| | | | | | | | | | | | | | | | | | | | | |
<?xml version="1.0" encoding="windows-1252"?> |
<FilingSummary> |
| <Version> 3.24.1.u1 </Version> |
| <ProcessingTime/> |
| <ReportFormat> html </ReportFormat> |
| <ContextCount> 385 </ContextCount> |
| <ElementCount> 293 </ElementCount> |
| <EntityCount> 1 </EntityCount> |
| <FootnotesReported> true </FootnotesReported> |
| <SegmentCount> 98 </SegmentCount> |
| <ScenarioCount> 0 </ScenarioCount> |
| <TuplesReported> false </TuplesReported> |
| <UnitCount> 9 </UnitCount> |
| <MyReports> |
| | <Report instance="spgi-20240331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R1.htm </HtmlFileName> |
| | | <LongName> 0000001 - Document - Cover Page </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.spglobal.com/role/CoverPage </Role> |
| | | <ShortName> Cover Page </ShortName> |
| | | <MenuCategory> Cover </MenuCategory> |
| | | <Position> 1 </Position> |
| | | </Report> |
| | <Report instance="spgi-20240331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R2.htm </HtmlFileName> |
| | | <LongName> 0000002 - Statement - Consolidated Statements of Income </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.spglobal.com/role/ConsolidatedStatementsofIncome </Role> |
| | | <ShortName> Consolidated Statements of Income </ShortName> |
| | | <MenuCategory> Statements </MenuCategory> |
| | | <Position> 2 </Position> |
| | | </Report> |
| | <Report instance="spgi-20240331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R3.htm </HtmlFileName> |
| | | <LongName> 0000003 - Statement - Consolidated Statements of Comprehensive Income </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.spglobal.com/role/ConsolidatedStatementsofComprehensiveIncome </Role> |
| | | <ShortName> Consolidated Statements of Comprehensive Income </ShortName> |
| | | <MenuCategory> Statements </MenuCategory> |
| | | <Position> 3 </Position> |
| | | </Report> |
| | <Report instance="spgi-20240331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R4.htm </HtmlFileName> |
| | | <LongName> 0000004 - Statement - Consolidated Balance Sheets </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.spglobal.com/role/ConsolidatedBalanceSheets </Role> |
| | | <ShortName> Consolidated Balance Sheets </ShortName> |
| | | <MenuCategory> Statements </MenuCategory> |
| | | <Position> 4 </Position> |
| | | </Report> |
| | <Report instance="spgi-20240331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R5.htm </HtmlFileName> |
| | | <LongName> 0000005 - Statement - Consolidated Balance Sheets (Parenthetical) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.spglobal.com/role/ConsolidatedBalanceSheetsParenthetical </Role> |
| | | <ShortName> Consolidated Balance Sheets (Parenthetical) </ShortName> |
| | | <MenuCategory> Statements </MenuCategory> |
| | | <Position> 5 </Position> |
| | | </Report> |
| | <Report instance="spgi-20240331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R6.htm </HtmlFileName> |
| | | <LongName> 0000006 - Statement - Consolidated Statements of Cash Flows </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.spglobal.com/role/ConsolidatedStatementsofCashFlows </Role> |
| | | <ShortName> Consolidated Statements of Cash Flows </ShortName> |
| | | <MenuCategory> Statements </MenuCategory> |
| | | <Position> 6 </Position> |
| | | </Report> |
| | <Report instance="spgi-20240331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R7.htm </HtmlFileName> |
| | | <LongName> 0000007 - Statement - Consolidated Statements of Equity </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.spglobal.com/role/ConsolidatedStatementsofEquity </Role> |
| | | <ShortName> Consolidated Statements of Equity </ShortName> |
| | | <MenuCategory> Statements </MenuCategory> |
| | | <Position> 7 </Position> |
| | | </Report> |
| | <Report instance="spgi-20240331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R8.htm </HtmlFileName> |
| | | <LongName> 0000008 - Statement - Consolidated Statements of Equity (Parenthetical) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.spglobal.com/role/ConsolidatedStatementsofEquityParenthetical </Role> |
| | | <ShortName> Consolidated Statements of Equity (Parenthetical) </ShortName> |
| | | <MenuCategory> Statements </MenuCategory> |
| | | <Position> 8 </Position> |
| | | </Report> |
| | <Report instance="spgi-20240331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R9.htm </HtmlFileName> |
| | | <LongName> 0000009 - Disclosure - Nature of Operations and Basis of Presentation </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.spglobal.com/role/NatureofOperationsandBasisofPresentation </Role> |
| | | <ShortName> Nature of Operations and Basis of Presentation </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 9 </Position> |
| | | </Report> |
| | <Report instance="spgi-20240331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R10.htm </HtmlFileName> |
