$MSCI
MSCI Inc. Stock $msci

$msci Overview Financials Valuation SEC Filings Company Website

2024 Q1 Form 10-K Financial Statement

#000140819824000030 Filed on February 09, 2024

Income Statement

Concept	2024 Q1	2023 Q4	2023
Revenue	$680.0M	$690.1M	$2.529B
YoY Change	14.82%	19.77%	12.47%
Cost Of Revenue	$128.5M	$122.6M	$446.6M
YoY Change	18.29%	19.7%	10.45%
Gross Profit	$551.5M	$567.5M	$2.082B
YoY Change	14.04%	19.78%	12.91%
Gross Profit Margin	81.1%	82.24%	82.34%
Selling, General & Admin	$128.9M	$115.6M	$430.2M
YoY Change	19.85%	9.29%	4.55%
% of Gross Profit	23.37%	20.37%	20.66%
Research & Development	$40.53M	$39.22M	$132.1M
YoY Change	29.38%	35.12%	23.24%
% of Gross Profit	7.35%	6.91%	6.34%
Depreciation & Amortization	$42.69M	$41.98M	$135.4M
YoY Change	681.78%	38.69%	14.81%
% of Gross Profit	7.74%	7.4%	6.5%
Operating Expenses	$212.1M	$196.8M	$697.7M
YoY Change	52.74%	19.22%	9.6%
Operating Profit	$339.4M	$370.7M	$1.385B
YoY Change	7.88%	20.08%	14.65%
Interest Expense	-$40.63M	$99.48M	-$9.171M
YoY Change	-187.92%	-355.06%	-94.26%
% of Operating Profit	-11.97%	26.83%	-0.66%
Other Income/Expense, Net	-$2.863M	-$2.345M	-$6.377M
YoY Change	-92.51%	-42.62%	59.54%
Pretax Income	$295.9M	$467.9M	$1.369B
YoY Change	7.06%	76.12%	31.16%
Income Tax	$39.94M	$64.50M	$220.5M
% Of Pretax Income	13.5%	13.78%	16.1%
Net Earnings	$256.0M	$403.4M	$1.149B
YoY Change	7.22%	87.64%	31.94%
Net Earnings / Revenue	37.64%	58.45%	45.42%
Basic Earnings Per Share	$3.23		$14.45
Diluted Earnings Per Share	$3.22	$5.07	$14.39
COMMON SHARES
Basic Shares Outstanding	79.09M shares	79.09M shares	79.46M shares
Diluted Shares Outstanding	79.51M shares		79.84M shares

Balance Sheet

Concept	2024 Q1	2023 Q4	2023
SHORT-TERM ASSETS
Cash & Short-Term Investments	$515.5M	$457.8M	$457.8M
YoY Change	-52.3%	-53.92%	-53.92%
Cash & Equivalents	$515.5M	$461.7M	$457.8M
Short-Term Investments
Other Short-Term Assets	$103.8M	$120.8M	$120.8M
YoY Change	17.49%	32.48%	32.48%
Inventory
Prepaid Expenses
Receivables	$745.6M	$839.6M	$839.6M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$1.365B	$1.418B	$1.418B
YoY Change	-24.61%	-18.87%	-18.87%
LONG-TERM ASSETS
Property, Plant & Equipment	$188.1M	$55.92M	$171.2M
YoY Change	219.64%	3.84%	-5.14%
Goodwill	$2.891B	$2.888B
YoY Change	29.56%	29.51%
Intangibles
YoY Change
Long-Term Investments		$0.00	$0.00
YoY Change		-100.0%	-100.0%
Other Assets	$86.60M	$43.90M	$84.98M
YoY Change	111.91%	17.57%	27.69%
Total Long-Term Assets	$4.114B	$4.100B	$4.100B
YoY Change	26.65%	26.17%	26.17%
TOTAL ASSETS
Total Short-Term Assets	$1.365B	$1.418B	$1.418B
Total Long-Term Assets	$4.114B	$4.100B	$4.100B
Total Assets	$5.479B	$5.518B	$5.518B
YoY Change	8.3%	10.42%	10.42%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$12.05M	$9.812M	$9.812M
YoY Change	12.12%	-34.76%	-34.76%
Accrued Expenses	$258.2M	$387.7M	$387.7M
YoY Change	6.97%	15.46%	15.46%
Deferred Revenue	$1.054B	$1.084B
YoY Change	14.53%	22.76%
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$0.00	$10.90M	$10.90M
YoY Change	-100.0%	25.29%	25.12%
Total Short-Term Liabilities	$1.369B	$1.517B	$1.517B
YoY Change	13.27%	21.31%	21.31%
LONG-TERM LIABILITIES
Long-Term Debt	$4.508B	$4.497B	$4.497B
YoY Change	0.12%	-0.14%	-0.14%
Other Long-Term Liabilities	$234.7M	$96.97M	$217.1M
YoY Change	157.12%	6.53%	-2.47%
Total Long-Term Liabilities	$4.742B	$4.594B	$4.714B
YoY Change	3.24%	-0.01%	-0.25%
TOTAL LIABILITIES
Total Short-Term Liabilities	$1.369B	$1.517B	$1.517B
Total Long-Term Liabilities	$4.742B	$4.594B	$4.714B
Total Liabilities	$6.129B	$6.258B	$6.258B
YoY Change	2.84%	4.2%	4.2%
SHAREHOLDERS EQUITY
Retained Earnings	$4.306B	$4.180B
YoY Change	19.62%	20.34%
Common Stock	$1.624B	$1.589B
YoY Change	5.57%	4.73%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	-$650.5M	-$739.8M	-$739.8M
YoY Change
Total Liabilities & Shareholders Equity	$5.479B	$5.518B	$5.518B
YoY Change	8.3%	10.42%	10.42%

