2.2.0.7 true Goodwill and Other Intangible Assets (Details) (USD $) 0607 - Disclosure - Goodwill and Other Intangible Assets (Details) true false In Millions, unless otherwise specified false false 1 USD false false USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 Pure Standard http://www.xbrl.org/2003/instance pure xbrli 0 USDEPS Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 Shares Standard http://www.xbrl.org/2003/instance shares xbrli 0 $ false 2 USD false false USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 Shares Standard http://www.xbrl.org/2003/instance shares xbrli 0 USDEPS Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 Pure Standard http://www.xbrl.org/2003/instance pure xbrli 0 $ false 3 USD false false USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 Pure Standard http://www.xbrl.org/2003/instance pure xbrli 0 USDEPS Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 Shares Standard http://www.xbrl.org/2003/instance shares xbrli 0 $ false 4 USD false false USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 Shares Standard http://www.xbrl.org/2003/instance shares xbrli 0 USDEPS Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 Pure Standard http://www.xbrl.org/2003/instance pure xbrli 0 $ false 5 USD false false USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 Shares Standard http://www.xbrl.org/2003/instance shares xbrli 0 Pure Standard http://www.xbrl.org/2003/instance pure xbrli 0 $ 2 Change in the net carrying amount of goodwill by reportable segments 2 nyx_ChangeInNetCarryingAmountOfGoodwillByReportableSegmentsAbstract nyx false na duration Change in net carrying amount of goodwill by reportable segments. false false false false false true false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:stringItemType string Change in net carrying amount of goodwill by reportable segments. false 3 Beginning balance 2 us-gaap_SegmentReportingInformationGoodwill us-gaap true debit instant No definition available. false false false false false false false false true false false periodstartlabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 true true false false 4210000000 4210 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary Carrying amount attributed to the reportable segment of goodwill (adjusted for any amortization and impairment charges), which is the cumulative amount paid in excess of the fair value of net assets acquired in one or more business combination transactions. No authoritative reference available. false 4 Purchase accounting adjustments 2 nyx_SegmentReportingInformationGoodwillPurchaseAccountingAdjustments nyx false debit duration Segment Reporting Information Goodwill Purchase Accounting Adjustments. false false false false false false false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false -5000000 -5 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary Segment Reporting Information Goodwill Purchase Accounting Adjustments. No authoritative reference available. false 5 Currency translation and other 2 nyx_SegmentReportingInformationGoodwillCurrencyTranslationAndOther nyx false debit duration Segment reporting information goodwill currency translation and other. false false false false false false false false false false true negatedtotal false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false -342000000 -342 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary Segment reporting information goodwill currency translation and other. No authoritative reference available. true 6 Ending balance 2 us-gaap_SegmentReportingInformationGoodwill us-gaap true debit instant No definition available. false false false false false false false false false true false periodendlabel false 1 false true false false 3863000000 3863 false false false 2 false false false false 0 0 false false false 3 false true false false 3863000000 3863 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary Carrying amount attributed to the reportable segment of goodwill (adjusted for any amortization and impairment charges), which is the cumulative amount paid in excess of the fair value of net assets acquired in one or more business combination transactions. No authoritative reference available. false 7 Summary of the intangible assets 2 us-gaap_IntangibleAssetsNetExcludingGoodwillAbstract us-gaap true na duration No definition available. false false false false false true false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 8 Estimated fair value 2 nyx_IntangibleAssetsExcludingGoodwillGross nyx false debit instant Intangible assets excluding goodwill gross. false false false false false false false false false false false verboselabel false 1 false true false false 5699000000 5699 false false false 2 false false false false 0 0 false false false 3 false true false false 5699000000 5699 false false false 4 false false false false 0 0 false false false 5 false true false false 6336000000 6336 false false false xbrli:monetaryItemType monetary Intangible assets excluding goodwill gross. No authoritative reference available. false 9 Accumulated amortization 2 us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization us-gaap true credit instant No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 167000000 167 false false false 2 false false false false 0 0 false false false 3 false true false false 167000000 167 false false false 4 false false false false 0 0 false false false 5 false true false false 152000000 152 false false false xbrli:monetaryItemType monetary The accumulated amount of amortization of a major finite-lived intangible asset 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 a company. