0000001 - Document - Cover Page link:presentationLink link:calculationLink link:definitionLink 0000002 - Document - Audit Information link:presentationLink link:calculationLink link:definitionLink 0000003 - Statement - CONSOLIDATED BALANCE SHEETS link:presentationLink link:calculationLink link:definitionLink 0000004 - Statement - CONSOLIDATED BALANCE SHEETS (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 0000005 - Statement - CONSOLIDATED STATEMENTS OF INCOME link:presentationLink link:calculationLink link:definitionLink 0000006 - Statement - CONSOLIDATED STATEMENTS OF INCOME (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 0000007 - Statement - CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME link:presentationLink link:calculationLink link:definitionLink 0000008 - Statement - CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY link:presentationLink link:calculationLink link:definitionLink 0000009 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS link:presentationLink link:calculationLink link:definitionLink 0000010 - Statement - CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 0000011 - Disclosure - Organization link:presentationLink link:calculationLink link:definitionLink 0000012 - Disclosure - Summary of Significant Accounting Policies link:presentationLink link:calculationLink link:definitionLink 0000013 - Disclosure - Segment and Geographical Information link:presentationLink link:calculationLink link:definitionLink 0000014 - Disclosure - Revenues, net and Accounts Receivable, net link:presentationLink link:calculationLink link:definitionLink 0000015 - Disclosure - Earnings Per Share link:presentationLink link:calculationLink link:definitionLink 0000016 - Disclosure - Other Income/(Expense), net link:presentationLink link:calculationLink link:definitionLink 0000017 - Disclosure - Cash, Cash Equivalents and Restricted Cash link:presentationLink link:calculationLink link:definitionLink 0000018 - Disclosure - Investments link:presentationLink link:calculationLink link:definitionLink 0000019 - Disclosure - Property and Equipment link:presentationLink link:calculationLink link:definitionLink 0000020 - Disclosure - Goodwill and Other Intangible Assets link:presentationLink link:calculationLink link:definitionLink 0000021 - Disclosure - Other Current Assets link:presentationLink link:calculationLink link:definitionLink 0000022 - Disclosure - Other Assets link:presentationLink link:calculationLink link:definitionLink 0000023 - Disclosure - Accrued Expenses and Other Current Liabilities link:presentationLink link:calculationLink link:definitionLink 0000024 - Disclosure - Other Non-Current Liabilities link:presentationLink link:calculationLink link:definitionLink 0000025 - Disclosure - Accumulated Other Comprehensive Income/( Loss) link:presentationLink link:calculationLink link:definitionLink 0000026 - Disclosure - Fair Value Measurements link:presentationLink link:calculationLink link:definitionLink 0000027 - Disclosure - Derivatives and Hedge Accounting link:presentationLink link:calculationLink link:definitionLink 0000028 - Disclosure - Borrowings link:presentationLink link:calculationLink link:definitionLink 0000029 - Disclosure - Capital Structure link:presentationLink link:calculationLink link:definitionLink 0000030 - Disclosure - Employee Benefit Plans link:presentationLink link:calculationLink link:definitionLink 0000031 - Disclosure - Leases link:presentationLink link:calculationLink link:definitionLink 0000032 - Disclosure - Income Taxes link:presentationLink link:calculationLink link:definitionLink 0000033 - Disclosure - Stock Based Compensation link:presentationLink link:calculationLink link:definitionLink 0000034 - Disclosure - Related Party Disclosures link:presentationLink link:calculationLink link:definitionLink 0000035 - Disclosure - Commitments and Contingencies link:presentationLink link:calculationLink link:definitionLink 0000036 - Disclosure - Subsequent Events link:presentationLink link:calculationLink link:definitionLink 9954471 - Disclosure - Summary of Significant Accounting Policies (Policies) link:presentationLink link:calculationLink