| | | <LongName> 0000010 - Disclosure - Acquisitions and Divestitures </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.spglobal.com/role/AcquisitionsandDivestitures </Role> |
| | | <ShortName> Acquisitions and Divestitures </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 10 </Position> |
| | | </Report> |
| | <Report instance="spgi-20240331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R11.htm </HtmlFileName> |
| | | <LongName> 0000011 - Disclosure - Income Taxes </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.spglobal.com/role/IncomeTaxes </Role> |
| | | <ShortName> Income Taxes </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 11 </Position> |
| | | </Report> |
| | <Report instance="spgi-20240331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R12.htm </HtmlFileName> |
| | | <LongName> 0000012 - Disclosure - Debt </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.spglobal.com/role/Debt </Role> |
| | | <ShortName> Debt </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 12 </Position> |
| | | </Report> |
| | <Report instance="spgi-20240331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R13.htm </HtmlFileName> |
| | | <LongName> 0000013 - Disclosure - Derivative Instruments </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.spglobal.com/role/DerivativeInstruments </Role> |
| | | <ShortName> Derivative Instruments </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 13 </Position> |
| | | </Report> |
| | <Report instance="spgi-20240331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R14.htm </HtmlFileName> |
| | | <LongName> 0000014 - Disclosure - Employee Benefits </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.spglobal.com/role/EmployeeBenefits </Role> |
| | | <ShortName> Employee Benefits </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 14 </Position> |
| | | </Report> |
| | <Report instance="spgi-20240331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R15.htm </HtmlFileName> |
| | | <LongName> 0000015 - Disclosure - Stock-Based Compensation </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.spglobal.com/role/StockBasedCompensation </Role> |
| | | <ShortName> Stock-Based Compensation </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 15 </Position> |
| | | </Report> |
| | <Report instance="spgi-20240331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R16.htm </HtmlFileName> |
| | | <LongName> 0000016 - Disclosure - Equity </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.spglobal.com/role/Equity </Role> |
| | | <ShortName> Equity </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 16 </Position> |
| | | </Report> |
| | <Report instance="spgi-20240331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R17.htm </HtmlFileName> |
| | | <LongName> 0000017 - Disclosure - Earnings Per Share </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.spglobal.com/role/EarningsPerShare </Role> |
| | | <ShortName> Earnings Per Share </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 17 </Position> |
| | | </Report> |
| | <Report instance="spgi-20240331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R18.htm </HtmlFileName> |
| | | <LongName> 0000018 - Disclosure - Restructuring </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.spglobal.com/role/Restructuring </Role> |
| | | <ShortName> Restructuring </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 18 </Position> |
| | | </Report> |
| | <Report instance="spgi-20240331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R19.htm </HtmlFileName> |
| | | <LongName> 0000019 - Disclosure - Segment and Related Information </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.spglobal.com/role/SegmentandRelatedInformation </Role> |
| | | <ShortName> Segment and Related Information </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 19 </Position> |
| | | </Report> |
| | <Report instance="spgi-20240331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R20.htm </HtmlFileName> |
| | | <LongName> 0000020 - Disclosure - Commitments and Contingencies </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.spglobal.com/role/CommitmentsandContingencies </Role> |
| | | <ShortName> Commitments and Contingencies </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 20 </Position> |
| | | </Report> |
| | <Report instance="spgi-20240331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R21.htm </HtmlFileName> |
| | | <LongName> 0000021 - Disclosure - Recently Issued or Adopted Accounting Standards </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.spglobal.com/role/RecentlyIssuedorAdoptedAccountingStandards </Role> |
| | | <ShortName> Recently Issued or Adopted Accounting Standards </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 21 </Position> |
| | | </Report> |
| | <Report instance="spgi-20240331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R22.htm </HtmlFileName> |
