$MCO
MOODYS CORP /DE/ Stock $mco

$mco Overview Financials Valuation SEC Filings Company Website

2018 Q3 Form 10-Q Financial Statement

#000119312518314004 Filed on October 31, 2018

Income Statement

Concept	2018 Q3	2017 Q4	2017 Q3
Revenue	$1.081B	$1.166B	$1.063B
YoY Change	1.68%	23.71%	15.9%
Cost Of Revenue	$306.3M	$336.2M	$317.2M
YoY Change	-3.44%	26.72%	25.28%
Gross Profit	$774.5M	$829.3M	$745.7M
YoY Change	3.86%	22.53%	12.32%
Gross Profit Margin	71.66%	71.15%	70.16%
Selling, General & Admin	$260.3M	$299.1M	$245.7M
YoY Change	5.94%	18.13%	9.05%
% of Gross Profit	33.61%	36.07%	32.95%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$46.10M	$49.90M	$43.00M
YoY Change	7.21%	51.67%	31.5%
% of Gross Profit	5.95%	6.02%	5.77%
Operating Expenses	$614.0M	$349.0M	$614.4M
YoY Change	-0.07%	21.99%	18.24%
Operating Profit	$467.0M	$465.5M	$448.5M
YoY Change	4.12%	-198.39%	12.83%
Interest Expense	-$56.40M	-$45.70M	-$53.10M
YoY Change	6.21%	-480.83%	50.0%
% of Operating Profit	-12.08%	-9.82%	-11.84%
Other Income/Expense, Net	-$54.00M	-$21.10M	$17.30M
YoY Change	-412.14%	379.55%	-160.7%
Pretax Income	$412.8M	$407.7M	$465.8M
YoY Change	-11.38%	-187.58%	26.23%
Income Tax	$100.8M	$133.6M	$146.1M
% Of Pretax Income	24.42%	32.77%	31.37%
Net Earnings	$310.0M	$25.50M	$317.3M
YoY Change	-2.3%	-105.95%	24.29%
Net Earnings / Revenue	28.68%	2.19%	29.85%
Basic Earnings Per Share	$1.62	$0.13	$1.66
Diluted Earnings Per Share	$1.59	$0.13	$1.63
COMMON SHARES
Basic Shares Outstanding	191.8M shares	191.0M shares	191.1M shares
Diluted Shares Outstanding	194.5M shares		194.1M shares

Balance Sheet

Concept	2018 Q3	2017 Q4	2017 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$1.146B	$1.183B	$1.071B
YoY Change	7.0%	-46.83%	-47.96%
Cash & Equivalents	$1.035B	$1.072B	$962.8M
Short-Term Investments	$111.0M	$112.0M	$108.0M
Other Short-Term Assets	$238.9M	$250.1M	$200.5M
YoY Change	19.15%	77.63%	57.13%
Inventory
Prepaid Expenses	$78.90M	$91.70M	$89.90M
Receivables	$1.132B	$1.147B	$1.007B
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$2.516B	$2.581B	$2.279B
YoY Change	10.41%	-20.67%	-24.46%
LONG-TERM ASSETS
Property, Plant & Equipment	$311.1M	$325.1M	$332.1M
YoY Change	-6.32%	-0.25%	0.76%
Goodwill	$3.661B	$3.753B	$3.722B
YoY Change	-1.63%	266.65%	257.62%
Intangibles	$1.518B	$1.632B	$1.633B
YoY Change	-7.07%	450.47%	430.57%
Long-Term Investments	$144.0M	$121.0M	$110.0M
YoY Change	30.91%	105.08%	37.5%
Other Assets	$243.6M	$159.9M	$168.5M
YoY Change	44.57%	42.51%	8.99%
Total Long-Term Assets	$5.923B	$5.710B	$6.026B
YoY Change	-1.71%	246.92%	200.94%
TOTAL ASSETS
Total Short-Term Assets	$2.516B	$2.581B	$2.279B
Total Long-Term Assets	$5.923B	$5.710B	$6.026B
Total Assets	$8.439B	$8.594B	$8.305B
YoY Change	1.62%	61.32%	65.46%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$16.20M	$21.80M	$29.20M
YoY Change	-44.52%	-23.24%	4.29%
Accrued Expenses	$332.0M	$530.0M	$382.0M
YoY Change	-13.09%	53.18%	45.25%
Deferred Revenue	$771.5M	$883.6M
YoY Change
Short-Term Debt	$25.00M	$130.0M	$315.0M
YoY Change	-92.06%
Long-Term Debt Due	$445.6M	$299.5M	$299.3M
YoY Change	48.88%	-0.17%	-0.2%
Total Short-Term Liabilities	$1.824B	$2.063B	$1.983B
YoY Change	-8.02%	-15.03%	41.37%
LONG-TERM LIABILITIES
Long-Term Debt	$4.484B	$5.111B	$5.107B
YoY Change	-12.2%	66.87%	63.79%
Other Long-Term Liabilities	$574.9M	$664.0M	$447.3M
YoY Change	28.53%	56.16%	8.33%
Total Long-Term Liabilities	$5.059B	$5.775B	$5.555B
YoY Change	-8.92%	65.56%	57.31%
TOTAL LIABILITIES
Total Short-Term Liabilities	$1.824B	$2.063B	$1.983B
Total Long-Term Liabilities	$5.059B	$5.775B	$5.555B
Total Liabilities	$7.833B	$8.709B	$8.462B
YoY Change	-7.43%	37.05%	57.36%
SHAREHOLDERS EQUITY
Retained Earnings	$8.429B	$7.465B	$7.513B
YoY Change	12.19%	11.61%	3.47%
Common Stock	$573.1M	$532.0M	$495.6M
YoY Change	15.64%	11.48%	10.04%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$8.260B	$8.153B	$8.124B
YoY Change	1.68%	1.54%	1.88%
Treasury Stock Shares	151.3M shares	151.9M shares	151.8M shares
Shareholders Equity	$400.1M	-$327.7M	-$369.1M
YoY Change
Total Liabilities & Shareholders Equity	$8.439B	$8.594B	$8.305B
YoY Change	1.62%	61.32%	65.46%