link:definitionLink 9954472 - Disclosure - Summary of Significant Accounting Policies (Tables) link:presentationLink link:calculationLink link:definitionLink 9954473 - Disclosure - Segment and Geographical Information (Tables) link:presentationLink link:calculationLink link:definitionLink 9954474 - Disclosure - Revenues, net and Accounts Receivable, net (Tables) link:presentationLink link:calculationLink link:definitionLink 9954475 - Disclosure - Earnings Per Share (Tables) link:presentationLink link:calculationLink link:definitionLink 9954476 - Disclosure - Other Income/(Expense), net (Tables) link:presentationLink link:calculationLink link:definitionLink 9954477 - Disclosure - Cash, Cash Equivalents and Restricted Cash (Tables) link:presentationLink link:calculationLink link:definitionLink 9954478 - Disclosure - Investments (Tables) link:presentationLink link:calculationLink link:definitionLink 9954479 - Disclosure - Property and Equipment (Tables) link:presentationLink link:calculationLink link:definitionLink 9954480 - Disclosure - Goodwill and Other Intangible Assets (Tables) link:presentationLink link:calculationLink link:definitionLink 9954481 - Disclosure - Other Current Assets (Tables) link:presentationLink link:calculationLink link:definitionLink 9954482 - Disclosure - Other Assets (Tables) link:presentationLink link:calculationLink link:definitionLink 9954483 - Disclosure - Accrued Expenses and Other Current Liabilities (Tables) link:presentationLink link:calculationLink link:definitionLink 9954484 - Disclosure - Other Non-Current Liabilities (Tables) link:presentationLink link:calculationLink link:definitionLink 9954485 - Disclosure - Accumulated Other Comprehensive Income/( Loss) (Tables) link:presentationLink link:calculationLink link:definitionLink 9954486 - Disclosure - Fair Value Measurements (Tables) link:presentationLink link:calculationLink link:definitionLink 9954487 - Disclosure - Derivatives and Hedge Accounting (Tables) link:presentationLink link:calculationLink link:definitionLink 9954488 - Disclosure - Borrowings (Tables) link:presentationLink link:calculationLink link:definitionLink 9954489 - Disclosure - Capital Structure (Tables) link:presentationLink link:calculationLink link:definitionLink 9954490 - Disclosure - Employee Benefit Plans (Tables) link:presentationLink link:calculationLink link:definitionLink 9954491 - Disclosure - Leases (Tables) link:presentationLink link:calculationLink link:definitionLink 9954492 - Disclosure - Income Taxes (Tables) link:presentationLink link:calculationLink link:definitionLink 9954493 - Disclosure - Stock Based Compensation (Tables) link:presentationLink link:calculationLink link:definitionLink 9954494 - Disclosure - Related Party Disclosures (Tables) link:presentationLink link:calculationLink link:definitionLink 9954495 - Disclosure - Summary of Significant Accounting Policies - Summary of Revenues and Reimbursements (Details) link:presentationLink link:calculationLink link:definitionLink 9954496 - Disclosure - Summary of Significant Accounting Policies - Schedule of Property and Equipment, Estimated Useful Lives (Details) link:presentationLink link:calculationLink link:definitionLink 9954497 - Disclosure - Summary of Significant Accounting Policies - Summary of Lived Intangible Assets Amortized over their Estimated Useful Lives (Detail) link:presentationLink link:calculationLink link:definitionLink 9954498 - Disclosure - Summary of Significant Accounting Policies - Share-Based Compensation (Details) link:presentationLink link:calculationLink link:definitionLink 9954499 - Disclosure - Segment and Geographical Information - Additional Information (Detail) link:presentationLink link:calculationLink link:definitionLink 9954500 - Disclosure - Segment and Geographical Information - Revenues and Cost of Revenues for Company's Reportable Segments (Detail) link:presentationLink link:calculationLink link:definitionLink 9954501 - Disclosure - Segment and Geographical Information - Revenues Based on Geographical Information (Details) link:presentationLink link:calculationLink link:definitionLink 9954502 - Disclosure - Segment and