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| <link:definition> 0000004 - Statement - CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME </link:definition> |
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| <link:usedOn> link:calculationLink </link:usedOn> |
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| <link:definition> 0000004 - Statement - CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME </link:definition> |
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| <link:usedOn> link:calculationLink </link:usedOn> |
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| | | <link:roleType id="CONSOLIDATEDBALANCESHEETS" roleURI="http://www.moodys.com/role/CONSOLIDATEDBALANCESHEETS"> |
| <link:definition> 0000005 - Statement - CONSOLIDATED BALANCE SHEETS </link:definition> |
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| <link:usedOn> link:calculationLink </link:usedOn> |
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| <link:definition> 0000007 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS </link:definition> |
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| <link:usedOn> link:calculationLink </link:usedOn> |
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| <link:definition> 0000008 - Statement - CONSOLIDATED STATEMENT OF SHAREHOLDERS' EQUITY </link:definition> |
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| <link:usedOn> link:calculationLink </link:usedOn> |
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| | | <link:roleType id="DESCRIPTIONOFBUSINESSANDBASISOFPRESENTATION" roleURI="http://www.moodys.com/role/DESCRIPTIONOFBUSINESSANDBASISOFPRESENTATION"> |
| <link:definition> 0000010 - Disclosure - DESCRIPTION OF BUSINESS AND BASIS OF PRESENTATION </link:definition> |
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| <link:usedOn> link:calculationLink </link:usedOn> |
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| <link:definition> 0000011 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES </link:definition> |
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| <link:usedOn> link:calculationLink </link:usedOn> |
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| | | <link:roleType id="REVENUES" roleURI="http://www.moodys.com/role/REVENUES"> |
| <link:definition> 0000012 - Disclosure - REVENUES </link:definition> |
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| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
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| <link:definition> 0000013 - Disclosure - RECONCILIATION OF WEIGHTED AVERAGE SHARES OUTSTANDING </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
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| | | <link:roleType id="ACCELERATEDSHAREREPURCHASEPROGRAM" roleURI="http://www.moodys.com/role/ACCELERATEDSHAREREPURCHASEPROGRAM"> |
| <link:definition> 0000014 - Disclosure - ACCELERATED SHARE REPURCHASE PROGRAM </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
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| | | <link:roleType id="CASHEQUIVALENTSANDINVESTMENTS" roleURI="http://www.moodys.com/role/CASHEQUIVALENTSANDINVESTMENTS"> |
| <link:definition> 0000015 - Disclosure - CASH EQUIVALENTS AND INVESTMENTS </link:definition> |
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| <link:usedOn> link:calculationLink </link:usedOn> |
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| | | <link:roleType id="DERIVATIVEINSTRUMENTSANDHEDGINGACTIVITIES" roleURI="http://www.moodys.com/role/DERIVATIVEINSTRUMENTSANDHEDGINGACTIVITIES"> |
| <link:definition> 0000016 - Disclosure - DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES </link:definition> |
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| <link:usedOn> link:calculationLink </link:usedOn> |
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| | | <link:roleType id="PROPERTYANDEQUIPMENTNET" roleURI="http://www.moodys.com/role/PROPERTYANDEQUIPMENTNET"> |
| <link:definition> 0000017 - Disclosure - PROPERTY AND EQUIPMENT, NET </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType id="ACQUISITIONS" roleURI="http://www.moodys.com/role/ACQUISITIONS"> |
| <link:definition> 0000018 - Disclosure - ACQUISITIONS </link:definition> |
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| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
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| | | <link:roleType id="GOODWILLANDOTHERACQUIREDINTANGIBLEASSETS" roleURI="http://www.moodys.com/role/GOODWILLANDOTHERACQUIREDINTANGIBLEASSETS"> |
| <link:definition> 0000019 - Disclosure - GOODWILL AND OTHER ACQUIRED INTANGIBLE ASSETS </link:definition> |
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| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType id="RESTRUCTURING" roleURI="http://www.moodys.com/role/RESTRUCTURING"> |
| <link:definition> 0000020 - Disclosure - RESTRUCTURING </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType id="FAIRVALUE" roleURI="http://www.moodys.com/role/FAIRVALUE"> |
| <link:definition> 0000021 - Disclosure - FAIR VALUE </link:definition> |
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| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType id="OTHERBALANCESHEETINFORMATION" roleURI="http://www.moodys.com/role/OTHERBALANCESHEETINFORMATION"> |
| <link:definition> 0000022 - Disclosure - OTHER BALANCE SHEET INFORMATION </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType id="COMPREHENSIVEINCOMEANDACCUMULATEDOTHERCOMPREHENSIVEINCOME" roleURI="http://www.moodys.com/role/COMPREHENSIVEINCOMEANDACCUMULATEDOTHERCOMPREHENSIVEINCOME"> |