Cashflow Statement

Concept	2018 Q3	2017 Q4	2017 Q3
OPERATING ACTIVITIES
Net Income	$310.0M	$25.50M	$317.3M
YoY Change	-2.3%	-105.95%	24.29%
Depreciation, Depletion And Amortization	$46.10M	$49.90M	$43.00M
YoY Change	7.21%	51.67%	31.5%
Cash From Operating Activities	$307.3M	$411.9M	$390.4M
YoY Change	-21.29%	11.26%	8.38%
INVESTING ACTIVITIES
Capital Expenditures	-$25.00M	-$21.20M	-$26.60M
YoY Change	-6.02%	-30.26%	-12.79%
Acquisitions
YoY Change
Other Investing Activities	-$43.50M	$8.600M	-$3.421B
YoY Change	-98.73%	-93.62%	-9762.99%
Cash From Investing Activities	-$68.50M	-$12.60M	-$3.447B
YoY Change	-98.01%	-112.07%	-70453.06%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-512.6M	-296.6M	719.1M
YoY Change	-171.28%	131.9%	-346.1%
NET CHANGE
Cash From Operating Activities	307.3M	411.9M	390.4M
Cash From Investing Activities	-68.50M	-12.60M	-3.447B
Cash From Financing Activities	-512.6M	-296.6M	719.1M
Net Change In Cash	-273.8M	102.7M	-2.338B
YoY Change	-88.29%	-70.38%	-3306.86%
FREE CASH FLOW
Cash From Operating Activities	$307.3M	$411.9M	$390.4M
Capital Expenditures	-$25.00M	-$21.20M	-$26.60M
Free Cash Flow	$332.3M	$433.1M	$417.0M
YoY Change	-20.31%	8.11%	6.73%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
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CY2017Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	5111100000	USD
CY2017Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	341600000	USD
CY2017Q4	us-gaap	Liability For Uncertain Tax Positions Noncurrent LiabilityForUncertainTaxPositionsNoncurrent	389100000	USD
CY2017Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1071500000	USD
CY2017Q4	us-gaap	Short Term Investments ShortTermInvestments	111800000	USD
CY2017Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	664000000	USD
CY2017Q4	us-gaap	Liabilities Liabilities	8709100000	USD
CY2017Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2017Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	528600000	USD
CY2017Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	7465400000	USD
CY2017Q4	us-gaap	Treasury Stock Value TreasuryStockValue	8152900000	USD
CY2017Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-172200000	USD
CY2017Q4	us-gaap	Stockholders Equity StockholdersEquity	-327700000	USD
CY2017Q4	us-gaap	Minority Interest MinorityInterest	212800000	USD
CY2017Q4	us-gaap	Derivative Assets DerivativeAssets	13000000	USD
CY2017Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	8594200000	USD
CY2017Q4	us-gaap	Preferred Stock Value PreferredStockValue		USD
CY2017Q4	us-gaap	Common Stock Value CommonStockValue	3400000	USD
CY2017Q4	us-gaap	Money Market Funds At Carrying Value MoneyMarketFundsAtCarryingValue	42200000	USD
CY2017Q4	us-gaap	Trading Securities Equity TradingSecuritiesEquity	21100000	USD
CY2017Q4	us-gaap	Other Assets Current OtherAssetsCurrent	250100000	USD
CY2017Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	1631600000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Net Noncurrent DeferredTaxAssetsNetNoncurrent	143800000	USD
CY2017Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	159900000	USD
CY2017Q4	us-gaap	Accounts Payable And Accrued Liabilities Current AccountsPayableAndAccruedLiabilitiesCurrent	750300000	USD
CY2017Q4	us-gaap	Commercial Paper CommercialPaper	129900000	USD
CY2017Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	299500000	USD
CY2017Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	883600000	USD
CY2017Q4	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	140000000	USD
CY2017Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	151932157	shares
CY2017Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	342902272	shares
CY2017Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	1000000000	shares
CY2017Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2017Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2017Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	10000000	shares
CY2017Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	36600000	USD
CY2017Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	706000000	USD
CY2017Q4	mco	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Hedging Activities Effect Net Of Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromHedgingActivitiesEffectNetOfTax	-300000	USD
CY2017Q4	us-gaap	Hedged Asset Fair Value Hedge HedgedAssetFairValueHedge	13000000	USD
CY2017	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	2622600000	USD
CY2017	us-gaap	Goodwill Translation And Purchase Accounting Adjustments GoodwillTranslationAndPurchaseAccountingAdjustments	107000000	USD
CY2017Q4	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	76300000	USD
CY2017Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	5500000	USD
CY2017Q4	us-gaap	Liabilities Fair Value Disclosure LiabilitiesFairValueDisclosure	5500000	USD
CY2017Q4	us-gaap	Prepaid Taxes PrepaidTaxes	94900000	USD
CY2017Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	91700000	USD
CY2017Q4	us-gaap	Other Assets Miscellaneous Current OtherAssetsMiscellaneousCurrent	47600000	USD
CY2017Q4	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	9400000	USD
CY2017Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	99100000	USD
CY2017Q4	us-gaap	Deposit Assets DepositAssets	12300000	USD
CY2017Q4	us-gaap	Business Combination Indemnification Assets Amount As Of Acquisition Date BusinessCombinationIndemnificationAssetsAmountAsOfAcquisitionDate	17000000	USD
CY2017Q4	us-gaap	Long Term Investments LongTermInvestments	22100000	USD
CY2017Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Current Liabilities PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities	5900000	USD
CY2017Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	81200000	USD
CY2017Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	244500000	USD
CY2017Q4	us-gaap	Deferred Rent Credit Noncurrent DeferredRentCreditNoncurrent	103100000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	54700000	USD
CY2017Q4	us-gaap	Loss Contingency Accrual At Carrying Value LossContingencyAccrualAtCarryingValue	1300000	USD
CY2017Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	129600000	USD
CY2017Q4	us-gaap	Accrued Bonuses Current AccruedBonusesCurrent	246700000	USD
CY2017Q4	us-gaap	Self Insurance Reserve Current SelfInsuranceReserveCurrent	8100000	USD
CY2017Q4	us-gaap	Dividends Payable Current DividendsPayableCurrent	6200000	USD
CY2017Q4	us-gaap	Accrued Professional Fees Current AccruedProfessionalFeesCurrent	47100000	USD
CY2017Q4	us-gaap	Interest Payable Current InterestPayableCurrent	73900000	USD
CY2017Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	21800000	USD
CY2017Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	79200000	USD
CY2017Q4	us-gaap	Self Insurance Reserve SelfInsuranceReserve	8100000	USD
CY2016Q4	us-gaap	Self Insurance Reserve SelfInsuranceReserve	11100000	USD
CY2017	us-gaap	Increase Decrease In Self Insurance Reserve IncreaseDecreaseInSelfInsuranceReserve	9600000	USD
CY2017	us-gaap	Payments For Losses And Loss Adjustment Expense PaymentsForLossesAndLossAdjustmentExpense	12600000	USD
CY2017Q4	us-gaap	Debt Instrument Face Amount DebtInstrumentFaceAmount	5580400000	USD
CY2017Q4	us-gaap	Interest Rate Derivatives At Fair Value Net InterestRateDerivativesAtFairValueNet	3000000	USD
CY2017Q4	us-gaap	Debt Instrument Unamortized Discount Premium Net DebtInstrumentUnamortizedDiscountPremiumNet	9400000	USD
CY2017Q4	us-gaap	Unamortized Debt Issuance Expense UnamortizedDebtIssuanceExpense	27500000	USD
CY2017Q4	us-gaap	Debt Longterm And Shortterm Combined Amount DebtLongtermAndShorttermCombinedAmount	5540500000	USD
CY2017Q4	us-gaap	Debt Current DebtCurrent	429400000	USD
CY2017Q4	us-gaap	Long Term Debt LongTermDebt	5410600000	USD
