v3.25.3
Restructuring Charges (Summary of Restructuring Plan) (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Restructuring Cost and Reserve [Line Items]        
Total restructuring charges $ 12 $ 22 $ 27 $ 103
Adenza restructuring        
Restructuring Cost and Reserve [Line Items]        
Total Program Costs Incurred 98 98
Divisional realignment*        
Restructuring Cost and Reserve [Line Items]        
Total Program Costs Incurred 139 139
Asset impairment charges | Adenza restructuring        
Restructuring Cost and Reserve [Line Items]        
Total restructuring charges 0 0 0 24
Asset impairment charges | Divisional realignment*        
Restructuring Cost and Reserve [Line Items]        
Total restructuring charges 0 5 0 9
Consulting services | Adenza restructuring        
Restructuring Cost and Reserve [Line Items]        
Total restructuring charges 3 1 5 4
Consulting services | Divisional realignment*        
Restructuring Cost and Reserve [Line Items]        
Total restructuring charges 0 6 0 27
Employee-related costs | Adenza restructuring        
Restructuring Cost and Reserve [Line Items]        
Total restructuring charges 7 3 18 15
Employee-related costs | Divisional realignment*        
Restructuring Cost and Reserve [Line Items]        
Total restructuring charges 0 2 0 8
Other        
Restructuring Cost and Reserve [Line Items]        
Total restructuring charges 12 22 27 103
Other | Adenza restructuring        
Restructuring Cost and Reserve [Line Items]        
Total restructuring charges 2 1 4 6
Other | Divisional realignment*        
Restructuring Cost and Reserve [Line Items]        
Total restructuring charges $ 0 $ 4 $ 0 $ 10