Geographical Information - Property, Plant and Equipment, Net Based on Geographical Information (Details) link:presentationLink link:calculationLink link:definitionLink 9954503 - Disclosure - Revenues, net and Accounts Receivable, net - Contracts with Customer, Receivables, Assets and Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 9954504 - Disclosure - Revenues, net and Accounts Receivable, net - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9954505 - Disclosure - Revenues, net and Accounts Receivable, net - Contract with Customer Revenue Recognized (Details) link:presentationLink link:calculationLink link:definitionLink 9954506 - Disclosure - Revenues, net and Accounts Receivable, net - Contract Acquisition and Fulfillment Costs (Details) link:presentationLink link:calculationLink link:definitionLink 9954507 - Disclosure - Revenues, net and Accounts Receivable, net - Accounts Receivable, Net (Details) link:presentationLink link:calculationLink link:definitionLink 9954508 - Disclosure - Revenues, net and Accounts Receivable, net - Allowance for Credit Loss (Details) link:presentationLink link:calculationLink link:definitionLink 9954509 - Disclosure - Earnings Per Share (Details) link:presentationLink link:calculationLink link:definitionLink 9954510 - Disclosure - Other Income/(Expense), net - Summary of Other Income, net (Details) link:presentationLink link:calculationLink link:definitionLink 9954511 - Disclosure - Cash, Cash Equivalents and Restricted Cash (Details) link:presentationLink link:calculationLink link:definitionLink 9954512 - Disclosure - Investments - Summary of Investments (Details) link:presentationLink link:calculationLink link:definitionLink 9954513 - Disclosure - Property and Equipment - Schedule of Property and Equipment (Detail) link:presentationLink link:calculationLink link:definitionLink 9954514 - Disclosure - Property and Equipment - Depreciation and Amortization Expense and Effect of Foreign Exchange Gain (Detail) link:presentationLink link:calculationLink link:definitionLink 9954515 - Disclosure - Property and Equipment - Internally Developed Software Costs, Included under Software (Details) link:presentationLink link:calculationLink link:definitionLink 9954516 - Disclosure - Property and Equipment - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9954517 - Disclosure - Goodwill and Other Intangible Assets - Summary of Company's Goodwill (Detail) link:presentationLink link:calculationLink link:definitionLink 9954518 - Disclosure - Goodwill and Other Intangible Assets - Summary of Company's Intangible Assets (Details) link:presentationLink link:calculationLink link:definitionLink 9954518 - Disclosure - Goodwill and Other Intangible Assets - Summary of Company's Intangible Assets (Details) link:presentationLink link:calculationLink link:definitionLink 9954519 - Disclosure - Goodwill and Other Intangible Assets - Amortization of Intangible Assets (Details) link:presentationLink link:calculationLink link:definitionLink 9954520 - Disclosure - Goodwill and Other Intangible Assets - Estimated Future Amortization of Intangible Assets (Detail) link:presentationLink link:calculationLink link:definitionLink 9954521 - Disclosure - Other Current Assets - Schedule of Other Current Assets (Details) link:presentationLink link:calculationLink link:definitionLink 9954522 - Disclosure - Other Assets (Details) link:presentationLink link:calculationLink link:definitionLink 9954523 - Disclosure - Accrued Expenses and Other Current Liabilities - Summary of Accrued Expenses and Other Current Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 9954524 - Disclosure - Other Non-Current liabilities - Summary of Other Non-Current Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 9954525 - Disclosure - Accumulated Other Comprehensive Income/( Loss) - Summary of Accumulated Other Comprehensive Income/( Loss) (Details) link:presentationLink link:calculationLink link:definitionLink 9954526 - Disclosure - Fair Value Measurements - Assets and Liabilities Measured at Fair Value (Detail) link:presentationLink link:calculationLink link:definitionLink 9954527 - Disclosure - Fair Value