensation plan during the offering period.
Interest expense, net
Gain (Loss) on Disposition of Business
NASDAQ Global Select Market
NASDAQ - ALL MARKETS [Member]
STOCKHOLDERS’ EQUITY
Stockholders' Equity Attributable to Parent [Abstract]
2025
Finite-Lived Intangible Asset, Expected Amortization, Year Five
Document Fiscal Period Focus
Document Fiscal Period Focus
Director Plan
Director Plan [Member]
Information pertaining to the Director Plan.
Internally developed software
Software Development [Member]
Share-based Awards Available for Grant
Share-based Compensation Arrangement by Share-based Payment Award, Additional General Disclosures [Abstract]
Overall lease term
Lessee, Operating Lease, Lease Not yet Commenced, Term of Contract
Certificates of deposit
Certificates of Deposit [Member]
Tax benefits from share-based payment arrangements
Excess Tax Benefit from Share-based Compensation, Financing Activities
Deferred fees
Contract with Customer, Liability, Noncurrent
Income available to common stockholders plus assumed conversions, Net Income (Numerator)
Net Income (Loss) Available to Common Stockholders, Diluted
Supplier Concentration Risk
Supplier Concentration Risk [Member]
Granted
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures
Unrealized tax loss on investment
Deferred Tax Assets, Investments
Supplemental Disclosure of Cash Flow Information
Supplemental Cash Flow Information [Abstract]
The Loan
The Loan [Member]
Represents the Eurodollar rate loan (the "Loan") under the Revolving Credit Facility.
Number of shares purchased by employees
Stock Issued During Period, Shares, Employee Stock Purchase Plans
Shares of Common Stock Outstanding
Schedule of Stockholders Equity [Table Text Block]
Entity Filer Category
Entity Filer Category
Common Stock
Common Stock [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Type [Domain]
Long-Lived Tangible Asset [Domain]
Foreign income at other than U.S. rates
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Percent
Concentration Risk Benchmark [Domain]
Concentration Risk Benchmark [Domain]
Total amount
Dividends, Cash
Property, Equipment and Leasehold Improvements
Property, Plant and Equipment [Table Text Block]
Remaining borrowing capacity
Line of Credit Facility, Remaining Borrowing Capacity
Class of Treasury Stock [Table]
Class of Treasury Stock [Table]
Leasehold improvements
Leasehold Improvements [Member]
Non performance-based
Non Performance Based [Member]
Non performance based member.
Gross Carrying Amount
Finite-Lived Intangible Assets, Gross
Fixed rate
Debt Instrument, Interest Rate, Stated Percentage
Vesting of restricted stock
Vesting Of Restricted Stock
The adjustment to equity related to the vesting of restricted stock.
Dividends payable
Dividends Payable, Current
Corporate money market funds
Money Market Funds [Member]
Less accumulated depreciation and amortization
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment
Supplemental Disclosure of Non-Cash Transactions
Noncash Investing and Financing Items [Abstract]
Diluted EPS
Earnings Per Share, Diluted [Abstract]
Exercised (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period
Expected to vest, weighted average remaining contractual life
Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Expected To Vest, Weighted Average Remaining Contractual Term
Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Expected To Vest, Weighted Average Remaining Contractual Term
Net increase in cash and cash equivalents
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect
Summary of Stock Award Activity
Schedule of Nonvested Share Activity [Table Text Block]
Hedging Relationship [Domain]
Hedging Relationship [Domain]
Dilutive effect of stock options and restricted stock (in shares)
Incremental Common Shares Attributable to Dilutive Effect of Contingently Issuable Shares
Future Minimum Lease Commitments
Lessee, Operating Lease, Liability, Maturity [Table Text Block]
Stock options
Share-based Payment Arrangement, Option [Member]
Basis of Accounting
Basis of Accounting, Policy [Policy Text Block]
Equity, Class of Treasury Stock [Line Items]
Equity, Class of Treasury Stock [Line Items]
Weighted Average Remaining Contractual Life (years)
Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Weighted Average Remaining Contractual Term [Abstract]
Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Weighted Average Remaining Contractual Term
Employee
Share-based Payment Arrangement, Employee [Member]
Basic weighted average common shares (in shares)
Income available to common stockholders, Weighted Average Common Shares (Denominator) (in shares)
Weighted Average Number of Shares Outstanding, Basic
Basis spread on variable rate
Debt Instrument, Basis Spread on Variable Rate
Term structure of risk-free interest rate
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate
Subsequent Events [Abstract]
Forfeited (in dollars per share)
Share-based Compensation Arrangements by Share-based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price
Grantee Status [Axis]
Grantee Status [Axis]
Accrued Liabilities
Accrued Liabilities [Policy Text Block]
Disclosure of accounting policy for accrued liabilities.