Cashflow Statement

Concept	2024 Q1	2023 Q4	2023
OPERATING ACTIVITIES
Net Income	$256.0M	$403.4M	$1.149B
YoY Change	7.22%	87.64%	31.94%
Depreciation, Depletion And Amortization	$42.69M	$41.98M	$135.4M
YoY Change	681.78%	38.69%	14.81%
Cash From Operating Activities	$300.1M	$388.9M	$1.236B
YoY Change	13.63%	23.3%	12.84%
INVESTING ACTIVITIES
Capital Expenditures	$24.24M	$21.85M	$22.76M
YoY Change	289.35%	6.81%	67.12%
Acquisitions	$7.820M		$727.3M
YoY Change
Other Investing Activities	-$8.096M	-$728.1M	$1.185M
YoY Change	-4452.69%	11164.34%	-81.59%
Cash From Investing Activities	-$32.33M	-$750.0M	-$819.4M
YoY Change	48.58%	2685.74%	932.81%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-207.2M	-111.5M	-$953.9M
YoY Change	30.91%	-35.36%	-33.08%
NET CHANGE
Cash From Operating Activities	300.1M	388.9M	$1.236B
Cash From Investing Activities	-32.33M	-750.0M	-$819.4M
Cash From Financing Activities	-207.2M	-111.5M	-$953.9M
Net Change In Cash	60.58M	-472.6M	-$531.9M
YoY Change	-30.4%	-507.57%	24.3%
FREE CASH FLOW
Cash From Operating Activities	$300.1M	$388.9M	$1.236B
Capital Expenditures	$24.24M	$21.85M	$22.76M
Free Cash Flow	$275.9M	$367.1M	$1.213B
YoY Change	6.97%	24.45%	12.16%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2023	us-gaap	Depreciation Depreciation	21009000	usd
CY2023	us-gaap	Costs And Expenses CostsAndExpenses	1144311000	usd
CY2022	us-gaap	Costs And Expenses CostsAndExpenses	1040958000	usd
CY2022	us-gaap	Operating Income Loss OperatingIncomeLoss	1207640000	usd
CY2021	us-gaap	Operating Income Loss OperatingIncomeLoss	1072725000	usd
CY2021	us-gaap	Investment Income Interest InvestmentIncomeInterest	1497000	usd
CY2022	us-gaap	Interest Expense InterestExpense	171571000	usd
CY2021	us-gaap	Interest Expense InterestExpense	159614000	usd
CY2022	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-3997000	usd
CY2021	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-56472000	usd
CY2021	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-214589000	usd
CY2021	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	21612000	usd
CY2023	us-gaap	Payment For Contingent Consideration Liability Financing Activities PaymentForContingentConsiderationLiabilityFinancingActivities	0	usd
CY2022	us-gaap	Payment For Contingent Consideration Liability Financing Activities PaymentForContingentConsiderationLiabilityFinancingActivities	211000	usd
CY2023	dei	Entity Central Index Key EntityCentralIndexKey	0001408198
CY2023	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2023
CY2023	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2023	dei	Amendment Flag AmendmentFlag	false
CY2023Q4	us-gaap	Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Period1 RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1
CY2023Q4	us-gaap	Operating Lease Liability Current Statement Of Financial Position Extensible List OperatingLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2023#OtherAccruedLiabilitiesCurrent
CY2023	dei	Document Annual Report DocumentAnnualReport	true
CY2023	dei	Document Period End Date DocumentPeriodEndDate	2023-12-31
CY2023	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2023	dei	Document Transition Report DocumentTransitionReport	false
CY2023	dei	Entity File Number EntityFileNumber	001-33812
CY2023	dei	Entity Registrant Name EntityRegistrantName	MSCI INC.
CY2023	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
CY2023	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	13-4038723
CY2023	dei	Entity Address Address Line1 EntityAddressAddressLine1	7 World Trade Center
CY2023	dei	Entity Address Address Line2 EntityAddressAddressLine2	250 Greenwich Street, 49th Floor
CY2023	dei	Entity Address City Or Town EntityAddressCityOrTown	New York
CY2023	dei	Entity Address State Or Province EntityAddressStateOrProvince	NY
CY2023	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	10007
CY2023	dei	City Area Code CityAreaCode	212
CY2023	dei	Local Phone Number LocalPhoneNumber	804-3900
CY2023	dei	Security12b Title Security12bTitle	Common stock, par value $0.01 per share
CY2023	dei	Trading Symbol TradingSymbol	MSCI
CY2023	dei	Security Exchange Name SecurityExchangeName	NYSE
CY2023	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2023	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2023	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2023	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2023	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2023	dei	Entity Small Business EntitySmallBusiness	false
CY2023	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2023	dei	Icfr Auditor Attestation Flag IcfrAuditorAttestationFlag	true
CY2023	dei	Document Fin Stmt Error Correction Flag DocumentFinStmtErrorCorrectionFlag	false
CY2023	dei	Entity Shell Company EntityShellCompany	false
CY2023Q2	dei	Entity Public Float EntityPublicFloat	35984916924	usd
CY2024Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	79091212	shares
CY2023	dei	Auditor Firm AuditorFirmId	238
CY2023	dei	Auditor Name AuditorName	PricewaterhouseCoopers LLP
CY2023	dei	Auditor Location AuditorLocation	New York, New York
CY2023Q4	us-gaap	Restricted Cash Current RestrictedCashCurrent	3878000	usd
CY2022Q4	us-gaap	Restricted Cash Current RestrictedCashCurrent	368000	usd
CY2023Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	461693000	usd
CY2022Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	993564000	usd
CY2023Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	3968000	usd
CY2022Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	2652000	usd
CY2023Q4	us-gaap	Accounts Receivable Net AccountsReceivableNet	839555000	usd
CY2022Q4	us-gaap	Accounts Receivable Net AccountsReceivableNet	663236000	usd
CY2023Q4	us-gaap	Prepaid Taxes PrepaidTaxes	59002000	usd
CY2022Q4	us-gaap	Prepaid Taxes PrepaidTaxes	36654000	usd
CY2023Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	57903000	usd
CY2022Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	54520000	usd
CY2023Q4	us-gaap	Assets Current AssetsCurrent	1418153000	usd
CY2022Q4	us-gaap	Assets Current AssetsCurrent	1747974000	usd
CY2023Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	55920000	usd
CY2022Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	53853000	usd
CY2023Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	115243000	usd
CY2022Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	126584000	usd
CY2023Q4	us-gaap	Goodwill Goodwill	2887692000	usd
CY2022Q4	us-gaap	Goodwill Goodwill	2229670000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	956234000	usd
CY2022Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	558517000	usd
CY2023Q4	us-gaap	Equity Method Investments EquityMethodInvestments	0	usd
CY2022Q4	us-gaap	Equity Method Investments EquityMethodInvestments	214389000	usd
CY2023Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	41074000	usd
CY2022Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	29207000	usd
CY2023Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	43903000	usd
CY2022Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	37341000	usd
CY2023Q4	us-gaap	Assets Assets	5518219000	usd
CY2022Q4	us-gaap	Assets Assets	4997535000	usd
CY2023Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	9812000	usd
CY2022Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	15039000	usd
CY2023Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	24709000	usd
CY2022Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	8058000	usd
CY2023Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	219456000	usd
CY2022Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	182370000	usd
CY2023Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	10902000	usd
CY2022Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	8713000	usd
CY2023Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	168282000	usd
CY2022Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	153461000	usd
CY2023Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	1083864000	usd
CY2022Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	882886000	usd
CY2023Q4	us-gaap	Liabilities Current LiabilitiesCurrent	1517025000	usd
CY2022Q4	us-gaap	Liabilities Current LiabilitiesCurrent	1250527000	usd
CY2023Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	4496826000	usd
CY2022Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	4503233000	usd
CY2023Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	120134000	usd
CY2022Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	131575000	usd
CY2023Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	27028000	usd
CY2022Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	29098000	usd
CY2023Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	96970000	usd
CY2022Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	91027000	usd
CY2023Q4	us-gaap	Liabilities Liabilities	6257983000	usd
CY2022Q4	us-gaap	Liabilities Liabilities	6005460000	usd
CY2023Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		usd
CY2022Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		usd
CY2023Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2022Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2022Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	100000000	shares
CY2023Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	100000000	shares
CY2023Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2022Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2023Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	usd
CY2022Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	usd
CY2022Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2023Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2022Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	750000000	shares
CY2023Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	750000000	shares
CY2023Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	133817332	shares
CY2022Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	133623005	shares
CY2023Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	79091212	shares
CY2022Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	79959989	shares
CY2023Q4	us-gaap	Common Stock Value CommonStockValue	1338000	usd
CY2022Q4	us-gaap	Common Stock Value CommonStockValue	1336000	usd
CY2023Q4	us-gaap	Treasury Stock Common Shares TreasuryStockCommonShares	54726120	shares
CY2022Q4	us-gaap	Treasury Stock Common Shares TreasuryStockCommonShares	53663016	shares
CY2023Q4	us-gaap	Treasury Stock Common Value TreasuryStockCommonValue	6447101000	usd
CY2022Q4	us-gaap	Treasury Stock Common Value TreasuryStockCommonValue	5938116000	usd
CY2023Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	1587670000	usd
CY2022Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	1515874000	usd
CY2023Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	4179681000	usd
CY2022Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	3473192000	usd
CY2023Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-61352000	usd
CY2022Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-60211000	usd
CY2023Q4	us-gaap	Stockholders Equity StockholdersEquity	-739764000	usd
CY2022Q4	us-gaap	Stockholders Equity StockholdersEquity	-1007925000	usd
CY2023Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	5518219000	usd
CY2022Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	4997535000	usd
CY2023	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	2528920000	usd
CY2022	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	2248598000	usd
CY2021	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	2043544000	usd
CY2023	us-gaap	Cost Of Goods And Service Excluding Depreciation Depletion And Amortization CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization	446581000	usd
CY2022	us-gaap	Cost Of Goods And Service Excluding Depreciation Depletion And Amortization CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization	404341000	usd
CY2021	us-gaap	Cost Of Goods And Service Excluding Depreciation Depletion And Amortization CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization	358684000	usd
CY2023	us-gaap	Selling And Marketing Expense SellingAndMarketingExpense	276204000	usd
CY2022	us-gaap	Selling And Marketing Expense SellingAndMarketingExpense	264583000	usd
CY2021	us-gaap	Selling And Marketing Expense SellingAndMarketingExpense	243185000	usd
CY2023	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	132121000	usd
CY2022	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	107205000	usd