Measurements - Changes in the fair value of contingent consideration (Details) link:presentationLink link:calculationLink link:definitionLink 9954528 - Disclosure - Fair Value Measurements - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9954529 - Disclosure - Derivatives and Hedge Accounting - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9954530 - Disclosure - Derivatives and Hedge Accounting - Foreign Currency Forward Contracts (Detail) link:presentationLink link:calculationLink link:definitionLink 9954531 - Disclosure - Derivatives and Hedge Accounting - Summary of Fair Value of Foreign Currency Exchange Contracts (Detail) link:presentationLink link:calculationLink link:definitionLink 9954532 - Disclosure - Derivatives and Hedge Accounting - Summary of Effect of Foreign Currency Exchange Contracts (Detail) link:presentationLink link:calculationLink link:definitionLink 9954533 - Disclosure - Derivatives and Hedge Accounting - Location of Gain or Loss Recognized (Details) link:presentationLink link:calculationLink link:definitionLink 9954534 - Disclosure - Derivatives and Hedge Accounting - Effect of Net Investment Hedges on AOCI/(L) (Details) link:presentationLink link:calculationLink link:definitionLink 9954535 - Disclosure - Borrowings - Company's Debt Position (Details) link:presentationLink link:calculationLink link:definitionLink 9954536 - Disclosure - Borrowings - Additional Information (Detail) link:presentationLink link:calculationLink link:definitionLink 9954537 - Disclosure - Borrowings - Credit Facilities Carried an Effective Interest Rate (Details) link:presentationLink link:calculationLink link:definitionLink 9954538 - Disclosure - Borrowings - Maturities of Borrowings (Details) link:presentationLink link:calculationLink link:definitionLink 9954539 - Disclosure - Capital Structure - Additional Information (Detail) link:presentationLink link:calculationLink link:definitionLink 9954540 - Disclosure - Capital Structure - Purchase of Common Stock from Employees Withholding Tax Payments Related to Vesting of Restricted Stock (Details link:presentationLink link:calculationLink link:definitionLink 9954541 - Disclosure - Capital Structure - Purchased Shares of its Common Stock, Including Commissions (Details) link:presentationLink link:calculationLink link:definitionLink 9954542 - Disclosure - Employee Benefit Plans - Additional Information (Detail) link:presentationLink link:calculationLink link:definitionLink 9954543 - Disclosure - Employee Benefit Plans - Summary of Change in Projected Benefit Obligation (Detail) link:presentationLink link:calculationLink link:definitionLink 9954544 - Disclosure - Employee Benefit Plans - Net Period Benefit Costs (Detail) link:presentationLink link:calculationLink link:definitionLink 9954545 - Disclosure - Employee Benefit Plans - Summary of Components of Actuarial Gain/(Loss) (Detail) link:presentationLink link:calculationLink link:definitionLink 9954546 - Disclosure - Employee Benefit Plans - Summary of Weighted Average Actuarial Assumptions (Detail) link:presentationLink link:calculationLink link:definitionLink 9954547 - Disclosure - Employee Benefit Plans - Summary of Expected Benefit Payments (Detail) link:presentationLink link:calculationLink link:definitionLink 9954548 - Disclosure - Employee Benefit Plans - Contribution Plan (Details) link:presentationLink link:calculationLink link:definitionLink 9954549 - Disclosure - Leases - Supplemental Balance Sheet Information (Details) link:presentationLink link:calculationLink link:definitionLink 9954550 - Disclosure - Leases - Components of Lease Cost (Details) link:presentationLink link:calculationLink link:definitionLink 9954551 - Disclosure - Leases - Supplemental Cash Flow Information Related to Leases (Details) link:presentationLink link:calculationLink link:definitionLink 9954552 - Disclosure - Leases - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9954553 - Disclosure - Leases - Maturities of Lease Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 9954553 - Disclosure - Leases - Maturities of Lease Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 9954554 - Disclosure - Income Taxes - Summary of Components of Income / (Loss) Before Income Taxes (Detail) link:presentationLink link:calculationLink link:definitionLink 9954555 - Disclosure - Income Taxes - Summary of Income Tax Expense / (Benefit) (Detail) link:presentationLink link:calculationLink link:definitionLink 9954556 - Disclosure - Income Taxes - Summary of Income Taxes Recognized in Other Comprehensive Income (Details) link:presentationLink link:calculationLink link:definitionLink 9954557 - Disclosure - Income Taxes - Summary of Effective Income Tax Rate Differs from Amount Computed by Applying U.S. Federal Statutory Income Tax Rate to Income Before Income Taxes (Detail) link:presentationLink link:calculationLink link:definitionLink 9954558 - Disclosure - Income Taxes - Additional Information (Detail) link:presentationLink link:calculationLink link:definitionLink 9954559 - Disclosure - Income Taxes - Summary of Components of Deferred Tax Balances (Detail) link:presentationLink link:calculationLink link:definitionLink 9954560 - Disclosure - Income Taxes - Summary of Activity Related to Gross Unrecognized Tax Benefits (Detail) link:presentationLink link:calculationLink link:definitionLink 9954561 - Disclosure - Stock Based Compensation - Additional Information (Detail) link:presentationLink link:calculationLink link:definitionLink 9954562 - Disclosure - Stock Based Compensation - Costs Related to Company's Stock Based Compensation Plan (Detail) link:presentationLink link:calculationLink link:definitionLink 9954563 - Disclosure - Stock Based Compensation - Stock Based Compensation Stock Option Activity (Detail) link:presentationLink link:calculationLink link:definitionLink 9954564 - Disclosure - Stock Based Compensation - Stock Options Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9954565 - Disclosure - Stock-Based Compensation - Schedule of Share-Based Compensation, Employee Stock Purchase Plan (Details) link:presentationLink link:calculationLink link:definitionLink 9954566 - Disclosure - Stock Based Compensation - Stock Options Exercised (Details) link:presentationLink link:calculationLink link:definitionLink 9954567 - Disclosure - Stock Based Compensation - Share Matching Program Narrative (Detail) link:presentationLink link:calculationLink link:definitionLink 9954568 - Disclosure - Stock Based Compensation - Restricted Stock Unit Activity Under Company's Stock Plans (Detail) link:presentationLink link:calculationLink link:definitionLink 9954569 - Disclosure - Stock Based Compensation - Restricted Stock Units Fair Value (Details) link:presentationLink link:calculationLink link:definitionLink 9954570 - Disclosure - Stock Based Compensation - Performance Based Stock Awards Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9954571 - Disclosure - Stock Based Compensation - Summary of Weighted Average Valuation Assumptions for Market Condition Performance Restricted Stock Units (Details) link:presentationLink link:calculationLink link:definitionLink 9954572 - Disclosure - Stock Based Compensation - Performance Restricted Stock Activity (Details) link:presentationLink link:calculationLink link:definitionLink 9954573 - Disclosure - Stock Based Compensation - Employee Stock Purchase Plan Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9954574 - Disclosure - Stock-Based Compensation - Schedule of Share-Based Compensation, Employee Stock Purchase Activity (Details) link:presentationLink link:calculationLink link:definitionLink 9954575 - Disclosure - Stock-Based Compensation - Schedule of Share-Based Compensation, Employee Stock Purchase Plan (Details) link:presentationLink link:calculationLink link:definitionLink 9954576 - Disclosure - Related Party Disclosures - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9954577 - Disclosure - Related Party Disclosures (Details) link:presentationLink link:calculationLink link:definitionLink 9954578 - Disclosure - Commitments and Contingencies - Additional Information (Detail) link:presentationLink link:calculationLink link:definitionLink 9954579 - Disclosure - Subsequent Events (Details) link:presentationLink link:calculationLink link:definitionLink