| | | <LongName> 995410 - Disclosure - Pay vs Performance Disclosure </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://xbrl.sec.gov/ecd/role/PvpDisclosure </Role> |
| | | <ShortName> Pay vs Performance Disclosure </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 22 </Position> |
| | | </Report> |
| | <Report instance="spgi-20240331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R23.htm </HtmlFileName> |
| | | <LongName> 995445 - Disclosure - Insider Trading Arrangements </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements </Role> |
| | | <ShortName> Insider Trading Arrangements </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 23 </Position> |
| | | </Report> |
| | <Report instance="spgi-20240331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R24.htm </HtmlFileName> |
| | | <LongName> 9954471 - Disclosure - Nature of Operations and Basis of Presentation (Policies) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.spglobal.com/role/NatureofOperationsandBasisofPresentationPolicies </Role> |
| | | <ShortName> Nature of Operations and Basis of Presentation (Policies) </ShortName> |
| | | <MenuCategory> Policies </MenuCategory> |
| | | <ParentRole> http://www.spglobal.com/role/RecentlyIssuedorAdoptedAccountingStandards </ParentRole> |
| | | <Position> 24 </Position> |
| | | </Report> |
| | <Report instance="spgi-20240331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R25.htm </HtmlFileName> |
| | | <LongName> 9954472 - Disclosure - Nature of Operations and Basis of Presentation (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.spglobal.com/role/NatureofOperationsandBasisofPresentationTables </Role> |
| | | <ShortName> Nature of Operations and Basis of Presentation (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.spglobal.com/role/NatureofOperationsandBasisofPresentation </ParentRole> |
| | | <Position> 25 </Position> |
| | | </Report> |
| | <Report instance="spgi-20240331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R26.htm </HtmlFileName> |
| | | <LongName> 9954473 - Disclosure - Acquisitions and Divestitures (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.spglobal.com/role/AcquisitionsandDivestituresTables </Role> |
| | | <ShortName> Acquisitions and Divestitures (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.spglobal.com/role/AcquisitionsandDivestitures </ParentRole> |
| | | <Position> 26 </Position> |
| | | </Report> |
| | <Report instance="spgi-20240331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R27.htm </HtmlFileName> |
| | | <LongName> 9954474 - Disclosure - Debt (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.spglobal.com/role/DebtTables </Role> |
| | | <ShortName> Debt (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.spglobal.com/role/Debt </ParentRole> |
| | | <Position> 27 </Position> |
| | | </Report> |
| | <Report instance="spgi-20240331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R28.htm </HtmlFileName> |
| | | <LongName> 9954475 - Disclosure - Derivative Instruments (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.spglobal.com/role/DerivativeInstrumentsTables </Role> |
| | | <ShortName> Derivative Instruments (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.spglobal.com/role/DerivativeInstruments </ParentRole> |
| | | <Position> 28 </Position> |
| | | </Report> |
| | <Report instance="spgi-20240331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R29.htm </HtmlFileName> |
| | | <LongName> 9954476 - Disclosure - Employee Benefits (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.spglobal.com/role/EmployeeBenefitsTables </Role> |
| | | <ShortName> Employee Benefits (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.spglobal.com/role/EmployeeBenefits </ParentRole> |
| | | <Position> 29 </Position> |
| | | </Report> |
| | <Report instance="spgi-20240331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R30.htm </HtmlFileName> |
| | | <LongName> 9954477 - Disclosure - Equity (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.spglobal.com/role/EquityTables </Role> |
| | | <ShortName> Equity (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.spglobal.com/role/Equity </ParentRole> |
| | | <Position> 30 </Position> |
| | | </Report> |
| | <Report instance="spgi-20240331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R31.htm </HtmlFileName> |
| | | <LongName> 9954478 - Disclosure - Earnings Per Share (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.spglobal.com/role/EarningsPerShareTables </Role> |
| | | <ShortName> Earnings Per Share (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.spglobal.com/role/EarningsPerShare </ParentRole> |
| | | <Position> 31 </Position> |
| | | </Report> |
| | <Report instance="spgi-20240331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R32.htm </HtmlFileName> |
| | | <LongName> 9954479 - Disclosure - Restructuring (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.spglobal.com/role/RestructuringTables </Role> |
