DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES [Abstract] DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES [Abstract] Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] Offsetting Assets and Liabilities [Table Text Block] Offsetting Assets and Liabilities [Table Text Block] Offsetting Assets and Liabilities [Table Text Block] Schedule of Other Derivatives Not Designated as Hedging Instruments, Statements of Financial Performance and Financial Position, Location [Table Text Block] Derivative Instruments, Gain (Loss) [Table Text Block] Organization, Consolidation and Presentation of Financial Statements [Abstract] GENERAL Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Leases [Abstract] Lessee, Lease, Description [Table] Lessee, Lease, Description [Table] lessee, lease, description [Axis] lessee, lease, description [Axis] [Axis] Lessee, Lease, Description [Axis] lessee, lease, description [Axis] [Domain] lessee, lease, description [Axis] [Domain] [Domain] for Lessee, Lease, Description [Axis] Lessee, Lease, Description [Line Items] Lessee, Lease, Description [Line Items] Operating Lease, Weighted Average Remaining Lease Term Operating Lease, Weighted Average Remaining Lease Term Operating Leases, Future Minimum Payments, Due Thereafter Operating Leases, Future Minimum Payments, Due Thereafter Operating Leases, Future Minimum Payments Due, Next Twelve Months Operating Leases, Future Minimum Payments Due, Next Twelve Months Operating Lease, Weighted Average Discount Rate, Percent Operating Lease, Weighted Average Discount Rate, Percent Stockholders' Equity Attributable to Parent [Abstract] Stockholders' Equity Stockholders' Equity Note Disclosure [Text Block] Fair Value Disclosures [Abstract] FAIR VALUE MEASUREMENTS Fair Value Disclosures [Text Block] Stockholders' Equity [Table] Rights Agreement [Table] Rights Agreement [Table] Convertible Debt Issue [Axis] Convertible Debt Issue [Axis] Convertible Debt Issue [Axis] Convertible Debt Issue [Domain] Convertible Debt Issue [Domain] Convertible Debt Issue [Domain] 1.5% Issue [Member] 1.5% Issue [Member] 1.5% Issue [Member] Share Repurchase Program [Axis] Share Repurchase Program [Axis] Share Repurchase Program [Domain] Share Repurchase Program [Domain] Share Repurchase Plan [Member] Share Repurchase Plan [Member] Share Repurchase Plan [Member] 2019 Share Repurchase Plan [Member] 2019 Share Repurchase Plan [Member] 2019 Share Repurchase Plan [Member] Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Stockholders' Equity [Line Items] Rights Agreement [Line Items] [Line Items] for Rights Agreement [Table] Stock Repurchase Program, Number of Shares Authorized to be Repurchased Stock Repurchase Program, Number of Shares Authorized to be Repurchased Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Translation adjustment Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Debt Instrument, Convertible, Conversion Price Debt Instrument, Convertible, Conversion Price Share Price Share Price Stock Repurchase Program, Authorized Amount Stock Repurchase Program, Authorized Amount ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES [Abstract] ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES [Abstract] Capital Lease Obligations, Current Capital Lease Obligations, Current Accrued expenses Accrued Liabilities, Current Accrued amounts due to mobile operators and other content providers Accrued amounts due to mobile operators and other content providers Accrued amounts due to mobile operators and other content providers Money transfer settlement obligations Settlement Liabilities, Current Derivative liabilities Derivative Liability, Current Accrued expenses and other current liabilities Accrued Expenses And Other Current Liabilities Accrued expenses and other current liabilities. Loss Contingency, Information about Litigation Matters [Abstract] Loss Contingencies [Table] Loss Contingencies [Table] Loss Contingency Nature [Axis] Loss Contingency Nature [Axis] Loss Contingency, Nature [Domain] Loss Contingency, Nature [Domain] Litigation Status [Axis] Litigation Status [Axis] Litigation Status [Domain] Litigation Status [Domain] Litigation Case [Axis] Litigation Case [Axis] Litigation Case Type [Domain] Litigation Case [Domain] Loss Contingencies [Line Items] Loss Contingencies [Line Items] Litigation and Contingencies Legal Matters and Contingencies [Text Block] INCOME TAXES [Abstract] (10) INCOME TAXES [Abstract] Income taxes [Table] Income taxes [Table] Income taxes [Table] Legal Entity [Axis] Entity [Domain] Income taxes [Line Items] Income taxes [Line Items] Effective Income Tax Rate Effective Income Tax Rate Reconciliation, Percent Federal Statutory Income Tax Rate Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent SEC Schedule, 12-09, Valuation Allowances and Reserves, Deduction SEC Schedule, 12-09, Valuation Allowances and Reserves, Deduction Segment Information [Abstract] Segment Information. Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Geographical [Axis] Geographical [Axis] Geographical [Domain] Geographical [Domain] Europe [Member] Europe [Member] Asia Pacific [Member] Asia Pacific [Member] Other geographic locations [Member] Other geographic locations [Member] Other geographic locations [Member] North America [Member] North America [Member] Consolidation, Eliminations [Member] Consolidation, Eliminations [Member] Segment Reporting Information, by Segment [Axis] Segments [Axis] Reporting Segment [Domain] Segments [Domain] Eft Processing Segment [Member] EFT Processing Segment. Epay Segment [Member] Epay Segment. Money Transfer Segment [Member] Money Transfer Segment. Corporate Services, Eliminations and Other [Member] Unallocated Amount to Segment, Intersegment Eliminations and Other [Member] Unallocated Amount to Segment, Intersegment Eliminations and Other [Member] Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Revenues Revenues Number of Reportable Segments Number of Reportable Segments Direct operating costs Cost of Goods and Services Sold Salaries and benefits Labor and Related Expense Selling, general and administrative Selling, General and Administrative Expense Intangible assets impairment Goodwill and Intangible Asset Impairment Depreciation and amortization Depreciation, Depletion and Amortization, Nonproduction Operating income (expense) Operating Income (Loss) Property, Plant and Equipment, Net Property, Plant and Equipment, Net Assets Assets Costs and Expenses Costs and Expenses Commitments Disclosure [Abstract] Commitments Disclosure [Abstract] Other Commitments [Table] Other Commitments [Table] Guarantor Obligations, Nature [Axis] Guarantor Obligations, Nature [Axis] Guarantor Obligations, Nature [Domain] Guarantor Obligations, Nature [Domain] Guarantee Type, Other [Member] Guarantee Type, Other [Member] Performance Guarantee [Member] Performance Guarantee [Member] Indemnification Agreement [Member] Indemnification Agreement [Member] Financial Instrument [Axis] Financial Instrument [Axis] Financial Instruments [Domain] Financial Instruments [Domain] Cash and Cash Equivalents [Member] Cash and Cash Equivalents [Member] Revolving Credit Facility [Member] Revolving Credit Facility [Member] Other Commitments [Axis] Other Commitments [Axis] Other Commitments [Domain] Other Commitments [Domain] Other Commitments [Line Items] Other Commitments [Line Items] Letters of Credit Outstanding, Amount Letters of Credit Outstanding, Amount Pledged Assets, Not Separately Reported, Other Pledged Assets, Not Separately Reported, Other Guarantor Obligations, Maximum Exposure, Undiscounted Guarantor Obligations, Maximum Exposure, Undiscounted DEBT OBLIGATIONS [Abstract] DEBT OBLIGATIONS [Abstract] Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Reference rate [Axis] Reference rate [Axis] Reference rate [Axis] Reference Rate [Domain] Reference Rate [Domain] Reference Rate [Domain] Base Rate [Member] Base Rate [Member] London Interbank Offered Rate (LIBOR) [Member] London Interbank Offered Rate (LIBOR) [Member] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Minimum [Member] Minimum [Member] Maximum [Member] Maximum [Member] Credit Facility [Axis] Credit Facility [Axis] Credit Facility [Domain] Credit Facility [Domain] Unsecured Debt [Member] Unsecured Debt [Member] 0.75% Issue [Member] 0.75% Issue [Member] 0.75% Issue [Member] Debt Instrument [Line Items] Debt Instrument [Line Items] Line of Credit Facility, Maximum Borrowing Capacity Line of Credit Facility, Maximum Borrowing Capacity Repayments of Other Long-term Debt Repayments of Other Long-term Debt Debt Instrument, Interest Rate, Stated Percentage Debt Instrument, Interest Rate, Stated Percentage Debt Instrument, Redemption Price, Percentage Debt Instrument, Redemption Price, Percentage Debt Instrument, Convertible, Carrying Amount of Equity Component Debt Instrument, Convertible, Carrying Amount of Equity Component Adjustments to Additional Paid in Capital, Other Adjustments to Additional Paid in Capital, Other Unamortized Debt Issuance Expense Unamortized Debt Issuance Expense Total Debt [Roll Forward] Total Debt [Roll Forward] Revolving Credit Facility Long-term Line of Credit Other Debt Short-term Debt Convertible Debt Convertible Debt Interest Expense, Debt Interest Expense, Debt Amortization of Debt Discount (Premium) Amortization of Debt Discount (Premium) Debt Instrument, Interest Rate During Period Debt Instrument, Interest Rate During Period Debt Instrument, Unamortized Discount Debt Instrument, Unamortized Discount Line of Credit Facility, Expiration Date Line of Credit Facility, Expiration Date Debt Instrument, Basis Spread on Variable Rate Debt Instrument, Basis Spread on Variable Rate Repayments of Convertible Debt Repayments of Convertible