Earnings Per Share [Abstract] Numerator: Net Income (Loss) Available to Common Stockholders, Basic [Abstract] Consolidated net income Net Income (Loss) Attributable to Parent Denominator: Earnings Per Share, Diluted, Other Disclosures [Abstract] Denominator for basic earnings per common share - weighted-average common shares outstanding (in shares) Weighted Average Number of Shares Outstanding, Basic Employee stock options and awards (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements Denominator for diluted earnings per common share - weighted-average common shares outstanding plus dilutive common shares under treasury stock method (in shares) Weighted Average Number of Shares Outstanding, Diluted Basic earnings (loss) per common share (in dollars per share) Earnings Per Share, Basic Diluted earnings (loss) per common share (in dollars per share) Earnings Per Share, Diluted Performance shares not included in dilutive shares (performance measures not yet met) Contingently Issuable Shares Performance Criteria Contingently issuable shares that were not included in diluted earnings per share (EPS) as the contingencies were not resolved. These shares may be issued in the future upon the satisfaction of specified performance measures. 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] Options Equity Option [Member] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive securities excluded from computation of diluted earnings per share (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Intangible Assets, Net (Excluding Goodwill) [Abstract] Schedule of Finite Lived and Indefinite Lived Intangible Assets by Major Class [Table] Schedule of Finite Lived and Indefinite Lived Intangible Assets by Major Class [Table] Disclosure of the details of intangible assets subject to amortization and not subject to amortization, excluding goodwill, in total and by major class. A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of the company. Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Internally-developed franchises Internally Developed Franchises [Member] The cost of development of franchises by the entity. Developed software DevelopedSoftware [Member] Developed Software acquired. Customer base Customer-Related Intangible Assets [Member] Trade names Trade Names [Member] Other Other Intangible Assets [Member] Indefinite-lived Intangible Assets [Axis] Indefinite-lived Intangible Assets [Axis] Indefinite-lived Intangible Assets, Major Class Name [Domain] Indefinite-lived Intangible Assets, Major Class Name [Domain] Activision trademark Trademarks [Member] Acquired trade names Range [Axis] Range [Axis] Range [Domain] Range [Domain] Minimum Minimum [Member] Maximum Maximum [Member] Definite-lived And Indefinite-lived Intangible Assets [Line Items] Definite-lived And Indefinite-lived Intangible Assets [Line Items] Line items related to definite-lived and indefinite-lived intangible assets. Finite-Lived Intangible Assets Finite-Lived Intangible Assets, Net [Abstract] Estimated useful life Finite-Lived Intangible Asset, Useful Life Gross carrying amount, definite-lived intangible assets Finite-Lived Intangible Assets, Gross Accumulated amortization, definite-lived intangible assets Finite-Lived Intangible Assets, Accumulated Amortization Net carrying amount, definite-lived intangible assets Finite-Lived Intangible Assets, Net Indefinite Lived Intangible Assets Indefinite-Lived Intangible Assets (Excluding Goodwill) [Abstract] Net carrying amount, indefinite-lived intangible assets Indefinite-Lived Intangible Assets (Excluding Goodwill) Total intangible assets, net Intangible Assets, Net (Excluding Goodwill) Amortization Expense Disclosure Amortization of Deferred Charges [Abstract] Amortization expense Amortization of Intangible Assets Statement of Cash Flows [Abstract] Cash flows from operating activities: Net Cash Provided by (Used in) Operating Activities, Continuing Operations [Abstract] Net income Adjustments to reconcile net income to net cash provided by operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Deferred income taxes Deferred Income Tax Expense (Benefit) Depreciation and amortization Depreciation, Depletion and Amortization, Nonproduction Amortization of capitalized software development costs and intellectual property licenses Amortization of capitalized software development costs and intellectual property licenses Amortization of capitalized software development costs and intellectual property licenses. This excludes deferral and amortization of share-based compensation expense. Amortization of debt discount, financing costs, and non-cash write-off due to extinguishment of debts Amortization Of Financing Costs, Discounts, And Write-Off Of Deferred Costs Amount of noncash expense included in interest expense to allocate debt discount and premium, and the costs to issue debt and obtain financing over the related debt instruments. This also includes noncash write-off of discount and deferred costs associated with debt extinguishment. Alternate captions include noncash interest expense. Share-based compensation expense Share-based Compensation Other Other Operating Activities, Cash Flow Statement Changes in operating assets and liabilities: Increase (Decrease) in Operating