| | | <ShortName> Restructuring (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.spglobal.com/role/Restructuring </ParentRole> |
| | | <Position> 32 </Position> |
| | | </Report> |
| | <Report instance="spgi-20240331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R33.htm </HtmlFileName> |
| | | <LongName> 9954480 - Disclosure - Segment and Related Information (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.spglobal.com/role/SegmentandRelatedInformationTables </Role> |
| | | <ShortName> Segment and Related Information (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.spglobal.com/role/SegmentandRelatedInformation </ParentRole> |
| | | <Position> 33 </Position> |
| | | </Report> |
| | <Report instance="spgi-20240331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R34.htm </HtmlFileName> |
| | | <LongName> 9954481 - Disclosure - Commitments and Contingencies (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.spglobal.com/role/CommitmentsandContingenciesTables </Role> |
| | | <ShortName> Commitments and Contingencies (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.spglobal.com/role/CommitmentsandContingencies </ParentRole> |
| | | <Position> 34 </Position> |
| | | </Report> |
| | <Report instance="spgi-20240331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R35.htm </HtmlFileName> |
| | | <LongName> 9954482 - Disclosure - Nature of Operations and Basis of Presentation - Narrative (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.spglobal.com/role/NatureofOperationsandBasisofPresentationNarrativeDetails </Role> |
| | | <ShortName> Nature of Operations and Basis of Presentation - Narrative (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 35 </Position> |
| | | </Report> |
| | <Report instance="spgi-20240331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R36.htm </HtmlFileName> |
| | | <LongName> 9954483 - Disclosure - Nature of Operations and Basis of Presentation - Remaining Performance Obligations (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.spglobal.com/role/NatureofOperationsandBasisofPresentationRemainingPerformanceObligationsDetails </Role> |
| | | <ShortName> Nature of Operations and Basis of Presentation - Remaining Performance Obligations (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 36 </Position> |
| | | </Report> |
| | <Report instance="spgi-20240331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R37.htm </HtmlFileName> |
| | | <LongName> 9954484 - Disclosure - Nature of Operations and Basis of Presentation - Schedule of Components of Other (Income) Expense, Net (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.spglobal.com/role/NatureofOperationsandBasisofPresentationScheduleofComponentsofOtherIncomeExpenseNetDetails </Role> |
| | | <ShortName> Nature of Operations and Basis of Presentation - Schedule of Components of Other (Income) Expense, Net (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 37 </Position> |
| | | </Report> |
| | <Report instance="spgi-20240331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R38.htm </HtmlFileName> |
| | | <LongName> 9954485 - Disclosure - Acquisitions and Divestitures - Narrative (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.spglobal.com/role/AcquisitionsandDivestituresNarrativeDetails </Role> |
| | | <ShortName> Acquisitions and Divestitures - Narrative (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 38 </Position> |
| | | </Report> |
| | <Report instance="spgi-20240331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R39.htm </HtmlFileName> |
| | | <LongName> 9954486 - Disclosure - Acquisitions and Divestitures - Schedule of Components of Assets and Liabilities Held for Sale (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.spglobal.com/role/AcquisitionsandDivestituresScheduleofComponentsofAssetsandLiabilitiesHeldforSaleDetails </Role> |
| | | <ShortName> Acquisitions and Divestitures - Schedule of Components of Assets and Liabilities Held for Sale (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 39 </Position> |
| | | </Report> |
| | <Report instance="spgi-20240331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R40.htm </HtmlFileName> |
| | | <LongName> 9954487 - Disclosure - Income Taxes - Narrative (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.spglobal.com/role/IncomeTaxesNarrativeDetails </Role> |
| | | <ShortName> Income Taxes - Narrative (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 40 </Position> |
| | | </Report> |
| | <Report instance="spgi-20240331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R41.htm </HtmlFileName> |
| | | <LongName> 9954488 - Disclosure - Debt - Schedule of Short-term and Long-term Debt Outstanding (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.spglobal.com/role/DebtScheduleofShorttermandLongtermDebtOutstandingDetails </Role> |
| | | <ShortName> Debt - Schedule of Short-term and Long-term Debt Outstanding (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 41 </Position> |