CY2017Q4	us-gaap	Debt Instrument Fair Value DebtInstrumentFairValue	5702100000	USD
CY2017Q4	us-gaap	Accrued Royalties Current AccruedRoyaltiesCurrent	26400000	USD
CY2016Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	2051500000	USD
CY2016Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-364900000	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35	pure
CY2017Q4	us-gaap	Goodwill Gross GoodwillGross	3765400000	USD
CY2017Q4	us-gaap	Goodwill Goodwill	3753200000	USD
CY2016Q4	us-gaap	Goodwill Gross GoodwillGross	1035800000	USD
CY2016Q4	us-gaap	Goodwill Impaired Accumulated Impairment Loss GoodwillImpairedAccumulatedImpairmentLoss	12200000	USD
CY2016Q4	us-gaap	Goodwill Goodwill	1023600000	USD
CY2017Q4	us-gaap	Goodwill Impaired Accumulated Impairment Loss GoodwillImpairedAccumulatedImpairmentLoss	12200000	USD
CY2017Q4	us-gaap	Interest Rate Derivative Liabilities At Fair Value InterestRateDerivativeLiabilitiesAtFairValue	3500000	USD
CY2017Q4	us-gaap	Income Tax Examination Liability Refund Adjustment From Settlement With Taxing Authority IncomeTaxExaminationLiabilityRefundAdjustmentFromSettlementWithTaxingAuthority	232200000	USD
CY2017Q4	us-gaap	Other Accrued Liabilities Noncurrent OtherAccruedLiabilitiesNoncurrent	24700000	USD
CY2017Q4	mco	Customer Billings And Payments Received In Advance CustomerBillingsAndPaymentsReceivedInAdvance	22200000	USD
CY2016Q4	us-gaap	Minority Interest MinorityInterest	197700000	USD
CY2017	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	7100000	USD
CY2017	us-gaap	Dividends Dividends	3300000	USD
CY2017	us-gaap	Minority Interest Period Increase Decrease MinorityInterestPeriodIncreaseDecrease	1000000	USD
CY2017	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToNoncontrollingInterest	13000000	USD
CY2017	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToNoncontrollingInterest	-700000	USD
	dei	Document Type DocumentType	10-Q
	dei	Document Period End Date DocumentPeriodEndDate	2018-09-30
	dei	Amendment Flag AmendmentFlag	false
	dei	Entity Registrant Name EntityRegistrantName	MOODYS CORP /DE/
	dei	Entity Central Index Key EntityCentralIndexKey	0001059556
	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2018
	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q3
CY2018Q3	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	191600000	shares
	dei	Trading Symbol TradingSymbol	MCO
	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2018Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1080800000	USD
CY2018Q3	us-gaap	Direct Operating Costs DirectOperatingCosts	306300000	USD
CY2017Q3	us-gaap	Depreciation And Amortization DepreciationAndAmortization	43000000	USD
CY2017Q3	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	10100000	USD
CY2017Q3	us-gaap	Operating Expenses OperatingExpenses	614400000	USD
CY2017Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	448500000	USD
CY2017Q3	us-gaap	Interest Income Expense Nonoperating Net InterestIncomeExpenseNonoperatingNet	-53100000	USD
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	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-142200000	USD
CY2018Q3	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	260300000	USD
CY2018Q3	us-gaap	Depreciation And Amortization DepreciationAndAmortization	46100000	USD
CY2018Q3	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	1300000	USD
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CY2018Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	466800000	USD
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CY2018Q3	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-54000000	USD
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CY2018Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	100800000	USD
CY2018Q3	us-gaap	Profit Loss ProfitLoss	312000000	USD
CY2018Q3	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	1800000	USD
CY2018Q3	us-gaap	Net Income Loss NetIncomeLoss	310200000	USD
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CY2017Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	146100000	USD
CY2017Q3	us-gaap	Profit Loss ProfitLoss	319700000	USD
CY2017Q3	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	2400000	USD
CY2017Q3	us-gaap	Net Income Loss NetIncomeLoss	317300000	USD
CY2017Q3	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	500000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	3382600000	USD
	us-gaap	Direct Operating Costs DirectOperatingCosts	941400000	USD
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	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	4100000	USD
	us-gaap	Operating Expenses OperatingExpenses	1891000000	USD
	us-gaap	Operating Income Loss OperatingIncomeLoss	1491600000	USD
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	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	18300000	USD
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	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	282700000	USD
	us-gaap	Profit Loss ProfitLoss	1066700000	USD
	us-gaap	Net Income Loss NetIncomeLoss	1059300000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	3038600000	USD
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	us-gaap	Interest Income Expense Nonoperating Net InterestIncomeExpenseNonoperatingNet	-150200000	USD
	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	3200000	USD
	mco	Realized Gain On Foreign Currency Purchase Price Hedge Derivatives RealizedGainOnForeignCurrencyPurchasePriceHedgeDerivatives	111100000	USD
	us-gaap	Gain Loss On Sale Of Stock In Subsidiary Or Equity Method Investee GainLossOnSaleOfStockInSubsidiaryOrEquityMethodInvestee	59700000	USD
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	5.53
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	5.1
CY2018Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.59
CY2017Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.63
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	5.45
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	5.02
CY2018Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.44
CY2017Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.38
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.32
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.76
CY2017Q3	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Net Of Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax	1300000	USD
	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	23800000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	1379100000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	399900000	USD
	us-gaap	Profit Loss ProfitLoss	979200000	USD
	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	4100000	USD
	us-gaap	Net Income Loss NetIncomeLoss	975100000	USD
CY2018Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.62
CY2017Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.66
CY2018Q3	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossBeforeReclassificationAndTax	-46500000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Foreign Currency Translation Gain Loss Arising During Period Tax OtherComprehensiveIncomeForeignCurrencyTranslationGainLossArisingDuringPeriodTax	1800000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	-48300000	USD
CY2017Q3	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossBeforeReclassificationAndTax	45400000	USD
CY2017Q3	us-gaap	Other Comprehensive Income Foreign Currency Translation Gain Loss Arising During Period Tax OtherComprehensiveIncomeForeignCurrencyTranslationGainLossArisingDuringPeriodTax	-6400000	USD
CY2017Q3	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	51800000	USD
	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossBeforeReclassificationAndTax	-175200000	USD