Debt Subsequent Event [Abstract] Subsequent Event [Abstract] Subsequent Event [Table] Subsequent Event [Table] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Subsequent Event [Member] Subsequent Event [Member] Subsequent Event [Line Items] Subsequent Event [Line Items] Subsequent Events [Text Block] Subsequent Events [Text Block] INCOME TAXES Income Tax Disclosure [Text Block] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Income Statement Location [Axis] Income Statement Location [Axis] Income Statement Location [Domain] Income Statement Location [Domain] Foreign Currency Gain (Loss) [Member] Foreign Currency Gain (Loss) [Member] Business Operations [Axis] Business Operations [Axis] Division [Axis] Business Operations [Domain] Business Operations [Domain] [Domain] for Division [Axis] HiFX Operations [Member] HiFX Operations [Member] HiFX Operations [Member] [Member] Derivative Instrument [Axis] Derivative Instrument [Axis] Derivative Contract Type [Domain] Derivative Contract [Domain] Foreign Exchange Contracts [Member] Foreign Exchange Contract [Member] Derivatives, Fair Value [Line Items] Derivatives, Fair Value [Line Items] Foreign Currency Derivative Instruments, Asset at Fair Value Foreign Currency Derivative Instruments Not Designated as Hedging Instruments, Asset at Fair Value Foreign Currency Derivative Instruments, Liability at Fair Value Foreign Currency Derivative Instruments Not Designated as Hedging Instruments, Liability at Fair Value Statement of Financial Position [Abstract] Statement [Table] Statement, Scenario [Axis] Scenario [Axis] Scenario, Unspecified [Domain] Scenario, Unspecified [Domain] Statement [Line Items] Statement [Line Items] ASSETS Assets [Abstract] Current assets: Assets, Current [Abstract] Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Restricted cash Restricted Cash and Cash Equivalents, Current Trade accounts receivable, net of allowances for doubtful accounts of $24,937 at June 30, 2019 and $24,287 at December 31, 2018 Accounts Receivable, Net, Current Prepaid expenses and other current assets Prepaid Expense and Other Assets, Current Total current assets Assets, Current Operating right of use lease asset Operating Lease, Right-of-Use Asset Property and equipment, net of accumulated depreciation of $381,771 at June 30, 2019 and $373,180 at December 31, 2018 Goodwill Goodwill Acquired intangible assets, net of accumulated amortization of $201,566 at June 30, 2019 and $190,920 at December 31, 2018 Finite-Lived Intangible Assets, Net Other assets, net of accumulated amortization of $54,549 at June 30, 2019 and $50,821 at December 31, 2018 Other Assets, Noncurrent Total assets LIABILITIES AND EQUITY Liabilities and Equity [Abstract] Current liabilities: Liabilities, Current [Abstract] Trade accounts payable Accounts Payable, Trade, Current Accrued expenses and other current liabilities Current portion of operating lease liabilities Operating Lease, Liability, Current Short-term debt obligations and current maturities of long-term debt obligations Long-term Debt, Current Maturities Income taxes payable Accrued Income Taxes, Current Deferred revenue Deferred Revenue, Current Total current liabilities Liabilities, Current Debt obligations, net of current portion Long-term Debt, Excluding Current Maturities Operating lease obligations, net of current portion Operating Lease, Liability, Noncurrent Capital lease obligations, net of current portion Capital Lease Obligations, Noncurrent Deferred income taxes Deferred Tax Liabilities, Net, Noncurrent Other long-term liabilities Other Liabilities, Noncurrent Total liabilities Liabilities Equity: Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Euronet Worldwide, Inc. stockholders' equity: Preferred Stock, $0.02 par value. 10,000,000 shares authorized; none issued Preferred Stock, Value, Issued Common Stock, $0.02 par value. 90,000,000 shares authorized; 62,563,955 issued at June 30, 2019 and 59,897,309 issued at December 31, 2018 Common Stock, Value, Issued Additional paid-in-capital Additional Paid in Capital, Common Stock Treasury stock, at cost, 8,083,716 shares at June 30, 2019 and 8,077,311 shares at December 31, 2018 Treasury Stock, Value Retained earnings Retained Earnings (Accumulated Deficit) Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Total Euronet Worldwide, Inc. stockholders' equity Stockholders' Equity Attributable to Parent Noncontrolling interests Stockholders' Equity Attributable to Noncontrolling Interest Total equity Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Total liabilities and equity Liabilities and Equity Schedule of Future Minimum Payments [Abstract] Schedule of Future Minimum Payments [Abstract] Lease, Cost [Table Text Block] Lease, Cost [Table Text Block] Lessee, Operating Lease, Liability, Maturity [Table Text Block] Lessee, Operating Lease, Liability, Maturity [Table