EBP, Employer Non-Elective Contribution, Percentage

No definition available.

Name:	spgi_EBPEmployerNonElectiveContributionPercentage
Namespace Prefix:	spgi_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

EBP, Participant After-Tax Contribution, Maximum Highly Compensated Guild Employee, Percentage

+ References

No definition available.

+ Details

Name:	spgi_EBPParticipantAfterTaxContributionMaximumHighlyCompensatedGuildEmployeePercentage
Namespace Prefix:	spgi_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

EBP, Participant After-Tax Contribution, Maximum Highly Compensated Non-Guild Employee, Percentage

+ References

No definition available.

+ Details

Name:	spgi_EBPParticipantAfterTaxContributionMaximumHighlyCompensatedNonGuildEmployeePercentage
Namespace Prefix:	spgi_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

EBP, Participant Contribution, Automatic Deferral Rate, Annual Increase

+ References

No definition available.

+ Details

Name:	spgi_EBPParticipantContributionAutomaticDeferralRateAnnualIncrease
Namespace Prefix:	spgi_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

EBP, Participant Distribution Minimum Age

+ References

No definition available.

+ Details

Name:	spgi_EBPParticipantDistributionMinimumAge
Namespace Prefix:	spgi_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	duration

- Definition

EBP, Participant Investment Allocation Increment, Percentage

+ References

No definition available.

+ Details

Name:	spgi_EBPParticipantInvestmentAllocationIncrementPercentage
Namespace Prefix:	spgi_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

EBP, Participant Loan, Basis Spread on Variable Rate

+ References

No definition available.

+ Details

Name:	spgi_EBPParticipantLoanBasisSpreadOnVariableRate
Namespace Prefix:	spgi_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

EBP, Participant Loan, Maximum Term

+ References

No definition available.

+ Details

Name:	spgi_EBPParticipantLoanMaximumTerm
Namespace Prefix:	spgi_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

EBP, Participant Loan, Minimum Term

+ References

No definition available.

+ Details

Name:	spgi_EBPParticipantLoanMinimumTerm
Namespace Prefix:	spgi_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

EBP, Participant Short-Term Incentive Compensation, Automatic Deferral Rate

+ References

No definition available.

+ Details

Name:	spgi_EBPParticipantShortTermIncentiveCompensationAutomaticDeferralRate
Namespace Prefix:	spgi_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

EBP, Profit Sharing Contribution, Maximum Guild Employee In Excess Of Social Security Wage Base, Percentage

+ References

No definition available.

+ Details

Name:	spgi_EBPProfitSharingContributionMaximumGuildEmployeeInExcessOfSocialSecurityWageBasePercentage
Namespace Prefix:	spgi_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

EBP, Profit Sharing Contribution, Maximum Guild Employee Up To Social Security Wage Base, Percentage

+ References

No definition available.

+ Details

Name:	spgi_EBPProfitSharingContributionMaximumGuildEmployeeUpToSocialSecurityWageBasePercentage
Namespace Prefix:	spgi_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

EBP, Profit Sharing Contribution, Maximum Non-Guild Employee, Percentage

+ References

No definition available.

+ Details

Name:	spgi_EBPProfitSharingContributionMaximumNonGuildEmployeePercentage
Namespace Prefix:	spgi_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 962
-SubTopic 205
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478416/962-205-50-1

+ Details

Name:	us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanLineItems
Namespace Prefix:	us-gaap-ebp_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of employer matching contribution on eligible participant contribution to employee stock purchase, saving, or similar plan (employee benefit plan (EBP)).

+ References

+ Details

Name:	us-gaap-ebp_EmployeeBenefitPlanEmployerContributionMatchingPercentage
Namespace Prefix:	us-gaap-ebp_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of participant compensation eligible for employer matching contribution for participant in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)).

+ References

+ Details

Name:	us-gaap-ebp_EmployeeBenefitPlanEmployerContributionParticipantCompensationMatchedPercentage
Namespace Prefix:	us-gaap-ebp_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of contribution receivable from employer of participant in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)).

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 962
-SubTopic 325
-Name Accounting Standards Codification
-Section 55
-Paragraph 17
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478873/962-325-55-17

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 962
-SubTopic 205
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6A-05(a)(Schedule II))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477804/962-205-S99-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 962
-SubTopic 310
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478642/962-310-45-1

+ Details

Name:	us-gaap-ebp_EmployeeBenefitPlanEmployerContributionReceivable
Namespace Prefix:	us-gaap-ebp_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of plan asset, in forfeited nonvested account, no longer allocated to participant in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)).