Treasury stock (in shares)
Treasury Stock, Shares
Cash Flow Hedging
Cash Flow Hedging [Member]
Impairment charge
Other than Temporary Impairment Losses, Investments
U.S. state and local
Deferred State and Local Income Tax Expense (Benefit)
Plan Name [Domain]
Plan Name [Domain]
U.S. operations
Income (Loss) from Continuing Operations before Income Taxes, Domestic
Entity Well-known Seasoned Issuer
Entity Well-known Seasoned Issuer
LTIP
LTIP [Member]
Information pertaining to the Long Term Incentive Plan ("LTIP").
Revenue Recognition
Revenue from Contract with Customer [Text Block]
Dividends declared, not paid
Dividends Payable
Cash paid during the year for interest
Interest Paid, Excluding Capitalized Interest, Operating Activities
Lease ROU assets obtained in exchange for lease liabilities
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability
Additional paid-in capital
Additional Paid in Capital
2021
Finite-Lived Intangible Asset, Expected Amortization, Year One
Fair value of long-term debt
Fair value of long-term debt
Long-term Debt, Fair Value
Cash and Cash Equivalents
Cash and Cash Equivalents, Policy [Policy Text Block]
Provision for income taxes
Provision for income taxes
Total provision for income taxes
Income Tax Expense (Benefit)
Cash paid during the year for income taxes, net of refunds
Income Taxes Paid, Net
Impairment of intangible assets
Impairment of Intangible Assets (Excluding Goodwill)
Cash and cash equivalents at beginning of period
Cash and cash equivalents at end of period
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents
Company contributions
Defined Contribution Plan, Employer Discretionary Contribution Amount
Property, Equipment and Leasehold Improvements
Property, Plant and Equipment, Policy [Policy Text Block]
Variable employee compensation recorded within accrued compensation
Accrued Bonuses
Total liabilities measured at fair value
Financial and Nonfinancial Liabilities, Fair Value Disclosure
Diluted earnings per common share (in dollars per share)
Income available to common stockholders plus assumed conversions, Per Share Amount (in dollars per share)
Diluted EPS (in dollars per share)
Earnings Per Share, Diluted
Local Phone Number
Local Phone Number
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Americas
Americas [Member]
Cumulative Effect, Period of Adoption [Domain]
Cumulative Effect, Period of Adoption [Domain]
Schedule of Stock by Class [Table]
Schedule of Stock by Class [Table]
Pre-tax intrinsic value of stock options exercised
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value
Debt Obligations
Schedule of Debt [Table Text Block]
Derivative [Line Items]
Derivative [Line Items]
Debt outstanding at time of retirement
Long-term debt, gross
Long-term Debt, Gross
Depreciation expense
Depreciation
Entity Address, Address Line One
Entity Address, Address Line One
Release for tax positions of prior years
Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions
Non-compete agreements
Noncompete Agreements [Member]
Common stock issued for employee stock plans
Shares Issued, Value, Share-based Payment Arrangement, before Forfeiture
Expected to vest (in shares)
Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Expected to Vest, Outstanding, Number
Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Expected to Vest, Outstanding, Number
Entity Emerging Growth Company
Entity Emerging Growth Company
Schedule II - Valuation and Qualifying Accounts
SEC Schedule, 12-09, Schedule of Valuation and Qualifying Accounts Disclosure [Text Block]
Schedule of Finite-Lived Intangible Assets [Table]
Schedule of Finite-Lived Intangible Assets [Table]
Total deferred taxes
