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  <element id="cme_DailyTransferBetweenClearingFirms" name="DailyTransferBetweenClearingFirms" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
  <element id="cme_TotalIndefiniteLivedIntangibleAssetsMember" name="TotalIndefiniteLivedIntangibleAssetsMember" nillable="true" type="us-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="cme_CommercialPaperMaturityDateRangeStart" name="CommercialPaperMaturityDateRangeStart" nillable="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="cme_CommercialPaperMaturityDateRangeEnd" name="CommercialPaperMaturityDateRangeEnd" nillable="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="cme_IndexServicesMember" name="IndexServicesMember" nillable="true" type="us-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="cme_ForeignCurrencyTranslationAdjustmentsIndefiniteMember" name="ForeignCurrencyTranslationAdjustmentsIndefiniteMember" nillable="true" type="us-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="cme_SeriesJuniorParticipatingPreferredStock001ParValue140SharesAuthorizedNoneIssuedOrOutstanding" name="SeriesJuniorParticipatingPreferredStock001ParValue140SharesAuthorizedNoneIssuedOrOutstanding" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" />
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  <element id="cme_OtherFiniteMember" name="OtherFiniteMember" nillable="true" type="us-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="cme_MarketDataAndInformationServices" name="MarketDataAndInformationServices" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" />
  <element id="cme_VestingOfIssuedRestrictedStockValue" name="VestingOfIssuedRestrictedStockValue" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
  <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_RangeDomain" name="RangeDomain" nillable="true" type="us-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="cme_MaximumMember" name="MaximumMember" nillable="true" type="us-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="cme_AccumulatedOtherComprehensiveIncomeLossAxis" name="AccumulatedOtherComprehensiveIncomeLossAxis" nillable="true" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" abstract="true" xbrli:periodType="duration" />
  <element id="cme_AccumulatedOtherComprehensiveIncomeLossDomain" name="AccumulatedOtherComprehensiveIncomeLossDomain" 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_ScheduleOfDebtTable" name="ScheduleOfDebtTable" nillable="true" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" xbrli:periodType="duration" />
  <element id="cme_TotalAmortizableIntangibleAssetsNetMember" name="TotalAmortizableIntangibleAssetsNetMember" nillable="true" type="us-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
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  <element id="cme_FixedRateNotesDueFebruaryTwoThousandFourteenMember" name="FixedRateNotesDueFebruaryTwoThousandFourteenMember" nillable="true" type="us-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="cme_FixedRateNotesDueMarchTwoThousandEighteenMember" name="FixedRateNotesDueMarchTwoThousandEighteenMember" nillable="true" type="us-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="cme_ReversalAccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax" name="ReversalAccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
  <element id="cme_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" name="IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" />
  <element id="cme_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" name="OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" nillable="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <element id="cme_GoodwillAndIntangibleAssetsDisclosureAbstract" name="GoodwillAndIntangibleAssetsDisclosureAbstract" nillable="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
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  <element id="cme_FutureAmortizationExpenseRemainderOfFiscalYear" name="FutureAmortizationExpenseRemainderOfFiscalYear" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
  <element id="cme_FutureAmortizationExpenseAfterYearFive" name="FutureAmortizationExpenseAfterYearFive" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
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  <element id="cme_MaturitiesOfLongTermDebtTableTextBlock" name="MaturitiesOfLongTermDebtTableTextBlock" nillable="true" type="us-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
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  <element id="cme_ForwardStartingInterestRateSwapAgreementMember" name="ForwardStartingInterestRateSwapAgreementMember" nillable="true" type="us-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="cme_LettersOfCreditOutstandingAmount" name="LettersOfCreditOutstandingAmount" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" />
  <element id="cme_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriodMinimum" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriodMinimum" nillable="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="cme_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriodMaximum" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriodMaximum" nillable="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="cme_ProceedsFromRepaymentsOfCommercialPaper" name="ProceedsFromRepaymentsOfCommercialPaper" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
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  <element id="cme_IncomeTaxDisclosureAbstract" name="IncomeTaxDisclosureAbstract" nillable="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <element id="cme_EffectiveIncomeTaxRateReconciliationStateApportionment" name="EffectiveIncomeTaxRateReconciliationStateApportionment" nillable="true" type="us-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="cme_IncomeTaxReconciliationStateApportionment" name="IncomeTaxReconciliationStateApportionment" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
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  <element id="cme_StockRepurchaseProgramAuthorizedAmount" name="StockRepurchaseProgramAuthorizedAmount" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" />
</schema>
