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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, 2022
Dec. 31, 2021
2022 Restructuring Plan    
Restructuring Cost and Reserve [Line Items]    
Initial Charge Recorded $ 127  
Ending Reserve Balance 92  
2022 Restructuring Plan | Operating Segments | Market Intelligence    
Restructuring Cost and Reserve [Line Items]    
Initial Charge Recorded 27  
Ending Reserve Balance 19  
2022 Restructuring Plan | Operating Segments | Ratings    
Restructuring Cost and Reserve [Line Items]    
Initial Charge Recorded 13  
Ending Reserve Balance 10  
2022 Restructuring Plan | Operating Segments | Commodity Insights    
Restructuring Cost and Reserve [Line Items]    
Initial Charge Recorded 22  
Ending Reserve Balance 15  
2022 Restructuring Plan | Operating Segments | Mobility    
Restructuring Cost and Reserve [Line Items]    
Initial Charge Recorded 2  
Ending Reserve Balance 2  
2022 Restructuring Plan | Operating Segments | Indices    
Restructuring Cost and Reserve [Line Items]    
Initial Charge Recorded 4  
Ending Reserve Balance 3  
2022 Restructuring Plan | Operating Segments | Engineering Solutions    
Restructuring Cost and Reserve [Line Items]    
Initial Charge Recorded 1  
Ending Reserve Balance 1  
2022 Restructuring Plan | Corporate    
Restructuring Cost and Reserve [Line Items]    
Initial Charge Recorded 58  
Ending Reserve Balance 42  
2021 Restructuring Plan    
Restructuring Cost and Reserve [Line Items]    
Initial Charge Recorded 19  
Ending Reserve Balance 17 $ 19
2021 Restructuring Plan | Operating Segments | Market Intelligence    
Restructuring Cost and Reserve [Line Items]    
Initial Charge Recorded 3  
Ending Reserve Balance 3  
2021 Restructuring Plan | Operating Segments | Ratings    
Restructuring Cost and Reserve [Line Items]    
Initial Charge Recorded 3  
Ending Reserve Balance 3  
2021 Restructuring Plan | Operating Segments | Commodity Insights    
Restructuring Cost and Reserve [Line Items]    
Initial Charge Recorded 0  
Ending Reserve Balance 0  
2021 Restructuring Plan | Operating Segments | Mobility    
Restructuring Cost and Reserve [Line Items]    
Initial Charge Recorded 0  
Ending Reserve Balance 0  
2021 Restructuring Plan | Operating Segments | Indices    
Restructuring Cost and Reserve [Line Items]    
Initial Charge Recorded 0  
Ending Reserve Balance 0  
2021 Restructuring Plan | Operating Segments | Engineering Solutions    
Restructuring Cost and Reserve [Line Items]    
Initial Charge Recorded 0  
Ending Reserve Balance 0  
2021 Restructuring Plan | Corporate    
Restructuring Cost and Reserve [Line Items]    
Initial Charge Recorded 13  
Ending Reserve Balance $ 11