v3.26.1
Segment and Related Information - Schedule of Disaggregation of Revenue (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Disaggregation of Revenue [Line Items]    
Revenue $ 4,171 $ 3,777
Services transferred at a point in time    
Disaggregation of Revenue [Line Items]    
Revenue 978 850
Services transferred over time    
Disaggregation of Revenue [Line Items]    
Revenue 3,193 2,927
Subscription    
Disaggregation of Revenue [Line Items]    
Revenue 2,014 1,898
Non-subscription / Transaction    
Disaggregation of Revenue [Line Items]    
Revenue 978 850
Non-transaction    
Disaggregation of Revenue [Line Items]    
Revenue 538 481
Asset-linked fees    
Disaggregation of Revenue [Line Items]    
Revenue 339 288
Sales usage-based royalties    
Disaggregation of Revenue [Line Items]    
Revenue 133 110
Recurring variable revenue    
Disaggregation of Revenue [Line Items]    
Revenue 169 150
Reportable Legal Entities    
Disaggregation of Revenue [Line Items]    
Revenue 4,223 3,825
Reportable Legal Entities | Market Intelligence    
Disaggregation of Revenue [Line Items]    
Revenue 1,296 1,199
Reportable Legal Entities | Market Intelligence | Services transferred at a point in time    
Disaggregation of Revenue [Line Items]    
Revenue 75 56
Reportable Legal Entities | Market Intelligence | Services transferred over time    
Disaggregation of Revenue [Line Items]    
Revenue 1,221 1,143
Reportable Legal Entities | Market Intelligence | Subscription    
Disaggregation of Revenue [Line Items]    
Revenue 1,052 993
Reportable Legal Entities | Market Intelligence | Non-subscription / Transaction    
Disaggregation of Revenue [Line Items]    
Revenue 75 56
Reportable Legal Entities | Market Intelligence | Non-transaction    
Disaggregation of Revenue [Line Items]    
Revenue 0 0
Reportable Legal Entities | Market Intelligence | Asset-linked fees    
Disaggregation of Revenue [Line Items]    
Revenue 0 0
Reportable Legal Entities | Market Intelligence | Sales usage-based royalties    
Disaggregation of Revenue [Line Items]    
Revenue 0 0
Reportable Legal Entities | Market Intelligence | Recurring variable revenue    
Disaggregation of Revenue [Line Items]    
Revenue 169 150
Reportable Legal Entities | Ratings    
Disaggregation of Revenue [Line Items]    
Revenue 1,302 1,149
Reportable Legal Entities | Ratings | Services transferred at a point in time    
Disaggregation of Revenue [Line Items]    
Revenue 712 620
Reportable Legal Entities | Ratings | Services transferred over time    
Disaggregation of Revenue [Line Items]    
Revenue 590 529
Reportable Legal Entities | Ratings | Subscription    
Disaggregation of Revenue [Line Items]    
Revenue 0 0
Reportable Legal Entities | Ratings | Non-subscription / Transaction    
Disaggregation of Revenue [Line Items]    
Revenue 712 620
Reportable Legal Entities | Ratings | Non-transaction    
Disaggregation of Revenue [Line Items]    
Revenue 590 529
Reportable Legal Entities | Ratings | Asset-linked fees    
Disaggregation of Revenue [Line Items]    
Revenue 0 0
Reportable Legal Entities | Ratings | Sales usage-based royalties    
Disaggregation of Revenue [Line Items]    
Revenue 0 0
Reportable Legal Entities | Ratings | Recurring variable revenue    
Disaggregation of Revenue [Line Items]    
Revenue 0 0
Reportable Legal Entities | Energy    
Disaggregation of Revenue [Line Items]    
Revenue 652 612
Reportable Legal Entities | Energy | Services transferred at a point in time    
Disaggregation of Revenue [Line Items]    
Revenue 109 97
Reportable Legal Entities | Energy | Services transferred over time    
Disaggregation of Revenue [Line Items]    
Revenue 543 515
Reportable Legal Entities | Energy | Subscription    
Disaggregation of Revenue [Line Items]    
Revenue 506 486
Reportable Legal Entities | Energy | Non-subscription / Transaction    
Disaggregation of Revenue [Line Items]    
Revenue 109 97
Reportable Legal Entities | Energy | Non-transaction    
Disaggregation of Revenue [Line Items]    
Revenue 0 0