CY2021	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	111564000	usd
CY2023	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	153967000	usd
CY2022	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	146857000	usd
CY2021	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	147893000	usd
CY2023	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	114429000	usd
CY2022	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	91079000	usd
CY2021	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	80592000	usd
CY2022	us-gaap	Depreciation Depreciation	26893000	usd
CY2021	us-gaap	Depreciation Depreciation	28901000	usd
CY2021	us-gaap	Costs And Expenses CostsAndExpenses	970819000	usd
CY2023	us-gaap	Interest Expense InterestExpense	186679000	usd
CY2023	us-gaap	Business Combination Step Acquisition Equity Interest In Acquiree Remeasurement Gain BusinessCombinationStepAcquisitionEquityInterestInAcquireeRemeasurementGain	143029000	usd
CY2022	us-gaap	Business Combination Step Acquisition Equity Interest In Acquiree Remeasurement Gain BusinessCombinationStepAcquisitionEquityInterestInAcquireeRemeasurementGain	0	usd
CY2021	us-gaap	Business Combination Step Acquisition Equity Interest In Acquiree Remeasurement Gain BusinessCombinationStepAcquisitionEquityInterestInAcquireeRemeasurementGain	0	usd
CY2023	us-gaap	Net Income Loss NetIncomeLoss	1148592000	usd
CY2023	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	14.45
CY2022	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	10.78
CY2023	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	14.39
CY2022	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	10.72
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	8.70
CY2023	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	79462000	shares
CY2022	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	80746000	shares
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	82508000	shares
CY2023	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	79843000	shares
CY2022	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	81215000	shares
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	83479000	shares
CY2023	us-gaap	Net Income Loss NetIncomeLoss	1148592000	usd
CY2022	us-gaap	Net Income Loss NetIncomeLoss	870573000	usd
CY2021	us-gaap	Net Income Loss NetIncomeLoss	725983000	usd
CY2023	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentBeforeTaxPortionAttributableToParent	7319000	usd
CY2022	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentBeforeTaxPortionAttributableToParent	-16016000	usd
CY2021	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentBeforeTaxPortionAttributableToParent	-3624000	usd
CY2023	us-gaap	Other Comprehensive Income Foreign Currency Translation Adjustment Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTranslationAdjustmentTaxPortionAttributableToParent	1451000	usd
CY2022	us-gaap	Other Comprehensive Income Foreign Currency Translation Adjustment Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTranslationAdjustmentTaxPortionAttributableToParent	-2722000	usd
CY2021	us-gaap	Other Comprehensive Income Foreign Currency Translation Adjustment Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTranslationAdjustmentTaxPortionAttributableToParent	-943000	usd
CY2023	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	5868000	usd
CY2022	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	-13294000	usd
CY2021	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	-2681000	usd
CY2023	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPortionAttributableToParent	8832000	usd
CY2022	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPortionAttributableToParent	-15593000	usd
CY2021	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPortionAttributableToParent	-3546000	usd
CY2023	us-gaap	Other Comprehensive Income Defined Benefit Plans Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansTaxPortionAttributableToParent	1823000	usd
CY2022	us-gaap	Other Comprehensive Income Defined Benefit Plans Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansTaxPortionAttributableToParent	-3715000	usd
CY2021	us-gaap	Other Comprehensive Income Defined Benefit Plans Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansTaxPortionAttributableToParent	-801000	usd
CY2023	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	7009000	usd
CY2022	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	-11878000	usd
CY2021	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	-2745000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-1141000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-1416000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	64000	usd
CY2023	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	1147451000	usd
CY2022	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	869157000	usd
CY2021	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	726047000	usd
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	-443234000	usd
CY2021	us-gaap	Net Income Loss NetIncomeLoss	725983000	usd
CY2021	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	3.64
CY2021	us-gaap	Dividends Dividends	303761000	usd
CY2021	msci	Adjustments To Additional Paid In Capital Dividends Paid In Shares AdjustmentsToAdditionalPaidInCapitalDividendsPaidInShares	128000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	64000	usd
CY2021	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	58794000	usd
CY2021	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	4000	usd
CY2021	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	54958000	usd
CY2021	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	139580000	usd
CY2021	msci	Treasury Stock Value Issued To Directors TreasuryStockValueIssuedToDirectors	-765000	usd
CY2021Q4	us-gaap	Stockholders Equity StockholdersEquity	-163467000	usd
CY2022	us-gaap	Net Income Loss NetIncomeLoss	870573000	usd
CY2022	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	4.58
CY2022	us-gaap	Dividends Dividends	373898000	usd
CY2022	msci	Adjustments To Additional Paid In Capital Dividends Paid In Shares AdjustmentsToAdditionalPaidInCapitalDividendsPaidInShares	162000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-1416000	usd
CY2022	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	112681000	usd
CY2022	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	4000	usd
CY2022	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	58089000	usd
CY2022	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	1284825000	usd
CY2022	msci	Treasury Stock Value Issued To Directors TreasuryStockValueIssuedToDirectors	466000	usd
CY2022Q4	us-gaap	Stockholders Equity StockholdersEquity	-1007925000	usd
CY2023	us-gaap	Net Income Loss NetIncomeLoss	1148592000	usd
CY2023	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	5.52
CY2023	us-gaap	Dividends Dividends	442103000	usd
CY2023	msci	Adjustments To Additional Paid In Capital Dividends Paid In Shares AdjustmentsToAdditionalPaidInCapitalDividendsPaidInShares	152000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-1141000	usd
CY2023	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	45469000	usd
CY2023	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	2000	usd
CY2023	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	71644000	usd
CY2023	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	462693000	usd
CY2023	msci	Treasury Stock Value Issued To Directors TreasuryStockValueIssuedToDirectors	823000	usd
CY2023Q4	us-gaap	Stockholders Equity StockholdersEquity	-739764000	usd
CY2023	us-gaap	Profit Loss ProfitLoss	1148592000	usd
CY2022	us-gaap	Profit Loss ProfitLoss	870573000	usd
CY2021	us-gaap	Profit Loss ProfitLoss	725983000	usd
CY2023	us-gaap	Business Combination Step Acquisition Equity Interest In Acquiree Remeasurement Gain BusinessCombinationStepAcquisitionEquityInterestInAcquireeRemeasurementGain	143029000	usd
CY2022	us-gaap	Business Combination Step Acquisition Equity Interest In Acquiree Remeasurement Gain BusinessCombinationStepAcquisitionEquityInterestInAcquireeRemeasurementGain	0	usd
CY2021	us-gaap	Business Combination Step Acquisition Equity Interest In Acquiree Remeasurement Gain BusinessCombinationStepAcquisitionEquityInterestInAcquireeRemeasurementGain	0	usd
CY2023	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	114429000	usd
CY2022	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	91079000	usd
CY2021	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	80592000	usd
CY2023	us-gaap	Share Based Compensation ShareBasedCompensation	71653000	usd
CY2022	us-gaap	Share Based Compensation ShareBasedCompensation	58094000	usd
CY2021	us-gaap	Share Based Compensation ShareBasedCompensation	54917000	usd
CY2023	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	21009000	usd
CY2022	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	26893000	usd
CY2021	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	28901000	usd
CY2023	us-gaap	Operating Lease Right Of Use Asset Amortization Expense OperatingLeaseRightOfUseAssetAmortizationExpense	23781000	usd
CY2022	us-gaap	Operating Lease Right Of Use Asset Amortization Expense OperatingLeaseRightOfUseAssetAmortizationExpense	24524000	usd
CY2021	us-gaap	Operating Lease Right Of Use Asset Amortization Expense OperatingLeaseRightOfUseAssetAmortizationExpense	24632000	usd
CY2023	us-gaap	Operating Lease Impairment Loss OperatingLeaseImpairmentLoss	477000	usd
CY2022	us-gaap	Operating Lease Impairment Loss OperatingLeaseImpairmentLoss	705000	usd
CY2021	us-gaap	Operating Lease Impairment Loss OperatingLeaseImpairmentLoss	8385000	usd
CY2023	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	5055000	usd
CY2022	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	5132000	usd
CY2021	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	4923000	usd
CY2023	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	usd
CY2022	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	usd
CY2021	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-59103000	usd
CY2023	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-15258000	usd
CY2022	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	36436000	usd
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-111369000	usd
CY2023	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-6863000	usd
CY2022	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-1361000	usd
CY2021	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	146000	usd
CY2023	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	149529000	usd
CY2022	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	6624000	usd
CY2021	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	99203000	usd
CY2023	us-gaap	Increase Decrease In Prepaid Taxes IncreaseDecreaseInPrepaidTaxes	21931000	usd
CY2022	us-gaap	Increase Decrease In Prepaid Taxes IncreaseDecreaseInPrepaidTaxes	31684000	usd
CY2021	us-gaap	Increase Decrease In Prepaid Taxes IncreaseDecreaseInPrepaidTaxes	-15264000	usd
CY2023	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-1564000	usd
CY2022	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	3781000	usd
CY2021	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	4240000	usd
CY2023	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	8102000	usd
CY2022	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	-31448000	usd
CY2021	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	35445000	usd
CY2023	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-6044000	usd
CY2022	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	1337000	usd
CY2021	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-2195000	usd
CY2023	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	14721000	usd
CY2022	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	-49296000	usd
CY2021	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	33903000	usd
CY2023	us-gaap	Increase Decrease In Employee Related Liabilities IncreaseDecreaseInEmployeeRelatedLiabilities	23218000	usd
CY2022	us-gaap	Increase Decrease In Employee Related Liabilities IncreaseDecreaseInEmployeeRelatedLiabilities	-22432000	usd
CY2021	us-gaap	Increase Decrease In Employee Related Liabilities IncreaseDecreaseInEmployeeRelatedLiabilities	42719000	usd
CY2023	us-gaap	Increase Decrease In Other Accrued Liabilities IncreaseDecreaseInOtherAccruedLiabilities	3536000	usd
CY2022	us-gaap	Increase Decrease In Other Accrued Liabilities IncreaseDecreaseInOtherAccruedLiabilities	10654000	usd
