DEBT OBLIGATIONS [Abstract] DEBT OBLIGATIONS [Abstract] Debt Obligations Debt Disclosure [Text Block] Segment Information [Abstract] Segment Information. Segment Information Segment Reporting Disclosure [Text Block] Earnings Per Share [Abstract] Schedule of Weighted Average Number of Shares [Table Text Block] Schedule of Weighted Average Number of Shares [Table Text Block] Fair Value Disclosures [Abstract] 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 [Axis] Fair Value, Hierarchy [Axis] Fair Value Hierarchy [Domain] Fair Value Hierarchy [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 Convertible Debt Convertible Debt Stockholders' Equity Attributable to Parent [Abstract] Stockholders' Equity [Table] Rights Agreement [Table] Rights Agreement [Table] 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] 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] Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Debt Instrument, Convertible, Conversion Price Debt Instrument, Convertible, Conversion Price Share Price Share Price Stock Repurchase Program, Authorized Amount Stock Repurchase Program, Authorized Amount Stock Repurchase Program, Number of Shares Authorized to be Repurchased Stock Repurchase Program, Number of Shares Authorized to be Repurchased Treasury Stock, Value, Acquired, Cost Method Treasury Stock, Value, Acquired, Cost Method 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 Prepaid content — PINs Inventory, Net Trade accounts receivable, net of allowances for doubtful accounts of $23,637 at March 31, 2018 and $20,958 at December 31, 2017 Accounts Receivable, Net, Current Prepaid expenses and other current assets Prepaid Expense and Other Assets, Current Total current assets Assets, Current Property and equipment, net of accumulated depreciation of $357,181 at March 31, 2018 and $340,128 at December 31, 2017 Property, Plant and Equipment, Net Goodwill Goodwill Acquired intangible assets, net of accumulated amortization of $187,761 at March 31, 2018 and $179,142 at December 31, 2017 Finite-Lived Intangible Assets, Net Other assets, net of accumulated amortization of $46,381 at March 31, 2018 and $44,469 at December 31, 2017 Other Assets, Noncurrent Total assets 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 Accrued Expenses And Other Current Liabilities Accrued expenses and other current liabilities. Current portion of capital lease obligations Capital Lease Obligations, 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 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; 59,020,849 issued at March 31, 2018 and 58,892,744 issued at December 31, 2017 Common Stock, Value, Issued Additional paid-in-capital Additional Paid in Capital, Common Stock Treasury stock, at cost, 7,515,228 shares at March 31, 2018 and 6,084,586 shares at December 31, 2017 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 Debt [Table Text Block] Schedule of Debt [Table Text Block] Income Statement [Abstract] Statement [Table] Revenues Revenue, Net Operating expenses: Costs and Expenses [Abstract] 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 Depreciation and amortization Depreciation, Depletion and Amortization, Nonproduction Total operating expenses Costs and Expenses Operating income Operating Income (Loss) Other income (expense): Nonoperating Income (Expense) [Abstract] Interest income Investment Income, Interest Interest expense Interest Expense Loss from unconsolidated affiliates Income (Loss) from Equity Method Investments Foreign currency exchange gain, net Foreign Currency Transaction Gain (Loss), before Tax Other gains Other Nonoperating Income (Expense) Other expense, 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 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] Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] 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] Number of Reportable Segments Number of Reportable Segments Acquired Intangible Asset Impairment Goodwill and Intangible Asset Impairment Total operating expenses Operating income (expense) Property, Plant and Equipment, Net Assets DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES [Abstract] DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES [Abstract] 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 Accounting Changes and Error Corrections [Abstract] New Accounting Pronouncements or Change in Accounting Principle [Table] New Accounting Pronouncements or Change in Accounting Principle [Table] Geographical [Axis] Geographical [Axis] Geographical [Domain] Geographical [Domain] North America [Member] North America [Member] Europe [Member] Europe [Member] Asia Pacific [Member] Asia Pacific [Member] Other geographic locations [Member] Other geographic locations [Member] Other geographic locations [Member] Eft Processing Segment [Member] Epay Segment [Member] Money