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v3.25.1

Revenues - Revenue by Category (Detail) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2025 | Mar. 31, 2024
Disaggregation of Revenue [Line Items] |  |
Revenue | $ 1,924 | $ 1,786
Eliminations |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | (52) | (50)
Eliminations |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | (52) | (50)
MA |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 859 | 799
MA | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 862 | 802
MA | Eliminations |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 3 | 3
MA | Decision Solutions (DS) |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 405 | 365
MA | Decision Solutions (DS) | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 405 | 365
MA | Decision Solutions (DS) | DS Banking Product and Service | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 141 | 134
MA | Decision Solutions (DS) | Insurance | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 163 | 144
MA | Decision Solutions (DS) | KYC | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 101 | 87
MA | Research and Insights (R&I) |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 236 | 222
MA | Research and Insights (R&I) | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 236 | 222
MA | Data and Information (D&I) |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 218 | 212
MA | Data and Information (D&I) | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 218 | 212
MIS |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 1,065 | 987
MIS | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 1,114 | 1,034
MIS | Eliminations |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 49 | 47
MIS | Corporate Finance (CFG) |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 564 | 529
MIS | Corporate Finance (CFG) | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 564 | 529
MIS | Corporate Finance (CFG) | Investment-grade | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 165 | 147
MIS | Corporate Finance (CFG) | High-yield | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 67 | 67
MIS | Corporate Finance (CFG) | Bank loans | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 160 | 155
MIS | Corporate Finance (CFG) | Other accounts | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 172 | 160
MIS | Structured Finance (SFG) |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 138 | 114
MIS | Structured Finance (SFG) | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 138 | 114
MIS | Structured Finance (SFG) | Other accounts | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 1 | 1
MIS | Structured Finance (SFG) | Asset-backed securities | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 35 | 33
MIS | Structured Finance (SFG) | RMBS | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 26 | 24
MIS | Structured Finance (SFG) | CMBS | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 28 | 17
MIS | Structured Finance (SFG) | Structured credit | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 48 | 39
MIS | Financial Institutions (FIG) |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 191 | 195
MIS | Financial Institutions (FIG) | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 191 | 195
MIS | Financial Institutions (FIG) | Insurance | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 45 | 59
MIS | Financial Institutions (FIG) | Other accounts | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 3 | 3
MIS | Financial Institutions (FIG) | Banking | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 130 | 121
MIS | Financial Institutions (FIG) | Managed investments | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 13 | 12
MIS | Public, Project and Infrastructure Finance (PPIF) |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 163 | 141
MIS | Public, Project and Infrastructure Finance (PPIF) | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 163 | 141
MIS | Public, Project and Infrastructure Finance (PPIF) | Public finance / sovereign | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 72 | 59
MIS | Public, Project and Infrastructure Finance (PPIF) | Project and infrastructure | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 91 | 82
MIS | Total ratings revenue |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 1,056 | 979
MIS | Total ratings revenue | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 1,056 | 979
MIS | MIS Other |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 9 | 8
MIS | MIS Other | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | $ 9 | $ 8

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