| | | </Report> |
| | <Report instance="spgi-20240331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R42.htm </HtmlFileName> |
| | | <LongName> 9954489 - Disclosure - Debt - Narrative (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.spglobal.com/role/DebtNarrativeDetails </Role> |
| | | <ShortName> Debt - Narrative (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 42 </Position> |
| | | </Report> |
| | <Report instance="spgi-20240331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R43.htm </HtmlFileName> |
| | | <LongName> 9954490 - Disclosure - Derivative Instruments - Narrative (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.spglobal.com/role/DerivativeInstrumentsNarrativeDetails </Role> |
| | | <ShortName> Derivative Instruments - Narrative (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 43 </Position> |
| | | </Report> |
| | <Report instance="spgi-20240331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R44.htm </HtmlFileName> |
| | | <LongName> 9954491 - Disclosure - Derivative Instruments - Schedule of Location and Fair Value Amounts of Cash Flow Hedges (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.spglobal.com/role/DerivativeInstrumentsScheduleofLocationandFairValueAmountsofCashFlowHedgesDetails </Role> |
| | | <ShortName> Derivative Instruments - Schedule of Location and Fair Value Amounts of Cash Flow Hedges (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 44 </Position> |
| | | </Report> |
| | <Report instance="spgi-20240331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R45.htm </HtmlFileName> |
| | | <LongName> 9954492 - Disclosure - Derivative Instruments - Schedule of Pre-tax Gains (Losses) on Cash Flow Hedges (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.spglobal.com/role/DerivativeInstrumentsScheduleofPretaxGainsLossesonCashFlowHedgesDetails </Role> |
| | | <ShortName> Derivative Instruments - Schedule of Pre-tax Gains (Losses) on Cash Flow Hedges (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 45 </Position> |
| | | </Report> |
| | <Report instance="spgi-20240331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R46.htm </HtmlFileName> |
| | | <LongName> 9954493 - Disclosure - Derivative Instruments - Schedule of Cash Flow Hedges included in AOCI (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.spglobal.com/role/DerivativeInstrumentsScheduleofCashFlowHedgesincludedinAOCIDetails </Role> |
| | | <ShortName> Derivative Instruments - Schedule of Cash Flow Hedges included in AOCI (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 46 </Position> |
| | | </Report> |
| | <Report instance="spgi-20240331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R47.htm </HtmlFileName> |
| | | <LongName> 9954494 - Disclosure - Employee Benefits - Schedule of Net Periodic Benefit Cost (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.spglobal.com/role/EmployeeBenefitsScheduleofNetPeriodicBenefitCostDetails </Role> |
| | | <ShortName> Employee Benefits - Schedule of Net Periodic Benefit Cost (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 47 </Position> |
| | | </Report> |
| | <Report instance="spgi-20240331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R48.htm </HtmlFileName> |
| | | <LongName> 9954495 - Disclosure - Employee Benefits - Narrative (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.spglobal.com/role/EmployeeBenefitsNarrativeDetails </Role> |
| | | <ShortName> Employee Benefits - Narrative (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 48 </Position> |
| | | </Report> |
| | <Report instance="spgi-20240331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R49.htm </HtmlFileName> |
| | | <LongName> 9954496 - Disclosure - Stock-Based Compensation - Narrative (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.spglobal.com/role/StockBasedCompensationNarrativeDetails </Role> |
| | | <ShortName> Stock-Based Compensation - Narrative (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 49 </Position> |
| | | </Report> |
| | <Report instance="spgi-20240331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R50.htm </HtmlFileName> |
| | | <LongName> 9954497 - Disclosure - Equity - Dividends and Stock Repurchases (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.spglobal.com/role/EquityDividendsandStockRepurchasesDetails </Role> |
| | | <ShortName> Equity - Dividends and Stock Repurchases (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 50 </Position> |
| | | </Report> |
| | <Report instance="spgi-20240331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R51.htm </HtmlFileName> |
| | | <LongName> 9954498 - Disclosure - Equity - Schedule of Accelerated Share Repurchase Agreements (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.spglobal.com/role/EquityScheduleofAcceleratedShareRepurchaseAgreementsDetails </Role> |
| | | <ShortName> Equity - Schedule of Accelerated Share Repurchase Agreements (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 51 </Position> |