Transfer Segment [Member] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Minimum [Member] Minimum [Member] Maximum [Member] Maximum [Member] 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 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] New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification Revenues Deferred Revenue, Additions Deferred Revenue, Additions Deferred Revenue, Revenue Recognized Deferred Revenue, Revenue Recognized Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities Cumulative Effect on Retained Earnings Cumulative Effect on Retained Earnings, Tax Deferred Tax Assets, Gross Deferred Tax Assets, Gross Deferred Tax Assets, Valuation Allowance Deferred Tax Assets, Valuation Allowance Net Cumulative Effect of New Accounting Principle in Period of Adoption Cumulative Effect of New Accounting Principle in Period of Adoption Schedule of Segment Reporting Information, by Segment [Table Text Block] Schedule of Segment Reporting Information, by Segment [Table Text Block] Accounting Policies [Abstract] 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] Goodwill and Intangible Assets Disclosure [Abstract] Schedule of Intangible Assets and Goodwill [Table Text Block] Schedule of Intangible Assets and Goodwill [Table Text Block] INCOME TAXES [Abstract] (10) INCOME TAXES [Abstract] Income Taxes Income Tax Disclosure [Text Block] Recently Issued Accounting Pronouncements Significant Accounting Policies [Text Block] ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES [Abstract] ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES [Abstract] 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 Fair Value Measurements Fair Value Disclosures [Text Block] Commitments Disclosure [Abstract] Commitments Disclosure [Abstract] Other Commitments [Table] Other Commitments [Table] Other Commitments [Axis] Other Commitments [Axis] Other Commitments [Domain] Other Commitments [Domain] Other Commitments [Line Items] Other Commitments [Line Items] Commitments Commitments Disclosure [Text Block] 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] Loss Contingencies [Line Items] Loss Contingencies [Line Items] 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] Organization, Consolidation and Presentation of Financial Statements [Abstract] General Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Balance Sheet Parentheticals [Abstract] Balance Sheet Parentheticals [Abstract] Class of Stock [Axis] Class of Stock [Axis] Class of Stock [Domain] Class of Stock [Domain] 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 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, Percent Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Valuation Allowances and Reserves, Deductions Valuation Allowances and Reserves, Deductions 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 Derivative Instruments and Hedging Activities Disclosures [Table] Derivative Instruments and Hedging Activities Disclosures [Table] Legal Entity [Axis] Entity [Domain] Trading Revenue [Member] Trading Revenue [Member] Ria Operations [Member] Ria Operations [Member] Ria Operations [Member] 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 Foreign Currency Exchange Margin Trading Activity, Gain 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] Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Credit Facility [Axis] Credit Facility [Axis] Credit Facility [Domain] Credit Facility [Domain] ATM Facility [Member] ATM Facility [Member] ATM Facility [Member] Revolving Credit Facility [Member] Revolving Credit Facility [Member] Term Loan A [Member] Term Loan A [Member] Debt Instrument [Line Items] Debt Instrument [Line Items] Total Debt [Roll Forward] Total Debt [Roll Forward] Term Loan A Loans Payable to Bank Revolving Credit Facility Long-term Line of Credit Line of Credit Facility, Fair Value of Amount Outstanding Line of Credit Facility, Fair Value of Amount Outstanding Other Debt Short-term Debt Debt, Long-term and Short-term, Combined Amount Debt, Long-term and Short-term, Combined Amount Unamortized Debt Issuance Expense Unamortized Debt Issuance Expense Debt, net of debt issuance costs Debt, net of debt issuance costs Total debt, net of debt issuance costs Long-term Debt, Current Maturities 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] Litigation and Contingencies Legal Matters and Contingencies [Text Block] 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] 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 Changes 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 Goodwill and Acquired Intangible Assets, Net Goodwill and Intangible Assets Disclosure [Text Block] Credit Agreement Disclosure [Abstract] Credit Agreement Disclosure [Abstract] 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] Term Loan A [Member] Senior Secured Credit Facility [Member] Senior Secured