| <link:definition> 0000023 - Disclosure - COMPREHENSIVE INCOME AND ACCUMULATED OTHER COMPREHENSIVE INCOME </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType id="PENSIONANDOTHERRETIREMENTBENEFITS" roleURI="http://www.moodys.com/role/PENSIONANDOTHERRETIREMENTBENEFITS"> |
| <link:definition> 0000024 - Disclosure - PENSION AND OTHER RETIREMENT BENEFITS </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType id="STOCKBASEDCOMPENSATIONPLANS" roleURI="http://www.moodys.com/role/STOCKBASEDCOMPENSATIONPLANS"> |
| <link:definition> 0000025 - Disclosure - STOCK-BASED COMPENSATION PLANS </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType id="INCOMETAXES" roleURI="http://www.moodys.com/role/INCOMETAXES"> |
| <link:definition> 0000026 - Disclosure - INCOME TAXES </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
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| | | <link:roleType id="INDEBTEDNESS" roleURI="http://www.moodys.com/role/INDEBTEDNESS"> |
| <link:definition> 0000027 - Disclosure - INDEBTEDNESS </link:definition> |
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| <link:usedOn> link:calculationLink </link:usedOn> |
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| </link:roleType> |
| | | <link:roleType id="CAPITALSTOCK" roleURI="http://www.moodys.com/role/CAPITALSTOCK"> |
| <link:definition> 0000028 - Disclosure - CAPITAL STOCK </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType id="LEASECOMMITMENTS" roleURI="http://www.moodys.com/role/LEASECOMMITMENTS"> |
| <link:definition> 0000029 - Disclosure - LEASE COMMITMENTS </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType id="CONTINGENCIES" roleURI="http://www.moodys.com/role/CONTINGENCIES"> |
| <link:definition> 0000030 - Disclosure - CONTINGENCIES </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType id="SEGMENTINFORMATION" roleURI="http://www.moodys.com/role/SEGMENTINFORMATION"> |
| <link:definition> 0000031 - Disclosure - SEGMENT INFORMATION </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType id="VALUATIONANDQUALIFYINGACCOUNTS" roleURI="http://www.moodys.com/role/VALUATIONANDQUALIFYINGACCOUNTS"> |
| <link:definition> 0000032 - Disclosure - VALUATION AND QUALIFYING ACCOUNTS </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType id="OTHERNONOPERATINGEXPENSEINCOMENET" roleURI="http://www.moodys.com/role/OTHERNONOPERATINGEXPENSEINCOMENET"> |
| <link:definition> 0000033 - Disclosure - OTHER NON-OPERATING (EXPENSE) INCOME, NET </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType id="SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESPolicies" roleURI="http://www.moodys.com/role/SUMMARYOFSIGNIFICANTACCOUNTINGPOLICIESPolicies"> |
| <link:definition> 0000034 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
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| | | <link:roleType id="REVENUESTables" roleURI="http://www.moodys.com/role/REVENUESTables"> |
| <link:definition> 0000035 - Disclosure - REVENUES (Tables) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType id="RECONCILIATIONOFWEIGHTEDAVERAGESHARESOUTSTANDINGTables" roleURI="http://www.moodys.com/role/RECONCILIATIONOFWEIGHTEDAVERAGESHARESOUTSTANDINGTables"> |
| <link:definition> 0000036 - Disclosure - RECONCILIATION OF WEIGHTED AVERAGE SHARES OUTSTANDING (Tables) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType id="CASHEQUIVALENTSANDINVESTMENTSTables" roleURI="http://www.moodys.com/role/CASHEQUIVALENTSANDINVESTMENTSTables"> |
| <link:definition> 0000037 - Disclosure - CASH EQUIVALENTS AND INVESTMENTS (Tables) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType id="DERIVATIVEINSTRUMENTSANDHEDGINGACTIVITIESTables" roleURI="http://www.moodys.com/role/DERIVATIVEINSTRUMENTSANDHEDGINGACTIVITIESTables"> |
| <link:definition> 0000038 - Disclosure - DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Tables) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType id="PROPERTYANDEQUIPMENTNETTables" roleURI="http://www.moodys.com/role/PROPERTYANDEQUIPMENTNETTables"> |
| <link:definition> 0000039 - Disclosure - PROPERTY AND EQUIPMENT, NET (Tables) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType id="ACQUISITIONSTables" roleURI="http://www.moodys.com/role/ACQUISITIONSTables"> |
| <link:definition> 0000040 - Disclosure - ACQUISITIONS (Tables) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType id="GOODWILLANDOTHERACQUIREDINTANGIBLEASSETSTables" roleURI="http://www.moodys.com/role/GOODWILLANDOTHERACQUIREDINTANGIBLEASSETSTables"> |
| <link:definition> 0000041 - Disclosure - GOODWILL AND OTHER ACQUIRED INTANGIBLE ASSETS (Tables) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType id="RESTRUCTURINGTables" roleURI="http://www.moodys.com/role/RESTRUCTURINGTables"> |
| <link:definition> 0000042 - Disclosure - RESTRUCTURING (Tables) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
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| | | <link:roleType id="FAIRVALUETables" roleURI="http://www.moodys.com/role/FAIRVALUETables"> |
| <link:definition> 0000043 - Disclosure - FAIR VALUE (Tables) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
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| | | <link:roleType id="OTHERBALANCESHEETINFORMATIONTables" roleURI="http://www.moodys.com/role/OTHERBALANCESHEETINFORMATIONTables"> |
| <link:definition> 0000044 - Disclosure - OTHER BALANCE SHEET INFORMATION (Tables) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType id="COMPREHENSIVEINCOMEANDACCUMULATEDOTHERCOMPREHENSIVEINCOMETables" roleURI="http://www.moodys.com/role/COMPREHENSIVEINCOMEANDACCUMULATEDOTHERCOMPREHENSIVEINCOMETables"> |