Text Block] Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block] Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block] Lessee, Operating Lease, Disclosure [Table Text Block] Lessee, Operating Lease, Disclosure [Table Text Block] Schedule of Cash Flow, Supplemental Disclosures [Table Text Block] Schedule of Cash Flow, Supplemental Disclosures [Table Text Block] Derivative Instruments, Gain (Loss) [Table] Derivative Instruments, Gain (Loss) [Table] Ria Operations [Member] Ria Operations [Member] Ria Operations [Member] Trading Revenue [Member] Trading Revenue [Member] Derivative Instruments, Loss [Line Items] Derivative Instruments, Gain (Loss) [Line Items] Gain (loss) on Foreign Currency Derivative Instruments Not Designated as Hedging Instruments Gain (Loss) on Foreign Currency Derivative Instruments Not Designated as Hedging Instruments Foreign Currency Exchange Margin Trading Activity, Gain 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, Measurements, Recurring [Member] Fair Value, Measurements, Recurring [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, Inputs, Level 1 [Member] Fair Value, Inputs, Level 1 [Member] Fair Value, Inputs, Level 2 [Member] Fair Value, Inputs, Level 2 [Member] Fair Value, Inputs, Level 3 [Member] Fair Value, Inputs, Level 3 [Member] 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] Convertible Debt, Fair Value Disclosures Convertible Debt, Fair Value Disclosures Foreign Currency Contract, Asset, Fair Value Disclosure Foreign Currency Contract, Asset, Fair Value Disclosure Foreign Currency Contracts, Liability, Fair Value Disclosure Foreign Currency Contracts, Liability, Fair Value Disclosure Debt Instrument, Fair Value Disclosure Debt Instrument, Fair Value Disclosure Debt Securities Debt Securities Summary of Significant Accounting Policies and Practices [Abstract] Summary Of Significant Accounting Policies And Practices. Recently Issued and Adopted Accounting Pronouncements New Accounting Pronouncements and Changes in Accounting Principles [Text Block] Income Statement [Abstract] Statement [Table] Operating expenses: Costs and Expenses [Abstract] Total operating expenses Operating income Other income (expense): Nonoperating Income (Expense) [Abstract] Interest income Investment Income, Interest Interest expense Interest Expense Gain (Loss) on Extinguishment of Debt Gain (Loss) on Extinguishment of Debt Loss from unconsolidated affiliates Income (Loss) from Equity Method Investments Foreign currency exchange (loss) gain, net Foreign Currency Transaction Gain (Loss), before Tax Other gains Other Nonoperating Income (Expense) Other (expense) income, net Nonoperating Income (Expense) Income before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Income tax expense Income Tax Expense (Benefit) Net income Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Net loss attributable to noncontrolling interests Net Income (Loss) Attributable to Noncontrolling Interest Net income attributable to Euronet Worldwide, Inc. Net Income (Loss) Attributable to Parent Earnings per share attributable to Euronet Worldwide, Inc. stockholders - basic Earnings Per Share, Basic Earnings per share attributable to Euronet Worldwide, Inc. stockholders - diluted Earnings Per Share, Diluted Weighted average number of shares outstanding - basic Weighted Average Number of Shares Outstanding, Basic Weighted average number of shares outstanding - diluted Weighted Average Number of Shares Outstanding, Diluted SEGMENT INFORMATION Segment Reporting Disclosure [Text Block] Credit Agreement Disclosure [Abstract] Credit Agreement Disclosure [Abstract] Term Loan A [Member] Term Loan A [Member] Term Loan A [Member] Senior Secured Credit Facility [Member] Senior Secured Credit Facility [Member] Senior Secured Credit Facility [Member] LIBOR [Member] LIBOR [Member] LIBOR [Member] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Variable Rate [Axis] Variable Rate [Axis] Variable Rate [Domain] Variable Rate [Domain] Debt Instrument, Redemption, Period [Axis] Debt Instrument, Redemption, Period [Axis] Debt Instrument, Redemption, Period [Domain] Debt Instrument, Redemption, Period [Domain] Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Adjustments to Additional Paid in Capital, Equity Component of Convertible Debt Adjustments to Additional Paid in Capital, Equity Component of Convertible Debt Repayments of Debt Repayments of Debt Revolving Credit Facility, Interest Rate at Period End Line of Credit Facility, Interest Rate at Period End Credit Facility Expiration Date Credit Facility Expiration Date Date when the Credit Facility is scheduled to expire, in CCYY-MM-DD format. Debt Instrument, Face Amount Debt Instrument, Face Amount Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate Proceeds from Issuance of Long-term Debt Proceeds from Issuance of Long-term Debt Line of Credit