	us-gaap	Other Comprehensive Income Foreign Currency Translation Gain Loss Arising During Period Tax OtherComprehensiveIncomeForeignCurrencyTranslationGainLossArisingDuringPeriodTax	7400000	USD
	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	-182600000	USD
	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossBeforeReclassificationAndTax	94900000	USD
	us-gaap	Other Comprehensive Income Foreign Currency Translation Gain Loss Arising During Period Tax OtherComprehensiveIncomeForeignCurrencyTranslationGainLossArisingDuringPeriodTax	-19500000	USD
	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	114400000	USD
CY2017Q3	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Reclassification Adjustments And Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeReclassificationAdjustmentsAndTax	500000	USD
CY2017Q3	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Reclassification Adjustments Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeReclassificationAdjustmentsNetOfTax	500000	USD
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Reclassification Adjustments And Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeReclassificationAdjustmentsAndTax	1600000	USD
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Reclassification Adjustments Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeReclassificationAdjustmentsNetOfTax	1600000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Before Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax	1100000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditTax	300000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Net Of Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax	800000	USD
CY2017Q3	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Before Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax	2100000	USD
CY2017Q3	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditTax	800000	USD
	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Before Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax	3500000	USD
	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditTax	1000000	USD
	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Net Of Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax	2500000	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Net Unamortized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax	1600000	USD
	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax	400000	USD
	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax	1200000	USD
	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Before Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax	6400000	USD
	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditTax	2500000	USD
	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Net Of Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax	3900000	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Net Unamortized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax	7900000	USD
	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax	3000000	USD
	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax	4900000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	-45500000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	2100000	USD
CY2017Q3	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	46800000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-177700000	USD
	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	889000000	USD
CY2018Q3	us-gaap	Accounts Payable And Accrued Liabilities Current AccountsPayableAndAccruedLiabilitiesCurrent	581600000	USD
CY2017Q3	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	-5200000	USD
CY2017Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	52000000	USD
CY2018Q3	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	264400000	USD
CY2018Q3	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	-8400000	USD
CY2018Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	272800000	USD
CY2017Q3	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	371700000	USD
CY2017Q3	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	3100000	USD
CY2017Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	368600000	USD
	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	-168500000	USD
	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	9200000	USD
	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	-2700000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	891700000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	122000000	USD
	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	1101200000	USD
	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	19600000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	1081600000	USD
	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	106900000	USD
	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	-15100000	USD
CY2018Q3	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	1131800000	USD
CY2018Q3	us-gaap	Other Assets Current OtherAssetsCurrent	238900000	USD
CY2018Q3	us-gaap	Assets Current AssetsCurrent	2516200000	USD
CY2018Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	311100000	USD
CY2018Q3	us-gaap	Goodwill Goodwill	3661300000	USD
CY2018Q3	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	1517600000	USD
CY2018Q3	us-gaap	Deferred Tax Assets Net Noncurrent DeferredTaxAssetsNetNoncurrent	189300000	USD
CY2018Q3	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	243600000	USD
CY2018Q3	us-gaap	Assets Assets	8439100000	USD
CY2018Q3	us-gaap	Commercial Paper CommercialPaper	24900000	USD
CY2018Q3	us-gaap	Long Term Debt Current LongTermDebtCurrent	445600000	USD
CY2018Q3	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	771500000	USD
CY2018Q3	us-gaap	Liabilities Current LiabilitiesCurrent	1823600000	USD
CY2018Q3	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	123900000	USD
CY2018Q3	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	4484000000	USD
CY2018Q3	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	354800000	USD
CY2018Q3	us-gaap	Liability For Uncertain Tax Positions Noncurrent LiabilityForUncertainTaxPositionsNoncurrent	471800000	USD
CY2018Q3	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	574900000	USD
CY2018Q3	us-gaap	Liabilities Liabilities	7833000000	USD
CY2018Q3	us-gaap	Common Stock Value CommonStockValue	3400000	USD
CY2018Q3	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	569700000	USD
CY2018Q3	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	8429100000	USD
CY2018Q3	us-gaap	Treasury Stock Value TreasuryStockValue	8260100000	USD
CY2018Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-342000000	USD
CY2018Q3	us-gaap	Stockholders Equity StockholdersEquity	400100000	USD
CY2018Q3	us-gaap	Minority Interest MinorityInterest	206000000	USD
CY2018Q3	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	606100000	USD
CY2018Q3	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	8439100000	USD
CY2018Q3	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2018Q3	us-gaap	Preferred Stock Value PreferredStockValue		USD
CY2018Q3	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	36900000	USD
CY2018Q3	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	767900000	USD
CY2018Q3	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2018Q3	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	10000000	shares
	us-gaap	Proceeds From Sale Maturity And Collection Of Shortterm Investments ProceedsFromSaleMaturityAndCollectionOfShorttermInvestments	183800000	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	62900000	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	69400000	USD
	us-gaap	Payments To Acquire Short Term Investments PaymentsToAcquireShortTermInvestments	142500000	USD
