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Disclosure - BUSINESS COMBINATIONS (Tables) link:calculationLink link:presentationLink link:definitionLink 100390 - Disclosure - GOODWILL (Tables) link:calculationLink link:presentationLink link:definitionLink 100400 - Disclosure - INTANGIBLE ASSETS (Tables) link:calculationLink link:presentationLink link:definitionLink 100410 - Disclosure - DEBT (Tables) link:calculationLink link:presentationLink link:definitionLink 100420 - Disclosure - INCOME TAXES (Tables) link:calculationLink link:presentationLink link:definitionLink 100430 - Disclosure - UNEARNED REVENUE (Tables) link:calculationLink link:presentationLink link:definitionLink 100440 - Disclosure - LEASES (Tables) link:calculationLink link:presentationLink link:definitionLink 100450 - Disclosure - STOCKHOLDERS' EQUITY (Tables) link:calculationLink link:presentationLink link:definitionLink 100460 - Disclosure - ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Tables) link:calculationLink link:presentationLink link:definitionLink 100470 - Disclosure - EMPLOYEE STOCK AND SAVINGS PLANS (Tables) link:calculationLink link:presentationLink link:definitionLink 100480 - Disclosure - SEGMENT INFORMATION AND GEOGRAPHIC DATA (Tables) link:calculationLink link:presentationLink link:definitionLink 100490 - Disclosure - QUARTERLY INFORMATION (UNAUDITED) (Tables) link:calculationLink link:presentationLink link:definitionLink 100500 - Disclosure - Accounting Policies - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 100510 - Disclosure - Allowance for Doubtful Accounts (Detail) link:calculationLink link:presentationLink link:definitionLink 100520 - Disclosure - Impact of Tax Cuts and Jobs Act on Previously Reported Balances of Prior Period Income Tax Liabilities (Detail) link:calculationLink link:presentationLink link:definitionLink 100530 - Disclosure - Impacts of Adoption of Standards Related to Revenue Recognition and Leases to Previously Reported Results - (Detail) link:calculationLink link:presentationLink link:definitionLink 100540 - Disclosure - Basic and Diluted Earnings Per Share (Detail) link:calculationLink link:presentationLink link:definitionLink 100550 - Disclosure - Components of Other Income (Expense), Net (Detail) link:calculationLink link:presentationLink link:definitionLink 100560 - Disclosure - Net Recognized Gains (Losses) on Investments (Detail) link:calculationLink link:presentationLink link:definitionLink 100570 - Disclosure - Investment Components, Including Associated Derivatives (Detail) link:calculationLink link:presentationLink link:definitionLink 100580 - Disclosure - Investments - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 100590 - Disclosure - Unrealized Losses on Investments (Detail) link:calculationLink link:presentationLink link:definitionLink 100600 - Disclosure - Debt Investment Maturities (Detail) link:calculationLink link:presentationLink link:definitionLink 100610 - Disclosure - Derivatives - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 100620 - Disclosure - Fair Values of Derivative Instruments (Detail) link:calculationLink link:presentationLink link:definitionLink 100630 - Disclosure - Gains (Losses) on Fair Value Hedges and Related Hedged Items (Detail) link:calculationLink link:presentationLink link:definitionLink 100640 - Disclosure - Gains (Losses) Related to Cash Flow Hedges (Detail) link:calculationLink link:presentationLink link:definitionLink 100650 - Disclosure - Gains (Losses) Related to Cash Flow Hedges (Parenthetical) (Detail) link:calculationLink link:presentationLink link:definitionLink 100660 - Disclosure - Non-designated Derivative Gains (Losses) (Detail) link:calculationLink link:presentationLink link:definitionLink 100670 - Disclosure - Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) link:calculationLink link:presentationLink link:definitionLink 100680 - Disclosure - Reconciliation of Total Assets Measured at Fair Value on Recurring Basis to Balance Sheet Presentation (Detail) link:calculationLink link:presentationLink link:definitionLink 100690 - Disclosure - Components of Inventories (Detail) link:calculationLink link:presentationLink link:definitionLink 100700 - Disclosure - Components of Property and Equipment (Detail) link:calculationLink link:presentationLink link:definitionLink 100710 - Disclosure - Property and Equipment - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 100720 - Disclosure - Business Combinations - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 100730 - Disclosure - Major Classes of Assets and Liabilities to Which We Allocated the Purchase Price (Detail) link:calculationLink link:presentationLink link:definitionLink 100740 - Disclosure - Major Classes of Assets and Liabilities to Which We Allocated the Purchase Price (Parenthetical) (Detail) link:calculationLink link:presentationLink link:definitionLink 100750 - Disclosure - Acquired Intangible Assets (Detail) link:calculationLink link:presentationLink link:definitionLink 100760 - Disclosure - Revenue and Operating Loss Attributable to Acquiree, Since the Date of Acquisition (Detail) link:calculationLink link:presentationLink link:definitionLink 100770 - Disclosure - Supplemental Consolidated Financial Results on Unaudited Pro Forma Basis, as If the Acquisition Had Been Consummated on Beginning of Period (Detail) link:calculationLink link:presentationLink link:definitionLink 100780 - Disclosure - Carrying Amount of Goodwill (Detail) link:calculationLink link:presentationLink link:definitionLink 100790 - Disclosure - Goodwill - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 100800 - Disclosure - Finite-Lived Intangible Assets (Detail) link:calculationLink link:presentationLink link:definitionLink 100810 - Disclosure - Intangible Assets - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 100820 - Disclosure - Intangible