| <link:definition> 0000045 - Disclosure - COMPREHENSIVE INCOME AND ACCUMULATED OTHER COMPREHENSIVE INCOME (Tables) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType id="PENSIONANDOTHERRETIREMENTBENEFITSTables" roleURI="http://www.moodys.com/role/PENSIONANDOTHERRETIREMENTBENEFITSTables"> |
| <link:definition> 0000046 - Disclosure - PENSION AND OTHER RETIREMENT BENEFITS (Tables) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType id="STOCKBASEDCOMPENSATIONPLANSTables" roleURI="http://www.moodys.com/role/STOCKBASEDCOMPENSATIONPLANSTables"> |
| <link:definition> 0000047 - Disclosure - STOCK-BASED COMPENSATION PLANS (Tables) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType id="INCOMETAXESTables" roleURI="http://www.moodys.com/role/INCOMETAXESTables"> |
| <link:definition> 0000048 - Disclosure - INCOME TAXES (Tables) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType id="INDEBTEDNESSTables" roleURI="http://www.moodys.com/role/INDEBTEDNESSTables"> |
| <link:definition> 0000049 - Disclosure - INDEBTEDNESS (Tables) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType id="CAPITALSTOCKTables" roleURI="http://www.moodys.com/role/CAPITALSTOCKTables"> |
| <link:definition> 0000050 - Disclosure - CAPITAL STOCK (Tables) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType id="LEASECOMMITMENTSTables" roleURI="http://www.moodys.com/role/LEASECOMMITMENTSTables"> |
| <link:definition> 0000051 - Disclosure - LEASE COMMITMENTS (Tables) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType id="SEGMENTINFORMATIONTables" roleURI="http://www.moodys.com/role/SEGMENTINFORMATIONTables"> |
| <link:definition> 0000052 - Disclosure - SEGMENT INFORMATION (Tables) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType id="VALUATIONANDQUALIFYINGACCOUNTSTables" roleURI="http://www.moodys.com/role/VALUATIONANDQUALIFYINGACCOUNTSTables"> |
| <link:definition> 0000053 - Disclosure - VALUATION AND QUALIFYING ACCOUNTS (Tables) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType id="OTHERNONOPERATINGEXPENSEINCOMENETTables" roleURI="http://www.moodys.com/role/OTHERNONOPERATINGEXPENSEINCOMENETTables"> |
| <link:definition> 0000054 - Disclosure - OTHER NON-OPERATING (EXPENSE) INCOME, NET (Tables) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType id="DescriptionofBusinessandBasisofPresentationAdditionalInformationDetail" roleURI="http://www.moodys.com/role/DescriptionofBusinessandBasisofPresentationAdditionalInformationDetail"> |
| <link:definition> 0000055 - Disclosure - Description of Business and Basis of Presentation - Additional Information (Detail) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType id="SummaryofSignificantAccountingPoliciesAdditionalInformationDetail" roleURI="http://www.moodys.com/role/SummaryofSignificantAccountingPoliciesAdditionalInformationDetail"> |
| <link:definition> 0000056 - Disclosure - Summary of Significant Accounting Policies - Additional Information (Detail) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType id="RevenuesRevenuebyCategoryDetail" roleURI="http://www.moodys.com/role/RevenuesRevenuebyCategoryDetail"> |
| <link:definition> 0000057 - Disclosure - Revenues - Revenue by Category (Detail) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType id="RevenuesRevenuesDisaggregatedbyLineofBusinessandGeographicalAreaDetail" roleURI="http://www.moodys.com/role/RevenuesRevenuesDisaggregatedbyLineofBusinessandGeographicalAreaDetail"> |
| <link:definition> 0000058 - Disclosure - Revenues - Revenues Disaggregated by Line of Business and Geographical Area (Detail) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType id="RevenuesConsolidatedRevenueInformationbyGeographicAreaDetail" roleURI="http://www.moodys.com/role/RevenuesConsolidatedRevenueInformationbyGeographicAreaDetail"> |
| <link:definition> 0000059 - Disclosure - Revenues - Consolidated Revenue Information by Geographic Area (Detail) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType id="RevenuesTransactionandRelationshipRevenueDetail" roleURI="http://www.moodys.com/role/RevenuesTransactionandRelationshipRevenueDetail"> |
| <link:definition> 0000060 - Disclosure - Revenues - Transaction and Relationship Revenue (Detail) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType id="RevenuesRevenueRecognitionTimingDetail" roleURI="http://www.moodys.com/role/RevenuesRevenueRecognitionTimingDetail"> |
| <link:definition> 0000061 - Disclosure - Revenues - Revenue Recognition Timing (Detail) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType id="RevenuesAdditionalInformationDetail" roleURI="http://www.moodys.com/role/RevenuesAdditionalInformationDetail"> |
| <link:definition> 0000062 - Disclosure - Revenues - Additional Information (Detail) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType id="RevenuesScheduleofChangesintheDeferredRevenueBalancesDetail" roleURI="http://www.moodys.com/role/RevenuesScheduleofChangesintheDeferredRevenueBalancesDetail"> |
| <link:definition> 0000063 - Disclosure - Revenues - Schedule of Changes in the Deferred Revenue Balances (Detail) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType id="RevenuesExpectedRecognitionPeriodforRemainingPerformanceObligationsDetail" roleURI="http://www.moodys.com/role/RevenuesExpectedRecognitionPeriodforRemainingPerformanceObligationsDetail"> |
| <link:definition> 0000064 - Disclosure - Revenues - Expected Recognition Period for Remaining Performance Obligations (Detail) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType id="RevenuesExpectedRecognitionPeriodforRemainingPerformanceObligationsDetail_1" roleURI="http://www.moodys.com/role/RevenuesExpectedRecognitionPeriodforRemainingPerformanceObligationsDetail_1"> |