Assets [Abstract] Accounts receivable, net Increase (Decrease) in Accounts Receivable Inventories Increase (Decrease) in Inventories Software development and intellectual property licenses Increase (Decrease) in Software Development and Intellectual Property Licenses The increase (decrease) in software development and intellectual property licenses. Other assets Increase (Decrease) in Other Operating Assets Deferred revenues Increase (Decrease) in Deferred Revenue Accounts payable Increase (Decrease) in Accounts Payable Accrued expenses and other liabilities Increase (Decrease) in Accrued Liabilities Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities Cash flows from investing activities: Net Cash Provided by (Used in) Investing Activities, Continuing Operations [Abstract] Purchases of available-for-sale investments Payments to Acquire Available-for-sale Securities Capital expenditures Payments to Acquire Property, Plant, and Equipment Other investing activities Payments for (Proceeds from) Other Investing Activities Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities Cash flows from financing activities: Net Cash Provided by (Used in) Financing Activities, Continuing Operations [Abstract] Proceeds from issuance of common stock to employees Proceeds from Stock Plans Tax payment related to net share settlements on restricted stock units Payments Related to Tax Withholding for Share-based Compensation Dividends paid Payments of Ordinary Dividends, Common Stock Proceeds from debt issuances, net of discounts Proceeds from Issuance of Long-term Debt Repayment of long-term debt Repayments of Long-term Debt Other financing activities Proceeds from (Payments for) Other Financing Activities Net cash used in financing activities Net Cash Provided by (Used in) Financing Activities Effect of foreign exchange rate changes on cash and cash equivalents Effect of Exchange Rate on Cash and Cash Equivalents, Continuing Operations 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 at beginning of period Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Cash and cash equivalents and restricted cash at end of period Revenue Recognition and Deferred Revenue [Abstract] Deferred Revenues Revenue from Contract with Customer [Text Block] Income Statement [Abstract] Net revenues Revenue, Net [Abstract] Product sales Sales Revenue, Goods, Net Subscription, licensing, and other revenues Subscription, Licensing and Other Revenues Revenues associated with the sale of subscriptions via packaged software and prepaid subscription cards, royalties from third-party licensee sales of our products, sales of add-on content, micro-transactions, and other ancillary revenues. Total net revenues (Note 2) Revenues Costs and expenses Costs and Expenses [Abstract] Cost of revenues—product sales: Cost of Revenue [Abstract] Product costs Cost of Revenues, Product Sales, Product Costs Product costs which includes the manufacturing cost of goods produced and sold during the reporting period. This generally includes product costs, manufacturing royalties, net of volume discounts, personnel-related costs, warehousing and distribution costs. We generally recognize volume discounts when they are earned (typically in connection with the achievement of unit-based milestones). Software royalties, amortization, and intellectual property licenses Cost of Revenues, Product Sales, SW Royalties, Amortization, and IP Licenses Software royalties, amortization, and intellectual property licenses which includes the amortization of capitalized software costs and royalties attributable to product sales revenues. These are costs capitalized on the balance sheet until the respective games are released, at which time the capitalized costs are amortized. Also included is amortization of intangible assets recognized in purchase accounting attributable to product sales revenues. Cost of revenues—subscription, licensing, and other revenues: Cost of Revenues [Abstract] Cost of Revenues [Abstract] Game operations and distribution costs Cost of Revenues, Subscription, Licensing, and Other, Game Operations and Distribution Costs Game operations and distribution costs which includes costs to operate our games, such as customer service, internet bandwidth and server costs, platform provider fee, and payment provider fees. Software royalties, amortization, and intellectual property licenses Cost of Revenues, Subscription, Licensing, and Other, SW Royalties, Amortization, and IP Licenses Software royalties, amortization, and intellectual property licenses costs which includes the amortization of capitalized software costs and royalties attributable to subscription, licensing and other revenues. These are costs capitalized on the balance sheet until the respective games are released, at which time the capitalized costs are amortized. Also included is amortization of intangible assets recognized in purchase accounting attributable to subscription, licensing and other revenues. Product development Research and Development Expense Sales and marketing Selling and Marketing Expense General and administrative General and Administrative Expense Total costs and expenses Costs and Expenses Operating income Operating Income (Loss) Interest and other expense (income), net Other Nonoperating Income (Expense) Income before income tax expense Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest Income tax expense Income Tax Expense (Benefit) Net income Earnings per common share Basic (in dollars per share) Diluted (in dollars per share) Weighted-average number of shares outstanding Weighted Average Number of Shares Outstanding, Diluted [Abstract] Basic (in shares) Diluted (in shares) Dividends per common share (in dollars per share) Common Stock, Dividends, Per Share, Declared Fair Value Disclosures [Abstract] Fair Value Measurements Fair Value Disclosures [Text Block] Statement of Financial Position [Abstract] Assets Assets [Abstract] Current assets: Assets, Current [Abstract] Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Accounts receivable, net of allowances of $129 and $279, at June 30, 2018 and December 31, 2017, respectively Accounts Receivable, Net, Current Inventories, net Inventory, Net Software development Software Development, Current The current portion of unamortized costs incurred for development of computer software, which is to be sold, leased or otherwise marketed, after establishing technological feasibility, through to the general release of the software products. Other current assets Other Assets, Current Total current assets Assets, Current Software development Software Development, Noncurrent The noncurrent portion of unamortized costs incurred for development of computer software, which is to be sold, leased or otherwise marketed, after establishing technological feasibility, through to the general release of the software products. Property and equipment, net Property, Plant and Equipment, Net Deferred income taxes, net Deferred Income Tax Assets, Net Other assets Other Assets, Noncurrent Intangible assets, net Goodwill Goodwill Total assets Assets Liabilities and Shareholders’ Equity Liabilities and Equity [Abstract] Current liabilities: Liabilities, Current [Abstract] Accounts payable Accounts Payable, Current Deferred revenues Deferred Revenue, Current Accrued expenses and other liabilities Accrued Liabilities, Current Total current liabilities Liabilities, Current Long-term debt, net Long-term Debt, Excluding Current Maturities Deferred income taxes, net Deferred Income Tax Liabilities, Net Other liabilities Other Liabilities, Noncurrent Total liabilities Liabilities Commitments and contingencies Commitments and Contingencies Shareholders’ equity: Stockholders' Equity Attributable to Parent [Abstract] Common stock, $0.000001 par value, 2,400,000,000 shares authorized, 1,190,842,323 and 1,186,181,666 shares issued at June 30, 2018 and December 31, 2017, respectively Common Stock, Value, Issued Additional paid-in capital Additional Paid in Capital, Common Stock Less: Treasury stock, at cost, 428,676,471 shares at June 30, 2018 and December 31, 2017 Treasury Stock, Value Retained earnings Retained Earnings (Accumulated Deficit) Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Total shareholders’ equity Stockholders' Equity Attributable to Parent Total liabilities and shareholders’ equity Liabilities and Equity Organization, Consolidation and Presentation of Financial Statements [Abstract] Description of Business and Basis of Consolidation and Presentation Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Fair value, assets measured on a recurring and/or non-recurring basis Fair Value, Assets Measured on Recurring and Nonrecurring Basis [Table Text Block] Foreign currency forward contracts Schedule of Derivative Instruments [Table Text Block] Net realized gains (losses) reclassified out of accumulated other comprehensive income (loss) Reclassification out of Accumulated Other Comprehensive Income [Table Text Block] Accounts receivable allowances Accounts Receivable Allowance A provision for trade and other receivables due to an Entity within one year (or the normal operating cycle, whichever is longer) that are expected to be uncollectible, an estimate for product returns, and an estimate for price protection. Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Common stock, shares authorized (in shares) Common Stock, Shares Authorized Common stock, shares issued (in shares) Common Stock, Shares, Issued Treasury stock, shares (in shares) Treasury Stock, Shares Software Development Costs and Intellectual Property Licenses Software Development and Intellectual Property Licenses Software Development Costs and Intellectual Property Licenses [Text block] Includes disclosure of software development costs and intellectual property license costs. This element may be used as a single block of text to encapsulate the entire disclosure including data and tables. Inventory Disclosure [Abstract] Inventories, Net Inventory Disclosure [Text Block] Income Tax Disclosure [Abstract] Income Taxes Income Tax Disclosure [Text Block] Segment Reporting [Abstract] Segment Reporting [Abstract] Number of reportable segments Number of Reportable Segments Supplemental Cash Flow Elements [Abstract] Supplemental Cash Flow Elements [Abstract] Restricted cash Restricted Cash Accounting Policies [Abstract] Schedule of Product Information [Table] Schedule of Product Information [Table] Product Information [Line Items] Product Information [Line