INTRODUCTION AND BASIS OF PRESENTATION (Policies)	3 Months Ended
Mar. 31, 2025
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation and Use of Estimates The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they should be read in conjunction with the audited consolidated financial statements and notes included in our Annual Report on Form 10-K for the fiscal year ended December 31, 2024. If not materially different, certain note disclosures included therein have been omitted from these interim condensed consolidated financial statements. In the opinion of management, all adjustments, which consist of normal recurring adjustments necessary for a fair statement of the interim consolidated financial statements, have been included. The results of operations for interim periods are not necessarily indicative of results for the entire year. The Company’s unaudited condensed consolidated financial statements are prepared in accordance with GAAP.
Use of Estimates	The Company makes certain estimates and judgments that can affect the reported amounts of assets and liabilities as of the date of the unaudited condensed 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 assessment of impairment of goodwill and intangible assets and income taxes. The Company believes that estimates used in the preparation of these unaudited condensed consolidated financial statements are reasonable; however, actual results could differ materially from these estimates. Inter-company balances and transactions are eliminated in consolidation. In the first quarter of 2025, we renamed our “ESG and Climate” operating and reportable segment to “Sustainability and Climate” to reflect the breadth of our product offerings. There were no changes to the composition of our operating or reportable segments, the financial information reviewed by our chief operating decision maker (“CODM”), or our historical segment operating results.
Concentrations	Concentrations For the three months ended March 31, 2025 and 2024, BlackRock, Inc. (“BlackRock”) accounted for 10.3% and 10.0% of the Company’s consolidated operating revenues, respectively. For the three months ended March 31, 2025 and 2024, BlackRock accounted for 17.8% and 17.9% of the Index segment’s operating revenues, respectively. No single customer represented 10.0% or more of operating revenues within Analytics, Sustainability and Climate or All Other – Private Assets for the three months ended March 31, 2025 and 2024.
Recent Accounting Pronouncements	In November 2023, the FASB issued Accounting Standards Update No. 2023-07 “Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures,” or ASU 2023-07. The amendments in ASU 2023-07 aim to improve reportable segment disclosure requirements, primarily through enhanced disclosures about significant segment expenses. ASU 2023-07 was adopted by the Company and is effective for the Company’s Annual Report on Form 10-K for the year ended December 31, 2024, and subsequent interim periods. The adoption of ASU 2023-07 expanded certain disclosures but did not have a material impact on our consolidated financial statements. In December 2023, the FASB issued Accounting Standards Update No. 2023-09 “Income Taxes (Topic 740): Improvements to Income Tax Disclosures,” or ASU 2023-09. The amendments in ASU 2023-09 aim to enhance the transparency and decision usefulness of income tax disclosures. ASU 2023-09 is effective for the Company’s Annual Report on Form 10-K for the year ended December 31, 2025. The adoption of ASU 2023-09 will expand our disclosures, but we do not expect the adoption of ASU 2023-09 to have a material impact on our consolidated financial statements. In November 2024, the FASB issued Accounting Standards Update No. 2024-03 “Income Statement—Reporting Comprehensive Income—Expense Disaggregation Disclosures (Subtopic 220-40)” or ASU 2024-03. The amendments in ASU 2024-03 require additional disclosure of the nature of expenses included in the income statement as well as disclosures about specific types of expenses included in the expense captions presented in the income statement. ASU 2024-03 is effective for the Company’s Annual Report on Form 10-K for the year ended December 31, 2027 and interim period reporting beginning in 2028 on a prospective basis. The Company is currently evaluating the impact that the adoption of this standard will have on its consolidated financial statements.

INTRODUCTION AND BASIS OF PRESENTATION (Policies)

3 Months Ended

Mar. 31, 2025

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Basis of Presentation and Use of Estimates

The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they should be read in conjunction with the audited consolidated financial statements and notes included in our Annual Report on Form 10-K for the fiscal year ended December 31, 2024. If not materially different, certain note disclosures included therein have been omitted from these interim condensed consolidated financial statements.

In the opinion of management, all adjustments, which consist of normal recurring adjustments necessary for a fair statement of the interim consolidated financial statements, have been included. The results of operations for interim periods are not necessarily indicative of results for the entire year.

The Company’s unaudited condensed consolidated financial statements are prepared in accordance with GAAP.

Use of Estimates

The Company makes certain estimates and judgments that can affect the reported amounts of assets and liabilities as of the date of the unaudited condensed 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 assessment of impairment of goodwill and intangible assets and income taxes. The Company believes that estimates used in the preparation of these unaudited condensed consolidated financial statements are reasonable; however, actual results could differ materially from these estimates. Inter-company balances and transactions are eliminated in consolidation.

In the first quarter of 2025, we renamed our “ESG and Climate” operating and reportable segment to “Sustainability and Climate” to reflect the breadth of our product offerings. There were no changes to the composition of our operating or reportable segments, the financial information reviewed by our chief operating decision maker (“CODM”), or our historical segment operating results.

Concentrations

For the three months ended March 31, 2025 and 2024, BlackRock, Inc. (“BlackRock”) accounted for 10.3% and 10.0% of the Company’s consolidated operating revenues, respectively. For the three months ended March 31, 2025 and 2024, BlackRock accounted for 17.8% and 17.9% of the Index segment’s operating revenues, respectively. No single customer represented 10.0% or more of operating revenues within Analytics, Sustainability and Climate or All Other – Private Assets for the three months ended March 31, 2025 and 2024.

Recent Accounting Pronouncements

In November 2023, the FASB issued Accounting Standards Update No. 2023-07 “Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures,” or ASU 2023-07. The amendments in ASU 2023-07 aim to improve reportable segment disclosure requirements, primarily through enhanced disclosures about significant segment expenses. ASU 2023-07 was adopted by the Company and is effective for the Company’s Annual Report on Form 10-K for the year ended December 31, 2024, and subsequent interim periods. The adoption of ASU 2023-07 expanded certain disclosures but did not have a material impact on our consolidated financial statements.

In December 2023, the FASB issued Accounting Standards Update No. 2023-09 “Income Taxes (Topic 740): Improvements to Income Tax Disclosures,” or ASU 2023-09. The amendments in ASU 2023-09 aim to enhance the transparency and decision usefulness of income tax disclosures. ASU 2023-09 is effective for the Company’s Annual Report on Form 10-K for the year ended December 31, 2025. The adoption of ASU 2023-09 will expand our disclosures, but we do not expect the adoption of ASU 2023-09 to have a material impact on our consolidated financial statements.

In November 2024, the FASB issued Accounting Standards Update No. 2024-03 “Income Statement—Reporting Comprehensive Income—Expense Disaggregation Disclosures (Subtopic 220-40)” or ASU 2024-03. The amendments in ASU 2024-03 require additional disclosure of the nature of expenses included in the income statement as well as disclosures about specific types of expenses included in the expense captions presented in the income statement. ASU 2024-03 is effective for the Company’s Annual Report on Form 10-K for the year ended December 31, 2027 and interim period reporting beginning in 2028 on a prospective basis. The Company is currently evaluating the impact that the adoption of this standard will have on its consolidated financial statements.