	us-gaap	Payments To Acquire Short Term Investments PaymentsToAcquireShortTermInvestments	124000000	USD
	us-gaap	Proceeds From Sale Maturity And Collection Of Shortterm Investments ProceedsFromSaleMaturityAndCollectionOfShorttermInvestments	120900000	USD
CY2018Q3	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2018Q3	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	342902272	shares
CY2018Q3	us-gaap	Treasury Stock Shares TreasuryStockShares	151293579	shares
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-75300000	USD
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	161400000	USD
	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-22500000	USD
	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	9800000	USD
	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-36600000	USD
	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	16200000	USD
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	7400000	USD
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-11400000	USD
	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-176500000	USD
	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-827200000	USD
	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	-35300000	USD
	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	-19300000	USD
	mco	Unrecognized Tax Benefits And Other Non Current Tax Liabilities Period Increase Decrease UnrecognizedTaxBenefitsAndOtherNonCurrentTaxLiabilitiesPeriodIncreaseDecrease	42800000	USD
	mco	Unrecognized Tax Benefits And Other Non Current Tax Liabilities Period Increase Decrease UnrecognizedTaxBenefitsAndOtherNonCurrentTaxLiabilitiesPeriodIncreaseDecrease	18400000	USD
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-33100000	USD
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	25400000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1084600000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	349800000	USD
	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	35000000	USD
	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	3511000000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-113800000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-3407400000	USD
	us-gaap	Proceeds From Notes Payable ProceedsFromNotesPayable	299600000	USD
	us-gaap	Proceeds From Notes Payable ProceedsFromNotesPayable	2291900000	USD
	us-gaap	Repayments Of Notes Payable RepaymentsOfNotesPayable	750000000	USD
	us-gaap	Repayments Of Notes Payable RepaymentsOfNotesPayable	300000000	USD
	us-gaap	Proceeds From Issuance Of Commercial Paper ProceedsFromIssuanceOfCommercialPaper	434400000	USD
	us-gaap	Proceeds From Issuance Of Commercial Paper ProceedsFromIssuanceOfCommercialPaper	1437500000	USD
	us-gaap	Repayments Of Commercial Paper RepaymentsOfCommercialPaper	539200000	USD
	us-gaap	Repayments Of Commercial Paper RepaymentsOfCommercialPaper	1123200000	USD
	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	42900000	USD
	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	49300000	USD
	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	62000000	USD
	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	48300000	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	147200000	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	163600000	USD
	us-gaap	Payments Of Dividends PaymentsOfDividends	252900000	USD
	us-gaap	Payments Of Dividends PaymentsOfDividends	217800000	USD
	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	4000000	USD
	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	3200000	USD
	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	6200000	USD
	mco	Payments Of Debt Issuance And Debt Extinguishment Or Debt Prepayment Costs PaymentsOfDebtIssuanceAndDebtExtinguishmentOrDebtPrepaymentCosts	1800000	USD
	mco	Payments Of Debt Issuance And Debt Extinguishment Or Debt Prepayment Costs PaymentsOfDebtIssuanceAndDebtExtinguishmentOrDebtPrepaymentCosts	26800000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-980200000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	1889600000	USD
	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-27300000	USD
	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	79300000	USD
	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-36700000	USD
	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-1088700000	USD
CY2017Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	962800000	USD
CY2017Q3	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	10300000	USD
CY2018Q3	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	11500000	USD
	us-gaap	Derivatives Methods Of Accounting Hedging Derivatives DerivativesMethodsOfAccountingHedgingDerivatives	<div><p style='text-align:left;margin-top:0pt;margin-bottom:10pt;line-height:13.8pt;' ><font style='font-family:Times New Roman;font-size:10pt;font-weight:bold;margin-left:0pt;' >Derivative Instruments an</font><font style='font-family:Times New Roman;font-size:10pt;font-weight:bold;' >d Hedging Activities </font></p><p style='text-align:left;margin-top:0pt;margin-bottom:10pt;line-height:13.8pt;' ><font style='font-family:Times New Roman;font-size:10pt;margin-left:36pt;' >Based on the Company’s risk management policy, from time to time the Company may use derivative financial instruments to reduce exposure to changes in foreign exchange rates and interest rates. The Company does not enter into derivati</font><font style='font-family:Times New Roman;font-size:10pt;' >ve financial instruments for speculative purposes. All derivative financial instruments are recorded on the balance sheet at their respective fair values. The changes in the value of derivatives that qualify as fair value hedges are recorded in the same in</font><font style='font-family:Times New Roman;font-size:10pt;' >come statement line item in earnings in which the corresponding adjustment to the carrying value of the hedged item is presented. The entire change in the fair value of derivatives that qualify as cash flow hedges is recorded to OCI and such amounts are re</font><font style='font-family:Times New Roman;font-size:10pt;' >classified from AOCI to the same income statement line in earnings in the same period or periods during which the hedged transaction affects income. </font><font style='font-family:Times New Roman;font-size:10pt;' >Effective with the Company early adoption of ASC 2017-12, the Company changed the method by which it assess</font><font style='font-family:Times New Roman;font-size:10pt;' >es effectiveness for net investment hedges from the forward-method to the spot-method. The Company considers the spot-method an improved method of assessing hedge effectiveness, as spot rate changes relating to the hedging instrument’s notional amount per</font><font style='font-family:Times New Roman;font-size:10pt;' >fectly offset the currency translation adjustment on the hedged net investment in the Company’s foreign subsidiaries. </font><font style='font-family:Times New Roman;font-size:10pt;' >The entire change in the fair value of derivatives that qualify as net investment hedges is </font><font style='font-family:Times New Roman;font-size:10pt;' >initially </font><font style='font-family:Times New Roman;font-size:10pt;' >recorded to OCI. Those changes in fa</font><font style='font-family:Times New Roman;font-size:10pt;' >ir value attributable to components included in the assessment of hedge effectiveness in a net investment hedge are recorded in the currency translation adjustment component of OCI and remain in AOCI until the period in which the hedged item affects earnin</font><font style='font-family:Times New Roman;font-size:10pt;' >gs. Those changes in fair value attributable to components excluded from the assessment of hedge effectiveness in a net investment hedge are recorded to OCI and amortized to earnings using a systematic and rational method over the duration of the hedge. An</font><font style='font-family:Times New Roman;font-size:10pt;' >y changes in the fair value of derivatives that the Company does not designate as hedging instruments under Topic 815 of the ASC are recorded in the consolidated statements of operations in the period in which they occur.</font><font style='font-family:Times New Roman;font-size:10pt;' > Refer to Note 9 for further inform</font><font style='font-family:Times New Roman;font-size:10pt;' >ation regarding the Company’s derivative financial instruments and hedging activities</font><font style='font-family:Times New Roman;font-size:10pt;' >.</font></p></div>