Facility, Capacity Available for Specific Purpose Other than for Trade Purchases Line of Credit Facility, Capacity Available for Specific Purpose Other than for Trade Purchases Debt, Long-term and Short-term, Combined Amount Debt, Long-term and Short-term, Combined Amount Debt, net of debt issuance costs Debt, net of debt issuance costs Total debt, net of debt issuance costs Debt Instrument, Description of Variable Rate Basis Debt Instrument, Description of Variable Rate Basis Line of Credit Facility, Increase (Decrease), Net Line of Credit Facility, Increase (Decrease), Net Short-term Debt, Weighted Average Interest Rate, over Time Short-term Debt, Weighted Average Interest Rate, over Time Adjustments to Additional Paid in Capital, Equity Component of Convertible Debt, Subsequent Adjustments Adjustments to Additional Paid in Capital, Equity Component of Convertible Debt, Subsequent Adjustments debt conversion, converted instrument, bonds converted debt conversion, converted instrument, bonds converted debt conversion, converted instrument, bonds converted Stock Issued During Period, Shares, Conversion of Convertible Securities Stock Issued During Period, Shares, Conversion of Convertible Securities Gain (Loss) on Extinguishment of Debt Gain (Loss) on Extinguishment of Debt, before Tax Gain (Loss) on Extinguishment of Debt, before Tax Debt Securities Long-term Debt Operating Lease, Payments, Use Operating Lease, Payments, Use Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Lease, Cost [Table Text Block] Operating Leases, Rent Expense, Net Right of use lease asset Lessee, operating lease, liability, payments due remainder of fiscal year Lessee, Operating Lease, Liability, Payments, Remainder of Fiscal Year Lessee, operating lease, liability, payments due year two Lessee, Operating Lease, Liability, Payments, Due Year Two Lessee, operating lease, liability, payments due year three Lessee, Operating Lease, Liability, Payments, Due Year Three Lessee, operating lease, liability, payments due year four Lessee, Operating Lease, Liability, Payments, Due Year Four Lessee, Operating Lease, Liability, Payments, Due Year Five Lessee, Operating Lease, Liability, Payments, Due Year Five Lessee, operating lease, liability, payments due after year five Lessee, Operating Lease, Liability, Payments, Due after Year Five Lessee, operating lease, liability, payments due Lessee, Operating Lease, Liability, Payments, Due Operating Lease, Liability Operating Lease, Liability Operating Leases, Future Minimum Payments, Due in Two Years Operating Leases, Future Minimum Payments, Due in Two Years Operating Leases, Future Minimum Payments, Due in Three Years Operating Leases, Future Minimum Payments, Due in Three Years Operating Leases, Future Minimum Payments, Due in Four Years Operating Leases, Future Minimum Payments, Due in Four Years Operating Leases, Future Minimum Payments, Due in Five Years Operating Leases, Future Minimum Payments, Due in Five Years Operating Leases, Future Minimum Payments Due Operating Leases, Future Minimum Payments Due Capital Leases, Future Minimum Payments, Interest Included in Payments Lessee, Operating Lease, Liability, Undiscounted Excess Amount Variable Lease, Cost Variable Lease, Cost Operating Lease, Expense Operating Lease, Expense Schedule of Debt [Table Text Block] Schedule of Debt [Table Text Block] Derivative Instruments and Hedging Activities Disclosures [Table] Derivative Instruments and Hedging Activities Disclosures [Table] Corporate Operations [Member] Corporate Operations [Member] Corporate Operations [Member] Derivative Instruments and Hedging Activities Disclosures [Line Items] Derivative Instruments and Hedging Activities Disclosures [Line Items] Foreign currency forward contract term Foreign currency forward contract term Foreign currency forward contract term, in days Derivative, Notional Amount Derivative, Notional Amount Goodwill and Intangible Assets Disclosure [Abstract] Schedule of Finite and Indefinite Lived Intangible Assets [Table] Schedule of Finite and Indefinite Lived Intangible Assets [Table] Schedule of Finite and Indefinite Lived Intangible Assets [Table] [Table] Legal Entity [Axis] Entity [Domain] Epay Segment [Member] Schedule of Finite and Indefinite Lived Intangible Assets [Line Items] Schedule of Finite and Indefinite Lived Intangible Assets [Line Items] [Line Items] for Schedule of Finite and Indefinite Lived Intangible Assets [Table] [Table] Goodwill and Finite-lived Intangible Assets Rollforward [Roll Forward] Goodwill and Finite-lived Intangible Assets Rollforward [Roll Forward] Finite-Lived Intangible Assets, Net Finite-Lived Intangible Assets, Amortization Expense Amortization of Intangible Assets Finite-lived intangible assets, other changes Finite-lived intangible assets, other changes Finite-lived intangible assets, other changes (primarily changes in