+ References

+ Details

Name:	us-gaap-ebp_EmployeeBenefitPlanForfeitedNonvestedAccount
Namespace Prefix:	us-gaap-ebp_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of decrease in forfeited nonvested account of employee stock purchase, saving, or similar plan (employee benefit plan (EBP)) from employer contribution.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 962
-SubTopic 325
-Name Accounting Standards Codification
-Section 55
-Paragraph 17
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478873/962-325-55-17

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 962
-SubTopic 205
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (j)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478416/962-205-50-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 962
-SubTopic 205
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6A-04(5)(c))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477804/962-205-S99-1

+ Details

Name:	us-gaap-ebp_EmployeeBenefitPlanForfeitedNonvestedAccountDecreaseForEmployerContribution
Namespace Prefix:	us-gaap-ebp_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Percentage of plan interest in master trust held by employee stock purchase, saving, or similar plan (employee benefit plan (EBP)), including, but not limited to, undivided interest in master trust.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 962
-SubTopic 325
-Name Accounting Standards Codification
-Section 50
-Paragraph 8
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477783/962-325-50-8

+ Details

Name:	us-gaap-ebp_EmployeeBenefitPlanInterestInMasterTrustPercentage
Namespace Prefix:	us-gaap-ebp_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of maximum account balance that participant in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)) can borrow.

+ References

+ Details

Name:	us-gaap-ebp_EmployeeBenefitPlanNoteReceivableFromParticipantAccountMaximumBorrowingAmount
Namespace Prefix:	us-gaap-ebp_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Percentage of maximum account balance that participant in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)) can borrow to total participant account balance.

+ References

+ Details

Name:	us-gaap-ebp_EmployeeBenefitPlanNoteReceivableFromParticipantAccountMaximumBorrowingToTotalAccountPercentage
Namespace Prefix:	us-gaap-ebp_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of minimum account balance that participant in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)) can borrow.

+ References

+ Details

Name:	us-gaap-ebp_EmployeeBenefitPlanNoteReceivableFromParticipantAccountMinimumBorrowingAmount
Namespace Prefix:	us-gaap-ebp_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Percentage of eligible compensation contributed for participant automatically enrolled in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)).

+ References

+ Details

Name:	us-gaap-ebp_EmployeeBenefitPlanParticipantContributionAutomaticDeferralRate
Namespace Prefix:	us-gaap-ebp_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of maximum pretax annual compensation that participant in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)), is permitted to contribute to total pretax annual compensation.

+ References

+ Details

Name:	us-gaap-ebp_EmployeeBenefitPlanParticipantContributionPretaxMaximumAnnualCompensationToTotalCompensationPercentage
Namespace Prefix:	us-gaap-ebp_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	dei_LegalEntityAxis=spgi_EBP002Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Plan Description - Narrative (Details) - EBP 002	12 Months Ended
Plan Description - Narrative (Details) - EBP 002	Dec. 31, 2025 USD ($) yr	Jun. 25, 2026 USD ($)	Dec. 31, 2024 USD ($)
EBP, Description of Plan [Line Items]
Interest in master trust, percentage	100.00%
Participant contribution, automatic, deferral rate	4.00%
Participant contribution, automatic deferral rate, annual increase	1.00%
Participant contribution, pretax, maximum annual compensation to total compensation, percentage	60.00%
Participant after-tax contribution, maximum highly compensated non-guild employee, percentage	3.00%
Participant after-tax contribution, maximum highly compensated guild employee, percentage	4.00%
Participant short-term incentive compensation, automatic deferral rate	0.00%
Employer contribution, matching, percentage	100.00%
Employer contribution, participant compensation matched, percentage	4.00%
Employer non-elective contribution, percentage	2.00%
Participant investment allocation increment, percentage	1.00%
Profit sharing contribution, maximum non-guild employee, percentage	2.50%
Profit sharing contribution, maximum guild employee up to social security wage base, percentage	2.50%
Profit sharing contribution, maximum guild employee in excess of social security wage base, percentage	5.00%
Employer contributions receivable	$ 30,297,000		$ 35,404,000
Forfeited nonvested account	520,000		$ 787,000
Forfeited nonvested account, decrease for employer contribution	$ 727,000
Participant distribution minimum age \| yr	59.5
Note receivable from participant account, minimum borrowing amount	$ 1,000
Note receivable from participant account, maximum borrowing amount	$ 50,000
Note receivable from participant account, maximum borrowing to total account percentage	50.00%
Participant loan, maximum term	10 years
Participant loan, basis spread on variable rate	2.00%
Subsequent Event
EBP, Description of Plan [Line Items]
Employer contributions receivable		$ 18,869,000
Minimum
EBP, Description of Plan [Line Items]
Participant loan, minimum term	1 year
Maximum
EBP, Description of Plan [Line Items]
Participant contribution, automatic, deferral rate	10.00%
Participant loan, minimum term	5 years