CY2018Q3	us-gaap	Share Based Compensation ShareBasedCompensation	30500000	USD
CY2017Q3	us-gaap	Share Based Compensation ShareBasedCompensation	31800000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	100000000	USD
	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	26000000	USD
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0281	pure
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	45.87
	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	28800000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	88900000	USD
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.0105	pure
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.256	pure
	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P6Y2M12D
	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	36200000	USD
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	94900000	USD
	us-gaap	Employee Service Share Based Compensation Tax Benefit From Exercise Of Stock Options EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions	23200000	USD
	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	44000000	USD
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	75700000	USD
	us-gaap	Employee Service Share Based Compensation Tax Benefit From Exercise Of Stock Options EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions	26900000	USD
	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	800000	shares
	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	1000000	shares
	us-gaap	Income Taxes Paid IncomeTaxesPaid	337000000	USD
	us-gaap	Income Taxes Paid IncomeTaxesPaid	194700000	USD
CY2018Q3	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	2700000	shares
CY2017Q3	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	3000000	shares
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	2700000	shares
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	3000000	shares
CY2018Q3	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	300000	shares
CY2017Q3	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	500000	shares
	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	400000	shares
	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	600000	shares
CY2018Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	194500000	shares
CY2017Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	194100000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	194400000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	194100000	shares
CY2018Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	191800000	shares
CY2017Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	191100000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	191700000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	191100000	shares
CY2018Q3	us-gaap	Trading Securities Equity TradingSecuritiesEquity	34700000	USD
	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	23800000	USD
	us-gaap	Goodwill Translation And Purchase Accounting Adjustments GoodwillTranslationAndPurchaseAccountingAdjustments	-115700000	USD
CY2018Q3	us-gaap	Goodwill Impaired Accumulated Impairment Loss GoodwillImpairedAccumulatedImpairmentLoss	12200000	USD
CY2018Q3	us-gaap	Goodwill Gross GoodwillGross	3673500000	USD
CY2018Q3	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	24600000	USD
CY2017Q3	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	18800000	USD
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	75400000	USD
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	35900000	USD
CY2018Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Remainder Of Fiscal Year FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear	25100000	USD
CY2018Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	95500000	USD
CY2018Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	93100000	USD
CY2018Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	92900000	USD
CY2018Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	92200000	USD
CY2018Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	1118800000	USD
CY2018Q3	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	1517600000	USD
	us-gaap	Goodwill And Intangible Asset Impairment GoodwillAndIntangibleAssetImpairment	0	USD
	us-gaap	Goodwill And Intangible Asset Impairment GoodwillAndIntangibleAssetImpairment	0	USD
CY2018Q3	mco	Stable Net Asset Value Public Traded Funds StableNetAssetValuePublicTradedFunds	1	USD
CY2018Q3	us-gaap	Derivative Assets DerivativeAssets	10300000	USD
CY2018Q3	us-gaap	Money Market Funds At Carrying Value MoneyMarketFundsAtCarryingValue	32300000	USD
CY2018Q3	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	77300000	USD
CY2018Q3	us-gaap	Derivative Liabilities DerivativeLiabilities	38300000	USD
CY2018Q3	us-gaap	Liabilities Fair Value Disclosure LiabilitiesFairValueDisclosure	38300000	USD
	us-gaap	Increase Decrease In Self Insurance Reserve IncreaseDecreaseInSelfInsuranceReserve	4900000	USD
	us-gaap	Payments For Losses And Loss Adjustment Expense PaymentsForLossesAndLossAdjustmentExpense	100000	USD
CY2018Q3	us-gaap	Self Insurance Reserve SelfInsuranceReserve	13100000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	3382600000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	3038600000	USD
CY2017Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1062900000	USD
CY2018Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1080800000	USD
	mco	Percentage Of Revenues PercentageOfRevenues	1	pure
CY2018Q3	mco	Percentage Of Revenues PercentageOfRevenues	1	pure
CY2018Q3	us-gaap	Contract With Customer Liability Change In Timeframe Performance Obligation Satisfied Revenue Recognized ContractWithCustomerLiabilityChangeInTimeframePerformanceObligationSatisfiedRevenueRecognized	1080800000	USD
	us-gaap	Contract With Customer Liability Change In Timeframe Performance Obligation Satisfied Revenue Recognized ContractWithCustomerLiabilityChangeInTimeframePerformanceObligationSatisfiedRevenueRecognized	3382600000	USD
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod	200000	shares
CY2018Q3	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.244	pure
CY2017Q3	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.314	pure
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.21	pure
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.29	pure
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	-6800000	USD
	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	22000000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	-300000	USD
	us-gaap	Derivative Instruments Gain Loss Recognized In Income Ineffective Portion And Amount Excluded From Effectiveness Testing Net DerivativeInstrumentsGainLossRecognizedInIncomeIneffectivePortionAndAmountExcludedFromEffectivenessTestingNet	6200000	USD
CY2017Q3	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	-6700000	USD
CY2017Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	-2600000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	-100000	USD
