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Statement - Consolidated Statements of Cash Flows link:calculationLink link:presentationLink link:definitionLink 1011 - Statement - Consolidated Statements of Cash Flows (Parenthetical) link:calculationLink link:presentationLink link:definitionLink 1012 - Disclosure - Nature of Entity link:calculationLink link:presentationLink link:definitionLink 1013 - Disclosure - Summary of Significant Accounting Policies link:calculationLink link:presentationLink link:definitionLink 1014 - Disclosure - Acquisitions link:calculationLink link:presentationLink link:definitionLink 1015 - Disclosure - Revenue link:calculationLink link:presentationLink link:definitionLink 1016 - Disclosure - Fair Value Measurements link:calculationLink link:presentationLink link:definitionLink 1017 - Disclosure - Available-For-Sale Securities link:calculationLink link:presentationLink link:definitionLink 1018 - Disclosure - Derivative Financial Instruments link:calculationLink link:presentationLink link:definitionLink 1019 - 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Disclosure - Revenue (Tables) link:calculationLink link:presentationLink link:definitionLink 1038 - Disclosure - Fair Value Measurements (Tables) link:calculationLink link:presentationLink link:definitionLink 1039 - Disclosure - Available-For-Sale Securities (Tables) link:calculationLink link:presentationLink link:definitionLink 1040 - Disclosure - Derivative Financial Instruments (Tables) link:calculationLink link:presentationLink link:definitionLink 1041 - Disclosure - Property and Equipment, Net (Tables) link:calculationLink link:presentationLink link:definitionLink 1042 - Disclosure - Goodwill and Intangible Assets, Net (Tables) link:calculationLink link:presentationLink link:definitionLink 1043 - Disclosure - Income Taxes (Tables) link:calculationLink link:presentationLink link:definitionLink 1044 - Disclosure - Accrued Expenses and Other Current Liabilities (Tables) link:calculationLink link:presentationLink link:definitionLink 1045 - Disclosure - Interest and other expense, net (Tables) link:calculationLink link:presentationLink link:definitionLink 1046 - Disclosure - Contingencies and Commitments (Tables) link:calculationLink link:presentationLink link:definitionLink 1047 - Disclosure - Stock Option and Incentive Plan (Tables) link:calculationLink link:presentationLink link:definitionLink 1048 - Disclosure - Dividends (Tables) link:calculationLink link:presentationLink link:definitionLink 1049 - Disclosure - Earnings Per Share (Tables) link:calculationLink link:presentationLink link:definitionLink 1050 - Disclosure - Segment Information and Sales to Significant Customers (Tables) link:calculationLink link:presentationLink link:definitionLink 1051 - Disclosure - Selected Quarterly Results of Operations (Unaudited) (Tables) link:calculationLink link:presentationLink link:definitionLink 1052 - Disclosure - Nature of Entity - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 1053 - Disclosure - Summary of Significant Accounting Policies - Consolidation and Property and Equipment - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 1054 - Disclosure - Summary of Significant Accounting Policies - Revenue Recognition and Concentrations of Credit Risk - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 1055 - Disclosure - Summary of Significant Accounting Policies - Summary of Impact of Adoption of ASC 606 on Consolidated Balance Sheet (Detail) link:calculationLink link:presentationLink link:definitionLink 1056 - Disclosure - Acquisitions - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 1057 - Disclosure - Revenue - Summary of Accounts Receivable Billed and Unbilled and Deferred Revenue (Detail) link:calculationLink link:presentationLink link:definitionLink 1058 - Disclosure - Revenue - Summary of Accounts Receivable Billed and Unbilled and Deferred Revenue (Parenthetical) (Detail) link:calculationLink link:presentationLink link:definitionLink 1059 - Disclosure - Revenue - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 991060 - Disclosure - Revenue - Additional Information (Detail 1) link:calculationLink link:presentationLink link:definitionLink 1060 - Disclosure - Fair Value Measurements - Fair Value Measurement on Company's Assets and Liabilities (Detail) link:calculationLink link:presentationLink link:definitionLink 1061 - Disclosure - Available-for-Sale Securities - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 1062 - Disclosure - Available-for-Sale Securities - Interest-bearing Investments in Available-for-Sale Securities (Detail) link:calculationLink link:presentationLink link:definitionLink 1063 - Disclosure - Available-for-Sale Securities - Interest-bearing Investments in Available-for-Sale Securities (Parenthetical) (Detail) link:calculationLink link:presentationLink link:definitionLink 1064 - Disclosure - Available-for-Sale Securities - Available-for-Sale Securities Debt Maturities Market Value (Detail) link:calculationLink link:presentationLink link:definitionLink 1065 - Disclosure - Derivative Financial Instruments - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 1066 - Disclosure - Derivative Financial Instruments - Notional Amounts of Derivative Instruments (Detail) link:calculationLink link:presentationLink link:definitionLink 1067 - Disclosure - Derivative Financial Instruments - Fair Value of Open Foreign Currency Exchange Contracts (Detail) link:calculationLink link:presentationLink link:definitionLink 1068 - Disclosure - Derivative Financial Instruments - Effect of Cash Flow Hedging Instruments (Detail) link:calculationLink