CY2021	us-gaap	Increase Decrease In Other Accrued Liabilities IncreaseDecreaseInOtherAccruedLiabilities	-9249000	usd
CY2023	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	171968000	usd
CY2022	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	72752000	usd
CY2021	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	116863000	usd
CY2023	msci	Increase Decrease In Long Term Operating Lease Liabilities IncreaseDecreaseInLongTermOperatingLeaseLiabilities	-24062000	usd
CY2022	msci	Increase Decrease In Long Term Operating Lease Liabilities IncreaseDecreaseInLongTermOperatingLeaseLiabilities	-25467000	usd
CY2021	msci	Increase Decrease In Long Term Operating Lease Liabilities IncreaseDecreaseInLongTermOperatingLeaseLiabilities	-22078000	usd
CY2023	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	-6538000	usd
CY2022	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	4106000	usd
CY2021	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	21536000	usd
CY2023	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	-3656000	usd
CY2022	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	441000	usd
CY2021	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	-2273000	usd
CY2023	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1236029000	usd
CY2022	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1095369000	usd
CY2021	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	936069000	usd
CY2023	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	727342000	usd
CY2022	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	usd
CY2021	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	948989000	usd
CY2023	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	0	usd
CY2022	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	5000	usd
CY2021	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	26361000	usd
CY2023	us-gaap	Payments To Acquire Assets Investing Activities PaymentsToAcquireAssetsInvestingActivities	0	usd
CY2022	us-gaap	Payments To Acquire Assets Investing Activities PaymentsToAcquireAssetsInvestingActivities	0	usd
CY2021	us-gaap	Payments To Acquire Assets Investing Activities PaymentsToAcquireAssetsInvestingActivities	6512000	usd
CY2023	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	22757000	usd
CY2022	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	13617000	usd
CY2021	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	13509000	usd
CY2023	us-gaap	Payments For Software PaymentsForSoftware	68094000	usd
CY2022	us-gaap	Payments For Software PaymentsForSoftware	59278000	usd
CY2021	us-gaap	Payments For Software PaymentsForSoftware	39285000	usd
CY2023	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	1185000	usd
CY2022	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	6435000	usd
CY2021	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	1057000	usd
CY2023	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-819378000	usd
CY2022	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-79335000	usd
CY2021	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1035713000	usd
CY2023	us-gaap	Proceeds From Issuance Of Debt ProceedsFromIssuanceOfDebt	0	usd
CY2022	us-gaap	Proceeds From Issuance Of Debt ProceedsFromIssuanceOfDebt	355000000	usd
CY2021	us-gaap	Proceeds From Issuance Of Debt ProceedsFromIssuanceOfDebt	1803750000	usd
CY2023	us-gaap	Repayments Of Debt RepaymentsOfDebt	8750000	usd
CY2022	us-gaap	Repayments Of Debt RepaymentsOfDebt	7188000	usd
CY2021	us-gaap	Repayments Of Debt RepaymentsOfDebt	1051810000	usd
CY2023	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	504188000	usd
CY2022	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	1397506000	usd
CY2021	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	198374000	usd
CY2023	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	440993000	usd
CY2022	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	372915000	usd
CY2021	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	302449000	usd
CY2021	us-gaap	Payment For Contingent Consideration Liability Financing Activities PaymentForContingentConsiderationLiabilityFinancingActivities	0	usd
CY2023	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-953931000	usd
CY2022	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-1425380000	usd
CY2021	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	229505000	usd
CY2023	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	5409000	usd
CY2022	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	-18539000	usd
CY2021	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	-8933000	usd
CY2023	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-531871000	usd
CY2022	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-427885000	usd
CY2021	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	120928000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	993564000	usd
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1421449000	usd
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1300521000	usd
CY2023Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	461693000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	993564000	usd
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1421449000	usd
CY2023	us-gaap	Interest Paid Net InterestPaidNet	182313000	usd
CY2022	us-gaap	Interest Paid Net InterestPaidNet	165116000	usd
CY2021	us-gaap	Interest Paid Net InterestPaidNet	151335000	usd
CY2023	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	240479000	usd
CY2022	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	180686000	usd
CY2021	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	222620000	usd
CY2023	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	2738000	usd
CY2022	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	1849000	usd
CY2021	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	3498000	usd
CY2023Q4	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	1941000	usd
CY2022Q4	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	3748000	usd
CY2021Q4	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	2599000	usd
CY2023	us-gaap	Revenue Performance Obligation Description Of Timing RevenuePerformanceObligationDescriptionOfTiming	For contracts that have a duration of one year or less, the Company has not disclosed either the remaining performance obligation as of the end of the reporting period or when the Company expects to recognize the revenue.
CY2023	us-gaap	Use Of Estimates UseOfEstimates	<div style="margin-top:6pt;padding-left:18pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Basis of Financial Statements and Use of Estimates</span></div><div style="margin-top:6pt;text-indent:36pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The Company makes certain estimates and judgments that can affect the reported amounts of assets and liabilities as of the date of the consolidated financial statements, as well as the reported amounts of operating revenues and expenses during the periods presented. Significant estimates and judgments made by management include such examples as the assessment of the fair value of acquired intangible assets; the assessment of impairment of goodwill and intangible assets; and income taxes. The Company believes that estimates used in the preparation of these consolidated financial statements are reasonable; however, actual results could differ materially from these estimates. Inter-company balances and transactions are eliminated in consolidation.</span></div>
CY2023	msci	Share Based Compensation Arrangement By Share Based Payment Award Options Cumulative Adjusted Earnings Per Common Share Performance Goal Weight ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsCumulativeAdjustedEarningsPerCommonSharePerformanceGoalWeight	0.50
CY2023	msci	Share Based Compensation Arrangement By Share Based Payment Award Options Cumulative Revenue Performance Goal Weight ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsCumulativeRevenuePerformanceGoalWeight	0.50
CY2020Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	1583000	usd
CY2021	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	1210000	usd
CY2021	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	456000	usd
CY2021Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	2337000	usd
CY2022	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	910000	usd
CY2022	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	595000	usd
CY2022Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	2652000	usd
CY2023	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	2196000	usd
CY2023	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	880000	usd
CY2023Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	3968000	usd
CY2021	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	usd
CY2023	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	usd
CY2022	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	usd
CY2023Q4	us-gaap	Indefinite Lived Intangible Assets Excluding Goodwill IndefiniteLivedIntangibleAssetsExcludingGoodwill	0	usd
CY2022Q4	us-gaap	Indefinite Lived Intangible Assets Excluding Goodwill IndefiniteLivedIntangibleAssetsExcludingGoodwill	0	usd
CY2023	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	<div style="margin-top:18pt;padding-left:18pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Concentrations</span></div>For the years ended December 31, 2023, 2022 and 2021, BlackRock, Inc. accounted for 9.8%, 10.3%, and 12.7% of the Company’s consolidated operating revenues, respectively. For the years ended December 31, 2023, 2022 and 2021, BlackRock, Inc. accounted for 16.8%, 17.4% and 20.4% of the Index segment’s operating revenues, respectively. No single customer accounted for 10.0% or more of operating revenues within the Analytics, ESG and Climate and All Other – Private Assets segments for the years ended December 31, 2023, 2022 and 2021.
CY2023	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	2528920000	usd
CY2022	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	2248598000	usd
CY2021	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	2043544000	usd
CY2022Q4	us-gaap	Accounts Receivable Net AccountsReceivableNet	663236000	usd
CY2022Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	882886000	usd
CY2023Q4	us-gaap	Accounts Receivable Net AccountsReceivableNet	839555000	usd
CY2023Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	1083864000	usd
CY2023	msci	Accounts Receivable Increase Decrease AccountsReceivableIncreaseDecrease	176319000	usd
CY2023	msci	Increase Decrease In Contract With Customer Liability Current IncreaseDecreaseInContractWithCustomerLiabilityCurrent	200978000	usd
CY2021Q4	us-gaap	Accounts Receivable Net AccountsReceivableNet	664511000	usd
CY2021Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	824912000	usd
CY2022Q4	us-gaap	Accounts Receivable Net AccountsReceivableNet	663236000	usd
CY2022Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	882886000	usd
CY2022	msci	Accounts Receivable Increase Decrease AccountsReceivableIncreaseDecrease	-1275000	usd
CY2022	msci	Increase Decrease In Contract With Customer Liability Current IncreaseDecreaseInContractWithCustomerLiabilityCurrent	57974000	usd
CY2023	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	836700000	usd
CY2022	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	819900000	usd
CY2021	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	672500000	usd
CY2023Q4	us-gaap	Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Period1 RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1	P12M
CY2023Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	838863000	usd
CY2023Q4	us-gaap	Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Period1 RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1	P12M
CY2023Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	530258000	usd
CY2023Q4	us-gaap	Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Period1 RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1	P12M
CY2023Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	256911000	usd
CY2023Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	182052000	usd
CY2023Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	1808084000	usd
CY2023	us-gaap	Net Income Loss NetIncomeLoss	1148592000	usd
CY2022	us-gaap	Net Income Loss NetIncomeLoss	870573000	usd
CY2021	us-gaap	Net Income Loss NetIncomeLoss	725983000	usd
CY2023	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	79462000	shares
