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Restructuring - Schedule of Initial Restructuring Charge Recorded and the Ending Reserve Balance (Details) - USD ($)
$ in Millions
 6 Months Ended
Jun. 30, 2023
Dec. 31, 2022
2023 Restructuring Plan    
Restructuring Cost and Reserve [Line Items]    
Initial Charge Recorded $ 62  
Ending Reserve Balance 56  
2023 Restructuring Plan | Operating Segments | Market Intelligence    
Restructuring Cost and Reserve [Line Items]    
Initial Charge Recorded 21  
Ending Reserve Balance 19  
2023 Restructuring Plan | Operating Segments | Ratings    
Restructuring Cost and Reserve [Line Items]    
Initial Charge Recorded 5  
Ending Reserve Balance 4  
2023 Restructuring Plan | Operating Segments | Commodity Insights    
Restructuring Cost and Reserve [Line Items]    
Initial Charge Recorded 15  
Ending Reserve Balance 15  
2023 Restructuring Plan | Operating Segments | Mobility    
Restructuring Cost and Reserve [Line Items]    
Initial Charge Recorded 4  
Ending Reserve Balance 3  
2023 Restructuring Plan | Operating Segments | Indices    
Restructuring Cost and Reserve [Line Items]    
Initial Charge Recorded 3  
Ending Reserve Balance 3  
2023 Restructuring Plan | Operating Segments | Engineering Solutions    
Restructuring Cost and Reserve [Line Items]    
Initial Charge Recorded 0  
Ending Reserve Balance 0  
2023 Restructuring Plan | Corporate    
Restructuring Cost and Reserve [Line Items]    
Initial Charge Recorded 14  
Ending Reserve Balance 12  
2022 Restructuring Plan    
Restructuring Cost and Reserve [Line Items]    
Initial Charge Recorded 283  
Ending Reserve Balance 73 $ 164
2022 Restructuring Plan | Operating Segments | Market Intelligence    
Restructuring Cost and Reserve [Line Items]    
Initial Charge Recorded 86  
Ending Reserve Balance 26  
2022 Restructuring Plan | Operating Segments | Ratings    
Restructuring Cost and Reserve [Line Items]    
Initial Charge Recorded 26  
Ending Reserve Balance 7  
2022 Restructuring Plan | Operating Segments | Commodity Insights    
Restructuring Cost and Reserve [Line Items]    
Initial Charge Recorded 45  
Ending Reserve Balance 11  
2022 Restructuring Plan | Operating Segments | Mobility    
Restructuring Cost and Reserve [Line Items]    
Initial Charge Recorded 2  
Ending Reserve Balance 1  
2022 Restructuring Plan | Operating Segments | Indices    
Restructuring Cost and Reserve [Line Items]    
Initial Charge Recorded 13  
Ending Reserve Balance 5  
2022 Restructuring Plan | Operating Segments | Engineering Solutions    
Restructuring Cost and Reserve [Line Items]    
Initial Charge Recorded 2  
Ending Reserve Balance 1  
2022 Restructuring Plan | Corporate    
Restructuring Cost and Reserve [Line Items]    
Initial Charge Recorded 109  
Ending Reserve Balance $ 22