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  <element id="cme_PercentageAllocatedToParentAndExternalPartyOfCrossMarginArrangementOfGainsLossesOnLiquidationOfOpenPositionAndCrossMarginAccount" name="PercentageAllocatedToParentAndExternalPartyOfCrossMarginArrangementOfGainsLossesOnLiquidationOfOpenPositionAndCrossMarginAccount" nillable="true" type="us-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
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  <element id="cme_PercentageOfMarketDataAndInformationServicesRevenueByTwoLargestResellers" name="PercentageOfMarketDataAndInformationServicesRevenueByTwoLargestResellers" nillable="true" type="us-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
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  <element id="cme_SegmentReportingTextBlock" name="SegmentReportingTextBlock" nillable="true" type="us-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
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  <element id="cme_BolsaMexicanaDeValoresSBDeCVMember" name="BolsaMexicanaDeValoresSBDeCVMember" nillable="true" type="us-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
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  <element id="cme_GuaranteeOfCboeErpLiabilityMember" name="GuaranteeOfCboeErpLiabilityMember" nillable="true" type="us-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
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  <element id="cme_DowJonesMember" name="DowJonesMember" nillable="true" type="us-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
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  <element id="cme_TermLoanDue2011InterestEqualTo3MonthLiborPlus100ResetQuarterlyMember" name="TermLoanDue2011InterestEqualTo3MonthLiborPlus100ResetQuarterlyMember" nillable="true" type="us-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="cme_FixedRateNotesDueAugust2013InterestEqualTo540Member" name="FixedRateNotesDueAugust2013InterestEqualTo540Member" nillable="true" type="us-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="cme_FixedRateNotesDueAugust2014InterestEqualTo575Member" name="FixedRateNotesDueAugust2014InterestEqualTo575Member" nillable="true" type="us-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
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  <element id="cme_AdditionalOfficeSpaceChicagoMember" name="AdditionalOfficeSpaceChicagoMember" nillable="true" type="us-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="cme_CmaInvestmentInOneChicagoLlcMember" name="CmaInvestmentInOneChicagoLlcMember" nillable="true" type="us-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
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  <element id="cme_ImpactOfRevisedStateAppointmentEstimates" name="ImpactOfRevisedStateAppointmentEstimates" nillable="true" type="us-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
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  <element id="cme_OtherComprehensiveIncomeDerivativesQualifyingAsHedgesIneffectivenessOnCashFlowHedge" name="OtherComprehensiveIncomeDerivativesQualifyingAsHedgesIneffectivenessOnCashFlowHedge" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
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  <element id="cme_CommercialPaperOutstanding" name="CommercialPaperOutstanding" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" />
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  <element id="cme_ReclassificationOfGainOnSaleOfSecurityMember" name="ReclassificationOfGainOnSaleOfSecurityMember" nillable="true" type="us-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="cme_IneffectivenessOnCashFlowHedgeMember" name="IneffectivenessOnCashFlowHedgeMember" nillable="true" type="us-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="cme_EffectOfStockOptions" name="EffectOfStockOptions" nillable="true" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="cme_FairValueOptions" name="FairValueOptions" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
  <element id="cme_FairValueOfClassCommonStockStockOptionsAndRestrictedStockUnitsIssuesInConnectionWithMerger" name="FairValueOfClassCommonStockStockOptionsAndRestrictedStockUnitsIssuesInConnectionWithMerger" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
  <element id="cme_FixedRateNotes" name="FixedRateNotes" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="debit" />
  <element id="cme_IEFRevenue" name="IEFRevenue" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" />
  <element id="cme_PerformanceBondLettersOfCredit" name="PerformanceBondLettersOfCredit" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="debit" />
  <element id="cme_UnrecordedUnconditionalPurchaseObligationBalanceThereafter" name="UnrecordedUnconditionalPurchaseObligationBalanceThereafter" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" />
  <element id="cme_UnrecordedUnconditionalPurchaseObligationTotal" name="UnrecordedUnconditionalPurchaseObligationTotal" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" />
  <element id="cme_OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTax" name="OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTax" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
  <element id="cme_WorkingCapitalDesignatedForClearanceOfDefaultInOverCounterInterestRateSwap" name="WorkingCapitalDesignatedForClearanceOfDefaultInOverCounterInterestRateSwap" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
  <element id="cme_ReclassificationOfRealizedGainOnCashFlowHedgeMember" name="ReclassificationOfRealizedGainOnCashFlowHedgeMember" nillable="true" type="us-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="cme_NetActuarialGainMember" name="NetActuarialGainMember" nillable="true" type="us-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="cme_OtherComprehensiveIncomeOnReclassificationOfSecuritiesImpairmentArisingDuringPeriodNetOfTax" name="OtherComprehensiveIncomeOnReclassificationOfSecuritiesImpairmentArisingDuringPeriodNetOfTax" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
  <element id="cme_AcquiredIntangibleAssetAmountTotalIndexServices" name="AcquiredIntangibleAssetAmountTotalIndexServices" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
  <element id="cme_PriorServiceCostsMember" name="PriorServiceCostsMember" nillable="true" type="us-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="cme_CommittedLineOfCreditNumberOfDaysFullySecured" name="CommittedLineOfCreditNumberOfDaysFullySecured" nillable="true" type="xbrli:positiveIntegerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
</schema>
</XBRL>