CY2018Q3	us-gaap	Derivative Instruments Gain Loss Recognized In Income Ineffective Portion And Amount Excluded From Effectiveness Testing Net DerivativeInstrumentsGainLossRecognizedInIncomeIneffectivePortionAndAmountExcludedFromEffectivenessTestingNet	4100000	USD
CY2018Q3	mco	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Hedging Activities Effect Net Of Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromHedgingActivitiesEffectNetOfTax	21400000	USD
CY2018Q3	us-gaap	Hedged Asset Fair Value Hedge HedgedAssetFairValueHedge	10300000	USD
CY2018Q3	us-gaap	Hedged Liability Fair Value Hedge HedgedLiabilityFairValueHedge	619000000	USD
CY2017Q4	us-gaap	Hedged Liability Fair Value Hedge HedgedLiabilityFairValueHedge	605900000	USD
CY2018Q3	us-gaap	Capitalized Contract Cost Net Current CapitalizedContractCostNetCurrent	39300000	USD
CY2017Q4	us-gaap	Capitalized Contract Cost Net Current CapitalizedContractCostNetCurrent	15900000	USD
CY2018Q3	us-gaap	Prepaid Taxes PrepaidTaxes	77100000	USD
CY2018Q3	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	78900000	USD
CY2018Q3	us-gaap	Other Assets Miscellaneous Current OtherAssetsMiscellaneousCurrent	43600000	USD
CY2018Q3	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	98300000	USD
CY2018Q3	us-gaap	Deposit Assets DepositAssets	13000000	USD
CY2018Q3	us-gaap	Business Combination Indemnification Assets Amount As Of Acquisition Date BusinessCombinationIndemnificationAssetsAmountAsOfAcquisitionDate	15800000	USD
CY2018Q3	us-gaap	Long Term Investments LongTermInvestments	45800000	USD
CY2018Q3	us-gaap	Capitalized Contract Cost Net Noncurrent CapitalizedContractCostNetNoncurrent	68000000	USD
CY2018Q3	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	2700000	USD
CY2018Q3	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	91900000	USD
CY2018Q3	us-gaap	Accrued Bonuses Current AccruedBonusesCurrent	133700000	USD
CY2018Q3	mco	Customer Billings And Payments Received In Advance CustomerBillingsAndPaymentsReceivedInAdvance	23200000	USD
CY2018Q3	us-gaap	Self Insurance Reserve Current SelfInsuranceReserveCurrent	13100000	USD
CY2018Q3	us-gaap	Dividends Payable Current DividendsPayableCurrent	5600000	USD
CY2018Q3	us-gaap	Accrued Professional Fees Current AccruedProfessionalFeesCurrent	50700000	USD
CY2018Q3	us-gaap	Interest Payable Current InterestPayableCurrent	36200000	USD
CY2018Q3	us-gaap	Accounts Payable Current AccountsPayableCurrent	16200000	USD
CY2018Q3	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	79900000	USD
CY2018Q3	us-gaap	Pension And Other Postretirement Defined Benefit Plans Current Liabilities PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities	5900000	USD
CY2018Q3	us-gaap	Accrued Royalties Current AccruedRoyaltiesCurrent	13500000	USD
CY2018Q3	us-gaap	Foreign Currency Contracts Liability Fair Value Disclosure ForeignCurrencyContractsLiabilityFairValueDisclosure	20500000	USD
CY2018Q3	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	91200000	USD
CY2018Q3	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	252700000	USD
CY2018Q3	us-gaap	Deferred Rent Credit Noncurrent DeferredRentCreditNoncurrent	96600000	USD
CY2018Q3	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	65000000	USD
CY2018Q3	us-gaap	Loss Contingency Accrual At Carrying Value LossContingencyAccrualAtCarryingValue	1300000	USD
CY2018Q3	us-gaap	Income Tax Examination Liability Refund Adjustment From Settlement With Taxing Authority IncomeTaxExaminationLiabilityRefundAdjustmentFromSettlementWithTaxingAuthority	122600000	USD
CY2018Q3	us-gaap	Interest Rate Derivative Liabilities At Fair Value InterestRateDerivativeLiabilitiesAtFairValue	14000000	USD
	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Expense UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense	9400000	USD
	us-gaap	Interest Paid InterestPaid	169700000	USD
	us-gaap	Interest Paid InterestPaid	136200000	USD
CY2018Q3	us-gaap	Other Accrued Liabilities Noncurrent OtherAccruedLiabilitiesNoncurrent	22700000	USD
CY2018Q3	us-gaap	Capitalized Contract Cost Amortization Period CapitalizedContractCostAmortizationPeriod	P7Y
CY2018Q3	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-3900000	USD
CY2017Q3	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-6700000	USD
	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-3600000	USD
	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-12500000	USD
CY2018Q3	mco	Pension Expense Net Periodic Pension Costs Other PensionExpenseNetPeriodicPensionCostsOther	2600000	USD
CY2017Q3	mco	Pension Expense Net Periodic Pension Costs Other PensionExpenseNetPeriodicPensionCostsOther	1900000	USD
	mco	Pension Expense Net Periodic Pension Costs Other PensionExpenseNetPeriodicPensionCostsOther	7800000	USD
	mco	Pension Expense Net Periodic Pension Costs Other PensionExpenseNetPeriodicPensionCostsOther	5700000	USD
CY2018Q3	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	3300000	USD
CY2017Q3	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	2700000	USD
	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	9200000	USD
	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	7700000	USD
CY2017Q3	mco	Other Non Operating Income Expense Other OtherNonOperatingIncomeExpenseOther	2600000	USD
	mco	Other Non Operating Income Expense Other OtherNonOperatingIncomeExpenseOther	4900000	USD
	mco	Other Non Operating Income Expense Other OtherNonOperatingIncomeExpenseOther	2300000	USD
CY2018Q3	mco	Other Non Operating Income Expense Other OtherNonOperatingIncomeExpenseOther	400000	USD
	us-gaap	Dividends Dividends	4000000	USD
	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToNoncontrollingInterest	-10200000	USD
	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	2200000	USD
CY2018Q3	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	700000	USD
CY2017Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax	-4200000	USD
CY2017Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax	-1600000	USD
	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	-4000000	USD
CY2017Q3	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	-2400000	USD
CY2018Q3	us-gaap	Debt Instrument Face Amount DebtInstrumentFaceAmount	5005700000	USD
CY2018Q3	us-gaap	Interest Rate Derivatives At Fair Value Net InterestRateDerivativesAtFairValueNet	17800000	USD
CY2018Q3	us-gaap	Debt Instrument Unamortized Discount Premium Net DebtInstrumentUnamortizedDiscountPremiumNet	8200000	USD
CY2018Q3	us-gaap	Unamortized Debt Issuance Expense UnamortizedDebtIssuanceExpense	25200000	USD
CY2018Q3	us-gaap	Debt Longterm And Shortterm Combined Amount DebtLongtermAndShorttermCombinedAmount	4954500000	USD
CY2018Q3	us-gaap	Debt Current DebtCurrent	470500000	USD
CY2018Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal Remainder Of Fiscal Year LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear	25000000	USD
CY2018Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	450000000	USD
CY2018Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	550000000	USD
CY2018Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	800000000	USD
CY2018Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	500000000	USD
CY2018Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	2680700000	USD
CY2018Q3	us-gaap	Investment Income Interest InvestmentIncomeInterest	4100000	USD
CY2017Q3	us-gaap	Investment Income Interest InvestmentIncomeInterest	4300000	USD
	us-gaap	Investment Income Interest InvestmentIncomeInterest	10700000	USD
	us-gaap	Investment Income Interest InvestmentIncomeInterest	13000000	USD
CY2018Q3	us-gaap	Interest Expense Borrowings InterestExpenseBorrowings	46400000	USD
CY2017Q3	us-gaap	Interest Expense Borrowings InterestExpenseBorrowings	48800000	USD