Assets Acquired (Detail) link:calculationLink link:presentationLink link:definitionLink 100830 - Disclosure - Estimated Future Amortization Expense Related to Intangible Assets (Detail) link:calculationLink link:presentationLink link:definitionLink 100840 - Disclosure - Debt - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 100850 - Disclosure - Long-term Debt (Detail) link:calculationLink link:presentationLink link:definitionLink 100860 - Disclosure - Maturities of Long-term Debt (Detail) link:calculationLink link:presentationLink link:definitionLink 100870 - Disclosure - Income Taxes - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 100880 - Disclosure - Provision for Income Taxes (Detail) link:calculationLink link:presentationLink link:definitionLink 100890 - Disclosure - Income Before Income Taxes (Detail) link:calculationLink link:presentationLink link:definitionLink 100900 - Disclosure - Difference Between Income Taxes Computed at Federal Statutory Rate and Provision for Income Taxes (Detail) link:calculationLink link:presentationLink link:definitionLink 100910 - Disclosure - Deferred Income Tax Assets and Liabilities (Detail) link:calculationLink link:presentationLink link:definitionLink 100920 - Disclosure - Changes in Unrecognized Tax Benefits (Detail) link:calculationLink link:presentationLink link:definitionLink 100930 - Disclosure - Income Taxes - Additional Information Regarding Examinations (Detail) link:calculationLink link:presentationLink link:definitionLink 100940 - Disclosure - Restructuring Charges - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 100950 - Disclosure - Unearned Revenue by Segment (Detail) link:calculationLink link:presentationLink link:definitionLink 100960 - Disclosure - Unearned Revenue - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 100970 - Disclosure - Changes in Unearned Revenue (Detail) link:calculationLink link:presentationLink link:definitionLink 100980 - Disclosure - Unearned Revenue - Remaining Performance Obligation - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 100990 - Disclosure - Leases - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 101000 - Disclosure - Components of Lease Expense (Detail) link:calculationLink link:presentationLink link:definitionLink 101010 - Disclosure - Supplemental Cash Flow Information Related to Leases (Detail) link:calculationLink link:presentationLink link:definitionLink 101020 - Disclosure - Supplemental Balance Sheet Information Related to Leases (Detail) link:calculationLink link:presentationLink link:definitionLink 101030 - Disclosure - Maturities of lease liabilities (Detail) link:calculationLink link:presentationLink link:definitionLink 101040 - Disclosure - Maturities of lease liabilities (Detail)2 link:calculationLink link:presentationLink link:definitionLink 101050 - Disclosure - Contingencies - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 101060 - Disclosure - Shares of Common Stock Outstanding (Detail) link:calculationLink link:presentationLink link:definitionLink 101070 - Disclosure - Stockholders' Equity - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 101080 - Disclosure - Share Repurchases (Detail) link:calculationLink link:presentationLink link:definitionLink 101090 - Disclosure - Dividends Declared (Detail) link:calculationLink link:presentationLink link:definitionLink 101100 - Disclosure - Summary of Changes in Accumulated Other Comprehensive Income (Loss) by Component (Detail) link:calculationLink link:presentationLink link:definitionLink 101110 - Disclosure - Summary of Changes in Accumulated Other Comprehensive Income (Loss) by Component (Parenthetical) (Detail) link:calculationLink link:presentationLink link:definitionLink 101120 - Disclosure - Employee Stock and Savings Plans - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 101130 - Disclosure - Stock-Based Compensation Expense and Related Income Tax Benefits (Detail) link:calculationLink link:presentationLink link:definitionLink 101140 - Disclosure - Assumptions Used in Estimating the Fair Value of Stock Award Grants (Detail) link:calculationLink link:presentationLink link:definitionLink 101150 - Disclosure - Stock Plan Activity (Detail) link:calculationLink link:presentationLink link:definitionLink 101160 - Disclosure - Stock Plan Activity (Parenthetical) (Detail) link:calculationLink link:presentationLink link:definitionLink 101170 - Disclosure - Employee Purchased Shares (Detail) link:calculationLink link:presentationLink link:definitionLink 101180 - Disclosure - Segment Revenue (Detail) link:calculationLink link:presentationLink link:definitionLink 101190 - Disclosure - Operating Income (Loss) by Segment (Detail) link:calculationLink link:presentationLink link:definitionLink 101200 - Disclosure - Segment Information and Geographic Data - Additional Information (Detail) link:calculationLink link:presentationLink link:definitionLink 101210 - Disclosure - Revenue Classified by Major Geographic Areas (Detail) link:calculationLink link:presentationLink link:definitionLink 101220 - Disclosure - Revenue Classified by Significant Product and Service Offerings (Detail) link:calculationLink link:presentationLink link:definitionLink 101230 - Disclosure - Revenue Classified by Significant Product and Service Offerings (Parenthetical) (Detail) link:calculationLink link:presentationLink link:definitionLink 101240 - Disclosure - Long-Lived Assets, Excluding Financial Instruments and Tax Assets, Classified by Location of Controlling Statutory Company (Detail) link:calculationLink link:presentationLink link:definitionLink 101250 - Disclosure - Quarterly Information (Unaudited) (Detail) link:calculationLink link:presentationLink link:definitionLink 101260 - Disclosure - Quarterly Information (Unaudited) (Parenthetical) (Detail) link:calculationLink link:presentationLink link:definitionLink