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 45 -Subparagraph a(1) false 12 Summary of future amortization expense of acquired purchased intangible assets 2 us-gaap_FiniteLivedIntangibleAssetsFutureAmortizationExpenseAbstract us-gaap true na duration No definition available. false false false false false true false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 13 Remainder of 2010 (from July 1st through December 31st) 2 nyx_FutureAmortizationExpenseCurrentYearRemainingPeriod nyx false debit duration Future amortization expense current year remaining period. false false false false false false false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 29000000 29 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary Future amortization expense current year remaining period. No authoritative reference available. false 14 2011 2 us-gaap_FutureAmortizationExpenseYearOne us-gaap true debit duration No definition available. false false false false false false false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 58000000 58 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary The amount of amortization expense expected to be recognized during the twelve-month period following the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 45 -Subparagraph a(3) false 15 2012 2 us-gaap_FutureAmortizationExpenseYearTwo us-gaap true debit duration No definition available. false false false false false false false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 58000000 58 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary The amount of amortization expense expected to be recognized during the second twelve-month period following the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 45 -Subparagraph a(3) false 16 2013 2 us-gaap_FutureAmortizationExpenseYearThree us-gaap true debit duration No definition available. false false false false false false false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 58000000 58 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary The amount of amortization expense expected to be recognized during the third twelve-month period following the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 45 -Subparagraph a(3) false 17 2014 2 us-gaap_FutureAmortizationExpenseYearFour us-gaap true debit duration No definition available. false false false false false false false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 58000000 58 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary The amount of amortization expense expected to be recognized during the fourth twelve-month period following the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 45 -Subparagraph a(3) false 18 Thereafter 2 nyx_FutureAmortizationExpenseAfterYearFour nyx false debit duration The amount of amortization expense expected to be recognized after the fourth twelve-month period following the balance sheet... false false false false false false false false false false false totallabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 557000000 557 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary The amount of amortization expense expected to be recognized after the fourth twelve-month period following the balance sheet date. No authoritative reference available. true 19 Total 2 us-gaap_FiniteLivedIntangibleAssetsFutureAmortizationExpense us-gaap true debit duration No definition available. false false false false false false false false false false false totallabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 818000000 818 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary The aggregate estimated amortization expense for each of the five succeeding fiscal years for intangible assets subject to amortization. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 45 -Subparagraph a(3) true 20 Goodwill and Other Intangible Assets (Textuals) 2 nyx_GoodwillAndOtherIntangibleAssetsTextualsAbstract nyx false na duration Goodwill and other intangible assets. false false false false false true false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:stringItemType string Goodwill and other intangible assets. false 21 Amortization of Intangible Assets 2 us-gaap_AmortizationOfIntangibleAssets us-gaap true debit duration No definition available. false false false false false false false false false false false false 1 false true false false 14000000 14 false false false 2 false true false false 14000000 14 false false false 3 false true false false 29000000 29 false false false 4 false true false false 28000000 28 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by (used in) operations using the indirect method. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 45 -Subparagraph a(2) false 22 Derivatives [Member] 0 na true na na No definition available. false true false false false false false false false false false http://nyse.com/role/goodwillandotherintangibleassetsdetails false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false false 6 USD true false false false Derivatives [Member] us-gaap_RestructuringAndRelatedCostByTypeOfRestructuringAxis xbrldi http://xbrl.org/2006/xbrldi nyx_DerivativesMember us-gaap_RestructuringAndRelatedCostByTypeOfRestructuringAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. No authoritative reference available. false 23 Change in the net carrying amount of goodwill by reportable segments 2 nyx_ChangeInNetCarryingAmountOfGoodwillByReportableSegmentsAbstract nyx false na duration Change in net carrying amount of goodwill by reportable segments. false false false false false true