	us-gaap	Interest Expense Borrowings InterestExpenseBorrowings	147100000	USD
	us-gaap	Interest Expense Borrowings InterestExpenseBorrowings	139900000	USD
CY2018Q3	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Expense UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense	9600000	USD
	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Expense UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense	10600000	USD
CY2018Q3	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	4900000	USD
CY2017Q3	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	5000000	USD
	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	14500000	USD
	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	14700000	USD
CY2018Q3	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	400000	USD
CY2017Q3	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	300000	USD
	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	1000000	USD
	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	800000	USD
CY2018Q3	mco	Direct Operating Costs Selling General And Administrative Expense DirectOperatingCostsSellingGeneralAndAdministrativeExpense	566600000	USD
CY2018Q3	us-gaap	Debt Instrument Fair Value DebtInstrumentFairValue	5052400000	USD
CY2018Q3	us-gaap	Long Term Debt LongTermDebt	4929600000	USD
CY2018Q3	mco	Adjusted Operating Income AdjustedOperatingIncome	514200000	USD
CY2018Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1034800000	USD
CY2018Q3	us-gaap	Short Term Investments ShortTermInvestments	110700000	USD
CY2017Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	-114900000	USD
CY2017Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	-2200000	USD
CY2017Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	-2200000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	-2200000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	-2200000	USD
CY2018Q3	us-gaap	Revenues Revenues	1080800000	USD
	us-gaap	Revenues Revenues	3382600000	USD
CY2018Q3	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	1000000000	shares
	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Amount EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitAmount	37500000	USD
	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Amount EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitAmount	35600000	USD
	us-gaap	Effective Income Tax Rate Reconciliation Repatriation Of Foreign Earnings EffectiveIncomeTaxRateReconciliationRepatriationOfForeignEarnings	0.21	pure
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CY2017Q3	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Expense UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense	-3900000	USD
	mco	Percentage Of Revenues PercentageOfRevenues	1	pure
CY2017Q3	mco	Percentage Of Revenues PercentageOfRevenues	1	pure
CY2017Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-257800000	USD
CY2017Q3	us-gaap	Revenues Revenues	1062900000	USD
	us-gaap	Revenues Revenues	3038600000	USD
CY2017Q3	mco	Direct Operating Costs Selling General And Administrative Expense DirectOperatingCostsSellingGeneralAndAdministrativeExpense	561300000	USD
CY2017Q3	mco	Adjusted Operating Income AdjustedOperatingIncome	501600000	USD
	mco	Direct Operating Costs Selling General And Administrative Expense DirectOperatingCostsSellingGeneralAndAdministrativeExpense	1743300000	USD
	mco	Adjusted Operating Income AdjustedOperatingIncome	1639300000	USD
	mco	Direct Operating Costs Selling General And Administrative Expense DirectOperatingCostsSellingGeneralAndAdministrativeExpense	1558200000	USD
	mco	Adjusted Operating Income AdjustedOperatingIncome	1480400000	USD
	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	2	pure
	mco	Unsupported Allegations Of Minimum Underpaid Taxes UnsupportedAllegationsOfMinimumUnderpaidTaxes	120000000	USD
CY2018Q2	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-304800000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax	800000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	800000	USD
CY2017Q2	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-309700000	USD
CY2017Q3	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	1300000	USD
CY2017Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax	1300000	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Reclassification Adjustments Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsNetOfTax	1200000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax	2500000	USD
	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	3700000	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Reclassification Adjustments Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsNetOfTax	4900000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax	3900000	USD
	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	8800000	USD
CY2017Q4	us-gaap	Foreign Currency Contracts Liability Fair Value Disclosure ForeignCurrencyContractsLiabilityFairValueDisclosure	2000000	USD
	us-gaap	Proceeds From Hedge Investing Activities ProceedsFromHedgeInvestingActivities	2100000	USD
	us-gaap	Proceeds From Divestiture Of Businesses ProceedsFromDivestitureOfBusinesses	5700000	USD
	us-gaap	Proceeds From Derivative Instrument Investing Activities ProceedsFromDerivativeInstrumentInvestingActivities	111100000	USD
	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	2	pure
CY2018Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax	-100000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax	-300000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax	-11700000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax	-4900000	USD
	us-gaap	Derivative Instruments Gain Loss Recognized In Income Ineffective Portion And Amount Excluded From Effectiveness Testing Net DerivativeInstrumentsGainLossRecognizedInIncomeIneffectivePortionAndAmountExcludedFromEffectivenessTestingNet	400000	USD
	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	-24000000	USD
CY2018Q3	us-gaap	Unrecognized Tax Benefits Period Increase Decrease UnrecognizedTaxBenefitsPeriodIncreaseDecrease	73500000	USD
	us-gaap	Unrecognized Tax Benefits Period Increase Decrease UnrecognizedTaxBenefitsPeriodIncreaseDecrease	82700000	USD
	mco	Business Combination Provisional Information Remaining Reduction In Deferred Revenue Fair Value Adjustment Liabilities BusinessCombinationProvisionalInformationRemainingReductionInDeferredRevenueFairValueAdjustmentLiabilities	1000000	USD
	dei	Entity Small Business EntitySmallBusiness	false
	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
	mco	Estimated Repatriation Tax Liability Resulting From Tax Act EstimatedRepatriationTaxLiabilityResultingFromTaxAct	247300000	USD
	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	7400000	USD
CY2018Q3	mco	Estimated Deferred Tax Asset Resulting From Tax Act EstimatedDeferredTaxAssetResultingFromTaxAct	54400000	USD

Files In Submission

Name	View Source	Status
0001193125-18-314004-index-headers.html	Edgar Link	pending
0001193125-18-314004-index.html	Edgar Link	pending
0001193125-18-314004.txt	Edgar Link	pending
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mco-20180930.xml	Edgar Link	completed
mco-20180930.xsd	Edgar Link	pending
mco-20180930_cal.xml	Edgar Link	unprocessable
mco-20180930_def.xml	Edgar Link	unprocessable
mco-20180930_lab.xml	Edgar Link	unprocessable
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$MCO
MOODYS CORP /DE/ Stock $mco

2018 Q3 Form 10-Q Financial Statement

#000119312518314004 Filed on October 31, 2018

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$MCO MOODYS CORP /DE/ Stock $mco

2018 Q3 Form 10-Q Financial Statement

#000119312518314004 Filed on October 31, 2018

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$MCO
MOODYS CORP /DE/ Stock $mco