Items] Payment terms (in days) Requirement of Payment, Term Requirement of Payment, Term Estimated service period (less than) Estimated Service Period This element represents the service period over which revenues are recognized for games for which we have an online hosted software arrangement, or an implied obligation to display virtual goods, or there is significant online functionality that is a separate performance obligation. Intangible Assets, Net Intangible Assets Disclosure [Text Block] Schedule of operating segments and reconciliations of total net revenues and total segment operating income to consolidated net revenues from external customers and consolidated income before income tax expense Schedule of Segment Reporting Information, by Segment [Table Text Block] Schedule of net revenues by distribution channels Schedule of Net Revenues by Distribution Channels [Table Text Block] Schedule of Net Revenues by Distribution Channels [Table Text Block] Schedule of net revenues by geographic region Revenue from External Customers by Geographic Areas [Table Text Block] Schedule of net revenues by platform Schedule of Net Revenues from External Customers by Platform [Table Text Block] The disclosure of net revenues from external customers by platform. Long-lived assets by geographic region Schedule of Disclosure on Geographic Areas, Long-Lived Assets in Individual Foreign Countries by Country [Table Text Block] Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] Finished goods Inventory, Finished Goods, Net of Reserves Purchased parts and components Inventory, Raw Materials, Net of Reserves Inventories, net Inventory reserves Inventory Valuation Reserves Debt Disclosure [Abstract] Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Line of Credit Line of Credit [Member] Unsecured Debt Unsecured Debt [Member] Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] 2017 TLA 2017 Tranche A Term Loan [Member] Sixth Amendment Tranche A Term Loan [Member] 2021 Notes Unsecured 2021 Notes [Member] 2.3% Unsecured Notes. 2022 Notes Unsecured 2022 Notes [Member] 2.6% Unsecured Notes. 2023 Notes Unsecured 2023 Notes [Member] 6.125% Unsecured Notes. 2026 Notes Unsecured 2026 Notes [Member] 3.4% Unsecured Notes. 2027 Notes Unsecured 2027 Notes [Member] 3.4% Unsecured Notes. 2047 Notes Unsecured 2047 Notes [Member] 4.5% Unsecured Notes. Debt Instrument [Line Items] Debt Instrument [Line Items] Gross Carrying Amount Long-term Debt, Gross Unamortized Discount and Deferred Financing Costs Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net Net Carrying Amount Long-term Debt Statement of Comprehensive Income [Abstract] Other comprehensive income (loss): Other Comprehensive Income (Loss), Net of Tax [Abstract] Foreign currency translation adjustment Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Unrealized gains (losses) on forward contracts designated as hedges, net of tax Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax Unrealized gains on investments, net of tax Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax Realized gain on investments, net of tax Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax Total other comprehensive income (loss) Other Comprehensive Income (Loss), Net of Tax Comprehensive income Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Goodwill and Intangible Assets Disclosure [Abstract] Schedule of Goodwill Schedule of Goodwill [Table Text Block] Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Consolidation Items [Axis] Consolidation Items [Axis] Consolidation Items [Domain] Consolidation Items [Domain] Reportable segments Operating Segments [Member] Non-reportable segments Corporate, Non-Segment [Member] Elimination of intersegment revenues Intersegment Eliminations [Member] Reconciling items Segment Reconciling Items [Member] Segments [Axis] Segments [Axis] Segments [Domain] Segments [Domain] Activision Activision [Member] The Activision reportable segment of the entity. Blizzard Blizzard [Member] The Blizzard reportable segment of the entity. King King Digital Entertainment [Member] King Digital Entertainment [Member] Other segments Corporate and Other [Member] Geographical [Axis] Geographical [Axis] Geographical [Domain] Geographical [Domain] Americas Americas [Member] US UNITED STATES EMEA EMEA [Member] UK UNITED KINGDOM Asia Pacific Asia Pacific [Member] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Revenues Sales Revenue, Net [Member] Concentration Risk Type [Axis] Concentration Risk Type [Axis] Concentration Risk Type [Domain] Concentration Risk Type [Domain] Geographic Concentration Risk Geographic Concentration Risk [Member] Products and Services [Axis] Products and Services [Axis] Products and Services [Domain] Products and Services [Domain] Net revenues from external customers Revenue, External Customers [Member] Revenue, External Customers [Member] Intersegment net revenues Revenue, Intersegment [Member] Revenue, Intersegment [Member] Digital online channels Digital Online Channels [Member] Digital Online Channels [Member] Retail channels Retail Channels [Member] Retail Channels [Member] Other Other Distribution Channels [Member] Other Distribution Channels [Member] Console Console [Member] Represents the total of consoles which includes the Sony PS4 and PS3, the Microsoft Xbox One and Xbox 360, and the Nintendo Wii U and Wii. PC PC [Member] The personal computer platform. Mobile and ancillary Mobile And Ancillary Platforms [Member] Mobile And Ancillary Platforms [Member] Other Other [Member] Revenues from handheld and mobile devices, as well as non-platform specific game related revenues such as standalone sales of toys and accessories products from the Skylanders franchise and other physical merchandise and accessories. Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Net revenues Net effect from recognition (deferral) of deferred net revenues Deferral of Net Revenues and Related Cost of Sales Revenue Impact Impact of the net effect from the deferral of net revenues in reconciling total segment net revenues to consolidated net revenues. Net effect from recognition (deferral) of deferred net revenues and related cost of revenues Deferral of Net Revenues and Related Cost of Sales Operating Income Impact Impact of the net effect from the deferral of net revenues and related cost of revenues in reconciling total segment operating income (loss) to consolidated operating income (loss). Segment revenues Segment Revenues Segment revenues represent revenues presented consistent with how our CODM reviews segment performance, which are exclusive of the impact of the change in deferred revenues and related cost of revenues with respect to certain of our online-enabled games. Operating income Share-based compensation expense Allocated Share-based Compensation Expense Amortization of intangible assets Fees and other expenses related to the acquisition of King Fees And Other Expenses Related To Acquisitions Impact of fees and other expenses related to acquisitions, associated integration costs, and related debt financings. Restructuring costs Restructuring Charges Other non-cash charges Other General Expense Revenues as a percentage of consolidated net revenues Concentration Risk, Percentage Long-lived assets Equity [Abstract] Share Repurchase Program [Table] Share Repurchase Program [Table] Summarization of share repurchase programs. Share Repurchase Program [Axis] Share Repurchase Program [Axis] Share Repurchase Program [Domain] Share Repurchase Program [Domain] Share Repurchase Program 2017 Share Repurchase Program 2017 [Member] The 2017 Share Repurchase Program authorized by our Board of Directors. Share Repurchase Program [Line Items] Share Repurchase Program [Line Items] Line items related to the share repurchase program authorized by the Board of Directors. Share repurchase program, dollar amount authorized Stock Repurchase Program, Authorized Amount Shares of common stock repurchased Treasury Stock, Shares, Acquired Cost of common stock repurchased under the stock repurchase program Treasury Stock, Value, Acquired, Cost Method Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] Accumulated Other Comprehensive Income (Loss) Comprehensive Income (Loss) Note [Text Block] Income Taxes [Table] Income Taxes [Table] Summarization of various income tax disclosures. Litigation Case [Axis] Litigation Case [Axis] Litigation Case [Domain] Litigation Case [Domain] Settlement from IRS Closing Agreement Settlement From Closing Agreement [Member] Settlement from IRS Closing Agreement. Other Indirect Tax Benefits Due to IRS Closing Agreement Indirect Tax Benefits Due to Closing Agreement [Member] Other indirect tax benefits due to Closing Agreement. Income Tax Authority [Axis] Income Tax Authority [Axis] Income Tax Authority [Domain] Income Tax Authority [Domain] French Tax Authority Ministry of the Economy, Finance and Industry, France [Member] Business Acquisition [Axis] Business Acquisition [Axis] Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] Acquisition of King Scenario [Axis] Scenario [Axis] Scenario, Unspecified [Domain] Scenario, Unspecified [Domain] Scenario, Forecast Scenario, Forecast [Member] Income Tax [Line Items] Income Tax [Line Items] Line items for various income tax disclosures. Tax expense (benefit) related to tax settlement Tax Adjustments, Settlements, and Unusual Provisions Reduction in unrecognized tax benefits resulting from Closing Agreement Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities Additional federal and state cash payments related to Closing Agreement Income Taxes Paid, Tax Settlement Amount of taxes expected to be paid in a future period as a result of a tax settlement. Valuation allowance Deferred Tax Assets, Valuation Allowance Additional tax expense related to Transition Tax Tax Cuts and Jobs Act of 2017, Measurement Period Adjustment, Income Tax Expense (Benefit) Income Tax Expense (Benefit) recorded during the period related to a measurement period adjustment on the provisional amounts recorded under the Tax Cuts and Jobs Act of 2017. Effective tax rate (in percent) Effective Income Tax Rate Reconciliation, Percent Statutory income tax rate (in percent) Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Uncertain tax positions assumed Unrecognized Tax Benefits, Increase Resulting from Acquisition Total assessment, including penalties and interest, not recorded Income Tax Examination, Total Assessment, Penalties And Interest Amount of tax assessment, including interest and