| <link:definition> 0000064 - Disclosure - Revenues - Expected Recognition Period for Remaining Performance Obligations (Detail) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType id="RevenuesCoststoFulfillaContractwithaCustomerDetails" roleURI="http://www.moodys.com/role/RevenuesCoststoFulfillaContractwithaCustomerDetails"> |
| <link:definition> 0000065 - Disclosure - Revenues - Costs to Fulfill a Contract with a Customer (Details) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType id="ReconciliationofWeightedAverageSharesOutstandingReconciliationofBasictoDilutedSharesOutstandingDetail" roleURI="http://www.moodys.com/role/ReconciliationofWeightedAverageSharesOutstandingReconciliationofBasictoDilutedSharesOutstandingDetail"> |
| <link:definition> 0000066 - Disclosure - Reconciliation of Weighted Average Shares Outstanding - Reconciliation of Basic to Diluted Shares Outstanding (Detail) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType id="AcceleratedShareRepurchaseProgramAdditionalInformationDetails" roleURI="http://www.moodys.com/role/AcceleratedShareRepurchaseProgramAdditionalInformationDetails"> |
| <link:definition> 0000067 - Disclosure - Accelerated Share Repurchase Program - Additional Information (Details) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType id="CashEquivalentsandInvestmentsDetail" roleURI="http://www.moodys.com/role/CashEquivalentsandInvestmentsDetail"> |
| <link:definition> 0000068 - Disclosure - Cash Equivalents and Investments (Detail) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType id="CashEquivalentsandInvestmentsFootnoteDetail" roleURI="http://www.moodys.com/role/CashEquivalentsandInvestmentsFootnoteDetail"> |
| <link:definition> 0000069 - Disclosure - Cash Equivalents and Investments - Footnote (Detail) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType id="CashEquivalentsandInvestmentsNarrativeDetails" roleURI="http://www.moodys.com/role/CashEquivalentsandInvestmentsNarrativeDetails"> |
| <link:definition> 0000070 - Disclosure - Cash Equivalents and Investments - Narrative (Details) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType id="DerivativeInstrumentsAndHedgingActivitiesScheduleofInterestRateSwapDetails" roleURI="http://www.moodys.com/role/DerivativeInstrumentsAndHedgingActivitiesScheduleofInterestRateSwapDetails"> |
| <link:definition> 0000071 - Disclosure - Derivative Instruments And Hedging Activities - Schedule of Interest Rate Swap (Details) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType id="DerivativeInstrumentsAndHedgingActivitiesSummaryofNetGainLossonInterestRateSwapsDesignatedinFairValueHedgeDetail" roleURI="http://www.moodys.com/role/DerivativeInstrumentsAndHedgingActivitiesSummaryofNetGainLossonInterestRateSwapsDesignatedinFairValueHedgeDetail"> |
| <link:definition> 0000072 - Disclosure - Derivative Instruments And Hedging Activities - Summary of Net Gain (Loss) on Interest Rate Swaps Designated in Fair Value Hedge (Detail) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType id="DerivativeInstrumentsAndHedgingActivitiesAdditionalInformationDetail" roleURI="http://www.moodys.com/role/DerivativeInstrumentsAndHedgingActivitiesAdditionalInformationDetail"> |
| <link:definition> 0000073 - Disclosure - Derivative Instruments And Hedging Activities - Additional Information (Detail) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType id="DerivativeInstrumentsAndHedgingActivitiesSummaryofNotionalAmountsofOutstandingCrossCurrencySwapDetail" roleURI="http://www.moodys.com/role/DerivativeInstrumentsAndHedgingActivitiesSummaryofNotionalAmountsofOutstandingCrossCurrencySwapDetail"> |
| <link:definition> 0000074 - Disclosure - Derivative Instruments And Hedging Activities - Summary of Notional Amounts of Outstanding Cross Currency Swap (Detail) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType id="DerivativeInstrumentsAndHedgingActivitiesScheduleofNotionalAmountofNetInvestmentHedgesDetail" roleURI="http://www.moodys.com/role/DerivativeInstrumentsAndHedgingActivitiesScheduleofNotionalAmountofNetInvestmentHedgesDetail"> |
| <link:definition> 0000075 - Disclosure - Derivative Instruments And Hedging Activities - Schedule of Notional Amount of Net Investment Hedges (Detail) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType id="DerivativeInstrumentsAndHedgingActivitiesSummaryofNotionalAmountsofOutstandingForwardContractsDesignatedasaNetInvestmentHedgeDetail" roleURI="http://www.moodys.com/role/DerivativeInstrumentsAndHedgingActivitiesSummaryofNotionalAmountsofOutstandingForwardContractsDesignatedasaNetInvestmentHedgeDetail"> |
| <link:definition> 0000076 - Disclosure - Derivative Instruments And Hedging Activities - Summary of Notional Amounts of Outstanding Forward Contracts Designated as a Net Investment Hedge (Detail) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType id="DerivativeInstrumentsAndHedgingActivitiesGainsLossesRecognizedinAOCIandReclassifiedfromAOCIonDerivativesDetail" roleURI="http://www.moodys.com/role/DerivativeInstrumentsAndHedgingActivitiesGainsLossesRecognizedinAOCIandReclassifiedfromAOCIonDerivativesDetail"> |
| <link:definition> 0000077 - Disclosure - Derivative Instruments And Hedging Activities - Gains (Losses) Recognized in AOCI and Reclassified from AOCI on Derivatives (Detail) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType id="DerivativeInstrumentsAndHedgingActivitiesCumulativeAmountofUnrecognizedHedgeLossesRecordedinAOCIDetail" roleURI="http://www.moodys.com/role/DerivativeInstrumentsAndHedgingActivitiesCumulativeAmountofUnrecognizedHedgeLossesRecordedinAOCIDetail"> |