| | | </Report> |
| | <Report instance="spgi-20240331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R52.htm </HtmlFileName> |
| | | <LongName> 9954499 - Disclosure - Equity - Redeemable Noncontrolling Interests (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.spglobal.com/role/EquityRedeemableNoncontrollingInterestsDetails </Role> |
| | | <ShortName> Equity - Redeemable Noncontrolling Interests (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 52 </Position> |
| | | </Report> |
| | <Report instance="spgi-20240331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R53.htm </HtmlFileName> |
| | | <LongName> 9954500 - Disclosure - Equity - Schedule of Redeemable Noncontrolling Interest Rollforward (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.spglobal.com/role/EquityScheduleofRedeemableNoncontrollingInterestRollforwardDetails </Role> |
| | | <ShortName> Equity - Schedule of Redeemable Noncontrolling Interest Rollforward (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 53 </Position> |
| | | </Report> |
| | <Report instance="spgi-20240331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R54.htm </HtmlFileName> |
| | | <LongName> 9954501 - Disclosure - Equity - Schedule of Changes in the Components of Accumulated Other Comprehensive Loss (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.spglobal.com/role/EquityScheduleofChangesintheComponentsofAccumulatedOtherComprehensiveLossDetails </Role> |
| | | <ShortName> Equity - Schedule of Changes in the Components of Accumulated Other Comprehensive Loss (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 54 </Position> |
| | | </Report> |
| | <Report instance="spgi-20240331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R55.htm </HtmlFileName> |
| | | <LongName> 9954502 - Disclosure - Earnings Per Share - (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.spglobal.com/role/EarningsPerShareDetails </Role> |
| | | <ShortName> Earnings Per Share - (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.spglobal.com/role/EarningsPerShareTables </ParentRole> |
| | | <Position> 55 </Position> |
| | | </Report> |
| | <Report instance="spgi-20240331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R56.htm </HtmlFileName> |
| | | <LongName> 9954503 - Disclosure - Restructuring - Narrative (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.spglobal.com/role/RestructuringNarrativeDetails </Role> |
| | | <ShortName> Restructuring - Narrative (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 56 </Position> |
| | | </Report> |
| | <Report instance="spgi-20240331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R57.htm </HtmlFileName> |
| | | <LongName> 9954504 - Disclosure - Restructuring - Schedule of Initial Restructuring Charge Recorded and the Ending Reserve Balance (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.spglobal.com/role/RestructuringScheduleofInitialRestructuringChargeRecordedandtheEndingReserveBalanceDetails </Role> |
| | | <ShortName> Restructuring - Schedule of Initial Restructuring Charge Recorded and the Ending Reserve Balance (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 57 </Position> |
| | | </Report> |
| | <Report instance="spgi-20240331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R58.htm </HtmlFileName> |
| | | <LongName> 9954505 - Disclosure - Segment and Related Information - Narrative (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.spglobal.com/role/SegmentandRelatedInformationNarrativeDetails </Role> |
| | | <ShortName> Segment and Related Information - Narrative (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 58 </Position> |
| | | </Report> |
| | <Report instance="spgi-20240331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R59.htm </HtmlFileName> |
| | | <LongName> 9954506 - Disclosure - Segment and Related Information - Schedule of Operating Results by Segment (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.spglobal.com/role/SegmentandRelatedInformationScheduleofOperatingResultsbySegmentDetails </Role> |
| | | <ShortName> Segment and Related Information - Schedule of Operating Results by Segment (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 59 </Position> |
| | | </Report> |
| | <Report instance="spgi-20240331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R60.htm </HtmlFileName> |
| | | <LongName> 9954507 - Disclosure - Segment and Related Information - Schedule of Revenue Disaggregated by Type (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.spglobal.com/role/SegmentandRelatedInformationScheduleofRevenueDisaggregatedbyTypeDetails </Role> |
| | | <ShortName> Segment and Related Information - Schedule of Revenue Disaggregated by Type (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 60 </Position> |
| | | </Report> |
| | <Report instance="spgi-20240331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R61.htm </HtmlFileName> |
