Description of Business and Basis of Consolidation and Presentation	3 Months Ended
	Mar. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Description of Business and Basis of Consolidation and Presentation	Description of Business and Basis of Consolidation and Presentation Activision Blizzard, Inc. is a leading global developer and publisher of interactive entertainment content and services. We develop and distribute content and services on video game consoles, personal computers (“PC”s), and mobile devices. We also operate esports leagues and offer digital advertising within some of our content. The terms “Activision Blizzard,” the “Company,” “we,” “us,” and “our” are used to refer collectively to Activision Blizzard, Inc. and its subsidiaries. Our Segments Based upon our organizational structure, we conduct our business through three reportable segments, each of which is a leading global developer and publisher of interactive entertainment content and services based primarily on our internally developed intellectual properties. (i) Activision Publishing, Inc. Activision Publishing, Inc. (“Activision”) delivers content through both premium and free-to-play offerings and primarily generates revenue from full-game and in-game sales, as well as by licensing software to third-party or related-party companies that distribute Activision products. Activision’s key product franchise is Call of Duty®, a first-person action franchise. Activision also includes the activities of the Call of Duty League™, a global professional esports league with city-based teams. (ii) Blizzard Entertainment, Inc. Blizzard Entertainment, Inc. (“Blizzard”) delivers content through both premium and free-to-play offerings and primarily generates revenue from full-game and in-game sales, subscriptions, and by licensing software to third-party or related-party companies that distribute Blizzard products. Blizzard also maintains a proprietary online gaming service, Blizzard Battle.net®, which facilitates digital distribution of Blizzard content and selected Activision content, online social connectivity, and the creation of user-generated content. Blizzard’s key product franchises include: World of Warcraft®, a subscription-based massive multi-player online role-playing franchise; Hearthstone®, an online collectible card franchise based in the Warcraft universe; Diablo®, an action role-playing franchise; and Overwatch®, a team-based first-person action franchise. Blizzard also includes the activities of the Overwatch League™, a global professional esports league with city-based teams. (iii) King Digital Entertainment King Digital Entertainment (“King”) delivers content primarily through free-to-play offerings and primarily generates revenue from in-game sales and in-game advertising on the mobile platform. King’s key product franchise is Candy Crush™, a “match three” franchise. Other We also engage in other businesses that do not represent reportable segments, including the Activision Blizzard Distribution (“Distribution”) business, which consists of operations in Europe that provide warehousing, logistics, and sales distribution services to third-party publishers of interactive entertainment software, our own publishing operations, and manufacturers of interactive entertainment hardware. Basis of Consolidation and Presentation The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with the rules and regulations of the Securities and Exchange Commission and accounting principles generally accepted in the United States of America (“U.S. GAAP”) for interim reporting. Accordingly, certain notes or other information that are normally required by U.S. GAAP have been condensed or omitted if they substantially duplicate the disclosures contained in our annual audited consolidated financial statements. Additionally, the year-end condensed consolidated balance sheet data was derived from audited financial statements but does not include all disclosures required by U.S. GAAP. Accordingly, the unaudited condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto included in our Annual Report on Form 10-K for the year ended December 31, 2020. The preparation of the condensed consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the condensed consolidated financial statements and accompanying notes. Generally, making these estimates and developing our assumptions requires consideration of forecasted information, which, in context of the COVID-19 pandemic, involves additional uncertainty. While there was no material impact to our estimates in the current period, in future periods, facts and circumstances could change and impact our estimates. Additionally, actual results could differ from these estimates and assumptions. In the opinion of management, all adjustments considered necessary for the fair statement of our financial position and results of operations in accordance with U.S. GAAP (consisting of normal recurring adjustments) have been included in the accompanying unaudited condensed consolidated financial statements. The accompanying condensed consolidated financial statements include the accounts and operations of the Company. All intercompany accounts and transactions have been eliminated. Certain reclassifications have been made to prior-year amounts to conform to the current period presentation.