foreign currency exchange rates) Goodwill, Other Increase (Decrease) Goodwill, Other Increase (Decrease) Intangible Assets, Net (Including Goodwill) Intangible Assets, Net (Including Goodwill) Total intangible assets amortization expense Total intangible assets amortization expense Total intangible assets amortization expense Total intangible assets, other changes Total intangible assets, other changes Total intangible assets, including goodwill, other changes (primarily changes in foreign currency exchange rates) Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months Finite-Lived Intangible Assets, Amortization Expense, Year Two Finite-Lived Intangible Assets, Amortization Expense, Year Two Finite-Lived Intangible Assets, Amortization Expense, Year Three Finite-Lived Intangible Assets, Amortization Expense, Year Three Finite-Lived Intangible Assets, Amortization Expense, Year Four Finite-Lived Intangible Assets, Amortization Expense, Year Four Finite-Lived Intangible Assets, Amortization Expense, Year Five Finite-Lived Intangible Assets, Amortization Expense, Year Five Finite-lived Intangible Assets Acquired Finite-lived Intangible Assets Acquired Goodwill, Acquired During Period Goodwill, Acquired During Period Total intangible assets acquired during period Total intangible assets acquired during period Total intangible assets acquired during period Goodwill, Impairment Loss Goodwill, Impairment Loss Unearned Revenue [Abstract] Unearned Revenue [Abstract] Deferred Revenue Disclosure [Text Block] Deferred Revenue Disclosure [Text Block] Line of Credit Facility, Interest Rate Description Line of Credit Facility, Interest Rate Description Statement of Comprehensive Income [Abstract] Net income Comprehensive (loss) income Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Comprehensive loss (income) attributable to noncontrolling interests Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Comprehensive (loss) income attributable to Euronet Worldwide, Inc. Comprehensive Income (Loss), Net of Tax, Attributable to Parent DEBT OBLIGATIONS Debt Disclosure [Text Block] Revenue from Contract with Customer [Abstract] Deferred Revenue, Additions Deferred Revenue, Additions Deferred Revenue, Revenue Recognized Deferred Revenue, Revenue Recognized DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES Derivative Instruments and Hedging Activities Disclosure [Text Block] Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Leases of Lessee Disclosure [Text Block] Leases of Lessee Disclosure [Text Block] Accounting Changes and Error Corrections [Abstract] New Accounting Pronouncements or Change in Accounting Principle [Table] New Accounting Pronouncements or Change in Accounting Principle [Table] Adjustments for New Accounting Pronouncements [Axis] Adjustments for New Accounting Pronouncements [Axis] Type of Adoption [Domain] Type of Adoption [Domain] Accounting Standards Update 2014-09 [Member] Accounting Standards Update 2014-09 [Member] Accounting Standards Update 2016-15 [Member] Accounting Standards Update 2016-15 [Member] Adjustments for Change in Accounting Principle [Axis] Adjustments for Change in Accounting Principle [Axis] Adjustments for Change in Accounting Principle [Domain] Adjustments for Change in Accounting Principle [Domain] New Accounting Pronouncements or Change in Accounting Principle [Line Items] New Accounting Pronouncements or Change in Accounting Principle [Line Items] Earnings Per Share [Abstract] Schedule of Weighted Average Number of Shares [Table Text Block] Schedule of Weighted Average Number of Shares [Table Text Block] Document and Entity Information [Abstract] Document and Entity Information. Entities [Table] Entities [Table] Entity Listings, Exchange [Axis] Entity Listings, Exchange [Axis] Exchange [Domain] Exchange [Domain] NASDAQ - ALL MARKETS [Member] NASDAQ - ALL MARKETS [Member] Class of Stock [Axis] Class of Stock [Axis] Class of Stock [Domain] Class of Stock [Domain] Common Stock [Member] Common Stock [Member] 1.375% Senior Notes due 2026 [Member] 1.375% Senior Notes due 2026 [Member] 1.375% Senior Notes due 2026 [Member] Entity Information [Line Items] Entity Information [Line Items] Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Entity Emerging Growth Company Entity Emerging Growth Company Entity Small Business Entity Small Business Document Transition Report Document Transition Report Entity Tax Identification Number Entity Tax Identification Number Title of 12(b) Security Title of 12(b) Security Trading Symbol Trading Symbol Security Exchange Name Security Exchange Name Document Quarterly Report Document Quarterly Report Entity Address, Address Line One Entity Address, Address Line One Entity Address, City or Town Entity Address, City or Town Entity Address, State or Province Entity Address, State or Province City Area Code City Area Code Phone Fax Number