CY2022	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	80746000	shares
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	82508000	shares
CY2023	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	381000	shares
CY2022	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	469000	shares
CY2021	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	971000	shares
CY2023	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	79843000	shares
CY2022	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	81215000	shares
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	83479000	shares
CY2023	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	14.45
CY2022	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	10.78
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	8.80
CY2023	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	14.39
CY2022	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	10.72
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	8.70
CY2023Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	4539063000	usd
CY2023Q4	us-gaap	Long Term Debt LongTermDebt	4507728000	usd
CY2022Q4	us-gaap	Long Term Debt LongTermDebt	4511947000	usd
CY2023Q4	us-gaap	Debt Instrument Fair Value DebtInstrumentFairValue	4124310000	usd
CY2022Q4	us-gaap	Debt Instrument Fair Value DebtInstrumentFairValue	3850132000	usd
CY2023Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	10900000	usd
CY2023Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	10938000	usd
CY2023Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	19688000	usd
CY2023Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	26250000	usd
CY2023Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	282187000	usd
CY2023Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	0	usd
CY2023Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	4200000000	usd
CY2023Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	4539063000	usd
CY2023Q4	us-gaap	Debt Instrument Unamortized Discount Premium And Debt Issuance Costs Net DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet	33000000.0	usd
CY2023	us-gaap	Operating Lease Cost OperatingLeaseCost	29240000	usd
CY2022	us-gaap	Operating Lease Cost OperatingLeaseCost	29724000	usd
CY2021	us-gaap	Operating Lease Cost OperatingLeaseCost	30615000	usd
CY2023	us-gaap	Variable Lease Cost VariableLeaseCost	3876000	usd
CY2022	us-gaap	Variable Lease Cost VariableLeaseCost	3286000	usd
CY2021	us-gaap	Variable Lease Cost VariableLeaseCost	3017000	usd
CY2023	us-gaap	Short Term Lease Cost ShortTermLeaseCost	745000	usd
CY2022	us-gaap	Short Term Lease Cost ShortTermLeaseCost	477000	usd
CY2021	us-gaap	Short Term Lease Cost ShortTermLeaseCost	343000	usd
CY2023	us-gaap	Sublease Income SubleaseIncome	5127000	usd
CY2022	us-gaap	Sublease Income SubleaseIncome	4630000	usd
CY2021	us-gaap	Sublease Income SubleaseIncome	3303000	usd
CY2023	us-gaap	Lease Cost LeaseCost	28734000	usd
CY2022	us-gaap	Lease Cost LeaseCost	28857000	usd
CY2021	us-gaap	Lease Cost LeaseCost	30672000	usd
CY2023	us-gaap	Lessee Operating Lease Option To Extend LesseeOperatingLeaseOptionToExtend	Some of these leases have options to extend which, if exercised, would extend the maximum remaining term to approximately 23 years.
CY2023	us-gaap	Lessee Operating Lease Option To Terminate LesseeOperatingLeaseOptionToTerminate	Some of the leases also provide for early termination, the exercise of which would shorten the term of those leases by up to 5 years.
CY2021	us-gaap	Operating Lease Impairment Loss OperatingLeaseImpairmentLoss	8400000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	27167000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	26010000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	23976000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	17913000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	17346000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	50003000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	162415000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	19852000	usd
CY2023Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	142563000	usd
CY2023Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	22429000	usd
CY2023Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	120134000	usd
CY2023Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P7Y14D
CY2022Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P7Y10M9D
CY2023Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0366
CY2022Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0340
CY2023	us-gaap	Operating Lease Payments OperatingLeasePayments	31249000	usd
CY2022	us-gaap	Operating Lease Payments OperatingLeasePayments	29385000	usd
CY2021	us-gaap	Operating Lease Payments OperatingLeasePayments	30972000	usd
CY2023	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	12568000	usd
CY2022	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	15979000	usd
CY2021	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	26004000	usd
CY2023Q4	us-gaap	Machinery And Equipment Gross MachineryAndEquipmentGross	192008000	usd
CY2022Q4	us-gaap	Machinery And Equipment Gross MachineryAndEquipmentGross	181710000	usd
CY2023Q4	us-gaap	Furniture And Fixtures Gross FurnitureAndFixturesGross	16169000	usd
CY2022Q4	us-gaap	Furniture And Fixtures Gross FurnitureAndFixturesGross	14078000	usd
CY2023Q4	us-gaap	Leasehold Improvements Gross LeaseholdImprovementsGross	58582000	usd
CY2022Q4	us-gaap	Leasehold Improvements Gross LeaseholdImprovementsGross	54040000	usd
CY2023Q4	us-gaap	Construction In Progress Gross ConstructionInProgressGross	897000	usd
CY2022Q4	us-gaap	Construction In Progress Gross ConstructionInProgressGross	2373000	usd
CY2023Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	267656000	usd
CY2022Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	252201000	usd
CY2023Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	211736000	usd
CY2022Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	198348000	usd
CY2023Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	55920000	usd
CY2022Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	53853000	usd
CY2023	us-gaap	Depreciation Depreciation	21000000.0	usd
CY2022	us-gaap	Depreciation Depreciation	26900000	usd
CY2021	us-gaap	Depreciation Depreciation	28900000	usd
CY2021Q4	us-gaap	Goodwill Goodwill	2236386000	usd
CY2022	us-gaap	Goodwill Purchase Accounting Adjustments GoodwillPurchaseAccountingAdjustments	-541000	usd
CY2022	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	-6175000	usd
CY2022Q4	us-gaap	Goodwill Goodwill	2229670000	usd
CY2023	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	653327000	usd
CY2023	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	4695000	usd
CY2023Q4	us-gaap	Goodwill Goodwill	2887692000	usd
CY2023	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	114429000	usd
CY2022	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	91079000	usd
CY2021	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	80592000	usd
CY2023Q4	msci	Finite Lived Intangible Assets Gross Excluding Accumulated Foreign Exchange Translation Adjustment FiniteLivedIntangibleAssetsGrossExcludingAccumulatedForeignExchangeTranslationAdjustment	1846187000	usd
CY2022Q4	msci	Finite Lived Intangible Assets Gross Excluding Accumulated Foreign Exchange Translation Adjustment FiniteLivedIntangibleAssetsGrossExcludingAccumulatedForeignExchangeTranslationAdjustment	1336616000	usd
CY2023Q4	msci	Finite Lived Intangible Assets Gross Accumulated Foreign Exchange Translation Adjustment FiniteLivedIntangibleAssetsGrossAccumulatedForeignExchangeTranslationAdjustment	-9410000	usd
CY2022Q4	msci	Finite Lived Intangible Assets Gross Accumulated Foreign Exchange Translation Adjustment FiniteLivedIntangibleAssetsGrossAccumulatedForeignExchangeTranslationAdjustment	-13214000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	1836777000	usd
CY2022Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	1323402000	usd
CY2023Q4	msci	Finite Lived Intangible Assets Accumulated Amortization Excluding Foreign Exchange Translation Adjustment FiniteLivedIntangibleAssetsAccumulatedAmortizationExcludingForeignExchangeTranslationAdjustment	882788000	usd
CY2022Q4	msci	Finite Lived Intangible Assets Accumulated Amortization Excluding Foreign Exchange Translation Adjustment FiniteLivedIntangibleAssetsAccumulatedAmortizationExcludingForeignExchangeTranslationAdjustment	769356000	usd
CY2023Q4	msci	Finite Lived Intangible Assets Accumulated Amortization Foreign Exchange Translation Adjustment FiniteLivedIntangibleAssetsAccumulatedAmortizationForeignExchangeTranslationAdjustment	-2245000	usd
CY2022Q4	msci	Finite Lived Intangible Assets Accumulated Amortization Foreign Exchange Translation Adjustment FiniteLivedIntangibleAssetsAccumulatedAmortizationForeignExchangeTranslationAdjustment	-4471000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	880543000	usd
CY2022Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	764885000	usd
CY2023Q4	msci	Finite Lived Intangible Assets Net Excluding Accumulated Foreign Exchange Translation Adjustment FiniteLivedIntangibleAssetsNetExcludingAccumulatedForeignExchangeTranslationAdjustment	963399000	usd
CY2022Q4	msci	Finite Lived Intangible Assets Net Excluding Accumulated Foreign Exchange Translation Adjustment FiniteLivedIntangibleAssetsNetExcludingAccumulatedForeignExchangeTranslationAdjustment	567260000	usd
CY2023Q4	msci	Finite Lived Intangible Assets Net Accumulated Foreign Exchange Translation Adjustment FiniteLivedIntangibleAssetsNetAccumulatedForeignExchangeTranslationAdjustment	-7165000	usd
CY2022Q4	msci	Finite Lived Intangible Assets Net Accumulated Foreign Exchange Translation Adjustment FiniteLivedIntangibleAssetsNetAccumulatedForeignExchangeTranslationAdjustment	-8743000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	956234000	usd
CY2022Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	558517000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	153026000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	127085000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	91753000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	67234000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	65307000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	451829000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	956234000	usd
CY2023	us-gaap	Pension And Other Postretirement Benefit Expense PensionAndOtherPostretirementBenefitExpense	38739000	usd
CY2022	us-gaap	Pension And Other Postretirement Benefit Expense PensionAndOtherPostretirementBenefitExpense	36504000	usd
CY2021	us-gaap	Pension And Other Postretirement Benefit Expense PensionAndOtherPostretirementBenefitExpense	31525000	usd
CY2023	us-gaap	Pension And Other Postretirement Benefit Expense PensionAndOtherPostretirementBenefitExpense	38739000	usd
CY2022	us-gaap	Pension And Other Postretirement Benefit Expense PensionAndOtherPostretirementBenefitExpense	36504000	usd
CY2021	us-gaap	Pension And Other Postretirement Benefit Expense PensionAndOtherPostretirementBenefitExpense	31525000	usd
CY2023Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	31900000	usd
CY2022Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	20100000	usd
CY2023Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	31800000	usd
CY2022Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	29800000	usd
CY2023	msci	Stock Repurchase Program Excise Tax Percentage StockRepurchaseProgramExciseTaxPercentage	0.01
CY2023	msci	Stock Repurchase Program Excise Tax Percentage StockRepurchaseProgramExciseTaxPercentage	0.01
CY2023Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.38
CY2023Q1	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	111986000	usd
CY2023Q1	us-gaap	Dividends Common Stock DividendsCommonStock	112189000	usd
CY2023Q1	msci	Increase Decrease In Deferred Dividends IncreaseDecreaseInDeferredDividends	-203000	usd
CY2023Q2	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.38
CY2023Q2	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	110383000	usd
CY2023Q2	us-gaap	Dividends Common Stock DividendsCommonStock	110147000	usd
CY2023Q2	msci	Increase Decrease In Deferred Dividends IncreaseDecreaseInDeferredDividends	236000	usd
CY2023Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.38
CY2023Q3	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	109847000	usd
CY2023Q3	us-gaap	Dividends Common Stock DividendsCommonStock	109408000	usd