Credit Facility [Member] Senior Secured Credit Facility [Member] Reference rate [Axis] Reference rate [Axis] Reference rate [Axis] Reference Rate [Domain] Reference Rate [Domain] Reference Rate [Domain] LIBOR [Member] LIBOR [Member] LIBOR [Member] Base Rate [Member] Base Rate [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] Line of Credit Facility, Maximum Borrowing Capacity Line of Credit Facility, Maximum Borrowing Capacity Debt Instrument, Description of Variable Rate Basis Debt Instrument, Description of Variable Rate Basis Debt Instrument, Basis Spread on Variable Rate Debt Instrument, Basis Spread on Variable Rate Revolving Credit Facility, Interest Rate at Period End Line of Credit Facility, Interest Rate at Period End Term Loan A, Weighted Average Interest Rate Long-term Debt, Weighted Average Interest Rate 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 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 Stockholders' Equity Stockholders' Equity Note Disclosure [Text Block] Accrued Expenses and Other Current Liabilities Other Liabilities Disclosure [Text Block] Derivative Instruments and Hedging Activities Derivative Instruments and Hedging Activities Disclosure [Text Block] 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 Instruments Owned and Pledged as Collateral by Type [Axis] Financial Instruments Owned and Pledged as Collateral by Type [Axis] Financial Instruments Owned and Pledged as Collateral, Type [Domain] Financial Instruments Owned and Pledged as Collateral, Type [Domain] Cash and Cash Equivalents [Member] Cash and Cash Equivalents [Member] 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 Statement of Comprehensive Income [Abstract] Net income Translation adjustment Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Comprehensive income Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Comprehensive loss attributable to noncontrolling interests Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Comprehensive income attributable to Euronet Worldwide, Inc. Comprehensive Income (Loss), Net of Tax, Attributable to Parent 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] Derivative Instruments, Gain (Loss) [Table] Derivative Instruments, Gain (Loss) [Table] Ria Operations and Corporate [Member] Ria Operations and Corporate [Member] Ria Operations and Corporate [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 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 Document and Entity Information [Abstract] Document and Entity Information. Entities [Table] Entities [Table] Entity Information [Line Items] Entity Information [Line Items] 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 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 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 gain, net Foreign Currency Transaction Gain (Loss), Unrealized Deferred income taxes Deferred Income Tax Expense (Benefit) Loss from unconsolidated affiliates Accretion of convertible debt discount and amortization of debt issuance costs Amortization of Debt Issuance Costs and Discounts Changes in working capital, net of amounts acquired: Increase (Decrease) in Operating Capital [Abstract] Income taxes payable, net Increase (Decrease) in Income Taxes Payable Restricted cash Increase (Decrease) in Restricted Cash for Operating Activities Inventory - PINs and other Increase (Decrease) in Inventories 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 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 Repayments of long-term debt obligations Repayments of Other Long-term Debt Repayments of capital lease obligations Repayments of Long-term Capital Lease Obligations Borrowings from (repayments of) short-term debt obligations, net Proceeds from (Repayments of) Short-term Debt Other, net Proceeds from (Payments for) Other Financing Activities Net cash provided by (used in) financing activities Net Cash Provided by (Used in) Financing Activities Effect of exchange rate changes on cash and cash equivalents Effect of Exchange Rate on Cash and Cash Equivalents Effect of Exchange Rate on Cash, Cash Equivalents and Restricted Cash Effect of Exchange Rate on Cash, Cash Equivalents and Restricted Cash Effect of Exchange Rate on Cash, Cash Equivalents and Restricted Cash Increase in cash and cash equivalents Cash and Cash Equivalents, Period Increase (Decrease) Cash, cash equivalents and restricted cash, Period increase Cash, cash equivalents and restricted cash, Period increase (Decrease) Cash, cash equivalents and restricted cash, Period increase (Decrease) Cash, cash equivalents and restricted cash, beginning of period Cash, cash equivalents and restricted cash Cash, cash equivalents and restricted cash Cash, cash equivalents and restricted cash, end of period Interest paid during the period Interest Paid Income taxes paid during the period Income Taxes Paid