link:presentationLink link:definitionLink 1069 - Disclosure - Derivative Financial Instruments - Changes in Net Unrealized Gains (Losses) on Cash Flow Hedges (Detail) link:calculationLink link:presentationLink link:definitionLink 1070 - Disclosure - Derivative Financial Instruments - Effect of Non-Designated as Hedging Instruments (Detail) link:calculationLink link:presentationLink link:definitionLink 1071 - Disclosure - Property and Equipment, Net - Components of Property and Equipment, Net (Detail) link:calculationLink link:presentationLink link:definitionLink 1072 - Disclosure - Property and Equipment, Net - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 1073 - Disclosure - Goodwill and Intangible Assets, Net - Details of Total Goodwill (Detail) link:calculationLink link:presentationLink link:definitionLink 1074 - Disclosure - Goodwill and Intangible Assets, Net - Details of Total Goodwill (Parenthetical) (Detail) link:calculationLink link:presentationLink link:definitionLink 1075 - Disclosure - Goodwill and Intangible Assets, Net - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 1076 - Disclosure - Goodwill and Intangible Assets, Net - Details Regarding Total Definite-Lived Purchased Intangible Assets (Detail) link:calculationLink link:presentationLink link:definitionLink 1077 - Disclosure - Goodwill and Intangible Assets, Net - Details Regarding Total Definite-Lived Purchased Intangible Assets (Parenthetical) (Detail) link:calculationLink link:presentationLink link:definitionLink 1078 - Disclosure - Goodwill and Intangible Assets, Net - Amortization Expense on Definite-Lived Intangible Assets (Detail) link:calculationLink link:presentationLink link:definitionLink 1079 - Disclosure - Goodwill and Intangible Assets, Net - Estimated Future Amortization Expense (Detail) link:calculationLink link:presentationLink link:definitionLink 1080 - Disclosure - Non-recurring charges - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 1081 - Disclosure - Income Taxes - Provision (Benefit) for Income Taxes (Detail) link:calculationLink link:presentationLink link:definitionLink 1082 - Disclosure - Income Taxes - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 1083 - Disclosure - Income Taxes - Components of Deferred Tax Assets and Liabilities (Detail) link:calculationLink link:presentationLink link:definitionLink 1084 - Disclosure - Income Taxes - Effective Income Tax Rate Varied from Statutory Guernsey Tax Rate (Detail) link:calculationLink link:presentationLink link:definitionLink 1085 - Disclosure - Income Taxes - Effective Income Tax Rate Varied from Statutory Guernsey Tax Rate (Parenthetical) (Detail) link:calculationLink link:presentationLink link:definitionLink 1086 - Disclosure - Income Taxes - Aggregate Changes in Balance of Company's Gross Unrecognized Tax Benefits (Detail) link:calculationLink link:presentationLink link:definitionLink 1087 - Disclosure - Income Taxes - Aggregate Changes in Balance of Company's Gross Unrecognized Tax Benefits (Parenthetical) (Detail) link:calculationLink link:presentationLink link:definitionLink 1088 - Disclosure - Repurchase of Shares - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 1089 - Disclosure - Financing Arrangements - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 1090 - Disclosure - Accrued Expenses and Other Current Liabilities - Schedule of Accrued Expenses and Other Current Liabilities (Detail) link:calculationLink link:presentationLink link:definitionLink 1091 - Disclosure - Interest and Other Expense, Net - Interest and Other Expense, Net (Detail) link:calculationLink link:presentationLink link:definitionLink 1092 - Disclosure - Contingencies and Commitments - Future Minimum Non-Cancelable Lease Payments (Detail) link:calculationLink link:presentationLink link:definitionLink 1093 - Disclosure - Contingencies and Commitments - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 1094 - Disclosure - Employee Benefits - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 1095 - Disclosure - Stock Option and Incentive Plan - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 1096 - Disclosure - Stock Option and Incentive Plan - 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Disclosure - Earnings Per Share - Computation of Basic and Diluted Earnings Per Share (Detail) link:calculationLink link:presentationLink link:definitionLink 1104 - Disclosure - Earnings Per Share - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 1105 - Disclosure - Segment Information and Sales to Significant Customers - Summary of Revenue by Geographic Area (Detail) link:calculationLink link:presentationLink link:definitionLink 1106 - Disclosure - Segment Information and Sales to Significant Customers - Summary of Long-lived Assets by Geographic Area (Detail) link:calculationLink link:presentationLink link:definitionLink 1107 - Disclosure - Segment Information and Sales to Significant Customers - Summary of Revenue by Nature of Activities (Detail) link:calculationLink link:presentationLink link:definitionLink 1108 - Disclosure - Segment Information and Sales to Significant Customers - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 1109 - Disclosure - Selected Quarterly Results of Operations - Quarterly Results of Operations (Detail) link:calculationLink link:presentationLink link:definitionLink 1110 - Disclosure - Schedule - Valuation and Qualifying Accounts (Detail) link:calculationLink link:presentationLink link:definitionLink 1111 - Disclosure - Schedule - Valuation and Qualifying Accounts (Parenthetical) (Detail) link:calculationLink link:presentationLink link:definitionLink