CY2023Q3	msci	Increase Decrease In Deferred Dividends IncreaseDecreaseInDeferredDividends	439000	usd
CY2023Q4	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.38
CY2023Q4	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	109887000	usd
CY2023Q4	us-gaap	Dividends Common Stock DividendsCommonStock	109399000	usd
CY2023Q4	msci	Increase Decrease In Deferred Dividends IncreaseDecreaseInDeferredDividends	488000	usd
CY2023	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	5.52
CY2023	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	442103000	usd
CY2023	us-gaap	Dividends Common Stock DividendsCommonStock	441143000	usd
CY2023	msci	Increase Decrease In Deferred Dividends IncreaseDecreaseInDeferredDividends	960000	usd
CY2022Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.04
CY2022Q1	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	87280000	usd
CY2022Q1	us-gaap	Dividends Common Stock DividendsCommonStock	87846000	usd
CY2022Q1	msci	Increase Decrease In Deferred Dividends IncreaseDecreaseInDeferredDividends	-566000	usd
CY2022Q2	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.04
CY2022Q2	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	84593000	usd
CY2022Q2	us-gaap	Dividends Common Stock DividendsCommonStock	84189000	usd
CY2022Q2	msci	Increase Decrease In Deferred Dividends IncreaseDecreaseInDeferredDividends	404000	usd
CY2022Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.25
CY2022Q3	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	101354000	usd
CY2022Q3	us-gaap	Dividends Common Stock DividendsCommonStock	100849000	usd
CY2022Q3	msci	Increase Decrease In Deferred Dividends IncreaseDecreaseInDeferredDividends	505000	usd
CY2022Q4	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.25
CY2022Q4	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	100671000	usd
CY2022Q4	us-gaap	Dividends Common Stock DividendsCommonStock	100192000	usd
CY2022Q4	msci	Increase Decrease In Deferred Dividends IncreaseDecreaseInDeferredDividends	479000	usd
CY2022	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	4.58
CY2022	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	373898000	usd
CY2022	us-gaap	Dividends Common Stock DividendsCommonStock	373076000	usd
CY2022	msci	Increase Decrease In Deferred Dividends IncreaseDecreaseInDeferredDividends	822000	usd
CY2021Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.78
CY2021Q1	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	65947000	usd
CY2021Q1	us-gaap	Dividends Common Stock DividendsCommonStock	66153000	usd
CY2021Q1	msci	Increase Decrease In Deferred Dividends IncreaseDecreaseInDeferredDividends	-206000	usd
CY2021Q2	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.78
CY2021Q2	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	64863000	usd
CY2021Q2	us-gaap	Dividends Common Stock DividendsCommonStock	64489000	usd
CY2021Q2	msci	Increase Decrease In Deferred Dividends IncreaseDecreaseInDeferredDividends	374000	usd
CY2021Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.04
CY2021Q3	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	86476000	usd
CY2021Q3	us-gaap	Dividends Common Stock DividendsCommonStock	85961000	usd
CY2021Q3	msci	Increase Decrease In Deferred Dividends IncreaseDecreaseInDeferredDividends	515000	usd
CY2021Q4	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.04
CY2021Q4	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	86475000	usd
CY2021Q4	us-gaap	Dividends Common Stock DividendsCommonStock	85973000	usd
CY2021Q4	msci	Increase Decrease In Deferred Dividends IncreaseDecreaseInDeferredDividends	502000	usd
CY2021	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	3.64
CY2021	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	303761000	usd
CY2021	us-gaap	Dividends Common Stock DividendsCommonStock	302576000	usd
CY2021	msci	Increase Decrease In Deferred Dividends IncreaseDecreaseInDeferredDividends	1185000	usd
CY2023	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	73043000	usd
CY2022	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	58043000	usd
CY2021	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	58488000	usd
CY2023	msci	Employee Service Share Based Compensation Windfall Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationWindfallTaxBenefitFromCompensationExpense	11400000	usd
CY2022	msci	Employee Service Share Based Compensation Windfall Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationWindfallTaxBenefitFromCompensationExpense	28400000	usd
CY2021	msci	Employee Service Share Based Compensation Windfall Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationWindfallTaxBenefitFromCompensationExpense	22300000	usd
CY2023Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	91700000	usd
CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	3100000	shares
CY2022Q4	msci	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested And Unvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedAndUnvestedNumber	554000	shares
CY2022Q4	msci	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested And Unvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedAndUnvestedWeightedAverageGrantDateFairValue	283.66
CY2023	msci	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested And Unvested Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedAndUnvestedGrantsInPeriod	182000	shares
CY2023	msci	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested And Unvested Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedAndUnvestedGrantsInPeriodWeightedAverageGrantDateFairValue	457.10
CY2023	msci	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested And Unvested Conversions In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedAndUnvestedConversionsInPeriod	196000	shares
CY2023	msci	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested And Unvested Conversions In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedAndUnvestedConversionsInPeriodWeightedAverageGrantDateFairValue	264.88
CY2023	msci	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested And Unvested Forfeited In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedAndUnvestedForfeitedInPeriod	18000	shares
CY2023	msci	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested And Unvested Forfeited In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedAndUnvestedForfeitedInPeriodWeightedAverageGrantDateFairValue	402.02
CY2023Q4	msci	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested And Unvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedAndUnvestedNumber	522000	shares
CY2023Q4	msci	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested And Unvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedAndUnvestedWeightedAverageGrantDateFairValue	346.44
CY2023Q4	msci	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested And Expected To Vest Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedAndExpectedToVestOutstandingNumber	498000	shares
CY2023Q4	msci	Share Based Compensation Arrangement By Share Based Payment Awards Vested And Expected To Vest Weighted Average Price ShareBasedCompensationArrangementByShareBasedPaymentAwardsVestedAndExpectedToVestWeightedAveragePrice	340.15
CY2023	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Total Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue	107800000	usd
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Total Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue	250400000	usd
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Total Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue	152600000	usd
CY2022Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	119000	shares
CY2022Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	549.83
CY2023	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	117000	shares
CY2023	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	554.52
CY2023	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested Number Of Shares SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedNumberOfShares	0	shares
CY2023	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested Weighted Average Grant Date Fair Value SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedWeightedAverageGrantDateFairValue	0
CY2023	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	5000	shares
CY2023	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	551.40
CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	231000	shares
CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	552.18
CY2023	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P8Y7M6D
CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	3388000	usd
CY2023Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Number Of Shares SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares	219000	shares
CY2023Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Weighted Average Grant Date Fair Value SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue	552.15
CY2023	msci	Share Based Compensation Arrangement By Share Based Payment Award Option Nonvested Weighted Average Remaining Contractual Term ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionNonvestedWeightedAverageRemainingContractualTerm	P8Y7M6D
CY2023Q4	msci	Share Based Compensation Arrangement By Share Based Payment Award Option Nonvested Aggregate Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionNonvestedAggregateIntrinsicValue	3220000	usd
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0	shares
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	0	shares
CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	0	shares
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	0	shares
CY2022Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	0	shares
CY2023	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	93475000	usd
CY2022	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	53517000	usd
CY2021	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	133281000	usd
CY2023	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	40567000	usd
CY2022	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	15300000	usd
CY2021	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	49475000	usd
CY2023	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	101685000	usd
CY2022	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	68015000	usd
CY2021	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	60766000	usd
CY2023	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	235727000	usd
CY2022	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	136832000	usd
CY2021	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	243522000	usd
CY2023	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-1985000	usd
CY2022	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	25878000	usd
CY2021	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-79812000	usd
CY2023	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-558000	usd
CY2022	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	14634000	usd
CY2021	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-25981000	usd
CY2023	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-12715000	usd
CY2022	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-4076000	usd
CY2021	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-5576000	usd
CY2023	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-15258000	usd
CY2022	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	36436000	usd
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-111369000	usd
CY2023	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	220469000	usd
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	173268000	usd
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	132153000	usd
CY2023	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.2100
CY2022	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.2100
CY2021	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.2100
CY2023	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.0240
CY2022	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.0271
CY2021	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.0290
CY2023	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.0365
CY2022	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.0396
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.0509
CY2023	msci	Effective Income Tax Rate Reconciliation Foreign Derived Intangible Income Net Of Global Intangible Low Taxed Income EffectiveIncomeTaxRateReconciliationForeignDerivedIntangibleIncomeNetOfGlobalIntangibleLowTaxedIncome	-0.0015