false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:stringItemType string Change in net carrying amount of goodwill by reportable segments. false 24 Beginning balance 2 us-gaap_SegmentReportingInformationGoodwill us-gaap true debit instant No definition available. false false false false false false false false true false false periodstartlabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 2249000000 2249 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary Carrying amount attributed to the reportable segment of goodwill (adjusted for any amortization and impairment charges), which is the cumulative amount paid in excess of the fair value of net assets acquired in one or more business combination transactions. No authoritative reference available. false 26 Currency translation and other 2 nyx_SegmentReportingInformationGoodwillCurrencyTranslationAndOther nyx false debit duration Segment reporting information goodwill currency translation and other. false false false false false false false false false false true negatedtotal false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false -113000000 -113 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary Segment reporting information goodwill currency translation and other. No authoritative reference available. true 27 Ending balance 2 us-gaap_SegmentReportingInformationGoodwill us-gaap true debit instant No definition available. false false false false false false false false false true false periodendlabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 2136000000 2136 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary Carrying amount attributed to the reportable segment of goodwill (adjusted for any amortization and impairment charges), which is the cumulative amount paid in excess of the fair value of net assets acquired in one or more business combination transactions. No authoritative reference available. false 43 Cash Trading and Listings [Member] 0 na true na na No definition available. false true false false false false false false false false false http://nyse.com/role/goodwillandotherintangibleassetsdetails false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false false 7 USD true false false false Cash Trading and Listings [Member] us-gaap_RestructuringAndRelatedCostByTypeOfRestructuringAxis xbrldi http://xbrl.org/2006/xbrldi nyx_CashTradingAndListingsMember us-gaap_RestructuringAndRelatedCostByTypeOfRestructuringAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. No authoritative reference available. false 44 Change in the net carrying amount of goodwill by reportable segments 2 nyx_ChangeInNetCarryingAmountOfGoodwillByReportableSegmentsAbstract nyx false na duration Change in net carrying amount of goodwill by reportable segments. false false false false false true false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:stringItemType string Change in net carrying amount of goodwill by reportable segments. false 45 Beginning balance 2 us-gaap_SegmentReportingInformationGoodwill us-gaap true debit instant No definition available. false false false false false false false false true false false periodstartlabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 1553000000 1553 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary Carrying amount attributed to the reportable segment of goodwill (adjusted for any amortization and impairment charges), which is the cumulative amount paid in excess of the fair value of net assets acquired in one or more business combination transactions. No authoritative reference available. false 47 Currency translation and other 2 nyx_SegmentReportingInformationGoodwillCurrencyTranslationAndOther nyx false debit duration Segment reporting information goodwill currency translation and other. false false false false false false false false false false true negatedtotal false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false -202000000 -202 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary Segment reporting information goodwill currency translation and other. No authoritative reference available. true 48 Ending balance 2 us-gaap_SegmentReportingInformationGoodwill us-gaap true debit instant No definition available. false false false false false false false false false true false periodendlabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 1351000000 1351 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary Carrying amount attributed to the reportable segment of goodwill (adjusted for any amortization and impairment charges), which is the cumulative amount paid in excess of the fair value of net assets acquired in one or more business combination transactions. No authoritative reference available. false 64 Information Services and Technology Solutions [Member] 0 na true na na No definition available. false true false false false false false false false false false http://nyse.com/role/goodwillandotherintangibleassetsdetails false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false false 8 USD true false false false Information Services and Technology Solutions [Member] us-gaap_RestructuringAndRelatedCostByTypeOfRestructuringAxis xbrldi http://xbrl.org/2006/xbrldi nyx_InformationServicesAndTechnologySolutionsMember us-gaap_RestructuringAndRelatedCostByTypeOfRestructuringAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. No authoritative reference available. false 65 Change in the net carrying amount of goodwill by reportable segments 2 nyx_ChangeInNetCarryingAmountOfGoodwillByReportableSegmentsAbstract nyx false na duration Change in net carrying amount of goodwill by reportable segments. false false