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Document Type Document Type Amendment Flag Amendment Flag Document Period End Date Document Period End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Trading Symbol Trading Symbol 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 Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Segment Reporting [Abstract] Segments Segment Reporting Disclosure [Text Block] Accounting Policies [Abstract] 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 Accounting Standards Update 2014-09 [Member] Accounting Standards Update 2016-15 Accounting Standards Update 2016-15 [Member] Initial Application Period Cumulative 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payable and other obligations, less current portion Other noncurrent liabilities Other Liabilities, Noncurrent Total noncurrent liabilities Liabilities, Noncurrent Commitments and contingencies Commitments and Contingencies Stockholders’ equity: Stockholders' Equity Attributable to Parent [Abstract] Common stock, $0.001 par value; 475,000,000 shares authorized; 122,551,794 shares issued and 88,376,611 shares outstanding at June 30, 2018; and 122,083,059 shares issued and 89,803,982 shares outstanding at December 31, 2017 Common Stock, Value, Issued Additional paid-in capital Additional Paid in Capital, Common Stock Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Less treasury stock (34,175,183 shares at June 30, 2018 and 32,279,077 shares at December 31, 2017) Treasury Stock, Value Total stockholders’ equity Stockholders' Equity Attributable to Parent Total liabilities and stockholders’ equity Liabilities and Equity Schedule of Stock by 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Cash Equivalents, Fair Value Disclosure Foreign exchange contracts Derivative Asset Total cash equivalents Assets, Fair Value Disclosure Cash collateral for foreign exchange contracts Derivative, Collateral, Obligation to Return Cash Liabilities: Derivative Liability [Abstract] Foreign exchange contracts Derivative Liability Total liabilities Financial and Nonfinancial Liabilities, Fair Value Disclosure Cash collateral obligation for foreign exchange contracts Derivative, Collateral, Right to Reclaim Cash Acquisitions Prior to 2018 Acquisitions Prior to 2018 [Member] Acquisitions Prior to 2018 [Member] 2017 Acquisitions 2017 Acquisitions [Member] 2017 Acquisitions [Member] Investments in other businesses Payments for (Proceeds from) Other Investing Activities Deferred payments for acquisitions in previous years Payments to Acquire Businesses, Net of Cash Acquired Aggregate purchase price Business Combination, Consideration Transferred Cash acquired from acquisition Cash Acquired from 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[Member] Expenses: Costs and Expenses [Abstract] Merchant commissions Sales Commissions and Fees Processing Processing Expenses Expenses recognized in the period related to processing transactions, servicing our customers and merchants and bad debt expense. Selling Selling Expense General and administrative General and Administrative Expense Operating income Total other expense Nonoperating Income (Expense) Income before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Provision for income taxes Net income Impact of foreign exchange rates on intangible assets Finite Lived Intangible Assets, Foreign Currency Translation Gain (Loss) Amortization expense of intangible assets Amortization of Intangible Assets Stock-Based Compensation Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Risk-free interest rate Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate Dividend yield Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate Expected volatility Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected 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Deferred Income Taxes and Tax Credits Investment loss Income (Loss) from Equity Method Investments Other non-cash operating income Other Noncash Income (Expense) Changes in operating assets and liabilities (net of acquisitions): Increase (Decrease) in Operating Capital [Abstract] Accounts and other receivables Increase (Decrease) in Accounts Receivable Prepaid expenses and other current assets Increase (Decrease) in Prepaid Expense and Other Assets Other assets Increase (Decrease) in Other Operating Assets Accounts payable, accrued expenses and customer deposits Increase (Decrease) in Accounts Payable and Accrued Liabilities Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities Investing activities Net Cash Provided by (Used in) Investing Activities, Continuing Operations [Abstract] Acquisitions, net of cash acquired Purchases of property and equipment Other Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities Financing activities Net Cash Provided by (Used in) Financing Activities, Continuing Operations [Abstract] Proceeds from issuance of common stock Proceeds from Issuance of Common Stock Repurchase of common stock Borrowings on securitization facility, net Proceeds from Issuance of Secured Debt Principal payments on notes payable Repayments of Notes Payable Borrowings from revolver Proceeds from Short-term Debt, Maturing in More than Three Months Payments on revolver Repayments of Short-term Debt, Maturing in More than Three Months Borrowings on swing line of credit, net Proceeds from Lines of Credit Other Proceeds from (Payments for) Other Financing Activities Net cash used in financing activities Net Cash Provided by (Used in) Financing Activities Effect of foreign currency exchange rates on cash Effect of Exchange Rate on Cash and Cash Equivalents Net increase in cash and cash equivalents and restricted cash Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Cash and cash equivalents and restricted cash, beginning of period Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Cash and cash equivalents and restricted cash, end of period Supplemental cash flow information Supplemental Cash Flow Information [Abstract] Cash paid for interest Interest Paid, Excluding