penalties, from tax authority. New Accounting Pronouncements and Changes in Accounting Principles [Abstract] New Accounting Pronouncements or Change in Accounting Principle [Table] New Accounting Pronouncements or Change in Accounting Principle [Table] 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] Initial Application Period Cumulative Effect Transition [Axis] Initial Application Period Cumulative Effect Transition [Axis] Initial Application Period Cumulative Effect Transition [Domain] Initial Application Period Cumulative Effect Transition [Domain] Calculated under Revenue Guidance in Effect before Topic 606 Calculated under Revenue Guidance in Effect before Topic 606 [Member] Difference between Revenue Guidance in Effect before and after Topic 606 Difference between Revenue Guidance in Effect before and after Topic 606 [Member] New Accounting Pronouncements or Change in Accounting Principle [Line Items] New Accounting Pronouncements or Change in Accounting Principle [Line Items] Condensed Consolidated Statement of Operations: Income Statement Related Disclosures [Abstract] Condensed Consolidated Balance Sheet: Balance Sheet Related Disclosures [Abstract] Accounts receivable, net Shareholders' equity Capital Transactions Treasury Stock [Text Block] Computation of Basic/Diluted Earnings Per Common Share Earnings Per Share [Text Block] Line of Credit Facility [Table] Line of Credit Facility [Table] Credit Facility [Axis] Credit Facility [Axis] Credit Facility [Domain] Credit Facility [Domain] Revolver Revolving Credit Facility [Member] Line of Credit Facility [Line Items] Line of Credit Facility [Line Items] Maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Long-term line of credit Long-term Line of Credit Interest rate on credit facility (as a percent) Line of Credit Facility, Interest Rate at Period End Schedule of computation of earnings per share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Total Unsecured Senior Notes Notes [Member] Total Outstanding Unsecured Senior Notes. Fair Value, Hierarchy [Axis] Fair Value, Hierarchy [Axis] Fair Value Hierarchy [Domain] Fair Value Hierarchy [Domain] Significant Other Observable Inputs (Level 2) Fair Value, Inputs, Level 2 [Member] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Subsequent Event Subsequent Event [Member] Interest rate Debt Instrument, Interest Rate, Stated Percentage Interest payable Interest Payable Redemption percentage of aggregate principal amount plus a make-whole premium Debt Instrument, Redemption Price Plus Make-Whole Premium, Percentage The amount the entity would be required to repurchase its unsecured notes at, expressed as a percentage of the principal, plus a make whole premium that would need to be paid in addition to the principal, for if the notes were to be redeemed earlier than the stated periods per the notes indenture. Loss on extinguishment Gain (Loss) on Extinguishment of Debt Premium payment Debt Premium Paid Premium payment component of the loss on debt extinguishment on a debt instrument. Write-off of unamortized discount and financing costs Write Off Of Unamortized Discount (Premium) And Deferred Debt Issuance Costs Write Off Of Unamortized Discount (Premium) And Deferred Debt Issuance Costs as a result of extinguishment. Interest expense Interest Expense, Debt, Excluding Amortization Amortization of financing costs and discounts Amortization of Debt Issuance Costs and Discounts Authorized repayments of debt Extinguishment of Debt, Authorized Amount The amount of authorized repayments of our existing outstanding debt. Fair value of notes Long-term Debt, Fair Value Deferred revenues Contract with Customer, Liability Revenue recognized included in beginning deferred revenue Contract with Customer, Liability, Revenue Recognized Contracted not recognized revenue Revenue, Remaining Performance Obligation Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Investment Type [Axis] Investment Type [Axis] Investments [Domain] Investments [Domain] Foreign currency forward contracts Foreign Exchange Forward [Member] Measurement Frequency [Axis] Measurement Frequency [Axis] Fair Value, Measurement Frequency [Domain] Fair Value, Measurement Frequency [Domain] Recurring Fair Value, Measurements, Recurring [Member] Balance Sheet Location [Axis] Balance Sheet Location [Axis] Balance Sheet Location [Domain] Balance Sheet Location [Domain] Accrued expenses and other liabilities Other Current Liabilities [Member] Derivative Instrument [Axis] Derivative Instrument [Axis] Derivative, Name [Domain] Derivative Contract [Domain] Hedging Designation [Axis] Hedging Designation [Axis] Hedging Designation [Domain] Hedging Designation [Domain] Designated as Hedging Instrument Designated as Hedging Instrument [Member] Not Designated as Hedging Instrument Not Designated as Hedging Instrument [Member] Hedging Relationship [Axis] Hedging Relationship [Axis] Hedging Relationship [Domain] Hedging Relationship [Domain] Cash Flow Hedging Cash Flow Hedging [Member] Reclassification out of Accumulated Other Comprehensive Income [Axis] Reclassification out of Accumulated Other Comprehensive Income [Axis] Reclassification out of Accumulated Other Comprehensive Income [Domain] Reclassification out of Accumulated Other