| <link:definition> 0000078 - Disclosure - Derivative Instruments And Hedging Activities - Cumulative Amount of Unrecognized Hedge Losses Recorded in AOCI (Detail) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType id="DerivativeInstrumentsAndHedgingActivitiesSummaryofNotionalAmountsofOutstandingForeignExchangeForwardsDetail" roleURI="http://www.moodys.com/role/DerivativeInstrumentsAndHedgingActivitiesSummaryofNotionalAmountsofOutstandingForeignExchangeForwardsDetail"> |
| <link:definition> 0000079 - Disclosure - Derivative Instruments And Hedging Activities - Summary of Notional Amounts of Outstanding Foreign Exchange Forwards (Detail) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType id="DerivativeInstrumentsAndHedgingActivitiesSummaryofNetGainLossonForeignExchangeForwardsNotDesignatedasHedgingInstrumentsDetail" roleURI="http://www.moodys.com/role/DerivativeInstrumentsAndHedgingActivitiesSummaryofNetGainLossonForeignExchangeForwardsNotDesignatedasHedgingInstrumentsDetail"> |
| <link:definition> 0000080 - Disclosure - Derivative Instruments And Hedging Activities - Summary of Net Gain (Loss) on Foreign Exchange Forwards Not Designated as Hedging Instruments (Detail) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType id="DerivativeInstrumentsAndHedgingActivitiesFairValueofDerivativeInstrumentsDetail" roleURI="http://www.moodys.com/role/DerivativeInstrumentsAndHedgingActivitiesFairValueofDerivativeInstrumentsDetail"> |
| <link:definition> 0000081 - Disclosure - Derivative Instruments And Hedging Activities - Fair Value of Derivative Instruments (Detail) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType id="PropertyandEquipmentNetDetail" roleURI="http://www.moodys.com/role/PropertyandEquipmentNetDetail"> |
| <link:definition> 0000082 - Disclosure - Property and Equipment, Net (Detail) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType id="PropertyandEquipmentNetAdditionalInformationDetail" roleURI="http://www.moodys.com/role/PropertyandEquipmentNetAdditionalInformationDetail"> |
| <link:definition> 0000083 - Disclosure - Property and Equipment, Net - Additional Information (Detail) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType id="AcquisitionsAcquisitionsNarrativeDetail" roleURI="http://www.moodys.com/role/AcquisitionsAcquisitionsNarrativeDetail"> |
| <link:definition> 0000084 - Disclosure - Acquisitions - Acquisitions Narrative (Detail) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType id="AcquisitionsTotalConsiderationRelatingtoAcquisitionDetail" roleURI="http://www.moodys.com/role/AcquisitionsTotalConsiderationRelatingtoAcquisitionDetail"> |
| <link:definition> 0000085 - Disclosure - Acquisitions - Total Consideration Relating to Acquisition (Detail) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType id="AcquisitionsPurchasePriceAllocationDetail" roleURI="http://www.moodys.com/role/AcquisitionsPurchasePriceAllocationDetail"> |
| <link:definition> 0000086 - Disclosure - Acquisitions - Purchase Price Allocation (Detail) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType id="AcquisitionsProFormaInformationDetails" roleURI="http://www.moodys.com/role/AcquisitionsProFormaInformationDetails"> |
| <link:definition> 0000087 - Disclosure - Acquisitions - Pro Forma Information (Details) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType id="GoodwillAndOtherAcquiredIntangibleAssetsActivityinGoodwillDetail" roleURI="http://www.moodys.com/role/GoodwillAndOtherAcquiredIntangibleAssetsActivityinGoodwillDetail"> |
| <link:definition> 0000088 - Disclosure - Goodwill And Other Acquired Intangible Assets - Activity in Goodwill (Detail) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType id="GoodwillAndOtherAcquiredIntangibleAssetsAcquiredIntangibleAssetsandRelatedAmortizationDetail" roleURI="http://www.moodys.com/role/GoodwillAndOtherAcquiredIntangibleAssetsAcquiredIntangibleAssetsandRelatedAmortizationDetail"> |
| <link:definition> 0000089 - Disclosure - Goodwill And Other Acquired Intangible Assets - Acquired Intangible Assets and Related Amortization (Detail) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType id="GoodwillAndOtherAcquiredIntangibleAssetsAmortizationExpenseRelatingtoAcquiredIntangibleAssetsDetail" roleURI="http://www.moodys.com/role/GoodwillAndOtherAcquiredIntangibleAssetsAmortizationExpenseRelatingtoAcquiredIntangibleAssetsDetail"> |
| <link:definition> 0000090 - Disclosure - Goodwill And Other Acquired Intangible Assets - Amortization Expense Relating to Acquired Intangible Assets (Detail) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType id="GoodwillAndOtherAcquiredIntangibleAssetsEstimatedFutureAmortizationExpenseforAcquiredIntangibleAssetsSubjecttoAmortizationDetail" roleURI="http://www.moodys.com/role/GoodwillAndOtherAcquiredIntangibleAssetsEstimatedFutureAmortizationExpenseforAcquiredIntangibleAssetsSubjecttoAmortizationDetail"> |
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| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType id="SegmentInformationFinancialInformationbySegmentDetail" roleURI="http://www.moodys.com/role/SegmentInformationFinancialInformationbySegmentDetail"> |
| <link:definition> 0000138 - Disclosure - Segment Information - Financial Information by Segment (Detail) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType id="SegmentInformationCumulativeRestructuringExpenseDetails" roleURI="http://www.moodys.com/role/SegmentInformationCumulativeRestructuringExpenseDetails"> |
| <link:definition> 0000139 - Disclosure - Segment Information - Cumulative Restructuring Expense (Details) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType id="SegmentInformationConsolidatedRevenueInformationbyGeographicAreaDetail" roleURI="http://www.moodys.com/role/SegmentInformationConsolidatedRevenueInformationbyGeographicAreaDetail"> |
