Overview And Summary Of Significant Accounting Policies	3 Months Ended
Overview And Summary Of Significant Accounting Policies	Mar. 31, 2012
Overview And Summary Of Significant Accounting Policies [Abstract]
Overview And Summary Of Significant Accounting Policies	1. Overview and Summary of Significant Accounting Policies *Organization and Description of Business* Zynga Inc. ("Zynga," "we" or "the Company") develops, markets and operates online social games as live services played over the Internet and on social networking sites and mobile platforms. We generate revenue primarily through the in-game sale of virtual goods. Our operations are headquartered in San Francisco, California, and we have several operating locations in the United States as well as various international office locations in Asia and Europe. We were originally organized in April 2007 as a California limited liability company under the name Presidio Media LLC, converted to a Delaware corporation in October 2007 and changed our name to Zynga Inc. in November 2010. We completed our initial public offering in December 2011 and our Class A common stock is listed on the NASDAQ Global Select Market under the symbol "ZNGA." *Basis of Presentation and Consolidation* The accompanying consolidated financial statements are presented in accordance with United States generally accepted accounting principles ("U.S. GAAP"). The consolidated financial statements include the operations of Zynga and its wholly-owned subsidiaries. All intercompany balances and transactions have been eliminated in consolidation. The consolidated financial statements and related notes should be read in conjunction with the consolidated financial statements and related notes included in our Annual Report on Form 10-K for the year ended December 31, 2011. There have been no significant changes to our accounting policies since our Annual Report that have had a significant impact on our consolidated financial statements and related notes. *Unaudited Interim Financial Information* The accompanying interim consolidated balance sheet as of March 31, 2012, the consolidated statements of operations and comprehensive income (loss) for the three months ended March 31, 2012 and 2011, the consolidated statements of cash flows for the three months ended March 31, 2012 and 2011 and the related footnote disclosures are unaudited. These unaudited interim financial statements have been prepared in accordance with U.S. GAAP. In management's opinion, the unaudited interim financial statements have been prepared on the same basis as the audited financial statements and include all adjustments of a normal recurring nature necessary for the fair presentation of the Company's statement of financial position as of March 31, 2012, the consolidated statements of operations and comprehensive income (loss) for the three months ended March 31, 2012 and 2011 and the consolidated statements of cash flows for the three months ended March 31, 2012 and 2011. The results for the three months ended March 31, 2012 are not necessarily indicative of the results expected for the full fiscal year or any interim period. *Use of Estimates* The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts in the consolidated financial statements and notes thereto. Significant estimates and assumptions reflected in the financial statements include, but are not limited to, the estimated lives of virtual goods that we use for revenue recognition, the chargeback reserve for our third-party payment processors, the allowance for doubtful accounts, useful lives of property and equipment and intangible assets, accrued liabilities, income taxes, accounting for business combinations, stock-based expense and evaluation of goodwill and long-lived assets for impairment. Actual results could differ materially from those estimates. *Recently Adopted Accounting Pronouncements* Presentation of Comprehensive Income In June 2011, the Financial Accounting Standards Board ("FASB") issued an amendment to an existing accounting standard which requires companies to present net income and other comprehensive income in one continuous statement or in two separate but consecutive statements. We adopted this standard effective in the first quarter of 2012. Common Fair Value Measurement and Disclosure Requirements In May 2011, the FASB issued an amendment to provide a consistent definition of fair value and ensure that the fair value measurement and disclosure requirements are similar between U.S. GAAP and International Financial Reporting Standards. The amendment changes certain fair value measurement principles and enhances the disclosure requirements particularly for Level 3 fair value measurements. We adopted this standard effective in the first quarter of 2012 with no material impact on our consolidated financial statements and disclosures. Testing of Goodwill Impairment In September 2011, the FASB issued an amendment to an existing accounting standard which provides entities an option to perform a qualitative assessment to determine whether further impairment testing on goodwill is necessary, thereby only requiring the current two-step test to be completed if management's qualitative assessment indicates a reporting unit's carrying value is in excess of its fair value. We adopted this standard effective in the first quarter of 2012 with no material impact on our consolidated financial statements and disclosures.

The entire disclosure for the organization, consolidation and basis of presentation of financial statements disclosure, and significant accounting policies of the reporting entity. May be provided in more than one note to the financial statements, as long as users are provided with an understanding of (1) the significant judgments and assumptions made by an enterprise in determining whether it must consolidate a VIE and/or disclose information about its involvement with a VIE, (2) the nature of restrictions on a consolidated VIE's assets reported by an enterprise in its statement of financial position, including the carrying amounts of such assets, (3) the nature of, and changes in, the risks associated with an enterprise's involvement with the VIE, and (4) how an enterprise's involvement with the VIE affects the enterprise's financial position, financial performance, and cash flows. Describes procedure if disclosures are provided in more than one note to the financial statements.

+ References+ Details