Comprehensive Income [Domain] Reclassification out of Accumulated Other Comprehensive Income Reclassification out of Accumulated Other Comprehensive Income [Member] Derivatives, Fair Value [Line Items] Derivatives, Fair Value [Line Items] Notional amount of foreign currency derivatives Derivative, Notional Amount Derivative, Fair Value, Net Derivative, Fair Value, Net Contract maturity (or less) Derivative, Remaining Maturity Deferred cash flow hedge gain (loss) to be reclassified within twelve months Deferred Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months The estimated net amount of existing gains or losses on cash flow hedges that settled and were deferred at the reporting date that are expected to be reclassified to earnings, along with the associated hedged revenues, within the next 12 months. Amounts reclassified from accumulated other comprehensive income (loss) into earnings Document and Entity Information 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 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 Current Reporting Status Entity Current Reporting Status Entity Filer Category Entity Filer Category Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Goodwill Goodwill Disclosure [Text Block] Revenue, Initial Application Period Cumulative Effect Transition [Table] Revenue, Initial Application Period Cumulative Effect Transition [Table] Revenue, Initial Application Period Cumulative Effect Transition [Line Items] Revenue, Initial Application Period Cumulative Effect Transition [Line Items] Summary of debt Schedule of Debt [Table Text Block] Schedule of maturities of debt Schedule of Maturities of Long-term Debt [Table Text Block] Definite-lived intangible assets, future amortization expense disclosure Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract] 2018 (remaining six months) Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year 2019 Finite-Lived Intangible Assets, Amortization Expense, Year Two 2020 Finite-Lived Intangible Assets, Amortization Expense, Year Three 2021 Finite-Lived Intangible Assets, Amortization Expense, Year Four 2022 Finite-Lived Intangible Assets, Amortization Expense, Year Five Thereafter Finite-Lived Intangible Assets, Amortization Expense, after Year Five Schedule of accumulated other comprehensive income (loss) Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Accounting Standards Update 2016-15 Accounting Standards Update 2016-15 [Member] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Retained Earnings Retained Earnings [Member] Pro Forma Pro Forma [Member] New Accounting Pronouncement, Early Adoption [Axis] New Accounting Pronouncement, Early Adoption [Axis] New Accounting Principles, Early Adoption [Domain] New Accounting Principles, Early Adoption [Domain] New Accounting Pronouncement, Early Adoption, Effect New Accounting Pronouncement, Early Adoption, Effect [Member] Cumulative impact from adoption of new revenue accounting standard (Note 3) Cumulative Effect of New Accounting Principle in Period of Adoption Sale price recognized as revenue upon delivery (percent) New Accounting Pronouncement or Change in Accounting Principle, Effect of Change, Percentage Approximate percentage of sales price for certain products expected to be recognized upfront as revenues due to new accounting pronouncement. Movement in restricted cash related to acquisition Increase (Decrease) in Restricted Cash Summary of the components of capitalized software development Schedule of Software Development Costs and Intellectual Property Licenses [Table Text Block] Tabular disclosure of software development costs and intellectual property licenses as of the balance sheet date. Amortization of capitalized software development costs and intellectual property licenses Amortization of Software Development Costs and Intellectual Property Licenses [Table Text Block] Tabular disclosure of amortization of software development costs and intellectual property licenses. Recently Issued Accounting Pronouncements New Accounting Pronouncements and Changes in Accounting Principles [Text Block] Dividends Dividends [Abstract] Cash dividend payment Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Foreign currency translation adjustments Accumulated Foreign Currency Adjustment Attributable to Parent [Member] Unrealized gain (loss) on forward contracts Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member] Unrealized gain (loss) on available-for-sale securities Accumulated Net Investment Gain (Loss) Attributable to Parent [Member] Accumulated Other Comprehensive Income (Loss) AOCI Attributable to Parent [Member] Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss) [Roll Forward] AOCI Attributable to Parent, Net of Tax [Roll Forward] Beginning balance Cumulative impact from adoption of new revenue accounting standard Other comprehensive income (loss) before reclassifications OCI, before Reclassifications, Net of Tax, Attributable to Parent Amounts reclassified from accumulated other comprehensive income (loss) into earnings Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent Ending balance Statement of Stockholders' Equity [Abstract] Maturities of Long-term Debt [Abstract] Maturities of Long-term Debt [Abstract] 2018 (remaining six months) Long-term