Description Local Phone Number Entity Current Reporting Status Entity Current Reporting Status Entity Interactive Data Current Entity Interactive Data Current Entity Shell Company Entity Shell Company Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Entity Filer Category Entity Filer Category Document Type Document Type Document Period End Date Document Period End Date Entity File Number Entity File Number Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Amendment Flag Amendment Flag Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Entity Address, Postal Zip Code Entity Address, Postal Zip Code Schedule of Intangible Assets and Goodwill [Table Text Block] Schedule of Intangible Assets and Goodwill [Table Text Block] Statement of Stockholders' Equity [Abstract] Report Date [Axis] Report Date [Axis] Financial Statement Filing Date [Domain] Financial Statement Filing Date [Domain] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Additional Paid-in Capital [Member] Additional Paid-in Capital [Member] Treasury Stock [Member] Treasury Stock [Member] Retained Earnings [Member] Retained Earnings [Member] AOCI Attributable to Parent [Member] AOCI Attributable to Parent [Member] Noncontrolling Interest [Member] Noncontrolling Interest [Member] Adjustments for Error Corrections [Axis] Adjustments for Error Corrections [Axis] Adjustments for Error Correction [Domain] Adjustments for Error Correction [Domain] Total Euronet Worldwide Inc. stockholders' equity Number of Shares Outstanding Period Start Common Stock, Shares, Outstanding Number of Shares Outstanding Period End Net income attributable to Euronet Worldwide, Inc. Net income attributable to noncontrolling interest Other comprehensive income (loss) Other Comprehensive Income (Loss), Net of Tax Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures Stock Issued During Period, Shares, Other Stock Issued During Period, Shares, Other Share-based compensation Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition Stock Issued During Period, Value, Conversion of Convertible Securities Stock Issued During Period, Value, Conversion of Convertible Securities Repurchases and conversions of convertible notes, net of tax Debt Conversion, Converted Instrument, Shares Issued Stock Issued During Period, Value, Conversion of Convertible Securities, Net of Adjustments Stock Issued During Period, Value, Conversion of Convertible Securities, Net of Adjustments Treasury Stock, Shares, Acquired Treasury Stock, Shares, Acquired Treasury Stock, Value, Acquired, Cost Method Treasury Stock, Value, Acquired, Cost Method Stockholders' Equity, Other Stockholders' Equity, Other Total Euronet Worldwide Inc. stockholders' equity GOODWILL AND ACQUIRED INTANGIBLE ASSETS, NET Goodwill and Intangible Assets Disclosure [Text Block] Balance Sheet Parentheticals [Abstract] Balance Sheet Parentheticals [Abstract] Allowance for doubtful accounts receivable Allowance for Doubtful Accounts Receivable, Current Accumulated depreciation of property and equipment Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Accumulated amortization of intangible assets Finite-Lived Intangible Assets, Accumulated Amortization Accumulated amortization of other assets Accumulated amortization of other assets Accumulated amortization of other assets. Preferred Stock, par value per share Preferred Stock, Par or Stated Value Per Share Preferred Stock, shares authorized Preferred Stock, Shares Authorized Preferred Stock, shares issued Preferred Stock, Shares Issued Common Stock, par value per share Common Stock, Par or Stated Value Per Share Common Stock, shares authorized Common Stock, Shares Authorized Common Stock, shares issued Common Stock, Shares, Issued Treasury Stock, shares Treasury Stock, Shares Schedule of Accrued Expenses and Other Current Liabilities [Table Text Block] Schedule of Accrued Expenses and Other Current Liabilities [Table Text Block] Schedule of Accrued Expenses and Other Current Liabilities [Table Text Block] Accrued Expenses and Other Current Liabilities Other Liabilities Disclosure [Text Block] Schedule of Segment Reporting Information, by Segment [Table Text Block] Schedule of Segment Reporting Information, by Segment [Table Text Block] Schedule of Revenues by Segment by Region [Table Text Block] Schedule of Revenues by Segment by Region [Table Text Block] [Table Text Block] for Schedule of Revenues by Segment by Region [Table] Derivative Assets, Fair Value, Gross Assets Derivative Asset, Fair Value, Gross Asset Gross Amount of Eligible Offsetting Recognized Derivative Liabilities Derivative Asset, Fair Value, Gross Liability Derivative Asset, Fair Value, Amount Not Offset Against Collateral Derivative Asset, Fair Value, Amount Not Offset Against Collateral Derivative Asset, Not Offset, Policy Election Deduction Derivative Asset, Not Offset, Policy Election Deduction Cash Collateral