CY2022	msci	Effective Income Tax Rate Reconciliation Foreign Derived Intangible Income Net Of Global Intangible Low Taxed Income EffectiveIncomeTaxRateReconciliationForeignDerivedIntangibleIncomeNetOfGlobalIntangibleLowTaxedIncome	-0.0050
CY2021	msci	Effective Income Tax Rate Reconciliation Foreign Derived Intangible Income Net Of Global Intangible Low Taxed Income EffectiveIncomeTaxRateReconciliationForeignDerivedIntangibleIncomeNetOfGlobalIntangibleLowTaxedIncome	-0.0109
CY2023	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	0.0053
CY2022	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	0.0046
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	0.0059
CY2023	us-gaap	Effective Income Tax Rate Reconciliation Tax Exempt Income EffectiveIncomeTaxRateReconciliationTaxExemptIncome	-0.0158
CY2022	us-gaap	Effective Income Tax Rate Reconciliation Tax Exempt Income EffectiveIncomeTaxRateReconciliationTaxExemptIncome	0
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Tax Exempt Income EffectiveIncomeTaxRateReconciliationTaxExemptIncome	0
CY2023	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0
CY2022	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0
CY2023	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Percent EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitPercent	-0.0084
CY2022	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Percent EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitPercent	-0.0272
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Percent EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitPercent	-0.0265
CY2023	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.0055
CY2022	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.0053
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.0092
CY2023	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.1610
CY2022	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.1660
CY2021	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.1540
CY2023Q4	us-gaap	Deferred Tax Assets Deferred Income DeferredTaxAssetsDeferredIncome	65370000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Deferred Income DeferredTaxAssetsDeferredIncome	54263000	usd
CY2023Q4	msci	Deferred Tax Assets Capitalized Cost DeferredTaxAssetsCapitalizedCost	52098000	usd
CY2022Q4	msci	Deferred Tax Assets Capitalized Cost DeferredTaxAssetsCapitalizedCost	41176000	usd
CY2023Q4	msci	Deferred Tax Assets Lease Liabilities DeferredTaxAssetsLeaseLiabilities	33321000	usd
CY2022Q4	msci	Deferred Tax Assets Lease Liabilities DeferredTaxAssetsLeaseLiabilities	35425000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	28781000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	24318000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Goodwill And Intangible Assets DeferredTaxAssetsGoodwillAndIntangibleAssets	11586000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Goodwill And Intangible Assets DeferredTaxAssetsGoodwillAndIntangibleAssets	0	usd
CY2023Q4	us-gaap	Deferred Tax Asset Interest Carryforward DeferredTaxAssetInterestCarryforward	10093000	usd
CY2022Q4	us-gaap	Deferred Tax Asset Interest Carryforward DeferredTaxAssetInterestCarryforward	11283000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	6520000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	18000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	7752000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	13128000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	215521000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	179611000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	26000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	31000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	215495000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	179580000	usd
CY2023Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	130231000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	132705000	usd
CY2023Q4	msci	Deferred Tax Liabilities Property Equipment And Leasehold Improvements Net DeferredTaxLiabilitiesPropertyEquipmentAndLeaseholdImprovementsNet	35203000	usd
CY2022Q4	msci	Deferred Tax Liabilities Property Equipment And Leasehold Improvements Net DeferredTaxLiabilitiesPropertyEquipmentAndLeaseholdImprovementsNet	15169000	usd
CY2023Q4	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	26016000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	28213000	usd
CY2023Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	7796000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	0	usd
CY2023Q4	us-gaap	Deferred Tax Liabilities Undistributed Foreign Earnings DeferredTaxLiabilitiesUndistributedForeignEarnings	2203000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities Undistributed Foreign Earnings DeferredTaxLiabilitiesUndistributedForeignEarnings	2162000	usd
CY2023Q4	msci	Deferred Tax Liabilities Compensation And Benefits Pensions DeferredTaxLiabilitiesCompensationAndBenefitsPensions	0	usd
CY2022Q4	msci	Deferred Tax Liabilities Compensation And Benefits Pensions DeferredTaxLiabilitiesCompensationAndBenefitsPensions	1222000	usd
CY2023Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	201449000	usd
CY2022Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	179471000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	14046000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	109000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	30000.00	usd
CY2022Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	32500000	usd
CY2021Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	33000000.0	usd
CY2023	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Expense UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense	2100000	usd
CY2022	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Expense UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense	-500000	usd
CY2023	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	643492000	usd
CY2022	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	525328000	usd
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	417679000	usd
CY2023	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	725569000	usd
CY2022	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	518513000	usd
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	440457000	usd
CY2023	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	1369061000	usd
CY2022	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	1043841000	usd
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	858136000	usd
CY2023Q4	us-gaap	Decrease In Unrecognized Tax Benefits Is Reasonably Possible DecreaseInUnrecognizedTaxBenefitsIsReasonablyPossible	23000000	usd
CY2022Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	32523000	usd
CY2021Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	33039000	usd
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	16621000	usd
CY2023	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	5028000	usd
CY2022	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	640000	usd
CY2021	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	511000	usd
CY2023	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	1961000	usd
CY2022	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	3807000	usd
CY2021	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	20321000	usd
CY2023	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	0	usd
CY2022	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	597000	usd
CY2021	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	0	usd
CY2023	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	5711000	usd
CY2022	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	4366000	usd
CY2021	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	0	usd
CY2023	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	0	usd
CY2022	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	0	usd
CY2021	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	4414000	usd
CY2023Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	33801000	usd
CY2022Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	32523000	usd
CY2021Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	33039000	usd
CY2023Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	33800000	usd
CY2021	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Expense UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense	0	usd
CY2023	us-gaap	Unrecognized Tax Benefits Income Tax Penalties Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesExpense	1300000	usd
CY2022	us-gaap	Unrecognized Tax Benefits Income Tax Penalties Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesExpense	-300000	usd
CY2021	us-gaap	Unrecognized Tax Benefits Income Tax Penalties Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesExpense	300000	usd
CY2023Q4	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	2500000	usd
CY2022Q4	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	400000	usd
CY2021Q4	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	900000	usd
CY2023	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	5	segment
CY2023	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	4	segment
CY2023	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	2528920000	usd
CY2022	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	2248598000	usd
CY2021	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	2043544000	usd
CY2023	msci	Operating Segment Profitability OperatingSegmentProfitability	1522951000	usd
CY2022	msci	Operating Segment Profitability OperatingSegmentProfitability	1329671000	usd
CY2021	msci	Operating Segment Profitability OperatingSegmentProfitability	1196790000	usd
CY2023	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	114429000	usd
CY2022	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	91079000	usd
CY2021	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	80592000	usd
CY2023	us-gaap	Depreciation Depreciation	21009000	usd
CY2022	us-gaap	Depreciation Depreciation	26893000	usd
CY2021	us-gaap	Depreciation Depreciation	28901000	usd
CY2023	msci	Impairment Related To Sublease Of Leased Property ImpairmentRelatedToSubleaseOfLeasedProperty	477000	usd
CY2022	msci	Impairment Related To Sublease Of Leased Property ImpairmentRelatedToSubleaseOfLeasedProperty	0	usd
CY2021	msci	Impairment Related To Sublease Of Leased Property ImpairmentRelatedToSubleaseOfLeasedProperty	7702000	usd
CY2023	msci	Business Combination Integration Related Costs And Transaction Costs BusinessCombinationIntegrationRelatedCostsAndTransactionCosts	2427000	usd
CY2022	msci	Business Combination Integration Related Costs And Transaction Costs BusinessCombinationIntegrationRelatedCostsAndTransactionCosts	4059000	usd
CY2021	msci	Business Combination Integration Related Costs And Transaction Costs BusinessCombinationIntegrationRelatedCostsAndTransactionCosts	6870000	usd
CY2023	us-gaap	Operating Income Loss OperatingIncomeLoss	1384609000	usd
CY2022	us-gaap	Operating Income Loss OperatingIncomeLoss	1207640000	usd
CY2021	us-gaap	Operating Income Loss OperatingIncomeLoss	1072725000	usd
CY2023	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-15548000	usd
CY2022	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-163799000	usd
CY2021	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-214589000	usd
CY2023	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	220469000	usd
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	173268000	usd
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	132153000	usd
CY2023	us-gaap	Net Income Loss NetIncomeLoss	1148592000	usd
CY2022	us-gaap	Net Income Loss NetIncomeLoss	870573000	usd
CY2021	us-gaap	Net Income Loss NetIncomeLoss	725983000	usd
CY2023	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	2528920000	usd
CY2022	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	2248598000	usd
CY2021	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	2043544000	usd
CY2023Q4	us-gaap	Noncurrent Assets NoncurrentAssets	289126000	usd
CY2022Q4	us-gaap	Noncurrent Assets NoncurrentAssets	267811000	usd
CY2023Q4	ecd	Rule10b51 Arr Adopted Flag Rule10b51ArrAdoptedFlag	false
CY2023Q4	ecd	Non Rule10b51 Arr Adopted Flag NonRule10b51ArrAdoptedFlag	false
CY2023Q4	ecd	Rule10b51 Arr Trmntd Flag Rule10b51ArrTrmntdFlag	false
CY2023Q4	ecd	Non Rule10b51 Arr Trmntd Flag NonRule10b51ArrTrmntdFlag	false