| | | <LongName> 9954508 - Disclosure - Segment and Related Information - Schedule of Revenue by Geographic Region (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.spglobal.com/role/SegmentandRelatedInformationScheduleofRevenuebyGeographicRegionDetails </Role> |
| | | <ShortName> Segment and Related Information - Schedule of Revenue by Geographic Region (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 61 </Position> |
| | | </Report> |
| | <Report instance="spgi-20240331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R62.htm </HtmlFileName> |
| | | <LongName> 9954509 - Disclosure - Commitments and Contingencies - Narrative (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.spglobal.com/role/CommitmentsandContingenciesNarrativeDetails </Role> |
| | | <ShortName> Commitments and Contingencies - Narrative (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 62 </Position> |
| | | </Report> |
| | <Report instance="spgi-20240331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R63.htm </HtmlFileName> |
| | | <LongName> 9954510 - Disclosure - Commitments and Contingencies - Schedule of Location and Amounts of Leases (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.spglobal.com/role/CommitmentsandContingenciesScheduleofLocationandAmountsofLeasesDetails </Role> |
| | | <ShortName> Commitments and Contingencies - Schedule of Location and Amounts of Leases (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 63 </Position> |
| | | </Report> |
| | <Report instance="spgi-20240331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R64.htm </HtmlFileName> |
| | | <LongName> 9954511 - Disclosure - Commitments and Contingencies - Schedule of Components of Lease Expense (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.spglobal.com/role/CommitmentsandContingenciesScheduleofComponentsofLeaseExpenseDetails </Role> |
| | | <ShortName> Commitments and Contingencies - Schedule of Components of Lease Expense (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 64 </Position> |
| | | </Report> |
| | <Report instance="spgi-20240331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R65.htm </HtmlFileName> |
| | | <LongName> 9954512 - Disclosure - Commitments and Contingencies - Schedule of Supplemental Cash Flow Information (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.spglobal.com/role/CommitmentsandContingenciesScheduleofSupplementalCashFlowInformationDetails </Role> |
| | | <ShortName> Commitments and Contingencies - Schedule of Supplemental Cash Flow Information (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 65 </Position> |
| | | </Report> |
| | <Report instance="spgi-20240331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R66.htm </HtmlFileName> |
| | | <LongName> 9954513 - Disclosure - Commitments and Contingencies - Schedule of Lease Term and Discount Rate (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.spglobal.com/role/CommitmentsandContingenciesScheduleofLeaseTermandDiscountRateDetails </Role> |
| | | <ShortName> Commitments and Contingencies - Schedule of Lease Term and Discount Rate (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 66 </Position> |
| | | </Report> |
| | <Report instance="spgi-20240331.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R67.htm </HtmlFileName> |
| | | <LongName> 9954514 - Disclosure - Commitments and Contingencies - Schedule of Maturities of Operating Lease Liabilities (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.spglobal.com/role/CommitmentsandContingenciesScheduleofMaturitiesofOperatingLeaseLiabilitiesDetails </Role> |
| | | <ShortName> Commitments and Contingencies - Schedule of Maturities of Operating Lease Liabilities (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 67 </Position> |
| | | </Report> |
| | <Report> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <LongName> All Reports </LongName> |
| | | <ReportType> Book </ReportType> |
| | | <ShortName> All Reports </ShortName> |
| | | </Report> |
| | </MyReports> |
| <InputFiles> |
| | <File doctype="10-Q" isDefinitelyFs="true" isUsgaap="true" original="spgi-20240331.htm"> spgi-20240331.htm </File> |
| | <File> spgi-20240331.xsd </File> |
| | <File> spgi-20240331_cal.xml </File> |
| | <File> spgi-20240331_def.xml </File> |
| | <File> spgi-20240331_lab.xml </File> |
| | <File> spgi-20240331_pre.xml </File> |
| | </InputFiles> |
| <SupplementalFiles> |
| | <File> spgi-20240331_g1.jpg </File> |
| | <File> spgi-20240331_g2.jpg </File> |
| | <File> spgi-20240331_g3.jpg </File> |
| | </SupplementalFiles> |
| <BaseTaxonomies> |
| | <BaseTaxonomy items="917"> http://fasb.org/us-gaap/2023 </BaseTaxonomy> |
| | <BaseTaxonomy items="29"> http://xbrl.sec.gov/dei/2023 </BaseTaxonomy> |
| | <BaseTaxonomy items="4"> http://xbrl.sec.gov/ecd/2023 </BaseTaxonomy> |
| | </BaseTaxonomies> |
| <HasPresentationLinkbase> true </HasPresentationLinkbase> |
| <HasCalculationLinkbase> true </HasCalculationLinkbase> |
| </FilingSummary> |