Received Derivative, Collateral, Obligation to Return Cash Derivative Asset, Fair Value, Amount Offset Against Collateral Derivative Asset, Fair Value, Amount Offset Against Collateral Derivative Liability, Fair Value, Gross Liability Derivative Liability, Fair Value, Gross Liability Gross Amount of Eligible Offsetting Recognized Derivative Assets Derivative Liability, Fair Value, Gross Asset Derivative Liability, Fair Value, Amount Not Offset Against Collateral Derivative Liability, Fair Value, Amount Not Offset Against Collateral Derivative Liability, Not Offset, Policy Election Deduction Derivative Liability, Not Offset, Policy Election Deduction Cash Collateral Paid Derivative, Collateral, Right to Reclaim Cash Derivative Liability, Fair Value, Amount Offset Against Collateral Derivative Liability, Fair Value, Amount Offset Against Collateral Commitments Commitments Disclosure [Text Block] Accounting Policies [Abstract] Recently Issued and Adopted Accounting Pronouncements Significant Accounting Policies [Text Block] Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements Incremental Common Shares Attributable to Dilutive Effect of Conversion of Debt Securities Incremental Common Shares Attributable to Dilutive Effect of Conversion of Debt Securities Weighted Average Number of Shares Outstanding, Diluted Statement of Cash Flows [Abstract] Net income 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] Depreciation and amortization Depreciation, Depletion and Amortization Share-based compensation Share-based Compensation Unrealized foreign exchange loss (gain), net Foreign Currency Transaction Gain (Loss), Unrealized Deferred income taxes Deferred Income Tax Expense (Benefit) Gain (Loss) on Extinguishment of Debt Loss from unconsolidated affiliates Accretion of convertible debt discount and amortization of debt issuance costs Amortization of Debt Issuance Costs and Discounts Non-cash impairment of acquired intangible assets Changes in working capital, net of amounts acquired: Increase (Decrease) in Operating Capital [Abstract] Income taxes payable, net Increase (Decrease) in Income Taxes Payable Trade accounts receivable Increase (Decrease) in Accounts Receivable Prepaid expenses and other current assets Increase (Decrease) in Prepaid Expense and Other Assets Trade accounts payable Increase (Decrease) in Accounts Payable, Trade Deferred revenue Increase (Decrease) in Deferred Revenue Accrued expenses and other current liabilities Increase (Decrease) in Accounts Payable and Accrued Liabilities Changes in noncurrent assets and liabilities Increase (Decrease) in Other Operating Assets and Liabilities, Net Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities Cash flows from investing activities: Net Cash Provided by (Used in) Investing Activities [Abstract] Acquisitions, net of cash acquired Payments to Acquire Businesses, Net of Cash Acquired Purchases of property and equipment Payments to Acquire Property, Plant, and Equipment Purchases of other long-term assets Payments to Acquire Other Productive Assets Other, net Payments for (Proceeds from) Other Investing Activities Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities Cash flows from financing activities: Net Cash Provided by (Used in) Financing Activities [Abstract] Proceeds from issuance of shares Proceeds from Issuance or Sale of Equity Repurchase of shares Payments for Repurchase of Common Stock Borrowings from revolving credit agreements Proceeds from Lines of Credit Repayments of revolving credit agreements Repayments of Lines of Credit Proceeds from Convertible Debt Proceeds from Convertible Debt Repayments of long-term debt obligations Repayments of capital lease obligations Repayments of Long-term Capital Lease Obligations Borrowings from short-term debt obligations, net Proceeds from (Repayments of) Short-term Debt Payments of Debt Issuance Costs Payments of Debt Issuance Costs Other, net Proceeds from (Payments for) Other Financing Activities Net cash provided by financing activities Net Cash Provided by (Used in) Financing Activities Effect of exchange rate changes on cash and cash equivalents and restricted cash Effect of Exchange Rate on Cash and Cash Equivalents Increase in cash and cash equivalents and restricted cash Cash, cash equivalents and restricted cash, Period increase (Decrease) Cash, cash equivalents and restricted cash, Period increase (Decrease) Cash and cash equivalents and restricted cash, period start Cash, cash equivalents and restricted cash Cash, cash equivalents and restricted cash Cash and cash equivalents and restricted cash, period end Interest paid during the period Interest Paid, Including Capitalized Interest, Operating and Investing Activities Income taxes paid during the period Income Taxes Paid Equity issued in connection with acquisitions Stock Issued During Period, Value, Acquisitions