| <link:definition> 0000140 - Disclosure - Segment Information - Consolidated Revenue Information by Geographic Area (Detail) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
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| | | <link:roleType id="ValuationandQualifyingAccountsSummaryofActivityforValuationAllowancesDetail" roleURI="http://www.moodys.com/role/ValuationandQualifyingAccountsSummaryofActivityforValuationAllowancesDetail"> |
| <link:definition> 0000141 - Disclosure - Valuation and Qualifying Accounts - Summary of Activity for Valuation Allowances (Detail) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
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| | | <link:roleType id="ComponentsofOtherNonOperatingExpenseIncomeNetDetail" roleURI="http://www.moodys.com/role/ComponentsofOtherNonOperatingExpenseIncomeNetDetail"> |
| <link:definition> 0000142 - Disclosure - Components of Other Non-Operating (Expense) Income, Net (Detail) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
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| | | </xs:appinfo> |
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| <xs:element id="mco_TwoThousandAndTwentyOneSeniorNoteDueTwoThousandAndFortyOneMember" abstract="true" name="TwoThousandAndTwentyOneSeniorNoteDueTwoThousandAndFortyOneMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/> |
| <xs:element id="mco_February92021Member" abstract="true" name="February92021Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/> |
| <xs:element id="mco_DefinedBenefitPlanCommonCollectiveTrustFundFixedIncomeSecuritiesIntermediateTermInvestmentGradeU.S.GovernmentCorporateBondsMember" abstract="true" name="DefinedBenefitPlanCommonCollectiveTrustFundFixedIncomeSecuritiesIntermediateTermInvestmentGradeU.S.GovernmentCorporateBondsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/> |
| <xs:element id="mco_GeneralCustomerContractPaymentCondition" abstract="false" name="GeneralCustomerContractPaymentCondition" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/> |
| <xs:element id="mco_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeaseRightOfUseAssets" abstract="false" name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeaseRightOfUseAssets" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="mco_RMSPlansMember" abstract="true" name="RMSPlansMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/> |
| <xs:element id="mco_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedUncertainTaxPositions" abstract="false" name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedUncertainTaxPositions" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="mco_EmployeeServiceShareBasedCompensationTaxBenefitFromVestingOfOtherThanStockOptions" abstract="false" name="EmployeeServiceShareBasedCompensationTaxBenefitFromVestingOfOtherThanStockOptions" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="mco_AdjustedLIBORMember" abstract="true" name="AdjustedLIBORMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/> |
| <xs:element id="mco_SeriesCommonStockMember" abstract="true" name="SeriesCommonStockMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/> |
| <xs:element id="mco_EffectOfExchangeRateOnDeferredRevenue" abstract="false" name="EffectOfExchangeRateOnDeferredRevenue" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="mco_TermLoanFacilityAnyFiscalQuarterMember" abstract="true" name="TermLoanFacilityAnyFiscalQuarterMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/> |
| <xs:element id="mco_AdjustedOperatingIncome" abstract="false" name="AdjustedOperatingIncome" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="mco_CapitalizedCostsToObtainSalesContractsMember" abstract="true" name="CapitalizedCostsToObtainSalesContractsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/> |
| <xs:element id="mco_A2018RestructuringProgramMember" abstract="true" name="A2018RestructuringProgramMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/> |
| <xs:element id="mco_AcceleratedShareRepurchaseTextBlock" abstract="false" name="AcceleratedShareRepurchaseTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/> |
| <xs:element id="mco_OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentBeforeReclassificationAndTax" abstract="false" name="OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentBeforeReclassificationAndTax" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="mco_SummaryOfPreTaxNetActuarialLossesAndPriorServiceCostRecognizedInAccumulatedOtherComprehensiveIncomeTableTextBlock" abstract="false" name="SummaryOfPreTaxNetActuarialLossesAndPriorServiceCostRecognizedInAccumulatedOtherComprehensiveIncomeTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/> |
| <xs:element id="mco_CustomerBillingsAndPaymentsReceivedInAdvance" abstract="false" name="CustomerBillingsAndPaymentsReceivedInAdvance" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="mco_PercentageOfRevenues" abstract="false" name="PercentageOfRevenues" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/> |
| <xs:element id="mco_AssetsBackedSecuritiesMember" abstract="true" name="AssetsBackedSecuritiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/> |
| <xs:element id="mco_DeferredTaxLiabilitiesAccumulatedDepreciationAndAmortizationNonCurrent" abstract="false" name="DeferredTaxLiabilitiesAccumulatedDepreciationAndAmortizationNonCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="mco_A20222023GeolocationRestructuringProgramMember" abstract="true" name="A20222023GeolocationRestructuringProgramMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/> |
