Restructuring - Schedule of Initial Restructuring Charge Recorded and the Ending Reserve Balance (Details) - 2024 Restructuring Plan $ in Millions	12 Months Ended
	Dec. 31, 2024 USD ($)
Restructuring Cost and Reserve [Line Items]
Initial Charge Recorded	$ 125
Ending Reserve Balance	88
Operating segments | Market Intelligence
Restructuring Cost and Reserve [Line Items]
Initial Charge Recorded	77
Ending Reserve Balance	48
Operating segments | Ratings
Restructuring Cost and Reserve [Line Items]
Initial Charge Recorded	4
Ending Reserve Balance	3
Operating segments | Commodity Insights
Restructuring Cost and Reserve [Line Items]
Initial Charge Recorded	13
Ending Reserve Balance	11
Operating segments | Mobility
Restructuring Cost and Reserve [Line Items]
Initial Charge Recorded	6
Ending Reserve Balance	3
Operating segments | Indices
Restructuring Cost and Reserve [Line Items]
Initial Charge Recorded	1
Ending Reserve Balance	0
Operating segments | Engineering Solutions
Restructuring Cost and Reserve [Line Items]
Initial Charge Recorded	0
Ending Reserve Balance	0
Corporate
Restructuring Cost and Reserve [Line Items]
Initial Charge Recorded	24
Ending Reserve Balance	23
Initial Charge Recorded	183
Ending Reserve Balance	20
Operating segments | Market Intelligence
Restructuring Cost and Reserve [Line Items]
Initial Charge Recorded	90
Ending Reserve Balance	13
Operating segments | Ratings
Restructuring Cost and Reserve [Line Items]
Initial Charge Recorded	10
Ending Reserve Balance	0
Operating segments | Commodity Insights
Restructuring Cost and Reserve [Line Items]
Initial Charge Recorded	26
Ending Reserve Balance	2
Operating segments | Mobility
Restructuring Cost and Reserve [Line Items]
Initial Charge Recorded	9
Ending Reserve Balance	1
Operating segments | Indices
Restructuring Cost and Reserve [Line Items]
Initial Charge Recorded	5
Ending Reserve Balance	0
Operating segments | Engineering Solutions
Restructuring Cost and Reserve [Line Items]
Initial Charge Recorded	0
Ending Reserve Balance	0
Corporate
Restructuring Cost and Reserve [Line Items]
Initial Charge Recorded	43
Ending Reserve Balance	$ 4