Capitalized Interest, Operating Activities Cash paid for income taxes Income Taxes Paid, Net Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Antidilutive Securities [Axis] Antidilutive Securities [Axis] Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Performance Based Restricted Stock Performance Shares [Member] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive shares excluded from computation of earnings per share (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] Shares at beginning of period (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross Exercised (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Forfeited (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period Shares at end of period (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Weighted average exercise price, beginning of period (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price Weighted average exercise price, granted (in dollars per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Weighted average exercise price, exercised (in dollars per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Weighted average exercise price, forfeitures (in dollars per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price Weighted average exercise price, end of period (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract] Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract] Expected to vest (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number Weighted average exercise price, expected to vest (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price Options exercisable at beginning of period (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number Weighted average exercise price of exercisable options, beginning of period (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price Weighted average exercise price of granted options (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value Aggregate intrinsic value Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value Aggregate intrinsic value, exercised Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value Schedule of New Accounting Pronouncements and Changes in Accounting Principles Schedule of New Accounting Pronouncements and Changes in Accounting Principles [Table Text Block] Income Statement [Abstract] Other expense (income), net Other Nonoperating Income (Expense) Interest expense, net Interest Income (Expense), Net Earnings per share: Weighted average shares outstanding: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Basic weighted average shares outstanding (in shares) Diluted weighted average shares outstanding (in shares) Variable Rate [Axis] Variable Rate [Axis] Variable Rate [Domain] Variable Rate [Domain] Federal Funds Rate Plus Federal Funds Rate Plus [Member] Federal Funds Rate Plus [Member] Eurodollar Eurodollar [Member] Base Rate Base Rate [Member] London Interbank Offered Rate (LIBOR) London Interbank Offered Rate (LIBOR) [Member] Blended Rate Of LIBOR And Commercial Paper Rates Based On Weighted Average Advance Blended Rate Of LIBOR And Commercial Paper Rates Based On Weighted Average Advance [Member] Blended Rate Of LIBOR And Commercial Paper Rates Based On Weighted Average Advance [Member] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Secured Debt Secured Debt [Member] Term A Loan Facility Term A Loan Facility [Member] Term A Loan Facility [Member] Term Loan A Term Loan A [Member] Term loan a. Term Loan B Term Loan B [Member] Term loan b. Revolving A Facility Revolving Credit Facility [Member] Revolving B Facility Revolving Credit Facility Two [Member] Revolving Credit Facility Two [Member] Revolving C Facility Revolving Credit Facility Three [Member] Revolving Credit Facility Three [Member] Commercial Paper Commercial Paper [Member] Amended securitization facility Additional borrowing capacity Line Of Credit Facility Additional Available Borrowing Capacity Line Of Credit Facility Additional Available Borrowing Capacity Unused facility fee, as percentage of unused portion Line of Credit Facility, Unused Capacity, Commitment Fee Percentage Line of credit facility initial borrowing, unamortized debt discount Debt Instrument, Unamortized Discount Deferred finance costs Debt Instrument, Deferred Finance Costs Debt Instrument, Deferred Finance Costs Effective interest rate Line of Credit Facility, Interest Rate During Period Program fee Debt Instrument, Description of Variable Rate Basis Basis spread on variable rate Debt Instrument, Basis Spread on Variable Rate Program fee rate Line of Credit Facility, Commitment Fee Percentage Financial Assets and Liabilities Measured at Fair Value Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Statement of Comprehensive Income [Abstract] Other comprehensive (loss) income: Other Comprehensive Income (Loss), Net of Tax [Abstract] Foreign currency translation (losses) gains, net of tax Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax Total other comprehensive (loss) income Other Comprehensive Income (Loss), Net of Tax Total comprehensive (loss) income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Consolidation Items [Axis] Consolidation Items [Axis] Consolidation Items [Domain] Consolidation Items [Domain] Intersegment Eliminations Intersegment Eliminations [Member] Number of reportable segments Number of Reportable Segments Intersegment sales Schedule of Company's Segment Results Schedule of Segment Reporting Information, by Segment [Table Text Block] Banking Relationship Banking Relationship [Member] Banking Relationship [Member] Customer relationships and other identifiable intangible assets Customer Relationships Accounts Payable Solutions [Member] Customer Relationships Accounts Payable Solutions [Member] Technology Technology Equipment [Member] Customer Relationships Customer Relationships [Member] Useful Lives (in Years) Finite-lived intangible assets Customer relationships—Accounts Payable Solutions Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Indefinite-Lived Intangible Assets Other intangible assets