| <xs:element id="mco_OtherComprehensiveIncomeLossCashFlowHedgeandNetInvestmentHedgeGainLossBeforeReclassificationAfterTax" abstract="false" name="OtherComprehensiveIncomeLossCashFlowHedgeandNetInvestmentHedgeGainLossBeforeReclassificationAfterTax" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="mco_ResidentialMortgageBackedSecuritiesProductMember" abstract="true" name="ResidentialMortgageBackedSecuritiesProductMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/> |
| <xs:element id="mco_AcquireMediaMember" abstract="true" name="AcquireMediaMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/> |
| <xs:element id="mco_OtherNonOperatingIncomeExpenseOther" abstract="false" name="OtherNonOperatingIncomeExpenseOther" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="mco_OtherComprehensiveIncomeLossNetInvestmentHedgeGainLossReclassificationNetofTax" abstract="false" name="OtherComprehensiveIncomeLossNetInvestmentHedgeGainLossReclassificationNetofTax" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="mco_AcceleratedShareRepurchasesMember" abstract="true" name="AcceleratedShareRepurchasesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/> |
| <xs:element id="mco_OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentReclassificationBeforeTax" abstract="false" name="OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentReclassificationBeforeTax" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="mco_CapitalizedCostsToFulfillSalesContractsMember" abstract="true" name="CapitalizedCostsToFulfillSalesContractsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/> |
| <xs:element id="mco_StructuredCreditMember" abstract="true" name="StructuredCreditMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/> |
| <xs:element id="mco_InsuranceMember" abstract="true" name="InsuranceMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/> |
| <xs:element id="mco_FixedReceivedWeightedAverageInterestRateMember" abstract="true" name="FixedReceivedWeightedAverageInterestRateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/> |
| <xs:element id="mco_AcceleratedShareRepurchaseIntialDateMember" abstract="true" name="AcceleratedShareRepurchaseIntialDateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/> |
| <xs:element id="mco_AcquireMediaZMFinancialSystemsCatylistIncMember" abstract="true" name="AcquireMediaZMFinancialSystemsCatylistIncMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/> |
| <xs:element id="mco_SubscriptionAndMaintenanceContractsMember" abstract="true" name="SubscriptionAndMaintenanceContractsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/> |
| <xs:element id="mco_DisposalGroupIncludingDiscontinuedOperationIndemnificationProvisionLiability" abstract="false" name="DisposalGroupIncludingDiscontinuedOperationIndemnificationProvisionLiability" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="mco_ThreeMonthsUsLiborMember" abstract="true" name="ThreeMonthsUsLiborMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/> |
| <xs:element id="mco_TwoThousandAndTwentyOneSeniorNoteDueTwoThousandAndSixtyOneMember" abstract="true" name="TwoThousandAndTwentyOneSeniorNoteDueTwoThousandAndSixtyOneMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/> |
| <xs:element id="mco_DebtInstrumentCovenantMaximumDebtToEBITDARatio" abstract="false" name="DebtInstrumentCovenantMaximumDebtToEBITDARatio" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/> |
| <xs:element id="mco_FairValueAdjustmentToDeferredRevenueMember" abstract="true" name="FairValueAdjustmentToDeferredRevenueMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/> |
| <xs:element id="mco_StockOptionsAndRestrictedStockAwardsTableTextBlock" abstract="false" name="StockOptionsAndRestrictedStockAwardsTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/> |
| <xs:element id="mco_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeaseLiabilities" abstract="false" name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeaseLiabilities" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="mco_TwoThousandAndTwentySeniorNoteDueTwoThousandAndFiftyMember" abstract="true" name="TwoThousandAndTwentySeniorNoteDueTwoThousandAndFiftyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/> |
| <xs:element id="mco_UnrecognizedTaxBenefitsAndOtherNonCurrentTaxLiabilitiesPeriodIncreaseDecrease" abstract="false" name="UnrecognizedTaxBenefitsAndOtherNonCurrentTaxLiabilitiesPeriodIncreaseDecrease" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="mco_OperatingAndSellingGeneralAndAdministrativeExpense" abstract="false" name="OperatingAndSellingGeneralAndAdministrativeExpense" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="mco_TwentyThirteenSeniorNotesMember" abstract="true" name="TwentyThirteenSeniorNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/> |
| <xs:element id="mco_CommercialMortgageBackedSecuritiesProductMember" abstract="true" name="CommercialMortgageBackedSecuritiesProductMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/> |
| <xs:element id="mco_February72022Member" abstract="true" name="February72022Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/> |
| <xs:element id="mco_ZMFinancialSystemsMember" abstract="true" name="ZMFinancialSystemsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/> |
| <xs:element id="mco_OtherComprehensiveIncomeLossCashFlowHedgeandNetInvestmentHedgeGainLossReclassificationAfterTax" abstract="false" name="OtherComprehensiveIncomeLossCashFlowHedgeandNetInvestmentHedgeGainLossReclassificationAfterTax" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="mco_OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentBeforeReclassificationTax" abstract="false" name="OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentBeforeReclassificationTax" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="mco_DecisionSolutionsMember" abstract="true" name="DecisionSolutionsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/> |