Reportable Legal Entities | Energy | Asset-linked fees    
Disaggregation of Revenue [Line Items]    
Revenue 0 0
Reportable Legal Entities | Energy | Sales usage-based royalties    
Disaggregation of Revenue [Line Items]    
Revenue 37 29
Reportable Legal Entities | Energy | Recurring variable revenue    
Disaggregation of Revenue [Line Items]    
Revenue 0 0
Reportable Legal Entities | Mobility    
Disaggregation of Revenue [Line Items]    
Revenue 454 420
Reportable Legal Entities | Mobility | Services transferred at a point in time    
Disaggregation of Revenue [Line Items]    
Revenue 82 77
Reportable Legal Entities | Mobility | Services transferred over time    
Disaggregation of Revenue [Line Items]    
Revenue 372 343
Reportable Legal Entities | Mobility | Subscription    
Disaggregation of Revenue [Line Items]    
Revenue 372 343
Reportable Legal Entities | Mobility | Non-subscription / Transaction    
Disaggregation of Revenue [Line Items]    
Revenue 82 77
Reportable Legal Entities | Mobility | Non-transaction    
Disaggregation of Revenue [Line Items]    
Revenue 0 0
Reportable Legal Entities | Mobility | Asset-linked fees    
Disaggregation of Revenue [Line Items]    
Revenue 0 0
Reportable Legal Entities | Mobility | Sales usage-based royalties    
Disaggregation of Revenue [Line Items]    
Revenue 0 0
Reportable Legal Entities | Mobility | Recurring variable revenue    
Disaggregation of Revenue [Line Items]    
Revenue 0 0
Reportable Legal Entities | Indices    
Disaggregation of Revenue [Line Items]    
Revenue 519 445
Reportable Legal Entities | Indices | Services transferred at a point in time    
Disaggregation of Revenue [Line Items]    
Revenue 0 0
Reportable Legal Entities | Indices | Services transferred over time    
Disaggregation of Revenue [Line Items]    
Revenue 519 445
Reportable Legal Entities | Indices | Subscription    
Disaggregation of Revenue [Line Items]    
Revenue 84 76
Reportable Legal Entities | Indices | Non-subscription / Transaction    
Disaggregation of Revenue [Line Items]    
Revenue 0 0
Reportable Legal Entities | Indices | Non-transaction    
Disaggregation of Revenue [Line Items]    
Revenue 0 0
Reportable Legal Entities | Indices | Asset-linked fees    
Disaggregation of Revenue [Line Items]    
Revenue 339 288
Reportable Legal Entities | Indices | Sales usage-based royalties    
Disaggregation of Revenue [Line Items]    
Revenue 96 81
Reportable Legal Entities | Indices | Recurring variable revenue    
Disaggregation of Revenue [Line Items]    
Revenue 0 0
Intersegment Elimination    
Disaggregation of Revenue [Line Items]    
Revenue (52) (48)
Intersegment Elimination | Services transferred at a point in time    
Disaggregation of Revenue [Line Items]    
Revenue 0 0
Intersegment Elimination | Services transferred over time    
Disaggregation of Revenue [Line Items]    
Revenue (52) (48)
Intersegment Elimination | Subscription    
Disaggregation of Revenue [Line Items]    
Revenue 0 0
Intersegment Elimination | Non-subscription / Transaction    
Disaggregation of Revenue [Line Items]    
Revenue 0 0
Intersegment Elimination | Non-transaction    
Disaggregation of Revenue [Line Items]    
Revenue (52) (48)
Intersegment Elimination | Asset-linked fees    
Disaggregation of Revenue [Line Items]    
Revenue 0 0
Intersegment Elimination | Sales usage-based royalties    
Disaggregation of Revenue [Line Items]    
Revenue 0 0
Intersegment Elimination | Recurring variable revenue    
Disaggregation of Revenue [Line Items]    
Revenue 0 0
Intersegment Elimination | Market Intelligence    
Disaggregation of Revenue [Line Items]    
Revenue (4) (3)
Intersegment Elimination | Ratings    
Disaggregation of Revenue [Line Items]    
Revenue (45) (42)
Intersegment Elimination | Energy    
Disaggregation of Revenue [Line Items]    
Revenue 0 0
Intersegment Elimination | Mobility    
Disaggregation of Revenue [Line Items]    
Revenue 0 0
Intersegment Elimination | Indices    
Disaggregation of Revenue [Line Items]    
Revenue $ (3) $ (3)