Debt, Maturities, Repayments of Principal, Remainder of Fiscal Year 2019 Long-term Debt, Maturities, Repayments of Principal in Year Two 2020 Long-term Debt, Maturities, Repayments of Principal in Year Three 2021 Long-term Debt, Maturities, Repayments of Principal in Year Four 2022 Long-term Debt, Maturities, Repayments of Principal in Year Five Thereafter (1) Long-term Debt, Maturities, Repayments of Principal after Year Five Gross Carrying Amount Schedule of finite-lived intangible assets Schedule of Finite-Lived Intangible Assets [Table Text Block] Schedule of indefinite-lived intangible assets Schedule of Indefinite-Lived Intangible Assets [Table Text Block] Schedule of finite lived intangible assets, future amortization expense Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] Schedule of Goodwill [Table] Schedule of Goodwill [Table] Goodwill [Line Items] Goodwill [Line Items] Schedule of Impact of Adoption Schedule of New Accounting Pronouncements and Changes in Accounting Principles [Table Text Block] Operating Segments and Geographic Region Segment Reporting Disclosure [Text Block] Nonrecurring Fair Value, Measurements, Nonrecurring [Member] Fair Value Measurements on a Non-Recurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Asset impairment charges Asset Impairment Charges Fair Value Measurements, Recurring [Table] Fair Value Measurements, Recurring and Nonrecurring [Table] Cash and cash equivalents Cash and Cash Equivalents [Member] Other current assets Other Current Assets [Member] Quoted Prices in Active Markets for Identical Assets (Level 1) Fair Value, Inputs, Level 1 [Member] Significant Unobservable Inputs (Level 3) Fair Value, Inputs, Level 3 [Member] Money market funds Money Market Funds [Member] Foreign government treasury bills Foreign Government Treasury Bills [Member] This element represents foreign government treasury bills measured at fair value on a recurring basis. U.S. treasuries and government agency securities US Government Corporations and Agencies Securities [Member] Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] Total assets at fair value Assets, Fair Value Disclosure, Recurring Total liabilities at fair value Liabilities, Fair Value Disclosure, Recurring Software development and intellectual property licenses: Software Development and Intellectual Property Licenses [Abstract] Internally-developed software costs Internally Developed Software Costs Capitalization of certain internally developed software costs incurred after technological feasibility of the software is established. Payments made to third-party software developers Software Costs Payments, Made to Third Party Developers Capitalized software costs resulting from payments made to third-party software developers. Total software development costs Software Development Costs Unamortized costs incurred for development of computer software, which is to be sold, leased or otherwise marketed, after establishing technological feasibility through to the general release of the software products. Amortization: Amortization [Abstract] Amortization of capitalized software development costs and intellectual property licenses Capitalized Software Development Costs and Intellectual Property Licenses Amortization The amortization of capitalized software development costs and intellectual property licenses. Debt Debt Disclosure [Text Block] Schedule of inventories Schedule of Inventory, Current [Table Text Block] Statement [Table] Statement [Table] Common Stock Common Stock [Member] Treasury Stock Treasury Stock [Member] Additional Paid-In Capital Additional Paid-in Capital [Member] Statement [Line Items] Statement [Line Items] Increase (Decrease) in Stockholders' Equity Increase (Decrease) in Stockholders' Equity [Roll Forward] Balance (in shares) Shares, Issued Components of comprehensive income: Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract] Other comprehensive income (loss) Issuance of common stock pursuant to employee stock options Stock Issued During Period, Value, Share-based Compensation, Gross Issuance of common stock pursuant to employee stock options (in shares) Stock Issued During Period, Shares, Share-based Compensation, Gross Issuance of common stock pursuant to restricted stock units Stock Issued During Period, Value, Restricted Stock Award, Gross Issuance of common stock pursuant to restricted stock units (in shares) Stock Issued During Period, Shares, Restricted Stock Award, Gross Restricted stock surrendered for employees’ tax liability Adjustments Related to Tax Withholding for Share-based Compensation Restricted stock surrendered for employees' tax liability (in shares) Shares Paid for Tax Withholding for Share Based Compensation Share-based compensation expense related to employee stock options and restricted stock units Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition Dividends ($0.34 per common share) Dividends, Common Stock, Cash Balance (in shares) Basis of Consolidation and Presentation Consolidation, Policy [Policy Text Block] Revenue from Contracts with Customers Revenue from Contract with Customer [Policy Text Block] Revenue from Contract with Customer [Policy Text Block] Recently Issued Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block]