| <xs:element id="mco_MoodysAnalyticsMember" abstract="true" name="MoodysAnalyticsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/> |
| <xs:element id="mco_NetInvestmentHedgingSettlementYear2026Member" abstract="true" name="NetInvestmentHedgingSettlementYear2026Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/> |
| <xs:element id="mco_RatingRevenueMember" abstract="true" name="RatingRevenueMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/> |
| <xs:element id="mco_ProjectAndInfrastructureMember" abstract="true" name="ProjectAndInfrastructureMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/> |
| <xs:element id="mco_DirectorsPlanMember" abstract="true" name="DirectorsPlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/> |
| <xs:element id="mco_ForeignCurrencyForwardContractsToSellUsdForJapaneseYenMember" abstract="true" name="ForeignCurrencyForwardContractsToSellUsdForJapaneseYenMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/> |
| <xs:element id="mco_ForeignCurrencyForwardContractsToSellPoundsForUSDMember" abstract="true" name="ForeignCurrencyForwardContractsToSellPoundsForUSDMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/> |
| <xs:element id="mco_StructuredFinanceLineOfBusinessMember" abstract="true" name="StructuredFinanceLineOfBusinessMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/> |
| <xs:element id="mco_FixedRateDomain" abstract="true" name="FixedRateDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/> |
| <xs:element id="mco_FinancialInstitutionsMember" abstract="true" name="FinancialInstitutionsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/> |
| <xs:element id="mco_CorporateFinanceMember" abstract="true" name="CorporateFinanceMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/> |
| <xs:element id="mco_SharesOfAllClassesOfStockParValue" abstract="false" name="SharesOfAllClassesOfStockParValue" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/> |
| <xs:element id="mco_TwoThousandEighteenSeniorNoteDueTwoThousandFourtyEightMember" abstract="true" name="TwoThousandEighteenSeniorNoteDueTwoThousandFourtyEightMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/> |
| <xs:element id="mco_HighYieldMember" abstract="true" name="HighYieldMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/> |
| <xs:element id="mco_TwoThousandSeventeenSeniorNoteDueTwoThousandTwentyEightMember" abstract="true" name="TwoThousandSeventeenSeniorNoteDueTwoThousandTwentyEightMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/> |
| <xs:element id="mco_PensionExpenseNetPeriodicPensionCostsOther" abstract="false" name="PensionExpenseNetPeriodicPensionCostsOther" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="mco_A1998And2001PlanMember" abstract="true" name="A1998And2001PlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/> |
| <xs:element id="mco_CurrencyReceivedMember" abstract="true" name="CurrencyReceivedMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/> |
| <xs:element id="mco_ForeignCurrencyForwardContractsToSellEurosForUSDMember" abstract="true" name="ForeignCurrencyForwardContractsToSellEurosForUSDMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/> |
| <xs:element id="mco_ComputerSoftwareMember" abstract="true" name="ComputerSoftwareMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/> |
| <xs:element id="mco_RMSMember" abstract="true" name="RMSMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/> |
| <xs:element id="mco_PaymentsOfDebtIssuanceAndDebtExtinguishmentOrDebtPrepaymentCosts" abstract="false" name="PaymentsOfDebtIssuanceAndDebtExtinguishmentOrDebtPrepaymentCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="mco_NonVestedRestrictedStockMember" abstract="true" name="NonVestedRestrictedStockMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/> |
| <xs:element id="mco_A2020MAStrategicReorganizationRestructuringProgramMember" abstract="true" name="A2020MAStrategicReorganizationRestructuringProgramMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/> |
| <xs:element id="mco_BankLoansMember" abstract="true" name="BankLoansMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/> |
| <xs:element id="mco_EuroShortTermRateMember" abstract="true" name="EuroShortTermRateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/> |
| <xs:element id="mco_SettlementOfTreasuryRateLock" abstract="false" name="SettlementOfTreasuryRateLock" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="mco_OtherComprehensiveIncomeLossNetInvestmentHedgeGainLossReclassificationTax" abstract="false" name="OtherComprehensiveIncomeLossNetInvestmentHedgeGainLossReclassificationTax" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| <xs:element id="mco_TwoThousandSeventeenFiveYearPrivatePlacementDueTwoThousandTwentyThreeMember" abstract="true" name="TwoThousandSeventeenFiveYearPrivatePlacementDueTwoThousandTwentyThreeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/> |
| <xs:element id="mco_AccumulatedDefinedBenefitPlansAdjustmentNetGainLossAndPriorServiceCostsPortionAttributableToParentMember" abstract="true" name="AccumulatedDefinedBenefitPlansAdjustmentNetGainLossAndPriorServiceCostsPortionAttributableToParentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/> |
| <xs:element id="mco_AcceleratedShareRepurchaseFinalSettlementDateMember" abstract="true" name="AcceleratedShareRepurchaseFinalSettlementDateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/> |
| <xs:element id="mco_DeferredTaxAssetsOperatingLeaseLiabilities" abstract="false" name="DeferredTaxAssetsOperatingLeaseLiabilities" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/> |
| </xs:schema> |