false false false true false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:stringItemType string Change in net carrying amount of goodwill by reportable segments. false 66 Beginning balance 2 us-gaap_SegmentReportingInformationGoodwill us-gaap true debit instant No definition available. false false false false false false false false true false false periodstartlabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 408000000 408 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary Carrying amount attributed to the reportable segment of goodwill (adjusted for any amortization and impairment charges), which is the cumulative amount paid in excess of the fair value of net assets acquired in one or more business combination transactions. No authoritative reference available. false 67 Purchase accounting adjustments 2 nyx_SegmentReportingInformationGoodwillPurchaseAccountingAdjustments nyx false debit duration Segment Reporting Information Goodwill Purchase Accounting Adjustments. false false false false false false false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false -5000000 -5 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary Segment Reporting Information Goodwill Purchase Accounting Adjustments. No authoritative reference available. false 68 Currency translation and other 2 nyx_SegmentReportingInformationGoodwillCurrencyTranslationAndOther nyx false debit duration Segment reporting information goodwill currency translation and other. false false false false false false false false false false true negatedtotal false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false -27000000 -27 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary Segment reporting information goodwill currency translation and other. No authoritative reference available. true 69 Ending balance 2 us-gaap_SegmentReportingInformationGoodwill us-gaap true debit instant No definition available. false false false false false false false false false true false periodendlabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false true false false 376000000 376 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:monetaryItemType monetary Carrying amount attributed to the reportable segment of goodwill (adjusted for any amortization and impairment charges), which is the cumulative amount paid in excess of the fair value of net assets acquired in one or more business combination transactions. No authoritative reference available. false 85 National securities exchange registrations [Member] 0 na true na na No definition available. false true false false false false false false false false false http://nyse.com/role/goodwillandotherintangibleassetsdetails false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false false 9 USD true false false false National securities exchange registrations [Member] us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis xbrldi http://xbrl.org/2006/xbrldi nyx_NationalSecuritiesExchangeRegistrationsMember us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 10 USD true false false false National securities exchange registrations [Member] us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis xbrldi http://xbrl.org/2006/xbrldi nyx_NationalSecuritiesExchangeRegistrationsMember us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. No authoritative reference available. false 91 Summary of the intangible assets 2 us-gaap_IntangibleAssetsNetExcludingGoodwillAbstract us-gaap true na duration No definition available. false false false false false true false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 92 Estimated fair value 2 nyx_IntangibleAssetsExcludingGoodwillGross nyx false debit instant Intangible assets excluding goodwill gross. false false false false false false false false false false false verboselabel false 1 false true false false 4714000000 4714 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false true false false 5255000000 5255 false false false xbrli:monetaryItemType monetary Intangible assets excluding goodwill gross. No authoritative reference available. false 106 Customer relationships [Member] 0 na true na na No definition available. false true false false false false false false false false false http://nyse.com/role/goodwillandotherintangibleassetsdetails false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false false 11 true false false false Customer relationships [Member] us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_CustomerRelationshipsMember us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis explicitMember Pure Standard http://www.xbrl.org/2003/instance pure xbrli 0 false 12 USD true false false false Customer relationships [Member] us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_CustomerRelationshipsMember us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis explicitMember Pure Standard http://www.xbrl.org/2003/instance pure xbrli 0 USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 13 USD true false false false Customer relationships [Member] us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_CustomerRelationshipsMember us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. No authoritative reference available. false 112 Summary of the intangible assets 2 us-gaap_IntangibleAssetsNetExcludingGoodwillAbstract us-gaap true na duration No definition available. false false false false false true false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 113 Estimated fair value 2 nyx_IntangibleAssetsExcludingGoodwillGross nyx false debit instant Intangible assets excluding goodwill gross. false false false false false false false false false false false verboselabel false 1 false true false false 806000000 806 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false true false false 886000000 886 false false false xbrli:monetaryItemType monetary Intangible assets excluding goodwill gross. No authoritative reference available. false 114 Accumulated amortization 2 us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization us-gaap true credit instant No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 134000000 134 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false true false false 122000000 122 false false false xbrli:monetaryItemType monetary The accumulated amount of amortization of a major finite-lived intangible asset 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 a company. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 45 -Subparagraph a(1) false 115 Mininmun Useful Life (in years) 2 us-gaap_FiniteLivedIntangibleAssetsUsefulLifeMinimum us-gaap true na duration No definition available. false false false false false false false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false true false false 7 7 false false false 5 false true false false 7 7 false false false xbrli:decimalItemType decimal The minimum useful life of a major finite-lived intangible asset 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 a company. No authoritative reference available. false 116 Maximum Useful Life (in years) 2 us-gaap_FiniteLivedIntangibleAssetsUsefulLifeMaximum us-gaap true na duration No definition available. false false false false false false false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false true false false 20 20 false false false 5 false true false false 20 20 false false false xbrli:decimalItemType decimal The maximum useful life of a major finite-lived intangible asset 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 a company. No authoritative reference available. false 127 Trade names and Other [Member] 0 na true na na No definition available. false true false false false false false false false false false http://nyse.com/role/goodwillandotherintangibleassetsdetails false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false false 14 true false false false Trade names and Other [Member] us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis xbrldi http://xbrl.org/2006/xbrldi nyx_TradeNamesAndOtherMember us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis explicitMember Pure Standard http://www.xbrl.org/2003/instance pure xbrli 0 false 15 USD true false false false Trade names and Other [Member] us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis xbrldi http://xbrl.org/2006/xbrldi nyx_TradeNamesAndOtherMember us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis explicitMember Pure Standard http://www.xbrl.org/2003/instance pure xbrli 0 USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 16 USD true false false false Trade names and Other [Member] us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis xbrldi http://xbrl.org/2006/xbrldi nyx_TradeNamesAndOtherMember us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. No authoritative reference available. false 133 Summary of the intangible assets 2 us-gaap_IntangibleAssetsNetExcludingGoodwillAbstract us-gaap true na duration No definition available. false false false false false true false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 134 Estimated fair value 2 nyx_IntangibleAssetsExcludingGoodwillGross nyx false debit instant Intangible assets excluding goodwill gross. false false false false false false false false false false false verboselabel false 1 false true false false 179000000 179 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false true false false 195000000 195 false false false xbrli:monetaryItemType monetary Intangible assets excluding goodwill gross. No authoritative reference available. false 135 Accumulated amortization 2 us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization us-gaap true credit instant No definition available. false false false false false false false false false false false verboselabel false 1 true true false false 33000000 33 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 true true false false 30000000 30 false false false xbrli:monetaryItemType monetary The accumulated amount of amortization of a major finite-lived intangible asset 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 a company. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 45 -Subparagraph a(1) false 136 Mininmun Useful Life (in years) 2 us-gaap_FiniteLivedIntangibleAssetsUsefulLifeMinimum us-gaap true na duration No definition available. false false false false false false false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false true false false 2 2 false false false 5 false true false false 2 2 false false false xbrli:decimalItemType decimal The minimum useful life of a major finite-lived intangible asset 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 a company. No authoritative reference available. false 137 Maximum Useful Life (in years) 2 us-gaap_FiniteLivedIntangibleAssetsUsefulLifeMaximum us-gaap true na duration No definition available. false false false false false false false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false true false false 20 20 false false false 5 false true false false 20 20 false false false xbrli:decimalItemType decimal The maximum useful life of a major finite-lived intangible asset 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 a company. No authoritative reference available. false 5 49 false Millions UnKnown UnKnown true true