Files In Submission

Name	View Source	Status
0001408198-24-000030-index-headers.html	Edgar Link	pending
0001408198-24-000030-index.html	Edgar Link	pending
0001408198-24-000030.txt	Edgar Link	pending
0001408198-24-000030-xbrl.zip	Edgar Link	pending
exhibit_1022x2024omnibusrs.htm	Edgar Link	pending
exhibit_1023x2024omnibusps.htm	Edgar Link	pending
exhibit_1024x2024omnibusps.htm	Edgar Link	pending
ex_101xdirectorcomp2.htm	Edgar Link	pending
ex_105xmsci-executivecicse.htm	Edgar Link	pending
ex_10x9xaipxrevised2023cle.htm	Edgar Link	pending
ex_21x12023.htm	Edgar Link	pending
ex_3x2xmscibylawsx2024upda.htm	Edgar Link	pending
ex_97x1xmscifinancialstate.htm	Edgar Link	pending
Financial_Report.xlsx	Edgar Link	pending
MetaLinks.json	Edgar Link	pending
msci-20221231x10kex2312.htm	Edgar Link	pending
msci-20221231x10kex3112.htm	Edgar Link	pending
msci-20221231x10kex3122.htm	Edgar Link	pending
msci-20221231x10kex3212.htm	Edgar Link	pending
msci-20231231.htm	Edgar Link	pending
msci-20231231.xsd	Edgar Link	pending
msci-20231231_g1.gif	Edgar Link	pending
msci-20231231_g2.jpg	Edgar Link	pending
R1.htm	Edgar Link	pending
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msci-20231231_cal.xml	Edgar Link	unprocessable
msci-20231231_def.xml	Edgar Link	unprocessable
msci-20231231_lab.xml	Edgar Link	unprocessable
msci-20231231_pre.xml	Edgar Link	unprocessable
msci-20231231_htm.xml	Edgar Link	completed
R17.htm	Edgar Link	pending
R18.htm	Edgar Link	pending
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R2.htm	Edgar Link	pending
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R87.htm	Edgar Link	pending
R9.htm	Edgar Link	pending
report.css	Edgar Link	pending
Show.js	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable

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$MSCI
MSCI Inc. Stock $msci

2024 Q1 Form 10-K Financial Statement

#000140819824000030 Filed on February 09, 2024

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$MSCI MSCI Inc. Stock $msci

2024 Q1 Form 10-K Financial Statement

#000140819824000030 Filed on February 09, 2024

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$MSCI
MSCI Inc. Stock $msci