2.0.0.10 false Organization and Basis of Presentation 0201 - Disclosure - Organization and Basis of Presentation true false false false 1 usd $ false false USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 USDEPS Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 2 Organization and Basis of Presentation [Abstract] 0 us-gaap_GeneralPoliciesAbstract us-gaap true na duration string No definition available. false false false false false true false false false false false false 1 false false false false 0 0 false false false No definition available. false 3 Organization and Basis of Presentation 1 us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock us-gaap true na duration string No definition available. false false false false false false false false false false false verboselabel false 1 false false false false 0 0    <div style="font-family: 'Times New Roman',Times,serif"> <div align="center" style="font-size: 10pt; margin-top: 0pt"><b> </b> </div> <div align="left" style="font-size: 10pt; margin-top: 12pt"><b>Note 1—Organization and Basis of Presentation</b> </div> <div align="left" style="font-size: 10pt; margin-top: 6pt"><b>Organization</b> </div> <div align="left" style="font-size: 10pt; margin-top: 6pt">NYSE Euronext is a holding company that, through its subsidiaries, operates the following securities exchanges: the New York Stock Exchange (“NYSE”), NYSE Arca, Inc. (“NYSE Arca”) and NYSE Amex LLC (“NYSE Amex”) in the United States and the five European-based exchanges that comprise Euronext N.V. (“Euronext”)—the Paris, Amsterdam, Brussels and Lisbon stock exchanges, as well as the derivatives markets in London, Paris, Amsterdam, Brussels and Lisbon (collectively, “NYSE Liffe”) and the United States futures market, NYSE Liffe US, LLC (“NYSE Liffe US”). NYSE Euronext is a global provider of securities listing, trading, market data products, and software and technology services. NYSE Euronext was formed in connection with the April 4, 2007 combination of NYSE Group (which was formed in connection with the March 7, 2006 merger of the NYSE and Archipelago) and Euronext. NYSE Euronext common stock is dually listed on the NYSE and Euronext Paris under the symbol “NYX.” </div> <div align="left" style="font-size: 10pt; margin-top: 12pt"><b>Basis of Presentation</b> </div> <div align="left" style="font-size: 10pt; margin-top: 6pt">The accompanying condensed unaudited consolidated financial statements include the accounts of NYSE Euronext and its subsidiaries. </div> <div align="left" style="font-size: 10pt; margin-top: 6pt">The accompanying condensed unaudited consolidated financial statements are prepared in accordance with accounting principles generally accepted in the U.S. and reflect all adjustments, consisting of only normal recurring adjustments, that are, in the opinion of management, necessary for a fair statement of the results for the period. All material intercompany accounts and transactions have been eliminated in consolidation. Certain information and footnote disclosures normally required in financial statements under accounting principles generally accepted in the U.S., have been condensed or omitted; however, management believes that the disclosures are adequate to make the information presented not misleading. </div> <div align="left" style="font-size: 10pt; margin-top: 6pt">The preparation of these condensed unaudited consolidated financial statements, in conformity with accounting principles generally accepted in the U.S., requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities as of the date of the financial statements and the reported amounts of revenues and expenses during the period. Actual results could be materially different from these estimates. Certain prior period amounts have been reclassified to conform to the current period’s presentation. </div> <div align="left" style="font-size: 10pt; margin-top: 6pt">We revised our reportable business segments effective in the first quarter of 2010. The new segments are Derivatives, Cash Trading and Listings, and Information Services and Technology Solutions. Historical financial results have been restated to reflect this change. </div> <div align="left" style="font-size: 10pt; margin-top: 6pt">The condensed consolidated financial statements are unaudited and should be read in conjunction with the audited financial statements of NYSE Euronext as of and for the year ended December 31, 2009. Operating results for the three months ended March 31, 2010 are not necessarily indicative of the results that may be expected for the year ending December 31, 2010. </div> </div>  <!-- Begin Block Tagged Note false false false Description containing the entire organization, consolidation and basis of presentation of financial statements disclosure. 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. 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