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Disclosure - Business and Summary of Significant Accounting Policies link:presentationLink link:calculationLink link:definitionLink 0000011 - Disclosure - Revenue Recognition link:presentationLink link:calculationLink link:definitionLink 0000012 - Disclosure - Financial Instruments link:presentationLink link:calculationLink link:definitionLink 0000013 - Disclosure - Equity Compensation link:presentationLink link:calculationLink link:definitionLink 0000014 - Disclosure - Income Taxes link:presentationLink link:calculationLink link:definitionLink 0000015 - Disclosure - Acquisitions link:presentationLink link:calculationLink link:definitionLink 0000016 - Disclosure - Deferred Compensation link:presentationLink link:calculationLink link:definitionLink 0000017 - Disclosure - Borrowing Arrangements link:presentationLink link:calculationLink link:definitionLink 0000018 - Disclosure - Leases link:presentationLink link:calculationLink link:definitionLink 0000019 - Disclosure - Derivative Instruments link:presentationLink link:calculationLink link:definitionLink 0000020 - 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Derivatives (Details) link:presentationLink link:calculationLink link:definitionLink 9954489 - Disclosure - Business and Summary of Significant Accounting Policies - Accounts Receivable, Net (Details) link:presentationLink link:calculationLink link:definitionLink 9954490 - Disclosure - Business and Summary of Significant Accounting Policies - Concentration of Credit Risk (Details) link:presentationLink link:calculationLink link:definitionLink 9954491 - Disclosure - Business and Summary of Significant Accounting Policies - Intangible Assets and Related Accumulated Amortization (Details) link:presentationLink link:calculationLink link:definitionLink 9954492 - Disclosure - Business and Summary of Significant Accounting Policies - Expected Future Amortization Expense for Purchased Technologies, Customer Relationships and Trade Names (Details) link:presentationLink link:calculationLink link:definitionLink 9954493 - Disclosure - Business and Summary of Significant Accounting Policies - Computer Equipment, Software, Furniture and Leasehold Improvements, Net (Details) link:presentationLink link:calculationLink link:definitionLink 9954494 - Disclosure - Business and Summary of Significant Accounting Policies - Changes In the Carrying Amount of Goodwill (Details) link:presentationLink link:calculationLink link:definitionLink 9954495 - Disclosure - Business and Summary of Significant Accounting Policies - Stock Based Compensation Expense (Details) link:presentationLink link:calculationLink link:definitionLink 9954496 - Disclosure - Business and Summary of Significant Accounting Policies - Assumption Used to Estimate the Fair Value of Stock-Based Awards (Details) link:presentationLink link:calculationLink link:definitionLink 9954497 - Disclosure - Business and Summary of Significant Accounting Policies - Advertising Expense (Details) link:presentationLink link:calculationLink link:definitionLink 9954498 - Disclosure - Revenue Recognition - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9954498 - Disclosure - Revenue Recognition - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9954499 - Disclosure - Revenue Recognition - Contract Revenue (Details) link:presentationLink link:calculationLink link:definitionLink 9954500 - Disclosure - Financial Instruments - Financial Instruments by Significant Investment Category (Details) link:presentationLink link:calculationLink link:definitionLink 9954500 - Disclosure - Financial Instruments - Financial Instruments by Significant Investment Category (Details) link:presentationLink link:calculationLink link:definitionLink 9954501 - Disclosure - Financial Instruments - Schedule of Investments Classified by Contractual Maturity Date (Details) link:presentationLink link:calculationLink link:definitionLink 9954502 - Disclosure - Financial Instruments - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9954503 - Disclosure - Financial Instruments - Schedule of Marketable Securities (Details) link:presentationLink link:calculationLink link:definitionLink 9954504 - Disclosure - Financial Instruments - Non-Marketable Equity Securities (Details) link:presentationLink link:calculationLink link:definitionLink 9954505 - 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Derivative Instruments - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9954526 - Disclosure - Derivative Instruments - Effects of Derivative Instruments on Condensed Consolidated Statements of Operations (Details) link:presentationLink link:calculationLink link:definitionLink 9954527 - Disclosure - Commitments and Contingencies (Details) link:presentationLink link:calculationLink link:definitionLink 9954528 - Disclosure - Stock Repurchase Program (Details) link:presentationLink link:calculationLink link:definitionLink 9954529 - Disclosure - Interest and Other Income (Expense), net (Details) link:presentationLink link:calculationLink link:definitionLink 9954530 - Disclosure - Accumulated Other Comprehensive Loss (Details) link:presentationLink link:calculationLink link:definitionLink 9954531 - Disclosure - Net Income Per Share - Computation of Net Income Per Share Amounts (Details) link:presentationLink link:calculationLink link:definitionLink 9954532 - 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