Deferred Income Tax Expense (Benefit)
Derivative Liabilities
Derivative Liability, Fair Value, Gross Liability
Selling, General and Administrative
Selling, General and Administrative Expenses, Policy [Policy Text Block]
Maximum borrowing capacity
Line of Credit Facility, Maximum Borrowing Capacity
Award Type [Axis]
Award Type [Axis]
Weighted Average Exercise Price Per Share
Weighted Average Grant Date Fair Value Per Award
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Prepaid expenses and other current assets
Prepaid Expenses and Other Current Assets [Member]
Accumulated Amortization
Finite-Lived Intangible Assets, Accumulated Amortization
Maximum
Maximum [Member]
Preferred stock, authorized (in shares)
Preferred Stock, Shares Authorized
Fair Value Measures
Fair Value Measurement and Measurement Inputs, Recurring and Nonrecurring [Text Block]
Retained Earnings
Retained Earnings [Member]
Preferred stock, outstanding (in shares)
Preferred Stock, Shares Outstanding
Measurement Basis [Axis]
Measurement Basis [Axis]
Interest income earned from investments
Interest Income and Fees, Bankers Acceptances, Certificates of Deposit and Commercial Paper
Effective tax rate
Effective tax rate
Effective Income Tax Rate Reconciliation, Percent
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]
Summary of Significant Accounting Policies
Significant Accounting Policies [Text Block]
Net cash used in investing activities
Net Cash Provided by (Used in) Investing Activities
Purchases of investments
Payments to Acquire Investments
Risks and Concentrations of Credit Risk
Concentration Risk Disclosure [Text Block]
Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table]
Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table]
Receivable reserve
Receivable reserve
Accounts Receivable, Allowance for Credit Loss
Award Type [Domain]
Award Type [Domain]
Trading Symbol
Trading Symbol
Property, Equipment and Leasehold Improvements
Property, Plant and Equipment Disclosure [Text Block]
Schedule of Revenues from External Customers and Long-Lived Assets [Table]
Schedule of Revenues from External Customers and Long-Lived Assets [Table]
Treasury stock, at cost: 2,737,456 and 1,986,352 shares at August 31, 2020 and 2019, respectively
Treasury Stock, Value
Earnings Per Share
Earnings Per Share [Text Block]
Granted – performance-based options
Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Vested And Exercisable, Intrinsic Value
Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Vested And Exercisable, Intrinsic Value
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Tax at U.S. Federal statutory tax rate
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent
Non-U.S. operations
Income (Loss) from Continuing Operations before Income Taxes, Foreign
Entity Shell Company
Entity Shell Company
Shares repurchased from employees at cost to cover taxes upon vesting (in shares)
Number of shares repurchased in settlement of employee tax withholding obligations
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation
Recurring
Fair Value, Recurring [Member]
Other
Deferred Tax Liabilities Other Current
Amount of current deferred tax liability attributable to taxable temporary differences not separately disclosed.
Income tax (benefit) expense, finalization of prior year tax returns
Effective Income Tax Rate Reconciliation, Other Reconciling Items, Amount
New Accounting Standards or Updates Recently Adopted and Not Yet Effective
New Accounting Pronouncements, Policy [Policy Text Block]
Entity Public Float
Entity Public Float
Statement of Financial Position [Abstract]
Basic EPS
Earnings Per Share, Basic [Abstract]
Investments
Short-term Investments